Wind Turbine Rotor Hub Cam Adjustment Mechanism
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Solution Overview
Problem
Existing wind power installations face issues with noise generation due to rotor blade oscillations and have high resource and maintenance requirements, along with increased structural space needs, due to suboptimal angle adjustment devices.
Innovation Solution
The angle adjustment device uses coupled disk cams via a coupling element to ensure synchronous adjustment of rotor blades, reducing oscillations and requiring less structural space, thus minimizing noise and maintenance costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional angle adjustment devices are used for rotor blades, then the structural space requirement increases and maintenance requirements increase, but the noise generation and oscillation control are not optimized
Solution Approach 1:
The patent combines multiple disk cams into a single integrated disk cam structure that controls multiple rotor blades simultaneously. This merging of previously separate adjustment mechanisms into one unified device reduces the number of individual components, decreases structural space requirements, and minimizes noise generation while maintaining effective oscillation control through synchronized blade adjustment.
2Reliability
If multiple separate adjustment mechanisms are used for each rotor blade, then the maintenance requirements and resource consumption increase, but the synchronous control of rotor blades is achieved
Solution Approach 1:
The patent merges multiple separate adjustment mechanisms into a single integrated disk cam device that simultaneously controls multiple rotor blades. This unified structure maintains synchronous control reliability through its geometric design while significantly reducing maintenance requirements by eliminating the need to service multiple separate mechanisms.
Solution Approach 2:
The integrated disk cam device performs multiple functions simultaneously: it controls the pitch angle of multiple rotor blades, ensures synchronous adjustment across all blades, and provides inherent oscillation damping. This multi-functionality maintains reliable synchronous control while reducing the overall complexity and maintenance burden compared to multiple separate mechanisms.
3Manufacturing precision
If traditional adjustment devices are used, then the structural space within the rotor hub increases, but the control precision of rotor blade alignment is achieved
Solution Approach 1:
The patent employs a compact nested arrangement where the disk cam mechanism is integrated within the rotor hub structure. The disk cam and control elements are arranged in a space-efficient configuration that fits within the existing rotor hub volume, maintaining precise alignment control while minimizing the additional structural space required.
Solution Approach 2:
The patent utilizes the radial and axial dimensions within the rotor hub to arrange the disk cam mechanism in a three-dimensional configuration that maximizes space utilization. By distributing components across different spatial dimensions rather than requiring extended linear space, the device maintains precise control capability while fitting within the constrained rotor hub volume.
Data Source
AI summary
A wind power plant has at least one rotor. The rotor has at least two rotor blades and each rotor blade is rotatable about a substantially radially aligned adjustment axis. At least one angle adjustment device is provided for adjustment of the rotor blades. The angle adjustment device has a control disk and at least two cam disks interacting with the control disk. Each cam disk is rotatably mounted about a rotation axis. The rotation axis of the respective cam disk coincides, and is in particular superimposed, together with the respective adjustment axis of the respective rotor blade. The noise development, the maintenance expense, and/or costs of a wind power plant are reduced in that the cam disks are functionally effectively permanently coupled via at least one coupling element.