CN106764022A - A kind of hydraulicdirectional control valve powers off holding meanss - Google Patents
A kind of hydraulicdirectional control valve powers off holding meanss Download PDFInfo
- Publication number
- CN106764022A CN106764022A CN201611039648.5A CN201611039648A CN106764022A CN 106764022 A CN106764022 A CN 106764022A CN 201611039648 A CN201611039648 A CN 201611039648A CN 106764022 A CN106764022 A CN 106764022A
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- China
- Prior art keywords
- lever
- transposition
- control valve
- hydraulicdirectional control
- magnetic valve
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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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K35/00—Means to prevent accidental or unauthorised actuation
- F16K35/10—Means to prevent accidental or unauthorised actuation with locking caps or locking bars
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a kind of hydraulicdirectional control valve power-off holding meanss, it includes：First axle bearing；Second hinge bearing；Transposition lever, its one end is articulated with first axle bearing；The end of the valve element of hydraulicdirectional control valve relies on the side of transposition lever；A lock pin is convexly equipped with transposition lever；Transposition magnetic valve, end and the other end of transposition lever of its valve element are hinged, and it drives transposition lever to be swung；Restoring lever, its one end is articulated with second hinge bearing, and its other end is convexly equipped with a pintle hook lock；In original state, the lock pin on transposition lever acts against the bottom on the inclined-plane of the pintle hook lock of restoring lever；And reset magnetic valve, it is hinged in the middle part of the end of its valve element and restoring lever, it drives restoring lever to be swung.Power-off of the cooperation of the pintle hook lock of lock pin and restoring lever that the present invention passes through the lever that replaces to realize hydraulicdirectional control valve replaces and keeps function, its simple structure, easily implementation and power and energy saving.
Description
Technical field
The present invention relates to hydraulicdirectional control valve field, more particularly to a kind of hydraulicdirectional control valve power-off holding meanss.
Background technology
Some hydraulicdirectional control valves are needed to maintain transposition working condition for a long time in hydraulic system, and the requirement is met at present
Hydraulicdirectional control valve has following 4 kinds：Hand-operated direction valve, return of stroke valve, solenoid directional control valve, electro-hydraulic reversing valve with steel ball positioning.
Hand-operated direction valve wherein with steel ball positioning needs artificial operation, and manual reverse of direction, labour cost is high, and the reaction time is relatively delayed
Slowly, inconvenience is used for industry automatic control occasion.Return of stroke valve, should by buting iron or the actuated by cams commutation on mechanical moving element
For the equipment with return of stroke mechanism, belong to passive commutation, it independently can not be used as reversal valve.Solenoid directional control valve
All it is that the magnetic force that the coil by being powered is produced drives valve element to commutate with electro-hydraulic reversing valve, can be used for automatic control system, but
This needs persistently just can be such that reversal valve maintains on the position of commutation coil electricity to work, so that it is more to consume electric energy, for open country
The inconvenient engineer equipment of outer or other electricity consumptions is totally unfavorable.
The information for being disclosed in the background section is merely intended to increase the understanding to general background of the invention, without answering
In being considered as recognizing or imply in any form that the information structure has been the prior art well known to persons skilled in the art.
The content of the invention
It is an object of the invention to provide a kind of hydraulicdirectional control valve power-off holding meanss, so as to overcome existing electromagnetism or electricity
Liquid reversal valve needs persistently could persistently maintain the shortcoming worked under transposition state to coil electricity.
To achieve the above object, the invention provides a kind of hydraulicdirectional control valve power-off holding meanss, wherein, including：First
Rocker bar bearing；Second hinge bearing；Transposition lever, its one end in the way of swing can be articulated with the first axle branch
On seat；The end of the valve element of hydraulicdirectional control valve relies on the side of the transposition lever；It is convexly equipped with the body of rod of the transposition lever
One lock pin；Transposition magnetic valve, the end of its valve element is hinged with the other end of the transposition lever, and the transposition magnetic valve passes through valve element
Retraction and stretch driving it is described transposition lever swung；Restoring lever, its one end is with can be along the transposition lever
The mode that length direction is swung is articulated with the second hinge bearing, and the other end of the restoring lever is convexly equipped with a lock
Card, the pintle hook lock is provided with an inclined-plane；In original state, the lock pin on the transposition lever acts against the restoring lever
The pintle hook lock the inclined-plane bottom；And reset magnetic valve, the end of its valve element is cut with scissors with the middle part of the restoring lever
Connect, the reset magnetic valve passes through the retraction of valve element and stretch to drive the restoring lever to be swung.
Preferably, in above-mentioned technical proposal, the pintle hook lock is in triangle convex.
Preferably, in above-mentioned technical proposal, another face opposite with the inclined-plane is vertical plane on the pintle hook lock.
Preferably, in above-mentioned technical proposal, one end of the transposition lever passes through first connecting rod and the first axle branch
Seat is hinged.
Preferably, in above-mentioned technical proposal, one end of the transposition lever is hinged with one end of the first connecting rod,
And the other end of the first connecting rod is hinged with the first axle bearing.
Preferably, in above-mentioned technical proposal, one end of the restoring lever passes through second connecting rod and the second hinge branch
Seat is hinged.
Preferably, in above-mentioned technical proposal, one end of the restoring lever is hinged with one end of the second connecting rod,
And the other end of the second connecting rod is hinged with the second hinge bearing.
Preferably, in above-mentioned technical proposal, the transposition magnetic valve and the reset magnetic valve are supplied by same battery
Electricity.
Preferably, in above-mentioned technical proposal, the positive pole of the transposition magnetic valve and the positive pole of the reset magnetic valve are each logical
A positive electrical wire is crossed to be connected with the positive pole of the battery, and it is described transposition magnetic valve negative pole and the reset magnetic valve negative pole
Respectively it is connected with the negative pole of the battery by a negative electrical wire, a switch is each provided with two positive electrical wires.
Preferably, in above-mentioned technical proposal, the switch is touch switch open in usual.
Compared with prior art, the present invention has the advantages that：
1st, the present invention when hydraulicdirectional control valve replace, it is only necessary to allow transposition magnetic valve it is of short duration obtain electric drive hydraulicdirectional control valve valve
Can power-off after core transposition.After transposition magnetic valve dead electricity, the lock pin on transposition lever is carried out by the pintle hook lock in restoring lever
Locking, makes hydraulicdirectional control valve be continually maintained on the position of commutation and works.When hydraulicdirectional control valve need to reset, also only need to make again
Position magnetic valve is electricly of short duration, pintle hook lock in restoring lever is unlocked the lock pin on transposition lever, in hydraulicdirectional control valve and
Hydraulicdirectional control valve can be just allowed to return to normal position in the presence of back-moving spring in transposition magnetic valve.The present invention can realize hydraulic pressure
The power-off transposition of reversal valve keeps, and has the advantages that little power consumption, simple structure, good reliability and be easily achieved to automatically control.
2nd, present invention transposition magnetic valve and reset magnetic valve are respectively controlled using touch switch open in usual, make transposition electromagnetism
Valve and reset magnetic valve work under being in wink dynamic state, reach the purpose of power saving to greatest extent.
Brief description of the drawings
Fig. 1 is the structural representation that holding meanss are powered off according to hydraulicdirectional control valve of the present invention.
Main Reference Numerals explanation：
1- batteries, 2- negative lines, 3- electrode lines, 4- switches, 5- reset magnetic valves, 6- second hinge bearings, 7- second connects
Bar, 8- restoring levers, 9- pintle hook locks, 10- lock pins, 11- transposition magnetic valves, 12- transposition levers, 13- first axle bearings, 14- the
One connecting rod, 15- operating cylinders, 16- hydraulicdirectional control valves, 17- accumulators, 18- overflow valves, 19- check valves, 20- oil pumps.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the invention is described in detail, it is to be understood that guarantor of the invention
Shield scope is not limited by specific embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " including " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other units
Part or other parts.
Fig. 1 shows that a kind of hydraulicdirectional control valve according to the preferred embodiment of the present invention powers off the structural representation of holding meanss
Figure, hydraulicdirectional control valve power-off holding meanss include first axle bearing 13, second hinge bearing 6, transposition lever 12, lock pin
10th, transposition magnetic valve 11, restoring lever 8, pintle hook lock 9 and reset magnetic valve 5, with reference to Fig. 1, first axle bearing 13, second cuts with scissors
Chain bearing 6, transposition magnetic valve 11 and reset magnetic valve 5 are fixedly installed.Replace lever 12 one end to be capable of the side of swing
Formula is articulated with first axle bearing 13, and the end of the valve element of hydraulicdirectional control valve 16 relies on the side of transposition lever 12, transposition
A lock pin 10 is convexly equipped with the body of rod of lever 12, lock pin 10 is straight pin.The end of the valve element of transposition magnetic valve 11 and transposition thick stick
The other end of bar 12 is hinged, and transposition magnetic valve 11 passes through the retraction of valve element and stretch to drive transposition lever 12 to be swung.Lock
Pin 10 may be located at transposition lever 12 on close to transposition magnetic valve 11 valve element position.Can be hydraulic pressure during original state
In state of stretching out in the presence of reset itself spring, hydraulicdirectional control valve 16 is in a working condition to the valve element of reversal valve 16
(normality), when (the right direction for being regarded to figure) swings the lever 12 that replaces forward, can be the valve element pressure of hydraulicdirectional control valve 16
Enter in valve body and convert working condition, and when (left direction for being regarded to figure) swings the lever 12 that replaces backward, hydraulic pressure is changed
Stretched out again in the presence of the back-moving spring of its own to the valve element of valve 16, to recover original working condition.Preferably,
One end of transposition lever 12 is hinged by first connecting rod 14 with first axle bearing 13, such that it is able to increase transposition lever 12
The free degree, prevent inversion mechanism produce movement interference.Can be replace lever 12 one end enter with one end of first connecting rod 14
Row is hinged, and the other end of first connecting rod 14 is hinged with first axle bearing 13.
With continued reference to Fig. 1, the set-up mode of restoring lever 8 is similar with transposition lever 12, and one end of restoring lever 8 is with can
The mode swung along the length direction of transposition lever 12 is articulated with second hinge bearing 6, so that what restoring lever 8 swung
The direction that direction swings perpendicular to transposition lever 12.The other end of restoring lever 8 and the transposition cross-distribution of lever 12, and reset thick stick
The other end of bar 8 is convexly equipped with a pintle hook lock 9, and pintle hook lock 9 is provided with an inclined-plane.In original state, restoring lever 8 with transposition lever 12
It can also be non-perpendicular that can be mutually perpendicular to, and the lock pin 10 on transposition lever 12 acts against the oblique of the pintle hook lock 9 of restoring lever 8
The bottom in face.Preferably, pintle hook lock 9 is in triangle convex, and it is further preferred that another face opposite with inclined-plane on pintle hook lock 9
It is vertical plane.The end of the valve element of reset magnetic valve 5 is hinged with restoring lever 8, and hinged place can be the body of rod in restoring lever 8
Middle part, reset magnetic valve 5 is by the retraction of valve element and stretches driving restoring lever 8 and is swung.During original state, reset
The valve element of magnetic valve 5 is in the presence of the back-moving spring of its own and stretches out state, when reset magnetic valve 5 is powered, its valve
Core is retracted, so that pintle hook lock 9 leaves lock pin 10, from the reset without influence transposition lever 12.Preferably, one end of restoring lever 8
It is hinged with second hinge bearing 6 by second connecting rod 7, such that it is able to increase the free degree of restoring lever 8, is prevented reset machine
Structure produces movement interference.Can be that one end of restoring lever 8 and one end of second connecting rod 7 are hinged, and second connecting rod 7 is another
One end is hinged with the second hinged seat 6.
