Double-Speed Electric Winch Planetary Gearbox Design
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Solution Overview
Problem
Existing electric winches have limited application scenarios due to single-speed clutch control, complex installation, and require significant space for speed regulation, making them less suitable for multi-speed traction tasks.
Innovation Solution
A double-speed electric winch design featuring a gearbox with three planetary gear assemblies and a rotatable handle with a locking mechanism that allows switching between two planetary gear sets with different transmission ratios, enabling convenient speed adjustment and compact structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If speed regulation is achieved by using speed regulating gears of different gear ratios, then speed control function is improved, but installation complexity and space requirement increase
Solution Approach 1:
The patent combines multiple planetary gear assemblies with different transmission ratios into a single integrated gearbox structure. The first and second planetary gear assemblies are arranged concentrically sharing the same center, allowing both gear sets to be housed within one compact unit. This merging approach enables multi-speed control while reducing installation complexity and space requirements compared to separate gearboxes.
Solution Approach 2:
The single gearbox is designed to provide multiple transmission ratios through its two planetary gear assemblies. The first planetary gear assembly provides a first transmission ratio while the second planetary gear assembly provides a second transmission ratio different from the first. This multi-functional design allows the same gearbox structure to deliver speed regulation across multiple ratios without requiring separate transmission systems for each ratio.
2Device complexity
If a single-speed clutch control is used, then the structure is simple, but the application scenarios are limited and multi-speed traction tasks cannot be performed
Solution Approach 1:
The patent implements a dynamic clutch control mechanism that can switch between different clutch states corresponding to different planetary gear assemblies. The clutch is configured to selectively engage or disengage the first or second planetary gear assembly based on operational requirements. This dynamic switching capability allows the winch to adapt between single-speed and multi-speed modes, expanding application scenarios while maintaining relatively simple structural principles.
3Area of stationary object
If two planetary gear assemblies with different transmission ratios are integrated into one gearbox, then space requirement is reduced, but the locking mechanism complexity increases
Solution Approach 1:
The patent introduces a carrier as an intermediary component that holds both planetary gear assemblies. The carrier is rotatably connected to the gearbox housing and can selectively engage with either the first or second planetary gear assembly. This intermediary structure provides a unified mounting platform for multiple gear sets, reducing overall space requirements while managing the complexity of switching between different transmission ratios through a centralized engagement mechanism.
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 convenient speed adjustment and a more compact structure, enhancing the winch's versatility and usability for multi-speed traction tasks while simplifying installation and operation.
Implementation Method 1
an electric winch is usually composed of a motor, a transmission shaft, a planetary gear reduction box
Implementation Method 2
The first planetary gear assembly, the second planetary gear assembly and the third planetary gear assembly are sequentially connected to form a deceleration transmission
Implementation Method 3
The two outer ring gears comprise a locking component which forms an annular groove
Data Source
AI summary
The present disclosure discloses a double-speed electric winch and an operating method of the winch. The winch comprises two groups of planetary gears with different transmission ratios in a gearbox. The two groups of planetary gears have corresponding outer ring gears. The gearbox has a rotatable handle which has a locking head inserted in the gearbox. As the handle rotates, the locking head engages with the outer ring gears in different manners to provide a first rotating speed mode, a second rotating speed mode, and a disengaged mode.