CN104454767A - Multi-stage hydraulic cylinder - Google Patents
Multi-stage hydraulic cylinder Download PDFInfo
- Publication number
- CN104454767A CN104454767A CN201310438708.0A CN201310438708A CN104454767A CN 104454767 A CN104454767 A CN 104454767A CN 201310438708 A CN201310438708 A CN 201310438708A CN 104454767 A CN104454767 A CN 104454767A
- Authority
- CN
- China
- Prior art keywords
- piston
- pin bushing
- guide pin
- hydraulic cylinder
- bonnet
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
Abstract
The invention discloses a multi-stage hydraulic cylinder, and relates to a structure of the hydraulic cylinder. The multi-stage hydraulic cylinder comprises a cylinder body. The rear end of the cylinder body is fixedly connected with a rear cover. The rear cover is provided with a rear oil opening. The front end of the cylinder body is connected with a first front guide sleeve. A first piston and a fist piston rod are arranged in the cylinder body. The front end of the first piston rod is connected with a second front guide sleeve. A second piston is arranged in the first piston. A third piston is arranged in the first piston rod. The third piston is connected with a third piston rod. The front side in the rear cover is provided with a rear cover groove. The rear cover groove is communicated with the rear oil opening. The rear end of the second piston is provided with a rear buffering block in an integrated mode. The rear buffering block can be detachably arranged in the rear cover groove. The front end of the third piston is provided with a front buffering block in an integrated mode. The rear end of the second front guide sleeve is provided with a front guide sleeve groove matched with the front buffering block. According to the multi-stage hydraulic cylinder, the rear buffering block is additionally arranged at the rear end of the second piston, the front buffering block is additionally arranged at the front end of the third piston, and the multi-stage hydraulic cylinder is stable to operate, callable of bearing larger unbalanced force (hybrid force), good in sealing effect and longer in service life.
Description
Technical field
The present invention relates in hydraulic system make bidirectional-movement perform machinery, there is the feature such as high pressure, high-stroke, particularly relate to the structure of oil hydraulic cylinder.
Background technique
Multistage hydraulic cylinder is applicable to the occasions such as engineering vehicle.Existing multistage hydraulic cylinder mainly comprises cylinder barrel, the rear end of cylinder barrel is fixedly connected with bonnet, bonnet is arranged rear hydraulic fluid port, the front end of cylinder barrel arranges front hydraulic fluid port, guide pin bushing before the front end connection first of cylinder barrel, first piston and first piston bar are set in cylinder barrel, the rear end of first piston bar is connected with first piston, before the front end of first piston bar is set in described first in guide pin bushing, guide pin bushing before the front end connection second of first piston bar, second piston is set in first piston, 3rd piston is set in first piston bar, 3rd piston is arranged on the front side of the second piston, 3rd piston connects the 3rd piston rod, before the front end of the 3rd piston rod is set in second in guide pin bushing.The multistage hydraulic cylinder of this structure is large without stroke buffering, impact force, and working life is short.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of multistage hydraulic cylinder with stroke buffering is provided.
The object of the present invention is achieved like this: multistage hydraulic cylinder, comprise cylinder barrel, the rear end of cylinder barrel is fixedly connected with bonnet, bonnet is arranged rear hydraulic fluid port, the front end of cylinder barrel arranges front hydraulic fluid port, guide pin bushing before the front end connection first of cylinder barrel, first piston and first piston bar are set in cylinder barrel, the rear end of first piston bar is connected with first piston, before the front end of first piston bar is set in described first in guide pin bushing, guide pin bushing before the front end connection second of first piston bar, second piston is set in first piston, 3rd piston is set in first piston bar, 3rd piston is arranged on the front side of the second piston, 3rd piston connects the 3rd piston rod, before the front end of the 3rd piston rod is set in second in guide pin bushing, front side in described bonnet arranges bonnet groove, bonnet groove is connected with described rear hydraulic fluid port, the rear end disjunctor of the second piston arranges rear buffer stopper, rear buffer stopper is detachable to be arranged in bonnet groove, the front end disjunctor of described 3rd piston arranges front buffer stopper, and before described second, the rear end of guide pin bushing arranges the front guide pin bushing groove matched with front buffer stopper.
The present invention by buffer stopper after the rear end of the second piston installs additional, before the front end of the 3rd piston installs additional buffer stopper, effectively avoid and collision between front guide pin bushing and bonnet, operate steadily, larger unbalanced force (mixing force) can be carried, good sealing effect, working life is more permanent.
In order to make oil cylinder have centre pilot effect, described second piston is fixedly connected with guide rod, guide rod is set in described 3rd piston, the 3rd piston rod.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
In figure, guide pin bushing before 1 second, guide pin bushing before 2 first, hydraulic fluid port before 3,4 cylinder barrels, 5 first piston bars, 6 the 3rd piston rods, 7 guide rods, buffer stopper before 8,9 the 3rd pistons, 10 first pistons, 11 second pistons, hydraulic fluid port after 12,13 bonnets, buffer stopper after 14,15 bonnet grooves, guide pin bushing groove before 16.
Embodiment
As shown in Figure 1, for multistage hydraulic cylinder, comprise cylinder barrel 4, the rear end of cylinder barrel 4 is fixedly connected with bonnet 13, bonnet 13 is arranged rear hydraulic fluid port 12, the front end of cylinder barrel 4 arranges front hydraulic fluid port 3, guide pin bushing 2 before the front end connection first of cylinder barrel 4, first piston 10 and first piston bar 5 are set in cylinder barrel 4, the rear end of first piston bar 5 is connected with first piston 10, before the front end of first piston bar 5 is set in first in guide pin bushing 2, guide pin bushing 1 before the front end connection second of first piston bar 5, second piston 11 is set in first piston 10, 3rd piston 9 is set in first piston bar 5, 3rd piston 9 is arranged on the front side of the second piston 11, 3rd piston 9 connects the 3rd piston rod 6, before the front end of the 3rd piston rod 6 is set in second in guide pin bushing 1, second piston 11 is fixedly connected with guide rod 7, guide rod 7 is set in described 3rd piston 9, in 3rd piston rod 6.Front side in bonnet 13 arranges bonnet groove 15, and bonnet groove 15 is connected with rear hydraulic fluid port 12, and the rear end disjunctor of the second piston 11 arranges rear buffer stopper 14, and rear buffer stopper 14 is detachable to be arranged in bonnet groove 15.The front end disjunctor of the 3rd piston 9 arranges front buffer stopper 8, and before second, the rear end of guide pin bushing 1 arranges the front guide pin bushing groove 16 matched with front buffer stopper 8.
Claims (2)
1. multistage hydraulic cylinder, comprise cylinder barrel, the rear end of cylinder barrel is fixedly connected with bonnet, bonnet is arranged rear hydraulic fluid port, the front end of cylinder barrel arranges front hydraulic fluid port, guide pin bushing before the front end connection first of cylinder barrel, first piston and first piston bar are set in cylinder barrel, the rear end of first piston bar is connected with first piston, before the front end of first piston bar is set in described first in guide pin bushing, guide pin bushing before the front end connection second of first piston bar, second piston is set in first piston, 3rd piston is set in first piston bar, 3rd piston is arranged on the front side of the second piston, 3rd piston connects the 3rd piston rod, before the front end of the 3rd piston rod is set in second in guide pin bushing, it is characterized in that: the front side in described bonnet arranges bonnet groove, bonnet groove is connected with described rear hydraulic fluid port, the rear end disjunctor of the second piston arranges rear buffer stopper, rear buffer stopper is detachable to be arranged in bonnet groove, the front end disjunctor of described 3rd piston arranges front buffer stopper, and before described second, the rear end of guide pin bushing arranges the front guide pin bushing groove matched with front buffer stopper.
2. multistage hydraulic cylinder according to claim 1, is characterized in that: described second piston is fixedly connected with guide rod, and guide rod is set in described 3rd piston, the 3rd piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310438708.0A CN104454767A (en) | 2013-09-25 | 2013-09-25 | Multi-stage hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310438708.0A CN104454767A (en) | 2013-09-25 | 2013-09-25 | Multi-stage hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104454767A true CN104454767A (en) | 2015-03-25 |
Family
ID=52901342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310438708.0A Pending CN104454767A (en) | 2013-09-25 | 2013-09-25 | Multi-stage hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104454767A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736511A (en) * | 2016-04-18 | 2016-07-06 | 苏州市汉诺威升降台有限公司 | Hydraulic cylinder used for elevator |
-
2013
- 2013-09-25 CN CN201310438708.0A patent/CN104454767A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736511A (en) * | 2016-04-18 | 2016-07-06 | 苏州市汉诺威升降台有限公司 | Hydraulic cylinder used for elevator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103256275A (en) | Quick double-acting hydraulic cylinder | |
| CN203532406U (en) | Multi-stage double-action reinforced hydraulic cylinder | |
| CN202732536U (en) | Multiple-force cylinder structure | |
| CN102705291A (en) | Oil cylinder capable of passing oil by piston rod | |
| CN104389826A (en) | Novel reinforcement connector clamping device and application method thereof | |
| CN204610417U (en) | A kind of moving platform symmetrical servo-cylinder of single rod | |
| CN104454767A (en) | Multi-stage hydraulic cylinder | |
| CN105650059A (en) | Double-acting two-stage hydraulic cylinder | |
| CN202690578U (en) | Rapid oil cylinder | |
| CN203516281U (en) | Multistage hydraulic cylinder | |
| CN203374557U (en) | Rapid oil hydraulic cylinder | |
| CN102852899A (en) | Vertical oil cylinder | |
| CN102889262A (en) | Combined type hydraulic cylinder with floating cylinder barrel | |
| CN204692230U (en) | There is the oil cylinder of two step velocitys | |
| CN202612248U (en) | Combined-type hydraulic cylinder | |
| CN204553400U (en) | Novel double-acting single-piston rod formula oil hydraulic cylinder | |
| CN204403041U (en) | A kind of oil cylinder | |
| CN203543037U (en) | Seal structure for double-order pre-plasticized injection device | |
| CN203809408U (en) | Oil cylinder with front lug ring and rear lug ring | |
| CN104019077A (en) | Oil cylinder with front lug and rear lug | |
| CN102865266A (en) | Front telescopic oil cylinder of cement pump truck | |
| CN203474362U (en) | Hydraulic jack for large tonnage equal thrust engineering | |
| CN204200749U (en) | Oil cylinder | |
| CN104863923A (en) | Oil cylinder with two-level stretching-out speed | |
| CN203374551U (en) | Standard cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |
|
| WD01 | Invention patent application deemed withdrawn after publication |