Screw shaft, screw distributor and paver

Abstract

The invention discloses a spiral shaft, a spiral material distributor and a spreading machine of the spiral material distributor. The spiral shaft comprises a main shaft and an edge section connection shaft, wherein one end of the main shaft is a driving end, and the other end of the main shaft is a tail end; one end, which faces the main shaft, of the edge section connection shaft is a connection end; the connection end of the edge section connection shaft is provided with a shaft sleeve; one end of the shaft sleeve is fixedly connected with the edge section connection shaft, and the other end of the shaft sleeve is a tail end; the tail end of the main shaft is frustum-shaped and is inserted into an inner hole of the shaft sleeve; an annular gap is formed between the tail end of the main shaft and the shaft sleeve; the tail end of the main shaft is sleeved with an anti-abrasion supporting ring which is positioned at the tail end of the shaft sleeve and is matched with the inner wall of the inner hole in a pressing manner. According to the spiral shaft, the distortion shearing stress of the tail end of the main shaft is alleviated by changing the structures of the main shaft and the edge section connection shaft and a connection mode between the main shaft and the edge section connection shaft, so that the performance of the main shaft for resisting hydraulic impact is improved, the possibility that the main shaft is broken due to fatigue is reduced, the service life of the spiral shaft is prolonged, and the service lives of the spiral material distributor and the spreading machine are prolonged.

Description

technical field [0001] The invention relates to a screw shaft, a screw distributor and a paver thereof, belonging to the field of road construction machinery. Background technique [0002] The screw distributor is an important part of the paver, and its power consumption accounts for about half of the total power of the engine. The left and right parts of the spiral distributor are horizontally placed behind the main machine of the paver. When the paver is moving, the material is diverted and conveyed to both sides, and it is stuffed at the front of the screed for compaction and ironing by the screed. The working principle of the screw distributor is: the screw shaft with the helical blade rotates in the trough surrounded by the screed and the baffle plate, so that the material entering the trough is affected by gravity, blade friction and trough friction. , does not rotate with the screw shaft, but moves along the material trough to the conveying direction, and continuousl...

AI Technical Summary

Problems solved by technology

Although the end 103 of the main shaft 101 and the shaft sleeve 108 of the side segment connecting shaft 105 are clearance fit, the gap is very small, so it is difficult to avoid the repeated repeated multiple times of the shaft sleeve 108 of the side segment connecting shaft 105 to the end 103 of the main shaft 101. Under the action of alternating stress, the strain of repeated alternating stress cannot be offset by the plastic deformation of the main shaft 101 itself, which eventually leads to the breakage of the end 103 of the main shaft 101, thereby reducing the service life of the screw distributor

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