Resistance testing device

Abstract

The utility model provides a resistance testing device, and belongs to the technical field of resistance testing. The resistance testing device comprises a bottom plate, two electrode clamps are installed on the top of the bottom plate, the number of the limiting mechanisms is two, each limiting mechanism comprises a supporting block, an arc-shaped groove, a supporting plate, a limiting plate and a tooth groove, the supporting blocks are fixedly installed on the top of the bottom plate, the arc-shaped grooves are formed in the tops of the supporting blocks, and the tooth grooves are formed in the tops of the arc-shaped grooves. And the supporting plate is fixedly mounted at the top of the supporting block. By arranging the limiting mechanism, connecting the two sides of the cable with the two electrode clamps, starting a first motor, driving a first bidirectional screw rod to rotate, enabling two first sliding blocks to move in opposite directions, extruding a limiting groove through a transmission shaft, enabling a limiting plate to rotate, and matching a tooth groove with an arc-shaped groove, the two electrode clamps are driven to rotate, so that the cable can be fixed. And the limiting plate extrudes and limits the cable, so that the situation that the cable is separated from the electrode clamp in the tensioning process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance testing, in particular to a resistance testing device. Background Art

[0002] Resistance testing is a commonly used measurement method in electrical and electronic engineering. It is used to determine the resistance value of a resistor in a circuit or detect connection problems in a circuit. It is usually implemented by a base plate and two electrode clamps. When in use, the cable is clamped by the two electrode clamps to test the resistance value.

[0003] However, in order to ensure the accuracy of the test data, the cable used for testing needs to be straightened as much as possible. During this process, the cable is very easy to become detached. In addition, since the cable used for testing is often longer than the distance between the two electrode fixtures, the middle part of the cable is prone to twisting and tangling, which affects the accuracy of the test data. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a resistance testing device that overcomes the above technical problems or at least partially solves the above problems.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a resistance testing device, comprising a bottom plate, two electrode fixtures are installed on the top of the bottom plate,

[0007] The limiting mechanism is provided with two limiting mechanisms, and the limiting mechanism comprises:

[0008] A support block, wherein the support block is fixedly mounted on the top of the base plate;

[0009] An arc-shaped groove, wherein the arc-shaped groove is provided on the top of the support block;

[0010] A support plate, the support plate is fixedly mounted on the top of the support block;

[0011] A limiting plate, the limiting plate is rotatably mounted on the front side of the supporting plate;

[0012] A tooth groove, wherein the tooth groove is provided at the bottom of the limiting plate;

[0013] The lifting mechanism is arranged on the top of the bottom plate.

[0014] In a preferred embodiment, the lifting mechanism comprises:

[0015] A lifting plate, the lifting plate is arranged on the top of the bottom plate;

[0016] The arc-shaped tube is fixedly installed inside the jacking plate.

[0017] In a preferred solution, a first bidirectional screw is rotatably installed inside the base plate, two first sliding grooves are opened on the top of the base plate, first sliders are slidably installed inside the two first sliding grooves, the left and right sides of the first bidirectional screw are respectively sleeved inside the two first sliders, and transmission rods are fixedly installed on the opposite sides of the two first sliders.

[0018] In a preferred solution, the front sides of the two limit plates are each provided with a limit groove, a transmission shaft is slidably installed inside the limit groove, and the front side of the transmission shaft is fixedly connected to the rear side of the transmission rod.

[0019] In a preferred solution, a second bidirectional screw is rotatably installed inside the base plate, a second slide groove is opened on the top of the base plate, two second sliders are slidably installed inside the second slide groove, the left and right sides of the second bidirectional screw are respectively sleeved inside the two second sliders, and connecting rods are rotatably installed inside the two second sliders.

[0020] In a preferred solution, two fixing blocks are fixedly mounted on the bottom of the lifting plate, and the interiors of the two fixing blocks are rotatably connected to the other ends of the two connecting rods respectively.

[0021] In a preferred solution, a first motor is fixedly mounted on the right side of the base plate, and an output end of the first motor is fixedly connected to the right side of the first bidirectional screw rod.

[0022] In a preferred solution, a second motor is fixedly installed inside the base plate, and an output end of the second motor is fixedly connected to the right side of the second bidirectional screw rod.

[0023] The utility model provides a resistance testing device, the beneficial effects of which include:

[0024] 1. By setting a limit mechanism, the two sides of the cable are connected to the two electrode clamps, the first motor is started to drive the first bidirectional screw to rotate, so that the two first sliders move in opposite directions, and the limit plate is rotated by squeezing the limit groove by the transmission shaft. Through the cooperation of the tooth groove and the arc groove, the limit plate squeezes and limits the cable, thereby preventing the cable from being separated from the electrode clamp during the tensioning process.

[0025] 2. By setting up a lifting mechanism, starting the second motor, driving the second bidirectional screw to rotate, driving the two second sliders to move in opposite directions, so that the connecting rod supports the lifting plate, so that the lifting plate is lifted up, thereby lifting the twisted part in the middle of the cable into an arc, avoiding the twisting of excess cables in the middle and affecting the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure provided by the implementation method of the utility model;

[0028] Figure 2 A partial cross-sectional view provided for an embodiment of the utility model;

[0029] Figure 3 Provided for the implementation of the utility model;

[0030] Figure 4 Provided for implementation of the utility model.

[0031] In the figure: 1, bottom plate; 2, electrode fixture; 3, support block; 4, arc groove; 5, support plate; 6, limit plate; 7, tooth groove; 8, lift plate; 9, arc tube; 10, first bidirectional lead screw; 11, first slider; 12, transmission rod; 13, limit groove; 14, transmission shaft; 15, second bidirectional lead screw; 16, second slider; 17, connecting rod; 18, fixed block; 19, first motor; 20, second motor; 21, first slide groove; 22, second slide groove. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example

[0034] Reference Figure 1-4The utility model provides a technical solution: a resistance testing device, including a bottom plate 1, two electrode fixtures 2 are installed on the top of the bottom plate 1, and two limiting mechanisms are provided. The limiting mechanisms include a support block 3, an arc groove 4, a support plate 5, a limiting plate 6 and a tooth groove 7. The support block 3 is fixedly installed on the top of the bottom plate 1, the arc groove 4 is arranged on the top of the support block 3, the support plate 5 is fixedly installed on the top of the support block 3, the limiting plate 6 is rotatably installed on the front side of the support plate 5, the tooth groove 7 is arranged on the bottom of the limiting plate 6, and the lifting mechanism is arranged on the top of the bottom plate 1. A first bidirectional screw rod 10 is rotatably installed inside the bottom plate 1, two first slide grooves 21 are arranged on the top of the bottom plate 1, and first sliders 11 are slidably installed inside the two first slide grooves 21. The left and right sides of the first bidirectional screw rod 10 are respectively sleeved inside the two first sliders 11, and a transmission rod 12 is fixedly installed on the opposite side of the two first sliders 11. A limiting groove 13 is provided on the front side of each limiting plate 6, and a transmission shaft 14 is slidably installed inside the limiting groove 13. The front side of the transmission shaft 14 is fixedly connected to the rear side of the transmission rod 12, and a first motor 19 is fixedly installed on the right side of the bottom plate 1, and the output end of the first motor 19 is fixedly connected to the right side of the first bidirectional lead screw 10. By setting a limiting mechanism, the two sides of the cable are connected to the two electrode clamps 2, and the first motor 19 is started to drive the first bidirectional lead screw 10 to rotate. Through the threaded connection between the first slider 11 and the first bidirectional lead screw 10, and the opposite directions of the threads on both sides of the first bidirectional lead screw 10, the two first sliders 11 are moved in opposite directions, and the limiting plate 6 is rotated by squeezing the limiting groove 13 by the transmission shaft 14, and the limiting plate 6 is squeezed and limited by the cooperation of the tooth groove 7 and the arc groove 4, so as to avoid the cable from being separated from the electrode clamp 2 during the tensioning process;

[0035] Reference Figure 1-4The lifting mechanism includes a lifting plate 8 and an arc tube 9. The lifting plate 8 is arranged on the top of the bottom plate 1, and the arc tube 9 is fixedly installed inside the lifting plate 8. A second bidirectional screw rod 15 is rotatably installed inside the bottom plate 1. A second slide groove 22 is opened on the top of the bottom plate 1. Two second sliders 16 are slidably installed inside the second slide groove 22. The left and right sides of the second bidirectional screw rod 15 are respectively sleeved inside the two second sliders 16. Connecting rods 17 are rotatably installed inside the two second sliders 16. Two fixed blocks 18 are fixedly installed at the bottom of the lifting plate 8. The insides of the two fixed blocks 18 are respectively rotatably connected to the other ends of the two connecting rods 17. A second motor 20 is fixedly installed inside the bottom plate 1. The output end of the second motor 20 is connected to the second bidirectional screw rod 15. The right side is fixedly connected, and a lifting mechanism is set. When the two ends of the cable are connected to the electrode fixture 2, the cable is passed through the middle arc tube 9, and the second motor 20 is started to drive the second bidirectional screw 15 to rotate. Due to the threaded connection between the second slider 16 and the second bidirectional screw 15, and the opposite directions of the threads on both sides of the second bidirectional screw 15, the two second sliders 16 are driven to move in opposite directions. Since a fixed block 18 is fixedly installed at the bottom of the lifting plate 8, the two sides of the connecting rod 17 are rotatably connected to the second slider 16 and the fixed block 18 respectively, so that the connecting rod 17 supports the lifting plate 8, so that the lifting plate 8 is lifted, thereby the twisted part in the middle of the cable is lifted into an arc, avoiding the twisting of excess cables in the middle and affecting the accuracy of the test results.

[0036] Specifically, the working process or working principle of the resistance testing device is as follows: when in use, the cable is passed through the middle arc tube 9, and then the two sides of the cable are connected to the two electrode fixtures 2, and the first motor 19 is started to drive the first bidirectional screw 10 to rotate. Through the threaded connection between the first slider 11 and the first bidirectional screw 10, and the opposite directions of the threads on both sides of the first bidirectional screw 10, the two first sliders 11 are moved in opposite directions, and the limit plate 6 is rotated by squeezing the limit groove 13 through the transmission shaft 14, and the limit plate is rotated through the cooperation of the tooth groove 7 and the arc groove 4. 6 pairs of cables are squeezed and limited, and the second motor 20 is started to drive the second bidirectional screw rod 15 to rotate. Due to the threaded connection between the second slider 16 and the second bidirectional screw rod 15, and the opposite directions of the threads on both sides of the second bidirectional screw rod 15, the two second sliders 16 are driven to move in opposite directions. Since a fixed block 18 is fixedly installed on the bottom of the lifting plate 8, the two sides of the connecting rod 17 are rotatably connected to the second slider 16 and the fixed block 18 respectively, so that the connecting rod 17 supports the lifting plate 8, so that the lifting plate 8 is lifted up, thereby lifting the twisted part in the middle of the cable into an arc.

[0037] It should be noted that the electrode fixture 2, the first motor 19 and the second motor 20 are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art, so they are not described in detail.

Claims

1. A resistance testing device, comprising a base plate (1), two electrode fixtures (2) being mounted on the top of the base plate (1), characterized in that: The limiting mechanism is provided with two limiting mechanisms, and the limiting mechanism comprises: A support block (3), wherein the support block (3) is fixedly mounted on the top of the base plate (1); An arc-shaped groove (4), wherein the arc-shaped groove (4) is formed on the top of the supporting block (3); A support plate (5), wherein the support plate (5) is fixedly mounted on the top of the support block (3); A limiting plate (6), wherein the limiting plate (6) is rotatably mounted on the front side of the supporting plate (5); A tooth groove (7), wherein the tooth groove (7) is provided at the bottom of the limiting plate (6); A lifting mechanism is arranged on the top of the base plate (1).

2. A resistance testing device according to claim 1, characterized in that: The lifting mechanism comprises: A lifting plate (8), wherein the lifting plate (8) is arranged on the top of the bottom plate (1); An arc-shaped tube (9) is fixedly installed inside the lifting plate (8).

3. A resistance testing device according to claim 2, characterized in that: A first bidirectional screw rod (10) is rotatably mounted inside the base plate (1), two first sliding grooves (21) are provided on the top of the base plate (1), first sliders (11) are slidably mounted inside the two first sliding grooves (21), the left and right sides of the first bidirectional screw rod (10) are respectively sleeved inside the two first sliders (11), and a transmission rod (12) is fixedly mounted on the opposite side of the two first sliders (11).

4. A resistance testing device according to claim 3, characterized in that: The front sides of the two limit plates (6) are each provided with a limit slot (13), a transmission shaft (14) is slidably mounted inside the limit slot (13), and the front side of the transmission shaft (14) is fixedly connected to the rear side of the transmission rod (12).

5. A resistance testing device according to claim 4, characterized in that: A second bidirectional screw rod (15) is rotatably mounted inside the base plate (1), a second slide groove (22) is provided on the top of the base plate (1), two second sliders (16) are slidably mounted inside the second slide groove (22), the left and right sides of the second bidirectional screw rod (15) are respectively sleeved inside the two second sliders (16), and connecting rods (17) are rotatably mounted inside the two second sliders (16).

6. A resistance testing device according to claim 5, characterized in that: Two fixing blocks (18) are fixedly mounted on the bottom of the lifting plate (8), and the interiors of the two fixing blocks (18) are rotatably connected to the other ends of the two connecting rods (17) respectively.

7. A resistance testing device according to claim 6, characterized in that: A first motor (19) is fixedly mounted on the right side of the base plate (1), and an output end of the first motor (19) is fixedly connected to the right side of the first bidirectional screw rod (10).

8. A resistance testing device according to claim 7, characterized in that: A second motor (20) is fixedly installed inside the base plate (1), and an output end of the second motor (20) is fixedly connected to the right side of the second bidirectional screw rod (15).

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