CN2649841Y - Double-acting piston type multi-stage hydraulic cylinder - Google Patents
Double-acting piston type multi-stage hydraulic cylinder Download PDFInfo
- Publication number
- CN2649841Y CN2649841Y CN 03278877 CN03278877U CN2649841Y CN 2649841 Y CN2649841 Y CN 2649841Y CN 03278877 CN03278877 CN 03278877 CN 03278877 U CN03278877 U CN 03278877U CN 2649841 Y CN2649841 Y CN 2649841Y
- Authority
- CN
- China
- Prior art keywords
- piston rod
- thick bamboo
- bar tube
- hydraulic cylinder
- piston
- 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
- 238000007789 sealing Methods 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 4
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 4
- 241001330002 Bambuseae Species 0.000 abstract 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 4
- 239000011425 bamboo Substances 0.000 abstract 4
- 230000000694 effects Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000011229 interlayer Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
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- Actuator (AREA)
Abstract
The utility model relates to a hydraulic drive technical field among the mechanical automatic control especially relates to two effect piston multistage hydraulic cylinder techniques, mainly includes cylinder subassembly, piston rod, uide bushing, and piston rod comprise an outer pole section of thick bamboo and an inner pole section of thick bamboo, and its both ends seal welds, and the symmetry equipartition has the convex oil groove of several on the surface of an inner pole section of thick bamboo, is equipped with the logical oil groove of several symmetry equipartition on an outer pole section of thick bamboo, makes up into there is the pole chamber, and no pole chamber is constituteed with piston rod in piston rod (one). The utility model discloses simple structure has reduced overall dimension, is favorable to the installation of multiple occasion, the cost is reduced.
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 Telescopic Hydraulic Cylinder of all using in many machinery, the oil canal of its rod chamber are to form the manufacture cost height with drilling deep hole.Another kind is to adopt the inner and outer pipes method of being separated by to form, because interior pipe and outer tube are separated by, its boundary dimension is bigger, makes the piston rod poor rigidity that is combined into.
Summary of the invention
It is little that the purpose of this utility model provides a kind of volume, low cost of manufacture, the double-acting piston multistage hydraulic cylinder of good rigidly.
The utility model mainly comprises cylinder assembly, piston rod, guide sleeve, piston rod (two) is made up of outer bar tube and interior bar tube, its two ends soldering and sealing, symmetry is evenly equipped with several circular arc oil grooves on interior bar tube outer surface, the bar tube is provided with the uniform logical oil groove of several symmetries outside, be combined into rod chamber, piston rod () is formed rodless cavity with piston rod (two).
Because the flexible size according to piston areas at different levels of piston rod is flexible successively from big to small, the oil of rod chamber is by the oil-feed of interlayer oil groove, and rodless cavity is by straight-through oil duct oil inlet and oil return.
Oil duct of the present utility model matches with interior bar tube by outer bar tube, and two ends soldering and sealing is provided with arc groove at interior bar tube outer surface and forms, and so multistage bar is formed integral body, has dwindled boundary dimension, has strengthened the rigidity of piston rod.
The utility model is simple in structure, has dwindled boundary dimension, helps the installation of multiple occasion, has reduced cost.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is Figure 1A-A sectional view.
Among the figure, the 1st, piston rod (), the 2nd, guide sleeve, the 3rd, cylinder assembly, the 4th, piston rod (two), the 5th, card key, the 6th, outer bar tube, the 7th, interior bar tube, the 8th, arc oil groove, the 9th, logical oil groove, the 10th, interlayer oil groove.
Specific embodiment
Be provided with oilhole B and oilhole C on cylinder assembly 3, guide sleeve 2 is connected with cylinder assembly 3 drive fits.The piston rod of being made up of outer bar tube 6 and interior bar tube 7 soldering and sealing (two) 4 and guide sleeve 2 and cylinder assembly 3 endoporus are movingly.Piston rod (one) 1 is formed rodless cavity for movingly with piston rod (two) 4 endoporus.
Be provided with 8 arc oil grooves 8 on the outer surface of interior bar tube 7, bar tube 6 is provided with 4 logical oil grooves 9 outside, forms oil duct through two ends soldering and sealing.When the B mouth entered pressure oil, the piston effective area on the piston rod (two) 4 was greater than the piston effective area on the piston rod () 1, and piston rod (two) 4 stretches out earlier, and piston rod () 1 stretches out again then.The oil of piston rod (two) 4 rod chambers is discharged at the C mouth by interlayer oil groove 10.When the C mouth enters pressure oil, piston rod (two) 4 withdrawal earlier that same piston area is big, piston rod () 1 is withdrawn again then, and at this moment, the oil in the rodless cavity is discharged at the B mouth.
Claims (1)
1, double-acting piston multistage hydraulic cylinder, mainly comprise cylinder assembly, piston rod, guide sleeve, it is characterized in that piston rod (two) is made up of outer bar tube and interior bar tube, its two ends soldering and sealing, symmetry is evenly equipped with several circular arc oil grooves on interior bar tube outer surface, the bar tube is provided with the uniform logical oil groove of several symmetries outside, is combined into rod chamber, and piston rod () is formed rodless cavity with piston rod (two).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03278877 CN2649841Y (en) | 2003-09-26 | 2003-09-26 | Double-acting piston type multi-stage hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03278877 CN2649841Y (en) | 2003-09-26 | 2003-09-26 | Double-acting piston type multi-stage hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2649841Y true CN2649841Y (en) | 2004-10-20 |
Family
ID=34332196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03278877 Expired - Fee Related CN2649841Y (en) | 2003-09-26 | 2003-09-26 | Double-acting piston type multi-stage hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2649841Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949398A (en) * | 2010-09-13 | 2011-01-19 | 三一重工股份有限公司 | Single-action hydraulic oil cylinder and paver with same |
| CN104088847A (en) * | 2014-07-02 | 2014-10-08 | 武汉华中天纬光电系统有限公司 | Hydraulic machine |
| CN105179370A (en) * | 2015-08-21 | 2015-12-23 | 蚌埠液力机械有限公司 | Single-acting welded type four-stage oil cylinder |
| CN106195261A (en) * | 2016-08-30 | 2016-12-07 | 四川悦安重工机械装备有限公司 | A kind of hollow piston rod assembly preventing contaminated liquid force feed |
| CN110043528A (en) * | 2019-03-20 | 2019-07-23 | 湖南双达机电有限责任公司 | Multi-stage expansion oil cylinder and crane |
-
2003
- 2003-09-26 CN CN 03278877 patent/CN2649841Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949398A (en) * | 2010-09-13 | 2011-01-19 | 三一重工股份有限公司 | Single-action hydraulic oil cylinder and paver with same |
| CN104088847A (en) * | 2014-07-02 | 2014-10-08 | 武汉华中天纬光电系统有限公司 | Hydraulic machine |
| CN105179370A (en) * | 2015-08-21 | 2015-12-23 | 蚌埠液力机械有限公司 | Single-acting welded type four-stage oil cylinder |
| CN106195261A (en) * | 2016-08-30 | 2016-12-07 | 四川悦安重工机械装备有限公司 | A kind of hollow piston rod assembly preventing contaminated liquid force feed |
| CN106195261B (en) * | 2016-08-30 | 2018-05-01 | 四川悦安重工机械装备有限公司 | A kind of hollow piston bar assembly for preventing pollution hydraulic oil |
| CN110043528A (en) * | 2019-03-20 | 2019-07-23 | 湖南双达机电有限责任公司 | Multi-stage expansion oil cylinder and crane |
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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: 20110926 |