Ram Boring Device Rotary Piston Reversal Mechanism
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Solution Overview
Problem
Existing ram-boring devices require manual rotation and pressurized air line manipulation for reversing operations, which is cumbersome and inefficient.
Innovation Solution
A ram-boring device with a rotary piston drive connected to the control pipe and locking sleeve, allowing for mechanical reversal without manual rotation of the control pipe, utilizing a helical spring for forward motion and pressurized air for reverse motion, with a rotary piston controlled by instrument air for autonomous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual rotation and pressurized air line manipulation are used for reversing operations, then the device can be reversed, but the operation becomes cumbersome and inefficient
Solution Approach 1:
The reversing device automatically performs the reversal operation by utilizing the existing service air line to rotate the control pipe, eliminating the need for manual intervention. The system serves itself by using its own operational resources (service air) to accomplish the reversal task.
Solution Approach 2:
The patent replaces manual mechanical rotation with an automated pneumatic system. The service air line is configured to automatically rotate the control pipe through pneumatic pressure, substituting the manual mechanical operation with a pneumatic-driven automated process.
2Adaptability or versatility
If the control pipe is rotated manually for reversal, then the reversal can be achieved, but the complexity of operation increases
Solution Approach 1:
The service air line is designed to serve dual purposes: it provides pressurized air for the striking piston operation and simultaneously functions as a control mechanism for rotating the control pipe during reversal. This multi-functionality reduces the need for separate dedicated reversal mechanisms.
Solution Approach 2:
The system uses its own service air supply to automatically perform the reversal operation, eliminating the need for external manual operation or additional dedicated reversal air lines, thereby simplifying the overall control mechanism.
3Extent of automation
If pressurized air is applied to the rotary piston for reversal, then autonomous operation is achieved, but instrument air consumption occurs
Solution Approach 1:
The service air line is utilized for multiple functions: driving the striking piston and simultaneously rotating the control pipe for reversal. This eliminates the need for a separate instrument air line dedicated solely to reversal operations, thereby reducing overall air consumption.
Solution Approach 2:
The system recovers and reuses the service air that would otherwise be wasted during reversal operations. By routing this air through the rotary piston to achieve rotation, the system maximizes the utilization of available pneumatic resources and minimizes waste.
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 simple and efficient reversal without manual rotation of the control pipe or pressurized air line, reducing leak tightness requirements and minimizing instrument air consumption, allowing for a smaller air hose and autonomous operation.
Implementation Method 1
The longitudinal displacement of the control pipe for the forward operation thus is achieved by means of a helical spring
Implementation Method 2
a pressure fluid-driven striking piston in a device housing and a rotating reversing device of the striking piston
Implementation Method 3
the chamber of a rotary piston or rotary slide is connected to an instrument air or control fluid line in order to mechanically reverse the device using control fluid
Data Source
AI summary
A ram boring device has a pressurized-fluid driven striking piston in a device housing and a rotating reversing device configured to urge the striking piston from a forward operation to a reverse operation, in order to create oblique or horizontal bores in the ground. A piston chamber of a rotary piston drive is connected to a control fluid line.