A cable hoisting device for arch bridge construction

Abstract

This invention relates to cable hoisting equipment, and discloses a cable hoisting device for arch bridge construction, including a lifting beam with lifting lugs. Support rods are slidably arranged on both sides of the lifting beam, and a winding roller is rotatably mounted on each support rod. A steel wire rope is wound around the winding roller. An L-shaped plate is hinged to one side of each support rod, and a guide wheel is provided at one end of the L-shaped plate. The steel wire rope passes through the support rod and the guide wheel on the L-shaped plate. A rotating mechanism for controlling the rotation of the winding roller is provided on the support rod, and a fixing mechanism for limiting the position of the support rod is provided on one side. Four clamping plates are hinged to the lifting beam. Compared with the prior art, the advantages of this invention are that it can fix the precast components being hoisted, thereby reducing swaying and the risk of falling. Simultaneously, it can automatically adjust the lifting points according to different lengths of precast components, keeping the steel wire rope vertical and improving its service life. It can also change the inclination of the precast components, saving time and effort.

Description

Technical Field

[0001] This invention relates to the field of cable hoisting equipment technology, specifically to a cable hoisting equipment for arch bridge construction. Background Technology

[0002] Cable hoisting equipment, also known as cable-stayed trolleys, is a type of crane where a lifting trolley equipped with a lifting device runs along an overhead support. It is commonly used in situations where other hoisting methods are inconvenient, or where the lifting weight is not large but the span or height is significant, such as bridge construction or hydroelectric power station construction. It provides lateral support by laying steel cables between two support points. A drive unit moves the lifting trolley along the cable to achieve horizontal displacement. The winch on the trolley lifts or lowers the load vertically via wire ropes. The operator precisely controls the entire process through a control system to ensure accurate lifting and placement of the load.

[0003] In the construction of arch bridges, steel-concrete composite arch bridges are mostly used. Steel-concrete composite arch bridges use steel pipes as the outer formwork and are filled with concrete inside. The two materials work together to bear the load, which has significant advantages. At the same time, the construction is more convenient. The arch ribs are prefabricated in the factory and then transported to the designated location for hoisting and splicing using cable hoisting equipment. The construction is convenient, the construction cycle is shortened, and the construction cost is reduced.

[0004] When hoisting precast components, the components are only connected to the hoisting equipment by hoisting ropes. The components may sway due to wind, increasing the risk of falling. At the same time, the hoisting points are fixed during hoisting. When hoisting precast components of different lengths, the hoisting ropes tilt, which reduces the service life of the hoisting ropes. When hoisting the precast components to the designated position, workers are required to assist in changing the tilt, which is time-consuming and labor-intensive. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned difficulties and provide a cable hoisting device for arch bridge construction.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a cable hoisting device for arch bridge construction, including a lifting beam, a lifting lug on the lifting beam, support rods arranged on both sides of the lifting beam, a winding roller rotatably mounted on the support rod, a steel wire rope wound on the winding roller, an L-shaped plate hinged to one side of the support rod, a guide wheel at one end of the L-shaped plate, the steel wire rope passing through the support rod and the guide wheel, a rotating mechanism for controlling the rotation of the winding roller on the support rod, a fixing mechanism for limiting the position of the support rod on one side of the support rod, four clamping plates hinged to the lifting beam, and a transmission mechanism on the lifting beam for the L-shaped plate to rotate and drive the four clamping plates to rotate. During hoisting and lifting, the steel wire rope is tightened, the steel wire rope drives the L-shaped plate to rotate, the L-shaped plate rotation drives the fixing mechanism and the transmission mechanism, the transmission mechanism drives the clamping plates to clamp the precast component, the fixing mechanism fixes the support rod to the lifting beam, and the rotating mechanism controls the winding and unwinding of the steel wire rope to change the inclination of the precast component.

[0007] As an improvement, the rotating mechanism includes an insertion hole on the lifting beam, a support rod inserted into the insertion hole, a second rotating shaft rotatably passing through the support rod inside the insertion hole, a first driving wheel rotatably mounted on the support rod and sleeved on the second rotating shaft, the rotation of the second rotating shaft driving the first driving wheel to rotate, a screw movably inserted into the support rod, a moving mechanism on the support rod for the first driving wheel to rotate driving the screw to move, a sleeve rotatably mounted on the screw, a transmission gear at one end of the take-up roller, a transmission rack slidably mounted on the support rod meshing with the transmission gear, a connecting block on one side of the transmission rack, and a fixed connection at the other end of the connecting block to the sleeve.

