CN108799252A - The adjustable hydraulic cylinder of bidirectional buffering speed - Google Patents
The adjustable hydraulic cylinder of bidirectional buffering speed Download PDFInfo
- Publication number
- CN108799252A CN108799252A CN201810887418.7A CN201810887418A CN108799252A CN 108799252 A CN108799252 A CN 108799252A CN 201810887418 A CN201810887418 A CN 201810887418A CN 108799252 A CN108799252 A CN 108799252A
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder
- check valve
- piston rod
- shrinkage pool
- 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
Links
- 230000003139 buffering effect Effects 0.000 title claims abstract description 20
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 19
- 239000012530 fluid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001484259 Lacuna Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 210000002268 wool Anatomy 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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position
-
- 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
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Abstract
The invention discloses the adjustable hydraulic cylinders of bidirectional buffering speed, belong to hydraulic cylinder field；The technical problem to be solved is that providing one kind not changing oil cylinder shape, do not increase oil cylinder volume and installation space, it is simple in structure, the adjustable hydraulic cylinder of bidirectional buffering speed may be implemented；Solve the technical solution that the technical problem uses for：The adjustable hydraulic cylinder of bidirectional buffering speed, including cylinder body, cylinder interior is provided with piston and piston rod, piston is provided with throttling passage backwards to the side of piston rod, middle part is provided with the first check valve, first check valve is connected with rodless cavity oil inlet, piston rod rear end is provided with rod chamber oil inlet and the second check valve, overstriking section is provided on piston rod, drain pan is provided on overstriking section, piston rod stretching and recycling are controlled by check valve, passes through throttling passage and drain pan control is stretched out and the speed of recycling；It the composite can be widely applied to hydraulic cylinder field.
Description
Technical field
The adjustable hydraulic cylinder of bidirectional buffering speed of the present invention, belongs to hydraulic cylinder technical field.
Background technology
If the operating mechanism's speed or the amount of holding that hydraulic actuator oil cylinder is driven are larger, if stopping or changing suddenly
Xiang Shi can cause mechanical collision, generate prodigious vibratory impulse and noise, and additional damage is brought to entire mechanical equipment, reduce
Mechanical life, environmental pollution is also added, to reduce or eliminate impact, needs the oil cylinder to take certain arrange in stroke terminal
It applies, realizes decrease of speed, until being zero.
Currently used method has：By design of Hydraulic System, increases buffer loop on oil circuit, sensing is added on oil cylinder
The method of device realizes buffering；Buffer groove by withdrawing stroke end in oil cylinder rectangle or triangle being arranged, piston without
Rod cavity end face is arranged corresponding boss and realizes buffering, and such buffering is architectural limitation, can only realize and withdraw one end buffering, increases single
To the buffer structure of valve, the external structure type of generally use check valve changes oil cylinder traditional structure in this way, increases cylinder body
Product increases oil cylinder installation space.
Invention content
The invention overcomes the deficiencies of the prior art, and provides one kind not changing oil cylinder shape, does not increase cylinder body
Product and installation space, it is simple in structure, the adjustable hydraulic cylinder of bidirectional buffering speed may be implemented.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：The adjustable hydraulic oil of bidirectional buffering speed
Cylinder, including cylinder body, cylinder body one end are provided with cylinder bottom, and the other end is provided with cylinder cap, are internally provided with piston and are connected with piston
Piston rod, piston one end is opposite with cylinder bottom to form rodless cavity, and the piston other end is mutually connected in cylinder body with piston rod is formed with bar
Chamber, the piston side opposite with cylinder bottom are provided with piston shrinkage pool, and the side of cylinder bottom opposing pistons is provided with corresponding piston shrinkage pool
Cylinder bottom shrinkage pool is provided with the first check valve in cylinder bottom shrinkage pool, is provided with the first inlet on cylinder bottom, the first inlet and first single
It is connected to valve, the piston side opposite with cylinder bottom is provided with throttle passage around piston shrinkage pool, in throttle passage and piston shrinkage pool
Wall is connected；
The second inlet is provided on cylinder cap, cylinder cap opposing cylinder is internally provided with the second check valve, the second inlet and second
Check valve is connected；
Piston rod is more than the diameter far from one section of piston close to the diameter of one section of piston, and piston rod is on one section of outer wall of piston
It is provided with drain pan；
It is provided with sleeve outside first check valve, drain tap is provided on sleeve.
It is provided with through-hole in the middle part of the cylinder cap, the through-hole internal diameter and piston rod are identical close to the diameter of one section of piston.
