Clamp for steel strand stay cable

Abstract

The utility model relates to a clamp for a steel strand stay cable, and belongs to the technical field of bridge maintenance, the clamp for the steel strand stay cable comprises a first clamp block, the first clamp block is arranged on the outer side of a steel strand in a sleeving mode, and a first clamping assembly used for clamping the steel strand and a limiting mechanism are arranged in the first clamp block; the limiting mechanism is used for limiting the first clamping assembly to be separated from the first clamp block, and the limiting mechanism is arranged on one side of the first clamp block; through the limiting mechanism, the situation that the self-rotating steel strand enables the conical clamping piece assembly to rotate to generate centrifugal force to fly out of the first clamp block can be avoided, the conical clamping piece assembly in the first clamp block is limited through the limiting mechanism to be prevented from being disengaged, and safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of bridge maintenance, and in particular to a clamp for a steel strand stay cable. Background Art

[0002] Bridges are widely built as an important transportation facility. Cable-stayed bridges, as a type of bridge that can achieve larger spans, are widely used in various transportation construction projects. The steel strand cable system is widely used in cable-stayed bridge cables, external prestressed tendons, hangers and tie rods due to its advantages such as single hanging cable and tensioning, multiple protection advantages, and miniaturized construction equipment.

[0003] During the operation of a cable-stayed bridge, the cables bear long-term loads and are susceptible to adverse environmental factors, which can easily lead to defects such as rupture of the HDPE casing, severe corrosion of the steel strands, and even cable breakage, which seriously threaten the safety of the bridge. To solve this problem, the steel strands need to be cut and replaced, and power equipment is required to fix and pull the steel strands during the cutting and replacement process.

[0004] The existing power equipment and the steel strand are connected by a clamp mechanism, but the connection effect of the existing clamp mechanism is poor and it is easy to break and detach, resulting in failure, which reduces the safety of the construction process. Summary of the Invention

[0005] An embodiment of the present application provides a clamp for a steel strand cable to solve the problem that the connection effect of the existing clamp mechanism in the related art is poor. After cutting the steel strand, the conical clamp inside it will rotate with the steel strand, thereby generating centrifugal force to disengage and cause failure, thereby reducing the safety of the construction process.

[0006] The embodiment of the present application provides a clamp for a steel strand stay cable, comprising:

[0007] a first clamp block, wherein the first clamp block is sleeved on the outside of the steel strand, and a first clamping assembly for clamping the steel strand is provided in the first clamp block;

[0008] The limiting mechanism is used to limit the first clamping assembly from being separated from the first clamp block, and the limiting mechanism is arranged on one side of the first clamp block.

[0009] In some embodiments, the limiting mechanism includes a second clamp block provided on one side of the first clamp block for limiting the separation of the first clamping assembly;

[0010] A second clamping assembly for secondary clamping of the steel strand is provided in the second clamp block.

[0011] In some embodiments, the first clamp block and the second clamp block are each provided with a wedge-shaped hole inside and are open at both ends;

[0012] The outer walls of the first fixture block and the second fixture block are both provided with placement openings communicating with the wedge-shaped hole.

[0013] In some embodiments, the placement opening of the first fixture block and the placement opening of the second fixture block open in opposite directions.

[0014] In some embodiments, a threaded section is provided on one side of the first clamp block, and an internal thread that cooperates with the threaded section is provided inside the wedge-shaped hole of the second clamp block.

[0015] In some embodiments, the first clamping assembly is disposed within a wedge-shaped hole in a first clamp block, and the second clamping assembly is disposed within a wedge-shaped hole in a second clamp block;

[0016] The first clamping assembly and the second clamping assembly are both tapered clip assemblies.

[0017] In some embodiments, the limiting mechanism includes a baffle disposed on one side of the first clamp block for limiting the separation of the first clamping assembly.

[0018] In some embodiments, a wedge-shaped hole is formed inside the first fixture block and is open at both ends, and the baffle is located on a side of the first fixture block close to an end with a largest diameter of the wedge-shaped hole;

[0019] The first clamping component is arranged in the wedge-shaped hole, and the first clamping component is a tapered clip component.

[0020] In some embodiments, an opening is formed on the baffle, and a diameter of the opening is smaller than a maximum diameter of the tapered clip assembly.

[0021] In some embodiments, a lifting ring connected to the outside is provided on the outer side of the first fixture block.

[0022] The beneficial effects of the technical solution provided by this application include:

[0023] After the steel strand connected to the clamp is cut, the steel strand is spirally wound together and will rotate after cutting, causing the conical clamp assembly to rotate. The limiting mechanism is used to prevent the self-rotating steel strand from causing the conical clamp assembly to rotate and generate centrifugal force to fly out of the first clamp block. The conical clamp assembly in the first clamp block is limited by the limiting mechanism to prevent it from detaching, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. 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 any creative work.

