CN207229508U - 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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- CN207229508U CN207229508U CN201721315262.2U CN201721315262U CN207229508U CN 207229508 U CN207229508 U CN 207229508U CN 201721315262 U CN201721315262 U CN 201721315262U CN 207229508 U CN207229508 U CN 207229508U
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Abstract
The utility model 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 equipped with hydraulic fluid port（14）, first stage piston bar（3）It is equipped with the oil-through-hole of two cavitys of connection（15）, the first cavity（12）Annulus area and second piston rod（2）Cross-sectional area it is equal, the utility model, 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 at the same time, shorten the working time of hydraulic cylinder, improve work efficiency.
Description
Technical field：
A kind of single-acting two-stage hydraulic cylinder is the utility model is related to, more particularly to a kind of nothing changes level impact, two-stage piston rod
The hydraulic cylinder of action at the same time.
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 is first
Stretch out, 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, bar footpath
When the small piston rod in the fully extended then bar footpath of big piston rod starts to stretch out（From large to small, i.e., active area is by becoming greatly in bar footpath
It is small）, at this time（When oil cylinder changes grade）The operating pressure moment increase of oil cylinder, and flow is constant, flow active area diminishes
In the case of, piston rod movement speed moment accelerates, and produces larger pressure and flow attack to hydraulic cylinder, influences the steady of hydraulic cylinder
It is qualitative；Traditional single-acting two-stage hydraulic cylinder piston rod extends and retracts successively, the actuation time length of hydraulic cylinder, and work efficiency is low.
Utility model content：
A kind of stable, work is provided the purpose of the utility model is to overcome the deficiency of above-mentioned prior art
The nothing that time is short, work efficiency is high, two-stage piston rod acts at the same time changes the single-acting two-stage hydraulic cylinder of level impact.
The purpose of this utility model can be reached by following measure：A kind of nothing changes the single-acting two-stage hydraulic pressure of level impact
Cylinder, it includes cylinder barrel, and cylinder barrel is threadedly coupled protecgulum, it is characterised in that cylinder barrel is internally provided with first stage piston bar, in first stage piston bar
Equipped with second piston rod, baffle ring is housed on second piston rod, the first cavity, first stage piston are formed between cylinder barrel and first stage piston bar
The second cavity is formed between bar and second piston rod, cylinder barrel is equipped with hydraulic fluid port, and first stage piston bar is equipped with oil-through-hole, the first cavity
It is connected by oil-through-hole with the second cavity, 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 this utility model, hole is housed between one end of the first stage piston bar and cylinder barrel
With sealing ring, the second axle sealing ring, the second dustband are housed between the other end and second piston rod.
In order to further realize the purpose of this utility model, sealed between the protecgulum and cylinder barrel by O-ring, it is preceding
Lid inner wall is equipped with the first axle sealing ring, the second dustband.
The utility model can produce following good effect compared with the prior art：One, have by hydraulic cylinder first stage piston bar
Rod cavity annulus area is equal with second piston rod active area, it is ensured that hydraulic cylinder two-stage piston rod while synchronization action；Two, by
Acted at the same time in hydraulic cylinder two-stage piston rod, there is no traditional large and small piston rod of two-stage hydraulic cylinder sequentially to stretch out successively, changes a grade mistake
The problem of impact vibration of pressure and speed is produced in journey, influences stability；Three, since two-stage piston rod acts at the same time, hydraulic pressure
Actuation time of cylinder more traditional single-acting two-stage hydraulic cylinder（Large and small piston rod sequentially extends and retracts successively）Actuation time
Short, work efficiency is high.The utility model is mainly used in that installation dimension is small, and actuating range is big, and when action is required without impact, action
The few occasion of time requirement.
Brief description of the drawings：
Fig. 1 is structure diagram when the utility model oil cylinder is fully retracted；
Fig. 2 is structure diagram when the utility model oil cylinder is fully extended.
Embodiment：Specific embodiment of the present utility model 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, cylinder barrel
1 is threadedly coupled protecgulum 4, and protecgulum 4 realizes the static seal with cylinder barrel 1 by O-ring 6；4 inner wall of protecgulum is sealed equipped with first axle
Enclose the 9, second dustband 7；Cylinder barrel 1 is internally provided with first stage piston bar 3, and second piston rod 2 is equipped with first stage piston bar 3, and level-one is lived
Hole sealing ring 11 is housed, equipped with the second axis with close between the other end and second piston rod 2 between one end of stopper rod 3 and cylinder barrel 1
Seal 10, the second dustband 8；Baffle ring 5 is housed on second piston rod 2, limits the stroke of oil cylinder.Cylinder barrel 1 and first stage piston bar 3 it
Between form the first cavity 12, the second cavity 13, the annular of the first cavity 12 are formed between first stage piston bar 3 and second piston rod 2
Area is equal with the active area of second piston rod 2, and cylinder barrel 1 is equipped with hydraulic fluid port 14, and first stage piston bar 3 is equipped with oil-through-hole 15,
First cavity 12 is connected by oil-through-hole 15 with the second cavity 13.
Operation principle：
When the logical oil of hydraulic fluid port 14, hydraulic oil promotes first stage piston bar 3 protruding, the first cavity 12 by oil-through-hole 15 with
Second cavity 13 is connected, and the hydraulic oil in the first cavity 12 is entered in the second cavity 13 at this time, and second piston rod 2 is to overhanging
Go out；Since the annulus area of the first cavity 12 is equal with the active area of second piston rod 2, while discharge in the first cavity 12
Hydraulic oil completely into in the second sky 13, therefore first stage piston bar 3 with 2 outwardly directed equal length of second piston rod (i.e.
Speed is equal), realize first stage piston bar 3 and second piston rod 2 while be synchronized with the movement, two-stage piston rod is fully extended to arrive front end
(see Fig. 2), a grade process is changed there is no traditional two-stage hydraulic cylinder.When under external force, when hydraulic cylinder is retracted, the second cavity 13
Interior hydraulic oil is entered in the first cavity 12 by oil-through-hole 15, due to the active area and the first cavity of second piston rod 2
12 annulus area is equal, and the hydraulic oil in the first cavity 13 completely into in the first cavity 12, realize same by two-stage piston rod
When be synchronously fully retracted, hydraulic cylinder is retracted into most short (see Fig. 1).This hydraulic cylinder two-stage piston rod is equal during stretching out and retracting
There is no the pressure and velocity variations that produce of changing during level of traditional two-stage hydraulic cylinder.
Embodiment above is only that the preferred embodiment of the utility model is described, other preferred embodiments
Do not tire out one by one herein and state, and not the scope of the utility model is defined, do not departing from the spirit of the design of the utility model
Under the premise of, various modifications and improvement that this area ordinary skill technical staff makes the technical solution of the utility model should all
Fall within the protection domain that claims of the utility model determine.
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）It is internally provided with first stage piston bar（3）, first stage piston bar（3）It is interior to be equipped 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 equipped with hydraulic fluid port（14）, first stage piston bar（3）On
Equipped 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 dustband（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）Inner wall 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 |
|---|---|---|---|
| CN201721315262.2U CN207229508U (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 |
|---|---|---|---|
| CN201721315262.2U CN207229508U (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 |
|---|---|
| CN207229508U true CN207229508U (en) | 2018-04-13 |
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ID=61850502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721315262.2U Active CN207229508U (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) | CN207229508U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542723A (en) * | 2017-10-13 | 2018-01-05 | 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 |
| CN110594237A (en) * | 2019-09-27 | 2019-12-20 | 武汉理工大学 | Simple energy-saving hydraulic cylinder with variable stroke |
| CN113969917A (en) * | 2021-10-26 | 2022-01-25 | 马庆国 | Multistage hydraulic cylinder |
| CN113969915A (en) * | 2021-10-26 | 2022-01-25 | 马庆国 | Multistage hydraulic cylinder capable of improving bearing capacity |
| CN113969916A (en) * | 2021-10-26 | 2022-01-25 | 马庆国 | Low-pressure-maintaining multi-stage hydraulic cylinder |
-
2017
- 2017-10-13 CN CN201721315262.2U patent/CN207229508U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542723A (en) * | 2017-10-13 | 2018-01-05 | 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 |
| CN110594237A (en) * | 2019-09-27 | 2019-12-20 | 武汉理工大学 | Simple energy-saving hydraulic cylinder with variable stroke |
| CN113969917A (en) * | 2021-10-26 | 2022-01-25 | 马庆国 | Multistage hydraulic cylinder |
| CN113969915A (en) * | 2021-10-26 | 2022-01-25 | 马庆国 | Multistage hydraulic cylinder capable of improving bearing capacity |
| CN113969916A (en) * | 2021-10-26 | 2022-01-25 | 马庆国 | Low-pressure-maintaining multi-stage hydraulic cylinder |
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