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Temperature-controlled torque output driving device, assembly method thereof, and preparation method of shape-memory alloy coil spring thereof

A technology of memory alloy and torque output, which is applied in the direction of mechanical power generating mechanism, mechanical equipment, machine/engine, etc. It can solve the problems of adding mechanical conversion devices, excessive structural size, increasing the self-weight and structural complexity of the drive, etc. To achieve the effect of compact shape and large angular stroke

Inactive Publication Date: 2016-04-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of torque output driver is not only too large in structural size, but also increases the self-weight and structural complexity of the driver due to the addition of mechanical conversion devices.

Method used

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  • Temperature-controlled torque output driving device, assembly method thereof, and preparation method of shape-memory alloy coil spring thereof
  • Temperature-controlled torque output driving device, assembly method thereof, and preparation method of shape-memory alloy coil spring thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A temperature-controlled torque output driving device of this embodiment, such as figure 1 As shown, it includes a base, a bracket 2, a rotating shaft 1, a shape memory alloy coil spring 8 and a return coil spring 4, the base includes a front base 15 and a rear base 11, and the front base 15 and the rear base 11 pass through a third The screw 12 is connected and fixed, the support 2 is arranged on the front base 15 of the base, the support is fixed on the front base 15 by the fourth screw 16, and the rotating shaft 1 is fixed on the support 2 through a bearing; the reply One end of the coil spring 4 passes through the first adapter sleeve 6 provided with a threaded hole, and the first jacking wire 5 passes through the threaded hole of the first adapter sleeve 6 to fix it with the rotating shaft 1, and the other end is fixed by the first screw 14 On the front base 15; one end of the shape memory alloy coil spring 8 passes through the second adapter bushing 10 provided wi...

Embodiment 2

[0025] The difference between this embodiment and Embodiment 1 is that the bracket 2 is arranged between the shape memory alloy coil spring 8 and the return coil spring 4 .

Embodiment 3

[0027] The difference between this embodiment and Embodiments 1 and 2 is that the shape memory alloy coil spring 8 is arranged between the bracket 2 and the return coil spring 4 .

[0028] Principle of the present invention is as follows:

[0029] The driver is composed of a shape memory alloy coil spring, a return coil spring, an adapter sleeve, a rotating shaft, a bearing bracket, a bearing, a front base, a rear base, and a shape-preserving outer frame. In the low temperature state, the nickel-titanium alloy coil spring is tightened under the action of the bias coil spring (the return coil spring is also called the bias coil spring). As the temperature rises, the shape memory alloy coil spring relaxes due to the shape memory effect, overcomes the pretightening force of the bias coil spring, and drives the rotating shaft to rotate and output torque to the outside. After the temperature drops, the bias coil spring tightens the alloy coil spring again, and the driver outputs a...

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PUM

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Abstract

The invention relates to a temperature control torque output drive device, as well as an assembly method and a shape memory alloy coil spring preparation method thereof. The drive device comprises a base, a shape memory alloy coil spring, a reversion coil spring, a first switching shaft sleeve, a second switching shaft sleeve, a rotating shaft, a support, a bearing and a shape-maintaining outer frame, wherein the shape memory alloy coil spring and the reversion coil spring are coaxially arranged. The invention further discloses the preparation method of the shape memory alloy coil spring, and the method comprises a thermal treatment training process and a cold working process. The invention further provides the assembly method of the drive device, and the method comprises the steps of determining assembly sequence of components and pre-tensioning coil spring. The temperature control torque output drive device provided by the invention can output bidirectional running torque to directly produce torque force to be output according to the change of the temperature, and has the characteristics of compact appearance and larger angle stroke.

Description

technical field [0001] The invention relates to a temperature-controlled torque output drive device, an assembly method thereof, and a preparation method of a shape-memory alloy coil spring, belonging to the technical field of temperature change drive. Background technique [0002] With the development of the times, equipment that can only rely on changes in ambient temperature to achieve specific functions has become the focus of research and development in various industries, and temperature-responsive drive components are the core of this type of equipment. [0003] The shape memory effect refers to the characteristic that after a material is deformed, it has the characteristic of returning to its original shape when it reaches a certain temperature. At present, the temperature change actuators made of such materials can be divided into linear force output and torque output according to the output mode. In the existing torque output devices, all of them realize linear fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03G7/04
Inventor 王帮峰吴佳俊芦吉云丁萌顾莉莉张勇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS