CN105937511B - Hydraulic system assembly and tractor - Google Patents
Hydraulic system assembly and tractor Download PDFInfo
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- CN105937511B CN105937511B CN201610461016.1A CN201610461016A CN105937511B CN 105937511 B CN105937511 B CN 105937511B CN 201610461016 A CN201610461016 A CN 201610461016A CN 105937511 B CN105937511 B CN 105937511B
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- hydraulic
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- fuel tank
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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)
- Mechanically-Actuated Valves (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to Hydraulic Fields, disclose a kind of hydraulic system assembly and tractor, the hydraulic system assembly includes fuel tank (1), duplex gear pump (2), fluid-link steering assembly (3), hydraulic multitandem valve (4) and hydraulic pipeline (5), wherein, fuel tank (1) is connect by hydraulic pipeline (5) with duplex gear pump (2), duplex gear pump (2) is connect by hydraulic pipeline (5) with fluid-link steering assembly (3), fluid-link steering assembly (3) is connect by hydraulic pipeline (5) with fuel tank (1), to form hydraulic steering circui；Duplex gear pump (2) is also connect by hydraulic pipeline (5) with the hydraulic multitandem valve (4), hydraulic multitandem valve (4) is connect by hydraulic pipeline (5) with fuel tank (1), to form hydraulic output loop.The present invention can achieve the purpose that simplified hydraulic system assembly and reduce design cost, guarantee the reliable and stable work of tractor.
Description
Technical field
The present invention relates to a kind of hydraulic systems, and in particular, to a kind of hydraulic system assembly and tractor.
Background technique
Tractor application range in China's is gradually expanded now, the development need tractor multifunction of modern agriculture engineering,
Economic performance is more excellent.Wherein, towed agricultural machinery is often gone up and down by hydraulic output device connection at middle-size and small-size tractor rear
Tool, tipping trailer, hydraulic reversion plough etc..
Most of middle-size and small-size tractors, using independent hydraulically controlled steering system and independent hydraulically controlled output system, steering system
System and hydraulic output device are made of independent gear pump, hydraulic oil container and hydraulic management attachment respectively.Certain mini powers drag
Machine drawing shares a hydraulic power source using hydraulic steering system and hydraulic output system, guarantees to turn with parallel connection type Characteristic of Priority Valve
It is reliable to system operational security.But relatively high power type tractor use this arrangement when, hydraulic power source be double piston-rod double acting
Formula hydraulic cylinder provides underfed, and hydraulic steering system functional reliability reduces.According to hydraulic steering system and hydraulic output
System, which works independently, carries out complete machine arrangement, and the Hydraulic Elements such as the two fluid pressure line need to separately design, and tractor engine and drives
It sails that the overlay structures such as room are compact, and limitations are larger, assembles hydraulic oil container and pipeline is inconvenient, 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 hydraulic system
Assembly improves, to guarantee the reliable and stable work of tractor.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic system assembly and tractor, which can reach simplified
Hydraulic system assembly and the purpose for reducing design cost guarantee the reliable and stable work of tractor.
To achieve the goals above, according to an aspect of the present invention, a kind of hydraulic system assembly, the hydraulic system are provided
Assembly includes fuel tank, duplex gear pump, fluid-link steering assembly, hydraulic multitandem valve and hydraulic pipeline, wherein the fuel tank passes through
The hydraulic pipeline is connect with the duplex gear pump, and the duplex gear pump passes through the hydraulic pipeline and the fluid-link steering
Assembly connection, the fluid-link steering assembly is connect by the hydraulic pipeline with the fuel tank, to form hydraulic steering circui；Institute
It states duplex gear pump and also passes through the hydraulic pipeline and connect with the hydraulic multitandem valve, the hydraulic multitandem valve passes through described hydraulic
Pipeline is connect with the fuel tank, to form hydraulic output loop.
Preferably, the duplex gear pump includes inlet port, the first oil outlet and the second oil outlet, and the inlet port is located at
The bottom of the duplex gear pump, first oil outlet and second oil outlet are located at the top of the duplex gear pump,
The inlet port is connected to first oil outlet and second oil outlet respectively, and first oil outlet passes through described hydraulic
Pipeline is connect with the fluid-link steering assembly, and second oil outlet is connected by the hydraulic pipeline and the hydraulic multitandem valve
It connects.
Preferably, the fluid-link steering assembly includes hydraulic steering gear and steering cylinder mechanism, the hydraulic steering gear packet
It includes and turns to oil inlet, turn to oil return opening and two steering actuator ports, the steering oil inlet passes through the hydraulic pipeline and institute
The connection of the first oil outlet is stated, the steering oil return opening is connect by the hydraulic pipeline with the fuel tank, the steering cylinder machine
Structure includes two steering hydraulic chambers, and two steering actuator ports are connected to two steerings by the hydraulic pipeline respectively
Hydraulic cavities.
Preferably, the hydraulic system assembly further includes oil-suction oil filter, the oil-suction oil filter be located at the fuel tank with
Between the duplex gear pump, and it is connected to respectively with the fuel tank and the inlet port by the hydraulic pipeline.
Preferably, the hydraulic multitandem valve includes multi-way valve oil inlet, multi-way valve oil return opening and the work of multiple multi-way valves
Hydraulic fluid port, the multi-way valve oil inlet are connect by the hydraulic pipeline with second oil outlet, and the multi-way valve oil return opening is logical
It crosses the hydraulic pipeline to connect with the fuel tank, each multi-way valve actuator port is connected with quick-release connector.
Preferably, the quick-release connector is connect by the hydraulic pipeline with the multi-way valve actuator port.
Preferably, the hydraulic system assembly further includes half separated type lifter, and the half separated type lifter includes mentioning
Oil-lifting jar and distributor, the lift cylinder include lift cylinder oil inlet and lift cylinder oil outlet, and the distributor includes
Distributor oil inlet and distributor oil outlet, the hydraulic multitandem valve further include multi-way valve oil outlet, the distributor oil inlet
Connect by the hydraulic pipeline with the multi-way valve oil outlet, the distributor oil outlet by the hydraulic pipeline with it is described
The connection of lift cylinder oil inlet, the lift cylinder oil outlet are connected to by the hydraulic pipeline with the fuel tank.
Preferably, the sealing that can be detachably connected with the hydraulic pipeline is connected at the lift cylinder oil inlet to connect
Head.
Preferably, the hydraulic pipeline between the lift cylinder oil outlet and the fuel tank is equipped with one-way throttle
Valve.
In addition, according to another aspect of the present invention, providing a kind of tractor, the tractor includes provided by the invention
The hydraulic system assembly.
Through the above technical solutions, the present invention is each hydraulic by fuel tank, duplex gear pump, fluid-link steering assembly and connection
The hydraulic pipeline of element forms a closed hydraulic steering circui；Pass through fuel tank, duplex gear pump, hydraulic multitandem valve and connection
The hydraulic pipeline of each Hydraulic Elements forms a closed hydraulic output loop.Hydraulic system assembly by above-mentioned design makes
By traditional hydraulic steering system and hydraulic output system by two independent hydraulic systems be improved to one it is in parallel hydraulic
System synthesis, optimization reduce independent fluid-link steering fuel tank and independent gear pump in conventional hydraulic, reduce design
Cost, while fluid pressure line connection is simplified, it arranges simple and beautiful.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the perspective view of hydraulic system assembly according to the preferred embodiment of the present invention；
Fig. 2 is the schematic diagram of hydraulic system assembly according to the preferred embodiment of the present invention.
Description of symbols
1 fuel tank, 2 duplex gear pump
3 fluid-link steering assembly, 4 hydraulic multitandem valve
5 hydraulic pipeline, 6 oil-suction oil filter
7 quick-release connector, 8 half separated type lifter
9 one-way throttle valve, 21 inlet port
22 first oil outlet, 23 second oil outlet
31 hydraulic steering gear, 32 steering cylinder mechanism
311, which turn to oil inlet 312, turns to oil return opening
313 turn to 321 steering hydraulic chamber of actuator port
41 multi-way valve oil inlet, 42 multi-way valve oil return opening
43 multi-way valve actuator port, 44 multi-way valve oil outlet
81 lift cylinder, 82 distributor
811 lift cylinder oil inlet, 812 lift cylinder oil outlet
821 distributor oil inlet, 822 distributor oil outlet
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality used is usually directed to attached drawing as " upper and lower "
Shown in for direction either for it is vertical, on vertical or gravity direction for each component mutual alignment relation description use
Word.
A kind of perspective view of hydraulic system assembly according to the preferred embodiment of the present invention is shown referring to Fig. 1, Fig. 1.
The hydraulic system assembly includes fuel tank 1, duplex gear pump 2, fluid-link steering assembly 3, hydraulic multitandem valve 4 and hydraulic pipeline 5,
Wherein, fuel tank 1 is connect by hydraulic pipeline 5 with duplex gear pump 2, and duplex gear pump 2 is total by hydraulic pipeline 5 and fluid-link steering
At 3 connections, fluid-link steering assembly 3 is connect by hydraulic pipeline 5 with fuel tank 1, to form hydraulic steering circui；Duplex gear pump 2
It is also connect by hydraulic pipeline 5 with hydraulic multitandem valve 4, hydraulic multitandem valve 4 is connect by hydraulic pipeline 5 with fuel tank 1, to form liquid
Press output loop.
The hydraulic pipeline that the present invention passes through fuel tank 1, duplex gear pump 2, fluid-link steering assembly 3 and each Hydraulic Elements of connection
5 one closed hydraulic steering circui of composition, i.e. hydraulic oil successively pass through duplex gear pump 2, fluid-link steering assembly 3 from fuel tank 1,
And fuel tank 1 is back to by fluid-link steering assembly 3；It is each hydraulic by fuel tank 1, duplex gear pump 2, hydraulic multitandem valve 4 and connection
The hydraulic pipeline 5 of element forms a closed hydraulic output loop, i.e., hydraulic oil from fuel tank 1 successively by duplex gear pump 2,
Hydraulic multitandem valve 4, and fuel tank 1 is back to by hydraulic multitandem valve 4.The hydraulic system assembly connected by above-mentioned design, that is, pass through
Hydraulic steering circui and hydraulic output loop share a fuel tank 1 and a duplex gear pump 2, so that by traditional fluid-link steering
System and hydraulic output system are improved to a hydraulic system assembly in parallel by two independent hydraulic systems, and optimization reduces
Independent fluid-link steering fuel tank and independent gear pump, reduce design cost in conventional hydraulic, while simplifying hydraulic
Piping connection is arranged simple and beautiful.
Herein it should be strongly noted that hydraulic pipeline 5 can not also be used to connect between above-mentioned each Hydraulic Elements.
Under special circumstances, in order to save installation space, so that the structure of hydraulic system assembly is more compact, it can also be by section hydraulic member
The oil inlet for the Hydraulic Elements that the oil outlet of part is connect with needs is directly connected to, for example, passing through the connection such as connector.
Below in conjunction with Fig. 1 and Fig. 2 describe in detail hydraulic system assembly each Hydraulic Elements and each hydraulic member
Connection between part.
Particularly, referring to Fig. 1, the duplex gear pump 2 in hydraulic system assembly includes inlet port 21,22 and of the first oil outlet
Second oil outlet 23, inlet port 21 are located at the bottom of duplex gear pump 2, and the first oil outlet 22 and the second oil outlet 23 are located at duplex
The top of gear pump 2, inlet port 21 are connected to the first oil outlet 22 and the second oil outlet 23 respectively, and the first oil outlet 22 passes through liquid
Pressure pipeline 5 is connect with fluid-link steering assembly 3, and the second oil outlet 23 is connect by hydraulic pipeline 5 with hydraulic multitandem valve 4.
