Hoisting device under trestle plate

Abstract

The utility model relates to a hoisting device under a trestle plate. The hoisting device comprises a bottom plate, a top plate, a support rod, a traction rope and a pulley, the supporting rod is connected between the bottom plate and the top plate, a screw is arranged on the upper end face of the bottom plate, a first nut is arranged on the lower end face of the supporting rod, the screw is in threaded fit with the first nut, the pulley is arranged on the top plate, and the traction rope is hung on the pulley. The hoisting device has the advantages that the height of the supporting rods is adjusted through the screws and the first nuts, so that the bottom plate and the top plate abut against the bottom walls and the top walls of the upper-layer supporting beams and the lower-layer supporting beams respectively to be fixed, hoisting can be conducted through the pulleys and the traction ropes, the structure is simple, installation is easy, and the occupied area is small; the method is suitable for the scene that only under-beam diagonal bracing space is arranged under a trestle plate of a supporting system, no structural bottom plate exists, and large hoisting equipment or hoisting machinery is not installed, and other professional construction cannot be affected in the hoisting process.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting equipment, and particularly relates to a hoisting device under a trestle board. Background Art

[0002] In the construction field, the support form of "single-row piles + three reinforced concrete internal supports" is not uncommon. A circular trestle board is arranged on the first-floor internal support to combine with a grab for vertical soil excavation. There is a large demand for hoisting and installation of steel structure scissors braces on the second and third internal supports. Since the top trestle board forms a closed roof surface, tower cranes and truck cranes cannot pass through the trestle board for vertical transportation. And at the bottom, there are only support beams and no plate surface, and the effective operation space is only the width range of the beam surface, so it is impossible to rely on small machinery for hoisting and lifting. Traditional mechanical hoisting methods cannot be applied in this environment, and only manual operations can be relied on.

[0003] According to the design requirements, the weight of the [25a channel steel of the steel structure scissors brace reaches 27.5 kg / m, each scissors brace is about 10 m long, with a weight of 275 kg, and the installation height reaches 3.6 m. Considering the weight and installation height of a single scissors brace, it is difficult to implement only by manual operation. Moreover, to meet the requirements of the support system, the number of scissors braces on the second and third supports is as many as more than 600, and all are in the space operation under the first-floor trestle board. Reserving lifting hooks according to the traditional construction method is also difficult to achieve due to the large number and the high-quality welding requirements of the scissors braces. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a hoisting device under a trestle board to overcome the above deficiencies in the prior art.

[0005] The technical solution for the utility model to solve the above technical problem is as follows: A hoisting device under a trestle board includes a bottom plate, a top plate, a support rod, a traction rope, and a pulley; the support rod is connected between the bottom plate and the top plate, a screw rod is arranged on the upper end surface of the bottom plate, a first nut is arranged on the lower end surface of the support rod, the screw rod is in threaded cooperation with the first nut, the pulley is arranged on the top plate, and the traction rope is suspended on the pulley.

[0006] The beneficial effect of the utility model is: By adjusting the height of the support rod through the screw rod and the first nut, the bottom plate and the top plate are respectively abutted against the bottom wall and the top wall of the upper and lower layers of support beams to achieve fixation, and then hoisting can be carried out through the pulley and the traction rope. The structure is simple, easy to install, occupies a small area, is suitable for the scenario where there is only the space of the beam-to-beam bracing under the trestle board of the support system, there is no structural bottom plate, and it is not possible to install large hoisting equipment or lifting machinery. The hoisting process will not affect other professional constructions either.

[0007] On the basis of the above technical solution, the utility model can also be improved as follows.

[0008] Further, a lower fixing sleeve is arranged above the bottom plate, an adjusting sleeve is arranged between the support rod and the lower fixing sleeve, the adjusting sleeve is sleeved on the lower end of the support rod and the upper end of the lower fixing sleeve respectively, a second nut is arranged at the upper end of the lower fixing sleeve, the screw rod is coaxially fixed inside the adjusting sleeve, the thread directions of the upper half and the lower half of the screw rod are opposite, and the first nut and the second nut are respectively threadedly connected with the upper half and the lower half of the screw rod.

[0009] Further, it further includes an installation sleeve, the first nut is arranged at the lower end of the installation sleeve, an upper fixing sleeve is arranged below the top plate, and the two ends of the support rod are respectively detachably connected between the installation sleeve and the upper fixing sleeve.

[0010] Further, a limiting piece is arranged in the middle of the installation sleeve and below the support rod.

[0011] Further, a sliding rod is arranged on the lower end surface of the top plate, a sliding block is slidably connected to the sliding rod, and a pulley is connected below the sliding block.

[0012] Further, the sliding block is T-shaped, a T-shaped sliding groove is arranged along the length direction inside the sliding rod, and the sliding block slides in the T-shaped sliding groove.

