CN105041769A - Fast-extending and slow-contracting hydraulic cylinder - Google Patents
Fast-extending and slow-contracting hydraulic cylinder Download PDFInfo
- Publication number
- CN105041769A CN105041769A CN201510538796.0A CN201510538796A CN105041769A CN 105041769 A CN105041769 A CN 105041769A CN 201510538796 A CN201510538796 A CN 201510538796A CN 105041769 A CN105041769 A CN 105041769A
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- China
- Prior art keywords
- piston rod
- piston
- end cap
- oil
- sleeve
- 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
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
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- 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
- F15B15/1433—End caps
-
- 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
-
- 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
- F15B15/1457—Piston rods
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention provides a fast-extending and slow-contracting hydraulic cylinder. The hydraulic cylinder mainly comprises a cylinder barrel, a piston rod, a piston, a buffer sleeve, a jet flow passage, an acceleration sleeve, a guide buffer sleeve, an end cover B and an end cover A. The fast-extending and slow-contracting hydraulic cylinder is characterized in that the piston rod can extend fast and contract slowly. According to the fast-extending and slow-contracting hydraulic cylinder, the buffer sleeve with one inwardly concave side and an angular jet flow passage are arranged, so that the slow contracting of the piston rod is realized; the parabola-shaped acceleration sleeve is arranged, so that the fast extending of the piston rod is realized; the parabola-shaped inwardly-concave guide buffer sleeve is arranged, and an annular blind hole is formed in the guide buffer sleeve, so that buffer stop of the acceleration sleeve is realized, the extension length of the piston rod is increased, and soft start contraction of the piston rod is realized; a check valve is arranged on the cylinder barrel, so that high-pressure air in the cylinder is discharged; elastic pads are arranged between the end cover B and the guide buffer sleeve, so that impact on the guide buffer sleeve generated by fluid is absorbed; oil grooves and sealing rings are arranged on the outer side surface of the piston, so that oil leakage, temporary storage of impurities in oil and sealing of the piston are realized.
Description
Technical field
The present invention relates to one and stretch slow contracting formula oil hydraulic cylinder soon, the jet flow road particularly relating to a kind of cushion collar by side indent and dihedral realizes the slow retraction of piston rod; Stretching out fast of piston rod is realized by parabola shaped acceleration cover; By the buffering sleeve of parabola shaped indent and on the annular blind hole buffering that realizes accelerating cover stop, increasing the extrusion of piston rod and stopper rod flexibility to start retraction; The discharge of cylinder inner high voltage gas is realized by the one-way valve on cylinder barrel; By the cushion between end cap B and guiding buffering sleeve, absorption fluids is to the impact kinetic energy of guiding buffering sleeve; By oil groove and the seal ring of piston outer side surface, realize the sealing of the temporary and piston of impurity in leakage of oil, oil, belong to the technical research field of oil hydraulic cylinder.
Background technique
Oil hydraulic cylinder utilizes the straight reciprocating motion of piston to change hydraulic energy into mechanical energy.But due to the monotony of current hydraulic cylinder structure, cause following problem: one is that piston movement resistance is large, because of the monotony of piston structure, causes and makes fluid large to the resistance of piston, piston rod cannot be stretched out fast; Two is that damping device efficiency is low, causes indivedual buffer piston to lose efficacy, causes the damaged in collision between part.
Therefore, for existing oil hydraulic cylinder in use ubiquitous resistance stretch out greatly slowly, the problem such as retraction buffer invalidation, should consider from the overall structure of oil hydraulic cylinder, the little a kind of oil hydraulic cylinder stretching out fast, cushion retraction of design resistance.
Summary of the invention
The present invention is directed to existing oil hydraulic cylinder in use ubiquitous resistance stretch out greatly slowly, the problem such as retraction buffer invalidation, provide a kind of one that can effectively solve the problem and stretch slow contracting formula oil hydraulic cylinder soon.
