Cable fixing hardware

Abstract

The present invention relates to the technical field of electric power fittings, and specifically discloses a cable fixing fitting, comprising two arc-shaped clamping plates, a straight plate mounted on each arc-shaped clamping plate, and a clamping bolt mounted between the two straight plates. The outer surface of at least one of the two arc-shaped clamping plates is formed with a reference surface and has an arc-shaped chamber inside. A detection mechanism is installed in the arc-shaped chamber, and the detection mechanism comprises: a detection member, the detection member is assembled on the upper part of the arc-shaped clamping plate so as to move up and down, the lower end of the detection member extends into the arc-shaped chamber, and the upper surface of the detection member forms a detection surface; a rolling member, the rolling member is assembled in the arc-shaped chamber; a moving plate, the moving plate is assembled in the arc-shaped chamber so as to move, the lower end of the moving plate contacts the rolling member, and can be pushed by the rolling member to move along the arc-shaped chamber, and the upper surface of the moving plate forms a transmission surface for pushing the lower end of the detection member. The cable fixing fitting can provide real-time feedback of the verticality information of the closed surface of the arc-shaped clamping plate, so as to facilitate timely adjustment and correction.

Description

Technical Field

[0001] The invention relates to the technical field of electric power fittings, and in particular to a cable fixing fitting. Background Art

[0002] Hardware is a metal accessory used to connect and combine various devices in the power system to transfer mechanical loads, electrical loads and play a certain protective role. There are many types of hardware with different uses, including but not limited to suspension clamps, tension clamps, busbar hardware, protective hardware and other categories. Among them, the pre-twisted suspension clamp is an important hardware used to fix the conductor or lightning conductor on the power tower or support point. Its combination of inner and outer layers of spiral pre-twisted wire can well protect the conductor, avoid bending stress, and play a role in protecting the conductor and assisting in vibration reduction.

[0003] A Chinese patent document with authorization announcement number CN221961583U discloses a pre-twisted wire suspension clamp for power engineering. The pre-twisted wire suspension clamp for power engineering uses a rubber clamp inside a first clamp and a second clamp, and a slip ring is embedded inside the first clamp and the second clamp. A magnet block is fixedly connected to the side of the slip ring, and a first limiting iron block and a second limiting iron block are installed on the side of the first clamp and the second clamp. After the first clamp and the second clamp are clamped, the slip ring inside the first clamp is embedded in the second clamp, and the slip ring inside the second clamp on the other side is embedded in the first clamp. The first clamp and the second clamp are connected together through the slip ring, so that the first clamp and the second clamp cannot be opened to both sides, thereby avoiding the situation where the nut loosens and causes the first clamp, the second clamp and the rubber clamp to fail to effectively clamp the wire, and the clamping is more stable during use.

[0004] However, during the installation process of the above-mentioned pre-twisted wire suspension clamp used in power engineering in the prior art, it is necessary to open the first clamp and the second clamp, and make the first clamp and the second clamp fit the rubber clamp wrapped with the pre-twisted wire, and then close the first clamp and the second clamp. When the staff installs it, improper installation by the staff may cause the installation position of the first clamp and the second clamp to deviate, so that the closed surface of the first clamp and the second clamp is not vertical, which will cause the suspension clamp to tilt after installation and the pre-twisted wire to be unevenly stressed, affecting the stability and safety of the wire and causing damage or breakage of the wire. Summary of the invention

[0005] The present invention provides a cable fixing hardware, aiming to solve the problem that it is difficult to ensure the verticality of the closed surface of the first clamping plate and the second clamping plate during the installation process of the pre-twisted wire suspension clamp used in power engineering in the related art.

[0006] The present invention provides a cable fixing hardware adopting the following technical solution:

[0007] A cable fixing hardware, comprising two arc-shaped clamping plates hinged to each other and opposite to each other, a straight plate installed on each arc-shaped clamping plate, and a clamping bolt installed between the two straight plates, at least one of the two arc-shaped clamping plates has a reference surface formed on its outer surface and has an arc-shaped chamber inside, a detection mechanism is installed in the arc-shaped chamber, and the detection mechanism comprises: a detection member, the detection member is assembled on the upper part of the arc-shaped clamping plate in an up-and-down manner, the lower end of the detection member extends into the arc-shaped chamber under the action of gravity, and the upper surface of the detection member is formed to be able to contact with the reference surface. The detection surface is flush with the surface; a rolling member, which is movably assembled in the arc chamber and can move along the arc chamber under the action of gravity; a moving plate, which is movably assembled in the arc chamber and is located between the rolling member and the detection member, the lower end of the moving plate contacts the rolling member under the action of gravity, and can be pushed by the rolling member to move along the arc chamber, the upper surface of the moving plate forms a transmission surface for pushing the lower end of the detection member, and when the moving plate moves along the arc chamber, the transmission surface can push the detection member to move up and down.

