A hoisting device for bridge installation

Abstract

The utility model discloses a hoist device for bridge installation, including the bottom plate, the top side fixed mounting of bottom plate has the stand, and one side fixed connection has the connecting block of stand, is provided with synchronous lifting subassembly in the connecting block, and the bottom side fixed connection of connecting block has two connecting plates, and is provided with interval adjusting subassembly between two connecting plates, and two connecting plates are provided with two sliding blocks through interval adjusting subassembly, and two sliding blocks all are set up round hole, and the bottom side fixed connection of two sliding blocks has the limit cylinder, and two limit cylinders are linked with two round holes respectively, in synchronous lifting subassembly, first motor drives rotary lever to rotate, and makes rotary post reverse rotation through first gear and second gear engagement, and two winding wheels synchronous winding hoist rope, and this structure solves traditional single hook force imbalance problem, and double hook synchronous lifting avoids height difference, prevents material swing, compares traditional double hook independent control, promotes hoist safety and precision.

Description

Technical Field

[0001] This utility model relates to the field of bridge installation technology, and in particular to a hoisting device for bridge installation. Background Technology

[0002] In bridge construction projects, hoisting equipment plays a crucial role in transporting various bridge components (such as precast beams, steel trusses, and connecting plates) from the storage point to the installation location. Its performance directly affects construction efficiency, installation accuracy, and operational safety. Especially with the trend of modern bridges developing towards larger spans, lighter weight, and greater diversity, the differences in length and specifications of the materials to be hoisted are becoming increasingly significant, placing higher demands on the adaptability and stability of hoisting equipment.

[0003] Traditional bridge hoisting devices are mostly designed with single or double hooks for independent control. Single hooks, due to single-point force application, have high requirements for the material's center of gravity. When hoisting materials of different lengths, they are prone to severe swaying due to force imbalance, affecting safety and accuracy. While double hooks can share the load, the spacing adjustment is a crude manual operation, which is difficult to quickly adapt to materials of different lengths. Moreover, height differences during adjustment can exacerbate swaying. In addition, existing double hook devices lack a rope limiting mechanism, which makes the rope prone to deviation, resulting in unstable force at the connection point, increased wear, and increased risk of detachment. Therefore, a new hoisting device for bridge installation is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a hoisting device for bridge installation, which solves the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hoisting device for bridge installation includes a base plate, a column fixedly installed on the top side of the base plate, a connecting block fixedly connected to one side of the column, a synchronous lifting component installed inside the connecting block, two connecting plates fixedly connected to the bottom side of the connecting block, a spacing adjustment component installed between the two connecting plates, two sliders installed on the two connecting plates through the spacing adjustment component, each slider having a circular hole, a limit cylinder fixedly connected to the bottom side of each slider, the two limit cylinders communicating with the two circular holes respectively, and a measuring component installed on one side of the two connecting plates.

[0007] Preferably, the synchronous lifting assembly includes a first motor fixedly installed on one side of the connecting block, the output end of the first motor rotatably passing through the connecting block and fixedly connected to a rotating rod, and a first gear fixedly sleeved on the outer side of the rotating rod.

[0008] Preferably, a circular hole is provided on one side of the connecting block, and a rotating column is provided in the circular hole. One end of the rotating column is rotatably connected to the inner wall of one side of the connecting block, and a second gear is fixedly sleeved on the other end of the rotating column. The second gear meshes with the first gear. A winding wheel is fixedly sleeved on the outer side of both the rotating column and the rotating rod. A lifting rope is fixedly wound on both winding wheels. The other ends of the two lifting ropes pass through the circular holes of the two sliders and the limiting cylinder, and are fixedly connected to hooks.

[0009] Preferably, the spacing adjustment assembly includes a second motor fixedly installed on one side of the left connecting plate, the output end of the second motor rotating through the left connecting plate and fixedly connected to a bidirectional screw, the other end of the bidirectional screw being fixedly connected to one side of the right connecting plate, a common guide rod being fixedly connected between the two connecting plates, and two sliders being threaded onto the bidirectional screw and the guide rod.

