Roller shutter machine for preventing screws from loosening by using negative pressure principle

Abstract

The invention relates to the technical field of agricultural science and technology, and discloses a roller shutter machine for preventing screws from loosening by using a negative pressure principle. The roller shutter machine for preventing the screws from loosening by using the negative pressure principle comprises a fixing screw and a shell, wherein the inner wall of the shell is fixedly connected with a fixing cavity, the inner wall of the shell is fixedly connected with an extrusion cavity close to the bottom of the fixing cavity, and the inner wall of the shell is fixedly connected with a first piezoresistor. According to the roller shutter machine for preventing the screws from loosening by using the negative pressure principle, the fixing screw is screwed into the fixing cavity to assemble the roller shutter machine; when the fixing screw is loosened due to vibration in the running process of the roller shutter machine, an extrusion block can move upwards under the action of a first spring, the relative area between a first positive plate and a first negative plate is changed, and a current is generated; an electromagnet is electrified when the current exceeds the minimum resistance value of the first piezoresistor, the electromagnet pulls a magnetic block to drive an air bag to move outwards according to the heteropole attraction principle, and then the electromagnet is attracted to the surface of the fixing screw through cooperative use of an attraction block and the air bag, so that the effect of fixing the fixing screw is achieved.

Description

Technical field [0001] The present invention relates to the technical field of agricultural science and technology, in particular a rolling machine that prevents loose screws from the principle of negative pressure. Background [0002] Agricultural science and technology, mainly for agricultural production science and technology. At present, as the population is growing, people need more and more vegetables, most vegetables are affected by seasonal temperature, and they have started planting vegetables in the greenhouse Most of the average greenhouse sheds are on the greenhouse bracket, a layer of plastic film, to night, using a roller blind to cover a house of grass or insulation, prevent crops from freezing in the cold night. [0003] However, there is still a certain deficiencies in the actual use process, and when the time is longer or frequent use, the screw on the rolling machine will be loose, but cause tight The solid object is loose, and it is slightly caused by various ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a roller blind machine that uses the principle of negative pressure to prevent the screws from loosening.

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