Telescopic Swivel Leg Locking for Concrete Pumps
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Solution Overview
Problem
Existing truck-mounted concrete pumps face issues with telescopic swivel legs impacting the driver's cab or other structures due to lack of effective locking mechanisms, leading to potential damage during operation or emergency stops, and existing solutions are bulky, expensive, and require manual operation.
Innovation Solution
A lightweight and cost-effective locking mechanism for telescopic swivel legs is introduced, where the locking means and counter-locking means engage when the leg is pivoted in and telescoped, eliminating the need for a large mechanical stop and allowing automatic engagement without manual operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stable mechanical bracket is provided to prevent telescopic leg extension, then the driver's cab is protected from impact, but the device becomes bulky, large and expensive
Solution Approach 1:
The locking mechanism is divided into separate components: a locking means (projection) on one element and a counter-locking means (recess) on another element. These segmented parts engage with each other to provide the locking function, replacing the need for a single large mechanical bracket.
Solution Approach 2:
The locking projection is designed to engage within the counter-locking recess, creating a nested arrangement where smaller locking components fit within the structural elements of the swivel leg assembly, eliminating the need for external bulky brackets.
2Reliability
If manual clamps are used to connect telescopic section to swivel section, then the telescopic leg is secured, but manual operation is required which is cumbersome and can be bypassed or forgotten
Solution Approach 1:
The locking means and counter-locking means are designed to engage automatically through the mechanical motion of the swivel leg itself. The pivoting and telescoping actions naturally bring the locking projection and counter-locking recess into engagement, eliminating the need for manual operation while maintaining reliable securing.
Solution Approach 2:
The locking projection and counter-locking recess are pre-positioned on the respective components so that when the swivel leg is swung in and telescoped, the locking engagement occurs automatically as a preliminary result of the motion sequence, before any potential impact or uncontrolled telescoping can occur.
3Reliability
If locking means and counter-locking means are engaged in pivoted-in and telescoped state, then unintended telescoping is prevented, but the locking mechanism must be precisely positioned
Solution Approach 1:
The locking mechanism is designed to engage dynamically during the normal operational sequence of swinging in and telescoping. The locking projection and counter-locking recess are positioned to engage naturally as the mechanism moves into its working position, rather than requiring precise pre-positioning before operation begins.
Data Source
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AI summary
The invention relates to a truck-mounted concrete pump with at least one telescopic swivel leg and at least one frame section, wherein the telescopic swivel leg comprises at least one swivel section and at least one telescopic section, wherein the swivel section is pivotably articulated to the frame section, wherein at least one locking means and at least one counter-locking means are provided, by means of which the telescopic section can be locked relative to the swivel section in a swiveled and telescoped state of the swivel section.