CN104386123B - Tractor and hydraulic steering system - Google Patents
Tractor and hydraulic steering system Download PDFInfo
- Publication number
- CN104386123B CN104386123B CN201410736594.2A CN201410736594A CN104386123B CN 104386123 B CN104386123 B CN 104386123B CN 201410736594 A CN201410736594 A CN 201410736594A CN 104386123 B CN104386123 B CN 104386123B
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- mouth
- hydraulic steering
- import
- fuel tank
- working oil
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
Abstract
The invention discloses a hydraulic steering system of a tractor. The system comprises an oil tank, a gear pump, a motor, a first two-position three-way electromagnetic valve, a hydraulic steering gear, a steering cylinder and a three-position four-way electromagnetic valve; the first two-position three-way electromagnetic valve, the oil tank, the hydraulic steering gear and the steering cylinder are connected to form a manual steering system; the first two-position three-way electromagnetic valve, the oil tank, the three-position four-way electromagnetic valve and the steering cylinder are connected to form an electric steering system. According to the hydraulic steering system of the tractor, since the manual steering system is capable of controlling the tractor in the driving position, the electric steering system is capable of controlling outside the driving position, the system has two control modes, and the requirements of different conditions are met. The invention further discloses a tractor with the hydraulic steering system.
Description
Technical field
The present invention relates to tractor technical field, particularly to a kind of hydraulic steering system of tractor.Also
It is related to a kind of tractor comprising this hydraulic steering system.
Background technology
Tractor is widely used in cargo transport field, and existing tractor generally uses hydro-steering system
Realizing the steering of vehicle, its steering control mode all passes through for system or one of mechanical steering system
People rides in vehicle upper-pilot steering wheel and carries out course changing control, and its control model is single.
Because tractor is when transporting goods, can there is the situation that goods occupies driver's steering position, lead
Driver is caused cannot steering wheel to be controlled ride traction car, therefore, using existing hydro-steering
System and mechanical steering system all cannot complete course changing control, and tractor can not meet the needs of existing operating mode.
In sum, how to solve existing steering control mode single it is impossible to steering position outer to leading
Draw the problem that car carries out course changing control, become those skilled in the art's problem demanding prompt solution.
Content of the invention
In view of this, it is an object of the invention to provide a kind of hydraulic steering system of tractor, to drive
All course changing control can be carried out to tractor outside sailing position and steering position.
Further object is that providing a kind of tractor comprising this hydraulic steering system, with full
The needs of foot difference operating mode.
For reaching above-mentioned purpose, the present invention provides technical scheme below：
A kind of hydraulic steering system of tractor, including：
Fuel tank；
Gear pump, its inlet port is connected with described fuel tank；
Motor, drives described gear pump；
The outlet of the first two-bit triplet magnetic valve, its import P2 and described gear pump；
All-hydraulic steering gear, its import P3 is connected with the A2 mouth of described first two-bit triplet magnetic valve, described
The T3 mouth of all-hydraulic steering gear is connected with described fuel tank；
Steering cylinder, the right working oil chamber of described steering cylinder is connected with the A3 mouth of described all-hydraulic steering gear,
The left working oil chamber of described steering cylinder is connected with the B3 mouth of described all-hydraulic steering gear；
Three position four-way electromagnetic valve, its import P4 is connected with the B2 mouth of described first two-bit triplet magnetic valve, institute
The T4 mouth stating three position four-way electromagnetic valve is connected with described fuel tank, the A4 mouth of described three position four-way electromagnetic valve and institute
State left working oil chamber connection, the B4 mouth of described three position four-way electromagnetic valve is connected with described right working oil chamber.
Preferably, in above-mentioned hydraulic steering system, the A3 mouth of described all-hydraulic steering gear, the described right side
Working oil chamber is connected by the first triple valve with the B4 mouth of described three position four-way electromagnetic valve；Described all-hydraulic turn
A4 mouth to the B3 mouth, described left working oil chamber and described three position four-way electromagnetic valve of device passes through the second triple valve
Connection.
Preferably, in above-mentioned hydraulic steering system, its no steering pattern work oil circulation path according to
Secondary through described fuel tank, gear pump, the import P2 of described first two-bit triplet magnetic valve and A2 mouth, described
The import P3 of all-hydraulic steering gear and T3 mouth, return described fuel tank.
Preferably, in above-mentioned hydraulic steering system, the working oil circulation of its manually operated right-hand rotation pattern
Path sequentially pass through described fuel tank, gear pump, the import P2 of described first two-bit triplet magnetic valve and A2 mouth,
The import P3 of described all-hydraulic steering gear and A3 mouth, the right working oil chamber of described steering cylinder and left working oil
Chamber, the B3 mouth of described all-hydraulic steering gear and T3 mouth, return described fuel tank.
Preferably, in above-mentioned hydraulic steering system, the working oil circulation of its manually operated left-hand rotation pattern
Path sequentially pass through described fuel tank, gear pump, the import P2 of described first two-bit triplet magnetic valve and A2 mouth,
The import P3 of described all-hydraulic steering gear and B3 mouth, the left working oil chamber of described steering cylinder and right working oil
Chamber, the A3 mouth of described all-hydraulic steering gear and T3 mouth, return described fuel tank.
Preferably, in above-mentioned hydraulic steering system, the working oil circulation of its electric control operation right-hand rotation pattern
Path sequentially pass through described fuel tank, gear pump, the import P2 of described first two-bit triplet magnetic valve and B2 mouth,
The import P4 of described three position four-way electromagnetic valve and B4 mouth, the right working oil chamber of described steering cylinder and left work
Oil pocket, the A4 mouth of described three position four-way electromagnetic valve and T4 mouth, return described fuel tank.
Preferably, in above-mentioned hydraulic steering system, the working oil circulation of its electric control operation right-hand rotation pattern
Path sequentially pass through described fuel tank, gear pump, the import P2 of described first two-bit triplet magnetic valve and B2 mouth,
The import P4 of described three position four-way electromagnetic valve and A4 mouth, the left working oil chamber of described steering cylinder and right work
Oil pocket, the B4 mouth of described three position four-way electromagnetic valve and T4 mouth, return described fuel tank.
Preferably, in above-mentioned hydraulic steering system, also include the second two-bit triplet magnetic valve, described
The import P1 of the second two-position three-way valve and the outlet of described gear pump, A1 mouth with described the first two three
The import P2 connection of three-way electromagnetic valve.
Preferably, in above-mentioned hydraulic steering system, overflow valve and return filter are also included, described
The outlet of the import of overflow valve and described gear pump, the two-port of described return filter respectively with institute
The outlet stating overflow valve connects with described fuel tank.
Present invention also offers a kind of tractor, including hydraulic steering system, described hydraulic steering system is
Hydraulic steering system described in any of the above item.
Compared with prior art, the invention has the beneficial effects as follows：
The present invention provide the hydraulic steering system of tractor in, by fuel tank, the first two-bit triplet magnetic valve,
All-hydraulic steering gear, steering cylinder connect formation manual steering system, by fuel tank, the first two-bit triplet electricity
Magnet valve, three position four-way electromagnetic valve and steering cylinder connect the automatically controlled steering of formation, by controlling first liang
Position-3-way solenoid valve and three position four-way electromagnetic valve dead electricity situation, to control tractor to adopt manual steering
Or automatically controlled steering and specific steering direction.Because manual steering system can be in steering position to traction
Car is controlled, and automatically controlled steering can be controlled outside steering position, thus this hydraulic pressure
Steering has two kinds of control models, meets the needs of different operating modes.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The accompanying drawing applying required use in example or description of the prior art be briefly described it should be apparent that, below
Accompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, not
On the premise of paying creative work, other accompanying drawings can also be obtained according to the accompanying drawing providing.
Fig. 1 is a kind of schematic diagram of the hydraulic steering system of tractor provided in an embodiment of the present invention.
In FIG, 1 be fuel tank, 2 be gear pump, 3 be motor, 4 be the 3rd triple valve, 5 be second liang
Position-3-way solenoid valve, 6 be the first two-bit triplet magnetic valve, 7 be all-hydraulic steering gear, 8 be the second triple valve,
9 is the first triple valve, 10 is steering cylinder, 11 is three position four-way electromagnetic valve, 12 is overflow valve, 13 are back
Oil strainer.
Specific embodiment
The core of the present invention there is provided a kind of hydraulic steering system of tractor, makes personnel in steering position
All course changing control can be carried out to tractor with outside steering position, meet the use demand of different operating modes.
Present invention also offers a kind of tractor comprising this hydraulic steering system, disclosure satisfy that different operating modes
Use demand.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
The every other embodiment being obtained under the premise of going out creative work, broadly falls into the scope of protection of the invention.
Refer to Fig. 1, Fig. 1 is a kind of the former of the hydraulic steering system of tractor provided in an embodiment of the present invention
Reason figure.
Embodiments provide a kind of hydraulic steering system of tractor, hereinafter referred to as fluid-link steering system
System, including fuel tank 1, gear pump 2, motor 3, the first two-bit triplet magnetic valve 6, all-hydraulic steering gear 7,
Steering cylinder 10 and three position four-way electromagnetic valve 11；Wherein, the inlet port of gear pump 2 is connected with fuel tank 1, electricity
Machine 3 driving gear pump 2 draws working oil from fuel tank 1；The import P2 of the first two-bit triplet magnetic valve 6 and tooth
The outlet of wheel pump 2, the A2 mouth of the first two-bit triplet magnetic valve 6 and the import P3 of all-hydraulic steering gear 7
Connection；The T3 mouth of all-hydraulic steering gear 7 is connected with fuel tank 1, the right working oil chamber of A3 mouth and steering cylinder 10
Connection, B3 mouth is connected with the left working oil chamber of steering cylinder 10；The import P4 of three position four-way electromagnetic valve 11 with
The B2 mouth connection of the first two-bit triplet magnetic valve 3, T4 mouth connects with fuel tank 1, B4 mouth and steering cylinder 10
Right working oil chamber connection, A4 mouth is connected with the left working oil chamber of steering cylinder 10.
Hydraulic steering system in above-described embodiment employs two sets of steering control systems, that is, by fuel tank 1,
The manual steering system that one or two position-3-way solenoid valve 6, all-hydraulic steering gear 7 and steering cylinder 10 are formed by connecting,
And connected by fuel tank 1, the first two-bit triplet magnetic valve 6, three position four-way electromagnetic valve 11 and steering cylinder 10
Automatically controlled steering；When driver can ride on steering position, can be turned using manual
Turned to system (steering wheel rotation), when steering position occurs being taken by goods leading it is impossible to take
When drawing car, can be turned to by automatically controlled steering outside steering position.It can be seen that, the present invention
The hydraulic steering system providing not only can carry out course changing control in steering position to tractor, can also be
Carry out course changing control outside steering position, meet the use demand of different operating modes.Two kinds of steering
Concrete operations are as follows：
It is stipulated that during the electromagnet a1 dead electricity of the first two-bit triplet magnetic valve 6 in above-mentioned hydraulic steering system, its
Import P2 is connected with A2 mouth, and B2 mouth is closed, and when electromagnet a1 obtains electric, import P2 is connected with B2 mouth, A2
Mouth is closed；When the electromagnet a3 of three position four-way electromagnetic valve 11 obtains electric, its import P4 is connected with A4 mouth, B4 mouth
Connect with T4 mouth, when electromagnet b3 obtains electric, import P4 is connected with B4 mouth, and A4 mouth is connected with T4 mouth, works as electricity
When magnet a3 and the equal dead electricity of magnetic valve b3, each interface of three position four-way electromagnetic valve 11 does not all connect.Certainly,
When can also specify magnetic valve a1 dead electricity, import P2 is connected with B2 mouth, and A2 mouth is closed etc., below with first
Illustrate as a example planting regulation.
Hydraulic steering system in the present invention includes five kinds of mode of operations, is no steering pattern, manually respectively
Operation right-hand rotation pattern, manually operated left-hand rotation pattern, electric control operation right-hand rotation pattern and electric control operation left-hand rotation pattern.
Wherein：When carrying out no steering pattern, the electromagnet a1 dead electricity of the first two-bit triplet magnetic valve 6, three four
The electromagnet a3 of three-way electromagnetic valve 11 and b3 dead electricity, the steering wheel of all-hydraulic steering gear 7 no operates, its import P3
Connect with T3 mouth, B3 and A3 mouth is obstructed, then the circulating path of working oil sequentially pass through fuel tank 1, gear pump 2,
Import P2, A2 mouth of the first two-bit triplet magnetic valve 6, import P3, T3 mouth of all-hydraulic steering gear 7, returns
Oil return box 1, system release, do not turned to.
When being operated manually right-hand rotation pattern, the first two-bit triplet magnetic valve 6 and three position four-way electromagnetic valve 11
State identical with no steering pattern, rotate clockwise steering wheel (according to drive rule, rotate clockwise
Steering wheel, vehicle is turned right), the import P3 of all-hydraulic steering gear 7 is connected with A3 mouth, and B3 mouth is with T3 mouth even
Logical.Then the circulating path of working oil is sucked from fuel tank 1 by gear pump 2 for working oil, through the first two
Import P2, A2 mouth of three-way magnetic valve 6, import P3, A3 mouth of all-hydraulic steering gear 7 enters steering cylinder
10 right working oil chamber, working oil promotes the piston working oil chamber direction movement to the left in steering cylinder 10,
Make working oil in left working oil chamber out, and the B3 mouth through all-hydraulic steering gear 7, T3 mouth return fuel tank
1, the piston of steering cylinder 10, to left movement, is realized tractor and is turned right.
When being operated manually left-hand rotation pattern, the first two-bit triplet magnetic valve 6 and three position four-way electromagnetic valve 11
State identical with no steering pattern, rotate counterclockwise steering disk (according to drive rule, rotate counterclockwise
Steering wheel, vehicle turns left), the import P3 of all-hydraulic steering gear 7 is connected with B3 mouth, and A3 mouth is with T3 mouth even
Logical.Then the circulating path of working oil is sucked from fuel tank 1 by gear pump 2 for working oil, through the first two
Import P2, A2 mouth of three-way magnetic valve 6, import P3, B3 mouth of all-hydraulic steering gear 7 enters steering cylinder
10 left working oil chamber, working oil promotes the piston working oil chamber direction movement to the right in steering cylinder 10,
Make working oil in right working oil chamber out, and the A3 mouth through all-hydraulic steering gear 7, T3 mouth return fuel tank
1, the piston of steering cylinder 10 moves right, and realizes tractor.All-hydraulic steering gear 7 is in motor 3 not
During work, may also operate as the effect of manual pump, realize vehicle manual steering.
When carrying out electric control operation right-hand rotation pattern, the electromagnet a2 of the first two-bit triplet magnetic valve 6 obtain electric, three
The electromagnet b3 of position four-way solenoid valve 11 obtains electric, electromagnet a3 dead electricity, the import P3 of all-hydraulic steering gear 7 with
T3 connects, and B3 and A3 closes.Then the circulating path of working oil is inhaled from fuel tank 1 by gear pump 2 for working oil
Enter, through import P2, B2 mouth of the first two-bit triplet magnetic valve 6, the import P4 of three position four-way electromagnetic valve 11,
B4 mouth enters the right working oil chamber of steering cylinder 10, and working oil promotes the piston work to the left in steering cylinder 10
Make oil pocket direction to move, make working oil in left working oil chamber out, and through three position four-way electromagnetic valve 11
A4 mouth, T4 mouth return fuel tank 1, the piston of steering cylinder 10 to left movement, realize tractor turn right.
When carrying out electric control operation left-hand rotation pattern, the electromagnet a2 of the first two-bit triplet magnetic valve 6 obtain electric, three
The electromagnet b3 dead electricity of position four-way solenoid valve 11, electromagnet a3 obtain electric, the import P3 of all-hydraulic steering gear 7 with
T3 connects, and B3 and A3 closes.Then the circulating path of working oil is inhaled from fuel tank 1 by gear pump 2 for working oil
Enter, through import P2, B2 mouth of the first two-bit triplet magnetic valve 6, the import P4 of three position four-way electromagnetic valve 11,
A4 mouth enters the left working oil chamber of steering cylinder 10, and working oil promotes the piston work to the right in steering cylinder 10
Make oil pocket direction to move, make working oil in right working oil chamber out, and through three position four-way electromagnetic valve 11
B4 mouth, T4 mouth return fuel tank, the piston of steering cylinder 10 moves right, and realizes tractor.
As shown in figure 1, in the present embodiment, the A3 mouth of all-hydraulic steering gear 7, the right work of steering cylinder 10
Make oil pocket to connect by the first triple valve 9 with the B4 mouth of three position four-way electromagnetic valve 11, to reduce the paving of pipeline
If, it is, of course, also possible to by the B4 mouth of the A3 mouth of all-hydraulic steering gear 7 and three position four-way electromagnetic valve 11 respectively with
The right working oil chamber connection of steering cylinder 10；The B3 mouth of all-hydraulic steering gear 7, the left work of steering cylinder 10
Oil pocket is connected by the second triple valve 8 with the A4 mouth of three position four-way electromagnetic valve 11, to reduce the laying of pipeline,
It is of course also possible to by the A3 mouth of the B3 mouth of all-hydraulic steering gear 7 and three position four-way electromagnetic valve 11 respectively with steering
The left working oil chamber connection of oil cylinder 10.
In the present embodiment, hydraulic steering system also includes the second two-bit triplet magnetic valve 5, the second two three
The import P1 of three-way electromagnetic valve 5 and the outlet of gear pump 2, A1 mouth is entered with the first two-bit triplet magnetic valve 6
Mouthful P2 connection is it is stipulated that during the electromagnet a1 dead electricity of the second two-bit triplet magnetic valve 5, its import P1 is with A1 mouth even
Logical, B1 mouth is closed.The purpose arranging the second two-bit triplet magnetic valve 5 is in order to will be auxiliary with vehicle other for B1 mouth
Help equipment to connect, use for vehicle other miscellaneous function, certainly, if the no other miscellaneous function of vehicle,
The second two-bit triplet magnetic valve 5 can be not provided with.
In order to be further ensured that the security of hydraulic steering system, in this embodiment, hydraulic steering system is also
Including overflow valve 12, the outlet of the import of overflow valve 12 and gear pump 2, the outlet of overflow valve 12 and oil
Case 1 connects, and when system oil pressure is excessive, carries out release by overflow valve 12.
Further, in the present embodiment, hydraulic steering system also includes return filter 13, oil return
The two-port of filter 13 is connected with the outlet of overflow valve 12 and fuel tank 1 respectively, right by return filter 13
Working oil is filtered, and goes the removal of impurity, to ensure recycling of working oil, and protects hydraulic drive system
System.
When being provided with the second two-bit triplet magnetic valve 5, the second two-bit triplet magnetic valve 5, gear pump 2 and overflow
Stream valve 12 is connected by the 3rd triple valve 4.
The embodiment of the present invention additionally provides a kind of tractor, including hydraulic steering system, wherein, hydraulic rotation
To hydraulic steering system described by all of the above embodiment for the system.By arranging this hydraulic steering system,
The manual steering of tractor and automatically controlled steering can be realized, driver can be in steering position and steering position
Outside course changing control is carried out to tractor, to adapt to the demand of different operating modes.
In this specification, each embodiment is described by the way of going forward one by one, and each embodiment stresses
The difference with other embodiment, between each embodiment identical similar portion mutually referring to.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple modifications to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the wide scope consistent with principles disclosed herein and features of novelty.
Claims (9)
1. a kind of hydraulic steering system of tractor is it is characterised in that include：
Fuel tank (1)；
Gear pump (2), its inlet port is connected with described fuel tank (1)；
Motor (3), drives described gear pump (2)；
First two-bit triplet magnetic valve (6), its import P2 is connected with the outlet of described gear pump (2)
Logical；
The A2 of all-hydraulic steering gear (7), its import P3 and described first two-bit triplet magnetic valve (6)
Mouth connection, the T3 mouth of described all-hydraulic steering gear (7) is connected with described fuel tank (1)；
Steering cylinder (10), the right working oil chamber of described steering cylinder (10) and described hydro-steering
The connection of A3 mouth, the left working oil chamber of described steering cylinder (10) and the described hydro-steering of device (7)
The B3 mouth connection of device (7)；
Three position four-way electromagnetic valve (11), its import P4 and described first two-bit triplet magnetic valve (6)
B2 mouth connects, and the T4 mouth of described three position four-way electromagnetic valve (11) is connected with described fuel tank (1), institute
The A4 mouth stating three position four-way electromagnetic valve (11) is connected with described left working oil chamber, described 3-position 4-way electricity
The B4 mouth of magnet valve (11) is connected with described right working oil chamber；
Second two-bit triplet magnetic valve (5), the import P1 of described second two-bit triplet magnetic valve (5)
With the outlet of described gear pump (2), A1 mouth and described first two-bit triplet magnetic valve (6)
Import P2 connects.
2. hydraulic steering system according to claim 1 is it is characterised in that described all-hydraulic turn
B4 mouth to the A3 mouth, described right working oil chamber and described three position four-way electromagnetic valve (11) of device (7)
Connected by the first triple valve (9)；The B3 mouth of described all-hydraulic steering gear (7), described left work
Oil pocket is connected by the second triple valve (8) with the A4 mouth of described three position four-way electromagnetic valve (11).
3. hydraulic steering system according to claim 1 is it is characterised in that its no steering pattern
Work oil circulation path sequentially pass through described fuel tank (1), gear pump (2), described the first two three
The import P2 of three-way electromagnetic valve (6) and A2 mouth, import P3 and T3 of described all-hydraulic steering gear (7)
Mouthful, return described fuel tank (1).
4. hydraulic steering system according to claim 1 is it is characterised in that its manually operated right side
The work oil circulation path of rotary-die type sequentially pass through described fuel tank (1), gear pump (2), described first
The import P2 of two-bit triplet magnetic valve (6) and the import of A2 mouth, described all-hydraulic steering gear (7)
P3 and A3 mouth, the right working oil chamber of described steering cylinder (10), working oil is through described left working oil
Chamber, the B3 mouth of described all-hydraulic steering gear (7) and T3 mouth, return described fuel tank (1).
5. hydraulic steering system according to claim 1 is it is characterised in that its manually operated left side
The work oil circulation path of rotary-die type sequentially pass through described fuel tank (1), gear pump (2), described first
The import P2 of two-bit triplet magnetic valve (6) and the import of A2 mouth, described all-hydraulic steering gear (7)
P3 and B3 mouth, the left working oil chamber of described steering cylinder (10), working oil is through described right working oil
Chamber, the A3 mouth of described all-hydraulic steering gear (7) and T3 mouth, return described fuel tank (1).
6. hydraulic steering system according to claim 1 is it is characterised in that its electric control operation is right
The work oil circulation path of rotary-die type sequentially pass through described fuel tank (1), gear pump (2), described first
The import P2 of two-bit triplet magnetic valve (6) and B2 mouth, the entering of described three position four-way electromagnetic valve (11)
Mouth P4 and B4 mouth, the right working oil chamber of described steering cylinder (10), working oil is through described left work
Oil pocket, the A4 mouth of described three position four-way electromagnetic valve (11) and T4 mouth, return described fuel tank (1).
7. hydraulic steering system according to claim 1 is it is characterised in that its electric control operation is left
The work oil circulation path of rotary-die type sequentially pass through described fuel tank (1), gear pump (2), described first
The import P2 of two-bit triplet magnetic valve (6) and B2 mouth, the entering of described three position four-way electromagnetic valve (11)
Mouth P4 and A4 mouth, the left working oil chamber of described steering cylinder (10), working oil is through described right work
Oil pocket, the B4 mouth of described three position four-way electromagnetic valve (11) and T4 mouth, return described fuel tank (1).
8. hydraulic steering system according to claim 1 is it is characterised in that also include overflow valve
(12) and return filter (13), the import of described overflow valve (12) and described gear pump (2)
Outlet, the two-port of described return filter (13) respectively with the going out of described overflow valve (12)
Mouth connects with described fuel tank (1).
9. a kind of tractor, including hydraulic steering system it is characterised in that described hydraulic steering system is
Hydraulic steering system as described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736594.2A CN104386123B (en) | 2014-12-05 | 2014-12-05 | Tractor and hydraulic steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736594.2A CN104386123B (en) | 2014-12-05 | 2014-12-05 | Tractor and hydraulic steering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104386123A CN104386123A (en) | 2015-03-04 |
| CN104386123B true CN104386123B (en) | 2017-02-22 |
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ID=52604111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410736594.2A Active CN104386123B (en) | 2014-12-05 | 2014-12-05 | Tractor and hydraulic steering system |
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| Country | Link |
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| CN (1) | CN104386123B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925129B (en) * | 2015-07-16 | 2017-11-10 | 潍柴动力股份有限公司 | Hydraulic steering system |
| CN105539574B (en) * | 2015-12-07 | 2017-09-26 | 中国北方车辆研究所 | Automobile back wheel turns to electronically controlled hydraulic system and its control method |
| CN109969257B (en) * | 2017-12-21 | 2021-07-20 | 北汽福田汽车股份有限公司 | Power steering system and vehicle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2663255Y (en) * | 2003-11-25 | 2004-12-15 | 东风新疆汽车有限公司 | Modified power-assisted hydraulic system of turning machine |
| CN100337870C (en) * | 2005-07-29 | 2007-09-19 | 浙江大学 | Duplex type hydraulic powered steering pump for automobile |
| KR101294406B1 (en) * | 2006-12-04 | 2013-08-08 | 두산인프라코어 주식회사 | Control device of speed of revolution of steering handle for wheel loader |
| CN203681648U (en) * | 2014-02-17 | 2014-07-02 | 福田雷沃国际重工股份有限公司 | Hydraulic steering control device for harvesting machine |
| CN204250153U (en) * | 2014-12-05 | 2015-04-08 | 衡阳合力工业车辆有限公司 | Tractor truck and hydrostatic steering system thereof |
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2014
- 2014-12-05 CN CN201410736594.2A patent/CN104386123B/en active Active
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| Publication number | Publication date |
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| CN104386123A (en) | 2015-03-04 |
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