CN105937511A - Hydraulic system assembly and tractor - Google Patents
Hydraulic system assembly and tractor Download PDFInfo
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- CN105937511A CN105937511A CN201610461016.1A CN201610461016A CN105937511A CN 105937511 A CN105937511 A CN 105937511A CN 201610461016 A CN201610461016 A CN 201610461016A CN 105937511 A CN105937511 A CN 105937511A
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- Prior art keywords
- hydraulic
- oil
- fluid pressure
- conduit under
- under fluid
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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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention relates to the field of hydraulic pressure, and discloses a hydraulic system assembly and a tractor. The hydraulic system assembly comprises an oil tank (1), a dual-gear pump (2), a hydraulic steering assembly (3), a hydraulic multi-way valve (4) and hydraulic pipelines (5), wherein the oil tank (1) is connected with the dual-gear pump (2) through the hydraulic pipelines (5); the dual-gear pump (2) is connected with the hydraulic steering assembly (3) through the hydraulic pipelines (5); the hydraulic steering assembly (3) is connected with the oil tank (1) through the hydraulic pipelines (5) to form a hydraulic steering loop; the dual-gear pump (2) is further connected with the hydraulic multi-way valve (4) through the hydraulic pipelines (5); and the hydraulic multi-way valve (4) is connected with the oil tank (1) through the hydraulic pipelines (5) to form a hydraulic output loop. According to the hydraulic system assembly, the purposes that the hydraulic system assembly is simplified and the design cost is reduced can be achieved, and the stable and reliable operation of the tractor is guaranteed.
Description
Technical field
The present invention relates to a kind of hydraulic system, in particular it relates to a kind of hydraulic system assembly and tractor.
Background technology
China's tractor range of application gradually expands now, and the development need tractor of modern agriculture engineering is many
Functionalization, economic performance are more excellent.Wherein, often filled by hydraulic pressure output at middle-size and small-size tractor rear
Put connection lifting rear-hitch tool, tipping trailer, hydraulic pressure reversion plough etc..
Most of middle-size and small-size tractor, use independent hydraulically controlled steering and independent hydraulically controlled output system
System, steering and hydraulic output device are attached by the management of independent gear pump, hydraulic oil container and hydraulic pressure respectively
Part forms.Some mini power tractor uses hydraulic steering system and liquid pressure output system to share a liquid
With parallel connection type Characteristic of Priority Valve, potential source, ensures that steering is safe and reliable.But relatively high power
Type tractor uses this when arranging, hydraulic power source provides flow not for double piston-rod double-acting type hydraulic cylinder
Foot, hydraulic steering system functional reliability reduces.Only with liquid pressure output system according to hydraulic steering system
The Hydraulic Elements such as vertical work carries out complete machine layout, both fluid pressure lines need to separately design, and tractor starts
The covered structure such as machine and driver's cabin is compact, and limitations is relatively big, assembling hydraulic oil container and pipeline inconvenience,
Complete machine is arranged unsightly.
Therefore, the most important thing that the design of tractor hydraulic system assembly is tractor development is improved, it is necessary to right
Hydraulic system assembly improves, the work reliable and stable to ensure tractor.
Summary of the invention
It is an object of the invention to provide a kind of hydraulic system assembly and tractor, this hydraulic system assembly can
Reach simplify hydraulic system assembly and reduce the purpose of design cost, it is ensured that the work that tractor is reliable and stable
Make.
To achieve these goals, according to an aspect of the present invention, it is provided that a kind of hydraulic system assembly, institute
State hydraulic system assembly and include fuel tank, duplex gear pump, fluid-link steering assembly, hydraulic multitandem valve and liquid
Pressure pipeline, wherein, described fuel tank is connected with described duplex gear pump by described conduit under fluid pressure, described double
Connection gear pump is connected with described fluid-link steering assembly by described conduit under fluid pressure, and described fluid-link steering assembly leads to
Cross described conduit under fluid pressure to be connected with described fuel tank, to form hydraulic steering circui；Described duplex gear pump is also
Being connected with described hydraulic multitandem valve by described conduit under fluid pressure, described hydraulic multitandem valve passes through described hydraulic tube
Road is connected with described fuel tank, to form hydraulic pressure output loop.
Preferably, described duplex gear pump includes inlet port, the first oil-out and the second oil-out, described
Inlet port is positioned at the bottom of described duplex gear pump, described first oil-out and described second oil-out and is positioned at
The top of described duplex gear pump, described inlet port respectively with described first oil-out and described second fuel-displaced
Mouth connection, described first oil-out is connected with described fluid-link steering assembly by described conduit under fluid pressure, described
Second oil-out is connected with described hydraulic multitandem valve by described conduit under fluid pressure.
Preferably, described fluid-link steering assembly includes hydraulic steering gear and steering cylinder mechanism, described hydraulic pressure
Steering gear includes turning to oil-in, turn to oil return opening and two turn to actuator port, described in turn to oil-in
Be connected with described first oil-out by described conduit under fluid pressure, described in turn to oil return opening to pass through described hydraulic tube
Road is connected with described fuel tank, and described steering cylinder mechanism includes two steering hydraulic chambeies, turns to described in two
Actuator port connects two described steering hydraulic chambeies by described conduit under fluid pressure respectively.
Preferably, described hydraulic system assembly also includes that oil-suction oil filter, described oil-suction oil filter are positioned at institute
State between fuel tank and described duplex gear pump, and by described conduit under fluid pressure respectively with described fuel tank and described
Inlet port connects.
Preferably, described hydraulic multitandem valve includes banked direction control valves oil-in, banked direction control valves oil return opening and multiple many
Road valve actuator port, described banked direction control valves oil-in is by described conduit under fluid pressure with described second oil-out even
Connecing, described banked direction control valves oil return opening is connected with described fuel tank by described conduit under fluid pressure, each described banked direction control valves
Actuator port connects hydraulic quick coupler.
Preferably, described hydraulic quick coupler is connected with described banked direction control valves actuator port by described conduit under fluid pressure.
Preferably, described hydraulic system assembly also includes that half separated type lifter, described half separated type promote
Device includes that lift cylinder and allotter, described lift cylinder include that lift cylinder oil-in and lift cylinder go out
Hydraulic fluid port, described allotter includes allotter oil-in and allotter oil-out, and described hydraulic multitandem valve also wraps
Including banked direction control valves oil-out, described allotter oil-in is by described conduit under fluid pressure and described banked direction control valves oil-out
Connecting, described allotter oil-out is connected with described lift cylinder oil-in by described conduit under fluid pressure, institute
State lift cylinder oil-out to be connected with described fuel tank by described conduit under fluid pressure.
Preferably, at described lift cylinder oil-in, connection has and can removably connect with described conduit under fluid pressure
Seal nipple.
Preferably, the described conduit under fluid pressure between described lift cylinder oil-out and described fuel tank is provided with list
To choke valve.
Additionally, according to a further aspect in the invention, it is provided that a kind of tractor, described tractor includes this
The described hydraulic system assembly that invention provides.
By technique scheme, the present invention is by fuel tank, duplex gear pump, fluid-link steering assembly and company
The conduit under fluid pressure connecing each Hydraulic Elements forms a hydraulic steering circui closed；By fuel tank, duplex
Gear pump, hydraulic multitandem valve and connect each Hydraulic Elements conduit under fluid pressure form one close hydraulic pressure defeated
Go out loop.Made defeated to traditional hydraulic steering system and hydraulic pressure by the hydraulic system assembly of above-mentioned design
Going out system and be improved to a hydraulic system assembly in parallel by two independent hydraulic systems, optimization decreases
Fluid-link steering fuel tank independent in conventional hydraulic and independent gear pump, reduce design cost, with
Time simplify fluid pressure line connect, arrange the most attractive in appearance.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with
Detailed description below is used for explaining the present invention together, but is not intended that limitation of the present invention.?
In accompanying drawing:
Fig. 1 is the axonometric chart of the hydraulic system assembly according to the preferred embodiment of the present invention；
Fig. 2 is the schematic diagram of the hydraulic system assembly according to the preferred embodiment of the present invention.
Description of reference numerals
1 fuel tank 2 duplex gear pump
3 fluid-link steering assembly 4 hydraulic multitandem valves
5 conduit under fluid pressure 6 oil-suction oil filters
7 hydraulic quick coupler 8 half separated type lifters
9 one-way throttle valve 21 inlet ports
22 first oil-out 23 second oil-outs
31 hydraulic steering gear 32 steering cylinder mechanisms
311 turn to oil-in 312 to turn to oil return opening
313 turn to actuator port 321 steering hydraulic chamber
41 banked direction control valves oil-in 42 banked direction control valves oil return openings
43 banked direction control valves actuator port 44 banked direction control valves oil-outs
81 lift cylinder 82 allotters
811 lift cylinder oil-in 812 lift cylinder oil-outs
821 allotter oil-in 822 allotter oil-outs
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail.It should be appreciated that
Detailed description of the invention described herein is merely to illustrate and explains the present invention, is not limited to this
Bright.
In the present invention, in the case of illustrating on the contrary, the noun of locality of use such as " upper and lower " leads to
Be often for direction shown in the drawings for or for on vertical, vertical or gravity direction
The relationship description word of each parts mutual alignment.
See Fig. 1, Fig. 1 and show a kind of hydraulic system assembly according to the preferred embodiment of the present invention
Axonometric chart.Described hydraulic system assembly include fuel tank 1, duplex gear pump 2, fluid-link steering assembly 3,
Hydraulic multitandem valve 4 and conduit under fluid pressure 5, wherein, fuel tank 1 is by conduit under fluid pressure 5 and duplex gear pump
2 connect, and duplex gear pump 2 is connected with fluid-link steering assembly 3 by conduit under fluid pressure 5, and fluid-link steering is total
3 are become to be connected with fuel tank 1 by conduit under fluid pressure 5, to form hydraulic steering circui；Duplex gear pump 2 is also
Being connected with hydraulic multitandem valve 4 by conduit under fluid pressure 5, hydraulic multitandem valve 4 is by conduit under fluid pressure 5 and fuel tank
1 connects, to form hydraulic pressure output loop.
The present invention is by fuel tank 1, duplex gear pump 2, fluid-link steering assembly 3 and connects each hydraulic pressure unit
The conduit under fluid pressure 5 of part forms a hydraulic steering circui closed, i.e. hydraulic oil sequentially passes through from fuel tank 1
Duplex gear pump 2, fluid-link steering assembly 3, and it is back to fuel tank 1 by fluid-link steering assembly 3；By oil
Case 1, duplex gear pump 2, hydraulic multitandem valve 4 and connect the conduit under fluid pressure 5 of each Hydraulic Elements and form
One hydraulic pressure output loop closed, i.e. hydraulic oil sequentially passes through duplex gear pump 2, hydraulic pressure from fuel tank 1
Banked direction control valves 4, and it is back to fuel tank 1 by hydraulic multitandem valve 4.The hydraulic system connected by above-mentioned design
Assembly, i.e. shares a fuel tank 1 and a duplicate gear by hydraulic steering circui and hydraulic pressure output loop
Pump 2 so that traditional hydraulic steering system and liquid pressure output system are changed by two independent hydraulic systems
Entering is a hydraulic system assembly in parallel, optimizes and decreases fluid-link steering independent in conventional hydraulic
Fuel tank and independent gear pump, reduce design cost, simplifies fluid pressure line simultaneously and connects, arranges letter
Single attractive in appearance.
At this it should be strongly noted that hydraulic tube can not also be used between each above-mentioned Hydraulic Elements
Road 5 connects.Under special circumstances, in order to save installing space so that the structure of hydraulic system assembly is more
Add compact, it is possible to the oil-in of the Hydraulic Elements being connected with needs by the oil-out of section hydraulic element is direct
Connect, such as, by connecting first-class connection.
Each Hydraulic Elements of hydraulic system assembly and each are described in detail below in conjunction with Fig. 1 and Fig. 2
Connection between individual Hydraulic Elements.
Especially, see Fig. 1, the duplex gear pump 2 in hydraulic system assembly include inlet port 21,
One oil-out 22 and the second oil-out 23, inlet port 21 is positioned at the bottom of duplex gear pump 2, and first goes out
Hydraulic fluid port 22 and the second oil-out 23 are positioned at the top of duplex gear pump 2, and inlet port 21 is respectively with first
Oil-out 22 connects with the second oil-out 23, and the first oil-out 22 is by conduit under fluid pressure 5 and hydraulic rotation
Connecting to assembly 3, the second oil-out 23 is connected with hydraulic multitandem valve 4 by conduit under fluid pressure 5.
Duplex gear pump 2 is the power source of whole hydraulic system assembly.Hydraulic oil in fuel tank 1 enters to be inhaled
In hydraulic fluid port 21, and by the engagement that mutually rolls of two pairs of gears in duplex gear pump 2, hydraulic oil is divided
It is not pumped into the first oil-out 22 and the second oil-out 23, and then it is total that hydraulic oil is pumped into fluid-link steering
In one-tenth 3 and hydraulic multitandem valve 4.Therefore, the hydraulic system assembly of the present invention is at duplex gear pump 2
Form two hydraulic circuits, i.e. hydraulic steering circui and hydraulic pressure output loop.By duplex gear pump 2
Two pairs of gears engage each other so that the low oil pressure in fuel tank 1 rises to the high oil pressure that can do work, for liquid
Force feed is delivered to hydraulic steering circui and hydraulic pressure output loop provides power source, therefore the first oil-out 22
It is high pressure hydraulic fluid port with the second oil-out 23.Especially, in a preferred embodiment of the invention, double
Connection gear pump 2 is horizontal duplex gear pump, and wherein, inlet port 21 is positioned at the bottom of duplex gear pump 2,
First oil-out 22 and the second oil-out 23 are positioned at the both sides at the top of duplex gear pump 2 so that first
Oil-out 22 and the oil pump capacity of the second oil-out 23 and oil pressure are roughly equal, it is to avoid hydraulic steering circui and
The phenomenon that hydraulic pressure output loop hydraulic oil supply flow is not enough occurs.
Especially, fluid-link steering assembly 3 includes hydraulic steering gear 31 and steering cylinder mechanism 32.Wherein,
Steering cylinder mechanism 32 includes two the steering hydraulic chambeies 321 separated by piston, hydraulic steering gear 31
Including turning to oil-in 311, turn to oil return opening 312 and two turn to actuator port 313, turn to oil-feed
Mouth 311 is connected with the first oil-out 22 by conduit under fluid pressure 5, turns to oil return opening 312 to pass through hydraulic tube
Road 5 is connected with fuel tank 1, and two turn to actuator port 313 to connect two turns by conduit under fluid pressure 5 respectively
To hydraulic cavities 321.Two turn to actuator port 313 and two steering hydraulic chambeies 321 to pass through conduit under fluid pressure
The connection of 5 forms hydraulic circuit so that control to turn to.Direction owing to turning to is different so that turn to work
Make hydraulic fluid port 313 at steering procedure both possibly as oil-in, it is also possible to as oil return opening, therefore at hydraulic pressure
Turn to be additionally provided with on the hydraulic steering gear 31 of assembly 3 and turn to oil return opening 312, by turning to oil return opening 312
Hydraulic oil is back in fuel tank 1.When being made without turning to, controlled by hydraulic steering gear 31,
Make hydraulic oil not by turning to actuator port 313 to flow through steering cylinder mechanism 32, and be so that hydraulic oil
From turning to oil-in 311 to flow into, and from turning to oil return opening 312 to be back to fuel tank 1.
Referring specifically to Fig. 1 and Fig. 2, such as, when needs turn to the left, by hydraulic steering gear 31
Control, two are turned in actuator port 313 be positioned at lower section turn to actuator port 313 as oil-in,
And connect with the steering hydraulic chamber 321 in left side, top turn to actuator port 313 as oil return opening, and
Connect with the steering hydraulic chamber 321 on right side so that the steering hydraulic chamber on the left of the high pressure entrance of hydraulic oil
In 321, promote piston and track rod to move, thus realize turning to the left.The operation turned to the right
The most in contrast, therefore do not repeat them here.
It is particularly preferred that turn to further facilitate control, reduce manpower, in the preferred reality of the present invention
Executing in mode, hydraulic steering gear 31 is all-hydraulic steering gear.All-hydraulic steering gear mainly includes servo-actuated turn
Valve and measure motor.Follow-up rotary valve includes spool, valve pocket, valve body, controls oil flow path direction.By stator and
Rotor realizes the function of measure motor, to ensure that outlet oil mass is directly proportional to the corner of steering wheel.Rotation side
To dish, when there being hydraulic oil to pass through measure motor, drive valve pocket and spool rotating in same direction by rotor, will
Hydraulic oil is delivered to the guide oil of flux amplification valve and is imported and exported, and controls the main valve plug action of flux amplification valve, oil
Amount is amplified, thus controls to turn to.
Owing to traditional fluid-link steering fuel tank is usually placed in top or the outside of electromotor, easy at fuel tank cap
Assembling the impurity such as dust, impurity, when replacing or annex solution force feed, is easily brought in fuel tank, is caused by user
Hydraulic steering system cleannes reduce, and occur the Block failure of the elements such as hydraulic steering gear time serious, impact
Steering behaviour.And it is owing in hydraulic system assembly, the precision of each parts is higher, quick to oil contamination
Perception is strong, easily produces fault and affects work.The most especially, the hydraulic system assembly of the present invention is also
Including oil-suction oil filter 6, oil-suction oil filter 6 is between fuel tank 1 and duplex gear pump 2, and passes through
Conduit under fluid pressure 5 connects with fuel tank 1 and inlet port 21 respectively.By oil-suction oil filter 6 by fuel tank 1
Impurity filter so that hydraulic oil can successfully flow through hydraulic steering circui and hydraulic pressure exports back
Road, it is to avoid produce the Block failure of the elements such as hydraulic steering gear.
Owing to the filtering accuracy of oil-suction oil filter 6 is higher, it is allowed to the hydraulic fluid flow rate passed through is relatively big, thus
Hydraulic steering circui and the cleannes of hydraulic pressure output loop can be ensured, hydraulic steering circui can also be met simultaneously
The work requirements stable with hydraulic pressure output loop.
Especially, hydraulic multitandem valve 4 includes banked direction control valves oil-in 41, banked direction control valves oil return opening 42 and many
Individual banked direction control valves actuator port 43, banked direction control valves oil-in 43 is by conduit under fluid pressure 5 and the second oil-out 23
Connecting, banked direction control valves oil return opening 42 is connected with fuel tank 1 by conduit under fluid pressure 5, each banked direction control valves working oil
Mouth 43 connects hydraulic quick coupler 7.The hydraulic oil flowed out by the second oil-out 23 passes through banked direction control valves oil-in
41 enter hydraulic multitandem valve 4, branch to multiple banked direction control valves actuator port 43 afterwards, and each banked direction control valves works
Hydraulic fluid port 43 connects a hydraulic quick coupler 7, is connected to the agricultural machinery and implement of hydraulic quick coupler 7 by hydraulic control.
Specifically, the second oil-out 23 in duplex gear pump 2, i.e. near the hydraulic oil in mounting flange face
The banked direction control valves oil-in 41 of mouth and hydraulic multitandem valve 4 connects, a valve block in the middle of hydraulic multitandem valve 4
It is provided with two banked direction control valves actuator ports 43, is respectively indicated as A1, B1, two banked direction control valves in fig. 2
Actuator port 43 connects a pair hydraulic quick coupler 7, each hydraulic quick coupler 7 and user configured hydraulic reversing plough
Connect Deng agricultural machinery and implement, constitute hydraulic loop；It also is provided with two on another valve block of hydraulic multitandem valve 4
Banked direction control valves actuator port 43, is respectively indicated as A2, B2, two banked direction control valves actuator ports 43 in fig. 2
Connecting a pair hydraulic quick coupler 7, each hydraulic quick coupler 7 can also connect other equipments.
In a preferred embodiment of the invention, in infinite mode, hydraulic quick coupler 7 exports for hydraulic pressure
Hydraulic quick coupler.Wherein hydraulic quick coupler 7 uses the material of high intensity, it is common that be applicable to 3-45 tonnage
Various types.Therefore hydraulic quick coupler 7 ensure that the rapid installation of agricultural machinery and implement, when can be greatly saved installation
Between, improve work efficiency.
Wherein, hydraulic quick coupler 7 can be directly connected to road valve actuator port 43, it is also possible to by connecting
Joint connects.In a preferred embodiment of the invention, agricultural machinery and implement are installed for convenience, especially, soon
Changing-over 7 is connected with banked direction control valves actuator port 43 by conduit under fluid pressure 5.Allow to be applicable to difference
The installation of the agricultural machinery and implement of position, improves the versatility that agricultural machinery and implement are installed.
Especially, hydraulic system assembly also includes that half separated type lifter 8, half separated type lifter 8 wrap
Including lift cylinder 81 and allotter 82, lift cylinder 81 includes lift cylinder oil-in 811 and promotes oil
Cylinder oil-out 812, allotter 82 includes allotter oil-in 821 and allotter oil-out 822, hydraulic pressure
Banked direction control valves 4 also includes banked direction control valves oil-out 44, and allotter oil-in 821 is by conduit under fluid pressure 5 and multichannel
Valve oil-out 44 connects, and allotter oil-out 822 is by conduit under fluid pressure 5 and lift cylinder oil-in 811
Connecting, lift cylinder oil-out 812 is connected with fuel tank 1 by conduit under fluid pressure 5.
Wherein, hydraulic multitandem valve 4 can connect the allotter 82 of half separated type lifter 8, specifically multichannel
Valve oil-out 44 is connected to allotter oil-in 821, and allotter oil-out 822 is by conduit under fluid pressure 5
Being connected with lift cylinder oil-in 811, lift cylinder oil-out 812 is by conduit under fluid pressure 5 and fuel tank 1
Connection, hydraulic oil enters the cavity of resorption of lift cylinder 81 through internal galleries, promotes piston rod to move, enters
And promote rear facility, to realize the elevating function of half separated type lifter 8；Hydraulic multitandem valve 4 simultaneously
On two middle valve blocks, four banked direction control valves actuator ports 43 connect a hydraulic quick coupler 7 respectively, can realize
The agricultural machinery and implement such as the hydraulic reversing plough being connected hydraulically to hydraulic quick coupler 7 so that hydraulic assembly system has hydraulic pressure
Enhanced feature and output hydraulic pressure power function.
In embodiments of the present invention, half separated type lifter 8 is fuel tank 1, allotter 82 and promotes
The conglomerate of oil cylinder 81.Wherein, fuel tank 1 is positioned at the bottom of half separated type lifter 8, allotter 82
With the top that lift cylinder 81 lays respectively at fuel tank 1.
In traditional hydraulic system assembly, lift cylinder oil-in 812 is directly and conduit under fluid pressure 5 grafting, but
After dismounting for a long time, it will make the mouth of pipe and the lift cylinder oil-in 812 of conduit under fluid pressure 5
Connect poorly sealed, thus cause the leakage of hydraulic oil and the deficiency of oil pressure.The most especially, promote
Connect at oil cylinder oil inlet mouth 812 and have the seal nipple that can removably connect with conduit under fluid pressure 5.This sealing
Joint can facilitate the removably connecting, so that carry of lift cylinder oil-in 812 and conduit under fluid pressure 5
Oil-lifting jar oil-in 812 is tightly connected with conduit under fluid pressure 5.
Especially, the conduit under fluid pressure 5 between lift cylinder oil-out 812 and fuel tank 1 is provided with unidirectional joint
Stream valve 9.The hydraulic oil in the cavity of resorption of lift cylinder 81 is made to be back to fuel tank 1 by one-way throttle valve 9
In, the hydraulic oil being not result in fuel tank 1 is directly entered in lift cylinder 81 so that lift cylinder 81
Oil-feed be only controlled by allotter 82, thus facilitate the control that agricultural machinery and implement promote.
Additionally, present invention also offers a kind of tractor, this tractor includes the hydraulic pressure system that the present invention provides
System assembly.It is total by hydraulic steering circui and hydraulic pressure output loop are designed as a hydraulic system in parallel
Become, turn to tractor hydraulic while of satisfied, hydraulic pressure lift and work requirements during hydraulic pressure output, thus simple
Change fluid pressure line connection, reduced design cost so that the layout of complete machine of tractor is simpler attractive in appearance.
To sum up, in a preferred embodiment of the invention, as shown in Figure 1 and Figure 2, the hydraulic pressure of the present invention
System synthesis includes fuel tank 1, oil-suction oil filter 6, duplex gear pump 2, hydraulic steering gear 31, turns to
Oil cylinder mechanism 32, hydraulic multitandem valve 4, hydraulic quick coupler 7, half separated type lifter 8 and connect each liquid
The conduit under fluid pressure 5 of pressure element.Wherein, in infinite mode, half separated type lifter 8 includes fuel tank
1, allotter 82 and lift cylinder 81.
Duplex gear pump 2 is the power source of whole hydraulic system assembly, and duplex gear pump 2 is altogether by three oil
Mouthful, the bottom of duplex gear pump 2 is inlet port 21, for being connected with oil-suction oil filter 6；Duplicate gear
The top of pump 2 is provided with two high pressure hydraulic fluid ports, the i.e. first oil-out 22 and the second oil-out 23, Qi Zhonghou
End high pressure hydraulic fluid port (the first oil-out 22) turns to oil-feed by conduit under fluid pressure 5 and hydraulic steering gear 31
Mouth 311 connection.Oil return opening 312 and half separated type lifter 8 front end is turned on hydraulic steering gear 31
Low pressure hydraulic fluid port connection；Two other turn to actuator port 313 respectively with the two of steering cylinder mechanism 32
Individual steering hydraulic chamber 321 connects.Oil-suction oil filter 6, duplex gear pump 2, hydraulic steering gear 31, turn
To oil cylinder mechanism 32, half separated type lifter 8 and connect the conduit under fluid pressure 5 of each Hydraulic Elements and form one
The hydraulic steering circui of individual closing.The hydraulic oil provided by rotating steering wheel to control duplex gear pump 2 enters
Enter two steering hydraulic chambeies 321 of steering cylinder mechanism 32, thus realize the left and right turn of tractor, behaviour
Vertical light, stability is strong.
Another high pressure hydraulic fluid port (the second oil-out 23) in duplex gear pump 2, i.e. near mounting flange face
High pressure hydraulic fluid port and the banked direction control valves oil-in 41 of hydraulic multitandem valve 4 connect, the centre of hydraulic multitandem valve 4
Two banked direction control valves actuator ports 43 on one valve block, are labeled as A1, B1 in fig. 2 and connect a pair quick change
Joint 7, the agricultural machinery and implement such as this hydraulic quick coupler 7 and user configured hydraulic reversing plough connect, and constitute hydraulic pressure work
Make loop；On another valve block two banked direction control valves actuator ports 43, be labeled as A2, B2 in fig. 2
Connect a pair hydraulic quick coupler 7 and can also connect other equipments.
Allotter 82 on the banked direction control valves oil-out 44 of hydraulic multitandem valve 4 and half separated type lifter 8
Allotter oil-in 821 connects, when described hydraulic multitandem valve 4 spool is positioned at middle position (see Fig. 2), double
High-voltage oil liquid allotter oil-feed of direct allotter 82 after hydraulic multitandem valve 4 that connection gear pump 2 provides
Mouth 821, hydraulic oil enters the cavity of resorption of lift cylinder 81 through internal galleries, promotes piston rod to move, enters
And promote rear facility.When two two-way valve blocks in allotter 82 are positioned at the position shown by Fig. 2,
The high-voltage oil liquid that duplex gear pump 2 is provided directly returns the fuel tank 1 in half separated type lifter 8, promotes
The hydraulic oil of oil cylinder 81 cavity of resorption is in one-way throttle valve 9 also returns to fuel tank 1.
The present invention is by fuel tank 1, duplex gear pump 2, fluid-link steering assembly 3 and connects each hydraulic pressure unit
The conduit under fluid pressure 5 of part forms a hydraulic steering circui closed, i.e. hydraulic oil sequentially passes through from fuel tank 1
Duplex gear pump 2, fluid-link steering assembly 3, and it is back to fuel tank 1 by fluid-link steering assembly 3；By oil
Case 1, duplex gear pump 2, hydraulic multitandem valve 4 and connect the conduit under fluid pressure 5 of each Hydraulic Elements and form
One hydraulic pressure output loop closed, i.e. hydraulic oil sequentially passes through duplex gear pump 2, hydraulic pressure from fuel tank 1
Banked direction control valves 4, and it is back to fuel tank 1 by hydraulic multitandem valve 4.The hydraulic system connected by above-mentioned design
Assembly, i.e. shares a fuel tank 1 and a duplicate gear by hydraulic steering circui and hydraulic pressure output loop
Pump 2 so that traditional hydraulic steering system and liquid pressure output system are changed by two independent hydraulic systems
Entering is a hydraulic system assembly in parallel, optimizes and decreases fluid-link steering independent in conventional hydraulic
Fuel tank and independence.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention does not limit
Detail in above-mentioned embodiment, in the technology concept of the present invention, can be to the present invention
Technical scheme carry out multiple simple variant, these simple variant belong to protection scope of the present invention.
It is further to note that each the concrete technology described in above-mentioned detailed description of the invention is special
Levy, in the case of reconcilable, can be combined by any suitable means.In order to avoid need not
The repetition wanted, various possible compound modes are illustrated by the present invention the most separately.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as its
Without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a hydraulic system assembly, it is characterised in that described hydraulic system assembly include fuel tank (1),
Duplex gear pump (2), fluid-link steering assembly (3), hydraulic multitandem valve (4) and conduit under fluid pressure (5),
Wherein, described fuel tank (1) is connected with described duplex gear pump (2) by described conduit under fluid pressure (5),
Described duplex gear pump (2) is by described conduit under fluid pressure (5) with described fluid-link steering assembly (3) even
Connecing, described fluid-link steering assembly (3) is connected with described fuel tank (1) by described conduit under fluid pressure (5),
To form hydraulic steering circui；Described duplex gear pump (2) is also by described conduit under fluid pressure (5) and institute
State hydraulic multitandem valve (4) connect, described hydraulic multitandem valve (4) by described conduit under fluid pressure (5) with
Described fuel tank (1) connects, to form hydraulic pressure output loop.
Hydraulic system assembly the most according to claim 1, it is characterised in that described duplicate gear
Pump (2) includes inlet port (21), the first oil-out (22) and the second oil-out (23), described suction
Hydraulic fluid port (21) is positioned at the bottom of described duplex gear pump (2), described first oil-out (22) and institute
State the second oil-out (23) and be positioned at the top of described duplex gear pump (2), described inlet port (21)
Connect with described first oil-out (22) and described second oil-out (23) respectively, described first fuel-displaced
Mouth (22) is connected with described fluid-link steering assembly (3) by described conduit under fluid pressure (5), and described second
Oil-out (23) is connected with described hydraulic multitandem valve (4) by described conduit under fluid pressure (5).
Hydraulic system assembly the most according to claim 2, it is characterised in that described fluid-link steering
Assembly (3) includes hydraulic steering gear (31) and steering cylinder mechanism (32), described hydraulic steering gear (31)
Including turning to oil-in (311), turn to oil return opening (312) and two turn to actuator port (313),
Described turn to oil-in (311) by described conduit under fluid pressure (5) and described first oil-out (22) even
Connect, described in turn to oil return opening (312) to be connected with described fuel tank (1) by described conduit under fluid pressure (5),
Described steering cylinder mechanism (32) includes two steering hydraulic chambeies (321), turns to working oil described in two
Mouth (313) connects two described steering hydraulic chambeies (321) by described conduit under fluid pressure (5) respectively.
Hydraulic system assembly the most according to claim 3, it is characterised in that described hydraulic system
Assembly also includes that oil-suction oil filter (6), described oil-suction oil filter (6) are positioned at described fuel tank (1) and institute
State between duplex gear pump (2), and by described conduit under fluid pressure (5) respectively with described fuel tank (1)
Connect with described inlet port (21).
Hydraulic system assembly the most according to claim 4, it is characterised in that described hydraulic multichannel
Valve (4) includes banked direction control valves oil-in (41), banked direction control valves oil return opening (42) and the work of multiple banked direction control valves
Hydraulic fluid port (43), described banked direction control valves oil-in (43) is gone out with described second by described conduit under fluid pressure (5)
Hydraulic fluid port (23) connects, and described banked direction control valves oil return opening (42) passes through described conduit under fluid pressure (5) with described
Fuel tank (1) connects, and each described banked direction control valves actuator port (43) connects hydraulic quick coupler (7).
Hydraulic system assembly the most according to claim 5, it is characterised in that described hydraulic quick coupler
(7) it is connected with described banked direction control valves actuator port (43) by described conduit under fluid pressure (5).
Hydraulic system assembly the most according to claim 2, it is characterised in that described hydraulic system
Assembly also includes that half separated type lifter (8), described half separated type lifter (8) include lift cylinder
(81) and allotter (82), described lift cylinder (81) include lift cylinder oil-in (811) and
Lift cylinder oil-out (812), described allotter (82) includes allotter oil-in (821) and divides
Orchestration oil-out (822), described hydraulic multitandem valve (4) also includes banked direction control valves oil-out (44), described
Allotter oil-in (821) is by described conduit under fluid pressure (5) with described banked direction control valves oil-out (44) even
Connecing, described allotter oil-out (822) is by described conduit under fluid pressure (5) and described lift cylinder oil-feed
Mouth (811) connects, and described lift cylinder oil-out (812) passes through described conduit under fluid pressure (5) and institute
State fuel tank (1) connection.
Hydraulic system assembly the most according to claim 7, it is characterised in that described lift cylinder
Oil-in (812) place connects the seal nipple that can removably connect with described conduit under fluid pressure (5).
Hydraulic system assembly the most according to claim 8, it is characterised in that described lift cylinder
Described conduit under fluid pressure (5) between oil-out (812) and described fuel tank (1) is provided with one-way throttle
Valve (9).
10. a tractor, it is characterised in that described tractor includes according in claim 1 to 9
Hydraulic system assembly described in any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610461016.1A CN105937511B (en) | 2016-06-22 | 2016-06-22 | Hydraulic system assembly and tractor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610461016.1A CN105937511B (en) | 2016-06-22 | 2016-06-22 | Hydraulic system assembly and tractor |
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| CN105937511B CN105937511B (en) | 2019-02-19 |
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| CN201610461016.1A Active CN105937511B (en) | 2016-06-22 | 2016-06-22 | Hydraulic system assembly and tractor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278625A (en) * | 2021-12-12 | 2022-04-05 | 江苏悦达智能农业装备有限公司 | Hydraulic system of electric tractor |
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|---|---|
| CN105937511B (en) | 2019-02-19 |
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Address after: No.98, Songcheng Road, Kaifeng City, Henan Province Patentee after: Henan Zoomlion Intelligent Agricultural Machinery Co.,Ltd. Address before: No.98, Songcheng Road, Kaifeng City, Henan Province Patentee before: HENAN RICHUANG GENERAL MACHINERY MANUFACTURE Co.,Ltd. |