Structure and method for eliminating assembly stress of tracking and aiming host unlocking device

Abstract

The invention discloses a structure and method for eliminating assembly stress of an unlocking device of a tracking and pointing host, and relates to the field of stress-free assembly of the unlocking device of the tracking and pointing host for spaceflight. The U-shaped frame is rotationally connected to a satellite cabin plate through an azimuth shaft system, and the U-shaped frame is rotationally connected with the camera main body through a pitching driving shaft system and a pitching braking shaft system; the U-shaped frame and the satellite cabin plate are fixed through the orientation unlocking device, the orientation gasket unit is located in a gap between the orientation unlocking device and the satellite cabin plate, and the second connecting bolt penetrates through the orientation unlocking device and the orientation gasket unit and is connected with the satellite cabin plate; the U-shaped frame and the camera body are fixed through the pitching unlocking device, the pitching gasket unit is located in a gap between the pitching unlocking device and the camera body, and the first connecting bolt penetrates through the pitching unlocking device and the pitching gasket unit and is connected with the camera body. And the unstressed assembly of the unlocking device is realized.

Description

Technical Field

[0001] The present application belongs to the technical field of stress-free assembly of an unlocker of a tracking and aiming host for aerospace use, and relates to a structure and method for eliminating assembly stress of an unlocker of a tracking and aiming host. Background Art

[0002] The space tracking and aiming host is used for high-precision tracking and monitoring of space targets. It is generally composed of a camera body, a two-dimensional turntable mechanism and an unlocker. The camera body is usually composed of an optoelectronic imaging, detection and laser ranging module to achieve high-definition imaging, angle measurement and ranging of space targets. The two-dimensional turntable mechanism is composed of a U-shaped frame, an azimuth axis system, a pitch drive axis system and a pitch brake axis system. The azimuth axis system, the pitch drive axis system and the pitch brake axis system are connected to the U-shaped frame through high-precision bearings. The two sides of the middle of the camera body are fixedly connected with the pitch drive axis system and the pitch brake axis system on the two-dimensional turntable mechanism through stop flanges to ensure that the relative position relationship of the camera body remains unchanged when it rotates around the pitch axis of the two-dimensional turntable mechanism; the azimuth axis system is fixedly connected to the satellite cabin plate by its own flange through screws, and the U-shaped frame, the pitch axis system and the camera body are fixedly connected to the azimuth axis system through high-precision bearings and rotate around the azimuth axis. The two sides of the lower part of the camera body are fixed to the middle of the U through the pitch unlocker, and the four corners of the bottom of the U-shaped frame are fixed to the satellite cabin plate through the azimuth unlocker. The unlocker ensures that the entire tracking and aiming host is locked with the satellite in the azimuth and pitch axes during the active launch phase, playing the role of locking and supporting. After entering orbit, the unlocker is unlocked and separated into two parts, releasing the rotational freedom of the pitch and azimuth axes of the tracking and aiming host, so that the tracking and aiming host has the function of two-axis rotation in orbit.

[0003] When the unlocker is installed, due to processing and assembly errors, there are non-parallel connection surfaces and slight gaps at the flange end faces where the unlocker flange surface is connected to the camera body and at the connection between the unlocker flange and the satellite cabin plate flange. If the flange screws are tightened forcibly, assembly stress will exist. The assembly stress at the pitch unlocker will cause the main mirror shape of the camera body to degrade, thereby weakening the performance of the camera body. The assembly stress at the azimuth unlocker will damage the bearings of the turntable azimuth axis system, thereby affecting the stability of the axis system (orthogonality) of the two-dimensional turntable mechanism.

[0004] The traditional method is to measure the value of the tiny gap with a feeler gauge, and then process a gasket of corresponding thickness to fill the tiny gap. However, the feeler gauge can only measure the minimum gap of 0.02mm. It cannot measure smaller gaps and wedge-shaped gaps, so it cannot completely fill the tiny gap, which will result in assembly stress after the gasket is added and the unlocker is installed. The gasket needs to be processed according to the measured thickness, and the assembly efficiency is low. Patent publication number CN108121048A discloses an adaptive assembly error and launch active vibration isolation device for a space remote sensor. By setting a series of gaskets, bushings and bolts between the remote sensor flange and the satellite flange, the vibration reduction and isolation effect of the remote sensor in the launch active section is enhanced, and the problem of the limited vibration reduction and isolation capacity of the damping truss on the remote sensor in the launch active section is solved; by designing a series of gaskets and bushings, the flatness error of the remote sensor flange and the satellite flange is reduced, and the influence of the installation stress on the main mirror shape of the remote sensor is reduced, which makes up for the defect that the damping truss cannot meet the assembly accuracy requirements of the remote sensor and the satellite platform. This method requires the processing of gaskets according to measured data during assembly, which is inefficient and cannot eliminate installation stress. It is not suitable for stress-free assembly of unlockers. Patent publication number CN202089198U discloses a caliper with a parallelism compensation structure. By adopting a design in which a spherical convex gasket cooperates with a spherical concave arc surface, the error of the parallelism of the IS seat is effectively compensated, which plays a role in compensating positioning. Although this method eliminates the parallelism error of the IS seat, it cannot make up for the small gap and cannot quantify the offset caused by the assembly. It is not suitable for stress-free assembly of unlockers. Summary of the invention

[0005] The technical problem solved by the present application is: to overcome the deficiencies of the prior art, to provide a structure and method for eliminating the assembly stress of the tracking and aiming host unlocker, to utilize the structural form of the pitch gasket unit and the azimuth gasket unit to compensate for the non-parallelism and small gap between the pitch unlocker flange surface and the camera body connection surface and the azimuth unlocker flange surface and the satellite cabin board mating surface, and to dynamically monitor, adjust and control the relative displacement generated by the unlocker installation by combining the metering method, so as to achieve stress-free assembly of the unlocker. On the one hand, this structure and method eliminates the influence of the pitch unlocker installation stress on the main mirror shape of the camera body, thereby ensuring the stability of the camera performance. On the other hand, it avoids the assembly stress generated during the assembly of the azimuth unlocker and the satellite cabin board from damaging the bearing of the two-dimensional turntable mechanism, ensures the stability of the two-dimensional turntable mechanism axis system (orthogonality) during the tracking and aiming host assembly and launch phase, and improves the product assembly efficiency and safety.