Duplex gear pump 2 is the power source of entire hydraulic system assembly.Hydraulic oil in fuel tank 1 enters in inlet port 21,
And it is engaged by the mutual rolling of two pairs of gears in duplex gear pump 2 and hydraulic oil is pumped into the first oil outlet 22 and the respectively
Two oil outlets 23, and then hydraulic oil is pumped into fluid-link steering assembly 3 and hydraulic multitandem valve 4.Therefore, hydraulic pressure system of the invention
System assembly is two hydraulic circuits of formation, i.e. hydraulic steering circui and hydraulic output loop at duplex gear pump 2.Pass through duplex
Two pairs of gears of gear pump 2 are intermeshed, and are hydraulic oil so that the low oil pressure in fuel tank 1 to be risen to the high oil pressure that can be done work
It is delivered to hydraulic steering circui and hydraulic output loop provides power source, therefore the first oil outlet 22 and the second oil outlet 23 are
High pressure oil port.Particularly, in a preferred embodiment of the invention, duplex gear pump 2 is horizontal duplex gear pump, wherein is inhaled
Hydraulic fluid port 21 is located at the bottom of duplex gear pump 2, and the first oil outlet 22 and the second oil outlet 23 are located at the top of duplex gear pump 2
Two sides so that the oil pump capacity and oil pressure of the first oil outlet 22 and the second oil outlet 23 are roughly equal, avoid hydraulic steering circui and
The phenomenon of hydraulic output loop hydraulic oil supply flow deficiency occurs.
Particularly, fluid-link steering assembly 3 includes hydraulic steering gear 31 and steering cylinder mechanism 32.Wherein, steering cylinder machine
Structure 32 includes the two steering hydraulic chambers 321 separated by piston, and hydraulic steering gear 31 includes turning to oil inlet 311, turning to back
Hydraulic fluid port 312 and two steering actuator ports 313 turn to oil inlet 311 and are connect by hydraulic pipeline 5 with the first oil outlet 22, turned
It is connect to oil return opening 312 by hydraulic pipeline 5 with fuel tank 1, two steering actuator ports 313 are connected to by hydraulic pipeline 5 respectively
Two steering hydraulic chambers 321.Two steering actuator ports 313 and two steering hydraulic chambers 321 pass through the connection shape of hydraulic pipeline 5
At hydraulic circuit, so that control turns to.Since the direction of steering is different, both may be used so that turning to actuator port 313 in steering procedure
Oil inlet can be used as, it is also possible to as oil return opening, therefore be additionally provided with and turn to back on the hydraulic steering gear of fluid-link steering assembly 3 31
Hydraulic oil is back in fuel tank 1 by hydraulic fluid port 312 by turning to oil return opening 312.When not needing to be turned to, pass through hydraulic rotation
To device 31 control so that hydraulic oil do not pass through turn to actuator port 313 flow through steering cylinder mechanism 32, but make hydraulic oil from
It turns to oil inlet 311 to flow into, and be back in fuel tank 1 from oil return opening 312 is turned to.
Referring specifically to Fig. 1 and Fig. 2, for example, being controlled when needing to turn to the left by hydraulic steering gear 31, two are turned
Into actuator port 313, underlying steering actuator port 313 is used as oil inlet, and connects with the steering hydraulic chamber 321 in left side
Logical, the steering actuator port 313 of top is used as oil return opening, and is connected to the steering hydraulic chamber 321 on right side, so that the height of hydraulic oil
It is pressed into the steering hydraulic chamber 321 in left side, pushes piston and track rod mobile, turned to the left to realize.It turns right
To operation then in contrast, therefore details are not described herein.
It is particularly preferred that turning to further facilitate control, manpower is reduced, in a preferred embodiment of the invention,
Hydraulic steering gear 31 is all-hydraulic steering gear.All-hydraulic steering gear mainly includes follow-up rotary valve and measure motor.Follow-up rotary valve packet
Spool, valve pocket, valve body are included, oil stream direction is controlled.The function of measure motor is realized by stator and rotor, with guarantee outlet oil mass with
The corner of steering wheel is directly proportional.Steering wheel rotation drives valve pocket and spool by rotor when there is hydraulic oil to pass through measure motor
It rotates in same direction, the guide oil that hydraulic oil is sent to flux amplification valve is imported and exported, control the main valve plug movement of flux amplification valve, oil mass
Amplified, to control steering.
Since traditional fluid-link steering fuel tank is usually placed in the top or outside of engine, easy gather dust at fuel tank cap
Equal impurity, user easily bring impurity in fuel tank into when replacing or adding hydraulic oil, and hydraulic steering system cleannes is caused to drop
It is low, occur the Block failure of the elements such as hydraulic steering gear when serious, influences steering behaviour.And due to each in hydraulic system assembly
The precision of a components is higher, strong to oil contamination sensibility, easily generates failure and influences work.Therefore particularly, this hair
Bright hydraulic system assembly further includes oil-suction oil filter 6, and oil-suction oil filter 6 leads between fuel tank 1 and duplex gear pump 2
Hydraulic pipeline 5 is crossed to be connected to fuel tank 1 and inlet port 21 respectively.The impurity in fuel tank 1 is filtered by oil-suction oil filter 6,
Enable hydraulic oil successfully to flow through hydraulic steering circui and hydraulic output loop, avoids generating the elements such as hydraulic steering gear
Block failure.
Since the filtering accuracy of oil-suction oil filter 6 is higher, allow by hydraulic fluid flow rate it is larger, hereby it is ensured that hydraulic
The cleannes of circuit and hydraulic output loop are turned to, while being also able to satisfy hydraulic steering circui and the stable work of hydraulic output loop
Make demand.
Particularly, hydraulic multitandem valve 4 includes multi-way valve oil inlet 41, multi-way valve oil return opening 42 and the work of multiple multi-way valves
Hydraulic fluid port 43, multi-way valve oil inlet 43 are connect by hydraulic pipeline 5 with the second oil outlet 23, and multi-way valve oil return opening 42 passes through hydraulic tube
Road 5 is connect with fuel tank 1, and each multi-way valve actuator port 43 is connected with quick-release connector 7.The high pressure oil flowed out by the second oil outlet 23
Enter hydraulic multitandem valve 4 by multi-way valve oil inlet 41, branches to multiple multi-way valve actuator ports 43, each multi-way valve work later
Make hydraulic fluid port 43 and be connected with a quick-release connector 7, the agricultural machinery and implement of quick-release connector 7 are connected to by hydraulic control.
Specifically, the second oil outlet 23 in duplex gear pump 2, i.e., close to the high pressure oil port in mounting flange face and hydraulic more
The multi-way valve oil inlet 41 of road valve 4 connects, and sets that there are two multi-way valve actuator ports on a valve block among hydraulic multitandem valve 4
43, A1, B1 are respectively indicated as in Fig. 2, two multi-way valve actuator ports 43 connect a pair of of quick-release connector 7, each quick-release connector 7
It is connected to agricultural machinery and implement such as the hydraulic reversing ploughs of user configuration, constitutes hydraulic circuit；On another valve block of hydraulic multitandem valve 4
If there are two multi-way valve actuator ports 43, A2, B2 are respectively indicated as in Fig. 2, two multi-way valve actuator ports 43 connect a pair
Quick-release connector 7, each quick-release connector 7 also can connect other equipments.
In a preferred embodiment of the invention, in a manner of infinite, quick-release connector 7 is hydraulic output quick-release connector.
Wherein quick-release connector 7 is generally applicable for the various types in 3-45 tonnage using high-intensitive material.Therefore 7 energy of quick-release connector
The rapid installation for enough guaranteeing agricultural machinery and implement, can be greatly saved the set-up time, improve working efficiency.
Wherein, quick-release connector 7 can be directly connected to road valve actuator port 43, can also be connected by jointing.?
In the preferred embodiment of the present invention, agricultural machinery and implement in order to facilitate the installation of, particularly, quick-release connector 7 pass through hydraulic pipeline 5 and multichannel
Valve actuator port 43 connects.Allow to the installation of the agricultural machinery and implement suitable for different location, improves the versatility of agricultural machinery and implement installation.
Particularly, hydraulic system assembly further includes half separated type lifter 8, and half separated type lifter 8 includes lift cylinder
81 and distributor 82, lift cylinder 81 includes lift cylinder oil inlet 811 and lift cylinder oil outlet 812, and distributor 82 includes
Distributor oil inlet 821 and distributor oil outlet 822, hydraulic multitandem valve 4 further include multi-way valve oil outlet 44, distributor oil inlet
821 are connect by hydraulic pipeline 5 with multi-way valve oil outlet 44, distributor oil outlet 822 pass through hydraulic pipeline 5 and lift cylinder into
Hydraulic fluid port 811 connects, and lift cylinder oil outlet 812 is connected to by hydraulic pipeline 5 with fuel tank 1.
Wherein, hydraulic multitandem valve 4 can connect the distributor 82 of half separated type lifter 8, specifically multi-way valve oil outlet 44
It is connected to distributor oil inlet 821, distributor oil outlet 822 is connect with lift cylinder oil inlet 811 by hydraulic pipeline 5, mentioned
Oil-lifting jar oil outlet 812 is connected to by hydraulic pipeline 5 with fuel tank 1, and hydraulic oil enters under lift cylinder 81 by internal galleries
Chamber pushes piston rod mobile, and then promotes rear equipment, to realize the elevating function of half separated type lifter 8；It is hydraulic more simultaneously
Four multi-way valve actuator ports 43 are separately connected a quick-release connector 7 on two valve blocks among road valve 4, and hydraulic connecting can be realized
The agricultural machinery and implement such as the hydraulic reversing plough to quick-release connector 7, so that hydraulic assembly system has the function of that hydraulic pressure lift and output hydraulic pressure are dynamic
Power function.
In embodiments of the present invention, half separated type lifter 8 is the collection of fuel tank 1, distributor 82 and lift cylinder 81
Adult.Wherein, fuel tank 1 is located at the bottom of half separated type lifter 8, and distributor 82 and lift cylinder 81 are located at fuel tank 1
Top.
In traditional hydraulic system assembly lift cylinder oil inlet 812 directly with 5 grafting of hydraulic pipeline, but by for a long time
Dismounting after, it will so that the nozzle of hydraulic pipeline 5 and the connection of lift cylinder oil inlet 812 are poorly sealed, so as to cause liquid
The leakage of pressure oil and the deficiency of oil pressure.Therefore particularly, being connected at lift cylinder oil inlet 812 can be with hydraulic pipeline 5
The seal nipple being detachably connected.The seal nipple can facilitate lift cylinder oil inlet 812 to connect with the detachable of hydraulic pipeline 5
It connects, so that the sealed connection of lift cylinder oil inlet 812 and hydraulic pipeline 5.
Particularly, the hydraulic pipeline 5 between lift cylinder oil outlet 812 and fuel tank 1 is equipped with one-way throttle valve 9.So that
Hydraulic oil in the cavity of resorption of lift cylinder 81 is back in fuel tank 1 by one-way throttle valve 9, not will lead to hydraulic in fuel tank 1
Oil is directly entered in lift cylinder 81, so that the oil inlet of lift cylinder 81 only passes through distributor 82 and controlled, to facilitate agriculture
The control that equipment is promoted.
In addition, the tractor includes hydraulic system assembly provided by the invention the present invention also provides a kind of tractor.It is logical
It crosses and hydraulic steering circui and hydraulic output loop is designed as a hydraulic system assembly in parallel, to meet tractor liquid simultaneously
Work requirements when pressure steering, hydraulic pressure lift and hydraulic output reduce design cost, make to simplify fluid pressure line connection
Obtain the simpler beauty of arrangement of complete machine of tractor.
To sum up, in a preferred embodiment of the invention, as shown in Figure 1 and Figure 2, hydraulic system assembly of the invention includes
Fuel tank 1, oil-suction oil filter 6, duplex gear pump 2, hydraulic steering gear 31, steering cylinder mechanism 32, hydraulic multitandem valve 4, fast changing-over
The hydraulic pipeline 5 of first 7, half separated type lifter 8 and each Hydraulic Elements of connection.Wherein, in a manner of infinite, half separated type
Lifter 8 includes fuel tank 1, distributor 82 and lift cylinder 81.
Duplex gear pump 2 is the power source of entire hydraulic system assembly, and duplex gear pump 2 is altogether by three hydraulic fluid ports, duplex-gear
The bottom of wheel pump 2 is inlet port 21, for connecting with oil-suction oil filter 6；The top of duplex gear pump 2 is set there are two high pressure oil
Mouthful, i.e. the first oil outlet 22 and the second oil outlet 23, wherein rear end high pressure oil port (the first oil outlet 22) by hydraulic pipeline 5 with
The steering oil inlet 311 of hydraulic steering gear 31 is connected to.Steering oil return opening 312 and half separated type lifter on hydraulic steering gear 31
The low pressure hydraulic fluid port of 8 front ends is connected to；Other two turn to actuator port 313 respectively with two steering hydraulics of steering cylinder mechanism 32
Chamber 321 is connected to.Oil-suction oil filter 6, duplex gear pump 2, hydraulic steering gear 31, steering cylinder mechanism 32, half separated type lifter 8
And the hydraulic pipeline 5 of each Hydraulic Elements of connection forms a closed hydraulic steering circui.It is double by rotation steering wheel control
The high pressure oil that connection gear pump 2 provides enters two steering hydraulic chambers 321 of steering cylinder mechanism 32, to realize a left side for tractor
Right turn, manipulation is light, and stability is strong.
Another high pressure oil port (the second oil outlet 23), the i.e. high pressure oil port close to mounting flange face in duplex gear pump 2
It is connected with the multi-way valve oil inlet 41 of hydraulic multitandem valve 4, two multi-way valve working oils on one valve block of centre of hydraulic multitandem valve 4
Mouthfuls 43, in Fig. 2 label be, B1 connection a pair of quick-release connector 7, the hydraulic reversing plough etc. of the quick-release connector 7 and user configuration
Agricultural machinery and implement connection, constitutes hydraulic circuit；Two multi-way valve actuator ports 43 on another valve block, in Fig. 2 label for
A2, B2, which connect a pair of of quick-release connector 7, also can connect other equipments.
The distributor oil inlet of the multi-way valve oil outlet 44 of hydraulic multitandem valve 4 and the distributor 82 on half separated type lifter 8
Mouth 821 connects, and when 4 spool of hydraulic multitandem valve is located at middle position (see Fig. 2), the high-voltage oil liquid that duplex gear pump 2 provides is passed through
The distributor oil inlet 821 of direct distributor 82 after hydraulic multitandem valve 4, hydraulic oil enter lift cylinder 81 by internal galleries
Cavity of resorption pushes piston rod mobile, and then promotes rear equipment.When two two-way valve blocks in distributor 82 are located at shown by Fig. 2
Position when, high-voltage oil liquid provided by duplex gear pump 2 directly returns the fuel tank 1 in half separated type lifter 8, lift cylinder 81
The hydraulic oil of cavity of resorption also returns in fuel tank 1 by one-way throttle valve 9.
The hydraulic pipeline that the present invention passes through fuel tank 1, duplex gear pump 2, fluid-link steering assembly 3 and each Hydraulic Elements of connection
5 one closed hydraulic steering circui of composition, i.e. hydraulic oil successively pass through duplex gear pump 2, fluid-link steering assembly 3 from fuel tank 1,
And fuel tank 1 is back to by fluid-link steering assembly 3；It is each hydraulic by fuel tank 1, duplex gear pump 2, hydraulic multitandem valve 4 and connection
The hydraulic pipeline 5 of element forms a closed hydraulic output loop, i.e., hydraulic oil from fuel tank 1 successively by duplex gear pump 2,
Hydraulic multitandem valve 4, and fuel tank 1 is back to by hydraulic multitandem valve 4.The hydraulic system assembly connected by above-mentioned design, that is, pass through
Hydraulic steering circui and hydraulic output loop share a fuel tank 1 and a duplex gear pump 2, so that by traditional fluid-link steering
System and hydraulic output system are improved to a hydraulic system assembly in parallel by two independent hydraulic systems, and optimization reduces
Independent fluid-link steering fuel tank and independence in conventional hydraulic.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (2)
1. a kind of hydraulic system assembly, which is characterized in that the hydraulic system assembly include fuel tank (1), duplex gear pump (2),
Fluid-link steering assembly (3), hydraulic multitandem valve (4) and hydraulic pipeline (5), wherein the fuel tank (1) passes through the hydraulic pipeline
(5) it is connect with the duplex gear pump (2), the duplex gear pump (2) passes through the hydraulic pipeline (5) and the fluid-link steering
Assembly (3) connection, the fluid-link steering assembly (3) is connect by the hydraulic pipeline (5) with the fuel tank (1), to form liquid
Pressure turns to circuit；The duplex gear pump (2) is also connect by the hydraulic pipeline (5) with the hydraulic multitandem valve (4), described
Hydraulic multitandem valve (4) is connect by the hydraulic pipeline (5) with the fuel tank (1), to form hydraulic output loop, the duplex
Gear pump (2) includes inlet port (21), the first oil outlet (22) and the second oil outlet (23), and the inlet port (21) is located at described
The bottom of duplex gear pump (2), first oil outlet (22) and second oil outlet (23) are located at the duplex gear pump
(2) top, the inlet port (21) is connected to first oil outlet (22) and second oil outlet (23) respectively, described
First oil outlet (22) is connect by the hydraulic pipeline (5) with the fluid-link steering assembly (3), second oil outlet (23)
It is connect by the hydraulic pipeline (5) with the hydraulic multitandem valve (4), the fluid-link steering assembly (3) includes hydro-steering
Device (31) and steering cylinder mechanism (32), the all-hydraulic steering gear (31) include turning to oil inlet (311), turning to oil return opening
(312) and two steering actuator ports (313), the steering oil inlet (311) pass through the hydraulic pipeline (5) and described first
Oil outlet (22) connection, the steering oil return opening (312) are connect by the hydraulic pipeline (5) with the fuel tank (1), and described turn
It include two steering hydraulic chambers (321) to oil cylinder mechanism (32), two steering actuator ports (313) pass through the liquid respectively
Pressure pipeline (5) is connected to two steering hydraulic chambers (321), and the hydraulic system assembly further includes oil-suction oil filter (6), described
Oil-suction oil filter (6) passes through the hydraulic pipeline (5) difference between the fuel tank (1) and the duplex gear pump (2)
Be connected to the fuel tank (1) and the inlet port (21), in which: the hydraulic multitandem valve (4) include multi-way valve oil inlet (41),
Multi-way valve oil return opening (42) and multiple multi-way valve actuator ports (43), the multi-way valve oil inlet (43) pass through the hydraulic tube
Road (5) is connect with second oil outlet (23), and the multi-way valve oil return opening (42) passes through the hydraulic pipeline (5) and the oil
Case (1) connection, each multi-way valve actuator port (43) are connected with quick-release connector (7)；The quick-release connector (7) passes through described
Hydraulic pipeline (5) is connect with the multi-way valve actuator port (43)；The hydraulic system assembly further includes half separated type lifter
(8), the half separated type lifter (8) includes lift cylinder (81) and distributor (82), and the lift cylinder (81) includes mentioning
Oil-lifting jar oil inlet (811) and lift cylinder oil outlet (812), the distributor (82) include distributor oil inlet (821) and
Distributor oil outlet (822), the hydraulic multitandem valve (4) further include multi-way valve oil outlet (44), the distributor oil inlet
(821) it is connect by the hydraulic pipeline (5) with the multi-way valve oil outlet (44), the distributor oil outlet (822) passes through
The hydraulic pipeline (5) connect with the lift cylinder oil inlet (811), and the lift cylinder oil outlet (812) passes through described
Hydraulic pipeline (5) is connected to the fuel tank (1)；Being connected at the lift cylinder oil inlet (812) can be with the hydraulic tube
The seal nipple that road (5) is detachably connected；It is described hydraulic between the lift cylinder oil outlet (812) and the fuel tank (1)
Pipeline (5) is equipped with one-way throttle valve (9).
2. a kind of tractor, which is characterized in that the tractor includes hydraulic system assembly according to claim 1.
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| CN105937511B true CN105937511B (en) | 2019-02-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113002639A (en) * | 2021-03-22 | 2021-06-22 | 烟台文进智能装备有限公司 | Tractor capable of driving in two directions and hitching and pushing agricultural implements |
| 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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| CN105937511A (en) | 2016-09-14 |
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