Telescopic Overlength Sign Mount for Truck Load Overhangs
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Solution Overview
Problem
Existing storage devices for overlength signs on trucks are labor-intensive and prone to damage, as they require manual adjustment and protection when not in use.
Innovation Solution
A length-adjustable storage device with a pivotably mounted overlength sign that can be releasably locked in various positions, allowing for easy stowage and deployment, and featuring a telescopic design to accommodate different load overhangs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the overlength sign is permanently mounted on a pole and secured in an extended position with a bracket, then the sign is always visible, but labor increases and susceptibility to damage increases
Solution Approach 1:
The overlength sign is mounted on a telescopic arm that can extend and retract, and on a pivotable support that can rotate between horizontal and vertical positions. This dynamic mounting allows the sign to be automatically positioned based on load conditions without manual intervention, reducing labor while maintaining visibility when needed.
Solution Approach 2:
The system automatically extends the telescopic arm and positions the sign based on the presence of overhanging loads. The pivotable support rotates automatically when the load condition changes, eliminating the need for manual operation and reducing labor requirements.
2Reliability
If the overlength sign is removed from the bracket and transported separately, or transported in a retracted position, then damage risk is reduced, but labor increases
Solution Approach 1:
The telescopic arm can be automatically retracted into a compact position when the overlength sign is not needed, and the pivotable support can rotate to a vertical position for stowage. This dynamic configuration allows the system to protect itself from damage during transport without requiring manual removal or positioning.
3Reliability
If a cover is used to screen and protect the overlength sign, then damage risk is reduced, but device complexity increases
Solution Approach 1:
Instead of using a protective cover, the system uses a dynamic mounting with a telescopic arm and pivotable support that automatically positions the sign based on operational needs. The sign can be retracted and rotated to protected positions without requiring additional protective structures, reducing overall device complexity.
4Device complexity
If the overlength sign is rigidly mounted, then structural simplicity is maintained, but damage occurs when subjected to external forces
Solution Approach 1:
The overlength sign is mounted on a pivotable support that can rotate relative to the telescopic arm, allowing the sign to pivot when subjected to external forces such as wind or accidental impacts. This dynamic mounting absorbs external forces through rotation rather than rigid resistance, preventing damage while maintaining relatively simple structural implementation.
Data Source
Figure 1a
Figure 1b
Figure 2a~2b
AI summary
An arrangement comprising a length-variable storage device (1) for an overlength sign (3) for marking protruding loads of a truck (4) and an overlength sign (3), wherein the storage device (1) has at least a first telescopic part (11) and a second telescopic part (12) movable relative to the first telescopic part (11), wherein the first telescopic part (11) can be mounted on a vehicle frame (5) of a truck (4), wherein the overlength sign (3) is pivotably mounted on the second telescopic part (12) and can be detachably locked in at least one pivot position relative to the second telescopic part (12).