Rotary Feedthrough Connection Device with Adjustable Torque Support
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Solution Overview
Problem
Existing connection devices for rotating tools, such as earth drilling tools, are limited by their fixed drilling diameter compatibility and inconsistent contact pressure with drill hole walls, making them inflexible for varying tool diameters and soil materials.
Innovation Solution
A connection device with protrudable contact elements that can adjust torque support by extending or retracting to match different tool diameters and adjust contact pressure, featuring an axially displaceable actuating member converting to radial movement of contact elements, and a tensioning device for automatic positioning, allowing flexible use on various tools and drill rods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed torque support structure is used, then the device is simple in construction, but it cannot adapt to different tool diameters and soil materials
Solution Approach 1:
The contact elements are designed to be axially displaceable between a retracted position and a protruding position, allowing the torque support to dynamically adapt to different tool diameters. The actuating member converts axial movement into radial movement of contact elements, enabling the structure to change its configuration based on operational requirements while maintaining a relatively simple overall design.
2Adaptability or versatility
If fixed contact pressure is used, then the device structure is simple, but the contact pressure cannot be adjusted for different soil materials
Solution Approach 1:
The contact elements can be axially displaced to change their contact pressure with the drill hole wall. By moving the actuating member axially, the radial position and thus the contact pressure of the contact elements can be adjusted to match different soil materials, providing adaptability without requiring a complex pressure control system.
3Ease of operation
If contact elements are always extended for torque support, then torque support is continuous, but the device cannot be easily introduced or withdrawn from drill holes
Solution Approach 1:
The contact elements can be axially displaced between retracted and protruding positions. During introduction or withdrawal operations, the contact elements are retracted to minimize interference with the drill hole wall. During actual drilling, the actuating member is positioned to extend the contact elements for reliable torque support, thus providing both ease of operation and reliability when needed.
Data Source
AI summary
A connection device for forming a fluid supply to a rotating tool, in which is provided a rotary feedthrough which has a rotor and a stator, the rotor being supported in a rotating manner relative to the stator. Furthermore, a torque support is provided, which is connected in a rotationally fixed manner to the stator and has at least one contact element. The at least one contact element can be displaced between a retracted position and a protruding position, in which the contact element is extended compared to the retracted position for the purpose of torque support.