Auxiliary device for installing urban viaduct steel box girder

Abstract

The utility model relates to the technical field of building construction, and discloses an auxiliary device for mounting a steel box girder of an urban viaduct, which comprises a bottom plate, two rotating gears rotationally connected to the left side of the top end of the bottom plate, threaded rods fixedly connected to the middles of the rotating gears, and chains arranged on the outer sides of the two rotating gears. A driving motor is fixedly installed at the front end of the right side of the bottom plate, the other end of the front side threaded rod is fixedly connected to the output end of the driving motor, a movable plate is in threaded connection with the middles of the outer sides of the two threaded rods, and a hinge frame is fixedly connected to the top end of the movable plate; hydraulic cylinders are fixedly installed in the middles of the top ends of the movable plates. According to the steel box girder lifting device, the phenomenon that the steel box girder is difficult to install due to position deviation during installation can be reduced, the phenomenon that the work progress is delayed is reduced, the construction efficiency is improved, the difficulty during lifting of the steel box girder is conveniently reduced, and the lifting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an auxiliary device for installing a steel box girder of a city viaduct. Background Art

[0002] The steel box girder of urban viaduct, also known as steel plate box girder, is a common structural form for large-span bridges. This structure is usually used on bridges with larger spans. The steel box girder is connected by a full welding method including a top plate, a bottom plate, a web plate, a transverse diaphragm, a longitudinal diaphragm and stiffening ribs. During the manufacturing and installation process, construction workers usually need to divide the steel box girder into multiple beam sections. The top plate gradually forms a bridge deck through the longitudinal stiffening ribs and the cover plate. Factors such as human deviation of construction workers when installing and adjusting steel pipes cause misalignment of the weld interface after hoisting or deviation of the installation elevation. The elevation and weld interface of the steel box girder need to be aligned on site. The alignment and adjustment of the steel box girder after it is in place is time-consuming and labor-intensive, which invisibly increases the construction cost. When the steel box girder is unloaded, if the steel pipe needs to be cut and the sand tank needs to release sand, the process is difficult to control and there are safety hazards.

[0003] In order to solve the above problems, a utility model patent with announcement number CN205999793U discloses an auxiliary device for installing steel box girders of urban viaducts, including an upper top plate, a casing, and a base. The upper top plate is connected to the upper end of the casing, and the lower end of the casing is connected to the base. A plurality of jacks are arranged between the upper top plate and the base. The jacks are distributed circumferentially with the casing as the center. The casing can be extended and retracted up and down. The upper top plate can be raised or lowered along the casing by lifting or lowering the jack. The device has a simple structure, is easy to install and operate, improves production efficiency, and can achieve quick and easy installation, removal and reuse.

[0004] When the above-mentioned viaduct steel box girder installation auxiliary device is used, there are still some shortcomings:

[0005] 1. It is not convenient to flexibly move the position of the lifted steel box girder according to the position of the steel box girder after positioning. When the steel box girder is lifted after positioning, if the position after lifting is deviated, the steel box girder needs to be lowered back to the adjusted position and lifted again, which is troublesome, delays the work progress and reduces the work efficiency;

[0006] 2. When lifting the steel box girder, a manual rocker is used to control the lifting. However, the steel box girder is heavy, which increases the difficulty for the operator to lift the steel box girder, reduces the lifting efficiency, increases the workload, and easily causes muscle soreness for the operator, making it inconvenient to use;

[0007] 3. When the viaduct steel box girder is installed and lifted, the stabilizing effect is relatively weak, and it is not convenient to clamp and fix the steel box girder, which makes it easy for the steel box girder to tilt and become unstable during the lifting process, which may cause the steel box girder to fall and injure the operator, leading to a safety accident. Utility Model Content

[0008] The utility model aims to solve the shortcomings in the prior art and proposes an auxiliary device for installing a steel box girder of a city viaduct.

[0009] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an auxiliary device for installing a steel box girder of an urban viaduct, comprising a base plate, the top left side of the base plate is rotatably connected to two rotating gears, the middle part of the rotating gear is fixedly connected to a threaded rod, and chains are arranged on the outer sides of the two rotating gears, a driving motor is fixedly installed on the front end of the right side of the base plate, the other end of the threaded rod on the front side is fixedly connected to the output end of the driving motor, a movable plate is threadedly connected to the middle part of the outer sides of the two threaded rods, the top of the movable plate is fixedly connected to a hinge frame, the left bottom end of the hinge frame is fixedly connected to a fixed rod, a hydraulic cylinder is fixedly installed on the middle part of the top of the movable plate, the output end of the hydraulic cylinder is rotatably connected to the middle part of the outer side of the fixed rod, the top of the hinge frame is fixedly connected to a mounting plate, and the top of the mounting plate is fixedly connected to a storage plate.