[0025] Figure 1 A first structural schematic diagram of the first clamp mechanism provided in an embodiment of the present application;

[0026] Figure 2 A first structural schematic diagram of the first fixture block provided in an embodiment of the present application;

[0027] Figure 3 A schematic structural diagram of the second fixture block provided in an embodiment of the present application;

[0028] Figure 4 A schematic structural diagram of a tapered clip assembly provided in an embodiment of the present application;

[0029] Figure 5 A second structural diagram of the first clamp mechanism provided in an embodiment of the present application;

[0030] Figure 6 This is a second structural schematic diagram of the first fixture block provided in an embodiment of the present application.

[0031] 271. Baffle; 2711. Opening; 272. Lifting ring; 273. First fixture block; 2731. Threaded section; 274. Conical clip assembly; 275. Second fixture block; 2751. Internal thread; 277. Wedge-shaped hole; 278. Placement port. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] An embodiment of the present application provides a clamp for a steel strand cable, which can solve the problem that the connection effect of the existing clamp mechanism is poor. After cutting the steel strand, the conical clamp inside it will rotate with the steel strand, thereby generating centrifugal force and detaching, causing failure, thereby reducing the safety of the construction process.

[0034] See also Figure 1-6 As shown, an embodiment of the present application provides a clamp for a steel strand stay cable, comprising:

[0035] A first clamp block 273, which is sleeved on the outside of the steel strand, and a first clamping assembly for clamping the steel strand is provided in the first clamp block 273;

[0036] The limiting mechanism is used to limit the first clamping assembly from being separated from the first clamp block 273 . The limiting mechanism is provided on one side of the first clamp block 273 .

[0037] In this embodiment, a lifting ring 272 connected to the outside is provided on the outer side of the first clamp block 273 .

[0038] The steel strand is placed into the wedge-shaped hole 277 of the first clamp block 273 through the placement opening 278, and the first clamp block 273 is sleeved on the outside of the steel strand. Then, the tapered clamp assembly 274 is inserted into the wedge-shaped hole 277 from the side opening of the first clamp block 273 close to the threaded section 2731, and sleeved on the outside of the steel strand. The tapered clamp assembly 274 is used to clamp the steel strand in the wedge-shaped hole 277. Then, the placement opening 278 of the second clamp block 275 is used to sleeve the second clamp block 275 on the outside of the steel strand, and the steel strand is located in the wedge-shaped hole 277 of the second clamp block 275. The second clamp block 275 utilizes its internal internal thread 2751 to cooperate with the threaded section 2731 of the first clamp block 273, so that the second clamp block 275 is screwed on the threaded section 2731 of the first clamp block 273, so that the first clamp block 273 and the second clamp block 275 are connected together, and the placement opening 278 of the second clamp block 275 is in the opposite direction to the placement opening 278 of the first clamp block 273 after the second clamp block 275 is installed, so that the steel wire rope is staggered and clamped with the first clamp block 273 and the second clamp block 275, further improving the clamping force of the first clamp mechanism and the second clamp mechanism.

[0039] After the steel strand connected by the clamp is cut, the steel strand will rotate after cutting because the steel strand is spirally wound together, causing the conical clamp assembly 274 to rotate. The second clamp block 275 plays a secondary positioning, limiting and clamping role on the steel strand, and also prevents the self-rotating steel strand from causing the conical clamp assembly 274 to rotate and generate centrifugal force to fly out of the first clamp block 273. The second clamp block 275 limits the conical clamp assembly 274 in the first clamp block 273 to prevent it from detaching, thereby improving safety.

[0040] The conical clip assembly 274 is composed of two arc-shaped clips, and the shape of the conical clip assembly 274 is adapted to the wedge-shaped hole 277. The directions of the conical clip assemblies 274 inside the first clamp block 273 and the second clamp block 275 are the same, so that the second clamp block 275 can limit the conical clip assembly 274 in the first clamp block 273.

[0041] The diameter of the wedge-shaped hole 277 on the side close to the threaded section 2731 is larger than the diameter on the side away from the threaded section 2731, and the hanging ring 272 is U-shaped. The hanging ring 272 is arranged on the outside of the first clamp block 273 and faces the second clamp block 275. It can also be understood that the second clamp block 275 is inside the U-shaped hanging ring 272.

[0042] The lifting ring 272 is connected to external power equipment.

[0043] In some optional embodiments, see Figure 1-4 As shown, in the clamp for the steel strand stay cable, the limiting mechanism includes a second clamp block 275 arranged on one side of the first clamp block 273 for limiting the separation of the first clamping assembly, and a second clamping assembly for secondary clamping of the steel strand is arranged in the second clamp block 275.

