Aerial Work Platform Boom Control with Dynamic Range Limits
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Solution Overview
Problem
Existing aerial work platforms with vehicles lack the ability to dynamically adjust the allowable work range to suit varying site conditions, often resulting in an unsuitable safety margin for the specific worksite, as the pre-set range may not align with the actual height and distance requirements of the work object.
Innovation Solution
An operation control device that allows for the designation of an allowable work range by height and horizontal distance, using a detection system to prevent the boom from exceeding these limits, with a prevention release switch for flexible operation and an alarm for exceeding the set range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the allowable work range is set in advance to prevent vehicle from falling over, then the vehicle stability is improved, but the adaptability to actual worksite conditions deteriorates
Solution Approach 1:
The patent applies dynamics by making the allowable work range adjustable rather than fixed. The control unit allows operators to modify the allowable work range based on actual worksite conditions, transforming a static safety parameter into a dynamic one that can adapt to different operational environments while maintaining vehicle stability through controlled adjustments.
Solution Approach 2:
The patent implements parameter changes by allowing modification of the allowable work range parameters (horizontal distance and height limits) according to actual worksite requirements. The control unit stores and adjusts these parameters dynamically, enabling the system to maintain reliability while adapting to varying work conditions through parameter optimization.
2Reliability
If the operation control device prevents boom operation beyond predetermined limits, then safety is improved, but the flexibility to accommodate varying worksite requirements deteriorates
Solution Approach 1:
The control unit dynamically adjusts the allowable work range based on operator input and worksite conditions. Rather than enforcing rigid predetermined limits, the system allows real-time modification of safety parameters, enabling operators to balance safety constraints with actual work requirements through controlled parameter changes.
Solution Approach 2:
The system enables parameter changes by allowing operators to modify the allowable work range parameters (horizontal distance limit and height limit) according to specific worksite needs. The control unit stores these customized parameters and enforces them, providing both safety through parameter-based control and flexibility through adjustable settings.
3Device complexity
If a fixed allowable work range is used, then the control system simplicity is maintained, but the ability to match actual work conditions deteriorates
Solution Approach 1:
The control unit maintains relative simplicity while enabling parameter adjustments. Operators can input custom allowable work range values (horizontal distance and height limits), and the control unit stores and applies these parameters. This approach preserves system simplicity through straightforward parameter storage and comparison logic while significantly improving adaptability to various worksite conditions.
Data Source
AI summary
An operation control device for a vehicle with an aerial work platform comprises a vehicle body (3), a boom (5) provided on the vehicle body so as to be capable of rotating, vertically swinging, and extending and contracting, a work platform (8) provided at the tip of the boom, an operation device for operating the boom, an operation control device (9) for controlling rotating, vertically swinging, and extending and contracting the boom based on an operation signal from the operation device, a designation device for designating an allowable work range of the work platform, and an operation preventing device for preventing the operation of the boom by the operation control device so that the work platform does not exceed an allowable work range designated by the designation device.