[0008] As an improvement, the moving mechanism includes a threaded sleeve rotatably mounted on a support rod, the threaded sleeve being threadedly connected to a screw, a driven wheel being provided at one end of the threaded sleeve, and a transmission belt being provided between the driving wheel and the driven wheel.

[0009] As an improvement, the support rod is provided with fixed plates arranged on both sides, and the L-shaped plate is provided with rotating shafts arranged on both sides. The rotating shafts are rotatably mounted on the fixed plates, and a torsion spring is provided between the end of the rotating shaft and the fixed plate.

[0010] As an improvement, the fixing mechanism includes two L-shaped sliding plates slidably disposed on the bottom surface of the support rod. A spring is provided between the L-shaped sliding plate and the support rod. Multiple toothed grooves are provided on the inner side of the suspension beam. A toothed block that mates with the toothed groove is provided at one end of the L-shaped sliding plate. A connecting plate is provided on the bottom surface of the support rod. A driven wheel is rotatably disposed on the connecting plate. A driving block that mates with the L-shaped sliding plate is provided on the driven wheel. One side of the driving block is inclined. The rotation of the driving block causes the L-shaped sliding plate to slide. A driving wheel is provided at one end of the rotating shaft. A transmission belt is provided between the driving wheel and the driven wheel.

[0011] As an improvement, the transmission mechanism includes a fixed seat mounted on the lifting beam and corresponding to the clamping plate. A second torsion spring is provided between the clamping plate and the lifting beam. Rotating shafts are rotatably mounted on the fixed seat, with gears interlaced on the rotating shafts. A rack is slidably mounted on the fixed seat and meshes with gear one. A connecting rod is movably inserted into one end of rack one. A second spring is provided between the connecting rod and rack one. A push block is provided at one end of the connecting rod that abuts against the clamping plate. A connecting frame is slidably mounted on the bottom surface of the lifting beam. The L-shaped plate rotates and pushes the connecting frame downward. A linkage mechanism is provided between the connecting frame and the lifting beam, which causes the two rotating shafts to rotate in opposite directions as the connecting frame moves downward.

[0012] As an improvement, the linkage mechanism includes a plug on the connecting frame, the plug passing through the hanging beam, a return spring between one end of the plug and the hanging beam, a gear II at one end of the rotating shaft, an extension frame on the plug, and a rack II meshing with the gear II on the extension frame.

[0013] As an improvement, the bottom surface of the support rod is provided with a limiting mechanism for limiting the wire rope. The limiting mechanism includes a through hole on the support rod, and positioning wheels arranged on both sides are rotatably provided in the through hole. The wire rope is located between the two positioning wheels, and an arc-shaped limiting rod for limiting the wire rope is provided on the guide wheel.

[0014] The advantages of this invention compared to the prior art are:

[0015] 1. By setting up four clamping plates and a transmission mechanism, when the precast component is lifted, the weight of the precast component drives the L-shaped plate to rotate, the L-shaped plate drives the transmission mechanism, and the transmission mechanism drives the four clamping plates to rotate, thus clamping the precast component and making it less likely to shake, reducing the risk of falling.

[0016] 2. By setting two sliding support rods, the wire rope can be automatically adjusted to the appropriate position according to the length of the prefabricated component during hoisting, thereby keeping the wire rope vertical and improving its service life.

[0017] 3. By installing a take-up roller and a rotating mechanism on the lifting beam, after the precast component is lifted to the designated position, the rotating mechanism drives the take-up roller to rotate, thereby winding and unwinding the wire rope, which can adjust the inclination of the precast component, saving time and effort. Attached Figure Description

[0018] Figure 1 This is a perspective view of a cable hoisting device for arch bridge construction according to the present invention.

[0019] Figure 2 This is a top view of a cable hoisting device for arch bridge construction according to the present invention.

[0020] Figure 3 This is a schematic diagram of the rotating mechanism of a cable hoisting device for arch bridge construction according to the present invention.

