A support plate spherical nut assembly adapting to door cover deformation connection

Abstract

The present invention discloses a support plate spherical nut assembly that adapts to the deformation connection of the door cover, including a support plate, a nut gasket, a nut limiting shell and a support plate spherical nut, wherein the support plate and the nut gasket are respectively provided with a through hole, the support plate spherical nut is provided with a threaded hole, the two ends of the nut gasket are respectively provided with ear pieces, the support plate is provided with a limiting hole for the ear piece to move, the nut limiting shell is connected to the nut gasket, the nut limiting shell is provided with an anti-rotation hole, the support plate spherical nut has a spherical structure at one end and an anti-rotation end at the other end, the nut gasket is provided with a spherical groove, and a movable gap is provided between the anti-rotation end and the anti-rotation hole. The support plate spherical nut of the present invention is arranged in a movable cavity, reducing or even avoiding the influence of the working environment and the deformation of the external mounting components on the position of the support plate spherical nut, having a simple structure and convenient installation, and can be adaptively connected and disassembled with the screw to achieve repeated locking, and can be widely applied to aerospace equipment.

Description

Technical Field

[0001] The invention relates to a supporting plate spherical nut assembly adaptable to deformation connection of a door cover, belonging to the technical field of aviation fasteners. Background Art

[0002] Structural components of large aerospace equipment are usually connected using fasteners such as screws and nuts. If the door cover of a spacecraft equipment needs to be opened and closed repeatedly, a repeated locking device needs to be installed for connection.

[0003] After large-scale aerospace equipment is assembled on the ground and leaves the factory, it goes through various stages of transfer, debugging, launch, and in-orbit operation. Especially after operating in the outer space environment for a period of time, the door cover (thin-walled structure) and its connections will undergo certain deformation and displacement.

[0004] When aerospace equipment needs to undergo on-orbit maintenance, traditional fastener connections will be unable to be properly disassembled and installed due to the mechanical environment, space environment, and especially the alternating hot and cold conditions, causing misalignment of the mounting holes in the equipment structure and warping and deformation of the honeycomb panel structure. This can lead to the inability to smoothly carry out on-orbit maintenance of aerospace equipment and even damage to the equipment.

[0005] That is to say, when facing fasteners in an outer space environment, due to the deformation and displacement of the installation position of the screw assembly, such as the door cover, the nut connected to the screw cannot cooperate well with the screw to achieve repeated opening and closing of the door cover; or when the position of the nut assembly, such as the cabin where the door cover is installed, is deformed or displaced, due to the change in the position of the nut, there is also the possibility that it cannot be connected or disconnected from the screw to achieve the purpose of repeated opening and closing of the door cover. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a support plate spherical nut assembly which is adaptable to deformation connection of a door cover.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a support plate spherical nut assembly that adapts to the deformation connection of the door cover, including a support plate, a nut gasket, a nut limiting shell and a support plate spherical nut arranged between the nut gasket and the nut limiting shell, the support plate and the nut gasket are respectively provided with through holes, the support plate spherical nut is provided with a threaded hole, the two ends of the nut gasket are respectively provided with ears, the support plate is provided with a limiting hole for the movement of the ear, the nut limiting shell is connected to the nut gasket, the nut limiting shell is provided with an anti-rotation hole, one end of the support plate spherical nut is provided with a spherical structure, and the other end is an anti-rotation end that cooperates with the anti-rotation hole, the nut gasket is provided with a spherical groove that matches the spherical structure, and a movable gap is provided between the anti-rotation end and the anti-rotation hole.

