The XCZ280M-2 is a highly integrated machine combining roadheading, temporary support, bolting, cable bolting, and drilling functions in a single unit, fully addressing the diverse demands of excavation, support, and exploration. It is specially designed for use in coal or semi-coal rock roadways with widths ranging from 4.5 to 6.5 meters, heights between 3.3 and 5.1 meters, and rock hardness up to F8. The system is ideally suited for efficient, high-performance tunneling in underground coal mines, offering extensive excavation and bolting coverage, user-friendly operation, labor reduction, and enhanced productivity.

Key Performance Features

• Integrated capabilities including excavation, temporary support, bolting, cable bolting, and drilling
• Optimized for coal and semi-coal rock roadways
• Operating envelope: Width 4.5–6.5m; Height 3.3–5.1m; Rock hardness ≤ F8

System Highlights

Water System:

• Equipped with a two-stage pre-filtration system for high precision and clean water supply
• Utilizes both internal and external spray technologies for reliable dust suppression

Temporary Support System:

• Rapid deployment and retraction of temporary supports
• Large support coverage without interfering with cutting operations

Bolting System:

• Independent operating platform for each bolting machine, positioned near drilling rigs
• Imported motors provide high torque and reliability
• Skid-mounted drill boxes ensure strong rigidity and long stroke
• Equipped with both roof and side bolting mechanisms
• Stable drilling with reliable guidance and minimal offset
• Supports minimum unsupported roof distance by achieving full sidewall coverage

Electrical System:

• IP67 protection rating for long-term reliability in harsh environments
• Intelligent monitoring and fault diagnosis system
• Uses globally recognized brand components with comprehensive protection functions
• Remote control compatible, minimizing worker exposure to dust and improving operational safety
• Reserved interfaces for smart upgrades and remote automation

Hydraulic System:

• Load-sensing hydraulic technology for low energy consumption and flexible, smooth operation
• Fitted with imported Rexroth valves for fast response and high reliability
• Cutting cylinder output increased by 20%; stepless speed adjustment through multi-valve coordination

Travel System:

• Modular support technology reduces ground pressure for stable contact
• High tractive force and ±18° climbing capability

Cutting System:

• Optimized bit layout for better force distribution and higher efficiency
• Tungsten carbide bits reduce wear by over 30%
• Enhanced rotary table design increases vibration resistance and extends lifespan by 40%

Loading and Conveying System:

• First-stage scraper conveyor uses high-strength imported ring chains with direct-drive motors
• Smooth operation and extended service life
• Open-type design with front-mounted passive wheels to prevent material jamming
• Re-designed structure allows 42% larger angle for rock transfer, improving flow and reducing wear

Intelligent Roadheader-Bolter System

Control Modes:

• Local manual control
• Line-of-sight remote operation
• Underground remote control
• Centralized surface control

Personnel Detection:

• Dual detection system: facial recognition camera + infrared sensor
• Proximity alerts and emergency stop function ensure operator safety

Remote Operation:

• Operable up to 2000 meters away with transmission latency below 300ms
• Interfaces reserved for coordination with other tunneling equipment, enabling one-click start/stop and linked operations

Digital Twin and Scenario Reproduction:

• Real-time acquisition of operational parameters
• Synchronized 3D model updates via digital twin technology
• Intelligent self-diagnostics and maintenance alerts

Autonomous Navigation:

• Positioning accuracy within 10cm; angle error <0.1°
• Auto-correction ensures alignment along tunnel centerline
• Gradient tracking enabled via attitude data

Automatic Cutting:

• Accurate tunnel shaping with cross-sectional error <10cm
• Intelligent sensing of rock hardness through motor current and cylinder pressure feedback
• Adaptive cutting avoids motor stalling
• Automatic head position compensation to minimize deviation from vibration, preventing over/under-excavation