A kind of electric bus of three bridge list tire carryings
Technical field
The present invention relates to bus, specifically a kind of electric bus of three bridge list tire carryings.
Background technology
In recent years, energy-conserving and environment-protective are more and more subject to people's attention, and the electronic class new forms of energy buses such as pure battery electric bus, hybrid-power bus, extended-range bus, double source trackless electric bus, trackless electric bus develop rapidly because of the advantage with energy-saving and emission-reduction.Existing electronic class new forms of energy bus generally adopts the mode of doube bridge, propons is as steeraxle, back axle is as drive axle, and single bridge load is large, in order to meet load bearing requirements, need to use larger tire, and the restriction of driving system structure while being subject to existing electronic class new forms of energy bus back axle to adopt centralized driving mode, in the time that railway carriage tank top plate adopts low floor, the corresponding railway carriage tank top plate of drive axle and tire position is higher, the seat position that is arranged on these positions is higher, is not easy to occupant and stands up and take a seat.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of electric bus of four bridge carryings is provided, it can reduce the railway carriage tank top plate boss that causes because of drive axle and tire and the diff-H of load carrying floor, in the time that seat is installed at railway carriage internal projection position, be also convenient to occupant and take a seat and stand up.
The present invention addresses the above problem and is achieved through the following technical solutions: a kind of electric bus of three bridge list tire carryings, comprise chassis and be fixed on steering hardware and the driver train on chassis, described steering hardware is positioned at driver train front side, and steering hardware comprises that steeraxle and two are separately positioned on the steered wheel of steeraxle both sides; Described driver train comprises drive axle, power drive system and drives wheel, described drive axle comprises the first drive axle and the second drive axle, described the first drive axle and the equal horizontally set of the second drive axle and parallel to each other, the first drive axle and the second drive axle left and right sides are provided with the power drive system that drives wheel and make to drive vehicle wheel rotation, and described power drive system is fixed on drive axle.Bus of the present invention can be the electronic class new forms of energy buses such as pure battery electric bus, hybrid-power bus, extended-range bus, double source trackless electric bus, trackless electric bus.When the present invention applies, each power drive system is a driving wheel of corresponding driving respectively, drive system is coordinated by controller in motion process, and the differential requirement when ensureing that the rotating speed of each driving wheel is identical and turning to, disperses thereby realize doube bridge the mode driving.
Further, described steering hardware also comprises longitudinal tie and steering booster, on described steeraxle, is connected with pitman arm, and described longitudinal tie two ends connect respectively steering booster and pitman arm.So, when the present invention applies, steering booster reaches power by vertical position bar the pitman arm connecting on steeraxle, and under the induced effect of pitman arm, steered wheel is realized and being turned to.
Further, described pitman arm comprises the cross connecting plate of horizontally set and the longitudinal connecting panel longitudinally arranging, described longitudinal connecting panel front end is connected with cross connecting plate, described pitman arm is by being arranged on steeraxle through cross connecting plate and the locating dowel pin of longitudinal connecting panel connecting portion, pitman arm is flexibly connected with steeraxle by its longitudinal connecting panel rear end, and described longitudinal tie the connects longitudinal connecting panel end relatively other end by being connected to cross connecting plate is connected with pitman arm.When pitman arm of the present invention is movable, it can rotate around locating dowel pin.
In order to ensure the structural strength of pitman arm, further, the cross connecting plate of described pitman arm and longitudinally connecting panel become one.
Further, described power drive system comprises motor, wheel carrier, top link and lower swing arm, described motor is fixed on wheel carrier, described power drive system makes to drive vehicle wheel rotation by motor, described top link and lower swing arm are connected to the upper and lower two ends of wheel carrier, and power drive system is connected on drive axle by top link and lower swing arm.So, when the present invention applies, rotated by power wheel, and top link and lower swing arm in the time that the present invention vibrates for power drive system is led.
Further, described power drive system also comprises the air bag being arranged on top link.So, top link of the present invention can act on air bag while swing, and air bag is flexible can reach the object of the present invention being carried out to vibration damping.
Further, described power drive system also comprises the shock absorber that two ends are connected with lower swing arm and drive axle respectively.The present invention's shock absorber in the time that lower swing arm swings is flexible, under the telescopic action of shock absorber, can further promote effectiveness in vibration suppression of the present invention.
