CN103742682B - Multiway valve for harvesters - Google Patents
Multiway valve for harvesters Download PDFInfo
- Publication number
- CN103742682B CN103742682B CN201410035276.3A CN201410035276A CN103742682B CN 103742682 B CN103742682 B CN 103742682B CN 201410035276 A CN201410035276 A CN 201410035276A CN 103742682 B CN103742682 B CN 103742682B
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- Prior art keywords
- oil
- valve block
- unloading
- valve
- ceding
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/03—Driving mechanisms or parts thereof for harvesters or mowers fluid
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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
Abstract
The invention provides a multiway valve for harvesters, belongs to the field of hydraulic technologies, and solves the problem that the existing multiway valve for harvesters affects grain harvesting efficiency of the harvesters. The multiway valve for harvesters comprises a diversion valve block, a stirring valve block, an unloading valve block, a first oil incoming valve block having a first oil incoming cavity, and a return oil valve block having a return oil cavity. The diversion valve block comprises a diversion spool, a diversion main oil passage and a diversion oil incoming passage. The stirring valve block comprises a stirring spool, a stirring main oil passage and a stirring oil incoming passage. The unloading valve block comprises an unloading spool, an unloading main oil passage and an unloading oil incoming passage. The first oil incoming cavity and the return oil cavity are communicated through the diversion main oil passage, the stirring main oil passage and the unloading main oil passage. The diversion oil incoming passage, the stirring oil incoming passage and the unloading oil incoming passage are all communicated with the first oil incoming cavity. The multiway valve for harvesters links stirring, diverting and unloading actions; the multiway valve for harvesters can also link header action and stirring action according to situations; accordingly, operating efficiency of the harvesters is effectively improved.
Description
Technical field
The invention belongs to technical field of hydraulic pressure, it is related to a kind of banked direction control valves, particularly a kind of harvester banked direction control valves.
Background technology
Harvester is the machinery of integration harvesting crops.It disposably completes harvesting, threshing, and grain is focused on storage
Zang Cang, then by conveyer belt, grain is being transported on transport vehicle.
Harvester has a set of hydraulic system, is mainly used in controlling the ceding of Taiwan, winder, left steering, right turn and unloading.Mesh
Before, grain hydraulic system of harvesting machine has been used up hydraulic system as shown in fig. 13 that.It is made up of 4 operating valve blocks, including unloading
Grain valve block, group standing grain valve block, ceding of Taiwan switching valve block and steering oil cylinder valve block.Can be seen that hydraulic schematic diagram shown in from Figure 13, should
It is connected using oil pipe between the operating valve block of hydraulic system and operating valve block, lead to pipeline to connect many, complex structure.This hydraulic pressure system
There are 5 safety valves in system, need reserved a lot of installing space in assembling harvester, have a strong impact on whole productive temp.
To analyze from Hydraulic System Principle, this hydraulic system has the potential safety hazard of a pressure piling.This hydraulic system
Belong to train, the work oil return of previous action can enter at the oil-feed of next action, causes hydraulic system back pressure very high,
Pressure maximum, up to more than 30mpa, often causes a series of consequences such as booster, fluid leakage, operating efficiency reduction.This hydraulic pressure
Operating physical force needed for system is big, then there is the problem of driver's high labor intensive.The ceding of Taiwan in this hydraulic system, steering,
Dial and be only capable of in standing grain and unloading action successively carrying out, and then affect the operating efficiency of whole harvester；In other words, above-mentioned using having
The harvester harvesting grain of hydraulic system has the low problem of harvesting efficiency.This hydraulic system be defeated by the oil pressure of grain barrel-removing with
Working time increases and reduces, and then leads to grain barrel-removing can often fall down, and there is certain potential safety hazard.
Content of the invention
The purpose of the present invention is to there are the problems referred to above for existing technology it is proposed that a kind of harvester banked direction control valves, this receipts
Cutting mill banked direction control valves technical problem to be solved is how to improve the operating efficiency of harvester.
The purpose of the present invention can be realized by following technical proposal: a kind of harvester banked direction control valves, including switching valve block, dials
Standing grain valve block and unloading valve block；It is characterized in that, this banked direction control valves also includes the first inlet valve block with the first oil suction chamber and has
The oil return valve block of oil back chamber；Switching valve block has steering valve core, turns to main oil gallery and turn to oil inlet passage；Dial standing grain valve block have dial
Standing grain valve element, group standing grain main oil gallery and group standing grain oil inlet passage；Unloading valve block has unloading valve element, unloading main oil gallery and unloading oil-feed and leads to
Road；By turning to main oil gallery between first oil suction chamber and oil back chamber, group standing grain main oil gallery is connected with unloading main oil gallery；Turn to oil-feed
Passage, group standing grain oil inlet passage are all connected with the first oil suction chamber with unloading oil inlet passage.
By analytical structure, the working oil path of switching valve block, group standing grain valve block and unloading valve block is parallel-connection structure；Change speech
It, can enable to turn to, dial standing grain and unload simultaneously to turning to oil inlet passage, dialling standing grain oil inlet passage and unloading oil inlet passage fuel feeding
Grain action is carried out simultaneously.Specifically, when steering valve core, group standing grain valve element and unloading valve element do not carry out action, fluid leads to successively
Cross above-mentioned main oil gallery and enter oil back chamber.When steering valve core, any one valve element dialled in standing grain valve element and unloading valve element enter action
Make all to cut off accordingly main oil gallery, so that whole fluid is all entered in the oil inlet passage of required fluid；Ensure to complete corresponding earthquake
Make required oil mass.
Due to switching valve block, dial between standing grain valve block and three pieces of valve blocks of unloading valve block as parallel-connection structure；Therefore above-mentioned three pieces of valves
The position that block is located between the first inlet valve block and oil return valve block can arbitrarily be exchanged.
In above-mentioned harvester banked direction control valves, the oil inlet passage between adjacent valve block is connected, with the first inlet valve block phase
Oil inlet passage against valve block is connected with the first oil suction chamber.This structure simplifies the structure of oil circuit in parallel effectively, makes every piece
Valve block structure is simpler, manufactures more convenient.
In above-mentioned harvester banked direction control valves, described unloading valve block includes unloading valve body, unloading main oil gallery and unloading oil-feed
Passage is opened in unloading valve body；Unloading valve element penetrates in unloading valve body；It is further opened with rod chamber work in described unloading valve body
Oil duct and rodless cavity work oil duct；It is provided with the bidirectional hydraulic lock construction preventing fluid backflow in described unloading valve body.Bidirectional hydraulic
Lock construction avoids not carrying out in fluid backflow rod chamber work oil duct and rodless cavity work oil duct during respective action, that is, realizing pressurize
Locking function, it is to avoid the oil pressure being defeated by grain barrel-removing increases with the working time and reduces, and prevents potential safety hazard.
In above-mentioned harvester banked direction control valves, described bidirectional hydraulic lock construction include slide bar chamber in unloading valve body and
It is arranged on the slide bar in slide bar chamber, the one end in slide bar chamber is connected with rod chamber work oil duct, the other end in slide bar chamber and no bar
Chamber work oil duct is connected；All it is in series with check valve in rod chamber work oil duct and rodless cavity work oil duct.
In above-mentioned harvester banked direction control valves, described first inlet valve block includes the first oil-feed valve body, described first oil-feed
Chamber is located in the first inlet valve body, is further opened with the first drainback passage, described first oil-feed valve body in described first inlet valve body
It is provided with the first relief valve.When the oil pressure in the first oil suction chamber is more than the oil pressure that the first relief valve sets, the first relief valve is beaten
Open, the fluid in the first oil suction chamber is directly entered in the first drainback passage, realizes pressure release, and then ensure that each valve block is normally transported
OK.
In above-mentioned harvester banked direction control valves, this banked direction control valves also includes ceding of Taiwan valve block, and ceding of Taiwan valve block has ceding of Taiwan valve element, cuts
Platform main oil gallery and ceding of Taiwan oil inlet passage, ceding of Taiwan main oil gallery is all connected with the first oil suction chamber with ceding of Taiwan oil inlet passage；Turn to main oil
Road is connected by ceding of Taiwan main oil gallery with the first oil suction chamber；Turn to oil inlet passage, dial standing grain oil inlet passage and unloading oil inlet passage with
It is connected by ceding of Taiwan main oil gallery between first oil suction chamber；Have in described ceding of Taiwan valve block and oil mass preferentially can be supplied ceding of Taiwan oil-feed
The oil mass distribution structure of passage.Oil mass distribution structure is reasonably distributed to oil mass, that is, when ceding of Taiwan valve block action, big gauging
Liquid is used for completing ceding of Taiwan action, fraction fluid enter switching valve block turn to main oil gallery, dial standing grain valve block dial standing grain main oil gallery and
The unloading main oil gallery of unloading valve block is it is ensured that go to action, group standing grain action or unloading action can be carried out with ceding of Taiwan action simultaneously.
In above-mentioned harvester banked direction control valves, ceding of Taiwan main oil gallery includes three logical oil pockets, and three logical oil pockets are with respect to the ceding of Taiwan
The axis of valve element passes through and is followed successively by logical oil pocket one, logical oil pocket two, logical oil pocket three；Logical oil pocket one and logical oil pocket three are equal
It is connected with the first oil suction chamber of the first inlet valve block；Turn to main oil gallery, steering oil inlet passage, group standing grain oil inlet passage and unloading to enter
Oily passage is all connected with logical oil pocket two；Oil mass distribution structure is included on ceding of Taiwan valve element and when ceding of Taiwan valve element is located at left position
So that logical oil pocket one is connected with logical oil pocket two and so that logical oil pocket three is connected with logical oil pocket two
Throttle orifice.
