Direct-current resistance tester with high test speed

Abstract

The utility model discloses a direct current resistance tester with fast test speed, which relates to the technical field of direct current resistance testers and comprises an equipment box group and a clamp assembly, a box cover assembly is arranged at the top of the equipment box group, and the clamp assembly is placed on one side, far away from the tester assembly, in the equipment box group. According to the direct-current resistance tester with the high testing speed, the clamp end with the adjusting bolt and the pressing plug with the positioning insertion pile are installed at the two ends of the connecting cable respectively, so that the whole clamp assembly can be stably in structural butt joint with the tester assembly, and meanwhile correct butt joint of the structure is facilitated through cooperation with use of the fool-proof block; the equipment box group and the box cover assembly are matched with the anti-collision corners to provide effective transportation protection for the tester assembly and the clamp assembly, so that the safety of the equipment is improved, and the equipment box group and the box cover assembly are matched with the anti-collision corners.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current resistance testers, in particular to a direct current resistance tester with fast testing speed. Background Art

[0002] DC resistance tester is also called DC resistance measuring instrument, DC resistance meter, transformer DC resistance tester, DC resistance detector, DC digital bridge, etc. DC resistance tester (microohm meter) is a high-precision replacement product that replaces DC single-arm and double-arm bridges. The DC resistance fast tester adopts advanced switching power supply technology and displays the measurement results by dot matrix LCD. It overcomes the disadvantage of other similar products that the LED display value is inconvenient to read in the sun, and has an automatic arc extinguishing function;

[0003] DC resistance test is an essential test item for transformers after handover, overhaul and change of tap changer. Under normal circumstances, it is a time-consuming and labor-intensive task to measure the DC resistance of transformer windings and high-power inductance equipment using traditional methods (bridge method and voltage drop method). In order to change this situation, shorten the measurement time and reduce the workload of testers, a DC resistance fast tester was developed. With a high-speed microcontroller as the core, built-in rechargeable battery and charging circuit, high-speed A / D converter and programmable current source technology, it has achieved unprecedented measurement effects and highly automated measurement functions, with high accuracy, wide measurement range, stable data, good repeatability, strong anti-interference ability, and perfect protection functions. It has the characteristics of fast charging and discharging speed.

[0004] Conventional test fixtures generally use a metal clip structure to connect it to the terminal block. Although this connection method is quick, the use of this structure has certain safety hazards. At the same time, with the increase in the number of uses and the time of use, it is difficult to ensure the stability of the clamping structure during the entire test process, which will affect the accuracy of the test.

[0005] Therefore, in view of this, the existing structure and defects are studied and improved, and a DC resistance tester with fast testing speed is proposed. Utility Model Content

[0006] The utility model aims to provide a DC resistance tester with fast testing speed to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a DC resistance tester with a fast testing speed, comprising an equipment box group and a fixture assembly, a box cover assembly is arranged on the top of the equipment box group, and a damping hinge is connected between the box cover assembly and the equipment box group, and the corners of the equipment box group and the box cover assembly are covered with anti-collision corners, and a tester assembly is installed on one side of the interior of the equipment box group, and the fixture assembly is placed on the side of the interior of the equipment box group away from the tester assembly, and the fixture assembly comprises a connecting cable, a fixture end, an adjusting bolt, an anti-sliding block, a pressing plug and a positioning plug, one end of the connecting cable is installed with the fixture end, and the surface of the fixture end is equidistantly ringed with adjusting bolts, and the end of the adjusting bolt close to the inner center of the fixture end is installed with an anti-sliding block, and the end of the connecting cable away from the fixture end is installed with a pressing plug, and positioning plugs are horizontally arranged on the upper and lower sides of the pressing plug.

[0008] Furthermore, the equipment box group includes an explosion-proof box, a partition plate, a storage bin, an instrument bin and a buffer pad. A partition plate is arranged inside the explosion-proof box, and a storage bin is arranged on one side of the partition plate, and an instrument bin is arranged on the side of the partition plate away from the storage bin, and the inner wall surface of the instrument bin is covered with a buffer pad.

[0009] Furthermore, the tester assembly is installed inside the instrument compartment, the fixture assembly is placed inside the storage compartment, and the partition plate and the buffer pad are made of the same material.

[0010] Furthermore, the box cover assembly includes a protective cover, a sealing ring and a protective pad. The protective cover is provided with a sealing ring on the edges around one side of the joint between the protective cover and the explosion-proof box body, and the middle surface of the protective cover is covered with a protective pad.

[0011] Furthermore, the tester assembly includes a DC resistance meter body, a docking socket and a positioning socket. The surface of the DC resistance meter body is provided with a docking socket, and positioning sockets are provided at four diagonal positions of the docking socket.

[0012] Furthermore, the tester assembly also includes a docking jack and an anti-foolproof block. The docking jack is installed in the center of the docking seat, and the anti-foolproof block is arranged on the upper end of the inner wall of the docking jack.

[0013] Furthermore, the adjusting bolt passes through the surface of the clamp end and is threadedly connected to each other, the anti-sliding block is arranged in an arc-shaped structure, the structure of the pressing plug matches the structure of the docking socket, and the surface structure of the positioning plug matches the internal surface structure of the positioning socket.

[0014] Furthermore, the outer surfaces of the clamp end, the adjusting bolt and the anti-sliding block are all made of insulating composite materials, and the adjusting bolt and the anti-sliding block are connected via a movable shaft structure.

[0015] The utility model provides a DC resistance tester with fast testing speed, which has the following beneficial effects:

[0016] 1. In the utility model, when the fixture assembly needs to be docked with the tester assembly, it is only necessary to slide and insert the matching plugs between the structures into the docking jacks with anti-fool blocks inside, and at the same time, the positioning plugs arranged on the sides of the plugs will be synchronously inserted into the positioning plugs provided on the surface of the docking seat, so as to complete the structural docking. By using the above structure, on the one hand, the stability of the structural docking can be effectively guaranteed, and the loosening of the structure can be prevented; on the other hand, the deviation during the docking process can be effectively prevented, and the damage caused by the misalignment of the docking structure can be prevented, which plays a guiding role. In addition, by arranging three sets of adjusting bolts and anti-sliding blocks on the end rings of the fixture, the terminal blocks of the docking can be adjusted as needed. The diameter size can be adjusted by rotation, so that the anti-sliding block of the arc structure connected to one end of the adjusting bolt is fitted to the surface of the terminal. By using the above structure, it can be flexibly adjusted to lock and fix according to different terminal blocks, effectively ensuring the flexibility and stability of the device structure, while also improving the use efficiency during testing, so as to facilitate fast and stable testing. The cylindrical structure of the clamp end prevents the metal wire from being exposed when the terminal blocks are connected, so as to avoid safety hazards during manual connection. The outer surfaces of the clamp end, the adjusting bolt and the anti-sliding block are covered with insulating composite materials, which can effectively ensure the safety during connection, so as to ensure the user's own safety.

[0017] 2. The utility model divides the explosion-proof box into a storage compartment and an instrument compartment by a partition plate, wherein the inner wall surface of the instrument compartment is covered with a fitting buffer pad, which can effectively provide structural protection for the tester assembly, and the storage compartment can be used to place multiple fixture assemblies during daily storage or transportation, so as to achieve the integrated convenience of the entire device, while ensuring the convenience of carrying and transportation, avoiding the increase in cost and time-consuming and labor-intensive separate packaging and transportation. In addition, by installing anti-collision corners at the four corners of the equipment box group and the box cover assembly, the entire equipment box group and the box cover assembly can be effectively given sufficient structural anti-collision properties to protect the tester assembly and fixture assembly installed inside. At the same time, the sealing ring arranged on the edge of the surface of one side of the protective cover can effectively provide the equipment box group and the box cover assembly with structural sealing after closing, to prevent the problem of moisture and liquid ingress, and the protective pad provides effective structural protection for the top surface of the DC resistance meter body after the box cover assembly is closed, to prevent structural damage due to external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main body structure of a DC resistance tester with a fast testing speed according to the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a fixture assembly of a DC resistance tester with a fast test speed according to the utility model;

[0020] Figure 3 This is a schematic diagram of the front view structure of a fixture end of a DC resistance tester with a fast test speed according to the utility model;

[0021] Figure 4 The utility model is a DC resistance tester with fast testing speed. Figure 1 A schematic diagram of the enlarged structure at point A;

[0022] Figure 5 The utility model is a DC resistance tester with fast testing speed. Figure 2 A schematic diagram of the enlarged structure at B;

[0023] Figure 6 The utility model is a three-dimensional structural schematic diagram of a docking seat, a positioning jack, a docking jack and an anti-foolproof block of a DC resistance tester with a fast testing speed.

[0024] In the figure: 1. Equipment box group; 101. Explosion-proof box; 102. Partition plate; 103. Storage compartment; 104. Instrument compartment; 105. Buffer pad; 2. Box cover assembly; 201. Protective cover; 202. Sealing ring; 203. Protective pad; 3. Damping hinge; 4. Anti-collision corner; 5. Tester assembly; 501. DC resistance meter body; 502. Docking seat; 503. Positioning socket; 504. Docking socket; 505. Anti-fool block; 6. Clamp assembly; 601. Connecting cable; 602. Clamp end; 603. Adjusting bolt; 604. Anti-sliding block; 605. Press plug; 606. Positioning plug. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0026] like Figures 1 to 6As shown, a DC resistance tester with a fast test speed includes an equipment box group 1 and a fixture assembly 6, a box cover assembly 2 is arranged on the top of the equipment box group 1, and a damping hinge 3 is connected between the box cover assembly 2 and the equipment box group 1, and the corners of the equipment box group 1 and the box cover assembly 2 are covered with anti-collision corners 4, and a tester assembly 5 is installed on one side of the inside of the equipment box group 1, and the fixture assembly 6 is placed on a side of the inside of the equipment box group 1 away from the tester assembly 5, and the fixture assembly 6 includes a connecting cable 601, a fixture end 602, an adjusting bolt 603, an anti-sliding block 604, a press plug 605 and a positioning plug 606, and one side of the connecting cable 601 A clamp end 602 is installed at the end, and adjusting bolts 603 are arranged at equal distances on the surface of the clamp end 602, and an anti-sliding block 604 is installed at the end of the adjusting bolt 603 close to the inner center of the clamp end 602, and a plug 605 is installed at the end of the connecting cable 601 away from the clamp end 602, and positioning plugs 606 are horizontally arranged on the upper and lower sides of the plug 605. The tester component 5 includes a DC resistance meter body 501, a docking seat 502 and a positioning jack 503. The surface of the DC resistance meter body 501 is provided with a docking seat 502, and positioning jacks 503 are opened at four diagonal positions of the docking seat 502. The tester component The docking socket 504 and the anti-slip block 505 are also included. The docking socket 504 is installed in the center of the docking seat 502, and the anti-slip block 505 is arranged on the upper end of the inner wall of the docking socket 504. The adjusting bolt 603 penetrates the surface of the clamp end 602 and is threadedly connected to each other. The anti-slip block 604 is arranged in an arc-shaped structure. The structure of the plug 605 matches the structure of the docking socket 504. The surface structure of the positioning plug 606 matches the internal surface structure of the positioning socket 503. The outer surfaces of the clamp end 602, the adjusting bolt 603 and the anti-slip block 604 are all made of insulating composite materials, and the adjusting bolt 603 and the anti-slip block 604 are made of insulating composite materials. The blocks 604 are connected by a movable shaft structure. It is only necessary to slide and insert the matching push plug 605 between the structures into the docking socket 504 with the anti-foolproof block 505 inside. At the same time, the positioning plug 606 set on the side of the push plug 605 will be synchronously inserted into the positioning socket 503 opened on the surface of the docking seat 502, thereby completing the structural docking. In addition, three groups of adjusting bolts 603 and anti-sliding block 604 are arranged around the clamp end 602, which can be rotated and adjusted according to the diameter size of the terminal to be docked, so that the anti-sliding block 604 of the arc structure connected to one end of the adjusting bolt 603 is fitted to the surface of the terminal.

[0027] like Figure 1As shown, the equipment box group 1 includes an explosion-proof box body 101, a partition plate 102, a storage compartment 103, an instrument compartment 104 and a buffer pad 105. The explosion-proof box body 101 is provided with a partition plate 102 inside, and the storage compartment 103 is provided on one side of the partition plate 102, and the instrument compartment 104 is provided on the side of the partition plate 102 away from the storage compartment 103, and the inner wall surface of the instrument compartment 104 is covered with a buffer pad 105, the tester component 5 is installed inside the instrument compartment 104, the fixture component 6 is placed inside the storage compartment 103, the partition plate 102 and the buffer pad 105 are made of the same material, and the box cover component 2 includes a protective The protective cover 201, the sealing ring 202 and the protective pad 203 are installed on the edges of the side where the protective cover 201 and the explosion-proof box 101 meet, and the middle surface of the protective cover 201 is covered with the protective pad 203. The explosion-proof box 101 is divided into a storage compartment 103 and an instrument compartment 104 by the partition plate 102, wherein the inner wall surface of the instrument compartment 104 is covered with a fitting buffer pad 105, which can effectively provide structural protection for the tester assembly 5, and the storage compartment 103 can be used to place multiple clamp assemblies 6 during daily storage or transportation to achieve the integrated convenience of the entire device.

[0028] In summary, if Figures 1 to 6 As shown, when using the DC resistance tester with a fast test speed, firstly, the box cover assembly 2 on the top of the equipment box group 1 is structurally opened by using the damping hinge 3, and then the clamp assembly 6 placed in the storage compartment 103 is taken out, and the clamp assembly 6 is structurally docked with the tester assembly 5 in the instrument compartment 104;

[0029] First, the push plug 605 at one end of the connecting cable 601 is connected to the docking socket 504 with the anti-fool block 505 on the inner wall. At the same time, the positioning plug 606 provided on the side of the push plug 605 is inserted into the positioning sockets 503 provided at the four diagonal positions of the docking seat 502 for sliding insertion, thereby completing a fast and stable structural docking;

[0030] Then, the terminal to be tested is inserted into the fixture end 602 at the other end of the connecting cable 601, and the adjusting bolt 603 is screwed in sequence, and the anti-sliding block 604 installed at one end thereof is pressed against the surface of the terminal, so as to limit the structure and fix it to ensure the stability of the test;

[0031] Then the DC resistance meter body 501 can be used to perform the corresponding DC resistance test. When the entire equipment is in the process of transportation, the inner wall surface of the instrument compartment 104 is covered with a fitting buffer pad 105, which can effectively provide structural protection for the tester assembly 5. In addition, by installing anti-collision corners 4 at the four corners of the equipment box group 1 and the box cover assembly 2, effective structural collision protection can be provided to protect the tester assembly 5 and the fixture assembly 6 installed inside. At the same time, the sealing ring 202 set on the edge of the surface on one side of the protective cover 201 can effectively provide structural sealing for the equipment box group 1 and the box cover assembly 2 after closing to prevent moisture and liquid ingress.

[0032] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A DC resistance tester with a high test speed, comprising an equipment box assembly (1) and a fixture assembly (6), characterized in that: The top of the equipment box group (1) is provided with a box cover assembly (2), and a damping hinge (3) is connected between the box cover assembly (2) and the equipment box group (1), and the corners of the equipment box group (1) and the box cover assembly (2) are covered with anti-collision corners (4), and a tester assembly (5) is installed on one side of the inside of the equipment box group (1), and the clamp assembly (6) is placed on a side of the inside of the equipment box group (1) away from the tester assembly (5), and the clamp assembly (6) includes a connecting cable (601), a clamp end (602), an adjusting bolt (603), an anti-collision corner (4), and a clamp end (604). A slider (604), a push plug (605) and a positioning plug (606), one end of the connecting cable (601) is installed with a clamp end (602), and the surface of the clamp end (602) is equidistantly ringed with adjusting bolts (603), and the end of the adjusting bolt (603) close to the inner center of the clamp end (602) is installed with an anti-sliding block (604), and the end of the connecting cable (601) away from the clamp end (602) is installed with a push plug (605), and positioning plugs (606) are horizontally arranged on the upper and lower sides of the push plug (605).

2. A DC resistance tester with fast testing speed according to claim 1, characterized in that: The equipment box group (1) comprises an explosion-proof box (101), a partition plate (102), a storage compartment (103), an instrument compartment (104) and a buffer pad (105); the explosion-proof box (101) is provided with a partition plate (102) inside, and the storage compartment (103) is provided on one side of the partition plate (102); the instrument compartment (104) is provided on the side of the partition plate (102) away from the storage compartment (103); and the inner wall surface of the instrument compartment (104) is covered with a buffer pad (105).

3. A DC resistance tester with fast testing speed according to claim 2, characterized in that: The tester assembly (5) is installed inside the instrument compartment (104), the fixture assembly (6) is placed inside the storage compartment (103), and the partition plate (102) and the buffer pad (105) are made of the same material.

4. A DC resistance tester with high test speed according to claim 1, characterized in that: The box cover assembly (2) comprises a protective cover (201), a sealing ring (202) and a protective pad (203); the sealing ring (202) is installed on the edges of one side of the joint between the protective cover (201) and the explosion-proof box body (101), and the middle surface of the protective cover (201) is covered with the protective pad (203).

5. A DC resistance tester with high test speed according to claim 1, characterized in that: The tester assembly (5) comprises a DC resistance meter body (501), a docking seat (502) and a positioning socket (503); the docking seat (502) is arranged on the surface of the DC resistance meter body (501), and the positioning sockets (503) are arranged at four diagonal positions of the docking seat (502).

6. A DC resistance tester with high test speed according to claim 5, characterized in that: The tester assembly (5) further comprises a docking jack (504) and an anti-foolproof block (505); the docking jack (504) is installed at the center of the docking seat (502), and the anti-foolproof block (505) is arranged at the upper end of the inner wall of the docking jack (504).

7. A DC resistance tester with high test speed according to claim 5, characterized in that: The adjusting bolt (603) penetrates the surface of the clamp end (602) and is threadedly connected to each other. The anti-sliding block (604) is arranged in an arc-shaped structure. The structure of the pressing plug (605) matches the structure of the docking socket (504). The surface structure of the positioning plug (606) matches the internal surface structure of the positioning socket (503).

8. A DC resistance tester with high test speed according to claim 1, characterized in that: The outer surfaces of the clamp end (602), the adjusting bolt (603) and the anti-sliding block (604) are all made of insulating composite material, and the adjusting bolt (603) and the anti-sliding block (604) are connected via a movable shaft structure.

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