CN104524700B - High building life saving - Google Patents

Abstract

The invention relates to a high-rise building lifeline, which comprises a cantilever composed of an outer sleeve and an inner sleeve. The inner sleeve is provided with a first speed governor and at least one second speed governor, and the rear of the last second speed governor is arranged There is a tail car, the first speed limiter, the follow-up speed limiter, and the tail car are connected in series through the same wire rope. The high-rise building lifeline of the present invention has a reasonable structure and is currently the only escape device in China that adopts multiple speed limiters to be installed in series on the same steel wire rope and can escape continuously; it occupies a small area and uses a bare steel wire rope of 3 mm , when stored for backup, under the same height limit, the volume occupied by the rigging of this device is only 1/27 of that of the current commercially available descending device; it is easy to use and easy to control, requires less for the user, and can be controlled by the escapees independently Brake on the way to rescue those in distress on the floor below; it has good safety, and its evacuation speed is the highest among similar products; it is maintenance-free and has a long service life.

Description

High-rise building lifeline

technical field

The invention relates to a fire-fighting escape device, in particular to a high-rise building lifeline.

Background technique

With the development of the times, there are more and more high-rise buildings (abbreviated as high-rise buildings), and the safe escape of high-rise buildings has become an urgent problem to be solved.

People who live and work in high-rise buildings will cause casualties if they cannot escape in time when encountering events such as fire, explosion, earthquake, and hijacking. The U.S. 911 incident and the casualty figures of domestic previous major high-rise building fires show that in fact there is still no simple and convenient high-rise building safety escape device (rescue or self-rescue) generally accepted at present.

In order to solve the safe escape problem of high-rise buildings, various methods have been adopted in practice at home and abroad, such as aerial ladders, helicopters, air cushions and some informal temporary measures. However, considering the principles of low cost, safety, simplicity and convenience, self-rescue and mutual rescue, and universal application, the preferred solution is still a rigging device, such as a lifeline.

Existing lifelines for high-rise buildings usually require training before they can be skillfully used. In use, in order to achieve deceleration and safe landing during the descent, users (professionals) need to control the friction with their hands, or use some simple The instrument cooperates with the manual operation to control the friction force. However, this requires the users of the lifeline to have good psychological and physical qualities, and well-trained skills to ensure safety and reliability. In the tense and chaotic atmosphere of disasters or accidents, untrained ordinary It is not only dangerous but also often impossible for people, old people, children, injured or fainting people to rely on existing high-rise building lifelines to save themselves or each other, especially in the case of higher floors, even if lifelines are equipped Difficult to be used correctly and safely.

Contents of the invention

Aiming at the defects existing in the prior art, the object of the present invention is to provide a lifeline for high-rise buildings, which has a reasonable structure, is convenient to use, has good safety, is simple to use and is easy to control, has less requirements on users, is maintenance-free, and has a long service life.

For achieving above object, the technical scheme that the present invention takes is:

The high-rise building lifeline includes a cantilever, and the cantilever includes: an outer sleeve 1 and an inner sleeve 2, and is characterized in that:

The outer sleeve 1 is directly fixed on the floor of the window or the balcony and is positioned under the ceiling, with its front end opening facing outside the window,

The inner sleeve 2 is arranged in the outer sleeve 1, and its front end opening is close to and facing out of the window,

A roller 6 is arranged between the outer sleeve 1 and the inner sleeve 2, so that the inner sleeve can slide in the outer sleeve,

A first speed limiter 3 and at least one follow-up speed limiter 4 are arranged in the inner sleeve 2, and a rear car 7 is arranged behind the last follow-up speed limiter 4,

The first speed limiter 3, the follow-up speed limiter 4, and the tail car 7 are sequentially connected in series through the same wire rope 5,

The height of the tail car 7 is higher than the height of the first speed limiter 3 and the follow-up speed limiter 4, and the front end opening of the inner sleeve 2 is provided with a crossbeam 8 adapted to the height of the tail car 7, and the crossbeam 8 is used to block the tail car 7 Make it impossible to break away from the cantilever.

On the basis of the above technical solution, an extension control mechanism is provided between the outer sleeve 1 and the inner sleeve 2, and the extension control mechanism includes: a traction rope 11, a movable pulley 12, a lock plate 13, a breakable rope 14,

The movable pulley 12 is located at the bottom of the rear end face of the inner sleeve,

One end of the traction rope 11 is fixed on the bottom surface of the front end of the outer sleeve 1, and the other end goes around the movable pulley 12 and penetrates into the inner sleeve.

The strength of the breakable rope 14 is sufficient to pull the inner sleeve 2 out of the outer sleeve 1, but the strength of the breakable rope is less than a person's weight,

Locking plate 13 is arranged on the top surface of outer sleeve 1, and locking plate 13 is L-shaped as a whole, and outer sleeve 1 is provided with locking plate hole, and one end of locking plate 13 is pivoted with the top surface of outer sleeve 1, and another When one end passes through the hole of the lock plate, the inner sleeve 2 can be limitedly locked in the use state.

On the basis of the above technical solution, when the inner sleeve 2 is fully pulled out to the maximum position, the distance between its front end and the wall is 0.5-1 m.

On the basis of the above technical solution, a bolt machine 309 is provided at the front end of the first speed governor 3, and the suspension mechanism 15 is assembled on the bolt machine 309, and the bolt machine 309 is used to cooperate with the beam 8 when not in use. The limit of the first speed limiter 3;

A trigger mechanism 409 is provided at the rear end face of the secondary speed limiter 4, and the suspension mechanism 15 is assembled on the trigger mechanism 409. The trigger mechanism 409 is used to cooperate with the crossbeam 8 when the secondary speed limiter 4 is in a standby state Realize the limit to the speed limiter 4 of the follow-up.

On the basis of the above technical solution, a strip-shaped opening groove is provided on the bottom surface of the front part of the inner sleeve 2, and the opening of the strip-shaped opening groove communicates with the front end of the inner sleeve 2.

The suspension mechanism 15 on the starting overspeed governor 3 hangs down from the bar-shaped opening groove,

Suspension mechanism 15 on the secondary speed limiter 4 is placed flat in the inner sleeve 2, and when the secondary speed limiter 4 moves to the bar-shaped opening slot, the suspension mechanism on the secondary speed limiter 4 also moves from The bar-shaped opening slot hangs down.

On the basis of above-mentioned technical scheme, suspension mechanism 15 comprises:

The lower end is provided with a suspension mechanism buffer 2201 with a suspension mechanism hook 2202 .

On the basis of the above technical solutions, the first speed limiter 3 includes:

The outer shell 3010 of the speed governor has a rope reel shaft 302 and a high-speed shaft 303 in the center of its inner cavity, and the rope reel shaft 302 and the high-speed shaft 303 are coaxially arranged.

One side of the high-speed shaft 303 is provided with a medium-speed shaft 308 parallel to it, and the medium-speed shaft 308 is arranged between two frame plates, and the two frame plates are fixedly connected with the outer shell 3010 of the speed limiter.

An acceleration gear train 304 is provided on the intermediate speed shaft 308,

The acceleration gear train 304 includes: a pinion for meshing with the bull gear on the rope reel shaft, a bull gear for meshing with the pinion on the high-speed shaft,

A frictional energy consumer 305 is provided on the side of the high-speed shaft 303 away from the rope reel shaft 302,

On the outer side of the outer casing 3010 of the speed limiter on the side of the frictional energy consumer, there is a brake mechanism 307 adapted to the frictional energy consumer. The brake mechanism 307 is provided with a brake handle 3011,

A rope reel 301 is provided on the rope reel shaft 302,

The wire rope 5 is wound and stored in the rope reel 301. The head end of the wire rope 5 is fixedly connected to the rope reel, and the tail end of the wire rope passes through the rope reel 301 and the outer casing of the overspeed governor 3010 successively, and then connects with the next follow-up overspeed governor.

On the basis of the above-mentioned technical scheme, the speed limiter 4 of continuous hair comprises:

A main frame 401 composed of two parallel frame plates, one of which is provided with a trigger mechanism 409,

Between the two frame plates, a sheave 402 is arranged at both ends along the length direction, and a low-speed gear 901 which rotates synchronously with the sheave 402 is arranged on the sheave 402,

A high-speed gear 403 meshing with the two low-speed gears 901 is provided between them,

A tensioner 404 is arranged on the frame plate at the inlet end of the wire rope,

The wire rope 5 from the previous stage speed governor, after passing through the tensioner 404, wraps n circles on the outer edges of the two sheaves, and then connects the rear stage speed governor,

The hub of the high-speed gear 403 is keyed to the high-speed shaft 405, and the high-speed shaft 405 is arranged between two frame plates,

The end of the high-speed shaft 405 on the side of the trigger mechanism 409 passes through the frame plate and is connected with the friction energy dissipator 305. The outer side of the frame plate is provided with a brake mechanism 307 adapted to the friction energy dissipator. On the brake mechanism 307 A brake handle 3011 is provided.

On the basis of the above-mentioned technical solutions, the frictional energy consumer 305 includes:

The hub plate 3051 keyed with the high-speed shaft 303 or 405,

The two traction arms 3052 are center-symmetrically riveted on the hub 3051,

The end of the traction arm 3052 away from the hub 3051 is provided with a traction plate 3053 hinged thereto,

The traction plate 3053 is provided with a friction block 3054 hinged thereto,

The traction plate 3053 is located in the friction ring 3055,

The friction block 3054 is provided with a groove towards the side of the friction ring 3055, the friction ring 3055 is placed in the groove, and the friction block 3054 can rotate in the friction ring,

The friction ring 3055 is coaxially fixed on the outer casing of the speed governor with the high-speed shaft.

On the basis of the above technical solutions, the brake mechanism 307 includes:

The brake disc 3071, which is riveted on the hub 3051, is located on the outside of the traction arm 3052,

The inner side of the brake disc 3071 is provided with a fixed jaw 3072,

The fixed jaw is fixed and vertically connected with the lead screw 3073,

The end of the leading screw 3073 towards the outside is provided with a movable jaw 3074, and the edge of the brake disc 3071 is placed between the fixed jaw 3072 and the movable jaw 3074,

The brake handle 3011 is fixed on the moving jaw 3074.

The high-rise building lifeline of the present invention is specially used for rescue of high-rise buildings. When disasters such as fires and earthquakes occur in high-rise buildings, people in distress can implement self-rescue and mutual rescue by using this device, and land on the ground in time and safely. , which has the following advantages:

1. It is easy to use and easy to control, and has few requirements for users; there are only two steps to operate this device: connecting and jumping (jumping out of the window), sagging of the hook during use, extension of the cantilever, and forward positioning of the next speed limiter , The expansion of the stopper column and the control of the rated load are all automatically completed, which is the simplest among similar products;

The device is fixedly installed on the floor of the window or balcony and is located under the ceiling. When a dangerous situation occurs, the first escaper connects with and jumps out of the first speed limiter, and the locking device (finger bolt machine) of the first speed limiter is automatically opened. , the telescopic cantilever (referred to as the cantilever) automatically extends out of the wall, so that the survivors will not scratch the outer wall of the building. The first escaper and the first speed limiter will fall slowly together, and the first speed limiter The steel wire rope (steel cable) inside is pulled out until the first survivor lands, at which time the steel wire rope has hung to the ground. When the first speed limiter is separated from the retractable cantilever, the subsequent speed limiter adjacent to it will automatically move to the front end of the retractable cantilever for backup, and the second escaper can connect with the subsequent speed limiter after about 5 seconds , jump out, and fall slowly along the same wire rope. After that, one person will be evacuated every 5 seconds.

2. The structure is reasonable and easy to use; the design principle of this device is: rather complicated structure must be exchanged for the convenience of use, escapers do not need to read the manual temporarily when a disaster occurs (such as under a flame); during the entire escape process , Escapers do not need to read the manual, they only need to complete the two actions of connecting and jumping out according to the simple diagram on the retractable cantilever, and the rest of the series of actions are automatically completed by the device without human intervention.

3. Good safety, with high safety factor, speed stability, and braking effectiveness; this device is currently the only high-rise building escape device in China that allows multiple escapers to escape continuously using the same wire rope. Among the products, it has the highest evacuation speed (720 people/hour) and the most convenient operation.

4. Maintenance-free, long service life, the use of non-corrosive materials, solid lubrication and other measures should ensure that it can still be used normally even if it has been idle for decades.

The high-rise building lifeline of the present invention has a reasonable structure, and is currently the only escape device in China that adopts multiple speed limiters to be installed in series on the same steel wire rope and can escape continuously; it occupies a small area and uses a 3mm bare steel wire rope , when stored for backup, under the same height limit, the volume occupied by the rigging of this device is only 1/27 of the current commercially available descending device; it is easy to use and easy to control, with less requirements for users, and can be controlled by the escapees independently Brake on the way to rescue those in distress on the floor below; it has good safety, and its evacuation speed is the highest among similar products; it is maintenance-free and has a long service life.

At present, for high-rise buildings in the market, the mainstream product sold for fire-fighting and lifesaving is the descending device, and the high-rise building lifeline of the present invention has the following advantages compared with it:

1. The descending device cannot brake halfway, so it can only save itself, and cannot realize mutual rescue on other floors. Since the speed limiter of the device lands together with the survivors, the escapers can independently control the midway braking, and the device has strong maneuverability, and can rescue people in distress on the floors below. It can also be carried by firefighters, and any hanging point can be selected for rescue.

2. Due to the limitation of its structure, the descending device is a piece of rigging that can be interchanged from end to end and used reciprocally. Therefore, the second person can only use it after the first person has landed. Due to the difference in the structure and principle of this device, there is no such limitation. After the first person falls, there is no need to wait for him to land. It only needs an interval of about 5 seconds, and the next person can jump out, which means that 2 to 5 people are allowed to synchronize on the same wire rope. fall. If there are 6 people in the escape room, it only takes 1 minute to escape all of them. This alone can give the device an advantage over similar products at the scene of a fire or in a fire drill.

Judging from the published information, this device is currently the only escape device in China that adopts multiple speed limiters installed in series on the same wire rope and can escape continuously. Its evacuation speed is the highest among current similar products. To make an image metaphor, the existing various descending devices are all rifles, which can only be fired single-shot, while this device is a machine gun, which can shoot continuously. This feature makes the device not only suitable for fire rescue, but also suitable for the cable drop operation of helicopters.

3. The wire rope of the descending device is too thick, which is a disadvantage. At present, the steel wire ropes of the descending devices produced by various factories all have to wrap the fabric protection layer to increase the coefficient of friction without exception, so that the outer diameter of the rigging can reach 9 mm. And this device is much more advantageous in this respect owing to directly using the naked wire rope of 3 millimeters. When stored for backup, under the same height limit, the volume occupied by the rigging of this device is only 1/27 of that of the current commercially available descending device.

4. The rigging length of the descending device must be "tailor-made". For example, the descending device with a design height of 10 floors can only be used on the 10th floor, and cannot be used on the 9th or 11th floor, or can only be used for It can be used by one person; this device has no such restriction, and it can be roughly divided into several blocks according to the height limit, such as one block for 5 floors or one block for 10 floors.

5. An ideal design should make the descending speed less affected by the size of the load. When the maximum load and the minimum load are applied to the descending device, the descending speed differs by as much as 9.3 times. Compared with this, this device is only less 2 times.

6. The descending device must drag down a free-hanging sling with a length of tens of meters, which may be stuck or entangled on the protrusions of the wall and cause hidden dangers. This device has no such hidden danger because of its different structures.

7. The device has no high requirements on materials and processing precision, so the cost is low. The cost of each speed limiter is about 200-300 yuan, and the cost of a complete set of products (taking 5 speed limiters as an example) is about more than a thousand yuan.

Description of drawings

The present invention has following accompanying drawing:

Fig. 1 is a schematic structural view of the present invention one (omit the continuous speed limiter, tail car, etc.),

Fig. 2 is a structural schematic diagram of the present invention two,

Fig. 3 is a schematic diagram of the use state of the present invention,

Figure 4 is a schematic diagram of the structure of the first speed limiter,

The structural schematic diagram of the first speed limiter in Fig. 5 2,

The structure diagram one of Fig. 6 follow-up speed limiter,

Fig. 7 is the structural schematic diagram of the speed limiter that continues to send out two,

The structural schematic diagram of the speed limiter of the follow-up speed limiter of Fig. 8 three,

The structural schematic diagram of Fig. 9 grooved wheel,

B-B sectional view of Fig. 10 and Fig. 12,

A-A sectional view of Fig. 11 and Fig. 12,

Figure 12 Schematic diagram of the inclination angle of the sheave,

Figure 13 Schematic diagram of the assembly method of the secondary speed limiter,

Figure 14 is a schematic diagram of the structure of the acceleration gear train,

Figure 15 Schematic diagram of the buffer structure,

Figure 16 Sectional view of the frictional energy dissipator,

Figure 17 Schematic diagram of the structure of the frictional energy dissipator,

Structural schematic diagram of Fig. 18 braking mechanism one,

The structural schematic diagram of Fig. 19 brake mechanism two,

Figure 20 Schematic diagram of the trigger mechanism,

The schematic diagram of the structure of the bolting machine in Fig. 21,

Figure 22 is a schematic structural view of the suspension mechanism.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 3, the high-rise building lifeline of the present invention includes:

A cantilever, the cantilever is a telescopic cantilever, comprising: an outer sleeve 1 and an inner sleeve 2,

Outer sleeve 1 is directly fixed (for example by suspender etc.) on the floor of window or balcony and is positioned under the ceiling, and its front end opening faces outside the window, and described window refers to the exterior window (the window that can be installed on the exterior wall that can shelter from wind and rain) , including but not limited to: exterior windows in rooms, exterior windows on balconies,

The inner sleeve 2 is arranged in the outer sleeve 1, and its front end opening is close to and faces out of the window. In the standby state, the inner sleeve 2 is received in the outer sleeve 1 and is in a storage state. In the use state, the front portion of the inner sleeve 2 extends Outer sleeve 1 is in extended state. When in use, the front part of inner sleeve 2 is located outside the window, and the front end of inner sleeve is a downward slope with a certain slope.

A roller 6 is provided between the outer sleeve 1 and the inner sleeve 2, so that the inner sleeve can slide in the outer sleeve, and the roller 6 can reduce the friction force during sliding. In the embodiment shown in Figures 1 to 3, there is a Two rollers 6, the arrangement of rollers 6 can be: one is arranged on the bottom surface of the front end of the outer sleeve, and the other is arranged on the top of the rear end surface of the inner sleeve, the number of rollers 6 is not limited to two, there can be more, specifically The setting position can be adjusted according to actual needs, and will not be described in detail here.

A first speed limiter 3 and at least one follow-up speed limiter 4 are arranged in the inner sleeve 2, and a rear car 7 is arranged behind the last follow-up speed limiter 4, and the first start speed limiter 3 and the follow-up speed limiter The total number of 4 determines the maximum number of people who can use this device to escape,

The first overspeed governor 3, the second overspeed governor 4 and the tail car 7 are connected in series successively through the same steel wire rope 5 (steel rope). The initial tie point, the tail car is the final tie point of the wire rope, and the wire rope from the first speed governor 3 passes through the subsequent speed limiters 4 in turn, and is finally fixed on the tail car 7, that is, each speed governor and The tailcars are connected in series,

The height of the tail car 7 is higher than the height of the first speed limiter 3 and the follow-up speed limiter 4, and the front end opening of the inner sleeve 2 is provided with a crossbeam 8 adapted to the height of the tail car 7, and the crossbeam 8 is used to block the tail car 7 so that it cannot be separated from the cantilever (specifically, it cannot be separated from the inner sleeve 2), for example: the setting position of the beam 8 is higher than the height of the first speed limiter 3 and the second speed limiter 4, but lower than the height of the tail car 7 , when the starting speed limiter 3 and the follow-up speed limiter 4 are all used, the tail car 7 moves forward to the crossbeam 8, and is blocked by the crossbeam 8, so that it cannot break away from the cantilever.

In this device, a steel wire rope passes through each speed limiter in turn, and finally is fixed on the tail car. The inside of the device must pass through the tensioner and wind several times on the two grooved wheels, as described later.

As a preferred solution, the front end of the inner sleeve 2 is provided with an inner sleeve buffer 3001, and the inner sleeve buffer 3001 and the outer wall of the building are connected by an outdoor steel wire rope 3002. When the inner sleeve 2 is in the extended state, the inner sleeve The barrel buffer 3001 and the outdoor steel wire rope 3002 generate tension on the front end of the inner sleeve 2 to ensure the position of the inner sleeve 2, limit and fix the inner sleeve 2 and bear most of the load. The inner sleeve buffer 3001 can be a commercially available product, and its structure can be seen in Figure 15, and will not be described in detail.

On the basis of the above technical solution, an extension control mechanism is provided between the outer sleeve 1 and the inner sleeve 2, and the extension control mechanism includes: a traction rope 11, a movable pulley 12, a lock plate 13, a breakable rope 14,

The movable pulley 12 is located at the bottom of the rear end face of the inner sleeve,

Traction rope 11 is thin steel wire rope, or is single-strand steel wire, or is twisted copper wire, and its one end (this end is also referred to as fixed end) is fixed on the bottom surface of outer sleeve 1 front end (such as being fixed on the bottom surface of outer sleeve front end) On one bolt), the other end (this end is also referred to as the moving end) goes around the movable pulley 12 and penetrates into the inner sleeve, and the other end of the penetration into the inner sleeve is connected to the starting overspeed governor 3 through a breakable rope 14, namely: The fixed end of the traction rope 11 is fixed on the bottom surface of the front end of the outer sleeve 1, the moving end of the traction rope 11 is connected with one end of the breakable rope, and the other end of the breakable rope is connected with the starting overspeed governor 3,

The strength of the breakable rope 14 is enough to pull the inner sleeve 2 out of the outer sleeve 1, but the strength of the breakable rope is less than the body weight of a person, so the limit is to ensure that the breakable rope can be broken at last, otherwise Survivors will not be able to separate from the traction rope, and will not be able to lower.

The lock plate 13 is located on the top surface of the outer sleeve 1 (there is a gap between the top surface of the outer sleeve 1 and the floor to ensure the installation of the lock plate 13), the lock plate 13 is L-shaped as a whole, and the outer sleeve 1 is provided with There is a locking plate hole, one end of the locking plate 13 is pivotally connected with the top surface of the outer sleeve 1, and the inner sleeve 2 in the use state can be limitedly locked when the other end passes through the locking plate hole.

To be specific: in the standby state, the inner sleeve 2 is received in the outer sleeve 1, at this time the lock plate 13 has passed through the hole of the lock plate, but it will not fall when it is supported by the top surface of the inner sleeve, and the lock plate is in an open state , see Figures 1 and 2,

In the state of use, the inner sleeve 2 extends out of the outer sleeve 1, and when the inner sleeve 2 no longer covers the lock plate hole (in this state, the inner sleeve 2 is fully pulled out to the maximum position, and the inner sleeve moves forward to its The rear edge of the lock plate 13 reaches the front of the lock tongue), the other end of the lock plate 13 falls automatically under the action of gravity without any support, and stretches into the outer sleeve 1, at this time the lock plate 13 blocks the inner sleeve 2 the rear end of the inner sleeve so that it cannot retreat and cut off the escape route of the inner sleeve, and the inner sleeve 2 remains in the state of being fully pulled out, as shown in FIG. 3 .

When in use, the first speed limiter 3 hangs the user and slides down, then: the breakable rope 14 is pulled, and the traction rope 11 is also pulled at the same time, because the movable pulley 12 is located at the bottom of the inner sleeve 2 rear end , as the first speed governor 3 slides down, the inner sleeve 2 is pulled out of the outer sleeve 1 by the traction rope 11 until the inner sleeve 2 is fully pulled out to the maximum position, and the locking plate 13 locks the inner sleeve 2, make it impossible to retreat, along with the starting speed limiter 3 continues to slide downwards, the breakable rope 14 is pulled off under the effect of people's weight, no longer pull the traction rope 11, and stretch out the control mechanism to complete its action process.

On the basis of the above technical solution, as shown in Figure 3, when the inner sleeve 2 is fully pulled out to the maximum position, the distance between its front end and the wall is 0.5-1m. This distance is limited to prevent the user (survivor) from rubbing against the outer wall.

On the basis of the above-mentioned technical scheme, a bolt machine 309 is provided at the end face of the first speed governor 3 front end (the side facing the crossbeam 8 is the front end), and the suspension mechanism 15 is assembled on the bolt machine 309, and the bolt machine 309 uses Cooperate with the crossbeam 8 when not in use to realize the positioning of the first speed limiter 3, so as to prevent the first speed limiter 3 from accidentally breaking away from the cantilever when no one is using it. When the bolt machine 309 is not in use, its length is higher than the crossbeam 8, so that the first speed governor 3 will not break away from the cantilever when no one is using it. When the first hair speed governor 3 is used, the bolt machine is pulled, and its The end face is designed as an inclined plane, and when it is moved away from the crossbeam 8, the first speed governor 3 will break away from the cantilever.

Specifically: as shown in Figure 21, the bolt machine 309 includes:

The main body 2101 of the bolt machine is strip-shaped as a whole, and the front side of the top end is provided with a bump 2102 in contact with the beam 8, and the end surface of the bump 2102 in contact with the beam 8 is a slope 2103,

Bolt machine main body 2101 is provided with two strip-shaped long holes 2104 along its length direction, and bolt machine fixing bolts are worn in the strip-shaped long holes 2104 and connected with the first speed governor 3, so that the bolt machine main body 2101 can move along the strip-shaped long hole slip,

The lower end of bolt machine main body 2101 is provided with extension spring fixed column, and one end of extension spring 2106 is connected with extension spring fixed column, and the other end of extension spring 2106 is fixed on the housing of starting overspeed governor 3, and the elastic force of extension spring 2106 makes inclined-plane 2103 is in contact with the beam 8 and does not break away from it,

The lower end of the bolt machine main body 2101 is also provided with a hook 2107 for installing the suspension mechanism 15 .

When the suspension mechanism 15 hangs the user, the suspension mechanism 15 pulls the main body 2101 of the bolt machine through the hook 2107, and the main body 2101 of the bolt machine slides along the strip-shaped long hole 2104. Then, this moment, then move along the inclined plane 2103, finally make the top of the hitch lower than the crossbeam, pass below the crossbeam, and the starting overspeed governor 3 breaks away from the cantilever and starts to work. The inclination angle of the slope 2103 is determined by the gravity and friction coefficient of a standard person, the angle between the slope and the horizontal plane is slightly larger than arctgμ, and μ is the friction coefficient between the governor casing and the inner sleeve.

On the basis of the above-mentioned technical scheme, as shown in Figure 6 and 20, a trigger mechanism 409 is provided at the rear end face of the secondary speed limiter 4, and the suspension mechanism 15 is assembled on the trigger mechanism 409, and the trigger mechanism 409 uses Cooperate with the crossbeam 8 to realize the limitation of the follow-up speed limiter 4 when the follow-up speed limiter 4 is in a standby state (referring to the front end of the follow-up speed limiter moved to the cantilever but there is no user to engage), so as to prevent the When no one was using it, the secondary speed limiter 4 in the standby state broke away from the cantilever unexpectedly. The same as the bolt machine: when the trigger mechanism 409 is not in use, its length is higher than the crossbeam 8, so that the secondary speed limiter 4 will not break away from the cantilever when no one is using it. When the secondary speed limiter 4 is used , the trigger mechanism is pulled and moves away from the crossbeam 8, and the speed limiter 4 of the follow-up hair breaks away from the boom.

Specifically: as shown in Figure 20, the trigger mechanism 409 includes:

Stall column 2001, spiral clip 2002 and diagonal brace 2003,

The lower end of the gear post 2001 is rotatably connected to the housing of the secondary overspeed governor 4, and another hook 2107 is provided at the upper end, and the other hook 2107 is used for installing the suspension mechanism 15,

A first cylinder 2004 is provided on the side wall (left side wall and/or right side wall) of the stop post 2001,

The suspension mechanism 15 is provided with a second cylinder 2005, and the second cylinder 2005 and the first cylinder 2004 are arranged on the same side,

The spiral clip 2002 is provided with a first slot 2006 and a second slot 2007,

The first card slot 2006 faces the front side and is an arc-shaped card slot, which is a spiral notch.

The second card slot 2007 faces the rear side, is a strip-shaped card slot, and slopes upwards, which is a straight line slot.

The first clamping groove 2006 is adapted to the first cylinder 2004 for clamping the first cylinder 2004,

The second clamping groove 2007 is adapted to the second cylinder 2005 for clamping the second cylinder 2005,

The front end 2008 of the helical clip is rotatably connected with the housing of the secondary speed limiter 4, and a torsion spring (not shown in the figure) is provided on the connecting shaft there, and the torsion spring is used to give the helical clip an upward force , make the first cylinder 2004 and the second cylinder 2005 snap into the first slot 2006 and the second slot 2007 respectively without moving. Hanging mechanism 15 fits on the stop column 2001,

The same side of the first cylinder 2004 is also provided with a third cylinder (pivot) 2009, the third cylinder (pivot) 2009 is fixed on the side wall of the retaining column 2001, and is located above the first cylinder 2004,

One end of the diagonal brace 2003 is rotatably connected to the third cylinder 2009 (pivot), and the other end is rotatably connected to the joint between the front end 2008 of the helical clip and the housing of the secondary speed limiter 4 .

During the standby state, the follow-up speed limiter 4 is at the front end of the inner sleeve, and the length of the stop post 2001 is higher than the crossbeam 8, so that the follow-up speed limiter 4 will not break away from the cantilever when no one is using it.

When the suspension mechanism 15 hangs the user, the suspension mechanism 15 is pulled due to the body weight, and the buffer is stretched by overcoming the elastic force of the spring in the buffer. When the cable clamp rotates downward with its front end 2008 as the axis, the first cylinder 2004 slides along the arc-shaped first slot 2006 until it slides out of the first slot 2006. During this process, the diagonal brace 2003 is straightened from the folded state It becomes the unfolded state. The diagonal brace is composed of two sections of plates, hinged in the middle.

The working surface of the first slot 2006 of the helical clip is a converging spiral, and its rotation forces the gear column to overcome the sliding force of the machine to offset. Generally, the gravity of the user of the machine is enough to force the helical clip to complete the prescribed The angular displacement of the gear column is released, that is to say, the release of the speed limiter of the continuous transmission is realized, and it slides out of the inner sleeve. Along with the diagonal brace 2003 is straightened, the gravity line of the user is below the suspension mechanism 15 at this moment, and draws a reasonable distance with the entrance end of the steel wire rope of the follow-up overspeed governor 4 . But if the number of people running on the wire rope below reaches the rated load M, the friction between the helix and the first cylinder 2004 on the retaining column will be very large, and the weight of the user of this machine is not enough to overcome this friction. The clip will not move. Once the total load is less than M, the helical clip will release the stop post. The parameters of the spiral are determined by the rated load M, the slope of the front end of the inner sleeve, a user's standard body weight and the coefficient of friction.

The setting of the trigger mechanism is based on the following considerations:

⑴In the standby state, the secondary speed limiter must remain at the exit position of the inner sleeve 2, and when the user jumps out of the load, the subsequent speed limiter should leave the exit position and slide out from the inner sleeve 2. The trigger mechanism is to realize this function The lock-unlock mechanism;

⑵Because this device allows multiple speed limiters (starting, continuing) to fall sequentially on the same wire rope, if the interval is small or the floor is high, there may be multiple users on the wire rope at the same time and fall at the same time, in order to prevent If the wire rope is overloaded, when the wire rope has carried M (M is the maximum allowable number of people considering the safety factor), the M+1th person is locked by the trigger mechanism and cannot leave the cantilever until the bottom person on the wire rope falls to the ground, that is, the wire rope When the number of people on board is reduced to M-1, the trigger mechanism is automatically unlocked, and the people who were originally waiting are separated from the cantilever and automatically fall along the wire rope.

⑶ Except for the first speed limiter, the subsequent users are all in the middle of the wire rope, that is, there is a wire rope above him and below him. If there are users below him who have not yet landed, the wire rope at this time is under great tension , very hard. In order to prevent the steel wire rope from rubbing against the user's body, it is necessary to separate the steel wire rope from the user's gravity line by a certain distance, not less than half the shoulder width. The trigger mechanism also has this function (realized by the diagonal brace 2003).

On the basis of the above technical solution, as shown in Figures 2 and 3, a strip-shaped opening groove is provided on the bottom surface of the front part of the inner sleeve 2, and the opening of the strip-shaped opening groove communicates with the front end of the inner sleeve 2.

The suspension mechanism 15 on the starting overspeed governor 3 hangs down from the bar-shaped opening groove,

Suspension mechanism 15 on the secondary speed limiter 4 is placed flat in the inner sleeve 2, and when the secondary speed limiter 4 moves to the bar-shaped opening slot, the suspension mechanism on the secondary speed limiter 4 also moves from The bar-shaped opening slot hangs down.

When the first speed limiter 3 located at the front opening of the inner sleeve 2 is used and falls, it is pulled by the wire rope, and the follow-up speed limiter 4 at the back moves forward automatically together with the tail car. When the follow-up speed limiter 4 moves to the bar shape When at the open slot place, the suspension mechanism on the speed limiter 4 of the continued hair hangs down from the strip open slot for standby use.

When the secondary speed limiter 4 located at the opening of the front end of the inner sleeve 2 is used and falls, it is pulled by the wire rope, and the secondary speed limiter 4 at the back moves forward automatically together with the tail car. When the secondary speed limiter 4 moves to the bar When it is at the opening of the inner sleeve 2, the suspension mechanism on the continuous speed limiter 4 hangs down from the strip opening for standby until the tail car 7 moves to the opening at the front end of the inner sleeve 2, and the crossbeam 8 blocks the tail car 7 so that it cannot be disengaged. The front opening of the inner sleeve 2.

On the basis of the above technical solution, as shown in Figure 22, the suspension mechanism 15 includes:

The lower end is provided with a suspension mechanism buffer 2201 with a suspension mechanism hook 2202 .

The suspension mechanism buffer 2201 is used to connect with the bolt 309 of the first speed governor 3 , or connect with the trigger mechanism 409 of the second speed governor 4 .

The user needs to connect with the hook of the suspension mechanism when using it. The "connection" means that the user puts on the safety belt, and then buckles the ring or hook of the safety belt with the hook of the suspension mechanism.

FIG. 22 also shows another form of "connection": the user buckles the wrist sleeve 2203 on the wrist, and then grasps the suspension ring 2204 to jump out. Ring 2204 is installed on the hook of the suspension mechanism, and the structure of the wristband is the same as the leather watch strap, but it must have sufficient strength. The wristband is connected with the suspension ring by the wristband wire rope or chain 2205. This connection method mainly relies on the hand to hold the ring tightly. The function of the wristband is to provide a second insurance when an abnormal situation causes the hand to slip off the ring. This connection method is limited to people with good physique when seat belts are not enough.

On the basis of the above technical solution, as shown in Figures 4 and 5, the first speed limiter 3 includes:

The outer shell 3010 of the speed governor has a rope reel shaft 302 and a high-speed shaft 303 in the center of its inner cavity, and the rope reel shaft 302 and the high-speed shaft 303 are coaxially arranged.

One side of the high-speed shaft 303 is provided with a medium-speed shaft 308 parallel to it, and the medium-speed shaft 308 is arranged between two frame plates, and the two frame plates are fixedly connected with the outer shell 3010 of the speed limiter.

An acceleration gear train 304 is provided on the intermediate speed shaft 308. In the embodiment shown in FIG. 4, the acceleration gear train 304 includes four gears,

As shown in Figure 14, described acceleration gear train 304 comprises: the pinion gear that is used to engage with the bull gear on the rope reel shaft, the bull gear that is used to engage with the pinion gear on the high-speed shaft, the speed ratio of acceleration gear train 304 The selection should ensure that the standard person (65kg) descends at the speed (1.5m/s) stipulated in the ministry standard,

A frictional energy consumer 305 is provided on the side of the high-speed shaft 303 away from the rope reel shaft 302,

On the outer side of the outer casing 3010 of the speed limiter on the side of the frictional energy consumer, there is a brake mechanism 307 adapted to the frictional energy consumer. The brake mechanism 307 is provided with a brake handle 3011,

A rope reel 301 is provided on the rope reel shaft 302,

The steel wire rope 5 is wound and stored in the rope reel 301. The head end of the steel wire rope 5 is fixedly connected to the rope reel. The coiling direction of the steel wire rope 5 should ensure that the frictional energy dissipator rotates in the design direction when it is released, and the tail end of the steel wire rope passes out of the rope in turn. After the disc 301 and the overspeed governor outer casing 3010, it is connected with the next subsequent overspeed governor.

The settings of the bolt machine 309 and the suspension mechanism 15 refer to the foregoing.

If it is necessary for the property to monitor the use of the escape system, a thin wire can be tied to the first speed limiter. When the thin wire is pulled when escaping, its disconnection can be converted into an electrical signal and sent to the property's general manager. console.

On the basis of the above-mentioned technical scheme, as shown in Figures 6, 7, 8, and 13, the speed limiter 4 for continuous transmission includes:

A main frame 401 composed of two parallel frame plates, one of which is provided with a trigger mechanism 409,

Between the two frame plates, a sheave 402 is provided at both ends along the length direction, and a low-speed gear 901 that rotates synchronously with it is provided on the sheave 402. The structures of the sheave 402 and the low-speed gear 901 are shown in FIG. 9 , including a large-diameter end and a small-diameter end, teeth are provided on the circumferential surface of the large-diameter end to form a low-speed gear 901, and a groove for accommodating the steel wire rope 5 is provided on the circumferential surface of the small-diameter end, and the sheave is used for coupling with the steel wire rope. The large-diameter end and the small-diameter end can be integrally formed, or two independent parts can be riveted.

A high-speed gear 403 meshing with the two low-speed gears 901 is provided between them,

A tensioner 404 is arranged on the frame plate at the inlet end of the wire rope,

The steel wire rope 5 from the previous stage speed governor passes through the tensioner 404, and wraps n circles (generally n=3～5) on the outer edge of the two sheaves, and then connects the rear stage speed governor,

Here, the tension of the steel wire rope at the entrance (including the weight of the previous speed limiter and the user below and the weight of the previous steel wire rope) and the friction provided by the tensioner constitute the tension of the loose edge in the mechanical relationship, while the tension of the steel wire rope at the exit end It is the weight of the user of the machine plus all the gravity below it, which is the tension of the tight side; in the storage state, the wire rope at the inlet end is connected to the previous speed limiter, or connected to the first speed limiter, and the wire rope at the outlet end is placed horizontally , connected with the next speed governor, if the machine is the last speed governor, the steel wire rope at the outlet end is connected with the tail car, the hub is connected with the high-speed shaft 405, and the high-speed shaft 405 is arranged between two frame plates,

The end of the high-speed shaft 405 on the side of the trigger mechanism 409 passes through the frame plate and is connected with the friction energy dissipator 305. The outer side of the frame plate is provided with a brake mechanism 307 adapted to the friction energy dissipator. On the brake mechanism 307 A brake handle 3011 is provided.

See Figure 13 for the assembly method of the secondary speed limiter 4.

The Euler formula about the transmission wrap angle is as follows:

Exportable:

This formula gives the effective tension as a multiple of the loose edge tension.

Among them: Ft——tight edge tension (N)

Fs——Loose edge tension (N)

Fe——effective tension (N)

μ - coefficient of friction

θ——wrap angle (rad)

If the friction coefficient is taken as 0.15 of the steel material, and the wrap angle is expressed as kπ radians, then the above formula can be rewritten as:

By correctly selecting the wrap angle and loose edge tension, the effective tension can reach the design value, for example, 2 times or 2.5 times the standard weight of the machine.

On the basis of the above technical solutions, as shown in Figures 10, 11, and 12, the flat winding of the steel wire rope on the two sheaves may lead to the following result: that is, continuous operation will cause the steel wire rope to move along the direction of the sheave shaft until overlapping occurs. pressure. Adopting the design as shown in the figure "continuation, sheave inclination angle" (Fig. 10, Fig. 11) can realize the stable operation of the wire rope without overlapping.

Two sheaves are symmetrically inclined, and the angle of the inclination is calculated according to the following formula:

Among them: d—the diameter of the steel wire rope; - sheave diameter. This is the axis-to-axis inclination, or half of it if it is to the normal.

On the basis of the above technical solutions, as shown in Figures 16 and 17, the frictional energy consumer 305 includes:

The hub plate 3051 keyed with the high-speed shaft 303 or 405,

The two traction arms 3052 are center-symmetrically riveted on the hub 3051,

The end of the traction arm 3052 away from the hub 3051 is provided with a traction plate 3053 hinged thereto,

The traction plate 3053 is provided with a friction block 3054 hinged thereto,

The traction plate 3053 is located in the friction ring 3055,

The friction block 3054 is provided with a groove towards the side of the friction ring 3055, the friction ring 3055 is placed in the groove, and the friction block 3054 can rotate in the friction ring,

The friction ring 3055 is coaxially fixed on the outer casing of the speed governor with the high-speed shaft.

Assuming that the mass of the friction block is m and the radius of gyration is r, the friction torque provided by the friction energy dissipator is

T=μmv ² (v is the linear speed of the friction block)

Due to the negative correlation between the falling speed and the friction force, and the nonlinear relationship between the friction force and the speed, it is determined that the mechanism has a deep speed negative feedback characteristic, which makes the machine have good speed stability and anti-interference.

The speed negative feedback characteristic means: firstly, it must be determined that there is a fixed multiplier between the descending linear velocity of the escapee and the running linear velocity of the friction block, and when the gravity of the escapee is constant, there is a relationship between the descending speed and the friction force of the friction block. The corresponding relationship is determined, which is easy to understand from the meaning of energy conservation, the gravitational potential energy released by the escapee is equal in magnitude to the heat energy generated by the friction of the friction block. Assuming that the line speed of the survivor increases to twice the normal speed due to unknown reasons, the line speed of the friction block will also increase by 2 times than the normal speed. But the centripetal force F∝v ² , and the friction force f=μF, so the increase of the speed by 2 times will cause the friction force to increase by 2 ² =4 times, the sudden increase of the friction force will lead to the sudden drop of the speed, so the speed will return to normal soon . Conversely, if the speed is reduced to 1/2 due to unknown reasons, the friction force will be reduced to 1/4, causing the speed to return to normal.

As a preferred solution, two radial plates 3056 are center-symmetrically riveted on the hub 3051 , and the two radial plates 3056 and the two traction arms 3052 are evenly distributed. Because the friction block is hinged, the upper friction block will automatically droop to the position close to the shaft in the non-working state, and it may be stuck when starting. Adding two radial plates 3056 can prevent the friction block from drooping excessively, but they No contact with the friction block, no hindrance.

On the basis of the above technical solutions, as shown in Figures 18 and 19, the braking mechanism 307 includes:

The brake disc 3071, which is riveted on the hub 3051, is located on the outside of the traction arm 3052,

The inner side of the brake disc 3071 is provided with a fixed jaw 3072,

The fixed jaw is fixed and vertically connected with the lead screw 3073,

The end of the leading screw 3073 towards the outside is provided with a movable jaw 3074, the edge of the brake disc 3071 is placed between the fixed jaw 3072 and the moving jaw 3074, and the moving jaw 3074 is threadedly matched with the leading screw 3073.

The brake handle 3011 is fixed on the moving jaw 3074.

When braking is required, pull the brake handle to rotate the movable jaws to tighten the gap, block the brake disc, stop the high-speed shaft from rotating, and stop releasing the wire rope.

As a preferred solution, as shown in FIG. 19 , there are N fan blades 3076 on the brake disc. During normal operation, the rotation of the brake disc can air-cool the frictional energy dissipator.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (9)

1. high building life saving, including cantilever, the cantilever include：Outer sleeve (1) and inner sleeve (2), it is characterised in that：

Outer sleeve (1) is directly anchored on the floor of window or balcony and under the ceiling, its front opening towards outside window,

Inner sleeve (2) is in the outer sleeve (1), and its front opening closes on and towards outside window,

Roller (6) is provided between outer sleeve (1) and inner sleeve (2), inner sleeve is slided in outer sleeve,

A starting limiter of speed (3) and at least one supervention limiter of speed (4), last supervention speed limit are provided with inner sleeve (2) Trailer (7) is provided with behind device (4),

It is sequentially connected in series between starting limiter of speed (3), supervention limiter of speed (4), trailer (7) by same steel cable (5),

The height of trailer (7) is higher than at the height of starting limiter of speed (3) and supervention limiter of speed (4), the front opening of inner sleeve (2) Provided with a crossbeam (8) being adapted to trailer (7) height, crossbeam (8) is used to stop that trailer (7) prevents it from departing from cantilever；

The supervention limiter of speed (4) includes：

The main frame (401) being made up of two pieces of parallel deckle boards, one of deckle board is provided with trigger mechanism (409),

Between two deckle boards, a sheave (402) is respectively provided with two ends along its length, sheave (402) is provided with same with it The low-speed gear (901) rotated is walked,

Provided with the high gear (403) engaged respectively with the two between two low-speed gears (901),

Stretcher (404) is provided with the deckle board of steel wire rope arrival end,

Steel wire rope (5) from previous stage limiter of speed, it is flat around n circles in the outer rim of two sheaves after stretcher (404), then Rear stage limiter of speed is connected,

The hub of high gear (403) is connected with high speed shaft (405) key, and high speed shaft (405) is located between two deckle boards,

High speed shaft (405) end provided with trigger mechanism (409) side passes deckle board, and is connected with friction energy dissipation device (305), should The outside of deckle board is provided with the braking mechanism (307) being adapted to friction energy dissipation device, and braking mechanism (307) is provided with brake lever (3011)；

Described two sheaves (402) are symmetrically obliquely installed, and the angle at inclination angle is calculated as follows：

Wherein：D-wirerope diameter；φ-sheave diameter.

2. high building life saving as claimed in claim 1, it is characterised in that：It is provided between outer sleeve (1) and inner sleeve (2) Controlling organization is stretched out, the stretching controlling organization includes：Pull rope (11), movable pulley (12), jam plate (13), can break rope (14),

Movable pulley (12) is located at the bottom of inner sleeve tube rear end end face,

One end of pull rope (11) is fixed on the bottom surface of outer sleeve (1) front end, in the other end is bypassed and penetrated after movable pulley (12) Sleeve, the other end for penetrating inner sleeve is connected on starting limiter of speed (3) by the rope (14) that can break,

The intensity of the rope (14) that breaks enough pulls out inner sleeve (2) outside outer sleeve (1), but the intensity for the rope that can break is less than The body weight of people,

Jam plate (13) is on the top surface of outer sleeve (1), and jam plate (13) is overall L-shaped, and outer sleeve (1) is provided with jam plate hole, lock One end of plate (13) is pivotally connected with the top surface of outer sleeve (1), can be by the inner sleeve (2) during use state when the other end is through jam plate hole Limitation locking.

3. high building life saving as claimed in claim 2, it is characterised in that：Inner sleeve (2) is completely pulled out of to dominant bit When putting, the distance between its front end and wall are 0.5~1m.

4. high building life saving as claimed in claim 1, it is characterised in that：Set at starting limiter of speed (3) front end surface Have bolt machine (309), suspension gear (15) is assemblied on bolt machine (309), the bolt machine (309) be used for when not in use with crossbeam (8) coordinate and realize to the spacing of starting limiter of speed (3)；

Trigger mechanism (409) is provided with supervention limiter of speed (4) rear end end, suspension gear (15) is assemblied in trigger mechanism (409) on, the trigger mechanism (409) is used to coordinate realization pair with crossbeam (8) when supervention limiter of speed (4) is in stand-by state Supervention limiter of speed (4) it is spacing.

5. high building life saving as claimed in claim 4, it is characterised in that：The anterior bottom surface of inner sleeve (2) is provided with bar Shape open slot, the front end of the open communication inner sleeve (2) of strip gab groove,

Suspension gear (15) on starting limiter of speed (3) hangs at strip gab groove,

Suspension gear (15) on supervention limiter of speed (4) is lain against in inner sleeve (2), when supervention limiter of speed (4) is moved to bar shaped When at open slot, the suspension gear on supervention limiter of speed (4) also hangs at strip gab groove.

6. high building life saving as claimed in claim 4, it is characterised in that：Suspension gear (15) includes：

The suspension gear buffer (2201) of (2202) is linked up with provided with suspension gear in lower end.

7. high building life saving as claimed in claim 1, it is characterised in that：Starting limiter of speed (3) includes：

Limiter of speed shell body (3010), is provided with cheese axle (302) and high speed shaft (303), cheese axle (302) between two parties in its inner chamber It is coaxially disposed with high speed shaft (303),

The side of high speed shaft (303) is provided with the middling speed axle (308) of setting in parallel, middling speed axle (308) located at two deckle boards it Between, two deckle boards are fixedly connected with limiter of speed shell body (3010),

Accelerating gear system (304) is provided with middling speed axle (308),

The accelerating gear system (304) includes：For the little gear engaged with the gear wheel on cheese axle, for high speed shaft Little gear engagement gear wheel,

The side away from cheese axle (302) is provided with friction energy dissipation device (305) on high speed shaft (303),

On the outside of the limiter of speed shell body (3010) of friction energy dissipation device side, provided with the braking mechanism being adapted to friction energy dissipation device (307), braking mechanism (307) is provided with brake lever (3011),

Cheese (301) is provided with cheese axle (302),

Steel wire rope (5) is wound and is stored in cheese (301), and the head end of steel wire rope (5) is fixedly connected with cheese, steel wire rope tail end Pass after cheese (301), limiter of speed shell body (3010), be connected with next supervention limiter of speed successively.

8. high building life saving as claimed in claim 7, it is characterised in that：Friction energy dissipation device (305) includes：

The hub (3051) coordinated with high speed shaft (303) or (405) key,

Two draft arms (3052) are centrosymmetric to be riveted on hub (3051),

End of the draft arm (3052) away from hub (3051) is provided with the towing plate (3053) being hinged with it,

Towing plate (3053) is provided with the brake pad (3054) being hinged with it,

Towing plate (3053) is located in drag ring (3055),

Brake pad (3054) is provided with groove towards the side of drag ring (3055), and drag ring (3055) is placed in groove, and friction Block (3054) can be turned round in drag ring,

Drag ring (3055) is coaxially attached on limiter of speed shell body with high speed shaft.

9. high building life saving as claimed in claim 8, it is characterised in that：Braking mechanism (307) includes：

Brake disc (3071), it is riveted on hub (3051), the outside positioned at draft arm (3052),

The inner side of brake disc (3071), which is provided with, determines jaw (3072),

Determine jaw and leading screw (3073) it is fixed and it is vertical be connected,

Leading screw (3073) is provided with movable clamp port (3074) towards the end in outside, and the edge of brake disc (3071), which is placed in, determines jaw (3072) between movable clamp port (3074),

Brake lever (3011) is fixed on movable clamp port (3074).