Rotatable Fork Assembly for Irregular Load Handling
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Solution Overview
Problem
Conventional forklifts face limitations in lifting and transporting abnormally shaped or sized loads due to restricted fork movement and access, particularly when loads have narrow gaps or are positioned in a way that standard forks cannot reach underneath.
Innovation Solution
A fork assembly attachment for forklifts that includes adjustable, rotatable blades and extensions, allowing for side lifting and closer load positioning, with the ability to be remotely operated from the forklift vehicle, enabling the lifting and transport of loads with minimal separation and irregular shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional forks are used with fixed structure, then the forklift can lift standard loads, but it cannot handle abnormally shaped or sized loads with narrow gaps or restricted access
Solution Approach 1:
The fork assembly incorporates movable and adjustable components including telescopic forks that can extend and retract, and rotatable blades that can change orientation. This dynamic structure allows the fork assembly to adapt to different load configurations, narrow gaps, and restricted access areas, directly resolving the contradiction between versatility and structural complexity by making the complexity functional and adaptable rather than fixed.
Solution Approach 2:
The fork assembly is divided into separate functional modules: telescopic fork sections, rotatable blades, extensions, and a mounting body with multiple attachment points. This segmentation allows each component to be optimized independently for specific functions while collectively providing the versatility needed to handle diverse loads, managing the complexity through modular design rather than monolithic construction.
2Length of moving object
If forks are extended to reach farther loads, then the forklift can access loads at greater distances, but the force acting on the fork mounting area increases significantly
Solution Approach 1:
The telescopic fork design allows the fork length to be adjusted dynamically based on the specific loading requirements. The fork can be extended only when needed to reach farther loads, and retracted when not required, thereby minimizing the force on the mounting area during normal operations while maintaining the capability to extend when necessary.
Solution Approach 2:
The system allows preliminary positioning of the forklift and load before extending the forks. By approaching the load with the forks in a retracted state and only extending them when positioned correctly, the system minimizes the force applied to the mounting area during the lifting operation while still achieving the necessary reach.
3Productivity
If the forklift operates in tight spaces with minimal separation between loads, then productivity increases, but standard forks cannot access loads due to narrow gaps
Solution Approach 1:
The rotatable blades can change their orientation dynamically to navigate around obstacles and access loads in tight spaces. The blades can rotate to positions that clear other loads or structures, allowing the fork assembly to maneuver through narrow gaps and access loads that would be inaccessible to fixed forks, thereby maintaining productivity while improving ease of operation in constrained environments.
Solution Approach 2:
The separable and movable components of the fork assembly, including the telescopic sections and rotatable blades, allow the system to configure itself to fit through narrow spaces. Each segment can be positioned independently to navigate around obstacles, enabling the forklift to operate efficiently in tight spaces with minimal separation between loads.
4Length of moving object
If fork extensions are added to reach farther, then the forklift can lift loads at greater distances, but the device complexity increases
Solution Approach 1:
The extensions and telescopic mechanisms serve multiple functions: they extend the fork reach for farther loads, provide structural support for the telescopic sections, and can be configured for different operating conditions. This multi-functionality reduces the need for separate components for each function, thereby managing the overall device complexity while achieving greater effective fork reach.
Data Source
AI summary
A fork assembly can include multiple forks configured to surround a load. Multiple attachments can be made on the forks to couple to straps for support a load. The fork assembly can further include multiple fork extensions having end attachments to couple to straps for pulling on the load. Alternatively, the fork assembly can include multiple fork lifters having blades rotatable between a non-lift position and a lift position. The fork extensions can also have blades rotatable between a non-pullable position and a pullable position. The blade rotation can be performed by a remote rotate mechanism by an operator operating the fork assembly.