Transformer detection jig
By designing a transformer testing fixture that includes a base, cover plate, platform assembly, clamping assembly, and testing assembly, the problems of traditional fixtures being unable to perform batch clamping and unstable connections are solved, enabling fast and reliable transformer testing.
Patent Information
- Application Number
- CN202422556858.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-10-23
AI Technical Summary
Traditional transformer testing fixtures cannot accommodate small transformers in batches, and it is difficult to ensure a stable connection between the probe and the pin, resulting in large errors in the testing results.
A transformer testing fixture was designed, comprising a base, a cover plate, a stage assembly, a clamping assembly, and a testing assembly. The cover plate and mounting base are made of transparent material. The spring structure of the clamping assembly is used to stably clamp the probe pins, and the testing process is controlled by the circuit board of the testing assembly to ensure connection stability.
This technology enables rapid batch clamping of transformers, improving testing efficiency and reliability, ensuring stable connection between probes and pins, and reducing testing errors.
Smart Images
Figure CN223538941U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transformer testing equipment, and in particular to a transformer testing fixture. Background Technology
[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. Its main components are a primary coil, a secondary coil, and an iron core (magnetic core). Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer). For small transformers, there are soldered leads on one side. After the transformer is manufactured, the leads need to be tested for high voltage withstand capability. During testing, the transformer needs to be fixed in a fixture on a testing platform, and all leads must be connected to the testing probes. However, traditional fixtures cannot handle batches of transformers, resulting in low efficiency. Furthermore, it is difficult to ensure proper connection between the probes and leads, leading to significant errors in the test results. Therefore, it is necessary to develop a transformer testing fixture to address these issues. Utility Model Content
[0003] The purpose of this invention is to provide a transformer testing fixture to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A transformer testing fixture includes a base, a cover plate, a platform assembly, a clamping assembly, and a testing assembly. The cover plate is fixed above the base, and the base has a wiring cavity. The cover plate has multiple sets of first mounting through holes. The platform assembly includes a mounting base plate, an insulating carrier plate, and a probe assembly. The mounting base plate and the insulating carrier plate are sequentially fixed above the cover plate. The mounting base plate has a second mounting through hole corresponding to the first mounting through hole, and the insulating carrier plate has a third mounting through hole corresponding to the second mounting through hole. The upper end of the insulating carrier plate has a placement groove communicating with the third mounting through hole. The probe assembly includes a connecting pipe and a detachable sleeve, both made of metal. The system includes a spring, a movable pressure rod, and a probe. The lower end of the connecting tube is fixed inside the first mounting through hole and passes through the wiring cavity. The upper end of the connecting tube corresponds to the second mounting through hole. The upper and lower sides of the connecting tube are respectively provided with an upper mounting blind hole and a lower mounting blind hole. The lower end of the detachable sleeve is inserted into the upper mounting blind hole, and the upper end corresponds to the third mounting through hole. The spring is placed inside the lower side of the detachable sleeve. The movable pressure rod is slidably connected to the detachable sleeve, and its lower end contacts the spring. The probe is fixed at the upper end of the movable pressure rod and corresponds to the placement groove. The clamping assembly is fixed above the base, and its lower pressing end corresponds to the upper part of the stage assembly. The detection assembly is connected to the lower mounting blind hole through a wire.
[0006] Further description of this utility model: Both the cover plate and the mounting base plate are made of transparent material.
[0007] Further description of the present invention: The clamping assembly includes a mounting plate, a self-locking manual pressure rod, a transparent pressure plate, a vertical guide post, and a guide sleeve. The lower end of the mounting plate is fixed on the base, the self-locking manual pressure rod is fixed on the upper end of the mounting plate, the transparent pressure plate is fixed on the power output end of the self-locking manual pressure rod and corresponds to the upper part of the insulating carrier plate, the vertical guide post is fixed on the mounting plate, and the guide sleeve is fixed on the transparent pressure plate and slidably connected to the vertical guide post.
[0008] Further description of the present invention: The detection component includes a control box and a power switch, a sorting indicator light and a final inspection indicator light, all mounted on the control box. The power switch, the sorting indicator light and the final inspection indicator light are all electrically connected to the circuit board inside the control box. Multiple sets of sorting indicator lights are provided.