[0044] In this embodiment, wedge-shaped holes 277 are formed inside the first clamp block 273 and the second clamp block 275 and are open at both ends. Placement openings 278 communicating with the wedge-shaped holes 277 are formed on the outer walls of the first clamp block 273 and the second clamp block 275.

[0045] In this embodiment, the placement opening 278 of the first clamp block 273 and the placement opening 278 of the second clamp block 275 open in opposite directions.

[0046] In this embodiment, a threaded section 2731 is provided on one side of the first clamp block 273 , and an internal thread 2751 is provided inside the wedge-shaped hole 277 of the second clamp block 275 to cooperate with the threaded section 2731 .

[0047] In this embodiment, the first clamping assembly is disposed within the wedge-shaped hole 277 of the first clamping block 273 , and the second clamping assembly is disposed within the wedge-shaped hole 277 of the second clamping block 275 ;

[0048] The first clamping assembly and the second clamping assembly are both tapered clip assemblies 274 .

[0049] In some optional embodiments, see Figure 3-6 As shown, in the clamp for the steel strand stay cable, the limiting mechanism includes a baffle 271 provided on one side of the first clamp block 273 for limiting the separation of the first clamping assembly.

[0050] In this embodiment, a wedge-shaped hole 277 is formed inside the first clamp block 273 and is open at both ends. The baffle 271 is located on the side of the first clamp block 273 close to the end with the largest diameter of the wedge-shaped hole 277.

[0051] The first clamping component is disposed in the wedge-shaped hole 277 , and the first clamping component is a tapered clip component 274 .

[0052] In this embodiment, an opening 2711 is defined on the baffle 271 . The diameter of the opening 2711 is smaller than the maximum diameter of the tapered clip assembly 274 .

[0053] The diameter of the wedge-shaped hole 277 on the side close to the baffle 271 is larger than the diameter on the side away from the baffle 271, and the hanging ring 272 is U-shaped. The hanging ring 272 is arranged on the outside of the first clamp block 273 and faces the baffle 271. It can also be understood that the baffle 271 is inside the U-shaped hanging ring 272, and the conical clip assembly 274 is composed of two arc-shaped clips, and the shape of the conical clip assembly 274 is adapted to match the wedge-shaped hole 277.

[0054] The steel strand is placed into the wedge-shaped hole 277 of the first clamp block 273 through the placement opening 278, and the first clamp block 273 is sleeved on the outside of the steel strand. Then, the conical clamp assembly 274 is inserted into the wedge-shaped hole 277 from the opening on the side of the first clamp block 273 close to the baffle 271, and sleeved on the outside of the steel strand. The conical clamp assembly 274 is used to clamp the steel strand in the wedge-shaped hole 277. After the connected steel strand is cut, because the steel strands are spirally wound together, the steel strands will rotate after cutting. Therefore, it is necessary to fix the baffle 271 at the end with the largest diameter of the wedge-shaped hole 277 in the first clamp block 273. The diameter of the opening 2711 of the baffle 271 is larger than the diameter of the steel strand and smaller than the maximum diameter of the conical clamp assembly 274, so that the conical clamp assembly 274 can be prevented from flying out.

[0055] The baffle 271 and the first clamp block 273 are fixed in a detachable manner. A first bolt hole is provided on the outer wall of the first clamp block 273, and a second bolt hole corresponding to the first bolt hole is provided on the baffle 271. The baffle 271 is removed before the conical clip assembly 274 needs to be installed. After the conical clip assembly 274 is installed, the baffle 271 and the first clamp block 273 are connected and fixed by bolts passing through the first bolt hole and the second bolt hole.

[0056] The working principle and process of this application:

[0057] When the second clamp block 275 is used as the limiting mechanism:

[0058] The steel strand is placed into the wedge-shaped hole 277 of the first clamp block 273 through the placement opening 278, and the first clamp block 273 is sleeved on the outside of the steel strand. Then, the tapered clamp assembly 274 is inserted into the wedge-shaped hole 277 from the side opening of the first clamp block 273 close to the threaded section 2731, and sleeved on the outside of the steel strand. The tapered clamp assembly 274 is used to clamp the steel strand in the wedge-shaped hole 277. Then, the placement opening 278 of the second clamp block 275 is used to sleeve the second clamp block 275 on the outside of the steel strand, and the steel strand is located in the wedge-shaped hole 277 of the second clamp block 275. The second clamp block 275 utilizes its internal internal thread 2751 to cooperate with the threaded section 2731 of the first clamp block 273, so that the second clamp block 275 is screwed on the threaded section 2731 of the first clamp block 273, so that the first clamp block 273 and the second clamp block 275 are connected together, and the placement opening 278 of the second clamp block 275 is in the opposite direction to the placement opening 278 of the first clamp block 273 after the second clamp block 275 is installed, so that the steel wire rope is staggered and clamped with the first clamp block 273 and the second clamp block 275, further improving the clamping force of the first clamp mechanism and the second clamp mechanism.

