Torque-Limiting Transmission Coupling With Spacer Ring Slip
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Solution Overview
Problem
Existing driving devices stall and are damaged when handling excessively large loads, necessitating a solution to prevent stalling and protect the device from overload.
Innovation Solution
A transmission device comprising an external cylindrical transmission device with inwardly extending arc-shaped protrusions, an internal transmission device with outwardly extending arc-shaped protrusions, and a spacer ring that allows relative slipping and rotation when the driving torque exceeds a predetermined level, preventing the external transmission device from driving the internal device during overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the driving device directly drives the load, then the transmission structure is simple, but the driving device stalls and is damaged when the load is excessively large
Solution Approach 1:
The transmission device is divided into an external transmission device and an internal transmission device, with the external device having inwardly extending arc-shaped protrusions and the internal device having outwardly extending arc-shaped protrusions. This segmentation allows the system to handle overload conditions while maintaining structural simplicity.
Solution Approach 2:
A spacer ring is introduced as an intermediary component between the external and internal transmission devices. The spacer ring enables relative slipping and rotation when driving torque exceeds a predetermined level, preventing direct overload transmission to the driving device while maintaining normal power transmission under normal conditions.
2Power
If the external transmission device and internal transmission device are rigidly connected, then power transmission is efficient, but the driving device cannot protect itself during overload
Solution Approach 1:
The connection between the external transmission device and internal transmission device is made dynamic through the spacer ring. Under normal operating conditions, the components are rigidly connected for efficient power transmission. When driving torque exceeds the predetermined level, the spacer ring allows relative slipping and rotation, enabling the external transmission device to slip and rotate relative to the internal transmission device, thus protecting the driving device from overload while maintaining normal power transmission efficiency.
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
The solution effectively protects the driving device from stalling during overloads by enabling slipping and rotation, reducing wear and improving operational stability and service life by preventing direct overload on the driving device.
Implementation Method 1
when the rotation driving torque between the external transmission device and the internal transmission device is greater than a predetermined torque, the deformation of the arc-shaped protrusions of the external transmission device or the arc-shaped protrusions of the internal transmission device enables the external transmission device to slip and rotate relative to the internal transmission device
Data Source
AI summary
A transmission device includes an external transmission device, an internal transmission device, and a spacer ring. The external transmission device is cylindrical and has an outer wall and an inner wall. The inner wall has a plurality of inwardly extending arc-shaped protrusions. The internal transmission device is disposed in the inner wall and has an outer circumferential surface including a plurality of outwardly extending arc-shaped protrusions. The spacer ring is located between and contacts the arc-shaped protrusions of the external transmission device and the arc-shaped protrusions of the internal transmission device. When torque between the external transmission device and the internal transmission device is greater than a predetermined torque, one or more of the arc-shaped protrusions of the external transmission device or the arc-shaped protrusions of the internal transmission device deform and the external transmission device rotationally slips relative to the internal transmission device.