Curved antenna splicing platform for spacecraft

Abstract

The present invention provides a curved antenna splicing platform for spacecraft, including a measuring device, a precision lifting platform is installed on one side of the measuring device; at least one precision lifting platform; at least one connecting seat assembly; a bottom platform; a steering system; at least one auxiliary support mechanism; a positioning and fixing device, one side of the positioning and fixing device is provided with the connecting seat assembly, the bottom of the positioning and fixing device is installed to the bottom platform, the antenna is installed on the top of the positioning and fixing device, and the positioning and fixing device is used to position and fix the antenna. The beneficial effects of the present invention: multiple high-precision curved antennas can be spliced ​​into a high-precision antenna, the antenna can be positioned and supported on the platform, and the spliced ​​antenna can be transported between workstations. The device is simple to operate and greatly improves the accuracy, efficiency and cost of antenna splicing.

Description

Technical Field

[0001] The invention belongs to the field of spacecraft, and in particular relates to a curved antenna splicing platform for spacecraft. Background Art

[0002] With the rapid development of aerospace technology, the size of satellites is getting bigger and bigger, and the antennas are also getting bigger and bigger. At this time, multiple antennas need to be spliced ​​into a large antenna, especially for the technical difficulty of splicing large-size curved antennas. In addition, since the antenna size is large after splicing, it is inconvenient to move it manually. Therefore, this application designs a high-precision curved antenna splicing platform for spacecraft to meet the requirements of high-precision curved antenna splicing. Summary of the invention

[0003] In view of this, the present invention aims to propose a curved antenna splicing platform for spacecraft to meet the requirements of high-precision curved antenna splicing.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A curved antenna splicing platform for a spacecraft, comprising:

[0006] A measuring device, a precision lifting platform is installed on one side of the measuring device, and the measuring device is used to provide a device for antenna testing and improve the adjustment accuracy and efficiency of the splicing platform;

[0007] At least one precision lifting platform, the measuring device is installed on the top of the precision lifting platform, the precision lifting platform is installed to the bottom platform, and the precision lifting platform is used for antenna force bearing and precision adjustment;

[0008] At least one connector assembly, the connector assembly being mounted to the bottom platform, the connector assembly serving as a carrier for the antenna;

[0009] A bottom platform, the top of which is provided with the connection seat assembly and the positioning and fixing device, two universal casters and two fixed casters are installed at the four corners of the bottom of the bottom platform, the bottom of the bottom platform is also provided with a connection hole for installing an auxiliary support mechanism, and two sides of the bottom platform are provided with a hanging point respectively;

[0010] Steering system, the steering system is installed at the bottom of the bottom platform, and the steering system 5 is used to control the rotation of the splicing platform;

[0011] At least one auxiliary support mechanism, the auxiliary support mechanism is installed in the connection hole of the bottom platform, and the auxiliary support mechanism is used to adjust the flatness of the bottom platform;

[0012] A positioning and fixing device, wherein the connecting seat assembly is provided on one side of the positioning and fixing device, the bottom of the positioning and fixing device is installed to the bottom platform, the antenna is installed on the top of the positioning and fixing device, and the positioning and fixing device is used to position and fix the antenna.

[0013] Furthermore, the measuring device includes a conical surface measuring tool, a sensor and a C-type measuring bracket. The conical surface measuring tool is used to install a laser tracker. The conical surface measuring tool and the bottom of the sensor are both installed on the precision lifting platform. The C-type measuring bracket is located on one side of the bottom platform.

[0014] Furthermore, the precision lifting platform includes a support seat, a precision slide and an elevated frame. The top of the support seat is a spherical structure. One end of the laser tracker target sphere is installed on the conical surface measurement tooling, and the other end is tangent to the hemisphere of the support seat. The top of the support seat is installed on the antenna, the bottom of the support seat is installed on the precision slide, the bottom of the precision slide is installed on the elevated frame, the sensor is installed on the side of the elevated frame through a bracket, and the bottom of the elevated frame is installed on the bottom platform.

