LED Strip Lighting on Industrial Truck Lifting Cylinders
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Solution Overview
Problem
Existing industrial truck masts with integrated lighting devices face visibility restrictions and damage from traction mechanisms, as conventional headlights obstruct the operator's view and are prone to damage due to their placement on the mast.
Innovation Solution
The integration of LED strips on the lifting cylinders, arranged in a longitudinal configuration to minimize obstruction and protect against traction mechanism movements, providing improved illumination with adjustable orientations and easy retrofitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional headlights are mounted on the lifting mast to illuminate the work area, then the work area is illuminated, but the operator's visibility through the lifting frame is obstructed
Solution Approach 1:
The lighting function is extracted from the lifting mast structure and transferred to the traction element system. The LED lights are mounted on the traction element itself rather than on the mast, removing the source of visual obstruction while maintaining illumination capability.
Solution Approach 2:
The lighting is repositioned from a fixed position on the mast to a moving component (traction element) that operates in a different spatial dimension. This allows the light source to be positioned in the shadow area between the mast profiles, eliminating obstruction while maintaining work area illumination.
2Illumination intensity
If headlights are mounted on the lifting mast, then the work area is illuminated, but the headlights are prone to damage from traction mechanism movements
Solution Approach 1:
The lighting device is merged with the traction element system. The LED lights are integrated onto the traction element structure, so they move together as a single unit. This eliminates relative movement between the light source and its mounting structure, preventing damage while maintaining illumination.
3Illumination intensity
If spotlights are arranged on the lifting mast to provide illumination, then the work area is lit, but the operator's view of the load-handling device is further impaired
Solution Approach 1:
The lighting function is extracted from the mast structure and relocated to the traction element. This removes additional light sources from the mast where they would obstruct the operator's view, while maintaining work area illumination through the relocated lighting system.
4Reliability
If LED strips are arranged on the lifting cylinder, then the lighting is protected from traction element movements, but the mounting complexity increases
Solution Approach 1:
The LED strip mounting is merged with the lifting cylinder structure. The LED strips are directly attached to the lifting cylinder, which is part of the existing mechanical system. This utilizes existing structural elements for mounting, reducing the need for additional complex mounting structures while providing protection from traction element movements.
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
Enhances operator visibility and mast durability by distributing light effectively, reducing glare, and allowing for various lighting functions such as load status indication and cornering lights, while being easy to maintain and install.
Implementation Method 1
The lighting device consists of at least one LED strip (21a, 21b, 22a, 22b) with at least one LED light
Data Source
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AI summary
The invention relates to a lifting frame (1) of an industrial truck with a mast (2) and at least one raising and lowering mast component formed by a load handling device (4) and/or by at least one extension mast (3), wherein at least one lifting cylinder (5a; 5b) and at least one traction element (6a; 6b) are provided for raising and lowering the mast component, wherein the mast (2) has two laterally spaced vertical mast profiles (2a, 2b) and the at least one traction element (6a; 6b) is arranged on a lateral outer surface (A1; A2) of the vertical mast profile (2a; 2b), wherein the lifting frame (1) is provided with a lighting device (20). According to the invention, the lighting device (20) consists of at least one LED strip (21 a; 21b; 22a; 22b) with at least one LED light which is arranged on the lifting cylinder (5a; 5b).