CN106114615A - A kind of hydraulic steering system - Google Patents
A kind of hydraulic steering system Download PDFInfo
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- CN106114615A CN106114615A CN201610492676.6A CN201610492676A CN106114615A CN 106114615 A CN106114615 A CN 106114615A CN 201610492676 A CN201610492676 A CN 201610492676A CN 106114615 A CN106114615 A CN 106114615A
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- steering
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- wheel
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The present invention provides a kind of hydraulic steering system, and homonymy wheel has the higher synchronicity that turns to, and can provide bigger steering force.For achieving the above object, the invention provides a kind of hydraulic steering system, including with the all-hydraulic steering gear that steering wheel connects and the steering cylinder that be connected corresponding with each wheel, the piston rod of steering cylinder described in both sides is towards or away from extension, described all-hydraulic steering gear has oil-in, oil return opening and with described oil-in and the first actuator port of described oil return opening alternate communication and the second actuator port, described first actuator port connects with the left chamber of each described steering cylinder, described second actuator port connects with the right chamber of each described steering cylinder, described first actuator port and described second actuator port are isometric to the connecting pipeline of each described steering cylinder of homonymy.
Description
Technical field
The present invention relates to Vehicular turn technical field, particularly relate to a kind of hydraulic steering system.
Background technology
Refer to Fig. 1 and Fig. 2, Fig. 1 is the Facad structure schematic diagram of a kind of typical twin shaft steering in prior art；
Fig. 2 is the top view of twin shaft steering shown in Fig. 1.
As depicted in figs. 1 and 2, in prior art, twin shaft steering mainly includes that recirculating ball-type steering 1 ＇, hydraulic pressure help
Power cylinder 2 ＇ and transmission power, guide wheel trace rod member, these rod members include the first bar 3 ＇, the second bar 4 ＇, the 3rd
Bar 5 ＇, the 4th bar 6 ＇, the 5th bar 7 ＇, the 6th bar 8 ＇, the 7th bar 9 ＇；Steering relies on hydraulic booster to overcome the moment of resistance, it is achieved
Turn to.If complete vehicle quality is big, steering resisting moment is the biggest.For overcoming the big moment of resistance, it is necessary to increase the work of servohydraulic cylinder 2 ＇
Plug area, servohydraulic cylinder 2 ＇ piston area increases, and the flow of hydraulic system also will increase.
For the car load of big quality, turning to required big flow is that one is examined to the control valve in recirculating ball-type steering 1 ＇
Test, its occur outboard leak, in let out, the risk of the fault such as excess pressure increases.When vehicle does not turns to, big quantity of fluid is in systems
Circulate, cause oil liquid temperature to raise, reduce the reliability of system.And, prior art cannot be for axle load more than 18 tons
Steering spindle (including the axle load sum of double steering shaft) provides enough power steerings.
And, there is the technical problem of homonymy wheel steering poor synchronization in above-mentioned existing twin shaft steering:
On the one hand, for the steering spindle 10 away from recirculating ball-type steering 1 ＇, steering force passes through the first bar 3 ＇, the 3rd bar
5 ＇, the 4th bar 6 ＇, the 5th bar 7 ＇ and the 7th bar 9 ＇ are delivered to coupled wheel, and the bang path of steering force is greater than same
Another wheel of side, causes the steering force being transferred to homonymy wheel to there is time difference；
On the other hand, due to the hydraulic oil in servohydraulic cylinder 2 ＇ external in steering spindle 10, come from circulating ball type and turn
To device 1 ＇, controlled by control valve in recirculating ball-type steering 1 ＇；But, owing to existing long to the hydraulic oil pipeline of two steering spindles
It is poor to spend, and causes the power steering being transferred to two axles to there is time difference；
Furthermore, steering force there is also time difference with the passing time of power steering.
Visible, drawbacks described above makes the poor synchronization of current twin shaft steering homonymy wheel steering, it is impossible to meet big
Load vehicle turn to demand.
Therefore, how to design a kind of hydraulic steering system, to improve the synchronicity that turns to of homonymy wheel, and raising turns to
Power, becomes those skilled in the art and needs badly at present and solve the technical problem that.
Summary of the invention
It is an object of the invention to provide a kind of hydraulic steering system, homonymy wheel has the higher synchronicity that turns to, and energy
The steering force that enough offers are bigger.
For achieving the above object, the invention provides a kind of hydraulic steering system, all-hydraulic including be connected with steering wheel
Steering gear and the steering cylinder of connection corresponding with each wheel, the piston rod of steering cylinder described in both sides towards or away from extension,
Described all-hydraulic steering gear have oil-in, oil return opening and with described oil-in and the first work of described oil return opening alternate communication
Making hydraulic fluid port and the second actuator port, described first actuator port connects with the left chamber of each described steering cylinder, described second work
Hydraulic fluid port connects with the right chamber of each described steering cylinder, each institute of described first actuator port and described second actuator port to homonymy
The connecting pipeline stating steering cylinder is isometric.
The hydraulic steering system of the present invention, including with the all-hydraulic steering gear that steering wheel connects and with each wheel corresponding even
The steering cylinder connect, on the one hand, use all-hydraulic steering gear to replace existing recirculating ball-type steering ＇, it is achieved that all-hydraulic to drive
Move rather than carry out fluid control by control valve less in recirculating ball-type steering ＇, it is possible to achieve bigger fluid circulation
Amount, so meet heavy load steering spindle turn to demand；On the other hand, the first actuator port of all-hydraulic steering gear and the second work
Make hydraulic fluid port and by isometric connection oil circuit, hydraulic oil is delivered to each steering cylinder of homonymy, to synchronize to promote each steering oil of homonymy
The piston rod of cylinder stretches, and then drives wheel steering, now can ensure that the synchronicity of each wheel steering of homonymy, reduces and turn to
The time difference of power transmission.
Alternatively, described first actuator port is communicated with the first petroleum pipeline, and described first petroleum pipeline is by isometric first
Oil distributing pipe is communicated to the left chamber of each described steering cylinder of connection corresponding with the wheel in left side, by the second isometric oil distributing pipe even
Pass to the left chamber of each described steering cylinder of connection corresponding with the wheel on right side；
And/or, described second actuator port is communicated with the second petroleum pipeline, and described second petroleum pipeline is by isometric the 3rd point
Oil pipe is communicated to the right chamber of each described steering cylinder of connection corresponding with the wheel in left side, is connected by the 4th isometric oil distributing pipe
Right chamber to each described steering cylinder of connection corresponding with the wheel on right side.
Alternatively, described first petroleum pipeline has point oil mass of described first oil distributing pipe of regulation and described second oil distributing pipe
First position of splitter；
And/or, described second petroleum pipeline has point oil mass of described 3rd oil distributing pipe of regulation and described 4th oil distributing pipe
Second position of splitter.
Alternatively, described first position of splitter and/or described second position of splitter are flow control valve.
Alternatively, each described steering cylinder includes the left oil cylinder of connection corresponding with left side wheel and company corresponding with right side wheels
The right oil cylinder connect, the piston rod of each left oil cylinder extends to the left, and the piston rod of each described right oil cylinder extends to the right.
Alternatively, also include the knuckle arm being connected with each described wheel, be in knuckle arm described in adjacent the two of homonymy
Hinged by Drag link, it is in the described Drag link of homonymy for limiting each described knuckle arm of homonymy, so that homonymy
Each described wheel turns to around same center of rotation.
Alternatively, the described oil-in of described all-hydraulic steering gear is connected with oil pump by pressure-gradient control valve.
Alternatively, described pressure-gradient control valve includes oil-in, relief valve oil return opening, turns to hydraulic fluid port, priority acccess control mouth and interflow oil
Mouthful, described oil-in connects with oil pump, and described relief valve oil return opening connects with fuel tank, described in turn to hydraulic fluid port and described all-hydraulic turn
Connect to the described oil-in of device, the control port connection of the described described all-hydraulic steering gear of priority acccess control mouth, described interflow oil
Mouth connects with the work system of vehicle.
Alternatively, including two steering spindles, steering spindle described in two is respectively connected with two the described wheels in left and right, and connects and have point
Qu Dong the described steering cylinder of wheel described in the left and right sides.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of a kind of typical twin shaft steering in prior art；
Fig. 2 is the top view of twin shaft steering shown in Fig. 1；
Fig. 3 is the hydraulic steering system provided by the present invention hydraulic principle schematic diagram in a kind of detailed description of the invention；
Fig. 4 is the structural representation that in hydraulic steering system provided by the present invention, steering cylinder 1 is arranged in steering spindle；
Fig. 5 is the Facad structure schematic diagram of hydraulic steering system provided by the present invention；
Fig. 6 is the top view of hydraulic steering system provided by the present invention.
In Fig. 1-2:
Recirculating ball-type steering 1 ＇, servohydraulic cylinder 2 ＇, the first bar 3 ＇, the second bar 4 ＇, the 3rd bar 5 ＇, the 4th bar 6 ＇,
Five bar 7 ＇, the 6th bar 8 ＇, the 7th bar 9 ＇；
In Fig. 3-6:
Steering cylinder 1, all-hydraulic steering gear 2, pressure-gradient control valve 3, oil pump 4, fuel tank 5, knuckle arm 6, Drag link 7, second are defeated
Oil pipe the 8, the 3rd oil distributing pipe the 81, the 4th oil distributing pipe the 82, first petroleum pipeline the 9, first oil distributing pipe the 91, second oil distributing pipe 92, steering spindle
10, piston rod the 11, first actuator port M1, the second actuator port M2.
Detailed description of the invention
The invention provides a kind of hydraulic steering system, homonymy wheel has the higher synchronicity that turns to, and can provide
Bigger steering force.
Below in conjunction with accompanying drawing, the present invention is specifically introduced, in order to those skilled in the art accurate understanding present invention's
Technical scheme.
First, second word such as grade as herein described is only for distinguishing the two or more parts of same or like structure, or phase
Same or similar structure, does not indicates that the particular determination to order.
As herein described some be that exponential quantity is uncertain, the most plural multiple.
Left and right as herein described, be the most all with vehicle running state as reference, be in direction of traffic front for front, with
After front contrary direction is；At vehicle heading, be in left-hand side for a left side, be in dexter for the right side.
As shown in Figure 3 and Figure 4, the invention provides a kind of hydraulic steering system, all-hydraulic including be connected with steering wheel
Steering gear 2 and the steering cylinder 1 of connection corresponding with each wheel, the connection that each wheel is corresponding has for driving what it turned to turn to
Oil cylinder 1, is in the piston rod 11 of described steering cylinder 1 of the left and right sides in opposite directions or opposing extension, the embodiment party shown in Fig. 3
In formula, it is in the opposing extension of piston rod 11 of the steering cylinder 1 of the left and right sides；All-hydraulic steering gear 2 can be provided with oil-in and
Oil return opening, for input or output hydraulic pressure oil, is additionally provided with the first actuator port M1 and the second actuator port M2, wherein, first
Actuator port M1 connects with the left chamber of each steering cylinder 1, and the second actuator port M2 connects with the right chamber of each steering cylinder 1, in order to
The direction of motion of each steering cylinder 1 inner piston rod 11 is controlled, it is achieved car by the first actuator port M1 and the second actuator port M2
Turn to the left or to the right.Synchronicity is turned to for improve homonymy wheel, so that the first actuator port M1 and each turn of homonymy
The isometric setting of connecting pipeline to oil cylinder 1, and make the connecting pipeline of the second actuator port M2 steering cylinder each with homonymy 1 isometric
Arrange, and then realize hydraulic oil along roughly equal delivery pathways to each steering cylinder 1 so that each wheel of homonymy synchronizes to turn
To, improve and turn to synchronicity.
Use said structure, on the one hand, use all-hydraulic steering gear 2 to instead of recirculating ball-type steering of the prior art
1 ＇, instead of mechanical type course changing control of the prior art by all-hydraulic mode, and all-hydraulic steering gear 2 now is equivalent to one
Individual hydraulic valve, it is possible to realize the books circulation amount of hydraulic oil, so meet heavy load turn to demand.On the other hand, all-hydraulic turn
The first actuator port M1 and the second actuator port M2 to device 2 is communicated to each steering oil of homonymy by isometric connecting pipeline
Cylinder 1, to control each steering cylinder 1 that is delivered to that hydraulic oil substantially synchronizes, and then turns to synchronicity by homonymy wheel, it is to avoid
Turn to reliability because poor synchronization reduces, and then improve the security reliability turned to.
In the embodiment shown in Fig. 3, each steering cylinder 1 includes the left oil that the wheel with left side is connected one to one
Cylinder, and the right oil cylinder being connected one to one with the wheel on right side, the piston rod 11 of each left oil cylinder stretches out to the left, each right oil cylinder
Piston rod 11 stretches out to the right；Now, the first actuator port M1 connects with the non-plunger shaft of the plunger shaft of left oil cylinder and right oil cylinder, the
Two actuator port M2 connect with the non-plunger shaft of left oil cylinder and the plunger shaft of right oil cylinder, the first actuator port M1 oil-feed, the second work
When making hydraulic fluid port M2 oil return, wheel can be driven to turn to the left, when the first actuator port M1 oil return, the second actuator port M2 oil-feed,
Wheel is driven to turn to the right.
In this kind of set-up mode, the opposing setting of piston rod 11, preferably can be connected with wheel by piston rod 11, enter
And improve the controllability of wheel steering, improve and turn to precision.
It is understood that those skilled in the art can also select to set the piston rod 11 of left oil cylinder and right oil cylinder in opposite directions
Putting, the piston rod 11 of the most left oil cylinder extends to the right, and the piston rod 11 of right oil cylinder extends to the left.
As a example by the embodiment shown in Fig. 3, the one way in which of setting isometric to connecting pipeline is specifically described.
For realizing the isometric setting of connecting pipeline, the first actuator port M1 of the present invention can be communicated with the first petroleum pipeline 9,
Then the outfan at the first petroleum pipeline 9 connects some first oil distributing pipes 91, each first isometric setting of oil distributing pipe 91, then passes through
Each first oil distributing pipe 91 is communicated to the left chamber of left oil cylinder；Meanwhile, the first petroleum pipeline 9 can also connect the second of some isometric settings
Oil distributing pipe 92, is then connected with the left chamber of right oil cylinder by each second oil distributing pipe 92.
Specifically, the first petroleum pipeline 9 can arrange a split point, then with each left oil cylinder positions generally equidistant
Connect multiple-way valve at this split point, and select the first isometric oil distributing pipe 91 to connect with the left chamber of left oil cylinder, select isometric the
Two oil distributing pipes 92 connect with the left chamber of right oil cylinder.
In like manner, the second actuator port M2 can be communicated with the second petroleum pipeline 8, and the second petroleum pipeline 8 can be by isometric the
Three oil distributing pipes 81 are communicated to the right chamber of each left oil cylinder, are communicated to the right chamber of each right oil cylinder by the 4th isometric oil distributing pipe 82.Its
Only, the second petroleum pipeline 8 is referred to above-mentioned first petroleum pipeline 9 and arranges, and the 3rd oil distributing pipe 81 is referred to the first oil distributing pipe 91 and sets
Putting, the 4th oil distributing pipe 82 is referred to the second oil distributing pipe 92 and arranges, and the most no longer describes in detail.
Using aforesaid way, the first petroleum pipeline 9 connects some isometric first connections of formation with each first oil distributing pipe 91
Pipeline, the first petroleum pipeline 9 connects some the second isometric connecting pipelines of formation, the second petroleum pipeline 8 with each second oil distributing pipe 92
Some articles of isometric third connecting pipes of formation, the second petroleum pipeline 8 and each 4th oil distributing pipe 82 is connected with each 3rd oil distributing pipe 81
Connection forms some articles of the 4th isometric connecting pipelines.It is to say, isometric the referring to of connecting pipeline is located in homonymy steering cylinder 1
In the same side oil pocket connection pipeline isometric, the i.e. first actuator port M1 to left side the connecting pipeline of each steering cylinder 1 isometric,
Isometric to the connecting pipeline of each steering cylinder 1 on right side；Second actuator port M2 is the connecting pipeline phase of each steering cylinder 1 to left side
Deng, meanwhile, the most equal to the connecting pipeline of each steering cylinder 1 on right side；And do not require the first connecting pipeline, the second communicating pipe
In road, third connecting pipe and the 4th connecting pipeline arbitrarily both are isometric.
On this basis, the first petroleum pipeline 9 may be provided for regulating the first oil distributing pipe 91 and the second oil distributing pipe 92
First position of splitter of point oil mass, to regulate hydraulic oil to the first oil distributing pipe 91 and point oil mass of the second oil distributing pipe 92, and then control
The wheel of the left and right sides turns to the turning velocity of predetermined relationship and the steering angle of predetermined relationship, improves the coordination turned to
Ability.
In like manner, the second petroleum pipeline 8 can also be provided with regulation the 3rd oil distributing pipe 81 and the 4th oil distributing pipe 82 point oil mass the
Two position of splitter, are specifically referred to the first position of splitter and are configured.
This first position of splitter and the second position of splitter can be the parts that flow is controlled by flow control valve etc., specifically may be used
To arrange with reference to prior art.
As it is shown on figure 3, the first petroleum pipeline 9 may be at the left side of left oil cylinder, the second petroleum pipeline 8 may be at right oil cylinder
Right side, in order to simplify the transfer passage of oil circuit.
On the basis of the above, during Vehicular turn, in order to ensure that the homonymy wheel of each steering spindle 10 is around same theoretically
Center of rotation rotates, and the steering angle of homonymy wheel must keep certain proportionate relationship.In the prior art, this ratio is closed
System is that the linkage consisted of the first bar 3 ＇, the 3rd bar 5 ＇, the 4th bar 6 ＇, the 6th bar 8 ＇ and the 7th bar 9 ＇ realizes.But
It is that the structure of this linkage is complicated；And, in order to ensure to assemble, that be spent, only be improved the accuracy of manufacture of each rod member, or
Person increases size apolegamy in assembly process, and both modes all can increase cost.
For above-mentioned technical problem, the present invention achieves each wheel of homonymy by simple knuckle arm 6 with Drag link 7 and turns
To the control of angular dependence.
Incorporated by reference to Fig. 5 and Fig. 6, present invention additionally comprises the knuckle arm 6 being connected with each wheel, be in homonymy and adjacent two
Individual knuckle arm 6 is articulated and connected by Drag link 7, i.e. the front end of Drag link 7 is hinged with the knuckle arm 6 being in front, rear end
Hinged, as shown in Figure 5 and Figure 6 with the knuckle arm 6 being in its rear；The Drag link 7 being in the same side is each for limiting homonymy
The rotation of knuckle arm 6, and then make each wheel of homonymy can carry out turning around same center of rotation by knuckle arm 6
To.
The version of Drag link 7 and the structure of each knuckle arm 6, Drag link 7 and the concrete connection side of knuckle arm 6
Formula, knuckle arm 6 all can be configured as required with the annexation of wheel, so that each wheel of homonymy can be around same
One center of rotation turns to, and concrete mode refer to prior art, the most no longer enumerates.
Referring once again to Fig. 3, in the embodiment shown in Fig. 3, it is also possible to be provided with pressure-gradient control valve 3 so that hydro-steering
The oil-in of device 2 is connected with oil pump 4 by pressure-gradient control valve 3.
In detail, pressure-gradient control valve 3 can include oil inlet P, relief valve oil return inlet T, turn to hydraulic fluid port CF, priority acccess control mouth LS and
Interflow hydraulic fluid port EF, its oil inlet P connects with oil pump 4, and relief valve oil return inlet T connects with fuel tank 5, turns to hydraulic fluid port CF and all-hydraulic turn
Connecting to the oil-in of device 2, priority acccess control mouth LS connects with the control port of all-hydraulic steering gear 2, interflow hydraulic fluid port EF and vehicle
Work system connection.
Wherein, the operation principle of this pressure-gradient control valve 3 is as follows:
When oil inlet P oil-feed, hydraulic oil is through the spool of pressure-gradient control valve 3, and priority of supply is to turning to hydraulic fluid port CF.When all-hydraulic turn
When device 2 does not works, turning to hydraulic fluid port CF to be in closed state, now, the pressure of priority acccess control mouth LS is zero, and spool right-hand member enters
Oil, action of hydraulic force at spool right-hand member, overcomes the precompression of spring, makes spool be moved to the left, and oil inlet P is with interflow hydraulic fluid port EF even
Logical, the fluid that oil pump 4 pumps out collaborates in the work system of vehicle, thus realizes Dual-pump flow-converging.When all-hydraulic steering gear 2 works
Time, turn to hydraulic fluid port CF to be connected with steering cylinder 1 through all-hydraulic steering gear 2, the next oily entrance steering cylinder 1 of oil pump 4, make vehicle turn
To；The pressure signal of priority acccess control mouth LS acts on the left end of spool by throttling pore, and now the pressure of spool right-hand member is more complete
The pressure of hydraulic steering gear 2 outlet is low, due to change and the effect of spring of two ends, spool left and right pressure reduction, works as all-hydraulic steering gear
When 2 rotating speeds are the biggest so that spool moves right to closedown, and hydraulic oil preferentially supplies and turns to.When steering-load overrate,
The pressure oil of priority acccess control mouth LS makes the relief valve that turns to of pressure-gradient control valve 3 open, and priority acccess control mouth LS is entered by relief valve oil return opening
Row release, spool moves to left, in the next oily interflow of oil pump 4 to work system.When work system does not works, in pressure-gradient control valve 3
Position carries out off-load.
The hydraulic steering system of the present invention can be dual-axle hydraulic steering, i.e. can include two steering spindles 10, two
The left and right sides of steering spindle 10 is respectively connected with wheel, and each wheel is connected to drive the steering cylinder 1 each carrying out turning to.
It should be noted that the most only illustrate as a example by two steering spindles 10, when needs arrange multiple steering spindle 10
Time can also be configured with reference to twin shaft, but need hydraulic pressure oil mass is regulated accordingly.
Additionally, due to Fig. 3 is schematic diagram, thus unequal from the first oil distributing pipe 91 shown in Fig. 3, the second oil distributing pipe 92,
3rd oil distributing pipe 81 and the 4th oil distributing pipe 82 are the most unequal, but actual should use equal structure when arranging.
Above hydraulic steering system provided by the present invention is described in detail.Specific case used herein is to this
Principle and the embodiment of invention are set forth, and the explanation of above example is only intended to help to understand that the core of the present invention is thought
Think.It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, also may be used
So that the present invention is carried out some improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.
Claims (9)
1. a hydraulic steering system, it is characterised in that include the all-hydraulic steering gear (2) that is connected with steering wheel and with each car
The steering cylinder (1) that wheel correspondence connects, the piston rod (11) of steering cylinder (1) described in both sides towards or away from extension, described entirely
Hydraulic steering gear (2) has oil-in, oil return opening and works with the first of described oil-in and described oil return opening alternate communication
Hydraulic fluid port (M1) and the second actuator port (M2), described first actuator port (M1) connects with the left chamber of each described steering cylinder (1),
Described second actuator port (M2) connects with the right chamber of each described steering cylinder (1), described first actuator port (M1) and described
Second actuator port (M2) is isometric to the connecting pipeline of each described steering cylinder (1) of homonymy.
2. hydraulic steering system as claimed in claim 1, it is characterised in that described first actuator port (M1) is communicated with first
Petroleum pipeline (9), described first petroleum pipeline (9) is communicated to connect corresponding with the wheel in left side by isometric the first oil distributing pipe (91)
The left chamber of each described steering cylinder (1), be communicated to connect corresponding with the wheel on right side by isometric the second oil distributing pipe (92)
The left chamber of each described steering cylinder (1)；
And/or, described second actuator port (M2) is communicated with the second petroleum pipeline (8), and described second petroleum pipeline (8) is by isometric
3rd oil distributing pipe (81) is communicated to the right chamber of each described steering cylinder (1) of connection corresponding with the wheel in left side, by isometric
4th oil distributing pipe (82) is communicated to the right chamber of each described steering cylinder (1) of connection corresponding with the wheel on right side.
3. hydraulic steering system as claimed in claim 2, it is characterised in that it is described that described first petroleum pipeline (9) has regulation
First position of splitter of point oil mass of the first oil distributing pipe (91) and described second oil distributing pipe (92)；
And/or, described second petroleum pipeline (8) has and regulates dividing of described 3rd oil distributing pipe (81) and described 4th oil distributing pipe (82)
Second position of splitter of oil mass.
4. hydraulic steering system as claimed in claim 3, it is characterised in that described first position of splitter and/or described second point
Stream part is flow control valve.
5. hydraulic steering system as claimed in claim 1, it is characterised in that each described steering cylinder (1) includes and left side car
The left oil cylinder of wheel correspondence connection and the right oil cylinder of connection corresponding with right side wheels, the piston rod (11) of each left oil cylinder prolongs to the left
Stretching, the piston rod (11) of each described right oil cylinder extends to the right.
6. the hydraulic steering system as described in any one of claim 1-5, it is characterised in that also include being connected with each described wheel
Knuckle arm (6), be in knuckle arm (6) described in adjacent the two of homonymy by Drag link (7) hinged, be in the described of homonymy
Drag link (7) is for limiting each described knuckle arm (6) of homonymy, so that each described wheel of homonymy is around same center of rotation
Turn to.
7. hydraulic steering system as claimed in claim 6, it is characterised in that the described oil-feed of described all-hydraulic steering gear (2)
Mouth is connected with oil pump (4) by pressure-gradient control valve (3).
8. hydraulic steering system as claimed in claim 7, it is characterised in that described pressure-gradient control valve (3) includes oil-in, relief valve
Oil return opening, turn to hydraulic fluid port, priority acccess control mouth and interflow hydraulic fluid port, described oil-in connects with oil pump (4), described relief valve oil return opening
Connect with fuel tank (5), described in turn to hydraulic fluid port to connect with the described oil-in of described all-hydraulic steering gear (2), described priority acccess control
Mouth connects with the control port of described all-hydraulic steering gear (2), and described interflow hydraulic fluid port connects with the work system of vehicle.
9. hydraulic steering system as claimed in claim 6, it is characterised in that include two steering spindles (10), turn to described in two
Axle (10) is respectively connected with two the described wheels in left and right, and connects and have the described steering cylinder driving wheel described in the left and right sides respectively
(1)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492676.6A CN106114615B (en) | 2016-06-28 | 2016-06-28 | A kind of hydraulic steering system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492676.6A CN106114615B (en) | 2016-06-28 | 2016-06-28 | A kind of hydraulic steering system |
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| CN106114615A true CN106114615A (en) | 2016-11-16 |
| CN106114615B CN106114615B (en) | 2019-02-12 |
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| CN201610492676.6A Active CN106114615B (en) | 2016-06-28 | 2016-06-28 | A kind of hydraulic steering system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083661A (en) * | 2018-09-19 | 2018-12-25 | 中国铁建重工集团有限公司 | A kind of steering system and method for concrete spraying trolley |
| CN112977605A (en) * | 2021-04-01 | 2021-06-18 | 内蒙古铁辰智能装备有限公司 | Drive-by-wire full hydraulic steering system for unmanned mining vehicle |
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| CN205292781U (en) * | 2016-01-25 | 2016-06-08 | 一拖(新疆)东方红装备机械有限公司 | Hydraulic pressure four wheel steering system and machinery vehicle suitable for highland crack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109083661A (en) * | 2018-09-19 | 2018-12-25 | 中国铁建重工集团有限公司 | A kind of steering system and method for concrete spraying trolley |
| CN112977605A (en) * | 2021-04-01 | 2021-06-18 | 内蒙古铁辰智能装备有限公司 | Drive-by-wire full hydraulic steering system for unmanned mining vehicle |
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| CN106114615B (en) | 2019-02-12 |
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