土石方挖掘作业是挖掘机最主要的作业工况。履带式挖掘机在完成这一功能方面无疑占据明显的优势,也正因如此,履带式挖掘机已成为本类产品中的一种主流型式。在进行挖掘等各种作业中,工程机械总要配合场地的转移和机器的移动、就位,所以也就必须配备行走装置,所以人们就很自然地将行走的功能扩展为既可慢速移动就位,又可远距离的行走乃至实现公路行驶,这或许就是从挖掘机诞生一开始,就出现轮式挖掘机的一种历史缘由。只是从以后的不断工程实践中,轮式挖掘 Earthwork excavation excavator is the most important operating conditions. Crawler excavators undoubtedly occupy significant advantages in accomplishing this function, and as such, crawler excavators have become a mainstream type in this category. In excavation and other operations, the construction machinery always needs to coordinate with the transfer of the site and the movement of the machine, so that the walking device must be equipped so that people naturally extend the function of walking to be able to move slowly In place, but also long-distance walking and even highway driving, perhaps from the beginning of the excavator was born, there is a historical reason wheeled excavators. Just from the continuous engineering practice in the future, wheeled excavation