Light and small periscopic type pointing mechanism

Abstract

The invention relates to the field of space communication, in particular to a light and small periscopic type pointing mechanism which comprises a rotating system, multiple sets of pointing mirror assemblies and a locking assembly, the rotating system comprises multiple sets of rotating assemblies, the rotating assemblies are sequentially and rotationally connected in an end-to-end mode, and the interiors of the rotating assemblies communicate with one another to form a light path channel; the multiple sets of pointing mirror assemblies are arranged on the rotating assemblies in a one-to-one correspondence mode, and a certain included angle is formed between every two adjacent sets of pointing mirror assemblies so that light path reflection can be conducted; the locking assembly is arranged on the rotating system so as to limit the angle of the adjacent rotating assembly. The method has the advantages that the complexity in the whole machine assembling process is greatly reduced, the construction period in the production process is shortened, and batch production is facilitated.

Description

Technical Field

[0001] The present application relates to the field of space communication, and in particular to a light and small periscope pointing mechanism. Background Art

[0002] Commercial space refers to space activities that are market-driven and operated using a business model. Currently, the commercial space industry has become a strategic emerging industry that has attracted much attention. The scale of the global commercial space industry is growing rapidly. According to the latest statistics from the Satellite Industry Association of the United States, the satellite industry accounts for 73% of the global aerospace industry's revenue, the largest share of global aerospace industry revenue, mainly including satellite manufacturing industry revenue, satellite service industry and ground equipment manufacturing industry revenue.

[0003] Satellite communication is one of the main application areas of the commercial satellite industry. The key points of its industrial development are high frequency and low cost. The satellite manufacturing industry faces difficulties and challenges such as lightweight, short construction period and mass production. For space laser communication, the pointing mechanism is the core component to realize the scanning, capturing and tracking processes. It is widely used in aerospace technology, ship technology and other fields. The pointing mechanism realizes the stability of the system optical axis and the tracking of the target in a space with complex interference factors, thereby completing the reception and transmission of free light signals. Currently, there are four common structural forms of pointing mechanisms. The first is the longitude and latitude pointing mechanism, which loads the entire optical system on a single axis, so its structural size is generally large, resulting in waste in space utilization and launch cost; the second is the swing mirror pointing mechanism, which has a compact structure and a small overall envelope, but its single-axis pitch rotation range is very small, so its application scenarios are limited; the third is the Kudet pointing mechanism, which reduces the overall envelope by rotating the light guide path with the axis, but its structural characteristics greatly increase the difficulty of controlling the pointing mechanism; the fourth is the periscope pointing mechanism, which has a larger rotation range and lighter weight, but is more difficult to control.

[0004] The existing periscope pointing mechanism used in the commercial space mode has a complex structure, with various types of components, relatively difficult assembly, and a long construction period, and cannot better adapt to the operating mode of commercial spaceflight. Summary of the invention

[0005] In order to solve the problems of complex structure, diverse components and difficult assembly of periscope pointing mechanisms, the present application provides a lightweight and compact periscope pointing mechanism.

[0006] The present application provides a lightweight periscope pointing mechanism that adopts the following technical solutions:

[0007] A light and small periscope pointing mechanism comprises a rotation system, a plurality of pointing mirror assemblies and a locking assembly, wherein the rotation system comprises a plurality of rotating assemblies, the rotating assemblies are connected to each other by rotation at the ends, and the interiors of the rotating assemblies are interconnected to form an optical path channel; the plurality of pointing mirror assemblies are arranged one by one on each rotating assembly, and two adjacent pointing mirror assemblies form a certain angle for optical path reflection; the locking assembly is arranged on the rotation system to limit the angles of adjacent rotating assemblies.

[0008] By adopting the above technical scheme, the rotating component can be used to drive the pointing mirror mechanism to rotate at multiple angles, so that multi-directional observation can be carried out through the pointing mirror mechanism, which is more flexible in practical application. The locking component can be used to limit the rotating component, thereby increasing the stability during observation, improving the observation effect, and increasing the stability during assembly and transportation, thereby avoiding collision and damage caused by the rotation of the rotating component. The rotating system composed of multiple groups of identical rotating component locks makes the construction of the rotating system simpler. At the same time, the component selection between each rotating component can be unified, so that the rotating components have strong interchangeability, thereby greatly reducing the complexity of the whole machine assembly process, which is beneficial to reducing the construction period in the production process and facilitating mass production.

[0009] Optionally, the rotating assembly includes a rotating shaft, a rotating seat and a driving member, the rotating shaft is hollow inside and has openings at both ends arranged at a certain angle, the pointing mirror assembly mechanism is arranged on the rotating shaft, the rotating shaft rotates coaxially with the rotating seat, and the driving member is arranged in the rotating seat to drive the rotating shaft to rotate.

[0010] By adopting the above technical solution and utilizing the rotating shaft and the rotating seat, the structural simplification of components is greatly achieved, thereby increasing the weight of the entire machine and facilitating transportation, installation and use. The rotating seat provides a good rotation coaxial line for the rotating shaft, making the rotation of the rotating shaft more stable. At the same time, the rotating shaft is driven by a driving member, thereby improving the degree of automation during the use of the entire machine and also well controlling the rotation accuracy.

[0011] Optionally, a grating encoder is arranged in the rotating seat to detect the rotation angle of the rotating shaft.

[0012] By adopting the above technical solution, the grating encoder can provide the rotation position data at any time during the rotation of the shaft, so that the rotation position of the whole mechanism can be judged more conveniently, which is convenient for the user to record the coordinates of the target object.

[0013] Optionally, a window for installing the pointing mirror assembly is provided on the rotating shaft, and a boss is provided on the edge of the window to shield external light between the rotating shaft and the pointing mirror assembly.

[0014] By adopting the above technical solution, the connecting gap between the pointing mirror assembly and the rotating shaft can be blocked by the boss, thereby isolating the external light from the light inside the pointing mechanism, thereby avoiding the influence of the external light on the observation optical path and greatly improving the clarity of observation.

[0015] Optionally, a limiting member is provided on the rotating shaft, and a limiting boss which can contact the limiting member is provided on the rotating seat, and the limiting member and the limiting boss are in conflict with each other to limit the rotation angle between the rotating shaft and the rotating seat.

[0016] By adopting the above technical solution, the rotation range of the shaft can be limited by using the limiter and the limiter boss, thereby avoiding the phenomenon that the shaft collides with its auxiliary parts due to excessive rotation. At the same time, the flexibility of the installation of the limiter can be used to adjust the rotation angle of the shaft to a certain extent, so that the overall pointing mechanism can be more flexibly adjusted according to the installation and use environment, and better match the use environment.

[0017] Optionally, a cable clip is provided outside the rotating assembly for fixing the connecting cable.

[0018] By adopting the above technical solution, the cable clip for fixing the cable is set outside the rotating component, which reduces the phenomenon of cable twisting inside the rotation. After the cables are arranged, they can be dynamically stretched with the rotation of the shaft, reducing the torque of cable deformation and increasing the flexibility of the pointing mechanism.

[0019] Optionally, the pointing mirror assembly includes a mirror body, a support member and a cover body, wherein the mirror body is disposed on the support member to be connected to the rotating assembly, and the cover body is disposed outside the rotating assembly and covers the mirror body inside.

[0020] By adopting the above technical scheme, the mirror body is set on the rotating assembly by using the support member, which reduces the direct installation of the mirror body and the rotating assembly, avoids the damage of the bolts to the mirror body after repeated installation and disassembly of the mirror body, and increases the service life of the mirror body; at the same time, friction cannot be avoided during the rotation of the shaft, so some torsional deformation will occur. The support member can form a certain buffer between the support member and the shaft, reducing the deformation of the mirror body with the shaft, improving the observation effect, and reducing the damage to the mirror body.

[0021] Optionally, an embedding block is further provided between the mirror body and the support member to facilitate the installation of the mirror body.

[0022] By adopting the above technical solution, the direct installation between the support member and the mirror body can be reduced by using the embedding block between the mirror body and the support member. At the same time, the design of the mirror body installation structure is also reduced by using the embedding block. While simplifying the design of the mirror body, the connection strength of the mirror body is increased, which plays a good role in connection transition.

[0023] Optionally, the locking assembly includes a locking shaft, a locking bolt and a locking cover, the locking shaft is fixedly connected to the rotating seat, and the locking cover is arranged on the top of the locking shaft and is connected to the locking shaft through the locking bolt.

[0024] By adopting the above technical solution, the top of the locking shaft is covered and connected by a locking cover. The connection accuracy between the rotating shaft and the rotating seat is increased through the limiting effect between the locking cover and the locking shaft. The locking cover is connected to the azimuth axis to achieve the locking effect. At the same time, the space utilization between components is improved, and the pointing mechanism is made lightweight.

[0025] Optionally, an elastic member is provided between the locking cover and the locking shaft to push the locking cover away from the locking shaft.

[0026] By adopting the above technical solution and utilizing the elastic member, the locking cover can be pushed away from the locking shaft after the locking mechanism is unlocked, thereby facilitating the unlocking of the pointing mechanism. At the same time, the elasticity of the elastic member can be utilized to buffer the impact force between the locking cover and the locking shaft during the process of the locking cover approaching the locking shaft, thereby avoiding rigid collision between the two and reducing damage.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The rotating assembly can drive the pointing mirror mechanism to rotate at multiple angles, so that the pointing mirror mechanism can be used for multi-directional observation, which is more flexible in practical use. The locking assembly can be used to limit the rotating assembly, thereby increasing the stability during observation, improving the observation effect, and increasing the stability during assembly and transportation, avoiding collision and damage caused by the rotation of the rotating assembly. The rotating system composed of multiple sets of the same rotating assembly locks makes the construction of the rotating system simpler. At the same time, the selection of components between the rotating assemblies can be unified, so that the rotating assemblies have strong interchangeability, thereby greatly reducing the complexity of the whole machine assembly process, which is conducive to reducing the construction period in the production process and facilitating batch production;

[0029] 2. The use of the rotating shaft and the rotating seat greatly simplifies the structure of the components, thereby improving the weight of the whole machine, facilitating transportation, installation and use. The rotating seat provides a good rotation coaxial line for the rotating shaft, making the rotation of the rotating shaft more stable. At the same time, the driving member drives the rotating shaft, which improves the degree of automation during the use of the whole machine, and also controls the rotation accuracy very well;

[0030] 3. The mirror body is set on the rotating assembly by using the support, which reduces the direct installation of the mirror body and the rotating assembly, avoids the damage of the bolts to the mirror body after repeated installation and disassembly of the mirror body, and increases the service life of the mirror body; at the same time, friction cannot be avoided during the rotation of the shaft, so some torsional deformation will be generated. The support can form a certain buffer between the support and the shaft, reducing the deformation of the mirror body with the shaft, improving the observation effect, and reducing the damage to the mirror body. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a light and small periscope pointing mechanism of the present application.

[0032] Figure 2 It is a three-dimensional diagram of a lightweight periscope pointing mechanism in an embodiment of the present application.

[0033] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0034] Figure 4 It is a cross-sectional view of a lightweight periscope pointing mechanism in an embodiment of the present application.

[0035] Figure 5 It is a cross-sectional view of the rotating component in the embodiment of the present application.

[0036] Figure 6 In the embodiment of this application Figure 5 Enlarged view of point B in the middle.

[0037] Figure 7 It is an exploded view of the pointing mirror assembly in the embodiment of the present application.

[0038] Figure 8 It is a cross-sectional view of the locking assembly in an embodiment of the present application.

[0039] Explanation of the reference numerals: 10. Rotation system; 1. Multiple groups of rotating components; 11. Rotating shaft; 111. Limiting member; 112. Window; 113. Flange; 12. Rotating seat; 121. Grating encoder seat; 122. Boss; 13. Driving member; 14. Bearing; 15. Bearing isolation ring; 16. Bearing pressure ring; 17. Grating encoder; 18. Line card; 2. Pointing mirror assembly; 21. Mirror body; 22. Support member; 23. Cover body; 24. Block; 3. Locking assembly; 31. Locking shaft; 32. Locking bolt; 33. Locking cover; 34. Elastic member. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-8 This application is described in further detail.

[0041] The embodiment of the present application discloses a light and small periscope pointing mechanism. Figure 1 -to Figure 8 The light and small periscope pointing mechanism includes a rotation system 10, multiple groups of pointing mirror assemblies 2 and a locking assembly 3. The rotation system 10 includes multiple groups of rotating assemblies 1. In the embodiment of the present application, the number of rotating assemblies 1 is taken as two groups. In the two groups of rotating assemblies 1, the head end of one rotating assembly 1 is rotatably connected to the tail end of the other rotating assembly 1, and the two groups of rotating assemblies 1 are internally connected to each other to form an optical path channel. Preferably, the rotating assembly 1 is L-shaped as a whole, and the two groups of rotating assemblies 1 are orthogonal, wherein one group of rotating assemblies 1 rotates along the vertical axis, and the other group of rotating assemblies 1 rotates along the horizontal axis. The pointing mirror assemblies 2 are arranged on each rotating assembly 1 in a one-to-one correspondence, and the two adjacent groups of pointing mirror assemblies 2 are at a certain angle for optical path reflection; preferably, the two groups of pointing mirror assemblies 2 are arranged at 45° to the axis of the rotating assembly 1, and the two groups of pointing mirror assemblies 2 are arranged opposite to each other. The locking assembly 3 is arranged on the rotation system 10 to limit the angle of the adjacent rotating assemblies 1.

[0042] The rotating component 1 can be used to drive the pointing mirror mechanism to rotate at multiple angles, so that multi-directional observation can be performed through the pointing mirror mechanism, which is more flexible in practical use. The locking component 3 can be used to limit the rotating component 1, thereby increasing stability during observation, improving observation effects, and increasing stability during assembly and transportation, thereby avoiding collisions and damages caused by the rotation of the rotating component 1. The rotating system 10 composed of multiple groups of identical rotating components 1 locks simplifies the construction of the rotating system 10. At the same time, the component selection between the rotating components 1 can be unified, so that the rotating components 1 have strong interchangeability, thereby greatly reducing the complexity of the whole machine assembly process, which is beneficial to reducing the construction period in the production process and facilitating mass production.

[0043] As a preferred embodiment, the rotating assembly 1 includes a rotating shaft 11, a rotating seat 12 and a driving member 13. The rotating shaft 11 is hollow inside and has openings at both ends arranged at a certain angle. The pointing mirror assembly 2 is arranged on the rotating shaft, and the rotating shaft 11 rotates coaxially with the rotating seat 12. At least two groups of bearings 14 are arranged between the rotating shaft 11 and the rotating seat 12, and the number of bearings 14 in each group is at least two. In each group of bearings 14, a bearing isolation ring 15 is arranged between two connected bearings 14, so that the two adjacent bearings 14 will not be affected. A bearing pressure ring 16 is arranged on one side of the outermost bearing 14 of each group of bearings 14 to fix each group of bearings 14 to the rotating seat 12. The driving member 13 is arranged in the rotating seat 12 to drive the rotating shaft 11 to rotate. It should be noted that the present application does not make any specific restrictions on the materials of the rotating shaft 11 and the rotating seat 12. Preferably, it can adopt a material with high temperature adaptability, such as aluminum-based silicon carbide.

[0044] The use of the rotating shaft 11 and the rotating seat 12 greatly simplifies the structure of components, thereby increasing the weight of the entire machine and facilitating transportation, installation and use. The rotating seat 12 provides a good coaxial rotation for the rotating shaft 11, making the rotation of the rotating shaft 11 more stable. At the same time, the driving member 13 is used to drive the rotating shaft 11, thereby improving the degree of automation during the use of the entire machine and also well controlling the rotation accuracy.

[0045] As a preferred embodiment, a grating encoder 17 is provided in the rotating seat 12 to detect the rotation angle of the rotating shaft 11. A grating encoder seat 121 is provided in the rotating seat 12 for installing the grating encoder. The connection method between the grating encoder 17 and the grating encoder seat 121 is not specifically limited, and can be any one of a snap connection, an adhesive connection or a bolt connection.

[0046] The grating encoder 17 can provide the rotation position data at any time during the rotation of the shaft 11, so that the rotation position of the entire mechanism can be determined more conveniently, which is convenient for the user to record the coordinates of the target object.

[0047] As a preferred embodiment, a limit member 111 is provided on the rotating shaft 11, and a limit boss 122 that can contact the limit member 111 is provided on the rotating seat 12. The limit member 111 and the limit boss 122 are in contact with each other to limit the rotation angle between the rotating shaft 11 and the rotating seat 12. It should be noted that as a preferred connection method, the limit member 111 and the rotating shaft 11 are fixedly connected by bolts, so that the position of the limit member 111 can be adjusted; similarly, the connection between the limit boss 122 and the rotating seat 12 is also detachably connected as the best connection method, and the adjustment between the rotating shaft 11 and the rotating seat 12 is more flexible through the two-way adjustment of the limit member 111 and the limit boss 122.

[0048] The limit member 111 and the limit boss 122 can be used to limit the rotation range of the shaft 11, thereby preventing the shaft 11 from colliding with its accessory parts due to excessive rotation. At the same time, the flexibility of the installation of the limit member 111 can be used to adjust the rotation angle of the shaft 11 to a certain extent, so that the overall pointing mechanism can be adjusted more flexibly according to the installation and use environment, and better match the use environment.

[0049] As a preferred embodiment, a cable clip 18 is provided outside the rotating shaft 11 for fixing the connecting cable. Specifically, the cable clip 18 is fixedly connected to the side wall of the rotating shaft 11, and the cable clip 18 is located on the side of the rotating shaft 11. The cable is passed over the rotating shaft 11 and connected to the rotating shaft 11 through the cable clip 18. The winding direction of the rotating shaft 11 is the same as the rotation direction of the rotating shaft 11, so that when the rotating shaft 11 rotates, the cable can stretch itself.

[0050] The cable clamp 18 for fixing the cable is arranged outside the rotating assembly 1, which reduces the twisting of the cable during rotation. After the cable is arranged, it can be dynamically stretched with the rotation of the shaft 11, reducing the torque of the cable deformation and increasing the flexibility of the pointing mechanism.

[0051] As a preferred embodiment, the pointing mirror assembly 2 includes a mirror body 21, a support member 22 and a cover body 23. The mirror body 21 is arranged on the support member 22 to be connected to the rotating shaft 11. The rotating shaft 11 is provided with a window 112 for installing the pointing mirror assembly 2. After installation, the mirror body 21 is located within the range of the window 112. The cover body 23 is arranged outside the rotating assembly 1 and covers the mirror body 21 and the window 112 inside to isolate external light. An insert 24 is also arranged between the mirror body 21 and the support member 22 to facilitate the installation of the mirror body 21. A flange 113 is arranged on the edge of the window 112, and the edge of the cover body 23 overlaps with the edge of the flange 113 to block external light between the rotating shaft 11 and the pointing mirror assembly 2.

[0052] The mirror body 21 is set on the rotating assembly 1 by using the support member 22, which reduces the direct installation of the mirror body 21 and the rotating assembly 1, avoids damage to the mirror body 21 by bolts after repeated installation and disassembly of the mirror body 21, and increases the service life of the mirror body 21; at the same time, friction cannot be avoided during the rotation of the rotating shaft 11, so some torsional deformation will be generated. The support member 22 can form a certain buffer between the support member 22 and the rotating shaft 11, reducing the deformation of the mirror body 21 with the rotating shaft 11, improving the observation effect, and reducing the damage to the mirror body 21.

[0053] By using the insert block 24 between the mirror body 21 and the support member 22, the direct installation between the support member 22 and the mirror body 21 can be reduced. At the same time, the use of the insert block 24 also reduces the design of the installation structure of the mirror body 21, simplifies the design of the mirror body 21, and increases the connection strength of the mirror body 21, playing a good role in connection transition.

[0054] The boss 122 can be used to block the connection gap between the pointing mirror assembly 2 and the rotating shaft 11, thereby isolating the external light from the light inside the pointing mechanism, thereby avoiding the influence of the external light on the observation optical path and greatly improving the clarity of observation.

[0055] As a preferred embodiment, the locking assembly 3 includes a locking shaft 31, a locking bolt 32 and a locking cover 33. The locking shaft 31 is fixedly connected to the rotating seat 12, and the locking cover 33 is fixedly connected to the side wall of the rotating shaft 11, and can cover the top of the rotating shaft during the rotation of the rotating shaft 11. The locking cover 33 is arranged on the top of the locking shaft 31 and is connected to the locking shaft 31 through the locking bolt 32. It should be noted that the connection method between the locking cover 33 and the rotating shaft 11 is not specifically limited, and can be an integral setting, or can be any one of welding, bolts, etc.

[0056] Furthermore, the contact surface between the locking cover 33 and the locking shaft 31 is set to an inclined surface of 2°-5°, and the top of the locking shaft 31 is sprayed with wear-resistant material, molybdenum disulfide is used as an example in the embodiment of the present application, so as to reduce the wear between the components after the locking assembly is locked.

[0057] The design of using the locking cover 33 to cover and connect the top of the locking shaft 31 increases the connection accuracy between the rotating shaft 11 and the rotating seat 12 through the limiting effect between the locking cover 33 and the locking shaft 31. The locking cover 33 is connected to the azimuth axis to achieve the locking effect. At the same time, it also improves the space utilization between components and realizes the lightweight pointing mechanism.

[0058] As a preferred embodiment, an elastic member 34 is provided between the locking cover 33 and the locking shaft 31 . Preferably, the elastic member 34 is a compression spring, and the elastic member 34 is used to push the locking cover 33 away from the locking shaft 31 .

[0059] By utilizing the elastic member 34, after the locking mechanism is unlocked, the locking cover 33 can be pushed away from the locking shaft 31, thereby facilitating unlocking of the pointing mechanism. At the same time, by utilizing the elasticity of the elastic member 34, the impact force between the locking cover 33 and the locking shaft 31 can be buffered during the process of the locking cover 33 approaching the locking shaft 31, thereby avoiding rigid collision between the two and reducing damage.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A light and small periscope pointing mechanism, characterized in that: include A rotation system, the rotation system comprising a plurality of groups of rotation components, the rotation components are connected to each other in rotation at the ends, and the rotation components are interconnected to form an optical path channel; A plurality of groups of directional mirror assemblies, wherein the plurality of groups of directional mirror assemblies are arranged one by one on each of the rotating assemblies, and two adjacent groups of directional mirror assemblies are at a certain angle to reflect the light path; A locking assembly is arranged on the rotating system to limit the angles of adjacent rotating assemblies.

2. A light and small periscope pointing mechanism according to claim 1, characterized in that: The rotating assembly includes a rotating shaft, a rotating seat and a driving member. The rotating shaft is hollow inside and has openings at both ends arranged at a certain angle. The pointing mirror assembly mechanism is arranged on the rotating shaft. The rotating shaft rotates coaxially with the rotating seat. The driving member is arranged in the rotating seat to drive the rotating shaft to rotate.

3. A light and small periscope pointing mechanism according to claim 1, characterized in that: A grating encoder is arranged in the rotating seat to detect the rotation angle of the rotating shaft.

4. A light and small periscope pointing mechanism according to claim 1, characterized in that: A window for installing the pointing mirror assembly is arranged on the rotating shaft, and a boss is arranged at the edge of the window to shield the external light between the rotating shaft and the pointing mirror assembly.

5. The light and small periscope pointing mechanism according to claim 1, characterized in that: A limiting member is arranged on the rotating shaft, and a limiting boss which can contact with the limiting member is arranged on the rotating seat. The limiting member and the limiting boss are in conflict with each other to limit the rotation angle between the rotating shaft and the rotating seat.

6. The light and small periscope pointing mechanism according to claim 1, characterized in that: A cable clip is arranged outside the rotating assembly to fix the connecting cable.

7. The light and small periscope pointing mechanism according to claim 1, characterized in that: The pointing mirror assembly comprises a mirror body, a support member and a cover body, wherein the mirror body is arranged on the support member to be connected with the rotating assembly, and the cover body is arranged outside the rotating assembly and covers the mirror body inside.

8. The light and small periscope pointing mechanism according to claim 1, characterized in that: An insert block is also provided between the mirror body and the support member to facilitate the installation of the mirror body.

9. The light and small periscope pointing mechanism according to claim 1, characterized in that: The locking assembly comprises a locking shaft, a locking bolt and a locking cover. The locking shaft is fixedly connected to the rotating seat. The locking cover is arranged on the top of the locking shaft and is connected to the locking shaft through the locking bolt.

10. The light and small periscope pointing mechanism according to claim 1, characterized in that: An elastic member is arranged between the locking cover and the locking shaft to push the locking cover away from the locking shaft.

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