One of the present invention stretches slow contracting formula oil hydraulic cylinder by the following technical solutions soon:
One stretches slow contracting formula oil hydraulic cylinder soon, mainly comprise cylinder barrel, piston rod, piston, cushion collar, jet flow road, accelerate cover, guiding buffering sleeve, end cap B and end cap A, end cap B and end cap A is threaded connection and is arranged on cylinder barrel two ends, acceleration cover, piston, cushion collar are threaded connection installation on the piston rod successively, guiding buffering sleeve is arranged on piston rod, and jet flow road is opened on the cylinder barrel near cushion collar side; The two ends of described cylinder barrel ipsilateral have hydraulic fluid port A and hydraulic fluid port B, and hydraulic fluid port A is near end cap B, and hydraulic fluid port B is near end cap A, and the cylinder barrel near end cap B is provided with one-way valve, and the side of one-way valve has air outlet flue; Described end cap B has through hole, and through hole is provided with dust ring, is provided with cushion A and the cushion B of rubber material between end cap B and guiding buffering sleeve; Described piston rod one end has outside thread; Be provided with the through hole containing internal thread in the middle part of described piston, piston outer side surface is provided with oil groove A, seal ring A, oil groove B, seal ring B and oil groove C successively; Be provided with the blind hole containing internal thread in the middle part of described cushion collar, cushion collar is the cylindrical structural of side indent, and its inner sunken face is sphere and its center section radius is
r; The cross section in described jet flow road is angular structure, and an end face is angle of inclination in vertical, other end
a,
abe 30 ° ~ 60 ° and the figure of merit is 45 °; Accelerate the through hole be provided with in the middle part of cover containing internal thread, accelerate cover for taper type structure, the plain line of its frustum curved surface is parabola and meets
y=
x 2; Be provided with unthreaded hole in the middle part of described guiding buffering sleeve, guiding buffering sleeve is side taper type concave inward structure, and the plain line of its frustum curved surface is parabola and meets
y=
x 2, guiding buffering sleeve indent side has annular blind hole and communicates with hydraulic fluid port A, and guiding buffering sleeve outer side surface is provided with seal ring A and seal ring B.
The present invention is provided with one-way valve on cylinder barrel, the discharge of cylinder inner high voltage gas is realized by this design, namely when cylinder internal air pressure height, to the spring force of one-way valve be overcome, and by the valve block jack-up of one-way valve, air outlet flue be communicated with in cylinder, gas is discharged, and when cylinder internal air pressure declines, band movable valve block moves down by spring, air outlet flue is blocked.
The present invention places cushion between end cap B and guiding buffering sleeve, guiding buffering impingement sleeve end cap B is prevented by this design, and absorption fluids is to the impact kinetic energy of guiding buffering sleeve, namely the friction between the resiliently deformable of cushion A and cushion B, phase mutual friction and interior molecules is passed through, with the form of elasticity energy, heat energy by impact kinetic energy consumption.
The present invention is provided with oil groove A, seal ring A, oil groove B, seal ring B and oil groove C successively at piston outer side surface, realizes the temporary of impurity in leakage of oil and oil, realized the sealing of piston by seal ring A and seal ring B by oil groove A, oil groove B and oil groove C.
Cushion collar is designed to the structure of side indent by the present invention, the slow retraction of hydraulic cylinder piston rod is realized by this design, namely storage area hydraulic oil is realized by the sphere of indent, the hydraulic oil stored is as cushion pad, in retraction buffering course, transfer the contact of piston and hydraulic oil to oil-oil to contact, because hydraulic oil has compressibility, the mutual compression of oil-oil therefore can be utilized to realize the buffering retraction of piston rod.
The present invention is the jet flow road of dihedral in design section, cushion collar side, and realized the jet flow buffering of hydraulic cylinder piston by this design, namely hydraulic oil through angle of inclination is
ajet flow road be ejected on cushion collar, the buffering realizing piston moves.
The present invention will speed up and sheathedly counts parabola shaped frustum structure, stretching out fast of hydraulic cylinder piston rod is realized by this design, namely by parabola shaped acceleration cover, hydraulic oil is flowed at its surface smoothing, reduce the resistance to motion of piston, thus piston rod is stretched out fast.
Guiding buffering sleeve is designed to parabola shaped inner sunken face by the present invention, the buffering that not only can realize accelerating cover by this design stops, but also the extrusion of piston rod can be increased, while the compression realization buffering of namely passing through to accelerate to overlap, guiding cushions sleeve interstitial fluid force feed is static, also by accelerating the surface of contact cooperation of cover, guiding buffering sleeve, extend the outreach of piston rod.
The present invention has annular blind hole in guiding buffering sleeve indent side and communicates with hydraulic fluid port A, realize piston rod flexibility by this design and start retraction, namely hydraulic oil is flowed out through annular blind hole by hydraulic fluid port A, with the form stepless action of anchor ring on acceleration cover, eliminate hydraulic oil directly to flow out through hydraulic fluid port A, rigid impulse is produced to acceleration cover and starts.
The invention has the beneficial effects as follows: the slow retraction being realized piston rod by the cushion collar of side indent and the jet flow road of dihedral; Stretching out fast of piston rod is realized by parabola shaped acceleration cover; By the buffering sleeve of parabola shaped indent and on the annular blind hole buffering that realizes accelerating cover stop, increasing the extrusion of piston rod and stopper rod flexibility to start retraction; The discharge of cylinder inner high voltage gas is realized by the one-way valve on cylinder barrel; By the cushion between end cap B and guiding buffering sleeve, absorption fluids is to the impact kinetic energy of guiding buffering sleeve; By oil groove and the seal ring of piston outer side surface, realize the sealing of the temporary and piston of impurity in leakage of oil, oil.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the close-up schematic view that the present invention accelerates cover, piston and cushion collar.
Fig. 3 is the close-up schematic view at jet flow road of the present invention place.
Fig. 4 is that the present invention leads buffering sleeve and the close-up schematic view of end cap B joint.
Fig. 5 is the close-up schematic view at one-way valve place of the present invention.
Wherein: 1, end cap A, 2, jet flow road, 3, cushion collar, 4, piston, 5, cover is accelerated, 6, cylinder barrel, 7, piston rod, 8, ring shaped oil passage, 9, guiding buffering sleeve, 10, cushion A, 11, cushion B, 12, dust ring, 13, end cap B, 14, one-way valve, 15, seal ring A, 16, seal ring B, 17, hydraulic fluid port A, 18, oil groove A, 19, seal ring A, 20, oil groove B, 21, seal ring B, 22, oil groove C, 23, hydraulic fluid port B, 24, air outlet flue.
Embodiment
Embodiment:
As shown in Figure 1, one of the present invention stretches slow contracting formula oil hydraulic cylinder soon, mainly comprise cylinder barrel 6, piston rod 7, piston 4, cushion collar 3, jet flow road 2, accelerate cover 5, guiding buffering sleeve 9, end cap B13 and end cap A1, end cap B13 and end cap A1 is threaded connection and is arranged on cylinder barrel 6 two ends, acceleration cover 5, piston 4, cushion collar 3 are threaded connection successively and are arranged on piston rod 7, guiding buffering sleeve 9 is arranged on piston rod 7, and jet flow road 2 is opened on the cylinder barrel 6 near cushion collar 3 side; The two ends of cylinder barrel 6 ipsilateral have hydraulic fluid port A17 and hydraulic fluid port B23, and hydraulic fluid port A17 is near end cap B13, and hydraulic fluid port B23 is near end cap A1.
Shown in composition graphs 2, piston rod 7 one end has outside thread.The through hole containing internal thread is provided with in the middle part of piston 4, piston 4 outer side surface is provided with oil groove A18, seal ring A19, oil groove B20, seal ring B21 and oil groove C22 successively, during work, oil groove A18, oil groove B20 and oil groove C22 realize the temporary of impurity in leakage of oil and oil, and seal ring A19 and seal ring B21 realizes the sealing of piston 4.
Be provided with the blind hole containing internal thread in the middle part of cushion collar 3, cushion collar 3 is the cylindrical structural of side indent, and its inner sunken face is sphere and its center section radius is
rthe slow retraction of hydraulic cylinder piston rod 7 is realized during this design work, namely storage area hydraulic oil is realized by the sphere of indent, the hydraulic oil stored is as cushion pad, in retraction buffering course, transfer piston 4 to oil-oil with the contact of hydraulic oil to contact, because hydraulic oil has compressibility, the mutual compression of oil-oil therefore can be utilized to realize the buffering retraction of piston rod 7.
Accelerate the through hole be provided with in the middle part of cover 5 containing internal thread, accelerating cover 5 is taper type structure, and the plain line of its frustum curved surface is parabola and meets
y=
x 2, during work, this design realizes stretching out fast of hydraulic cylinder piston rod 7, namely by parabola shaped acceleration cover 5, hydraulic oil is flowed at its surface smoothing, reduces the resistance to motion of piston 4, thus piston rod 7 is stretched out fast.
Shown in composition graphs 3, the cross section in jet flow road 2 is angular structure, and an end face is angle of inclination in vertical, other end
a,
abe 30 ° ~ 60 ° and the figure of merit is 45 °, during work, this design realizes the jet flow buffering of hydraulic cylinder piston 4, and namely hydraulic oil through angle of inclination is
ajet flow road 2 be ejected on cushion collar 3, the buffering realizing piston 4 moves.
Shown in composition graphs 4, end cap B13 has through hole, through hole is provided with dust ring 12.Cushion A10 and the cushion B11 of rubber material are installed between end cap B13 and guiding buffering sleeve 9, during work, this design prevents guiding buffering sleeve 9 from clashing into end cap B13, and absorption fluids is to the impact kinetic energy of guiding buffering sleeve 9, namely the friction between the resiliently deformable of cushion A10 and cushion B11, phase mutual friction and interior molecules is passed through, with the form of elasticity energy, heat energy by impact kinetic energy consumption.
Be provided with unthreaded hole in the middle part of guiding buffering sleeve 9, guiding buffering sleeve 9 is side taper type concave inward structure, and the plain line of its frustum curved surface is parabola and meets
y=
x 2the buffering that this design not only can realize accelerating cover 5 stops, but also the extrusion of piston rod 7 can be increased, namely by accelerating cover 5, the compression of guiding buffering sleeve 9 hydraulic oil realize buffering static while, also by accelerating the surface of contact cooperation of cover 5, guiding buffering sleeve 9, extend the outreach of piston rod 7.
Guiding buffering sleeve 9 indent side has annular blind hole and communicates with hydraulic fluid port A17, guiding buffering sleeve 9 outer side surface is provided with seal ring A15 and seal ring B16, during work, this design realizes piston rod 7 flexibility and starts retraction, namely hydraulic oil is flowed out through annular blind hole by hydraulic fluid port A17, with the form stepless action of anchor ring on acceleration cover 5, eliminate hydraulic oil and directly flow out through hydraulic fluid port A17, rigid impulse is produced to acceleration cover 5 and starts.
Shown in composition graphs 5, the cylinder barrel 6 near end cap B13 is provided with one-way valve 14, and the side of one-way valve 14 has air outlet flue 24, during work, this design realizes the discharge of cylinder inner high voltage gas, namely when cylinder internal air pressure height, will overcome the spring force of one-way valve 14, by the valve block jack-up of one-way valve 14, air outlet flue 24 is communicated with in cylinder, and gas is discharged, and when cylinder internal air pressure declines, band movable valve block moves down by spring, is blocked by air outlet flue 24.
Claims (1)
1. stretch slow contracting formula oil hydraulic cylinder soon for one kind, mainly comprise cylinder barrel, piston rod, piston, cushion collar, jet flow road, accelerate cover, guiding buffering sleeve, end cap B and end cap A, end cap B and end cap A is threaded connection and is arranged on cylinder barrel two ends, acceleration cover, piston, cushion collar are threaded connection installation on the piston rod successively, guiding buffering sleeve is arranged on piston rod, and jet flow road is opened on the cylinder barrel near cushion collar side; It is characterized in that: the two ends of described cylinder barrel ipsilateral have hydraulic fluid port A and hydraulic fluid port B, hydraulic fluid port A is near end cap B, and hydraulic fluid port B is near end cap A, and the cylinder barrel near end cap B is provided with one-way valve, and the side of one-way valve has air outlet flue; Described end cap B has through hole, and through hole is provided with dust ring, is provided with cushion A and the cushion B of rubber material between end cap B and guiding buffering sleeve; Described piston rod one end has outside thread; Be provided with the through hole containing internal thread in the middle part of described piston, piston outer side surface is provided with oil groove A, seal ring A, oil groove B, seal ring B and oil groove C successively; Be provided with the blind hole containing internal thread in the middle part of described cushion collar, cushion collar is the cylindrical structural of side indent, and its inner sunken face is sphere and its center section radius is
r; The cross section in described jet flow road is angular structure, and an end face is angle of inclination in vertical, other end
a,
abe 30 ° ~ 60 ° and the figure of merit is 45 °; Accelerate the through hole be provided with in the middle part of cover containing internal thread, accelerate cover for taper type structure, the plain line of its frustum curved surface is parabola and meets
y=
x 2; Be provided with unthreaded hole in the middle part of described guiding buffering sleeve, guiding buffering sleeve is side taper type concave inward structure, and the plain line of its frustum curved surface is parabola and meets
y=
x 2, guiding buffering sleeve indent side has annular blind hole and communicates with hydraulic fluid port A, and guiding buffering sleeve outer side surface is provided with seal ring A and seal ring B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510538796.0A CN105041769A (en) | 2015-08-29 | 2015-08-29 | Fast-extending and slow-contracting hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510538796.0A CN105041769A (en) | 2015-08-29 | 2015-08-29 | Fast-extending and slow-contracting hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105041769A true CN105041769A (en) | 2015-11-11 |
Family
ID=54448631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510538796.0A Pending CN105041769A (en) | 2015-08-29 | 2015-08-29 | Fast-extending and slow-contracting hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105041769A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673766A (en) * | 2016-03-25 | 2016-06-15 | 嘉兴职业技术学院 | Oil cylinder device dissipating heat automatically |
| CN106017208A (en) * | 2016-07-15 | 2016-10-12 | 中国工程物理研究院总体工程研究所 | Integrated firing device of heavy air cannon |
| CN107299922A (en) * | 2017-08-03 | 2017-10-27 | 安徽科海压缩机制造有限公司 | A kind of buffering hydraulic cylinder |
| CN108591166A (en) * | 2018-05-22 | 2018-09-28 | 中冶宝钢技术服务有限公司 | The hydraulic cylinder of function is kept with load |
| CN108895054A (en) * | 2018-07-27 | 2018-11-27 | 深圳市博瓦克气动技术有限公司 | A kind of cylinder |
| CN109154314A (en) * | 2016-01-15 | 2019-01-04 | 莱卡姆动力传动系统责任有限公司 | With the hydraulic main cylinder for improving sealing device |
| CN109595220A (en) * | 2018-12-21 | 2019-04-09 | 中船重工中南装备有限责任公司 | A kind of Slow Close hydraulic cylinder |
| TWI836723B (en) * | 2022-11-15 | 2024-03-21 | 達見綜合工業股份有限公司 | Double-acting cylinder with retraction cushion function |
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| US5517898A (en) * | 1995-03-29 | 1996-05-21 | Korea Institute Of Machinery & Materials | Pneumatic cylinder utilizing cushioning sleeves, quick exhaust valves and quick supply valves |
| CN101235837A (en) * | 2008-03-07 | 2008-08-06 | 汪立平 | Constant throttle -type amortization structure high pressure oil cylinder |
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| CN202926754U (en) * | 2012-12-07 | 2013-05-08 | 向光 | Four-stage air cylinder for air charging of coach |
| CN203441863U (en) * | 2013-09-02 | 2014-02-19 | 山西北方机械制造有限责任公司 | Oil cylinder device capable of achieving buffering after unloading |
| CN204164082U (en) * | 2014-10-11 | 2015-02-18 | 山东兴田机械有限公司 | A kind of high reliability hydraulic jack |
| CN204921534U (en) * | 2015-08-29 | 2015-12-30 | 济南大学 | Stretch formula pneumatic cylinder that slowly contracts soon |
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2015
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1059332A (en) * | 1962-12-03 | 1967-02-15 | Alkon Products Corp | Improvements in fluid cylinder cushioning device |
| US5517898A (en) * | 1995-03-29 | 1996-05-21 | Korea Institute Of Machinery & Materials | Pneumatic cylinder utilizing cushioning sleeves, quick exhaust valves and quick supply valves |
| CN101235837A (en) * | 2008-03-07 | 2008-08-06 | 汪立平 | Constant throttle -type amortization structure high pressure oil cylinder |
| CN201636116U (en) * | 2010-03-10 | 2010-11-17 | 无锡市长江液压缸厂 | Gap cushioning hydraulic cylinder |
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| CN203441863U (en) * | 2013-09-02 | 2014-02-19 | 山西北方机械制造有限责任公司 | Oil cylinder device capable of achieving buffering after unloading |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109154314A (en) * | 2016-01-15 | 2019-01-04 | 莱卡姆动力传动系统责任有限公司 | With the hydraulic main cylinder for improving sealing device |
| CN109154314B (en) * | 2016-01-15 | 2020-02-28 | 莱卡姆动力传动系统责任有限公司 | Hydraulic master cylinder with improved sealing device |
| CN105673766A (en) * | 2016-03-25 | 2016-06-15 | 嘉兴职业技术学院 | Oil cylinder device dissipating heat automatically |
| CN105673766B (en) * | 2016-03-25 | 2019-02-26 | 嘉兴职业技术学院 | From heat dissipation cylinder apparatus |
| CN106017208A (en) * | 2016-07-15 | 2016-10-12 | 中国工程物理研究院总体工程研究所 | Integrated firing device of heavy air cannon |
| CN107299922A (en) * | 2017-08-03 | 2017-10-27 | 安徽科海压缩机制造有限公司 | A kind of buffering hydraulic cylinder |
| CN108591166A (en) * | 2018-05-22 | 2018-09-28 | 中冶宝钢技术服务有限公司 | The hydraulic cylinder of function is kept with load |
| CN108895054A (en) * | 2018-07-27 | 2018-11-27 | 深圳市博瓦克气动技术有限公司 | A kind of cylinder |
| CN109595220A (en) * | 2018-12-21 | 2019-04-09 | 中船重工中南装备有限责任公司 | A kind of Slow Close hydraulic cylinder |
| CN109595220B (en) * | 2018-12-21 | 2023-12-05 | 中船重工中南装备有限责任公司 | Slowly-closed hydraulic cylinder |
| TWI836723B (en) * | 2022-11-15 | 2024-03-21 | 達見綜合工業股份有限公司 | Double-acting cylinder with retraction cushion function |
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Application publication date: 20151111 |