A bidirectional rotatable traction tooling device for prestressed steel structure construction

Abstract

This invention relates to a bidirectional rotatable traction fixture for prestressed steel structure construction, comprising a fixed plate and a support frame. Two steering blocks and a cable assembly are rotatably connected to the fixed plate, with the cable assembly located between the two steering blocks. Tensioning rods are movably inserted into the ends of both steering blocks, arranged in a parallel left-right configuration. A steel cable is provided at the end of the cable assembly. Three circular holes are opened on the support frame's vertical surface, with two holes for the tensioning rods to pass through and the other hole for the steel cable to pass through. A telescopic mechanism is provided on the support frame, connected to a drive mechanism. Two support shafts are also provided on the telescopic mechanism, connected to the drive mechanism. A linkage mechanism is provided on the support shafts, and synchronous shafts are provided on the two linkage mechanisms. A lifting mechanism is provided on the support frame, connected to a locking mechanism, enabling single-sided or double-sided transmission and ensuring the stability of the component positions after adjustment, preventing arbitrary component movement.

Description

Technical Field

[0001] This invention relates to a bidirectional rotatable traction tooling device for the construction of prestressed steel structures, belonging to the technical field of prestressed steel structure traction tooling devices. Background Technology

[0002] Prestressed steel structures refer to steel structures or components that have been prestressed using specific methods before a load is applied. The stress sign of this prestress is opposite to that of the stress caused by the load. When a load is applied, this ensures the safety and normal use of the structure.

[0003] Prestressed large-span spatial steel structures are a new type of hybrid prestressed large-span spatial steel structure system that incorporates modern prestressing technology into large-span structures such as grid structures, tension structures composed of cables and rods, and three-dimensional truss structures. This type of structure has reasonable stress distribution, high stiffness, light weight, and is relatively easy to manufacture and install, and its application and development prospects are extremely broad.

[0004] As a crucial structural component in prestressed steel structures, cables require specialized construction tools and methods. Traditional tensioning fixtures are only suitable for tensioning curved cables in the vertical plane. However, in engineering practice, for spatial curved cables—that is, bidirectional curved cables both inside and outside the plane—existing fixtures cannot effectively switch between single-sided and simultaneous double-sided traction, hindering rapid traction and fixation. Therefore, improvements are necessary. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, this invention provides a bidirectional rotatable traction tooling device for prestressed steel structure construction, which can achieve single-sided or double-sided transmission and ensure the stability of the component position after adjustment, preventing the component from operating arbitrarily.

[0006] The technical solution of the present invention is as follows:

[0007] A bidirectional rotatable traction fixture for prestressed steel structure construction includes a fixed plate and a support frame. Two steering blocks and a tension cable are rotatably connected to one side of the fixed plate, with the tension cable located between the two steering blocks. Tensioning rods are movably inserted into the ends of both steering blocks, arranged in a parallel left-right configuration. A steel cable is provided at the end of each tension cable. Three circular holes are opened on the support frame's vertical surface, with two holes for the tensioning rods to pass through and the third hole for the steel cable to pass through. A telescopic mechanism is provided on the support frame to drive the tensioning rods, enabling unilateral adjustment or simultaneous adjustment on both sides. The telescopic mechanism is equipped with a drive mechanism for driving its movement. The telescopic mechanism also has two support shafts connected to each other. A linkage mechanism is mounted on each support shaft, and a synchronous shaft is mounted on each of the two linkage mechanisms. The two ends of the synchronous shaft are rotatably sleeved onto opposite sides of the two support shafts. The linkage mechanism is used to link the synchronous shaft and the support shaft. The support frame is equipped with a lifting mechanism, which is connected to a locking mechanism. The lifting mechanism controls the locking mechanism to lock the synchronous shaft. After locking, the locking mechanism drives the synchronous shaft to rotate via a starting device.

[0008] The linkage mechanism includes two mounting brackets installed on both sides of the support frame. A movable screw is slidably installed in the mounting bracket. A first shaft assembly is fixed to one end of the movable screw. A second shaft assembly is rotatably sleeved on the first shaft assembly. The second shaft assembly is slidably sleeved on the synchronous shaft. Both the support shaft and the second shaft assembly are provided with arc-shaped end gears. The two arc-shaped end gears mesh with each other through the sliding movable screw. The movable screw is screwed with a limit nut to make the meshing state stable.

