Grounding resistance auxiliary test tool

Abstract

The utility model discloses an auxiliary testing tool for grounding resistance, which comprises a grounding probe, a grounding wire and a winding device, the grounding probe is provided with a handle and a grounding electrode, the winding device is mounted on the handle, the grounding wire is wound on the winding device and is electrically connected with the grounding electrode when the grounding resistance is measured, and the grounding electrode is electrically connected with the grounding probe. The device is used for measuring grounding resistance. The grounding probe and the winding device are detachably connected, so that the grounding wires can be conveniently wound and unwound when the grounding resistance is measured, the situation that the measurement effect is affected by mutual winding of the grounding wires is avoided, and meanwhile the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of power system testing tools, in particular to a ground resistance auxiliary testing tool. Background Art

[0002] A large number of ground resistance tests are required every year for new towers, abnormal changes, external force damage, and daily operation and maintenance. Especially for newly commissioned line towers and regular lightning protection tests in spring each year, all towers need to be strictly tested for ground resistance and responsible. The commonly used ground resistance measuring instrument is the ZC-8 megohmmeter. When using the ZC-8 megohmmeter for testing, the measurement process is cumbersome and complicated, and the measurement environment layout is required to be high. During the measurement, the ground wire needs to be repeatedly disassembled or retracted, which takes a lot of time. At the same time, the grounding probe is easily damaged without any protective measures.

[0003] Therefore, there is an urgent need to develop a ground resistance auxiliary test tool that can store the ground wire well, improve work efficiency and avoid waste of the ground wire. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a ground resistance auxiliary test tool, which can orderly retract and release the ground wire during the process of measuring the ground resistance using a ground resistance meter, thereby improving work efficiency.

[0005] The utility model discloses a grounding resistance auxiliary test tool, comprising a grounding probe, a grounding wire and a winding device, wherein the grounding probe is provided with a handle and a grounding electrode, the winding device is installed on the handle, the grounding wire is wound around the winding device and is electrically connected to the grounding electrode when measuring the grounding resistance, and is used for measuring the grounding resistance.

[0006] Furthermore, the winding device includes a cross bar and two annular winding grooves respectively arranged at two ends of the cross bar, and the annular winding grooves are used to wind the ground wire.

[0007] Furthermore, it also includes a hub arranged on the cross bar, and the hub is rotatably matched with the handle.

[0008] Furthermore, the cross bar is provided with a driving handle, which is used to make the cross bar move in a circle around the handle when winding the ground wire.

[0009] Furthermore, the annular winding groove is a "U"-shaped open groove, and the maximum diameter of the opening of the annular winding groove is 55 mm.

[0010] Furthermore, it also includes a grounding wire clamp, which is connected to the grounding wire and connected to the grounding electrode when measuring resistance.

[0011] Furthermore, a wrench is also included, one end of which is a hollow rod-shaped structure for accommodating the grounding electrode, and the other end is used to remove the nut.

[0012] Furthermore, it also includes a ground resistance meter, which is connected to the ground probe through a ground wire when measuring the ground resistance.

[0013] Furthermore, it also includes a connecting rod, which is inserted into the handle and rotatably matched with the wheel hub.

[0014] The beneficial effects of the utility model are as follows: the ground resistance auxiliary test tool of the utility model avoids the phenomenon of disorderly entanglement when the ground wire is collected / released, effectively improves the work efficiency, and also reduces the influence of the disorderly placement of the ground wire on the measurement result, thereby improving the accuracy of measuring the ground resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 is a schematic diagram of the structure of the grounding probe;

[0018] Figure 3 It is a structural schematic diagram of a winding device;

[0019] Figure 4 This is a schematic diagram of the structure of the grounding probe and the wrench. DETAILED DESCRIPTION

[0020] Figure 1 It is a structural schematic diagram of the utility model. Figure 2 The schematic diagram of the grounding probe is shown in Figure 1. Figure 3 is a structural diagram of the retractable device. Figure 4 The schematic diagram of the structure of the grounding probe and the wrench is shown in FIG. Figure 1-4 As shown: a grounding resistance auxiliary test tool of the present embodiment includes a grounding probe 1, a grounding wire 3 and a winding device 2, the grounding probe 1 is provided with a handle 102 and a grounding electrode 101, the winding device 2 is installed on the handle 102, the grounding wire 3 is wound around the winding device 2 and is electrically connected to the grounding electrode 102 when measuring the grounding resistance, and is used to measure the grounding resistance; there are at least two grounding probes 1, the grounding electrode 101 is inserted into the ground for measuring the grounding resistance, the grounding wire 3 is wound around the winding device 2 and is electrically connected to the grounding electrode 101.

[0021] In the prior art, a large number of ground resistance tests are required every year when a pole is newly put into use, moved, damaged by external forces, or during daily operation and maintenance. The commonly used ground resistance measuring instrument is the ZC-8 megohmmeter. When the ZC-8 megohmmeter is used for testing, the measurement process is cumbersome and complicated, and the measurement environment layout is required to be high. During the measurement, the ground wire needs to be repeatedly disassembled or retracted, which takes a lot of time. At the same time, the ground probe has no protective measures and is easily damaged. The ground resistance auxiliary test tool of the utility model can store the ground wire well, improve work efficiency, and avoid the influence of the random placement of the ground wire on the ground resistance measurement results.

[0022] In this embodiment, the winding device 2 includes a cross bar 201 and two annular winding grooves 202 respectively arranged at both ends of the cross bar 201, and the annular winding grooves 202 are used to wind the grounding wire 3; in this structure, the cross bar 201 and the annular winding grooves 202 constitute a structure similar to a wire wheel, and the grounding wire 3 is wound around the cross bar 201 and the annular winding grooves 202, and the grounding wire 3 is clamped by the annular winding grooves 202 to prevent the grounding wire 3 from falling.

[0023] In this embodiment, it also includes a hub 203 set on the cross bar 201, and the hub 203 is rotatably matched with the handle 102; the hub 203 is rotatably matched with the handle 102 to facilitate winding the ground wire 3, and the handle 102 is inserted into the hub 203 and is partially threadedly connected with the hub 203.

[0024] In this embodiment, the cross bar 201 is provided with a driving handle 204, which is used to make the cross bar 201 make a circular motion around the handle 102 when winding the grounding wire 3; the driving handle 204 is arranged perpendicular to the cross bar 201, and when winding the grounding wire 3, the user holds the driving handle 204 to make the cross bar 201 make a circular motion around the handle 101, so that the grounding wire 3 is wound around the annular winding groove 202, and the driving handle 204 is arranged at a position close to the annular winding groove 202, preferably 20 mm away from the connection between the annular winding groove 202 and the cross bar 201 (i.e., the bottom of the annular winding groove).

[0025] In this embodiment, the annular winding groove 202 is a "U"-shaped open groove, and the maximum diameter of the opening of the annular winding groove 202 is 55 mm; the annular winding groove 202 is set as a "U"-shaped open groove to facilitate winding the grounding wire 3. In this structure, the maximum diameter of the top of the annular winding groove 202 is preferably 55 mm.

[0026] In this embodiment, a grounding wire clamp 5 is also included, and the grounding wire clamp 5 is connected to the grounding wire 3 and is electrically connected to the grounding electrode 102 when measuring resistance. In this structure, the grounding wire clamp 5 is an existing structure and will not be described in detail here. When the grounding resistance is not measured, the grounding wire clamp 5 is connected to the grounding wire 3 and clamped on the driving handle 204, which is convenient for storing the grounding wire clamp 5 and the grounding wire 3. When measuring the grounding resistance, it is clamped on the grounding electrode 102 and electrically connected to the grounding electrode 102.

[0027] In this embodiment, a wrench 6 is also included, one end of which is a hollow rod-shaped structure 601 for accommodating the grounding electrode 101, and the other end is used to remove the nut; one end of the wrench 6 is set to a hollow rod-shaped structure 601 and is adapted to the size of the grounding electrode 101, so that it is convenient to accommodate the grounding electrode 101 when the grounding resistance is not measured, and is used to protect the grounding electrode 101 and prevent the grounding electrode 101 from being damaged. The other end can be used to remove the nut during the tower maintenance process. The structure for removing the nut is an existing structure and will not be repeated here.

[0028] In this embodiment, a ground resistance meter 4 is also included. When measuring the grounding resistance, the ground resistance meter 4 is connected to the grounding probe 1 through the grounding wire 3. The ground resistance meter 4 is an application of the prior art. When measuring the grounding resistance, the ground resistance meter 4 is electrically connected to the grounding wire 3. The number of grounding probes 1 can be adjusted according to actual test needs, and preferably there are at least two. The ground resistance meter 4 is connected to the grounding probes 1 respectively through the grounding wires 3.

[0029] In this embodiment, a connecting rod 103 is also included. The connecting rod 103 is inserted into the handle 102 and rotatably cooperates with the hub 203. The connecting rod 103 is inserted into the handle 102 and constitutes a part of the handle 102. The connecting rod 103 rotatably cooperates with the hub 203, thereby facilitating winding the ground wire 3 into the annular winding groove 202.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A ground resistance auxiliary test tool, characterized in that: It comprises a grounding probe, a grounding wire and a winding device, wherein the grounding probe is provided with a handle and a grounding electrode, the winding device is installed on the handle, the grounding wire is wound around the winding device and is electrically connected to the grounding electrode when measuring the grounding resistance, and is used to measure the grounding resistance; The winding device comprises a cross bar and two annular winding grooves respectively arranged at two ends of the cross bar, and the annular winding grooves are used for winding the ground wire.

2. The ground resistance auxiliary test tool according to claim 1, characterized in that: It also includes a hub disposed on the crossbar, and the hub is rotatably matched with the handle.

3. The ground resistance auxiliary test tool according to claim 2, characterized in that: The cross bar is provided with a driving handle, which is used to make the cross bar move in a circle around the handle when winding the ground wire.

4. The ground resistance auxiliary test tool according to claim 1, characterized in that: The annular winding groove is a "U"-shaped opening groove, and the maximum diameter of the opening of the annular winding groove is 55mm.

5. The ground resistance auxiliary test tool according to claim 1, characterized in that: It also includes a grounding wire clamp, which is connected to the grounding wire and is electrically connected to the grounding electrode when measuring resistance.

6. The ground resistance auxiliary test tool according to claim 1, characterized in that: It also includes a wrench, one end of which is a hollow rod-shaped structure for accommodating the grounding electrode, and the other end of which is used for removing the nut.

7. The ground resistance auxiliary test tool according to claim 1, characterized in that: It also includes a ground resistance meter, which is connected to the ground probe through a ground wire when measuring the ground resistance.

8. The ground resistance auxiliary test tool according to claim 2, characterized in that: Also included is a connecting rod, which is inserted into the handle and rotatably matched with the wheel hub.

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