Pivoting Hydrodemolition Nozzle for Overhanging Inclined Surfaces
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Solution Overview
Problem
Existing hydrodemolition apparatuses are not adapted to treat overhanging inclined surfaces, such as outwardly extending walls of buildings or the hull of a marine vessel, as they lack the necessary flexibility to accommodate and effectively orient high-pressure water nozzles at appropriate angles.
Innovation Solution
A hydrodemolition apparatus featuring a vertically extending frame with a horizontally extending carriageway, a carriage for horizontal displacement, an elongated member that can extend and retract, and a pivoting nozzle wall to direct high-pressure water jets at an upward angle, allowing for multiple degrees of freedom in nozzle orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing hydrodemolition apparatuses are used on overhanging inclined surfaces, then the apparatus structure remains simple, but the nozzle cannot be oriented at appropriate angles to treat the surface effectively
Solution Approach 1:
The nozzle is made dynamically adjustable through a pivoting mechanism that allows it to change its orientation angle relative to the vertical plane. The nozzle wall can pivot about a horizontal axis, enabling the nozzle to be oriented at different angles to match the inclination of overhanging surfaces, transforming a static nozzle configuration into a dynamic one that adapts to varying surface geometries.
Solution Approach 2:
The invention adds a new degree of freedom by introducing pivoting motion about a horizontal axis, which is perpendicular to the existing reciprocation direction of the nozzle. This creates a two-dimensional orientation capability (reciprocation along the longitudinal axis plus pivoting about the horizontal axis), allowing the nozzle to orient in multiple directions and effectively treat overhanging inclined surfaces that require angular adjustment beyond simple linear movement.
2Adaptability or versatility
If a fixed nozzle configuration is used, then the apparatus structure remains simple, but the nozzle cannot direct high-pressure water at upward angles for overhanging surfaces
Solution Approach 1:
The nozzle mounting structure incorporates a pivoting mechanism that enables dynamic angle adjustment. The nozzle wall pivots about a horizontal axis, allowing the nozzle to direct water at upward angles when treating overhanging surfaces. This dynamic mounting structure replaces the fixed configuration, providing adaptability to different surface inclinations while maintaining structural integrity.
Solution Approach 2:
The pivoting nozzle mounting structure serves multiple functions: it allows the nozzle to reciprocate along its longitudinal axis for treating vertical portions, pivot to upward angles for overhanging surfaces, and potentially orient in intermediate angles for various inclinations. This multi-functional mounting structure can treat diverse surface geometries (vertical, inclined, overhanging) with a single apparatus configuration, enhancing universality without requiring multiple specialized devices.
3Adaptability or versatility
If the nozzle can only reciprocate along a straight path, then the apparatus structure remains simple, but the nozzle cannot treat compound or curved inclined surfaces effectively
Solution Approach 1:
The nozzle movement is extended from one-dimensional reciprocation along a straight path to two-dimensional motion by adding pivoting capability about a horizontal axis. This allows the nozzle to cover compound and curved inclined surfaces by combining linear reciprocation with angular pivoting, effectively treating surfaces that require both lateral movement and angular adjustment, such as the hull of a marine vessel or compound inclined walls.
Solution Approach 2:
The nozzle movement mechanism transitions from a static straight-path reciprocation system to a dynamic system that combines reciprocation with pivoting motion. The nozzle can dynamically adjust its orientation angle while reciprocating, enabling it to follow the contours of compound or curved inclined surfaces. This dynamic movement pattern allows effective treatment of complex geometries that cannot be accessed by fixed straight-path reciprocation alone.
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
Enables effective treatment of overhanging inclined surfaces by allowing the nozzle to be oriented substantially normal or tangent to the surface, facilitating thorough and efficient hydrodemolition of compound or curved surfaces.
Implementation Method 1
at least one high-pressure water nozzle adapted to reciprocate along a longitudinal axis of the nozzle wall... a jet of high-pressure water may be directed substantially normal to an overhanging inclined surface for treatment
Data Source
AI summary
A hydrodemolition apparatus provides multiple degrees of freedom enabling the treatment of overhanging or vertically inclined surfaces. A nozzle wall or track is pivotable to present the nozzles substantially normal to the overhanging or inclined surface. The nozzle wall or track is positioned proximate to the inclined surface by a combination of a vertically displaceable carriageway, a laterally displaceable carriage and an elongated member that terminates in the pivotable nozzle wall or track.