Types of rotary drilling rig
(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. Torque 240kN = m, engine power 300kW, drilling diameter 1 ~ 2.5m, drilling depth 80m. The quality of the rig is over 100t.
(1) all kinds of slope pile blocks;(2) partial bearing structure pile of building;(3) all kinds of piles with diameters less than 1m are used in urban reconstruction projects;(4) piles for other purposes. Minicomputer market workload coverage rate of more than 30%. Torque 180kN = m, engine power 200kW, drilling diameter 0.8 to 1.8m, drilling depth of about 60m, drilling machine quality of about 65T.
The principle of choosing a rotary drilling rig should be to meet the major engineering requirements of the user and take into account the possible engineering requirements. Rotary drilling rig can be divided into three types according to its main working parameters: torque, engine power, drilling diameter, drilling depth and the quality of drilling rig:Torque 100kN = M. The power of the motor is 170kW, the drilling hole diameter is 0.5 to 1m, the drilling depth is about 40m, and the quality of the drilling machine is about 40T. Application market positioning of minicomputer:
(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%.