[0009] The beneficial effects of this invention are as follows: A small transformer is placed with its pins facing downwards on the placement slot of an insulating carrier plate, with the pins in contact with the probe. After placing multiple sets of transformers, the driving clamping assembly descends, pressing each set of transformers firmly onto the insulating carrier plate. The pins press the probe down, and under the drive of the movable pressure rod, the spring is compressed. Under the elastic action of the spring, the probe has upward pressure to press the pins, thus ensuring a stable connection between each pin and the probe. The detection assembly checks the connection between each pin and the probe. Only after confirming a normal connection can the high-voltage withstand testing equipment, electrically connected to the blind mounting hole, be activated to test each set of transformers. The advantages of this design are: it enables rapid and batch clamping of transformers and ensures a stable connection between the transformer and the probe, improving testing efficiency and reliability. Attached Figure Description
[0010] Figure 1 This is an overall structural diagram of the present invention;
[0011] Figure 2 This is a cross-sectional view of the base, cover plate and platform assembly in this utility model;
[0012] Figure 3 yes Figure 2 A magnified view of a portion of position A in the middle;
[0013] Figure 4 This is a structural diagram of the probe assembly in this utility model;
[0014] Explanation of reference numerals in the attached figures:
[0015] 1. Base; 11. Wiring cavity; 2. Cover plate; 21. First mounting through hole; 3. Platform assembly; 31. Mounting base plate; 311. Second mounting through hole; 32. Insulating carrier plate; 321. Third mounting through hole; 322. Placement slot; 33. Probe assembly; 331. Connecting tube; 332. Removable sleeve; 333. Spring; 334. Movable pressure rod; 335. Probe; 4. Clamping assembly; 41. Mounting upright plate; 42. Self-locking manual pressure rod; 43. Transparent pressure plate; 44. Vertical guide post; 45. Guide sleeve; 5. Detection assembly; 51. Control box; 52. Power switch; 53. Sorting indicator light; 54. Final inspection indicator light. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings:
[0017] like Figures 1 to 4 As shown, a transformer testing fixture includes a base 1, a cover plate 2, a platform assembly 3, a clamping assembly 4, and a testing assembly 5. The cover plate 2 is fixed above the base 1. The base 1 has a wiring cavity 11. The cover plate 2 has multiple sets of first mounting through holes 21. The platform assembly 3 includes a mounting base plate 31, an insulating carrier plate 32, and a probe assembly 33. The mounting base plate 31 and the insulating carrier plate 32 are sequentially fixed above the cover plate 2. The mounting base plate 31 has a second mounting through hole 311 corresponding to the first mounting through hole 21. The insulating carrier plate 32 has a third mounting through hole 321 corresponding to the second mounting through hole 311. The upper end of the insulating carrier plate 32 has a placement groove 322 communicating with the third mounting through hole 321. The probe assembly 33 includes a connecting tube 331 and a detachable sleeve 332, both made of metal. The components include a spring 333, a movable pressure rod 334, and a probe 335. The lower end of a connecting tube 331 is fixed inside the first mounting through hole 21 and passes through the wiring cavity 11. The upper end of the connecting tube 331 corresponds to the second mounting through hole 311. The upper and lower sides of the connecting tube 331 are respectively provided with an upper mounting blind hole and a lower mounting blind hole. The lower end of a detachable sleeve 332 is inserted into the upper mounting blind hole, and the upper end corresponds to the third mounting through hole 321. The spring 333 is placed inside the lower side of the detachable sleeve 332. The movable pressure rod 334 is slidably connected to the detachable sleeve 332 and its lower end contacts the spring 333. The probe 335 is fixed at the upper end of the movable pressure rod 334 and corresponds to the placement groove 322. The clamping assembly 4 is fixed above the base 1 and its lower pressing end corresponds to the upper part of the platform assembly 3. The detection assembly 5 is connected to the lower mounting blind hole through a wire.
[0018] The small transformer is placed with its pins facing down on the placement slot 322 of the insulating carrier plate 32, with the pins in contact with the probe 335. After placing multiple sets of transformers, the driving clamping assembly 4 descends, pressing each set of transformers onto the insulating carrier plate 32. The pins press down on the probe 335. Driven by the movable pressure rod 334, the spring 333 is compressed. Under the elastic action of the spring 333, the probe 335 has upward pressure to press the pins, thus ensuring a stable connection between each pin and the probe 335. The detection assembly 5 detects the connection between each pin and the probe 335. Only after the connection between the pins and the probe 335 is detected to be normal can the high-voltage withstand test equipment, which is also electrically connected to the lower blind hole, be started to test each set of transformers. The advantage of this design is that it can quickly and in batches clamp transformers and ensure a stable connection between the transformer and the probe 335, improving the efficiency and reliability of the test.
[0019] After lifting the insulating carrier plate 32 upwards, the removable sleeve 332 can be directly pulled out from the connecting pipe 331, so as to inspect and replace the removable sleeve 332 and its internal parts.
[0020] Both the cover plate 2 and the mounting base plate 31 are made of transparent material, allowing for direct observation of the position and connection of the probe assembly 33 during the testing process, so that any abnormalities can be eliminated in a timely manner.
[0021] The clamping assembly 4 includes a mounting plate 41, a self-locking manual pressure rod 42, a transparent pressure plate 43, a vertical guide post 44, and a guide sleeve 45. The lower end of the mounting plate 41 is fixed to the base 1, the self-locking manual pressure rod 42 is fixed to the upper end of the mounting plate 41, the transparent pressure plate 43 is fixed to the power output end of the self-locking manual pressure rod 42 and corresponds to the upper part of the insulating carrier plate 32, the vertical guide post 44 is fixed to the mounting plate 41, and the guide sleeve 45 is fixed to the transparent pressure plate 43 and is slidably connected to the vertical guide post 44.
[0022] When clamping multiple transformers, operate the self-locking manual pressure lever 42 to drive the transparent pressure plate 43 downward. With the cooperation of the guide sleeve 45 and the vertical guide post 44, the downward pressing action of the transparent pressure plate 43 is smoother. After the transparent pressure plate 43 presses the transformer into place, the self-locking manual pressure lever 42 self-locks to prevent the transparent pressure plate 43 from popping up. The transparent pressure plate 43 is made of transparent material, which allows for a direct observation of the transformer's position and connection status, so that any abnormalities can be eliminated in time.
[0023] The detection component 5 includes a control box 51 and a power switch 52, a sorting indicator light 53, and a final inspection indicator light 54, all of which are installed on the control box 51. The power switch 52, the sorting indicator light 53, and the final inspection indicator light 54 are all electrically connected to the circuit board inside the control box 51. Multiple sets of sorting indicator lights 53 are provided.
[0024] Power switch 52 controls whether the detection component 5 is powered on or off. The sub-inspection indicator 53 displays the connection status of each group of transformers. If the connection is normal, the indicator light will be on; if there is an abnormality, the indicator light will not be on. When all sub-inspection indicator lights 53 are on normally, the main inspection indicator light 54 will be on, and the high voltage withstand test equipment can be started normally. If the main inspection indicator light 54 is not on, the corresponding transformer and probe component 33 should be checked by checking the lighting status of the sub-inspection indicator lights 53. Only after the abnormality is eliminated can the high voltage withstand test equipment be started.
[0025] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.
Claims
1. A transformer testing fixture, characterized in that: The assembly includes a base, a cover plate, a stage assembly, a clamping assembly, and a detection assembly. The cover plate is fixed above the base, and the base has a wiring cavity. The cover plate has multiple sets of first mounting through holes. The stage assembly includes a mounting base plate, an insulating carrier plate, and a probe assembly. The mounting base plate and the insulating carrier plate are sequentially fixed above the cover plate. The mounting base plate has a second mounting through hole corresponding to the first mounting through hole, and the insulating carrier plate has a third mounting through hole corresponding to the second mounting through hole. The upper end of the insulating carrier plate has a placement groove communicating with the third mounting through hole. The probe assembly includes a connecting tube, a detachable sleeve, a spring, a movable pressure rod, and a probe, all made of metal. The lower end of the connecting tube is fixed in the first mounting through hole and passes through the wiring cavity. The upper end of the connecting tube corresponds to the second mounting through hole. The upper and lower sides of the connecting tube are respectively provided with an upper mounting blind hole and a lower mounting blind hole. The lower end of the detachable sleeve is inserted in the upper mounting blind hole, and the upper end corresponds to the third mounting through hole. The spring is placed inside the lower side of the detachable sleeve. The movable pressure rod is slidably connected to the detachable sleeve and its lower end contacts the spring. The probe is fixed at the upper end of the movable pressure rod and corresponds to the placement groove. The clamping assembly is fixed above the base and its lower pressing end corresponds to the upper part of the platform assembly. The detection assembly is connected to the lower mounting blind hole through a wire.
2. The transformer testing fixture according to claim 1, characterized in that: Both the cover plate and the mounting base plate are made of transparent material.
3. The transformer testing fixture according to claim 1, characterized in that: The clamping assembly includes a mounting plate, a self-locking manual pressure rod, a transparent pressure plate, a vertical guide post, and a guide sleeve. The lower end of the mounting plate is fixed to the base, the self-locking manual pressure rod is fixed to the upper end of the mounting plate, the transparent pressure plate is fixed to the power output end of the self-locking manual pressure rod and corresponds to the area above the insulating carrier plate, the vertical guide post is fixed to the mounting plate, and the guide sleeve is fixed to the transparent pressure plate and slidably connected to the vertical guide post.
4. A transformer testing fixture according to claim 1, characterized in that: The detection component includes a control box and a power switch, a sorting indicator light, and a final inspection indicator light, all mounted on the control box. The power switch, the sorting indicator light, and the final inspection indicator light are all electrically connected to the circuit board inside the control box. Multiple sets of sorting indicator lights are provided.