Analysis of several reasons of track roller wear by track roller manufacturers

The walking mechanism of crawler bulldozer bears all the weight of bulldozer and the driving function of bulldozer. The main damage form is wear, which is mainly manifested in the following contact parts: the outer surface of the driving wheel teeth and the track pin sleeve; the roller track surface of the guide wheel and the track link; the roller track surface of the roller roller roller of the roller and the track link; the roller track surface of the carrier wheel and the track link;

1、 Wear of track            

In the walking mechanism of the dry track (relative to the lubricated track and the sealed track), the track is not lubricated, which causes the wear between the track pin and the pin sleeve due to the relative movement during the working process. The wear between the pin and the pin sleeve in the track is inevitable and normal, but this kind of wear will make the pitch of the track extend and make the track too large. If this kind of wear continues, the track will move laterally, which will cause the wear of guide wheel, roller, carrier sprocket, driving gear and other parts, and at the same time, the wear of track pin and sleeve will be more severe.            

The wear of the track is also manifested in the reduction of the track thorn height due to the contact between the track shoe and the ground, and the reduction of the track link height due to the contact between the track roller surface of the track link and the guide wheel, carrier sprocket and roller. When the track shoes are worn seriously, the tractor traction will be lost.      

2、 Wear of idler            

The wear of the guide wheel is caused by the raceway surface of the contact chain rail joint, while the wear of the convex width of the guide wheel body is caused by the side contact with the chain rail joint. It is shown as follows: the reduction of the convex width of the idler body; the reduction of the diameter of the raceway surface of the idler body; the reduction of the diameter of the idler body;            

3、 Drive wheel wear            

Another wear pattern of the drive wheel teeth is top wear. Top wear occurs when the track and drive wheel teeth are filled with viscous material and the meshing relationship between the drive wheel teeth and the track pin sleeve is changed. When the bulldozer moves forward, it will mark the vertex on the back of the teeth on the drive side of the driving wheel and the side of the pin sleeve.           

 4、 Wear of carrier sprocket            

The wear of the carrier sprocket is caused by contacting the raceway surface of the chain link. The results show that: the width of carrier sprocket flange decreases; the outer diameter of carrier sprocket raceway surface decreases; the outer diameter of carrier sprocket flange decreases.            

5、 Wear of roller            

The wear of the roller is the same as that of the carrier wheel and guide wheel, which is also caused by contacting the raceway surface of the chain link. The specific performance is: the reduction of the outer flange diameter; the reduction of the raceway surface diameter; the reduction of the inner flange diameter; the reduction of the inner flange width; the reduction of the outer flange width.            

In view of the wear of the crawler traveling mechanism, the following measures can be taken:            

1.If the bulldozer traveling mechanism is obviously worn in the early stage, the operation shall be stopped immediately, and the coincidence degree between the center of the guide wheel, carrier sprocket, supporting wheel, driving wheel and the longitudinal center line of the traveling frame shall be checked;           

2.If the track track link length becomes longer due to wear, reverse the track link to remedy or replace it with a new one.