Gearbox Oil Leak Detection Between Robot Gearbox and Motor
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Solution Overview
Problem
Existing robots face issues with oil leakage from gearboxes into motors due to aging seals, leading to potential motor failure and safety risks, with conventional detection methods only applicable to external seals and not internal leaks.
Innovation Solution
An apparatus with a base made of oil-absorbing material, a signal generator, and a controller to detect volume changes, generating electrical signals when oil contacts the base, allowing early detection of leakage and preventing motor contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional detection methods are used, then external seal leakage can be detected, but internal seal leakage cannot be detected
Solution Approach 1:
The patent introduces an intermediary detection device (magnetic sensor) that detects oil leakage indirectly through changes in magnetic field caused by oil accumulation, enabling detection of internal seal leakage without direct access to the seal location
Solution Approach 2:
The patent replaces conventional mechanical visual inspection methods with electromagnetic sensing technology, allowing detection of oil leakage through magnetic field changes rather than direct mechanical observation
2Ease of manufacture
If seals are replaced only after motor failure, then maintenance costs are minimized, but robot safety is compromised
Solution Approach 1:
The patent implements preliminary detection of oil leakage before it reaches the motor, allowing proactive maintenance scheduling that prevents motor failure while optimizing maintenance timing to avoid unnecessary replacements
3Device complexity
If no detection apparatus is installed, then device complexity is reduced, but oil leakage cannot be detected
Solution Approach 1:
The patent utilizes the magnetic properties of oil (which affects magnetic field penetration) to detect leakage, leveraging material properties rather than complex structural additions
Solution Approach 2:
The magnetic sensor serves multiple functions: detecting oil leakage, monitoring oil accumulation levels, and providing early warning, all through a single sensing element that adds minimal complexity
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
Enables timely detection and prevention of oil leakage, reducing maintenance costs and ensuring safer robot operation by allowing proactive seal replacement before motor contamination occurs.
Implementation Method 1
a base arranged between the gearbox and a motor coupled to the gearbox, the base made of a functional oil-absorbing material such that a volume of the base changes when the base contacts oil
Implementation Method 2
a signal generator coupled to the base and configured to cause an electrical signal or a change in a physical property of the signal generator in response to a change in the volume of the base
Data Source
AI summary
An apparatus for determining oil leakage of a gearbox and an associated robot. The apparatus includes a base arranged between the gearbox and a motor coupled to the gearbox. The base can be made of a oil-absorbing material such that a volume of the base changes when the base contacts oil. The apparatus also includes a signal generator coupled to the base and configured to cause an electrical signal or a change in a physical property of the signal generator in response to a change in the volume of the base. The apparatus also includes a controller coupled to the signal generator and configured to detect the electrical signal or the change in the physical property and to determine the oil leakage in response to a detection of the electrical signal or the change in the physical property.