CN208816429U - A kind of crawler-type harvester hydraulic control system - Google Patents
A kind of crawler-type harvester hydraulic control system Download PDFInfo
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- CN208816429U CN208816429U CN201821481362.7U CN201821481362U CN208816429U CN 208816429 U CN208816429 U CN 208816429U CN 201821481362 U CN201821481362 U CN 201821481362U CN 208816429 U CN208816429 U CN 208816429U
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- valve
- control
- pressure
- oil
- reversal valve
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Abstract
A kind of crawler-type harvester hydraulic control system.Solving existing multi-way valve cannot achieve steering priority function, so that rice machine turns to insecure problem.It includes main oil inlet, oil return opening, control connection and work connection, work connection includes work reversal valve and actuator port, the control connection includes control reversal valve and pressure-gradient control valve, the control reversal valve has the first position at left position, second position when middle position, the third place when right position, the pressure-gradient control valve is in first position in control reversal valve, receive main inlet pressure oil when the third place and is exported respectively to control reversal valve and work reversal valve, the left side spring cavity of pressure-gradient control valve is in first position in control reversal valve, the right side control chamber of pressure oil and pressure-gradient control valve that control reversal valve oil outlet is chosen when the third place cooperates for controlling pressure-gradient control valve stem position.The advantages that the utility model has structure simple, easy to assembly, reliable in action, long service life.
Description
Technical field
The utility model relates to a kind of crawler-type harvesters, and in particular to a kind of crawler-type harvester hydraulic control system.
Background technique
Automatic harvester is that the particle of corn, rice, wheat is directly gathered in the machine to get off by one kind from bar.Domestic
Rice machine in crawler-type harvester mainly has four, the ceding of Taiwan, winder, steering, unloading bucket etc. movements, in actual use operating condition
In, need to carry out steering priority function.And the manual and electric control multi-way valve in applying at present all cannot achieve this function.Fig. 1 is
Existing manual rice machine principle, Fig. 2 are existing automatically controlled rice machine principle.Both working principles have the following problems: 1. ought turn
To when working at the same time with other movements, it is preferential to cannot achieve steering；2. automatically controlled steering needs manual throttle valve also to realize and turn to
Function；3. being all train, oil circuit loss in position is excessive in multi-way valve.
Utility model content
It cannot achieve steering priority function to solve existing multi-way valve in background technique, so that rice machine steering is insecure
Problem, the utility model provide a kind of crawler-type harvester hydraulic control system.
The technical solution of the utility model is: a kind of crawler-type harvester hydraulic control system, including main oil inlet, oil return
Mouth, control connection and at least one work connection, it includes work reversal valve and actuator port that each work, which joins, and the control connection includes
Reversal valve and pressure-gradient control valve are controlled, the main oil inlet is connected with pressure-gradient control valve oil inlet, control reversal valve oil inlet respectively, institute
The control reversal valve stated has the to be connected by pressure-gradient control valve with steering cylinder left oil inleting port in left position Shi Shi winner oil inlet
One position, Zhong Weishishi winner oil inlet with work connection in work reversal valve be connected the second position, You Weishishi winner
The third place that oil inlet is connected by pressure-gradient control valve with the right oil inlet of steering cylinder, the pressure-gradient control valve is at control reversal valve
Receive main inlet pressure oil when first position, the third place and is exported respectively to control reversal valve and work reversal valve, it is excellent
The left side spring cavity of first valve chooses the pressure of control reversal valve oil outlet when controlling reversal valve and being in first position, the third place
The right side control chamber of oil and pressure-gradient control valve cooperates for controlling pressure-gradient control valve stem position.
It further include unloading valve as a kind of improvement of the utility model, unloading valve oil inlet goes out with control reversal valve respectively
Hydraulic fluid port, pressure-gradient control valve oil outlet are connected, and unloading valve oil outlet is connected with oil return opening.
The unloading valve is two-position two-way electromagnetic directional valve as a further improvement of the utility model,.
It as a further improvement of the utility model, further include shuttle valve, the shuttle valve goes out for choosing control reversal valve
Hydraulic fluid port is to steering cylinder left oil inleting port pipeline, control reversal valve oil outlet to the high pressure between the right oil inlet pipeline of steering cylinder
Oil, and export to the left side spring cavity of pressure-gradient control valve.
It is equipped between shuttle valve oil outlet and oil return opening as a further improvement of the utility model, and turns to safety overflow valve.
Pressure-gradient control valve is equipped between the left side spring cavity and oil return opening of pressure-gradient control valve as a further improvement of the utility model, to pacify
Full overflow valve.
Main overflow valve is equipped between the main oil inlet and oil return opening as a further improvement of the utility model,.
