Connecting assembly for short-circuit grounding wire and short-circuit grounding device having the same

Abstract

The present invention proposes a connection assembly for a short-circuit grounding wire and a short-circuit grounding device having the same, comprising a plug-in rod and a sleeve, wherein the first end of the plug-in rod is used to connect the grounding wire, the second end of the plug-in rod is a free end, a plurality of positioning blocks are circumferentially arranged on the outer circumference of the plug-in rod, the sleeve is provided with a cylindrical inner cavity, the second end of the sleeve is used for fixed connection with a grounding body, the first end of the sleeve is provided with a circular hole for inserting the plug-in rod, the circular hole is coaxially arranged with the cylindrical inner cavity, the inner hole wall of the circular hole is provided with a plurality of avoidance openings for the positioning blocks to pass through along the circumferential direction, the inner cavity wall of the first end of the cylindrical inner cavity is provided with a plurality of positioning grooves for accommodating the positioning blocks, one or more conductive brushes are provided along the circumferential direction on the inner side of the cylindrical hollow structure, the inner cavity wall of the second end of the cylindrical inner cavity is provided with a spring, and the spring is connected to a limit plate. The present invention can enable the grounding wire to be quickly connected to the grounding body, and can increase the contact area between the grounding wire and the grounding body to improve the conductivity between the grounding wire and the grounding body.

Description

Technical Field

[0001] The invention relates to the technical field of electric power maintenance equipment, and in particular to a connection assembly for a short-circuit grounding wire and a short-circuit grounding device having the same. Background Art

[0002] Short-circuit grounding wire is used in line and substation construction to prevent electrostatic induction of nearby charged objects and ensure safety when closing the switch by mistake. Short-circuit grounding wire is a safety barrier to protect maintenance personnel and the lifeline of power employees, which can prevent sudden power outages from harming the human body.

[0003] In the prior art, a connection terminal connected to a grounding wire is generally fixed to a wire connection block connected to a grounding body by bolts. During the disassembly or installation process, operating tools such as wrenches are required, resulting in a slower connection. Moreover, after multiple disassembly or installation, the bolts are prone to thread slippage and failure, affecting the fixing effect. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a connection assembly for a short-circuit grounding wire and a short-circuit grounding device having the same.

[0005] The present invention provides a connection assembly for a short-circuit grounding wire, comprising a plug-in rod and a sleeve, wherein the first end of the plug-in rod is used to connect the grounding wire, the second end of the plug-in rod is a free end, and a plurality of positioning blocks are arranged on the outer peripheral side of the plug-in rod along the circumferential direction;

[0006] The sleeve is provided with a cylindrical inner cavity, the second end of the sleeve is used for fixed connection with the grounding body, the first end of the sleeve is provided with a circular hole for inserting the second end of the plug rod into the cylindrical inner cavity, the circular hole is coaxially arranged with the cylindrical inner cavity, the inner hole wall of the circular hole is provided with a plurality of avoidance openings for the positioning blocks to pass through along the circumferential direction, and the plurality of positioning blocks correspond to the plurality of avoidance openings one by one;

[0007] The inner cavity wall of the first end of the cylindrical inner cavity is provided with a plurality of positioning grooves located on the circumference of the circular hole and extending radially, the positioning grooves are used to accommodate positioning blocks, and the plurality of positioning blocks correspond to the plurality of accommodating grooves one by one;

[0008] One or more conductive brushes are arranged along the circumferential direction on the inner side of the cylindrical hollow structure, and the conductive brushes are used to flexibly contact with the surface of the plug rod;

[0009] A spring is arranged on the middle of the inner cavity wall at the second end of the cylindrical inner cavity, and one end of the spring away from the inner cavity wall at the second end of the cylindrical inner cavity is connected to a limiting plate, which is used to push the second end of the plug rod to make the positioning block fit with the positioning groove.

[0010] Preferably, the conductive brush comprises a conductive block and a conductive brush head, the conductive block is fixedly connected to the peripheral wall of the cylindrical inner cavity, one end of the conductive brush filament is fixedly connected to the conductive block, and the other end is bent to both sides to form a T-shaped brush head.

[0011] Preferably, a curved surface matching the plug-in rod is provided at the contact point between the T-shaped brush head and the plug-in rod.

[0012] Preferably, a receiving groove matching the second end of the plug rod is formed on a side of the limiting plate away from the spring.

[0013] Preferably, the circular hole and the plug-in rod are clearance matched, the positioning block and the avoidance opening are clearance matched, and the positioning groove and the positioning block are clearance matched.

[0014] The present invention further provides a short-circuit grounding device, comprising any one of the connection components for a short-circuit grounding wire as described above.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The grounding wire and the grounding body are quickly connected by the plug-in rod and the sleeve, and there is no need to use a wrench to remove or install the bolt every time.

