Insulation resistance testing device for electric power test cable

Abstract

The utility model belongs to the technical field of electric power detection, and particularly relates to an electric power test cable insulation resistance testing device which comprises a box body, a fixing plate, a box cover, an insulation resistance tester, two test probes, two mounting seats, a support adjusting assembly, a lifting plate, two H-shaped plates, a reset assembly, two support buffer assemblies and two limiting clamping plates. The fixing plate is fixedly installed on the inner side wall of the box body, two circular openings located in the same axial direction are formed in the positions, located above the fixing plate, of the two sides of the box body, and the box cover is detachably installed at the top of the box body. The insulation resistance tester is reasonable in design, simple in structure and convenient to operate and carry, interference of external factors on test results of the insulation resistance tester can be reduced, the distance between the test probes can be automatically adjusted, and the insulation resistance tester can well adapt to tests of cables of different sizes; and the stability of the cable can be ensured in the test process.

Description

TECHNICAL FIELD

[0001] The utility model relates to power detection technical field, especially a kind of power cable insulation resistance testing device. BACKGROUND

[0002] In the field of power cable detection, it is crucial to ensure the accurate assessment of cable insulation performance. Traditional cable insulation resistance testing faces many challenges. In the past, the key components such as insulation resistance tester and test probe lack effective protection during transportation, and are easily damaged in bumpy and collision environment, resulting in high equipment failure rate and affecting work progress. Moreover, the complex electromagnetic field environment often interferes with test data, making the accuracy of test results greatly discounted, and causing deviation in the judgment of cable insulation state.

[0003] The widespread application of cables of different sizes also poses diversified needs for testing devices. Traditional devices usually require manual adjustment of test distance and manual operation of test probe for clamping, which is not only cumbersome but also requires high skills of operators, increasing the risk of human error. In addition, the stability of the cable during testing is difficult to guarantee, and the shaking of the cable can seriously affect the reliability of the test data.

[0004] These problems urgently need an innovative testing device to solve, in order to improve the efficiency, accuracy and safety of power cable insulation resistance testing.

[0005] The information disclosed in this background section is intended only to increase an understanding of the general context of the present utility model, and should not be taken as an acknowledgement or implication that this information constitutes prior art that is already widely known in the art. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims to solve the shortcomings mentioned in the background technology and proposes a power cable insulation resistance testing device.

[0007] The above technical purpose of the utility model is achieved through the following technical solution: a power cable insulation resistance testing device, comprising a box body, a fixed plate, a box cover, an insulation resistance tester, two test probes, two mounting seats, a support adjustment assembly, a lifting plate, two H-shaped plates, a reset assembly, two support buffer assemblies and two limiting clamping plates.

[0008] The fixed plate is fixedly installed on the inner side wall of the box body, two circular openings in the same axial direction are formed on the positions above the fixed plate on the two sides of the box body, the box cover is detachably installed on the top of the box body, the inner wall of the box body and the bottom side of the box cover are both provided with shielding layers, the lifting plate is slidingly installed on the inner side wall of the box body, two mounting seats are both slidingly installed on the bottom side of the lifting plate, the support adjusting assembly is arranged on the bottom side of the lifting plate and connected with the two mounting seats, the insulation resistance tester is arranged on the top side of the lifting plate, two test probes are both fixedly installed on the bottom side of the two mounting seats, and the two test probes are both electrically connected with the insulation resistance tester.

[0009] The two H-shaped plates are both slidingly installed on the fixed plate and arranged in parallel with each other, and both are fixedly connected with the bottom side of the lifting plate, the support buffer assembly is arranged on the two H-shaped plates and connected with the two limiting clamping plates, and the reset assembly is arranged on the bottom side of the two H-shaped plates and connected with the bottom side of the fixed plate.

[0010] Preferably, the support adjusting assembly comprises two support strips, an adjusting motor and a bidirectional screw rod, the bottom side of the lifting plate is fixedly installed with two support strips arranged in parallel with each other, the same bidirectional screw rod is rotatably installed on the two support strips and threadedly connected with the two mounting seats, one of the support strips is fixedly installed with the adjusting motor, and the output shaft of the adjusting motor is axially fixedly connected with the bidirectional screw rod.

[0011] Preferably, the same guide rod is fixedly installed on the two support strips and slidingly connected with the two mounting seats.

[0012] Preferably, the reset assembly comprises a plurality of springs and two supporting plates, the bottom side of each of the two H-shaped plates is fixedly installed with a supporting plate, and the top side of each of the two supporting plates is fixedly installed with a plurality of springs fixedly connected with the bottom side of the fixed plate.

[0013] Preferably, the support buffer assembly comprises two strip-shaped plates, two sliding rods and two springs, the sliding rods are slidingly installed on the two H-shaped plates, the top ends of the two sliding rods are fixedly installed with the strip-shaped plates slidingly connected with the corresponding H-shaped plates, the bottom ends of the two sliding rods are respectively fixedly connected with the corresponding limiting clamping plates, the top sides of the two limiting clamping plates are fixedly installed with the springs, and the top ends of the two springs are respectively fixedly connected with the corresponding H-shaped plates.

[0014] Preferably, the top side of the lifting plate is fixedly installed with a U-shaped rod slidingly connected with the box cover.

[0015] Preferably, the two sides of the box body are both threadedly installed with limiting lead screws, two limiting holes are formed in the U-shaped rod, and the two limiting lead screws are respectively inserted and installed in the corresponding limiting holes.

[0016] Preferably, the two side inner walls of the box are fixedly provided with support blocks, the top sides of the two support blocks are fixedly provided with vertical rods, and the two vertical rods are slidably connected with the lifting plate and are arranged in parallel with each other.

[0017] Preferably, the front and rear sides of the box and the box cover are respectively provided with observation windows one and two.

[0018] Preferably, the two circular openings are both provided with protective plugs.

[0019] The utility model discloses the beneficial effect is:

[0020] Through the box and the box cover, the insulation resistance tester and the test probe and other structures can be protected, and damage caused by collision during transportation can be avoided, and through the shielding layer, the electromagnetic field in the box and the box cover can be shielded, the test data of the insulation resistance tester can be prevented from being disturbed by the electromagnetic field, the accuracy of the test data can be improved, and through the support adjusting assembly, the spacing between the two mounting seats can be adjusted as required, so that the spacing between the two test probes can be controlled, insulation resistance test operation on cables of different sizes can be facilitated, and through the reset assembly, the lifting plate can be controlled to move downward through the H-shaped plate after the U-shaped rod is loosened, so that the test probe can be controlled to move downward and perform insulation resistance test operation on the cable to be tested, the test probe does not need to be manually controlled to clamp the cable to be tested, and the operation difficulty is reduced.

[0021] Through the support buffer assembly, the limiting clamping plate can be provided with support and buffer effects, so that the limiting clamping plate can stably limit and press the cable to be tested, and the accuracy of the test data can be prevented from being affected by shaking of the cable during the test. Through the U-shaped rod and the limiting lead screw, the lifting plate can be controlled to move upward without opening the box cover, the U-shaped rod can be limited as required, and the limiting state of the U-shaped rod and the box cover can be conveniently and quickly released, so that the insulation resistance tester can be operated without opening the box cover, and the utility is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0023] Figure 1 A three-dimensional structure schematic view of a power cable insulation resistance test device is provided in the utility model.

[0024] Figure 2 is a sectional view structure schematic diagram; Figure 1

[0025] Figure 3 is a structure schematic diagram of the support adjusting assembly, the guide rod and the mounting seat and the test probe part provided by the utility model;

[0026] Figure 4 is a local three-dimensional structure schematic diagram of the utility model;

[0027] Figure 5 is a local three-dimensional structure schematic diagram; Figure 4

[0028] Figure 6 is a structure schematic diagram of the U-shaped rod and the limiting screw rod part provided by the utility model.

