Auger Helix Gap Clearing Device with Passive Rotating Guide Tube
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Solution Overview
Problem
Existing clearing devices for auger helix gaps require complex energy supply and precise movement synchronization, leading to increased risk of damage and reduced service life due to axial and transverse forces on bearings.
Innovation Solution
A device with a rotatable guide tube and detachably attached clearing element, where the guide tube is axially fixed and the clearing element rotates passively with the auger's pulling motion, eliminating the need for active rotation and energy supply, and featuring adjustable and wear-resistant components for effective material removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotating motor drives the clearing element to revolve around the auger, then the helix gaps can be freed of remaining ground material, but energy supply via hydraulic or electrical lines is required which increases complexity and risk of damage
Solution Approach 1:
The clearing element is designed to rotate passively around the auger through interaction with the auger's helix geometry during the auger's pulling movement, eliminating the need for external rotary drives, hydraulic lines, or electrical connections. The auger's own motion provides the rotational force needed for clearing.
Solution Approach 2:
The invention removes the complex energy supply system (rotating motor, hydraulic lines, electrical lines) from the clearing device, retaining only the essential mechanical clearing function that can be achieved through passive rotation driven by the auger's movement.
2Reliability
If the clearing element is driven by a rotating motor with precise movement synchronization, then clearing effectiveness is improved, but the risk of damage to the clearing element and auger increases due to synchronization requirements
Solution Approach 1:
The clearing element rotates passively around the auger through interaction with the auger's helix geometry during the auger's pulling movement, eliminating the need for external rotary drives, hydraulic lines, or electrical connections. The auger's own motion provides the rotational force needed for clearing.
Solution Approach 2:
The clearing element rotates periodically around the auger in sync with the auger's pulling movement, creating a rhythmic clearing action that effectively removes ground material without requiring precise continuous synchronization control, thereby reducing damage risk.
3Device complexity
If the clearing device uses a stationary guide tube with a pivoting clearing plate, then the design is simple, but the clearing effectiveness is limited compared to rotary clearing elements
Solution Approach 1:
The guide tube is designed to rotate around the auger during the clearing operation, transforming the static clearing plate design into a dynamic system where the clearing element actively rotates to engage and clear the helix gaps, significantly improving clearing effectiveness while maintaining reasonable design simplicity.
4Productivity
If the auger is pulled through the ground to form a drilled hole, then the hole is formed, but ground material remains on the auger helixes requiring subsequent clearing
Solution Approach 1:
The clearing operation is performed immediately after the auger is pulled from the ground, while the ground material is still accessible on the helixes. This preliminary clearing action ensures complete removal of ground material before the auger is stored or reused, maintaining hole quality without significantly reducing drilling productivity.
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
Enables reliable and long-lasting clearing of auger helix gaps without complex control or energy supply, ensuring automatic synchronization of movements and reduced wear on components.
Implementation Method 1
by means of a pulling procedure of the auger, the clearing element, together with the guide tube, can be caused to rotate about the drilling axis
Implementation Method 2
the clearing element which engages in the helix gap and is mounted on the retainer so as to be rotatable about a drilling axis
Data Source
AI summary
The invention relates to a device for clearing a helix gap of an auger, comprising a retainer for holding the device on a mast of a drill, a guide tube which surrounds the auger in portions and is mounted on the retainer, and a clearing element which engages in the helix gap and is mounted on the retainer so as to be freely rotatable about the drilling axis. According to the invention it is provided for the guide tube to be mounted on the retainer so as to be freely rotatable about the drilling axis, for the clearing element to be firmly attached to the rotatably mounted guide tube, for the guide tube to be axially fixed in the direction of the drilling axis, for the purpose of clearing, and for the clearing element, together with the guide tube, to be able to be caused to rotate about the drilling axis by means of a pulling procedure of the auger for the purpose of clearing the auger. The invention further relates to a method for making a drilled hole in the ground using a drill, wherein the device according to the invention is used.