Pivotable Roller Support Frame for Safe Membrane Roll Changes
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Solution Overview
Problem
The manual application of bituminous roofing membranes is labor-intensive, varies in quality due to skill dependency, and poses physical demands and injury risks, with existing apparatuses complicating safe roll changes due to burner proximity.
Innovation Solution
A membrane applying apparatus with a pivotable roller support frame allows for safe installation and removal of membrane rolls without operator proximity to burners, featuring steerable wheels, a platform for operator comfort, and articulated linkages for easy frame movement between operative and inoperative positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the roller support frame is fixed in position, then the membrane application process is stable, but the burners are in close proximity to the membrane roll making roll changes dangerous
Solution Approach 1:
The roller support frame is made movable between a first position during membrane application and a second position during roll changes. This dynamic repositioning allows the frame to move away from the burners, providing safe access to the membrane roll without compromising the stability needed for application.
Solution Approach 2:
The apparatus is divided into separable functional components: the roller support frame that carries the membrane roll and applying rollers, and the burner assembly. This segmentation allows independent movement of the roller support frame from the burners during roll changes, eliminating the safety hazard of proximity.
2Productivity
If manual torch application is used, then the equipment is simple, but the process is labor-intensive and quality varies with operator skill
Solution Approach 1:
The membrane applying apparatus is self-propelled through motorized wheels that move the entire apparatus along the roof surface. This eliminates the need for operators to manually push or reposition heavy equipment, significantly improving productivity while the automated membrane application process reduces dependency on operator skill for consistent quality.
3Reliability
If the roller support frame is moved for roll changes, then safe access is provided, but the membrane application process is interrupted
Solution Approach 1:
The membrane roll is pre-mounted on the roller support frame before approaching the work area. This allows the apparatus to maintain continuous motion and application process, with roll changes occurring quickly when the frame is repositioned, minimizing interruption time.
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
Reduces the risk of burner-related injuries and improves the efficiency of membrane application by enabling safe and easy roll changes, while maintaining effective membrane adhesion and installation quality.
Implementation Method 1
The burners are generally configured to heat the adherent under side of the membrane such that the under side softens enough to adhere on the roof decking surface during installation.
Data Source
AI summary
A membrane applying apparatus comprises a wheeled frame adapted to ride on a surface to be covered with the membrane. The rear end of the wheeled frame is generally configured to support a roll of membrane. The apparatus also comprises a roller support frame pivotally mounted to the wheeled frame at the rear end thereof. The roller support frame pivotally supports an idler roller and a pressing roller for respectively guiding and pressing the membrane as the membrane is unrolled during its application. The roller support frame is pivotable between an operative position in which the idler roller and pressing roller respectively guides and presses the membrane, and an inoperative position. In the inoperative position, the roller support frame is pivoted substantially upwardly, thereby providing access to the rear end of the wheeled frame to allow the installation or removal of the roll of membrane.