HST hydraulic mechanical variable-speed drive axle for agricultural harvesting machine

Abstract

The invention relates to an HST hydraulic mechanical variable-speed drive axle for agricultural harvesting machine. The HST hydraulic mechanical variable-speed drive axle comprises a gearbox, a bridge welding beam, a left reduction assembly and a right reduction assembly. A differential assembly connected with a left half shaft and a right half shaft is arranged in the gearbox, and the tail end of the left half shaft and the tail end of the right half shaft are sequentially connected with a transition shaft, a brake disc, a brake caliper assembly and an edge reduction assembly. The edge reduction assembly comprises an edge reduction flange shaft, an edge reduction input shaft and a tail end transmission large gear. An input shaft, a main shaft, a middle shaft and an oil supporting disc are arranged in the gearbox, and an HST device and a brake shaft are arranged on two sides of the gearbox. According to the HST hydraulic mechanical variable-speed drive axle for the agricultural harvesting machine, gear shifting is controlled through one rod, so that the walking efficiency is improved, the performance is reliable, the cost performance is high, and the multi-aspect requirements of agricultural machinery households are met.

Description

technical field [0001] The invention relates to the technical field of travel transmissions for motor vehicles, in particular to an HST hydraulic mechanical transmission drive axle for agricultural harvesting machinery. Background technique [0002] The existing agricultural harvesting mechanical drive axles in the domestic market are mainly divided into mechanical clutch assembly transaxles, single-motor hydrostatic hydraulic transaxles, and HMT hydraulic stepless variable speed drive axles. When the mechanical clutch assembly transaxle is matched with the harvester, the gearbox often has the phenomenon of difficulty in gearing, walking weakness, and frequent replacement of the clutch assembly; when the harvester is matched with the single-motor hydrostatic transaxle, although the speed change The box often has problems such as difficulty in gear shifting, weak walking and frequent replacement of the clutch assembly. However, with pure hydrostatic transmission, the hydrauli...

AI Technical Summary

Problems solved by technology

When the mechanical clutch assembly transaxle is matched with the harvester, the gearbox often has the phenomenon of difficulty in gearing, walking weakness, and frequent replacement of the clutch assembly; when the harvester is matched with the single-motor hydrostatic transaxle, although the speed change The box often has problems such as difficulty in gear shifting, weak walking and frequent replacement of the clutch assembly. However, with pure hydrostatic transmission, the hydraulic system bears a large load for a long time, and the entire circuit will generate a lot of heat, which will increase the temperature of the hydraulic oil. Various failures will inevitably occur; when the HMT hydraulic continuously variable transmission drive axle is matched with the harvester, it can realize the mechanical stepless speed change and improve the walking efficiency of the machine, but the price of the whole machine is too high, and the maintenance cost in the later period is also very high. The fuel consumption is high, and the enthusiasm of agricultural machinery users is not high

Images