CN209667193U - A kind of electric-controlled hydraulic steering valve group based on satellite navigation - Google Patents
A kind of electric-controlled hydraulic steering valve group based on satellite navigation Download PDFInfo
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- CN209667193U CN209667193U CN201920535134.1U CN201920535134U CN209667193U CN 209667193 U CN209667193 U CN 209667193U CN 201920535134 U CN201920535134 U CN 201920535134U CN 209667193 U CN209667193 U CN 209667193U
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- valve
- mouthfuls
- connection
- shuttle
- proportioning
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Abstract
The utility model provides a kind of electric-controlled hydraulic steering valve group based on satellite navigation, this valve group includes proportioning valve, flow divider, overflow valve, the first shuttle valve, the second shuttle valve, two imports of the first shuttle valve are separately connected two outlets of proportioning valve, one import of the second shuttle valve of outlet connection of the first shuttle valve, flow divider uses three-way pressure compensating device, and remote control mouth is connect with the outlet of the second shuttle valve, overflow valve；A, B mouth of valve group are separately connected two oil outlets of proportioning valve, the oil inlet of P mouthfuls of connection proportioning valves, flow divider, T mouthfuls of connection proportioning valves, oil return openings, the oil outlet of EF mouthfuls of connection flow dividers, another import of LS1 mouthfuls of the second shuttle valves of connection, the outlet of LS2 mouthfuls of the second shuttle valves of connection.This valve group can be realized the compatibility with all-hydraulic steering gear, can also be able to achieve the matching of variable steering hydraulic system with the matching of quantitative steering hydraulic system；The manual intervenes of startup of driver can be perceived, and issues signal to automatic steering controller, eliminates automatic control state.
Description
Technical field
The utility model relates generally to technical field of hydraulic pressure, specifically a kind of electric-controlled hydraulic switching valve based on satellite navigation
Group.
Background technique
At present in big-powered tractor field, steering system is all made of all-hydraulic steering gear, all-hydraulic by direction dish driving
Diverter, in fixed dilivery hydraulic system, steering pump output hydraulic pressure oil, the diverted device of hydraulic oil, into steering cylinder, to control
The steering angle of tractor front-wheel.It is hydraulic to diverter offer by load sensitive pump in load-reacting hydraulic system
Oil.
The satellite precision navigation requirement of agricultural machinery turns to valve group control by electric-controlled hydraulic and turns in autonomous driving state
To oil cylinder, accurate ratio control is realized；In driver's manual drive, by the dynamic of all-hydraulic steering gear control steering cylinder
Make.Therefore basic demand electric-controlled hydraulic turns to valve group and former all-hydraulic steering gear and can be compatible with, and has both been able to satisfy the peace of variable system
Reload request is also able to satisfy the requirement of quantitative system.And in the prior art, there is not also mature technology that can fully meet above-mentioned
It is required that.
Utility model content
For the deficiency for solving current technology, the utility model combination prior art provides a kind of base from practical application
Valve group is turned in the electric-controlled hydraulic of satellite navigation, this valve group can be realized the compatibility with all-hydraulic steering gear, can be with quantitatively turning
Matching to hydraulic system is also able to achieve the matching of variable steering hydraulic system；The manual intervenes of startup of driver can be perceived, and
Signal is issued to automatic steering controller, eliminates automatic control state.
The technical solution of the utility model is as follows:
A kind of electric-controlled hydraulic based on satellite navigation turns to valve group, this valve group includes proportioning valve, flow divider, overflow valve, the
One shuttle valve, the second shuttle valve, two imports of the first shuttle valve are separately connected two outlets of proportioning valve, the outlet connection of the first shuttle valve
One import of the second shuttle valve, flow divider use three-way pressure compensating device, are remotely controlled the outlet of mouth and the second shuttle valve, overflow valve connects
It connects；A, B, P, T, EF, LS1, LS2 totally 7 connection hydraulic fluid ports are arranged in valve group, wherein A, B mouthfuls of two for being separately connected proportioning valve are fuel-displaced
Mouthful, the oil inlet of P mouthfuls of connection proportioning valves, flow divider, the oil return opening of T mouthfuls of connection proportioning valves, overflow valve, EF mouthfuls of connection flow dividers
Oil outlet, another import of LS1 mouthfuls of the second shuttle valves of connection, the outlet of LS2 mouthfuls of the second shuttle valves of connection.
