Elastic Couple Rotor Turning Gear for Vertical Hydroelectric Sets
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Solution Overview
Problem
Existing automatic rotor turning gears for vertical hydroelectric generating sets have issues with low concentricity, unstable driving moments, and deformation due to rigid connections, leading to inefficient and unsafe operation.
Innovation Solution
An elastic couple rotor turning gear with an elastic support and U-shaped casing provides a flexible connection, using speed reducers and electric motors symmetrically positioned to ensure stable and precise rotation, with adjustable screws for concentricity and a sliding bearing for smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid connection is used between the automatic rotor turning gear and the frame of the rotating device, then the structure is stable, but any deviation between axes causes excessive and unstable driving moment of force
Solution Approach 1:
The patent changes the rigidity parameter of the connection between the turning gear and the frame from rigid to elastic. The elastic support allows the connection to maintain stability while accommodating axis deviations through elastic deformation, preventing excessive driving moments.
Solution Approach 2:
The patent introduces dynamic flexibility into the system by using an elastic support that can adapt to position deviations. This elastic connection dynamically absorbs deviations between the turning gear axis and rotor axis, maintaining stable operation.
2Adaptability or versatility
If the pinion gear is assembled in a suspension arm structure, then the structure is flexible, but the structure is easily deformed under stress to cause incorrect engagement between gears
Solution Approach 1:
The patent segments the suspension arm structure into multiple parts connected by elastic elements. This segmentation allows each segment to independently accommodate stress without causing cumulative deformation that would misalign the gear engagement.
Solution Approach 2:
The patent changes the mechanical properties of the suspension arm by incorporating elastic supports, transforming it from a rigid structure prone to stress concentration into a flexible structure that distributes stress evenly, maintaining gear engagement precision.
3Device complexity
If the motor is turned along with the device, then the structure is compact, but wires may be twisted
Solution Approach 1:
The patent introduces an elastic support as an intermediary between the motor and the rotating device. This elastic connection allows relative rotation while accommodating wire length changes, preventing wire twisting while maintaining structural compactness.
4Device complexity
If manual driving and came hauling methods are used, then the device is simple, but safety is low and labor intensity is high
Solution Approach 1:
The patent implements an automatic rotor turning gear that self-regulates the driving force through elastic supports. The system automatically maintains even driving force and accurate stop positions without requiring manual intervention, improving safety while reducing labor intensity.
Solution Approach 2:
The patent replaces the manual mechanical driving system with an automated system using electric motors and elastic supports. This substitution eliminates the safety hazards and high labor intensity associated with manual came hauling while maintaining operational control.
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 elastic couple rotor turning gear reduces labor intensity, enhances adjusting accuracy and efficiency, and ensures safer operation by eliminating deformation and improving self-stabilization, allowing for precise and smooth rotation of the rotor.
Implementation Method 1
When a little deviation occurs between the center of the elastic couple rotor turning gear and the driven rotor, a radial resisting stress caused by this deviation is eliminated by the elastic support 5
Data Source
AI summary
An elastic couple barring apparatus (i.e., an elastic couple rotor turning gear) is a special tool to drive a rotor by elastic couple for adjusting a shafting center of a vertical hydroelectric generating set and other rotating devices. The elastic couple rotor turning gear is characterized in that an elastic support is mounted on a frame of the driven device, a casing being connected to the elastic support, a casing cover being firmly fixed on the casing, a speed reducer and an electric motor being installed on the cover, an output shaft of the speed reducer extending into the casing under the casing cover, the output shaft having a pinion gear mounted thereon and meshed with a gear body of a bull gear positioned in the casing, the bull gear being connected to a shaft coupling through parallel keys via a key seat or an upright post, and the shaft coupling being fixed on a rotor of the driven device. The advantages of the invention is that the structure is more reasonable, the concentricity may be adjusted more conveniently, the elastic connection makes operation easy and vibration small, deformation caused by suspending arms is eliminated, and operation's accuracy and precision are improved because the gears may be meshed and operated smoothly.