Air floatation gravity removing device

Abstract

The utility model discloses an air floatation gravity removing device which comprises a simulation wall, an air floatation platform and an air floatation system, and the simulation wall is used for installing a test piece to be unfolded. The air floatation system comprises a control cabinet, an air pipe assembly and a plurality of air cushion assemblies; the plurality of air cushion assemblies are used for respectively mounting each unfolding page in the test piece to be unfolded. The air cushion assembly is placed on the air floating platform. The air cushion assembly comprises a plurality of air feet, two air foot supports, two supporting parts and an adapter support. The first ends of the two air foot supports are connected with each other, and the connecting positions of the second ends of the two air foot supports and the first ends of the two air foot supports are of a triangular structure and envelop the gravity center range of the corresponding unfolding page. The air foot is arranged at the bottom of the air foot support, and the control cabinet is used for providing compressed air for the air foot so that an air film can be produced at the bottom of the air foot to suspend on the air floating platform. The bottoms of the two supporting parts are connected with the two air foot supports respectively, the tops of the two supporting parts are both connected with the switching support, and the switching support is provided with a switching part used for installing the unfolding hinge.

Description

Technical Field

[0001] The utility model belongs to the field of aerospace technology, and in particular relates to an air floatation degravity device. Background Art

[0002] In order to ensure the smooth deployment of the antenna during the ground test and reduce the impact of gravity on the deployment test process, a degravity device is required to perform gravity unloading operations on the deployment antenna to simulate the microgravity state of the antenna on the ground and ensure the smooth progress of the deployment test.

[0003] Currently, common air flotation de-gravity devices rely on compressed air to form an air film between the flotation platform and the flotation system, levitating the deployed product. This effectively simulates the microgravity of a product in a vacuum environment. However, existing air flotation de-gravity devices provide unstable support for the antenna, making it prone to tipping over during deployment or other posture changes. Utility Model Content

[0004] In view of the above problems, the utility model provides an air flotation degravity device.

[0005] The technical solution of the utility model is:

[0006] An air flotation degravity device comprises a simulation wall, an air flotation platform, and an air flotation system. The simulation wall is used to mount a specimen to be deployed. The air flotation system comprises a control cabinet, an air pipe assembly, and multiple air cushion assemblies. The air cushion assemblies are used to mount the unfolding pages of the specimen to be deployed, and the air cushion assemblies correspond one-to-one to the unfolding pages of the specimen to be deployed. The air cushion assemblies are placed on the air flotation platform, and the control cabinet is used to supply compressed air to the air cushion assemblies through the air pipe assembly to form an air film at the bottom of the air cushion assemblies so that the air cushion assemblies are suspended on the air flotation platform.

[0007] The air cushion assembly includes a plurality of air feet, two air foot brackets, two support portions, and an adapter bracket; the first ends of the two air foot brackets are connected to each other, and the second ends of the two air foot brackets and the connection between the first ends of the two air foot brackets form a triangular configuration and envelop the center of gravity range of the corresponding unfolded page;

[0008] The gas foot is arranged at the bottom of the gas foot bracket, and the control cabinet is used to provide compressed gas to the gas foot so that the bottom of the gas foot produces the air film; the bottoms of the two support parts are respectively connected to the two gas foot brackets, and the tops of the two support parts are connected to the adapter bracket, and the adapter bracket is provided with an adapter part for installing the unfolded page.

[0009] In the air flotation degravity device provided in a preferred embodiment, the support portion includes a support column, a spring, a guide rod, a fastener and a pressure sensor;

[0010] The support column has a first threaded section, a second threaded section and a guide section from bottom to top along its axial direction; the support column is threadedly connected to the corresponding gas foot bracket through the first threaded section; a fastening threaded hole is provided on the fastener, and the fastener is connected to the second threaded section on the support column through the fastening threaded hole; a guide hole is provided at the bottom of the guide rod, and the guide hole is sleeved on the guide section on the support column and slidably connected thereto; the spring is sleeved on the support column, and its two ends respectively abut against the fastener and the guide rod;

[0011] The pressure sensor is arranged between the top of the guide rod and the adapter bracket, and is used to measure and output the pressure transmitted from the adapter bracket.

