Machine Operator Cabin Ingress Egress Arrangement
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Solution Overview
Problem
Traditional ingress and egress arrangements for machines, such as construction equipment, often require operators to navigate around doors or through hazardous areas, lacking optimized paths and creating safety concerns.
Innovation Solution
The implementation of a rotatable door and multi-tiered walkway system with a ladder that can switch between stowed and access positions, providing multiple ingress/egress points and protected access to the operator cabin, allowing for safer and more efficient entry and exit while avoiding dangerous areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional hinged door arrangement is used, then the door can be closed to secure the operator cabin, but the operator must go around the door to access the machine, creating an inefficient and potentially dangerous ingress/egress path
Solution Approach 1:
The operator cabin is divided into multiple access points: a traditional door for secure entry and additional openings at the front and rear of the cabin. This segmentation allows operators to choose different ingress/egress paths based on their needs, avoiding the requirement to navigate around the main door and eliminating exposure to dangerous track areas.
Solution Approach 2:
Walkways are introduced as intermediary structures that connect the ground to multiple access points on the operator cabin. These walkways provide safe, protected pathways that bypass hazardous areas such as tracks, allowing operators to reach the cabin through multiple openings without exposing themselves to dangerous zones.
2Reliability
If the door is positioned to close the opening between posts, then security is improved, but access to the machine requires navigating around the door which increases the ingress/egress path length
Solution Approach 1:
The cabin structure is segmented to include multiple access openings in addition to the main door opening. This allows security to be maintained at the primary door while providing alternative, shorter access paths through other openings, thereby reducing the time required for operators to enter or exit the machine.
Solution Approach 2:
Access to the operator cabin is provided from multiple spatial dimensions - not only through the side door but also through front and rear openings. This multi-dimensional access approach allows operators to choose the most efficient entry/exit point based on their location, reducing the time and distance required for ingress and egress while the main door remains secured.
3Ease of operation
If multiple ingress/egress points are provided, then operator safety and efficiency are improved, but the structural complexity of the operator cabin increases
Solution Approach 1:
The operator cabin structure is segmented into multiple modular openings distributed at different locations (front, rear, and side). Each opening can be independently configured and secured, allowing multiple access points without requiring a complete redesign of the entire cabin structure. This modular approach increases accessibility while managing structural complexity through standardized, repeatable elements.
Data Source
AI summary
An ingress/egress arrangement for a machine comprises an operator cabin and a walkway system outside the operator cabin. The operator cabin can include a plurality of posts, including first post and a second post, and a door rotatably coupled to the first post so as to be movable between at a fully open position and at a fully closed position. An opening in the operator cabin between the first post and the second post defines a first operator ingress/egress point. The walkway system provides operator access to inside the operator cabin via the door and the opening, and provides operator access to outside the operator cabin. The door, in the fully open position, can restrict operator access toward a front of the machine and can allow operator access simultaneously to the walkway system and a second operator ingress/egress point.