CN210572501U

CN210572501U - Adjustable earth resistance tester

Info

Publication number: CN210572501U
Application number: CN201921244661.3U
Authority: CN
Inventors: 王伟
Original assignee: Tianjin Wei'an Xinyang Safety And Health Evaluation And Monitoring Co Ltd
Current assignee: Tianjin Wei'an Xinyang Safety And Health Evaluation And Monitoring Co Ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-05-19
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses an adjustable ground resistance tester relates to ground resistance tester technical field, including the instrument box, the instrument box is rectangle box structure, and the upper end opening part block of instrument box has the case lid, and the fixed welding of the inside bottom surface intermediate position of instrument box has the adapter sleeve, is connected with electric putter through the screw rod in the adapter sleeve. The utility model protects the grounding resistance tester body through the instrument box, improves the waterproof and dustproof performance of the grounding resistance tester body, has good anti-falling performance, and prolongs the service life of the grounding resistance tester body; the grounding column and the metal conducting ring which are protruded out of the lower surface of the instrument box are arranged in the utility model, so that the grounding is ensured to be good, and the use safety of the instrument is improved; the utility model discloses well ground resistance tester body can adjust in the instrument shelter and go up and down, facilitates the use, and installs the dismouting maintenance convenience, is fit for promoting.

Description

Adjustable earth resistance tester

Technical Field

The utility model relates to an earth resistance tester technical field specifically is adjustable earth resistance tester.

Background

The ground resistance tester abandons the traditional manual hand-operated power generation working mode, adopts an advanced large-scale integrated circuit, and applies a DC/AC conversion technology to combine a three-terminal button and four-terminal button measurement mode into a novel digital ground resistance tester of a machine type, but the ground resistance tester still has the following defects in the actual use process:

1. in the prior art, the grounding resistance tester is often inconvenient to carry, is exposed outside when in use, and has poor falling resistance and water and dust resistance;

2. in the prior art, the grounding resistance tester is inconvenient to adjust the height according to actual requirements when in use, and the grounding end cannot be grounded well sometimes, so that the use safety is low.

Therefore, we propose an adjustable grounding resistance tester to well solve the above drawbacks.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adjustable ground resistance tester to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an adjustable grounding resistance tester comprises an instrument box, wherein the instrument box is of a rectangular box body structure, a box cover is clamped at an opening at the upper end of the instrument box, a connecting sleeve is fixedly welded at the middle position of the inner bottom surface of the instrument box, an electric push rod is connected in the connecting sleeve through a screw rod, the upper end of the electric push rod is matched and clamped in a clamping cylinder at the lower surface of a placing box, a cushion pad is fixedly arranged on the inner wall of the upper part of the placing box, a grounding resistance tester body is placed on the placing box, a grounding hole is formed in the lower surface of the instrument box, a grounding column is movably inserted in the grounding hole, a conductive limiting mounting plate is integrally arranged at the upper end of the grounding column, a metal conductive ring is movably sleeved at the outer ring of the lower end of the grounding column, the diameter of the outer ring of the metal, the upper end of the metal conductive spring is fixedly welded on the lower surface of the conductive limiting mounting plate, the upper end of the conductive limiting mounting plate is connected with a grounding wire, and the upper end of the grounding wire movably penetrates through a grounding wire preformed hole in the placing box and is electrically connected with a grounding end on the grounding resistance tester body.

Preferably, a handle is fixedly welded in the middle of the upper surface of the box cover and is of a concave structure.

Preferably, the placing box is of a concave box body structure, and the clamping cylinder is fixedly welded in the middle of the lower surface of the placing box.

Preferably, the outer ring of the placing box is fixedly provided with a rubber sealing gasket, and the rubber sealing gasket is movably attached to the inner wall of the instrument box.

Preferably, the grounding hole penetrates through the inner side and the outer side of the lower surface of the instrument box, and the grounding hole is of a circular hole-shaped structure.

Preferably, the diameter of the conductive limiting mounting plate is larger than that of the grounding hole, and the edge of the conductive limiting mounting plate is fixed on the bottom surface of the instrument box through a screw.

Preferably, both ends all are connected with stop screw through screw-thread fit about the upper end inner wall of instrument case, and stop screw sets up directly over placing box edge department.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model protects the grounding resistance tester body through the instrument box, improves the waterproof and dustproof performance of the grounding resistance tester body, has good anti-falling performance, and prolongs the service life of the grounding resistance tester body;

2. the grounding column and the metal conducting ring which are protruded out of the lower surface of the instrument box are arranged in the utility model, so that the grounding is ensured to be good, and the use safety of the instrument is improved;

3. the utility model discloses well ground resistance tester body can adjust in the instrument shelter and go up and down, facilitates the use, and installs the dismouting maintenance convenience, is fit for promoting.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1 according to the present invention;

fig. 4 is an enlarged schematic view of the structure at C in fig. 1 according to the present invention.

In the figure: 1. an instrument box; 2. a box cover; 3. a ground resistance tester body; 4. a handle; 5. a limit screw; 6. a rubber gasket; 7. placing the box; 8. clamping the cylinder; 9. a cushion pad; 10. an electric push rod; 11. connecting sleeves; 12. a ground hole; 13. a ground post; 14. a ground line; 15. a reserved hole of the grounding wire; 16. a conductive limit mounting plate; 17. a metal conductive spring; 18. a metal conductive ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): please refer to fig. 1, which is the adjustable ground resistance tester disclosed by the present invention, comprising an instrument box 1, wherein the instrument box 1 is a rectangular box structure, a box cover 2 is fastened at an opening at the upper end of the instrument box 1, a handle 4 is fixedly welded at the middle position of the upper surface of the box cover 2, the handle 4 is a concave structure, the handle 4 is convenient for carrying the instrument box 1, and the purpose of portable ground resistance tester body 3 is achieved;

fixed welding has adapter sleeve 11 in the inside bottom surface intermediate position of instrument case 1, be connected with electric putter 10 through the screw rod in adapter sleeve 11, ANT-26 can be used to electric putter 10's model, but not limited to the electric putter of this type, for current common technique, can select according to the actual demand, do not do the repeated description here, electric putter 10's upper end matches the block and is placing in the card section of thick bamboo 8 of box 7 lower surface, it is character cut in bas-relief box body structure to place

box

7, 8 fixed welding of a card section of thick bamboo are in the intermediate position of placing 7 lower surfaces of box, a card section of thick bamboo 8 is used for placing 10 upper ends of electric putter, make things convenient for the block to place box 7, it is.

Please refer to fig. 3, a buffer pad 9 is fixedly arranged on the inner wall above the placing box 7, the grounding resistance tester body 3 is placed on the placing box 7, a rubber sealing gasket 6 is fixedly arranged at the outer ring of the placing box 7, the rubber sealing gasket 6 is movably attached to the inner wall of the instrument box 1, the rubber sealing gasket 6 avoids rigid abrasion between the placing box 7 and the instrument box 1, the service life of the device is prolonged, the sealing property of the bottom end of the placing box 7 is ensured, the waterproof and dustproof use is facilitated, and the electrical appliance is isolated.

Referring to fig. 1 to 2, a ground hole 12 is formed in the lower surface of an instrument case 1, the ground hole 12 penetrates through the inner side and the outer side of the lower surface of the instrument case 1, the ground hole 12 is a circular hole-shaped structure, a ground post 13 is movably inserted into the ground hole 12, a conductive limiting mounting plate 16 is integrally arranged at the upper end of the ground post 13, a metal conductive ring 18 is movably sleeved at the outer ring of the lower end of the ground post 13, the outer ring diameter of the metal conductive ring 18 is equal to the diameter of the ground hole 12, a metal conductive spring 17 is fixedly welded to the upper surface of the metal conductive ring 18, the upper end of the metal conductive spring 17 is fixedly welded to the lower surface of the conductive limiting mounting plate 16, a ground wire 14 is connected to the upper end of the conductive limiting mounting plate 16, the length of the ground wire 14 is designed to be longer, the connection length when the ground resistance tester body 3 is taken out, the internal device can be conveniently disassembled and replaced, and the upper ground terminal is electrically connected.

Wherein, the diameter of electrically conductive spacing mounting panel 16 is greater than the diameter of ground connection hole 12, and the edge of electrically conductive spacing mounting panel 16 passes through the fix with screw on the inside bottom surface of instrument case 1, fixed easy dismounting, easy to overhaul.

All be connected with stop screw 5 through screw-thread fit about the upper end inner wall of instrument case 1, stop screw 5 sets up directly over placing 7 edges of box, stop screw 5 has played the restriction and has placed the purpose that box 7 can not excessively shift up, the risk that ground resistance tester body 3 dropped can not appear when making electric putter 10 control ground resistance tester body 3 go up and down, stability is higher, and demolish the back to stop screw 5, can take out ground resistance tester body 3 and place box 7, make things convenient for the dismouting to use.

The implementation principle of the embodiment is as follows: firstly, the grounding resistance tester body 3 is placed in the placing box 7 in the instrument box 1 for storage, and the electric push rod 10 can control the grounding resistance tester body 3 on the placing box 7 to lift, so that the height of the grounding resistance tester body 3 can be adjusted.

Through ground connection 14 electric connection between ground resistance tester body 3 and the ground connection post 13, the lower extreme of ground connection post 13 salient sets up in instrument case 1 lower surface, the landing leg and the ground contact that act as instrument case 1, guarantee ground resistance tester body 3 ground connection and use, and the electrically conductive spacing mounting panel 16 lower surface of ground connection post 13 upper end is connected with metal conducting ring 18 through metal conducting spring 17, the elastic force effect of metal conducting spring 17, make metal conducting ring 18 remain throughout with ground contact, double ground protection, the security is higher when making ground resistance tester body 3 use.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. Adjustable ground resistance tester, including instrument case (1), its characterized in that: the instrument box (1) is of a rectangular box structure, a box cover (2) is clamped at an upper end opening of the instrument box (1), a connecting sleeve (11) is fixedly welded at the middle position of the inner bottom surface of the instrument box (1), an electric push rod (10) is connected in the connecting sleeve (11) through a screw rod, the upper end of the electric push rod (10) is clamped in a clamping cylinder (8) of the lower surface of a placing box (7) in a matching manner, a cushion pad (9) is fixedly arranged on the inner wall of the upper part of the placing box (7), a grounding resistance tester body (3) is placed on the placing box (7), a grounding hole (12) is formed in the lower surface of the instrument box (1), a grounding column (13) is movably inserted in the grounding hole (12), a conductive limiting mounting plate (16) is integrally arranged at the upper end of the grounding column (13), and a metal conductive ring (18) is movably sleeved at, the outer lane diameter of metal conducting ring (18) equals the diameter of ground connection hole (12), and the last fixed surface welding of metal conducting ring (18) has metal conductive spring (17), and the fixed welding in the lower surface of electrically conductive spacing mounting panel (16) in upper end of metal conductive spring (17), the upper end of electrically conductive spacing mounting panel (16) is connected with earth connection (14), and the upper end activity of earth connection (14) is passed earth connection preformed hole (15) on placing box (7) and with earthing terminal electric connection on ground resistance tester body (3).

2. The adjustable ground resistance tester of claim 1, wherein: the middle position of the upper surface of the box cover (2) is fixedly welded with a handle (4), and the handle (4) is of a concave structure.

3. The adjustable ground resistance tester of claim 1, wherein: the placing box (7) is of a concave box body structure, and the clamping cylinder (8) is fixedly welded in the middle of the lower surface of the placing box (7).

4. The adjustable ground resistance tester of claim 1, wherein: the outer ring of the placing box (7) is fixedly provided with a rubber sealing gasket (6), and the rubber sealing gasket (6) is movably attached to the inner wall of the instrument box (1).

5. The adjustable ground resistance tester of claim 1, wherein: the grounding hole (12) penetrates through the inner side and the outer side of the lower surface of the instrument box (1), and the grounding hole (12) is of a round hole-shaped structure.

6. The adjustable ground resistance tester of claim 1, wherein: the diameter of the conductive limiting mounting plate (16) is larger than that of the grounding hole (12), and the edge of the conductive limiting mounting plate (16) is fixed on the bottom surface of the inside of the instrument box (1) through a screw.

7. The adjustable ground resistance tester of claim 1, wherein: both ends all are connected with stop screw (5) through screw-thread fit about the upper end inner wall of instrument case (1), and stop screw (5) set up and place box (7) edge directly over.