Steel strand stay cable dismantling device and method

Abstract

The invention discloses a steel strand stay cable dismantling device and method, and relates to the technical field of bridge construction, the device comprises a platform and a hydraulic releasing assembly used for releasing a steel strand, one end of the hydraulic releasing assembly is provided with a rotating part rotationally connected with the platform, and the other end of the hydraulic releasing assembly is provided with a hydraulic cylinder; a first jack used for enabling the hydraulic releasing assembly to rotate around the rotating part is arranged between the hydraulic releasing assembly and the platform, the hydraulic releasing assembly comprises a first anchoring part and a second anchoring part, and the first anchoring part and the second anchoring part are used for anchoring the steel strand; and the hydraulic telescopic assembly is arranged between the first anchoring part and the second anchoring part so as to release the internal stress of the steel strand between the first anchoring part and the second anchoring part. According to the embodiment of the invention, all components for dismantling the stay cable steel strand are integrated on the platform, the structure is compact, the space is not occupied, meanwhile, the beam end is subjected to release cutting operation, and the safety in the dismantling process of the stay cable steel strand is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a device and method for removing a steel stranded cable. Background Art

[0002] The steel strand cable is a high-strength prestressed component commonly used in cable-stayed bridges and other large bridge structures. It is made of multiple high-strength steel wires twisted together, has excellent tensile properties and durability, and can withstand the huge loads of the bridge. The replacement and maintenance of the steel strand cable is an important part of ensuring the long-term safe operation of the bridge. Since the cable is subjected to dynamic loads and environmental erosion for a long time, fatigue, corrosion or damage may occur, so it needs to be regularly inspected, maintained, and replaced when necessary. From the historical development of cable-stayed bridges in my country, most of the steel strand cables have been in operation for a long time and have entered the replacement cycle.

[0003] There are two main methods for laying out the steel strand cable: tower end operation and beam end laying out and cutting. The former is limited by the operating space and the safety of high-altitude operations, and the industry has gradually begun to abandon its use. In recent years, more and more practitioners have adopted the beam end laying out and cutting method, but most methods are still inefficient. Combined with the current status of industry construction, it is of great significance to study an efficient and safe construction method for laying out the beam end cable. Summary of the invention

[0004] The present application provides a device and method for removing a steel strand cable, which can solve the technical problem of low safety in the tensioning construction of steel strand cables existing in the prior art.

[0005] In a first aspect, an embodiment of the present application provides a device for removing a steel strand cable, comprising: a platform; a hydraulic tensioning assembly for tensioning the steel strand, wherein a rotating part rotatably connected to the platform is provided at one end of the hydraulic tensioning assembly, and a first jack for realizing rotation of the hydraulic tensioning assembly around the rotating part is provided between the hydraulic tensioning assembly and the platform; wherein the hydraulic tensioning assembly comprises a first anchor and a second anchor for anchoring the steel strand, and a hydraulic telescopic assembly provided between the first anchor and the second anchor to realize internal stress release of the steel strand between the first anchor and the second anchor.

[0006] In combination with the first aspect, in one embodiment, it also includes: a second jack and a third jack located on the platform, the hydraulic tensioning assembly is arranged between the second jack and the third jack; a first hook and a second hook for separating the steel strands to be tensioned from the steel strand bundle, the first hook being arranged at an end of the second jack away from the platform, and the second hook being arranged at an end of the third jack away from the platform.

[0007] In combination with the first aspect, in one embodiment, the end of the first hook connected to the steel strand, the hydraulic tensioning assembly, and the end of the second hook connected to the steel strand are arranged in sequence along the inclination direction of the steel strand.

