CN201071852Y - Compound hydraulic cylinder - Google Patents
Compound hydraulic cylinder Download PDFInfo
- Publication number
- CN201071852Y CN201071852Y CNU2007200639608U CN200720063960U CN201071852Y CN 201071852 Y CN201071852 Y CN 201071852Y CN U2007200639608 U CNU2007200639608 U CN U2007200639608U CN 200720063960 U CN200720063960 U CN 200720063960U CN 201071852 Y CN201071852 Y CN 201071852Y
- Authority
- CN
- China
- Prior art keywords
- hydraulic cylinder
- piston
- cylinder barrel
- cylinder
- positioning
- 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
- 150000001875 compounds Chemical class 0.000 title 1
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims description 7
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000002828 fuel tank Substances 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241001133184 Colletotrichum agaves Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- Actuator (AREA)
Abstract
The utility model discloses a multiple hydraulic cylinder. The rear section of a cylinder barrel (5) is extended; a positioning oil cylinder barrel (11) is positioned in the extending section of the cylinder barrel (5); a rear cover (12) and the back wall of the positioning oil cylinder barrel (11) are fastened on the rear end of the cylinder barrel (5); a positioning piston (10) is positioned in the positioning oil cylinder barrel (11); the rear cover (12) is connected with a hydraulic oil source. The utility model has functions of a single-bar hydraulic cylinder with double effects and a single-bar hydraulic cylinder with single effect in one hydraulic cylinder structure at the same time; an action element (1) driven by the hydraulic cylinder can work within the predetermined travel range through the stepping and fixation for the positioning piston (10); the action element (1) returns back to the original position (that is the maintenance position of the action element) by the way that hydraulic oil is communicated to an oil box (14) in the positioning oil cylinder barrel (11) under the condition that a piston rod (4) of the hydraulic cylinder is driven to move backward at the same time, thus meeting the position requirement for the action element when in equipment work and equipment maintenance. In addition, the structure of the utility model is simple.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder of engineering machinery.
Background technique
Engineering machinery mostly is the single pole double-acting hydraulic cylinder with oil hydraulic cylinder, length of piston travel equals the working stroke length of executive component, stroke immobilizes, and when in the piston arrives cylinder during former and later two limit positions, the executive component that connects on the piston rod also can only arrive former and later two limit positions.The single pole single-action hydraulic cylinder links to each other with two position three-way valve usually, and single pole single-action hydraulic cylinder piston moves to the front end limit position under hydraulic oil promotes, and needs to rely on external force to promote the piston rod piston and just can get back to initial position.
Some equipment in engineering machinery (working in pipeline such as the concrete pumping equipment executive component) requires executive component to fall back on the position (as withdraw from pipeline outside) of rear end, maximal work position after more to safeguard carrying out plant maintenance when (as changing executive component), at this moment need with single pole double acting hydraulic cylinder piston stroke increase again on the basis of impulse stroke a backstroke (range of piston in hydraulic cylinder is greater than the impulse stroke of executive component) simultaneously must the work of assurance equipment the time piston only in the impulse stroke scope, move back and forth (impulse stroke is less than range).
Can realize this demand with single pole single-action hydraulic cylinder of Bolt Connection again on the end flange behind the single pole double-acting hydraulic cylinder cylinder barrel of stroke lengthening, the single pole single-action hydraulic cylinder links to each other with two position three-way valve, hydraulic oil promotion single pole single-action hydraulic cylinder piston steps is to the front end limit position and be fixed on this position (if the pressure of hydraulic oil is enough high), this moment, single pole single-action hydraulic cylinder piston rod stretched into the reach of the inner promotion of single pole double-acting hydraulic cylinder cylinder barrel single pole double-acting hydraulic cylinder piston position, and at this moment the stroke of single pole double-acting hydraulic cylinder shortens to working stroke (return stroke is by single pole single-action hydraulic cylinder piston rod dieback) by range.Switch two position three-way valve and make single pole single-action hydraulic cylinder and fuel tank connection, drive single pole double-acting hydraulic cylinder piston rod simultaneously and retreat, executive component can fall back on the position (initial position) of maximal work position after more.
