Classification of rotary drilling machines?

Answer:

Classification of rotary drilling machines:Generally speaking, rotary drilling machines are divided into large, medium and small categories.The principle of choosing a rotary drilling rig should be to meet the current major engineering requirements of users and to take into account the possible engineering requirements in the future. According to the main working parameters of rotary drilling rig: torque, engine power, drilling diameter, drilling depth and the quality of drilling rig, rotary drilling machine can be divided into three types: torque 100kN = M. The power of the engine is 170kW, the drilling diameter is 0.5 to 1m, the drilling depth is about 40m, and the quality of the drilling machine is about 40t. This kind of drilling machine becomes a small rotary drilling machine, which is called a minicomputer for short.1, minicomputer application market positioning:(1) all kinds of slope pile blocks;(2) partial bearing structure pile of building;(3) urban transformation of municipal projects under various 1m piles;(4) piles for other purposes. Minicomputer market workload coverage rate of more than 30%.2: 180kN - m, midrange torque, engine power is 200kW, the hole diameter of 0.8 ~ 1.8m, drilling depth of about 60m, the quality of the drilling machine 65t.

The general control of the rotary drilling machine adopts hydraulic pilot control and load sensing. It has the advantages of easy operation and comfortable operation.

Rotary drilling machine is a construction machine suitable for drilling operations in construction foundation engineering. Mainly suitable for sand, clay, silty soil layer construction of rotary drilling rig, widely used in pile continuous wall, foundation reinforcement and other foundation infrastructure construction, the rated power of rotary drilling rig is 125 ~ 450kW, the power output torque of 120 ~ 400kN / m, the maximum pore diameter up to 1.5 ~ 4m, the maximum hole depth is 60 ~ 90m, can meet the requirements of all kinds of large-scale infrastructure construction.

Application of rotary drilling rig market positioning midrange:(1) the traffic facilities of various bridge freeway and railway bridge;(2) large structure and wharf bearing structure pile;(3) the city viaduct bridge;(4) other applicable piles. Midrange market coverage rate reached more than 90% of the workload.3. Mainframe: torque 240kN = m, engine power 300kW, drilling diameter 1 ~ 2.5m, drilling depth 80m. The quality of the rig is over 100t.Market positioning of mainframe applications:(1) all kinds of super large bridge of highway and railway bridge;(2) special structure of other large building, bearing foundation pile. Mainframe market workload, coverage of more than 10%.