CN107420367A - A kind of harvester hand control valve - Google Patents
A kind of harvester hand control valve Download PDFInfo
- Publication number
- CN107420367A CN107420367A CN201710883978.0A CN201710883978A CN107420367A CN 107420367 A CN107420367 A CN 107420367A CN 201710883978 A CN201710883978 A CN 201710883978A CN 107420367 A CN107420367 A CN 107420367A
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- Prior art keywords
- oil
- control
- control valve
- reversing
- valve
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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
- 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
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Lifting Devices For Agricultural Implements (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a kind of harvester hand control valve, belong to technical field of hydraulic pressure.It solves the problems, such as that existing harvester hand control valve control stability and precise degrees are poor.This harvester hand control valve includes valve body, and reversing control valve one connects oil inlet and oil return opening with reversing control valve two by series-parallel mode；The control oil circuit one of reversing control valve one can be connected with the control port one on valve body, control and fixed orifice is provided with oil circuit one, also have connection oil circuit on reversing control valve one；Reversing control valve two has oil feeding line and oil-feed oil circuit, throttling pore is provided with oil-feed oil circuit, reversing control valve two control oil circuit two and control oil circuit three can respectively with the control port two on valve body and control port tee joint, reversing control valve two also has the switching oil circuit connected with the switching hydraulic fluid port on valve body, and oil feeding line is connected with switching oil circuit by flow pressure control valve.This harvester hand control valve improves control accuracy and stability.
Description
Technical field
The invention belongs to technical field of hydraulic pressure, is related to a kind of harvester hand control valve.
Background technology
Harvester is the machinery of integration harvesting crops, disposable to complete harvesting, threshing, and grain is focused on into storage
Storehouse, then grain is being transported on transport vehicle by conveyer belt.For example, current rice harvester main actions have five：
Reel lift, gun barrel lifting, gun barrel rotation, taiwan cut off and landing and left and right turn.Rice harvesting machine hydraulic system is configurable to
Reel lift, gun barrel lift and rotate to be integral valve, and taiwan cut off and landing and left and right turn are integrated valve.
The integral valve of taiwan cut off and landing and left and right turn, such as the applicant once research and develop and apply for Chinese patent【Application number
201520287810.X；Authorization Notice No. CN204610967U】A kind of agricultural machinery ceding of Taiwan switching valve, including valve body, positioned at valve body
Interior steering valve pocket and lifting valve pocket, there is oil inlet and oil return opening on valve body, has what is be connected with lifting valve pocket on valve body
Oil inlet one, oil return opening one and lifting work mouth, also have with turning to left-hand rotation working hole, the right-hand rotation work that valve pocket is connected on valve body
Make mouth, steering cylinder oil return opening, oil inlet two and oil return opening two, oil return opening one, oil return opening two pass through drainback passage and oil return opening
Connection, oil inlet one are connected by oil inlet passage one with oil inlet, and oil inlet two is connected by oil inlet passage two with oil inlet one,
Turn to valve pocket and lift valve intracavitary is respectively arranged with the steering valve rod being parallel to each other and lifting valve rod, lifting valve rod can be along liter
Drop valve pocket, which slides, makes lifting work mouth be connected with oil inlet one or oil return opening one, and turning to valve rod can slide along valve pocket is turned to
The selection of oil inlet two is set to be connected with left-hand rotation working hole, right-hand rotation working hole or steering cylinder oil return opening.
Above-mentioned agricultural machinery ceding of Taiwan switching valve can control taiwan cut off and landing and left and right turn, and control reel lift, gun barrel liter
Drop and the control valve of rotation still need to be redesigned.
And existing harvester control valve, for example, Chinese patent【Application number 201520747649.X；Authorization Notice No. CN
204985134U】A kind of disclosed tunnel of monoblock type four controls reversal valve, including valve body, the oil inlet being arranged on valve body, oil return
Mouth, the left interface of steering cylinder, the right interface of steering cylinder, steering cylinder oil return interface, unloading oil cylinder rodless cavity interface, unloading oil cylinder
Rod chamber interface, ceding of Taiwan oil cylinder interface and winder oil cylinder interface, interface left with steering cylinder, steering oil are installed on valve body
The right interface of cylinder, the steering cylinder spool control valve of steering cylinder oil return orifice and unloading oil cylinder rodless cavity interface, unloading oil cylinder
The unloading oil cylinder spool control valve of rod chamber orifice and the ceding of Taiwan oil cylinder spool control valve of ceding of Taiwan oil cylinder orifice and group standing grain
The overflow valve taken turns the winder oil cylinder spool control valve of oil cylinder orifice and connected with oil inlet.
Above-mentioned four tunnels control structure of reversing valve is simple, easy to operate, in light weight, compact-sized.But above-mentioned control valve
Structure has problems in that, oil circuit is more so that the pressure loss is larger in valve body, and hydraulic oil is insufficient or pressure change
It is larger, cause the oil pressure of control oil unstable, have impact on the stability and precise degrees of control.Also, existing hydraulic pressure commutation
Valve arrangement, speed governing area is shorter, easily produces impacting with high pressure, and after valve rod returns to middle position, the hydraulic lock return time is longer, is unfavorable for holding
The locking of row mechanism.
The content of the invention
The purpose of the present invention is above mentioned problem be present for existing technology, it is proposed that a kind of harvester hand control valve,
Present invention solves the technical problem that it is how to make executing agency's stabilization of hand control valve control harvester, precisely action.
The purpose of the present invention can be realized by following technical proposal：A kind of harvester hand control valve, the control manually
Valve processed includes valve body, has oil inlet and oil return opening on the valve body, there is reversing control valve one and commutation to control in the valve body
Valve two processed, it is characterised in that the reversing control valve one and reversing control valve two by series-parallel mode connect oil inlet and
Oil return opening, also there is control port one, control port two, control port three and switching hydraulic fluid port on the valve body；The commutation control
The control oil circuit one of valve one processed can be connected with the control port one on valve body, and fixed restriction is provided with the control oil circuit one
Hole, also there is the connection oil circuit for being used for connecting with reversing control valve two on the reversing control valve one；The reversing control valve two
With for the connection oil circuit oil feeding line the being connected and oil-feed oil circuit being connected with oil feeding line, on the oil-feed oil circuit
Throttling pore is provided with, the control oil circuit two and control oil circuit three of the reversing control valve two can be oily with the control on valve body respectively
Mouth two and control port tee joint, the reversing control valve two also have the switching oil circuit connected with the switching hydraulic fluid port on valve body,
The oil feeding line is connected with switching oil circuit by flow pressure control valve.
Difference with existing structure is that the reversing control valve one and reversing control valve two of this harvester hand control valve are adopted
Connected with series-parallel mode, reversing control valve two can only act when reversing control valve two is located at middle position, prevent out
The possibility now malfunctioned.And by setting throttling pore on the oil-feed oil circuit of reversing control valve two, and in oil feeding line and turn
Connect oil circuit and flow pressure control valve is directly set so that the constant pressure differential of throttling pore inlet and outlet.Reversing control valve two commutates
When, the flow of oil-feed oil circuit gradually changes from small to large, until reaching the constant flow rate of throttling pore.So as to so that commutation control
The control oil circuit two of valve two processed and the flow of control oil circuit three are refined and control and reduce the generation of fluctuation, play to execution machine
Structure is precisely controlled, and the stability of executing agency's action also significantly improves.Also, pass through the control oil circuit in reversing control valve one
Fixed orifice is set on one, the flow of control oil circuit one can be made, impact phenomenon caused by avoiding over feeding, is further carried
The stability for the executing agency that high reversing control valve one controls.
In above-mentioned harvester hand control valve, the reversing control valve one and reversing control valve two include control oil
Chamber, the control oil pocket is interior to have oil-feed tank, oil-recovery tank, control chamber oil groove one, control chamber oil groove two and control chamber oil groove three, institute
The quantity for stating oil-feed tank is two, and one of oil-feed tank is located at the opening position with control chamber oil groove three adjacent, another
Oil-feed tank is located at two adjacent side of control chamber oil groove one and control chamber oil groove；The control chamber oil groove one and control chamber oil groove two
Opposite side is respectively provided with an oil-recovery tank.