[0008] In combination with the first aspect, in one embodiment, the hydraulic telescopic assembly includes: a piston rod, one end of which is fixedly connected to the first anchor; a hydraulic cylinder sleeved outside the piston rod, one end of the hydraulic cylinder away from the piston rod is fixedly connected to the second anchor; a hydraulic side plate fixedly connected to the hydraulic cylinder; wherein the rotating member includes a rotating shaft and a rotating plate, the rotating plate is arranged on a side of the hydraulic side plate facing the platform, and the rotating plate is provided with a through hole for the rotating shaft to pass through.

[0009] In combination with the first aspect, in one embodiment, it also includes: a first support fixedly connected to the platform, the end of the first support away from the platform is provided with a rotation hole for the rotation shaft to pass through; a second support fixedly connected to the platform, the end of the second support away from the platform is fixedly connected to the first jack.

[0010] In combination with the first aspect, in one embodiment, it further includes: a guide rod, one end of which is fixedly connected to the first anchor, and the other end of which is inserted into a guide hole formed in the second anchor.

[0011] In combination with the first aspect, in one embodiment, it also includes: a platform telescopic assembly, one end of the platform telescopic assembly is slidably connected to a side of the platform away from the hydraulic expansion assembly; a moving assembly, the inner wall of the moving assembly is provided with a slideway for sliding the platform telescopic assembly, and the outer wall of the moving assembly is provided with a pulley for moving the platform.

[0012] In combination with the first aspect, in one embodiment, the first anchor is provided with a first anchor hole, and the first anchor also includes a first clip clamped on both sides of the first anchor hole, and a first locking hole for the steel strand to pass through is formed between the first clip and the first anchor hole; the second anchor is provided with a second anchor hole, and the second anchor also includes a second clip clamped on both sides of the second anchor hole, and a second locking hole for the steel strand to pass through is formed between the second clip and the second anchor hole; wherein the first locking hole is aligned with the second locking hole.

[0013] In the second aspect, an embodiment of the present application provides a method for dismantling a steel strand stay cable, which is performed based on the steel strand stay cable dismantling device described in any of the above embodiments, including: picking up the steel strand to be released, and separating the steel strand to be released from the steel strand bundle, adjusting the first jack so that the hydraulic release assembly is parallel to the steel strand to be released; anchoring the steel strand to be released between the first anchor and the second anchor, tightening the hydraulic release assembly to release the internal stress of the steel strand to be released, and cutting the steel strand to be released after the internal stress is released.

[0014] In combination with the second aspect, in one embodiment, after the steel strands to be tensioned are cut off after the internal stress is released, it also includes: restoring the hydraulic telescopic assembly to an extended state to release the internal stress of the segment connecting the tower end and the connecting beam end of the steel strand harness where the steel strands to be tensioned are located.

[0015] The beneficial effects brought by the technical solution provided by the embodiments of the present application include:

[0016] In the embodiment of the present application, all the components for dismantling the steel strands of the inclined cable are integrated on the platform, which has a compact structure and does not take up space. At the same time, the beam end is released and cut. Compared with the traditional inclined cable steel strand removal, which needs to be carried out at the tower end, it avoids the difficulty of operation due to cramped space and the danger of high-altitude operations, reduces the number of construction personnel and labor intensity, and further improves the safety during the removal of the inclined cable steel strands; when constructing the same inclined cable, the embodiment of the present application does not need to repeatedly adjust the initial position and angle after adjusting them. When constructing different inclined cables in the same fan, it is only necessary to adjust the angle of the hydraulic release assembly through the first jack, which can greatly improve the construction efficiency and reduce the construction cost; the embodiment of the present application sets the hydraulic telescopic assembly, the first anchor and the second anchor as an integrated structure. Compared with the existing separate structure, the hydraulic release assembly disclosed in the embodiment of the present application is simpler in structure, so the failure rate is lower, and the maintenance cost is lower when a failure occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the structure of a steel strand stay cable removal device provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the structure of a hydraulic tensioning assembly provided in an embodiment of the present application;

[0020] Figure 3 A flow chart of a method for removing a steel strand stay cable provided in an embodiment of the present application.

