A quality detection device for nitrogen spring
By designing clamping and fixing mechanisms that adapt to different types of nitrogen springs, the problem of low applicability of traditional detection devices is solved, detection efficiency is improved, nitrogen springs are protected, and stable detection and leakage detection are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DAKE (GUANGDONG) PRECISION TECH CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-06-09
AI Technical Summary
Traditional nitrogen spring quality inspection devices cannot adapt to different models of nitrogen springs, requiring the replacement of clamping components, resulting in low inspection efficiency.
A detection device including a clamping mechanism and a fixing mechanism was designed. The clamping mechanism consists of a servo motor, a bidirectional lead screw, a moving column, and a clamping block, which can adjust the distance and height of the clamping block. The fixing mechanism fixes the clamping block through a sliding plate, a pad, a knob, and a screw, and works in conjunction with an infrared thermal imager to detect air leakage.
It enables flexible clamping and stable testing of nitrogen springs of different models, improves testing efficiency, protects the surface of nitrogen springs from damage, and can detect leaks in a timely manner.
Smart Images

Figure CN224341142U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of nitrogen spring quality testing technology, and in particular relates to a quality testing device for nitrogen springs. Background Technology
[0002] Nitrogen springs come in various structural forms depending on the application scenario. For example, support-type nitrogen springs have advantages such as small size, large elastic force, long stroke, stable operation, fine manufacturing, gentle elasticity curve, and long service life. They can be used as a power source to provide continuous and stable reaction force. Nitrogen springs need to undergo quality inspection after production.
[0003] The problem with the above technology is that when using a quality inspection device to inspect nitrogen springs, the nitrogen springs are fixed in place to prevent them from popping out during pressure testing. However, traditional clamping devices cannot be used to clamp different models of nitrogen springs, resulting in low applicability. It is necessary to replace the corresponding clamping devices, which complicates the operation and reduces the inspection efficiency. Utility Model Content
[0004] In view of the problems existing in the prior art, this utility model provides a quality detection device for nitrogen springs that can overcome or at least partially solve the above problems.
[0005] This utility model is implemented as follows: a quality inspection device for nitrogen springs includes an inspection platform, a main control screen fixedly connected to the front side of the inspection platform, a first sliding groove opened on the top of the inspection platform, a support plate and a tray fixedly connected to the top of the inspection platform, a hydraulic cylinder fixedly connected to the inner wall of the support plate, a pressure detector fixedly connected to the telescopic end of the hydraulic cylinder, a clamping mechanism provided inside the first sliding groove, and a fixing mechanism provided on one side of the clamping mechanism.
[0006] To accommodate different types of nitrogen springs, the clamping mechanism preferably includes a servo motor, a bidirectional lead screw, a moving column, a moving block, and a clamping block. The output end of the servo motor passes through one side of the testing platform and is fixedly connected to one end of the bidirectional lead screw. One end of the bidirectional lead screw passes through the moving column and is rotatably connected to the inner wall of the first sliding groove via a bearing. The surface of the bidirectional lead screw is threadedly connected to the inner wall of the moving column. One end of the clamping block is fixedly connected to the moving block. The servo motor is started via the main control screen, and the servo motor drives the two moving columns to move closer or further apart via the bidirectional lead screw. The distance between the clamping blocks can be controlled by the moving column, thus achieving the purpose of the clamping mechanism adapting to different types of nitrogen springs.
[0007] In order to enable the clamping block to clamp nitrogen springs at different heights, preferably, a second sliding groove is provided on one side of the moving column, and the side of the moving block away from the clamping block extends into the interior of the second sliding groove and slides in connection with the inner wall of the second sliding groove. Through the cooperation of the second sliding groove and the moving block, the clamping block can move up and down on one side of the moving column, thereby achieving the purpose of enabling the clamping block to clamp nitrogen springs at different heights.
[0008] To ensure the stability of the nitrogen spring during testing, preferably, a first anti-slip pad and a second anti-slip pad are fixedly connected to one side of the clamping block and the top of the tray, respectively. The first and second anti-slip pads not only effectively stabilize the nitrogen spring during testing, but also protect the surface of the nitrogen spring from damage.
