Double-wedge strain clamp

Abstract

The invention relates to a double-wedge strain clamp, and relates to the technical field of electric power fittings, the double-wedge strain clamp is characterized in that a mounting groove is arranged in a shell, the mounting groove is provided with a first inclined surface and a second inclined surface which are opposite, and a clamping mechanism and a fastening mechanism are arranged in the groove. The clamping mechanism comprises a first wedge-shaped block which is connected with the shell and of which the inclined surface is propped against the first inclined surface, and a clamping block which is connected with the shell and is matched with the first wedge-shaped block to clamp the cable; the fastening mechanism comprises a second wedge-shaped block which is connected with the shell, an inclined surface of the second wedge-shaped block abuts against the second inclined surface, and a horizontal surface of the second wedge-shaped block abuts against the clamping block; and the adjusting assembly is used for adjusting the displacement length of the inclined surface of the second wedge-shaped block on the second inclined surface so as to adjust the force applied to the clamping block. According to the strain clamp, the cable can be effectively clamped, the gripping force on the cable can be conveniently adjusted, and the gripping force of the strain clamp on the cable can be guaranteed after installation is completed.

Description

Technical Field

[0001] The present application relates to the technical field of electric power fittings, and in particular to a double-wedge tension clamp. Background Art

[0002] Strain clamps are used to fix cables or ground wires to the tension insulator strings of non-linear pole towers, acting as anchors or as hardware for fixing the guy wires of guyed pole towers. Strain clamps are divided into bolt-type tension clamps and wedge-type tension clamps. Wedge-type clamps can be used for pulling wires, especially for tightening and fixing the steel strands of utility poles.

[0003] In related technologies, patent [CN222735766U] discloses a wedge-shaped wire clamp, which relates to the technical field of power appliances and includes: a wire clamp body; a traction mechanism, disposed within the wire clamp body, for pulling a rope, the traction mechanism including a displacement component, a movable tooth plate, and a positioning tooth plate, the positioning tooth plate being fixedly connected to the bottom of the wire clamp body, the displacement component being disposed at the top of the wire clamp body, and the movable tooth plate being disposed on the displacement component; and a clamping mechanism, disposed within the wire clamp body. When in use, the cable needs to be passed through the traction mechanism and the clamping mechanism in sequence. When the cable is pulled by an external force and slides, the clamping plates in the clamping mechanism clamp both sides of the cable to ensure that the cable does not loosen.

[0004] Regarding the above-mentioned related technologies, during the installation process of the tension clamp, it is difficult to determine whether the gripping force of the clamp on the cable meets the standard. If the gripping force does not meet the standard, it is easy to cause the cable and the clamp to slip during use. In addition, after the installation is completed, it is impossible to directly increase the gripping force of the tension clamp on the cable, which affects the stability and safety of power transmission. Summary of the Invention

[0005] In order to improve the gripping force of the tension clamp on the cable, the present application provides a double-wedge tension clamp.

[0006] A double-wedge tension clamp comprises a housing, a mounting groove is provided in the housing, a first inclined surface and a second inclined surface are provided in the mounting groove, the first inclined surface and the second inclined surface are arranged opposite to each other, and a clamping mechanism and a fastening mechanism are provided in the mounting groove; The clamping mechanism includes: a first wedge-shaped block connected to the housing, wherein the inclined surface of the first wedge-shaped block abuts against the first inclined surface; A clamping block connected to the housing, the clamping block cooperates with the first wedge block to clamp the cable; The fastening mechanism includes: A second wedge block is connected to the housing, the inclined surface of the second wedge block abuts against the second inclined surface, and the horizontal surface of the second wedge block abuts against the clamping block; The adjusting component is used to adjust the displacement length of the inclined surface of the second wedge block on the second inclined surface, thereby adjusting the magnitude of the force applied by the second wedge block to the clamping block.

[0007] By adopting the above technical solution, a mounting groove, a first inclined surface and a second inclined surface are provided in the shell, which cooperate with the clamping mechanism and the fastening mechanism to achieve clamping of the cable; the first wedge block contacts the first inclined surface, and the clamping block cooperates with the first wedge block to stably clamp the cable; the second wedge block contacts the second inclined surface and the horizontal surface contacts the clamping block, and the displacement length of the second wedge block is adjusted by the adjustment component, so that the force applied to the clamping block can be adjusted, thereby improving the grip on the cable.

