Hydrodemolition Rig Hydraulic Wheel Adjustment
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Solution Overview
Problem
Hydrodemolition rigs face instability and inconsistent nozzle orientation on inclined surfaces, such as dam and spillway walls, due to top-heaviness and uneven wheel placement, leading to potential rig toppling and suboptimal surface treatment.
Innovation Solution
The hydrodemolition rig features selectively extendable wheels with hydraulic assemblies that adjust the spacing and height of the frame, allowing for compensation for uneven surfaces and maintaining rig stability and optimal nozzle orientation on inclined surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the rig is made top-heavy to provide stability on inclined surfaces, then stability is improved, but the risk of toppling increases when the incline is severe
Solution Approach 1:
The wheel assemblies are made dynamically adjustable through hydraulic assemblies that allow selective extension and retraction. This enables the rig to adapt its wheel spacing and orientation in real-time to compensate for wall inclination and maintain stable operation without requiring a top-heavy design that would increase toppling risk
Solution Approach 2:
The hydraulic assemblies change the physical parameters of the wheel assemblies by selectively extending or retracting them. This adjusts the spacing between wheels and the rig's orientation relative to the wall surface, allowing the rig to maintain stability on inclined surfaces while keeping a balanced weight distribution
2Ease of operation
If the rig rolls directly over the hydrodemolished surface, then movement is simplified, but the rig becomes uneven when straddling treated and untreated portions
Solution Approach 1:
The wheel assemblies incorporate hydraulic assemblies that enable dynamic adjustment of wheel position and spacing. When the rig straddles treated and untreated portions of the wall, the hydraulic assemblies selectively extend or retract wheels to compensate for height differences, maintaining rig levelness while keeping the simple rolling movement mechanism
Solution Approach 2:
The system changes the spatial parameters of the wheel assemblies by adjusting wheel spacing and position through hydraulic extension and retraction. This compensates for surface unevenness created by hydrodemolition, maintaining consistent nozzle orientation and rig levelness throughout operation
3Manufacturing precision
If the rig orientation is adjusted to compensate for uneven surfaces, then nozzle orientation consistency is improved, but additional adjustment mechanisms are required
Solution Approach 1:
The hydraulic assemblies perform multiple functions: they adjust wheel spacing, compensate for surface unevenness, and maintain rig orientation simultaneously. This multi-functionality achieves consistent nozzle orientation without requiring separate adjustment mechanisms for each function, thereby limiting the increase in device complexity
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 ensures stable operation and consistent hydrodemolition by adjusting the rig's tilt and height, preventing toppling and ensuring optimal water jet alignment, thereby improving the efficiency and effectiveness of the hydrodemolition process on inclined surfaces.
Implementation Method 1
a hydraulic assembly for selectively adjusting the spacing between the wheel and the frame... each of the hydraulic assemblies comprises an axle, an arm, and a hydraulic cylinder... The hydraulic cylinder comprises first and second cylinder ends, wherein the hydraulic cylinder is pivotably connected to the arm proximate to the first cylinder end and wherein the hydraulic cylinder is pivotably connected to the lower frame proximate to the second cylinder end
Implementation Method 2
The carriage is configured to reciprocate within the frame and to carry one or more nozzles for delivering water to hydrodemolish the surface underlying the frame
Data Source
AI summary
A hydrodemolition rig for an inclined surface comprises a frame, a carriage, and a plurality of wheel assemblies. The wheel assemblies are spaced from one another about the frame, with at least two of the wheel assemblies comprising a wheel and a hydraulic assembly for selectively adjusting the spacing between the wheel and the frame. The carriage is configured to reciprocate within the frame and to carry one or more nozzles for delivering water for hydrodemolition.