Pipe Fitting Tool Segmented Jaw Grip Stability
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Solution Overview
Problem
Existing pipe fitting tools struggle to efficiently loosen pipe elements with threaded joints, often resulting in slipping or inadequate grip, which can lead to damage or incomplete loosening.
Innovation Solution
A pipe fitting tool featuring a motorized drive assembly and a holdback assembly with a fixed and movable jaw, equipped with teeth sections angled in opposing directions to enhance grip and prevent slipping during rotational motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional pipe fitting tool is used to loosen pipe elements, then the tool can rotate the pipe element, but the tool slips or fails to maintain adequate grip on the pipe elements
Solution Approach 1:
The jaw is divided into multiple teeth sections (first teeth section, second teeth section, third teeth section) with different orientations. Each teeth section has teeth angled in different directions to engage with the pipe element at various positions, providing distributed grip points that prevent slipping during rotation.
Solution Approach 2:
Different sections of the jaw have locally optimized tooth orientations. The first teeth section has teeth angled in a first direction, the second teeth section has teeth angled in a second direction opposing the rotational direction, and the third teeth section has teeth angled in a third direction. This local variation in tooth orientation provides enhanced grip stability at different locations on the pipe element.
2Productivity
If a pipe fitting tool applies rotational force to loosen threaded joints, then the loosening function is achieved, but the tool causes damage to the pipe elements due to inadequate grip
Solution Approach 1:
The holdback assembly clamps onto the second pipe element before rotational loosening begins. The multiple teeth sections are positioned to engage with the pipe element surface in advance, establishing a secure grip that prevents slipping and potential damage during the subsequent rotational loosening operation.
Solution Approach 2:
The teeth sections are oriented to convert the harmful slipping motion into beneficial gripping force. The second teeth section with teeth angled in the direction opposing the rotational direction specifically counters the tendency to slip, transforming potential damage-causing motion into effective grip that protects the pipe element during loosening.
3Device complexity
If a pipe fitting tool uses a simple jaw design to hold pipe elements, then the device complexity is reduced, but the grip on pipe elements becomes inadequate
Solution Approach 1:
The jaw is segmented into multiple teeth sections integrated within a single jaw structure. This segmentation provides enhanced grip functionality without requiring multiple separate jaw components, maintaining relative structural simplicity while improving grip security through the distributed tooth sections with different orientations.
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
The tool effectively loosens pipe elements by maintaining a secure grip on both pipe elements, reducing the risk of slipping and ensuring complete loosening without damage.
Implementation Method 1
teeth sections angled in opposing directions to enhance grip and prevent slipping during rotational motion
Data Source
AI summary
A pipe fitting tool is configured to loosen a first pipe element with respect to a second pipe element. The pipe fitting tool includes a motor, a holdback assembly configured to clamp and hold the second pipe element, the holdback assembly including a fixed jaw, a movable jaw, and a plurality of teeth sections, and a drive assembly. The drive assembly is configured to clamp and rotate the first pipe element with respect to the second pipe element in response to a first linear motion of the reciprocating member, and release the first pipe element in response to a second linear motion of the reciprocating member, the second linear motion being in a direction opposite the first linear motion. At least one of the plurality of teeth sections is pivotally coupled to the fixed jaw.