Stay cable steel strand installation device

Abstract

The application discloses a cable-stayed cable steel strand installation device, and a multi-point synchronous clamping assembly comprises a clamping box body, a piston, an arc-shaped clamping block and multiple guide cross pipes. Multiple groups of steel strands pass through guide cross pipes and conical holes of three groups of multi-point synchronous clamping assemblies in sequence, a driving assembly drives pistons of the first group and the third group of multi-point synchronous clamping assemblies to move in the direction towards the conical hole in the active space, so as to clamp the steel strands. After the pushing assembly drives the first group of multi-point synchronous clamping assemblies to move by a certain distance, the steel strands are released and returned to the initial position, at this time, the second group of multi-point synchronous clamping assemblies clamps the steel strands to stabilize the position of the steel strands. The above-mentioned actions are repeated, so that the multiple groups of steel strands are synchronously driven, the steel strand installation efficiency is high, the multiple groups of steel strands are beneficial to moving along the center axis of the cable guide pipe at the same time, the steel strands are avoided from being untwisted, and the steel strands are beneficial to being quickly and stably installed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge construction, in particular to a stay cable steel strand installation device. BACKGROUND

[0002] In a long-span cable-stayed bridge project, the stay cable is a core load-bearing component, and its construction quality directly affects the overall safety and durability of the bridge. The stay cable is usually composed of multiple parallel steel strands. Due to the large size of the steel strands and the long length of the strands, the installation process requires the use of a special cable threading structure to achieve precise positioning and tensioning. Therefore, efficient and reliable steel strand installation technology is a key link in the construction of cable-stayed bridges.

[0003] In the prior art, various solutions have been proposed for the installation of stay cable steel strands. For example, Chinese patent application CN117344640A discloses a bridge stay cable installation structure and construction process. By setting a fixed circular pipe, a movable anchor and a driving mechanism, the position adjustment during steel strand installation is achieved, reducing the probability of kinking during the movement of the steel strands and improving the installation efficiency to some extent. Chinese patent application CN115976931A describes a stay cable steel strand threading and tensioning anchoring device and construction method. By coordinating the fixed cableway, traction rope and support plate in the traction system with the anchor, temporary tool anchor and tensioning pedestal in the tensioning anchoring system, the cable threading precision and stress uniformity during tensioning are improved. The use of a pilot rod and a pilot cable avoids the misalignment problem during steel strand threading and anchoring, and has the characteristics of simple structure and flexible operation.

[0004] However, the above-mentioned prior art can only complete the installation of a single set of steel strands at a time. When faced with a stay cable composed of multiple sets of steel strands, repeated installation operations are required, resulting in low overall construction efficiency and difficulty in meeting the construction schedule requirements of long-span cable-stayed bridge projects.

[0005] Therefore, in view of the low installation efficiency of multiple sets of steel strands in the prior art, there is an urgent need to develop a stay cable steel strand installation device that can achieve the simultaneous installation of multiple sets of steel strands to further improve the construction quality and efficiency of cable-stayed bridge stay cables. SUMMARY

[0006] In view of the above-mentioned shortcomings of the prior art, the present application provides a stay cable steel strand installation device.

[0007] To achieve the above-mentioned purposes, the present application is implemented by the following technical solutions:

[0008] The cable-stayed cable steel strand installation device comprises three groups of multi-point synchronous clamping assemblies, a driving assembly and a pushing assembly; the multi-point synchronous clamping assembly comprises a clamping box body, a piston, an arc-shaped clamping block and a plurality of guide horizontal pipes, the clamping box body is formed with a movable space, a plurality of tapered holes are arranged at intervals on one side wall of the clamping box body, a plurality of through holes are arranged at intervals on the opposite side wall, each guide horizontal pipe is arranged at a through hole and opposite to a tapered hole, the piston is sleeved on the guide horizontal pipe and is attached to the inner wall of the movable space, the piston can slide on the guide horizontal pipe, at least two arc-shaped clamping blocks are arranged at each tapered hole on the side of the piston facing the tapered hole; the driving assembly is used for driving the piston to move in the movable space towards or away from the tapered hole, so that the arc-shaped clamping block is arranged in the tapered hole to clamp the steel strand or the arc-shaped clamping block is separated from the tapered hole to release the steel strand; the clamping box body of the first group of multi-point synchronous clamping assemblies is fixedly connected with the driving end of the pushing assembly, the clamping box body of the second group of multi-point synchronous clamping assemblies is fixedly connected with the fixed end of the pushing assembly, the third group of multi-point synchronous clamping assemblies is not connected with the pushing assembly, and the central axes of the three groups of multi-point synchronous clamping assemblies are parallel to the central axis of the cable guide pipe during installation of the cable-stayed cable steel strand.