[0013] Further, a positioning bolt is connected to the top of the pulley, a threaded hole is penetrated through the sliding block, and the positioning bolt is in threaded fit with the threaded hole.

[0014] Further, it further includes a motor, a wire winding wheel is connected to the rotating shaft of the motor, and one end of the towing rope is connected to the wire winding wheel.

[0015] Further, the towing rope is a steel wire rope or an iron chain. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;

[0018] Figure 3 is a schematic cross-sectional structural diagram of the sliding rod of the present utility model.

[0019] In the drawings, the list of components represented by each reference numeral is as follows:

[0020] 1. Bottom plate; 2. Top plate; 3. Support rod; 4. Towing rope; 5. Pulley; 6. Screw rod; 7. First nut; 8. Upper fixing sleeve; 9. Lower fixing sleeve; 10. Adjusting sleeve; 11. Support rib; 12. Limiting piece; 13. Sliding rod; 14. Sliding block; 15. T-shaped sliding groove; 16. Positioning bolt; 17. Threaded hole; 18. Motor; 19. Wire winding wheel; 20. Second nut; 21. Installation sleeve. Detailed Embodiment

[0021] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0022] As Figures 1 to 3 shown, in Embodiment 1, a hoisting device under a trestle board includes a bottom plate 1, a top plate 2, a support rod 3, a towing rope 4, and a pulley 5; the support rod 3 is connected between the bottom plate 1 and the top plate 2, a screw rod 6 is arranged on the upper end surface of the bottom plate 1, a first nut 7 is arranged on the lower end surface of the support rod 3, the screw rod 6 is in threaded cooperation with the first nut 7, the pulley 5 is arranged on the top plate 2, and the towing rope 4 is suspended on the pulley 5.

[0023] By adjusting the height of the support rod 3 through the screw rod 6 and the first nut 7, so that the bottom plate 1 and the top plate 2 are respectively abutted against the bottom wall and the top wall of the upper and lower layers of support beams to achieve fixation, hoisting can be carried out through the pulley 5 and the towing rope 4. The structure is simple, easy to install, occupies a small area, and is suitable for the scenario where there is only the space of the beam-to-beam bracing under the trestle board of the support system, there is no structural bottom plate, and it is not possible to install large hoisting equipment or lifting machinery. Other professional construction will not be affected during the hoisting process.

[0024] Embodiment 2 is a further improvement based on Embodiment 1, and the specific content is as follows:

[0025] A lower fixing sleeve 9 is arranged above the bottom plate 1, an adjusting sleeve 10 is arranged between the support rod 3 and the lower fixing sleeve 9, the adjusting sleeve 10 is respectively sleeved on the lower end of the support rod 3 and the upper end of the lower fixing sleeve 9, a second nut 20 is arranged on the upper end of the lower fixing sleeve 9, the screw rod 6 is coaxially fixed inside the adjusting sleeve 10, the thread directions of the upper half and the lower half of the screw rod 6 are opposite, and the first nut 7 and the second nut 20 are respectively threadedly connected to the upper half and the lower half of the screw rod 6.

[0026] During the adjustment process, only by rotating the adjusting sleeve 10 can the height be adjusted, without driving the entire bottom plate 1 to rotate, which is more labor-saving; the thread directions of the upper half and the lower half of the screw rod 6 are opposite, and the adjustment efficiency is higher; in specific implementation, the cross-section of the adjusting sleeve 10 is designed to be non-circular, which can be pentagonal, hexagonal or octagonal, preferably hexagonal, and a wrench can be used for rotation adjustment, which is more labor-saving; in addition, bolts are respectively arranged at the upper and lower ends of the adjusting sleeve, and can be locked by tightening the bolts after adjustment.

[0027] Embodiment 3 is a further improvement based on Embodiment 2, and the specific content is as follows:

[0028] It further includes an installation sleeve 21, the first nut 7 is arranged at the lower end of the installation sleeve 21, an upper fixing sleeve 8 is arranged below the top plate 2, and both ends of the support rod 3 are detachably connected between the installation sleeve 21 and the upper fixing sleeve 8.

[0029] The support rod 3 can be made on-site according to requirements. It only needs to be fixed between the upper fixing sleeve 8 and the mounting sleeve 21 through bolts. Specifically, in the implementation, a support rod 3 with a height approximately similar to that between the upper and lower support beams can be selected, which can improve the efficiency of telescopic adjustment of the device. In addition, the detachable connection method is more convenient for transportation and storage. Support ribs 11 are respectively arranged between the upper fixing sleeve 8 and the top plate 2, and between the lower fixing sleeve 9 and the bottom plate 1 to play a supporting role and make the fixation more firm.

