Voltage resistance testing device for transformer framework

Abstract

The utility model relates to the technical field of transformer frameworks, and discloses a transformer framework withstand voltage testing device, which comprises a base, a fixed clamping groove, a fixed pin, a fixed guide sheet and a connecting wire are arranged on the base, a fixed clamp is movably connected to the base, and fixed seats are arranged at two ends of the fixed clamp; a positioning assembly; and a clamping assembly. According to the transformer framework fixing device, through the arranged positioning assembly and clamping assembly, the movable clamping plates can be moved to the two ends of a transformer framework along with the movable plates firstly, and after the movable plates are fixed through the inserting rods, the movable plates can be moved to proper positions according to different sizes of the transformer frameworks; and the elastic force of a third spring drives a movable clamping plate to clamp the transformer framework, the expansion amount of the third spring is kept consistent, and the situation that the clamping force of the transformer framework is different due to the fact that the expansion amount of the third spring is different, and the clamping and fixing effect is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of transformer frame technology, and in particular to a transformer frame withstand voltage testing device. Background Technology

[0002] The transformer bobbin is an important component of a transformer. It provides support and positioning for the transformer windings, ensuring that the windings can be neatly wound on it according to design requirements. Structurally, it is usually a frame with a certain shape, with common shapes including toroidal, EI, and EE shapes.

[0003] A search revealed a transformer frame withstand voltage testing device (CN219456379U), comprising a base, a fixing slot on the top of the base, a fixing clip installed inside the fixing slot, a fixing pin installed on the side of the base, a fixing guide plate at the bottom of the fixing slot, a circuit board connected to the bottom of the fixing guide plate, and a dust cover installed on the inner side of the fixing slot. The circuit board inside the base is connected to a withstand voltage testing instrument via wires. During testing, the fixing clip is pre-fixed to the transformer frame to be tested. Then, the transformer frame is fixed to the base for testing through the connection between the fixing clip and the fixing slot. After testing, the fixing clip is removed from the fixing slot by removing the fixing pin, and other fixing clips with transformer frames fixed to them are installed, thus allowing for the testing of other transformer frames to be tested. This achieves the technical effect of conveniently and quickly replacing the transformer frame to be tested during testing.

[0004] This technical solution clamps and fixes transformer frames of different sizes by varying the extension and contraction of springs. When the transformer frame is small, the spring extension and contraction are large, resulting in low clamping stress and affecting the stability of the clamping. This can easily lead to contact breakage due to shaking, affecting testing. Conversely, when the transformer frame is large, the spring extension and contraction are small, resulting in high clamping stress and potentially damaging the frame, thus affecting the clamping effect.

[0005] Therefore, we propose a transformer frame withstand voltage testing device. Utility Model Content

[0006] The present invention mainly solves the technical problem of inconsistent clamping stress affecting the clamping effect in the prior art, and provides a transformer frame withstand voltage testing device.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a transformer frame withstand voltage testing device, comprising:

[0008] The base is provided with a fixing slot, fixing pin, fixing guide plate and connecting wire, and a fixing clip is movably connected to the base, with fixing seats at both ends of the fixing clip;

[0009] The positioning component is mounted on the fixed clamp. The positioning component includes a fixed base, a movable plate and a first limiting slider. The positioning component is provided with a locking part for fixing the position of the movable plate. The locking part includes a pressing plate, a plug-in rod and a connecting rod.

[0010] A clamping assembly is disposed at the movable plate. The clamping assembly includes a movable clamping plate, and the movable clamping plate is provided with a conductive liner for electrical signal connection.

[0011] Furthermore, the top two ends of the fixing clamp are provided with first sliding grooves, and the inner walls of the first sliding grooves are provided with multiple locking holes arranged in a linear pattern. The bottom two ends of the movable plate are fixedly connected with first limiting sliders, which are slidably connected to the inner walls of the first sliding grooves. The movable plate and the fixed seat are fixedly connected with first springs on their opposite wall surfaces.

