Bridge rotation limiting device

Abstract

The utility model relates to the technical field of bridge rotation, and discloses a bridge rotation limiting device. The device comprises an equipment bearing table, a lower seat plate is fixedly connected in the equipment bearing table, a motor is fixedly connected to the top of the lower seat plate, two mounting plates are fixedly connected to the top of the lower seat plate, a rotating rod is fixedly connected to an output shaft of the motor, and the rotating rod is fixedly connected to an output shaft of the motor. One end of the rotating rod penetrates through one of the mounting plates and is rotationally connected with one of the mounting plates, a right-hand and left-hand threaded rod is rotationally connected between the two mounting plates, the motor and the right-hand and left-hand threaded rod are in transmission connection with nails, an upper seat plate is fixedly connected to the top of the upper spherical hinge, and a pier is fixedly connected to the top of the upper seat plate. When the device is used, the upper spherical hinge can be limited after rotation operation is completed, the situation that a bridge continues to rotate due to the influence of inertia of the bridge, errors occur when the bridge deviates from the specified position is avoided, and the practicability of the device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge rotation technology, in particular to a bridge rotation limiting device. Background Art

[0002] The bridge rotation construction technology is a special bridge construction method, mainly used when crossing existing traffic lines such as railways, highways, etc. or other obstacles. In order to avoid the impact of construction on traffic, a bridge construction technology is adopted. The bridge rotation construction technology can minimize the impact on existing traffic, improve construction efficiency, and ensure construction safety at the same time. This construction method has high requirements for construction technology and equipment, and requires precise calculation and control to ensure the smooth progress of the rotation process. In China, with the rapid development of transportation infrastructure construction, the bridge rotation construction technology has been widely used, especially in the construction of bridges in urban traffic busy areas and complex terrain conditions. For example, the Wuhan Yangtze River Parrot Island Bridge, the Chongqing Chaotianmen Yangtze River Bridge, etc. have all adopted the rotation construction technology.

[0003] Currently, when the bridge is rotating during construction operations, it is generally rotated by a tractor and a traction cable. However, this mechanical traction rotation cannot be limited after rotating to the specified position. The bridge will continue to rotate due to the influence of its own inertia, deviating from the specified position and causing errors, resulting in inaccurate bridge positioning and affecting subsequent construction operations, thus weakening the practicability of the equipment. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a bridge rotation limiting device.

[0005] The utility model is realized by adopting the following technical solutions: an equipment load-bearing platform, a lower seat plate is fixedly connected inside the equipment load-bearing platform, a motor is fixedly connected to the top of the lower seat plate, two mounting plates are fixedly connected to the top of the lower seat plate, a rotating rod is fixedly connected to the output shaft of the motor, one end of the rotating rod penetrates through one of the mounting plates and is rotatably connected to one of the mounting plates, a positive and negative threaded rod is rotatably connected between the two mounting plates, the motor is in transmission connection with the positive and negative threaded rod, two fixture bodies are threadedly connected to the positive and negative threaded rod, a corresponding limit pin is fixedly connected to one side of each of the two fixture bodies, a lower spherical hinge is fixedly connected to the top of the lower seat plate, a central rotating shaft steel bar is installed inside the lower spherical hinge, an upper spherical hinge is installed on the top of the lower spherical hinge, a plurality of limit holes are formed in the upper spherical hinge, the limit pin is adapted to the limit hole, an upper seat plate is fixedly connected to the top of the upper spherical hinge, and a bridge pier is fixedly connected to the top of the upper seat plate.

[0006] As a further improvement of the above solution, one end of the rotating rod is fixedly connected with a first synchronous pulley. One end of the positive and negative threaded rod extends outside one of the mounting plates and is rotatably connected to the mounting plate. One end of the positive and negative threaded rod is fixedly connected with a second synchronous pulley. A synchronous belt is sleeved on the first synchronous pulley and the second synchronous pulley together.

[0007] As a further improvement of the above solution, the same sliding rod is fixedly connected to one side of each of the two mounting plates. The two ends of the sliding rod respectively penetrate through the corresponding fixture body and are slidably connected to the corresponding fixture body.

[0008] As a further improvement of the above solution, an annular slideway is fixedly connected inside the equipment load-bearing platform. A plurality of support feet are slidably connected to the top of the annular slideway. Connecting rings are fixedly connected to the plurality of support feet. The plurality of support feet and the connecting rings are all fixedly connected to the bridge pier.

[0009] As a further improvement of the above solution, two fixed seats are fixedly connected to the top of the equipment load-bearing platform. Corresponding traction devices are fixedly connected to one end of each of the two fixed seats. Two traction cables are sleeved on the connecting ring. The two traction devices are respectively connected to the corresponding traction cables.

[0010] As a further improvement of the above solution, a positioning steel frame is fixedly connected to the bottom of the lower seat plate. A plurality of support frames are fixedly connected to the bottom of the annular slideway.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] By arranging structures such as an equipment load-bearing platform, a motor, a synchronous belt, a central rotating shaft steel bar, and a bridge pier, the present utility model can limit the upper spherical hinge after the rotation operation during the use of the equipment, preventing the bridge from continuing to rotate due to its own inertia and deviating from the specified position to cause errors, thereby greatly improving the practicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall structural schematic diagram of the bridge rotation limiting device of the present utility model;

[0014] Figure 2 is the first split structural schematic diagram of the bridge rotation limiting device of the present utility model;

[0015] Figure 3 is the second split structural schematic diagram of the bridge rotation limiting device of the present utility model;

[0016] Figure 4 is the third split structural schematic diagram of the bridge rotation limiting device of the present utility model;

[0017] Figure 5 is the spherical hinge structural schematic diagram of the bridge rotation limiting device of the present utility model;

[0018] Figure 6 This is a schematic cross-sectional view of the overall structure of the bridge rotation limiting device of the present utility model.

[0019] Main symbol explanations:

[0020] 1. Equipment load-bearing platform; 2. Positioning steel frame; 3. Lower seat plate; 4. Motor; 5. First synchronous pulley; 6. Synchronous belt; 7. Second synchronous pulley; 8. Left and right threaded rod; 9. Clamp body; 10. Limit pin; 11. Mounting plate; 12. Slide bar; 13. Lower spherical hinge; 14. Central rotating shaft steel bar; 15. Upper spherical hinge; 16. Limit hole; 17. Upper seat plate; 18. Annular slideway; 19. Support frame; 20. Support leg; 21. Connecting ring; 22. Traction cable; 23. Fixed seat; 24. Traction device; 25. Bridge pier. Specific embodiments

[0021] Next, in combination with the accompanying drawings and specific embodiments, the present utility model will be further described.

[0022] Please refer to Figures 1 to 6 , the bridge rotation limiting device of this embodiment includes: an equipment load-bearing platform 1, a lower seat plate 3 is fixedly connected inside the equipment load-bearing platform 1, a motor 4 is fixedly connected to the top of the lower seat plate 3, two mounting plates 11 are fixedly connected to the top of the lower seat plate 3, a rotating rod is fixedly connected to the output shaft of the motor 4, one end of the rotating rod penetrates through one of the mounting plates 11 and is rotatably connected to one of the mounting plates 11, a left and right threaded rod 8 is rotatably connected between the two mounting plates 11, the motor 4 is in transmission connection with the left and right threaded rod 8, two clamp bodies 9 are threadedly connected to the left and right threaded rod 8, a corresponding limit pin 10 is fixedly connected to one side of each of the two clamp bodies 9, a lower spherical hinge 13 is fixedly connected to the top of the lower seat plate 3, a central rotating shaft steel bar 14 is installed inside the lower spherical hinge 13, an upper spherical hinge 15 is installed on the top of the lower spherical hinge 13, a plurality of limit holes 16 are formed in the upper spherical hinge 15, the limit pin 10 is adapted to the limit holes 16, an upper seat plate 17 is fixedly connected to the top of the upper spherical hinge 15, and a bridge pier 25 is fixedly connected to the top of the upper seat plate 17.

[0023] Through the above technical solution, when the device is in use, after the rotation operation is completed, the upper spherical hinge 15 can be limited to prevent it from continuing to rotate due to its own inertia, improving the practicability of the device.

[0024] One end of the rotating rod is fixedly connected to a first synchronous pulley 5, one end of the left and right threaded rod 8 extends outside one of the mounting plates 11 and is rotatably connected to the mounting plate 11, one end of the left and right threaded rod 8 is fixedly connected to a second synchronous pulley 7, and a synchronous belt 6 is jointly sleeved on the first synchronous pulley 5 and the second synchronous pulley 7.

[0025] Through the above technical solution, the first synchronous pulley 5, the second synchronous pulley 7, and the synchronous belt 6 are transmission components, so that the rotation of the output shaft of the motor 4 can drive the forward and reverse threaded rod 8 to rotate.

[0026] On one side of the two mounting plates 11, the same sliding rod 12 is fixedly connected. The two ends of the sliding rod 12 respectively penetrate through the corresponding fixture body 9 and are slidably connected to the corresponding fixture body 9.

[0027] Through the above technical solution, the sliding rod 12 plays a role in supporting and fixing the two fixture bodies 9, and can assist the two fixture bodies 9 to translate when the two fixture bodies 9 are translated.

[0028] An annular slideway 18 is fixedly connected inside the equipment load-bearing platform 1. A plurality of support feet 20 are slidably connected to the top of the annular slideway 18. A connecting ring 21 is fixedly connected to each of the plurality of support feet 20. The plurality of support feet 20 and the connecting ring 21 are both fixedly connected to the bridge pier 25.

[0029] Through the above technical solution, the plurality of support feet 20 play a role in supporting the bridge pier 25.

[0030] Two fixed seats 23 are fixedly connected to the top of the equipment load-bearing platform 1. One end of each of the two fixed seats 23 is fixedly connected with a corresponding traction device 24. Two traction cables 22 are sleeved on the connecting ring 21. The two traction devices 24 are respectively connected to the corresponding traction cables 22.

[0031] Through the above technical solution, the cooperation of the two traction devices 24 and the two traction cables 22 can make the bridge pier 25 rotate.

[0032] The bottom of the lower seat plate 3 is fixedly connected with a positioning steel frame 2, and a plurality of support frames 19 are fixedly connected to the bottom of the annular slideway 18.

[0033] Through the above technical solution, the plurality of support frames 19 play a role in supporting the annular slideway 18, and the positioning steel frame 2 plays a role in supporting the lower seat plate 3.

[0034] The implementation principle of a bridge rotation limiting device in the embodiment of the present application is as follows:

[0035] During use, the operator fixedly installs the spherical hinge mechanism and the slideway mechanism inside the equipment load-bearing platform 1, then fixedly connects the bridge pier 25 with the spherical hinge mechanism and the slideway mechanism. Subsequently, the tractor 24 is started. The tractor 24 pulls the traction cable 22 to make the connecting ring 21 rotate. The rotation of the connecting ring 21 drives the bridge pier 25 to rotate. When the bridge pier 25 rotates to the specified position, the motor 4 is started. The output shaft of the motor 4 rotates to drive the first synchronous pulley 5 to rotate. The rotation of the first synchronous pulley 5 drives the synchronous belt 6 to rotate. The rotation of the synchronous belt 6 drives the second synchronous pulley 7 to rotate. The rotation of the second synchronous pulley 7 drives the left-right threaded rod 8 to rotate. The rotation of the left-right threaded rod 8 drives the two fixture bodies 9 to translate inward to clamp and limit the upper spherical hinge 15, completing the limiting operation.

[0036] The above-mentioned embodiments are only the preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A bridge rotation limiting device, characterized in that, Including: An equipment bearing platform, in which a lower seat plate is fixedly connected. A motor is fixedly connected to the top of the lower seat plate. Two mounting plates are fixedly connected to the top of the lower seat plate. A rotating rod is fixedly connected to the output shaft of the motor. One end of the rotating rod penetrates through one of the mounting plates and is rotatably connected to one of the mounting plates. A left - right threaded rod is rotatably connected between the two mounting plates. The motor is in transmission connection with the left - right threaded rod. Two fixture bodies are threadedly connected to the left - right threaded rod. A corresponding limit pin is fixedly connected to one side of each of the two fixture bodies. A lower ball joint is fixedly connected to the top of the lower seat plate. A central rotating shaft steel bar is installed in the lower ball joint. An upper ball joint is installed on the top of the lower ball joint. A plurality of limit holes are formed in the upper ball joint. The limit pin is adapted to the limit hole. An upper seat plate is fixedly connected to the top of the upper ball joint. A bridge pier is fixedly connected to the top of the upper seat plate.

2. The bridge rotation limiting device according to claim 1, characterized in that, A first synchronous pulley is fixedly connected to one end of the rotating rod. One end of the left - right threaded rod extends outside one of the mounting plates and is rotatably connected to the mounting plate. A second synchronous pulley is fixedly connected to one end of the left - right threaded rod. A synchronous belt is sleeved on the first synchronous pulley and the second synchronous pulley together.

3. The bridge rotation limiting device according to claim 1, characterized in that, The same slide bar is fixedly connected to one side of each of the two mounting plates. The two ends of the slide bar respectively penetrate through the corresponding fixture body and are slidably connected to the corresponding fixture body.

4. The bridge rotation limiting device according to claim 1, characterized in that, An annular slideway is fixedly connected inside the equipment bearing platform. A plurality of support feet are slidably connected to the top of the annular slideway. A connecting ring is fixedly connected to each of the plurality of support feet. The plurality of support feet and the connecting rings are all fixedly connected to the bridge pier.

5. The bridge rotation limiting device according to claim 4, characterized in that, Two fixed seats are fixedly connected to the top of the equipment bearing platform. A corresponding tractor is fixedly connected to one end of each of the two fixed seats. Two traction cables are sleeved on the connecting ring. Each of the two tractors is connected to the corresponding traction cable.

6. The bridge rotation limiting device according to claim 4, wherein A positioning steel frame is fixedly connected to the bottom of the lower seat plate. A plurality of support frames are fixedly connected to the bottom of the annular slideway.

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