CN2649840Y - Double-acting piston multi-stage hydraulic cylinder - Google Patents
Double-acting piston multi-stage hydraulic cylinder Download PDFInfo
- Publication number
- CN2649840Y CN2649840Y CN 03248999 CN03248999U CN2649840Y CN 2649840 Y CN2649840 Y CN 2649840Y CN 03248999 CN03248999 CN 03248999 CN 03248999 U CN03248999 U CN 03248999U CN 2649840 Y CN2649840 Y CN 2649840Y
- Authority
- CN
- China
- Prior art keywords
- piston
- plug
- piston rod
- rod assembly
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a double-acting piston multi-stage hydraulic cylinder technology, which mainly comprises a piston pole assembly (1), a guide sleeve, a piston pole assembly (2), a piston pole assembly (3), a cylinder assembly, a guide ring, a piston, a pole sealing element, a shaft sealing element, a pole flexible stop ring and a lubricating centripetal joint bearing. An oil hole A and an oil hole B are arranged on the piston pole assembly (1). The inlay assembled sealing element on the piston pole assembly (2) and piston pole assembly (3) consists of a screw plug and a transition plug. Through holes are arranged in the screw plug and the transition plug. As the transition plug adopts special material, after the transition plug and the screw plug are assembled in the hole and are processed with the piston pole assemblies (2) (3), the sealing element will not be damaged when traveling through the small hole in the transition plug. When the utility model is used, the sealing element will not be scraped and damaged by the instant high pressure in the piston pole. The utility model has simple structur, and the service life of the double-acting piston multi-stage hydraulic cylinder is prolonged.
Description
Technical field
The utility model relates to hydraulic transmission technology field in the automatic control of machinery, relates in particular to double-acting piston multistage hydraulic cylinder technology.
Background technique
The double-acting piston multistage hydraulic cylinder that behind refuse collection vehicle, uses in the push pedal of railway carriage or compartment, the via structure of its Sealing is to adopt circular groove to add two chamfers to realize, this kind structure is when pistons work, when the High Pressure Difference fragile Sealing that in a flash form of Sealing, influence the working life of Sealing by oilhole.
Summary of the invention
The purpose of this utility model is the transit plug that adopts a kind of special material to make, and makes Sealing smoothly by the hole, can damage not arranged to Sealing, has prolonged the working life of oil hydraulic cylinder.
The utility model mainly comprises piston rod assembly (), guide sleeve, piston rod assembly (two), piston rod assembly (three), cylinder assembly, guide ring, piston, hole Sealing, Wellendichtring, circlip for hole and self-lubricating plain radial bearing, on piston rod assembly (), be provided with oilhole A and oilhole B, the combination seal of inlaying on piston rod assembly (two) and the piston rod assembly (three) is made up of plug screw and transit plug, is provided with through hole in plug screw and the transit plug.
Because the combination seal of inlaying of the present utility model is made up of plug screw and transit plug, transit plug adopts special material, therefore when transit plug is processed with piston rod assembly (two), (three) endoporus in plug screw is assemblied in the hole again after, when Sealing passes through aperture on the transit plug, can not cut bad.The utility model in actual use, Sealing can not be scratched owing to the instantaneous pressure difference in the piston rod.
The utility model is simple in structure, has prolonged the working life of Double Acting Telescopic Hydraulic Cylinder.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the A-A sectional view of Fig. 1.
Among the figure, the 1st, piston rod assembly (), the 2nd, guide sleeve, the 3rd, piston rod assembly (two), the 4th, piston rod assembly (three), the 5th, cylinder assembly, the 6th, guide ring, the 7th, hole Sealing, the 8th, piston, the 9th, circlip for hole, the 10th, self-lubricating plain radial bearing, the 11st, Wellendichtring, the 12nd, the hole Steel Cable Baffle Ring, the 13rd, inlay combination seal, the 14th, plug screw, the 15th, transit plug.
Specific embodiment
End at piston rod assembly () 1 is provided with oil inlet and outlet A (rodless cavity) and oil inlet and outlet B (rod chamber), self-lubricating plain radial bearing 10 and circlip for hole 9, is threaded with piston 8 at the other end of piston rod ().
On piston rod assembly (two) 3 and piston rod assembly (three) 4, also be provided with the hole with Steel Cable Baffle Ring 14, the hole is with Sealing 7, Wellendichtring 11 and inlay combination seal 13, inlay combination seal 13 and form by plug screw 14 and transit plug 15.
When oilhole A mouth enters pressure oil, piston rod assembly (three) 4 stretches out, piston rod assembly (one) 1 and piston rod assembly (two) 3 stretch out cylinder assembly 5 in the hole under with the drive of Steel Cable Baffle Ring 12 simultaneously, and at this moment, the oil of rod chamber passes through the aperture of transit plug 15 and discharges at oilhole B mouth.When piston rod assembly (three) 4 ran to first order stroke, piston rod assembly (two) 3 began to stretch out, and at this moment the same aperture by transit plug 15 of the oil of rod chamber is discharged at oilhole B mouth.When piston rod assembly (two) 3 moved to second level stroke, piston rod assembly (two) 3 brought into operation to third level stroke; Oilhole B mouth enters pressure oil, piston rod assembly (one) 1 is retracted to third level stroke, this moment, the oil inlet hole of piston rod assembly () 1 was connected with transit plug 15 oilholes of piston rod assembly (two) 3, the oil of rodless cavity is discharged by oilhole A mouth, the oilhole back piston bar assembly (two) 3 that is connected is retracted to second level stroke, when transit plug 15 oilholes of piston rod assembly (two) 3 were connected with transit plug oilhole 15 on the piston rod assembly (three) 4, piston rod assembly (three) 4 was retracted to first order stroke.
Claims (1)
1, double-acting piston multistage hydraulic cylinder, mainly comprise piston rod assembly (), guide sleeve, piston rod assembly (two), piston rod assembly (three), cylinder assembly, guide ring, piston, hole Sealing, Wellendichtring, circlip for hole and self-lubricating plain radial bearing, it is characterized in that piston rod assembly () is provided with oilhole A and oilhole B, the combination seal of inlaying on piston rod assembly (two) and the piston rod assembly (three) is made up of plug screw and transit plug, is provided with through hole in plug screw and the transit plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03248999 CN2649840Y (en) | 2003-09-29 | 2003-09-29 | Double-acting piston multi-stage hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03248999 CN2649840Y (en) | 2003-09-29 | 2003-09-29 | Double-acting piston multi-stage hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2649840Y true CN2649840Y (en) | 2004-10-20 |
Family
ID=34327452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03248999 Expired - Fee Related CN2649840Y (en) | 2003-09-29 | 2003-09-29 | Double-acting piston multi-stage hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2649840Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562710A (en) * | 2012-02-13 | 2012-07-11 | 莱州兴达液压机械有限公司 | Secondary oil cylinder of wood splitting machine |
| CN103883584A (en) * | 2014-04-16 | 2014-06-25 | 张振宇 | Heavy duty rotation composite multi-reciprocating cylinder device |
-
2003
- 2003-09-29 CN CN 03248999 patent/CN2649840Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562710A (en) * | 2012-02-13 | 2012-07-11 | 莱州兴达液压机械有限公司 | Secondary oil cylinder of wood splitting machine |
| CN103883584A (en) * | 2014-04-16 | 2014-06-25 | 张振宇 | Heavy duty rotation composite multi-reciprocating cylinder device |
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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: 20041020 Termination date: 20091029 |