The slag loader commonly used in tunnels and tunnels is also called rock loader, which is now replaced by excavating loader (bucket slag loader). Requirements of small size, durable, easy to operate, easy to walk, high production efficiency, continuous non-intermittent operation, but also to safety and environmental protection. Slag loading machine (rock loading machine) the way of the wheel type; Rail type; Crawler type three kinds of walking mode. According to the type of the arm of the slag loader can be divided into: bucket type; Crab claw type; Claw type; Four kinds of digging bucket. The first three are gradually replaced by the bucket type in the construction practice. The intermittent can not be continuous, reciprocating is not flexible, the working ability is low, the dust caused by insecurity is large, the operation is not human, the rock degree is small, the slope is limited and other defects.
The tyred slag loader is only suitable for small models working in 1.7 meters space, and can only work in the roadway. Its disadvantage is that it is easy to slip and sink in the water and soil surrounding rock and hard surrounding rock tunnel roadway, and it is easy to cut the tire, with low efficiency and small feeding strength. It has the advantage of loading slag and ore in a very small space, the price is the cheapest but more cost-effective than manual work. Rail type slag raking machine is suitable for supporting rail transport more saving, but its working scope is limited, the rack and lay rail is more troublesome and can not work on the slope; Its advantage is moderate price, high efficiency, eating material strength is larger, raking material is large and many. The crawler slag loader combines all the advantages and disadvantages of the above, but the early investment is more expensive, but the benefit is greatly doubled, and the cost of the construction period is reduced to the lowest point of the existing.