[0009] The lifting mechanism includes a mounting base slidably mounted on a support frame, a drive screw component rotatably sleeved on the support frame, a threaded sleeve screwed onto the drive screw component, a pull rod rotatably hinged to the threaded sleeve, and the other end of the pull rod rotatably hinged to the side wall of the mounting base.

[0010] The locking mechanism includes two arc-shaped internal gear rings fixed on both sides of the mounting base. Both arc-shaped internal gear rings are located at the lower end of the synchronous shaft. First gear components are fixedly mounted on both ends of the synchronous shaft. The two arc-shaped internal gear rings are moved up by the lifting mechanism to mesh with the two first gear components respectively.

[0011] The telescopic mechanism includes adjusting frames at both ends of the support frame. The tension rod passes through the adjusting frames, and a sleeve is fixed to one end of each adjusting frame. The tension rod passes through the sleeve, and a ring is abutted at the other end of the sleeve. The tension rod and the ring are fixedly connected. A lead screw is fixed to one side of the ring, and a limiting mechanism is provided on the lead screw. A lead screw nut is screwed onto the lead screw, and the lead screw nut is rotatably sleeved on the outside of the sleeve. A second gear is fixedly fitted outside the lead screw nut, and a hollow worm gear is rotatably sleeved on the sleeve. Multiple teeth are arranged in a circumferential array on the inner wall of the hollow worm gear, and the multiple teeth mesh with the second gear. The drive mechanism pushes the lead screw, causing the ring to move the tension rod.

[0012] The drive mechanism includes a connecting frame mounted on the sleeve, a support shaft rotatably sleeved on the connecting frame, a worm gear fixedly mounted on the support shaft, the worm gear meshing with a hollow worm wheel, and the hollow worm wheel driving the second gear through the worm gear.

[0013] The limiting mechanism includes a positioning screw threaded onto the lead screw, the other end of which is fixed to a support frame. A positioning nut is screwed onto the positioning screw, which can cooperate with the positioning screw to fix the lead screw.

[0014] The starting device includes a rotating wheel component that is rotatably sleeved on the mounting base. Both the lower end of the rotating wheel component and the synchronous shaft are fixed with bevel gears. The two bevel gears mesh with each other, and the synchronous shaft is driven to rotate by rotating the rotating wheel component in coordination with the meshing of the two bevel gears.

[0015] The two steering blocks and the cable are rotatably connected to the fixed plate via pins.

[0016] The support frame is a T-shaped frame structure, which is assembled from two steel plates, one above the other.

[0017] The present invention has the following beneficial effects:

[0018] This device, through the cooperation of the moving screw and the limiting nut, facilitates the control of whether the two arc-shaped end gears on the same side are engaged according to the actual situation. When the two arc-shaped end gears on the same side are engaged, power can be transmitted. When the two arc-shaped end gears are not engaged, power is not transmitted, so as to control the operation of the components on either side or make the components on both sides operate synchronously as needed.

[0019] This device uses the rotation of the synchronous shaft to drive the worm gear, which in turn drives the hollow worm wheel to rotate. The rotation of the hollow worm wheel causes the second gear to push the lead screw forward or backward. The movement of the lead screw causes the ring to pull the tension rod to move, enabling single-sided or double-sided synchronous adjustment. Furthermore, the adjusted position can be effectively fixed by the positioning screw.

[0020] This device controls the threaded sleeve through the drive screw component to pull the mounting base to rise and fall. The rising and falling of the mounting base can separate the arc-shaped internal gear ring and the first gear component, so that the synchronous shaft can rotate as needed.

[0021] This device uses two bevel gears to enable the rotating wheel to drive the synchronous shaft, which in turn enables the synchronous shaft to drive the corresponding components to operate, and allows for easy adjustment of the position on one or both sides.

[0022] In summary, this invention can achieve single-sided or double-sided transmission through corresponding components, and can ensure the stability of the component position after adjustment, avoid random operation of components, and enable the tooling to switch and use for either single-sided traction or simultaneous double-sided traction, so as to quickly complete the tooling installation. Attached Figure Description

[0023] Figure 1 This is a structural diagram of a bidirectional rotatable traction tooling device for prestressed steel structure construction proposed in this invention.