[0009] Further, the multi-point synchronous clamping assembly further comprises a second spring arranged on the side of the piston facing the tapered hole, and the second spring is used for providing the piston with elastic force away from the tapered hole.

[0010] Further, the cable-stayed cable steel strand installation device further comprises a rotating frame; the pushing assembly comprises a hydraulic cylinder, a guide rod, a second support seat and a side fixing block, the side fixing block is installed on the rotating frame, one end of the side fixing block is connected to the outer wall of the second group of multi-point synchronous clamping assemblies, the hydraulic cylinder is fixedly installed on the other end of the side fixing block, one end of the second support seat is connected to the outer wall of the first group of multi-point synchronous clamping assemblies, the other end is connected with the driving end of the hydraulic cylinder, a guide hole is formed in the second support seat, and the guide rod is arranged in the guide hole and installed on the rotating frame.

[0011] Further, the driving assembly connected with the clamping box bodies of the two groups of multi-point synchronous clamping assemblies connected with the pushing assembly comprises a first oil pipe and a second oil pipe, the two ends of the first oil pipe and the second oil pipe are respectively fixedly connected with the clamping box bodies of the first group and the second group of multi-point synchronous clamping assemblies, and the first oil pipe and the second oil pipe are used for driving the pistons in the two groups of multi-point synchronous clamping assemblies connected with the pushing assembly to move towards or away from the tapered hole, so that the arc-shaped clamping blocks clamp or release the steel strand.

[0012] Furthermore, the cable-stayed steel strand installation device also includes a movable housing and an angle adjustment assembly. The angle adjustment assembly is mounted on the movable housing, and the rotating frame is mounted on the angle adjustment assembly. The angle adjustment assembly is used to adjust the rotation of the rotating frame.

[0013] Furthermore, the angle adjustment assembly includes a drive motor, a first support frame, a worm gear, a horizontal shaft, and a worm. The drive motor is fixedly mounted on the first support frame, and the drive end of the drive motor is fixedly connected to the worm. The worm meshes with the worm gear, and the horizontal shaft is fixedly mounted in the mounting hole of the worm gear. Both ends of the horizontal shaft are rotatably connected to the first support frame through bearings. There are two rotating frames and two pushing components. The two pushing components are respectively set on the corresponding rotating frames and are located on opposite sides of the first group of multi-point synchronous clamping components. The two rotating frames are symmetrically fixedly mounted on both ends of the horizontal shaft.

[0014] Furthermore, the cable-stayed steel strand installation device also includes a height adjustment component, which is housed within a movable housing. An angle adjustment component is mounted on the height adjustment component and is used to drive the angle adjustment component to move up and down. A first support frame is fixedly installed on the top of the height adjustment component.

[0015] Furthermore, the drive component connected to the clamping box of the third set of multi-point synchronous clamping components, which is not connected to the pushing component, is a pneumatic adjustment component. The pneumatic adjustment component is used to drive the piston to move toward or away from its moving conical hole so that the arc-shaped clamping block clamps or releases the steel strand.

[0016] Furthermore, the outer wall of the clamping box of the third set of multi-point synchronous clamping components is fixedly connected with a double roller group at equal intervals along the circumference.

[0017] Furthermore, the clamping box has a transverse hole located on the side of the piston facing away from the conical hole; the air pressure regulating assembly includes a slide rod, a limiting block, a first spring, a sealing member, and an annular plate. The annular plate is fixedly installed on the inner wall of the transverse hole, the limiting block is fixed inside the transverse hole and located inside the annular plate, the limiting block is slidably connected to one end of the slide rod through a sliding hole, the other end of the slide rod passes through the annular plate and is spaced apart from the inner wall of the annular plate, the sealing member is fixedly installed on the slide rod and located between the limiting block and the annular plate, the two ends of the first spring are respectively connected to the limiting block and the sealing member and are used to provide elastic force towards the annular plate for the sealing member, so that the sealing member seals the gap between the annular plate and the slide rod.

