Hoisting device for steel box girder construction

Abstract

The utility model discloses a hoisting device for steel box girder construction, which relates to the technical field of steel box girder construction and comprises a steel box girder body, a steel wire lifting rope mounted on a crane, a connecting piece fixedly connected to the outer wall of the bottom end of the steel wire lifting rope and a spacing-adjustable clamping mechanism, the spacing-adjustable clamping mechanism comprises a servo driving assembly, a bearing guide rail, two supporting plates symmetrically welded to the outer wall of the bottom of the bearing guide rail, a first two-way screw, two adjusting bases and two centering clamping assemblies sequentially arranged at the bottoms of the two adjusting bases. The distance between the two centering clamping assemblies can be flexibly adjusted, so that the steel box girder centering device can better adapt to steel box girder bodies with different lengths, and adaptability and practicability are improved; the two second servo motors can drive the two L-shaped clamping seats to be close to each other in a centering mode to stably clamp the two end areas of the steel box girder body, so that the stability in the hoisting process can be improved, and potential safety hazards in the hoisting process are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel box girder construction, in particular to a hoisting device for steel box girder construction. Background Art

[0002] Steel box girders are primarily used in bridges, and cranes are required to hoist them onto bridges during construction. However, existing cranes typically use hooks connected to ropes attached to the steel box girders for hoisting. This method of hoisting is unstable and poses numerous safety risks. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a hoisting device for steel box girder construction.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A hoisting device for steel box girder construction, comprising a steel box girder body, a steel wire rope installed on a crane, a connector fixedly connected to the outer wall of the bottom end of the steel wire rope, and a spacing-adjustable clamping mechanism;

[0006] The adjustable spacing clamping mechanism includes a servo drive assembly, a load-bearing guide rail welded to the bottom outer wall of the connecting piece, two support plates symmetrically welded to the bottom outer wall of the load-bearing guide rail, a No. 1 bidirectional screw, two adjustment seats symmetrically screwed to the two opposite threaded ends of the No. 1 bidirectional screw, and two centering clamping assemblies sequentially arranged at the bottom of the two adjustment seats.

[0007] As a preferred embodiment, both of the adjustment seats are slidably connected to the bearing guide rail, and the No. 1 bidirectional screw is connected to the inner walls of the two support plates respectively through two bearings.

[0008] As a preferred embodiment, the servo drive assembly includes a No. 1 servo motor fixedly mounted on the side wall of one of the support plates, a worm fixedly mounted on the output shaft of the No. 1 servo motor, and a worm wheel fixedly mounted on one end of the No. 1 bidirectional screw and meshing with the worm.

[0009] As a preferred embodiment, the centering clamping assembly includes a linear guide rail welded to the outer wall of the bottom of the adjustment seat, two mounting seats symmetrically fixed to the outer wall of the bottom of the linear guide rail, a No. 2 bidirectional screw rotatably installed between the two mounting seats, a manipulator and two L-shaped clamping seats symmetrically screwed on the two opposite threaded ends of the No. 2 bidirectional screw.

[0010] As a preferred embodiment, the manipulator includes a No. 2 servo motor fixedly mounted on the top outer wall of the linear guide rail, a driving pulley fixedly mounted on the output shaft of the No. 2 servo motor, and a driven pulley fixedly mounted on one end of the No. 2 bidirectional screw.

[0011] As a preferred embodiment, the driving pulley and the driven pulley are connected via the same transmission belt.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model controls the two adjustment seats to move closer to or farther away from each other through a No. 1 servo motor, so that the distance between the two centering clamping components can be flexibly adjusted, thereby better adapting to the use of steel box beam bodies of different lengths, thereby improving adaptability and practicality;

[0014] 2. The utility model can drive two sets of L-shaped clamping seats to align and close together to stably clamp the two end areas of the steel box girder body through two No. 2 servo motors, which can improve the stability during the lifting process and reduce safety hazards during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a partial three-dimensional enlarged structural diagram of the utility model;

[0017] Figure 3 For this utility model Figure 2 Schematic diagram of the three-dimensional enlarged structure of part A;

[0018] Figure 4 It is a three-dimensional enlarged structural schematic diagram of the centering clamping assembly in the utility model.

[0019] In the figure: 1. Crane; 2. Steel wire rope; 3. Connector; 4. Load-bearing guide rail; 5. Steel box girder body; 6. Support plate; 7. No. 1 bidirectional screw; 8. Adjustment seat; 9. No. 1 servo motor; 10. Worm; 11. Worm gear; 12. Linear guide rail; 13. Mounting seat; 14. No. 2 bidirectional screw; 15. L-shaped clamping seat; 16. No. 2 servo motor; 17. Driving pulley; 18. Driven pulley; 19. Transmission belt. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Example

[0022] Reference Figure 1-4A lifting device for steel box girder construction includes a steel box girder body 5, a steel wire rope 2 installed on a crane 1, a connector 3 fixedly connected to the outer wall of the bottom end of the steel wire rope 2, and a spacing-adjustable clamping mechanism. The spacing-adjustable clamping mechanism includes:

[0023] The bearing guide rail 4 and two support plates 6 are welded to the bottom outer wall of the connecting member 3 , and the two support plates 6 are symmetrically welded to the bottom outer wall of the bearing guide rail 4 ;

[0024] A No. 1 bidirectional screw 7 and two adjustment seats 8. The No. 1 bidirectional screw 7 is connected to the inner walls of the two support plates 6 through two bearings. The two adjustment seats 8 are symmetrically screwed on the two opposite threaded ends of the No. 1 bidirectional screw 7. Both adjustment seats 8 are slidably connected to the bearing guide rail 4.

