Box-type combined metal plate support and assembling method thereof

Abstract

The invention provides a box type combined metal plate support and an assembling method thereof, the support comprises a main plate, a left side plate, a right side plate and a base plate, the left side plate and the right side plate are respectively installed on two sides of the main plate, and the base plate is installed on the main plate; the main plate, the left side plate and the right side plate are all sheet metal parts, and the base plate is a machining part; the contact face of the base plate and equipment is an equipment installation face, machining allowance is reserved on the equipment installation face in the part state, and the equipment installation face is integrally machined after the box-type combined metal plate support is assembled so as to meet the installation precision requirement of the equipment. The combined metal plate support has the remarkable advantages of being light in weight, low in cost and high in production efficiency on the basis that the requirement for equipment installation precision is met, and the manufacturing and launching cost of spacecraft general assembly straight parts can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of aerospace equipment installation, and particularly to a combined sheet metal bracket for the installation of large pointing equipment. Background Art

[0002] At present, when installing large pointing equipment with precision requirements outside the spacecraft cabin, such as phased array antennas, optoelectronic combinations, etc., the brackets used are mostly machined parts. Large machined parts need to use aluminum forging blanks, and this manufacturing method has high raw material costs and long production cycles. Summary of the Invention

[0003] The purpose of the present invention is to provide a box-shaped combined sheet metal bracket and its assembly method, which can meet the installation requirements of large pointing equipment on the spacecraft at a lower cost and weight cost.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A box-shaped combined sheet metal bracket includes a main board, a left side board, a right side board and a backing plate. The left side board and the right side board are respectively installed on both sides of the main board, and the backing plate is installed on the main board. The main board, the left side board and the right side board are all sheet metal parts, and the backing plate is a machined part. The contact surface of the backing plate with the equipment is the equipment installation surface, and this equipment installation surface has machining allowance in the part state. After the box-shaped combined sheet metal bracket is assembled, the overall machining of this equipment installation surface is carried out to meet the installation accuracy requirements of the equipment.

[0006] For the above box-shaped combined sheet metal bracket, the main board is a Ω-shaped sheet metal part, and the shape and size of the main board depend on the installation form, outer contour size and installation polarity of the equipment. Equipment openings, electrical connector operation holes and weight reduction holes are opened on the main board.

[0007] For the above box-shaped combined sheet metal bracket, the shape and size of the left side board and the right side board are both matched with the structure of the main board, and the left side board and the right side board are box-shaped sheet metal parts that are mirror images of each other. The left side board and the right side board are respectively riveted on both sides of the main board, and the three are combined to form a box-shaped structure.

[0008] For the above box-shaped combined sheet metal bracket, weight reduction holes are opened on the wall plates of the left side board and the right side board. Flanges are provided on each side of the wall plates of the left side board and the right side board, and adjacent flanges are welded or riveted to form a box-shaped structure.

[0009] For the above box-shaped combined sheet metal bracket, the backing plate is a frame structure with a certain thickness, and the size of the opening of the backing plate is the same as the size of the equipment opening on the main board.

[0010] The above box-shaped combined sheet metal bracket, wherein a number of kidney-shaped regions are provided on the outer surface of the backing plate, and equipment mounting holes are opened in each kidney-shaped region; except for the kidney-shaped regions, the rest of the outer surface of the backing plate is an equipment mounting surface.

[0011] The above box-shaped combined sheet metal bracket, wherein the backing plate, the main board and the pallet nut are stacked in sequence. At the kidney-shaped region, the backing plate, the main board and the pallet nut are riveted into a whole by countersunk head rivets. The equipment mounting hole of the backing plate communicates with the threaded hole of the pallet nut, and the pallet nut provides a threaded hole for equipment installation.

[0012] An assembly method of a box-shaped combined sheet metal bracket includes:

[0013] 1) Complete the processing and surface treatment of the main board, and prefabricate rivet holes at the positions connecting the left side plate, the right side plate and the backing plate;

[0014] 2) Complete the processing and surface treatment of the left side plate and the right side plate. When flanging and welding, the weld reinforcement should be controlled to avoid interference between the weld and the main board when the left side plate and the right side plate are assembled with the main board;

[0015] 3) Complete the machining and surface treatment of the backing plate. There is machining allowance left on the equipment mounting surface of the backing plate, and the opening and equipment mounting holes are made in the part state;

[0016] 4) Rivet the left side plate to the main board using the flange, and rivet the right side plate to the main board using the flange to obtain the main box-shaped structure of the bracket. After riveting, it should be ensured that the overall flatness of the bracket mounting surface formed by the flanges under the assembled and pressed state. If the flatness cannot meet the requirements, when establishing the reference for the overall machining of the bracket, level it with copper gaskets;

[0017] 5) Assemble the backing plate and the main board through countersunk head rivets and pallet nuts. The pallet nut provides threaded holes for equipment installation;

[0018] 6) Fix the assembled bracket on the processing platform. If there is a gap between the bracket mounting surface and the processing platform, level it with copper gaskets. After pasting the copper gaskets to the corresponding positions of the bracket mounting surface, fix it on the processing platform again;

[0019] 7) Complete the overall machining of the equipment mounting surface of the backing plate to meet the equipment installation accuracy requirements;

[0020] 8) After the overall machining is completed, perform anti-corrosion treatment on the equipment mounting surface of the backing plate.

[0021] Compared with the prior art, the beneficial technical effects of the present invention are:

[0022] 1) For traditional brackets for installing large pointing devices outside the spacecraft cabin, most are machined parts, using aluminum forging blanks or composite materials, with high costs. The box-shaped combined sheet metal bracket provided by the present invention saves raw materials, and the manufacturing cost can be saved by about 60% or more compared with machined parts;

[0023] 2) Compared with machined parts, sheet metal parts have a short material preparation cycle, mature production processes, do not require special molds, are suitable for mass production, and the production cycle can be shortened by more than 80%;

[0024] 3) The combined sheet metal bracket provided by the present invention adopts a box-shaped structure. Compared with traditional sheet metal parts, it has higher overall stiffness and is more conducive to meeting the flight environmental conditions of aerospace equipment;

[0025] 4) Limited by sheet metal technology, traditional sheet metal parts cannot meet the installation requirements of high-precision equipment. The box-shaped combined sheet metal bracket provided by the present invention realizes the overall machining of the equipment installation surface of the bracket by riveting pads on the main structure (i.e., the main board) of the bracket, and can meet higher-precision installation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The box-shaped combined sheet metal bracket and its assembly method of the present invention are given by the following embodiments and drawings:

[0027] Figure 1 It is a schematic three-dimensional structure diagram of the box-shaped combined sheet metal bracket of the preferred embodiment of the present invention.

[0028] Figure 2 It is a schematic three-dimensional structure diagram of the main board in the preferred embodiment of the present invention.

[0029] Figure 3 It is a schematic three-dimensional structure diagram of the left side plate in the preferred embodiment of the present invention.

[0030] Figure 4 It is a schematic three-dimensional structure diagram of the right side plate in the preferred embodiment of the present invention.

[0031] Figure 5 It is a schematic three-dimensional structure diagram of the pad in the preferred embodiment of the present invention.

[0032] Figure 6 It is a schematic three-dimensional structure diagram of the bracket after installing the equipment in the preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following will further describe in detail Figures 1 to 6 the box-shaped combined sheet metal bracket and its assembly method of the present invention.

[0034] Figure 1 Shown is a schematic three-dimensional structure diagram of the box-shaped combined sheet metal bracket of the preferred embodiment of the present invention.

[0035] As Figure 1 , the box-shaped combined sheet metal bracket of this embodiment includes a main board 1, a left side board 2, a right side board 3 and a backing plate 4; the main board 1, the left side board 2 and the right side board 3 are all sheet metal parts, and the backing plate 4 is a machined part for ensuring the equipment installation accuracy;

[0036] The left side board 2 and the right side board 3 are respectively installed on both sides of the main board 1, and the backing plate 4 is installed on the main board 1.

[0037] Figure 2 Shown is a schematic three-dimensional structure diagram of the main board in a preferred embodiment of the present invention.

[0038] As Figure 2 , the main board 1 is a Ω-shaped sheet metal part, including three connected surfaces in sequence; an equipment opening 1a is provided on the first surface, an electrical connector operation hole 1b is provided on the second surface, and a plurality of waist-shaped weight-reducing holes 1c are provided on the third surface; flanges (1d, 1e) are provided at both ends of the main board 1, and the two flanges 1d and 1e are the installation surfaces of the box-shaped combined sheet metal bracket. The design of the shape and size of the main board 1 depends on the installation form, external dimensions and installation polarity requirements of the equipment.

[0039] Figure 3 Shown is a schematic three-dimensional structure diagram of the left side board in a preferred embodiment of the present invention.

[0040] As Figure 3 , a circular weight-reducing hole 2e is provided on the wall plate 2f of the left side board 2; flanges are provided on each side of the wall plate 2f, and adjacent flanges are welded or riveted, so that the left side board 2 is integrally in a box-shaped structure, improving the stiffness of the left side board. The shape and size of the left side board 2 match the structure of the main board 1. In this embodiment, the wall plate 2f of the left side board 2 is a quadrilateral flat plate structure, and flanges (2a, 2b, 2c, 2d) are provided on the four sides of the flat plate structure. The flanges 2a, 2b, 2c and 2d are sequentially connected and connected end to end by welding or riveting to form a box-shaped structure. The flanges 2a, 2b and 2d are the installation surfaces for the left side board 2 to connect to the main board 1, and the flange 2c is the installation surface of the box-shaped combined sheet metal bracket.

[0041] Figure 4 Shown is a schematic three-dimensional structure diagram of the right side board in a preferred embodiment of the present invention.

[0042] As Figure 4, a circular weight-reducing hole 3e is formed in the wall plate 3f of the right side plate 3; flanges are provided on each side of the wall plate 3f, and adjacent flanges are welded or riveted to each other, so that the whole right side plate 3 is in a box-shaped structure, improving the stiffness of the right side plate. The outer shape and dimensions of the right side plate 3 match the structure of the main board 1. In this embodiment, the wall plate 3f of the right side plate 3 is a quadrilateral flat plate structure, and flanges (3a, 3b, 3c, 3d) are provided on the four sides of the flat plate structure. The flanges 3a, 3b, 3c and 3d are connected in sequence and end to end by welding or riveting to form a box-shaped structure. The flanges 3a, 3b and 3d are the mounting surfaces for connecting the right side plate 3 to the main board 1, and the flange 3c is the mounting surface of the box-shaped combined sheet metal bracket.

[0043] The left side plate 2 and the right side plate 3 are mirror-image box-shaped sheet metal parts.

[0044] Figure 5 The figure shows a three-dimensional structural schematic diagram of a backing plate in a preferred embodiment of the present invention.

[0045] See Figure 5 , the backing plate 4 is in a frame structure, and the size of the opening 4a of the backing plate 4 is the same as the size of the equipment opening 1a of the main board 1; a plurality of kidney-shaped areas 4b are provided on the outer surface of the backing plate 4, and equipment mounting holes 4d are formed in each kidney-shaped area 4b; except for the kidney-shaped areas 4b on the outer surface of the backing plate 4, the rest are equipment mounting surfaces 4c, and the equipment mounting surfaces 4c have machining allowances in the part state and are machined integrally after the box-shaped combined sheet metal bracket is assembled to ensure the equipment installation accuracy; as Figure 1 , the backing plate 4, the main board 1 and the support plate nut 6 are stacked in sequence. At the kidney-shaped area 4b, the backing plate 4, the main board 1 and the support plate nut 6 are riveted into a whole through a countersunk head rivet 5. The equipment mounting hole 4d of the backing plate 4 communicates with the threaded hole of the support plate nut 6, and the support plate nut 6 provides a threaded hole for equipment installation.

[0046] In this embodiment, the backing plate 4 is a rectangular frame structure with a thickness of 2 mm, and 16 kidney-shaped areas 4b are provided on the outer surface of the backing plate 4.

[0047] Combined with Figure 1 and Figure 6 , through the mounting holes on the flange 7a of the equipment 7, the equipment mounting holes 4d of the backing plate 4 and the support plate nut 6, the equipment 7 is assembled to the backing plate 4. The main body of the equipment 7 enters the box-shaped combined sheet metal bracket through the opening 4a of the backing plate 4 and the equipment opening 1a of the main board 1. The electrical interface 7b of the equipment 7 is exposed at the electrical connector operation hole 1b of the main board 1, which facilitates the plugging and unplugging operation of the electrical connector of the equipment 7.

[0048] The assembly method of the box-shaped combined sheet metal bracket in this embodiment includes:

[0049] 1) Complete the processing and surface treatment of the main board 1, and prefabricate rivet holes 1f at the positions connecting the left side plate, right side plate, and backing plate.

[0050] 2) Complete the processing and surface treatment of the left side plate 2 and right side plate 3. When flanging and welding, the weld bead height (2g, 3g) should be controlled to avoid interference between the weld bead and the main board 1 when the left side plate 2 and right side plate 3 are assembled with the main board 1.

[0051] 3) Complete the machining and surface treatment of the backing plate 4. A machining allowance is left on the equipment installation surface 4c of the backing plate 4, and the opening 4a and equipment installation holes 4d are made in the part state.

[0052] 4) Rivet the flanges 2a, 2b, and 2d of the left side plate 2 to the main board 1 respectively, and rivet the flanges 3a, 3b, and 3d of the right side plate 3 to the main board 1 respectively to obtain the main box-shaped structure of the bracket. After riveting, the overall flatness of the bracket installation surface formed by the flanges 1d and 1e of the main board 1 and the flanges 2c of the left side plate 2 and 3c of the right side plate 3 in the assembled and compressed state should be ensured. If the flatness cannot meet the requirements, when establishing the benchmark for the overall machining of the bracket, it should be leveled with copper gaskets.

[0053] 5) Assemble the backing plate 4 and the main board 1 through countersunk head rivets 5 and plate nuts 6. The plate nut 6 provides threaded holes for equipment installation.

[0054] 6) Fix the assembled bracket on the processing platform. If there is a gap between the bracket installation surface and the platform, level it with copper gaskets. After pasting the copper gaskets to the corresponding positions of the bracket installation surface, fix it again on the processing platform.

[0055] 7) Complete the overall machining of the equipment installation surface 4c of the backing plate 4 to meet the equipment installation accuracy requirements.

[0056] 8) After the overall machining is completed, perform anti-corrosion treatment on the equipment installation surface 4c of the backing plate.

[0057] The present invention provides a box-shaped combined sheet metal bracket riveted by multiple sheet metal parts and a machined backing plate. On the basis of meeting the equipment installation accuracy, the bracket has significant advantages such as light weight, low cost, raw material saving, and high production efficiency, which can directly reduce the manufacturing and launch costs of the directly affiliated parts of spacecraft assembly. The present invention has been verified by ground and flight tests. The bracket design is reasonable and can meet the equipment installation accuracy and flight environment requirements.

[0058] The embodiments described above are only for better explaining the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention, and do not constitute a limitation to this patent. Obviously, according to this specification, those skilled in the art can make many modifications and improvements to this patent. For example, using the design concept of the box-shaped combined sheet metal bracket in this patent to complete the installation on other medium and large-sized pointing single machines, and these all fall within the protection scope of this patent.

Claims

1. A box-shaped combined sheet metal bracket, characterized in that It includes a main board, a left side plate, a right side plate and a backing plate. The left side plate and the right side plate are respectively installed on both sides of the main board, and the backing plate is installed on the main board. The main board, the left side plate and the right side plate are all sheet metal parts, and the backing plate is a machined part. The contact surface of the backing plate with the equipment is the equipment installation surface, and machining allowance is left on this equipment installation surface in the part state. After the box-shaped combined sheet metal bracket is assembled, the whole machining of this equipment installation surface is carried out to meet the installation accuracy requirements of the equipment.

2. The box-shaped combined sheet metal bracket according to claim 1, characterized in that The main board is a Ω-shaped sheet metal part, and the shape and size of the main board depend on the installation form, outer contour size and installation polarity of the equipment. Equipment openings, electrical connector operation holes and weight reduction holes are opened on the main board.

3. The box-shaped combined sheet metal bracket according to claim 1, wherein, The shapes and sizes of the left side plate and the right side plate both match the structure of the main board, and the left side plate and the right side plate are box-shaped sheet metal parts that are mirror images of each other. The left side plate and the right side plate are respectively riveted to both sides of the main board, and the three are combined to form a box-shaped structure.

4. The box-shaped combined sheet metal bracket according to claim 3, wherein Weight reduction holes are opened on the wall plates of the left side plate and the right side plate. Flanges are provided on each side of the wall plates of the left side plate and the right side plate, and adjacent flanges are welded or riveted to form a box-shaped structure.

5. The box-shaped combined sheet metal bracket according to claim 2, characterized in that, The backing plate is a frame structure with a certain thickness, and the size of the opening of the backing plate is the same as that of the equipment opening on the main board.

6. The box-shaped combined sheet metal bracket according to claim 5, wherein, A number of waist-shaped areas are provided on the outer surface of the backing plate, and equipment installation holes are opened in each waist-shaped area. Except for the waist-shaped areas, the rest of the outer surface of the backing plate is the equipment installation surface.

7. The box-shaped combined sheet metal bracket according to claim 6, characterized in that, The backing plate, the main board and the panel nuts are stacked in sequence. At the waist-shaped area, the backing plate, the main board and the panel nuts are riveted into a whole through countersunk head rivets. The equipment installation holes of the backing plate are communicated with the threaded holes of the panel nuts, and the panel nuts provide threaded holes for equipment installation.

8. An assembly method of a box-type combined sheet metal bracket according to any one of claims 1 to 6, characterized in that, It includes: 1) Complete the machining and surface treatment of the main board, and prefabricate rivet holes at the positions connecting the left side plate, the right side plate and the backing plate; 2) Complete the machining and surface treatment of the left side plate and the right side plate. When welding the flanges, the weld reinforcement should be controlled to avoid interference between the weld and the main board when the left side plate and the right side plate are assembled with the main board; 3) Complete the machining and surface treatment of the backing plate. Machining allowance is left on the equipment installation surface of the backing plate, and openings and equipment installation holes are made in the part state; 4) Rivet the left side plate to the main board using the flange, and rivet the right side plate to the main board using the flange to obtain the main box-shaped structure of the bracket. After riveting, it should be ensured that the overall flatness of the bracket installation surface formed by the flanges under the assembled and pressed state. If the flatness cannot meet the requirements, when establishing the reference for the overall machining of the bracket, it should be leveled with copper gaskets; 5) Assemble the backing plate and the main board through countersunk head rivets and panel nuts, and the panel nuts provide threaded holes for equipment installation; 6) Fix the assembled bracket on the machining platform. If there is a gap between the bracket installation surface and the machining platform, level it with copper gaskets. After pasting the copper gaskets to the corresponding positions of the bracket installation surface, fix it again on the machining platform; 7) Complete the overall machining of the equipment installation surface of the backing plate to meet the installation accuracy requirements of the equipment; 8) After the overall machining is completed, carry out anti-corrosion treatment on the equipment installation surface of the backing plate.

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