[0018] The present invention has the following technical effects:

[0019] Multiple sets of steel strands are sequentially passed through the guide tubes and tapered holes of three sets of multi-point synchronous clamping assemblies. The drive assembly moves the pistons of the first and third sets of multi-point synchronous clamping assemblies within the movable space towards the tapered holes, so that the arc-shaped clamping blocks are inserted into the tapered holes to clamp the steel strands. The push assembly drives the first and third sets of multi-point synchronous clamping assemblies to move synchronously with the multiple sets of steel strands, providing guidance for their synchronous movement. After the first set of multi-point synchronous clamping assemblies moves a certain distance, it releases the steel strands and returns to its initial position. At this time, the second set of multi-point synchronous clamping assemblies clamps the steel strands to stabilize their position. By repeating the above actions, synchronous driving of multiple sets of steel strands can be achieved, resulting in high installation efficiency. Meanwhile, this invention facilitates the simultaneous movement of multiple sets of steel strands along the central axis of the cable guide, avoiding steel strand untwisting, promoting rapid and stable installation of steel strands, improving overall construction efficiency, and meeting the construction progress requirements of long-span cable-stayed bridge projects. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 This invention provides a three-dimensional installation device for cable-stayed steel strands. Figure 1 ;

[0022] Figure 2 This is a front view of a cable-stayed bridge steel strand installation device according to the present invention;

[0023] Figure 3 This invention provides a three-dimensional installation device for cable-stayed steel strands. Figure 2 ;

[0024] Figure 4 This invention provides a three-dimensional installation device for cable-stayed steel strands. Figure 3 ;

[0025] Figure 5 This invention provides a three-dimensional installation device for cable-stayed steel strands. Figure 4 ;

[0026] Figure 6 This invention provides a three-dimensional installation device for cable-stayed steel strands. Figure 5 ;

[0027] Figure 7 This is a schematic diagram of the structure of a multi-point synchronous clamping component;

[0028] Figure 8 For along Figure 7 A sectional view along the AA direction;

[0029] Figure 9 for Figure 8 Enlarged view of the structure at point B;

[0030] Figure 10 for Figure 8 Enlarged view of the structure at point C;

[0031] Figure 11 This is a schematic diagram of the structure of a cable-stayed cable strand installation device in contact with a cable guide tube according to the present invention.

[0032] The labels in the diagram represent:

[0033] 1. Moving housing; 2. Height adjustment assembly; 3. Angle adjustment assembly; 31. Drive motor; 32. First support frame; 33. Worm gear; 34. Horizontal shaft; 35. Rotating frame; 36. Worm; 37. First support seat; 4. Multi-point synchronous clamping assembly; 41. Clamping housing; 42. Conical hole; 43. Piston; 44. Arc-shaped clamping block; 45. Guide horizontal tube; 5. Pushing assembly; 51. Hydraulic cylinder; 52. Second support frame; 53. Guide rod; 54. Second support seat; 55. Side fixing block; 6. Double roller assembly; 7. First oil pipe; 8. Second oil pipe; 9. Air pressure adjustment assembly; 91. Horizontal hole; 92. Slide rod; 93. Limiting block; 94. First spring; 95. Sealing component; 96. Horizontal tube; 97. Conical groove; 98. Annular plate; 10. Second spring. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to embodiments.

[0036] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0037] Please see the appendix Figures 1-11In one embodiment, a cable-stayed bridge steel strand installation device includes three sets of multi-point synchronous clamping assemblies 4, a driving assembly, and a pushing assembly 5. The multi-point synchronous clamping assembly 4 includes a clamping housing 41, a piston 43, an arc-shaped clamping block 44, and multiple guide tubes 45. The clamping housing 41 has an internal movable space. One side wall of the clamping housing 41 has multiple spaced-apart conical holes 42, and the opposite side wall has multiple spaced-apart through holes. Each guide tube 45 is correspondingly positioned at a through hole and opposite to a conical hole 42. The piston 43 is sleeved on the guide tube 45 and fits against the inner wall of the movable space. The piston 43 can slide on the guide tube 45, and the side of the piston 43 facing the conical hole 42... At least two arc-shaped clamping blocks 44 are provided at intervals around the axis of each conical hole 42. The driving assembly is used to drive the piston 43 to move in the active space in a direction toward or away from the conical hole 42, so that the arc-shaped clamping blocks 44 pass through the conical hole 42 to clamp the steel strand or to release the steel strand by disengaging the arc-shaped clamping blocks 44 from the conical hole 42. The clamping box 41 of the first set of multi-point synchronous clamping components 4 is fixedly connected to the driving end of the pushing component 5. The clamping box 41 of the second set of multi-point synchronous clamping components 4 is connected to the fixed end of the pushing component 5. The third set of multi-point synchronous clamping components 4 is not connected to the pushing component 5. When the cable-stayed steel strand is installed, the central axis of the three sets of multi-point synchronous clamping components 4 is parallel to the central axis of the cable guide.

