CN108105198A - A kind of single-action hydraulic cylinder - Google Patents
A kind of single-action hydraulic cylinder Download PDFInfo
- Publication number
- CN108105198A CN108105198A CN201611049523.0A CN201611049523A CN108105198A CN 108105198 A CN108105198 A CN 108105198A CN 201611049523 A CN201611049523 A CN 201611049523A CN 108105198 A CN108105198 A CN 108105198A
- Authority
- CN
- China
- Prior art keywords
- piston
- hydraulic cylinder
- check valve
- rod
- cylinder barrel
- 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
- 238000007789 sealing Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000872 buffer Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 16
- 239000012530 fluid Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- 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
- F15B15/1423—Component parts; Constructional details
-
- 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
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Fluid-Damping Devices (AREA)
Abstract
A kind of single-action hydraulic cylinder, including cylinder barrel, piston rod, piston, the cylinder bottom loaded on cylinder barrel one end, the guide sleeve loaded on the cylinder barrel other end, inner cavity of cylinder is divided into rod chamber, rodless cavity by the piston loaded on piston rod one end, the piston rod other end stretches out cylinder barrel through guide sleeve, is arranged on piston and for connecting the check valve for balancing gas pressure in rod chamber and rodless cavity is housed at the passage of rod chamber and rodless cavity.When rod chamber pressure is more than rodless cavity pressure, check valve is opened, and when rodless cavity pressure is more than rod chamber pressure, closed check valve, piston rod continues to stretch out.The present invention can not only realize that rod chamber buffers, and can be to avoid external leakage at piston rod, and compared with prior art, the present invention has the characteristics of simple in structure, easy processing, production cost is low.
Description
Technical field
The invention belongs to hydraulic cylinder technical fields, and in particular to a kind of single-action hydraulic cylinder.
Background technology
At present, well known farm tractor single-action hydraulic cylinder, hydraulic cylinder rod chamber and rodless cavity intercommunication, rod chamber are deposited
Have hydraulic oil, be also easy to produce external leakage at piston rod, and piston rod movement to bottom without buffering, hydraulic cylinder is impacted larger.
The content of the invention
It is an object of the invention to overcome the shortcomings of above-mentioned hydraulic cylinder structure, and a kind of single-action hydraulic cylinder is provided, the liquid
Cylinder pressure not only can guarantee hydraulic cylinder rod chamber without hydraulic oil, will not generate external leakage at piston rod, and have always in rod chamber
Air according to mass balances equation, can mitigate piston motion to the impact to bottom during terminal.
The technical scheme is that：Including cylinder barrel, piston rod, piston, the cylinder bottom loaded on cylinder barrel one end, another loaded on cylinder barrel
Inner cavity of cylinder is divided into rod chamber, rodless cavity by the guide sleeve of one end, the piston loaded on piston rod one end, and the piston rod other end is through leading
Cylinder barrel is stretched out to set, is arranged on piston to connect and is equipped with to balance rod chamber and nothing at the passage of rod chamber and rodless cavity
The check valve of gas pressure in rod cavity.
The piston is step, and the small column portion being connected including big cylindrical portion, with big cylindrical portion, small column portion is equipped with outer
Screw thread；Described piston rod one end is equipped with blind hole, and the internal thread with the cooperation assembling of small column portion is equipped at the blind hole aperture.
The passage includes the check valve mounting hole being arranged on piston axis, is arranged at the oil duct of piston radial, oil duct
One end is connected with rod chamber, and the oil duct other end is connected with check valve mounting hole.
The check valve mounting hole is stepped hole, and the small hole portion being connected including big hole portion, with big hole portion, check valve is loaded on big
At hole portion.
The cylinder bottom is equipped with the oil duct being connected with external hydraulic system.
The sealed circle of piston outer wall is tightly connected with cylinder barrel.
The sealing ring is y-shaped ring.
The outside piston is equipped with the ring-shaped groove with sealing ring cooperation assembling.
The guide sleeve is fixed with cylinder barrel by elastic spring and circlip for shaft.
When rod chamber pressure is more than rodless cavity pressure, check valve is opened, when rodless cavity pressure is more than rod chamber pressure,
Closed check valve, piston rod continue to stretch out, and are buffered so as to fulfill rod chamber.It is sealed at inventive piston equipped with support ring, Y shape
Circle will not make rodless cavity fluid enter rod chamber, have sealing function without fluid always in rod chamber, can be to avoid piston
External leakage at bar.Compared with prior art, the present invention has simple in structure, and easy processing, production cost is low, there is buffering, and nothing leaks
The characteristics of leakage.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is that inventive piston bar stretches out structure diagram.
Fig. 3 is piston structure schematic diagram.
Fig. 4 is piston rod construction schematic diagram.
Specific embodiment
In Fig. 1,2, piston 2 is threadedly coupled with piston rod 3, and 2 outer circle of piston is provided with annular seal groove 7, and annular seal groove 7 fills
There is Y shape circle 12, prevent rodless cavity fluid from entering rod chamber by 6 inner wall of cylinder barrel and 2 outer circle gap of piston.It is bored in 2 outer circle of piston
There are oil duct 9 and check valve mounting hole 8, check valve mounting hole 8 is stepped hole, and for installing check valve 13, one end is used to connect for one end
Oil canal 9 and piston rod blind hole（Abbreviation blind hole）10.Piston rod blind hole 10 is arranged at 3 one end of piston rod, and piston rod blind hole 10 is logical
The check valve mounting hole 8, oil duct 9 and hydraulic cylinder rod chamber 11 for crossing piston 2 are logical.Piston rod blind hole 10 is stepped hole by two parts group
Into unthreaded hole portion and the threaded portion of unthreaded hole portion left end, endoporus left part screw thread connect two pieces for being connected with piston right end external screw thread
It picks up and.Cylinder bottom 1 is equipped with the oil duct 15 being connected with external hydraulic system.6 right end inner wall of cylinder barrel is equipped with groove 16, axis bullet
Property baffle ring 14 be packed into groove, prevent that guide sleeve 4 from moving right vertically, 4 outer circle of guide sleeve be equipped with groove 17, elastic spring 5
It is fitted into groove, prevents guide sleeve 4 from moving axially.Guide sleeve 4 is solid by elastic spring 5 and circlip for shaft 14 with cylinder barrel
It is fixed.Specifically, 5 restricted guidance set of elastic spring moves right, 14 restricted guidance set of circlip for shaft is moved to the left.
In Fig. 3, piston 2 is step, and the small column portion being connected including big cylindrical portion, with big cylindrical portion, small column portion is set
There is external screw thread.2 axis of piston is equipped with check valve mounting hole 8, and check valve mounting hole 8 is stepped hole, and one end is unidirectional for installing
Valve, for the other end for connecting oil duct 9 and piston rod blind hole 10,2 radial direction of piston is provided with oil duct 9,9 one end of oil duct and rod chamber phase
Connection, 9 other end of oil duct are connected with check valve mounting hole 8.2 outer circle of piston is provided with annular seal groove 7, support annular groove.
In Fig. 4,3 one end of piston rod is equipped with one section of blind hole 10, is internal thread at 10 aperture of blind hole, the same guide sleeve of this section of blind hole
The pressure and cylinder bottom 1 that the rod chamber that 4 left sides are formed with 6 inner wall of cylinder barrel, 2 right side of piston, 3 outer circle of piston rod is collectively formed are right
The chamber pressure that end face, 6 inner wall of cylinder barrel, 2 left side of piston are formed compares, and when the former pressure is big, check valve is opened, the latter's pressure
When power is big, closed check valve.
During work, external hydraulic system fuel feeding promotes 2 left side of piston by 1 oil duct 15 of cylinder bottom, and piston 2 is with piston
Bar 3 moves right together, when there is bar in 4 left side of guide sleeve with what 6 inner wall of cylinder barrel, 2 right side of piston, 3 outer circle of piston rod were formed
The sum of chamber pressure that cavity pressure and 3 endoporus of piston rod are formed with 2 right side of piston be more than 1 right side of cylinder bottom, 6 inner wall of cylinder barrel,
During the chamber pressure that 2 left side of piston is formed, check valve is opened, and air enters rodless cavity from rod chamber, and rod chamber pressure reduces,
To when being less than rodless cavity pressure, closed check valve, rodless cavity pressure oil liquid promotes the piston body of rod to continue to move, when guide sleeve 4 is left
The rod chamber pressure and 3 endoporus of piston rod and 2 right side of piston that end face is formed with 6 inner wall of cylinder barrel, 2 right side of piston, 3 outer circle of piston rod
When the sum of chamber pressure that end face is formed is less than the chamber pressure that 1 right side of cylinder bottom, 6 inner wall of cylinder barrel, 2 left side of piston are formed,
Closed check valve, pressure oil liquid continues to press on piston, piston rod moves right, when 4 left side of guide sleeve and 6 inner wall of cylinder barrel, work
Fill in 2 right sides, the rod chamber pressure that 3 outer circle of piston rod is formed and the chamber pressure that 3 endoporus of piston rod is formed with 2 right side of piston
The sum of when being more than 1 right side of cylinder bottom, the chamber pressure that 6 inner wall of cylinder barrel, 2 left side of piston are formed, check valve is opened, and air is from having
Rod cavity enters rodless cavity, when the rod chamber that 4 left side of guide sleeve is formed with 6 inner wall of cylinder barrel, 2 right side of piston, 3 outer circle of piston rod
The sum of chamber pressure that pressure and 3 endoporus of piston rod are formed with 2 right side of piston is less than 1 right side of cylinder bottom, 6 inner wall of cylinder barrel, work
When filling in the chamber pressure of 2 left sides formation, closed check valve, pressure oil liquid continues to press on piston, piston rod moves right, so
It is repeated, piston will not be bottomed out rapidly by external pressure, and there are one the processes of buffering, can reduce the impact to guide sleeve；
Outside piston is equipped with y-shaped ring, prevents that rod chamber fluid from entering rodless cavity, always without fluid in rod chamber, at piston rod
External leakage will not be generated.
Claims (9)
1. a kind of single-action hydraulic cylinder, it is characterised in that：Including cylinder barrel（6）, piston rod（3）, piston（2）, loaded on cylinder barrel（6）One
The cylinder bottom at end（1）, loaded on cylinder barrel（6）The guide sleeve of the other end（4）, loaded on piston rod（3）The piston of one end（2）By cylinder barrel（6）
Inner cavity is divided into rod chamber, rodless cavity, piston rod（3）The other end is through guide sleeve（4）Stretch out cylinder barrel（6）, it is arranged at piston（2）Upper use
It is equipped with to balance the check valve of gas pressure in rod chamber and rodless cavity at the passage of connection rod chamber and rodless cavity（13）.
2. single-action hydraulic cylinder according to claim 1, it is characterised in that：The piston（2）For step, including great circle
Column portion, the small column portion being connected with big cylindrical portion, small column portion are equipped with external screw thread；The piston rod（3）One end is equipped with blind hole
（10）, the internal thread with the cooperation assembling of small column portion is equipped at the blind hole aperture.
3. single-action hydraulic cylinder according to claim 1 or 2, it is characterised in that：The passage includes being arranged at piston（2）
Check valve mounting hole on axis（8）, it is arranged at piston（2）The oil duct of radial direction（9）, oil duct（9）One end is connected with rod chamber,
Oil duct（9）The other end and check valve mounting hole（8）It is connected.
4. single-action hydraulic cylinder according to claim 3, it is characterised in that：The check valve mounting hole（8）For stepped hole,
The small hole portion being connected including big hole portion, with big hole portion, check valve（13）At big hole portion.
