Six-split suspension clamp

Abstract

A six-split suspension clamp disclosed by the present invention comprises a clamp body and an external circular ring frame, the outer side of the clamp body is provided with a plurality of first clamp half grooves, and the inner side of the external circular ring frame is provided with a plurality of second clamp half grooves which are matched with the plurality of first clamp half grooves one by one in number and position. The first wire clamp half groove is provided with a locking mechanism which pushes the first wire clamp half groove outwards along the radial direction of the wire clamp body. After the external circular ring frame is installed, the wire is ejected outwards through the locking mechanism and is clamped and fixed, a gap does not need to be reserved between the wire clamp body and the external circular ring frame, and the installation stability is good.

Description

Technical Field

[0001] This invention relates to a suspension clamp, particularly a six-split suspension clamp, belonging to the field of cable fittings technology. Background Technology

[0002] Suspension clamps are hardware used to suspend conductors onto suspension insulator strings or hardware strings. Suspending six-split conductors requires six-split suspension clamps. While existing six-split suspension clamps use a single support frame, securing the six-split conductor actually requires six clamps. Therefore, six independent clamp structures need to be designed on the outside of a single support frame to suspend the six-split conductor. When securing the conductor with these six clamps, workers need to perform six operations at height. Furthermore, the six conductors are typically hexagonally distributed in different positions, requiring workers to change their movements and directions, making the operation difficult and complex.

[0003] To address this issue, Chinese Patent Publication No. CN206135354U discloses a six-split suspension wire clamp, which includes two semi-circular shells and an inner support tube. The two shells are fixedly arranged to form an outer shell with a circular cavity in the middle. The inner support tube is circular and placed inside the circular cavity, with a gap between the inner support tube and the outer shell. Six clamping slots are provided between the inner support tube and the outer shell, and each clamping slot is equipped with a rubber pad. The clamping and fixing of the six wires can be completed by the two shells and the inner support tube, which is simple and quick to operate. However, in actual use, it was found that because the six wires are hexagonally distributed, when fixing the top two wires and the bottom two wires, the two shells do not close and fix these four wires radially. Therefore, a sufficient gap needs to be left between the shell and the inner support tube to ensure that these four wires can close and fix them diagonally, resulting in poor clamping stability. Moreover, during installation, due to the large gap between the inner and outer components and the shallow depth of the groove, the wires are very easy to come out of the groove during the installation process, making it impossible to complete the casing assembly. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a six-split suspension clamp that solves the problems of poor clamping stability and wire detachment during installation of the existing six-split suspension clamp.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A six-split suspension clamp includes a clamp body and an outer ring frame. The outer side of the clamp body is provided with a number of first clamp half-grooves. The inner side of the outer ring frame is provided with second clamp half-grooves, the number and position of which match the number of first clamp half-grooves one by one. A locking mechanism is provided on the first clamp half-grooves to push the first clamp half-grooves radially outward along the clamp body.

[0006] Furthermore, the wire clamp body includes a central part, several supporting spoke structures, an outer ring structure, and an outer annular plate. The supporting spoke structures are arranged radially along the wire clamp body. One end of the supporting spoke structure is fixedly connected to the central part, and the other end of the supporting spoke structure is fixedly connected to the outer ring structure. Several supporting spoke structures are evenly distributed along the circumferential direction of the wire clamp body. The outer diameter of the outer ring structure matches the inner diameter of the outer ring frame. The first wire clamp half-groove is arranged on the outer side of the outer ring structure. The inner side of the outer annular plate is fixed to the outer circumferential surface of the outer ring structure and is located at the edge of one end of the outer circumferential surface.

[0007] Furthermore, the outer ring frame includes a first ring frame and a second ring frame, with one end of the first ring frame and the second ring frame hinged together, and the other end of the first ring frame and the other end of the second ring frame having interlocking stepped surfaces. The stepped surfaces of the first ring frame and the second ring frame are locked together by bolts.

[0008] Furthermore, a pin is provided on the outer side of the clamp body, and a pin hole matching the outer pin of the clamp body is opened on the inner wall of the outer ring frame.

[0009] Furthermore, insulating pads are respectively provided in the first clamp half-groove and the second clamp half-groove.

[0010] Furthermore, the locking mechanism includes a slider, a sliding rod, a first wedge block, a frustum top block, a threaded post, and a hexagonal nut. A slider groove is provided along the radial direction of the wire clamp body on its outer edge. The slider is slidably disposed within the slider groove and can slide radially along the wire clamp body. A first wire clamp half-groove is located on the side of the slider facing the outer side of the wire clamp body. One end of the sliding rod is fixedly connected to the side of the slider away from the outer side of the wire clamp body. The sliding rod slides radially within the wire clamp body. The first wedge block is fixed to the other end of the sliding rod and engages with the outer conical surface of the frustum top block. The frustum top block is fixed to one end of the threaded post. A through hole matching the threaded post is opened on one side of the center of the wire clamp body, and an internal thread is provided on the inner wall of the through hole. The threaded post is disposed within the through hole and threadedly connected to the through hole. The hexagonal nut is fixed to the other end of the threaded post.

[0011] Furthermore, the other end of the threaded post is provided with an anti-loosening mechanism, which includes a pin, a pin sleeve, and multiple anti-loosening posts. The multiple anti-loosening posts are distributed in a circle along the circumferential direction of the other end face of the threaded post on the outer side of the other end face. The pin is slidably disposed in the pin sleeve along the radial direction of the end face of the threaded post. The pin sleeve is fixed on the clamp body. The end of the pin facing the anti-loosening post is a conical surface. Two limiting rings are provided on the pin, and the two limiting rings are respectively located at both ends of the pin sleeve. An elastic locking piece is also provided on the outer side of the pin.

[0012] Furthermore, the outer annular plate has several U-shaped guide grooves on its outer side. The U-shaped guide grooves are arranged radially along the outer annular plate. The number and position of the U-shaped guide grooves correspond one-to-one with the first wire clamp half groove on the outer side of the wire clamp body. One end of the U-shaped guide groove is located at the outer edge of the outer annular plate, and the other end of the U-shaped guide groove coincides with the first wire clamp half groove.

[0013] Furthermore, a wire locking mechanism is provided in the U-shaped guide groove. The wire locking mechanism includes a first locking block, a second locking block, a first locking spring, and a second locking spring. One end of the first locking block and one end of the second locking block are hinged together. One end of the first locking spring and one end of the second locking spring are fixed to the wire clamp body. The other end of the first locking spring is connected to the first locking block, and the other end of the second locking spring is connected to the second locking block.

[0014] Furthermore, the first locking block and the second locking block include a locking block head and a locking block arc-shaped rod. One side of the locking block head is an inclined guide surface, and the other side of the locking block head is an arc shape that matches the diameter of the wire. One end of the locking block arc-shaped rod is fixedly connected to the locking block head. The first locking block and the second locking block are symmetrically arranged on both sides of the U-shaped guide groove.

[0015] Compared with the prior art, the present invention has the following advantages and effects: 1. This invention provides a six-split suspension clamp. When the outer ring frame is installed, the wire can slide radially inward in the first clamp half groove. In this way, the outer ring frame will not be interfered with by the wire during installation. After the outer ring frame is installed, the wire is pushed outward by the locking mechanism to complete the clamping and fixing of the wire. There is no need to leave a gap between the clamp body and the outer ring frame, and the installation is stable. 2. The present invention, through the design of the pin structure, ensures that the positions of the first wire clamp half slot and the second wire clamp half slot are aligned neatly when the outer ring frame is installed, thus ensuring smooth installation. 3. Through the structural design of the locking mechanism, the present invention allows for the installation and fixing of all six split wires with only one locking operation during installation and fixing, resulting in high operational efficiency. Furthermore, the operation position is located at the center of the wire clamp, making operation convenient. 4. The present invention prevents the wire clamp from loosening later by designing an anti-loosening mechanism, thus ensuring the stability of the wire clamp for long-term use. 5. The present invention adopts a wire locking mechanism, which pre-limits the wire in the U-shaped guide groove during installation to prevent the external ring frame from coming loose from the half groove of the wire clamp body during installation. It is easy to operate and does not require repeated adjustments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a six-split suspension clamp according to the present invention.

[0017] Figure 2 This is a schematic diagram of the wire clamp body of the present invention.

[0018] Figure 3 This is a schematic diagram of the outer ring frame of the present invention.

[0019] Figure 4 This is a schematic diagram of the locking mechanism of the present invention.

[0020] Figure 5 This is a schematic diagram of the anti-loosening mechanism of the present invention.

[0021] Figure 6 This is a reverse schematic diagram of the wire clamp body of the present invention.

[0022] Figure 7 This is a schematic diagram of the wire locking mechanism of the present invention. Detailed Implementation

[0023] To illustrate in detail the technical solutions adopted by the present invention to achieve the intended technical objectives, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Furthermore, the technical means or technical features in the embodiments of the present invention can be replaced without creative effort. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1 As shown, a six-split suspension clamp of the present invention includes a clamp body 1 and an outer ring frame 2. The outer side of the clamp body 1 is provided with a plurality of first clamp half-grooves 3. The inner side of the outer ring frame 2 is provided with second clamp half-grooves 4, the number and position of which match the plurality of first clamp half-grooves 2. A locking mechanism is provided on the first clamp half-grooves 3 to push the first clamp half-grooves 3 radially outward along the clamp body 1.

[0025] like Figure 2As shown, the wire clamp body 1 includes a central portion 5, several supporting spoke structures 6, an outer ring structure 7, and an outer annular plate 8. The supporting spoke structures 6 are arranged radially along the wire clamp body 1. One end of the supporting spoke structure 6 is fixedly connected to the central portion 5, and the other end of the supporting spoke structure 6 is fixedly connected to the outer ring structure 7. The several supporting spoke structures 6 are evenly distributed along the circumference of the wire clamp body 1. The outer diameter of the outer ring structure 7 matches the inner diameter of the outer ring frame 2. The first wire clamp half-groove 3 is provided on the outer surface of the outer ring structure 7. The inner side of the outer annular plate 8 is fixed to the outer circumferential surface of the outer ring structure 7 and is located at the edge of one end of the outer circumferential surface. During installation, the outer ring frame 2 is installed on the outside of the outer ring structure 7, and one end face of the outer ring frame 2 contacts the outer annular plate 8.

[0026] The outer ring frame 2 includes a first ring frame 9 and a second ring frame 10. One end of the first ring frame 9 and the second ring frame 10 are hinged together, and the other end of the first ring frame 9 and the other end of the second ring frame 10 are provided with interlocking stepped surfaces. The stepped surfaces of the first ring frame 9 and the second ring frame 10 are locked together by bolts.

[0027] like Figure 2 As shown, a pin 11 is provided on the outer side of the clamp body 1, and a pin hole matching the pin 11 is opened on the inner wall of the outer ring frame 2. The pin 11 is located at the upper end of the clamp body 1. During installation, the outer ring frame 2 is inserted into the pin 11 at the upper end of the clamp body 1 through the pin hole, so that the positions of the second clamp half-groove 4 on the outer ring frame 2 and the first clamp half-groove 3 on the clamp body 1 are completely aligned, thus completing the installation and positioning of the outer ring frame 2 and the clamp body 1. Then, the first ring frame 9 and the second ring frame 10 of the outer ring frame 2 are rotated together along the hinge axis, and the stepped surfaces at the other ends of the first ring frame 9 and the second ring frame 10 are engaged. Finally, the stepped surfaces at the other ends of the first ring frame 9 and the second ring frame 10 are locked and fixed by bolts.

[0028] Insulating pads are respectively provided in the first clamp half-groove 3 and the second clamp half-groove 4.

