Ground wire connected to sensor module

Abstract

This application belongs to the field of power maintenance equipment, specifically relating to a ground wire connection sensing module. It aims to solve the problem of monitoring the ground wire connection status in power systems, providing a hardware foundation for real-time indication. The module includes a conductive unit and a sensor body. The conductive unit consists of an arc-shaped contact part and a conductive rod. The contact part generates pressure upon contact with the cable, which is transmitted to the sensor via the conductive rod to indicate the connection status. When disconnected, a reset spring causes the signal to disappear. A support frame is detachably fixed to the upper part of the hook, and symmetrical conductive units on both sides monitor unbalanced connections. This provides a hardware foundation for real-time monitoring of the grounding hook connection status.

Description

Technical Field

[0001] This application belongs to the field of power maintenance equipment, specifically relating to a ground wire connection sensing module. Background Technology

[0002] The connection of the grounding wire in the power system includes the hook end and the grounding end. The hook end is attached to the cable with a cable hook to serve as a temporary grounding, providing safety for power maintenance. If the grounding wire is not properly connected, loose, or falls off, it may cause electric shock to personnel. If the grounding wire is not removed during the power supply process, there is also a significant safety hazard. Therefore, it is necessary to know the connection status of the grounding wire.

[0003] The management office to which the applicant belongs requires that the daily inspection time for grounding wires at the substation work site should not exceed 30 minutes. However, statistics show that manual inspection of grounding wires takes the shortest time on sunny days, averaging 41.44 hours, which cannot meet the requirement.

[0004] Therefore, it is necessary to introduce a grounding wire measurement and control module to shorten the grounding wire inspection time. Utility Model Content

[0005] Technical problem: The technical problem to be solved by this application is to provide a sensing module that can indicate the connection status of cable hooks, so as to provide a certain hardware foundation for real-time monitoring of the connection status of ground wires.

[0006] Technical solution: A ground wire connection sensing module includes a conductive unit for transmitting connection pressure and a sensor body. The conductive unit includes a contact part and a conductive rod connected to the contact part.

[0007] The contact part is used to contact the cable being hung. One end of the transmission rod is connected to the contact part, and the other end is connected to the sensor body. When hanging, the contact part contacts the cable being hung, and the contact part generates reverse pressure. This pressure is transmitted to the sensor body through the transmission rod to indicate that the cable has been hung. When disconnecting, the contact part separates from the cable, the pressure is lost, the upper end of the transmission rod no longer presses on the sensor, the signal disappears, and the hanging is disconnected.

[0008] Furthermore, it also includes a support frame, which is set on the upper part of the cable hook and can be set above the hanging position of the rotating hook by means of welding, clamping or other methods. The transmission unit and the sensor body are both set on the support frame. The sensor body is set on the upper end of the frame and the transmission unit is set on both sides of the support frame, and can move vertically relative to the support frame.

[0009] Furthermore, the support frame includes two parallel support plates, which are fastened together by a locking mechanism. This means the frame is detachably connected to the hook, allowing the sensor module to be applied to different hooks. The lower part of the support plate is arc-shaped, sharing the same structure as the upper hook body for easy installation. Protrusions can be provided on the support plate surface opposite the hook to strengthen the connection and increase stability. The upper ends of the two support plates form a common top end face, on which a housing is installed. The lateral thickness of the housing near the bottom is the same as the thickness of the hook, facilitating synchronous fixing using bolts of the same specification as the locking mechanism. Specifically, the lower part of the support plate is bolted to hold the hook between the two support plates, and the housing is bolted from the top to the bottom of the support plate.

[0010] The sensor body is housed inside the housing. The housing has at least one connection port for mounting the transmission rod. The connection port is located on one side of the support plate and is 3-15mm away from the support plate. The direction of the connection port is approximately pointing towards the axis of the reference circle of the hook structure. The length of the transmission rod extending downward from the connection port needs to exceed the inner wall of the hook so that the contact part can contact the cable to generate an upward thrust (i.e., the aforementioned pressure) when hooked.

[0011] Furthermore, the contact part is an arc-shaped plate, and its concave surface faces the same direction as the arc-shaped concave surface of the lower part of the support plate, that is, it points to the axis where the reference circle of the hook is located.

[0012] Furthermore, the lower end of the transmission rod is provided with the aforementioned arc-shaped plate, the transmission rod is embedded in the connection port, and it can reciprocate in the vertical direction.

[0013] Furthermore, a through hole is provided on one side of the housing as the movement path of the conductive rod. The upper part of the through hole is circular, and the lower part is prismatic. The entire conductive rod passes through the through hole. The diameter of the part above the through hole is larger than the diameter of the circular through hole as a limit to prevent the conductive rod from falling downward. The diameter of the circular through hole is smaller than that of the prismatic through hole. A return spring is provided at the bottom surface of the circular through hole. The return spring is sleeved on the cylindrical part of the conductive rod, and the lower end of the return spring abuts against the upper surface of the prismatic section of the conductive rod. This structure is so that when the connection is broken, the return spring on the housing will reset the conductive rod downward so that it is separated from the pressing surface of the sensor.

[0014] Furthermore, the transmission units are symmetrically arranged on both sides of the housing, making the sensing module more reliable. When the connection is incomplete or unbalanced, and only one side indicates that the connection is complete, it can indicate the state of incomplete connection or looseness.

[0015] Furthermore, a PCB board is installed inside the housing, and a pressure sensor, a proximity switch, or a push switch are installed on the PCB board at a position opposite to the upper end of the transmission rod.

[0016] Furthermore, the housing contains one or more of a wireless transmission module and a positioning module, which may be integrated onto a PCB board or disposed separately within the housing. The wireless transmission module may be a Bluetooth module that transmits radio frequency signals or other wireless transmission modules with strong anti-interference capabilities. The connection status can be transmitted wirelessly to a nearby receiving device, which can then use the signal locally or forward it to other devices.

[0017] Furthermore, the housing is set on the plane where the upper surfaces of the two support plates are located. The housing includes a box body and a box cover. The box body is connected to the support plates by any of the following methods: slidable embedding (the support plates need to be relatively close to complete the clamping, so the bottom of the shell and the support plates need to be slidable) or bolt connection. The box cover is connected to the box body by any of the following methods: snap-fit, adhesive, or bolt connection.

[0018] The beneficial effects of this application are as follows:

[0019] 1. It provides the hardware foundation for real-time indication of cable hook connection status, promptly detects loose or detached connections, avoids potential electric shock hazards, and prevents accidents caused by failure to remove ground wires when power is supplied.

[0020] 2. Reduce the daily inspection time for substation grounding wires (originally 41.44 minutes manually → less than 30 minutes) and achieve automated monitoring.

[0021] 3. Symmetrical design of dual-sided conductive units to detect incomplete or loose connections; reset spring ensures accurate signal reset; anti-interference wireless transmission.

[0022] 4. Detachable support frame, compatible with hooks of different specifications; wireless / positioning module facilitates remote signal forwarding and device positioning.

[0023] 5. Provides the hardware foundation for real-time monitoring of ground wire connection status, improving power maintenance safety and operational efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic front view of the support plate according to an embodiment of this application;

[0025] Figure 2 , 3 This is a three-dimensional schematic diagram of the support plate according to an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of the housing (sensor assembly) according to an embodiment of this application;

[0027] Figure 5 for Figure 4 A schematic diagram of the AA-direction cross-section;

[0028] Figure 6 This is a side view of the housing according to an embodiment of this application;

[0029] Figure 7 , 8 This is a perspective view of the housing according to an embodiment of this application;

[0030] Figure 9 This is a schematic diagram of the conduction unit in an embodiment of this application;

[0031] Figure 10 This is a schematic front view of an embodiment of this application;

[0032] Figure 11 This is a schematic side view of an embodiment of this application;

[0033] Figure 12 This is a three-dimensional schematic diagram of an embodiment of this application;

[0034] Figure 13 This is a schematic diagram of the installation on the cable hook according to an embodiment of this application;

[0035] Figure 14 This is a schematic diagram illustrating the pressure transmission principle during connection in an embodiment of this application;

[0036] Figure 15 In order to be in Figure 14 A clearer internal structure based on this.

[0037] In the diagram: 1. Support plate; 2. Ear seat; 3. Mounting base; 4. Mounting hole; 5. Anti-slip protrusion; 6. Box body; 7. Box cover; 8. Connecting base; 9. PCB board; 10. Connection port; 11. Circular hole; 12. Square hole; 13. Arc plate; 14. Conductor rod; 15. Limiting end; 16. Return spring; 17. Cable hook; 18. Wire. Detailed Implementation

[0038] like Figure 1-15 As shown, a ground wire-connected sensing module is shown.

[0039] Reference Figure 1-3 The mounting and clamping of the sensing module on the cable hook 17, as well as the mounting support frame for other accessories, are based on two opposing pieces. Figure 1-3 The support plate 1 shown is fan-shaped, with protruding lugs 2 on both sides for connecting clamping bolts, and a mounting base 3 protruding from the outer edge of the fan shape on the upper part. Mounting holes 4 are respectively provided on the left and right sides of the mounting base 3 for mounting the sensor assembly.

[0040] The connection with the cable hook 17 is a clamping connection between two support plates 1. Therefore, the inner sidewall of the support plate 1 is provided with anti-slip protrusions 5 to increase the clamping stability.

[0041] Reference Figure 4 The sensor assembly includes a housing, which includes a box body 6 and a cover 7. The lower two sides of the box body 6 are provided with connecting seats 8 that are connected to the mounting base 3.

[0042] Reference Figure 5 , 6 The housing also includes a PCB board 9. Connection ports 10 for connecting the conductive unit are located on both sides of the box 6. Each connection port 10 is a vertical path extending from below into the box 6, including an upper circular hole 11 and a lower square hole 12. A press button on the PCB board 9 corresponds to the circular hole 11. The overall structure of the housing is as follows: Figure 7 , 8 As shown.

[0043] Reference Figure 9 The transmission unit includes an arc-shaped plate 13 and a transmission rod 14 connected to the arc-shaped plate 13. The section of the transmission rod 14 near the arc-shaped plate 13 is square, corresponding to the square hole 12 on the connection port 10. The upper section near the inside of the housing is cylindrical, corresponding to the circular hole 11 on the connection port 10. A limiting end 15 is provided at the top of the transmission rod 14. The diameter of the limiting end 15 is larger than the diameter of the cylindrical section, which can play a limiting role to prevent it from falling.

[0044] A return spring 16 is provided on the bottom surface of the circular hole 11 of the connection port 10. The return spring 16 is sleeved on the cylindrical section of the transmission rod 14, and its lower end abuts against the upper end surface of the square section, so as to pop the transmission rod 14 downward from the housing and reset it. For the specific structure, please refer to Figure 15 .

[0045] Reference Figure 10-12 The upper mounting base 3 of the two support plates 1 is connected to the connecting base 8 on both sides of the housing by bolts and nuts. Two adjusting bolts for clamping and fastening are provided on the ear base 2. In the initial state of the transmission unit placed in the connection port 10, the arc plate 13 at its lower part crosses the arc concave surface of the support plate 1.

[0046] Figure 13 The image shows the connection between the sensing module and the cable hook 17. In the initial state after connection, the arc plate 13 of the transmission rod 14 also passes over the concave surface of the cable hook 17.

[0047] If the cable hook 17 is too large, the gap between the support plate 1 and the connecting seats 8 on the left and right sides of the bottom of the housing will be larger than the gap between the support plate 1 and the housing. A small gap (the gap between the support plate 1 and the housing) will not affect the use of the sensing module. If the gap is too large, a shim can be added between the support plate 1 and the connecting seat 8.

[0048] Meanwhile, the cylindrical transmission rod 14 and the square transmission rod 14 of the transmission unit can be connected by a thread to adjust the length of the transmission rod 14 to accommodate cable hooks 17 of different specifications.

[0049] Reference Figure 14 , 15 After being connected, the wire 18 lifts the arc plate 13, and the push button on the PCB board 9 is pressed through the conduction rod 14 to change the circuit state.

Claims

1. A grounding connection sensing module, comprising a conductive unit for transmitting connection pressure and a sensor body, characterized in that, The conductive unit includes a contact portion and a conductive rod (14) connected to the contact portion. The contact part is used to contact the cable to be hung. One end of the transmission rod (14) is connected to the contact part, and the other end is linked to the sensor body.

2. The ground wire-connected sensing module as described in claim 1, characterized in that, It also includes a support frame, on which both the conductive unit and the sensor body are mounted.

3. The ground wire-connected sensing module as described in claim 2, characterized in that, The support frame includes two parallel support plates (1), which are fastened together by a locking mechanism. The lower part of the support plate (1) is arc-shaped, and the upper part of the support plate (1) is provided with a shell. The sensor body is disposed inside the housing, and the housing is provided with at least one connection port (10) for mounting the conductive rod (14).

4. A ground wire-connected sensing module as described in claim 3, characterized in that, The contact part is an arc-shaped plate (13), whose concave surface faces the same direction as the arc-shaped concave surface of the lower part of the support plate (1).

5. A ground wire-connected sensing module as described in claim 4, characterized in that, The lower end of the transmission rod (14) is provided with the arc plate (13), the transmission rod (14) is embedded in the connection port (10), and can reciprocate in the vertical direction.

6. A ground wire-connected sensing module as described in claim 5, characterized in that, A return spring (16) is provided at the connection between the transmission rod (14) and the housing. The upper end of the transmission rod (14) is provided with a limiting end.

7. A ground wire-connected sensing module as described in claim 6, characterized in that, The conductive units are symmetrically arranged on both sides of the housing.

8. A ground wire-connected sensing module as described in claim 7, characterized in that, A PCB board (9) is provided inside the housing. A pressure sensor, a proximity switch, or a push switch is provided on the PCB board (9) at a position opposite to the upper end of the transmission rod (14).

9. A ground wire-connected sensing module as described in claim 8, characterized in that, The housing is provided with one or more of a wireless transmission module and a positioning module, which are integrated on the PCB board (9) or set separately in the housing.

10. A ground wire-connected sensing module as described in claim 9, characterized in that, The housing is disposed on the plane of the upper end face of the two support plates (1). The housing includes a box body (6) and a box cover (7). The box body (6) is connected to the support plate (1) by any means of sliding embedding or bolt connection. The box cover (7) is connected to the box body (6) by any means of fastening, bonding or bolt connection.

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