Crane Integrated Manipulator with Touch Detection and Operation Stops
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Solution Overview
Problem
The operation of cranes is complicated and difficult due to the need to simultaneously perform various manipulations such as hoisting, turning, and traveling, which makes it challenging for operators to easily manipulate the crane according to their intentions.
Innovation Solution
A crane design that integrates separate members for accelerator and turning manipulations, with a configuration that stops predetermined operations (e.g., turning or traveling) when the operator is not touching the manipulating member, using a neutral-free hydraulic circuit and a controller to manage these operations based on sensor inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the crane uses traditional separate manipulation members for accelerator and turning operations, then the operator can perform manipulations independently, but the operation becomes complicated and difficult due to the need to simultaneously perform multiple manipulations
Solution Approach 1:
The patent combines the accelerator manipulation member and turning manipulation member into a single integrated manipulating member. This merging allows the operator to control both accelerator and turning operations through one unified interface, simplifying the operation process while maintaining the ability to perform both functions simultaneously or independently as needed
2Reliability
If the crane allows continuous operation without stop detection, then work efficiency is maintained, but accidental inertial movements occur when the operator is not touching the manipulating member
Solution Approach 1:
The patent incorporates a touch detection mechanism that provides feedback to the control system about whether the operator is actively manipulating the manipulating member. When the sensor detects that the operator is not touching the manipulating member during operation, the system automatically stops the crane operations, preventing accidental inertial movements while maintaining safety
Solution Approach 2:
The system performs preliminary detection of the operator's touch status before allowing operations to continue. By detecting whether the manipulating member is being touched in advance, the system can proactively prevent unsafe operations from occurring, ensuring reliability before productivity concerns arise
Data Source
AI summary
Provides is a crane in which the manipulation according to an operator's intention is more easily performed. The crane includes a manipulating member capable of performing at least one of an accelerator manipulation for increasing or decreasing a rotational speed of an engine and a turning manipulation of a turning body. A predetermined operation is stopped in a case where an operator is not touching the manipulating member and the predetermined operation (turning operation, traveling operation, or the like) of the crane is performed.