[0012] In the air flotation degravity device provided in a preferred embodiment, the air foot bracket is provided with a plurality of threaded holes, and the first threaded section on the support column is connected to any one of the threaded holes on the corresponding air foot bracket;

[0013] The pressure sensor is connected to the adapter bracket via a sensor mounting piece. The pressure sensor is fixedly connected to the sensor mounting piece. The connection position of the sensor mounting piece on the adapter bracket is adjustable.

[0014] In the air flotation degravity device provided in a preferred embodiment, both the air foot bracket and the adapter bracket are provided with a weight reduction groove.

[0015] In the air flotation degravity device provided in a preferred embodiment, the air cushion assembly includes three air feet, the second ends of the two air foot brackets are respectively provided with the air feet, and the connecting part of the first ends of the two air foot brackets is provided with the air foot.

[0016] In the air flotation degravity device provided in a preferred embodiment, the air foot is connected to the air foot bracket via a column;

[0017] The column passes through the gas foot bracket and is threadedly connected to it;

[0018] The top of the gas foot has a spherical cavity, and the spherical cavity is provided with an opening on the outer surface of the top of the gas foot. The spherical cavity with the opening forms a receiving groove; a sphere is placed in the receiving groove, and the bottom of the column is connected to the sphere; the column and the gas foot are movably connected through the cooperation of the receiving groove and the sphere.

[0019] In the air flotation degravity device provided in a preferred embodiment, a plurality of air flow channels are provided inside the air foot, the air outlets of the plurality of air flow channels are evenly distributed at the bottom of the air foot, and the air inlet ends of the plurality of air flow channels are gathered into an air inlet, which is provided on the side wall or top of the air foot.

[0020] In the air flotation degravity device provided in a preferred embodiment, the simulation wall is installed on a simulation wall frame; a plurality of universal wheels are provided at the bottom of the simulation wall frame; a plurality of leveling legs are provided on the top of the simulation wall frame, and the height of the leveling legs relative to the simulation wall frame is adjustable.

[0021] In the air flotation degravity device provided in a preferred embodiment, the air flotation platform is installed on an air flotation frame; a plurality of universal wheels are provided at the bottom of the air flotation frame; a plurality of leveling legs are provided on the top of the air flotation frame, and the height of the leveling legs relative to the air flotation frame is adjustable.

[0022] In the air flotation degravity device provided in a preferred embodiment, the leveling legs include vertically arranged studs and a base connected to the bottom of the studs; the simulated wall frame / air flotation frame is provided with a mounting plate for connecting the leveling legs, and the studs pass through the mounting plate and are threadedly connected to it.

[0023] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0024] The air flotation degravity device provided by the utility model has a triangular configuration at the connection between the second ends of the two air foot brackets and the first ends of the two air foot brackets, and the triangular area of ​​the triangular configuration envelops the center of gravity range of the corresponding unfolded page, so that the air cushion assembly has good stability in supporting the unfolded page, and it is not easy to tip over during the unfolding process of the unfolded page of the specimen to be unfolded and when the specimen to be unfolded changes its posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those skilled in the art. The accompanying drawings are only for illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0026] Figure 1 This is a structural diagram of an air flotation degravity device of the utility model;

[0027] Figure 2 This is a structural diagram of a simulated wall assembly of the present invention;

[0028] Figure 3 This is a structural diagram of an air flotation platform assembly of the present utility model;

[0029] Figure 4 This is a structural diagram of an air flotation system of the utility model;

[0030] Figure 5 This is a schematic structural diagram of an air cushion assembly of the present utility model;

[0031] Figure 6 Schematic diagram of the folded state of the test piece to be unfolded;

[0032] Figure 7 Schematic diagram of the unfolded state of the specimen to be unfolded.

[0033] Description of reference numerals:

[0034] 1: Simulation wall assembly; 11: Simulation wall; 12: Simulation wall frame; 13: Universal wheel; 14: Leveling leg;

[0035] 2: Air flotation platform assembly; 21: Air flotation platform; 22: Air flotation frame; 23: Universal wheel; 24: Leveling leg;

[0036] 3: Air flotation system; 31: Air cushion assembly; 311: Air foot; 312: Air foot bracket; 3121: Threaded hole (for threaded connection to support column); 313: Support column; 314: Spring; 315: Guide rod; 316: Fastener; 317: Pressure sensor; 3171: Pressure sensor cable; 318: Adapter bracket; 319: Column; 32: Air pipe; 33: Control cabinet;

[0037] 4: Specimen to be unfolded. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0039] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0040] See Figures 1 to 7This embodiment provides an air flotation degravity device, including a simulation wall component 1, an air flotation platform component 2 and an air flotation system 3.

[0041] The simulated wall assembly 1 comprises a simulated wall 11, a simulated wall frame 12, a plurality of universal wheels 13, and a plurality of leveling legs 14. The simulated wall 11 is used to mount the test piece 4 to be deployed. The simulated wall 11 is mounted on the side of the simulated wall frame 12, and the plurality of universal wheels 13 are provided at the bottom of the simulated wall frame 12. The simulated wall frame 12 is provided with a plurality of leveling legs 14 on top, and the leveling legs 14 are adjustable in height relative to the simulated wall frame 12.

[0042] For details, see Figure 2 The simulation wall frame 12 can be welded from metal profiles. The back of the simulation wall 11 is mounted on the side of the simulation wall frame 12, and the front of the simulation wall 11 is provided with mounting holes for connecting to the test piece 4 to be deployed. Four universal wheels 13 are connected to the bottom of the simulation wall frame 12. The simulation wall frame 12 can be moved by the universal wheels 13, so that the simulation wall assembly 1 can be flexibly rotated. Four mounting plates protrude from the simulation wall frame 12, and each mounting plate is correspondingly provided with a leveling leg 14; the leveling leg 14 includes a vertically arranged stud and a base connected to the bottom of the stud. The stud passes through the mounting plate and is threadedly connected to it. An inner hexagonal groove or an outer hexagonal tightening port can be provided at the top of the stud to facilitate the use of tools to drive the stud to rotate. By driving the leveling legs 14 to raise the height of the simulation wall frame 12, so that the universal wheels 13 are off the ground, the simulation wall frame 12 can be fixed; the leveling legs 14 can also be used to fine-tune the height, pitch, and swing directions of the simulation wall frame 12. It should be noted that the universal wheels 13 and the leveling legs 14 should be staggered to avoid interference between them.

[0043] The air flotation platform assembly 2 includes an air flotation platform 21, an air flotation frame 22, a plurality of universal wheels 23, and a plurality of leveling legs 24. The air flotation platform 21 is used to support the test piece 4 to be deployed. The air flotation platform 21 is mounted on the air flotation frame 22. The air flotation frame 22 has a plurality of universal wheels 23 at its bottom. The air flotation frame 22 has a plurality of leveling legs 24 at its top, and the leveling legs 24 are adjustable in height relative to the air flotation frame 22.

[0044] For details, see Figure 3 The air flotation frame 22 can be welded from metal profiles. The contact surface of the air flotation frame 22 for connection to the air flotation platform 21 is machined after welding to ensure that the contact surface flatness exceeds the required tolerance level 7. The air flotation platform 21 is a flat plate structure that is placed on the contact surface of the air flotation frame 22 (the air flotation platform 21 is placed on the contact surface of the air flotation frame 22 to achieve attachment to the air flotation frame 22). The air flotation platform 21 is preferably made of metal plate or tempered glass, with a surface finish of better than 6.3μm and a flatness of better than the required tolerance level 7.

[0045] The air-floating frame 22 is connected to six universal wheels 23 at its bottom. The air-floating frame 22 can be moved via the universal wheels 23, allowing the air-floating platform assembly 2 to flexibly rotate. Four mounting plates protrude from the air-floating frame 22, each with a corresponding leveling leg 24. The leveling leg 24 includes a vertically arranged stud and a base connected to the bottom of the stud. The stud passes through the mounting plate and is threadedly connected to it. The top of the stud can be provided with a hexagonal groove or hexagonal outer wall to facilitate the use of tools to drive the stud to rotate. By driving the leveling legs 24 to raise the height of the air-floating frame 22, thereby lifting the universal wheels 23 off the ground, the air-floating frame 22 can be fixed. The leveling legs 24 can also be used to fine-tune the height, pitch, and roll of the air-floating frame 22. It should be noted that the universal wheels 23 and leveling legs 24 should be staggered to avoid interference.

[0046] Main references Figure 4 and Figure 5 The air flotation system 3 includes a control cabinet 33, an air pipe assembly, and multiple air cushion assemblies 31. The air cushion assemblies 31 are used to mount the unfolded pages of the specimen 4 to be unfolded, and each air cushion assembly 31 corresponds to the unfolded pages of the specimen 4 to be unfolded. The air cushion assemblies 31 are placed on the air flotation platform 21. The control cabinet 33 is used to supply compressed air to the air cushion assemblies 31 through the air pipe assembly, so that an air film is formed on the bottom of the air cushion assemblies 31, causing them to suspend on the air flotation platform 21.

[0047] Specifically, the air cushion assembly 31 includes a plurality of air feet 311, two air foot brackets 312, two support parts and an adapter bracket 318. The first ends of the two air foot brackets 312 are connected to each other, and the second ends of the two air foot brackets 312 and the connection between the first ends of the two air foot brackets 312 are triangular in configuration and envelop the center of gravity range of the corresponding unfolded page. The air foot 311 is arranged at the bottom of the air foot bracket 312, and the control cabinet 33 is used to provide compressed gas to the air foot 311 through the air pipe assembly so that the above-mentioned air film is produced at the bottom of the air foot 311. The bottoms of the two support parts are respectively connected to the two air foot brackets 312, and the tops of the two support parts are connected to the adapter bracket 318. The adapter bracket 318 is provided with an adapter part for installing the unfolded page.

[0048] Preferably, the air cushion assembly 31 may include three air feet 311 , the second ends of the two air foot brackets 312 are respectively provided with an air foot 311 , and an air foot 311 is provided at the connection point of the first ends of the two air foot brackets 312 .

[0049] More specifically, the support portion includes a support column 313, a spring 314, a guide rod 315, a fastener 316, and a pressure sensor 317. The support column 313 has a first threaded section, a second threaded section, and a guide section from bottom to top along its axial direction, wherein the diameter of the first threaded section may be smaller than the diameter of the second threaded section. The support column 313 is threadedly connected to the corresponding air foot bracket 312 via the first threaded section. A fastening threaded hole is provided on the fastener 316, and the fastener 316 is connected to the second threaded section on the support column 313 via the fastening threaded hole; the fastener 316 may preferably be a nut or the like. A guide hole is provided at the bottom of the guide rod 315, and the guide hole is sleeved on the guide section on the support column 313 and slidably connected thereto. The spring 314 is sleeved on the support column 313, and its two ends respectively abut the fastener 316 and the guide rod. Therefore, when the fastener 316 on the second threaded segment is rotated, the height of the guide rod can be adjusted (for example, when the fastener 316 is rotated, causing the fastener 316 to move upward relative to the support column 313, the spring 314 moves upward accordingly, pushing the guide rod 315 to slide upward relative to the support column 313), thereby adjusting the height of the unfolded page so that the height of the unfolded specimen 4 matches the height of the mounting hole of the simulated wall 11. The design of the spring 314 allows the entire air cushion assembly 31 to smoothly transition on the air flotation platform 21 during the unfolding movement of the unfolded specimen 4. The pressure sensor 317 is located between the top of the guide rod 315 and the adapter bracket 318, and is used to measure and output the pressure transmitted from the adapter bracket 318.

[0050] Furthermore, the gas foot bracket 312 may be provided with multiple threaded holes 3121, and the first threaded section on the support column 313 may be connected to any threaded hole 3121 on the corresponding gas foot bracket 312. The provision of multiple threaded holes 3121 allows for adjustment of the relative position of the adapter bracket 318 and the integral structure formed by the two gas foot brackets 312, thereby ensuring that the air cushion assemblies 31 do not interfere with each other when the unfolded leaves are installed on the respective air cushion assemblies 31.

[0051] The pressure sensor 317 is connected to the adapter bracket 318 via a sensor mounting member. The pressure sensor 317 is fixedly connected to the sensor mounting member, and the connection position of the sensor mounting member on the adapter bracket 318 is adjustable. The sensor mounting member's connection position on the adapter bracket 318 can be adjusted by providing a waist-shaped hole on one of the sensor mounting member and the adapter bracket 318, and providing a round hole on the other. Bolts are passed through the waist-shaped hole and the round hole and then fixed with nuts. This allows the sensor mounting member and the adapter bracket 318 to be fixed in position, while the relative position of the two can be adjusted by loosening the nuts. Of course, other structures can also be used in other embodiments to achieve adjustable connection position of the sensor mounting member on the adapter bracket 318. The sensor mounting member's connection position on the adapter bracket 318 is designed to be adjustable primarily to enable the first threaded section on the support column 313 to be connected to any threaded hole 3121 on the corresponding gas foot bracket 312.

[0052] The adapter portion on the adapter bracket 318 may specifically be an interface for connecting to the test piece 4 to be deployed. The specific structure, size, position, etc. of the structure may be designed according to the external interface of the test piece 4 to be deployed.

[0053] The weight of the air cushion assembly 31 must be strictly controlled during design to minimize the time it takes to deploy and the friction between the air cushion assembly 31 and the air flotation platform 21 during deployment. Therefore, weight-reducing slots can be provided on the air foot bracket 312 and the adapter bracket 318 to minimize the weight of the air cushion assembly 31.

[0054] The gas foot 311 can be connected to the gas foot bracket 312 through the column 319. Specifically, the top of the column 319 can be provided with an external hexagonal tightening port to facilitate the use of tools (such as a wrench, etc.) to rotate the column 319. The bottom of the column 319 is connected to a sphere. Correspondingly, the top of the gas foot 311 has a spherical cavity. The spherical cavity is provided with an opening on the outer surface of the top of the gas foot 311. The spherical cavity with the opening forms a receiving groove. The receiving groove contains the above-mentioned sphere. The bottom of the column 319 is connected to the above-mentioned sphere; the column 319 and the gas foot 311 are movably connected through the cooperation of the receiving groove and the sphere. The gas foot bracket 312 is passed through the middle of the column 319 and is threadedly connected to it. More specifically, the middle of the column 319 is provided with an external thread, and the gas foot bracket 312 is provided with a corresponding threaded hole. The external thread on the middle of the column 319 is threadedly connected to the corresponding threaded hole on the gas foot bracket 312.

[0055] There are multiple air flow channels inside the air foot 311, and the air outlets of the multiple air flow channels are evenly distributed at the bottom of the air foot 311. The air inlet ends of the multiple air flow channels are gathered into an air inlet, which is arranged on the side wall or top of the air foot 311; specifically, in this embodiment, the air inlet is arranged on the side wall of the air foot 311.

[0056] The air pipe assembly includes multiple air pipes 32, which correspond one to one with all the air feet 311 in the air flotation system 3. The air outlets of the air pipes 32 are connected to the air inlets of the corresponding air feet 311. The air pipes 32 can be made of plastic hoses or the like.

