English Views: 437 Author: Site Editor Publish Time: 2021-12-20 Origin: Site
Excavators are heavy machinery equipment, whether they are purchased or rented are expensive. Therefore, we must do the preliminary work and understand the functions and shortcomings of various types of excavators.
According to different scales, excavators can be divided into large excavators, medium excavators and small excavators.
According to different ways of walking, excavators can be divided into bucket chain excavators and bucket wheel excavators.
According to different transmission modes, excavators can be divided into hydraulic tilt bucket excavators and mechanical excavators. Mechanical excavators are mainly used in some large mines.
According to the purpose, excavators can be divided into general excavators, mining excavators, marine excavators, special excavators and other different categories.
According to the bucket, the excavator can be divided into bucket shovel excavator, backhoe excavator, dragline excavator and grab shovel excavator. Front shovel excavators with bucket are mostly used to excavate materials above the surface, and backhoe excavators are mostly used to excavate materials below the surface.
1. Bucket backhoe excavator
The backhoe with bucket is the most common we've seen, backwards and downwards, forcibly cutting the soil. It can be used for excavation below the working surface. The basic operation methods include: trench end excavation, trench side excavation, straight line excavation, curve excavation, excavation at a certain angle, ultra-deep trench excavation, and trench slope excavation.
2. Shovel Excavator
The characteristic of the shovel action form of the shovel excavator is "forward and upward, forced cutting of soil". The front shovel has a large digging force and can excavate the soil above the stop surface. It is suitable for excavating dry foundation pits with a height greater than 2m, but up and down ramps must be set. The excavator ripper bucket of the front shovel is larger than the bucket of the backhoe of the same equivalent. It can excavate the first to third types of soil with a water content of not more than 27%, and it can cooperate with the dump truck to complete the entire excavation and transportation operation, and it can also excavate Large dry foundation pits and mounds, etc. The excavation method of the front shovel excavator is based on the relative position of the excavation route and the transport vehicle. There are two ways of excavating and unloading: forward digging, lateral unloading; forward digging, reverse unloading the soil.
3. Dragline excavator
Dragline shovel is also called cable shovel. The characteristics of its excavation are: "backward down, cut soil under its own weight". It is suitable for excavating Class I and Class II soil below the stop surface. When working, use inertia force to throw the bucket out. Digging farther, the digging radius and digging depth are larger, but it is not as flexible and accurate as a backhoe. It is especially suitable for excavating large and deep foundation pits or underwater excavation.
4. Grab shovel excavator
Grab bucket excavators are also called grab excavators. The characteristics of its excavation are: "straight up and down, cut soil under its own weight". It is suitable for excavating Class I and Class II soil below the stop surface, and is often used for excavating foundation pits and caissons in soft soil areas. It is especially suitable for digging deep and narrow foundation pits, dredging old channels and digging silt in water, or for loading loose materials such as gravel and slag. Excavation methods include trench side excavation and positioning excavation. If the grab tilting mud bucket is made into a bar shape, it can also be used for loading ore blocks, wood chips, wood, etc. in a wood storage yard.
