Industrial Truck Load Frame Structure for Battery Space and Rigidity
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Solution Overview
Problem
Current industrial trucks, particularly low-lift and double stacker trucks, face challenges in achieving a stable load frame design that balances weight, rigidity, and cost efficiency while optimizing space for battery placement.
Innovation Solution
The load frame is redesigned using a solid metal plate with a predefined thickness, eliminating the typical battery box structure and integrating the battery in the drive part, and reinforced with additional plates if necessary, ensuring direct force transmission without deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a box-shaped battery holder structure is used in the load frame, then the battery can be accommodated, but the vehicle length increases and structural weight increases
Solution Approach 1:
The patent merges the battery holder function with the load frame structure itself. The load frame is designed with an integrated recess or cavity that directly accommodates the battery, eliminating the need for a separate box-shaped battery holder. This integration reduces the overall vehicle length while maintaining battery accommodation capability.
Solution Approach 2:
The load frame is designed to serve multiple functions simultaneously: it provides structural support for the load-carrying components, incorporates battery accommodation space, and maintains structural rigidity. This multi-functionality eliminates the need for separate dedicated battery holder structures, reducing overall vehicle length.
2Volume of moving object
If a box-shaped battery holder structure is used in the load frame, then the battery can be accommodated, but the structural weight increases
Solution Approach 1:
By integrating the battery accommodation function into the load frame structure itself, the patent eliminates the need for additional separate battery holder components. This merging reduces the total material required and thus decreases the overall structural weight while maintaining both load-carrying and battery accommodation functions.
Solution Approach 2:
The load frame is designed with localized modifications such as recesses, cavities, or optimized thickness variations in specific areas to accommodate the battery. Rather than adding a complete separate structure, only local areas are modified to create battery space, minimizing additional material usage and weight.
3Ease of manufacture
If material usage is reduced for a stable load frame, then costs decrease, but structural stability and rigidity may be compromised
Solution Approach 1:
The patent applies local quality by optimizing material distribution within the load frame structure. Thicker sections are placed where high structural strength and rigidity are needed (such as load-bearing areas), while thinner sections are used in areas where lower stress occurs. This localized material optimization reduces overall material usage and cost while maintaining structural stability.
Solution Approach 2:
The load frame may utilize composite material constructions or hybrid material approaches, combining different materials with complementary properties to achieve optimal strength-to-weight and cost ratios. This allows for reduced material usage overall while maintaining required structural performance through strategic material selection.
Data Source
AI summary
An industrial truck includes a drive part with a drive frame and a load part. The load part includes a lift frame having a load frame, which includes a plate, a load-carrying means connected to the plate, and at least one bearing head configured to receive a lift cylinder. The at least one bearing head is connected to the plate.