CN209224930U - A kind of vehicle drive system - Google Patents

Abstract

The utility model discloses a kind of vehicle drive system, including main drive motor, secondary driving motor and transmission system for the power of the main drive motor and secondary driving motor output to be transferred to wheel shaft；The transmission system includes transmission shaft, coupling differential mechanism, multi-gear transmission transmission mechanism and driving differential mechanism；Power is transferred to the right axle shaft gear of coupling differential mechanism by multi-gear transmission transmission mechanism by the main drive motor, and power is transferred to the left half axle gear of coupling differential mechanism by transmission shaft by the pair driving motor；The differential gear of the coupling differential mechanism is meshed with the differential gear of driving differential mechanism, and is distributed power to the left half axle of vehicle and right axle shaft by driving differential mechanism；The drive system of the utility model supplies power simultaneously by two motors, can preferably meet the demand of the vehicle power of user.

Description

A kind of vehicle drive system

Technical field

The utility model relates to vehicle chassis members field, in particular to a kind of vehicle drive system.

Background technique

Motor vehicle is divided into electric vehicle (two-wheeled, three-wheel and electric car) and using engine as the vehicle of power, and electric vehicle is It is travelled by power drive electric vehicle of onboard power battery, since electric vehicle has the characteristics that energy-saving and environmental protection are light, and Cost of use is lower, is more and more taken seriously.But power and output torque due to motor etc. compares engine Poor, the existing electrical vehicular power by single motor driving is poor, it is difficult to meet the use demand of user.

Therefore, it is necessary to a kind of vehicle drive system, which supplies power simultaneously by two motors, can be preferable The vehicle power for meeting user demand.

Utility model content

The vehicle drive system of the utility model, including main drive motor, secondary driving motor and for by the main driving Motor and the power of secondary driving motor output are transferred to the transmission system of wheel shaft；The transmission system include transmission shaft, coupling it is poor Fast device, multi-gear transmission transmission mechanism and driving differential mechanism；The main drive motor is passed power by multi-gear transmission transmission mechanism It is handed to the right axle shaft gear of coupling differential mechanism, power is transferred to a left side for coupling differential mechanism by transmission shaft by the pair driving motor Axle shaft gear；The differential gear of the coupling differential mechanism is meshed with the differential gear of driving differential mechanism, and passes through driving Differential mechanism distributes power to the left half axle of vehicle and right axle shaft；

Further, the multi-gear transmission transmission system includes driving shaft and driven shaft, and in the driving shaft and The multiple groups power shift gear pair of power is transmitted between driven shaft；Synchronizer is equipped between adjacent power shift gear pair；The main driving electricity Power is transferred to the driving shaft by gear pair by the output shaft of machine；

Further, the left half axle gear of the coupling differential mechanism and right axle shaft gear are sequentially connected defeated in the first power respectively Enter axis and the second power input shaft；The front end of the transmission shaft is connected to the output of secondary driving motor by the first cardan drive The rear end of axis, transmission shaft is connected to jackshaft by the second cardan drive；It the rear end of the jackshaft will by bevel gear pair Power is input to the first power input shaft, and power is transferred to the second power input shaft by spur gear pair by the driven shaft；

Further, the power shift gear pair is respectively fast gear gear pair and slow gear gear pair；The fast gear gear pair includes Fixed jacket in the driving shaft fast gear driving gear and be rotatably coated at the fast gear driven gear of the driven shaft；Institute State slow gear gear pair include fixed jacket in the driving shaft slow gear driving gear and be rotatably coated at the driven shaft Slow gear driven gear；The synchronizer is set to driven shaft and is located between fast gear driven gear and slow gear driven gear；

Further, the transmission shaft includes splined shaft, spline housing and central siphon；First universal joint is set to the central siphon Front end；Second universal joint is set to the rear end of the splined shaft, and the spline housing is fixed on the rear end of the central siphon simultaneously Pass through spline fitted with the splined shaft.

The utility model has the beneficial effects that the vehicle drive system of the utility model, the power of main drive motor passes through more Power is transferred to the right axle shaft gear of coupling differential mechanism by gear variable transmission mechanism, can change by multi-gear transmission transmission mechanism The transmission ratio of the drive path, to adjust the dynamic torque being transferred at coupling differential mechanism right axle shaft gear；Secondary driving motor Power is transferred to the left half axle gear of coupling differential mechanism by transmission shaft, the differential that the power after coupling passes through coupling differential mechanism Device gear is exported to the differential gear of driving differential mechanism, and driving differential mechanism distributes power to the left half axle of vehicle and right axle shaft Realize the driving of vehicle, therefore, the power of this drive system is supplied simultaneously by main drive motor and secondary driving motor, is greatly improved The driving power of vehicle.

Detailed description of the invention

The utility model is further described with reference to the accompanying drawings and examples.

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the schematic diagram of the differential mechanism of the utility model；

Fig. 3 is the structural schematic diagram of the transmission shaft of the utility model.

Specific embodiment

FIG. 1 is a schematic structural view of the utility model, as shown in the figure: the vehicle drive system of the present embodiment, including main driving Motor 19, secondary driving motor 1 and the power for exporting the main drive motor 19 and secondary driving motor 1 are transferred to wheel shaft Transmission system；The transmission system includes transmission shaft 20, coupling differential mechanism 15, multi-gear transmission transmission mechanism and driving differential mechanism； Power is transferred to the right axle shaft gear 25 of coupling differential mechanism 15, institute by multi-gear transmission transmission mechanism by the main drive motor 19 State the left half axle gear 22 that power is transferred to coupling differential mechanism 15 by transmission shaft 20 by secondary driving motor 1；The coupling differential The differential gear 16 of device 15 is meshed with the differential gear 7 of driving differential mechanism, and is distributed power by driving differential mechanism To the left half axle 6 and right axle shaft 8 of vehicle；

In the present embodiment, coupling differential mechanism 15 and the structure for driving differential mechanism are existing conical gear formula differential mechanism knot Structure, generally comprise shell 21 and left half axle gear 22 in shell 21, right axle shaft gear 25 and simultaneously with the left side The planetary gear 23 that axle shaft gear 22 and right axle shaft gear 25 engage, wheel shaft 24 and the shell 21 of planetary gear 23 are fixed to each other, differential Device gear (7 or 17) fixed jacket is in shell 21；Wherein, the differential gear 7 of differential mechanism is driven to be used to receive extraneous power Input, left half axle gear 22 and right axle shaft gear 25 are connected to the left half axle 6 and right axle shaft of vehicle by spline drived respectively 8, so that left and right half 8 be driven to rotate simultaneously；And the left half axle gear 22 and right axle shaft gear 25 for coupling differential mechanism 15 are for connecing It is inputted by extraneous power, power is exported by the differential gear 16 of coupling differential mechanism 15 outward then, couples differential mechanism 15 and driving differential mechanism specific structure be the prior art, this will not be repeated here, can refer to Publication No. 104972888A and discloses Double-power coupling device in differential design.

Power is transferred to right the half of coupling differential mechanism 15 by multi-gear transmission transmission mechanism by the power of main drive motor 19 Shaft gear 25 can change the transmission ratio of the drive path by multi-gear transmission transmission mechanism, thus adjust be transferred to coupling it is poor Dynamic torque at fast 15 right axle shaft gear 25 of device；Power is transferred to coupling differential mechanism by transmission shaft 20 by secondary driving motor 1 15 left half axle gear 22, the power after coupling extremely drive differential mechanism by the output of differential gear 16 of coupling differential mechanism 15 Power is distributed to the left half axle 6 of vehicle and right axle shaft 8 driving for realizing vehicle by differential gear 7, driving differential mechanism, therefore, The power of this drive system is supplied simultaneously by main drive motor 19 and secondary driving motor 1, substantially increases the driving power of vehicle. In the present embodiment, main drive motor 19 can be arranged close to vehicle rear axle, and secondary driving motor 1 can be arranged in vehicle chassis and lean on The position of front end.

In the present embodiment, the multi-gear transmission transmission system includes driving shaft and driven shaft 13, and in the master Two groups of power shift gear pairs of power are transmitted between moving axis and driven shaft 13；Synchronizer 12 is equipped between adjacent power shift gear pair；Institute Power is transferred to the driving shaft by gear pair 18 by the output shaft for stating main drive motor 19；The output shaft of main drive motor 19 On directly integrally formed with output gear, fixed jacket has the input gear engaged with output gear on driving shaft, described in two groups Power shift gear pair is respectively fast gear gear pair 14 and slow gear gear pair 17；The fast gear gear pair 14 includes fixed jacket in described The fast gear driving gear of driving shaft and the fast gear driven gear for being rotatably coated at the driven shaft 13；The slow gear gear pair 17 include fixed jacket in the driving shaft slow gear driving gear and rotatably be coated at the driven shaft 13 it is slow keep off from Moving gear；The synchronizer 12 is set to driven shaft 13 and is located between fast gear driven gear and slow gear driven gear, therefore, leads to Synchronizer 12 of overdriving, which is axially moveable, can make to keep off driven gear fastly or slow gear driven gear is combined with driven shaft 13；Synchronizer 12 Existing lock ring type synchronized 12 can be used, specific structure and working principle are the prior art, are repeated no more.

In the present embodiment, the left half axle gear 22 and right axle shaft gear 25 of the coupling differential mechanism 15 are passed by spline respectively Dynamic to be connected to the first power input shaft 9 and the second power input shaft 10, the first power input shaft 9 and the second power input shaft 10 are answered Pass through bearing support；The front end of the transmission shaft 20 is sequentially connected by the first universal joint 2 in the output shaft of secondary driving motor 1, The rear end of transmission shaft 20 is sequentially connected by the second universal joint 3 in jackshaft 4, and wherein existing Cardon universal joint can be used in universal joint Universal joint；The rear end of the jackshaft 4 (including is individually fixed in jackshaft 4 and the first power input shaft 9 by bevel gear pair 5 Drive bevel gear and driven wheel of differential) power is input to the first power input shaft 9, the driven shaft 13 passes through spur gear pair Power is transferred to by 11 (driving gears and driven gear including being individually fixed in driven shaft 13 and the second power input shaft 10) Second power input shaft 10.

In the present embodiment, as shown in Fig. 2, the transmission shaft 20 includes splined shaft 26, spline housing 28 and central siphon 27；Described One universal joint 2 is set to the front end of the central siphon 27；Second universal joint 3 is set to the rear end of the splined shaft 26, described Spline housing 28 is fixed on the rear end of the central siphon 27 and with the splined shaft 26 by spline fitted, and splined shaft 26 can be along axial direction It is slided relative to spline housing 28, therefore the length of adjustable entire transmission shaft 20, reduces assembly difficulty.

Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model It encloses, should all cover in the scope of the claims of the utility model.

Claims (5)

1. a kind of vehicle drive system, it is characterised in that: including main drive motor, secondary driving motor and be used for the main driving Motor and the power of secondary driving motor output are transferred to the transmission system of wheel shaft；The transmission system include transmission shaft, coupling it is poor Fast device, multi-gear transmission transmission mechanism and driving differential mechanism；The main drive motor is passed power by multi-gear transmission transmission mechanism It is handed to the right axle shaft gear of coupling differential mechanism, power is transferred to a left side for coupling differential mechanism by transmission shaft by the pair driving motor Axle shaft gear；The differential gear of the coupling differential mechanism is meshed with the differential gear of driving differential mechanism, and passes through driving Differential mechanism distributes power to the left half axle of vehicle and right axle shaft.

2. vehicle drive system according to claim 1, it is characterised in that: the multi-gear transmission transmission system includes actively Axis and driven shaft, and the multiple groups power shift gear pair for transmitting power between the driving shaft and driven shaft；Adjacent shift Synchronizer is equipped between gear pair；Power is transferred to the driving shaft by gear pair by the output shaft of the main drive motor.

3. vehicle drive system according to claim 2, it is characterised in that: it is described coupling differential mechanism left half axle gear and Right axle shaft gear is sequentially connected respectively in the first power input shaft and the second power input shaft；The front end of the transmission shaft passes through the One cardan drive is connected to the output shaft of secondary driving motor, and the rear end of transmission shaft is connected to centre by the second cardan drive Axis；Power is input to the first power input shaft by bevel gear pair by the rear end of the jackshaft, and the driven shaft passes through straight-tooth Wheel adjutant's power is transferred to the second power input shaft.

4. vehicle drive system according to claim 3, it is characterised in that: the power shift gear pair is respectively fast gear gear Secondary and slow gear gear pair；The fast gear gear pair includes fixed jacket in the fast gear driving gear of the driving shaft and can be rotated It is coated at the fast gear driven gear of the driven shaft；The slow gear gear pair includes that fixed jacket is led in the slow gear of the driving shaft Moving gear and the slow gear driven gear for being rotatably coated at the driven shaft；The synchronizer is set to driven shaft and is located at fast It keeps off between driven gear and slow gear driven gear.

5. vehicle drive system according to claim 4, it is characterised in that: the transmission shaft includes splined shaft, spline housing And central siphon；First universal joint is set to the front end of the central siphon；After second universal joint is set to the splined shaft End, the spline housing are fixed on the rear end of the central siphon and pass through spline fitted with the splined shaft.