Articulated Robotic Asphalt Sampling Device
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Solution Overview
Problem
Existing methods for sampling hot asphalt from truckloads pose safety risks to operators due to high temperatures and noxious fumes, and restrict sampling flexibility as they often require the operator to be in close proximity to the hot asphalt.
Innovation Solution
An articulated robotic hot asphalt sampling device with a vertical base, rotatable shaft, horizontal arm, and clamshell sampling bucket that allows for remote operation and flexible positioning of haul vehicles, enabling safe and representative sampling without direct exposure to the hot asphalt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an individual steps onto or leans over the hot asphalt load to obtain a sample, then the sampling operation can be performed, but the sampler is exposed to significant safety risks from high temperatures and noxious fumes
Solution Approach 1:
The patent introduces a mechanical sampling device with a sampling head that acts as an intermediary between the operator and the hot asphalt. The device includes a sampling bucket, extending arms, and a positioning mechanism that allows the operator to control sampling from a safe distance while the mechanical intermediary performs the actual contact with the hot material.
Solution Approach 2:
The patent replaces the manual mechanical action of stepping onto or leaning over the asphalt with a controlled mechanical system. The device uses hydraulic or pneumatic actuators, cables, and mechanical linkages to position and operate the sampling bucket, substituting the operator's direct mechanical involvement with a remote-controlled mechanical system.
2Ease of operation
If a vehicle containing hot asphalt is driven under a frame with a mounted sampling device, then sampling can be performed, but the operating area is restricted and the operator remains in proximity to the hot asphalt
Solution Approach 1:
The patent employs dynamic positioning mechanisms including extendable arms, pivoting joints, and adjustable positioning systems that allow the sampling device to reach multiple positions and angles. The mechanical system can dynamically adjust its configuration to accommodate vehicles in various positions, eliminating the need for a fixed overhead frame structure.
Solution Approach 2:
The patent adds dimensional flexibility through multi-axis movement capabilities. The sampling device can extend horizontally, elevate vertically, and pivot angularly, creating a three-dimensional workspace that accommodates vehicles positioned in front, to the side, or at various distances, rather than requiring a single fixed overhead position.
3Measurement precision
If the operator positions themselves close to the hot asphalt for sampling, then accurate sample collection is possible, but safety risks increase significantly
Solution Approach 1:
The sampling bucket and mechanical positioning system serve as intermediaries that maintain precise control over sample collection while keeping the operator at a safe distance. The mechanical linkages and control mechanisms transmit the operator's control inputs accurately to the sampling bucket, ensuring precise sample representation without requiring operator proximity.
Data Source
AI summary
An articulated robotic hot asphalt sampling device comprising: a vertical base; a manually or automatically powered vertical shaft extending vertically from the base; a generally horizontal arm extending from the vertical shaft, having a first end proximate the vertical shaft and a second end remote from the vertical shaft and capable of pivoted vertical movement; a mechanism for pivotally vertically moving the generally horizontal arm; a sampling arm in the second end of the generally horizontal arm capable of upward and downward movement relative to the second end; a mechanism for moving the sampling arm upward and downward; a sampling bucket mounted to the sampling arm; a mechanism for opening and closing the sampling bucket; and a mechanism for controlling movement of the various elements of the sampling device.