Angular Gear Housing With Threaded Bearing and Backlash Adjustment
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Solution Overview
Problem
Existing transmission systems with bevel gear stages and housings face challenges in extending service life and efficiently adjusting bearing tension and backlash without the use of shims.
Innovation Solution
A transmission system with a bevel gear stage and housing where the bearing tension is adjusted by screwing threaded nuts asynchronously, and backlash is adjusted synchronously, eliminating the need for shims, and featuring a housing design with internally threaded sections for simplified assembly and sealing, allowing for high bearing voltage and optimized play settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If shims or spacers are used to adjust bearing tension, then bearing tension can be adjusted, but the device complexity increases and service life is reduced
Solution Approach 1:
The patent extracts and eliminates the need for shims or spacers by integrating the adjustment function directly into the housing through threaded sections. The threaded nuts provide direct bearing tension adjustment without requiring separate shim components, thereby reducing device complexity while maintaining ease of operation.
Solution Approach 2:
The housing is designed with integrated threaded sections that serve multiple functions: providing bearing support, enabling bearing tension adjustment, and eliminating the need for separate shim components. This multi-functionality reduces the overall number of parts and simplifies the structure while maintaining adjustment capability.
2Ease of operation
If shims are used to adjust backlash, then backlash can be adjusted, but manufacturing precision requirements increase
Solution Approach 1:
The patent replaces the mechanical shim-based adjustment system with a threaded fastening system. The threaded nuts provide controlled, incremental adjustment through rotation, enabling precise backlash control without requiring high manufacturing precision of individual components. The thread geometry itself provides the precision mechanism.
3Strength
If the housing is designed as a single piece, then structural strength is improved, but assembly complexity increases for non-monotonic shafts
Solution Approach 1:
The housing is segmented into multiple parts that can be assembled separately and then joined together. This segmentation allows for easier assembly of complex shaft configurations with non-monotonic diameters, as components can be pre-assembled and then integrated into the final housing structure, reducing overall assembly complexity while maintaining structural strength through proper joining methods.
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 enhances the service life and efficiency of the bevel gear stage by allowing for precise adjustment of bearing tension and backlash without shims, simplifying assembly, and minimizing play, thereby improving overall performance.
Implementation Method 1
a threaded nut screwed into the first internal threaded section presses, in particular in the axial direction, on the outer ring of the first bearing
Data Source
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AI summary
The invention relates to a transmission comprising an angular gear stage and a housing, wherein: a first toothing part of the angular gear stage is connected to a shaft for conjoint rotation; the shaft is rotatably mounted together with the first toothing part via a first bearing and via a second bearing; the first bearing is accommodated in the housing and the second bearing is accommodated in the housing; the housing has a first internally threaded portion and a second threaded portion axially spaced apart therefrom; a threaded nut screwed into the first internally threaded portion presses on the outer ring of the first bearing, in particular in the axial direction; the inner ring of the first bearing is placed against a stage of the shaft; a threaded nut screwed into the second internally threaded portion presses on the outer ring of the second bearing, in particular counter to the axial direction; and the inner ring of the second bearing is placed against the first toothed portion, in particular against a stage of the first toothed portion, or against a stage of the shaft.