The throttling passage include perpendicular to piston shrinkage pool inner wall the first vertical core and with the first vertical core it is vertical parallel in
First cross-drilled hole of piston shrinkage pool, the first cross-drilled hole are connected to rodless cavity and piston shrinkage pool.
The piston rod is connect by welding with piston.
Second check valve is arranged in parallel with the through-hole in the middle part of cylinder cap, and second inlet includes vertical connection
Second vertical core of through-hole, the second vertical core middle part are provided with the second cross-drilled hole, and the second cross-drilled hole is connected with the second check valve.
The cylinder bottom, sleeve, the first check valve, cylinder body, piston, piston rod, cylinder cap are coaxially arranged.
It is provided with sealing device between the cylinder bottom and cylinder body.
The present invention has the advantages that compared with prior art：Do not increase additional equipment, does not change original oil cylinder supply
The function of oil system, does not change oil cylinder shape, and strong applicability can be met by changing the structure of piston and increasing check valve
The requirement of different loads and friction speed, use scope is wide, is widely used, simple in structure, easily manufactured, good manufacturability.
Description of the drawings
Following further describes the present invention with reference to the drawings.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of inventive piston and piston rod.
In figure 1 be cylinder body, 2 be cylinder bottom, 3 be cylinder cap, 4 be piston, 5 be piston rod, 6 be the first check valve, 7 be first into
Liquid mouth, 8 be the second inlet, 9 be the second check valve, 10 be sleeve, 11 be drain tap, 12 be throttle passage.
Specific implementation mode
As shown in Figure 1 and Figure 2, the adjustable hydraulic cylinder of bidirectional buffering speed of the present invention, including cylinder body 1,1 one end of cylinder body are set
It is equipped with cylinder bottom 2, the other end is provided with cylinder cap 3, is internally provided with piston 4 and the piston rod being connected with piston 45,4 one end of piston
Opposite with cylinder bottom 2 to form rodless cavity, 4 other end of piston is connected in cylinder body 1 with 5 phase of piston rod and forms rod chamber, piston 4 and cylinder bottom
2 opposite sides are provided with piston shrinkage pool, and the side of 2 opposing pistons 4 of cylinder bottom is provided with the cylinder bottom shrinkage pool of corresponding piston shrinkage pool, cylinder
It is provided with the first check valve 6 in the shrinkage pool of bottom, the first inlet 7, the first inlet 7 and 6 phase of the first check valve are provided on cylinder bottom 2
Even, the side opposite with cylinder bottom 2 of piston 4 is provided with throttle passage 12 around piston shrinkage pool, in throttle passage 12 and piston shrinkage pool
Wall is connected；Be provided with the second inlet 8 on cylinder cap 3,3 opposing cylinder 1 of cylinder cap is internally provided with the second check valve 9, second into
Liquid mouth 8 is connected with the second check valve 9；Piston rod 5 is more than the diameter far from 4 one sections of piston close to the diameter of 4 one sections of piston；First
It is provided with sleeve 10 outside check valve 6, drain tap 11 is provided on sleeve 10,3 middle part of cylinder cap is provided with through-hole, the through-hole internal diameter
It is identical close to the diameter of 4 one sections of piston as piston rod 5, throttling passage 12 include perpendicular to piston shrinkage pool inner wall the first vertical core and
With vertical parallel the first cross-drilled hole in piston shrinkage pool of the first vertical core, the first cross-drilled hole is connected to rodless cavity and piston shrinkage pool, piston rod 5 with
Piston 4 connects by welding, and the second check valve 9 and the through-hole at 3 middle part of cylinder cap are arranged in parallel, second inlet
8 include the second vertical core of vertical connection through-hole, and the second cross-drilled hole, the second cross-drilled hole and the second check valve 9 are provided in the middle part of the second vertical core
Be connected, cylinder bottom 2, sleeve 10, the first check valve 6, cylinder body 1, piston 4, piston 5, cylinder cap 3 are coaxially arranged, cylinder bottom 2 and cylinder body 1 it
Between be provided with sealing device.
In the use of the present invention, when piston rod needs to stretch out, the first inlet oil inlet, the first check valve is opened, fluid
It is flowed into piston shrinkage pool by the first check valve, enters rodless cavity then along throttling passage, piston rod is pushed to stretch out, while the
Two closed check valves, the fluid in rod chamber flow to the second inlet along inner hole of cylinder cover and go out, when piston rod thickened portion into
When entering inner hole of cylinder cover, hydraulic pressure goes out oil flow passage blocking, and fluid flows to the from the drain pan and interporal lacuna at piston rod overstriking position
Two inlets, oil pump capacity are reduced, and rod chamber oil pressure increases, and piston rod stretches out speed and slows down；When piston rod needs recycling, second
Inlet oil inlet, the second check valve are opened, and fluid enters rod chamber by the drain pan on the second check valve and piston rod, are pushed
Piston rod starts to withdraw, while the first closed check valve, and rodless cavity fluid flows to the from the oil leak hole on throttling passage and sleeve
One inlet opening, piston rod by normal speed recycle, when piston rod is recovered to stroke tail portion, rodless cavity fluid flow pass by
Resistance, piston rod recycling speed slow down.
The speed of the stretching breeze way of piston rod can be controlled by the width of drain pan with quantity, draining groove width, number
It is big to measure heavy wool flow, piston rod stretches out soon, otherwise slow, and piston rod withdraws breeze way speed and controlled by throttling passage.
The present invention does not change the function of oil cylinder oil supply system, does not change oil cylinder shape, and device is simple, easy to use, is applicable in
Property is strong.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Go out various change.
Claims (7)
1. the adjustable hydraulic cylinder of bidirectional buffering speed, including cylinder body（1）, cylinder body（1）One end is provided with cylinder bottom（2）, the other end
It is provided with cylinder cap（3）, it is internally provided with piston（4）And and piston（4）Connected piston rod（5）, piston（4）One end and cylinder bottom
（2）It is opposite to form rodless cavity, piston（4）The other end and piston rod（5）Mutually it is connected in cylinder body（1）Middle formation rod chamber, feature exist
In：Piston（4）With cylinder bottom（2）Opposite side is provided with piston shrinkage pool, cylinder bottom（2）Opposing pistons（4）Side be provided with pair
The cylinder bottom shrinkage pool of piston shrinkage pool is answered, the first check valve is provided in cylinder bottom shrinkage pool（6）, cylinder bottom（2）On be provided with the first inlet
（7）, the first inlet（7）With the first check valve（6）It is connected, piston（4）With cylinder bottom（2）Opposite side is set around piston shrinkage pool
It is equipped with throttle passage（12）, throttle passage（12）It is connected with piston shrinkage pool inner wall；
Cylinder cap（3）On be provided with the second inlet（8）, cylinder cap（3）Opposing cylinder（1）It is internally provided with the second check valve（9）, the
Two inlets（8）With the second check valve（9）It is connected；
Piston rod（5）Close to piston（4）One section of diameter is more than far from piston（4）One section of diameter, piston rod（5）Close to piston
（4）One section of outer wall on be provided with drain pan；
First check valve（6）It is provided with sleeve outside（10）, sleeve（10）On be provided with drain tap（11）.
2. the adjustable hydraulic cylinder of bidirectional buffering speed according to claim 1, it is characterised in that：The cylinder cap（3）
Middle part is provided with through-hole, the through-hole internal diameter and piston rod（5）Close to piston（4）One section of diameter is identical.
3. the adjustable hydraulic cylinder of bidirectional buffering speed according to claim 1, it is characterised in that：The throttling passage
（12）Include perpendicular to piston shrinkage pool inner wall the first vertical core and with vertical parallel the first cross-drilled hole in piston shrinkage pool of the first vertical core,
First cross-drilled hole is connected to rodless cavity and piston shrinkage pool.
4. the adjustable hydraulic cylinder of bidirectional buffering speed according to claim 1, it is characterised in that：The piston rod
（5）With piston（4）It connects by welding.
5. the adjustable hydraulic cylinder of bidirectional buffering speed according to claim 1 or 2, it is characterised in that：Described second
Check valve（9）With cylinder cap（3）The through-hole at middle part is arranged in parallel, second inlet（8）Including vertical connection through-hole
Two vertical cores, the second vertical core middle part are provided with the second cross-drilled hole, the second cross-drilled hole and the second check valve（9）It is connected.
6. the adjustable hydraulic cylinder of bidirectional buffering speed according to claim 1, it is characterised in that：The cylinder bottom（2）,
Sleeve（10）, the first check valve（6）, cylinder body（1）, piston（4）, piston rod（5）, cylinder cap（3）It is coaxially arranged.
7. the adjustable hydraulic cylinder of bidirectional buffering speed according to claim 1, it is characterised in that：The cylinder bottom（2）
With cylinder body（1）Between be provided with sealing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810887418.7A CN108799252B (en) | 2018-08-06 | 2018-08-06 | Hydraulic cylinder with adjustable bidirectional buffering speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810887418.7A CN108799252B (en) | 2018-08-06 | 2018-08-06 | Hydraulic cylinder with adjustable bidirectional buffering speed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108799252A true CN108799252A (en) | 2018-11-13 |
| CN108799252B CN108799252B (en) | 2024-04-16 |
Family
ID=64079346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810887418.7A Active CN108799252B (en) | 2018-08-06 | 2018-08-06 | Hydraulic cylinder with adjustable bidirectional buffering speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108799252B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469558A (en) * | 2019-09-18 | 2019-11-19 | 三一汽车起重机械有限公司 | Centering oil cylinder and crane with bidirectional buffering |
| CN112594245A (en) * | 2020-11-24 | 2021-04-02 | 中国人民解放军96901部队24分队 | Bidirectional buffer hydraulic cylinder |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19637291A1 (en) * | 1995-11-02 | 1997-05-07 | Festo Kg | Device for end position damping of piston of pneumatic work cylinder |
| CN201991879U (en) * | 2011-04-20 | 2011-09-28 | 江苏技术师范学院 | Hydraulic cylinder buffering device |
| CN202560686U (en) * | 2012-05-29 | 2012-11-28 | 常州海宏液压设备有限公司 | Long-stroke buffering cylinder |
| CN203161708U (en) * | 2013-01-21 | 2013-08-28 | 三一汽车制造有限公司 | Buffering hydraulic oil cylinder |
| CN103438050A (en) * | 2013-09-02 | 2013-12-11 | 山西北方机械制造有限责任公司 | Buffer-after-unloading oil cylinder device |
| CN103939419A (en) * | 2013-09-30 | 2014-07-23 | 湖北江山液压科技有限公司 | Hydraulic cylinder constant throttling adjustable buffering device |
| CN104595281A (en) * | 2015-01-21 | 2015-05-06 | 柳州柳工液压件有限公司 | Cushion cylinder |
| CN105673615A (en) * | 2016-03-02 | 2016-06-15 | 庆安集团有限公司 | Actuating cylinder with buffer devices at two ends |
| CN208719061U (en) * | 2018-08-06 | 2019-04-09 | 山西航天清华装备有限责任公司 | A kind of adjustable hydraulic cylinder of bidirectional buffering speed |
-
2018
- 2018-08-06 CN CN201810887418.7A patent/CN108799252B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19637291A1 (en) * | 1995-11-02 | 1997-05-07 | Festo Kg | Device for end position damping of piston of pneumatic work cylinder |
| CN201991879U (en) * | 2011-04-20 | 2011-09-28 | 江苏技术师范学院 | Hydraulic cylinder buffering device |
| CN202560686U (en) * | 2012-05-29 | 2012-11-28 | 常州海宏液压设备有限公司 | Long-stroke buffering cylinder |
| CN203161708U (en) * | 2013-01-21 | 2013-08-28 | 三一汽车制造有限公司 | Buffering hydraulic oil cylinder |
| CN103438050A (en) * | 2013-09-02 | 2013-12-11 | 山西北方机械制造有限责任公司 | Buffer-after-unloading oil cylinder device |
| CN103939419A (en) * | 2013-09-30 | 2014-07-23 | 湖北江山液压科技有限公司 | Hydraulic cylinder constant throttling adjustable buffering device |
| CN104595281A (en) * | 2015-01-21 | 2015-05-06 | 柳州柳工液压件有限公司 | Cushion cylinder |
| CN105673615A (en) * | 2016-03-02 | 2016-06-15 | 庆安集团有限公司 | Actuating cylinder with buffer devices at two ends |
| CN208719061U (en) * | 2018-08-06 | 2019-04-09 | 山西航天清华装备有限责任公司 | A kind of adjustable hydraulic cylinder of bidirectional buffering speed |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469558A (en) * | 2019-09-18 | 2019-11-19 | 三一汽车起重机械有限公司 | Centering oil cylinder and crane with bidirectional buffering |
| CN112594245A (en) * | 2020-11-24 | 2021-04-02 | 中国人民解放军96901部队24分队 | Bidirectional buffer hydraulic cylinder |
| CN112594245B (en) * | 2020-11-24 | 2022-06-28 | 中国人民解放军96901部队24分队 | Bidirectional buffer hydraulic cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108799252B (en) | 2024-04-16 |
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