Device for dismantling single parallel steel strand stay cable

Abstract

The utility model relates to a device for dismantling a single parallel steel strand stay cable, and relates to the technical field of auxiliary equipment for bridge maintenance and reinforcement, the device comprises an anchoring part used for being connected to a steel strand spaced from an anchoring end by a set distance; the steering labor-saving mechanism comprises a labor-saving structure and a steering structure, the labor-saving structure and the steering structure are both used for being connected with the cable guide pipe, and the steering structure is located at the end, away from the anchoring part, of the labor-saving structure; the winch is used for being arranged on the beam body, a steel wire rope is arranged on the winch, the steel wire rope penetrates through the steering structure and the labor-saving structure and is connected with the anchoring part, and the winch is used for transferring the cable force of the part, located between the anchoring part and the anchoring end, of the steel strand to the steel wire rope. Due to the fact that the cable force of the part, located between the anchoring part and the anchoring end, of the steel strand can be transferred to the steel wire rope, the part, located between the anchoring part and the anchoring end, of the steel strand can be cut off, the jack does not need to be installed at the beam end anchorage device of the stay cable, and the jack can be used when the space of the beam end anchorage device is insufficient.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge maintenance and reinforcement auxiliary equipment, in particular to a device for removing a single parallel steel stranded cable. Background Art

[0002] With the vigorous development of infrastructure construction, the construction of large-span cable-stayed bridges is increasing. In recent years, with the rapid development of the economy, the increase in traffic volume and the increase in vehicle axle loads, a considerable number of steel arch bridges have suffered from varying degrees of damage. In order to achieve sustainable development of bridge construction, it is necessary to actively introduce and develop advanced technologies, materials and equipment for the reinforcement and reconstruction of old bridges, and reasonably select reinforcement and reconstruction plans so that old and dangerous bridges can still play a role as long as possible, so that limited funds can play a greater role, and bridge construction can truly enter the sustainable development path of "equal emphasis on construction and maintenance". Cable-stayed bridges are often the preferred bridge type because they are suitable for various spans and have beautiful shapes. After long-term use and increasing traffic pressure, the maintenance and management of cable-stayed cables has become particularly complex and difficult. Since cable-stayed cables are prone to varying degrees of corrosion and strength attenuation, the general design service life of cable-stayed cables is usually set at 20 years. Therefore, many cable-stayed bridges built in the early days are facing an urgent need to replace cable-stayed cables.

[0003] In the prior art, there is a method for removing a steel strand inclined cable with a steering saddle, such as patent number CN114934451A, which uses a method of releasing and removing the steel strands one by one to achieve tensioning of the entire bundle of cables, including the following steps: S1. Using a jack to remove the steel strand clamp on one side of the cable, changing the anchoring of the steel strand from the beam end anchor to a temporary anchoring by an open clamping device on the bridge deck, thereby unloading the cable force; S2. Using the tension difference of the steel strands on both sides of the cable tower generated during the unloading process, the gripping force of the anti-sliding anchor on the steel strand is automatically overcome and destroyed, thereby releasing the constraint of the anti-sliding anchor on the steel strand; S3. Removing the steel strand clamp on the other side of the cable, unloading the tension of the steel strand with a winch, and pulling it out of the cable; S4. Repeating steps S1 to S3 until all the steel strands of the bundle of cables are removed one by one.

[0004] However, in the method for removing the steel strand cable with a steering saddle, a jack needs to be installed at the beam end anchor of the cable, and space for installing the jack needs to be reserved at the beam end anchor. When the installation space is insufficient, it is difficult to use this method to remove the cable, and there is a problem that it is difficult to remove when there is insufficient space at the beam end anchor. Utility Model Content

[0005] The present application provides a device for removing a single parallel steel strand stay cable, which can solve the problem that in the prior art method for removing the steel strand stay cable with a steering saddle, a jack needs to be installed at the beam end anchor of the stay cable, and space needs to be reserved at the beam end anchor for installing the jack. When the installation space is insufficient, it is difficult to use this method to remove the stay cable, and there is a problem that it is difficult to remove the cable when there is insufficient space at the beam end anchor.

[0006] In a first aspect, an embodiment of the present application provides a device for removing a single parallel steel strand stay cable, comprising:

[0007] Anchors for connection to the strands at a set distance from the anchor ends;

[0008] A steering labor-saving mechanism, comprising a labor-saving structure and a steering structure, both of which are used to connect with the cable guide tube, and the steering structure is located at one end of the labor-saving structure away from the anchoring piece;

[0009] A winch is used to be set on the beam body. The winch is provided with a steel wire rope. The steel wire rope passes through the steering structure and the labor-saving structure and is connected to the anchor. The winch is used to transfer the rope force of the steel strand located between the anchor and the anchor end to the steel wire rope.

[0010] In combination with the first aspect, in one embodiment, the anchoring member includes:

[0011] An outer anchoring fixture, wherein a stepped cavity is provided inside the stepped cavity, wherein the stepped cavity comprises a small diameter section and a large diameter section, wherein the diameter of the small diameter section is smaller than the diameter of the large diameter section, wherein the small diameter section is used to connect the steel strand, and the outer anchoring fixture is connected to the steel wire rope;

[0012] An inner anchoring clamp is arranged in the large diameter section and is used for clamping the steel strand.

[0013] In combination with the first aspect, in one embodiment, the inner anchoring fixture includes:

[0014] A mounting shell, in which a mounting hole is provided, and an opening communicating with the mounting hole is provided on the mounting shell for allowing the steel strand to pass through, and the mounting shell is arranged in the large-diameter section;

[0015] An anchor clamp is arranged in the installation hole, comprising an upper clamp and a lower clamp, and is used for clamping the steel strand.

[0016] In combination with the first aspect, in one embodiment, two connecting plates are provided on both sides of the outer anchor clamp, and steel wire connecting holes are provided on the connecting plates. The steel wire rope includes a single wire segment and a double wire segment. One end of the single wire segment is connected to the winch, and the other end passes through the steering effort-saving mechanism. The double wire segment is connected to the two steel wire connecting holes.

[0017] In combination with the first aspect, in one embodiment, the outer anchor clamp includes an upper clamp and a lower clamp, and the upper clamp and the lower clamp are combined to form the connecting plate. The connecting plate is also provided with a plurality of bolt holes arranged at intervals, and the bolt holes are used to allow bolts to pass through to fix the relative positions of the upper clamp and the lower clamp.

[0018] In combination with the first aspect, in one embodiment, a dynamometer is provided on a portion of the single-line segment located between the labor-saving structure and the anchor, and the dynamometer is used to detect the tension of the portion of the single-line segment located between the labor-saving structure and the anchor.

[0019] In combination with the first aspect, in one implementation, the single wire segment and the double wire segment are connected by a shackle.

[0020] In combination with the first aspect, in one embodiment, it further includes a lifting lug, wherein the lifting lug is used to be arranged on the cable guide tube, and the lifting lug is connected to the labor-saving structure through a connecting piece.

[0021] In combination with the first aspect, in one embodiment, the labor-saving structure is a pulley assembly.

[0022] In combination with the first aspect, in one embodiment, the steering structure is a steering single-door pulley.

[0023] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0024] When using the device for removing a single parallel steel strand inclined cable, the anchor is connected to the steel strand at a set distance from the anchor end, and one end of the steel wire rope is installed on the anchor through the steering effort-saving mechanism, and the other end is connected to the winch. The winch is started to transfer the cable force of the steel strand between the anchor and the anchor end to the steel wire rope, and the portion of the steel strand between the anchor and the anchor end is cut off. The winch runs in reverse until the cable force of the remaining part of the steel strand is unloaded, and the remaining part of the steel strand is removed. Since the steering effort-saving mechanism includes an effort-saving structure and a steering structure, the steel wire rope passes through the steering structure and the effort-saving structure and is connected to the anchor, the cable force of the steel strand located between the anchor and the anchor end can be transferred to the steel wire rope, and then the steel strand located between the anchor and the anchor end can be cut off. There is no need to install the jack at the beam end anchor of the inclined cable, and it can be used when there is insufficient space at the beam end anchor. This solves the problem in the prior art that the jack needs to be installed at the beam end anchor of the inclined cable with a steering saddle, and space needs to be reserved at the beam end anchor for installing the jack. When the installation space is insufficient, it is difficult to use this method to remove the inclined cable, and there is a problem that it is difficult to remove when there is insufficient space at the beam end anchor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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.

