Stacker Crane Regeneration Resistor Placement
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Solution Overview
Problem
The arrangement of regeneration resistors in stacker cranes has not been sufficiently examined, leading to potential inefficiencies in managing regenerative energy during motor operations.
Innovation Solution
A stacker crane design where a regeneration resistor is strategically positioned on a second portion of a mast, separate from the control machine fixed to the first portion, allowing for effective consumption of regenerative energy without interfering with the control mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the regeneration resistor is disposed close to the control machine for compact arrangement, then the device complexity is reduced, but the heat generated by the regeneration resistor may interfere with the control machine operation
Solution Approach 1:
The mast is divided into a first portion and a second portion, with the control machine fixed to the first portion and the regeneration resistor fixed to the second portion. This segmentation spatially separates heat-generating components from heat-sensitive components, resolving the contradiction between compact arrangement and heat interference prevention.
2Object-affected harmful factors
If the regeneration resistor is disposed separately from the control machine to avoid heat interference, then the heat interference is reduced, but the device complexity and assembly burden increase
Solution Approach 1:
The mast is segmented into portions that can be assembled separately, with the control machine and regeneration resistor fixed to different portions. This allows independent assembly of components, reducing the burden of on-site work while maintaining spatial separation to prevent heat interference.
Solution Approach 2:
The separation of the control machine and regeneration resistor is achieved along the vertical dimension of the mast structure, utilizing the height direction to space components apart without increasing horizontal footprint, thus maintaining compact ground arrangement while preventing heat interference.
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
This configuration enables the stacker crane to efficiently manage regenerative energy, reducing the risk of heat interference with control machines and improving operational stability and safety.
Implementation Method 1
a regeneration resistor configured to consume regenerative energy caused when at least one of the raising and lowering motor and the traveling motor carries out regeneration operation
Data Source
AI summary
To achieve a stacker crane in which a regeneration resistor is disposed in an appropriate position. The stacker crane (1) includes a carrier section (10), masts (20) provided upright on the carrier section, and a carriage (30) capable of being raised and lowered with respect to the masts, the masts each having at least a first portion (21) and a second portion (22) disposed on the first portion, a control machine being fixed to the first portion, a regeneration resistor being fixed to the second portion.