5. single-action hydraulic cylinder according to claim 1, it is characterised in that：The cylinder bottom（1）It is equipped with and external hydraulic
The oil duct that system is connected（15）.
6. single-action hydraulic cylinder according to claim 1, it is characterised in that：The piston（2）The sealed circle of outer wall（12）
With cylinder barrel（6）It is tightly connected.
7. single-action hydraulic cylinder according to claim 6, it is characterised in that：The sealing ring（12）For y-shaped ring.
8. single-action hydraulic cylinder according to claim 6, it is characterised in that：The outside piston is equipped with and sealing ring（12）
Coordinate the ring-shaped groove of assembling.
9. single-action hydraulic cylinder according to claim 1, it is characterised in that：The guide sleeve（4）With cylinder barrel（6）Pass through steel
Silk baffle ring（5）And circlip for shaft（14）It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611049523.0A CN108105198A (en) | 2016-11-25 | 2016-11-25 | A kind of single-action hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611049523.0A CN108105198A (en) | 2016-11-25 | 2016-11-25 | A kind of single-action hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108105198A true CN108105198A (en) | 2018-06-01 |
Family
ID=62203909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611049523.0A Pending CN108105198A (en) | 2016-11-25 | 2016-11-25 | A kind of single-action hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108105198A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307192A (en) * | 2019-07-31 | 2019-10-08 | 娄底市中兴液压件有限公司 | Pressurize oil cylinder |
| CN111348597A (en) * | 2020-03-25 | 2020-06-30 | 安徽合力股份有限公司 | Gas-liquid double-medium buffer oil cylinder and buffer method thereof |
| CN114688123A (en) * | 2020-12-30 | 2022-07-01 | 徐州徐工液压件有限公司 | Hydraulic cylinder integration device of segment erector and segment erector |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000170711A (en) * | 1998-12-10 | 2000-06-20 | Kayaba Ind Co Ltd | Hydraulic cylinder |
| CN2861120Y (en) * | 2006-01-11 | 2007-01-24 | 大连叉车有限责任公司 | Inner-oil-return type single-action piston cylinder for lifting fork lift |
| CN101033761A (en) * | 2006-03-08 | 2007-09-12 | 利安鑫企业有限公司 | Hydraulic drives for lifting machinery |
| EP1897845A1 (en) * | 2006-09-06 | 2008-03-12 | Lift Tek Elecar S.r.l. | Sealed hydraulic lifting cylinder with internal oil recovery |
| CN103511389A (en) * | 2013-10-15 | 2014-01-15 | 湖南特力液压有限公司 | Single-acting hydraulic cylinder |
| CN103603975A (en) * | 2013-11-26 | 2014-02-26 | 湖南特力液压有限公司 | Push rod one-way valve and multi-stage hydraulic cylinder |
| CN105757042A (en) * | 2016-04-29 | 2016-07-13 | 合肥长源液压股份有限公司 | Anticorrosion single-action hydraulic cylinder |
| CN206221410U (en) * | 2016-11-25 | 2017-06-06 | 湖北江山液压科技有限公司 | A kind of single-action hydraulic cylinder |
-
2016
- 2016-11-25 CN CN201611049523.0A patent/CN108105198A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000170711A (en) * | 1998-12-10 | 2000-06-20 | Kayaba Ind Co Ltd | Hydraulic cylinder |
| CN2861120Y (en) * | 2006-01-11 | 2007-01-24 | 大连叉车有限责任公司 | Inner-oil-return type single-action piston cylinder for lifting fork lift |
| CN101033761A (en) * | 2006-03-08 | 2007-09-12 | 利安鑫企业有限公司 | Hydraulic drives for lifting machinery |
| EP1897845A1 (en) * | 2006-09-06 | 2008-03-12 | Lift Tek Elecar S.r.l. | Sealed hydraulic lifting cylinder with internal oil recovery |
| CN103511389A (en) * | 2013-10-15 | 2014-01-15 | 湖南特力液压有限公司 | Single-acting hydraulic cylinder |
| CN103603975A (en) * | 2013-11-26 | 2014-02-26 | 湖南特力液压有限公司 | Push rod one-way valve and multi-stage hydraulic cylinder |
| CN105757042A (en) * | 2016-04-29 | 2016-07-13 | 合肥长源液压股份有限公司 | Anticorrosion single-action hydraulic cylinder |
| CN206221410U (en) * | 2016-11-25 | 2017-06-06 | 湖北江山液压科技有限公司 | A kind of single-action hydraulic cylinder |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307192A (en) * | 2019-07-31 | 2019-10-08 | 娄底市中兴液压件有限公司 | Pressurize oil cylinder |
| CN110307192B (en) * | 2019-07-31 | 2024-06-07 | 娄底市中兴液压件有限公司 | Pressurized oil cylinder |
| CN111348597A (en) * | 2020-03-25 | 2020-06-30 | 安徽合力股份有限公司 | Gas-liquid double-medium buffer oil cylinder and buffer method thereof |
| CN111348597B (en) * | 2020-03-25 | 2023-12-01 | 安徽合力股份有限公司 | Gas-liquid double-medium buffer oil cylinder and buffer method thereof |
| CN114688123A (en) * | 2020-12-30 | 2022-07-01 | 徐州徐工液压件有限公司 | Hydraulic cylinder integration device of segment erector and segment erector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203926577U (en) | Magnetorheological fluid shock absorber | |
| CN103148157B (en) | Multistage squash type MR damper | |
| SE0702838L (en) | Shock absorber with double piston | |
| CN108105198A (en) | A kind of single-action hydraulic cylinder | |
| EP1930620A3 (en) | Hydraulic shock absorber | |
| CN206802183U (en) | Adjustable damping device | |
| CN101865178A (en) | Two-stage hydraulic cylinder | |
| CN107654563A (en) | Adjustable damping device | |
| CN206221410U (en) | A kind of single-action hydraulic cylinder | |
| CN108953462A (en) | A kind of in-line arrangement hydraulic damper | |
| CN203641153U (en) | Butter type hydraulic oil cylinder | |
| CN204372028U (en) | Amplitude is correlated with damping characteristic vibration damper | |
| CN103851121A (en) | Snaking prevention shock absorber | |
| CN102635590A (en) | Buffer-length-adjustable hydraulic cylinder | |
| CN208935063U (en) | A kind of hydraulic cylinder buffer structure | |
| CN207195354U (en) | A kind of multipurpose numerical control hydraulic oil cylinder | |
| CN208106881U (en) | Novel energy-storage hydraulic cylinder | |
| CN106594149B (en) | A kind of hydraulic damper with stiffness tuning function | |
| CN207122531U (en) | Novel oil gas suspension cylinder | |
| CN214578526U (en) | Hydraulic damping type bidirectional fixed speed controller | |
| CN205277970U (en) | Stable form pneumatic cylinder structure | |
| CN104806599A (en) | Boosting type mechanical locking type hydraulic cylinder | |
| CN209026093U (en) | A kind of dust collecting apparatus vibration absorber | |
| CN204253494U (en) | High speed and high pressure injection machine die cylinder | |
| CN209041213U (en) | A kind of two-stage hydraulic cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200413 Address after: 441004 Lianhua Road, Nissan Industrial Park, Xiangyang hi tech Zone, Hubei Province, No. 1 Applicant after: HUBEI JIANGSHAN HEAVY INDUSTRIES Co.,Ltd. Address before: 441004 No. 1 Lianhua Road, Nissan Industrial Park, hi tech Zone, Hubei, Xiangfan Applicant before: HUBEI JIANGSHAN HYDRAULIC TECHNOLOGY Co.,Ltd. |