Satellite reaction flywheel thermal vacuum test tool

Abstract

The utility model relates to a thermal vacuum test tool for a satellite reaction flywheel, which relates to the technical field of thermal vacuum tests for satellite reaction flywheels and comprises a bottom plate, a fixed column, a top flat plate and a copper column heat-conducting support frame. The bottom plate is rectangular, two parallel sliding rails are arranged on the bottom plate, and the four fixing columns are connected to the lower surface of the bottom plate; the two top flat plates are arranged right above the bottom plate, the top flat plates are rectangular, the two copper column heat conduction supporting frames are connected to the two side edge openings of the lower portions of the top flat plates, and the other ends of the copper column heat conduction supporting frames are slidably connected into the sliding rails. The reaction flywheel thermal vacuum test tool has the advantages that the technical problems that an existing reaction flywheel thermal vacuum test tool is complex in structure, tedious in installation, limited in test capacity, low in space utilization rate, poor in universality and insufficient in heat conduction performance, and the test precision is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of satellite reaction flywheel thermal vacuum testing technology, and in particular to a satellite reaction flywheel thermal vacuum testing fixture. Background Technology

[0002] Satellites need to operate in orbit in extreme space environments. As a core actuator in the satellite's attitude control system, the reaction flywheel undergoes ground-based thermal vacuum testing, a crucial step in ensuring its long-term stable operation in orbit. This testing effectively identifies and resolves potential environmental adaptability issues, improves the flywheel's reliability and lifespan, and thus guarantees the successful execution of satellite missions.

[0003] Existing reaction flywheel thermal vacuum testing fixtures are too heavy and complex, often using a fixed installation method, making component disassembly and installation difficult; the single-layer structure often results in only a limited number of test products being able to be accommodated per test, leading to low efficiency per test, underutilization of the internal space, and increased costs; each fixture is only suitable for a specific model of reaction flywheel, which is not conducive to universal testing; some fixtures have poor thermal conductivity, which may lead to uneven heating of the flywheel, failing to reach the ideal temperature for space testing and thus failing to achieve accurate testing results.

[0004] In summary, the existing reaction flywheel thermal vacuum testing fixture has a complex structure, is cumbersome to install and disassemble, has a single-layer design that limits the test capacity, has low space utilization, high cost, poor versatility, and insufficient thermal conductivity, which affects the test accuracy.

[0005] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0006] The purpose of this utility model is to provide a satellite reaction flywheel thermal vacuum test fixture, which solves the technical problems of existing reaction flywheel thermal vacuum test fixtures, such as complex structure, cumbersome installation, limited test capacity, low space utilization, poor versatility, and insufficient thermal conductivity, which affect the test accuracy.

[0007] This utility model provides a thermal vacuum test fixture for a satellite reaction flywheel, comprising a base plate, fixed columns, a top plate, and copper column thermal conductive support frames. The base plate is rectangular, with two parallel slide rails on its upper surface and four fixed columns connected to its lower surface. Two rectangular top plates are positioned directly above the base plate, with two copper column thermal conductive support frames connected to both sides of the lower surface of each top plate. The other end of each copper column thermal conductive support frame is slidably connected to the slide rails.

[0008] Using the above technical solution, two parallel slide rails are used to slide the top plate into the vacuum tank after it is installed at the opening, ensuring smooth movement of the top plate and providing stable guidance and alignment. This prevents the copper column heat-conducting support frame from hitting the flywheel below and causing external damage to the flywheel during manual movement. The four fixing columns under the base plate are fixed to the bottom bracket of the vacuum tank with hexagonal bolts. Two top plates are set directly above the base plate. After the product is installed on one of the top plates at the opening, it slides into the vacuum tank to a predetermined position via the slide rail. Then, the other top plate is placed on the track at the opening for product installation. This effectively avoids manual entry into the tank to adjust the product's position and improves installation efficiency.

[0009] Furthermore, the top plate is provided with multiple square perforations, which are located at the respective positions where each flywheel is installed.

[0010] By adopting the above technical solution, the square hollow holes are set at each flywheel mounting position, thereby reducing the weight of the tooling and effectively conducting heat.

[0011] Furthermore, a black anodized aluminum coating is provided on the surface of the base plate.

[0012] Furthermore, the base plate is provided with multiple sets of mounting holes.

