CN107542723A - A kind of nothing changes the single-acting two-stage hydraulic cylinder of level impact - Google Patents
A kind of nothing changes the single-acting two-stage hydraulic cylinder of level impact Download PDFInfo
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- CN107542723A CN107542723A CN201710949569.6A CN201710949569A CN107542723A CN 107542723 A CN107542723 A CN 107542723A CN 201710949569 A CN201710949569 A CN 201710949569A CN 107542723 A CN107542723 A CN 107542723A
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- cylinder barrel
- hydraulic cylinder
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- 239000012530 fluid Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 5
- 208000002925 dental caries Diseases 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 7
- 239000010720 hydraulic oil Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention discloses the single-acting two-stage hydraulic cylinder that a kind of nothing changes level impact, it includes cylinder barrel（1）, protecgulum（4）, it is characterised in that cylinder barrel（1）Inside set first stage piston bar（3）, first stage piston bar（3）Inside it is provided with baffle ring（5）Second piston rod（2）, cylinder barrel（1）With first stage piston bar（3）Between form the first cavity（12）, first stage piston bar（3）With second piston rod（2）Between form the second cavity（13）, cylinder barrel（1）It is provided with hydraulic fluid port（14）, first stage piston bar（3）On be communicated with the oil-through-holes of two cavitys（15）, the first cavity（12）Annulus area and second piston rod（2）Cross-sectional area it is equal, the present invention, which solves, impacts bigger, the shortcomings that stability is low when traditional two-stage hydraulic cylinder changes grade, simultaneously because two piston rods stretch out simultaneously, shorten the working time of hydraulic cylinder, improve operating efficiency.
Description
Technical field：
The present invention relates to a kind of single-acting two-stage hydraulic cylinder, more particularly to a kind of nothing to change level impact, two-stage piston rod while act
Hydraulic cylinder.
Background technology：
Traditional single-acting two-stage hydraulic cylinder is typically：Piston rods at different levels stretch out successively, i.e. the big piston rod in bar footpath stretches out first,
After reaching stroke, the small piston rod in bar footpath stretches out again, constant loading（Oil cylinder power output is constant）In the case of, the big work in bar footpath
When the small piston rod in the fully extended then bar footpath of stopper rod starts to stretch out（From large to small, i.e., active area is from large to small in bar footpath）, this
When（When oil cylinder changes grade）The operating pressure moment increase of oil cylinder, and in the case where flow is constant, flow active area diminishes,
Piston rod movement speed moment accelerates, and produces larger pressure and flow attack to hydraulic cylinder, influences the stability of hydraulic cylinder；Pass
System single-acting two-stage hydraulic cylinder piston rod extends and retracts successively, the actuation time length of hydraulic cylinder, and operating efficiency is low.
The content of the invention：
It is an object of the invention to overcome the deficiency of above-mentioned prior art and provide it is a kind of it is stable, the working time is short,
The nothing that operating efficiency is high, two-stage piston rod acts simultaneously changes the single-acting two-stage hydraulic cylinder of level impact.
The purpose of the present invention can be reached by following measure：A kind of nothing changes the single-acting two-stage hydraulic cylinder of level impact,
It includes cylinder barrel, cylinder barrel threaded connection protecgulum, it is characterised in that be provided with first stage piston bar inside cylinder barrel, be provided with first stage piston bar
Second piston rod, baffle ring is housed on second piston rod, forms the first cavity between cylinder barrel and first stage piston bar, first stage piston bar with
The second cavity is formed between second piston rod, cylinder barrel is provided with hydraulic fluid port, and first stage piston bar is provided with oil-through-hole, and the first cavity passes through
Oil-through-hole is connected with the second cavity, and the annulus area of the first cavity is equal with the cross-sectional area of second piston rod.
In order to further realize the purpose of the present invention, equipped with hole with close between one end of described first stage piston bar and cylinder barrel
Seal, equipped with the second axle sealing ring, the second dust ring between the other end and second piston rod.
In order to further realize the purpose of the present invention, sealed between described protecgulum and cylinder barrel by O-ring, in protecgulum
Wall has the first axle sealing ring, the second dust ring.
The present invention can produce following good effect compared with the prior art：One, pass through hydraulic cylinder first stage piston bar rod chamber
Annulus area is equal with second piston rod active area, it is ensured that hydraulic cylinder two-stage piston rod while synchronization action；Two, due to liquid
Cylinder pressure two-stage piston rod acts simultaneously, sequentially stretches out, changes during level successively in the absence of traditional large and small piston rod of two-stage hydraulic cylinder
The impact shock of pressure and speed is produced, the problem of influenceing stability；Three, because two-stage piston rod acts simultaneously, hydraulic cylinder
Actuation time more traditional single-acting two-stage hydraulic cylinder（Large and small piston rod sequentially extends and retracts successively）Actuation time is short, work
Make efficiency high.Small present invention is mainly applied to installation dimension, actuating range is big, requires during action to require without impact, actuation time
Few occasion.
Brief description of the drawings：
Fig. 1 is structural representation when oil cylinder of the present invention is fully retracted；
Fig. 2 is structural representation when oil cylinder of the present invention is fully extended.
Embodiment：Embodiment of the invention below in conjunction with the accompanying drawings elaborates：
Embodiment：A kind of nothing changes the single-acting two-stage hydraulic cylinder of level impact（Referring to Fig. 1, Fig. 2）, it includes cylinder barrel 1, the spiral shell of cylinder barrel 1
Line connects protecgulum 4, and protecgulum 4 realizes the static seal with cylinder barrel 1 by O-ring 6；The inwall of protecgulum 4 equipped with the first axle sealing ring 9,
Second dust ring 7；The inside of cylinder barrel 1 is provided with first stage piston bar 3, and second piston rod 2, first stage piston bar 3 are provided with first stage piston bar 3
One end and cylinder barrel 1 between hole sealing ring 11 is housed, the second axle sealing ring is housed between the other end and second piston rod 2
10th, the second dust ring 8；Baffle ring 5 is housed on second piston rod 2, limits the stroke of oil cylinder.Shape between cylinder barrel 1 and first stage piston bar 3
Into the first cavity 12, the second cavity 13, the annulus area of the first cavity 12 are formed between first stage piston bar 3 and second piston rod 2
Equal with the active area of second piston rod 2, cylinder barrel 1 is provided with hydraulic fluid port 14, and first stage piston bar 3 is provided with oil-through-hole 15, and first
Cavity 12 is connected by oil-through-hole 15 with the second cavity 13.
Operation principle：
When hydraulic fluid port 14 leads to oily, hydraulic oil promotion first stage piston bar 3 is protruding, and the first cavity 12 passes through oil-through-hole 15 and second
Cavity 13 is connected, and now the hydraulic oil in the first cavity 12 is entered in the second cavity 13, and second piston rod 2 is protruding；By
Hydraulic pressure equal with the active area of second piston rod 2 in the annulus area of the first cavity 12, while being discharged in the first cavity 12
Oil is completely into in the second sky 13, therefore first stage piston bar 3 and outwardly directed equal length (the i.e. speed of second piston rod 2
It is equal), realize first stage piston bar 3 and second piston rod 2 while be synchronized with the movement, two-stage piston rod it is fully extended to front end (see
Fig. 2), a grade process is changed in the absence of traditional two-stage hydraulic cylinder.When under external force, when hydraulic cylinder is retracted, in the second cavity 13
Hydraulic oil entered by oil-through-hole 15 in the first cavity 12, due to the active area and the first cavity 12 of second piston rod 2
Annulus area it is equal, completely into in the first cavity 12, two-stage piston rod is realized simultaneously for hydraulic oil in the first cavity 13
Synchronously it is fully retracted, hydraulic cylinder is retracted into most short (see Fig. 1).During the stretching of this hydraulic cylinder two-stage piston rod and retraction not
In the presence of the caused pressure and velocity variations during changing level of traditional two-stage hydraulic cylinder.
Embodiment above is only that the preferred embodiment of the present invention is described, and other preferred embodiments are herein
Do not tire out one by one and state, and not the scope of the present invention is defined, on the premise of design spirit of the present invention is not departed from, this area
The various modifications and improvement that ordinary skill technical staff makes to technical scheme, the right that all should fall within the present invention will
In the protection domain for asking book determination.
Claims (3)
1. a kind of nothing changes the single-acting two-stage hydraulic cylinder of level impact, it includes cylinder barrel（1）, cylinder barrel（1）It is threadedly coupled protecgulum（4）,
It is characterized in that cylinder barrel（1）Inside is provided with first stage piston bar（3）, first stage piston bar（3）It is interior to be provided with second piston rod（2）, two level
Piston rod（2）It is upper that baffle ring is housed（5）, cylinder barrel（1）With first stage piston bar（3）Between form the first cavity（12）, first stage piston bar
（3）With second piston rod（2）Between form the second cavity（13）, cylinder barrel（1）It is provided with hydraulic fluid port（14）, first stage piston bar（3）On
Provided with oil-through-hole（15）, the first cavity（12）Pass through oil-through-hole（15）With the second cavity（13）It is connected, the first cavity（12）Ring
Shape area and second piston rod（2）Cross-sectional area it is equal.
2. a kind of nothing according to claim 1 changes the single-acting two-stage hydraulic cylinder of level impact, it is characterised in that described one
Level piston rod（3）One end and cylinder barrel（1）Between hole sealing ring is housed（11）, the other end and second piston rod（2）Between fill
There is the second axle sealing ring（10）, the second dust ring（8）.
3. a kind of nothing according to claim 1 changes the single-acting two-stage hydraulic cylinder of level impact, it is characterised in that before described
Lid（4）With cylinder barrel（1）Between pass through O-ring（6）Sealing, protecgulum（4）Inwall is equipped with the first axle sealing ring（9）, it is second dust-proof
Circle（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949569.6A CN107542723A (en) | 2017-10-13 | 2017-10-13 | A kind of nothing changes the single-acting two-stage hydraulic cylinder of level impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949569.6A CN107542723A (en) | 2017-10-13 | 2017-10-13 | A kind of nothing changes the single-acting two-stage hydraulic cylinder of level impact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107542723A true CN107542723A (en) | 2018-01-05 |
Family
ID=60967639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710949569.6A Pending CN107542723A (en) | 2017-10-13 | 2017-10-13 | A kind of nothing changes the single-acting two-stage hydraulic cylinder of level impact |
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| CN (1) | CN107542723A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869447A (en) * | 2018-09-04 | 2018-11-23 | 哈尔滨工业大学 | A kind of change effective active area hydraulic cylinder |
| CN108953283A (en) * | 2018-09-18 | 2018-12-07 | 重庆市巴山液压附件厂有限公司 | A kind of synchronous hydraulic oil cylinder |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202007009153U1 (en) * | 2007-06-29 | 2007-09-13 | Focks, Hubert | Hydraulic cylinder assembly |
| CN101130977A (en) * | 2007-07-27 | 2008-02-27 | 韩顺和 | Force-bearing disk squeezing and expanding machine |
| CN201827169U (en) * | 2010-10-12 | 2011-05-11 | 济南东奥自控技术有限公司 | Multilevel hydraulic cylinder with front-mounted hydraulic fluid port |
| CN201884360U (en) * | 2010-12-28 | 2011-06-29 | 中船重工中南装备有限责任公司 | Single-acting two-stage hydraulic cylinder |
| CN102996570A (en) * | 2012-11-28 | 2013-03-27 | 三一重工股份有限公司 | Single-action double-graded hydraulic cylinder and engineering machine |
| CN202900830U (en) * | 2012-09-21 | 2013-04-24 | 张海平 | Sequence hydraulic cylinder |
| CN203529812U (en) * | 2013-09-18 | 2014-04-09 | 徐州重型机械有限公司 | Landing leg expansion control system and crane |
| CN104863924A (en) * | 2015-05-24 | 2015-08-26 | 南京理工大学 | Three-cavity power hydraulic cylinder |
| CN105650059A (en) * | 2016-03-31 | 2016-06-08 | 江阴市洪腾机械有限公司 | Double-acting two-stage hydraulic cylinder |
| CN207229508U (en) * | 2017-10-13 | 2018-04-13 | 烟台未来自动装备有限责任公司 | A kind of nothing changes the single-acting two-stage hydraulic cylinder of level impact |
-
2017
- 2017-10-13 CN CN201710949569.6A patent/CN107542723A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202007009153U1 (en) * | 2007-06-29 | 2007-09-13 | Focks, Hubert | Hydraulic cylinder assembly |
| CN101130977A (en) * | 2007-07-27 | 2008-02-27 | 韩顺和 | Force-bearing disk squeezing and expanding machine |
| CN201827169U (en) * | 2010-10-12 | 2011-05-11 | 济南东奥自控技术有限公司 | Multilevel hydraulic cylinder with front-mounted hydraulic fluid port |
| CN201884360U (en) * | 2010-12-28 | 2011-06-29 | 中船重工中南装备有限责任公司 | Single-acting two-stage hydraulic cylinder |
| CN202900830U (en) * | 2012-09-21 | 2013-04-24 | 张海平 | Sequence hydraulic cylinder |
| CN102996570A (en) * | 2012-11-28 | 2013-03-27 | 三一重工股份有限公司 | Single-action double-graded hydraulic cylinder and engineering machine |
| CN203529812U (en) * | 2013-09-18 | 2014-04-09 | 徐州重型机械有限公司 | Landing leg expansion control system and crane |
| CN104863924A (en) * | 2015-05-24 | 2015-08-26 | 南京理工大学 | Three-cavity power hydraulic cylinder |
| CN105650059A (en) * | 2016-03-31 | 2016-06-08 | 江阴市洪腾机械有限公司 | Double-acting two-stage hydraulic cylinder |
| CN207229508U (en) * | 2017-10-13 | 2018-04-13 | 烟台未来自动装备有限责任公司 | A kind of nothing changes the single-acting two-stage hydraulic cylinder of level impact |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869447A (en) * | 2018-09-04 | 2018-11-23 | 哈尔滨工业大学 | A kind of change effective active area hydraulic cylinder |
| CN108869447B (en) * | 2018-09-04 | 2019-11-29 | 哈尔滨工业大学 | A kind of change effective active area hydraulic cylinder |
| CN108953283A (en) * | 2018-09-18 | 2018-12-07 | 重庆市巴山液压附件厂有限公司 | A kind of synchronous hydraulic oil cylinder |
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