Rock Drill Rig Handling Device With Swing Arm And Linear Guide
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Solution Overview
Problem
Current handling devices for rock drill rigs are inefficient and unstable when handling drill string components, particularly during the process of lengthening the drill string and replacing drill bits, as they do not provide flexible and secure transfer capabilities.
Innovation Solution
A handling device with a linear guide and a swing arm supported by a slide, featuring three rotational axes that allow for flexible positioning and adjustment, enabling precise and secure transfer of drill string components between the drill string position and a delivering position, with axially separated gripper pairs and a hydraulic cylinder for axial displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a one way sleeve supporting device is used for transfer, then the drill string component can be transferred between horizontal and vertical positions, but the handling stability is insufficient
Solution Approach 1:
The handling device is divided into multiple functional segments: a slide for linear movement along the feed beam, a swing arm for angular positioning, and a gripping device with multiple gripper pairs for secure holding. This segmentation allows each component to perform its specific function optimally, with the gripper pairs providing stable holding while the slide and swing arm enable flexible transfer between positions
Solution Approach 2:
The device employs dynamic positioning capabilities through the swing arm that can rotate around the feed beam axis and the slide that can move linearly along the feed beam. This dynamic structure allows the gripping device to adapt to different drill string positions and orientations during the transfer process, maintaining stability throughout the motion sequence
2Measurement precision
If multiple rotators and swing arms are added for flexible positioning, then the positioning accuracy is improved, but the device complexity increases
Solution Approach 1:
The swing arm serves multiple functions: it supports the gripping device, provides rotational movement around the feed beam axis via the first rotator, and enables angular positioning through the second rotator. The slide simultaneously provides linear displacement and serves as a mounting base for the swing arm assembly. This multi-functionality reduces the need for separate components, managing complexity while achieving precise positioning
Solution Approach 2:
The device achieves three-dimensional positioning by combining linear movement along the feed beam (one dimension) with rotational movement around the feed beam axis and angular swing (additional dimensions). This multi-dimensional approach allows accurate positioning of drill string components in space without requiring an equally complex structure in each dimension
3Productivity
If the drill string is lengthened or drill bit replaced during drilling, then the drilling operation can continue, but considerable time is consumed for handling
Solution Approach 1:
The gripping device is pre-positioned along the feed beam and can quickly engage drill string components. The slide and swing arm are pre-configured to enable rapid transfer movements. This preliminary positioning and preconfiguration of the handling mechanism minimizes the time required for drill string lengthening or drill bit replacement operations
Solution Approach 2:
The handling device enables continuous operation by facilitating quick transfer of drill string components and drill bits. The coordinated movement of the slide along the feed beam and the swing arm rotation allows seamless replacement operations, minimizing idle time and maintaining continuous drilling productivity
Data Source
AI summary
Handling device for a rock drill rig for handling drill string components for a drill string, wherein the handling device includes a linear guide, a slide being displaceable along the linear guide, and, supported by the slide, a gripping device, being displaceable between a drill string position in the rock drill rig and a delivering position outside the rock drill rig. The gripping device is supported by a swing arm which is swing drivable around a first rotational axis. The swing arm is swing drivable in respect of the slide around a second rotation axis. The swing arm support and the swing arm are swing drivable around a third rotational axis for swinging the gripping device to the drill string position.