[0029] In the drawing: 1, box body; 101, observation window one; 102, protection plug; 11, box cover; 111, limiting screw rod; 112, U-shaped rod; 113, observation window two; 12, shielding layer; 2, fixed plate; 21, H-shaped plate; 22, supporting plate; 23, spring one; 3, sliding rod; 31, limiting clamping plate; 32, spring two; 33, strip-shaped plate; 4, lifting plate; 5, mounting seat; 51, supporting strip; 52, bidirectional screw rod; 53, adjusting motor; 54, guide rod; 6, insulation resistance tester; 61, test probe. DETAILED DESCRIPTION

[0030] The technical scheme of the utility model will be described clearly and completely in combination with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] Referring to Figures 1-6 , a kind of power cable insulation resistance testing device, including box body 1, fixed plate 2, box cover 11, insulation resistance tester 6, two test probes 61, two mounting seats 5, lifting plate 4, two H-shaped plates 21 and two limiting clamping plates 31, fixed plate 2 is fixedly installed on the inner side wall of box body 1, two circular ports in the same axial direction are set on the position of the two sides of box body 1 above fixed plate 2, box cover 11 can be detachably installed on the top of box body 1, the inner wall of box body 1 and the bottom side of box cover 11 are all provided with shielding layer 12, lifting plate 4 is slidably installed on the inner side wall of box body 1;

[0032] ​​The top side of the lifting plate 4 is fixedly provided with a U-shaped rod 112 in sliding connection with the box cover 11, facilitating the upward movement of the lifting plate 4 without opening the box cover 11. The two mounting seats 5 are both slidingly mounted on the bottom side of the lifting plate 4. The insulation resistance tester 6 is arranged on the top side of the lifting plate 4. The two test probes 61 are both fixedly arranged on the bottom side of the corresponding mounting seat 5 and are electrically connected with the insulation resistance tester 6. In order to facilitate the observation of the placement state of the test cable in the box body 1, the observation window two 113 is arranged to facilitate the direct observation of the test data of the insulation resistance tester 6 without opening the box cover 11. The observation window one 101 and the observation window two 113 are arranged on the front and rear sides of the box body 1 and the box cover 11 respectively.

[0033] The bottom side of the lifting plate 4 is fixedly provided with two support strips 51 arranged in parallel with each other. The two support strips 51 are rotatably provided with a same bidirectional screw rod 52 in threaded connection with the two mounting seats 5. One of the support strips 51 is fixedly provided with an adjusting motor 53. The output shaft of the adjusting motor 53 is axially fixedly connected with the bidirectional screw rod 52. The spacing between the two mounting seats 5 can be adjusted as required, so as to control the spacing between the two test probes 61. In order to provide guiding and supporting effects for the two mounting seats 5, a same guiding rod 54 is fixedly arranged on the two support strips 51 and is in sliding connection with the two mounting seats 5.

[0034] The two H-shaped plates 21 are both slidingly mounted on the fixed plate 2 and are arranged in parallel with each other. The bottom side of each of the two H-shaped plates 21 is fixedly provided with a supporting plate 22. The top side of each of the two supporting plates 22 is fixedly provided with a plurality of spring one 23 in fixed connection with the bottom side of the fixed plate 2. After the U-shaped rod 112 is loosened, the H-shaped plate 21 can be used to control the downward movement of the lifting plate 4, so as to control the downward movement of the test probe 61 and perform the insulation resistance test operation on the cable to be tested.

[0035] The two H-shaped plates 21 are both slidingly mounted on the fixed plate 2 and are arranged in parallel with each other. The bottom side of each of the two H-shaped plates 21 is fixedly provided with a supporting plate 22. The top side of each of the two supporting plates 22 is fixedly provided with a plurality of spring one 23 in fixed connection with the bottom side of the fixed plate 2. After the U-shaped rod 112 is loosened, the H-shaped plate 21 can be used to control the downward movement of the lifting plate 4, so as to control the downward movement of the test probe 61 and perform the insulation resistance test operation on the cable to be tested.

