Stay cable replacement device for cable-stayed bridge

Abstract

The invention discloses a stay cable replacement device for a cable-stayed bridge, and belongs to the technical field of stay cable replacement devices. Comprising a to-be-replaced stay cable, the two ends of the to-be-replaced stay cable are installed between a cable tower and a cable-stayed bridge girder through anchorage devices, the device further comprises a sleeve, a cross-core type hydraulic jack, a first stay cable limiting stopper, a sliding barrel, a new stay cable, a wire guiding assembly and a winding device, and the to-be-replaced stay cable movably penetrates through the sleeve; the stay cable to be replaced movably penetrates through the center hole hydraulic jack, and a first U-shaped base plate is arranged between the center hole hydraulic jack and the sleeve. The stay cable to be replaced movably penetrates through the first stay cable limiting device, and the center hole type hydraulic jack abuts against the first stay cable limiting device. The device for replacing the stay cable of the cable-stayed bridge can be used for replacing the stay cable of a plurality of steel strands, can efficiently and conveniently complete disassembly of the stay cable to be replaced and replacement traction of a new stay cable, facilitates cable force adjustment of the new stay cable, and is high in adjustment precision.

Description

Technical Field

[0001] The present invention specifically relates to a device for replacing a stay cable of a cable-stayed bridge, and belongs to the technical field of devices for replacing stay cables. Background Art

[0002] A cable-stayed bridge is a type of bridge in which the main beam is directly pulled on the bridge tower by many cables. It is a structural system composed of pressure-bearing towers, tensioned cables and bending beams. A cable-stayed bridge is mainly composed of cable towers, main beams and cables. During long-term use, the cables of a cable-stayed bridge will have various diseases, including: rust on the upper and lower anchor heads; aging, cracking and damage of the PE sheath; fatigue wire breakage of the cable body; corrosion of the cable; when the cable in the PE pipe is damaged, it needs to be replaced in time. Existing cable replacement equipment, such as the China Patent Authorization Announcement No.: CN102286944B, discloses a cable-stayed bridge cable replacement device, which is used for replacing the cable to be replaced connected to the main beam of the cable-stayed bridge. During replacement, the cable force can be controlled and monitored in real time through a computer data acquisition system, and can adapt to the replacement of cables with different angles and lengths, and has strong universality; but since the PE pipe and protective structure outside the cable have been laid out, the replacement device cannot be applied to the stranded cable, and the insertion process of the new cable is relatively cumbersome. In addition, the cable force adjustment of the new cable is cumbersome, and the adjustment accuracy cannot be guaranteed. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a cable-stayed bridge cable-stayed cable replacement device, which can be used to replace the cable-stayed cables of multiple steel strands, and can efficiently and conveniently complete the disassembly of the cable-stayed cables to be replaced and the replacement traction of new cable-stayed cables, and is convenient for adjusting the cable force of the new cable-stayed cables with high adjustment accuracy.

[0004] The cable-stayed bridge cable replacement device of the present invention comprises a cable to be replaced, wherein both ends of the cable to be replaced are installed between a cable tower and a main beam of the cable-stayed bridge through anchors, and further comprises A sleeve, wherein a clip withdrawal notch is provided on the sleeve, and the inclined cable to be replaced movably passes through the sleeve; A through-type hydraulic jack, wherein the cable to be replaced movably passes through the through-type hydraulic jack, and a first U-shaped pad is provided between the through-type hydraulic jack and the sleeve; A first cable stopper, the inclined cable to be replaced movably passes through the first cable stopper, and the through-type hydraulic jack is pressed against the first cable stopper; A slide cylinder, wherein the outer diameter of the slide cylinder is smaller than the anchor hole of the anchor; the slide cylinder comprises a first slide cylinder and a second slide cylinder, the bottom end of the inclined cable to be replaced movably penetrates into the first slide cylinder and is welded to the first slide cylinder as a whole; the first slide cylinder and the second slide cylinder are connected by a connecting rod, a chain or a steel wire; A new inclined cable, the end of which is movably inserted into the second slide cylinder and welded to the second slide cylinder as a whole; the new inclined cable is wound on the electric unwinding device of the steel strand; A conductor assembly, wherein two groups of conductor assemblies are arranged respectively on the upper part of a new inclined cable and the top of a cable to be replaced; the conductor assembly comprises a slot seat, a first manual slide and a second manual slide are fixed on both sides of the slot on the top of the slot seat, a wheel seat is fixed on the sliders of the first manual slide and the second manual slide, and an industrial wheel is installed on the wheel seat; the industrial wheel clamps the inclined cable to be replaced or the new inclined cable.

