Hinged Tail Hoist with Dual Reeving for Low Clearance
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Solution Overview
Problem
Existing container handling systems face challenges in loading and unloading containers in situations with low overhead clearance and require significant tilt frame elevation, which limits their use indoors and in spaces with limited ceiling height, and are not durable enough to handle various container loads efficiently.
Innovation Solution
A tilt frame transport vehicle with a hinged and hydraulically actuated end member, known as a 'tail,' that allows for loading and unloading without extreme tilt angles, combined with a dual hydraulic cylinder reeving system and pulley member to facilitate container movement, reducing the need for extensive tilt frame elevation and enhancing durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the tilt frame is raised to a significant height for loading and unloading containers, then the loading and unloading operation can be performed, but the system cannot be used indoors or in situations where the ceiling height is low
Solution Approach 1:
The tilt frame is segmented into a main frame portion and an extendable end portion that can telescopically slide out. This segmentation allows the distal end of the frame to be extended forward, reducing the need to raise the entire frame to significant heights for loading and unloading operations, thereby enabling indoor use while maintaining operational capability
Solution Approach 2:
The extendable end portion is designed to be moveable, telescopically sliding out of the main frame to extend the length of the frame when needed. This dynamic adjustment allows the system to adapt its configuration based on operational requirements, enabling low-height loading/unloading for indoor use while maintaining full-length capability for outdoor operations
2Ease of operation
If the tilt frame is raised to a significant height for loading and unloading containers, then the loading and unloading operation can be performed, but the system requires more floor space for loading and unloading
Solution Approach 1:
By segmenting the tilt frame into main frame and extendable end portion, the system can perform loading and unloading operations with the frame in a more horizontal position, reducing the vertical space requirements and allowing operations in confined spaces with smaller footprints
3Adaptability or versatility
If extendable end portions are added to the tilt frame to enable low-height operations, then indoor use becomes possible, but the system has durability and strength problems
Solution Approach 1:
The segmentation into main frame and extendable end portion is designed with proper structural support and connection mechanisms that maintain durability and strength while enabling the extendable functionality required for indoor operations
Solution Approach 2:
The extendable end portion and its connection to the main frame utilize composite structural design with appropriate materials and reinforcement to ensure that the moveable, extendable components maintain the necessary durability and strength to handle container loads reliably
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables faster and more versatile container handling in various situations, including low-clearance spaces, with improved durability and reduced footprint, allowing for efficient loading and unloading without the necessity of extreme tilt frame angles, thereby increasing operational efficiency and reducing costs.
Implementation Method 1
hydraulic cylinders are typically used to move the cable about a fixed sheave attached to the vehicle hoist frame
Implementation Method 2
the cable, which is wrapped around sheaves connected to the cylinders, is at its longest affective length
Implementation Method 3
As the cylinders extend, the effective length of the cable continuously shortens as it wraps around the cylinder sheaves
Implementation Method 4
Hydraulic cylinders are used to raise and lower the tilt frame relative to the vehicle frame
Implementation Method 5
the frame upon which the containers are placed is pivotally connected near or at the distal end of the vehicle frame
Implementation Method 6
The tilt frame is actuated during loading and unloading of containers to assist in these procedures
Data Source
AI summary
A container handling system and method for a wheeled transport vehicle is disclosed that is capable of loading and unloading containers, particularly in locations where the overhead height is limited. A hinged tail member at the rear end of the elongated body (a/k/a tilt frame member) is rotated adjacent the ground allowing the containers to be loaded and unloaded without rotating the tilt frame to its maximum height. A cable reeving arrangement, such as a dual reeving arrangement, can be utilized to load and unload the containers.