Elevator Car Movable Roof Deck for Cargo
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Solution Overview
Problem
Existing solutions for transporting people and goods during building construction are not optimized for efficiency, safety, and convenience, particularly in handling large construction materials.
Innovation Solution
A new elevator car design with a vertically movable roof deck that can change positions to accommodate both passengers and large goods, featuring a displaceable cover panel, railings, and an actuating arrangement for easy conversion between normal and cargo use positions, along with an elevator control system for safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the elevator car uses a fixed transport space design, then the structure is simple and reliable, but it cannot efficiently transport both passengers and large goods
Solution Approach 1:
The roof deck is made movable between a first position (for passenger transport) and a second position (for cargo transport), transforming the static transport space into a dynamic one that adapts to different transport needs. This allows the same elevator car to efficiently serve both passenger and large goods transport functions.
2Volume of moving object
If the transport space height is increased for large goods, then cargo capacity improves, but passenger safety and comfort deteriorate
Solution Approach 1:
The roof deck position is dynamically adjusted based on transport mode: in the first position it provides adequate headroom for passenger safety and comfort, while in the second position it increases the transport space height for large goods. The control system ensures the roof deck is in the appropriate position before allowing operation, maintaining safety while enabling versatility.
3Productivity
If separate elevator cars are used for passengers and goods, then transport efficiency for each function is optimized, but the overall system complexity and cost increase
Solution Approach 1:
The elevator car is designed with multi-functionality, where the same car structure serves both passenger transport and large goods transport functions. The movable roof deck enables the car to adapt its configuration for different transport needs, eliminating the requirement for separate specialized elevator cars and reducing overall system complexity while maintaining high transport efficiency for both functions.
4Adaptability or versatility
If the roof deck is made movable for cargo use, then transport versatility improves, but the structural strength and stability may worsen
Solution Approach 1:
The roof deck is designed as a movable component that can be positioned in two stable states (first position for passengers, second position for cargo). The support mechanisms and control system ensure the roof deck maintains adequate structural strength and stability in both positions, while enabling the structural configuration to dynamically adapt to different transport mode requirements.
Data Source
AI summary
An elevator car includes a roof deck; a plurality of walls; a floor; one or more doors; and a transport space bordered by the roof deck, the plurality of walls, the floor, and at least one openable and closable door for allowing access to said transport space. The roof deck is vertically movable from a first normal use position upwards to a second cargo use position for increasing the height of the transport space, and from the second position downwards back to the first position for reducing the height of the transport space. An elevator and a method implementing the elevator car are also disclosed.