Rapid grounding device for flexible contact network

Abstract

The utility model discloses a rapid grounding device for a flexible contact network. The rapid grounding device comprises a main frame, a first contact block, a second contact block and a locking piece, mounting structures are arranged at two ends of the main frame; the first contact block is movably arranged at the upper end of the main frame; the second contact block is movably arranged at the lower end of the main frame, the second contact block and the first contact block are oppositely arranged to form a clamping space for accommodating the contact net, and a first spring for pushing the second contact block to the contact net and keeping a pressing state is arranged at the lower end of the main frame; the locking piece is movably arranged on the main frame and is in linkage with the first contact block, and the second end of the locking piece locks the second contact block. The beneficial effect is that the device is used in cooperation with an insulating telescopic rod. The locking piece can be unlocked and the second contact block can be released only by pulling the insulating telescopic rod, and finally electrical connection of the contact network is completed. And when the use is finished, the second contact block can be locked and the contact net can be released only by pushing the insulating telescopic rod. And convenience and rapidness are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrician's tools, in particular to a flexible contact net quick grounding device. BACKGROUND

[0002] In some live working, especially in the operation of track contact net, the contact net needs to be grounded, in order to realize this operation, there are grounding devices such as conductive chuck in the prior art, these need to rotate the operating rod for a long time to complete the clamping operation in operation, the grounding device is too cumbersome to operate, and it is time-consuming and laborious to disassemble and ground. The existing mode tightens the contact net by screwing, which is easy to damage or extrude the contact line body. SUMMARY

[0003] In view of the defects in the prior art, the utility model provides a flexible contact net quick grounding device, which can more conveniently and reliably complete grounding operation and be removed very conveniently.

[0004] The utility model provides a technical scheme, which is a flexible contact net quick grounding device, comprising:

[0005] A main frame is provided with a mounting structure at both ends;

[0006] A first contact block is movably arranged at the upper end of the main frame;

[0007] A second contact block is movably arranged at the lower end of the main frame, the second contact block is arranged opposite to the first contact block to form a clamping space for accommodating the contact net, and the lower end of the main frame is provided with a first spring for pushing the second contact block towards the contact net and keeping the contact net in a pressed state;

[0008] A locking piece is movably arranged on the main frame and linked with the first contact block, the first end of the locking piece is connected with the main frame, the second end of the locking piece is connected with the second contact block to lock the second contact block, when the first contact block moves away from the second contact block, the second end of the locking piece is separated from the second contact block to realize unlocking, and the upper end of the main frame is provided with a second spring for pushing the first contact block to reset and drive the locking piece to reset to a locking position.

[0009] The above technical scheme has the following beneficial effects: in use, the insulating telescopic rod is used in cooperation. Only the insulating telescopic rod needs to be pulled to press the first contact block, so that the locking piece is unlocked and the second contact block is released, and finally the electrical connection of the contact net is completed. When use is finished, only the insulating telescopic rod needs to be pulled to lock the second contact block and release the contact net. The use is convenient and fast.

[0010] Further, the mounting structure comprises an upper mounting segment and a lower mounting segment extending in the same direction from two ends of the main frame.

[0011] Further, a first through hole is formed in the upper mounting segment, a first shaft body is connected to the upper end of the first contact block, the first shaft body extends out of the first through hole, and the second spring is sleeved on the first shaft body.

[0012] Further, a second through hole is formed in the lower mounting segment, a second shaft body is connected to the lower end of the second contact block, the second shaft body extends out of the second through hole, and the first spring is sleeved on the second shaft body.

[0013] Further, the locking piece is in an inverted J shape, a first end of the locking piece is hinged to the outer end of the upper mounting segment, the top of the locking piece is connected to the first shaft body, a second end of the locking piece is provided with a ratchet, and a fixed tooth is arranged at one end of the second contact block connected to the ratchet, the second contact block can only move in one direction away from the first contact block when the ratchet and the fixed tooth are engaged.

[0014] Further, a window is formed in the side wall of the main frame for the locking piece to connect to the second contact block.

[0015] Further, a Y-shaped joint is fixedly connected to the top end of the first shaft body, a notch is arranged at the top end of the Y-shaped joint for the locking piece to extend into, a pin shaft is arranged in the notch, a strip-shaped hole is formed in the locking piece at a position corresponding to the pin shaft, and the pin shaft passes through the strip-shaped hole.

[0016] Further, a shaft sleeve covering the second shaft body is arranged at a position corresponding to the second through hole of the lower mounting segment, and a dismounting joint is further arranged at the lower end of the shaft sleeve and is connected to the insulating telescopic rod.

[0017] Further, arc-shaped grooves adapted to the contact net are arranged on opposite surfaces of the first contact block and the second contact block.

[0018] Further, a shaft seat is arranged at a position corresponding to the first through hole of the upper mounting segment, a cavity accommodating the second spring is arranged in the shaft seat, and the first shaft body extends out of the shaft seat. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, various elements or parts are not necessarily drawn according to the actual scale.

[0020] Fig. 1 Structure diagram of the embodiment of the utility model;

[0021] Fig. 2 Sectional view of the embodiment of the utility model;

[0022] Fig. 3 Structure diagram of the embodiment of the utility model combined with the insulating telescopic rod.

[0023] Reference signs: main frame 100, window 101, upper mounting section 110, lower mounting section 120, second contact block 200, arc-shaped groove 201, fixed tooth 202, second shaft body 210, clamping shoulder 211, first spring 220, first contact block 300, first shaft body 310, Y-shaped joint 311, shaft shoulder 312, pin shaft 313, second spring 320, shaft sleeve 400, oil injection hole 401, exhaust hole 402, step 403, dismounting joint 410, locking member 500, first end 501, second end 502, strip-shaped hole 503, ratchet tooth 504, shaft seat 600, top end 601, insulating telescopic rod 700. DETAILED DESCRIPTION

[0024] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, therefore only serve as examples, and cannot limit the protection scope of the utility model.

[0025] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meanings understood by the technical personnel in the field to which the utility model belongs.

[0026] As Figs. 1-3As shown, the embodiment provides a flexible contact net fast grounding device, which comprises a main frame 100, a first contact block 300, a second contact block 200 and a locking piece 500. The two ends of the main frame 100 are provided with mounting structures. The first contact block 300 is movably arranged at the upper end of the main frame 100. The second contact block 200 is movably arranged at the lower end of the main frame 100, and the second contact block 200 is arranged opposite to the first contact block 300 to form a clamping space for accommodating the contact net. The lower end of the main frame 100 is provided with a first spring 220 for pushing the second contact block 200 towards the contact net and keeping the contact net in a pressed state. In order to ensure that the contact net can be placed in the clamping space, an entrance needs to be formed on the main frame 100. The flexible contact net is a flexible wire, which is generally located at a height of 3.2-3.5 meters from the ground. Although the contact net is a flexible wire, it can be fixed by the main frame 100, so it is generally in a taut state and will not move with the up and down movement of the grounding device. Specifically, the mounting structures at the two ends of the main frame 100 are spaced apart, and the contact net can enter the clamping space through the gap between the two mounting structures. The locking piece 500 is movably arranged on the main frame 100 and is linked with the first contact block 300. The first end 501 of the locking piece 500 is connected with the main frame 100, and the second end 502 is connected with the second contact block 200 to lock the second contact block 200. When the first contact block 300 moves away from the second contact block 200, the second end 502 of the locking piece 500 is disengaged from the second contact block 200 to achieve unlocking. The upper end of the main frame 100 is provided with a second spring 320 for pushing the first contact block 300 to reset and drive the locking piece 500 to reset to the locking position.

[0027] In use, the insulating telescopic rod 700 is used in cooperation. Only the insulating telescopic rod 700 needs to be pulled to press the first contact block 300, so as to unlock the locking piece 500 and release the second contact block 200, and finally complete the electrical connection of the contact net. When the use is finished, only the insulating telescopic rod 700 needs to be pulled to lock the second contact block 200 and release the contact net. The use is convenient and fast.

[0028] In some embodiments, the mounting structure comprises an upper mounting segment 110 and a lower mounting segment 120 which extend substantially horizontally towards the same direction from the two ends of the main frame 100. The main frame 100 is substantially long strip-shaped and is in a vertical state. The upper mounting segment 110 and the lower mounting segment 120 form a character 'F' shape with the main frame 100. The gap on the right side of the character 'F' shape is the entrance of the main frame 100. The right side of the main frame 100 can be aligned with the contact net and the main frame 100 can be moved substantially horizontally to the right, so that the contact net can be sleeved into the clamping space, facilitating subsequent clamping operation.

[0029] In order to make the catenary more easily enter the clamping space, a guide slope is further arranged at the lower part of the outer end of the upper mounting section 110, which extends upwardly and upwardly from the lower part of the upper mounting section 110, so that the thickness of the outermost end of the upper mounting section 110 is reduced, and the catenary can more easily enter the clamping space under the guidance of the guide slope.

[0030] In some embodiments, a first through hole is arranged on the upper mounting section 110, the upper end of the first contact block 300 is connected with a first shaft body 310, the first shaft body 310 extends out of the first through hole, and the second spring 320 is sleeved on the first shaft body 310. The cooperation between the first through hole and the first shaft body 310 can ensure the smooth and directional movement of the first contact block 300, so that the first contact block 300 can tightly clamp the catenary when being pushed out by the spring.

[0031] In some embodiments, a second through hole is arranged on the lower mounting section 120, the lower end of the second contact block 200 is connected with a second shaft body 210, the second shaft body 210 extends out of the second through hole, and the first spring 220 is sleeved on the second shaft body 210. Similarly, the second shaft body 210 can also constrain the movement direction of the second contact block 200, so that the second contact block 200 can move vertically up and down, and then cooperate with the first contact block 300 to clamp and fix the catenary.

[0032] In some embodiments, the locking member 500 is in an inverted J shape, the first end 501 of the locking member 500 is hinged to the outer end of the upper mounting section 110, the top of the locking member 500 is connected with the first shaft body 310, the second end 502 of the locking member 500 is provided with a ratchet tooth 504, the end of the second contact block 200 connected with the ratchet tooth 504 is provided with a fixed tooth 202, and the second contact block 200 can only move in one direction away from the first contact block 300 when the ratchet tooth 504 and the fixed tooth 202 are engaged. The locking member 500 is preferably a plate structure, that is, the locking member 500 is in a sheet shape. The tooth shapes of the ratchet tooth 504 and the fixed tooth 202 are similar, one side of each is a slope, and the other side is a vertical surface, and the locking can be achieved by the contact between the vertical surfaces of the ratchet tooth 504 and the fixed tooth 202. Specifically, the slope of the ratchet tooth 504 and the fixed tooth 202 is on the upper side, and the vertical surface is on the lower side. When the locking member 500 is in the locking position, the fixed tooth 202 of the second contact block 200 contacts the slope of the ratchet tooth 504 when the second contact block 200 moves downward to reset to the position of not clamping the catenary, and the fixed tooth 202 can push away the ratchet tooth 504 under the action of the slope, so that the second contact block 200 can move downward in one direction. After the second contact block 200 is moved to the position, the vertical surface of the fixed tooth 202 abuts against the vertical surface of the ratchet tooth 504, and cannot move upward, thereby completing the locking of the second contact block 200. At this time, the gap between the second contact block 200 and the first contact block 300 is the largest, and the catenary can easily escape, so that the grounding device can be removed from the catenary.

[0033] In some embodiments, a window 101 is formed on the side wall of the main frame 100 for the locking member 500 to contact the second contact block 200. The window 101 allows the locking member 500 to contact the second contact block 200 more conveniently, and the overall structure is more compact.

[0034] In some embodiments, the top end 601 of the first shaft body 310 is fixedly connected with a Y-shaped joint 311, the top end 601 of the Y-shaped joint 311 is provided with a gap for the locking member 500 to extend into, a pin shaft 313 is arranged in the gap, and a strip-shaped hole 503 is formed on the locking member 500 at a position corresponding to the pin shaft 313, and the pin shaft 313 penetrates through the strip-shaped hole 503. The locking member 500 is a flat plate, that is, the thickness of the locking member 500 is small, and the Y-shaped joint 311 only needs to form a gap to place the locking member 500. The cooperation of the strip-shaped hole 503 and the pin shaft 313 allows the locking member 500 to move relative to the first shaft body 310, specifically, a combination of rotation and sliding. That is, it ensures that the locking member 500 can be switched between the locked state and the unlocked state.

