CN109910603A

CN109910603A - Electro-tricycle drive assembly

Info

Publication number: CN109910603A
Application number: CN201711321284.4A
Authority: CN
Inventors: 周伟
Original assignee: Chongqing Xuan Tong Mechanical And Electrical Co Ltd
Current assignee: Chongqing Xuan Tong Mechanical And Electrical Co Ltd
Priority date: 2017-12-12
Filing date: 2017-12-12
Publication date: 2019-06-21

Abstract

The invention discloses a kind of electro-tricycle drive assembly, including power motor, speed changer and differential mechanism, differential mechanism includes differential casing and differential gear component, differential casing is monolithic construction, and the present invention uses monolithic construction using the speed change system for having shelves, differential casing, preferable concentricity is determined when processing, thus it is easy to guarantee concentricity during the installation process, is mounted directly, improves installation effectiveness；Due to being monolithic construction, thus being used for a long time is not in concentricity problem, is not in eccentric wear between kinematic pair, conducive to the service life for extending differential mechanism and entire retarder, reduces use cost；Since there is no eccentric wear, substantially reduce using energy consumption, conducive to the mileage travelled extended after electric vehicle charging.

Description

Electro-tricycle drive assembly

Technical field

The present invention relates to a kind of automotive component, in particular to a kind of electro-tricycle drive assembly.

Background technique

Electric vehicle (two-wheeled, three-wheel and electric car) is travelled by power drive electric vehicle of onboard power battery, by Have the characteristics that energy-saving and environmental protection are light in electric vehicle, and cost of use is lower, is more and more taken seriously.

For electric vehicle since compact structure and easy to use and use cost is low, more is applied to rural area, small towns and cities and towns It is used locally for transport cargo and personnel；Since electric vehicle has These characteristics, the speed changer of electric vehicle, which does not use generally, shelves Speed change, directly by controlling to adjust motor speed come regulation speed；And uphill way biggish for output torque, utilization are existing Single speed changer structure, can only increase electricity output achieve the purpose that climbing, it will cause the more wastes of electricity, and And since the more consideration of speed changer structure is travelled to level land, thus, increase electricity output for climbing effect achieved simultaneously It is undesirable, or even sometimes will appear motor rotation blockage phenomenon.

For three-wheel and carriage, the differential mechanism on rear axle is then essential component；Differential mechanism is as a kind of Transmission parts need its compact-sized, generally comprise differential shell, planetary gear and axle shaft gear, since planetary gear passes through difference Fast device shell drives revolution, thus differential casing is wherein more important transmission parts；In the prior art, differential casing Corresponding with left and right axle shaft gear that split type structure is made, in order to receive power input, the differential casing of split type structure is also It clamps and is fastened by bolts setting gear；In fact, since differential casing needs to rotate and be driven, a left side for Split type casing Between right two parts, it is both needed to guarantee good concentricity between the two parts and gear, just can guarantee the normal operation of differential mechanism, And guarantee its service life and higher transmission efficiency.And in practical application, between left and right two parts of Split type casing, this two Due to rigging error, the concentricity and bad assurance between part and gear, extend assembly period, reduces working efficiency；Meanwhile Even if guaranteeing concentricity when assembly, after longtime running, it still will appear coaxiality deviation in external environment and operation factor, The problem of due to concentricity, causes friction energy loss higher, wastes drive energy.

Therefore, it is necessary to improve to existing electric vehicle transmission, using the speed change system for having shelves, differential casing exists It is easy to guarantee concentricity in installation process, improves installation effectiveness, and being used for a long time is not in concentricity problem, extend differential The service life of device and entire retarder reduces use cost；Also, it since there is no eccentric wear, substantially reduces and is disappeared using the energy Consumption.

Summary of the invention

In view of this, the present invention provides a kind of electro-tricycle drive assembly, using the speed change system for having shelves, differential carrier Body is easy to guarantee during the installation process concentricity, improves installation effectiveness, and being used for a long time is not in concentricity problem, extends The service life of differential mechanism and entire retarder reduces use cost；Also, it since there is no eccentric wear, substantially reduces using energy Source consumption.

The invention discloses a kind of electro-tricycle drive assembly, including power motor, speed changer and differential mechanism, the differences Fast device includes differential casing and differential gear component, and the differential casing is monolithic construction.

Further, the speed changer is two speed transmission, defeated including case of transmission and power parallel and being set side by side Enter axis, jackshaft and the power output shaft as the input of differential mechanism power, the power input shaft is for receiving power motor Output power and transmission cooperation are equipped with power and input driving gear, and the jackshaft is equipped with slow shelves driving gear, fast shelves actively Gear and for power input driving gear engage and by power input jackshaft power input driven gear, the power Output shaft is equipped with slow shelves driven gear and fast shelves driven gear, with can between the slow shelves driving gear and slow shelves driven gear Make between jackshaft and power output shaft cut off or engage mode engage to form slow shelves transmission chain, the fast shelves driving gear and It engages to form fast shelves transmission in a manner of it can make to cut off or engage between jackshaft and power output shaft between fast shelves driven gear Chain；

Further, the slow shelves driving gear and fast shelves driving gear, which are driven with jackshaft, cooperates, and the slow shelves are driven Gear and fast shelves driven gear cooperate with pto shaft drive, positioned at slow shelves driven gear and fastly on the power output shaft Housing setting gear shift connector, power output shaft pass through in a manner of the circumferencial direction transmission that can slide axially between shelves driven gear The gear shift connector slides axially and engages slow shelves transmission with slow shelves driven gear, engages fast shelves transmission or shape with fast shelves driven gear At neutral gear；

Further, the fast shelves driven gear is set to power output shaft, the fast shelves driven tooth by freewheel clutch Wheel cooperates with the transmission of the outer ring of freewheel clutch and the freewheel clutch be set in the mode that the direction that fast shelves are driven is engaged it is dynamic Power output shaft, the inner ring of freewheel clutch, which is rotatably assorted, is coated at power output shaft, the gear shift connector by with surmount from The inner ring of clutch, which is engaged or disconnected, to be made fast shelves driven gear and pto shaft drive or is rotatably assorted；

Further, the power input shaft is power motor main shaft；

Further, the detachable transmission cooperation of the armature spindle of the power input shaft and power motor；

Further, the integrally formed cavity being equipped with for accommodating differential mechanism of the case of transmission, the differential casing It is set in rotation with case of transmission；

Further, the pto shaft drive is equipped with power output driving gear, is driven with differential casing It is equipped with the power output driven gear engaged with the deceleration of power output driving gear；The power inputs driving gear and moves Power inputs driven gear deceleration engagement；

Further, the planet wheel spindle of differential mechanism passes through differential casing and is consolidated by the fixed pin radially across planet wheel spindle Due to differential casing, the extension shaft section of the extension shaft section of the left half axle gear of differential mechanism and right axle shaft gear respectively with differential mechanism Housing into rotation cooperation；

Further, the integrally formed assembled shaft being equipped with for assembling power output driven gear on the differential casing Section, the differential casing form the step that radial dimension is greater than assembly shaft part, and the power output driven gear is coated at this Assembly shaft part and be axially against the axial end face of step in a manner of axially and radially locating detachable fixing assembling in differential Device shell.

Beneficial effects of the present invention: electro-tricycle drive assembly of the invention, using the speed change system for having shelves, differential mechanism Shell uses monolithic construction, and when processing determines preferable concentricity, thus is easy to guarantee concentricity during the installation process, directly Installation improves installation effectiveness；Due to being monolithic construction, thus being used for a long time is not in concentricity problem, kinematic pair Between be not in eccentric wear, conducive to the service life for extending differential mechanism and entire retarder, reduce use cost；Since there is no Eccentric wear is substantially reduced using energy consumption, conducive to the mileage travelled extended after electric vehicle charging.

Detailed description of the invention

The invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the first example structure schematic diagram of the invention；

Fig. 2 is differential design figure；

Fig. 3 is second of example structure schematic diagram of the invention.

Specific embodiment

Fig. 1 is the first example structure schematic diagram of the invention, and Fig. 2 is differential design figure, as shown in the figure: the present embodiment Electro-tricycle drive assembly, including power motor 22, speed changer and differential mechanism, the differential mechanism include differential casing 1 With differential gear component, the differential casing belongs to existing structure for monolithic construction differential gear component, including Planetary gear 5, left half axle gear 2 and right axle shaft gear 4, details are not described herein；To facilitate installation, the differential casing 1 Equipped with the installation via hole passed through for installing gear assembly；The case of transmission 1 of monolithic construction need to be located at side and be equipped with installation Via hole, or using whole rack and panel construction, for installing planetary gear 5 and axle shaft gear (left half axle gear 2 and right axle shaft gear 4) pass through and operate, and installation via hole can be lubricating oil and pass through, and be conducive to lubrication.

In the present embodiment, the speed changer is two speed transmission, including case of transmission 18 with it is parallel and be set side by side Power input shaft 21, jackshaft 16 and the power output shaft 13 as the input of differential mechanism power, the power input shaft 21 are used for Receive the output power of power motor 22 and transmission cooperation is equipped with power and inputs driving gear 19, the jackshaft 16 is equipped with slow Shelves driving gear 16, fast shelves driving gear 20 and for power input driving gear 19 engage and by power input jackshaft 16 Power input driven gear 17, the power output shaft 13 be equipped with slow shelves driven gear 11 and fast shelves driven gear 23, institute It states between slow shelves driving gear 16 and slow shelves driven gear 11 can make to cut off or connect between jackshaft 16 and power output shaft 13 The mode of conjunction engages to form slow shelves transmission chain, can make jackshaft between the fast shelves driving gear 20 and fast shelves driven gear 23 The mode cut off or engaged between 16 and power output shaft 13 engages to form fast shelves transmission chain；Using triple axle structure and side by side Run-in index arrangement so that entire speed changer structure is compact, and is all made of case of transmission and directly supports, is driven more steady；It is dynamic Power input shaft 21, jackshaft 16 and power output shaft 13 are set in case of transmission 18, and rotational support respectively, and power is defeated Case of transmission 18 need to be stretched out and receive the power input of power motor 22 by entering axis 21, belong to existing speed changer structure, herein It repeats no more.

In the present embodiment, the slow shelves driving gear 16 and fast shelves driving gear 20 are driven with jackshaft 16 and cooperate, institute It states slow shelves driven gear 11 and fast shelves driven gear 23 and is driven with power output shaft 13 and cooperated, the power output shaft 13 is upper Housing setting is changed in a manner of the circumferencial direction transmission that can slide axially between slow shelves driven gear 11 and fast shelves driven gear 23 Shelves connector 12, power output shaft 13 is slid axially by the gear shift connector 12 engages slow shelves biography with slow shelves driven gear 11 It moves, fast shelves transmission is engaged with fast shelves driven gear 23 or forms neutral gear；That is: gear shift connector 12 can slide to slow shelves driven gear 11 It is engaged with it and makes to form transmission chain between power output shaft and slow shelves driven gear 11；Alternatively, gear shift connector 12 can slide to Fast shelves driven gear 23 is engaged with it and makes to form transmission chain between power output shaft 13 and fast shelves driven gear 23；Alternatively, changing Shelves connector 12 can slide to and form neutral gear between fast shelves driven gear 23 and slow shelves driven gear 11；Belong to existing gear shift engagement Device structure and function, details are not described herein；Existing synchronizer structure can be used in gear shift connector 12；Gear shift connector is arranged In power output shaft, so that output control of engine power is sensitive, transmission efficiency is improved, and make gearshift procedure smooth.

In the present embodiment, the fast shelves driven gear 23 is set to power output shaft 13 by freewheel clutch 15, described Outer ring transmission cooperation and the freewheel clutch 15 of the fast shelves driven gear 23 with freewheel clutch 15 are nibbled in the direction that fast shelves are driven The mode of conjunction is set to power output shaft 13, and the inner ring 14 of freewheel clutch 15, which is rotatably assorted, is coated at power output shaft 13, institute Stating gear shift connector 12 and engaging or disconnect by the inner ring 14 with freewheel clutch 15 makes fast shelves driven gear 23 and power output Axis 13 is driven or is rotatably assorted, it may be assumed that gear shift connector 12 engages shape with the realization of fast shelves driven gear 23 by freewheel clutch 15 At fast shelves transmission chain, in the present embodiment, 15 outer ring of freewheel clutch and fast shelves driven gear 23 are integrally formed；Using overdrive clutch The assembling structure of device 15 may make gear shift connector 12 to engage with normality with 15 inner ring 12 of freewheel clutch, and when vehicle launch can It directly controls and advances, meanwhile, transmission chain is disconnected using the freewheel clutch in descending or propulsion and dynamical system is de- From traveling, the waste of the energy is avoided, meanwhile, so that electric vehicle operates succinctly conveniently under the premise of having shelves；And it is climbing When slope etc. needs power, gear shift connector can be engaged with slow shelves driven gear and drive traveling.

In the present embodiment, the power input shaft 21 is 22 main shaft of power motor, simple and compact for structure, reduces intermediate connection Assembling link, and concentricity keeps preferably, reducing the generation and power consumption of vibration.

Certainly, the detachable biography of armature spindle 25 of power input shaft 21a and power motor 22 as shown in Figure 3 can also be used Dynamic cooperation, can be used the structures such as shaft coupling, straight end-face key connection structure as shown in the figure can also be used；The assembly method has flexible Convenient feature.

In the present embodiment, the integrally formed cavity being equipped with for accommodating differential mechanism of the case of transmission 18, the differential Device shell 1 is set in rotation with case of transmission 18；Differential casing 1, which directly supports, is installed on case of transmission 18, so that The drive assembly of tricycle is compact-sized, and the transmission chain of power output is short, saves drive energy, meanwhile, so that power output is flat Surely, globality is stronger, uses more suitable for compact cars such as electric three-wheels；Certainly, between differential casing 1 and case of transmission 18 It need to be equipped with necessary transverse bearing, to reduce friction, details are not described herein.

In the present embodiment, the transmission of power output shaft 13 is equipped with power output driving gear 24, with differential mechanism Shell 1 is driven the power output driven gear 7 for being equipped with and engaging with the deceleration of power output driving gear 24；The power input Driving gear 19 is engaged with the power input deceleration of driven gear 17；Using the input/output structure of gear, transmission efficiency is higher, knot Structure is compact；Also, the characteristics of forming input and output double reduction structure, capable of more making full use of electro-tricycle small volume and less weight, and It is used more suitable for backroad.

In the present embodiment, the planet wheel spindle 3 of differential mechanism passes through differential casing 1 and by radially across planet wheel spindle 3 Fixed pin 6 is fixed on differential casing 1, the extension shaft section of the left half axle gear 2 of differential mechanism and the extension shaft section of right axle shaft gear 4 It is rotatably assorted respectively with differential casing 1；Certainly, piece differential cage body need to be equipped with necessary mounting hole, to make planet Gear and axle shaft gear are packed into, and details are not described herein.

In the present embodiment, integrally formed on the differential casing 1 be equipped with for assembling power output driven gear 7 Shaft part 10 is assembled, the differential casing 1 forms the step 8 that radial dimension is greater than assembly shaft part, the power output driven tooth Wheel 7 be coated at the assembly shaft part 10 and be axially against step 8 axial end face it is detachable in a manner of axially and radially locating Fixing assembling is in differential casing 1；Assembly shaft part 10 forms in differential casing 1 and is formed similar to stepped shaft structure, thus shape End face is circularized, it is radial directly fixed by the small shaft part of multi-diameter shaft after power output driven gear 7 is coated at the ladder shaft part Position, preferably guarantee concentricity；Meanwhile step end face necessarily forms axially position to power output driven gear, and passes through spiral shell Bolt 9 is fixed on the step end face, while having the function of accomplishing concentricity；It ensure that differential casing 1 and power output are driven Concentricity between gear 7.

In the present embodiment, the installation via hole is set to the radial sidewalls of differential casing, is set to radial sidewalls, not shadow The ability of transmitting torque is rung, and makes the housing compact, it is light-weight, it is suitable for electro-tricycle use；Radial sidewalls are Relative to the rotation direction of left half axle gear and right axle shaft gear, the i.e. rotation direction of differential casing.

In the present embodiment, the power output driven gear 7 is against step 8 and is anchored on the axis of the step 8 by bolt 9 To end face, the side that the power output driven gear 7 is against step 8 is equipped with the circular groove for accommodating step；Using this Circular groove structure is conducive to further positioning, and keeps its mounting structure compact, reduces volume.

In the present invention, passing through between power input shaft 21, jackshaft 16 and power output shaft 13 and case of transmission 18 must The annular bearing with rolling contact wanted is rotatably assorted, and belongs to the fit structure of the prior art, details are not described herein；In the present invention, pass Dynamic cooperation refers to cooperating in a manner of transmitting power, including the cooperation or integrally formed etc. of engaged transmission, spline drived.

Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this In the scope of the claims of invention.

Claims

1. a kind of electro-tricycle drive assembly, it is characterised in that: including power motor, speed changer and differential mechanism, the differential Device includes differential casing and differential gear component, and the differential casing is monolithic construction.

2. electro-tricycle drive assembly according to claim 1, it is characterised in that: the speed changer is two grades of speed changes Device, including case of transmission with power input shaft parallel and being set side by side, jackshaft and as the dynamic of differential mechanism power input Power output shaft, the power input shaft is used to receive the output power of power motor and transmission cooperation is equipped with power and inputs driving tooth Wheel, the jackshaft be equipped with slow shelves driving gear, fast shelves driving gear and for power input driving gear engage and incite somebody to action The power that power inputs jackshaft inputs driven gear, and the power output shaft is equipped with slow shelves driven gear and fast shelves driven tooth Wheel, between the slow shelves driving gear and slow shelves driven gear with can make between jackshaft and power output shaft cut off or engage Mode engages to form slow shelves transmission chain, jackshaft and power can be made defeated between the fast shelves driving gear and fast shelves driven gear The mode cut off or engaged between shaft engages to form fast shelves transmission chain.

3. electro-tricycle drive assembly according to claim 2, it is characterised in that: the slow shelves driving gear and fast shelves Driving gear, which is driven with jackshaft, to be cooperated, and the slow shelves driven gear and fast shelves driven gear are matched with pto shaft drive It closes, with the circumferencial direction transmission that can slide axially between slow shelves driven gear and fast shelves driven gear on the power output shaft Mode housing gear shift connector is set, power output shaft slid axially by the gear shift connector and engaged with slow shelves driven gear Slow shelves transmission engages fast shelves transmission with fast shelves driven gear or forms neutral gear.

4. electro-tricycle drive assembly according to claim 3, it is characterised in that: the fast shelves driven gear passes through super More clutch is set to power output shaft, the outer ring transmission cooperation of the fast shelves driven gear and freewheel clutch and this surmount from Clutch is set to power output shaft in the mode that the direction that fast shelves are driven is engaged, and the inner ring of freewheel clutch, which is rotatably assorted, to be coated at Power output shaft, the gear shift connector, which is engaged or disconnected by the inner ring with freewheel clutch, makes fast shelves driven gear and power Output shaft is driven or is rotatably assorted.

5. according to claim 1 to electro-tricycle drive assembly described in 4 any claims, it is characterised in that: described dynamic Power input shaft is power motor main shaft.

6. according to claim 1 to electro-tricycle drive assembly described in 4 any claims, it is characterised in that: described dynamic The detachable transmission cooperation of the armature spindle of power input shaft and power motor.

7. according to claim 1 to electro-tricycle drive assembly described in 4 any claims, it is characterised in that: the change The integrally formed cavity being equipped with for accommodating differential mechanism of fast device shell, the differential casing are set in rotation with transmission case In vivo.

8. electro-tricycle drive assembly according to claim 7, it is characterised in that: the pto shaft drive cooperation It is provided with power output driving gear, is equipped with differential casing transmission and is moved with what the deceleration of power output driving gear was engaged Power exports driven gear；The power input driving gear is engaged with power input driven gear deceleration.

9. electro-tricycle drive assembly according to claim 8, it is characterised in that: it is poor that the planet wheel spindle of differential mechanism passes through Fast device shell is simultaneously fixed on differential casing by the fixed pin radially across planet wheel spindle, and the left half axle gear of differential mechanism prolongs The extension shaft section for stretching shaft part and right axle shaft gear is rotatably assorted with differential casing respectively.

10. electro-tricycle drive assembly according to claim 9, it is characterised in that: one on the differential casing Forming is equipped with the assembly shaft part for assembling power output driven gear, and the differential casing forms radial dimension and is greater than assembly The step of shaft part, the power output driven gear are coated at the assembly shaft part and are against the axial end face of step axially with axial direction The detachable fixing assembling of mode with radial positioning is in differential casing.