CN107697151A - Wheel steering system and heavy truck - Google Patents
Wheel steering system and heavy truck Download PDFInfo
- Publication number
- CN107697151A CN107697151A CN201710713656.1A CN201710713656A CN107697151A CN 107697151 A CN107697151 A CN 107697151A CN 201710713656 A CN201710713656 A CN 201710713656A CN 107697151 A CN107697151 A CN 107697151A
- Authority
- CN
- China
- Prior art keywords
- steering
- drag link
- plumbing arm
- pivotally connected
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/20—Links, e.g. track rods
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The present invention relates to a kind of wheel steering system and the heavy truck for being provided with the wheel steering system, the wheel steering system includes：Steering drive axle, the upper end for turning to rotary shaft are connected to steering wheel by steering column；Steering gear, steering gear is fixedly attached to vehicle chassis in the position at automobile front-axle rear, and the lower end of steering drive axle is connected to steering gear by shaft universal-joint；Pitman arm, the upper end of pitman arm and the output axis connection of steering gear under the drive of output shaft relative to steering gear so as to pivoting；Middle Drag link, the rear end of middle Drag link and the lower end of pitman arm are pivotally connected；Middle plumbing arm, position of the middle plumbing arm in front of automobile front-axle are as pivotally connected to vehicle chassis, and the front end of middle Drag link is as pivotally connected to middle plumbing arm；Steering drag link, the front end of steering drag link are pivotally connected to middle plumbing arm, and the rear end of steering drag link is connected to steering front wheel to drive steering front wheel to turn to.
Description
Technical field
The present invention relates to technical field of vehicle, more particularly to a kind of wheel steering system.
Background technology
For the steering arrangement of traditional nose heave card of length, steering column governor motion difficult design, model is adjusted
Enclose limited, sealing difficulty between steering drive axle and body front wall.As shown in figure 1, the first scheme of prior art is by direction
Disk is arranged in the rear portion of automobile front-axle, and steering gear 2 ' is arranged in front axle front portion, middle to be connected by steering column, steering drive axle 1 '
Connect.Steering gear 2 ' exports steering moment and drives steering front wheel 4 ' to turn to by pitman arm and steering drag link 3 '.
Steering wheel is arranged in the rear portion of automobile front-axle by the second scheme (not shown) of prior art, and steering gear is also arranged
It is middle to be connected by steering column, steering drive axle at front axle rear portion.Steering gear export steering moment and by pitman arm and
A piece steering drag link drives wheel steering.
For the first above-mentioned scheme, although can realize that the movement interference amount of steering and suspension system is as small as possible,
But steering drive axle is needed through body front wall part so that steering column adjusting range is small, and shaft universal-joint angle is big,
Difficult design, it is inconvenient that power transmission shaft is fixed, and is sealed between vehicle body difficult.Clutch, braking and the throttle on steering drive axle periphery
Pedal difficult arrangement, man-machine poor performance.
For above-mentioned second scheme, steering and suspension system bounce amount of interference are excessive, it is difficult to pass through optimization design
To reduce amount of interference, it is necessary to which vehicle increases other structures to limit suspension jerk value, therefore will necessarily sacrifice certain vehicle
Can, while also increase cost.
The content of the invention
The purpose of the present invention is one of at least to solve the above problems, and the purpose is achieved through the following technical solutions：
The present invention relates to a kind of wheel steering system, the wheel steering system includes：
Steering drive axle, the upper end for turning to rotary shaft are connected to steering wheel by steering column；
Steering gear, the steering gear are fixedly attached to vehicle chassis, and the steering in the position at automobile front-axle rear
The lower end of power transmission shaft is connected to the steering gear by shaft universal-joint；
The output axis connection of pitman arm, the upper end of the pitman arm and the steering gear is so as in the output
Pivoted under the drive of axle relative to the steering gear；
Middle Drag link, the rear end and the lower end of the pitman arm of the middle Drag link are pivotally connected；
Middle plumbing arm, position of the middle plumbing arm in front of automobile front-axle are as pivotally connected to the vehicle chassis,
The front end of the middle Drag link is as pivotally connected to the middle plumbing arm；
Steering drag link, the front end of the steering drag link are pivotally connected to the middle plumbing arm, the steering drag link
Rear end be connected to steering front wheel to drive the steering front wheel to turn to.
According to a modification of the present invention, the upper end of the middle plumbing arm is as pivotally connected to vehicle chassis, in described
Between the lower end of plumbing arm be pivotally connected to the steering drag link, the front end of the middle Drag link is in the upper end of the middle plumbing arm
Position between lower end is pivotally connected to the middle plumbing arm.
Preferably, medium position pivot of the front end of the middle Drag link between the top and bottom of the middle plumbing arm
It is connected to the middle plumbing arm with turning.
Another according to the present invention improves, before the upper end of the middle plumbing arm is pivotally connected to the middle Drag link
End, the lower end of the middle plumbing arm is pivotally connected to the front end of the steering drag link, and the middle plumbing arm is in its upper end
Position between lower end is as pivotally connected to vehicle chassis.
Preferably, medium position of the middle plumbing arm between its top and bottom is as pivotally connected to vehicle bottom
Disk.
In addition, the invention further relates to a kind of heavy truck, the heavy truck is provided with above-mentioned wheel steering system.
The advantage of the invention is that：Vehicle according to the invention steering system structural is novel, practical, can solve well
Certainly this type wheel steering system design arrangement problem.Arranged using the steering of this structure, can be farthest using flat
Steering part, body front wall and the floor panel structure of nose heave card and clutch, braking and gas pedal arrangement etc..Only need
Again steering gear bracket, middle plumbing arm and its hold-down support, steering linkage etc. are developed, the parts newly increased are few, can be significantly
Reduce new car development difficulty and development cost.By the way that steering gear is arranged in into automobile front-axle rear portion, steering column is passed by turning to
Moving axis is connected with steering gear.By plumbing arm among being turned in the anterior arrangement of automobile front-axle, steering gear output shaft drives pitman arm
Plumbing arm among steering is transferred to by middle Drag link after rotation, middle plumbing arm is then turned to and front-wheel is driven by steering drag link
Turn to.There is no difficult point in this arrangement structure, and can retain and drive the Drag link of front-wheel steer to be arranged in automobile front-axle
Front portion, it can so ensure to turn to from design with the control of the bounce amount of interference of suspension to as far as possible small, so as to meet that design will
Ask, and the present invention can reduce development difficulty and development cost.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 shows the schematic diagram of the wheel steering system of prior art；
Fig. 2 shows the schematic diagram of the wheel steering system according to embodiment of the present invention.
Embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although this public affairs is shown in accompanying drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.Conversely, there is provided these embodiments are to be able to be best understood from the disclosure, and can be by this public affairs
The scope opened completely is communicated to those skilled in the art.
According to the embodiment of the present invention, a kind of wheel steering system is proposed, as shown in Fig. 2 the wheel steering system bag
Include：Steering drive axle 1, steering gear 2, pitman arm 6, middle Drag link 7, middle plumbing arm 8 and steering drag link 3.Wherein, turn to
The upper end of rotary shaft is connected to steering wheel 9 by steering column 5 so that when needing to carry out steering operation to vehicle, Si Jitong
Cross operation steering wheel 9 and steering moment is transferred to steering drive axle 1.The lower end of steering drive axle 1 is connected by shaft universal-joint
Steering gear 2 is connected to, as shown in Fig. 2 steering gear 2 is fixedly attached to vehicle chassis in the position at automobile front-axle rear, and is turned to
The upper end of plumbing arm 6 is as pivotally connected to steering gear 2.Steering gear 2 will be transmitted the torque come in by steering drive axle 1 and be put
It is big and pitman arm 6 is transferred to by output shaft, so that pitman arm 6 is pivot relative to the pivot of steering gear 2 using its upper end
Turn, and then pivoted relative to overall vehicle chassis.Middle Drag link 7 is arranged to the longitudinal direction extension approximately along vehicle, and
Its rear and front end is located at the front and back of automobile front-axle respectively.The rear end of middle Drag link 7 is pivotally connected to pitman arm 6
Lower end, therefore its lower end drives middle Drag link 7 in the case where pitman arm 6 is pivoted or swung as pivot using its upper end
Substantially direction moves forward and backward longitudinally along the vehicle.
In addition, the opening position in front of automobile front-axle in vehicle chassis is disposed with middle plumbing arm 8.According to the present invention's
Preferred embodiment, the upper end of middle plumbing arm 8 are as pivotally connected to vehicle chassis, and lower end is as pivotally connected to turn to directly
The front end of pull bar 3 so that middle position of the middle Drag link 7 between the top and bottom of middle plumbing arm 8 is pivotally connected to
Middle plumbing arm 8.Therefore, in the case that in middle Drag link 7, substantially longitudinally direction is moved under the drive of pitman arm 6, in
Between Drag link 7 substantially longitudinally can push or pull on middle plumbing arm 8 in direction so that middle plumbing arm 8 is using its upper end as pivot
Pivoted relative to vehicle chassis, and then cause middle plumbing arm 8 to drive steering drag link 3 to move by its lower end.It is straight due to turning to
The rear end of pull bar 3 is connected to steering front wheel 4, such as is connected to steering front wheel 4 by knuckle arm, therefore steering drag link 3
Movement can drive steering front wheel to rotate so as to realize Vehicular turn.
In addition, according to the present invention a kind of alternative embodiment, middle plumbing arm can therebetween position with pivotable
Mode be connected to vehicle chassis so that the upper end of middle plumbing arm is pivotally connected to the front end of middle Drag link, and in
Between the lower end of plumbing arm be pivotally connected to the front end of steering drag link.Therefore, it is big under drive of the middle Drag link in pitman arm
Cause in the case of moving along the longitudinal direction, middle Drag link substantially longitudinally can push or pull on the upper of middle plumbing arm in direction
End, so that middle plumbing arm is pivoted with its middle part for pivot relative to vehicle chassis, and then middle plumbing arm is caused to pass through its lower end
Steering drag link is driven substantially to move.The movement of steering drag link can drive steering front wheel to rotate so as to realize Vehicular turn.
The structure that this arrangement can be directed to different vehicle chassis is adapted to different steering gear installation sites.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Enclose and be defined.
Claims (6)
1. a kind of wheel steering system, it is characterised in that the wheel steering system includes：
Steering drive axle, the upper end for turning to rotary shaft are connected to steering wheel by steering column；
Steering gear, the steering gear are fixedly attached to vehicle chassis in the position at automobile front-axle rear, and described turn to is driven
The lower end of axle is connected to the steering gear by shaft universal-joint；
The output axis connection of pitman arm, the upper end of the pitman arm and the steering gear is so as in the output shaft
Pivoted under drive relative to the steering gear；
Middle Drag link, the rear end and the lower end of the pitman arm of the middle Drag link are pivotally connected；
Middle plumbing arm, position of the middle plumbing arm in front of automobile front-axle is as pivotally connected to the vehicle chassis, described
The front end of middle Drag link is as pivotally connected to the middle plumbing arm；
Steering drag link, the front end of the steering drag link are pivotally connected to the middle plumbing arm, after the steering drag link
End is connected to steering front wheel to drive the steering front wheel to turn to.
2. wheel steering system according to claim 1, it is characterised in that the upper end of the middle plumbing arm pivotly connects
Vehicle chassis is connected to, the lower end of the middle plumbing arm is pivotally connected to the steering drag link, the front end of the middle Drag link
Position between the top and bottom of the middle plumbing arm is pivotally connected to the middle plumbing arm.
3. wheel steering system according to claim 2, it is characterised in that the front end of the middle Drag link is in described
Between plumbing arm top and bottom between medium position be pivotally connected to the middle plumbing arm.
4. wheel steering system according to claim 1, it is characterised in that the upper end of the middle plumbing arm is pivotally connected to
The front end of the middle Drag link, the lower end of the middle plumbing arm are pivotally connected to the front end of the steering drag link, and institute
State position of the middle plumbing arm between its top and bottom and be as pivotally connected to vehicle chassis.
5. wheel steering system according to claim 4, it is characterised in that the middle plumbing arm its top and bottom it
Between medium position be as pivotally connected to vehicle chassis.
6. a kind of heavy truck, it is characterised in that the heavy truck is provided with according to any one of claim 1 to 5 institute
The wheel steering system stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710713656.1A CN107697151A (en) | 2017-08-18 | 2017-08-18 | Wheel steering system and heavy truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710713656.1A CN107697151A (en) | 2017-08-18 | 2017-08-18 | Wheel steering system and heavy truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107697151A true CN107697151A (en) | 2018-02-16 |
Family
ID=61170161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710713656.1A Pending CN107697151A (en) | 2017-08-18 | 2017-08-18 | Wheel steering system and heavy truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107697151A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59100057A (en) * | 1982-11-29 | 1984-06-09 | Kubota Ltd | Steering device for tractor |
| CN1789058A (en) * | 2004-12-14 | 2006-06-21 | 王凯 | Automobile steering system |
| CN202243645U (en) * | 2011-09-19 | 2012-05-30 | 安徽柳工起重机有限公司 | Car crane double-front-axle steering mechanism |
| CN202491837U (en) * | 2012-03-22 | 2012-10-17 | 桂林福达机器有限公司 | Electric power-assisted steering device for steering wheel tractor |
| CN202518338U (en) * | 2012-04-11 | 2012-11-07 | 东风特汽(十堰)客车有限公司 | Transmission mechanism for school bus |
| CN207257756U (en) * | 2017-08-22 | 2018-04-20 | 桂林大宇客车有限公司 | Double steering wheel steering operating mechanism |
-
2017
- 2017-08-18 CN CN201710713656.1A patent/CN107697151A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59100057A (en) * | 1982-11-29 | 1984-06-09 | Kubota Ltd | Steering device for tractor |
| CN1789058A (en) * | 2004-12-14 | 2006-06-21 | 王凯 | Automobile steering system |
| CN202243645U (en) * | 2011-09-19 | 2012-05-30 | 安徽柳工起重机有限公司 | Car crane double-front-axle steering mechanism |
| CN202491837U (en) * | 2012-03-22 | 2012-10-17 | 桂林福达机器有限公司 | Electric power-assisted steering device for steering wheel tractor |
| CN202518338U (en) * | 2012-04-11 | 2012-11-07 | 东风特汽(十堰)客车有限公司 | Transmission mechanism for school bus |
| CN207257756U (en) * | 2017-08-22 | 2018-04-20 | 桂林大宇客车有限公司 | Double steering wheel steering operating mechanism |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180216 |