Two-Axis Direct Drive Gimbal Layout Without Gear Transmission
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Solution Overview
Problem
Existing two-axis drive mechanisms for pan-axis and tilt-axis rotation equipment, such as those used in unmanned aerial vehicles (UAVs), face limitations in space-saving layout, weight optimization, and industrial design, as well as transmission errors and mass reduction.
Innovation Solution
A two-axis direct drive mechanism utilizing direct drive motors and encoders with integrated electric commutators on both axes, combined with optimized layout and reduced mass through the use of aluminum alloy frames and Thin Section Bearings, eliminates intermediate transmission mechanisms like gears or belts, ensuring 360-degree operation and minimizing transmission errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If gear or belt drive systems are used, then assembly is easier, but transmission errors increase and device complexity increases
Solution Approach 1:
The patent removes intermediate transmission mechanisms (gears, belts,离合ers) from the drive system, directly coupling the motor output to the load. This extraction of transmission components eliminates the associated transmission errors while simplifying the overall structure, directly resolving the contradiction between assembly ease and transmission precision.
Solution Approach 2:
The patent replaces complex mechanical transmission systems with a direct drive configuration, where the motor's rotor is directly connected to the output shaft. This substitution eliminates mechanical transmission errors inherent in gear and belt systems while maintaining structural simplicity.
2Device complexity
If intermediate transmission mechanisms are used, then device complexity increases, but space usage is less optimized
Solution Approach 1:
By removing intermediate transmission mechanisms such as gears, belts, and离合ers, the patent significantly reduces the number of components and simplifies the mechanical structure. This extraction directly reduces both device complexity and the space required for layout, simultaneously addressing both aspects of the contradiction.
Solution Approach 2:
The patent merges the motor and load into a directly coupled configuration, eliminating the need for separate transmission components. This merging of functions reduces the overall device complexity and optimizes space usage by eliminating redundant mechanical elements.
3Ease of manufacture
If traditional drive systems with multiple components are used, then assembly is simpler, but weight increases
Solution Approach 1:
The patent extracts and removes heavy intermediate transmission components (gears, belts,离合ers, couplings) from the drive system. This extraction dramatically reduces the overall mass of the mechanism while maintaining assembly simplicity through the direct coupling configuration.
Solution Approach 2:
The patent discards unnecessary intermediate transmission components that add weight without providing functional benefit in this application. By eliminating these redundant heavy components and retaining only the essential direct drive configuration, the patent achieves weight reduction while maintaining manufacturing simplicity.
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 provides a compact, lightweight, and efficient two-axis drive mechanism that optimizes space usage, reduces transmission errors, and enhances the operational reliability of multi-sensor observation systems for UAVs and motor vehicles by eliminating the need for intermediate transmission systems.
Implementation Method 1
direct drive motor
Implementation Method 2
encoder
Implementation Method 3
Thin Section Bearing
Data Source
AI summary
The invention proposes the two-axis direct drive mechanical mechanism of a multi-sensor observation device for unmanned aerial vehicles. This is a mechanical mechanism to perform rotate pan-tilt axis by direct drive motor. This mechanism include main components: assembly pedestal, assembly pan-axis and assembly tilt-axis. Electronic circuits, encoders, mechanism, motor are optimized arranged and scientifically designed to the layout space and the weight of the structure. This mechanism can integrate optical sensors such as infrared cooling cameras, high resolution camera, laser rangefinder.