[0012] Furthermore, both ends of the inner wall of the movable plate are provided with adjustment grooves. The plug rod is slidably connected to the adjustment groove and the inner wall of the first limiting slider. The plug rod is adapted to the locking hole. A pressure block is fixedly connected to the top of the plug rod at the axial position. One end of the pressure block is inclined. A second spring is fixedly connected to the wall surface opposite to the pressure block and the adjustment groove. The second spring is sleeved on the outer wall of the plug rod.

[0013] Furthermore, an extrusion plate is provided on the side of the movable plate away from the fixed seat. The extrusion plate is located at the bottom of the movable clamping plate. A connecting rod is slidably connected to the inner wall of the adjusting groove. The connecting rod is fixedly connected to both ends of the extrusion plate. An extrusion block is fixedly connected to the other end of the connecting rod. The extrusion block is inclined and fits against the inclined surface of the pressure block.

[0014] Furthermore, a second sliding groove is provided at the middle position of the top of the movable plate, a second limiting slider is slidably connected to the inner wall of the second sliding groove, a third spring is fixedly connected to the wall surface opposite to the second limiting slider and the second sliding groove, and the movable clamping plate is fixedly connected to the top position of the second limiting slider.

[0015] Furthermore, the top and both ends of the outer wall of the movable clamp are provided with buffer plates, which are made of elastic material.

[0016] Furthermore, the inner wall of the movable clamping plate is provided with multiple linearly arranged buffer cavities near the buffer plate. The buffer cavities are connected to the buffer plate. A sliding block is slidably connected to the inner wall of the buffer cavity. A telescopic rod and a fourth spring are provided on the wall surface opposite to the sliding block and the buffer cavity. The fourth spring is sleeved on the outer wall of the telescopic rod.

[0017] Beneficial effects

[0018] This invention provides a transformer frame withstand voltage testing device. It has the following advantages:

[0019] (1) The transformer frame withstand voltage test device, through the positioning component and clamping component, can move the movable clamping plate to both ends of the transformer frame first, and fix the movable plate through the plug rod. Then, according to the different sizes of the transformer frame, the movable plate can be moved to a suitable position, and then the movable clamping plate is clamped at the transformer frame by the elastic force of the third spring. The extension and contraction of the third spring are kept consistent, so as to avoid the different clamping force on the transformer frame due to the different extension and contraction of the third spring, which would affect the clamping and fixing effect.

[0020] (2) The transformer frame withstand voltage test device has a buffer plate. The elastic design of the buffer plate can avoid excessive pressure on the transformer frame when it comes into contact with it, thus preventing damage. It can also deform the buffer plate and fit it on the frame by squeezing, thereby increasing the friction between the two and improving the stability of clamping and fixing.

[0021] (3) The transformer frame withstand voltage test device, through the telescopic rod and the fourth spring, can buffer the stress at the transformer frame by the extension and retraction of the fourth spring, and maintain the stability of the buffer by the absorption of the elastic potential energy of the fourth spring by the damping fluid in the telescopic rod, thereby improving the stability of the transformer frame and preventing it from shaking and breaking contact with the conductive lining, thus affecting the test. Attached Figure Description

[0022] Figure 1 This is the front view of the present utility model;

[0023] Figure 2 This is a detailed drawing of the fixing clip of this utility model;

[0024] Figure 3 This is a cross-sectional view of the positioning component of this utility model;

[0025] Figure 4 This is an exploded view of the positioning component of this utility model;

[0026] Figure 5 This is a partial sectional view of the movable clamping plate and movable plate of this utility model;

[0027] Figure 6 This is a cross-sectional view of the movable clamping plate in Embodiment 2 of this utility model;

[0028] Figure 7 This utility model Figure 6 Enlarged view of part A.

