Crane Tool Direction Control for Simplified Operator Guidance
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Solution Overview
Problem
Existing crane operation systems require multiple input commands from operators, placing high demands on their skills and efficiency, especially in tasks involving complex movements and obstacle avoidance, leading to inefficiencies and inaccuracies, particularly for inexperienced operators.
Innovation Solution
A crane arrangement with a crane controller that receives directional and drive commands to control the crane tool assembly, allowing operators to guide the tool's movement using a direction indicator, reducing the need for simultaneous control of multiple actuators and simplifying the operator interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional crane control systems are used with multiple input commands for individual actuator control, then precise control of each crane part is achieved, but operator skill requirements and system complexity increase significantly
Solution Approach 1:
The patent introduces a direction indicator as an intermediary element that visually represents the desired movement direction of the crane tool assembly. Instead of requiring operators to directly control multiple actuators, the system uses the direction indicator as a mediator that translates operator intent into coordinated actuator movements through automated control algorithms.
Solution Approach 2:
The patent replaces the mechanical control system where operators directly manipulate multiple actuators with an automated control system. The controller automatically calculates and executes the coordinated movements of multiple actuators based on the direction indicator input, substituting complex mechanical control operations with automated computational control.
2Ease of operation
If multiple input commands are required for simultaneous control of multiple actuators, then complete control authority is maintained, but operator workload and training requirements increase
Solution Approach 1:
The control system performs self-service by automatically calculating and executing the coordinated movements of multiple actuators based on the direction indicator input. The system serves itself by autonomously determining the appropriate actuator commands without requiring the operator to manually control each actuator, thereby reducing operator workload while maintaining complete control authority.
3Manufacturing precision
If traditional crane control without direction indicator guidance is used, then direct actuator control is maintained, but movement accuracy and obstacle avoidance capability decrease
Solution Approach 1:
The direction indicator serves as a visual intermediary that guides the crane tool assembly movement along desired paths. The indicator provides real-time visual feedback about the intended movement direction, enabling operators to achieve more accurate movements and better obstacle avoidance by following the visual guidance rather than relying solely on abstract actuator control commands.
Data Source
AI summary
The present disclosure relates to a crane arrangement (2) comprising a crane controller (200) for control of movement of a crane tool assembly (10) arranged at a second, free end of a crane boom system, said crane controller being arranged to receive a directional command for rotational displacement of the tool around its rotation axis, z_r, from an initial pointing direction, x0, of the direction indicator (11) of a tool (9) and to based thereon control at least one of said plurality of actuators to perform displacement of the tool around its rotation axis, z_r according to the directional command to a desired pointing direction, x1, of the direction indicator. The crane controller is further arranged to receive a drive command for movement of the crane tool assembly and to control at least one of said plurality of actuators to perform movement of the crane tool assembly along the desired pointing direction, x1, of the direction indicator (11) of the tool (9).