Steering cylinder oil outlet is connected by controlling reversal valve with oil return opening as a further improvement of the utility model,
It connects.
Electric proportional pressure control valve is equipped between steering cylinder oil outlet and oil return opening as a further improvement of the utility model,
Or electric proportional throttle valve.
The control reversal valve is manual three seven logical reversal valves or electric ratio as a further improvement of the utility model,
Three seven logical reversal valves of example.
The utility model has the beneficial effects that can be by choosing the pressure oil and pressure-gradient control valve of control reversal valve oil outlet
Left side spring cavity controls the cracking pressure of steering cylinder, by the setting to reversal valve and pressure-gradient control valve, when steering cylinder and work
Join other movements when working at the same time, may be implemented to turn to it is preferential so that product turn to it is reliable.The utility model also has structure simple
It is single, it is easy to assembly, the advantages that reliable in action, long service life.
Detailed description of the invention
Attached drawing 1 is the hydraulic schematic diagram of existing manual rice machine.
Attached drawing 2 is the hydraulic schematic diagram of existing automatically controlled rice machine.
Attached drawing 3 is the hydraulic schematic diagram of the utility model embodiment one.
Attached drawing 4 is the hydraulic schematic diagram of the utility model embodiment two.
Attached drawing 5 is the hydraulic schematic diagram of the utility model embodiment three.
Attached drawing 6 is the hydraulic schematic diagram in attached drawing 3 at pressure-gradient control valve.
In figure, 1, control connection；2, work connection；21, work reversal valve；22, actuator port；3, reversal valve is controlled；4, preferential
Valve；41, pressure-gradient control valve oil inlet；42, the left side spring cavity of pressure-gradient control valve；43, the right side control chamber of pressure-gradient control valve；44, pressure-gradient control valve is fuel-displaced
Mouthful；5, unloading valve；6, shuttle valve；7, safety overflow valve is turned to；8, pressure-gradient control valve safety overflow valve；9, main overflow valve；10, electric ratio is overflow
Flow valve；A1, steering cylinder left oil inleting port；The right oil inlet of B1, steering cylinder；C1, steering cylinder oil outlet；P, main oil inlet；T,
Oil return opening.
Specific embodiment
The utility model embodiment is described further with reference to the accompanying drawing:
Embodiment one, two, three: as shown in Fig. 3 combination Fig. 4,5,6, a kind of crawler-type harvester hydraulic control system, including
Main oil inlet P, oil return inlet T, control connection 1 and at least one work connection 2, specifically, work joins setting parallel with one another, structure letter
It is single, it is easy to assembly, and connection number can be added or reduced according to operating condition, range of fit is wide, and is convenient for direct off-load, oil circuit pressure damage
It loses low.Each work connection includes work reversal valve 21 and actuator port 22, and the control connection 1 includes control reversal valve 3 and excellent
First valve 4, the main oil inlet P are connected with pressure-gradient control valve oil inlet 41, control reversal valve oil inlet respectively, and the control is changed
There is first to be connected by pressure-gradient control valve 4 with steering cylinder left oil inleting port A1 in left position Shi Shi winner oil inlet P to valve 3
It sets, the second position that Zhong Weishishi winner oil inlet P is connected with the work reversal valve 21 in work connection 2, You Weishishi winner
The third place that oil inlet P is connected by pressure-gradient control valve 4 with the right oil inlet A2 of steering cylinder, the pressure-gradient control valve 4 are changed in control
Receive main oil inlet P pressure oil when being in first position, the third place to valve 3 and is exported respectively to control reversal valve 3 and work
The left side spring cavity 42 of reversal valve 21, pressure-gradient control valve (is mentioned excellent in the left side spring cavity of pressure-gradient control valve, the right side control chamber of pressure-gradient control valve
It is convenient to be intended merely to description, rather than limits its specific location for the left and right side of first valve, controls left position, the right position of reversal valve
Also be intended merely to description facilitate it is clear, referring specifically to attached drawing 3 and 6, similarly hereinafter.) control reversal valve be in first position, third position
The right side control chamber 43 of pressure oil and pressure-gradient control valve that control reversal valve oil outlet is chosen when setting cooperates for controlling pressure-gradient control valve
Stem position.When control reversal valve 3 is in first position, the third place, main oil inlet cannot directly pass through control reversal valve
It is connected with work reversal valve.Specifically, the control reversal valve 3 is manual three seven logical reversal valves or electric ratio three
Seven logical reversal valves.More specifically, what the left side spring cavity of pressure-gradient control valve chose is after controlling reversal valve valve stem orifice
Pressure oil, the throttle orifice can be arranged directly on control reversal valve valve rod, can also be separately provided so that controlling reversal valve valve
Bar only has commutation effect；What the right side control chamber of pressure-gradient control valve was chosen is the pressure oil of pressure-gradient control valve oil outlet.Specifically, institute
The pressure-gradient control valve stated is two position three-way valve, when steering cylinder and other work connection have movement, by taking control reversal valve
The pressure oil of oil outlet and the right side control chamber 43 of pressure-gradient control valve cooperate for controlling pressure-gradient control valve stem position, i.e., only need to set
The left side spring cavity inner spring power for determining pressure-gradient control valve, determines pressure difference by spring force, just commutates more than pressure difference, can to system into
Row is accurately controlled, so that system can reliably realize preferential steering at work.The utility model can be changed by choosing control
To the cracking pressure of the left side spring cavity control steering cylinder of the pressure oil and pressure-gradient control valve of valve oil outlet, by reversal valve and excellent
The setting of first valve may be implemented to turn to preferentially when steering cylinder and work, which join other movements, to be worked at the same time, so that product turns to
Reliably.The advantages that the utility model also has structure simple, easy to assembly, reliable in action, long service life.The utility model can
To realize complete electric proportional control, manual throttle valve is not needed.
