The drilling jumbo is an important equipment for mining mechanization, the working performance of the drilling arm hydraulic system directly affects the operation efficiency of the drilling jumbo. After testing for the performance of the drilling arm hydraulic system, the impact, rotation

Taking the construction of Zhangjihuai Railway Guantian Tunnel Project as an example，through theoretical analysis and field test，the following research results are mainly obtained. (1) Through theoretical analysis and field test，the hole，drilling and charging of the three-arm drilling rig

Brand : EPIROC
Part No. : 0335217100
Description : Circlip
Use in : Boltec 235 , Boltec 235h , Boltec Lc , Boltec Md , Boomer 353 , Boomer L2c , Boomer L2d , Boomer M1d , Boomer M2d , Boomer Xe3 , Boomer Xl3 , Rd 18u , Roc D65 , Roc D7 , Roc D9 , Roc F6 , Roc F9 , Roc L8 ...

Combined with the engineering project,the characteristics and construction principle of the improved three-arm hydraulic drill jumbo are elaborated,the key points and matters needing attention in the construction of grouting drilling of the three-arm hydraulic drill jumbo are introduced

The drilling and blasting method for tunnel has many disadvantages such as low mechanization,bad construction environment and high labor intensity. Hence,the large cross-section construction technologies for Hubei Section on Zhengzhou-Wanzhou High-speed Railway are summarized from the aspects

During the last decade,DTH impactors(also called DTH hammers) have grown by leaps and bounds and a lot of specialized manufacturing enterprises with tremendous strength have sprung up.Their products have been popular in the country due to their supreme quality.The paper compiles

with the leading DTH hammer which has the widest applications being the main thread, the paper describes the four generations of the DTH hammers respectively produced during the various periods since the founding of the New China, which are grouped in time order. The purpose is to let

Brand : EPIROC
Part No. : 3115296500
Description : Guide
Use in : Cop 2160 , Cop 2550+ , Cop 2560

during the last decade, DTH impactors (also called DTH hammers) have grown by leaps and bounds and a lot of specialized manufacturing enterprises with tremendous strength have sprung up. Their products have been popular in the Country duo to their supreme quality. The paper compiles the relevant

The properties of ore-rock are the key restraining factors for rock drilling efficiency and cost,extending the bit life is an effective measure to improve rock drilling efficiency and reduce cost.In view of the problem that the service life of the bit is generally short in hard and strongly abrasive