Overhead Transport Vehicle Slider Guide for Balanced Lateral Extension
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Solution Overview
Problem
The linear guide in existing overhead transport vehicles can become offset in the lateral extension direction, leading to unbalanced loads and hindering stable travel, especially when carrying articles, and fixing it at the center reduces the movable range of the slider.
Innovation Solution
Incorporating a first transmission that regulates the position of the linear guide relative to the base and moves it in sync with the slider's extension, using wrapping transmission members to maintain balance and prevent offset loads while ensuring a long lateral extension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the linear guide is made movable in the lateral extension direction relative to the base and slider, then the lateral extension range of the slider is increased, but the linear guide may become offset from the center of the base causing unbalanced loads
Solution Approach 1:
A transmission mechanism is introduced as an intermediary between the slider and the linear guide. This transmission regulates the position of the linear guide based on the slider's extension state, allowing the linear guide to move in coordination with the slider while maintaining proper alignment. The transmission acts as a mediator that couples the motion of the slider with the position regulation of the linear guide, resolving the contradiction between extended range and load balance.
Solution Approach 2:
The position of the linear guide is dynamically adjusted based on the extension state of the slider. When the slider is fully retracted, the transmission regulates the linear guide to a first position centered on the base. When the slider is extended, the transmission allows or causes the linear guide to move to a second position that maintains proper alignment. This dynamic parameter change resolves the contradiction by adapting the linear guide's position to the slider's state.
2Stability of the object's composition
If the linear guide is fixed at the center of the base, then the load balance is maintained, but the movable range of the slider is reduced
Solution Approach 1:
The system transitions from a static linear guide position to a dynamic one. The linear guide is no longer fixed at a single center position but can dynamically adjust between a first position (when slider is retracted) and a second position (when slider is extended). This dynamic capability allows the system to maintain load balance at each state while enabling full slider extension range.
Solution Approach 2:
The transmission mechanism serves as an intermediary that couples the slider's motion with the linear guide's position adjustment. As the slider extends or retracts, the transmission mediates the corresponding position change of the linear guide, ensuring that the linear guide remains properly aligned with the base regardless of the slider's extension state. This intermediary mechanism resolves the contradiction by enabling coordinated motion.
3Length of moving object
If the linear guide moves to a position significantly offset from the center of the base when the slider is not extended, then the lateral extension range is maintained, but offset loads are applied to the lateral extender
Solution Approach 1:
The transmission mechanism provides feedback-based position regulation of the linear guide. Based on the slider's extension state, the transmission regulates the linear guide to appropriate positions: when the slider is retracted, the linear guide is regulated to a centered first position; when the slider is extended, the linear guide is regulated to a second position that maintains alignment. This feedback control prevents offset loads by ensuring the linear guide is properly positioned in each state.
Solution Approach 2:
The position parameter of the linear guide is dynamically changed based on the slider's extension parameter. The system monitors or detects the slider's state and accordingly adjusts the linear guide's position to maintain proper alignment. This parameter coupling ensures that the linear guide never becomes significantly offset from the base center, preventing harmful offset loads while maintaining full extension capability.
Data Source
AI summary
[Problem] To suppress application of offset loads in a lateral extender even in a state where a slider is not extended laterally, while ensuring a long lateral extension amount of the slider.[Means to Solve Problem] An overhead transport vehicle 1 includes: a base 10 provided on a main body 4; a slider 20 provided with a transfer device 8 and arranged on a lower face side of the base 10; a first linear guide 40 that is provided between the base 10 and the slider 20, is movable in a lateral direction D relative to the base 10 and the slider 20, and supports the slider 20 so as to allow it to extend laterally relative to the base 10; and a first transmission 50 that regulates a position of the first linear guide 40 when the slider 20 is not moving in the lateral extension direction relative to the base 10, and that moves the first linear guide 40 in the lateral extension direction when the slider 20 is moving in the lateral extension direction relative to the base 10.