Tapered Roller Bearing Seating Ring for Accurate Preload Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wind turbine drive train configurations require complex maintenance procedures for replacing spherical roller bearings, which can be time-consuming and disruptive, especially when disconnecting the mainshaft is necessary.
Innovation Solution
A roller seating actuator and ring assembly tool is used to preload and position tapered roller bearings within a split pillowblock assembly, allowing for axial engagement of rolling elements with a race rib, facilitating efficient installation and maintenance without disconnecting the mainshaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spherical roller bearings are replaced using conventional methods, then bearing replacement can be performed, but maintenance time and operational downtime increase significantly
Solution Approach 1:
The bearing assembly is divided into separable components including the bearing, clamping plate, and housing sections. This segmentation allows the bearing to be replaced independently without removing the entire mainshaft assembly, enabling maintenance while the turbine remains connected and operational.
Solution Approach 2:
The clamping plate is pre-configured with threaded sections and adjustment mechanisms that allow for preliminary positioning and securing of the bearing assembly. This preliminary setup enables faster bearing replacement by eliminating the need for complex on-site alignment and mounting procedures.
2Reliability
If tapered roller bearings are preloaded to optimize load zones, then bearing life and performance improve, but the complexity of the installation and adjustment process increases
Solution Approach 1:
The clamping plate incorporates an adjustment mechanism that allows operators to self-regulate the preload force on the tapered roller bearings through threaded fasteners. This self-adjusting feature enables precise control of bearing preload without requiring complex external equipment or specialized tools, simplifying the installation process while ensuring optimal load zone distribution.
3Manufacturing precision
If rolling elements are properly positioned and pressed against the rib during preloading, then bearing alignment and performance are optimized, but additional assembly tools and procedures are required
Solution Approach 1:
A positioning tool serves as an intermediary device during assembly, featuring a ring with engagement elements that interface with the bearing ribs. This tool mediates the positioning process by mechanically guiding the rolling elements into correct alignment with the raceways and pressing them against the ribs during preload application, ensuring precise bearing alignment without requiring complex measurement and adjustment procedures.
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
This solution enables quick and efficient replacement of bearings, improving maintenance efficiency and extending bearing life by ensuring proper alignment and preload of tapered roller bearings, reducing downtime and operational costs.
Implementation Method 1
A biasing member is positioned between the roller seating actuator and the roller seating ring and biases the roller seating ring away from roller seating actuator such that the distal end of the roller seating ring engages and presses the rolling element axially into engagement with a rib of a race of the bearing assembly.
Data Source
AI summary
An assembly tool (104) for positioning the rolling elements (150, 155) of a bearing assembly (100) during a preloading operation includes a roller seating actuator (400) configured to be removably coupled to a portion of the bearing assembly during the preloading operation, and a roller seating ring (420) movably coupled to the roller seating actuator. The roller seating ring includes a distal end (440) configured to engage an end of a rolling element of the bearing assembly. A biasing member (460) is positioned between the roller seating actuator and the roller seating ring and biases the roller seating ring away from roller seating actuator such that the distal end of the roller seating ring engages and presses the rolling element axially into engagement with a rib (145) of a race of the bearing assembly.