Test board of insulation resistor

Abstract

The invention relates to the field of insulation resistance test benches, in particular to an insulation resistance test bench which comprises a test bench body, fixing frames are arranged on the top of the test bench body, an insulation resistance tester body is placed on the tops of the fixing frames, and an auxiliary test assembly is movably arranged between the fixing frames. A test assembly is arranged between the auxiliary test assembly and the insulation resistance tester body; according to the insulation resistance tester, through the cooperative arrangement of the clamping assembly and the bidirectional lead screw driving assembly, resistors of different shapes in a certain range can be clamped conveniently, the stability during subsequent resistance testing is ensured, the measurement error and offset are reduced, and meanwhile, through the testing assembly, the insulation resistance tester body and the auxiliary testing assembly, the stability of the insulation resistance tester is improved. And the insulation test can be conveniently carried out on the limited and clamped resistor.

Description

Technical Field

[0001] The invention relates to the technical field of insulation resistance test benches, and in particular to an insulation resistance test bench. Background Art

[0002] Insulation resistance test bench, commonly known as megohmmeter or insulation resistance tester, is an instrument based on Ohm's law, which evaluates the insulation quality by applying DC voltage to the insulation part of the device under test and measuring the current through the insulating material. It is widely used in power, communication, manufacturing, petrochemical and other industries, mainly used to detect the insulation quality of electrical equipment or lines, prevent electric shock risks, judge equipment reliability, and ensure that the equipment meets regulatory requirements.

[0003] The resistance testing device used requires the operator to hold two probes in contact with the two ends of the resistor, which not only has low test efficiency, but also easily introduces human errors, affecting the accuracy of the test results. Although some existing test devices can limit the clamping of the resistor, it is necessary to replace the appropriate clamping components when clamping resistors of different shapes, and the operation is relatively cumbersome. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose an insulation resistance test bench.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An insulation resistance test bench comprises a test bench, a fixing frame is arranged on the top of the test bench, an insulation resistance tester body is placed on the top of the fixing frame, an auxiliary test component is movably arranged between the fixing frames, and a test component is arranged between the auxiliary test component and the insulation resistance tester body;

[0007] A bidirectional screw drive assembly is arranged in the middle of the test bench, and two sets of clamping assemblies are driven by the bidirectional screw drive assembly at the top of the test bench, the two sets of clamping assemblies are symmetrically arranged, and the clamping assemblies include a fixed clamping block, and a plurality of movable clamping assemblies are equidistantly arranged on one side of the fixed clamping block;

[0008] The movable clamping assembly comprises a limiting slider which is movably arranged in a fixed clamping block, one side of the limiting slider passes through the fixed clamping block and is screwed with a flexible clamping block, and a spring is placed on the other side of the limiting slider.

[0009] Preferably, a limiting slot is provided in the fixed clamping block at the limiting slider, and a through hole is provided on one side of the fixed clamping block away from the flexible clamping block, and a sealing plug is screwed on one side of the fixed clamping block at the through hole.

[0010] Preferably, a spring is provided in the limiting slide groove on one side of the limiting slide block, one side of the spring is in pressing contact with the limiting slide block, and the other side of the spring is in pressing contact with the sealing plug.

[0011] Preferably, the flexible clamping block includes a flexible protrusion portion and a mounting ring, a mounting ring is installed on one side of the flexible protrusion portion, a mounting groove is provided on one side of the mounting ring at the limiting slider, a first external threaded portion is provided in the mounting groove, and a first internal threaded portion is provided on one side of the limiting slider at the first external threaded portion, and the first internal threaded portion is threadedly connected to the first external threaded portion.

[0012] Preferably, the bidirectional screw drive assembly includes a bidirectional screw body, which is driven by a drive motor, and the outer wall of the bidirectional screw body is symmetrically connected to two nut pairs, the top of the nut pair is connected to a fixed clamping block, and a movable cavity is opened in the test bench at the nut pair.

[0013] Preferably, the auxiliary test assembly includes a fixing plate, two fixing screws are symmetrically and evenly spaced horizontally arranged on both sides of the fixing plate, one side of the fixing screw passes through a fixing frame and is threaded with a fixing nut, and a through slot is opened in the fixing frame at the fixing screw.

[0014] Preferably, the test assembly includes two test wires, one side of the test wires is connected to the insulation resistance tester body, the other side of the test wires is connected to a test bump, and one side of the test bump passes through a fixing plate.

[0015] The beneficial effects of the present invention are:

[0016] In the present invention, through the coordinated arrangement of the clamping assembly and the bidirectional screw drive assembly, it is convenient to clamp resistors of different shapes within a certain range, ensure the stability during subsequent resistance testing, reduce its measurement error and offset, and at the same time, through the test assembly, the insulation resistance tester body and the auxiliary test assembly, it is convenient to perform insulation testing on the resistor after limit clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of an insulation resistance test bench proposed by the present invention;

[0018] Figure 2 A schematic diagram of the cross-sectional structure of an insulation resistance test bench proposed by the present invention;

[0019] Figure 3 It is a structural schematic diagram of the cross section of the clamping component;

[0020] Figure 4 A schematic diagram of the cross-section of the clamping assembly.

[0021] In the figure: 1. test bench; 2. bidirectional screw drive assembly; 21. bidirectional screw body; 22. nut pair; 3. auxiliary test assembly; 4. fixed clamping block; 5. movable clamping assembly; 51. limit slider; 52. spring; 53. sealing plug; 54. flexible clamping block; 6. insulation resistance tester body; 7. test assembly. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-4 , an insulation resistance test bench, comprising a test bench 1, a fixing frame is arranged on the top of the test bench 1, an insulation resistance tester body 6 is placed on the top of the fixing frame, an auxiliary test component 3 is movably arranged between the fixing frames, and a test component 7 is arranged between the auxiliary test component 3 and the insulation resistance tester body 6;

[0024] In addition, a bidirectional screw drive assembly 2 is provided in the middle of the test bench 1, and two sets of clamping assemblies are driven by the bidirectional screw drive assembly 2 at the top of the test bench 1, and the two sets of clamping assemblies are symmetrically arranged, and the clamping assemblies include a fixed clamping block 4, and a plurality of movable clamping assemblies 5 are movably arranged at equal distances on one side of the fixed clamping block 4;

[0025] In addition, the movable clamping assembly 5 includes a limiting slider 51, which is movably arranged in the fixed clamping block 4, one side of the limiting slider 51 passes through the fixed clamping block 4 and is screwed with a flexible clamping block 51, and the other side of the limiting slider 51 is placed with a spring 52.

[0026] At the same time, a limiting groove is provided in the fixed clamping block 4 at the limiting slider 51 , and a through hole is provided on one side of the fixed clamping block 4 away from the flexible clamping block 51 , and a sealing plug 53 is screwed on one side of the fixed clamping block 4 at the through hole.

[0027] At the same time, a spring 52 is provided in the limiting sliding groove on one side of the limiting sliding block 51 , one side of the spring 52 is in pressure contact with the limiting sliding block 51 , and the other side of the spring 52 is in pressure contact with the sealing plug 53 .

[0028] In addition, the flexible clamping block 51 includes a flexible protrusion portion and a mounting ring. The mounting ring is installed on one side of the flexible protrusion portion. A mounting groove is provided on one side of the mounting ring at the limiting slider 51. A first external threaded portion is provided in the mounting groove. A first internal threaded portion is provided on one side of the limiting slider 51 at the first external threaded portion. The first internal threaded portion is threadedly connected to the first external threaded portion.

[0029] In addition, the bidirectional screw drive assembly 2 includes a bidirectional screw body 21, which is driven by a driving motor, and the outer wall of the bidirectional screw body 21 is symmetrically connected to two nut pairs 22, the top of the nut pair 22 is connected to the fixed clamping block 4, and a movable cavity is opened in the test bench 1 at the nut pair 22.

[0030] Furthermore, the auxiliary test component 3 includes a fixing plate, two fixing screws are symmetrically and evenly arranged on both sides of the fixing plate, one side of the fixing screw passes through the fixing frame and is screwed with a fixing nut, and a through sliding groove is opened in the fixing frame at the fixing screw.

[0031] Furthermore, the test assembly 7 includes two test wires, one side of the test wires is connected to the insulation resistance tester body 6, the other side of the test wires is connected to a test bump, and one side of the test bump passes through the fixing plate.

[0032] Among them, it is worth noting that the specific structure and working mode of the bidirectional screw drive assembly 2 are existing technologies currently disclosed on the market, and do not belong to the main technical problems to be solved in the present invention. Therefore, they are not elaborated in the present invention. At the same time, the bidirectional screw drive assembly 2 is used to enable the two symmetrically arranged clamping assemblies to move towards each other or back to back.

[0033] Furthermore, it is worth mentioning that the connection method, specific structure and working method of the insulation resistance tester body 6 and the test component 7 are all existing technologies currently disclosed on the market, and do not belong to the main technical problems to be solved in the present invention, so they are not elaborated in the present invention.

[0034] In the present invention, the auxiliary test assembly 3 and the insulation resistance tester body 6 facilitate insulation testing of the resistor after limit clamping.

[0035] Furthermore, the test assembly 7 facilitates the movement of the test bump toward the resistor, and after the test bump is fitted to the resistor, the fixing nut and the fixing screw are tightened to fix the test bump, thereby limiting the position of the test bump.

[0036] The two symmetrically arranged clamping assemblies are driven to move toward or away from each other through the bidirectional screw drive assembly 2. When the resistor to be measured needs to be clamped in a limited position, the two symmetrically arranged clamping assemblies are driven to move toward each other through the bidirectional screw drive assembly 2. The clamping assemblies move toward the outer wall of the resistor. During the movement, the flexible clamping block 54 gradually fits the outer wall of the resistor and drives the corresponding limit sliding block to slide in the limit sliding groove. The spring 52 is used to ensure that the flexible clamping block 54 always fits the outer wall of the resistor.

[0037] When the bidirectional screw drive assembly 2 drives the two symmetrically arranged clamping assemblies to move in opposite directions, the limit slider is reset under the action of the spring 52.

[0038] Furthermore, the spring 52 and the flexible clamping block 54 are both detachable and can be disassembled and replaced when damaged.

[0039] In the present invention, through the coordinated arrangement of the clamping assembly and the bidirectional screw drive assembly 2, it is convenient to clamp resistors of different shapes within a certain range, ensure the stability during subsequent resistance testing, reduce its measurement error and offset, and at the same time, through the test assembly 7, the insulation resistance tester body 6 and the auxiliary test assembly 3, it is convenient to perform insulation testing on the resistor after limit clamping.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A test bench for insulation resistance, comprising a test bench (1), characterized in that: A fixing frame is arranged on the top of the test bench (1), an insulation resistance tester body (6) is placed on the top of the fixing frame, an auxiliary test assembly (3) is movably arranged between the fixing frames, and a test assembly (7) is arranged between the auxiliary test assembly (3) and the insulation resistance tester body (6); A bidirectional screw drive assembly (2) is arranged in the middle of the test bench (1), and two groups of clamping assemblies are driven by the bidirectional screw drive assembly (2) at the top of the test bench (1), the two groups of clamping assemblies are symmetrically arranged, and the clamping assemblies include a fixed clamping block (4), and a plurality of movable clamping assemblies (5) are movably arranged at equal distances on one side of the fixed clamping block (4); The movable clamping assembly (5) comprises a limiting slider (51), which is movably arranged in the fixed clamping block (4), one side of the limiting slider (51) passes through the fixed clamping block (4) and is screwed with a flexible clamping block (51), and the other side of the limiting slider (51) is provided with a spring (52).

2. The insulation resistance test bench according to claim 1, characterized in that: A limiting sliding groove is provided in the fixed clamping block (4) at the limiting sliding block (51), and a through hole is provided on a side of the fixed clamping block (4) away from the flexible clamping block (51), and a sealing plug (53) is screwed on one side of the fixed clamping block (4) at the through hole.

3. The insulation resistance test bench according to claim 2, characterized in that: A spring (52) is arranged in the limiting sliding groove on one side of the limiting sliding block (51); one side of the spring (52) is in pressing contact with the limiting sliding block (51), and the other side of the spring (52) is in pressing contact with the sealing plug (53).

4. The insulation resistance test bench according to claim 1, characterized in that: The flexible clamping block (51) comprises a flexible protrusion portion and a mounting ring, wherein the mounting ring is mounted on one side of the flexible protrusion portion, wherein a mounting groove is provided on one side of the mounting ring at the position of the limiting slider (51), wherein a first external thread portion is provided in the mounting groove, and wherein a first internal thread portion is provided on one side of the limiting slider (51) at the position of the first external thread portion, wherein the first internal thread portion is threadedly connected to the first external thread portion.

5. The insulation resistance test bench according to claim 1, characterized in that: The bidirectional screw drive assembly (2) comprises a bidirectional screw body (21), the bidirectional screw body (21) is driven by a drive motor, and the outer wall of the bidirectional screw body (21) is symmetrically connected to two nut pairs (22), the top of the nut pair (22) is connected to a fixed clamping block (4), and a movable cavity is opened in the test bench (1) at the nut pair (22).

6. The insulation resistance test bench according to claim 1, characterized in that: The auxiliary test assembly (7) comprises a fixing plate, two fixing screws are symmetrically arranged horizontally on both sides of the fixing plate at equal distances, one side of the fixing screw passes through a fixing frame and is screwed with a fixing nut, and a through-slot is opened in the fixing frame at the fixing screw.

7. The insulation resistance test bench according to claim 1, characterized in that: The test assembly (3) comprises two test wires, one side of the test wires is connected to the insulation resistance tester body (6), the other side of the test wires is connected to a test bump, and one side of the test bump passes through a fixing plate.

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