Drilling Device Rod Pusher for Deep Core String Handling
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Solution Overview
Problem
Existing drilling devices are inefficient in replacing defective drill heads and inserting or retrieving long drill strings, limiting their use for deep core drilling and geologic surveying due to limited guide table travel and speed.
Innovation Solution
A rod pusher device is attached to the guide frame, allowing non-positive connection and movement of drill rods, with transport rollers and guide rollers to facilitate quick and continuous insertion or removal of long drill strings, and an adjustment mechanism to maintain operational functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the guide table is used to move the drill string for deep core drilling, then the drilling depth can be increased, but the time required to replace defective drill heads and insert drill strings increases significantly
Solution Approach 1:
The system separates the drill string handling function from the guide table by introducing a rod pusher device. The rod pusher is divided into independent components (drive unit, pushing element, support structure) that can operate autonomously to move drill rods, while the guide table remains dedicated to precise positioning during drilling operations.
Solution Approach 2:
The rod pusher acts as an intermediary device between the drill string and the guide table. It provides a dedicated mechanism for moving drill rods into and out of the drilling position, eliminating the need for the guide table to perform both positioning and transport functions, thus reducing the time penalty associated with deep drilling operations.
2Ease of operation
If the guide table travels to move the drill string, then drill rods can be inserted or removed, but the speed of operation is too low for radar measurements and geologic surveying
Solution Approach 1:
The system segregates the high-speed transport function from the precision positioning function. The rod pusher with its drive unit and pushing element handles rapid drill string insertion and removal, while the guide table maintains its role in precise positioning during actual drilling operations.
Solution Approach 2:
The rod pusher serves as an intermediary that enables rapid drill string handling independent of the guide table's travel speed. This allows radar measurements and geologic surveying to be conducted at higher speeds since the drill string can be quickly inserted or removed without waiting for slow guide table movement.
3Area of stationary object
If the guide table has limited travel, then the device structure remains compact, but the ability to handle long drill strings for very deep wells is severely restricted
Solution Approach 1:
The system divides the drill string handling task from the guide table's travel function. The rod pusher provides a dedicated mechanism that can move long drill strings into and out of position without requiring the guide table to traverse the entire length, thus enabling very deep well drilling while maintaining a compact guide frame footprint.
Solution Approach 2:
The rod pusher acts as an intermediary that decouples the drill string length capability from the guide table travel distance. It provides a mechanical advantage system that can handle long drill strings through a compact structure, allowing very deep well applications without expanding the guide frame's footprint.
4Manufacturing precision
If the guide table moves slowly to maintain precision, then positioning accuracy is improved, but productivity for inserting and removing drill strings decreases
Solution Approach 1:
The system separates precision positioning from rapid transport functions. The rod pusher with its drive unit handles rapid drill string insertion and removal at high speed, while the guide table maintains precise positioning control during actual drilling operations, allowing both high productivity and high precision to coexist in different operational phases.
Solution Approach 2:
The rod pusher serves as an intermediary that enables high-speed drill string handling independent of the guide table's positioning speed. This allows rapid insertion and removal of drill strings for high productivity, while the guide table maintains slow, precise movement only when positioning is required, thus resolving the contradiction between speed and precision.
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 rapid and efficient insertion or removal of long drill strings, enhancing drilling device usability for deep core drilling and geologic surveying by providing sufficient friction and precise guidance for long drill strings.
Implementation Method 1
a rod pusher, which can be connected to the drill rod in a non-positive manner and is designed to move the drill rod in the longitudinal direction of the guide frame
Data Source
Figure 1~2
Figure 3~5
Figure 6~8
AI summary
The invention relates to a drilling device (1) comprising a guide frame (3), a guide table (4) which is mounted on the guide frame (3) so as to be movable in a longitudinal direction (5) of the guide frame (3), and a drilling drive (6) attached to the guide table (4), which includes a motor-driven clamping head for rotating a drill string (2) and a drill string guide (19) which enables a drill string (2) released by the clamping head to be pulled through the drilling drive (6), wherein a drill string pusher (9) is attached to the guide frame (3), which can be positively connected to the drill string (2) and is designed to move the drill string (2) in the longitudinal direction (5) of the guide frame (3).