Coaxial Twister for Tubular Casing in Vertical Excavations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mechanical, hydraulic, or pneumatic mechanisms for assembling and disassembling tubular lining pipes in vertical excavations are unsafe and inefficient, particularly when working at heights, requiring manual labor and leading to slower operations and increased risk of damage to the pipes.
Innovation Solution
A mechanical locking and rotating device consisting of three coaxially connected cylindrical elements with plugs and interpenetrating screws, allowing for secure constrainment and rotation of lining tubes, enabling both automatic and manual operation, and featuring a cam-tappet system for optimal force transmission and safe handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is used to assemble and disassemble lining pipes at heights, then workers can perform the operations, but safety is compromised and operations are slower
Solution Approach 1:
The patent replaces manual mechanical operation with an automated mechanical locking and rotating device that uses cam-tappet mechanisms and interpenetrating screws to securely constrain and rotate lining tubes. The device eliminates the need for workers to manually handle pipes at heights by providing an automated system that performs assembly and disassembly operations safely and efficiently.
2Productivity
If mechanical, hydraulic, or pneumatic mechanisms are used to replace manual operation, then productivity increases, but device complexity increases
Solution Approach 1:
The patent divides the locking and rotating device into three separate coaxial elements, each with specific functions: a first element for maneuvering, a second central element for rotation, and a third element for connection. This segmentation allows each component to be simpler in design while collectively achieving the complex function of secure constrainment and rotation, thereby reducing overall device complexity while maintaining productivity.
3Productivity
If existing mechanisms are used to handle long lining tubes, then assembly can be performed, but the pipes may be damaged during insertion and extraction
Solution Approach 1:
The patent introduces an intermediary locking and rotating device between the handling equipment and the lining tubes. The device uses a cam-tappet system with interpenetrating screws that provide controlled, gradual engagement and disengagement, preventing sudden forces that could damage the pipes. The intermediary mechanism ensures smooth insertion and extraction while maintaining secure constrainment throughout the operation.
Data Source
AI summary
Locking and rotating device, twister, for tubular casing elements for vertical excavations. Mechanical locking and rotating device also known as twister, consisting of three elements coaxially connected one inside the other (1, 9, 19), by means of plugs and interpenetrating screws in slots formed on the cylindrical surfaces of the elements, in which a first upper element (1) is used to maneuver the device, a second central element (9) used to rotate the lining tube and a third element (19) deputy to the connection of for connecting to the end of the lining tube.