[0036] In the embodiment, in order to limit the box cover 11, and also to limit the U-shaped rod 112 according to the need, and to conveniently and quickly release the limiting state of the U-shaped rod 112 and the box cover 11, the two sides of the box body 1 are threadedly installed with limiting lead screws 111, the U-shaped rod 112 is provided with two limiting holes, and the two limiting lead screws 111 are respectively inserted and installed in the corresponding limiting holes. In the state that the U-shaped rod 112 is limited, the device can be carried by the U-shaped rod 112.

[0037] In the embodiment, in order to ensure the stable lifting of the lifting plate 4, the two inner walls of the box body 1 are fixedly installed with supporting blocks, the top sides of the two supporting blocks are fixedly installed with vertical rods, and the two vertical rods are slidably connected with the lifting plate 4 and are arranged in parallel with each other.

[0038] In the embodiment, the two circular ports are clamped and installed with protective plugs 102, which can block the circular ports when the device is not used, so as to avoid that foreign matters enter the box body 1 through the circular ports.

[0039] The existing technology is adopted for the circuits, electronic components and module mechanisms, and the skilled person in the art can realize it without further description. The content protected by the application does not involve the improvement of software, circuits and methods.

[0040] Working principle: in use, first, the device is carried to the position where the cable insulation resistance needs to be detected by the U-shaped rod 112, then the limiting lead screw 111 is rotated and separated from the limiting hole, so that the limiting state of the U-shaped rod 112 is released, the protective plug 102 is pulled out, and the cable to be tested is inserted into the position below the test probe 61 after being processed. In this process, the U-shaped rod 112 is manually controlled to move upward, so that the lifting plate 4, the limiting clamping plate 31 and the test probe 61 can be synchronized upward. The state of the cable to be tested in the box body 1 is observed through the observation window one 101 and manually adjusted, so that the cable is located below the two limiting clamping plates 31. Then, the U-shaped rod 112 is loosened, and the H-shaped plate 21 drives the lifting plate 4 to move downward under the action of the two supporting plates 22 and the plurality of springs one 23. In this process, the limiting clamping plate 31 first contacts the cable and continues to move downward with the lifting plate 4, so that the two limiting clamping plates 31 stably limit the position of the cable. Then, the distance between the two mounting seats 5 is adjusted by rotating the bidirectional lead screw 52 controlled by the motor 53, so that the two test probes 61 are adjusted to the upper side of the position to be detected. With the descent of the lifting plate 4, the test probe 61 can detect the insulation resistance of the cable. The test data of the insulation resistance tester 6 can be directly observed without opening the box cover 11 through the observation window two 113.

[0041] The power cable insulation resistance testing device is described in detail. The principle and implementation of the utility model are described by using specific examples. The above examples are only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary skilled persons in the technical field, the utility model can be improved and modified without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. A power cable insulation resistance testing device, characterized by, The utility model relates to an insulation resistance tester, including box (1), fixed plate (2), box cover (11), insulation resistance tester (6), two test probes (61), two mounting seat (5), support adjustment assembly, lifting plate (4), two H shaped board (21), reset component, two support buffer assembly and two spacing clamping plate (31), the utility model discloses a support adjustment assembly, insulation resistance tester, two test probes, two mounting seat, lifting plate, two H shaped board, reset component, two support buffer assembly and two spacing clamping plate are provided, and the insulation resistance tester is tested to the insulation resistance of the electric appliance. The fixed plate (2) is fixedly installed on the inner side wall of the box (1), two circular openings in the same axial direction are formed on the two sides of the box (1) above the fixed plate (2), the box cover (11) is detachably installed on the top of the box (1), shielding layers (12) are arranged on the inner wall of the box (1) and the bottom side of the box cover (11), the lifting plate (4) is slidably installed on the inner side wall of the box (1), the two mounting seats (5) are slidably installed on the bottom side of the lifting plate (4), the support adjustment assembly is arranged on the bottom side of the lifting plate (4) and connected with the two mounting seats (5), the insulation resistance tester (6) is arranged on the top side of the lifting plate (4), the two test probes (61) are fixedly installed on the bottom side of the two mounting seats (5) respectively, and the two test probes (61) are electrically connected with the insulation resistance tester (6). The two H-shaped boards (21) are slidably installed on the fixed plate (2) and arranged in parallel with each other, and the two H-shaped boards (21) are fixedly connected with the bottom side of the lifting plate (4), the support buffer assembly is arranged on the two H-shaped boards (21) and connected with the two spacing clamping plates (31), and the reset component is arranged on the bottom side of the two H-shaped boards (21) and connected with the bottom side of the fixed plate (2).

2. A power cable insulation resistance testing device according to claim 1, characterized in that: The support adjustment assembly comprises two support strips (51), an adjusting motor (53) and a bidirectional screw rod (52), the bottom side of the lifting plate (4) is fixedly installed with two support strips (51) arranged in parallel with each other, the same bidirectional screw rod (52) is rotatably installed on the two support strips (51) and threadedly connected with the two mounting seats (5), one of the support strips (51) is fixedly installed with the adjusting motor (53), and the output shaft of the adjusting motor (53) is axially fixedly connected with the bidirectional screw rod (52).

3. A power cable insulation resistance testing device according to claim 2, characterized in that: The same guide rod (54) is fixedly installed on the two support strips (51) and slidably connected with the two mounting seats (5).

4. The power cable insulation resistance testing device according to claim 1, characterized in that: The reset component comprises a plurality of springs (23) and two supporting plates (22), the bottom side of each of the two H-shaped boards (21) is fixedly installed with a supporting plate (22), and the top side of each of the two supporting plates (22) is fixedly installed with a plurality of springs (23) fixedly connected with the bottom side of the fixed plate (2).

5. The power cable insulation resistance testing device according to claim 1, characterized in that: The support buffer assembly comprises two strip-shaped plates (33), two slide rods (3) and two springs (32), the slide rod (3) is slidably installed on each of the two H-shaped plates (21), the top end of each of the two slide rods (3) is fixedly installed with the strip-shaped plate (33) which is slidably connected with the corresponding H-shaped plate (21), the bottom end of each of the two slide rods (3) is fixedly connected with the corresponding limiting clamping plate (31), the top side of each of the two limiting clamping plates (31) is fixedly installed with the spring (32), and the top end of each of the two springs (32) is fixedly connected with the corresponding H-shaped plate (21).

6. The power cable insulation resistance testing device according to claim 1, characterized in that: The top side of the lifting plate (4) is fixedly installed with the U-shaped rod (112) which is slidably connected with the box cover (11).

7. A power cable insulation resistance testing device according to claim 6, characterized in that: The two sides of the box body (1) are threadedly installed with the limiting lead screws (111), the U-shaped rod (112) is provided with two limiting holes, and the two limiting lead screws (111) are respectively inserted and installed in the corresponding limiting holes.

8. The power cable insulation resistance testing device according to claim 1, characterized in that: The two sides of the box body (1) are fixedly installed with the supporting blocks, the top side of each of the two supporting blocks is fixedly installed with the vertical rod, and the two vertical rods are slidably connected with the lifting plate (4) and are arranged in parallel with each other.

9. The power cable insulation resistance testing device according to claim 1, characterized in that: The front and rear sides of the box body (1) and the box cover (11) are respectively provided with the observation window (101) and the observation window (113).

10. The power cable insulation resistance testing device according to claim 1, characterized in that: The two circular openings are both fixedly installed with the protective plugs (102).

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