Power device test tool

Abstract

The utility model belongs to the field of power device testing, and particularly discloses a power device testing tool which comprises an operation table used for installing a power device, a testing assembly used for testing the power device and a protection box body which covers the outer side of the testing assembly and is used for safety protection. A positioning block used for installing a power device is arranged on the operation table, an opening allowing the positioning block to enter and exit the protection box body is formed in the protection box body, the operation table is arranged in a sliding mode in the direction parallel to the axis of the opening, and after the positioning block is inserted into the opening, the operation table is attached to the outer wall of the protection box body, so that a closed testing space is formed in the protection box body. By adopting the scheme provided by the utility model, the problem that unqualified products are likely to explode to hurt operators in the testing process can be solved; and when the power device is installed to a to-be-tested position, the distance between the hand of an operator and a test probe is relatively close, and the operator can be hurt when the operator touches the test probe by mistake.

Description

TECHNICAL FIELD

[0001] The utility model belongs to power device test field, concretely relates to a kind of power device test tool. BACKGROUND

[0002] Power device is widely used in household appliances, transportation, power engineering, renewable energy and smart grid and other fields, to ensure the reliability of power device, power device needs to pass strict performance test (usually including static test, dynamic test, insulation test etc.) at production end.But in the testing process, unqualified products are likely to explode and cause harm to operators, especially the dynamic test of power device, the safety risk is higher.

[0003] In addition, the test condition of power device is often several hundred to several thousand volts of DC high voltage, and large capacity capacitor of farad level is also used in test circuit, when installing power device to the position to be tested, the hand of operator and test probe are close, and the harm to operator will also be caused by mistake to test probe. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the utility model provides a kind of power device test tool, to solve the problem that unqualified products are likely to explode and cause harm to operators in the testing process;When installing power device to the position to be tested, the hand of operator and test probe are close, and the harm to operator will also be caused by mistake to test probe.

[0005] According to the embodiment of the utility model, the utility model adopts the following technical scheme:

[0006] A kind of power device test tool, including the operating platform for installing power device, test component for testing power device and the protective box body for safety protection covered in test component outside;Positioning block for installing power device is provided on operating platform, opening is opened on protective box body for positioning block to enter and exit protective box body, operating platform is slidably arranged along the direction parallel to opening axis, after positioning block is inserted into opening, operating platform and protective box body outer wall are pasted and make that protective box body forms enclosed test space in it.

[0007] Further, positioning block is detachably connected on operating platform, positioning groove for clamping power device is opened on positioning block.

[0008] Further, it further includes installation platform, operating platform is slidably connected on installation platform, installation platform is slidably connected with push shaft for pushing operating platform, push shaft is connected with operating platform, and drive member for driving push shaft movement is further installed on installation platform.

[0009] Further, the mounting platform is movably arranged relative to the protection box body, and the operating table has a state of covering the space of the protection box body and a state of deviating from the space of the protection box body during movement of the mounting platform.

[0010] Further, the mounting platform is movably arranged relative to the protection box body, and the operating table has a state of covering the space of the protection box body and a state of deviating from the space of the protection box body during movement of the mounting platform.

[0011] Further, the mounting platform is movably arranged relative to the protection box body, and the operating table has a state of covering the space of the protection box body and a state of deviating from the space of the protection box body during movement of the mounting platform.

[0012] Further, the mounting platform is movably arranged relative to the protection box body, and the operating table has a state of covering the space of the protection box body and a state of deviating from the space of the protection box body during movement of the mounting platform.

[0013] Further, the mounting platform is movably arranged relative to the protection box body, and the operating table has a state of covering the space of the protection box body and a state of deviating from the space of the protection box body during movement of the mounting platform.

[0014] Further, the mounting platform is movably arranged relative to the protection box body, and the operating table has a state of covering the space of the protection box body and a state of deviating from the space of the protection box body during movement of the mounting platform.

[0015] Further, the mounting platform is movably arranged relative to the protection box body, and the operating table has a state of covering the space of the protection box body and a state of deviating from the space of the protection box body during movement of the mounting platform.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] In the scheme, when the power device is installed, the operating table is moved away from the protection box body by sliding, so that the operating table is also moved away from the test assembly, and the test probe does not cause harm to the operator, and by controlling the operating table and the protection box body, the operating table is arranged in an open space, so that the operator can easily install the power device.

[0018] During the test, the positioning block is inserted into the opening on the protection box body, the operating table is attached to the outer wall of the protection box body, and a closed test space is formed in the protection box body, so that even if explosion occurs, the explosion fragments are in the test space, and harm to the operator is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model embodiment.

[0020] Figure 2 It is a structure schematic view of the mounting platform, the mounting support and the pushing shaft in the mounting platform design mode A in the utility model embodiment. It is a structure schematic view of the mounting platform, the mounting support and the pushing shaft in the utility model embodiment.

[0021] Figure 3 This is a schematic diagram of the structure of the drive unit, operating platform, and installation platform in the embodiments of this utility model.

[0022] Figure 4 This is a schematic diagram of the limiting seat in an embodiment of the present utility model.

[0023] Figure 5 for Figure 4 A schematic diagram of the internal structure of the middle limit seat.

[0024] Figure 6 This is a schematic diagram showing the operating platform in a state that is offset from the protective box's coverage space in an embodiment of this utility model.

[0025] Figure 7 This is a schematic diagram showing the operating platform facing the space covered by the protective box in an embodiment of this utility model.

[0026] Figure 8 This is a schematic diagram showing the state in which the swing rod swings and drives the push shaft to rise in an embodiment of this utility model.

[0027] Figure 9 This is a structural design diagram of installation platform design method B in this utility model embodiment.

[0028] In the diagram: 1. Protective housing; 2. Mounting bracket; 3. Slide rail; 4. Slider; 5. Mounting platform; 6. Operating table; 7. Positioning block; 8. Power device; 9. Push plate; 10. Push rod; 11. Limiting block; 12. Push shaft; 13. Slide groove; 14. Limiting seat; 15. Limiting plate; 16. Support spring; 17. Swing rod; 18. Hinge block; 19. Rotating shaft. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings, and specific embodiments will be given.

[0030] like Figure 1 As shown, a power device testing fixture includes an operating table 6 for mounting a power device 8, a testing component for testing the power device 8, and a protective enclosure 1 covering the outside of the testing component for safety protection. The specific composition of the testing component is not described in detail in this embodiment. Conventional testing methods and structures in the prior art can be selected according to the actual tests required for the specific power device 8 (such as static tests, dynamic tests, insulation tests, etc.). It is sufficient to install the testing component inside the protective enclosure 1 and perform tests according to conventional testing principles in the prior art.

[0031] The operating table 6 is equipped with a positioning block 7 for installing power devices 8. In order to facilitate the positioning of power devices 8, the positioning block 7 has a positioning groove for locking power devices 8. In order to adapt to different models of power devices 8, the positioning block 7 can be detachably connected to the operating table 6. Specifically, the positioning block 7 is bolted to the operating table 6, and different positioning blocks 7 can be replaced to facilitate testing of different power devices 8.

[0032] The protective enclosure 1 has an opening for the positioning block 7 to enter and exit the enclosure 1. The operating platform 6 is slidably positioned along a direction parallel to the axis of the opening. After the positioning block 7 is inserted into the opening, the operating platform 6 and the outer wall of the protective enclosure 1 are in contact, forming a closed test space inside the protective enclosure 1. In this embodiment, the protective enclosure 1 is positioned above the operating platform 6, and the opening is located at the bottom of the protective enclosure 1. The vertical movement of the operating platform 6 can drive the positioning block 7 to be inserted into the opening. Correspondingly, the test component can be installed on the top of the protective enclosure 1. When the positioning block 7 is inserted into the protective enclosure 1, the power device 8 on the positioning block 7 and the test component form a certain matching relationship and are tested.

[0033] When installing the power device 8, slide the operating platform 6 downwards until the distance between the operating platform 6 and the protective housing 1 meets the safe operating distance. Then, the operator can place the power device 8 on the positioning block 7, and then slide the operating platform 6 upwards. This causes the positioning block 7 to move the power device 8 upwards and into the protective housing 1, allowing for the corresponding testing. In this embodiment, the sliding of the operating platform 6 can use a conventional driving method found in the prior art, such as cylinder drive.

[0034] In another embodiment of this utility model, to facilitate the installation of the power device 8 by the operator, a mounting platform 5 is also included. The operating table 6 is slidably connected to the mounting platform 5. In actual design, to ensure the stability of the vertical movement of the operating table 6, a vertically retractable guide column (a telescopic rod from the prior art can be selected) is connected between the operating table 6 and the mounting platform 5. Figure 2 , Figure 3 As shown, a push shaft 12 for pushing the operating table 6 is slidably connected on the mounting platform 5. The push shaft 12 and the operating table 6 are fixedly connected. Specifically, a sliding hole is provided on the mounting platform 5, and the push shaft 12 is slidably connected in the sliding hole. A drive component for driving the push shaft 12 to move is also installed on the mounting platform 5.

[0035] The mounting platform 5 is movable relative to the protective housing 1. During the movement of the mounting platform 5, the operating table 6 has a state of being directly facing the space covered by the protective housing 1 and a state of being deviated from the space covered by the protective housing 1. That is to say, in the above embodiment, when installing the power device 8, the operating table 6 needs to be slid down so that the distance between the operating table 6 and the protective housing 1 meets the safe operating distance. First, this will result in a large vertical placement space required for the entire power device 8 testing fixture in order to provide space for the vertical sliding of the operating table 6. In addition, the operator's hand needs to reach into the space under the protective housing 1, which is not convenient. Therefore, in this embodiment, the mounting platform 5 is designed to be movable. When the operating table 6 is completely deviated from the space covered by the protective housing 1 with the movement of the mounting platform 5, the operator can place the power device 8 in a completely open space, which is more convenient.

[0036] Specifically, a mounting bracket 2 is fixed to the lower end of the protective housing 1, and the mounting platform 5 is movably connected to the mounting bracket 2. The mounting bracket 2 allows the entire power device testing fixture to be placed on any plane, thus facilitating its portability and movement. Regarding the specific connection method between the mounting platform 5 and the mounting bracket 2, this embodiment provides the following two design methods, which can be selected according to the actual situation:

[0037] A. The mounting platform 5 is slidably connected to the mounting bracket 2, and the sliding direction of the mounting platform 5 is perpendicular to the sliding direction of the operating table 6. When the mounting platform 5 slides directly under the protective box 1, the positioning block 7 is vertically aligned with the opening, meaning the operating table 6 is facing the space covered by the protective box 1. When the mounting platform 5 slides out from under the protective box 1, and the positioning block 7 is no longer obstructed vertically, the operating table 6 is deviating from the space covered by the protective box 1.

[0038] B. Combination Figure 9 As shown, the mounting platform 5 is rotatably connected to the mounting bracket 2. Specifically, one end of the mounting platform 5 is rotatably connected to the mounting bracket 2 via a rotating shaft 19, and the operating table 6 is mounted on the other end of the mounting platform 5. When the mounting platform 5 rotates around the axis of the rotating shaft 19, the operating table 6 moves to directly below the protective box 1, meaning the operating table 6 is facing the space covered by the protective box 1. When the operating table 6 moves away from directly below the protective box 1 as the mounting platform 5 rotates, it means the operating table 6 is deviating from the space covered by the protective box 1. In actual design, the middle of the mounting platform 5 can also be rotatably connected to the mounting bracket 2 via the rotating shaft 19, as long as the axis of the rotating shaft 19 and the axis of the operating table 6 are not vertically coincident and have a certain distance between them.

[0039] In this embodiment, the movement of the mounting platform 5 and the movement of the operating table 6 are driven separately. For example, the mounting platform 5 is driven to slide by a cylinder in the prior art (design method A), or it is driven to rotate by a motor in the prior art (design method B). The driving component can be a cylinder installed on the mounting platform 5, which drives the operating table 6 to slide.

[0040] In another embodiment of this utility model, combined with Figure 4 , Figure 5 As shown, based on the above design method A, the driving component is further designed. Specifically, the driving component includes a limiting seat 14 fixed on the mounting platform 5, a push rod 10 slidably connected in the limiting seat 14, and a swing rod 17 connected between the push rod 10 and the push shaft 12. The sliding direction of the push rod 10 and the sliding direction of the mounting platform 5 are parallel to each other.

[0041] The swing rod 17 has hinge blocks 18 fixed at both ends, which are hinged to the push rod 10 and the push shaft 12 respectively. The limiting seat 14 has grooves 13 for sliding the hinge blocks 18 at both ends of the swing rod 17. When the push rod 10 slides horizontally, it drives the hinged swing rod 17 to swing. The swing rod 17 pushes the push shaft 12 to move vertically. The limiting seat 14 limits the swing of the swing rod 17.

[0042] The limiting seat 14 is inverted T-shape, and a transverse limiting groove is provided on the limiting seat 14 for the push rod 10 to move. Both ends of the push rod 10 are slidably set relative to the limiting seat 14. The limiting seat 14 is also provided with a vertical limiting groove for the push shaft 12 to move. The lower part of the push shaft 12 is inserted into the limiting seat 14. A mounting groove is provided in the middle of the push rod 10. The swing rod 17 is hinged to the inner wall of the mounting groove. The mounting groove facilitates the swing rod 17 to swing relative to the push rod 10.

[0043] A limiting plate 15 is fixed on the mounting platform 5. The push rod 10 is slidably connected to the limiting plate 15. A support spring 16 is fixed between the push rod 10 and the limiting plate 15. The limiting plate 15 enhances the support and limitation of the push rod 10 and provides limitation for the support spring 16. The driving component also includes a push plate 9 for connecting to or abutting against the push rod 10. Specifically, the push plate 9 is slidably connected to the mounting bracket 2. The push plate 9 can be directly fixed to the push rod 10, so that the push plate 9 can drive the push rod 10 to move together during the lateral reciprocating sliding process. The push plate 9 can also drive the push rod 10 to move in only one direction. Specifically, the push plate 9 and the limiting plate 15 are set on both sides of the support spring 16. The push plate 9 directly abuts against the end of the push rod 10 or against the limiting step set on the side wall of the push rod 10 to push the push rod 10, pushing the push rod 10 to move towards the limiting plate 15, compressing the support spring 16. When the push plate 9 moves in the opposite direction, it cannot drive the push rod 10 to move. The push rod 10 can rely on the support spring 16 to perform a certain degree of reset, or the push rod 10 can be pulled out manually by the operator. The connection method of the push plate 9 and the push rod 10 can be designed according to the actual situation.

[0044] The pre-compression pressure or pre-tension of the support spring 16 is greater than the thrust required for the sliding of the mounting platform 5. Since the limiting plate 15 and the limiting seat 14 are both fixed on the mounting platform 5, and the push rod 10 is slidably connected to the limiting seat 14, when the push rod 10 is subjected to a thrust from the push plate 9 that is less than the pre-compression pressure of the support spring 16, the push rod 10 cannot overcome the pressure of the support spring 16 to compress it. When the thrust that pushes the push plate 9 to slide meets the thrust required for the sliding of the mounting platform 5 and is less than the pre-compression pressure of the support spring 16, the support spring 16 will not contract and will push the limiting plate 15 to move together with the movement of the push rod 10. Then the push plate 9 pushes the push rod 10 to move, and the push rod 10 drives the limiting seat 14 and the mounting platform 5 to slide together.

[0045] The mounting bracket 2 is equipped with a slide rail 3 for the mounting platform 5 to slide on. Specifically, sliders 4 are fixed on both sides of the mounting platform 5, and the sliders 4 are slidably connected to the slide rail 3. The slide rail 3 is provided with a limiting block 11 to limit the sliding range of the mounting platform 5. When the end of the mounting platform 5 abuts against the limiting block 11, the mounting platform 5 can no longer slide. At this time, the push rod 10 continues to be pushed by the push plate 9, which can push the swing rod 17 to swing, thereby lifting the top push shaft 12. At this time, the support spring 16 is compressed by the combined pressure of the push rod 10 and the limiting plate 15.

[0046] In practical use, the push plate 9 is driven to move using conventional methods in existing technology (e.g., by driving the push plate 9 with a cylinder). Specifically, taking the push plate 9 directly fixed to the push rod 10 as an example, when the push plate 9 is driven to slide away from the limiting block 11, the sliding force of the push plate 9 is set to be less than the pre-tension force of the support spring 16. Therefore, the support spring 16 will not be stretched and will pull the limiting plate 15 and the mounting platform 5 together with the movement of the push rod 10, causing the operating table 6 to move away from directly below the protective box 1. See [link to relevant documentation]. Figure 6 As shown in the diagram, workers can install or remove power devices 8 on positioning block 7.

[0047] When the drive push plate 9 slides towards the limit block 11, if the sliding force of the drive push plate 9 is less than the pre-compression pressure of the support spring 16, then the push plate 9, through the push rod 10, drives the limit seat 14 and the mounting platform 5 to slide together to directly below the protective box 1, until the end of the mounting platform 5 abuts against the limit block 11, at which point the mounting platform 5 can no longer slide. Figure 7 As shown in the diagram, push rod 10 continues to be pushed by push plate 9, causing swing rod 17 to swing, thereby lifting push shaft 12. Push shaft 12 drives operating table 6 to move vertically, allowing positioning block 7 to enter protective housing 1 through opening. Figure 8 The state shown.

[0048] In this solution, only one drive source needs to be designed, namely, the push plate 9 needs to be driven to move, which can realize the movement of the installation platform 5 and the operating table 6. The control cost is low. Moreover, the operating table 6 is driven by the linkage structure of the push rod 10, the swing rod 17 and the push shaft 12 connected in sequence. The linkage structure is more economical and practical, and the end movement speed of the linkage structure approaches zero, which meets the thrust requirements of the push shaft 12, resulting in a better user experience.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A power device testing fixture, characterized in that: It includes an operating table for installing power devices, a test assembly for testing power devices, and a protective enclosure covering the outside of the test assembly for safety protection. The operating table is equipped with a positioning block for installing power devices, and the protective enclosure has an opening for the positioning block to enter and exit the protective enclosure. The operating table is slidably set in a direction parallel to the axis of the opening. After the positioning block is inserted into the opening, the operating table and the outer wall of the protective enclosure are attached to each other, so that a closed test space is formed inside the protective enclosure.

2. The power device testing fixture according to claim 1, characterized in that: The positioning block is detachably connected to the operating table, and the positioning block has a positioning groove for locking the power device.

3. A power device testing fixture according to claim 1 or 2, characterized in that: It also includes an installation platform, with the operating table slidably connected to the installation platform. A push shaft for pushing the operating table is slidably connected to the installation platform. The push shaft is connected to the operating table. A drive component for driving the push shaft is also installed on the installation platform.

4. The power device testing fixture according to claim 3, characterized in that: The installation platform is movable relative to the protective box. During the movement of the installation platform, the operating table has a state of being directly facing the space covered by the protective box and a state of being deviating from the space covered by the protective box.

5. The power device testing fixture according to claim 4, characterized in that: The installation platform is rotatable.

6. The power device testing fixture according to claim 4, characterized in that: The installation platform is slidably mounted, and the sliding direction of the installation platform is perpendicular to the sliding direction of the operating table.

7. The power device testing fixture according to claim 6, characterized in that: The driving component includes a limiting seat fixed on the mounting platform, a push rod slidably connected in the limiting seat, and a swing rod connected between the push rod and the push shaft. The sliding direction of the push rod and the sliding direction of the mounting platform are parallel to each other. The two ends of the swing rod are respectively fixed with hinge blocks that are hinged to the push rod and the push shaft. The limiting seat is provided with slide grooves for the hinge blocks at both ends of the swing rod to slide.

8. The power device testing fixture according to claim 7, characterized in that: A limit plate is fixed on the installation platform, and a push rod is slidably connected to the limit plate. A support spring is fixed between the push rod and the limit plate.

9. A power device testing fixture according to claim 8, characterized in that: The drive unit also includes a push plate for connecting to or abutting against the push rod, supporting a spring pre-compression pressure or pre-tension tension greater than the thrust required for the mounting platform to slide.

10. A power device testing fixture according to any one of claims 6-9, characterized in that: It also includes a slide rail for the installation platform to slide, and the slide rail is equipped with a limit block for limiting the sliding range of the installation platform.

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