Method and device for erecting a tower for a wind energy plant
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Solution Overview
Problem
The construction of concrete wind power pylons is hindered by the slow hardening of compensating materials at low temperatures, leading to prolonged stoppage times and increased labor and safety risks due to manual positioning and release of heavy pylon segments.
Innovation Solution
A lifting apparatus with automatic or remotely controlled release mechanisms and a centering bar system, along with a heating apparatus to facilitate faster hardening of compensating materials, are introduced to streamline the construction process by stabilizing and positioning pylon segments efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual positioning and release of heavy pylon segments is used, then labor intensity and safety risks increase, but automation and productivity remain low
Solution Approach 1:
The patent replaces manual mechanical positioning with an automated lifting apparatus that uses a motor-driven spool to control the lowering of pylon segments. The crane performsç² positioning while the lifting apparatus handles fine positioning automatically, eliminating the need for workers to manually position 5-120 ton segments and reducing construction time.
Solution Approach 2:
The lifting apparatus is designed to automatically release the pylon segment onto the lower segment without requiring manual intervention. The motor-driven spool automatically disengages and releases the segment, allowing the system to serve itself in the positioning and release process, thereby improving productivity and reducing labor intensity.
2Manufacturing precision
If compensating material is used to level and fix pylon segments, then positioning precision improves, but hardening time increases at low temperatures
Solution Approach 1:
The patent replaces the waiting process for compensating material hardening with an active motor-driven positioning system. The motor-driven spool allows the lifting apparatus to actively adjust and hold the pylon segment in the correct position without relying on the hardening of compensating material, thereby eliminating the time loss associated with low-temperature hardening delays.
Solution Approach 2:
The lifting apparatus performs preliminary positioning of the pylon segment using the motor-driven spool before the compensating material is even applied. This preliminary action ensures the segment is correctly positioned in advance, and the apparatus can maintain this position independently of the compensating material's hardening state, reducing overall construction time.
3Force
If carrier loops are screwed into pylon segments for lifting, then lifting capability is achieved, but removal complexity and labor requirements increase
Solution Approach 1:
The lifting apparatus is designed to automatically unscrew and remove the carrier loops from the pylon segment after lifting is complete. The motor-driven spool that was used to lower the segment also performs the unscrewing action, allowing the system to service itself by removing its own lifting attachments without requiring additional manual labor or complex removal procedures.
Solution Approach 2:
The patent merges the lifting function and the carrier loop removal function into a single integrated lifting apparatus. The same motor-driven spool mechanism that provides lifting capability also performs the unscrewing and removal of carrier loops, combining multiple functions into one device and thereby reducing overall system complexity and labor requirements.
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 solution reduces construction time, minimizes labor and safety risks, and ensures precise positioning of pylon segments, thereby enhancing the efficiency and safety of wind power installation construction.
Implementation Method 1
a heating apparatus for heating an annularly peripherally extending junction region between a tubular pylon segment with a peripherally extending segment wall and a pylon foundation
Data Source
AI summary
The present invention concerns a lifting apparatus, in particular a cross lifting beam, for lifting a first pylon segment of a concrete pylon of a wind power installation by means of a crane, including at least one fixing means for fixing the pylon segment to the lifting apparatus, and at least one release apparatus for releasing a connection between the lifting apparatus and the pylon segment.