Special combined grounding wire for ring main unit

Abstract

The utility model discloses a special combined grounding wire for a ring main unit, and relates to the technical field of grounding wires. The two ends of the bottom of the extension cylinder extend downwards to form extension strips, the interior of the extension cylinder is slidably connected with a second extension cylinder, and the bottom of the second extension cylinder extends to form a second extension strip. The position of a clamping hole formed in the surface of a second extending cylinder clamped to a protrusion at the top of the pressing piece can be adjusted through the elastic effect of a spring, and the second extending cylinder is fixed into the belt through a limiting plate fixedly connected with a second extending strip at the bottom. As the rotating shafts arranged at the two ends of the rotating wheel are fixedly connected with the extension strips, the extension cylinders fixedly connected with the tops of the extension strips can be driven to extend to the outside of the outer cylinder, and the length of the ring main unit can be adjusted according to the positions of components in the ring main unit and the specification of the ring main unit when the grounding wire is installed in the ring main unit. Therefore, the device can adapt to the installation of grounding wires under various conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of grounding wires, in particular to a special combined grounding wire for a ring network cabinet. Background Art

[0002] The grounding wire is a wire directly connected to the earth, also known as a safety return line. When in danger, it transfers high voltage directly to the earth, which is considered a lifeline. The grounding wire connected to the ring main unit is a special equipment-type grounding wire that can release the internal charge of the equipment to the earth to form a short-circuit safety protection mode. During the installation process of the existing ring main unit grounding wire, due to the different positions of the components inside the ring main unit, there is a problem with the length of the grounding rod when the grounding wire is installed in the ring main unit, which affects the fixation of the grounding wire in the ring main unit. It is usually necessary to carry grounding rods of different specifications to connect with the grounding wire, and use grounding rods of different specifications for different ring main units, which makes it inconvenient to carry the grounding rods when multiple ring main unit grounding wires are installed at the same time. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides a special combined grounding wire for ring network cabinets, which solves the problem of the length of the grounding rod when the grounding wire is installed in the ring network cabinet, affecting the fixation of the grounding wire in the ring network cabinet. It is usually necessary to carry grounding rods of different specifications to connect the grounding wire. Different specifications of grounding rods are used for different ring network cabinets, resulting in the problem of inconvenience in carrying the grounding rods when multiple ring network cabinet grounding wires are installed at the same time.

[0004] To achieve the above purpose, the utility model is implemented by the following technical solutions: a special combined grounding wire for a ring network cabinet. It includes a grounding wire assembly, the bottom of which is fixedly connected to a telescopic assembly, the telescopic assembly includes an outer cylinder, the inner part of which is slidably connected to an extension cylinder, the bottom ends of the extension cylinder have extension strips extending downward, the two ends of the extension strip have protruding shafts, the middle part of the shaft is movably connected to a rotating wheel, the outer part of the rotating wheel is sleeved with a belt, the inner part of the extension cylinder is slidably connected to a second extension cylinder, the bottom of the second extension cylinder has a second extension strip extending, the bottom of the second extension strip is fixedly connected to a limit plate, and the middle part of the limit plate has protruding.

[0005] Preferably, the grounding wire assembly includes a wire clamp, a fixing piece is provided through one end of the wire clamp, a connecting rod is fixedly connected to one end of the bottom of the wire clamp, a grounding wire is fixedly connected to the other end of the bottom of the wire clamp, one end of the grounding wire is fixedly connected to the connecting piece, the top of the connecting piece is fixedly connected to the grounding clamp, and a fixing piece is provided through one end of the grounding clamp.

[0006] Preferably, the connecting rod is fixedly connected to the top of the second extension tube.

[0007] Preferably, a clamping block protrudes inwardly from the top of the outer tube, and a second clamping block protrudes outwardly from the bottom of the extension tube, and the second clamping block is clamped at the bottom of the clamping block.

[0008] Preferably, the inner wall of the outer cylinder is fixedly connected with a limiting groove, and the limiting groove is sleeved on the outside of the belt.

[0009] Preferably, the limiting plate is fixedly connected to the inner side of the belt via a second extension strip, which passes through the inside of the belt.

[0010] Preferably, a plurality of snap-in holes are provided at the upper end of the extension tube.

[0011] Preferably, a connecting groove is provided on one side of the top of the extension tube, a rotating shaft is provided in the middle of the connecting groove and a pressing piece is sleeved on the outside of the rotating shaft, a connecting hole is provided at the connection between the pressing piece and the rotating shaft, one end of the bottom of the pressing piece protrudes downward and is clamped in the inside of the clamping hole, and the other end of the bottom of the pressing piece is fixedly connected to a spring.