[0029] Legend: 1. Base; 2. Fixing slot; 3. Fixing clamp; 4. Fixing pin; 5. Fixing guide plate; 6. Connecting wire; 7. Fixing seat; 8. Movable clamping plate; 9. Conductive liner; 10. Movable plate; 11. First spring; 12. Extrusion plate; 13. First limiting slider; 14. Insert rod; 15. Connecting rod; 16. Extrusion block; 17. Pressure bearing block; 18. Second spring; 19. Second limiting slider; 20. Third spring; 21. Buffer plate; 22. Sliding block; 23. Telescopic rod; 24. Fourth spring. Detailed Implementation

[0030] Example 1: A transformer frame withstand voltage testing device, such as... Figure 1 and Figure 2 As shown, including

[0031] The base 1 is provided with a fixing slot 2, a fixing pin 4, a fixing guide 5, and a connecting wire 6. A fixing clip 3 is movably connected to the base 1. Fixing seats 7 are provided at both ends of the fixing clip 3. (The fixing slot 2 is located at the top of the base 1. The fixing clip 3 is slidably connected to the inner wall of the fixing slot 2. The fixing slot 2 is provided with an installation groove for connecting the fixing clip 3. The fixing guide 5 is located at the top of the fixing slot 2 and is electrically connected to the connecting wire 6. The fixing seat 7 is provided with a locking groove for fixing. The base 1 is provided with a through sliding groove. The fixing pin 4 is slidably connected to the inner wall of the sliding groove and is adapted to the locking groove.) The part in parentheses is the prior art. When it is necessary to fix the fixing clip 3, the fixing clip 3 is slid in the fixing slot 2 into the inner installation groove. At this time, the fixing pin 4 is slid in the sliding groove and inserted into the locking groove on the fixing seat 7 for fixing. This fixes the fixing clip 3.

[0032] The positioning component is mounted on the fixed clamp 3. The positioning component includes a fixed base 7, a movable plate 10 and a first limiting slider 13. The positioning component is provided with a locking part for fixing the position of the movable plate 10. The locking part includes a pressing plate 12, a plug-in rod 14 and a connecting rod 15.

[0033] The clamping assembly is located at the movable plate 10. The clamping assembly includes a movable clamping plate 8. The movable clamping plate 8 is provided with a conductive inner liner 9 for electrical signal connection. The conductive inner liner 9 is electrically connected to the fixed conductive plate 5.

[0034] like Figure 2 and Figure 3 As shown, the top two ends of the fixed clamp 3 are provided with first sliding grooves, and the inner walls of the first sliding grooves are provided with multiple locking holes arranged in a linear pattern. The bottom two ends of the movable plate 10 are fixedly connected with first limiting sliders 13, which are slidably connected to the inner wall of the first sliding groove. The movable plate 10 and the fixed seat 7 are fixedly connected with first springs 11 on their opposite wall surfaces.

[0035] When clamping and fixing are required, the transformer frame is placed between the two conductive inner linings 9. At this time, under the action of the first spring 11, the first limiting slider 13 on the movable plate 10 can slide in the first slide groove, thereby driving the two movable plates 10 to move closer to the transformer frame.

[0036] like Figure 3 and Figure 4 As shown, both ends of the inner wall of the movable plate 10 are provided with adjustment grooves. The bottom of the adjustment groove is provided with a through first sliding hole. The first sliding hole completely penetrates the first limiting slider 13 and extends to the bottom position of the first limiting slider 13. The plug rod 14 is slidably connected to the inner wall of the first sliding hole. The plug rod 14 is adapted to the locking hole. The top of the plug rod 14 is axially fixedly connected to a pressure block 17. One end of the pressure block 17 is inclined. A second spring 18 is fixedly connected to the wall surface opposite to the adjustment groove of the pressure block 17. The second spring 18 is sleeved on the outer wall of the plug rod 14.

[0037] A pressing plate 12 is provided on the side of the movable plate 10 away from the fixed base 7. The pressing plate 12 is located at the bottom of the movable clamping plate 8. A second sliding hole is provided through the inner wall of the adjusting groove. A connecting rod 15 is slidably connected to the inner wall of the second sliding hole. The connecting rod 15 is fixedly connected to both ends of the pressing plate 12. A pressing block 16 is fixedly connected to the other end of the connecting rod 15. The pressing block 16 is inclined and fits against the inclined surface of the pressure block 17.

