CN103758818B - A kind of multistage sleeve-type reverse-sequence telescopic hydraulic cylinder - Google Patents
A kind of multistage sleeve-type reverse-sequence telescopic hydraulic cylinder Download PDFInfo
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- CN103758818B CN103758818B CN201410024423.7A CN201410024423A CN103758818B CN 103758818 B CN103758818 B CN 103758818B CN 201410024423 A CN201410024423 A CN 201410024423A CN 103758818 B CN103758818 B CN 103758818B
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- 239000003921 oil Substances 0.000 claims abstract description 117
- 239000010727 cylinder oil Substances 0.000 claims abstract description 16
- 239000000446 fuel Substances 0.000 claims abstract description 14
- 230000007704 transition Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims description 2
- 239000010720 hydraulic oil Substances 0.000 abstract description 20
- 230000008602 contraction Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
A kind of multistage sleeve-type reverse-sequence telescopic hydraulic cylinder, cylinder bottom integrated valve block（14）Provided with system extension oil pipe mouth（17）, system retraction oil pipe mouth（18）, pass through oil pipe（G）Connect hydraulic control device；The oil cylinder oil return mouth of pipe（19）Pass through the oil pipe that bounces back（21）Connect first-stage cylinder inner chamber（N）, cylinder sleeve inner chamber（T）；The fuel feeding mouth of pipe（13）Connection extension oil pipe（8）Connect secondary cylinder（1）Center oilhole（L）；First-stage cylinder（6）And cylinder sleeve（9）It is respectively communicated with retraction oil pipe（21）, with the oil cylinder oil return mouth of pipe（19）Connection.During work, hydraulic oil input extension oil pipe（8）, into secondary cylinder（1）Center oilhole（L）, first-stage cylinder inner chamber is entered by open rearward end（N）, reversely promote secondary cylinder（1）Project forwardly to extreme position；Opening sequence valve（16）, hydraulic oil passes through connection flange（20）Oil-through-hole（K）Into cylinder sleeve back cavity（D）, promote first-stage cylinder（6）Extension reaches operating position, realizes the quick backward of hydraulic cylinder and stretches out.Hydraulic cylinder contraction in length 20~25%, efficiency doubles.
Description
Technical field
The present invention relates to hydraulic machinery, more particularly to sleeve-type hydraulic cylinder.
Background technology
Hydraulic cylinder is that wide variety of hydro-mechanical components, sleeve-type hydraulic cylinder are common structure shapes in the industrial production
Formula, the function engineering machinery such as lifting, push-and-pull is widely used in, stable work in work is easy to use, and structural capacity is big.Traditional sleeve
Formula hydraulic cylinder is stretched successively according to the order of cylinder body sleeve, first stretches out most thick one-level, then stretches out two level, has been stretched two level and has been stretched again
Three-level, it is from coarse to fine to stretch out successively；First contract most thin three-level during retraction, then the two level that bounces back, most thick one-level of finally retracting, by thin
To slightly bouncing back successively.This structure type and sequence of movement are although safer reliable, disclosure satisfy that stretching for common engineering machinery
Contracting need, but act it is slower, need under many circumstances first F.F., rear work enter the big flow of operating mode, long stroke it is quick
Hydraulic cylinder, for example stroke, in more than 2000mm, the stress of initial stroke is smaller, the stress of last 500~700mm strokes is maximum,
It is currently using major diameter, the piston cylinder of long stroke, powerful hydraulic pump, in stroke 1500mm or so the smaller rank of stress early stage
Section is just that most thick first-stage cylinder is stretched out, and speed is slow, consumption is big, and later stage stroke 500mm, real power stage just stretched out most thin three
Level cylinder, thrust is smaller, the course of work think it is fast also fast not, thus have impact on efficiency, have lost effect.
The content of the invention
The purpose of the present invention, just it is to provide a kind of sleeve-type hydraulic cylinder rational in infrastructure, easy for operation, is transported in early stage
The dynamic stage can quickly stretch out, and be increased in later stage power stage stress-bearing capability, and matching performance is good, and operating efficiency is high, the scope of application
Extensively.
The task of the present invention is so completed：A kind of multistage sleeve-type reverse-sequence telescopic hydraulic cylinder is designed and produced, by cylinder body
Cylinder bottom integrated valve block is connected by connection flange, connecting each combination of lumens of cylinder body with retraction oil pipe by the oil pipe that protracts is formed,
Cylinder body includes cylinder sleeve, first-stage cylinder and one-level guide sleeve, secondary cylinder and two level guide sleeve, installs sealing ring, the inner fixed dress of cylinder sleeve
If connection flange is sealed, hydraulic control one-way valve, sequence valve are installed on cylinder bottom integrated valve block, and system extension oil pipe mouth, system are set
Bounce back oil pipe mouth, the oil cylinder oil return mouth of pipe, system extension oil pipe mouth and system retraction oil pipe mouth difference connected pipes, connects hydraulic pressure control
Device processed, the oil cylinder oil return mouth of pipe are respectively communicated with first-stage cylinder inner chamber, cylinder sleeve inner chamber by the oil pipe that bounces back, cylinder bottom integrated valve block the inner
Fuel feeding mouth of pipe connection extension oil pipe, connects the center oilhole of secondary cylinder, the first-stage cylinder retraction oilhole in first-stage cylinder, the cylinder on cylinder sleeve
Set spill port is respectively communicated with retraction inner oil tube, retraction oil pipe, is connected with the oil cylinder oil return mouth of pipe on cylinder bottom integrated valve block.After cylinder sleeve
The fixed installing connection flange in end is connected with cylinder bottom integrated valve block, and connection flange is provided with axial oil-through-hole, with cylinder bottom integrated valve block
The connection of connection oilhole, the built-in one-level guide sleeve in cylinder sleeve front end, coordinate with first-stage cylinder and be set with, first-stage cylinder is installed in cylinder sleeve inner chamber
In, the rear end installing piston of first-stage cylinder, front end is equipped with two level guide sleeve, is set with secondary cylinder, and secondary cylinder is arranged in first-stage cylinder
In chamber, the leading portion of cylinder barrel is provided with radial direction oil hole, is equipped with the transition connecting pipe for being connected extension oil pipe, radial direction oil hole and secondary cylinder axial direction
Center oilhole connection, for center oilhole in the rear end face opening of secondary cylinder, the front end ball cup for the oil pipe that protracts installs vertical sky
Heart bolt, the inner fuel feeding mouth of pipe of rear end connection cylinder bottom integrated valve block, cylinder sleeve is anterior to be provided with cylinder sleeve spill port below, first-stage cylinder
First-stage cylinder retraction oilhole is provided with below cylinder barrel, the retraction oil pipe being equipped with below the transition connecting pipe connection cylinder sleeve of radial direction, bounce back oil pipe
The oil cylinder oil return mouth of pipe on the transition connecting pipe connection cylinder bottom integrated valve block of the ball cup mating of rear end vertically downward.Connection flange with
Cylinder sleeve rear end is welded and fixed, and first-stage cylinder rear end is welded and fixed piston, one-level cylinder end neck installing sealing ring, one-level guide sleeve, two
Multiple-sealed circle is installed respectively on level guide sleeve.The front of cylinder bottom integrated valve block sets sequence valve, the back side of cylinder bottom integrated valve block
Hydraulic control one-way valve is installed, the top of cylinder bottom integrated valve block outer face sets system extension oil pipe mouth, and bottom sets system retraction oil
The mouth of pipe, the top of cylinder bottom integrated valve block inner face set the fuel feeding mouth of pipe, and middle part opens up connection oilhole and the logical oil in connection flange
Mouth connection, cylinder bottom integrated valve block bottom surface set the oil cylinder oil return mouth of pipe, are equipped with transition connecting pipe, with bouncing back on oil pipe end ball cup
Hollow bolt connects.During work, system high pressure oil is protracted by the system of the compact cylinder bottom integrated valve block in hydraulic cylinder afterbody rear end
Oil pipe mouth input extension oil pipe, then the center oilhole by transition connecting pipe into secondary cylinder, pass through the open rearward end of center oilhole
Into first-stage cylinder inner chamber, the rear end inner face reinforcing to secondary cylinder, secondary cylinder is promoted to travel forward in turn.With secondary cylinder forward
Motion reaches extreme position, and when the oil pressure of hydraulic oil reaches order valve opening pressure, opening sequence valve, hydraulic oil passes through cylinder bottom collection
The oil-through-hole of connection oilhole and connection flange into valve block enters cylinder sleeve back cavity, promotes first-stage cylinder piston to march forward, first-stage cylinder to
Preceding stretching, reach operating position.So it is achieved that the quick backward of hydraulic cylinder is stretched out, completes work done.Now hydraulic control one-way valve
Can unidirectional oil-feed, it is impossible to oil return, ensure that the oil pressure of work done in hydraulic cylinder, first-stage cylinder, secondary cylinder is not bounced back.It is high during backhaul
Three tunnels of force feed point enter hydraulic cylinder, all the way into hydraulic control one-way valve, open hydraulic control one-way valve, lead to the hydraulic oil of first-stage cylinder back cavity
The oil pipe for crossing system extension oil pipe mouth and connection flows back to hydraulic oil container；Another way passes through inner oil tube and the first-stage cylinder retraction oilhole of bouncing back
Into first-stage cylinder inner chamber；Cylinder sleeve inner chamber is entered by bounce back oil pipe and the cylinder sleeve oilhole that bounces back all the way again.Enter liquid in cylinder sleeve inner chamber
During force feed, the hydraulic oil in cylinder sleeve back cavity flows back to cylinder bottom by the oil-through-hole of connection flange and the connection oilhole of cylinder bottom integrated valve block
Integrated valve block, then hydraulic oil container is flowed back to by the oil pipe of system extension oil pipe mouth and connection, secondary cylinder is first retracted, and first-stage cylinder contracts again
Return, complete a working cycles.Action is fast, efficiency high, and effect is good.
Implemented according to above-mentioned technical proposal, tested, it was demonstrated that of the invention is reasonable in design, compact-sized, flexible movements,
The early stage of hydraulic cylinder works quickly backward can be stretched out, and ability increasing, safe and convenient to use, matching performance are pushed away before power stage
It is good, operating efficiency is improved, it is applied widely, admirably achieve predetermined purpose.
Brief description of the drawings
Fig. 1 is the appearance structure schematic diagram of the present invention；
Fig. 2 is Fig. 1 A to top view；
Fig. 3 is Fig. 1 B to side view；
Fig. 4 is Fig. 2 C-C cross-sectional views；
Fig. 5 is the structural representation that secondary cylinder 1 stretches out working condition with first-stage cylinder 6.
In figure, 1-secondary cylinder, 2-transition connecting pipe, 3-ball cup, 4-hollow bolt, 5-guide holder, 6-first-stage cylinder,
7-one-level guide sleeve, 8-extension oil pipe, 9-cylinder sleeve, 10-spindle nose, 11-erection ring set, 12-extension inner oil tube, 13-
The fuel feeding mouth of pipe, 14-cylinder bottom integrated valve block, 15-plug, 16-sequence valve, 17-system extension oil pipe mouth, 18-system retraction
Oil pipe mouth, 19-oil cylinder oil return mouth of pipe, 20-connection flange, 21-bounce back oil pipe, 22-coupling nut, oil in 23-retraction
Pipe, 24-two level guide sleeve, 25-connected pipes, 26-hydraulic control one-way valve, 27-piston；A-line of vision symbol, B-line of vision symbol
Number, C-section view symbol, D-cylinder sleeve back cavity, F-sealing ring, G-oil pipe, H-first-stage cylinder back cavity, K-oil-through-hole, L-center
Oilhole, N-first-stage cylinder inner chamber, Q-first-stage cylinder retraction oilhole, R-connection oilhole, T-cylinder sleeve inner chamber, X-cylinder sleeve retraction oilhole,
Z-radial direction oil hole.
Embodiment
The embodiment of the present invention is illustrated below in conjunction with the accompanying drawings.
Refering to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the rear end of cylinder sleeve 9 is fixedly mounted with connection flange 20, is connected with cylinder bottom integrated valve block 14, cylinder sleeve
Suit first-stage cylinder 6 in 9 cylinder sleeve inner chamber T, the interior suit secondary cylinders 1 of first-stage cylinder inner chamber N of first-stage cylinder 6, the welding of the rear end of first-stage cylinder 6 are solid
Fixed piston 27, front end internal orifice sets two level guide sleeve 24, supporting with secondary cylinder 1.Secondary cylinder 1 is sleeved in the N of first-stage cylinder inner chamber,
The center oilhole L of secondary cylinder 1 secondary cylinder 1 open rearward end, center oilhole L front end inside the leading portion of secondary cylinder 1 with radially
Oilhole Z is connected, and radial direction oil hole Z is equipped with transition connecting pipe 2, is connected by hollow bolt 4 with extension inner oil tube 12, protract inner oil tube 12
It is installed in extension oil pipe 8, rear end is connected with the fuel feeding mouth of pipe 13 of the inner face of cylinder bottom integrated valve block 14.System extension oil pipe mouth 17
Connected pipes G, connect hydraulic control device.Cylinder bottom integrated valve block 14 is fixedly connected by connection flange 20 with cylinder sleeve 9, cylinder bottom collection
Into the oil-through-hole K of the connection oilhole R connection connection flanges 20 of the inner face of valve block 14.Suit one-level is oriented in the front opening of cylinder sleeve 9
Set 7, coordinate with first-stage cylinder 6 and be set with, first-stage cylinder retraction oilhole Q is opened up below the leading portion of first-stage cylinder 6, is connected by hollow bolt 4
Bounce back oil pipe 21.One-level guide sleeve 7, two level guide sleeve 24 are installed multiple-sealed circle F and sealed.Below the leading portion of cylinder sleeve 9
Cylinder sleeve retraction oilhole X is provided with, retraction oil pipe 21 is connected by attaching nut 22, the rear end ball cup 3 of retraction oil pipe 21 passes through footpath
To hollow bolt 4 connect the oil cylinder oil return mouth of pipe 19 of cylinder bottom integrated valve block 14.The front of cylinder bottom integrated valve block 14 sets sequence valve
16, the back side sets hydraulic control one-way valve 26, and system extension oil pipe mouth 17, system retraction oil pipe mouth 18 pass through oil pipe G connection liquid respectively
Pressure control device.
Refering to Fig. 5, when working condition hydraulic cylinder protracts, hydraulic control one-way valve 26 is in unidirectional opening, before system
Stretch oil pipe mouth 17 and the fuel feeding mouth of pipe 13, extension oil pipe 8, the center oilhole L input hydraulic pressures of extension inner oil tube 12 to secondary cylinder 1 be oily,
Hydraulic oil impacts the piston 27 of the rear end of first-stage cylinder 6 backward, reversely promotes secondary cylinder 1 to stretch out forwards.When secondary cylinder 1 stretches out extremely
Extreme position, sequence valve 16 control hydraulic oil by the connection oilhole R of the cylinder bottom integrated valve block 14 and oil-through-hole K of connection flange 20 to
Cylinder sleeve back cavity D input hydraulic pressures oil, promotes forward the piston 22 of the rear end of first-stage cylinder 6, pushes ahead first-stage cylinder 6, while hydraulic control list
To the input of the control system of valve 26 extension oil pipe mouth 17 hydraulic oil by the fuel feeding mouth of pipe 13 and extension inner oil tube 12 to secondary cylinder 1
Center oilhole L is persistently inputted, pressure remained steady.The hydraulic coupling of first-stage cylinder 6 is now promoted more than the hydraulic coupling of secondary cylinder 1, one
Level cylinder 6 forward, while promotes secondary cylinder 1 to push ahead.During retraction, it is oily that hydraulic control device controls hydraulic oil to be bounced back by system
The mouth of pipe 18 enters cylinder bottom integrated valve block 14, sequence valve 16 control all the way hydraulic oil pass through and bounce back oil pipe 21 and cylinder sleeve bounces back oilhole X
Into cylinder sleeve inner chamber T, first-stage cylinder 6 is promoted to bounce back；By bouncing back, oily inner tube 23 and first-stage cylinder retraction oilhole Q enters first-stage cylinder inner chamber
N, secondary cylinder 1 is promoted to bounce back.In first-stage cylinder 6 and the retraction process of secondary cylinder 1, the hydraulic pressure in first-stage cylinder back cavity H and cylinder sleeve back cavity D
Oil will be back to system extension oil pipe mouth 17, and by oil pipe G hydraulic return fuel tanks, action process is：Liquid in first-stage cylinder back cavity H
Force feed flows back to hydraulic control one-way valve 26 by the center oilhole L flow direction extension oil pipes 8 of secondary cylinder 1 by the fuel feeding mouth of pipe 13.Because of hydraulic control
Check valve 26 is that unidirectional closure can not be by the another way for the entrance cylinder bottom of oil pipe mouth 18 integrated valve block 14 that now bounced back by system
Hydraulic oil enters hydraulic control one-way valve 26, opens the opening of hydraulic control one-way valve 26, and the hydraulic oil in first-stage cylinder back cavity H can pass through two level
The center oilhole L of cylinder 1 flows back to forward extension oil pipe 8, then flows back to cylinder bottom integrated valve block 14 by the fuel feeding mouth of pipe 13, passes through liquid
Check valve 26 is controlled, hydraulic oil container is flowed back to via system extension oil pipe mouth 17 and oil pipe G.Hydraulic oil in cylinder sleeve back cavity D can pass through
The oil-through-hole K of connection flange 20 and the connection oilhole R of cylinder bottom integrated valve block 14 flow into hydraulic control one-way valve 26, are protracted via system oily
The mouth of pipe 17 and oil pipe G flow back to hydraulic oil container.Secondary cylinder 1 and first-stage cylinder 6 according to first retraction secondary cylinder 1, first-stage cylinder of retracting again 6 it is suitable
Sequence bounces back, and completes working cycles.
Coordinating operation is carried out using the present invention, in the starting stage of hydraulic cylinder action, secondary cylinder 1 is quickly stretched out, then
First-stage cylinder 6 is set progressively to stretch out, such speed is fast, efficiency high, and stressing conditions are good, save the time.Secondary cylinder 1 is first quick during retraction returns
Contracting, first-stage cylinder 6 progressively bounce back again.Compared with original hydraulic cylinder structure, the hydraulic pressure of this backward stretching structure form of the present invention
Cylinder entire length shortens 20-25%, and in light weight, consumptive material is few, and cost is low, time saving and energy saving, improves hydraulic cylinder operating mode, improves efficiency 1
More than times, service life is extended, economic and social benefits are good, the various machineries supporting available for multistage hydraulic cylinder, have wide
General application value.
A kind of multistage sleeve-type reverse-sequence telescopic hydraulic cylinder, cylinder bottom integrated valve block（14）Provided with system extension oil pipe mouth（17）、
System retraction oil pipe mouth（18）, pass through oil pipe（G）Connect hydraulic control device；The oil cylinder oil return mouth of pipe（19）Pass through the oil pipe that bounces back
（21）Connect first-stage cylinder inner chamber（N）, cylinder sleeve inner chamber（T）；The fuel feeding mouth of pipe（13）Connection extension oil pipe（8）Connect secondary cylinder（1）'s
Center oilhole（L）；First-stage cylinder（6）And cylinder sleeve（9）It is respectively communicated with retraction oil pipe（21）, with the oil cylinder oil return mouth of pipe（19）Connection.Work
When making, hydraulic oil input extension oil pipe（8）, into secondary cylinder（1）Center oilhole（L）, entered by open rearward end in first-stage cylinder
Chamber（N）, reversely promote secondary cylinder（1）Project forwardly to extreme position；Opening sequence valve（16）, hydraulic oil passes through connection flange（20）'s
Oil-through-hole（K）Into cylinder sleeve back cavity（D）, promote first-stage cylinder（6）Extension reaches operating position, realizes the quick backward of hydraulic cylinder
Stretch out.Hydraulic cylinder contraction in length 20~25%, efficiency doubles.
Claims (4)
1. a kind of multistage sleeve-type reverse-sequence telescopic hydraulic cylinder, it is characterised in that be that connection flange is passed through by cylinder body（20）Connect cylinder bottom
Integrated valve block（14）, pass through the oil pipe that protracts（8）With retraction oil pipe（21）Connect each combination of lumens of cylinder body to form, cylinder body includes cylinder
Set（9）, first-stage cylinder（6）And one-level guide sleeve（7）, secondary cylinder（1）And two level guide sleeve（24）, install sealing ring（F）, cylinder sleeve
（9）The fixed installing connection flange in the inner（20）Sealing, cylinder bottom integrated valve block（14）Upper installing hydraulic control one-way valve（26）, sequence valve
（16）, and system extension oil pipe mouth is set（17）, system retraction oil pipe mouth（18）, the oil cylinder oil return mouth of pipe（19）, system extension oil
The mouth of pipe（17）With system retraction oil pipe mouth（18）Connected pipes (G) respectively, connect hydraulic control device, the oil cylinder oil return mouth of pipe（19）
Pass through the oil pipe that bounces back（21）It is respectively communicated with first-stage cylinder inner chamber（N）, cylinder sleeve inner chamber（T）, cylinder bottom integrated valve block（14）Inner fuel feeding
The mouth of pipe（13）Connection extension oil pipe（8）, connect secondary cylinder（1）Center oilhole（L）, first-stage cylinder（6）On first-stage cylinder retraction oil
Hole（Q）, cylinder sleeve（9）On cylinder sleeve spill port（X）It is respectively communicated with retraction inner oil tube（23）, retraction oil pipe（21）, integrated with cylinder bottom
Valve block（14）On the oil cylinder oil return mouth of pipe（19）Connection.
2. according to the multistage sleeve-type reverse-sequence telescopic hydraulic cylinder described in claim 1, it is characterised in that described cylinder sleeve（9）Rear end
Fixed installing connection flange（20）With cylinder bottom integrated valve block（14）Connection, connection flange（20）It is provided with axial oil-through-hole（K）, with
Cylinder bottom integrated valve block（14）Connection oilhole（R）Connection, cylinder sleeve（9）The built-in one-level guide sleeve in front end（7）, with first-stage cylinder（6）Match somebody with somebody
Trap fills, first-stage cylinder（6）It is installed in cylinder sleeve inner chamber（T）In, first-stage cylinder（6）Rear end installing piston（27）, front end is equipped with two level
Guide sleeve（24）, with secondary cylinder（1）Suit, secondary cylinder（1）It is arranged on first-stage cylinder inner chamber（N）In, the leading portion of cylinder barrel is provided with radially
Oilhole（Z）, the transition connecting pipe with being connected extension oil pipe (8)（2）It is equipped, radial direction oil hole（Z）With secondary cylinder（1）The center oil of axial direction
Hole（L）Connection, center oilhole（L）In secondary cylinder（1）Rear end face opening, protract oil pipe（8）Front end ball cup（3）Installing is hung down
Straight hollow bolt（4）, rear end connection cylinder bottom integrated valve block（14）The inner fuel feeding mouth of pipe（13）, cylinder sleeve（9）It is anterior to open below
There is cylinder sleeve spill port（X）, first-stage cylinder（6）Cylinder barrel below be provided with first-stage cylinder retraction oilhole（Q）, the transition connecting pipe of equipped radial direction
（2）Connect cylinder sleeve（9）Following retraction oil pipe（21）, bounce back oil pipe（21）The ball cup of rear end（3）The mistake of mating vertically downward
Cross adapter（2）Connect cylinder bottom integrated valve block（14）On the oil cylinder oil return mouth of pipe（19）.
3. according to the multistage sleeve-type reverse-sequence telescopic hydraulic cylinder described in claim 2, it is characterised in that described connection flange
（20）With cylinder sleeve（9）Rear end is welded and fixed, first-stage cylinder（6）Rear end is welded and fixed piston（27）, first-stage cylinder（6）Hold neck installing close
Seal（F）, one-level guide sleeve（7）, two level guide sleeve（24）It is upper to install multiple-sealed circle respectively（F）.
4. according to the multistage sleeve-type reverse-sequence telescopic hydraulic cylinder described in claim 1, it is characterised in that described cylinder bottom pile-up valve
Block（14）Front set sequence valve（16）, cylinder bottom integrated valve block（14）The back side installing hydraulic control one-way valve（26）, cylinder bottom integrates
Valve block（14）The top of outer face sets system extension oil pipe mouth（17）, bottom sets system retraction oil pipe mouth（18）, cylinder bottom collection
Into valve block（14）The top of inner face sets the fuel feeding mouth of pipe（13）, middle part opens up connection oilhole（R）With connection flange（10）On
Oil-through-hole（K）Connection, cylinder bottom integrated valve block（14）Bottom surface sets the oil cylinder oil return mouth of pipe（19）, it is equipped with transition connecting pipe（2）, with retraction
Oil pipe（21）End ball cup（3）On hollow bolt（4）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024423.7A CN103758818B (en) | 2014-01-20 | 2014-01-20 | A kind of multistage sleeve-type reverse-sequence telescopic hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410024423.7A CN103758818B (en) | 2014-01-20 | 2014-01-20 | A kind of multistage sleeve-type reverse-sequence telescopic hydraulic cylinder |
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| Publication Number | Publication Date |
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| CN103758818A CN103758818A (en) | 2014-04-30 |
| CN103758818B true CN103758818B (en) | 2017-12-22 |
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| CN201410024423.7A Expired - Fee Related CN103758818B (en) | 2014-01-20 | 2014-01-20 | A kind of multistage sleeve-type reverse-sequence telescopic hydraulic cylinder |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019081B (en) * | 2014-05-15 | 2016-09-14 | 周泓宇 | Double-acting multistage hydraulic cylinder |
| CN107061412A (en) * | 2017-04-01 | 2017-08-18 | 江苏高德液压机械有限公司 | Telescopic oil cylinder |
| CN107889725A (en) * | 2017-11-27 | 2018-04-10 | 王建锋 | More piece automatic telescopic sprinkling irrigation delivery port |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2763012Y (en) * | 2005-01-10 | 2006-03-08 | 胡世璇 | Integrated control system type end cover of hydraulic cylinder |
| CN2765763Y (en) * | 2004-12-15 | 2006-03-22 | 胡世璇 | Vertical compression type injection machine mold clamp mechanism |
| CN101893017A (en) * | 2010-07-22 | 2010-11-24 | 泸州众大科技液压件有限公司 | Multi-functional integrated type hydraulic cylinder |
| CN203685758U (en) * | 2014-01-20 | 2014-07-02 | 山东弘发兴凯实业有限公司 | Multi-stage sleeve type negative sequence telescopic hydraulic cylinder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57127108A (en) * | 1980-12-02 | 1982-08-07 | Yunitsuku:Kk | Three-staged cylinder device |
| JPS59174300A (en) * | 1983-03-22 | 1984-10-02 | Aisin Seiki Co Ltd | Hydraulic cylinder device |
-
2014
- 2014-01-20 CN CN201410024423.7A patent/CN103758818B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2765763Y (en) * | 2004-12-15 | 2006-03-22 | 胡世璇 | Vertical compression type injection machine mold clamp mechanism |
| CN2763012Y (en) * | 2005-01-10 | 2006-03-08 | 胡世璇 | Integrated control system type end cover of hydraulic cylinder |
| CN101893017A (en) * | 2010-07-22 | 2010-11-24 | 泸州众大科技液压件有限公司 | Multi-functional integrated type hydraulic cylinder |
| CN203685758U (en) * | 2014-01-20 | 2014-07-02 | 山东弘发兴凯实业有限公司 | Multi-stage sleeve type negative sequence telescopic hydraulic cylinder |
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| CN103758818A (en) | 2014-04-30 |
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