Tube Hopper Inversion for Drilling Device Stroke Optimization
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Solution Overview
Problem
Existing drilling devices are limited by the length of the mast, restricting the stroke of the carriage and the working speed due to the obstructive placement of the tube hopper below the rotary drive, which necessitates frequent installation and de-installation of drilling tube sections.
Innovation Solution
The tube hopper is positioned above the drill drive and connected to the drilling tube, allowing the drill drive to move closer to the edge of the drill hole without obstruction, enabling longer drilling tube sections and reducing the number of section installations, with the hopper optionally rotating with the drilling tube and connected to the carriage for ease of filling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the tube hopper is positioned below the rotary drive, then the structure is simpler, but the carriage stroke is limited and working speed is reduced
Solution Approach 1:
The tube hopper is inverted from its conventional position below the rotary drive to above the rotary drive. This inversion eliminates the obstruction that limited carriage stroke, allowing the carriage to move closer to the drill hole edge and enabling longer drilling tube sections to be used, thereby increasing working speed without significantly increasing structural complexity
2Ease of operation
If the tube hopper is positioned below the rotary drive, then easier to access for filling, but frequent section installation and de-installation is required
Solution Approach 1:
By inverting the tube hopper position to above the rotary drive, the carriage can travel farther without obstruction, enabling longer drilling tube sections to be used. This reduces the number of sections needed and consequently reduces the frequency of installation and de-installation operations, saving time despite the hopper being less accessible for filling
3Productivity
If the carriage stroke is increased, then longer drilling tube sections can be used, but the mast length must be increased
Solution Approach 1:
The tube hopper is extracted from the carriage assembly and repositioned above the rotary drive. This separation allows the carriage to achieve a longer stroke without requiring a longer mast, as the hopper no longer constrains the carriage movement. The mast length remains unchanged while the effective working stroke is increased
Data Source
AI summary
The invention relates to a drilling device for producing a drilling column in the soil comprising a mast, a drill drive arranged on a carriage, which is movably supported along the mast, a drilling tube which can be driven in a rotating manner by the drill drive and is movable along the mast in order to produce a drill hole, and a tube hopper that is connected to the drilling tube and comprises a storage space for filling material to fill the drill hole during the extraction of the drilling tube. In accordance with the invention provision is made for the tube hopper to be arranged in the drilling direction above the drill drive and to be connected to the drilling tube. The invention further relates to a method for producing a drilling column in the soil.