1.25m-Wide Hydraulic Roof Bolting Drill Rig for Coal Mine Use

The 1.25-meter-wide hydraulic roof bolting drill rig is a specialized piece of roadway support equipment designed for use in coal mines. When used in conjunction with roadheaders and drilling-loading units, it efficiently completes the support process, ensuring operational balance. This rig is suitable for roof and rib bolting operations in coal and semi-coal roadway faces and can also be adapted for drilling blasting holes and exploratory boreholes (e.g., for detecting water or gas) within coal seams.

Performance Features

Flexible Positioning:
Equipped with two horizontally movable bolting arms, the rig provides full-face mechanized support, enabling both roof and rib bolt and cable installation. It also supports front-end blasting hole drilling and exploratory borehole drilling (for water and gas detection) at the working face.

High Quality:
The rotary bolter offers high output torque—up to 350 N·m—ensuring strong pre-tightening force for bolts and eliminating the need for secondary tightening.

Enhanced Safety:
The rig features an advanced temporary support structure with pitch, elevation, and telescoping movement capabilities. This allows operators to work under permanent support, eliminating the risks associated with unsupported roof operations. The support mechanism also doubles as a stabilizer.
The hydraulic system uses a load-sensing design to reduce energy consumption and operational costs, and core hydraulic components are sourced from renowned international brands.

A multi-stage filtration system ensures hydraulic fluid cleanliness, reducing system failure rates. Proper pump flow matching and efficient water cooling enable the hydraulic system to function efficiently and maintain optimal temperature.

Reliable Hydraulics:
The hydraulic system is designed for safety and dependability, with major components imported from trusted global brands to ensure stable performance.

Integrated Anchoring Support:
Each drill arm is equipped with a power output port for strand tensioning (pressure > 40 MPa), simplifying cable anchoring operations.

Featured Parallel Bolting Arms

• Stable Positioning:
  During vertical movements, the bolter and operator platform remain parallel to ensure precise, rapid positioning and allow workers to operate in a stable, level posture.

• Extended Reach:
  The long-stroke telescopic boom compensates for displacement errors during arm movement within the roadway cross-section, expanding the operating range and enabling dual-row bolting.

• Foldable Operation Platform:
  The operator platform is foldable to accommodate coordination with roadheaders during alternating traffic. Positioned on the outer side near the roadway rib, it facilitates both roof and rib bolting operations, addressing limitations of conventional central platforms where operators were too far from the rib wall.

• Flexible Arm Articulation:
  Dual swing cylinders at the front of each arm allow for precise adjustment, supporting both roof and rib bolting operations and enabling forward drilling capabilities.

• Robust Bolter Design:
  The independently developed bolter features high tensile strength, excellent bending and torsional resistance, compact structure, and is engineered for heavy-duty support applications.