CN113428383B - Board-like moonlet guarantor type frock - Google Patents

Abstract

The invention relates to a plate-type small satellite shape-preserving tool, which comprises a + Z plate shape-preserving frame, a load + Y shape-preserving triangular plate, a load-Y shape-preserving triangular plate, a platform + Y shape-preserving triangular plate, a platform-Y shape-preserving triangular plate and a hoisting point; the plate-frame type minisatellite comprises a load module and a platform module; the + Z plate-shaped frame comprises a main body frame, an end reinforcing beam, an overturning interface bracket and a middle reinforcing beam, and forms a closed force transmission structure to control the structural deformation of the satellite; the load + Y shape-preserving set square and the load-Y shape-preserving set square are connected with the load module, and the platform + Y shape-preserving set square and the platform-Y shape-preserving set square are connected with the platform module and used for maintaining the precision of the load module and the platform module under the working conditions of structural decomposition, final assembly test, transportation, transfer, butt joint integration and the like. The shape-preserving tool is compact in structure, meets the requirement of maintaining the structure precision under the assembly working conditions of satellite structure decomposition, module assembly, butt joint integration and the like, and is particularly suitable for plate frame type minisatellites produced in batches.

Description

A plate frame type small satellite shape-preserving tooling

technical field

The invention relates to a plate-frame type small satellite shape-preserving tool, belonging to the field of satellite assembly design, and is particularly suitable for the use of plate-frame low-orbit Internet satellites produced in batches.

Background technique

In recent years, the development of the global low-orbit Internet constellation field has entered a peak period. Led by Iridium-Next, OneWeb, Starlink and other constellations, the trend of "competing for the best" to seize the market's first-mover position has become prominent, and the industry has entered a substantial phase of competition and elimination. stage. In order to improve the efficiency of mass production, low-orbit Internet satellites generally adopt a modular design, based on the parallel assembly of single boards or modules, and the satellites adopt a plate-type or frame-type load-bearing structure according to different launch weights. For example, the small satellite represented by OneWeb (launch weight 200kg) adopts a plate-frame structure instead of the frame structure of the Iridium-Next satellite (launch weight 860kg) to improve the efficiency of structure use. Different from the frame-type structure, which can provide a reliable and stable assembly reference, the plate-type satellite is difficult to meet the requirements of the satellite assembly under various working conditions such as structural decomposition, module assembly, and docking integration, depending on the hole position accuracy of the structural plate and its own rigidity. Structural deformation and shape and position accuracy requirements have adversely affected the quality of the satellite assembly and severely restricted the efficiency of satellite mass production.

SUMMARY OF THE INVENTION

The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, a panel-type small satellite shape-preserving tooling is proposed. The tooling has a compact structure and can meet the requirements of satellite structure decomposition, module assembly, and docking integration. At the same time, it is equipped with a load module parking and turning interface, which is flexible and compatible with other ground tooling, which is convenient for the expansion of tooling functions.

The technical scheme adopted in the present invention is: a plate frame type small satellite shape-preserving tooling, comprising: +Z plate shape-preserving frame, load+Y shape-preserving triangle, load-Y shape-preserving triangle, platform+Y shape-preserving triangle, Platform-Y-guaranteed triangle plate and hanging point; the plate-frame small satellite includes a load module and a platform module, the load module equipment is installed on the +Z structural plate and the +X structural plate, and the platform equipment is installed on the -Z structural plate and - X structural plate; for the convenience of description, the coordinate system definition is given, the origin O is the geometric center of the -Z structural plate, the Z axis along the origin O points to the +Z structural plate is positive, the X axis vertically points to the +X structural plate is positive, Y The axis is right-handed with the Z axis and the X axis.

The +Z plate shape-preserving frame includes a main frame, an end reinforcing beam, a flip interface bracket, and a middle reinforcing beam, which together form a "Sun"-shaped closed force transmission structure. The main frame is a frame-board composite structure with one end open. There are two sets of installation interfaces at the end of the top +X side to connect with the end reinforcement beams, and two sets of installation interfaces are set at the ±Y sides to connect to the hanging points. -X side There is a set of installation interfaces to connect with the flip interface bracket; the 4 corner positions of the bottom surface are provided with installation interfaces to connect with the load module parking tool, and the installation flange of the bottom surface is provided with installation holes to connect with the +Z structural plate. The end reinforcing beam is an arch bridge-shaped frame structure. There are two sets of interface flanges at the bottom to connect with the main frame. The middle of the +X side end face is provided with a flip interface plate; the other side of the main frame is installed with a flip interface bracket, which is connected by a triangle support bracket. It is composed of a circular interface plate, which is coaxially installed with the end reinforcement beam flip interface plate, and is provided with an interface to connect with the load module flip frame cart. The middle reinforcing beam is a comb-shaped structure, which is composed of a tubular structural beam and a number of "concave" section spacers. The mounting flange of each spacer block is provided with an interface to connect with the +Z structural plate.

型夹心结构，由对接板、后挡板中间铆接加强梁而成，直角位置设有三角形加强肋板增加结构刚度，设置把手便于总装操作；对接板安装法兰上设置一组安装接口，长边方向与载荷模块+Z结构板相连，短边方向与载荷模块+X结构板相连，用于载荷模块分解起吊、总装测试、运输转运及对接集成等工况下的精度保持。The load + Y shape-guaranteed triangle plate and load-Y shape-guaranteed triangle plate are symmetrical along the XOZ plane, and use right angles.

The type sandwich structure is formed by riveting the reinforcing beam between the butt plate and the rear baffle. The triangular reinforcing rib plate is arranged at the right angle to increase the structural rigidity, and the handle is provided to facilitate the assembly operation. The load module + Z structure plate is connected, and the short side direction is connected to the load module + X structure plate, which is used for the accuracy maintenance under the conditions of load module disassembly and lifting, final assembly test, transportation and transfer and docking integration.

型夹心结构，由对接板、后挡板中间铆接加强梁而成，直角位置设有三角形加强肋板增加结构刚度，设置把手便于总装操作；对接板安装法兰上设置一组安装接口，长边方向与平台模块-Z结构板相连，短边方向与平台模块-X结构板相连，用于平台模块结构分解、总装测试、运输转运及对接集成等工况下的精度保持；长边中部设置“U字型”转接开口避让平台设备。The platform+Y-shaped triangle plate and the platform-Y-shaped triangle plate are symmetrical along the XOZ plane and adopt right angles.

The type sandwich structure is formed by riveting the reinforcing beam between the butt plate and the rear baffle. The triangular reinforcing rib plate is arranged at the right angle to increase the structural rigidity, and the handle is provided to facilitate the assembly operation. The platform module-Z structural plate is connected, and the short side is connected to the platform module-X structural plate, which is used to maintain the accuracy of the platform module structure decomposition, final assembly test, transportation and docking integration, etc.; "Type" adapter opening to avoid platform equipment.

The main frame, the end reinforcing beams, and the middle reinforcing beams are welded by pipes and plates; the load+Y-shaped triangle plates, the load-Y-shaped triangles, the platform+Y-shaped triangles, and the platform-Y-shaped triangles are made of pipes. Riveted to the plate.

Compared with the prior art, the present invention has the following advantages:

(1) The shape-preserving tooling of the present invention forms a "Sun"-shaped closed force transmission structure through the main frame, end reinforcing beams, middle reinforcing beams and other structural parts, with high bearing capacity, and can better control equipment under heavy loads. structural deformation;

(2) The load of the form-preserving tooling and the platform form-preserving triangular plate of the present invention adopts a pipe + plate riveted sandwich structure, and is provided with a triangular reinforcing rib, which is light and stable in structure, and meets the structural decomposition, module assembly, and docking integration of the load module and the platform module. Requirements for relative positioning accuracy between plates and structural reassembly accuracy under other working conditions;

(3) The shape-preserving tooling of the present invention is provided with hoisting, parking and turning interfaces, and is flexibly compatible with other ground toolings. In addition to maintaining the basic functions of structural accuracy, it can meet the needs of various working conditions such as load module parking, transportation and transfer, rotary assembly testing, lifting and docking, etc., which greatly improves the versatility and expansibility of tooling and saves the development cost of ground tooling. .

Description of drawings

Figure 1 is an exploded schematic diagram of the conformal tooling (without load module);

Figure 2 is a schematic diagram of the combination of the conformal tooling (including the load module);

Figure 3 is a schematic diagram of the +Z plate shape-preserving frame;

Figure 4 is a schematic diagram of the load+Y shape-protecting triangle plate/load-Y shape-protecting triangle plate;

Figure 5 is a schematic diagram of the platform + Y-guaranteed triangle/platform-Y-guaranteed triangle;

Figure 6 is a schematic diagram of the docking between the load module and the parking tool;

FIG. 7 is a schematic diagram of the docking between the load module and the overturning tool;

FIG. 8 is a schematic diagram of the disassembly/interconnection between the load module and the platform module.

Specific implementation example

The present invention will be further described below in conjunction with the accompanying drawings. For the convenience of description, the definition of the coordinate system is given for the convenience of description. The origin O is the geometric center of the -Z structural plate of the satellite, the Z-axis points to the +Z structural plate of the satellite along the origin O, and the X-axis points vertically to the +X structure of the satellite. The plate is positive, and the Y axis is right-handed with the Z axis and the X axis.

As shown in Figures 1 and 2 , the satellite load module accuracy maintenance tooling of the present invention includes: +Z plate shape retention frame 1, load+Y shape retention triangle 2, load-Y shape retention triangle 3, platform+Y shape retention triangle 4 、Platform-Y-guaranteed triangle plate 5, hanging point 6; the plate-frame small satellite includes a load module and a platform module, the equipment of the load module is installed on the +Z structural plate and the +X structural plate, and the equipment of the platform module is installed on the -Z Structural boards and -X structural boards.

As shown in FIG. 3 , the +Z plate conformal frame 1 includes a main body frame 101, an end reinforcing beam 102, a flip interface bracket 103, and a middle reinforcing beam 104. The main body size is about 1500mm×1500mm×500mm in length×width×height; The frame 101 is a frame-plate composite structure with an opening at the +X end, and triangular small rib plates are arranged between the frame plates to increase the structural rigidity; the top surface of the +X side end is provided with two sets of installation interfaces respectively connected to the end reinforcement beam 102, There are two sets of installation interfaces on the ±Y side to connect with the 4 lifting points 6, and a set of installation interfaces on the -X side to connect with the flip interface bracket 103; the four corner positions of the bottom surface are provided with installation interfaces to connect with the load module parking tool. The bottom mounting flange is provided with mounting holes to connect with the +Z structural plate.

The end reinforcement beam 102 is an arch bridge type frame structure, and two sets of interface flanges are arranged at the bottom to connect with the main frame 101, and the middle of the end face of the +X side is provided with a flip interface plate; The interface bracket 103 is composed of a triangular support bracket and a circular interface plate, and is coaxially installed with the flip interface plate on the end reinforcing beam 102, and is provided with an interface to connect with the load module flip frame cart.

The middle reinforcing beam 104 is a comb-shaped structure, which is composed of a tubular structural beam and a number of spacers with "concave" cross-section. The height of the spacer is 170mm to meet the cable avoidance requirements on the satellite. The mounting flange of each spacer is provided with an interface and +Z Structural board connections. The middle reinforcing beam 104 is installed in the middle of the main frame 101 , and the two ends thereof are respectively connected with the frames on both sides of the main frame 101 that are parallel to each other.

型夹心结构，由对接板、后挡板中间铆接加强梁而成，主体尺寸长×宽×高约为900mm×550mm×60mm；直角位置设有三角形加强肋板增加结构刚度，加强肋板直角边尺寸200mm×150mm，既能确保结构刚度同时避免对总装操作空间造成影响，加强肋板斜边方向设置把手便于总装人员抓取；对接板安装法兰上设置一组安装接口，长边方向与+Z结构板相连，短边方向与+X结构板相连，用于载荷模块分解起吊、总装测试、运输转运及对接集成等工况下的精度保持。As shown in Figure 4, the load + Y shape retaining triangle 2 and the load - Y shape retaining triangle 3 are symmetrical along the XOZ plane, using a right angle

The type sandwich structure is formed by riveting the reinforcing beam in the middle of the butt plate and the rear baffle. The main body size is about 900mm×550mm×60mm in length×width×height; the right angle position is provided with a triangular reinforcing rib to increase the structural rigidity, and the size of the right-angle side of the reinforcing rib is 200mm ×150mm, which can not only ensure the structural rigidity but also avoid affecting the operation space of the final assembly. The reinforced rib is provided with a handle in the direction of the oblique side, which is convenient for the assembly personnel to grasp; a set of installation interfaces are set on the mounting flange of the butt plate, and the long side direction is the same as the +Z structure. The plates are connected, and the short side direction is connected to the +X structural plate, which is used to maintain the accuracy under the conditions of load module disassembly and lifting, final assembly testing, transportation and transfer, and docking integration.

型夹心结构，由对接板、后挡板中间铆接加强梁而成，主体尺寸长×宽×高约为900mm×650mm×60mm；直角位置设有三角形加强肋板增加结构刚度，加强肋板直角边尺寸200mm×150mm，既能确保结构刚度同时避免对总装操作空间造成影响，加强肋板斜边方向设置把手便于总装人员抓取；对接板安装法兰上设置一组安装接口，长边方向与-Z结构板相连，短边方向与-X结构板相连，用于平台模块结构分解、总装测试、运输转运及对接集成等工况下的精度保持；长边中部设置“U字型”转接开口避让平台设备。As shown in Figure 5, the platform + Y shape-protecting triangle plate 4 and the platform-Y shape-protecting triangle plate 5 are symmetrical along the XOZ plane, using right angles

The type sandwich structure is formed by riveting the reinforcing beam in the middle of the butt plate and the rear baffle. The main body size is about 900mm×650mm×60mm in length×width×height; the right angle position is provided with a triangular reinforcing rib to increase the structural rigidity, and the size of the right-angle side of the reinforcing rib is 200mm ×150mm, which can not only ensure the structural rigidity but also avoid the impact on the operation space of the final assembly. The reinforced rib is provided with a handle in the direction of the oblique side for easy grasping by the assembly personnel; a set of installation interfaces are arranged on the mounting flange of the butt plate, and the long side direction is the same as that of the -Z structure. The plate is connected to the -X structural plate in the direction of the short side, which is used to maintain the accuracy of the platform module structure decomposition, final assembly test, transportation and transfer, and docking integration; a "U-shaped" transfer opening is set in the middle of the long side to avoid the platform equipment.

As shown in Figures 3, 6, and 7, the shape-preserving tooling has parking and turning interfaces, which are compatible with ground tooling such as load module parking racks, load module turning racks, etc. The use requirements of working conditions, tooling versatility and scalability are good.

As shown in Figure 8, in order to improve the efficiency of satellite batch production, the satellite adopts a modular design and is assembled in parallel. First, the satellite structure is decomposed into load modules (including +Z structural plates and +X structural plates) and platform modules (including -Z structural plates and -X structural plates); after that, the general assembly, integration and testing work are carried out in parallel according to the modules; After completion, the payload module and the platform module are re-docked and integrated into the satellite as a whole. Under the conditions of structural decomposition, module assembly, and docking integration between the satellite load module and the platform module, it is necessary to focus on solving the problems of structural plate deformation and relative position accuracy maintenance. The steps for using the shape-preserving tooling are as follows (the module docking process is performed in reverse order):

First, connect the +Z plate shape-preserving frame 1 to the load module +Z structural plate, the main frame 101, the end reinforcement beams 102 and the middle reinforcement beams 104 together form a "Sun"-shaped closed force transmission structure, reducing the +Z Structural deformation under the installation of heavy load equipment on structural panels. After the above measures are taken, the relative deformation of the antenna installation area under the working conditions of satellite lifting and parking can be realized ≤ 0.2mm, which meets the requirements of antenna installation deformation;

Next, remove the satellite + Y side structural plate, replace the load + Y-shaped triangle plate 2, platform + Y-shaped triangle plate 4, remove the satellite-Y side structural plate in the same way, replace the load - Y-shaped triangle plate 3, platform- Y-preserved triangular plate 5, relying on the structural rigidity of the conformal triangular plate, is connected on the ±Y side of the load module and platform module into a stable near-triangular load-bearing structure, ensuring that the load module +Z structural plate and +X structural plate, platform module-Z The relative positioning accuracy between the structural plate and the -X structural plate also meets the structural deformation and reassembly accuracy requirements before and after the disassembly and docking of the load module and the platform module. After the above measures are taken, the verticality between the load module +Z structural plate and the +X structural plate, the platform module -Z structural plate and the -X structural plate can be maintained ≤0.2mm, and the structural plate deformation before and after the structure decomposition and docking can be maintained ≤0.2 mm, the position change in each direction is ≤ 0.2mm, which meets the requirements of relative positioning accuracy between module structure boards, satellite structure deformation and reassembly accuracy;

Third, connect the spreader at the lifting point 6, remove the structural connection between the load module and the platform module, lift and disassemble the load module in the +Z direction, connect the load module and the platform module with other tooling respectively, and carry out the final assembly work in parallel.

The shape-preserving tooling of the present invention adopts mature raw materials and processing technology. The main frame 101, the end reinforcement beam 102, the middle reinforcement beam 104 and other large load-bearing parts are welded by pipes and plates to achieve good structural rigidity and better control the deformation of the +Z structural plate; load +Y to keep the shape Triangular plate 2, load-Y-shaped triangular plate 3, platform+Y-shaped retaining triangular plate 4, platform-Y-shaped retaining triangular plate 5 and other components are used to maintain the relative positional accuracy of the structure, and the load is light. Considering the overall aesthetics and portability, pipes are used. It is riveted with the plate, and the weight of a single piece is about 3.5kg, which is convenient for the assembly personnel to install and operate.

The content not described in detail in the specification of the present invention belongs to the well-known technology of those skilled in the art.

Claims (9)

1. The utility model provides a plate posture moonlet guarantor type frock which characterized in that includes: + Z board shape-preserving frame (1), load + Y shape-preserving set square (2), load-Y shape-preserving set square (3), platform + Y shape-preserving set square (4), platform-Y shape-preserving set square (5) and hoisting point (6); the plate-frame type minisatellite comprises a load module and a platform module; the + Z plate shape-keeping frame (1) is connected with the load module + Z structural plate; after the satellite and Y side structural plates are removed, the load and Y shape-preserving set square (2) is respectively connected with the load module and Z structural plate and the load module and X structural plate, and the platform and Y shape-preserving set square (4) are respectively connected with the platform module-Z structural plate and the platform module-X structural plate; after the satellite-Y side structural plate is removed, the load-Y shape-preserving set square (3) is respectively connected with the load module + Z structural plate and the load module + X structural plate, and the platform-Y shape-preserving set square (5) is respectively connected with the platform module-Z structural plate and the platform module-X structural plate; the hoisting point (6) is arranged on the + Z plate shape-preserving frame (1) and is used for hoisting;

the + Z plate shape-preserving frame (1) comprises a main body frame (101), an end reinforcing beam (102), an overturning interface bracket (103) and a middle reinforcing beam (104);

the main body framework (101) is of a framework structure with an opening at the positive X end, triangular rib plates are arranged on the frames, the top surfaces of the two positive X side ends are respectively provided with a mounting interface to be connected with the end reinforcing beam (102), the positive Y side frames are respectively provided with two groups of mounting interfaces to be connected with the lifting points (6), and the negative X side frames are provided with one group of mounting interfaces to be connected with the overturning interface bracket (103); a mounting interface is arranged at the position of an angle 4 on the bottom surface and is connected with a load module parking tool, and a mounting hole is arranged on a mounting flange on the bottom surface and is connected with a + Z structural plate of a satellite; the middle reinforcing beam (104) is arranged in the middle of the main body frame (101), and two ends of the middle reinforcing beam are respectively connected with the frames which are parallel to each other on two sides of the main body frame (101).

2. The plate-type small satellite shape-keeping tool according to claim 1, which is characterized in that: the end reinforcing beam (102) is of an arch bridge-shaped frame structure, two groups of interface flanges are arranged at the bottom of the end reinforcing beam and are connected with the positive X end and the negative X end of the main body frame (101), and an overturning interface disc is arranged in the middle of the end face of the end reinforcing beam (102) on the positive X side.

3. The plate-type small satellite shape-keeping tool according to claim 2, characterized in that: the turnover interface bracket (103) comprises a triangular support bracket and a circular interface disc, the circular interface disc is installed on the main body frame (101) through the triangular support bracket and is coaxially installed with the turnover interface disc of the end reinforcing beam (102), and an interface is arranged on the circular interface disc and is connected with the load module turnover frame vehicle.

4. The plate-type small satellite shape-keeping tool according to claim 3, characterized in that: the middle reinforcing beam (104) is of a comb-tooth-shaped structure and comprises a tubular structural beam and a plurality of cushion blocks, and interfaces are arranged on mounting flanges of the cushion blocks and connected with a + Z structural plate of a satellite.

5. The plate-type small satellite shape-keeping tool according to claim 4, characterized in that: the load + Y shape-preserving set square (2) and the load-Y shape-preserving set square (3) are of right-angle sandwich structures and comprise butt-joint plates and rear baffles, reinforcing beams are riveted between the butt-joint plates and the rear baffles, triangular reinforcing rib plates are arranged at right angles, and handles are arranged at the right angles; and the mounting flange of the butt joint plate is provided with a mounting interface, the long edge direction is connected with the load module and the Z structural plate, and the short edge direction is connected with the load module and the X structural plate.

6. The plate-type small satellite shape-keeping tool according to claim 5, characterized in that: the platform + Y shape-preserving set square (4) and the platform-Y shape-preserving set square (5) are of right-angle sandwich structures and comprise butt joint plates and a rear baffle, reinforcing beams are riveted between the butt joint plates and the rear baffle, triangular reinforcing rib plates are arranged at right angles, and handles are arranged at the right angles; the installation interface is arranged on the installation flange of the butt joint plate, the long edge direction is connected with the platform module-Z structural plate, the short edge direction is connected with the platform module-X structural plate, and the middle part of the long edge is provided with a U-shaped switching opening.

7. The plate-type small satellite shape-keeping tool according to claim 6, characterized in that: the main body frame (101), the end reinforcing beam (102) and the middle reinforcing beam (104) are formed by welding pipes and plates.

8. The plate-type small satellite shape-keeping tool according to claim 7, characterized in that: the load + Y shape-preserving set square (2), the load-Y shape-preserving set square (3), the platform + Y shape-preserving set square (4) and the platform-Y shape-preserving set square (5) are formed by riveting pipes and plates.

9. The use method of the plate frame type minisatellite shape-keeping tool as claimed in any one of claims 1 to 8, which comprises the following steps:

connecting a + Z plate shape-preserving frame (1) with a load module + Z structural plate;

step two, dismantling the satellite and Y side structural plates, respectively connecting the load and Y shape-preserving set square (2) with a load module and a Z structural plate, and connecting the platform and Y shape-preserving set square (4) with a platform module-Z structural plate and a platform module-X structural plate; dismantling the satellite-Y side structural plate, respectively connecting the load-Y shape-preserving set square (3) with the load module + Z structural plate and the load module + X structural plate, and respectively connecting the platform-Y shape-preserving set square (5) with the platform module-Z structural plate and the platform module-X structural plate;

and step three, connecting a lifting appliance at the lifting point (6), removing the structural connection between the load module and the platform module, lifting and decomposing the load module along the + Z direction, and butting the load module and the platform module with other tools respectively.

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