Temporary wind-resistant device for fixing tower beams in cantilever erection of large-span steel structure bridges

Abstract

The present invention relates to the technical field of temporary fixing devices for bridges, and discloses a wind-resistant device for temporary fixing of cantilevered tower beams of large-span steel structure bridges. The present invention comprises: a connecting plate, two plywoods are slidably installed on the connecting plate, a telescopic mechanism is installed on one side of the connecting plate, and a binding mechanism is installed on the telescopic mechanism; the telescopic mechanism comprises two sleeves fixedly installed on one side of the connecting plate, telescopic rods are slidably installed in the two sleeves, a first motor and an internal threaded pipe are installed between the two sleeves, the first motor is connected to the internal threaded pipe for transmission, and a screw is installed on the internal thread of the internal threaded pipe; the binding mechanism comprises a hollow pad fixedly installed on one end of the two telescopic rods, and a shell is fixedly installed on one side of the hollow pad. The present invention can achieve the fixing of the tower body of the crane and the tower beam of the bridge without drilling holes on the tower beam, thereby making the fixing work of the two simpler and more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of temporary fixing devices for bridges, and in particular to a temporary wind-resistant fixing device for cantilevered tower beams of large-span steel structure bridges. Background Art

[0002] When constructing large-span steel structure bridges, the cantilever of the bridge is generally erected on the bridge tower beam by a tower crane. When the tower crane is too high, it is easy to shake due to the influence of wind, which not only poses a hidden danger of collapse, but also is not conducive to precise construction. This also leads to the fact that when the bridge is being erected, the tower crane is generally adjacent to the tower beam of the bridge, and the two are temporarily fixed together by a connecting arm to support each other to achieve the purpose of wind resistance.

[0003] However, the connecting arm used to connect the tower crane and the tower beam is generally fixed to the two by bolts, and there are no screw holes on the tower beam. This requires drilling holes in the tower beam when installing the connecting arm between the two. This will not only cause certain damage to the tower beam, but it is also inconvenient to perform the drilling work at high altitudes. Therefore, it is necessary to propose a temporary wind-resistant measure device for fixing the cantilever tower beam of a large-span steel structure bridge. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a device for temporarily fixing wind-resistant connections of cantilevered tower beams of large-span steel structure bridges.

[0005] The present invention is implemented by the following technical solution: a connecting plate, two clamping plates are slidably mounted on the connecting plate, a telescopic mechanism is mounted on one side of the connecting plate, and a binding mechanism is mounted on the telescopic mechanism;

[0006] The telescopic mechanism includes two sleeves fixedly mounted on one side of the connecting plate, a telescopic rod is slidably mounted in each sleeve, a first motor and an internally threaded tube are mounted between the two sleeves, the first motor is transmission-connected to the internally threaded tube, and a screw is mounted on the internal thread of the internally threaded tube;

[0007] The binding mechanism includes a hollow pad fixedly installed at one end of the two telescopic rods, a shell fixedly installed on one side of the hollow pad, one end of the screw is fixedly connected to the shell, the bottom of the two telescopic rods is fixedly installed with the same connecting frame, a second motor is installed on the connecting frame, a winding roller is rotatably installed in the shell, the top and bottom ends of the winding roller both extend outside the shell, the second motor is connected to the winding roller for transmission, a strap is wrapped around the winding roller, and the other end of the strap extends outside the hollow pad.

[0008] The connecting plate and the two clamping plates are provided with a plurality of screw holes distributed in a rectangular shape;

[0009] One end of the binding belt is fixedly installed with a hook, and one end of the hollow pad is fixedly installed with a buckle, and the hook is adapted to the buckle.

[0010] As a further improvement of the above solution, a frame tube and a support frame are fixedly mounted on the two sleeves, the internal threaded tube passes through the frame tube and the support frame and is rotatably connected to the two, and the first motor is fixedly connected to the inner wall of the frame tube.

[0011] As a further improvement of the above scheme, a first bevel gear is fixedly installed on the output shaft of the first motor, a second bevel gear is fixedly provided on the internal threaded tube, and the first bevel gear is meshed with the second bevel gear. A third bevel gear is fixedly installed on the output shaft of the second motor, and a fourth bevel gear is fixedly provided on the winding roller, and the third bevel gear is meshed with the fourth bevel gear.

[0012] As a further improvement of the above solution, a long sliding opening is opened on the inner wall of one side of the sleeve, a limiting block is fixedly installed on one side of the telescopic rod, and one side of the limiting block passes through the long sliding opening and is slidably connected to the long sliding opening.

[0013] As a further improvement of the above solution, the same hanger is fixedly mounted on the two sleeves.

[0014] As a further improvement of the above solution, four sliding shafts are rotatably installed in the hollow pad, and both sides of the strap are in contact with the four sliding shafts respectively.

[0015] As a further improvement of the above scheme, a frame is fixedly installed on the connecting frame, a third motor is fixedly installed on the top of the frame, a lock is rotatably installed on the connecting frame and the frame, the output shaft of the third motor is fixedly connected to the connecting shaft of the lock, and a locking gear is fixedly sleeved on the winding roller.

[0016] As a further improvement of the above solution, the binding belt is formed by arranging multiple steel wire ropes, and the multiple steel wire ropes are bound together by rubber sleeves.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention cooperates with the connecting plate and the clamping plate so that the entire fixing device can be connected to the tower body of the tower crane by bolts, and the distance between the two clamping plates can be adjusted, which makes it suitable for tower bodies of different widths.

[0019] The position of the binding mechanism can be adjusted through the telescopic mechanism composed of a sleeve, a telescopic rod, a first motor, an internal threaded tube and a screw, so that the length of the fastening device can be adjusted according to the distance between the tower crane and the bridge tower beam, so that the fastening device can better meet different situations.

[0020] The binding mechanism composed of a hollow pad, a second motor, a winding roller and a binding belt can realize the connection and fixation of the tower beam by binding. Compared with the transmission fastening device, it does not need to punch holes on the tower beam, so it will not cause damage to the tower beam, and it also avoids the tediousness of high-altitude drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a left-side structural schematic diagram of a temporary wind-resistant device for fixing tower beams to cantilevered towers of a large-span steel structure bridge according to the present invention;

[0022] Figure 2 This is a schematic structural diagram from the right side of the present invention of a temporary wind-resistant device for fixing tower beams to cantilevered towers of a large-span steel structure bridge;

[0023] Figure 3 This is a side cross-sectional structural diagram of a temporary wind-resistant device for fixing tower beams to cantilevered towers of a large-span steel structure bridge according to the present invention;

[0024] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part A;

[0025] Figure 5 The present invention is a schematic top view of the cross-sectional structure of a temporary wind-resistant device for fixing the tower beam of a cantilevered long-span steel structure bridge.

[0026] Description of main symbols:

[0027] 1. Connecting plate; 2. Clamping plate; 3. Sleeve; 4. Telescopic rod; 5. Hollow pad; 6. Frame tube; 7. First motor; 8. First bevel gear; 9. Internally threaded tube; 10. Second bevel gear; 11. Screw; 12. Housing; 13. Connecting frame; 14. Second motor; 15. Third bevel gear; 16. Winding roller; 17. Fourth bevel gear; 18. Strap; 19. Hook; 20. Buckle; 21. Frame; 22. Third motor; 23. Lock; 24. Locking gear. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] Please combine Figures 1 to 5 The temporary wind-resistant device for fixing the cantilever tower beam of a large-span steel structure bridge of this embodiment includes: a connecting plate 1, two clamping plates 2 are slidably mounted on the connecting plate 1, a telescopic mechanism is mounted on one side of the connecting plate 1, and a binding mechanism is mounted on the telescopic mechanism;

[0030] The telescopic mechanism includes two sleeves 3 fixedly mounted on one side of the connecting plate 1, and a telescopic rod 4 is slidably mounted in each sleeve 3. A first motor 7 and an internally threaded tube 9 are mounted between the two sleeves 3. The first motor 7 is transmission-connected to the internally threaded tube 9, and a screw 11 is mounted on the internal thread of the internally threaded tube 9.

[0031] The binding mechanism includes a hollow pad 5 fixedly mounted on one end of the two telescopic rods 4, a shell 12 fixedly mounted on one side of the hollow pad 5, one end of the screw 11 is fixedly connected to the shell 12, and the bottom of the two telescopic rods 4 is fixedly mounted with the same connecting frame 13, and a second motor 14 is mounted on the connecting frame 13. A winding roller 16 is rotatably mounted in the shell 12, and the top and bottom ends of the winding roller 16 extend to the outside of the shell 12. The second motor 14 is transmission-connected to the winding roller 16, and a strap 18 is wrapped around the winding roller 16, and the other end of the strap 18 extends to the outside of the hollow pad 5.

[0032] The connecting plate 1 and the two clamping plates 2 are provided with a plurality of screw holes distributed in a rectangular shape.

[0033] Through the above technical solution, the screw holes allow the connecting plate 1 and the clamping plate 2 to be connected to the tower body of the tower crane by screws, and the two clamping plates 2 can also improve the stability of the connection between the fixing device and the tower body.

[0034] The frame tube 6 and the support frame are fixedly mounted on the two sleeves 3 . The internal threaded tube 9 passes through the frame tube 6 and the support frame and is rotatably connected to the two. The first motor 7 is fixedly connected to the inner wall of the frame tube 6 .

[0035] Through the above technical solution, the frame tube 6 cooperates with the support frame to support the internal threaded tube 9, thereby ensuring the normal rotation of the internal threaded tube 9. At the same time, the frame tube 6 can also serve as a protective shell to isolate and protect the first motor 7.

[0036] A first bevel gear 8 is fixedly mounted on the output shaft of the first motor 7, a second bevel gear 10 is fixedly sleeved on the internal threaded tube 9, and the first bevel gear 8 is meshed with the second bevel gear 10, a third bevel gear 15 is fixedly mounted on the output shaft of the second motor 14, a fourth bevel gear 17 is fixedly sleeved on the winding roller 16, and the third bevel gear 15 is meshed with the fourth bevel gear 17.

[0037] Through the above technical solution, the first bevel gear 8, the second bevel gear 10, the third bevel gear 15 and the fourth bevel gear 17 mainly serve as driving parts for the first motor 7 and the internal threaded tube 9, the second motor 14 and the winding roller 16, so that the first motor 7 and the second motor 14 can also drive the internal threaded tube 9 and the winding roller 16 to rotate when they are in a specific position.

[0038] A long sliding opening is provided on the inner wall of one side of the sleeve 3, and a limiting block is fixedly installed on one side of the telescopic rod 4. One side of the limiting block passes through the long sliding opening and is slidably connected to the long sliding opening.

[0039] Through the above technical solution, the long sliding mouth cooperates with the upper limit block to limit the telescopic rod 4 without restricting the telescopic sliding of the telescopic rod 4, preventing the telescopic rod 4 from detaching from the sleeve 3, thereby ensuring the stability of the entire telescopic mechanism.

[0040] The same hanger is fixedly mounted on the two sleeves 3 .

[0041] Through the above technical solution, the hanger is mainly used to facilitate the tower crane to lift the fixing device, so that the fixing device can be raised to a required height under the drive of the tower crane.

[0042] A hook 19 is fixedly mounted on one end of the binding strap 18 , and a buckle 20 is fixedly mounted on one end of the hollow pad 5 , and the hook 19 is matched with the buckle 20 .

[0043] Through the above technical solution, the hook 19 cooperates with the buckle 20 to allow the strap 18 and the hollow pad 5 to form a closed loop, thereby binding it to the tower beam of the bridge.

[0044] Four sliding shafts are rotatably mounted in the hollow pad 5 , and both sides of the binding belt 18 are in contact with the four sliding shafts respectively.

[0045] Through the above technical solution, the sliding shaft makes it difficult for the strap 18 to be worn when it passes through the hollow pad 5.

[0046] A frame 21 is fixedly mounted on the connecting frame 13, a third motor 22 is fixedly mounted on the top of the frame 21, a lock 23 is rotatably mounted on the connecting frame 13 and the frame 21, the output shaft of the third motor 22 is fixedly connected to the connecting shaft of the lock 23, and a locking gear 24 is fixedly sleeved on the winding roller 16.

[0047] Through the above technical solution, the lock buckle 23 cooperates with the locking gear 24 to limit the winding roller 16, so that the winding roller 16 is not easy to loosen after the binding belt 18 is contracted and connected to the tower beam.

[0048] The binding belt 18 is formed by arranging a plurality of steel wire ropes, and the plurality of steel wire ropes are bound together by rubber sleeves.

[0049] Through the above technical solution, multiple steel wires are arranged into a strap 18, which can increase the contact area between the strap 18 and the tower beam while ensuring stability, thereby improving the binding effect and preventing wear on the tower beam.

[0050] The implementation principle of a temporary wind-resistant device for fixing a cantilever tower beam of a large-span steel structure bridge in the embodiment of the present application is as follows:

[0051] Step 1: When in use, the tower crane hoists the fixing device to a specific height, and then the staff uses bolts to connect and fix the connecting plate 1 and the two clamping plates 2 to the tower body of the tower crane. Then, the first motor 7 is started, and the first motor 7 drives the internal threaded tube 9 to rotate through the first bevel gear 8 and the second bevel gear 10. Subsequently, under the action of the thread, the internal threaded tube 9 drives the screw 11 to move, thereby pushing the binding mechanism until the hollow pad 5 on the binding mechanism contacts the tower beam;

[0052] The second step is to wrap the strap 18 around the tower beam, and then hang the hook 19 on the strap 18 on the buckle 20 to achieve a closed loop. Subsequently, the second motor 14 is started. The second motor 14 drives the third bevel gear 15 to rotate through the output shaft. The third bevel gear 15 drives the winding roller 16 to rotate through the fourth bevel gear 17. Subsequently, the rotating winding roller 16 can recycle the strap 18, so that the strap 18 can be tied tightly to the tower beam, so that the fastening device can be connected to the tower crane and the tower beam without opening a hole in the tower beam, so that the two can rely on each other to achieve the purpose of wind resistance.

[0053] Step 3: Subsequently, the third motor 22 is started, and the third motor 22 drives the lock 23 to rotate through the output shaft, so that the lock 23 is engaged with the locking gear 24 and limits the locking gear 24, thereby completing the limitation of the winding roller 16, so that the fastening device can be more stably bound to the tower beam.

[0054] The above embodiments are only 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 replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A temporary wind-resistant device for fixing the tower beam of a cantilevered long-span steel structure bridge, characterized in that: It comprises: a connecting plate, two clamping plates are slidably mounted on the connecting plate, a telescopic mechanism is mounted on one side of the connecting plate, and a binding mechanism is mounted on the telescopic mechanism; The telescopic mechanism includes two sleeves fixedly mounted on one side of the connecting plate, a telescopic rod is slidably mounted in each sleeve, a first motor and an internally threaded tube are mounted between the two sleeves, the first motor is in transmission connection with the internally threaded tube, and a screw is mounted on the internal thread of the internally threaded tube; The binding mechanism includes a hollow pad fixedly mounted on one end of the two telescopic rods, a shell fixedly mounted on one side of the hollow pad, one end of the screw is fixedly connected to the shell, the bottom of the two telescopic rods is fixedly mounted with the same connecting frame, a second motor is installed on the connecting frame, a winding roller is rotatably mounted in the shell, the top and bottom ends of the winding roller are extended outside the shell, the second motor is transmission-connected to the winding roller, a strap is wrapped around the winding roller, and the other end of the strap extends outside the hollow pad; The connecting plate and the two clamping plates are provided with a plurality of screw holes distributed in a rectangular shape; A hook is fixedly installed at one end of the binding strap, and a buckle is fixedly installed at one end of the hollow pad, and the hook is adapted to the buckle.

2. The device for temporarily fixing the tower beam of a cantilevered long-span steel structure bridge according to claim 1 is characterized in that: A frame tube and a support frame are fixedly mounted on the two sleeves. The internal threaded tube passes through the frame tube and the support frame and is rotatably connected to the two. The first motor is fixedly connected to the inner wall of the frame tube.

3. The device for temporarily fixing the tower beam of a cantilevered long-span steel structure bridge according to claim 1 is characterized in that: A first bevel gear is fixedly mounted on the output shaft of the first motor, a second bevel gear is fixedly sleeved on the internally threaded tube, and the first bevel gear is meshed with the second bevel gear. A third bevel gear is fixedly mounted on the output shaft of the second motor, a fourth bevel gear is fixedly sleeved on the winding roller, and the third bevel gear is meshed with the fourth bevel gear.

4. The device for temporarily fixing the tower beam of a cantilevered long-span steel structure bridge according to claim 1 is characterized in that: A long sliding opening is provided on an inner wall of one side of the sleeve, a limiting block is fixedly installed on one side of the telescopic rod, and one side of the limiting block passes through the long sliding opening and is slidably connected to the long sliding opening.

5. The device for temporarily fixing the tower beam of a cantilevered long-span steel structure bridge according to claim 1 is characterized in that: The same hanger is fixedly mounted on the two sleeves.

6. The device for temporarily fixing the tower beam of a cantilevered long-span steel structure bridge according to claim 1 is characterized in that: Four sliding shafts are rotatably installed in the hollow pad, and two sides of the binding belt are respectively in contact with the four sliding shafts.

7. The device for temporarily fixing the tower beam of a cantilevered long-span steel structure bridge according to claim 1 is characterized in that: A frame is fixedly installed on the connecting frame, a third motor is fixedly installed on the top of the frame, a lock is rotatably installed on the connecting frame and the frame, the output shaft of the third motor is fixedly connected to the connecting shaft of the lock, and a locking gear is fixedly sleeved on the winding roller.

8. The wind-resistant device for temporarily fixing the tower beam of a cantilevered steel structure bridge of a large span as described in claim 1, wherein the binding belt is formed by arranging a plurality of steel wire ropes, and the plurality of steel wire ropes are bound together by rubber sleeves.

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