Rock Drill Rig Magazine Transfer Unit Pivot Arms
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Solution Overview
Problem
The manual handling of drill string components in rock drill rigs is labor-intensive and poses a risk of injury, particularly during the separation and threading of tubular components, which is inefficient and hazardous due to frequent lifting and alignment requirements.
Innovation Solution
A handling device with a transfer unit featuring pivot arms and movable stop elements that facilitate safe and efficient separation and positioning of drill string components, allowing for precise adjustment to accommodate different diameters and ensuring secure transfer between the drill rig and a magazine, reducing manual labor and risk of injury.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual handling of drill string components is performed, then flexibility and simplicity are maintained, but operator safety and efficiency deteriorate due to lifting and squeezing injuries
Solution Approach 1:
A transfer unit with movable stop elements and pivot arms is introduced as an intermediary mechanism between the magazine and the drill string assembly position. This intermediary device automatically separates, transfers, and positions drill string components, eliminating direct manual handling while maintaining operational flexibility.
Solution Approach 2:
The drill string components are designed to be self-transferred through the transfer unit. The movable stop elements and pivot arms enable the components to separate and position themselves automatically during the transfer process, reducing the need for operator intervention and associated injury risks.
2Productivity
If frequent lifting and alignment of drill string components is performed, then drill bit replacement efficiency is maintained, but operator strain and injury risk increase
Solution Approach 1:
The transfer unit acts as a mediator that handles the physically demanding tasks of lifting and aligning drill string components. The pivot arms and support means enable smooth transfer and positioning without requiring operators to manually lift heavy components, thereby maintaining productivity while reducing physical strain.
Solution Approach 2:
The transfer unit incorporates movable and pivotable components that dynamically adapt during the transfer process. The pivot arms can rotate to accommodate different component positions, and the support means can incline to facilitate component movement, enabling efficient handling without fixed rigid structures that would require precise manual alignment.
3Ease of manufacture
If a fixed magazine structure is used, then manufacturing simplicity is maintained, but adaptability to different drill string component diameters deteriorates
Solution Approach 1:
The magazine incorporates movable stop elements and pivotable support arms that can adjust their positions dynamically. This allows the same magazine structure to accommodate drill string components of different diameters by repositioning the stop elements and adjusting the pivot arm angles, maintaining manufacturing simplicity while gaining versatility.
Solution Approach 2:
The transfer unit is designed with universal components that can handle multiple types of drill string components. The pivot arms and stop elements can be repositioned to work with various component diameters and configurations, allowing a single magazine design to serve multiple functions without requiring custom-built structures for each component type.
Data Source
AI summary
A handing device for handling drill string components in a rock drill rig. The handing device includes a magazine for storing drill string components to be introduced into and removed from a drill string position of the drill rig. The magazine includes, in the region of a loading position, a transfer unit for separation of a drill string component being positioned on a support from an adjacent drill string component and to transfer the separated drill string component to the loading position. The transfer unit includes a plurality of pivot arms being pivotal around a pivot axis, being parallel to the axial direction, from a first position. The pivot arms lie against a drill string component being closest to the loading position on the support, to a second position. The pivot arms allow bringing down the separated drill string component to the loading position. Also a rock drill rig.