Stacker Crane Lower Frame Weight Distribution
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Solution Overview
Problem
Conventional stacker cranes have expensive lower frames due to the heavy weight distribution, which requires strong connecting frames, and complex guiding systems that increase manufacturing costs.
Innovation Solution
The stacker crane design includes a lower frame with front and rear wheel support frames connected via a connecting frame, where the support rods are mounted on flanges and supported by wheel support frames, distributing the weight to prevent heavy loads on the connecting frame, allowing for a cheaper and simpler manufacturing process while maintaining accurate rod positioning and stable platform guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the front and rear support rods are mounted on the connecting frame, then the connecting frame provides structural support, but the connecting frame becomes expensive and difficult to manufacture due to the heavy weight it must bear
Solution Approach 1:
The patent divides the support function into two separate components: the wheel support frames bear the vertical weight loads, while the connecting frame provides only positional connection and guidance. This segmentation allows each component to be optimized for its specific function, reducing the overall manufacturing cost.
Solution Approach 2:
The patent extracts the weight-bearing function from the connecting frame and transfers it to the wheel support frames. The connecting frame is left with only the guidance function, which significantly reduces its structural requirements and manufacturing cost.
2Ease of operation
If extended guide rails are provided on the wheel support frames to guide the platform, then platform guidance is achieved, but the guiding system becomes complicated and increases manufacturing cost
Solution Approach 1:
The patent merges the guidance function into the existing support rod structure. The support rods serve dual purposes: bearing vertical loads and providing guidance surfaces for the platform. This eliminates the need for separate guide rails and simplifies the overall guiding system.
Solution Approach 2:
The support rods are designed to perform multiple functions simultaneously: structural support, load bearing, and platform guidance. This multi-functionality reduces the number of separate components needed and simplifies the guiding system.
Data Source
AI summary
A stacker crane includes a lower frame having running wheels running along a rail at both front and rear end portions thereof. The lower frame has a connecting frame that connects front and rear wheel support frames for supporting the running wheels to each other. The front support rod is held by a flange at its lower end surface, which is formed at the lower end portion of the front side wheel support frame. The side surface of the front support rod is connected and supported by the front side wheel support frame. The rear support rod is held by a flange, which is formed at the lower end portion of the rear side wheel support frame at its lower end surface and the side surface of the rear support rod is connected and supported by the rear side wheel support frame 24.