In above-mentioned harvester banked direction control valves, this banked direction control valves also includes the second inlet valve block with the second oil suction chamber, turns
It is connected by the second oil suction chamber and ceding of Taiwan main oil gallery to main oil gallery with the first oil suction chamber；Turn to oil inlet passage, group standing grain oil-feed is led to
It is connected by the second oil suction chamber and ceding of Taiwan main oil gallery between road and unloading oil inlet passage and the first oil suction chamber.This structure is effectively
Improve group standing grain main oil gallery and the unloading valve block that turn to main oil gallery, group standing grain valve block entering switching valve block when ceding of Taiwan valve block action
Unloading main oil gallery in oil mass, and then can guarantee that go to action, dial standing grain action and unloading action can enter with ceding of Taiwan action simultaneously
OK.
In above-mentioned harvester banked direction control valves, described second inlet valve block includes the second oil-feed valve body, described second oil-feed
Chamber is located in the second inlet valve body, is further opened with the second drainback passage, described second oil-feed valve body in described second inlet valve body
It is provided with the second relief valve.Second relief valve is mainly used in ensureing the normal operation of switching valve block, group standing grain valve block and unloading valve block,
Avoid oil pressure too high and injure above-mentioned valve block and connected executive component.When the oil pressure in the second oil suction chamber is more than the second relief valve
During the oil pressure setting, the second relief valve is opened, and the fluid in the second oil suction chamber is directly entered in the second drainback passage, realizes avoiding
Second oil suction chamber oil pressure is too high.
Compared with prior art, book harvester banked direction control valves is made up of polylith valve block, need not be by pipe between adjacent valve block
Road is connected, and thus has the advantages that structure is simple and compact.Ceding of Taiwan valve block in this harvester banked direction control valves, dial standing grain valve block, turn
All it is arranged in parallel to valve block and unloading valve block, eliminates the potential safety hazard of pressure piling, prevent booster, fluid leakage and operating efficiency
Low problem.
This harvester banked direction control valves only need to arrange safety valve in inlet valve block, and in other words, safety valve is integrated in the first oil-feed
In valve block and the second inlet valve block, in assembling harvester, the space installing safety valve need not be reserved, thus effectively save and receive
The impact to productive temp of the space of cutting mill and elimination.
This harvester banked direction control valves can make to dial standing grain, steering and unloading action linkage；According to circumstances also enable the ceding of Taiwan and dial standing grain
Action links；Thus effectively improve the operating efficiency of harvester.
This harvester banked direction control valves arranges check valve in ceding of Taiwan valve block, effectively prevents the problem that the ceding of Taiwan drops naturally.
This harvester banked direction control valves is arranged on the dirty of ceding of Taiwan valve block by dialling standing grain valve block, more meets the operating habit of driver,
Convenient manipulation；It is more conducive to distribution oil mass simultaneously and manufacture and design oil mass distribution structure.
Brief description
Fig. 1 is the hydraulic schematic diagram of this harvester banked direction control valves embodiment one.
Fig. 2 is the perspective view of this harvester banked direction control valves embodiment one.
Fig. 3 is the main structure diagram of this harvester banked direction control valves embodiment one.
Fig. 4 is the cross section structure diagram of a-a in Fig. 3.
Fig. 5 is the cross section structure diagram of b-b in Fig. 4.
Fig. 6 is the cross section structure diagram of unloading valve block in this harvester banked direction control valves.
Fig. 7 is the cross section structure diagram of the first inlet valve block in this harvester banked direction control valves.
Fig. 8 is the hydraulic schematic diagram of this harvester banked direction control valves embodiment two.
Fig. 9 is the perspective view of this harvester banked direction control valves embodiment two.
Figure 10 is the main structure diagram of this harvester banked direction control valves embodiment two.
Figure 11 is the cross section structure diagram of c-c in Figure 10.
Figure 12 is the cross section structure diagram of d-d in Figure 11.
Figure 13 is existing grain harvester banked direction control valves hydraulic schematic diagram.
In figure, the 1, first inlet valve block；1a, the first oil-feed valve body；1b, the first oil suction chamber；1c, the first drainback passage；1d、
First oil-feed adapter connecting hole；1e, oil return adapter connecting hole；1f, the first relief valve；2nd, ceding of Taiwan valve block；2a, ceding of Taiwan valve body；2b、
Ceding of Taiwan valve element；2c, ceding of Taiwan main oil gallery；2d, ceding of Taiwan oil inlet passage；2e, ceding of Taiwan drainback passage；2f, throttle orifice；3rd, the second inlet valve
Block；3a, the second oil-feed valve body；3b, the second oil suction chamber；3c, the second drainback passage；3d, the second relief valve；4th, switching valve block；4a、
Turn to valve body；4b, steering valve core；4c, steering main oil gallery；4d, steering oil inlet passage；4e, steering drainback passage；5th, dial standing grain valve
Block；5a, group standing grain valve body；5b, group standing grain valve element；5c, group standing grain main oil gallery；5d, group standing grain oil inlet passage；5e, group standing grain drainback passage；6th, unload
Grain valve block；6a, unloading valve body；6b, unloading valve element；6c, unloading main oil gallery；6d, unloading oil inlet passage；6e, unloading drainback passage；
6f, rod chamber work oil duct；6g, rodless cavity work oil duct；6h, slide bar；6i, slide bar chamber；6j, check valve；7th, oil return valve block；
7a, oil back chamber；8th, bolt and nut；9th, plug.
