Telescopic Canopy Guide Latching Mechanism for Construction Machines
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Solution Overview
Problem
Construction machines with adjustable protective canopies often experience wobbling and rattling during movement due to complex telescopic guide units, which can be cumbersome and prone to issues like latching element loss and dirt accumulation.
Innovation Solution
A simplified telescopic guide unit design featuring a latching element with a pivoting axis on the second telescopic element, allowing it to pivot into a recess and apply external force to the first telescopic element, reducing wobbling and rattling, and incorporating an adjustment mechanism for easy height adjustment with play, and a retract position for secure retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a complex telescopic guide unit with guide pieces is used, then wobbling and rattling of the protective canopy is reduced, but the device complexity increases
Solution Approach 1:
The latching element is divided into two functional parts: a first part that engages with the recess to prevent downward movement, and a second part that presses against the outer side to eliminate lateral play. This segmentation allows each part to address specific stability issues independently, achieving overall stability without requiring a complex guide piece assembly.
Solution Approach 2:
The single latching element performs multiple functions: it acts as a stop mechanism via the first part engaging the recess, and simultaneously functions as a tightening mechanism via the second part pressing against the outer side. This multi-functionality replaces what would traditionally require separate guide pieces, reducing device complexity while maintaining stability.
2Stability of the object's composition
If a telescopic guide unit with guide pieces is used, then stability is improved, but ease of operation deteriorates due to dirt accumulation and adjustment difficulty
Solution Approach 1:
The latching element is extracted from the interior of the telescopic guide unit and positioned on the outer side. This extraction prevents dirt and contaminants from accumulating around the latching mechanism, making it easier to operate and maintain. The first part that engages the recess is accessible from the outside, allowing for simple manual operation without disassembly.
Solution Approach 2:
The latching element is designed to automatically engage with the recess when the first telescopic element is pushed in the first direction, and automatically press against the outer side to eliminate play. This self-acting mechanism reduces the effort required for operation and maintains stability without requiring complex adjustment procedures.
3Ease of operation
If the latching element is arranged on the first telescopic element, then adjustment is easier, but the latching element may be lost
Solution Approach 1:
The latching element combines two retention strategies: it is mounted on the first telescopic element for easy adjustment, while simultaneously being retained by the second part that presses against the outer side of the first telescopic element. This dual retention approach ensures the latching element cannot be lost during operation, while maintaining ease of adjustment through its positioning on the movable element.
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
The solution effectively reduces wobbling and rattling, allows for easy and secure adjustment of the protective canopy, and ensures the latching element remains attached, enhancing operational stability and ease of use while maintaining protection during transport.
Implementation Method 1
the latching element is arranged to pivot about a pivoting axis on the second telescopic element and is shaped in such a fashion that, by means of moving the first telescopic element relative to the second telescopic element in a first direction, a first part of the latching element is pivotable into the recess and a second part of the latching element presses against the outer side of the first telescopic element from outside
Implementation Method 2
the second part of the latching element presses against the outer side of the first telescopic element, thus reducing any potential wobbling and rattling of the telescopic guide unit
Implementation Method 3
the first telescopic element may be canted or locked in place, respectively, in the second telescopic element
Implementation Method 4
the latching element applies an external force to the outer side of the first telescopic element, thus reducing any potential wobbling and rattling of the telescopic guide unit
Data Source
AI summary
In a construction machine (1) for working a ground pavement, comprising a machine frame (5) supported by travelling devices (3), an operator platform (11) arranged on the machine frame (5), and a protective canopy (13), adjustable in height by means of a telescopic guide unit (2), arranged on the operator platform (11), wherein the telescopic guide unit (2) comprises at least one first telescopic element (4) and one second telescopic element (6), wherein the first telescopic element (4) is at least partially guidable in the second telescopic element (6), at least one driving device (10) for moving the protective canopy (13) up and down by means of moving the first telescopic element (4) relative to the second telescopic element (6), it is provided that at least one recess (14) in the first telescopic element (4) and at least one latching element (12) are provided, wherein the latching element (12) is arranged to pivot about a pivoting axis (16) on the second telescopic element (6) and is shaped in such a fashion that, by means of moving the first telescopic element (4) relative to the second telescopic element (6) in a first direction (B), a first part (18) of the latching element (12) is pivotable into the recess (14) and a second part (20) of the latching element (12) presses against the outer side (22) of the first telescopic element (4) from outside.