A locking and releasing device capable of storing space and a working method thereof

Abstract

The present invention relates to the field of locking and releasing technology, and in particular to a locking and releasing device that can be stored in a storage space and a working method thereof. Through the coordinated work of the rotating retraction mechanism and the storage mechanism, the locking and releasing can be completed by rotating the rotating rod and loosening the second screw, and the operation is simple; the second screw is clamped and stored in the storage box through the horizontally arranged locking assembly, which has less impact when released than the commonly used pyrotechnic locking and releasing device; the lower plane of the second screw nut is clamped by the upper plane of the locking assembly, and the axial force is not applied during storage, the radial force is small, and the stability is strong. It can complete on-ground locking, on-orbit release and recycling, and after release, it can achieve a certain displacement gap between the upper platform and the threaded hole mounting seat to meet the needs of special loads. It can achieve repeated locking when the space payload re-enters, meeting the use requirements under different conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of locking and releasing technology, and in particular to a retractable locking and releasing device for a space environment and a working method thereof. Background Art

[0002] Currently, most space motion mechanisms are equipped with a locking and releasing mechanism. This locks the mechanism on the ground and during launch, limiting its displacement and providing safety protection. Once the mechanism is in orbit, it is released reliably, allowing the space payload to enter normal operation.

[0003] Lock releases are categorized as either pyrotechnic or non-pyrotechnic. The most common type is the pyrotechnic, which uses the expansion of explosive gases to break the connecting components and release the device. However, pyrotechnic releases generate contaminants during the release process, making them unsuitable for repeated testing and use. Furthermore, the significant impact of the explosion can affect the proper operation of precision loads and even cause damage. Summary of the Invention

[0004] The technical problems to be solved by the present invention are:

[0005] Certain space payloads in space station experimental cabinets must be locked for support and protection before entering orbit and released for normal operation afterward, with required clearances. Conventional screw tightening is difficult to perform within the space station, and unlocked screws are difficult to store. Pyrotechnic locking and release mechanisms also create significant impact, polluting the station environment and endangering the health of astronauts.

[0006] To this end, the present invention aims to provide a retractable space locking and releasing device and its working method. The operator rotates the second screw through the first operating hole to achieve locking and releasing, and the released second screw is stored in the storage box. When locking, the rotary retraction mechanism provides support and protection for the upper platform; when releasing, a movement gap is formed between the upper platform and the threaded hole mounting seat. During the locking and releasing process, there is no pollution to the space station environment, and the locking can also be achieved again when the payload re-enters and returns to Earth. It has the advantages of simple operation, low unlocking impact force, and the screws and gaskets can be stored after unlocking.

[0007] A technical solution provided by the present invention is:

[0008] A locking and releasing device for a retractable space, comprising: a threaded hole mounting seat and a receiving mechanism; the threaded hole mounting seat is arranged below an upper platform, and the receiving mechanism is installed above the upper platform;

[0009] The storage mechanism includes a storage box, a second screw and a clamping assembly; a first operating hole is provided on the top surface of the storage box, and the bottom surface is arranged coplanar with the upper platform; the second screw passes through the first through hole provided on the upper platform in the vertical direction and is detachably connected to the threaded hole mounting seat below; the clamping assembly passes through the storage box cavity wall and is arranged on both sides of the storage box to clamp the second screw; the second screw is rotated through the first operating hole to achieve locking and release, and the released second screw is stored in the storage box.

[0010] Preferably, the locking and releasing device also includes a rotating retraction mechanism arranged under the upper platform, and a second operating hole is provided on the upper platform. The rotating retraction mechanism includes a gasket and a rotating retraction assembly, and a second through hole is provided at one end of the gasket, and an inner groove is provided at the other end; when locked, the second through hole, the first through hole and the threaded hole of the threaded hole mounting seat are coaxially arranged in sequence, and the inner groove and the second operating hole are concentrically arranged, and the rotating retraction mechanism provides support and protection for the upper platform; the rotating retraction assembly is movably connected to the gasket to realize vertical displacement adjustment; when released, a motion gap is formed between the upper platform and the threaded hole mounting seat.

[0011] Preferably, the bottom surface of the storage box is open and fixedly mounted on the upper platform; the first operating hole is located in the center of the top surface of the storage box, and is a countersunk hole with a diameter smaller than the diameter of the second screw nut and larger than the diameter of the inner groove; the inner groove is a hexagonal groove.

[0012] Preferably, the two groups of clamping assemblies are symmetrically arranged in the horizontal direction on both sides of the storage box, and each group of the clamping assemblies includes a first screw, a guide member, a second elastic member and a slider arranged in sequence along the radial direction of the second screw; the first screw passes through the wall of the storage box cavity, and its threaded section is connected to one end of the guide member, and the other end of the guide member abuts the slider, the second elastic member is sleeved at the abutment, and the slider contacts the second screw, and the second screw is clamped and fixed by the sliders of the two groups of clamping assemblies.

[0013] Preferably, the cross-section of the guide member is a horizontal T-shape, the central blind hole at its large diameter end is gap-fitted with the first screw, the small diameter end is sleeved with the slider boss part through the second elastic member, the diameter of the small diameter end is consistent with the diameter of the slider boss part, and both diameters are smaller than the diameter of the second elastic member.

[0014] Preferably, the contact surface between the sliding block and the second screw is a curved surface, and a guide groove extending upward along the curved surface is provided on the curved surface.

[0015] Preferably, the gasket comprises an integrally formed body and a protruding rod, the body and the ends of the protruding rod being arranged at right angles; the tail of the protruding rod is movably connected to the rotating retraction assembly.

[0016] Preferably, the rotary retraction assembly includes a spring sleeve, a first elastic member, a rotating column and a mounting support, and a receiving hole is provided inside the mounting support, which is detachably connected to the spring sleeve; the rotating column includes an integrally formed turntable and a rotating column; the gasket protrusion passes through the spring sleeve and is plugged into the turntable, and the first elastic member is sleeved on the gasket protrusion and pressed between the lower end surface of the spring sleeve and the turntable, and the whole is located in the receiving hole; the top surface of the mounting support is provided with a circumferentially and axially connected motion guide groove, and the rotating column is constrained in the guide groove.

[0017] Preferably, a damping pad is laid at the bottom of the internal accommodating hole of the mounting support; bosses are provided at the four corners of the turntable, and the ends of the gasket boss rods are provided with inner four-corner grooves adapted to the bosses.

[0018] A method for operating a retractable space locking and releasing device comprises the following steps:

[0019] Step 1: Install the storage mechanism and the rotating retraction mechanism:

[0020] The installation process of the storage mechanism is as follows: first, pre-tighten the first screws on both sides and place it upside down on the upper platform; then, connect the guide member and the slider with the second elastic member, and screw the guide member into the first screw; then, vertically place the second screw on the first through hole and tighten the first screws on both sides until the stud part of the second screw is locked, completing the installation of the storage mechanism;

[0021] The installation process of the rotary retraction mechanism is as follows: first, pass the washer protrusion through the spring sleeve, then put the first elastic member on the protrusion from the bottom, and mate the bottom of the protrusion with the rotating column; then place the assembled whole vertically on the mounting support, adjust the rotating rod so that it is located inside the axial guide groove, and connect the spring sleeve and the mounting support;

[0022] Step 2: Lock it on the ground:

[0023] Install the threaded hole mounting base and the rotary retraction mechanism on the lower platform, then push the rotating column of the rotary retraction mechanism along the motion guide groove so that the second through-hole on the gasket is concentric with the threaded hole on the threaded hole mounting base; insert the second screw through the first through-hole on the upper platform to position it, and then fix the storage box on the upper platform; then tighten the second screw to the threaded hole mounting base through the first operating hole to complete the locking operation;

[0024] Step 3: On-orbit release:

[0025] The second screw is loosened through the first operating hole until it is disconnected from the threaded hole mounting seat; the slider is driven by the first elastic member to retract the second screw into the storage box so that the end of the second screw is in the through hole of the upper platform; the gasket is passed through the second operating hole of the upper platform and rotated until the gasket and the rotating column move downward as a whole under the action of the first elastic member, thereby maintaining the gap between the upper platform and the threaded hole mounting seat;

[0026] Step 4: Recycling:

[0027] When the load re-enters, it is locked again; the second screw is pressed and locked through the first operating hole, so that the entire upper platform is driven downward, the motion gap disappears, and the upper platform and the upper plane of the threaded hole mounting seat are fitted.

[0028] Beneficial effects

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The present invention provides a locking and releasing device for a retractable space and a working method thereof. Through the coordinated operation of a rotating retracting mechanism and a retracting mechanism, the locking and releasing can be completed by rotating the rotating rod and loosening and tightening the second screw, and the operation is simple; the second screw is clamped and stored in the storage box through a horizontally arranged clamping assembly in conjunction with a storage box, and the impact during release is smaller than that of a commonly used pyrotechnic locking and releasing device; the lower plane of the second screw nut is clamped by the upper plane of the clamping assembly, and the axial force is not applied during storage, the radial force is small, and the stability is strong.

[0031] 2. The present invention provides a retractable space locking and releasing device and a working method thereof, which can complete on-ground locking, on-orbit release and recycling, and after release, a certain displacement gap can be maintained between the upper platform and the threaded hole mounting seat to meet the requirements of special loads.

[0032] 3. The present invention provides a retractable space locking and releasing device and a working method thereof. The coordinated operation of the rotary retraction mechanism and the retracting mechanism can achieve repeated locking when the space payload re-enters, meeting the usage requirements under different conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of a locking and releasing device for an accommodating space according to an embodiment of the present invention;

[0034] Figure 2 A partial cross-sectional view of a locking and releasing device for an accommodating space according to an embodiment of the present invention in a locked state;

[0035] Figure 3 A partial cross-sectional view of a storable space locking and releasing device in a released state according to an embodiment of the present invention;

[0036] Figure 4 This is a structural schematic diagram of the storage mechanism according to an embodiment of the present invention in a locked state;

[0037] Figure 5 This is a structural schematic diagram of the storage mechanism according to an embodiment of the present invention in a released state;

[0038] Figure 6 This is a schematic diagram of the structure of a slider according to an embodiment of the present invention;

[0039] Figure 7 This is an exploded view of the rotary retraction mechanism according to an embodiment of the present invention;

[0040] Figure 8 This is a schematic diagram of a mounting bracket according to an embodiment of the present invention;

[0041] Figure 9 This is a structural schematic diagram of the rotary retraction mechanism according to an embodiment of the present invention in a locked state;

[0042] Figure 10 This is a structural schematic diagram of the rotary retraction mechanism in a released state according to an embodiment of the present invention;

[0043] Description of reference numerals:

[0044] 1. Storage mechanism: 11. Storage box; 12. First screw; 13. Guide member; 14. Second elastic member; 15. Slider; 16. Second screw;

[0045] 2. Rotating retraction mechanism: 21. Gasket; 22. Spring sleeve; 23. First elastic member; 24. Rotating column; 25. Mounting support;

[0046] 3. Threaded hole mounting base. DETAILED DESCRIPTION

[0047] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] Example 1

[0050] like Figure 1-10 As shown, a locking and releasing device for a retractable space includes: a threaded hole mounting seat 3 and a retracting mechanism 1;

[0051] The threaded hole mounting seat 3 is arranged below the upper platform, and the storage mechanism 1 is installed on the upper platform; the storage mechanism 1 includes a storage box 11, a second screw 16 and a clamping assembly. The first operating hole is opened on the top surface of the storage box 11, and the bottom surface is arranged coplanar with the upper platform. The second screw 16 passes through the first through hole provided on the upper platform in the vertical direction and is detachably connected to the threaded hole mounting seat 3 below; the clamping assembly passes through the cavity wall of the storage box 11 and is arranged on both sides of the storage box 11 to clamp the second screw 16; the second screw 16 is rotated through the first operating hole to achieve locking and release, and the released second screw 16 is stored in the storage box 11.

[0052] The clamping components are symmetrically arranged on both sides of the storage box 11 in the horizontal direction. Each group of clamping components includes a first screw 12, a guide member 13, a second elastic member 14 and a slider 15. The first screw 12 passes through the cavity wall of the storage box 11, and its threaded section is connected to one end of the guide member 13. The other end of the guide member 13 abuts against the slider 15. The second elastic member 14 is sleeved at the abutment point, and the slider 15 contacts the second screw 16.

[0053] The first screw 12, the guide 13, the second elastic member 14 and the slider 15 are arranged in sequence along the radial direction of the second screw 16, and are at a certain distance from the bottom surface to prevent it from wearing against the upper platform. The second screw 16 is clamped and fixed by the slider 15 of the two sets of clamping assemblies. The cross section of the guide 13 is a horizontal T-shape, and the central blind hole at its large diameter end is loosely matched with the first screw 12, and the small diameter end is sleeved with the boss part of the slider 15 through the second elastic member 14. The large diameter end hole of the guide 13 is loosely matched with the first screw 12, and the diameter of the small diameter end is consistent with the diameter of the boss part of the slider 15, and the diameters of both are smaller than the diameter of the second elastic member 14. The second elastic member 14 is preferably a spring, and the surface of the slider 15 in contact with the second screw 16 is a curved surface, such as Figure 5 As shown, when the first screw 12 is tightened, the screw portion moves inward against the bottom of the hole of the guide member 13. When the first screw 12 is tightened on both sides, the slider 15 is pressed against the second screw 16, and the second elastic member 14 is compressed.

[0054] The storage mechanism 1 mainly has two states: locking and releasing. Figure 4 and Figure 5 As shown. When locking, through the first operating hole above the storage box 11, you can use an extension rod tool to tighten the second screw 16 until the bottom surface of the nut coincides with the upper platform. During this process, the second screw 16 squeezes the sliders 15 on both sides to move to both sides, and the second elastic member 14 is further compressed. When releasing, through the first operating hole above the storage box 11, use a wrench to loosen the second screw 16. When it is separated from the threaded hole of the threaded hole mounting base 3, under the pressure of the second elastic member 14, the second screw 16 moves upward along the curved surface of the slider 15. When fully released, the top surface of the nut will be pressed to the top of the storage box 11, and the stud part will be supported by the slider 15.

[0055] As a preferred embodiment, the contact surface between slider 15 and second screw 16 is provided with a guide groove extending upward along the curved surface. The bottom surface of storage box 11 is open and fixedly mounted to the upper platform. The first operating hole is located in the center of the bottom surface and is a countersunk hole with a diameter smaller than the diameter of the nut of second screw 16 and larger than the diameter of the inner groove.

[0056] like Figure 7 As shown, as a preferred embodiment, a retractable space locking and releasing device also includes a rotary retraction mechanism 2 provided below the upper platform, and a second operating hole is provided on the upper platform. The rotary retraction mechanism 2 includes a gasket 21 and a rotary retraction assembly. The thickness of the gasket 21 is adjusted according to the expected gap, and a second through hole is provided at one end of the gasket 21, and an inner groove is provided at the other end, and the inner groove is a hexagonal groove. The hexagonal groove of the gasket 21 of the installed rotary retraction device 2 coincides with the second operating hole reserved for the upper platform. The second through hole, the first through hole and the threaded hole mounting seat 3 are concentrically arranged, and the rotary retraction mechanism provides support and protection for the upper platform; the rotary retraction assembly is movably connected to the gasket 21 to realize vertical displacement adjustment; when released, a motion gap is formed between the upper platform and the threaded hole mounting seat 3.

[0057] The gasket 21 comprises an integrally formed body and a protruding rod, wherein the body and the ends of the protruding rod are arranged at right angles; the tail end of the protruding rod is slidably connected to the rotating retracting assembly.

[0058] The rotary retraction assembly includes a spring sleeve 22, a first elastic member 23, a rotating column 24 and a mounting support 25. A receiving hole is provided inside the mounting support 25, which is detachably connected to the spring sleeve 22. The rotating column 24 includes an integrally formed turntable and a rotating column; the protruding rod of the gasket 21 passes through the spring sleeve 22 and is plugged into the turntable. The first elastic member 23 is sleeved on the protruding rod of the gasket 21 and is pressed between the lower end surface of the spring sleeve 22 and the turntable, and the whole is located in the receiving hole; the top surface of the rotating mounting support 25 is provided with a circumferentially and axially connected motion guide groove, and the rotating column is constrained in the guide groove.

[0059] like Figure 8 As shown, the top of the spring sleeve 22 is provided with a through hole, allowing the protruding rod on the right side of the gasket 21 to pass through, and the bottom surface is detachably connected to the upper plane of the mounting support 25, for example, by bolt connection. The first elastic member 23 is preferably a spring, whose diameter is larger than the through hole at the top of the spring sleeve 22. It is sleeved on the protruding rod of the gasket 21, with one end pressing inside the spring sleeve 22 and the other end pressing on the turntable of the rotating column 24. The turntable of the rotating column 24 has four-corner protrusions that snap into place with the inner four-corner grooves of the protruding rod of the gasket 21, driving the gasket 21 to rotate. The bottom surface of the mounting support 25 is connected to the lower platform, and a rubber pad or damping pad is laid at the bottom of the internal receiving hole of the mounting support 25 to further reduce the impact force generated during release.

[0060] like Figure 9 and Figure 10 As shown, the rotary retraction device 2 mainly has two states. When locked, the rotating rod of the rotating column 24 is at the leftmost side of the motion guide groove. At this time, the second through hole of the gasket 21, the threaded hole of the threaded hole mounting seat 3 and the first through hole of the upper platform coincide with each other, so that the second screw 16 in the storage mechanism 1 can be successfully locked. When released, the operator, such as an astronaut, uses an extension rod tool to rotate the hexagonal groove of the gasket 21 through the second operating hole of the upper platform to rotate it, and at the same time drives the rotating column 24 to rotate counterclockwise along the motion guide groove. When rotated to the axial guide groove, under the action of the first elastic member 23, the rotating rod of the rotating column 24 is compressed to the bottom along the axial guide groove. At the same time, the gasket 21 is driven to move downward to leave a motion gap between the upper platform and the threaded hole mounting seat 3.

[0061] The bottom of the threaded hole mounting seat 3 is connected to the lower platform. When locked, it is connected with the second screw 16, and the upper plane is in contact with the gasket 21. When unlocked, a certain gap is maintained between the upper platform and the threaded hole mounting seat 3.

[0062] To meet the special load requirements of space, a connecting spring is pre-installed between the lower and upper platforms of this device. When locked, the gap between the lower surface of the upper platform and the threaded hole mounting seat 3 is filled with a gasket 21. Considering that space loads typically require a long period of time in a locked state before unlocking for use, to prevent the connecting spring from being compressed for a long time, affecting its spring stiffness and, in turn, the operating requirements of the upper and lower platforms, the connecting spring in the locked state is maintained at its free length, i.e., it provides no elastic force. After on-track unlocking and release, the gasket 21 is retracted into the mounting support 25, leaving a certain gap between the lower surface of the upper platform and the threaded hole mounting seat 3. In the microgravity environment of space, the connecting spring remains at its free length. If relative displacement occurs between the upper and lower platforms, the connecting spring provides a certain elastic force, maintaining a certain gap between the upper and lower platforms, preventing excessive separation or collision between the upper and lower platforms, and thus meeting the operating requirements of the upper and lower platforms.

[0063] Example 2:

[0064] A method for operating a retractable space locking and releasing device comprises the following steps:

[0065] Step 1: Install the storage mechanism 1 and the rotating retraction mechanism 2:

[0066] First, screw in the first screws 12 on both sides a certain distance, then place the storage box 11 upside down on the platform. Then, slide the second elastic member 14 over the boss of the guide member 13 and the boss of the wedge-shaped slider 15, and fit the hole of the guide member 13 of the connector over the screwed-in first screw 12. Finally, vertically place the second screw 16 over the hole of the storage box 11 and tighten the first screws 12 on both sides until the stud of the second screw 16 is engaged. This completes the installation of the storage mechanism 1.

[0067] First, insert the right protrusion of gasket 21 through spring sleeve 22. Then, slide the first elastic member 23 onto the protrusion from below. Assemble the components together, aligning the base of the protrusion with the rotating post 24. Align the assembled assembly vertically on mounting bracket 25, aligning the threaded holes, and adjust the protrusion of rotating post 24 so that it rests within the axial guide groove of mounting bracket 25. Finally, threadably connect spring sleeve 22 and mounting bracket 25 to complete the installation of rotary retraction mechanism 2.

[0068] Step 2: Lock it on the ground:

[0069] First, install the threaded hole mount 3 and the rotary retraction mechanism 2 on the lower platform. Then, push the protruding rod of the rotating column 24 upward along the motion guide groove, then to the left, until it is tangent to the left side. At this point, the second through-hole on the gasket 21 is concentric with the threaded hole on the threaded hole mount 3 and the first through-hole on the upper platform, with no deviation. Position the second screw 16 in the storage mechanism 1 through the first through-hole on the upper platform, and then secure the storage box 11 to the upper platform. Finally, use a torque wrench to tighten the second screw 16 into the threaded hole on the threaded hole mount 3 to complete the tightening operation.

[0070] Step 3: On-orbit release:

[0071] It is mainly divided into the realization of release and displacement gap. First, the astronaut uses an extension rod tool to remotely pass through the first operating hole on the top of the storage box 11 to loosen the second screw 16 counterclockwise until it is disconnected from the threaded hole mounting seat 3. At this time, the pressure on the second screw 16 is reduced. The second screw 16 can drive the slider 15 to push the screw vertically upward under the pressure of the second elastic member 14, so that it can be recovered in the storage box 111. At this time, the end of the stud part of the second screw 16 is in the first through hole of the upper platform. Observe that the top of the nut of the second screw 16 has reached the top of the storage box 11, and then retract the second operating hole through the rotation of the upper platform, rotate the gasket 21 counterclockwise, and the gasket 21 can rotate normally. When both conditions are met, it means that the unlocking is successful and the second screw 16 is also completely stored.

[0072] Continue rotating the washer 21, and the rotating rod portion of the rotating column 24 will also rotate counterclockwise along the guide groove on the mounting support 25. When the washer 21 and the rotating column 24 reach the axial guide groove, the first elastic member 23 will cause the washer 21 and the rotating column 24 to move downward as a whole, and the washer 21 will no longer rotate. This completes the operation. In a space environment, a clearance of the thickness of the washer 21 will be maintained between the upper platform and the threaded hole mounting base 3, thus achieving displacement clearance.

[0073] Step 4: Recycling:

[0074] The astronaut uses an extension rod tool to press and lock the second screw 16 through the first operating hole of the storage box 11. At this time, the entire upper platform and the load on it are driven downward, so that the movement gap disappears, and the upper plane of the upper platform and the threaded hole mounting seat 3 fit together, completing reuse.

[0075] The present invention provides a retractable space locking and releasing device and its operating method, capable of achieving on-ground locking, on-orbit release, and recycling. After release, a certain displacement gap can be maintained between the upper platform and the threaded hole mounting seat 3 to meet special load requirements. Locking and releasing can be achieved by simply rotating the rotating rod and loosening or tightening the second screw 16, which is simple to operate. A first transverse spring drives the slider 15 to clamp and store the second screw 16 within the storage box 11, resulting in less impact during release than conventional pyrotechnic locking and releasing devices. The upper surface of the slider 15 clamps the lower surface of the nut, eliminating axial stress during storage and reducing radial stress, resulting in enhanced stability. Repeated locking can also be achieved during reentry of the space payload.

[0076] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A locking and releasing device for a retractable space, characterized in that: include: A threaded hole mounting seat and a storage mechanism; the threaded hole mounting seat is arranged below the upper platform, and the storage mechanism is installed above the upper platform; The storage mechanism includes a storage box, a second screw, and a clamping assembly; the storage box has a first operating hole on its top surface, and its bottom surface is coplanar with the upper platform; the second screw passes through a first through-hole on the upper platform in a vertical direction and is detachably connected to a threaded hole mounting seat below; the clamping assembly penetrates the storage box cavity wall and is arranged on both sides of the storage box to clamp the second screw; the second screw is rotated through the first operating hole to achieve locking and release, and the released second screw is stored in the storage box; The locking and releasing device also includes a rotary retraction mechanism provided below the upper platform, a second operating hole provided on the upper platform, the rotary retraction mechanism including a gasket and a rotary retraction assembly, a second through hole provided at one end of the gasket and an inner groove provided at the other end; when locked, the second through hole, the first through hole and the threaded hole of the threaded hole mounting seat are coaxially arranged in sequence, the inner groove and the second operating hole are concentrically arranged, and the rotary retraction mechanism provides support and protection for the upper platform; the rotary retraction assembly is movably connected to the gasket to realize vertical displacement adjustment; when released, a movement gap is formed between the upper platform and the threaded hole mounting seat; The gasket comprises an integrally formed body and a protruding rod, wherein the body and the end of the protruding rod are arranged at right angles; the tail of the protruding rod is movably connected to the rotating retraction assembly; The rotary retraction assembly includes a spring sleeve, a first elastic member, a rotating column and a mounting support. A receiving hole is provided inside the mounting support, which is detachably connected to the spring sleeve; the rotating column includes an integrally formed turntable and a rotating column; the gasket protrusion passes through the spring sleeve and is plugged into the turntable, and the first elastic member is sleeved on the gasket protrusion and pressed between the lower end surface of the spring sleeve and the turntable, and is located in the receiving hole as a whole; the top surface of the mounting support is provided with a circumferentially and axially connected motion guide groove, and the rotating column is constrained in the guide groove.