[0021] Figure 4 This is an exploded view of the rotating mechanism of a cable hoisting device for arch bridge construction according to the present invention.

[0022] Figure 5 This is a schematic diagram of the fixing mechanism of a cable hoisting device for arch bridge construction according to the present invention.

[0023] Figure 6 This is a bottom view of a cable hoisting device for arch bridge construction according to the present invention.

[0024] Figure 7 This invention relates to a cable hoisting device for arch bridge construction. Figure 6 Enlarged view of point A in the middle.

[0025] Figure 8 This is a schematic diagram of the drive mechanism of a cable hoisting device for arch bridge construction according to the present invention.

[0026] Figure 9 This is an enlarged view of section B of the cable hoisting equipment for arch bridge construction according to the present invention.

[0027] Figure 10 This is a cross-sectional view of a cable hoisting device for arch bridge construction according to the present invention.

[0028] As shown in the figure: 1. Lifting beam; 11. Lifting lug; 12. Limiting spring; 2. Support rod; 21. Limiting mechanism; 22. Through hole; 23. Positioning wheel; 24. Arc-shaped limiting rod; 3. Winding roller; 31. Steel wire rope; 4. L-shaped plate; 41. Guide wheel; 42. Fixing plate; 43. Rotating shaft one; 44. Torsion spring one; 5. Rotating mechanism; 51. Insertion hole; 52. Rotating shaft two; 53. Driving wheel one; 54. Screw; 55. Moving mechanism; 551. Threaded sleeve; 552. Driven wheel one; 553. Transmission belt one; 56. Sleeve; 57. Transmission gear; 58. Transmission... 59. Rack; 60. Connecting block; 71. Fixing mechanism; 82. L-shaped sliding plate; 93. Spring 1; 104. Tooth groove; 11. Tooth block; 12. Connecting plate; 13. Driven wheel 2; 14. Driven wheel 2; 15. Driven belt 2; 16. Clamping plate; 17. Roller; 18. Transmission mechanism; 19. Fixing base; 10. Torsion spring 2; 10. Rotating shaft; 11. Gear 1; 12. Rack 1; 13. Connecting rod; 14. Push block; 15. Connecting frame; 16. Linkage mechanism; 17. Insertion post; 18. Return spring; 19. Gear 2; 10. Extension frame; 11. Rack 2. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 10 As shown, a cable hoisting device for arch bridge construction includes a lifting beam 1, on which lifting lugs 11 are provided. Support rods 2 are slidably arranged on both sides of the lifting beam 1. A limiting spring 12 is provided between the support rods 2 and the lifting beam 1. A winding roller 3 is rotatably mounted on the support rods 2. A steel wire rope 31 is wound on the winding roller 3. An L-shaped plate 4 is hinged to one side of the support rod 2. A guide wheel 41 is provided at one end of the L-shaped plate 4. The steel wire rope 31 passes through the support rod 2 and the guide wheel 41. A rotating mechanism 5 for controlling the rotation of the winding roller 3 is provided on the support rod 2. A fixing mechanism 6 for limiting the position of the support rod 2 is provided on one side of the support rod 2. Four clamping plates 7 are hinged to the lifting beam 1. Multiple rollers 71 are rotatably mounted on the clamping plates 7. A transmission mechanism 8 is provided on the lifting beam 1 for the L-shaped plate 4 to rotate and drive the four clamping plates 7 to rotate.

[0031] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 10As shown, the hoisting process tightens the wire rope 31, which in turn drives the L-shaped plate 4 to rotate. The rotation of the L-shaped plate 4 drives the fixing mechanism 6 and the transmission mechanism 8. The transmission mechanism 8 drives the clamping plate 7 to clamp the precast component. The fixing mechanism 6 fixes the support rod 2 to the lifting beam 1. The rotating mechanism 5 controls the winding and unwinding of the wire rope 31 to change the inclination of the precast component.

