A single-arm rock drilling jumbo rig is used to drill holes in Ganyue Road, Chongqing, and then the rock stratum is split by hydraulic fracturing machine, and then removed by excavator. Large-diameter drilling increases the drilling tool loss of single-arm rock drilling jumbo.

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.

Brand :
Part No. : 86385242
Description : Membrane
Use in :

For development of large equipment，such as drill jumbos，digitalization and intelligence are the trends in future. In order to clarify the research direction of the self-developed drill jumbo，combined with the current status of the drill jumbos applied in China's underground mine，where the drilling

The three-arm rock drill trolley is an important large machinery and equipment in the tunnel excavation, and its remarkable environmental protection, high eff iciency and safety features make the trolley more and more widely used, especially indispensable in the construction of long tunnels

Through the analysis of the mechanism of small excavator and rock drill, the advantages and disadvantages of the two and their correlation degree are found.Adding various auxiliary tools on the excavator can not only expand the application scope of the excavator, but also adapt to

The abnormality of high-temperature in the gear box was found while the model ZYYG170A hydraulic rock drill was used at a tunnel in Henan province. After analysis, technicians found the reason was the extremely small fit clearance between the bush and rotation chuck bushing. After the regulation

Brand : MONTABERT
Part No. : 86668969
Description : Oring
Use in : Hc 50

Because of the advantages of large diameter and high efficiency of drilling hole, the drilling machine is widely used in mining and construction. The essence of downhole drilling is that under the action of axial pressure, rock is broken by using two kinds of forces, impact and rotation. Finally

Based on the specific application of rock drilling jumbo in Bayu tunnel of Lalin railway, the overbreak and underbreak control problems often encountered by the rock drilling jumbo are studied, and the closed-loop management mode of rock drilling jumbo in tunnel construction is proposed