Cylindrical Geared Motor Casing for Protection and Easy Maintenance
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Solution Overview
Problem
Existing geared motors are not effectively isolated from external damage, require destructive casing disassembly for maintenance, and lack efficient mechanisms for switching between motor actuation and manual operation.
Innovation Solution
A cylindrical casing with flanges and shoulders, a hollow shaft, and shrouds that isolate the motor and allow easy maintenance, combined with a quick disconnect mechanism for manual operation, ensuring the motor is protected and can be easily integrated into systems without inducing eccentricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional solid casing is used for the geared motor, then the motor is protected from external damage, but the motor requires destructive disassembly for maintenance and cannot be easily isolated
Solution Approach 1:
The casing is divided into a modular cylindrical structure with separable flanges that can be independently removed. The front flange connects to the planetary gearset case while the rear flange connects to the hollow shaft, allowing the casing to be disassembled into sections for maintenance access without destructive force.
Solution Approach 2:
The flange connections use dynamic locking mechanisms with shoulders and grooves that allow for reversible assembly and disassembly. The grooves in the flanges engage with the cylindrical casing to provide secure attachment during operation but allow controlled separation when maintenance is required.
2Volume of moving object
If the motor is integrated into a compact tubular structure, then the overall size is reduced, but the mechanism for switching between motor actuation and manual operation becomes more complex
Solution Approach 1:
The tubular structure is segmented into functional zones: the hollow shaft for motor connection, the planetary gearset section, and the drum section. This segmentation allows independent access to each component and simplifies the switching mechanism by separating the motor actuation path from the manual operation path.
Solution Approach 2:
Instead of using a complex clutch or brake mechanism to switch between motor and manual operation, the design allows direct connection of the drum to either the motor output or manual input by reversing the engagement path. The grooves and shoulders enable the drum to be freely rotatable during motor operation but lockable during manual operation.
3Strength
If flanges are used to connect the cylindrical casing components, then the structure provides secure attachment, but the assembly and disassembly process becomes more time-consuming
Solution Approach 1:
The flanges are pre-formed with grooves and shoulders during manufacturing that align with corresponding features on the cylindrical casing. This preliminary preparation of alignment features eliminates the need for complex alignment procedures during assembly and allows for rapid connection by simply engaging the grooves and shoulders.
Solution Approach 2:
The grooves and shoulders are designed to self-align and self-lock during assembly. When the flanges are brought together, the grooves automatically engage with the cylindrical casing features and the shoulders provide automatic positioning, eliminating the need for manual alignment adjustments or additional fastening operations.
Data Source
AI summary
Geared motor comprising a planetary gearset (2) coupled to an output shaft of a motor (3), comprising a cylindrical casing (4a, 4b, 4c) isolating the geared motor (1) from the outside, and a hollow shaft (5) connected to the stator of the motor (3) and aligned with the output shaft of the planetary gearset (2).