Screen rolling device for greenhouse

Abstract

The invention relates to a screen rolling device for a greenhouse, which comprises a motor and a speed reducer, wherein the motor is connected with an input shaft of the speed reducer; two ends of an output shaft of the speed reducer are connected with screen rolling shafts respectively; the output shaft is connected with the screen rolling shafts by splines; external threads are formed at ends of the rolling screen shafts, close to the speed reducer; fixing seats are arranged on the two sides of the speed reducer respectively and are in threaded connection with the screen rolling shafts; when the screen rolling device is in use, the output shaft rotates to drive the screen rolling shafts rotate; and as the screen rolling shafts are in threaded connection with the fixing seats, the screen rolling shafts move axially while rotating to ensure that pull ropes are wound on the screen rolling shafts in the axial directions of the screen rolling shafts uniformly. As a support device comprises guide sleeves, the screen rolling shafts rotate and axially move more stably, and a rolling screen is rolled up and unrolled safely, stably and reliably. According to the screen rolling device, rolling-up and unrolling of the rolling screen are realized by forward rotation and reverse rotation of the motor; time and labor are saved; and the screen rolling efficiency is improved.

Description

technical field [0001] The invention relates to a device for a greenhouse, in particular to a roller blind device for a greenhouse. Background technique [0002] In order to keep warm at night in winter, the existing greenhouses are covered with roller blinds on the plastic film of the greenhouse. During the day, the roller blinds are rolled up to increase the light and promote the growth of crops. At night, the roller blinds are put down to keep the greenhouse. temperature inside. [0003] At present, the roller blinds of thermal insulation greenhouses are usually pulled by human hands. People need to go to the top of the greenhouse and pull the roller curtain ropes one by one to roll up the roller blinds. In order to improve the efficiency of roller blinds, some automatic roller blind devices have appeared, such as pole-type roller blind devices, which use the opening angle of the poles to realize the rolling up and down of the roller blinds. Although this method can imp...

AI Technical Summary

Problems solved by technology

[0003] At present, the roller blinds of thermal insulation greenhouses are usually pulled by human hands. People need to go to the top of the greenhouse and pull the roller curtain ropes one by one to roll up the roller blinds. In order to improve the efficiency of roller blinds, some automatic roller blind devices have appeared, such as pole-type roller blind devices, which use the opening angle of the poles to realize the rolling up and down of the roller blinds. Although this method can improve the efficiency of the roller blind, it is very dangerous when the roller blind is rolled up and down due to the relatively high pole, and it is not stable enough when the roller blind is rolled up and down.

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