ANALYSIS OF ABNORMAL FAILURE TYPES AND CAUSES OF MINING TROLLEY DRILL ...

Types of drill rigs in mining

Types of drill rigs in mining

Top hammer drill rigs are equipped with powerful hydraulic drills as well as a hammer. The hammer strikes the drill rod, creating a percussive force that travels to the drill bit and displaces the rocks, leaving them susceptible to pressurized air or water. This kind of rig is renowned for its reliability in the toughest. . The purpose of a down-the-hole drill rig is to drill large-diameter holes downwards, consisting of a jackhammer screwed to the bottom of a drill string. Like other drill rigs, the DTH breaks up the rock so it can be flushed out using air or water. This particular rig. . Rotary blasthole drill rigs drill into the earth in order to create holes that can then be filled with explosives that clear large sections of rock for. . The dimensional stone drill rig has a more esoteric function that its other drill rig counterparts, in that its purpose is to drill precise holes in the ground in order to excavate for natural. . Development drill rigs are mining vehicles that drill holes into the surface of a coalbed that explosives can be inserted into and detonated. These vehicles are modular, meaning they can be. [pdf]

Screw air compressor failure analysis

Screw air compressor failure analysis

The analysis of the cause of the failure and the solution are as follows: (1) Whether the condensed water discharged from the trap has a large oil content, if so, check the leakage point in the unit and eliminate it, check whether the oil level of the compressor is too high, if so, reduce the oil level; (2 ) Whether the opening pressure of the minimum pressure valve is normal, if so, troubleshoot, and it is necessary to replace the valve; check whether the oil return pipe is blocked, if so, clean or replace the oil return pipe: (3) Replace the oil separator core. [pdf]

Rock drill buffer piston failure case

Rock drill buffer piston failure case

In this study, the fracture of piston for rock drill produced from case hardening steel is investigated. In order to study the causes of the fracture, specimens prepared from the damaged pistons were subject. [pdf]

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