The MWD2/0.12L hydraulic excavator for coal mines is a pure electric, explosion-proof, ultra-small underground excavation machine. Specifically designed for the working conditions of low, narrow, and poorly ventilated small mine tunnels, it differs from traditional diesel excavators and fuel-powered equipment. This machine focuses on precise excavation, replacing manual labor, and tunnel shaping operations, making it a core multi-functional piece of equipment for underground tunnel repair and minor construction projects. The entire machine uses an explosion-proof electric power system, producing no exhaust fumes or waste gas emissions, completely eliminating the safety hazards of fuel-powered underground machinery. It is suitable for the highly enclosed and poorly ventilated underground environment, ensuring higher operational safety.

The equipment features a compact structure and small size with an extremely small turning radius, allowing it to move flexibly through ultra-narrow tunnels less than 1.2 meters wide, solving problems such as the inability of traditional equipment to enter, numerous construction blind spots, and collisions with tunnel walls. Employing a fully hydraulic control system, its precise and delicate movements enable it to complete intricate processes such as thin-layer coal collection, tunnel bottom leveling, ditch excavation, and cross-sectional widening, effectively improving the regularity of underground construction.

This machine supports quick attachment changes and can be equipped with devices such as hydraulic breakers, milling heads, and buckets. It can perform multiple functions such as digging, breaking, milling, bottom cleaning, and finishing in one machine, eliminating the need for multiple machines to work alternately, thus significantly saving underground construction space and engineering costs. The electric machine operates stably, with low noise and low heat generation, and can operate continuously for a long time. It is suitable for high-frequency working conditions such as routine mine repairs, support surface treatment, and local collapse cleanup.

The machine is fully equipped with explosion-proof features, and its electrical system has multiple protections against leakage, overload, and overheating, meeting coal mine safety standards. With a low failure rate, simple maintenance, and lower energy consumption, it is a high-performance, cost-effective explosion-proof electric excavator suitable for small coal mines, metal mines, and underground tunnel construction requiring precision. It is available from the manufacturer, with customization and export options supported.

The drawings supplement the core specifications of the bucket and the overall machine’s lateral width, along with the horizontal and vertical operating dimensions, to verify the passage space in underground roadways and assist overseas customers in selecting the appropriate machine model.

The drawings mark key indicators such as the length, width and height of the complete machine, the maximum excavation radius, and the vertical excavation depth, which can be used to verify the suitability of the tunnel and provide a reference for overseas customers in selecting dimensions.

Configuration table of mining hydraulic excavators

Standard Model Analysis of MWD / MWC / KWD / KWC Mining Hydraulic Excavators