Crane Interference Planning Using Multi-Plane 3D Occupancy Views
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Solution Overview
Problem
Existing methods struggle to accurately estimate the possibility of interference between a crane's attachment and external structures due to variations in distances between the attachment's sides and the external structure, making it difficult to assess potential collisions.
Innovation Solution
A working plan assistance device models the crane and external structure in a three-dimensional virtual space, defining a designated plane group with multiple spaced planes, allowing for precise estimation of interference by displaying occupation modes in these planes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only a cross section of a model image of the external structure and a model image of the work machine are displayed, then the display is simple, but it is difficult to estimate a possibility of interference between the attachment and the external structure
Solution Approach 1:
The invention divides the three-dimensional space into multiple two-dimensional cross-sectional planes perpendicular to the revolution axis line. Each plane shows the attachment at a specific angular position, allowing detailed examination of interference possibilities at different orientations without displaying the entire complex three-dimensional motion trajectory at once.
Solution Approach 2:
The invention transforms the three-dimensional interference estimation problem into a series of two-dimensional cross-sectional analyses. By displaying multiple planes with different angular positions of the attachment, it adds the dimension of rotational orientation to the analysis, enabling more precise interference assessment while maintaining relatively simple two-dimensional displays.
2Measurement precision
If multiple designated planes are displayed to improve interference estimation precision, then the precision of estimation is improved, but the device complexity increases
Solution Approach 1:
The system segments the rotational movement of the attachment into discrete angular intervals, creating multiple designated planes. Each plane captures the attachment at a specific angle, allowing precise interference checking at critical positions without requiring continuous three-dimensional rendering, thus balancing precision with system complexity.
Solution Approach 2:
Instead of displaying all possible angular positions continuously, the system selects specific designated planes at predetermined angular intervals. This partial action approach provides sufficient precision for interference estimation while avoiding the excessive complexity of displaying every possible orientation.
Data Source
AI summary
A crane M (work machine) and a building Q (external structure) are modeled in a three-dimensional virtual space, and space occupation modes in the three-dimensional space are defined. Further, in the three-dimensional virtual space, a designated plane group configured with a plurality of designated planes P1 and P2 spaced apart from each other is defined along an upper revolving body and/or an attachment M1 which are revolvable with respect to a lower traveling body of a base body M0 of the crane M. One designated plane group is defined in accordance with an extension mode of the upper revolving body at one time point. Further, a second-order working plan assistance image, in which respective occupation modes of the crane M and the building Q in the designated planes P1 and P2 constituting the designated plane group are displayed, is output to a terminal output interface 22.