2. The storable space locking and releasing device according to claim 1, characterized in that: The bottom surface of the storage box is open and fixedly mounted on the upper platform; the first operating hole is located in the center of the top surface of the storage box and is a countersunk hole with a diameter smaller than the diameter of the second screw nut and larger than the diameter of the inner groove; the inner groove is a hexagonal groove.

3. The storable space locking and releasing device according to claim 2, characterized in that: The two groups of clamping assemblies are symmetrically arranged in the horizontal direction on both sides of the storage box, and each group of the clamping assemblies includes a first screw, a guide, a second elastic member and a slider arranged in sequence along the radial direction of the second screw; the first screw passes through the cavity wall of the storage box, and its threaded section is connected to one end of the guide member, and the other end of the guide member abuts the slider, the second elastic member is sleeved at the abutment, and the slider contacts the second screw, and the second screw is clamped and fixed by the sliders of the two groups of clamping assemblies.

4. The storable space locking and releasing device according to claim 3, characterized in that: The cross-section of the guide member is a horizontal T-shape, the central blind hole at its large diameter end is gap-fitted with the first screw, the small diameter end is sleeved with the slider boss part through the second elastic member, the diameter of the small diameter end is consistent with the diameter of the slider boss part, and both diameters are smaller than the diameter of the second elastic member.

5. The storable space locking and releasing device according to claim 4, characterized in that: The contact surface between the sliding block and the second screw is a curved surface, and a guide groove is provided on the curved surface upward along the curved surface.

6. The storable space locking and releasing device according to claim 5, characterized in that: A damping pad is laid on the bottom of the internal accommodating hole of the mounting support; bosses are provided at the four corners of the turntable, and the ends of the gasket boss rods are provided with inner four-corner grooves adapted to the bosses.

7. A method for operating the storable space locking and releasing device according to claim 6, characterized in that: The method comprises the following steps: Step 1: Install the storage mechanism and the rotating retraction mechanism: The installation process of the storage mechanism is as follows: first, pre-tighten the first screws on both sides and place it upside down on the upper platform; then, connect the guide member and the slider with the second elastic member, and screw the guide member into the first screw; then, vertically place the second screw on the first through hole and tighten the first screws on both sides until the stud part of the second screw is locked, completing the installation of the storage mechanism; The installation process of the rotary retraction mechanism is as follows: first, pass the washer protrusion through the spring sleeve, then put the first elastic member on the protrusion from the bottom, and mate the bottom of the protrusion with the rotating column; then place the assembled whole vertically on the mounting support, adjust the protrusion so that it is located inside the guide groove, and connect the spring sleeve and the mounting support; Step 2: Lock it on the ground: Install the threaded hole mounting base and the rotary retraction mechanism on the lower platform, then push the rotating column of the rotary retraction mechanism along the motion guide groove so that the second through-hole on the gasket is concentric with the threaded hole on the threaded hole mounting base; insert the second screw through the first through-hole on the upper platform to position it, and then fix the storage box on the upper platform; then tighten the second screw to the threaded hole mounting base through the first operating hole to complete the locking operation; Step 3: On-orbit release: The second screw is loosened through the first operating hole until it is disconnected from the threaded hole mounting seat; the slider is driven by the first elastic member to retract the second screw into the storage box so that the end of the second screw is in the through hole of the upper platform; the gasket is passed through the second operating hole of the upper platform and rotated until the gasket and the rotating column move downward as a whole under the action of the first elastic member, thereby maintaining the gap between the upper platform and the threaded hole mounting seat; Step 4: Recycling: When the load re-enters, it is locked again; the second screw is pressed and locked through the first operating hole, so that the entire upper platform is driven downward, the motion gap disappears, and the upper platform and the upper plane of the threaded hole mounting seat are fitted.

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