CN103419836B - The control method of vehicle steering device and this vehicle steering device - Google Patents

The control method of vehicle steering device and this vehicle steering device Download PDF

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Publication number
CN103419836B
CN103419836B CN201210149118.1A CN201210149118A CN103419836B CN 103419836 B CN103419836 B CN 103419836B CN 201210149118 A CN201210149118 A CN 201210149118A CN 103419836 B CN103419836 B CN 103419836B
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China
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described
connected
2nd
steering mechanism
vehicle
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CN201210149118.1A
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CN103419836A (en
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徐加凌
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北汽福田汽车股份有限公司
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Abstract

The present invention provides a kind of control method of vehicle steering device and this vehicle steering device, and this vehicle steering device comprises: turn to operating mechanism; Assistant steering mechanism, operating mechanism is connected assistant steering mechanism with turning to; Turn to transmission rig, turn to transmission rig to be connected with the wheel of vehicle with assistant steering mechanism; And emergent assistant steering mechanism, emergent assistant steering mechanism comprises the two-way function oil cylinder with the first chamber and the 2nd chamber, two-way function oil cylinder with turn to transmission rig be connected with the follow-up steering transmission rig when assistant steering mechanism works and when assistant steering mechanism stopping work drive turn to transmission rig action that wheel is turned to, the vehicle steering device of the present invention, can promptly provide power steering when assistant steering mechanism lost efficacy by emergent turning device, ensure the safety of vehicle. In addition, adopt two-way function oil cylinder can ensure less overall dimensions, convenient design and the arrangement saving space installing and be vehicle structure.

Description

The control method of vehicle steering device and this vehicle steering device

Technical field

The present invention relates to automotive field, specifically, it relates to a kind of control method of vehicle steering device and vehicle steering device.

Background technology

Regulation in " GB/T7258 " " with the 10km/h speed of a motor vehicle, 24m turning diameter moves ahead when turning, and when band power-assisted steering but power-assisted lose efficacy, its steering force should be less than 588N, and opening time must not be greater than 6 seconds ". Particularly for heavy vehicle, if assistant steering mechanism lost efficacy, driving person is difficult to the steering wheel rotation when non helping hand and, to control Vehicular turn, is very easy to cause traffic jam even traffic accident, it is thus desirable to the emergent assistant steering mechanism of vehicle set.

In order to meet this regulation, the structure usually adopted is: fastens at vehicle wheel rotation and draws power mouth, adds two-way radial plunger pump, in parallel with engine steering pump by interflow valve, to ensure that system need to use flow. But this kind of structure needs that performance is suitable, the two-way radial plunger pump of reliable in quality, if not having suitable bidirectional ram pump, this function cannot realize. The price of existing ram pump is usually very high, and when using bidirectional ram pump, it is necessary to the specific vehicle bridge supporting with bidirectional ram pump, and bidirectional ram pump reliability in use is not high.

Summary of the invention

The present invention is intended to one of technical problem at least solving existence in prior art.

In view of this, the present invention needs to provide a kind of vehicle steering device that can provide emergent power steering.

In addition, the present invention also provides a kind of control method of above-mentioned vehicle steering device.

The vehicle steering device of embodiment according to an aspect of the present invention, comprising: turn to operating mechanism;Assistant steering mechanism, described assistant steering mechanism turns to operating mechanism to be connected with described; Turn to transmission rig, described in turn to transmission rig to be connected with the wheel of vehicle with described assistant steering mechanism; And emergent assistant steering mechanism, described emergent assistant steering mechanism comprises the two-way function oil cylinder with the first chamber and the 2nd chamber, and described two-way function oil cylinder turns to transmission rig be connected to turn to transmission rig described in servo-actuated when described assistant steering mechanism works and turn to transmission rig action that described wheel is turned to described in driving when described assistant steering mechanism stopping work with described.