[0010] Preferably, the measuring assembly includes two connecting plates with the same measuring ruler fixedly connected to one side, and two pointers fixedly connected to the top sides of the two sliders, with both pointers pointing to the measuring ruler.

[0011] Preferably, a controller is fixedly installed on one side of the column, and the controller is electrically connected to the first motor and the second motor respectively.

[0012] Preferably, two counterweights are placed on the top side of the base plate, with the two counterweights located on both sides of the column.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In the synchronous lifting assembly, the first motor drives the rotating rod to rotate, and through the meshing of the first gear and the second gear, the rotating column rotates in opposite directions. The two winding wheels synchronously wind up the lifting rope. This structure solves the problem of force imbalance in the traditional single hook. The synchronous lifting of the double hooks avoids height differences and prevents material swaying. Compared with the traditional independent control of double hooks, it improves the safety and accuracy of lifting.

[0015] 2. In the spacing adjustment component, the second motor drives the bidirectional screw to rotate, causing the two sliders to move. In conjunction with the pointer and measuring scale of the measuring component, the spacing of the lifting rope can be precisely adjusted to adapt to materials of different lengths. The limiting cylinder on the bottom side of the slider restricts the deviation of the lifting rope, solving the problems of coarse traditional double hook spacing adjustment and lack of lifting rope limiting, and avoiding unstable force at the connection point. Attached Figure Description

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

[0017] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0018] Figure 3This is a schematic diagram of some parts of the winding wheel structure of this utility model;

[0019] Figure 4 This is a schematic diagram of some parts of the positioning cylinder structure of this utility model.

[0020] In the diagram: 1. Base plate; 2. Column; 3. Connecting block; 4. First motor; 5. Rotating rod; 6. First gear; 7. Rotating column; 8. Second gear; 9. Rewinding reel; 10. Lifting rope; 11. Hook; 12. Connecting plate; 13. Second motor; 14. Bidirectional screw; 15. Guide rod; 16. Slider; 17. Limiting cylinder; 18. Pointer; 19. Measuring ruler; 20. Counterweight; 21. Controller. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Refer to Figure 1-4A hoisting device for bridge installation includes a base plate 1, a column 2 fixedly installed on the top side of the base plate 1, a connecting block 3 fixedly connected to one side of the column 2, a synchronous lifting assembly disposed within the connecting block 3, two connecting plates 12 fixedly connected to the bottom side of the connecting block 3, a spacing adjustment assembly disposed between the two connecting plates 12, and two sliders 16 disposed on the two connecting plates 12 via the spacing adjustment assembly. Each slider 16 has a circular hole, and a limit cylinder 17 is fixedly connected to the bottom side of each slider 16. The two limit cylinders 17 are respectively connected to the two circular holes. A measuring component is provided on the side. The synchronous lifting component includes a first motor 4 fixedly installed on one side of the connecting block 3. The output end of the first motor 4 rotatably passes through the connecting block 3 and is fixedly connected to a rotating rod 5. A first gear 6 is fixedly sleeved on the outer side of the rotating rod 5. A circular hole is opened on one side of the connecting block 3, and a rotating column 7 is provided in the circular hole. One end of the rotating column 7 is rotatably connected to the inner wall of one side of the connecting block 3. A second gear 8 is fixedly sleeved on the other end of the rotating column 7. The second gear 8 meshes with the first gear 6. Rewinding wheels 9 are fixedly sleeved on the outer sides of both the rotating column 7 and the rotating rod 5. Both are fixedly wound with lifting ropes 10. The other ends of the two lifting ropes 10 pass through the round holes of the two sliders 16 and the limiting cylinders 17, respectively, and are fixedly connected to hooks 11. With the first motor 4 installed, when materials need to be lifted, the two hooks 11 are hung on both sides of the materials. Then the first motor 4 is started to drive the rotating rod 5 to rotate clockwise. Since the other end of the rotating rod 5 is fixedly sleeved with the first gear 6, and the first gear 6 meshes with the second gear 8, under the meshing transmission of the first gear 6, the second gear 8 will drive the rotating column 7 connected to it to rotate counterclockwise. This causes the winding wheel 9, which is fixedly sleeved on the outer side of both the rotating rod 5 and the rotating column 7, to start synchronously winding the lifting rope 10. During the winding process, the material hanging on the two hooks 11 will gradually move upward. The two limiting cylinders 17, which are fixedly connected to the bottom side of the slider 16, can limit the two lifting ropes 10 to prevent swaying during the lifting process. Since the two limiting cylinders 17 are fixedly connected to the two sliders 16, the two limiting cylinders 17 can limit the lifting ropes 10 when lifting materials of different lengths.

[0023] Specifically, the spacing adjustment assembly includes a second motor 13 fixedly mounted on one side of the left connecting plate 12. The output end of the second motor 13 rotates through the left connecting plate 12 and is fixedly connected to a bidirectional screw 14. The other end of the bidirectional screw 14 is fixedly connected to one side of the right connecting plate 12. A common guide rod 15 is fixedly connected between the two connecting plates 12. Two sliders 16 are threaded onto the bidirectional screw 14 and the guide rod 15. The measuring assembly includes a measuring scale 19 fixedly connected to one side of both connecting plates 12. A pointer 18 is fixedly connected to the top side of each of the two sliders 16. The pointers 18 all point to the measuring scale 19. A second motor 13 is provided. When it is necessary to lift a long material, the second motor 13 is started to drive the bidirectional screw 14 to rotate counterclockwise. This causes the two sliders 16, which are threaded on the outer side of the bidirectional screw 14, to move away from each other. Since the two lifting ropes 10 are located in the round holes opened in the two sliders 16, the two lifting ropes 10 will also move away synchronously. The pointers 18 are fixedly connected to the top side of the two sliders 16, and the two pointers 18 are pointing towards the measuring scale 19. Therefore, the distance between them can be adjusted arbitrarily according to the length of the material.

[0024] Specifically, a controller 21 is fixedly installed on one side of the column 2. The controller 21 is electrically connected to the first motor 4 and the second motor 13 respectively. Two counterweights 20 are placed on the top side of the base plate 1. The two counterweights 20 are located on both sides of the column 2. By setting the controller 21, and because the controller 21 is electrically connected to the first motor 4 and the second motor 13 respectively, the controller 21 can control the forward and reverse rotation of the first motor 4 and the second motor 13, thereby realizing the winding and extension of the hoisting rope 10. At the same time, it can also realize the adjustment of the distance between the two sliders 16. By setting the counterweights 20, the two counterweights 20 can play a role in stabilizing the base plate 1. When hoisting heavier materials, just add a few more counterweights 20 to the base plate 1 to ensure the stability of the hoisting.

[0025] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be any conventional known device, such as a computer, that can control the operation of the electrical components mentioned in the article.

[0026] In use: When hoisting is required, hang the two hooks 11 at the preset hoisting points on both sides of the material, ensuring that the hooks 11 are securely connected to the material. Then start the first motor 4. The output shaft of the first motor 4 drives the rotating rod 5 to rotate clockwise. Because the end of the rotating rod 5 away from the first motor 4 is fixedly sleeved with the first gear 6, and the first gear 6 and the second gear 8 are in a meshing state, under the meshing transmission action of the first gear 6, the second gear 8 will drive the rotating column 7 fixedly connected to it to rotate counterclockwise synchronously. The outer sides of the rotating rod 5 and the rotating column 7 are both A winding wheel 9 is fixedly connected. As the rotating rod 5 and the rotating column 7 rotate synchronously in opposite directions, the two winding wheels 9 begin to synchronously wind up the lifting ropes 10 connected to them. During the winding process, the length of the lifting ropes 10 shortens evenly, and the materials hanging on the two hooks 11 gradually and smoothly move upward under balanced force, avoiding tilting or swaying. When it is necessary to lift longer materials, the first motor 4 is stopped first, and then the second motor 13 is started. The output shaft of the second motor 13 drives the bidirectional screw 14 to rotate counterclockwise. Because the bidirectional screw 14 has two... The screws have opposite threads and are adapted to the threaded holes on the inner sides of the two sliders 16. The two sliders 16 will move away from each other along the axial direction of the bidirectional screw 14. Since the two suspension ropes 10 pass through the circular holes of the two sliders 16, the movement of the sliders 16 will cause the two suspension ropes 10 to move away synchronously, thereby increasing the distance between the two hooks 11. The top sides of the two sliders 16 are fixedly connected to pointers 18, and the two pointers 18 are both pointing towards the measuring scale 19 fixed on the device frame. The operator can observe the pointers 18 on the measuring scale 19. The scale indicates that the distance between the two hooks 11 can be precisely adjusted according to the length of the material. After adjusting to the appropriate distance, the second motor 13 is turned off and the first motor 4 is started again. The winding wheel 9 continues to wind up the lifting rope 10, which can complete the lifting of longer materials. In addition, two limiting cylinders 17 are fixedly connected to the bottom side of the slider 16. The two lifting ropes 10 pass through the inner side of the two limiting cylinders 17 respectively. The limiting cylinders 17 can limit the horizontal displacement of the lifting ropes 10 and prevent the lifting ropes 10 from swaying due to the swing of the material or the action of wind during the lifting process.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hoisting device for bridge installation, comprising a base plate (1), characterized in that, A column (2) is fixedly installed on the top side of the base plate (1). A connecting block (3) is fixedly connected to one side of the column (2). A synchronous lifting component is provided inside the connecting block (3). Two connecting plates (12) are fixedly connected to the bottom side of the connecting block (3). A spacing adjustment component is provided between the two connecting plates (12). Two sliders (16) are provided on the two connecting plates (12) through the spacing adjustment component. Both sliders (16) have round holes. Limiting cylinders (17) are fixedly connected to the bottom side of both sliders (16). The two limiting cylinders (17) are respectively connected to the two round holes. A measuring component is provided on one side of the two connecting plates (12).

2. The hoisting device for bridge installation according to claim 1, characterized in that, The synchronous lifting assembly includes a first motor (4) fixedly installed on one side of the connecting block (3). The output end of the first motor (4) rotates through the connecting block (3) and is fixedly connected to a rotating rod (5). A first gear (6) is fixedly sleeved on the outside of the rotating rod (5).

3. The hoisting device for bridge installation according to claim 2, characterized in that, A circular hole is provided on one side of the connecting block (3), and a rotating column (7) is provided in the circular hole. One end of the rotating column (7) is rotatably connected to the inner wall of one side of the connecting block (3). The other end of the rotating column (7) is fixedly sleeved with a second gear (8). The second gear (8) meshes with the first gear (6). The outer sides of the rotating column (7) and the rotating rod (5) are both fixedly sleeved with winding wheels (9). The two winding wheels (9) are both fixedly wound with lifting ropes (10). The other ends of the two lifting ropes (10) pass through the circular holes opened in the two sliders (16) and the limiting cylinder (17) respectively, and are both fixedly connected with hooks (11).

4. The hoisting device for bridge installation according to claim 1, characterized in that, The spacing adjustment assembly includes a second motor (13) fixedly installed on one side of the left connecting plate (12). The output end of the second motor (13) rotates through the left connecting plate (12) and is fixedly connected to a bidirectional screw (14). The other end of the bidirectional screw (14) is fixedly connected to one side of the right connecting plate (12). The same guide rod (15) is fixedly connected between the two connecting plates (12). Both sliders (16) are threaded onto the bidirectional screw (14) and the guide rod (15).

5. A hoisting device for bridge installation according to claim 4, characterized in that, The measuring assembly includes two connecting plates (12) with the same measuring ruler (19) fixedly connected to one side, and two sliders (16) with pointers (18) fixedly connected to the top side, both pointers (18) pointing to the measuring ruler (19).

6. A hoisting device for bridge installation according to claim 1, characterized in that, A controller (21) is fixedly installed on one side of the column (2), and the controller (21) is electrically connected to the first motor (4) and the second motor (13).

7. A hoisting device for bridge installation according to claim 1, characterized in that, Two counterweights (20) are placed on the top side of the base plate (1), and the two counterweights (20) are located on both sides of the column (2).

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