The utility model further includes unloading valve 5, and unloading valve oil inlet is fuel-displaced with control reversal valve oil outlet, pressure-gradient control valve respectively
Mouth 44 is connected, and unloading valve oil outlet is connected with oil return opening.Specifically, the unloading valve is bi-bit bi-pass electromagnetic switch
Valve.So that hydraulic oil directly joins direct off-load from control in parallel system, control reversal valve is in middle position for the setting of unloading valve
When system, oil circuit pressure loss it is low.
The utility model further includes shuttle valve 6, and the shuttle valve is for choosing control 3 oil outlet of reversal valve to a steering cylinder left side
Oil inlet A1 pipeline, control reversal valve oil outlet to the high pressure oil between the right oil inlet A2 pipeline of steering cylinder, and export to excellent
The left side spring cavity 42 of first valve.
Embodiment two: it is equipped between 6 oil outlet of shuttle valve and oil return inlet T and turns to safety overflow valve 7.Turn to safety overflow valve
Setting, which prevents from turning to, to be impacted, and steering cylinder is protected.The difference of embodiment two and embodiment one is to increase steering safety overflow valve
7。
Pressure-gradient control valve safety overflow valve 8 is equipped between the left side spring cavity and oil return opening of pressure-gradient control valve.Specifically, the master
Main overflow valve 9 is equipped between oil inlet and oil return opening.Such structure makes failure or is able to achieve overflow when over pressure, protects
Demonstrate,prove components and system safety.
Steering cylinder oil outlet C1 is connected by control reversal valve with oil return opening.It can make steering cylinder that can be close in this way
Oil.It specifically states otherwise, the oil outlet of the utility model meaning is not necessarily meant to refer to through oil outlet oil return box or is only used for
It is fuel-displaced, it is only referred to opposite with oil inlet when work.
Embodiment three, be equipped with referring to attached drawing 5, between steering cylinder oil outlet C1 and oil return inlet T electric proportional pressure control valve 10 or
Electric proportional throttle valve.Embodiment is third is that by the throttle power in the steering cylinder oil outlet C1 and control reversal valve 3 in embodiment one
Electricity consumption proportional pressure control valve 10 or electric proportional throttle valve can be extracted individually to substitute, enable the reliable oil return of steering cylinder.
A kind of crawler-type harvester hydraulic control method, it is characterised in that: comprising: 1. when control reversal valve is in
Position, unloading valve power loss, from the pressure oil of main oil inlet by position in control reversal valve to unloading valve, and direct oil return box, at this time
When steering cylinder and work connection are all failure to actuate；2. when control reversal valve is in the commutation position of left position or right position, unloading valve power loss,
Then the pressure oil come from main oil inlet arrives steering cylinder by pressure-gradient control valve to control reversal valve, control steering cylinder movement is more
Remaining pressure oil bypass is to unloading valve oil return box, and only steering cylinder acts at this time, and when the connection that works is without other movements；3. working as control
Reversal valve processed is in middle position, and unloading valve obtains electric commutation, is in close state, and the pressure oil come from main oil inlet directly passes through control
Position and other work connection connect in reversal valve, and steering cylinder is failure to actuate at this time, and other work linkage is made；4. when control reversal valve
Commutation position in left position or right position, unloading valve obtain electric commutation, are in close state, and the pressure oil come from main oil inlet passes through
Then pressure-gradient control valve arrives steering cylinder to control reversal valve；The left side spring cavity of pressure-gradient control valve is choosing control reversal valve oil outlet
The opening that the right side control chamber of pressure oil and pressure-gradient control valve cooperates for controlling pressure-gradient control valve stem position and pressure-gradient control valve, so that more
Remaining flow works with him joins connection, and steering cylinder and work connection have movement and the preferential movement of realization steering at this time.Such energy
Reliable control rice machine movement, and meet the precedence requirement turned in rice machine work.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as instruction or
Imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' " contains
Justice is two or more.
