Rotating Half-Clamp Structure for Collision-Free Pipe Sawing

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Solution Overview

Problem

Existing pipe sawing systems face instability and collision issues due to the limited opening angle of traditional clamps, leading to system failures during alternate cutting operations.

Innovation Solution

A clamp design featuring a base with rotatable half clamp bodies and a driving assembly that increases the opening angle, allowing the clamp bodies to approach or separate, preventing collisions by staggering the clamping positions of multiple clamps around the pipe.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If traditional clamps with one fixed clamping arm and one rotating clamping arm are used, then the clamp structure is simple, but the clamping opening is small and collisions occur at the meeting position

Engineering Contradiction:
Improveclamp structureVSAvoidclamping opening angle
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The clamp body is divided into a first half clamp body and a second half clamp body, each independently rotatable relative to the base. This segmentation allows each half to move freely, increasing the overall clamping opening angle and preventing collisions at the meeting position while maintaining structural simplicity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Both the first and second half clamp bodies are made rotatable relative to the base, transforming the static fixed clamping arm into a dynamic component. This dynamic design enables the clamp to achieve a larger opening angle during the cutting process while avoiding collisions

Inventive Principle:
Principle #15Dynamics

2Device complexity

If traditional clamps are used in dual sawing machines, then the clamp structure is simple, but the clamps collide at the meeting position causing system failures

Engineering Contradiction:
Improveclamp structureVSAvoidsystem stability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

Dividing the clamp body into two independently rotatable half clamp bodies allows them to move separately and avoid collisions at the meeting position, thereby improving system reliability without significantly increasing structural complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Making both half clamp bodies rotatable creates dynamic clearance between the clamps during operation, preventing collisions and system failures while maintaining a relatively simple clamp structure

Inventive Principle:
Principle #15Dynamics

3Productivity

If multiple sawing machines perform alternate cutting operations, then production efficiency is improved, but the pipe becomes unstable and shakes during cutting

Engineering Contradiction:
Improveproduction efficiencyVSAvoidpipe stability
Core Design Contradiction:
ProductivityVSStability of the object's composition

Solution Approach 1:

The dynamic rotatable design of both half clamp bodies allows the clamp to maintain stable contact with the pipe during alternate cutting operations, preventing pipe instability and shaking while enabling high-efficiency production mode

Inventive Principle:
Principle #15Dynamics

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 solution enhances clamp stability and prevents collisions, enabling continuous operation of multiple sawing machines while maintaining the pipe's stability during cutting, thus improving production efficiency.

Implementation Method 1

each of the first half clamp body and the second half clamp body is rotatably connected to the base

Methodology Applied
Scientific EffectRotation:

Implementation Method 2

the driving assembly is adapted to drive the first half clamp body and the second half clamp body through the connector to rotate and approach or separate from each other

Methodology Applied
Scientific EffectMechanical Force:

Implementation Method 3

The connector includes a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably connected to the first half clamp body, and one end of the second connecting rod is rotatably connected to the second half clamp body

Methodology Applied
Scientific EffectMechanical Advantage:

Data Source

PatentEP3928930B1Clamp and saw cutting device
Publication Date: 2024.04.24 DALIAN FIELD HEAVY MACHINERY MFG CO LTD
  • EP3928930B1 patent drawingFigure 1~2
  • EP3928930B1 patent drawingFigure 3~5
  • EP3928930B1 patent drawingFigure 6~7

AI summary

A clamp includes a base (11), a clamp body and a driving assembly, the clamp body is connected to the base (11), the clamp body includes a first half clamp body (121) and a second half clamp body (122), each of the first half clamp body (121) and the second half clamp body (122) is rotatably connected to the base (11); the driving assembly is connected to the first half clamp body (121) and the second half clamp body (122) through a connector, and drives the first half clamp body (121) and the second half clamp body (122) through the connector to rotate and approach or separate from each other, the first half clamp body (121) and the second half clamp body (122) cooperate with each other to clamp an object (20). A sawing device includes a plurality of such clamps and a plurality of sawing machines for being used in conjunction with the clamps to perform cooperative processing. The two half clamp bodies simultaneously rotate to increase an opening angle of the clamp, which can allow the clamp body in a closed state to pass therethrough, and the clamp has a simple structure and is convenient for disassembly and maintenance.