Vehicle steering device according to embodiments of the present invention, emergent turning device can promptly provide power steering when assistant steering mechanism lost efficacy, and ensures the safety of vehicle. In addition, adopt two-way function oil cylinder can ensure less overall dimensions than other drive units (such as cylinder etc.), convenient design and the arrangement saving space installing and be vehicle structure. Finally, the structure of two-way function oil cylinder is simple, and implementation cost is lower, and reliability height during work.

In addition, vehicle steering device according to embodiments of the present invention can also have following additional technical feature:

According to one embodiment of present invention, described emergent assistant steering mechanism also comprises the distribution valve being connected with described two-way function oil cylinder and the energy storage canister being connected with described distribution valve, first and second chambeies of described two-way function oil cylinder are connected when described assistant steering mechanism works and described distribution valve is in the first location disconnecting between described energy storage canister and described two-way function oil cylinder and being connected, described first and second chambeies disconnect connection when described assistant steering mechanism stopping work and described distribution valve is in the second position that described energy storage canister is connected or the 3rd position that described energy storage canister is connected with described 2nd chamber with described first chamber, with to described first chamber or the 2nd chamber oiling thus make the piston of described two-way function oil cylinder to described 2nd cavity direction motion or to described first cavity direction motion.

According to one embodiment of present invention, described emergent assistant steering mechanism also comprises the magnetic valve of control described distribution valve position switching.

According to one embodiment of present invention, described emergent assistant steering mechanism also comprises: the first diverting valve, and described first diverting valve is connected with described energy storage canister; Hydro-pump, described hydraulic pressure pump outlet is connected with described first diverting valve; 2nd diverting valve, described 2nd diverting valve is connected with the entrance of described hydro-pump; And emergent turn to energy storage canister, described meeting an urgent need turns to the outlet of energy storage canister to be connected with described 2nd diverting valve, entrance is connected with described distribution valve, wherein when described first diverting valve and the 2nd diverting valve are switched to the first oil circuit, described hydro-pump turns to energy storage canister to pumps hydraulic oil in described energy storage canister from described meeting an urgent need, when described first diverting valve and the 2nd diverting valve are switched to the 2nd oil circuit, described hydro-pump is to described assistant steering mechanism pumps hydraulic oil.

According to one embodiment of present invention, described emergent assistant steering mechanism also comprises and is located at described 2nd diverting valve and described emergent turns to the strainer between energy storage canister.

According to one embodiment of present invention, helium is equipped with described energy storage canister.

According to one embodiment of present invention, described in turn to transmission rig to comprise: straight pull bar, one end of described straight pull bar is connected pivotly with described assistant steering mechanism; First rocking arm, the lower end of described first rocking arm pivotly the other end with described straight pull bar be connected, the upper end of described first rocking arm can pivotable be connected with the vehicle frame of described vehicle;First turns to straight pull bar, and described first turns to one end of straight pull bar can pivotable to be connected with the lower end of described first rocking arm;

First knuckle arm, described first knuckle arm turns to the other end of straight pull bar pivotable to be connected with described first;

2nd rocking arm, the lower end of described 2nd rocking arm is connected with described two-way function oil cylinder pivotly, and the described upper end of the 2nd rocking arm can pivotable be connected with the vehicle frame of described vehicle; 2nd turns to straight pull bar, and the described 2nd turns to one end of straight pull bar can pivotable to be connected with the lower end of described 2nd rocking arm; And the 2nd knuckle arm, described 2nd knuckle arm turns to the other end of straight pull bar pivotable to be connected with the described 2nd.

According to one embodiment of present invention, the piston rod of described two-way function oil cylinder is connected with the lower end of described 2nd rocking arm and the inboardend of described two-way function oil cylinder is arranged on the vehicle frame of described vehicle.

According to one embodiment of present invention, described first rocking arm is connected by connecting rod with described 2nd rocking arm.

The control method of the vehicle steering device of embodiment according to a further aspect of the invention, comprises the following steps:

Judge whether assistant steering mechanism works; If assistant steering mechanism work; be connected described two-way function oil cylinder the first and second chambeies and not to one of described first and second chambeies fuel feeding; And if assistant steering mechanism stopping work, disconnect described first and second chambeies connection and to one of described first and second chambeies in fuel feeding so that described two-way function oil cylinder turns to transmission rig to make wheel turn to described in by driving.

The control method of vehicle steering device according to embodiments of the present invention, when assistant steering mechanism lost efficacy for turning to transmission rig promptly to provide power steering, can ensure vehicle safety by two-way function oil cylinder. The control method steps of the vehicle steering device of the present invention is simple in addition and operation is reliable.

The additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by the practice of the present invention.

Accompanying drawing explanation

Above-mentioned and/or the additional aspect of the present invention and advantage from accompanying drawing below combining to the description of embodiment becoming obviously and it should be readily understood that wherein:

Fig. 1 shows the schematic front view of vehicle steering device according to one embodiment of present invention;

Fig. 2 shows the schematic top plan view of vehicle steering device according to one embodiment of present invention;

Fig. 3 shows the perspective view of vehicle steering device according to one embodiment of present invention;

Fig. 4 shows the principle of work schematic diagram of the emergent assistant steering mechanism of vehicle steering device according to one embodiment of present invention; And

Fig. 5 shows the schema of control method for vehicle according to one embodiment of present invention.

Embodiment

Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish. It is exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and limitation of the present invention can not be interpreted as.

In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", it is based on orientation shown in the drawings or position relation that the orientation of the instruction such as " outward " or position are closed, it is only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device referred to or element must have specific orientation, with specific orientation structure and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " the 2nd " are only for describing object, and can not be interpreted as instruction or hint relative importance.

In describing the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, it is possible to be fixedly connected with, it is also possible to be removably connect, or connect integratedly; Can be mechanically connected, it is also possible to be electrical connection; Can be directly be connected, it is also possible to be indirectly connected by intermediary, it is possible to be the connection of two element internals. For the ordinary skill in the art, it is possible to particular case understands above-mentioned term concrete implication in the present invention.

As Figure 1-3, vehicle steering device according to an embodiment of the invention, comprising: turns to operating mechanism 10, assistant steering mechanism 20, turn to transmission rig 30 and emergent assistant steering mechanism 40.

Specifically, turning to operating mechanism 10 can comprise bearing circle (not shown), turning to of vehicle can be controlled by the driving person of vehicle by control bearing circle.

Operating mechanism 10 is connected assistant steering mechanism 20 with turning to, so that turning to of vehicle can more easily be controlled by vehicle driver.

Transmission rig 30 is turned to be connected with the wheel (not shown) of vehicle with assistant steering mechanism 20, so that vehicle driver controls the rotation of wheel by assistant steering mechanism 20.

Emergent assistant steering mechanism 40 comprises the two-way function oil cylinder 41 with the first chamber 411 and the 2nd chamber 412, transmission rig 30 is connected two-way function oil cylinder 41 with turning to, so that when assistant steering mechanism 20 works, assistant steering mechanism 20 drives and turns to transmission rig 30, thus drive two-way function oil cylinder 41, namely two-way function oil cylinder 41 is driven in and turns to transmission rig 30, and itself does not drive and turn to transmission rig 30. On the other hand, when assistant steering mechanism 20 stops work, two-way function oil cylinder 41 drives and turns to transmission rig 30 action that wheel is turned to.

In other words, two-way function oil cylinder 41 has the first chamber 411 and the 2nd chamber 412, two-way function oil cylinder 41 can transmission rig 30 be connected with turning to by piston rod 413, when assistant steering mechanism 20 normal operation, piston rod 413 can with turning to transmission rig 30 servo-actuated, piston rod 413 is not done work by oil cylinder 41, and the wheel of vehicle is turned to and do not work by the piston rod 413 of two-way function oil cylinder 41. When assistant steering mechanism 20 cannot normal operation time, and vehicle is when needing to turn to, officer can start two-way function oil cylinder 41 as required makes piston rod 413 move along required direction, in moving process, piston rod 413 drives and turns to transmission rig 30 action, so that the wheel of vehicle turns to.