[0009] To ensure the clamping block can be fixed after height adjustment, the fixing mechanism preferably includes a sliding plate, a pad, a knob, a support block, and a screw. One end of the sliding plate is fixedly connected to the pad, one side of the pad is slidably connected to the moving column, the top of the pad is fixedly connected to the support block, one side of the knob is fixedly connected to the screw, and the screw is threaded to the inner wall of the moving block. The sliding plate is used to connect the fixing mechanism to the moving column, and the pad and support block are used to support the screw.
[0010] To ensure the fixing mechanism can follow the clamping block at the same height, preferably, a T-shaped groove is provided on the other side of the moving column, and a threaded hole for cooperating with the screw is provided on the front side of the moving column. The other end of the sliding plate extends into the interior of the T-shaped groove and slides in connection with the inner wall of the T-shaped groove. One end of the screw extends through the threaded hole to the inner wall of the second groove and passes through the moving block. The surface of the screw is threadedly connected to the inner wall of the moving block. The fixing mechanism can follow the clamping block at the same height through the cooperation of the sliding plate and the T-shaped groove. By rotating the knob, the screw enters the inner wall of the moving column through the threaded hole and then is threadedly connected to the moving block, thereby fixing the moving block.
[0011] To promptly detect any leaks in the nitrogen spring, preferably, a connecting block is fixedly connected to the top of the testing platform, and an infrared thermal imager is fixedly connected to one side of the connecting block. The infrared thermal imager, servo motor, and pressure detector are all connected to the main control screen. If the nitrogen spring leaks, the infrared thermal imager will detect the low temperature of the nitrogen and display it on the quality control screen.
[0012] This invention solves the problems of traditional clamping devices being unable to clamp different types of nitrogen springs, having low applicability, requiring the replacement of corresponding clamping devices, complicated operation, and reduced detection efficiency by setting up a clamping mechanism and a fixing mechanism. The clamping mechanism allows the nitrogen spring detection device to adapt to different models of nitrogen springs, and the fixing mechanism allows the clamping block to be fixed after the height is adjusted. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural schematic diagram provided in an embodiment of the present utility model;
[0014] Figure 2 This is a schematic diagram of the clamping mechanism provided in an embodiment of the present invention;
[0015] Figure 3 This is a schematic diagram of the fixing mechanism provided in an embodiment of the present utility model;
[0016] Figure 4 This is provided by the embodiment of the present utility model. Figure 2 Enlarged diagram of point A in the middle.
[0017] In the diagram: 1. Testing table; 2. Main control screen; 3. Clamping mechanism; 301. Servo motor; 302. Bidirectional lead screw; 303. Moving column; 304. Moving block; 305. Clamping block; 4. Fixing mechanism; 401. Slide plate; 402. Pad; 403. Knob; 404. Support block; 405. Screw; 5. Support plate; 6. Hydraulic cylinder; 7. Pressure detector; 8. Connecting block; 9. Infrared thermal imager; 10. Second anti-slip pad; 11. Tray; 12. First anti-slip pad; 13. T-shaped slide; 14. Second slide; 15. First slide. Detailed Implementation
[0018] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.
[0019] The structure of this utility model will now be described in detail with reference to the accompanying drawings.
[0020] like Figures 1 to 4 As shown in the figure, a quality inspection device for nitrogen springs provided in this utility model embodiment includes an inspection table 1. A main control screen 2 is fixedly connected to the front side of the inspection table 1. A first slide groove 15 is opened on the top of the inspection table 1. A support plate 5 and a tray 11 are fixedly connected to the top of the inspection table 1. A hydraulic cylinder 6 is fixedly connected to the inner wall of the support plate 5. A pressure detector 7 is fixedly connected to the telescopic end of the hydraulic cylinder 6. A clamping mechanism 3 is provided inside the first slide groove 15. A fixing mechanism 4 is provided on one side of the clamping mechanism 3.
[0021] To accommodate different types of nitrogen springs, the clamping mechanism 3 includes a servo motor 301, a bidirectional lead screw 302, a moving column 303, a moving block 304, and a clamping block 305. The output end of the servo motor 301 passes through one side of the testing table 1 and is fixedly connected to one end of the bidirectional lead screw 302. One end of the bidirectional lead screw 302 passes through the moving column 303 and is rotatably connected to the inner wall of the first slide groove 15 through a bearing. The surface of the bidirectional lead screw 302 is threadedly connected to the inner wall of the moving column 303. One end of the clamping block 305 is fixedly connected to the moving block 304. The servo motor 301 is started through the main control screen 2. The servo motor 301 drives the two moving columns 303 to move closer or further apart through the bidirectional lead screw 302. The distance between the clamping blocks 305 can be controlled by the moving column 303, thus achieving the purpose of the clamping mechanism 3 to accommodate different types of nitrogen springs.
[0022] In order to enable the clamping block 305 to clamp nitrogen springs of different heights, a second slide groove 14 is provided on one side of the moving column 303. The side of the moving block 304 away from the clamping block 305 extends into the interior of the second slide groove 14 and slides in connection with the inner wall of the second slide groove 14. Through the cooperation of the second slide groove 14 and the moving block 304, the clamping block 305 can move up and down on one side of the moving column 303, thereby achieving the purpose of enabling the clamping block 305 to clamp nitrogen springs of different heights.
[0023] In order to stabilize the nitrogen spring during testing, a first anti-slip pad 12 and a second anti-slip pad 10 are fixedly connected to one side of the clamping block 305 and the top of the tray 11, respectively. The setting of the first anti-slip pad 12 and the second anti-slip pad 10 not only effectively stabilizes the nitrogen spring during testing, but also protects the surface of the nitrogen spring from damage.
[0024] To ensure that the clamping block 305 can be fixed after height adjustment, the fixing mechanism 4 includes a sliding plate 401, a pad 402, a knob 403, a support block 404, and a screw 405. One end of the sliding plate 401 is fixedly connected to the pad 402, one side of the pad 402 is slidably connected to the moving column 303, the top of the pad 402 is fixedly connected to the support block 404, one side of the knob 403 is fixedly connected to the screw 405, and the screw 405 is threadedly connected to the inner wall of the moving block 304. The sliding plate 401 is used to connect the fixing mechanism 4 to the moving column 303, and the pad 402 and the support block 404 are used to support the screw 405.
[0025] To enable the fixing mechanism 4 to follow the clamping block 305 at the same height, a T-shaped groove 13 is provided on the other side of the moving column 303. A threaded hole for use with the screw 405 is provided on the front side of the moving column 303. The other end of the sliding plate 401 extends into the interior of the T-shaped groove 13 and slides in connection with the inner wall of the T-shaped groove 13. One end of the screw 405 extends through the threaded hole to the inner wall of the second groove 14 and passes through the moving block 304. The surface of the screw 405 is threadedly connected to the inner wall of the moving block 304. The fixing mechanism 4 can follow the clamping block 305 at the same height by the cooperation of the sliding plate 401 and the T-shaped groove. By rotating the knob 403, the knob 403 causes the screw 405 to enter the inner wall of the moving column 303 through the threaded hole and then threadedly connect with the moving block 304, thereby fixing the moving block 304.
[0026] In order to detect whether the nitrogen spring is leaking in time, a connecting block 8 is fixedly connected to the top of the testing platform 1. An infrared thermal imager 9 is fixedly connected to one side of the connecting block 8. The infrared thermal imager 9, the servo motor 301 and the pressure detector 7 are all connected to the main control screen 2. If the nitrogen spring is leaking, the infrared thermal imager 9 will detect the low temperature of the nitrogen and display it on the quality control screen.
