A high-reliability turnplate type locking release device based on timing release

Abstract

The application provides a high-reliability flap type locking release device based on timing release, which comprises a locking seat, the top of the locking seat is provided with a flap, the flap comprises a horizontal plate, the top of the horizontal plate is provided with a stepped shaft, and the stepped shaft is provided with a screw hole. The device further comprises a vertical plate, the bottom of the vertical plate is connected with the top left side of the horizontal plate, and the left side wall top of the vertical plate is further connected with the right side wall of the fixed plate through a pin shaft. The device further comprises a vertically arranged locking screw, the locking screw can pass through the screw hole and can be locked by an unlocker, and the locking screw is further sequentially sleeved with an unlocking spring, an anti-dropping cap and a compression gasket from bottom to top. The pin shaft is further sleeved with a torsional spring, and a second torsional arm is pressed below the compression gasket. In the locking state, the torsional spring does not contact the flap and the second torsional arm limiting gasket. In the application, the sequence of the action of the torsional spring and the unlocking spring is designed, and the problem that the rotation and the release action interfere with each other and cause jamming caused by the simultaneous work of the torsional spring and the unlocking spring is solved.

Description

Technical Field

[0001] This invention belongs to the field of spaceborne movable mechanism technology, and relates to locking and releasing, specifically to a highly reliable flap-type locking and releasing device based on time-sequenced release. Background Technology

[0002] Due to the severe vibrations and impacts during satellite launch, the onboard movable mechanism is secured by a locking device during launch. Once the satellite reaches its designated orbit, the locking is released via an unlocking action, allowing it to perform its mission.

[0003] In existing technologies, spaceborne movable mechanisms employ one or more sets of pyrotechnic locking and releasing devices or electromagnetic brakes for locking and unlocking. Pyrotechnic locking and releasing devices offer high reliability, fast action speed, and are mature products. They use screws to press the locking and releasing interface to restrict the degree of freedom of movement of the spaceborne movable mechanism. Then, the internal propellant ignites and detonates to cut the pressing bolts, allowing the spaceborne movable mechanism to rotate and disengage from the locking interface, thus releasing it.

[0004] Using pyrotechnics for initiation results in an explosive impact overload of over 2000g at the locking point, posing a risk of performance failure or precision misalignment to precision loads. Pyrotechnic unlocking generates significant vibrations and contaminants, and its use can damage and contaminate electrical or optical components in high-precision rotating systems, affecting mission performance. Furthermore, pyrotechnic-based locking and releasing devices are single-shot and cannot be reused. Multiple locking and releasing operations on the ground require repeated pyrotechnic replacements, leading to high operating costs and repeated disruption of the locking interface's compressibility, reducing the consistency of the on-orbit locking and releasing state.

[0005] Using an electromagnetic brake requires electromagnetic attraction of the onboard movable mechanism during launch, followed by power-on unlocking after reaching the predetermined orbit. The locking force is not high, the reliability is low, and the presence of the electromagnetic locking position also limits the range of motion of the movable mechanism, making it difficult to meet the normal working requirements of the turntable itself.

[0006] In addition, the fixed locking and release device may cause interference at the fixed end within the rotation range, resulting in areas where the spaceborne movable mechanism cannot operate, which affects the achievement of mission objectives and the interface of the installation layout. Summary of the Invention

[0007] To address the shortcomings of existing technologies, one objective of this invention is to provide a highly reliable flap-type locking and releasing device based on time-sequenced release, thereby solving the technical problem in existing spaceborne movable mechanisms where it is difficult to simultaneously improve reliability and reduce impact during locking and releasing.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A highly reliable flip-plate locking and releasing device based on time-sequenced release includes a locking seat with a fixed base at the bottom. A flip plate is provided on the top of the locking seat. The flip plate includes a horizontal plate. A stepped shaft is integrally provided vertically at the top center of the horizontal plate. An axially penetrating screw hole is coaxially opened in the stepped shaft.

[0010] The flap also includes a vertical plate, the bottom of which is integrally connected to the top left side of the horizontal plate, and the top of the left side wall of the vertical plate is also connected to the right side wall of the vertically arranged fixed plate by a pin.

[0011] It also includes a vertically arranged locking screw. The lower axial end of the locking screw can pass through the screw hole and be locked by the unlocking device in the locking seat. The upper axial end of the locking screw is also fitted with an unlocking spring, an anti-disengagement cap and a pressure washer in sequence from bottom to top. The bottom of the anti-disengagement cap fits against the top of the stepped shaft, and the top of the pressure washer can be pressed by the pressure nut installed on the locking screw.

[0012] The pin is arranged longitudinally, and a torsion spring body is also fitted on the pin. The end of the first torsion arm of the torsion spring is clamped to the right side wall of the fixing plate.

[0013] The vertical plate is provided with a transverse through hole for a torsion arm near the top center. A second torsion arm limiting pad is installed in the torsion arm through hole near the upper edge. The lower edge of the second torsion arm limiting pad does not contact the lower edge of the torsion arm through hole. The gap between the lower edge of the second torsion arm limiting pad and the lower edge of the torsion arm through hole is the gap through which the second torsion arm passes.

[0014] The end of the second torsion arm of the torsion spring passes through the second torsion arm through gap and is pressed under the pressure washer.

[0015] In the locked state, the torsion spring does not contact the flap plate or the second torsion arm limiting washer.