Compared with five oil duct hydraulicdirectional control valve structures of prior art, by setting multiple oil-feed tanks, oil-recovery tank, middle position
When, oil-feed tank and control chamber oil groove three are gone rancid by the groove of valve rod, and circulation area is gone rancid more greatly compared to stem internal, is reduced
The pressure loss of middle position.Meanwhile the speed governing area of reversing control valve one and reversing control valve two is longer so that executing agency runs
It is more steady, avoid the generation of impact phenomenon.
In above-mentioned harvester hand control valve, the position of control chamber oil groove one is placed in the middle, the control chamber oil groove two
It is located at the both sides of control chamber oil groove one respectively with control chamber oil groove three, the oil-recovery tank adjacent with control chamber oil groove two is positioned at control oil
One end of chamber, the other end of the control oil pocket also have an oil-recovery tank adjacent with the position of control chamber oil groove three.By
Control chamber oil groove three close to control the oil pocket other end opening position set oil-recovery tank, to control oil pocket and valve rod opposite side it is close
Seal carries out low-voltage variation, avoids the impacting with high pressure by control chamber oil groove three.
In above-mentioned harvester hand control valve, the control chamber oil groove one and control chamber oil groove of the reversing control valve one
Two are connected with control oil circuit one, and hydraulic lock is provided with the control oil circuit one.By setting hydraulic lock executing agency to exist
Being failure to actuate makes to be locked.
In above-mentioned harvester hand control valve, winder control valve rod, institute are provided with the reversing control valve one
State when winder control valve rod is located at middle position and form Y type oil circuits.Reversing control valve uses Y type oil circuits, when reversing control valve one
When middle position, hydraulic lock can returning quickly, without being separately provided hydraulic pressure pore structure on valve body.
In above-mentioned harvester hand control valve, the winder control valve rod of the reversing control valve one corresponds to control chamber
The position of oil groove three and oil-feed tank has logical tank deck rank one, and the winder control valve rod of the reversing control valve one corresponds to control chamber
Oil groove one and oil-recovery tank have logical tank deck rank two.When being connected by setting logical tank deck rank one to increase control chamber oil groove three with oil-feed tank
In-line, set logical tank deck rank two to form Y type oil circuits when causing one middle position of reversing control valve.
In above-mentioned harvester hand control valve, gun barrel control valve rod is provided with the reversing control valve two, it is described
Gun barrel control valve rod forms O-shaped oil circuit when being located at middle position.
In above-mentioned harvester hand control valve, the control chamber oil groove one of the reversing control valve two is by controlling oil circuit
Two connect with the control port two on valve body, and the control chamber oil groove two is by controlling oil circuit three and control port tee joint, institute
Control chamber oil groove three is stated to connect with switching hydraulic fluid port by oil circuit of transferring.Control port two, control can be given by reversing control valve two
Liquefaction mouth three and switching hydraulic fluid port fuel feeding.
In above-mentioned harvester hand control valve, also there is reversing control valve three, the commutation control in the valve body
Valve three is connected the oil inlet and oil return opening of valve body, the control of the reversing control valve three with reversing control valve one by way of in parallel
Fixed orifice is provided with liquefaction mouth four.Reversing control valve three is set by way of in parallel with reversing control valve one, commutated
Control valve one and reversing control valve three distribute hydraulic oil, realize to being controlled while multiple executing agencies.
In above-mentioned harvester hand control valve, the reversing control valve two with reversing control valve one and commutation by controlling
The mode that valve three processed is connected connects the oil inlet and oil return opening of valve body.Such connected mode so that reversing control valve one, commutation
Control valve two and the globality of reversing control valve three are more preferable, it is possible to achieve cooperate the action of control executing agency, more reasonably
Hydraulic oil is assigned with, prevents malfunction.
In above-mentioned harvester hand control valve, the reversing control valve three uses and the identical knot of reversing control valve two
Structure.
In above-mentioned harvester hand control valve, grain barrel-removing control valve rod, institute are provided with the reversing control valve three
State when grain barrel-removing control valve rod is located at middle position and form Y type oil circuits, the control chamber on the valve body with the reversing control valve three
Oil groove one and control chamber oil groove two are provided with hydraulic pressure by controlling oil circuit four to be connected with control port four on the control oil circuit four
Lock.
Compared with prior art, it is the advantages of this harvester hand control valve：
1st, passing through for this harvester hand control valve sets reversing control valve one and reversing control valve two in valve body, commutation
Control valve one is connected with reversing control valve two by connection in series-parallel, for controlling multiple executing agencies, realizes multiple commutation controls
Integrating for valve, simplifies the structure of control valve.
2nd, this harvester hand control valve is provided with fixed orifice on the control oil circuit one of reversing control valve one, commutation
Throttling pore is set on the oil-feed oil circuit of control valve one, and directly sets flow pressure to control in oil feeding line and switching oil circuit
Valve so that the precision and stability of hand control valve control executing agency action significantly improves.
Brief description of the drawings
Fig. 1 is the hydraulic schematic diagram of this harvester hand control valve.
Fig. 2 is the main structure diagram of this harvester hand control valve.
Fig. 3 is the present invention looks up structural representation of this harvester hand control valve.
Fig. 4 is the side structure schematic view of this harvester hand control valve.
Fig. 5 is the cross section structure diagram in A-A directions in Fig. 3.
Fig. 6 is the cross section structure diagram in B-B directions in Fig. 3.
Fig. 7 is the cross section structure diagram in E-E directions in Fig. 3.
Fig. 8 is the cross section structure diagram in C-C directions in Fig. 4.
Fig. 9 is the cross section structure diagram in D-D directions in Fig. 4.
In figure, 1, valve body；P, oil inlet；T, oil return opening；BH, control port one；A, control port two；B, control port
Three；C, switching hydraulic fluid port；XL, control port four；2nd, reversing control valve one；2a, control oil circuit one；2b, connection oil circuit；G1, dial standing grain
Wheel control valve rod；3rd, reversing control valve two；3a, oil feeding line；3b, oil-feed oil circuit；3b1, throttling pore；3c, control oil circuit two；
3d, switching oil circuit；G2, gun barrel control valve rod；4th, flow pressure control valve；5th, reversing control valve three；5a, control oil circuit four；G3、
Grain barrel-removing controls valve rod；6th, hydraulic lock；7th, tank deck rank one is led to；8th, tank deck rank two is led to；9th, fixed orifice；10th, main safety valve；Q、
Control oil pocket；P1, oil-feed tank；T1, oil-recovery tank；A1, control chamber oil groove one；B1, control chamber oil groove two；C1, control chamber oil groove three.
Embodiment
It is the specific embodiment of the present invention and with reference to accompanying drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
This harvester hand control valve includes valve body 1, reversing control valve 1, reversing control valve 23, oil inlet P, oil return
Mouth T, the BH of control port one, the A of control port two, the B of control port three and switching hydraulic fluid port C.
Introduced exemplified by the hand control valve that the present embodiment rotates for control reel lift, grain barrel-removing lifting and gun barrel
The embodiment of this harvester hand control valve.As shown in figure 1, this harvester hand control valve also includes reversing control valve
35, also there is the XL of control port four on valve body 1.Reversing control valve 1, reversing control valve 23 and reversing control valve 35 collect
Into being arranged in valve body 1, reversing control valve 1 connects oil inlet P and oil return with reversing control valve 23 by series-parallel mode
Mouth T, the mode in parallel with reversing control valve 35 of reversing control valve 1 connect oil inlet P and oil return inlet T.Preferably,
In the present embodiment, reversing control valve 23 is connected valve body 1 by way of being connected with reversing control valve 1 and reversing control valve 35
Oil inlet P and oil return inlet T.Main safety valve 10 is additionally provided between oil inlet P and oil return inlet T, main safety valve 10 is overflow valve.
As shown in Fig. 2, Fig. 3 and Fig. 5, the 2a of control oil circuit one energy and valve body of the reversing control valve 1 of reversing control valve 1
The BH of control port one on 1 is connected, and makes reversing control valve 1 can be used in controlling reel lift.Such as Fig. 2, Fig. 3, Fig. 4 and
Shown in Fig. 6, the control 3c of oil circuit two of reversing control valve 23 and control oil circuit three (not shown) can respectively with valve body 1
The A of control port two connects with the B of control port three, and the switching oil circuit 3d and the switching hydraulic fluid port C on valve body 1 of reversing control valve 23 connect
It is logical, reversing control valve 23 is can be used in the hydraulic circuit for controlling gun barrel to rotate and exporting for connecting other control valve modules.
As shown in Fig. 2, Fig. 3 and Fig. 7, the control oil circuit four of reversing control valve 35 can connect with the XL of control port four on valve body 1 so that
Reversing control valve 35 can be used in controlling grain barrel-removing lifting.
As shown in Fig. 5, Fig. 6 and Fig. 7, reversing control valve 1, reversing control valve 23 and reversing control valve 23 include control
There is oil-feed tank P1, oil-recovery tank T1, the A1 of control chamber oil groove one, the B1 of control chamber oil groove two and control in liquefaction chamber Q, control oil pocket Q
Chamber oil groove three C1, oil-feed tank P1 quantity are two, and one of oil-feed tank P1 is positioned at adjacent with the C1 of control chamber oil groove three
Opening position, another oil-feed tank P1 is located at the A1 of control chamber oil groove one and the adjacent sides of the B1 of control chamber oil groove two；Control chamber oil groove
One A1 and the B1 of control chamber oil groove two opposite side are respectively provided with an oil-recovery tank T1.Set in the control oil pocket Q of reversing control valve 1
There is winder to control valve rod G1, gun barrel control valve rod G2, commutation control three are provided with the control oil pocket Q of reversing control valve 23
Control oil pocket Q in be provided with grain barrel-removing control valve rod G3, winder control valve rod G1, gun barrel control valve rod G2 and grain barrel-removing control
Valve rod G3 processed can slide along corresponding control oil pocket Q controls each oil groove to connect or block, and is performed so as to each drive
Mechanism action.
As shown in Fig. 5, Fig. 6 and Fig. 7, preferably, the A1 positions of control chamber oil groove one are placed in the middle, the B1 of control chamber oil groove two
It is located at the A1 of control chamber oil groove one both sides, the oil-recovery tank T1 position adjacent with the B1 of control chamber oil groove two respectively with the C1 of control chamber oil groove three
In control oil pocket Q one end, the control oil pocket Q other end also has an oil-recovery tank adjacent with the C1 positions of control chamber oil groove three
T1；By the C1 of control chamber oil groove three close to control the oil pocket Q other ends opening position set oil-recovery tank T1, to control oil pocket Q and
Control the sealing ring of valve rod opposite side to carry out low-voltage variation, avoid the impacting with high pressure by the C1 of control chamber oil groove three.
As shown in figure 5 and figure 7, the structure of reversing control valve 35 and reversing control valve 23 is essentially identical.Reversing control valve
The position that one 2 control valve rod corresponds to the C1 of control chamber oil groove three and oil-feed tank P1 has logical tank deck rank 1, reversing control valve 1
Control valve rod correspond to the A1 of control chamber oil groove one and oil-recovery tank T1 there is logical tank deck rank 28.By setting logical tank deck rank 1 to increase
The in-line when C1 of control chamber oil groove three connects with oil-feed tank P1, when the logical tank deck rank 28 of setting causes one 2 middle position of reversing control valve
Form Y type oil circuits.The A1 of control chamber oil groove one and the B1 of control chamber oil groove two of reversing control valve 1 pass through hydraulic lock 6 and control oil
The 2a of road one is connected, the oil inlet end of the groove of one A1 connections hydraulic lock of control chamber oil groove 6, the control of the B1 connections hydraulic lock 6 of control chamber oil groove two
End processed.The grain barrel-removing control valve rod G3 of reversing control valve 35 also forms Y type oil circuits when being located at middle position, have commutation control on valve body 1
The A1 of control chamber oil groove one and the B1 of control chamber oil groove two of valve 35 processed are controlled by controlling oil circuit four to be connected with the XL of control port four
Hydraulic lock 6 is also equipped with oil circuit four.Fixed orifice 9 is provided with the control 2a of oil circuit one and control oil circuit four.
As shown in figure 5, also there is the connection oil circuit 2b for being used for connecting with reversing control valve 23 on reversing control valve 1.This
Also there is the connection oil circuit 2b for being used for connecting with reversing control valve 23 in embodiment, on reversing control valve 35.Reversing control valve
Oil circuit 2b is connected on one 2 with the C1 of control chamber oil groove three of reversing control valve 35 to be connected, then by being connected on reversing control valve 1
Oil circuit 2b connects with reversing control valve 23, realizes reversing control valve 23 and reversing control valve 1 and the string of reversing control valve 35
It is in parallel.
As shown in fig. 6, the gun barrel control valve rod G2 of reversing control valve 23 forms O-shaped oil circuit when being located at middle position.Such as Fig. 8 and
Shown in Fig. 9, reversing control valve 23, which has, to be used to be connected with the connection oil circuit 2b oil feeding line 3a being connected and with oil feeding line 3a
Throttling pore 3b1, oil feeding line 3a and switching oil circuit 3d are provided with logical oil-feed oil circuit 3b, oil-feed oil circuit 3b and passes through flow pressure
Force control valve 4 is connected.The A1 of control chamber oil groove one of reversing control valve 23 is by controlling the 3c of oil circuit two and the control oil on valve body 1
Mouth two A connections, the B1 of control chamber oil groove two is by controlling the (not shown) of oil circuit three to be connected with the B of control port three, control chamber oil
The C1 of groove three is connected by the oil circuit 3d that transfers with switching hydraulic fluid port C.The A of control port two, control oil can be given by reversing control valve 23
Three B of mouth and switching hydraulic fluid port C fuel feeding.
This harvester hand control valve is integrated with multiple reversing control valves in valve body 1, can control harvester reel,
The action of multiple executing agencies such as grain barrel-removing and gun barrel, integrated level is higher, and each reversing control valve passes through the oil circuit inside valve body 1
Connection, simplifies connecting line.This harvester hand control valve on the oil-feed oil circuit 3b of reversing control valve 23 also by setting
Throttling pore 3b1, and flow pressure control valve 4 is directly set in oil feeding line 3a and switching oil circuit 3d so that throttling pore 3b1
The constant pressure differential of inlet and outlet.When reversing control valve 23 commutates, oil-feed oil circuit 3b flow gradually changes from small to large, until
Reach throttling pore 3b1 constant flow rate.So as to so that the 3c of control oil circuit two and the control (figure of oil circuit three of reversing control valve 23
Not shown in) flow be refined control and reduce the generation of fluctuation, play and executing agency be precisely controlled, executing agency
The stability of action also significantly improves.Also, by setting fixed orifice on the 2a of control oil circuit one of reversing control valve 1
9, the 2a of control oil circuit one flow can be made, over feeding is avoided, caused impact phenomenon, further improve reversing control valve one
The stability of the executing agency of 2 controls.
Reversal valve in this harvester hand control valve is by setting multiple oil-feed tank P1, oil-recovery tank T1, during middle position, oil-feed
By controlling the groove of valve rod to go rancid, circulation area is gone rancid more compared to control stem internal by groove P1 and the C1 of control chamber oil groove three
Greatly, the pressure loss of middle position is reduced.Meanwhile reversal valve speed governing area is longer so that executing agency's operation is more steady, avoids rushing
Hit the generation of phenomenon.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (10)
1. a kind of harvester hand control valve, the hand control valve includes valve body (1), has oil inlet on the valve body (1)
(P) and oil return opening (T), there is reversing control valve one (2) and reversing control valve two (3) in the valve body (1), it is characterised in that
The reversing control valve one (2) connects oil inlet (P) and oil return opening (T) with reversing control valve two (3) by series-parallel mode,
Also there is control port one (BH), control port two (A), control port three (B) and switching hydraulic fluid port (C) on the valve body (1)；Institute
Stating the control oil circuit one (2a) of reversing control valve one (2) can be connected with the control port one (BH) on valve body (1), the control
Fixed orifice (9) is provided with oil circuit one (2a), also has on the reversing control valve one (2) and is used for and reversing control valve two
(3) the connection oil circuit (2b) of connection；The reversing control valve two (3) has the fuel feeding oil for being used to be connected with connection oil circuit (2b)
Road (3a) and the oil-feed oil circuit (3b) being connected with oil feeding line (3a), throttling pore is provided with the oil-feed oil circuit (3b)
(3b1), the control oil circuit two (3c) of the reversing control valve two (3) and control oil circuit three can respectively with the control on valve body (1)
Hydraulic fluid port two (A) connects with control port three (B), and the reversing control valve two (3) also has and the switching hydraulic fluid port on valve body (1)
(C) the switching oil circuit (3d) of connection, the oil feeding line (3a) and switching oil circuit (3d) pass through flow pressure control valve (4) phase
Even.
