Self-locking S-shaped drainage wire clamp for ground potential operation of electric power circuit

Abstract

The utility model discloses a power line ground potential operation self-locking type S-shaped drainage wire clamp which comprises a vertically arranged wire clamp, the wire clamp is provided with a main wire cavity and an auxiliary wire cavity which are transversely arranged, the inner walls of the main wire cavity and the auxiliary wire cavity are both provided with screw holes, the screw hole of the main wire cavity is in threaded connection with a hanging ring screw, and the hanging ring screw is in threaded connection with the hanging ring screw. The screw hole of the auxiliary line cavity is in threaded connection with a torque screw, the end, opposite to the hanging ring screw, of the torque screw penetrates through the corresponding screw hole from outside to inside to be rotationally connected with a pressing block, and the two transverse side faces of the pressing block are provided with limiting check blocks in one-to-one correspondence. Limiting guide grooves in sliding fit with the limiting check blocks are formed in the main line cavity and the auxiliary line cavity correspondingly, and limiting notches corresponding to the limiting check blocks are formed in the notches of the main line cavity and the auxiliary line cavity correspondingly. The transverse inner wall of the limiting notch is flush with the transverse inner wall corresponding to the limiting guide groove. The pressure exerted by the hanging ring screw on the pressing block is limited, and the probability that the pressing block abuts against the main cable to damage the main cable is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit wire clamps, in particular to a self-locking S-shaped drainage wire clamp for live working at ground potential of power lines. Background Art

[0002] When the S-shaped line drainage wire clamp is specifically used, first, the insulating skin of the line needs to be cut off, and then the auxiliary cable is locked on the ground by a torque screw. After the auxiliary cable is locked by the torque screw in cooperation with the corresponding pressure block, the sling rod and the wire clamp can be connected by using a shot gun operating rod, and then the wire clamp is hung on the main cable. After that, the shot gun operating rod can be controlled to loosen the sling rod and the shot gun operating rod can be used to rotate the sling rod, so as to lock the main cable and the wire clamp to complete the connection.

[0003] In the process of connecting the main cable and the wire clamp, it is necessary to use the shot gun operating rod to rotate the sling rod, and then cooperate with the corresponding pressure block to lock the main cable in the main cable cavity of the wire clamp. When the pressure applied by the sling rod to the pressure block is large, the pressure block will cooperate with the main cable cavity to damage the main cable, thereby increasing the probability of the main cable breaking. When the pressure applied by the sling rod to the pressure block is small, the force for the pressure block to lock the main cable will be small, thereby reducing the probability of the main cable slipping off between the main cable cavity and the pressure block.

[0004] In the prior art, the method of rotating the sling rod by the staff through the shot gun operating rod to connect the main cable and the wire clamp mostly requires the staff to determine whether the top pressure of the sling rod on the pressure block is appropriate through their own experience and the damping feeling transmitted by the shot gun operating rod, that is, to determine whether the connection between the main cable and the wire clamp is stable through experience or damping feeling. In order to ensure the stability of the connection between the wire clamp and the main cable, the staff often rotates the sling rod with all their strength, which often causes a large top pressure of the pressure block and damages the main cable, thus affecting the service life of the main cable. Content of the Utility Model

[0005] The purpose of the utility model is to provide a self-locking S-shaped drainage wire clamp for live working at ground potential of power lines to solve the problem that in the prior art, in order to maintain the stability of the connection between the wire clamp and the main cable, the staff often controls the sling rod to apply a large pressure to the pressure block, which damages the main cable.

[0006] To address the deficiencies of the above technical problems, the technical solution adopted by the present utility model is as follows: A self-locking S-shaped drainage wire clamp for live working at ground potential of a power line, including a vertically arranged wire clamp. Horizontally arranged main wire cavities and auxiliary wire cavities are provided on the wire clamp. Notches are provided at the horizontally opposite ends of the main wire cavity and the auxiliary wire cavity. Screw holes are provided on the inner walls of the main wire cavity and the auxiliary wire cavity, and the two screw holes are mirror-symmetrically arranged. A hanging ring screw is threadedly connected to the screw hole of the main wire cavity, and a torque screw is threadedly connected to the screw hole of the auxiliary wire cavity. The opposite ends of the torque screw and the hanging ring screw pass through the corresponding screw holes from outside to inside and are rotatably connected to a pressing block. Corresponding limiting blocks are provided on the two lateral sides of the pressing block in the horizontal direction.

