Welding Machine Motor Decoupling for Fast Repositioning
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Solution Overview
Problem
Existing orbital welding devices often require long idle times and significant personnel involvement due to slow motor speeds and complex repositioning processes, especially when moving the welding device on a guide belt.
Innovation Solution
The orbital welding device features a chassis with orthogonal wheel groups and a motor decoupling mechanism that allows for quick repositioning by decoupling the drive element from the guide belt, eliminating motor resistance and enabling safe, efficient repositioning without disengaging from the belt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the welding device is moved on the guide belt using a motor-driven force transmission element, then the welding device can be repositioned along the guide belt, but the repositioning process requires significant personnel involvement and time due to motor resistance and slow motor speeds
Solution Approach 1:
The patent applies the dynamics principle by making the force transmission element dynamically reconfigurable - it can be selectively coupled to or decoupled from the drive motor depending on operational needs. During repositioning operations, the force transmission element is decoupled from the motor, transforming the system from a motor-driven configuration to a free-moving configuration, thereby eliminating motor resistance and enabling rapid manual repositioning without time loss.
Solution Approach 2:
The patent segments the drive system into two independent functional components: the drive motor and the force transmission element. This segmentation allows the force transmission element to be independently controlled - it can engage with the guide belt for propulsion while being decoupled from the motor, or vice versa. This segmentation resolves the contradiction by enabling the force transmission element to serve different functions (motor-driven movement vs. free manual repositioning) without being permanently bound to the motor.
2Speed
If the force transmission element remains engaged with the guide belt during repositioning, then the welding device can be moved along the guide belt, but motor resistance prevents safe and efficient repositioning
Solution Approach 1:
The patent applies the extraction principle by removing the motor resistance from the repositioning process. The force transmission element is extracted from the motor-driven system during repositioning operations, allowing it to interact with the guide belt independently of the motor. This extraction eliminates the harmful force (motor resistance) while preserving the useful function (movement along the guide belt), enabling safe and efficient repositioning at higher speeds.
3Loss of time
If the motor operates at high speed for repositioning, then repositioning time is reduced, but control precision and safety are compromised
Solution Approach 1:
The patent applies the self-service principle by enabling the welding device to perform its own repositioning without motor assistance. When the force transmission element is decoupled from the motor, the device can be manually repositioned along the guide belt using its own chassis and wheel groups. This self-service capability eliminates the need for high-speed motor operation, maintaining control precision and safety while still achieving rapid repositioning through direct manual manipulation.
Data Source
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AI summary
The welding device according to the invention preferably comprises at least one chassis (4) for coupling the welding device (1) to a guide belt (6), wherein the chassis (4) has at least a first wheel group (72) and a second wheel group (77), wherein the first wheel group (72) and the second wheel group (77) are spaced apart from each other at least orthogonally to the direction of transport, and wherein the first wheel group (72) and the second wheel group (77) can be arranged orthogonally to the direction of transport in at least two different relative positions to each other, a drive device (15) for moving the welding device (1) relative to the guide belt (6), wherein the drive device (15) has at least one motor (86) and a power transmission element (85) that can be brought into contact with the guide belt (6), and a motor decoupling device (100) for repositioning at least one element, in particular the power transmission element (85).the drive unit (15), wherein, by means of the motor decoupling device (100), in at least one relative position between the first gear group (72) and the second gear group (77), in particular in an operating state, at least one element of the drive unit (15) can be repositioned such that a movement of the welding device (1) along the guide belt (6) can be decoupled from an operation of the drive unit (15), in particular the power transmission element (100) is spaced apart from the guide belt (6).