[0035] In some embodiments, the lower mounting section 120 is provided with a shaft sleeve 400 covering the second shaft body 210 at a position corresponding to the second through hole, and the lower end of the shaft sleeve 400 is further provided with a dismounting joint 410 for abutting the insulating telescopic rod 700. The first spring 220 is located in the shaft sleeve 400, the second shaft body 210 is provided with a clamping shoulder 211 corresponding to the upper end of the first spring 220, and the shaft sleeve 400 is provided with a step 403 corresponding to the lower end of the first spring 220. The first spring 220 is a compression spring, which is compressed when the second contact block 200 moves downward from the state of clamping the contact net. The second contact block 200 that has moved to the position is locked by the locking member 500, and after the locking member 500 is unlocked, the first spring 220 releases the elastic force to push the second contact block 200 to abut against the contact net. In order to ensure that the second contact block 200 can be electrically connected with the conductive part in the insulating telescopic rod 700, the second contact block 200, the second shaft body 210, the shaft sleeve 400, and the dismounting joint 410 are all made of conductive material.

[0036] In order to make the action of the second contact block 200 more smooth, an oil injection hole 401 is arranged on the outside of the shaft sleeve 400 and communicates with the inner cavity of the shaft sleeve 400, and lubricant can be added into the shaft sleeve 400 during maintenance. Meanwhile, an exhaust hole 402 is further arranged on the outside of the shaft sleeve 400 and below the oil injection hole 401, and the exhaust hole 402 is arranged corresponding to the position of the lowest end of the movement of the second shaft body 210. The exhaust hole 402 can balance the air pressure inside and outside the shaft sleeve 400, and ensure the normal sliding of the second shaft body 210.

[0037] In some embodiments, the first contact block 300 and the second contact block 200 are provided with arc-shaped grooves 201 on the opposite surfaces thereof, which are adapted to the contact net. The arc-shaped grooves 201 can increase the contact area with the contact net, ensure the reliability of the electrical connection, and can also clamp the contact net to avoid the contact net from shaking in the clamping space.

[0038] In some embodiments, the upper mounting section 110 is provided with a shaft seat 600 corresponding to the position of the first through hole, the shaft seat 600 is internally provided with a cavity for accommodating the second spring 320, and the first shaft body 310 is arranged to pass through the shaft seat 600. The top end 601 of the shaft seat 600 is a clearance hole for the first shaft body 310 to extend out, and the diameter of the cavity of the shaft seat 600 is greater than the diameter of the clearance hole, so that the upper end of the second spring 320 can abut against the top end 601 of the cavity, and the first shaft body 310 is provided with a shaft shoulder 312 corresponding to the position of the lower end of the second spring 320. The second spring 320 is a compression spring. After the contact net enters the clamping space, the operator pulls the grounding device downward through the insulating telescopic rod 700. Since the contact net cannot move downward, the contact net will block the first contact block 300, so that the first contact block 300 is forced to move upward to push the locking piece 500 to release the second contact block 200. After the pulling force is removed, the second spring 320 which is compressed releases the elastic force to reset the first contact block 300 to the initial position. At this time, the first contact block 300 and the second contact block 200 are respectively connected with the upper and lower contact nets to complete the clamping action. The first contact block 300 pulls the locking piece 500 during the resetting process, and the locking piece 500 rotates around the first end 501 thereof to reset to the locking position. Then, when the grounding device needs to be removed after the operation is completed, the insulating telescopic rod 700 needs to be pushed, and the second contact block 200 is forced to move downward under the resistance of the contact net, and the locking piece 500 in the locking position can clamp the second contact block 200 which moves downward. At this time, the contact net between the second contact block 200 and the first contact block 300 is in a free state, and the grounding device can be removed.

