CN210603892U - Shock absorber case flow testing arrangement - Google Patents
Shock absorber case flow testing arrangement Download PDFInfo
- Publication number
- CN210603892U CN210603892U CN201921737979.5U CN201921737979U CN210603892U CN 210603892 U CN210603892 U CN 210603892U CN 201921737979 U CN201921737979 U CN 201921737979U CN 210603892 U CN210603892 U CN 210603892U
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- Prior art keywords
- valve seat
- lower valve
- cylindrical hole
- cover
- inverted
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Abstract
A flow testing device for a valve core of a shock absorber is characterized in that an inner cavity of a lower valve seat is a cylindrical hole, the inner cavity of the lower valve seat is fixedly connected with an external oil supply pipe, the bottom of the lower valve seat is provided with a circular groove, a sealing element is embedded between the circular groove at the bottom of the lower valve seat and the bottom surface of an oil groove, and the bottom of the lower valve seat is fixedly connected with the oil groove; two side surfaces of the upper valve seat are provided with guide rail grooves in the horizontal direction; the cross section of the valve cover is in an inverted U shape, two inner sides of the inverted U shape of the valve cover are provided with guide rails in the horizontal direction, the two inner side guide rails of the valve cover extend to the rear part of the inverted U-shaped body, the two inner side guide rails of the valve cover are matched with the two side guide rail grooves of the upper valve seat, and the valve cover can only move back and forth through a contact surface and limitation; the round shaft of the valve core is inserted into the upper valve seat and is in clearance fit with the upper valve seat, and the surface of the round shaft of the valve core, the O-shaped sealing ring and the lower valve seat form a sealing structure. The utility model discloses effectively realize hydraulic pressure case flow test, have simple structure, convenient operation and advantage such as the cost is lower.
Description
Technical Field
The utility model relates to a vehicle oil gas shock absorber test equipment.
Background
Oil-gas vibration absorbers have been used in mechanical devices such as automobiles and engineering vehicles. The advanced oil-gas damper assembly process generally requires that a valve core must be subjected to flow test before assembly, the flow cross-sectional area of a throttling port is adjusted on line according to test data, and then the throttling port is riveted. But the independent brand oil gas shock absorber in China is rarely produced, so that the dispersion of the damping force of the product is large, and the requirement of the middle-high end vehicle suspension is difficult to meet.
Therefore, the method and the means for effectively solving the problem of testing the valve core flow of the oil-gas damper at lower cost are provided, and the method and the means have important significance for improving the manufacturing level of the autonomous brand oil-gas damper.
Disclosure of Invention
In order to overcome the not enough of the unable effective test shock absorber case flow of prior art, the utility model provides a shock absorber case flow testing arrangement effectively realizes hydraulic pressure case flow test, has advantages such as simple structure, convenient operation and cost are lower.
The utility model provides a technical scheme that its technical problem adopted is:
a flow testing device for a valve core of a shock absorber comprises a lower valve seat, an oil groove, an upper valve seat, a valve cover and a valve core, wherein the inner cavity of the lower valve seat is a cylindrical hole, the inner cavity of the lower valve seat is fixedly connected with an external oil supply pipe, two stepped cylindrical holes with diameters of d1 and d2 are formed in the top of the lower valve seat, d1 is smaller than d2, a first sealing element is embedded in the cylindrical hole d2 of the lower valve seat, an annular groove for placing a second sealing element is formed in the bottom of the lower valve seat, a second sealing element is embedded between the annular groove in the bottom of the lower valve seat and the bottom surface of the oil groove, and the bottom of the lower valve seat is fixedly connected with the oil groove; the front end part of the upper valve seat is provided with two stepped cylindrical holes with the diameters of d1 and d3, the d1 cylindrical hole of the upper valve seat is aligned with the d1 cylindrical hole of the lower valve seat, the bottom of the upper valve seat is tightly connected with the top surface of the lower valve seat, and two side surfaces of the upper valve seat are provided with guide rail grooves in the horizontal direction;
the cross section of the valve cover is in an inverted U shape, two inner sides of the inverted U shape of the valve cover are provided with guide rails in the horizontal direction, the two inner side guide rails of the valve cover extend to the rear part of the inverted U-shaped body, the two inner side guide rails of the valve cover are matched with two side guide rail grooves of the upper valve seat, and the valve cover can only move back and forth under the limitation of a contact surface; the circular shaft of the valve core is inserted into the d1 cylindrical hole of the upper valve seat and the d1 cylindrical hole of the lower valve seat and is in clearance fit with the d1 cylindrical hole of the upper valve seat and the d1 cylindrical hole of the lower valve seat, and the surface of the circular shaft of the valve core, the second sealing element and the d2 cylindrical surface of the lower valve seat form a sealing structure.
Further, the inner cavity of the lower valve seat is fixedly connected with an external oil supply pipe through a threaded opening, the bottom of the lower valve seat is fixedly connected with the oil groove through a screw, and the bottom of the upper valve seat is fixedly connected with the top surface of the lower valve seat through a screw.
Still further, the first sealing element and the second sealing element are both O-shaped sealing rings;
furthermore, a plurality of O-shaped sealing rings are embedded in the d2 cylindrical hole of the lower valve seat, and the O-shaped sealing rings are separated by spacers.
The beneficial effects of the utility model are that: the hydraulic valve core flow testing device has the advantages of being simple in structure, convenient to operate, low in cost and the like.
Drawings
FIG. 1 is a schematic front view of one embodiment of a damper spool flow testing device.
FIG. 2 is a side view of a schematic of one embodiment of a damper spool flow testing device.
Fig. 3 is a partial sectional view of fig. 2, in which the valve housing 4 has been moved to the rear of the upper valve seat 3.
Fig. 4 is a partial cross-sectional enlarged view of fig. 2.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 4, the flow testing device for the valve core of the shock absorber comprises a lower valve seat 1, an oil groove 2, an upper valve seat 3, a valve cover 4 and a valve core 5, wherein the inner cavity of the lower valve seat 1 is a cylindrical hole, the inner cavity of the lower valve seat 1 is also fixedly connected with an external oil supply pipe through a threaded port 9, the top of the lower valve seat 1 is provided with two stepped cylindrical holes with diameters of d1 and d2, d1< d2, and a first O-shaped sealing ring 7 is embedded in the cylindrical hole d2 of the lower valve seat 1;
the bottom of the lower valve seat 1 is provided with an annular groove for placing a second O-shaped sealing ring, the second O-shaped sealing ring 6 is embedded between the annular groove at the bottom of the lower valve seat 1 and the bottom surface of the oil tank 2, and the bottom of the lower valve seat 1 is fixedly connected with the oil tank 2 through a screw;
the front end part of the upper valve seat 3 is provided with two stepped cylindrical holes with the diameters of d1 and d3, the d1 cylindrical hole of the upper valve seat 3 is aligned with the d1 cylindrical hole of the lower valve seat 1, the bottom of the upper valve seat is fixedly connected with the top surface of the lower valve seat 1 through a screw, and two side surfaces of the upper valve seat 3 are provided with guide rail grooves in the horizontal direction;
the cross section of the valve cover 4 is in an inverted U shape, two inner sides of the inverted U shape of the valve cover 4 are provided with guide rails in the horizontal direction, the two inner side guide rails of the valve cover 4 extend to the rear part of the inverted U shape, the two inner side guide rails of the valve cover 4 are matched with two side guide rail grooves of the upper valve seat 3, and the valve cover 4 can only move back and forth under the limitation of contact surfaces 11 and 12;
the circular shaft of the valve core 5 is inserted into the d1 cylindrical hole of the upper valve seat 3 and the d1 cylindrical hole of the lower valve seat 1, and is in clearance fit with the d1 cylindrical hole of the upper valve seat 3 and the d1 cylindrical hole of the lower valve seat 1, and the surface of the circular shaft of the valve core 5, the second O-shaped sealing ring 6 and the d2 cylindrical surface of the lower valve seat 1 form a sealing structure.
A plurality of O-shaped sealing rings 7 are embedded in a d2 cylindrical hole of the lower valve seat 1, and the O-shaped sealing rings 7 are separated by spacers 8.
The working principle of the embodiment is as follows: fig. 1, 2 and 4 show the device in a test mode of operation in relation to each other. When the test is started, external oil enters the inner cavity of the lower valve seat 1 from the oil inlet 9 through the oil supply pipe, flows into the inner hole at the lower end part of the circular shaft of the valve core 5, flows out from the small hole at the upper end of the valve core 5, and enters the oil groove 2, and arrows in fig. 3 and 4 show the circulation route of the oil. At the moment, the valve core 5 is jacked up by the pressure oil, and the upper end of the valve core is tightly jacked at the top of the inverted U-shaped valve cover 4.
Because the valve core 5 generates resistance to oil, pressure difference is formed between the inner cavity of the lower valve seat 1 and the outside of the oil outlet hole at the upper end of the valve core 5, and the damping force of the valve core 5 can be converted by measuring the pressure difference and the oil flow, thereby achieving the purpose of testing.
The O-shaped sealing ring 6 prevents oil from leaking from the bottom of the lower valve seat 1, and the O-shaped sealing ring 7 prevents oil from leaking from the matching surfaces of the circular shaft of the valve core 5 and the d1 circular holes of the lower valve seat 1 and the upper valve seat 3, so that high testing precision is ensured.
After the test of one workpiece is finished, the hydraulic system releases the pressure to eliminate the tightening force of the valve core 5 tightly pressed on the inverted U-shaped top of the valve cover 4, the valve cover 4 is manually moved backwards, the valve core 5 (i.e. the workpiece) is taken down, the next workpiece to be tested is replaced, and the continuous production can be realized by the circulation.
The automatic test of pressure and flow in the test process is completed by a hydraulic and measurement and control system, and is out of the scope of the application.
Claims (4)
1. A flow testing device for a valve core of a shock absorber is characterized by comprising a lower valve seat, an oil groove, an upper valve seat, a valve cover and a valve core, wherein the inner cavity of the lower valve seat is a cylindrical hole, the inner cavity of the lower valve seat is fixedly connected with an external oil supply pipe, two stepped cylindrical holes with diameters of d1 and d2 are formed in the top of the lower valve seat, d1 is less than d2, a first sealing element is embedded in the d2 cylindrical hole of the lower valve seat, an annular groove for placing a second sealing element is formed in the bottom of the lower valve seat, a second sealing element is embedded between the annular groove in the bottom of the lower valve seat and the bottom surface of the oil groove, and the bottom of the lower valve seat is fixedly connected with the oil groove; the front end part of the upper valve seat is provided with two stepped cylindrical holes with the diameters of d1 and d3, the d1 cylindrical hole of the upper valve seat is aligned with the d1 cylindrical hole of the lower valve seat, the bottom of the upper valve seat is tightly connected with the top surface of the lower valve seat, and two side surfaces of the upper valve seat are provided with guide rail grooves in the horizontal direction;
the cross section of the valve cover is in an inverted U shape, two inner sides of the inverted U shape of the valve cover are provided with guide rails in the horizontal direction, the two inner side guide rails of the valve cover extend to the rear part of the inverted U-shaped body, the two inner side guide rails of the valve cover are matched with two side guide rail grooves of the upper valve seat, and the valve cover can only move back and forth under the limitation of a contact surface; the circular shaft of the valve core is inserted into the d1 cylindrical hole of the upper valve seat and the d1 cylindrical hole of the lower valve seat and is in clearance fit with the d1 cylindrical hole of the upper valve seat and the d1 cylindrical hole of the lower valve seat, and the surface of the circular shaft of the valve core, the second sealing element and the d2 cylindrical surface of the lower valve seat form a sealing structure.
2. The device for testing the flow of the valve core of the shock absorber as claimed in claim 1, wherein the inner cavity of the lower valve seat is further fastened and connected with an external oil supply pipe through a threaded port, the bottom of the lower valve seat is fastened and connected with the oil groove through a screw, and the bottom of the upper valve seat is fastened and connected with the top surface of the lower valve seat through a screw.
3. The damper poppet flow testing device of claim 1 or 2, wherein the first and second seals are O-rings.
4. The flow testing device of the valve core of the shock absorber as claimed in claim 1 or 2, wherein a plurality of O-shaped sealing rings are embedded in the d2 cylindrical hole of the lower valve seat, and the O-shaped sealing rings are separated by a spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921737979.5U CN210603892U (en) | 2019-10-16 | 2019-10-16 | Shock absorber case flow testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921737979.5U CN210603892U (en) | 2019-10-16 | 2019-10-16 | Shock absorber case flow testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210603892U true CN210603892U (en) | 2020-05-22 |
Family
ID=70695371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921737979.5U Expired - Fee Related CN210603892U (en) | 2019-10-16 | 2019-10-16 | Shock absorber case flow testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210603892U (en) |
-
2019
- 2019-10-16 CN CN201921737979.5U patent/CN210603892U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 Termination date: 20211016 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |