Resilient Guide for Tower Crane Climbing Frame
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Solution Overview
Problem
Revolving tower cranes experience significant wear and juddering issues during climbing operations due to shape and dimensional tolerances, leading to unwanted movements and potential jamming, especially in windy conditions.
Innovation Solution
A self-adjusting longitudinally travelable guide with resiliently flexible transverse support elements that absorb transverse forces, allowing gentle movement over contour irregularities while maintaining tilt stability, using guide rollers or sliding metal plates with spring-loaded mechanisms to compensate for shape and dimensional tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If rigid transverse support elements are used to maintain tilt stability, then stability is improved, but wear and juddering increase due to inability to compensate for shape and dimensional tolerances
Solution Approach 1:
The support elements are designed with variable rigidity parameters - rigid enough to maintain tilt stability during normal operation, but flexible enough to adapt to shape and dimensional tolerances of the tower section. This parameter change allows the system to maintain stability while reducing wear and preventing juddering.
Solution Approach 2:
The guide system incorporates dynamic elements that allow the transverse support elements to move and adjust their position automatically in response to contour irregularities and dimensional tolerances. This dynamic adaptation maintains stable contact without causing unwanted movements or increased wear.
2Ease of operation
If the climbing frame is made longitudinally displaceably supported to allow free movement, then ease of operation is improved, but unwanted movements and juddering occur due to inability to maintain stable contact
Solution Approach 1:
The resilient transverse support elements provide automatic feedback to maintain optimal contact between the climbing frame and tower section. The elements self-adjust to contour irregularities and dimensional tolerances, ensuring stable contact throughout the longitudinal movement without requiring active control.
Solution Approach 2:
The resilient support elements are pre-configured with appropriate flexibility to cushion and absorb the effects of shape and dimensional tolerances before they can cause juddering or unwanted movements. This beforehand cushioning ensures smooth operation while maintaining contact stability.
3Productivity
If the climbing frame moves quickly to improve productivity, then productivity is improved, but wear increases and juddering occurs due to reduced ability to accommodate tolerances
Solution Approach 1:
The support elements are designed with optimized flexibility parameters that allow them to rapidly adapt to contour irregularities and dimensional tolerances even during high-speed movement. This enables the climbing frame to move quickly while maintaining stable contact and reducing wear.
Solution Approach 2:
The guide system incorporates dynamically responsive elements that can quickly adjust to maintain optimal contact during rapid climbing operations. This dynamic response ensures that even at high speeds, the system can accommodate shape and dimensional tolerances without causing juddering or increased wear.
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 wear and prevents juddering, ensuring smooth operation and extended service life by maintaining stable contact with the crane tower, even under varying load conditions.
Implementation Method 1
resiliently flexibly supported transverse support elements which can yield in a resiliently flexible manner transversely to the direction of travel
Implementation Method 2
guide rollers or sliding metal plates with spring-loaded mechanisms to compensate for shape and dimensional tolerances
Data Source
AI summary
The present invention relates to a climbing device for a revolving tower crane having a climbing frame movable along, the crane tower for climbing in and/or climbing down tower sections, wherein a guide is provided for the longitudinally movable support of the climbing frame with respect to the crane tower. In accordance with the invention, the guide has resiliently flexibly supported and/or resiliently flexible transverse support elements transversely to the travel direction of the climbing frame.