A clamping device for grounding

Abstract

The application discloses a clamping device for grounding, comprising a first clamping jaw, a pressing plate arranged on both sides of the first clamping jaw and movably connected with the first clamping jaw and capable of moving along the axial direction of the cable, a second clamping jaw arranged in the first clamping jaw, and a connecting plate arranged on both sides of the second clamping jaw and fixedly connected with the second clamping jaw and provided with a wedge block facing the first clamping jaw; when the second clamping jaw approaches the top of the first clamping jaw, the inclined surface of the wedge block abuts against the pressing plate, and the pressing plate moves away from the first clamping jaw. Thus, the rubber residual edge is far away from the clamping area of the first clamping jaw and the second clamping jaw on the cable, the clamping jaw cannot closely adhere to the exposed conductor due to the misclamping of the rubber residual edge, effective protection is formed on the exposed area of the cable, and the grounding safety and the reliability of the electrical connection are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of power construction equipment technology, and in particular to a clamping device for grounding. Background Technology

[0002] In the daily operation and maintenance of power systems, to ensure the personal safety of workers and prevent electric shock accidents, reliable grounding of cables is required before maintenance work begins. The procedure typically involves first circumferentially cutting the cable, stripping the insulation material from that area to expose the internal conductive core (i.e., the circumferentially cut bare area), and then clamping the grounding wire clamp to the circumferentially cut bare area for grounding.

[0003] While the above-described operation can effectively expose the conductive area, in actual construction, due to the sharpness of the tools, the operating technique, and the material characteristics of the cable insulation layer itself, the end face after circumferential cutting is often difficult to achieve a completely flat and smooth surface, and protruding rubber remnants are common. When workers use grounding clamps to hold the circumferentially cut exposed area of ​​the cable, the clamps will inevitably come into contact with these protruding rubber remnants during the closing process, causing the clamps to not fit tightly against the circumferentially cut exposed area of ​​the cable, creating a safety hazard. Summary of the Invention

[0004] The technical problem to be solved by this invention is: how to make the grounding wire clamp fit tightly against the exposed area of ​​the circumferential cut of the cable.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a clamping device for grounding, comprising: First gripper; A fixing shell is disposed on the first gripper; The pressure plate is located on both sides of the first clamping claw and is movably connected to the fixed shell, and can move along the axial direction of the cable. The second gripper is located inside the first gripper. A connecting plate is disposed on both sides of the second gripper and is fixedly connected to the second gripper, and is provided with a wedge block facing the first gripper; When the second gripper approaches the top of the first gripper, the inclined surface of the wedge abuts against the pressure plate, and the pressure plate moves away from the first gripper.

[0006] The beneficial effects of this invention are as follows: It provides a clamping device for grounding. Through the cooperation of pressure plates on both sides of the first clamp and connecting plates fixedly connected to both sides of the second clamp, when the second clamp moves toward the top of the first clamp, the inclined surface of the wedge block on the connecting plate abuts against the pressure plate and pushes the pressure plate away from the first clamp along the axial direction of the cable. This squeezes the protruding rubber residue on the circumferential end face of the cable toward the side closer to the circumferential end face of the cable, thereby moving the rubber residue away from the clamping area of ​​the first and second clamps on the cable. This avoids the clamps from being unable to tightly adhere to the exposed conductor due to accidentally clamping the rubber residue, thus forming effective protection for the exposed area of ​​the cable and significantly improving grounding safety and electrical connection reliability. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of a clamping device for grounding according to an embodiment of the present invention; Figure 2 This is a schematic diagram of another state of a clamping device for grounding according to an embodiment of the present invention; Figure 3 This is a partial enlarged view of location A in embodiment A of the present invention; Figure 4 This is a schematic diagram of the structure of a clamping device for grounding according to an embodiment of the present invention from another angle; Figure 5 This is a schematic diagram of the gripper structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the first gripper and the grinding disc in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the pressure plate according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the grounding ring, grounding ring cover, and grounding protective cover according to an embodiment of the present invention; Reference numerals: 1. Clamping ring; 2. First clamping jaw; 3. Second clamping jaw; 4. Pressure plate; 5. Cable; 6. Connecting plate; 7. Fixing component; 8. Telescopic rod; 9. Anti-loosening component; 10. Grounding ring; 11. Grounding ring cover; 12. Grounding protective cover; 13. Insulating shell; 14. Fixing shell; 15. Grinding disc; 16. Raised strip; 21. Clamping part; 22. Mounting part; 221. Threaded hole; 31. Adjusting bolt; 41. First pressure plate; 42. Second pressure plate; 43. Fixing hole; 51. Circumferential cut exposed area; 61. Wedge block; 62. Inclined surface; 71. Spring ball; 81. First telescopic rod; 82. Second telescopic rod; 91. Helical spring; 911. Helical part; 92. Adjusting button; 101. Grounding part; 111. Support rod; 112. Balance rod; 113. Limiting part; 121. Limiting hole; 141. Moving part. Detailed Implementation

