CN116002073A - Plate-shell-beam combined type large-bearing satellite cabin section connecting structure - Google Patents
Plate-shell-beam combined type large-bearing satellite cabin section connecting structure Download PDFInfo
- Publication number
- CN116002073A CN116002073A CN202211512062.1A CN202211512062A CN116002073A CN 116002073 A CN116002073 A CN 116002073A CN 202211512062 A CN202211512062 A CN 202211512062A CN 116002073 A CN116002073 A CN 116002073A
- Authority
- CN
- China
- Prior art keywords
- shell
- frame
- cylinder shell
- section
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
The invention provides a plate-shell-beam combined type large-bearing satellite cabin section connecting structure which meets the requirements of a supporting structure for connecting large-scale remote sensing satellite cabin sections and large-scale loads; comprises a cylinder shell, a bearing frame, a variable cross section end frame, a connecting sheet between the frame and the cylinder shell, a connecting angle box between the frame and the cylinder shell and a connecting piece between the frame and the cylinder shell root; the bearing frame penetrates through the cylinder shell and is fixed on the variable cross-section end frame; the cylinder shell and the bearing frame are connected with a cylinder shell connecting piece and a cylinder shell connecting corner box through the frame; the cylinder shell is connected with the variable cross-section end frame through a cylinder shell root connecting piece, and a cylinder shell root heat insulation pad is arranged at the cylinder shell root; the barrel shell is provided with a connection interface with the propulsion service cabin, the bearing frame provides an installation interface of large-scale load equipment and an interface of a load cabin section, and the variable cross-section end frame can provide an installation interface of small-scale equipment and a bracket.
Description
Technical Field
The invention relates to a plate-shell-beam combined type large-bearing satellite cabin section connecting structure, which is suitable for a main structure of a spacecraft needing to be provided with a large effective load, and belongs to the technical field of spacecraft structures.
Technical Field
The remote sensing satellite cabin connecting structure is a transition structure between a satellite platform and various large remote sensing loads, and due to diversity of remote sensing tasks and along with the increasing of the precision of large remote sensing satellites, the satellite cabin connecting structure is required to have good adaptability to different loads, large load bearing (not less than 2500 kg) and high stability (in-orbit thermal deformation not more than 50 mu m).
The large remote sensing satellite generally carries a plurality of large cameras, the main camera load is generally arranged at the top of a satellite body or at the bottom of a load cabin, and a belted satellite and rocket unlocking device is generally adopted as an interface between the large remote sensing satellite and a carrier rocket. Under the constraint of the task characteristics and the configuration layout, the main structure of the large remote sensing satellite at home and abroad takes a multi-cabin-section structure with a shell, a box plate or a truss as a main part, the service cabin is a bearing cylinder, a box plate or a truss structure. When the load cabin bottom plate is used as a structural foundation of the load cabin and a supporting structure of a large load, in order to meet the requirements of high rigidity, high strength and light weight of reliable connection of the load cabin and a service cabin, a frame plate type structure (also called as a planar framework structure) is often adopted for a plurality of satellite load cabin bottom plates at home and abroad, such as a satellite of SPOT in France, a satellite load cabin bottom plate of China 'resource No. two'.
