A kind of rubber tire low-floor bogie
The present invention relates to a kind of novel urban public transport vehicle bogie truck, be specially a kind of rubber tire low-floor bogie.
Traditional guideway vehicle (as modern tram) have vehicle marshalling field freight volume large, adopt low, the emission-free discharge of electric traction noise, entrance is low is convenient to advantages such as getting on or off the bus, it is a kind of urban public transport vehicle extensively favored, but its bogie truck adopted all adopts steel wheel, and traveling is needed to be laid on rail specially.And steel rail laying can bring higher cost, destroy the adverse effects such as road surface, therefore tramway train in the region of the new planning such as suburb or high and new technology industrial development zone, can only not be suitable for ground communications in urban district, tramway train is difficult to a large amount of universal.Now existing a lot of low-floor bogie, as Chinese patent CN101979266 " 100% low-floor light rail vehicle mechanism of independent wheel power truck ", its (1) framework: truck side sill is outwardly cantilevered, its bracketed part protruded is as motor hanger, secondary spring mount pad is located on motor hanger, truck transom adopts the bottom of quadra anatomical connectivity in the middle part of two truck side sills, and truck end sill adopts U-shaped structure, and coexist with truck transom bottom it plane; (2) axle bridge mechanism: two minor axises are supported by bearing unit, connect an elastic wheel respectively separately, bearing unit is fixed on minor axis by bearing gland, minor axis is provided with dust ring between cambered axle and bearing unit, elastic wheel is provided with bonnet and also and between dust ring forms labyrinth packing, between elastic wheel and bearing gland, be provided with lamination seal ring; (3) axle construction: axletree is made up of two minor axises, bearing unit comprises two tapered roller bearings varied in size, and one of them bearing assemble is in wheel inner holes; (4) two wheels of bogie truck the same side are fixed on motor driving shaft, and motor connects with two gears case.This vehicle volume with this structure bogie truck is comparatively large, and vehicle body is longer, and prepared cars line performance is not good, is applied to the urban district passage rate that population is more, vehicle is more and can not be guaranteed.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of rubber tire low-floor bogie, it, by the position and the mode that adopt rubber tire and improve motor gear case apparatus, makes guideway vehicle both in rail-free road traveling, can possess again high streamline performance.
The concrete technological means that the present invention takes is:
A kind of rubber tire low-floor bogie, comprise independent wheelset, framework, motor gearbox driving device, secondary suspension device, draw gear, described framework is made up of two curb girders, two crossbeams and two end carriages; Described secondary suspension device is positioned at four angles of bogie truck; Described draw gear is installed on the midway location outside truck transom; Described independent wheelset comprises rubber wheel, brake equipment, axle bridge and driving device, and described brake equipment is positioned at the inner side of rubber wheel; Described axle bridge comprises the main body of the middle recessed structure that takes the shape of the letter U and main body two ends and is positioned at connecting portion on same axis; Described connecting portion is hollow structure; Described driving device comprises bearing axle box, break-in drive gearbox and axle drive shaft, described axle drive shaft is through the connecting portion of hollow structure, one end that axle drive shaft is positioned at axle bridge main body connects break-in drive gearbox, break-in drive gearbox drives drive shaft turns, the other end of axle drive shaft is fixedly connected with bearing axle box, and bearing axle box rotates under the transmission of axle drive shaft; The inside face of described bearing axle box is fixed on the outside face of hollow structure connecting portion, and the outside face of bearing axle box is provided with rubber wheel; Described rubber wheel runs under the drive of bearing axle box;
Described motor gearbox driving device is installed on the middle part of truck side sill, comprises motor and gear case, and motor and gear box designs are integral type, and motor is lateral arrangement, and gear case is longitudinal layout and gear case exports to two ends simultaneously; Motor gearbox driving device connects two the break-in drive gearboxs being positioned at motor gearbox driving device homonymy respectively by two universal-joints.
Wherein, described secondary suspension device comprises four two is spring, two lateral dampers, four vertical dampers, four transverse elasticity backstops; Described four two is spring and four corresponding four angles being distributed in bogie truck of vertical damper, and vertical bumper is positioned at the outside that two are spring; Described two lateral dampers and four transverse elasticity backstop are corresponding respectively at right angles installs with vertical bumper, and two lateral dampers are positioned at truck frame diagonal position.
Wherein, described framework is welding or cast-in-block framed structure.
Wherein, described draw gear selects traction rubber metal pad.
Wherein, described rubber tire is solid rubber tyre.
Wherein, described two to be spring be helical steel springs or air bellow or rubber metal pad spring or hourglass rubber spring.
Beneficial effect of the present invention:
(1) adopt U-shaped axle bridge, realize reducing height of the carbody, improve the safety performance of guideway vehicle; The connecting portion at axle bridge two ends is hollow structure simultaneously, and after axle drive shaft runs through the connecting portion of hollow structure, two ends connect break-in drive gearbox and bearing axle box respectively, and compared to existing technology, driving device is installed on the outside of tire, saves the space of independent wheelset.
(2) on each wheel all with break-in drive gearbox, separate between each break-in drive gearbox, centre is not communicated with, about it, each comfortable axle drive shaft of two wheels drives lower independent rotation, than the advantage of the structure of existing automobile front-rear axle be, control wheel can be carried out by the speed discrepancy about ACTIVE CONTROL between two wheels to by straight line or curve driving, be convenient to vehicle and realize automatic tracking control.
(3) this kind of bogie truck is for the low floor vehicle with alignment control system, alignment control system is by controlling two motor gear case apparatus of bogie truck, that two motor gearboxes possess different rotating speeds, and then vehicle can automatically be advanced along the circuit preset, driver does not need to participate in normal steering operation, is only responsible for accelerating and slowing down; Select rubber tire then to make guideway vehicle can not lay track and just can run on road surface, urban district.
(4) of the present invention two is spring distribution bogie truck four angles, and comparing existing bogie truck two is that spring is arranged in the middle part of bogie truck, and this scheme can supported cart body weight equably, keeps car body balance better.
(5) adopt the vehicle of rubber tyre low-floor bogie can compatible existing city motor bus road surface, can have as traditional guideway vehicle again that freight volume is large, the feature of low-carbon environment-friendly, it is a kind of ideal city ground public transport vehicle, progressively can replace the city ground public transport instrument that city motor bus becomes main, market outlook are very good.
Accompanying drawing explanation
The schematic three dimensional views of accompanying drawing 1 rubber tire low floor vehicle;
The front elevation of accompanying drawing 2 rubber tire low floor vehicle;
The axis side view of the independent wheelset of accompanying drawing 3 rubber tire low floor vehicle;
The cutaway view of the independent wheelset of accompanying drawing 4 rubber tire low floor vehicle;
In figure, independent wheelset 1, framework 2, motor gearbox driving device 3, axle Biodge device 4, two are spring 5, vertical damper 7, transverse elasticity backstop 8, lateral damper 9, traction rubber metal pad 10, rubber wheel 1-1, axle bridge 1-2, bearing axle box 1-3, break-in drive gearbox 1-4, axle drive shaft 1-5, car body 1-6.
Detailed description of the invention
In order to better explain technical scheme of the present invention, be described in detail below in conjunction with accompanying drawing 1-4 and embodiment.
A kind of rubber tire low-floor bogie as shown in accompanying drawing 1-2, comprise independent wheelset 1, framework 2, two motor gearbox drivings device 3, secondary suspension device, draw geares, described framework 2 is made up of two curb girders, two crossbeams and two end carriages; Described motor gearbox driving device 3 is installed on the middle part of framework 2 curb girder, comprise motor and gear case, motor and gear box designs are integral type, and motor is lateral arrangement, gear case is longitudinally arrange to export to two ends simultaneously, can shorten the wheelbase of bogie truck like this, make bogie truck weight lighter, curving performance is more excellent; A motor gearbox driving device 3 connects two the break-in drive gearbox 1-4 being positioned at motor gearbox driving device 3 homonymy respectively by two universal-joints 4.Described independent wheelset 1(is as shown in accompanying drawing 3-4) comprise rubber wheel 1-1, brake equipment, axle bridge 1-2, driving device, described axle bridge 1-2 comprises the connecting portion that the main body of the middle recessed structure that takes the shape of the letter U and main body two ends are positioned at the hollow structure on same axis; Described driving device comprises bearing axle box 1-3, break-in drive gearbox 1-4 and axle drive shaft 1-5; Described axle drive shaft 1-5 is through the connecting portion of hollow structure, and one end that axle drive shaft 1-5 is positioned at axle bridge 1-2 main body connects break-in drive gearbox 1-4, and the other end of axle drive shaft 1-5 is fixedly connected with bearing axle box 1-3; The inside face of described bearing axle box 1-3 is fixed on the outside face of hollow structure connecting portion, and the outside face of bearing axle box 1-3 is provided with rubber wheel 1-1.
During vehicle operating, the zigzag tread patterns power of drive system is delivered on break-in drive gearbox 1-4, break-in drive gearbox 1-4 inside adopts spiral bevel gear, be laterally by propulsive effort direction transformation, be delivered on bearing axle box 1-3 through axle drive shaft 1-5 again, bearing axle box 1-3 drives rubber wheel 1-1 to run.
Wherein, the break-in drive gearbox 1-4 zigzag tread patterns torque conversion transversely driving torque that can will pass over from driver for vehicle; About independent wheelset, two break-in drive gearbox 1-4 are separate in addition, centre is not communicated with, than the advantage of the structure of existing automobile front-rear axle be, the floor in car body can be reduced, coordinate with foregoing axle bridge 1-2, make car body floor face to reduce below medium plane of wheel, make vehicle floor face lower than prior art; Each rubber wheel 1 is all furnished with a break-in drive gearbox 1-4, separate, the advantage of this structure is that same wheel can independently control the rotating speed of upper two the rubber wheel 1-1 in left and right, control wheel can be carried out by the speed discrepancy about ACTIVE CONTROL between two rubber wheel 1-1 to by straight line or curve driving, be convenient to vehicle and realize automatic tracking control.
In actual operation process, speed discrepancy by controlling two motors in left and right is controlled the speed discrepancy of the rubber tire of the bogie truck left and right sides by the control system on train, make bogie truck along the straight line preset or curve motion, the automatic tracking that can realize vehicle travels.Described framework 2 is lead frame structure.Described draw gear is installed on the midway location of framework 2 crossbeam.As a further improvement on the present invention, described draw gear selects parallel bar stretching and drawing system.Described rubber tire is hollow rubber tire.
It is spring 5, two lateral dampers 9, four vertical dampers 7, four transverse elasticity backstops 8 that described secondary suspension device comprises four two; Described four two four angles being spring 5 and being distributed in bogie truck; Four angles that described four vertical dampers 7 are distributed in bogie truck are positioned at the side that four two are spring 5; Four angles that described two lateral dampers 9 and four transverse elasticity backstop 8 correspondences are distributed in bogie truck are positioned at the opposite side that four two are spring 5, and with vertical damper 7 at right angles relation; And two lateral dampers 9 are positioned at truck frame diagonal position.Here two is that spring 5 distributes bogie truck four angles, and comparing existing bogie truck two is that spring 5 is arranged in the middle part of bogie truck, and this scheme can supported cart body weight equably, keeps car body balance better.Described framework 2 is welding or cast-in-block framed structure.Traction rubber metal pad 10 is installed on the midway location of framework 2 cross rail outer.In order to improve holding capacity and the crocking resistance of vehicle tyre, described rubber tire is solid rubber tyre.Described two is spring 5 is helical steel springs or air bellow or rubber metal pad spring or hourglass rubber spring.
Should be understood that, above-mentioned detailed description of the invention of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.