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Alternate self-locked climbing piezoelectric actuator

A piezoelectric actuator, climbing rod technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of only one-way movement, insufficient thrust, etc. question

Inactive Publication Date: 2019-02-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to design an alternating self-locking rod-climbing piezoelectric actuator for the problem that the thrust of the existing ultrasonic piezoelectric actuator is insufficient or can only move in one direction

Method used

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  • Alternate self-locked climbing piezoelectric actuator
  • Alternate self-locked climbing piezoelectric actuator
  • Alternate self-locked climbing piezoelectric actuator

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Embodiment Construction

[0020] The following structural drawings and specific embodiments will further illustrate the present invention.

[0021] Such as Figure 1-4 shown.

[0022] An alternate self-locking rod climbing piezoelectric actuator, including a base 1, a sliding rod 2, an upper mover 5, a lower mover 4, piezoelectric ceramics 7, a pressure plate 3 and a pre-fixing system, the upper mover 5 and the lower mover The mover 4 has the same structure, such as Figure 4 shown. The piezoelectric ceramic 7 drives the upper mover 5 and the lower mover 4 to move alternately, the upper mover 5 and the lower mover 4 move along the slide bar 2, the pressure plate 3 and the pre-fixation system provide pre-fixation for the lower mover 4, Such as figure 1 As shown, the base 1 is fixedly connected to the slide bar 2, and the upper mover 5 and the lower mover 4 are set on the slide bar 2, as shown in figure 2 As shown, the two arc surfaces of the inner holes of the upper mover 5 and the lower mover 4 a...

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Abstract

An alternate self-locked climbing piezoelectric actuator is characterized in that it comprises a slide bar, an upper mover, a lower mover, a piezoelectric ceramic, and a pressure plate; the piezoelectric ceramic drives the upper mover and the lower mover to alternately motion; the upper mover and the lower mover move along the slide bar; the pressure plate and a pre-fixation system provide pre-fixation for the lower mover; a base (1) is fixedly connected with the slide bar (2); the upper mover (5) and the lower mover (4) sleeve the slide bar (2); the two arc surfaces of the inner holes of theupper mover (5) and the lower mover (4) are in contact with the slide bar (2) and can move relative to each other; the upper mover (5) is pivotally mounted on an upper rotating shaft (17); the lower mover (4) is pivotally mounted on a lower rotating shaft (18); the upper rotating shaft (17) and the lower rotating shaft (18) are fixed to the upper and lower ends of the piezoelectric ceramic (7); and the piezoelectric ceramic (7) is connected to a piezoelectric ceramic pre-tightening nut (8) by a piezoelectric ceramic pre-tightening bolt (9). The alternate self-locked climbing piezoelectric actuator has the advantages of large thrust, low processing precision requirement, two-way motion, and good application prospect.

Description

technical field [0001] The invention belongs to the field of ultrasonic motors, in particular to a piezoelectric actuator, in particular to an alternating self-locking pole-climbing piezoelectric actuator. 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 piezoelectric actuators 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 ...

Claims

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Application Information

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IPC IPC(8): H02N2/00
Inventor 杨建林孙志峻彭瀚旻王均山金家楣
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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