The JDL-300 series drilling rig is a water well drilling equipment that integrates water drilling and gas drilling functions independently developed by the company (national invention patent: ZL201510479602.4). It adopts AMT manual automatic gearbox, 10 forward rotation, 2 stage Reversing, forward and reverse switching is sensitive and convenient, the transmission efficiency is doubled compared to hydraulic transmission, and the power consumption is reduced by 35%, which is more efficient and energy-saving. It solves the difficult problems of air DTH hammer drilling in soil layers and low construction efficiency of rotary drilling rigs for hard rock layers, gravel and pebble layers.

　　Main features of drilling rig:

　　1. The drill speed can reach 14-650r/min, and the maximum output torque is 13400N.m.

　　2. The drilling rig adopts a long-stroke double-speed mechanism, a mechanical power head, and a power head stroke of 3400MM, which is used to improve drilling efficiency and reduce the occurrence of drill blocking and burning accidents.

　　3. The drilling rig adopts double oil pumps for oil supply. A single pump is used when drilling, and two pumps are used for confluence when lifting and lowering the drill. The power loss is small and the auxiliary time is short.

　　4. The crawler chassis is adopted, and the outrigger cylinder stroke is 1.5m, which can be loaded automatically, which is convenient for relocation and transportation.

　　5. The drilling rig is in machinery. Some functional interfaces are reserved in the hydraulic system, which can be expanded according to the technological requirements of different users.