Novel cover plate terminal dynamic loading helium detection test tool

Abstract

The application discloses a novel cover plate terminal dynamic loading helium detection test tool and belongs to the field of helium detection tests. The tool comprises an adjustable clamp plate, a detection connecting assembly is installed on the adjustable clamp plate, the adjustable clamp plate comprises a bottom plate, the bottom plate is provided with adjustable first and second clamping plates, a plurality of detection holes are arranged on the first clamping plate, a plurality of limiting grooves are arranged on the second clamping plate, the first clamping plate comprises a first intermediate plate, first and second upper sliding plates are slidably arranged at the two ends of the first intermediate plate, the second clamping plate comprises a second intermediate plate, first and second lower sliding plates are slidably arranged at the two sides of the second intermediate plate, and the detection connecting assembly comprises a terminal clamping groove. The adjustable clamp plate is additionally arranged, the position of the upper and lower sliding plates can be adjusted in combination with the center distance of the terminal of a to-be-detected piece, the tool can be adapted to to-be-detected pieces of various terminal center distance specifications, the application range is wider, and the detection use requirement in different scenes can be met.

Description

Technical Field

[0001] This invention relates to the field of helium testing technology, specifically a novel dynamic loading helium testing fixture for cover plate terminals. Background Technology

[0002] As a key sealing component of electrochemical energy storage devices such as power batteries and energy storage batteries, the airtightness of the cover terminal directly determines the safety performance and cycle life of the battery. Especially in application scenarios with stringent safety requirements, such as new energy vehicles and large-scale energy storage power stations, even minor leaks at the welding or sealing points between the cover terminal and the substrate can lead to serious problems such as electrolyte leakage, moisture intrusion, and gas leakage, causing failure risks such as battery thermal runaway and capacity decay.

[0003] The dynamic loading helium testing fixture is a dedicated device for simulating working conditions and testing airtightness. It can accurately evaluate the sealing reliability of the cover plate terminals under actual service by combining helium mass spectrometry with dynamic loads such as vibration. The fixture integrates clamping and positioning, dynamic loading, vacuum chamber and helium supply components to reproduce battery bump and charging and discharging stress scenarios, providing test basis for battery safety design and quality testing.

[0004] Existing standard clamping and positioning components for testing mostly adopt a double-clamp structure. The clamps have pre-drilled holes for testing, and the cover plate is clamped between the two clamps and secured with bolts to achieve clamping and positioning. However, the clamp size of this structure is fixed and can only accommodate a single type of cover plate. In actual testing, there are many types of cover plates, and the distance between the terminals at both ends of different cover plates varies significantly. Fixed clamps are difficult to use for testing multiple cover plate models, resulting in poor tooling versatility. When changing the cover plate to be tested, it is necessary to replace it with a corresponding clamp of the same specification, making the operation process cumbersome and the testing efficiency low. Summary of the Invention

[0005] The purpose of this invention is to provide a novel dynamic loading helium detection test fixture for cover plate terminals, in order to solve the problems of existing fixed clamping plates being difficult to be compatible with the detection of multiple cover plate models and the poor versatility of the fixture.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solution: a novel cover plate terminal dynamic loading helium detection test fixture, including an adjustable clamp, on which a detection connection component is installed; The adjustable clamping plate includes a base plate, on which an adjustable first clamping plate and a second clamping plate are provided. The first clamping plate is provided with a plurality of detection holes, and the second clamping plate is provided with a plurality of limiting grooves. The first clamping plate includes a first intermediate plate, and a first upper sliding plate and a second upper sliding plate are slidably provided at both ends of the first intermediate plate. The second clamping plate includes a second intermediate plate, and a first lower sliding plate and a second lower sliding plate are slidably provided on both sides of the second intermediate plate. The detection connection component includes a terminal slot, and the terminal slot is provided with a helium injection port.

[0007] Preferably, the first upper sliding plate and the second upper sliding plate have the same structure. The first upper sliding plate is provided with a mating groove, and a sealing groove is provided outside the mating groove. A sealing ring with a matching shape is installed in the sealing groove. A detection hole is provided at the center of the mating groove. The detection hole penetrates the first upper sliding plate. The first clamping plate is also provided with several positioning pins. Both detection holes on the first clamping plate are threaded with detection ports.

[0008] Preferably, the first lower sliding plate and the second lower sliding plate have the same structure, the first lower sliding plate is provided with a limiting groove, and the second clamping plate is provided with a plurality of positioning holes.

[0009] Preferably, the first upper sliding plate and the second upper sliding plate on the first clamping plate, and the first lower sliding plate and the second lower sliding plate on the second clamping plate slide in the same way. The first upper sliding plate is provided with a sliding groove, and the first intermediate plate is provided with a connecting block at the end corresponding to the sliding groove. The connecting block slides with the sliding groove. A first telescopic assembly is provided between the connecting block and the sliding groove. The first telescopic assembly includes a spring and a telescopic rod combination. The spring is sleeved on the outside of the telescopic rod. The two ends of the spring and the telescopic rod are respectively fixedly connected to the sliding groove and the connecting block. There are four sets of the first telescopic assembly, which are respectively set at the two ends of the first intermediate plate and the second intermediate plate.

[0010] Preferably, the shape of the terminal slot is adapted to the shape of the limiting groove, a first connector is threaded onto the helium injection port, and a connecting rod is fixedly provided at the top of the terminal slot.

[0011] Preferably, the first clamping plate is provided with an adjustable pad, and a lifting groove is provided on the first clamping plate. The pad slides in the lifting groove, and an adjusting rod is provided in the lifting groove. The adjusting rod is preferably a threaded rod, and the threaded rod is threadedly engaged with the pad.

[0012] Preferably, the first clamping plate is provided with an adjusting plate, the first intermediate plate on the first clamping plate is fixed on the base plate, and the first upper sliding plate and the second upper sliding plate on both sides are each provided with an adjusting plate. The two sets of adjusting plates are respectively slidably engaged with the first lower sliding plate and the second lower sliding plate on the second clamping plate. A limiting groove is provided on the base plate below the second intermediate plate, and the second intermediate plate is slidably engaged with the limiting groove.

[0013] Preferably, it also includes a limiting component for limiting the adjustable clamping plate. The limiting component includes a mounting groove located behind the first clamping plate on the base plate. The limiting component also includes a movable plate that slides with the base plate via a sliding rod. A vertical rod is fixedly mounted on the movable plate, and a back plate is vertically mounted and fixedly mounted on the vertical rod. Inclined plates are symmetrically mounted and fixedly mounted on the back plate.

[0014] Preferably, connecting plates are also fixedly provided at both sides of the mounting groove, and a pressing assembly is provided between the two connecting plates. The pressing assembly is located between the two sets of inclined plates. The pressing assembly includes an upper pressing plate and a lower pressing plate. A second telescopic assembly is connected between the upper pressing plate and the lower pressing plate. A moving block is fixedly provided at the end of both the upper pressing plate and the lower pressing plate. The moving block slides in cooperation with the limiting groove on the connecting plate. In the initial state, the moving blocks of the upper pressing plate and the lower pressing plate are respectively attached to the upper and lower ends of the limiting groove. One end of the adjusting plate is located between the upper pressing plate and the lower pressing plate.

[0015] Preferably, the first intermediate plate is fixedly connected to the base plate, a through hole is provided at the bottom of the first intermediate plate, the bottom of the second intermediate plate is slidably fitted with the base plate, a mating block is fixedly provided at the bottom of the second intermediate plate, a bolt post is fixedly provided on the mating block, and limit pins are fixedly provided on both sides of the bolt post on the mating block. An adjusting nut is rotatably provided on the moving plate, and the other end of the adjusting plate is located on the back of the first clamping plate.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: This invention incorporates an adjustable clamp, allowing for positional adjustment of the upper and lower sliding plates based on the center distance of the terminals under test. This ensures the terminals are stably positioned within the detection area between the helium injection port and the detection hole, while maintaining a continuous seal between the terminals and the detection hole, thus improving test data accuracy from a structural perspective. Furthermore, the adjustable clamp in this embodiment is adaptable to various terminal center distance specifications, broadening its applicability and meeting testing requirements in different scenarios. Attached Figure Description

[0017] Figure 1 This is a front view of the overall structure of the test fixture of this invention; Figure 2 This is an exploded view of the test fixture of the present invention; Figure 3 This is a schematic diagram of the adjustable clamping plate structure of the present invention; Figure 4 This is a top view of the adjustable clamp of the present invention; Figure 5 This invention relates to a partial view of the adjustable clamp plate. Figure 1 ; Figure 6 This is the present invention. Figure 5 Enlarged schematic diagram of section A in the middle; Figure 7 This is a partially enlarged view of the limiting component of the present invention; Figure 8 This is a partial cross-sectional view of the adjustable clamp of the present invention. Figure 2 ; Figure 9 This is a partial cross-sectional view of the adjustable clamp of the present invention. Figure 3 ; Figure 10 This is a partial cross-sectional view of the adjustable clamp of the present invention. Figure 4 The front view; Figure 11 This is the present invention. Figure 10 Enlarged schematic diagram of part B in the middle.

[0018] Explanation of reference numerals in the attached figures: 100. Adjustable clamping plate; 200. Detection connection assembly; 300. Limiting assembly; 400. Test piece; 101. First clamping plate; 102. Second clamping plate; 103. Base plate; 104. Limiting slide groove; 10101. First intermediate plate; 10102. First upper sliding plate; 10103. Second upper sliding plate; 10104. Mating groove; 10105. Detection hole; 10106. Sealing groove; 10107. Positioning post; 10108. Lifting groove; 10109. Pad; 10110. Detection port; 10111. Adjusting plate; 10112. Connecting block; 10113. Sliding groove; 10114. First telescopic assembly; 10115. Adjusting rod; 101 16. Through hole; 10201. Second intermediate plate; 10202. First lower sliding plate; 10203. Second lower sliding plate; 10204. Limiting groove; 10205. Positioning hole; 10206. Mating block; 10207. Limiting pin; 10208. Bolt post; 201. Terminal slot; 202. Helium injection port; 203. First connector; 204. Connecting rod; 301. Mounting slot; 302. Moving plate; 303. Slide rod; 304. Back plate; 305. Inclined plate; 306. Vertical rod; 307. Upper pressure plate; 308. Lower pressure plate; 309. Second telescopic assembly; 310. Connecting plate; 311. Limiting groove; 312. Moving block; 313. Adjusting nut. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 Existing standard clamping and positioning components for testing mostly adopt a double-clamp structure. The clamps have pre-drilled holes for testing, and the cover plate is clamped between the two clamps and secured with bolts to achieve clamping and positioning. However, the clamp size of this structure is fixed and can only accommodate a single type of cover plate. In actual testing, there are many types of cover plates, and the distance between the terminals at both ends of different cover plates varies significantly. Fixed clamps are difficult to use for testing multiple cover plate models, resulting in poor tooling versatility. When changing the cover plate to be tested, it is necessary to replace it with a corresponding clamp of the same specification, making the operation process cumbersome and the testing efficiency low.

[0021] like Figure 1 As shown in the figure, this embodiment proposes a novel dynamic loading helium detection test fixture for cover plate terminals, which is used to test cover plates of different specifications. It includes an adjustable clamp 100, which is used to clamp and position the test piece 400. A test connection component 200 is installed on the adjustable clamp 100.

[0022] like Figure 2 As shown, the adjustable clamping plate 100 includes a base plate 103, on which an adjustable first clamping plate 101 and a second clamping plate 102 are provided. The first clamping plate 101 includes a first intermediate plate 10101, and a first upper sliding plate 10102 and a second upper sliding plate 10103 are slidably provided at both ends of the first intermediate plate 10101. The first upper sliding plate 10102 and the second upper sliding plate 10103 have the same structure. Taking one of them as an example, the first upper sliding plate 10102 is provided with a mating groove 10104. A sealing groove 10106 is provided outside the mating groove 10104. A sealing ring with a matching shape is installed in the sealing groove 10106. A detection hole 10105 is provided at the center of the mating groove 10104. The detection hole 10105 penetrates the first upper sliding plate 10102. The first clamping plate 101 is also provided with a plurality of positioning posts 10107.

[0023] like Figure 2 As shown, the second clamping plate 102 includes a second intermediate plate 10201. A first lower sliding plate 10202 and a second lower sliding plate 10203 are slidably provided on both sides of the second intermediate plate 10201. The first lower sliding plate 10202 and the second lower sliding plate 10203 have the same structure. Taking the first lower sliding plate 10202 as an example, the first lower sliding plate 10202 is provided with a limiting groove 10204, and the second clamping plate 102 is provided with a plurality of positioning holes 10205.

[0024] In this embodiment, the sliding methods of the first upper sliding plate 10102 and the second upper sliding plate 10103 on the first clamping plate 101, and the first lower sliding plate 10202 and the second lower sliding plate 10203 on the second clamping plate 102 are the same. Specifically, taking the first intermediate plate 10101 and the first upper sliding plate 10102 as examples, the first upper sliding plate 10102 is provided with a sliding groove 10113, and the first intermediate plate 10101 is provided with a connecting block 10112 at the end corresponding to the sliding groove 10113. The connecting block 10112... 12 slides in conjunction with the sliding groove 10113. A first telescopic component 10114 is provided between the connecting block 10112 and the sliding groove 10113. The first telescopic component 10114 includes a spring and a telescopic rod combination. The spring is sleeved on the outside of the telescopic rod. The two ends of the spring and the telescopic rod are respectively fixedly connected to the sliding groove 10113 and the connecting block 10112. In this embodiment, there are four sets of the first telescopic component 10114, which are respectively set at both ends of the first intermediate plate 10101 and the second intermediate plate 10201.

[0025] like Figure 2 and Figure 3 As shown, the detection connection assembly 200 includes a terminal slot 201, the shape of which is adapted to the shape of the limiting groove 10204. The terminal slot 201 is provided with a helium injection port 202, and a first connector 203 is threadedly connected to the helium injection port 202. A connecting rod 204 is fixedly provided at the top of the terminal slot 201. Both detection holes 10105 on the first clamping plate 101 are threadedly connected with detection ports 10110.

[0026] The working principle of the adjustable clamp 100: Figure 2 and Figure 3 As shown, during use, the sealing ring is embedded in the sealing groove 10106, and the test piece 400 is placed between the first clamping plate 101 and the second clamping plate 102 and fixed. The positions of the first upper sliding plate 10102, the second upper sliding plate 10103, the first lower sliding plate 10202, and the second lower sliding plate 10203 are adjusted according to the positions of the two terminals on the test piece 400, so that the terminals on the test piece 400 are all located between the mating groove 10104 and the limiting groove 10204. Then, the test connection assembly 200 is... Terminal slot 201 is rigidly coupled to limiting groove 10204. The first connector 203 on the detection connection assembly 200 is connected to the helium detection equipment. The test piece 400 is tightly fitted with the sealing ring in the sealing groove 10106 to form a cavity seal. The adjustable clamp 100 is fixed on the loading mechanism. The loading mechanism drives the terminal to reciprocate while continuously injecting helium. By relying on the combination of vacuum chamber and helium mass spectrometer, the micro-leakage signal of the terminal under dynamic load can be captured in real time, realizing millisecond-level response and timestamp marking of the airtightness deterioration process.

[0027] It should be emphasized that the core improvement of this embodiment lies in the addition of an adjustable clamping plate 100. This adjustable clamping plate, combined with the center distance of the terminals of the test piece 400, allows for positional adjustment of the upper and lower sliding plates. On one hand, it stably positions the terminals within the intermediate detection area between the helium injection port 202 and the detection hole 10105. On the other hand, it ensures a continuous seal between the terminals and the detection hole 10105, thus improving the accuracy of test data from a structural perspective. Furthermore, the adjustable clamping plate 100 in this embodiment can accommodate test pieces 400 with various terminal center distance specifications, broadening its applicability and meeting the testing requirements in different scenarios.

[0028] It should be noted that, such as Figure 3 As shown, since the first clamping plate 101 and the second clamping plate 102 are initially separated, when fixing the workpiece 400, it is necessary to manually press the workpiece 400 against the first clamping plate 101 and then move the second clamping plate 102 to fix and position the workpiece 400. However, during the clamping process, the operator's hand will interfere with the second clamping plate 102, and the workpiece 400 may shift or fall if the fingers loosen. The clamping and fixing of the workpiece 400 is inconvenient. Therefore, this embodiment also provides an adjustable pad 10109 on the first clamping plate 101. The holding plate 101 is provided with a lifting groove 10108, and the pad 10109 slides within the lifting groove 10108. An adjusting rod 10115 is also provided within the lifting groove 10108. The adjusting rod 10115 is preferably a threaded rod, which is threadedly engaged with the pad 10109. Rotating the adjusting rod 10115 raises or lowers the pad 10109, thus lifting the bottom of the workpiece 400 to be tested. This allows for adjustments to the bottom of the workpiece 400 according to its dimensions. Furthermore, during the fixing process, it eliminates the need for continuous manual pressing of the workpiece 400 onto the first clamping plate 101, preventing interference between the hand and the second clamping plate 102. 。

[0029] Example 2 It is understandable that in the clamping structure of Embodiment 1, to achieve precise alignment between the first clamping plate 101, the second clamping plate 102, and the terminal of the test piece 400, the adjustment distances of the upper and lower sliding plates must be the same. In actual use, the position of the upper sliding plate of the first clamping plate 101 must be adjusted first, and then the lower sliding plate of the second clamping plate 102 must be adjusted to align the upper and lower sliding plates with the terminals on both sides. The overall adjustment process is complex and the user experience is poor.

[0030] like Figure 3As shown, in order to solve the above problems, this embodiment provides an adjusting plate 10111 on the first clamping plate 101. The first intermediate plate 10101 on the first clamping plate 101 is fixed on the base plate 103. Adjusting plates 10111 are fixed on the first upper sliding plate 10102 and the second upper sliding plate 10103 on both sides. The two sets of adjusting plates 10111 are slidably engaged with the first lower sliding plate 10202 and the second lower sliding plate 10203 on the second clamping plate 102, respectively. A limiting groove 104 is provided on the base plate 103 below the second intermediate plate 10201. The second intermediate plate 10201 is slidably engaged with the limiting groove 104.

[0031] The working principle of the regulating plate 10111: Figure 3 As shown, during use, after the adjustment of the upper sliding plate of the first clamping plate 101 is completed, the two sets of upper sliding plates will drive the lower sliding plate on the second clamping plate 102 to move synchronously under the action of the adjusting plate 10111, thereby realizing the adjustment of the second clamping plate 102. After the workpiece 400 to be tested is placed on the pad 10109, pushing the second intermediate plate 10201 can realize the engagement of the positioning post 10107 on the first clamping plate 101 and the positioning hole 10205 on the second clamping plate 102. Finally, the clamping and positioning of the workpiece 400 by the first clamping plate 101 and the second clamping plate 102 is realized by the positioning bolt.

[0032] It should be emphasized that the core improvement of this embodiment lies in the following: the present invention is configured with two sets of adjusting plates 10111. The first upper sliding plate 10102 and the first lower sliding plate 10202 are slidably assembled and can be synchronously linked. Similarly, the second upper sliding plate 10103 and the second lower sliding plate 10203 are slidably connected and move synchronously. When adjusting the upper sliding plate of the first clamping plate 101, the lower sliding plate can be synchronously adjusted in position. After the adjustment is completed, the lower sliding plate can still slide along the adjusting plate 10111 to complete the alignment and engagement of the first clamping plate 101 and the second clamping plate 102, without the need for separate adjustment of the two clamping plates step by step. In addition, the second clamping plate 102 is slidably connected to the first clamping plate 101, and the two will not separate from each other, which can avoid the problem of loss when the parts are placed separately.

[0033] Example 3 It is understandable that in Embodiment 2, since the test fixture needs to be dynamically loaded, after the upper sliding plate and lower sliding plate on the first clamping plate 101 and the second clamping plate 102 in this embodiment have completed the position adjustment, the upper sliding plate needs to be fixed to the first intermediate plate 10101 and the lower sliding plate needs to be fixed to the second intermediate plate 10201 to prevent the upper sliding plate and lower sliding plate from moving and continuously impacting the terminals on the test piece 400 under vibration conditions, which would affect the accuracy of the test data.

[0034] like Figure 1As shown, to solve the above problems, this embodiment also includes a limiting component 300 to limit the adjustable clamp 100, such as... Figure 5 As shown, the limiting component 300 includes a mounting groove 301 located behind the first clamping plate 101 on the base plate 103. The limiting component 300 also includes a movable plate 302, which slides against the base plate 103 via a slide rod 303. A vertical rod 306 is fixedly mounted on the movable plate 302, and a back plate 304 is vertically and fixedly mounted on the vertical rod 306. Figure 6 As shown, inclined plates 305 are symmetrically and fixedly provided on the back plate 304.

[0035] like Figure 6 and 7 As shown, connecting plates 310 are fixedly provided on both sides of the mounting groove 301. A pressing assembly is provided between the two connecting plates 310. The pressing assembly is located between the two sets of inclined plates 305. The pressing assembly includes an upper pressing plate 307 and a lower pressing plate 308. A second telescopic assembly 309 is connected between the upper pressing plate 307 and the lower pressing plate 308. The second telescopic assembly 309 includes, but is not limited to, a combination of spring and limiting rod. Moving blocks 312 are fixedly provided at the ends of the upper pressing plate 307 and the lower pressing plate 308. The moving blocks 312 slide in cooperation with the limiting grooves 311 on the connecting plate 310. In the initial state, the moving blocks 312 of the upper pressing plate 307 and the lower pressing plate 308 are respectively in contact with the upper and lower ends of the limiting grooves 311. Figure 11 As shown, one end of the adjusting plate 10111 is located between the upper pressure plate 307 and the lower pressure plate 308.

[0036] like Figure 8 As shown, the first intermediate plate 10101 is fixedly connected to the base plate 103, and a through hole 10116 is provided at the bottom of the first intermediate plate 10101, as shown. Figure 9 As shown, the bottom of the second intermediate plate 10201 is slidably fitted with the bottom plate 103. A mating block 10206 is fixedly provided at the bottom of the second intermediate plate 10201, and a bolt post 10208 is fixedly provided on the mating block 10206. Limiting pins 10207 are fixedly provided on both sides of the bolt post 10208 on the mating block 10206. An adjusting nut 313 is rotatably provided on the moving plate 302. The other end of the adjusting plate 10111 is located on the back of the first clamping plate 101.

[0037] Working principle of limit component 300: Figure 7 and Figure 10As shown, during use, the first clamping plate 101 and the second clamping plate 102 clamp the workpiece 400 to be tested. The bolt post 10208 and the limiting pin 10207 on the second clamping plate 102 are respectively inserted into the through hole 10116 on the first clamping plate 101. Then, the moving plate 302 is pushed towards the first clamping plate 101. The bolt post 10208 on the second clamping plate 102 will pass through the first clamping plate 101 and be located in front of the moving plate 302. As the moving plate 302 moves, the adjusting nut 313 on the moving plate 302 will gradually be fitted onto the bolt post 10208. Manually adjusting and rotating the adjusting nut 313 can tighten the adjusting nut 313 onto the bolt post 10208, ultimately limiting the first clamping plate 101 and the second clamping plate 102. The workpiece 400 to be tested is then tightly clamped between the first clamping plate 101 and the second clamping plate 102. Figure 11 As shown, as the moving plate 302 moves, the two sets of inclined plates 305 on the moving plate 302 move synchronously. The two sets of inclined plates 305 gradually come into contact with the upper pressure plate 307 and the lower pressure plate 308 and squeeze them, so that the upper pressure plate 307 and the lower pressure plate 308 move closer to the middle adjusting plate 10111 and gradually squeeze and clamp the adjusting plate 10111 at the upper and lower ends, so that the adjusting plate 10111 is fixed inside the upper pressure plate 307 and the lower pressure plate 308 and cannot move. This achieves the fixation of the upper sliding plate relative to the first intermediate plate 10101 and the lower sliding plate relative to the second intermediate plate 10201, and finally achieves the overall fixation of the first clamping plate 101 and the second clamping plate 102.

[0038] It should be emphasized that the core improvement of this embodiment lies in the following: This embodiment is equipped with a limiting component 300. This component can lock and fix the two clamping plates 101 and 102 after clamping the workpiece 400. Simultaneously, the upper pressure plate 307 and lower pressure plate 308 of the limiting component 300 can be used to press and lock the two sets of adjusting plates 10111, completing the positioning of the two sets of upper sliding plates and keeping the adjusted distance between the upper sliding plates and the first intermediate plate 10101 constant. Under the linkage constraint of the upper sliding plates and the adjusting plates 10111, the distance between the two sets of lower sliding plates and the second intermediate plate 10201 also remains unchanged, thereby achieving overall locking and fixation of the adjustable clamping plate 100. This structure can prevent the loosening and displacement of various components under equipment vibration conditions, and stably complete the limiting constraint of the workpiece 400. The limiting component 300 in this embodiment has a simple structure. Operators only need to tighten the adjusting nut 313 to clamp and fix the test parts 400 of different thicknesses. The component has a simple overall structure and complete clamping and locking functions. The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A novel dynamic loading helium detection testing fixture for cover plate terminals, characterized in that, Includes an adjustable clamp (100), on which a detection connection assembly (200) is mounted; The adjustable clamping plate (100) includes a base plate (103), on which an adjustable first clamping plate (101) and a second clamping plate (102) are provided. The first clamping plate (101) is provided with a plurality of detection holes (10105), and the second clamping plate (102) is provided with a plurality of limiting grooves (10204). The first clamping plate (101) includes a first intermediate plate (10101), and a first upper sliding plate (10102) and a second upper sliding plate (10103) are slidably provided at both ends of the first intermediate plate (10101). The second clamping plate (102) includes a second intermediate plate (10201), and a first lower sliding plate (10202) and a second lower sliding plate (10203) are slidably provided on both sides of the second intermediate plate (10201). The detection connection assembly (200) includes a terminal slot (201) and a helium injection port (202) on the terminal slot (201).

2. The novel cover plate terminal dynamic loading helium detection test fixture as described in claim 1, characterized in that, The first upper sliding plate (10102) and the second upper sliding plate (10103) have the same structure. The first upper sliding plate (10102) is provided with a mating groove (10104). A sealing groove (10106) is provided outside the mating groove (10104). A sealing ring that matches its shape is installed in the sealing groove (10106). A detection hole (10105) is provided at the center of the mating groove (10104). The detection hole (10105) passes through the first upper sliding plate (10102). The first clamping plate (101) is also provided with several positioning posts (10107). Both detection holes (10105) on the first clamping plate (101) are threaded with detection ports (10110).

3. The novel cover plate terminal dynamic loading helium detection test fixture as described in claim 1, characterized in that, The first lower sliding plate (10202) and the second lower sliding plate (10203) have the same structure. The first lower sliding plate (10202) is provided with a limiting groove (10204), and the second clamping plate (102) is provided with a plurality of positioning holes (10205).

4. The novel cover plate terminal dynamic loading helium detection test fixture as described in claim 1, characterized in that, The first upper sliding plate (10102) and the second upper sliding plate (10103) on the first clamping plate (101), and the first lower sliding plate (10202) and the second lower sliding plate (10203) on the second clamping plate (102) slide in the same way. The first upper sliding plate (10102) is provided with a sliding groove (10113). The first intermediate plate (10101) is provided with a connecting block (10112) at the end corresponding to the sliding groove (10113). The connecting block (10112) and the sliding groove (10113) are connected in the same way. 3) Sliding fit, a first telescopic component (10114) is provided between the connecting block (10112) and the sliding groove (10113). The first telescopic component (10114) includes a spring and telescopic rod combination. The spring is sleeved on the outside of the telescopic rod. The two ends of the spring and the telescopic rod are respectively fixedly connected to the sliding groove (10113) and the connecting block (10112). There are four sets of the first telescopic component (10114), which are respectively set at both ends of the first intermediate plate (10101) and the second intermediate plate (10201).

5. The novel cover plate terminal dynamic loading helium detection test fixture as described in claim 1, characterized in that, The shape of the terminal slot (201) is adapted to the shape of the limiting groove (10204), and the helium injection port (202) is threaded with a first connector (203). A connecting rod (204) is fixedly provided at the top of the terminal slot (201).

6. The novel cover plate terminal dynamic loading helium detection test fixture as described in claim 1, characterized in that, The first clamping plate (101) is provided with an adjustable pad (10109). The first clamping plate (101) is provided with a lifting groove (10108). The pad (10109) slides in the lifting groove (10108). An adjusting rod (10115) is provided in the lifting groove (10108). The adjusting rod (10115) is preferably a threaded rod, and the threaded rod is threadedly engaged with the pad (10109).

7. The novel cover plate terminal dynamic loading helium detection test fixture as described in claim 1, characterized in that, The first clamping plate (101) is provided with an adjustment plate (10111). The first intermediate plate (10101) on the first clamping plate (101) is fixed on the base plate (103). The first upper sliding plate (10102) and the second upper sliding plate (10103) on both sides are each provided with an adjustment plate (10111). The two sets of adjustment plates (10111) are respectively slidably engaged with the first lower sliding plate (10202) and the second lower sliding plate (10203) on the second clamping plate (102). A limiting groove (104) is provided on the base plate (103) below the second intermediate plate (10201). The second intermediate plate (10201) is slidably engaged with the limiting groove (104).

8. The novel cover plate terminal dynamic loading helium detection test fixture as described in claim 7, characterized in that, It also includes a limiting component (300) for limiting the adjustable clamping plate (100). The limiting component (300) includes a mounting groove (301) located behind the first clamping plate (101) on the base plate (103). The limiting component (300) also includes a moving plate (302) which slides with the base plate (103) via a slide rod (303). A vertical rod (306) is fixedly provided on the moving plate (302). A back plate (304) is vertically and fixedly provided on the vertical rod (306). An inclined plate (305) is symmetrically and fixedly provided on the back plate (304).

9. The novel cover plate terminal dynamic loading helium detection test fixture as described in claim 8, characterized in that, A connecting plate (310) is fixedly provided at both sides of the mounting groove (301). A pressing assembly is provided between the two connecting plates (310). The pressing assembly is located between two sets of inclined plates (305). The pressing assembly includes an upper pressing plate (307) and a lower pressing plate (308). A second telescopic assembly (309) is connected between the upper pressing plate (307) and the lower pressing plate (308). A moving block (312) is fixedly provided at the ends of the upper pressing plate (307) and the lower pressing plate (308). The moving block (312) slides with the limiting groove (311) on the connecting plate (310). In the initial state, the moving block (312) of the upper pressing plate (307) and the lower pressing plate (308) are respectively attached to the upper and lower ends of the limiting groove (311). One end of the adjusting plate (10111) is located between the upper pressing plate (307) and the lower pressing plate (308).

10. The novel cover plate terminal dynamic loading helium detection test fixture as described in claim 9, characterized in that, The first intermediate plate (10101) is fixedly connected to the base plate (103). A through hole (10116) is provided at the bottom of the first intermediate plate (10101). The bottom of the second intermediate plate (10201) is slidably engaged with the base plate (103). A mating block (10206) is fixedly provided at the bottom of the second intermediate plate (10201). A bolt post (10208) is fixedly provided on the mating block (10206). Limiting pins (10207) are fixedly provided on both sides of the bolt post (10208) on the mating block (10206). An adjusting nut (313) is rotatably provided on the moving plate (302). The other end of the adjusting plate (10111) is located on the back of the first clamping plate (101).

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