[0026] Figure 1 The utility model is a schematic structural diagram of a device embodiment for removing a single parallel steel stranded cable.

[0027] Figure 2 The utility model is a schematic diagram of the structure of a stay cable in a device embodiment for removing a single stay cable of a parallel steel strand.

[0028] Figure 3 The utility model is a schematic diagram of the structure of an anchor member in a device embodiment for removing a single parallel steel stranded cable.

[0029] Figure 4 The utility model is a schematic structural diagram of an outer side anchoring clamp in a device embodiment for removing a single parallel steel stranded cable.

[0030] Figure 5 The utility model is a schematic structural diagram of an inner anchoring clamp in a device embodiment for removing a single parallel steel stranded cable.

[0031] Figure 6The utility model is a schematic diagram of the structure of a steel wire rope in an embodiment of a device for removing a single parallel steel stranded cable.

[0032] In the figure: 1. anchor; 11. outer anchor clamp; 111. small diameter section; 112. large diameter section; 12. inner anchor clamp; 121. mounting shell; 1211. opening; 1212. mounting hole; 122. anchor clip; 13. connecting plate; 131. steel strand connecting hole; 132. bolt hole; 14. bolt; 2. inclined cable; 21. steel strand; 22. cable guide tube; 23. outer sleeve; 3. anchor end; 4. steering effort-saving mechanism; 41. effort-saving structure; 42. steering structure; 5. beam; 6. winch; 7. wire rope; 71. single line segment; 72. double line segment; 73. shackle; 8. dynamometer; 9. lifting ear. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution 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.

[0034] An embodiment of the present application provides a device for removing a single parallel steel strand stay cable, which can solve the problem in the prior art that a jack needs to be installed at the beam end anchor of the stay cable in the method for removing the steel strand stay cable with a steering saddle, and space needs to be reserved at the beam end anchor for installing the jack. When the installation space is insufficient, it is difficult to use this method to remove the stay cable, and there is a problem that it is difficult to remove the cable when there is insufficient space at the beam end anchor.

[0035] like Figure 2 As shown, in conventional cases, the stay cable 2 includes a cable guide tube 22 , a steel strand 21 , and an outer sleeve 23 disposed outside the steel strand 21 .

[0036] like Figure 1 , Figure 2 and Figure 6 As shown, on the one hand, the present application provides a device for removing a single parallel steel stranded cable, which comprises:

[0037] An anchor 1, which is used to connect to a steel strand 21 at a set distance from an anchor end 3;

[0038] The steering labor-saving mechanism 4 includes a labor-saving structure 41 and a steering structure 42. Both the labor-saving structure 41 and the steering structure 42 are used to connect with the cable guide tube 22. The steering structure 42 is located at one end of the labor-saving structure 41 away from the anchor 1.

[0039] The winch 6 is used to be set on the beam body 5. The winch 6 is provided with a wire rope 7. The wire rope 7 passes through the steering structure 42 and the labor-saving structure 41 and is connected to the anchor 1. The winch 6 is used to transfer the rope force of the steel strand 21 between the anchor 1 and the anchor end 3 to the wire rope 7.

[0040] When using the device for removing a single parallel steel strand inclined cable, the anchor 1 is connected to the steel strand 21 at a set distance from the anchor end 3, and one end of the wire rope 7 is installed on the anchor 1 through the steering effort-saving mechanism 4, and the other end is connected to the winch 6. The winch 6 is started to transfer the cable force of the steel strand 21 between the anchor 1 and the anchor end 3 to the wire rope 7, and the portion of the steel strand 21 between the anchor 1 and the anchor end 3 is cut off. The winch 6 runs in reverse until the remaining cable force of the steel strand 21 is unloaded, and the remaining portion of the steel strand 21 is removed. Since the steering effort-saving mechanism 4 includes an effort-saving structure 41 and a steering structure 42, the steel wire rope 7 passes through the steering structure 42 and the effort-saving structure 41 and is connected to the anchor 1, the cable force of the steel strand 21 between the anchor 1 and the anchor end 3 can be transferred to the steel wire rope 7, and then the steel strand 21 between the anchor 1 and the anchor end 3 can be cut off. There is no need to install the jack at the beam end anchor of the inclined cable, and it can be used when there is insufficient space at the beam end anchor. This solves the problem in the prior art that the jack needs to be installed at the beam end anchor of the inclined cable with a steering saddle, and space needs to be reserved at the beam end anchor for installing the jack. When the installation space is insufficient, it is difficult to use this method to remove the inclined cable, and there is a problem that it is difficult to remove when there is insufficient space at the beam end anchor.

