Pendulum Gear Ratchet Tensioner for Unlimited Live-Wire Tension Control
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Solution Overview
Problem
Conventional gear tensioners for indirect live wire work have limited working distance due to restricted belt length, and require separate operation for reverse rotation prevention, making the process inconvenient and hazardous for workers.
Innovation Solution
An automatic direction switching pendulum-type rotary drive gear ratchet tensioner with an unlimited tension distance adjustment function, which allows for automatic forward or reverse rotation of a roller shaft using a rotary lever, enabling safe and convenient indirect live wire work without limitations on tension distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a conventional gear tensioner with a fixed-length belt is used, then the structure is simple, but the working distance is limited
Solution Approach 1:
The patent applies the dynamics principle by replacing the fixed-length belt with a dynamically adjustable rope length mechanism. The rope can be extended or retracted as needed through the reel mechanism, allowing the working distance to adapt to different operational requirements rather than being constrained by a predetermined belt length.
Solution Approach 2:
The patent implements universality by designing a tensioner that can handle multiple functions: it can adjust rope length, control tension force, and operate in both pulling and releasing directions. This multi-functional design eliminates the need for multiple separate devices with fixed capabilities, providing a universal solution for various working distance requirements.
2Reliability
If a separate reverse rotation prevention mechanism is added, then reverse rotation is prevented, but the operation becomes inconvenient and hazardous
Solution Approach 1:
The patent merges the reverse rotation prevention function with the existing reel mechanism by integrating a pawl and ratchet tooth system directly into the reel structure. This combination eliminates the need for separate control operations, as the prevention mechanism operates automatically with the normal winding and unwinding actions, thereby maintaining reliability while improving ease of operation.
Solution Approach 2:
The patent applies self-service by designing the reverse rotation prevention mechanism to operate automatically without requiring separate manual intervention. The pawl and ratchet teeth engage and disengage automatically based on the direction of rotation, providing reliable reverse rotation prevention while allowing convenient operation in the intended direction.
3Length of moving object
If the belt length is limited to about 1m, then the device structure is compact, but the tension distance is restricted
Solution Approach 1:
The patent applies the nested doll principle by storing the extended rope within the compact reel mechanism. When not in use, the rope is wound and stored inside the reel, maintaining a compact device volume. When needed, the rope can be extended to provide unlimited tension distance, effectively nesting a long flexible element within a small rigid structure.
Solution Approach 2:
The patent utilizes the flexible shell principle by employing a flexible rope instead of a rigid belt. The rope can be extended to any required length while being stored in a compact form on the reel, providing unlimited tension distance without significantly increasing the device volume. The flexibility of the rope allows it to conform to the reel structure when stored and extend freely when in use.
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 enables stable and reliable performance of indirect live wire work with unlimited tension control, preventing reverse rotation and backlash, thus ensuring worker safety and efficiency.
Implementation Method 1
a cam (220) provided at a tip portion of the rotary operating shaft (210) and disposed at a location eccentric from a central portion of the tip portion
Implementation Method 2
a gear roller (300) formed between the front and rear support plates (110, 110') and disposed on the other side of the body (100)
Data Source
AI summary
Provided is a gear ratchet tensioner for indirect live wire and an indirect live wire non-power distribution method and, more specifically, to an automatic direction switching pendulum-type rotary drive gear ratchet tensioner for indirect live wire and an indirect live wire non-power distribution method using the same, wherein the automatic forward or reverse rotation of a roller shaft can be carried out by simply operating a rotary lever using a stick for indirect live wire, and accordingly, indirect live wire work from the wire in the live wire condition enables safe wiring work such as wire electric dip adjustment work, electric wire installation work, and suspension insulator replacement work, etc. and the roller shaft is formed to be driven by a backstop ratchet ring operated by a multi-angle bundle pearl to strongly prevent a reverse direction and prevent backlash during a reverse rotation driving process to enable strong rotation driving.