Parallel Drilling and Bolting Head for Faster Rock Reinforcement
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Solution Overview
Problem
Existing bolting heads require positioning movements between drilling and bolt mounting, leading to inefficiencies in rock reinforcement processes, which are critical for safety and productivity in mining and construction.
Innovation Solution
A bolting head design with a drilling unit and a bolting unit mounted in parallel orientation and at a lateral distance, allowing simultaneous drilling and bolt feeding without indexing, along with a frame that can be turned for efficient positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the drilling unit and bolting unit operate sequentially with positioning movements between operations, then the structural simplicity of the bolting head is maintained, but the productivity of the rock reinforcement process deteriorates
Solution Approach 1:
The bolting head is segmented into distinct drilling unit and bolting unit modules that can operate independently. Each unit is mounted on the frame at a lateral distance from the other, allowing simultaneous operation without requiring complex indexing mechanisms between operations.
Solution Approach 2:
The drilling unit and bolting unit are arranged in parallel orientation at a lateral distance from each other, utilizing the lateral dimension of the frame. This spatial arrangement enables both units to operate simultaneously in different positions, eliminating the need for sequential positioning movements.
2Productivity
If the drilling unit and bolting unit are positioned at a lateral distance in parallel orientation, then simultaneous operation and productivity are improved, but the device complexity increases due to the frame structure and positioning requirements
Solution Approach 1:
The frame serves multiple functions: it provides structural support for both the drilling unit and bolting unit, establishes their parallel orientation at lateral distance, and maintains their relative positions during simultaneous operation. This multi-functionality reduces the need for additional complex positioning mechanisms.
Solution Approach 2:
The drilling unit and bolting unit are pre-positioned on the frame at appropriate lateral distances and in parallel orientation before operation begins. This preliminary arrangement ensures that when both units operate simultaneously, they are already in the correct positions, eliminating the need for complex real-time positioning adjustments.
3Loss of time
If the drilling unit and bolting unit operate simultaneously without positioning movements, then the time required for rock reinforcement is significantly reduced, but the reliability of the system deteriorates due to the need for precise lateral positioning and stability during simultaneous operation
Solution Approach 1:
The frame provides localized support and positioning for each unit at specific lateral positions. The drilling unit and bolting unit are mounted at predetermined lateral distances from each other, ensuring stable and reliable operation during simultaneous drilling and bolt feeding without requiring continuous positioning adjustments.
Data Source
AI summary
A bolting head, bolting rig and method of reinforcing a rock surface by means of rock bolts is provided. The bolting head includes a frame and at least one drilling unit and at least one bolting unit mounted to the frame in parallel orientation relative to each other. The drilling unit and the bolting unit can be operated simultaneously and without moving them in relation to the frame, thereby simultaneous drilling and bolt feeding being implemented.