With reference to Fig. 1, further, transposition magnetic valve 11 and reset magnetic valve 5 are powered by same battery 1.Preferably,
The positive pole of transposition magnetic valve 11 and the positive pole of reset magnetic valve 5 are respectively connected by a positive electrical wire 3 with the positive pole of battery 1, and are changed
The position negative pole of magnetic valve 11 and the negative pole of reset magnetic valve 5 are respectively connected by a negative electrical wire 2 with the negative pole of battery 1, and two just
A switch 4 is each provided with pole electric wire 3, two switches 4 are arranged in same switch enclosure.It is further preferred that switch 4 is normal
Open type touch switch.Present invention transposition magnetic valve 11 and reset magnetic valve 5 are powered by same battery 1, and are respectively adopted open in usual
Touch switch is controlled, and makes transposition magnetic valve 11 and reset magnetic valve 5 be in being worked under wink dynamic state, is saved to greatest extent with reaching
The purpose of electricity, it is particularly well-suited to use battery as the hydraulic control system of power supply.
The course of work of the invention is：
With reference to Fig. 1, hydraulicdirectional control valve 16 is arranged in a conventional hydraulic system for needing commutation, for example this is normal
The hydraulic system of rule is by operating cylinder 15, hydraulicdirectional control valve 16, accumulator 17, overflow valve 18, check valve 19, oil pump 20 and fuel tank
Composition.During original state, hydraulicdirectional control valve 16 is in (normal position) state of reset, and its valve element is remained out and stretched out, and replace magnetic valve
11 and reset magnetic valve 5 be also at reset (normal position) state, both valve elements are at the state of stretching out, and restoring lever 8 is vertical
In transposition lever 12, lock pin 10 is stuck in the bottom of the inclined-plane side of pintle hook lock 9.During start-up operation, first starting oil pump 20 makes hydraulic system
Work, then the piston of operating cylinder 15 is moved backward.When needing transposition, press in switch enclosure for controlling transposition magnetic valve 11 to lead to
The switch 4 of electricity, transposition magnetic valve 11 obtains electric, and its valve element retraction pulls transposition lever 12 to swing forward and promotes hydraulicdirectional control valve 16
Valve element is retracted to be commutated, and the effect of the back-moving spring of reset magnetic valve 5 can be overcome when lock pin 10 crosses the inclined-plane of pintle hook lock 9,
Restoring lever 8 is pressed from initial position, after lock pin 10 fully passes over pintle hook lock 9, then the piston advances forward of operating cylinder 15 is carried out
Transposition, and restoring lever 8 put and returned to initial position again in the presence of reset magnetic valve 5 back-moving spring of itself.Then
The switch 4 that control transposition magnetic valve 11 is powered is unclamped, replace the dead electricity of magnetic valve 11, in the reset bullet of itself of hydraulicdirectional control valve 16
Spring has under the trend that valve element is ejected, and lock pin 10 holds out against and locks with the vertical plane opposite with inclined-plane of pintle hook lock 9, makes transposition thick stick
Bar 12 can not swing back into initial position, so that hydraulicdirectional control valve 16 is still maintained at the location status of commutation.When need again
During reset, press in switch enclosure for the switch 4 for controlling reset magnetic valve 5 to be powered, reset magnetic valve 5 electric, its valve element retraction
Pull restoring lever 8 to leave initial position, lock pin 10 is departed from pintle hook lock 9, hydraulicdirectional control valve 16 is in the back-moving spring of itself
Effect is lower to be resetted, and returns to normal position state, the switch 4 that then release control reset magnetic valve 5 is powered, the dead electricity of reset magnetic valve 5, then
Restoring lever 8 returns to initial position in the promotion lower swing of the back-moving spring of reset magnetic valve 5, the piston of operating cylinder 15 just to
After move.
