CN117923282B - Multi-layer driven lifting device - Google Patents

Abstract

The invention discloses a multi-layer driven lifting device, which relates to the field of lifts and comprises a support frame, wherein the support frame is vertically and slidably connected with a first bearing box, the support frame is provided with a driving mechanism for driving the first bearing box to move, the lower end part of the first bearing box is fixedly connected with a first bottom plate, one side of the first bearing box is provided with a first inlet and a first outlet, the support frame is also longitudinally and slidably connected with a second bearing box, the upper end part of the second bearing box is provided with an opening matched with the first bearing box, the first bearing box enters and exits the second bearing box through the opening, the lower end part of the second bearing box is fixedly provided with a second bottom plate, the second bottom plate is opposite to the first bottom plate, one side of the second bearing box is provided with a second inlet and a second outlet matched with the first inlet and the second outlet, the upper end part of the second bearing box is fixedly connected with a limiting plate, the first bottom plate is fixedly connected with a lifting block along the circumferential direction, and the lifting block is positioned between the second bottom plate and the limiting plate. The invention has the effect of ensuring the movement stability of the lifting device while improving the bearing capacity.

Description

Multi-layer driven lifting device

Technical Field

The invention relates to the field of elevators, in particular to a multi-layer driven lifting device.

Background

The elevator is a common mechanical device for transporting people and objects in a vertical direction, and is widely applied to various high-altitude operations, and mainly comprises a main body fixedly arranged along a vertical direction and an elevating platform moving along a length direction of the main body, wherein the main body is provided with a driving device for driving the elevating platform to move.

The related art can refer to the chinese patent with publication number CN214495329U and discloses a lifting device for building, including the lifting support, lifting support's both sides equal fixedly connected with lift drive, lifting drive's bottom fixedly connected with bears the case, bear the equal fixedly connected with three hinges of front side of case, the one end fixedly connected with guard plate of bearing the case is kept away from to three hinges, bear the equal fixedly connected with fixed block in both sides of case front side, the equal fixedly connected with stopper in both sides of guard plate, the inside swing joint of fixed block blocks has blocking mechanism, blocking mechanism includes the movable rod, the rear side fixedly connected with pivot of movable rod. The device is through lifting support, lift drive, bear case, hinge, guard plate, fixed block, stopper, spacing groove, block mechanism, supporting shoe, torsional spring and through-hole's cooperation use, solved current bear case and not possess the too trouble problem of protection and in the in-process of transportation it.

Aiming at the related technology, the lifting device conveys people or articles through the bearing box, but the volume of the bearing box is limited, if the transportation capacity of the bearing box is to be lifted in the range of the lifting support and the lifting driving bearing capacity, the loading area in the bearing box needs to be enlarged, and after the volume of the bearing box is increased, the requirement for working space is also increased; and when the operation is carried out in windy environment, after the bearing area of the bearing box along the transverse direction is increased, the bearing box is more easily influenced by wind, so that a lifting device which can improve the bearing capacity and ensure the movement stability is needed.

Disclosure of Invention

In order to ensure the movement stability of the lifting device while improving the bearing capacity, the application provides a multi-layer driven lifting device.

The application provides a multi-layer driven lifting device, which adopts the following technical scheme:

The utility model provides a multilayer driven elevating gear, includes the support frame, the support frame is followed vertical sliding connection and is born the weight of the railway carriage or compartment one, the support frame is equipped with the actuating mechanism who is used for driving to bear the weight of railway carriage or compartment one and remove, the end fixedly connected with bottom plate one bears railway carriage or compartment one, and one side that bears railway carriage or compartment one is equipped with imports and exports one, the support frame is still along length direction sliding connection with bear railway carriage or compartment two, bear railway carriage or compartment two upper end offered the uncovered with bear railway carriage or compartment one adaptation, bear railway carriage or compartment one and come into and go out and bear railway carriage or compartment two by uncovered, bear railway carriage or compartment two lower extreme fixedly provided with bottom plate two, bottom plate two just to bottom plate one, bear railway carriage or compartment two one side be equipped with imports and exports two of one intercommunication, bear railway carriage or compartment two upper end fixedly connected with limiting plate, bottom plate one along circumference fixedly connected with hoisting block, the hoisting block is located between bottom plate two and the limiting plate.

Through adopting above-mentioned technical scheme, the support frame is attached to high-rise building or facility along vertical, and under the initial state, bear the railway carriage or compartment I and be located and bear railway carriage or compartment II, constructor passes import and export two in proper order and import and export one and get into and bear railway carriage or compartment I, bear railway carriage or compartment I through bottom plate one to constructor bear now. The first bearing carriage is driven to move along the supporting frame through the driving mechanism, and the first bearing carriage moves through the first bottom plate to drive the lifting block to move when moving, so that the lifting block is abutted against the limiting plate, and at the moment, another batch of constructors enter the second bearing carriage along the second inlet and outlet, and the second bearing carriage bears the constructors through the second bottom plate. At this time, the first bearing carriage continuously moves, and the second bearing carriage is driven to synchronously move through the lifting block and the limiting plate. Under the condition that the support frame and the driving mechanism work normally, the number of constructors for each transportation is increased by arranging the first bearing carriage and the second bearing carriage, the bearing capacity is improved, the constructors of different work types are transported to different heights conveniently, the first bearing carriage and the second bearing carriage are arranged vertically, and the gravity center is close to the support frame during movement, so that the wind resistance is improved, and the transportation stability is improved.

Optionally, actuating mechanism includes movable block, haulage rope and traction motor, and the movable block is along vertical and support frame sliding connection, bears first and movable block fixed connection of railway carriage or compartment, and the movable block upper end is equipped with the supporting wheel, and traction motor is located the supporting wheel top and with movable block fixed connection, and traction motor output shaft coaxial fixed with accomodates the wheel, and the one end fixed connection of haulage rope is in the support frame upper end, and the other end is around locating the supporting wheel and accomodate a round excircle fixed connection.

Through adopting above-mentioned technical scheme, under the fixed action of support frame, take in the wheel rotation when traction motor drive for take in the wheel drive haulage rope rolling, under the connecting action of supporting wheel, drive the movable block and remove along the support frame when the haulage rope rolling, and then drive through the movable block and bear the weight of the first removal of railway carriage or compartment.

Optionally, the support frame is along a plurality of back shafts of equal fixedly connected with in width direction's both sides, the movable block lower extreme is equipped with the backup pad, tip vertical fixation has the montant in the backup pad, the montant passes movable block and fixedly connected with rotating turret, the supporting wheel rotates with the rotating turret to be connected, the movable block lower extreme is along two locating levers of horizontal sliding connection, the distance between two arbitrary adjacent back shafts all is greater than the locating lever diameter, the backup pad articulates there is the push pedal with the locating lever one-to-one, the one end that the backup pad was kept away from to the push pedal articulates with corresponding locating lever, tip fixedly connected with holding ring under the movable block, be equipped with thrust spring in the holding ring, thrust spring is used for driving the backup pad and keeps away from the movable block.

Through adopting above-mentioned technical scheme, under the initial state, the backup pad is in the position of keeping away from the movable block under thrust spring's promotion effect, and the locating lever inserts between two arbitrary adjacent back shafts this moment, when the haulage rope tightens up, applys along vertical pulling force to the supporting wheel for the supporting wheel drives rotating turret and montant and removes, drives backup pad and supporting ring conflict when the montant removes, thrust spring compresses this moment. When the supporting disc moves, the two pushing plates are driven to move, so that the pushing plates drive the positioning rods to move out from between the two supporting shafts, and the first bearing carriage moves at the moment. When the haulage rope breaks, when the condition that the carriage falls takes place, the supporting disk keeps away from the supporting ring under thrust spring's effect, and two locating levers are close to the back shaft under the effect of push pedal this moment, when the locating lever inserts in the space between two adjacent back shafts, support the movable block after the locating lever contradicts with the back shaft under the effect of gravity, and then prevent the trend that carriage one and carriage two fall, be favorable to improving the security of carriage one and carriage two when removing.

Optionally, tip sliding connection has the supporting shoe under the movable block, the support frame is along vertical fixedly connected with and the reducing plate that the supporting shoe corresponds, one side fixedly connected with a plurality of triangular blocks that the reducing plate is close to the supporting shoe, be equipped with the movable spring between supporting shoe and the movable block, the movable spring is used for promoting the supporting shoe to be close to the reducing plate, the one end that the supporting shoe is close to corresponding reducing plate is equipped with the reducing shoe, a plurality of triangular mouths with triangular block adaptation are offered to one side that the reducing shoe is close to the reducing plate, the guide way has been offered to one side that the supporting shoe is close to the reducing plate, the guide way slope sets up to the direction slope that keeps away from the supporting shoe, reducing shoe fixedly connected with and the slider of guide way adaptation, the slider is located the guide way, and along guide way length direction and supporting shoe sliding connection, the end fixedly connected with rectangular plate under the supporting shoe, locating lever fixedly connected with and the riser of rectangular plate adaptation, the riser is located one side that the board is close to the reducing plate.

Through adopting above-mentioned technical scheme, when the locating lever kept away from the back shaft, the riser was contradicted with the rectangular plate, and the movable spring was in compression state this moment, and deceleration block and deceleration plate are not contradicted each other. When the haulage rope breaks, the locating lever is close to the back shaft, riser and rectangular plate separation, the supporting shoe drives the deceleration piece under the effect of travelling spring and is close to the deceleration plate this moment, after the one end that the triangular mouth was seted up to the deceleration piece contradicts with the triangular piece, the deceleration piece receives the resistance opposite with the removal direction, the deceleration piece drives the slider and removes along the guide way this moment, and then make take place the skew between deceleration piece and the supporting shoe, deceleration piece and the cooperation of deceleration plate reduce the speed of moving the piece this moment, be favorable to improving locating lever and back shaft complex stability, reduce because bear the carriage and fall the too fast probability that leads to the locating shaft unable to stretch into the back shaft clearance of speed.

Optionally, be equipped with the buffer block in bearing the carriage II, the buffer block is located and bears carriage II upper end, and along vertical and bearing carriage II sliding connection, be equipped with a plurality of groups of buffers along vertical between buffer block and the bearing carriage II, one side that the buffer block is close to bearing carriage I is equipped with a plurality of dogs, the buffer block has been seted up and has been moved the chamber with the dog adaptation, it is equipped with the stopper to remove the intracavity, stopper along transversely with buffer block sliding connection, be equipped with elastic component one between stopper and the buffer block, elastic component one is used for promoting the stopper to bear carriage I and is close to, the dog is located and moves the intracavity and rotate with the stopper to be connected, the dog upper end is equipped with the plane, and the dog lower extreme portion is equipped with the arc face with the plane intersection, be equipped with the torsional spring between dog and the stopper, under the torsional spring normal state, the plane and the buffer block butt of dog, the buffer block has the locating plate along horizontal sliding connection, the locating plate is located the dog upper end and is contradicted with the dog, the mouth of stepping down with the dog adaptation is seted up to the locating plate.

Through adopting above-mentioned technical scheme, under the initial condition, the mouth of stepping down is crisscross with the dog setting, and the plane of dog is contradicted with the locating plate this moment, and the rotation of baffle receives the restriction. The first bottom plate and the second bottom plate are separated and then move towards the limiting plate, after the lifting block is abutted against the arc-shaped surface of the stop block, the stop block is pushed along the arc-shaped surface, the stop block drives the stop block to move along the moving cavity, at the moment, the stop block enters the accommodating cavity, after the lifting block is abutted against the limiting plate, the moving block resets under the action of the first elastic piece, at the moment, the stop block extends out of the moving cavity, and the plane of the stop block is abutted against the lower end face of the bottom plate. When the first bearing carriage and the second bearing carriage move towards the ground, and after the second bearing carriage collides with the ground and is static, if the first bearing carriage continuously moves under the action of inertia, the buffer block supports the lifting block, at the moment, the buffer block buffers the first bearing carriage through the buffer and prevents the first bearing carriage from continuously moving, after all people in the second bearing carriage leave, the positioning plate is moved, the yielding port is opposite to the corresponding stop block, at the moment, the stop block is released from rotating, the first bearing carriage continuously moves downwards, and people in the first bearing carriage are conveniently moved in and out.

Optionally, be equipped with elastic component two between locating plate and the buffer block, under the elastic component two normal condition, the mouth of stepping down is crisscross with the dog setting, one side fixedly connected with movable plate that the locating plate deviates from and bears railway carriage or compartment one, the buffer block has been seted up with the movable groove of movable plate adaptation, bear railway carriage or compartment two along horizontal sliding connection have with import and export the railway carriage or compartment door of two adaptations, railway carriage or compartment door upper end fixedly connected with roof, bear railway carriage or compartment two upper end along horizontal sliding connection have the regulating block, the regulating block vertical fixation has the straight board, the straight board stretches into in the movable groove and contradicts with the movable plate, the roof is located the straight board dorsad and is moved one side of board.

Through adopting above-mentioned technical scheme, when the railway carriage or compartment door was opened, it is close to drive the roof to the straight board, before the railway carriage or compartment door was opened to a certain extent, roof and straight board are mutually inconsistent, when bear the railway carriage or compartment person in the railway carriage or compartment second and leave the back completely, continue to remove the railway carriage or compartment door for railway carriage or compartment door drive roof and straight board conflict. At the moment, the straight plate drives the adjusting block to move along the length direction, and the moving plate drives the positioning plate to move, so that after the yielding port of the positioning plate is opposite to the corresponding stop block, the limit on the stop block is relieved, and the positioning plate is convenient to move.

Optionally, the equal fixedly connected with bracing piece in both sides of bearing railway carriage or compartment one, tip fixedly connected with installation piece under the bracing piece, the installation piece is located between limiting plate and the bottom plate two, bearing railway carriage or compartment two fixedly connected with the deflector of installation piece adaptation, the opening with the deflector adaptation has been seted up to the installation piece, the deflector passes from the opening, the installation piece rotates and is connected with the pulley, pulley and deflector roll connection, equal fixedly connected with blotter of tip under installation piece upper end and.

Through adopting above-mentioned technical scheme, drive bracing piece and installation piece and remove when bearing the railway carriage or compartment one and remove, the installation piece passes through the opening and cooperates with the deflector, and then improves and bear railway carriage or compartment one and bear the stability when railway carriage or compartment two take place relative movement, and the pulley is favorable to reducing the frictional force between installation piece and the deflector, and the blotter is favorable to slowing down the collision that takes place between installation piece and the carriage or compartment outer wall.

Optionally, the first bottom plate is opened along vertical and is had the mouth of climbing, and the mouth department of climbing articulates there is the telescopic link, and the telescopic link includes the sleeve pipe of a plurality of sections head and tail sliding connection in proper order, and all sleeve pipes are all perpendicular to be fixed with the horizontal pole with the mouth of climbing adaptation, and the bottom plate tip has the diaphragm along horizontal sliding connection.

Through adopting above-mentioned technical scheme, under the initial state, all sleeve pipes all shrink and set up, and the telescopic link is whole to be located the mouth that climbs this moment, and bottom plate one carries out spacingly to horizontal pole and telescopic link through the diaphragm. After the transverse plate is moved, the telescopic rods are moved, so that all sleeves sequentially extend out to the carrying carriage II, and at the moment, personnel in the carrying carriage I and the carrying carriage II move along the transverse rods and all the sleeves, so that constructors can conveniently go back and forth between the carrying carriage I and the carrying carriage II.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The support frame is vertically attached to a high-rise building or facility, in an initial state, the first bearing carriage is positioned in the second bearing carriage, constructors sequentially penetrate through the second inlet and the second outlet and enter the first bearing carriage, and at the moment, the first bearing carriage bears the load of the constructors through the first bottom plate. The first bearing carriage is driven to move along the supporting frame through the driving mechanism, and the first bearing carriage moves through the first bottom plate to drive the lifting block to move when moving, so that the lifting block is abutted against the limiting plate, and at the moment, another batch of constructors enter the second bearing carriage along the second inlet and outlet, and the second bearing carriage bears the constructors through the second bottom plate. At this time, the first bearing carriage continuously moves, and the second bearing carriage is driven to synchronously move through the lifting block and the limiting plate. Under the condition that the support frame and the driving mechanism work normally, the number of constructors transported each time is increased by arranging the first bearing carriage and the second bearing carriage, the bearing capacity is improved, constructors of different work types are transported to different heights conveniently, the first bearing carriage and the second bearing carriage are arranged vertically, and the gravity center is close to the support frame during movement, so that the wind resistance is improved, and the transportation stability is improved;

2. under the initial condition, the backup pad is in the position of keeping away from the movable block under thrust spring's promotion effect, and the locating lever inserts between two arbitrary adjacent back shafts this moment, when the haulage rope tightens up, applys along vertical pulling force to the supporting wheel for the supporting wheel drives rotating turret and montant and removes, drives backup pad and supporting ring conflict when the montant removes, thrust spring compresses this moment. When the supporting disc moves, the two pushing plates are driven to move, so that the pushing plates drive the positioning rods to move out from between the two supporting shafts, and the first bearing carriage moves at the moment. When the traction rope is broken and the bearing carriage falls, the supporting disc is far away from the supporting ring under the action of the thrust spring, at the moment, the two positioning rods are close to the supporting shafts under the action of the push plate, when the positioning rods are inserted into gaps between the two adjacent supporting shafts, under the action of gravity, the positioning rods support the moving block after abutting against the supporting shafts, so that the falling trend of the bearing carriage I and the bearing carriage II is prevented, and the safety of the bearing carriage I and the bearing carriage II in moving is improved;

3. When the locating rod is far away from the supporting shaft, the vertical plate is in contact with the rectangular plate, the movable spring is in a compressed state, and the speed reducing block is not in contact with the speed reducing plate. When the haulage rope breaks, the locating lever is close to the back shaft, riser and rectangular plate separation, the supporting shoe drives the deceleration piece under the effect of travelling spring and is close to the deceleration plate this moment, after the one end that the triangular mouth was seted up to the deceleration piece contradicts with the triangular piece, the deceleration piece receives the resistance opposite with the removal direction, the deceleration piece drives the slider and removes along the guide way this moment, and then make take place the skew between deceleration piece and the supporting shoe, deceleration piece and the cooperation of deceleration plate reduce the speed of moving the piece this moment, be favorable to improving locating lever and back shaft complex stability, reduce because bear the carriage and fall the too fast probability that leads to the locating shaft unable to stretch into the back shaft clearance of speed.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the embodiment.

Fig. 2 is a schematic view intended to highlight the connection of the load-bearing compartment to the supporting frame.

Fig. 3 is a schematic view intended to highlight the structure of the driving mechanism.

Fig. 4 is a schematic view intended to highlight a structure of the base plate.

Fig. 5 is a schematic view intended to highlight the connection of the stop to the buffer block.

Fig. 6 is a schematic view intended to highlight the positions of the moving plate and the top plate.

Fig. 7 is an enlarged schematic view of the portion a in fig. 4.

Fig. 8 is a schematic view intended to highlight the connection of the support block with the deceleration block.

Fig. 9 is an enlarged schematic view of a portion B in fig. 3.

Reference numerals illustrate: 1. a support frame; 11. a support shaft; 12. a speed reducing plate; 121. triangular blocks; 2. carrying a first carriage; 21. a first bottom plate; 211. climbing the mouth; 312. a cross plate; 22. an inlet and an outlet; 23. a lifting block; 24. a support rod; 241. a mounting block; 242. an opening; 243. a pulley; 244. a cushion pad; 25. a telescopic rod; 251. a sleeve; 252. a cross bar; 3. a second bearing carriage; 31. a second base plate; 32. a second inlet and outlet; 33. a limiting plate; 34. a buffer block; 341. a moving chamber; 342. a limiting block; 343. a stop block; 344. an elastic piece I; 345. a torsion spring; 35. a buffer; 36. a positioning plate; 361. a yielding port; 362. an elastic piece II; 363. a moving plate; 364. a moving groove; 37. an adjusting block; 371. a straight plate; 38. a compartment door; 381. a top plate; 39. a guide plate; 4. a driving mechanism; 41. a moving block; 411. a support ring; 412. a thrust spring; 42. a traction rope; 43. a traction motor; 431. a storage wheel; 44. a support wheel; 45. a support plate; 451. a vertical rod; 452. a rotating frame; 453. a push plate; 454. a positioning rod; 455. a riser; 46. a support block; 461. a guide groove; 462. a rectangular plate; 463. a moving spring; 47. a deceleration block; 471. a slide block; 472. triangular mouth.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses a multi-layer driven lifting device.

Examples:

Referring to fig. 1 and 2, a multi-deck driven lifting device includes a supporting frame 1, where the supporting frame 1 is vertically disposed in a working state and attached to an outer side of a high-rise building or a bridge facility. The support frame 1 is connected with a first bearing carriage 2 in a sliding manner along the length direction of the support frame, the lower end part of the first bearing carriage 2 is fixedly connected with a first bottom plate 21, the upper end part of the first bearing carriage is fixedly provided with a sealing plate, and the sealing plate and the first bottom plate 21 are driven to move when the first bearing carriage 2 moves.

Referring to fig. 2 and 3, the support frame 1 is provided with a driving mechanism 4, the driving mechanism 4 comprises a moving block 41, a traction rope 42 and a traction motor 43, the support frame 1 is fixed with a guide rail along the length direction, the moving block 41 is slidably connected with the guide rail along the length direction of the guide rail, the support frame 1 limits the moving block 41 through the guide rail, and then the falling probability of a limiting block 342 from the support frame 1 is reduced. The traction motor 43 is mounted at the upper end of the moving block 41, and the traction motor 43 is driven to move when the moving block 41 moves.

Referring to fig. 3 and 4, a support ring 411 is fixedly connected to a lower end portion of the moving block 41, a support plate 45 is provided at a side of the support ring 411 away from the moving block 41, a vertical rod 451 is vertically fixed to an upper end portion of the support plate 45, and the vertical rod 451 passes through the moving block 41 and is fixed with a rotating frame 452. The support wheel 44 is located at the upper end of the turret 452 and is rotatably coupled to the turret 452. The supporting ring 411 is internally provided with a thrust spring 412, one end of the thrust spring 412 is fixedly connected with the supporting plate 45, the other end of the thrust spring 412 is fixedly connected with the moving block 41, when the thrust spring 412 is in a natural state, the supporting plate 45 is located at a position far away from the supporting ring 411, and at the moment, the lower end part of the rotating frame 452 is abutted against the upper end part of the moving block 41.

Referring to fig. 3 and 4, the output end of the traction motor 43 is fixedly connected with a storage wheel 431, the axis of the storage wheel 431 is parallel to the axis of the supporting wheel 44, and an operator drives the storage wheel 431 to rotate through the traction motor 43. One end of the hauling cable 42 is fixedly connected with the upper end of the support frame 1 (refer to fig. 2), and the other end is wound around between the support wheel 44 and the rotating frame 452 and is fixedly connected with the containing wheel 431. The traction motor 43 is located at one side of the supporting wheel 44 far away from the moving block 41, and when the output end of the traction motor 43 drives the storage wheel 431 to rotate, the storage wheel 431 winds the traction rope 42, and the traction rope 42 applies a pulling force along the supporting frame 1 to the supporting wheel 44. In other embodiments, the traction motor 43 may be mounted on the upper end of the support frame 1.

Referring to fig. 3 and 4, when the supporting wheel 44 receives a tensile force in a direction away from the moving block 41 and the tensile force is greater than the elastic force of the thrust spring 412, the supporting wheel 44 drives the supporting plate 45 to move through the rotating frame 452 and the vertical rod 451, and at this time, the supporting plate 45 approaches the supporting ring 411 and collides with the supporting ring 411, and the thrust spring 412 is gradually compressed during the movement of the supporting plate 45. It should be noted that the weight of the first load bearing compartment 2 in the empty state is greater than the elastic force of the thrust spring 412. When the supporting plate 45 abuts against the supporting ring 411, a pushing force is applied to the supporting ring 411 and the moving block 41, so as to drive the moving block 41 to lift along the length direction of the guide rail. The moving block 41 is fixedly connected with the sealing plate of the first bearing box 2, and when the moving block 41 moves, the first bearing box 2 is driven to move synchronously.

Referring to fig. 1 and 2, the support frame 1 is further slidably connected with a second bearing box 3 along a vertical direction, a second bottom plate 31 is arranged at the lower end portion of the second bearing box 3, the first bottom plate 21 is arranged in parallel with the second bottom plate 31, an opening adapted to the first bearing box 2 is formed at the upper end portion of the second bearing box 3, the first bearing box 2 is located in the second bearing box 3 in an initial state, and the first bottom plate 21 is in contact with the second bottom plate 31. The first bearing carriage 2 is provided with an inlet and an outlet 22, the second bearing carriage 3 is provided with an inlet and an outlet 32 corresponding to the inlet and the outlet 22, and constructors enter the first bearing carriage 2 through the inlet and the outlet 32 and the inlet and the outlet 22 in sequence. The first bottom plate 21 is fixed with a lifting block 23 along the circumferential direction, and the lifting block 23 moves when the lifting block 23 moves.

Referring to fig. 1 and 2, the second carrying carriage 3 is slidably connected with a carriage door 38 corresponding to the second inlet 32 and the second outlet 32 in the width direction, the first carrying carriage 2 is provided with a sealing door corresponding to the first inlet 22, when a part of constructors enter the first carrying carriage 2, the sealing door is closed, and the first carrying carriage 2 is driven to vertically lift by a traction motor 43, at this time, the first carrying carriage 2 is moved out of the second carrying carriage 3 along the opening, and the first bottom plate 21 is driven to be far away from the second bottom plate 31 when the first carrying carriage 2 moves.

Referring to fig. 1 and 4, support rods 24 are respectively arranged on two sides of the first bearing carriage 2 along the width direction, the two support rods 24 are vertically arranged, the upper end parts of the support rods 24 are fixedly connected with a sealing plate, and the support rods 24 are driven to move when the first bearing carriage 2 moves. One end of the supporting rod 24, which is far away from the sealing plate, is fixedly connected with a mounting block 241, the mounting block 241 is driven to move when the supporting rod 24 moves, guide plates 39 are fixed on two sides of the carrying box II 3, the guide plates 39 are in one-to-one correspondence with the mounting blocks 241, the mounting blocks 241 are vertically provided with openings 242, and the guide plates 39 penetrate through the mounting blocks 241 along the openings 242.

Referring to fig. 1 and 4, the mounting block 241 is rotatably coupled with two pulleys 243, both pulleys 243 are positioned in the opening 242, and both pulleys 243 are in rolling connection with the guide plate 39 when the mounting block 241 moves along the guide plate 39. The mounting block 241 is matched with the guide plate 39, so that stability of the first bearing carriage 2 and the second bearing carriage 3 in relative movement is improved.

Referring to fig. 1 and 4, the pulley 243 is advantageous in reducing friction between the mounting block 241 and the guide plate 39, thereby reducing wear when the mounting block 241 is moved. Bearing box two 3 upper end fixedly connected with limiting plate 33, installation piece 241 are located between limiting plate 33 and bottom plate two 31, and the equal fixedly connected with blotter 244 of upper end and the lower tip of installation piece 241, and blotter 244 is favorable to slowing down the rigidity collision between installation piece 241 and bottom plate two 31, installation piece 241 and the limiting plate 33, and then prolongs the life of installation piece 241.

Referring to fig. 1 and 5, a buffer block 34 is arranged in the second bearing carriage 3, the buffer block 34 is located above the carriage door 38, and the second bearing carriage 3 is provided with a groove matched with the buffer block 34. The buffer block 34 is positioned in the groove and is vertically and slidably connected with the second bearing box 3. The lower end of the buffer block 34 is also provided with a plurality of buffers 35, all the buffers 35 are vertically arranged, one end of each buffer 35 is fixedly connected with the buffer block 34, and the other end of each buffer 35 is fixedly connected with the carrying carriage II 3. The buffer 35 is used for buffering the buffer block 34 moving vertically, and the buffer 35 is of the prior art, so the description is omitted.

Referring to fig. 1 and 5, a plurality of moving cavities 341 are provided on one side of the buffer block 34 near the bearing compartment one 2, a stop block 343 is provided in all moving cavities 341, two limiting blocks 342 are further provided in the moving cavities 341, and the stop block 343 is located between the two limiting blocks 342 and is rotationally connected with the two limiting blocks 342. The buffer block 34 is provided with a transverse groove communicated with the moving cavity 341, and the limiting block 342 is positioned in the transverse groove and moves along the transverse groove towards the direction approaching or separating from the first bearing carriage 2. An elastic member one 344 is arranged between the limiting block 342 and the buffer block 34, the elastic member one 344 is a spring or a rubber block, in this embodiment, the elastic member one 344 is a spring, one end of the spring is fixedly connected with the limiting block 342, and the other end of the spring is fixedly connected with the buffer block 34. The first elastic member 344 applies a pushing force to the stopper 342 toward the first carriage 2.

Referring to fig. 1 and 5, under the action of the first elastic member 344, the limiting block 342 is located near the first carriage 2, and at this time, one end of the stop 343 extends to the outside of the moving cavity 341. The upper end of the stop block 343 is provided with a plane, the buffer block 34 is connected with a positioning plate 36 in a sliding manner along the length direction, and the lower end surface of the positioning plate 36 is attached to the plane. Further, a torsion spring 345 is disposed between the stop 343 and the limiting block 342, one end of the torsion spring 345 is connected with the stop 343, the other end is connected with the limiting block 342, and in a natural state of the torsion spring 345, the plane is parallel to the lower end face of the positioning plate 36.

Referring to fig. 1 and 5, the positioning plate 36 is provided with a plurality of relief openings 361 corresponding to the stoppers 343 one by one along the length direction. And a second elastic member 362 is further arranged between the positioning plate 36 and the buffer block 34, and similarly, the second elastic member 362 is a spring, one end of the spring is fixedly connected with the positioning plate 36, the other end of the spring is fixedly connected with the buffer block 34, and under the natural state of the second elastic member 362, the yielding ports 361 and the stop blocks 343 are arranged in a staggered manner. The end of the stop 343 near the first bearing carriage 2 is also provided with an arc surface, the arc surface is bent from bottom to top in the direction near the first bearing carriage 2, and the plane is intersected with the arc surface.

Referring to fig. 1 and 5, when the first carriage 2 drives the lifting block 23 to approach the arc surface and collide with the arc surface, the stop block 343 is pushed along the arc surface in a direction away from the first carriage 2, and at this time, the stop block 343 drives the limiting block 342 to move and the first elastic member 344 is compressed. When the upper end surface of the lifting block 23 abuts against the lower end surface of the limiting plate 33, the stop block 343 is separated from the lifting block 23, and the stop block 342 drives the stop block 343 to reset under the action of the first elastic member 344, so that the plane of the stop block 343 is opposite to the lower end surface of the lifting block 23.

Referring to fig. 5 and 6, a moving slot 364 is formed at an end of the buffer block 34 facing away from the first carriage 2, and a moving plate 363 is fixed to the positioning plate 36, and the moving plate 363 passes through the moving slot 364 and is slidably connected with the buffer block 34 along a length direction of the moving slot 364. The upper end of the carriage door 38 is fixedly connected with a top plate 381, the top plate 381 is driven to move when the carriage door 38 is opened and closed, the carriage II 3 is slidably connected with an adjusting block 37 along the width direction, one end of the adjusting block 37 is vertically fixed with a straight plate 371, and the straight plate 371 penetrates through the carriage II 3 and is slidably connected with the carriage II 3. The straight plate 371 is located between the top plate 381 and the moving plate 363, and one end of the straight plate 371 extends into the moving slot 364 to abut against the moving plate 363.

Referring to fig. 1 and 2, when the lifting block 23 is located between the stop 343 and the limiting plate 33, the rest of the constructors sequentially pass through the second inlet and outlet 32 and enter the second carrying compartment 3. When the traction motor 43 continues to drive the first bearing carriage 2 to move, the first bearing carriage 2 drives the second bearing carriage 3 to move through the cooperation of the lifting block 23 and the limiting plate 33, the first bearing carriage 2 and the second bearing carriage 3 simultaneously convey constructors, so that the transportation quantity is increased, the transportation capacity is enhanced, the first bearing carriage 2 and the second bearing carriage 3 are arranged along the length direction of the support frame 1, the gravity centers of the first bearing carriage 2 and the second bearing carriage 3 are close to the support frame 1, the probability that the first bearing carriage 2 and the second bearing carriage 3 are affected by external factors to shake when the constructors are transported is reduced, and the movement stability of the first bearing carriage 2 and the second bearing carriage 3 is improved.

Referring to fig. 4 and 7, a climbing opening 211 is vertically formed in the first bottom plate 21, a telescopic rod 25 is further arranged on the first bottom plate 21, the telescopic rod 25 comprises a plurality of sections of sleeves 251 which are sequentially connected in a sliding mode in a head-to-tail mode, cross rods 252 are vertically fixed to all the sleeves 251, and the cross rods 252 are driven to move when the sleeves 251 move. One sleeve 251 positioned at the end is hinged with the side wall of the climbing opening 211, all sleeves 251 are accommodated and arranged in the initial state, at the moment, the sleeve 251 and the cross rod 252 are positioned in the climbing opening 211, the lower end part of the first bottom plate 21 is connected with the cross plate 312 in a transverse sliding manner, the sleeve 251 and the cross rod 252 are positioned at the upper end part of the cross plate 312, and at the moment, the cross plate 252 is limited by the cross plate 312.

Referring to fig. 4 and 7, when a constructor is required to move between the first carriage 2 and the second carriage 3, the transverse plate 312 is moved to separate the transverse plate 312 from the transverse rod 252, the telescopic rod 25 is rotated to move all the sleeves 251 out of the climbing opening 211, the sleeves 251 are extended along the length direction, and at this time, the constructor in the first carriage 2 and the second carriage 3 moves with the transverse rod 252 through the sleeves 251, so that the constructor is convenient when the constructor moves back and forth between the first carriage 2 and the second carriage 3.

Referring to fig. 2 and 4, when the constructor completes the construction and takes the first carriage 2 and the second carriage 3 again, the storage wheel 431 is driven to unwind by the traction motor 43, and the first carriage 2 and the second carriage 3 move to the ground under the action of gravity. When the lower end of the bottom plate two 31 contacts with the supporting plane, the carrying carriage two 3 stops moving, and if the carrying carriage two 2 is subject to gravity and has a tendency of moving into the carrying carriage two 3, the buffer block 34 supports the lifting block 23 through the stop block 343, and the buffer block 34 buffers the carrying carriage two 2 through the buffer 35 and prevents the carrying carriage two 2 from moving, so that the safety of constructors in the carrying carriage two 3 is improved.

Referring to fig. 2 and 6, when the door 38 is opened, the top plate 381 is driven to move, before the constructors in the second carriage 3 move out completely, the top plate 381 and the straight plate 371 are not contacted with each other, when the constructors in the second carriage 3 move away completely, the door 38 is operated to move continuously, at this time, the top plate 381 drives the straight plate 371 to move, and under the guiding action of the adjusting block 37, the straight plate 371 drives the moving plate 363 to move, so that the positioning plate 36 releases the limit of the stop block 343.

Referring to fig. 2 and 3, at this time, the traction motor 43 drives the storage wheel 431 to continue unreeling, so that the first carriage 2 continues to move downwards, and when the first bottom plate 21 collides with the second bottom plate 31, a constructor in the first carriage 2 sequentially passes through the first inlet and outlet 22 and the second inlet and outlet 32 to leave the first carriage 2. In other embodiments, the lower end of the second carrying carriage 3 is provided with a guide rail cylinder, and the guide rail cylinder is used for driving the carriage door 38 to move, so that convenience in moving the carriage door 38 is improved.

Referring to fig. 3 and 7, two positioning rods 454 are provided at the lower end of the moving block 41, the two positioning rods 454 are symmetrically arranged with the supporting plate 45 as a center, a fixed plate is fixedly connected to the lower end of the moving block 41, the positioning rods 454 transversely pass through the fixed plate and are slidably connected with the fixed plate, and the moving block 41 drives the positioning rods 454 to move when moving. A push plate 453 is arranged between the support plate 45 and the positioning rod 454, one end of the push plate 453 is hinged with the support plate 45, the other end of the push plate 453 is hinged with the positioning rod 454, and the positioning rod 454 is driven to move by the push plate 453 when the support plate 45 moves.

Referring to fig. 3 and 7, the support frame 1 is provided with two sets of support shafts 11 along the length direction, the positioning rod 454 is opposite to the support shafts 11, all the support shafts 11 are uniformly arranged along the length direction of the support frame 1, and the distance between any two adjacent support shafts 11 is larger than the diameter of the positioning rod 454. When the support plate 45 collides with the support ring 411, the positioning lever 454 is located at a position away from the support shaft 11.

Referring to fig. 2 and 3, in the moving process of the first carriage 2, if the traction rope 42 breaks, when the first carriage 2 falls, the supporting plate 45 is far away from the supporting ring 411 under the action of the thrust spring 412, and the positioning rod 454 is driven to approach the supporting shaft 11 by the push plate 453 when the supporting plate 45 moves. When the positioning rod 454 is inserted between any two adjacent support shafts 11 and then abuts against the support shafts 11, the positioning rod 454 blocks the first bearing carriage 2 through the moving block 41, so that the probability of crash of the first bearing carriage 2 is reduced, and the safety of the first bearing carriage 2 is improved.

Referring to fig. 2 and 8, the lower end portion of the moving block 41 is further provided with supporting blocks 46 corresponding to the positioning rods 454, wherein one positioning rod 454 corresponds to two groups of supporting blocks 46, the two supporting blocks 46 are respectively located at two sides of the positioning rod 454, the supporting blocks 46 are both in sliding connection with the fixed plate, and the sliding direction is consistent with the sliding direction of the positioning rod 454. A movable spring 463 is arranged between the supporting block 46 and the fixed plate, one end of the movable spring 463 is fixedly connected with the supporting block 46, and the other end of the movable spring 463 is fixedly connected with the fixed plate. The moving spring 463 is in a compressed state, and thus applies a pushing force to the support block 46 toward the support shaft 11.

Referring to fig. 2 and 8, the support frame 1 is provided with a speed reduction plate 12 corresponding to the support block 46 in the length direction, the support block 46 is opposite to the speed reduction plate 12, and a plurality of triangular blocks 121 uniformly arranged are fixed to the speed reduction plate 12 in the length direction. The support block 46 is provided with a deceleration block 47 on a side close to the deceleration plate 12, and one end of the support block 46 close to the deceleration plate 12 is provided with an inclined surface which is inclined from bottom to top in a direction close to the deceleration plate 12. The supporting block 46 is provided with a guide groove 461 along an inclined surface, the deceleration block 47 is fixed with a slide 471 which is matched with the guide groove 461, and the slide 471 is positioned in the guide groove 461 and is in sliding connection with the supporting block 46 along the length direction of the guide groove 461. Under the cooperation of the guide groove 461 and the sliding block 471, the supporting block 46 drives the speed reducing block 47 to move when moving, one end of the speed reducing block 47 close to the speed reducing plate 12 is provided with a plurality of triangular openings 472, and all the triangular openings 472 are uniformly arranged along the vertical direction.

Referring to fig. 2 and 9, the supporting block 46 is fixedly connected with a rectangular plate 462, and when the rectangular plate 462 moves, the supporting block 46 is driven to move, the positioning rod 454 is fixed with a vertical plate 455, and the vertical plate 455 is located at one side of the push plate 453 near the supporting shaft 11. When the positioning rod 454 is at a position far away from the supporting shaft 11, the vertical plate 455 is abutted against the rectangular plate 462, and at this time, the supporting block 46 drives the speed reducing block 47 to be far away from the speed reducing plate 12, and the moving spring 463 is in a compressed state.

Referring to fig. 2 and 8, when the traction rope 42 is broken, the positioning rod 454 is moved toward the support shaft 11, the vertical plate 455 (refer to fig. 9) is separated from the rectangular plate 462 (refer to fig. 9), and at this time, the support block 46 is moved toward the reduction plate 12 by the moving spring 463, and at this time, the reduction block 47 collides with the triangle block 121, so that the reduction plate 12 applies resistance to the reduction block 47 through the triangle block 121, and a certain displacement occurs between the reduction block 47 and the support block 46 by the guide groove 461. The speed reducing plate 12 is used for reducing the speed of the moving block 41 through the matching of the speed reducing block 47 and the supporting block 46, so that the probability that the positioning rod 454 is not easy to extend into the gap of the supporting shaft 11 due to the fact that the falling speed of the moving block 41 is too high is reduced, and the safety is further improved.

The embodiment of the application provides a multi-layer driven lifting device, which has the implementation principle that: the support frame 1 is vertically installed, the first bearing carriage 2 is located in the second bearing carriage 3, and the carriage door 38 and the door sealing are opened, so that a constructor sequentially passes through the second inlet and outlet 32 and the first inlet and outlet 22 to enter the first bearing carriage 2. The traction motor 43 drives the traction rope 42 to roll, so that the traction rope 42 drives the first bearing carriage 2 to move through the moving block 41, at the moment, the lifting block 23 gradually approaches the stop block 343, when the upper end face of the lifting block 23 is in conflict with the arc face of the stop block 343, the stop block 343 is pushed along the arc face to enter the moving cavity 341, and after the lifting block 23 is in conflict with the limiting plate 33, the stop block 343 stretches out under the action of the first elastic piece 344, and the plane of the stop block 343 is opposite to the lower end face of the lifting block 23. The traction motor 43 is operated to stop moving, other constructors enter the carrying box II 3 along the inlet and outlet II 32, after the box door 38 is closed, the carrying box I2 is driven to move continuously by the traction motor 43, and under the cooperation of the lifting block 23 and the limiting plate 33, the carrying box II 3 is driven to move when the carrying box I2 moves. And then be favorable to promoting transportation bearing capacity, bear railway carriage or compartment one 2 and bear railway carriage or compartment two 3 and set up along vertical, its focus is close to support frame 1, consequently is favorable to improving the stability when transporting.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (6)

1. The utility model provides a multilayer driven lifting device, includes support frame (1), its characterized in that: the support frame (1) is connected with a first bearing box (2) in a vertical sliding manner, the support frame (1) is provided with a driving mechanism (4) for driving the first bearing box (2) to move, the lower end part of the first bearing box (2) is fixedly connected with a first bottom plate (21), one side of the first bearing box (2) is provided with a first inlet and outlet (22), the support frame (1) is also connected with a second bearing box (3) in a sliding manner along the length direction, the upper end part of the second bearing box (3) is provided with an opening matched with the first bearing box (2), the first bearing box (2) enters and exits the second bearing box (3) through the opening, the lower end part of the bearing box II (3) is fixedly provided with a bottom plate II (31), the bottom plate II (31) is opposite to the bottom plate I (21), one side of the bearing box II (3) is provided with an inlet and outlet II (32) communicated with the inlet and outlet I (22), the upper end part of the bearing box II (3) is fixedly connected with a limiting plate (33), the bottom plate I (21) is fixedly connected with a lifting block (23) along the circumferential direction, and the lifting block (23) is positioned between the bottom plate II (31) and the limiting plate (33); the bearing carriage II (3) is internally provided with a buffer block (34), the buffer block (34) is positioned at the upper end part of the bearing carriage II (3) and is vertically connected with the bearing carriage II (3) in a sliding way, a plurality of groups of buffers (35) are vertically arranged between the buffer block (34) and the bearing carriage II (3), one side, close to the bearing carriage I (2), of the buffer block (34) is provided with a plurality of stop blocks (343), the buffer block (34) is provided with a moving cavity (341) matched with the stop blocks (343), the moving cavity (341) is internally provided with a limiting block (342), the limiting block (342) is transversely connected with the buffer block (34) in a sliding way, an elastic part I (344) is arranged between the limiting block (342) and the buffer block (34), the first elastic piece (344) is used for pushing the limit block (342) to approach the first bearing carriage (2), the stop block (343) is positioned in the moving cavity (341) and is rotationally connected with the limit block (342), the upper end part of the stop block (343) is provided with a plane, the lower end part of the stop block (343) is provided with an arc surface intersected with the plane, a torsion spring (345) is arranged between the stop block (343) and the limit block (342), the plane of the stop block (343) is abutted with the buffer block (34) in the normal state, the buffer block (34) is connected with the positioning plate (36) in a sliding way along the transverse direction, the positioning plate (36) is positioned at the upper end part of the stop block (343) and is abutted against the stop block (343), the positioning plate (36) is provided with a yielding port (361) which is matched with the stop block (343); an elastic piece II (362) is arranged between the positioning plate (36) and the buffer block (34), under the normal state of the elastic piece II (362), the abdication port (361) and the stop block (343) are arranged in a staggered mode, one side of the positioning plate (36) deviating from the bearing box I (2) is fixedly connected with a moving plate (363), the buffer block (34) is provided with a moving groove (364) matched with the moving plate (363), the bearing box II (3) is connected with a box door (38) matched with the inlet and outlet II (32) in a sliding manner in the transverse direction, the upper end part of the box door (38) is fixedly connected with a top plate (381), the upper end part of the bearing box II (3) is connected with an adjusting block (37) in a sliding manner in the transverse direction, the adjusting block (37) is vertically fixed with a straight plate (371), the straight plate (371) stretches into the moving groove (364) to be in interference with the moving plate (363), and the top plate (381) is located at one side of the straight plate (371) away from the moving plate (363).

2. A multi-deck driven lifting device as defined in claim 1, wherein: the driving mechanism (4) comprises a moving block (41), a traction rope (42) and a traction motor (43), wherein the moving block (41) is vertically and slidably connected with the supporting frame (1), a bearing box I (2) is fixedly connected with the moving block (41), a supporting wheel (44) is arranged at the upper end of the moving block (41), the traction motor (43) is located above the supporting wheel (44) and is fixedly connected with the moving block (41), a storage wheel (431) is coaxially fixed on an output shaft of the traction motor (43), one end of the traction rope (42) is fixedly connected with the upper end of the supporting frame (1), and the other end of the traction rope is wound on the supporting wheel (44) and is fixedly connected with the outer circle of the storage wheel (431).

3. A multi-deck driven lifting device as defined in claim 2, wherein: support frame (1) is along equal fixedly connected with a plurality of back shafts (11) in width direction's both sides, movable block (41) lower extreme portion is equipped with backup pad (45), backup pad (45) upper end vertical fixation has montant (451), montant (451) pass movable block (41) and fixedly connected with rotating turret (452), supporting wheel (44) are connected with rotating turret (452) rotation, movable block (41) lower extreme portion is along horizontal sliding connection has two locating levers (454), the distance between two arbitrary adjacent back shafts (11) all is greater than locating lever (454) diameter, backup pad (45) articulated have push pedal (453) with locating lever (454) one-to-one, one end that backup pad (45) were kept away from to push pedal (453) is articulated with corresponding locating lever (454), end fixedly connected with holding ring (411) under movable block (41), be equipped with thrust spring (412) in holding ring (411), thrust spring (412) are used for driving backup pad (45) and keep away from movable block (41).

4. A multi-deck driven lifting device according to claim 3, wherein: the lower end part of the moving block (41) is slidably connected with a supporting block (46), the supporting frame (1) is vertically fixedly connected with a reducing plate (12) corresponding to the supporting block (46), one side of the reducing plate (12) close to the supporting block (46) is fixedly connected with a plurality of triangular blocks (121), a moving spring (463) is arranged between the supporting block (46) and the moving block (41), the moving spring (463) is used for pushing the supporting block (46) to approach the reducing plate (12), one end of the supporting block (46) close to the corresponding reducing plate (12) is provided with a reducing block (47), one side of the reducing block (47) close to the reducing plate (12) is provided with a plurality of triangular openings (472) matched with the triangular blocks (121), one side of the supporting block (46) close to the reducing plate (12) is provided with a guide groove (461), the guide groove (461) is obliquely arranged from bottom to top, the direction away from the supporting block (46) is fixedly connected with a sliding block (471) matched with the guide groove (461), the sliding block (471) is positioned in the guide groove (461), one side of the supporting block (46) close to the corresponding reducing block (12) is provided with a rectangular plate (462), the rectangular plate (462) is fixedly connected with the end part of the supporting block (46), the riser (455) is located on the side of the rectangular plate (462) that is adjacent to the speed reduction plate (12).

5. A multi-deck driven lifting device as defined in claim 1, wherein: the two sides of the first bearing box (2) are fixedly connected with supporting rods (24), the lower end parts of the supporting rods (24) are fixedly connected with mounting blocks (241), the mounting blocks (241) are positioned between the limiting plates (33) and the second bottom plate (31), the second bearing box (3) is fixedly connected with guide plates (39) which are matched with the mounting blocks (241), the installation piece (241) is offered and is had opening (242) with deflector (39) adaptation, and deflector (39) pass from opening (242), and installation piece (241) rotates and is connected with pulley (243), pulley (243) and deflector (39) roll connection, and equal fixedly connected with blotter (244) of upper end and lower tip of installation piece (241).

6. A multi-deck driven lifting device as defined in claim 1, wherein: the first base plate (21) is vertically provided with a climbing opening (211), the climbing opening (211) is hinged with a telescopic rod (25), the telescopic rod (25) comprises a plurality of sleeves (251) which are connected in a sliding mode in sequence from head to tail, all the sleeves (251) are vertically fixed with a cross rod (252) which is matched with the climbing opening (211), and the lower end portion of the first base plate (21) is connected with a cross plate (312) in a sliding mode along the transverse direction.