Adjustable Lifting Lug Beam for Wind Turbine Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing lifting equipment for wind turbines faces instability issues due to deviations between the actual and theoretical gravity centers of components during the lifting process, leading to unbalanced lifting and unsatisfied stability requirements.
Innovation Solution
A lifting beam with an adjustable lifting lug system, featuring a connecting rod and nut mechanism that allows vertical movement and pretensioning pieces to prevent deformation and facilitate position adjustments, ensuring the stability of the lifting process by allowing for precise adjustment of the lifting point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lifting point is calculated according to the theoretical gravity center, then the lifting process can meet the requirements for stability in theory, but in actual manufacturing there is deviation between the actual gravity center and theoretical gravity center causing unbalance and instability
Solution Approach 1:
The lifting beam employs a movable lifting lug that can be adjusted along the beam length, transforming a static lifting system into a dynamic one. This allows the lifting point to be repositioned to match the actual gravity center of the load, compensating for manufacturing deviations and ensuring balanced lifting in practice
Solution Approach 2:
The system changes the positional parameter of the lifting lug along the beam. By adjusting the location of the lifting lug relative to the beam body, the system adapts to variations in the actual gravity center position, maintaining lifting stability despite manufacturing tolerances
2Duration of action of stationary object
If the connecting rod is rigidly connected to the lifting member, then the structure is simple, but the lifting member's elastic deformation causes the connecting rod to deform following it, reducing service life
Solution Approach 1:
A connecting member acts as an intermediary between the lifting member and connecting rod. This intermediary absorbs the elastic deformation of the lifting member through its own flexibility or movement capability, preventing direct transmission of deformation to the connecting rod and protecting it from fatigue damage
Solution Approach 2:
The connecting member provides a flexible connection that accommodates the lifting member's elastic deformation. This flexible connection allows relative movement or deformation without transmitting excessive stresses to the rigid connecting rod, extending its service life
3Reliability
If the lifting member position is fixed on the beam body, then the structure is simple, but it cannot accommodate deviations in gravity center position, reducing lifting stability
Solution Approach 1:
The lifting lug is designed to be movable rather than fixed, allowing it to be repositioned along the beam length. This dynamic capability enables adaptation to different load positions and gravity center deviations, maintaining lifting stability for various loading conditions
Solution Approach 2:
The adjustable lifting lug system provides universal applicability for different loading scenarios. By enabling position adjustment, a single lifting beam can accommodate various load weights and center positions, replacing the need for multiple fixed-position beams
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 adjustable lifting lug system enhances the service life of the connecting rod and reduces the required driving force, enabling stable and efficient lifting operations by accommodating deviations in the gravity center, thus improving the overall lifting process stability.
Implementation Method 1
In a case that the lifting member elastically deforms, by the action of the connecting member, at least the connecting rod can be prevented from deforming following the lifting member
Implementation Method 2
The lead screw in the lead screw nut mechanism is installed in a bearing seat, and a nut is fixed in the connecting frame. The rotation of the lead screw in the nut can drive the supporting frame to move left and right on a roller
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A lifting beam and a lifting device are provided according to the embodiments of the present application. The lifting beam includes a beam body, a lifting lug adjusting member and lifting lugs, wherein the beam body extends in a first direction; the lifting lug adjusting member includes a lifting member and an adjusting member connected with each other, the lifting member is movably fitted over the beam body, and a position of the lifting member with respect to the beam body in the first direction can be adjusted by the adjusting member; and the lifting lugs are arranged on the lifting member and are located above the beam body. The lifting device includes the lifting beam. In the embodiments of the present application, the beam body extends in the first direction, the lifting lugs are arranged on the lifting member, and the lifting member is able to adjust the position of the lifting member with respect to the beam body through the adjusting member, that is, a position of the lifting lugs with respect to the beam body is adjustable. Therefore, the position of the lifting lugs can be adjusted according to the lifting requirements at any time, that is, adjusting a position of a lifting point, to ensure the stability of the lifting process.