Grounding clamp with self-locking structure
The anti-dislodgement grounding clamp, with its self-locking structure and rubber pad design, solves the problem of grounding clamps loosening and falling off under external force, achieving stable clamping and operational safety, and improving the safety and convenience of power operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN CHENDIAN ELECTRONICS CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-14
AI Technical Summary
Existing grounding clamps are prone to loosening and falling off under mechanical vibration or external impact, resulting in clamping failure and posing a safety hazard, especially in high-voltage power operations.
It adopts a self-locking structure, which uses the meshing mechanism of ratchet and pawl to achieve self-locking after clamping. Combined with the elastic energy storage and release of spring, it ensures clamping stability. Rubber pads are added to the clamping parts to prevent scratches to the operator, and a convenient replacement structure is designed.
It improves the stability and safety of the grounding clamp, prevents it from loosening and falling off, enhances the reliability of use, and provides operator protection and convenient replacement functions.
Smart Images
Figure CN224502376U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-detachment grounding clamp technology, and in particular to an anti-detachment grounding clamp with a self-locking structure. Background Technology
[0002] Grounding clamps are commonly used safety tools in power construction, equipment maintenance, and other fields. They are used to temporarily or permanently connect grounding wires to ensure reliable grounding of equipment and prevent electric shock accidents. Traditional grounding clamps mostly use threaded fastening or spring compression to achieve clamping. However, in actual use, due to mechanical vibration, external impact, or material fatigue caused by long-term use, they are prone to loosening or even falling off, posing a significant safety hazard. Especially in high-voltage power operations, the stability of the grounding clamp is directly related to the safety of the operators. Therefore, a grounding clamp with a self-locking function to prevent falling off is needed to improve its reliability and safety.
[0003] Currently, common grounding clamps mainly rely on spring pressure or threaded locking mechanisms to achieve clamping function. Spring-type grounding clamps use the elastic deformation of metal springs to generate clamping force. The structure is simple, but the clamping force is prone to decrease due to spring fatigue or vibration. Threaded grounding clamps press the contact surface by tightening the screw. Although the clamping force is strong, the operation is cumbersome and the threads are prone to stripping after long-term use. In addition, some improved grounding clamps adopt a lever force-increasing structure, which can enhance the initial clamping force, but still cannot effectively prevent accidental loosening under external force. The overall stability and reliability still have a lot of room for improvement.
[0004] The main drawback of existing grounding clamps is the lack of a reliable anti-loosening mechanism. Especially when subjected to mechanical vibration or accidental collision, traditional spring or threaded structures are prone to gradually loosening due to external forces, leading to clamping failure. This situation is particularly dangerous in power operations, which can cause poor grounding or even electric shock accidents. Therefore, a grounding clamp with a self-locking function is needed, which can automatically lock after clamping to prevent loosening caused by external interference, thereby improving the safety and stability of use. To this end, an anti-loosening grounding clamp with a self-locking structure is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a grounding clamp with a self-locking structure to prevent it from falling off, which aims to improve the problem that traditional grounding clamps in the prior art are prone to loosening and falling off due to external force collisions during use.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a grounding clamp with a self-locking structure, comprising a grounding clamp body, a rotating shaft rotatably connected inside the grounding clamp body, a second spring sleeved on the outer wall of the rotating shaft, the two ends of the second spring respectively contacting the inner wall of the grounding clamp body, a connecting plate fixedly connected to the outer wall of the rotating shaft, a locking component provided on the outer wall of the rotating shaft, and a protective component provided on the outer wall of the grounding clamp body;
[0007] The locking assembly includes a ratchet, a connecting rod, and a pawl. The ratchet is internally fixedly connected to the outer wall of the rotating shaft. One end of the connecting rod is fixedly connected to the side wall of the connecting disc. The pawl is internally rotatably connected to the outer wall of the connecting rod. The pawl and the ratchet mesh with each other. A fixing rod is fixedly connected to the side wall of the pawl. A fixing rod is fixedly connected to the side wall of the connecting disc. A spring is provided on the side wall of the fixing rod.
[0008] As a further description of the above technical solution:
[0009] One end of the spring is fixedly connected to the outer wall of the fixed rod, and the other end of the spring is fixedly connected to the outer wall of the fixed rod. A pull rod is fixedly connected to the outer wall of the pawl.
[0010] As a further description of the above technical solution:
[0011] The protective component includes a fixing block, a rubber pad, and an anti-slip groove formed on the outer wall of the rubber pad. The inner wall of the fixing block is fixedly connected to the outer wall of the grounding clamp body, and the inner wall of the anti-slip groove is slidably connected to the outer wall of the grounding clamp body.
[0012] As a further description of the above technical solution:
[0013] The rubber pad has a sliding block on its side wall, and the outer wall of the sliding block is slidably connected to the outer wall of the grounding clamp body.
[0014] As a further description of the above technical solution:
[0015] An arc-shaped locking block is slidably connected inside the sliding block, and a locking hole is opened on the inner wall of the grounding clamp body, and the arc-shaped locking block and the locking hole are engaged.
[0016] As a further description of the above technical solution:
[0017] The side wall of the arc-shaped card block is fixedly connected to a limiting plate, and the outer wall of the limiting plate is slidably connected inside the sliding block.
[0018] As a further description of the above technical solution:
[0019] The side wall of the limiting plate is provided with a spring three, one end of which is fixedly connected to the side wall of the limiting plate, and the other end of which is fixedly connected to the inside of the sliding block.
[0020] This utility model has the following beneficial effects:
[0021] 1. In this utility model, when the grounding clamp body is pressed, the rotating shaft will rotate accordingly, thereby squeezing the second spring to open the opening. At the same time, the rotating shaft drives the ratchet to rotate. At this time, the pull rod can be pulled to drive the pawl to rotate on the outer wall of the connecting rod and squeeze the first spring. After the object is clamped, the pull rod is released, the first spring releases its elasticity, and drives the pawl to engage with the ratchet, achieving the effect of self-locking and fixing the clamped state. This solves the problem that traditional grounding clamps are prone to loosening and falling off due to external force collisions during use, and improves the stability of the grounding clamp during use.
[0022] 2. In this utility model, a rubber pad is added to the gripping part of the grounding clamp body to prevent scratches to the operator during use. When replacement is needed, pull the sliding block along the gripping part. After the arc-shaped locking block is squeezed, it presses the limiting plate and spring three into the sliding block. At this time, the arc-shaped locking block is released from the restriction of the locking hole. Continue to pull the sliding block until it is removed. Then pull the rubber pad to remove and replace it. This achieves the effect of providing reliable protection and convenient replacement of protective parts, solving the problem that traditional grounding clamps are prone to scratching the operator during use due to the lack of protective structure, and improving the safety of grounding clamp use. Attached Figure Description
[0023] Figure 1 This is a three-dimensional schematic diagram of a self-locking anti-detachment grounding clamp proposed in this utility model;
[0024] Figure 2 This is a schematic diagram of the connecting disc of an anti-detachment grounding clamp with a self-locking structure proposed in this utility model;
[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle
[0026] Figure 4 This invention provides a structural illustration of a spring-loaded anti-detachment grounding clamp with a self-locking structure.
[0027] intention;
[0028] Figure 5 This utility model proposes a structure for a rubber pad with a self-locking anti-detachment grounding clamp.
[0029] intention;
[0030] Figure 6 for Figure 5 Enlarged view of point B in the middle.
[0031] Legend:
[0032] 1. Grounding clamp body; 2. Rotating shaft; 3. Connecting plate; 4. Ratchet; 5. Connecting rod; 6. Pawl; 7. Fixing rod one; 8. Fixing rod two; 9. Spring one; 10. Pull rod; 11. Spring two; 12. Fixing block; 13. Rubber pad; 14. Anti-slip groove; 15. Sliding block; 16. Arc-shaped locking block; 17. Locking hole; 18. Limiting plate; 19. Spring three. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] Reference Figures 1-4 This utility model provides an embodiment of an anti-detachment grounding clamp with a self-locking structure, comprising a grounding clamp body 1, which serves as the installation base and operating carrier for the entire grounding clamp, providing a stable assembly space for the internal components and supporting the overall structure. A rotating shaft 2 is rotatably connected inside the grounding clamp body 1, passing through the connection point of two clamping arms. The rotating shaft 2 rotates in coordination with the grounding clamp body 1, allowing the clamping arms to open and close around it, thus controlling the size of the grounding clamp opening. A second spring 11 is sleeved on the outer wall of the rotating shaft 2, spirally surrounding the outer side of the rotating shaft 2. Both ends of the second spring 11 contact the inner wall of the grounding clamp body 1. The second spring 11 is used for… During the opening and closing of the grounding clamp, an elastic restoring force is provided. When the clamp arm is pressed to open the opening, the spring 11 is compressed and stores elastic potential energy. After being released, the potential energy is released to drive the clamp arm to return to its original position, thus achieving the effect of assisting the grounding clamp to return to its original position quickly. A connecting disc 3 is fixedly connected to the outer wall of the rotating shaft 2. The disc is coaxial with the rotating shaft 2. The connecting disc 3 is used to connect the rotating shaft 2 and other components, and transmit the rotation of the rotating shaft 2 to the relevant components to achieve the effect of linkage of the movement of each component. A locking component is provided on the outer wall of the rotating shaft 2 to realize the self-locking function after the grounding clamp is clamped. A protective component is provided on the outer wall of the grounding clamp body 1 to protect the operator and improve the safety of operation.
[0035] The locking assembly includes a ratchet 4, a connecting rod 5, and a pawl 6. The ratchet 4 has evenly distributed ratchet teeth on its outer circumference. The pawl 6 has a locking tooth at its end that matches the ratchet teeth of the ratchet 4. The ratchet 4 is internally fixedly connected to the outer wall of the rotating shaft 2. One end of the connecting rod 5 is fixedly connected to the side wall of the connecting disc 3. The connecting rod 5 is rod-shaped, with one end perpendicularly connected to the connecting disc 3. The pawl 6 is internally rotatably connected to the outer wall of the connecting rod 5. The pawl 6 and the ratchet 4 mesh with each other, cooperating to perform a one-way locking motion. When the ratchet 4 rotates forward with the rotating shaft 2, the pawl 6 slides on the ratchet teeth. When the ratchet 4 rotates in the opposite direction, the pawl 6 engages with the ratchet teeth to prevent its rotation, thus limiting the reverse rotation of the rotating shaft 2. A fixing rod 7 is fixedly connected to the side wall of the pawl 6 for securing the spring. Spring 9 is fixedly connected to the side wall of the connecting disc 3 by a fixing rod 8, which provides a fixing point for the other end of spring 9. Spring 9 is provided on the side wall of fixing rod 8. One end of spring 9 is fixedly connected to the outer wall of fixing rod 7, and the other end of spring 9 is fixedly connected to the outer wall of fixing rod 8. Spring 9 cooperates with pawl 6 to perform a reset movement. When pawl 6 is pulled away from ratchet 4, spring 9 is stretched and stores potential energy. After being released, it pulls pawl 6 to reset and engage with ratchet 4, so as to ensure the stable engagement between pawl 6 and ratchet 4. Pull rod 10 is fixedly connected to the outer wall of pawl 6. Pull rod 10 is used for the operator to pull to control the position of pawl 6. By pulling pull rod 10, pawl 6 is rotated, so as to release the self-locking state.
[0036] Reference Figure 5 and Figure 6The protective component includes a fixing block 12, a rubber pad 13, and an anti-slip groove 14 formed on the outer wall of the rubber pad 13. The inner wall of the fixing block 12 is fixedly connected to the outer wall of the grounding clamp body 1. The fixing block 12 is used to limit the installation position of the protective component and prevent the rubber pad 13 from sliding excessively, thereby achieving the effect of positioning the protective component. The inner wall of the anti-slip groove 14 is slidably connected to the outer wall of the grounding clamp body 1. The anti-slip groove 14 consists of multiple parallel grooves. The anti-slip groove 14 is used to increase the friction between the operator's hand and the rubber pad 13, preventing slippage during operation and improving operational stability. A sliding block 15 is provided on the side wall of the rubber pad 13. The rubber pad 13 wraps around the gripping part of the grounding clamp body 1. The outer wall of the sliding block 15 is slidably connected to the outer wall of the grounding clamp body 1. The sliding block 15 moves in conjunction with the grounding clamp body 1, facilitating the installation and removal of the rubber pad 13 and making it easy to replace the rubber pad 13. An arc-shaped locking block 16 is slidably connected inside the sliding block 15. The end of the arc-shaped locking block 16 is arc-shaped, which facilitates the sliding under force. The grounding clamp body 1 has a locking hole 17 on its inner wall, which matches the arc-shaped locking block 16. The arc-shaped locking block 16 and the locking hole 17 engage, and the two cooperate to perform fixed movement. When the arc-shaped locking block 16 is engaged in the locking hole 17, it fixes the sliding block 15 and prevents the rubber pad 13 from loosening. A limit plate 18 is fixedly connected to the side wall of the arc-shaped locking block 16. The outer wall of the limit plate 18 is slidably connected to the inside of the sliding block 15. The limit plate 18 is used to limit the sliding distance of the arc-shaped locking block 16 and prevent it from sliding off the sliding block 15. The detachment within 5 achieves the effect of constraining the position of the arc-shaped locking block 16. A spring 3 19 is provided on the side wall of the limiting plate 18. One end of the spring 3 19 is fixedly connected to the side wall of the limiting plate 18, and the other end of the spring 3 19 is fixedly connected to the inside of the sliding block 15. The spring 3 19 cooperates with the arc-shaped locking block 16 to perform telescopic movement. When the arc-shaped locking block 16 is squeezed, the spring 3 19 contracts to store potential energy. After being released, it pushes the arc-shaped locking block 16 to reset and lock into the locking hole 17, ensuring that the arc-shaped locking block 16 and the locking hole 17 are stably locked.
[0037] Working principle: When using the grounding clamp body 1, pressing the clamping arm of the grounding clamp body 1 causes the rotating shaft 2 to rotate around the connecting part with the clamping arm. At the same time, the spring 11 is compressed, causing it to contract and store elastic potential energy. The clamping arm opening opens accordingly. When the rotating shaft 2 rotates, it drives the ratchet 4 fixed on the outer wall to rotate synchronously. At this time, the connecting disc 3 rotates with the rotating shaft 2, and the connecting rod 5 on its side wall drives the pawl 6 to move. Since the pawl 6 is engaged with the ratchet 4, when the ratchet 4 rotates in the forward direction, the pawl 6 slides on the ratchet teeth. When the grounding clamp clamps the object, the pull rod 10 is released, and the spring 9 releases the potential energy stored when stretched, pulling the fixing rod 7, causing the pawl 6 to rotate around the connecting rod 5 and tightly engage with the ratchet 4. At this time, the ratchet 4 cannot rotate in the reverse direction, thus restricting the rotating shaft 2 from reversing, achieving self-locking fixation in the clamped state, and avoiding loosening and falling off due to external force collision. When it is necessary to release the self-locking, pull the pull rod 10 to drive the ratchet 6 to rotate. Pawl 6 disengages from ratchet 4, spring 9 is stretched, and shaft 2 resets under the action of spring 11, causing the clamping arm to open. The gripping part of the grounding clamp body 1 is wrapped by rubber pad 13. The anti-slip groove 14 on its outer wall increases the friction of the hand to prevent slippage during operation and avoids direct contact with metal parts that could cause scratches. Fixing block 12 limits rubber pad 13 to prevent it from sliding excessively. When replacing rubber pad 13, pull sliding block 15 along grounding clamp body 1. Arc-shaped locking block 16 is squeezed and moves into sliding block 15, pushing limiting plate 18 to compress spring 19. Arc-shaped locking block 16 disengages from locking hole 17, and sliding block 15 and rubber pad 13 can be removed. When installing a new rubber pad 13, sliding block 15 slides along the body, and arc-shaped locking block 16 is squeezed and retracts. After it is in place, spring 19 pushes limiting plate 18 to reset, and arc-shaped locking block 16 locks into locking hole 17, completing the fixation.
Claims
1. A grounding clamp with a self-locking structure to prevent detachment, comprising a grounding clamp body (1), characterized in that: The grounding clamp body (1) is rotatably connected to a rotating shaft (2). A second spring (11) is sleeved on the outer wall of the rotating shaft (2). The two ends of the second spring (11) are in contact with the inner wall of the grounding clamp body (1). A connecting plate (3) is fixedly connected to the outer wall of the rotating shaft (2). A locking component is provided on the outer wall of the rotating shaft (2). A protective component is provided on the outer wall of the grounding clamp body (1). The locking assembly includes a ratchet (4), a connecting rod (5), and a pawl (6). The ratchet (4) is internally fixedly connected to the outer wall of the rotating shaft (2). One end of the connecting rod (5) is fixedly connected to the side wall of the connecting disc (3). The pawl (6) is internally rotatably connected to the outer wall of the connecting rod (5). The pawl (6) and the ratchet (4) mesh with each other. A fixing rod (7) is fixedly connected to the side wall of the pawl (6). A fixing rod (8) is fixedly connected to the side wall of the connecting disc (3). A spring (9) is provided on the side wall of the fixing rod (8).
2. The anti-dislodgement grounding clamp with a self-locking structure according to claim 1, characterized in that: One end of the spring (9) is fixedly connected to the outer wall of the fixed rod (7), and the other end of the spring (9) is fixedly connected to the outer wall of the fixed rod (8). A pull rod (10) is fixedly connected to the outer wall of the pawl (6).
3. The anti-dislodgement grounding clamp with a self-locking structure according to claim 1, characterized in that: The protective assembly includes a fixing block (12), a rubber pad (13), and an anti-slip groove (14) formed on the outer wall of the rubber pad (13). The inner wall of the fixing block (12) is fixedly connected to the outer wall of the grounding clamp body (1), and the inner wall of the anti-slip groove (14) is slidably connected to the outer wall of the grounding clamp body (1).
4. The anti-dislodgement grounding clamp with a self-locking structure according to claim 3, characterized in that: The side wall of the rubber pad (13) is provided with a sliding block (15), and the outer wall of the sliding block (15) is slidably connected to the outer wall of the grounding clamp body (1).
5. The anti-detachment grounding clamp with a self-locking structure according to claim 4, characterized in that: The sliding block (15) has an arc-shaped locking block (16) slidably connected inside, and the grounding clamp body (1) has a locking hole (17) on its inner wall. The arc-shaped locking block (16) and the locking hole (17) engage with each other.
6. The anti-dislodgement grounding clamp with a self-locking structure according to claim 5, characterized in that: The side wall of the arc-shaped card block (16) is fixedly connected to a limiting plate (18), and the outer wall of the limiting plate (18) is slidably connected inside the sliding block (15).
7. A grounding clamp with a self-locking structure for preventing grounding failure as described in claim 6, characterized in that: The side wall of the limiting plate (18) is provided with a spring three (19), one end of the spring three (19) is fixedly connected to the side wall of the limiting plate (18), and the other end of the spring three (19) is fixedly connected to the inside of the sliding block (15).