GengXiaoGuang

This paper gives the definition of the rock drilling jumbo for tunnel and describes China's manufacturers of rock drilling jumbos for tunnel and models of their products. The rock drilling jumbos are divided into 2 classes herein: jumbos with the usage report and jumbos without the usage report.

The dwelled on the definition of the drilling rig and classification of the DTH drilling rigs.It also introduced some domestic DTH drilling rig makers as well as major models and specifications of their product,and pointed out developmental directions and other 5 leading technologies of the DTH

The paper outlines the development of furnace-tapping hydaulic rock drills in china , and lists names of 11 companies making furnace-tapping hydraulic rock drills. In addition, it discribes the models,features, specifications and appearances of hydraulic rock drills from respective makers.

The paper looked hark on the historical couise of research and development of hydraulic rock drills in China and pointed that current situation of hydraulic rock drills was less optimal in China. It also listed models of hydraulic rock drills and manufactures producing them in China and collected

The paper analyzes developmental trends of hydraulic surface tophammer drill rigs home and abroad and proposes the classification of this kind of products. Based on the latest data, it compiles makers and models of the hydraulic surface tophammer drill rigs in China, collects specifications of the