The existing technology has been used by several products in my country and various sizes, models and specifications. The roadheader is similar to the milling machine and mounted on the special vehicle chassis. It is a full-vehicle machine and equipment that integrates basic functions such as cutting, transportation, walking, and manipulation. It is mainly used for cutting any cross-section of mine rock, Coal or semi-coal rock coal alley.

The principle of the hydraulic milling machine and the roadheader is: the hydraulic motor drives the hydraulic milling machine to rotate according to the transmission mechanism, so that the picks assembled on the top of the milling head carry out drilling work on the touching raw material, so that the material is separated, so that the Digging. In the roadheader, there is also a selection of motor-driven milling heads. The hydraulic milling machines and roadheaders of the prior art are suitable for low and medium hardness rock layers and minerals, etc. When encountering medium and high hardness rock layers, the milling will not move or the efficiency will be low, and the cutting teeth will be worn out, so the available places will suffer. Very constraining.

There are many working conditions for hydraulic milling machines. Under different working conditions, hydraulic milling machines have different stress standards. For example, in the soil layer grooving project, the hydraulic milling and excavating machine can completely dive into the soil layer work, and all the hydraulic milling and excavating heads participate in the work of the hydraulic milling and excavating machine. When milling low to medium hardness raw materials, the stress situation of each hydraulic milling machine is not bad.

Even if the stress of each hydraulic milling machine is very different, compared with the designed working ability of the hydraulic milling machine, such uneven stress or the stress of some hydraulic milling machines is not easy to cause very serious problems in the work of the hydraulic milling machine. big hazard. However, in the case of hard rock milling, due to the high hardness of the rock, the hydraulic milling machine has the worst stress. The hydraulic milling machine can only mill the rock at a small drilling rate. In the case of horizontal milling, it can only be carried out with a small milling thickness. Level milling. In this kind of operating state, not all the hydraulic milling heads of the arc segment participate in the work, especially in the case of horizontal milling, only the hydraulic milling machine at the intersection of the straight line segment and the arc segment participates in the milling work.

The hydraulic milling machine can reach 25~40m3/h in low and medium hardness rocks such as weathered rock (varies with the relative density and crushing degree of the rock). The hydraulic milling machine can also mill concrete with no or a little construction steel. The use of milling machines and small and medium-sized milling machines on a 20-ton excavator can easily mill concrete with a diameter of less than 30mm construction steel bars.

Hydraulic milling and excavating machine can replace blasting construction to prevent rock compressive strength reduction, structural loosening and partial cracking caused by blasting vibration. It is beneficial to maintain the original self-supporting strength of the rock, and it is not easy to cause large-scale collapse; in the construction of tunnel engineering, the hydraulic milling machine can replace the very expensive mechanical equipment such as tunnel boring machine and boring machine, which greatly reduces the construction cost; The excavator is very reasonable in the following rock mining operations: low-hardness rock; regolith structural rock; high-hardness but structurally layered milling volume of 80-120 tons (depending on rock hardness); hydraulic milling machine can replace excavator construction, Protect the environment.