Intersatellite laser communication terminal

Abstract

The present invention relates to the field of laser communication technology, and in particular to an intersatellite laser communication terminal, comprising a base, an azimuth turntable, a pitch turntable and a rigid locking assembly; the azimuth turntable can be rotatably mounted on the top of the base around its own axis; the pitch turntable can be rotatably mounted on one side of the azimuth turntable around its own axis; a first limiting cylinder is provided on one side of the pitch turntable; and a second limiting cylinder is provided on one side of the azimuth turntable. Before launching, the rigid locking assembly moves upward to be inserted into the first limiting cylinder and the second limiting cylinder, thereby limiting the rotation of the pitch turntable and the azimuth turntable. After entering orbit, the rigid locking assembly moves downward to disengage from the first limiting cylinder and the second limiting cylinder, thereby releasing the restriction on the pitch turntable and the azimuth turntable. Compared with the traditional form of limiting the relative rotation of the sub-components of the intersatellite laser communication terminal by pulling with ropes, the fixed frequency of the intersatellite laser communication terminal is improved to avoid resonance during launching.

Description

Technical Field

[0001] The present invention relates to the field of laser communication technology, and in particular to an inter-satellite laser communication terminal. Background Art

[0002] The transmission rate of microwave communication has reached its limit. In order to further improve the information transmission rate, the use of laser as an information carrier has become an inevitable choice. For intersatellite laser communication terminals, before the satellite is launched into orbit, its sub-components need to be restricted from relative rotation. After entering orbit, the restrictions on its sub-components are lifted, allowing the sub-components to rotate relative to each other to better perform the mission.

[0003] At present, before launching into orbit, the relative rotation of the sub-components of the intersatellite laser communication terminal is restricted by rope pulling. The fixed frequency of the system composed of the rope and the intersatellite laser communication terminal is relatively low, generally below 100HZ. Therefore, during launch, the system composed of the rope and the intersatellite laser communication terminal is very likely to resonate, causing damage to the intersatellite laser communication terminal. Therefore, how to prevent the traditional intersatellite laser communication terminal from being damaged during launch has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The invention provides an inter-satellite laser communication terminal, which is used to solve the problem of how to prevent the traditional inter-satellite laser communication terminal from being damaged during transmission.

[0005] The present invention provides an inter-satellite laser communication terminal, comprising:

[0006] Pedestal;

[0007] An azimuth turntable is mounted on the top of the base so as to be rotatable around its own axis;

[0008] The pitch turntable is rotatably mounted on one side of the azimuth turntable around its own axis, and a first limiting cylinder is arranged on the side close to the azimuth turntable; a second limiting cylinder is arranged on the side of the azimuth turntable close to the pitch turntable;

[0009] A rigid locking assembly is movably installed up and down on one side of the base close to the pitch turntable. It can move upward to be inserted into the first limit cylinder and the second limit cylinder, thereby limiting the rotation of the pitch turntable and the azimuth turntable, or move downward to disengage from the first limit cylinder and the second limit cylinder, thereby releasing the restriction on the rotation of the pitch turntable and the azimuth turntable.

[0010] In some embodiments, the rigid locking assembly includes:

[0011] The first plug rod has a vertical axis and is installed on a side of the base close to the pitch turntable so as to be movable up and down, and the top end of the first plug rod can be inserted into or separated from the second limiting cylinder;

[0012] A connecting rod, the axis of which is horizontally arranged, and one end of which is fixedly connected to the lower part of the first plug rod;

[0013] The second insertion rod has a vertically arranged axis, a bottom end of which is fixedly connected to the other end of the connecting rod, and a top end of which can be inserted into or separated from the first limiting cylinder.

[0014] In some of these embodiments, the rigid locking assembly further comprises:

[0015] The first anti-slip portion is installed at the top end of the first insertion rod; when the top end of the first insertion rod is inserted into the second limiting tube, the first anti-slip portion is unfolded; before the top end of the first insertion rod is separated from the second limiting tube, the first anti-slip portion is retracted;

[0016] The second anti-slip portion is installed on the top end of the second insertion rod; when the top end of the second insertion rod is inserted into the first limiting tube, the second anti-slip portion is unfolded; before the top end of the second insertion rod is separated from the first limiting tube, the second anti-slip portion is retracted.

[0017] In some embodiments, the first anti-slip portion comprises:

[0018] A fixing seat, fixedly mounted on the top end of the first plug rod;

[0019] A movable seat is slidably mounted on the upper portion of the first insertion rod;

[0020] The top of the umbrella rib is hinged to the fixed seat, and the bottom is hinged to the movable seat;

[0021] The movable seat can move up and down to expand or close the ribs;

[0022] The second anti-slip part has the same structure as the first anti-slip part; the fixed seat of the second anti-slip part is fixedly installed on the top of the second insertion rod, and the movable seat can be slidably sleeved on the upper part of the second insertion rod.

[0023] In some embodiments, the first anti-slip portion further comprises:

[0024] The linear driver is installed inside the first plunger, the output shaft is arranged upward, and the output shaft is fixedly connected to the movable seat.

[0025] In some of these embodiments, the rigid locking assembly further comprises:

[0026] The output shaft of the rotary driver is in driving connection with the bottom end of the first plunger and is used to drive the first plunger to move up and down.

[0027] In some embodiments, a clearance hole is formed on the side wall of the upper portion of the first insertion rod.

[0028] In some of the embodiments, a guide cylinder is further provided on a side of the base close to the pitch turntable; the guide cylinder is for the first insertion rod to pass through.

[0029] In some of these embodiments, the elevation stage is a reflecting telescope.

[0030] In some of the embodiments, the tops of the first limiting cylinder and the second limiting cylinder are respectively provided with in-position detection sensors.

[0031] The beneficial effects of the present invention are as follows: The intersatellite laser communication terminal of the present invention is provided with a rigid locking assembly. Before launching, the rigid locking assembly can move upward to be inserted into the first limiting cylinder and the second limiting cylinder, thereby limiting the rotation of the pitch turntable and the azimuth turntable. After the intersatellite laser communication terminal enters orbit, the rigid locking assembly moves downward to disengage from the first limiting cylinder and the second limiting cylinder, thereby releasing the restriction on the rotation of the pitch turntable and the azimuth turntable. Compared with the traditional form of limiting the relative rotation of the subcomponents of the intersatellite laser communication terminal by pulling with ropes, the fixed frequency of the intersatellite laser communication terminal can be increased to above 400HZ. Therefore, during launch, the intersatellite laser communication terminal is not prone to resonance, thereby avoiding damage to the intersatellite laser communication terminal. At the same time, the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of some specific embodiments of an inter-satellite laser communication terminal of the present invention;

[0033] Figure 2 yes Figure 1 The structural schematic diagrams of some specific embodiments of the rigid locking assembly in the intersatellite laser communication terminal shown;

[0034] Figure 3 yes Figure 2 A partial enlarged view of area A.

[0035] In the accompanying drawings, 110, base; 120, azimuth turntable; 130, pitch turntable; 140, rigid locking assembly; 141, first plug rod; 1411, clearance hole; 142, connecting rod; 143, second plug rod; 144, first anti-slip portion; 1441, fixed seat; 1442, movable seat; 1443, rib; 1444, linear drive; 145, second anti-slip portion; 146, rotary drive. DETAILED DESCRIPTION

[0036] 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.

[0037] As in the background technology, the relative rotation of the sub-components of the intersatellite laser communication terminal is limited by the rope pulling method. The fixed frequency of the system composed of the rope and the intersatellite laser communication terminal is relatively low, generally below 100HZ. Therefore, during transmission, the system composed of the rope and the intersatellite laser communication terminal is very likely to resonate, causing damage to the intersatellite laser communication terminal. Therefore, how to prevent the traditional intersatellite laser communication terminal from being damaged during transmission has become a technical problem that needs to be solved urgently by those skilled in the art.

[0038] To solve the above problems, refer to Figure 1 , Figure 2 and Figure 3 The present invention provides an intersatellite laser communication terminal, comprising a base 110, an azimuth turntable 120, a pitch turntable 130 and a rigid locking assembly 140. The base 110 is used to support the azimuth turntable 120, the pitch turntable 130 and the rigid locking assembly 140. Figure 1 As shown in the direction of one of the arrows, the azimuth turntable 120 is mounted on the top of the base 110 so as to be rotatable around its own axis. Figure 1 As shown in the direction of another arrow in the figure, the pitch turntable 130 is rotatably mounted on one side of the azimuth turntable 120 around its own axis. A first limiting cylinder is provided at the lower portion of the side of the pitch turntable 130 close to the azimuth turntable 120. A second limiting cylinder is provided at the lower portion of the side of the azimuth turntable 120 close to the pitch turntable 130. The rigid locking assembly 140 is movably mounted on one side of the base 110 close to the pitch turntable 130. Before launching, the rigid locking assembly 140 can move upward to be inserted into the first limiting cylinder and the second limiting cylinder, thereby limiting the rotation of the pitch turntable 130 and the azimuth turntable 120. After the intersatellite laser communication terminal enters orbit, the rigid locking assembly 140 moves downward to disengage from the first limiting cylinder and the second limiting cylinder, thereby releasing the restriction on the rotation of the pitch turntable 130 and the azimuth turntable 120. Compared with the traditional method of limiting the relative rotation of the sub-components of the intersatellite laser communication terminal by pulling with ropes, the fixed frequency of the intersatellite laser communication terminal can be increased to above 400HZ. Therefore, during transmission, the intersatellite laser communication terminal is not prone to resonance, thus avoiding damage to the intersatellite laser communication terminal. At the same time, the reliability is higher.

[0039] In some embodiments, the rigid locking assembly 140 includes a first plug rod 141, a connecting rod 142, and a second plug rod 143. The axis of the first plug rod 141 is vertically arranged, and is installed on the side of the base 110 close to the pitch turntable 130 so as to be movable up and down. The top end of the first plug rod 141 can be inserted into the second limiting cylinder to limit the rotation of the azimuth turntable 120 around its own axis, or be separated from the second limiting cylinder to release the restriction on the azimuth turntable 120. The axis of the connecting rod 142 is horizontally arranged, and one end is fixedly connected to the lower part of the first plug rod 141. The axis of the second plug rod 143 is vertically arranged, and the bottom end is fixedly connected to the other end of the connecting rod 142. The top end of the second plug rod 143 can be inserted into the first limiting cylinder to limit the rotation of the pitch turntable 130 around its own axis, or be separated from the first limiting cylinder to release the restriction on the pitch turntable 130. In this way, the fixed frequency of the intersatellite laser communication terminal can be effectively improved to avoid resonance when the intersatellite laser communication terminal is transmitting. It should be noted that when the first insertion rod 141 moves up and down, the connecting rod 142 and the second insertion rod 143 move up and down along with the first insertion rod 141 .

[0040] In other embodiments, reference Figure 2The rigid locking assembly 140 includes a first plug rod 141, a connecting rod 142, a second plug rod 143, a first anti-slip portion 144 and a second anti-slip portion 145. The axis of the first plug rod 141 is vertically arranged, and is installed on the side of the base 110 close to the pitch turntable 130 so as to be movable up and down. The top end of the first plug rod 141 can be inserted into the second limiting cylinder to limit the rotation of the azimuth turntable 120 around its own axis, or be separated from the second limiting cylinder to release the restriction on the azimuth turntable 120. The axis of the connecting rod 142 is horizontally arranged, and one end is fixedly connected to the lower part of the first plug rod 141. The axis of the second plug rod 143 is vertically arranged, and the bottom end is fixedly connected to the other end of the connecting rod 142. The top end of the second plug rod 143 can be inserted into the first limiting cylinder to limit the rotation of the pitch turntable 130 around its own axis, or be separated from the first limiting cylinder to release the restriction on the pitch turntable 130. In this way, the fixed frequency of the intersatellite laser communication terminal can be effectively improved to avoid resonance when the intersatellite laser communication terminal is transmitting. The first anti-detachment portion 144 is installed at the top of the first plug rod 141. When the top of the first plug rod 141 is inserted into the second limiting tube, the first anti-detachment portion 144 is unfolded to improve the stability of the contact connection between the first plug rod 141 and the second limiting tube. Before the top of the first plug rod 141 is separated from the second limiting tube, the first anti-detachment portion 144 is retracted to facilitate the first plug rod 141 to be separated from the second limiting tube. The second anti-detachment portion 145 is installed at the top of the second plug rod 143. When the top of the second plug rod 143 is inserted into the first limiting tube, the second anti-detachment portion 145 is unfolded to improve the stability of the contact connection between the second plug rod 143 and the first limiting tube. Before the top of the second plug rod 143 is separated from the first limiting tube, the second anti-detachment portion 145 is retracted to facilitate the second plug rod 143 to be separated from the first limiting tube.

[0041] Specifically, in the example, Figure 2 and Figure 3As shown, the first anti-slip portion 144 includes a fixed seat 1441, a movable seat 1442, an umbrella rib 1443 and a linear driver 1444. The fixed seat 1441 is fixedly mounted on the top of the first plug rod 141. The movable seat 1442 is slidably mounted on the upper part of the first plug rod 141. The top of the umbrella rib 1443 is hinged to the fixed seat 1441, and the bottom is hinged to the movable seat 1442. The movable seat 1442 can move up and down to expand or fold the umbrella rib 1443. The linear driver 1444 is installed inside the first plug rod 141, and the output shaft is arranged upward. The output shaft is fixedly connected to the movable seat 1442 and can drive the movable seat 1442 to move up and down. It should be noted that in order to facilitate the connection between the linear driver 1444 and the inner wall of the movable seat 1442, a clearance hole 1411 is opened on the side wall of the upper part of the first plug rod 141. The second anti-slip part 145 has the same structure as the first anti-slip part 144. The fixed seat 1441 of the second anti-slip part 145 is fixedly installed on the top of the second plug rod 143, and the movable seat 1442 can be slidably sleeved on the upper part of the second plug rod 143 up and down. The linear driver 1444 of the second anti-slip part 145 is installed inside the second plug rod 143, and the output shaft is arranged upward. The output shaft is fixedly connected to the movable seat 1442 of the second anti-slip part 145, and can drive the movable seat 1442 of the second anti-slip part 145 to move up and down. It should be noted that in order to facilitate the connection between the linear driver 1444 of the second anti-slip part 145 and the inner wall of the movable seat 1442 of the second anti-slip part 145, a clearance hole 1411 is also opened on the side wall of the upper part of the second plug rod 143.

[0042] Preferably, the support rod used for the ribs 1443 of the first anti-detachment part 144 has a certain elasticity and can be bent to a certain extent, which plays a certain buffering role on the action force between the first insertion rod 141 and the second limiting cylinder, thereby preventing the second limiting cylinder from falling off from the azimuth turntable 120 and becoming ineffective. The support rod used for the ribs 1443 of the second anti-detachment part 145 has a certain elasticity and can be bent to a certain extent, which plays a certain buffering role on the action force between the second insertion rod 143 and the first limiting cylinder, thereby preventing the first limiting cylinder from falling off from the pitch turntable 130 and becoming ineffective.

[0043] Preferably, the linear drive 1444 is an electric push rod.

[0044] Specifically, in the exemplary embodiment, the rigid locking assembly 140 further includes a rotary driver 146. The output shaft of the rotary driver 146 is transmission-connected to the bottom end of the first plug rod 141, and is used to drive the first plug rod 141 to move up and down. An in-place detection sensor is provided in the first limiting cylinder, and is used to detect whether the top end of the first plug rod 141 is in place. An in-place detection sensor is provided at the top of the second limiting cylinder, and is used to detect whether the top end of the second plug rod 143 is in place. The intersatellite laser communication terminal further includes a controller, which is electrically connected to the in-place detection sensor in the first limiting cylinder, the in-place detection sensor in the second limiting cylinder, the linear driver 1444 of the first anti-slipping part 144, the linear driver 1444 of the second anti-slipping part 145, and the rotary driver 146, respectively, and can receive detection signals from the in-place detection sensors to control whether the linear driver 1444 and the rotary driver 146 are working.

[0045] Preferably, two guide cylinders are further provided on one side of the base 110 close to the pitch turntable 130. The two guide cylinders are respectively used for the first insertion rod 141 to pass through so as to restrict the movement direction of the first insertion rod 141.

[0046] Preferably, the elevation turntable 130 is a reflecting telescope, which uses a combination of curved and flat mirrors to reflect light and form an image.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", 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.

[0051] 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. An intersatellite laser communication terminal, characterized in that: include: Pedestal; An azimuth turntable is mounted on the top of the base so as to be rotatable around its own axis; The pitch turntable is rotatably mounted on one side of the azimuth turntable around its own axis, and a first limiting cylinder is arranged on the side close to the azimuth turntable; a second limiting cylinder is arranged on the side of the azimuth turntable close to the pitch turntable; A rigid locking assembly is installed on a side of the base close to the pitch turntable so as to be movable up and down, and can be moved upward to be inserted into the first limiting cylinder and the second limiting cylinder to thereby limit the rotation of the pitch turntable and the azimuth turntable, or moved downward to be separated from the first limiting cylinder and the second limiting cylinder to thereby release the restriction on the rotation of the pitch turntable and the azimuth turntable; The rigid locking assembly comprises: A first insertion rod, with a vertical axis, is installed on a side of the base close to the pitch turntable so as to be movable up and down, and a top end of the first insertion rod can be inserted into or separated from the second limiting cylinder; A connecting rod, the axis of which is horizontally arranged, and one end of which is fixedly connected to the lower part of the first insertion rod; A second plug rod, the axis of which is vertically arranged, the bottom end of which is fixedly connected to the other end of the connecting rod, and the top end of which can be inserted into or separated from the first limiting cylinder; A first anti-slip portion is installed at the top end of the first insertion rod; when the top end of the first insertion rod is inserted into the second limiting tube, the first anti-slip portion is unfolded; before the top end of the first insertion rod is separated from the second limiting tube, the first anti-slip portion is retracted; A second anti-slip portion is installed at the top end of the second insertion rod; when the top end of the second insertion rod is inserted into the first limiting tube, the second anti-slip portion is unfolded; before the top end of the second insertion rod is separated from the first limiting tube, the second anti-slip portion is retracted; The first anti-slip portion comprises: A fixing seat, fixedly mounted on the top end of the first plug rod; A movable seat is slidably mounted on the upper portion of the first insertion rod; The top of the umbrella rib is hinged to the fixed seat, and the bottom is hinged to the movable seat; The movable seat can move up and down to expand or fold the umbrella ribs; The second anti-slip part has the same structure as the first anti-slip part; the fixed seat of the second anti-slip part is fixedly installed on the top of the second insertion rod, and the movable seat can be slidably mounted on the upper part of the second insertion rod.

2. The intersatellite laser communication terminal according to claim 1, characterized in that: The first anti-slip portion further comprises: The linear driver is installed inside the first insertion rod, the output shaft is arranged upward, and the output shaft is fixedly connected to the movable seat.

3. The intersatellite laser communication terminal according to claim 1, characterized in that: The rigid locking assembly also includes: The output shaft of the rotary driver is in driving connection with the bottom end of the first plunger, and is used to drive the first plunger to move up and down.

4. The intersatellite laser communication terminal according to claim 3, characterized in that: A clearance hole is provided on the side wall of the upper part of the first insertion rod.

5. The intersatellite laser communication terminal according to claim 1, characterized in that: A guide cylinder is also arranged on one side of the base close to the pitch turntable; the guide cylinder is used for the first insertion rod to pass through.

6. The inter-satellite laser communication terminal according to any one of claims 1 to 5, characterized in that: The pitch turntable is a reflecting telescope.

7. The inter-satellite laser communication terminal according to any one of claims 1 to 5, characterized in that: The tops of the first limiting cylinder and the second limiting cylinder are respectively provided with in-position detection sensors.

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