Inversion Drum With Removable Wheelbase for Confined Pipe Relining
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Solution Overview
Problem
Existing solutions for inversion units with pipe relining using inversion drums face challenges in usability and transportability, as they either require miniaturization, which limits capacity, or eliminate frameworks, necessitating additional workers for carrying heavy units.
Innovation Solution
An inversion unit with expandable carrying handles and a removable wheelbase, featuring a cylindrical drum with a central shaft, arcuate rail, and adjustable handles, allowing for efficient disassembly and reassembly, and a rolling wheelbase that can be easily detached for ergonomic transportation in small spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed connection framework with rollers is used for the inversion drum, then the system provides structural support and transportability, but the system becomes difficult to carry and use in small spaces unless miniaturized, which limits capacity
Solution Approach 1:
The inversion drum system is divided into separate components: the drum assembly and the wheelbase framework. The drum can be detached from the wheelbase, allowing the drum to be carried independently into small spaces while the wheelbase remains behind for support and operations. This segmentation resolves the contradiction by enabling easy carrying of the essential drum component without requiring miniaturization that would limit capacity.
2Area of stationary object
If the framework with rollers is eliminated to create a smaller footprint, then the system can fit in tighter spaces, but more people are required to carry the heavy unit
Solution Approach 1:
By separating the drum from the wheelbase framework, the heavy framework remains stationary providing support and rollers, while only the lighter drum needs to be moved into tight spaces. This eliminates the need for multiple workers to carry the entire system, as the drum can be maneuvered independently into position while the framework stays in place.
3Volume of moving object
If the inversion drum is miniaturized to fit in small spaces, then the system can be used in confined areas, but the capacity of the system is limited
Solution Approach 1:
The drum is detached from the wheelbase, allowing the drum to be of sufficient size for capacity requirements while still being movable into small spaces independently. The wheelbase framework remains stationary and does not need to fit in small spaces, thus avoiding the need to miniaturize the drum and preserving its capacity while achieving space adaptability.
4Ease of operation
If a stationary framework with rollers is used, then the inversion drum can be positioned and oriented correctly, but the system requires assembly and disassembly for transport
Solution Approach 1:
The connection between the drum and wheelbase is made dynamic rather than fixed. The drum can be quickly attached to or detached from the wheelbase using simple coupling mechanisms. This allows the system to transition between assembled state (for positioning and operations) and disassembled state (for transport), resolving the contradiction by enabling easy reconfiguration without complex assembly procedures.
Data Source
AI summary
An inversion unit assembly is provided that is releasably connected to a wheelbase such that the inversion unit can be quickly removed from the wheelbase and carried separately from the inversion unit. The assembly includes a lining drum having a cylindrical body having an open end and a viewing opening. The lining drum includes two inlets for compressed air and an outlet for liner. The lining drum also includes a rotatable wheel secured to an internal shaft for which the liner can be released from the drum in a controllable fashion. The assembly also includes a wheelbase that can be separated from the inversion lining drum wherein the wheelbase includes a plurality of locking mechanisms and wheels.