Shape memory alloy driving actuator and driving method thereof

A memory alloy and driving method technology, which is applied in the directions of mechanisms, machines/engines, and mechanical equipment that generate mechanical power. and other problems, to achieve the effect of simple structure, large driving force and low cost

Active Publication Date: 2017-02-22
湖北三江航天红林探控有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a shape memory alloy-driven actuator and its driving method, which have large driving force and large displacement, and can be kept at any time even when the power is off In a certain state, it solves the technical pr

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  • Shape memory alloy driving actuator and driving method thereof
  • Shape memory alloy driving actuator and driving method thereof
  • Shape memory alloy driving actuator and driving method thereof

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0036] See figure 1 , an actuator driven by a shape memory alloy includes a drive unit 1 and a housing 2 .

[0037] See figure 2, A preferred embodiment of the drive unit 1 includes two shape memory alloy rings 1-1, a shape memory alloy spring 1-2, a pin shaft 1-3 and a sleeve 1-4. The two shape-memory alloy rings 1-1 are annular structures with internal threads inside the rings, an...

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Abstract

The invention discloses a shape memory alloy driving actuator and a driving method thereof, and belongs to the technical field of actuators. The shape memory alloy driving actuator comprises a driving unit and a shell. The driving unit comprises two shape memory alloy rings, a shape memory alloy spring and a pin shaft. The two ends of the shape memory alloy spring are connected with the first shape memory alloy ring and the second shape memory alloy ring correspondingly, and the first shape memory alloy ring is connected with the pin shaft. The shape memory alloy rings and the shape memory alloy spring are each made of a dual-stroke shape memory alloy material. A plurality of grooves are evenly formed in the side wall of an inner cavity of the shell in the axial direction. According to the shape memory alloy driving actuator, timing sequence motion of the driving unit cooperates with locating of the grooves in the shell to drive the pin shaft to achieve telescopic motion. The shape memory alloy driving actuator has the beneficial effects of being large in driving force, large and controllable in displacement, simple in structure, capable of achieving reciprocating motion, low in cost, free of noise and magnetism, convenient to mount and the like and can be widely applied to electromechanical systems.

Description

technical field [0001] The invention belongs to the technical field of actuators, and in particular relates to an actuator driven by a shape memory alloy and a driving method thereof. Background technique [0002] At present, in electromechanical systems and weapon systems, the extension actuation of the pusher and the retraction actuation of the pin puller are two common types of actuators. The driving methods of the above two types of actuators are mainly motors. drive, electromagnetic drive and gunpowder drive, etc. Motor-driven and electromagnetic-driven actuators have problems such as complex structure, high price, and low efficiency of electrical-mechanical energy conversion. The gunpowder-driven actuator mainly uses the gas generated by the gunpowder combustion to drive the piston to do work. Due to the influence of factors such as structure, gas pressure transmission direction and sealing, in practical engineering applications, the gunpowder-driven actuator has low ...

Claims

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Application Information

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IPC IPC(8): F03G7/06
CPCF03G7/065
Inventor 李响朱海军佟彦发
Owner 湖北三江航天红林探控有限公司
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