CN104389833B - Stop the multiple directional control valve of maloperation - Google Patents
Stop the multiple directional control valve of maloperation Download PDFInfo
- Publication number
- CN104389833B CN104389833B CN201410636964.5A CN201410636964A CN104389833B CN 104389833 B CN104389833 B CN 104389833B CN 201410636964 A CN201410636964 A CN 201410636964A CN 104389833 B CN104389833 B CN 104389833B
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- Prior art keywords
- spool
- oil
- oil return
- valve body
- valve
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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
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a kind of multiple directional control valve stopping maloperation, including valve body and spool；Valve body is cylindrical body, and spool is cylinder；When spool inserts valve body, valve body is coaxial with spool；Being provided with an oil-feed annular groove on the inner peripheral surface of valve body, oil-feed annular groove is connected with oil-in；Being provided with elongated hole on spool, the length direction of elongated hole is axial consistent with spool；Spool can moving axially along valve body, when spool moves axially from left to right successively between oil-feed position, middle position holding position and oil return position change；When spool moves to oil return position, the hydraulic oil in oil-in open to realize oil return by oil return valve.The multiple directional control valve stopping maloperation of the present invention, even if having when there is shutdown the maloperation of spool also will not oil return, improve the advantage such as security reliability of banked direction control valves.
Description
Technical field
The present invention relates to a kind of multiple directional control valve stopping maloperation.
Background technology
The relative motion that reversal valve is made by between spool and valve body changes the valve of the break-make relation being connected to the last oil duct of valve body
Class.Multiple directional control valve is to be the combination valve of main body by two or more reversal valve.According to different job requirements, it is also possible in combination
The subsidiary valves such as safety overflow valve, check valve and Fill valve.Comparing with other kinds of valve, multiple directional control valve has compact conformation pressure
Power loss is little, and guiding valve moving resistance is little, has many bit functions, life-span long, the advantage such as is simple to manufacture.
As Fig. 5-7 is the banked direction control valves of a kind of prior art, including valve body, spool and bonnet；This banked direction control valves has three kinds of duties,
Oil-feed state, oil return state and middle position hold mode.If Fig. 5 is oil-feed state, now spool is positioned at high order end, now spool
On elongated hole connection oil inlet passage and the oil-feed annular groove of body cavity, the hydraulic oil of oil inlet P 2 is by oil-feed annular groove, elongated hole and enters
Entering oil inlet passage, the in line check valve 12 that hydraulic oil will be located in oil inlet passage is opened, for actuator port A02 fuel feeding.Such as Fig. 6
For middle position hold mode, compared with Fig. 5, the position of spool moves right, now the elongated hole on spool and between oil-feed annular groove not
Connection, the oil return valve in drainback passage is also not turned on, the most neither oil-feed also not oil return.Fig. 7 is oil return state, now with
Fig. 6 compares, and spool has moved right again some, now the elongated hole on spool and not connecting between oil-feed annular groove, and now valve
Oil return valve is backed down by the boss of core right-hand member, and the hydraulic oil in actuator port returns to oil return inlet T 2 by drainback passage.It follows that
The oil return of the banked direction control valves of this prior art is realized by spool Non-follow control, and no matter whether electromotor is opened, as long as by valve
Oil return position pressed by core, will realize the oil return of actuator port.
In practical work process, having many times needs banked direction control valves to be in for a long time to be maintained at middle position hold mode.Such as, fork truck
Needing to keep a period of time after being raised by goods so that loading, lift truck needs to keep certain height for a long time after being raised by lifting platform
Position so that staff's aloft work；Electromotor can be shut down and wait end-of-job by general now operator.If adopted
With the banked direction control valves of prior art, even if electromotor is shut down, people's maloperation is once had to press banked direction control valves, then actuator port A02
The quick oil return of meeting, now the lifting platform of fork truck, farm machinery or lift truck can quickly be fallen, and goods or staff are at fast prompt drop
Can be damaged or injured during falling, there is certain potential safety hazard.
Summary of the invention
The present invention is for avoiding weak point present in above-mentioned prior art, it is provided that a kind of multiple directional control valve stopping maloperation,
So that banked direction control valves will not oil return, the security reliability of raising banked direction control valves when being misused when shutting down.
The present invention solves that technical problem is by the following technical solutions.
Stopping the multiple directional control valve of maloperation, it is structurally characterized in that, including valve body and spool；Valve body is cylindrical body, described spool
For cylinder；When described spool inserts the valve pocket of described valve body, described valve body is coaxial with described spool；
Being provided with an oil-feed annular groove on the inner peripheral surface of described valve body, described oil-feed annular groove is connected with the oil inlet P 1 on valve body
Logical；Being provided with elongated hole on described spool, the length direction of described elongated hole is axial consistent with described spool；Described spool can edge
Moving axially of described valve body, when spool moves axially from left to right successively between oil-feed position, middle position holding position and oil return position
Conversion；Spool therefrom position holding position moves to oil return position, when spool is positioned at oil return position, by the hydraulic oil in oil inlet P 1 by position
Oil return valve in drainback passage is opened to realize oil return.
The construction features of the multiple directional control valve stopping maloperation of the present invention lies also in:
Oil inlet P 1, oil return inlet T 1 and actuator port A1 is offered on described valve body；Offer oil return in described valve body and control logical
Road；Described oil return valve includes oil return spool and the first back-moving spring；One end of described first back-moving spring and described oil return spool
Right-hand member abuts against, and the other end of described first back-moving spring abuts against with bonnet；Described bonnet is arranged at the right part of valve body；Institute
The left end stating oil return spool is inserted in described oil return control passage, and is controlled the hydraulic oil in passage by described oil return valve by oil return
Core presses to described first back-moving spring to open drainback passage, it is achieved the oil return of actuator port A1.
When described spool is in oil-feed position, described oil return controls passage and is connected between described oil return inlet T 1, described oil return valve
Close.
The right-hand member of described spool is provided with the second back-moving spring；Described in when spool is positioned at middle position holding position, the second back-moving spring is in
Naturalness；The left end of described spool is provided with spool stick.
Described elongated hole is mounting hole or rectangular opening.
Compared with the prior art, the present invention has the beneficial effect that:
The multiple directional control valve stopping maloperation of the present invention, including valve body and spool.When spool is in middle position holding position, by valve
When core moves to oil return position, by the hydraulic oil in oil-in by oil return valve open realize oil return.
Have employed the mode of manual and oily control combination to realize oil return.If electromotor is shut down by staff, then in oil-in
With regard to no pressure.Now, even if spool has arrived oil return position, cannot open without oil pressure, oil return valve due in now oil-in, or
The oil return of actuator port A1 cannot be realized.Therefore, this banked direction control valves avoid shut down time due to maloperation oil return and make
The lifting platform obtaining fork truck, farm machinery or lift truck can quickly be fallen, and causes goods or staff during rapid descent
Can be damaged or injured problem.
The multiple directional control valve stopping maloperation of the present invention, it is only necessary to offer an oil return on the valve body of prior art and control passage
Rear valve does some adaptive improvement simultaneously can realize manual and oil control and combine the purpose of oil return, simple in construction easily realizes.
The multiple directional control valve stopping maloperation of the present invention, even if there being the maloperation of spool also will not oil return, raising when having shutdown
The security reliability of banked direction control valves etc., advantages of simple structure and simple.
Accompanying drawing explanation
Fig. 1 is the spool of the multiple directional control valve stopping maloperation of the present invention sectional view when oil-feed position.
Fig. 2 is the spool of the multiple directional control valve stopping maloperation of the present invention sectional view when middle position holding position.
Fig. 3 is the spool of the multiple directional control valve stopping maloperation of the present invention sectional view when oil return position.
Fig. 4 is spool and the schematic perspective view of valve body (multiple actuator port) of the multiple directional control valve stopping maloperation of the present invention.
Fig. 5 is the spool of the banked direction control valves of the prior art sectional view when oil-feed state.
Fig. 6 is the spool of the banked direction control valves of the prior art sectional view when middle position hold mode.
Fig. 7 is the spool of the banked direction control valves of the prior art sectional view when oil return state.
Label in accompanying drawing 1～accompanying drawing 7: 1 valve body, 2 spools, 3 oil-feed annular grooves, 4 elongated holes, 5 drainback passages, 6 oil return valves,
7 oil returns control passage, and 8 first back-moving springs, 9 bonnets, 10 second back-moving springs, 11 spool sticks, 12 oil-feeds are unidirectional
Valve, 13 boss, 14 valve pockets, 15 oil return spools, 16 oil inlet passages.
Below by way of detailed description of the invention, and the invention will be further described to combine accompanying drawing.
Detailed description of the invention
Seeing figure accompanying drawing 1～accompanying drawing 4, the multiple directional control valve stopping maloperation of the present invention, including valve body 1 and spool 2；Valve body
1 is cylindrical body, and described spool 2 is cylinder；When described spool 2 inserts the valve pocket 14 of described valve body 1, described valve body 1
Coaxial with described spool 2；
The inner peripheral surface of described valve body 1 is provided with an oil-feed annular groove 3, described oil-feed annular groove 3 and the oil-in on valve body 1
P1 is connected；Being provided with elongated hole 4 on described spool 2, the length direction of described elongated hole 4 is axial consistent with described spool 2；
Described spool 2 can moving axially along described valve body 1, when spool 2 moves axially from left to right successively oil-feed position, in
Change between position holding position and oil return position；Spool 2 therefrom position holding position moves to oil return position, when spool 2 is positioned at oil return position,
The oil return valve 6 that be will be located in drainback passage 5 by the hydraulic oil in oil inlet P 1 is opened to realize oil return.
The multiple directional control valve stopping maloperation of the present invention, oil-feed position is similar with the banked direction control valves of prior art with middle position holding position.?
Oil return position, the present invention is to be opened by oil return valve by the hydraulic oil of oil-in, the most just realizes the oil return of actuator port A1.This
In oil return control mode, have employed the mode of manual and oily control combination to realize oil return.If electromotor is shut down by staff,
So with regard to no pressure in oil-in.Now, even if spool has arrived oil return position, due in now oil-in without oil pressure, oil return valve without
Method is opened, and still cannot realize the oil return of actuator port A1.Therefore, this banked direction control valves avoids when shutting down owing to grasping by mistake
Make and oil return and the lifting platform of fork truck, farm machinery or lift truck can quickly be fallen, cause goods or staff quickly
Can be damaged during landing or injured problem.
Only electromotor open oil-in have input pressure time, simultaneously staff manually banked direction control valves is moved to oil return position time
Waiting, actuator port A1 could oil return.
Oil inlet P 1, oil return inlet T 1 and actuator port A1 is offered on described valve body 1；Oil return control is offered in described valve body 1
Passage 7 processed；Described oil return valve 6 includes oil return spool 15 and the first back-moving spring 8；One end of described first back-moving spring 8 with
The right-hand member of described oil return spool 15 abuts against, and the other end of described first back-moving spring 8 abuts against with bonnet 9；Described bonnet 9
It is arranged at the right part of valve body 1；The left end of described oil return spool 15 is inserted in described oil return and controls in passage 7, and by oil return control
Described oil return spool 15 is pressed to described first back-moving spring 8 to open drainback passage by the hydraulic oil in passage 7 processed, it is achieved work
The oil return of hydraulic fluid port A1.
When described spool 2 is in oil-feed position, described oil return controls passage 7 and is connected between described oil return inlet T 1, described time
Fuel tap 6 cuts out.
The right-hand member of described spool 2 is provided with the second back-moving spring 10；Second reset bullet described in when spool 2 is positioned at middle position holding position
Spring 10 is in the raw；The left end of described spool 2 is provided with spool stick 11.
Described elongated hole 4 is mounting hole or rectangular opening.
The multiple directional control valve stopping maloperation of the present invention, offers oil-feed annular groove in the valve pocket 14 of valve body, described oil-feed annular groove with enter
It is connected between hydraulic fluid port P.Oil-in, oil return opening and actuator port it is provided with on described valve body；It is provided with and work in described valve body
The oil inlet passage 16 being connected as hydraulic fluid port and drainback passage.
Described oil return opening communicates with the spool right part of the valve pocket of described valve body.Elongated hole is offered on described spool.Spool is entering
During oil level, elongated hole connection oil-feed annular groove and oil inlet passage 16 so that oil inlet P 1 is actuator port A1 fuel feeding.Spool is in middle position
During holding position, elongated hole only connects with oil-feed annular groove so that oil inlet passage 16 and oil return control passage all cannot obtain pressure oil,
Actuator port A1 keeps stable.Spool is when oil return position, and elongated hole connection oil-feed annular groove controls passage with oil return.If now sent out
Motivation is in running order, now has pressure oil at oil inlet P 1, and this pressure oil enters oil return control passage and backs down oil return valve, makes
Obtain and be connected between actuator port A1 and drainback passage, actuator port A1 oil return.
As it is shown in figure 1, spool is in oil-feed position.When spool is in oil-feed position, oil inlet P 1 is by oil-feed annular groove, elongated hole and enters
Oil passage 16 is connected, and input pressure opens the in line check valve 12 in oil inlet passage 16, the hydraulic oil input of oil inlet P 1
To actuator port A1.
As in figure 2 it is shown, spool is in middle position holding position.When spool is in middle position holding position, oil inlet P 1, oil-feed annular groove, length
Hole is connected；Elongated hole is neither connected with oil inlet passage 16, does not controls passage with oil return and is connected.Now, actuator port
A1 had not both had oil-feed, yet not oil return.
As it is shown on figure 3, spool is in oil return position.When spool is in oil return position, oil inlet P 1 is by oil-feed annular groove, elongated hole and returns
Oil control passage be connected, input pressure opens the oil return valve being positioned at drainback passage, actuator port A1 by drainback passage,
Valve pocket is connected with oil return opening, actuator port A1 oil return.
The multiple directional control valve of the present invention, its oil return needs two conditions: have pressure oil in (1) oil inlet P 1；(2) spool is in
Oil return position.The two condition is indispensable, therefore when shutting down, even if there is people to move banked direction control valves to oil return position, working oil by mistake
Mouthful A1 also will not oil return so that fork truck, farm machinery or lift truck etc. do not have unexpected down maneuver, improve multichannel
The safe and reliable property of valve.
When being embodied as, multiple actuator port also can be set on described valve body.By multiple actuator ports along described valve body periphery
It is uniformly arranged, multiple actuator ports highly consistent.At each actuator port, it is respectively provided with corresponding oil inlet passage 16 and oil return
Valve.So, as long as rotational valve core, oil-feed and the oil return that can realize multiple actuator port control so that the banked direction control valves of the present invention
There is multiple control function.Further, each actuator port can realize manual and oily control and combine oil return.Multiple actuator port is set
Valve body as shown in Figure 4.Pass through rotational valve core so that spool is positioned at different indexings, can be different actuator port fuel feeding,
Improve the versatility of banked direction control valves.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The technical staff of the industry should
This understanding, the present invention is not restricted to the described embodiments, the principle of the simply present invention described in above-described embodiment and description,
The present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements both fall within
In the range of claimed invention.The protection domain of application claims is defined by appending claims and equivalent thereof.
Claims (5)
1. stop the multiple directional control valve of maloperation, it is characterized in that, including valve body (1) and spool (2)；Valve body (1) is tubular
Body, described spool (2) is cylinder；When described spool (2) inserts valve pocket (14) of described valve body (1), described valve
Body (1) is coaxial with described spool (2)；
The inner peripheral surface of described valve body (1) is provided with an oil-feed annular groove (3), described oil-feed annular groove (3) and valve body (1)
On oil inlet P 1 be connected；Being provided with elongated hole (4) on described spool (2), the length direction of described elongated hole (4) is with described
Spool (2) axially consistent；Described spool (2) can moving axially along described valve body (1), spool (2) is by a left side
Change between oil-feed position, middle position holding position and oil return position successively when moving axially to the right side；Spool (2) therefrom position holding position moves
To oil return position, when spool (2) is positioned at oil return position, the hydraulic oil in oil inlet P 1 will be located in returning in drainback passage (5)
Fuel tap (6) is opened to realize oil return.
The multiple directional control valve stopping maloperation the most according to claim 1, is characterized in that, described valve body is offered on (1)
There are oil inlet P 1, oil return inlet T 1 and actuator port A1；Offer oil return in described valve body (1) and control passage (7)；Described
Oil return valve (6) includes oil return spool (15) and the first back-moving spring (8)；One end of described first back-moving spring (8) and institute
The right-hand member stating oil return spool (15) abuts against, and the other end of described first back-moving spring (8) abuts against with bonnet (9)；Institute
State bonnet (9) and be arranged at the right part of valve body (1)；The left end of described oil return spool (15) is inserted in described oil return and controls logical
In road (7), and described oil return spool (15) is pressed to described first reset bullet by the hydraulic oil controlled in passage (7) by oil return
Spring (8) is to open drainback passage, it is achieved the oil return of actuator port A1.
The multiple directional control valve stopping maloperation the most according to claim 2, is characterized in that, when described spool (2) is in
During oil-feed position, described oil return controls passage (7) and is connected between described oil return inlet T 1, and described oil return valve (6) cuts out.
The multiple directional control valve stopping maloperation the most according to claim 1 and 2, is characterized in that, described spool (2)
Right-hand member is provided with the second back-moving spring (10)；Second back-moving spring (10) place described in when spool (2) is positioned at middle position holding position
In naturalness；The left end of described spool (2) is provided with spool stick (11).
The multiple directional control valve stopping maloperation the most according to claim 1 and 2, is characterized in that, described elongated hole (4) is
Mounting hole or rectangular opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410636964.5A CN104389833B (en) | 2014-11-12 | 2014-11-12 | Stop the multiple directional control valve of maloperation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410636964.5A CN104389833B (en) | 2014-11-12 | 2014-11-12 | Stop the multiple directional control valve of maloperation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104389833A CN104389833A (en) | 2015-03-04 |
| CN104389833B true CN104389833B (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410636964.5A Active CN104389833B (en) | 2014-11-12 | 2014-11-12 | Stop the multiple directional control valve of maloperation |
Country Status (1)
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| CN (1) | CN104389833B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201560992U (en) * | 2009-04-30 | 2010-08-25 | 泸州江阳长江液压科技有限公司 | Pilot-operated hydraulic lock multi-way directional valve set |
| CN201891689U (en) * | 2010-11-30 | 2011-07-06 | 天津工程机械研究院 | Cartridge inserted two-position three-way electro-hydraulic reversing valve |
| CN202132293U (en) * | 2011-03-10 | 2012-02-01 | 三一重工股份有限公司 | M-type function directional valve and engineering machinery |
| DE102011055902A1 (en) * | 2011-11-30 | 2013-06-06 | Jui-Yuan Cheng | Rotating hydraulic valve i.e. manifold valve, for controlling flow direction of hydraulic oil for operating hydraulic motor, has shaft rotated opposite to body in positions such that openings of body are aligned after openings of shaft |
| CN204213090U (en) * | 2014-11-12 | 2015-03-18 | 合肥长源液压股份有限公司 | Stop the multiple directional control valve of misoperation |
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2014
- 2014-11-12 CN CN201410636964.5A patent/CN104389833B/en active Active
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| CN104389833A (en) | 2015-03-04 |
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