CN108488145A - A kind of oil cylinder - Google Patents
A kind of oil cylinder Download PDFInfo
- Publication number
- CN108488145A CN108488145A CN201810674376.9A CN201810674376A CN108488145A CN 108488145 A CN108488145 A CN 108488145A CN 201810674376 A CN201810674376 A CN 201810674376A CN 108488145 A CN108488145 A CN 108488145A
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- CN
- China
- Prior art keywords
- piston
- piston rod
- oil
- hole
- elastic
- 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.)
- Granted
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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
-
- 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
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
-
- 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 discloses a kind of oil cylinders,It is intended to overcome the oil cylinder on fitness equipment in the prior art to easy to produce oil leak,The problem of being not suitable for taking exercise towards extensive crowd,It includes the cylinder body with plunger shaft,The piston rod that can be stretched out to cylinder body contract or to outside cylinder body is provided in plunger shaft,The elastic piston that plunger shaft is divided into the first sub- cavity and the second sub- cavity is provided on piston rod,Piston rod can drive elastic piston to be moved back and forth in plunger shaft,The drain path of connection the first sub- cavity and the second sub- cavity is offered on piston rod,Drive piston rod,Piston rod drives elastic piston movement,Elastic piston expands and shuts off to drain path with the increase of driving force,It applies the invention on fitness equipment,Fitness equipment improves damping automatically with the increase that person taking exercise exerts a force,Medium is recycled in inside,Compared to the prior art,The present invention, which has, is suitable for more extensive crowd,It is simple in structure,Production cost is low,The advantages that reducing oily pollution.
Description
Technical field
The invention belongs to oil cylinder technical fields, refer in particular to a kind of oil cylinder of fitness equipment.
Background technology
Fitness equipment oil cylinder refers to and aims at all kinds of fitness equipments offer damping forces, to substitute one kind of various pouring weights and spring
Mechanical device, the damping force provided have the characteristics that force value stabilization, the noise that can reconcile are small, keep compact integral structure simple, tear open
Dress is convenient, is widely used at present in all kinds of fitness equipments.
The oil cylinder of fitness equipment currently on the market has cylinder block, oil cylinder piston, cylinder piston rod, in cylinder block
Interspersed cylinder piston rod, cylinder piston rod connect oil cylinder piston, and oil cylinder piston is by cylinder block inside points every in twoth area, oil cylinder
Oil outlet A and oil outlet B are offered on body, by drive cylinder piston rod to drive oil cylinder piston reciprocal in cylinder block
It is mobile, then the outside oil extractions of oil outlet A and oil outlet B oil inlets or the outside oil extractions of oil outlet B and oil outlet A oil inlets.
But the medium of this oil cylinder is outer loop, medium can be fluid, easy to produce Leakage, cause greasy dirt
Dye, the damping that oil cylinder provides is constant, strength either the smaller people of weight be difficult to drive strength or the larger people's driving of weight compared with
It is light, causes train on poor, therefore is not suitable for towards extensive crowd.
Invention content
In order to overcome the deficiencies of the prior art and there are the problem of, the present invention provide it is a kind of damping with driving force increase and it is automatic
Increase, reduce the extensive oil cylinder of the target user of oily pollution sum.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of oil cylinder includes the cylinder body with plunger shaft, and being provided in plunger shaft can be to cylinder body contract or to cylinder body
The piston rod of outer stretching is provided with the elastic piston that plunger shaft is divided into the first sub- cavity and the second sub- cavity on piston rod,
Piston rod can drive elastic piston to be moved back and forth in plunger shaft, and the first sub- cavity of connection is offered on piston rod and the second son is empty
The drain path of chamber drives piston rod, piston rod that elastic piston movement, elastic piston is driven to expand with the increase of driving force pair
Drain path shuts off.
Preferably, the elastic piston includes piston and elastic component, piston is slidably arranged on piston rod, and elastic component is set
It sets on the piston rod, piston acts on piston rod by elastic component, and piston rod, piston rod band piston is driven to be moved in plunger shaft
Dynamic, the deformation quantity of elastic component increases with the increase of driving force, and piston increases with the deformation quantity of elastic component and slided, to expand
Shut off to drain path, the circulation area of drain path is made to reduce.
Preferably, the elastic component includes the first spring and second spring, the first spring and second spring are mounted on and live
On stopper rod, piston is mounted between the first spring and second spring.