[0021] In the figure: 1. platform; 2. hydraulic tensioning assembly; 21. first anchor; 22. second anchor; 23. hydraulic telescopic assembly; 231. piston rod; 232. hydraulic cylinder; 233. hydraulic side plate; 24. rotating plate; 25. guide rod; 3. first jack; 4. second jack; 5. third jack; 6. first hook; 7. second hook; 8. steel strand; 9. first support; 10. second support; 11. platform telescopic assembly; 111. telescopic member; 112. telescopic rod; 12. moving assembly; 121. slideway; 122. pulley; 13. first clamp; 14. second clamp. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] The present application provides a device and method for removing a steel strand cable, which can solve the technical problem of low safety in the tensioning construction of steel strand cables existing in the prior art.

[0024] Figure 1 A schematic diagram of the structure of a steel strand stay cable removal device provided in an embodiment of the present application. Figure 2 A schematic diagram of the structure of the hydraulic tensioning assembly provided in an embodiment of the present application.

[0025] Combined with reference Figure 1 and Figure 2 The embodiment of the present application provides a steel strand cable removal device, comprising: a platform 1; a hydraulic tensioning assembly 2 for tensioning the steel strand 8, one end of the hydraulic tensioning assembly 2 is provided with a rotating part rotatably connected to the platform 1, and a first jack 3 for realizing the rotation of the hydraulic tensioning assembly 2 around the rotating part is provided between the hydraulic tensioning assembly 2 and the platform 1; wherein the hydraulic tensioning assembly 2 includes a first anchor 21 and a second anchor 22 for anchoring the steel strand 8, and a hydraulic telescopic assembly 23 provided between the first anchor 21 and the second anchor 22 to realize the release of the internal stress of the steel strand 8 between the first anchor 21 and the second anchor 22.

[0026] Specifically, the steel strand cable removal device provided in the embodiment of the present application is arranged at the end of the beam, and the hydraulic telescopic assembly 23 is initially in an extended state. After the first anchor 21 and the second anchor 22 anchor the steel strand 8 to be tensioned, the hydraulic telescopic assembly 23 gradually begins to retract. At this time, the distance between the first anchor 21 and the second anchor 22 becomes closer and closer as the hydraulic telescopic assembly 23 is extended and retracted. Therefore, the steel strand 8 anchored between the first anchor 21 and the second anchor 22 gradually changes from a tensioned state to a relaxed state, and the internal stress of the steel strand 8 is slowly released to zero. At this time, a cutting tool is used to cut off the steel strand 8 between the first anchor 21 and the second anchor 22.

[0027] After the steel strands 8 are cut, the hydraulic expansion assembly 23 gradually resumes the extended state, at which time the internal stress of the segment connecting the tower end and the connecting beam end of the steel strands 8 is released, and the tensioning operation of the steel strands 8 is completed. The cutting tool may be an angle grinder, a hydraulic shear or other tool, which is not limited here.

[0028] The embodiment of the present application integrates all the components for dismantling the steel strands of the inclined cable on the platform 1. The structure is compact and does not occupy space. At the same time, the beam end is opened and cut. Compared with the traditional method of dismantling the steel strands of the inclined cable, which needs to be carried out at the tower end, it avoids the difficulty of operation due to cramped space and the danger of high-altitude operations, reduces the number of construction personnel and labor intensity, and further improves the safety during the dismantling of the steel strands of the inclined cable.

[0029] The embodiment of the present application also includes: a second jack 4 and a third jack 5 located on the platform 1, and the hydraulic tensioning assembly 2 is arranged between the second jack 4 and the third jack 5; a first hook 6 and a second hook 7 for separating the steel strand 8 to be tensioned from the steel strand bundle, the first hook 6 is arranged at the end of the second jack 4 away from the platform 1, and the second hook 7 is arranged at the end of the third jack 5 away from the platform 1.

[0030] Specifically, the first jack 3, the second jack 4 and the third jack 5 are all manual jacks. The first hook 6 and the second hook 7 are respectively connected to the top of the second jack 4 and the third jack 5 through a pin shaft, and the steel strand 8 hooked by the first hook 6 and the second hook 7 is separated from the other steel strands 8 by a hand-cranked lever, and the top surface of the hydraulic tensioning assembly 2 is parallel to the steel strand 8 by manually adjusting the first jack 3.

[0031] In the embodiment of the present application, one end of the first hook 6 connected to the steel strand 8, the hydraulic tensioning assembly 2, and one end of the second hook 7 connected to the steel strand 8 are arranged in sequence along the inclined direction of the steel strand 8.

[0032] Specifically, the height of the second jack 4 is greater than the height of the third jack 5, so that the steel strand cable removal device provided in the embodiment of the present application can adapt to the different inclinations of the steel strand of the cable. At the same time, the first jack 3, the second jack 4 and the third jack 5 are all set as manual jacks. Manual jacks usually have a simple structure and no complex electronic or mechanical components, so the failure rate is low and more reliable. When constructing the same cable, after adjusting the initial position and angle through the second jack 4 and the third jack 5, there is no need to repeat the adjustment. When constructing different cables in the same fan, only the angle of the hydraulic tensioning assembly 2 needs to be adjusted through the first jack 3, which can greatly improve the construction efficiency and reduce the construction cost.

[0033] In the embodiment of the present application, the hydraulic telescopic assembly 23 includes: a piston rod 231, one end of the piston rod 231 is fixedly connected to the first anchor 21; a hydraulic cylinder 232 is sleeved outside the piston rod 231, and one end of the hydraulic cylinder 232 away from the piston rod 231 is fixedly connected to the second anchor 22; a hydraulic side plate 233 fixedly connected to the hydraulic cylinder 232; wherein the rotating part includes a rotating shaft and a rotating plate 24, the rotating plate 24 is arranged on the side of the hydraulic side plate 233 facing the platform 1, and the rotating plate 24 is provided with a through hole for the rotating shaft to pass through.

[0034] Specifically, the piston rod 231 is initially in a state of extending out of the hydraulic cylinder 232. After the first anchor 21 and the second anchor 22 anchor the steel strand 8 to be tensioned, the piston rod 231 gradually begins to retract into the hydraulic cylinder 232 under the action of the hydraulic cylinder 232. At this time, the distance between the first anchor 21 and the second anchor 22 becomes closer and closer as the piston rod 231 retracts. The hydraulic side plate 233 can not only support the first jack 3 to adjust the angle of the hydraulic tensioning assembly 2, but also support the hydraulic tensioning assembly 2 to rotate around the platform 1.

[0035] The embodiment of the present application sets the hydraulic telescopic assembly 23, the first anchor 21 and the second anchor 22 as an integrated structure. Compared with the existing separate structure, the hydraulic expansion assembly 2 disclosed in the embodiment of the present application has a simpler structure, so the failure rate is lower, and the maintenance cost is lower when a failure occurs.

[0036] In the embodiment of the present application, it also includes: a first support 9 fixedly connected to the platform 1, and a rotating hole for the rotating shaft to pass through is opened at the end of the first support 9 away from the platform 1; a second support 10 fixedly connected to the platform 1, and the end of the second support 10 away from the platform 1 is fixedly connected to the first jack 3.

[0037] Specifically, the first support 9 is a hinge support, and the rotating shaft is a pin shaft, which passes through the rotating hole and the through hole to allow the hydraulic tensioning assembly 2 to rotate around the first support 9, so that the angle of the hydraulic tensioning assembly 2 can be adjusted.

[0038] In the embodiment of the present application, it also includes: a guide rod 25, one end of the guide rod 25 is fixedly connected to the first anchor 21, and the other end of the guide rod 25 is inserted into the guide hole opened by the second anchor 22.

[0039] Specifically, the first anchor 21 and the second anchor 22 are both square plate structures. Four guide rods 25 are set at the four corners of the first anchor 21, and four guide holes are opened at the positions corresponding to the second anchor 22. When the piston rod 231 is extended and retracted, the guide rods 25 can improve the stability of the hydraulic tensioning assembly 2 during the tensioning construction, and the hydraulic tensioning assembly 2 has a certain bearing capacity.

[0040] In the embodiment of the present application, it also includes: a platform telescopic component 11, one end of the platform telescopic component 11 is slidably connected to a side of the platform 1 away from the hydraulic expansion component 2; a moving component 12, the inner wall of the moving component 12 is provided with a slideway 121 for sliding of the platform telescopic component 11, and the outer wall of the moving component 12 is provided with a pulley 122 for moving the platform 1.

[0041] Specifically, the platform telescopic assembly 11 includes a telescopic member 111 and a telescopic rod 112. The telescopic member 111 is a hydraulic cylinder. The telescopic rod 112 includes multiple pairs. Under the action of the hydraulic cylinder, the multiple pairs of telescopic rods 112 will cross and move on the slideway 121. When the telescopic rod 112 is extended, the height of the platform 1 is increased, and when the telescopic rod 112 is retracted, the height of the platform 1 is reduced. In this way, the height of the hydraulic tensioning assembly 2 on the platform 1 can be flexibly adjusted to adapt to the cable strands of different heights or inclinations.

[0042] The pulley 122 can make the steel strand cable removal device provided in the embodiment of the present application easily move on the beam surface, so that the operation can be carried out at any position on the beam surface. Compared with the traditional steel strand removal, which needs to be carried out at the tower end, it avoids the difficulty of operation due to cramped space and the danger of high-altitude operation, and reduces the number of construction personnel and labor intensity. At the same time, the moving component 12 also includes a handle, and the construction personnel can use the handle to easily move the entire steel strand cable removal device.

[0043] In the embodiment of the present application, the first anchor 21 is provided with a first anchor hole, and the first anchor 21 also includes a first clip 13 clamped on both sides of the first anchor hole, and a first locking hole for the steel strand 8 to pass through is formed between the first clip 13 and the first anchor hole; the second anchor 22 is provided with a second anchor hole, and the second anchor 22 also includes a second clip 14 clamped on both sides of the second anchor hole, and a second locking hole for the steel strand 8 to pass through is formed between the second clip 14 and the second anchor hole; wherein the first locking hole is aligned with the second locking hole.

[0044] Specifically, the apertures of the first locking hole and the second locking hole are smaller than the cross-sectional diameter of the steel strand 8, so as to achieve clamping and anchoring of the steel strand 8. The steel strand 8 to be released is made to fall into the first anchoring hole and the second anchoring hole by adjusting the first jack 3 or the platform telescopic assembly 11, and then the first clamp 13 and the second clamp 14 are inserted, so as to achieve clamping and anchoring of the steel strand 8 to be released.

[0045] The embodiment of the present application integrates all the components for dismantling the steel strands of the inclined cable on the platform, which has a compact structure and does not take up space. At the same time, the beam end is released and cut. Compared with the traditional inclined cable steel strand removal, which needs to be carried out at the tower end, it avoids the difficulty of operation due to cramped space and the danger of high-altitude operations, reduces the number of construction personnel and labor intensity, and further improves the safety during the removal of the inclined cable steel strands; the embodiment of the present application does not need to repeatedly adjust the initial position and angle after adjusting the same inclined cable during construction. When constructing different inclined cables in the same fan, it is only necessary to adjust the angle of the hydraulic release assembly through the first jack, which can greatly improve the construction efficiency and reduce the construction cost; the embodiment of the present application sets the hydraulic telescopic assembly, the first anchor and the second anchor as an integrated structure. Compared with the existing separate structure, the hydraulic release assembly disclosed in the embodiment of the present application is simpler in structure, so the failure rate is lower, and the maintenance cost is lower when a failure occurs.