[0057] The control cabinet 33 is embedded with an air compressor, which can output compressed air of a specified pressure. The pressure of the output compressed air can be adjusted by the air pressure control valve on the air compressor; the air compressor switch used to control the opening and closing of the air compressor can be set outside the control cabinet 33 for easy operation.

[0058] The control cabinet 33 is also equipped with an airflow duct assembly, which has an air inlet and multiple air outlets. The air inlet of the airflow duct is connected and communicated with the compressed gas output port of the air compressor. The multiple air outlets are installed on the outside of the control cabinet 33 to form multiple air pipe interfaces. The multiple air pipe interfaces correspond one-to-one with and are connected to the air inlets of the multiple air pipes 32. The compressed gas output by the air compressor is delivered to each air foot 311 through the air pipe 32.

[0059] The control cabinet 33 is also provided with a pressure sensor interface and a pressure sensor value display interface. The cable 3171 on the pressure sensor in the air cushion assembly 31 is connected to the pressure sensor interface, and the pressure value detected by the pressure sensor 317 can be displayed on the pressure sensor value display interface.

[0060] The control cabinet 33 may not only include the above-mentioned devices and buttons, but may also add or delete devices and buttons according to specific requirements of actual applications. The specific structure of the control cabinet 33 is not limited.

[0061] When the air flotation system 3 is used, the air pipe 32 must first be used to connect the air cushion assembly 31 and the air pipe interface on the control cabinet 33, and then the cable 3171 of the pressure sensor is connected to the pressure sensor interface on the control cabinet 33 to ensure a good connection.

[0062] The air flotation de-gravity device provided in this embodiment has a spherical contact between the air foot 311 and the column 319 (that is, the connection between the sphere at the bottom of the column 319 and the receiving groove at the top of the air foot 311), so that the air foot 311 can make adaptive angle adjustments according to the flatness of the upper end surface of the air flotation platform 21; the setting of the spring 314 can make the entire air cushion assembly 31 smoothly transition on the air flotation platform 21 during the unfolding movement of the test piece 4 to be unfolded. The spherical contact between the air foot 311 and the column 319 and the application of the spring 314 can avoid the jamming problem of the air cushion assembly 31 caused by the local unevenness of the upper end surface of the air flotation platform 21, and ensure the smooth unfolding of the test piece 4 to be unfolded in the de-gravity state; the support column 313 can correspond to the air foot bracket A suitable threaded hole 3121 is selected on 312 for connection, and the connection position of the sensor mounting part for connecting the pressure sensor 317 on the adapter bracket 318 is adjustable, which can ensure that the air cushion assemblies 31 under each unfolded page of the specimen 4 to be unfolded will not interfere with each other; the setting of the weight reduction groove on the air foot bracket 312 and the adapter bracket 318 can reduce the gravity of the flotation system 3 and reduce the friction between the specimen 4 to be unfolded and the flotation platform 21 during the unfolding process; the gravity unloading value of the air cushion assembly 31 can be read in real time through the pressure sensor 317; the threaded connection between the fastener 316 and the second threaded section on the support column 313 can be used to adjust the height of the specimen 4 to be unfolded so that it matches the height of the mounting hole on the simulation wall 11.

[0063] In this embodiment of the air flotation degravity device, a simulated wall 11 is placed facing the air flotation platform 21, a control cabinet 33 is placed to the side of the air flotation platform 21, and an air cushion assembly 31 is placed on the air flotation platform 21. Before use, the horizontality and flatness of the upper end surface of the air flotation platform 21, as well as the verticality between the mounting surface of the to-be-deployed specimen 4 on the simulated wall 11 and the upper end surface of the air flotation platform 21, must be adjusted using measuring equipment (e.g., a laser tracker). Once these levels are met, the to-be-deployed specimen 4 can be installed. The to-be-deployed specimen 4 is a foldable, multi-leaf structure, with hinges connecting each leaf and the simulated wall 11. The bottom surface of each leaf is secured to the air cushion assembly 31. Two pneumatic supports 312 within the air cushion assembly 31 form a triangular configuration, with the triangular area encompassing the leaf's center of gravity. This ensures that the leaf, once secured to the air cushion assembly 31, stands naturally without tipping over. After the specimen 4 to be unfolded is installed in place, the air compressor switch on the control cabinet 33 is turned on, and the air compressor outputs compressed air, which is transmitted to the bottom of the air foot through the air pipe 32, so that an air film is formed between the bottom of the air foot 311 and the upper end surface of the air flotation platform 21, and the sliding friction between the air cushion assembly 31 and the upper end surface of the air flotation platform 21 is converted into gas flow friction, thereby achieving the de-gravity of each unfolded page in the specimen 4 to be unfolded.

[0064] The following provides a feasible method for using the air flotation degravity device of this embodiment, which is as follows:

[0065] (1) Using measuring equipment (such as a laser tracker), use the leveling legs 24 to adjust the flatness and horizontality of the air-floating platform 21 to ensure that it meets the index requirements;

[0066] (2) With the help of measuring equipment (such as a laser tracker), use the leveling legs 14 to adjust the verticality of the mounting surface of the test piece 4 to be deployed on the simulation wall 11 and the upper end surface of the air flotation platform 21 to ensure that it meets the index requirements;

[0067] (3) Start the air compressor in the control cabinet 33 to ensure that the air cushion assembly 31 can slide smoothly on the air floating platform 21 without getting stuck, then reset the value of the pressure sensor 317 to zero and turn off the air compressor;

[0068] (4) Install each unfolded page of the unfolded specimen 4 onto the air cushion assembly 31 one by one, and compare the weight of each unfolded page with the detection value of the pressure sensor 317 (due to the structure of the adapter bracket 318, conversion is required during the comparison) to confirm the gravity unloading situation;

[0069] (5) First connect the inner expansion page hinge to the simulation wall 11, and then connect each expansion page with the hinge from the inside to the outside. By adjusting the fasteners 316, the installation height of each expansion page is matched to make the assembly process stress-free. During the assembly process, the air compressor can be started to realize the flexible movement of each expansion page on the air flotation platform 21;

[0070] (6) Start the air compressor in the control cabinet 33 and close the test piece 4 to be unfolded. Figure 6 As shown, then carry out the corresponding expansion test;

[0071] (7) If Figure 7 As shown, the test piece 4 to be unfolded is unfolded smoothly. During the unfolding process, the weight-removal value of each unfolded page can be read in real time. After the test is completed, the air compressor in the control cabinet 33 is turned off.

[0072] The air flotation de-gravity device provided in this embodiment uses air flotation to achieve de-gravity on a test specimen 4 to be deployed along a two-dimensional deployment trajectory, simulating the microgravity conditions of the antenna on the ground and ensuring smooth deployment testing. This air flotation de-gravity device boasts a simple structure, flexible transport, and high de-gravity efficiency. It effectively addresses the issue of flexible transport and demonstrates its superiority in deployment testing of test specimens to be deployed along a two-dimensional deployment trajectory.

[0073] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they will still fall within the scope of protection of the present invention.

Claims

1. An air flotation degravity device, characterized in that: The system comprises a simulation wall, an air flotation platform and an air flotation system. The simulation wall is used to install the specimen to be deployed. The air flotation system comprises a control cabinet, an air pipe assembly and multiple air cushion assemblies. The air cushion assemblies are used to install the unfolding pages of the specimen to be deployed, and the air cushion assemblies correspond one-to-one to the unfolding pages of the specimen to be deployed. The air cushion assemblies are placed on the air flotation platform. The control cabinet is used to supply compressed gas to the air cushion assemblies through the air pipe assembly to form an air film at the bottom of the air cushion assemblies so that the air cushion assemblies are suspended on the air flotation platform. The air cushion assembly includes a plurality of air feet, two air foot brackets, two support portions, and an adapter bracket; the first ends of the two air foot brackets are connected to each other, and the second ends of the two air foot brackets and the connection between the first ends of the two air foot brackets form a triangular configuration and envelop the center of gravity range of the corresponding unfolded page; The gas foot is provided at the bottom of the gas foot bracket, and the control cabinet is used to provide compressed gas to the gas foot so that the gas film is produced at the bottom of the gas foot; The bottoms of the two support parts are respectively connected to the two air foot brackets, and the tops of the two support parts are both connected to the adapter bracket. The adapter bracket is provided with an adapter part for installing the unfolded page.

