RU201018U1 - UNIVERSAL ASSEMBLY UNIT FOR FIXING ELEMENTS TO POWER MESH STRUCTURE - Google Patents

Abstract

This utility model relates to the space industry and concerns nodes and elements of fastening of the spacecraft equipment (SC) on its load-bearing structure made of polymer composite materials (PCM). The task to be solved by the claimed utility model is to ensure the fastening of the spacecraft equipment in an arbitrary place power mesh structure (SSK) of any shape, versatility and simplicity of the fastening process, the possibility of dismantling and adjusting the location at the later stages of assembly, the absence of mechanical processing. fastened to the edges of the SSK. In this case, the plate is installed in the required position (in height and angle), providing a plane and a fixation point for installing the spacecraft equipment, and is fixed using two clamps, which are installed on two nearest spiral or circular ribs. Depending on the task, the plate can be made of aluminum alloy, titanium, or composite materials, the plate and clamps are fastened to each other using glued-mechanical fastening. The technical result of this utility model is to provide fastening of the spacecraft equipment to an arbitrary place on the structural different SSK, simplicity of the fastening process, the possibility of dismantling and adjusting the location at the later stages of assembly, due to the lack of mechanical processing.

Description

The present utility model relates to the space industry and concerns nodes and elements of fastening the equipment of a spacecraft (SC) on its load-bearing structure made of polymer composite materials (PCM).

From the existing state of the art, there is a knot for connecting airframe elements of an aircraft made of polymer composite materials (patent RU No. 2412860 C1), in which one element, fixed to the load-bearing frame structure with a dovetail connection, is fastened to another element using a bolted connection. The disadvantages of the known design are:

increased weight;

low manufacturability;

low reliability of fasteners.

Also known is a device and method for asymmetric fastening of parts made of carbon and metal with overlays (patent RU No. 2352497 C2), in which the overlay and counterplate provide strong fastening of structural elements placed between the overlay and the counterlayer, while the counterplate has fewer points than the overlay fastening. The disadvantages of the known design are:

low manufacturability and reliability of fasteners;

fastening structural elements exclusively to flat surfaces.

The closest to the claimed technical solution in terms of the technical essence and the achieved technical result is the unit for fixing the equipment to the power mesh structure made of polymer composite materials (patent RU No. 2535780 C3), in which the equipment fixing unit consists of fastening and support pads fastened to the power mesh element constructions (SSK). The pads are made with the angle of inclination of the guiding edges, which coincides with the angle of inclination of the ribs of the CCK. The support plate rests against the crosshair of the CCK and serves to attach the mounting plate, which, in turn, creates a plane and a fixation point for installing the equipment. This technical solution was taken as a prototype of a utility model. The disadvantages of the known design are:

when changing the angle of inclination of the edges of the SSK, it is necessary to change the configuration of the linings;

the location of this structure is limited by the configuration of the SSC ribs.

The task to be solved by the claimed utility model is to ensure fastening of the spacecraft equipment in an arbitrary place on the SCS of any shape, the versatility and simplicity of the fastening process, the possibility of dismantling and adjusting the location at the later stages of assembly, and the absence of mechanical processing.

The problem is solved by the fact that the universal unit for attaching elements to the SSK consists of a plate and clamps installed on the edges of the SSK. In this case, the plate is installed in the required position (in height and angle), providing a plane and a fixation point for installing the spacecraft equipment, and is fixed using two clamps, which are installed on two nearest spiral or circular ribs. Depending on the task at hand, the plate can be made of aluminum or titanium alloy, as well as of composite materials; the plate and clamps are fastened to each other using a glued-mechanical connection.

The declared universal attachment point provides:

the ability to install a universal attachment point on structurally different SSK (universality);

simplicity of the fastening process;

the possibility of dismantling and adjusting the location at later stages of assembly due to the lack of mechanical processing.

The essence of the utility model is illustrated by the drawings shown in FIG. 1-11:

fig. 1, 2, 3 - options for installing a universal attachment point to the SSK from PCM;

fig. 4 is a section AA shown in FIG. 1, 2, 3.

fig. 5 - installation of a universal attachment point on structurally different SSK;

fig. 6 - general view of SSK with a universal attachment point;

fig. 7, 9, 10 - versions of the universal mounting unit;

fig. 8 - section b-b shown in Fig. 7;

fig. 11 is a section B-B shown in FIG. ten.

The universal fastening unit includes a plate 1, two clamps 2 located at the edges of the plate and fasteners 4 connecting the plate 1 and the clamps 2 to each other. Plate 1 is made with a technological allowance 6 (in length and height), which, during its installation on CCK 3, is trimmed in place, depending on the position of the clamps 2. A central hole is also made in plate 1, along which it is installed in a given position, then Taking into account the configuration of SSK 3 (the angle of inclination of the spiral ribs), on the opposite side of the SSK 3, clamps 2 are installed along the circular or spiral ribs of CCK 3. Further, along the guide holes in the clamps 2, holes are made in plate 1. Clamps 2 are fixed with plate 1 using a fixing element 4, providing a surface for installing spacecraft equipment with a fixation point. All contact surfaces and gaps between the parts pos. 1, 2, 3 and 4 are filled with glue for strengthening. The relative position of plate 1 and clamps 2 may vary depending on the location of the equipment on the SSK 3.

The universal attachment unit provides for various methods of installation on the SSK 3. The installation of the plate 1 is performed both on the spiral ribs (Fig. 1, 3) and on the annular (Fig. 2).

Installation of a universal attachment unit can be carried out on structurally different SSK, regardless of the configuration. Changing the angle of inclination and thickness of both the spiral and circular ribs of the SSC does not affect the design of the universal attachment point (Fig. 5).

FIG. 7, 9, 10 show variants of the universal fastening unit, depending on the purpose.

FIG. 7 shows a universal fastener with a protruding surface - a boss. Before installing the equipment, the boss is machined (plane D), providing the necessary flatness, and the hole is machined for the required fastener.

FIG. 9 shows a universal attachment point for metallization of SCS with spacecraft equipment, this is necessary to bring all parts of the spacecraft product to the same electric potential. Before installing the plate 1 at the points of contact of the clamps 2 with the edges of the SSK 3, the surfaces are degreased, and then installation is performed.

FIG. 10 - a universal attachment unit with an adjustable sleeve 5, with which it is possible to adjust the clearance with the spacecraft equipment, providing a seat (plane K) without machining.

The technical result of the present utility model is to ensure fastening of the spacecraft equipment in an arbitrary place on structurally different SSCs, simplicity of the fastening process, the possibility of dismantling and adjusting the location at later stages of assembly, due to the absence of mechanical processing.

Claims (4)

1. A universal unit for attaching elements to a power mesh structure (SSK), consisting of fastening and support plates installed on the ribs of the SSK, characterized in that the fixing strips are made in the form of clamps, and the support plate is made in the form of a plate. 2. A universal attachment unit according to claim 1, characterized in that the plate can be made of a metal alloy or composite materials. 3. A universal attachment unit according to claim 2, characterized in that the attachment of elements to the SSC can be carried out in an arbitrary place on structurally different SSC. 4. A universal attachment unit according to claim 2, characterized in that it is possible to dismantle and adjust the location at later stages of assembly.

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