TianXiang

The article compiles diameter data of 11 dual-control rock drills and 4 rear-control rock drills from Epiroc. The ratio range of stressed areas of the piston in return and power strokes is determined. Based on the analysis of ratio data, the article points out using the design variables based on 3-

This article collects the number of manufacturers and product models of domestic hydraulic rock drill products in 2023, and compares them with the overview in 2016. This article divides my country's hydraulic rock drill products into four types: airborne, outrigger, handheld and blast furnace

This paper covers durablity and performance parameters of RDX5 hydraulic rock drill from Sandvik,describes in brief the design improvements of components and parts of RDX5 rock drill compared with HLX5 rock drill,and outlines the design features of RDX5 rock drill.

The paper collects a total of 23 models of hydraulic rock drills from Sandvik, 14 models of which fall into H family and 9 models of which belongs to RD family. Main specifications of each models are listed. Models are made up of 3 parts, that is, prefix, number, and suffix.

The paper briefs the history and foundation course of the Epiroc, as well as the implications of Epiroc's logo. It focus on general information on hydraulic rock drills from Epiroc , their classification and statistics in recent years. The model of a hydraulic rock drills consists of 3 parts

The paper compiles information on several models of Doofor hydraulic drills from Finland and analyzes the designation and meanings of models of Doofor hydraulic drills. It also parses and reviews performance features,design concepts and structure characteristics, providing reference for users

Based on data on Internet and promoting materials from Montabert, the paper studies the structures and technical characteristics of hydraulic drifters from Montabert. It highlights the technical characteristics of the blank firing and brake structure, composite piston, shape of the progressive

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.