Bearing Screw Transfer with Adjustable Preload and Stable Contact
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bearing screw transfer devices face challenges in maintaining constant contact between the bearing and screw shaft, adjusting preload accurately, and minimizing temporary deformation of the screw shaft during operation, leading to inefficient power transmission.
Innovation Solution
The device employs two driving bearings running along a screw groove with a two-surface screw groove design, where each bearing is coupled to an operating plate symmetrically and inclined, with elastic plates and preload adjustment bolts for independent preload control, and support bearings to prevent deflection and yawing, ensuring constant contact and smooth power conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a plurality of bearings are arranged on a cylinder wrapping along a screw shaft or a rod coupled to a cap in a cylindrical arrangement, then the bearings are mechanically coupled to one another and operated in association, but it becomes very difficult to appropriately adjust preloads of all bearings and only one or two bearings may contribute to transmission of power
Solution Approach 1:
The patent divides the cylindrical bearing arrangement into independent bearing units, each with its own preload adjustment mechanism. Instead of adjusting all bearings simultaneously through a single cylinder, each bearing can be adjusted independently, allowing optimal preload distribution across all bearings for effective power transmission.
Solution Approach 2:
The patent introduces adjustable and adaptable preload mechanisms that allow the bearing system to dynamically optimize contact pressure distribution. The preload can be adjusted based on operating conditions to ensure all bearings contribute effectively to power transmission rather than remaining idle.
2Reliability
If the preload between the screw shaft and the bearing is excessively high, then contact is maintained, but a great load is exerted to the driving motor and efficiency of conversion greatly deteriorates
Solution Approach 1:
The patent employs adjustable preload mechanisms that allow optimization of contact pressure parameters. By precisely controlling the preload within an optimal range rather than using excessive force, the system maintains reliable contact between the screw shaft and bearings while minimizing the load on the driving motor and maximizing conversion efficiency.
3Use of energy by moving object
If the preload between the screw shaft and the bearing is too low, then the driving motor load is reduced, but contact between the screw shaft and bearing is released and the screw shaft idles
Solution Approach 1:
The patent uses adjustable preload mechanisms to precisely control contact pressure parameters. By optimizing the preload to the minimum necessary level rather than using excessive force, the system maintains reliable contact between the screw shaft and bearings while minimizing the load on the driving motor and maximizing conversion efficiency.
4Device complexity
If two or more bearings are installed on the same continuous surface on one side of the screw groove, then the structure is compact, but it becomes extremely difficult to appropriately adjust preloads of the bearings
Solution Approach 1:
The patent divides the bearing arrangement into independent units, each with its own preload adjustment mechanism. This segmentation allows each bearing to be adjusted independently even when multiple bearings are installed on the same continuous surface, maintaining structural compactness while enabling precise preload control for optimal power transmission.
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 configuration maintains consistent contact and preload, allowing for easy adjustment and minimizing screw shaft deformation, resulting in stable and efficient power conversion by distributing load and using self-adjustment mechanisms to maintain optimal contact pressure.
Implementation Method 1
a first elastic plate which is bent according to a shape of the first upward bending wing
Implementation Method 2
a first driving bearing and a second driving bearing which run along a screw groove of a screw shaft, thereby converting a rotational force of the screw shaft into a translational force
Implementation Method 3
contact between an outer ring of the bearing and the screw groove of the screw shaft should be maintained under constant contact pressure (hereinafter, referred to as a 'preload' in the present disclosure) enough to generate friction necessary for transmitting a force
Data Source
AI summary
A bearing screw transfer device which converts a rotational motion of a screw shaft into a linear motion by the medium of a bearing is disclosed. The bearing screw transfer device has a first driving bearing and a second bearing which run along a screw groove of a rotating screw shaft, thereby converting a rotational force of the screw shaft into a translational force of an operating plate disposed on an upper portion of the screw shaft, wherein a two-surface screw groove is formed on the screw shaft, and an outer ring of the first driving bearing runs in contact with one surface of the two-surface screw groove, and an outer ring of the second driving bearing runs in contact with the other surface of the screw groove.