[0005] A winding device, on which the top of the inclined cable to be replaced is wound.

[0006] When the inclined cable to be replaced is replaced, the sleeve, the first U-shaped pad, the through-type hydraulic jack and the first cable limiter are passed through the end of the inclined cable to be replaced in sequence, and then the inclined cable to be replaced is locked by the first cable limiter, and then the through-type hydraulic jack is turned on, and the sleeve and the first cable limiter are lifted at both ends of the through-type hydraulic jack respectively. At this time, the movable clip in the anchor is pulled outward by a clip removal tool such as a puller, so as to remove the movable clip from the anchor, and then, the first slide cylinder is fixed at the bottom of the inclined cable to be replaced, and the new inclined cable is fixed to the second slide cylinder, the new inclined cable is unwound by the steel strand electric unwinding device, and the new inclined cable is guided by the wire assembly, the top of the inclined cable to be replaced is guided by the wire assembly and pulled to the winding device; then, the through-type The hydraulic jack is unloaded. At this time, the first U-shaped pad and the first cable limiter (the second U-shaped pad and the third U-shaped pad, and the clip of the movable anchor) are removed in turn; at this time, the winding device is activated, and the replaced cable is wound up. During winding, the slide and the new cable are passed through the anchor hole of the movable anchor, the inside of the through-type hydraulic jack, the inside of the sleeve, the anchor hole of the anchor of the main beam of the cable-stayed bridge, the PE pipe and the anchor hole of the anchor of the protective structure and the cable tower in turn; then, the clip is embedded in the anchor hole of the anchor to temporarily lock the new cable, and finally, the new cable is cut off flush with the end of the second slide, and the new cable is cut off at the anchor end of the main beam of the cable-stayed bridge. The set length needs to be reserved for cutting; after cutting, the through-type hydraulic jack and the sleeve are removed, and the cable force of the new cable is adjusted.

[0007] Furthermore, a plurality of through holes are formed at one end of the first slide and the second slide close to each other, and the steel wire is composed of the to-be-replaced inclined cable and the new inclined cable, and the steel wire manufacturing process is as follows: the to-be-replaced inclined cable and the new inclined cable are decomposed into steel strands at one end close to each other to obtain a plurality of steel wires, and steel wires corresponding to the number of through holes are reserved, and the excess steel wires are cut and then embedded into the first slide or the second slide, and the steel wires are passed through the through holes, and the steel wires facing the to-be-replaced inclined cable and the new inclined cable are clamped or welded and fixed by steel wire buckles; the first slide and the second slide serve as covering parts at the ends of the to-be-replaced inclined cable and the new inclined cable, and also serve as transition parts between the to-be-replaced inclined cable and the new inclined cable, part of the steel wires of the to-be-replaced inclined cable and the new inclined cable pass through the first slide and the second slide, and the steel wires are fastened together by the steel wire buckle, and when the to-be-replaced inclined cable is pulled, the first slide, the steel wire, the second slide and the new inclined cable can be pulled synchronously in sequence.

[0008] Furthermore, the first slide cylinder and the second slide cylinder are olive-shaped structures, one end of the first slide cylinder and the second slide cylinder is closed, and the other end is provided with a threading port, the first slide cylinder and the second slide cylinder are provided with hinge holes at the closed end, and the two hinge holes are connected by a chain or a steel wire; a welding port is provided on the first slide cylinder and the second slide cylinder; one end of the first slide cylinder and the second slide cylinder serves as a fastener for the replaced inclined cable and the new inclined cable, and the other end is connected as a whole by a chain or a steel wire; when the replaced inclined cable is towed, the first slide cylinder can be towed, and the second slide cylinder can be synchronously towed through the first slide cylinder, thereby synchronously driving the new inclined cable to be towed.