Preferably, the drain path has the first oil-through-hole and the second oil-through-hole, elastic piston is by the first oil-through-hole
Separate in the first sub- cavity and the second sub- cavity with the second oil-through-hole, piston rod, piston rod is driven to drive elastic piston upward
Mobile, elastic piston expands with the increase of driving force shuts off to the first oil-through-hole, and the circulation area of the first oil-through-hole is made to subtract
Small or piston rod drives elastic piston to move down, and elastic piston expands with the increase of driving force to the second oil-through-hole
Shut off, the circulation area of the second oil-through-hole is made to reduce.
Preferably, first oil-through-hole and the second oil-through-hole are opened in the side wall of piston rod, elastic piston is arranged
On the piston rod.
Preferably, the overall structure of first oil-through-hole and the second oil-through-hole is in bar shape.
Preferably, finite place piece is detachably arranged on the piston rod, locating part limits elastic piston in piston rod
On.
Preferably, the cylinder body includes cylinder cap and cylinder barrel, cylinder cap and cylinder barrel are installed together to form plunger shaft.
Preferably, the outer end of the cylinder barrel is provided with the first hanging ring, the outer end of piston rod is provided with the second hanging ring.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that：
(1) in the present invention, increasing with the driving force of driving piston rod, elastic piston expansion shuts off to drain path,
It can be filled with medium in plunger shaft, medium can be fluid, therefore driving force is bigger, and medium is empty in the first sub- cavity and the second son
The resistance that flowing between chamber is subject to is bigger, applies the invention on fitness equipment, the increasing that fitness equipment exerts a force with person taking exercise
Damping is improved automatically greatly, the people of different strength or weight levels obtains suitable exercise intensity, and medium is recycled in inside,
Medium is avoided to leak out, compared to the prior art, the present invention has suitable for more extensive crowd, simple in structure, production
It is at low cost, reduce oily pollution the advantages that.
(2) in the present invention, drive piston rod, piston rod by elastic component band piston, piston with elastic component deformation
And relative displacement occurs on the piston rod, to which the circulation area of the drain path on piston rod is adjusted in piston, with drive
The increase of power, the displacement of piston, which expands, shuts off to drain path to expand, and removes driving force, and piston is made in elastic component
Used in initial position can be restored to, impacted in driving, elastic component also has the function of bumper and absorbing shock.
(3) in the present invention, drain path has the first oil-through-hole and the second oil-through-hole, and elastic piston is by the first oil-through-hole
Separate in the first sub- cavity and the second sub- cavity with the second oil-through-hole, piston rod, piston rod is driven to drive elastic piston upward
Mobile, elastic piston expands with the increase of driving force shuts off to the first oil-through-hole, and the circulation area of the first oil-through-hole is made to subtract
Small or piston rod drives elastic piston to move down, and elastic piston expands with the increase of driving force to the second oil-through-hole
Shut off, the circulation area of the second oil-through-hole is made to reduce, elastic piston expands with the increase of driving force to the first oil-through-hole or
Two oil-through-holes shut off, and the first oil-through-hole and the second oil-through-hole are mutual indepedent, and the first oil-through-hole is individually adjusted when driving up,
The second oil-through-hole is individually adjusted in downward driving, avoids interfering with each other to influence between the first oil-through-hole and the second oil-through-hole
Flow of media.
(4) in the present invention, the first oil-through-hole and the second oil-through-hole are opened in the side wall of piston rod, and elastic piston is arranged
On the piston rod, the overall structure of the first oil-through-hole and the second oil-through-hole be in bar shape, with piston displacement increase and
The proportional relationship of shutting off of the first oil-through-hole of piston pair or the second oil-through-hole, the resistance and driving force that oil cylinder provides have more line
The relationship of property, to be more suitable for different weight or force level people exercise.
(5) in the present invention, finite place piece is detachably set on piston rod, and locating part limits elastic piston in piston rod
On, elastic piston can be disassembled by dismantling locating part from piston rod, therefore the present invention has to assemble, safeguard
Advantage.
Description of the drawings
Fig. 1 is one of the part section structural representation of the present invention；
Fig. 2 is the two of the part section structural representation of the present invention；
Fig. 3 is the structural schematic diagram of the piston rod of the present invention；
In figure：1- cylinder caps, 2- cylinder barrels, the first sub- cavitys of 3-, the second sub- cavitys of 4-, the first hanging rings of 5-, 6- piston rods, 7- are let out
Oily channel, the first oil-through-holes of 8-, the second oil-through-holes of 9-, the second hanging rings of 10-, 11- pistons, the first springs of 12-, 13- second springs,
14- locating parts, 15- bolts, the antifouling rings of 16-, 17- wearing rings, 18- piston packings.