The first pressure for detecting this mouthful of pressure condition is equipped at EF mouthfuls described to switch, it is LS1 mouthful described at equipped with being used for
Detect the second pressure switch of this mouthful of pressure condition.
The channel connecting with proportioning valve A mouthfuls of is equipped with the first check valve, on the channel connecting with proportioning valve B mouthfuls of
Equipped with second one-way valve.
The proportioning valve is 3-position 4-way proportioning valve.
The utility model has the beneficial effects that
The utility model provides a kind of automatically controlled steering valve group of the tractor autonomous driving for being adapted to satellite navigation, this is automatically controlled
It turns to valve group and is not only applicable to quantitative all-hydraulic steering gear, be also adapted to load-sensitive variable displacement all-hydraulic steering gear, have wide
General compatibility；The automatically controlled steering valve group is able to detect the working condition of all-hydraulic steering gear, is convenient for by setting pressure switch
Realize the automation control of autonomous driving system；The automatically controlled valve group can guarantee the operating pressure of oil pump only than the work of steering cylinder
Make the setting pressure about 0.7bar of the big spring of pressure, reduce calorific value, realizes energy conservation.
Detailed description of the invention
Fig. 1 is that electric-controlled hydraulic turns to valve group schematic diagram.
Fig. 2 is connection figure compatible with quantitative all-hydraulic steering gear.
Fig. 3 is connection figure compatible with load-sensitive all-hydraulic steering gear.
Label shown in attached drawing:
1, proportioning valve；2, flow divider；3, overflow valve；4, the second shuttle valve；5, the first shuttle valve；6, the first check valve；7, second
Check valve；8, first pressure switchs；9, second pressure switchs；10, all-hydraulic steering gear；11, turning gradient control valve；12, steering oil
Cylinder；13, automatically controlled steering valve group.
Specific embodiment
With reference to the drawings and specific embodiments, the utility model is described in further detail.It should be understood that these embodiments are only used for
Illustrate the utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, having read the utility model instruction
Content after, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms are equally fallen
In range defined herein.
As shown in Figure 1, being the electric-controlled hydraulic ratio valve block structure of the utility model, this valve group is set using composite sensing technology
Meter, it is unidirectional by 3-position 4-way proportioning valve 1, flow divider 2, overflow valve 3, the first shuttle valve 5, the second shuttle valve 4, the first check valve 6, second
Valve 7, first pressure switch 8, second pressure switch 9 form；7 connection hydraulic fluid ports are arranged in valve group, respectively: A mouthfuls, B mouthfuls are used to connect
Steering cylinder, P mouthfuls are used to connect steering pump oil outlet, and T mouthfuls for connecting tractor steering oil cylinder；In quantitative system, LS1,
LS2 is blocked with silk plug, EF mouthfuls of connection tractor original vehicle diverter oil inlets, and in variable system, EF mouthfuls are blocked with silk plug, and LS1 pairs
All-hydraulic steering gear LS, LS2 should be connected and be correspondingly connected with LS mouthfuls of normal variable pump.
Basic principle: hydraulic oil enters valve group from P mouthfuls, and the variable scale of A mouthfuls, B mouthfuls is realized using 3-position 4-way proportioning valve 1
Control, when proportioning valve 1 must not electricity when, A mouthfuls, B mouthfuls under the action of the first check valve 6, second one-way valve 7, hydraulic oil in oil cylinder
Automatically controlled switching valve will not reversely be flowed into.This technology, as flow divider 2, is passed through using three-way pressure compensating device first, it is remotely controlled mouth
Damping hole is connected with the second shuttle valve 4, and the first shuttle valve 5, the second shuttle valve 4 will load after maximum pressure selection that act on flow divider 2 distant
Control mouth, 2 oil inlet of flow divider is connected with the oil inlet of proportioning valve 1, therefore in 1 work once electrified of proportioning valve, oil inlet with out
The pressure difference of hydraulic fluid port is equal to the pressure for shunting valve spring, is held essentially constant, and the flow of proportioning valve 1 is only related with openings of sizes, with
The variation of load pressure is unrelated.Second, excess traffic is shunted other circuits by flow divider 2 in quantitative system.
The automatically controlled steering valve group setting first pressure switch 8, second pressure switch 9 detect EF mouthfuls of pressure, LS1 mouthfuls of pressures respectively
Power state.In quantitative system, EF mouthfuls of connection all-hydraulic steering gear oil inlets, when manual steering wheel, EF mouthfuls are in high pressure conditions, the
One pressure switch 8 has high-voltage signal output；In load-sensitive variable system, LS1 mouthfuls LS mouthfuls of diverter of connection, when manual side
To disk, high pressure conditions are presented in LS1, and second pressure switch 9 has high-voltage signal output.When first pressure switch 8 or second pressure
When switch 9 has high-voltage signal output, navigation controller is notified, be allowed to output and control automatically controlled steering valve group power loss.
Embodiment 1: as shown in Fig. 2, being this valve group connection system compatible with quantitative all-hydraulic steering gear, in the system
In, this automatically controlled steering valve group 13 hydraulic fluid port A, B, A, B of all-hydraulic steering gear 10 connect by A, B hydraulic fluid port of threeway and steering cylinder 12
It connects, the automatically controlled EF hydraulic fluid port for turning to valve group 13 is connect with the P of all-hydraulic steering gear 10 mouth, oil pump out of the mouth and automatically controlled steering valve group 13
P mouth connection, automatically controlled steering 13 oil return inlet T of valve group oil return box after threeway is in parallel with the oil return inlet T of all-hydraulic steering gear 10,
Automatically controlled LS1, LS2 hydraulic fluid port for turning to valve group 13 is blocked with silk plug.
When satellite navigation autonomous driving system, under automatic Pilot state, driver does not operate steering wheel, at this time full liquid
Pressure diverter 10 is in middle position state, and P mouthfuls and T mouthfuls communicate, and all-hydraulic steering gear 10 is in unloading condition, and A, B mouthfuls are in
Off state.Satellite navigation autonomous driving system output order at this time, automatically controlled steering valve group 13 must be electric, by automatically controlled steering valve group 13
Steering cylinder 12 is controlled, all-hydraulic steering gear 10 does not work；When steering wheel is manually operated in driver, all-hydraulic steering gear 10
In left position or right position, P mouthfuls are in high pressure conditions, and it is in high pressure conditions that the automatically controlled first pressure switch 8 for turning to valve group 13, which detects EF mouthfuls,
The controller of satellite navigation autonomous driving system detects the high pressure conditions signal of first pressure switch 8, automatic to cancel to automatically controlled
The control of valve group 13 is turned to, system is detached from automatic Pilot state, and automatically controlled steering valve group 13 is in the first check valve 6, second one-way valve 7
Under the action of, A, B mouthfuls are in off state, and all-hydraulic steering gear 10 controls the movement of steering cylinder 12 at this time.
Embodiment 2: as shown in figure 3, for utility model and load-sensitive all-hydraulic steering gear compatible system.In this system
In, automatically controlled steering valve group 13 hydraulic fluid port A, B, A, B hydraulic fluid port of A, B hydraulic fluid port of all-hydraulic steering gear 10 Jing Guo threeway and steering cylinder 12
Connection, the CF mouth phase of the P hydraulic fluid port of automatically controlled steering valve group 13 and the P mouth of all-hydraulic steering gear 10 Jing Guo threeway and turning gradient control valve 11
Even, automatically controlled steering 13 oil return inlet T of valve group oil return box after threeway is in parallel with the oil return inlet T of all-hydraulic steering gear 10, automatically controlled turn
It is connected to the LS1 mouth of valve group 13 with the LS of all-hydraulic steering gear 10 mouth, the automatically controlled LS2 for turning to valve group 13 and turning gradient control valve 11
LS mouthfuls are connected, and the automatically controlled EF mouth for turning to valve group 13 is blocked with silk plug.
