CN108443253A - A kind of adjustable crawler tractor hydraulic system of hilly and mountainous land posture - Google Patents
A kind of adjustable crawler tractor hydraulic system of hilly and mountainous land posture Download PDFInfo
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- CN108443253A CN108443253A CN201810423318.9A CN201810423318A CN108443253A CN 108443253 A CN108443253 A CN 108443253A CN 201810423318 A CN201810423318 A CN 201810423318A CN 108443253 A CN108443253 A CN 108443253A
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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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- Lifting Devices For Agricultural Implements (AREA)
Abstract
The invention belongs to technical field of hydraulic pressure, and in particular to a kind of adjustable crawler tractor hydraulic system of hilly and mountainous land posture.The invention mainly comprises：Pressure gauge, engine, gear pump, filter, fuel tank, 2/2-way electromagnetic relief valve, check valve, sequence valve, left side turns to solenoid valve, left side hydraulic steering cylinder, right hand steering hydraulic cylinder, right hand steering solenoid valve, left side leveling hydraulic cylinder, left side leveling one-way speed-regulating valve one, left side leveling one-way speed-regulating valve two, left side leveling solenoid valve, right side leveling hydraulic cylinder, right side leveling one-way speed-regulating valve one, right side leveling one-way speed-regulating valve two, right side leveling solenoid valve, fore-and-aft leveling hydraulic cylinder one, fore-and-aft leveling hydraulic cylinder two, flow divider, fore-and-aft leveling one-way speed-regulating valve one, fore-and-aft leveling one-way speed-regulating valve two, fore-and-aft leveling solenoid valve, trifilar suspension lifting hydraulic cylinder, promote one-way speed-regulating valve one, land one-way speed-regulating valve two, trifilar suspension promotes solenoid valve, pose adjustment hydraulic cylinder etc..
Description
Technical field
The invention belongs to technical field of hydraulic pressure, and in particular to a kind of adjustable crawler tractor hydraulic pressure of hilly and mountainous land posture
System.
Background technology
China is vast in territory, and wherein hills and mountainous region area is vast, this kind of area is with a varied topography, the gradient is precipitous, road surface not
It is regular, when agricultural traction engine is in this area's operation, due to the sidesway of center of gravity, causes both sides track adhesion different, easily send out
The raw danger tumbled.In recent years, the agricultural crawler tractor of the support with country to agriculture field, China is quickly grown.But
It is that the job requirements on hills, mountainous region area are met at present there is no suitable crawler tractor for hilly and mountainous land area.Cause
This, it is dilatory there is an urgent need to develop a kind of hills, simple, safe and reliable adjustable crawler belt of posture of manipulation in mountainous region of being adapted to
Machine improves the level of farming mechanization in China's hilly and mountainous land area.
Since the adjustable mountainous region crawler tractor of posture is complicated, the adjustment of simple mechanical mechanism at present cannot achieve
The pose adjustment of tractor meets the requirement of hillside tractor operation.And hydraulic transmission has compared with mechanical driving device
Have that inertia is small, be active in one's movements, arranges the advantages of convenient, manoeuvrable, is easy to implement the pose adjustment of tractor.Therefore, urgently
It needs to invent a kind of adjustable crawler tractor hydraulic system of hilly and mountainous land posture, meets the adjustable mountainous region crawler belt of posture and drag
The requirement of machine drawing farm work.
Invention content
It is an object of the invention to be directed to the adjustable crawler tractor pure mechanic structure of posture to cannot achieve pose adjustment
The problem of, a kind of hydraulic system for the adjustable crawler tractor of hilly and mountainous land posture meeting mountainous region job requirements is provided, it is real
Pose adjustment, steering and the promotion of trifilar suspension of existing mountainous region crawler tractor, improve the safety of mountainous region crawler tractor
And reliability.
To achieve the above object, the present invention adopts the following technical scheme that：
The present invention provides a kind of adjustable crawler tractor hydraulic systems of hilly and mountainous land posture, are used for tractor posture
Adjustment, steering and farm implements operation.
