Efficient operation grounding wire clamp for distribution network line

Abstract

The invention relates to the technical field of conductive connection, and discloses a distribution network line efficient operation grounding wire clamp which comprises a wire clamp body with an opening and a movable block installed on the wire clamp body, a pull rod is installed on the wire clamp body in a sliding mode, and the upper end of the pull rod is connected with the movable block. The pull rod drives the movable block to move to change the distance from the movable block to the top of the wire clamp body; the movable block is provided with a clamping station and an in-situ station; when the movable block is located at the clamping station, the movable block is separated from the top of the cable clamp body and clamps a cable, the elastic piece is in a compressed state, and when the movable block is located at the in-situ station, the movable block makes contact with the cable clamp body. The movable block has conductivity, a conductive elastic piece is installed on the wire clamp body, when the movable block is located at a clamping station, the side face of the movable block abuts against the movable end of the conductive elastic piece, and the conductive elastic piece guides the movable block in the lifting process. The cable clamp is simple in structure, and guarantees the clamping stability of the cable clamp body and the movable block on a cable on the basis of realizing convenient hanging.

Description

Technical Field

[0001] This invention relates to the technical field of grounding conductor connection equipment during power grid maintenance, and particularly to a high-efficiency operating grounding clamp for distribution network lines. Background Technology

[0002] The current grounding device operation method requires substation maintenance personnel to select either flat clamps or hook clamps depending on the conductor type when performing grounding work: for planar conductors such as grounding flat iron and rectangular busbars, flat clamps with a bottom rotating and tightening structure are used for grounding; for round conductors, hook clamps are required for fixation. Currently, the grounding wire hanging and unhanging operation mainly involves on-site personnel inserting the grounding wire end into the notch of the insulating operating rod, lifting the rod, aligning the grounding clamp with the copper busbar, and then manually rotating the insulating operating rod approximately 16 turns to ensure the grounding clamp is securely engaged with the copper busbar.

[0003] A search revealed a Chinese patent, CN211579008U, entitled "A Spring-Linked Clip-Type Grounding Wire," which discloses a grounding wire that releases the clamp by pulling a transmission rod to compress a spring. The patent's shortcoming lies in the fact that, as is well known, conductivity is related to the contact area; the larger the contact area, the better the conductivity. However, in this patent, the conductivity between the cable and the clamp is limited to the contact between the cable and the top of the clamp, and the cable is generally composed of multiple strands of wire twisted together. Therefore, the contact area between the cable and the clamp is relatively small. If significant shaking occurs, the contact area between the cable and the clamp may become even smaller, affecting conductivity and grounding effectiveness to some extent. Summary of the Invention

[0004] To address the technical problems existing in the background art, this invention proposes a high-efficiency operating grounding clamp for distribution network lines.

[0005] The present invention proposes an efficient operating grounding clamp for distribution network lines, comprising a clamp body with an opening and a movable block mounted on the clamp body. The distance between the movable block and the top of the clamp body can be adjusted to clamp or loosen the cable. Unlike the prior art, a pull rod is slidably mounted on the clamp body, and the upper end of the pull rod is connected to the movable block. The pull rod drives the movable block to move to change the distance between the movable block and the top of the clamp body.

[0006] An elastic element is provided between the movable block and the wire clamp body. The movable block has a clamping position and a home position. When the movable block is in the clamping position, the movable block separates from the top of the wire clamp body and clamps the cable. The elastic element is in a compressed state. When the movable block is in the home position, the movable block is in contact with the wire clamp body.

[0007] The movable block is conductive, and a conductive spring is installed on the clamp body. When the movable block is in the clamping position, the side of the movable block abuts against the movable end of the conductive spring, and the conductive spring guides the movable block during its lifting and lowering process.

[0008] During operation, pulling down the lever compresses the elastic element, positioning the cable between the movable block and the top of the clamp body. Then, the downward force on the lever is released. Under the elastic force of the elastic element, the movable block moves upward and squeezes the cable. The movable block presses against the movable end of the conductive spring, ensuring that both the movable block and the clamp body are in contact with the cable. Simultaneously, the movable block presses against the conductive spring, establishing a conductive connection between the movable block and the clamp body, further improving the stability of the grounding.

