Climbing rod actuator in isosceles trapezoid arrangement using alternating self-locking

Abstract

The present invention discloses a climbing rod actuator in an isosceles trapezoidal arrangement using alternating self-locking, and is characterized in that: a base is fixedly connected with a slidingrod, an upper rotor and a lower rotor are sleeved on the sliding rod, two arc surfaces of the upper rotor and the lower rotor inner holes are respectively in contact with the sliding rod, hinges of the upper rotor and the lower rotor coordinate with rotating shafts of an upper rotating shaft and a lower rotating shaft, and the upper rotor and the lower rotor are connected through the two sets ofrotating shafts, left oblique driving legs, right oblique driving legs, piezoelectric ceramic pre-tightening bolts and piezoelectric ceramic pre-tightening nuts, a upper pressing plate and a lower pressing plate are fixed through the upper rotor and the lower rotor through screws, pressure rollers and the pressure plates are connected through pin shafts, and outer edge of the pressure roller is elastic rubber, and the pressure rollers are suitable in size therefore can have a certain contact pressure with the sliding rod. The climbing rod actuator only needs to arrange the driving legs withinthe self-locking zone of the rotors, to realise alternating self-locking, therefore has low processing requirements. The climbing rod actuator is expected to achieve large pushing force, theoretically, as long as strength is sufficient, the piezoelectric actuator can have same amount of force with amount of force of the driving legs. Although self-locking is utilized, the actuator can achieve two-way motion.

Description

technical field [0001] The invention belongs to the field of ultrasonic motors, and in particular relates to an isosceles trapezoidal climbing rod actuator utilizing alternate self-locking. Background technique [0002] In recent decades, due to the development of piezoelectric ceramic preparation technology, the ultrasonic piezoelectric actuator proposed nearly a hundred years ago has been developed rapidly. Ultrasonic motors break through the concept of traditional motors, without magnets and windings, and do not rely on electromagnetic induction to transmit energy. It uses the inverse piezoelectric effect of piezoelectric ceramics, through the conversion and coupling of the stretching vibration mode of piezoelectric ceramics and the design of a special structure, the microscopic deformation of the material is converted into the macroscopic motion of the rotor through resonance amplification and friction coupling. Ultrasonic piezoelectric actuator has the characteristics ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to design a climbing rod actuator that uses alternate self-locking and isosceles trapezoidal arrangement to meet the needs of large thrust, two-way motion and trip requirements

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