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Round sleeve type memory alloy actuator

A memory alloy, circular sleeve technology, applied in the direction of machines/engines, mechanisms that generate mechanical power, mechanical equipment, etc., can solve the problems of large volume occupied by the structure, limited working space, and uncompact structure, and achieve a simple structure. Compact, saving cooling or heating devices, light weight effect

Inactive Publication Date: 2011-05-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a circular sleeve-type shape memory alloy actuator to solve the problem that the cooling or heating device of the current shape memory alloy actuator is separated from the actuator, resulting in an excessively large structure and an uncompact structure. Issues that result in restricted workspaces

Method used

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine Figure 1-Figure 4 Describe this embodiment, the actuator device in this embodiment includes the first end of the outer cylinder 1, two buffer springs 2, the first end of the inner cylinder 3, four semiconductor cooling chips 4, the second end of the inner cylinder Head 5, the second end of the outer cylinder 6, two first memory alloy wires 7, two second memory alloy wires 8, a cooling plate fixing frame 9, a circular inner cylinder 10 and a circular outer cylinder 11, and a circular outer cylinder The two ends of cylinder 11 are respectively equipped with outer cylinder first end 1 and outer cylinder second end 6, and circular inner cylinder first end 3, inner cylinder second end 5 and circular inner cylinder 10 are located in the circle In the shape outer cylinder 11, the two ends of the circular inner cylinder 10 are respectively equipped with the first end 3 of the inner cylinder and the second end 5 of the inner cylinder, a...

specific Embodiment approach 2

[0008] Specific implementation mode two: combination Figure 4 To illustrate this embodiment, each peltier 4 of this embodiment is bonded in the square groove 9-1, and this structure is stable. Other components and connections are the same as those in the first embodiment.

[0009] Working principle: firstly, the memory alloy wire is pretreated, such as Figure 5 The memory alloy wire is in a shrinking state at the austenite temperature, and when it is cooled to the martensite temperature, the memory alloy wire is elongated by applying tension. The memory alloy wire of the present invention is in when not working Figure 5 In the intermediate state at medium ambient temperature, the square inner cylinder 10 is located in the middle of the square outer cylinder 11 . When the action controller sends out a control signal to energize the four semiconductor refrigeration chips 4, the switching between the heating surface and the cooling surface of the semiconductor refrigeration...

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Abstract

The invention discloses a round sleeve type memory alloy actuator and relates to an actuator. The round sleeve type memory alloy actuator solves the problems of limited working space caused by oversize and loose structure resulting from the separation of a cooling or heating device from the actuator of the conventionally shaped memory alloy actuator. The two ends of the round outer barrel are provided with an outer barrel first end socket and an outer barrel second end socket respectively; the two ends of the round inner barrel are provided with an inner barrel first end socket and an inner barrel second end socket respectively; the two ends of a fixed mount of a refrigerating plate are arranged on the inner barrel first end socket and the inner barrel second end socket respectively; each semiconductor refrigerating plate is arranged in a square groove; one end of a first memory alloy wire is fixedly connected with the outer barrel first end socket, and the other end of the first memory alloy wire passes through the inner barrel first end socket to be fixedly connected with the inner barrel second end socket; one end of the second memory alloy wire is fixedly connected with the outer barrel second end socket, while the other end of the second memory alloy wire passes through the inner barrel second end socket to be fixedly connected with the inner barrel first end socket; and two second memory alloy wires are symmetrically arranged along the central axis of the fixed mount of the refrigerating plate. The round sleeve type memory alloy actuator is used for outputting linear displacement and force.

Description

technical field [0001] The invention relates to an actuator. Background technique [0002] Shape memory alloys have a shape memory effect. When the material is below the end temperature of martensite and undergoes a certain deformation under the action of external force, the heating temperature exceeds the phase transition temperature of the material, and the transformation from martensite to austenite will occur. When the material shrinks, it tries to return to the shape before deformation. If there are constraints at both ends of the material, a large restoring force will be generated inside the material. Shape memory alloys with two-way shape memory effect shrink repeatedly through heating and cooling. This feature can be used to make shape memory alloy actuators. At present, most of the shape memory alloy actuators use additional external cooling devices or heating devices. The structure is not compact, and it is not suitable for the environment with limited working sp...

Claims

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Application Information

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IPC IPC(8): F03G7/06
Inventor 刘荣强赵浩江郭宏伟邓宗全
Owner HARBIN INST OF TECH
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