[0027] In use, the nitrogen spring is placed on the second anti-slip pad 10 on top of the tray 11. Then, the servo motor 301 is started via the main control screen 2. The servo motor 301 drives the two moving columns 303 to move closer or further apart via the bidirectional lead screw 302. The distance between the clamping blocks 305 can be controlled by the moving columns 303, thus achieving the purpose of the clamping mechanism 3 adapting to different types of nitrogen springs. For different types of nitrogen springs, not only are their diameters different, but their heights are also different. At this time, the height of the clamping block 305 is adjusted according to the height of the detected nitrogen spring, through the second slide groove 14 and the moving block 304. The clamping block 305 can move up and down on one side of the moving column 303, and the height of the clamping block 305 can be adjusted. After adjustment, the fixing mechanism 4 can follow the clamping block 305 to the same height through the cooperation of the sliding plate 401 and the T-shaped sliding groove. By rotating the knob 403, the screw 405 enters the inner wall of the moving column 303 through the threaded hole and then connects with the moving block 304 by thread, thereby fixing the moving block 304 and fixing the clamping block 305. If the nitrogen spring leaks during the test, the infrared thermal imager 9 will detect the low temperature of the nitrogen and display it on the quality control screen.
Claims
1. A quality testing device for nitrogen springs, comprising a testing platform (1), characterized in that: The front side of the testing platform (1) is fixedly connected to the main control screen (2). The top of the testing platform (1) is provided with a first slide groove (15). The top of the testing platform (1) is fixedly connected to a support plate (5) and a tray (11). The inner wall of the support plate (5) is fixedly connected to a hydraulic cylinder (6). The telescopic end of the hydraulic cylinder (6) is fixedly connected to a pressure detector (7). The first slide groove (15) is provided with a clamping mechanism (3). The clamping mechanism (3) includes a servo motor (301), a two-way lead screw (302), a moving column (303), a moving block (304), and a clamping block (305). A fixing mechanism (4) is provided on one side of the clamping mechanism (3). The top of the testing platform (1) is fixedly connected to a connecting block (8). The side of the connecting block (8) is fixedly connected to an infrared thermal imager (9). The infrared thermal imager (9), the servo motor (301), and the pressure detector (7) are all connected to the main control screen (2) via signals.
2. The quality detection device for nitrogen springs as described in claim 1, characterized in that: The output end of the servo motor (301) passes through one side of the detection table (1) and is fixedly connected to one end of the bidirectional lead screw (302). One end of the bidirectional lead screw (302) passes through the moving column (303) and is rotatably connected to the inner wall of the first slide groove (15) through a bearing. The surface of the bidirectional lead screw (302) is threadedly connected to the inner wall of the moving column (303). One end of the clamping block (305) is fixedly connected to the moving block (304).
3. The quality detection device for nitrogen springs as described in claim 2, characterized in that: A second groove (14) is provided on one side of the movable column (303), and the movable block (304) extends into the interior of the second groove (14) on the side away from the clamping block (305) and slides in connection with the inner wall of the second groove (14).
4. The quality detection device for nitrogen springs as described in claim 2, characterized in that: The clamping block (305) and the top of the tray (11) are respectively fixedly connected with a first anti-slip pad (12) and a second anti-slip pad (10).
5. The quality detection device for nitrogen springs as described in claim 1, characterized in that: The fixing mechanism (4) includes a sliding plate (401), a pad (402), a knob (403), a support block (404), and a screw (405). One end of the sliding plate (401) is fixedly connected to the pad (402), one side of the pad (402) is slidably connected to the moving column (303), the top of the pad (402) is fixedly connected to the support block (404), one side of the knob (403) is fixedly connected to the screw (405), and the screw (405) is threadedly connected to the inner wall of the moving block (304).
6. The quality detection device for nitrogen springs as described in claim 5, characterized in that: A T-shaped groove (13) is provided on the other side of the movable column (303). A threaded hole for use with the screw (405) is provided on the front side of the movable column (303). The other end of the sliding plate (401) extends into the interior of the T-shaped groove (13) and slides in connection with the inner wall of the T-shaped groove (13). One end of the screw (405) extends through the threaded hole to the inner wall of the second groove (14) and passes through the movable block (304). The surface of the screw (405) is threadedly connected to the inner wall of the movable block (304).