Rotor Turning Device Pin Grouping Control Method
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Solution Overview
Problem
Current rotor rotating devices in wind power generators face inefficiencies in position adjustment and rotation due to the need for frequent locking and unlocking of components, leading to low rotation efficiency and potential uncontrolled rotor movement.
Innovation Solution
A control method and device that group rotating units into two groups, allowing pins to be sequentially detached and re-fixed while maintaining others locked, and utilizing telescopic cylinders to drive the rotor rotation, ensuring continuous locked pins to prevent reverse rotation and improve efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If all pins are detached and re-fixed simultaneously during rotor rotation, then the rotation speed can be increased, but the rotor may experience uncontrolled reverse rotation and safety issues
Solution Approach 1:
The patent divides the pins into multiple groups (first group and second group) that are detached and re-fixed in sequence rather than simultaneously. This segmentation allows the rotor to be rotated in controlled stages, with each group of pins providing stability during its specific phase of the rotation process, thus preventing uncontrolled reverse rotation while enabling faster overall rotation.
Solution Approach 2:
The patent implements preliminary positioning actions by having the first group of pins detached and re-fixed to intermediate positions before the second group is adjusted. This preliminary action ensures that the rotor is progressively positioned to the correct orientation, maintaining control and preventing reverse rotation throughout the multi-stage process.
2Reliability
If multiple locking components are used to prevent reverse rotation, then the rotor position control is improved, but the device complexity increases
Solution Approach 1:
The patent makes the pins serve multiple functions: they act as both driving elements for rotor rotation and as locking components for position control. The same pins that drive the rotor forward also prevent reverse rotation when engaged, eliminating the need for separate locking mechanisms and reducing overall device complexity while maintaining reliability.
Solution Approach 2:
The patent combines the driving function and locking function into a single integrated mechanism. The pins simultaneously perform both roles - driving the rotor during detachment phases and locking the rotor during engagement phases - thereby simplifying the overall structure by merging what would traditionally require separate components.
3Ease of operation
If the rotor is rotated by pushing many times with the rotating device, then the position adjustment is achieved, but the rotation efficiency is reduced due to frequent locking and unlocking
Solution Approach 1:
The patent maintains continuous useful action by having the first group of pins always engaged with the rotor during the detachment and re-fixing process of the second group. This continuous engagement ensures uninterrupted rotor rotation and eliminates idle locking/unlocking cycles, thereby maintaining high rotation efficiency while achieving precise position adjustment.
Solution Approach 2:
The patent implements periodic action through the sequential, alternating detachment and re-fixing of different pin groups at regular intervals. This periodic adjustment pattern allows the rotor to rotate efficiently in stages while maintaining control, optimizing both rotation efficiency and position adjustment capability through rhythmic, predictable operations.
Data Source
AI summary
A rotor rotating device includes at least two rotating units; a movable end of a telescoping cylinder in each rotating unit is provided with a pin; the pin is releasably secured on a rotor. A control method for the rotor rotating device includes: dividing the at least two rotating units into two groups; first removing pins of a first group of rotating units from the rotor, and then re-securing the pins at another positions on the rotor; and after the pins of all the rotating units are re-secured, changing the state of the telescoping cylinders of all the rotating units, and driving the rotor to turn relative to a machine base. In this way, all the rotating units are sequentially unlocked, moved to a next working station, and re-locked on the rotor. A control device, and a rotor rotating system are further provided.