The frame plate type structure is used as a connecting structure of two cabins, has higher rigidity and strength, is convenient to operate and can adapt to various mechanical interfaces, but is limited by the characteristics of the frame plate type structure:
1) The bending rigidity of the frame plate type structure is limited, so that the frame plate type structure is difficult to adapt to the installation requirement of ultra-large load, two beams close to orthogonal to each other are required to be added at the position needing to act on the large load to transfer the three-way load, the configuration layout design of the beams is relatively complex, and the expansion of a load installation surface is complex, so that the expansibility of the effective load installation surface is poor;
2) The height of the frame plate type structure is higher and is generally more than 1m, so that the height of the mass center of the whole star is higher, and the bearing of large-scale load is not facilitated;
3) The frame plate type structure has the function of installing instruments and equipment at the same time, and the instruments and equipment generally have heat dissipation requirements, so that the structural plate is difficult to fully use carbon fiber materials with low thermal expansion coefficients, and the large area of a cold space is unfavorable for precise temperature control, so that the thermal deformation of the structural plate is large, and the dimensional stability is poor. For the frame plate structure, the temperature change of the aluminum honeycomb plate is not less than +/-20 ℃ and the height is not less than 1m, so the thermal deformation of the frame plate outer plate is not less than 2.4x10 -5 ×20×1＝48×10 -5 m＝480μm。
Disclosure of Invention
In view of the above, the invention provides a plate-shell-beam combined type large-bearing satellite cabin section connecting structure, which overcomes the defects of the existing 'frame plate type cabin section connecting structure', provides a cabin section connecting structure with large bearing, high rigidity, easily-expanded load mounting surface, lower height and high dimensional stability, and meets the requirements of a supporting structure for large-scale remote sensing satellite cabin section connection and large load.
The technical scheme adopted for solving the technical problems is as follows:
a plate-shell-beam combined type large-bearing satellite cabin section connecting structure comprises a cylinder shell, a bearing frame, a variable-section end frame, a frame-cylinder shell connecting piece, a frame-cylinder shell connecting angle box and a cylinder shell root connecting piece; the bearing frame penetrates through the cylinder shell and is fixed on the variable cross-section end frame; the cylinder shell and the bearing frame are connected with a cylinder shell connecting piece and a cylinder shell connecting corner box through the frame; the cylinder shell is connected with the variable cross-section end frame through a cylinder shell root connecting piece, and a cylinder shell root heat insulation pad is arranged at the cylinder shell root; the barrel shell is provided with a connection interface with the propulsion service cabin, the bearing frame provides an installation interface of large-scale load equipment and an interface of a load cabin section, and the variable cross-section end frame can provide an installation interface of small-scale equipment and a bracket.
Further, the cartridge shell comprises a cartridge shell lower flange, a cartridge shell column section and a cartridge shell upper flange, and deep grooves and wide grooves are formed in the positions where the cartridge shell column section, the cartridge shell upper flange and the bearing frame are intersected.
Further, the bearing frame comprises 2 main beams, 2 secondary beams and 2 auxiliary beams; the 2 main beams are arranged in parallel, and the interval between the two main beams can be adjusted according to different load interfaces; the 2 secondary beams and the 2 auxiliary beams are arranged in parallel and are vertical to the 2 main beams, and the interval between the two secondary beams and the 2 auxiliary beams can be adjusted according to different load interfaces; the girder adopts an I-shaped section; the main beam and the secondary beam are designed in an isosceles trapezoid, and the heights of the side surfaces of the main beam and the secondary beam and the auxiliary beam are lower.
Further, 4 groups of mounting points of the large-scale load equipment are arranged at the intersection position of the main beam and the secondary beam, and the other 4 groups of mounting points 2001 are arranged at the end part of the main beam; the interface part of the load cabin section is arranged on the secondary beam and the auxiliary beam.
Further, the variable cross-section end frame comprises an end face and a reinforcing flanging, wherein a mounting interface of large-scale load equipment and a screw connection avoidance hole of an interface of a load cabin section are reserved on the end face.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the plate-shell-beam combined type large-bearing satellite cabin section connecting structure fully exerts the loading advantages of all structural members, and longitudinal loads of large-scale load equipment and a load cabin section structure are transmitted to a cylinder shell through a bearing frame and are diffused into uniform loads; the lateral load of the large load equipment, load deck structure is transferred downwards in two forms: one is the shear force, which is transmitted to the cartridge housing primarily through the variable cross-section end bells; the other is that the bending moment is converted into local pulling pressure, the pulling pressure is transmitted to the cylinder shell through the bearing frame, and the complex concentrated large load and the square cabin load are decomposed into uniform load of the cylinder shell end frame by using the loading advantages of each structure of the plate, the shell and the beam.
Secondly, the invention has high overall rigidity and strong bearing capacity, and the load mounting surface is easy to expand. The plate-shell beam assembly is combined, the loaded advantage of each structural member is exerted, the structure has higher three-way rigidity and strength, the normal rigidity of the structure depends on the design parameters of the bearing frame and the shell structure, and the transverse rigidity depends on the design parameters of the variable-section end frame, the bearing frame and the shell structure. The normal rigidity of the structure can be greatly improved by improving the heights of the bearing frame and the cylinder shell structure. The square and round transition structure form is efficiently realized.
Thirdly, the invention utilizes the loading advantages of each structure of the plate, the shell and the beam to realize the resolution of the complex concentrated large load and the square cabin load into the uniform load of the end frame of the cylinder shell. The design of the plate-shell beam combined cabin section connecting structure, the spacing between 2 main beams of the bearing frame, the spacing between 2 secondary beams and the spacing between 2 auxiliary beams can be adjusted according to the layout position and the interface form of the large-scale load and cabin section structure, and besides the bearing frame can be used for installing the large-scale load equipment and the cabin section structure, the cylinder shell structure can also be used as the installation interface of the structures such as the large-scale load equipment, the cabin section structure, the storage box and the like. The whole structure has strong expansibility and can be adapted to various load interfaces and task demands.
Fourth, the height of the invention is low, under the condition of the same effective load, the height of the traditional frame plate type structure is higher and is generally more than 1m, and the height of the satellite cabin section connecting structure is not more than 450mm.
Fifth, compared with the frame plate type structure, the structure has no function of installing large heat consumption electronic equipment, can use composite materials with low thermal expansion coefficients, and is also suitable for the structural molding of the composite materials; on the other hand, the invention has lower side surface height, small area of the side surface facing the cold space and convenient integral precise temperature control. The dimensional stability of the invention is thus high. The temperature control precision of the invention is +/-5 ℃, the maximum transverse dimension is 4m, and the maximum thermal deformation is 1 multiplied by 10 -6 ×5×4＝2×10 -5 m=20 μm, only 1/24 of the thermal deformation of the conventional framed panel structure.
Drawings
FIG. 1 is a bottom view of a deck beam modular deck section connection structure;
FIG. 2 is a top view of a plate and shell beam modular deck connection structure;
FIG. 3 is a schematic view of a cartridge housing construction;
FIG. 4 is a schematic diagram of a force bearing frame structure;
fig. 5 is a schematic view of a variable cross-section end frame.
Detailed Description
The following detailed description refers to the accompanying drawings and specific examples.
1-2, a plate-shell-beam combined type large-bearing satellite cabin section connecting structure comprises a shell 1, a bearing frame 2, a variable-section end frame 3, a frame-shell connecting piece 4, a frame-shell connecting angle box 5 and a shell root connecting piece; wherein, the cylinder shell 1 is fixed on the variable cross-section end frame 3, and the bearing frame 2 passes through the cylinder shell 1 and is fixed on the variable cross-section end frame 3; the cartridge 1 and the bearing frame 2 are connected with a cartridge connecting piece 4 and a cartridge connecting corner box 5 through the frames; the cylinder shell 1 is connected with the variable cross-section end frame 3 through a cylinder shell root connecting piece, and a cylinder shell root heat insulation pad is arranged at the root of the cylinder shell 1; the shell 1 is provided with a connection interface 1011 with a propulsion service cabin, the bearing frame provides a mounting interface 2001 of large-scale load equipment and an interface 2002 of a load cabin section, and the variable cross-section end frame 3 can provide a mounting interface of small-scale equipment and a bracket.
In the concrete implementation, the assembly of the plate-shell-beam combined type large-bearing satellite cabin section connecting structure takes the lower end face of the shell 1 as an assembly reference, the shell 1 and the bearing frame 2 are connected in a gluing way through the frame and the shell connecting piece 4 and the frame and the shell connecting angle box 5 and are connected in a screwing way through connecting fasteners, the shell 1, the bearing frame 2 and the variable cross section end frame 3 are connected in a gluing way, and meanwhile, a shell root connecting piece is arranged between the shell 1 and the variable cross section end frame 3 and is connected. Longitudinal loads of large-scale load equipment and load cabin section structures are transmitted to the cylinder shell 1 through the bearing frame 2 and are diffused into uniform loads; the lateral load of the large load equipment, load deck structure is transferred downwards in two forms: one is the shear force, which is transmitted to the cartridge housing 1 mainly through the variable cross-section end frame 3; the other is that the bending moment is converted into local pulling pressure, and the pulling pressure is transmitted to the cartridge shell 1 through the bearing frame 2. The plate-shell beam assembly is combined, the loaded advantage of each structural member is exerted, and the structure has higher three-dimensional rigidity and strength.
As shown in fig. 3, cartridge 1 includes a lower cartridge flange 101, a cartridge post segment 102, and an upper cartridge flange 103, with upper cartridge flange 101 providing a connection interface 1011 with the propulsion service bay. The assembly of the cabin section connecting structure requires that the bearing frame 2 passes through the cartridge shell 1, and in order to meet the assembly connection requirement, deep grooves 1021 and wide grooves 1031 are formed in the positions where the cartridge shell column section 102, the cartridge shell upper flange 103 and the bearing frame are intersected. The main function of the shell is to assemble and integrate all main components of the cabin section connecting structure into a whole, and connect the main components with the propulsion service cabin to bear longitudinal, transverse and torsional loads.
As shown in fig. 4, the load-bearing frame includes 2 main beams 201, 2 secondary beams 202, and 2 auxiliary beams 203. The 2 main beams 201 are arranged in parallel, and the interval between the two main beams can be adjusted according to different load interfaces; the 2 secondary beams 202 and the 2 auxiliary beams 203 are arranged in parallel and are vertical to the 2 main beams 201, and the interval between the two secondary beams 202 and the 2 auxiliary beams 203 can be adjusted according to different load interfaces; the concentrated stress points of the bearing frame are the installation interface 2001 of the large-scale load equipment and the interface 2002 of the load cabin section, and the overall configuration adopts a 'well' -shaped configuration according to the requirements of the interfaces 2001 and 2002 when the configuration is designed. The girder adopts an I-shaped section; the main beam and the secondary beam are designed in an isosceles trapezoid, and the heights of the side surfaces of the main beam and the secondary beam and the auxiliary beam are lower; the 4 groups of mounting points 2001 of the large-scale load equipment are arranged at the intersecting position of the main beam 201 and the secondary beam 202, the local connection rigidity is good, and the other 4 groups of mounting points 2001 are arranged at the end part of the main beam; the interfaces 2002 of the load modules are partially arranged on the secondary beams 202, 203. In order to meet the assembly connection requirements, grooves 2003 are formed in the positions where the main beams 202 and the secondary beams 202 of the load-bearing frame intersect with the cartridge shell.
As shown in fig. 5, the variable cross-section end frame 3 includes an end face 301 and a reinforcing flange 302. The end face 301 is provided with a mounting interface 2001 of a large-scale load device and a screw connection avoidance hole 3001 of an interface 2002 of a load cabin section. Because the cabin section connecting structure is large in size, the radial rigidity of the cabin section connecting structure is weak, and the variable-section end frame can effectively improve the radial rigidity and torsional rigidity of the cabin section connecting structure and transfer effective load and transverse load of the load cabin section.
The invention designs a plate-shell-beam combined type large-bearing satellite cabin section connecting structure, which has the following characteristics:
firstly, the structural configuration is designed in a plate-shell beam form of a cylinder shell, a variable-section end frame and a bearing frame. The longitudinal load is transmitted to the cylinder shell through the bearing frame and is diffused into uniform load; lateral loads are transferred downward in two forms: one is the shear force, which is transmitted to the cartridge housing primarily through the variable cross-section end bells; the other is that the bending moment is converted into local pulling pressure, and the pulling pressure is transmitted to the cylinder shell through the bearing frame.
Secondly, a square-round transition structure form is provided, and the loading advantages of each structure of the plate, the shell and the beam are utilized to realize the resolution of the complex concentrated large load and the square cabin load into the uniform load of the end frame of the cylinder shell. The characteristics of strong pulling and pressing/bending/shearing load bearing capacity and uniform load of the whole structure of the bending beam in the bearing frame, the shearing plate in the variable-section end frame and the cylinder shell are brought into play.
Thirdly, the 2 main beams 201 of the bearing frame are arranged in parallel, the interval between the two main beams can be adjusted according to different load interfaces, the 2 secondary beams 202 and the 2 auxiliary beams 203 are arranged in parallel and are vertical to the 2 main beams 201, and the interval between the two main beams can be adjusted according to different load interfaces; besides the large-scale load equipment and cabin section structure, the shell structure can also be used as the installation interface of the large-scale load equipment, cabin section structure, storage tank and other structures. The structure expansibility is strong, and the structure can be adapted to various load interfaces and task demands.
Fourthly, the assembly requirement that the bearing frame passes through the cylinder shell during the assembly of the cabin section connecting structure is realized by arranging a deep groove on the cylinder section of the cylinder shell structure and arranging a wide groove on the upper flanging; the connection between the cylinder shell and the frame is realized efficiently through the connection piece between the frame and the cylinder shell and the connection angle box between the frame and the cylinder shell. The cartridge shell, the plate and the frame structural members are simpler in form, can be realized through structural assembly, and are high in manufacturing accessibility.
Fifth, the cabin connecting structure has large size, and when the problem of weak radial rigidity is faced, the radial rigidity and torsional rigidity of the cabin connecting structure can be effectively improved by adding the variable cross section end frame, and the effective load and the transverse load of the load cabin are transmitted.
Sixth, the composite material plate-shell beam cabin section connecting structure in the form of the ' cross ' -shaped ' main bearing frame structure has the structural external dimension reaching 3280mm multiplied by 2800mm multiplied by 450mm, and meets the requirements through mechanical analysis, thermal stability analysis and dimensional stability analysis of the spacecraft whole device under the condition of directly loading 2500kg of a large-sized camera.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (5)
1. The plate-shell-beam combined type large-bearing satellite cabin section connecting structure is characterized by comprising a shell, a bearing frame, a variable-section end frame, a frame and shell connecting piece, a frame and shell connecting angle box and a shell root connecting piece; the bearing frame penetrates through the cylinder shell and is fixed on the variable cross-section end frame; the cylinder shell and the bearing frame are connected with a cylinder shell connecting piece and a cylinder shell connecting corner box through the frame; the cylinder shell is connected with the variable cross-section end frame through a cylinder shell root connecting piece, and a cylinder shell root heat insulation pad is arranged at the cylinder shell root; the barrel shell is provided with a connection interface with the propulsion service cabin, the bearing frame provides an installation interface of large-scale load equipment and an interface of a load cabin section, and the variable cross-section end frame provides an installation interface of small-scale equipment and a bracket.
2. The plate-shell-beam combined type large-bearing satellite cabin section connecting structure according to claim 1, wherein the shell comprises a shell lower flange, a shell column section and a shell upper flange, and deep grooves and wide grooves are formed at the intersection positions of the shell column section, the shell upper flange and the bearing frame.
3. The plate-shell-beam combined type large-bearing satellite cabin section connecting structure according to claim 1, wherein the bearing frame comprises 2 main beams, 2 secondary beams and 2 auxiliary beams; the 2 main beams are arranged in parallel, and the interval between the two main beams can be adjusted according to different load interfaces; the 2 secondary beams and the 2 auxiliary beams are arranged in parallel and are vertical to the 2 main beams, and the interval between the two secondary beams and the 2 auxiliary beams can be adjusted according to different load interfaces; the girder adopts an I-shaped section; the main beam and the secondary beam are designed in an isosceles trapezoid, and the heights of the side surfaces of the main beam and the secondary beam and the auxiliary beam are lower.
4. A plate-shell-beam combined type large-bearing satellite cabin section connecting structure according to claim 3, wherein 4 groups of mounting points of the large-scale load equipment are arranged at the intersection position of the main beam and the secondary beam, and the other 4 groups of mounting points 2001 are arranged at the end part of the main beam; the interface part of the load cabin section is arranged on the secondary beam and the auxiliary beam.
5. The plate-shell-beam combined type large-bearing satellite cabin section connecting structure according to any one of claims 1 to 4, wherein the variable-section end frame comprises an end face and a reinforcing flanging, and screw connection avoidance holes of an installation interface of large-scale load equipment and an interface of a load cabin section are reserved on the end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211512062.1A CN116002073A (en) | 2022-11-29 | 2022-11-29 | Plate-shell-beam combined type large-bearing satellite cabin section connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211512062.1A CN116002073A (en) | 2022-11-29 | 2022-11-29 | Plate-shell-beam combined type large-bearing satellite cabin section connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116002073A true CN116002073A (en) | 2023-04-25 |
Family
ID=86025617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211512062.1A Pending CN116002073A (en) | 2022-11-29 | 2022-11-29 | Plate-shell-beam combined type large-bearing satellite cabin section connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116002073A (en) |
-
2022
- 2022-11-29 CN CN202211512062.1A patent/CN116002073A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100575191C (en) | A kind of main load-carrying structure of spacecraft | |
| CN109850186B (en) | Plate frame type satellite structure for one-rocket multi-satellite parallel transmission and assembly method | |
| CN111703592B (en) | Large commercial remote sensing satellite platform configuration and assembly method | |
| CN109484673A (en) | A kind of payload platform separate type remote sensing micro satellite configuration and its assembly method | |
| Bayati et al. | Optimized use of multi-outriggers system to stiffen tall buildings | |
| CN105667836B (en) | A kind of satellite pole structure | |
| CN107745829B (en) | Lightweight spacecraft main structure | |
| CN112319851A (en) | Large-scale boxboard formula communication cabin structure | |
| CN105277342A (en) | High-magnitude axial compression and binding joint load realization device | |
| CN210246650U (en) | Solar module floating system and structure thereof | |
| CN116002073A (en) | Plate-shell-beam combined type large-bearing satellite cabin section connecting structure | |
| CN210086491U (en) | Supporting device is strengthened in building jacking control | |
| CN111874558B (en) | High-rigidity light-weight composite material bracket and manufacturing method thereof | |
| CN113047170A (en) | Exposed simple steel pull beam cable-stayed bridge cable tower anchoring structure | |
| CN218758174U (en) | Fiber cement board wallboard connecting device | |
| CN220336097U (en) | Steel truss combined frame conjoined member | |
| CN219973777U (en) | Connecting structure of wallboard | |
| CN117401185B (en) | High-bearing-ratio micro-nano satellite structure suitable for large load and assembly mode thereof | |
| CN219993245U (en) | Assembled floor strutting arrangement | |
| CN211477827U (en) | Self-balancing drawing test system for power transmission tower node | |
| CN217602230U (en) | Concatenation formula container equipment room | |
| CN219931246U (en) | Plate girder connecting structure for assembling integral high-ductility concrete composite plate | |
| CN221057471U (en) | Bracket structure for fuel cell engine | |
| CN221030783U (en) | Assembled steel plate-dense rib concrete combined shear wall | |
| CN111846290B (en) | Carrier rocket and launching support tail section thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |