Abnormal wear of small concrete mixer tires often exists. Today, Xiaobian summarized several common wear conditions and solutions, hoping to help the majority of mixer users.
Spot grinding the tire
Each time you turn the tire to see if it stops at the same position, the dynamic balance of the vehicle is wrong, which may be due to the large difference in the wall thickness of the brake drum. Then remove the dust disc and check whether the inner ring of the brake drum is out of round (at this time, the out of round shall not be greater than 0.5mm). If it is not round, remove the tire, fix the brake drum and check the inner ring runout.
If there is a large difference between the two times, it is a steel ring problem, and the steel ring should be replaced. If the difference is not great, replace the brake drum or boring drum. If no problem is found in the above inspection, check the suspension system for any problem. When the vehicle is normally loaded, the suspension balance arm shall be basically horizontal.
Due to different mixer heights, the suspension system does not match the main vehicle, the axle load is uneven, and the axle with small braking force is easy to lock. Because the brake drum is a little out of round during use, the probability of locking at a certain point is relatively high, resulting in fixed-point wear. In this case, you should check and adjust with the vehicle factory.
It refers to wavy wear of shoulder pattern. The reason is that when the vehicle is driving, the forward direction and driving direction of the tire have a certain included angle with the driving direction of the vehicle. If the tire wants to maintain the same direction as the vehicle driving direction, it needs to constantly correct the direction.
If this problem occurs on the front axle of the mixer, it means that the two ends of the axle and the midpoint of the traction pin do not form an isosceles triangle, that is, the axis of the mixer is not perpendicular to the axis of the axle; If the front axle is normal and the rear axle is abnormal, that is to say, the wheelbase of the rear axle and the front axle is not equal, and it needs to be readjusted to within 2mm.
During inspection, the small concrete mixer shall be stopped on a relatively flat site, and the vehicle shall be kept stable. Check whether the U-bolts are loose and whether the rubber sleeve of the pull rod is damaged. If the vehicle flicks its tail during driving, the installation position of the traction pin may not be on the axis of the mixer, so it is necessary to go to the vehicle factory for inspection and adjustment.
In addition, if both sides of the tire are seriously damaged, it means that the axle is not fixed well, that is, the rubber sleeve of the pull rod is worn or the U-bolt is loose. When the vehicle turns left or right, both sides of the tire will be grounded respectively. In addition, the bearing clearance is too large, this kind of wear will also occur.
You may have a general understanding of the wear of mixer tires. In fact, the vehicle is often checked during normal use, and problems found are solved in time. Many delays in operation time can be avoided. For more information, please visit our website www.zishangliaojiaobanji Cn!