Telescopic Grandstand Profile with U-Shaped Support and Rollers
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Solution Overview
Problem
Existing transportable grandstands experience deformations and increased maintenance costs due to dynamic loads, especially at events like sporting events, and often lack necessary stability and compliance with safety standards, with lifting devices being unnecessary and prone to failure.
Innovation Solution
The telescopic support profile is U-shaped with leg ends drawn into a slot, featuring support rollers on both sides of a vertical web, distributing load and enhancing rigidity, and preventing derailment with an almost closed profile design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional telescopic support profiles are used in transportable grandstands, then the grandstand can be assembled and disassembled for transport, but deformations occur under dynamic loads leading to high maintenance costs
Solution Approach 1:
The support profile is divided into multiple telescopic segments that can slide relative to each other along guide slots. This segmentation allows the grandstand to be disassembled for transport while maintaining structural integrity during use, resolving the contradiction between transportability and mechanical stability
Solution Approach 2:
The support rollers are combined with the telescopic support profile structure, where rollers are mounted on the segments and run along the support profile. This integration ensures that the rollers remain properly positioned during telescopic movement while providing stable support under load, preventing deformations and reducing maintenance needs
2Ease of operation
If support rollers are not properly constrained, then the telescopic structure can move freely for assembly, but rollers may derail sideways under overload or improper handling
Solution Approach 1:
Guide slots act as an intermediary structure between the telescopic segments and support rollers. These slots constrain the rollers to move only along the intended telescopic path while preventing sideways movement that would cause derailment, thus maintaining both ease of assembly and operational reliability
Solution Approach 2:
The support profile design incorporates predetermined geometric constraints (guide slots and roller positioning) that prevent derailment before it can occur. This proactive design ensures that even under improper handling or overloading, the rollers remain constrained to their proper paths, eliminating the need for reactive safety measures
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 design significantly increases mechanical stability and resilience without weight or complexity increases, resisting deformations and ensuring safety even under improper handling or overloading, reducing maintenance costs and ensuring compliance with safety standards.
Implementation Method 1
support rollers run on the running surfaces
Implementation Method 2
support rollers run on the running surfaces
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a grandstand (1), in particular a transportable grandstand, with step elements (2) which can be extended telescopically in a horizontal extension direction (F) into the operating position from a substantially cuboid support frame (5) in which they are arranged in the transport position or rest position, along support profiles (3) which are arranged in the lateral end area of the step elements.The invention is characterized in that at least one support profile (3) has a substantially inverted U-shape in cross-section, thus being open at the bottom, and has inwardly inwardly inwardly inwardly inwardly inwardly in the direction of the slot (13), the upper, thus internally located surfaces of which serve as running surfaces (11, 12), and that at least four paired support rollers (14) of the underlying step element (2) run in this support profile (3), which are arranged on both sides of a substantially vertical web (7) that projects through the slot (13), and that the web (7) is in turn connected at its underside to a support profile (3) projecting in the extension direction (F).