Specific implementation mode
For the ease of the understanding of those skilled in the art, the present invention is made in the following with reference to the drawings and specific embodiments further
Description.
As shown in Figure 1 to Figure 3, a kind of oil cylinder includes the cylinder body with plunger shaft, full medium can be filled in plunger shaft, be situated between
Matter can be fluid, and cylinder body overall structure can be cylindrical shape.
It is provided with the piston rod 6 that can be stretched out to cylinder body contract or to outside cylinder body in plunger shaft, is provided on piston rod 6
Plunger shaft is divided into the elastic piston of the first sub- cavity 3 and the second sub- cavity 4, piston rod 6 can drive elastic piston in piston
Intracavitary moves back and forth, and medium is flowed with movement of the elastic piston in plunger shaft between the first sub- cavity 3 and the second sub- cavity 4
Logical, medium plays the role of hindering elastic piston movement.
The drain path 7 that the first sub- cavity 3 and the second sub- cavity 4 of connection is offered on piston rod 6, in the first sub- cavity 3
Medium the second sub- cavity 4 can be passed to by drain path 7, the medium in the second sub- cavity 4 can be circulated by drain path 7
To the first sub- cavity 3.
Drive piston rod 6, piston rod 6 that elastic piston movement, elastic piston is driven to expand to letting out with the increase of driving force
Oily channel 7 is shut off, and elastic piston is bigger to shutting off for drain path 7, and the valid circulation area of drain path 7 is bigger, medium
Circulation between the first sub- cavity 3 and the second sub- cavity 4 is slower, and the resistance being subject to is bigger,
Compared to the prior art, elastic piston mobile resistance being subject in plunger shaft increases with the increase of driving force,
When the people of different strength either weight levels is used using the fitness equipment strength or the bigger people of weight for applying the present invention
The resistance being subject to is bigger, and the people of different strength or weight levels can access preferable train on, therefore the present invention has
Have the advantages that it is easy to use, be suitable for more extensive crowd, it is simple in structure, reduce oily pollution.
The elastic piston includes piston 11 and elastic component, and plunger shaft can be divided into the first sub- cavity 3 and by piston 11
Two sub- cavitys 4 can be sequentially installed with antifouling ring 16, wearing ring 17, piston packing 18 and antifouling ring between piston 11 and cylinder body
16, therefore wearing ring 17 reduces piston 11 and wears when piston 11 moves in plunger shaft, piston packing 18 improves the first son
The partition effect of cavity 3 and the second sub- cavity 4, antifouling ring 16 avoid the oil in plunger shaft from causing piston seal because of external substance
The damage of circle 18, it is ensured that there is piston packing 18 longer service life, piston 11 to be slidably arranged on piston rod 6, elasticity
Part is arranged on piston rod 6, and piston 11 acts on piston rod 6 by elastic component, drives piston rod 6, piston rod 6 is with piston 11
It is moved in plunger shaft, the deformation quantity of elastic component increases with the increase of driving force, and piston 11 increases with the deformation quantity of elastic component
And slide, to expand shutting off to drain path 7, the circulation area of drain path 7 is made to reduce.
The elastic component includes the first spring 12 and second spring 13, and the first spring 12 and second spring 13 are mounted on piston
On bar 6, the first spring 12 and second spring 13 can be set on piston rod 6, therefore the first spring 12 and second spring 13 are convenient for
It dismounts on elastic component, piston 11 is mounted between the first spring 12 and second spring 13, and piston 11 can be set on piston rod 6
Sliding, when driving piston rod 6, by the first spring 12 and the elastic force of second spring 13 come drive piston 11 in plunger shaft on
Piston 11 can be maintained at just by lower movement, the design of the first spring 12 and second spring 13 in the case of no driving force
It on beginning position, and is impacted in driving, the first spring 12 and second spring 13 also act as the effect of damping, buffering.
The drain path 7 has the first oil-through-hole 8 and the second oil-through-hole 9,9 phase of the first oil-through-hole 8 and the second oil-through-hole
Intercommunicated, elastic piston separates the first oil-through-hole 8 and the second oil-through-hole 9 in the first sub- cavity 3 and the second sub- cavity 4, drives
Piston bar 6, piston rod 6 drive elastic piston to move up, and elastic piston expands with the increase of driving force to the first logical oil
Hole 8 is shut off, and so that the circulation area of the first oil-through-hole 8 is reduced or piston rod 6 drives elastic piston to move down, yielding movable
Plug expands shutting off to the second oil-through-hole 9 with the increase of driving force, so that the circulation area of the second oil-through-hole 9 is reduced, yielding movable
Plug expands shutting off to the first oil-through-hole 8 or the second oil-through-hole 9, the logical oil of the first oil-through-hole 8 and second with the increase of driving force
Hole 9 is mutual indepedent, avoids interfering with each other to influence flow of media between the first oil-through-hole 8 and the second oil-through-hole 9.
According to the environment used, the elastic component for replacing different model may be used or by changing the first oil-through-hole 8
The quantity and size of quantity and size or the second oil-through-hole 9 of change, will be oily come the drag size being subject to when adjusting drive cylinder
The resistance regulation of cylinder is in the level for being suitble to people to take exercise, to make oil cylinder be suitble to the exercise of people.
First oil-through-hole, 8 and second oil-through-hole 9 is opened in the side wall of piston rod 6, and elastic piston is set in piston
On bar 6, piston 11 slides on piston rod 6, by blocking the first oil-through-hole 8 or the second oil-through-hole 9 to change drain path 7
Valid circulation area, realize shutting off to drain path 7.
The overall structure of first oil-through-hole, 8 and second oil-through-hole 9 is in bar shape, the first oil-through-hole 8 and second
The length direction of oil-through-hole 9 can be consistent with the length direction of piston rod 6.
Finite place piece 14 is detachably set on the piston rod 6, and locating part 14 can be fixed on piston rod 6 by bolt 15
On, locating part 14 limits elastic piston on piston rod 6, and locating part 14 is disassembled, can also be by elastic piston from work
It is disassembled on stopper rod 6, therefore is easily installed, safeguards.
The cylinder body includes cylinder cap 1 and cylinder barrel 2, and cylinder cap 1 and cylinder barrel 2 are installed together to form plunger shaft, and cylinder cap 1 can pass through
It is threaded on cylinder barrel 2, therefore dismountable structure improves the leakproofness of plunger shaft and convenient for assembling, maintenance.
The outer end of the cylinder barrel 2 is provided with the first hanging ring 5, and the outer end of piston rod 6 is provided with the second hanging ring 10, and oil cylinder passes through
First hanging ring 5 and the second hanging ring 10 are installed on fitness equipment.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore：It is all according to
The equivalence changes that structure, shape, the principle of the present invention is done, should all be covered by within protection scope of the present invention.
Claims (9)
1. a kind of oil cylinder includes the cylinder body with plunger shaft, which is characterized in that be provided in plunger shaft can to cylinder body contract or
The piston rod (6) that person stretches out to outside cylinder body is provided on piston rod (6) plunger shaft being divided into the first sub- cavity (3) and second
The elastic piston of sub- cavity (4), piston rod (6) can drive elastic piston to be moved back and forth in plunger shaft, and piston rod opens up on (6)
There are the drain path (7) of connection the first sub- cavity (3) and the second sub- cavity (4), driving piston rod (6), piston rod (6) band to move
Property piston movement, elastic piston expands with the increase of driving force shuts off to drain path (7).
2. a kind of oil cylinder according to claim 1, which is characterized in that the elastic piston includes piston (11) and elasticity
Part, piston (11) are slidably arranged on piston rod (6), and elastic component is arranged on piston rod (6), and piston (11) is made by elastic component
For piston rod (6), driving piston rod (6), piston rod (6) band piston (11) moves in plunger shaft, the deformation of elastic component
Amount increases with the increase of driving force, and piston (11) increases with the deformation quantity of elastic component and slided, to expand to drain path
(7) shut off, makes the circulation area of drain path (7) reduce.
3. a kind of oil cylinder according to claim 2, which is characterized in that the elastic component includes the first spring (12) and second
Spring (13), the first spring (12) and second spring (13) are mounted on piston rod (6), and piston (11) is mounted on the first spring
(12) between second spring (13).
4. a kind of oil cylinder according to any one of claim 1 to 3, which is characterized in that the drain path (7) has the
One oil-through-hole (8) and the second oil-through-hole (9), elastic piston separate the first oil-through-hole (8) and the second oil-through-hole (9) in the first son
In cavity (3) and the second sub- cavity (4), driving piston rod (6), piston rod (6) drives elastic piston to move up, elastic piston
Expand with the increase of driving force and shut off to the first oil-through-hole (8), the circulation area of the first oil-through-hole (8) is made to reduce, or
Piston rod (6) drives elastic piston to move down, and elastic piston expands with the increase of driving force cuts the second oil-through-hole (9)
Stream, makes the circulation area of the second oil-through-hole (9) reduce.
5. a kind of oil cylinder according to claim 4, which is characterized in that first oil-through-hole (8) and the second oil-through-hole (9)
It is opened in the side wall of piston rod (6), elastic piston is set on piston rod (6).
6. a kind of oil cylinder according to claim 5, which is characterized in that first oil-through-hole (8) and the second oil-through-hole (9)
Overall structure be in bar shape.
7. according to a kind of oil cylinder described in claims 1 or 2 or 3 or 5 or 6, which is characterized in that removable on the piston rod (6)
Setting finite place piece (14) is unloaded, locating part (14) limits elastic piston on piston rod (6).
8. according to a kind of oil cylinder described in claims 1 or 2 or 3 or 5 or 6, which is characterized in that the cylinder body includes cylinder cap (1)
With cylinder barrel (2), cylinder cap (1) and cylinder barrel (2) are installed together to form plunger shaft.
9. a kind of oil cylinder according to claim 8, which is characterized in that the outer end of the cylinder barrel (2) is provided with the first hanging ring
(5), the outer end of piston rod (6) is provided with the second hanging ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810674376.9A CN108488145B (en) | 2018-06-26 | 2018-06-26 | A kind of oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810674376.9A CN108488145B (en) | 2018-06-26 | 2018-06-26 | A kind of oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108488145A true CN108488145A (en) | 2018-09-04 |
| CN108488145B CN108488145B (en) | 2019-11-08 |
Family
ID=63343280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810674376.9A Active CN108488145B (en) | 2018-06-26 | 2018-06-26 | A kind of oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108488145B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345127A (en) * | 2019-07-12 | 2019-10-18 | 南通翔骜液压润滑设备有限公司 | Multistage hydraulic cylinder |
| CN113175460A (en) * | 2021-04-23 | 2021-07-27 | 中国人民解放军国防科技大学 | Hydraulic cylinder with variable piston section size |
| CN114352604A (en) * | 2022-01-13 | 2022-04-15 | 四川鼎鸿智电装备科技有限公司 | Efficient energy-saving oil cylinder and engineering equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09158970A (en) * | 1995-12-06 | 1997-06-17 | Kayaba Ind Co Ltd | Hydraulic damper |
| RU2285158C2 (en) * | 2004-12-14 | 2006-10-10 | Открытое акционерное общество "Российские железные дороги" (ОАО "РЖД") | Hydraulic cylinder with braking effect |
| CN101093009A (en) * | 2007-07-23 | 2007-12-26 | 南阳淅减汽车减振器有限公司 | Pump type displacement correlated damping shock absorber |
| RU2010140601A (en) * | 2011-04-21 | 2012-10-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский государственный | ADJUSTABLE SUSPENSION SUSPENSION SUSPENSION |
| CN103953678A (en) * | 2014-04-17 | 2014-07-30 | 广东机电职业技术学院 | Automatic reset hydraulic buffer device |
-
2018
- 2018-06-26 CN CN201810674376.9A patent/CN108488145B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09158970A (en) * | 1995-12-06 | 1997-06-17 | Kayaba Ind Co Ltd | Hydraulic damper |
| RU2285158C2 (en) * | 2004-12-14 | 2006-10-10 | Открытое акционерное общество "Российские железные дороги" (ОАО "РЖД") | Hydraulic cylinder with braking effect |
| CN101093009A (en) * | 2007-07-23 | 2007-12-26 | 南阳淅减汽车减振器有限公司 | Pump type displacement correlated damping shock absorber |
| RU2010140601A (en) * | 2011-04-21 | 2012-10-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский государственный | ADJUSTABLE SUSPENSION SUSPENSION SUSPENSION |
| CN103953678A (en) * | 2014-04-17 | 2014-07-30 | 广东机电职业技术学院 | Automatic reset hydraulic buffer device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345127A (en) * | 2019-07-12 | 2019-10-18 | 南通翔骜液压润滑设备有限公司 | Multistage hydraulic cylinder |
| CN113175460A (en) * | 2021-04-23 | 2021-07-27 | 中国人民解放军国防科技大学 | Hydraulic cylinder with variable piston section size |
| CN113175460B (en) * | 2021-04-23 | 2023-09-01 | 中国人民解放军国防科技大学 | Hydraulic cylinder with variable piston section |
| CN114352604A (en) * | 2022-01-13 | 2022-04-15 | 四川鼎鸿智电装备科技有限公司 | Efficient energy-saving oil cylinder and engineering equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108488145B (en) | 2019-11-08 |
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