CN203069336U - Hydraulic valve hole pressure oil passage leakage detection device - Google Patents
Hydraulic valve hole pressure oil passage leakage detection device Download PDFInfo
- Publication number
- CN203069336U CN203069336U CN 201220651089 CN201220651089U CN203069336U CN 203069336 U CN203069336 U CN 203069336U CN 201220651089 CN201220651089 CN 201220651089 CN 201220651089 U CN201220651089 U CN 201220651089U CN 203069336 U CN203069336 U CN 203069336U
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- ring
- axle sleeve
- shaft sleeve
- hydraulic valve
- ring seal
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Abstract
The utility model relates to a device for detecting sealing performance of mechanical parts, and particularly relates to a hydraulic valve hole pressure oil passage leakage detection device, so as to solve the problem that no device can be applied to hydraulic valve hole pressure oil passage leakage detection in the prior art. The detection device comprises a core shaft assembly matched with the valve hole of the hydraulic valve; the core shaft assembly comprises a core shaft and a shaft sleeve; the shaft sleeve comprises an inner shaft sleeve, a middle shaft sleeve and an outer shaft sleeve; the front end of the core shaft is provided with an annular limiting shoulder for limiting the position of the inner shaft sleeve; a first sealing ring, a second sealing ring and a third sealing ring are respectively arranged between the inner shaft sleeve and the limiting shoulder, the inner shaft sleeve and the middle shaft sleeve and the middle shaft sleeve and the outer shaft sleeve; a positioning ring and an elastic clamping ring are sequentially arranged at the tail end of the shaft end outside the outer shaft sleeve; and the shaft sleeve and the positioning ring are in sliding connection with the core shaft, the elastic clamping ring is in buckling connection with the core shaft, and the elastic clamping ring abuts against the positioning ring. The hydraulic valve hole pressure oil passage leakage detection device has the advantages of simple structure, convenient processing, high detection efficiency, and good reliability.
Description
Technical field
The utility model relates to a kind of pick-up unit of component of machine sealing property, particularly a kind of hydraulic valve valve opening pressure oil duct leak detection apparatus.
Background technology
In automobile popular day by day today, automotive engineering constantly develops, client is more and more stricter to the requirement of automobile, automatic transmission can be eliminated low the reaching of difference, manipulation strength on occupation and the non-professional driver's operation technical ability and comfortablely more and more be admitted by Chinese market, valve body is the core of automatic transmission, the valve body performance impact performance of automatic transmission, after machining, valve body must carry out leak-testing to the pressure oil duct, prevent that valve body from causing the valve body malfunction because of blow hole, be not applicable to the device of hydraulic valve valve opening pressure oil duct leak detection in the prior art.
Chinese patent notification number CN202255855U, May 30 2012 Granted publication day, a kind of hydraulic valve pressure test device is disclosed, comprise Vertical Rack, be provided with upper bracket and lower carriage at Vertical Rack, described lower carriage is provided with at least two hydraulic jacks, is provided with the lower seal closure plate on each hydraulic jack; Described upper bracket and described lower seal closure plate correspondence position are provided with the last shutoff plate that is complementary, also comprise the prepackage platform, described prepackage platform is installed on the support that fixes with Vertical Rack by slide rail, described prepackage platform is provided with described lower seal closure plate and last shutoff plate and forms the draw-in groove that the detection station is complementary, and described draw-in groove can move to the detection station by slide rail.Weak point is: complex structure is not suitable for the device of hydraulic valve valve opening pressure oil duct leak detection.
Summary of the invention
The purpose of this utility model is to solve the device that prior art is not applicable to hydraulic valve valve opening pressure oil duct leak detection, provide a kind of simple in structure, easy to process, detection efficiency is high, the hydraulic valve valve opening pressure oil duct leak detection apparatus of good reliability.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of hydraulic valve valve opening pressure oil duct leak detection apparatus, comprise the mandrel assembly adaptive with the valve opening of hydraulic valve, described mandrel assembly comprises mandrel and axle sleeve, axle sleeve is by internal axle sleeve, middle axle sleeve and outer shaft constitute, the mandrel front end is provided with for the annular stop shoulder that limits the internal axle sleeve position, between internal axle sleeve and the spacing shoulder, be respectively equipped with first O-ring seal between internal axle sleeve and the middle axle sleeve and between middle axle sleeve and the outer shaft, second O-ring seal, the 3rd O-ring seal, the mandrel tail end is positioned at the outer shaft outside and is provided with centring ring and snap ring successively, axle sleeve and centring ring and mandrel are slidingly connected, snap ring and mandrel clamping, snap ring and centring ring butt.After the mandrel assembly is fitted into the hydraulic valve valve opening, toward interior promotion centring ring, internal axle sleeve, middle axle sleeve and outer shaft axial compression, first O-ring seal, second O-ring seal and the 3rd O-ring seal axial compression, radial dilatation, form interference fit with valve opening, the pressure oil duct at the two ends of hydraulic valve valve opening pressure oil cavity is isolated into two independently cavitys, feed pressurized air from two air holes of hydraulic valve both sides, can judge by the variation of pressure whether hydraulic valve valve opening pressure oil duct has the blow hole of the leakage of causing.
As preferably, middle axle sleeve one end is provided with chamfering, and the corresponding end of internal axle sleeve is provided with limited impression, in the middle of second O-ring seal is installed on the chamfering of axle sleeve.On the chamfering by axle sleeve in the middle of second O-ring seal is installed in, the external diameter of second O-ring seal is less than the valve opening internal diameter, be easy to install, in the intermediate shaft cover compression process, the amount of radial expansion of second O-ring seal is big, axial compression by a small margin can obtain bigger amount of radial expansion, be easy to form interference fit with valve opening the axial compression amount of axle sleeve in the middle of good sealing effect, stopper slot can be controlled, and then control the amount of radial expansion of second O-ring seal, second O-ring seal is not fragile, and after test finished, middle axle sleeve and internal axle sleeve unclamped, second O-ring seal restores to the original state, and has avoided second O-ring seal to be and has continued the radial dilatation state and fracture easily.
As preferably, outer shaft one end is provided with chamfering, and the corresponding end of middle axle sleeve is provided with limited impression, and the 3rd O-ring seal is installed on the chamfering of outer shaft.By the 3rd O-ring seal being installed on the chamfering of outer shaft, the external diameter of the 3rd O-ring seal is less than the valve opening internal diameter, be easy to install, in the outer shaft compression process, the amount of radial expansion of the 3rd O-ring seal is big, axial compression by a small margin can obtain bigger amount of radial expansion, be easy to form interference fit with valve opening, good sealing effect, stopper slot can be controlled the axial compression amount of outer shaft, and then control the amount of radial expansion of the 3rd O-ring seal, the 3rd O-ring seal is not fragile, and after test finished, outer shaft and middle axle sleeve unclamped, the 3rd O-ring seal restores to the original state, and has avoided the 3rd O-ring seal to be and has continued the radial dilatation state and fracture easily.
As preferably, the cross section diameter of first O-ring seal, second O-ring seal and the 3rd O-ring seal is 1.8 ~ 2.5mm.The control of the cross section diameter of first O-ring seal, second O-ring seal and the 3rd O-ring seal is at zone of reasonableness, intensity height, good sealing effect, easy fracture not, long service life.
As preferably, be provided with ring spring between centring ring and the snap ring, ring spring is socketed on the mandrel, the two ends of ring spring respectively with outer shaft and centring ring butt.Ring spring is set, can slows down the acting force that outer bound pair centring ring applies, axle sleeve is slowly compression axially, and the mandrel assembly is not easy to wear, O-ring seal is not fragile, after test finishes, unclamps snap ring, and ring spring automatically resets, back down centring ring, axle sleeve unclamps, and is simple to operation.
The beneficial effects of the utility model are: simple in structure, processing cost is low, is easy to assembling during use; By at middle axle sleeve and outer shaft chamfering being set, second O-ring seal and the 3rd O-ring seal are installed on the chamfering, second O-ring seal and the 3rd O-ring seal amount of radial expansion are big when middle axle sleeve and outer shaft compression, be easy to form interference fit with valve opening, good sealing effect, second O-ring seal and the 3rd O-ring seal are not fragile, long service life; Adopt the compressed-air actuated mode of feeding to detect detection efficiency height, good reliability.
Description of drawings
Fig. 1 is the cut-open view of the utility model embodiment 1;
Fig. 2 is the cut-open view of the utility model embodiment 2.
Among the figure: 1, mandrel assembly, 11, mandrel, 111, spacing shoulder, 12 first O-ring seals, 13, internal axle sleeve, 14, second O-ring seal, 15, middle axle sleeve, the 16, the 3rd O-ring seal, 17, outer shaft, 2, centring ring, 3, snap ring, 4, hydraulic valve, 41, blow vent, 42, pressing plate, 43, packing ring.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
A kind of hydraulic valve valve opening pressure oil duct leak detection apparatus as shown in Figure 1, comprise the mandrel assembly 1 adaptive with the valve opening of hydraulic valve 4, described mandrel assembly 1 comprises mandrel 11 and axle sleeve, axle sleeve is by internal axle sleeve 13, middle axle sleeve 15 and outer shaft 17 constitute, mandrel 11 front ends are processed with annular stop shoulder 111, first O-ring seal 12 is installed between internal axle sleeve 13 and the spacing shoulder 111, middle axle sleeve 15 1 ends are processed with chamfering, the corresponding end of internal axle sleeve 13 is processed with limited impression, assembling second O-ring seal 14 on the chamfering of middle axle sleeve 15, outer shaft 17 1 ends are processed with chamfering, the corresponding end of middle axle sleeve 15 is provided with limited impression, the 3rd O-ring seal 16 is installed on the chamfering of outer shaft 17, first O-ring seal 12, the cross section diameter of second O-ring seal 14 and the 3rd O-ring seal 16 is 1.8 ~ 2.5mm, present embodiment adopts 2.0mm, mandrel 11 tail ends are positioned at outer shaft 17 outsides centring ring 2 and snap ring 3 are installed successively, axle sleeve and centring ring 2 are slidingly connected with mandrel 11, snap ring 3 and mandrel 11 clampings, snap ring 3 and centring ring 2 butts.
When the utility model uses: mandrel assembly 1 is packed in the valve opening of hydraulic valve 4, stir centring ring 2, centring ring 2 moves to outer shaft 17 collides, further promote centring ring 2, outer shaft 17, middle axle sleeve 15 and internal axle sleeve 13 be axial compression in succession, by snap ring 3 and centring ring 2 butts, axle sleeve after preventing from compressing withdraws from, the chamfering of axle sleeve compression rear intermediate shaft cover 15 and outer shaft 17 is absorbed in the limited impression of corresponding internal axle sleeve 13 and middle axle sleeve 15, second O-ring seal 14 and the 3rd O-ring seal 16 radial dilatation, radial dilatation in the time of first O-ring seal, 12 axial compression, first O-ring seal 12, second O-ring seal 14 and the 3rd O-ring seal 16 and valve opening interference fit, form a left side, right two oil closed cavities, then with packing ring 43 and pressing plate 42 fit ons of hydraulic valve 4 self, two blow vents 41 by hydraulic valve 4 feed pressure gas, detect the impermeability of two oil closed cavities.
After finishing using, unclamp snap ring 3, centring ring 2 is removed, and axle sleeve namely unclamps, and first O-ring seal 12, second O-ring seal 14 and the 3rd O-ring seal 16 restore to the original state, and mandrel assembly 1 can easily withdraw from valve opening.
And the difference of embodiment 1 is: be provided with ring spring 5 between centring ring 2 and the snap ring 3, ring spring 5 is socketed on the mandrel 11, the two ends of ring spring 5 respectively with outer shaft 17 and centring ring 2 butts.
When the utility model uses: mandrel assembly 1 is packed in the valve opening of hydraulic valve 4, stir centring ring 2, centring ring 2 moves to ring spring 5 collides, further promote centring ring 2, thereby ring spring 5 compressions drive outer shaft 17, middle axle sleeve 15 and internal axle sleeve 13 be axial compression in succession, by snap ring 3 and centring ring 2 butts, axle sleeve after preventing from compressing withdraws from, the chamfering of axle sleeve compression rear intermediate shaft cover 15 and outer shaft 17 is absorbed in the groove of corresponding internal axle sleeve 13 and middle axle sleeve 15, second O-ring seal 14 and the 3rd O-ring seal 16 radial dilatation, radial dilatation in the time of first O-ring seal, 12 axial compression, first O-ring seal 12, second O-ring seal 14 and the 3rd O-ring seal 16 and valve opening interference fit, form a left side, right two oil closed cavities, then with packing ring 43 and pressing plate 42 fit ons of hydraulic valve 4 self, two blow vents 41 by hydraulic valve 4 feed pressure gas, detect the impermeability of two oil closed cavities.
After finishing using, unclamp snap ring 3, ring spring 5 relies on the elastic restoring force of self to flick centring ring 2, and axle sleeve also namely unclamps, and first O-ring seal 12, second O-ring seal 14 and the 3rd O-ring seal 16 restore to the original state, and mandrel assembly 1 can easily withdraw from valve opening.
Above-described embodiment is a kind of preferable scheme of the present utility model, is not that the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
Claims (5)
1. hydraulic valve valve opening pressure oil duct leak detection apparatus, it is characterized in that, comprise the mandrel assembly (1) adaptive with the valve opening of hydraulic valve (4), described mandrel assembly (1) comprises mandrel (11) and axle sleeve, axle sleeve is by internal axle sleeve (13), middle axle sleeve (15) and outer shaft (17) constitute, mandrel (11) front end is provided with for the annular stop shoulder (111) that limits internal axle sleeve (13) position, between internal axle sleeve (13) and the spacing shoulder (111), be respectively equipped with first O-ring seal (12) between internal axle sleeve (13) and the middle axle sleeve (15) and between middle axle sleeve (15) and the outer shaft (17), second O-ring seal (14), the 3rd O-ring seal (16), mandrel (11) tail end is positioned at outer shaft (17) outside and is provided with centring ring (2) and snap ring (3) successively, axle sleeve and centring ring (2) are slidingly connected with mandrel (11), snap ring (3) and mandrel (11) clamping, snap ring (3) and centring ring (2) butt.
2. a kind of hydraulic valve valve opening pressure oil duct leak detection apparatus according to claim 1, it is characterized in that, middle axle sleeve (15) one ends are provided with chamfering, and the corresponding end of internal axle sleeve (13) is provided with limited impression, and second O-ring seal (14) is installed on the chamfering of middle axle sleeve (15).
3. a kind of hydraulic valve valve opening pressure oil duct leak detection apparatus according to claim 1 and 2, it is characterized in that, outer shaft (17) one ends are provided with chamfering, and the corresponding end of middle axle sleeve (15) is provided with limited impression, and the 3rd O-ring seal (16) is installed on the chamfering of outer shaft (17).
4. a kind of hydraulic valve valve opening pressure oil duct leak detection apparatus according to claim 1 and 2 is characterized in that the cross section diameter of first O-ring seal (12), second O-ring seal (14) and the 3rd O-ring seal (16) is 1.8 ~ 2.5mm.
5. a kind of hydraulic valve valve opening pressure oil duct leak detection apparatus according to claim 1 and 2, it is characterized in that: be provided with ring spring (5) between centring ring (2) and the snap ring (3), ring spring (5) and mandrel (11) socket, the two ends of ring spring (5) respectively with outer shaft (17) and centring ring (2) butt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220651089 CN203069336U (en) | 2012-12-03 | 2012-12-03 | Hydraulic valve hole pressure oil passage leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220651089 CN203069336U (en) | 2012-12-03 | 2012-12-03 | Hydraulic valve hole pressure oil passage leakage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069336U true CN203069336U (en) | 2013-07-17 |
Family
ID=48768110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220651089 Expired - Fee Related CN203069336U (en) | 2012-12-03 | 2012-12-03 | Hydraulic valve hole pressure oil passage leakage detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203069336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108481255A (en) * | 2018-04-27 | 2018-09-04 | 博世华域转向系统有限公司 | The extracting tool and method for dismounting of a kind of fluid-link steering machine centre oil sealing |
-
2012
- 2012-12-03 CN CN 201220651089 patent/CN203069336U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108481255A (en) * | 2018-04-27 | 2018-09-04 | 博世华域转向系统有限公司 | The extracting tool and method for dismounting of a kind of fluid-link steering machine centre oil sealing |
| CN108481255B (en) * | 2018-04-27 | 2024-05-17 | 博世华域转向系统有限公司 | Disassembling tool and method for middle oil seal of hydraulic steering machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20131203 |