一种接地电阻测试仪
By incorporating an insulating plate and adjustable support feet into the grounding resistance tester, the problems of moisture and stray potential in water-accumulated environments are solved, achieving both moisture protection and improved testing accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGYUAN ELECTRICITY DESIGN CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing grounding resistance testers are susceptible to moisture in water or liquid environments, which affects the normal operation of electronic components and the accuracy of the test is affected by stray ground potential.
A grounding resistance tester including an insulating plate and adjustable support feet was designed. The insulating plate is insulated from the ground, and the angle and height of the support feet are adjusted by a limiting mechanism and an elastic reset component to prevent water accumulation and reduce the influence of stray potential.
It effectively prevents the internal electronic components of the tester from getting damp, improves test accuracy, and ensures normal equipment operation and accurate test results.
Smart Images
Figure CN224518850U_ABST
Abstract
Claims
1. A ground resistance tester characterized by, The test body includes an insulating plate (3) fixed to the bottom of the test body (1) and a support foot that is adjustablely installed on the bottom of the insulating plate (3) by a limiting mechanism. The limiting mechanism includes a support block (4) fixed to the insulating plate (3). The first slot of the support block (4) is provided with a protrusion that is rotatably connected to the support foot. The first slot is provided with an arc-shaped boss that cooperates with the support foot. The arc-shaped boss is provided with two positioning holes (14). The axis of one positioning hole (14) is parallel to the bottom surface of the insulating plate (3), and the axis of the other positioning hole (14) is perpendicular to the bottom surface of the insulating plate (3). A positioning pin (15) is slidably connected inside the support foot. The positioning pin (15) cooperates with one of the positioning holes (14) through an elastic reset component installed on the support foot.
2. The ground resistance tester of claim 1, wherein, The elastic reset assembly includes a compression spring (16) installed inside the support foot. One end of the compression spring (16) is connected to one end of the positioning pin (15), and the positioning pin (15) is inserted into the positioning hole (14) under the action of the compression spring (16). A second slot is provided on the side wall of the support foot, and a movable rod that passes through the second slot is fixed on the positioning pin (15).
3. The ground resistance tester of claim 2, wherein, A movable plate (6) is fixed to the end of the movable rod that passes through the second slot. The length and width of the movable plate (6) are both greater than the second slot. During the movement of the movable plate (6), the movable plate (6) always blocks and isolates the second slot.
4. The ground resistance tester of claim 1, wherein, The support foot includes a rotating block (5) rotatably connected to the support block (4), a fixed rod (7) provided on the rotating block (5), and a support rod (9) threadedly connected to the fixed rod (7); the support rod (9) has a support head at one end away from the fixed rod (7).
5. The ground resistance tester of claim 4, wherein, The support rod (9) has several rotating bosses (8) distributed circumferentially.
6. The ground resistance tester of claim 4, wherein, The support head includes a pointed cone rod (13) mounted on the support rod (9).
7. The ground resistance tester of claim 6, wherein, The support head also includes a funnel-shaped support seat (11) fixed to the support rod (9). The pointed rod (13) is slidably connected to the inside of the support rod (9) through an adjustment component. The axis of the pointed rod (13) coincides with the support seat (11). The pointed tip of the pointed rod (13) is retracted or extended out of the inner cavity of the support seat (11) through the adjustment component.
8. The ground resistance tester of claim 7, wherein, The adjustment assembly includes a wing bolt (10) threadedly connected to the support rod (9). The end of the wing bolt (10) penetrates the side wall of the support rod (9). The pointed rod (13) is provided with a third slot. The end of the wing bolt (10) is pressed tightly against the bottom of the third slot.
9. The ground resistance tester of claim 7, wherein, A rubber pad (12) is fixed to the inner cavity of the support base (11), and the rubber pad (12) is provided with a through hole to facilitate the movement of the pointed rod (13).
10. The ground resistance tester of any one of claims 1-9, wherein, The bottom of the insulating plate (3) is provided with a support ring plate (2), and the cross-section of one side wall of the support ring plate (2) is L-shaped. When not in use, the support foot is located inside the support ring plate (2).