Assembly method of satellite high-precision magnetic suspension key cabin section

Abstract

The application provides a satellite high-precision magnetic suspension key cabin section assembly method, comprising the following installation methods: initial key cabin section assembly method: installing an I-shaped positioning block on a lower cabin plate, the I-shaped positioning block replaces a magnetic suspension mechanism to participate in assembly, installing an upper cabin plate on the I-shaped positioning block, positioning and installing an L-shaped positioning block between the lower cabin plate and the upper cabin plate, and installing a pyrotechnic device simulation piece between the lower cabin plate and the upper cabin plate; removing the pyrotechnic device simulation piece, the I-shaped positioning block and the L-shaped positioning block; formal assembly method: resetting and installing the L-shaped positioning block on the lower cabin plate, and tightly installing the upper cabin plate with the L-shaped positioning block. When the L-shaped positioning block is reset and installed during formal assembly, the cabin precision requirement can be met, when the key cabin section needs to be repeatedly disassembled and assembled, the method can be used to make the reset precision meet the requirement, ensure the cabin plate repeated disassembly and assembly precision, guarantee the ground verification test condition, and ensure the realization of the key cabin section function on the ground.

Description

Technical Field

[0001] This invention relates to satellite assembly methods, specifically to an assembly method for a key high-precision magnetic levitation module of a satellite. Background Technology

[0002] Traditional satellite structural designs mostly employ rigid connections between structural plates and trusses. However, as satellite payloads place increasingly stringent demands on their installation environment, traditional structural forms are no longer adequate. Therefore, a key technology module has emerged that uses a magnetic levitation mechanism to achieve dynamic and static isolation between the upper and lower modules to meet the payload installation environment requirements. This type of key module requires extremely high installation precision during ground testing, and to complete relevant ground testing projects, it needs to be disassembled and reassembled multiple times, ensuring that the precision requirements are met after each disassembly and reassembly.

[0003] A Chinese patent application with publication number CN107792393B discloses a master-slave non-contact embedded satellite ground verification system and its verification method. The system includes a payload compartment and a platform compartment that are dynamically and statically isolated by a non-contact magnetic levitation mechanism. A dual three-degree-of-freedom air levitation system is constructed. The active air levitation systems of the payload compartment and the platform compartment are similar and are independently formed by the payload compartment and the platform compartment, forming a dual three-degree-of-freedom air levitation system. Each active air levitation is equipped with a gas cylinder, a control valve, and a planar bearing. The compartment is levitated by the air film formed between the compressed gas and the bearing seat, thereby achieving a near-frictionless relative motion condition to simulate the mechanical environment in outer space where the disturbance torque on the compartment is very small. The platform compartment is levitated by four planar air feet. The payload compartment and the platform compartment can achieve translation in the X and Y directions by air levitation through their respective air feet. The payload compartment can achieve small-angle rotation in the Z direction through the magnetic levitation mechanism, realizing dual three-degree-of-freedom motion.

[0004] The existing installation methods cannot guarantee the accuracy of repeated disassembly and assembly of key sections during multiple disassembly and assembly processes, and there are areas for improvement. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a method for assembling key modules of a high-precision magnetic levitation satellite.

[0006] According to the present invention, a method for assembling a key section of a high-precision maglev satellite includes the following installation methods: Initial key section assembly method: an I-beam positioning block is installed on the lower panel, the I-beam positioning block replacing the maglev mechanism in the assembly; the upper panel is installed on the I-beam positioning block; an L-shaped positioning block is positioned and installed between the lower and upper panels; a pyrotechnic device simulator is installed between the lower and upper panels; the pyrotechnic device simulator, the I-beam positioning block, and the L-shaped positioning block are removed; Formal assembly method: the L-shaped positioning block is reinstalled on the lower panel; the upper panel is securely installed to the L-shaped positioning block.

[0007] Preferably, the mounting surface of the magnetic levitation mechanism on the lower deck is determined as the mounting reference surface. I-beam positioning blocks are installed on the mounting reference surface using fasteners. The I-beam positioning blocks replace the magnetic levitation mechanism in the final assembly. The upper deck is placed on the I-beam positioning blocks. The gap between each I-beam positioning block and the upper deck is measured. Fine adjustments are made to make the I-beam positioning blocks and the upper deck fit together. After the fine adjustments make the parallelism and symmetry of the lower deck and the upper deck meet the required values, the I-beam positioning blocks and the upper deck are fastened together using fasteners.

[0008] Preferably, the number of magnetic levitation mechanisms is determined according to the required magnetic levitation force between the magnetic levitation modules, and they are arranged symmetrically and evenly between the two modules.

[0009] Preferably, the interface and precision of the I-beam positioning block and the magnetic levitation mechanism are consistent, and the layout and quantity of the I-beam positioning block are consistent with the installation layout and quantity of the magnetic levitation mechanism. After the precision is adjusted in place, the I-beam positioning block is replaced with the magnetic levitation mechanism.

[0010] Preferably, the gap between the mounting surface of the I-beam positioning block and the mounting surface of the upper compartment plate is less than 0.02 mm.

[0011] Preferably, a coordinate measuring machine is used to measure the parallelism and symmetry between the lower deck plate D and the upper deck plate E. The parallelism is adjusted by pasting copper foil of appropriate thickness on the mounting surface of the I-beam positioning block of the upper deck plate or by scraping the mounting surface of the magnetic levitation mechanism of the upper deck plate.

[0012] Preferably, the lower compartment mounting surface of the L-shaped positioning block is attached to the lower compartment plate, and the upper compartment mounting surface of the L-shaped positioning block is attached to the upper compartment plate. Fasteners are used to connect and secure the L-shaped positioning block to the lower compartment plate. The adjustable patch is slid until it is attached to the lower surface of the upper compartment plate. After completion, fasteners are used to connect and secure the adjustable patch to the L-shaped positioning block through the mounting hole of the adjustable patch. The reset pin hole on the L-shaped positioning block is matched with the pin hole of the lower compartment plate.

[0013] Preferably, the interfaces and precision of the pyrotechnic device simulator and the pyrotechnic device are consistent, and the pyrotechnic device maintains a fixed connection between the two compartments during launch, and is symmetrically arranged around and in the middle of the upper compartment plate.

[0014] Preferably, the formal installation method is as follows: Install an L-shaped positioning block on the lower compartment plate. The L-shaped positioning block is reset and installed using a reset pin hole. Place the upper compartment plate on the L-shaped positioning block so that the adjustable patch contact surface is in contact with the lower surface of the upper compartment plate and the side of the upper compartment plate is in contact with the upper compartment mounting surface of the L-shaped positioning block. Use fasteners to connect and secure the L-shaped positioning block to the upper compartment plate through the upper compartment mounting hole of the L-shaped positioning block.

[0015] Preferably, the upper compartment mounting hole of the L-shaped positioning block is designed as an oblong hole to adjust the inter-compartment spacing, and the side of the upper compartment plate is kept in contact with the upper compartment mounting surface of the L-shaped positioning block during the adjustment process.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention achieves the required inter-compartment accuracy by initially assembling the I-shaped positioning block, the L-shaped positioning block, and the pyrotechnic device simulation component, and then resetting and installing the L-shaped positioning block during formal assembly. When critical compartments require repeated disassembly and assembly, this method can be used to ensure the required resetting accuracy, guarantee the accuracy of repeated disassembly and assembly of the compartment panels, ensure the conditions for ground verification tests, and ensure the realization of the functions of critical compartments on the ground.

[0018] 2. By designing the upper compartment mounting hole of the L-shaped positioning block as an oblong hole for adjusting the inter-compartment spacing, this invention helps to improve the applicability of the final assembly method and can meet the installation requirements of key compartments under multiple test conditions. Attached Figure Description

[0019] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is an exploded view of the overall assembly structure of the key compartments, which is the main feature of this invention.

[0021] Figure 2 This is a schematic diagram illustrating the overall assembly structure of the key sections of the present invention.

[0022] Figure 3 This is a schematic diagram illustrating the overall structure of the I-beam positioning block, which is the main feature of this invention.

[0023] Figure 4 This is a schematic diagram illustrating the overall structure of the L-shaped positioning block, which is the main feature of this invention.

[0024] Figure 5 This is a schematic diagram illustrating the overall structure of the pyrotechnic device simulator of this invention.

[0025] The figure shows: 1. Lower hatch plate; 2. Upper hatch plate; 3. I-beam positioning block; 4. L-shaped positioning block; 5. Pyrotechnic device simulation component. Detailed Implementation

[0026] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0027] like Figure 1 and Figure 2 As shown, the assembly method for a key section of a high-precision maglev satellite according to the present invention includes the following installation method:

[0028] Initial assembly method for key modules: Install I-beam positioning blocks 3 on the lower module 1. I-beam positioning blocks 3 replace the maglev mechanism in the final assembly. Install the upper module 2 on the I-beam positioning blocks 3. Position and install the L-shaped positioning block 4 between the lower module 1 and the upper module 2. Install the pyrotechnic device simulation component 5 between the lower module 1 and the upper module 2. Remove the pyrotechnic device simulation component 5, I-beam positioning blocks 3, and L-shaped positioning blocks 4. Formal assembly method: Reinstall the L-shaped positioning blocks 4 on the lower module 1. Securely install the upper module 2 to the L-shaped positioning blocks 4. It should be noted that the satellite high-precision maglev key module consists of an upper module 2 and a lower module 1. The upper module 2 and lower module 1 of the satellite high-precision maglev key module are connected by the maglev mechanism installed within them.

[0029] Specifically, regarding the installation of the I-beam positioning block 3: The mounting surface of the maglev mechanism on the lower deck 1 is determined as the installation reference surface. The I-beam positioning block 3 is installed on this reference surface using fasteners. The I-beam positioning block 3 replaces the maglev mechanism in the final assembly. The upper deck 2 is placed on the I-beam positioning block 3. The gap between each I-beam positioning block 3 and the upper deck 2 is measured. Fine-tuning is performed to ensure the I-beam positioning block 3 and the upper deck 2 are in close contact. After fine-tuning to ensure the parallelism and symmetry of the lower deck 1 and the upper deck 2 meet the requirements, the I-beam positioning block 3 and the upper deck 2 are securely connected using fasteners. The number of maglev mechanisms is determined based on the required maglev force between the maglev sections, and they are symmetrically and evenly distributed between the two decks. The interface and precision of the I-beam positioning block 3 and the maglev mechanism are consistent. The layout and number of the I-beam positioning block 3 are consistent with the installation layout and number of the maglev mechanism. After subsequent precision adjustments, the I-beam positioning block 3 is replaced with the maglev mechanism. The gap between the mounting surface of the I-beam positioning block 3 and the mounting surface of the upper deck plate 2 is less than 0.02mm. The parallelism and symmetry between the lower deck plate 1D and the upper deck plate 2E are measured using a coordinate measuring machine. The parallelism is adjusted by attaching copper foil of appropriate thickness to the mounting surface of the I-beam positioning block 3 on the upper deck plate 2 or by scraping the mounting surface of the magnetic levitation mechanism on the upper deck plate 2.

[0030] like Figure 3 As shown, it should be noted that the overall shape of the I-beam positioning block 3 is I-shaped. The mounting surface of the I-beam positioning block 3 with the lower hatch plate 1 is the bottom surface of the I-beam positioning block 3, and the mounting surface of the I-beam positioning block 3 with the upper hatch plate 2 is the top surface of the I-beam positioning block 3.

[0031] More specifically, the installation reference is first determined. Generally, the installation surface of the maglev mechanism on the lower deck 1 is used as the installation reference. The maglev mechanism is installed between the two decks to play the role of inter-deck maglev. Its number is determined according to the required maglev force between the maglev sections. It is symmetrically and evenly distributed between the two decks. I-beam positioning blocks 3 are installed on the installation surface of the maglev mechanism on the lower deck 1. The interface and precision of the I-beam positioning blocks 3 and the maglev mechanism are consistent. The height of the I-beam positioning blocks 3 is obtained by machining according to the required height between the decks. It replaces the maglev mechanism in the final assembly. The lower deck installation surface of the I-beam positioning blocks 3 is attached to the installation surface of the lower deck 1 and fastened with four sets of lower deck installation screw holes. The layout and number of the I-beam positioning blocks 3 are consistent with the installation layout and number of the maglev mechanism. After the subsequent precision adjustment is in place, the I-beam positioning blocks 3 are replaced with the maglev mechanism. Place the upper deck 2 naturally on the mounting surface of the I-beam positioning block 3. Use a feeler gauge to measure the gap between the mounting surface of each I-beam positioning block 3 and the mounting surface of the upper deck 2. Continue this process by either attaching copper foil of appropriate thickness to the mounting surface of the I-beam positioning block 3 or by scraping the mounting surface of the magnetic levitation mechanism on the upper deck 2 until all mounting surfaces of the I-beam positioning blocks 3 are in contact with the mounting surface of the upper deck 2, ensuring a gap of less than 0.02mm. Use a coordinate measuring machine to measure the parallelism and symmetry between the lower deck 1 and the upper deck 2. Adjust the parallelism in the same way by attaching copper foil of appropriate thickness to the mounting surface of the I-beam positioning block 3 or by scraping the mounting surface of the magnetic levitation mechanism on the upper deck 2. After fine-tuning to the required values, use fasteners to connect and secure the I-beam positioning blocks to the mounting surface of the upper deck 2 through the four sets of upper deck mounting screw holes on the I-beam positioning blocks 3.

[0032] like Figure 2 As shown, regarding the installation of the L-shaped positioning block 4, the lower compartment mounting surface of the L-shaped positioning block 4 is attached to the lower compartment plate 1, and the upper compartment mounting surface of the L-shaped positioning block 4 is attached to the upper compartment plate 2. Fasteners are used to connect and secure the L-shaped positioning block 4 to the lower compartment plate 1. The adjustable patch is slid until it is attached to the lower surface of the upper compartment plate 2. After completion, fasteners are used to connect and secure the adjustable patch to the L-shaped positioning block 4 through the adjustable patch mounting hole. The reset pin hole on the L-shaped positioning block 4 is used to match the pin hole with the lower compartment plate 1.

[0033] like Figure 4 As shown, it should be noted that the L-shaped positioning block 4 is L-shaped in overall shape. The upper cabin mounting surface of the L-shaped positioning block 4 is the bottom surface of the L-shaped positioning block 4, and the upper cabin mounting surface of the L-shaped positioning block 4 is the upper side surface of the L-shaped positioning block 4. The adjustable patch is set on the side where the L-shaped positioning block 4 is installed with the upper cabin plate 2, and the adjustable patch is adjustable along the height direction of the L-shaped positioning block 4.

[0034] More specifically, the L-shaped positioning block 4 is installed in the middle of the key compartment. The lower compartment mounting surface of the L-shaped positioning block 4 is aligned with the lower compartment plate 1. The upper compartment mounting surface of the L-shaped positioning block 4 is gently pushed to align with the upper compartment plate 2. Fasteners are used to connect and secure the L-shaped positioning block 4 to the lower compartment plate 1 through the lower compartment mounting hole. The adjustable patch is slid until it aligns with the lower surface of the upper compartment plate 2. After completion, fasteners are used to connect and secure the adjustable patch to the L-shaped positioning block 4 through the adjustable patch mounting hole. The reset pin hole on the L-shaped positioning block 4 is then matched with the lower compartment plate 1.

[0035] like Figure 1 and Figure 5 As shown, regarding the installation of the pyrotechnic device, the interface and precision of the pyrotechnic device simulator 5 and the pyrotechnic device are consistent. The pyrotechnic device maintains a fixed connection between the two compartments during launch and is symmetrically arranged around and in the middle of the upper compartment plate 2.

[0036] More specifically, the pyrotechnic device simulator 5 is installed between the lower compartment plate 1 and the upper compartment plate 2. The interface and precision of the pyrotechnic device simulator 5 and the pyrotechnic device are consistent. The pyrotechnic device maintains a fixed connection between the two compartments during launch. It is generally symmetrically arranged around and in the middle of the upper compartment plate 2 for easy operation. When there is an interface mismatch between the pyrotechnic device simulator 5 and the lower compartment plate 1 and the upper compartment plate 2, it is completed by scraping the mounting surfaces of the lower compartment plate 1 and the upper compartment plate 2, so as to facilitate the one-time assembly during the subsequent formal installation of the pyrotechnic device.

[0037] After the three sets of auxiliary assembly tooling are completed, remove the pyrotechnic device simulation part 5, the I-beam positioning block 3, and the L-shaped positioning block 4.

[0038] Regarding the formal installation method: Install the L-shaped positioning block 4 on the lower compartment plate 1. Use the reset pin hole to reset the L-shaped positioning block 4. Place the upper compartment plate 2 on the L-shaped positioning block 4, so that the adjustable patch contact surface is in contact with the lower surface of the upper compartment plate 2, and the side of the upper compartment plate 2 is in contact with the upper compartment mounting surface of the L-shaped positioning block 4. Use fasteners to connect and secure the L-shaped positioning block 4 to the upper compartment plate 2 through the upper compartment mounting hole of the L-shaped positioning block 4.

[0039] More specifically, simply install an L-shaped positioning block 4 on the lower compartment plate 1. The L-shaped positioning block 4 is reset using the reset pin hole. Place the upper compartment plate 2 on the L-shaped positioning block 4, ensuring that the adjustable patch's contact surface is tightly against the lower surface of the upper compartment plate 2 and the side of the upper compartment plate 2 is tightly against the upper compartment mounting surface of the L-shaped positioning block 4. Use fasteners to connect and secure the L-shaped positioning block 4 to the upper compartment plate 2 through the upper compartment mounting hole of the L-shaped positioning block 4. This will meet the inter-compartment accuracy requirements. When critical compartments need to be repeatedly disassembled and reassembled, this method can be used to ensure that the reset accuracy meets the requirements.

[0040] Furthermore, the upper compartment mounting hole of the L-shaped positioning block 4 is designed as an oblong hole for adjusting the inter-compartment spacing. During the adjustment process, the side of the upper compartment plate 2 is kept in contact with the upper compartment mounting surface of the L-shaped positioning block 4. Specifically, when the inter-compartment spacing needs to be adjusted due to test conditions, the oblong hole design of the upper compartment mounting hole of the L-shaped positioning block 4 can generally be used for adjustment. During the adjustment process, the side of the upper compartment plate 2 is kept in contact with the upper compartment mounting surface of the L-shaped positioning block 4 until the desired position is achieved.

[0041] This application completes the adaptation of the final assembly auxiliary assembly tooling to the key modules during the initial assembly of key modules. In the subsequent final assembly process, the final assembly auxiliary tooling is used to complete the assembly of the key modules in the test state, which can ensure the assembly accuracy between modules. Furthermore, depending on the test conditions, the use of the final assembly auxiliary tooling can meet the test conditions required under various test conditions and ensure the accuracy of repeated disassembly and assembly.

[0042] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A method for assembling a key section of a high-precision maglev satellite, characterized in that, The following installation methods are included: Initial assembly method for key sections: Install I-beam positioning blocks (3) on the lower compartment plate (1). The I-beam positioning blocks (3) replace the magnetic levitation mechanism in the final assembly. Install the upper compartment plate (2) on the I-beam positioning blocks (3). Position and install the L-shaped positioning blocks (4) between the lower compartment plate (1) and the upper compartment plate (2). Install the pyrotechnic device simulation parts (5) between the lower compartment plate (1) and the upper compartment plate (2). Remove the pyrotechnic device simulation component (5), the I-beam positioning block (3), and the L-shaped positioning block (4); Formal assembly method: Reset and install the L-shaped positioning block (4) on the lower compartment plate (1), and fasten the upper compartment plate (2) to the L-shaped positioning block (4); The mounting surface of the magnetic levitation mechanism on the lower cabin plate (1) is determined as the mounting reference surface. The I-beam positioning block (3) is installed on the mounting reference surface by fasteners. The I-beam positioning block (3) replaces the magnetic levitation mechanism in the final assembly. The upper cabin plate (2) is placed on the I-beam positioning block (3). The gap between each I-beam positioning block (3) and the upper cabin plate (2) is measured. The I-beam positioning block (3) and the upper cabin plate (2) are finely adjusted to fit together. After the parallelism and symmetry of the lower cabin plate (1) and the upper cabin plate (2) meet the requirements, the I-beam positioning block (3) and the upper cabin plate (2) are fastened together with fasteners. Fit the lower compartment mounting surface of the L-shaped positioning block (4) with the lower compartment plate (1), and fit the upper compartment mounting surface of the L-shaped positioning block (4) with the upper compartment plate (2). Use fasteners to connect and secure the L-shaped positioning block (4) to the lower compartment plate (1). Slide the adjustable patch until the patch is fitted with the lower surface of the upper compartment plate (2). After completion, use fasteners to connect and secure the adjustable patch to the L-shaped positioning block (4) through the adjustable patch mounting hole. Use the reset pin hole on the L-shaped positioning block (4) to match the pin hole with the lower compartment plate (1). Formal installation method: Install L-shaped positioning block (4) on the lower compartment plate (1). Use the reset pin hole to reset the L-shaped positioning block (4). Place the upper compartment plate (2) on the L-shaped positioning block (4) so ​​that the adjustable patch contact surface is in contact with the lower surface of the upper compartment plate (2) and the side of the upper compartment plate (2) is in contact with the upper compartment mounting surface of the L-shaped positioning block (4). Use fasteners to connect and tighten the L-shaped positioning block (4) and the upper compartment plate (2) through the upper compartment mounting hole of the L-shaped positioning block (4).

2. The assembly method for the key modules of a high-precision maglev satellite as described in claim 1, characterized in that, The number of maglev mechanisms is determined based on the required maglev force between the maglev cabins, and they are arranged symmetrically and evenly between the two cabins.

3. The assembly method for the key modules of a high-precision maglev satellite as described in claim 2, characterized in that, The interface and precision of the I-beam positioning block (3) and the magnetic levitation mechanism are consistent. The layout and quantity of the I-beam positioning block (3) are consistent with the installation layout and quantity of the magnetic levitation mechanism. After the subsequent precision adjustment is in place, the I-beam positioning block (3) will be replaced with the magnetic levitation mechanism.

4. The assembly method for the key modules of a high-precision maglev satellite as described in claim 1, characterized in that, The gap between the mounting surface of the I-beam positioning block (3) and the mounting surface of the upper cabin plate (2) is less than 0.02mm.

5. The assembly method for the key module of high-precision maglev satellite as described in claim 1, characterized in that, The parallelism and symmetry between the lower deck plate (1) and the upper deck plate (2) are measured using a coordinate measuring machine. The parallelism is adjusted by pasting copper foil of the appropriate thickness on the mounting surface of the I-beam positioning block (3) of the upper deck plate (2) or by scraping the mounting surface of the magnetic levitation mechanism of the upper deck plate (2).

6. The assembly method for the key module of high-precision maglev satellite as described in claim 1, characterized in that, The interface and precision of the pyrotechnic device simulator (5) and the pyrotechnic device are consistent. The pyrotechnic device maintains a fixed connection between the two compartments during the launch process and is symmetrically arranged around and in the middle of the upper compartment plate (2).

7. The assembly method for the key modules of a high-precision maglev satellite as described in claim 1, characterized in that, The upper cabin mounting hole of the L-shaped positioning block (4) is designed as an oblong hole, which is used to adjust the inter-cabin spacing. During the adjustment process, the side of the upper cabin plate (2) and the upper cabin mounting surface of the L-shaped positioning block (4) are kept in contact.

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