[0008] The above technical solution is adopted, by setting a detection mechanism on the arc clamp, in the process of clamping the cable wrapped with pre-twisted wire, the rotation angle of the arc clamp relative to the cable can affect the position of the rolling element in the arc chamber, and the rolling element pushes the moving plate to move along the arc chamber, so that the transmission surface of the moving plate can push the detection element up and down, so that the staff can evaluate the verticality of the closed surface of the arc clamp by comparing the actual position of the detection surface with the reference surface, and adjust and correct the position of the arc clamp according to the deviation between the actual position of the detection surface and the reference surface, until the actual position of the detection surface is flush with the reference surface and the required verticality is achieved, thereby ensuring that the closed surface of the arc clamp is vertical. The detection mechanism is set on the hardware, and the staff does not need to carry and switch additional measuring tools, especially when working at high altitude or in remote areas, which reduces the workload of the staff and reduces the work risk. Through mechanical detection, the verticality information of the closed surface of the arc clamp is fed back in real time, which is convenient for timely adjustment and correction, reduces the error when manually installing the arc clamp, and improves the accuracy of the installation process.

[0009] Furthermore, a handle is provided on the upper surface of the detection member.

[0010] By adopting the above technical solution, the setting of the handle makes it convenient for the staff to take and replace the detection parts.

[0011] Furthermore, the rolling element includes a mounting block extending forward and backward, and a plurality of rolling balls mounted on the lower end of the mounting block.

[0012] By adopting the above technical solution, the arrangement of multiple rolling balls is conducive to making the contact surface between the rolling element and the arc-shaped chamber more uniform, making the rolling of the rolling element more stable and smooth.

[0013] Furthermore, the cable fixing hardware also includes a pre-tensioning mechanism, and at least one of the two straight plates is provided with a pre-tensioning mechanism, and the pre-tensioning mechanism includes a ratchet rotatably installed in the straight plate for driving the clamping bolt to rotate, an elastic telescopic rod assembled in the straight plate for moving up and down, and a plurality of push teeth arranged on the elastic telescopic rod for pushing the ratchet to rotate.

[0014] Furthermore, the lower end of each arc-shaped chamber is equipped with a push plate that moves left and right, and the end of the rolling element away from the movable plate abuts against the push plate. The push plate can extend outward from the arc-shaped chamber, and the two push plates are opposite to each other left and right and can abut against each other. Each movable plate is provided with an extension rod for pushing the elastic telescopic rod upward.

[0015] By adopting the above technical solution, the interaction force when the two arc-shaped clamping plates are closed is converted into a pre-tightening force for the clamping bolts, thereby ensuring a stronger connection between the suspension head and the hanging plate, preventing the clamping bolts from loosening during cable shaking, and improving the overall stability and safety.

[0016] Furthermore, a circular hole for inserting a clamping bolt is formed on the inner circumference of the ratchet, a protrusion is provided on the side wall of the circular hole, and a groove capable of cooperating with the protrusion is formed on the outer circumference of the clamping bolt.

[0017] Furthermore, the elastic telescopic rod includes a sleeve rod, an inner rod and a spring, the sleeve rod is located above the inner rod, the inner rod is sleeved in the sleeve rod, the spring is connected between the sleeve rod and the inner rod, and the plurality of push teeth are fixed on the sleeve rod in sequence from top to bottom.

[0018] Furthermore, the pre-tightening mechanism also includes a pressing rod which is mounted on the straight plate and can be moved up and down. The pressing rod is located above the elastic telescopic rod and is used to push the elastic telescopic rod to move downward.

[0019] With the above technical solution, the setting of the pressing rod is used to provide a certain upward movement margin for the elastic telescopic rod.

[0020] Furthermore, each of the arc-shaped clamping plates is provided with an opening extending left and right at the lower end of the arc-shaped chamber, and the push plate includes a transverse plate and a vertical plate, the transverse plate is installed in the opening for left and right movement, and the vertical plate is fixed to one end of the transverse plate extending out of the opening.

[0021] The beneficial effect of a cable fixing hardware provided by the present invention is that: by arranging a detection mechanism on the arc clamp, in the process of clamping the cable wrapped with pre-twisted wires, the rotation angle of the arc clamp relative to the cable can affect the position of the rolling element in the arc chamber, and the rolling element pushes the moving plate to move along the arc chamber, so that the transmission surface of the moving plate can push the detection element to move up and down, so that the staff can evaluate the verticality of the closed surface of the arc clamp by comparing the relationship between the actual position of the detection surface and the reference surface, and adjust and correct the position of the arc clamp according to the deviation between the actual position of the detection surface and the reference surface, until the actual position of the detection surface is flush with the reference surface and the required verticality is achieved, thereby ensuring that the closed surface of the arc clamp is vertical. The detection mechanism is arranged on the hardware, and the staff does not need to carry and switch additional measuring tools, especially when working at high altitude or in remote areas, which reduces the workload of the staff and reduces the work risk. Through mechanical detection, the verticality information of the closed surface of the arc clamp is fed back in real time, which is convenient for timely adjustment and correction, reduces the error when manually installing the arc clamp, and improves the accuracy of the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the external structure of the cable fixing hardware of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the detection mechanism of the cable fixing hardware of the present invention.

[0024] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 It is a structural schematic diagram of the pre-tightening mechanism of the cable fixing hardware of the present invention.

[0026] Figure 5 It is a structural schematic diagram of the detection mechanism and pre-tightening mechanism of the cable fixing hardware of the present invention.

[0027] Reference numerals:

[0028] 10. hanging plate; 20. straight plate; 30. arc-shaped clamping plate; 310. reference plane; 320. arc-shaped chamber; 321. arc-shaped groove; 40. clamping bolt; 410. groove; 510. detection member; 511. detection surface; 512. handle; 520. rolling member; 521. mounting block; 522. rolling ball; 530. moving plate; 531. transmission surface; 610. ratchet; 611. bump; 620. elastic telescopic rod; 621. sleeve rod; 622. inner rod; 623. spring; 630. push tooth; 640. pressing rod; 70. push plate; 710. horizontal plate; 720. vertical plate; 80. extending rod. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] like Figures 1 to 5 As shown, and refer to Figure 1 As shown in the figure, an embodiment of the cable fixing hardware of the present invention includes a hanging plate 10, a straight plate 20, an arc-shaped clamping plate 30, a clamping bolt 40, a detection mechanism and a pre-tightening mechanism. Among them, there are two arc-shaped clamps 30 for clamping cables wrapped with pre-twisted wires; the straight plates 20 correspond to each arc-shaped clamp 30 and are fixed at the upper ends of the arc-shaped clamps 30, and the two straight plates 20 and the two arc-shaped clamps 30 form a hanging head for supporting the cable; the hanging plate 10 is installed between the two straight plates 20, and the number of clamping bolts 40 is two. The clamping bolts 40 located at the bottom are used to fix the two straight plates 20, and the clamping bolts 40 located at the top are used to install the two straight plates 20 on the hanging plate 10, so as to fix the hanging head with the cable installed on the hanging plate 10 to ensure that the cable will not fall off during the hanging process; the detection mechanism corresponds to each arc-shaped clamp 30 and is arranged in the arc-shaped clamp 30, and is used to detect the verticality of the closed surface of the arc-shaped clamp 30; the pre-tightening mechanism corresponds to each straight plate 20 and is arranged in the straight plate 20, and is used to use the closure of the two arc-shaped clamps 30 to apply a pre-tightening force to the clamping bolts 40, thereby preventing the clamping bolts 40 from loosening.

[0031] like Figure 2 As shown, the cross section of each arc-shaped clamping plate 30 is C-shaped, and the openings of the two arc-shaped clamping plates 30 are opposite to each other to clamp the cable wrapped with pre-twisted wires, and the opposite surfaces of the two arc-shaped clamping plates 30 are closed surfaces. The lower ends of the two arc-shaped clamping plates 30 are hinged to each other to allow the arc-shaped clamping plates 30 to rotate relative to each other within a certain range, so that the two arc-shaped clamping plates 30 can be easily opened, which is convenient for workers to maintain, detect or replace the cable. A reference surface 310 is formed on the upper surface of each arc-shaped clamping plate 30, which provides a stable reference for the detection mechanism to detect the verticality of the closed surface of the arc-shaped clamping plate 30; and each arc-shaped clamping plate 30 has an arc-shaped chamber 320 inside for installing the detection mechanism, and the arc-shaped chamber 320 has concentrically arranged inner arc side walls and outer arc side walls, and the front and rear side walls of the arc-shaped chamber 320 are both provided with arc-shaped grooves 321, and each arc-shaped clamping plate 30 is provided with an opening extending left and right at the lower end of the arc-shaped chamber 320, and a receiving groove extending up and down is provided at the end of the opening away from the arc-shaped chamber 320.

[0032] like Figure 2 , Figure 3 and Figure 5 As shown, each detection mechanism includes a detection member 510 , a rolling member 520 , a moving plate 530 and a push plate 70 .

[0033] The detection member 510 is assembled on the upper part of the arc-shaped clamping plate 30 by moving up and down. The lower end of the detection member 510 extends into the arc-shaped chamber 320 under the action of gravity. The upper surface of the detection member 510 forms a detection surface 511 that can be flush with the reference surface 310. The upper surface of the detection member 510 is provided with a handle 512. The setting of the handle 512 is convenient for the staff to take and replace the detection member 510. In the process of clamping the cable wrapped with pre-twisted wires, the staff can evaluate the verticality of the closed surface of the arc-shaped clamping plate 30 by comparing the actual position of the detection surface 511 with the reference surface 310, and adjust and correct the position of the arc-shaped clamping plate 30 according to the deviation between the actual position of the detection surface 511 and the reference surface 310, until the actual position of the detection surface 511 is flush with the reference surface 310 and the required verticality is achieved, thereby ensuring that the closed surface of the arc-shaped clamping plate 30 is vertical. The vertical closed surface can ensure that after the suspension head with the cable installed is fixed on the hanging plate 10, the suspension head remains vertical, avoiding tilting of the suspension head, thereby providing better structural stability and ensuring that the pre-twisted wire is subjected to uniform pressure between the two arc-shaped clamping plates 30, which helps to better fix the cable and prevent the cable from shifting or loosening in the suspended state, thereby improving the reliability and safety of the cable fixing hardware.

[0034] The rolling member 520 is movably assembled in the arc chamber 320, and the rolling member 520 can move along the arc chamber 320 under the action of gravity. The rolling member 520 includes a mounting block 521 extending forward and backward, and a plurality of rolling balls 522 mounted at the lower end of the mounting block 521. The front and rear ends of the mounting block 521 are movably mounted in the arc groove 321 through guide blocks to limit the stable movement of the rolling member 520 along the arc groove 321 to avoid deviation. The lower end of the mounting block 521 has an arc opening with an opening facing downward, and a plurality of rolling balls 522 are mounted in the arc opening. The lower ends of the rolling balls 522 contact the lower side wall of the arc chamber 320 to move along the arc chamber 320 under the action of gravity. The arrangement of the plurality of rolling balls 522 is conducive to making the contact surface between the rolling member 520 and the arc chamber 320 more uniform, so that the rolling of the rolling member 520 is more stable and smooth.

[0035] The movable plate 530 is in an arc shape as a whole. The movable plate 530 is movably assembled in the arc chamber 320 and is located between the rolling member 520 and the detection member 510. The lower end of the movable plate 530 contacts the rolling member 520 under the action of gravity, and can be pushed by the rolling member 520 to move along the arc chamber 320. The upper surface of the movable plate 530 forms a transmission surface 531 for pushing against the lower end of the detection member 510. The transmission surface 531 is in an arc shape and is eccentrically arranged relative to the inner arc side wall of the arc chamber 320, so that when the movable plate 530 moves along the arc chamber 320, the transmission surface 531 can push the detection member 510 to move up and down. Two extension rods 80 are fixed to the outer arc side of the movable plate 530.

[0036] The push plate 70 includes a horizontal plate 710 and a vertical plate 720. The horizontal plate 710 is installed in the opening to move left and right, and the vertical plate 720 is fixed to one end of the horizontal plate 710 extending out of the opening and can enter the receiving groove. The end of the rolling member 520 away from the moving plate 530 contacts the horizontal plate 710, and the vertical plates 720 of the two push plates 70 are opposite to each other and can contact each other.

[0037] Thus, in the process of clamping the cable wrapped with pre-twisted wires, the rotation angle of the arc clamp 30 relative to the cable can affect the position of the rolling element 520 in the arc chamber 320, and the rolling element 520 pushes the moving plate 530 to move along the arc chamber 320, so that the transmission surface 531 of the moving plate 530 can push the detection element 510 to move up and down, so that the staff can adjust and correct the position of the arc clamp 30 by comparing the actual position of the detection surface 511 with the reference surface 310, thereby ensuring that the closed surface of the arc clamp 30 is vertical. The detection mechanism is set on the hardware, and the staff does not need to carry and switch additional measuring tools, especially when working at high altitude or in remote areas, which reduces the workload of the staff and reduces the work risk. Through mechanical detection, the verticality information of the closed surface of the arc clamp 30 is fed back in real time, which is convenient for timely adjustment and correction, reduces the error when manually installing the arc clamp 30, and improves the accuracy of the installation process.

[0038] like Figure 4 and Figure 5 As shown, the pre-tightening mechanism includes a ratchet 610 rotatably installed in the straight plate 20 for driving the clamping bolt 40 to rotate, an elastic telescopic rod 620 assembled in the straight plate 20 for moving up and down, a plurality of pushing teeth 630 arranged on the elastic telescopic rod 620 for pushing the ratchet 610 to rotate, and a pressing rod 640 assembled on the straight plate 20 for moving up and down.

[0039] The ratchet 610 has a circular hole formed on its inner circumference for inserting the clamping bolt 40, a convex block 611 is provided on the side wall of the circular hole, and a groove 410 capable of cooperating with the convex block 611 is provided on the outer circumference of the clamping bolt 40. The ratchet 610 drives the clamping bolt 40 to rotate through the convex block 611.

[0040] The elastic telescopic rod 620 includes a sleeve rod 621, an inner rod 622 and a spring 623. The sleeve rod 621 is located above the inner rod 622, the inner rod 622 is sleeved in the sleeve rod 621, the spring 623 is connected between the sleeve rod 621 and the inner rod 622, and a plurality of push teeth 630 are fixed on the sleeve rod 621 in sequence from top to bottom.

[0041] The pressing rod 640 is located above the elastic telescopic rod 620 and is used to push the elastic telescopic rod 620 to move downward.

[0042] Therefore, the staff uses the detection mechanism to close the two arc-shaped clamping plates 30 that clamp the cable wrapped with the pre-twisted wire, and inserts the clamping bolt 40 into the circular hole of the ratchet 610, and then refers to Figure 4 In the position shown in , the clamping bolt 40 is rotated clockwise to lock the clamping bolt 40, and the ratchet 610 does not rotate at this time. The pressing rod 640 is pressed downward, and the pressing rod 640 pushes the elastic telescopic rod 620 downward to provide a certain upward movement margin for the elastic telescopic rod 620, and the pushing teeth 630 push the ratchet teeth of the ratchet 610, so that the ratchet 610 rotates counterclockwise, and the clamping bolt 40 does not rotate at this time. As the two arc-shaped clamping plates 30 are closed and the vertical plates 720 of the two push plates 70 push against each other, the push plate 70 enables the protruding rod 80 of the movable plate 530 to give the elastic telescopic rod 620 a driving force to move upward through the rolling member 520. When the elastic telescopic rod 620 moves upward, the pushing tooth 630 pushes the ratchet teeth of the ratchet 610, causing the ratchet 610 to rotate clockwise. Due to the unidirectional movement of the ratchet 610, the ratchet 610 drives the clamping bolt 40 to rotate clockwise, so as to convert the interaction force when the two arc-shaped clamping plates 30 are closed into a pre-tightening force for the clamping bolt 40, thereby ensuring that the connection between the suspension head and the hanging plate 10 is more secure, preventing the clamping bolt 40 from loosening during the shaking of the cable, and improving the overall stability and safety.

[0043] It should be noted that when the detection mechanism is working, the two arc-shaped clamping plates 30 are in an open state, and a certain spacing is formed between the lower end openings of the two arc-shaped clamping plates 30 for the push plate 70 to move, so that the push plate 70 can move between the two arc-shaped clamping plates 30 without affecting the movement of the rolling element 520 along the arc-shaped chamber 320 under the action of gravity. After the closed surface of one of the arc-shaped clamping plates 30 is adjusted to be vertical through the detection of the detection mechanism, the staff closes the two arc-shaped clamping plates 30, and at this time, the vertical plates 720 of the two push plates 70 push against each other to cooperate with the pre-tightening mechanism to pre-tighten the clamping bolts 40.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A cable fixing hardware, comprising two arc-shaped clamping plates hinged to each other and opposite to each other, a straight plate installed on each arc-shaped clamping plate, and a clamping bolt installed between the two straight plates, characterized in that: The outer surface of at least one of the two arc-shaped clamping plates is formed with a reference surface and has an arc-shaped chamber inside, and a detection mechanism is installed in the arc-shaped chamber, and the detection mechanism includes: A detection member, the detection member is assembled on the upper part of the arc-shaped clamping plate so as to move up and down, the lower end of the detection member extends into the arc-shaped chamber under the action of gravity, and the upper surface of the detection member forms a detection surface that can be flush with the reference surface; A rolling element, the rolling element is movably assembled in the arc-shaped chamber, and the rolling element can move along the arc-shaped chamber under the action of gravity; A movable plate is movably assembled in the arc chamber and is located between the rolling element and the detection element. The lower end of the movable plate contacts the rolling element under the action of gravity and can be pushed by the rolling element to move along the arc chamber. The upper surface of the movable plate forms a transmission surface for pushing the lower end of the detection element. When the movable plate moves along the arc chamber, the transmission surface can push the detection element to move up and down.

2. A cable fixing fitting according to claim 1, characterized in that: A handle is provided on the upper surface of the detection member.

3. The cable fixing fitting according to claim 1, characterized in that: The rolling element comprises a mounting block extending forward and backward and a plurality of rolling balls mounted on the lower end of the mounting block.

4. The cable fixing fitting according to claim 1, characterized in that: The cable fixing hardware also includes a pre-tightening mechanism, and at least one of the two straight plates is provided with the pre-tightening mechanism, and the pre-tightening mechanism includes a ratchet rotatably installed in the straight plate for driving the clamping bolt to rotate, an elastic telescopic rod assembled in the straight plate for moving up and down, and a plurality of push teeth arranged on the elastic telescopic rod for pushing the ratchet to rotate.

5. The cable fixing fitting according to claim 4, characterized in that: The lower end of each arc-shaped chamber is equipped with a push plate for left and right movement, and the end of the rolling element away from the moving plate abuts against the push plate. The push plate can extend outward from the arc-shaped chamber. The two push plates are opposite to each other and can abut against each other. Each moving plate is provided with an extension rod for pushing the elastic telescopic rod upward.

6. The cable fixing fitting according to claim 4, characterized in that: A circular hole for inserting a clamping bolt is formed on the inner circumference of the ratchet, a convex block is arranged on the side wall of the circular hole, and a groove capable of cooperating with the convex block is arranged on the outer circumference of the clamping bolt.

7. The cable fixing fitting according to claim 4, characterized in that: The elastic telescopic rod comprises a sleeve rod, an inner rod and a spring, the sleeve rod is located above the inner rod, the inner rod is sleeved in the sleeve rod, the spring is connected between the sleeve rod and the inner rod, and a plurality of push teeth are fixed on the sleeve rod in sequence from top to bottom.

8. The cable fixing fitting according to claim 4, characterized in that: The pre-tightening mechanism also includes a pressing rod which is mounted on the straight plate and moves up and down. The pressing rod is located above the elastic telescopic rod and is used to push the elastic telescopic rod to move downward.

9. The cable fixing fitting according to claim 5, characterized in that: Each arc-shaped clamping plate is provided with an opening extending left and right at the lower end of the arc-shaped chamber. The push plate includes a horizontal plate and a vertical plate. The horizontal plate is installed in the opening for left and right movement, and the vertical plate is fixed to one end of the horizontal plate extending out of the opening.

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