General unloading device for solid surface antenna

Abstract

The application relates to a general unloading device for a solid surface antenna and belongs to the technical field of spacecraft overall assembly; the device comprises an unloading fixing frame, two side wall supports, a position adjusting structure, an antenna adapter plate, two yokes and two suspension arm mechanisms; the two side wall supports are horizontally arranged symmetrically on the two sides of the unloading fixing frame; the roots of the two side wall supports are connected with the unloading fixing frame; the position adjusting structure and the antenna adapter plate are respectively installed at the head ends of the one side wall supports; the two yokes are symmetrically arranged on the top of the unloading fixing frame; one suspension arm mechanism is correspondingly installed on the top of each yoke; one end side wall of the unloading fixing frame is connected with an external satellite, and the other end side wall is connected with an external two-axis turntable; the application can be applicable to the unfolding and precision keeping requirements of different solid surface antennas on the east-west panels of satellites, and can realize the rapid assembly of AIT stages and launch sites. The device has high adaptability, and through adaptive modification of the suspension arm supports and the side arm frames, the unloading tasks of various different specifications of solid surface antennas can be adapted.

Description

Technical Field

[0001] This invention belongs to the field of spacecraft overall assembly technology and relates to a universal unloading device for solid surface antennas. Background Technology

[0002] The common layout for existing international communication satellites is to have fixed, deployable antennas arranged on the east and west sides respectively. Antenna deployment tests and compression plant EMC tests are required during the AIT assembly phase, and antenna deployment tests are required during the launch site phase.

[0003] Due to the large mass, high angular pointing requirements, and stringent positioning accuracy requirements of antennas, a specialized device needs to be designed to meet the requirements of unloading during antenna deployment and maintaining pointing accuracy after deployment. This device must have high installation accuracy and reliable load-bearing capacity.

[0004] The current tooling has the following problems: In the Beijing area, antenna deployment trusses and unloading devices need to be built, which takes up a lot of space and time; antenna deployment and unloading tooling needs to be specially designed, and the debugging cycle is long; L-shaped brackets for the compression plant need to be specially designed; in the launch site area, deployment trusses need to be built and unloading tooling needs to be debugged in advance, which takes up a lot of time and space at the launch site, becoming a major bottleneck in optimizing the satellite development process. Summary of the Invention

[0005] The technical problem solved by this invention is to overcome the shortcomings of existing technologies and propose a universal unloading device for solid-surface antennas. This device is applicable to the deployment and accuracy maintenance requirements of different solid-surface antennas on the east and west sides of satellites, and enables rapid assembly during the AIT phase and at the launch site. This device is highly adaptable; by adaptively modifying the boom support and side boom, it can accommodate unloading tasks for various specifications of solid-surface antennas.

[0006] The solution of the present invention is:

[0007] A universal unloading device for a fixed antenna includes an unloading mounting frame, two side wall supports, an attitude adjustment structure, an antenna adapter plate, two head brackets, and two boom mechanisms. The unloading mounting frame is horizontally positioned. The two side wall supports are symmetrically arranged horizontally on both sides of the unloading mounting frame. The roots of the two side wall supports are connected to the unloading mounting frame. The attitude adjustment structure is installed at the head end of one of the side wall supports. The antenna adapter plate is installed at the head end of the other side wall support. The two head brackets are symmetrically arranged on the top of the unloading mounting frame. One boom mechanism is installed on the top of each head bracket. One side wall of the unloading mounting frame is connected to an external satellite. The other side wall of the unloading mounting frame is connected to an external two-axis turntable.

[0008] In the aforementioned general unloading device for a solid surface antenna, the side wall bracket is a horizontally placed L-shaped structure; the long sides of the two side wall brackets are located on the same horizontal line; and the short sides of the two side wall brackets both point towards the external satellite.

[0009] In the aforementioned universal unloading device for solid-surface antennas, an external two-axis turntable is used to horizontally or vertically flip external satellites.

