Rock Drill Feed Beam Protective Structure Design
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Solution Overview
Problem
Existing noise dampening and safety structures for rock drilling rigs fail to account for the bending and twisting of feed beams, leading to stress forces and susceptibility to tearing, and do not effectively manage noise and safety concerns around inhabited areas.
Innovation Solution
A protective structure consisting of blocks attached to the feed beam using specialized fastening units that allow for bending and twisting without transferring excessive forces, maintaining the structure's original shape and providing effective noise dampening and safety features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protective structure is rigidly attached to the feed beam, then the noise insulation and safety protection are improved, but the structure becomes susceptible to tearing due to stress forces from feed beam bending and twisting
Solution Approach 1:
The protective structure is divided into multiple detachable blocks that can be separately attached to the feed beam. This segmentation allows each block to be independently positioned and secured, reducing the transmission of stress forces from feed beam bending and twisting while maintaining overall protective integrity.
Solution Approach 2:
The attachment system incorporates movable and adjustable components that allow the protective blocks to adapt to the dynamic movements of the feed beam during drilling operations. This dynamic attachment reduces stress concentration and prevents tearing while maintaining reliable noise insulation and safety protection.
2Ease of manufacture
If the protective structure is designed to be lightweight and affordable, then the manufacturing cost and device complexity are reduced, but the structure may be more susceptible to damage from external forces
Solution Approach 1:
The protective structure consists of multiple separate blocks that can be manufactured using simple, cost-effective methods. Each block is independently manufacturable, reducing overall manufacturing complexity and cost while maintaining adequate strength through proper material selection and block geometry.
Solution Approach 2:
The attachment system uses adjustable fastening mechanisms that can be optimized for different operating conditions and force levels. This allows the protective structure to maintain adequate strength against external forces while using lighter, more affordable materials and simpler construction methods.
3Object-affected harmful factors
If the protective structure completely encloses the feed beam, then the noise insulation is maximized, but the structure becomes more complex and heavier
Solution Approach 1:
The protective structure is composed of multiple discrete blocks that can be selectively positioned around the feed beam. This segmentation provides effective noise insulation at key noise-generating areas without requiring complete enclosure, thereby reducing overall structural complexity and weight.
Solution Approach 2:
The protective blocks are strategically positioned at locations where noise generation is highest, such as around the drilling machine and impact device. This local concentration of protective coverage maximizes noise insulation effectiveness while minimizing the total amount of protective structure material needed, reducing complexity and weight.
Data Source
Figure 1a~1b
Figure 2~3b
Figure 4a~4c
AI summary
A method for attaching a protective structure (7) to a feed beam (6) of a rock drilling rig, and a protective structure (7) for a rock drilling rig. The protective structure (7) is at least partly arranged around the feed beam (6) so that as the feed beam (6) bends in a bending direction (B) of its longitudinal axis and/or twists about its longitudinal axis in a twisting direction (A), the protective structure (7) substantially maintains its original shape.