Operator Cab Actuated Front Door Pivoting Mechanism
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Solution Overview
Problem
Construction machines, such as skid steers, often have operator cabs with small interior spaces and obstructive front doors that hinder open door operations, cramping the space and obstructing the operator when the door folds or opens into the cabin.
Innovation Solution
An operator cab with a movable front door and an associated actuator system that pivots the door about a pivot point, allowing it to move from a closed to an open position alongside the side panels, secured by guide tracks, enabling unobstructed ingress and egress while maintaining a clear interior space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the front door folds or opens into the interior space of the cabin, then the door can be opened, but it cramps operations inside the small cab and creates an obstruction for the operator
Solution Approach 1:
The door is moved from a conventional hinged opening that swings into the cab interior to a telescopic mechanism that moves the door horizontally along guide tracks. This dimensional change in door movement trajectory eliminates interior space occupation while maintaining door opening functionality.
Solution Approach 2:
The door is extracted from the traditional fixed hinged position and converted into a movable telescopic structure that can be completely removed from the cab interior space. The door assembly includes tracks and actuators that allow it to be positioned outside the working interior volume when open.
2Ease of operation
If the door opens into the interior space, then the door can be opened for access, but it further cramps operations inside the small cab
Solution Approach 1:
The door movement is changed from a vertical/swinging motion into the cab to a horizontal telescopic motion along guide tracks. This dimensional change allows the door to open for access without occupying interior space, thereby maintaining operational efficiency within the confined cab environment.
Data Source
AI summary
An operator cab is mounted on a chassis of a mobile work vehicle. The cab includes a back panel, a pair of opposing side panels, and a roof panel. The side panels and the roof panel each have a first edge proximate the back panel and a second edge opposite the first edge, the second edges defining a door opening. A door is proximate the door opening and movable to a closed position defining a front barrier or an open position alongside the cab. A drive system is connected to the door to move the door about a pivot point near the door opening to an open position from the closed position to allow for an operator to ingress and egress through the door opening. The door when in the open position being secured between a boom arm of the mobile work vehicle and alongside the at least one of the side panel of the cab.