[0008] The beneficial effects of the present invention are as follows: the support plate spherical nut can move in the anti-rotation hole through the movable gap, and the anti-rotation hole only limits the rotation of the support plate spherical nut to prevent it from rotating. When the support plate spherical nut is subsequently matched with the screw, the screw can be smoothly threaded with the support plate spherical nut, and the nut gasket can move in the limiting hole of the support plate through its ear piece. The spherical structure of the support plate spherical nut cooperates with the spherical groove on the nut gasket, so that the support plate spherical nut can move on the spherical groove of the nut gasket, and the support plate spherical nut can be displaced up, down, front, back, left or right. The support plate spherical nut will not be affected by the working environment and component deformation. The support plate spherical nut will be tolerance-corrected under the drive of the nut gasket, so that the support plate spherical nut is limited in the movable cavity between the nut gasket and the nut limiting shell to smoothly realize the connection between the support plate spherical nut and the screw. The support plate spherical nut of the present invention is movably arranged in a movable cavity formed by a nut limiting shell and a nut gasket, reducing or even avoiding the influence of the working environment and deformation of external mounting components on the position of the support plate spherical nut. It has a simple structure and is easy to install. It can adaptively connect and disassemble with the screw to achieve repeated locking, and can be widely used in aerospace equipment.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the support plate adopts a split structure, and the support plate includes a first support plate and a second support plate that are connected to each other. The limiting hole includes a first limiting hole and a second limiting hole. The first limiting hole is set on the first support plate, and the second limiting hole is set on the second support plate.

[0011] The beneficial effect of adopting the above-mentioned further scheme is that the support plate adopts a split structure, which is intended to facilitate the installation and coordination of the ear piece on the nut gasket with the limiting hole of the support plate, while reducing the axial dimension of the limiting hole, reducing or even avoiding the movement of the nut gasket in the axial direction, and preparing for the rapid locking and disengagement of the support plate spherical nut and the screw that cooperates with it.

[0012] Furthermore, the ear piece can be radially movable and correspondingly arranged in the first limiting hole and the second limiting hole.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that the axial displacement of the nut gasket can be limited by the limiting hole, allowing the ear to move radially in the limiting hole, and even controlling the nut gasket to have no axial displacement. The nut gasket has radial displacement but no axial displacement, and the nut limiting shell and the nut gasket can be limited to have no axial angular tolerance, thereby effectively controlling the axial angular tolerance of the spherical nut of the support plate and meeting the requirements of the use conditions. If the axial displacement is increased, the ear may fall off from the support plate under the conditions of the wrench force and the displacement limit of the nut gasket, causing the support plate spherical nut, the nut limiting shell and the nut gasket to fail in position.

[0014] Furthermore, an alignment and locking mechanism is provided on the mating surface side of the first support plate and the second support plate.

[0015] The beneficial effect of adopting the above further solution is that the purpose of the alignment and engagement mechanism is to further ensure the accuracy and speed of docking the first pallet and the second pallet, while also meeting the requirements for stability of subsequent pallet docking.

[0016] Furthermore, the alignment locking mechanism includes at least one protrusion and a corresponding slot that cooperates with the protrusion, the protrusion is arranged on the first support plate or the second support plate, and the slot is arranged on the second support plate or the first support plate.

[0017] The beneficial effect of adopting the above-mentioned further scheme is that the protrusion of one pallet is inserted into the groove of another pallet, the matching operation is convenient and quick, the docking position is accurate, and the stability after docking is high. The docking between the first pallet and the second pallet is not only convenient and quick to assemble, but also ensures the accuracy and stability of the pallet docking.

[0018] Furthermore, a tapered hole structure is provided at the entrance of the threaded hole of the supporting plate spherical nut, and the aperture of the through hole is equal to or larger than the aperture of the tapered hole structure.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that the support plate spherical nut can move on the spherical groove of the nut gasket, that is, the support plate spherical nut has a certain tolerance in the axial and radial directions before locking. The designed conical hole structure on the support plate spherical nut allows the screw to find the internal thread of the support plate spherical nut that matches it more quickly and easily, thereby smoothly threading the connection.

[0020] Furthermore, the first support plate and the second support plate both include a plate body and a limiting vertical plate arranged on the outside of the plate body, and the first limiting hole and the second limiting hole are both arranged on the corresponding limiting vertical plate, or the first limiting hole and the second limiting hole are both arranged between the plate body and the limiting vertical plate.

