CN113984290A - Double-opening automobile shock absorber airtightness detection device and detection method thereof - Google Patents
Double-opening automobile shock absorber airtightness detection device and detection method thereof Download PDFInfo
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- CN113984290A CN113984290A CN202111283151.9A CN202111283151A CN113984290A CN 113984290 A CN113984290 A CN 113984290A CN 202111283151 A CN202111283151 A CN 202111283151A CN 113984290 A CN113984290 A CN 113984290A
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 105
- 230000035939 shock Effects 0.000 title claims abstract description 105
- 238000001514 detection method Methods 0.000 title claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The double-opening automobile shock absorber airtightness detection device comprises a water tank, wherein a driving cylinder and a sliding frame are arranged on a mounting frame of the water tank, the sliding frame and a guide rod on the mounting frame form a sliding pair capable of moving up and down, and a piston rod of the driving cylinder is directly connected with the sliding frame; a barrel positioning block A and an air cylinder A are arranged on the sliding frame, two parallel guide rods are arranged on the sliding frame, and the guide rods and the sliding frame form a sliding pair; one end of the guide rod is fixed with a guide rod adjusting device; the other end of the cylinder is fixed with a cylinder mounting rack, and a cylinder positioning block B and a cylinder B are arranged on the cylinder mounting rack; the tail end of the cylinder is connected with a sealing top head; the sealed top head A is internally provided with a vent hole which is connected with a supercharging device. The double-opening automobile shock absorber airtightness detection device provided by the invention can be used for efficiently detecting the airtightness of an automobile shock absorber, is easy to operate, has low production cost and is easy to popularize in enterprises; in addition, the invention also provides a double-opening automobile shock absorber airtightness detection method.
Description
Technical Field
The invention relates to an air tightness detection technology, in particular to a double-opening automobile shock absorber air tightness detection device and a detection method thereof.
Background
The automobile shock absorber is internally stored with hydraulic oil, the automobile shock absorber can only be ensured to normally work by having good air tightness, generally speaking, a workpiece welding part is easy to leak, the automobile shock absorber is provided with three welding parts which are a base of the automobile shock absorber, an electromagnetic valve connecting pipe and an air bag connecting pipe, and in order to detect the air tightness of the three welding parts, two openings of the automobile shock absorber need to be sealed firstly; in the prior art, patent No. CN202120250741.0 discloses an air tightness detecting device for a liquid storage cylinder of a shock absorber of an automobile, which can only detect the air tightness of a workpiece with one opening, but cannot detect the air tightness of a workpiece with two openings. Therefore, for an automobile shock absorber workpiece with two openings, it is urgently needed to develop a device capable of detecting the air tightness of the automobile shock absorber workpiece.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the double-opening automobile shock absorber airtightness detection device, which can be used for efficiently detecting the airtightness of the double-opening automobile shock absorber, is easy to operate, low in production cost and easy to popularize in enterprises; correspondingly, the invention also provides a double-opening automobile shock absorber airtightness detection method which has the advantages of easiness in implementation and high detection efficiency.
The technical scheme of the invention is as follows:
the double-opening automobile shock absorber airtightness detection device comprises a water tank, wherein a mounting frame is arranged on the water tank, a driving cylinder and a sliding frame are arranged on the mounting frame, the sliding frame and a guide rod on the mounting frame form a sliding pair capable of moving up and down, the driving cylinder is correspondingly arranged above the sliding frame, and a piston rod of the driving cylinder is directly connected with the sliding frame; the sliding frame is provided with a barrel positioning block A and an air cylinder A, the sliding frame is provided with two parallel guide rods, and the guide rods and the sliding frame form a sliding pair; a guide rod adjusting device is fixed at one end of the guide rod; the other end of the guide rod is fixedly provided with an air cylinder mounting rack, and a barrel positioning block B and an air cylinder B are arranged on the air cylinder mounting rack; the tail ends of the cylinder A and the cylinder B are respectively connected with a sealing top head A and a sealing top head B; and a vent hole is arranged in the sealing top A and is connected with a supercharging device.
When the double-opening automobile shock absorber airtightness detection device is operated, the automobile shock absorber is positioned by using the cylinder positioning block, and the cylinder drives the sealing ejector to press the upper end opening and the lower end opening of the automobile shock absorber; the pressurizing device inputs gas, and the gas enters the cylinder body of the automobile shock absorber from the vent hole; then, driving the cylinder to drive the sliding frame to slide, so that the automobile shock absorber is completely immersed in the liquid of the water tank; whether the air tightness of the automobile shock absorber is good or not is judged by observing whether bubbles emerge from the water tank or not. The double-opening automobile shock absorber airtightness detection device provided by the invention can be used for simultaneously sealing two openings of an automobile shock absorber, so that the airtightness of the automobile shock absorber can be efficiently detected; the air tightness detection device is easy to operate, and can be operated skillfully only by simple training; meanwhile, the whole device is low in production cost and easy to popularize in enterprises.
As an optimization, in the aforementioned double-opening automobile shock absorber airtightness detection device, the guide rod adjusting device includes a handle mounting bracket, the handle mounting bracket is connected with the carriage through a screw rod, the end of the screw rod is provided with a handle, and the handle is arranged on the handle mounting bracket. The handle mounting bracket passes through the screw rod to be connected with the carriage, because the carriage is in fixed state, and the handle mounting bracket is fixed on the guide arm, and the guide arm forms the slip pair with the carriage again, drives the rotation of screw rod through the twist grip for slide each other between guide arm and the carriage, thereby adjust the distance between barrel locating piece A and the barrel locating piece B, adapt to the automobile shock absorber's of different length detection demand.
Preferably, in the air tightness detection device for the double-opening automobile shock absorber, a positioning groove is formed in the cylinder positioning block a, and a positioning block is correspondingly arranged on the cylinder positioning block B. The cylinder surface of the automobile shock absorber is positioned by the positioning groove pair, the fork of the automobile shock absorber is inserted into the positioning block, the positioning block can restrain the automobile shock absorber to move and rotate along the axial direction of the cylinder body, and the positioning block are matched with each other to realize the positioning of the automobile shock absorber.
Preferably, in the air tightness detection device for the double-opening automobile shock absorber, the guide rod is provided with an auxiliary positioning block, and the auxiliary positioning block is located between the cylinder positioning block a and the cylinder positioning block B. When sealing top B pressed the lower extreme opening at automobile shock absorber ware, received great pressure on the automobile shock absorber ware, and the existence of assistance-localization real-time piece can strengthen the holding power to automobile shock absorber ware.
Preferably, in the air tightness detection device for the automobile shock absorber with the double openings, a sliding groove is formed in the cylinder mounting frame, and the cylinder B and the sliding groove form a sliding pair. After the cylinder B and the sliding groove form a sliding pair, the position of the cylinder B on the cylinder mounting frame can be adjusted, and the opening at the lower end is sealed, so that the detection requirements of automobile shock absorbers with different lengths are met.
Preferably, in the air tightness detection device for the double-opening automobile shock absorber, a pressure tester is arranged between the supercharging device and the vent hole. After a pressure tester is arranged between the supercharging device and the vent hole, the pressure in the sealed space can be detected through the pressure tester, and whether the air tightness of the automobile shock absorber reaches the standard or not is judged in an auxiliary mode through observing the pressure value.
Preferably, in the air tightness detection device for the double-opening automobile shock absorber, the guide rod is obliquely arranged in the water tank. The guide rod is obliquely arranged in the water tank, so that the automobile shock absorber workpiece can be conveniently placed and taken.
According to the double-opening automobile shock absorber airtightness detection method, when the double-opening automobile shock absorber airtightness detection device is used, an automobile shock absorber is fixed through a cylinder body positioning block A and a cylinder body positioning block B, a cylinder A drives a sealing top head A to press an upper end opening of the automobile shock absorber, and a cylinder B drives the sealing top head B to press a lower end opening of the automobile shock absorber; then, the pressurizing device starts pressurizing, and gas enters the cylinder body of the automobile shock absorber from the vent hole of the sealing top A; meanwhile, a piston rod of the driving cylinder drives the sliding frame to slide downwards, so that the automobile shock absorber is completely immersed in the liquid of the water tank; whether bubbles emerge from the water tank or not is observed, and particularly whether bubbles emerge from the welding seam edge of the workpiece or not is observed, so that the air tightness of the automobile shock absorber is judged.
The method for detecting the air tightness of the automobile shock absorber with the double openings can be used for detecting the air tightness of the automobile shock absorber with the two openings, and has the advantages of easiness in implementation and high detection efficiency.
Preferably, in the method for detecting the air tightness of the double-opening automobile shock absorber, the distance between the cylinder positioning block A and the cylinder positioning block B is adjusted by adjusting the guide rod adjusting device, so that the detection requirements of automobile shock absorbers with different lengths are met. Due to the arrangement of the guide rod adjusting device, the adaptability of the detection method is expanded.
Preferably, in the method for detecting the air tightness of the double-opening automobile shock absorber, a sliding pair is formed between the cylinder B and the cylinder mounting frame, and the position of the cylinder B on the cylinder mounting frame can be adjusted, so that the method is suitable for the detection requirements of automobile shock absorbers with different lengths. The position of the cylinder B on the cylinder mounting frame can be adjusted, so that the adaptability of the detection method is expanded.
Drawings
FIG. 1 is an axial view of a double-opening air tightness detection device for a shock absorber of an automobile according to the present invention;
FIG. 2 is an axial view of the components mounted on the carriage;
FIG. 3 is a top view of the components mounted on the carriage;
FIG. 4 is a front view of the air tightness detection device of the double-opening automobile shock absorber of the invention;
FIG. 5 is a structural view of the carriage;
FIG. 6 is a structural view of a shock absorber for an automobile;
the labels in the figures are: 1-a water tank; 2-a mounting rack, 201-a guide rod; 3, driving a cylinder; 4-sliding rack; 5-cylinder positioning block A, 501-positioning groove; 6-cylinder A; 7-a guide rod; 8-guide rod adjusting device, 801-handle mounting rack, 802-screw rod, 803-handle; 9-cylinder positioning block B, 901-positioning block; 10-cylinder B; 11-sealing plug a; 12-sealing plug B; 13-a vent hole; 14-a pressure boosting device; 15-auxiliary positioning blocks; 16-pressure tester; 17-a cylinder mount; 18-automobile shock absorber, 1801-cylindrical surface, 1802-automobile shock absorber fork, 1803-upper end opening and 1804-lower end opening.
Detailed Description
The invention is further described in the following detailed description (including examples) with reference to the figures, but not to be construed as limiting the invention.
Referring to fig. 1-6, the double-opening air tightness detection device for the automobile shock absorber comprises a water tank 1, wherein an installation frame 2 is arranged on the water tank 1, a driving cylinder 3 and a sliding frame 4 are arranged on the installation frame 2, the sliding frame 4 and a guide rod 201 on the installation frame 2 form a sliding pair capable of moving up and down, the driving cylinder 3 is correspondingly arranged above the sliding frame 4, and a piston rod of the driving cylinder 3 is directly connected with the sliding frame 4; a barrel positioning block A5 and an air cylinder A6 are arranged on the sliding frame 4, two parallel guide rods 7 are arranged on the sliding frame 4, and the guide rods 7 and the sliding frame 4 form a sliding pair; a guide rod adjusting device 8 is fixed at one end of the guide rod 7; the other end of the guide rod 7 is fixed with an air cylinder mounting rack 17, and a cylinder positioning block B9 and an air cylinder B10 are arranged on the air cylinder mounting rack 17; the tail ends of the cylinder A6 and the cylinder B10 are respectively connected with a sealing plug A11 and a sealing plug B12; the sealing plug A11 is provided with a vent hole 13, and the vent hole 13 is connected with a pressurizing device 14.
