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Hybrid tractor continuously variable transmission

A continuously variable transmission and hybrid technology, which is applied to the arrangement of multiple different prime movers of power units, general power units, and pneumatic power units, etc. Torque change and other issues, to achieve the effect of wide speed change range, compact transmission structure and reduced volume

Pending Publication Date: 2019-02-19
HENAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the power coupling device on the hybrid tractor mainly adopts a pair of meshing gear pairs with a fixed speed ratio or a single planetary gear. These two structures have the problem of small speed ratio range and constant torque when changing speed, so it is necessary to install multiple gears Transmission, so that the transmission structure is not too compact

Method used

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Embodiment Construction

[0017] Such as figure 1 As shown, a kind of hybrid tractor continuously variable transmission of the present invention comprises electric power system, transmission input shaft 7, transmission output shaft 21 and compound planetary gear mechanism, transmission input shaft 7 and transmission output shaft 21 are mutually flat and the ends are uniform The rotation is arranged on the casing of the speed change device.

[0018] The electric power system includes a first motor generator 3 and a second motor generator 6 , both of which are electrically connected to a battery 5 through a power controller 4 . The power controller 4 can be switched to make the storage battery 5 supply power to the first generator motor or the second generator motor to output torque, and the power controller 4 can also be switched to make the first generator motor and or the second generator motor generate electricity and charge the battery 5 in.

[0019] The compound planetary gear mechanism includes ...

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Abstract

The invention relates to the field of transmission equipment, in particular to a hybrid tractor continuously variable transmission. The hybrid tractor continuously variable transmission comprises a transmission input shaft, a transmission output shaft, an electric power system and a compound planetary gear mechanism. The hybrid tractor continuously variable transmission has the advantages that while the requirements of traction force, traction power and traction speed of various working conditions of a tractor are met, multi-stage continuous stepless speed change can be achieved, and two different hybrid power modes and special working modes such as loaded parking, brake energy recycling and parking for charging can also be achieved, thereby meeting the requirements of the complex workingconditions of the tractor; the speed range is wide, the transmission efficiency is high, good fuel economy and environmental protection of the tractor can be achieved, energy is saved, the efficiencyis high, the multi-stage continuous stepless speed change can be achieved by using a motor generator with less power, thereby reducing the volume of the motor generator, so that the transmission structure is more compact.

Description

technical field [0001] The invention relates to the field of transmission equipment, in particular to a continuously variable transmission for a hybrid tractor. Background technique [0002] As an important agricultural machinery, tractors have diverse and complex operating projects and harsh and changeable operating environments. The traditional tractor electrical power system operates with poor engine operating points and cannot make full use of engine power, resulting in serious energy waste and exhaust emissions. The hybrid electric power system adds an electric motor, which can optimize the working area of ​​the engine and improve energy utilization efficiency. The hybrid hybrid electric power system combines the advantages of series and parallel hybrid electric power systems. At the same time, the hybrid hybrid tractor abandons the shortcomings of traditional tractors and continues the advantages of traditional tractors. It is an effective way to achieve energy saving ...

Claims

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Application Information

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IPC IPC(8): B60K6/365B60K6/38
CPCB60K6/365B60K6/38
Inventor 张明柱黄思源王歩祯王界中许家俊柴蓉李光耀
Owner HENAN UNIV OF SCI & TECH
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