Broken Pipe Extraction Needle for Air Pipe Joint Removal
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Solution Overview
Problem
Broken pipes in air pipe joints are difficult to remove, leading to joint failure and system malfunction in hydraulic and pneumatic systems.
Innovation Solution
A broken pipe extraction device comprising a first pressure plate, a second pressure plate, a third pressure plate, a fixing member, a fastening member, and a needle with a barb, which is used to snag and remove the broken pipe from the air pipe joint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional extraction methods are used, then the air pipe joint can be disassembled, but the broken pipe remains trapped and cannot be removed
Solution Approach 1:
The patent introduces a specialized extraction tool as an intermediary device between the broken pipe and the operator. This tool includes a gripping mechanism with claws that can engage with the broken pipe's outer surface, and a pulling mechanism that transmits force to extract the pipe from the joint. The intermediary tool enables removal of the broken pipe without directly manipulating the trapped fragment, resolving the contradiction by making the extraction operation feasible while preserving joint functionality.
Solution Approach 2:
The extraction tool is divided into functional segments: a gripping section with claws for engaging the broken pipe, a transmission section for force application, and a handling section for operator control. This segmentation allows each component to perform its specific function efficiently - the claws engage the broken pipe's surface, the transmission mechanism amplifies pulling force, and the handling section provides operational control, collectively enabling successful extraction.
2Difficulty of detecting and measuring
If the air pipe joint is separated from the air pipes, then the joint can be accessed, but the air pipe fractures and a small section remains trapped
Solution Approach 1:
The extraction tool is designed with pre-configured gripping claws and pulling mechanisms that are prepared in advance for the extraction operation. The claws are positioned to engage the broken pipe's outer surface, and the pulling mechanism is pre-tensioned to provide immediate force application when engagement occurs. This preliminary preparation enables quick and effective extraction, preventing system failure while maintaining accessibility to the broken pipe.
3Stability of the object's composition
If the broken pipe is left in the air pipe joint, then the joint structure remains intact, but the joint and system fail
Solution Approach 1:
The patent applies the extraction principle by designing a tool that specifically targets and removes the broken pipe fragment from the joint. The gripping claws engage the outer surface of the broken pipe, and the pulling mechanism extracts it completely from the joint's internal passage. This extraction process maintains the joint's structural integrity by avoiding damage to the joint body while removing the harmful fragment that would otherwise cause system failure.
Data Source
AI summary
A broken pipe extraction device includes first, second, and third pressure plates, a fixing member, a fastening member, and a needle. The first pressure plate includes a first perforation and a second perforation connected to the first perforation. The second perforation passes through a side wall of the first pressure plate. The second pressure plate faces the first pressure plate. Projecting portions of the first perforation and the second perforation on the second pressure plate overlap. The third pressure plate includes a through hole. The third pressure plate is detachably received in the first perforation and the second perforation. The fixing member mounts on the second pressure plate and faces the first perforation and the second perforation. When the third pressure plate is received in the first and second perforations, the through hole faces the fixing member.