[0009] Furthermore, the first cable limiter includes a second U-shaped pad and a third U-shaped pad; the second U-shaped pad and the third U-shaped pad are overlapped with each other, and the openings are facing opposite directions; the second U-shaped pad and the third U-shaped pad are clamped between the through-type hydraulic jack and the first slide cylinder; by overlapping the second U-shaped pad and the third U-shaped pad, and facing the openings in opposite directions, a support system can be formed between the through-type hydraulic jack and the first slide cylinder.

[0010] Furthermore, the first cable limiter includes a movable anchor, and the bottom of the to-be-replaced inclined cable is movably passed through the movable anchor and embedded with a clip, and a fourth U-shaped pad is arranged between the through-type hydraulic jack and the clip; the fourth U-shaped pad is pressed against the clip; when the first cable limiter is installed, the new inclined cable is movably passed through the movable anchor, and the clip is embedded in the movable anchor, and the new inclined cable is temporarily locked by the clip; at this time, the first cable limiter can provide a support system for one end of the through-type hydraulic jack.

[0011] Furthermore, the new cable-stayed cable is movably pulled into the anchors on the cable tower and the main beam of the cable-stayed bridge, and the anchor includes a convex anchor head embedded in the embedded pipe; a hole-shaped pad is provided between the convex anchor head and the embedded pipe; a nut that is tightened with the pad is screwed on the convex anchor head; a limiting clip that is clamped with the new cable-stayed cable is movably embedded on the inner side of the anchor; the two ends of the new cable-stayed cable are first limited by the limiting clip positioning clamp, and then the two ends of the new cable-stayed cable are adjusted to the set cable tension by the cable force regulator; when the new cable-stayed cable is pulled through the existing PE pipe and protective structure, the two ends of the new cable-stayed cable pass through the embedded pipe, the convex anchor head and the pad, and then, the limiting clip is embedded in the anchor hole of the convex anchor head, the new cable-stayed cable is temporarily clamped by the limiting clip, and then the cable tension of the two ends of the new cable-stayed cable and the anchor is adjusted in turn by the limiting clip positioning clamp and the cable force regulator.

[0012] Furthermore, the limit clip positioning clamp includes a stand screwed onto the convex anchor head, the stand includes a ring seat screwed onto the convex anchor head, the ring seat is fixed with a hole seat via a plurality of pillars, a second hydraulic jack is fixed to the inner side of the hole seat; the second hydraulic jack is movably pressed with the outer end of the limit clip; a second cable limiter is arranged on the outside of the hole seat; a third hydraulic jack is arranged between the second cable limiter and the hole seat; the new inclined cable movably passes through the second hydraulic jack, the third hydraulic jack and the second cable limiter; a first pressure transmitter is arranged between the third hydraulic jack and the second cable limiter. During operation, the single-strand inclined cable is adjusted in cable force through the limit clip positioning clamp, the third hydraulic jack is actuated, one end of the third hydraulic jack is limited by the frame, and the other end lifts the second cable limiter, and the second cable limiter moves to the side away from the frame. During movement, the new inclined cable is synchronously pulled, and the cable force is monitored through the first pressure transmitter. When the cable force reaches the set value, the third hydraulic jack locks the current position, and then the second hydraulic jack is actuated, one end of the second hydraulic jack is limited by the hole seat, and when the other end is lifted, the limit clip is pushed into the anchor, so that the new inclined cable is anchored through the cooperation of the limit clip and the anchor, the second hydraulic jack and the third hydraulic jack are uninstalled, and finally the limit clip positioning clamp is disassembled.

[0013] Furthermore, the cable force regulator includes a rear seat plate, a plurality of studs are movably passed through the rear seat plate, the studs are screwed to the pad and arranged on the outside of the convex anchor head; a pull sleeve is screwed to the convex anchor head, a movable seat is arranged inside the pull sleeve, and a fourth hydraulic jack is fixed to the outside of the rear seat plate; a second pressure transmitter is arranged between the pull sleeve and the movable seat; when installing, the piston rod of the fourth hydraulic jack is fixed to the movable seat; when the overall cable force of the convex anchor head is adjusted, the fourth hydraulic jack The pressure jack pulls the movable seat to move. When the movable seat moves, the movable seat synchronously pulls the pulling sleeve in a straight line. The second pressure transmitter monitors the tension value in real time. Since the convex anchor head and the pulling sleeve are in a rotational state, at this time, the pulling sleeve synchronously pulls the convex anchor head. When the convex anchor head is pulled to the set value, the fourth hydraulic jack locks the current position. Then, the nut is rotated to press the nut against the pad. After the rotation is completed, the set value of the new inclined cable is locked, the cable force adjustment is completed, the fourth hydraulic jack is uninstalled, and the cable force regulator is disassembled.

[0014] Compared with the prior art, the cable-stayed bridge cable-stayed cable replacement device of the present invention can replace one or more strands of steel wire ropes on the same anchor in sequence. During replacement, one replacement device can be used to disassemble the cable to be replaced and loosen the cable to be replaced, and then the new cable and the cable to be replaced are connected as one, and during the disassembly and winding process of the cable to be replaced, the new cable can be synchronously pulled to the replacement position. The replacement of the new cable is simple and convenient. After the new cable is replaced in place, the cable force at both ends of the new cable can be adjusted by the limit clip positioning clamp and the cable force regulator. When adjusting the cable force, the cable force of the single strand cable is adjusted first, and then the cable force of the anchor as a whole is adjusted once. The cable force adjustment is convenient and the adjustment accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the device for replacing a stay cable according to the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the partially enlarged structure at center A; Figure 3 It is a schematic structural diagram of a connection embodiment of the first slide cylinder and the second slide cylinder of the present invention; Figure 4 It is a schematic structural diagram of another embodiment of the connection between the first slide cylinder and the second slide cylinder of the present invention; Figure 5 It is a structural schematic diagram of a connection embodiment of the first cable stopper and the inclined cable to be replaced of the present invention; Figure 6 It is a schematic diagram of the installation structure of the second U-shaped pad and the third U-shaped pad of the present invention; Figure 7It is a structural schematic diagram of another connection embodiment of the first cable limiter and the inclined cable to be replaced of the present invention.

[0016] Figure 8 It is a schematic diagram of the installation structure of the limit clip positioning clamp and the new inclined cable of the present invention; Fig. 9 It is a schematic diagram of the installation structure of the cable force regulator and anchor of the present invention.

[0017] Figure numerals: 1. Cable to be replaced, 2. Tower, 3. Main beam of cable-stayed bridge, 4. Sleeve, 5. Clip notch, 6. Through-type hydraulic jack, 7. First U-shaped pad, 8. First slide, 9. Second slide, 10. Steel wire, 11. New cable, 12. Electric unwinding device for steel strand, 13. Slot seat, 14. First manual slide, 15. Second manual slide, 16. Wheel seat, 17. I-shaped wheel, 18. Winding device, 19. Second U-shaped pad, 20. Third U-shaped Pad, 21. movable anchor, 22. PE pipe, 23. Steel thread buckle, 24. Hinge hole, 25. Welding port, 26. Fourth U-shaped pad, 27. Convex anchor head, 28. Embedded pipe, 29. Pad, 30. Nut, 31. Ring seat, 32. Pillar, 33. Hole seat, 34. Second hydraulic jack, 35. Second cable limiter, 36. Third hydraulic jack, 37. Rear seat plate, 38. Stud, 39. Pull sleeve, 40. Movable seat, 41. Fourth hydraulic jack. DETAILED DESCRIPTION

