Strain clamp
By setting a cross-path design of limiting cam and fixed cam in the insertion path of the wedge block, combined with the swing bar and limiting block, the problem of wire slippage caused by swaying in the tension clamp is solved, and stable fixation is achieved in a vibration environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGSHENG ELECTRIC POWER SCI & TECH
- Filing Date
- 2026-02-06
- Publication Date
- 2026-05-15
AI Technical Summary
During an earthquake, the conductor may sway back and forth in the tension clamp, causing the wedge block to lose its stable fixation, or even causing the conductor to fall out of the tension clamp, affecting normal use.
A limiting cam is set in the insertion path of the wedge block. The protruding part of the limiting cam abuts against the wedge block, restricting its movement out of the wedge hole. The position of the wedge block is further stabilized by the cross path design of the fixing cam and the fixing bar. Combined with the design of the swing bar and the limiting block, the fixation of the wire in the wedge hole is enhanced.
This effectively reduces the possibility of the wire falling out of the wedge-shaped hole, ensures that the wire remains stably connected during vibration, and reduces the risk of high-frequency movement and detachment.
Smart Images
Figure CN122051850A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of tension clamps, and in particular to a tension clamp. Background Technology
[0002] Tension clamps are hardware used to fix and connect power line conductors. They can withstand the tension of the conductors and hang them on tension insulator strings or towers, ensuring the stability of the line under stress. Especially with the rapid development of new technologies and innovation and entrepreneurship services, the application scenarios of tension clamps are gradually extending from traditional power systems to the broader fields of earthquake monitoring and disaster prevention and mitigation. Tension clamps can be used as installation and fixing components for earthquake monitoring equipment to build a long-term stable and high-precision earthquake observation network.
[0003] In related technologies, tension clamps include a clamp body and a wedge block. The clamp body has a wedge hole for the wedge block to slide in. A fixing block is slidably connected to the wedge block. The fixing block fixes the wire to the wedge block by fastening bolts. When the wire falls, the wire moves the wedge block in the wedge hole by its own weight, thus fixing the wedge block in the wedge hole.
[0004] Since tension clamps are used in earthquake monitoring, during an earthquake, the conductor may sway back and forth, causing the conductor to move the wedge block in the wedge hole. This makes it impossible for the wedge block to be stably fixed to the clamp body, or even causes the conductor to fall out of the tension clamp, affecting the normal use of the tension clamp. Summary of the Invention
[0005] To address the problem of conductors falling out of tension clamps during earthquakes, this application provides a tension clamp.
[0006] This application provides a tension clamp, which adopts the following technical solution: A tension clamp includes a clamp body and a wedge block. The clamp body has a wedge hole for the wedge block to slide in. The wedge block is used to fix the wire. A limiting cam is rotatably connected to the clamp body. The limiting cam is located in the insertion path of the wedge block into the wedge hole. When the wedge block is disengaged from the wedge hole, the protruding part of the limiting cam abuts against the wedge block.
[0007] By adopting the above technical solution, during an earthquake, the conductor swings back and forth. Since the limiting cam is located in the insertion path of the wedge block into the wedge hole, when the conductor drives the wedge block to move in the direction of disengaging from the wedge hole, the protruding part of the limiting cam can press against the wedge block, allowing the limiting cam to restrict the wedge block from disengaging from the wedge hole. This ensures that the wedge block can still keep the conductor in the wedge hole, greatly reducing the possibility of the conductor falling out of the wedge hole. When the conductor drives the wedge block to move in the direction of inserting into the wedge hole, the wedge structure of the wedge block and the wedge hole can press the conductor tighter and tighter, reducing the possibility of the conductor disengaging from the wedge hole.
[0008] Optionally, the wedge block is provided with a fixing strip, and the limiting cam is provided with a fixing cam. The rotation path of the fixing cam and the sliding path of the fixing strip can intersect. When the limiting cam abuts against the wedge hole, the fixing strip is located between the fixing cam and the limiting cam.
[0009] By adopting the above technical solution, the rotation path of the fixed cam and the sliding path of the fixed bar can intersect, so that the fixed cam can restrict the fixed bar from moving away from the wedge hole. In addition, the limiting cam is set on the fixed cam. When the wedge block moves away from the wedge hole, the wedge block drives the limiting cam to rotate through the fixed cam, so that the protruding part of the limiting cam can further press against the wedge block, making it difficult for the wedge block to move in the wedge hole, thereby further increasing the reliability of the wedge block in the wedge hole.
[0010] Optionally, two stop bars are fixedly connected to the surface of the fixed cam facing the limiting cam. The stop bars are elastic, and the fixed bar can be located between the two stop bars.
[0011] By adopting the above technical solution, the fixing bar is located between the two stop bars, which allows the stop bars to prevent the fixing bar from directly disengaging from the limiting cam, thereby enabling the fixing bar to stably drive the fixed cam to rotate, so that the limiting cam can further press against the wedge block.
[0012] Optionally, the clamp body is provided with a mounting rod, and the limiting cam is rotatably connected to the mounting rod; when the limiting cam does not abut against the wedge block, the fixing cam disengages from the sliding path of the fixing bar.
[0013] By adopting the above technical solution, the worker first inserts the wedge block into the wedge hole, and then the worker slides the limiting cam. Since the fixed cam is set in the limiting cam, the limiting cam abuts against the wedge block, and the fixed cam can abut against the fixing strip, so that the fixing strip can be located between the fixed cam and the limiting cam, and the wedge block will not damage the fixing strip or the fixed cam during the process of inserting into the wedge hole.
[0014] Optionally, a swing bar is rotatably connected to the wall of the wedge-shaped hole. The swing bar is used to press against the wire, and the swing path of the swing bar intersects with the moving path of the wire inserted into the wedge-shaped hole.
[0015] By adopting the above technical solution, when the wire drives the wedge block to move in the wedge hole, the swing bar presses against the wire, allowing the wire to drive the swing bar to swing. In addition, the swing path of the swing bar intersects with the moving path of the wire inserted into the wedge hole, causing one end of the swing bar to tilt up. This tilted end of the swing bar restricts the continued movement of the wire, allowing the wire to be stably positioned in the wedge hole.
[0016] Optionally, a receiving strip is slidably connected to the swing bar, and a receiving hole is provided on the wedge block for the receiving strip to be inserted; when the receiving strip is inserted into the receiving hole, the wedge block can drive the swing bar to swing.
[0017] By adopting the above technical solution, the receiving strip is inserted into the receiving hole, so that the wedge block can stably drive the swing strip to swing during the movement, so that the wire does not need to drive the swing strip to swing due to friction, and the swing strip can swing more stably with the wedge block.
[0018] Optionally, the swing bar has a receiving groove, and the receiving bar is slidably connected in the receiving groove. The distance between the receiving groove and the ground gradually decreases along the direction from the opening of the receiving groove to the bottom wall of the receiving groove. When the receiving bar abuts against the bottom wall of the receiving groove, the receiving bar can be inserted into the receiving hole, at which time the limiting cam abuts against the wedge block.
[0019] By adopting the above technical solution, the distance between the receiving groove and the ground gradually decreases along the direction from the opening of the receiving groove to the bottom wall of the receiving groove, so that the receiving strip slides in the receiving groove due to gravity and abuts against the bottom wall of the receiving groove. At this time, the receiving strip can be smoothly inserted into the receiving hole, thereby achieving relative fixation of the swing strip and the wedge block.
[0020] Optionally, a limiting hole is provided at both ends of the swing bar, and a limiting block is slidably connected in the limiting hole. The limiting block protrudes toward the side of the swing bar away from the wire. When one end of the swing bar is pressed against the wire, the limiting block at the other end of the swing bar protrudes toward the side of the swing bar closer to the wire.
[0021] By adopting the above technical solution, when the swing bar swings, one end of the swing bar can press against the wire, and the other end of the swing bar can press against the wall of the wedge hole. At this time, the limiting block presses against the wall of the wedge hole and protrudes from the limiting hole, so that the limiting block protrudes from the swing bar as before. If the wire moves in the opposite direction, the limiting block can press against the wire in advance, so that the small range of movement of the wire will not drive the limiting block to move, reducing the possibility of the wire repeatedly moving at high frequency in the wedge hole.
[0022] In summary, this application includes at least one of the following beneficial technical effects: During an earthquake, the conductor swings back and forth. Since the limiting cam is located in the insertion path of the wedge block into the wedge hole, when the conductor moves the wedge block in the direction of disengaging from the wedge hole, the protruding part of the limiting cam can press against the wedge block, allowing the limiting cam to prevent the wedge block from disengaging from the wedge hole. This ensures that the wedge block can still keep the conductor in the wedge hole, greatly reducing the possibility of the conductor falling out of the wedge hole. When the conductor moves the wedge block in the direction of inserting into the wedge hole, the wedge structure of the wedge block and the wedge hole can press the conductor tighter and tighter, further reducing the possibility of the conductor disengaging from the wedge hole.
[0023] The rotation path of the fixed cam and the sliding path of the fixed bar intersect, allowing the fixed cam to restrict the fixed bar from moving away from the wedge hole. In addition, the limiting cam is set on the fixed cam. When the wedge block moves away from the wedge hole, the wedge block drives the limiting cam to rotate through the fixed cam. This allows the protruding part of the limiting cam to further press against the wedge block, making it difficult for the wedge block to move in the wedge hole, thereby further increasing the reliability of the wedge block in the wedge hole. Attached Figure Description
[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram of the structure highlighting the retaining strip in the embodiments of this application; Figure 3 This is an exploded view of the swing groove in an embodiment of this application; Figure 4 This is a schematic diagram of the structure highlighting the swing bar in the embodiment of this application.
[0025] Reference numerals in the attached drawings: 1. Wire clamp body; 11. Wedge-shaped hole; 12. Receiving groove; 121. Mounting rod; 122. Limiting ring; 13. Limiting cam; 14. Fixing cam; 141. Stop bar; 15. Swing groove; 151. Swing bar; 152. Limiting hole; 153. Limiting block; 154. Spring block; 16. Receiving groove; 161. Receiving bar; 162. Receiving hole; 2. Wedge-shaped block; 21. Guide hole; 211. Fixing block; 22. Fixing bar. Detailed Implementation
[0026] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.
[0027] This embodiment discloses a tension clamp. (Refer to...) Figure 1A tension clamp includes a clamp body 1 and a wedge block 2. The clamp body 1 has a wedge hole 11 for the wedge block 2 to slide in, and the wedge block 2 can be inserted into the wedge hole 11 to fix the wedge block 2 and the clamp body 1.
[0028] Reference Figure 1 The wedge block 2 has a guide hole 21 for the wire to pass through on its surface. The wedge block 2 has a fixing block 211, which is fixed to the wedge block 2 by bolts. When the bolts tighten the fixing block 211, the fixing block 211 and the wedge block 2 can fix the wire, and the wire is located in the guide hole 21.
[0029] Reference Figure 1 The clamp body 1 has a receiving groove 12 that connects to the wedge-shaped hole 11. A mounting rod 121 is fixedly connected to the groove wall of the receiving groove 12. A limiting ring 122 is slidably connected to the mounting rod 121 and can rotate on the mounting rod 121. A limiting cam 13 is fixedly connected to the limiting ring 122. The protruding part of the limiting cam 13 can rotate along the receiving groove 12 into the wedge-shaped hole 11. When the limiting ring 122 abuts against the bottom wall of the receiving groove 12, the rotation path of the limiting cam 13 and the sliding path of the wedge block 2 in the wedge-shaped hole 11 intersect.