The present invention when hydraulicdirectional control valve 16 replace, it is only necessary to allow transposition magnetic valve 11 it is of short duration obtain electric drive hydraulicdirectional control valve 16
Valve element transposition after can power-off.After the transposition dead electricity of magnetic valve 11, by the 9 pairs of transposition levers 12 of pintle hook lock in restoring lever 8
Lock pin 10 locked, hydraulicdirectional control valve 16 is continually maintained on the position of commutation and work.When hydraulicdirectional control valve 16 need to be answered
During position, also only need to make reset magnetic valve 5 of short duration it is electric, make the lock pins 10 on the 9 pairs of transposition levers 12 of pintle hook lock in restoring lever 8
Unlock, can just allow hydraulicdirectional control valve 16 extensive under the action of reset spring in hydraulicdirectional control valve 16 and transposition magnetic valve 11
Normal position is arrived again.The present invention can realize that the power-off transposition of hydraulicdirectional control valve 16 keeps, with little power consumption, simple structure, reliability
Get well and be easily achieved the advantages of automatically controlling.
The foregoing description to specific illustrative embodiment of the invention be in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can be much changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that certain principles of the invention and its reality should
With so that those skilled in the art can realize and using a variety of exemplaries of the invention and
A variety of selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (10)
1. a kind of hydraulicdirectional control valve powers off holding meanss, it is characterised in that including：
First axle bearing；
Second hinge bearing；
Transposition lever, its one end in the way of swing can be articulated with the first axle bearing；Hydraulicdirectional control valve
The end of valve element relies on the side of the transposition lever；A lock pin is convexly equipped with the body of rod of the transposition lever；
Transposition magnetic valve, the end of its valve element is hinged with the other end of the transposition lever, and the transposition magnetic valve is by valve element
The driving transposition lever is retracted and stretches to be swung；
Restoring lever, its one end is articulated with described second in the way of it can be swung along the length direction of the transposition lever
On rocker bar bearing, the other end of the restoring lever is convexly equipped with a pintle hook lock, and the pintle hook lock is provided with an inclined-plane；In original state,
The lock pin on the transposition lever acts against the bottom on the inclined-plane of the pintle hook lock of the restoring lever；And
Reset magnetic valve, is hinged in the middle part of the end of its valve element and the restoring lever, the contracting that the reset magnetic valve passes through valve element
The driving restoring lever is returned and stretches to be swung.
2. hydraulicdirectional control valve according to claim 1 powers off holding meanss, it is characterised in that the pintle hook lock is raised in triangle
Shape.
3. hydraulicdirectional control valve according to claim 2 powers off holding meanss, it is characterised in that oblique with described on the pintle hook lock
Another opposite face of face is vertical plane.
4. hydraulicdirectional control valve according to claim 1 powers off holding meanss, it is characterised in that one end of the transposition lever
It is hinged with the first axle bearing by first connecting rod.
5. hydraulicdirectional control valve according to claim 4 powers off holding meanss, it is characterised in that one end of the transposition lever
One end with the first connecting rod is hinged, and the other end of the first connecting rod is cut with scissors with the first axle bearing
Connect.
6. hydraulicdirectional control valve according to claim 1 powers off holding meanss, it is characterised in that one end of the restoring lever
It is hinged with the second hinge bearing by second connecting rod.
7. hydraulicdirectional control valve according to claim 6 powers off holding meanss, it is characterised in that one end of the restoring lever
One end with the second connecting rod is hinged, and the other end of the second connecting rod is cut with scissors with the second hinge bearing
Connect.
8. hydraulicdirectional control valve according to claim 1 powers off holding meanss, it is characterised in that the transposition magnetic valve and institute
Reset magnetic valve is stated to be powered by same battery.
