A thermal insulation cabin switch cover device

Abstract

The invention relates to a heat preservation cabin switch cover device, which includes a servo motor, a transmission shaft and two electric cylinders arranged at intervals. The electric cylinder includes a cylinder body. The set lower support is hinged, the cylinder is provided with a screw and a worm, the lower end of the screw is coaxially fixed with a worm gear meshing with the worm, the screw is set with a nut that matches it, and there is a screw between the nut and the cylinder. Guide mechanism along the axial direction, the upper side of the nut is coaxially fixed with a piston rod, the upper end of the piston rod protrudes from the cylinder body and is fixed with an upper lug, the upper lug is hinged with the corresponding upper support on the hatch cover, and the transmission shaft The two ends of the two electric cylinders are respectively coaxially connected with the worms of the two electric cylinders through the coupling. The servo motor is fixed on the other side of the electric cylinder relative to the transmission shaft. The output shaft of the servo motor is connected with the electric cylinder through the coupling. Worm coaxial connection. It has the advantages of simple structure, convenient control, good synchronization and high reliability.

Description

technical field [0001] The invention relates to a lifting device, in particular to a switch cover device for a thermal insulation cabin. Background technique [0002] In the field of aerospace, products such as rockets are usually stored and transported in insulated cabins (boxes). The insulation cabin needs to be equipped with a hatch cover to provide avoidance space for products entering and leaving the insulation cabin when the cover is opened, and to provide a constant temperature and humidity environment for the product when the cover is closed. The opening and closing mechanism of the existing thermal insulation cabin usually uses hydraulic cylinders arranged at intervals as the actuators, and is synchronously controlled through hydraulic pipelines and hydraulic valves. This method has the following problems in practical applications: 1) It needs to be arranged for a long time The hydraulic pipeline system is relatively complex, and it is not easy to maintain, and the...

AI Technical Summary

Problems solved by technology

The opening and closing mechanism of the existing thermal insulation cabin usually uses hydraulic cylinders arranged at intervals as the actuators, and is synchronously controlled through hydraulic pipelines and hydraulic valves. This method has the following problems in practical applications: 1) It needs to be arranged for a long time The hydraulic pipeline system is relatively complex, and it is not easy to maintain, and there is a risk of pipeline leakage, which affects safety and reliability; 2) The integrated design of drive control and actuator cannot be realized, and the control is difficult and the synchronization is poor , cannot meet the switch requirements of large-span (above 3m) hatch covers

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