CN108626190A - A kind of plug-in control valve - Google Patents
A kind of plug-in control valve Download PDFInfo
- Publication number
- CN108626190A CN108626190A CN201810485261.5A CN201810485261A CN108626190A CN 108626190 A CN108626190 A CN 108626190A CN 201810485261 A CN201810485261 A CN 201810485261A CN 108626190 A CN108626190 A CN 108626190A
- Authority
- CN
- China
- Prior art keywords
- valve core
- reversing valve
- control chamber
- flow slot
- flow
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The present invention relates to a kind of plug-in control valves, it is characterised in that：Including valve pocket, reversing valve core, the first spring, second spring and overflow valve, valve pocket is equipped with oil inlet, oil return opening, the first actuator port and the second actuator port, valve pocket is equipped with first passage, reversing valve core is located at first passage, and main control chamber and secondary control chamber are formed in the left and right side of reversing valve core respectively, first spring, which is located at main control intracavitary, makes reversing valve core holding move to right trend, second spring, which is located at secondary control intracavitary, makes reversing valve core holding move to left trend, and overflow valve opens secondary control chamber and the first actuator port set on second channel for normal off.Structure of the invention is compact, processing cost is low and can be automatically performed automatically controlling for overturning to pivot plow.
Description
Technical field
The invention belongs to valve technology field more particularly to a kind of plug-in control valves.
Background technology
In recent years, China's most area has started to promote and apply hydraulic reversing plough.It is carried out ploughing ashamed industry with pivot plow, be had
Whether there is or not opening and closing ridge, production efficiency is high, energy saving the advantages that.Hydraulic reversing plough is to control left and right two using the hydraulic system of tractor
Plough body alternately operating is covered, to achieve the purpose that without opening and closing ridge.As shown in fig. 6, the switching mechanism of hydraulic reversing plough includes mainly outstanding
Hanger 111, rotation axis 115, plow beam 112 and oil cylinder 113, rotation axis 115 are welded on hanger bracket 111, and plow beam 112, which is mounted on, to be turned
On moving axis 115,113 both ends of oil cylinder are hinged on axis pin on hanger bracket top and plow beam 112 respectively, and plough body 114 is mounted in plow beam 112
On.Oil cylinder is by the HYDRAULIC CONTROL SYSTEM of tractor, and when ploughing in running order, oil cylinder is in maximum elongation state.It is overturning
When commutation, needs first control cylinder to shorten and plow beam is driven to be flipped up, when plow beam is approximately rotated to upright position, then control oil
Cylinder stretches out, and plow beam is made to cross " dead point " position, cylinder thrust and and gravity under the action of continue to rotate, until the other side works
Stop when position.
Currently, for the overturning control valve of control cylinder, there are mainly two types of forms both at home and abroad, one is the overturnings of manual hydraulic pressure
Control valve, another kind are autocontrol valves.Manual mode is that manual guiding valve control cylinder oil circuit is directly manipulated by operator on the tractor
Make alternating plough starting overturning, plough stirs shift fork in middle position and drives a rotary valve that oil path in oil cylinder is made to convert, and completes overturning and change
To, this overturning control valve operator on the tractor in headland turn will also manipulate and turn in addition to manipulation direction disk, lifting plough
Turn control valve, it is very nervous and busy for completing these types action in very short time, and labor intensity increases；It needs to use simultaneously
It is also high that two control valves not only construct complexity, cost.Autocontrol valve is to utilize two rotary valves of a set of mechanism controls, makes first turn
Valve, which manipulates oil path in oil cylinder, makes plough starting overturning, the conversion of oil path in oil cylinder in the control switching process of the second rotary valve and realize the overturning of plough
Commutation.Although this switching mechanism realizes full-automatic inverting commutation.But structure is sufficiently complex, poor reliability, but also need
It is still very high with two control rotary valve costs.
Invention content
A kind of simple in structure, manufacture is provided the technical problem to be solved by the present invention is to present situation for the above-mentioned prior art
It is at low cost, the plug-in control valve of pivot plow automatic turning control may be implemented.
