Type ZJ30 High Quality mechanical drilling rig Land Oil Rigs Used for Oilfield Exploration Features ◆ The mechanical drilling rig is diesel-driven. The chain box realizes power combination to drive the winch and mud pump. The rotary table chain box is driven via the platform cardan shaft to rotate the rotary table. ◆ The power system adopts a diesel engine plus hydraulic coupling unit with modular design. Each module is connected by cardan shafts, enabling convenient