Direct current resistance tester

Abstract

The utility model discloses a direct-current resistance tester, and relates to the technical field of resistance testers, in particular to a direct-current resistance tester which comprises a tester body, a heat dissipation bin is arranged in the tester body, a mounting bottom plate is buckled at the bottom of the heat dissipation bin, and a supporting frame is arranged on the upper surface of the mounting bottom plate. A transmission shaft rod is arranged at one end of an output shaft of the driving motor, a connecting plate is arranged on the outer surface of the transmission shaft rod, a rotating shaft rod is rotationally connected to the end, away from the transmission shaft rod, of the connecting plate, and a transmission gear is arranged at one end of the rotating shaft rod. According to the direct-current resistance tester, through cooperative arrangement of the supporting frame, the driving motor, the transmission shaft rod, the connecting plate, the rotating shaft rod, the transmission gear, the rotating blades, the output blades and the inner gear ring, the direct-current resistance tester has the effects of optimizing the heat dissipation structure and improving the heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of resistance tester technology, specifically a DC resistance tester. Background Technology

[0002] The DC resistance tester is a new generation of instrument for testing the DC resistance of transformers. It can automatically select the test current according to different models of power transformers and display the test results at the fastest speed. The DC resistance tester also has functions such as storage, printing, and discharge indication. It has a built-in non-volatile memory that can save measurement data for a long time.

[0003] The heat dissipation structure of existing DC resistance testers is relatively simple, which affects the heat dissipation effect. At the same time, most of the heat dissipation structures of existing DC resistance testers are fixed inside the tester, which makes subsequent cleaning and maintenance more troublesome. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a DC resistance tester that solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: A DC resistance tester includes a tester body. A heat dissipation chamber is provided inside the tester body. A mounting base plate is fastened to the bottom of the heat dissipation chamber. A support frame is provided on the upper surface of the mounting base plate. A fixing frame is provided in the middle of the support frame. A drive motor is provided in the middle of the fixing frame. A transmission shaft is provided at one end of the output shaft of the drive motor. A connecting plate is provided on the outer surface of the transmission shaft. A rotating shaft is rotatably connected to the end of the connecting plate away from the transmission shaft. A transmission gear is provided at one end of the rotating shaft. A transmission gear is provided at the upper end of the rotating shaft. It has rotating blades, an output blade at the upper end of the transmission shaft, an internal gear ring at the upper end of the support frame that meshes with the transmission gear, a fixed seat on the upper surface of the mounting base, a guide slide rod on the outer surface of the fixed seat, a connecting slide plate slidably connected to the outer surface of the guide slide rod, a limit plate on one side of the connecting slide plate, a first spring on the side of the connecting slide plate away from the limit plate, one end of the first spring being mounted on the fixed seat, a control shaft rotatably connected inside the mounting base, a control rope on the outer surface of the control shaft, and one end of the control rope being mounted on the outer surface of the connecting slide plate.

[0008] Optionally, the number of connecting plates, rotating shafts, and rotating blades is several, and they are evenly distributed on the outer surface of the transmission shaft.

[0009] Optionally, the inner bottom wall of the heat dissipation chamber is provided with a limiting block, the position of which is adapted to the position of the support frame.

[0010] Optionally, the mounting base plate has a connecting through hole inside, and a filter screen is installed inside the connecting through hole.

[0011] Optionally, the heat dissipation chamber is provided with a limiting slot inside, and the position of the limiting slot is adapted to the position of the limiting plate.

[0012] Optionally, the bottom of the mounting base plate is provided with an adjustment groove, an adjustment plate is placed inside the adjustment groove, a control shaft is set at the upper end of the adjustment plate, and a support pad is provided on the bottom surface of the mounting base plate.

[0013] This utility model provides a DC resistance tester, which has the following beneficial effects:

[0014] 1. This DC resistance tester, through the coordinated arrangement of the support frame, drive motor, transmission shaft, connecting plate, rotating shaft, transmission gear, rotating blade, output blade and internal gear ring, achieves an optimized heat dissipation structure and improves heat dissipation efficiency.

[0015] 2. This DC resistance tester, through the coordinated arrangement of the connecting slide plate, limit plate, first spring, control shaft and control rope, enables the DC resistance tester to have the effect of quick installation and disassembly of the heat dissipation structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of the heat dissipation chamber of this utility model;

[0017] Figure 2 This is a top view of the support frame of this utility model.

[0018] Figure 3 This is a top view of the mounting base plate of this utility model.

[0019] Figure 4 This is a bottom view of the structure of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the present invention.

[0021] In the diagram: 1. Tester body; 2. Heat dissipation chamber; 3. Mounting base plate; 4. Support frame; 5. Drive motor; 6. Transmission shaft; 7. Connecting plate; 8. Rotating shaft; 9. Transmission gear; 10. Rotating blade; 11. Output blade; 12. Internal gear ring; 13. Guide slide rod; 14. Connecting slide plate; 15. Limiting plate; 16. First spring; 17. Control shaft; 18. Control rope; 19. Limiting block; 20. Filter screen; 21. Limiting slot; 22. Adjusting plate; 23. Support pad. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example

[0024] Please see Figures 1 to 5 This utility model provides a technical solution: a DC resistance tester, including a tester body 1, a heat dissipation chamber 2 inside the tester body 1, a mounting base plate 3 fastened to the bottom of the heat dissipation chamber 2, a support frame 4 on the upper surface of the mounting base plate 3, a fixing frame in the middle of the support frame 4, a drive motor 5 in the middle of the fixing frame, a transmission shaft 6 at one end of the output shaft of the drive motor 5, a connecting plate 7 on the outer surface of the transmission shaft 6, a rotating shaft 8 rotatably connected to the end of the connecting plate 7 away from the transmission shaft 6, a transmission gear 9 at one end of the rotating shaft 8, a rotating blade 10 at the upper end of the rotating shaft 8, and a transmission gear 9 at the upper end of the transmission shaft 6. The upper end of the support frame 4 is provided with an internal gear ring 12, which meshes with the transmission gear 9. The upper surface of the mounting base plate 3 is provided with a fixed seat, and the outer surface of the fixed seat is provided with a guide slide rod 13. The outer surface of the guide slide rod 13 is slidably connected to a connecting slide plate 14. A limit plate 15 is provided on one side of the connecting slide plate 14, and a first spring 16 is provided on the side of the connecting slide plate 14 away from the limit plate 15. One end of the first spring 16 is provided on the fixed seat. The inside of the mounting base plate 3 is rotatably connected with a control shaft rod 17, and the outer surface of the control shaft rod 17 is provided with a control rope 18. One end of the control rope 18 is provided on the outer surface of the connecting slide plate 14.

[0025] Specifically, the rotation of the drive motor 5 drives the transmission shaft 6 and the connecting plate 7 to rotate, which in turn causes the transmission gear 9 on the rotating shaft 8 to roll along the internal gear ring 12, causing the rotating shaft 8 to rotate. This, in turn, causes the rotating blades 10 and the output blades 11 to rotate simultaneously, generating greater airflow. The external cold airflow is filtered through the filter screen 20 and blown to the working parts of the tester body 1 for efficient heat dissipation. When it is necessary to disassemble the heat dissipation structure, the control shaft 17 is rotated by rotating the adjustment plate 22. The control rope 18 is wound around the control shaft 17, pulling the connecting slide plate 14 and squeezing the first spring 16. This causes the limit plate 15 to quickly disengage from the limit slot 21, allowing the corresponding heat dissipation structure to be quickly removed from the heat dissipation chamber 2 for easy subsequent cleaning and maintenance.

[0026] Please see Figure 1-2 The number of connecting plates 7, rotating shafts 8 and rotating blades 10 is several, and they are evenly distributed on the outer surface of the transmission shaft 6.

[0027] Specifically, multiple sets of rotating blades 10 are set to accelerate airflow and improve heat dissipation.

[0028] Please see Figure 1 The bottom wall of the heat dissipation chamber 2 is provided with a limiting block 19, and the position of the limiting block 19 is adapted to the position of the support frame 4.

[0029] Specifically, the limiting block 19 effectively limits the positions of the support frame 4 and the mounting base 3.

[0030] Please see Figure 4 The mounting base plate 3 has a connecting through hole inside, and a filter screen 20 is installed inside the connecting through hole.

[0031] Specifically, the connection between the through-hole and the filter screen 20 allows for easy gas entry while effectively filtering dust.

[0032] Please refer to 1. The heat dissipation chamber 2 is provided with a limiting slot 21 inside, and the position of the limiting slot 21 is adapted to the position of the limiting plate 15.

[0033] Specifically, the limiting slot 21 facilitates the fixing of the mounting base plate 3.

