Drilling Device Rotary Coupling for Detachable Vibration Drive
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Solution Overview
Problem
Existing drilling devices for earth or rock drilling with vibration drives are specialized and costly due to their complex structures, limiting their availability and increasing equipment costs.
Innovation Solution
A drilling device with a detachable vibration drive that uses a rotary coupling with a clamping mechanism to transmit vibrations to the drill drive shaft, allowing for optional vibration assistance during drilling and easy decoupling to reduce internal friction and maintenance, which can be retrofitted onto existing devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a vibration drive is integrated into the drilling device, then drilling efficiency is improved, but device complexity and equipment costs increase
Solution Approach 1:
The drilling device is divided into separate functional modules: a standard drill drive and a detachable vibration drive. The vibration drive can be coupled to or decoupled from the drill drive shaft independently, allowing the drilling device to operate in both vibration-assisted and non-vibration modes. This segmentation enables vibration functionality without permanently increasing device complexity.
Solution Approach 2:
The coupling between the vibration drive and drill drive shaft is designed to be dynamically adjustable through the clamping device. The vibration drive can be engaged when needed for improved drilling efficiency and disengaged when not required, making the system adaptable rather than statically complex.
2Adaptability or versatility
If a vibration drive is permanently integrated, then drilling with vibrations is enabled, but maintenance efforts and equipment costs increase
Solution Approach 1:
The vibration drive is designed as a separate, detachable module that can be removed from the drill drive shaft. This segmentation allows the vibration drive to be easily serviced, repaired, or replaced without affecting the main drilling system, thereby reducing overall maintenance efforts.
Solution Approach 2:
The detachable design allows the vibration drive to be separated from the drilling device when not in use or when requiring maintenance. This enables independent servicing of the vibration component while preserving the core drilling system, reducing cumulative maintenance burden.
3Device complexity
If a detachable vibration drive is used, then device complexity is reduced, but connection reliability may worsen
Solution Approach 1:
The clamping device creates a secure mechanical connection between the vibration drive and the drill drive shaft by engaging with the rotary coupling. When clamped, the connection achieves sufficient reliability for vibration transmission while maintaining the benefit of detachability. The merging of these components during operation ensures reliable power and vibration transmission.
Solution Approach 2:
The rotary coupling employs curved or rounded engagement surfaces that facilitate smooth engagement and disengagement while maintaining reliable mechanical connection during operation. The curved geometry of the coupling pieces ensures proper alignment and stable force transmission between the detachable components.
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
The solution enables efficient drilling with targeted vibrations, reduces maintenance efforts, and extends the service life of the drive arrangement while providing an affordable option for vibration assistance in drilling devices.
Implementation Method 1
an oscillating drive which generates a vibration formed in a drilling direction is arranged behind the drill driver and connected to the drill pipe for transmission of a vibration
Implementation Method 2
a clamping device which is designed for releasably clamping the second coupling piece, wherein in the clamped state an axially fixed connection between the vibration drive and the second coupling piece is formed
Data Source
Figure 1
AI summary
The invention relates to a drilling device for drilling into earth or rock, comprising a mast, a drill drive with a drill drive shaft for rotating a drill string, a drill drive carriage which is movably mounted along the mast and on which the drill drive is arranged, and a vibration drive designed to generate a vibration, arranged behind the drill drive in a drilling direction and connected to the drill string for transmitting a vibration, wherein a rear connecting end of the drill drive shaft of the drill drive or the drill string projects rearward from the drill drive. According to the invention, a rotary coupling is provided at the connecting end, comprising a first coupling element which is axially fixed and rotationally fixed to the connecting end of the drill drive shaft, and a second coupling element which is axially fixed and rotatable relative to the first coupling element.Furthermore, it is provided that the vibration drive has a clamping device which is designed for the releasable clamping of the second coupling piece, wherein in the clamped state an axially fixed connection is formed between the vibration drive and the second coupling piece.