A kind of adjustable crawler tractor hydraulic system of hilly and mountainous land posture comprising：Engine, gear pump, filtering
Device, fuel tank, pressure gauge, 2/2-way electromagnetic relief valve, check valve, sequence valve, left side turn to solenoid valve, left side steering hydraulic
Cylinder, right hand steering hydraulic cylinder, right hand steering solenoid valve, left side leveling hydraulic cylinder, left side leveling one-way speed-regulating valve one, left side leveling
One-way speed-regulating valve two, left side leveling solenoid valve, right side leveling hydraulic cylinder, right side leveling one-way speed-regulating valve one, right side leveling are unidirectional
Speed governing valve two, right side leveling solenoid valve, fore-and-aft leveling hydraulic cylinder one, fore-and-aft leveling hydraulic cylinder two, flow divider, fore-and-aft leveling are unidirectional
Speed governing valve one, fore-and-aft leveling one-way speed-regulating valve two, fore-and-aft leveling solenoid valve, trifilar suspension lifting hydraulic cylinder, trifilar suspension are unidirectional
Speed governing valve one, trifilar suspension one-way speed-regulating valve two, trifilar suspension solenoid valve, pose adjustment hydraulic cylinder, the unidirectional speed governing of pose adjustment
Valve one, pose adjustment one-way speed-regulating valve two, pose adjustment solenoid valve, quick coupling one, quick coupling two, matched farm tool are unidirectionally adjusted
Fast valve one, matched farm tool one-way speed-regulating valve two, matched farm tool solenoid valve；
The power taking mouth of gear pump power intake and engine connects, and oil inlet connect with filter, oil outlet and unidirectionally
Valve connects；Between gear pump and check valve, left bypass is connect with 2/2-way electromagnetic relief valve input terminal, right bypass and pressure gauge
Connection.
Check valve turns to solenoid valve, right hand steering solenoid valve, sequence valve connection respectively at left side.Sequence valve and left side leveling
Solenoid valve, right side leveling solenoid valve, fore-and-aft leveling solenoid valve, trifilar suspension solenoid valve, pose adjustment solenoid valve, matched farm tool electricity
Magnet valve connects.
Left side turns to solenoid valve and is connect with left side hydraulic steering cylinder, and left side hydraulic steering cylinder is single-action hydraulic cylinder.
Right hand steering solenoid valve is connect with right hand steering hydraulic cylinder, and right hand steering hydraulic cylinder is single-action hydraulic cylinder.
Left side turns to solenoid valve and right hand steering solenoid valve is two-bit triplet solenoid directional control valve.
The A mouths of left side leveling solenoid valve are connect with left side leveling one-way speed-regulating valve one, left side leveling one-way speed-regulating valve one with
The rodless cavity of left side leveling hydraulic cylinder connects, and the rod chamber of left side leveling hydraulic cylinder is connect with left side leveling one-way speed-regulating valve two,
Left side leveling one-way speed-regulating valve two is connect with the B mouths of left side leveling solenoid valve.
The A mouths of right side leveling solenoid valve are connect with right side leveling one-way speed-regulating valve one, right side leveling one-way speed-regulating valve one with
The rodless cavity of right side leveling hydraulic cylinder connects, and the rod chamber of right side leveling hydraulic cylinder is connect with right side leveling one-way speed-regulating valve two,
Right side leveling one-way speed-regulating valve two is connect with the B mouths of right side leveling solenoid valve.
The A mouths of fore-and-aft leveling solenoid valve are connect with fore-and-aft leveling one-way speed-regulating valve one, fore-and-aft leveling one-way speed-regulating valve one with
Flow divider connects, and flow divider is connect respectively at the rodless cavity of fore-and-aft leveling hydraulic cylinder one, fore-and-aft leveling hydraulic cylinder two；It is longitudinal to adjust
Flat hydraulic cylinder one, fore-and-aft leveling hydraulic cylinder two rod chamber connect with fore-and-aft leveling one-way speed-regulating valve two, fore-and-aft leveling is unidirectionally adjusted
Fast valve two is connect with the B of fore-and-aft leveling solenoid valve mouths.
A mouthfuls of trifilar suspension solenoid valve is connect with trifilar suspension one-way speed-regulating valve one, trifilar suspension one-way speed-regulating valve one and three
The rodless cavity connection of point suspension lifting hydraulic cylinder, rod chamber and the trifilar suspension one-way speed-regulating valve two of trifilar suspension lifting hydraulic cylinder
Connection, trifilar suspension one-way speed-regulating valve two are connect with the B of trifilar suspension solenoid valve mouths.
