CN109398018A - It is promoted after one kind and turns to central axle loading chassis - Google Patents

It is promoted after one kind and turns to central axle loading chassis Download PDF

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Publication number
CN109398018A
CN109398018A CN201811552216.3A CN201811552216A CN109398018A CN 109398018 A CN109398018 A CN 109398018A CN 201811552216 A CN201811552216 A CN 201811552216A CN 109398018 A CN109398018 A CN 109398018A
Authority
CN
China
Prior art keywords
steering
promoted
air bag
thrust rod
vehicle
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
Application number
CN201811552216.3A
Other languages
Chinese (zh)
Inventor
孙昌旺
冯超
苏云龙
赵志刚
薛彦聪
寇绿洲
梁晓明
杨拓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinotruk Jinan Power Co Ltd
China National Heavy Duty Truck Group Jinan Power Co Ltd
Original Assignee
China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China National Heavy Duty Truck Group Jinan Power Co Ltd filed Critical China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority to CN201811552216.3A priority Critical patent/CN109398018A/en
Publication of CN109398018A publication Critical patent/CN109398018A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/08Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D5/00Power-assisted or power-driven steering
    • B62D5/06Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/065Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by specially adapted means for varying pressurised fluid supply based on need, e.g. on-demand, variable assist
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D5/00Power-assisted or power-driven steering
    • B62D5/06Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/10Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of power unit
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D6/00Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
    • B62D6/001Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits the torque NOT being among the input parameters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10Mounting of suspension elements
    • B60G2204/12Mounting of springs or dampers
    • B60G2204/128Damper mount on vehicle body or chassis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/90System Controller type
    • B60G2800/91Suspension Control
    • B60G2800/912Attitude Control; levelling control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/90System Controller type
    • B60G2800/91Suspension Control
    • B60G2800/914Height Control System

Abstract

The invention discloses promoted to turn to central axle loading chassis after one kind, including front air suspension frame system, front steering axis, drive shaft, rear airsuspension system, rear promotion steering system and ECAS control system, front air suspension frame system includes carrying air bag, air-bag support, damper and counter-jib, and front steering axis is connect by front air suspension frame system with vehicle frame;Drive shaft and the rear steering system that promoted connect composition rear suspension steering system by rear airsuspension system with vehicle frame, airsuspension system is equipped with carrying air bag one, equalizer, preceding upper thrust rod, preceding lower thrust rod, carrying air bag two, promotes air bag, rear upper thrust rod, rear lower thrust rod and promote air-bag support afterwards, and the rear steering system that promoted includes promoting steering shaft, electric boosted cylinder and automatically controlled steering controller part.The present invention can adjust vehicle posture according to demand, adjust vehicle height;Reduce complete-vehicle oil consumption;Reduce turning radius;Course changing control is more accurate, and vehicle driving is safer.

Description

It is promoted after one kind and turns to central axle loading chassis
Technical field
The present invention relates to a kind of central axle loading chassis, belong to heavy motor truck technical field.