[0015] Furthermore, the connecting seat assembly includes a Z-axis sliding plate, a guide rail slider assembly, a Y-axis sliding plate, a push rod screw and a connecting column. The bottom of the Z-axis sliding plate is installed to the bottom platform, and the Y-axis sliding plate is installed above the Z-axis sliding plate. The Z-axis sliding plate and the Y-axis sliding plate are both C-shaped structures. A threaded hole is opened on each of the two sides of the C-shaped structure, and the push rod screw is installed in the threaded hole. The Z-axis sliding plate is installed to the Y-axis sliding plate through the push rod screw, and the Y-axis sliding plate is installed to the guide rail slider assembly through the push rod screw. The connecting column is installed above the guide rail slider assembly, and a pin hole is opened in the middle above the connecting column, and the connecting column is connected to the antenna through the pin hole.

[0016] Furthermore, the bottom platform is formed by welding steel pipes, and the bottom platform is a grid structure.

[0017] Furthermore, the steering system includes a cross component, a steering rod, a middle rod, a block unloading stop pin and a nylon pad. The two sides of the cross component are respectively installed to the universal caster through a nylon pad. A circular hole is opened in the middle of the cross component. The cross component is connected to one end of the middle rod through the circular hole, and the other end of the middle rod is connected to the steering rod through the block unloading stop pin.

[0018] Furthermore, the auxiliary support mechanism includes a base, a baffle, a lead screw, a copper nut and a locking nut. The bottom of the base is set on the ground, and a countersunk hole is opened on the top of the base. The lead screw is placed in the countersunk hole. The base installs the lead screw to the countersunk hole through the baffle. The upper end of the lead screw is installed with a copper nut through the locking nut, and the upper end of the copper nut is installed in the mounting hole of the bottom platform.

[0019] Furthermore, the positioning and fixing device includes a step pin, a lifting seat and a long screw rod, the step pin is used to position the antenna, the step pin passes through the interface hole of the antenna and is installed in the pin hole of the connecting column, the lifting seat is used to prevent the support seat from damaging the antenna during transportation, the lifting seat can be detachably installed to the connecting column, and a threaded hole is also provided on the lifting seat, the lifting seat is installed to one end of the long screw rod through the threaded hole, and the other end of the long screw rod is installed to the antenna.

[0020] Compared with the prior art, the spacecraft curved antenna splicing platform of the present invention has the following advantages:

[0021] The spacecraft curved antenna splicing platform described in the present invention can splice multiple high-precision curved antennas into one high-precision antenna, can realize the positioning and support of the antenna on the platform, and can transfer the spliced ​​antenna between workstations. This device is simple to operate and greatly improves the accuracy, efficiency and cost of antenna splicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the antenna 8 according to an embodiment of the present invention being installed on the splicing platform;

[0025] Figure 3 This is a schematic diagram of a precision lifting platform according to an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a connecting socket assembly according to an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of a steering system according to an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the auxiliary support mechanism according to an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of the positioning and fixing device described in an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1. Measuring device; 1(a), cone measuring fixture; 1(b), sensor; 1(c), C-type measuring bracket; 2. Precision lifting platform; 2(a), support seat; 2(b), precision slide; 2(c), heightening frame; 3. Connecting seat assembly; 3(a), Z-axis sliding plate; 3(b), guide rail slider assembly; 3(c), Y-axis sliding plate; 3(d), push rod screw; 3(e), connecting column; 4. Bottom platform; 5. Steering system; 5(a), cross assembly; 5(b), steering rod; 5(c), middle rod; 5(d), block unloading stop pin; 5(e), nylon pad; 6. Auxiliary supporting mechanism; 6(a), base; 6(b), stopper; 6(c), lead screw; 6(d), copper nut; 6(e), locking nut; 7. Positioning and fixing device; 7(a), step pin; 7(b), lifting seat; 7(c), long screw; 8. Antenna; 9. Universal caster; 10. Lifting point. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0036] like Figures 1 to 7 As shown, the spacecraft curved antenna splicing platform is designed to be composed of seven parts, namely, a measuring device 1, a precision lifting platform 2, a connecting seat assembly 3, a bottom platform 4, a steering system 5, an auxiliary support mechanism 6 and a positioning and fixing device 7;

