Swiveling Work Machine Support Frame for Seat Protector
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Solution Overview
Problem
Conventional swiveling work machines face challenges in supporting the operator's seat protector with sufficient strength while maintaining a compact upper structure, as existing frame constructions lack the necessary strength and stability, particularly when positioned near the engine.
Innovation Solution
A high-strength four-post type support frame with a rectangular shape in plan view is mounted on the swivel deck, featuring rear post portions connected by a rear beam member and attaching portions for the operator's seat protector, along with upper beam portions and connecting members to form a sturdy frame without stress concentration, allowing easy assembly and detachment of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a three-post construction support frame is used, then the device complexity is reduced, but the strength and stability of the frame construction deteriorates
Solution Approach 1:
The support frame is divided into multiple post portions (front right, front left, rear right, rear left) distributed around the engine, with each post providing localized support. This segmentation allows the frame to achieve high strength and stability without requiring an overly complex monolithic structure.
2Volume of moving object
If the operator's seat protector is positioned in the vicinity of the engine to form a compact upper structure, then the volume of the upper structure is reduced, but the ease of supporting the protector with sufficient strength deteriorates
Solution Approach 1:
The operator's seat protector is merged with the support frame structure, where the rear post portions of the frame directly support the protector. This integration allows the compact upper structure to maintain sufficient support strength for the protector without requiring additional external framing.
3Device complexity
If a four-post type operator's seat protector with rear post portions affixed directly to the swivel deck frame is used, then the device complexity is reduced, but the strength of attachment deteriorates
Solution Approach 1:
The support frame serves multiple functions: it supports the engine, provides structural framework for the upper structure, and simultaneously serves as the attachment structure for the operator's seat protector. The rear post portions of the frame double as support elements for both the frame itself and the protector, achieving high attachment strength without increasing overall complexity.
Data Source
AI summary
A swiveling work machine includes a swivel deck, an engine and an operator's seat which are mounted on the swivel deck and a protector for the operator's seat mounted erect on the swivel deck. The swivel deck mounts, at a rear portion thereof, a support frame having four post portions disposed around the engine. Two rear post portions of the support frame have upper ends thereof connected via a rear beam member. The rear beam member includes an attaching portion for the operator's seat protector to which portion the protector is attached.