CN101038229A - Vacuum sealing test bed for brake master cylinder - Google Patents
Vacuum sealing test bed for brake master cylinder Download PDFInfo
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- CN101038229A CN101038229A CN 200710068403 CN200710068403A CN101038229A CN 101038229 A CN101038229 A CN 101038229A CN 200710068403 CN200710068403 CN 200710068403 CN 200710068403 A CN200710068403 A CN 200710068403A CN 101038229 A CN101038229 A CN 101038229A
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- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 title claims abstract description 26
- 239000000446 fuel Substances 0.000 claims description 9
- 230000008093 supporting effect Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010998 test method Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
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- 230000011218 segmentation Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
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Abstract
The invention relates to automobile accessory detection equipment, in particular to a brake master cylinder vacuum sealing test bed. It is characterized in that a sealing chamber is arranged on the periphery of the first-stage sealing device of the brake main cylinder, the sealing chamber is connected with a vacuum generator, and an air duct on the sealing head is also connected with the corresponding vacuum generator. Its purpose is in order to design a brake master cylinder vacuum seal test bench that detects convenience, simple structure. Compared with the prior art, the sealing device has the advantages of low manufacturing cost, reliable sealing, convenient assembly and disassembly and the like.
Description
Technical field
The present invention relates to the auto parts machinery checkout equipment, particularly relate to a kind of braking main cylinder vacuum sealing test bench.
Background technology
Master cylinder is the key parts of auto parts machinery, and it is made of Master cylinder body, double-piston, level Four packoff.Judging whether a master cylinder is qualified, mainly is whether the sealing property that will detect the level Four packoff reaches requirement.Traditional detection method adopts the pressure integrity test method, its corresponding pressure integrity test platform comprises stand, braking master cylinder fuel inlet hole packoff, master cylinder afterbody hold down gag, master cylinder manoeuvring test device, wherein, braking master cylinder fuel inlet hole packoff is by cylinder, seal head constitutes, seal head is provided with airway, master cylinder manoeuvring test device is by digital cylinder, mobile putter constitutes, mobile putter withstands on the master cylinder first piston head, its principle is according to level Four packoff four annular seal space structures forming of diverse location each other, in annular seal space, import pressurized air one by one by the airway segmentation on the seal head, variation falls in the air pressure of observing inner chamber, detect the sealing property of judging the level Four packoff, thereby judge whether master cylinder is qualified.By practice, we recognize that there are a lot of drawbacks in traditional test method: 1, whole test device structure complexity, and design difficulty is big, and expense is comparatively expensive; 2, the adjustment of equipment trouble, the sealing difficulty; 3, because the turnover oilhole of master cylinder all will carry out seal approach, so the cylinder of a lot of sealing usefulness that distributed around the workpiece, very inconvenient when making work-handling; 4, owing to will import pressurized air, can bring some moisture, greasy dirt into unavoidably, bring hidden danger of quality to product easily to inner chamber.
Summary of the invention
The objective of the invention is to design a kind of braking main cylinder vacuum sealing test bench easy to detect, simple in structure.
In order to achieve the above object, the present invention adopts following technical solution: a kind of braking main cylinder vacuum sealing test bench, comprise stand, braking master cylinder fuel inlet hole packoff, master cylinder afterbody hold down gag, master cylinder manoeuvring test device, wherein, braking master cylinder fuel inlet hole packoff is by cylinder, seal head constitutes, seal head is provided with airway, master cylinder manoeuvring test device is by digital cylinder, mobile putter constitutes, mobile putter withstands on the master cylinder first piston head, it is characterized in that being provided with closed chamber in master cylinder first order packoff periphery, closed chamber is connected with vacuum generator, and the airway on the seal head also connects corresponding vacuum generator.
Because this testing table is on the basis that utilizes four annular seal space structures of master cylinder self, put in order and add an auxiliary seal chamber, vacuumize from five annular seal spaces one by one by segmentation, make the certain draught head of the inside and outside formation of annular seal space, variation falls in the air pressure of observing inner chamber, if cause extraneous air to infiltrate owing to the sealing property of packoff is defective, then the air pressure general who has surrendered of inner chamber exceeds zone of reasonableness, can judge that then this place's packoff is defective; Otherwise, can prove that then the sealing property of this place's packoff is intact.Its test principle is just gone with anti-its road of traditional test principle, saved the packoff that traditional being used to seals oil outlet, make that the space of test table top is openr, structure is simpler, the loading and unloading step reduces, detect more convenient, cost reduces greatly, approximately has only half price of traditional experiment platform.
Description of drawings
Below in conjunction with accompanying drawing, embodiment and vacuum test test method(s) the present invention is described in further detail.
Fig. 1 is the present embodiment structural representation.
Fig. 2 is detected product structure sample drawing.
Fig. 3 is level Four packoff position mobile status figure each other in the detected product test process of the test.
Embodiment
As Fig. 1, shown in Figure 2, present embodiment comprises stand 1, braking master cylinder fuel inlet hole packoff (2,3), master cylinder afterbody hold down gag (5,6), master cylinder manoeuvring test device (16,17), wherein, braking master cylinder fuel inlet hole packoff (2,3) by cylinder 2, seal head 3 constitutes, seal head 3 is provided with airway, master cylinder manoeuvring test device (16,17) by digital cylinder 17, mobile putter 16 constitutes, mobile putter 16 withstands on the master cylinder first piston head, be provided with closed chamber 14 in master cylinder first order packoff 13 peripheries, closed chamber 14 comprises housing 15, O-ring seal 18,12, housing is provided with inner chamber, inner chamber one end is socketed on the mobile putter 16, O-ring seal 18 is located between the joint face, the inner chamber other end is braked 20 supportings of master cylinder head, O-ring seal 12 is located at this supporting position, two O-ring seals 18, the space that constitutes between 12 forms closed chamber 14.Closed chamber 14 is connected with vacuum generator (not drawing among the figure) by air extraction connector 19, and the airway on the seal head 3 also connects corresponding vacuum generator (not drawing among the figure).
Be applied to master cylinder level Four packoff testing experiment with regard to present embodiment below and carry out aid illustration.
1, test first order packoff 13:
(1) by vacuum generator closed chamber 14 is vacuumized, make the closed chamber internal gas pressure reach certain negative pressure (0.026Mpa);
(2) pressurize certain hour checks that by vacuum manometer the pressure in the closed chamber falls whether surpass the regulation requirement, can judge whether first order packoff 13 is qualified.
2, test second level packoff 11:
(1) oil-feed emptying aperture 4 sealings that utilize braking master cylinder fuel inlet hole packoff that a master cylinder left side is surveyed;
(2) digital cylinder advances by mobile handspike 16 promotion left pistons, forward travel distance is greater than 5mm, because second level packoff 11 is positioned on the left piston, when this piston forward is advanced to surpass a segment distance (surpassing 5mm), the compensate opening 10 that then is positioned at left oil supply hole is cut off (as shown in Figure 3) with the oil-out path, then forms an annular seal space in second level packoff 11 left sides;
(3) vacuum generator vacuumizes by the annular seal space of the airway on the left seal head to above-mentioned formation, makes air pressure reach certain negative pressure (0.026Mpa);
(4) pressurize certain hour checks that by vacuum manometer the pressure in the annular seal space falls whether surpass the regulation requirement, can judge whether second level packoff is qualified.
Because the test method of two-stage packoff is similar in addition, has just repeated no more here.
In sum, the present invention is when possessing even reaching better test objective. Not only Overcome all shortcomings of traditional pressure integrity test method, also possessed following advantage:
1, cheap. Because saved traditional sealing air cylinder that is used for the sealing oil outlet, with And the improvement at other positions, so that cost reduces greatly, approximately only have half of traditional experiment platform Price. This is so that allow numerous economic strengths not be that the very strong private entrepreneur accepts to become possibility.
3, sealing is reliable.
3, easy to loading and unloading. Owing to saved traditional sealing air cylinder that is used for the sealing oil outlet, made The space that must test table top is openr, makes things convenient for the loading and unloading of workpiece.
4, guaranteed product quality.Only inner chamber is vacuumized when the present invention tests, some moisture, greasy dirt can not brought in the master cylinder, can not bring hidden danger product quality.
Claims (2)
1, a kind of braking main cylinder vacuum sealing test bench, comprise stand (1), braking master cylinder fuel inlet hole packoff (2,3), master cylinder afterbody hold down gag (5,6), master cylinder manoeuvring test device (16,17), wherein, braking master cylinder fuel inlet hole packoff (2,3) by cylinder (2), seal head (3) constitutes, seal head (3) is provided with airway, master cylinder manoeuvring test device (16,17) by digital cylinder (17), mobile putter (16) constitutes, mobile putter (16) withstands on the master cylinder first piston head, it is characterized in that being provided with closed chamber (14) in master cylinder first order packoff (13) periphery, closed chamber (14) is connected with vacuum generator, and the airway on the seal head (3) also connects corresponding vacuum generator.
2, braking main cylinder vacuum sealing test bench according to claim 1, it is characterized in that closed chamber (14) comprises housing (15), O-ring seal (18), (12), housing is provided with inner chamber, inner chamber one end is socketed on the mobile putter (16), O-ring seal (18) is located between the joint face, the inner chamber other end is braked master cylinder head (20) supporting, and O-ring seal (12) is located at this supporting position, and the space that constitutes between two O-ring seals (18), (12) forms closed chamber (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710068403XA CN100483095C (en) | 2007-04-27 | 2007-04-27 | Vacuum sealing test bed for brake master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710068403XA CN100483095C (en) | 2007-04-27 | 2007-04-27 | Vacuum sealing test bed for brake master cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101038229A true CN101038229A (en) | 2007-09-19 |
| CN100483095C CN100483095C (en) | 2009-04-29 |
Family
ID=38889277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710068403XA Expired - Fee Related CN100483095C (en) | 2007-04-27 | 2007-04-27 | Vacuum sealing test bed for brake master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100483095C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988861B (en) * | 2009-07-30 | 2013-09-11 | 上海新沪电机厂有限公司 | System for detecting air tightness of cavity of mechanical and electrical product |
| CN103383331A (en) * | 2013-07-18 | 2013-11-06 | 芜湖东方汽车仪表有限公司 | Abrasion-resistant sealing test bed |
| CN104155056A (en) * | 2014-07-19 | 2014-11-19 | 芜湖恒坤汽车部件有限公司 | Air tightness detection device for brake hydraulic cylinder |
| CN104155058A (en) * | 2014-07-19 | 2014-11-19 | 芜湖恒坤汽车部件有限公司 | Self-adaptive clamping seat for gas tightness detection of brake hydraulic cylinder |
| CN104155057A (en) * | 2014-07-19 | 2014-11-19 | 芜湖恒坤汽车部件有限公司 | Linkage compression type pump body gas tightness detecting clamp |
| CN104175251A (en) * | 2014-07-21 | 2014-12-03 | 芜湖恒坤汽车部件有限公司 | Air-tightness detection fixture for brake wheel cylinder |
| CN104180943A (en) * | 2014-07-19 | 2014-12-03 | 芜湖恒坤汽车部件有限公司 | Oil pressure airtightness testing device for clutch pump |
| CN106289676A (en) * | 2016-08-04 | 2017-01-04 | 哈尔滨东安汽车发动机制造有限公司 | A kind of for clutch hydraulic cylinder air-tightness automatic detection device |
| CN104155060B (en) * | 2014-07-19 | 2017-01-18 | 芜湖恒坤汽车部件有限公司 | Dual-piston brake master cylinder air tightness detection fixture |
| CN112556941A (en) * | 2020-11-30 | 2021-03-26 | 奇瑞商用车（安徽）有限公司 | Air tightness detection device and detection method for clutch main cylinder assembly |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858818B (en) * | 2010-06-21 | 2011-09-28 | 南通星维油泵油嘴有限公司 | Testing device for detecting sealing property of delivery valve matching parts |
| CN102303235B (en) * | 2011-06-14 | 2013-03-20 | 南通星维油泵油嘴有限公司 | Press fit testing device for buffer valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3982421A (en) * | 1975-11-06 | 1976-09-28 | Wallace Richard G | Seal tester |
| US5337598A (en) * | 1992-01-17 | 1994-08-16 | Bimba Manufacturing Company | Leak test port plug |
| US6094977A (en) * | 1998-09-23 | 2000-08-01 | New York Air Brake Corporation | Brake cylinder leakage test method and device |
| US20020069691A1 (en) * | 2000-12-08 | 2002-06-13 | Roberts Daryl L. | Low volume vacuum source for leak test fixture |
| EP1400798A1 (en) * | 2002-09-10 | 2004-03-24 | STMicroelectronics S.r.l. | Leak detection system in a vacuum installation and joint for use in the system |
| CN2758140Y (en) * | 2004-04-22 | 2006-02-15 | 芜湖华亨汽车部件有限公司 | Vacuum booster having brake master cylinder |
| CN201047804Y (en) * | 2007-04-27 | 2008-04-16 | 郭琅琅 | Vacuum sealing test bed for brake master cylinder |
-
2007
- 2007-04-27 CN CNB200710068403XA patent/CN100483095C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988861B (en) * | 2009-07-30 | 2013-09-11 | 上海新沪电机厂有限公司 | System for detecting air tightness of cavity of mechanical and electrical product |
| CN103383331A (en) * | 2013-07-18 | 2013-11-06 | 芜湖东方汽车仪表有限公司 | Abrasion-resistant sealing test bed |
| CN104155056A (en) * | 2014-07-19 | 2014-11-19 | 芜湖恒坤汽车部件有限公司 | Air tightness detection device for brake hydraulic cylinder |
| CN104155058A (en) * | 2014-07-19 | 2014-11-19 | 芜湖恒坤汽车部件有限公司 | Self-adaptive clamping seat for gas tightness detection of brake hydraulic cylinder |
| CN104155057A (en) * | 2014-07-19 | 2014-11-19 | 芜湖恒坤汽车部件有限公司 | Linkage compression type pump body gas tightness detecting clamp |
| CN104180943A (en) * | 2014-07-19 | 2014-12-03 | 芜湖恒坤汽车部件有限公司 | Oil pressure airtightness testing device for clutch pump |
| CN104155057B (en) * | 2014-07-19 | 2017-01-11 | 芜湖恒坤汽车部件有限公司 | Linkage compression type pump body gas tightness detecting clamp |
| CN104155060B (en) * | 2014-07-19 | 2017-01-18 | 芜湖恒坤汽车部件有限公司 | Dual-piston brake master cylinder air tightness detection fixture |
| CN104175251A (en) * | 2014-07-21 | 2014-12-03 | 芜湖恒坤汽车部件有限公司 | Air-tightness detection fixture for brake wheel cylinder |
| CN106289676A (en) * | 2016-08-04 | 2017-01-04 | 哈尔滨东安汽车发动机制造有限公司 | A kind of for clutch hydraulic cylinder air-tightness automatic detection device |
| CN112556941A (en) * | 2020-11-30 | 2021-03-26 | 奇瑞商用车（安徽）有限公司 | Air tightness detection device and detection method for clutch main cylinder assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100483095C (en) | 2009-04-29 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20120427 |