Background technique
As the implementation of GB1589-2016, the landing of 9.21 overload remediation new policies and country arrange modularization central axle shipping The propulsion of vehicle pilot, central axle goods train with its big volume, high efficiency, low oil consumption, high reliability, it is preceding get rid of case after can get rid of It hangs, modularization is commutative etc., and advantages receive significant attention in the market in express delivery, cold chain, general goods fast freight etc..It is advised in GB1589-2016 Fixed, central axle goods train overall length is up to 20 meters, if allowed by national standard with completely 20 meters, central axle goods train will be in future The dedicated semitrailer of the low plate of 17.5m will be substituted.In freight market, the dedicated semitrailer of the low plate of 17.5m is longer and high because of length It spends low, the light goods of throwing such as daily necessities is drawn to have a clear superiority.According to LOAD FOR, central axle freight trains maximum autohrozed total mass 49t, it is lighter relative to 6x4 tractor truck chassis, but bearing capacity is identical, has more preferably goods space utilization rate.According to Public security department's statistics, the dedicated semitrailer inventory of the low plate of 17.5m 110,000, mostly main force's vehicle of line haul.If this portion After partite transport power missing, central axle goods train is possible to fill up this blank.Not only meet national legislation, but also there is greatly fortune Amount, welcomes the opportunity of significant development.But central axle goods train has wheelbase length, turning radius relative to tractor truck Big disadvantage, currently, the suspension system for having matching rear axle that can be promoted in the market, but the suspension system can only be in unloaded or underloading Shi Tisheng rear axle, full load, rear axle can not be promoted, and can not solve the problems, such as that turning radius is big.In addition, when handling container, chassis Since the variation chassis height of load can change during changing case, very big inconvenience is brought for handling container, some vehicles Although having matched bridge air suspension system, front axle still uses plate spring structure, can not achieve the whole of chassis height and rises Drop.
Summary of the invention
It can the technical problem to be solved by the present invention is in view of the defects existing in the prior art, provide that a kind of rear axle can promote The central axle loading chassis of active steering.
In order to solve this technical problem, the present invention provides promotions after one kind to turn to central axle loading chassis, including preceding Airsuspension system, front steering axis, drive shaft, rear airsuspension system, rear promotion steering system and ECAS control system, it is described Front air suspension frame system includes that carrying air bag, air-bag support, damper and counter-jib, the front steering axis pass through front air suspension System is connect with vehicle vehicle frame, and when carrying air bag height changes, the relative altitude of front steering axis and vehicle frame changes;The drive Moving axis and the rear steering system that promoted are connect with vehicle vehicle frame by rear airsuspension system, collectively constitute rear suspension steering system, Airsuspension system is equipped with carrying air bag one, equalizer, preceding upper thrust rod, preceding lower thrust rod, carrying air bag two, is promoted after described Air bag, rear upper thrust rod, rear lower thrust rod and promotion air-bag support, it includes promoting steering shaft, electricity that steering system is promoted after described Dynamic servo-cylinder and automatically controlled steering controller part, when carrying air bag height changes, drive shaft and afterwards promotion steering system and vehicle frame Relative altitude change, orientation angle posture when preceding upper thrust rod and preceding lower thrust rod guarantee drive shaft height change is not It changes, orientation angle posture when promoting steering system height change after rear upper thrust rod and the guarantee of rear lower thrust rod is not sent out It is raw to change.
The equalizer of airsuspension system is fixed on the driving shaft after described, and carrying one lower part of air bag is fixed on equalizer On, upper part is fixed on vehicle frame by air-bag support;The preceding lower thrust rod is connected by straight pin with drive shaft lower part, preceding Upper thrust rod is connected by ball pin with drive shaft top;Carrying two top of air bag is fixed on vehicle frame by air-bag support, under Portion, which is fixed on, to be promoted in steering shaft;Air bag upper end is promoted to be fixed in promotion steering shaft, lower end, which is fixed on, to be promoted on air-bag support, Air-bag support is promoted to be fixedly connected with vehicle frame;Lower thrust rod is connected by straight pin with steering shaft lower portion is promoted afterwards, rear lifting force Bar is connected by ball pin with steering shaft upper portion is promoted.
Steering system is promoted after described and uses electric-controlled hydraulic steering structure, including promotes steering shaft, electric boosted cylinder and electricity Control steering controller;The electric boosted cylinder, which is assemblied in, to be promoted in steering shaft.
The promotion steering shaft include knuckle, track rod lever, knuckle arm, track rod, pivot stud and Central siphon, when vehicle is turned right, the rotary angle transmitter in steering column can issue angular signal, automatically controlled steering control to vehicle CAN bus Unit processed reads angular signal, calculates the displacement of electric boosted cylinder and control electric boosted cylinder oil inlet oil inlet, electric boosted cylinder It stretches, pushes knuckle arm to turn left around pivot stud, left side knuckle turns left while passing through track rod lever Right hand steering section is driven to turn left with track rod, the rear steering system that promoted is turned to the left, realizes that vehicle is actively turned right Movement.
Airsuspension system is equipped with load sensing valve after described, and the load on awareness driven axis and promotion steering shaft is promoted and turned To axis when falling, rear airsuspension system makes drive shaft and promotes steering shaft and rise to carry to body tail as a whole to make With, and ECAS control system can be automatically the carrying air bag inflation/deflation in rear airsuspension system, make to drive axle load and It promotes steering axle load and reaches preset ratio;When promoting steering shaft promotion, tire is apart from ground a certain distance, drive shaft list Only vehicle rear load, ECAS control system can be according to load changes in real time to carrying one inflation/deflation of air bag;Carry air bag One has load limit in itself, and when bearing bridge carrying air bag load is more than setting load limit, ECAS control system can will be promoted Steering shaft, which is fallen, plays carrying to body tail as a whole with drive shaft.
The front air suspension frame system and the carrying air bag of rear airsuspension system can be single by central control system ECAS Solely control, realization headstock or the tailstock raise and reduce.
The utility model has the advantages that the present invention matches air suspension, vehicle posture can be adjusted according to demand, adjust vehicle height;Using ECAS electric suspension system realizes the automatic distribution and intelligent control of two or three axis axle loads;Steering shaft is promoted after matching, full load can It is that drive shaft shares axle load as support shaft, reduces driving thrust load;Steering shaft is promoted after when deadhead operation to be promoted, on the one hand Tire wear can be reduced, tire drag on the other hand can be reduced, to reduce complete-vehicle oil consumption;Promoting steering shaft afterwards can be actively Turn to, in a limited space under, turning radius can be reduced;Steering system uses electric-controlled hydraulic steering system, and course changing control is more Accurately, while by electronic control, it can be achieved that security mode control under the operating conditions such as high speed steering, promotion, reversing, makes vehicle driving It is safer.
Detailed description of the invention
Fig. 1 is structural representation front view of the invention;
Fig. 2 is the structural schematic diagram of rear suspension steering system of the present invention;
Fig. 3 is the structural schematic diagram of promotion steering system after the present invention.
In figure: airsuspension system, 41 carrying air bags one, 5 behind 1 front air suspension frame system, 2 front steering axis, 3 drive shafts, 4 Promotion steering system, 51 carrying air bags two, 7 promote upper thrust rod, 11 before air bags, 8 electric boosted cylinders, 9 promotion steering shafts, 10 afterwards Afterwards lower thrust rod behind lower thrust rod, 13 before upper thrust rod, 12,14 equalizers, 15 promoted air-bag supports, 16 track rod levers, 17 track rods, 18 knuckle arms, 19 knuckles, 20 stubs, 21 central siphons.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Fig. 1 show structural representation front view of the invention.
The present invention provides promoted to turn to central axle loading chassis, including front air suspension frame system 1, front steering axis after one kind 2, drive shaft 3, rear airsuspension system 4, rear promotion steering system 5 and ECAS control system.
The front air suspension frame system 1 includes carrying air bag, air-bag support, damper and counter-jib, the front steering axis 2 It is connect by front air suspension frame system 1 with vehicle vehicle frame, when carrying air bag height changes, front steering axis 2 is relatively high with vehicle frame Degree changes.
The drive shaft 3 and it is rear promoted steering system 5 connect by rear airsuspension system 4 with vehicle vehicle frame, common group At rear suspension steering system.
ECAS electronic control unit realizes the control of the pool to front air suspension frame system, rear airsuspension system, solves two The automatic distribution of three axis axle loads and intelligent control, increase driving force, effectively solve to skid, eat the problems such as tire;The preceding air is outstanding The carrying air bag 1 of frame system 1 and rear airsuspension system 4 can be controlled separately by central control system ECAS, realize headstock Or the tailstock raises and reduces.
Fig. 2 show the structural schematic diagram of rear suspension steering system of the present invention.
Airsuspension system 4 is equipped with carrying air bag 1, equalizer 14, preceding upper thrust rod 10 and preceding lower thrust rod after described 12, air bag 2 51 is carried, air bag 7 is promoted, rear upper thrust rod 11, rear lower thrust rod 13, promotes air-bag support 15, the equalizer 14 are fixed in drive shaft 3, and carrying one 41 lower part of air bag is fixed on equalizer 14, and upper part is fixed on vehicle by air-bag support On frame;The preceding lower thrust rod 12 is connected by straight pin with 3 lower part of drive shaft, and preceding upper thrust rod 10 passes through ball pin and drive shaft 3 tops are connected.
2 51 top of carrying air bag is fixed on vehicle frame by air-bag support, and its underpart, which is fixed on, promotes steering shaft 9 On;It promotes 7 upper end of air bag to be fixed in promotion steering shaft 9, lower end, which is fixed on, to be promoted on air-bag support 15, and air-bag support 15 is promoted It is fixedly connected with vehicle frame;Lower thrust rod 14 is connected by straight pin with 9 lower part of steering shaft is promoted afterwards, and rear upper thrust rod 11 passes through ball Pin is connected with 9 top of steering shaft is promoted;When carrying 2 51 height change of air bag, drive shaft 3 and afterwards promotion steering system 5 and vehicle The relative altitude of frame changes, and preceding upper thrust rod 10 and preceding lower thrust rod 12 guarantee orientation angle when 3 height change of drive shaft Degree posture does not change, and determines when promoting 5 height change of steering system after rear upper thrust rod 11 and the guarantee of rear lower thrust rod 13 Position angular pose does not change.
The promotion steering shaft 9 realizes by rear airsuspension system and is individually promoted that rear promoted when steering system axis 9 is promoted mentions It rises air bag 7 to inflate, gasbag pressure increases, and air bag height increases, and promotes air sac belt in the case where promoting air-bag support reaction force acts Steering system 5 is promoted after dynamic to increase;The carrying air bag 6 that steering shaft is promoted after connecting in airsuspension system after simultaneously is deflated, and is mentioned Rising air bag 7 overcomes promotion 9 gravity of steering shaft to make to promote steering shaft promotion.It is that drive shaft shares axis that full load, which can be used as support bridge, Lotus reduces driving thrust load, improves the drive shaft service life, and when deadhead operation, which promotes steering shaft, to be promoted, and on the one hand can reduce wheel Tire abrasion, on the other hand can reduce tire drag, to reduce complete-vehicle oil consumption, improve vehicle economy, bring for user Economic benefit.
Fig. 3 show the structural schematic diagram of promotion steering system after the present invention.
Steering system 5 is promoted after described and uses electric-controlled hydraulic steering structure, including promotes steering shaft 9,8 and of electric boosted cylinder Automatically controlled steering controller.The electric boosted cylinder 8, which is assemblied in, to be promoted in steering shaft 9.It can be achieved to promote 9 active steering of steering shaft, To reduce vehicle turning radius, keep trafficability more excellent, environmental suitability is stronger.
The promotion steering shaft 9 is by knuckle 19, track rod lever 16, knuckle arm 18, track rod 17, steering Stub 20, central siphon 21 form.Knuckle 19 or so respectively has one, is respectively connected by the pivot stud 20 and central siphon 21 of the left and right sides It connects, track rod lever 16 is fixed on knuckle 19, the spindle arm of the left and right sides is connected by track rod 17, passed through Track rod lever 16 and track rod 17 guarantee the corner ratio of two sides knuckle 19.
Steering system is promoted after described and uses electric-controlled hydraulic steering structure, and electric powered steering controller can be read in vehicle CAN Steering wheel angle signal, control hydraulic pump pump oil, electric boosted 8 expanding-contracting action of cylinder is controlled by hydraulic oil.Using automatically controlled liquid Pressure mode keeps course changing control more accurate, avoids tire wear caused by as turning to inaccurate coordination, while passing through electronics control System keeps vehicle driving safer, it can be achieved that security mode control under the operating conditions such as high speed steering, promotion, reversing.
Airsuspension system 4 is furnished with load sensing valve after described.
Embodiments of the present invention:
(1) the integrally-regulated embodiment of chassis height: front steering axis 2 is connected by front air suspension frame system 1 and vehicle vehicle frame It connects, when air bag height changes, front steering axis 2 and the relative altitude of vehicle frame change;Drive shaft 3, the rear steering system 5 that promoted are led to Later airsuspension system 4 is connect with vehicle vehicle frame, when carrying air bag height variation, drive shaft 3, it is rear promoted steering system 5 with The relative altitude of vehicle frame changes, and preceding upper thrust rod 10 and preceding lower thrust rod 13 can guarantee and determine when 3 height change of drive shaft Position angular pose does not change, it is same after upper thrust rod 11 and rear lower thrust rod 14 can guarantee after promote 5 height of steering system Orientation angle posture when variation does not change.
All carrying air bags can be planned as a whole to control by central control system ECAS, by adjusting gas to carrying air bag inflation/deflation The height of capsule.When carrying air bag inflation, air bag height is increased, and loading chassis height integrally increases, when carrying air bag is deflated, air bag Height reduces, and loading chassis height integrally reduces.In addition, can be realized by central control system ECAS to front and back air suspension system The independent control of system, is individually filled and deflated by the carrying air bag in forward and backward air suspension, realizes the raising and drop of headstock or the tailstock It is low.The motor-driven adjusting of chassis height provides convenience condition to handling container, solves and raises asking for container by manpower or machine Topic.
(2) load smart allocation embodiment: the load sensing valve of rear airsuspension system 4 can be with awareness driven axis 3 and promotion Load in steering shaft 9 promotes steering shaft 9 when falling, and rear airsuspension system 4 makes drive shaft 3 and promotes 9 conduct of steering shaft One entirety plays carrying to body tail, and ECAS control system can be automatically holding in rear airsuspension system 4 Carrier gas capsule inflation/deflation makes 3 load of drive shaft and promotion 9 load of steering shaft reach preset ratio, prevents road shocks or vehicle body The problem of load change leads to bearing bridge or promotes steering shaft overload;When promoting the promotion of steering shaft 9, tire is certain apart from ground Distance, the independent vehicle rear load of drive shaft 3, ECAS control system can according to load change in real time to carrying air bag one 41 inflation/deflations;Carrying air bag 1 has load limit in itself, when carrying one 41 load of air bag is more than to set load limit, ECAS Control system, which can will promote steering shaft 9 and fall, plays carrying to body tail as a whole with drive shaft 3.
By load smart allocation function, ECAS control system makes to carry the air bag height that air bag 1 remains certain Degree, can effectively absorb impact of the road surface to the impact and load of tire to vehicle body, to guarantee that vehicle vehicle body remains In the vehicle height downward driving of setting, avoids jolting caused by because of road shocks and cargo is caused to damage.
(3) promote the independent enhanced feature embodiment of steering system afterwards: the rear steering system 5 that promoted can be promoted individually, after mention It rises and promotes the inflation of air bag 7 when steering system 5 is promoted, gasbag pressure increases, and air bag height increases, and is promoting air-bag support reaction The lower promotion air bag of power effect promotes steering system 5 after driving and increases;Steering shaft is promoted after connecting in airsuspension system after simultaneously Carrying air bag 2 51 deflate, promoted air bag 7 overcome promoted 9 gravity of steering shaft make promoted steering shaft promoted.Pass through rear lifting force The guiding of bar 11 and rear lower thrust rod 14 guarantees the back rake angle for promoting steering shaft and positioning appearance under the traction for promoting air bag 7 State.It promotes steering shaft promotion rear tyre and leaves ground, the carrying that do not recur effect.Vehicle is lightly loaded when driving, can will promote steering shaft It raises up, reduces the rolling resistance that vehicle is generated due to promoting steering shaft, to reduce vehicle traveling oil consumption.
(4) promote steering system active steering function embodiment afterwards: promoting steering shaft 9 has turning function, and vehicle is right When turning, the rotary angle transmitter in steering column can issue angular signal to vehicle CAN bus, and automatically controlled turning control cell is read Angular signal in CAN bus calculates the displacement of electric boosted cylinder 8, at this time automatically controlled turning control cell control electric boosted cylinder 8 into Hydraulic fluid port oil inlet, electric boosted cylinder 8 stretch, and knuckle arm 18 is pushed to turn left around pivot stud 20, left side knuckle 19 to Turn left dynamic, right hand steering section 19 is driven by track rod lever 16 and track rod 17 while left side knuckle 19 rotates It turns left, the rear steering system that promoted is turned to the left, realizes vehicle active right-hand bend movement.
Active steering can be realized according to driver actions in full state by promoting steering system afterwards, reduce vehicle turning Radius also effectively prevents and eats tire phenomenon.
The present invention matches air suspension, can adjust vehicle posture according to demand, adjusts vehicle height;It is automatically controlled outstanding using ECAS Frame system realizes the automatic distribution and intelligent control of two or three axis axle loads;Lift bridge after matching, full load can be used as support bridge to drive Dynamic bridge shares axle load, reduces driving load per axle;Lift bridge can be promoted after when deadhead operation, on the one hand can reduce tire wear, separately On the one hand tire drag can be reduced, to reduce complete-vehicle oil consumption;Lift bridge can turn to afterwards, in a limited space under, can contract Tight turn radius;Steering system uses electric-controlled hydraulic steering system, and course changing control is more accurate, while by electronic control, can It realizes security mode control under the operating conditions such as high speed steering, promotion, reversing, keeps vehicle driving safer.
The embodiment above of the present invention, is merely illustrative, be not it is only, it is all within the scope of the present invention or it is equivalent this Change in the range of invention is surrounded by the present invention.

Claims (6)

1. being promoted after one kind and turning to central axle loading chassis, it is characterised in that: including front air suspension frame system (1), front steering Axis (2), rear airsuspension system (4), promotes steering system (5) and ECAS control system, the preceding air at drive shaft (3) afterwards Suspension system (1) includes that carrying air bag, air-bag support, damper and counter-jib, the front steering axis (2) pass through front air suspension System (1) is connect with vehicle vehicle frame, and when carrying air bag height changes, front steering axis (2) and the relative altitude of vehicle frame change; The drive shaft (3) and rear promoted steering system (5) are connect with vehicle vehicle frame by rear airsuspension system (4), are collectively constituted Rear suspension steering system, the rear airsuspension system (4) are equipped with carrying air bag one (41), equalizer (14), preceding upper thrust rod (10) and preceding lower thrust rod (12), carrying air bag two (51), promoted air bag (7), rear upper thrust rod (11), rear lower thrust rod (13), promoted air-bag support (15), it is described after promoted steering system (5) include promoted steering shaft (9), electric boosted cylinder (8) and Automatically controlled steering controller part, when carrying air bag height changes, drive shaft (3) and the rear phase for promoting steering system (5) and vehicle frame To highly changing, preceding upper thrust rod (10) and preceding lower thrust rod (12) guarantee orientation angle when drive shaft (3) height change Degree posture does not change, when promoting 5 height change of steering system after rear upper thrust rod (11) and rear lower thrust rod (13) guarantee Orientation angle posture do not change.
2. being promoted after according to claim 1 and turning to central axle loading chassis, it is characterised in that: air suspension after described The equalizer (14) of system (4) is fixed on drive shaft (3), and carrying air bag (41) lower part is fixed on equalizer (14), thereon Portion is fixed on vehicle frame by air-bag support;The preceding lower thrust rod (12) is connected by straight pin with drive shaft (3) lower part, preceding Upper thrust rod (10) is connected by ball pin with drive shaft (3) top;Carrying air bag two (51) top is fixed on by air-bag support On vehicle frame, its underpart, which is fixed on, to be promoted on steering shaft (9);It promotes air bag (7) upper end to be fixed in promotion steering shaft (9), lower end It is fixed on and is promoted on air-bag support (15), promote air-bag support (15) and be fixedly connected with vehicle frame;Lower thrust rod (14) passes through circle afterwards Pin is connected with steering shaft (9) lower part is promoted, and rear upper thrust rod (11) is connected by ball pin with steering shaft (9) top is promoted.
3. being promoted after according to claim 1 and turning to central axle loading chassis, it is characterised in that: promoted and turned to after described System (5) uses electric-controlled hydraulic steering structure, including promotes steering shaft (9), electric boosted cylinder (8) and automatically controlled steering controller; The electric boosted cylinder (8), which is assemblied in, to be promoted on steering shaft (9).
4. being promoted after according to claim 3 and turning to central axle loading chassis, it is characterised in that: the promotion steering shaft (9) include knuckle (19), track rod lever (16), knuckle arm (18), track rod (17), pivot stud (20) and Central siphon (21), when vehicle is turned right, the rotary angle transmitter in steering column can issue angular signal to vehicle CAN bus, and automatically controlled turn Angular signal is read, the displacement of electric boosted cylinder (8) is calculated and controls electric boosted cylinder (8) oil inlet oil inlet to control unit, Electric boosted cylinder (8) stretches, and pushes knuckle arm (18) to turn left around pivot stud (20), left side knuckle (19) is to the left Rotation, simultaneously by track rod lever (16) and track rod (17) drive right hand steering section (19) turn left, after mention It rises steering system to turn to the left, realizes vehicle active right-hand bend movement.
5. being promoted after according to claim 1 and turning to central axle loading chassis, it is characterised in that: air suspension after described System (4) is equipped with load sensing valve, and the load on awareness driven axis (3) and promotion steering shaft (9) promotes steering shaft (9) and falling When, rear airsuspension system (4) makes drive shaft (3) and promotes steering shaft (9) and rise to carry to body tail as a whole to make With, and ECAS control system can be automatically the carrying air bag inflation/deflation in rear airsuspension system (4), make drive shaft (3) Load and promotion steering shaft (9) load reach preset ratio;When promoting steering shaft (9) and being promoted, tire is certain apart from ground Distance, individually vehicle rear load, ECAS control system can be according to load changes in real time to carrying air bag one for drive shaft (3) (41) inflation/deflation;Carrying air bag one (41) has load limit in itself, when bearing bridge carrying air bag load is more than setting load limit When, ECAS control system, which can will promote steering shaft (9) and fall to rise to carry to body tail as a whole with drive shaft (3), to be made With.
6. being promoted after according to claim 1-5 and turning to central axle loading chassis, it is characterised in that: before described The carrying air bag (6) of airsuspension system (1) and rear airsuspension system (4) can be controlled individually by central control system ECAS System, realization headstock or the tailstock raise and reduce.
CN201811552216.3A 2018-12-19 2018-12-19 It is promoted after one kind and turns to central axle loading chassis Pending CN109398018A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201811552216.3A CN109398018A (en) 2018-12-19 2018-12-19 It is promoted after one kind and turns to central axle loading chassis

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110641346A (en) * 2019-10-21 2020-01-03 苏州万隆华宇物流有限公司 Container transport vehicle
CN113815373A (en) * 2021-08-31 2021-12-21 东风商用车有限公司 Auxiliary control method and device for traction of double-rear-axle vehicle and electronic equipment

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