[0046] In a second aspect, an embodiment of the present application provides a method for removing a steel strand cable, which is performed based on a steel strand cable removal device according to any of the above embodiments. Figure 3 Flow chart of the method for removing the steel strand cable provided in the embodiment of the present application. Figure 3 , including the following steps:

[0047] In step S1, the steel strands to be released are picked up and separated from the steel strand bundle, and the first jack 3 is adjusted so that the hydraulic release assembly 2 is parallel to the steel strands to be released.

[0048] Specifically, step S1 includes:

[0049] In step S101, the hydraulic tensioning assembly 2 is arranged between the second jack 4 and the third jack 5 located on the platform 1, the first hook 6 and the second hook 7 are respectively connected to the top of the second jack 4 and the third jack 5 through pins, and the steel strands hooked by the first hook 6 and the second hook 7 are separated from the remaining steel strands by a hand-cranked lever.

[0050] In step S102 , the hydraulic tensioning assembly 2 is installed, and the hydraulic tensioning assembly 2 is rotated around the platform 1 through a rotating member to adjust the angle of the hydraulic tensioning assembly 2 .

[0051] In step S103, the first jack 3 fixedly connected to the hydraulic tensioning assembly 2 is moved so that the hydraulic tensioning assembly 2 is parallel to the steel strand to be tensioned.

[0052] In step S2, the steel strand to be tensioned is anchored between the first anchor 21 and the second anchor 22, the hydraulic tensioning assembly 2 is tightened to release the internal stress of the steel strand to be tensioned, and the steel strand to be tensioned is cut after the internal stress is released.

[0053] Specifically, step S2 includes:

[0054] In step S201 , the steel strand to be tensioned is anchored between the first anchor 21 and the second anchor 22 of the hydraulic tensioning assembly 2 .

[0055] In step S202, the hydraulic tensioning assembly 2 is tightened to release the internal stress of the steel strand between the first anchor 21 and the second anchor 22.

[0056] In step S203, the steel strands are cut after the internal stress is released.

[0057] After the steel strands to be tensioned are cut to release the internal stress, the following steps are also included:

[0058] In step S204, the hydraulic expansion and contraction assembly 23 is restored to the extended state to release the internal stress of the segment of the steel strand bundle connecting the tower end and the connecting beam end where the steel strand to be tensioned is located. At this point, the tensioning operation of the bundle of steel strands is completed.

[0059] Repeat the above steps S1-S2 to complete the tensioning construction of the remaining steel strands to be tensioned.

[0060] In combination with the second aspect, in an embodiment of the present application, before lifting the steel strands to be tensioned, it also includes: stripping off the outer sheath of the inclined cable near the anchor end of the beam end to expose the steel strand bundle where the steel strands to be tensioned are located.

[0061] Specifically, the PE sheath on the outside of the inclined cable to be constructed is cut off to expose the steel strand wire bundle inside.

[0062] For the related components and implementation of the components not mentioned in this embodiment, please refer to the above embodiments and will not be described in detail here.

[0063] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0064] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0065] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A steel strand cable removal device, characterized in that: include: Platform (1); a hydraulic tensioning assembly (2) for tensioning the steel strand (8), wherein one end of the hydraulic tensioning assembly (2) is provided with a rotating member rotatably connected to the platform (1), and a first jack (3) for realizing the rotation of the hydraulic tensioning assembly (2) around the rotating member is provided between the hydraulic tensioning assembly (2) and the platform (1); The hydraulic tensioning assembly (2) comprises a first anchor (21) and a second anchor (22) for anchoring the steel strand (8), and a hydraulic expansion assembly (23) disposed between the first anchor (21) and the second anchor (22) to release internal stress of the steel strand (8) between the first anchor (21) and the second anchor (22).

2. The steel strand cable removal device according to claim 1, characterized in that: Also includes: A second jack (4) and a third jack (5) are located on the platform (1), and the hydraulic tensioning assembly (2) is arranged between the second jack (4) and the third jack (5); A first hook (6) and a second hook (7) for separating a steel strand (8) to be released from a bundle of steel strands (8), wherein the first hook (6) is arranged at an end of the second jack (4) away from the platform (1), and the second hook (7) is arranged at an end of the third jack (5) away from the platform (1).

3. The steel strand cable removal device according to claim 2, characterized in that: One end of the first hook (6) connected to the steel strand (8), the hydraulic tensioning assembly (2), and one end of the second hook (7) connected to the steel strand (8) are arranged in sequence along the inclination direction of the steel strand (8).

4. The steel strand cable removal device according to claim 1, characterized in that: The hydraulic telescopic assembly (23) comprises: A piston rod (231), one end of the piston rod (231) being fixedly connected to the first anchor (21); a hydraulic cylinder (232) sleeved outside the piston rod (231), wherein one end of the hydraulic cylinder (232) away from the piston rod (231) is fixedly connected to the second anchor (22); A hydraulic side plate (233) fixedly connected to the hydraulic cylinder (232); wherein the rotating member comprises a rotating shaft and a rotating plate (24); the rotating plate (24) is arranged on a side of the hydraulic side plate (233) facing the platform (1); and the rotating plate (24) is provided with a through hole for the rotating shaft to pass through.

5. The steel strand cable removal device according to claim 4, characterized in that: Also includes: A first support (9) fixedly connected to the platform (1), wherein an end of the first support (9) away from the platform (1) is provided with a rotation hole for the rotation shaft to pass through; A second support (10) is fixedly connected to the platform (1), and one end of the second support (10) away from the platform (1) is fixedly connected to the first jack (3).

6. The steel strand stay cable removal device according to claim 1, characterized in that: Also includes: A guide rod (25), one end of which is fixedly connected to the first anchor (21), and the other end of which is inserted into a guide hole formed in the second anchor (22).

7. The steel strand cable removal device according to claim 1, characterized in that: Also includes: A platform telescopic assembly (11), one end of the platform telescopic assembly (11) being slidably connected to a side of the platform (1) away from the hydraulic expansion assembly (2); A moving component (12), wherein the inner side wall of the moving component (12) is provided with a slideway (121) for the platform telescopic component (11) to slide, and the outer side wall of the moving component (12) is provided with a pulley (122) for the platform (1) to move.

8. The steel strand cable removal device according to claim 1, characterized in that: The first anchor (21) is provided with a first anchor hole, and the first anchor (21) also includes a first clamp (13) clamped on both sides of the first anchor hole, and a first locking hole for the steel strand (8) to pass through is formed between the first clamp (13) and the first anchor hole; the second anchor (22) is provided with a second anchor hole, and the second anchor (22) also includes a second clamp (14) clamped on both sides of the second anchor hole, and a second locking hole for the steel strand (8) to pass through is formed between the second clamp (14) and the second anchor hole; wherein the first locking hole is aligned with the second locking hole.

9. A method for removing a steel strand cable, based on the steel strand cable removal device according to any one of claims 1 to 8, characterized in that: include: Lift the steel strand to be released and separate it from the steel strand bundle, and adjust the first jack (3) so that the hydraulic release assembly (2) is parallel to the steel strand to be released; Anchor the steel strand to be tensioned between the first anchor (21) and the second anchor (22), tighten the hydraulic tensioning assembly (2) to release the internal stress of the steel strand to be tensioned, and cut the steel strand to be tensioned after the internal stress is released.

10. The method for removing the steel strand cable according to claim 9, characterized in that: After the steel strands to be tensioned are cut to release the internal stress, the following steps are also included: The hydraulic telescopic assembly (23) is restored to the extended state to release the internal stress of the segment where the steel strand harness connecting the tower end and the connecting beam end is located.

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