[0041] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some optional embodiments, the anchor 1 includes:

[0042] The outer anchoring fixture 11 has a stepped cavity inside, the stepped cavity includes a small diameter section 111 and a large diameter section 112, the diameter of the small diameter section 111 is smaller than the diameter of the large diameter section 112, the small diameter section 111 is used to connect the steel strand 21, and the outer anchoring fixture 11 is connected to the steel wire rope 7;

[0043] The inner anchoring clamp 12 is arranged in the large diameter section 112 and is used for clamping the steel strand 21 .

[0044] In this embodiment, the structure of the anchor 1 is specifically described. The anchor 1 includes an outer anchor clamp 11 and an inner anchor clamp 12, wherein a stepped cavity is provided inside the outer anchor clamp 11, and the stepped cavity includes a small diameter section 111 and a large diameter section 112. The diameter of the small diameter section 111 is smaller than the diameter of the large diameter section 112. The small diameter section 111 is used to connect the steel strand 21. The outer anchor clamp 11 is connected to the steel wire rope 7, and the inner anchor clamp 12 is arranged in the large diameter section 112 for clamping the steel strand 21. It has a simple structure, high stability, and good anchoring effect.

[0045] like Figure 3 , Figure 4 and Figure 5 As shown, in some optional embodiments, the inner anchoring fixture 12 includes:

[0046] The mounting shell 121 has a mounting hole 1212 therein, and the mounting shell 121 has an opening 1211 in communication with the mounting hole 1212 for allowing the steel strand 21 to pass through. The mounting shell 121 is disposed in the large diameter section 112;

[0047] The anchor clamp 122 is disposed in the mounting hole 1212 , and includes an upper clamp and a lower clamp, and is used to clamp the steel strand 21 .

[0048] In this embodiment, the structure of the inner anchor clamp 12 is specifically described. The inner anchor clamp 12 includes a mounting shell 121 and an anchor clip 122, wherein a mounting hole 1212 is provided in the mounting shell 121, and an opening 1211 connected to the mounting hole 1212 is provided on the mounting shell 121 for allowing the steel strand 21 to pass through. The mounting shell 121 is arranged in the large diameter section 112, and the anchor clip 122 is arranged in the mounting hole 1212, including an upper half clip and a lower half clip, for clamping the steel strand 21, further improving the anchoring effect, preventing the inner anchor clamp 12 from separating from the steel strand 21 during the operation of the winch 6, and improving the safety of the device for removing a single parallel steel strand inclined cable.

[0049] like Figure 3 , Figure 4 and Figure 6 As shown, in some optional embodiments, two connecting plates 13 are provided on both sides of the outer anchor clamp 11, and steel wire connecting holes 131 are provided on the connecting plates 13. The steel wire rope 7 includes a single wire segment 71 and a double wire segment 72. One end of the single wire segment 71 is connected to the winch 6, and the other end passes through the steering effort-saving mechanism 4. The double wire segment 72 is connected to the two steel wire connecting holes 131.

[0050] In this embodiment, two connecting plates 13 are provided on both sides of the outer anchoring clamp 11, and steel strand connecting holes 131 are provided on the connecting plates 13. The steel wire rope 7 includes a single wire segment 71 and a double wire segment 72. One end of the single wire segment 71 is connected to the winch 6, and the other end passes through the steering effort-saving mechanism 4. The double wire segment 72 is connected to the two steel strand connecting holes 131, so that the force on the outer anchoring clamp 11 is more balanced, preventing the anchor 1 from being unstable and separated from the steel strand 21 during the operation of the winch 6, thereby improving the safety of the device for removing a single parallel steel strand inclined cable.

[0051] like Figure 4 As shown, in some optional embodiments, the outer anchoring clamp 11 includes an upper clamp and a lower clamp, and the upper clamp and the lower clamp are combined to form a connecting plate 13. The connecting plate 13 is also provided with a plurality of bolt holes 132 arranged at intervals, and the bolt holes 132 are used for the bolts 14 to pass through to fix the relative positions of the upper clamp and the lower clamp.

[0052] In this embodiment, the specific structure of the outer anchor clamp 11 is described. The outer anchor clamp 11 includes an upper clamp and a lower clamp. The upper clamp and the lower clamp are combined to form a connecting plate 13. The connecting plate 13 is also provided with a plurality of bolt holes 132 arranged at intervals. The bolt holes 132 are used for passing bolts 14 to fix the relative positions of the upper clamp and the lower clamp, thereby facilitating the installation of the outer anchor clamp 11 on the steel strand 21.

[0053] like Figure 1 and Figure 6 As shown, in some optional embodiments, a dynamometer 8 is provided on the portion of the single-line segment 71 located between the force-saving structure 41 and the anchor 1 , and the dynamometer 8 is used to detect the tension of the portion of the single-line segment 71 located between the force-saving structure 41 and the anchor 1 .

[0054] In this embodiment, a dynamometer 8 is provided on the portion of the single-line segment 71 located between the force-saving structure 41 and the anchor 1. The dynamometer 8 is used to detect the tension of the portion of the single-line segment 71 located between the force-saving structure 41 and the anchor 1, so as to facilitate the observation of the magnitude of the tension, so as to determine the stress condition of the wire rope 7, and further determine the working progress.

[0055] In this example, generally, when the reading of the dynamometer 8 is 1.1 times the calculated cable force of a single steel strand 21, the cable force of the steel strand 21 between the anchor 1 and the anchor end 3 is transferred to the steel wire rope 7. When the reading of the dynamometer 8 is zero, the steel strand 21 can be quickly extended to the curved state for removal.

[0056] like Figure 6 As shown, in some optional embodiments, the single line segment 71 and the double line segment 72 are connected by a shackle 73 .

[0057] In this embodiment, the single line segment 71 and the double line segment 72 are connected by a shackle 73 , which has a good connection effect and prevents the single line segment 71 and the double line segment 72 from being disconnected.

[0058] like Figure 1 As shown, in some optional embodiments, a lifting lug 9 is further included. The lifting lug 9 is used to be arranged on the cable guide tube 22. The lifting lug 9 is connected to the labor-saving structure 41 through a connecting piece.

[0059] In this embodiment, the device for removing a single parallel steel strand stay cable also includes a lifting lug 9, which is used to be set on the cable guide tube 22. The lifting lug 9 is connected to the labor-saving structure 41 through a connecting piece, which facilitates the labor-saving structure 41 to be set on the cable guide tube 22.

[0060] In this example, the connecting member may be a workpiece such as a wire rope.

[0061] like Figure 1 As shown, in some optional embodiments, the labor-saving structure 41 is a pulley assembly.

[0062] In this embodiment, the labor-saving structure 41 is configured as a pulley assembly, which is suitable for use in outdoor engineering environments, has high reliability, and good use effects.

[0063] In this example, the labor-saving structure 41 adopts a pulley group structure, which can reduce the force on the winch 6. A smaller winch 6 can be selected to reduce investment (the pulley has five lines, and the force on the end of the winch 6 is 1 / 5 of the force on the steel strand 21).

[0064] like Figure 1 As shown, in some optional embodiments, the steering structure 42 is a steering single-door pulley.

[0065] In the present embodiment, the steering structure 42 is configured as a steering single-door pulley, which is suitable for use in outdoor engineering environments and has high reliability and good use effects.

[0066] In this example, the main function of the steering single-door pulley is to direct the pulling direction of the steel wire rope 7 as much as possible along the axial direction of the steel strand 21 to be cut, so as to prevent the steel strand 21 from rebounding when being cut.

[0067] like Figure 1 , Figure 2 and Figure 6 As shown, on the other hand, the present application also provides a method for removing a single parallel steel strand cable, which is implemented using the above-mentioned device for removing a single parallel steel strand cable, and includes the following steps:

[0068] Connect the anchor 1 to the steel strand 21 at a set distance from the anchor end 3, and install one end of the steel wire rope 7 on the anchor 1 through the steering effort saving mechanism 4, and connect the other end to the winch 6;

[0069] Start the winch 6 to transfer the cable force of the steel strand 21 between the anchor 1 and the anchor end 3 to the steel wire rope 7, and cut off the steel strand 21 between the anchor 1 and the anchor end 3;

[0070] The winch 6 runs in the reverse direction until the remaining cable force of the steel strand 21 is unloaded, and the remaining steel strand 21 is removed.

[0071] When using the device for removing a single parallel steel strand inclined cable, the anchor 1 is connected to the steel strand 21 at a set distance from the anchor end 3, and one end of the wire rope 7 is installed on the anchor 1 through the steering effort-saving mechanism 4, and the other end is connected to the winch 6. The winch 6 is started to transfer the cable force of the steel strand 21 between the anchor 1 and the anchor end 3 to the wire rope 7, and the portion of the steel strand 21 between the anchor 1 and the anchor end 3 is cut off. The winch 6 runs in reverse until the remaining cable force of the steel strand 21 is unloaded, and the remaining portion of the steel strand 21 is removed. Since the steering effort-saving mechanism 4 includes an effort-saving structure 41 and a steering structure 42, the steel wire rope 7 passes through the steering structure 42 and the effort-saving structure 41 and is connected to the anchor 1, the cable force of the steel strand 21 between the anchor 1 and the anchor end 3 can be transferred to the steel wire rope 7, and then the steel strand 21 between the anchor 1 and the anchor end 3 can be cut off. There is no need to install the jack at the beam end anchor of the inclined cable, and it can be used when there is insufficient space at the beam end anchor. This solves the problem in the prior art that the jack needs to be installed at the beam end anchor of the inclined cable with a steering saddle, and space needs to be reserved at the beam end anchor for installing the jack. When the installation space is insufficient, it is difficult to use this method to remove the inclined cable, and there is a problem that it is difficult to remove when there is insufficient space at the beam end anchor.

[0072] In some optional embodiments, before the anchor 1 is connected to the steel strand 21 at a set distance from the anchor end 3, the process further includes: breaking the outer sleeve 23 to expose the steel strand 21.

[0073] In this embodiment, before the anchor 1 is connected to the steel strand 21 at a set distance from the anchor end 3, the outer sleeve 23 needs to be removed to expose the steel strand 21 to facilitate the installation of the anchor 1.

[0074] To summarize, when using the device for removing a single parallel steel strand inclined cable, the anchor 1 is connected to the steel strand 21 at a set distance from the anchor end 3, and one end of the steel wire rope 7 is installed on the anchor 1 through the steering effort-saving mechanism 4, and the other end is connected to the winch 6. The winch 6 is started to transfer the cable force of the steel strand 21 between the anchor 1 and the anchor end 3 to the steel wire rope 7, and the portion of the steel strand 21 between the anchor 1 and the anchor end 3 is cut off. The winch 6 runs in reverse until the remaining cable force of the steel strand 21 is unloaded, and the remaining portion of the steel strand 21 is removed. Since the steering effort-saving mechanism 4 includes an effort-saving structure 41 and a steering structure 42, the steel wire rope 7 passes through the steering structure 42 and the effort-saving structure 41 and is connected to the anchor 1, the cable force of the steel strand 21 between the anchor 1 and the anchor end 3 can be transferred to the steel wire rope 7, and then the steel strand 21 between the anchor 1 and the anchor end 3 can be cut off. There is no need to install the jack at the beam end anchor of the inclined cable, and it can be used when there is insufficient space at the beam end anchor. This solves the problem in the prior art that the jack needs to be installed at the beam end anchor of the inclined cable with a steering saddle, and space needs to be reserved at the beam end anchor for installing the jack. When the installation space is insufficient, it is difficult to use this method to remove the inclined cable, and there is a problem that it is difficult to remove when there is insufficient space at the beam end anchor.