[0013] Using the above technical solution, multiple sets of mounting holes are used to install flywheels of different models.

[0014] Furthermore, nine square perforations are provided on the top plate.

[0015] This utility model of satellite reaction flywheel thermal vacuum testing fixture solves the problems of complexity and space limitation in existing fixture technologies. It adopts an optimized double-layer structure and slide rail design, making installation more convenient and increasing test capacity and space utilization. The copper column thermally conductive support frame improves heat conduction efficiency and reduces the impact of thermal expansion, thereby improving test accuracy. The two top plates directly above the base plate have a modular and detachable design, facilitating field testing and avoiding manual entry into the tank for adjustments, thus improving safety and installation efficiency. Furthermore, the slide rail guide ensures smooth movement of the top plates, and the fixing columns under the base plate are secured with hexagonal bolts, enhancing structural stability and effectively reducing the risk of flywheel damage. Overall, the fixture enhances stability, safety, and versatility. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the satellite reaction flywheel thermal vacuum test fixture provided in this embodiment of the utility model.

[0017] Figure 2 for Figure 1A schematic diagram of the base plate of the thermal vacuum test fixture for the reaction flywheel of the satellite.

[0018] Figure 3 for Figure 1 Another perspective structural diagram of the base plate of the satellite reaction flywheel thermal vacuum test fixture.

[0019] Figure 4 for Figure 1 A schematic diagram of the structure combining the top plate and the copper column thermal conductive support frame of the reaction flywheel thermal vacuum test fixture for China Satellite.

[0020] Figure 5 for Figure 1 Another perspective structural diagram of the combination of the top plate and copper column thermal conductive support frame of the reaction flywheel thermal vacuum test fixture for China Satellite.

[0021] Figure 6 for Figure 1 Another structural schematic diagram of the thermal vacuum test fixture for the reaction flywheel of the satellite.

[0022] The reference numerals and components involved in the accompanying drawings are shown below:

[0023] 1. Base plate

[0024] 11. Slide rail

[0025] 12. Mounting holes

[0026] 2. Fixed column

[0027] 3. Top flat panel

[0028] 31. Square hollow hole

[0029] 4. Copper column heat-conducting support frame Detailed Implementation

[0030] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0031] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0032] Example 1

[0033] Figure 1 This is a schematic diagram of the structure of the satellite reaction flywheel thermal vacuum test fixture provided in an embodiment of the present invention. Figure 2 for Figure 1 A schematic diagram of the base plate of the thermal vacuum test fixture for the reaction flywheel of China Satellite. Figure 3 for Figure 1 Another perspective structural diagram of the base plate of the satellite reaction flywheel thermal vacuum test fixture. Figure 4 for Figure 1 A schematic diagram of the structure combining the top plate and the copper column thermally conductive support frame of the reaction flywheel thermal vacuum test fixture for China Satellite. Figure 5 for Figure 1 Another perspective view of the structural diagram of the combination of the top plate and copper column thermally conductive support frame of the reaction flywheel thermal vacuum test fixture for China Satellite. Figure 6 for Figure 1 Another structural schematic diagram of the thermal vacuum test fixture for the reaction flywheel of the satellite. Please refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The satellite reaction flywheel thermal vacuum test fixture provided in this embodiment includes a base plate 1, fixed columns 2, a top plate 3, and copper column thermal conductive support frames 4. The base plate 1 is rectangular, and two parallel slide rails 11 are provided on the top of the base plate 1. Four fixed columns 2 are connected to the bottom of the base plate 1. Two top plates 3 are provided directly above the base plate 1. The top plates 3 are rectangular, and two copper column thermal conductive support frames 4 are connected to the two sides below the bottom of the top plates 3. The other end of the copper column thermal conductive support frame 4 is slidably connected to the slide rails 11.

[0034] It should be noted that the two parallel slide rails 11 are used to slide the top plate 3 into the vacuum tank after it is installed at the vacuum tank opening, ensuring the smooth movement of the top plate 3, while providing stable guidance and alignment functions, and preventing the copper column heat conduction support frame 4 from hitting the flywheel below and causing external damage to the flywheel when manually moved; the four fixing columns 2 under the bottom plate 1 are fixed to the bottom bracket of the vacuum tank by hexagonal bolts.

