Digging ditches with excavators seems very simple, but in fact, it also requires a high level of technology to dig ditches well. There are two basic requirements for trenching, one is "straight" and the other is "smooth".
"Straight" means that the route of the ditch is excavated accurately according to the specified requirements. Generally, the construction site will draw the route of the ditch on the ground with white lime. If there is no line, there are only a few points. Then you need to use the track to walk between several points first, and the track marks left can play the role of lime line, that is, be careful not to press off the points. The center of the excavator is aligned with the lime line, and the middle bucket tooth of the bucket is aligned with the lime line for excavation, so that there will be no problem with the route of the ditch.
"Smooth" means that the bottom of the ditch shall be smooth and the slope shall be controlled as required. Many drivers cannot see the height of the bottom of the ditch, so they should get off more cars to observe or ask the construction workers to measure with instruments. When the trench reaches a certain depth, slopes should be excavated on both sides of the trench to prevent collapse. This slope edge is usually cut with side cutters on both sides of the bucket.
There is a special case that a ditch must be close to a building. If the excavator is close to the building, there is no range of tail rotation. When rotating, the tail of the excavator is easy to hit the building. Further away, there will be an angle between the excavation direction of the excavator bucket and the direction of the ditch. In fact, many times, due to the site, there is no space for the rotation range at the rear of the excavator, so many operations cannot be completed by the excavator. In this case, if the trench to be excavated is not very deep when excavating a trench near a building. The excavator can be placed at the position closest to the building and larger than the tail rotation range. Although there is an angle between the digging direction of the bucket and the direction of the ditch. However, when excavating a trench, only one side line of the trench can be used to locate the direction of the trench, and then the width of the trench can be controlled as much as possible.
The method to determine the distance between the tail and the building during rotation is to extend the head out of the cab and look at the left tail of the excavator. The excavator rotates slowly from left to right. You can directly see the distance between the left tail of the excavator and the building. After confirming that there will be no collision, it means that the right tail that cannot be seen when turning from right to left will not collide with the building.
