Electronically Actuated Clutch for Planetary Winch
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Solution Overview
Problem
Existing winches with electronically operated clutches for planetary gear drives consume excessive power, leading to battery depletion and heat-related issues, and are unsafe during power failures, as they require specific polarity to operate and cannot lock the ring gear in place.
Innovation Solution
An electronically operated clutch for a planetary winch that uses a solenoid with two current levels to engage and disengage, allowing remote operation, minimal power consumption, and automatic engagement in case of power failure, with a bias mechanism to lock the ring gear in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a standard solenoid is used to operate the clutch, then the clutch can be electronically actuated, but power consumption increases significantly
Solution Approach 1:
The solenoid is energized in periodic pulses rather than continuously. A control circuit monitors the clutch position and activates the solenoid only when needed to transition between engaged and disengaged states, then deactivates it to allow the spring to return the plunger to its original position. This periodic activation dramatically reduces power consumption compared to continuous energization.
Solution Approach 2:
The system dynamically adjusts solenoid activation based on real-time clutch position feedback. The control circuit continuously monitors whether the clutch is engaged or disengaged and only energizes the solenoid when a state change is required, optimizing power usage according to actual operational needs rather than maintaining constant power supply.
2Reliability
If the solenoid remains energized to maintain clutch position, then clutch position is maintained, but heat buildup occurs leading to solenoid failure
Solution Approach 1:
The solenoid is energized only in periodic pulses to transition the clutch between states, then deactivated to allow passive spring-based position maintenance. This eliminates continuous heat generation while the clutch remains in a given position, preventing thermal buildup that would lead to solenoid failure.
Solution Approach 2:
The patent replaces the continuous electromagnetic force with a mechanical spring system for maintaining clutch position. Once the solenoid transitions the plunger to the desired position, the spring maintains that position mechanically without requiring continued electrical power, thereby eliminating ongoing heat generation.
3Use of energy by moving object
If a polarity-dependent solenoid is used, then power consumption is reduced, but safety is compromised during power failures
Solution Approach 1:
Instead of using a polarity-dependent solenoid that requires specific current direction to maintain engagement, the patent inverts the approach by using a spring-biased system where the solenoid only needs to overcome the spring force temporarily. The spring naturally returns the plunger to the engaged position, ensuring safety during power failures without requiring continuous polarity-dependent power supply.
Solution Approach 2:
The spring mechanism acts as a pre-positioned safety mechanism that ensures clutch engagement in the event of power failure. The spring is pre-loaded to automatically return the plunger to the engaged position, providing beforehand protection against unsafe disengagement during electrical system failures.
4Use of energy by moving object
If manual clutch operation is used, then power consumption is minimal, but operator safety and convenience are reduced
Solution Approach 1:
The clutch system operates automatically based on electrical signals from the control circuit, which monitors clutch position and activates the solenoid as needed. This self-service operation eliminates the need for manual intervention, improving operator convenience and safety while maintaining minimal power consumption through the periodic action principle.
Solution Approach 2:
The patent replaces manual mechanical clutch operation with an electronically controlled solenoid system. The control circuit automatically manages clutch engagement and disengagement based on operational needs, eliminating the need for the operator to physically manipulate the clutch mechanism while maintaining energy efficiency through intelligent control.
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
Extends battery life, reduces heat damage, and ensures load security during power failures by allowing remote operation with minimal power consumption and automatic clutch engagement.
Implementation Method 1
The solenoid is moved to a disengaged position by being energized by a first current level
Implementation Method 2
Once deenergized, a bias means moves the solenoid plunger to an engaged position
Data Source
AI summary
An electronically operated clutch for planetary winch where the clutch is disengaged by a first current level and maintained in the disengaged position by a second current level. The second current level being less than the first current level.