Vehicle steering device according to embodiments of the present invention, emergent turning device 40 can promptly provide power steering when assistant steering mechanism 20 lost efficacy, and ensures the safety of vehicle. In addition, adopt two-way function oil cylinder 41 can ensure less overall dimensions than other drive units (such as cylinder etc.), convenient design and the arrangement saving space installing and be vehicle structure. Finally, the structure of two-way function oil cylinder 41 is simple, and implementation cost is lower, and reliability height during work.

As shown in Figure 4, according to one embodiment of present invention, emergent assistant steering mechanism 40 also comprises distribution valve 42, energy storage canister 43, first diverting valve 44, hydro-pump 45, the 2nd diverting valve 46 and emergent turns to energy storage canister 47.

Specifically, distribution valve 42 is connected with two-way function oil cylinder 41, energy storage canister is connected with distribution valve 42, first diverting valve 44 is connected with energy storage canister 43, the outlet of hydro-pump 45 is connected with the first diverting valve 44 and the entrance of hydro-pump 45 is connected with the 2nd diverting valve 46, emergent turns to the outlet of energy storage canister 47 to be connected with the 2nd diverting valve 46 and meet an urgent need to turn to the entrance of energy storage canister 47 to be connected with distribution valve 42.

When vehicle is under parking non-emergency conditions, if when the pressure in energy storage canister 43 does not reach preset pressure, first diverting valve 44 and the 2nd diverting valve 46 are switched to the first oil circuit, the i.e. left side oil circuit of the first diverting valve 44 and the 2nd diverting valve 46 in Fig. 4, hydro-pump 45 starts to turn in energy storage canister 47 oil pumping in energy storage canister 43 by the first oil circuit pumps hydraulic oil from emergent. After the pressure in energy storage canister 43 reaches preset pressure value, first diverting valve 44 and the 2nd diverting valve 46 are switched to the 2nd oil circuit, the i.e. right side oil circuit of the first diverting valve 44 and the 2nd diverting valve 46, hydro-pump 45 stops to energy storage canister 43 pump oil, and to assistant steering mechanism 20 pumps hydraulic oil. Therefore, in energy storage canister 43, the enough pressure of normal maintenance is prepared against when emergent turning to two-way function oil cylinder 41 conveying liquid force feed.

In first and second chambeies 411,412 of two-way function oil cylinder 41, hydraulic efficiency oil is all housed, and two-way function oil cylinder 41 has two the first corresponding with the first chamber and the 2nd chamber respectively oil mouths 414 and the 2nd oil mouth 415. First and second chambeies 411,412, first oil mouth 414 when assistant steering mechanism 20 works is connected with the 2nd oil mouth 415 and two chambeies 411,412 is connected, and distribution valve 42 is in the first location (as shown in Figure 4) disconnecting between energy storage canister 43 and two-way function oil cylinder 41 and being connected. Therefore, when assistant steering mechanism 20 driving turns to transmission rig 30, the hydraulic efficiency oil in two-way function oil cylinder 41 flows at two cavity circulation, makes two-way function oil cylinder 41 follow-up steering transmission rig 30, not to turning to transmission rig 30 to do work.

First and second chambeies 411,412 of two-way function oil cylinder 41 are when assistant steering mechanism 20 stops work, disconnecting, by distribution valve 42, the second position that the first oil mouth 414 is in energy storage canister 43 and is connected with the first of the first chamber 411 the oily mouth 414 with the 2nd oil connection of mouth 415 and distribution valve 42, such as the distribution valve 42 shown in Fig. 4 moves down. Now energy storage canister 43 is to injection liquid force feed in the first chamber 411, to promote the piston (not shown) of two-way function oil cylinder 41 to move to the 2nd direction, chamber 412, thus piston rod 413 is driven and turns to the wheel of transmission rig 30 to rotate to a direction, such as turn left. When piston promotes to the 2nd direction, chamber 412, the hydraulic efficiency oil in the 2nd chamber 412 flows back to emergent turning in energy storage canister 47 by the 2nd oil mouth 415.

On the other hand, first and second chambeies 411,412 of two-way function oil cylinder 41 are when assistant steering mechanism 20 stops work, equally disconnect being connected of the first oil mouth 414 and the 2nd oil mouth 415 by distribution valve 42, such as, but distribution valve 42 is in the 3rd position that energy storage canister 43 is connected with the 2nd oil mouth in the 2nd chamber 412, and the distribution valve 42 shown in Fig. 4 moves up. Now energy storage canister 43 is to injection liquid force feed in the 2nd chamber 412, to promote the piston (not shown) of two-way function oil cylinder 41 to move to the first direction, chamber 411, thus piston rod 413 is driven and turns to the wheel of transmission rig 30 to rotate to another direction, such as turn right.When piston promotes to the first direction, chamber 411, the hydraulic efficiency oil in the first chamber 411 flows back to emergent turning in energy storage canister 47 by the first oil mouth 414.

Emergent assistant steering mechanism 40 also comprises the magnetic valve (not shown) of control distribution valve 42 position switching, magnetic valve can control distribution valve 42 according to the action of vehicle driver and be switched to the second position or the 3rd position, to ensure in the idle situation of assistant steering mechanism 20, two-way function oil cylinder 41 still can drive and turn to transmission rig 30 to provide motivating force.

Emergent assistant steering mechanism 40 can also comprise the strainer 48 being located at the 2nd diverting valve 46 and meeting an urgent need and turn between energy storage canister 47, to keep the cleaning of hydraulic efficiency oil.

Preferably, in energy storage canister 47, inject helium in advance, thus improve the energy storage effect of energy storage canister 47.

As Figure 1-3, according to this method embodiment, transmission rig 30 is turned to comprise: straight pull bar 31, first rocking arm 32, first turns to straight pull bar 33, first knuckle arm 34, the 2nd rocking arm 35, the 2nd to turn to straight pull bar 36 and the 2nd knuckle arm 37.

Specifically, one end of straight pull bar 31 is connected pivotly with assistant steering mechanism 20. The lower end of the first rocking arm 32 pivotly the other end with straight pull bar 31 be connected, the upper end of the first rocking arm 32 can pivotable be connected with the vehicle frame (bridge) of vehicle, and first turns to one end of straight pull bar 33 can pivotable to be connected with the lower end of the first rocking arm 32. First knuckle arm 34 turns to the other end of straight pull bar 33 pivotable to be connected with first.

The lower end of the 2nd rocking arm 35 is connected with the piston rod 413 of two-way function oil cylinder 41 pivotly, the upper end of the 2nd rocking arm 35 can pivotable be connected with the vehicle frame (two bridges) of vehicle, 2nd turns to one end of straight pull bar 36 can pivotable to be connected with the lower end of the 2nd rocking arm 35, and the 2nd knuckle arm 37 turns to the other end of straight pull bar 36 pivotable to be connected with the 2nd. First rocking arm 32 is connected by connecting rod 38 with the 2nd rocking arm 35, to form linkage.

When assistant steering mechanism 20 drives straight pull bar 31 to drive the first rocking arm 32, then first is driven to turn to straight pull bar 33 by the first rocking arm 32, turn to straight pull bar 33 to drive the first knuckle arm 34 by first again, thus rotate the wheel being connected with the first knuckle arm 34, such as front-wheel. On the other hand, first rocking arm 32 drives the 2nd rocking arm 35 by connecting rod 38, then drives the 2nd to turn to straight pull bar 36 by the 2nd rocking arm 35, then turns to straight pull bar 36 to drive the 2nd knuckle arm 37 by the 2nd, thus rotate the wheel being connected with the 2nd knuckle arm 37, such as trailing wheel.

When assistant steering mechanism 20 does not work, two-way function oil cylinder 41 drives the 2nd rocking arm 35 by piston rod 413, thus drives the wheel being connected with knuckle arm 37. First rocking arm 32 is then linked by connecting rod 38 and the 2nd rocking arm 35, thus drives the wheel being connected with the first knuckle arm 34.

The inboardend of two-way function oil cylinder 41 can by the mounting bracket being arranged on vehicle bridge or vehicle frame.

The control method of vehicle steering device according to an embodiment of the invention is specifically described below with reference to Fig. 5, comprises the following steps:

Judge whether assistant steering mechanism works.

If assistant steering mechanism work; be connected two-way function oil cylinder the first and second chambeies and not to one of described first and second chambeies fuel feeding. And

If assistant steering mechanism stopping work, disconnect the first and second chambeies connection and to one of first and second chambeies in fuel feeding so that two-way function oil cylinder by drive turn to transmission rig that wheel is turned to.

The control method of vehicle steering device according to embodiments of the present invention, when assistant steering mechanism 20 lost efficacy for turning to transmission rig 30 promptly to provide power steering, can ensure vehicle safety by two-way function oil cylinder 41. The control method steps of the vehicle steering device of the present invention is simple in addition and operation is reliable.

In the description of this specification sheets, at least one embodiment that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained in the present invention in conjunction with concrete feature, structure, material or feature that this embodiment or example describe or example. In this manual, the schematic representation of above-mentioned term is not necessarily referred to identical embodiment or example. And, the concrete feature of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.

Although it has been shown and described that embodiments of the invention, it will be understood by those skilled in the art that, these embodiments can be carried out multiple change, amendment, replacement and modification when not departing from principle and the objective of the present invention, the scope of the present invention by claim and etc. jljl limit.

Claims (9)

1. a vehicle steering device, it is characterised in that, comprising:
Turn to operating mechanism;
Assistant steering mechanism, described assistant steering mechanism turns to operating mechanism to be connected with described;
Turn to transmission rig, described in turn to transmission rig to be connected with the wheel of vehicle with described assistant steering mechanism respectively; And
Emergent assistant steering mechanism, described emergent assistant steering mechanism comprises the two-way function oil cylinder with the first chamber and the 2nd chamber, described two-way function oil cylinder turns to transmission rig to be connected to turn to transmission rig to turn to transmission rig and itself not drive described in servo-actuated when described assistant steering mechanism works with described, turn to transmission rig action that described wheel is turned to described in driving when described assistant steering mechanism stopping work, described emergent assistant steering mechanism also comprises the distribution valve being connected with described two-way function oil cylinder and the energy storage canister being connected with described distribution valve, first and second chambeies of described two-way function oil cylinder are connected when described assistant steering mechanism works and described distribution valve is in the first location disconnecting between described energy storage canister and described two-way function oil cylinder and being connected, described first and second chambeies disconnect connection when described assistant steering mechanism stopping work and described distribution valve is in the second position that described energy storage canister is connected or the 3rd position that described energy storage canister is connected with described 2nd chamber with described first chamber, with to described first chamber or the 2nd chamber oiling thus make the piston of described two-way function oil cylinder to described 2nd cavity direction motion or to described first cavity direction motion.
2. vehicle steering device according to claim 1, it is characterised in that, described emergent assistant steering mechanism also comprises the magnetic valve of control described distribution valve position switching.
3. vehicle steering device according to claim 1, it is characterised in that, described emergent assistant steering mechanism also comprises:
First diverting valve, described first diverting valve is connected with described energy storage canister;
Hydro-pump, described hydraulic pressure pump outlet is connected with described first diverting valve;
2nd diverting valve, described 2nd diverting valve is connected with the entrance of described hydro-pump; And
Meeting an urgent need and turn to energy storage canister, described meeting an urgent need turns to the outlet of energy storage canister to be connected with described 2nd diverting valve, and entrance is connected with described distribution valve,
Wherein when described first diverting valve and the 2nd diverting valve are switched to the first oil circuit, described hydro-pump turns to energy storage canister to pumps hydraulic oil in described energy storage canister from described meeting an urgent need, when described first diverting valve and the 2nd diverting valve are switched to the 2nd oil circuit, described hydro-pump is to described assistant steering mechanism pumps hydraulic oil.
4. vehicle steering device according to claim 3, it is characterised in that, described emergent assistant steering mechanism also comprises and is located at described 2nd diverting valve and described emergent turns to the strainer between energy storage canister.
5. vehicle steering device according to claim 1, it is characterised in that, described energy storage canister is equipped with helium.
6. vehicle steering device according to any one of claim 1-5, it is characterised in that, described in turn to transmission rig to comprise:
Straight pull bar, one end of described straight pull bar is connected pivotly with described assistant steering mechanism;
First rocking arm, the lower end of described first rocking arm pivotly the other end with described straight pull bar be connected, the upper end of described first rocking arm can pivotable be connected with the vehicle frame of described vehicle;
First turns to straight pull bar, and described first turns to one end of straight pull bar can pivotable to be connected with the lower end of described first rocking arm;
First knuckle arm, described first knuckle arm turns to the other end of straight pull bar pivotable to be connected with described first;
2nd rocking arm, the lower end of described 2nd rocking arm is connected with described two-way function oil cylinder pivotly, and the described upper end of the 2nd rocking arm can pivotable be connected with the vehicle frame of described vehicle;
2nd turns to straight pull bar, and the described 2nd turns to one end of straight pull bar can pivotable to be connected with the lower end of described 2nd rocking arm; And
2nd knuckle arm, described 2nd knuckle arm turns to the other end of straight pull bar pivotable to be connected with the described 2nd.
7. vehicle steering device according to claim 6, it is characterised in that, the piston rod of described two-way function oil cylinder is connected with the lower end of described 2nd rocking arm and the inboardend of described two-way function oil cylinder is arranged on the vehicle frame of described vehicle.
8. vehicle steering device according to claim 7, it is characterised in that, described first rocking arm is connected by connecting rod with described 2nd rocking arm.
9. the control method of a vehicle steering device as according to any one of claim 1-8, it is characterised in that, comprise the following steps:
Judge whether assistant steering mechanism works;
If assistant steering mechanism work; be connected described two-way function oil cylinder the first and second chambeies and not to one of described first and second chambeies fuel feeding; And
If assistant steering mechanism stopping work, disconnect described first and second chambeies connection and to one of described first and second chambeies in fuel feeding so that described two-way function oil cylinder turns to transmission rig to make wheel turn to described in by driving.
CN201210149118.1A 2012-05-14 2012-05-14 The control method of vehicle steering device and this vehicle steering device CN103419836B (en)

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Publication number Priority date Publication date Assignee Title
CN103658250A (en) * 2013-12-18 2014-03-26 郑子姣 Automatic synchronization bending machine
CN104724165B (en) * 2013-12-20 2017-01-25 北汽福田汽车股份有限公司 Vehicle steering device, control method thereof and vehicle

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CN201613932U (en) * 2009-12-25 2010-10-27 鼎盛天工工程机械股份有限公司 Truck hydraulic steering assist emergency power steering pump hydraulics
CN102351005A (en) * 2011-08-08 2012-02-15 徐州重型机械有限公司 Multi-mode steering hydraulic control system and wheeled crane using same

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DE102005010064A1 (en) * 2004-03-08 2005-09-29 Hitachi, Ltd. Assistant steering system
CN101746411A (en) * 2008-12-16 2010-06-23 日产自动车株式会社 Steering control apparatus
CN201613932U (en) * 2009-12-25 2010-10-27 鼎盛天工工程机械股份有限公司 Truck hydraulic steering assist emergency power steering pump hydraulics
CN102351005A (en) * 2011-08-08 2012-02-15 徐州重型机械有限公司 Multi-mode steering hydraulic control system and wheeled crane using same

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