Crawler Bulldozer Running Wear Analysis and Countermeasures – bulldozers, maintenance, repair – construction machinery industry
Crawler Bulldozer Bearing the bulldozers moving bodies of all the weight, to carry out the functions of the bulldozers moving. The main damage to the form of wear, the damage form exposure concentrated in the following areas: the driving wheel gear and track the outer surface of pin sets: guide wheel and caterpillar track link section of raceway; supporting wheels and crawler track link section Raceway surface; care Chain wheel Crawler track link section with the roller surface; track sales and marketing kits interface; track plate and the ground, etc..
1. The wear track In the dry track (relative to the lubricating and sealing-type crawler tracks) and travel agencies, track no lubrication, resulting in the work created during the track between the pin and the pin sleeve wear due to relative motion. Track of sales and marketing suite is inevitable wear and tear is normal, but will track the pitch and wear elongation, so that track too. The wear situation continues, it will produce side tracked Mobile , Causing guide wheel, supporting wheels, asked sprocket, drive gear and other parts of the wear and tear, but also aggravated the track pin and sleeve wear.
Wear track by track plate also in contact with the ground Ershi reduced height of grouser track and track link section for track roller surface and the guide wheel, wheel care, supporting wheels touch the track chain caused rail section height will decrease. Track shoe wear will cause serious loss of traction bulldozers.
2. Driving wheel wear Driving wheel tooth root tooth wear often occurs, around the side, left side and the tooth top. When the bulldozers moving forward, track sales hold up gear sets, the wear occurs in the first side of the tooth; the other hand, when the bulldozers moving backwards, wear occurs after the tooth side. When the track is too loose, resulting in track deviation, the impact of track link section of the tooth will cause the driving wheel when the side of the side tooth wear.
Driving wheel wear another form of tooth wear top. Top of the wear track and the driving wheel in viscous material filling the tooth was, driving wheel gear teeth meshing with the track pin sets the relationship is changed. When the bulldozers moving forward, they will drive in the driving wheel side of the teeth off the back of the set of vertices and the side draw the prints.
3. Idler wear Guide wheel track link wear is due to contact with raceway produce section, but the width of guide wheel wear body is raised and the track link section as the side contacts generated. As follows: to guide the reduction of the width of round convex body; guide wheel body raceway diameter decreases; to guide the reduction of wheel diameter
4. Asked sprocket wear Care sprocket track link wear is due to contact with the raceway section arise. As follows: child care reduces the width of wheel flange; care sprocket raceway diameter decreases; care sprocket flange diameter decreases.
5. Rollers wear Rollers wear with care sprocket, guide wheel wear as well as access to track link section raceway generated. Specifically as follows: outer flange diameter decreases; raceway diameter decreases; bilateral decrease in flange diameter; bilateral reduction in flange width; outside the flange width reduction.
Crawler running gear for wear, can take the following measures:
(1) If the agency bulldozer apparent at an early stage of wear, should immediately stop operating, check the guide wheel, sprocket care, supporting wheels, driving wheel centers and walking frame longitudinal centerline of the coincidence degree;
(2) to extend the service life, can exchange places before and after the supporting wheels, but must remain single, bilateral supporting wheels moving shelves in the original position unchanged;
(3) travel agencies to use the various parts wear limit, the guide wheel, wheel care, supporting wheels, driving wheel gear, carry out thorns, track link section can be used to repair or replace surfacing;
(4) for caterpillar track link pitch of wear longer the case, can be taken to remedy or reverse the track link section of replacement of the track link section.
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