CN209224931U - A kind of vehicle drive system - Google Patents

Abstract

The utility model discloses a kind of vehicle drive systems, including the locking mechanism of the rotation of the second power input shaft described in the first power input shaft, the second power input shaft, differential mechanism I, power output shaft and lockable；First power input shaft and the second power input shaft are sequentially connected respectively in the left half axle gear and right axle shaft gear of differential mechanism I；The power output shaft fixed jacket has the transmission gear for engaging with the differential gear of the differential mechanism I；When vehicle power demand is lower, locking mechanism locks the rotation of the second power input shaft, and main drive motor works independently, when vehicle power demand is higher, locking mechanism releases the locking to the second power input shaft, and main drive motor and secondary driving motor work at the same time, to improve driving power.

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 systems suitable for two driving motors as power source, when vehicle power needs When asking lower, power only is supplied using one of motor, when vehicle power demand is higher, the transmission system is using two Motor supplies power simultaneously as power source, can preferably meet the demand of the vehicle power of user.

Utility model content

The vehicle drive system of the utility model, including it is the first power input shaft, the second power input shaft, differential mechanism I, dynamic The locking mechanism of the rotation of second power input shaft described in power output shaft and lockable；First power input shaft and second Power input shaft is sequentially connected respectively in the left half axle gear and right axle shaft gear of differential mechanism I；The power output shaft is fixed outer It is cased with the transmission gear for engaging with the differential gear of the differential mechanism I；

Further, the locking mechanism includes being coaxially disposed with second power input shaft and being fixed on the fixation of vehicle frame Axis, is coated at the fixing axle by spline and can be and fixed along the driving disc spacing pressing of fixing axle jaw clutch in axial sliding Jaw clutch driven disc in second power input shaft end；

Further, the locking mechanism includes fixed jacket in the brake disc of second power input shaft and can clamp The caliper of the brake disc；

The vehicle drive system of the utility model further includes speed change differential mechanism；The speed change differential mechanism includes actively Axis, driven shaft, differential mechanism II, left half axle and right axle shaft；Between the driving shaft and driven shaft not by least two groups transmission ratio Equal power shift gear pair transmits power；Synchronizer I is equipped between two adjacent groups power shift gear pair；The differential mechanism II, which is equipped with, to be used In the differential gear I and differential gear II of input power；The left half axle gear and right axle shaft gear of differential mechanism II pass respectively It is dynamic to be connected to the left half axle and right axle shaft；Being rotatably assorted on the driven shaft has intermediate gear I and intermediate gear II；In described Between gear I and intermediate gear II respectively correspond and engaged with the differential gear I and differential gear II, the intermediate gear I Synchronizer II is equipped between intermediate gear II；Power is transferred to the driving shaft by transmission shaft by the power output shaft；

Further, the transmission shaft includes splined shaft, spline housing and central siphon；The front end of the central siphon passes through the first universal joint It is connected to the power output shaft；The rear end of the splined shaft is connected to a bevel gear shaft by the second cardan drive, and leads to It crosses the bevel gear shaft and power is transferred to the driving shaft；The spline housing be fixed on the rear end of the central siphon and with the spline Axis passes through spline fitted.

The utility model has the beneficial effects that the vehicle drive system of the utility model, (example when vehicle power demand is lower As vehicle only on gentle road surface when driving), locking mechanism lock the second power input shaft rotation, main drive motor work Make, power is transferred to power output shaft by differential mechanism I；When vehicle power demand is higher (such as vehicle needs to climb When), locking mechanism releases the locking to the second power input shaft, and main drive motor and secondary driving motor work at the same time, and passes through difference Fast device I will be transferred to power output shaft after power coupling.

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 first embodiment；

Fig. 2 is the structural schematic diagram of the utility model second embodiment；

Fig. 3 is the structural schematic diagram of the utility model 3rd embodiment；

Fig. 4 is the structural schematic diagram of the differential mechanism I of the utility model；

Fig. 5 is the structural schematic diagram of the differential mechanism II of the utility model.

Specific embodiment

Embodiment one

Fig. 1 is the structural schematic diagram of the present embodiment, as shown in the figure: the vehicle drive system of the present embodiment, including first dynamic Second power input shaft 5 described in power input shaft 4, the second power input shaft 5, differential mechanism I 1, power output shaft 3 and lockable The locking mechanism of rotation；First power input shaft 4 and the second power input shaft 5 are sequentially connected respectively in a left side for differential mechanism I 1 Axle shaft gear and right axle shaft gear；3 fixed jacket of power output shaft has for the differential gear with the differential mechanism I 1 The transmission gear of 1-1 engagement；The transmission system of the present embodiment is applied to tool, and there are two power source (main drive motor 2 and secondary drivings Motor 9) vehicle on, wherein the rotating shaft transmission of main drive motor 2 is connected to the first power input shaft 4, and secondary driving motor 9 turns Axis by bevel gear pair to 5 input power of the second power input shaft (shaft of i.e. secondary driving motor 9 is fixed with drive bevel gear, Second power input shaft 5 is fixed with driven wheel of differential)；The differential mechanism I 1 of the present embodiment is that existing differential design is (such as public The number of opening is differential design disclosed in 203500421U), it generally comprises and is set to the intracorporal left half axle gear of shell and right axle shaft Gear, and the planetary gear engaged simultaneously with left half axle gear and right axle shaft gear, the wheel shaft of planetary gear pass through shell and and shell Body is fixed, and differential gear 1-1 fixed jacket is in shell；The shaft of main drive motor 2 and secondary driving motor 9 is distinguished by spline It is connect with left half axle gear and right axle shaft gear drive, thus to I 1 input power of differential mechanism, the differential gear of differential mechanism I 1 1-1 is as power output end to 3 output power of power output shaft；When vehicle power demand is lower, (such as vehicle is only gentle On road surface when driving), locking mechanism locks the rotation of the second power input shaft 5, and main drive motor 2 works, and power passes through difference Fast device I 1 is transferred to power output shaft 3；When vehicle power demand is higher while needing to climb (such as vehicle), locking mechanism is released Locking to the second power input shaft 5, main drive motor 2 and secondary driving motor 9 work at the same time, by differential mechanism I 1 by power coupling Power output shaft 3 is transferred to after conjunction.

In the present embodiment, the locking mechanism includes being coaxially disposed with second power input shaft 5 and being fixed on vehicle frame Fixing axle 8, the fixing axle 8 is coated at by spline and can be along the driving disc spacing pressing of the jaw clutch in axial sliding of fixing axle 8 7, and it is fixed on the jaw clutch driven disc 6 of 5 end of the second power input shaft；It is inputted when needing to lock the second power When axis 5 rotates, jaw clutch driving disc spacing pressing 7 can be pushed to slide axially, make tooth and jaw clutch driven disc 6 on its end face On tooth engagement, realize the second power input shaft 5 locking；When contact locking, jaw clutch driving disc spacing pressing 7 and driven disc are pushed 6 separation.

Embodiment two

The present embodiment on the basis of example 1 replaces with locking mechanism such as flowering structure, as shown in Fig. 2, the locking Mechanism includes fixed jacket in the brake disc 10 of second power input shaft and can clamp the caliper of the brake disc 10 11；The structure of existing vehicle disc brake, the caliper of existing disk brake can be used in brake disc 10 and caliper 11 11 are generally fixed on knuckle, and the present embodiment, which is fixed, to be mounted on vehicle frame, need to lock the rotation of the second power input shaft When, brake disc 10 is clamped by caliper 11.

Embodiment three

The vehicle drive system of the present embodiment increases speed change differential mechanism on the basis of example 1；Such as Fig. 3 institute Show, the speed change differential mechanism includes driving shaft 18, driven shaft, differential mechanism II, left half axle 25 and right axle shaft 28；The driving shaft Pass through secondary (i.e. gear gear pair 20 and slow gear gear pair 19 fastly) the transmitting power of at least two groups power shift gear between 18 and driven shaft；Phase Synchronizer I 21 is equipped between adjacent two groups of power shift gear pairs；The differential mechanism II is equipped with the differential gear I 26 for input power With differential gear II 27；25 gear of left half axle and 28 gear of right axle shaft of differential mechanism II are sequentially connected respectively in the left half axle 25 and right axle shaft 28；Being rotatably assorted on the driven shaft has intermediate gear I 22 and intermediate gear II 24；The intermediate gear I 22 It respectively corresponds with intermediate gear II 24 and is engaged with the differential gear I 26 and differential gear II 27, the intermediate gear I 22 Synchronizer II 23 is equipped between intermediate gear II 24；Power is transferred to the active by transmission shaft by the power output shaft Axis 18；Differential mechanism II is compared with differential mechanism I, is provided with a differential gear outside the shell of differential mechanism II more, remaining structure with Differential mechanism I is identical, and therefore, the differential mechanism II in the present embodiment is defeated with differential gear I 26 and differential gear II 27 two Enter end；When gear I 22 is mobile towards the middle for synchronizer II 23, intermediate gear I 22 will be in conjunction with driven shaft, the power of driven shaft Differential mechanism II will be inputted by differential gear I 26；When gear II 24 is mobile towards the middle for synchronizer II 23, intermediate gear II 24 will be in conjunction with driven shaft, and the power of driven shaft will input differential mechanism II by differential gear II 27；Therefore, driven shaft and poor Two shift gears are formd between fast device II, and also there are two gear of shifting gears, phase interworkings for tool between driving shaft 18 and driven shaft After conjunction, there are four gears for tool altogether for the speed change differential mechanism of the present embodiment.

In the present embodiment, the transmission shaft includes splined shaft 14, spline housing 15 and central siphon 13；The front end of the central siphon 13 is logical It crosses the first universal joint 12 and is connected to the power output shaft, the rear end of the splined shaft 14 is sequentially connected by the second universal joint 16 Power is transferred to the driving shaft 18 in a bevel gear shaft 17, and by the bevel gear shaft 17；The spline housing 15 is fixed on The rear end of the central siphon 13 is simultaneously with the splined shaft 14 by spline fitted, and in assembly, splined shaft 14 and spline housing 15 can be with Axially opposed sliding, to reduce 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 the first power input shaft, the second power input shaft, differential mechanism I, The locking mechanism of the rotation of second power input shaft described in power output shaft and lockable；First power input shaft and Two power input shafts are sequentially connected respectively in the left half axle gear and right axle shaft gear of differential mechanism I；The power output shaft is fixed Housing has the transmission gear for engaging with the differential gear of the differential mechanism I.

2. vehicle drive system according to claim 1, it is characterised in that: the locking mechanism includes moving with described second Power input shaft is coaxially disposed and is fixed on the fixing axle of vehicle frame, by spline be coated at the fixing axle and can along fixing axle axial direction The driving disc spacing pressing of the jaw clutch of sliding, and it is fixed on the jaw clutch driven disc of second power input shaft end.

3. vehicle drive system according to claim 2, it is characterised in that: the locking mechanism includes fixed jacket in institute It states the brake disc of the second power input shaft and the caliper of the brake disc can be clamped.

4. vehicle drive system according to claim 3, it is characterised in that: further include speed change differential mechanism；The speed change Box of tricks includes driving shaft, driven shaft, differential mechanism II, left half axle and right axle shaft；Pass through between the driving shaft and driven shaft The unequal power shift gear pair of at least two groups transmission ratio transmits power；Synchronizer I is equipped between two adjacent groups power shift gear pair；Institute It states differential mechanism II and is equipped with the differential gear I and differential gear II for being used for input power；The left half axle gear of differential mechanism II and Right axle shaft gear is sequentially connected respectively in the left half axle and right axle shaft；Being rotatably assorted on the driven shaft has I He of intermediate gear Intermediate gear II；The intermediate gear I and intermediate gear II are respectively corresponded to be nibbled with the differential gear I and differential gear II It closes, synchronizer II is equipped between the intermediate gear I and intermediate gear II；The power output shaft is passed power by transmission shaft It is handed to the driving shaft.

5. vehicle drive system according to claim 4, it is characterised in that: the transmission shaft includes splined shaft, spline housing And central siphon；The front end of the central siphon is connected to the power output shaft by the first universal joint；The rear end of the splined shaft passes through Second cardan drive is connected to a bevel gear shaft, and power is transferred to the driving shaft by the bevel gear shaft；The flower Key set is fixed on the rear end of the central siphon and passes through spline fitted with the splined shaft.