CN105903130B

CN105903130B - Multifunctional firefighter lifesaving device

Info

Publication number: CN105903130B
Application number: CN201610466725.9A
Authority: CN
Inventors: 孙春辉; 耿广发; 金险峰; 张磊; 李震; 周锋; 章文锋; 张明伟
Original assignee: Chinese People's Armed Police Force Shanghai Fire Brigade Pudong Detachment; Shanghai Fire Research Institute of Ministry of Public Security
Current assignee: Chinese People's Armed Police Force Shanghai Fire Brigade Pudong Detachment; Shanghai Fire Research Institute of Ministry of Public Security
Priority date: 2016-06-23
Filing date: 2016-06-23
Publication date: 2021-09-14
Anticipated expiration: 2036-06-23
Also published as: CN105903130A

Abstract

The invention relates to a multifunctional firefighter lifesaving device, belonging to the field of firefighting equipment. A multifunctional firefighter's life-saving device, comprising a shell with one end open and an end cover closed on the shell opening, the shell is fixed with a main shaft, and the main shaft is sequentially sleeved with an escape wheel and a rope reel , coil spring and ratchet wheel, escapement fork is installed in the position corresponding to the escape wheel in the casing, and the side end face of the rope coil wheel close to the escape wheel is provided with a connected centrifugal throwing block and a throwing block spring, the winding rope The other end face of the wheel has an indented concave platform, the coil spring is embedded in the concave platform, the rope winding wheel is wound with a rope, one end of the rope is fixed on the rope winding wheel, and the other end extends to the shell Outside the body, a ratchet pawl is installed in the housing at a position corresponding to the ratchet wheel, the ratchet pawl is connected with a ratchet spring in the housing, and the ratchet pawl is also provided with a multi-function button extending out of the housing. By using the present invention, the firefighter's self-rescue and escape during the task process can be realized.

Description

Multifunctional firefighter lifesaving device

Technical Field

The invention relates to the field of fire fighting equipment, in particular to a multifunctional fireman life saving device.

Background

At present, a firefighter lifesaving rope is generally carried in a winding mode, when the lifesaving rope is used, the rope in the winding state needs to be untied, knotting and other operations are carried out according to the required length or the using mode, and the operation efficiency is low; when the rope is used, knotting among a plurality of ropes is easy to happen, so that the use is influenced; the rope needs to be wound again after being used up, which is very inconvenient. The utilization rate of the fire-fighting life-saving rope in disaster rescue is low due to various inconvenient factors, and the use of the life-saving rope is not convenient for quick danger avoidance in emergency situations.

Disclosure of Invention

The invention aims to solve the problems and provides a multifunctional firefighter lifesaving device to realize self-rescue escape of a firefighter in a task process.

The purpose of the invention is realized as follows:

a multifunctional firefighter lifesaving device is characterized by comprising a shell with an opening at one end and an end cover covering the opening of the shell, wherein a main shaft is fixedly arranged in the shell, an escape wheel, a rope winding wheel, a coil spring and a ratchet wheel are sequentially sleeved on the main shaft, the rope winding wheel is fixedly connected with the ratchet wheel and rotates on the main shaft, an escape fork is arranged in the shell corresponding to the escape wheel, a centrifugal throwing block and a throwing block spring which are connected are arranged on the end surface of one side of the rope winding wheel close to the escape wheel, an inwards concave platform is arranged on the end surface of the other side of the rope winding wheel, the coil spring is embedded in the concave platform, the outer ring of the coil spring is fixed with the inner wall of the concave platform, the inner ring of the coil spring is fixed with the main shaft, a rope is wound on the rope winding wheel, one end of the rope is fixedly connected with the rope winding wheel, the other end of the rope extends out of the, the pawl is also provided with a multifunctional button extending out of the shell.

The pawl is arranged in the shell through a pin shaft, and the pin shaft penetrates through the center of the pawl; the multifunctional button is positioned above the pawl; the pawl spring is connected with one end of the pawl, which is contacted with the ratchet wheel, so that the pawl approaches to the ratchet wheel direction and is propped into the ratchet clearance.

Wherein, the pawl spring is a pressure spring or a tension spring.

Wherein, the pawl is larger than the other end with the one end that contacts with the ratchet, and has the tip that stretches to the relative direction of ratchet tooth point.

The shell is of a hollow cylindrical structure, and the spindle is located on the axis of the shell.

And a clamping tooth is arranged on the end face of one side of the escape wheel close to the rope winding wheel, and a corresponding buckle can be realized between the centrifugal throwing block and the clamping tooth.

The centrifugal throwing block is arranged on the rope winding wheel through a pin shaft, the pin shaft is located at the eccentric position of the centrifugal throwing block, and the throwing block spring is connected with one end, far away from the pin shaft, of the centrifugal throwing block.

