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Model Code Explanation for WPZ & WPZC Roadway Repair Machines
2026-07-21Standard Model Analysis of WPZ / WPZC Series Roadway Repair Machine
- Compilation Basis
All WPZ and WPZC series model codes comply with the national coal industry standard MT/T 154.1 issued by China Mining Products Safety Approval and Certification Center (aqbz.org). All models are MA-certified explosion-proof multi-functional roadway maintenance equipment for underground coal mine operation.
1.1 Standard Letter Code Definition
| Code | Full Name | Technical Explanation |
| W | Trackless Roadway Equipment | Special trackless maintenance machinery for underground tunnels |
| P | Breaking Function | Equipped with hydraulic breaker for rock breaking and danger rock removal |
| Z | Mucking & Loading | Integrated digging and mucking structure for gangue cleaning |
| C | Diesel Power | Explosion-proof diesel engine drive, cable-free operation (WPZC only) |
| L | Tracked Chassis | Universal crawler undercarriage for complex underground roadways |
1.2 Series Official Definition
WPZ Series Electric Roadway Repair Machine: MA-certified explosion-proof electric tracked maintenance equipment, featuring zero emission and low noise, specially designed for high-gas coal mine roadway renovation, rock breaking and mucking work.
WPZC Series Diesel Roadway Repair Machine: MA-certified explosion-proof diesel tracked roadway repair equipment with independent power system, unlimited working range, ideal for powerless inclined shafts and long-distance tunnel maintenance.
1.3 Standard Model Format
Format: WP(Z/ZC)-Installed Power(kW)/Breaker Impact Energy(J) L
Rule: Installed power first, hydraulic breaker impact energy second, fixed parameter sequence for official certification and nameplate marking.
1.4 Standard Model Examples
- WPZ-18.5/350L: 18.5kW electric roadway repair machine, 350J breaker impact energy, mini type for narrow tunnels
- WPZ-37/600L: 37kW medium-duty electric tunnel maintenance machine, 600J breaking energy for general roadways
- WPZC-55/900L: 55kW diesel roadway repair machine, 900J impact energy, suitable for powerless inclined tunnels
- WPZC-75/2100L: 75kW heavy-duty diesel tunnel renovator, 2100J high breaking energy for hard rock roadway trimming and flooring
1.5 Core Product & Certification Advantages
- WPZ Electric Type (MA Certified): Equipped with flameproof motor compatible with 660V/1140V underground power supply, compliant with GB3836 explosion standards. Zero exhaust and low noise ensure safe operation in high-gas and poorly ventilated coal mines.
- WPZC Diesel Type (MA Certified): Adopts National IV explosion-proof diesel engine with flame retardant exhaust and explosion-proof braking system. Cable-free design realizes flexible and long-distance underground operation without power supply limitation.
- Multi-functional Integration: Integrates hydraulic breaking, digging, mucking, roadway shaping, floor leveling and dangerous rock removal. One machine replaces multiple devices to reduce construction cost and improve efficiency.
- Strong Site Adaptability: Heavy crawler chassis adapts to muddy, rocky and uneven underground road surfaces. Compact body fits various medium and small section tunnels for daily roadway maintenance.