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Two-gear transmission

A transmission and brake technology, which is applied in the direction of gear transmission, belt/chain/gear, mechanical equipment, etc., can solve the problems of not being able to make full use of two-speed transmissions, shifting failures, and high requirements for control systems, and achieve simple and reliable shifting methods , The shifting process is smooth and simple, and the effect of low control system requirements

Pending Publication Date: 2019-07-16
熊建文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the traditional two-speed transmissions remove the clutch on the basis of manual transmissions, and shift gears through motor speed regulation. This kind of shifting method has extremely high requirements on the control system, and the phenomenon of shifting failure may occur, resulting in repeated shifts. gear, can not make full use of the advantages of the two-speed transmission

Method used

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Examples

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Embodiment Construction

[0017] like figure 1 As shown, the two-speed transmission provided by this embodiment includes a constant mesh tooth two-way overrunning clutch 1 , a shunt assembly 2 and a brake 3 arranged in the casing.

[0018] like figure 2 As shown, the constant mesh tooth two-way overrunning clutch 1 includes fixed teeth 11 , input teeth 12 , transmission assembly 13 and output member 14 . The fixed teeth 11 and the input teeth 12 are ring gears with the same specifications, and the fixed teeth are fixed in the casing. The transmission assembly 13 is three long planetary gears evenly distributed in the ring gear, and one end of the long planetary gears meshes with the fixed ring gear. , the other end meshes with the input ring gear; the output member 14 is a planetary carrier fixedly connected to each long planetary gear shaft. One end of the same long planetary gear meshes with the fixed ring gear, and the other end meshes with the input ring gear to ensure that the ratio of the numb...

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Abstract

The invention discloses a two-gear transmission. The two-gear transmission comprises a normal meshing tooth two-way overrunning clutch, a shunting assembly and a brake; and the shunting assembly comprises an input element and two shunting elements, one shunting element is directly connected with the output end of the normal meshing tooth two-way overrunning clutch, the other shunting element is directly connected with the input end of the normal meshing tooth two-way overrunning clutch and externally provided with the brake, the input element of the shunting assembly serves as input of the two-gear transmission, and output of the normal meshing tooth two-way overrunning clutch serves as output of the two-gear transmission. When the brake does not work, two transmission paths simultaneouslysupply power to achieve joint driving, and the low speed and the large torque are output; and when the brake works, one transmission path is locked, and the high speed and the low torque are output.According to the two-gear transmission, shifting of two gears can be achieved only through one brake, the requirements for a control system are low, the gear shifting mode is simple and reliable, thegear shifting process is steady and simple, power failure can not occur in the gear shifting process, and the two-gear transmission is an ideal transmission of an electric automobile.

Description

technical field [0001] The invention belongs to the technical field of mechanical transmission, in particular to a two-speed transmission. Background technique [0002] At present, most electric vehicles on the market are driven by a motor plus a single-stage reducer. The benefits of a single-stage reducer are very obvious, with a simple structure, small size and high transmission efficiency. However, the shortcomings of single-stage reducer are also prominent. In the case of high speed, the efficiency and torque of the motor will drop rapidly, and the noise will increase significantly. Long-term high-speed driving will seriously affect the battery life of the car; when the car starts, the motor will Outputting a short-term high torque has very high requirements on the instantaneous peak power of the car battery, the overload capacity of the controller, and the overload capacity of the motor. Therefore, pure electric vehicles need a two-speed transmission to improve power a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/44F16H3/72F16H3/70
CPCF16H3/44F16H3/72F16H3/70
Inventor 熊建文
Owner 熊建文
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