Electric Drilling Drive Control for Automatic Soil Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrically powered underground construction machines face inefficiencies due to high energy demands and the need for demand-oriented energy distribution, particularly in drilling operations where soil material adheres to the drilling tool, requiring manual control that is cumbersome and inefficient.
Innovation Solution
A drilling drive arrangement with a control unit that automatically switches between drilling and release modes for the electric motor, adjusting current and voltage to perform rotation-stop movements, and a system with multiple electric motors synchronized or asynchronous operation, torque and rotational speed control, and energy recovery modes to optimize energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual control is used to release soil material from the drilling tool, then the drilling machine can operate, but the operation becomes cumbersome and inefficient
Solution Approach 1:
The control unit automatically controls the electric motor to perform rotation-stop movements with or without reversal of direction of rotation, enabling the drilling tool to release soil material from itself without manual intervention. The system serves itself by autonomously executing the release cycle based on pre-programmed parameters.
Solution Approach 2:
The control unit dynamically adjusts the operating parameters of the electric motor, switching between different rotation speeds and torques during the drilling and release cycles. The system adapts its operational characteristics automatically to optimize both drilling efficiency and soil material release.
2Object-affected harmful factors
If electric motors are used for drilling operations, then noise and emissions are reduced, but energy consumption increases
Solution Approach 1:
The electric motor operates in periodic cycles alternating between drilling mode and release mode. During drilling, the motor delivers high torque at controlled speed; during release, it performs rotation-stop movements with direction reversals. This periodic operation optimizes energy utilization while maintaining quiet and clean operation.
Solution Approach 2:
The control unit changes the operational parameters of the electric motor according to the specific requirements of each phase. In drilling mode, parameters are optimized for penetrating the ground; in release mode, parameters are adjusted to facilitate soil material detachment through controlled movements and reversals.
3Productivity
If the drilling tool continuously rotates during drilling, then drilling efficiency is maintained, but soil material adheres to the tool requiring frequent stopping
Solution Approach 1:
The control unit is pre-programmed with the release cycle parameters before drilling operations begin. When soil material adherence is detected or at predetermined intervals, the system automatically initiates the release sequence without requiring manual intervention, minimizing downtime.
Solution Approach 2:
The drilling operation maintains continuous useful action by seamlessly alternating between drilling and release phases. The automatic control ensures minimal interruption between drilling cycles, keeping the drilling tool in productive operation while efficiently managing soil material release.
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 flexible, economical, and efficient operation by automating the control of electric motors for drilling and soil release, reducing manual effort and enhancing energy efficiency through adaptive power management and recovery.
Implementation Method 1
at least one rotary drive is arranged on the drilling drive carriage for rotatably driving a drilling tool for drilling into a ground, which rotary drive is configured as an electric motor
Implementation Method 2
in the release mode, current and/or voltage for supplying electrical energy to the at least one electric motor is automatically controlled such that the drilling tool repeatedly performs a rotation-stop movement with or without a reversal of the direction of rotation
Data Source
AI summary
The invention relates to a drilling drive arrangement for underground construction, with a drilling drive carriage which is mounted so as to be displaceable along a mast of a drilling rig for underground construction, wherein at least one rotary drive is arranged on the drilling drive carriage for rotary driving of a drilling tool for drilling into a ground, which rotary drive is configured as an electric motor. According to the invention, a control unit is provided for controlling the at least one electric motor with a drilling mode for drilling the drilling tool into the ground while removing soil material and a release mode for releasing soil material from the drilling tool, wherein, in the release mode, the current and/or voltage for supplying electrical energy of the at least one electric motor are automatically controlled in such a way that the drilling tool repeatedly performs a rotation-stop movement with or without a reversal of the direction of rotation.