Combined harvester bridge driving axle structure and bridge device

Abstract

The invention discloses a combined harvester bridge driving axle structure, and belongs to the technical field of combined harvesters. The structure comprises a bridge driving axle rotationally installed on an axle shell of a combined harvester. The bridge driving axle is located in the axle shell and is provided with a plurality of bridge driving axle chain wheels. A bridge inner support is fixed to the position, close to the bridge driving shaft, in the bridge shell. The bridge inner support is fixedly provided with a plurality of grass cutters used for preventing grass from being wound on the bridge driving shaft. An opening is formed in the middle of each grass cutter. The openings correspond to the bridge driving axle chain wheels one to one. The invention further provides a bridge device of the combined harvester. The structure and the device prevent the grass from being wound on the bridge driving shaft, a user does not need to stop the harvester and clean the harvester frequently, work efficiency is improved, and the situation that the harvester is not cleaned in time and accordingly machine parts are abraded or damaged in the early stage is avoided.

Description

technical field [0001] The invention belongs to the technical field of combine harvesters, and in particular relates to a drive shaft structure for a bridge crossing of a combine harvester and a bridge crossing device. Background technique [0002] The bridge crossing device is an important conveying part of the combine harvester connecting the header and the threshing separation device. At present, the combine harvester mostly adopts the chain wheel drive chain rake structure, and the crops harvested by the header are transported to the threshing separation device through the chain rake. The driving shaft of the bridge is not only the power input part of the bridge, but also the part directly connected with the threshing and separating device. When the crops enter the threshing and separating device from the bridge, due to the transformation of space, their speed and direction of movement change sharply. The driving shaft of the bridge is at the junction point of the sharp ...

AI Technical Summary

Problems solved by technology

However, when wet crops are harvested, the crops are more flexible and easily enter the gap between the cylindrical anti-winding ring 120 and the bridge drive shaft sprocket 203, causing entanglement of grass, and more and more entanglement of grass will cause blockage

The user has to stop for cleaning, which affects the working efficiency

If it is not cleaned in time, it will cause early wear or damage to machine parts

[0007] In addition, the bridge drive shaft 201 and the bridge drive shaft sprocket 203 are connected by a key 202, the keyway is likely to cause stress concentration defects, and the strength will be weakened; and once the key connection structure is rusted, disassembly is difficult and maintenance is extremely inconvenient

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