Chain Stepless Transmission With Friction Plate Chain Wheel
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Solution Overview
Problem
Existing continuously variable transmissions (CVTs) rely on friction for power transmission, limiting their widespread use due to inefficiencies and mechanical limitations.
Innovation Solution
A stepless transmission system utilizing a pair of active and passive cone discs, a chain, and a movable friction plate chain wheel, where power is transmitted through engagement and disengagement mechanisms involving a pressurizing shaft, fixed and movable friction plates, and pulleys to achieve high power transmission with minimal loss and mechanical steplessness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If power is transmitted by using friction between cone discs and chain (as in traditional CVT), then the structure is simple, but the power transmission capability is limited and power loss increases
Solution Approach 1:
The patent introduces a friction plate as an intermediary component between the chain and cone discs. The friction plate is pressed against the chain by a pressurizing shaft, enabling power transmission through controlled friction engagement rather than direct friction between cone discs and chain. This intermediary mechanism allows for higher power transmission capability while reducing power loss through optimized friction contact.
2Productivity
If friction-based power transmission is used, then the transmission is continuous, but the mechanical steplessness and efficiency are compromised
Solution Approach 1:
The patent employs a movable friction plate that can dynamically engage and disengage from the chain through the pressurizing shaft mechanism. This dynamic engagement allows the transmission to maintain continuous operation while achieving mechanical steplessness through variable friction contact, thereby improving both transmission efficiency and reliability simultaneously.
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 system enables high power transmission with low power loss and mechanical steplessness, allowing for efficient speed regulation and torque transmission.
Implementation Method 1
the pressurizing shaft presses tightly against the movable friction plate chain wheel and the fixed friction plate, the movable friction plate chain wheel, the fixed friction plate, the fixed friction plate positioning shaft, and a pulley are fixed together
Data Source
AI summary
The disclosure provides a chain type stepless transmission, including: a box, a pair of active cone discs including a fixed cone disc and a moving cone disc, a pair of passive cone discs including a fixed cone disc and a moving cone disc, an input shaft, an output shaft and a chain, there are a group of pulleys in the middle of each pair of passive cone discs and in the middle of each pair of active cone discs respectively, and the number of the group of pulleys may be an arbitrary value, such as 2, 3, 4, 5, 6, 7, 8, etc. In the stepless transmission, the fixed cone disc and the moving cone disc then transmit power from the input shaft to the output shaft through the chain, thereby realizing a high power of power transmission and a high torque.