[0059] After the steel strand connected by the clamp is cut, the steel strand will rotate after cutting because the steel strand is spirally wound together, causing the conical clamp assembly 274 to rotate. The second clamp block 275 plays a secondary positioning, limiting and clamping role on the steel strand, and also prevents the self-rotating steel strand from causing the conical clamp assembly 274 to rotate and generate centrifugal force to fly out of the first clamp block 273. The second clamp block 275 limits the conical clamp assembly 274 in the first clamp block 273 to prevent it from detaching, thereby improving safety.

[0060] When the baffle 271 is used as the limiting mechanism:

[0061] The steel strand is placed into the wedge-shaped hole 277 of the first clamp block 273 through the placement opening 278, and the first clamp block 273 is sleeved on the outside of the steel strand. Then, the conical clamp assembly 274 is inserted into the wedge-shaped hole 277 from the opening on the side of the first clamp block 273 close to the baffle 271, and sleeved on the outside of the steel strand. The conical clamp assembly 274 is used to clamp the steel strand in the wedge-shaped hole 277. After the connected steel strand is cut, because the steel strands are spirally wound together, the steel strands will rotate after cutting. Therefore, it is necessary to fix the baffle 271 at the end with the largest diameter of the wedge-shaped hole 277 in the first clamp block 273. The diameter of the opening 2711 of the baffle 271 is larger than the diameter of the steel strand and smaller than the maximum diameter of the conical clamp assembly 274, so that the conical clamp assembly 274 can be prevented from flying out.

[0062] In the description of this application, it should be noted that the terms "upper" and "lower" and the like 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 this application and simplifying the description, and do not indicate or imply 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 this 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 an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0063] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any 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 comprising 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, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0064] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A clamp for a steel strand stay cable, characterized in that: include: a first clamp block (273), wherein the first clamp block (273) is sleeved on the outside of the steel strand, and a first clamping assembly for clamping the steel strand is provided in the first clamp block (273); A limiting mechanism is used to limit the first clamping assembly from being separated from the first clamp block (273), and the limiting mechanism is arranged on one side of the first clamp block (273).

2. The clamp for a steel strand stay cable according to claim 1, wherein: The limiting mechanism comprises a second clamp block (275) provided on one side of the first clamp block (273) and used for limiting the separation of the first clamping assembly; A second clamping assembly for secondary clamping of the steel strand is provided in the second clamp block (275).

3. The clamp for a steel strand stay cable according to claim 2, wherein: The first clamp block (273) and the second clamp block (275) are both provided with wedge-shaped holes (277) inside, and both ends are open. The outer walls of the first clamp block (273) and the second clamp block (275) are both provided with placement openings (278) communicating with the wedge-shaped hole (277).

4. The clamp for a steel strand stay cable according to claim 3, wherein: The placement opening (278) of the first fixture block (273) and the placement opening (278) of the second fixture block (275) have opening directions opposite to each other.

5. The clamp for a steel strand stay cable according to claim 3, wherein: A threaded section (2731) is provided on one side of the first clamp block (273), and an internal thread (2751) is provided inside the wedge-shaped hole (277) of the second clamp block (275) to cooperate with the threaded section (2731).

6. The clamp for a steel strand stay cable according to claim 3, wherein: The first clamping assembly is disposed in a wedge-shaped hole (277) of a first clamping block (273), and the second clamping assembly is disposed in a wedge-shaped hole (277) of a second clamping block (275); The first clamping assembly and the second clamping assembly are both tapered clip assemblies (274).

7. The clamp for a steel strand stay cable according to claim 1, wherein: The limiting mechanism comprises a baffle (271) arranged on one side of the first clamp block (273) and used for limiting the separation of the first clamping assembly.

8. The clamp for a steel strand stay cable according to claim 7, wherein: A wedge-shaped hole (277) is provided inside the first clamp block (273) and is open at both ends, and the baffle (271) is located on a side of the first clamp block (273) close to the end with the largest diameter of the wedge-shaped hole (277); The first clamping assembly is disposed in the wedge-shaped hole (277), and the first clamping assembly is a tapered clip assembly (274).

9. The clamp for a steel strand stay cable according to claim 8, characterized in that: The baffle (271) is provided with an opening (2711), and the opening diameter of the opening (2711) is smaller than the maximum diameter of the tapered clip assembly (274).

10. The clamp for a steel strand stay cable according to claim 1, wherein: The outer side of the first clamp block (273) is provided with a lifting ring (272) connected to the outside.

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