[0037] The cone measuring fixture 1(a) in the measuring device 1 is installed on the support seat 2(a). The measuring personnel fix the laser tracker target ball and one end of the cone measuring fixture 1(a), and the other end is tangent to the hemisphere of the support seat 2(a), and measure the spherical coordinates by rotation; the sensor 1(b) is installed on the side of the heightening frame 2(c) through the bracket, and the sensor 1(b) emits a laser beam to hit the antenna 8 to monitor the deformation of the antenna; the C-type measuring bracket 1(c) is an independent component, which is used to measure the coordinate value of the center of the support seat 2(a) and the test fixture for adjusting the center height of the support seat. The measuring and debugging personnel crawl on the C-type measuring bracket 1(c);

[0038] The measuring device 1 is a key component for improving the adjustment accuracy and efficiency of the high-precision curved antenna splicing platform for spacecraft. The measuring device consists of a conical surface measuring tool 1 (a), a sensor 1 (b) and a C-type measuring bracket 1 (c). First, the conical surface measuring tool 1 (a) is used to measure the spherical center coordinates of each support seat 2 (a). The inspection personnel need to manually contact the conical surface measuring tool 1 (a) and the hemisphere of the support seat 2 (a), and then rotate to measure the spherical center coordinates. This reduces the time of directly using a laser tracker to measure the ball and reduces the measurement error caused by human operation; then the measurement data is exported to the spherical center calculation software for comparison with the theoretical spherical center to calculate the spherical center of the support seat 2 (a). The height value is adjusted by the center to guide the workers to adjust the height of the support seat 2 (a). At the same time, a sensor 1 (b) is installed near the support seat 2 (a) to monitor the displacement change of the antenna (8). When the reflective surface deformation of the antenna (8) exceeds the technical requirements due to the installation of the equipment, the buzzer of the electric control box alarms, and the sensor 1 (b) displays the antenna displacement change value in real time. The antenna displacement change value is displayed in real time on the electric control box to guide the assembly process; the C-type measuring bracket 1 (c) spans the bottom platform 4. Since the support seats above are evenly arranged horizontally and vertically, the debugging personnel lie on the C-type measuring bracket 1 (c) to measure and adjust the height of the ball head made of the support. It is not allowed to touch the bottom platform during the debugging process.

[0039] Specifically, the measuring device 1, the precision lifting platform 2, the connecting seat assembly 3, the bottom platform 4, the steering system 5, the auxiliary support mechanism 6 and the positioning and fixing device 7. The main structure of this platform is welded with steel pipes. First, the auxiliary support mechanism 6 is put on the ground, and the coplanarity of all the connecting seat assemblies 3 is adjusted by adjusting the height of the screw. When the coplanarity is within a reasonable tolerance range, the conical surface measuring tool 1 (a) in the measuring device 1 is placed on the hemisphere of the supporting seat 2 (a), and a person crawls on the C-shaped measuring bracket 1 (c) to measure the spherical center coordinates of all supporting balls, and then inputs the spherical center coordinates into the calculation software to calculate the spherical center adjustment height value, and then the operator adjusts the height by the micrometer head of the rotating displacement table, and then re-measures the spherical center coordinates. If the height tolerance is within a reasonable range, no height adjustment is performed, and then Then re-measure all the sphere center coordinates and calculate the RMS of the sphere center. Since the RMS of the sphere center coordinates is within the technical requirements, the antenna can be connected to the connecting seat assembly 3 through the positioning and fixing device 7. Before the antenna needs to be transported, the positioning and fixing device 7 needs to be removed first, the antenna is lifted off the connecting seat assembly 3, the connecting seat assembly 3 is connected to the lifting seat 7 (b) in the positioning and fixing device 7, and then the antenna 8 is placed on the lifting seat 7 (b), and the long screw in the positioning and fixing device 7 is used to fix the antenna. Then one person holds the steering rod in the steering system 5 to control the direction, and multiple people push the bottom platform 4 frame to transport the antenna 8.

[0040] The precision lifting platform 2 is in direct contact with the antenna 8. The precision lifting platform 2 has load-bearing and precision adjustment functions. The precision lifting platform 2 is installed on the bottom platform 4. The precision lifting platform 2 is composed of a support seat 2 (a), a precision slide 2 (b) and an elevated frame 2 (c) from top to bottom. Since the antenna 8 is a curved surface, in order to use multiple tangent points on the precision lifting platform 2 to form the antenna 8 curved surface, the top of the support seat 2 (a) of the lifting platform is designed as a ball head. The ball head is tangent to the antenna curved surface. The size and accuracy of the ball head are determined according to the load-bearing capacity of the antenna 8 and the splicing accuracy of the antenna 8. The bottom of the support seat 2 (a) is connected to the precision slide 2 (b). The precision slide 2 (b) is composed of a guide rail slider, a push rod, an adjustment handle and a locking handle. The adjustment handle is used for height adjustment, and the locking handle is used for height locking. The bottom of the precision lifting platform is connected to the elevated frame 2 (c). Since the antenna is a curved surface, the height of the elevated frame is designed according to the height of the antenna curved surface. The bottom of the elevated frame 2 (c) is connected to the bottom platform 4;

[0041] The connecting seat assembly 3 is installed on the bottom platform 4, and the connecting seat assembly 3 is composed of a Z-direction sliding plate 3(a), a guide rail slider assembly 3(b), a Y-direction sliding plate 3(c), a top rod screw 3(d) and a connecting column 3(e). The bottom of the Z-direction sliding plate 3(a) is connected to the bottom platform 4, a group of guide rail slider assemblies 3(b) are installed on the Z-direction sliding plate 3(a), the top of the slider is connected to the Y-direction sliding plate 3(c), the top of the Y-direction sliding plate 3(c) is connected to the guide rail slider assembly 3(b), the top of the slider is connected to the connecting column 3(e), a pin hole is opened in the middle of the connecting column 3(e), and 4 threaded holes are opened around the pin hole, and the pin hole is directly connected to the antenna 8 to play a positioning role. The Z and Y sliding plates are C-shaped, with 2-M6 threaded holes on each of the two sides of the C-shaped plate. A push rod screw 3(d) is installed in the threaded hole. One end of the push rod screw 3(d) is fixed to the slide plate, and the other end is pushed against the other side of the slide plate and the lower connecting plate of the connecting column 3(e). The slide plate is moved by adjusting the length of the push rod screw 3(d), and the slide plate drives the two-dimensional adjustment of the connecting column 3(e) to achieve the adjustable connection seat. This design reduces the processing accuracy and greatly reduces the design cost. When the interface of the connecting column 3(e) is adjusted to be consistent with the interface of the antenna 8, the connection column is stopped;

[0042] The bottom platform 4 is the main load-bearing component and also the reference for establishing the measurement reference coordinate system. Therefore, the flatness requirement for the connection surface between the bottom platform 4 and the connection seat assembly 3 is relatively high. A connection hole for the auxiliary support mechanism 6 is designed under the bottom platform, and several auxiliary support mechanisms 6 are connected below. The number of auxiliary support mechanisms 6 is controlled according to the flatness requirement of the bottom platform 4. To facilitate the transportation of the antenna 8, two universal casters 9 and two directional casters are installed at the four corners of the bottom platform 4. The bottom platform 4 is the main load-bearing component. While ensuring rigidity and strength, the structure is designed as a grid structure. While facilitating transportation, it is also convenient for personnel to enter the bottom platform for testing.

[0043] The bottom platform 4 is welded with steel pipes. In order to reduce the influence of welding stress on the flatness of the bottom platform, the bottom platform 4 is heat treated after welding, and the plane and holes are processed after heat treatment. In order to facilitate the entry of the bottom platform 4, the bottom platform is designed as a grid structure to facilitate the entry and exit of personnel.

[0044] The steering system 5 is composed of a transverse component 5 (a), a steering rod 5 (b), a middle rod 5 (c), a block unloading stop pin 5 (d), a nylon pad 5 (e) and a universal caster 9 component. The steering system 5 is connected to two universal casters 9 (without a rotation radius) connected to the bottom platform. The transverse component 5 (a) is welded by two single ear pieces, two connecting pipes and a transfer block. The two single ear pieces are connected to the two universal casters 9 by screws. A round hole is opened in the middle of the connection block. The long hole in the middle of the middle rod 5 (c) is placed on the round hole in the middle of the transfer block. The middle rod 5 (c) and the connection block are connected by screws. One end of the middle rod 5 (c) is connected to the bottom platform through a screw, and the other end is connected to the steering rod 5 (b) through a block unloading stop pin 5 (d). The steering rod 5 (b) is manually swung, and the steering rod 5 (b) drives the universal caster 9 to steer. This structure is simple and the steering is flexible and convenient.

[0045] The auxiliary support mechanism 6 serves to adjust the flatness of the bottom platform 4. The number of supports is designed according to the size of the bottom platform 4. The auxiliary support mechanism 6 is composed of a base 6(a), a baffle 6(b), a lead screw 6(c), a copper nut 6(d) and a locking nut 6(e). The bottom of the base 6(a) is in direct contact with the ground. A countersunk hole is designed on the top of the base 6(a). The ball head of the lead screw 6(c) is placed in the countersunk hole. The baffle 6(b) is then used to fix the ball head to the countersunk hole of the base 6(a). The ball head can rotate at a small angle in the base 6(a) to adapt to the unevenness of the ground. The lead screw 6(c) uses a T-type self-locking lead screw. A copper nut 6(d) is installed on the lead screw. The copper nut 6(d) is a T-shaped structure. The other end of the copper nut 6(d) is in contact with the bottom platform 4. The mounting holes are connected, and the lead screw 6(c) is turned with a wrench. The lead screw 6(c) can be raised and lowered in the copper nut 6(d), thereby driving the bottom platform 4 to be raised and lowered, thereby realizing the leveling function of the bottom platform 4. In order to eliminate the gap between the lead screw 6(c) and the copper nut 6(d), a locking nut 6(e) is specially designed. When the lead screw 6(c) is adjusted into place, the distance between the locking nut 6(e) and the copper nut 6(d) needs to be adjusted to 0 to reduce the gap between the lead screw 6(c) and the copper nut 6(d).

[0046] The positioning and fixing device 7 directly positions and fixes the antenna 8. In order to solve the problem of splicing the arc antenna 8, there are high requirements for the straightness and flatness of the interface of multiple arc antennas 8. The positioning and fixing device is composed of a stepped pin 7 (a), a lifting seat 7 (b) and a long screw 7 (c). The stepped pin 7(a) is used for positioning. The stepped pin (7(a)) passes through the interface hole of the antenna 8 and is connected to the middle pin hole on the connecting column 3(e), thereby positioning and installing the antenna 8. In order to avoid damage to the antenna by the supporting seat 2(a) due to uneven ground during the transportation of the antenna 8, a lifting seat 7(b) is specially designed. During the transportation process, the stepped pin 7(a) is removed, the antenna 8 is lifted off the connecting column 3(e), and the lifting seat 7(b) is installed. The lifting seat 7(b) is installed on the connecting column 3(e) and fixed by screws. A threaded hole is opened on the lifting seat 7(b). A specially made long screw 7(c) is connected through the threaded holes on the antenna 8 and the lifting seat 7(b). The long screw 7(c) plays a fixing role during the transportation of the antenna 8.

[0047] The measuring device, precision lifting platform, connecting seat assembly, bottom platform, steering system, auxiliary support mechanism and positioning and fixing device described in the present invention can provide a supporting platform for high-precision curved antenna splicing for spacecraft, greatly improving the accuracy, efficiency and cost of antenna splicing.

[0048] The specific usage process of this implementation is:

[0049] 1) Measurement. First, measure the coplanarity of multiple connecting seat components 3. When the coplanarity does not exceed the technical requirements, establish a spherical center coordinate system. The spherical center coordinate system is established on the upper plane of the connecting seat component 3, with the pin hole in the middle of the connecting seat component 3 as the coordinate origin. After the coordinate system is established, place the measuring device 1 above the support seat 2 (a) to measure the spherical center coordinates, and then input the measured spherical center coordinate value into the spherical center calculation software. The software performs theoretical spherical center calculation based on the shape of the curved antenna, and at the same time calculates the spherical center adjustment height value of the support seat 2 (a) to guide workers to adjust the support seat height.

[0050] 2) Adjustment. Workers adjust the height of the support seat 2(a) according to the adjustment amount of the ball center calculated by the ball center software. First, workers rotate the micrometer according to the adjustment amount, rotate it to the right position and lock the locking handle. Then use the laser tracker to measure the coordinates of the ball center. Then input the coordinates of the ball center into the ball center calculation software to check whether the height value of the ball center adjustment amount is within the tolerance range. Lock the height of the support seat 2(a). After all the height adjustments of the support seat 2(a) are completed, calculate the Rms value of the ball center profile to be within the tolerance range.

[0051] 3) Installation: According to the test requirements, the antenna 8 is hoisted above the connecting base assembly 3, and the antenna 8 and the connecting base assembly 3 are positioned and connected by the step pin 7 (a). The first antenna 8 is installed first, and then other antennas 8 are installed. The antennas 8 are all positioned and connected by the step pin 7 (a);

[0052] 4) Transportation. When the antenna needs to be transported, the positioning and fixing device 7 must be removed first, and then the antenna 8 must be lifted off the connecting seat assembly 3. Then the lifting seat 7 (b) must be connected to the connecting seat assembly 3, and then the antenna must be placed on the lifting seat 7 (b). The antenna 8 must be fixed with a long screw 7 (c). Then one person holds the steering rod 5 (b) in the steering system 5 to control the direction, and multiple people push the bottom platform 4 frame to transport the antenna 8.

[0053] The splicing platform mainly involves a platform for positioning, supporting and transporting during the splicing process of spacecraft curved antennas.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A curved antenna splicing platform for spacecraft, characterized by: include: A measuring device (1), a precision lifting platform (2) is installed on one side of the measuring device (1), and the measuring device (1) is used to provide a device for antenna (8) testing and to improve the adjustment accuracy and efficiency of the splicing platform; at least one precision lifting platform (2), the measuring device (1) being installed on the top of the precision lifting platform (2), the precision lifting platform (2) being installed on the bottom platform (4), and the precision lifting platform (2) being used for bearing force and precision adjustment of the antenna (8); at least one connection seat assembly (3), the connection seat assembly (3) being mounted on the bottom platform (4), the connection seat assembly (3) serving as a carrier of the antenna (8); A bottom platform (4), the top of which is mounted the connection seat assembly (3) and the positioning and fixing device (7), two universal casters (9) and two fixed casters are mounted at the four corners of the bottom of the bottom platform (4), the bottom of the bottom platform (4) is also provided with a connection hole for installing an auxiliary support mechanism (6), and a suspension point (10) is provided on both sides of the bottom platform (4); A steering system (5), the steering system (5) being mounted to the bottom of the bottom platform (4), the steering system (5) 5 being used to control the rotation of the splicing platform; at least one auxiliary support mechanism (6), the auxiliary support mechanism (6) being installed in a connection hole of the bottom platform (4), the auxiliary support mechanism (6) being used to adjust the flatness of the bottom platform (4); A positioning and fixing device (7), wherein the connecting seat assembly (3) is provided on one side of the positioning and fixing device (7), the bottom of the positioning and fixing device (7) is mounted to the bottom platform (4), the top of the positioning and fixing device (7) is mounted with the antenna (8), and the positioning and fixing device (7) is used to position and fix the antenna (8); The measuring device (1) comprises a conical surface measuring tool (1(a)), a sensor (1(b)) and a C-type measuring bracket (1(c)), wherein the conical surface measuring tool (1(a)) is used to install a laser tracker, the bottoms of the conical surface measuring tool (1(a)) and the sensor (1(b)) are both installed on the precision lifting platform (2), and the C-type measuring bracket (1(c)) is located on one side of the bottom platform (4); The precision lifting platform (2) comprises a support seat (2(a)), a precision slide (2(b)) and an elevated frame (2(c)). The top of the support seat (2(a)) is a spherical structure. One end of the laser tracker target ball is installed on the conical surface measurement tooling (1(a)), and the other end is tangent to the hemisphere of the support seat (2(a)). The top of the support seat (2(a)) is installed on the antenna (8). The bottom of the support seat (2(a)) is installed on the precision slide (2(b)). The bottom of the precision slide (2(b)) is installed on the elevated frame (2(c)). The sensor (1(b)) is installed on the side of the elevated frame (2(c)) through a bracket. The bottom of the elevated frame (2(c)) is installed on the bottom platform (4). The connecting seat assembly (3) includes a Z-direction sliding plate (3(a)), a guide rail slider assembly (3(b)), a Y-direction sliding plate (3(c)), a top rod screw (3(d)) and a connecting column (3(e)). The bottom of the Z-direction sliding plate (3(a)) is installed on the bottom platform (4), and the Y-direction sliding plate (3(c)) is installed on the top of the Z-direction sliding plate (3(a)). The Z-direction sliding plate (3(a)) and the Y-direction sliding plate (3(c)) are both C-shaped structures, and threaded holes are respectively opened on the two sides of the C-shaped structure. The push rod screw (3(d)) is installed in the hole, the Z-direction sliding plate (3(a)) is installed to the Y-direction sliding plate (3(c)) through the push rod screw (3(d)), the Y-direction sliding plate (3(c)) is installed to the guide rail slider assembly (3(b)) through the push rod screw (3(d)), the connecting column (3(e)) is installed above the guide rail slider assembly (3(b)), a pin hole is opened in the middle of the connecting column (3(e)), and the connecting column (3(e)) is connected to the antenna (8) through the pin hole; The positioning and fixing device (7) includes a step pin (7(a)), a lifting seat (7(b)) and a long screw (7(c)). The step pin (7(a)) is used to position the antenna (8). The step pin (7(a)) passes through the interface hole of the antenna (8) and is installed in the pin hole of the connecting column (3(e)). The lifting seat (7(b)) is used to prevent the support seat (2(a)) from damaging the antenna (8) during transportation. The lifting seat (7(b)) can be detachably installed on the connecting column (3(e)). A threaded hole is also provided on the lifting seat (7(b)). The lifting seat (7(b)) is installed to one end of the long screw (7(c)) through the threaded hole, and the other end of the long screw (7(c)) is installed to the antenna (8).

2. The spacecraft curved antenna splicing platform according to claim 1, characterized in that: The bottom platform (4) is made of welded steel pipes and has a grid structure.

3. The spacecraft curved antenna splicing platform according to claim 1, characterized in that: The steering system (5) comprises a transverse component (5(a)), a steering rod (5(b)), a middle rod (5(c)), a block unloading stop pin (5(d)) and a nylon pad (5(e)). Both sides of the transverse component (5(a)) are respectively mounted to the universal caster (9) via a nylon pad (5(e)). A circular hole is provided in the middle of the transverse component (5(a)). The transverse component (5(a)) is connected to one end of the middle rod (5(c)) via the circular hole. The other end of the middle rod (5(c)) is connected to the steering rod (5(b)) via the block unloading stop pin (5(d)).

4. The spacecraft curved antenna splicing platform according to claim 1, characterized in that: The auxiliary support mechanism (6) comprises a base (6(a)), a baffle (6(b)), a lead screw (6(c)), a copper nut (6(d)) and a locking nut (6(e)). The bottom of the base (6(a)) is arranged on the ground. The top of the base (6(a)) is provided with a countersunk hole, in which the lead screw (6(c)) is placed. The base (6(a)) installs the lead screw (6(c)) to the countersunk hole through the baffle (6(b)). The upper end of the lead screw (6(c)) is installed with a copper nut (6(d)) through the locking nut (6(e)). The upper end of the copper nut (6(d)) is installed in the installation hole of the bottom platform (4).

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