CN209338066U - A kind of steel pipe pole lifting type operating platform - Google Patents

Abstract

The utility model discloses a steel pipe pole lifting type operation platform, which comprises a lifting cross arm. The lifting cross arm includes a guide ring sleeved on the steel pipe pole, and support rods rotatably connected to both sides of the guide ring. The limit block is detachably connected with a fixed bracket on the support rod. The operating platform is set on the fixed bracket. The operating platform is provided with a drive shaft and a friction wheel. One side of the friction wheel is attached to the steel pipe rod. The drive shaft is connected to the friction wheel. A toggle lever and a ratchet pawl mechanism are provided on the drive shaft, and a limit structure is provided between the support rod and the guide ring. When the support rod is in a horizontally opened state, the fixed bracket is connected to the support rod; when the support rod is in In the upward folded state, the fixing bracket is separated from the supporting rod. The utility model can not only ensure the safety of the operator, avoid safety accidents, but also facilitate the maintenance or repair of the circuit breaker and other devices by the operator.

Description

A steel pipe rod lifting operation platform

technical field

The utility model relates to the technical field of power transmission, in particular to an elevating operation platform for steel pipe poles used for erecting power transmission lines.

Background technique

Steel pipe pole is a transmission line carrier with firm structure and simple installation, and is widely used in overhead lines. Existing steel pipe poles usually include a pole body fixed vertically on the ground, a number of cross arms are arranged at intervals on the upper part of the pole body, the transmission line is erected on the cross arms, and a circuit breaker is arranged on the lowermost cross arm . When we need to maintain or repair the circuit breaker on the steel pipe pole, the operator first climbs to a suitable position on the steel pipe pole through the foot buckle, and then uses the insulating pole to operate. Although the operator can use the safety belt when climbing, the safety belt can only prevent the operator from leaning backwards and fall, but cannot avoid the operator's straight-line fall caused by stepping on the air. In particular, the distance between the operator and the steel pipe pole is limited. When it is necessary to operate the isolating switch close to the outer end of the cross arm, the operator's work is very difficult, and his own safety is difficult to be reliably guaranteed.

Utility model content

The purpose of this utility model is to solve the problems of low safety and inconvenient operation when operators maintain devices such as circuit breakers on steel pipe poles. The safety of the operator, avoiding safety accidents, and it is convenient for the operator to maintain or repair the circuit breaker and other devices.

In order to achieve the above object, the utility model adopts the following technical solutions:

An elevating operation platform with a steel pipe rod, comprising a lifting cross arm arranged on the steel pipe rod, the elevating cross arm includes a guide ring sleeved on the steel pipe rod, and support rods arranged laterally on both sides of the guide ring. The lower part of the rod is provided with a limit block that can prevent the guide ring from sliding. A fixed bracket is detachably connected to the support rod. The operating platform is arranged on the fixed bracket. The operating platform is provided with a drive shaft and a friction wheel. One side of the friction wheel is attached to the steel pipe rod, and the drive shaft is connected to the friction wheel through a reduction transmission mechanism with a reduction housing. , the deceleration housing is hinged with a ratchet connected to the ratchet, the support rod is rotatably connected to the guide ring, and a limiting structure that can limit the rotation angle of the support rod is provided between the support rod and the guide ring, so that the support rod has A folded state that rotates upwards and leans against the steel pipe rod, and an open state that is laterally located on one side of the guide ring. When the support rod is in the open state, the fixing bracket is connected to the support rod; when the support rod is in the folded state, the The fixing bracket is separated from the supporting rod.

Since the guide ring in the lifting cross arm is sleeved on the steel pipe rod, when no maintenance or repair is required, we can turn the pawl to disengage the pawl from the ratchet wheel, and at this time the friction wheel can rotate in the opposite direction . The operating platform and the lifting cross arm can slide down to a position close to the ground under the action of gravity until they are limited by the limit block. The fixed bracket is detachably connected to the lifting cross arm, therefore, the operating platform can be removed from the lifting cross arm, and then the limit mechanism is used to make the support rod rotate upwards to the folded state close to the steel pipe rod to reduce the occupation. space and avoid disturbing others. When we need to maintain or repair the circuit breaker on the steel pipe pole, we can turn the support pole down to the open state, and then install the operating platform on the support poles on both sides of the guide ring, so that the two sides of the lifting cross arm Maintain basic gravity balance. Then, the two operators can respectively enter into the operating platforms on their respective sides, and turn the toggle levers on their respective sides respectively. When the toggle levers are turned downward, the drive shaft can be driven to rotate in the forward direction, and the ratchet and ratchet levers can be driven to rotate in the forward direction. The claw and the reduction transmission mechanism drive the friction wheel to rotate forward. At this time, the friction wheel abutting against the steel pipe rod can roll upwards by means of frictional force, and drive the operating platform to move upwards. When the operators on the left and right sides take turns to move, the two operating platforms together with the lifting cross arm can be gradually raised to a suitable height. At this time, the operator can conveniently operate the circuit breakers and other devices on both sides of the steel pipe pole. maintenance or repair, thereby significantly improving safety and convenience. That is to say, at this moment, the left and right operators output power in turn like riding a bicycle. Since the ratchet pawl has the function of one-way transmission of power, the friction wheel cannot reversely rotate during the rising process of the operating platform, thereby avoiding the automatic downward movement of the operating platform. When the maintenance is finished, the operator can hold the toggle lever, and then release the locking of the ratchet to the ratchet. Because the deceleration transmission mechanism has the effect of saving labor, that is to say, the force and torque acting on the toggle lever will be amplified and acted on the friction wheel. On the one hand, the operator can easily lift the operating platform and on the other hand On the one hand, when unlocking the ratchet, the operator only needs to use a small force to keep the friction wheel still, so as to avoid the operation platform from sliding down by itself. When the operator reversely turns the toggle lever, the friction wheel can gradually roll down along the steel pipe rod, and at this time the operating platform can slowly descend to a position close to the ground until it is limited by the limit block. Then, the operator can dismantle the operating platform and turn the support rod upwards to the folded state, thereby avoiding the impact on the surrounding environment and the like. That is to say, the operation platform can be used in common, which is beneficial to reduce the use cost of the steel pipe pole.

Preferably, the operating platform includes a standing platform, and a fence vertically upwardly arranged on the edge of the standing platform, the fence is rotatably connected to the standing platform, and a connecting buckle is provided between the vertical edges of two adjacent fences.

The operating platform of the utility model adopts a splicing structure, and the fence and the standing platform are rotatably connected. In this way, when the connecting buckle connects the adjacent fences together, the fence and the standing platform can be connected into a reliable frame structure, the operator can stand on the standing platform for operation, and the fence can effectively protect the operator's Safety. At the end of maintenance, we can untie the connecting buckle to separate the adjacent fences from each other. At this time, the fence can rotate relative to the standing platform until it is close to the standing platform, which can significantly reduce the storage space of the operating platform.

Preferably, when the support rod is in the open state, the support rod is gradually inclined upward from the inner end connected to the guide ring to the outer end away from the guide ring, and the lower side of the fixed bracket is provided with a The upper sliding groove is provided with rollers abutting against the support bar on the left and right sides and the bottom of the sliding groove.

Since the support rod is gradually inclined upward from the inner end to the outer end, and the fixed bracket is slidably connected to the support rod, the operating platform on the fixed bracket can automatically slide towards the steel pipe rod side under the action of gravity, thereby It prevents the operation platform from sliding out, saves the corresponding fixing mechanism, and facilitates the disassembly of the connection between the operation platform and the support rod. In particular, the operating platform that slides inward makes the friction wheel tightly abut against the steel pipe rod reliably, thereby forming sufficient frictional force between the friction wheel and the steel pipe rod, so that the operation platform can move upwards smoothly along the steel pipe rod.