Technical solution is used by the present invention solves above-mentioned technical problem：A kind of plug-in control valve, it is characterised in that：
Including valve pocket, valve pocket is equipped with oil inlet, oil return opening, the first actuator port and the second actuator port, and valve pocket is equipped in an axial direction
The closed first passage of right-end openings left end, have on first passage the first through-flow slot, the second through-flow slot, third of annular logical
Chute and four-way chute, the first through-flow slot are connected with oil return opening, and the second through-flow slot is connected with the second actuator port, third
Through-flow slot is connected with oil inlet, and four-way chute is connected with the first actuator port；Reversing valve core is set to first passage and energy
The first passage of sliding, reversing valve core left end constitutes main control chamber, and the first passage of reversing valve core right end constitutes secondary control chamber, main
Control chamber is connected by the first damping hole being located on valve pocket with oil return opening, and secondary control chamber is by being provided on first passage
The second channel in portion is connected with four-way chute, and main control intracavitary is equipped with the first bullet for making reversing valve core keep moving to right trend
Spring, secondary control intracavitary are equipped with the second spring for making reversing valve core keep moving to left trend, connection main control chamber are equipped in reversing valve core
With the second damping hole of secondary control chamber, be additionally provided on the side wall of reversing valve core the first through flow hole communicated with main control chamber and with it is secondary
The third damping hole that control chamber communicates, reversing valve core can switch between first position, the second position and the third place；Overflow valve,
Second channel is opened to normal off on second channel, after the first actuator port pressure reaches certain value, overflow valve is opened, oil
Liquid flows into secondary control chamber by the first actuator port.
Preferably, when reversing valve core is in first position, reversing valve core closes the first through-flow slot, and reversing valve core makes the
Two-way chute is connected to main control chamber by the first through flow hole, and reversing valve core makes third damping hole be covered, and reversing valve core disconnects
The connection of second through-flow slot and the through-flow slot of third, reversing valve core make the through-flow slot of third and four-way chute be connected to, and reversing valve core is disconnected
Open the connection of four-way chute and secondary control chamber.
Preferably, when reversing valve core is in the second position, reversing valve core moves from left to right under external force, changes
The first through-flow slot is opened to spool so that the first through-flow slot is connected to main control chamber, reversing valve core makes third damping hole be covered,
Reversing valve core makes the second through-flow slot pass through the first through flow hole connection main control chamber, and it is logical with third that reversing valve core disconnects the second through-flow slot
The connection of chute, reversing valve core make the through-flow slot of third and four-way chute be connected to, and reversing valve core disconnects four-way chute and secondary control
The connection of chamber processed.
Preferably, when reversing valve core is in the third place, right-to-left moves reversing valve core under external force, changes
The first through-flow slot is opened to spool so that the first through-flow slot is connected to main control chamber by the first through flow hole, and reversing valve core disconnects second
The connection of through-flow slot and main control chamber simultaneously makes the second through-flow slot be connected to the through-flow slot of third, and reversing valve core makes third damping hole and
Two-way chute is connected, and reversing valve core disconnects the connection of the through-flow slot of third and four-way chute and makes four-way chute and secondary control
Chamber is connected to.
Preferably, the right end of first passage is blocked equipped with screw plug, secondary control chamber is formed between screw plug and reversing valve core.
Compared with the prior art, the advantages of the present invention are as follows：
(1) present invention designs for plug-in, and compact-sized, reasonable, parts are few, at low cost.
(2) present invention can be completed by principle design to the retraction for overturning cylinder, automatically controlling of stretching out again, to complete
Automatic turning control to hydraulic reversing plough, high degree of automation.
Description of the drawings
Fig. 1 is the sectional view of the embodiment of the present invention, and reversing valve core is in first position at this time；
Schematic diagrames of the Fig. 2 for reversing valve core in the embodiment of the present invention in the second position；
Fig. 3 be the embodiment of the present invention in reversing valve core the third place schematic diagram；
Fig. 4 is the hydraulic schematic diagram of the embodiment of the present invention；
Fig. 5 is the embodiment of the present invention using hydraulic schematic diagram；
Fig. 6 is the schematic diagram of hydraulic turnover mechanism.
Specific implementation mode
Below in conjunction with attached drawing embodiment, present invention is further described in detail.
As shown in Figures 1 to 3, it is a preferred embodiment of the present invention.
A kind of plug-in control valve, including：
Valve pocket 1, valve pocket 1 is equipped with oil inlet P, oil return inlet T, the first actuator port A and the second actuator port B, on valve pocket 1
Equipped on right-end openings left end closed first passage L1, first passage L1 in an axial direction have annular the first through-flow slot 101,
Second through-flow slot 102, third is through-flow slot 103 and four-way chute 104, the first through-flow slot 101 are connected with oil return inlet T, and second
Through-flow slot 102 is connected with the second actuator port B, and third is through-flow, and slot 103 is connected with oil inlet P, four-way chute 104 and
One actuator port A is connected；
Reversing valve core 3 is set to first passage L1 and can slide, and the first passage of 3 left end of reversing valve core constitutes main control chamber
The first passage of 1a, 3 right end of reversing valve core constitute the right end of secondary control chamber 1b, first passage L1 equipped with the closure of screw plug 4, screw plug 4
Secondary control chamber 1b, main control chamber 1a are formed between reversing valve core 3 passes through the first damping hole 1d and the oil return opening that are located on valve pocket 1
T-phase is connected to, and secondary control chamber 1b is connected by being provided at the second channel L2 on the tops first passage L1 with four-way chute 104
It is logical, the first spring 2b for making reversing valve core 3 keep moving to right trend is equipped in main control chamber 1a, being equipped in secondary control chamber 1b makes commutation
Spool 3 keeps moving to left the second spring 2a of trend, and the second of connection main control chamber 1a and secondary control chamber 1b is equipped in reversing valve core 3
Damping hole 3d, be additionally provided on the side wall of reversing valve core 2 the first through flow hole 3c communicated with main control chamber 1a and with secondary control chamber 1b
The third damping hole 3a communicated, reversing valve core 3 can switch between first position, the second position and the third place.As shown in Figure 1,
When reversing valve core 3 is in first position, reversing valve core 3 closes the first through-flow slot 101, and reversing valve core 3 makes the second through-flow slot 102
It is connected to main control chamber 1a by the first through flow hole 3c, reversing valve core 3 makes third damping hole 3a be covered, and reversing valve core 3 disconnects
The connection of second through-flow slot 102 and third are through-flow slot 103, reversing valve core 3 make the through-flow slot 103 of third and four-way chute 104 connect
Logical, reversing valve core 3 disconnects the connection of four-way chute 104 and secondary control chamber 1b.As shown in Fig. 2, reversing valve core 3 is in second
When setting, reversing valve core 3 moves from left to right under external force, and reversing valve core 3 opens the first through-flow slot 101 so that first is through-flow
Slot 101 is connected to main control chamber 1a, and reversing valve core 3 makes third damping hole 3a be covered, and reversing valve core 3 makes the second through-flow slot 102
It is connected to main control chamber 1a by the first through flow hole 3c, reversing valve core 3 disconnects the company of the through-flow slot of the second through-flow slot 102 and third 103
Connect, reversing valve core 3 makes the through-flow slot of third 103 be connected to four-way chute 104, reversing valve core 3 disconnect four-way chute 104 with time
The connection of control chamber 1b.As shown in figure 3, when reversing valve core 3 is in the third place, reversing valve core 3 is under external force from right
It is moved to the left, reversing valve core 3 opens the first through-flow slot 101 so that the first through-flow slot 101 is connected to master control by the first through flow hole 3c
Chamber 1a processed, reversing valve core 3 disconnect the connection of the second through-flow slot 102 and main control chamber 1a and keep the second through-flow slot 102 and third logical
Chute 103 is connected to, and reversing valve core 3 makes third damping hole 3a be connected with the second through-flow slot 102, and it is logical that reversing valve core 3 disconnects third
Chute 103 and the connection of four-way chute 104 simultaneously make four-way chute 104 be connected to secondary control chamber 1b.
Overflow valve 5 opens second channel L2 on second channel L2 to normal off, when the first actuator port A pressure reaches
After certain value, overflow valve 5 is opened, and fluid flows into secondary control chamber 1b by the first actuator port A.
The operation principle and process of the present invention is as follows：
(when practical connection, the hydraulic lock being connected on hydraulic cylinder 8 in oil circuit has been left out) as shown in Figure 5, in application, will
The oil inlet hydraulic fluid port P and oil return inlet T of a kind of plug-in control valve 9 according to the ... of the embodiment of the present invention are respectively and the electricity for controlling fuel feeding
The actuator port A1 of magnetic reversal valve 7 is connected with B1, and a kind of plug-in according to the ... of the embodiment of the present invention is overturn the first of control valve 9
The rod chamber of actuator port A connection liquid cylinder pressures 8, the rodless cavity of the second actuator port B connection liquid cylinder pressures 8.
When pivot plow is in running order, need not be overturn, solenoid directional control valve 7 is in power failure state, oily at this time
Mouth A1, B1 are communicated with oil return inlet T 1, then a kind of oil inlet P of plug-in overturning control valve according to the ... of the embodiment of the present invention and oil return
Mouth T is also at passive state, and under the active force of the first spring 2b and second spring 2a, spool 3 is in as shown in Figure 1 first
Position, spool 3 controls oil inlet P has one crack mouthful of 3b to keep being connected to the first actuator port A.
When needing control pivot plow to be overturn, solenoid directional control valve 7 is set to charge, then one kind according to the ... of the embodiment of the present invention
Oil inlet P and the hydraulic pump outlet of plug-in overturning control valve 9 oil return inlet T that is connected are connected with fuel tank, the oil of the outlet of hydraulic pump 6
Liquid is entered the rod chamber of hydraulic cylinder 8 by oil inlet P after crack mouth 3b, the first actuator port A, pushes hydraulic cylinder 8 to retract, then liquid
The fluid of the rodless cavity of cylinder pressure 8 returns to after the second actuator port B, the first through flow hole 3c, main control chamber 1a, the first damping hole 1d
Oil return inlet T, since the throttling action of the first damping hole 1d makes main control chamber 1a generate return oil pressure, this pressure pushes spool 3 certainly
From left to right moves, and so that the area that the first through flow hole 3c is connected to the second actuator port B is gradually increased, while spool 3 being made to open back
Hydraulic fluid port T, until the active force on spool 3 reaches equilibrium state, as shown in Figure 2.
In this way, spool 3 just maintains oil inlet P and the first actuator port A under the action of main control chamber 1a return pressures
It is connected, the second actuator port B is connected state with oil return inlet T；Hydraulic cylinder 8 is in a kind of plug-in according to the ... of the embodiment of the present invention
Overturn control valve 9 control under drive plow beam be flipped up, when hydraulic cylinder 8 retract in place, that is, plow beam reach " dead point position
Set " when, on the one hand the pressure of the first actuator port A reaches the setting pressure of overflow valve 5, and triggering overflow valve 5 is opened, the first work
The fluid of hydraulic fluid port A returns to oil return inlet T through second channel L2, secondary control chamber 1b, the second damping hole 3d, and such secondary control chamber 1b is established
Play pressure；On the other hand because hydraulic cylinder is retracted in place, fluid no longer flows between the second actuator port B and oil return inlet T, master control
The return oil pressure of chamber 1a processed disappears；The right-to-left under the pressure difference of main control chamber 1a and secondary control chamber 1b of spool 3 moves, Zhi Daotu
Position shown in 3.
Oil inlet P is communicated with the second actuator port B at this time, and the first actuator port A is communicated with secondary control chamber 1b, and overflow valve
5 have been switched off second channel L2, and secondary control chamber 1b is because fluid is damped through control chamber 1b, second successively by the first actuator port A
Hole 3d, the first through flow hole 3c, the first through-flow slot 101 flow to return oil pressure caused by oil return inlet T and continue to press on the guarantor of reversing valve core 3
Hold in left end position, hydraulic cylinder 8 just under a kind of control that plug-in overturns control valve according to the ... of the embodiment of the present invention gradually
It is fully extended, so far complete the entire overturning of alternating plough.The return oil pressure of secondary control chamber 1b disappears after hydraulic cylinder 8 is fully extended
It loses, but the second actuator port B flows into secondary control chamber 1b by third damping hole 3a, secondary control chamber 1b is made to continue to keep pressure, because
This reversing valve core 3 is continually maintained in the third place shown in Fig. 3.
After 7 dead electricity of solenoid directional control valve, oil inlet P, the pressure of oil return inlet T disappear, reversing valve core 3 in the first spring 2b and
Position shown in Fig. 1 is returned under the action of second spring 2a, is prepared for overturning control in next step.