[0010] In the aforementioned universal unloading device for a fixed-surface antenna, the unloading mounting frame includes an unloading mounting frame body, a satellite-borne adapter frame, and a two-axis adapter frame. The unloading mounting frame body is a cuboid frame structure; both the satellite-borne adapter frame and the two-axis adapter frame are annular frame structures. The satellite-borne adapter frame is installed on the side wall of the unloading mounting frame body facing the external satellite; the two-axis adapter frame is installed on the side wall of the unloading mounting frame body facing the external two-axis turntable. The satellite-borne adapter frame and the two-axis adapter frame are placed opposite each other. The unloading mounting frame body is connected to the external satellite via the satellite-borne adapter frame; the unloading mounting frame body is connected to the external two-axis turntable via the two-axis adapter frame.

[0011] In the aforementioned universal unloading device for a solid-surface antenna, the boom mechanism includes a boom support, a rotary rocker arm, a guide rail trolley, and an antenna hoist; wherein, the boom support is an L-shaped frame, the root of the boom support is installed on the top of the corresponding bullhead frame, and the head of the boom support points horizontally towards the external satellite direction; the rotary rocker arm is horizontally installed at the head end of the boom support; the guide rail trolley is installed at the bottom of the rotary rocker arm; and the antenna hoist is vertically installed on the guide rail trolley.

[0012] In the aforementioned general unloading device for a solid surface antenna, the rotating rocker arm is a vertically placed triangular structure; the vertical side of the rotating rocker arm is rotatably connected to the boom support, and the axis of rotation is vertical, so as to realize the horizontal swing of the rotating rocker arm relative to the boom support.

[0013] In the aforementioned universal unloading device for solid-surface antennas, the antenna hoist is used to hoist antennas installed on external satellites, and the antenna hoist is moved horizontally via a guide rail trolley.

[0014] In the aforementioned universal unloading device for solid-surface antennas, the working process of the universal unloading device for solid-surface antennas is as follows:

[0015] Initially, the antennas on both sides of the external satellite are retracted and close to the side walls of the external satellite. After the unloading mounting bracket is docked with the external satellite and the external two-axis turntable, the angle of the rotary rocker arm and the position of the antenna hoist are adjusted so that the two antenna hoists are aligned with the antennas on both sides of the external satellite. The two antenna hoists each lift one antenna, and the antennas are unloaded through the antenna hoists during the antenna unfolding process. After the antennas are in place, one antenna is docked through the attitude adjustment mechanism and the other antenna is docked through the antenna adapter plate. The two antenna hoists are then removed, and the antennas are unloaded through the attitude adjustment mechanism and the antenna adapter plate.

[0016] In the aforementioned general unloading device for a solid-surface antenna, the pose adjustment mechanism enables fine-tuning of the antenna's pitch angle.

[0017] In the aforementioned general unloading device for a solid-surface antenna, the height of the spaceborne adapter frame is 200mm, and the connection interface with the external satellite is a standard satellite-rocket docking interface; positioning pin holes are required in four quadrants; the structure adopts an outward-flange form to facilitate the installation and operation of the device by the external satellite.

[0018] The two-axis adapter frame adopts a standard satellite-rocket docking interface with a height of 200mm; positioning pin holes are provided in the four quadrants; the structure adopts an outward flange form to facilitate the installation and operation of the device by external satellites.

[0019] The advantages of this invention compared to the prior art are:

[0020] (1) The universal unloading device for solid surface antennas of the present invention is equipped with multiple fine-tuning interfaces, which can be applied to the installation requirements of various solid surface antennas of different specifications.

[0021] (2) The universal unloading device for solid surface antennas of the present invention can meet the unloading requirements during antenna deployment;

[0022] (3) The universal unloading device for solid surface antennas of the present invention can meet the requirements of antenna position retention during EMC testing in the compression plant;

[0023] (4) The universal unloading device for solid surface antennas of the present invention can meet the requirements for antenna deployment and unloading in the transmission site area;

[0024] (5) The universal unloading device for solid surface antennas of the present invention can solve the problems of large antenna truss construction site requirements, long truss construction cycle, and complex unloading and debugging, and optimize the launch site process.

[0025] (6) The universal unloading device for solid surface antennas of the present invention can replace multiple tools such as antenna deployment truss, antenna unloading fixture, L-shaped bracket of compression plant, and antenna deployment truss of transmission site, saving factory storage space and management costs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the universal unloading device for solid-surface antennas of the present invention.

[0027] Figure 2 This is a top view of the unloading fixture of the present invention;

[0028] Figure 3 This is a schematic diagram of the unloading of the boom mechanism of the present invention;

[0029] Figure 4 This is a schematic diagram of the pose adjustment structure and antenna adapter board unloading of the present invention. Detailed Implementation

[0030] The present invention will be further described below with reference to the embodiments.

[0031] This invention provides a universal unloading device for solid-surface antennas, applicable to the deployment and accuracy maintenance requirements of different solid-surface antennas on the east and west sides of satellites, enabling rapid assembly during the AIT phase and at the launch site. This device is highly adaptable; by modifying the boom support and side boom, it can accommodate unloading tasks for various specifications of solid-surface antennas.

[0032] Universal unloading device for solid surface antennas, such as Figure 1 As shown, the system specifically includes an unloading mounting frame, two side wall supports, an attitude adjustment structure, an antenna adapter plate, two head-mounted brackets, and two boom mechanisms. The unloading mounting frame is horizontally positioned. The two side wall supports are symmetrically arranged horizontally on both sides of the unloading mounting frame. The roots of the two side wall supports are connected to the unloading mounting frame. The attitude adjustment structure is installed at the head of one side wall support. The antenna adapter plate is installed at the head of the other side wall support. The two head-mounted brackets are symmetrically arranged on top of the unloading mounting frame. Each head-mounted bracket has a boom mechanism installed on its top. One side wall of the unloading mounting frame is connected to an external satellite. The other side wall of the unloading mounting frame is connected to an external two-axis turntable. The side wall supports are horizontally positioned L-shaped structures. The long sides of the two side wall supports are on the same horizontal line. The short sides of both side wall supports point towards the external satellite. The external two-axis turntable uses a universal unloading device for fixed-surface antennas to horizontally or vertically rotate the external satellite.

[0033] like Figure 2 As shown, the unloading fixture includes an unloading fixture body, a satellite-borne adapter frame, and a two-axis adapter frame. The unloading fixture body is a cuboid frame structure. Both the satellite-borne adapter frame and the two-axis adapter frame are annular frame structures. The satellite-borne adapter frame is installed on the side wall of the unloading fixture body facing the external satellite. The two-axis adapter frame is installed on the side wall of the unloading fixture body facing the external two-axis turntable. The satellite-borne adapter frame and the two-axis adapter frame are placed opposite each other. The unloading fixture body docks with the external satellite through the satellite-borne adapter frame. The unloading fixture body docks with the external two-axis turntable through the two-axis adapter frame.

[0034] The jib mechanism includes a jib support, a slewing rocker arm, a guide rail pulley and an antenna sling; among them, the jib support is an L-shaped frame, the root of the jib support is installed on the top of the corresponding bullhead frame, and the head of the jib support points horizontally towards the external satellite direction; the slewing rocker arm is horizontally installed at the head end of the jib support; the guide rail pulley is installed at the bottom of the slewing rocker arm; the antenna sling is vertically installed on the guide rail pulley. Among them, the slewing rocker arm is a vertically placed triangular structure; the vertical side of the slewing rocker arm is rotationally connected to the jib support, and the rotation axis is in the vertical direction, realizing the horizontal swing of the slewing rocker arm relative to the jib support. The antenna sling is used to hoist the antenna installed on the external satellite, and the antenna sling realizes horizontal movement through the guide rail pulley.

[0035] The working process of the general unloading device for the fixed surface antenna is as follows:

[0036] In the initial state, the antennas on both sides of the external satellite are in a contracted state, clinging to the side wall of the external satellite; after the unloading fixing frame is docked with the external satellite and the external two-axis turntable, adjust the angle of the slewing rocker arm and the position of the antenna sling to align the two antenna slings with the antennas on both sides of the external satellite; the two antenna slings respectively lift an antenna, and unload the antenna through the antenna sling during the process of antenna deployment, as Figure 3 shown. After the antennas are opened in place, dock one antenna through the pose adjustment mechanism respectively, dock the other antenna through the antenna adapter plate, remove the two antenna slings, and realize the unloading of the antenna through the pose adjustment mechanism and the antenna adapter plate, as Figure 4 shown. The pose adjustment mechanism realizes fine adjustment of the pitching angle of the antenna.

[0037] The height of the on-board adapter frame is 200 mm, and the connection interface with the external satellite is a standard satellite-rocket docking interface; at the same time, positioning pin holes need to be set at the four quadrants; the structural form adopts an outward flanging form, which is convenient for the installation operation of the device on the external satellite; the two-axis adapter frame adopts a standard satellite-rocket docking interface, with a height of 200 mm; positioning pin holes are set at the four quadrants; the structural form adopts an outward flanging form, which is convenient for the installation operation of the device on the external satellite.

[0038] In the present invention, the bullhead frame and the side arm cross frame reserve an M10 fastener installation matrix in units of 100 mm at the +X and -X two end faces.

[0039] The body of the unloading fixing frame adopts a "field" - shaped structure, with a thickness of 500 mm; diagonal braces are welded on the +Z and -Z installation surfaces to form a circular installation surface to adapt to the installation of the two-axis adapter frame and the on-board adapter frame, and other areas are all subjected to weight reduction treatment. Matrix installation holes with a 100 mm interval are reserved on the +X, -X, +Y, and -Y installation surfaces of the body of the unloading fixing frame to adapt to the fine adjustment of the antenna position.

[0040] The satellite-borne adapter frame of this invention connects the universal unloading device for the antenna and the satellite docking frame. It is 200mm high and the connection interface with the satellite is the 1194A standard satellite-rocket docking interface. It uses 44 M8 mounting holes for connection, which can meet the connection between the two axes and the satellite. At the same time, positioning pin holes are required in four quadrants. The structure adopts an outward flange form to facilitate the installation operation of the device outside the satellite.

[0041] The two-axis adapter frame adopts the standard Star-Rocket 1194A docking interface, with a height of 200mm. It uses 44 M8 mounting holes for connection, which can meet the connection between the two axes and the satellite. At the same time, positioning pin holes need to be set in four quadrants. The structure adopts an outward flange form to facilitate the installation and operation of the tooling outside the satellite.

[0042] The antenna universal unloading device connects the antenna adapter plate to the rib on the back of the antenna during antenna deployment and unloading. The antenna hoist is suspended above the antenna adapter plate and mounted on the rotating rocker arm. The rotating rocker arm is connected to the end of the side arm bracket, and the other end of the side arm bracket is mounted on the bullhead frame using fasteners.

[0043] In the antenna universal unloading device of the present invention, when the antenna position is maintained, the antenna adapter plate is connected to the position adjustment mechanism, the position adjustment mechanism is installed on the side arm bracket, the side arm bracket is connected to the end of the side arm cross frame, and the other end of the side arm cross frame is installed on the fixed frame body by means of fastener connection.

[0044] The center of the rotating arm's axis needs to be adjusted to be consistent with the antenna's axis. If the antenna's axis has an angular deviation from the Y-axis of the entire satellite, a guide rail trolley needs to be added between the antenna hoist and the rotating arm to accommodate the displacement deviation caused by the angular offset. At the same time, the center of the rotating arm's axis should be adjusted to be consistent with the Y-axis of the antenna's center point.

[0045] This invention relates to a universal unloading device for solid-surface antennas, featuring multiple fine-tuning interfaces to accommodate the installation requirements of various solid-surface antennas of different specifications. It can meet the unloading requirements during antenna deployment; it can meet the antenna's positional maintenance requirements during EMC testing at the compression plant; and it can meet the antenna's deployment and unloading requirements at the transmission site.

[0046] The present invention provides a universal unloading device for solid-surface antennas, which can solve problems such as large requirements for antenna truss construction site, long truss construction cycle, and complex unloading and debugging, and optimize the launch site process. Moreover, this universal unloading device for solid-surface antennas can replace multiple tools such as antenna deployment truss, antenna unloading fixtures, L-shaped brackets in the compression plant, and antenna deployment truss in the launch site, saving factory storage space and management costs.

[0047] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A universal unloading device for a solid-surface antenna, characterized in that: The system includes an unloading mounting frame, two side wall supports, an attitude adjustment structure, an antenna adapter plate, two head-mounted brackets, and two boom mechanisms. The unloading mounting frame is horizontally positioned. The two side wall supports are symmetrically arranged horizontally on both sides of the unloading mounting frame, with their bases connected to the frame. The attitude adjustment structure is installed at the head of one side wall support. The antenna adapter plate is installed at the head of the other side wall support. The two head-mounted brackets are symmetrically arranged on top of the unloading mounting frame. Each head-mounted bracket has a boom mechanism installed on its top. One side wall of the unloading mounting frame is connected to an external satellite, and the other side wall is connected to an external two-axis turntable. The unloading fixture includes an unloading fixture body, a satellite-borne adapter frame, and a two-axis adapter frame. The unloading fixture body is a cuboid frame structure. Both the satellite-borne adapter frame and the two-axis adapter frame are annular frame structures. The satellite-borne adapter frame is installed on the side wall of the unloading fixture body facing the external satellite. The two-axis adapter frame is installed on the side wall of the unloading fixture body facing the external two-axis turntable. The satellite-borne adapter frame and the two-axis adapter frame are placed opposite each other. The unloading fixture body docks with the external satellite via the satellite-borne adapter frame. The unloading fixture body docks with the external two-axis turntable via the two-axis adapter frame. The boom mechanism includes a boom support, a slewing arm, a guide rail trolley, and an antenna hoist; wherein, the boom support is an L-shaped frame, the base of the boom support is installed on the top of the corresponding bullhead frame, and the head of the boom support points horizontally towards the external satellite; the slewing arm is horizontally installed at the head end of the boom support; the guide rail trolley is installed at the bottom of the slewing arm; and the antenna hoist is vertically installed on the guide rail trolley. The rotary rocker arm is a vertically placed triangular structure; the vertical side of the rotary rocker arm is rotatably connected to the boom support, and the axis of rotation is vertical, so that the rotary rocker arm can swing horizontally relative to the boom support.

2. The universal unloading device for a solid-surface antenna according to claim 1, characterized in that: The sidewall brackets are horizontally placed L-shaped structures; the long sides of the two sidewall brackets are on the same horizontal line; the short sides of the two sidewall brackets both point towards the external satellite.

3. The universal unloading device for a solid-surface antenna according to claim 1, characterized in that: The external two-axis turntable enables the external satellite to be flipped horizontally or vertically through a universal unloading device for solid-surface antennas.

4. A universal unloading device for a solid-surface antenna according to claim 1, characterized in that: The antenna hoist is used to hoist antennas installed on external satellites, and the antenna hoist moves horizontally via a guide rail trolley.

5. A universal unloading device for a solid-surface antenna according to claim 4, characterized in that: The working process of the universal unloading device for solid surface antennas is as follows: Initially, the antennas on both sides of the external satellite are retracted and close to the side walls of the external satellite. After the unloading mounting bracket is docked with the external satellite and the external two-axis turntable, the angle of the rotary rocker arm and the position of the antenna hoists are adjusted so that the two antenna hoists are aligned with the antennas on both sides of the external satellite. The two antenna hoists each lift one antenna, and the antennas are unloaded through the antenna hoists during the antenna unfolding process. After the antennas are in place, one antenna is docked through the attitude adjustment mechanism, and the other antenna is docked through the antenna adapter plate. The two antenna hoists are then removed, and the antennas are unloaded through the attitude adjustment mechanism and the antenna adapter plate.

6. A universal unloading device for a solid-surface antenna according to claim 5, characterized in that: The pose adjustment mechanism enables fine-tuning of the antenna's pitch angle.

7. A universal unloading device for a solid-surface antenna according to claim 1, characterized in that: The height of the spaceborne adapter frame is 200mm, and the interface for connecting with external satellites is a standard satellite-rocket docking interface; positioning pin holes also need to be set in four quadrants. The structure adopts an outward-flared design, which facilitates the installation and operation of the device by external satellites. The two-axis adapter frame adopts a standard star-and-arrow docking interface and has a height of 200mm; Positioning pin holes are provided in the four quadrants; The structure adopts an outward-flared design, which facilitates the installation and operation of the device by external satellites.

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