Modular Lorry Pivot Bar with Adjustable Clamping
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Solution Overview
Problem
Existing truck crossbeams require separate manufacturing for each truck series due to differences in frame construction, and within a series, dimensional tolerances necessitate additional measuring pieces for accurate attachment, making the installation process cumbersome and costly.
Innovation Solution
A truck crossbeam design featuring a support tube assembly with clamping engagement between end region fastening arrangements and support tubes, allowing for adjustable length and easy adaptation to specific truck frames, reducing production costs and simplifying installation by enabling on-site cutting of support tubes to exact length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate manufacturing for each truck series is performed, then the crossbeam can be precisely adapted to specific frame constructions, but the production complexity and cost increase significantly
Solution Approach 1:
The patent implements a universal crossbeam design with standardized support tubes and interchangeable end region fastening arrangements that can be adapted to multiple truck series and frame constructions. This allows a single base design to serve multiple applications, eliminating the need for separate manufacturing for each truck series while maintaining precise adaptation through configurable components.
Solution Approach 2:
The crossbeam is divided into modular segments including support tubes and end region fastening arrangements that can be independently configured. This segmentation allows the same support tube assembly to be used across different truck series by simply changing the end fastening components, reducing production complexity while maintaining adaptation precision.
2Manufacturing precision
If dimensional tolerances are compensated by measuring pieces, then the attachment accuracy is improved, but the installation time and complexity increase
Solution Approach 1:
The end region fastening arrangements are designed to be adjustable and reconfigurable during installation, allowing workers to adapt the crossbeam to dimensional variations without requiring precise pre-measurement and fixed positioning. The dynamic adjustment capability eliminates the need for time-consuming measuring piece insertion while maintaining attachment accuracy.
3Adaptability or versatility
If support tubes are delivered with excess length, then the adaptability to different installation lengths is improved, but the material waste increases
Solution Approach 1:
The support tubes are designed as modular segments that can be easily cut to required lengths using standard cutting tools. By delivering tubes with moderate excess length and enabling simple on-site cutting, the system achieves high adaptability while minimizing material waste compared to delivering precisely sized tubes that would be useless if slightly mismatched.
4Manufacturing precision
If the crossbeam is designed with fixed length, then the manufacturing precision is improved, but the adaptability to different truck frames deteriorates
Solution Approach 1:
The crossbeam design incorporates adjustable end region fastening arrangements that can be repositioned along the support tubes to accommodate different installation lengths. This dynamic configuration capability allows a single manufactured length to serve multiple adaptation requirements, maintaining manufacturing precision while achieving frame-specific adaptability through field-adjustable components.
Data Source
Figure 1
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AI summary
The beam (10) has a trailer coupling receiver (44), and a support tube assembly (18) extending along a support tube assembly-longitudinal axis (L) and comprising support pipes (20, 22). An end region-fastening arrangement (24) has a fastening section for fastening the arrangement to a longitudinal end region of the support tube assembly. The arrangement has another fastening section for fastening the arrangement to a frame (16) of a lorry. The former fastening section is formed for clamping engagement with the support tube assembly.