Temperature-sensing driving mechanism

Abstract

The invention relates to a temperature-sensing driving mechanism which is characterized by comprising a bracket, a pocket body arranged on the bracket and a hydraulic system, wherein the hydraulic system comprises a pipeline, an input end of the pipeline communicates with the pocket body tightly, a pipeline of the pocket body and the hydraulic system is filled with liquids communicating each other, an upper half hood body and a lower half hood body clamping the pocket body therebetween are further arranged out of the pocket body, the upper half hood body is connected to the bracket through two or more bidirectional shape memory alloy parts vertically arranged on the left and right sides of the lower part of the pocket body, the lower half hood body is connected to the bracket through two or more bidirectional shape memory alloy parts vertically arranged on the left and right sides of the upper part of the pocket body, and the output end of the hydraulic system is connected to a back end mechanism. The temperature-sensing driving mechanism is driven by the bidirectional shape memory alloy parts and the bidirectional shape memory alloy parts can be arranged in positions, certain distances, away from the back end mechanism as needed, and can sense an environmental temperature.

Description

technical field [0001] The invention relates to the technical field of driving devices, in particular to a temperature-sensitive driving mechanism. Background technique [0002] At present, there is a temperature-sensing driving mechanism based on two-way shape memory alloy. It deforms the two-way shape memory alloy by sensing the change of temperature. This deformation changes the stroke, which can then drive the movement of the rear end mechanism, such as After the door / window is connected, the opening and closing of the door / window can be driven. The temperature-sensing drive mechanism based on two-way shape memory alloy does not require electric drive, saves energy and electricity, has good reliability and low cost, and is especially suitable for occasions where it is inconvenient to obtain power in the field and high temperature and high humidity, such as greenhouses. [0003] However, the existing temperature-sensing drive mechanism still has the following technical p...

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Problems solved by technology

[0003] However, the existing temperature-sensing drive mechanism still has the following technical problems: the two-way shape memory alloy is used as both a sensor and an actuator, and it is directly connected to the rear-end mechanism, which is a solid-solid connection. Where the mechanism is set, the two-way shape memory alloy piece is set there, so that when it is applied to the opening and closing of a door / window in a certain confined space, for example, when the skylight of a greenhouse is opened and closed, due to the opening of the skylight Finally, the cool wind entering from the outside will first lower the temperature of the local area near the skylight, so that the two-way shape memory alloy will sense the temperature drop, and will deform to close the skylight, but in fact the overall temperature in the greenhouse is basically still. did not drop, resulting in the two-way shape memory alloy parts not being able to sense the ambient temperature correctly

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