Rotating Tension Pulley Mechanism for Precise Belt Tension Control
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Solution Overview
Problem
Existing belt tension adjustment devices for working machines, such as backhoes, lack an efficient mechanism to dynamically adjust belt tension, leading to potential mechanical failures and reduced performance due to inconsistent power transmission.
Innovation Solution
A belt tension adjustment device comprising a driving pulley, a driven pulley, a tension pulley, and a loop belt, along with a tension adjustment mechanism that includes a support shaft and a rotating member to adjust the relative position of the tension pulley, allowing for precise control of belt tension through rotational operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional belt tension adjustment device is used, then the structure is simple, but the belt tension cannot be dynamically adjusted leading to inconsistent power transmission
Solution Approach 1:
The patent applies the dynamics principle by enabling the tension pulley to move dynamically along the support shaft through rotational operation of the rotating member. This allows the belt tension to be adjusted in real-time based on operational requirements, transforming a static tension adjustment system into a dynamic one that maintains consistent power transmission throughout the belt's service life
Solution Approach 2:
The rotating member serves multiple functions: it simultaneously acts as the operation mechanism for adjusting tension pulley position and as the means for locking the tension adjustment. This multi-functionality reduces the overall device complexity while achieving reliable and consistent power transmission through dynamic tension control
2Reliability
If the tension pulley position is fixed, then the device complexity is low, but the belt tension cannot be adjusted leading to mechanical failures
Solution Approach 1:
The tension pulley is designed to be movable along the support shaft rather than fixed, allowing dynamic adjustment of belt tension. The rotating member enables this dynamic positioning while maintaining structural simplicity, ensuring reliable belt tension control without excessive complexity
Solution Approach 2:
The support shaft acts as an intermediary element that guides the movement of the tension pulley and transmits the rotational motion from the rotating member to the tension adjustment mechanism. This intermediary structure enables smooth tension adjustment while keeping the overall mechanism simple and reliable
3Manufacturing precision
If manual belt tension adjustment is used, then the device complexity is low, but the adjustment precision is insufficient reducing performance
Solution Approach 1:
The rotating member provides dynamic control over the tension pulley position, allowing precise adjustment of belt tension through rotational operation. This dynamic control mechanism achieves high adjustment precision while maintaining reasonable device complexity through its integrated design
Solution Approach 2:
The system changes the positional parameter of the tension pulley along the support shaft through rotation of the rotating member. This parameter change enables precise control of belt tension, transforming the adjustment from coarse manual positioning to fine-tuned rotational control
Data Source
AI summary
A belt tension adjustment device includes a driving pulley attached to a power transmission shaft, a driven pulley arranged in a driven device, a tension pulley, a loop belt arranged between the driving pulley, the driven pulley, and the tension pulley, and configured to transmit a rotational driving force of the power transmission shaft to the driven device, and a tension adjustment mechanism to adjust tension of the loop belt. The tension adjustment mechanism includes a support shaft rotatably supported, a rotational operation mechanism to rotate the support shaft about an axis of the support shaft, and a rotating member coupling the support shaft and the tension pulley, configured to change a relative position of the tension pulley with respect to the driving pulley and the driven pulley in accordance with rotating of the support shaft.