Claims (5)
1. a kind of plug-in control valve, it is characterised in that：Including
Valve pocket (1), valve pocket (1) are equipped with oil inlet (P), oil return opening (T), the first actuator port (A) and the second actuator port
(B), valve pocket (1) is equipped with the closed first passage of right-end openings left end (L1) in an axial direction, has ring on first passage (L1)
First through-flow slot (101) of shape, the second through-flow slot (102), third is through-flow slot (103) and four-way chute (104), first is through-flow
Slot (101) is connected with oil return opening (T), and the second through-flow slot (102) is connected with the second actuator port (B), third is through-flow slot
(103) it is connected with oil inlet (P), four-way chute (104) is connected with the first actuator port (A)；
Reversing valve core (3) is set to first passage (L1) and can slide, and the first passage of reversing valve core (3) left end constitutes main control
The first passage of chamber (1a), reversing valve core (3) right end constitutes secondary control chamber (1b), and main control chamber (1a) is by being located at valve pocket (1)
On the first damping hole (1d) be connected with oil return opening (T), secondary control chamber (1b) is by being provided at the top first passage (L1)
Second channel (L2) be connected with four-way chute (104), being equipped in main control chamber (1a) makes reversing valve core (3) holding move to right
The first spring (2b) of trend, secondary control chamber (1b) is interior to be equipped with the second spring (2a) for making reversing valve core (3) keep moving to left trend,
The second damping hole (3d) of connection main control chamber (1a) and secondary control chamber (1b) is equipped in reversing valve core (3), reversing valve core (2)
The first through flow hole (3c) communicated with main control chamber (1a) and the third communicated with secondary control chamber (1b) damping are additionally provided on side wall
Hole (3a), reversing valve core (3) can switch between first position, the second position and the third place；
Overflow valve (5) is set on second channel (L2) and opens second channel (L2) to normal off, when the first actuator port (A) pressure
After reaching certain value, overflow valve (5) is opened, and fluid flows into secondary control chamber (1b) by the first actuator port (A).
2. a kind of plug-in control valve according to claim 1, it is characterised in that：When reversing valve core (3) is in first
When setting, reversing valve core (3) closes the first through-flow slot (101), and reversing valve core (3) keeps the second through-flow slot (102) through-flow by first
Hole (3c) is connected to main control chamber (1a), and reversing valve core (3) makes third damping hole (3a) be covered, and reversing valve core (3) disconnects the
The connection of two-way chute (102) and the through-flow slot of third (103), reversing valve core (3) make the through-flow slot of third (103) and four-way chute
(104) it is connected to, reversing valve core (3) disconnects the connection of four-way chute (104) and secondary control chamber (1b).
3. a kind of plug-in control valve according to claim 1, it is characterised in that：When reversing valve core (3) is in second
When setting, reversing valve core (3) moves from left to right under external force, and reversing valve core (3) opens the first through-flow slot (101) so that the
One through-flow slot (101) connection main control chamber (1a), reversing valve core (3) make third damping hole (3a) be covered, reversing valve core (3)
The second through-flow slot (102) is set to be connected to main control chamber (1a) by the first through flow hole (3c), reversing valve core (3) disconnects the second through-flow slot
(102) and the connection of the through-flow slot of third (103), reversing valve core (3) make the through-flow slot of third (103) and four-way chute (104) even
Logical, reversing valve core (3) disconnects the connection of four-way chute (104) and secondary control chamber (1b).
4. a kind of plug-in control valve according to claim 1, it is characterised in that：When reversing valve core (3) is in third position
When setting, right-to-left moves reversing valve core (3) under external force, and reversing valve core (3) opens the first through-flow slot (101) so that the
One through-flow slot (101) is connected to main control chamber (1a) by the first through flow hole (3c), and reversing valve core (3) disconnects the second through-flow slot
(102) and the connection of main control chamber (1a) and the second through-flow slot (102) is made to be connected to the through-flow slot of third (103), reversing valve core (3)
Third damping hole (3a) is set to be connected with the second through-flow slot (102), reversing valve core (3) disconnects the through-flow slot of third (103) and the 4th
The connection of through-flow slot (104) simultaneously makes four-way chute (104) be connected to secondary control chamber (1b).
