It is suitable for the structure of the satellite to facilitate the assembly of double-layer flanged load-bearing cylinders and laminates

Abstract

The invention provides a structure suitable for satellites to facilitate the assembly of double-layer flange bearing cylinders and laminates, and relates to the technical field of satellite platform structures, including upper decks, double-layer flange bearing cylinders and lower decks. The lower plate is inserted from the upper end of the double-layer flange type load-bearing cylinder and installed on the double-layer flange type load-bearing cylinder; the upper plate is installed on the upper end of the double-layer flange type load-bearing cylinder; wherein, the double-layer method The blue-type load-bearing cylinder includes the upper flange of the load-bearing cylinder and the lower flange of the load-bearing cylinder. In the present invention, through the upper flange of the load-bearing cylinder and the avoidance groove on the laminate, the lower plate can pass through the upper flange of the load-bearing cylinder smoothly, which ensures the smooth installation of the lower plate and solves the problem of using separate parts for the middle and lower plates in the prior art. The current situation of the structure reduces the number of structural parts, reduces the overall weight, and achieves better strength and rigidity of the lower plate, with a simple structure and easy installation.

Description

technical field [0001] The invention relates to the technical field of satellite platform structures, in particular to a structure suitable for satellites that facilitates the assembly of double-layer flange bearing cylinders and laminates. Background technique [0002] When there are two layers of laminates on the satellite, there are usually two layers of mounting flanges on the bearing cylinder. Since the inner and outer diameters of the two flanges are the same, it is difficult for the lower plate to be inserted into the bearing cylinder. In the past, the conventional solution was to divide the lower plate into two halves, and connect the two halves to the lower mounting flange of the load-bearing cylinder respectively, but this would lead to a reduction in the rigidity and strength of the entire star structure and an increase in weight. When the lower plate is divided into two pieces, the lower plate is only suitable for installing light weight and smaller stand-alone ...

AI Technical Summary

Problems solved by technology

Since the inner and outer diameters of the two flanges are the same, it is difficult for the lower plate to be inserted into the load-bearing cylinder

In the past, the conventional solution was to divide the lower plate into two halves, and connect the two halves to the lower mounting flange of the load-bearing tube respectively, but this would lead to a reduction in the rigidity and strength of the whole star structure and an increase in weight

When the lower plate is divided into two pieces, the lower plate is only suitable for installing light weight and smaller stand-alone machines and loads; but when the lower plate is large and heavy in storage tanks, single machines, and loads, the lower plate needs a certain amount of space. Strength and rigidity. At this time, the sub-board of the lower layer not only increases the overall weight of the equipment, but also greatly affects the strength and stiffness of the lower layer.

[0003] Patent document CN108482714A discloses a reinforced central load-bearing cylinder upper frame and its reinforced connection structure, including the upper frame, cylinder body and carbon cloth; the upper frame is a ring, and one end surface of the upper frame is respectively provided with several There are screw holes and several pin holes for installing positioning pins, and the other end surface of the upper frame is provided with a groove for injecting glue and storing liquid; the cylinder is a hollow cylinder, and the middle part of the side of the cylinder is evenly distributed with several through holes along the circumferential direction; The upper frame is coaxially bonded to the end surface of the cylinder, and the seam between the outer side of the upper frame and the inner side of the cylinder is glued through carbon cloth wrapping, but this design is mainly to realize the interface through the cooperation of the upper frame, cylinder and carbon cloth. The reliable connection and the significant improvement of the mechanical support performance make up for the weakness of the traditional load-bearing tube upper frame's weak load-bearing capacity, but still cannot solve the weight, stiffness and strength defects of the lower plate due to the separation.

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