2. The air flotation degravity device according to claim 1, characterized in that: The support portion includes a support column, a spring, a guide rod, a fastener and a pressure sensor; The support column has a first threaded section, a second threaded section and a guide section from bottom to top along its axial direction; the support column is threadedly connected to the corresponding gas foot bracket through the first threaded section; a fastening threaded hole is provided on the fastener, and the fastener is connected to the second threaded section on the support column through the fastening threaded hole; a guide hole is provided at the bottom of the guide rod, and the guide hole is sleeved on the guide section on the support column and slidably connected thereto; the spring is sleeved on the support column, and its two ends respectively abut against the fastener and the guide rod; The pressure sensor is arranged between the top of the guide rod and the adapter bracket, and is used to measure and output the pressure transmitted from the adapter bracket.

3. The air flotation degravity device according to claim 2, characterized in that: The gas foot bracket is provided with a plurality of threaded holes, and the first threaded section on the support column is connected to any one of the threaded holes on the corresponding gas foot bracket; The pressure sensor is connected to the adapter bracket via a sensor mounting piece. The pressure sensor is fixedly connected to the sensor mounting piece. The connection position of the sensor mounting piece on the adapter bracket is adjustable.

4. The air flotation degravity device according to claim 2, characterized in that: The gas foot bracket and the adapter bracket are both provided with weight-reducing grooves.

5. The air flotation degravity device according to claim 1, characterized in that: The air cushion assembly includes three air feet, the second ends of the two air foot brackets are respectively provided with the air feet, and the connecting portion of the first ends of the two air foot brackets is provided with the air foot.

6. The air flotation degravity device according to claim 1, characterized in that: The gas foot is connected to the gas foot bracket through a column; The column passes through the gas foot bracket and is threadedly connected to it; The top of the gas foot has a spherical cavity, and the spherical cavity is provided with an opening on the outer surface of the top of the gas foot. The spherical cavity with the opening forms a receiving groove; a sphere is placed in the receiving groove, and the bottom of the column is connected to the sphere; the column and the gas foot are movably connected through the cooperation of the receiving groove and the sphere.

7. The air flotation degravity device according to claim 1, characterized in that: The interior of the air foot is provided with a plurality of air flow channels, the air outlets of the plurality of air flow channels are uniformly distributed at the bottom of the air foot, the air inlet ends of the plurality of air flow channels are gathered into an air inlet, and the air inlet is provided on the side wall or top of the air foot.

8. The air flotation degravity device according to claim 1, characterized in that: The simulation wall is installed on a simulation wall frame; a plurality of universal wheels are provided at the bottom of the simulation wall frame; a plurality of leveling legs are provided on the top of the simulation wall frame, and the height of the leveling legs relative to the simulation wall frame is adjustable.

9. The air flotation degravity device according to claim 1, characterized in that: The air floating platform is installed on the air floating frame; a plurality of universal wheels are provided at the bottom of the air floating frame; a plurality of leveling legs are provided on the top of the air floating frame, and the height of the leveling legs relative to the air floating frame is adjustable.

10. The air flotation degravity device according to claim 8 or 9, characterized in that: The leveling legs include vertically arranged studs and a base connected to the bottom of the studs; a mounting plate for connecting the leveling legs is provided on the simulated wall frame / air floating frame, and the studs pass through the mounting plate and are threadedly connected to the mounting plate.

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