[0025] The servo drive assembly includes a servo motor 9 fixedly mounted on the side wall of one of the support plates 6, a worm 10 fixedly mounted on the output shaft of the servo motor 9, and a worm wheel 11 fixedly mounted on one end of the bidirectional screw 7 and meshing with the worm 10;

[0026] Two centering clamping assemblies are sequentially arranged at the bottom of the two adjustment seats 8. The centering clamping assemblies include a linear guide 12 welded to the outer wall of the bottom of the adjustment seat 8, two mounting seats 13 symmetrically fixed to the outer wall of the bottom of the linear guide 12, a second bidirectional screw 14 rotatably mounted between the two mounting seats 13, a manipulator, and two L-shaped clamping seats 15 symmetrically screwed to the two opposite threaded ends of the second bidirectional screw 14;

[0027] Furthermore, the manipulator includes a No. 2 servo motor 16 fixedly mounted on the top outer wall of the linear guide rail 12, a driving pulley 17 fixedly mounted on the output shaft of the No. 2 servo motor 16, and a driven pulley 18 fixedly mounted on one end of the No. 2 bidirectional screw 14. The driving pulley 17 and the driven pulley 18 are connected by the same transmission belt 19.

[0028] The working principle of the utility model is as follows: first, the worm 10 is driven to rotate forward and reverse by the No. 1 servo motor 9, and then the worm wheel 11 engaged with the worm 10 drives the No. 1 bidirectional screw 7 to rotate forward and reverse, and then the two adjustment seats 8 threadedly connected with the No. 1 bidirectional screw 7 will move closer to or away from each other, so that the distance between the two centering clamping components can be flexibly adjusted, thereby better adapting to the use of steel box beam bodies 5 of different lengths, thereby improving adaptability and practicality;

[0029] Secondly, when the centering clamping assembly is in use, the active pulley 17 is driven to rotate by the No. 2 servo motor 16, and then under the transmission effect of the transmission belt 19, the driven pulley 18 will drive the No. 2 bidirectional screw 14 to rotate, and then the two L-shaped clamping seats 15 connected to the No. 2 bidirectional screw 14 will clamp and fix the steel box girder bodies 5 of different sizes. Then, the two No. 2 servo motors 16 can drive the two groups of L-shaped clamping seats 15 to center and approach to stably clamp the two end areas of the steel box girder body 5, which can improve the stability during the lifting process and reduce safety hazards during the lifting process.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lifting device for steel box girder construction, comprising a steel box girder body (5), a steel wire rope (2) mounted on a crane (1), and a connector (3) fixedly connected to the outer wall of the bottom end of the steel wire rope (2), characterized in that: Also included is a spacing-adjustable clamping mechanism; The spacing-adjustable clamping mechanism comprises a servo drive assembly, a bearing guide rail (4) welded to the bottom outer wall of the connecting member (3), two support plates (6) symmetrically welded to the bottom outer wall of the bearing guide rail (4), a No. 1 bidirectional screw (7), two adjustment seats (8) symmetrically screwed to two opposite threaded ends of the No. 1 bidirectional screw (7), and two centering clamping assemblies sequentially arranged at the bottom of the two adjustment seats (8).

2. A hoisting device for steel box girder construction according to claim 1, characterized in that: The two adjustment seats (8) are both slidably connected to the bearing guide rail (4), and the No. 1 bidirectional screw (7) is connected to the inner walls of the two support plates (6) through two bearings.

3. A hoisting device for steel box girder construction according to claim 1, characterized in that: The servo drive assembly comprises a No. 1 servo motor (9) fixedly mounted on the side wall of one of the support plates (6), a worm (10) fixedly sleeved on the output shaft of the No. 1 servo motor (9), and a worm wheel (11) fixedly sleeved on one end of the No. 1 bidirectional screw (7) and meshing with the worm (10).

4. A hoisting device for steel box girder construction according to claim 1, characterized in that: The centering clamping assembly comprises a linear guide rail (12) welded to the outer wall of the bottom of the adjustment seat (8), two mounting seats (13) symmetrically fixed to the outer wall of the bottom of the linear guide rail (12), a second bidirectional screw (14) rotatably mounted between the two mounting seats (13), a manipulator, and two L-shaped clamping seats (15) symmetrically screwed on two opposite threaded ends of the second bidirectional screw (14).

5. A hoisting device for steel box girder construction according to claim 4, characterized in that: The controller comprises a No. 2 servo motor (16) fixedly mounted on the top outer wall of the linear guide rail (12), a driving pulley (17) fixedly sleeved on the output shaft of the No. 2 servo motor (16), and a driven pulley (18) fixedly sleeved on one end of the No. 2 bidirectional screw (14).

6. A hoisting device for steel box girder construction according to claim 5, characterized in that: The driving pulley (17) and the driven pulley (18) are connected by transmission via the same transmission belt (19).

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