Further, described top link includes with lower swing arm the flexible connecting strip that two one end are connected with wheel carrier, the other end of the relative fifth wheel frame end of flexible connecting strip is connected with bulb, and described top link is all fixed on drive axle and is connected with drive axle by bulb with lower swing arm.When top link of the present invention and lower swing arm are connected on drive axle all by two point locations, the amplitude of fluctuation of power drive system can reduce the present invention and apply time; Power drive system of the present invention can carry out small size horizontal hunting under the effect of bulb, can avoid rigid connection to have the problem of structural failure.
In sum, the present invention has following beneficial effect: (1) steering hardware of the present invention comprises steeraxle, driver train comprises the first drive axle and the second drive axle, adopt the mode of three bridge carryings, can reduce the load of every root bridge, so, less tire just can bear required load, can reduce to drive the volume of wheel and steered wheel, so, when applying, the present invention can reduce tire correspondence position railway carriage tank top plate height, and then can reduce the height of seat of tire correspondence position, being convenient to occupant takes a seat and stands up, especially old, a little less than, sick, the upper and lower seat of residual personage is more convenient.
(2) the present invention adopts two root bridges as drive axle, and a root bridge as steeraxle, has ensured enough power output and taken advantage of in a situation of performance the best, having realized the minimumization requirement of cost.
(3) when the present invention applies, adopt doube bridge to disperse electrically operated mode, can reduce the power requirement of power drive system and the moment of torsion that power drive system bears, and then can reduce the volume and weight of power drive system, so, when the present invention applies, the height of drive axle position railway carriage tank top plate can reduce, and then can reduce the impact on railway carriage tank top plate height when the present invention is applied, is convenient to seat arrangements in car.
(4) the present invention adopts the mode that doube bridge drives and three bridges carry, the volume of steered wheel, driving wheel and power drive system all can reduce, so, the present invention is in the time that railway carriage tank top plate adopts low floor, boss and load carrying floor diff-H are also less, install after seat at boss, occupant take a seat stand up convenient.
Brief description of the drawings
Fig. 1 is that in specific embodiment of the present invention, steering hardware and driver train are connected to the structural representation on chassis;
Fig. 2 is the structural representation of steering hardware in Fig. 1;
Fig. 3 is the structural representation of driver train in Fig. 1;
Fig. 4 is the structural representation of power drive system in Fig. 3.
In accompanying drawing, the corresponding name of Reference numeral is called: 1, chassis, 2, steering hardware, 201, steeraxle, 202, steered wheel, 203, longitudinal tie, 204, pitman arm, 205, steering booster, 3, driver train, 301, the first drive axle, 302, the second drive axle, 303, wheel, 304, top link, 305, shock absorber, 306, lower swing arm, 307, motor, 308, wheel carrier, 309, air bag.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is done to detailed description further, but embodiments of the present invention are not limited to this.
Embodiment 1:
As shown in Figure 1, a kind of electric bus of three bridge list tire carryings, comprise chassis 1, steering hardware 2 and driver train 3, wherein, steering hardware 2 and driver train 3 are all fixed on chassis 1, steering hardware 2 is positioned at driver train 3 front sides, and the steering hardware 2 of the present embodiment comprises that steeraxle 201 and two are separately positioned on the steered wheel 202 of steeraxle 201 both sides.The driver train 3 of the present embodiment comprises drive axle, power drive system and driving wheel 303, wherein, drive axle comprises the first drive axle 301 and the second drive axle 302, the first drive axle 301 and the equal horizontally set and parallel to each other of the second drive axle 302, the first drive axle 301 is identical with the second drive axle 302 level heights and have in the vertical a determining deviation, the first drive axle 301 and second drive axle 302 both left and right sides are provided with and drive wheel 303 and make the power drive system that drives wheel 303 to rotate, drive the power drive system of 301 liang of side drive wheels 303 of the first drive axle to be connected on the first drive axle 301, drive the power drive system of 302 liang of side drive wheels 303 of the second drive axle to be connected on the second drive axle 302.
When the present embodiment application, adopt doube bridge to turn to doube bridge and disperse the mode driving, each driving wheel 303 is all to there being a power drive system to drive it.
Embodiment 2:
As shown in Figure 2, the present embodiment has been made following further restriction on the basis of embodiment 1: the steering hardware 2 of the present embodiment also comprises longitudinal tie 203 and steering booster 205, wherein, on steeraxle 201, be connected with pitman arm 204, longitudinal tie 203 two ends connect respectively steering booster 205 and pitman arm 204.
When the present embodiment application, drive longitudinal tie 203 to move by steering booster 205, power is reached the pitman arm 204 on steeraxle 201 by longitudinal tie 203, under the induced effect of pitman arm 204, realizes turning to of steeraxle 201.
Embodiment 3:
The present embodiment has been made following further restriction on the basis of embodiment 2: the pitman arm 204 of the present embodiment comprises the cross connecting plate of horizontally set and the longitudinal connecting panel longitudinally arranging, wherein, longitudinally connecting panel front end is connected with cross connecting plate, and longitudinally connecting panel is connected rear entirety formation " L " shape with cross connecting plate.For the structural strength of pitman arm 204 is provided, in the present embodiment, the cross connecting plate of pitman arm 204 and longitudinal connecting panel become one.Pitman arm 204 in the present embodiment on steeraxle 201 is by being arranged on steeraxle 201 through cross connecting plate and the locating dowel pin of longitudinal connecting panel connecting portion, on steeraxle 201, pitman arm 204 is flexibly connected with steeraxle 201 by its longitudinal connecting panel rear end, and longitudinal tie 203 rear ends of the present embodiment the connect longitudinal connecting panel end relatively other end by being connected to cross connecting plate is connected with pitman arm 204.
Embodiment 4:
As shown in Figures 3 and 4, on the basis of the present embodiment any one embodiment in embodiment 1~embodiment 3, make following further restriction: the power drive system of the present embodiment comprises motor 307, wheel carrier 308, top link 304 and lower swing arm 306, wherein, motor 307 is fixed on wheel carrier 308, and power drive system makes to drive wheel 303 to rotate by motor 307.The top link 304 of the present embodiment and lower swing arm 306 are connected to wheel carrier Shang Xia 308 two ends, and power drive system is connected on drive axle by top link 304 and lower swing arm 306.
When the present embodiment application, each motor 307 drives single driving wheel 303, its moment of torsion bearing reduces, the power requirement of motor 307 also reduces, so, can reduce the power of motor 307 and dwindle the volume of motor 307, save the cost of motor 307, and can reach the object of dwindling power drive system volume.The present embodiment in the specific implementation motor 307 of four power drive systems is coordinated by electric machine controller in motion process, ensure the deceleration requirement that the rotating speed of each driving wheel 303 is identical and turn to, when the present embodiment application, be convenient to adopt electric machine controller to control, automatically controlled cost is low.
Embodiment 5:
The present embodiment has been made following further restriction on the basis of embodiment 4: the power drive system of the present embodiment also comprises air bag 309, and wherein, air bag 309 is arranged on top link 304.When the present embodiment vibration, air bag 309 is flexible, and then can reach the object of vibration damping.
Embodiment 6:
The present embodiment has been made following further restriction on the basis of embodiment 4 or embodiment 5: the power drive system of the present embodiment also comprises shock absorber 305, shock absorber 305 one end are connected on lower swing arm 306, its other end is connected on drive axle, and the drive axle that each shock absorber 305 connects is same drive axle with the drive axle that the power drive system under it is connected.When the present embodiment application, if there is vibration, shock absorber 305 can be flexible, and then reach the object of vibration damping.
Embodiment 7:
On the basis of the present embodiment any one embodiment in embodiment 4~embodiment 6, make following further restriction: the top link 304 of the present embodiment includes with lower swing arm 306 flexible connecting strip that two one end are connected with wheel carrier 308, wherein, flexibly connect strip adoption plastics, the other end that flexible connecting strip connects wheel carrier 308 ends is relatively connected with bulb, and top link 304 is all fixed on drive axle and is connected with drive axle by bulb with lower swing arm 306.The present embodiment is in the time that power drive system carries out horizontal hunting, and under the effect of bulb, the connection structure of power drive system and drive axle is not fragile.
As mentioned above, can realize preferably the present invention.