[0032] The working principle of this invention: In the initial state, the limiting spring 12 is in a relaxed state. The ends of the two steel wire ropes 31 are connected to the precast component. The precast component has holes for easy hoisting, and the position of the holes varies depending on the length of the precast component. The hoisting equipment lifts the lifting beam 1 through the lifting lugs 11. During the upward process, the steel wire ropes 31 gradually tighten and drive the L-shaped plate 4 to rotate. At the same time, the tightened steel wire ropes 31 tend to be vertical, thereby pushing the support rod 2 to slide. The limiting spring 12 is compressed, and the L-shaped plate 4 rotates, driving the fixing mechanism 6 and the transmission mechanism 8. When the steel wire ropes 31 are vertical, the fixing mechanism 6 makes the support rod 2... The component is horizontally fixed on the lifting beam 1. The transmission mechanism 8 drives the clamping plate 7 to rotate, and the rollers 71 on the clamping plate 7 are in contact with the precast component. At this time, the precast component is limited and can be kept fixed during the hoisting process, making it less prone to shaking. At the same time, the wire rope 31 is in a vertical state, which improves the service life of the wire rope 31. When the component is hoisted to a suitable position, the rotating mechanism 5 is started. The rotating mechanism 5 drives the two winding rollers 3 to rotate in opposite directions, so that one winds up and the other unwinds, thereby tilting the precast component. When the appropriate tilt is reached, the rotating mechanism 5 is stopped, and then assembly is carried out.

[0033] Combined with appendix Figure 1 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 As shown, the rotating mechanism 5 includes an insertion hole 51 on the lifting beam 1, a support rod 2 inserted into the insertion hole 51, a rotating shaft 52 rotatably passing through the support rod 2 inside the insertion hole 51, the rotating shaft 52 being driven by a motor, a drive wheel 53 rotatably mounted on the support rod 2 and sleeved on the rotating shaft 52, the rotation of the rotating shaft 52 driving the drive wheel 53 to rotate, a screw 54 movably inserted into the support rod 2, a moving mechanism 55 on the support rod 2 for the drive wheel 53 to rotate and drive the screw 54 to move, a sleeve 56 rotatably mounted on the screw 54, a transmission gear 57 at one end of the take-up roller 3, a transmission rack 58 slidably mounted on the support rod 2 and meshing with the transmission gear 57, a connecting block 59 on one side of the transmission rack 58, the other end of the connecting block 59 being fixedly connected to the sleeve 56, and the screws 54 on the two support rods 2 having opposite thread directions.

[0034] Working principle of rotating mechanism 5: When it is necessary to adjust the inclination of the precast component, the motor is started. The motor drives the rotating shaft 52 to rotate, which in turn drives the drive wheel 53 to rotate. The drive wheel 53 drives the screw 54 to move through the moving mechanism 55. The screw 54 drives the transmission rack 58 to move through the connecting block 59. The transmission rack 58 drives the transmission gear 57 to rotate, which in turn drives the take-up roller 3 to rotate. The take-up roller 3 winds up and unwinds the wire rope 31. Since the threads of the two screws 54 are opposite, even when the rotation direction of the drive wheel 53 is the same, the movement directions of the two screws 54 are opposite. Thus, one take-up roller 3 unwinds the wire rope 31, and the other take-up roller 3 winds up the wire rope 31. When it is necessary to change the inclination direction, the motor can be reversed, thereby changing the inclination direction.

[0035] Combined with appendix Figure 1 Appendix Figure 3 Appendix Figure 4 As shown, the moving mechanism 55 includes a threaded sleeve 551 rotatably mounted on the support rod 2. The threaded sleeve 551 is threadedly connected to the screw 54. One end of the threaded sleeve 551 is provided with a driven wheel 552, and a transmission belt 553 is provided between the driving wheel 53 and the driven wheel 552.

[0036] Working principle of the moving mechanism 55: The driving wheel 53 drives the driven wheel 552 to rotate through the transmission belt 553. The driven wheel 552 drives the threaded sleeve 551 to rotate. Since the threaded sleeve 551 is mounted on the support rod 2, the rotation of the threaded sleeve 551 drives the screw 54 to rotate and move. The movement of the screw 54 drives the sleeve 56 to move.

[0037] Combined with appendix Figure 1 Appendix Figure 5 As shown, the support rod 2 is provided with fixed plates 42 arranged on both sides, and the L-shaped plate 4 is provided with rotating shafts 43 arranged on both sides. The rotating shafts 43 are rotatably mounted on the fixed plates 42, and a torsion spring 44 is provided between the end of the rotating shafts 43 and the fixed plates 42.

[0038] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7As shown, the fixing mechanism 6 includes two L-shaped sliding plates 61 slidably disposed on the bottom surface of the support rod 2. A spring 62 is provided between the L-shaped sliding plate 61 and the support rod 2. The inner side of the hanging beam 1 is provided with multiple toothed grooves 63. One end of the L-shaped sliding plate 61 is provided with a toothed block 64 that cooperates with the toothed groove 63. The bottom surface of the support rod 2 is provided with a connecting plate 65. A driven wheel 66 is rotatably disposed on the connecting plate 65. A driving block 67 that cooperates with the L-shaped sliding plate 61 is disposed on the driven wheel 66. One side of the driving block 67 is inclined. The rotation of the driving block 67 drives the L-shaped sliding plate 61 to slide. One end of the rotating shaft 43 is provided with a driving wheel 68. A transmission belt 69 is provided between the driving wheel 68 and the driven wheel 66.

[0039] Working principle of fixing mechanism 6: In the initial state, torsion spring 44 and spring 62 are relaxed. When the wire rope 31 is taut, the wire rope 31 drives the L-shaped plate 4 to rotate, the L-shaped plate 4 drives the rotating shaft 43 to rotate, the torsion spring 44 twists, the rotating shaft 43 drives the driving wheel 68 to rotate, the driving wheel 68 drives the driven wheel 66 to rotate through the transmission belt 69, the driven wheel 66 drives the drive block 67 to rotate, the inclined surface on the drive block 67 contacts the L-shaped slide plate 61 and pushes the L-shaped slide plate 61 to slide, the spring 62 is compressed, when the wire rope 31 is in a vertical state, the tooth block 64 on the L-shaped slide plate 61 inserts into the tooth groove 63, at this time the fixing of the support rod 2 is completed.

[0040] Combined with appendix Figure 1 Appendix Figure 8 Appendix Figure 9 Appendix Figure 10 As shown, the transmission mechanism 8 includes a fixed seat 81 mounted on the lifting beam 1 and corresponding to the clamping plate 7. A second torsion spring 82 is provided between the clamping plate 7 and the lifting beam 1. Rotating shafts 83 are rotatably mounted on the fixed seat 81, with gears 84 interlaced on the rotating shafts 83. A rack 85 is slidably mounted on the fixed seat 81 and meshes with the gears 84. A connecting rod 86 is movably inserted into one end of the rack 85. A second spring is provided between the connecting rod 86 and the rack 85. A push block 87 is provided at one end of the connecting rod 86 and abuts against the clamping plate 7. A connecting frame 88 is slidably mounted on the bottom surface of the lifting beam 1. The L-shaped plate 4 rotates and pushes the connecting frame 88 downward. A linkage mechanism 9 is provided between the connecting frame 88 and the lifting beam 1, which drives the two rotating shafts 83 to rotate in opposite directions as the connecting frame 88 moves downward.

[0041] Working principle of transmission mechanism 8: In the initial state, torsion spring 2 82 and spring 2 are relaxed. When hoisting the precast component, the wire rope 31 is taut, which drives the L-shaped plate 4 to rotate. The guide wheel 41 on the L-shaped plate 4 contacts the connecting frame 88. The L-shaped plate 4 continues to rotate, which drives the connecting frame 88 to move down. The connecting frame 88 drives the two rotating shafts 83 to rotate in opposite directions through the linkage mechanism 9. The two rotating shafts 83 drive the gear 1 84 on them to rotate. The gear 1 84 drives the rack 1 85 to move. The rack 1 85 drives the push block 87 to move. The push block 87 pushes the clamping plate 7 to rotate. The torsion spring 2 82 twists. When the clamping plate 7 contacts the precast component, the rack 1 85 continues to drive the push block 87 to move, while the clamping plate 7 no longer rotates. Thus, the rack 1 85 moves, the push block 87 does not move, and the spring 2 is compressed. When the wire rope 31 is in a vertical state, the connecting frame 88 stops moving, and the precast component is fixed.

[0042] Combined with appendix Figure 1 Appendix Figure 8 Appendix Figure 9 Appendix Figure 10 As shown, the linkage mechanism 9 includes a pin 91 set on the connecting frame 88, the pin 91 passes through the hanging beam 1, a return spring 92 is provided between one end of the pin 91 and the hanging beam 1, a gear 93 is provided at one end of the rotating shaft 83, an extension frame 94 is provided on the pin 91, and a rack 95 that meshes with the gear 93 is provided on the extension frame 94.