[0009] Preferably, the elastic element has conductive properties, with its upper end abutting against the movable block and its lower end abutting against the wire clamp body, thereby making the movable block electrically connected to the wire clamp body through the elastic element.

[0010] Specifically, the movable block has a groove on its side, the conductive spring is located in the groove, and the side of the movable end of the conductive spring is in contact with the side of the groove.

[0011] As a further optimization of the present invention, the side of the movable block is slidably mounted on the wire clamp body. Optionally, in some technical solutions, the side of the slide groove has a portion that is slidably connected to the wire clamp body, and the conductive spring is located within the slide groove.

[0012] Preferably, to ensure conductive connection between the movable block and the clamp body, a slide rail is mounted on the side wall of the movable block via a conductive elastic element, and the slide rail has conductive function. When the movable block is slidably mounted on the slide rail, the conductive elastic element is in a compressed state, the conductive elastic element is mounted on the movable block, and the movable end of the conductive elastic piece is located outside the slide rail.

[0013] Preferably, multiple sets of conductive elastic elements are provided, and the multiple sets of conductive elastic elements are distributed on the slide rail in the vertical direction. The slide rail can undergo elastic deformation under the compression of the conductive elastic elements.

[0014] Specifically, the clamp body is fitted with an insulating outer sleeve, which may be made of insulating material. The pull rod is sleeved inside the outer sleeve and has a portion extending out of the outer sleeve. A limiting ring is provided below the pull rod. When the movable block is in its original position, the limiting ring is in contact with the bottom of the outer sleeve; when the movable block is in the clamping position, the limiting ring is located below the bottom of the outer sleeve.

[0015] Preferably, the limiting ring has an electromagnet, and the bottom of the outer sleeve has a permanent magnet ring attracted to the electromagnet. When the movable block is in the clamping position, the movable block is squeezed by the elastic element, and at the same time, it is subjected to the upward force of the pull rod by the magnetic force between the electromagnet and the permanent magnet ring, thereby increasing the clamping force of the movable block and the clamp body on the cable and ensuring the stability of the cable fixation.

[0016] To further improve the stability of cable clamping, preferably, when the movable block is in its original position, the elastic element is in a compressed state, and the force exerted by the elastic element on the movable block at this time is greater than 50N.

[0017] Optionally, the elastic element is a spring, and the elastic element is sleeved on the outside of the pull rod, so that the pull rod guides the spring during its deformation process.

[0018] Preferably, the pull rod is made of insulating material.

[0019] The proposed high-efficiency grounding clamp for distribution network lines achieves conductive connection between the movable block and the clamp body through the connection of the movable block and the conductive spring, thereby ensuring the conductivity between the clamp and the cable; the setting of the pull rod and the elastic element facilitates the clamping or loosening of the cable; while ensuring connection stability, it shortens the connection time of the grounding clamp and improves work efficiency.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a cross-sectional view of the wire clamp body of the present invention;

[0023] Figure 3 This is a magnified view of a portion of area A of the present invention;

[0024] Figure 4 This is a preferred cross-sectional view of the wire clamp body in some embodiments of the present invention;

[0025] Figure 5 This is a cross-sectional view of the outer sleeve in some embodiments of the present invention;