[0029] like Figure 2 and Figure 4As shown, the locking mechanism includes a slider 12, a sliding rod 13, a first wedge block 14, a frustum top block 15, a threaded post 16, and a hexagonal nut 17. A slider groove 18 is provided along the radial direction of the wire clamp body 1 on its outer edge. The slider 12 is slidably disposed within the slider groove 18 and can slide radially along the wire clamp body 1. A first wire clamp half-groove 3 is formed on the side of the slider 12 facing the outer side of the wire clamp body 1. One end of the sliding rod 13 is fixedly connected to the side of the slider 12 away from the outer side of the wire clamp body 1. The sliding rod 13 is slidably disposed inside the clamp body 1 along the radial direction of the clamp body 1. The first wedge block 14 is fixed to the other end of the sliding rod 13 and the first wedge block 14 meshes with the outer conical surface of the frustum top block 15. The frustum top block 15 is fixed to one end of the threaded post 16. A through hole matching the threaded post 16 is opened on one side of the center of the clamp body 1 and an internal thread is provided on the inner wall of the through hole. The threaded post 16 is disposed in the through hole and threadedly connected to the through hole. The hexagonal nut 17 is fixed to the other end of the threaded post 16. In the initial state, the truncated cone top block 15 is close to the upper surface of the clamp body 1. At this time, the first wedge block 14 can slide the maximum distance toward the center of the clamp body 1, that is, the first clamp half groove 3 on the slider 12 is in a state of no force. When the outer ring frame 2 is installed and touches the wire, since the first clamp half groove 3 is in a state of no force, the wire is squeezed by the outer ring frame 2 and slides and contracts along the slider groove 18 toward the inner side of the clamp body 1 as the first clamp half groove 3 slides. This makes the installation of the outer ring frame 2 not interfered with by the wire, and there is no need to leave a large gap between the outer shell and the support tube as in the prior art. The first clamp half groove 3 and the second clamp half groove 4 of the present invention can form a complete ring structure in the clamping state, and the clamping effect is more stable.

[0030] When in use, after the outer ring frame 2 is installed, the hexagonal nut 17 is rotated with a tool. The hexagonal nut 17 drives the threaded post 16 to rotate along the internal thread of the through hole and gradually move into the inside of the clamp body 1. The frustum top block 15 moves inward in sync with the threaded post 16. During the movement, the outer conical surface of the frustum top block 15 presses against the wedge surface of the first wedge block 14, thereby pushing the first wedge block 14 radially outward along the clamp body 1. The first wedge block 14 drives the slider 12 to move outward along the slider groove 18 through the slide rod 13, so that the first clamp half groove 3 gradually drives the wire to move and close towards the second clamp half groove 4 of the outer ring frame 2, and finally completes the clamping and fixing of the wire.

[0031] The other end of the threaded post 16 is provided with an anti-loosening mechanism, which includes a pin 19, a pin sleeve 20 and multiple anti-loosening posts 21. The multiple anti-loosening posts 21 are distributed in a circle along the circumferential direction of the other end face of the threaded post 16 on the outer side of the other end face. The pin 19 is slidably disposed in the pin sleeve 20 along the radial direction of the end face of the threaded post 16. The pin sleeve 20 is fixed on the clamp body 1. The end of the pin 19 facing the anti-loosening post 21 is a conical surface. Two limiting rings 22 are provided on the pin 19 and the two limiting rings 22 are respectively located at both ends of the pin sleeve 20. The two limiting rings 22 limit the distance that the pin 19 slides back and forth in the pin sleeve 20 and prevent the pin 19 from slipping out of the pin sleeve 20. An elastic locking piece 23 is also provided on the outer side of the pin 19. The elastic locking piece 23 is inclined on the outer side of the pin 19, and the end of the elastic locking piece 23 near the anti-loosening post 21 is fixed to the outer side of the pin 19. Several elastic locking pieces 23 are evenly distributed along the circumference of the pin 19 to form an umbrella-shaped structure. In use, after the threaded post 16 is rotated into place, the pin 19 is pushed towards the anti-loosening post 21, so that the conical surface at the end of the pin 19 is locked between two adjacent anti-loosening posts 21 to prevent the threaded post 16 from loosening. When the pin 19 slides into place, the elastic locking piece 23 is dislodged from the pin sleeve 20. At this time, the elastic locking piece 23 is stretched outward under its own elastic force to form an umbrella-shaped structure, preventing the pin 19 from sliding in the opposite direction, thus completing the limiting and fixing of the entire anti-loosening mechanism.

[0032] like Figure 6 As shown, several U-shaped guide grooves 24 are formed on the outer side of the outer annular plate 8. The U-shaped guide grooves 24 are arranged radially along the outer annular plate 8. The number and position of the U-shaped guide grooves 24 correspond one-to-one with the first wire clamp half-groove 3 on the outer side of the wire clamp body 1. One end of the U-shaped guide groove 24 is located at the outer edge of the outer annular plate 8, and the other end of the U-shaped guide groove 24 coincides with the first wire clamp half-groove 3. The wire can be guided into the first wire clamp half-groove 3 through the U-shaped guide grooves 24.

[0033] A wire locking mechanism is provided inside the U-shaped guide groove 24, such as Figure 7 As shown, the wire locking mechanism includes a first locking block 25, a second locking block 26, a first locking spring 27, and a second locking spring 28. One end of the first locking block 25 and one end of the second locking block 26 are hinged together. One end of the first locking spring 27 and one end of the second locking spring 28 are fixed to the wire clamp body 1. The other end of the first locking spring 27 is connected to the first locking block 25, and the other end of the second locking spring 28 is connected to the second locking block 26.

[0034] The first locking block 25 and the second locking block 26 each include a locking block head and a locking block arc-shaped rod. One side of the locking block head is an inclined guide surface, and the other side is an arc shape matching the diameter of the wire. One end of the locking block arc-shaped rod is fixedly connected to the locking block head. The first and second locking blocks are symmetrically arranged on both sides of the U-shaped guide groove. In use, the wire slides along the U-shaped guide groove 24 towards the inside of the wire clamp body 1 into the first wire clamp half-groove 3. During the sliding process of the wire in the U-shaped guide groove 24, the inner side of the wire contacts the inclined guide surfaces of the first locking block 25 and the second locking block 26 of the wire locking mechanism located outside the U-shaped guide groove 24. As the wire continues to slide inward, the first locking block 25 and the second locking block 26 are pushed apart by the wire through the inclined guide surfaces. At the same time, the first locking spring 27 and the second locking spring 28 are stretched and stored energy. When the wire completely pushes apart the first locking block 25 and the second locking block 26... After sliding into the first wire clamp half-groove 3, the wire no longer exerts pressure on the first locking block 25 and the second locking block 26 to both sides. Under the action of the first locking spring 27 and the second locking spring 28, the first locking block 25 and the second locking block 26 retract towards the middle and close together, locking the wire in place in the first wire clamp half-groove 3. Since the first locking block 25 and the second locking block 26 face the wire with their arc-shaped edges, it is difficult for the wire to push the first locking block 25 and the second locking block 26 apart to the outside, thus preventing the wire from coming out of the first wire clamp half-groove 3 during the installation of the suspension clamp.

[0035] This invention provides a six-split suspension clamp. During installation of the outer ring frame, the conductor can slide radially inward within the first clamp's semi-groove. This prevents interference from the conductor during the installation of the outer ring frame. After installation, a locking mechanism pushes the conductor outward and secures it. No gap is required between the clamp body and the outer ring frame, ensuring excellent installation stability. Furthermore, the pin structure design ensures that the positions of the first and second clamp semi-grooves correspond precisely during the installation of the outer ring frame. This invention ensures smooth installation. Through its locking mechanism design, the clamp only requires a single locking operation to complete the installation and fixation of all six split wires, resulting in high operational efficiency. The operation position is located at the center of the clamp, making operation convenient. Furthermore, the anti-loosening mechanism prevents the clamp from loosening later, ensuring its long-term stability. The wire locking mechanism pre-limits the wires within the U-shaped guide groove during installation, preventing the external ring frame from loosening from the clamp body's semi-groove during installation. This facilitates operation and eliminates the need for repeated adjustments.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present invention, based on the technical essence of the present invention and within the spirit and principles of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A six-split suspension clamp, characterized in that: It includes a wire clamp body and an outer ring frame. The outer side of the wire clamp body is provided with several first wire clamp half slots. The inner side of the outer ring frame is provided with second wire clamp half slots, the number and position of which match the number of first wire clamp half slots one by one. The first wire clamp half slots are provided with a locking mechanism that pushes the first wire clamp half slots radially outward along the wire clamp body.

2. A six-split suspension clamp according to claim 1, characterized in that: The wire clamp body includes a central part, several supporting spoke structures, an outer ring structure, and an outer annular plate. The supporting spoke structures are arranged radially along the wire clamp body. One end of the supporting spoke structure is fixedly connected to the central part, and the other end of the supporting spoke structure is fixedly connected to the outer ring structure. Several supporting spoke structures are evenly distributed along the circumference of the wire clamp body. The outer diameter of the outer ring structure matches the inner diameter of the outer ring frame. The first wire clamp half-groove is arranged on the outer surface of the outer ring structure. The inner side of the outer annular plate is fixed to the outer circumferential surface of the outer ring structure and is located at the edge of one end of the outer circumferential surface.

3. A six-split suspension clamp according to claim 1, characterized in that: The outer ring frame includes a first ring frame and a second ring frame. One end of the first ring frame and the second ring frame are hinged together, and the other end of the first ring frame and the other end of the second ring frame are provided with interlocking stepped surfaces. The stepped surfaces of the first ring frame and the second ring frame are locked together by bolts.

4. A six-split suspension clamp according to claim 1, characterized in that: A pin is provided on the outer side of the clamp body, and a pin hole matching the outer pin of the clamp body is opened on the inner wall of the outer ring frame.

5. A six-split suspension clamp according to claim 1, characterized in that: An insulating pad layer is provided in the first clamp half-groove and the second clamp half-groove, respectively.

6. A six-split suspension clamp according to claim 1, characterized in that: The locking mechanism includes a slider, a sliding rod, a first wedge block, a frustum top block, a threaded post, and a hexagonal nut. A slider groove is provided along the radial direction of the wire clamp body on its outer edge. The slider is slidably disposed within the slider groove and can slide radially along the wire clamp body. A first wire clamp half-groove is located on the side of the slider facing the outer side of the wire clamp body. One end of the sliding rod is fixedly connected to the side of the slider away from the outer side of the wire clamp body. The sliding rod slides radially within the wire clamp body. The first wedge block is fixed to the other end of the sliding rod and engages with the outer conical surface of the frustum top block. The frustum top block is fixed to one end of the threaded post. A through hole matching the threaded post is opened on one side of the center of the wire clamp body, and an internal thread is provided on the inner wall of the through hole. The threaded post is disposed within the through hole and threadedly connected to the through hole. The hexagonal nut is fixed to the other end of the threaded post.

7. A six-split suspension clamp according to claim 6, characterized in that: The other end of the threaded post is provided with an anti-loosening mechanism, which includes a pin, a pin sleeve and multiple anti-loosening posts. The multiple anti-loosening posts are distributed in a circle along the circumferential direction of the other end face of the threaded post on the outside of the other end face. The pin is slidably disposed in the pin sleeve along the radial direction of the end face of the threaded post. The pin sleeve is fixed on the clamp body. The end of the pin facing the anti-loosening post is a conical surface. Two limiting rings are provided on the pin and the two limiting rings are located at both ends of the pin sleeve. An elastic locking piece is also provided on the outside of the pin.

8. A six-split suspension clamp according to claim 2, characterized in that: The outer annular plate has several U-shaped guide grooves on its outer side. The U-shaped guide grooves are arranged radially along the outer annular plate. The number and position of the U-shaped guide grooves correspond one-to-one with the first wire clamp half groove on the outer side of the wire clamp body. One end of the U-shaped guide groove is located at the outer edge of the outer annular plate, and the other end of the U-shaped guide groove coincides with the first wire clamp half groove.

9. A six-split suspension clamp according to claim 8, characterized in that: The U-shaped guide groove is provided with a wire locking mechanism, which includes a first locking block, a second locking block, a first locking spring, and a second locking spring. One end of the first locking block and one end of the second locking block are hinged together. One end of the first locking spring and one end of the second locking spring are fixed to the wire clamp body. The other end of the first locking spring is connected to the first locking block, and the other end of the second locking spring is connected to the second locking block.

10. A six-split suspension clamp according to claim 9, characterized in that: The first locking block and the second locking block each include a locking block head and a locking block arc-shaped rod. One side of the locking block head is an inclined guide surface, and the other side of the locking block head is an arc shape that matches the diameter of the wire. One end of the locking block arc-shaped rod is fixedly connected to the locking block head. The first locking block and the second locking block are symmetrically arranged on both sides of the U-shaped guide groove.

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