5. a kind of plug-in control valve according to claim 1, it is characterised in that：The right end of the first passage (L1) is set
There is screw plug (4) closure, forms secondary control chamber (1b) between screw plug (4) and reversing valve core (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485261.5A CN108626190B (en) | 2018-05-18 | 2018-05-18 | Plug-in type control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485261.5A CN108626190B (en) | 2018-05-18 | 2018-05-18 | Plug-in type control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108626190A true CN108626190A (en) | 2018-10-09 |
| CN108626190B CN108626190B (en) | 2020-05-29 |
Family
ID=63693829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810485261.5A Active CN108626190B (en) | 2018-05-18 | 2018-05-18 | Plug-in type control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108626190B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02283977A (en) * | 1989-04-24 | 1990-11-21 | Komatsu Ltd | Counter balance valve |
| DE102010005229A1 (en) * | 2010-01-21 | 2011-07-28 | Hydac Fluidtechnik GmbH, 66280 | valve device |
| EP2558757A1 (en) * | 2010-04-10 | 2013-02-20 | Hydac Fluidtechnik GmbH | Flow control valve |
| CN105190052A (en) * | 2013-03-14 | 2015-12-23 | 斗山英维高株式会社 | Hydraulic system for construction machine |
| CN206668651U (en) * | 2017-04-11 | 2017-11-24 | 江苏海事职业技术学院 | A kind of type plug-in electro-hydraulic ratio steering wheel special service valve |
| CN207111564U (en) * | 2017-08-17 | 2018-03-16 | 海门维拓斯液压阀业有限公司 | A kind of high-pressure high-flow two-way plug-in valve direction controlling cover plate |
-
2018
- 2018-05-18 CN CN201810485261.5A patent/CN108626190B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02283977A (en) * | 1989-04-24 | 1990-11-21 | Komatsu Ltd | Counter balance valve |
| DE102010005229A1 (en) * | 2010-01-21 | 2011-07-28 | Hydac Fluidtechnik GmbH, 66280 | valve device |
| US20120292540A1 (en) * | 2010-01-21 | 2012-11-22 | Hydac Fluidtechnik Gmbh | Valve device |
| EP2558757A1 (en) * | 2010-04-10 | 2013-02-20 | Hydac Fluidtechnik GmbH | Flow control valve |
| CN105190052A (en) * | 2013-03-14 | 2015-12-23 | 斗山英维高株式会社 | Hydraulic system for construction machine |
| CN206668651U (en) * | 2017-04-11 | 2017-11-24 | 江苏海事职业技术学院 | A kind of type plug-in electro-hydraulic ratio steering wheel special service valve |
| CN207111564U (en) * | 2017-08-17 | 2018-03-16 | 海门维拓斯液压阀业有限公司 | A kind of high-pressure high-flow two-way plug-in valve direction controlling cover plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108626190B (en) | 2020-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108591156A (en) | A kind of oil passage change-over valve | |
| CN108612694B (en) | Control valve | |
| CN108644173B (en) | Hydraulic valve | |
| CN108679029A (en) | A kind of ram control valve | |
| CN108626195B (en) | Control valve | |
| CN108644417B (en) | Valve for double-cylinder control | |
| CN205895730U (en) | Oil drilling equipment , elevator and hydraulic system thereof | |
| CN108591155B (en) | Multi-way reversing valve | |
| CN108626190A (en) | A kind of plug-in control valve | |
| CN108612695A (en) | A kind of automatic diverter valve for single cylinder | |
| CN108661973A (en) | A kind of automatic turning control valve | |
| CN108799226A (en) | A kind of plug-in overturning control valve | |
| CN108757612A (en) | A kind of twin-tub control system with multi-way valve | |
| CN108644418A (en) | A kind of hydraulic control device for agricultural machinery | |
| CN108679022B (en) | Double-cylinder control system | |
| CN108626193A (en) | A kind of cartridge valve | |
| CN108591160A (en) | A kind of hydraulic valve for agricultural machinery | |
| CN108612700A (en) | Plug-in overturns control valve | |
| CN108591159A (en) | A kind of autocontrol valve for pivot plow | |
| CN206035928U (en) | Oil drilling equipment , elevator and hydraulic system thereof | |
| CN108626196A (en) | A kind of fluid pressure valve device for double hydraulic cylinder sequentially-operating | |
| CN108757625B (en) | Control valve | |
| CN108591153A (en) | A kind of multi-way valve | |
| CN105179356B (en) | Auxiliary boom control valve, auxiliary boom hydraulic control system and crane | |
| CN108488132A (en) | A kind of twin-tub autocontrol valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200508 Address after: 273500, Jining City, Shandong province Zoucheng town center resident Applicant after: ZOUCHENG YICHENG MACHINERY Co.,Ltd. Address before: 315000 188 Jinghua Road, Ningbo high tech Zone, Zhejiang (1493 tower, 041 block B block, modern building, Ningbo harbour). Applicant before: NINGBO ZHENGE HYDRAULIC TECHNOLOGY Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Cartridge type control valve Effective date of registration: 20220316 Granted publication date: 20200529 Pledgee: Bank of China Limited Zoucheng sub branch Pledgor: ZOUCHENG YICHENG MACHINERY Co.,Ltd. Registration number: Y2022980002630 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |