Selective Pulley Engagement in Switch Manipulators to Save Space
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Solution Overview
Problem
Existing gas-insulated switches require multiple manipulators with high-power motors to drive multiple pulleys, leading to increased space requirements for installation.
Innovation Solution
A switch design that includes a single manipulator with a motor, drive pulleys, and a controller to selectively engage individual pulleys, eliminating the need for high-power motors and reducing the space needed for installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single manipulator with high-power motor is used to drive multiple pulleys simultaneously, then the number of manipulators is reduced, but the motor power and space requirements increase
Solution Approach 1:
The system segments the drive function by providing multiple drive pulleys (first, second, third drive pulleys) that can be selectively engaged with the motor output shaft. Each drive pulley corresponds to a specific switching element, allowing the motor to drive only one pulley at a time rather than all simultaneously, thus reducing the required motor power while maintaining the ability to control multiple elements.
Solution Approach 2:
The system implements dynamic engagement and disengagement of drive pulleys with the motor output shaft through engagement/disengagement elements. This dynamic configuration allows the motor to selectively connect to different drive pulleys based on which switching element needs actuation, enabling a single lower-power motor to replace multiple high-power motors while maintaining operational flexibility.
2Power
If multiple manipulators are installed one for each disconnector and grounding switch, then each manipulator can be low-power, but the installation space increases
Solution Approach 1:
The system merges multiple manipulator functions into a single manipulator by providing multiple drive pulleys that share a common motor output shaft. These drive pulleys are arranged in a compact configuration where they can be selectively engaged with the motor shaft, combining the functions of what would traditionally require separate manipulators into one integrated unit, thus reducing installation space.
Solution Approach 2:
The motor in the single manipulator is designed to perform multiple functions by selectively engaging with different drive pulleys. The motor serves as a universal drive source that can actuate any of the switching elements (disconnectors or grounding switches) by engaging the corresponding drive pulley, replacing the need for dedicated individual manipulators for each switching element.
3Area of stationary object
If a single manipulator drives multiple pulleys simultaneously, then space is reduced, but the motor must be high-power to handle all loads
Solution Approach 1:
The engagement/disengagement elements act as intermediaries between the motor output shaft and the multiple drive pulleys. These elements selectively connect or disconnect the motor shaft from specific drive pulleys based on control signals, enabling a single motor to control multiple switching elements without requiring simultaneous high-power output to all pulleys, thus reducing motor power requirements while maintaining compact space.
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 design reduces the space required for manipulator installation by avoiding the need for high-power motors to simultaneously drive multiple pulleys, thereby optimizing space utilization.
Implementation Method 1
a motor; a plurality of drive pulleys installed on an output shaft of the motor
Implementation Method 2
A wire, configured to transmit torque of the motor, is stretched around each of the drive pulleys and corresponding one of the driven pulleys
Data Source
Figure 1
Figure 2
Figure 3~4
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 (33) installed on an output shaft of the motor; and a controller that controls 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 (4) for transmitting torque of the motor is stretched around each of the drive pulleys (33) and corresponding one of the driven pulleys. Each of the plurality of drive pulleys (33) includes: a mover (332) having a catch (334) that engages with the output shaft (32); and a chuck (331) having a mover (332) and a driver, the catch (334) being engaged with the output shaft (32) in the engaged state, and being out of contact with the output shaft (32) in the disengaged state. The controller exclusively brings one of the plurality of drive pulleys (33) into the engaged state.