[0030] Reference Figure 1 and Figure 2 A fixed cam 14 is fixedly connected to the limiting ring 122, and a fixed strip 22 is fixedly connected to the surface of the wedge block 2. When the limiting ring 122 abuts against the bottom wall of the receiving groove 12, the moving path of the fixed strip 22 inserted into the wedge hole 11 intersects with the rotation path of the fixed cam 14. Two stop bars 141 are fixedly connected to the surface of the fixed cam 14 facing the limiting cam 13. The stop bars 141 have elastic deformation capability, and the fixed strip 22 can be inserted between the two stop bars 141.
[0031] Reference Figure 1 and Figure 2 When the wedge block 2 moves in the direction of disengaging from the wedge hole 11, the fixing bar 22 drives the fixing cam 14 to rotate, so that the fixing cam 14 drives the limiting cam 13 to rotate synchronously. The limiting cam 13 presses against the wedge block 2, so that the wedge block 2 presses against the hole wall of the wedge hole 11 and the limiting cam 13, making it difficult for the wedge block 2 to continue to move in the wedge hole 11.
[0032] Reference Figure 1 and Figure 2When the wedge block 2 moves toward the direction of insertion into the wedge hole 11, the wedge block 2 drives the limiting cam 13 to rotate, so that the limiting cam 13 drives the fixed cam 14 to rotate synchronously. The fixed strip 22 remains stably located between the two stop strips 141 to maintain the relative fixation of the fixed strip 22 and the fixed cam 14. At this time, the fixed cam 14 can press against the wedge block 2. At the same time, the inner diameter of the wedge hole 11 gradually decreases, so that the wedge block 2 can be stably located in the wedge hole 11.
[0033] Reference Figure 3 The surface of the clamp body 1 is provided with a swing groove 15 that connects to the wedge-shaped hole 11, and a swing bar 151 is rotatably connected in the swing groove 15. The swing path of the swing bar 151 intersects with the movement path of the wire inserted into the wedge-shaped hole 11, that is, the swing bar 151 is located in the wedge-shaped hole 11 and abuts against the wire.
[0034] Reference Figure 4 Two limiting holes 152 are formed on the surface of the swing bar 151, and the limiting holes 152 are respectively set at both ends of the swing bar 151. A limiting block 153 is slidably connected in the limiting hole 152, and the limiting block 153 protrudes from the limiting hole 152 in the direction away from the wire. A spring block 154 is fixedly connected to the surface of the limiting block 153. When the limiting block 153 protrudes from the limiting hole 152 in the direction of the wire, the spring block 154 abuts against the hole wall of the limiting hole 152, so that the limiting block 153 can be fixed in the limiting hole 152.
[0035] Reference Figure 4 When one end of the swing bar 151 abuts against the wire, the other end of the swing bar 151, the limiting block 153, protrudes towards the wire because it abuts against the wall of the swing groove 15. At this time, the spring block 154 abuts against the wall of the limiting hole 152, allowing the limiting block 153 to protrude towards the wire through the limiting hole 152. If the wire moves in the opposite direction, the limiting block 153 can press against the wire, making it difficult for the wire to drive the limiting block 153 to move repeatedly.
[0036] Reference Figure 4 A receiving groove 16 is formed on the surface of the swing bar 151 away from the bottom wall of the swing groove 15. The distance between the receiving groove 16 and the ground gradually decreases along the direction from the fixed rod to the bottom wall of the receiving groove 12. The receiving bar 161 is slidably connected in the receiving groove 16, and the receiving bar 161 can fall into the receiving groove 16 due to its own weight.
[0037] Reference Figure 4 The receiving strip 161 is C-shaped, and the surface of the wedge block 2 is provided with receiving holes 162 for the receiving strip 161 to be inserted. When the receiving strip 161 abuts against the bottom wall of the receiving groove 16, the receiving strip 161 can be smoothly inserted into the receiving hole 162, at which time the wedge block 2 can drive the swing strip 151 to swing.
[0038] ReferenceFigure 2 and Figure 4 When the wire moves in the wedge hole 11, the wedge block 2 drives the swing bar 151 to swing through the receiving bar 161, so that one end of the swing bar 151 can press against the wire, and the other end of the swing bar 151 can move away from the wire, allowing the limiting block 153 to protrude towards the wire.
[0039] The implementation principle of a tension clamp according to an embodiment of this application is as follows: the worker first installs the wire on the wedge block 2, then inserts the wedge block 2 into the wedge hole 11, and then the worker slides the fixing cam 14 so that the fixing strip 22 can be located in the two stop strips 141. At this time, the limiting cam 13 abuts against the wedge block 2, and the fixing cam 14 abuts against the fixing strip 22.
[0040] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0041] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.
Claims
1. A tension clamp, comprising a clamp body (1) and a wedge block (2), wherein the clamp body (1) has a wedge hole (11) for sliding the wedge block (2), and the wedge block (2) is used to fix a conductor, characterized in that: A limiting cam (13) is rotatably connected to the clamp body (1). The limiting cam (13) is located in the insertion path of the wedge block (2) into the wedge hole (11). When the wedge block (2) is disengaged from the wedge hole (11), the protruding part of the limiting cam (13) abuts against the wedge block (2).
2. The tension clamp according to claim 1, characterized in that: The wedge block (2) is provided with a fixing strip (22), and the limiting cam (13) is provided with a fixing cam (14). The rotation path of the fixing cam (14) and the sliding path of the fixing strip (22) can intersect. When the limiting cam (13) abuts against the wedge hole (11), the fixing strip (22) is located between the fixing cam (14) and the limiting cam (13).
3. A tension clamp according to claim 2, characterized in that: The fixed cam (14) has two stop bars (141) fixedly connected to its surface facing the limiting cam (13). The stop bars (141) are elastic, and the fixed bar (22) can be located between the two stop bars (141).
4. A tension clamp according to claim 2, characterized in that: The clamp body (1) is provided with an installation rod (121), and the limiting cam (13) is rotatably connected to the installation rod (121); when the limiting cam (13) does not abut against the wedge block (2), the fixing cam (14) disengages from the sliding path of the fixing bar (22).
5. A tension clamp according to claim 4, characterized in that: A swing bar (151) is rotatably connected to the wall of the wedge-shaped hole (11). The swing bar (151) is used to press against the wire. The swing path of the swing bar (151) intersects the moving path of the wire inserted into the wedge-shaped hole (11).
6. A tension clamp according to claim 5, characterized in that: A receiving bar (161) is slidably connected to the swing bar (151), and a receiving hole (162) is provided on the wedge block (2) for the receiving bar (161) to be inserted; when the receiving bar (161) is inserted into the receiving hole (162), the wedge block (2) can drive the swing bar (151) to swing.
7. A tension clamp according to claim 6, characterized in that: The swing bar (151) has a receiving groove (16), and the receiving bar (161) is slidably connected in the receiving groove (16). The distance between the receiving groove (16) and the ground gradually decreases along the direction from the opening of the receiving groove (16) to the bottom wall of the receiving groove (16). When the receiving bar (161) abuts against the bottom wall of the receiving groove (16), the receiving bar (161) can be inserted into the receiving hole (162). At this time, the limiting cam (13) abuts against the wedge block (2).
8. A tension clamp according to claim 5, characterized in that: Both ends of the swing bar (151) are provided with limiting holes (152), and limiting blocks (153) are slidably connected in the limiting holes (152). The limiting blocks (153) protrude toward the side of the swing bar (151) away from the wire. When one end of the swing bar (151) is pressed against the wire, the limiting block (153) in the other end of the swing bar (151) protrudes toward the side of the swing bar (151) closer to the wire.