Cable Supply System for Cable-Guided Drilling
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Solution Overview
Problem
Current cable-guided drilling methods are time-consuming and cost-intensive due to the need for repeated disconnection and reconnection of cables when adding or changing drill pipe sections, especially at greater depths or under inaccessible obstacles.
Innovation Solution
A cable supply system with a length of at least two rod sections, featuring a contact device for constant electrical contact, allowing only one connection to the existing drill pipe cable when extending the drill pipe, eliminating the need for repeated cable connections and simplifying the process by using a reel and guide rollers for efficient cable management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If cable-guided drilling is used for great depths and inaccessible obstacles, then measurement precision is improved, but device complexity increases due to cable management requirements
Solution Approach 1:
The cable supply device automatically feeds the cable through the drill pipe sections as they are connected, eliminating the need for manual cable handling and connection operations. The cable is paid out from the supply device and guided through the drill pipe automatically during the drilling process.
Solution Approach 2:
The cable is pre-loaded onto the cable supply device before drilling begins. This preliminary preparation ensures that when drill pipe sections are added during drilling, the cable is already in position and can be automatically fed through without requiring separate connection operations.
2Ease of operation
If cable connections are made manually for each pipe section, then ease of operation is maintained, but productivity decreases due to time-consuming connection processes
Solution Approach 1:
The cable supply device performs the cable feeding operation automatically without requiring manual intervention. The device self-regulates the cable payout and guides it through the drill pipe sections as they are connected, transforming a manual operation into an automated process that increases productivity.
Solution Approach 2:
The manual mechanical operation of connecting and managing cables is replaced by an automated cable supply device with mechanical feed mechanisms, guide rollers, and tension control systems that automatically manage the cable throughout the drilling process.
3Adaptability or versatility
If repeated cable disconnection and reconnection is performed, then adaptability to pipe section changes is improved, but loss of time increases
Solution Approach 1:
The cable supply device maintains continuous cable feeding throughout the drilling process, even as drill pipe sections are added or replaced. The cable remains under tension and continuously fed through the drill pipe, eliminating interruptions and repeated connection operations that would otherwise be necessary when changing pipe sections.
Solution Approach 2:
The cable supply device acts as an intermediary between the cable and the drill pipe sections, mediating the cable's passage through multiple pipe sections. This intermediary device manages the cable routing and connection operations, allowing pipe sections to be changed without requiring direct manual cable handling and connection at each interface.
Data Source
Figure 1~2
AI summary
The invention relates to an earth drilling device for cable-guided drilling with a drive for connecting and/or moving drill rod sections along a drill rod axis, wherein a cable supply for receiving a cable with a length of at least two drill rod sections and a contact device for electrically contacting one end of the cable of the cable supply are provided.