Gondola Apparatus Horizontal Positioning Traction Rope Load
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional gondola apparatuses for aerogenerator blade maintenance are complex, difficult to assemble or remove, and have inefficiencies in processability, economic efficiency, and workability, with issues related to maintaining horizontality and limited work range, leading to potential instability and rope overload.
Innovation Solution
A gondola apparatus with a front scaffold frame and paired side scaffold frames, rockable lifting devices, and three traction ropes for stable horizontal positioning, eliminating the need for redundant horizontality maintenance and allowing adjustment to blade shape, while reducing the load on individual ropes to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional gondola apparatuses use guide rails or rack rails attached to the tower, then the gondola can be raised or lowered to work positions, but the structure becomes massive and intricate, making assembly and removal difficult
Solution Approach 1:
The invention removes the guide rails and rack rails from the tower structure, extracting the complex guiding mechanism and replacing it with a simplified system using only lifters and traction ropes. The gondola is suspended directly from the nacelle through these elements, eliminating the need for extensive rail infrastructure while maintaining positioning capability.
Solution Approach 2:
The gondola is divided into modular components including the platform, lifters, and traction rope system. This segmentation allows for easier assembly and removal of individual components without requiring the complex integrated rail system, while still achieving reliable positioning through the distributed lifting mechanism.
2Ease of manufacture
If the gondola apparatus uses only lifters and traction ropes without guide rails, then assembly and removal become easier, but the inclination angles of traction ropes vary during movement, causing the gondola to incline
Solution Approach 1:
The invention applies different functional properties to different parts of the lifting system. The lifters are designed with specific geometric configurations and the traction ropes are arranged at optimized angles to compensate for the varying inclination during movement. This local optimization maintains gondola horizontality without requiring complex global control mechanisms.
Solution Approach 2:
The lifting system is designed to dynamically adapt to changing positions. As the gondola moves up and down the tower, the geometry of the lifter-traction rope-nacelle system naturally adjusts to maintain proper alignment and horizontality, eliminating the need for static guide rails while preserving stability throughout the range of motion.
3Adaptability or versatility
If the gondola apparatus uses laterally paired platforms to work on blades, then work coverage is improved, but the support frames must extend and contract, causing tension variations in traction ropes and increasing overload risk
Solution Approach 1:
The invention employs counterbalancing mechanisms where the weight distribution and geometric arrangement of the laterally paired platforms and support frames create counteracting forces. This balances the tension variations in the traction ropes during extension and contraction, preventing excessive overload while maintaining the adaptability needed for various blade work positions.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
There is provided a gondola apparatus including: a horizontal front scaffold frame (4) facing a back of the blade (3); first and second side scaffold frames (5) and (6) each horizontally movably attached to the front scaffold frame (4); a stabilizing member (7) attached over both sides of the front scaffold frame (4) such that the stabilizing member (7) is extendable and contractable, the stabilizing member (7) abutting on an outer surface of the tower (1); a first lifting device (9) provided to the front scaffold frame (4); second and third lifting devices (10) and (11) attached to the first and second side scaffold frames (5) and (6), respectively, such that the second and third lifting devices (10) and (11) are rockable; first and second drive devices (15) and (16) provided to the front scaffold frame 4, the first and second drive devices (15) and (16) being configured to horizontally drive the first and second side scaffold frames (5) and (6), respectively; and first, second, third traction ropes (12), (13), and (14) provided between the first, second, and third lifting devices (9), (10), and (11), and an origin on a side of the nacelle (2), respectively.