[0024] Figure 2 This is an enlarged view of point A of a bidirectional rotatable traction tooling device for prestressed steel structure construction proposed in this invention.

[0025] Figure 3 This is an enlarged view of section B of a bidirectional rotatable traction tooling device for prestressed steel structure construction proposed in this invention.

[0026] Figure 4 This is an enlarged view of point C of a bidirectional rotatable traction tooling device for prestressed steel structure construction proposed in this invention.

[0027] Figure 5 This is a structural diagram of the hollow worm gear component of a bidirectional rotatable traction tooling device for prestressed steel structure construction proposed in this invention.

[0028] The reference numerals in the figure are as follows:

[0029] 1. Fixed plate; 2. Cable assembly; 3. Steering block; 4. Support frame; 5. Positioning screw; 6. Positioning nut; 7. Steel cable; 8. Tensioning rod; 9. Adjusting frame; 10. Worm gear; 11. Hollow worm gear assembly; 12. Ring assembly; 13. Sleeve assembly; 14. Arc-shaped end gear disc; 15. Second shaft assembly; 16. Moving screw; 17. Limit nut; 18. Mounting bracket; 19. First shaft assembly; 20. Synchronous shaft; 21. First gear assembly; 22. Arc-shaped internal gear ring; 23. Rotating wheel assembly; 24. Bevel gear; 25. Mounting base; 26. Tie rod; 27. Drive screw assembly; 28. Threaded sleeve; 29. ​​Support shaft; 30. Connecting bracket; 31. Lead screw; 32. Second gear assembly; 33. Gear teeth. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0031] Please see Figures 1 to 5 The invention provides a technical solution:

[0032] A bidirectional rotatable traction fixture for prestressed steel structure construction includes a fixed plate 1 and a support frame 4. Two steering blocks 3 and a cable component 2 are rotatably connected to one side of the fixed plate 1 via pins. The cable component 2 is located between the two steering blocks 3. Tensioning rods 8 are movably inserted into the ends of both steering blocks 3; that is, the steering blocks 3 and tensioning rods 8 are not fixed. The tensioning rods 8 are inserted into the steering blocks 3, and the angle can be adjusted by adjusting the length of the two tensioning rods 8 extending into the two steering blocks 3. The two tensioning rods 8 are arranged in a parallel configuration. A steel cable 7 is connected to the end of the cable component 2. Three circular holes are opened on the vertical surface of the support frame 4. The two end holes are through which the tensioning rods 8 pass, and the middle hole is through which the steel cable 7 passes. The support frame 4 is a T-shaped frame structure, assembled from two upper and lower steel plates. A telescopic mechanism is installed on the support frame 4, which is used to... The movable tension rod 8 is used to achieve single-sided adjustment or double-sided synchronous adjustment; the telescopic mechanism is connected to a drive mechanism for driving the telescopic mechanism to move, and the telescopic mechanism is also provided with two opposing support shafts 29. The drive mechanism and the support shafts 29 are connected, and the support shafts 29 are provided with a linkage mechanism. The two linkage mechanisms are provided with a synchronous shaft 20. The two ends of the synchronous shaft 20 are rotatably sleeved on the opposing side of the two support shafts 29, that is, a synchronous shaft 20 is rotatably connected between the two support shafts 29. The linkage mechanism is used to link the synchronous shaft 20 and the support shafts 29; the support frame 4 is provided with a lifting mechanism, and the lifting mechanism is connected to a locking mechanism. The lifting mechanism is used to control the locking mechanism to complete the locking of the synchronous shaft 20. After the locking mechanism is locked, it drives the synchronous shaft 20 to rotate through the starting device. The telescopic mechanism is also provided with a limit mechanism for fixing the device after adjustment.