Further, the guide rod adjusting device 8 comprises a handle mounting rack 801, the handle mounting rack 801 is connected with the sliding rack 4 through a screw 802, a handle 803 is arranged at the tail end of the screw 802, and the handle 803 is arranged on the handle mounting rack 801. The handle mounting rack 801 is connected with the sliding frame 4 through the screw rod 802, the sliding frame 4 is in a fixed state, the handle mounting rack 801 is fixed on the guide rod 7, the guide rod 7 and the sliding frame 4 form a sliding pair, the handle 803 is rotated to drive the screw rod 802 to rotate, so that the guide rod 7 and the sliding frame 4 slide mutually, the distance between the barrel positioning block A5 and the barrel positioning block B9 is adjusted, and the detection requirements of automobile shock absorbers 18 with different lengths are met.
Further, a positioning groove 501 is formed in the cylinder positioning block a5, and a positioning block 901 is correspondingly formed in the cylinder positioning block B9. The positioning groove 501 positions a cylinder surface 1801 of the automobile shock absorber 18, the automobile shock absorber fork 1802 is inserted into the positioning block 901, the positioning block 901 can restrict the automobile shock absorber 18 to move and rotate along the axial direction of the cylinder, and the positioning block 901 and the cylinder are matched with each other to position the automobile shock absorber 18.
Furthermore, an auxiliary positioning block 15 is arranged on the guide rod 7, and the auxiliary positioning block 15 is located between the cylinder positioning block a5 and the cylinder positioning block B9. When the sealing plug B12 presses on the lower end of the automobile shock absorber 18, the automobile shock absorber 18 is subjected to larger pressure, and the supporting force for the automobile shock absorber 18 can be enhanced due to the auxiliary positioning block 15.
Further, a sliding groove 1701 is arranged on the cylinder mounting frame 17, and the cylinder B10 and the sliding groove 1701 form a sliding pair. After the cylinder B10 and the sliding groove 1701 form a sliding pair, the position of the cylinder B10 on the cylinder mounting frame 17 can be adjusted, and the opening at the lower end is sealed, so that the detection requirements of automobile shock absorbers 18 with different lengths are met.
Further, a pressure tester 16 is arranged between the pressurizing device 14 and the vent hole 13. After the pressure tester 16 is arranged between the supercharging device 14 and the vent hole 13, the pressure in the sealed space can be detected through the pressure tester 16, and whether the air tightness of the automobile shock absorber 18 reaches the standard or not is judged in an auxiliary mode through observing the pressure value.
Further, the guide rod 7 is obliquely arranged in the water tank 1. The guide rod 7 is obliquely arranged in the water tank 1, so that the automobile shock absorber 18 can be conveniently placed and taken.
Example 1
Referring to fig. 1-6, during detection, a workpiece is placed first, the positioning groove 501 of the cylinder positioning block a5 positions the cylinder surface 1801 of the automobile shock absorber 18, the automobile shock absorber fork 1802 is inserted into the positioning block 901 of the cylinder positioning block B9, the positioning block 901 restricts the automobile shock absorber 18 to move and rotate along the axial direction of the cylinder, and the cylinder positioning block a5 and the cylinder positioning block B9 are matched with each other to position the automobile shock absorber 18; the cylinder A6 drives the sealing top head A11 to press the upper end opening 1803 of the automobile shock absorber 18, and the cylinder B10 drives the sealing top head B12 to press the lower end opening 1804 of the automobile shock absorber 18; then, the pressurization device 14 starts pressurization, and gas enters the cylinder body of the automobile shock absorber 18 from the vent hole 13 of the sealing plug A11; meanwhile, the piston rod of the driving cylinder 3 drives the sliding frame 4 to slide downwards, so that the automobile shock absorber 18 is completely immersed in the liquid in the water tank 1; whether the air tightness of the automobile shock absorber 18 is good or not is judged by observing whether bubbles emerge from the water tank 1 or not, particularly whether bubbles emerge from the welding seam edge of a workpiece or not, and meanwhile, whether the air tightness of the automobile shock absorber 18 reaches the standard or not is judged in an auxiliary mode by observing the numerical value of the pressure tester 16.
