A space optical camera protective cover, cover removing tool and method of use thereof

Abstract

The present application relates to optical camera protection device and method, specifically relates to a kind of space optical camera protection cover, cover tool and its using method, to solve the existing technology in the protection cover is extracted, surface dust can slide into camera inside or other precision devices in satellite, affect the performance of entire satellite, or artificial extraction protection cover is very difficult The deficiency of insufficient. Space optical camera protection cover includes half protection cover A, half protection cover B and contraction component, half protection cover A includes protection shell and half-round protection plate in protection shell;Half protection cover B is identical with the structure of half protection cover A, and the both are symmetrically arranged, and protection cover main body is formed by hinged protection plate, first telescopic structure and second telescopic structure are arranged between half protection cover A and half protection cover B, the relative rotation of both is realized;Cover tool includes main rod, elongated rod, grabbing rod, and grabbing clamp is arranged on grabbing rod, for grabbing space optical camera protection cover.

Description

TECHNICAL FIELD

[0001] The present application relates to optical camera protection device and method, specifically relates to a space optical camera protection cover, cover tool and its using method. BACKGROUND

[0002] Space optical camera is an important part of satellite, which is used to complete various scientific exploration work. After the satellite completes all functional tests, it needs to go through the following links before the rocket is ignited and launched: fairing closing, connecting with the rocket, and standing in the launch tower. In the foregoing links, the camera protection cover needs to be covered on the light shield of the camera to prevent dust and other impurities from entering the camera, so as to ensure that the optical camera has good imaging quality in space. The existing space optical camera protection cover is generally a red cloth protection cover, which has poor rigidity. During the removal process before the rocket is launched, the protection cover is easily deformed, which may cause the dust on the surface to slide into the camera or other precision devices in the satellite, affecting the performance of the entire satellite. In addition, most of the current space optical cameras are close to the rocket fairing shell, and the operator usually removes the protection cover directly by hand through the reserved window on the outside of the rocket. However, when the rocket is larger or the space optical camera is farther away from the rocket fairing shell, it is very difficult to manually remove the protection cover. With the rapid development of the aerospace field, it is an important issue to protect the space optical camera stably, reliably and conveniently, which is also of great significance to the smooth development of various space exploration missions with high quality. SUMMARY

[0003] The purpose of the present application is to solve the problems in the prior art that the dust on the surface of the protection cover may slide into the camera or other precision devices in the satellite during the removal of the protection cover, affecting the performance of the entire satellite, or it is very difficult to manually remove the protection cover, and to provide a space optical camera protection cover, cover tool and its using method.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the present application is as follows:

[0005] The application discloses a space optical camera protection cover, which is characterized by comprising a half protection cover A, a half protection cover B and a contraction assembly; the half protection cover A comprises a half-cylindrical protection shell and a half-circular protection plate arranged in the protection shell in a radial direction; a part of the protection shell located on the upside of the protection plate is defined as a first shell body, and a part of the protection shell located on the downside of the protection plate is defined as a second shell body; two end parts of the first shell body are respectively provided with first bevels, and two end parts of the second shell body are respectively provided with second bevels; the half protection cover B is the same in structure as the half protection cover A, and the half protection cover B is symmetrically arranged with the half protection cover A; straight edges of the protection plate of the half protection cover B are hingedly connected with straight edges of the protection plate of the half protection cover A, so as to form a protection cover main body; a first telescopic opening is formed between the first bevel of the half protection cover A and the first bevel of the half protection cover B, and a second telescopic opening is formed between the second bevel of the half protection cover A and the second bevel of the half protection cover B; a first telescopic structure in an unfolded state is arranged in the first telescopic opening, and a second telescopic structure in a contracted state is arranged in the second telescopic opening; a locking device is arranged on the second shell body at a position corresponding to the second telescopic structure, so as to ensure that the protection cover main body is stable in an unfolded state; the contraction assembly comprises a supporting rod, a first pulling rope, a second pulling rope and a pulling ring; two ends of the supporting rod are respectively hingedly connected with two end parts of any first shell body of the half protection cover A or the half protection cover B, or two ends of the supporting rod are respectively hingedly connected with positions close to the edge of the two ends of any straight edge of the protection plate of the half protection cover A or the half protection cover B; a positioning ring is arranged in the middle of the supporting rod; one end of the first pulling rope is connected with the first shell body of the half protection cover A, and the other end of the first pulling rope passes through the positioning ring and is connected with the pulling ring; one end of the second pulling rope is connected with the first shell body of the half protection cover B, and the other end of the second pulling rope passes through the positioning ring and is connected with the pulling ring.

[0006] Further, the locking device comprises a locking motor arranged on any second shell body of the half protection cover A and the half protection cover B and a pulley arranged on the other second shell body; the pulley is connected with the output end of the locking motor through a connecting rope; the locking motor is rotated in a forward direction or a reverse direction to tighten or loosen the connecting rope.

[0007] Further, the protection plate of the half protection cover A and the protection plate of the half protection cover B are hingedly connected through a movable hinge.

[0008] The supporting rod is an arc-shaped rod; two ends of the arc-shaped rod are respectively hingedly connected with positions close to the lower end of the first bevel of the two end parts of the first shell body of the half protection cover B through ball hinges.

[0009] The positioning ring is located on the side of the supporting rod away from the protection plate.

[0010] The first telescopic structure and the second telescopic structure are organ-folding structures.

[0011] Further, the wall thickness of the first shell body is 3mm-4mm, and the wall thickness of the second shell body is 0.5-0.8mm.

[0012] The first telescopic structure and the second telescopic structure are made of cowhide material, and the first telescopic structure and the two first housings are connected by epoxy glue, and the second telescopic structure and the two second housings are connected by epoxy glue.

[0013] The first housing, the second housing, the protection plate and the support rod are made of aluminum alloy.

[0014] Meanwhile, the application also provides a cover removing tool for removing the space optical camera protection cover, which is characterized in that: the cover removing tool comprises a main rod, an extension rod, a grabbing rod and a driving unit; one end of the main rod is telescopically connected with one end of the extension rod; the other end of the extension rod is provided with a pressing structure for pressing the support rod of the space optical camera protection cover when the cover is removed; the grabbing rod is a telescopic structure, one end of the grabbing rod is rotationally connected with the extension rod, and the other end of the grabbing rod is provided with a grabbing clamp; the grabbing clamp is correspondingly arranged with the pressing structure and is used for grabbing the lifting ring of the space optical camera protection cover; and the driving unit is used for controlling the rotation and telescoping of the grabbing rod and the grabbing action of the grabbing clamp.

[0015] Further, the grabbing clamp comprises a first grabbing arm and a second grabbing arm arranged oppositely;

[0016] The end of the first grabbing arm is provided with a hook-shaped structure, and the end of the second grabbing arm is provided with a limiting hole corresponding to the position of the hook-shaped structure of the first grabbing arm, so that the hook-shaped structure of the first grabbing arm passes through the limiting hole of the second grabbing arm to realize the closure of the grabbing clamp.

[0017] Further, one end of the main rod close to the extension rod is a hollow structure, the end of the hollow structure is provided with a locking ring, and the other end of the extension rod is arranged in the hollow structure of the main rod, so that the extension rod is adjusted by loosening or tightening the locking ring to realize the telescopic connection.

[0018] The grabbing rod comprises a grabbing main rod and a grabbing sub-rod, one end of the grabbing main rod is rotationally connected with the extension rod, and the other end of the grabbing main rod is provided with a hollow structure, one end of the grabbing sub-rod is arranged in the hollow structure of the grabbing main rod, and the grabbing sub-rod is driven by the driving unit to move along the hollow structure, so as to realize the telescoping of the grabbing rod.

[0019] Further, the driving unit comprises a third motor, a fourth motor and a fifth motor.

[0020] The third motor is arranged on the extension rod and close to the connecting part of the extension rod and the grabbing rod, the output end of the third motor is connected with the grabbing rod, and the third motor is used for driving the grabbing rod to rotate.

[0021] The fourth motor is arranged at the other end of the grabbing main rod, the output end of the fourth motor is connected with the grabbing sub-rod, and the fourth motor is used for driving the grabbing sub-rod to move.

[0022] The fifth motor is arranged at the other end of the grabbing sub-rod, and the output end is connected to the grabbing clamp for controlling the opening and closing of the grabbing clamp.

[0023] At the same time, the present invention also provides a method for using the mask removing tool, which is special in that it includes the following steps:

[0024] S1, adjust the length of the extension rod in the cover removal tool so that its front end reaches just above the protective cover of the aerospace optical camera, and press the support rod through the pressing structure;

[0025] S2, the operator controls the grabbing clamp to grab the lifting ring through the driving unit and releases the locking device;

[0026] S3, the driving unit simultaneously drives the grabbing rod to rotate and extend until the protective cover of the aerospace optical camera is in a retracted and closed state. The rotation and extension of the grabbing rod satisfy the following relationship:

[0027] △L(t)=L÷(cosωt-1)

[0028] Wherein, ΔL(t) is the extension of the grab bar, L is the initial length of the grab bar, ω is the angular velocity of the grab bar, and t is the time it takes for the drive unit to drive the grab bar to rotate and extend.

[0029] S4: The operator lifts and removes the protective cover of the space optical camera, completing the cover removal.

[0030] Beneficial effects of the present invention:

[0031] 1. When the protective cover for aerospace optical cameras of the present invention is installed on the camera's light shield, if dust or other debris falls, it will land on the outside of the protective cover and the protective plate. Due to the flange structure formed on the first shell, the area on the protective plate can temporarily store the dust or other debris. Existing protective covers for aerospace optical cameras made of red cloth do not have this feature.

[0032] 2. The present invention employs a space optical camera protective cover that utilizes a structural design combining a half protective cover A and a half protective cover B. Furthermore, it employs an open-and-close design during use. When removing the protective cover, it can be appropriately folded. Because the reserved window on a rocket cannot be too large, the open-and-close design of the two half protective covers allows for convenient and reliable removal of the protective cover from the reserved window on the rocket fairing. Furthermore, when removed, the protective cover collapses and closes, more reliably containing dust or debris within the semi-enclosed area formed by the cover's flange structure and protective plate. Dust or debris then moves with the cover to the exterior of the rocket, effectively minimizing the impact of dust or debris on satellites and other components within the rocket.

[0033] 3. The main material of the space optical camera protective cover is metal, which has good rigidity and can be combined according to a preset track during removal, thereby avoiding dust or sundries from scattering.

[0034] 4. The application also provides a cover removing tool matched with the space optical camera protective cover and a use method thereof, which can stably, reliably and conveniently remove the space optical camera protective cover. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a perspective structural schematic view of an embodiment of the space optical camera protective cover of the application;

[0036] Figure 2 is a top view of Figure 1 ;

[0037] Figure 3 is an A-A sectional view of Figure 2 ;

[0038] Figure 4 is a schematic view of a folded state of an embodiment of the space optical camera protective cover of the application;

[0039] Figure 5 is a perspective structural schematic view of an embodiment of the cover removing tool of the application;

[0040] Figure 6 is a schematic view of a rotating state of a grabbing rod in an embodiment of the cover removing tool of the application;

[0041] Figure 7 is a schematic view of an open state of a grabbing clamp in an embodiment of the cover removing tool of the application;

[0042] Figure 8 is a schematic view of a closed state of the grabbing clamp in an embodiment of the cover removing tool of the application;

[0043] Figure 9 is a schematic view of a structure in which an embodiment of the space optical camera protective cover of the application is installed on a light shield cover of a space optical camera;

[0044] Figure 10 is a schematic view of a use state of the cover removing tool in step 2 of an embodiment of the use method of the cover removing tool of the application;

[0045] Figure 11 is a schematic view of a use state of the cover removing tool in step 3 of an embodiment of the use method of the cover removing tool of the application;

[0046] Figure 12 is a local enlarged structural schematic view of C in Figure 11 ;

[0047] EXPLANATION OF REFERENCE NUMERALS:

[0048] 1- aerospace optical camera protective cover, 110- protective plate, 111- first housing, 112- second housing, 120- first motor, 121- second motor, 122- first pulley, 123- second pulley, 124- connecting rope, 130- support rod, 131- positioning ring, 132- first pulling rope, 133- pulling ring, 134- second pulling rope, 140- movable hinge, 141- first telescopic structure, 142- second telescopic structure;

[0049] 2- mask removal tool, 210- main rod, 211- controller, 220- extension rod, 221- third motor, 222- locking ring, 223- pressing structure, 230- grabbing rod, 231- grabbing main rod, 232- grabbing sub-rod, 233- fourth motor, 240- grabbing clamp, 241- first grabbing arm, 242- second grabbing arm, 243- fifth motor;

[0050] 3-Satellite, 4-Rocket fairing. DETAILED DESCRIPTION

[0051] like Figures 1 to 4 As shown, the protective cover for aerospace optical cameras of the present invention includes a half protective cover A, a half protective cover B and a shrinking assembly.

[0052] Half-protective cover A comprises a semi-cylindrical protective shell and a semi-circular protective plate 110 radially disposed within the shell. The portion of the shell above the protective plate 110 is designated as a first shell 111, and the portion below the protective plate 110 is designated as a second shell 112. The first shell 111 has a first bevel at each end, and the second shell 112 has a second bevel at each end. Half-protective cover B has the same structure as half-protective cover A, and the two are symmetrically arranged to form the main body of the protective cover. When deployed, the diameter d of the inner cavity of the main body should be 1mm-2mm larger than the outer diameter of the lens hood of the aerospace optical camera to be protected. The protective plate 110 of half-protective cover B is hinged to the protective plate 110 of half-protective cover A at a straight edge. In this embodiment, half-protective cover A and half-protective cover B are hinged via a movable hinge 140. One side of the movable hinge 140 is screwed to the protective plate 110 of half-protective cover A, and the other side is screwed to the protective plate 110 of half-protective cover B. The movable hinge 140 is made of a polymer material, preferably polypropylene, and the first shell 111 , the second shell 112 , and the protective plate 110 are made of an aluminum alloy.

[0053] The first stretchable opening is formed between the first bevel of the half protective cover A and the first bevel of the half protective cover B, and the second stretchable opening is formed between the second bevel of the half protective cover A and the second bevel of the half protective cover B; the first stretchable structure 141 in the expanded state is arranged in the first stretchable opening, and the second stretchable structure 142 in the contracted state is arranged in the second stretchable opening; the locking device is arranged on the second shell 112 at a position corresponding to the second stretchable structure 142, and is used for ensuring the stability of the contracted state of the second stretchable structure 142; the first stretchable structure 141 and the second stretchable structure 142 are both concertina fold structures, so that the four concertina fold structures are arranged between the half protective cover A and the half protective cover B, the concertina fold structures are contracted and expanded, and the rotation of the half protective cover A and the half protective cover B is realized, so that the state switching of the space optical camera protective cover 1 from the expanded use to the folding closing is realized; in the embodiment, the concertina fold structure is made of cowhide material, and the concertina fold structure is connected with the half protective cover A and the half protective cover B through the epoxy glue.

[0054] In the embodiment, the wall thickness of the first shell 111 and the protective plate 110 is 3mm-4mm, and the part of the structure needs to have good rigidity. Figure 3 As shown in the figure, the first shell 111 of the half protective cover A and the half protective cover B forms the flange structure of the space optical camera protective cover 1. The wall thickness of the second shell 112 is 0.5-0.8mm, so that the second shell 112 can be deformed to a certain extent during use, and is better clamped on the outside of the light shield cover of the space optical camera.

[0055] The contraction assembly includes a support rod 130, a first pull rope 132, a second pull rope 134 and a pull ring 133; the support rod 130 is an arc-shaped rod, both ends of the support rod 130 are hinged to the positions close to the lower end of the first bevel of the first shell 111 of the half protective cover B through ball hinges, and the positioning ring 131 is arranged in the middle of the support rod 130; the positioning ring 131 is located on the side of the support rod 130 away from the protective plate 110, the surface of the positioning ring 131 is smooth enough, which is beneficial to the sliding of the pull rope in the positioning ring 131 and can reduce the abrasion of the first pull rope 132 and the second pull rope 134. One end of the first pull rope 132 is connected to the middle position of the first shell 111 of the half protective cover A, and the other end of the first pull rope 132 passes through the positioning ring 131 and is connected to the lower part of the pull ring 133; similarly, one end of the second pull rope 134 is connected to the middle position of the first shell 111 of the half protective cover B, and the other end of the second pull rope 134 passes through the positioning ring 131 and is connected to the lower part of the pull ring 133. Figure 2As can be seen, the first and second pull cords 132, 134 converge at the bottom of the pull ring 133 and are fixed to the pull ring 133. They are located on the same straight line and form a cross with the projection of the support rod 130. In this embodiment, the support rod 130 is made of aluminum alloy. In other embodiments of the present invention, the ends of the support rod 130 can also be hinged to the two ends of the first shell 111 of the half-protective cover A, or to the straight edges of either protective plate 110 of half-protective cover A or half-protective cover B near the two ends.

[0056] The outer side walls of both ends of the second shell 112 of the half protective cover B are provided with locking motors, which are respectively denoted as the first motor 120 and the second motor 121, and their sizes and performances are consistent, such as Figure 2 As shown, pulleys are provided at both ends of the half protective cover A, corresponding to the first motor 120 and the second motor 121, and are denoted as the first pulley 122 and the second pulley 123, respectively. The output end of the first motor 120 is connected to the first pulley 122, and the output end of the second motor 121 is connected to the second pulley 123, respectively, via connecting ropes 124, forming two sets of locking devices. The first motor 120 and the second motor 121 rotate forward to tighten the connecting ropes 124, thereby locking the half protective cover A and the half protective cover B, which facilitates a tighter attachment of the aerospace optical camera protective cover 1 to the light shield of the aerospace optical camera. It should be noted that in other embodiments of the present invention, the positions of the first motor 120 and the first pulley 122 are interchangeable, and the positions of the second pulley 123 and the second motor 121 are also interchangeable, and the same effect can be achieved after interchange.

[0057] The working principle of the aerospace optical camera protective cover of the present invention is as follows: the locking motor is driven forward, the connecting rope 124 is contracted, the aerospace optical camera protective cover 1 is in the unfolded state and locked, the locking motor is driven backward, the connecting rope 124 is gradually loosened, the pull ring 133 is pulled upward, the first pull rope 132 and the second pull rope 134 simultaneously pull the half protective cover A and B, so that the half protective cover A and B rotate around the axis of the movable hinge 140 to fold in half, and finally Figure 4 Shown in the stowed closed position.

[0058] Figures 5 to 8The cover removing tool 2 comprises a main rod 210, an elongated rod 220 arranged at one end of the main rod 210, and a grabbing rod 230 rotatably connected at one end to the elongated rod 220. One end of the main rod 210 is hollow, and a locking ring 222 is arranged at the end of the hollow structure. One end of the elongated rod 220 is arranged in the hollow structure of the main rod 210, and the elongated rod 220 is manually adjusted to be extended or retracted by loosening or tightening the locking ring 222. The other end of the elongated rod 220 is provided with a U-shaped pressing structure 223 for pressing the support rod 130 of the space optical camera protective cover 1 during cover removal. A third motor 221 is arranged on the elongated rod 220 near the connection part of the elongated rod 220 and the grabbing rod 230, and the output end of the third motor 221 is connected to the grabbing rod 230 for driving the grabbing rod 230 to rotate.

[0059] The grabbing rod 230 is arranged in a telescopic structure, comprising a grabbing main rod 231 and a grabbing sub-rod 232. One end of the grabbing main rod 231 is rotatably connected to the elongated rod 220, and the other end is hollow and provided with a fourth motor 233 at the end. One end of the grabbing sub-rod 232 is arranged in the hollow structure of the grabbing main rod 231 and connected to the output end of the fourth motor 233, and the fourth motor 233 drives the grabbing sub-rod 232 to be extended or retracted relative to the grabbing main rod 231. The other end of the grabbing sub-rod 232 is provided with a grabbing clamp 240 and a fifth motor 243 corresponding to the pressing structure 223 of the elongated rod 220. The grabbing clamp 240 comprises two oppositely arranged grabbing arms, which are respectively denoted as a first grabbing arm 241 and a second grabbing arm 242. The end of the first grabbing arm 241 is arranged in a hook shape, and the end of the second grabbing arm 242 is provided with a limiting hole corresponding to the position of the hook-shaped structure of the first grabbing arm 241. When the grabbing clamp 240 is closed, the hook-shaped structure of the first grabbing arm 241 passes through the limiting hole of the second grabbing arm 242, realizing the closure of the grabbing clamp 240. The output end of the fifth motor 243 is connected to the grabbing clamp 240 for controlling the opening or closure of the grabbing clamp 240. Figure 7 Figure 8 When the grabbing clamp 240 is closed, the hook-shaped structure of the first grabbing arm 241 passes through the limiting hole of the second grabbing arm 242, realizing the closure of the grabbing clamp 240. The output end of the fifth motor 243 is connected to the grabbing clamp 240 for controlling the opening or closure of the grabbing clamp 240.

[0060] The tail of the main rod 210 is also provided with a controller 211, which can control the operation of the first motor 120 to the fifth motor 243. It should be noted that the driving capacity of the third motor 221 and the fourth motor 233 needs to meet certain relationship, which is described in detail in step three of the use method.

[0061] The method for removing the space optical camera protective cover by using the above cover removing tool 2 is as follows:

[0062] Step 1: Before the satellite 3 is installed in the rocket fairing 4, the operator buckles the space optical camera protective cover 1 on the light shield of the space optical camera, as shown in Figure 9 ​As shown, the first motor 120 and the second motor 121 are controlled and driven to make the space optical camera protective cover 1 clamped on the light shield of the space optical camera, and then the satellite 3 is installed in the rocket fairing 4.

[0063] Step 2, after the satellite 3 and the rocket fairing 4 are installed on the rocket main body and the whole is placed on the launch tower, and before the launch, the cover of the reserved window of the rocket fairing 4 is opened, the length of the elongated rod 220 in the cover removing tool 2 is adjusted, the operator holds the cover removing tool 2, and the front end of the cover removing tool 2 can reach above the space optical camera protective cover 1, and the supporting rod 130 is pressed by the pressing structure 223, as shown in Figure 10 In this process, the pressing structure 223 of the elongated rod 220 and the grabbing clamp 240 of the grabbing sub-rod 232 are in the same position in the vertical direction.

[0064] Step 3, the operator drives the fifth motor 243 to make the grabbing clamp 240 grab the lifting ring 133. The first motor 120 and the second motor 121 are driven to make the connecting rope 124 between the first motor 120 and the first pulley 122 and between the second motor 121 and the second pulley 123 relaxed. The third motor 221 and the fourth motor 233 are driven until the space optical camera protective cover 1 is in the closed state, and then the space optical camera protective cover 1 is slowly lifted, as shown in Figure 11 and Figure 12 The moment when the third motor 221 and the fourth motor 233 start to be driven is recorded as t=0, the grabbing rod 230 starts to rotate, and the grabbing sub-rod 232 starts to elongate, and the process needs to meet the following geometric relationship:

[0065] ΔL(t)=L÷(cosωt-1)

[0066] Wherein, ΔL(t) is the elongation of the grabbing rod 230, that is, the elongation of the grabbing sub-rod 232, L is the initial length of the grabbing rod 230, ω is the angular velocity of the rotation of the grabbing rod 230, and t is the driving time of the third motor 221 and the fourth motor 233.

[0067] Step 4, the operator holds the cover removing tool 2 to move the space optical camera protective cover 1 to the outside of the rocket fairing 4, and completes the cover removing. The cover is installed back to the reserved window of the rocket fairing 4.

[0068] The present application is suitable for the satellite 3 equipped with the space optical camera, the satellite is installed behind the rocket fairing 4, the rocket is erected on the launching tower, the included angle between the optical axis of the space optical camera and the rocket axis is within 30°, within the angle, the dust can be better collected in the semi-closed area formed by the first shell 111 and the protection plate 110 when the cover is removed, if the angle exceeds the angle, the optical axis direction of the space optical camera has a larger inclination relative to the vertical direction, and the dust is easily caused to fall when the cover is removed. Meanwhile, the outer diameter of the preferred light shield of the space optical camera is 100-1000mm, if the diameter is too large, the size of the space optical camera protection cover 1 may exceed the reserved window size on the rocket fairing 4, resulting in that the space optical camera protection cover 1 cannot be removed, and if the diameter is too small, the size requirements of the first motor 120, the second motor 121, the first pulley 122, the second pulley 123 and the like are higher.

Claims

1. A space optical camera protection cover, characterized in that: it comprises a half-protection cover A, a half-protection cover B and a contraction assembly; the half-protection cover A comprises a half-cylindrical protection shell and a half-circular protection plate (110) arranged in the protection shell in a radial direction; a part of the protection shell above the protection plate (110) is denoted as a first shell (111), and a part of the protection shell below the protection plate (110) is denoted as a second shell (112); two ends of the first shell (111) are respectively provided with first bevels, and two ends of the second shell (112) are respectively provided with second bevels; the half-protection cover B is identical in structure to the half-protection cover A, and the two are symmetrically arranged; straight edges of the protection plate (110) of the half-protection cover B are hingedly connected to straight edges of the protection plate (110) of the half-protection cover A to form a main protection cover; a first telescopic opening is formed between the first bevels of the half-protection cover A and the half-protection cover B, and a second telescopic opening is formed between the second bevels of the half-protection cover A and the half-protection cover B; a first telescopic structure (141) in an unfolded state is arranged in the first telescopic opening, and a second telescopic structure (142) in a contracted state is arranged in the second telescopic opening; the second shell (112) is provided with a locking device at a position corresponding to the second telescopic structure (142) to ensure stability of an unfolded state of the main protection cover; the contraction assembly comprises a support rod (130), a first pulling rope (132), a second pulling rope (134) and a pulling ring (133); two ends of the support rod (130) are respectively hingedly connected to two ends of any first shell (111) of the half-protection cover A or the half-protection cover B, or two ends of the support rod (130) are respectively hingedly connected to positions close to edges of straight edges of any protection plate (110) of the half-protection cover A or the half-protection cover B; a positioning ring (131) is arranged in the middle of the support rod (130); one end of the first pulling rope (132) is connected to the first shell (111) of the half-protection cover A, and the other end of the first pulling rope (132) is connected to the pulling ring (133) through the positioning ring (131); one end of the second pulling rope (134) is connected to the first shell (111) of the half-protection cover B, and the other end of the second pulling rope (134) is connected to the pulling ring (133) through the positioning ring (131). 2.The space optical camera protection cover according to claim 1, characterized in that: the locking device comprises a locking motor arranged on any second shell (112) of the half-protection cover A and the half-protection cover B and a pulley arranged on the other second shell (112); the pulley is connected to an output end of the locking motor through a connecting rope (124); and the locking motor is rotated in a forward direction or a reverse direction to tighten or loosen the connecting rope (124). 3.The space optical camera protection cover according to claim 1 or 2, characterized in that: the protection plate (110) of the half-protection cover A and the protection plate (110) of the half-protection cover B are hingedly connected through a movable hinge (140); the support rod (130) is an arc-shaped rod; and two ends of the arc-shaped rod are respectively hingedly connected to positions close to lower ends of the first bevels of the two ends of the first shell (111) of the half-protection cover B through ball hinges. The positioning ring (131) is located on the side of the support rod (130) away from the protective plate (110); The first telescopic structure (141) and the second telescopic structure (142) are concertina structures.

4. The space optical camera protective cover according to claim 3, characterized in that: The wall thickness of the first shell (111) is 3-4 mm, and the wall thickness of the second shell (112) is 0.5-0.8 mm; The first telescopic structure (141) and the second telescopic structure (142) are made of cow leather, and the first telescopic structure (141) and the two first shells (111) and the second telescopic structure (142) and the two second shells (112) are connected by epoxy glue; The first shell (111), the second shell (112), the protective plate (110), and the support rod (130) are made of aluminum alloy.

5. A cover removing tool for removing the space optical camera protective cover according to any one of claims 1-4, characterized in that: The tool comprises a main rod (210), an elongated rod (220), a grabbing rod (230), and a driving unit; One end of the main rod (210) is telescopically connected to one end of the elongated rod (220); The other end of the elongated rod (220) is provided with a pressing structure (223) for pressing the support rod (130) of the space optical camera protective cover (1) during cover removal; The grabbing rod (230) is a telescopic structure, one end of the grabbing rod (230) is rotationally connected to the elongated rod (220), and the other end is provided with a grabbing clamp (240); the grabbing clamp (240) is arranged correspondingly to the pressing structure (223) and is used for grabbing the lifting ring (133) of the space optical camera protective cover (1); The driving unit is used for controlling the rotation and telescoping of the grabbing rod (230) and the grabbing action of the grabbing clamp (240).

6. The cover removing tool according to claim 5, characterized in that: The grabbing clamp (240) comprises oppositely arranged first and second grabbing arms (241) and (242); The end of the first grabbing arm (241) is provided with a hook-shaped structure, and the end of the second grabbing arm (242) is provided with a limiting hole corresponding to the position of the hook-shaped structure of the first grabbing arm (241), so that the hook-shaped structure of the first grabbing arm (241) passes through the limiting hole of the second grabbing arm (242) to realize the closure of the grabbing clamp (240).

7. The cover removing tool according to claim 6, characterized in that: One end of the main rod (210) near the elongated rod (220) is a hollow structure, the end of the hollow structure is provided with a locking ring (222), one end of the elongated rod (220) is arranged in the hollow structure of the main rod (210), and the telescopic connection is realized by loosening or tightening the locking ring (222) to adjust the elongated rod (220). The grabbing rod (230) comprises a grabbing main rod (231) and a grabbing sub-rod (232), one end of the grabbing main rod (231) is rotationally connected with the elongated rod (220), the other end is provided with a hollow structure, one end of the grabbing sub-rod (232) is arranged in the hollow structure of the grabbing main rod (231), the grabbing sub-rod (232) is driven to move along the hollow structure by a driving unit, and the extension and retraction of the grabbing rod (230) is realized.

8. The cover removing tool according to claim 7, characterized in that: The driving unit comprises a third motor (221), a fourth motor (233) and a fifth motor (243); The third motor (221) is arranged on the elongated rod (220) and close to the connecting part of the elongated rod (220) and the grabbing rod (230), the output end is connected with the grabbing rod (230) for driving the grabbing rod (230) to rotate; The fourth motor (233) is arranged at the other end of the grabbing main rod (231), the output end is connected with the grabbing sub-rod (232) for driving the grabbing sub-rod (232) to move; The fifth motor (243) is arranged at the other end of the grabbing sub-rod (232), the output end is connected with the grabbing clamp (240) for controlling the grabbing clamp (240) to open and close.

9. A method of using the extraction cap assembly of any one of claims 5-8, wherein, The method comprises the following steps: S1, adjusting the length of the elongated rod (220) in the cover removing tool (2) so that the front end reaches directly above the space optical camera protective cover (1), and the supporting rod (130) is pressed by the pressing structure (223); S2, after the operator controls the grabbing clamp (240) to grab the lifting ring (133) through the driving unit, the locking device is released; S3, the driving unit simultaneously drives the rotation and retraction of the grabbing rod (230) until the space optical camera protective cover (1) is in a closed state, and the rotation and retraction of the grabbing rod (230) satisfy the following relationship: △L(t)=L÷(cosωt-1) Wherein, △L(t) is the extension amount of the grabbing rod (230), L is the initial length of the grabbing rod (230), ω is the angular velocity of the rotation of the grabbing rod (230), and t is the time for the driving unit to drive the rotation and retraction of the grabbing rod (230); S4, the operator lifts and removes the space optical camera protective cover (1), and the cover removing is completed.

Images