[0008] Optionally, the adjustment assembly includes a rotating block, the rotating block abuts against the surface of the shell, and the rotating block is provided with an adjustment rod, which extends into the second wedge block and is threadedly connected to the second wedge block.

[0009] By adopting the above technical solution, the rotating block and the adjusting rod are threadedly connected to the second wedge block. The displacement length of the inclined surface of the second wedge block on the second inclined surface is adjusted by rotation, thereby adjusting the force applied by the second wedge block to the clamping block, thereby achieving adjustment of the cable clamping force. In addition, the threaded connection between the adjusting rod and the second wedge block effectively prevents loosening between the adjusting rod and the second wedge block, effectively maintaining the displacement stability of the second wedge block.

[0010] Optionally, a clearance groove is opened in the shell, the clearance groove is connected to the installation groove, and the screw passes through the clearance groove and extends into the second wedge-shaped block.

[0011] By adopting the above technical solution, a clearance slot is provided in the housing, communicating with the mounting slot. This allows a screw to pass through the clearance slot and extend into the second wedge-shaped block, facilitating adjustment of the second wedge-shaped block's position within the mounting slot, and thereby adjusting the force exerted on the clamping block to improve the cable grip. This also provides space for the adjustment rod and the second wedge-shaped block to slide.

[0012] Optionally, the adjusting rod sleeve is provided with a gasket, which is located between the rotating block and the surface of the shell, and the gasket is slidably connected to the shell.

[0013] By adopting the above technical solution, when adjusting the position of the second wedge block, the adjusting rod pushes the gasket to slide in the sliding groove of the outer shell toward the side close to the cable, and the adjusting rod extends into the give way groove to adapt to the change in the position of the second wedge block. At the same time, the gasket can be made of rubber material, which can effectively reduce the wear between the rotating block and the outer shell.

[0014] Optionally, the second wedge-shaped block is provided with a retaining groove, and the cross section of the retaining groove is polygonal.

[0015] By adopting the above technical solution, when adjusting the position of the second wedge block, a polygonal stop rod that matches its own shape can be inserted into the stop groove. By holding the stop rod and applying a torque opposite to the rotating block to the stop rod, the operation is facilitated and the wear between the surface of the second wedge block and the inner wall of the installation groove can be reduced.

[0016] Optionally, an adjustment slot is provided in the second wedge block, and the adjustment rod extends into the adjustment slot and abuts against the inner wall of the adjustment slot; a bimetallic strip is rotatably provided at the end of the adjustment rod, and the bimetallic strip passes through the adjustment slot and extends into the stop slot, and a fixing plate is provided in the stop slot, and the bimetallic strip is connected to the fixing plate; the expansion coefficient of the bimetallic strip matches the expansion coefficient of the cable.

[0017] By adopting the above technical solution, the adjusting rod extends into the adjusting groove and abuts against it, preventing the adjusting rod from retreating. At the same time, the bimetallic strip is connected to the fixed plate and the expansion coefficient matches that of the cable. When the cable shrinks or expands due to temperature changes, the second wedge block can slide accordingly to avoid damage to the cable due to excessive gripping force or to fill the shrinkage gap. This can effectively improve the environmental adaptability of the tension clamp, thereby ensuring the gripping force of the tension clamp on the cable.

[0018] Optionally, the housing is provided with a pre-assembled part made of plastic material, the second wedge block is provided with a pre-assembled hole, and the pre-assembled part extends into the pre-assembled hole; when the adjusting component acts on the second wedge block, the pre-assembled part breaks.

[0019] By adopting the above technical solution, the second wedge block can be preliminarily fixed in the housing when the cable is not installed. When the position of the second wedge block is adjusted, if the pre-installed part breaks, it indicates that the grip force on the cable meets the relevant standards, which is convenient for staff to judge.

[0020] Optionally, a plurality of first positioning blocks are provided on the first wedge block, and a plurality of second positioning blocks are provided on the clamping block. The first positioning block extends between two adjacent second positioning blocks, and the side walls of the first positioning block abut against the side walls of the second positioning block.

