Manual Saddle Peeling for Pipe Welding in Explosive Atmospheres
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing peeling devices for plastic pipes require full exposure of the pipe circumference, are inefficient in explosive atmospheres due to electrical components, and produce small chips that are difficult to collect, leading to environmental pollution and uneven surface preparation.
Innovation Solution
A manually operated saddle peeling device with a supporting unit, guiding unit, and handle unit, allowing precise manual guidance and peeling without full pipe exposure, using non-electrical components and producing larger, easier-to-collect chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If full circumference exposure is required for peeling, then complete surface treatment is achieved, but work effort increases significantly and space requirements increase
Solution Approach 1:
The peeling device is designed as a saddle-shaped unit that segments the peeling operation to only the required section of the pipe circumference, rather than requiring full exposure. The guiding unit with rollers and the peeling blade are arranged to work locally on the pipe surface where saddle connections are needed.
Solution Approach 2:
The device applies peeling treatment locally only to the specific area where saddle connections will be made, rather than treating the entire pipe circumference. This localized approach reduces the exposed area needed and consequently reduces the time and effort required.
2Productivity
If electric actuators are used to drive the peeling blade, then automated peeling is achieved, but explosion protection requirements increase costs and complexity
Solution Approach 1:
The patent replaces electric actuators with a manually operated mechanical system. The peeling blade is driven by manual feeding motion through the pipe, eliminating the need for electric motors and associated explosion protection measures in potentially hazardous atmospheres.
3Productivity
If rotating peeling knives are used, then automated surface removal is achieved, but small chips are produced that are difficult to collect and environmentally harmful
Solution Approach 1:
The rotating peeling knife is replaced with a manually fed peeling blade that removes material in a controlled manner, producing larger, more manageable chips that are easier to collect and less environmentally harmful.
Solution Approach 2:
The manual feeding mechanism allows the operator to control the peeling process and chip removal, enabling immediate collection and proper disposal of the generated material, thereby reducing environmental pollution.
4Ease of operation
If hand scrapers are used for peeling, then no electrical components are needed, but the surface becomes uneven due to varying peeling depth
Solution Approach 1:
The guiding unit with rollers acts as an intermediary between the manual operation and the peeling blade, providing a reference framework that ensures consistent peeling depth and uniform surface preparation, while still maintaining manual operation without electrical components.
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 efficient and environmentally friendly pipe surface preparation for welding, suitable for explosive atmospheres, with precise peeling depth adjustment and reduced environmental impact.
Implementation Method 1
a guiding unit (300, 30), provided on the underside of the supporting unit (200, 20), and configured to guide the supporting unit at a defined distance from the surface of the tubular body to be machined
Implementation Method 2
a peeling device and a handle unit (50, 500) are attached to the supporting unit. The peeling device is provided on the underside of the supporting unit, comprises at least one peeling blade which is configured to contact the surface of the tube to be machined, thereby removing material from the surface of the tube
Data Source
AI summary
A manually operated saddle peeling device for machining an outer surface of a tubular body, comprises a supporting unit and a guiding unit provided on an underside of the supporting unit and configured to guide the supporting unit in a peeling direction at a defined distance from the surface of the tubular body to be machined. The device further comprises a peeling unit provided on an underside of the supporting unit opposite the surface of the tubular body to be machined, comprising at least one stationary peeling blade which is configured to contact the surface of the tubular body to be machined and thereby remove material from the surface of the tubular body and a handle unit provided to the side of the supporting unit and thus generally parallel to the peeling direction and configured to enable manual guidance of the saddle peeling device over the outer surface of the tubular body at least in portions.