[0039] In the description of the present application, it should be understood that the terms in the present application are only used for descriptive purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0040] In the present application, unless otherwise specifically defined and limited, the terms "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the description of the present application, a large number of specific details are explained. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, systems and techniques are not shown in detail in order not to obscure the understanding of the present application.

[0042] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.

Claims

1. A flexible catenary quick earthing device, characterized in that, The utility model relates to a contact net clamp, which comprises: a main frame (100) provided with mounting structures at both ends thereof; a first contact block (300) movably arranged at the upper end of the main frame (100); a second contact block (200) movably arranged at the lower end of the main frame (100), which is arranged opposite to the first contact block (300) to form a clamping space for accommodating a contact net, and the lower end of the main frame (100) is provided with a first spring (220) for pushing the second contact block (200) towards the contact net and keeping it in a pressed state; a locking member (500) movably arranged on the main frame (100) and linked with the first contact block (300), the first end (501) of the locking member (500) is connected with the main frame (100), and the second end (502) thereof is connected with the second contact block (200) to lock the second contact block (200), when the first contact block (300) moves away from the second contact block (200), the second end (502) of the locking member (500) is separated from the second contact block (200) to realize unlocking, and the upper end of the main frame (100) is provided with a second spring (320) for pushing the first contact block (300) to reset and drive the locking member (500) to reset to a locking position.

2. The flexible overhead contact line rapid earthing device according to claim 1, characterized in that The mounting structures comprise an upper mounting section (110) and a lower mounting section (120) extending in substantially the same direction from both ends of the main frame (100).

3. The flexible overhead contact line rapid earthing device according to claim 2, characterized in that A first through hole is formed in the upper mounting section (110), the upper end of the first contact block (300) is connected with a first shaft body (310), the first shaft body (310) extends out of the first through hole, and the second spring (320) is sleeved on the first shaft body (310).

4. The flexible overhead contact line rapid earthing device according to claim 2, characterized in that, A second through hole is formed in the lower mounting section (120), the lower end of the second contact block (200) is connected with a second shaft body (210), the second shaft body (210) extends out of the second through hole, and the first spring (220) is sleeved on the second shaft body (210).

5. The flexible overhead contact line rapid earthing device according to claim 3, characterized in that, The locking member (500) is in the shape of an inverted J, the first end (501) of the locking member (500) is hinged to the outer end of the upper mounting section (110), the top of the locking member (500) is connected with the first shaft body (310), the second end (502) of the locking member (500) is provided with a ratchet (504), one end of the second contact block (200) connected with the ratchet (504) is provided with a fixed tooth (202), and the second contact block (200) can only move in one direction away from the first contact block (300) when the ratchet (504) and the fixed tooth (202) are engaged.

6. The flexible overhead contact line rapid earthing device according to claim 5, characterized in that A window (101) is formed in the side wall of the main frame (100) for the locking member (500) to connect with the second contact block (200).

7. The flexible overhead contact line rapid earthing device according to claim 5, characterized in that The top end (601) of the first shaft body (310) is fixedly connected with a Y-shaped joint (311), the top end (601) of the Y-shaped joint (311) is provided with a gap for the lock piece (500) to extend into, a pin shaft (313) is arranged in the gap, and a strip-shaped hole (503) is formed in the lock piece (500) corresponding to the position of the pin shaft (313), and the pin shaft (313) penetrates through the strip-shaped hole (503).

8. The flexible overhead contact line rapid earthing device according to claim 4, characterized in that, The lower mounting section (120) is provided with a shaft sleeve (400) covering the second shaft body (210) corresponding to the position of the second through hole, and the lower end of the shaft sleeve (400) is further provided with a dismounting joint (410) butting against the insulating telescopic rod (700).

9. The flexible overhead contact line rapid earthing device according to claim 1, characterized in that, The opposite surfaces of the first contact block (300) and the second contact block (200) are both provided with arc-shaped grooves (201) matched with the contact net.

10. The flexible overhead contact line rapid earthing device according to claim 3, characterized in that, The upper mounting section (110) is provided with a shaft seat (600) corresponding to the position of the first through hole, the shaft seat (600) is internally structured with a cavity accommodating the second spring (320), and the first shaft body (310) penetrates out of the shaft seat (600).

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