[0016] The present invention also has the following technical features:

[0017] Specifically, the locking seat includes a cylindrical seat body, within which a double-layered stepped shaft-shaped unlocker mounting cavity is coaxially formed. The unlocker mounting cavity includes a lower unlocker mounting cavity near the bottom, which penetrates the bottom of the seat body; the unlocker mounting cavity also includes an upper unlocker mounting cavity near the top, which is positioned above the lower unlocker mounting cavity and penetrates the top of the seat body. The diameter of the upper unlocker mounting cavity is smaller than the diameter of the lower unlocker mounting cavity.

[0018] Specifically, the unlocker is coaxially mounted inside the mounting cavity, and the unlocker is a shape memory alloy unlocker; the shape memory alloy unlocker includes a lower unlocker section and an upper unlocker section along the axial direction from bottom to top, and the diameter of the upper unlocker section is smaller than the diameter of the lower unlocker section.

[0019] The upper section of the unlocker is provided with a locking cap. The locking cap can be disengaged from and locked from the upper section of the unlocker by switching the power on and off of the shape memory alloy wire. The locking cap is connected to the lower axial end of the locking screw.

[0020] The lower section of the unlocker also has multiple unlocker mounting seats uniformly arranged circumferentially along the top of the side wall, and each unlocker mounting seat has a vertically penetrating unlocker mounting hole.

[0021] The seat body also has multiple unlocker fixing screw holes vertically opened on the side wall of the upper section of the unlocker mounting cavity. The unlocker fixing screw holes correspond one-to-one with the unlocker mounting holes, and the unlocker can be fastened to the seat body through the unlocker mounting holes and the unlocker fixing screw holes.

[0022] Specifically, the unlocker also includes a locking release cap, which can be locked and released by the unlocker.

[0023] The locking release cap and the locking screw are connected axially at their lower ends.

[0024] Specifically, the side wall of the seat body is provided with multiple radially penetrating weight-reducing through holes, which are evenly distributed on the side wall of the seat body.

[0025] The bottom of the outer side wall of the seat is also integrally provided with multiple cabin mounting seats. The multiple cabin mounting seats are evenly arranged along the circumference, and each cabin mounting seat has a vertically penetrating cabin connection hole. The seat can be connected to the satellite cabin through the multiple cabin connection holes.

[0026] Specifically, the stepped shaft is a double-layered stepped shaft, which includes an integrally formed first shaft segment and a second shaft segment along the axial direction from bottom to top. The outer diameter of the second shaft segment is smaller than the outer diameter of the first shaft segment.

[0027] The screw has a through hole that axially penetrates the first shaft section and the second shaft section.

[0028] The anti-slip cap includes a cylindrical cap body, the internal cavity of which is a mounting cavity for the unlocking spring, and the bottom of the mounting cavity for the unlocking spring is open.

[0029] The cap can be fitted onto the second shaft segment.

[0030] The unlocking spring is coaxially mounted inside the mounting cavity, and the unlocking spring can pop up the anti-detachment cap when the unlocker is released.

[0031] The top of the cap body is also coaxially provided with a first through hole for a vertically penetrating locking screw, and the diameter of the first through hole for the locking screw is greater than or equal to the diameter of the locking screw.

[0032] Specifically, the top outer surface of the second shaft segment is a hemispherical concave surface with a central hole.

[0033] The inner diameter of the cap body is greater than or equal to the outer diameter of the second shaft segment.

[0034] The top inner surface of the cap body is a hemispherical convex surface with a central hole, and the hemispherical convex surface can fit into the hemispherical concave surface of the second shaft segment.

[0035] The inner diameter of the unlocking spring is larger than the outer diameter of the second shaft segment;

[0036] The outer diameter of the unlocking spring is smaller than the outer diameter of the first shaft segment.

[0037] Specifically, the clamping pad includes a cylindrical pad body, and a second through hole for a locking screw is coaxially formed on the pad body. The diameter of the second through hole for the locking screw is greater than or equal to the diameter of the locking screw.

[0038] The gasket body has a flat cut surface along the axial direction on the left side of the second through hole of the locking screw.

[0039] The gasket body also has a second torsion arm limiting plate integrally provided on the top of the gasket's flat cross-section.

[0040] In the locked state, the end of the second torsion arm can be pressed against the lower surface of the second torsion arm limiting plate.

[0041] In the locked state, the lower surface of the second torsion arm limiting plate is located vertically between the lower edge of the second torsion arm limiting pad and the lower edge of the torsion arm through hole.

[0042] Specifically, the top of the horizontal plate is provided with multiple fan-shaped grooves, which are evenly distributed around the outer ring of the stepped shaft.

[0043] The bottom of the horizontal plate is also provided with a long groove.

[0044] The top outer surface of the locking seat is also integrally provided with a long strip protrusion, which can fit into the interior of the long strip groove.

[0045] Specifically, the vertical plate is provided with multiple transversely penetrating gasket fastening screw holes, which are arranged on the front and rear sides of the torsion arm through hole.

[0046] The center of the second torsion arm limiting pad is fitted inside the torsion arm through hole, and the edge of the second torsion arm limiting pad can be fastened to the vertical plate through multiple pad fastening screw holes.

[0047] The vertical plate has a first pin mounting front seat and a first pin mounting rear seat integrated at the front and rear ends of the top left side wall.

[0048] The first pin mounting seat is also provided with a longitudinally penetrating first pin front through hole.

[0049] The first pin mounting seat also has a longitudinal through hole for the first pin.

[0050] Specifically, the maximum longitudinal width of the fixing plate is less than or equal to the longitudinal distance between the rear wall surface of the first pin mounting front seat and the front wall surface of the first pin mounting rear seat.

[0051] The right side wall of the fixed plate is also integrally provided with a second pin mounting front seat and a second pin mounting rear seat at the longitudinal front and rear ends.

[0052] The second pin mounting seat is also provided with a longitudinally penetrating second pin front through hole.

[0053] The second pin mounting seat is also provided with a longitudinally penetrating second pin rear through hole.

[0054] The diameter of one end of the pin is larger than the diameter of the shaft body.

[0055] The other end of the pin passes through the first pin rear through hole, the second pin rear through hole, the spring body, the second pin front through hole and the first pin front through hole in sequence from back to front.

[0056] The other end of the pin is also equipped with a pin nut, which allows the pin to be mounted on the fixed plate and the vertical plate.

[0057] The right side wall of the fixing plate is also provided with a first torsion arm end slot. The first torsion arm end slot is in the shape of a longitudinally penetrating groove. The first torsion arm end slot is located vertically above the through hole in front of the second pin. The end of the first torsion arm can be inserted into the interior of the first torsion arm end slot.

[0058] The fixing plate is also provided with multiple horizontally penetrating fixing plate mounting holes, which allow the fixing plate to be mounted onto the rotating mechanism.

[0059] Compared with the prior art, the present invention has the following technical effects:

[0060] (I) In this invention, the device directly contacts the second torsion arm of the torsion spring with the second torsion arm limiting plate, rather than directly connecting it to the flip plate. The design specifies the release sequence of the unlocking spring and the torsion spring: when the shape memory alloy unlocker is energized, the locking cap disengages, and the unlocking spring causes the locking screw and the anti-disengagement cap to spring up, thereby releasing the limitation on the second torsion arm of the torsion spring; the second torsion arm of the torsion spring continues to flip up and contacts the lower edge of the second torsion arm limiting pad, thereby causing the second torsion arm limiting pad and the flip plate to flip up and rotate. This greatly improves the reliability of unlocking and releasing, and solves the problem of interference between the rotation and release actions caused by the simultaneous operation of the torsion spring and the unlocking spring, resulting in jamming.

[0061] (II) The locking and releasing of the device in this invention utilizes the characteristics of a shape memory alloy unlocker. Due to the use of shape memory alloy wire for driving, the reliability of unlocking and releasing is further improved, and the problem of jamming is further avoided.

[0062] (III) The locking and releasing of the device in this invention utilizes the characteristics of shape memory alloy unlocker. Due to the use of shape memory alloy wire for driving, the release impact is 1 to 2 orders of magnitude lower than that of pyrotechnic devices. Compared with traditional pyrotechnic devices, the unlocking impact force is greatly reduced, which can protect devices such as optical precision loads.

[0063] (IV) In terms of locking alignment, the device of the present invention uses a hemispherical convex surface and a hemispherical concave surface for self-alignment, thereby ensuring that the locking interface and the locking screw are coaxial. Since there is no complex transmission mechanism, the present invention avoids the introduction of additional installation and adjustment stress, ensures the safety of locking and releasing, and reduces the difficulty of installation and adjustment.

[0064] (V) The device in this invention is easy to process and easy to assemble and adjust. It uses easily formable metal materials and can make full use of existing casting processes and machining processes such as turning, milling, planing and grinding to quickly process the device in this invention. Attached Figure Description

[0065] Figure 1 This is a schematic diagram of the overall structure of the device in this invention when it is locked.

[0066] Figure 2 This is a schematic diagram of the flap structure in this invention.

[0067] Figure 3 This is a schematic diagram of the bottom structure of the flap in this invention.

[0068] Figure 4 This is a cross-sectional view of the entire device in this invention when it is locked.

[0069] Figure 5 This is a schematic diagram of the locking seat in this invention.

[0070] Figure 6 This is a cross-sectional view of the locking seat in this invention.

[0071] Figure 7 This is a schematic diagram of the unlocker in this invention.

[0072] Figure 8 This is a schematic diagram of the anti-slip cap structure in this invention.

[0073] Figure 9 This is a schematic diagram of the compression pad in the present invention.

[0074] Figure 10 This is a schematic diagram of the cross-section of the gasket in the compression gasket of the present invention.

[0075] Figure 11 This is a schematic diagram of the structure of the fixing plate in this invention.

[0076] Figure 12 This is a schematic diagram of the pin structure in this invention.

[0077] Figure 13 This is a schematic diagram of the unlocking spring in this invention.

[0078] The meanings of the labels in the diagram are as follows: 1-locking seat, 2-flip plate, 3-fixed plate, 4-pin, 5-locking screw, 6-unlocker, 7-unlocking spring, 8-anti-disengagement cap, 9-pressure washer, 10-pressure nut, 11-torsion spring, 12-pin nut, 13-locking separation interface.

[0079] 101-Base body, 102-Unlocker mounting cavity, 103-Unlocker fixing screw hole, 104-Base body weight reduction through hole, 105-Carrier mounting seat, 106-Carrier connection hole, 107-Long strip boss.

[0080] 201-Horizontal plate, 202-Stepped shaft, 203-Vertical plate, 204-Second torsion arm limiting pad.

[0081] 301 - Second pin mounting front seat, 302 - Second pin mounting rear seat, 303 - Second pin front through hole, 304 - Second pin rear through hole, 305 - First torsion arm end bayonet, 306 - Fixing plate mounting hole.

[0082] 601 - Lower section of the unlocker, 602 - Upper section of the unlocker, 603 - Unlocker mounting base, 604 - Unlocker mounting hole.

[0083] 801-Cap body, 802-Unlocking spring mounting cavity, 803-First through hole of locking screw, 804-Hemispherical convex surface.

[0084] 901-Gasket body, 902-Second through hole of locking screw, 903-Flat surface of gasket, 904-Second torsion arm limiting plate.

[0085] 1101 - Spring body, 1102 - First torsion arm, 1103 - Second torsion arm.

[0086] 10201 - Lower section mounting cavity of the unlocker; 10202 - Upper section mounting cavity of the unlocker.

[0087] 20101 - Fan ring groove, 20102 - Long strip groove.

[0088] 20201 - First shaft segment, 20202 - Second shaft segment, 20203 - Hemispherical concave surface, 20204 - Screw perforation.

[0089] 20301 - Torsion arm through hole, 20302 - Washer fastening screw hole, 20303 - First pin mounting front seat, 20304 - First pin mounting rear seat, 20305 - First pin front through hole, 20306 - First pin rear through hole.

[0090] The specific content of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0091] It should be noted that, unless otherwise specified, all devices, components, and materials in this invention utilize those known in the prior art. For example, the shape memory alloy unlocker uses a shape memory alloy unlocker commonly known in the art, and the multimeter uses a multimeter commonly known in the art. The shape memory alloy wire uses a shape memory alloy wire commonly known in the art. The spaceborne movable mechanism uses a spaceborne movable mechanism commonly known in the art.

[0092] In this invention, the OXYZ coordinate system is a three-dimensional rectangular coordinate system, with the X-axis pointing horizontally to the right; the Y-axis pointing vertically to the rear; and the Z-axis pointing vertically upwards.

[0093] Following the above technical solutions, specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0094] Example:

[0095] This embodiment provides a highly reliable flap-type locking and releasing device based on time-sequenced release, such as... Figure 1As shown, it includes a locking seat 1 with a fixed base at the bottom, and a flip plate 2 is provided on the top of the locking seat 1. The flip plate 2 includes a horizontal plate 201. A stepped shaft 202 is integrally provided vertically at the top center of the horizontal plate 201. An axially penetrating screw hole 20204 is coaxially opened in the stepped shaft 202.

[0096] The flip plate 2 also includes a vertical plate 203. The bottom of the vertical plate 203 is integrally connected to the top left side of the horizontal plate 201. The top of the left side wall of the vertical plate 203 is also connected to the right side wall of the vertically arranged fixed plate 3 by a pin 4.

[0097] It also includes a vertically arranged locking screw 5. The lower axial end of the locking screw 5 can pass through the screw through hole 20204 and can be locked by the unlocking device 6 in the locking seat 1. The upper axial end of the locking screw 5 is also fitted with an unlocking spring 7, an anti-disengagement cap 8 and a pressure washer 9 in sequence from bottom to top along the axial direction. The bottom of the anti-disengagement cap 8 is in contact with the top of the stepped shaft 202, and the top of the pressure washer 9 can also be pressed by the pressure nut 10 installed on the locking screw 5.

[0098] The pin 4 is arranged longitudinally, and the spring body 1101 of the torsion spring 11 is also fitted on the pin 4. The end of the first torsion arm 1102 of the torsion spring 11 is clamped on the right side wall of the fixing plate 3.

[0099] like Figure 2 and Figure 3 As shown, a horizontally penetrating torsion arm through hole 20301 is also provided on the vertical plate 203 near the top center. A second torsion arm limiting pad 204 is installed in the torsion arm through hole 20301 near the upper edge. The lower edge of the second torsion arm limiting pad 204 does not contact the lower edge of the torsion arm through hole 20301. The gap between the lower edge of the second torsion arm limiting pad 204 and the lower edge of the torsion arm through hole 20301 is the second torsion arm through gap.

[0100] The end of the second torsion arm 1103 of the torsion spring 11 passes through the second torsion arm through gap and is pressed under the pressure pad 9.

[0101] In the locked state, the torsion spring 11 does not contact the flap 2 or the second torsion arm limiting washer 204.

[0102] In this embodiment, the locking separation interface 13 refers to the interface between the top outer surface of the locking seat 1 and the bottom outer surface of the flip plate 2 when they are in the locking state.

[0103] In this embodiment, the locking seat 1 is integrally formed from stainless steel. The top outer surface of the seat body 101 of the locking seat 1 is the pressing surface, and the bottom outer surface of the seat body 101 of the locking seat 1 is the mounting surface. The stainless steel material used is a commonly known stainless steel material in the art.

[0104] In this embodiment, the material of the flap 2 is titanium alloy, and the titanium alloy material used is a commonly known titanium alloy material in the art.

[0105] In this embodiment, the structural schematic diagram of the unlocking spring 7 is as follows: Figure 13 As shown, the unlocking spring 7 is a straight helical compression spring, which is a commonly used straight helical compression spring known in the art.

[0106] In this embodiment, the anti-slip cap 8 is made of stainless steel, and the stainless steel material used is a commonly known stainless steel material in the art.

[0107] In this embodiment, the torsion spring 11 is a NIV-type parallel double torsion spring, which is a commonly used NIV-type parallel double torsion spring known in the art.

[0108] As a preferred embodiment of this invention, such as Figures 4 to 6 As shown, the locking seat 1 includes a cylindrical seat body 101. A double-layered stepped shaft-shaped unlocker mounting cavity 102 is coaxially formed inside the seat body 101. The unlocker mounting cavity 102 includes a lower unlocker mounting cavity 10201 near the bottom, which penetrates the bottom of the seat body 101. The unlocker mounting cavity 102 also includes an upper unlocker mounting cavity 10202 near the top, which is located at the top of the lower unlocker mounting cavity 10201 and penetrates the top of the seat body 101. The diameter of the upper unlocker mounting cavity 10202 is smaller than the diameter of the lower unlocker mounting cavity 10201.

[0109] As a preferred embodiment of this invention, such as Figure 7 As shown, an unlocker 6 is coaxially mounted inside the unlocker mounting cavity 102. The unlocker 6 is a shape memory alloy unlocker. The shape memory alloy unlocker includes a lower unlocker section 601 and an upper unlocker section 602 along the axial direction from bottom to top. The diameter of the upper unlocker section 602 is smaller than the diameter of the lower unlocker section 601.

[0110] A locking cap is provided on the upper section 602 of the unlocker. The locking cap can be disengaged from and locked on the upper section 602 of the unlocker by switching the power on and off of the shape memory alloy wire. The locking cap is connected to the lower axial end of the locking screw 5.

[0111] Multiple unlocker mounting seats 603 are integrally and evenly arranged along the circumferential direction on the top side wall of the lower section 601 of the unlocker, and each unlocker mounting seat 603 has a vertically penetrating unlocker mounting hole 604.

[0112] The seat 101 also has a plurality of unlocker fixing screw holes 103 vertically opened on the side wall of the upper section of the unlocker mounting cavity 10202. The unlocker fixing screw holes 103 and the unlocker mounting holes 604 correspond one to one. The unlocker 6 can be fastened to the seat 101 through the unlocker mounting holes 604 and the unlocker fixing screw holes 103.

[0113] As a preferred embodiment, the unlocker 6 further includes a locking release cap, which can be locked and released by the unlocker 6.

[0114] The locking release cap and the lower axial end of the locking screw 5 are connected.

[0115] In this embodiment, the lower axial end of the locking screw 5 and the locking release cap are connected by threads.

[0116] As a preferred embodiment, the side wall of the seat 101 is provided with a plurality of radially penetrating seat weight reduction through holes 104, which are evenly distributed on the side wall of the seat 101.

[0117] The bottom of the outer side wall of the seat 101 is also integrally provided with multiple cabin mounting seats 105. The multiple cabin mounting seats 105 are evenly arranged in the circumferential direction. Each cabin mounting seat 105 has a vertically penetrating cabin connection hole 106. The seat 101 can be connected to the satellite cabin through the multiple cabin connection holes 106.

[0118] In this embodiment, the satellite cabin adopts a commonly used satellite cabin known in the art.

[0119] As a preferred embodiment, the stepped shaft 202 is a double-layered stepped shaft. The stepped shaft 202 includes an integrally formed first shaft segment 20201 and a second shaft segment 20202 along the axial direction from bottom to top. The outer diameter of the second shaft segment 20202 is smaller than the outer diameter of the first shaft segment 20201.

[0120] The screw pierces through hole 20204 and axially penetrates the first shaft section 20201 and the second shaft section 20202.

[0121] like Figure 8 As shown, the anti-slip cap 8 includes a cylindrical cap body 801, the internal cavity of the cap body 801 is an unlocking spring mounting cavity 802, and the bottom of the unlocking spring mounting cavity 802 is open.

[0122] The cap body 801 can be fitted onto the second shaft segment 20202.

[0123] The unlocking spring 7 is coaxially mounted inside the unlocking spring mounting cavity 802. The unlocking spring 7 can pop up the anti-detachment cap 8 when the unlocker 6 is unlocked and released.

[0124] The top of the cap body 801 is also coaxially provided with a vertical through hole 803 for the locking screw, and the diameter of the first through hole 803 for the locking screw is greater than or equal to the diameter of the locking screw 5.

[0125] In this embodiment, the unlocking spring 7 is in a compressed state when locked and in a spring-loaded state when unlocked.

[0126] As a preferred embodiment, the top outer surface of the second shaft segment 20202 is a hemispherical concave surface 20203 with a central hole.

[0127] The inner diameter of the cap body 801 is greater than or equal to the outer diameter of the second shaft segment 20202.

[0128] The top inner surface of the cap body 801 is a hemispherical convex surface 804 with a central hole, and the hemispherical convex surface 804 can fit together with the hemispherical concave surface 20203 of the second shaft segment 20202.

[0129] The inner diameter of the unlocking spring 7 is larger than the outer diameter of the second shaft segment 20202;

[0130] The outer diameter of the unlocking spring 7 is smaller than the outer diameter of the first shaft segment 20201.

[0131] As a preferred embodiment of this invention, such as Figure 9 and Figure 10 As shown, the clamping pad 9 includes a cylindrical pad body 901, and a second through hole 902 for a locking screw is coaxially opened on the pad body 901. The diameter of the second through hole 902 for the locking screw is greater than or equal to the diameter of the locking screw 5.

[0132] On the gasket body 901, a gasket flat surface 903 is also provided axially on the left side of the second through hole 902 of the locking screw.

[0133] The gasket body 901 also has a second torsion arm limiting plate 904 integrally provided on the top of the gasket flat section 903.

[0134] In the locked state, the end of the second torsion arm 1103 can be pressed against the lower surface of the second torsion arm limiting plate 904.

[0135] In the locked state, the lower surface of the second torsion arm limiting plate 904 is located vertically between the lower edge of the second torsion arm limiting pad 204 and the lower edge of the torsion arm through hole 20301.

[0136] In this embodiment, the flat cut surface 903 of the gasket can prevent the second torsion arm 1103 from sliding, so that the end of the second torsion arm 1103 can fully contact the gasket body 901 and press under the second torsion arm limiting gasket 204.

[0137] As a preferred embodiment, the top of the horizontal plate 201 is provided with a plurality of fan-shaped fan-ring grooves 20101, which are evenly distributed around the outer ring of the stepped shaft 202.

[0138] The bottom of the horizontal plate 201 is also provided with a long groove 20102.

[0139] The top outer surface of the locking seat 1 is also integrally provided with a long strip protrusion 107, which can fit into the interior of the long strip groove 20102.

[0140] In this embodiment, when locked, the elongated protrusion 107 can fit into the interior of the elongated groove 20102, facilitating the pressing and installation between the horizontal plate 201 of the flip plate 2 and the base 101.

[0141] As a preferred embodiment, the vertical plate 203 is also provided with a plurality of transversely penetrating gasket fastening screw holes 20302, which are arranged on the front and rear sides of the torsion arm through hole 20301.

[0142] The center of the second torsion arm limiting shim 204 is fitted inside the torsion arm through hole 20301, and the edge of the second torsion arm limiting shim 204 can be fastened to the vertical plate 203 through multiple shim fastening screw holes 20302.

[0143] The vertical plate 203 has a first pin mounting front seat 20303 and a first pin mounting rear seat 20304 integrated at the front and rear ends of the top left side wall of the vertical plate 203.

[0144] The first pin mounting front seat 20303 also has a longitudinal through hole 20305 for the first pin.

[0145] The first pin mounting seat 20304 also has a longitudinal through hole 20306 for the first pin.

[0146] As a preferred embodiment of this invention, such as Figure 11 As shown, the maximum longitudinal width of the fixing plate 3 is less than or equal to the longitudinal distance between the rear wall surface of the first pin mounting front seat 20303 and the front wall surface of the first pin mounting rear seat 20304.

[0147] The front and rear ends of the right side wall of the fixing plate 3 are also integrally provided with a second pin mounting front seat 301 and a second pin mounting rear seat 302.

[0148] The second pin mounting seat 301 also has a longitudinally through second pin front through hole 303.

[0149] The second pin mounting seat 302 also has a longitudinally penetrating second pin rear through hole 304.

[0150] like Figure 12 As shown, the diameter of one end of the pin 4 is larger than the diameter of the shaft body of the pin 4.

[0151] The other end of the pin 4 passes through the first pin rear through hole 20306, the second pin rear through hole 304, the spring body 1101, the second pin front through hole 303 and the first pin front through hole 20305 in sequence from back to front.

[0152] A pin nut 12 is also installed on the other end of the pin 4, which can mount the pin 4 on the fixed plate 3 and the vertical plate 203.

[0153] The right side wall of the fixing plate 3 is also provided with a first torsion arm end slot 305. The first torsion arm end slot 305 is in the shape of a longitudinal through groove. The first torsion arm end slot 305 is located vertically above the second pin front through hole 303. The end of the first torsion arm 1102 can be inserted into the interior of the first torsion arm end slot 305.

[0154] The fixing plate 3 is also provided with multiple horizontally penetrating fixing plate mounting holes 306, and the fixing plate 3 can be installed onto the rotating mechanism through the multiple fixing plate mounting holes 306.

[0155] In this embodiment, the rotating mechanism is a commonly used rotating mechanism known in the art.

[0156] The device in this embodiment is used to connect the rotating mechanism and the satellite cabin, and to perform locking and releasing functions. The basic assembly sequence is as follows: first, determine the position of the fixing plate 3; then, determine the installation position of the locking seat 1 according to the range of motion of the flap 2 during unlocking and release; then, determine the position of the torsion spring 11 and the second torsion arm limiting washer 204; finally, use the clamping nut 10 to clamp the clamping washer 9, the anti-detachment cap 8, the unlocking spring 7, the horizontal plate 201, the unlocker 6 and the locking seat 1, and at the same time, install the clamping nut 10 onto the locking screw 5.

[0157] The device in this embodiment specifically includes the following steps when in use:

[0158] In this embodiment, the device operates during locking and resetting:

[0159] First, the fixed plate 3 is installed on the rotating mechanism. The flip plate 2 and the fixed plate 3 are connected by a pin 4. The locking seat 1 is installed on the satellite body. The unlocker 6 is installed on the locking seat 1 and the unlocker 6 is in the initial state.

[0160] Second, install the locking screw 5 and the clamping nut 10, and the unlocking device 6 applies a locking force to press the clamping pad 9, thereby applying pressure to the unlocking spring 7.

[0161] Third, the end of the first torsion arm 1102 of the torsion spring 11 is engaged with the first torsion arm end slot 305 on the fixing plate 3. After the second torsion arm 1103 overcomes the torsion force and passes through the torsion arm through hole 20301, it is pressed against the lower surface of the second torsion arm limiting plate 904 of the clamping pad 9 by the locking screw 5.

[0162] Fourth, adjust the top outer surface of the locking seat 1 and the bottom outer surface of the flip plate 2 to ensure there is no gap.

[0163] Fifth, after the device in this embodiment is installed, ensure that when the unlocker 6 is locked, the unlocking spring 7 is not interfered with and can bounce normally.

[0164] Sixth, after installing the device in this embodiment, ensure that the flap 2 and the locking seat 1 are in surface contact.

[0165] In this embodiment, the device performs the unlocking and releasing operation as follows:

[0166] Before unlocking, first use a multimeter to test and record the resistance value of unlocker 6. Then connect unlocker 6 to the unlocking power supply and apply current to achieve unlocking.

[0167] At this time, the unlocker 6 releases the locking cap, that is, the unlocker 6 releases the locking screw 5, causing the locking screw 5 to spring up under the action of the unlocking spring 7; at the same time, the springing up of the unlocking spring 7 will sequentially drive the anti-disengagement cap 8 and the pressure pad 9 to spring up. After the pressure pad 9 springs up, the second torsion arm limit plate 904 can release the pressure on the second torsion arm 1103.

[0168] Furthermore, the second torsion arm 1103 of the torsion spring 11 contacts the lower edge of the second torsion arm limiting washer 204, thereby causing the second torsion arm limiting washer 204 and the flip plate 2 to flip up until the flip plate 2 touches the fixed plate 3, completing the final unlocking operation. At this time, the bottom outer surface of the horizontal plate 201 separates from the top outer surface of the locking seat 1, that is, the horizontal plate 201 and the locking seat 1 separate from the locking separation interface 13. After unlocking, the resistance value of the unlocking device 6 is tested again and recorded for comparison.

Claims

1. A highly reliable flap-type locking and releasing device based on time-sequenced release, characterized in that, The locking seat (1) includes a locking base with a fixed seat at the bottom. The top of the locking seat (1) is provided with a flap (2). The flap (2) includes a horizontal plate (201). A stepped shaft (202) is integrally provided vertically at the top center of the horizontal plate (201). An axially penetrating screw hole (20204) is coaxially opened in the stepped shaft (202). The flap (2) also includes a vertical plate (203), the bottom of which is integrally connected to the top left side of the horizontal plate (201), and the top of the left side wall of the vertical plate (203) is connected to the right side wall of the vertically arranged fixed plate (3) by a pin (4). It also includes a vertically arranged locking screw (5), the lower axial end of the locking screw (5) can pass through the screw through hole (20204) and can be locked by the unlocker (6) in the locking seat (1), the upper axial end of the locking screw (5) is also fitted with an unlocking spring (7), an anti-disengagement cap (8) and a pressure washer (9) in sequence from bottom to top along the axial direction, the bottom of the anti-disengagement cap (8) is in contact with the top of the stepped shaft (202), and the top of the pressure washer (9) can also be pressed by the pressure nut (10) installed on the locking screw (5); The pin (4) is arranged longitudinally, and the spring body (1101) of the torsion spring (11) is also fitted on the pin (4). The end of the first torsion arm (1102) of the torsion spring (11) is clamped on the right side wall of the fixing plate (3). The vertical plate (203) is provided with a transverse through-hole (20301) near the top center. A second torsion arm limiting pad (204) is installed in the torsion arm through-hole (20301) near the upper edge. The lower edge of the second torsion arm limiting pad (204) does not contact the lower edge of the torsion arm through-hole (20301). The gap between the lower edge of the second torsion arm limiting pad (204) and the lower edge of the torsion arm through-hole (20301) is the second torsion arm through-hole. The end of the second torsion arm (1103) of the torsion spring (11) passes through the second torsion arm through gap and is pressed under the pressure pad (9); In the locked state, the torsion spring (11) does not contact the flap (2) or the second torsion arm limiting washer (204).

2. The highly reliable flap-type locking and releasing device based on time-sequenced release as described in claim 1, characterized in that, The locking seat (1) includes a cylindrical seat body (101), and a double-layered stepped shaft-shaped unlocker mounting cavity (102) is coaxially opened inside the seat body (101). The unlocker mounting cavity (102) includes a lower unlocker mounting cavity (10201) near the bottom, which penetrates the bottom of the seat body (101). The unlocker mounting cavity (102) also includes an upper unlocker mounting cavity (10202) near the top, which is located at the top of the lower unlocker mounting cavity (10201) and penetrates the top of the seat body (101). The diameter of the upper unlocker mounting cavity (10202) is smaller than the diameter of the lower unlocker mounting cavity (10201).

3. The highly reliable flap-type locking and releasing device based on time-sequenced release as described in claim 2, characterized in that, The unlocker (6) is coaxially mounted in the unlocker mounting cavity (102). The unlocker (6) is a memory alloy unlocker. The memory alloy unlocker includes a lower unlocker section (601) and an upper unlocker section (602) along the axial direction from bottom to top. The diameter of the upper unlocker section (602) is smaller than the diameter of the lower unlocker section (601). The upper section (602) of the unlocker is provided with a locking cap. The locking cap can be disengaged from and locked from the upper section (602) of the unlocker by switching the power on and off of the shape memory alloy wire. The locking cap is connected to the lower axial end of the locking screw (5). The lower section (601) of the unlocker is also uniformly provided with multiple unlocker mounting seats (603) along the circumferential direction on the top side wall. Each unlocker mounting seat (603) is provided with a vertically penetrating unlocker mounting hole (604). The seat (101) is provided with a plurality of unlocker fixing screw holes (103) vertically on the side wall of the upper section of the unlocker mounting cavity (10202). The unlocker fixing screw holes (103) and the unlocker mounting holes (604) correspond one-to-one. The unlocker (6) can be fastened to the seat (101) through the unlocker mounting holes (604) and the unlocker fixing screw holes (103).

4. The highly reliable flap-type locking and releasing device based on time-sequenced release as described in claim 2, characterized in that, The side wall of the seat (101) is also provided with a plurality of radially penetrating seat weight reduction through holes (104), and the plurality of seat weight reduction through holes (104) are evenly distributed on the side wall of the seat (101). The bottom of the outer side wall of the seat (101) is also integrally provided with multiple cabin mounting seats (105). The multiple cabin mounting seats (105) are evenly arranged in the circumferential direction. Each cabin mounting seat (105) has a vertically penetrating cabin connection hole (106). The seat (101) can be connected to the satellite cabin through the multiple cabin connection holes (106).

5. The highly reliable flap-type locking and releasing device based on time-sequenced release as described in claim 1, characterized in that, The stepped shaft (202) is a double-layered stepped shaft. The stepped shaft (202) includes an integrally formed first shaft segment (20201) and second shaft segment (20202) from bottom to top along the axial direction. The outer diameter of the second shaft segment (20202) is smaller than the outer diameter of the first shaft segment (20201). The screw through hole (20204) axially penetrates the first shaft section (20201) and the second shaft section (20202); The anti-slip cap (8) includes a cylindrical cap body (801), the internal cavity of the cap body (801) is an unlocking spring mounting cavity (802), and the bottom of the unlocking spring mounting cavity (802) is open; The cap body (801) can be fitted onto the second shaft segment (20202); The unlocking spring (7) is coaxially fitted inside the unlocking spring mounting cavity (802). The unlocking spring (7) can pop up the anti-detachment cap (8) when the unlocker (6) is unlocked and released. The top of the cap body (801) is also coaxially provided with a first through hole (803) for a vertically penetrating locking screw, the diameter of which is greater than or equal to the diameter of the locking screw (5).

6. The highly reliable flap-type locking and releasing device based on time-sequenced release as described in claim 5, characterized in that, The top outer surface of the second shaft segment (20202) is a hemispherical concave surface (20203) with a central hole; The inner diameter of the cap body (801) is greater than or equal to the outer diameter of the second shaft segment (20202); The top inner surface of the cap body (801) is a hemispherical convex surface (804) with a central hole, and the hemispherical convex surface (804) can fit into the hemispherical concave surface (20203) of the second shaft segment (20202). The inner diameter of the unlocking spring (7) is larger than the outer diameter of the second shaft segment (20202). The outer diameter of the unlocking spring (7) is smaller than the outer diameter of the first shaft segment (20201).

7. The highly reliable flap-type locking and releasing device based on time-sequenced release as described in claim 6, characterized in that, The clamping pad (9) includes a cylindrical pad body (901), and a second through hole (902) for a locking screw is coaxially opened on the pad body (901). The diameter of the second through hole (902) for the locking screw is greater than or equal to the diameter of the locking screw (5). The gasket body (901) is provided with a gasket flat surface (903) on the left side of the second through hole (902) of the locking screw along the axial direction; The gasket body (901) also has a second torsion arm limiting plate (904) integrally provided on the top of the gasket flat section (903); In the locked state, the end of the second torsion arm (1103) can be pressed against the lower surface of the second torsion arm limiting plate (904). In the locked state, the lower surface of the second torsion arm limiting plate (904) is located vertically between the lower edge of the second torsion arm limiting pad (204) and the lower edge of the torsion arm through hole (20301).

8. The highly reliable flap-type locking and releasing device based on time-sequenced release as described in claim 1, characterized in that, The top of the horizontal plate (201) is also provided with a plurality of fan-shaped fan-ring grooves (20101), and the plurality of fan-ring grooves (20101) are evenly distributed in the circumferential direction on the outer ring of the stepped shaft (202). The bottom of the horizontal plate (201) is also provided with a long groove (20102); The top outer surface of the locking seat (1) is also integrally provided with a long strip boss (107), which can fit into the interior of the long strip groove (20102).

9. The highly reliable flap-type locking and releasing device based on time-sequenced release as described in claim 1, characterized in that, The vertical plate (203) is also provided with a number of transversely penetrating gasket fastening screw holes (20302), which are arranged on the front and rear sides of the torsion arm through hole (20301). The center of the second torsion arm limiting pad (204) is fitted inside the torsion arm through hole (20301), and the edge of the second torsion arm limiting pad (204) can be fastened to the vertical plate (203) through multiple pad fastening screw holes (20302); The vertical plate (203) has a first pin mounting front seat (20303) and a first pin mounting rear seat (20304) integrally provided at the longitudinal front and rear ends of the top left side wall of the vertical plate (203) from front to back; The first pin mounting front seat (20303) is also provided with a longitudinal through hole (20305) for the first pin. The first pin mounting seat (20304) is also provided with a longitudinal through hole (20306) for the first pin.

10. The highly reliable flap-type locking and releasing device based on time-sequenced release as described in claim 9, characterized in that, The maximum longitudinal width of the fixing plate (3) is less than or equal to the longitudinal distance between the rear wall of the first pin mounting front seat (20303) and the front wall of the first pin mounting rear seat (20304); The right side wall of the fixing plate (3) is also integrally provided with a second pin mounting front seat (301) and a second pin mounting rear seat (302) at the longitudinal front and rear ends respectively. The second pin mounting front seat (301) is also provided with a longitudinally penetrating second pin front through hole (303); The second pin mounting seat (302) is also provided with a longitudinally through second pin rear through hole (304); The diameter of one end of the pin (4) is larger than the diameter of the shaft body of the pin (4); The other end of the pin (4) passes through the first pin rear through hole (20306), the second pin rear through hole (304), the spring body (1101), the second pin front through hole (303) and the first pin front through hole (20305) in sequence from back to front along the longitudinal direction; A pin nut (12) is also installed on the other end of the pin (4), which can mount the pin (4) on the fixed plate (3) and the vertical plate (203); The right side wall of the fixing plate (3) is also provided with a first torsion arm end slot (305). The first torsion arm end slot (305) is in the shape of a longitudinally penetrating groove. The first torsion arm end slot (305) is located vertically above the second pin front through hole (303). The end of the first torsion arm (1102) can be inserted into the interior of the first torsion arm end slot (305). The fixing plate (3) is also provided with a plurality of horizontally through fixing plate mounting holes (306), and the fixing plate (3) can be installed on the rotating mechanism through the plurality of fixing plate mounting holes (306).

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