[0012] The utility model provides a special combined grounding wire for a ring network cabinet. Compared with the prior art, it has the following beneficial effects:

[0013] 1. A special combined grounding wire for the ring network cabinet can adjust the position of the clamping hole opened on the surface of the second extension tube that is clamped by the top protrusion of the pressing piece by the elastic force of the spring through the pressing piece arranged inside the connection groove. The second extension tube is fixed to the inside of the belt through a limit plate fixedly connected to the second extension bar at the bottom, and drives the belt to rotate on the outside of the rotating wheel. Since the rotating shafts arranged at both ends of the rotating wheel are fixedly connected with the extension bar, the extension tube fixedly connected to the top of the extension bar can be driven to extend to the outside of the outer tube. When installing the grounding wire inside the ring network cabinet, its length can be adjusted according to the position of the components inside the ring network cabinet and the specifications of the ring network cabinet, so that it can adapt to the installation of grounding wires in various situations.

[0014] 2. The special combined grounding wire of the ring network cabinet can limit the telescopic length of the extension tube through the limit groove fixedly connected on the inner wall of the outer tube and the block protruding inward from the top of the outer tube. The second block is clamped inside the block to prevent the extension tube from extending outward more than the length of the outer tube. Since the middle part of the limit plate is fixedly connected to the inside of the belt, when the second extension tube extends toward the outside of the extension tube, the belt and the extension tube fixed on the top of the extension strip are driven to slide toward the outside of the outer tube, so that a secondary extension can be performed, making the extension length longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the telescopic assembly structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the local structure of the telescopic component of the utility model.

[0019] In the figure: 1. grounding wire assembly; 2. telescopic assembly; 11. wire clamp; 12. connecting rod; 13. fixing piece; 14. grounding wire; 15. East second fixing piece; 16. grounding clamp; 17. connecting piece; 21. outer cylinder; 210. clamping block; 22. extension cylinder; 220. second clamping block; 221. extension strip; 222. connecting groove; 223. spring; 224. pressing piece; 225. connecting hole; 23. second extension cylinder; 230. second extension strip; 231. clamping hole; 24. belt; 25. rotating wheel; 26. rotating shaft; 27. limiting plate; 28. limiting groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a combined grounding wire for a ring network cabinet. The utility model comprises a grounding wire assembly 1, a telescopic assembly 2 is fixedly connected to the bottom of the grounding wire assembly 1, the telescopic assembly 2 comprises an outer cylinder 21, an extension cylinder 22 is slidably connected inside the outer cylinder 21, extension bars 221 extend downwardly from both ends of the bottom of the extension cylinder 22, a rotating shaft 26 is protruded at both ends of the extension bar 221, a rotating wheel 25 is movably connected to the middle of the rotating shaft 26, a belt 24 is sleeved on the outside of the rotating wheel 25, a second extension cylinder 23 is slidably connected to the inside of the extension cylinder 22, a second extension bar 230 extends from the bottom of the second extension cylinder 23, a limiting plate 27 is fixedly connected to the bottom of the second extension bar 230, a limiting plate 27 is protruded in the middle of the limiting plate 27, and 270 is fixed inside the belt 24, so that when the second extension cylinder 23 extends to the outside of the extension cylinder 22, the belt 24 can be driven to rotate outside the rotating wheel 25, and the rotating shaft 26 can extend to the outside of the extension cylinder 22 under the fixing action of the extension bar 221.

[0022] See also Figure 1The grounding wire assembly 1 includes a wire clamp 11, one end of which is penetrated by a fixing piece 13, the fixing piece 13 is used to fix the wire clamp 11 to the outside of the metal body inside the ring network cabinet, one end of the bottom of the wire clamp 11 is fixedly connected to a connecting rod 12, the other end of the bottom of the wire clamp 11 is fixedly connected to a grounding wire 14, one end of the grounding wire 14 is fixedly connected to a connecting piece 17, the top of the connecting piece 17 is fixedly connected to a grounding clamp 16, one end of the grounding clamp 16 is penetrated by a fixing piece 15, and the grounding clamp 16 is used to be connected to the outside for grounding.

[0023] See also Figure 1-4 The connecting rod 12 is fixedly connected to the top of the second extension tube 23, the top of the outer tube 21 protrudes inward with a block 210, and the bottom of the extension tube 22 protrudes outward with a second block 220, the second block 220 is clamped at the bottom of the block 210, and the second block 220 can prevent the extension tube 22 from escaping from the inside of the outer tube 21 under the blocking effect of the block 210. The inner wall of the outer tube 21 is fixedly connected to the limiting groove 28, and the limiting groove 28 is sleeved on the outside of the belt 24. The limiting groove 28 is used to limit the distance that the extension strip 221 can drive the extension tube 22 to extend out of the outer tube 21. The limiting plate 27 is fixedly connected to the inner side of the belt 24 through the second extension strip 230, and 270 runs through the inside of the belt 24. The extension tube 2 2 is provided with a plurality of snap-in holes 231 at the upper end, a connecting groove 222 is provided on one side of the top of the extension tube 22, a connecting shaft is provided in the middle of the connecting groove 222 and a pressing piece 224 is sleeved on the outside of the connecting shaft, a connecting hole 225 is provided at the connection between the pressing piece 224 and the connecting shaft, one end of the bottom of the pressing piece 224 protrudes downward and is snap-fitted into the inside of the snap-in hole 231, and the other end of the bottom of the pressing piece 224 is fixedly connected with a spring 223, and the pressing piece 224 is pressed downward with one end of the spring 223 provided thereon, so that the other end of the pressing piece 224 can be protruded out of the inside of the snap-in hole 231 under the contraction action of the spring 223, so that the second extension tube 23 and the extension tube 22 can slide and extend in the inner cavity of the outer tube 21.

[0024] During use, when the length of the grounding rod needs to be extended, first press the pressing piece 224 provided inside the connecting groove 222. Due to the elastic force of the spring 223, the position of the clamping hole 231 opened on the surface of the second extension tube 23, which is clamped by the top protrusion of the pressing piece 224, can be adjusted. The second extension tube 23 is fixed to the inside of the belt 24 through the limit plate 27 fixedly connected to the second extension bar 230 at the bottom, driving the belt 24 to rotate outside the rotating wheel 25. At the same time, since the rotating shafts 26 provided at both ends of the rotating wheel 25 are fixedly connected with the extension bar 221, the extension tube 22 fixedly connected to the top of the extension bar 221 can be driven to extend to the outside of the outer tube 21. When the extension tube 22 is extended to the outside of the outer tube 21, While the outer tube 21 is extending outward and the second extension tube 23 is extending toward the outside of the extension tube 22, the limiting groove 28 fixedly connected on the inner cavity wall of the outer tube 21 and the block 210 protruding inwardly from the top of the outer tube 21 can limit the telescopic length of the extension tube 22, and the second block 220 is clamped inside the block 210 to prevent the extension distance of the extension tube 22 from being greater than the length of the outer tube 21. Since the middle part 270 of the limiting plate 27 is fixedly connected to the inside of the belt 24, when the second extension tube 23 is extended toward the outside of the extension tube 22, the belt 24 and the extension tube 22 fixed on the top of the extension strip 221 are driven to slide toward the outside of the outer tube 21, and the grounding rod can perform a secondary extension.

[0025] In this embodiment, the special combined grounding wire of the ring main unit, among the above-mentioned components, its own structural features and working principles all adopt the existing technology and will not be described in detail here.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special combined grounding wire for a ring main unit, comprising a grounding wire assembly (1), characterized in that: A telescopic assembly (2) is fixedly connected to the bottom of the grounding wire assembly (1); The telescopic assembly (2) comprises an outer cylinder (21), the inner part of the outer cylinder (21) is slidably connected to an extension cylinder (22), the bottom ends of the extension cylinder (22) are downwardly extended with extension strips (221), the two ends of the extension strip (221) are protruded with rotating shafts (26), the middle part of the rotating shaft (26) is movably connected to a rotating wheel (25), the outer part of the rotating wheel (25) is sleeved with a belt (24), the inner part of the extension cylinder (22) is slidably connected to a second extension cylinder (23), the bottom of the second extension cylinder (23) is extended with a second extension strip (230), the bottom of the second extension strip (230) is fixedly connected to a limiting plate (27), and the middle part of the limiting plate (27) is protruded with (270); The grounding wire assembly (1) comprises a wire clamp (11), one end of the wire clamp (11) is penetrated by a fixing piece (13), one end of the bottom of the wire clamp (11) is fixedly connected to a connecting rod (12), the other end of the bottom of the wire clamp (11) is fixedly connected to a grounding wire (14), one end of the grounding wire (14) is fixedly connected to a connecting piece (17), the top of the connecting piece (17) is fixedly connected to a grounding clamp (16), and one end of the grounding clamp (16) is penetrated by a fixing piece (15).

2. The special combined grounding wire for ring main unit according to claim 1, characterized in that: The connecting rod (12) is fixedly connected to the top of the second extension tube (23).

3. The special combined grounding wire for ring main unit according to claim 1, characterized in that: A clamping block (210) protrudes inwardly from the top of the outer tube (21), and a second clamping block (220) protrudes outwardly from the bottom of the extension tube (22), and the second clamping block (220) is clamped on the bottom of the clamping block (210).

4. The special combined grounding wire for ring main unit according to claim 3, characterized in that: The inner wall of the outer cylinder (21) is fixedly connected to a limiting groove (28), and the limiting groove (28) is sleeved on the outside of the belt (24).

5. The special combined grounding wire for ring main unit according to claim 1, characterized in that: The limiting plate (27) is fixedly connected to the inner side of the belt (24) via a second extension strip (230), and the (270) passes through the inside of the belt (24).

6. The special combined grounding wire for ring main unit according to claim 3, characterized in that: The upper end of the extension tube (22) is provided with a plurality of clamping holes (231).

7. The special combined grounding wire for ring main unit according to claim 6, characterized in that: A connecting groove (222) is provided on one side of the top of the extension tube (22), a rotating shaft is provided in the middle of the connecting groove (222), and a pressing piece (224) is sleeved on the outside of the rotating shaft, a connecting hole (225) is provided at the connection between the pressing piece (224) and the rotating shaft, one end of the bottom of the pressing piece (224) protrudes downward and is clamped in the inside of the clamping hole (231), and the other end of the bottom of the pressing piece (224) is fixedly connected to a spring (223).

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