[0075] The device for removing a single parallel steel stranded cable can also be used when the steel strand 21 does not have a sufficient exposed length to allow the single or entire cable 2 to be tensioned.

[0076] 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.

[0077] 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.

[0078] 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 device for removing a single parallel steel strand cable, characterized in that: include: An anchor (1) for connecting to a steel strand (21) at a set distance from an anchor end (3); A steering labor-saving mechanism (4), comprising a labor-saving structure (41) and a steering structure (42), wherein both the labor-saving structure (41) and the steering structure (42) are used to be connected to the cable guide tube (22), and the steering structure (42) is located at an end of the labor-saving structure (41) away from the anchor (1); A winch (6) is arranged on a beam body (5), the winch (6) is provided with a steel wire rope (7), the steel wire rope (7) passes through the steering structure (42) and the labor-saving structure (41), and is connected to the anchor (1), the winch (6) is used to transfer the cable force of the steel strand (21) between the anchor (1) and the anchor end (3) to the steel wire rope (7).

2. A device for removing a single parallel steel strand stay cable as claimed in claim 1, characterized in that: The anchor (1) comprises: An outer anchoring clamp (11) is provided with a stepped cavity inside, the stepped cavity comprising a small diameter section (111) and a large diameter section (112), the diameter of the small diameter section (111) is smaller than the diameter of the large diameter section (112), the small diameter section (111) is used to connect the steel strand (21), and the outer anchoring clamp (11) is connected to the steel wire rope (7); An internal anchoring clamp (12) is arranged in the large diameter section (112) and is used for clamping the steel strand (21).

3. A device for removing a single parallel steel strand stay cable as claimed in claim 2, characterized in that: The inner anchoring fixture (12) comprises: A mounting shell (121) having a mounting hole (1212) therein, the mounting shell (121) having an opening (1211) in communication with the mounting hole (1212) for allowing the steel strand (21) to pass therethrough, the mounting shell (121) being arranged in the large-diameter section (112); An anchor clamp (122) is arranged in the mounting hole (1212), comprising an upper clamp and a lower clamp, and is used to clamp the steel strand (21).

4. The device for removing a single parallel steel strand stay cable according to claim 2, characterized in that: Two connecting plates (13) are provided on both sides of the outer anchoring clamp (11), and steel strand connection holes (131) are provided on the connecting plates (13). The steel wire rope (7) comprises a single wire segment (71) and a double wire segment (72). One end of the single wire segment (71) is connected to the winch (6), and the other end passes through the steering effort-saving mechanism (4). The double wire segment (72) is connected to the two steel strand connection holes (131).

5. A device for removing a single parallel steel strand stay cable as claimed in claim 4, characterized in that: The outer anchoring clamp (11) comprises an upper clamp and a lower clamp, the upper clamp and the lower clamp are combined to form the connecting plate (13), and the connecting plate (13) is also provided with a plurality of bolt holes (132) arranged at intervals, the bolt holes (132) are used to allow bolts (14) to pass through, so as to fix the relative positions of the upper clamp and the lower clamp.

6. The device for removing a single parallel steel strand stay cable according to claim 4, characterized in that: A dynamometer (8) is provided on the portion of the single line segment (71) located between the labor-saving structure (41) and the anchor (1), and the dynamometer (8) is used to detect the tension of the portion of the single line segment (71) located between the labor-saving structure (41) and the anchor (1).

7. The device for removing a single parallel steel strand stay cable according to claim 4, characterized in that: The single line segment (71) and the double line segment (72) are connected via a shackle (73).

8. The device for removing a single parallel steel strand stay cable according to claim 1, characterized in that: It also comprises a lifting lug (9), wherein the lifting lug (9) is used to be arranged on the cable guide tube (22), and the lifting lug (9) is connected to the labor-saving structure (41) via a connecting piece.

9. The device for removing a single parallel steel strand stay cable according to claim 1, characterized in that: The labor-saving structure (41) is a pulley block.

10. The device for removing a single parallel steel strand stay cable according to claim 1, characterized in that: The steering structure (42) is a steering single-door pulley.

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