As a preference, the deceleration transmission mechanism includes a deceleration housing, one end of the drive shaft protruding from the deceleration housing is covered with an energy storage sleeve, and the inner wall of the energy storage sleeve is provided with a ring groove for accommodating the coil spring. A coil spring is arranged in the spring accommodation ring groove, the inner end of the coil spring is connected to the drive shaft, the outer end of the coil spring is connected to the bottom wall of the coil spring accommodation ring groove, and the deceleration housing is close to the energy storage A positioning jack is provided on the side of the sleeve, and a latch that can be inserted into the positioning jack is provided on the energy storage sleeve.

When the operator completes the maintenance and moves the operating platform down, the drive shaft rotates in the opposite direction, and the coil spring at this time is in the state of winding tightly and accumulating energy. When we need to raise the operating platform, the coil spring releases energy, which can assist the operator to rotate the drive shaft to drive the operating platform to rise. That is to say, the coil spring in the utility model can absorb the potential energy released when the operating platform is lowered, thereby reducing the working intensity of the operator when the operating platform is raised. The coil spring has a great amount of expansion and contraction, so it can fully absorb the potential energy and avoid hindering the rotation of the drive shaft.

Therefore, the utility model has the following beneficial effects: it can not only ensure the safety of the operator, avoid safety accidents, but also facilitate the maintenance or repair of the circuit breaker and other devices by the operator.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is a structural schematic diagram when the operating platform is located at the lower part of the steel pipe pole.

Fig. 3 is a structural schematic diagram of the ratchet pawl.

Fig. 4 is a schematic diagram of the connection structure of the fixed bracket and the support rod.

Fig. 5 is a schematic diagram of the connection structure between the toggle lever and the drive shaft.

Fig. 6 is a structural schematic diagram of the reversing rod.

Fig. 7 is a schematic diagram of the connecting structure of the drive shaft and the energy storage sleeve.

In the figure: 1 steel pipe rod 11, cross arm 12, limit block 2, lifting cross arm 21, guide ring 22, support rod 3, operating platform 31, fixed bracket 311, slide groove 32, standing platform 4, drive shaft 41, Friction wheel 42, toggle lever 43, ratchet 44, rotating sleeve 441, friction plane 45, support ring frame 451, sliding through hole 452, positioning pit 46, friction cylinder 5, reduction transmission mechanism 51, reduction housing 511, hinge Shaft 512, fixed pin 513, positioning socket 52, pawl 521, rotating block 522, locking section 523, arc groove 53, slider 54, extension spring 6, reversing rod 61, reversing rod body 62, telescopic rod Cover 63, reset clip spring 7, energy storage sleeve 71, coil spring accommodation ring groove 72, latch 8, coil spring.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a steel pipe pole lifting operation platform, in which at least two cross-arms 11 are arranged at intervals on the upper end of the steel pipe pole 1, the upper cross-arm is equipped with a transmission line, and the two ends of the lowermost cross-arm are installed with circuit breakers. device and the like. Since the general structure of the steel pipe rod belongs to the prior art in this field, it will not be described too much here. Specifically, the utility model includes a lifting cross arm 2 arranged on a steel pipe rod. The lifting cross arm includes a guide ring 21 sleeved on the steel pipe rod, and support rods 22 arranged laterally on both sides of the guide ring. A fixed support 31 is connected to it for disassembly, and an operating platform 3 is arranged on the fixed support. The operator can stand on the operating platform to maintain or repair devices such as circuit breakers on the steel pipe pole.

For the convenience of operation, as shown in Figure 2, a drive shaft 4 and a friction wheel 41 are set on the operating platform, one side of the friction wheel is close to the steel pipe rod, and the drive shaft is connected to the friction wheel through a reduction transmission mechanism 5 with a reduction housing 51. The wheels form a transmission connection, and a toggle lever 42 extending radially is arranged on the drive shaft. When we need to maintain or repair the circuit breaker on the steel pipe pole, two operators can respectively enter into the operating platforms on their respective sides and turn the toggle levers on their respective sides. When the toggle lever on one side is rotated downward, the drive shaft can be driven to rotate forward, and the friction wheel on one side of the drive shaft can be driven to rotate forward through the drive shaft deceleration transmission mechanism. At this time, the friction wheel abutting against the steel pipe rod can rely on friction to roll upwards along the steel pipe rod, and drive the operating platform on one side of itself to move upward. The operating platform can drive the lifting cross arm to move upward through the fixed bracket, and then drive the operating platform on the other side to rise synchronously. When the operators on the left and right sides take turns to move, the two operating platforms together with the lifting cross arm can be gradually raised to a suitable height. At this time, the operator can conveniently operate the circuit breakers and other devices on both sides of the steel pipe pole. maintenance or repair, thereby significantly improving safety and convenience.

When the maintenance or repair work is finished, the operator can turn the lever in the opposite direction, and the friction wheel can gradually roll down along the steel pipe rod, and the operating platform can be slowly lowered to a position close to the ground, and the operator can leave the operation conveniently and safely. platform. Of course, we can fix a limit block on the lower part of the steel pipe rod that can prevent the guide ring from sliding downward, so that the guide ring that moves downward can be limited by the limit block, so that the operating platform can be positioned reliably. In addition, since the fixing bracket is detachably connected to the support pole, we can remove the operation platform from the support pole, so that the operation platform becomes a general device, which is beneficial to reduce the use cost of the steel pipe pole.

It should be noted that, assuming that the total weight of the two operating platforms, fixed brackets, and lifting cross arms is 100 kg, and the weight of the two operators is 150 kg, the required force for lifting the operating platform is 250 kg. We can make the transmission ratio i of the deceleration transmission mechanism equal to 3, and the ratio between the length of the toggle lever and the radius of the friction wheel is 8. It can be seen from the calculation that the force acting on the toggle lever at this time should be greater than 250/24 Kilogram. That is to say, as long as the operator acts on the outer end of the toggle rod with a force greater than 10.5 kg, the operating platform can be smoothly raised to the desired height together with the operator.

In order to avoid the impact of the low-position operating platform on the surrounding environment, we can connect the support rod to the guide ring in rotation, and set a limit bracket on the guide ring against the lower side of the support rod to limit the rotation of the support rod relative to the guide ring Angle, so that the support rod has a folded state where it is turned upwards and leans against the steel pipe rod, and an opened state where it is turned downwards and lies laterally on one side of the guide ring. When we need to move up the operating platform, we can turn the support bar down to the open state, and then connect the fixed bracket to the support bar; when we remove the operating platform from the lifting cross arm, we can turn the support bar up To the folded state, the fixed bracket at this time is separated from the support rod, thereby preventing the operation platform and the support rod from causing adverse effects on the surrounding environment.

In order to prevent the operating platform from sliding down by itself during the ascent process, as shown in Figure 3, we can set a ratchet 43 on the drive shaft, hinge the ratchet 52 on the reduction housing, and the suspended end of the ratchet is lapped on the ratchet, so that The ratchet and the drive shaft can rotate in one direction. That is to say, the drive shaft can drive the friction wheel to rotate in the forward direction, so that the operating platform is gradually moved upwards, but the friction wheel cannot rotate in the opposite direction, thereby preventing the operating platform from moving down by itself. When the maintenance is finished, the operator can hold the toggle lever by hand, and then toggle the pawl outward to release the locking of the pawl to the ratchet. Then slowly turn the toggle lever in reverse to make the operating platform move down smoothly. Because the deceleration transmission mechanism has the effect of saving labor, that is to say, the force and torque acting on the toggle lever will be amplified and acted on the friction wheel. On the one hand, the operator can easily lift the operating platform and on the other On the one hand, when unlocking the ratchet, the operator only needs to use a small force to keep the friction wheel still, so as to avoid the operation platform from sliding down by itself.

