How is the large supporting wheel of high-quality paver forged?Azerbaijan Excavator sprocket
The structure of supporting wheel is mainly divided into wheel body, supporting wheel shaft, shaft sleeve, sealing ring and end cover. High-quality roller mainly depends on its steel performance. The roller body material is generally 50MN and 40Mn2 (Mn: the pronoun of fierce element). The manufacturing process is divided into casting or forging, machining, and then heat treatment. After quenching, the hardness of the wheel surface reaches HRC45~52 to increase the wear resistance of the wheel surface. The machining accuracy of the supporting wheel is required to be high, and generally, it needs a numerical control machine tool for machining to meet the requirements. The material is 40Mn2, and the hardness reaches about HRC42.
What should be paid attention to in the operation of paver roller?Azerbaijan Excavator sprocket
1, in the process of paver operation, a driving distance should not be too long, the speed should not be too fast; During the long and fast running of the roller, high temperature will be generated, and its lubricating oil will leak out due to dilution, resulting in the damage of the roller. Once a roller is found to be damaged, it should be replaced in time, otherwise its adjacent roller will be accelerated due to excessive stress. When replacing the roller, the wear condition should be considered. If the wear degree is small, it can be replaced singly; otherwise, it should be completely replaced, so as not to accelerate the wear of the newly replaced roller.
2. Because the screed on the paver is too heavy, the center of gravity of the whole machine is tilted backward, so the rear roller of the paver is the most stressed in the working process, and it is easy to be damaged. After the damage, the paver will fall together, and the screed will be higher and lower, resulting in the wavy paving road surface, which directly affects the smoothness of the road surface.Azerbaijan Excavator sprocket
What are the problems of paver rollers?
1. The wheel body is worn. The reason for this situation is that the steel used is unqualified, or the hardness of data heat treatment is low and the wear resistance is lacking.
2. Oil leakage. The supporting axle is constantly rotating through the shaft sleeve, and the wheel body needs oiling to be smooth. However, if the sealing ring is not good, it is easy to cause oil leakage, so that the axle and the shaft sleeve are easily worn without smoothness, resulting in products that cannot be stopped.Azerbaijan Excavator sprocket
Post time: Jun-29-2022