The above general description of the invention and the description of the specific embodiments thereof, as referred to in this application, should not be construed as limiting the technical solutions of the invention. Those skilled in the art can add, reduce or combine the technical features disclosed in the general description and/or the specific embodiments (including the examples) to form other technical solutions within the protection scope of the present application according to the disclosure of the present application without departing from the structural elements of the present invention.
Claims (10)
1. Double-opening's automobile shock absorber ware gas tightness detection device, its characterized in that: the water tank is characterized by comprising a water tank (1), wherein a mounting frame (2) is arranged on the water tank (1), a driving cylinder (3) and a sliding frame (4) are arranged on the mounting frame (2), the sliding frame (4) and a guide rod (201) on the mounting frame (2) form a sliding pair capable of moving up and down, the driving cylinder (3) is correspondingly arranged above the sliding frame (4), and a piston rod of the driving cylinder (3) is directly connected with the sliding frame (4); a barrel positioning block A (5) and an air cylinder A (6) are arranged on the sliding frame (4), two parallel guide rods (7) are arranged on the sliding frame (4), and the guide rods (7) and the sliding frame (4) form a sliding pair; a guide rod adjusting device (8) is fixed at one end of the guide rod (7); the other end of the guide rod (7) is fixed with a cylinder mounting rack (17), and a cylinder body positioning block B (9) and a cylinder B (10) are arranged on the cylinder mounting rack (17); the tail ends of the air cylinder A (6) and the air cylinder B (10) are respectively connected with a sealing top head A (11) and a sealing top head B (12); and a vent hole (13) is arranged in the sealing top A (11), and the vent hole (13) is connected with a pressurizing device (14).
2. The double-opening automobile shock absorber airtightness detection apparatus according to claim 1, wherein: guide arm adjusting device (8) include handle mounting bracket (801), handle mounting bracket (801) are connected with carriage (4) through screw rod (802), the end of screw rod (802) is equipped with handle (803), handle (803) set up on handle mounting bracket (801).
3. The double-opening automobile shock absorber airtightness detection apparatus according to claim 1, wherein: the barrel positioning block A (5) is provided with a positioning groove (501), and the barrel positioning block B (9) is correspondingly provided with a positioning block (901).
4. The double-opening automobile shock absorber airtightness detection apparatus according to claim 1, wherein: and an auxiliary positioning block (15) is arranged on the guide rod (7), and the auxiliary positioning block (15) is positioned between the barrel positioning block A (5) and the barrel positioning block B (9).
5. The double-opening automobile shock absorber airtightness detection apparatus according to claim 1, wherein: and a sliding groove (1701) is formed in the cylinder mounting frame (17), and the cylinder B (10) and the sliding groove (1701) form a sliding pair.
6. The double-opening automobile shock absorber airtightness detection apparatus according to claim 1, wherein: and a pressure tester (16) is arranged between the supercharging device (14) and the vent hole (13).
7. The double-opening automobile shock absorber airtightness detection apparatus according to claim 1, wherein: the guide rod (7) is obliquely arranged in the water tank (1).
8. The double-opening automobile shock absorber airtightness detection method is characterized in that: when the double-opening automobile shock absorber airtightness detection device according to claim 1 is used, the automobile shock absorber (18) is fixed by the barrel positioning block a (5) and the barrel positioning block B (9), the cylinder a (6) drives the sealing plug a (11) to press against the upper end opening (1803) of the automobile shock absorber (18), and the cylinder B (10) drives the sealing plug B (12) to press against the lower end opening (1804) of the automobile shock absorber (18); then, the pressurizing device (14) starts pressurizing, and gas enters the cylinder body of the automobile shock absorber (18) from the vent hole (13) of the sealing top head A (11); meanwhile, a piston rod of the driving cylinder (3) drives the sliding frame (4) to slide downwards, so that the automobile shock absorber (18) is completely immersed in the liquid of the water tank (1); whether the air tightness of the automobile shock absorber (18) is good or bad is judged by observing whether bubbles emerge from the water tank (1).
9. The double-opening automobile shock absorber airtightness detection method according to claim 8, wherein: the distance between the cylinder positioning block A (5) and the cylinder positioning block B (9) is adjusted by adjusting the guide rod adjusting device (8), so that the detection requirements of automobile shock absorbers (18) with different lengths are met.
10. The double-opening automobile shock absorber airtightness detection method according to claim 8, wherein: a sliding pair is formed between the cylinder B (10) and the cylinder mounting frame (17), and the position of the cylinder B (10) on the cylinder mounting frame (17) can be adjusted, so that the detection requirements of automobile shock absorbers (18) with different lengths are met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111283151.9A CN113984290A (en) | 2021-11-01 | 2021-11-01 | Double-opening automobile shock absorber airtightness detection device and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111283151.9A CN113984290A (en) | 2021-11-01 | 2021-11-01 | Double-opening automobile shock absorber airtightness detection device and detection method thereof |
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| CN113984290A true CN113984290A (en) | 2022-01-28 |
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| CN202111283151.9A Pending CN113984290A (en) | 2021-11-01 | 2021-11-01 | Double-opening automobile shock absorber airtightness detection device and detection method thereof |
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| KR20060124087A (en) * | 2005-05-30 | 2006-12-05 | (주)유원엔지니어링 | Leak testing apparatus of a pipe |
| CN101520078A (en) * | 2009-04-10 | 2009-09-02 | 罗世春 | Shock absorber for bicycle or baby carrier |
| CN203479471U (en) * | 2013-08-07 | 2014-03-12 | 四川左军机械制造有限公司 | A fuel tank air impermeability testing apparatus |
| CN206648788U (en) * | 2017-04-17 | 2017-11-17 | 浙江海洋大学东海科学技术学院 | A kind of testing agency of medical needle air-tightness |
| CN209432375U (en) * | 2019-02-23 | 2019-09-24 | 浙江超强智控科技股份有限公司 | A kind of air tightness detection equipment of bearing tank shell |
| CN213068091U (en) * | 2020-10-20 | 2021-04-27 | 高斯康实业有限公司 | Liquid immersion type pressure pipe air tightness detection device |
| CN112857691A (en) * | 2019-11-27 | 2021-05-28 | 大冶市华顺机械制造有限公司 | Intercooler core group air tightness test device |
| CN214309360U (en) * | 2021-01-28 | 2021-09-28 | 西格迈股份有限公司 | Air tightness detection device for liquid storage cylinder of automobile shock absorber |
-
2021
- 2021-11-01 CN CN202111283151.9A patent/CN113984290A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060124087A (en) * | 2005-05-30 | 2006-12-05 | (주)유원엔지니어링 | Leak testing apparatus of a pipe |
| CN101520078A (en) * | 2009-04-10 | 2009-09-02 | 罗世春 | Shock absorber for bicycle or baby carrier |
| CN203479471U (en) * | 2013-08-07 | 2014-03-12 | 四川左军机械制造有限公司 | A fuel tank air impermeability testing apparatus |
| CN206648788U (en) * | 2017-04-17 | 2017-11-17 | 浙江海洋大学东海科学技术学院 | A kind of testing agency of medical needle air-tightness |
| CN209432375U (en) * | 2019-02-23 | 2019-09-24 | 浙江超强智控科技股份有限公司 | A kind of air tightness detection equipment of bearing tank shell |
| CN112857691A (en) * | 2019-11-27 | 2021-05-28 | 大冶市华顺机械制造有限公司 | Intercooler core group air tightness test device |
| CN213068091U (en) * | 2020-10-20 | 2021-04-27 | 高斯康实业有限公司 | Liquid immersion type pressure pipe air tightness detection device |
| CN214309360U (en) * | 2021-01-28 | 2021-09-28 | 西格迈股份有限公司 | Air tightness detection device for liquid storage cylinder of automobile shock absorber |
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