Specific embodiment
The following is the specific embodiment of the present invention and combine accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment one
As shown in Figures 1 to 5, this harvester banked direction control valves includes the first inlet valve block 1, switching valve block 4, dials standing grain valve block 5, unloads
Grain valve block 6 and oil return valve block 7.Above-mentioned four pieces of valve blocks are pressed the first inlet valve block 1, switching valve block 4 successively, are dialled standing grain valve block 5, unloading valve
Block 6 and oil return valve block 7 are folded and are set, and are fixedly connected by bolt and nut 8.According to actual conditions, switching valve block 4, group standing grain valve block 5 and
The position of unloading valve block 6 can mutually be exchanged.
As shown in Figure 4 and Figure 5, oil return valve block 7 has oil back chamber 7a.
As shown in Fig. 4, Fig. 5 and Fig. 7, the first inlet valve block 1 includes the first oil-feed valve body 1a, opens in the first oil-feed valve body 1a
It is provided with the first oil suction chamber 1b and the first drainback passage 1c, the first oil-feed valve body 1a is had being connected with the first oil suction chamber 1b
The one oil-feed adapter connecting hole 1d and oil return adapter connecting hole 1e being connected with the first drainback passage 1c.On first oil-feed valve body 1a
Have first relief hole of connection the first oil suction chamber 1b and the first drainback passage 1c, the first oil-feed valve body 1a is provided with the first pressure release
The valve element of valve 1f, the first relief valve 1f is located at the first relief hole.When the oil pressure in the first oil suction chamber 1b is more than the first relief valve
During the oil pressure that 1f sets, fluid promotes the valve core movement of the first relief valve 1f, and the fluid in the first oil suction chamber 1b is let out by first
Pressure hole is discharged from the first drainback passage 1c, realizes pressure release it is ensured that maximum oil pressure value in banked direction control valves.When in the first oil suction chamber 1b
When oil pressure is less than the oil pressure that the first relief valve 1f sets, the valve element of the first relief valve 1f is reset to the under the elastic force effect of spring
At one relief hole, the first relief hole is blocked.
Switching valve block 4 includes turning to valve body 4a and steering valve core 4b, and steering valve core 4b penetrates in steering valve body 4a, switching valve
Have in body 4a and be provided with steering main oil gallery 4c, turn to oil inlet passage 4d and turn to drainback passage 4e.Turn to main oil gallery 4c and steering
Oil inlet passage 4d is all connected with the first oil suction chamber 1b of the first inlet valve block 1.Turn to drainback passage 4e and the first drainback passage
1c is connected.When steering valve core 4b is in left position or right position state, steering valve core 4b makes steering main oil gallery 4c be in cut-off shape
State.When steering valve core 4b is in middle position state, turns to main oil gallery 4c and be in connected state.
Dial standing grain valve block 5 to include dialling standing grain valve body 5a and dial standing grain valve element 5b, group standing grain valve element 5b penetrates and dials in standing grain valve body 5a, dials standing grain valve
Have in body 5a to be provided with and dial standing grain main oil gallery 5c, dial standing grain oil inlet passage 5d and dial standing grain drainback passage 5e.Dial standing grain main oil gallery 5c and steering
Main oil gallery 4c is connected, and dials standing grain oil inlet passage 5d and is connected with turning to oil inlet passage 4d.Turn to drainback passage 4e and dial standing grain oil return
Passage 5e is connected.When dial standing grain valve element 5b be in left position or right position state when, dial standing grain valve element 5b make dial standing grain main oil gallery 5c be in cut
Only state.When group standing grain valve element 5b is in middle position state, dials standing grain main oil gallery 5c and be in connected state.
Unloading valve block 6 includes unloading valve body 6a and unloading valve element 6b, and unloading valve element 6b penetrates in unloading valve body 6a, unloading valve
Have in body 6a and be provided with unloading main oil gallery 6c, unloading oil inlet passage 6d and unloading drainback passage 6e.Unloading main oil gallery 6c connection is dialled
The standing grain main oil gallery 5c and oil back chamber 7a of oil return valve block 7；Unloading oil inlet passage 6d is connected with dialling standing grain oil inlet passage 5d；Unloading oil return
The oil back chamber 7a of standing grain drainback passage 5e and oil return valve block 7 is dialled in passage 6e connection.When unloading valve element 6b is in left position or right position state
When, unloading valve element 6b makes unloading main oil gallery 6c be in cut-off state.When unloading valve element 6b is in middle position state, unloading main oil gallery
6c is in connected state.
In sum, the first oil suction chamber 1b of the first inlet valve block 1 and oil back chamber 7a of oil return valve block 7 passes sequentially through steering
Main oil gallery 4c, group standing grain main oil gallery 5c are connected with unloading main oil gallery 6c.First drainback passage 1c of the first inlet valve block 1 and oil return
The oil back chamber 7a of valve block 7 passes sequentially through steering drainback passage 4e, group standing grain drainback passage 5e is connected with unloading drainback passage 6e.Turn
Directly it is connected with the first oil suction chamber 1b of the first inlet valve block 1 to oil inlet passage 4d.Dial standing grain oil inlet passage 5d pass through turn to into
Oily passage 4d is connected with the first oil suction chamber 1b of the first inlet valve block 1.Unloading oil inlet passage 6d passes sequentially through group standing grain oil-feed and leads to
Road 5d is connected with the first oil suction chamber 1b of the first inlet valve block 1 with turning to oil inlet passage 4d.
Above-mentioned switching valve block 4, dial standing grain valve block 5 and the valve element of unloading valve block 6 be in control when left position or right position state corresponding
The concrete structure that main oil gallery is in cut-off state is identical.Specifically, main oil gallery includes three logical oil pockets, and three logical oil pockets are relatively
Axis in valve element passes through and is followed successively by logical oil pocket four, logical oil pocket five, logical oil pocket six；Logical oil pocket four and logical oil pocket six
All it is connected with the passage of a upper valve block, logical oil pocket five is connected with the passage of next valve block.Have on valve element and be in when valve element
Connect the 3rd annular groove of logical oil pocket four and logical oil pocket five during middle position and connect the fourth annular leading to oil pocket six and logical oil pocket five
Groove.
As shown in Figure 4 and Figure 6, it is further opened with rod chamber work oil duct 6f and rodless cavity work oil duct in unloading valve body 6a
6g；It is provided with the bidirectional hydraulic lock construction preventing fluid backflow in unloading valve body 6a.Bidirectional hydraulic lock construction is included positioned at unloading valve
Slide bar chamber 6i in the body 6a and slide bar 6h being arranged in slide bar 6h chamber, one end of slide bar chamber 6i and rod chamber work oil duct 6f phase
Connection, the other end of slide bar chamber 6i is connected with rodless cavity work oil duct 6g；Rod chamber work oil duct 6f and rodless cavity working oil
All it is in series with check valve 6j in road 6g.When unloading valve element 6b is in middle position, valve element makes rod chamber work oil duct 6f and rodless cavity
Work oil duct 6g is all in cut-off state with unloading oil inlet passage 6d.When unloading valve element 6b is in left position, unloading oil inlet passage
6d is connected with rod chamber work oil duct 6f, and unloading oil inlet passage 6d is in cut-off state with rodless cavity work oil duct 6g, but no
Rod cavity work oil duct 6g is connected with unloading drainback passage 6e, and fluid enters rod chamber and works oil duct 6f, and backs down and be connected on
The valve element of check valve 6j on rod cavity work oil duct 6f, and then to the executive component within the chamber being connected with rod chamber work oil duct 6f
Fuel feeding.Meanwhile, slide bar 6h, under fluid oil differential pressure action, backs down the valve being connected on check valve 6j on rodless cavity work oil duct 6g
Core, and then the fluid of the executive component within the chamber being connected with rodless cavity work oil duct 6g passes through check valve 6j and rodless cavity work
Oil duct 6g is back to unloading drainback passage 6e.When unloading valve element 6b is in right position, unloading oil inlet passage 6d is worked with rodless cavity
Oil duct 6g is connected, and unloading oil inlet passage 6d is in cut-off state with rod chamber work oil duct 6f, but rod chamber work oil duct 6f
Be connected with unloading drainback passage 6e, fluid enter rodless cavity work oil duct 6g, and back down be connected on rodless cavity work oil duct 6g
The valve element of upper check valve 6j, and then to the executive component within the chamber fuel feeding being connected with rodless cavity work oil duct 6g.Meanwhile, slide bar
6h, under fluid oil differential pressure action, backs down the valve element being connected on check valve 6j on rod chamber work oil duct 6f, and then and rod chamber
The fluid of the executive component within the chamber that work oil duct 6f is connected is back to and is unloaded by check valve 6j and rod chamber work oil duct 6f
Grain drainback passage 6e.
Embodiment two
The present embodiment is essentially identical with the structure of embodiment one and principle, and different place is: as Fig. 8 to 12 institute
Show, this harvester banked direction control valves also includes ceding of Taiwan valve block 2 and the second inlet valve block 3.Above-mentioned 7 pieces of valve blocks press the first inlet valve block successively
1st, ceding of Taiwan valve block 2, the second inlet valve block 3, switching valve block 4, group standing grain valve block 5, unloading valve block 6 and oil return valve block 7 are folded and are set, and pass through
Bolt and nut 8 is fixedly connected.
Ceding of Taiwan valve block 2 includes ceding of Taiwan valve body 2a and ceding of Taiwan valve element 2b, and ceding of Taiwan valve element 2b penetrates in ceding of Taiwan valve body 2a, ceding of Taiwan valve
Have in body 2a and be provided with ceding of Taiwan main oil gallery 2c, ceding of Taiwan oil inlet passage 2d and ceding of Taiwan drainback passage 2e.Ceding of Taiwan main oil gallery 2c and the ceding of Taiwan
Oil inlet passage 2d is all connected with the first oil suction chamber 1b of the first inlet valve block 1；Ceding of Taiwan drainback passage 2e and the first drainback passage
1c is connected.There is in ceding of Taiwan valve block 2 the oil mass distribution structure that oil mass can preferentially supply ceding of Taiwan oil inlet passage 2d.When ceding of Taiwan valve
When core 2b is in middle position state, ceding of Taiwan main oil gallery 2c is in all-pass state.When ceding of Taiwan valve element 2b is in left position or right position state,
Oil mass distribution structure makes ceding of Taiwan main oil gallery 2c be in low discharge circulation status.
Oil mass distribution structure is specifically: ceding of Taiwan main oil gallery 2c includes three logical oil pockets, and three logical oil pockets are with respect to cutting
The axis of deck valve core 2b passes through and is followed successively by logical oil pocket one, logical oil pocket two, logical oil pocket three.Logical oil pocket one and logical oil pocket
Three are all connected with the first oil suction chamber 1b of the first inlet valve block 1；Have on ceding of Taiwan valve element 2b and be located at left position as ceding of Taiwan valve element 2b
When so that logical oil pocket one is connected with logical oil pocket two and so that logical oil pocket three is connected with logical oil pocket two
Logical throttle orifice 2f.More particularly, valve element has and connect the of logical oil pocket one and logical oil pocket two when valve element is in middle position
One annular groove and the second annular groove connecting logical oil pocket three and logical oil pocket two, throttle orifice 2f be opened in oblique on valve element
Hole, throttle orifice 2f connects an annular groove and the second annular groove.
Second inlet valve block 3 is similar with the structure of the first inlet valve block 1.Second inlet valve block 3 includes the second inlet valve
Body 3a, offers the second oil suction chamber 3b and the second drainback passage 3c in the second oil-feed valve body 3a.Have on second oil-feed valve body 3a
The second oil-feed adapter connecting hole being connected with the second oil suction chamber 3b.Connection the second oil suction chamber 3b is had on the second oil-feed valve body 3a
With second relief hole of the second drainback passage 3c, the second oil-feed valve body 3a is provided with the second relief valve 3d, the second relief valve 3d's
Valve element is located at the second relief hole.When the oil pressure in the second oil suction chamber 3b is more than the oil pressure that the second relief valve 3d sets, fluid
Promote the valve core movement of the second relief valve 3d, the fluid in the second oil suction chamber 3b passes through the second relief hole from the second drainback passage 3c
Discharge, realize pressure release it is ensured that maximum oil pressure value in banked direction control valves.When the oil pressure in the second oil suction chamber 3b is less than the second relief valve 3d
During the oil pressure setting, the valve element of the second relief valve 3d is reset at the second relief hole under the elastic force effect of spring, and second is let out
The closure of pressure hole.Choose whether to assist oil-feed using the second inlet valve block 3 according to actual conditions；Assisted using the second inlet valve block 3
Oil-feed, then be connected the second oil-feed adapter connecting hole with oil-feed adapter；Oil-feed need not be assisted using the second inlet valve block 3, then
Using plug 9, second oil-feed adapter connecting hole is blocked.
Second oil suction chamber 3b connects the logical oil pocket two of ceding of Taiwan valve block 2 and the logical oil pocket four of switching valve block 4 and logical oil pocket six.The
The two drainback passage 3c connection ceding of Taiwan drainback passage 2e of the ceding of Taiwan valve block 2 and steering drainback passage 4e of switching valve block 4.Switching valve block
4 steering oil inlet passage 4d is connected with the second oil suction chamber 3b.
In sum, the first oil suction chamber 1b of the first inlet valve block 1 and oil back chamber 7a of oil return valve block 7 passes sequentially through the ceding of Taiwan
Main oil gallery 2c, the second oil suction chamber 3b, steering main oil gallery 4c, group standing grain main oil gallery 5c are connected with unloading main oil gallery 6c.First oil-feed
First drainback passage 1c of the valve block 1 and oil back chamber 7a of oil return valve block 7 passes sequentially through ceding of Taiwan drainback passage 2e, the second drainback passage
3c, steering drainback passage 4e, group standing grain drainback passage 5e are connected with unloading drainback passage 6e.Turn to oil inlet passage 4d to pass sequentially through
Second oil suction chamber 3b is connected with the first oil suction chamber 1b of the first inlet valve block 1 with ceding of Taiwan main oil gallery 2c.Dial standing grain oil inlet passage 5d
Pass sequentially through the first oil suction chamber turning to oil inlet passage 4d, the second oil suction chamber 3b and ceding of Taiwan main oil gallery 2c and the first inlet valve block 1
1b is connected.Unloading oil inlet passage 6d passes sequentially through and dials standing grain oil inlet passage 5d, turns to oil inlet passage 4d, the second oil suction chamber 3b and cut
Platform main oil gallery 2c is connected with the first oil suction chamber 1b of the first inlet valve block 1.
Claims (9)
1. a kind of harvester banked direction control valves, including switching valve block (4), dials standing grain valve block (5) and unloading valve block (6)；It is characterized in that, this
Banked direction control valves also includes the first inlet valve block (1) with the first oil suction chamber (1b) and the oil return valve block (7) with oil back chamber (7a)；
Switching valve block (4) has steering valve core (4b), turns to main oil gallery (4c) and turn to oil inlet passage (4d)；Dial standing grain valve block (5) to have
Dial standing grain valve element (5b), dial standing grain main oil gallery (5c) and dial standing grain oil inlet passage (5d)；Unloading valve block (6) has unloading valve element (6b), unloads
Grain main oil gallery (6c) and unloading oil inlet passage (6d)；Pass through between first oil suction chamber (1b) and oil back chamber (7a) to turn to main oil gallery
(4c), dial standing grain main oil gallery (5c) to be connected with unloading main oil gallery (6c)；Turn to oil inlet passage (4d), dial standing grain oil inlet passage (5d) and
Unloading oil inlet passage (6d) is all connected with the first oil suction chamber (1b), and this harvester banked direction control valves also includes ceding of Taiwan valve block (2), the ceding of Taiwan
Valve block (2) has ceding of Taiwan valve element (2b), ceding of Taiwan main oil gallery (2c) and ceding of Taiwan oil inlet passage (2d), ceding of Taiwan main oil gallery (2c) and the ceding of Taiwan
Oil inlet passage (2d) is all connected with the first oil suction chamber (1b)；Turn to main oil gallery (4c) and pass through ceding of Taiwan master with the first oil suction chamber (1b)
Oil duct (2c) is connected；Turn to oil inlet passage (4d), dial standing grain oil inlet passage (5d) and unloading oil inlet passage (6d) and the first oil-feed
It is connected by ceding of Taiwan main oil gallery (2c) between chamber (1b)；Have in described ceding of Taiwan valve block (2) and oil mass preferentially can be supplied the ceding of Taiwan
The oil mass distribution structure of oil inlet passage (2d).
2. harvester banked direction control valves according to claim 1 it is characterised in that described switching valve block (4), dial standing grain valve block (5)
Position can arbitrarily be exchanged and (6) three pieces of valve blocks of unloading valve block between.
3. harvester banked direction control valves according to claim 2 is it is characterised in that switching valve block (4), dial standing grain valve block (5) and unloading
In (6) three pieces of valve blocks of grain valve block, the oil inlet passage between adjacent valve block is connected, and leans valve block with the first inlet valve block (1)
Oil inlet passage is connected with the first oil suction chamber (1b).
4. the harvester banked direction control valves according to claim 1 or 2 or 3 is it is characterised in that described unloading valve block (6) includes unloading
Grain valve body (6a), unloading main oil gallery (6c) and unloading oil inlet passage (6d) are opened in unloading valve body (6a)；Unloading valve element (6b)
Penetrate in unloading valve body (6a)；It is further opened with rod chamber work oil duct (6f) and rodless cavity work in described unloading valve body (6a)
Oil duct (6g)；It is provided with the bidirectional hydraulic lock construction preventing fluid backflow in described unloading valve body (6a).
5. harvester banked direction control valves according to claim 4 it is characterised in that described bidirectional hydraulic lock construction include be located at unload
Slide bar chamber (6i) in grain valve body (6a) and the slide bar (6h) being arranged in slide bar (6h) chamber, the one end of slide bar chamber (6i) with have bar
Chamber work oil duct (6f) is connected, and the other end of slide bar chamber (6i) is connected with rodless cavity work oil duct (6g)；Rod chamber works
All it is in series with check valve (6j) in oil duct (6f) and rodless cavity work oil duct (6g).
6. the harvester banked direction control valves according to claim 1 or 2 or 3 is it is characterised in that described first inlet valve block (1) wraps
Include the first oil-feed valve body (1a), described first oil suction chamber (1b) is located in the first oil-feed valve body (1a), described first oil-feed valve body
(1a) it is further opened with the first drainback passage (1c) in, described first oil-feed valve body (1a) is provided with the first relief valve (1f).
7. the harvester banked direction control valves according to claim 1 or 2 or 3 is it is characterised in that described ceding of Taiwan main oil gallery (2c) includes
Three logical oil pockets, three logical oil pockets pass through with respect to the axis of ceding of Taiwan valve element (2b) and are followed successively by logical oil pocket one, lead to
Oil pocket two, logical oil pocket three；Logical oil pocket one is all connected with first oil suction chamber (1b) of the first inlet valve block (1) with logical oil pocket three；
Turn to main oil gallery (4c), turn to oil inlet passage (4d), dial standing grain oil inlet passage (5d) and unloading oil inlet passage (6d) all with logical oil pocket
Two are connected；Oil mass distribution structure includes making logical oil pocket above and when ceding of Taiwan valve element (2b) is located at left position positioned at ceding of Taiwan valve element (2b)
One is connected with logical oil pocket two and makes when ceding of Taiwan valve element (2b) is located at right position to lead to the throttling that oil pocket three is connected with logical oil pocket two
Hole (2f).
8. the harvester banked direction control valves according to claim 1 or 2 or 3 is it is characterised in that this harvester banked direction control valves also includes tool
There is the second inlet valve block (3) of the second oil suction chamber (3b), turn to main oil gallery (4c) and pass through the second oil-feed with the first oil suction chamber (1b)
Chamber (3b) is connected with ceding of Taiwan main oil gallery (2c)；Turn to oil inlet passage (4d), dial standing grain oil inlet passage (5d) and unloading oil inlet passage
(6d) pass through the second oil suction chamber (3b) between the first oil suction chamber (1b) and ceding of Taiwan main oil gallery (2c) is connected.
9. harvester banked direction control valves according to claim 8 is it is characterised in that described second inlet valve block (3) includes second
Oil-feed valve body (3a), described second oil suction chamber (3b) is located in the second oil-feed valve body (3a), in described second oil-feed valve body (3a)
It is further opened with the second drainback passage (3c), described second oil-feed valve body (3a) is provided with the second relief valve (3d).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035276.3A CN103742682B (en) | 2014-01-24 | 2014-01-24 | Multiway valve for harvesters |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035276.3A CN103742682B (en) | 2014-01-24 | 2014-01-24 | Multiway valve for harvesters |
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| Publication Number | Publication Date |
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| CN103742682A CN103742682A (en) | 2014-04-23 |
| CN103742682B true CN103742682B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410035276.3A Active CN103742682B (en) | 2014-01-24 | 2014-01-24 | Multiway valve for harvesters |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454722B (en) * | 2014-10-29 | 2017-06-16 | 浙江阿凡特精密设备制造有限公司 | A kind of hydraulic multitandem valve |
| CN107218413A (en) * | 2017-07-05 | 2017-09-29 | 圣邦集团有限公司 | A kind of banked direction control valves with hydraulic pressure lock function |
| CN107420367B (en) * | 2017-09-26 | 2023-06-30 | 浙江海宏液压科技股份有限公司 | Manual control valve of harvester |
| IT201800003266A1 (en) * | 2018-03-05 | 2019-09-05 | Oilcomp S R L | FLUID DYNAMIC DISTRIBUTOR |
Citations (3)
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|---|---|---|---|---|
| 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 |
| CN201763716U (en) * | 2010-09-16 | 2011-03-16 | 泸州众大科技液压件有限公司 | Economical and high-efficient multitandem valve |
| CN202531519U (en) * | 2012-05-13 | 2012-11-14 | 合肥长源液压股份有限公司 | Electro-hydraulic multi-way directional valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201426258Y (en) * | 2009-05-14 | 2010-03-24 | 湖州鑫科锻压机床有限公司 | Steering and header lifting control valve of combine harvester |
| CN201610873U (en) * | 2010-02-05 | 2010-10-20 | 泸州江阳长江液压科技有限公司 | Multifunctional highly-integrated multi-way valve |
| CN202811605U (en) * | 2012-09-29 | 2013-03-20 | 宦志平 | Manual integral reversing valve of harvester |
| CN203239667U (en) * | 2013-04-25 | 2013-10-16 | 宦治平 | Harvester overall multi-reversing valve |
| CN203757077U (en) * | 2014-01-24 | 2014-08-06 | 浙江海宏液压科技股份有限公司 | Harvester multi-way valve |
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2014
- 2014-01-24 CN CN201410035276.3A patent/CN103742682B/en active Active
Patent Citations (3)
| 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 |
| CN201763716U (en) * | 2010-09-16 | 2011-03-16 | 泸州众大科技液压件有限公司 | Economical and high-efficient multitandem valve |
| CN202531519U (en) * | 2012-05-13 | 2012-11-14 | 合肥长源液压股份有限公司 | Electro-hydraulic multi-way directional valve |
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