Torque Limiting Conical Braking Assembly for Power Winch
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Solution Overview
Problem
Conventional power winches have separate torque limit and unpowered braking mechanisms, leading to increased costs, compatibility issues, and delayed disconnection of power transmission during overloads, which can damage components and prevent immediate stopping.
Innovation Solution
A torque limiting and conical braking assembly is integrated into the transmission mechanism, featuring a conical braking mechanism with a brake block, disc-shaped rim, wedge block, and bump, along with a torque limit mechanism comprising a torque shaft, friction pad, brake pad, and elastic elements, to provide simultaneous torque limiting and braking effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate torque limit mechanism and unpowered braking mechanism are installed, then torque limiting function is provided, but device complexity and cost increase
Solution Approach 1:
The patent combines the torque limit mechanism and unpowered braking mechanism into a single integrated assembly. The conical braking mechanism shares the brake block, disc-shaped rim, and wedge block with the torque limit mechanism, eliminating the need for separate devices and reducing overall system complexity while maintaining both functions.
Solution Approach 2:
The conical braking mechanism serves multiple functions: it acts as both the unpowered braking mechanism (stopping power transmission when unpowered) and the torque limit mechanism (protecting against overload). The elastic element and wedge block jointly provide both braking and torque limiting capabilities, making the system multi-functional.
2Reliability
If conventional current breaker and electromagnetic brake clutch are used separately, then torque limiting and braking effects are provided, but compatibility issues and unsmooth operation occur
Solution Approach 1:
The patent merges the electromagnetic brake clutch and current breaker functions into a unified conical braking mechanism. The brake block, disc-shaped rim, and wedge block work together as an integrated system, ensuring high compatibility and smooth operation between torque limiting and braking functions without the conflicts that arise from separate mechanisms.
3Reliability
If separate mechanisms are installed at different positions, then torque limiting and braking functions are achieved, but response time is delayed and immediate stopping cannot be achieved
Solution Approach 1:
The patent positions both the torque limit mechanism and unpowered braking mechanism at the same location within the transmission mechanism. The brake block, disc-shaped rim, and wedge block are co-located, enabling immediate response to overload conditions without the buffer time required by separate mechanisms at different positions.
Solution Approach 2:
The elastic element is pre-compressed between the brake block and wedge block, storing energy ready for immediate release. When overload occurs, the pre-positioned components can act instantly without requiring assembly or activation time, achieving immediate stopping and torque disconnection.
4Reliability
If two separate mechanisms are used, then torque limiting and braking functions are provided, but manufacturing and assembly costs double
Solution Approach 1:
The patent integrates the torque limit mechanism and unpowered braking mechanism into a single conical braking assembly, reducing the number of parts that need to be manufactured and assembled. The shared components (brake block, disc-shaped rim, wedge block, elastic element) eliminate redundant manufacturing processes and reduce overall production costs.
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
This integrated solution ensures timely disconnection of power transmission and immediate stopping during overloads, preventing damage to the power winch components while maintaining smooth operation and compatibility.
Implementation Method 1
a compatible component capable of producing a conical braking effect... an elastic element being covered onto the sectional shaft, and an end of the elastic element being inserted into the positioning hole of the sectional shaft
Implementation Method 2
the conical braking mechanism is comprised of a brake block, a disc-shaped rim, a wedge block and a bump; the brake block has an outwardly and obliquely expanded conical friction surface formed at the outer periphery of the brake block
Implementation Method 3
the wedge block has an engaging gear installed to an inner wall at the inner periphery of a center hole of the wedge block... and the wedge block has a bevel and a convex latching body
Data Source
AI summary
Disclosed is a torque limiting and conical braking assembly for a power winch. In the process of outputting power by a power supply and transmitting the power to a reduction mechanism, a torque limit mechanism formed by a torque shaft, a friction pad, a brake pad, a disc-shaped elastic element, an adjustable positioning ring and a positioning screw ring and a conical braking mechanism formed by a brake block, a disc-shaped rim, a wedge block and a bump are installed, so that when the reverse torque produced by the carrying load of the power winch exceeds the torque bearable by the power supply, the power transmission is cut off immediately and a conical braking effect is produced to protect the transmission mechanism from being damaged.