The working principle of the guide wheel of the crawler crane!
Release time：
Dec 03,2024
The bimetallic sleeve sliding bearings of the guide wheel have different axial degrees exceeding the tolerance, causing vibration and impact during track walking.
The working principle of the guide wheel of a crawler crane is as follows: use a butter gun to inject butter into the butter cylinder through the butter nozzle, causing the piston to extend outward and push the tension spring, causing the guide wheel to move left to tension the crawler. The tension spring has an appropriate stroke, and when the tension force is too large, the spring is compressed to provide a buffering effect; After the excessive tension disappears, the compressed spring pushes the guide wheel back to its original position, which can ensure sliding along the track frame to change the wheelbase, ensure the disassembly and assembly of the track, reduce the impact during walking, and avoid derailment of the track chain.
The reason for the damage of the guide wheel of the crawler crane
1. The bimetallic sleeve sliding bearings of the guide wheel have different axial degrees exceeding the tolerance, causing vibration and impact during track walking. Once the geometric dimensions exceed the tolerance, the clearance between the guide wheel axle and the shaft sleeve will be too small or no clearance, and the lubricating oil film thickness will be insufficient or even no lubricating oil film.
2. The surface roughness of the guide wheel axle is poor. There are many metal ridges on the surface of the shaft, which damage the integrity and continuity of the lubricating oil film between the shaft and the sliding bearing. During operation, a large amount of metal debris is generated in the lubricating oil, which increases the surface roughness of the shaft and bearings, deteriorates the lubrication state, and causes severe wear on the guide wheel shaft and sliding bearings.
3. There are defects in the original structure. Lubricating oil is injected from the screw plug hole at the end of the guide wheel shaft, and gradually fills the entire cavity. In practical operation, if there is no tool for oil injection, the lubricating oil is difficult to pass through the winding cavity inside the guide wheel under its own gravity, and the gas inside the cavity is not discharged smoothly, making it difficult to fill the lubricating oil. The original machine cavity has too little oil filling space, resulting in a serious shortage of lubricating oil.
4. The lubricating oil in the gap between the guide wheel axle and the shaft sleeve cannot take away the heat generated by the bearing operation due to the lack of oil passage, resulting in an increase in the working temperature of the bearing, a decrease in the viscosity of the lubricating oil, and a decrease in the thickness of the lubricating oil film.
Contact Us
Whatsapp：+86-15906080001
Tel：+86-15906080001
E-mail ：yixingmachinery@gmail.com
Address ：145 Xiantang South Road, Changtai Street, Licheng District, Quanzhou City, Fujian Province
Copyright © Quanzhou Yixing Machinery Manufacturing Co., Ltd. Powered by www.300.cn SEO