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Space-expanding mechanism driven by multi-piezoelectric vibrators in step-peristaltic mode

A mode-driven, space-expanded technology, applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve problems such as electromagnetic interference, complex structure, and self-locking complexity. Achieve the effects of small weight, no electromagnetic interference, and self-locking energy consumption when power is off

Active Publication Date: 2017-04-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of complex structure, serious electromagnetic interference and complex self-locking existing in the existing electromagnetic motor-driven space expansion mechanism, the present invention proposes a space expansion mechanism driven by a multi-piezoelectric vibrator step-peristaltic mode

Method used

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  • Space-expanding mechanism driven by multi-piezoelectric vibrators in step-peristaltic mode
  • Space-expanding mechanism driven by multi-piezoelectric vibrators in step-peristaltic mode
  • Space-expanding mechanism driven by multi-piezoelectric vibrators in step-peristaltic mode

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specific Embodiment approach 1

[0013] Specific implementation mode one, combination figure 1 with figure 2 To explain this specific embodiment, the spatial expansion mechanism based on the step and creep mode of multi-piezoelectric vibrator described in this specific embodiment includes a base 1, two shaft sleeves, two expansion mechanisms 3, and four piezoelectric vibrators 4 , Two drive shafts 5 and a mounting seat 2, the base 1 has through holes at the centers of two opposite side walls, and the through holes on the two side walls are coaxial, and two shaft sleeves Are fixed in the two through holes, the two unfolding mechanisms 3 are respectively fixed on two opposite side walls of the base 1, the ends of the four piezoelectric vibrators 4 are all fixed inside the base 1 through the mounting base 2. The head ends of the two piezoelectric vibrators 4 are located on the same straight line. One end of the two drive shafts 5 is closely connected with the two piezoelectric vibrators 4 by pre-tensioning force,...

specific Embodiment approach 2

[0016] Specific implementation mode two, combination figure 1 with figure 2 To describe this specific embodiment, the difference between this specific embodiment and the space expansion mechanism based on the multi-piezoelectric vibrator step creep mode drive described in the first embodiment is that the mounting base 2 and the base 1 are fixedly connected by bolts 6.

specific Embodiment approach 3

[0017] Specific implementation mode three, combination Figure 1-Figure 3 To illustrate this specific embodiment, the difference between this specific embodiment and the space expansion mechanism based on the multi-piezoelectric vibrator step creep mode drive described in the first embodiment is that each piezoelectric vibrator 4 includes a metal base 4-2, A plurality of piezoelectric ceramic sheets 4-3, an horn 4-4, and a driving foot 4-1, the plurality of piezoelectric ceramic sheets 4-3 are sequentially stacked on the metal base 4-2 and the horn 4-4 In between, the side surface of the metal base 4-2 is fixedly connected to the mounting base 2, the horn 4-4 is a block with a tapered section, and the large end of the horn 4-4 is connected to the piezoelectric ceramic sheet 4-3 , The small end of the horn 4-4 is provided with a driving foot 4-1, and the side surface of the driving foot 4-1 is connected with the outer surface of the driving shaft 5.

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Abstract

The invention discloses a space deployment mechanism driven based on a multi-piezoelectric vibrator step crawling mode, which relates to the field of space deployment mechanisms and aims at solving the problems of complicated structure, serious electromagnetic interference and complicated self locking existing in the current electromagnetic motor driving-type space deployment mechanism. The space deployment mechanism driven based on the multi-piezoelectric vibrator step crawling mode comprises a base, two shaft extension sleeves, two deployment mechanisms, four piezoelectric vibrators, two driving shafts and a mounting seat, wherein two opposite side walls of the base are provided with through holes, and the through holes in the two side walls are coaxial; the two shaft extension sleeves are fixed in the two through holes; the two deployment mechanisms are fixed on the two opposite side walls of the base respectively; the four piezoelectric vibrators are fixed inside the base via the mounting seat; and one ends of the two driving shafts are tightly connected with two piezoelectric vibrators via a pretightening force, and the other ends pass through the shaft extension sleeves to be connected with the two deployment mechanisms respectively. Thus, relaxation and contraction of the space deployment mechanism can be realized.

Description

Technical field [0001] The invention relates to the field of space expansion mechanisms, in particular to the field of space expansion mechanisms based on multi-piezoelectric vibrator step creep mode driving. Background technique [0002] The space deployment mechanism has a wide range of applications in the fields of flexible solar cells, antennas, ground remote sensing and deep space probe support structures, etc. The most basic function is to realize the simultaneous relaxation and contraction of several space deployment mechanisms; currently mature space deployment The mechanism uses a rotating electromagnetic motor as the driving element. Because the output motion of the electromagnetic motor is a rotating motion, the speed is high, and the output is small, it is generally necessary to cooperate with a reducer to achieve the purpose of deceleration and force increase, which makes the driving structure very complicated and high production cost; Since the electromagnetic motor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/04
Inventor 刘英想王鼎汶陈维山刘军考
Owner HARBIN INST OF TECH
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