Pivotable End-Hose Holder for Articulated Boom Deployment
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Solution Overview
Problem
Large manipulators with articulated booms face issues with end hose holders that interfere during deployment due to fixed holding brackets, causing the end hose to be inadvertently caught and locked, which restricts the movement of boom segments and poses safety risks during concreting operations.
Innovation Solution
A pivotable end-hose holder with a holding bracket that can be positioned in three ways: securing the end hose during travel, releasing it for deployment, and folding onto the boom segment to avoid interference, utilizing an actuator and spring mechanism for automatic control and ensuring secure locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed holding brackets are used to secure the end hose, then the end hose is reliably retained during travel operation, but the holding brackets interfere with boom segment movement during deployment and can inadvertently catch and lock the end hose
Solution Approach 1:
The holding bracket is designed to be pivotable relative to the last boom segment, allowing it to change position dynamically. During travel operation, the bracket pivots to a first position where it secures the end hose reliably. During deployment, it pivots to a second position where it releases the end hose and avoids interfering with boom segment movement. This dynamic repositioning resolves the contradiction between reliable retention and ease of operation.
Solution Approach 2:
The holding bracket is divided into functionally distinct positions: a first pivot position for securing the end hose during travel, a second pivot position for releasing during deployment, and a third pivot position for folding onto the boom segment. This segmentation of functional positions allows the same component to serve multiple purposes at different times, resolving the conflict between retention reliability and operational freedom.
2Reliability
If the holding bracket is positioned to secure the end hose, then reliable locking is achieved, but the holding bracket interferes with the movement of the end hose and boom segments
Solution Approach 1:
The holding bracket transitions between fixed securing positions and movable release positions through pivoting motion. The bracket is designed with a pivot axis that allows it to rotate between a first position (where it locks the end hose reliably) and a second position (where it releases and clears the movement path). This dynamic capability maintains locking reliability when needed while eliminating interference during movement.
Solution Approach 2:
The holding bracket can be folded onto the last boom segment in a third pivot position, effectively nesting it against the boom segment body. This nested configuration minimizes the bracket's spatial footprint and eliminates any potential interference with end hose movement during deployment operations, while still maintaining the ability to extend to securing positions when required.
3Ease of operation
If the holding bracket is made pivotable to avoid interference, then boom segment movement is unrestricted, but the end hose may be inadvertently released
Solution Approach 1:
The holding bracket is designed with a spring-assisted locking mechanism that automatically engages when the bracket pivots to the first position, securing the end hose before any deployment movement occurs. The spring force ensures positive engagement and prevents inadvertent release. The bracket must be deliberately pivoted to the second position to release the end hose, making accidental release unlikely while maintaining unrestricted movement capability during intended deployment.
4Volume of moving object
If the holding bracket is folded onto the boom segment, then space is optimized and interference is eliminated, but the end hose cannot be secured
Solution Approach 1:
The holding bracket dynamically changes its spatial configuration through pivoting. In the third pivot position, the bracket folds onto the last boom segment, optimizing space utilization and eliminating interference with end hose movement. When travel operation is required, the bracket pivots to the first position, extending outward to securely hold the end hose. This dynamic spatial transformation resolves the contradiction between compact storage and functional retention.
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 pivotable end-hose holder allows for unrestricted movement of boom segments during deployment and secure hose retention during operations, enhancing safety and reducing the risk of accidental hose release, while ensuring reliable locking and space-efficient design.
Implementation Method 1
These holding brackets in some cases have a spring-assisted locking means which locks the end hose in the end-hose holder
Data Source
AI summary
A large manipulator includes an articulated boom that can be folded out. The articulated boom includes boom segments including a last boom segment having a boom tip. The articulated boom includes an end hose and end-hose holder. The end hose is flexible, arranged on the last boom segment, and can be removably coupled to the last boom segment by the end-hose holder. The end-hose holder includes a holding bracket arranged on the last boom segment. The holding bracket is configured to be pivotable into a first pivot position, a second pivot position, and a third pivot position relative to the last boom segment.