Articulated Vehicle Exhaust Transfer with Variable-Length Pipe Separation
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Solution Overview
Problem
Existing exhaust gas transfer systems in mobile work machines with articulated swivel joints are complex, prone to wear, and costly due to their design, leading to frequent maintenance and potential damage during extreme maneuvers.
Innovation Solution
A variable-length exhaust pipe system with drive shafts and flexible hoses, incorporating glass fiber reinforced hoses and a separating device with stop elements and bayonet fitting, ensures leak-free gas transfer and controlled separation to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid exhaust gas transfer system is used between front and rear carriages, then gas transfer reliability is improved, but the system cannot accommodate steering movements and articulation, leading to connection failure
Solution Approach 1:
The patent employs flexible hoses instead of rigid pipes to connect the exhaust gas transfer system between front and rear carriages. These flexible hoses can bend and deform to accommodate the articulation and steering movements of the vehicle while maintaining the gas transfer function, thus resolving the contradiction between reliability and adaptability.
Solution Approach 2:
The exhaust gas transfer system incorporates movable connection points and flexible components that can dynamically adjust their position and orientation during vehicle operation. This dynamic design allows the system to maintain gas transfer integrity while adapting to changing geometric relationships between carriages during steering and articulation.
2Adaptability or versatility
If a flexible hose connection is used to accommodate steering movements, then adaptability is improved, but wear and tear increases leading to frequent maintenance
Solution Approach 1:
The exhaust gas transfer system is divided into multiple segments including flexible hoses, rigid pipe sections, and articulated joints. This segmentation allows each component to perform its optimal function - flexible hoses handle articulation, rigid sections maintain structural integrity, and joints provide controlled movement - thereby reducing overall wear and improving durability.
Solution Approach 2:
The system incorporates protective elements and wear-resistant designs in advance to prevent damage during extreme maneuvers. The flexible hoses are designed with sufficient length and appropriate routing to prevent excessive bending stresses, and connection points are positioned to minimize wear during normal and extreme operating conditions.
3Reliability
If complex exhaust gas transfer systems with multiple components are used, then gas transfer reliability is improved, but device complexity and production cost increase
Solution Approach 1:
The patent combines multiple functions into integrated components where possible. For example, the exhaust gas transfer system is designed to work in conjunction with the existing articulation mechanism of the vehicle, sharing structural elements and connection points. This merging approach maintains gas transfer reliability while reducing the number of separate components and simplifying the overall system.
4Adaptability or versatility
If the exhaust gas transfer system is designed for extreme maneuverability, then adaptability to all positions is improved, but wear on connection points increases significantly
Solution Approach 1:
The flexible hoses and connection points are pre-positioned and pre-configured during system design to accommodate the full range of expected vehicle articulation and steering movements. This preliminary action ensures that during actual operation, the components operate within their optimal ranges without excessive stress or wear, even during extreme maneuvers.
Data Source
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AI summary
The present invention relates to a device for transferring exhaust gases between a front and rear carriage of a mobile working machine, in particular a dump truck, separated by a pivot joint, comprising a pipe section of variable length for conveying exhaust gases, a first flexible hose that interacts with a first end region of the pipe section to introduce exhaust gases into the pipe section, and a second flexible hose that interacts with a second end region of the pipe section to discharge exhaust gases from the pipe section.The device is characterized in that a first drive shaft is provided in the first end region, the distal end of which is designed for rigid attachment to a mounting section of the front or rear carriage of the working machine, and a second drive shaft is provided in the second end region, the distal end of which is designed for rigid attachment to a mounting section of the front or rear carriage of the working machine, wherein the first hose accommodates the first drive shaft and the second hose accommodates the second drive shaft.