[0043] Working principle of linkage mechanism 9: In the initial state, the reset spring 92 is in a relaxed state. The connecting frame 88 moves down, causing the insertion post 91 to move down. The reset spring 92 is compressed. The insertion post 91 causes the extension frame 94 to move down. The extension frame 94 causes the rack 2 95 to move down. The rack 2 95 causes the two gears 2 93 to rotate in opposite directions.

[0044] Combined with appendix Figure 1 Appendix Figure 4 Appendix Figure 7 As shown, the bottom surface of the support rod 2 is provided with a limiting mechanism 21 for limiting the steel wire rope 31. The limiting mechanism 21 includes a through hole 22 on the support rod 2. Positioning wheels 23 are rotatably arranged on both sides in the through hole 22. The steel wire rope 31 is located between the two positioning wheels 23. The guide wheel 41 is provided with an arc-shaped limiting rod 24 for limiting the steel wire rope 31. The steel wire rope 31 is positioned by the two positioning wheels 23 and the steel wire rope 31 is placed in the guide wheel 41 by the arc-shaped limiting rod 24.

[0045] In practical use, the lifting beam 1 is connected to the lifting equipment via the lifting lug 11, and then moved to the location of the precast component to be lifted. The precast component is connected to the lifting beam 1 via the wire rope 31. The lifting equipment then moves the lifting beam 1 upward, and the wire rope 31 gradually tightens and drives the L-shaped plate 4 to rotate. At the same time, the wire rope 31 pushes the support rod 2 to slide. The rotation of the L-shaped plate 4 drives the fixing mechanism 6 and the transmission mechanism 8. When the wire rope 31 is vertical, the fixing mechanism 6 fixes the support rod 2 to the lifting beam 1, and the transmission mechanism 8 drives the four clamping plates 7 to clamp the precast component. This effectively prevents the precast component from swaying during the lifting process. At the same time, the wire rope 31 is in a vertical state, with uniform force, which extends the service life of the wire rope 31. Then, the precast component is lifted to the designated position. When it is necessary to adjust the inclination, the motor is started. The motor drives the rotating mechanism 5, and the rotating mechanism 5 drives the two winding rollers 3 to wind and unwind respectively, thereby adjusting the inclination of the precast component, aligning the precast component, and then fixing the precast component to complete the lifting.

[0046] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A cable hoisting device for arch bridge construction, comprising a lifting beam (1), wherein the lifting beam (1) is provided with lifting lugs (11), characterized in that: The lifting beam (1) is slidably provided with support rods (2) arranged on both sides. A winding roller (3) is rotatably provided on the support rod (2). A wire rope (31) is wound on the winding roller (3). An L-shaped plate (4) is hinged to one side of the support rod (2). A guide wheel (41) is provided at one end of the L-shaped plate (4). The wire rope (31) passes through the support rod (2) and the guide wheel (41). A rotating mechanism (5) for controlling the rotation of the winding roller (3) is provided on the support rod (2). A fixing mechanism (6) for limiting the position of the support rod (2) is provided on one side of the support rod (2). Four clamping plates (7) are hinged to the lifting beam (1). A transmission mechanism (8) for the L-shaped plate (4) to rotate and drive the four clamping plates (7) to rotate is provided on the lifting beam (1). The support rod (2) is provided with fixed plates (42) arranged on both sides, and the L-shaped plate (4) is provided with rotating shafts (43) arranged on both sides. The rotating shafts (43) are rotatably mounted on the fixed plates (42), and a torsion spring (44) is provided between the end of the rotating shafts (43) and the fixed plates (42). The fixing mechanism (6) includes two L-shaped sliding plates (61) slidably disposed on the bottom surface of the support rod (2). A spring (62) is provided between the L-shaped sliding plate (61) and the support rod (2). Multiple toothed grooves (63) are provided on the inner side of the hanging beam (1). A toothed block (64) that cooperates with the toothed groove (63) is provided at one end of the L-shaped sliding plate (61). A connecting plate (65) is provided on the bottom surface of the support rod (2). A driven wheel (66) is rotatably disposed on the connecting plate (65). A driving block (67) that cooperates with the L-shaped sliding plate (61) is provided on the driven wheel (66). One side of the driving block (67) is an inclined surface. The driving block (67) rotates to drive the L-shaped sliding plate (61) to slide. A drive wheel (68) is provided at one end of the rotating shaft (43). A transmission belt (69) is provided between the drive wheel (68) and the driven wheel (66). The hoisting process tightens the wire rope (31), which in turn drives the L-shaped plate (4) to rotate. The rotation of the L-shaped plate (4) drives the fixing mechanism (6) and the transmission mechanism (8). The transmission mechanism (8) drives the clamping plate (7) to hold the precast component. The fixing mechanism (6) fixes the support rod (2) on the lifting beam (1). The rotating mechanism (5) controls the winding and unwinding of the wire rope (31) to change the inclination of the precast component.

2. The cable hoisting equipment for arch bridge construction according to claim 1, characterized in that: The rotating mechanism (5) includes an insertion hole (51) on the lifting beam (1), a support rod (2) inserted into the insertion hole (51), a rotating shaft (52) rotatably passing through the support rod (2) in the insertion hole (51), a drive wheel (53) rotatably sleeved on the rotating shaft (52) on the support rod (2), the rotating shaft (52) rotates and drives the drive wheel (53) to rotate, a screw (54) is movably inserted into the support rod (2), a moving mechanism (55) is provided on the support rod (2) for the drive wheel (53) to rotate and drive the screw (54) to move, a sleeve (56) is rotatably provided on the screw (54), a transmission gear (57) is provided at one end of the take-up roller (3), a transmission rack (58) that meshes with the transmission gear (57) is slidably provided on the support rod (2), a connecting block (59) is provided on one side of the transmission rack (58), and the other end of the connecting block (59) is fixedly connected to the sleeve (56).

3. The cable hoisting equipment for arch bridge construction according to claim 2, characterized in that: The moving mechanism (55) includes a threaded sleeve (551) rotatably mounted on the support rod (2), the threaded sleeve (551) being threadedly connected to the screw (54), and a driven wheel (552) being provided at one end of the threaded sleeve (551), and a transmission belt (553) being provided between the driving wheel (53) and the driven wheel (552).

4. The cable hoisting equipment for arch bridge construction according to claim 1, characterized in that: The transmission mechanism (8) includes a fixed seat (81) set on the lifting beam (1) and corresponding to the clamping plate (7). A second torsion spring (82) is provided between the clamping plate (7) and the lifting beam (1). A rotating shaft (83) is rotatably arranged on both sides of the fixed seat (81). A gear (84) is interlaced on the rotating shaft (83). A rack (85) meshing with the gear (84) is slidably provided on the fixed seat (81). A connecting rod (86) is movably inserted into one end of the rack (85). A second spring is provided between the connecting rod (86) and the rack (85). A push block (87) abutting against the clamping plate (7) is provided at one end of the connecting rod (86). A connecting frame (88) is slidably provided on the bottom surface of the lifting beam (1). The L-shaped plate (4) rotates and pushes the connecting frame (88) to move down. A linkage mechanism (9) is provided between the connecting frame (88) and the lifting beam (1) to drive the two rotating shafts (83) to rotate in opposite directions.

5. The cable hoisting equipment for arch bridge construction according to claim 4, characterized in that: The linkage mechanism (9) includes a plug (91) set on the connecting frame (88), the plug (91) passes through the hanging beam (1), a return spring (92) is provided between one end of the plug (91) and the hanging beam (1), a gear (93) is provided at one end of the rotating shaft (83), an extension frame (94) is provided on the plug (91), and a rack (95) meshing with the gear (93) is provided on the extension frame (94).

6. The cable hoisting equipment for arch bridge construction according to claim 1, characterized in that: The bottom surface of the support rod (2) is provided with a limiting mechanism (21) for limiting the wire rope (31). The limiting mechanism (21) includes a through hole (22) on the support rod (2). Positioning wheels (23) are rotatably arranged on both sides in the through hole (22). The wire rope (31) is located between the two positioning wheels (23). An arc-shaped limiting rod (24) for limiting the wire rope (31) is provided on the guide wheel (41).

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