[0021] By adopting the above technical solution, the first wedge block is provided with a first positioning block, the clamping block is provided with a second positioning block, and the first positioning block extends between adjacent second positioning blocks and abuts against the side walls, so that the first wedge block and the clamping block can only approach or move away from each other to avoid misalignment.

[0022] Optionally, an observation window is provided on the housing, the clamping block and the cable are located within the projection of the observation window, a scale is provided on the clamping block, and the side wall of the observation window cooperates with the scale of the clamping block to observe the displacement of the cable.

[0023] By adopting the above technical solution, an observation window is opened through which the cables can be observed. By marking the cables within the projection of the observation window, the slippage of the entire cable can be judged based on the cable slippage at the observation window.

[0024] Optional installation methods include: S1 Cable pre-installation: Place the cable between the first clamping groove of the first wedge block and the second clamping groove of the clamping block, so that the inclined surface of the first wedge block contacts the first inclined surface of the installation groove; Pull the cable manually or with a tool so that the first wedge block and the clamping block initially clamp the cable; S2 grip adjustment: rotate the adjustment rod to drive the second wedge block to slide along the second inclined surface until the pre-assembled part on the second wedge block breaks; S3 Grip Verification: Mark the initial position of the cable through the viewing window of the housing.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By adjusting the displacement length of the second wedge block on the second inclined surface through the adjustment component, the force applied to the clamping block can be adjusted, thereby improving the grip of the tension clamp on the cable; 2. The plastic pre-assembled component breaks when adjusting the position of the second wedge block, indicating that the gripping force applied to the cable meets the relevant standards. This solves the problem of difficulty in ensuring gripping force meets the standards during installation. 3. The cable displacement length can be observed through the observation window to judge the slippage of the entire cable, so as to timely detect cable loosening problems and ensure the stability and safety of power transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a schematic cross-sectional view of the structure of Example 1 of the present application, mainly showing the first and second relief grooves; Figure 3 This is a schematic diagram of the explosion structure of Example 1 of the present application; Figure 4 This is a schematic diagram of the overall structure of Example 2 of the present application; Figure 5 It is a schematic cross-sectional structural diagram of Example 3 of the present application, which mainly embodies the bimetallic strip.

[0027] Description of the drawings: 1. Housing; 2. Clamping mechanism; 201. First wedge block; 202. Clamping block; 3. Fastening mechanism; 301. Second wedge block; 302. Adjusting rod; 303. Rotating block; 304. Gasket; 305. Bimetallic strip; 306. Fixing plate; 4. Mounting ring; 5. Connecting assembly; 6. Mounting groove; 7. First inclined plane; 8. Second inclined plane; 9. First wire clamping groove; 10. First anti-sliding block; 11. Retraction groove; 12. Limiting hole; 13. Second wire clamping groove; 14. Second anti-sliding block; 15. First clearance groove; 16. Second clearance groove; 17. Threaded groove; 18. Sliding groove; 19. Stop groove; 20. Pre-assembled part; 21. Pre-assembled hole; 22. Observation window; 23. First positioning block; 24. Second positioning block; 25. Groove; 26. Adjusting groove; 27. Snap-in block; 28. Mounting plate. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 -Attached Figure 5 , further details of this application are given.

[0029] Example 1: A double wedge tension clamp, refer to Figure 1 , comprising a housing 1, in which a clamping mechanism 2 and a fastening mechanism 3 are arranged. The clamping mechanism 2 is used to clamp the cable, and the fastening mechanism 3 is used to increase the force of the clamping mechanism 2 to clamp the cable.

[0030] The upper end face of the housing 1 is fixedly connected to a mounting ring 4, and a connecting assembly 5 is rotatably connected to the housing 1. The mounting ring 4 is used to pass bolts and connect to another housing 1. The connecting assembly 5 is connected to the pole via bolts, thereby fixing the housing 1 to the pole.

[0031] Reference Figure 2 A mounting groove 6 is provided in the housing 1, the top surface of the mounting groove 6 is set as a first inclined surface 7, and the bottom surface is set as a second inclined surface 8, and the inclination directions of the first inclined surface 7 and the second inclined surface 8 are opposite. In addition, the first inclined surface 7 and the second inclined surface 8 cooperate to form two openings, large and small.

[0032] Reference Figure 1 、 Figure 2 、 Figure 3The clamping mechanism 2 includes a first wedge block 201 inserted into the mounting slot 6, and the first wedge block 201 extends into the housing 1 from the large opening of the housing 1. At the same time, the inclined surface of the first wedge block 201 abuts the first inclined surface 7, and the inclinations of the two match. In addition, the side of the first wedge block 201 away from the first inclined surface 7 is set as a horizontal surface, and a first wire clamping groove 9 with an arc-shaped cross-section is opened on this surface. The inner wall of the first wire clamping groove 9 is fixedly connected to a plurality of arc-shaped first anti-slip blocks 10, which can effectively increase the roughness of the inner wall of the first wire clamping groove 9, thereby increasing its friction coefficient. At the same time, the arc-shaped first anti-slip blocks 10 increase the contact area with the cable surface. In addition, a backstop groove 11 is provided on the side of the first wedge block 201, and a limiting hole 12 is provided on the side wall of the shell 1. The limiting rod passes through the limiting hole 12 and extends into the backstop groove 11 and abuts against the bottom of the backstop groove 11, so that the first wedge block 201 can be initially fixed to the shell 1 when not installed to prevent the first wedge block 201 from slipping out of the shell 1.

[0033] A clamping block 202 is inserted into the mounting slot 6, and both the upper and lower sides of the clamping block 202 are horizontal surfaces. Furthermore, a second wire clamping groove 13 is provided on the side of the clamping block 202 near the first wedge block 201. Several arcuate second anti-slip blocks 14 are fixedly connected to the inner wall of the second wire clamping groove 13. This effectively increases the roughness of the inner wall of the second wire clamping groove 13, thereby increasing its friction coefficient. At the same time, the arcuate second anti-slip blocks 14 increase the contact area with the cable surface. The second wire clamping groove 13 of the clamping block 202 cooperates with the first wire clamping groove 9 of the first wedge block 201 to clamp both sides of the cable.

[0034] The fastening mechanism 3 includes a second wedge block 301 inserted into the mounting slot 6. The second wedge block 301 extends into the housing 1 through the large opening of the housing 1. The inclined surface of the second wedge block 301 abuts the second inclined surface 8, and the inclinations of the two match. Furthermore, the side of the second wedge block 301 near the clamping block 202 is configured as a horizontal surface. This horizontal surface of the second wedge block 301 abuts the clamping block 202, thereby increasing the gripping force exerted on the cable between the first wedge block 201 and the clamping block 202. Furthermore, a first clearance groove 15 is defined within the housing 1 and communicates with the mounting slot 6. A second clearance groove 16 is defined on the second wedge block 301 and communicates with the mounting slot 6. A threaded groove 17 is defined at the bottom of the second clearance groove 16.

[0035] An adjustment rod 302 is threaded through the threaded groove 17 and is threadedly connected to the inner wall of the threaded groove 17. This threaded connection between the adjustment rod 302 and the inner wall of the threaded groove 17 of the second wedge block 301 effectively prevents loosening between the adjustment rod 302 and the second wedge block 301, effectively maintaining the displacement stability of the second wedge block 301. One end of the adjustment rod 302 is sequentially threaded through the second clearance groove 16, the first clearance groove 15, and the small opening, extending outside the housing 1. The end of the adjustment rod 302 outside the housing 1 is fixedly connected to a rotating block 303. Furthermore, two opposing inner walls of the housing 1 at the small opening are provided with sliding grooves 18. A gasket 304 is slidably connected to the inner wall of the sliding groove 18 and is sleeved onto the adjustment rod 302. Simultaneously, the rotating block 303 contacts the housing 1 via the gasket 304. The gasket 304 can be made of rubber, effectively reducing wear between the rotating block 303 and the housing 1. When the force applied by the second wedge block 301 to the cable needs to be adjusted, the screw can be turned to thread the inner wall of the threaded groove 17 of the second wedge block 301 into engagement with the adjusting rod 302. Since the rotating block 303 contacts the housing 1 via the washer 304, the adjusting rod 302 cannot move. This allows the bottom of the threaded groove 17 of the second wedge block 301 to slide toward the adjusting rod 302, thereby allowing the second wedge block 301 to slide along the second inclined surface 8, pushing the clamping block 202 toward the first wedge block 201, thereby increasing the force applied to the cable. Furthermore, when the second wedge block 301 slides, the adjusting rod 302 pushes the washer 304 to slide within the sliding groove 18 toward the side closest to the cable. At this point, the adjusting rod 302 extends into the first clearance groove 15, thereby adapting to the change in position of the second wedge block 301.