[0038] The specific steps are as follows:

[0039] Multiple sets of steel strands are sequentially passed through the guide tubes 45 and conical holes 42 of three sets of multi-point synchronous clamping components 4. The drive component drives the piston 43 inside the clamping box 41 of the multi-point synchronous clamping component 4 (not connected to the push component 5) to move towards the conical hole 42. The piston 43 drives the arc-shaped clamping blocks 44 to move towards the conical hole 42. After the arc-shaped clamping blocks 44 are inserted into the conical hole 42, their left ends move closer together to hold the steel strands, thus achieving the clamping of the steel strands by the multi-point synchronous clamping component 4 (not connected to the push component 5). Then, the clamping box 41 of the multi-point synchronous clamping component 4 (not connected to the push component 5) is pushed into the cable guide tube.

[0040] Next, the pushing component 5 drives the clamping box 41 of the multi-point synchronous clamping component 4 connected to the driving end of the pushing component 5 to move to the initial position. The steel strand is inserted into the inner wall of the guide tube 45 in the clamping box 41 of the multi-point synchronous clamping component 4 connected to the driving end of the pushing component 5, and passes through the conical hole 42. The driving component drives the piston 43 in the clamping box 41 of the multi-point synchronous clamping component 4 connected to the driving end of the pushing component 5 to move towards the conical hole 42. The piston 43 drives the arc-shaped clamping block 44 to move towards the conical hole 42. After the arc-shaped clamping block 44 is inserted into the conical hole 42, the left ends of the arc-shaped clamping blocks 44 approach each other to hold the steel strand, thus realizing the clamping of the steel strand by the multi-point synchronous clamping component 4 connected to the driving end of the pushing component 5. Then, the piston 43 inside the clamping box 41 of the multi-point synchronous clamping component 4, which is connected to the fixed end of the push component 5, moves away from the conical hole 42. The piston 43 drives the arc-shaped clamping block 44 to move away from the conical hole 42. After the arc-shaped clamping block 44 separates from the conical hole 42, the left end of the arc-shaped clamping block 44 releases the steel strand, thus realizing the release of the steel strand by the multi-point synchronous clamping component 4 connected to the push component 5.

[0041] Next, the pushing component 5 pushes the clamping box 41 of the multi-point synchronous clamping component 4, which is connected to the driving end of the pushing component 5, to move towards the cable guide. When the pushing component 5 reaches its maximum length, the driving component drives the piston 43 of the multi-point synchronous clamping component 4, which is connected to the driving end of the pushing component 5, to move away from the conical hole 42. The piston 43 drives the arc-shaped clamping block 44 to move away from the conical hole 42, and the arc-shaped clamping block 44 releases the steel strand. The multi-point synchronous clamping component 4, which is connected to the driving end of the pushing component 5, then releases the steel strand. Then, the driving component drives the piston 43 in the clamping box 41 of the multi-point synchronous clamping component 4, which is connected to the fixed end of the pushing component 5, to move towards the conical hole 42. The piston 43 drives the arc-shaped clamping block 44 to move towards the conical hole 42, and the left ends of the arc-shaped clamping blocks 44 move closer to each other to clamp the steel strand. Repeat the above actions until the clamping box 41 of the multi-point synchronous clamping component 4, which is not connected to the pushing component 5, moves to the top of the cable guide tube. This facilitates the simultaneous movement of multiple sets of steel strands along the central axis of the cable guide tube, avoids the steel strands from twisting, and promotes the rapid and stable installation of the steel strands, thereby improving the overall construction efficiency and meeting the construction progress requirements of large-span cable-stayed bridge projects.

[0042] Please see the appendix Figure 8 and Figure 9In one embodiment, the multi-point synchronous clamping assembly 4 further includes a second spring 10, which is disposed on the side of the piston 43 facing the conical hole 42. The second spring 10 provides a spring force to the piston 43 in a direction away from the conical hole 42. When the multi-point synchronous clamping assembly 4 clamps the steel strand, the second spring 10 is in a compressed state. When the driving assembly stops driving the clamping housing 41 of the multi-point synchronous clamping assembly 4, the restoring force of the second spring 10 pushes the piston 43 to move away from the conical hole 42. The piston 43 drives the arc-shaped clamping block 44 to move away from the conical hole 42. After the arc-shaped clamping block 44 separates from the conical hole 42, the left end of the arc-shaped clamping block 44 releases the steel strand, thereby opening the multi-point synchronous clamping assembly 4 connected to the side fixing block 55 and releasing the steel strand. For example, the second spring 10 may be included only in the third group of the multi-point synchronous clamping assemblies 4 that are not connected to the pushing assembly 5.

