High-reliability continuous row locking device

Abstract

The application discloses a high-reliability continuous row locking device, and belongs to the technical field of aviation and aerospace multispectral imaging. The device is provided with a locking base, a manual unlocking assembly, a pair of pull rod assemblies and a flexible force splitting fuse unlocking assembly which are arranged on the locking base, a locking connecting rod and a continuous row locking piece which is rotationally connected with the locking connecting rod, and the pull rod assemblies are distributed on both sides of the locking base and are arranged in a staggered manner, one end of each pull rod assembly is flexibly connected with the fuse unlocking assembly through a pulley, the other end is rotationally connected with the locking connecting rod, and the middle part of the pull rod of each pull rod assembly is slidably connected with the locking base; the manual unlocking assembly is arranged on one side of the locking base, one end of the manual unlocking assembly is flexibly connected with the fuse unlocking assembly through a pulley, and the lower end of the continuous row locking piece is rotationally connected with the rack of a filter mechanism through a shaft. The application can lock multiple spectral ranges at the same time, has a simple and reliable structure, and is convenient to use. The manual unlocking assembly is arranged for debugging, and the device can be unlocked without damage during ground testing.

Description

Technical Field

[0001] This invention relates to the field of aviation and aerospace multispectral imaging technology, and in particular to a highly reliable continuous locking device for locking the filters of an array-type filter mechanism to resist vibration and impact of the transmission section. After entering orbit, the device is unlocked to release the locked state of the filters and realize the switching of spectral bands. Background Technology

[0002] A filter mechanism is a key component for achieving multispectral imaging in airborne and space remote sensing cameras. It filters light entering the optical path by switching filter elements, allowing light of specific spectral bands to pass through, ultimately achieving imaging across multiple spectral bands and acquiring the spectral information of the observed target. With the rapid development of airborne and spaceborne remote sensing, especially the technological breakthroughs in ultra-large aperture space remote sensors, the application scenarios of space remote sensors are becoming increasingly complex, requiring increasingly higher levels of subdivision of optical channels and optical spectral bands, resulting in a growing number and size of filters.

[0003] Using an array-type filter mechanism can meet the dual requirements of multiple spectral bands and large light-transmitting area. However, how to reliably lock the ultra-lightweight filter mechanism to resist the vibration and impact of the transmission section; automatically unlock it after entering orbit to achieve smooth switching of spectral bands; and manually unlock it during ground testing without damaging the locking mechanism to successfully complete the ground test has become an urgent problem to be solved. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide a highly reliable continuous locking device that uses a limited number of parts to achieve locking of multiple spectral bands, on-orbit unlocking, and manual unlocking during ground debugging.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention discloses a high-reliability continuous locking device, comprising:

[0007] Locking base;

[0008] A manual unlocking assembly, a pair of lever assemblies, and a fusible unlocking assembly capable of flexibly distributing force, all mounted on the locking base; and

[0009] Locking link and a row of locking components rotatably connected to the locking link;

[0010] The pull rod assembly is distributed on both sides of the locking base and arranged in an alternating manner. One end of the pull rod is flexibly connected to the fusible unlocking assembly via a pulley, and the other end is rotatably connected to the locking link. The middle part of the pull rod of the pull rod assembly is slidably connected to the locking base.

[0011] The manual unlocking component is installed on one side of the locking base, and one end of it is flexibly connected to the fusible unlocking component via the pulley.

[0012] The lower end of the continuous locking component is rotatably connected to the frame of the filter mechanism via a shaft.

[0013] Furthermore, the fuse unlocking assembly includes a rope assembly with both ends fixedly connected to the locking base, and a fuse fixedly connected to the side of the locking base. The heating part at the end of the fuse is sleeved on the rope of the rope assembly.

[0014] Furthermore, the manual unlocking component includes a hollow manual unlocking post with an internal thread at one end, a locking support post rotatably connected to the manual unlocking post, and a first locking lever that slides in the middle with the locking support post.

[0015] The pulley is installed at one end of the first locking rod, and the threaded section of the other end is screwed into the threaded section of the manual unlocking column. The right end face of the manual unlocking column abuts against the left end face of the locking support column.

[0016] The locking support column is fixedly connected to the locking base at the end away from the manually unlocking column.

[0017] Furthermore, the pull rod assembly includes a second locking rod that is slidably connected to the locking base in the middle, a return spring sleeved in the middle of the second locking rod, a connector sleeved to one end of the second locking rod, and a first small shaft installed in the connector;

[0018] The pulley is installed at one end of the second locking rod;

[0019] One end of the return spring abuts against the locking base, and the other end abuts against the second locking rod through the connector.

[0020] Furthermore, one end of the locking link is rotatably connected to the first small shaft, and the other end is rotatably connected to the row of locking members via the second small shaft.

[0021] Furthermore, the middle part of the row of locking members has a straight-line limiting support rod, the lower part of the row of locking members has a locking limiting arc, and the row of locking members has an array of locking grooves along its rotation axis at the position of the locking limiting arc.

[0022] Furthermore, when the row of locking components mechanically contacts the limiting seat of the base frame through the limiting support rod, the row of locking grooves of the row of locking components and the locking grooves on the filter assembly are in a critical contact state.

[0023] Furthermore, when the fuse is energized, it will burn through the rope of the rope assembly under the action of the heating part. Under the elastic force of the reset spring installed in the pull rod assembly, the continuous locking member is pushed to move, so that the continuous locking groove at the bottom of the continuous locking member is disengaged from the filter assembly, thereby unlocking.

[0024] Furthermore, the pulleys installed on the manual unlocking component and the pull rod component can both abut against the locking base.

[0025] Furthermore, when the first locking lever of the manual unlocking component is manually unlocked, the first locking lever moves horizontally to the right, and the pulleys of the two lever assemblies move away from each other until the side end face of the pulley contacts the side of the locking base, thus completing the manual unlocking.

[0026] In the above technical solution, the present invention provides a highly reliable continuous locking device with the following advantages:

[0027] This invention presents a highly reliable continuous locking device that can effectively lock multiple spectral bands simultaneously. It features a simple structure and high reliability. Because the locking process not only locks in the direction of motion but also restricts the longitudinal direction where stiffness is weaker, it significantly improves the first-order mode of the mechanism and enhances its resistance to impact vibrations in the launch section. A manual unlocking component is designed to unlock the mechanism without disrupting the locking configuration, meeting ground testing requirements and offering ease of use. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0029] Figure 1 This is a perspective view of the locking state of a high-reliability continuous locking device according to the present invention;

[0030] Figure 2 This is a front view of the locking state of a high-reliability continuous locking device according to the present invention;

[0031] Figure 3 This is a top view of the locking state of a high-reliability continuous locking device according to the present invention;

[0032] Figure 4 This is a schematic diagram showing the connection of the manual unlocking component, the pull rod component, and the fusible unlocking component of a high-reliability continuous locking device according to the present invention.

[0033] Figure 5This is a front view of the unlocked state of a high-reliability continuous locking device according to the present invention;

[0034] Figure 6 This is a perspective view of the unlocked state of a high-reliability chain locking device according to the present invention.

[0035] Figure 7 This is a perspective view of the row of locking components in a high-reliability row locking device of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] In the diagram: 1. Manual unlocking post; 2. First locking rod; 3. Bearing seat; 4. Locking support post; 5. First pulley; 6. Rope assembly; 7. Locking base; 8. Fuse; 9. Second pulley; 10. Second locking rod; 11. Return spring; 12. First split connector; 13. First small shaft; 14. Second split connector; 15. Locking linkage; 16. Connecting locking components; 17. Limit seat; 18. Frame; 19. Second small shaft; 20. Third small shaft; 21. Filter assembly;

[0038] 16-1, Limiting support rod; 16-2, Locking limiting arc; 16-3, Continuous row of locking grooves. Detailed Implementation

[0039] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] See Figure 1-7 As shown;

[0041] A highly reliable continuous locking device is invented to lock the filters of an array-type filter mechanism to resist vibration and impact of the emission section. After entering the track, it is unlocked to release the locked state of the filters and realize the switching of spectral bands.

[0042] See Figure 1 , 4 As shown, the high-reliability chain locking device includes: a locking base 7, a manual unlocking assembly, a pull rod assembly, a fusible unlocking assembly capable of flexibly distributing force, a locking link 15, and a chain locking component 16;

[0043] The manual unlocking component is installed on the lower left of the locking base 7, and one end of it is connected to the fusible unlocking component that can flexibly distribute force via a pulley.

[0044] A pair of pull rod assemblies are installed on the left and right sides of the locking base 7 and are arranged in an alternating manner. One end of the pull rod assembly is connected to the flexible force-disconnecting fusion unlocking assembly through a pulley, and the other end of the pull rod assembly is rotatably connected to the locking link 15. The middle part of the pull rod of the pull rod assembly is slidably connected to the locking base 7. The other end of the locking link 15 is rotatably connected to the upper shaft hole of the row of locking parts 16. The lower two shaft holes of the row of locking parts 16 are rotatably connected to the frame 18 of the filter mechanism through the third small shaft 20.

[0045] See Figure 4 As shown;

[0046] The fusible unlocking assembly includes a rope assembly 6 with both ends fixedly connected to the locking base 7, a fuse 8 fixedly connected to the front side of the locking base 7, and the heating part at the front end of the fuse 8 being sleeved on the rope of the rope assembly 6.

[0047] See Figure 4 As shown;

[0048] The manual unlocking assembly includes a hollow manual unlocking post 1 with an internal thread at one end, a bearing seat 3 that rotates with the manual unlocking post 1, a locking support post 4 that is fixedly connected to the bearing seat 3 at one end, and a first locking lever 2 that slides with the locking support post 4 in the middle.

[0049] The first locking rod 2 has a first pulley 5 installed at one end. The first pulley 5 is connected to the rope of the rope assembly 6. The locking support column 4 is fixed to the locking base 7 at the end away from the bearing seat 3. The threaded section of the other end of the first locking rod 2 is screwed into the threaded section of the manual unlocking column 1. The right end face of the manual unlocking column 1 abuts against the left end face of the locking support column 4. The bearing seat 3 is rotatably connected to the manual unlocking column 1 through a bearing.

[0050] See Figure 4 As shown;

[0051] The pull rod assembly includes a second locking rod 10 that is slidably connected to the locking base 7 in the middle, a return spring 11 sleeved in the middle of the second locking rod 10, a second pulley 9 installed at one end of the second locking rod 10, and a first split connector 12 and a second split connector 14 sleeved at the other end of the second locking rod 10.

[0052] The stepped hole of the second split connector 14 is fitted with the first small shaft 13, the second pulley 9 is fitted with the rope of the rope assembly 6, one end of the return spring 11 abuts against the locking base 7, and the other end abuts against the second locking rod 10 through the first split connector 12 and the second split connector 14.

[0053] See Figure 2 , 4 As shown;

[0054] One end of the locking link 15 is rotatably connected to the first small shaft 13, and the other end is rotatably connected to the row of locking parts 16 via the second small shaft 19.

[0055] See Figure 1 , 3 As shown in Figure 7;

[0056] The middle part of the row of locking members 16 has a straight-line limiting support rod 16-1, the lower part of the row of locking members 16 has a locking limiting arc 16-2, and the row of locking members 16 has an array of row of locking grooves 16-3 along its rotation axis at the position of the locking limiting arc 16-2.

[0057] For details, see Figure 7 As shown, the row of locking members 16 has a plate-like structure. The row of locking members 16 includes a first plate and a second plate fixed below the first plate. The first plate is perpendicular to the second body.

[0058] The top of the first plate is rotatably connected to the locking rod 15 via the second small shaft 19. The middle of the first plate has a straight-line limiting support rod 16-1. A limiting seat 17 is provided on the base frame 18. The limiting support rod 16-1 and the limiting seat 17 are in contact.

[0059] The second plate has a locking and limiting arc 16-2 at its end, and a third small shaft 20 is installed at both ends of the second plate. The third small shaft 20 is rotatably connected to the base frame 18, and the second plate is provided with an array of locking grooves 16-3 along its length.

[0060] Preferably, when the limiting support rod 16-1 and the limiting seat 17 are in mechanical contact, the connecting locking groove 16-3 at the lower part of the connecting locking member 16 is in critical contact with the locking groove on the filter assembly 21.

[0061] See Figure 1 , 5 As shown;

[0062] Preferably, manually rotating the manual unlocking pin 1 of the manual unlocking assembly can also achieve the locking and unlocking movement of the row of locking members 16. Specifically, when manually unlocking via the manual unlocking assembly, the manual unlocking pin 1 rotates to the maximum unlocking position, the first locking lever 2 moves to the extreme unlocking position, and the first pulley 5 of the lever assembly will mechanically contact the second pulley 9. At this time, the rope of the rope assembly 6 is still in a taut state, and the row of locking grooves at the lower part of the row of locking members disengages from the filter assembly, thus achieving manual unlocking.

[0063] See Figure 1 As shown;

[0064] Preferably, the pulleys of both the manual unlocking component and the lever component are able to abut against the locking base 7.

[0065] Specifically, the pulley includes a pulley body and a pulley seat rotatably connected to the pulley body. The pulley seat is fixedly connected to the end of the first locking rod 2 of the manual unlocking assembly and the second locking rod 10 of the rod assembly. The pulley installed by the rod assembly abuts against the locking base 7. After unlocking on the rail, all parts of the rod assembly are in a positional constraint state and will not move freely after melting, thus avoiding uncontrollable risks.

[0066] See Figure 5 , 6 As shown;

[0067] When unlocking in orbit, after the fuse 8 is energized, the rope will be burned by the heating part at the front end. Under the elastic force of the return spring 11, the pull rod assembly pushes the row of locking parts 16 to move, so that the lower row of locking grooves 16-3 disengages from the filter assembly 21, thereby unlocking.

[0068] In the above technical solution, the present invention provides a highly reliable continuous locking device:

[0069] Working principle:

[0070] As shown in 1 and 3, the manual unlocking component and the pull rod components arranged on both sides achieve uniform force transmission through the rope on the fused unlocking component, and the pulleys ensure that the tension of each component is equal.

[0071] In the locked state, the manual unlocking component is in the initial position, and the first locking lever 2 is in the left extreme position (that is, the left end of the first locking lever 2 is located at the left end of the inner cavity of the manual unlocking column 1). At this time, under the tension of the rope, the second pulley 9 of the pair of lever assemblies moves away from the side wall of the locking base 7. At this time, the second pulley 9 is in the locked position. The pair of lever assemblies pull the row of locking members 16 through the second locking rod 10 and the locking connecting rod 15, so that the limiting support rod 16-1 on the row of locking members 16 is in mechanical contact with the limiting seat 17. At this time, the row of locking grooves 16-3 at the lower part of the row of locking members 16 is in critical contact with the locking groove on the filter assembly 21. At the same time, the return spring 11 on the lever assembly is in a compressed state.

[0072] Referring to Figures 1, 5, and 6, when the filter mechanism needs to be manually unlocked, manually rotate the manual unlocking post 1 to move the first locking lever 2 horizontally to the right (that is, the left end of the first locking lever 2 moves toward the right end of the inner cavity of the manual unlocking post 1). The second pulleys 9 of the pair of lever assemblies move away from each other under the action of the return spring 11 until the side end face of the second pulley 9 of the lever assembly contacts the side of the locking base 7, thus completing the manual unlocking. The pair of lever assemblies drive the connecting locking parts 16 on both sides to open through the second locking rod 10 and the locking connecting rod 15, so that the lower connecting locking groove 16-3 disengages from the filter assembly, thus achieving unlocking.

[0073] Similarly, during on-rail unlocking, fuse 8 is energized, and the heating element at the front end of fuse 8 remains in contact with the rope of rope assembly 6. Under high temperature, the rope melts, and the locking tension of the rope on the manual unlocking assembly and the pair of lever assemblies disappears. The lever assemblies are unlocked under the action of return spring 11 and are mechanically limited by contacting the side wall of locking base 7 through the side face of the second pulley 9. Then, the pair of lever assemblies drive the row of locking parts 16 on both sides to open through the second locking rod 10 and locking connecting rod 15, thus achieving on-rail unlocking. Since the lever assembly is mechanically in contact with the locking base 7 through the pulley seat of the second pulley 9, it is designed to prevent detachment. After on-rail unlocking, the lever assembly and all parts connected to the connecting rod assembly are in a positional constraint state and will not move freely after the rope melts, thus avoiding uncontrollable risks.

[0074] Beneficial effects:

[0075] The high-reliability continuous locking device designed in this invention can effectively lock multiple spectral bands simultaneously. It features a simple structure and high reliability. Because the locking process not only locks in the direction of motion but also restricts the longitudinal direction where stiffness is weaker, it significantly improves the first-order mode of the mechanism and enhances its resistance to impact vibrations in the launch section. A manual unlocking component is designed to unlock the mechanism without disrupting the locking configuration, meeting ground testing requirements and offering ease of use.

[0076] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-reliability continuous locking device, characterized in that, include: Locking base (7); The manual unlocking assembly, a pair of lever assemblies, and a fusible unlocking assembly capable of flexibly distributing force, all mounted on the locking base (7); and Locking link (15) and a row of locking members (16) rotatably connected to the locking link (15). The pull rod assembly is distributed on both sides of the locking base (7) and arranged in an alternating manner. One end of the pull rod is flexibly connected to the fusible unlocking assembly through a pulley, and the other end is rotatably connected to the locking rod (15). The middle part of the pull rod of the pull rod assembly is slidably connected to the locking base (7). The manual unlocking component is installed on one side of the locking base (7), and one end of it is flexibly connected to the fusible unlocking component through the pulley; The lower end of the chain locking member (16) is rotatably connected to the frame (18) of the filter mechanism via a shaft; The fusible unlocking assembly includes a rope assembly (6) with both ends fixedly connected to the locking base (7) and a fuse (8) fixedly connected to the side of the locking base (7). The heating part at the end of the fuse (8) is sleeved on the rope of the rope assembly (6).

2. The high-reliability continuous locking device according to claim 1, characterized in that... ； The manual unlocking assembly includes a hollow manual unlocking post (1) with an internal thread at one end, a locking support post (4) rotatably connected to the manual unlocking post (1), and a first locking lever (2) that slides in the middle with the locking support post (4). The first locking lever (2) has the pulley installed at one end, and the threaded section at the other end is screwed into the threaded section of the manual unlocking column (1). The right end face of the manual unlocking column (1) abuts against the left end face of the locking support column (4). The locking support column (4) is fixedly connected to the locking base (7) at the end away from the manual unlocking column.

3. The high-reliability continuous locking device according to claim 1, characterized in that... ； The pull rod assembly includes a second locking rod (10) that is slidably connected to the locking base (7) in the middle, a return spring (11) sleeved in the middle of the second locking rod (10), a connector sleeved at one end of the second locking rod (10), and a first small shaft (13) installed in the connector. The pulley is installed at one end of the second locking rod (10); One end of the return spring (11) abuts against the locking base (7), and the other end abuts against the second locking rod (10) through the connector.

4. A high-reliability continuous locking device according to claim 3, Its characteristics are: One end of the locking link (15) is rotatably connected to the first small shaft (13), and the other end is rotatably connected to the row of locking members (16) through the second small shaft (19).

5. A high-reliability continuous locking device according to claim 1, characterized in that; The middle part of the row of locking members (16) has a straight-line limiting support rod (16-1), the lower part of the row of locking members (16) has a locking limiting arc (16-2), and the row of locking members (16) has an array of row of locking grooves (16-3) located at the position of the locking limiting arc (16-2) along its rotation axis.

6. A high-reliability continuous locking device according to claim 5, characterized in that; When the row of locking members (16) mechanically contacts the limiting seat (17) of the base frame (18) through the limiting support rod (16-1), the row of locking grooves (16-3) of the row of locking members (16) and the locking groove on the filter assembly (21) are in a critical contact state.

7. A high-reliability continuous locking device according to claim 1, Its characteristics are: When the fuse (8) is energized, it will burn the rope of the rope assembly (6) under the action of the heating part. Under the elastic force of the reset spring (11) installed in the pull rod assembly, the continuous locking member (16) is pushed to move, so that the continuous locking groove (16-3) at the lower part of the continuous locking member (16) is disengaged from the filter assembly (21), thereby unlocking.

8. A high-reliability continuous locking device according to claim 1, characterized in that... ； The pulleys installed on the manual unlocking component and the lever component can both come into contact with the locking base (7).

9. A high-reliability continuous locking device according to claim 1 or 8, characterized in that... ； When the first locking lever (2) of the manual unlocking assembly is manually unlocked, the first locking lever (2) moves horizontally to the right, and the pulleys of the two lever assemblies move away from each other until the side end face of the pulley contacts the side of the locking base (7), thus completing the manual unlocking.

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