The invention has the beneficial effects that:

1) when the device works, the rope is always in a semi-tense state, is not easy to knot, and is simple and convenient to hook and hang.

2) When a flashover accident occurs, the rope in the device can be lengthened, so that a fireman can passively or actively move along the impact direction after being impacted, and the injury of the impact to the fireman can be relieved.

3) The firefighter can slowly descend to other safety floors to escape or hang to wait for rescue by using the device.

4) In the process of slowly descending or daily operation, when the rope is pulled to the required length, the multifunctional button is opened, and the operation can be carried out under the protection of the fixed height or length.

5) When the hanging state climbs, the device can play a role in assisting climbing, and even if the person is lost or needs to have a rest, the safety of firemen can be protected.

6) After the device is used, the rope is automatically collected into the shell by unlocking, and the manual winding and other operations are not needed, so that the device is convenient and quick.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a structural view of the inside of the casing of the present invention.

Fig. 3 is a structural view of an escape wheel.

Detailed Description

The invention will be further elucidated with reference to the specific embodiments and the accompanying drawings.

As shown in fig. 1 and 2, a multifunctional firefighter lifesaving device comprises a shell 1 with an opening at one end and an end cover 2 covering the opening of the shell 1.

The shell 1 is a hollow cylindrical structure, a main shaft 3 is fixedly arranged in the shell 1, the main shaft 3 is positioned on the axis of the shell 1, an escape wheel 4, a rope winding wheel 5, a coil spring 6 and a ratchet wheel 7 are sequentially sleeved on the main shaft 3, and the rope winding wheel 5 is fixedly connected with the ratchet wheel 7 and rotates on the main shaft 3.

A escapement fork 8 is arranged in the shell 1 at a position corresponding to the escapement wheel 4, and a latch 14 is arranged on one side end face of the escapement wheel 4 close to the winding wheel 5.

The end face, close to the escapement wheel 4, of one side of the rope winding wheel 5 is provided with a centrifugal throwing block 9 and a throwing block spring 10 which are connected with each other, the centrifugal throwing block 9 is specifically installed on the rope winding wheel 5 through a pin shaft, the pin shaft is located at the eccentric position of the centrifugal throwing block 9, the throwing block spring 10 is specifically connected with one end, far away from the pin shaft, of the centrifugal throwing block 9, and corresponding buckling can be achieved between the centrifugal throwing block 9 and a clamping tooth 14 on the escapement wheel 4.

The other end face of the rope winding wheel 5 is provided with a sunken concave table, the coil spring 6 is embedded in the concave table, the outer ring of the coil spring 6 is fixed with the inner wall of the concave table, the inner ring of the coil spring 6 is fixed with the main shaft, a rope 11 is wound on the rope winding wheel 5, one end of the rope 11 is fixedly connected with the rope winding wheel 5, and the other end of the rope 11 is a free end and extends out of the shell 1. When the free end of the rope 11 is pulled, the rope sheave 5 rotates, so that the coil spring 6 is tightened; when the free end of the rope 11 is released, the rope wheel 5 is rotated by the coil spring 6, and the rope 11 is automatically retracted and wound on the rope wheel 5.

The coil spring 6 is adopted, so that the rope 11 is always in a semi-tense state and is not easy to knot.

When rope 11 is elongated fast, rope 11 can drive the high-speed rotation of rope wheel 5 for the centrifugal flail piece 9 outwards throws out under the effect of centrifugal force and realizes corresponding the buckle with latch 14 on escape wheel 4, thereby drives escape wheel 4 rotatory, and escape wheel 4 can be deceleration motion under the effect of escape fork 8, thereby makes to reduce the speed that rope 11 was drawn out.

A pawl 12 is arranged in the shell 1 corresponding to the ratchet 7, the pawl 12 is arranged in the shell 1 through a pin shaft, the pin shaft penetrates through the center of the pawl 12, a multifunctional button 13 extending out of the shell 1 is arranged above the pawl 12, one end of the pawl 12, which is in contact with the ratchet 7, is connected with a pawl spring 15, so that the pawl 12 approaches to the ratchet 7 and is propped against the gap of the ratchet, and meanwhile, one end of the pawl 12, which is in contact with the ratchet 7, is larger than the other end and is provided with a tip portion protruding towards the opposite direction of the tooth tip of the ratchet 7.

The detent spring 15 here may be a compression spring or a tension spring.

The head of the pawl 12 is always close to the ratchet wheel 7 due to the action of the pawl spring 15; when the multifunctional button 13 abuts against the central shaft position of the pawl 12, the multifunctional button 13 does not act on the pawl 12, the pawl 12 is in light contact with the ratchet wheel 7 under the action of the pawl spring 15, and the ratchet wheel 7 can only flick the pawl 12 in a single direction to rotate; when the multifunctional button 13 is moved to abut against the big head end of the pawl 12, the tip of the pawl 12 abuts against the ratchet wheel 7 and cannot be lifted up, so that the ratchet wheel 7 cannot rotate, and the length of the rope 11 is locked; when the multifunctional button 13 is moved to abut against the small end of the pawl 12, the tip of the pawl 12 is lifted away from the ratchet wheel 7, and the ratchet wheel 7 can rotate freely in both directions.

When the device is used, the device is hung on a fire-fighting waistband, the free end of the rope is hung on a firm fixed object according to the actual situation on site before operation, and a fireman can perform the operation within the range of the rope. Due to the coil spring, the rope can be stretched or automatically shortened along with the movement of the firemen, and the rope is always in a semi-tense state and is not easy to knot.

When a fireman falls out of a building due to impact of bombing, or jumps out of the building due to emergency danger avoidance such as avoidance of high-temperature flame, toxic smoke, partial collapse and the like, the rope can be elongated to drive the rope winding wheel to rotate at a high speed, so that the centrifugal throwing block is thrown away under the action of centrifugal force and is buckled with the latch of the escape wheel, and the escape wheel is driven to rotate.

In daily operation, the length of the rope needs to be fixed to limit the working range, the multifunctional button can be toggled after the rope in the device is pulled to the required length, and the pulled-out length of the rope is locked and used as a fixed-length protection rope.

When climbing, the multifunctional button can be placed in the middle position, and when climbing, the multifunctional button automatically retracts the rope and is locked in a single direction, so that on one hand, the multifunctional button can work at a fixed height, and on the other hand, even if a user loses hands and slips in the climbing process, the multifunctional button can be locked immediately, and the multifunctional button cannot cause falling injury.

Claims

1. A multifunctional firefighter life-saving device, characterized in that it comprises a casing (1) with an opening at one end and an end cover (2) covering the opening of the casing (1), wherein the casing (1) A main shaft (3) is fixedly provided, and an escape wheel (4), a rope winding wheel (5), a coil spring (6) and a ratchet wheel (7) are sequentially sleeved on the main shaft (3), and the rope winding wheel (5) ) is fixedly connected with the ratchet wheel (7), and rotates on the main shaft (3), the escapement fork (8) is installed in the casing (1) at the position corresponding to the escape wheel (4), and the rope winding wheel ( 5) One end face close to the escape wheel (4) is provided with a connected centrifugal throwing block (9) and a throwing block spring (10), and the centrifugal throwing block (9) is installed on the rope winding wheel (5) through a pin shaft. ), the pin shaft is located at the eccentric position of the centrifugal throwing block (9), and the throwing block spring (10) is connected with the end of the centrifugal throwing block (9) away from the pin shaft; the escape wheel (4) is close to the rope reel One end face of (5) is provided with a locking tooth (14), and a corresponding locking can be realized between the centrifugal throwing block (9) and the locking tooth (14); the other end face of the rope winding wheel (5) There is an indented concave platform, the coil spring (6) is embedded in the concave platform, the outer ring of the coil spring (6) is fixed with the inner wall of the concave platform, and the inner ring of the coil spring (6) is fixed with the main shaft, so A rope (11) is wound around the rope reel (5), one end of the rope (11) is fixedly connected with the rope reel (5), and the other end of the rope (11) extends out of the casing (1). A pawl (12) is installed in the housing (1) at a position corresponding to the ratchet wheel (7), and the pawl (12) is connected with the pawl spring (15) in the housing (1). There is also a multi-function button (13) extending out of the casing (1).

2. A multifunctional firefighter life-saving device according to claim 1, characterized in that, the pawl (12) is installed in the housing (1) through a pin shaft, and the pin shaft passes through the pawl (12). 12) center; the multi-function button (13) is located above the pawl (12); the pawl spring (15) is connected with the end of the pawl (12) in contact with the ratchet (7), so that the pawl (12) Approach in the direction of the ratchet and press into the ratchet space.

3. A multifunctional firefighter life-saving device according to claim 2, characterized in that, the detent spring (15) is a compression spring or a tension spring.

4. A multifunctional firefighter lifesaving device according to claim 2, wherein one end of the pawl (12) in contact with the ratchet (7) is larger than the other end, and has teeth toward the ratchet (7) A pointed portion protruding in the opposite direction of the pointed portion.

5. A multifunctional firefighter life-saving device according to claim 1, characterized in that, the casing (1) is a hollow cylindrical structure, and the main shaft (3) is located on the axis of the casing (1) superior.