[0043] Please see the appendix Figure 3 In one embodiment, the cable-stayed bridge steel strand installation device further includes a rotating frame 35; the pushing component 5 includes a hydraulic cylinder 51, a guide rod 53, a second support base 54, and a side fixing block 55. The side fixing block 55 is mounted on the rotating frame 35, one end of the side fixing block 55 is connected to the outer wall of the second set of multi-point synchronous clamping components 4, the hydraulic cylinder 51 is fixedly mounted on the other end of the side fixing block 55, one end of the second support base 54 is connected to the outer wall of the first set of multi-point synchronous clamping components 4, and the other end is connected to the driving end of the hydraulic cylinder 51. A guide hole is provided on the second support base 54, and the guide rod 53 passes through the guide hole and is mounted on the rotating frame 35. The length direction of the guide rod 53 is the direction from the first set of multi-point synchronous clamping components 4 towards the second set of multi-point synchronous clamping components 4. The second support base 54 is the driving end of the pushing component 5, and the side fixing block 55 is the fixing end of the pushing component 5.

[0044] Specific operation: The multi-point synchronous clamping assembly 4, which is not connected to the pushing assembly 5, clamps the end of the steel strand; the driving assembly drives the multi-point synchronous clamping assembly 4, which is connected to the second support seat 54 of the pushing assembly 5, to clamp the steel strand; the driving assembly then drives the multi-point synchronous clamping assembly 4, which is connected to the side fixing block 55 of the pushing assembly 5, to release the steel strand. The hydraulic cylinder 51 of the pushing assembly 5 drives the second support seat 54 to move along the guide rod 53, and the second support seat 54 drives the first group of multi-point synchronous clamping assemblies 4 to move towards the third group of multi-point synchronous clamping assemblies 4.

[0045] Then, the drive component drives the first set of multi-point synchronous clamping components 4, which is connected to the second support seat 54 of the push component 5, to release the steel strand. The drive component drives the second set of multi-point synchronous clamping components 4, which is connected to the side fixing block 55 of the push component 5, to clamp the steel strand. The hydraulic cylinder 51 of the push component 5 drives the second support seat 54 to move along the guide rod 53. The second support seat 54 drives the first set of multi-point synchronous clamping components 4 to move away from the third set of multi-point synchronous clamping components 4. The above actions are repeated to achieve synchronous driving of multiple sets of steel strands, resulting in high installation efficiency of steel strands.

[0046] Please see the appendix Figure 1 and Figure 6 In one embodiment, the drive assembly connected to the clamping housing 41 of the two sets of multi-point synchronous clamping assemblies 4 connected to the push assembly 5 includes a first oil pipe 7 and a second oil pipe 8. The two ends of the first oil pipe 7 and the second oil pipe 8 are respectively fixedly connected to the clamping housing 41 of the first set and the second set of multi-point synchronous clamping assemblies 4. The first oil pipe 7 and the second oil pipe 8 cooperate to drive the piston 43 in the first set and the second set of multi-point synchronous clamping assemblies 4 to move toward or away from its conical hole 42, so that the arc-shaped clamping block 44 clamps or releases the steel strand.

[0047] Specific operations:

[0048] The first oil pipe 7 fills the first set of multi-point synchronous clamping components 4, which is connected to the second support seat 54 of the push assembly 5, with liquid. The liquid pushes the piston 43 to move towards the conical hole 42. The piston 43 drives the arc-shaped clamping block 44 to move towards the conical hole 42. After the arc-shaped clamping block 44 is inserted into the conical hole 42, the left ends of the arc-shaped clamping blocks 44 move closer to each other to clamp the steel strand. The multi-point synchronous clamping components 4 connected to the second support seat 54 of the push assembly 5 clamp the steel strand. The second oil pipe 8 draws liquid from the second set of multi-point synchronous clamping components 4, which is connected to the side fixing block 55 of the push assembly 5, so that the piston 43 moves away from the conical hole 42. The piston 43 drives the arc-shaped clamping block 44 to move away from the conical hole 42. The arc-shaped clamping block 44 separates from the conical hole 42, and the left end of the arc-shaped clamping block 44 of the second set of multi-point synchronous clamping components 4 releases the steel strand.

[0049] Next, the hydraulic cylinder 51 of the push component 5 drives the second support seat 54 to move along the guide rod 53, and the second support seat 54 drives the first group of multi-point synchronous clamping components 4 to move forward.

