Three-speed planetary gear automatic transmission and pure electric vehicle

An automatic transmission and planetary gear technology, applied in the field of vehicle transmission system, can solve the problems of unstable transmission, large structure occupied space, single transmission ratio, etc., and achieve the effect of simple and compact structure, space saving and stable transmission

Active Publication Date: 2020-08-18
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a three-speed planetary gear automatic transmission to solve the technical problems in the prior art such as single transmission ratio, unstable transmission, and large structure occupation space.

Method used

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  • Three-speed planetary gear automatic transmission and pure electric vehicle
  • Three-speed planetary gear automatic transmission and pure electric vehicle
  • Three-speed planetary gear automatic transmission and pure electric vehicle

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specific Embodiment approach

[0057] Please also refer to figure 2 and image 3 , as a specific embodiment of the three-speed planetary gear automatic transmission provided by the present invention, the planetary ring gear 15 has a gear part and a brake part, the first brake B1 is installed on the brake part, and the first brake B1 includes a brake Band 22, brake housing 23, brake motor 20 and motor push rod 21, brake band 22 and brake housing 23 all have openings, brake motor 20 is installed on one end of brake housing 23, and the push rod of brake motor 20 The rod is connected with one end of the brake band 22, and the other end of the brake housing 23 is connected with the other end of the brake band 22 by means of an adjustment screw. The adjustment screw is provided with an adjustment nut, and the brake motor 20 pushes the motor push rod 21 to compress the system. The moving belt 22 brakes the planetary ring gear 15 . The combination relationship between the planetary ring gear 15 and the first bra...

Embodiment approach

[0069] see figure 1 , as a specific implementation of the three-speed planetary gear automatic transmission provided by the present invention, the planetary gear train is arranged close to the main driving motor M1, the second gear driving gear 4 is far away from the driving main motor M1, and the first gear driving gear 6 is in the second gear Between the driving gear 4 and the planetary gear train.

[0070] refer to figure 1 , as a specific embodiment of the three-speed planetary gear automatic transmission provided by the present invention, when the first and second gears are shifted, the auxiliary motor M2 intervenes to work and directly drives the output shaft to rotate, so that the power is continuous when shifting gears.

[0071] Another object of the present invention is to provide a pure electric vehicle equipped with the three-speed planetary automatic transmission. The pure electric vehicle has the advantages of simplicity and compactness, stable transmission, and...

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Abstract

The invention provides a third gear planetary gear automatic transmission and a pure electric vehicle, and belongs to the technical field of vehicle transmission systems. The third gear planetary gearautomatic transmission includes a first gear meshing pair G1, a second gear meshing pair G2, a shifting mechanism, a planetary gear train, a third gear driven gear, a main retarder gear meshing pairG3, a parking ratchet, an axle and left and right axles, wherein the shifting mechanism is arranged between the first gear meshing pair G1 and the second gear gearing pair G2; a planetary ring gear isbraked by a brake B1; a planetary carrier is braked by a brake B2; the third gear driven gear is sleeved on an output shaft and meshed with the planetary ring gear; the third gear driven gear is clutched by a clutch C1 mounted on the output shaft; the parking ratchet is braked by the parking mechanism, so that the deceleration parking is achieved; the axle and the left and right axles achieves power transmission through the first gear meshing pair G1, the second gear meshing pair G2, and the main retarder gear meshing pair G3. The third gear planetary gear automatic transmission has the advantages of simple and compact structure, stable transmission and wide transmission ratio range.

Description

technical field [0001] The invention belongs to the technical field of vehicle transmission systems, and more specifically relates to a three-speed planetary gear automatic transmission and a pure electric vehicle. Background technique [0002] At present, the transmission ratio range of pure electric vehicle transmission is relatively narrow, and most of them are in the form of two-stage fixed reducer. economic requirements. In order to obtain a larger range of speed ratios, some transmissions have relatively high requirements for gears and main reduction gears. In addition, traditional worm gears and gear pair shift actuators take up a lot of space in the layout, which is very important for transmissions. size has an adverse effect. In addition, the interruption of shifting power of the transmission is relatively common, which has a great impact on the performance of the car. Contents of the invention [0003] The object of the present invention is to provide a three-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/44F16H61/32
CPCF16H3/44F16H61/32F16H2061/326
Inventor 陈勇王哲李光鑫曹展臧立彬郑阳阳
Owner HEBEI UNIV OF TECH
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