Calibrating device for direct-current resistance tester

Abstract

The utility model discloses a DC resistance tester calibration device, which comprises a placing box, a placing plate is slidably connected in the placing box, a resistance tester body is arranged at the top of the placing plate, a handle is fixedly connected to one side of the placing box, a sliding groove is formed in one side of the placing box, and a cover plate is slidably connected in the sliding groove. Bolts are in threaded connection between the cover plate and the placement box, and a fixing assembly is arranged at the top of the placement plate and used for fixing the resistance tester body. According to the direct-current resistance tester calibration device disclosed by the utility model, the proper position of the resistance tester body in the placement box is ensured through the adjusting assembly, the instrument is fixed by arranging the fixing assembly, and the resistance tester body is placed in the placement box, so that the direct-current resistance tester calibration device is convenient to carry, and the placement stability and safety can be effectively improved; the instrument is protected from external impact and damage, the service life of the instrument is prolonged, and dust is prevented from entering the resistance tester body.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance testers, in particular to a calibration device for a DC resistance tester. Background Art

[0002] A DC resistance tester is an instrument used to measure the DC resistance value of electrical equipment, power systems or electronic components. It can help users detect the resistance value in a circuit to ensure the normal operation and safety of the circuit. DC resistance testers are usually used to measure the resistance values of cables, windings, grounding systems, etc.

[0003] Generally, in order to ensure the normal use of the tester, it is necessary to calibrate the tester. Generally, the calibration components of the tester are not easy to carry. During use, dust and impurities will enter the inside of the interface and accumulate inside for a long time, which will reduce the service life of the DC resistance test device of the transformer. In view of the above problems, we have introduced a calibration device for a DC resistance tester. Summary of the Utility Model

[0004] The utility model discloses a calibration device for a DC resistance tester, which studies and improves the existing structure and deficiencies, and provides a calibration device for a DC resistance tester to achieve a better practical value purpose.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A calibration device for a DC resistance tester, including a placement box, a placement plate is slidably connected inside the placement box, a resistance tester body is arranged on the top of the placement plate, a handle is fixedly connected to one side of the placement box, a chute is opened on one side of the placement box, a cover plate is slidably connected inside the chute, a bolt is threadedly connected between the cover plate and the placement box, a fixing component is arranged on the top of the placement plate, and the fixing component is used to fix the resistance tester body. Two threaded rods are rotatably connected to the bottom of the inner wall of the placement box, and the outer sides of the two threaded rods are threadedly connected to the inside of the placement plate. An adjusting component is arranged at the bottom of the inner wall of the placement box, and the adjusting component is used to drive the placement plate to move.

[0007] In a preferred scheme, the adjusting component includes a double-shaft motor, the double-shaft motor is arranged at the bottom of the inner wall of the placement box, fixing blocks are equidistantly and fixedly connected to the bottom of the inner wall of the placement box, a rotating rod is rotatably connected inside the fixing block, one end of the rotating rod is fixedly connected to one end of the output shaft of the double-shaft motor, and the other end of the rotating rod is fixedly connected to a first bevel gear.

[0008] In a preferred embodiment, a second bevel gear is provided on the outer side of the threaded rod, the first bevel gear meshes with the second bevel gear, and sliding rods are equidistantly arranged at the bottom of the inner wall of the placement box, and the outer sides of the sliding rods are slidably connected to the inside of the placement plate.

[0009] In a preferred embodiment, a cap is threadedly connected to the top of the threaded rod, a battery box is provided at the bottom of the inner wall of the placement box, and the battery box is electrically connected to the dual-axis motor.

[0010] In a preferred embodiment, the fixing assembly includes mounting blocks, the mounting blocks are fixedly connected to the top of the placement plate at equal intervals, one side of the mounting block is rotatably connected to a lead screw, one end of the lead screw is provided with a connecting block, and two moving blocks are rotatably connected to the outer side of the lead screw, and a connecting plate is fixedly connected to one side of the two moving blocks.