A mouthfuls of pose adjustment solenoid valve is connect with pose adjustment one-way speed-regulating valve one, pose adjustment one-way speed-regulating valve one and appearance
State adjusts the connection of hydraulic cylinder rodless cavity, and the rod chamber of pose adjustment hydraulic cylinder is connect with pose adjustment one-way speed-regulating valve two, posture
Adjustment one-way speed-regulating valve two is connect with the B of pose adjustment solenoid valve mouths.
A mouthfuls of matched farm tool solenoid valve is connect with matched farm tool one-way speed-regulating valve one, matched farm tool one-way speed-regulating valve one with it is fast
Quick coupling one connects；Matched farm tool solenoid valve connects B and matched farm tool one-way speed-regulating valve two, matched farm tool one-way speed-regulating valve two with
Quick coupling two connects.
Left side leveling solenoid valve, right side leveling solenoid valve, fore-and-aft leveling solenoid valve, trifilar suspension solenoid valve, pose adjustment
Solenoid valve, matched farm tool solenoid valve are O-shaped middle position three-position four-way electromagnetic directional valve.
The beneficial effects of the present invention are：
The present invention is a kind of adjustable crawler tractor hydraulic system of hilly and mountainous land posture, by hydraulic system oil circuit
Solenoid valve control, realize tractor posture adjustment, steering and farm implements operation.
Description of the drawings
Fig. 1 is the schematic diagram of the adjustable crawler tractor hydraulic system of hilly and mountainous land posture of the present invention
Wherein reference numeral is：
1, pressure gauge；2, engine；3, gear pump；4, filter；5, fuel tank；6,2/2-way electromagnetic relief valve；7, single
To valve；8, sequence valve；9, left side turns to solenoid valve；10, left side hydraulic steering cylinder；11, right hand steering hydraulic cylinder；12, right side turns
To solenoid valve；13, left side leveling hydraulic cylinder；14, left side leveling one-way speed-regulating valve one；15, left side leveling one-way speed-regulating valve two；
16, left side leveling solenoid valve；17, right side leveling hydraulic cylinder；18, right side leveling one-way speed-regulating valve one；19, right side leveling is unidirectionally adjusted
Fast valve two；20, right side leveling solenoid valve；21, fore-and-aft leveling hydraulic cylinder one；22, fore-and-aft leveling hydraulic cylinder two；23, flow divider；
24, fore-and-aft leveling one-way speed-regulating valve one；25, fore-and-aft leveling one-way speed-regulating valve two；26, fore-and-aft leveling solenoid valve；27, trifilar suspension
Lifting hydraulic cylinder；28, one-way speed-regulating valve one is promoted；29, land one-way speed-regulating valve two；30, trifilar suspension promotes solenoid valve；31、
Pose adjustment hydraulic cylinder；32, pose adjustment one-way speed-regulating valve one；33, pose adjustment one-way speed-regulating valve two；34, pose adjustment electricity
Magnet valve；35, quick coupling one；36, quick coupling two；37, matched farm tool one-way speed-regulating valve one；38, the unidirectional speed governing of matched farm tool
Valve two；39, matched farm tool solenoid valve
Specific implementation mode：
The present invention provides a kind of adjustable crawler tractor hydraulic systems of hilly and mountainous land posture.Below in conjunction with the accompanying drawings and
Clear, complete description that specific implementation mode technical solution in the embodiment of the present invention carries out, illustrates in the following description
Many details, in order to fully understanding the present invention.
