CN201025683Y

CN201025683Y - Gear shift electromotor for electric vehicle

Info

Publication number: CN201025683Y
Application number: CNU2007200354622U
Authority: CN
Inventors: 臧文叶
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-14
Filing date: 2007-03-14
Publication date: 2008-02-20
Anticipated expiration: 2017-03-14

Abstract

The utility model relates to a shift motor, in particular to the shift motor for an electric vehicle, comprising a motor and a gear reducer box. Two annular gears and two grades of planetary gears are arranged inside the gear reducer box. When driving uphill, the user chooses gears, and the speed of the electric vehicle is reduced at an original normal driving base via running of the two grades of planetary gears, therefore torque is increased and a task that the electric vehicle is driven with load is meet, so a series of problems due to the load are reduced. The utility model has simple operation, convenient structure, low cost and good practicality, which promotes generalization and application of the electric vehicle.

Description

Electric vehicle shift motor

Technical field

The utility model relates to a kind of shift motor, particularly a kind of electric vehicle shift motor.

Background technology

Electric motor car is that a kind of economy is free of contamination, be particularly suitable for the small-sized bogie that China rural area and the combination area of city and country use, it gives vehicular electric machine by storage battery power supply, dragging car body enforcement load-carrying by motor generation drawing force again drags, because the relative motor of load of electric motor car is bigger, therefore, the motor of electric motor car must be exported bigger moment of torsion and more moderate rotating speed, could satisfy the requirement of electric motor car operation, particularly electric vehicle loading goes up a slope, moment of torsion that need be bigger just than normal operation, existing electric motor car uses the primary planet pinion motor usually, but moment of torsion and speed that the one-level gear motor produces under normal circumstances can be implemented, when going up a slope, vehicle load just obviously feels painstaking, if and user overload uses usually overload operation of motor, increase power consumption, be easy to cause burn-down of electric motor.

Summary of the invention

The purpose of this utility model is in order to solve the problem of above-mentioned proposition, and a kind of electric motor car can bear a heavy burden easily upward slope and non-damageable motor of allowing is provided.

Realize that the technical scheme that the utility model purpose is adopted is: a kind of electric vehicle shift motor, have motor and gear reduction box, and both are fixed together, two ring gears and two-stage planet are arranged in the gear reduction box, first order planetary gear comprises central gear, planet carrier, compound planet gear, second level planetary gear comprises central gear, planet carrier, single planetary gear, the central gear of two-stage planet all is configured on the armature spindle of motor, central gear 51 is littler than central gear 41, and and the output semiaxis has same axis, the output semiaxis is configured on the two-stage planet carrier, each planetary gear that is configured on the planet carrier meshes with central gear at the same level and ring gear simultaneously, the casing top of gear reduction box has two holes, respectively place an activity orientation post in the hole, each ring gear is provided with two grooves, so that positive and negative rotation.

Specifically, compound planet gear in the first order planetary gear has one grade of gear and intermediate gear, one grade of gear and ring gear engagement, intermediate gear and central gear engagement, planetary gears at different levels all are provided with 3 planetary gears, evenly branch respectively is provided with 3 planet axis on the planet carriers at different levels around armature spindle.

Described output semiaxis tail end is connected with two planet carrier bolts, and front end is connected with gear reduction box.

Described gear reduction box body front end is set to the inclined cover type shape.

Described groove cuts into " L " shape, is symmetrically distributed in two ring gear both sides.

The beneficial effects of the utility model are: adopt two-stage planet shift motor, when going up a slope, needs select shift, make electric motor car on the basis of original cruising, reduce speed, increased moment of torsion, satisfied the task that electric vehicle loading goes up a slope, thereby a series of problems that may occur have been reduced because of load-carrying, simple to operate when the user exercises, structure is convenient, and cost is low, have good practicability, promoted promoting the use of electric motor car.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is an A-A profile of the present utility model.

Fig. 3 is a B-B profile of the present utility model.

Among the figure: 1. motor, 2. gear reduction box, 31,32. ring gears, 41,51. central gears, 42,52. planet carriers, 43. compound planet gear, 431. one grades of gears, 432. intermediate gears, 53. single planetary gears, 6. armature spindle, 7. output semiaxis, 8. planet axis, 9. activity orientation post, 10. groove.

Embodiment

Following with reference to accompanying drawing, the utility model is described in further detail: a kind of electric motor car shift motor, have motor 1 and gear reduction box 2, and both are fixed together, two ring gears 31 are arranged in the

gear reduction box

2,32 and two-stage planet, first order planetary gear comprises central gear 41, planet carrier 42, compound planet gear 43, second level planetary gear comprises central gear 51, planet carrier 52, single planetary gear 53, the

central gear

41 and 51 of two-stage planet all is configured on the armature spindle 6 of motor, and central gear 51 is littler than central gear 41, has same axis with output semiaxis 7 simultaneously, output semiaxis 7 tail ends are connected with two planet carrier bolts, front end is connected with gear reduction box 2, each planetary gear that is configured on the planet carrier meshes with central gear at the same level and ring gear simultaneously, the casing front end of gear reduction box 2 is set to the inclined cover type shape, the top has two holes, respectively place an activity orientation post 9 in the hole, each ring gear is provided with two grooves 10, cut into " L " shape, be symmetrically distributed in two ring gear both sides, so that positive and negative rotation.

Planetary gears at different levels all are provided with 3 planetary gears in the utility model, and evenly branch respectively is provided with 3 planet axis on the planet carriers at different levels around armature spindle, has 6 planet axis.And first order planetary gear is arranged to compound planet gear, purpose is exactly that what special requirement direct current machine is not had, and adopts common DC motor just passable, further changes speed and moment of torsion by compound planet gear.

When beginning to exercise, make A place reference column insert respective slot, at this moment ring gear 31 is fixed with casing, under the drive of armature spindle 6, the running of first order planetary gear, make electric motor car have a speed and certain moment of torsion to overtake, in the time will going up a slope, make B place reference column insert respective slot, at this moment A place reference column breaks away from groove, ring gear 32 is fixed with casing, under the drive of armature spindle 6, second level planetary gear entry into service is because second level central gear is littler than first order central gear, when identical armature spindle 6 is imported identical power, at this moment it is big to export before the torque ratio of semiaxis 7 output the moment of torsion of output, and speed is littler than original, so just can not feel painstaking when going up a slope, reduced load to motor, also reduced the possibility of burn-down of electric motor, when wanting descending, we discharge two reference columns, each gear is equivalent to idle running, so just descending smoothly.

A kind of electric vehicle shift motor described in the utility model, what of the electric motor car nominal load of actual production are the size of the number of teeth of its gear and axle can come concrete settings according to, thereby realize better heavy burden climbing function.

Claims

1. electric vehicle shift motor, have motor (1) and gear reduction box (2), and motor (1) and gear reduction box (2) are fixed together, it is characterized in that: two ring gears (31 are arranged in the gear reduction box (2), 32) and two-stage planet, first order planetary gear comprises central gear (41), planet carrier (42), compound planet gear (43), second level planetary gear comprises central gear (51), planet carrier (52), single planetary gear (53), the central gear (41 of two-stage planet, 51) all be configured on the armature spindle (6) of motor, central gear (51) is littler than central gear (41) radius, and and output semiaxis (7) has same axis, output semiaxis (7) is configured on the two-stage planet carrier, each planetary gear that is configured on the planet carrier meshes with central gear at the same level and ring gear simultaneously, the casing top of gear reduction box (2) has two holes, respectively place an activity orientation post (9) in the hole, each ring gear is provided with two grooves (10).

2. electric vehicle shift motor according to claim 1, it is characterized in that: the compound planet gear in the first order planetary gear (43) has one grade of gear (431) and intermediate gear (432), one grade of gear (431) and ring gear (31) engagement, intermediate gear (432) and central gear (41) engagement, planetary gears at different levels all are provided with 3 planetary gears, evenly branch respectively is provided with 3 planet axis (8) on the planet carriers at different levels around armature spindle (6).

3. electric vehicle shift motor according to claim 1 is characterized in that: output semiaxis (7) tail end is connected with two planet carrier bolts, and front end is connected with gear reduction box (2).

4. electric vehicle shift motor according to claim 1 is characterized in that: gear reduction box (2) casing front end is set to the inclined cover type shape.

5. electric vehicle shift motor according to claim 1 is characterized in that: groove (10) cuts into " L " shape, is symmetrically distributed in ring gear (31) or (32) both sides.