Large-caliber large-stroke light shield installation guide device

Abstract

The invention relates to the technical field of spacecraft assembly, in particular to a large-diameter large-stroke light shield installation guide device which comprises a guide rod and a guide ring. The guide rod is vertically arranged, and the bottom end is suitable for being mounted on a star body; the guide ring sleeves the guide rod in a manner of moving up and down along the guide rod, and is suitable for being mounted on the outer wall of the bottom end of the light shield; in the lifting process with the stroke of 5400 mm, for the position above the star sensor and the stroke of about 4800 mm, an operator holds the light shield to stably descend, and for lifting near the protruding point of the star sensor, the descending direction of the light shield is restrained in the mode that the guide rod is matched with the guide ring, so that the shaking degree of the light shield is reduced as much as possible, and the stability of the light shield is improved. The distance between the light shield and the star sensor is kept stable, and the light shield is prevented from colliding with protruding parts such as the star sensor.

Description

Technical Field

[0001] The invention relates to the technical field of spacecraft assembly, and in particular to a large-caliber and large-stroke light shield installation guide device. Background Art

[0002] A geostationary optical remote sensing satellite is equipped with a sunshade for a large-aperture, long-focal-length, visible light / infrared common-aperture, high-resolution camera. The sunshade weighs about 200kg. Before launch, the sunshade needs to be hoisted on the ground so that the sunshade is set outside the camera and the camera is installed on the top of the star. However, the camera surface is equipped with protruding devices such as star sensors and probes. During the hoisting process, since the sunshade has a vertical stroke of more than 5400mm, and the minimum distance between the inner wall of the sunshade and the star sensor on the camera is only 16mm, when the sunshade is hoisted, the force is uneven and the quadrants are uneven, it is very easy to tilt eccentrically, and it is very easy to collide with components such as star sensors, affecting product safety. Especially in the later stage of general assembly, after the sunshade is installed in multiple layers, the operator cannot confirm the distance between the camera and the sunshade from the outside, which poses a great hidden danger.

[0003] Therefore, how to avoid the inner wall of the sunshade from colliding with components such as the star sensor when hoisting the sunshade has become a technical problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0004] The invention provides a large-caliber and large-stroke sunshade installation guide device, which is used to solve the problem of how to avoid the inner wall of the sunshade from colliding with components such as a star sensor when the sunshade is hoisted.

[0005] The present invention provides a large-caliber and large-stroke light shield installation guide device, comprising:

[0006] A guide rod is arranged vertically, and the bottom end of the guide rod is suitable for being mounted on a star body;

[0007] The guide ring is sleeved on the guide rod so as to move up and down along the guide rod, and is suitable for being installed on the outer wall of the bottom end of the light shield.

[0008] In some embodiments, it also includes:

[0009] The first connecting plate is detachably mounted on the heat sink fixing member of the light shield through a pressing sheet; the first connecting plate is connected to the guide ring.

[0010] In some embodiments, it also includes:

[0011] The first position adjustment mechanism is connected to the guide ring and the first connecting plate respectively, and is used to drive the first connecting plate to move horizontally or obliquely in the vertical plane.

[0012] In some embodiments, the first position adjustment structure includes:

[0013] A first fixing plate, one side of which is fixedly connected to the side wall of the guide ring;

[0014] There are four floating oil cylinders, one end of the cylinder away from the piston rod is hinged to the four corners of the first fixed plate, and one end of the piston rod away from the cylinder is hinged to the four corners of the first connecting plate.

[0015] In some embodiments, it also includes:

[0016] The second connecting plate is suitable for being detachably mounted on the star body; the connecting plate is connected to the bottom end of the guide rod.

[0017] In some embodiments, it also includes:

[0018] The second position adjustment mechanism is respectively connected to the second connecting plate and the bottom end of the guide rod, and is used to drive the guide rod to swing.

[0019] In some embodiments, the second position adjustment mechanism includes:

[0020] A second fixing plate, one side of which is fixedly connected to a side surface of the second connecting plate;

[0021] A rotating shaft, the bottom end of which is rotatably connected to the second fixed plate;

[0022] A third fixed plate, the bottom surface of which is fixedly connected to the top end of the rotating shaft, and one side of which is fixedly connected to the bottom end of the guide rod;

[0023] The servo motor is installed at the bottom end of the second fixed plate, and the output shaft is fixedly connected to the bottom end of the rotating shaft.

