Robot Maintenance Fixture for Stable Overhead Component Replacement
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Solution Overview
Problem
Existing robot maintenance tools face challenges in efficiently replacing components like motors and reducers on ceiling-mounted robots, particularly in maintaining stability and workspace during disengagement and removal, often requiring external cranes which limit flexibility and efficiency.
Innovation Solution
A robot maintenance fixture with a fixture body, a first hanger portion vertically above the working part's center of gravity, and a second hanger portion vertically above the actuator's center of gravity, using chain blocks and suspension belts to suspend and reorient components, allowing for stable removal and replacement without external cranes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a ceiling crane is used to suspend and replace robot components, then the robot can be maintained, but the workspace is limited and operational efficiency is reduced
Solution Approach 1:
The maintenance fixture is divided into separate functional modules: a fixture body attached to the robot, a first hanger portion for suspending the working part, and a second hanger portion for suspending the actuator. This segmentation allows independent suspension and manipulation of different components, enabling maintenance work without a ceiling crane and improving workspace accessibility.
2Area of stationary object
If components are suspended without a ceiling crane, then workspace is improved, but stable suspension and prevention of abrupt movement becomes difficult
Solution Approach 1:
The first hanger portion is positioned vertically above the center of gravity of the working part, and the second hanger portion is positioned vertically above the center of gravity of the actuator. This alignment creates equipotential suspension points that prevent abrupt movements and ensure stable suspension of components during maintenance operations.
3Productivity
If maintenance is performed without a ceiling crane, then operational efficiency is improved, but the ability to lift and reorient heavy components is reduced
Solution Approach 1:
The fixture body incorporates a chain block that functions as a counterweight mechanism. This chain block provides the necessary lifting force to raise and lower the working part and actuator, enabling maintenance personnel to efficiently handle heavy components without requiring a ceiling crane, thus improving operational efficiency.
Data Source
AI summary
A robot maintenance fixture includes: a fixture body removably attached to a robot mounted in a state of being suspended from a stand; a first hanger portion that can be disposed vertically above a position of the center of gravity of a working part of the robot, the working part being a part driven by an actuator on which maintenance is to be performed, the working part being in a state of being attached to the actuator, and with which the working part can be suspended from the fixture body with a first hanger member; and a second hanger portion that can be disposed vertically above a position of the center of gravity of the actuator in a state of being attached to the robot and with which the actuator can be suspended from the fixture body with a second hanger member.