In view of the requirements for high strength and high precision large gears of high-power transmission system of hydraulic rock drills, this paper studies a multi-ram forging hot extrusion forming technology for large 15CrMn steel gears, and designs corresponding dies. Based on the thermoplastic

To address the issues of low construction efficiency and high safety risks associated with traditional microbench method in weak surrounding rock tunnels， a three-bench construction method using a dual-boom drilling jumbo was studied based on the Ganjia tunnel of Xining-Chengdu railway（ rock

Brand : EPIROC
Part No. : 3128290020
Description : Cover
Use in : Boltec S , Boomer 281 , Boomer 281dh , Boomer 282 , Boomer 353 , Boomer K111 , Boomer L2c , Boomer L2d , Boomer M2c , Boomer M2d , Boomer S1d , Boomer S2 , Boomer Xl3 , Simba H1257 , Simba S7d

Taking the Xinfangdoushan Tunnel on the Yichang-Fuling High-Speed Railway as the engineering background, a comprehensive investigation was performed on the integrated construction technology of tunnel excavation and support. Meanwhile, a comparative analysis was conducted on the operational

Tunnel construction can be easily affected by complex terrain, and in such cases, drilling and blasting become the main technical methods. This article explores the straight-eye slotting technique related to three-arm rock drilling jumbos, mainly involving equipment performance and blasting

The geological conditions of the single-track long railway tunnel are complex and the construction is difficult. How to speed up the construction efficiency and effectively to ensure the construction quality and safety is one of the challenges in tunnel construction. Based on the mechanized

To address the low efficiency and high risks of the traditional soft rock step excavation method, a large-section soft rock tunnel intelligent blasting excavation technology was developed and applied based on the Baokang Tunnel of the Zhengwan High-Speed Railway project. The technical principles

Brand : EPIROC
Part No. : 3128301237
Description : Cover
Use in : Boltec S , Boomer M2c , Boomer M2d , Boomer S1d , Boomer S2 , Simba H1257 , Simba S7d

Rock drilling jumbos play an important role in tunnel construction. As the main component of a rock drilling jumbo, the performance of the drilling rig determines the overall effectiveness of the jumbo. In practical use, premature wear of drilling rigs often occurs. By studying the structure and

Using the Yubai Tunnel on the Hamu high-speed railway as a case study, this paper looks at full-section tunnel construction in weak surrounding rock. By optimizing drilling and blasting techniques, applying guided fracture controlled blasting, improving shotcrete quality, and reasonably adjusting