2. harvester hand control valve according to claim 1, it is characterised in that the reversing control valve one (2) and change
Include control oil pocket (Q) to control valve two (3), there is oil-feed tank (P1), oil-recovery tank (T1), control in the control oil pocket (Q)
Chamber oil groove one (A1), control chamber oil groove two (B1) and control chamber oil groove three (C1) processed, the quantity of the oil-feed tank (P1) is two
It is individual, and one of oil-feed tank (P1) is located at the opening position adjacent with control chamber oil groove three (C1), another oil-feed tank (P1) position
In control chamber oil groove one (A1) and the adjacent side of control chamber oil groove two (B1)；The control chamber oil groove one (A1) and control chamber oil groove
Two (B1) opposite side is respectively provided with an oil-recovery tank (T1).
3. harvester hand control valve according to claim 2, it is characterised in that control chamber oil groove one (A1) position
Between two parties, the control chamber oil groove two (B1) and control chamber oil groove three (C1) are located at the both sides of control chamber oil groove one (A1) respectively, with
The adjacent oil-recovery tank (T1) of control chamber oil groove two (B1) is positioned at one end of control oil pocket (Q), the other end of the control oil pocket (Q)
Also there is an oil-recovery tank (T1) adjacent with control chamber oil groove three (C1) position.
4. the harvester hand control valve according to Claims 2 or 3, it is characterised in that the reversing control valve one (2)
Control chamber oil groove one (A1) and control chamber oil groove two (B1) connect with control oil circuit one (2a), are set on the control oil circuit one (2a)
It is equipped with hydraulic lock (6).
5. the harvester hand control valve according to Claims 2 or 3, it is characterised in that in the reversing control valve one (2)
Winder control valve rod (G1) is provided with, the winder control valve rod (G1) forms Y type oil circuits when being located at middle position.
6. harvester hand control valve according to claim 5, it is characterised in that the reversing control valve one (2) is dialled
The position of the corresponding control chamber oil groove three (C1) of standing grain wheel control valve rod (G1) and oil-feed tank (P1) has logical tank deck rank one (7), described
The corresponding control chamber oil groove one (A1) of winder control valve rod (G1) of reversing control valve one (2) and oil-recovery tank (T1) have logical tank deck
Rank two (8).
7. the harvester hand control valve according to Claims 2 or 3, it is characterised in that in the reversing control valve two (3)
Gun barrel control valve rod (G2) is provided with, the gun barrel control valve rod (G2) forms O-shaped oil circuit when being located at middle position.
8. harvester hand control valve according to claim 7, it is characterised in that the control of the reversing control valve two (3)
Chamber oil groove one (A1) processed is by controlling oil circuit two (3c) to be connected with the control port two (A) on valve body (1), the control chamber oil groove
For two (B1) by controlling oil circuit three to be connected with control port three (B), the control chamber oil groove three (C1) passes through oil circuit of transferring (3d)
Connected with switching hydraulic fluid port (C).
9. according to the harvester hand control valve described in claim 1 or 2 or 3, it is characterised in that also have in the valve body (1)
There is reversing control valve three (5), the reversing control valve three (5) is connected valve body with reversing control valve one (2) by way of in parallel
(1) oil inlet (P) and oil return opening (T), fixed restriction is provided with the control port four (XL) of the reversing control valve three (5)
Hole (9).
10. according to the harvester hand control valve described in claim 1 or 2 or 3, it is characterised in that the reversing control valve two
(3) with being connected the oil inlet (P) of valve body (1) by way of reversing control valve one (2) and reversing control valve three (5) series connection and returning
Hydraulic fluid port (T).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710883978.0A CN107420367B (en) | 2017-09-26 | 2017-09-26 | Manual control valve of harvester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710883978.0A CN107420367B (en) | 2017-09-26 | 2017-09-26 | Manual control valve of harvester |
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| CN107420367B CN107420367B (en) | 2023-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020034023A (en) * | 2018-08-27 | 2020-03-05 | ナブテスコ株式会社 | Direction switch valve device |
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|---|---|
| CN107420367B (en) | 2023-06-30 |
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