[0021] The beneficial effect of adopting the above-mentioned further scheme is that the limiting hole can be provided on the limiting vertical plate, or it can be provided at the connection position between the limiting vertical plate and the plate body. The ear piece on one side of the nut gasket can be inserted into the first limiting hole, and the ear piece on the other side can be inserted into the second limiting hole. The second support plate is docked with the first support plate. After the first support plate and the second support plate are docked and positioned, the radial movement of the nut gasket can be satisfied, and at the same time, there is a certain limiting effect in the axial direction, which avoids the axial transition movement of the nut gasket affecting the subsequent installation and disengagement efficiency of the screw and the support plate spherical nut.

[0022] Furthermore, the plate body and the limiting vertical plate are an integrated structure.

[0023] The beneficial effect of adopting the above-mentioned further scheme is that the limiting vertical plate and the plate body are an integrated structure. For example, the limiting vertical plate can be formed by bending the support plate. The support plate with an integrated structure not only has strong supporting strength, but also reduces other connecting parts. It is not only light in weight, but also more convenient to install.

[0024] Furthermore, the support plate is provided with an external mounting hole, and the support plate is arranged on the nut mounting piece through the external mounting hole.

[0025] The beneficial effect of adopting the above-mentioned further scheme is that an external mounting hole is also provided on the support plate for the external mounting of the nut assembly. The support plate can be mounted on the nut mounting part by passing a fastener through the external mounting hole, and then the nut assembly is installed in the required position, such as on the cover or on the cover frame, through the nut mounting part to facilitate the subsequent opening and closing of the cover on the spacecraft.

[0026] Furthermore, the nut mounting piece is provided with a limit block A on the side connected to the fastener.

[0027] The beneficial effect of adopting the above-mentioned further scheme is that the limit block A can limit the threaded connection position of the subsequent screw and nut assembly. In addition, the limit block can also be provided with a friction coating or a high-friction coating, which can inhibit the sliding of the mating surfaces of the nut assembly and the screw assembly during vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the main structure of the nut assembly of the present invention;

[0029] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0030] Figure 3 Schematic diagram of the rear structure of the nut assembly of the present invention;

[0031] Figure 4 Schematic diagram of the three-dimensional structure of the nut assembly of the present invention from an angle 1;

[0032] Figure 5 This is a schematic diagram of the three-dimensional structure of the nut assembly of the present invention from an angle 2;

[0033] Figure 6 Schematic diagram of the split structure of the nut assembly of the present invention at angle 1;

[0034] Figure 7 This is a schematic diagram of the split structure of the nut assembly of the present invention at angle 2;

[0035] Figure 8 This is a schematic diagram of the main structure of the repeated locking device of the present invention;

[0036] Figure 9 for Figure 8 Schematic diagram of the cross-sectional structure along the BB direction;

[0037] Figure 10 This is a schematic top view of the structure of the repeated locking device of the present invention;

[0038] Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure along CC direction;

[0039] Figure 12 Schematic diagram of the split structure of the screw assembly of the present invention;

[0040] Figure 13 This is a schematic structural diagram of the repeated locking device of the present invention at angle 1;

[0041] Figure 14 This is a schematic structural diagram of the second angle of the repeated locking device of the present invention;

[0042] In the figure, 1. support plate spherical nut; 101. spherical structure; 102. anti-rotation end; 103. threaded hole; 104. conical hole structure; 2. nut limiting shell; 201. anti-rotation hole; 3. nut gasket; 301. spherical groove; 302. ear; 4. first support plate; 401. first limiting hole; 5. second support plate; 501. second limiting hole; 6. nut mounting part; 7. screw; 701. flange limiting part; 702. inner connecting section; 703. conical structure; 704. outer wrench section; 705. wrench structure; 8. screw limiting shell; 801. screw limiting hole; 9. spring; 10. anti-slip gasket; 11. screw mounting part; 12. limiting block B; 13. limiting block A. DETAILED DESCRIPTION

[0043] The principles and features of the present invention are described below with reference to examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0044] like Figure 1-Figure 7As shown, a support plate spherical nut assembly that adapts to the deformation connection of the door cover includes a support plate, a nut gasket 3, a nut limiting shell 2 and a support plate spherical nut 1 arranged between the nut gasket 3 and the nut limiting shell 2, the support plate and the nut gasket 3 are respectively provided with through holes, the support plate spherical nut 1 is provided with a threaded hole 103, the two ends of the nut gasket 3 are respectively provided with ears 302, the support plate is provided with limiting holes for the movement of the ears 302, the nut limiting shell 2 is connected to the nut gasket 3, the nut limiting shell 2 is provided with an anti-rotation hole 201, one end of the support plate spherical nut 1 is provided with a spherical structure 101, and the other end is an anti-rotation end 102 that cooperates with the anti-rotation hole 201, the nut gasket 3 is provided with a spherical groove 301 that is adapted to the spherical structure 101, and a movable gap is provided between the anti-rotation end 102 and the anti-rotation hole 201.

[0045] The support plate adopts a split structure, comprising a first support plate 4 and a second support plate 5 that are butted together. The limiting holes include a first limiting hole 401 and a second limiting hole 501. The first limiting hole 401 is provided on the first support plate 4, and the second limiting hole 501 is provided on the second support plate 5. The split structure of the support plate is intended to facilitate the installation and mating of the lug 302 on the nut washer 3 with the limiting holes of the support plate, while also reducing the axial dimension of the limiting holes, minimizing or even eliminating axial movement of the nut washer 3, and facilitating the rapid tightening and loosening of the support plate's spherical nut 1 and the screw 7 that cooperates with it.

[0046] The ear piece 302 is radially movable and is correspondingly arranged in the first limiting hole 401 and the second limiting hole 501. The limiting hole can limit the axial displacement of the nut gasket, allowing the ear piece to move radially in the limiting hole, and even control the nut gasket to have no axial displacement. The nut gasket has radial displacement but no axial displacement, which can limit the axial angle tolerance of the nut limiting shell and the nut gasket, thereby effectively controlling the axial angle tolerance of the support plate spherical nut and meeting the requirements of the use conditions. If the axial displacement is increased, the ear piece may be detached from the support plate under the conditions of the wrench force and the displacement limit of the nut gasket, causing the support plate spherical nut, the nut limiting shell and the nut gasket to fail in position.

[0047] The first support plate 4 and the second support plate 5 are provided with an alignment and locking mechanism on their docking surfaces. The alignment and locking mechanism is intended to further ensure accuracy and speed when the first support plate 4 and the second support plate 5 are docked, while also meeting the requirements for subsequent support plate docking stability.

[0048] The alignment and engagement mechanism includes at least one protrusion and a corresponding slot that cooperates with the protrusion. The protrusion is provided on the first support plate 4 or the second support plate 5, and the slot is provided on the second support plate 5 or the first support plate 4. The protrusion of one support plate is correspondingly inserted into the groove of the other support plate, which makes the mating operation convenient and fast, the docking position is accurate, and the stability after docking is high. The docking between the first support plate 4 and the second support plate 5 is not only convenient and fast to assemble, but also ensures the accuracy and stability of the docking of the support plates.

[0049] A tapered hole structure 104 is provided at the entrance of the threaded hole 103 of the support plate spherical nut 1. The diameter of the through hole is equal to or larger than the diameter of the tapered hole structure 104. The support plate spherical nut 1 can move within the spherical groove 301 of the nut washer 3. In other words, before tightening, the support plate spherical nut 1 has a certain tolerance in the axial and radial directions. The tapered hole structure 104 is designed on the spherical structure side of the support plate spherical nut 1, allowing the screw 7 to more quickly and easily find the internal thread of the support plate spherical nut 1 with which it cooperates, thereby smoothly threading the connection.

[0050] The first support plate 4 and the second support plate 5 both include a plate body and a limiting vertical plate provided on the outside of the plate body. The first limiting hole 401 and the second limiting hole 501 are both provided on the corresponding limiting vertical plate, or the first limiting hole 401 and the second limiting hole 501 are both provided between the plate body and the limiting vertical plate. The limiting hole can be provided on the limiting vertical plate or at the connection position between the limiting vertical plate and the plate body. The ear piece 302 on one side of the nut washer 3 is inserted into the first limiting hole 401, and the ear piece 302 on the other side can be inserted into the second limiting hole 501. The second support plate 5 is docked with the first support plate 4. After the first support plate 4 and the second support plate 5 are docked and positioned, the radial movement of the nut washer 3 can be satisfied. At the same time, there is a certain limiting effect in the axial direction, which prevents the axial transition movement of the nut washer 3 from affecting the subsequent installation and disengagement efficiency of the screw 7 and the support plate ball nut 1.

[0051] The plate body and the limiting vertical plate are an integrated structure. The limiting vertical plate and the plate body are an integrated structure. For example, the limiting vertical plate can be formed by bending the supporting plate. The integrated supporting plate not only has a strong supporting strength, but also reduces other connecting parts, is not only light in weight, but also more convenient to install.

[0052] The support plate is provided with an external mounting hole, through which the support plate is mounted on the nut mounting member 6. The support plate is also provided with an external mounting hole for external mounting of the nut assembly. The support plate can be mounted on the nut mounting member 6 by fasteners passing through the external mounting hole. The nut assembly can then be mounted in a desired position, such as on the flap or flap frame, through the nut mounting member 6 to facilitate subsequent opening and closing of the flap on the spacecraft.

[0053] The nut mounting member 6 is provided with a stopper A13 on the side where it connects to the fastener. The stopper A13 limits the position of the subsequent threaded connection between the screw 7 and the nut assembly. In addition, the stopper A13 can also be provided with a friction coating or a high-friction coating to prevent the mating surfaces of the nut assembly and the screw 7 assembly from sliding against each other during vibration.

[0054] The nut assembly is part of a repeated locking device. When in use, it must be coordinated with the screw assembly of the repeated locking device. The nut assembly is installed on the cabin of the spacecraft equipment, and the screw assembly is installed on the door cover. One side of the door cover is hinged to the cabin, and there is a door handle on the other side. There are multiple repeated locking devices connecting the door cover and the cabin. The repeated locking devices can realize repeated opening and closing of the door cover.

[0055] like Figures 8-14 As shown, a repeated locking device includes the nut assembly as above, and also includes a screw assembly connected to the nut assembly, the support plate of the nut assembly is connected to the nut mounting member 6, the screw assembly includes a screw 7, a screw limiting shell 8 and a spring 9, one end of the screw limiting shell 8 is connected to the screw mounting member 11, and the other end is provided with a screw limiting hole 801, the screw 7 is provided with a flange limiting portion 701 arranged in the screw limiting shell 8, and the spring 9 is sleeved on the outside of the screw 7 between the flange limiting portion 701 and the screw mounting member 11.

[0056] The screw mounting member 11 can be a door cover embedded member, such as a honeycomb panel embedded member; the nut mounting member 6 can be a vertical plate, or a connecting corner box, such as an L-shaped corner box or angle iron. The screw mounting member, such as a door cover embedded member, is installed on the door cover. The nut mounting member, such as a connecting corner box, is installed on one folded edge of the nut assembly, while the other folded edge is installed on the cabin of the spacecraft equipment.

[0057] An anti-slip pad 10 is also provided between the screw limiting housing 8 and the screw mounting member 11. The screw limiting housing 8 and the screw mounting member 11 can maintain a required distance through the anti-slip pad 10. In addition, the anti-slip pad 10 can play a role of shock absorption in a vibration environment.

[0058] The screw 7 includes an inner connecting section 702 and an outer tightening section 704 connected to the inner connecting section 702. The flange limiting portion 701 is provided on the inner connecting section 702. The free end of the inner connecting section 702 is a conical structure 703. The outer tightening section 704 is provided with a tightening structure 705. The inner connecting section 702 of the screw 7 is placed in the screw limiting housing 8. The tightening section thereof extends out of the screw limiting housing 8 under the action of the spring 9. If the screw 7 adopts an internal tightening structure 705, there may be a situation where the tightening structure 705 is blocked or the screw becomes tangled during the tightening process. Once such a situation occurs, the screw cannot be operated in outer space, and it is also inconvenient for astronauts to observe. Therefore, an external tightening structure 705 is adopted. The external tightening structure 705 not only facilitates visual operation by astronauts in the vacuum environment of outer space, but also facilitates other methods to separate the screw 7 from the nut if tangling occurs. During the locking operation, the conical structure 703 of the screw 7 will make it easier for the screw 7 to be introduced into the internal threaded hole 103 of the support plate spherical nut 1. The internal connecting section 702 has a smooth rod section and a threaded section. The outer diameter of the smooth rod section is larger than the outer diameter of the threaded section, so that the screw 7 can withstand greater radial shear force in the locked state.

[0059] The wrench structure 705 is an external hexagonal structure. The external hexagonal flange screw 7 protrudes from the external hexagonal structure and is wrenchable with a hexagonal wrench, which is easy to operate and facilitates the locking and separation of the repeated locking device.

[0060] The diameter of the screw stop hole 801 is larger than the outer diameter of the shank of the screw 7. A reflective identification area is provided on the outer surface of the flange stop portion 701. When the screw 7 and nut are loosened, the spring 9 causes the flange stop portion 701 of the screw 7 to reach the top of the screw stop housing 8. The reflective identification area on the top surface of the flange stop portion 701 illuminates through the screw stop hole 801, forming an indicator ring, indicating that the screw 7 is fully loosened and no further operation is required.

[0061] The screw mounting member 11 is provided with a first stopper 12, and / or the nut mounting member 6 is provided with a stopper A13. Both the first stopper 12 and the stopper A13 are provided with a screw hole for the screw 7 to pass through. The stopper limits and positions the screw 7 and the support plate ball nut 1 in a locked position. The stopper can also be used to adjust the locked position of the screw 7 and the nut. Furthermore, the stopper reduces wear on other components during the locking process.

[0062] The contact surface of the stop block A13 and / or the first stop block 12 is provided with a friction coating or a high friction coating. During the vibration process, the high friction coating can inhibit the mutual sliding between the two to prevent movement, and at the same time can also reduce the wear of the stop block.

[0063] When preparing to tighten the re-locking device, it is necessary to first press the screw 7 so that the conical structure 703 of the screw 7 contacts the conical hole structure 104 of the support plate ball nut 1 and continue to guide it downward. When the external thread of the screw 7 contacts the internal thread of the support plate ball nut 1, the tightening structure 705 on the screw 7, such as the protruding external hexagonal structure on the screw 7, begins to rotate and tighten. The tightening stops when the first limit block 12 contacts the second limit block 13. The screw 7 is locked with the support plate ball nut 1. In the locked state, the spring 9 is compressed to the flange limit portion 701, providing anti-loosening force to the screw 7, making the locking more reliable. If there is a deviation between the hole position of the screw 7 and the support plate spherical nut 1, the nut washer 3 will drive the support plate spherical nut 1 to perform tolerance correction, with a radial tolerance of 2.5mm and an axial tolerance of 5°. In order to ensure that the support plate spherical nut 1 has no axial movement tolerance, the axial direction of the nut washer 3 needs to be a sliding fit with no movement tolerance gap. The limiting hole on the support plate can be 2.5mm larger than the ear piece 302 of the nut washer 3 in the radial X direction, that is, the length direction of the limiting hole. In the radial Y direction, the Y direction of the support plate needs to be larger than the Y direction of the nut washer 3 on one side. 2.5mm larger; when the repeated locking device is ready to be opened, it is only necessary to twist the protruding external hexagonal structure on the screw 7 to separate the external thread of the screw 7 from the internal thread of the support plate spherical nut 1, and then the screw 7 is bounced up under the elastic force of the spring 9 to disconnect the screw 7 from the support plate spherical nut 1. The spring 9 acts on the flange limit part 701 of the screw 7 to make it rest against the screw limit hole 801. The reflective identification area of ​​the flange limit part 701 that penetrates the screw 7 limit part will light up to indicate that the screw 7 has been loosened into place and no further twisting is required. Disassembly and assembly are convenient, saving time and effort.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A re-locking device, characterized in that: The invention comprises a support plate spherical nut assembly adapted to deformation connection of a door cover, the support plate spherical nut assembly comprising a support plate, a nut washer (3), a nut limiting shell (2) and a support plate spherical nut (1) arranged between the nut washer (3) and the nut limiting shell (2), the support plate and the nut washer (3) are respectively provided with through holes, the support plate spherical nut (1) is provided with a threaded hole (103), the two ends of the nut washer (3) are respectively provided with ear pieces (302), and the support plate is provided with a plurality of ear pieces (302) for receiving the ear pieces (302). A movable limiting hole, the nut limiting shell (2) is connected to the nut gasket (3), the nut limiting shell (2) is provided with an anti-rotation hole (201), one end of the support plate spherical nut (1) is provided with a spherical structure (101), and the other end is an anti-rotation end (102) matched with the anti-rotation hole (201), the nut gasket (3) is provided with a spherical groove (301) adapted to the spherical structure (101), and a movable gap is provided between the anti-rotation end (102) and the anti-rotation hole (201); It also includes a screw assembly connected to the supporting plate spherical nut assembly, the supporting plate of the nut assembly is connected to the nut mounting member (6), the screw assembly includes a screw (7), a screw limiting shell (8) and a spring (9), one end of the screw limiting shell (8) is connected to the screw mounting member (11), and the other end is provided with a screw limiting hole (801), the screw (7) is provided with a flange limiting portion (701) provided in the screw limiting shell (8), the spring (9) is sleeved on the outside of the screw (7) between the flange limiting portion (701) and the screw mounting member (11); the screw (7) includes an inner connecting section (702) and an outer twisting section (704) connected to the inner connecting section (702), the flange limiting portion (701) is provided on the inner connecting section (702), the free end of the inner connecting section (702) is a conical structure (703), and the outer twisting section (704) is provided with a twisting structure (705); An anti-fall-out gasket (10) is also provided between the screw limiting housing (8) and the screw mounting member (11); and a limiting block A (13) is provided on the side of the nut mounting member (6) connected to the fastener.

2. The relocking device according to claim 1, characterized in that: The support plate adopts a split structure, comprising a first support plate (4) and a second support plate (5) that are butted against each other, the limiting holes comprising a first limiting hole (401) and a second limiting hole (501), the first limiting hole (401) being arranged on the first support plate (4), and the second limiting hole (501) being arranged on the second support plate (5).

3. The relocking device according to claim 2, characterized in that: The ear piece (302) is respectively arranged in the first limiting hole (401) and the second limiting hole (501) so as to be radially movable.

4. The relocking device according to claim 2 or 3, characterized in that: An alignment and locking mechanism is provided on the butting surface side of the first support plate (4) and the second support plate (5).

5. The relocking device according to claim 4, characterized in that: The alignment and locking mechanism comprises at least one protrusion and a corresponding locking groove matched with the protrusion, the protrusion is arranged on the first support plate (4) or the second support plate (5), and the locking groove is arranged on the second support plate (5) or the first support plate (4).

6. The relocking device according to claim 1, wherein: A tapered hole structure (104) is provided at the entrance of the threaded hole (103) of the supporting plate spherical nut (1), and the aperture of the through hole is equal to or larger than the aperture of the tapered hole structure (104).

7. The relocking device according to claim 2 or 3, characterized in that: The first supporting plate (4) and the second supporting plate (5) both comprise a plate body and a limiting vertical plate arranged on the outside of the plate body; the first limiting hole (401) and the second limiting hole (501) are both arranged on the corresponding limiting vertical plate, or the first limiting hole (401) and the second limiting hole (501) are both arranged between the plate body and the limiting vertical plate.

8. The relocking device according to claim 7, characterized in that: The plate body and the limiting vertical plate are an integrated structure.

9. The relocking device according to claim 1, 2 or 3, characterized in that: An external mounting hole is provided on the support plate, and the support plate is arranged on the nut mounting member (6) through the external mounting hole.

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