Selective Pulley Switch Manipulator for Compact Motor Drive
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gas-insulated switches require a high-power motor to simultaneously drive multiple pulleys, necessitating increased space for the manipulator installation.
Innovation Solution
A switch design that includes a motor with a plurality of drive pulleys, each with a mover and chuck mechanism, and a controller to exclusively bring one drive pulley into an engaged state, allowing for efficient torque transmission without the need for a high-power motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a single manipulator with multiple drive pulleys is used to drive multiple disconnectors and grounding switches, then the space required for manipulator installation is reduced, but a high-power motor is required to simultaneously drive all pulleys
Solution Approach 1:
The system dynamically switches between different drive pulleys based on operational needs. The controller selectively engages only the necessary drive pulley at any given time, transforming a static multi-drive system into a dynamic single-drive system. This reduces the power requirements while maintaining the space-saving benefit of a consolidated manipulator.
Solution Approach 2:
The manipulator operates in periodic cycles, activating one drive pulley at a time in sequence rather than all simultaneously. Each drive pulley is engaged periodically when needed for its corresponding disconnector or grounding switch operation, then disengaged. This periodic activation pattern allows a lower-power motor to perform the work of what would otherwise require a high-power continuous motor.
2Power
If multiple manipulators are installed one for each disconnector and grounding switch, then each manipulator can use a lower-power motor, but the space required for manipulator installation increases
Solution Approach 1:
Multiple individual manipulators are merged into a single consolidated manipulator that houses one motor and multiple drive pulleys. This merging consolidates the space requirements while the selective engagement mechanism ensures that the motor power requirement does not increase proportionally to the number of driven components.
Solution Approach 2:
A single manipulator is designed with multi-functionality to drive multiple disconnectors and grounding switches through its multiple drive pulleys. The manipulator serves universal purposes for different switching operations, and the controller manages this multi-functionality by selectively activating only the required drive pulley for each specific operation, preventing the need for a high-power motor.
3Productivity
If a high-power motor is used to simultaneously drive multiple pulleys, then all disconnectors and grounding switches can be operated at once, but the manipulator size and installation space increase
Solution Approach 1:
The system uses dynamic engagement of drive pulleys controlled by a controller that activates only the necessary pulley at each moment. This dynamic operation maintains high productivity by quickly switching between different drive pulleys in sequence, while the manipulator volume remains compact because a smaller motor is sufficient without the need for simultaneous high-power output to all pulleys.
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 design reduces the need for a large manipulator with a high-power motor, thereby minimizing the space required for installation and enhancing operational efficiency.
Implementation Method 1
A wire, configured to transmit torque of the motor, is stretched around each of the drive pulleys and corresponding one of the driven pulleys
Implementation Method 2
a mover including a catch configured to engage with the output shaft
Implementation Method 3
A pulley is installed in each of the disconnector or the opener-closer and the manipulator, and torque is transmitted from the manipulator to the disconnector or the opener-closer by a wire cable stretched around the pulleys
Data Source
AI summary
A switch includes: a circuit breaker; a disconnector; a grounding switch; and a manipulator that drives the disconnector and the grounding switch. The manipulator includes: a motor; a plurality of drive pulleys installed on an output shaft of the motor; and a controller for controlling rotation of the motor. Each of the disconnector and the grounding switch includes a switching manipulator that performs a switching action according to rotation of a driven pulley. A wire for transmitting torque of the motor is stretched around each of the drive pulleys and corresponding one of the driven pulleys. Each drive pulley includes: a mover having a catch that engages with the output shaft; and a chuck having a mover and a driver, the catch being engaged with the output shaft in the engaged state. The controller exclusively brings one of the plurality of drive pulleys into the engaged state.