[0018] Embodiment 1: like Figures 1 to 9 The cable-stayed bridge cable replacement device shown in the figure comprises a cable-stayed cable 1 to be replaced, both ends of which are installed between a cable tower 2 and a main beam 3 of the cable-stayed bridge through anchors, and further comprises A sleeve 4, wherein a clip withdrawal notch 5 is formed on the sleeve 4, and the inclined cable 1 to be replaced movably passes through the sleeve 4; A through-type hydraulic jack 6, wherein the to-be-replaced stay cable 1 movably passes through the through-type hydraulic jack 6, and a first U-shaped pad 7 is provided between the through-type hydraulic jack 6 and the sleeve 4; A first cable stopper, wherein the inclined cable 1 to be replaced movably passes through the first cable stopper, and the through-type hydraulic jack 6 is pressed against the first cable stopper; A slide cylinder, the outer diameter of which is smaller than the anchor hole of the anchor; the slide cylinder comprises a first slide cylinder 8 and a second slide cylinder 9, the bottom end of the inclined cable 1 to be replaced movably penetrates into the first slide cylinder 8 and is welded to the first slide cylinder 8 as a whole; the first slide cylinder 8 and the second slide cylinder 9 are connected by a connecting rod, a chain or a steel wire 10; A new inclined cable 11, the end of which is movably inserted into the second slide cylinder 9 and welded to the second slide cylinder 9 as a whole; the new inclined cable 11 is wound on the steel strand electric unwinding device 12; A conductor assembly, wherein two groups of conductor assemblies are provided and are respectively provided on the upper part of the new inclined cable 11 and the top of the inclined cable 1 to be replaced; the conductor assembly comprises a slot seat 13, a first manual slide 14 and a second manual slide 15 are fixed on the top of the slot seat 13 on both sides of the slot, a wheel seat 16 is fixed on the sliders of the first manual slide 14 and the second manual slide 15, and a work-shaped wheel 17 is installed on the wheel seat 16; the work-shaped wheel 17 clamps the inclined cable 1 to be replaced or the new inclined cable 11, and the two work-shaped wheels 17 are driven to move closer to or away from each other by the first manual slide 14 and the second manual slide 15, so as to clamp and guide the inclined cable 1 to be replaced or the new inclined cable 11; The winding device 18 is used for winding the top of the inclined cable 1 to be replaced.

[0019] When the inclined cable 1 to be replaced is replaced, the sleeve 4, the first U-shaped pad 7, the through-type hydraulic jack 6 and the first cable limiter are passed through the end of the inclined cable 1 to be replaced in sequence, and then the inclined cable 1 to be replaced is locked by the first cable limiter, and then the through-type hydraulic jack 6 is opened, and the sleeve 4 and the first cable limiter are lifted at both ends of the through-type hydraulic jack 6. At this time, the movable clip in the anchor is pulled outward by a clip removal tool such as a puller, so as to remove the movable clip from the anchor, and then, the first slide cylinder 8 is fixed at the bottom of the inclined cable 1 to be replaced, and the new inclined cable 11 is fixed to the second slide cylinder 9, the new inclined cable 11 is unwound by the steel strand electric unwinding device 12, and the new inclined cable 11 is guided by the wire assembly, and the top of the inclined cable 1 to be replaced is guided by the wire assembly and pulled to the winding device 18; then, the through-type hydraulic jack 6 unloading, at this time, the first U-shaped pad 7 and the first cable limiter (the second U-shaped pad 19 and the third U-shaped pad 20, the clip of the movable anchor 21) are removed in sequence; at this time, the winding device 18 is activated, and the inclined cable 1 to be replaced is wound up. During winding, the slide and the new inclined cable 11 are successively passed through the anchor hole of the movable anchor 21, the inside of the through-type hydraulic jack 6, the inside of the sleeve 4, the anchor hole of the anchor of the main beam 3 of the cable-stayed bridge, the PE pipe 22 and the anchor hole of the anchor of the protective structure and the cable tower 2; then, the clip is embedded in the anchor hole of the anchor to temporarily lock the new inclined cable 11, and finally, the end of the new inclined cable 11 close to the second slide 9 is cut off flush, and the end of the new inclined cable 11 close to the anchor of the main beam 3 of the cable-stayed bridge is cut off, and the set length needs to be reserved for cutting; after cutting, the through-type hydraulic jack 6 and the sleeve 4 are removed, and the cable force of the new inclined cable 11 is adjusted.

[0020] The first slide cylinder 8 and the second slide cylinder 9 are provided with a plurality of through holes at one end close to each other. The steel wire 10 is composed of the to-be-replaced inclined cable 1 and the new inclined cable 11. The manufacturing process of the steel wire 10 is as follows: the to-be-replaced inclined cable 1 and the new inclined cable 11 are decomposed into steel strands at one end close to each other to obtain a plurality of steel wires 10, and steel wires 10 consistent with the number of through holes are reserved, and the excess steel wires 10 are cut and embedded in the first slide cylinder 8 or the second slide cylinder 9, and the steel wires 10 are passed through the through holes at the same time. The to-be-replaced inclined cable 1 and the new inclined cable 11 are opposite to each other. The steel wire 10 is clamped or welded by the steel wire buckle 23; the first slide cylinder 8 and the second slide cylinder 9 serve as covering parts for the ends of the inclined cable 1 to be replaced and the new inclined cable 11, and also serve as transition parts between the inclined cable 1 to be replaced and the new inclined cable 11. Part of the steel wire 10 of the inclined cable 1 to be replaced and the new inclined cable 11 passes through the first slide cylinder 8 and the second slide cylinder 9, and is fastened together by the steel wire buckle 23. When the inclined cable 1 to be replaced is pulled, the first slide cylinder 8, the steel wire 10, the second slide cylinder 9 and the new inclined cable 11 can be pulled synchronously in sequence.

[0021] The first slide cylinder 8 and the second slide cylinder 9 are olive-shaped structures, one end of the first slide cylinder 8 and the second slide cylinder 9 is closed, and the other end is provided with a threading port, the first slide cylinder 8 and the second slide cylinder 9 are provided with a hinge hole 24 at the closed end, and the two hinge holes 24 are connected by a chain or a steel wire 10; the first slide cylinder 8 and the second slide cylinder 9 are provided with a welding port 25; one end of the first slide cylinder 8 and the second slide cylinder 9 serves as a fastener for the replaced inclined cable 1 and the new inclined cable 11, and the other end is connected as a whole by a chain or a steel wire 10; when the replaced inclined cable 1 is pulled, the first slide cylinder 8 can be pulled, and the second slide cylinder 9 can be pulled synchronously through the first slide cylinder 8, thereby synchronously driving the new inclined cable 11 to be pulled.

[0022] The first cable limiter includes a second U-shaped pad 19 and a third U-shaped pad 20; the second U-shaped pad 19 and the third U-shaped pad 20 overlap each other, and the openings are facing opposite directions; the second U-shaped pad 19 and the third U-shaped pad 20 are clamped between the through-type hydraulic jack 6 and the first slide 8; by overlapping the second U-shaped pad 19 and the third U-shaped pad 20 and facing the openings in opposite directions, a support system can be formed between the through-type hydraulic jack 6 and the first slide 8.

[0023] The first cable limiter includes a movable anchor 21, and the bottom of the to-be-replaced inclined cable 1 is movably passed through the movable anchor 21 and embedded with a clip, and a fourth U-shaped pad 26 is arranged between the through-type hydraulic jack 6 and the clip; the fourth U-shaped pad 26 is tightly pressed against the clip; when the first cable limiter is installed, the new inclined cable 11 is movably passed through the movable anchor 21, and the clip is embedded in the movable anchor 21, and the new inclined cable 11 is temporarily locked by the clip; at this time, the first cable limiter can provide a support system for one end of the through-type hydraulic jack 6.

[0024] The new cable-stayed cable 11 is movably pulled into the anchorage on the tower 2 and the main beam 3 of the cable-stayed bridge, and the anchorage includes a convex anchor head 27 embedded in the embedded pipe; a hole-shaped pad 29 is provided between the convex anchor head 27 and the embedded pipe 28; a nut 30 is screwed on the convex anchor head 27 and pressed against the pad 29; a limiting clip is movably embedded inside the anchorage to clamp the new cable-stayed cable 11; the two ends of the new cable-stayed cable 11 are first limited by the limiting clip positioning clamp, and then The two ends of the new inclined cable 11 are adjusted to the set cable tension through the cable force regulator; when the new inclined cable 11 is pulled through the existing PE pipe 22 and the protective structure, the two ends of the new inclined cable 11 pass through the embedded pipe 28, the convex anchor head 27 and the pad 29, and then, the limit clip is embedded into the anchor hole of the convex anchor head 27, and the new inclined cable 11 is temporarily clamped by the limit clip, and then the cable tension of the two ends of the new inclined cable 11 and the anchor is adjusted in turn by the limit clip positioning clamp and the cable force regulator.

[0025] The limiting clip positioning clamp includes a stand screwed onto the convex anchor head 27, the stand includes a ring seat 31 screwed onto the convex anchor head 27, the ring seat 31 is fixed with a hole seat 33 through a plurality of pillars 32, a second hydraulic jack 34 is fixed to the inner side of the hole seat 33; the second hydraulic jack 34 is movably pressed with the outer end of the limiting clip; a second cable limiter 35 is arranged outside the hole seat 33; a third hydraulic jack 36 is arranged between the second cable limiter 35 and the hole seat 33; the new inclined cable 11 movably passes through the second hydraulic jack 34, the third hydraulic jack 36 and the second cable limiter 35; a first pressure transmitter is arranged between the third hydraulic jack 36 and the second cable limiter 35. During operation, the cable force of the single-strand inclined cable is adjusted by the limit clip positioning clamp, the third hydraulic jack 36 is actuated, one end of the third hydraulic jack 36 is limited by the frame, and the other end lifts the second cable limiter 35, and the second cable limiter 35 moves to the side away from the frame. During movement, the new inclined cable 11 is synchronously pulled, and the cable force is monitored through the first pressure transmitter. When the cable force reaches the set value, the third hydraulic jack 36 locks the current position, and then the second hydraulic jack 34 is actuated, one end of the second hydraulic jack 34 is limited by the hole seat 33, and when the other end is lifted, the limit clip is pushed into the anchor, so that the new inclined cable 11 is anchored through the cooperation of the limit clip and the anchor, the second hydraulic jack 34 and the third hydraulic jack 36 are unloaded, and finally the limit clip positioning clamp is disassembled.

[0026] The cable force regulator includes a rear seat plate 37, and a plurality of studs 38 are movably passed through the rear seat plate 37. The studs 38 are screwed to the pad 29 and arranged outside the convex anchor head 27; a pull sleeve 39 is screwed to the convex anchor head 27, and a movable seat 40 is arranged inside the pull sleeve 39, and a fourth hydraulic jack 41 is fixed to the outside of the rear seat plate 37; the pull sleeve 39 is provided with a second pressure transmitter between the movable seat 40 and the fourth hydraulic jack 41; when installing, the piston rod of the fourth hydraulic jack 41 is fixed to the movable seat 40; when the overall cable force of the convex anchor head 27 is adjusted, the fourth hydraulic jack 41 is fixed to the movable seat 40; The pressure jack 41 pulls the movable seat 40 to move. When the movable seat 40 moves, the movable seat 40 synchronously pulls the pull sleeve 39 in a straight line. The second pressure transmitter monitors the tension value in real time. Since the convex anchor head 27 and the pull sleeve 39 are in a rotational state, at this time, the pull sleeve 39 synchronously pulls the convex anchor head 27. When the convex anchor head 27 is pulled to the set value, the fourth hydraulic jack 41 locks the current position, and then rotates the nut 30 to press the nut 30 and the pad 29. After the rotation is completed, the set value of the new inclined cable 11 is locked, the cable force adjustment is completed, the fourth hydraulic jack 41 is uninstalled, and the cable force regulator is disassembled.

[0027] The above embodiments are only preferred implementations of the present invention, so any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A cable-stayed bridge cable replacement device, comprising a cable to be replaced, wherein both ends of the cable to be replaced are installed between a cable tower and a main beam of the cable-stayed bridge through anchors, and characterized in that: Also includes: A sleeve, wherein a clip recess is formed on the sleeve, and the inclined cable to be replaced movably passes through the sleeve; A through-type hydraulic jack, wherein the cable to be replaced movably passes through the through-type hydraulic jack, and a first U-shaped pad is provided between the through-type hydraulic jack and the sleeve; A first cable stopper, the inclined cable to be replaced movably passes through the first cable stopper, and the through-type hydraulic jack is pressed against the first cable stopper; A slide cylinder, wherein the outer diameter of the slide cylinder is smaller than the anchor hole of the anchor; the slide cylinder comprises a first slide cylinder and a second slide cylinder, the bottom end of the inclined cable to be replaced movably penetrates into the first slide cylinder and is welded to the first slide cylinder as a whole; the first slide cylinder and the second slide cylinder are connected by a connecting rod, a chain or a steel wire; A new inclined cable, the end of which is movably inserted into the second slide cylinder and welded to the second slide cylinder as a whole; the new inclined cable is wound on the electric unwinding device of the steel strand; Conductor assembly, wherein two groups of the conductor assembly are provided and are respectively arranged on the upper part of the new inclined cable and the top of the inclined cable to be replaced; A winding device, on which the top of the inclined cable to be replaced is wound.

2. The cable-stayed bridge cable replacement device according to claim 1, characterized in that: The first slide cylinder and the second slide cylinder are provided with a plurality of through holes at one end close to each other, and the steel wire is composed of the inclined cable to be replaced and the new inclined cable. The steel wire manufacturing process is as follows: the inclined cable to be replaced and the new inclined cable are decomposed into steel strands at one end close to each other to obtain a plurality of steel wires, and steel wires consistent with the number of through holes are reserved, and the excess steel wires are cut and embedded in the first slide cylinder or the second slide cylinder, and the steel wires are passed through the through holes at the same time, and the steel wires facing the inclined cable to be replaced and the new inclined cable are clamped or welded with steel wire buckles.

3. The device for replacing the cable-stayed bridge cable according to claim 1, characterized in that: The first slide cylinder and the second slide cylinder are olive-shaped structures, one end of the first slide cylinder and the second slide cylinder are closed, and the other end is provided with a threading port, the first slide cylinder and the second slide cylinder are provided with hinge holes at the closed end, and the two hinge holes are connected by a chain or steel wire; the first slide cylinder and the second slide cylinder are provided with welding ports.

4. The cable-stayed bridge cable replacement device according to claim 1, characterized in that: The first cable limiter includes a second U-shaped pad and a third U-shaped pad; the second U-shaped pad and the third U-shaped pad overlap each other, and the openings face oppositely; the second U-shaped pad and the third U-shaped pad are clamped between the through-type hydraulic jack and the first slide cylinder.

5. The device for replacing the cable-stayed bridge cable according to claim 1, characterized in that: The first cable limiter includes a movable anchor, the bottom of the inclined cable to be replaced movably passes through the movable anchor and is embedded in the clamp, and a fourth U-shaped pad is arranged between the through-type hydraulic jack and the clamp; the fourth U-shaped pad is pressed tightly against the clamp.

6. The cable-stayed bridge cable replacement device according to claim 1, characterized in that: The new cable-stayed cable is movably pulled into the anchors on the tower and the main beam of the cable-stayed bridge, and the anchors include a convex anchor head embedded in the embedded pipe; a hole-shaped pad is provided between the convex anchor head and the embedded pipe; a nut that is tightened with the pad is screwed on the convex anchor head; a limiting clip that is clamped with the new cable-stayed cable is movably embedded on the inner side of the anchor; the two ends of the new cable-stayed cable are first limited by the limiting clip positioning clamp, and then the two ends of the new cable-stayed cable are adjusted to the set cable force by the cable force regulator.

7. The cable-stayed bridge cable replacement device according to claim 6, characterized in that: The limit clip positioning clamp includes a stand screwed onto the convex anchor head, the stand includes a ring seat screwed onto the convex anchor head, the ring seat is fixed with a hole seat via a plurality of pillars, a second hydraulic jack is fixed to the inner side of the hole seat; the second hydraulic jack is movably pressed with the outer end of the limit clip; a second cable limiter is arranged outside the hole seat; a third hydraulic jack is arranged between the second cable limiter and the hole seat; the new inclined cable movably passes through the second hydraulic jack, the third hydraulic jack and the second cable limiter; a first pressure transmitter is arranged between the third hydraulic jack and the second cable limiter.

8. The cable-stayed bridge cable replacement device according to claim 6, characterized in that: The cable force regulator includes a rear seat plate, on which multiple studs are movably passed, the studs are screwed to the pad and arranged on the outside of the convex anchor head; a pull sleeve is screwed on the convex anchor head, a movable seat is arranged on the inner side of the pull sleeve, and a fourth hydraulic jack is fixed to the outside of the rear seat plate; a second pressure transmitter is arranged on the pull sleeve between the movable seat and the fourth hydraulic jack.

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