[0007] Limiting guide grooves that are slidably matched with the limiting blocks are provided in both the main wire cavity and the auxiliary wire cavity. Limiting notches corresponding to the limiting blocks are provided at the notches of the main wire cavity and the auxiliary wire cavity. The limiting guide grooves and the limiting notches provided in the main wire cavity and the auxiliary wire cavity are mirror-symmetrically arranged.

[0008] The horizontal inner wall of the limiting notch is flush with the corresponding horizontal inner wall of the limiting guide groove, so as to cooperate with the limiting block to prevent the pressing block from excessively pressing the main cable or the auxiliary cable.

[0009] As a further optimization of the self-locking S-shaped drainage wire clamp for live working at ground potential of a power line of the present utility model, the inner walls of the main wire cavity and the auxiliary wire cavity facing away from the corresponding screw holes are arc-shaped.

[0010] As a further optimization of the self-locking S-shaped drainage wire clamp for live working at ground potential of a power line of the present utility model, an arc-shaped groove is provided on the side surface of the pressing block facing away from the corresponding screw block.

[0011] As a further optimization of the self-locking S-shaped drainage wire clamp for live working at ground potential of a power line of the present utility model, a stable top plate is fixedly connected to the hanging ring of the wire clamp corresponding to the hanging ring screw, and the stable top plate is disk-shaped corresponding to the hanging ring screw.

[0012] As a further optimization of the self-locking S-shaped drainage wire clamp for live working at ground potential of a power line of the present utility model, the limiting block includes an elastic plate fixed to the horizontal side surface of the pressing block and a reinforcing rib provided between the elastic plate and the pressing block. The elastic plate is adapted to the limiting guide groove and the limiting notch.

[0013] As a further optimization of the self-locking S-shaped drainage wire clamp for live working at ground potential of a power line of the present utility model, the reinforcing rib is triangular, and the reinforcing rib is perpendicular to the elastic plate.

[0014] As a further optimization of the self-locking S-shaped drainage wire clamp for live working at ground potential of a power line of the present utility model, the vertical thickness of the pressing block is less than the distance between the upper and lower side surfaces of the notch in the vertical direction to allow the main cable or the auxiliary cable to pass through.

[0015] As a further optimization of a self-locking S-shaped drainage wire clamp for live working on power lines of the present utility model, the inner wall of the upper side of the notch of the main wire cavity is arranged in an arc shape.

[0016] The present utility model has the following beneficial effects: By providing a limiting guide groove and a limiting notch to block the further sliding of the limiting block, the pressing block fixedly connected to the limiting block cannot excessively press the main wire or the secondary wire in the wire clamp, that is, by increasing the difficulty of moving the pressing block, it is prompted that the pressing force is appropriate for the staff, thereby reducing the probability of damage to the main wire or the secondary wire caused by excessive pressing force of the pressing block. When the limiting guide groove and the limiting notch block the further sliding of the limiting block, the limiting block will give a reaction force to the pressing block, and then the reaction force of the pressing block will be converted into an axial force acting on the corresponding screw hole of the torque screw or the lifting ring screw, thereby reducing the probability of loosening of the torque screw or the lifting ring screw in the corresponding screw hole, and further improving the connection stability between the wire clamp and the main wire and the secondary wire. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a cross-sectional structural schematic diagram of the present utility model;

[0019] Figure 3 is a three-dimensional structural schematic diagram of the present utility model in the use state;

[0020] Figure 4 is a cross-sectional structural schematic diagram of the present utility model in the use state;

[0021] Reference numerals in the drawings: 1, torque screw; 2, wire clamp; 201, secondary wire cavity; 202, limiting guide groove; 203, main wire cavity; 204, limiting notch; 205, stable top plate; 3, pressing block; 301, arc-shaped groove; 4, lifting ring screw, 5, limiting block; 501, elastic plate; 502, reinforcing rib; 6, main wire; 7, secondary wire. Detailed Embodiments

[0022] To better understand the present utility model, the content of the present utility model will be further clarified below in conjunction with embodiments, but the content of the present utility model is not limited to the following embodiments.

[0023] Such as Figure 1 and Figure 2As shown in the figure, a self-locking S-shaped drainage wire clamp for live working on an electric power line has a wire clamp 2, a torque screw 1 and a sling screw 4. The torque screw 1 and the sling screw 4 are threadedly connected to the screw holes formed in the wire clamp 2. The screw hole corresponding to the torque screw 1 is formed on the upper side of the secondary wire cavity 201 provided in the wire clamp 2, and the screw hole corresponding to the sling screw 4 is formed on the lower inner wall of the main wire cavity 203. One ends of the torque screw 1 and the sling screw 4 passing through the screw holes from the outside to the inside are rotatably connected with pressing blocks 3, and the two pressing blocks 3 are respectively arranged in the main wire cavity 203 and the secondary wire cavity 201.

[0024] As Figure 3 and Figure 4 shown in the figure, a notch larger than the corresponding pressing block 3 for the secondary cable 7 to pass through is provided on the side of the secondary wire cavity 201 away from the main wire cavity 203, so as to facilitate the staff to place the secondary cable 7 between the lower side of the pressing block 3 and the secondary wire cavity 201, thereby facilitating the staff to connect the secondary cable 7 to the secondary wire cavity 201, that is, facilitating the staff to complete the stable connection between the secondary cable 7 and the wire clamp 2. After the secondary cable 7 is fed between the lower side of the corresponding pressing block 3 and the secondary wire cavity 201, the staff can rotate the torque screw 1 on the ground, thereby driving the corresponding pressing block 3 to cooperate with the secondary wire cavity 201 to connect the secondary cable 7 to the wire clamp 2, so as to complete the stable connection between the secondary cable 7 and the wire clamp 2.

[0025] A notch larger than the corresponding pressing block 3 for the main cable 6 to pass through is provided on the side of the main wire cavity 203 away from the secondary wire cavity 201, and the inner wall of the upper side of the notch of the main cable 6 is arranged in an arc shape. Thus, after the secondary cable 7 is stably connected to the wire clamp 2, the staff can move the wire clamp 2 by means of a shooting rod to make the notch correspond to the main cable 6, and at the same time, use the arc-shaped setting of the inner wall of the upper side of the notch of the main wire cavity 203 for guiding, so as to assist the staff to quickly hang the main cable 6 into the main wire cavity 203. After the main cable 6 is hung into the main wire cavity 203, the sling screw 4 can be rotated by means of the shooting rod, thereby driving the corresponding pressing block 3 to press the main cable 6 to position the main cable 6 on the wire clamp 2, so as to complete the connection and installation of the wire clamp 2.

[0026] A stable top plate 205 is fixedly connected to the lower side of the wire clamp 2 corresponding to the main wire cavity 203. During the process of connecting the wire clamp 2 by the shooting rod, the staff can connect the sling screw 4 through the shooting rod, and at the same time, the sling screw 4 can be pulled and retracted into the groove formed at the end of the shooting rod. Then, the end of the shooting rod can press the stable top plate 205. The central disc shape of the stable top plate 205 can cooperate with the end of the shooting rod, so as to relatively stably position the wire clamp 2 at the end of the shooting rod. The setting of the stable top plate 205 can also increase the structural stability of the wire clamp 2 to a certain extent.

[0027] As Figure 3 and Figure 4As shown, on one end of the pressing block 3 facing away from the torque screw 1 or the lifting ring screw 4, an arc-shaped groove 301 is provided. The arc-shaped groove 301 can fit as closely as possible to the main cable 6 or the sub-cable 7, thereby improving the connection stability of the pressing block 3 to the main cable 6 or the sub-cable 7. On one side of the main wire cavity 203 and the sub-wire cavity 201 corresponding to the arc-shaped groove 301 of the pressing block 3, they are both arc-shaped, so as to cooperate with the arc-shaped groove 301 on the pressing block 3 to maintain the connection stability to the main cable 6 or the sub-cable 7, so that the wire clamp 2 can be stably connected to the main cable 6 and the sub-cable 7.

[0028] On the left and right side surfaces of the pressing block 3, limiting stoppers 5 are fixedly connected. The limiting stopper 5 facing the inside of the wire clamp 2 is slidably connected to a limiting guide groove 202, and a limiting notch 204 is correspondingly provided on the limiting stopper 5 facing the outside of the wire clamp 2. The limiting notch 204 is opened at the notch of the main wire cavity 203 or the sub-wire cavity 201, and the limiting notch 204 opened in the main wire cavity 203 is opened on the upper side of the notch, so as to cooperate with the limiting stopper 5 to protect the main cable 6 connected to the upper side of the main wire cavity 203. The limiting notch 204 of the sub-wire cavity 201 is opened on the lower side of the notch, so as to cooperate with the limiting stopper 5 to protect the sub-cable 7 connected to the lower side of the sub-wire cavity 201.

[0029] The limiting guide groove 202 is opened on the vertical inner wall of the main wire cavity 203 or the sub-wire cavity 201 facing away from the notch. The upper side of the limiting guide groove 202 opened on the main cable 6 is flush with the upper side of the limiting notch 204 opened in the main wire cavity 203, and the lower side of the limiting guide groove 202 opened in the sub-wire cavity 201 is flush with the lower side of the limiting notch 204 opened in the sub-wire cavity 201. When the limiting guide groove 202 corresponds to the limiting notch 204, the limiting stoppers 5 provided on both sides of the pressing block 3 can reduce the probability of the pressing block 3 tilting, so that the pressing block 3 can stably press the main cable 6 or the sub-cable 7.

[0030] The settings of the limiting guide groove 202 and the limiting notch 204 can cooperate with the limiting stopper 5 to limit the excessive pressing force of the pressing block 3, that is, to increase the damping feeling of the torque screw 1 and the lifting ring screw 4 screwing into the screw hole, that is, to increase the difficulty of the torque screw 1 and the lifting ring screw 4 screwing into the screw hole, so as to assist the staff to determine whether the pressing force of the torque screw 1 and the lifting ring screw 4 is appropriate, so that on the basis that the pressing block 3 cooperates with the main wire cavity 203 and the sub-wire cavity 201 to stably connect the main cable 6 and the sub-cable 7, the probability of the main cable 6 and the sub-cable 7 being damaged due to being overly pressed by the pressing block 3 cooperating with the main wire cavity 203 and the sub-wire cavity 201 is reduced.

[0031] The limiting stop 5 includes an elastic plate 501 fixed to the left and right sides of the pressing block 3 and a reinforcing rib 502. The elastic plate 501 is arranged parallel to the lower side of the pressing block 3. When the limiting stop 5 abuts against the inner walls of the limiting guide groove 202 and the limiting notch 204, the elastic plate 501 can increase the difficulty of further pressing the pressing block 3, that is, increase the damping feeling of the operator when rotating the torque screw 1 or the eyebolt 4, so as to prompt the operator that the pressing force is already appropriate, and further reduce the probability of the operator over-applying the pressing force and damaging the main cable 6 or the sub-cable 7. When the elastic plate 501 increases the difficulty of further pressing the pressing block 3, it will also push the torque screw 1 or the eyebolt 4 to press the corresponding screw hole, that is, apply an axial force to the torque screw 1 or the eyebolt 4, thereby reducing the probability of the torque screw 1 or the eyebolt 4 loosening in the corresponding screw hole, that is, improving the stability of the wire clamp 2 connecting the main cable 6 and the sub-cable 7 to a certain extent.

[0032] The reinforcing rib 502 is triangular and is perpendicularly connected to the elastic plate 501, thereby increasing to a certain extent the damping feeling provided when the elastic plate 501 is connected to the limiting guide groove 202 and the limiting notch 204, that is, reducing the possibility of the elastic plate 501 easily detaching from the limiting guide groove 202 or the limiting notch 204 and causing the loss of the structure, thus maintaining the functional stability of the structure.

[0033] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. A self-locking S-shaped drainage clamp for ground potential operation of a power line, comprising a vertically arranged clamp (2), the clamp (2) being provided with a transversely arranged main line cavity (203) and a secondary line cavity (201), notches being provided at the transversely opposite ends of the main line cavity (203) and the secondary line cavity (201), screw holes being provided on the inner walls of the main line cavity (203) and the secondary line cavity (201), the two screw holes being arranged in a mirror image, the screw hole of the main line cavity (203) being threadedly connected with a lifting eye screw (4), the screw hole of the secondary line cavity (201) being threadedly connected with a torque screw (1), the opposite ends of the torque screw (1) and the lifting eye screw (4) being rotatably connected with a pressing block (3) from the outside to the inside through the corresponding screw holes, characterized in that: The two lateral sides of the pressing block (3) are provided with corresponding limiting blocks (5); The main line cavity (203) and the auxiliary line cavity (201) are both provided with a limiting guide groove (202) that is slidably matched with the limiting block (5), and the notches of the main line cavity (203) and the auxiliary line cavity (201) are both provided with a limiting notch (204) that corresponds to the limiting block (5), and the limiting guide groove (202) and the limiting notch (204) provided in the main line cavity (203) and the auxiliary line cavity (201) are arranged in a mirror image; The transverse inner wall of the limiting groove (204) is flush with the corresponding transverse inner wall of the limiting guide groove (202), and is used to cooperate with the limiting block (5) to prevent the pressing block (3) from excessively pressing the main cable (6) or the auxiliary cable (7).

2. A self-locking S-shaped drain clamp for ground potential operation of a power line as claimed in claim 1, characterized in that: The inner walls of the main line cavity (203) and the auxiliary line cavity (201) facing away from the corresponding screw holes are arranged in an arc shape.

3. A self-locking S-shaped drain clamp for ground potential operation of a power line as claimed in claim 1, characterized in that: An arc-shaped groove (301) is formed on a side of the pressing block (3) facing away from the corresponding screw block.

4. A self-locking S-shaped drain clamp for ground potential operation of a power line as claimed in claim 1, characterized in that: The wire clamp (2) is fixedly connected to a stabilizing top plate (205) at the lifting ring corresponding to the lifting ring screw (4), and the stabilizing top plate (205) is arranged in a disc shape at the lifting ring screw (4).

5. A self-locking S-shaped drain clamp for ground potential operation of a power line as claimed in claim 1, characterized in that: The limiting block (5) comprises an elastic plate (501) fixed to the lateral side of the pressing block (3) and a reinforcing rib (502) arranged between the elastic plate (501) and the pressing block (3); the elastic plate (501) is adapted to the limiting guide groove (202) and the limiting notch (204).

6. A self-locking S-shaped drain clamp for ground potential operation of a power line as claimed in claim 5, characterized in that: The reinforcing rib (502) is triangular in shape, and the reinforcing rib (502) and the elastic plate (501) are arranged perpendicularly.

7. A self-locking S-shaped drain clamp for ground potential operation of a power line as claimed in claim 1, characterized in that: The vertical thickness of the pressing block (3) is smaller than the vertical spacing between the upper and lower sides of the notch to allow the main cable (6) or the auxiliary cable (7) to pass through.

8. A self-locking S-shaped drain clamp for ground potential operation of a power line as claimed in claim 1, characterized in that: The inner wall of the upper side surface of the notch of the main line cavity (203) is arranged in an arc shape.

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