A strain clamp that is easy to operate

By introducing a gear transmission system into the tension clamp, the two clamping caps are tightened simultaneously, solving the problems of uneven force distribution and low installation efficiency of existing tension clamps, and achieving uniform clamping and efficient installation.

CN224305364UActive Publication Date: 2026-05-29ZHEJIANG SUNJ ELECTRIC CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG SUNJ ELECTRIC CO LTD
Filing Date
2025-05-22
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing bolt-type tension clamps suffer from uneven force distribution, asymmetrical tightening, and low installation efficiency during installation, making them particularly cumbersome to operate in confined spaces or at heights.

Method used

An easy-to-operate tension clamp was designed. By setting multiple clamping blocks and U-bolts in the cable groove, and using a gear transmission system to tighten two clamping caps simultaneously, a consistent clamping force is achieved, simplifying the operation process.

Benefits of technology

It achieves uniform cable clamping force, simplifies operation steps, improves installation efficiency, and reduces operational complexity.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224305364U_ABST
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Abstract

The utility model discloses a kind of strain clamp convenient to operate, including strain clamp main part, the cable groove is set in strain clamp main part one side, the multiple wire pressing blocks are movably arranged in the cable groove, the recess is set in the top of wire pressing block, U-shaped bolt is embedded in the recess, the bottom of cable groove is equipped with multiple baffle, the end of baffle away from cable groove is equipped with slide bar, rotating sleeve is sleeved on the slide bar, gear one is equipped in one end of rotating sleeve, the both ends of U-shaped bolt respectively pass the both ends of baffle, and are threadedly connected with compression cap, gear two is equipped in one end of compression cap, gear one is engaged with gear two on both sides. The utility model only needs to rotate rotating sleeve when operating, the transmission between gear one and gear two makes that two compression caps can be simultaneously tightened, so that the tightening force of two compression caps is consistent, the clamping force distribution of cable is uniform, and the operation complexity is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of tension clamp technology, specifically to an easy-to-operate tension clamp. Background Technology

[0002] Tension clamps are essential hardware in power transmission lines used to fix and anchor conductors or ground wires (lightning protection wires). They primarily bear mechanical loads, ensuring reliable connection of conductors under tension while maintaining electrical performance. Used in tension sections of lines (such as corners, terminals, or long spans), they bear the full tensile force of the conductor, preventing it from loosening. They fix conductors or ground wires to poles, towers, and insulator strings, replacing the sliding support function of suspension clamps. Some designs require ensuring good contact when current flows through the clamp to reduce resistance and heat generation.

[0003] Existing bolt-type tension clamps require tightening the nuts at both ends of the U-bolt during installation. While this method is simple, it has the following drawbacks:

[0004] 1. Risk of uneven force distribution

[0005] Asymmetrical fastening: If the tightening sequence or force of the two nuts is inconsistent, it will lead to uneven distribution of wire clamping force, which may cause local pressure deformation of the conductor cable (such as damage to the surface of aluminum stranded wire) or stress concentration on one side of the clamp, resulting in problems such as loosening or breakage of bolts after long-term operation.

[0006] 2. Low installation efficiency

[0007] Repeated adjustments: It requires alternating tightening of the nuts on both sides to achieve balance, which is cumbersome and time-consuming, especially when working in confined spaces or at heights.

[0008] Therefore, the applicant has made beneficial designs and found a way to solve the above problems. The technical solution to be introduced below is generated in this context. Utility Model Content

[0009] The present invention provides an easy-to-operate tension clamp to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] An easy-to-operate tension clamp includes a tension clamp body. A cable groove is provided on one side of the tension clamp body. Multiple clamping blocks are movably arranged in the cable groove. Each clamping block has a groove on its top, and a U-bolt is embedded in each groove. Multiple baffles are provided at the bottom of the cable groove. Each baffle has a sliding rod at its end away from the cable groove. A rotating sleeve is fitted on the sliding rod. A gear is provided at one end of the rotating sleeve. The two ends of the U-bolt pass through the two ends of the baffle and are threadedly connected to a clamping cap. A gear is provided at one end of each clamping cap. The gear meshes with the gears on both sides.

[0012] Preferably, each slide rod is fitted with a spring, and each slide rod end is provided with a stop block, with the two ends of the spring abutting against the rotating sleeve and the stop block respectively.

[0013] Preferably, the outer part of the rotating sleeve is hexagonal nut-shaped.

[0014] Beneficial effects

[0015] The above-mentioned technical solutions of one or more of the easy-to-operate tension clamps provided in this embodiment of the utility model have at least one of the following technical effects:

[0016] Through the above-mentioned technical solution, this utility model allows for the clamping and fixing of cables by simply turning the rotating sleeve during operation. The transmission between gear one and gear two enables the two clamping caps to be tightened simultaneously, thus ensuring that the tightening force of the two clamping caps is consistent and the clamping force on the cable is evenly distributed. Furthermore, there is no need to alternately tighten the two clamping caps during operation, which not only simplifies the operation but also reduces the complexity of the operation and improves the installation efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 2 .

[0019] The correspondence between the labels and component names in the attached figures is as follows:

[0020] 1. Tension clamp body; 2. Cable tray; 3. Pressure block; 4. Groove; 5. U-bolt; 6. Baffle; 7. Slide rod; 8. Rotating sleeve; 9. Gear 1; 10. Pressure cap; 11. Gear 2; 12. Spring; 13. Stop block. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments.

[0025] like Figure 1-2 As shown, it is a structural schematic diagram of a preferred embodiment of the present invention, which is an easy-to-operate tension clamp.

[0026] In this embodiment, a tension clamp body 1 is included. A cable groove 2 is provided on one side of the tension clamp body 1 for placing cables. Multiple clamping blocks 3 are movably arranged in the cable groove 2, with at least two clamping blocks 3 for clamping the cables. Each clamping block 3 has a groove 4 on its top, and a U-bolt 5 is embedded in each groove 4. Multiple baffles 6 are provided at the bottom of the cable groove 2. Each baffle 6 has a sliding rod 7 at its end away from the cable groove 2. The sliding rod 7 is perpendicular to the baffle 6. A rotating sleeve 8 is fitted on the sliding rod 7. A gear 9 is provided at one end of the rotating sleeve 8. The two ends of the U-bolt 5 pass through the two ends of the baffle 6 and are threadedly connected to a clamping cap 10. A gear 11 is provided at one end of each clamping cap 10. The gear 9 meshes with the gear 11 on both sides. During operation, the cable is placed in the cable groove 2. By turning the rotating sleeve 8, the gear 9 rotates, which drives the gears 11 on both sides to rotate, thereby causing the clamping caps 10 on both sides to rotate and tighten simultaneously. This allows the U-bolt 5 to clamp the clamping block 3, thus completing the clamping of the cable. This ensures that the two clamping caps 10 tighten with the same force, and the clamping force on the cable is evenly distributed. Furthermore, there is no need to alternately tighten the two clamping caps 10, reducing the complexity of the operation.

[0027] In this embodiment, each slide rod 7 is fitted with a spring 12, and each slide rod 7 is provided with a stop block 13 at its end. The two ends of the spring 12 abut against the rotating sleeve 8 and the stop block 13 respectively. The spring force of the spring 12 presses the rotating sleeve 8 against the pressure cap 10, so that the gear 1 9 and the gear 2 11 can always maintain a meshing state.

[0028] In this embodiment, the outer part of the rotating sleeve 8 is in the shape of a hexagonal nut, which allows the rotating sleeve 8 to be operated using a wrench.

[0029] This utility model provides an easy-to-operate tension clamp. Its installation, connection, or setting methods are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented.

[0030] All technologies not described in detail in this utility model are known technologies. Those skilled in the art can easily implement this utility model based on their understanding of this specification, and the contents shown in the accompanying drawings are part of this specification.

[0031] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An easy-to-operate tension clamp, comprising a tension clamp body (1), characterized in that: The tension clamp body (1) has a cable groove (2) on one side. Multiple pressure blocks (3) are movably arranged in the cable groove (2). Each pressure block (3) has a groove (4) on its top. Each groove (4) has a U-bolt (5) embedded in it. Multiple baffles (6) are provided at the bottom of the cable groove (2). Each baffle (6) has a sliding rod (7) at the end away from the cable groove (2). A rotating sleeve (8) is fitted on the sliding rod (7). One end of the rotating sleeve (8) has a gear (9). The two ends of the U-bolt (5) pass through the two ends of the baffle (6) and are threaded to a clamping cap (10). One end of the clamping cap (10) has a gear (11). The gear (9) meshes with the gears (11) on both sides.

2. The easy-to-operate tension clamp according to claim 1, characterized in that: Each slide rod (7) is fitted with a spring (12), and each slide rod (7) has a stop block (13) at its end. The two ends of the spring (12) abut against the rotating sleeve (8) and the stop block (13) respectively.

3. The easy-to-operate tension clamp according to claim 1, characterized in that: The rotating sleeve (8) has a hexagonal nut-shaped exterior.