CN106246642A - A kind of oil circuit control to pilot operated valve device implements the locking loop individually controlled - Google Patents
A kind of oil circuit control to pilot operated valve device implements the locking loop individually controlled Download PDFInfo
- Publication number
- CN106246642A CN106246642A CN201610837657.2A CN201610837657A CN106246642A CN 106246642 A CN106246642 A CN 106246642A CN 201610837657 A CN201610837657 A CN 201610837657A CN 106246642 A CN106246642 A CN 106246642A
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- CN
- China
- Prior art keywords
- valve
- control
- oil
- hydraulic
- way
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- 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.)
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Classifications
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- 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
- F15B15/26—Locking mechanisms
Abstract
The present invention relates to a kind of locking loop, implement the locking loop individually controlled particularly to a kind of oil circuit control to pilot operated valve device；Including double acting single-piston cylinder 1, hydraulic control one-way valve 2, three position four-way directional control valve 3, direct acting type overflow valve 4, unidirectional quantitative hydraulic pump 5, wherein double acting single-piston cylinder 1 is connected by concatenation with three position four-way directional control valve 3 and unidirectional quantitative hydraulic pump 5, hydraulic control one-way valve 2 (comprises two hydraulic control one-way valves 21, 22) it is connected to the oil-feed of double acting single-piston cylinder 1 and goes out on oil return line, what direct acting type overflow valve 4 was connected to unidirectional quantitative hydraulic pump 5 goes out on oil return line, characterized by further comprising two bi-bit bi-pass reversal valves 6, 7, two described bi-bit bi-pass reversal valves are connected on the oil circuit control between hydraulic control one-way valve and unidirectional quantitative hydraulic pump 5；Instant invention overcomes the deficiency in existing locking loop, the hydraulic component of increase is less, and the technical costs of input is relatively low, has huge market application foreground.
Description
Technical field
The present invention relates to a kind of locking loop, implement the lock individually controlled particularly to a kind of oil circuit control to pilot operated valve device
Tight loop.
Background technology
Hydraulic control check valve (being called for short pilot operated valve device or hydraulic control one-way valve) is dependent on controlling fluid pressure, can make unidirectional
The valve of valve reverse circulated.This valve occupies more important status in the hydraulic prop equipment of coal mine machinery.Hydraulic control one-way valve with
Common check valve be a difference in that an oil circuit control many, when oil circuit control access failure pressure oil liquid, hydraulic control one-way valve
Equally working as common check valve, pressure oil only flows to oil-out from oil-in, it is impossible to reverse flow.When oil circuit control has control
During pressing pressure input, piston mandril moves right under pressure oil effect, backs down check valve with push rod, makes oil inlet and outlet connect.
If oil-out oil pressure just can make fluid reverse flow more than oil-in oil pressure.Pilot operated valve device mainly has following 5 application:
(1) pressure is kept
Spool-type valves has clearance leakage phenomenon, can only short time pressurize.When there being pressurize requirement, can be on oil circuit
Add a hydraulic control one-way valve, utilize the tightness that cone valve cuts out, make the long-time pressurize of oil circuit.
(2) " supporting " of hydraulic cylinder
In vertical solution cylinder pressure, due to guiding valve and the leakage of pipe, under the gravity of piston and piston rod, piston may be caused
Glide with piston rod.Hydraulic control one-way valve is connected to the oil circuit of hydraulic cylinder cavity of resorption, then can prevent the activity such as hydraulic cylinder piston and slide block
Part glides.
(3) hydraulic locking cylinder is realized
When reversal valve is in middle position, two hydraulic control one-way valves are closed, can the fluid in tight closure hydraulic cylinder two chamber, at this moment
Piston cannot produce movement because of External Force Acting.
(4) big flow oil extraction
Effective work area in hydraulic cylinder two chamber differs greatly.When piston is return, hydraulic cylinder right chamber oil drain quantity increases suddenly
Greatly, now according to the guiding valve of low discharge, throttling action can be produced, limit the astern speed of piston；If adding hydraulic control one-way valve,
When hydraulic cylinder piston retreats, control pressure oil and hydraulic control one-way valve is opened, just can successfully right chamber fluid be discharged.
(5) oil charge valve is made
During the piston of vertical solution cylinder pressure drops at high speeds, because of hydraulic oil and the effect of deadweight, cause decline rapidly, produce
Life is emptied and negative pressure, it is necessary to set up recharging oil device.Hydraulic control one-way valve uses as oil charge valve, to complete repairing function.
Locking loop relatively common in hydraulic circuit, locking loop function be by cut off executive component oil-feed,
Oil discharge passage makes it be parked in optional position, and play occurs because of extraneous factor after preventing stop motion.As it is shown in figure 1, it is existing
Some locking loops include double acting single-piston cylinder 1, hydraulic control one-way valve 2, three position four-way directional control valve 3, direct acting type overflow valve 4, list
To quantitative hydraulic pump 5, wherein double acting single-piston cylinder 1 passes through, with three position four-way directional control valve 3 and unidirectional quantitative hydraulic pump 5, the company of concatenation
Connecing, hydraulic control one-way valve 2 (comprising two hydraulic control one-way valves 21,22) is connected to the oil-feed of double acting single-piston cylinder 1 and fuel-displaced
On loop, direct acting type overflow valve 4 is connected to the going out on oil return line of unidirectional quantitative hydraulic pump 5.Two liquid that hydraulic control one-way valve 2 comprises
Control check valve 21,22 becomes a hydraulic lock, and the most existing connected mode makes hydraulic control one-way valve 21,22 open, simultaneously simultaneously
Closing, this kind of locking loop there is problems of being accurately controlled the position of double acting single-piston rod, can not prevent double
Effect single-piston rod generation play.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide the lock that a kind of oil circuit control to pilot operated valve device is implemented individually to control
Tight loop, makes the hydraulic control one-way valve 21,22 in locking loop realize as required being separately turned on, closing respectively, reaches accurately to control
The effect of double acting single-piston rod position processed.
The technical scheme is that and be achieved in that: a kind of oil circuit control to pilot operated valve device implements the locking individually controlled
Loop, including double acting single-piston cylinder, hydraulic control one-way valve, three position four-way directional control valve, direct acting type overflow valve, unidirectional quantitative hydraulic
Pump, wherein double acting single-piston cylinder is connected by concatenation with three position four-way directional control valve and unidirectional quantitative hydraulic pump, hydraulic control one-way valve
(comprising two hydraulic control one-way valves) is connected to the oil-feed of double acting single-piston cylinder and goes out on oil return line, and direct acting type overflow valve is even
Be connected on unidirectional quantitative hydraulic pump goes out on oil return line, it is characterised in that also include two bi-bit bi-pass reversal valves, described two
Bi-bit bi-pass reversal valve is connected on the oil circuit control between hydraulic control one-way valve and unidirectional quantitative hydraulic pump.
Present invention have the advantage that the stable stopping achieving double acting single-piston cylinder, make the locking of hydraulic cylinder more
Accurately.
Accompanying drawing explanation
Fig. 1 is the structural representation in the existing locking loop with pilot operated valve device.
Fig. 2 is the structural representation in the locking loop that the oil circuit control to pilot operated valve device is implemented individually to control.
Detailed description of the invention
Describe the detailed description of the invention of the present invention below in conjunction with the accompanying drawings in detail.
Embodiment:
Seeing Fig. 2, a kind of oil circuit control to pilot operated valve device implements the locking loop individually controlled, including double acting single-piston
Cylinder 1, hydraulic control one-way valve 2, three position four-way directional control valve 3, direct acting type overflow valve 4, unidirectional quantitative hydraulic pump 5, wherein double acting list is lived
Plug cylinder 1 is connected by concatenation with three position four-way directional control valve 3 and unidirectional quantitative hydraulic pump 5, and hydraulic control one-way valve 2 (comprises two hydraulic controls
Check valve 21,22) it is connected to the oil-feed of double acting single-piston cylinder 1 and goes out on oil return line, direct acting type overflow valve 4 is connected to list
Go out on oil return line to quantitative hydraulic pump 5, it is characterised in that also include two bi-bit bi-pass reversal valves 6,7, described two two
Position two way selected valve is connected on the oil circuit control between hydraulic control one-way valve and unidirectional quantitative hydraulic pump 5.
Work process is as follows:
Seeing Fig. 2, three position four-way directional control valve 3 has three operating positions, and its label is 0,1 and 2 respectively, and position 0 is off
Position；Bi-bit bi-pass reversal valve 6,7 has two operating positions, and its label is 0 and 1 respectively, and position 0 is off position.Work as double cropping
When stretching out with the piston rod of single-piston cylinder 1, three position four-way directional control valve 3 is in position 1, and bi-bit bi-pass reversal valve 6 is in working position
Setting to 0, bi-bit bi-pass reversal valve 7 is in operating position 1, and the hydraulic control one-way valve 21,22 that hydraulic control one-way valve 2 comprises is all in open position
Putting, the hydraulic oil that unidirectional quantitative hydraulic pump 5 pumps out enters the rodless cavity of double acting single-piston cylinder 1, and double acting single-piston cylinder 1 has bar
Fluid in chamber flows back to fuel tank via hydraulic control one-way valve 22 and three position four-way directional control valve 3.When piston rod reaches precalculated position, pass
Sensor beams back signal to controller, and controller makes bi-bit bi-pass reversal valve 7 be in operating position 0, at this moment hydraulic control one-way valve 22 sections
Only, the hydraulic oil that the most unidirectional quantitative hydraulic pump 5 pumps out goes successively to the rodless cavity of double acting single-piston cylinder 1, in rodless cavity
After oil pressure reaches setting value, corresponding sensor beams back signal to controller, and controller makes three position four-way directional control valve 3 be in work
Position 0, the hydraulic oil that the most unidirectional quantitative hydraulic pump 5 pumps out returns fuel tank via direct acting type overflow valve 4, at hydraulic control one-way valve 21
Oil pressure in cut-off state, rodless cavity, more than the oil pressure in rod chamber, makes the piston rod of double acting single-piston cylinder 1 be in stable
Operating position.In like manner, when the piston rod of double acting single-piston cylinder 1 returns, participate in work is three position four-way directional control valve 3 He
Bi-bit bi-pass reversal valve 6.