[0036] A stop groove 19 is provided at one end of the second wedge block 301 away from the gasket 304, and the cross-section of the stop groove 19 is hexagonal, wherein the stop groove 19 is connected to the thread groove 17 and the axes of the two coincide with each other. When adjusting the position of the second wedge block 301, a hexagonal stop rod that matches its own shape can be inserted into the stop groove 19, so that in the process of twisting the rotating block 303 and allowing the second wedge block 301 to slide, the stop rod can be gripped and a torque opposite to that of the rotating block 303 can be applied to the stop rod, which facilitates operation and reduces the wear between the surface of the second wedge block 301 and the inner wall of the mounting groove 6.

[0037] A plastic pre-assembled component 20 is inserted into the sidewall of the housing 1. A pre-assembled hole 21 is formed in the second wedge 301 and communicates with the second clearance groove 16. The pre-assembled component 20 extends into the pre-assembled hole 21. When no cable is installed, the second wedge 301 can be initially secured within the housing 1. When the position of the second wedge 301 is adjusted, the inner wall of the pre-assembled hole 21 compresses against the sidewall of the pre-assembled component 20. When the pre-assembled component 20 breaks, the gripping force applied to the cable meets relevant standards.

[0038] An observation window 22 is provided on the sidewall of the housing 1, communicating with the mounting slot 6. The clamping block 202 and the cable are both located within the projection of the observation window 22. The clamping block 202 is provided with a scale, and the sidewall of the observation window 22 aligns with the scale on the clamping block 202 to monitor cable displacement. Furthermore, the observation window 22 can be provided to mark the cable within the projection of the observation window 22, with the mark corresponding to the scale position on the clamping block 22. This allows for monitoring any slippage between the cable and the clamping block 22, allowing for a comprehensive assessment of the cable's slippage.

[0039] The operating principle of Example 1 of the present application is as follows: by rotating the adjustment rod 302, the second wedge block 301 is driven to slide along the second inclined surface 8, and the self-locking characteristics of the thread are utilized to precisely control the force applied by the second wedge block 301 to the clamping block 202. When the adjustment rod 302 is rotated clockwise, the second wedge block 301 moves toward the bottom of the installation slot 6, pushing the clamping block 202 and the first wedge block 201 to clamp the cable; counterclockwise rotation reduces the clamping force. The pre-assembled component 20 secures the position of the second wedge block 301 during initial installation. When the gripping force is adjusted to meet the required level, the pre-assembled component 20 breaks. The cable slippage can be monitored in real time through the observation window 22 to ensure dynamic and stable gripping force.

[0040] Example 2: A double wedge tension clamp, refer to Figure 4 The difference from Example 1 is that a plurality of grooves 25 are provided on the surfaces of the first wedge block 201, the clamping block 202 and the second wedge block 301, which can effectively improve the pressure resistance of the three while reducing consumables.

[0041] Two first positioning blocks 23 are fixedly connected to the outer walls of both sides of the first wedge block 201, with a gap provided between the two first positioning blocks 23, which extend toward the second wedge block 301. Furthermore, second positioning blocks 24 are provided on the outer walls of both sides of the clamping block 202, extending away from the second wedge block 301. At the same time, the second positioning blocks 24 extend into the gap between the two first positioning blocks 23, with the side walls of the first positioning blocks 23 abutting against the side walls of the second positioning blocks 24. This ensures that the first wedge block 201 and the clamping plate can only move closer to or further away from each other, thereby preventing misalignment between the first wedge block 201 and the clamping plate.

[0042] The working principle of Example 2 of this application is as follows: First wedge block 201 and clamping block 202 form a sliding rail-type limit structure through positioning blocks. First positioning block 23 fits into the gap between second positioning block 24 of clamping block 202, forming a constraint that only allows axial translation. The groove 25 design reduces material usage while enhancing structural rigidity. During sliding, the positioning blocks prevent deflection and misalignment between first wedge block 201 and clamping block 202, ensuring that the clamping surface remains parallel to the cable surface, improving clamping uniformity.

[0043] Example 3: A double wedge tension clamp, refer to Figure 5 The difference between this embodiment and Example 2 is that an adjustment groove 26 is formed at the bottom of the thread groove 17 of the second wedge block 301, and the thread groove 17 is connected to the stop groove 19 through the adjustment groove 26. The threaded protrusion on the adjustment rod 302 rotates with the threaded concave surface of the thread groove 17. When the gripping force on the cable reaches the required level, the threaded protrusion extends into the adjustment groove 26 and abuts against the inner wall of the adjustment groove 26. At the same time, the threaded protrusion abuts against the inner wall of the adjustment groove 26 near the thread groove 17, thereby preventing the adjustment rod 302 from retracting.

[0044] The end of the adjustment rod 302, away from the rotating block 303, is rotatably connected to a bimetallic strip 305 via a clamping block 27. One end of the bimetallic strip 305 is fixedly connected to a metal mounting plate 28. A fixing plate 306 is fixedly connected to the bottom of the retaining groove 19. The mounting plate 28 passes through the adjustment groove 26 and the fixing plate 306, then extends into the retaining groove 19. After the mounting plate 28 is inserted into the retaining groove 19, its ends are bent and abut against the fixing plate 306. Screws then secure the mounting plate 28, fixing plate 306, and second wedge block 301. The expansion coefficient of the bimetallic strip 305 matches that of the cable.

[0045] When the cable surface temperature decreases and the cable shrinks, the bimetallic strip 305 is bent by the heat and the fixing plate 306 is pulled to make the second wedge block 301 slide upward along the second inclined surface 8, thereby filling the gap left by the cable shrinkage; when the cable surface temperature increases and the cable expands, the bimetallic strip 305 is bent by the heat and the fixing plate 306 is pushed to make the second wedge block 301 slide downward along the second inclined surface 8, thereby avoiding excessive grip force on the cable after expansion, which may cause damage to the cable surface.

[0046] The implementation principle of Example 3 of the present application is: the bimetallic strip 305 is made of 20CrMnTi alloy, and its nonlinear deformation curve should match the expansion characteristics of the cable.

[0047] As the temperature changes, the bimetallic strip 305 deforms: during low-temperature contraction, it pulls the second wedge 301 upward to compensate for cable shrinkage. During high-temperature expansion, it pushes the second wedge 301 downward to maintain grip while preventing damage to the cable caused by excessive grip. The inner wall of the adjustment slot 26 cooperates with the threaded protrusion to self-lock the adjustment rod 302, preventing vibration-induced displacement rebound.

[0048] Example 4: A method for installing a double-wedge tension clamp comprises the following steps: The first step is cable pre-installation: the cable is placed between the first clamping groove 9 of the first wedge block 201 and the second clamping groove 13 of the clamping block 202, so that the inclined surface of the first wedge block 201 contacts the first inclined surface 7 of the installation groove 6; Pull the cable manually or with a tool so that the first wedge block 201 and the clamping block 202 initially clamp the cable; The second step is to adjust the grip force: rotate the adjustment rod 302 to drive the second wedge block 301 to slide along the second inclined surface 8 until the pre-assembled part 20 on the second wedge block 301 breaks; The third step is grip strength verification: mark the initial position of the cable through the observation window 22 of the housing 1.

[0049] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A double-wedge tension clamp, comprising a housing (1), characterized in that: The housing (1) is provided with a mounting groove (6), the mounting groove (6) is provided with a first inclined surface (7) and a second inclined surface (8), the first inclined surface (7) and the second inclined surface (8) are arranged opposite to each other, and the mounting groove (6) is provided with a clamping mechanism (2) and a fastening mechanism (3); The clamping mechanism (2) comprises: A first wedge-shaped block (201) is connected to the housing (1), and the inclined surface of the first wedge-shaped block (201) is in contact with the first inclined surface (7); A clamping block (202) connected to the housing (1), the clamping block (202) cooperates with the first wedge block (201) to clamp the cable; The fastening mechanism (3) comprises: A second wedge-shaped block (301) is connected to the housing (1), the inclined surface of the second wedge-shaped block (301) abuts against the second inclined surface (8), and the horizontal surface of the second wedge-shaped block (301) abuts against the clamping block (202); The adjustment component is used to adjust the displacement length of the inclined surface of the second wedge block (301) on the second inclined surface (8), thereby adjusting the magnitude of the force applied by the second wedge block (301) to the clamping block (202).

2. The double-wedge tension clamp according to claim 1, characterized in that: The adjustment assembly comprises a rotating block (303), the rotating block (303) abutting against the surface of the housing (1), the rotating block (303) being provided with an adjustment rod (302), the adjustment rod (302) extending into the second wedge block (301) and being threadedly connected to the second wedge block (301).

3. The double-wedge tension clamp according to claim 2, characterized in that: A clearance groove is provided in the housing (1), the clearance groove is communicated with the installation groove (6), and the screw passes through the clearance groove and extends into the second wedge block (301).

4. The double-wedge tension clamp according to claim 3, characterized in that: The adjusting rod (302) is sleeved with a gasket (304), the gasket (304) is located between the rotating block (303) and the surface of the outer shell (1), and the gasket (304) is slidably connected to the outer shell (1).

5. The double-wedge tension clamp according to claim 4, characterized in that: The second wedge-shaped block (301) is provided with a retaining groove (19), and the cross section of the retaining groove (19) is polygonal.

6. The double-wedge tension clamp according to claim 5, characterized in that: An adjustment slot (26) is provided in the second wedge-shaped block (301), and the adjustment rod (302) extends into the adjustment slot (26) and abuts against the inner wall of the adjustment slot (26); A bimetallic strip (305) is rotatably provided at the end of the adjusting rod (302), and the bimetallic strip (305) passes through the adjusting groove (26) and then extends into the retaining groove (19). A fixing plate (306) is provided in the retaining groove (19), and the bimetallic strip (305) is connected to the fixing plate (306); The expansion coefficient of the bimetallic strip (305) matches the expansion coefficient of the cable.

7. The double-wedge tension clamp according to claim 1, characterized in that: The housing (1) is provided with a pre-installed component (20) made of plastic material, and a pre-installed hole (21) is provided on the second wedge-shaped block (301), and the pre-installed component (20) extends into the pre-installed hole (21); When the adjusting assembly acts on the second wedge block (301), the preassembled part (20) breaks.

8. The double-wedge tension clamp according to claim 1, characterized in that: A plurality of first positioning blocks (23) are provided on the first wedge block (201), and a plurality of second positioning blocks (24) are provided on the clamping block (202). The first positioning block (23) extends between two adjacent second positioning blocks (24), and the side wall of the first positioning block (23) abuts against the side wall of the second positioning block (24).

9. The double-wedge tension clamp according to claim 1, characterized in that: An observation window (22) is provided on the housing (1); the clamping block (202) and the cable are located within the projection of the observation window (22); a scale is provided on the clamping block (202); and the side wall of the observation window (22) cooperates with the scale of the clamping block (202) to observe the displacement of the cable.

10. A double-wedge tension clamp according to any one of claims 1 to 9, characterized in that: The following installation methods are also included: S1 cable pre-installation: placing the cable between the first wire clamping groove (9) of the first wedge block (201) and the second wire clamping groove (13) of the clamping block (202), so that the inclined surface of the first wedge block (201) contacts the first inclined surface (7) of the installation groove (6); Pulling the cable manually or with a tool so that the first wedge block (201) and the clamping block (202) initially clamp the cable; S2 Grip adjustment: rotating the adjustment rod (302) to drive the second wedge-shaped block (301) to slide along the second inclined surface (8) until the pre-assembled part (20) on the second wedge-shaped block (301) breaks; S3 Grip verification: Mark the initial position of the cable through the observation window (22) of the housing (1).

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