[0038] When the movable plate 10 moves, it can drive the pressing plate 12 on it to move synchronously. The pressing plate 12 moves to the transformer frame and is pressed by it. When the pressing plate 12 is pressed, it can drive the connecting rod 15 and the pressing block 16 to move and press the pressure block 17. When the pressure block 17 is pressed, it can drive the plug rod 14 to slide in the first sliding hole and insert into the locking hole in the first sliding groove for fixation. This can fix the first limiting slider 13 and the movable plate 10 at the two sides of the transformer frame.

[0039] like Figure 5 As shown, a second slide groove is provided at the top center of the movable plate 10. A second limiting slider 19 is slidably connected to the inner wall of the second slide groove. A third spring 20 is fixedly connected to the wall opposite the second slide groove of the second limiting slider 19. The movable clamping plate 8 is fixedly connected to the top position of the second limiting slider 19.

[0040] When the movable plate 10 moves to the required position, the second limiting slider 19 can slide in the second slide groove under the elastic force of the third spring 20, which in turn drives the movable clamping plate 8 and the conductive inner liner 9 on it to approach the transformer frame and clamp and fix them.

[0041] In summary, by using the positioning and clamping components, the movable clamping plate 8 can be moved along with the movable plate 10 to both ends of the transformer frame. After the movable plate 10 is fixed by the plug rod 14, the movable plate 10 can be moved to a suitable position according to the size of the transformer frame. Then, the movable clamping plate 8 is clamped at the transformer frame by the elastic force of the third spring 20. The extension and retraction of the third spring 20 is kept consistent to avoid uneven clamping force on the transformer frame due to uneven extension and retraction of the third spring 20, which would affect the clamping and fixing effect.

[0042] Example 2: Based on Example 1, with reference to Figure 6 and Figure 7 The top and both ends of the outer wall of the movable clamping plate 8 are equipped with buffer plates 21, which are made of elastic material.

[0043] The buffer plate 21 is designed to prevent excessive pressure from damaging the transformer frame when it comes into contact with it. It can also deform and fit against the frame by squeezing, thereby increasing the friction between the two and improving the stability of the clamping and fixing.

[0044] Multiple linearly arranged buffer cavities are provided on the inner wall of the movable clamping plate 8 near the buffer plate 21. The buffer cavities are connected to the buffer plate 21. A sliding block 22 is slidably connected to the inner wall of the buffer cavity. A telescopic rod 23 and a fourth spring 24 are provided on the wall surface opposite to the sliding block 22 and the buffer cavity. The fourth spring 24 is sleeved on the outer wall of the telescopic rod 23. The inner walls of the fixed end and the extended end of the telescopic rod 23 are filled with damping fluid.

[0045] When the transformer frame shakes, the stress generated by the shaking can squeeze the buffer plate 21, causing it to deform and enter the buffer cavity to squeeze the sliding block 22. This, in turn, causes the telescopic rod 23 and the fourth spring 24 to extend and retract to buffer the stress. The damping fluid in the telescopic rod 23 absorbs the elastic potential energy of the fourth spring 24 when it contracts, thus maintaining the stability of the buffer.

[0046] The telescopic rod 23 and the fourth spring 24 can buffer the stress at the transformer frame by extending and retracting the fourth spring 24, and the damping fluid inside the telescopic rod 23 absorbs the elastic potential energy of the fourth spring 24 to maintain the stability of the buffer, improve the stability of the transformer frame, and prevent it from shaking and breaking contact with the conductive liner 9, which would affect its testing.

[0047] The working principle of this utility model is as follows: When clamping and fixing are required, the transformer frame is placed between the two conductive inner linings 9. At this time, under the elastic force of the first spring 11, the first limiting slider 13 on the movable plate 10 can slide in the first slide groove, thereby driving the two movable plates 10 to move closer to the transformer frame. When the movable plates 10 move, the pressing plates 12 on them can move synchronously. The pressing plates 12 move to the transformer frame and are pressed by it. The pressing plates 12, when pressed, can drive the connecting rod 15 and the pressing block 16 to move and press the pressure block 17. The pressure block 17 is subjected to... Squeezing will cause the plug rod 14 to slide in the first sliding hole and be inserted into the locking hole in the first sliding groove for fixation. This will fix the first limiting slider 13 and the movable plate 10 to the two sides of the transformer frame. When the movable plate 10 moves to the required position, the second limiting slider 19 will slide in the second sliding groove under the action of the third spring 20. This will then cause the movable clamping plate 8 and the conductive inner liner 9 on it to move close to the transformer frame and clamp and fix it. The conductive inner liner 9 will be connected to the transformer frame for electrical signal transmission, and the electrical signal transmission test will be conducted through the fixed guide plate 5 and the connecting wire 6.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A transformer frame withstand voltage testing device, characterized in that: include: The base (1) is provided with a fixing slot (2), a fixing pin (4), a fixing guide plate (5) and a connecting wire (6), and a fixing clip (3) is movably connected to the base (1), with fixing seats (7) at both ends of the fixing clip (3); The positioning component is set on the fixed clamp (3). The positioning component includes a fixed seat (7), a movable plate (10) and a first limiting slider (13). The positioning component is provided with a locking part for fixing the position of the movable plate (10). The locking part includes a pressing plate (12), a plug rod (14) and a connecting rod (15). The clamping assembly is located at the movable plate (10) and includes a movable clamping plate (8). The movable clamping plate (8) is provided with a conductive inner liner (9) for electrical signal connection.

2. The transformer frame withstand voltage testing device according to claim 1, characterized in that: The top two ends of the fixed clamp (3) are provided with first sliding grooves, and the inner walls of the first sliding grooves are provided with multiple locking holes arranged in a linear pattern. The bottom two ends of the movable plate (10) are fixedly connected with first limiting sliders (13), which are slidably connected to the inner wall of the first sliding groove. The movable plate (10) and the fixed seat (7) are fixedly connected with first springs (11).

3. The transformer frame withstand voltage testing device according to claim 2, characterized in that: The inner walls of the movable plate (10) are provided with adjustment grooves at both ends. The plug rod (14) is slidably connected to the inner wall of the adjustment groove and the first limiting slider (13). The plug rod (14) is adapted to the locking hole. A pressure block (17) is fixedly connected to the top of the plug rod (14) at an axial position. One end of the pressure block (17) is inclined. A second spring (18) is fixedly connected to the wall surface opposite to the adjustment groove of the pressure block (17). The second spring (18) is sleeved on the outer wall of the plug rod (14).

4. The transformer frame withstand voltage testing device according to claim 3, characterized in that: A pressing plate (12) is provided on the side of the movable plate (10) away from the fixed seat (7). The pressing plate (12) is located at the bottom of the movable clamping plate (8). A connecting rod (15) is slidably connected to the inner wall of the adjusting groove. The connecting rod (15) is fixedly connected to both ends of the pressing plate (12). A pressing block (16) is fixedly connected to the other end of the connecting rod (15). The pressing block (16) is inclined and fits against the inclined surface of the pressure block (17).

5. The transformer frame withstand voltage testing device according to claim 1, characterized in that: The movable plate (10) has a second sliding groove at the top center. A second limiting slider (19) is slidably connected to the inner wall of the second sliding groove. A third spring (20) is fixedly connected to the second limiting slider (19) and the wall opposite to the second sliding groove. The movable clamp (8) is fixedly connected to the top position of the second limiting slider (19).

6. The transformer frame withstand voltage testing device according to claim 1, characterized in that: The movable clamp (8) is provided with a buffer plate (21) at the top and both ends of the outer wall. The buffer plate (21) is made of elastic material.

7. The transformer frame withstand voltage testing device according to claim 6, characterized in that: The inner wall of the movable clamp (8) near the buffer plate (21) has multiple buffer cavities arranged in a linear pattern. The buffer cavities are connected to the buffer plate (21). A sliding block (22) is slidably connected to the inner wall of the buffer cavity. A telescopic rod (23) and a fourth spring (24) are provided on the wall surface opposite to the sliding block (22) and the buffer cavity. The fourth spring (24) is sleeved on the outer wall of the telescopic rod (23).

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