[0050] Then, the second oil pipe 8 draws liquid from the first set of multi-point synchronous clamping components 4 connected to the second support seat 54 of the push assembly 5. The first set of multi-point synchronous clamping components 4 opens to release the steel strand, and the first oil pipe 7 fills the second set of multi-point synchronous clamping components 4 with liquid to clamp the steel strand. The hydraulic cylinder 51 of the push assembly 5 drives the second support seat 54 to move along the guide rod 53, and the second support seat 54 drives the first set of multi-point synchronous clamping components 4 to move backward and reset. The above actions are repeated to achieve synchronous driving of multiple sets of steel strands, resulting in high installation efficiency of steel strands.

[0051] Please see the appendix Figure 1 , Figure 4 and Figure 5 In one embodiment, the cable-stayed steel strand installation device further includes a movable housing 1 and an angle adjustment component 3. The angle adjustment component 3 is disposed on the movable housing 1, and the rotating frame 35 is disposed on the angle adjustment component 3. The angle adjustment component 3 is used to adjust the rotation of the rotating frame 35.

[0052] Specifically, the angle adjustment component 3 includes a drive motor 31, a first support frame 32, a worm gear 33, a horizontal shaft 34, and a worm 36. The drive motor 31 is fixedly installed on the first support frame 32. The drive end of the drive motor 31 is fixedly connected to the worm 36, which meshes with the worm gear 33. The horizontal shaft 34 is fixedly installed in the mounting hole of the worm gear 33. Both ends of the horizontal shaft 34 are rotatably connected to the first support frame 32 through bearings. There are two rotating frames 35 and two pushing components 5. The two pushing components 5 are respectively set on the corresponding rotating frames 35 and are located on opposite sides of the first group of multi-point synchronous clamping components 4. The two rotating frames 35 are symmetrically fixedly installed on both ends of the horizontal shaft 34.

[0053] The drive motor 31 of the angle adjustment component 3 drives the worm gear 36 to rotate, the worm gear 36 drives the worm wheel 33 to rotate, the worm wheel 33 drives the horizontal shaft 34 to rotate, the horizontal shaft 34 drives the rotating frame 35 to rotate, the rotating frame 35 drives the pushing component 5 to rotate, and the pushing component 5 drives the central axis of the first and second groups of multi-point synchronous clamping components 4 to be parallel to the central axis of the cable guide, so as to realize the synchronous adjustment of the installation angle of multiple groups of steel strands.

[0054] Please see the appendix Figure 1 In one embodiment, the cable-stayed bridge steel strand installation device further includes a height adjustment component 2, which is disposed inside the movable housing 1. An angle adjustment component 3 is disposed on the height adjustment component 2, and the height adjustment component 2 is used to drive the angle adjustment component 3 to move up and down. Specifically, a first support frame 32 is fixedly installed on the top of the height adjustment component 2. In this embodiment, the height adjustment component 2 is an electric scissor lift bracket.

[0055] The height adjustment component 2 adjusts the first and second sets of multi-point synchronous clamping components 4 connected to the push component 5 to move upward, so that the central axis of the first and second sets of multi-point synchronous clamping components 4 coincides with the central axis of the cable guide tube. This makes it easier for the first and second sets of multi-point synchronous clamping components 4 to be adjusted to be directly opposite the cable guide tube, which is beneficial for the subsequent pushing of the steel strand directly opposite the cable guide tube.

[0056] Please see the appendix Figure 1 In one embodiment, the outer wall of the clamping housing 41 of the third group of multi-point synchronous clamping components 4, which is not connected to the pushing component 5, is fixedly connected with double roller groups 6 at equal intervals along the circumferential direction. When the third group of multi-point synchronous clamping components 4 is located inside the cable guide, the multiple double roller groups 6 contact the inner wall of the cable guide, and the double roller groups 6 guide the movement of the third group of multi-point synchronous clamping components 4, while reducing the movement resistance of the third group of multi-point synchronous clamping components 4.

[0057] Please see the appendix Figure 1 , Figure 8 and Figure 10 In one embodiment, the driving component connected to the clamping box 41 of the third set of multi-point synchronous clamping components 4 is a pneumatic pressure regulating component 9. The pneumatic pressure regulating component 9 is used to drive the piston 43 of the third set of multi-point synchronous clamping components 4 to move toward or away from its conical hole 42, so that its arc-shaped clamping block 44 clamps or releases the steel strand.