[0033] The linkage mechanism includes two mounting brackets 18 installed on both sides of the support frame 4. A movable screw 16 is slidably installed in the mounting bracket 18. A first shaft assembly 19 is fixed to one end of the movable screw 16. A second shaft assembly 15 is rotatably sleeved on the first shaft assembly 19. The second shaft assembly 15 is slidably sleeved on the synchronous shaft 20. Both the support shaft 29 and the second shaft assembly 15 are provided with arc-shaped end gears 14. When the movable screw 16 is slidably moved on the mounting bracket 18, it will drive the first shaft assembly 19 and the second shaft assembly 15 to move on the synchronous shaft 20. At this time, the arc-shaped end gears 14 connected to the second shaft assembly 15 will move synchronously until they mesh and fix with the tooth ends of the arc-shaped end gears 14 on the support shaft 29. The linkage between the synchronous shaft 20 and the support shaft 29 can be realized. Then, by screwing a limit nut 17 on the movable screw 16, the limit nut 17 is rotated to abut against the mounting bracket 18 to make the meshing state stable.

[0034] The lifting mechanism includes a mounting base 25 slidably mounted on the support frame 4. The mounting base 25 can move up and down relative to the support frame 4. The mounting base 25 is positioned in the middle of the support frame 4, that is, at the middle of the synchronous shaft 20. A drive screw 27 is rotatably sleeved on the front side wall of the support frame 4. A threaded sleeve 28 is screwed onto the drive screw 27. A pull rod 26 is rotatably hinged to the threaded sleeve 28. The other end of the pull rod 26 is rotatably hinged to the side wall of the mounting base 25. The rotation direction is up and down. By rotating the drive screw 27, the threaded sleeve 28 moves back and forth with the drive screw 27, thereby pulling the pull rod 26 and raising or lowering the mounting base 25.

[0035] The locking mechanism includes two arc-shaped internal gear rings 22 fixed on both sides of the mounting base 25. In the initial state, both arc-shaped internal gear rings 22 are located at the lower end of the synchronous shaft 20. Both ends of the synchronous shaft 20 are fixedly fitted with first gear components 21. The position of the first gear components 21 corresponds to the two arc-shaped internal gear rings 22. As described above, under the action of the pull rod 26, the mounting base 25 rises and falls, which simultaneously drives the arc-shaped internal gear rings 22 on both sides to rise and fall, so that they can mesh or separate with the first gear components 21 on the synchronous shaft 20.

[0036] The telescopic mechanism includes adjusting frames 9 at both ends of the support frame 4. A tension rod 8 passes through the adjusting frames 9. A sleeve 13 is fixed to the front end of each adjusting frame 9. The tension rod 8 passes through the sleeve 13, and the other end of the sleeve 13 abuts against a ring 12. The tension rod 8 and the ring 12 are fixedly connected, meaning the inner wall of the ring 12 fits against the outer wall of the tension rod 8. A lead screw 31 is fixed to one side of the ring 12. A limiting mechanism is provided on the lead screw 31 to restrict the movement of the telescopic mechanism. A lead screw nut is screwed onto the lead screw 31. The lead screw nut is rotatably sleeved on the outside of the sleeve 13. The second gear 32 is fixedly sleeved on the outside of the lead screw nut. The hollow worm gear 11 is rotatably sleeved on the sleeve 13. The inner wall of the hollow worm gear 11 is provided with multiple teeth 33 arranged in a circumferential array. The multiple teeth 33 mesh with the second gear 32. The lead screw 31 is driven to move through the drive mechanism, and then the ring 12 drives the tension rod 8 to move. The angle of the fixed plate 1 can be adjusted by pulling the steering block 3 through the tension rod 8. At the same time, traction can also be achieved by adjusting the two tension rods 8.

[0037] The drive mechanism includes a connecting frame 30 mounted on the sleeve 13, a support shaft 29 rotatably sleeved on the connecting frame 30, and a worm 10 fixedly mounted on the support shaft 29. The worm 10 meshes with the outer wall of the hollow worm gear 11. When the support shaft 29 rotates, the worm 10 rotates synchronously, which drives the meshing hollow worm gear 11 to rotate. Since the second gear 32 meshes with the teeth 33 on the inner wall of the hollow worm gear 11, it drives the second gear 32 to rotate. At this time, the lead screw nut rotates, and the lead screw 31 is driven to move due to its screw connection with the lead screw nut, which pushes the ring 12 forward. At the same time, the tension rod 8 fixedly connected to the ring 12 is pushed.

