WO2023001316A1

WO2023001316A1 - Hoisting device for prefabricated staircase

Info

Publication number: WO2023001316A1
Application number: PCT/CN2022/115833
Authority: WO
Inventors: 赵立鹤; 李辉; 尹苏江; 兰一聪; 杜春雨; 孔令轩; 李腾; 罗森; 刘名轩
Original assignee: 中铁九局集团第四工程有限公司; 中铁九局集团有限公司
Priority date: 2022-05-19
Filing date: 2022-08-30
Publication date: 2023-01-26
Also published as: CN114634093A; CN114634093B; SE2350228A1

Abstract

A hoisting device for a prefabricated staircase, comprising a lifting block (1), a mounting plate (2) and a steel wire rope (6), and further comprising a load bearing plate (3), a height adjusting mechanism, a horizontal adjusting mechanism and an anti-shaking device. The load bearing plate (3) is fixed below the mounting plate by means of a plurality of connecting rods (4). The height adjusting mechanism comprises a rotating roller (5) and a set of guide pulleys (7) distributed on two sides of the rotating roller (5). The rotating roller (5) is fixed on the mounting plate (2). The steel wire rope (6) is wound on the rotating roller (5). The two ends of the steel wire rope (6) are respectively wound on the outer sides of the guide pulleys (7) on the two sides, and freely fall on the lower part of the load bearing plate (3). The horizontal adjusting mechanism is fixed on the load bearing plate (3). The guide pulleys (7) are fixedly connected to the horizontal adjusting mechanism. The anti-shaking device comprises a first telescopic rod (11) and a second telescopic rod (12) that are adjustable in length. The present hoisting device for a prefabricated staircase is simple in structure and convenient to operate, facilitates the alignment and installation of a prefabricated staircase, and has high hoisting precision and safety.

Description

A hoisting device for prefabricated stairs

technical field

The invention belongs to the field of construction tools or other construction auxiliary equipment, and in particular relates to a hoisting device for prefabricated stairs.

Background technique

With the development of the construction industry, prefabricated building materials have been widely used for their convenient and fast installation methods and low prices. At present, stairs have also begun to be installed with prefabricated structures, but due to the large volume of prefabricated stairs , when installing, it needs to be moved and installed with the help of construction tools, that is, lifting devices. Existing hoisting device mostly adopts two suspension ropes to promote article, and stair is made up of the step section of continuous step, platform and enclosure member etc. In the prior art, when the prefabricated staircase is hoisted, due to the flexibility of the sling or wire rope, the prefabricated staircase is prone to shake during the hoisting process, which is not conducive to the installation operation, and it is difficult to make the precise alignment of the prefabricated staircase, and The prefabricated stairs shake a lot, and it is easy to accidentally injure others.

Contents of the invention

The object of the present invention is to provide a hoisting device for prefabricated stairs, at least to solve the problem that the hoisting of prefabricated stairs using slings or wire ropes is easy to shake during the hoisting process, which is not conducive to the installation operation.

In order to achieve the above object, the present invention provides the following technical solutions:

A hoisting device for prefabricated stairs, comprising a lifting block, a mounting plate and a steel wire rope, the hoisting device also includes a bearing plate, a height adjustment mechanism, a level adjustment mechanism and an anti-sway device;

The bearing plate is fixed below the mounting plate through a connecting rod, and is used for carrying and fixing the height adjustment mechanism, the horizontal adjustment mechanism and the anti-sway device;

The height adjustment mechanism includes a rotating roller and a set of guide pulleys distributed on both sides of the rotating roller, the rotating roller is fixed on the mounting plate, the steel wire rope is wound on the rotating roller, and the steel wire rope The two ends of the steel wire rope are respectively wound around the outer sides of the guide pulleys on both sides and freely hang down on the lower part of the bearing plate, and the two ends of the steel wire rope are fixed with hooks; the steel wire ropes on both sides of the rotating roller are reversely ;

The horizontal adjustment mechanism is fixed on the bearing plate, the guide pulley is fixedly connected with the horizontal adjustment mechanism, and the horizontal adjustment mechanism drives the two opposite guide pulleys to approach or move away; the horizontal adjustment mechanism It includes a two-way threaded shaft and a moving block, the guide pulley is fixed on the moving block, the two-way threaded shaft is fixed on the bearing plate, and the two ends are provided with thread segments with opposite helical directions, and the moving block includes Two, and threaded holes are arranged inside, and the moving block cooperates with the two-way threaded shaft so that the distance between the two guide pulleys can be adjusted;

The anti-sway device includes a first telescopic rod and a second telescopic rod with adjustable length, and the anti-sway device is fixed on the horizontal adjustment mechanism so that the horizontal distance between the first telescopic rod and the second telescopic rod Adjustable; the lengths of the first telescopic rod and the second telescopic rod are different, and the lower end is equipped with a collision plate; the first telescopic rod and the second telescopic rod are equipped with fastening handles ;

The bearing plate is provided with a guide slot, the moving block is slidably connected to the wall edge of the guide slot, the first telescopic rod passes through the guide slot and the moving block at one end of the bidirectional threaded shaft. block connection, the second telescopic rod passes through the guide channel and is connected to the moving block at the other end of the bidirectional threaded shaft;

A second rotary driving element for driving the rotating roller is fixed on the mounting plate, the rotating roller is fixedly sleeved on the outer periphery of the central shaft, and the second rotating driving element is connected to the central shaft.

Beneficial effect:

The hoisting device of the prefabricated staircase of the present invention comprises a height adjustment mechanism, a level adjustment mechanism and an anti-swaying device. The length and horizontal distance at both ends of the wire rope can be adjusted conveniently and quickly through the setting of the height adjustment mechanism and the horizontal adjustment mechanism. At the same time, a length scale and a height scale are provided to facilitate the observation of the position of the wire rope and accurate adjustment of the height and horizontal position; through The first telescopic rod, the second telescopic rod and the collision plate provided in the anti-shake device, when in use, the collision board is pulled to be in close contact with the surface of the prefabricated stairs, and the lengths of the anti-shake first telescopic rod and the second telescopic rod are fixed at the same time, In this way, during the lifting process, the prefabricated stairs will not shake due to the flexibility of the steel wire rope, which facilitates the alignment and installation of the prefabricated stairs and ensures accurate installation.

The hoisting device of the prefabricated staircase of the present invention has the advantages of simple structure, convenient operation, high hoisting precision and safety.

Description of drawings

Figure 1 is a schematic diagram of the front structure of the hoisting device.

Fig. 2 is a partial sectional structural schematic diagram of the hoisting device.

Fig. 3 is a structural schematic diagram of the rotating roller in the hoisting device.

Fig. 4 is a structural schematic diagram of the wire rope in the hoisting device.

Reference signs: 1-lifting block, 2-installation plate, 3-lifting plate, 4-connecting rod, 5-rotating roller, 6-wire rope, 7-guide pulley, 8-moving block, 9-first rotating drive element , 10-two-way threaded shaft, 11-first telescopic rod, 12-second telescopic rod, 13-interference plate, 14-fastening knob, 15-hook, 16-length scale line, 17-guiding channel, 18-height scale line, 19-second rotary drive element, 20-central shaft.

detailed description

As shown in Figures 1 and 2, according to an embodiment of the present invention, a hoisting device for prefabricated stairs is provided, including a hoisting block 1, a mounting plate 2 and a wire rope 6, and the hoisting device also includes a bearing plate 3, a height adjustment mechanism, Level adjustment mechanism and anti-sway device.

The carrying plate 3 is fixed below the mounting plate 2 by a plurality of connecting rods 4, the carrying plate 3 and the mounting plate 2 are horizontally arranged, and the carrying plate 3 is used for carrying and fixing the height adjustment mechanism, the horizontal adjustment mechanism and the anti-shaking device. The carrying plate 3 is provided with a guide slot 17 .

The height adjustment mechanism includes a rotating roller 5 and a group of guide pulleys 7 distributed on both sides of the rotating roller 5. The rotating roller 5 is fixed on the mounting plate 2, and the steel wire rope 6 is wound on the rotating roller 5. The two ends of the steel wire rope 6 are respectively wound. The outer sides of the guide pulleys 7 on both sides hang down freely on the bottom of the bearing plate 3 , and the two ends of the wire rope 6 are fixed with suspension hooks 15 .

In the specific embodiment of the present invention, a steel wire rope 6 is connected with two guide pulleys 7, and a steel wire rope 6 is wound on the rotating roller 5, and the two ends pass through the guide channel 17 of the bearing plate 3 to hang down. Both ends are provided with suspension hooks 15 for hooking the two ends of the prefabricated stairs.

The horizontal adjustment mechanism is fixed on the bearing plate 3, the guide pulleys 7 are fixedly connected with the horizontal adjustment mechanism, and the horizontal adjustment mechanism drives the two opposite guide pulleys 7 to approach or move away.

In a specific embodiment of the present invention, the horizontal adjustment mechanism includes a two-way threaded shaft 10 and a moving block 8, the guide pulley 7 is fixed on the moving block 8, the two-way threaded shaft 10 is fixed on the bearing plate 3, and two ends are provided with opposite helical The threaded section, the moving block 8 includes two, and the inside is provided with threaded holes, the moving block 8 cooperates with the two-way threaded shaft 10, so that the distance between the two moving blocks 8 can be adjusted, and then between the two guide pulleys 7 The distance is adjustable. The horizontal adjustment mechanism adjusts the horizontal distance between the two ends of the wire rope 6 to determine the horizontal position of the hooked prefabricated stairs.

In order to further prevent the prefabricated stairs from shaking during the hoisting process, the present invention is also equipped with an anti-swaying device. The anti-swaying device includes a first telescopic rod 11 and a second telescopic rod 12 with adjustable lengths, and the anti-swaying device is fixed on the horizontal adjustment mechanism so that the horizontal distance between the first telescopic rod 11 and the second telescopic rod 12 is adjustable.

In a specific embodiment of the present invention, the moving block 8 is slidably connected on the wall edge of the guide channel 17, the first telescopic rod 11 penetrates the guide channel 17 and is connected with the moving block 8 at one end of the two-way threaded shaft 10, and the second telescopic rod 12 runs through the guide slot 17 and is connected with the moving block 8 located at the other end of the bidirectional threaded shaft 10 . Both the first telescopic rod 11 and the second telescopic rod 12 are slidably connected to the side wall surface of the guide chute. The lower ends of the first telescopic rod 11 and the second telescopic rod 12 are all equipped with a collision plate 13, and the bottom surface of the collision board 13 is a rough surface, which can improve the stability of the collision board 13 in contact with the surface of the prefabricated stairs.

The lengths of the first telescopic rod 11 and the second telescopic rod 12 are different, the length value of the first telescopic rod 11 is larger than the length value of the second telescopic rod 12, the first telescopic rod 11 and the second telescopic rod 12 both include a sleeve and Telescopic column, the outer surface of the telescopic column is slidably connected with the inner surface of the sleeve, the fastening knob 14 includes a fastening bolt and a rotating handle, the outer surface of the sleeve is provided with a threaded hole, the fastening bolt passes through the threaded hole and The holes are matched and connected, and when the lengths of the first telescopic rod 11 and the second telescopic rod 12 need to be fixed, the fastening bolts can be tightened by turning the handle.

In a specific embodiment of the present invention, a first rotary driving element 9 is installed on the carrier plate 3 , and the first rotary driving element 9 is connected to the bidirectional threaded shaft 10 for driving the bidirectional threaded shaft 10 in rotation.

In specific embodiments of the present invention, the height adjustment mechanism, the level adjustment mechanism and the anti-shake device are provided with multiple groups; the supporting plate 3 is provided with a plurality of corresponding guide through grooves 17, and a plurality of two-way threaded shafts 10 are arranged in parallel, and the guide pulleys The quantity of 7 is identical with the quantity of moving block 8, and the quantity of steel wire rope 6 is identical with the quantity of bidirectional screw shaft 10, and the quantity of moving block 8 is twice of steel rope 6 quantity. In multiple sets of height adjustment mechanisms, only one rotating roller 5 can be provided, and multiple steel wire ropes 6 are respectively wound on the same rotating roller 5, or multiple rotating rollers 5 can be arranged, and the rotating rollers 5 are all fixed on the mounting plate 2 On, each wire rope 6 is wound on a rotating roller 5.

In a specific embodiment, the quantity value of the guide pulley 7 is the same as the quantity value of the moving block 8, both of which are 4; The roller 5 is located in the middle of the two guide pulleys 7 (in other embodiments, two rotating rollers can also be provided, and the two steel wire ropes are respectively wound on different rotating rollers), the bearing plate 3 and the two-way threaded shaft 10 are all horizontal Setting, the bearing plate 3 and the mounting plate 2 are fixedly connected through several connecting rods 4, and the mounting plate 2 is fixedly connected with the lifting block 1. When in use, the lifting block 1 is connected with the crane, and the output shaft of the first rotary drive element 9 is connected to the two-way The threaded shaft 10 is fixedly connected coaxially. When the two-way threaded shaft 10 rotates, the direction of movement of the two moving blocks 8 connected with it is opposite. The two ends of the wire rope 6 are connected with hooks 15, and the bottom surface of the collision plate 13 is a rough surface. When the prefabricated staircase needs to be hoisted, adjust the horizontal spacing and height difference between the two ends of the steel wire rope 6 according to the length and height of the prefabricated staircase. The distance between the two guide pulleys 7 changes, and then the horizontal distance between the two ends of the steel wire rope 6 is adjusted; when the height difference between the two ends of the steel wire rope 6 is adjusted, the turning roller 5 is rotated, and the steel rope 6 on one side of the turning roller 5 is withdrawn, and the turning roller 5. The steel wire rope 6 on the other side is released, and then the height difference between the two ends of the steel wire rope 6 is adjusted, and then the hook 15 can be connected to the prefabricated staircase, and then the conflicting plate 13 is pulled, so that the pulling conflicting plate 13 is closely connected to the surface of the prefabricated staircase. contact, while the length of the anti-shaking first telescopic rod 11 and the anti-shaking second telescopic rod 12 is fixed, so that in the lifting process, the prefabricated stairs will not shake because of the flexibility of the wire rope 6, which is convenient for the alignment and alignment of the prefabricated stairs Installation ensures accurate installation.

As shown in Figure 3, in the specific embodiment of the present invention, the second rotation driving element 19 that is used to drive the rotating roller 5 is fixed on the mounting plate 2, and the rotating roller 5 is fixedly sleeved on the outer periphery of the central shaft 20, and the second rotation driving Element 19 is connected to central shaft 20 . The output shaft of the second rotary drive element 19 is coaxially fixedly connected with the central shaft 20, and the second rotary drive element 19 can rotate forward and backward, so that it is convenient to adjust the two ends and the height difference of the steel wire rope 6. Both ends of the rotating roller 5 are provided with wire grooves, and the wire rope 6 is wound on the surface of the rotating roller 5 along the wire grooves, and the wire grooves have a rough surface. The steel wire rope 6 is wound three times at least on the surface of the rotating roller 5, and through the setting of rough wire slots, the steel wire rope 6 will not slip, ensuring smooth operation.

As shown in Fig. 1 and Fig. 4, in a specific embodiment of the present invention, a length scale line 16 is provided on the outer wall surface of the bearing plate 3, and the horizontal distance between the two ends of the steel wire rope 6 can be known through the setting of the length scale line 16. The side of steel wire rope 6 is provided with height scale line 18, and the zero scale mark of height scale line 18 is at the two ends of steel wire rope 6, can know the height difference value of steel wire rope 6 two ends by the setting of height scale line 18.

The working process of the hoisting device of the prefabricated staircase of the present invention is as follows: when the prefabricated staircase needs to be hoisted, the horizontal distance and the height difference between the two ends of the steel wire rope 6 are adjusted according to the length value and the height value of the prefabricated staircase, and when the horizontal distance between the two ends of the steel wire rope 6 is adjusted, the first When the driving element 9 is rotated, the two-way threaded shaft 10 rotates, the distance between the two guide pulleys 7 changes, and then the horizontal distance between the two ends of the steel wire rope 6 is adjusted; when the height difference between the two ends of the steel wire rope 6 is adjusted, the turning roller 5 rotates, The steel wire rope 6 on one side of the rotating roller 5 is retracted, and the steel wire rope 6 on the other side of the rotating roller 5 is released, so that the height difference between the two ends of the steel wire rope 6 is adjusted, and then the hook 15 can be connected to the prefabricated stairs, and then the collision plate is pulled 13, so that the pulling resistance plate 13 is in close contact with the surface of the prefabricated stairs, and at the same time the lengths of the anti-shaking first telescopic rods 11 and the second telescopic rods 12 are fixed, so that during the lifting process, the prefabricated stairs will not be affected by the wire rope 6 The flexibility shakes, which is convenient for the alignment and installation of prefabricated stairs, and ensures accurate installation.

Claims

A hoisting device for prefabricated stairs, comprising a lifting block, a mounting plate and a steel wire rope, characterized in that the hoisting device also includes a bearing plate, a height adjustment mechanism, a level adjustment mechanism and an anti-sway device;

The bearing plate is fixed below the mounting plate through a connecting rod, and is used for carrying and fixing the height adjustment mechanism, the horizontal adjustment mechanism and the anti-sway device;

The height adjustment mechanism includes a rotating roller and a set of guide pulleys distributed on both sides of the rotating roller, the rotating roller is fixed on the mounting plate, the steel wire rope is wound on the rotating roller, and the steel wire rope The two ends of the steel wire rope are respectively wound around the outer sides of the guide pulleys on both sides and freely hang down on the lower part of the bearing plate, and the two ends of the steel wire rope are fixed with hooks; the steel wire ropes on both sides of the rotating roller are reversely ;

The horizontal adjustment mechanism is fixed on the bearing plate, the guide pulley is fixedly connected with the horizontal adjustment mechanism, and the horizontal adjustment mechanism drives the two opposite guide pulleys to approach or move away; the horizontal adjustment mechanism It includes a two-way threaded shaft and a moving block, the guide pulley is fixed on the moving block, the two-way threaded shaft is fixed on the bearing plate, and the two ends are provided with thread segments with opposite helical directions, and the moving block includes Two, and threaded holes are arranged inside, and the moving block cooperates with the two-way threaded shaft so that the distance between the two guide pulleys can be adjusted;

The anti-sway device includes a first telescopic rod and a second telescopic rod with adjustable length, and the anti-sway device is fixed on the horizontal adjustment mechanism so that the horizontal distance between the first telescopic rod and the second telescopic rod Adjustable; the lengths of the first telescopic rod and the second telescopic rod are different, and the lower end is equipped with a collision plate; the first telescopic rod and the second telescopic rod are equipped with fastening handles ;

The bearing plate is provided with a guide slot, the moving block is slidably connected to the wall edge of the guide slot, the first telescopic rod passes through the guide slot and the moving block at one end of the bidirectional threaded shaft. block connection, the second telescopic rod passes through the guide channel and is connected to the moving block at the other end of the bidirectional threaded shaft;

A second rotary driving element for driving the rotating roller is fixed on the mounting plate, the rotating roller is fixedly sleeved on the outer periphery of the central shaft, and the second rotating driving element is connected to the central shaft.
The hoisting device for prefabricated stairs according to claim 1, wherein the height adjustment mechanism, the level adjustment mechanism and the anti-swaying device are provided with multiple groups;

The bearing plate is provided with a plurality of corresponding guide slots, a plurality of the two-way threaded shafts are arranged in parallel, the number of the guide pulleys is the same as the number of the moving blocks, and the number of the steel wire ropes is the same as the number of the two-way threaded shafts. The number of shafts is the same, and the number of the moving blocks is twice the number of the steel wire ropes.
The hoisting device for prefabricated stairs according to claim 2, wherein a first rotary drive element is installed on the bearing plate, and the first rotary drive element is connected with the two-way threaded shaft for Bi-directional threaded shaft rotary drive.
The hoisting device for prefabricated stairs according to claim 1, wherein a length scale line is arranged on the outer wall surface of the bearing plate for measuring the horizontal distance between the two ends of the steel wire rope.
The hoisting device for prefabricated stairs according to claim 1 or 4, characterized in that, the sides of the steel wire ropes are all provided with height scale lines;

The zero scale mark of the height scale line is on the two ends of the steel wire rope.
The hoisting device for prefabricated stairs according to claim 1, wherein wire grooves are arranged at both ends of the rotating roller, and the steel wire rope is wound on the surface of the rotating roller along the wire groove, and the wire groove Has a rough surface.