Of course, we can set a hinged shaft 511 on the reduction housing, and the ratchet includes a rotating block 521 rotatably connected to the hinged shaft, and locking ends 522 arranged on both sides of the rotating block. When the teeth are engaged, the ratchet can be locked. In addition, we also need to set an arc-shaped groove 523 whose center deviates from the center of the hinge shaft on the end face of the rotating block, set a slidable slider 53 in the arc-shaped groove, and set a fixed pin 512 on the reduction housing. The ratchet is away from the side of ratchet, and connects fixed pin and slide block with an extension spring 54. It can be understood that when the center of the hinge shaft, the center of the slider and the center of the fixed pin are on a straight line, the slider is in an unstable state at this time, and the slider is just in the middle of the arc-shaped chute, and the arc The center of the shaped groove is located on the extension line of the connecting line between the center of the hinge shaft and the center of the fixed pin, and the locking ends on both sides of the pawl leave the ratchet. When we pull the ratchet to one side, the slider slides toward the side of the arc groove, the distance between the slider and the fixed pin gradually decreases, and the tension spring gradually shortens and returns to the locking end on the side of the ratchet. Elastically lapped on the ratchet, thereby forming a reverse lock on the ratchet, at this time the operating platform can move upwards. When we reversely pull the ratchet, the extension spring is stretched, and the slider gradually moves to the other side in the arc groove. When the slider moves through the middle position in the arc-shaped groove, the tension of the tension spring makes the slider automatically slide to the other side of the arc-shaped groove until the locking end on the other side of the pawl elastically overlaps the ratchet, thus A positive lock is formed on the ratchet, and the operating platform can move downward at this time.

As a preferred solution, the operating platform includes a rectangular standing platform 52, a fence 53 vertically arranged at the four edges of the standing platform, the fence and the standing platform are connected by hinge rotation, and the vertical of two adjacent fences A connecting hasp is provided between the edges. When the connecting buckle connects the adjacent standing platforms together, the fence and the standing platform can be connected into a reliable rectangular parallelepiped frame structure, the operator can stand on the standing platform for operation, and the fence can effectively protect the operation safety of the victim. At the end of maintenance, we can untie the connecting buckle to separate the adjacent fences from each other. At this time, the fence can rotate relative to the standing platform until it is close to the standing platform, which can significantly reduce the storage space of the operating platform. Specifically, the connecting hasp includes two upper and lower overlapping sockets arranged on adjacent fence edges, and a lapping pin is inserted into the two overlapping sockets, so that the edges of the two fences are connected together .

As another preferred solution, the support rod is gradually inclined upward from the inner end connected to the guide ring to the outer end away from the guide ring. As shown in Figure 4, the lower side of the fixed bracket is provided with an inverted U-shaped sliding groove 311 that is movably clamped on the support rod, and the left and right sides and the bottom of the sliding groove are respectively provided with rollers that are attached to the support rod. Therefore, the fixed bracket can form rolling friction relative to the support rod. Since the support rod is gradually inclined upward from the inner end to the outer end, and the fixed bracket is slidably connected to the support rod, the operating platform on the fixed bracket can automatically slide towards the steel pipe rod side under the action of gravity, thereby Avoid sliding the operating platform outwards. In particular, the operating platform that slides inward makes the friction wheel closely abut against the steel pipe rod reliably, thereby forming sufficient frictional force between the friction wheel and the steel pipe rod, so that the operation platform can smoothly move upward along the steel pipe rod.

It should be noted that the support bar of the lifting cross arm can be a triangular plate with a high inner end and a lower outer end. Correspondingly, the upper part of the inner side of the support rod is rotatably connected with the guide ring, and the lower part is provided with a roller abutting against the steel pipe rod. The rollers play a supporting role for the support rod, and can always be close to the steel pipe rod during the lifting process of the operation platform, thereby facilitating the stable positioning of the lifting cross arm and the operation platform on the steel pipe rod.

Further, as shown in Figure 5, we can also set a rotating sleeve 44 sleeved on the driving shaft at the inner end of the toggle lever close to the driving shaft, and the inner hole of the rotating sleeve is a regular hexagonal hole, so that the rotating sleeve can Six friction planes 441 uniformly distributed in the circumferential direction are formed on the inner hole, a vertex angle of 120 degrees is formed between two adjacent friction planes, and an annular cavity is formed between the inner hole of the rotating sleeve and the drive shaft. The outer side of the annular cavity is a regular hexagon, and the inner side is a circle. That is to say, the radial size of the annular cavity is the largest at the top corner of the inner hole of the rotating sleeve, and the smallest at the middle position of the friction plane.

In addition, a rotatable ring-shaped support ring frame 45 is set in the annular cavity. The cross section of the support ring frame is rectangular, and six radially penetrating outer peripheral surfaces are set on the inner peripheral surface of the support ring frame. There are rectangular sliding through holes 451, and six sliding through holes are evenly distributed in the circumferential direction of the supporting ring frame, and a movable friction cylinder 46 is arranged in the sliding through holes. An elastically telescopic reversing rod 6 is hinged on the end surface of the rotating sleeve, and a positioning pit 452 is arranged on the outside of the supporting ring frame, and the telescopic inner end of the reversing rod is clamped in the positioning pit, thereby forming a rotation for the supporting ring frame. torque to make the support ring frame rotate, at this time, the inner side of the friction cylinder abuts against the drive shaft, and the outer side abuts against the corresponding friction plane. That is to say, the friction cylinder at this time is positioned in the area between the top corner of the inner hole of the rotating sleeve and the middle position of the friction plane.

When we rotate the rotating sleeve in the forward direction through the toggle rod, the friction cylinder tends to move toward the minimum radial dimension of the annular cavity. At this time, the friction cylinder cannot move. Form an extrusion force and the static friction force formed by the extrusion force. It can be understood that, through reasonable design, we can form a self-locking tangent angle between the friction cylinder, the friction plane and the peripheral surface of the drive shaft. At this time, the greater the torque that the toggle lever acts on the rotating sleeve, the greater the above-mentioned extrusion force, and correspondingly, the greater the static friction force, so that a one-way lock is formed between the toggle lever and the drive shaft to transmit torque . When the rotating sleeve rotates in reverse, the friction cylinder tends to move toward the maximum radial dimension of the annular cavity. Therefore, the friction cylinder at this time moves relative to the rotating sleeve, so that the rotating sleeve can reversely rotate relative to the drive shaft. That is to say, the toggle lever can be rotated in the forward direction to transmit the torque, and then reverse idling, and the operating platform can be gradually raised by the reciprocating rotation of the toggle lever, which avoids continuous forward rotation of the toggle lever and facilitates the operator's operation . When we turn the reversing lever, the reverse lock between the toggle lever and the drive shaft can be changed to positive lock. torque.

Preferably, as shown in Figure 6, the reversing rod includes a reversing rod body 61, the middle part of the reversing rod body is hinged on the end surface of the rotating sleeve, and the inner end of the reversing rod body close to the supporting ring frame is sleeved with a closed-end telescopic Rod sleeve 62, a return compression spring 63 is arranged in the telescopic rod sleeve, one end of the reset compression spring presses the end of the reversing rod body, and the other end presses the bottom of the telescopic rod sleeve, so that the reversing rod can be elastic in the axial direction telescoping. In addition, the end of the inner end of the telescopic rod sleeve is locked in the positioning pit of the support ring frame, and the reversing rod deviates from the center of the support ring frame, so that the reversing rod forms a torque on the support ring frame, and then pushes the support ring frame Rotate so that the friction cylinder is positioned on one side of the top corner in the annular cavity. When we toggle the outer end of the reversing rod body, the supporting ring frame can be rotated, and the telescopic rod sleeve is first retracted and then stretched until the friction cylinder is positioned on the other side of the inner apex of the annular cavity.

Finally, the reduction transmission mechanism of the present invention is a gear transmission mechanism comprising several transmission gears, one of which is set on the drive shaft extending into the reduction housing. As shown in Figure 7, the drive shaft protrudes from the deceleration housing, and the end away from the toggle rod is covered with an energy storage sleeve 7, and a coil spring accommodation ring, 71, is arranged on the inner wall of the energy storage sleeve. A coil spring 8 is arranged in the spring accommodation ring groove, the inner end of the coil spring is connected on the drive shaft, and the outer end of the coil spring is connected on the bottom wall of the coil spring accommodation ring groove. In addition, a positioning socket 513 is provided on the side of the reduction housing close to the energy storage sleeve, and a pin 72 that can be inserted into the positioning socket is provided on the outer wall of the energy storage sleeve.

Before maintenance is needed on devices such as circuit breakers, we can first insert the pin into the positioning hole so that the energy storage sleeve and the deceleration housing are connected as one, and then turn the drive shaft to fully wind the coil spring to form a preset Tight elastic. Then the operating platform is installed on the support rod, and then the operator starts to turn the toggle lever to raise the operating platform. Correspondingly, the coil spring is gradually released to assist the operator to rotate the drive shaft, thereby driving the operating platform to rise. When the operating platform is lowered, the drive shaft rotates in the opposite direction, and the coil spring at this time is gradually wound tightly to store energy. When the operating platform reaches the lower position, the coil spring is fully wound to store energy, so that the operating platform can rise next time.

Of course, we can also set a positioning hook that can hook the end of the toggle rod in the operating platform. When it is necessary to pre-tighten the coil spring, we can first turn the toggle lever so that the coil spring is tightly wound on the drive shaft, and then hook the toggle lever with a positioning hook to prevent the coil spring from releasing itself. Then, we install the operation platform on the support rod, and make the operation platform move up gradually under the assistance of the coil spring. That is to say, the coil spring in the utility model can absorb the potential energy released when the operating platform is lowered, thereby reducing the working intensity of the operator when the operating platform is raised. The coil spring has a great amount of expansion and contraction, so it can fully absorb the potential energy and avoid hindering the rotation of the drive shaft.

Claims (4)

1. a kind of steel pipe pole lifting type operating platform, including the lifting cross-arm being arranged on steel pipe pole, characterized in that the lifting Cross-arm includes the guide ring being set on steel pipe pole, the support rod for being laterally positioned in guide ring two sides, in the lower part of steel pipe pole Equipped with the limited block that guide ring can be prevented to slide, fixed bracket is removably connected on the support rod, operating platform setting exists On fixed bracket, the operating platform is equipped with drive shaft, friction pulley, and the friction pulley side reclines steel pipe pole, the driving Axis is connect by the reduction gearing mechanism with decelerating casing with frictional wheel drive, is equipped with group radially extended on the driving shaft Lever is equipped with ratchet on the driving shaft, and the pawl connecting with ratchet is hinged on decelerating casing, and the support rod and guide ring turn Dynamic connection, the position limiting structure of support rod rotational angle can be limited by being equipped between support rod and guide ring, so that support rod be made to have There is one to be rotated up and the folded state for the steel pipe pole that reclines and one be laterally located within the opening state of guide ring side, When support rod in the open state, fixed bracket is connected on support rod；When support rod is in folded state, the fixation Bracket is mutually separated with support rod.

2. a kind of steel pipe pole lifting type operating platform according to claim 1, characterized in that the operating platform includes station Vertical platform, the fence that standing platform edge is vertically upright set, the fence and standing platform rotation connection, it is two neighboring Connection hasp is equipped between the vertical edge of fence.

3. a kind of steel pipe pole lifting type operating platform according to claim 1, characterized in that when support rod is in open shape When state, the support rod gradually tilts upwards from the inner end of connection guide ring to the outer end far from guide ring, the fixed bracket Downside be equipped with the sliding groove that is movably fastened on support rod, be respectively equipped with patch in the left and right sides of sliding groove and bottom By the idler wheel of support rod.

4. a kind of steel pipe pole lifting type operating platform according to claim 1 or 2 or 3, characterized in that the deceleration transmission Mechanism includes a decelerating casing, and drive shaft stretches out decelerating casing one end and is arranged with energy storage sleeve, in the inner sidewall of energy storage sleeve It is equipped with disc spring and accommodates annular groove, disc spring is equipped in disc spring accommodating annular groove, the inner end of the disc spring connects on the driving shaft, disc spring Outer end be connected to disc spring accommodating annular groove bottom wall on, the decelerating casing close to the side of energy storage sleeve be equipped with positioning jack, Energy storage sleeve is equipped with the bolt that can be inserted into positioning jack.