[0017] (2) Since the conductive brush wire of the conductive brush can be elastically deformed, the conductive brush can always maintain flexible contact with the surface of the plug-in rod during the plug-in process of the plug-in rod, without the need for additional adjustment parts, thereby increasing the contact area between the sleeve and the plug-in rod, thereby increasing the contact area between the grounding wire and the grounding body to improve the conductivity between the grounding wire and the grounding body and avoid accidents.

[0018] (3) The conductive brush plays an auxiliary positioning role on the plug-in rod. The cooperation of the conductive brush, the limit plate and the spring can ensure a stable connection between the plug-in rod and the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic structural diagram of a connection assembly for a short-circuit grounding wire.

[0020] Figure 2 It is a schematic top view of the sleeve in the present invention.

[0021] Figure 3 for Figure 1 AA section diagram.

[0022] Description of reference numerals:

[0023] 1-connector rod 2-sleeve 3-conductive brush 31-conductive seat 32-conductive brush wire

[0024] 4-spring 5-limit plate 6-positioning block 7-grounding wire 8-grounding body DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other; the present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] Reference Figures 1 to 3 The present invention provides a connection assembly for a short-circuit grounding wire, comprising a plug-in rod 1 and a sleeve 2, wherein the first end of the plug-in rod 1 is used to connect the grounding wire, the second end of the plug-in rod 1 is a free end, and a plurality of positioning blocks are provided along the circumferential direction on the outer peripheral side of the plug-in rod 1;

[0027] The sleeve 2 is provided with a cylindrical inner cavity, the second end of the sleeve 2 is used for fixed connection with the grounding body, the first end of the sleeve 2 is provided with a circular hole for inserting the second end of the plug rod 1 into the cylindrical inner cavity, the circular hole is coaxially arranged with the cylindrical inner cavity, and the inner hole wall of the circular hole is provided with a plurality of avoidance openings for the positioning block 6 to pass through along the circumferential direction, and the plurality of positioning blocks 6 correspond to the plurality of avoidance openings one by one;

[0028] The inner cavity wall of the first end of the cylindrical inner cavity is provided with a plurality of positioning grooves located on the circumferential side of the circular hole and extending radially, the positioning grooves are used to accommodate the positioning blocks 6, the plurality of positioning blocks 6 correspond to the plurality of accommodating grooves one by one, and one or more conductive brushes 3 are provided along the circumferential direction on the inner side of the cylindrical hollow structure, the conductive brushes 3 are used to flexibly contact with the surface of the plug rod 1;

[0029] A spring 4 is provided on the middle of the inner wall of the second end of the cylindrical inner cavity. The end of the spring 4 away from the inner wall of the second end of the cylindrical inner cavity is connected to a limit plate 5. The limit plate 5 is used to push the second end of the plug rod 1 to make the positioning block 6 fit the positioning groove.

[0030] When the present invention is in use, the first end of the plug rod 1 is connected to the grounding wire 7, the sleeve 2 is fixedly connected to the grounding body 8, the second end of the plug rod 1 is inserted into the cylindrical inner cavity through the round hole until it contacts the limit plate 5, and pressure is continued to be applied to the plug rod 1 so that the second end of the plug rod 1 applies pressure to the limit plate 5, thereby compressing the spring 4 and allowing the positioning block 6 to enter the cylindrical inner cavity through the corresponding avoidance opening, the plug rod 1 is rotated to allow the positioning block 6 to rotate into the corresponding positioning groove, and the hand is released. The limit plate 5 abuts against the second end of the plug rod 1 under the resetting action of the spring 4, so that the positioning block 6 on the plug rod 1 is tightly attached to the positioning groove, and the conductive brush 3 is in flexible contact with the surface of the plug rod 1.

[0031] In the present invention, the grounding wire 7 and the grounding body 8 can be quickly connected by quickly connecting the plug rod 1 and the sleeve 2, and there is no need to use a wrench to remove or install the bolts each time; and because the conductive brush filaments 32 of the conductive brush 3 can be elastically deformed, the conductive brush 3 can always maintain flexible contact with the surface of the plug rod 1 during the plugging process of the plug rod 1, which can increase the contact area between the sleeve 2 and the plug rod 1, thereby increasing the contact area between the grounding wire 7 and the grounding body 8, thereby improving the conductivity between the grounding wire 7 and the grounding body 8, and avoiding accidents; and the conductive brush 3 plays an auxiliary positioning role for the plug rod 1, and the cooperation of the conductive brush 3, the limit plate 5, and the spring 4 can make the plug rod 1 and the sleeve 2 connected firmly.

[0032] In order to increase the contact area between the grounding wire 7 and the grounding body 8, in a specific embodiment, the conductive brush 3 includes a conductive seat 31 and a conductive brush filament 32. The conductive seat 31 is fixedly connected to the peripheral wall of the cylindrical inner cavity. One end of the conductive brush filament 32 is fixedly connected to the conductive seat 31, and the other end is bent to both sides to form a T-shaped brush head. The point contact between the conductive brush filament 32 and the plug rod 1 is converted into a line contact by the T-shaped brush head, which can effectively increase the contact area between the plug rod 1 and the conductive brush filament 32, thereby increasing the contact area between the grounding wire 7 and the grounding body 8, and improving the conductive performance of the connection component.

[0033] In actual use, the conductive brush filaments 32 can be bent to two opposite sides, such as upper and lower sides or left and right sides.

[0034] In order to further increase the contact area between the grounding wire 7 and the grounding body 8, in a further specific embodiment, a curved surface matching the plug rod 1 is provided at the contact point between the T-shaped brush head and the plug rod 1. By providing the curved surface, the contact form between the conductive brush filament 32 and the plug rod 1 can be changed to surface contact, further improving the conductive performance of the connection assembly.

[0035] In order to further avoid the instability of the plugging caused by the position deviation of the plugging rod 1, in the specific embodiment, a receiving groove matching the second end of the plugging rod 1 is opened on the side of the limit plate 5 away from the spring 4. Under the thrust of the spring 4, the limit plate 5 makes the receiving groove of the limit plate 5 closely contact with the plugging rod 1, thereby pushing the plugging rod 1 so that the positioning block 6 on the plugging rod 1 fits closely with the positioning groove, so that the conductive brush 3 is in close contact with the plugging rod 1, thereby ensuring the stability of the connection between the plugging rod 1 and the sleeve 2 and the contact area between the grounding wire 7 and the grounding body 8, and improving the conductive performance of the connection assembly.

[0036] In order to ensure that the plug-in rod 1 is plugged accurately and does not shake randomly, in a specific implementation manner, the round hole and the plug-in rod 1 have a clearance fit, the positioning block 6 and the avoidance opening have a clearance fit, and the positioning groove and the positioning block 6 have a clearance fit.

[0037] In actual use, the sleeve 2 and the plug rod 1 are both made of conductive materials, such as metal.

[0038] The present invention also provides a short-circuit grounding device, comprising any one of the connection components described above for the short-circuit grounding wire 7. The short-circuit grounding device can quickly connect the grounding wire 7 to the grounding body 8, and at the same time increase the connection area between the grounding wire 7 and the grounding body 8, thereby improving the conductive performance of the short-circuit grounding device.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A connection assembly for short-circuit grounding, characterized in that: It comprises a plug rod (1) and a sleeve (2), wherein the first end of the plug rod (1) is used to connect a grounding wire, the second end of the plug rod (1) is a free end, and a plurality of positioning blocks (6) are provided along the circumferential direction on the outer peripheral side of the plug rod (1); The sleeve (2) is provided with a cylindrical inner cavity, the second end of the sleeve (2) is used for fixed connection with the grounding body, the first end of the sleeve (2) is provided with a circular hole for inserting the second end of the plug rod (1) into the cylindrical inner cavity, the circular hole is coaxially arranged with the cylindrical inner cavity, the inner hole wall of the circular hole is provided with a plurality of avoidance openings for the positioning block (6) to pass through along the circumferential direction, and the plurality of positioning blocks (6) correspond to the plurality of avoidance openings one by one; The inner cavity wall of the first end of the cylindrical inner cavity is provided with a plurality of positioning grooves located on the circumferential side of the circular hole and extending radially, the positioning grooves are used to accommodate positioning blocks (6), the plurality of positioning blocks (6) correspond one to one with the plurality of accommodating grooves, one or more conductive brushes (3) are provided along the circumferential direction on the inner side of the cylindrical hollow structure, the conductive brushes (3) are used to flexibly contact with the surface of the plug rod (1); A spring (4) is provided on the middle of the inner cavity wall at the second end of the cylindrical inner cavity, and one end of the spring (4) away from the inner cavity wall at the second end of the cylindrical inner cavity is connected to a limiting plate (5), and the limiting plate (5) is used to push the second end of the plug rod (1) so that the positioning block (6) fits into the positioning groove; The conductive brush (3) comprises a conductive seat (31) and conductive brush filaments (32); the conductive seat (31) is fixedly connected to the peripheral wall of the cylindrical inner cavity; one end of the conductive brush filaments (32) is fixedly connected to the conductive seat (31), and the other end is bent to both sides to form a T-shaped brush head; A receiving groove matching the second end of the plug rod (1) is provided on a side of the limiting plate (5) away from the spring (4).

2. The connection assembly for a short-circuit grounding wire according to claim 1, characterized in that: The contact point between the T-shaped brush head and the plug-in rod (1) is provided with an arc-shaped surface matching the plug-in rod (1).

3. The connection assembly for a short-circuit grounding wire according to claim 1, characterized in that: The circular hole and the plug-in rod (1) are clearance matched, the positioning block (6) and the avoidance opening are clearance matched, and the positioning groove and the positioning block (6) are clearance matched.

4. A short-circuit grounding device, characterized in that: It comprises any one of the connection components for short-circuiting a ground wire as described in claims 1 to 3 above.

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