[0011] In a preferred embodiment, a rubber pad is provided between one side of the connecting plate and one side of the resistance tester body.

[0012] In a preferred embodiment, the fixing block is higher than the dual-axis motor.

[0013] The DC resistance tester calibration device provided by the present utility model has the following advantages:

[0014] First, through the adjustment assembly, it can ensure that the position of the resistance tester body in the placement box is appropriate, without shaking or displacement, improving the stability and safety of placement.

[0015] Second, by setting the fixing assembly to fix the resistance tester body, it can effectively protect the instrument from external impacts and damage, extending the service life of the instrument.

[0016] Third, by placing the resistance tester body in the placement box, it is convenient to carry and can prevent dust from entering the inside of the resistance tester body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a perspective schematic diagram of a DC resistance tester calibration device proposed by the present utility model.

[0018] Figure 2 FIG. is a front view schematic diagram of a DC resistance tester calibration device proposed by the present utility model.

[0019] Figure 3 FIG. is a top view schematic diagram of the internal structure of a DC resistance tester calibration device proposed by the present utility model.

[0020] Figure 4 FIG. is a bottom view schematic diagram of the internal structure of a DC resistance tester calibration device proposed by the present utility model.

[0021] Figure 5 Schematic diagram of the placement box and cover plate of a calibration device for a DC resistance tester proposed by the present utility model.

[0022] In the accompanying drawings: 1. Placement box; 2. Handle; 3. Slide groove; 4. Cover plate; 5. Bolt; 6. DC resistance tester body; 7. Battery box; 8. Placement plate; 9. Installation block; 10. Lead screw; 11. Moving block; 12. Connecting plate; 13. Connecting block; 14. Threaded rod; 15. Cap; 16. Slide bar; 17. Biaxial motor; 18. Fixed block; 19. Rotating rod; 20. First bevel gear; 21. Second bevel gear. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Usually, the components of the embodiments of the present application described and marked in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but only represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0024] A calibration device for a DC resistance tester disclosed by the present utility model is mainly applied to the scenario of calibrating a three-phase DC resistance tester.

[0025] Refer to Figure 1 and Figure 2 , a calibration device for a DC resistance tester, comprising: a placement box 1, a placement plate 8 is slidably connected inside the placement box 1, a DC resistance tester body 6 is arranged on the top of the placement plate 8, a handle 2 is fixedly connected to one side of the placement box 1, a slide groove 3 is opened on one side of the placement box 1, a cover plate 4 is slidably connected inside the slide groove 3, a bolt 5 is threadedly connected between the cover plate 4 and the placement box 1, a fixing component is arranged on the top of the placement plate 8, and the fixing component is used for fixing the DC resistance tester body 6. Two threaded rods 14 are rotatably connected to the bottom of the inner wall of the placement box 1, and the outer sides of the two threaded rods 14 are both threadedly connected to the inside of the placement plate 8. An adjusting component is arranged at the bottom of the inner wall of the placement box 1, and the adjusting component is used for driving the placement plate 8 to move.

[0026] In the above technical solution, considering the problem that the general tester calibration component is not easy to carry, to solve such problems, the specific operations are as follows: By setting an adjustment component, it is convenient to put the resistance tester body 6 into 1 for carrying. By setting a fixing component to fix the resistance tester body 6, it can prevent shaking and collision during carrying. Through the adjustment component, it can ensure that the resistance tester body 6 is properly positioned in the placement box without shaking or displacement, improving the stability and safety of placement. By setting a fixing component to fix the resistance tester body 6, it can effectively protect the instrument from external impacts and damage, extending the service life of the instrument. By putting the resistance tester body 6 into the placement box 1, it is convenient to carry and can prevent dust from entering the inside of the resistance tester body 6.

[0027] Refer to Figure 1 and Figure 4 In a preferred embodiment, the adjustment component includes a biaxial motor 17. The biaxial motor 17 is arranged at the bottom of the inner wall of the placement box 1. Fixed blocks 18 are equidistantly and fixedly connected to the bottom of the inner wall of the placement box 1. A rotating rod 19 is rotatably connected inside the fixed block 18. One end of the rotating rod 19 is fixedly connected to one end of the output shaft of the biaxial motor 17. The other end of the rotating rod 19 is fixedly connected to a first bevel gear 20. A second bevel gear 21 is arranged on the outer side of the threaded rod 14. The first bevel gear 20 meshes with the second bevel gear 21. Slide rods 16 are equidistantly arranged at the bottom of the inner wall of the placement box 1. The outer side of the slide rod 16 is slidably connected to the inside of the placement plate 8. The top of the threaded rod 14 is threadedly connected with a cap 15. A battery box 7 is arranged at the bottom of the inner wall of the placement box 1. The battery box 7 is electrically connected to the biaxial motor 17.

[0028] In the above technical solution, considering the problem that the resistance tester body 6 needs to be taken out of the placement box 1 during use, to solve such problems, the specific operations are as follows: By starting the biaxial motor 17 to drive the rotating rods 19 at both ends to rotate, thereby driving the first bevel gear 20 to rotate. Utilizing the meshing relationship between the first bevel gear 20 and the second bevel gear 21, then driving the second bevel gear 21 and the threaded rod 14 to rotate, and further driving the placement plate 8 to move upward. When the placement plate 8 moves to the highest position, the resistance tester body 6 can be placed on it. Then, control the biaxial motor 17 to rotate in the reverse direction, so that the placement plate 8 moves to the lowest position, and the resistance tester body 6 can be put into the placement box 1. When the battery box 7 needs to be charged, rotate the cap 15 to remove it, and then take out the placement plate 8 to charge the battery box 7. This simplifies the process of taking out and storing the resistance tester body 6, allowing the operator to use the resistance tester more easily and conveniently, saving operation time and effort.

[0029] Refer to Figure 1 and Figure 3, in a preferred embodiment, the fixing component includes a mounting block 9, the mounting blocks 9 are fixedly connected to the top of the placement plate 8 at equal intervals, one side of the mounting block 9 is rotatably connected to a lead screw 10, one end of the lead screw 10 is provided with a connecting block 13, and two moving blocks 11 are rotatably connected to the outer side of the lead screw 10. One side of the two moving blocks 11 is fixedly connected to a connecting plate 12, and a rubber pad is provided between one side of the connecting plate 12 and one side of the resistance tester body 6;

[0030] In the above technical solution, considering the problem that the resistance tester body 6 is likely to shake and collide inside the placement box 1 during carrying, to solve such problems, the specific operation is as follows: Place the resistance tester body 6 on the placement plate 8, and then rotate the connecting block 13 by hand to drive the lead screw 10 to rotate, thereby driving the moving blocks 11 and the connecting plate 12 to move, making them approach each other, and then clamping the resistance tester body 6 for fixation. In this way, during carrying, the resistance tester body 6 can be effectively protected from impact and collision, reducing the risk of damage to the instrument and extending the service life of the testing instrument.

[0031] Refer to Figure 1 and Figure 3 , in a preferred embodiment, the fixing block 18 is higher than the biaxial motor 17; setting the height of the fixing block 18 greater than that of the biaxial motor 17 can prevent the placement plate 8 from hitting the biaxial motor 17 when it descends to the lowest position, playing a protective role for the biaxial motor 17.

[0032] Working principle: When in use, when the resistance tester body 6 needs to be used, first remove the bolt 5 and the cover plate 4, start the biaxial motor 17 to drive the rotating rods 19 at both ends to rotate, thereby driving the first bevel gear 20 to rotate. Utilize the meshing relationship between the first bevel gear 20 and the second bevel gear 21, and then drive the second bevel gear 21 and the threaded rod 14 to rotate, thereby driving the placement plate 8 to move upward. When the placement plate 8 moves to the highest position, rotate the connecting block 13 in the reverse direction to drive the moving blocks 11 and the connecting plate 12 away from the resistance tester body 6, and the resistance tester body 6 can be taken out for use. When the resistance tester body 6 needs to be put away, first place the resistance tester body 6 in the middle of the placement plate 8, and then rotate the connecting block 13 by hand to drive the lead screw 10 to rotate, thereby driving the moving blocks 11 and the connecting plate 12 to move, making them approach each other, and then clamping the resistance tester body 6 for fixation. Then control the biaxial motor 17 to rotate in the reverse direction, so that the placement plate 8 moves to the lowest position, and the resistance tester body 6 can be put into the placement box 1. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0033] As described above, it is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. The substitution may be the substitution of part of the structure, device, method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present utility model and its inventive concept should be covered within the protection scope of the present utility model.

Claims

1. A DC resistance tester calibration device, comprising a placement box (1), characterized in that: The placement box (1) is internally slidably connected to a placement plate (8), a resistance tester body (6) is arranged on the top of the placement plate (8), a handle (2) is fixedly connected to one side of the placement box (1), a slide groove (3) is provided on one side of the placement box (1), a cover plate (4) is slidably connected to the inside of the slide groove (3), a bolt (5) is threadedly connected between the cover plate (4) and the placement box (1), a fixing component is arranged on the top of the placement plate (8), the fixing component is used to fix the resistance tester body (6), the bottom of the inner wall of the placement box (1) is rotatably connected to two threaded rods (14), the outer sides of the two threaded rods (14) are both threadedly connected to the inside of the placement plate (8), and the bottom of the inner wall of the placement box (1) is provided with an adjustment component, the adjustment component is used to drive the placement plate (8) to move.

2. A DC resistance tester calibration device according to claim 1, characterized in that: The adjustment assembly comprises a dual-axis motor (17), the dual-axis motor (17) being arranged at the bottom of the inner wall of the placement box (1), the bottom of the inner wall of the placement box (1) being equidistantly fixedly connected to a fixed block (18), the interior of the fixed block (18) being rotatably connected to a rotating rod (19), one end of the rotating rod (19) being fixedly connected to one end of an output shaft of the dual-axis motor (17), and the other end of the rotating rod (19) being fixedly connected to a first bevel gear (20).

3. A DC resistance tester calibration device according to claim 2, characterized in that: A second bevel gear (21) is arranged on the outer side of the threaded rod (14), the first bevel gear (20) is meshed with the second bevel gear (21), and sliding rods (16) are equidistantly arranged on the bottom of the inner wall of the placement box (1), and the outer side of the sliding rod (16) is slidably connected to the inside of the placement plate (8).

4. A DC resistance tester calibration device according to claim 1, characterized in that: A cap (15) is threadedly connected to the top of the threaded rod (14); a battery box (7) is provided at the bottom of the inner wall of the placement box (1); and the battery box (7) is electrically connected to the dual-axis motor (17).

5. A DC resistance tester calibration device according to claim 1, characterized in that: The fixing assembly comprises a mounting block (9), wherein the mounting block (9) is fixedly connected to the top of the placement plate (8) at equal distances, a screw rod (10) is rotatably connected to one side of the mounting block (9), a connecting block (13) is provided at one end of the screw rod (10), two moving blocks (11) are rotatably connected to the outer side of the screw rod (10), and a connecting plate (12) is fixedly connected to one side of the two moving blocks (11).

6. A DC resistance tester calibration device according to claim 5, characterized in that: A rubber pad is provided between one side of the connecting plate (12) and one side of the resistance tester body (6).

7. A DC resistance tester calibration device according to claim 2, characterized in that: The fixing block (18) is higher than the dual-axis motor (17).

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