[0006] The technical solutions provided by this application are as follows:

[0007] A structure for eliminating the assembly stress of a tracking and aiming host unlocker, comprising a pitch gasket unit and an azimuth gasket unit; a U-shaped frame is rotatably connected to a satellite cabin board through an azimuth axis system, and the U-shaped frame is rotatably connected to a camera body through a pitch drive axis system and a pitch brake axis system; the U-shaped frame and the satellite cabin board are fixed through an azimuth unlocker, the azimuth gasket unit is located in a gap between the azimuth unlocker and the satellite cabin board, a second connecting bolt passes through the azimuth unlocker and the azimuth gasket unit and is connected to the satellite cabin board; the U-shaped frame and the camera body are fixed through a pitch unlocker, and the pitch gasket unit is located between the pitch unlocker and the camera body The first connecting bolt passes through the pitch unlocker and the pitch gasket unit and is connected to the camera body; the pitch gasket unit includes a pitch spherical surface combination structure and a pitch thickness adjustment structure, the pitch spherical surface combination structure includes a pitch ball head gasket and a pitch ball socket gasket, the convex spherical surface of the pitch ball head gasket matches with the concave spherical surface of the pitch ball socket gasket, and the opposite sides of the pitch ball head gasket and the pitch ball socket gasket are both planes; the pitch thickness adjustment structure includes two pitch wedge gaskets, and the inclined surfaces of the two pitch wedge gaskets match; the first connecting bolt passes through the pitch ball head gasket, the pitch ball socket gasket and the two pitch wedge gaskets.

[0008] The pitch ball head gasket and the pitch ball socket gasket are both provided with a pitch positioning hole for the first connecting bolt to pass through, and the diameter of the pitch positioning hole is larger than the outer diameter of the first connecting bolt.

[0009] Each of the pitch wedge-shaped gaskets is provided with a first long strip groove for the first connecting bolt to pass through along the direction of its own thickness change, and the first connecting bolt matches the width of the first long strip groove; when the pitch wedge-shaped gasket is pushed, the distance between the planes of the two pitch wedge-shaped gaskets changes.

[0010] The elevation spherical surface combination structure is located on a side of the elevation thickness adjustment structure away from the camera body.

[0011] The azimuth gasket unit includes an azimuth spherical surface combination structure and an azimuth thickness adjustment structure; the azimuth spherical surface combination structure includes a pyrotechnic base and an azimuth ball head gasket, two ends of the pyrotechnic base are respectively provided with a bottom flange and a connecting plane, the connecting plane is used to connect with the azimuth unlocker, the other end of the azimuth unlocker is connected to the U-shaped frame, the second connecting bolt passes through the bottom flange, the azimuth ball head gasket and the azimuth thickness adjustment structure and is connected to the satellite cabin plate, the bottom flange is provided with a plurality of through holes for the second connecting bolt to pass through, the surface of the bottom flange at one end of the through hole and facing the satellite cabin plate is a concave spherical surface, the convex spherical surface of the azimuth ball head gasket matches the concave spherical surface position of the bottom flange, and the other side of the azimuth ball head gasket is a plane;

[0012] The azimuth thickness adjustment structure comprises two azimuth wedge-shaped gaskets, and the inclined surfaces of the two azimuth wedge-shaped gaskets are matched.

[0013] The azimuth unlocker includes an upper unit and a lower unit connected to each other, and pyrotechnics are partially built in between the upper unit and the lower unit to separate the upper unit and the lower unit after firing, connecting ears are fixedly connected to both sides of the upper unit, and a connecting flange is connected to the outside of the lower unit; the connecting ears are fixedly connected to the U-shaped frame; a U-shaped recess is provided on one side of the pyrotechnic base, the U-shaped recess is located in the middle position of the connecting plane, the lower unit is clamped in the U-shaped recess, and the connecting flange is located on the side of the connecting plane away from the bottom flange, and the connecting flange of the azimuth unlocker is in contact with the connecting plane and is fixed by screws.

[0014] There are four azimuth unlockers, which are respectively located on both sides of the azimuth axis system and are distributed in a rectangular shape.

[0015] The two ends of the U-shaped frame are located on both sides of the camera body. Two pitch unlockers are provided. The two pitch unlockers are respectively connected to the two side surfaces of the camera body facing the two ends of the U-shaped frame.

[0016] An assembly method of a structure for eliminating assembly stress of an unlocking device of a tracking and aiming host, comprising:

[0017] S1: The azimuth unlocker is matched and fixed with the pyrotechnic base to obtain the azimuth unlocker component;

[0018] S2: After the U-shaped frame is assembled with the camera body, the U-shaped frame is rotatably connected to the satellite cabin plate through the azimuth axis system, and the azimuth unlocking device component of step S1 is installed in conjunction with the U-shaped frame and fastened with screws to complete the installation of the four sets of azimuth unlocking device components;

[0019] S3: Install one azimuth ball head gasket and two azimuth wedge gaskets on each concave spherical surface of each pyrotechnic base, screw in the second connecting bolt, and do not tighten the second connecting bolt to complete the preliminary connection and installation between the pyrotechnic base and the satellite cabin plate;

[0020] S4: Repeat step S3 to complete the preliminary connection and installation of the remaining three sets of azimuth unlocking device components and the satellite cabin panel;

[0021] S5: Fit and fix the pitch unlocker to the inner side of the U-shaped frame, install the pitch ball head gasket, pitch ball socket gasket and two pitch wedge gaskets in the gap between the pitch unlocker and the camera body in sequence, and screw in the first connecting bolt. The first connecting bolt is not tightened, and the preliminary connection and installation of the pitch unlocker on the camera body side is completed;

[0022] S6: Repeat step S5 to complete the preliminary connection and installation of the pitch unlocker on the other side of the camera body;

[0023] S7: The positions where the satellite cabin board is connected to the four azimuth unlockers are marked as 1, 3, 2 and 4 in sequence, where 1 and 2 are a group of diagonal positions, and 3 and 4 are a group of diagonal positions; a standard universal magnetic base is installed at diagonal positions 1 and 2 on the satellite cabin board, a micrometer is installed on the base, and the posture of the standard universal magnetic base is adjusted so that the needle of the micrometer contacts the first local plane 10c of the U-shaped frame. Similarly, the needle of another micrometer contacts the second local plane 10d, and the readings of the two micrometers are read and recorded respectively, which are recorded as X1 and X2;

[0024] S8: Adjust the three paired azimuth wedge-shaped gaskets of the pyrotechnic base at diagonal positions 1 and 2, so that the azimuth wedge-shaped gaskets fill and squeeze the azimuth installation gap between the pyrotechnic base and the satellite cabin plate, and simultaneously observe the two dial gauge readings in step S7 to ensure that the values ​​are within the range of X1±0.003 and X2±0.003;

[0025] S9: Repeat steps S7 and S8 to complete the filling and tightening of the three sets of paired azimuth wedge gaskets at diagonal positions 3 and 4, and ensure that the values ​​of the dial gauge are within the range of X3±0.003 and X4±0.003; finally, tighten the second connecting bolts in the order of positions 1, 2, 3, and 4 to complete the installation of the azimuth unlocker;

[0026] S10: Remove the standard universal magnetic gauge base and micrometer used in steps S7, S8, and S9, and place two sets of gauge bases and micrometers on the bottom plane 10j of the U-shaped frame, respectively adjust the standard universal magnetic gauge base so that the needle of the micrometer contacts the two planes on both sides of the camera body, and read and record the readings of the left and right micrometers at this time, which are recorded as Y1 and Y2;

[0027] S11: respectively adjust the paired pitch wedge-shaped gaskets in the left and right pitch unlockers to fill and tighten the pitch installation gap between the camera body and the pitch unlocker, and at the same time observe the two micrometer readings in step S10 to ensure that the values ​​at this time are within the range of Y1±0.003 and Y2±0.003, and finally tighten the first connecting bolt.

[0028] Aiming at the problem that the assembly stress existing in the assembly process of the above unlocker causes the main mirror of the camera body to deteriorate, causes damage to the bearing of the two-dimensional turntable mechanism, and affects the stability of the axis system (orthogonality) of the two-dimensional turntable mechanism. The present invention designs a structure for eliminating the assembly stress of the unlocker of the tracking and aiming host, and proposes an assembly method. The structure consists of a ball head gasket, a ball socket gasket, a wedge gasket and a pyrotechnic base. When the unlocker is assembled, one end of the pitch unlocker is fixedly connected to the U-shaped frame of the tracking and aiming host by screws through the flange hole, and a certain width gap is left between the flange surface of the other end and the flange surface of the camera body bracket. This gap is flexibly adapted and filled by the ball head gasket, the ball socket gasket and the wedge gasket, and then the rigid connection of the azimuth unlocker is achieved by screws. One end of the azimuth unlocker is fixedly connected to the U-shaped frame of the tracking and aiming mainframe by screws through the flange hole, and the flange surface of the other end is fixedly connected to the flange surface of the pyrotechnic base. A certain width gap is left between the end surface of the other side of the pyrotechnic base and the satellite cabin board surface. This gap is filled with flexible adaptation by ball head gaskets and wedge-shaped gaskets, and then the azimuth unlocker is rigidly fixed by screws. Then, the relative displacement between the U-shaped frame and the camera body (or satellite cabin board) generated during the assembly of the unlocker is dynamically monitored and adjusted by the meter method, so as to achieve stress-free assembly of the unlocker. On the one hand, this structure and method eliminates the influence of the installation stress of the pitch unlocker on the main mirror shape of the camera body, thereby ensuring the stability of the camera performance. On the other hand, it avoids the damage of the two-dimensional turntable mechanism bearing during the assembly of the azimuth unlocker and the satellite cabin board, ensures the stability of the two-dimensional turntable mechanism axis system (orthogonality) during the assembly and launch phases of the tracking and aiming mainframe, improves the product assembly efficiency and safety, and ultimately ensures the smooth completion of the model development task.

[0029] Compared with the prior art, the structure and method for eliminating the assembly stress of the tracking and aiming host unlocker according to the present invention have beneficial technical effects, including:

[0030] 1. The structure and method of the present invention utilizes the structural form of the pitch shim unit and the azimuth shim unit during the assembly of the tracking and aiming host unlocker, and combines the micrometer to dynamically monitor, adjust and control the relative displacement generated by the installation of the unlocker, so as to achieve stress-free assembly of the unlocker. On the one hand, this structure and method eliminates the influence of the installation stress of the pitch unlocker on the main mirror shape of the camera body, ensuring the stable performance of the camera. On the other hand, it avoids the assembly stress generated during the assembly of the azimuth unlocker and the satellite cabin plate from damaging the bearing of the two-dimensional turntable mechanism, ensuring the stability of the axis system (orthogonality) of the two-dimensional turntable mechanism during the assembly and launch phases of the tracking and aiming host, and improving the assembly efficiency and safety of the product.

[0031] 2. The structure of the present invention utilizes the structural form of a ball head gasket, a ball socket gasket and a wedge-shaped gasket to compensate for the non-parallelism and small gap between the flange surface of the pitch unlocker and the connecting surface of the camera body and between the flange surface of the azimuth unlocker and the matching surface of the satellite cabin plate;

[0032] 3. In the structure of the present invention, the integrated structural form of the three concave spherical surfaces on the pyrotechnic base provides the cooperation of three ball head gaskets, reduces the number of ball socket gaskets, and improves the connection stiffness and support stability of the azimuth unlocker. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The left picture is Figure 7 The enlarged image of point C in the middle, the right image is Figure 7 The enlarged view of D;

[0034] Figure 2 It is a schematic diagram of the pyrotechnic base structure of the present invention;

[0035] Figure 3 Schematic diagram of the gasket structure, wherein a is a schematic diagram of a ball head gasket, b is a schematic diagram of a ball socket gasket, and c is a schematic diagram of a wedge-shaped gasket;

[0036] Figure 4 A schematic diagram of the installation object unlocker feature;

[0037] Figure 5 This is a schematic diagram of the assembly structure of the pyrotechnic base and the unlocker;

[0038] Figure 6 This is a schematic diagram of the aiming host without an unlocker installed;

[0039] Figure 7 This is a schematic diagram of the overall composition of the tracking host after the unlocker is installed;

[0040] Figure 8 To indicate the intention after the position unlocker is installed;

[0041] Fig. 9 Indicate intention for the pitch unlock.

[0042] Description of the reference numerals: 1, camera body; 1b, camera flange; 1c, plane; 2, two-dimensional turntable mechanism;

[0043] 3. Unlocker; 31. Azimuth unlocker; 312. Upper unit; 3c. Connecting lug; 311. Lower unit; 3a. Connecting flange; 313. Second connecting bolt; 32. Pitch unlocker; 321. First connecting bolt;

[0044] 4. Satellite cabin panel;

[0045] 5. pyrotechnic base; 5b. connection plane; 5a. bottom flange;

[0046] 61. Azimuth ball head gasket; 62. Azimuth wedge gasket;

[0047] 71. Pitch ball head gasket; 72. Pitch ball socket gasket; 73. Pitch wedge gasket;

[0048] 9. Azimuth axis system; 10. U-shaped frame; middle flange 10a; four corner flanges 10b; first local plane 10c; second local plane 10d; bottom plane 10j;

[0049] 11. Pitch drive shaft system; 12. Pitch axis; 13. Pitch brake shaft system; 14. High-precision bearing; 15. Azimuth axis; 16. Standard universal magnetic base; 17. Micrometer. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the present invention clearer, the structure and method for eliminating the assembly stress of the tracking and aiming host unlocker according to the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] This embodiment discloses a structure for eliminating the assembly stress of the tracking host unlocker, such as Figure 1 and Figure 7 As shown, it includes a pitch gasket unit and an azimuth gasket unit, which are used in the pitch axis and azimuth axis locking structure of the workpiece tracking host connected to the satellite cabin plate 4.

[0052] like Figure 7 As shown, the workpiece tracking and aiming host is composed of a two-dimensional turntable mechanism 2, a camera body 1 and an unlocker 3, and the unlocker 3 includes an azimuth unlocker 31 and a pitch unlocker 32.

[0053] The two-dimensional turntable mechanism 2 is composed of a U-shaped frame 10, an azimuth axis system 9, a pitch drive axis system 11 and a pitch brake axis system 13. The azimuth axis system 9, the pitch drive axis system 11 and the pitch brake axis system 13 are rotatably connected to the U-shaped frame 10 through high-precision bearings 14. The rotation axes of the pitch drive axis system 11 and the pitch brake axis system 13 are colinear and form a pitch axis 12. The rotation axis of the azimuth axis system 9 is perpendicular to the rotation axis of the pitch drive axis system 11. The azimuth axis system 9 is rotatably connected to the satellite cabin board 4, so that the U-shaped frame 10 is rotatably connected to the satellite cabin board 4 through the azimuth axis system 9. The two ends of the U-shaped frame 10 are located on both sides of the camera body 1. The two sides of the camera body 1 are rotatably connected to the U-shaped frame 10 through the pitch drive axis system 11 and the pitch brake axis system 13. The camera body 1 can rotate relative to the U-shaped frame 10 around the axis of the pitch drive axis system 11. During the launch phase, the camera body 1 is fixedly connected to the U-shaped frame 10 through the pitch unlocker 32, thereby locking the pitch axis 12. The U-shaped frame 10 is fixedly connected to the pyrotechnic base 5 through the azimuth unlocker 31, and then the pyrotechnic base 5 is fixedly connected to the satellite cabin board 4, and finally the azimuth axis 15 is locked. After the launch, the pyrotechnics in the azimuth unlocker 31 and the pitch unlocker 32 explode, and the azimuth unlocker 31 and the pitch unlocker 32 are disconnected, thereby unlocking the azimuth axis 15 and the pitch axis 12.

[0054] like Figure 4 , Figure 6 and Figure 7 As shown, the pitch unlocker 32 is used for connecting and locking the pitch axis between the camera body 1 and the two-dimensional turntable mechanism 2. The azimuth unlocker 31 is used for connecting and locking the azimuth axis between the two-dimensional turntable mechanism 2 and the satellite cabin board 4. Four azimuth unlockers 31 are provided, and the four azimuth unlockers 31 are respectively located on both sides of the azimuth axis system 9, and the four azimuth unlockers 31 are distributed in a rectangular shape.

