Forklift Towing Attachment Chassis Force Transfer
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Solution Overview
Problem
Existing towing attachments for forklifts often result in damage to the fork assembly due to direct connection methods, and operator safety is compromised when towing in reverse.
Innovation Solution
A towing attachment with a main frame mounted on the forklift's fork assembly, featuring a towing hitch assembly and articulated link elements that transfer towing forces to the forklift's chassis, minimizing stress on the fork assembly and allowing for safe, forward-facing operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the tow ball is directly connected to the fork tine, then the structure is simple and cost-effective, but the fork assembly can be torn from its mount under certain loading conditions
Solution Approach 1:
The patent introduces a tow bar as an intermediary component between the fork assembly and the tow ball. This tow bar transfers towing forces away from the fork-tine connection point to a dedicated mounting location on the forklift body, preventing the fork assembly from being torn while maintaining structural integrity. The intermediary element redistributes the load path to protect vulnerable components.
2Force
If the tow ball is mounted on a frame (jib) connected to fork tines, then towing capacity is increased, but the fork tine mounting frame can be torn away or damaged when towing an article
Solution Approach 1:
The tow bar serves as a mediator that decouples the high-force towing operation from the vulnerable fork tine mounting frame. By routing towing forces through the tow bar to a stronger mounting location on the forklift body, the system maintains high towing capacity while protecting the fork assembly from damage.
Solution Approach 2:
The patent extracts the towing force transmission function from the fork assembly and relocates it to the forklift body. The tow bar carries the towing forces away from the fork tines, allowing the fork assembly to focus solely on its primary function of supporting and transporting loads without bearing the additional stress of towing operations.
3Force
If the tow ball is connected directly to the rear of the forklift, then towing capacity is improved, but the operator faces in the opposite direction to the towed article causing safety issues
Solution Approach 1:
The tow bar is designed as a dynamic component that can pivot and adjust its angle relative to the forklift body. This allows the towing attachment to maintain proper orientation and force transmission while enabling the operator to face forward in the direction of travel, improving both safety and operational comfort.
Data Source
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AI summary
A towing attachment for a for a forklift is described. The towing attachment includes a main frame for locating the attachment on a fork assembly of a forklift, a towing hitch assembly on the main frame for connection to a towed article; and one or more connectors mounted on the main frame for connecting the main frame to a forklift body or forklift chassis wherein the one or more connectors are adapted to transfer towing forces on the towing attachment to the forklift body or forklift chassis.