Anchor Rod Connection With Elastic Locking Ring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing anchor and drill rod connections are prone to unintentional loosening during twisting or rotary movements, leading to potential loss of connected parts, especially when drilling, due to inadequate locking mechanisms, which complicates the secure transmission of forces and increases the risk of thread damage.
Innovation Solution
The design incorporates an annular depression and groove system in the connecting sleeve with a locking ring that expands elastically to secure the connection, preventing unintentional loosening by clamping between thread turns, and features a ramp and stop to guide the locking ring into position without jamming, ensuring secure engagement and easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a threaded connection is used to connect anchor rods or drill rods, then the connection can be assembled and disassembled, but the connection is prone to unintentional loosening during twisting or rotary movements
Solution Approach 1:
A locking element is introduced as an intermediary component between the two threaded connections. This locking element engages with both threads and prevents relative rotational movement between the anchor rods or drill rods, thereby eliminating the risk of unintentional loosening while preserving the ability to intentionally assemble and disassemble the connection.
Solution Approach 2:
The locking element is designed to be movable during assembly, allowing it to be positioned onto one of the threads, and then becomes fixed in position to prevent loosening. The system transitions from a static threaded connection to a dynamic system where the locking element can be installed and then provides static prevention against loosening.
2Reliability
If locking elements are added to prevent unintentional loosening, then the reliability of the connection improves, but the device complexity increases
Solution Approach 1:
The locking element utilizes the existing thread parameters (pitch, diameter) of the anchor rods or drill rods. By designing the locking element to engage with these existing threads, no additional threading operations or complex fastening mechanisms are required, thus preventing loosening without significantly increasing device complexity.
3Stability of the object's composition
If a locking mechanism is implemented to prevent loosening, then the connection stability improves, but the difficulty of detecting and measuring the locking state increases
Solution Approach 1:
The locking element is designed with a visible indicator feature that changes appearance based on the locking state. When the locking element is properly positioned and engaged, it presents a specific visual appearance that allows operators to easily verify the locking state without complex measurement tools or procedures.
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
This solution maintains a secure connection under various loads during drilling and prevents accidental disconnection, reducing the risk of thread damage and allowing for safe removal and reconnection of anchor or drill rods without damaging the locking mechanism.
Implementation Method 1
a locking ring (9) which can be inserted into the recess (7, 8) and has an inner diameter which is larger than the inner diameter of the groove (7, 8)
Data Source
Figure 1~1b
Figure 2~2a
Figure 3~3a
AI summary
The invention relates to an anchor rod connection or drill rod connection, which comprises two anchor rods or drill rods (5, 6) to be connected to each other, which each have at least one end region provided with a thread, a connecting sleeve, which interacts with the end regions of the anchor rods or drill rods (5, 6) and which has a respective internal thread complementary to the threads of the anchor rods or drill rods (5, 6) starting from each of the free ends of the connecting sleeve, and a respective blocking element, which interacts with each anchor rod or drill rod (5, 6) and the associated complementary internal thread, wherein the connecting sleeve (1) has a respective annularly extending recess at a distance from a longitudinal center plane (4) of the connecting sleeve on each of two sides of the longitudinal center plane or each end region of an anchor rod or drill rod (5, 6) has an annular recess at a distance from a free end of the anchor rod or drill rod, each annular recess has a region of smaller depth (7) than the annular recess, which region of smaller depth is directed toward the longitudinal center plane (4) or the free region of the anchor rod or drill rod (5, 6), and a groove of greater depth (8) than the annular recess, which groove is spaced further than the annular recess with respect to the region of lower depth in the direction toward the longitudinal center plane (4) of the connecting sleeve (1) or the free ends of the anchor rod or drill rod (5, 6) and is adjacent to the respective annular recess, the blocking element is designed as blocking ring (9) that can be fitted into the recess, and an inside diameter of the blocking ring (9) is greater than an inside diameter of the groove and less than an inside diameter of the recess.