Multi-speed tractor transmission with mechanical reversing and load shifting

Abstract

A multi-gear tractor transmission with mechanical reversing and load gear shifting comprises a front transmission box and a rear transmission box, wherein a mechanical reversing device and a high-low load gear shifting device are arranged on the front transmission box; a main speed change device and an auxiliary speed change device are arranged on the rear transmission box; the mechanical reversing device, the high-low load gear shifting device, the main speed change device and the auxiliary speed change device are arrayed in sequence; one end of the mechanical reversing device is connected with an engine; one end of the auxiliary speed change device is connected with a rear axle of a tractor. Through such an arrangement form, the power of the engine of the tractor is transmitted to the rear axle of the tractor, a front axle of the tractor and a power output shaft; through the combination of the mechanical reversing device, the high-low load gear shifting device, the main speed change device and the auxiliary speed change device, 24 forward gears and 12 reverse gears are realized, many gears are arranged, and the operation adaptability is good; the mechanical reversing device is arranged on the front end of the main speed change device, the rotational inertia is relatively small during reversing, the synchronization time of a synchronizer is short, the gear shifting impact and the gear shifting force are small, and the conversion between the forward gear shifting and the reverse gear shifting is quicker.

Description

technical field [0001] The invention belongs to the field of tractors and relates to a multi-speed tractor transmission device with mechanical reversing and load shifting. Background technique [0002] At present, there are mainly two types of tractor transmission systems in China: one is mechanical gear shifting, which uses meshing sleeves or synchronizers to switch gears on the tractor. When shifting gears, the main clutch needs to be separated to cut off the power transmission of the tractor; Gear shifting (also known as power shifting) uses electronically controlled or hydraulically controlled wet clutches to switch gears. When shifting gears, the main clutch does not need to be separated, and the power transmission of the tractor is not interrupted. The mechanical shifting method is simple and reliable, and the manufacturing cost is low, but the labor intensity of the driver is relatively high during frequent operations. Most domestic tractors use this shifting method. ...

Images