[0026] In the diagram: 1. Wire clamp body; 10. Mounting groove; 11. Extension groove; 2. Movable block; 20. Slide groove; 3. Pull rod; 4. Elastic element; 5. Conductive spring; 50. Mounting part; 51. Movable end; 52. Conductive connecting piece; 6. Slide rail; 7. Conductive elastic element; 8. Outer sleeve; 9. Limiting ring; 12. Permanent magnet ring; 13. Electromagnet. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figure 1 - Figure 3 The diagram illustrates a high-efficiency operating grounding clamp for a power distribution network. It includes a clamp body 1 with an opening and a movable block 2 mounted on the clamp body 1. The distance between the movable block 2 and the top of the clamp body 1 is adjustable to clamp or release the cable. The clamp body 1 is conductive and has a connecting post for connection to a grounding wire. A pull rod 3, made of insulating material, is slidably mounted on the clamp body 1. The movable block 2 is mounted on top of the pull rod 3, located within the opening of the clamp body 1. The upper end of the pull rod 3 is connected to the movable block 2, and the lower end of the pull rod 3 is located outside the clamp body 1. The pull rod 3 moves the movable block 2 to change the distance between the movable block 2 and the top of the clamp body 1, thereby clamping or releasing the cable at the top of the clamp body 1 and the movable block 2. Specifically, to facilitate cable positioning, an arc-shaped groove is formed on the inner top of the clamp body 1 for cable positioning, preventing the cable from moving laterally relative to the clamp body 1 during clamping.

[0029] An elastic element 4 is provided between the movable block 2 and the wire clamp body 1. The movable block 2 has a clamping position and a home position. When the movable block 2 is in the clamping position, the movable block 2 separates from the top of the wire clamp body 1 and clamps the cable, and the elastic element 4 is in a compressed state; when the movable block 2 is in the home position, the movable block 2 is in contact with the wire clamp body 1. Preferably, the elastic element 4 is a spring, which is sleeved on the outside of the pull rod 3.

[0030] The movable block 2 can be installed on the pull rod 3 using bolts or other fasteners. Specifically, the pull rod 3 is slidably installed on the clamp body 1, and a spring is fitted over the part of the pull rod 3 that extends into the opening. The spring is compressed, and then the movable block 2 is placed on the top of the pull rod 3 and installed using bolts or other fasteners.

[0031] The movable block 2 has conductive properties. A conductive spring 5 is installed on the clamp body 1. When the movable block 2 is in the clamping position, the side of the movable block 2 abuts against the movable end 51 of the conductive spring 5, and the conductive spring 5 guides the movable block 2 during the lifting and lowering process.

[0032] like Figure 2 , Figure 3As shown, in this embodiment, the conductive spring 5 specifically includes a mounting portion 50 and a movable end 51. The mounting portion 51 can be fixed to the clamp body 1 by screws. The movable end 51 can deform relative to the mounting portion 50. When the movable block 2 is in the clamping position, the movable end 51 is squeezed and deformed. The movable end 51 of the conductive spring 5 and the mounting portion 50 are connected by a conductive connecting piece 52.

[0033] To facilitate the installation of the conductive elastic sheet 5, the clamp body 1 has an installation groove 10, and the side of the installation groove 10 has an extension groove 11. The installation part 51 and the conductive connecting piece 52 are T-shaped. The installation part 51 has a portion that extends to the extension groove 11. The installation part 51 has a portion located in the installation groove 10 and fixed to the clamp body 1 by screws or other locking devices. The extension groove 11 limits the installation part and increases the stability of the connection between the installation part 51 and the clamp body 1.

[0034] During operation: Pulling down the lever 3 compresses the elastic element 4, positioning the cable between the movable block 2 and the top of the clamp body 1. Then, the downward force applied to the lever 3 causes the movable block 2 to move upward and compress the cable under the elastic force of the elastic element 4. The movable block 2 presses against the movable end 51 of the conductive spring 5, ensuring that both the movable block 2 and the clamp body 1 are in contact with the cable. Simultaneously, the movable block 2 and the conductive spring 5 are pressed together, establishing a conductive connection between the movable block 2 and the clamp body 1, further increasing the stability of the grounding. When disassembly is required, the lever 3 is pulled vertically under external force, increasing the distance between the movable block 2 and the top of the clamp body 1, thereby allowing the cable to detach from the grounding clamp. Then, under the elastic force of the elastic element 4, the movable block 2 returns to its original position.

[0035] Experiments have shown that this technology can achieve rapid assembly and disassembly of the grounding clamp while ensuring a stable conductive grounding connection. According to statistics, the single connection time of this grounding clamp can be controlled within 3 minutes, which greatly improves work efficiency.

[0036] In some preferred embodiments, the elastic element 4 has conductive properties, with its upper end abutting against the movable block 2 and its lower end abutting against the wire clamp body 1, thereby enabling the movable block 2 to conduct electricity through the elastic element 4 and the wire clamp body 1.

[0037] Specifically, the movable block 2 has a groove 20 on its side, the movable end 51 of the conductive spring 5 has a portion located in the groove 20, and the side of the movable end 51 of the conductive spring 5 is in contact with the side of the groove 20.

[0038] like Figure 4In some embodiments shown, preferably, the side of the movable block 2 is slidably mounted on the clamp body 1. Optionally, in some technical solutions, the side of the groove 20 has a portion that is slidably connected to the clamp body 1, the conductive spring piece 5 is located within the groove 20, and the groove 20 has a portion that is slidably connected to the clamp body 1. Thus, both the conductive spring piece 5 and the clamp body 1 guide the sliding of the movable block 2, thereby ensuring the stability of the connection and simultaneously ensuring the conductive connection between the conductive spring piece 5 and the movable block 2.

[0039] like Figure 4 As shown, in some preferred embodiments, to ensure the conductive connection between the movable block 2 and the clamp body 1, a slide rail 6 is mounted on the side wall of the clamp body 1 via a conductive elastic element 7. The slide rail 6 has a conductive function, and the conductive elastic element 7 can undergo lateral elastic deformation. The groove 20 of the movable block 2 contacts the side of the slide rail 6. The conductive elastic element 7 is mounted on the movable block 2, and the movable end 51 of the conductive spring piece 5 is located outside the slide rail 6 and abuts against the slide rail 6. When the movable block 2 is pulled down, the conductive elastic element 7 is squeezed, thereby achieving tightness against the side of the movable block 2 and ensuring the stability of the cable clamping; at the same time, increasing the deformation of the movable end 51 of the conductive spring piece 5 ensures the stability of its contact with the slide rail 6 and ensures the conductive effect.

[0040] Preferably, the conductive elastic element 7 is provided in multiple sets, and the multiple sets of conductive elastic elements 7 are distributed vertically on the slide rail 6. When the movable block 2 moves downward, it directly squeezes different conductive elastic elements 7 to ensure that the slide rail 6 and the movable end 51 of the conductive spring 5 are pressed together, thereby increasing the service life of the conductive elastic element 7. The conductive elastic element 7 can be a conductive spring.

[0041] Preferably, the elastic modulus of the multiple sets of conductive elastic elements 7 gradually increases from top to bottom, and the thickness of the movable end 51 of the conductive spring sheet 5 gradually increases from top to bottom, thereby increasing the squeezing force on the conductive elastic element 7 during downward movement, which to a certain extent increases the stability of the cable clamping and ensures the grounding effect of the cable.

[0042] Specifically, an insulating outer sleeve 8 is installed on the clamp body 1, and the pull rod 3 is sleeved inside the outer sleeve 8 and has a portion extending out of the outer sleeve 8. A limiting ring 9 is provided below the pull rod 3. The limiting ring 9 limits the upward displacement of the pull rod 3 to prevent the pull rod 3 from sliding out of the outer sleeve 8. It should be noted that in order to prevent the pull rod 3 from rotating relative to the sleeve, the shape of the sliding connection part between the outer sleeve 8 and the pull rod 3 can be adjusted.

[0043] like Figure 5As shown, in some preferred embodiments, the limiting ring 9 has an electromagnet 13, and the bottom of the outer sleeve 8 has a permanent magnet ring 12 that attracts the electromagnet 13. This electromagnet ring can be a DC electromagnet ring. The limiting ring 9 is equipped with a battery that powers the electromagnet ring and a switch that controls the opening and closing of the electromagnet 13 (the installation of the electromagnet ring and the battery is a conventional setting and is not shown in the figure). Therefore, when the movable block 2 is in the clamping position, the electromagnet ring is opened, so that the permanent magnet on the outer sleeve 8 generates a relatively upward force on the electromagnet 13, thereby causing the pull rod 3 to squeeze the movable block 2, further increasing the stability of the movable block 2 and the wire clamp body 1 in clamping the cable.