The model utility content
Technical problem to be solved in the utility model provides a kind of simple in structure, and number of spare parts is few, and reliability of positioning is higher, makes, assembles and keep in repair all composite hydraulic cylinder easily.
In order to solve the problems of the technologies described above, the composite hydraulic cylinder that the utility model provides, comprise piston rod, cylinder barrel, piston and positioning piston, elongated segment behind the described cylinder barrel, in described cylinder barrel prolonged section, the positional cylinder tube is installed, rear end cover, positional cylinder tube rear wall are fastened on the described cylinder barrel rear end, and described positioning piston is installed in the described positional cylinder tube, and described rear end cover connects hydraulic oil source.
Adopt the composite hydraulic cylinder of technique scheme, piston in the cylinder barrel is installed on the piston rod by half snap ring, location ring set, screw, guide sleeve, preceding gland pass on the flanged surface that piston rod is installed in the cylinder barrel front end, positional cylinder tube rear wall, rear end cover are installed on the flanged surface of positional cylinder tube rear end, two position three-way valve connects rear end cover, the positional cylinder wound packages is equipped with positioning piston in the positional cylinder tube in cylinder barrel.Locate by positioning piston the piston rod rear end, and front end connects executive component.The utility model is because adopted said structure, needing can realize a single pole double-acting hydraulic cylinder and the function that the combination of single pole single-action hydraulic cylinder could realize, make the executive component location accurately, reliable operation, compare with the method for Bolt Connection combination simply with a single pole single-action hydraulic cylinder front end with a single pole double-acting hydraulic cylinder rear end simultaneously, this structure is a cylinder from external form on the whole, more simple on the structure, not only save attachment bolt, the piston positioning means of single pole single-action hydraulic cylinder front end (the general card key that adopts in piston nose location, card key cover, jump ring or forward flange end cap location), reduced number of spare parts, and reliability of positioning higher (piston positioning means can not come off), give and make, assembling and maintenance have all brought convenience.
In sum, the utility model will need a single pole double-acting hydraulic cylinder and single pole single-action hydraulic cylinder bolt flange to connect the function that combination could realize to realize on a composite hydraulic cylinder, be a kind of simple in structure, number of spare parts is few, and reliability of positioning is higher, makes, assembles and keep in repair all composite hydraulic cylinder easily.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Accompanying drawing is the structural drawing of the utility model example.
Among the figure: gland before the 1-executive component, 2-, the 3-guide sleeve, the 4-piston rod, the 5-cylinder barrel, the 6-piston, 7-half snap ring, 8-locatees ring set, 9-screw, 10-positioning piston, 11-positional cylinder tube, 12-rear end cover, 13-two position three-way valve, 14-fuel tank
Embodiment
Referring to accompanying drawing, piston 6 in the cylinder barrel 5 is installed on the piston rod 4 by half snap ring 7, location ring set 8, screw 9, guide sleeve 3, preceding gland 2 pass on the flanged surface that piston rod 4 is installed in cylinder barrel 5 front ends, cylinder barrel 5 back elongated segments, positional cylinder tube 11 is contained in the cylinder barrel 5, bolt passes rear end cover 12 and positional cylinder tube 11 rear walls are tightened on the flange of cylinder barrel 5 rear ends, positioning piston 10 is housed in the positional cylinder tube 11, two position three-way valve 13 connects rear end cover 12, piston rod 4 rear ends are by positioning piston 10 location, and front end connects executive component 1.
Referring to accompanying drawing, generally, two position three-way valve 13 is in position, a left side, hydraulic oil enters positional cylinder tube 11 by two position three-way valve 13, rear end cover 12, promoting positioning piston 10, piston rod 4 moves forward, be fixed on positional cylinder tube 11 front positions until positioning piston 10, executive component 1 moves to the initial position of working state under the drive of piston rod 4, because positioning piston 10 positions are fixing by high-pressure and hydraulic oil, executive component 1 is being worked in forward stroke range under the driving of hydraulic cylinder piston 6.
Switch two position three-way valve 13 and make it be in right position, the hydraulic oil in the positional cylinder tube 11 flows into fuel tank 14 by rear end cover 12, two position three-way valve 13; Hydraulic cylinder piston 6 retreats under the driving of hydraulic oil simultaneously, and when piston rod 4 promotion positioning pistons 10 retreated to positional cylinder tube 11 back-end locations, piston rod 4 drive executive components 1 fall back on outside the pipeline to be safeguarded.
Positional cylinder tube 11 has adopted illustrated tubular structure directly to be contained in the cylinder barrel 5, bolt passes rear end cover 12 and positional cylinder tube 11 rear walls are tightened on the flange of cylinder barrel 5 rear ends, compare with the oil hydraulic cylinder of two Bolt Connection combination (a single pole double-acting hydraulic cylinder rear end with a single pole single-action hydraulic cylinder front end Bolt Connection) structure, not only save attachment bolt, and this structure still is a cylinder from external form on the whole; Be an integral body on positional cylinder tube 11 antethecas and the stack shell structure simultaneously, realized location by antetheca to positioning piston 10, save the piston positioning means (general card key, card key cover, jump ring or the forward flange end cap location of adopting, piston nose location) of common single pole single-action hydraulic cylinder front end, reduced number of spare parts, and location reliable (antetheca location), the fault of having avoided positioning device to come off and bring is given and is made, assembles and keep in repair and all brought convenience.
Claims (1)
1. composite hydraulic cylinder, comprise piston rod (4), cylinder barrel (5), piston (6) and positioning piston (10), it is characterized in that: described cylinder barrel (5) back elongated segment, in described cylinder barrel (5) prolonged section, positional cylinder tube (11) is installed, rear end cover (12), positional cylinder tube (11) rear wall are fastened on described cylinder barrel (5) rear end, described positioning piston (10) is installed in the described positional cylinder tube (11), and described rear end cover (12) connects hydraulic oil source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200639608U CN201071852Y (en) | 2007-07-27 | 2007-07-27 | Compound hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200639608U CN201071852Y (en) | 2007-07-27 | 2007-07-27 | Compound hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201071852Y true CN201071852Y (en) | 2008-06-11 |
Family
ID=39550410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200639608U Expired - Fee Related CN201071852Y (en) | 2007-07-27 | 2007-07-27 | Compound hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201071852Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857586A (en) * | 2011-09-09 | 2014-06-11 | 实用动力集团 | Marine shell door including hydraulic actuator unit |
| CN103994117A (en) * | 2014-05-16 | 2014-08-20 | 中联重科股份有限公司 | Hydraulic oil cylinder and concrete pumping equipment |
-
2007
- 2007-07-27 CN CNU2007200639608U patent/CN201071852Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857586A (en) * | 2011-09-09 | 2014-06-11 | 实用动力集团 | Marine shell door including hydraulic actuator unit |
| CN103994117A (en) * | 2014-05-16 | 2014-08-20 | 中联重科股份有限公司 | Hydraulic oil cylinder and concrete pumping equipment |
| CN103994117B (en) * | 2014-05-16 | 2016-07-06 | 中联重科股份有限公司 | Hydraulic oil cylinder and concrete pumping equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOL Free format text: FORMER NAME: CHANG SHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Yuelu District City, Hunan province 410205 Changsha Lugu Road No. 677 ZOOMLION Lugu Industrial Park Patentee after: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Address before: Yuelu District City, Hunan province 410205 Changsha Lugu Road No. 677 ZOOMLION Lugu Industrial Park Patentee before: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080611 Termination date: 20140727 |
|
| EXPY | Termination of patent right or utility model |