[0058] Specifically, the clamping housing 41 of the third multi-point synchronous clamping assembly 4 has a transverse hole 91, which is located on the side of the piston 43 facing away from the conical hole 42. The air pressure regulating assembly 9 includes a slide rod 92, a limiting block 93, a first spring 94, a sealing member 95, and an annular plate 98. The annular plate 98 is fixedly installed on the inner wall of the transverse hole 91. The limiting block 93 is fixed inside the transverse hole 91 and located inside the annular plate 98. The limiting block 93 is slidably connected to one end of the slide rod 92 through a sliding hole. The other end of the slide rod 92 passes through the annular plate 98 and is spaced apart from the inner wall of the annular plate 98. The sealing member 95 is fixedly installed on the slide rod 92 and is located between the limiting block 93 and the annular plate 98. The two ends of the first spring 94 are connected to the limiting block 93 and the sealing member 95 respectively and are used to provide the sealing member 95 with elastic force toward the annular plate 98 so that the sealing member 95 seals the gap between the annular plate 98 and the slide rod 92.

[0059] Furthermore, when the sealing component 95 is in contact with the annular plate 98 on the left side, the right end of the sliding rod 92 is flush with the right end of the horizontal tube 96. The right end of the horizontal tube 96 is threadedly connected to the output end of the air pump inside the movable housing 1.

[0060] The air pump inside the movable housing 1 inflates the horizontal tube 96 of the air pressure regulating component 9. The gas pushes the sealing component 95 to move to the left. The gas enters the clamping housing 41 through the gap between the sealing component 95 and the annular plate 98. The clamping housing 41 of the third set of multi-point synchronous clamping components 4 is inflated. The gas pushes the piston 43 to move towards the conical hole 42. The piston 43 drives the arc-shaped clamping block 44 to move towards the conical hole 42 and insert it into the conical hole 42. The left ends of the arc-shaped clamping blocks 44 move closer to each other to clamp the steel strands, thus achieving the purpose of the third set of multi-point synchronous clamping components 4 to clamp multiple sets of steel strands simultaneously. At this time, the second spring 10 is in a compressed state. The horizontal tube 96 is separated from the output end of the air pump in the movable housing 1. The first spring 94 drives the slide rod 92 to move. The slide rod 92 drives the sealing member 95 to move towards the annular plate 98. After the sealing member 95 contacts the annular plate 98, the sealing member 95 seals the horizontal tube 96, so that the third set of multi-point synchronous clamping components 4 always keeps the steel strand in a clamping state.

[0061] When the third set of multi-point synchronous clamping components 4 moves to the top of the cable guide, press the slide bar 92 to move towards the piston 43, the sealing part 95 separates from the annular plate 98, the gas in the clamping box 41 is discharged through the gap between the sealing part 95 and the annular plate 98, the clamping box 41 of the third set of multi-point synchronous clamping components 4 is de-aired, the restoring force of the second spring 10 pushes the piston 43 to move away from the conical hole 42, the piston 43 drives the arc-shaped clamping block 44 to move away from the conical hole 42, after the arc-shaped clamping block 44 separates from the conical hole 42, the arc-shaped clamping block 44 releases the steel strand, realizing the opening of the third set of multi-point synchronous clamping components 4.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cable-stayed bridge steel strand installation device, characterized in that, include: Three sets of multi-point synchronous clamping components (4); The multi-point synchronous clamping assembly (4) includes a clamping box (41), a piston (43), an arc-shaped clamping block (44), and multiple guide tubes (45). The clamping box (41) has an active space. One side wall of the clamping box (41) is provided with multiple spaced conical holes (42), and the opposite side wall is provided with multiple spaced through holes. Each guide tube (45) is correspondingly provided at one of the through holes and is correspondingly provided opposite to one of the conical holes (42). The piston (43) is sleeved on the guide tube (45) and fits against the inner wall of the active space. The piston (43) can slide on the guide tube (45). The piston (43) faces the side of the conical hole (42). At least two arc-shaped clamping blocks (44) are provided at each conical hole (42) spaced around the axis of the conical hole (42). A drive assembly is used to drive the piston (43) to move in the active space toward or away from the conical hole (42) so that the arc-shaped clamp (44) passes through the conical hole (42) to clamp the steel strand or to disengage the arc-shaped clamp (44) from the conical hole (42) to release the steel strand. The rotating frame (35) and the pushing assembly (5) include a hydraulic cylinder (51), a guide rod (53), a second support seat (54), and a side fixing block (55). The side fixing block (55) is installed on the rotating frame (35). The clamping box (41) of the first group of multi-point synchronous clamping assemblies (4) is fixedly connected to one end of the second support seat (54) of the pushing assembly (5). The other end of the second support seat (54) is connected to the driving end of the hydraulic cylinder (51). The clamping box (41) of the second group of multi-point synchronous clamping assemblies (4) is connected to one end of the side fixing block (55) of the pushing assembly (5). The hydraulic cylinder (51) is fixedly installed on the other end of the side fixing block (55). The third group of multi-point synchronous clamping assemblies (4) is not connected to the pushing assembly (5). When the cable-stayed steel strand is installed... The central axis of the three sets of multi-point synchronous clamping components (4) is parallel to the central axis of the cable guide; the second support seat (54) is provided with a guide hole, and the guide rod (53) passes through the guide hole and is installed in the rotating frame (35); the drive component connected to the clamping box (41) of the first and second sets of multi-point synchronous clamping components (4) includes a first oil pipe (7) and a second oil pipe (8). The two ends of the first oil pipe (7) and the second oil pipe (8) are fixedly connected to the clamping box (41) of the first and second sets of multi-point synchronous clamping components (4), respectively. The first oil pipe (7) and the second oil pipe (8) cooperate to drive the piston (43) in the first and second sets of multi-point synchronous clamping components (4) to move toward or away from its conical hole (42) so that the arc-shaped clamping block (44) clamps or releases the steel strand.

2. The cable-stayed bridge steel strand installation device according to claim 1, characterized in that, The multi-point synchronous clamping assembly (4) also includes a second spring (10), which is disposed on the side of the piston (43) facing the tapered hole (42). The second spring (10) is used to provide the piston (43) with a spring force in the direction away from the tapered hole (42).

3. The cable-stayed bridge steel strand installation device according to claim 1, characterized in that, It also includes a movable housing (1) and an angle adjustment component (3), the angle adjustment component (3) being disposed on the movable housing (1), and the rotating frame (35) being disposed on the angle adjustment component (3), the angle adjustment component (3) being used to adjust the rotation of the rotating frame (35).

4. The cable-stayed bridge steel strand installation device according to claim 3, characterized in that, The angle adjustment assembly (3) includes a drive motor (31), a first support frame (32), a worm gear (33), a horizontal shaft (34), and a worm (36). The drive motor (31) is fixedly installed on the first support frame (32). The drive end of the drive motor (31) is fixedly connected to the worm (36). The worm (36) meshes with the worm gear (33), and the horizontal shaft (34) is fixedly installed in the mounting hole of the worm gear (33). The two ends of the horizontal shaft (34) are rotatably connected to the first support frame (32) through bearings. The number of rotating frames (35) and the number of pushing assemblies (5) are both two. The two pushing assemblies (5) are respectively set on the corresponding rotating frames (35) and are located on opposite sides of the first group of multi-point synchronous clamping assemblies (4). The two rotating frames (35) are symmetrically fixedly installed on the two ends of the horizontal shaft (34).

5. The cable-stayed bridge strand installation device according to claim 3, characterized in that, It also includes a height adjustment component (2), which is disposed inside the movable housing (1), and an angle adjustment component (3) is disposed on the height adjustment component (2). The height adjustment component (2) is used to drive the angle adjustment component (3) to move up and down.

6. The cable-stayed bridge steel strand installation device according to any one of claims 1-5, characterized in that, The outer wall of the clamping box (41) of the third group of multi-point synchronous clamping components (4) which is not connected to the pushing component (5) is fixedly connected with a double roller group (6) at equal intervals along the circumference.

7. The cable-stayed bridge strand installation device according to any one of claims 1-5, characterized in that, The driving component connected to the clamping box (41) of the third multi-point synchronous clamping assembly (4) is a pneumatic adjustment component (9). The pneumatic adjustment component (9) is used to drive the piston (43) of the third multi-point synchronous clamping assembly (4) to move toward or away from its conical hole (42) so that its arc-shaped clamping block (44) clamps or releases the steel strand.

8. The cable-stayed bridge strand installation device according to claim 7, characterized in that, The clamping housing (41) of the third multi-point synchronous clamping assembly (4) has a horizontal hole (91) on it. The horizontal hole (91) is located on the side of the piston (43) facing away from the conical hole (42). The air pressure regulating assembly (9) includes a slide rod (92), a limiting block (93), a first spring (94), a sealing member (95), and an annular plate (98). The annular plate (98) is fixedly installed on the inner wall of the horizontal hole (91). The limiting block (93) is fixed in the horizontal hole (91) and located inside the annular plate (98). The limiting block (93) is slidably connected to one end of the slide rod (92) through a sliding hole. The other end of the slide rod (92) passes through the annular plate (98) and... The sealing member (95) is fixedly installed on the slide rod (92) and located between the limiting block (93) and the annular plate (98) at intervals from the inner wall of the annular plate (98). The two ends of the first spring (94) are respectively connected to the limiting block (93) and the sealing member (95) and are used to provide the sealing member (95) with elastic force toward the annular plate (98) so that the sealing member (95) seals the gap between the annular plate (98) and the slide rod (92).

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