[0044] Preferably, when the movable block 2 is in the original position, the elastic element 4 is in a compressed state, and preferably, the force exerted by the elastic element 4 on the movable block 2 is greater than 50N, thereby ensuring that when the movable block 2 is in the clamping position, the elastic element 4 is further squeezed to ensure the stability of the movable block 2 and the clamp body 1 in clamping the cable.

[0045] It should be understood that the terms "horizontal," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0046] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-efficiency operating grounding clamp for a distribution network line, comprising a clamp body (1) with an opening and a movable block (2) mounted on the clamp body (1), wherein the distance from the movable block (2) to the top of the clamp body (1) is adjustable to clamp or release a cable, characterized in that, A pull rod (3) is slidably mounted on the clamp body (1). The upper end of the pull rod (3) is connected to the movable block (2). The pull rod (3) drives the movable block (2) to move so as to change the distance between the movable block (2) and the top of the clamp body (1). The movable block (2) has a clamping station and a home station; when the movable block (2) is in the clamping station, the movable block (2) separates from the top of the wire clamp body (1) and clamps the cable, and the elastic element (4) is in a compressed state; when the movable block (2) is in the home station, the movable block (2) contacts the wire clamp body (1). The movable block (2) has conductive properties. A conductive spring (5) is installed on the clamp body (1). When the movable block (2) is in the clamping position, the side of the movable block (2) abuts against the movable end (51) of the conductive spring (5), and the conductive spring (5) guides the movable block (2) during the lifting and lowering process.

2. The high-efficiency operating grounding clamp for distribution network lines according to claim 1, characterized in that, The elastic element (4) has conductive properties so that the movable block (2) is electrically connected to the clamp body (1) through the elastic element (4).

3. The high-efficiency operating grounding clamp for distribution network lines according to claim 1, characterized in that, The movable block (2) has a groove (20) on its side, and the movable end (51) of the conductive spring (5) has a portion located in the groove (20), and the side of the movable end (51) of the conductive spring (5) is in contact with the side of the groove (20).

4. The high-efficiency operating grounding clamp for distribution network lines according to claim 1, characterized in that, When the movable block (2) is in its original position, the elastic element (4) is in a compressed state.

5. The high-efficiency operating grounding clamp for distribution network lines according to any one of claims 1-4, characterized in that, The side of the movable block (2) is slidably mounted on the clamp body (1).

6. The high-efficiency operating grounding clamp for distribution network lines according to claim 5, characterized in that, The side of the clamp body (1) is fitted with a conductive slide rail (6) via a conductive elastic element (7). The movable end (51) of the conductive spring piece (5) is located outside the slide rail (6) and has a portion that contacts the slide rail (6).

7. The high-efficiency operating grounding clamp for distribution network lines according to claim 6, characterized in that, The conductive elastic element (7) is provided in multiple sets, and the multiple sets of the conductive elastic element (7) are distributed in the vertical direction on the slide rail (6).

8. The high-efficiency operating grounding clamp for distribution network lines according to claim 7, characterized in that, The elastic modulus of the multiple sets of conductive elastic elements (7) gradually increases from top to bottom, and the thickness of the movable end (51) of the conductive elastic piece (5) gradually increases from top to bottom.

9. The high-efficiency operating grounding clamp for distribution network lines according to claim 1, characterized in that, An insulating outer sleeve (8) is installed on the clamp body (1). The pull rod (3) is sleeved inside the outer sleeve (8) and has a portion extending out of the outer sleeve (8). A limiting ring (9) is provided below the pull rod (3). When the movable block (2) is in the original position, the limiting ring (9) contacts the bottom of the outer sleeve (8).

10. The high-efficiency operating grounding clamp for distribution network lines according to claim 9, characterized in that, The limiting ring (9) has an electromagnet (13), and the bottom of the outer sleeve (8) has a permanent magnet ring (12) that attracts the electromagnet (13). When the movable block (2) is in the clamping position, the electromagnet (13) is energized.

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