High-power high-voltage thyristor test clamp

Abstract

The utility model discloses a high-power high-voltage thyristor test clamp, which comprises a base, the top of the base is provided with a stress seat, the top of the stress seat is provided with a clamping seat in a penetrating manner, the clamping seat is internally provided with a plurality of clamping feet in a sliding manner, the end parts of the clamping feet are hinged with the same supporting seat, the bottom of the supporting seat is provided with a pushing mechanism, and the pushing mechanism is arranged on the supporting seat. A limiting plate is arranged at the top of each clamping pin and used for uniformly clamping a high-voltage thyristor, a conducting strip is embedded in the middle of the top of the clamping seat, a conducting socket connected with the conducting strip is arranged on the outer side of the stress seat, a hinge shaft is arranged at one end of each clamping pin, and the multiple clamping pins and the hinge shafts are of an umbrella-shaped structure. The pushing mechanism comprises an electric push rod, and a buffer spring connected with the supporting seat is arranged at the telescopic end of the electric push rod. The high-voltage thyristor test clamp can uniformly clamp a high-voltage thyristor, is high in flexibility and safety, and facilitates the detection and use of the high-voltage thyristor.

Description

Technical Field

[0001] This utility model relates to a clamp, and more particularly to a high-power high-voltage thyristor test clamp. Background Technology

[0002] High-power high-voltage thyristors, also known as silicon controlled rectifiers (SCRs), are a special type of thyristor capable of withstanding high voltage and high current, possessing powerful power handling capabilities. Their working principle is based on the controllable conduction characteristics of thyristors. During the production of high-power high-voltage thyristors, comprehensive testing of their electrical performance is required. Test fixtures are used during high-voltage thyristor testing to limit and clamp the high-power high-voltage thyristors.

[0003] Currently, high-power high-voltage thyristors are used with heat sinks connected to both their positive and negative terminals, and are subjected to pressure at both ends. Therefore, when testing the resistance of the control electrode and cathode of a high-voltage thyristor, it is either manually pressed while padding the outside of the thyristor with insulating material, or its resistance is measured by reversing the positive and negative terminals of a multimeter. This test determines the type and qualification status of the thyristor. However, the high-voltage thyristor cannot be placed in the exact center of the clamp. During the test, the high-voltage thyristor will be subjected to uneven force, which can easily damage some of the clamping plates in the clamp and threaten the safety of the test personnel. For the above reasons, it is necessary to design a high-voltage thyristor test fixture with a uniform clamping structure that can be used flexibly and safely. Utility Model Content

[0004] In view of the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a high-power high-voltage thyristor test fixture, which realizes that the test fixture can uniformly clamp the high-voltage thyristor, with strong clamping flexibility and high safety.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A high-power high-voltage thyristor test fixture includes a base, a force-bearing seat on the top of the base, a clamping seat through the top of the force-bearing seat, a plurality of clamping feet slidably disposed in the clamping seat, the ends of the plurality of clamping feet being hinged to the same support seat, a pushing mechanism being disposed at the bottom of the support seat, and a limit plate being disposed at the top of the clamping feet for uniform clamping of the high-voltage thyristor.

[0007] Preferably, a conductive sheet is embedded in the center of the top of the clamp, and a conductive socket connected to the conductive sheet is provided on the outer side of the force-bearing seat.

[0008] Preferably, the clamp is flush with the top of the force-bearing seat, the limiting plate extends to the upper side of the force-bearing seat, and the limiting plate is perpendicular to the force-bearing seat. The inner side of each of the multiple limiting plates is provided with a bonding piece.

[0009] Preferably, one end of the clamp is provided with a hinge shaft, and the clamp is rotatably connected to the support through the hinge shaft. Multiple clamps and hinge shafts are used in an umbrella-shaped structure. The pushing mechanism includes an electric push rod, and the telescopic end of the electric push rod is provided with a buffer spring connected to the support.

[0010] Preferably, the other end of the clamp is provided with a sliding shaft, and the clamp seat is provided with a sliding groove that cooperates with the sliding shaft to slide.

[0011] Preferably, a damping shaft seat is provided on the top of the limiting plate, an adjusting shaft is rotatably connected in the damping shaft seat, a pressing block is provided on one side of the adjusting shaft, and an elastic pad is provided on the outside of the pressing block.

[0012] Preferably, the top of the limiting plate is provided with an adjustment groove, and multiple limiting pads are arranged in a straight line on the inner side of the adjustment groove. An adjustment rod is connected through the adjustment groove, and the top of the adjustment rod is connected to the damping shaft seat.

[0013] Preferably, the outer end of the clamping block is chamfered.

[0014] Compared with existing technologies, the high-power high-voltage thyristor test fixture provided by this utility model has a uniform clamping structure, which facilitates the clamping of thyristors of different specifications. The force is uniform at each clamping end, and the test operation is highly safe. Specifically, by using the clamping seat on the force-bearing base, the high-voltage thyristor to be tested can be placed in the top center of the clamping seat. By using the downward pull of the pushing mechanism, multiple limiting plates can be brought together in the middle to limit the outer side of the high-voltage thyristor, achieving uniform clamping of the high-voltage thyristor and increasing the application range of the fixture. Finally, the use of the buffer spring on the support provides favorable conditions for pressing the high-voltage thyristor during the test, increasing the safety of the fixture during use.

[0015] Furthermore, the use of the adjusting rod at the lower end of the damping bearing facilitates the addition of a height adjustment structure between the clamping plate and the limiting plate, allowing for more flexible clamping of the high-voltage thyristor. The use of the damping bearing, connecting shaft, and clamping block on the limiting plate facilitates the placement of insulating material during the high-voltage thyristor compression test, pressing the insulating material onto the high-voltage thyristor and preventing material displacement. This reduces the influence of the tester's hands on the test data, increases the accuracy of the high-voltage thyristor test, and is highly beneficial for the stable use of the test fixture.

[0016] It should be understood that the general descriptions and details herein are exemplary and illustrative only and are not intended to limit this disclosure.

[0017] This application provides an overview of various implementations or exemplary embodiments of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the high-power high-voltage thyristor test fixture of this utility model;

[0019] Figure 2 This is a partial structural cross-sectional view of the high-power high-voltage thyristor test fixture of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the clamp and the pushing mechanism in the high-power high-voltage thyristor test fixture of this utility model;

[0021] Figure 4 This is a partial structural diagram of the limiting plate, clamping block, and clamping seat in the high-power high-voltage thyristor test fixture of this utility model;

[0022] Figure 5 This is an exploded view of the structure of the limiting plate and clamping block in the high-power high-voltage thyristor test fixture of this utility model.

[0023] Key reference numerals:

[0024] 1. Base; 2. Force-bearing seat; 3. Clamping seat; 4. Clamping foot; 5. Hinge shaft; 6. Support seat; 7. Buffer spring; 8. Pushing mechanism; 9. Sliding shaft; 10. Sliding groove; 11. Limiting plate; 12. Adhesive piece; 13. Damping shaft seat; 14. Adjusting shaft; 15. Pressing block; 16. Elastic pad; 17. Adjusting groove; 18. Limiting pad; 19. Adjusting rod; 20. Conductive sheet; 21. Conductive socket. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the embodiments of this disclosure will be described in more detail below with reference to the accompanying drawings. Note: The described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0026] As attached Figure 1 To be continued Figure 5As shown in the figure, the high-power high-voltage thyristor test fixture provided in this embodiment of the present invention is currently used for high-voltage thyristor testing. The test fixture is placed on a flat surface, with the base 1 of the fixture fitting against the surface. A force-bearing seat 2 is provided on the top of the base 1, serving as the placement end for the high-voltage thyristor. To facilitate uniform clamping of the high-voltage thyristor, a clamping seat 3 can be installed through the top of the force-bearing seat 2. Multiple clamping feet 4 are then slidably installed within the clamping seat 3, with the ends of the multiple clamping feet 4 hinged to the same support 6. The clamping feet 4 can rotate at an angle relative to the support 6. Then, a pushing mechanism 8 is set at the bottom of the support 6, which serves as a driving structure for the multiple clamping feet 4 to retract or open inward. The pushing mechanism 8 itself can be length-adjusted, and the height of the support 6 can be raised or lowered by extending or retracting the length of the pushing mechanism 8. Next, a limiting plate 11 is set at the top of the clamping feet 4. The limiting plate 11 serves as a side contact structure for the high-voltage thyristor. By applying the action of the multiple clamping feet 4 retracting inward or opening outward, it can simultaneously clamp and release the high-voltage thyristor, so as to achieve uniform clamping of the high-voltage thyristor by the test fixture.

[0027] It is worth noting that, in order to facilitate the testing of high-voltage thyristors by the test fixture, such as... Figure 2 As shown, a conductive sheet 20 can be set in the middle of the top of the clamp 3. The conductive sheet 20 is embedded in the clamp 3 to achieve a larger area of ​​limiting clamping for the high-voltage thyristor. Then, a conductive socket 21 is set on the outside of the force-bearing seat 2. The conductive socket 21 is connected to the conductive sheet 20 in a circuit. When the test is performed, the multimeter probes can be inserted into the conductive socket 21 for limiting and fixing, which provides favorable conditions for the test of the high-voltage thyristor and increases the test convenience of the fixture. In addition, the conductive sheet 20 can be made of copper, aluminum or aluminum alloy materials to facilitate the conductive connection of the lower electrode of the high-voltage thyristor.

[0028] Furthermore, to ensure the stable clamping of the high-voltage thyristor on the fixture, such as... Figure 2 and 4 As shown, the clamp 3 can be flush with the top of the support seat 2 to achieve structural integration between the clamp 3 and the support seat 2, which facilitates the support seat 2 to support the high voltage thyristor over a larger area. In addition, the length of the limiting plate 11 will be extended to the upper side of the support seat 2. Multiple limiting plates 11 can form a clamping space on the upper side of the support seat 2 for the high voltage thyristor to be positioned. The limiting plate 11 is vertically located on the support seat 2. In order to prevent the limiting plate 11 from deviating from the high voltage thyristor, a bonding piece 12 can be provided on the inner side of multiple limiting plates 11. The bonding piece 12 can be made of elastic materials such as silicone to increase the friction and connection strength with the high voltage thyristor.

[0029] It is worth noting that, for example Figure 3As shown, in some embodiments, to facilitate the inward or outward retraction of multiple clamping feet 4, a hinge shaft 5 can be provided at one end of the clamping feet 4, so that the clamping feet 4 can be rotatably connected to the support 6 through the hinge shaft 5. The multiple clamping feet 4 can be used in an umbrella-shaped structure as the pushing mechanism 8 extends and retracts. Furthermore, the pushing mechanism 8 can use an electric push rod, and a buffer spring 7 is sleeved on the extension end of the electric push rod. One end of the buffer spring 7 is fixedly connected to the electric push rod, and the other end of the buffer spring 7 is fixedly connected to the support 6. Damping pads are provided at both ends of the buffer spring 7. By utilizing the elastic extension and retraction of the spring and the friction between the spring and the damping pad, the vibration between the support 6 and the electric push rod is reduced, thereby increasing the stability of the pushing mechanism 8.

[0030] like Figure 4 As shown, in some embodiments, to facilitate the sliding of the clamping foot 4 on the clamping base 3, a sliding shaft 9 is provided at the other end of the clamping foot 4, and a sliding groove 10 is opened in the clamping base 3 to cooperate with the sliding shaft 9. When the clamping foot 4 is pushed or pulled by the support base 6, the clamping foot 4 can move in position in the sliding groove 10 using the sliding shaft 9, providing favorable conditions for clamping and using multiple clamping feet 4 to retract inward or open outward.

[0031] Furthermore, in some embodiments, the limiting plate 11 can be structurally modified to have a downward clamping end, facilitating the placement of insulating material on the high-voltage thyristor, such as... Figure 4 As shown, in some embodiments, a damping bearing seat 13 can be provided on the top of the limiting plate 11, and an adjusting shaft 14 can be rotatably connected to the middle of the damping bearing seat 13. A clamping block 15 is provided on one side of the adjusting shaft 14. When the clamping block 15 is in use, its tilt angle can be adjusted by the damping bearing seat 13. Furthermore, a nut can be screwed onto one end of the adjusting shaft 14. By tightening the nut onto the damping bearing seat 13, the use angle of the clamping block 15 can be limited and fixed, thereby increasing the clamping firmness of the high-voltage thyristor.

[0032] In some embodiments, to facilitate the clamping of high-voltage thyristors of different heights, such as Figure 5 As shown, an adjustment groove 17 can be opened on the top of the limiting plate 11, and then multiple limiting pads 18 are arranged in a straight line inside the adjustment groove 17. An adjustment rod 19 is connected through the adjustment groove 17. The adjustment rod 19 can drive the multiple limiting pads 18 to extend upward from the limiting plate 11 by different lengths, change the distance between the clamping block 15 and the clamping seat 3, thereby adjusting the clamping height of the fixture and expanding the application range of the fixture.

[0033] like Figure 5 As shown, in order to further facilitate the clamping of the insulating material, in some embodiments, an elastic pad 16 can be provided on the outside of the clamping block 15, and the outer end of the clamping block 15 can be set as a chamfer to increase the contact area between the clamping block 15 and the insulating material and improve the use effect of the test clamp.

[0034] Of course, the above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A high-power high-voltage thyristor test fixture, comprising a base (1), wherein a force-bearing seat (2) is provided on the top of the base (1), characterized in that: The top of the force-bearing seat (2) is provided with a clamping seat (3), and multiple clamping feet (4) are slidably provided in the clamping seat (3). The ends of the multiple clamping feet (4) are hinged to the same support seat (6). The bottom of the support seat (6) is provided with a pushing mechanism (8), and the top of the clamping feet (4) is provided with a limiting plate (11) for uniform clamping of the high-voltage thyristor.

2. The high-power high-voltage thyristor test fixture as described in claim 1, characterized in that, A conductive sheet (20) is embedded in the middle of the top of the clamp (3), and a conductive socket (21) connected to the conductive sheet (20) is provided on the outside of the force-bearing seat (2).

3. The high-power high-voltage thyristor test fixture as described in claim 1, characterized in that, The clamp (3) is flush with the top of the force-bearing seat (2), the limiting plate (11) extends to the upper side of the force-bearing seat (2), and the limiting plate (11) is perpendicular to the force-bearing seat (2). The inner side of each of the multiple limiting plates (11) is provided with a bonding piece (12).

4. The high-power high-voltage thyristor test fixture as described in claim 1, characterized in that, One end of the clamp (4) is provided with a hinge shaft (5), and the clamp (4) is rotatably connected to the support (6) through the hinge shaft (5). Multiple clamps (4) and hinge shafts (5) are used in an umbrella-shaped structure. The pushing mechanism (8) includes an electric push rod, and the telescopic end of the electric push rod is provided with a buffer spring (7) connected to the support (6).

5. The high-power high-voltage thyristor test fixture as described in claim 4, characterized in that, The other end of the clamp (4) is provided with a sliding shaft (9), and the clamp (3) is provided with a sliding groove (10) that cooperates with the sliding shaft (9) to slide.

6. The high-power high-voltage thyristor test fixture as described in claim 1, characterized in that, The top of the limiting plate (11) is provided with a damping shaft seat (13), and an adjusting shaft (14) is rotatably connected in the damping shaft seat (13). A pressing block (15) is provided on one side of the adjusting shaft (14).

7. The high-power high-voltage thyristor test fixture as described in claim 6, characterized in that, The top of the limiting plate (11) is provided with an adjustment groove (17), and multiple limiting pads (18) are arranged in a straight line on the inner side of the adjustment groove (17). An adjustment rod (19) is connected through the adjustment groove (17), and the top of the adjustment rod (19) is connected to the damping shaft seat (13).

8. The high-power high-voltage thyristor test fixture as described in claim 7, characterized in that, An elastic pad (16) is provided on the outer side of the clamping block (15), and the outer end of the clamping block (15) is chamfered.

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