Drive Shaft Structure and Bridge Crossing Device of Combine Harvester

Abstract

The invention discloses a bridge crossing driving shaft structure of a combine harvester, which belongs to the technical field of combine harvesters, and comprises a bridge crossing driving shaft, the bridge crossing driving shaft is rotatably mounted on the bridge crossing housing of the combine harvester, and A plurality of bridge drive shaft sprockets are mounted on the bridge drive shaft inside the bridge housing, and a bridge inner support is fixedly installed in the bridge housing near the position of the bridge drive shaft. A number of grass cutters are fixedly installed on the inner support of the bridge to prevent the driving shaft of the bridge from being entangled with grass. An opening is arranged at the middle position of the grass cutter, and the opening is aligned with the sprocket of the driving shaft of the bridge. One to one correspondence. The invention also discloses a bridge crossing device for a combine harvester. The invention avoids the weeding of the driving shaft of the bridge, and the user does not need to stop frequently for cleaning, which improves the working efficiency and avoids early wear or damage of machine parts caused by untimely cleaning.

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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