[0034] Please see Figure 1 An adjustment groove is provided at the bottom of the mounting base plate 3, and an adjustment plate 22 is placed inside the adjustment groove. The control shaft 17 is set at the upper end of the adjustment plate 22, and a support pad 23 is provided on the bottom surface of the mounting base plate 3.

[0035] Specifically, the adjustment plate 22 is designed to facilitate the control of the rotation of the shaft 17.

[0036] During use, the rotation of the drive motor 5 drives the transmission shaft 6 and the connecting plate 7 to rotate, which in turn causes the transmission gear 9 on the rotating shaft 8 to roll along the internal gear ring 12, causing the rotating shaft 8 to rotate. This, in turn, causes the rotating blades 10 and the output blades 11 to rotate simultaneously, generating greater airflow. The external cold air is then filtered through the filter screen 20 and blown to the working parts of the tester body 1 for efficient heat dissipation. When it is necessary to disassemble the heat dissipation structure, the control shaft 17 is rotated by rotating the adjusting plate 22. The control rope 18 is wound around the control shaft 17, pulling the connecting slide plate 14 and squeezing the first spring 16. This causes the limit plate 15 to quickly disengage from the limit slot 21, allowing the corresponding heat dissipation structure to be quickly removed from the heat dissipation chamber 2. This facilitates subsequent cleaning and maintenance. After maintenance, rotate the adjusting plate 22 again to rotate the control shaft 17, wrap the control rope 18 around the control shaft 17, pull the connecting slide plate 14, and squeeze the first spring 16, so that the limit plate 15 retracts onto the mounting base plate 3. Then, insert the corresponding heat dissipation components into the heat dissipation chamber 2, so that the support frame 4 abuts against the limit block 19. Release the adjusting plate 22, and under the elastic force of the first spring 16, the limit plate 15 resets and locks into the limit slot 21, completing the quick installation of the heat dissipation components. This enables the DC resistance tester to have the effect of optimizing the heat dissipation structure and improving heat dissipation efficiency, and also enables the DC resistance tester to have the effect of convenient quick installation and disassembly of the heat dissipation structure.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A DC resistance tester, comprising a tester body, characterized in that: The tester body has a heat dissipation chamber inside, and a mounting base plate is fastened to the bottom of the heat dissipation chamber. A support frame is provided on the upper surface of the mounting base plate, and a fixed frame is provided in the middle of the support frame. A drive motor is provided in the middle of the fixed frame. A transmission shaft is provided at one end of the output shaft of the drive motor. A connecting plate is provided on the outer surface of the transmission shaft. A rotating shaft is rotatably connected to the end of the connecting plate away from the transmission shaft. A transmission gear is provided at one end of the rotating shaft. A rotating blade is provided at the upper end of the rotating shaft. An output blade is provided at the upper end of the transmission shaft. An internal gear ring is provided at the upper end of the support frame. The internal gear ring meshes with the transmission gear. A fixed seat is provided on the upper surface of the mounting base plate. A guide slide is provided on the outer surface of the fixed seat. A connecting slide is slidably connected to the outer surface of the guide slide. A limit plate is provided on one side of the connecting slide. A first spring is provided on the side of the connecting slide away from the limit plate. One end of the first spring is provided on the fixed seat. A control shaft is rotatably connected inside the mounting base plate. A control rope is provided on the outer surface of the control shaft. One end of the control rope is provided on the outer surface of the connecting slide.

2. The DC resistance tester according to claim 1, characterized in that: The number of connecting plates, rotating shafts, and rotating blades is several, and they are evenly distributed on the outer surface of the transmission shaft.

3. A DC resistance tester according to claim 1, characterized in that: The inner bottom wall of the heat dissipation chamber is provided with a limiting block, and the position of the limiting block is adapted to the position of the support frame.

4. A DC resistance tester according to claim 1, characterized in that: The mounting base plate has a connecting through hole inside, and a filter screen is installed inside the connecting through hole.

5. A DC resistance tester according to claim 1, characterized in that: The heat dissipation chamber is equipped with a limiting slot inside, and the position of the limiting slot is adapted to the position of the limiting plate.

6. A DC resistance tester according to claim 1, characterized in that: The bottom of the mounting base plate is provided with an adjustment groove, an adjustment plate is placed inside the adjustment groove, a control shaft is set at the upper end of the adjustment plate, and a support pad is provided on the bottom surface of the mounting base plate.

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