[0024] In some of the embodiments, a guide head is formed at the top end of the guide rod.

[0025] In some embodiments, the guide rod is a hollow structure.

[0026] The beneficial effects of the present invention are as follows: the large-aperture and large-stroke sunshade installation guide device of the present invention is equipped with a guide rod and a guide ring. During the hoisting process with a stroke of 5400mm, for the position above the star sensor, with a stroke of about 4800mm, the operator supports the sunshade to descend stably. For the hoisting near the protruding point of the star sensor, the guide rod and the guide ring are used to constrain the descending direction of the sunshade, thereby reducing the shaking degree of the sunshade as much as possible, so that the distance between the sunshade and the star sensor remains stable, and the sunshade is prevented from bumping against the star sensor and other protruding parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of some specific embodiments of a large-aperture and large-stroke light shield installation guide device of the present invention;

[0028] Figure 2 yes Figure 1 The schematic diagram of the structure of the large-aperture and large-stroke light shield installation guide device when it is in use;

[0029] Figure 3 It is a structural schematic diagram of some other specific embodiments of a large-aperture and large-stroke light shield installation guide device of the present invention.

[0030] In the accompanying drawings, 110, guide rod; 111, guide head; 120, guide ring; 130, first connecting plate; 140, pressure plate; 150, second connecting plate; 160, fin; 170, first position adjustment mechanism; 171, first fixed plate; 172, floating cylinder; 180, second position adjustment mechanism; 181, second fixed plate; 182, rotating shaft; 183, third fixed plate; 184, servo motor; 200, star body; 300, sunshade. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] As described in the background technology, during the hoisting process, since the vertical stroke of the sunshade is greater than 5400mm, and the minimum distance between the inner wall of the sunshade and the star sensor on the camera is only 16mm, when the sunshade is hoisted, the force is uneven and the quadrants are uneven, it is very easy to have eccentric tilting, and it is very easy to collide with components such as the star sensor, affecting product safety. Especially in the later stage of general assembly, after the sunshade is installed in multiple layers, the operator cannot confirm the distance between the camera and the sunshade from the outside, which poses a great hidden danger. Therefore, how to avoid the inner wall of the sunshade from colliding with components such as the star sensor when hoisting the sunshade has become a technical problem that needs to be solved urgently by those skilled in the art.

[0033] To solve the above problems, refer to Figure 1 , Figure 2 and Figure 3 The present invention provides a large-caliber and large-stroke sunshade installation guide device, comprising a guide rod 110 and a guide ring 120. The guide rod 110 is vertically arranged, and the bottom end is suitable for installation on the star body 200. The guide ring 120 can be mounted on the guide rod 110 and moved up and down along the guide rod 110, and is suitable for installation on the outer wall of the bottom end of the sunshade 300. It should be noted that Figure 2The direction of the middle arrow is the moving direction of the sunshade 300 during the hoisting process. During the hoisting process with a stroke of 5400mm, for the position above the star sensor, about 4800mm of the stroke, the operator supports the sunshade 300 to descend steadily, and for the hoisting near the protruding point of the star sensor, the guide rod 110 and the guide ring 120 are used to constrain the descending direction of the sunshade 300, and the shaking degree of the sunshade 300 is reduced as much as possible, so that the distance between the sunshade 300 and the star sensor is kept stable, and the sunshade 300 is prevented from hitting the protruding parts such as the star sensor.

[0034] Preferably, there are two guide rods 110 and four guide rings 120. The bottom ends of the two guide rods 110 are respectively installed on opposite sides of the star body 200. Two guide rings 120 are sleeved on one of the guide rods 110 and are respectively connected to the bottom end of one side of the sunshade 300, and the other two guide rings 120 are sleeved on the other guide rod 110 and are respectively connected to the bottom end of the other side of the sunshade 300. The diameter of each guide ring 120 is 60 mm, and the diameter of the cross section of each guide rod 110 is 50 mm. Assuming that the sunshade 300 has a 5 cm deviation in the vertical direction due to the lifting, it can be calculated that the angle between the axis of the sunshade 300 and the vertical direction is 0.716°. The weight of the sunshade 300 is about 200 kg, and the force applied by the tilted sunshade 300 to a single guide rod 110 is about 12.5 N. Verification by simulation software shows that under this stress condition, the maximum deformation of each guide rod 110 is 1.55 mm, and the maximum offset of the sunshade 300 is 11.55 mm, which is significantly smaller than the minimum distance of 16 mm between the inner wall of the sunshade 300 and the star sensor. Therefore, it can effectively prevent the sunshade 300 from colliding with the star sensor and other components.

[0035] Since the weight of the sunshade 300 is about 200kg, considering the stress of the guide ring 120 and the guide rod 110, if the guide ring 120 is directly connected to the sunshade 300, the connection is very easy to break. If the bottom end of the guide rod 110 is directly connected to the body, the connection is also very easy to break. And there is no reserved installation hole for the guide ring 120 on the sunshade 300. Therefore, the large-caliber and large-stroke sunshade installation guide device also includes a first connecting plate 130 and a second connecting plate 150. The first connecting plate 130 is an arc-shaped plate, which can be well fitted on the outer wall of the sunshade 300, thereby increasing the contact area when the guide ring 120 is connected to the sunshade 300, thereby increasing the strength and stability of the connection between the guide ring 120 and the sunshade 300. The second connecting plate 150 increases the contact area when the bottom end of the guide rod 110 is connected to the star body 200, thereby increasing the strength and stability of the connection between the guide rod 110 and the star body 200. Specifically, the first connecting plate 130 is detachably mounted on the heat sink fixing member of the sunshade 300 through the pressing plate 140. When the sunshade 300 is restricted in its falling direction by means of the guide rod 110 and the guide ring 120, the first connecting plate 130 is connected to the heat sink fixing member of the sunshade 300 by means of the pressing plate 140. Compared with the form of connection by means of screws, the connection is not easy to loosen, and the stability of the connection is enhanced. After the guidance is completed, the first connecting plate 130 is detached from the sunshade 300. The guide ring 120 is detachably connected to the first connecting plate 130 through the connecting ear, so as to facilitate the disassembly and assembly of the guide ring 120 and the first connecting plate 130. An oblong mounting hole is provided on the first connecting ear, so as to facilitate the adjustment of the mounting position of the guide ring 120. The second connecting plate 150 is suitable for being detachably mounted on the star body 200. When the sunshade 300 is restricted in its falling direction by means of the guide rod 110 and the guide ring 120, the second connecting plate 150 is connected to the star body 200 by means of bolts. After the guiding is completed, the second connecting plate 150 is detached from the star body 200. The connecting plate is connected to the bottom end of the guide rod 110 through the fin 160 to ensure the stability of the position of the guide rod 110.

[0036] Preferably, a guide head 111 is formed at the top of the guide rod 110 , so that the guide ring 120 can be sleeved on the guide rod 110 .

[0037] Preferably, the guide rod 110 is a hollow structure with a wall thickness of 1 mm-3 mm, thereby achieving a lightweight design and balanced stress conditions.

[0038] In other embodiments, such as Figure 3As shown, the large-caliber and large-stroke light shield installation guide device includes a guide rod 110, a guide ring 120, a first connecting plate 130, a second connecting plate 150, a first position adjustment mechanism 170 and a second position adjustment mechanism 180. The guide ring 120 can be sleeved on the guide rod 110 so as to move up and down along the guide rod 110. The first position adjustment mechanism is respectively connected to the guide ring 120 and the first connecting plate 130, and is used to drive the connecting plate to move vertically, horizontally or obliquely in the vertical plane, thereby driving the light shield 300 to move vertically, horizontally or obliquely. The second position adjustment mechanism 180 is respectively connected to the bottom end of the second connecting plate 150 and the guide rod 110, and is used to drive the guide rod 110 to swing, so as to drive the guide ring 120, the first position adjustment mechanism 170, the first connecting plate 130 and the light shield 300 to swing. The first position adjustment mechanism cooperates with the second position adjustment mechanism 180 to effectively adjust the angle between the axis of the sunshade 300 and the vertical direction, ensuring that the sunshade 300 falls vertically, and effectively preventing the sunshade 300 from hitting protruding parts such as the star sensor.

[0039] Specifically, in the exemplary embodiment, the first position adjustment mechanism 170 includes a first fixed plate 171 and four floating oil cylinders 172. One side of the first fixed plate 171 is fixedly connected to the side wall of the guide ring 120, and can move up and down with the guide ring 120. The ends of the cylinders of the four floating oil cylinders 172 away from the piston rod are respectively hinged at the four corners of the first fixed plate 171, and the ends of the piston rods away from the cylinders are respectively hinged at the four corners of the first connecting plate 130. With the help of the four floating oil cylinders 172, the first connecting plate 130 can be driven to move horizontally or obliquely in the vertical plane, thereby driving the light shield 300 to move horizontally or obliquely. It should be noted that a limiting hole is provided on the upper side wall of the guide ring 120, and correspondingly, a limiting hole is also provided on the guide rod 110. When the first position adjustment mechanism 170 needs to work, the limiting pin is inserted into the limiting holes on the guide ring 120 and the guide rod 110 to limit the guide ring 120 from rotating around its own circumference. When the first position adjustment mechanism 170 stops working, the limiting pin is separated from the limiting holes on the guide ring 120 and the guide rod 110 to release the restriction on the guide ring 120 .

[0040] Specifically, in the exemplary embodiment, the second position adjustment mechanism 180 includes a second fixed plate 181, a rotating shaft 182, a third fixed plate 183 and a servo motor 184. One side of the second fixed plate 181 is fixedly connected to one side of the second connecting plate 150. The bottom end of the rotating shaft 182 is rotatably connected to the second fixed plate 181. The middle part of the bottom surface of the third fixed plate 183 is fixedly connected to the top end of the rotating shaft 182, and one side is fixedly connected to the bottom end of the guide rod 110. The servo motor 184 is installed at the bottom end of the second fixed plate 181, and the output shaft is fixedly connected to the bottom end of the rotating shaft 182, which can drive the rotating shaft 182 to rotate within a certain angle range, thereby driving the third fixed plate 183 to rotate, thereby driving the guide rod 110, the guide ring 120, the first position adjustment mechanism 170, the first connecting plate 130 and the light shield 300 to swing.

[0041] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0045] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A large-caliber and large-stroke sunshade installation guide device, characterized in that: include: A guide rod is arranged vertically, and the bottom end of the guide rod is suitable for being mounted on a star body; The guide ring is sleeved on the guide rod so as to move up and down along the guide rod, and is suitable for being installed on the outer wall of the bottom end of the light shield.

2. The large-aperture and large-stroke light shield installation guide device according to claim 1, characterized in that: Also includes: A first connecting plate is detachably mounted on the heat sink fixing member of the sunshade through a pressing sheet; The first connecting plate is connected to the guide ring.

3. The large-aperture and large-stroke light shield installation guide device according to claim 2, characterized in that: Also includes: The first position adjustment mechanism is connected to the guide ring and the first connecting plate respectively, and is used to drive the first connecting plate to move horizontally or obliquely in a vertical plane.

4. The large-aperture and large-stroke light shield installation guide device according to claim 3, characterized in that: The first position adjustment structure comprises: A first fixing plate, one side of which is fixedly connected to the side wall of the guide ring; There are four floating oil cylinders, one end of the cylinder away from the piston rod is hinged to the four corners of the first fixed plate, and one end of the piston rod away from the cylinder is hinged to the four corners of the first connecting plate.

5. The large-aperture and large-stroke light shield installation guide device according to claim 1, characterized in that: Also includes: The second connecting plate is suitable for being detachably mounted on the star body; the connecting plate is connected to the bottom end of the guide rod.

6. The large-aperture and large-stroke light shield installation guide device according to claim 5, characterized in that: Also includes: The second position adjustment mechanism is respectively connected to the second connecting plate and the bottom end of the guide rod, and is used to drive the guide rod to swing.

7. The large-aperture and large-stroke light shield installation guide device according to claim 6, characterized in that: The second position adjustment mechanism comprises: A second fixing plate, one side of which is fixedly connected to a side surface of the second connecting plate; A rotating shaft, the bottom end of which is rotatably connected to the second fixing plate; A third fixing plate, the bottom surface of which is fixedly connected to the top end of the rotating shaft, and one side of which is fixedly connected to the bottom end of the guide rod; The servo motor is mounted on the bottom end of the second fixing plate, and the output shaft is fixedly connected to the bottom end of the rotating shaft.

8. The large-aperture and large-stroke light shield installation guide device according to any one of claims 1 to 7, characterized in that: A guide head is formed at the top end of the guide rod.

9. The large-aperture and large-stroke light shield installation guide device according to any one of claims 1 to 7, characterized in that: The guide rod is a hollow structure.

Images