Every technical staff's notice: although the utility model is described according to above-mentioned specific embodiment, this
The utility model thought of utility model is not limited to that utility model, and any repacking with the utility model thought all will
It is included in this patent scope of patent protection.
Claims (10)
1. a kind of crawler-type harvester hydraulic control system, it is characterised in that: including main oil inlet, oil return opening, control connection and extremely
Few job connection, each work connection include work reversal valve and actuator port, the control connection include control reversal valve with
Pressure-gradient control valve, the main oil inlet are connected with pressure-gradient control valve oil inlet, control reversal valve oil inlet respectively, the control commutation
Valve has at the first position that left position Shi Shi winner oil inlet is connected by pressure-gradient control valve with steering cylinder left oil inleting port, middle position
Make winner's oil inlet with work connection in work reversal valve be connected the second position, You Weishishi winner oil inlet by preferentially
The third place that valve is connected with the right oil inlet of steering cylinder, the pressure-gradient control valve are in first position, the in control reversal valve
Receive main inlet pressure oil when three positions and is exported respectively to control reversal valve and work reversal valve, the left side spring of pressure-gradient control valve
Chamber chooses the pressure oil of control reversal valve oil outlet and the right side of pressure-gradient control valve when controlling reversal valve and being in first position, the third place
Side control chamber cooperates for controlling pressure-gradient control valve stem position.
2. a kind of crawler-type harvester hydraulic control system according to claim 1, it is characterised in that it further include unloading valve,
Unloading valve oil inlet is connected with control reversal valve oil outlet, pressure-gradient control valve oil outlet respectively, unloading valve oil outlet and oil return opening phase
Connection.
3. a kind of crawler-type harvester hydraulic control system according to claim 2, it is characterised in that the unloading valve
For two-position two-way electromagnetic directional valve.
4. a kind of crawler-type harvester hydraulic control system according to claim 1, it is characterised in that it further include shuttle valve, institute
The shuttle valve stated extremely is turned to for choosing control reversal valve oil outlet to steering cylinder left oil inleting port pipeline, control reversal valve oil outlet
High pressure oil between the right oil inlet pipeline of oil cylinder, and export to the left side spring cavity of pressure-gradient control valve.
5. a kind of crawler-type harvester hydraulic control system according to claim 4, it is characterised in that shuttle valve oil outlet with
It is equipped between oil return opening and turns to safety overflow valve.
6. a kind of crawler-type harvester hydraulic control system according to claim 4 or 5, it is characterised in that a left side for pressure-gradient control valve
Pressure-gradient control valve safety overflow valve is equipped between lateral spring chamber and oil return opening.
7. a kind of crawler-type harvester hydraulic control system according to claim 1, it is characterised in that the main oil inlet
Main overflow valve is equipped between mouth and oil return opening.
8. a kind of crawler-type harvester hydraulic control system according to claim 1, it is characterised in that steering cylinder is fuel-displaced
Mouth is connected by control reversal valve with oil return opening.
9. a kind of crawler-type harvester hydraulic control system according to claim 1, it is characterised in that steering cylinder is fuel-displaced
Electric proportional pressure control valve or electric proportional throttle valve are equipped between mouth and oil return opening.
10. a kind of crawler-type harvester hydraulic control system according to claim 1, it is characterised in that the control is changed
It is three seven logical reversal valves of manual three seven logical reversal valves or electric ratio to valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821481362.7U CN208816429U (en) | 2018-09-11 | 2018-09-11 | A kind of crawler-type harvester hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821481362.7U CN208816429U (en) | 2018-09-11 | 2018-09-11 | A kind of crawler-type harvester hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208816429U true CN208816429U (en) | 2019-05-03 |
Family
ID=66276612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821481362.7U Withdrawn - After Issue CN208816429U (en) | 2018-09-11 | 2018-09-11 | A kind of crawler-type harvester hydraulic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208816429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953261A (en) * | 2018-09-11 | 2018-12-07 | 圣邦集团有限公司 | A kind of crawler-type harvester hydraulic control system and control method |
-
2018
- 2018-09-11 CN CN201821481362.7U patent/CN208816429U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953261A (en) * | 2018-09-11 | 2018-12-07 | 圣邦集团有限公司 | A kind of crawler-type harvester hydraulic control system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190503 Effective date of abandoning: 20230711 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190503 Effective date of abandoning: 20230711 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |