CN211000931U - Two-gear electrically-driven transmission with coaxial input and output - Google Patents

Abstract

The utility model discloses a two keep off electrically driven derailleur that input and output are coaxial, including the motor, with motor fixed connection's derailleur housing, install differential mechanism, gear change mechanism and the actuating mechanism that shifts in the derailleur housing, gear change mechanism comprises two sets of planetary gear drive for with motor power transmission to differential mechanism output, the actuating mechanism that shifts acts on gear change mechanism to realize different drive ratios. The utility model discloses a power input shaft axis has effectively reduced the overall dimension of whole drive assembly with the coaxial collinear drive form of power output shaft axis, and occupation space is little, conveniently carries out whole car installation and arranges, has adopted two shelves of drive design moreover, can shift, can satisfy the demand of traveling of more complicated road conditions, and economic nature is good.

Description

Two-gear electrically-driven transmission with coaxial input and output

Technical Field

The utility model relates to a derailleur technical field, more specifically say, especially relate to a two fender electric drive derailleurs that input and output is coaxial.

Background

The electric automobile has the advantages of cleanness, no pollution, high energy efficiency and low noise, so that the industrialization of the electric automobile is not feasible. The driving system is one of the key parts of the electric automobile, at present, the driving system of the electric automobile on the market mostly adopts the driving form that a motor carries a three-shaft two-stage single-gear speed reducer, and has the defects that the size of the speed reducer is large, the appearance structure is complex, the whole automobile is not easy to install and arrange, and the driving form of the single-gear speed reduction is in suburbs or mountainous areas with complex road conditions, so that the economy is not good.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to above-mentioned prior art not enough, provide a two fender electric drive derailleurs that input and output are coaxial, occupation space is little, conveniently carries out whole car installation and arranges, but also can realize shifting.

In order to achieve the above object, the utility model adopts the following technical scheme: a two-gear electrically-driven transmission with coaxial input and output comprises a motor, a transmission shell fixedly connected with the motor, a differential mechanism arranged in the transmission shell, a gear speed change mechanism and a gear shifting execution mechanism of the gear speed change mechanism, wherein the gear speed change mechanism consists of two groups of planetary gear transmission mechanisms and is used for transmitting the power of the motor to the output of the differential mechanism, and the gear shifting execution mechanism acts on the gear speed change mechanism to realize different transmission ratios.

In the technical scheme of the utility model, the transmission shell is formed by assembling a left shell and a right shell, wherein the right shell of the transmission is fixedly connected with a motor through a first bolt; a motor shaft is arranged in the motor, the motor shaft is a hollow shaft, and one end of the motor shaft is installed in the right shell of the transmission through a first deep groove ball bearing.

The utility model discloses in the technical scheme, first set of planetary gear drive including set up at the epaxial one-level sun gear of motor output, with a plurality of one-level planet wheels of one-level sun gear engaged with and the one-level ring gear of one-level planet wheel engaged with, the one-level ring gear passes through deep groove ball bearing two to be installed in the derailleur right casing, the one-level planet wheel passes through bearing one to be installed on one-level planet wheel axle, one-level planet wheel axle is fixed in on the one-level planet carrier, be provided with deep groove ball bearing three between one-level planet carrier and the one-level ring gear.

In the technical proposal of the utility model, the second group of planetary gear transmission mechanism comprises a second grade sun gear fixedly connected with a first grade planet carrier through a second bolt, a plurality of second grade planet gears meshed with the second grade sun gear and a second grade gear ring meshed with the second grade planet gears, the secondary gear ring is fixed in the right shell of the transmission, the secondary planet wheel is arranged on a secondary planet wheel shaft through a needle bearing II, the secondary planet wheel shaft is fixed on a differential mechanism, a deep groove ball bearing IV is arranged between the differential mechanism and the left shell of the transmission, a deep groove ball bearing V is arranged between the second-stage sun gear and the transmission right shell, a deep groove ball bearing VI is arranged between the second-stage sun gear and the transmission right shell, the left short half shaft of the differential mechanism is exposed out of the left shell of the transmission, the right long half shaft penetrates through the middle of a motor shaft, and the tail end of the right long half shaft extends out of the motor and is mounted on a rear end cover of the motor through a deep groove ball bearing.

The utility model provides an among the technical scheme, shift actuating mechanism includes clutch collar, shift fork, guide bar and actuating lever, the actuating lever is installed in the top of reduction gear right side casing, the guide bar is fixed in on the reduction gear right side casing with actuating lever parallel arrangement, shift fork slidable mounting is on the guide bar, and passes through threaded connection between shift fork and the actuating lever, the clutch collar is fixed in the bottom of shift fork, promotes by the shift fork and transmits power between one-level ring gear and one-level planet carrier and second grade ring gear, all be equipped with on one-level ring gear, one-level planet carrier and the second grade ring gear with clutch collar matched with external splines.

The utility model discloses a power input shaft axis has effectively reduced the overall dimension of whole drive assembly with the coaxial collinear drive form of power output shaft axis, and occupation space is little, conveniently carries out whole car installation and arranges, has adopted two shelves of driven design moreover, can satisfy the demand of traveling of more complicated road conditions, and economic nature is good.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1-a motor; 2-left shell; 3-a right shell; 4, first bolt; 5-motor shaft; 6, a first deep groove ball bearing; 7-a first-stage sun gear; 8-primary planet wheel; 9-first-stage gear ring; 10-a deep groove ball bearing II; 11-a needle bearing I; 12-a primary planet wheel shaft; 13-a primary planet carrier; 14-deep groove ball bearing III; 15-bolt two; 16-a secondary sun gear; 17-a secondary planet wheel; 18-a secondary ring gear; 19-a needle bearing II; 20-a secondary planet wheel shaft; 21-a differential; 22-deep groove ball bearing IV; 23-deep groove ball bearing five; 24-deep groove ball bearing six; 25-minor half axis; 26-long half shaft; 27-deep groove ball bearing seven; 28-a coupling sleeve; 29-a shifting fork; 30-a guide bar; 31-driving the rod.

Detailed Description

The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention.

As shown in fig. 1, the utility model provides a pair of two grades of electrically driven derailleurs of coaxial input/output, including motor 1, with motor 1 fixed connection's gearbox housing, install differential mechanism 21, gear change mechanism and the actuating mechanism that shifts in the gearbox housing, gear change mechanism comprises two sets of planetary gear drive for export motor 1 power transmission to differential mechanism 21, the actuating mechanism that shifts acts on gear change mechanism to realize different drive ratios.

The transmission shell is formed by assembling a left shell 2 and a right shell 3, wherein the right shell 3 of the transmission is fixedly connected with the motor 1 through a first bolt 4; a motor shaft 5 is arranged in the motor 1, the motor shaft 5 is a hollow shaft, and one end of the motor shaft 5 is installed in the right shell 3 of the transmission through a deep groove ball bearing I6.

The first group of planetary gear transmission mechanisms comprise a primary sun gear 7 arranged on the output end of a motor shaft 5, a plurality of primary planet gears 8 meshed with the primary sun gear 7 and a primary gear ring 9 meshed with the primary planet gears 8, the primary gear ring 9 is mounted in a right transmission shell 3 through a deep groove ball bearing II 10, the primary planet gears 8 are mounted on a primary planet gear shaft 12 through needle bearings I11, the primary planet gear shaft 12 is fixed on a primary planet carrier 13, and a deep groove ball bearing III 14 is arranged between the primary planet carrier 13 and the primary gear ring 9.

The second group of planetary gear transmission mechanisms comprise a secondary sun gear 16 fixedly connected to the primary planet carrier 13 through a second bolt 15, a plurality of secondary planet gears 17 meshed with the secondary sun gear 16 and a secondary gear ring 18 meshed with the secondary planet gears 17, the secondary gear ring 18 is fixed in the right shell 3 of the transmission, the secondary planet wheel 17 is arranged on a secondary planet wheel shaft 20 through a needle bearing II 19, the secondary planet wheel shaft 20 is fixed on a differential 21, a deep groove ball bearing four 22 is arranged between the differential 20 and the left shell 2 of the transmission, a deep groove ball bearing five 23 is arranged between the right shell 3 of the transmission and a deep groove ball bearing six 24 is arranged between the second-stage sun gear 16, the short half shaft 25 at the left side of the differential 21 is exposed out of the left shell 2 of the transmission, the long half shaft 26 at the right side passes through the middle of the motor shaft 5, the tail end of the motor extends out of the motor 1 and is arranged on the rear end cover of the motor 1 through a deep groove ball bearing seven 26.

The actuating mechanism that shifts includes clutch collar 28, shift fork 29, guide bar 30 and actuating lever 31, actuating lever 31 is installed in the top of reduction gear right side casing 3, guide bar 30 is fixed in on reduction gear right side casing 3 with actuating lever 31 parallel arrangement, shift fork 29 slidable mounting is on guide bar 30, and passes through threaded connection between shift fork 29 and the actuating lever 31, clutch collar 28 is fixed in the bottom of shift fork 29, promotes by shift fork 29 and transmits power between one-level ring gear 9 and one-level planet carrier 13 and second grade ring gear 18, all be equipped with on one-level ring gear 9, one-level planet carrier 13 and the second grade ring gear 18 with clutch collar 28 matched with external splines.

When the driving rod 31 rotates clockwise, the shifting fork 29 moves leftwards and pushes the joint sleeve 28 to move leftwards, when the joint sleeve 28 moves to the leftmost end, the joint sleeve is combined with the secondary gear ring 18 and the primary gear ring 9 to enable the two to be connected together, the secondary gear ring 18 is fixed in the transmission right shell 3 and is stationary, therefore, the primary gear ring 9 is also stationary, at the moment, the system is in a first gear state, and power output by the motor 1 passes through the primary sun gear 7 on the motor shaft 5, sequentially flows through the primary planet gears 8, the primary planet carrier 13, the secondary sun gear 16, the secondary planet gears 17 and the differential 21, and is finally output through the long half shaft 25 and the short half shaft 26.

When the driving rod 31 rotates anticlockwise, the shifting fork 29 moves rightwards and pushes the joint sleeve 28 to move rightwards, when the joint sleeve 28 moves to the rightmost end, the joint sleeve is combined with the first-stage planet carrier 13 and the first-stage gear ring 9 to enable the first-stage planet carrier 13 and the first-stage gear ring 9 to be connected together, because the deep groove ball bearings III 14 are arranged between the first-stage planet carrier 13 and the first-stage gear ring 9, the deep groove ball bearings III and the deep groove ball bearings III can rotate mutually in a mutual motion mode, the system is in a second-gear state at the moment, power output by the motor 1 passes through the first-stage sun gear 7 on the motor shaft 5, sequentially flows through the first-stage planet gear 8, the first.

The utility model discloses a power input shaft axis has effectively reduced the overall dimension of whole drive assembly with the coaxial collinear drive form of power output shaft axis, and occupation space is little, conveniently carries out whole car installation and arranges, has adopted two shelves of drive design moreover, can shift, can satisfy the demand of traveling of more complicated road conditions, and economic nature is good.

Claims (5)

1. A two-gear electrically-driven transmission with coaxial input and output is characterized in that: the gear shifting mechanism comprises a motor, a transmission shell fixedly connected with the motor, a differential mechanism arranged in the transmission shell, a gear shifting mechanism and a gear shifting executing mechanism, wherein the gear shifting mechanism consists of two groups of planetary gear transmission mechanisms and is used for transmitting the power of the motor to the output of the differential mechanism, and the gear shifting executing mechanism acts on the gear shifting mechanism to realize different transmission ratios.

2. The input-output coaxial two-speed electrically-driven transmission according to claim 1, characterized in that: the transmission shell is formed by assembling a left shell and a right shell, wherein the right shell of the transmission is fixedly connected with the motor through a first bolt; a motor shaft is arranged in the motor, the motor shaft is a hollow shaft, and one end of the motor shaft is installed in the right shell of the transmission through a first deep groove ball bearing.

3. The input-output coaxial two-speed electrically-driven transmission according to claim 2, characterized in that: the first group of planetary gear transmission mechanisms comprise a primary sun gear, a plurality of primary planet gears and a primary gear ring, wherein the primary sun gear is arranged on the output end of a motor shaft, the plurality of primary planet gears are meshed with the primary sun gear, the primary gear ring is meshed with the primary planet gears, the primary gear ring is arranged in a right shell of the transmission through a deep groove ball bearing II, the primary planet gears are arranged on a primary planet gear shaft through a needle bearing I, the primary planet gear shaft is fixed on a primary planet carrier, and a deep groove ball bearing III is arranged between the primary planet carrier and the primary gear ring.

4. The input-output coaxial two-speed electrically-driven transmission according to claim 3, characterized in that: the second group of planetary gear transmission mechanisms comprise a secondary sun gear fixedly connected to the primary planet carrier through a second bolt, a plurality of secondary planet gears meshed with the secondary sun gear and a secondary gear ring meshed with the secondary planet gears, the secondary gear ring is fixed in the right shell of the transmission, the secondary planet wheel is arranged on a secondary planet wheel shaft through a needle bearing II, the secondary planet wheel shaft is fixed on a differential mechanism, a deep groove ball bearing IV is arranged between the differential mechanism and the left shell of the transmission, a deep groove ball bearing V is arranged between the second-stage sun gear and the transmission right shell, a deep groove ball bearing VI is arranged between the second-stage sun gear and the transmission right shell, the left short half shaft of the differential mechanism is exposed out of the left shell of the transmission, the right long half shaft penetrates through the middle of a motor shaft, and the tail end of the right long half shaft extends out of the motor and is mounted on a rear end cover of the motor through a deep groove ball bearing.

5. The input-output coaxial two-speed electrically-driven transmission according to claim 4, characterized in that: the gear shifting executing mechanism comprises a joint sleeve, a shifting fork, a guide rod and a driving rod, wherein the driving rod is installed at the top of the right shell of the speed reducer, the guide rod is fixed on the right shell of the speed reducer and is arranged in parallel with the driving rod, the shifting fork is slidably installed on the guide rod, the shifting fork and the driving rod are connected through threads, the joint sleeve is fixed at the bottom of the shifting fork, power is transmitted between the first-level gear ring and the first-level planet carrier and the second-level gear ring by pushing of the shifting fork, and the first-level gear ring, the first-level planet carrier and the second-level.

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