[0010] As a further description of the above technical solution:

[0011] A two-way screw is rotatably connected to the middle part of the top of the mounting plate, and a bevel gear 1 is fixedly connected to the middle part of the two-way screw. A small motor is fixedly installed on the right side of the top of the mounting plate, and a bevel gear 2 is fixedly connected to the output end of the small motor. The front and rear sides of the outside of the two-way screw are threadedly connected to clamping plates, and the middle parts of the opposite sides of the two clamping plates are rotatably connected to two connecting rods, and the other end of the connecting rod is rotatably connected to a rotating plate, and the left and right ends of the opposite sides of the two clamping plates are fixedly connected to fixed tubes, and a push block is slidably connected to the inner side of the fixed tube, and the other end of the fixed tube is fixedly connected to a spring 1.

[0012] As a further description of the above technical solution:

[0013] Two mounting grooves are arranged on opposite sides of the inner parts of the plurality of rotating plates, and a second spring is fixedly connected to the inner side of the mounting groove. The first bevel gear is meshed with the second bevel gear.

[0014] As a further description of the above technical solution:

[0015] The other end of the second spring is fixedly connected with an elastic shell, and the outer side of the elastic shell is slidably connected to the inner side of the mounting groove.

[0016] As a further description of the above technical solution:

[0017] A stabilizing rod is fixedly connected to the middle of the top end of the bottom plate, and a stabilizing rod is slidably connected to the outer side of the stabilizing rod at the middle of the bottom end of the movable plate.

[0018] As a further description of the above technical solution:

[0019] A handle is fixedly connected to the right bottom end of the bottom plate, and a plurality of universal wheels are fixedly connected to the bottom end of the bottom plate.

[0020] As a further description of the above technical solution:

[0021] The other ends of the plurality of springs are fixedly connected to opposite sides of the plurality of rotating plates, the inner sides of the springs are arranged on the outer sides of the push blocks, and the opposite sides of the plurality of push blocks are fixedly connected to opposite sides of the plurality of rotating plates.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, by the mutual cooperation of rotating gears, threaded rods, chains, movable plates, hinges, fixed rods, hydraulic cylinders and mounting plates, the auxiliary device for installing the steel box girder is provided with the function of flexible movement according to the position to be installed after positioning, thereby reducing the deviation of the position during installation, thereby reducing the phenomenon of difficult installation, reducing the phenomenon of delay in work progress, improving construction efficiency, and facilitating the reduction of the difficulty in lifting the steel box girder, improving the lifting efficiency, eliminating the need for manual remote control lifting by the operator, reducing the workload, and thus reducing the phenomenon of muscle soreness in the operator's arms.

[0024] 2. In the utility model, through the mutual cooperation of the bidirectional screw rod, bevel gear one, bevel gear two, clamping plate, connecting rod, rotating plate, push block and spring one, the auxiliary device for installing the steel box girder is added, which is convenient for clamping the steel box girder during lifting, improves the stability of the steel box girder during rising, thereby reducing the phenomenon that the steel box girder tilts and falls due to instability, causing injuries to operators, and reducing the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of an auxiliary device for installing a steel box girder of an urban viaduct proposed by the utility model;

[0026] Figure 2 A schematic diagram of the clamping plate structure of an auxiliary device for installing a steel box girder of an urban viaduct proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the rotating plate structure of an auxiliary device for installing a steel box girder of an urban viaduct proposed by the utility model;

[0028] Figure 4 The utility model provides a schematic diagram of a fixed pipe structure of an auxiliary device for installing a steel box girder of an urban viaduct.

[0029] Legend:

[0030] 1. Bottom plate; 2. Rotating gear; 3. Threaded rod; 4. Chain; 5. Driving motor; 6. Moving plate; 7. Hinge; 8. Fixed rod; 9. Hydraulic cylinder; 10. Mounting plate; 11. Storage plate; 12. Bidirectional screw rod; 13. Bevel gear one; 14. Small motor; 15. Bevel gear two; 16. Clamping plate; 17. Connecting rod; 18. Rotating plate; 19. Fixed pipe; 20. Push block; 21. Spring one; 22. Mounting slot; 23. Spring two; 24. Elastic shell; 25. Stabilizer bar; 26. Handle; 27. Universal wheel. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-4 The utility model provides an embodiment: an auxiliary device for installing a steel box girder of an urban viaduct, comprising a bottom plate 1, two rotating gears 2 are rotatably connected to the left side of the top of the bottom plate 1, a threaded rod 3 is fixedly connected to the middle of the rotating gear 2, so that the rotating gear 2 drives the threaded rod 3 to rotate, a chain 4 is arranged on the outer side of the two rotating gears 2, so that the front rotating gear 2 drives the rear rotating gear 2 to rotate under the action of the chain 4, a driving motor 5 is fixedly installed at the front end of the right side of the bottom plate 1, and the other end of the front threaded rod 3 is fixedly connected to the output end of the driving motor 5, so that the driving The motor 5 drives the front threaded rod 3 to rotate, and the middle part of the outer side of the two threaded rods 3 is threadedly connected with a movable plate 6, and the top of the movable plate 6 is fixedly connected with a hinge frame 7 for easy lifting and lowering. The left bottom end of the hinge frame 7 is fixedly connected with a fixed rod 8, and the middle part of the top of the movable plate 6 is fixedly installed with a hydraulic cylinder 9. The output end of the hydraulic cylinder 9 is rotatably connected to the middle part of the outer side of the fixed rod 8, so that when the hydraulic cylinder 9 is extended, it pushes the fixed rod 8, thereby driving the hinge frame 7 to rise. The top of the hinge frame 7 is fixedly connected with a mounting plate 10, and the top of the mounting plate 10 is fixedly connected with a storage plate 11, which is convenient for the placement of the steel box girder.

[0033] A bidirectional screw rod 12 is rotatably connected to the middle part of the top of the mounting plate 10, and a bevel gear 13 is fixedly connected to the middle part of the bidirectional screw rod 12, so that the bevel gear 13 can drive the bidirectional screw rod 12 to rotate. A small motor 14 is fixedly installed on the right side of the top of the mounting plate 10, and a bevel gear 2 15 is fixedly connected to the output end of the small motor 14, so as to drive the bevel gear 2 15 to rotate. The front and rear sides of the outside of the bidirectional screw rod 12 are both threadedly connected with clamping plates 16 for easy clamping. Two connecting rods 17 are rotatably connected to the middle parts of the opposite sides of the two clamping plates 16, and the other end of the connecting rod 17 is rotatably connected to a rotating plate 18 to enhance the clamping force. Fixed tubes 19 are fixedly connected to the left and right ends of the opposite sides of the two clamping plates 16, and a push block 20 is slidably connected to the inner side of the fixed tube 19. A spring 21 is fixedly connected to the other end of the fixed tube 19 to facilitate pushing the rotating plate 18, thereby enhancing the clamping effect. Two mounting grooves 22 are arranged on the opposite sides of the multiple rotating plates 18, and the inner sides of the mounting grooves 22 are provided with the mounting grooves 22. A spring 23 is fixedly connected thereto, and the bevel gear 13 and the bevel gear 2 15 are meshedly connected. The other end of the spring 23 is fixedly connected thereto with an elastic shell 24, and the outer side of the elastic shell 24 is slidably connected to the inner side of the mounting groove 22, which is convenient for pushing the steel box girder and enhancing the tightness of the clamping. A stabilizing rod 25 is fixedly connected to the middle part of the top end of the bottom plate 1, and the middle part of the bottom end of the movable plate 6 is slidably connected to the outer side of the stabilizing rod 25, which is convenient for improving the stability of the movable plate 6 when moving. A handle 26 is fixedly connected to the bottom right end of the bottom plate 1, and a plurality of universal wheels 27 are fixedly connected to the bottom end of the bottom plate 1, which is convenient for the pushing device to move. The other ends of the plurality of springs 21 are all fixedly connected to the opposite sides of the plurality of rotating plates 18 to apply elastic force to the rotating plates 18. The inner side of the spring 21 is arranged on the outer side of the push block 20, which is convenient for reducing the deformation caused by the spring 21. The opposite sides of the plurality of push blocks 20 are all fixedly connected to the opposite sides of the plurality of rotating plates 18, which improves the stability of the connection between the rotating plate 18 and the clamping plate 16.

[0034] Working principle: when in use, place the viaduct steel box girder on the surface of the storage plate 11, and then start the driving motor 5, which drives the front threaded rod 3 to rotate, so that the front threaded rod 3 drives the front rotating gear 2 to rotate, and the rotating gear 2 is meshed with the chain 4, so that the front rotating gear 2 drives the rear rotating gear 2 to rotate, thereby driving the rear threaded rod 3 to rotate, and driving the movable plate 6 to move left and right as needed, so as to facilitate the movement of the steel box girder position, and then start the hydraulic cylinder 9, the extension of the hydraulic cylinder 9 drives the fixed rod 8 to be lifted, so that the hinge frame 7 rises, and drives the installation plate 10 to rise, so as to facilitate the lifting of the steel box girder, and facilitate flexible movement according to the position to be installed after positioning, reduce the position deviation during installation, thereby reducing the phenomenon of difficult installation, reduce the phenomenon of work progress being delayed, improve construction efficiency, and facilitate to reduce the difficulty of lifting the steel box girder. The lifting efficiency is improved. When the steel box girder is clamped and fixed, the small motor 14 is started, and the small motor 14 drives the rotation of the bevel gear 2 15. Because the bevel gear 2 15 is meshed with the bevel gear 1 13, the rotation of the bevel gear 13 is driven. When the bevel gear 13 rotates, the bidirectional screw rod 12 is driven to rotate, which is convenient for driving the clamping plates 16 on both sides to approach each other, and then the steel box girder is clamped. When clamping, the steel box girder is squeezed to the rotating plate 18, so that the rotating plate 18 pushes the rotating plate 18 under the push of the push block 20 and the spring 1 21, so as to facilitate the pushing of the steel box girder and the clamping. The elastic shell 24 pushes the steel box girder under the action of the spring 23, thereby enhancing the tightness of the clamping, facilitating the clamping of the steel box girder during lifting, and improving the stability of the steel box girder during rising, thereby reducing the tilting and falling of the steel box girder due to instability, causing the operator to be injured, and reducing the occurrence of safety accidents.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary device for installing a steel box girder of an urban viaduct, comprising a bottom plate (1), characterized in that: The top left side of the bottom plate (1) is rotatably connected to two rotating gears (2), the middle of the rotating gears (2) is fixedly connected to a threaded rod (3), and the outer sides of the two rotating gears (2) are provided with chains (4). The front end of the right side of the bottom plate (1) is fixedly installed with a driving motor (5), and the other end of the threaded rod (3) on the front side is fixedly connected to the output end of the driving motor (5). The middle parts of the outer sides of the two threaded rods (3) are threadedly connected to a moving plate (6), the top of the moving plate (6) is fixedly connected to a hinge (7), the left bottom end of the hinge (7) is fixedly connected to a fixed rod (8), the middle part of the top of the moving plate (6) is fixedly installed with a hydraulic cylinder (9), the output end of the hydraulic cylinder (9) is rotatably connected to the middle part of the outer side of the fixed rod (8), the top of the hinge (7) is fixedly connected to a mounting plate (10), and the top of the mounting plate (10) is fixedly connected to a storage plate (11).

2. The auxiliary device for installing a steel box girder of an urban viaduct according to claim 1, characterized in that: A bidirectional screw rod (12) is rotatably connected to the middle of the top of the mounting plate (10), and a bevel gear 1 (13) is fixedly connected to the middle of the bidirectional screw rod (12). A small motor (14) is fixedly installed on the right side of the top of the mounting plate (10), and a bevel gear 2 (15) is fixedly connected to the output end of the small motor (14). The front and rear sides of the outside of the bidirectional screw rod (12) are both threadedly connected to clamping plates (16), and the middle of the opposite sides of the two clamping plates (16) are both rotatably connected to two connecting rods (17), and the other end of the connecting rod (17) is rotatably connected to a rotating plate (18), and the left and right ends of the opposite sides of the two clamping plates (16) are both fixedly connected to a fixed tube (19), and a push block (20) is slidably connected to the inner side of the fixed tube (19), and the other end of the fixed tube (19) is fixedly connected to a spring 1 (21).

3. The auxiliary device for installing a steel box girder of an urban viaduct according to claim 2, characterized in that: Two mounting grooves (22) are arranged on opposite sides of the plurality of rotating plates (18), and a second spring (23) is fixedly connected to the inner side of the mounting groove (22). The first bevel gear (13) and the second bevel gear (15) are meshingly connected.

4. The auxiliary device for installing a steel box girder of an urban viaduct according to claim 3 is characterized in that: The other end of the second spring (23) is fixedly connected to an elastic shell (24), and the outer side of the elastic shell (24) is slidably connected to the inner side of the mounting groove (22).

5. The auxiliary device for installing a steel box girder of an urban viaduct according to claim 1, characterized in that: A stabilizing rod (25) is fixedly connected to the middle of the top end of the bottom plate (1), and a slidably connected to the outer side of the stabilizing rod (25) is a middle of the bottom end of the movable plate (6).

6. The auxiliary device for installing a steel box girder of an urban viaduct according to claim 1, characterized in that: A handle (26) is fixedly connected to the right bottom end of the bottom plate (1), and a plurality of universal wheels (27) are fixedly connected to the bottom end of the bottom plate (1).

7. The auxiliary device for installing a steel box girder of an urban viaduct according to claim 2, characterized in that: The other ends of the plurality of springs (21) are fixedly connected to opposite sides of the plurality of rotating plates (18), the inner sides of the springs (21) are arranged on the outer sides of the push blocks (20), and the opposite sides of the plurality of push blocks (20) are fixedly connected to opposite sides of the plurality of rotating plates (18).

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