[0008] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0009] To at least solve the above problems, please refer to Figures 1 to 8 The present invention provides a clamping device for grounding, comprising: First gripper 2; A fixed shell 14 is disposed on the first gripper 2; The pressure plate 4 is located on both sides of the first gripper 2 and is movably connected to the fixed shell 14, and can move along the axial direction of the cable 5. The second gripper 3 is disposed inside the first gripper 2; A connecting plate 6 is disposed on both sides of the second gripper 3 and is fixedly connected to the second gripper 3, and is provided with a wedge 61 facing the first gripper 2; When the second gripper 3 approaches the top of the first gripper 2, the inclined surface 62 of the wedge 61 abuts against the pressure plate 4, and the pressure plate 4 moves away from the first gripper 2.

[0010] As can be seen from the above description, the beneficial effects of the present invention are as follows: through the cooperation of the pressure plates 4 on both sides of the first clamping claw 2 and the connecting plates 6 fixedly connected to the second clamping claw 3 on both sides, when the second clamping claw 3 moves toward the top of the first clamping claw 2, the inclined surface 62 of the wedge block 61 on the connecting plate 6 abuts against the pressure plate 4 and pushes the pressure plate 4 away from the first clamping claw 2 along the axial direction of the cable 5, squeezing the protruding rubber residue on the circumferential end face of the cable 5 toward the side close to the circumferential end face of the cable 5, thereby making the rubber residue away from the clamping area of ​​the first clamping claw 2 and the second clamping claw 3 on the cable 5, avoiding the clamping claw from being unable to tightly fit the exposed conductor due to accidentally clamping the rubber residue, thereby forming effective protection for the exposed area of ​​the cable 5, significantly improving grounding safety and electrical connection reliability.

[0011] Furthermore, the pressure plate 4 includes: The first pressure plate 41 is semi-circular in shape and has a fixing hole 43; The second pressure plate 42 is semi-circular in shape and has fixing holes 43; The first pressure plate 41 is disposed above the second pressure plate 42; The inner diameter of the complete ring formed by the first pressure plate 41 and the second pressure plate 42 is less than or equal to the outer diameter of the circumferentially cut exposed area 51.

[0012] As can be seen from the above description, the first pressure plate 41 and the second pressure plate 42 are semi-circular ring structures with fixing holes 43. The inner diameter of the complete ring formed by the two is less than or equal to the outer diameter of the circumferential exposed area 51, which can cover the exposed conductor of the cable 5. Thus, during the movement, the pressure plate 4 can squeeze the protruding rubber residue on the circumferential end face of the cable 5 towards the side closer to the end face.

[0013] Furthermore, it also includes: A fixed shell 14 is disposed on the first gripper 2 and includes a telescopic rod 8; The fixing member 7 is provided in the fixing hole 43, and the first pressure plate 41 and the second pressure plate 42 are detachably connected through the fixing member 7; The telescopic rod 8 is used to provide guidance and restoring force for the pressure plate 4. One end of the telescopic rod 8 is fixedly connected to the pressure plate 4, and the other end is fixedly connected to the fixed shell 14.

[0014] As can be seen from the above description, the first pressure plate 41 and the second pressure plate 42 are detachably connected by the fastener 7, which is convenient for use; The telescopic rod 8 connects the pressure plate 4 and the fixed shell 14, providing guidance and reset functions for the movement of the pressure plate 4, ensuring that the pressure plate 4 moves smoothly under the action of the wedge block 61, avoiding jamming or deflection, and assisting the pressure plate 4 in maintaining uniform force when squeezing the rubber residue edge, so that the rubber residue edge is neatly pushed to the end face.

[0015] Furthermore, the telescopic rod 8 includes a first telescopic rod 81 and a second telescopic rod 82; The fixed shell 14 is provided with a movable part 141, which can move along the movement direction of the second gripper 3; One end of the first telescopic rod 81 is fixedly connected to the first pressure plate 41, and the other end is fixedly connected to the fixed shell 14; One end of the second telescopic rod 82 is fixedly connected to the second pressure plate 42, and the other end is fixedly connected to the moving part 141; The fastener 7 has spring balls 71 that are arranged opposite each other on both sides along its length. The first pressure plate 41 and the second pressure plate 42 are respectively provided with the fixing holes 43 at both ends; At least two of the second telescopic rods 82 are symmetrically arranged on the second pressure plate 42.

[0016] As can be seen from the above description, the cooperation between the spring ball 71 on the fixing member 7 and the fixing hole 43 enables the quick insertion and locking of the first pressure plate 41 and the second pressure plate 42, effectively preventing them from falling off. The moving part 141 can drive the second telescopic rod 82 and the second pressure plate 42 to move along the movement direction of the second gripper 3; At least two second telescopic rods 82 are symmetrically arranged on the second pressure plate 42, which can make the pressure plate 4 bear force evenly, avoid tilting or wear caused by unilateral force, extend service life, and ensure smooth and consistent squeezing action on the rubber residue edge.

[0017] Furthermore, the first gripper 2 is provided with a gripping part 21 and a mounting part 22; The second gripper 3 is disposed between the gripping part 21 and the mounting part 22; The mounting part 22 is provided with a threaded hole 221 and an anti-loosening component 9; The adjusting bolt 31 of the second gripper 3 is threaded into the threaded hole 221 and passes through the threaded hole 221 to be movably connected to the second gripper 3.

[0018] As described above, the second gripper 3 is located between the clamping part 21 and the mounting part 22. The mounting part 22 is provided with a threaded hole 221 and an anti-loosening component 9. The adjusting bolt 31 is movably connected to the second gripper 3. The adjusting bolt 31 is threadedly engaged with the threaded hole 221. By rotating the adjusting bolt 31, the position of the second gripper 3 can be adjusted, thereby adjusting the clamping force. The anti-loosening component 9 can prevent the adjusting bolt 31 from loosening during long-term use or under vibration, ensuring the stability of the clamping state.

[0019] Furthermore, the anti-loosening component 9 includes: A helical spring 91 is provided on the mounting portion 22 and includes a helical portion 911; The spiral part 911 is embedded in the threaded hole 221 and cooperates with the adjusting bolt 31. The rotation direction of the spiral part 911 when tightening is the same as the rotation direction of the adjusting bolt 31 when unscrewing. When the adjusting bolt 31 tends to loosen, the spiral part 911 can generate a frictional force that prevents the adjusting bolt 31 from loosening; Adjustment button 92 is fixedly connected to the helical spring 91 and is used to adjust the tension of the helical spring 91.

[0020] As described above, the anti-loosening component 9 includes a helical spring 91 provided on the mounting part 22 and an adjustment button 92 fixedly connected to the helical spring 91. The helical part 911 of the helical spring 91 is embedded in the threaded hole 221. The tightening direction of the helical part 911 is the same as the unscrewing direction of the adjusting bolt 31. When the bolt tends to loosen, the helical part 911 generates a frictional force that resists loosening, thereby achieving self-locking and anti-loosening. The adjustment button 92 allows users to adjust the tension of the coil spring 91 as needed, ensuring both anti-loosening effect and ease of use.

[0021] Furthermore, it also includes: A grounding ring 10 is disposed on the first gripper 2, and forms a 45° angle with the movement direction of the second gripper 3, and includes a grounding part 101; A grounding ring cover 11 is disposed on the grounding ring 10, exposing the grounding part 101, for achieving insulation protection, including a limiting part 113; A grounding protective cover 12 is provided on the grounding part 101 to achieve insulation protection; The grounding protective cover 12 is provided with a limiting hole 121. The limiting hole 121 cooperates with the limiting part 113 so that the grounding protective cover 12 is rotatably mounted on the grounding ring cover 11.

[0022] As can be seen from the above description, the arrangement of the grounding ring 10 and the second gripper 3 at a 45-degree angle can avoid interference between the grounding wire and the clamping device, and reduce safety hazards. The grounding ring cover 11 is provided on the grounding ring 10, exposes the grounding part 101 and provides insulation protection, which can provide insulation protection and prevent operators from accidentally being electrocuted; The grounding protective cover 12 provides insulation protection. It is rotatably mounted on the grounding ring cover 11 through the cooperation of the limiting hole 121 and the limiting part 113, which makes it easy for the operator to flexibly adjust the angle according to the lead-out direction of the grounding wire, so as to ensure safety and facilitate use.

[0023] Furthermore, it also includes: An insulating outer shell 13 is disposed on a fixed shell 14 and is detachably connected to the fixed shell 14 to achieve insulation protection.

[0024] As can be seen from the above description, the detachable connection between the insulating housing 13 and the fixed housing 14 facilitates wiring, adjustment, or maintenance by operators; The insulating housing 13 can isolate live parts and prevent operators from accidentally touching conductive structures such as grippers during wiring, adjustment or maintenance, which significantly reduces the risk of electric shock and improves the electrical safety of grounding operations.

[0025] Furthermore, the grounding ring cover 11 includes: The support rod 111 is fixedly connected to the grounding ring cover 11; A balance bar 112 is mounted on the support rod 111 and is detachably connected to the support rod 111.

[0026] As described above, a support rod 111 is fixed on the grounding ring cover 11, and a detachable balance rod 112 is provided on the support rod 111. The balance rod 112 is used to balance the overall center of gravity of the clamping device and improve the stability of the device.

[0027] Furthermore, it also includes: Grinding disc 15, with serrated edges; The retaining ring 1 is located on both sides of the first gripper 2 and is fixedly connected to the fixing shell 14; Both the first gripper 2 and the second gripper 3 are provided with at least one protrusion 16; The grinding disc 15 is detachably connected to the first jaw 2 and the second jaw 3.

[0028] As described above, the retaining rings 1 on both sides of the first clamping jaw 2 can increase the support area of ​​the cable 5 and prevent the exposed part from sagging and bending excessively. The first clamping jaw 2 and the second clamping jaw 3 are each provided with at least one protrusion 16, which is detachably connected to a serrated grinding disc 15. The grinding disc 15 can effectively scrape off the residual adhesive on the circumferentially cut exposed area 51 during the clamping process, ensuring a tight fit between the clamp and the cable 5 and improving conductivity. The serrated structure improves grinding efficiency. The grinding disc 15 is detachably connected to the clamping jaw, which is convenient for replacement and extends the overall service life of the clamping device.

[0029] Please refer to Figures 1 to 8 This invention provides a clamping device for grounding, which is suitable for daily operation and maintenance of power systems and is used to ensure the personal safety of operators.

[0030] A clamping device for grounding includes a first clamp 2, a second clamp 3, a pressure plate 4, a connecting plate 6, an anti-loosening component 9, a fixing shell 14, a grounding ring 10, a grounding ring cover 11, a grounding protective cover 12, and an insulating shell 13.

[0031] Specifically, in this embodiment, the first gripper 2 has an opening for gripping the cable 5, and the first gripper 2 is provided with a gripping part 21 for gripping the cable 5 and a mounting part 22 for mounting the adjusting bolt 31 and the anti-loosening component 9. The gripping part 21 is located on the opening of the first gripper 2, and the mounting part 22 is located at the bottom of the first gripper 2. A fixing shell 14 is provided on the outer surface of the first gripper 2 for fixing components such as the retaining ring 1 and the telescopic rod 8.

[0032] The pressure plates 4 are located on both sides of the first clamping claw 2 and are movably connected to the fixing shell 14 via the telescopic rod 8, allowing them to move along the axial direction of the cable 5. The pressure plates 4 include a first pressure plate 41 and a second pressure plate 42, both of which are semi-circular rings, with the first pressure plate 41 positioned above the second pressure plate 42. Fixing holes 43 are provided at both ends of the first pressure plate 41 and the second pressure plate 42, and fixing members 7 are provided in the fixing holes 43. Oppositely arranged spring balls 71 are embedded on both sides of the fixing members 7 along their length. The spring balls 71 are made of elastic material and are fixedly connected to the fixing members 7. In this embodiment, the fixing members 7 are fixedly connected to the second pressure plate 42. When the second pressure plate 42 approaches the first pressure plate 41, the fixing holes 43 engage with the fixing members 7, achieving a detachable connection between the first pressure plate 41 and the second pressure plate 42. That is, when the fixing members 7 are inserted into the fixing holes 43, the spring balls 71 are compressed and generate an elastic clamping force, thereby achieving quick connection and disassembly.

[0033] The first pressure plate 41 and the second pressure plate 42 can be closed to form a complete ring. In this embodiment, the sides of the first pressure plate 41 and the second pressure plate 42 away from the first clamping claw 2 are provided with semi-circular annular gaskets made of elastic material. The inner diameter of the ring enclosed by the gaskets is less than or equal to the outer diameter of the exposed area 51 of the cable 5, which is used to ensure that the pressure plate 4 can be tightly attached to the surface of the exposed conductor.

[0034] In this embodiment, the telescopic rod 8, used to provide a guide wire and a restoring force to the pressure plate 4, includes a first telescopic rod 81 and a second telescopic rod 82. One end of the telescopic rod 8 is fixedly connected to the pressure plate 4, and the other end is fixedly connected to the fixed housing 14. Specifically, the fixed housing 14 is also provided with a moving part 141, which can move along the movement direction of the second gripper 3. One end of the first telescopic rod 81 is fixedly connected to the first pressure plate 41, and the other end is fixedly connected to the fixed part of the fixed housing 14. One end of the second telescopic rod 82 is fixedly connected to the second pressure plate 42, and the other end is fixedly connected to the moving part 141. To ensure that the second pressure plate 42 is subjected to balanced force, at least two symmetrically arranged second telescopic rods 82 are provided on the second pressure plate 42.

[0035] The second gripper 3 is located inside the first gripper 2, between the clamping part 21 and the mounting part 22. The mounting part 22 is provided with a threaded hole 221, and an adjusting bolt 31 is connected to the bottom of the second gripper 3. The adjusting bolt 31 is threadedly engaged with the threaded hole 221 and passes through the threaded hole 221 to be movably connected to the second gripper 3, so that the second gripper 3 can move along the axial direction of the threaded hole 221.

[0036] The second gripper 3 has connecting plates 6 on both sides, which are fixedly connected to the second gripper 3. The connecting plates 6 have wedges 61 facing the first gripper 2. The inclined surface 62 of the wedges 61 faces upward and outward. When the second gripper 3 approaches the top of the first gripper 2, the wedges 61 on the connecting plates 6 begin to abut against the pressure plate 4. As the second gripper 3 continues to move upward, the inclined surface 62 of the wedges 61 pushes the first pressure plate 41 and the second pressure plate 42 to move in the direction away from the first gripper 2.

[0037] The mounting portion 22 of the first gripper 2 is provided with an anti-loosening component 9, which includes a helical spring 91 and an adjusting button 92. The helical spring 91 is located on the mounting portion 22 and has a helical portion 911. The helical portion 911 is embedded in the threaded hole 221 and engages with the thread of the adjusting bolt 31. Since the rotational direction of the tightening of the helical portion 911 is the same as the rotational direction of the unscrewing (i.e., the loosening direction) of the adjusting bolt 31, when the adjusting bolt 31 has a tendency to loosen (e.g., rotates due to vibration), the helical portion 911 will generate a frictional force that resists the loosening of the bolt due to friction, thereby achieving self-locking and anti-loosening.

[0038] The adjustment button 92 is fixedly connected to the helical spring 91 and is used to adjust the tightness of the helical spring 91. When it is necessary to actively rotate the adjusting bolt 31, press or move the adjustment button 92 to slightly open the helical part 911 and release the anti-loosening state. After the adjustment is in place, release the adjustment button 92 and the helical part 911 will tighten the bolt again.

[0039] In this embodiment, the grounding ring 10 is disposed on the first gripper 2, forming a 45° angle with the movement direction of the second gripper, and includes a grounding portion 101. A grounding ring cover 11 is disposed on the grounding ring 10, exposing the grounding portion 101, i.e., the grounding portion 101 is not covered by the grounding ring cover 11, for insulation protection, and includes a limiting portion 113. A grounding protective cover 12 is disposed on the grounding portion 101, made of insulating flexible material, also for insulation protection. The grounding protective cover 12 has a limiting hole 121, which cooperates with the limiting portion 113 on the grounding ring cover 11, allowing the grounding protective cover 12 to be rotatably disposed on the grounding ring cover 11, thereby adjusting the lead-out angle of the grounding wire according to on-site needs. An insulating outer shell 13 is disposed on the fixed shell 14, and the insulating outer shell 13 is detachably connected to the fixed shell 14, for insulation protection of the entire device, preventing operators from accidentally contacting live parts.

[0040] It is worth noting that in this embodiment, the grounding ring cover 11 also includes a support rod 111 and a balance rod 112. The support rod 111 is fixedly connected to the grounding ring cover 11, and the balance rod 112 is detachably connected to the support rod 111. The balance rod 112 is used to balance the overall center of gravity shift of the clamping device caused by the arrangement of the grounding ring 10.

[0041] In this embodiment, the surfaces of the first gripper 2 and the second gripper 3 used for gripping are each provided with at least one protrusion 16 to increase the friction during gripping.

[0042] In addition, this embodiment also includes a polishing disc 15. The polishing disc 15 is serrated and is mounted on the first jaw 2 and the second jaw 3 by cooperating with the protrusion 16. The serrations on the polishing disc 15 can be used to scrape away impurities in the exposed area and reduce contact resistance.

[0043] The method of using a grounding clamping device in this embodiment is as follows: Before use, first remove the insulating shell 13 and install the grinding disc 15 onto the protrusions 16 of the first gripper 2 and the second gripper 3. Then, adjust the adjusting bolt 31 of the second gripper 3 so that the grinding disc 15 on the first gripper 2 and the second gripper 3 is in close contact with the circumferentially exposed portion of the cable 5. Then, install the insulating shell 13. The operator manually holds the insulating shell 13, causing the grinding disc 15 to reciprocate along the axis of the cable 5, thereby cleaning the residual adhesive on the exposed portion. After cleaning, remove the insulating shell 13. While pressing the adjusting button 92, simultaneously rotate the adjusting bolt 31 in the opposite direction to move the second gripper 3 downwards. This will disengage both the first gripper 2 and the second gripper 3 from the cable 5, allowing the device and the grinding disc 15 to be removed.

[0044] In use, align the opening of the first clamp 2 with the exposed circumferential area 51 of the cable 5, and adjust the adjusting bolt 31 of the second clamp 3 so that the cable 5 passes through the opening of the first clamp 2 and enters between the first clamp 2 and the second clamp 3. Then, move the movable part 141 on the fixed housing so that the movable part 141 moves along the movement direction of the second clamp 3 and approaches the top of the first clamp 2, causing the second pressure plate 42 to close with the first pressure plate 41 to form a complete ring. At this time, further adjust the adjusting bolt 31 so that the second clamp 3 moves toward the top of the first clamp 2 until the first clamp 2 and the second clamp 3 are in close contact with the exposed circumferential area 51 of the cable 5. At the same time, as the second clamp 3 moves, the connecting plate 6 fixedly connected to the second clamp 3 moves accordingly. The inclined surface 62 of the wedge 61 on the connecting plate 6 begins to abut against the second pressure plate 42, and with the movement of the second clamp 3, pushes the ring formed by the first pressure plate 41 and the second pressure plate 42 to move to both sides of the first clamp 2, pushing the rubber residue. Since the inner diameter of the ring formed by the first pressure plate 41 and the second pressure plate 42 is less than or equal to the outer diameter of the exposed area, the pressure plate 4 pushes the rubber residue to the maximum extent.

[0045] After achieving tight clamping of the exposed area 51 of the circumferentially cut cable 5, the previously removed insulating shell 13 is installed for safety protection. The operator can perform grounding operation by adjusting the grounding protective cover 12 of the device.

[0046] When disassembly is required, first remove the insulating housing 13, then press the adjustment button 92 and rotate the adjustment bolt 31 in the opposite direction to move the second gripper 3 downwards. This disengages the wedge block 61 from the pressure plate 4, and the restoring force of the telescopic rod 8 brings the first pressure plate 41 and the second pressure plate 42 closer together. When the pressure plate 4 returns to its pre-use state, reverse the movement part 141 on the fixed housing 14 to disengage the first pressure plate 41 from the second pressure plate 42, thus completing the disassembly and removing the device from the cable 5.

[0047] Please refer to Figures 1 to 8 Another embodiment of the present invention provides a clamping device for grounding, which differs from the above embodiment in that it also includes a retaining ring 1. The retaining ring 1 is disposed on both sides of the first clamping claw 2 and is fixedly connected to the fixing shell 14. It includes two detachable semi-rings, which fix the retaining ring 1 to both ends of the exposed portion of the cable 5, thereby increasing the support area of ​​the cable 5 and preventing bending deformation caused by excessive drooping of the exposed portion.

[0048] In summary, the clamping device for grounding provided by the present invention has the following beneficial effects: 1. This device can keep the rubber residue away from the clamping area of ​​the first clamp 2 and the second clamp 3 on the cable 5, and avoid the clamps from being unable to tightly fit the exposed conductor due to accidentally clamping the rubber residue, which significantly improves the grounding safety and the reliability of the electrical connection. 2. The reliability of the device during use is ensured by the anti-loosening component 9. The tightening rotation direction of the spiral part 911 of the anti-loosening component 9 is the same as the unscrewing rotation direction of the adjusting bolt 31. When the adjusting bolt 31 tends to loosen, the spiral part 911 can generate a frictional force that hinders the loosening of the bolt, thereby achieving self-locking anti-loosening. 3. The anti-loosening component 9 is also equipped with an adjustment button 92, which can be used to adjust the spring tension for easy use; 4. The design of the retaining ring 1 can increase the support area of ​​the cable 5, avoiding excessive bending and deformation of the exposed conductor; 5. The arrangement of the grounding ring 10 and the second gripper 3 at a 45-degree angle in their direction of movement can avoid interference between the grounding wire and the clamping device, reducing safety hazards.

[0049] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A clamping device for grounding, characterized in that, include: First gripper; A fixing shell is disposed on the first gripper; The pressure plate is located on both sides of the first clamping claw and is movably connected to the fixed shell, and can move along the axial direction of the cable. The second gripper is located inside the first gripper. A connecting plate is disposed on both sides of the second gripper and is fixedly connected to the second gripper, and is provided with a wedge block facing the first gripper; When the second gripper approaches the top of the first gripper, the inclined surface of the wedge abuts against the pressure plate, and the pressure plate moves away from the first gripper.

2. The clamping device for grounding according to claim 1, characterized in that, The pressure plate includes: The first pressure plate is semi-circular in shape and has fixing holes; The second pressure plate is semi-circular in shape and has fixing holes; The first pressure plate is positioned above the second pressure plate; The inner diameter of the complete ring formed by the first pressure plate and the second pressure plate is less than or equal to the outer diameter of the exposed area.

3. A clamping device for grounding according to claim 2, characterized in that, Also includes: The fixed housing includes a telescopic rod; A fastener is provided in the fixing hole, and the first pressure plate and the second pressure plate are detachably connected through the fastener. The telescopic rod is used to provide guidance and restoring force for the pressure plate. One end of the telescopic rod is fixedly connected to the pressure plate, and the other end is fixedly connected to the fixed shell.

4. A clamping device for grounding according to claim 3, characterized in that: The telescopic rod includes a first telescopic rod and a second telescopic rod; The fixed shell is provided with a movable part, which can move along the movement direction of the second gripper; One end of the first telescopic rod is fixedly connected to the first pressure plate, and the other end is fixedly connected to the fixed shell; One end of the second telescopic rod is fixedly connected to the second pressure plate, and the other end is fixedly connected to the moving part; The fastener has opposing spring balls embedded on both sides along its length. The first pressure plate and the second pressure plate are respectively provided with the fixing holes at both ends; At least two second telescopic rods are symmetrically arranged on the second pressure plate.

5. A clamping device for grounding according to claim 1, characterized in that: The first gripper is provided with a gripping part and a mounting part; The second gripper is disposed between the gripping part and the mounting part; The mounting part is provided with threaded holes and anti-loosening components; The adjusting bolt of the second gripper is threaded into the threaded hole and passes through the threaded hole to be movably connected to the second gripper.

6. A clamping device for grounding according to claim 5, characterized in that, The anti-loosening component includes: A helical spring, disposed on the mounting portion, includes a helical portion; The spiral part is embedded in the threaded hole and cooperates with the adjusting bolt. The rotation direction of the spiral part when tightening is the same as the rotation direction of the adjusting bolt when unscrewing. When the adjusting bolt tends to loosen, the spiral part can generate a frictional force that prevents the adjusting bolt from loosening; An adjustment button, fixedly connected to the helical spring, is used to adjust the tension of the helical spring.

7. A clamping device for grounding according to claim 1, characterized in that, Also includes: A grounding ring, disposed on the first gripper, forms a 45° angle with the direction of movement of the second gripper, and includes a grounding portion; A grounding ring cover, disposed on the grounding ring, exposes the grounding portion and is used to achieve insulation protection, including a limiting portion; A grounding protective cover is installed on the grounding part to achieve insulation protection; The grounding protective cover is provided with a limiting hole, and the cooperation between the limiting hole and the limiting part allows the grounding protective cover to be rotatably mounted on the grounding ring cover.

8. A clamping device for grounding according to claim 1, characterized in that, Also includes: An insulating outer shell is disposed on a fixed shell and is detachably connected to the fixed shell to achieve insulation protection.

9. A clamping device for grounding according to claim 7, characterized in that, The grounding ring includes: The support rod is fixedly connected to the grounding ring cover; A balance bar is mounted on the support rod and is detachably connected to the support rod.

10. A clamping device for grounding according to claim 1, characterized in that, Also includes: The grinding disc is serrated. A retaining ring is provided on both sides of the first gripper and is fixedly connected to the fixing shell; Both the first gripper and the second gripper are provided with at least one protrusion. The grinding disc is detachably connected to the first jaw and the second jaw.

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