The present invention can more be accurately controlled the flexible, when the load acted on piston rod goes out of double acting single-piston cylinder 1
When now fluctuating, because rodless cavity and rod chamber have pressure reduction, it is achieved that the stable stopping of double acting single-piston cylinder, make hydraulic cylinder
Lock more accurate.Instant invention overcomes the deficiency in existing locking loop, the hydraulic component of increase is less, the technical costs of input
Relatively low, there is huge market application foreground.
Claims (1)
1. the oil circuit control to pilot operated valve device implements the locking loop individually controlled, including double acting single-piston cylinder (1), hydraulic control
Check valve (2), three position four-way directional control valve (3), direct acting type overflow valve (4), unidirectional quantitative hydraulic pump (5), wherein double acting list is lived
Plug cylinder (1) is connected by concatenation with three position four-way directional control valve (3) and unidirectional quantitative hydraulic pump (5), and hydraulic control one-way valve (2) connects respectively
Being connected on the oil-feed of double acting single-piston cylinder (1) and go out on oil return line, direct acting type overflow valve (4) is connected to unidirectional quantitative hydraulic pump
(5) go out on oil return line, it is characterised in that also include that two bi-bit bi-pass reversal valves (6,7), two described bi-bit bi-pass change
It is connected on the oil circuit control between hydraulic control one-way valve and unidirectional quantitative hydraulic pump (5) to valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837657.2A CN106246642A (en) | 2016-09-21 | 2016-09-21 | A kind of oil circuit control to pilot operated valve device implements the locking loop individually controlled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837657.2A CN106246642A (en) | 2016-09-21 | 2016-09-21 | A kind of oil circuit control to pilot operated valve device implements the locking loop individually controlled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106246642A true CN106246642A (en) | 2016-12-21 |
Family
ID=57598985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610837657.2A Pending CN106246642A (en) | 2016-09-21 | 2016-09-21 | A kind of oil circuit control to pilot operated valve device implements the locking loop individually controlled |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106246642A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059094A (en) * | 2020-01-09 | 2020-04-24 | 长春工业大学 | Limit screw rod rotation decoupling type mechanical rodless locking cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512078A (en) * | 2002-12-27 | 2004-07-14 | 上海液二液压件制造有限公司 | Hydraulic system of bending machine |
| CN1584346A (en) * | 2004-06-16 | 2005-02-23 | 浙江大学 | Shielding spiral conveyor hydraulic system with proportional feedback control and accumulator oil supplementary |
| US20060163508A1 (en) * | 2002-12-27 | 2006-07-27 | Hitachi Construction Machinery Co., Ltd. | Hydraulic circuit of working truck |
| CN202064326U (en) * | 2011-04-27 | 2011-12-07 | 扬州市飞龙气动液压设备有限公司 | Synchronous split hydraulic hoist |
| CN105822615A (en) * | 2016-04-29 | 2016-08-03 | 泰富重工制造有限公司 | Hydraulic control system of engineering machinery amplitude change mechanism |
| CN206221419U (en) * | 2016-09-21 | 2017-06-06 | 长春工业大学 | A kind of oil circuit control to pilot operated valve device implements the locking loop of individually control |
-
2016
- 2016-09-21 CN CN201610837657.2A patent/CN106246642A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512078A (en) * | 2002-12-27 | 2004-07-14 | 上海液二液压件制造有限公司 | Hydraulic system of bending machine |
| US20060163508A1 (en) * | 2002-12-27 | 2006-07-27 | Hitachi Construction Machinery Co., Ltd. | Hydraulic circuit of working truck |
| CN1584346A (en) * | 2004-06-16 | 2005-02-23 | 浙江大学 | Shielding spiral conveyor hydraulic system with proportional feedback control and accumulator oil supplementary |
| CN202064326U (en) * | 2011-04-27 | 2011-12-07 | 扬州市飞龙气动液压设备有限公司 | Synchronous split hydraulic hoist |
| CN105822615A (en) * | 2016-04-29 | 2016-08-03 | 泰富重工制造有限公司 | Hydraulic control system of engineering machinery amplitude change mechanism |
| CN206221419U (en) * | 2016-09-21 | 2017-06-06 | 长春工业大学 | A kind of oil circuit control to pilot operated valve device implements the locking loop of individually control |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059094A (en) * | 2020-01-09 | 2020-04-24 | 长春工业大学 | Limit screw rod rotation decoupling type mechanical rodless locking cylinder |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161221 |
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| RJ01 | Rejection of invention patent application after publication |