[0038] The limiting mechanism includes a positioning screw 5 threaded onto the lead screw 31. The other end of the positioning screw 5 passes through the adjusting frame 9 and is fixed to the load-bearing frame 4. A positioning nut 6 is screwed onto the positioning screw 5. When the tension rod 8 completes the displacement under the action of the lead screw 31, the lead screw 31 is fixed by the positioning nut 6 cooperating with the positioning screw 5.

[0039] The starting device includes a rotating wheel 23 rotatably sleeved on the mounting base 25. Both the lower end of the rotating wheel 23 and the synchronous shaft 20 are fixed with bevel gears 24. The two bevel gears 24 mesh with each other. Rotating the rotating wheel 23 in conjunction with the meshing of the two bevel gears 24 drives the synchronous shaft 20 to rotate. The rotating wheel 23 is similar to a car steering wheel. Rotating the rotating wheel 23 drives the bevel gears 24 at its bottom to rotate, which in turn rotates the bevel gears 24 fixed on the synchronous shaft 20, thus driving the synchronous shaft 20 to rotate. When the two bevel gears 24 are meshing, the traction direction can be adjusted by controlling the rotation direction of the rotating wheel 23.

[0040] The working principle of the bidirectional rotatable traction tooling device for prestressed steel structure construction described above is as follows:

[0041] In use, the operator controls the limit nut 17 to drive the moving screw 16, causing the first shaft assembly 19 to drive the second shaft assembly 15 to move along the direction of the synchronous shaft 20. This controls whether the two arc-shaped end gear discs 14 on the same side mesh with each other. When the two arc-shaped end gear discs 14 on the same side mesh with each other, stable transmission can be achieved. At the same time, the operator drives the threaded sleeve 28 through the drive screw 27, causing the pull rod 26 to pull the mounting base 25 up and down. When the mounting base 25 is rising and falling, it controls the arc-shaped internal gear ring 22 and... Whether the first gear component 21 is engaged or not, when the arc-shaped internal gear ring 22 and the first gear component 21 are engaged, the synchronous shaft 20 is fixed and cannot rotate. When the arc-shaped internal gear ring 22 and the first gear component 21 are not engaged, the rotating wheel component 23 can drive the synchronous shaft 20 to rotate through the two bevel gears 24, which can drive the support shaft 29 to drive the worm gear 10, which can drive the hollow worm gear component 11 to drive the tooth pressure 33, which can drive the second gear component 32 to rotate, which can push the lead screw 31 to drive the ring component 12 to move the tension rod 8, and can fix the position of the positioning screw 5 through the positioning nut 6.

[0042] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A bidirectional rotatable traction tooling device for prestressed steel structure construction, characterized in that: The system includes a fixed plate (1) and a support frame (4). Two steering blocks (3) and a cable member (2) are rotatably connected to one side of the fixed plate (1). The cable member (2) is located between the two steering blocks (3). Tension rods (8) can be movably inserted into the ends of the two steering blocks (3). The two tension rods (8) are arranged in a parallel manner from left to right. A steel cable (7) is provided at the end of the cable member (2). Three round holes are opened on the vertical surface of the support frame (4). Two of the round holes are used for the tension rods (8) to pass through, and the other round hole can be used for the cable member (8) to pass through. Steel cable (7); The support frame (4) is provided with a telescopic mechanism, which is used to drive the tension rod (8) to move, and to realize single-sided adjustment or double-sided synchronous adjustment; The telescopic mechanism is connected to a drive mechanism for driving the telescopic mechanism to move, and the telescopic mechanism is also provided with two support shafts (29), the drive mechanism and the support shafts (29) are connected, the support shafts (29) are provided with a linkage mechanism, the two linkage mechanisms are provided with a synchronous shaft (20), the two ends of the synchronous shaft (20) are rotatably sleeved on the opposite side of the two support shafts (29), the linkage mechanism is used to link the synchronous shaft (20) and the support shaft (29); The support frame (4) is provided with a lifting mechanism, the lifting mechanism is connected with a locking mechanism, the lifting mechanism is used to control the locking mechanism to complete the locking of the synchronous shaft (20), and after the locking mechanism is locked, it is used to drive the synchronous shaft (20) to rotate through the starting device; The linkage mechanism includes two mounting brackets (18) installed on both sides of the support frame (4), and a moving screw is slidably installed in the mounting bracket (18). 16), one end of the moving screw (16) is fixed with a first shaft assembly (19), a second shaft assembly (15) is rotatably sleeved on the first shaft assembly (19), the second shaft assembly (15) is slidably sleeved on the synchronous shaft (20), and both the support shaft (29) and the second shaft assembly (15) are provided with arc-shaped end gears (14); the two arc-shaped end gears (14) mesh with each other through the sliding moving screw (16), and the moving screw (16) is screwed with a limit nut (17) to make the meshing state stable;The telescopic mechanism includes adjusting frames (9) at both ends of the support frame (4), the tension rod (8) passes through the adjusting frame (9), and a sleeve (13) is fixed to one end of each of the two adjusting frames (9). The tension rod (8) passes through the sleeve (13), and the other end of the sleeve (13) abuts against a ring (12). The tension rod (8) and the ring (12) are fixedly connected. A lead screw (31) is fixed to one side of the ring (12). A limiting mechanism is provided on the lead screw (31), and a lead screw nut is screwed onto the lead screw (31). The lead screw nut is rotatably sleeved on the outside of the sleeve (13), and a second gear (32) is fixedly sleeved on the outside of the lead screw nut. A hollow worm gear component (11) is rotatably sleeved on the sleeve component (13). Multiple teeth (33) are arranged in a circumferential array on the inner wall of the hollow worm gear component (11). The multiple teeth (33) mesh with the second gear component (32). A drive mechanism pushes a lead screw (31) to cause the ring component (12) to move the tension rod (8). The drive mechanism includes a connecting frame (30) mounted on the sleeve component (13). A support shaft (29) is rotatably sleeved on the connecting frame (30). A worm (10) is fixedly mounted on the support shaft (29). The worm (10) meshes with the hollow worm gear component (11), and the worm (10) causes the hollow worm gear component (11) to drive the second gear component (32).

2. The bidirectional rotatable traction tooling device for prestressed steel structure construction as described in claim 1, characterized in that: The lifting mechanism includes a mounting base (25) slidably mounted on a support frame (4), a drive screw (27) rotatably sleeved on the support frame (4), a threaded sleeve (28) screwed onto the drive screw (27), a pull rod (26) rotatably hinged to the threaded sleeve (28), and the other end of the pull rod (26) rotatably hinged to the side wall of the mounting base (25).

3. The bidirectional rotatable traction tooling device for prestressed steel structure construction as described in claim 2, characterized in that: The locking mechanism includes two arc-shaped internal gear rings (22) fixed on both sides of the mounting base (25). Both arc-shaped internal gear rings (22) are located at the lower end of the synchronous shaft (20). Both ends of the synchronous shaft (20) are fixedly fitted with first gear components (21). The two arc-shaped internal gear rings (22) are moved up by the lifting mechanism to mesh with the two first gear components (21) respectively.

4. The bidirectional rotatable traction tooling device for prestressed steel structure construction as described in claim 1, characterized in that: The limiting mechanism includes a positioning screw (5) threaded onto the lead screw (31), the other end of which is fixed to the support frame (4), and a positioning nut (6) is screwed onto the positioning screw (5), which can cooperate with the positioning screw (5) to fix the lead screw (31).

5. The bidirectional rotatable traction tooling device for prestressed steel structure construction as described in claim 3, characterized in that: The starting device includes a rotating wheel (23) rotatably sleeved on the mounting base (25). The lower end of the rotating wheel (23) and the synchronous shaft (20) are both fixed with bevel gears (24). The two bevel gears (24) mesh with each other, and the synchronous shaft (20) is driven to rotate by rotating the rotating wheel (23) in conjunction with the meshing of the two bevel gears (24).

6. The bidirectional rotatable traction tooling device for prestressed steel structure construction as described in claim 1, characterized in that: Both steering blocks (3) and cable components (2) are rotatably connected to the fixed plate (1) via pins.

7. The bidirectional rotatable traction tooling device for prestressed steel structure construction as described in claim 1, characterized in that: The support frame (4) is a T-shaped frame structure, which is assembled from two steel plates.

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