Principle of Elastic Robotic ArmThe spring actuating mechanism is divided into four parts: spring energy storage, maintenance closure, and maintenance opening. It consists of many components, approximately 200. The isolator switch is composed of the expansion and contraction of the spring and the stored kinetic energy in the mechanical equipment. The operation of the energy storage reducer motor controls the storage, closure, and opening positions of the isolator switch through electromagnetic coils. The braking spring and closing spring are the core components of the spring actuating mechanism. They temporarily store the mechanical function of the motor in the closing spring, then release the closing spring for the closing operation; throughout the process of opening the brake, the stored energy in the opening spring serves as the driving force. Therefore, the kinetic energy for disconnecting equipment and the operation of the isolator switch comes from the stored kinetic energy of the spring, which is unrelated to the strength of the magnetic field, and does not require a large closing current.
The specific advantages of the extensibility control operating mechanism are::
(1) Standby mode features low current draw, eliminating the need for high-power operation.
② Remote control of energy storage, electrically operated closing and opening, or local manual energy storage, manual closing and opening. This way, manual switching is still possible when the actual operation of the switch power supply fades or when the operator is not using electricity.
(3) Intelligent and sensitive, the switch will not be damaged by fluctuations in power voltage and can quickly and automatically reclose.
④ The dual-purpose DC storage motor's output power is low.
⑤ The spring-actuated mechanism can match kinetic energy transfer, allowing various leakage circuit breakers that do not meet electrical current specifications to be universally compatible within the same operating unit. It can utilize different energy storage springs, offering high cost-performance.
Defects in the forgable control mechanism are as follows::
(1) Complex structure, intricate manufacturing process, high precision in processing, and high production costs.
(2) Excessive work pressure, high hardness requirements for prefabricated components.
③ The actual operating unit is prone to movement due to equipment failure. Specific factors include: the electric accumulator not charging promptly, the spring arm not passing the dead point, and the limit switch cutting off the energy storage motor, preventing the electric accumulator from being powered. The auxiliary power switch cannot immediately disconnect or close the control circuit, as the isolating switch cannot close after the actual operation of the closing button, often leading to the solenoid coil being energized for an extended period, potentially burning out the solenoid coil or the limit switch.
④ False jump, sometimes after a false jump, the braking is not timely for separation and combination, making it impossible to distinguish between separation and combination.
Feature of start-up rate is weak.
The expandable control mechanism has overcome many shortcomings of the magnetic induction control mechanism and is now widely used in distribution systems.
