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Automatic gear shifting system and method of agricultural machine transmission

A technology for automatic shifting and transmission, which is applied to fluid pressure actuating system components, mechanical equipment, components with teeth, etc. simple effect

Active Publication Date: 2020-07-17
SHAANXI FAST AUTO DRIVE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing agricultural machinery transmission has many gears, resulting in complex structure of the transmission and high labor intensity of frequent shifting, the present invention provides an automatic shifting system and shifting method of the agricultural machinery transmission, which makes full use of the hydraulic pressure on the agricultural machinery transmission The system realizes the multi-gear shift operation control of the main transmission, reduces labor intensity and the system is simple, reliable and easy to modularize

Method used

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  • Automatic gear shifting system and method of agricultural machine transmission
  • Automatic gear shifting system and method of agricultural machine transmission
  • Automatic gear shifting system and method of agricultural machine transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The automatic shifting system of the agricultural machinery transmission includes a gear-engaging actuator Y1 and a gear-engaging actuator Y2.

[0066] refer to figure 2 , when the first gear is engaged, the solenoid valve 7 of the gear actuator Y1 is powered on, the oil inlet of the solenoid valve is connected to the oil outlet, the hydraulic oil is adjusted to the set pressure value through the pressure reducing valve, and enters The oil inlet port of the electromagnetic valve enters the actuator 8 connected thereto through the oil outlet port, and the actuator 8 completes the gear-shifting operation.

[0067] When it is necessary to exit the gear, the solenoid valve is de-energized, the oil inlet of the solenoid valve is connected to the oil discharge port, the actuator 8 is connected through the solenoid valve 7 and the oil pan 6, and the hydraulic pressure in the closed oil chamber inside the actuator disappears. Under the function of the return device of the tra...

Embodiment 2

[0071] The automatic shifting system of the agricultural machine transmission includes a gear-engaging actuator Y1, a gear-engaging actuator Y2 and a gear-selecting actuator X1.

[0072] refer to image 3 , The working principle of the shifting gear of 1st gear and 2nd gear is the same as that of embodiment 1, and the gear selection actuator X1 is de-energized during the gearing process of 1st gear and 2nd gear.

[0073] When the third gear is engaged, the gear selection actuator X1 and the gear engagement actuator Y1 are powered on in turn, and the gear engagement actuator Y2 is powered off.

[0074] First, the gear selection actuator X1 is powered on, the oil inlet of the corresponding solenoid valve is connected to the oil outlet, and the hydraulic oil enters the actuator 8 connected to it through the solenoid valve, and the actuator 8 controls the movement or rotation of the shift fork shaft of the transmission to complete Select gear.

[0075] Then, the gear-engaging ac...

Embodiment 3

[0080] The automatic shifting system of the agricultural machine transmission includes a gear-engaging actuator Y1, a gear-engaging actuator Y2 and a gear-selecting actuator X1.

[0081] There are two control logics for the 4th gear, as follows:

[0082] refer to Figure 4 , when the gear-engaging actuator Y1 is powered on, the gear-engaging actuator Y2 and the gear-selecting actuator X1 are de-energized, and the transmission is engaged in 1st gear;

[0083] When the gear-engaging actuator Y2 is powered on, the gear-engaging actuator Y1 and the gear-selecting actuator X1 are de-energized, and the transmission is engaged in the second gear;

[0084] When the gear selecting actuator X1 and the gear engaging actuator Y1 are powered on in sequence, the transmission is engaged in the third gear.

[0085] When the gear selecting actuator X1 and the gear engaging actuator Y2 are powered on sequentially, the transmission is engaged in the fourth gear, and its working principle is th...

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Abstract

The invention discloses an automatic gear shifting system and method of an agricultural machine transmission. The automatic gear shifting system comprises an oil pump, multiple gear engaging executingunits and at least one gear selecting executing unit. The gear engaging executing unit and the gear selecting executing unit each comprise a solenoid valve and an actuator. The multiple gear engagingexecuting units and at least one gear selecting executing unit are combined for use, and therefore the transmission can be engaged in different gears; and by means of the original oil pump of the transmission, the solenoid valve controls the actuators to carry out gear selecting and gear engaging operation, the structure of the agricultural machine transmission is simplified, gear engagement is hydraulically controlled, and the labor intensity of frequent gear engagement of a driver is reduced.

Description

technical field [0001] The invention relates to the technical field of transmission gear shifting, in particular to an automatic gear shifting system and a gear shifting method of an agricultural machine transmission. Background technique [0002] During the operation of agricultural machinery, due to the very large driving resistance, whether it is a manual shift transmission or a power shift transmission, it usually requires more than a dozen gears, and some transmissions even have dozens of gears. In order to achieve so many gears , the transmission is composed of a main transmission and an auxiliary transmission, or a power shift transmission and a main transmission, or a continuously variable transmission and a main transmission. The total number of gears can be obtained by multiplying their gear numbers. The main transmission is generally designed with 4 gears, but according to the number of gears actually needed, there are also 2nd, 3rd, 5th and 6th gears. Carry out ...

Claims

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Application Information

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IPC IPC(8): F16H61/04F16H61/30F16H61/00F16H59/08F15B21/041
CPCF16H61/04F16H61/30F16H61/0009F16H59/08F15B21/041F16H2061/308
Inventor 邱辉鹏严鉴铂刘义聂幸福
Owner SHAANXI FAST AUTO DRIVE GROUP CO LTD
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