[0030] Example 4 is a further improvement based on Example 3, and the specific content is as follows:

[0031] A limiting piece 12 is arranged in the middle of the mounting sleeve 21 below the support rod 3. The limiting piece 12 can prevent the support rod 3 from sliding downward when bearing weight.

[0032] Example 5 is a further improvement based on Example 1, and the specific content is as follows:

[0033] A sliding rod 13 is arranged on the lower end face of the top plate 2. A slider 14 is slidably connected to the sliding rod 13, and the pulley 5 is connected below the slider 14. The position of the pulley 5 can be adjusted according to requirements to avoid friction between the traction rope 4 and the side wall of the support beam.

[0034] Example 6 is a further improvement based on Example 5, and the specific content is as follows:

[0035] The slider 14 is T-shaped, and a T-shaped sliding groove 15 is arranged along the length direction of the sliding rod 13. The slider 14 slides in the T-shaped sliding groove 15. The structure is simple and the production cost is lower.

[0036] Example 7 is a further improvement based on Example 6, and the specific content is as follows:

[0037] A positioning bolt 16 is connected to the top of the pulley 5, and a threaded hole 17 is penetrated through the slider 14. The positioning bolt 16 is in threaded cooperation with the threaded hole 17. When the positioning bolt 16 is tightened, the upper end face of the positioning bolt 16 abuts against the upper end face of the T-shaped sliding groove 15 to achieve positioning and avoid the traction rope 4 from shaking due to the movement of the pulley 5 during the hoisting process.

[0038] Example 8 is a further improvement based on Example 1, and the specific content is as follows:

[0039] It further includes a motor 18. The rotating shaft of the motor 18 is connected with a wire reel 19, and one end of the traction rope 4 is connected with the wire reel 19. The motor 18 drives the wire reel 19 to wind and unwind the wire, replacing the traditional manual pulling method and greatly improving the efficiency.

[0040] Example 9. This example is a further improvement based on Example 1, and the details are as follows:

[0041] The towing rope 4 is a steel wire rope or a steel chain, which has better load-bearing capacity and higher safety.

[0042] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A hoisting device under a trestle board, characterized in that: The invention comprises a bottom plate (1), a top plate (2), a support rod (3), a traction rope (4) and a pulley (5); the support rod (3) is connected between the bottom plate (1) and the top plate (2); a screw rod (6) is arranged on the upper end surface of the bottom plate (1); a first nut (7) is arranged on the lower end surface of the support rod (3); the screw rod (6) and the first nut (7) are threadedly matched; the pulley (5) is arranged on the top plate (2); and the traction rope (4) is suspended on the pulley (5).

2. A trestle board under-lifting device according to claim 1, characterized in that: A lower fixing sleeve (9) is arranged above the bottom plate (1), an adjusting sleeve (10) is arranged between the support rod (3) and the lower fixing sleeve (9), the adjusting sleeve (10) is respectively sleeved on the lower end of the support rod (3) and the upper end of the lower fixing sleeve (9), a second nut (20) is arranged on the upper end of the lower fixing sleeve (9), the screw rod (6) is coaxially fixed inside the adjusting sleeve (10), the upper half and the lower half of the screw rod (6) have opposite thread directions, and the first nut (7) and the second nut (20) are respectively threadedly connected to the upper half and the lower half of the screw rod (6).

3. A trestle board under-lifting device according to claim 2, characterized in that: It also comprises a mounting sleeve (21), the first nut (7) being arranged at the lower end of the mounting sleeve (21), an upper fixing sleeve (8) being arranged below the top plate (2), and the two ends of the support rod (3) being detachably connected between the mounting sleeve (21) and the upper fixing sleeve (8).

4. The under-deck hoisting device according to claim 3, characterized in that: A limiting plate (12) is provided in the middle of the mounting sleeve (21) below the support rod (3).

5. The under-deck hoisting device according to claim 1, characterized in that: A sliding rod (13) is provided on the lower end surface of the top plate (2), a sliding block (14) is slidably connected to the sliding rod (13), and the pulley (5) is connected below the sliding block (14).

6. The under-deck hoisting device according to claim 5, characterized in that: The sliding block (14) is T-shaped, and a T-shaped sliding groove (15) is arranged inside the sliding rod (13) along its length direction, and the sliding block (14) slides in the T-shaped sliding groove (15).

7. The under-deck hoisting device according to claim 6, characterized in that: A positioning bolt (16) is connected to the top of the pulley (5), a threaded hole (17) is provided through the slider (14), and the positioning bolt (16) is threadably engaged with the threaded hole (17).

8. The under-deck hoisting device according to claim 1, characterized in that: It also comprises a motor (18), the rotating shaft of the motor (18) being connected to a winding wheel (19), and one end of the traction rope (4) being connected to the winding wheel (19).

9. The under-deck hoisting device according to claim 1, characterized in that: The traction rope (4) is a steel wire rope or an iron chain.

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