Reduction Gear External Flange Bolt Assembly
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Solution Overview
Problem
The existing reduction gear designs face poor assembling workability due to the need for bolt fastening inside the orthogonal shaft reduction gear casing, making the connection process cumbersome.
Innovation Solution
The orthogonal shaft reduction gear casing is designed with a flange portion protruding outside, allowing for bolt connection to a joint plate from the orthogonal shaft reduction gear side and additional bolts from the parallel shaft reduction gear side, enabling external bolt fastening and improving workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the orthogonal shaft reduction gear casing and parallel shaft reduction gear casing are connected through internal bolt fastening, then the connection strength is improved, but the assembling workability deteriorates
Solution Approach 1:
The patent inverts the conventional internal bolt fastening approach by implementing external bolt fastening. The flange portion protrudes from the orthogonal shaft reduction gear casing, allowing bolts to be fastened from the outside rather than inside the casing. This inversion resolves the technical contradiction by maintaining connection strength through proper flange-bolt design while dramatically improving assembling workability by eliminating the need for internal assembly operations.
2Ease of operation
If the flange portion protrudes outside the orthogonal shaft reduction gear casing, then the assembling workability is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the connection structure into distinct functional elements: the main orthogonal shaft reduction gear casing, the protruding flange portion as a separate connection interface, and the joint plate. This segmentation allows the flange to be designed independently for optimal bolting operations while keeping the main casing structure relatively simple. The modular connection approach improves assembling workability without significantly complicating the overall device.
Data Source
AI summary
A reduction gear includes: an orthogonal shaft reduction gear having an orthogonal shaft reduction gear casing; and a parallel shaft reduction gear having a parallel shaft reduction gear casing, which is connected to the orthogonal shaft reduction gear, wherein the orthogonal shaft reduction gear casing and the parallel shaft reduction gear casing are connected through a joint plate, the orthogonal shaft reduction gear casing has a flange portion protruding to the outside of the orthogonal shaft reduction gear casing, and the orthogonal shaft reduction gear casing and the joint plate are connected by a first bolt inserted into the flange portion from the orthogonal shaft reduction gear side, and a second bolt inserted into the joint plate from the parallel shaft reduction gear side.