Tiller Arm Length Adjustment for Industrial Truck Ergonomics
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Solution Overview
Problem
Industrial truck tiller arms with adjustable length are not optimized for user safety and ergonomics, particularly when the user transitions from walking behind the truck to riding on a platform, as existing solutions do not automatically adjust length based on the user's position, leading to potential inefficiencies and safety hazards.
Innovation Solution
A tiller arm arrangement that automatically adjusts its length based on the platform's position, with two distinct lengths (L for walking and X for riding) to ensure optimal ergonomic and safe handling, utilizing either electrical power units or mechanical means like spring and pulley assemblies for length alteration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the tiller arm length is fixed, then the device complexity is reduced, but the adaptability to different user positions (walking vs. riding) deteriorates
Solution Approach 1:
The tiller arm length is made dynamically adjustable based on the platform position. When the platform is in the first position (storage), the tiller arm extends to a first length; when the platform is in the second position (use), the tiller arm retracts to a second length. This dynamic adjustment allows the system to adapt to different operational conditions without requiring complex manual intervention.
Solution Approach 2:
The system automatically adjusts the tiller arm length based on the platform position detection, eliminating the need for manual intervention. The control unit receives signals from position sensors and automatically actuates the length adjustment mechanism, making the system self-regulating and reducing operational complexity.
2Adaptability or versatility
If the tiller arm length is manually adjusted, then the adaptability to user position is improved, but the ease of operation deteriorates due to additional user actions required
Solution Approach 1:
The system automatically adjusts the tiller arm length based on the platform position detection, eliminating the need for manual intervention. The control unit receives signals from position sensors and automatically actuates the length adjustment mechanism, making the system self-regulating and reducing operational complexity.
Solution Approach 2:
The system incorporates position sensors that detect the platform position and provide feedback to the control unit. Based on this feedback, the control unit automatically adjusts the tiller arm length to the appropriate setting, creating a closed-loop control system that ensures optimal configuration without user intervention.
3Device complexity
If the tiller arm length is not optimized for platform use, then the device complexity is reduced, but the user safety and ergonomics deteriorate
Solution Approach 1:
The tiller arm length is made dynamically adjustable based on the platform position. When the platform is in the first position (storage), the tiller arm extends to a first length; when the platform is in the second position (use), the tiller arm retracts to a second length. This dynamic adjustment allows the system to adapt to different operational conditions without requiring complex manual intervention.
Solution Approach 2:
The system incorporates position sensors that detect the platform position and provide feedback to the control unit. Based on this feedback, the control unit automatically adjusts the tiller arm length to the appropriate setting, creating a closed-loop control system that ensures optimal configuration without user intervention.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances user safety and ergonomics by eliminating the need for manual length adjustments, optimizing tiller arm length for different user positions, reducing fatigue, and improving maneuverability and safety for both the user and others, with the added benefit of longer working periods without electrical power consumption in mechanical embodiments.
Implementation Method 1
the length of the tiller arm is altered by an electrical power unit
Implementation Method 2
the length of the tiller arm is altered by mechanical means, such as a spring and pulley assembly
Implementation Method 3
the length of the tiller arm is altered by mechanical means, such as a spring and pulley assembly
Data Source
Figure 1~2
Figure 3~4
Figure 3a~4a
AI summary
Arrangement at a truck, comprising a tiller arm for controlling the truck, a user platform on which a user can be positioned when travelling with said truck, said tiller arm is arranged to have a length which can alter, said platform is arranged to have two main positions, one storage position which is substantially vertical, and one usage position which is substantially horizontal, and said tiller arm length is linked to the position of the platform. An industrial truck comprising said arrangement is also disclosed.