9. hydraulicdirectional control valve according to claim 8 powers off holding meanss, it is characterised in that the transposition magnetic valve is just
The positive pole of pole and the reset magnetic valve is respectively connected by a positive electrical wire with the positive pole of the battery, and the transposition magnetic valve
Negative pole and the negative pole of the reset magnetic valve be respectively connected with the negative pole of the battery by a negative electrical wire, two positive poles
A switch is each provided with electric wire.
10. hydraulicdirectional control valve according to claim 9 powers off holding meanss, it is characterised in that the switch is open in usual
Touch switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039648.5A CN106764022B (en) | 2016-11-21 | 2016-11-21 | A kind of hydraulicdirectional control valve power-off holding meanss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039648.5A CN106764022B (en) | 2016-11-21 | 2016-11-21 | A kind of hydraulicdirectional control valve power-off holding meanss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106764022A true CN106764022A (en) | 2017-05-31 |
| CN106764022B CN106764022B (en) | 2018-08-28 |
Family
ID=58974355
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611039648.5A Active CN106764022B (en) | 2016-11-21 | 2016-11-21 | A kind of hydraulicdirectional control valve power-off holding meanss |
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| Country | Link |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815696A (en) * | 1986-11-21 | 1989-03-28 | Paul Wurth, S.A. | Mechanism for operating a metering valve |
| CN2283160Y (en) * | 1996-11-28 | 1998-06-03 | 闫学富 | Electric or hydraulic operated change valve |
| CN1263998A (en) * | 1999-02-01 | 2000-08-23 | 雷践仁 | Force feedback and pilot type multi-stage electro-hydraulic servo control element/assembly with directional flow or bidirectional displacement output |
| CN101988530A (en) * | 2009-08-04 | 2011-03-23 | 沈阳东北电力调节技术有限公司 | Lever feedback electrohydraulic servo mechanism |
| CN202441833U (en) * | 2011-11-21 | 2012-09-19 | 苏州大学 | Double-effect double-stage gas-liquid supercharging transmission apparatus |
| CN203374689U (en) * | 2013-07-01 | 2014-01-01 | 中国人民解放军装甲兵工程学院 | Pneumatic automatic operating device for vehicle clutch |
| CN204493326U (en) * | 2015-01-29 | 2015-07-22 | 上海军信船舶科技有限公司 | Electricity liquid self-sustaining selector valve |
| CN105650051A (en) * | 2016-04-14 | 2016-06-08 | 沈阳东北电力调节技术有限公司 | Lever feedback type electro-hydraulic servo mechanism |
-
2016
- 2016-11-21 CN CN201611039648.5A patent/CN106764022B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815696A (en) * | 1986-11-21 | 1989-03-28 | Paul Wurth, S.A. | Mechanism for operating a metering valve |
| CN2283160Y (en) * | 1996-11-28 | 1998-06-03 | 闫学富 | Electric or hydraulic operated change valve |
| CN1263998A (en) * | 1999-02-01 | 2000-08-23 | 雷践仁 | Force feedback and pilot type multi-stage electro-hydraulic servo control element/assembly with directional flow or bidirectional displacement output |
| CN101988530A (en) * | 2009-08-04 | 2011-03-23 | 沈阳东北电力调节技术有限公司 | Lever feedback electrohydraulic servo mechanism |
| CN202441833U (en) * | 2011-11-21 | 2012-09-19 | 苏州大学 | Double-effect double-stage gas-liquid supercharging transmission apparatus |
| CN203374689U (en) * | 2013-07-01 | 2014-01-01 | 中国人民解放军装甲兵工程学院 | Pneumatic automatic operating device for vehicle clutch |
| CN204493326U (en) * | 2015-01-29 | 2015-07-22 | 上海军信船舶科技有限公司 | Electricity liquid self-sustaining selector valve |
| CN105650051A (en) * | 2016-04-14 | 2016-06-08 | 沈阳东北电力调节技术有限公司 | Lever feedback type electro-hydraulic servo mechanism |
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| Publication number | Publication date |
|---|---|
| CN106764022B (en) | 2018-08-28 |
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