[0035] Two top plates 3 are provided directly above the base plate 1. After the product is installed on one of the top plates 3 at the can opening, it slides into the vacuum can at a predetermined position through the slide rail 11. Then, the other top plate 3 is placed on the can opening track for product installation. This effectively avoids the need for manual entry into the can to adjust the position of the product and improves installation efficiency.

[0036] This utility model of satellite reaction flywheel thermal vacuum testing fixture solves the problems of complexity and space limitation in existing fixture technologies. The optimized double-layer structure and slide rail 11 design make installation more convenient, increasing test capacity and space utilization. The copper column thermally conductive support frame 4 improves heat conduction efficiency and reduces the impact of thermal expansion, thereby improving test accuracy. The two top plates 3 directly above the base plate 1 have a modular and detachable design, facilitating field testing and avoiding manual entry into the tank for adjustments, thus improving safety and installation efficiency. Furthermore, the slide rail 11 guides and ensures smooth movement of the top plates 3, and the fixing columns 2 under the base plate 1 are secured with hexagonal bolts, enhancing structural stability and effectively reducing the risk of flywheel damage. Overall, the fixture enhances stability, safety, and versatility.

[0037] Further reference Figure 4 , Figure 5 The present invention provides a plurality of square hollow holes 31 on the top plate 3, and the square hollow holes 31 are respectively located at the position where each flywheel is installed; specifically, there are 9 square hollow holes 31 on the top plate 3.

[0038] It should be noted that the square perforated holes 31 are located at each flywheel mounting position, thereby reducing the weight of the tooling and effectively conducting heat.

[0039] Furthermore, the present invention provides a layer of black anodized aluminum coating on the surface of the base plate 1.

[0040] It should be noted that the black anodized aluminum coating enhances heat absorption capacity.

[0041] Further reference Figure 2 , Figure 3 The present invention has multiple sets of mounting holes 12 on the base plate 1.

[0042] It should be noted that the multiple sets of mounting holes 12 are used to install different models of flywheels.

[0043] As can be seen from the above description, the advantages of this utility model are:

[0044] This utility model of satellite reaction flywheel thermal vacuum testing fixture solves the problems of complexity and space limitation in existing fixture technologies. The optimized double-layer structure and slide rail 11 design make installation more convenient, increasing test capacity and space utilization. The copper column thermally conductive support frame 4 improves heat conduction efficiency and reduces the impact of thermal expansion, thereby improving test accuracy. The two top plates 3 directly above the base plate 1 have a modular and detachable design, facilitating field testing and avoiding manual entry into the tank for adjustments, thus improving safety and installation efficiency. Furthermore, the slide rail 11 guides and ensures smooth movement of the top plates 3, and the fixing columns 2 under the base plate 1 are secured with hexagonal bolts, enhancing structural stability and effectively reducing the risk of flywheel damage. Overall, the fixture enhances stability, safety, and versatility.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A satellite reaction flywheel hot vacuum test fixture, characterized by, It comprises a bottom plate (1), a fixed column (2), a top flat plate (3) and a copper column heat conduction support frame (4); The bottom plate (1) is rectangular, two parallel slide rails (11) are arranged on the upper surface of the bottom plate (1), and four fixed columns (2) are connected to the lower surface of the bottom plate (1); Two top flat plates (3) are arranged above the bottom plate (1), the top flat plates (3) are rectangular, two copper column heat conduction support frames (4) are connected to the lower surface of each side edge of the top flat plates (3), and the other end of the copper column heat conduction support frame (4) is slidably connected to the slide rail (11).

2. The satellite flywheel vacuum bakeout test fixture of claim 1, wherein, A plurality of square hollow holes (31) are arranged on the top flat plate (3), and the square hollow holes (31) are arranged at positions corresponding to the positions of the flywheels.

3. The satellite flywheel vacuum bakeout test fixture of claim 1, wherein, A layer of black anodized aluminum coating is arranged on the surface of the bottom plate (1).

4. The satellite flywheel vacuum bake-out test fixture of claim 1, wherein, A plurality of mounting holes (12) are arranged on the bottom plate (1).

5. The satellite flywheel vacuum bake-out test fixture of claim 1, wherein, Nine square hollow holes (31) are arranged on the top flat plate (3).

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