Side-shift Drive Vibration Damping for Forklifts
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Solution Overview
Problem
Industrial trucks, particularly high-bay three-sided order picking trucks, experience significant transverse vibrations when operating on uneven surfaces, which can be uncomfortable for operators and hinder pallet storage and retrieval processes, and existing vibration-reducing solutions are complex and time-consuming to implement.
Innovation Solution
A vibration-reducing device is integrated between the side push frame and side push device, utilizing a controllable electric motor with a damping system that includes a friction clutch and adjustable spring arrangement to decouple the side push device's movement from the side push frame, allowing for delayed and braked acceleration of vibrations, converting kinetic energy into heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If existing vibration-reducing solutions are implemented, then transverse vibrations are reduced, but assembly effort and implementation time increase significantly
Solution Approach 1:
The patent introduces a vibration-reducing device as an intermediary component between the side push frame and side push device. This device includes a damping element and a spring element that act as mediators to absorb and reduce transverse vibrations without requiring complex structural modifications to the existing industrial truck system.
Solution Approach 2:
The vibration-reducing device is segmented into distinct functional components: a damping element for reducing vibrations and a spring element for providing elastic support. This segmentation allows for easier assembly and maintenance while achieving the desired vibration reduction effect.
2Productivity
If the industrial truck operates on uneven surfaces, then productivity is maintained, but transverse vibrations increase causing operator discomfort and operational hindrance
Solution Approach 1:
The vibration-reducing device provides beforehand cushioning by pre-installing damping and spring elements that are ready to absorb transverse vibrations before they propagate through the system. This allows the industrial truck to maintain productivity on uneven surfaces without experiencing the full impact of vibrations.
3Object-affected harmful factors
If complex vibration-reducing solutions are implemented, then vibration reduction effectiveness improves, but device complexity and retrofitting time increase
Solution Approach 1:
The patent extracts the vibration reduction function from the main structural components and implements it through a separate, dedicated vibration-reducing device. This extraction allows for simpler integration into existing systems without complicating the overall device architecture.
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
This solution effectively reduces transverse vibrations with minimal assembly effort and operator discomfort, enhancing operational efficiency and productivity by allowing continuous operation on uneven surfaces without the need for complex retrofitting.
Implementation Method 1
a damping element (35) effective, in a vibration-reducing mode of operation of the sideshift drive device, to reduce transverse vibrations with vibration components transverse to the main direction of travel of the industrial truck by friction
Implementation Method 2
a spring element (34) arranged between the sideshift device (38) and the sideshift frame (34) and effective, in the vibration-reducing mode of operation of the sideshift drive device, to reduce transverse vibrations with vibration components transverse to the main direction of travel of the industrial truck
Data Source
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AI summary
The invention relates to a forklift truck, in particular a three-way forklift, comprising a lifting mast (8), a side-shift frame (34) movable up and down on the lifting mast (8), a side-shift device (38) which is mounted on the side-shift frame (34) so as to be movable laterally transversely to the main direction of travel (G) of the forklift truck, such that it has a degree of freedom of movement laterally transversely to the main direction of travel (G) of the forklift truck along the side-shift frame (34), a load-bearing device (36) arranged on the side-shift device (38) which, together with the side-shift device (38), is movable laterally transversely to the main direction of travel (G) of the forklift truck using its degree of freedom of movement, and a side-shift drive device (52) controllable by means of a control unit of the forklift truck for the joint movement of the side-shift device (38) and the load-bearing device (36) along the side-shift frame (34).and with a device for reducing lateral vibrations, namely vibrations with vibration components transverse to the main direction of travel (G) of the industrial truck, wherein the industrial truck is characterized in that the side-shift drive device (52) can be operated in a vibration damping mode as a component of the device for reducing vibrations, wherein in the vibration damping mode it enables vibration reduction movements of the side-shift device (38) relative to the side-shift frame (34).