An inductive ground clamp

Abstract

The application belongs to the field of electric power maintenance equipment, and particularly relates to an inductive grounding clamp. The inductive grounding clamp comprises a'' type fixing part and a clamping part. The fixing part is provided with a movable button connected with a pressure sensor or a button switch. When the grounding row is clamped, the button is pressed to change the signal, and the connection state is indicated. The guide protrusion cooperates with the sliding groove to ensure the clamping precision. The arc-shaped concave surface limits the grounding row and prevents accidental touch. The adjusting screw is matched with the handle to facilitate clamping adjustment. The sensor, wireless transmission and positioning module are arranged in the cavity of the fixing part, and the state signal transmission and position tracking are supported. The cover and the reset spring facilitate installation and operation. The device provides a hardware basis for grounding state monitoring, shortens the inspection time, and improves the safety and efficiency.

Description

Technical Field

[0001] The present application belongs to the field of electric power maintenance equipment, and specifically relates to an inductive grounding wire clamp. Background Art

[0002] The connection of the grounding wire in the power system includes a hooking end and a grounding end. The grounding operation is realized by short-circuiting the three phases with a hooking wire, connecting them into the grounding wire clamp, and clamping the grounding wire clamp on the grounding bar.

[0003] It provides safety guarantee for electric power maintenance. Once the connection of the grounding end of the grounding wire is loose, poorly connected or falls off, it may cause electric shock to personnel. If the unremoved grounding wire cannot be found during power transmission, there is also a great potential safety hazard. Therefore, it is necessary to grasp the hooking state of the grounding wire.

[0004] The management office to which the applicant belongs requires that the daily inspection time of the grounding wire at the substation operation site shall not exceed 30 minutes. However, according to statistics, the manual inspection of the grounding wire takes the shortest time on sunny days, with an average time consumption of 41.44 minutes, which cannot meet the demand.

[0005] Therefore, it is necessary to introduce a measurement and control module for the grounding wire to shorten the inspection time of the grounding wire. Contents of the Utility Model

[0006] Technical Problem: The technical problem to be solved by the present application is to provide a sensing-type grounding wire clamp capable of indicating the clamping state of the grounding wire clamp, which provides a certain hardware basis for real-time monitoring of the connection state of the grounding end of the grounding wire.

[0007] Technical Solution: An inductive grounding wire clamp comprises a fixing member and a clamping member arranged oppositely, and a movable key is arranged on the surface of the fixing member opposite to the clamping member;

[0008] The movable key is connected to any one of a pressure sensor and a key switch. After the grounding bar is clamped, the movable key on the fixing member is pressed by the grounding bar, so that the pressure sensor / key switch changes the signal indication state, and then the measurement and control of the grounding state can be completed.

[0009] Further, the fixing member is a "C"-shaped clamp, and the side wall of the fixing member is provided with a guide protrusion;

[0010] The clamping member is arranged opposite to the lower bottom surface of the fixing member, and the side wall of the clamping member is provided with a sliding groove that correspondingly slides with the guide protrusion; the cooperation of the protrusion and the sliding groove can provide guidance for the movement of the clamping member.

[0011] The bottom surface of the clamping member is provided with an upward arc-shaped concave surface. On the one hand, the arc-shaped concave surface can limit the position of the grounding bar during clamping, and on the other hand, in the idle state, even if the movable member is moved to the lower arm of the fixing member, it will not touch the movable key, so as to avoid false alarm of the grounding state.

[0012] Furthermore, it also includes an adjusting screw, the lower end of which is connected to the clamping member in a movable manner, allowing the adjusting screw to rotate relative to the moving member. The adjusting screw passes through a threaded hole in the upper arm of the fixed member, and an adjusting handle is provided at the upper end of the adjusting screw. By rotating the adjusting screw forward / backward using the adjusting handle, the clamping member can be moved closer to / away from the moving member.

[0013] Furthermore, a cavity is provided inside the lower arm of the fixing component, and a pressure sensor is installed inside the cavity. When clamping the ground panel, pressing the movable button on the ground panel transmits pressure to the pressure sensor, changing the signal input state.

[0014] Furthermore, the cavity is also equipped with one or more of a wireless transmission module and a positioning module. The wireless transmission module is used to send the status signal of the pressure sensor, and the positioning module is used to locate the position of the grounding wire.

[0015] Furthermore, the active button is a longitudinal guide post, and a circular hole is provided on the bottom surface of the fixing part, which connects to the cavity;

[0016] A return spring is provided on the side wall of the circular hole, and the return spring is sleeved with the guide post. The end of the guide post protrudes from the upper surface of the lower arm of the fixing member through the circular hole, and the front end is located in the cavity. The diameter of its front end is larger than the diameter of the inner hole of the cavity, and the outer diameter of the circular hole is larger than the inner diameter. The front end of the return spring is provided on the connecting platform of the two, and the return spring is sleeved on the guide post. The end of the return spring abuts against the radial protrusion of the guide post.

[0017] Furthermore, the bottom surface of the fastener is cut away to form a cavity, and a cover is provided on the bottom surface. This facilitates the installation of components within the cavity. The components within the cavity include a power module, a pressure sensor module, a wireless transmission module, and a positioning module.

[0018] Furthermore, the force-bearing part of the pressure sensor or push-button switch corresponds to the center line of the axial movement of the guide column.

[0019] Furthermore, the sidewalls of the cavity are provided with circular holes for mounting an antenna. The antenna is used to transmit and receive position information and / or grounding status information.

[0020] The beneficial effects of this application are as follows:

[0021] 1. By connecting a pressure sensor or push-button switch via an active button, the clamping status of the grounding clamp can be detected in real time, providing hardware support for monitoring the grounding connection status and shortening the grounding connection inspection time. This effectively prevents the risk of electric shock caused by loose or detached connections, as well as safety hazards caused by failure to remove the grounding wire.

[0022] 2. The arc-shaped concave surface on the fixing component limits the grounding bar when clamped, preventing accidental activation of the moving button when the component is idle and preventing false grounding status alarms.

[0023] 3. Built-in wireless transmission module and positioning module, supporting remote transmission of status signals and grounding wire position tracking, to optimize status management.

[0024] 4. The cavity at the lower arm of the fixing member is provided with a sealing cover, which facilitates the installation of the power supply, sensor, wireless transmission and positioning modules; the return spring ensures reliable reset of the movable button. Brief Description of the Drawings

[0025] Figure 1 , 2 is a schematic diagram of the fixing member according to the embodiment of the present application;

[0026] Figure 3 , 4 is a schematic diagram of the clamping member according to the embodiment of the present application;

[0027] Figure 5 is a schematic overall front view according to the embodiment of the present application;

[0028] Figure 6 is a schematic diagram of the front-view internal structure and partial enlargement according to the embodiment of the present application;

[0029] Figure 7 , 8 is a schematic perspective view according to the embodiment of the present application.

[0030] As shown in the drawings: 1. Fixing member; 2. Upper arm; 3. Threaded hole; 4. Side arm; 5. Guide protrusion; 6. Induction hole; 7. Cavity; 8. Antenna mounting hole; 9. Clamping member; 10. Arc-shaped concave surface; 11. Adjusting screw; 12. Hole seat; 13. Sliding groove; 14. Guide post; 15. Support table; 16. Return spring; 17. Boss; 18. Pressure-sensitive element. Detailed Description of the Embodiments

[0031] As shown in Figure 1-8 , an induction-type grounding wire clamp is provided. With reference to Figure 1 , 2 , the grounding wire clamp includes a "C"-shaped fixing member 1. The upper arm 2 of the fixing member 1 is provided with a vertically downward threaded hole 3, and the inner side of the side arm 4 of the fixing member 1 is provided with a guide protrusion 5;

[0032] The surface of the lower arm of the fixing member 1 is provided with an induction hole 6 at a position corresponding to the threaded hole 3, the induction hole 6 communicates with the cavity 7 below the lower arm, and a housing made of an insulating material is arranged in the cavity 7 or an insulating material is coated inside the cavity 7.

[0033] An antenna mounting hole 8 is opened on the side wall of the cavity 7.

[0034] With reference to Figure 3 , 4The main body of the clamping member 9 is a cuboid with an upwardly concave arc-shaped concave surface 10 on its lower surface. The clamping member 9 is provided with a hole seat 12 for connecting with the adjusting screw 11 on its upper part, and a sliding groove 13 for sliding with the guide protrusion 5 on its left side wall.

[0035] Reference Figure 5 , 6 A guide post 14 made of insulating material is set inside the sensing hole 6 as a movable button. The diameter of the lower end of the guide post 14 is larger than the diameter of the sensing hole 6 located on the inner end face of the cavity 7. A support platform 15 (counter-hole design) is set inside the sensing through hole. A reset spring 16 is set on the support platform 15. The lower end of the reset spring 16 abuts against the support platform 15, and its upper end abuts against the boss 17 in the upper part of the guide post 14, which plays a reset support role for the guide post 14.

[0036] A pressure-sensitive element 18 of a pressure sensor is provided at a relative position on the lower end face of the guide column 14. In addition to the pressure sensor, a positioning module is also provided in the cavity 7 for locating the position of the grounding clamp; a wireless transmission module for receiving / sending the status signal of the pressure sensor; and a power supply module for supplying power to all power-consuming modules.

[0037] Reference Figure 7 , 8 An adjusting screw 11 is provided in the threaded hole 3. A rotating handle is provided at the upper end of the adjusting screw 11. The lower end of the adjusting screw 11 is movably connected to the clamping member 9 and can rotate relative to the clamping member 9.

[0038] The overall inductive grounding clamp includes a fixing component 1, a clamping component 9, an adjusting screw 11, a transmitting / receiving antenna, and supporting electronic components (a pressure sensor, a wireless transceiver module, a positioning module, and a power module located in the cavity 7 of the fixing component 1). When the grounding clamp holds the ground bar, the ground bar presses down the guide post 14 to activate the pressure-sensitive element 18 on the pressure sensor, changing the status signal of the pressure sensor. The pressure sensor then synchronizes the signal to the wireless transmission module and the positioning module.

Claims

1. An inductive grounding clamp, comprising a fixing member (1) and a clamping member (9) disposed opposite to each other, characterized in that, A movable button is provided on the surface of the fixing member (1) opposite to the clamping member (9). The movable button is connected to either a pressure sensor or a push-button switch. The fixing member (1) is a "U"-shaped clamp, and a guide protrusion (5) is provided on the side wall of the fixing member (1). The clamping member (9) is disposed opposite to the bottom surface of the fixing member (1), and a sliding groove (13) corresponding to the guide protrusion (5) is provided on the side wall of the clamping member (9). An upward arc-shaped concave surface (10) is provided on the bottom surface of the clamping member (9). An adjusting screw (11) is also included. The lower end of the adjusting screw (11) is connected to the clamping member (9). The adjusting screw (11) passes through the threaded hole (3) of the upper arm (2) of the fixing member (1). An adjusting handle is provided at the upper end of the adjusting screw (11). A cavity (7) is provided in the lower arm of the fixing member (1). The movable button is a longitudinal guide post (14). A round hole is provided on the bottom surface of the fixing member (1). The round hole is connected to the cavity (7). A reset spring (16) is provided on the side wall of the round hole. The reset spring (16) is sleeved with the guide post (14).

2. The inductive grounding clamp as described in claim 1, characterized in that, A pressure sensor is installed inside the cavity (7).

3. An inductive grounding clamp as described in claim 2, characterized in that, The cavity (7) is also equipped with one or more of the following: a wireless transmission module and a positioning module.

4. An inductive grounding clamp as described in claim 1, characterized in that, The cavity (7) is formed by cutting off the bottom surface of the fastener (1), and a cover is provided on the bottom surface.

5. An inductive grounding clamp as described in claim 1, characterized in that, The force-bearing part of the pressure sensor or push-button switch corresponds to the center line of the axial movement of the guide post (14).

6. An inductive grounding clamp as described in any one of claims 1-5, characterized in that, The cavity (7) has a circular hole on its side wall for mounting an antenna.

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