The HT91 (CYTM41/2C) and HT92 (CYTM41/2) mining hydraulic roof bolters are available in two types: resin anchor and split-set anchor. One rig can perform multi-process operations including mesh installation, drilling anchor holes with a three-position thruster, delivering cartridges, and installing anchors. It achieves full mechanization of all processes in roof bolting support work and is an advanced fully hydraulic anchoring device for rock roadway.
Product Features
● Programmed automatic anti-jamming
During drilling, when a jamming tendency occurs, the rock drill begins to pull back with low impact. After the jamming is cleared, the half-power hole-opening procedure restarts, ensuring successful clearance of jamming in one attempt.
● Automatic mesh gripping mechanism
This mechanism adopts five kinematic pairs, offering flexible and lightweight movement, enabling mesh retrieval, gripping, and installation without dead angles. The telescopic arm design accommodates a wider working range and can grip mesh sheets up to 100 kg.
● Anchor storage magazine device
This anchor storage device can store multiple anchor types (split-set/resin), with a capacity of 10 anchors, covering lengths of 1.5–3 m. The rotary loading and feeding mode features simple structure, easy operation and maintenance, secure clamping, and accurate feeding positioning.
| Overall Performance | HT91/2(Dual Boom) | HT91 | HT92 |
| Applicable roadway range | 3800×3800——6000×6000mm | 3500×3500——6000×6000mm | 3000×3000——5000×5000mm |
| Overall dimensions | 10000×1750×2270(3140)mm | 10400×1850×2270(2970)mm | 10000×1750×2070(2980)mm |
| Ground clearance | 280mm | 300mm | 310mm |
| Overall weight | 15000kg | 16500kg | 13500kg |
| Turning radius | Inner 4000mm Outer 6300mm | Inner 3500mm Outer 6200mm | Inner 3000mm Outer 5800mm |
| Total installed power | 67.5kW | 67.5kW | 67.5kW |
| Main motor power | 55kW | 55kW | 55kW |
| Voltage(customizable) | 380V | 380V | 380V |
| Rock drill specification | RC1200 | HC25 | |
| Impact power | 14kW | 8kW | |
| Impact frequency | 100Hz | 65Hz | |
| Impact pressure | 180bar(max) | 150bar(max) | |
| Rotation system | Independent rotation | Independent rotation | |
| Applicable shank | R32 | R32 | |
| Drilling diameter | Φ32-45mm | Φ32-45mm | |
| Thruster | RC1200 | HC25 | |
| Total length | 3080mm | 3210mm | |
| Drill rod length | 2475mm | 2475mm | |
| Split-set anchor | 2000mm | 2000mm | |
| Resin anchor | 2200mm | 2200mm | |
| Hole depth | 2265mm | 2265mm | |
| Anchor Magazine | |||
| Anchor type | Split-set/resin anchor | ||
| Magazine capacity | 10 pieces(depending on φ≤150mm) | ||
| Anchor length | 1500-2500mm | ||
| Drilling Boom | |||
| Compensation stroke | 480mm | 480mm | 480mm |
| Telescopic length | 1250mm | 1250mm | 900mm |
| Pitch angle | +45°/-16° | +50°/-30° | +50°/-30° |
| Swing angle | Left/right ±45° | ±35° | ±35° |
| Mesh Gripping Manipulator Arm | |||
| First arm pitch angle | 0-60° | Manipulator lift | 180° |
| Second arm pitch angle | +60°/-68° | Manipulator telescopic | 800mm |
| Second arm telescopic length | 1500mm | Manipulator rotation/swing | 180° |
| Max. metal mesh weight | 50kg | Max. metal mesh weight | 50kg |
| Chassis | |||
| Engine | Cummins diesel engine | Dongfanghong diesel engine | Yanmar diesel engine |
| Power | 81kW(2500r/min) | 73.6kW(2200r/min) | 53.7kW(2100r/min) |
| Torque | 480N.m(1600r/min) | 330N.m | 308N.m(1365r/min) |