[0055] The pitch unlocker 32 includes an upper unit 312 and a lower unit 311 connected to each other, and a pyrotechnic device is built in between the upper unit 312 and the lower unit 311 to separate the upper unit 312 and the lower unit 311 after firing. The upper unit 312 is fixedly connected with connecting ears 3c on both sides, and the lower unit 311 is connected with a connecting flange 3a on the outside. The connecting ears 3c of the pitch unlocker 32 are fixedly connected to the middle flange 10a connected to the inner side of the U-shaped frame 10, and the camera flange 1b is fixedly connected to both sides of the camera body 1. A pitch gasket unit is arranged between the connecting flange 3a of the pitch unlocker 32 and the camera flange 1b, and the first connecting bolt passes through the connecting flange 3a of the pitch unlocker 32 and the pitch gasket unit in sequence and is connected to the camera flange 1b.

[0056] like Figure 1 , Figure 3 and Figure 4As shown, the pitch gasket unit includes a pitch ball head gasket 71, a pitch ball socket gasket 72 and two pitch wedge gaskets 73. The first connecting bolt passes through the pitch ball head gasket 71, the pitch ball socket gasket 72 and the two pitch wedge gaskets 73 in sequence. The plane of the pitch ball head gasket 71 cooperates with the connecting flange of the pitch unlocker 32, the convex spherical surface of the pitch ball head gasket 71 cooperates with the concave spherical surface of the pitch ball socket gasket 72, the plane of the pitch ball socket gasket 72 cooperates with the plane of one pitch wedge gasket 73, the inclined surfaces of the two pitch wedge gaskets 73 cooperate, and the plane of the other pitch wedge gasket 73 cooperates with the camera flange. The angles between the inclined surfaces and the planes of the two pitch ball socket gaskets 72 are consistent, and the angles meet the requirement that the two pitch ball socket gaskets 72 can be self-locked when the first connecting bolts are tightened. The pitch ball head gasket 71 and the pitch ball socket gasket 72 are both provided with a pitch positioning hole for the first connecting bolt to pass through, and the diameter of the pitch positioning hole is larger than the outer diameter of the first connecting bolt, so that there is a gap between the pitch ball head gasket 71 and the pitch ball socket gasket 72 and the first connecting bolt. When the relative surfaces between the connecting flange of the pitch unlocker 32 and the camera flange are not parallel, the spherical surfaces formed by the convex spherical surface and the concave spherical surface between the pitch ball head gasket 71 and the pitch ball socket gasket 72 can be relatively rotated until the planes of the pitch ball head gasket 71 and the pitch ball socket gasket 72 can be rotated to the planes of the connecting flange of the pitch unlocker 32 and the camera flange, thereby accurately compensating for the non-parallelism between the connecting flange of the unlocker body and the camera flange. Each pitch wedge gasket 73 is provided with a first long strip groove for the first connecting bolt to pass through along the direction of its own thickness change, so that when the pitch wedge gasket 73 is pushed, the distance between the planes of the two pitch wedge gaskets 73 becomes larger or smaller, thereby accurately compensating for the different sizes of gaps between the connecting flange of the unlocker body and the camera flange caused by processing errors, etc.

[0057] The structure of the azimuth unlocker 31 is the same as that of the pitch unlocker 32. The connecting lugs 3c of the azimuth unlocker 31 are fixedly connected to the four corner flanges 10b of the U-shaped frame 10, and the connecting flange 3a of the azimuth unlocker 31 is connected to the satellite cabin board 4 and an azimuth gasket unit is provided.

[0058] like Figure 2 and Figure 5As shown, the azimuth gasket unit includes a pyrotechnic base 5, an azimuth ball head gasket 61 and an azimuth wedge gasket 62. The two ends of the pyrotechnic base 5 are respectively provided with a bottom flange 5a and a connecting plane 5b. A U-shaped recess is provided on one side of the pyrotechnic base 5, and the U-shaped recess is located in the middle of the connecting plane 5b. The lower unit of the azimuth unlocker 31 is clamped in the U-shaped recess, and the connecting flange of the azimuth unlocker 31 is located on the side of the connecting plane 5b away from the bottom flange 5a, and the connecting flange 3a of the azimuth unlocker 31 is in contact with the connecting plane 5b and fixed by screws; the azimuth ball head gasket and the azimuth wedge gasket are arranged between the bottom flange 5a of the pyrotechnic base 5 and the satellite cabin plate 4. The bottom flange 5a is provided with a plurality of through holes for the second connecting bolts to pass through. In this embodiment, each bottom flange 5a has three through holes. The surface of the bottom flange 5a at one end of the through hole and facing the satellite cabin board 4 is a concave spherical surface. Each second connecting bolt passes through the through hole of the bottom flange 5a, an azimuth ball head gasket 61 and two azimuth wedge-shaped gaskets 62 in sequence and is connected to the satellite cabin board 4. The convex spherical surface of the azimuth ball head gasket 61 matches with the concave spherical surface of the bottom flange 5a surface, the plane on the other side of the azimuth ball head gasket 61 matches with the plane of one azimuth wedge-shaped gasket 62, the planes of the two azimuth wedge-shaped gaskets 62 match, and the plane of the other azimuth wedge-shaped gasket 62 matches with the surface of the satellite cabin board 4. The azimuth ball head gasket 61 is provided with an azimuth positioning hole for the second connecting bolt to pass through, and the aperture of the azimuth positioning hole is larger than the diameter of the second connecting bolt. The azimuth wedge-shaped gasket 62 is provided with a second long strip groove for the second connecting bolt to pass through along the direction of its thickness change.

[0059] like Figure 7 As shown, during assembly, one end of the pitch unlocker 32 is fixedly connected to the U-shaped frame 10 by screws through the connecting lug 3c, and a certain width of pitch installation gap 18 is formed between the connecting flange 3a at the other end of the pitch unlocker 32 and the camera flange 1b connected to the side of the camera body 1. The pitch installation gap 18 is flexibly adapted and filled by the pitch gasket unit, and then connected by the first connecting bolt. One end of the azimuth unlocker 31 is fixedly connected to the U-shaped frame 10 by screws through the connecting lug 3c, and the connecting flange 3a at the other end of the azimuth unlocker 31 is fixedly connected to the connecting plane 5b of the pyrotechnic base 5. There is a certain width of azimuth installation gap 19 between the bottom flange 5a at the other end of the pyrotechnic base 5 and the satellite cabin board 4. The azimuth installation gap 19 is flexibly adapted and filled by the azimuth gasket unit, and then the pyrotechnic base 5 and the satellite cabin board 4 are rigidly connected by the second connecting bolt.

[0060] like Figure 8 and Fig. 9 As shown, the stress-free assembly process of the unlocker is as follows:

[0061] S1: The azimuth unlocker 31 cooperates with the pyrotechnic base 5 and is fixedly connected as a whole by screws to obtain azimuth unlocker components, a total of four groups;

[0062] S2: After the two-dimensional turntable mechanism 2 and the camera body 1 are assembled, the two-dimensional turntable mechanism 2 is rotatably connected to the satellite cabin board 4 through the azimuth axis system 9. Then, the azimuth unlocking device components installed in step S1 are matched with the U-shaped frame 10 and fastened with screws to complete the installation of the four sets of azimuth unlocking device components.

[0063] S3: Then, an azimuth ball head gasket 61 and two azimuth wedge gaskets 62 are respectively installed at each concave spherical surface of the pyrotechnic base 5 in each set of azimuth unlocking device components, and then the second connecting bolt is screwed in. The second connecting bolt is not tightened, and the preliminary connection and installation between the three concave spherical surfaces of the pyrotechnic base 5 and the satellite cabin panel 4 are completed.

[0064] S4: Repeat step S3 to complete the preliminary connection and installation of the remaining three sets of azimuth unlocker components and the satellite cabin panel 4.

[0065] S5: Install the connection ear 3c of the pitch unlocker 32 to match the inner side of the U-shaped frame 10 and fasten it with screws. The pitch ball head gasket 71, the pitch ball socket gasket 72 and the two pitch wedge-shaped gaskets 73 are sequentially installed in the gap between the connection flange 3a of the pitch unlocker 3 and the camera flange 1b of the camera body 1, and the first connection bolt is screwed in. The first connection bolt is not tightened, and there are two places in total (the pitch unlocker 33 on the right side has two connection flanges 3a on the upper and lower sides, corresponding to the two first connection bolts on the right side), completing the preliminary connection and installation of the right pitch unlocker 32.

[0066] S6: Repeat step S5 to complete the preliminary connection and installation of the left pitch unlocker 32.

[0067] S7: Figure 8 As shown, the positions where the satellite cabin board 4 is connected to the four azimuth unlockers 31 are marked 1, 3, 2 and 4 in sequence, where 1 and 2 are a group of diagonal positions, and 3 and 4 are a group of diagonal positions. The operator places a standard universal magnetic base 16 near the diagonal positions 1 and 2 on the satellite cabin board 4, installs a micrometer 17 on the base, adjusts the base posture so that the needle of the micrometer 17 contacts the first local plane 10c of the U-shaped frame 10, and similarly, makes the needle of the other micrometer 17 contact the second local plane 10d, and reads and records the readings of the two micrometers at this time, which are recorded as X1 and X2.

[0068] X1 and X2 are respectively initial values ​​of the positions of the first local plane 10c and the second local plane 10d of the U-shaped frame 10 when the second connecting bolt is not tightened.

[0069] S8: Adjust the three paired azimuth wedge gaskets 62 of the pyrotechnic base 5 at the diagonal positions 1 and 2 so that the azimuth wedge gaskets 62 fill and tighten the azimuth installation gap 19 between the pyrotechnic base 5 and the satellite cabin panel 4, and simultaneously observe the readings of the two micrometers 17 in step S7 to ensure that the values ​​are within the range of X1±0.003 and X2±0.003 (i.e., ensure that the positional runout of the first local plane 10c and the second local plane 10d is within ±0.003).

[0070] S9: Repeat steps S7 and S8 to complete the filling and tightening of the three paired azimuth wedge-shaped gaskets 62 at diagonal positions 3 and 4 (at this time, the needles of the two micrometers 17 are in contact with the first local plane 10e and the second local plane 10f of the U-shaped frame 10, respectively), and ensure that the values ​​of the micrometers are within the range of X3±0.003 and X4±0.003. Finally, tighten the second connecting bolts in the order of positions 1, 2, 3, and 4 to complete the installation of the azimuth unlocker 31.

[0071] S10: Then remove the dial holder and micrometer 17 used in steps S7, S8, and S9, and place two sets of dial holders and micrometer 17 on the bottom plane 10j of the U-shaped frame 10. Adjust the dial holders so that the needles of the micrometer 17 touch the two planes 1c on both sides of the camera body 1, read and record the readings of the two micrometers on the left and right at this time, and record them as Y1 and Y2.

[0072] S11: Adjust the paired pitch wedge-shaped gaskets 73 (two groups on the left and right, four groups in total) in the pitch unlockers 32 on the left and right sides respectively, so that the paired pitch wedge-shaped gaskets 73 fill and squeeze the pitch installation gap 18 between the camera flange 1b and the connecting flange 3a of the pitch unlocker 32, and at the same time observe the readings of the two micrometers 17 in step S10 to ensure that the values ​​at this time are within the range of Y1±0.003 and Y2±0.003. Finally, tighten the first connecting bolt to complete the fixed connection between the pitch unlocker 32 and the camera body 1.

[0073] According to the structure and method for eliminating the assembly stress of the tracking and aiming host unlocker of the present invention, the structure of the pitch shim unit and the azimuth shim unit is disclosed, as well as the method of dynamically monitoring and adjusting the relative displacement generated by the installation of the unlocker in combination with the micrometer. It has been successfully used for the assembly of various types of unlockers. During the assembly process, this structure and method, on the one hand, eliminates the influence of the installation stress of the pitch unlocker on the main mirror shape of the camera body, thereby ensuring the stability of the camera performance. On the other hand, it avoids the assembly stress generated during the assembly of the azimuth unlocker and the satellite cabin plate from damaging the bearing of the two-dimensional turntable mechanism, ensuring the stability of the axis system (orthogonality) of the two-dimensional turntable mechanism during the assembly and launch phase of the tracking and aiming host, and improving the assembly efficiency and safety of the product.

[0074] The contents not described in detail in this application specification belong to the common knowledge of those skilled in the art.

[0075] The present application is described in detail above in conjunction with specific implementation methods and exemplary examples, but these descriptions cannot be understood as limiting the present application. Those skilled in the art understand that, without departing from the spirit and scope of the present application, a variety of equivalent replacements, modifications or improvements can be made to the technical solution of the present application and its implementation methods, all of which fall within the scope of the present application. The scope of protection of the present application shall be subject to the attached claims.

Claims

1. A structure for eliminating the assembly stress of the unlocking device of the tracking and aiming host, characterized in that: It includes a pitch shim unit and an azimuth shim unit; The U-shaped frame (10) is rotatably connected to the satellite cabin board (4) via an azimuth axis system (9), and the U-shaped frame (10) is rotatably connected to the camera body (1) via a pitch drive axis system (11) and a pitch brake axis system (13); the U-shaped frame (10) and the satellite cabin board (4) are fixed via an azimuth unlocker (31), the azimuth gasket unit is located in the gap between the azimuth unlocker (31) and the satellite cabin board (4), and the second connecting bolt passes through the azimuth unlocker (31) and the azimuth gasket unit and is connected to the satellite cabin board (4); the U-shaped frame (10) and the camera body (1) are fixed via a pitch unlocker (32), the pitch gasket unit is located in the gap between the pitch unlocker (32) and the camera body (1), and the first connecting bolt passes through the pitch unlocker (32) and the pitch gasket unit and is connected to the camera body (1); The pitch gasket unit comprises a pitch spherical surface combination structure and a pitch thickness adjustment structure. The pitch spherical surface combination structure comprises a pitch ball head gasket (71) and a pitch ball socket gasket (72). The convex spherical surface of the pitch ball head gasket (71) matches with the concave spherical surface of the pitch ball socket gasket (72). The opposite sides of the pitch ball head gasket (71) and the pitch ball socket gasket (72) are both planes. The pitch thickness adjustment structure comprises two pitch wedge gaskets (73). The inclined surfaces of the two pitch wedge gaskets (73) match. The first connecting bolt passes through the pitch ball head gasket (71), the pitch ball socket gasket (72) and the two pitch wedge gaskets (73).

2. A structure for eliminating assembly stress of a tracking and aiming host unlocker according to claim 1, characterized in that: The pitch ball head gasket (71) and the pitch ball socket gasket (72) are both provided with a pitch positioning hole for the first connecting bolt to pass through, and the diameter of the pitch positioning hole is larger than the outer diameter of the first connecting bolt.

3. The structure for eliminating assembly stress of the tracking and aiming host unlocker according to claim 1, characterized in that: Each of the pitch wedge-shaped gaskets (73) is provided with a first long strip groove for a first connecting bolt to pass through along the direction of its thickness change, and the first connecting bolt matches the width of the first long strip groove; when the pitch wedge-shaped gasket (73) is pushed, the distance between the planes of the two pitch wedge-shaped gaskets (73) changes.

4. The structure for eliminating assembly stress of the tracking and aiming host unlocker according to claim 1, characterized in that: The elevation spherical surface combination structure is located on a side of the elevation thickness adjustment structure that is away from the camera body (1).

5. The structure for eliminating assembly stress of the tracking and aiming host unlocker according to claim 1, characterized in that: The azimuth gasket unit comprises an azimuth spherical surface combination structure and an azimuth thickness adjustment structure; The azimuth spherical surface combination structure comprises a pyrotechnic base (5) and an azimuth spherical head gasket (61), wherein two ends of the pyrotechnic base (5) are respectively provided with a bottom flange (5a) and a connection plane (5b), wherein the connection plane (5b) is used to connect with an azimuth unlocker (31), and the other end of the azimuth unlocker (31) is connected to a U-shaped frame (10), and a second connection bolt passes through the bottom flange (5a), the azimuth spherical head gasket (61) and the azimuth thickness adjustment structure and is connected to a satellite cabin plate (4), and the bottom flange (5a) is provided with a plurality of through holes for the second connection bolt to pass through, and the surface of the bottom flange (5a) at one end of the through hole and facing the satellite cabin plate (4) is a concave spherical surface, and the convex spherical surface of the azimuth spherical head gasket (61) matches the concave spherical surface of the bottom flange (5a), and the other side of the azimuth spherical head gasket (61) is a plane; The azimuth thickness adjustment structure comprises two azimuth wedge-shaped gaskets (62), and the inclined surfaces of the two azimuth wedge-shaped gaskets (62) are matched.

6. The structure for eliminating assembly stress of the tracking and aiming host unlocker according to claim 5, characterized in that: The azimuth unlocking device (31) comprises an upper unit (312) and a lower unit (311) connected to each other, wherein a pyrotechnic device is built in the part between the upper unit (312) and the lower unit (311) so as to separate the upper unit (312) and the lower unit (311) after firing, and connecting ears (3c) are fixedly connected to both sides of the upper unit (312), and a connecting flange (3a) is connected to the outside of the lower unit (311); The connecting lug (3c) is fixedly connected to the U-shaped frame (10); A U-shaped recess is provided on one side of the pyrotechnic base (5), the U-shaped recess is located in the middle of the connecting plane (5b), the lower unit is clamped in the U-shaped recess, and the connecting flange is located on the side of the connecting plane (5b) away from the bottom flange (5a), and the connecting flange (3a) of the orientation unlocker (31) is in contact with the connecting plane (5b) and fixed by screws.

7. The structure for eliminating assembly stress of the tracking and aiming host unlocker according to claim 1, characterized in that: Four azimuth unlockers (31) are provided, and the four azimuth unlockers (31) are respectively located on both sides of the azimuth axis system (9), and the four azimuth unlockers (31) are distributed in a rectangular shape.

8. The structure for eliminating assembly stress of the tracking and aiming host unlocker according to claim 1, characterized in that: The two ends of the U-shaped frame (10) are located on both sides of the camera body (1), and two pitch unlockers (32) are provided. The two pitch unlockers (32) are respectively connected to two side surfaces of the camera body (1) facing the two ends of the U-shaped frame (10).

9. An assembly method for a structure for eliminating assembly stress of a tracking and aiming host unlocker according to any one of claims 1 to 8, characterized in that: include: S1: The azimuth unlocking device (31) is matched and fixed with the pyrotechnic base (5) to obtain the azimuth unlocking device component; S2: After the U-shaped frame (10) and the camera body (1) are assembled, the U-shaped frame (10) is rotatably connected to the satellite cabin plate (4) through the azimuth axis system (9), and the azimuth unlocking device component of step S1 is matched with the U-shaped frame (10) and fastened with screws to complete the installation of the four sets of azimuth unlocking device components; S3: Installing an azimuth ball head gasket (61) and two azimuth wedge-shaped gaskets (62) at each concave spherical surface of each pyrotechnic base (5), screwing in a second connecting bolt, and not tightening the second connecting bolt, thereby completing the preliminary connection and installation of the pyrotechnic base (5) and the satellite cabin plate (4); S4: Repeat step S3 to complete the preliminary connection and installation of the remaining three sets of azimuth unlocking device components and the satellite cabin panel (4); S5: The pitch unlocker (32) is matched with the inner side of the U-shaped frame (10) and fixed, and the pitch ball head gasket (71), the pitch ball socket gasket (72) and the two pitch wedge-shaped gaskets (73) are sequentially installed in the gap between the pitch unlocker (32) and the camera body (1), and the first connecting bolt is screwed in. The first connecting bolt is not tightened, and the preliminary connection and installation of the pitch unlocker (32) on one side of the camera body (1) is completed; S6: repeat step S5 to complete the preliminary connection and installation of the pitch unlocking device (32) on the other side of the camera body (1); S7: The positions where the satellite cabin board (4) is connected to the four azimuth unlockers (31) are marked as 1, 3, 2 and 4 in sequence, wherein 1 and 2 are a group of diagonal positions, and 3 and 4 are a group of diagonal positions; a standard universal magnetic table base (16) is installed at the diagonal positions 1 and 2 on the satellite cabin board (4), a micrometer (17) is installed on the table base, and the posture of the standard universal magnetic table base (16) is adjusted so that the needle of the micrometer (17) contacts the first local plane (10c) of the U-shaped frame (10). Similarly, the needle of another micrometer (17) contacts the second local plane (10d), and the readings of the two micrometers at this time are read and recorded respectively, and recorded as X1 and X2; S8: Adjust the three paired azimuth wedge-shaped gaskets (62) of the pyrotechnic base (5) at the diagonal positions 1 and 2 so that the azimuth wedge-shaped gaskets (62) fill and squeeze the azimuth installation gap (19) between the pyrotechnic base (5) and the satellite cabin plate (4), and simultaneously observe the readings of the two micrometers (17) in step S7 to ensure that the values ​​are within the range of X1±0.003 and X2±0.003; S9: Repeat steps S7 and S8 to complete the filling and tightening of three sets of paired azimuth wedge-shaped gaskets (62) at diagonal positions 3 and 4, ensuring that the values ​​of the dial gauge are within the range of X3±0.003 and X4±0.003; finally, tighten the second connecting bolts in the order of positions 1, 2, 3, and 4 to complete the installation of the azimuth unlocker (31); S10: Remove the standard universal magnetic gauge base (16) and the dial gauge (17) used in steps S7, S8, and S9, and place two sets of gauge bases and dial gauges (17) on the bottom plane (10j) of the U-shaped frame (10), respectively adjust the standard universal magnetic gauge base (16) so that the needle of the dial gauge (17) contacts the two planes (1c) on both sides of the camera body (1), and read and record the readings of the left and right dial gauges at this time, which are recorded as Y1 and Y2; S11: respectively adjust the paired pitch wedge-shaped gaskets (73) in the left and right pitch unlockers (32) so that the paired pitch wedge-shaped gaskets (73) fill and squeeze the pitch installation gap (18) between the camera body (1) and the pitch unlocker (32), and simultaneously observe the readings of the two micrometers (17) in step S10 to ensure that the values ​​at this time are within the range of Y1±0.003 and Y2±0.003, and finally tighten the first connecting bolt.

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