Spur Gear Rotary Drive Coupling for Easier Gearbox Maintenance
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Solution Overview
Problem
Existing rotary mechanical systems face difficulties in maintenance due to the complex disassembly required when separating the motor and axial fan, which involves disassembling the gearbox and removing the rotary drive shaft, making maintenance labor-intensive.
Innovation Solution
A rotary mechanical system with a spur gear configuration that allows for the relative axial movement of the transmission unit and gearbox to easily disengage and reengage, enabling straightforward maintenance by moving the components apart and together along the central axis, facilitating the separation of the first and second gears.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional gear connection is used between transmission unit and gearbox, then reliable power transmission is achieved, but maintenance complexity increases due to required disassembly of gearbox and removal of rotary drive shaft
Solution Approach 1:
The system is divided into separable modules: transmission unit, gearbox, and coupling mechanism. The coupling mechanism itself is segmented into first gear (in transmission unit) and second gear (in gearbox), allowing independent maintenance of each module while maintaining reliable power transmission when connected.
Solution Approach 2:
The coupling mechanism provides dynamic adjustability, allowing the transmission unit and gearbox to be relatively moved in the axial direction. This dynamic positioning enables easy engagement and disengagement of the gear teeth for maintenance, while ensuring stable power transmission during operation.
2Stability of the object's composition
If motor and axial fan are permanently connected via gearbox, then system stability is improved, but maintenance time increases due to complex disassembly requirements
Solution Approach 1:
The coupling mechanism is pre-designed with axial movement capability, preparing the system for easy disassembly before maintenance is needed. The gears are pre-positioned such that relative axial movement automatically engages or disengages the connection, eliminating complex disassembly steps during maintenance.
Solution Approach 2:
The connection and disconnection operation is moved from radial or complex multi-directional movements to simple axial (linear) movement. By changing the dimension of the separation motion to purely axial direction, the maintenance operation becomes straightforward while system stability during operation is maintained.
Data Source
AI summary
A rotary mechanical system includes a driving machine, a transmission unit that includes a main shaft, a main gear, an auxiliary gear meshing with the main gear, an auxiliary shaft, and a first gear, a gearbox that includes a second gear meshing with the first gear, an input shaft with the second gear fixed, and an output shaft that shifts a rotation speed of the input shaft, and a rotary machine that includes a rotary machine shaft connected to the output shaft. The first gear is a spur gear having a plurality of first tooth portions which are spur teeth whose teeth traces are parallel to the central axis. The second gear has a plurality of second tooth portions which are spur teeth whose teeth traces are parallel to the central axis, and each of which is disposed between the adjacent first tooth portions.