As shown in Figure 1, a kind of adjustable crawler tractor hydraulic system of hilly and mountainous land posture comprising：Engine 2,
Gear pump 3, filter 4, fuel tank 5, pressure gauge 1,2/2-way electromagnetic relief valve 6, check valve 7, sequence valve 8, left side turn to electricity
Magnet valve 9, left side hydraulic steering cylinder 10, right hand steering hydraulic cylinder 11, right hand steering solenoid valve 12, left side leveling hydraulic cylinder 13, a left side
Side leveling one-way speed-regulating valve 1, left side leveling one-way speed-regulating valve 2 15, left side leveling solenoid valve 16, right side leveling hydraulic cylinder
17, right side leveling one-way speed-regulating valve 1, right side leveling one-way speed-regulating valve 2 19, right side leveling solenoid valve 20, fore-and-aft leveling liquid
Cylinder pressure 1, fore-and-aft leveling hydraulic cylinder 2 22, flow divider 23, fore-and-aft leveling one-way speed-regulating valve 1, the unidirectional speed governing of fore-and-aft leveling
Valve 2 25, fore-and-aft leveling solenoid valve 26, trifilar suspension lifting hydraulic cylinder 27, trifilar suspension one-way speed-regulating valve 1, trifilar suspension
One-way speed-regulating valve 2 29, trifilar suspension solenoid valve 30, pose adjustment hydraulic cylinder 31, pose adjustment one-way speed-regulating valve 1, posture
Adjustment one-way speed-regulating valve 2 33, pose adjustment solenoid valve 34, quick coupling 1, quick coupling 2 36, matched farm tool are unidirectionally adjusted
Fast valve 1, matched farm tool one-way speed-regulating valve 2 38, matched farm tool solenoid valve 39；
3 power intake of gear pump is connect with the power taking mouth of engine 2, and 3 oil inlet of gear pump is connect with filter 4, is gone out
Hydraulic fluid port is connect with check valve 7；Between gear pump 3 and check valve 7, left bypass is connect with 6 input terminal of 2/2-way electromagnetic relief valve,
Right bypass is connect with pressure gauge 1.The purpose of connection pressure gauge 1 is to read hydraulic system working pressure for convenience.
6 output end of 2/2-way electromagnetic relief valve is connect with fuel tank 5.Because of hillside tractor pose adjustment and steering etc.
Work, does not need to work for a long time, discharge time is long, and therefore, in order to reduce system heat generation amount, overflow valve is 2/2-way
Electromagnetic relief valve 6, electromagnet power-off, system unloaded, electromagnet are powered, internal control load.
Check valve 7 turns to solenoid valve 9, right hand steering solenoid valve 12, sequence valve 8 respectively at left side and connects.Sequence valve 8 and a left side
Side leveling solenoid valve 16, right side leveling solenoid valve 20, fore-and-aft leveling solenoid valve 26, trifilar suspension solenoid valve 30, pose adjustment electricity
Magnet valve 34, matched farm tool solenoid valve 39 connect.The purpose that check valve 7 is arranged is that check valve 7 can be loaded in system pressure and be risen suddenly
When high or power failure, the oil of hydraulic system can be prevented to flow backwards and damage hydraulic pump.
Sequence valve 8 is guide type sequence valve, and ON operation pressure is 7MPa.
Left side turns to solenoid valve 9 and is connect with left side hydraulic steering cylinder 10, and left side hydraulic steering cylinder 10 is single-action hydraulic cylinder,
Left side hydraulic steering cylinder 10 turns to the left for realizing tractor.
Right hand steering solenoid valve 12 is connect with right hand steering hydraulic cylinder 11, and right hand steering hydraulic cylinder 11 is single-acting hydraulic
Cylinder, right hand steering hydraulic cylinder 11 turn to the right for realizing tractor.
Left side turns to solenoid valve 9 and right hand steering solenoid valve 12 is two-bit triplet solenoid directional control valve.
The A mouths of left side leveling solenoid valve 16 are connect with left side leveling one-way speed-regulating valve 1, left side leveling one-way speed-regulating valve
One 14 connect with the rodless cavity of left side leveling hydraulic cylinder 13, rod chamber and the unidirectional speed governing of left side leveling of left side leveling hydraulic cylinder 13
Valve 2 15 connects, and left side leveling one-way speed-regulating valve 2 15 is connect with the B mouths of left side leveling solenoid valve 16.
The A mouths of right side leveling solenoid valve 20 are connect with right side leveling one-way speed-regulating valve 1, right side leveling one-way speed-regulating valve
One 18 connect with the rodless cavity of right side leveling hydraulic cylinder 17, rod chamber and the unidirectional speed governing of right side leveling of right side leveling hydraulic cylinder 17
Valve 2 15 connects, and right side leveling one-way speed-regulating valve 2 15 is connect with the B mouths of right side leveling solenoid valve 20.
The A mouths of fore-and-aft leveling solenoid valve 26 are connect with fore-and-aft leveling one-way speed-regulating valve 1, fore-and-aft leveling one-way speed-regulating valve
One 24 connect with flow divider 23, and flow divider 23 is respectively at the nothing with fore-and-aft leveling hydraulic cylinder 1, fore-and-aft leveling hydraulic cylinder 2 22
Rod cavity connects；Fore-and-aft leveling hydraulic cylinder 1, the rod chamber of fore-and-aft leveling hydraulic cylinder 2 22 and fore-and-aft leveling one-way speed-regulating valve two
25 connections, fore-and-aft leveling one-way speed-regulating valve 2 25 are connect with the B of fore-and-aft leveling solenoid valve 26 mouths.
The A mouths of trifilar suspension solenoid valve 30 are connect with trifilar suspension one-way speed-regulating valve 1, trifilar suspension one-way speed-regulating valve
One 28 connect with the rodless cavity of trifilar suspension lifting hydraulic cylinder 27, the rod chamber and trifilar suspension of trifilar suspension lifting hydraulic cylinder 27
One-way speed-regulating valve 2 29 connects, and trifilar suspension one-way speed-regulating valve 2 29 is connect with the B of trifilar suspension solenoid valve 30 mouths.
The A mouths of pose adjustment solenoid valve 34 are connect with pose adjustment one-way speed-regulating valve 1, pose adjustment one-way speed-regulating valve
One 32 connect with 31 rodless cavity of pose adjustment hydraulic cylinder, rod chamber and the pose adjustment one-way speed-regulating valve of pose adjustment hydraulic cylinder 31
2 33 connections, pose adjustment one-way speed-regulating valve 2 33 are connect with the B of pose adjustment solenoid valve 34 mouths.
The A mouths of matched farm tool solenoid valve 39 are connect with matched farm tool one-way speed-regulating valve 1, matched farm tool one-way speed-regulating valve
One 37 connect with quick coupling 1；39B mouthfuls of matched farm tool solenoid valve and matched farm tool one-way speed-regulating valve 2 38, matched farm tool list
It is connect to speed governing valve 2 38 with quick coupling 2 36.The purpose that quick coupling is set be for convenience quickly with the agriculture that needs hydraulic pressure
Tool connection.
Left side leveling solenoid valve 16, right side leveling solenoid valve 20, fore-and-aft leveling solenoid valve 26, trifilar suspension solenoid valve 30,
Pose adjustment solenoid valve 34, matched farm tool solenoid valve 39 are O-shaped middle position three-position four-way electromagnetic directional valve.
The course of work：
System starts：2/2-way electromagnetic relief valve obtain it is electric, start engine make system to drive gear pump to rotate
Pressurize.
Left and right turn and braking：Left side turn to solenoid valve obtain it is electric, fluid enter left side hydraulic steering cylinder, realize left side turn to
Hydraulic cylinder acts, and to drive left side steering mechanism, realizes and is turned on the left of tractor；Right hand steering solenoid valve obtain it is electric, fluid into
Enter right hand steering hydraulic cylinder, realize the action of right hand steering hydraulic cylinder, to drive right hand steering mechanism, realizes and turn on the right side of tractor
To；Left side turns to solenoid valve and right hand steering solenoid valve simultaneously must be electric, to realize left side hydraulic steering cylinder and right hand steering liquid
Cylinder pressure acts simultaneously, realizes that left side steering mechanism and right hand steering mechanism act simultaneously, realizes tractor braking；
Left side leveling and right side leveling：Electric or right side is obtained on the left of left side leveling solenoid valve obtains electric, realization left side leveling liquid
Cylinder pressure acts, and to realize levelling mechanism action on the left of tractor, realizes the adjustment of posture on the left of tractor；Right side leveling electromagnetism
Electric or right side is obtained on the left of valve obtains electric, leveling hydraulic cylinder action on the right side of realization, to realize, levelling mechanism acts on the right side of tractor,
Realize the adjustment of posture on the right side of tractor；
Fore-and-aft leveling：Electric, realization fore-and-aft leveling hydraulic pressure is obtained by adjusting electric or right side is obtained on the left of fore-and-aft leveling solenoid valve
Cylinder one and fore-and-aft leveling hydraulic cylinder two act simultaneously, to tractor fore-and-aft leveling mechanism action, realize tractor longitudinal attitude
Adjustment；
Trifilar suspension：Electric, realization trifilar suspension promotion is obtained by adjusting electric or right side is obtained on the left of trifilar suspension solenoid valve
Hydraulic cylinder acts, and to which tractor hoisting mechanism acts, realizes the adjustment of tractor farm tools height；
Pose adjustment：Electric, realization tractor pose adjustment machine is obtained by obtaining electric or right side on the left of pose adjustment solenoid valve
The action of structure keeps stable working to which during tractor pose adjustment, farm implements keep profiling with ground always.
The structure and working principle of the present invention is explained with specific embodiment above, the invention is not limited in the above realities
Apply example, according to above-mentioned description, all within the spirits and principles of the present invention made by it is any modification, replace and improve
Deng should all be included in the protection scope of the present invention.
Claims (1)
1. a kind of adjustable crawler tractor hydraulic system of hilly and mountainous land posture comprising：Engine, gear pump, filter,
Fuel tank, pressure gauge, 2/2-way electromagnetic relief valve, check valve, sequence valve, left side turn to solenoid valve, left side hydraulic steering cylinder, the right side
Side hydraulic steering cylinder, right hand steering solenoid valve, left side leveling hydraulic cylinder, left side leveling one-way speed-regulating valve one, left side leveling are unidirectional
Speed governing valve two, left side leveling solenoid valve, right side leveling hydraulic cylinder, right side leveling one-way speed-regulating valve one, the unidirectional speed governing of right side leveling
Valve two, right side leveling solenoid valve, fore-and-aft leveling hydraulic cylinder one, fore-and-aft leveling hydraulic cylinder two, flow divider, the unidirectional speed governing of fore-and-aft leveling
Valve one, fore-and-aft leveling one-way speed-regulating valve two, fore-and-aft leveling solenoid valve, trifilar suspension lifting hydraulic cylinder, the unidirectional speed governing of trifilar suspension
Valve one, trifilar suspension one-way speed-regulating valve two, trifilar suspension solenoid valve, pose adjustment hydraulic cylinder, pose adjustment one-way speed-regulating valve one,
Pose adjustment one-way speed-regulating valve two, pose adjustment solenoid valve, quick coupling one, quick coupling two, matched farm tool one-way speed-regulating valve
One, matched farm tool one-way speed-regulating valve two, matched farm tool solenoid valve；
It is characterized in that：
The power taking mouth of the gear pump power intake and engine connects, and oil inlet connect with filter, oil outlet and unidirectionally
Valve connects, and between gear pump and check valve, left bypass is connect with 2/2-way electromagnetic relief valve input terminal, right bypass and pressure gauge
Connection；
The check valve turns to solenoid valve, right hand steering solenoid valve, sequence valve connection respectively at left side；Sequence valve and left side leveling
Solenoid valve, right side leveling solenoid valve, fore-and-aft leveling solenoid valve, trifilar suspension solenoid valve, pose adjustment solenoid valve, matched farm tool electricity
Magnet valve connects；
The left side turns to solenoid valve and is connect with left side hydraulic steering cylinder, and left side hydraulic steering cylinder is single-action hydraulic cylinder；
The right hand steering solenoid valve is connect with right hand steering hydraulic cylinder, and right hand steering hydraulic cylinder is single-action hydraulic cylinder；
The left side turns to solenoid valve and right hand steering solenoid valve is two-bit triplet solenoid directional control valve；
The A mouths of the left side leveling solenoid valve are connect with left side leveling one-way speed-regulating valve one, left side leveling one-way speed-regulating valve one with
The rodless cavity of left side leveling hydraulic cylinder connects, and the rod chamber of left side leveling hydraulic cylinder is connect with left side leveling one-way speed-regulating valve two,
Left side leveling one-way speed-regulating valve two is connect with the B mouths of left side leveling solenoid valve；
The A mouths of the right side leveling solenoid valve are connect with right side leveling one-way speed-regulating valve one, right side leveling one-way speed-regulating valve one with
The rodless cavity of right side leveling hydraulic cylinder connects, and the rod chamber of right side leveling hydraulic cylinder is connect with right side leveling one-way speed-regulating valve two,
Right side leveling one-way speed-regulating valve two is connect with the B mouths of right side leveling solenoid valve；
The A mouths of the fore-and-aft leveling solenoid valve are connect with fore-and-aft leveling one-way speed-regulating valve one, fore-and-aft leveling one-way speed-regulating valve one with
Flow divider connects, and flow divider is connect respectively at the rodless cavity of fore-and-aft leveling hydraulic cylinder one, fore-and-aft leveling hydraulic cylinder two；It is longitudinal to adjust
Flat hydraulic cylinder one, fore-and-aft leveling hydraulic cylinder two rod chamber connect with fore-and-aft leveling one-way speed-regulating valve two, fore-and-aft leveling is unidirectionally adjusted
Fast valve two is connect with the B of fore-and-aft leveling solenoid valve mouths；
A mouthfuls of the trifilar suspension solenoid valve is connect with trifilar suspension one-way speed-regulating valve one, trifilar suspension one-way speed-regulating valve one and three
The rodless cavity connection of point suspension lifting hydraulic cylinder, rod chamber and the trifilar suspension one-way speed-regulating valve two of trifilar suspension lifting hydraulic cylinder
Connection, trifilar suspension one-way speed-regulating valve two are connect with the B of trifilar suspension solenoid valve mouths；
A mouthfuls of the pose adjustment solenoid valve is connect with pose adjustment one-way speed-regulating valve one, pose adjustment one-way speed-regulating valve one and appearance
State adjusts the connection of hydraulic cylinder rodless cavity, and the rod chamber of pose adjustment hydraulic cylinder is connect with pose adjustment one-way speed-regulating valve two, posture
Adjustment one-way speed-regulating valve two is connect with the B of pose adjustment solenoid valve mouths；
A mouthfuls of the matched farm tool solenoid valve is connect with matched farm tool one-way speed-regulating valve one, matched farm tool one-way speed-regulating valve one with it is fast
Quick coupling one connects；Matched farm tool solenoid valve connects B and matched farm tool one-way speed-regulating valve two, matched farm tool one-way speed-regulating valve two with
Quick coupling two connects；
The left side leveling solenoid valve, right side leveling solenoid valve, fore-and-aft leveling solenoid valve, trifilar suspension solenoid valve, pose adjustment
Solenoid valve, matched farm tool solenoid valve are O-shaped middle position three-position four-way electromagnetic directional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810423318.9A CN108443253A (en) | 2018-05-06 | 2018-05-06 | A kind of adjustable crawler tractor hydraulic system of hilly and mountainous land posture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810423318.9A CN108443253A (en) | 2018-05-06 | 2018-05-06 | A kind of adjustable crawler tractor hydraulic system of hilly and mountainous land posture |
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| Publication Number | Publication Date |
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| CN108443253A true CN108443253A (en) | 2018-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810423318.9A Pending CN108443253A (en) | 2018-05-06 | 2018-05-06 | A kind of adjustable crawler tractor hydraulic system of hilly and mountainous land posture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110741761A (en) * | 2019-11-05 | 2020-02-04 | 中联重机股份有限公司 | Intelligent electro-hydraulic lifting control device and method for paddy field agricultural machine |
| CN110745742A (en) * | 2019-09-16 | 2020-02-04 | 蚌埠市巨强机械液压油缸制造有限公司 | Bidirectional feeding and reversing and speed regulating method for pallet fork |
| CN111022399A (en) * | 2020-01-14 | 2020-04-17 | 郑州德威机械设备有限公司 | Hydraulic system of bituminous road pavement rolling machine |
-
2018
- 2018-05-06 CN CN201810423318.9A patent/CN108443253A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745742A (en) * | 2019-09-16 | 2020-02-04 | 蚌埠市巨强机械液压油缸制造有限公司 | Bidirectional feeding and reversing and speed regulating method for pallet fork |
| CN110741761A (en) * | 2019-11-05 | 2020-02-04 | 中联重机股份有限公司 | Intelligent electro-hydraulic lifting control device and method for paddy field agricultural machine |
| CN111022399A (en) * | 2020-01-14 | 2020-04-17 | 郑州德威机械设备有限公司 | Hydraulic system of bituminous road pavement rolling machine |
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Application publication date: 20180824 |
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| WD01 | Invention patent application deemed withdrawn after publication |