When satellite navigation autonomous driving system, under automatic Pilot state, driver does not operate steering wheel, at this time load
Sensitive all-hydraulic steering gear 10 is in middle position state, and A, B mouthfuls of cut-offs, P mouthfuls and T mouthfuls are in high-impedance state, all-hydraulic steering gear
10 hydraulic fluid flow rate is close to zero.Satellite navigation autonomous driving system output order at this time, automatically controlled steering valve group 13 must be electric, by electricity
Control turns to valve group 13 and controls steering cylinder 12, and all-hydraulic steering gear 10 does not work, when automatically controlled steering valve group 13 is also at middle position
When, hydraulic oil is by the EF mouth of turning gradient control valve 11 to other hydraulic circuits；It is all-hydraulic when steering wheel is manually operated in driver
Diverter 10 is in left position or right position, and P mouthfuls are in high pressure conditions, and the automatically controlled second pressure switch 9 for turning to valve group 13 detects LS1 mouthfuls and is in
The controller of high pressure conditions, satellite navigation autonomous driving system detects the high pressure conditions signal of first pressure switch 8, takes automatically
The control to disappear to automatically controlled switching valve, system are detached from automatic Pilot state, and automatically controlled switching valve is in the first check valve 6, second one-way valve 7
Under the action of, A, B mouthfuls are in off state, and all-hydraulic steering gear 13 controls the movement of steering cylinder 12 at this time.
Claims (4)
1. a kind of electric-controlled hydraulic based on satellite navigation turns to valve group, it is characterised in that: this valve group include proportioning valve, flow divider,
Overflow valve, the first shuttle valve, the second shuttle valve, two imports of the first shuttle valve are separately connected two outlets of proportioning valve, the first shuttle valve
Outlet connection the second shuttle valve an import, flow divider use three-way pressure compensating device, remote control mouth and the second shuttle valve out
Mouth, overflow valve connection；A, B, P, T, EF, LS1, LS2 totally 7 connection hydraulic fluid ports are arranged in valve group, wherein A, B mouthfuls are separately connected ratio
Two oil outlets of valve, the oil inlet of P mouthfuls of connection proportioning valves, flow divider, the oil return opening of T mouthfuls of connection proportioning valves, overflow valve, EF mouthfuls
Connect the oil outlet of flow divider, another import of LS1 mouthfuls of the second shuttle valves of connection, the outlet of LS2 mouthfuls of the second shuttle valves of connection.
2. a kind of electric-controlled hydraulic based on satellite navigation as described in claim 1 turns to valve group, it is characterised in that: EF mouthfuls described
Place is equipped with the first pressure for detecting this mouthful of pressure condition and switchs, it is LS1 mouthful described at equipped with for detecting this mouthful of pressure condition
Second pressure switch.
3. a kind of electric-controlled hydraulic based on satellite navigation as described in claim 1 turns to valve group, it is characterised in that: A mouthfuls described
The channel connecting with proportioning valve is equipped with the first check valve, and the channel connecting with proportioning valve B mouthfuls of is equipped with second one-way valve.
4. a kind of electric-controlled hydraulic based on satellite navigation as described in claim 1 turns to valve group, it is characterised in that: the ratio
Valve is 3-position 4-way proportioning valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920535134.1U CN209667193U (en) | 2019-04-18 | 2019-04-18 | A kind of electric-controlled hydraulic steering valve group based on satellite navigation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920535134.1U CN209667193U (en) | 2019-04-18 | 2019-04-18 | A kind of electric-controlled hydraulic steering valve group based on satellite navigation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209667193U true CN209667193U (en) | 2019-11-22 |
Family
ID=68574360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920535134.1U Expired - Fee Related CN209667193U (en) | 2019-04-18 | 2019-04-18 | A kind of electric-controlled hydraulic steering valve group based on satellite navigation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209667193U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112550446A (en) * | 2020-12-17 | 2021-03-26 | 航天重型工程装备有限公司 | Steering system |
-
2019
- 2019-04-18 CN CN201920535134.1U patent/CN209667193U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112550446A (en) * | 2020-12-17 | 2021-03-26 | 航天重型工程装备有限公司 | Steering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191122 Termination date: 20200418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |