An electrical property testing device for an electrical contact material

Abstract

This application relates to the technical field of electrical performance testing, and discloses an electrical performance testing device for electrical contact materials, which includes a base, a detection module and a sealing module. Both the detection module and the sealing module are arranged on the base. The detection module is used for testing the electrical performance of the electrical contact materials. The sealing module includes a sealing ring and a sealing cover. The sealing ring is arranged on the base, the detection module is arranged inside the sealing ring, and the sealing cover is slidably connected to the sealing ring. When the sealing cover plugs the opening of the sealing ring, the detection module is in a sealed state. In this application, the detection module is arranged inside the sealing ring, and the sealing cover plugs the opening of the sealing ring, so that the detection module is in a sealed environment. When the detection module conducts detection, the gas will be consumed when the moving contact piece and the static contact piece come into contact, creating a negative pressure environment inside the sealing ring. Therefore, the electrical contact material in the sealing ring is in a negative pressure environment.

Description

Technical Field

[0001] This application relates to the technical field of electrical performance testing, and particularly to a testing device for the electrical performance of electrical contact materials. Background Art

[0002] Electrical contact materials are usually moving contact pieces and static contact pieces. The triggering mechanism pushes the moving contact piece to abut against the static contact piece to achieve the connection of two circuits. The electrical performance test of electrical contact materials needs to be carried out through a testing device. Electrical contact materials have a wide range of application scenarios and can be applied to electrical equipment in a sealed environment or explosion-proof electrical appliances.

[0003] The testing device includes a base. A moving component is provided on the base, and a pushing bar is provided on the moving component. The moving component is used to drive the pushing bar to abut against the moving contact piece.

[0004] Electrical contact materials can be applied to a sealed environment. In the sealed environment, the gas is continuously consumed, making the electrical contact materials under negative pressure conditions. The electrical performance of electrical contact materials in a negative pressure environment is different from that in a normal environment. The electrical performance of electrical contact materials detected in a normal environment is difficult to be applicable to a negative pressure environment. Therefore, it is necessary to design a testing device that can detect the electrical performance of electrical contact materials in a sealed environment. Summary of the Invention

[0005] In order to detect the electrical performance of electrical contact materials in a sealed environment, this application provides a testing device for the electrical performance of electrical contact materials.

[0006] A testing device for the electrical performance of electrical contact materials provided by this application adopts the following technical solutions:

[0007] A testing device for the electrical performance of electrical contact materials includes a base, a detection module, and a sealing module. The detection module and the sealing module are both arranged on the base. The detection module is used to test the electrical performance of electrical contact materials. The sealing module includes a sealing ring and a sealing cover. The sealing ring is arranged on the base, the detection module is arranged inside the sealing ring, and the sealing cover is slidably connected to the sealing ring. When the sealing cover plugs the opening of the sealing ring, the detection module is in a sealed state.

[0008] By adopting the above technical solutions, the detection module is arranged inside the sealing ring, and the sealing cover plugs the opening of the sealing ring, so that the detection module is in a sealed environment. When the detection module conducts detection, the gas will be consumed when the moving contact piece and the static contact piece come into contact, forming a negative pressure environment inside the sealing ring. Therefore, the electrical contact materials in the sealing ring are in a negative pressure environment; or the staff evacuates the air externally and then plugs the sealing ring with the sealing cover to achieve a negative pressure environment for the electrical contact materials; thus, the electrical performance of the electrical contact materials can be detected in a negative pressure environment or a normal environment.

[0009] Optionally, the detection module includes a pushing structure, a placing structure, and a mounting structure. The mounting structure is for mounting the moving contact piece. The pushing structure includes a pushing component and a pushing moving component. The pushing component is disposed on the pushing moving component, and the pushing moving component is disposed on the base. The pushing component is used to push the moving contact piece, and the pushing moving component is used to drive the pushing component to adjust its position. The placing structure includes a placing seat and a placing moving component. The placing seat is disposed on the placing moving component, and the placing moving component is disposed on the base. The placing seat is for placing the static contact piece, and the placing moving component is used to adjust the position of the static contact piece.

[0010] By adopting the above technical solution, since the moving contact piece is disposed on the pushing component, the pushing moving component can drive the pushing component to move, realizing the position adjustment of the moving contact piece to adapt to moving contact pieces of different sizes; since the static contact piece is placed on the placing seat and the placing moving component drives the placing seat to move, the placing moving component can adjust the position of the static contact piece, enabling the static contact piece to adapt to moving contact pieces of different heights, and increasing the range of the detection module for detecting the electrical properties of electrical contact materials of different sizes.

[0011] Optionally, the pushing moving component includes a rotating rod, a fixing strip, and a fixing seat. The fixing seat is disposed on the base. The rotating rod is rotatably connected to the fixing seat. The fixing strip is threadedly connected to the rotating rod. The fixing strip is slidably disposed on the fixing seat. The pushing component is disposed on the fixing strip. When the rotating rod rotates, the rotating rod drives the fixing strip to approach or move away from the mounting structure.

[0012] By adopting the above technical solution, the staff rotates the rotating rod. The rotating rod rotates on the fixing seat. Since the fixing strip is threadedly connected to the rotating rod, the fixing strip can move on the fixing seat, so that the fixing strip can drive the pushing component to move. Due to the different distances between the fixing strip and the mounting structure, the pushing distance of the pushing component on the moving contact piece is different, and further enables the moving contact piece and the static contact piece to fit better, further increasing the stability of the electrical property test of the electrical contact material.

[0013] Optionally, the mounting structure includes a mounting seat, a mounting block, and a mounting bolt. The mounting seat is provided with a mounting groove for inserting the mounting block. The mounting bolt is rotatably connected to the mounting block. The mounting bolt is threadedly connected to the mounting seat. When the mounting bolt is threadedly connected to the mounting seat, the mounting block is fixed to the mounting seat. At this time, the moving contact piece is fixed between the mounting block and the wall of the mounting groove.

[0014] By adopting the above technical solution, the mounting block is threadedly connected to the mounting seat through the mounting bolt, enabling the mounting block and the mounting seat to be fixed to each other, so that the movable contact can be positioned between the mounting block and the inner wall of the mounting groove, thereby enabling the movable contact to be stably located on the mounting seat and reducing the possibility of the movable contact disengaging from the mounting seat.

[0015] Optionally, a plugging cover is slidably connected to the sealing cover. The sealing ring is provided with a first sealing strip and a second sealing strip, both of which extend along the inner wall of the sealing ring. The sealing cover is provided with a plugging block; when the plugging block is located between the first sealing strip and the second sealing strip, the plugging cover can plug the sealing ring.

[0016] By adopting the above technical solution, the staff first slides the sealing cover to plug the sealing ring, and then the staff slides the plugging cover to make the plugging cover located inside the sealing ring, so that the plugging block is located between the first sealing strip and the second sealing strip. Since the first sealing strip and the second sealing strip extend along the inner wall of the sealing ring, the plugging block, the first sealing strip and the second sealing strip can seal the inside of the sealing ring, enabling the detection module to be in a sealed environment. When the electrical contact material is subjected to electrical performance testing, the gas inside the sealing ring is consumed, making the detection module in a negative pressure environment, making the detection of the electrical contact material more accurate and simulating the detection of the electrical contact material in a sealed state.

[0017] Optionally, a through hole is formed in the sealing ring, and a moving strip is slidably connected in the through hole. The moving strip is located between the first sealing strip and the second sealing strip; when the plugging block is located between the first sealing strip and the second sealing strip, the moving strip protrudes from the outer wall of the sealing ring.

[0018] By adopting the above technical solution, since the moving strip is located between the first sealing strip and the second sealing strip, when the plugging cover is located inside the sealing ring and the plugging block is located between the first sealing strip and the second sealing strip, the plugging block pushes the moving strip to move in the through hole, enabling the moving strip to protrude from the outer wall of the sealing ring. At this time, the staff can know that there is no need to push the plugging cover any further, and the inside of the sealing ring is in a sealed state, preventing the staff from over-pushing the plugging cover and causing the plugging block to disengage from between the first sealing strip and the second sealing strip.

[0019] Optionally, a locking strip is rotatably connected to the sealing cover, and a moving groove for the moving strip to insert is formed on the locking strip; when the moving strip is inserted into the moving groove, the locking strip restricts the movement of the sealing cover.

[0020] By adopting the above technical solution, when the plugging cover plugs the sealing ring, the moving strip protrudes from the outer wall of the sealing ring. At this time, the staff rotates the locking strip so that the moving strip can be located in the moving groove, enabling the moving strip to restrict the movement of the locking strip and allowing the locking strip to be stably located on the sealing ring, achieving the mutual fixation of the sealing ring and the sealing cover and preventing the sealing cover from moving on the sealing ring.

[0021] Optionally, an operation hole communicating with the through hole is formed in the sealing ring. An operation strip is slidably connected in the operation hole. An air extraction hole communicating with the operation hole is formed in the sealing ring. An air extraction member is arranged on the sealing ring. The air extraction member extracts air from the inside of the sealing ring through the air extraction hole. The air extraction hole is located on the moving path of the operation strip. An operation groove for the operation strip to insert is formed in the moving strip; when the operation strip is inserted into the operation groove, the moving strip does not block the air extraction hole; when the moving strip does not protrude from the outer wall of the sealing ring, the operation groove is not on the moving path of the moving strip.

[0022] By adopting the above technical solution, the staff slides the operation strip so that the operation strip does not block the air extraction hole. The air extraction member can perform air extraction treatment on the inside of the sealing ring through the air extraction hole, making the inside of the sealing ring in a negative pressure state without the need for the electric contact material to consume some gas. At this time, the operation strip is inserted into the operation groove; if the moving strip does not protrude from the outer wall of the sealing ring and the operation groove is not on the moving path of the moving strip, it is difficult for the operation strip to be inserted into the operation groove at this time. The staff can know that the sealing cover is not sealed in place when moving the operation strip, avoiding the operation of allowing the air extraction member to extract air when it is not sealed in place.

[0023] Optionally, an exhaust hole is formed in the operation strip, and an air release hole communicating with the operation hole is formed in the sealing ring; when the operation strip is inserted into the operation groove, the operation strip blocks the air release hole.

[0024] By adopting the above technical solution, when the operation strip is inserted into the operation groove, the operation strip can block the air release hole, making it difficult for external gas to enter the inside of the sealing ring from the air release hole; after the detection of the electric contact material is completed, the staff slides the operation strip to connect the exhaust hole in the operation strip with the air release hole, enabling the air outside the sealing ring to enter the inside of the sealing ring, making the inside of the sealing ring in a normal state, facilitating the subsequent movement of the sealing cover by the staff, reducing the situation of damage to the sealing cover caused by the negative pressure state inside the sealing ring, and prolonging the service life of the sealing cover.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The detection module is arranged inside the sealing ring, and the sealing cover plugs the opening of the sealing ring, so that the detection module is in a sealed environment. When the detection module conducts detection, the gas will be consumed when the moving contact piece and the static contact piece come into contact, creating a negative pressure environment inside the sealing ring. Therefore, the electrical contact material in the sealing ring is in a negative pressure environment; or the staff evacuates the air externally and then plugs the sealing ring with the sealing cover to achieve a negative pressure environment for the electrical contact material; thus, the electrical properties of the electrical contact material can be detected in a negative pressure environment or a normal environment.

[0027] 2. The staff rotates the rotating rod, and the rotating rod rotates on the fixed seat. Since the moving strip is threadedly connected to the rotating rod, the moving strip can move on the fixed seat, and thus the moving strip can drive the pushing component to move. Since the acting force of the pushing component on the moving contact piece is the same, due to the different distances between the moving strip and the mounting structure, the acting force of the pushing component on the moving contact piece is different, and further the moving contact piece can abut against the static contact piece with different acting forces to test the electrical properties of the electrical contact material under different pressures. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of Embodiment 1;

[0029] Figure 2 is a schematic structural diagram highlighting the detection module in Embodiment 1;

[0030] Figure 3 is a schematic structural diagram highlighting the mounting structure in Embodiment 1;

[0031] Figure 4 is Figure 3 an enlarged schematic diagram of part A in

[0032] Figure 5 is a schematic structural diagram of Embodiment 2;

[0033] Figure 6 is along Figure 5 a cross-sectional view taken along line B-B in

[0034] Figure 7 is Figure 6 an enlarged schematic diagram of part C in

[0035] Reference signs: 1, base; 2, detection module; 21, pushing structure; 22, placing structure; 221, placing seat; 222, placing moving component; 223, placing height component; 23, mounting structure; 231, mounting seat; 232, mounting block; 233, mounting bolt; 234, mounting groove; 24, pushing component; 25, pushing moving component; 251, rotating rod; 252, fixing strip; 253, fixing seat; 254, fixing block; 26, height moving component; 261, height seat; 262, rotating rod; 263, height strip; 264, moving block; 265, height block; 266, height convex block; 267, rotating hole; 268, first rotating block; 269, second rotating block; 3, sealing module; 31, sealing ring; 311, first sealing strip; 312, second sealing strip; 32, sealing cover; 321, locking strip; 322, moving groove; 33, air extraction hole; 331, air extraction component; 34, perforation; 341, moving strip; 342, operation groove; 35, operation hole; 351, operation strip; 352, operation block; 36, through hole; 37, air release hole; 371, exhaust hole; 4, plugging cover; 41, plugging ring; 42, plugging block. Detailed implementation mode

[0036] The following further describes the present application in detail with reference to the appended Figure 1-7 drawings.

[0037] Embodiment 1

[0038] This embodiment discloses an electrical performance testing device for electrical contact materials. Refer to Figure 1 and Figure 2 , an electrical performance testing device for electrical contact materials, including a base 1, a detection module 2 and a sealing module 3, and the detection module 2 and the sealing module 3 are both arranged on the base 1.

[0039] Refer to Figure 2 and Figure 3 , the detection module 2 includes a pushing structure 21, a placing structure 22 and a mounting structure 23, the mounting structure 23 includes a mounting seat 231, a mounting block 232 and a mounting bolt 233, and the mounting seat 231 is fixedly connected to the base 1. An installation groove 234 for placing the installation block 232 is opened on the side surface of the installation seat 231, and the installation groove 234 penetrates horizontally to one side of the installation seat 231.

[0040] Refer to Figure 3, the mounting bolt 233 is rotatably connected to the mounting block 232, and the mounting bolt 233 is threadedly connected to the mounting groove 234. When the mounting bolt 233 is threadedly connected to the mounting seat 231, the mounting block 232 can be fixed within the mounting groove 234. The staff first places the moving contact piece within the mounting groove 234, and then threadedly connects the mounting bolt 233 to the mounting seat 231. At this time, the moving contact piece is located between the groove wall of the mounting groove 234 and the mounting block 232, achieving the fixation of one end of the moving contact piece to the fixed seat 253.

[0041] Refer to Figure 2 and Figure 3 , the pushing structure 21 includes a pushing component 24, a pushing and moving component 25, and a height moving component 26. The pushing component 24 includes a pushing cylinder, and the driving shaft of the pushing cylinder can abut against the moving contact piece. The pushing and moving component 25 includes a rotating rod 251, a fixing strip 252, and a fixed seat 253. The fixed seat 253 is fixedly connected to the base 1, and a fixing block 254 is fixedly connected to the fixed seat 253. The rotating rod 251 is rotatably connected to the fixing block 254. The height moving component 26 is fixedly connected to the fixing strip 252. The rotating rod 251 is threadedly connected to the fixing strip 252, and the fixing strip 252 is slidably connected to the fixed seat 253. When the rotating rod 251 rotates, the rotating rod 251 drives the fixing strip 252 to move on the fixed seat 253, enabling the fixing strip 252 to move in a direction closer to or farther away from the mounting structure 23.

[0042] Refer to Figure 3 and Figure 4 , the height moving component 26 includes a height seat 261, a rotating rod 262, and a height strip 263. The static contact piece is detachably connected to the height seat 261, and the height seat 261 is slidably connected to the fixing strip 252. A moving block 264 is fixedly connected to the surface of the fixing strip 252, and the rotating rod 262 is rotatably connected to the moving block 264.

[0043] Refer to Figure 4 , the height strip 263 is rotatably connected to the fixing strip 252, and a height block 265 is fixedly connected to the surface of the height strip 263. The height block 265 and the height strip 263 extend in different directions and are perpendicularly arranged to each other. A height convex block 266 is fixedly connected to the surface of the height seat 261, and the height convex block 266 is located on the rotation path of the height block 265.

[0044] Refer to Figure 4, a rotating hole 267 is formed on the surface of the height bar 263. The rotating rod 262 passes through the rotating hole 267, and the rotating hole 267 extends along the length direction of the height bar 263. A first rotating block 268 and a second rotating block 269 are fixedly connected to the surface of the rotating rod 262. The height bar 263 is located between the first rotating block 268 and the second rotating block 269, and the gap between the first rotating block 268 and the second rotating block 269 is greater than the thickness of the height bar 263.

[0045] Refer to Figure 3 and Figure 4 , when the rotating rod 262 rotates, the first rotating block 268 or the second rotating block 269 can push the height bar 263 to move, enabling the height bar 263 to rotate on the fixed bar 252. The height bar 263 drives the height block 265 to move, and the height block 265 pushes the height convex block 266 to move, so that the height seat 261 can move, allowing the static contact piece to adjust its height to adapt to the moving contact pieces of different heights.

[0046] Refer to Figure 2 , Figure 3 and Figure 4 , the placing structure 22 includes a placing seat 221, a placing moving component 222 and a placing height component 223. The placing seat 221 is fixedly connected to the base 1. The structure of the placing moving component 222 is the same as that of the pushing moving component 25, and the structure of the placing height component 223 is the same as that of the height moving component 26.

[0047] Refer to Figure 1 and Figure 2 , the sealing module 3 includes a sealing ring 31 and a sealing cover 32. The sealing ring 31 is fixedly connected to the base 1, and the detection module 2 is located inside the sealing ring 31. The sealing cover 32 is slidably connected to the sealing ring 31. When the sealing cover 32 completely seals the opening of the sealing ring 31, the detection module 2 is inside the sealing ring 31.

[0048] Refer to Figure 1 , an air extraction hole 33 is formed on the side wall of the sealing ring 31, and an air extraction component 331 is provided on the base 1. The air extraction component 331 can extract air from the inside of the sealing ring 31 through the air extraction hole 33, creating a negative pressure inside the sealing ring 31. Or the air extraction component 331 can fill the inside of the sealing ring 31 with inert gas, making the inside of the sealing ring 31 at normal air pressure and filled with inert gas.

[0049] The implementation principle of Embodiment 1 is as follows: The staff first installs the moving contact piece in the installation groove 234, then rotates the installation bolt 233 to make the installation block 232 abut against the moving contact piece to complete the installation of the moving contact piece. And the static contact piece is installed on the placing seat 221, and then the pushing cylinder is started to drive the moving contact piece to abut against the static contact piece to realize the detection of the electrical contact material.

[0050] Embodiment 2

[0051] Referring to Figure 5 and Figure 6 , the difference between this embodiment and Embodiment 1 is that a first sealing strip 311 and a second sealing strip 312 are fixedly connected to the inner wall of the sealing ring 31. Both the first sealing strip 311 and the second sealing ring 31 extend along the circumferential direction of the sealing ring 31, and there is a certain distance between the first sealing strip 311 and the second sealing strip 312.

[0052] Referring to Figure 6 and Figure 7 , a plugging cover 4 is slidably connected to the surface of the sealing cover 32. A plugging ring 41 is fixedly connected to the surface of the plugging cover 4 facing the base 1. The plugging ring 41 extends along the circumferential direction of the plugging cover 4. Two plugging blocks 42 are fixedly connected to the outer surface of the plugging ring 41. When the plugging cover 4 protrudes from the sealing cover 32, the surface of the plugging ring 41 away from the plugging cover 4 and the surface of the sealing cover 32 can be coplanar. The staff presses the plugging cover 4 to make the plugging ring 41 located inside the sealing ring 31. At this time, the plugging blocks 42 are located between the first sealing strip 311 and the second sealing strip 312.

[0053] Referring to Figure 7 , a through hole 34 is opened on the inner wall of the sealing ring 31. A moving strip 341 is slidably connected at the through hole 34. The moving strip 341 can be located between the first sealing strip 311 and the second sealing strip 312. When the moving strip 341 is not on the outer surface of the sealing ring 31, one end of the moving strip 341 is located between the first sealing strip 311 and the second sealing strip 312. If the plugging block 42 moves between the first sealing strip 311 and the second sealing strip 312, the plugging block 42 drives the moving strip 341 to move, so that the moving strip 341 protrudes from the outer surface of the sealing ring 31. At this time, the staff can know that the plugging cover 4 has been sealed.

[0054] Referring to Figure 7 , two locking strips 321 are rotatably connected to the surface of the sealing cover 32. The locking strips 321 have a certain elastic deformation ability. A moving groove 322 for inserting the moving strip 341 is opened on the surface of the locking strips 321. When the moving strip 341 protrudes from the outer surface of the sealing ring 31, the staff rotates the locking strips 321 to make the moving strip 341 located in the moving groove 322. At this time, the moving strip 341 restricts the movement of the locking strips 321.

[0055] Referring to Figure 7, an operation hole 35 communicating with the through hole 34 is provided in the sealing ring 31, the air extraction hole 33 communicates with the operation hole 35, and an operation bar 351 is slidably connected in the operation hole 35. A through hole 36 communicating with the operation hole 35 is provided on the outer surface of the sealing ring 31, and the through hole 36 extends in the vertical direction. An operation block 352 is fixedly connected to the surface of the operation bar 351, and the operation block 352 slides in the through hole 36. An operation groove 342 for inserting the operation bar 351 is provided on the surface of the moving bar 341 facing the operation hole 35. When the moving bar 341 protrudes from the outer wall of the sealing ring 31, the operation groove 342 is located on the moving path of the operation bar 351. When the moving bar 341 protrudes from the inner wall of the sealing ring 31, the operation groove 342 is not on the moving path of the operation bar 351.

[0056] Referring to Figure 7 , an air release hole 37 communicating with the operation hole 35 is provided on the sealing ring 31, and an exhaust hole 371 is provided on the surface of the operation bar 351. When the operation bar 351 is located in the operation groove 342, the operation bar 351 blocks the exhaust hole 371. When the operation bar 351 disengages from the operation groove 342, the exhaust hole 371 can communicate with the air release hole 37. At this time, the operation bar 351 circulates gas through the exhaust hole 371 to make the air pressure inside the sealing ring 31 the same as the air pressure outside the sealing ring 31, so as to facilitate the staff to slide the plugging cover 4.

[0057] Referring to Figure 7 , the staff slides the operation bar 351 to make the operation bar 351 disengage from the operation groove 342. At this time, when the operation bar 351 moves, the exhaust hole 371 and the air release hole 37 are aligned, so that the gas inside the sealing ring 31 and the gas outside the sealing ring 31 can circulate until the air pressure inside the sealing ring 31 is the same. At this time, the staff can pull the plugging cover 4 to make the sealing cover 32 slide on the sealing ring 31. The staff continues to move the operation bar 351 to make the operation bar 351 block the air extraction hole 33. At this time, the operation bar 351 blocks the air release hole 37, realizing a sealed state inside the sealing ring 31.

[0058] The implementation principle of Embodiment 2 is as follows: The staff first slides the sealing cover 32 to block the opening of the sealing ring 31. At this time, the staff presses the plugging cover 4 to make the plugging block 42 located between the first sealing strip 311 and the second sealing strip 312. The plugging block 42 drives the moving bar 341 to protrude from the outer wall of the sealing ring 31. Then the staff rotates the locking bar 321 to make the moving bar 341 located in the moving groove 322, so that the moving bar 341 limits the sealing cover 32. Finally, according to whether a negative pressure environment is needed, the staff slides the operation bar 351 to make the operation bar 351 insert into the operation groove 342. At this time, the air extraction member 331 extracts the gas inside the sealing ring 31.

[0059] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the ordinary meanings as understood by those of ordinary skill in the art to which this application pertains. The terms "first", "second", "third" and similar terms used in the specification and claims of this application do not denote any order, quantity or importance, but are merely used to distinguish different components. Similar terms such as "a" or "an" do not denote a quantity limitation, but rather denote the presence of at least one. Similar terms such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. Terms such as "upper", "lower", "left", "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0060] The above are only the preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of this application shall be included within the protection scope of this application.

Claims

1. An electrical property testing device for an electrical contact material, characterized in that: It includes a base (1), a detection module (2) and a sealing module (3). The detection module (2) and the sealing module (3) are both arranged on the base (1). The detection module (2) is used for testing the electrical properties of the electrical contact material. The sealing module (3) includes a sealing ring (31) and a sealing cover (32). The sealing ring (31) is arranged on the base (1). The detection module (2) is arranged inside the sealing ring (31). The sealing cover (32) is slidably connected to the sealing ring (31). When the sealing cover (32) blocks the opening of the sealing ring (31), the detection module (2) is in a sealed state. A plugging cover (4) is slidably connected to the sealing cover (32). The sealing ring (31) is provided with a first sealing strip (311) and a second sealing strip (312). Both the first sealing strip (311) and the second sealing strip (312) extend along the inner wall of the sealing ring (31). The sealing cover (32) is provided with a plugging block (42). When the plugging block (42) is located between the first sealing strip (311) and the second sealing strip (312), the plugging cover (4) can block the sealing ring (31). A through hole (34) is formed in the sealing ring (31). A moving bar (341) is slidably connected in the through hole (34). The moving bar (341) is located between the first sealing strip (311) and the second sealing strip (312). When the plugging block (42) is located between the first sealing strip (311) and the second sealing strip (312), the moving bar (341) protrudes from the outer wall of the sealing ring (31). An operation hole (35) communicating with the through hole (34) is formed in the sealing ring (31). An operation bar (351) is slidably connected in the operation hole (35). An air extraction hole (33) communicating with the operation hole (35) is formed in the sealing ring (31). An air extraction member (331) is arranged on the sealing ring (31). The air extraction member (331) extracts air from the inside of the sealing ring (31) through the air extraction hole (33). The air extraction hole (33) is located on the moving path of the operation bar (351). An operation groove (342) for inserting the operation bar (351) is formed in the moving bar (341). When the operation bar (351) is inserted into the operation groove (342), the moving bar (341) does not block the air extraction hole (33). When the moving bar (341) does not protrude from the outer wall of the sealing ring (31), the operation groove (342) is not on the moving path of the moving bar (341). An exhaust hole (371) is formed in the operation bar (351). An air release hole (37) communicating with the operation hole (35) is formed in the sealing ring (31). When the operation bar (351) is inserted into the operation groove (342), the operation bar (351) blocks the air release hole (37).

2. The electrical property testing device for an electrical contact material according to claim 1, wherein: The detection module (2) includes a pushing structure (21), a placing structure (22) and a mounting structure (23). The mounting structure (23) is for mounting the moving contact piece. The pushing structure (21) includes a pushing component (24) and a pushing moving component (25). The pushing component (24) is arranged on the pushing moving component (25). The pushing moving component (25) is arranged on the base (1). The pushing component (24) is used to push the moving contact piece. The pushing moving component (25) is used to drive the pushing component (24) to adjust the position. The placing structure (22) includes a placing seat (221) and a placing moving component (222). The placing seat (221) is arranged on the placing moving component (222). The placing moving component (222) is arranged on the base (1). The placing seat (221) is for placing the static contact piece. The placing moving component (222) is used to adjust the position of the static contact piece.

3. An electrical property testing device for an electrical contact material according to claim 2, characterized in that: The pushing moving component (25) includes a rotating rod (251), a fixing strip (252) and a fixing seat (253). The fixing seat (253) is arranged on the base (1). The rotating rod (251) is rotatably connected to the fixing seat (253). The fixing strip (252) is slidably arranged on the fixing seat (253). The fixing strip (252) is threadedly connected to the rotating rod (251). The pushing component (24) is arranged on the fixing strip (252). When the rotating rod (251) rotates, the rotating rod (251) drives the fixing strip (252) to approach or move away from the mounting structure (23).

4. The electrical property testing device for an electrical contact material according to claim 2, characterized in that: The mounting structure (23) includes a mounting seat (231), a mounting block (232) and a mounting bolt (233). An installation groove (234) for inserting the mounting block (232) is formed on the mounting seat (231). The mounting bolt (233) is rotatably connected to the mounting block (232). The mounting bolt (233) is threadedly connected to the mounting seat (231). When the mounting bolt (233) is threadedly connected to the mounting seat (231), the mounting block (232) is fixed to the mounting seat (231). At this time, the moving contact piece is fixed between the mounting block (232) and the wall of the installation groove (234).

5. The electrical property testing device for an electrical contact material according to claim 1, characterized in that: A locking strip (321) is rotatably connected to the sealing cover (32). A moving groove (322) for inserting the moving strip (341) is formed on the locking strip (321). When the moving strip (341) is inserted into the moving groove (322), the locking strip (321) restricts the movement of the sealing cover (32).

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