Closed multi-degree-of-freedom efficient locking device and assembling method thereof

Abstract

The invention discloses a closed multi-degree-of-freedom efficient locking device which comprises a base mechanism, a pressing mechanism is clamped in the base mechanism, a connecting rod mechanism is fixedly connected to the top of the pressing mechanism, the closed multi-degree-of-freedom efficient locking device further comprises a shell mechanism, and the shell mechanism is clamped to the upper portion of the base mechanism. The invention further discloses an assembly method of the closed multi-degree-of-freedom efficient locking device. According to the closed type multi-degree-of-freedom efficient locking device and the assembling method thereof, the problems that the geometrical characteristics of the outer surface of an existing connecting piece are not smooth and continuous, and the connecting rigidity and strength are insufficient are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-speed aircraft in the field of aerospace, and specifically relates to a closed multi-degree-of-freedom high-efficiency locking device, and also relates to an assembly method of the closed multi-degree-of-freedom high-efficiency locking device. Background Art

[0002] With the rapid development of my country's aviation industry, the requirements for the working performance, reliability and stability of high-speed aircraft connection devices in the aerospace field are getting higher and higher. The high-speed aircraft sealing connection device is the key to ensure that the aircraft can be quickly installed and disassembled and maintain structural stability and safety. If the connection and disassembly device cannot be reliably and stably connected, it will greatly affect the safety and reliability of the aircraft.

[0003] At present, relevant solutions have been initially developed for high-speed aircraft connection devices in the aerospace field. According to the technical information currently available, there are many connection methods for aerospace high-speed aircraft structures, such as rivet connection, metal bonding and welding. Although these connection methods can achieve the purpose of ensuring the safety and reliability of the connection structure, rivet connection has the disadvantages of lack of flexibility, non-smooth and continuous geometric features of the outer surface of the connected parts, insufficient connection stiffness and strength, low efficiency of disassembly and assembly, and increased workload of the processing steps; while metal bonding and welding still have the disadvantages of low heat resistance, low strength when subjected to uneven tearing, complex process, and difficulty in inspection. Summary of the invention

[0004] The purpose of the present invention is to provide a closed multi-degree-of-freedom high-efficiency locking device, which solves the problems that the geometric features of the outer surfaces of existing connectors are not smooth and continuous, and the connection rigidity and strength are not sufficient.

[0005] Another object of the present invention is to provide a method for assembling a closed multi-degree-of-freedom efficient locking device.

[0006] The technical solution adopted by the present invention is a closed multi-degree-of-freedom high-efficiency locking device, including a base mechanism, a pressing mechanism is clamped inside the base mechanism, a connecting rod mechanism is fixed to the top of the pressing mechanism, and also includes a shell mechanism, which is clamped to the upper part of the base mechanism.

[0007] The present invention is also characterized in that:

[0008] The base mechanism includes a lower shell body, which is hollow truncated cone-shaped, and a plurality of lower shell body sliding grooves are vertically opened on the inner wall of the lower shell body along the circumference. A lower shell body inclined surface fixing block is arranged between the plurality of lower shell body sliding grooves and the inner wall of the lower shell body. The bottom surfaces of the plurality of lower shell body inclined surface fixing blocks are flush with the plurality of lower shell body sliding grooves. The bottom surfaces of the plurality of lower shell body inclined surface fixing blocks are arranged at an angle along the circumference toward the bottom surface of the lower shell body. A lower shell body bottom surface groove is opened inside the bottom surface of the lower shell body, and a plurality of upper shell body mounting grooves are opened on the top of the lower shell body along the circumferential direction. The outer shell mechanism is clamped to the upper part of the lower shell body through the plurality of upper shell body mounting grooves, and also includes an upper spring pressing sheet and a lower spring pressing sheet arranged in the upper and lower parts. The lower spring pressing sheet is arranged in the groove of the bottom surface of the lower shell body, and a plurality of spring pressing sheet threaded holes are opened on the upper spring pressing sheet and the lower spring pressing sheet along the circumferential direction. Corresponding spring positioning columns are arranged in the plurality of spring pressing sheet threaded holes, and spring a is sleeved on the spring positioning columns corresponding to the upper spring pressing sheet and the lower spring pressing sheet.

[0009] The pressing mechanism includes a top cover, which is in the shape of a hollow step column, and a plurality of top cover top threaded holes are opened on the upper end surface of the top cover. The top cover is connected to a connecting rod mechanism by bolts in the plurality of top cover top threaded holes, a plurality of top cover protrusions are vertically provided on the side wall of the top cover along the circumference, and a self-rotating wheel slide groove is vertically opened on the bottom of the side wall of the top cover along the circumference. It also includes a self-rotating wheel, which is in the shape of a hollow step column, and the top of the self-rotating wheel is arranged in the self-rotating wheel slide groove, the bottom surface of the top step of the self-rotating wheel is flush with the bottom of the inner wall of the top cover, a plurality of top cover bottom threaded holes are vertically opened on the bottom of the inner wall of the top cover along the circumference, a limiting ring is fixedly connected to the bottom of the inner wall of the top cover and the plurality of top cover bottom threaded holes by bolts, the top surface of the limiting ring is fitted with the bottom surface of the top step of the self-rotating wheel, a plurality of self-rotating wheel protrusions are vertically fixedly connected to the outer wall of the self-rotating wheel along the circumference, and the upper end surfaces of the plurality of self-rotating wheel protrusions are all fitted with the bottom of the outer wall of the top cover.

[0010] The connecting rod mechanism includes a connecting rod structure. The connecting rod structure is fixed to the top cover by bolts, and the center of the connecting rod structure is connected to the lever by bolts. The connecting rod structure and the lever together form The two ends of the lever are equidistantly connected to connecting rods by bolts, and the two ends of the connecting rod structure are equidistantly connected to limit rods by bolts, and the other ends of the two connecting rods are respectively connected to the centers of the two limit rods by bolts.

[0011] The shell mechanism includes an upper shell, a convex strip of the upper shell is provided at the bottom along the circumferential direction, and the upper shell is clamped to the upper part of the lower shell through the convex strip of the upper shell, and also includes a movable cap, a plurality of blind holes are vertically opened on the inner wall of the movable cap along the circumference, and a through hole corresponding to the plurality of blind holes is vertically opened on the inner wall of the upper shell along the circumference, the upper shell and the movable cap are fixedly connected at the plurality of blind holes and the through holes by fixing bolts, a plurality of fixing bolts are sleeved with springs b, and a plurality of springs b are clamped to the through holes on the bottom inner wall of the upper shell, and a limiting groove for a limiting rod is provided on the inner wall of the bottom of the movable cap along the circumferential direction.

[0012] Another technical solution adopted by the present invention is a method for assembling a closed multi-degree-of-freedom high-efficiency locking device, comprising the following steps:

[0013] S1, assemble the upper spring pressing piece, the spring positioning column, the spring a and the lower spring pressing piece to form a spring pressing piece assembly, and place the spring pressing piece assembly into the lower housing to form a base mechanism; assemble the top cover, the rotating wheel and the limiting ring to form a pressing mechanism;

[0014] S2, assembling the connecting rod mechanism and connecting the pressing mechanism with the connecting rod mechanism;

[0015] S3, installing the connected pressing mechanism and connecting rod mechanism into the base mechanism;

[0016] S4. Assemble the housing mechanism to the upper part of the base mechanism, adjust the connecting rod mechanism to limit the position, and complete the assembly of the locking device.

[0017] Another technical solution of the present invention is also characterized in that:

[0018] The specific process of S1 is: install the upper spring pressure plate, the lower spring pressure plate and several spring positioning columns with several bolts, then install several springs a on the spring positioning columns between the upper spring pressure plate and the lower spring pressure plate to form a spring pressure plate assembly, and then put the spring pressure plate assembly into the groove on the bottom surface of the lower shell of the lower shell; install the self-rotating wheel upward along the axis direction of the top cover into the self-rotating wheel slide groove at the bottom of the top cover, install the limit ring upward into the top cover, and use bolts to align with the threaded holes at the bottom of the top cover, tighten the bolts to form a pressing mechanism.

[0019] The specific process of S2 is: the shift rod and the limit rod are connected to the mounting holes of the connecting rod structure with bolts, the connecting rod is connected to the mounting holes of the shift rod and the limit rod with bolts to form a connecting rod mechanism, the connecting rod mechanism is installed into the threaded hole on the top of the top cover by bolts, and the installation of the connecting rod mechanism and the pressing mechanism is completed.

[0020] The specific process of S3 is: align the self-rotating wheel protrusion of the self-rotating wheel with the lower shell slide groove of the inner wall of the lower shell, press the connected pressing mechanism and the connecting rod mechanism into the lower shell, compress the spring a in the lower shell, when the self-rotating wheel protrusion of the self-rotating wheel slides out of the lower shell slide groove, the self-rotating wheel protrusion will turn left by an angle under the elastic force of spring a and the inclined surface of the top cover, and no longer press, the self-rotating wheel protrusion slides into the stuck position of the inclined surface fixing block of the lower shell under the action of the elastic force of spring a and the inclined surface supporting force of the top cover, the pressing mechanism, the connecting rod mechanism and the lower shell form a reliable mechanical connection in the axial direction, and the top cover protrusion on the top cover will be pressed into the lower shell slide groove of the inner wall of the lower shell at the same time, so as to realize the circumferential reliable mechanical connection between the pressing mechanism, the connecting rod mechanism and the lower shell, and the connecting rod in the connecting rod structure is pushed clockwise from top to bottom to align with the threaded hole on the top of the top cover.

[0021] The specific process of S4 is: install the movable cap downward along the axis direction of the upper shell body so that the blind hole at the bottom of the movable cap is aligned with the through hole at the top of the upper shell body, insert the spring b into the lower end of the fixing bolt from the bottom, and then fix the movable cap and the upper shell body with the fixing bolt with the spring b from the bottom to the top, install the movable cap and the upper shell body downward, connect the movable cap, the upper shell body and the lower shell body through the convex strip of the upper shell body and the mounting groove of the upper shell body, apply a force to the movable cap and the upper shell body to form a gap between the upper shell body and the movable cap, push the limit rod in the connecting rod mechanism counterclockwise through the gap to get it into the limit groove of the limit rod, remove the force applied between the movable cap and the upper shell body, and complete the assembly of the locking device.

[0022] The beneficial effects of the present invention are:

[0023] The closed multi-degree-of-freedom high-efficiency locking device and its assembly method provided by the present invention not only ensure that the outer surface of the connected parts has the continuity of geometric features, but also provide locking limit conditions for the lever of the connecting rod mechanism, and finally realize the locking and unlocking functions of the lower shell and the pressing mechanism; solve the problems of non-smooth and continuous geometric features of the outer surface of the existing connecting parts, insufficient connection stiffness and strength, low disassembly and assembly efficiency, large processing workload, low heat resistance, etc., and also have the characteristics of strong airtightness of the external structure, high disassembly and assembly efficiency, convenient later maintenance and strong adaptability; the device adopts a purely mechanical structure design, avoids the influence of factors such as electromagnetic interference on the connection reliability, and improves the connection accuracy; in addition, the device can realize reliable connection of the connected parts in multiple degrees of freedom such as axial compression, circumferential torsion, bending, shear, etc., and realizes fast and efficient locking in a short time through a unique pressing and self-locking mechanism design, which is of great significance to the development of products in the fields of aviation, aerospace, machinery, water conservancy and hydropower, vehicles, ships, etc., and improves the reliability, safety and versatility of the products. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a structural schematic diagram of the closed multi-degree-of-freedom high-efficiency locking device of the present invention;

[0025] Figure 2 It is a schematic diagram of the base mechanism structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the pressing mechanism of the present invention;

[0027] Figure 4 It is a schematic diagram of the connecting rod mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the shell mechanism of the present invention.

[0029] In the figure, 1. base mechanism, 2. pressing mechanism, 3. shell mechanism, 4. connecting rod mechanism, 5. lower shell, 6. upper spring pressure plate, 7. spring positioning column, 8. spring a, 9. lower spring pressure plate, 10. top cover, 11. self-rotating wheel, 12. limiting ring, 13. connecting rod structure, 14. lever, 15. connecting rod, 16. limiting rod, 17. movable cap, 18. spring b, 19. upper shell, 20. lower shell slide groove, 21. lower shell inclined surface fixing block, 22. lower shell bottom groove, 23. upper shell mounting groove, 24. spring pressure plate threaded hole, 25. top cover top threaded hole, 26. top cover protrusion, 27. self-rotating wheel slide groove, 28. top cover bottom threaded hole, 29. self-rotating wheel protrusion, 30. upper shell protrusion, 31. fixing bolt, 32. limiting groove of limiting rod. DETAILED DESCRIPTION

[0030] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] The closed multi-degree-of-freedom high-efficiency locking device provided by the present invention is as follows: Figure 1 As shown, it includes a base mechanism 1, a pressing mechanism 2 is clamped inside the base mechanism 1, a connecting rod mechanism 4 is fixed to the top of the pressing mechanism 2, and a shell mechanism 3 is clamped on the upper part of the base mechanism 1. Figure 2As shown, the base mechanism 1 includes a lower shell 5, which is in the shape of a hollow truncated cone. A plurality of lower shell slide grooves 20 are vertically opened on the inner wall of the lower shell 5 along the circumference. A lower shell inclined surface fixing block 21 is arranged between the plurality of lower shell slide grooves 20 and on the inner wall of the lower shell 5, which plays a firm limiting role for the parts enclosed inside the lower shell 5. The bottom surfaces of the plurality of lower shell inclined surface fixing blocks 21 are flush with the plurality of lower shell slide grooves 20. The bottom surfaces of the plurality of lower shell inclined surface fixing blocks 21 are arranged at an angle along the circumference toward the bottom surface of the lower shell 5, so that the pressing mechanism 2 can be inserted into the lower shell slide groove 20 through the lower shell slide groove 20. The bottom surface of the lower shell 5 is opened inside There is a groove 22 on the bottom surface of the lower shell, and a plurality of upper shell mounting grooves 23 are opened on the top of the lower shell 5 along the circumferential direction. The shell mechanism 3 is clamped on the upper part of the lower shell 5 through the plurality of upper shell mounting grooves 23. It also includes an upper spring pressing plate 6 and a lower spring pressing plate 9 arranged up and down. The lower spring pressing plate 9 is arranged in the groove 22 on the bottom surface of the lower shell. A plurality of spring pressing plate threaded holes 24 are opened on the upper spring pressing plate 6 and the lower spring pressing plate 9 along the circumferential direction. Corresponding spring positioning columns 7 are arranged in the plurality of spring pressing plate threaded holes 24. The spring positioning columns 7 corresponding to the upper spring pressing plate 6 and the lower spring pressing plate 9 are sleeved with springs a8. Figure 3 As shown, the pressing mechanism 2 includes a top cover 10, which is in the shape of a hollow step column, and a plurality of top cover threaded holes 25 are provided on the upper end surface of the top cover 10. The top cover 10 is connected to the connecting rod mechanism 4 through bolts in the plurality of top cover threaded holes 25. A plurality of top cover protrusions 26 are provided vertically along the circumference of the side wall of the top cover 10, and a self-rotating wheel groove 27 is provided vertically along the circumference of the bottom of the side wall of the top cover 10. The pressing mechanism 2 also includes a self-rotating wheel 11, which is in the shape of a hollow step column, and the top of the self-rotating wheel 11 is arranged in the self-rotating wheel groove 27, and the self-rotating wheel 11 and the top cover 10 has a relative rotational freedom, the bottom surface of the top step of the self-rotating wheel 11 is flush with the bottom of the inner wall of the top cover 10, and a plurality of top cover bottom threaded holes 28 are vertically opened along the circumference of the bottom of the inner wall of the top cover 10. The bottom of the inner wall of the top cover 10 and the plurality of top cover bottom threaded holes 28 are fixedly connected by bolts to the limiting ring 12, and the top surface of the limiting ring 12 fits with the bottom surface of the top step of the self-rotating wheel 11. The outer wall of the self-rotating wheel 11 is vertically fixed with a plurality of self-rotating wheel protrusions 29, and the upper end surfaces of the plurality of self-rotating wheel protrusions 29 fit with the bottom of the outer wall of the top cover 10. Figure 4 As shown, the connecting rod mechanism 4 includes a connecting rod structure 13, and the connecting rod structure 13 is The connecting rod structure 13 is fixed to the top cover 10 by bolts, and the center of the connecting rod structure 13 is connected to the lever 14 by bolts, and the connecting rod structure 13 and the lever 14 together form The two ends of the lever 14 are connected to the connecting rod 15 by bolts at equal distances, and the two ends of the connecting rod structure 13 are connected to the limit rod 16 by bolts at equal distances, and the other ends of the two connecting rods 15 are connected to the centers of the two limit rods 16 by bolts one by one. Figure 5As shown, the shell mechanism 3 includes an upper shell 19, and an upper shell convex strip 30 is provided at the bottom of the upper shell 19 along the circumferential direction. The upper shell 19 is clamped on the upper part of the lower shell 5 through the upper shell convex strip 30, and also includes a movable cap 17. The inner wall of the movable cap 17 is vertically provided with a plurality of blind holes along the circumference, and the inner wall of the upper shell 19 is vertically provided with through holes corresponding to the plurality of blind holes along the circumference. The upper shell 19 and the movable cap 17 are fixedly connected at the plurality of blind holes and through holes by fixing bolts 31, and the plurality of fixing bolts 31 are sleeved with springs b18, and the plurality of springs b18 are clamped at the through holes on the bottom inner wall of the upper shell 19, and a limiting rod limiting groove 32 is provided on the bottom inner wall of the movable cap 17 along the circumferential direction.

[0032] When disassembling the closed multi-degree-of-freedom high-efficiency locking device provided by the present invention, first use a pulling force to pull the movable cap 17 to leave a small gap between the movable cap 17 and the upper shell 19, then move the limit rod 16 in the connecting rod mechanism 4 clockwise to disengage the limit rod 16 from the limit rod limit groove 32, then remove the shell mechanism 3, press the pressing mechanism 2 downward, and finally take out the pressing mechanism 2 to complete the disassembly.

[0033] The closed multi-degree-of-freedom high-efficiency locking device provided by the present invention can not only ensure the strength of the material, but also ensure the smoothness and continuity of the outer surface, ensure the stability and safety of the structure, and is simple to operate during assembly, simplifying the assembly process. The structural design process of the device fully considers the stability and reliability of the locking connection, and can achieve axial and circumferential fixation of the connected parts. The use of combined principles such as rotary interlocking design and spring tensioning allows the connected parts to operate normally under complex working conditions: the rotary interlocking design provides precise positioning and reliable connection for the connected parts; the spring tensioning principle gives the structure a certain elastic buffering and automatic reset function; the two cooperate with each other to ensure that the locking device can still maintain stable connection performance when subjected to complex working conditions such as various external loads, vibrations and temperature changes, providing a guarantee for the reliable operation of mechanical equipment.

[0034] Example 1

[0035] The closed multi-degree-of-freedom high-efficiency locking device proposed in this embodiment is as follows: Figure 1 As shown, it includes a base mechanism 1, a pressing mechanism 2 is clamped inside the base mechanism 1, a connecting rod mechanism 4 is fixedly connected to the top of the pressing mechanism 2, and also includes a shell mechanism 3, which is clamped on the upper part of the base mechanism 1.

[0036] Example 2

[0037] The closed multi-degree-of-freedom high-efficiency locking device proposed in this embodiment is as follows: Figure 1As shown, it includes a base mechanism 1, a pressing mechanism 2 is clamped inside the base mechanism 1, a connecting rod mechanism 4 is fixedly connected to the top of the pressing mechanism 2, and also includes a shell mechanism 3, which is clamped on the upper part of the base mechanism 1.

[0038] like Figure 2 As shown, the base mechanism 1 includes a lower shell 5, which is in the shape of a hollow truncated cone. A plurality of lower shell slide grooves 20 are vertically provided on the inner wall of the lower shell 5 along the circumference. A lower shell inclined surface fixing block 21 is provided between the plurality of lower shell slide grooves 20 and on the inner wall of the lower shell 5. The bottom surfaces of the plurality of lower shell inclined surface fixing blocks 21 are flush with the plurality of lower shell slide grooves 20. The bottom surfaces of the plurality of lower shell inclined surface fixing blocks 21 are provided with an angle along the circumference toward the bottom surface of the lower shell 5. A lower shell bottom surface groove 22 is provided inside the bottom surface of the lower shell 5. The top of the lower shell 5 is provided with a plurality of lower shell inclined surface fixing blocks 21 along the circumferential direction. There are several upper shell mounting grooves 23, and the shell mechanism 3 is clamped on the upper part of the lower shell 5 through the several upper shell mounting grooves 23. It also includes an upper spring pressing plate 6 and a lower spring pressing plate 9 arranged in an upper and lower manner. The lower spring pressing plate 9 is arranged in the groove 22 on the bottom surface of the lower shell. Several spring pressing plate threaded holes 24 are opened on the upper spring pressing plate 6 and the lower spring pressing plate 9 along the circumferential direction. Corresponding spring positioning columns 7 are arranged in the several spring pressing plate threaded holes 24, and springs a8 are sleeved on the spring positioning columns 7 corresponding to the upper spring pressing plate 6 and the lower spring pressing plate 9.

[0039] Example 3

[0040] The closed multi-degree-of-freedom high-efficiency locking device proposed in this embodiment is as follows: Figure 1 As shown, it includes a base mechanism 1, a pressing mechanism 2 is clamped inside the base mechanism 1, a connecting rod mechanism 4 is fixedly connected to the top of the pressing mechanism 2, and also includes a shell mechanism 3, which is clamped on the upper part of the base mechanism 1.

[0041] like Figure 2As shown, the base mechanism 1 includes a lower shell 5, which is in the shape of a hollow truncated cone. A plurality of lower shell slide grooves 20 are vertically provided on the inner wall of the lower shell 5 along the circumference. A lower shell inclined surface fixing block 21 is provided between the plurality of lower shell slide grooves 20 and on the inner wall of the lower shell 5. The bottom surfaces of the plurality of lower shell inclined surface fixing blocks 21 are flush with the plurality of lower shell slide grooves 20. The bottom surfaces of the plurality of lower shell inclined surface fixing blocks 21 are provided with an angle along the circumference toward the bottom surface of the lower shell 5. A lower shell bottom surface groove 22 is provided inside the bottom surface of the lower shell 5. The top of the lower shell 5 is provided with a plurality of lower shell inclined surface fixing blocks 21 along the circumferential direction. There are several upper shell mounting grooves 23, and the shell mechanism 3 is clamped on the upper part of the lower shell 5 through the several upper shell mounting grooves 23. It also includes an upper spring pressing plate 6 and a lower spring pressing plate 9 arranged in an upper and lower manner. The lower spring pressing plate 9 is arranged in the groove 22 on the bottom surface of the lower shell. Several spring pressing plate threaded holes 24 are opened on the upper spring pressing plate 6 and the lower spring pressing plate 9 along the circumferential direction. Corresponding spring positioning columns 7 are arranged in the several spring pressing plate threaded holes 24, and springs a8 are sleeved on the spring positioning columns 7 corresponding to the upper spring pressing plate 6 and the lower spring pressing plate 9.

[0042] like Figure 3 As shown, the pressing mechanism 2 includes a top cover 10, which is in the shape of a hollow step column, and a plurality of top cover threaded holes 25 are provided on the upper end surface of the top cover 10. The top cover 10 is connected to the connecting rod mechanism 4 through bolts in the plurality of top cover threaded holes 25. A plurality of top cover protrusions 26 are provided vertically along the circumference of the side wall of the top cover 10, and a self-rotating wheel slide groove 27 is provided vertically along the circumference of the bottom of the side wall of the top cover 10. The pressing mechanism 2 also includes a self-rotating wheel 11, which is in the shape of a hollow step column, and the top of the self-rotating wheel 11 is provided in the self-rotating wheel slide groove 27. Inside, the bottom surface of the top step of the rotating wheel 11 is flush with the bottom of the inner wall of the top cover 10, and a plurality of top cover bottom threaded holes 28 are vertically opened at the bottom of the inner wall of the top cover 10 along the circumference. The bottom of the inner wall of the top cover 10 and the plurality of top cover bottom threaded holes 28 are fixedly connected with the limiting ring 12 by bolts, and the top surface of the limiting ring 12 is fitted with the bottom surface of the top step of the rotating wheel 11, and a plurality of rotating wheel protrusions 29 are vertically fixedly connected to the outer wall of the rotating wheel 11 along the circumference, and the upper end surfaces of the plurality of rotating wheel protrusions 29 are all fitted with the bottom of the outer wall of the top cover 10.

[0043] Example 4

[0044] The closed multi-degree-of-freedom high-efficiency locking device proposed in this embodiment is as follows: Figure 1 As shown, it includes a base mechanism 1, a pressing mechanism 2 is clamped inside the base mechanism 1, a connecting rod mechanism 4 is fixedly connected to the top of the pressing mechanism 2, and also includes a shell mechanism 3, which is clamped on the upper part of the base mechanism 1.

[0045] like Figure 2As shown, the base mechanism 1 includes a lower shell 5, which is in the shape of a hollow truncated cone. A plurality of lower shell slide grooves 20 are vertically provided on the inner wall of the lower shell 5 along the circumference. A lower shell inclined surface fixing block 21 is provided between the plurality of lower shell slide grooves 20 and on the inner wall of the lower shell 5. The bottom surfaces of the plurality of lower shell inclined surface fixing blocks 21 are flush with the plurality of lower shell slide grooves 20. The bottom surfaces of the plurality of lower shell inclined surface fixing blocks 21 are provided with an angle along the circumference toward the bottom surface of the lower shell 5. A lower shell bottom surface groove 22 is provided inside the bottom surface of the lower shell 5. The top of the lower shell 5 is provided with a plurality of lower shell inclined surface fixing blocks 21 along the circumferential direction. There are several upper shell mounting grooves 23, and the shell mechanism 3 is clamped on the upper part of the lower shell 5 through the several upper shell mounting grooves 23. It also includes an upper spring pressing plate 6 and a lower spring pressing plate 9 arranged in an upper and lower manner. The lower spring pressing plate 9 is arranged in the groove 22 on the bottom surface of the lower shell. Several spring pressing plate threaded holes 24 are opened on the upper spring pressing plate 6 and the lower spring pressing plate 9 along the circumferential direction. Corresponding spring positioning columns 7 are arranged in the several spring pressing plate threaded holes 24, and springs a8 are sleeved on the spring positioning columns 7 corresponding to the upper spring pressing plate 6 and the lower spring pressing plate 9.

[0046] like Figure 3 As shown, the pressing mechanism 2 includes a top cover 10, which is in the shape of a hollow step column, and a plurality of top cover threaded holes 25 are provided on the upper end surface of the top cover 10. The top cover 10 is connected to the connecting rod mechanism 4 through bolts in the plurality of top cover threaded holes 25. A plurality of top cover protrusions 26 are provided vertically along the circumference of the side wall of the top cover 10, and a self-rotating wheel slide groove 27 is provided vertically along the circumference of the bottom of the side wall of the top cover 10. The pressing mechanism 2 also includes a self-rotating wheel 11, which is in the shape of a hollow step column, and the top of the self-rotating wheel 11 is provided in the self-rotating wheel slide groove 27. Inside, the bottom surface of the top step of the rotating wheel 11 is flush with the bottom of the inner wall of the top cover 10, and a plurality of top cover bottom threaded holes 28 are vertically opened at the bottom of the inner wall of the top cover 10 along the circumference. The bottom of the inner wall of the top cover 10 and the plurality of top cover bottom threaded holes 28 are fixedly connected with the limiting ring 12 by bolts, and the top surface of the limiting ring 12 is fitted with the bottom surface of the top step of the rotating wheel 11, and a plurality of rotating wheel protrusions 29 are vertically fixedly connected to the outer wall of the rotating wheel 11 along the circumference, and the upper end surfaces of the plurality of rotating wheel protrusions 29 are all fitted with the bottom of the outer wall of the top cover 10.

[0047] like Figure 4 As shown, the connecting rod mechanism 4 includes a connecting rod structure 13, and the connecting rod structure 13 is The connecting rod structure 13 is fixed to the top cover 10 by bolts, and the center of the connecting rod structure 13 is connected to the lever 14 by bolts, and the connecting rod structure 13 and the lever 14 together form The two ends of the lever 14 are equidistantly connected to the connecting rod 15 by bolts, and the two ends of the connecting rod structure 13 are equidistantly connected to the limit rod 16 by bolts, and the other ends of the two connecting rods 15 are respectively connected to the centers of the two limit rods 16 by bolts.

[0048] Example 5

[0049] The closed multi-degree-of-freedom high-efficiency locking device proposed in this embodiment is as follows: Figure 1 As shown, it includes a base mechanism 1, a pressing mechanism 2 is clamped inside the base mechanism 1, a connecting rod mechanism 4 is fixedly connected to the top of the pressing mechanism 2, and also includes a shell mechanism 3, which is clamped on the upper part of the base mechanism 1.

[0050] like Figure 2 As shown, the base mechanism 1 includes a lower shell 5, which is in the shape of a hollow truncated cone. A plurality of lower shell slide grooves 20 are vertically provided on the inner wall of the lower shell 5 along the circumference. A lower shell inclined surface fixing block 21 is provided between the plurality of lower shell slide grooves 20 and on the inner wall of the lower shell 5. The bottom surfaces of the plurality of lower shell inclined surface fixing blocks 21 are flush with the plurality of lower shell slide grooves 20. The bottom surfaces of the plurality of lower shell inclined surface fixing blocks 21 are provided with an angle along the circumference toward the bottom surface of the lower shell 5. A lower shell bottom surface groove 22 is provided inside the bottom surface of the lower shell 5. The top of the lower shell 5 is provided with a plurality of lower shell inclined surface fixing blocks 21 along the circumferential direction. There are several upper shell mounting grooves 23, and the shell mechanism 3 is clamped on the upper part of the lower shell 5 through the several upper shell mounting grooves 23. It also includes an upper spring pressing plate 6 and a lower spring pressing plate 9 arranged in an upper and lower manner. The lower spring pressing plate 9 is arranged in the groove 22 on the bottom surface of the lower shell. Several spring pressing plate threaded holes 24 are opened on the upper spring pressing plate 6 and the lower spring pressing plate 9 along the circumferential direction. Corresponding spring positioning columns 7 are arranged in the several spring pressing plate threaded holes 24, and springs a8 are sleeved on the spring positioning columns 7 corresponding to the upper spring pressing plate 6 and the lower spring pressing plate 9.

[0051] like Figure 3 As shown, the pressing mechanism 2 includes a top cover 10, which is in the shape of a hollow step column, and a plurality of top cover threaded holes 25 are provided on the upper end surface of the top cover 10. The top cover 10 is connected to the connecting rod mechanism 4 through bolts in the plurality of top cover threaded holes 25. A plurality of top cover protrusions 26 are provided vertically along the circumference of the side wall of the top cover 10, and a self-rotating wheel slide groove 27 is provided vertically along the circumference of the bottom of the side wall of the top cover 10. The pressing mechanism 2 also includes a self-rotating wheel 11, which is in the shape of a hollow step column, and the top of the self-rotating wheel 11 is provided in the self-rotating wheel slide groove 27. Inside, the bottom surface of the top step of the rotating wheel 11 is flush with the bottom of the inner wall of the top cover 10, and a plurality of top cover bottom threaded holes 28 are vertically opened at the bottom of the inner wall of the top cover 10 along the circumference. The bottom of the inner wall of the top cover 10 and the plurality of top cover bottom threaded holes 28 are fixedly connected with the limiting ring 12 by bolts, and the top surface of the limiting ring 12 is fitted with the bottom surface of the top step of the rotating wheel 11, and a plurality of rotating wheel protrusions 29 are vertically fixedly connected to the outer wall of the rotating wheel 11 along the circumference, and the upper end surfaces of the plurality of rotating wheel protrusions 29 are all fitted with the bottom of the outer wall of the top cover 10.

[0052] like Figure 4 As shown, the connecting rod mechanism 4 includes a connecting rod structure 13, and the connecting rod structure 13 is The connecting rod structure 13 is fixed to the top cover 10 by bolts, and the center of the connecting rod structure 13 is connected to the lever 14 by bolts, and the connecting rod structure 13 and the lever 14 together form The two ends of the lever 14 are equidistantly connected to the connecting rod 15 by bolts, and the two ends of the connecting rod structure 13 are equidistantly connected to the limit rod 16 by bolts, and the other ends of the two connecting rods 15 are respectively connected to the centers of the two limit rods 16 by bolts.

[0053] like Figure 5 As shown, the shell mechanism 3 includes an upper shell 19, and an upper shell convex strip 30 is provided at the bottom of the upper shell 19 along the circumferential direction. The upper shell 19 is clamped on the upper part of the lower shell 5 through the upper shell convex strip 30, and also includes a movable cap 17. The inner wall of the movable cap 17 is vertically provided with a plurality of blind holes along the circumference, and the inner wall of the upper shell 19 is vertically provided with through holes corresponding to the plurality of blind holes along the circumference. The upper shell 19 and the movable cap 17 are fixedly connected at the plurality of blind holes and through holes by fixing bolts 31, and the plurality of fixing bolts 31 are sleeved with springs b18, and the plurality of springs b18 are clamped at the through holes on the bottom inner wall of the upper shell 19, and a limiting rod limiting groove 32 is provided on the bottom inner wall of the movable cap 17 along the circumferential direction.

[0054] Example 6

[0055] The assembly method of the closed multi-degree-of-freedom efficient locking device proposed in this embodiment includes the following steps:

[0056] S1, assemble the upper spring pressing piece, the spring positioning column, the spring a and the lower spring pressing piece to form a spring pressing piece assembly, and place the spring pressing piece assembly into the lower housing to form a base mechanism; assemble the top cover, the rotating wheel and the limiting ring to form a pressing mechanism;

[0057] S2, assembling the connecting rod mechanism and connecting the pressing mechanism with the connecting rod mechanism;

[0058] S3, installing the connected pressing mechanism and connecting rod mechanism into the base mechanism;

[0059] S4. Assemble the housing mechanism to the upper part of the base mechanism, adjust the connecting rod mechanism to limit the position, and complete the assembly of the locking device.

[0060] Example 7

[0061] The assembly method of the closed multi-degree-of-freedom efficient locking device proposed in this embodiment includes the following steps:

[0062] S1, assemble the upper spring pressing piece, the spring positioning column, the spring a and the lower spring pressing piece to form a spring pressing piece assembly, and place the spring pressing piece assembly into the lower housing to form a base mechanism; assemble the top cover, the rotating wheel and the limiting ring to form a pressing mechanism;

[0063] The specific process is as follows: the upper spring pressing piece and the lower spring pressing piece and a plurality of spring positioning columns are installed with a plurality of bolts, and then a plurality of springs a are installed on the spring positioning columns between the upper spring pressing piece and the lower spring pressing piece to form a spring pressing piece assembly, and then the spring pressing piece assembly is placed into the groove on the bottom surface of the lower shell of the lower shell; the self-rotating wheel is installed upwardly along the axis direction of the top cover into the self-rotating wheel slide groove at the lower part of the top cover, the limiting ring is installed upwardly into the top cover, and bolts are used to align and install with the threaded holes at the bottom of the top cover, and the bolts are tightened to form a pressing mechanism;

[0064] S2, assembling the connecting rod mechanism and connecting the pressing mechanism with the connecting rod mechanism;

[0065] S3, installing the connected pressing mechanism and connecting rod mechanism into the base mechanism;

[0066] S4. Assemble the housing mechanism to the upper part of the base mechanism, adjust the connecting rod mechanism to limit the position, and complete the assembly of the locking device.

[0067] Example 8

[0068] The assembly method of the closed multi-degree-of-freedom efficient locking device proposed in this embodiment includes the following steps:

[0069] S1, assemble the upper spring pressing piece, the spring positioning column, the spring a and the lower spring pressing piece to form a spring pressing piece assembly, and place the spring pressing piece assembly into the lower housing to form a base mechanism; assemble the top cover, the rotating wheel and the limiting ring to form a pressing mechanism;

[0070] The specific process is as follows: the upper spring pressing piece and the lower spring pressing piece and a plurality of spring positioning columns are installed with a plurality of bolts, and then a plurality of springs a are installed on the spring positioning columns between the upper spring pressing piece and the lower spring pressing piece to form a spring pressing piece assembly, and then the spring pressing piece assembly is placed into the groove on the bottom surface of the lower shell of the lower shell; the self-rotating wheel is installed upwardly along the axis direction of the top cover into the self-rotating wheel slide groove at the lower part of the top cover, the limiting ring is installed upwardly into the top cover, and bolts are used to align and install with the threaded holes at the bottom of the top cover, and the bolts are tightened to form a pressing mechanism;

[0071] S2, assembling the connecting rod mechanism and connecting the pressing mechanism with the connecting rod mechanism;

[0072] The specific process is as follows: the shifting rod and the limiting rod are connected to the mounting holes of the connecting rod structure with bolts, the connecting rod is connected to the mounting holes of the shifting rod and the limiting rod with bolts to form a connecting rod mechanism, the connecting rod mechanism is installed into the threaded hole at the top of the top cover with bolts, and the connecting rod mechanism and the pressing mechanism are installed;

[0073] S3, installing the connected pressing mechanism and connecting rod mechanism into the base mechanism;

[0074] S4. Assemble the housing mechanism to the upper part of the base mechanism, adjust the connecting rod mechanism to limit the position, and complete the assembly of the locking device.

[0075] Example 9

[0076] The assembly method of the closed multi-degree-of-freedom efficient locking device proposed in this embodiment includes the following steps:

[0077] S1, assemble the upper spring pressing piece, the spring positioning column, the spring a and the lower spring pressing piece to form a spring pressing piece assembly, and place the spring pressing piece assembly into the lower housing to form a base mechanism; assemble the top cover, the rotating wheel and the limiting ring to form a pressing mechanism;

[0078] The specific process is as follows: the upper spring pressing piece and the lower spring pressing piece and a plurality of spring positioning columns are installed with a plurality of bolts, and then a plurality of springs a are installed on the spring positioning columns between the upper spring pressing piece and the lower spring pressing piece to form a spring pressing piece assembly, and then the spring pressing piece assembly is placed into the groove on the bottom surface of the lower shell of the lower shell; the self-rotating wheel is installed upwardly along the axis direction of the top cover into the self-rotating wheel slide groove at the lower part of the top cover, the limiting ring is installed upwardly into the top cover, and bolts are used to align and install with the threaded holes at the bottom of the top cover, and the bolts are tightened to form a pressing mechanism;

[0079] S2, assembling the connecting rod mechanism and connecting the pressing mechanism with the connecting rod mechanism;

[0080] The specific process is as follows: the shifting rod and the limiting rod are connected to the mounting holes of the connecting rod structure with bolts, the connecting rod is connected to the mounting holes of the shifting rod and the limiting rod with bolts to form a connecting rod mechanism, the connecting rod mechanism is installed into the threaded hole at the top of the top cover with bolts, and the connecting rod mechanism and the pressing mechanism are installed;

[0081] S3, installing the connected pressing mechanism and connecting rod mechanism into the base mechanism;

[0082] The specific process is: align the self-rotating wheel protrusion of the self-rotating wheel with the lower shell slide groove of the inner wall of the lower shell, press the connected pressing mechanism and the connecting rod mechanism into the lower shell, compress the spring a in the lower shell, and when the self-rotating wheel protrusion of the self-rotating wheel slides out of the lower shell slide groove, the self-rotating wheel protrusion will turn left by an angle under the elastic force of spring a and the inclined surface of the top cover, and no longer press, and the self-rotating wheel protrusion slides into the stuck position of the inclined surface fixing block of the lower shell under the elastic force of spring a and the inclined surface supporting force of the top cover, and the pressing mechanism, the connecting rod mechanism and the lower shell form a reliable mechanical connection in the axial direction, and at the same time, the top cover protrusion on the top cover will be pressed into the lower shell slide groove of the inner wall of the lower shell at the same time, so as to realize the circumferential reliable mechanical connection between the pressing mechanism, the connecting rod mechanism and the lower shell, and the connecting rod in the connecting rod structure is pushed clockwise from top to bottom to align with the threaded hole at the top of the top cover;

[0083] S4. Assemble the housing mechanism to the upper part of the base mechanism, adjust the connecting rod mechanism to limit the position, and complete the assembly of the locking device.

[0084] Example 10

[0085] The assembly method of the closed multi-degree-of-freedom efficient locking device proposed in this embodiment includes the following steps:

[0086] S1, assemble the upper spring pressing piece, the spring positioning column, the spring a and the lower spring pressing piece to form a spring pressing piece assembly, and place the spring pressing piece assembly into the lower housing to form a base mechanism; assemble the top cover, the rotating wheel and the limiting ring to form a pressing mechanism;

[0087] The specific process is as follows: the upper spring pressing piece and the lower spring pressing piece and a plurality of spring positioning columns are installed with a plurality of bolts, and then a plurality of springs a are installed on the spring positioning columns between the upper spring pressing piece and the lower spring pressing piece to form a spring pressing piece assembly, and then the spring pressing piece assembly is placed into the groove on the bottom surface of the lower shell of the lower shell; the self-rotating wheel is installed upwardly along the axis direction of the top cover into the self-rotating wheel slide groove at the lower part of the top cover, the limiting ring is installed upwardly into the top cover, and bolts are used to align and install with the threaded holes at the bottom of the top cover, and the bolts are tightened to form a pressing mechanism;

[0088] S2, assembling the connecting rod mechanism and connecting the pressing mechanism with the connecting rod mechanism;

[0089] The specific process is as follows: the shifting rod and the limiting rod are connected to the mounting holes of the connecting rod structure with bolts, the connecting rod is connected to the mounting holes of the shifting rod and the limiting rod with bolts to form a connecting rod mechanism, the connecting rod mechanism is installed into the threaded hole at the top of the top cover with bolts, and the connecting rod mechanism and the pressing mechanism are installed;

[0090] S3, installing the connected pressing mechanism and connecting rod mechanism into the base mechanism;

[0091] The specific process is: align the self-rotating wheel protrusion of the self-rotating wheel with the lower shell slide groove of the inner wall of the lower shell, press the connected pressing mechanism and the connecting rod mechanism into the lower shell, compress the spring a in the lower shell, and when the self-rotating wheel protrusion of the self-rotating wheel slides out of the lower shell slide groove, the self-rotating wheel protrusion will turn left by an angle under the elastic force of spring a and the inclined surface of the top cover, and no longer press, and the self-rotating wheel protrusion slides into the stuck position of the inclined surface fixing block of the lower shell under the elastic force of spring a and the inclined surface supporting force of the top cover, and the pressing mechanism, the connecting rod mechanism and the lower shell form a reliable mechanical connection in the axial direction, and at the same time, the top cover protrusion on the top cover will be pressed into the lower shell slide groove of the inner wall of the lower shell at the same time, so as to realize the circumferential reliable mechanical connection between the pressing mechanism, the connecting rod mechanism and the lower shell, and the connecting rod in the connecting rod structure is pushed clockwise from top to bottom to align with the threaded hole at the top of the top cover;

[0092] S4. Assemble the housing mechanism to the upper part of the base mechanism, adjust the connecting rod mechanism to limit the position, and complete the assembly of the locking device;

[0093] The specific process is: install the movable cap downward along the axis direction of the upper shell body so that the blind hole at the bottom of the movable cap is aligned with the through hole at the top of the upper shell body, insert the spring b into the lower end of the fixing bolt from the bottom, and then fix the movable cap and the upper shell body with the fixing bolt with the spring b from the bottom to the top, install the movable cap and the upper shell body downward, connect the movable cap, the upper shell body and the lower shell body through the convex strip of the upper shell body and the mounting groove of the upper shell body, apply a force to the movable cap and the upper shell body to form a gap between the upper shell body and the movable cap, push the limit rod in the connecting rod mechanism counterclockwise through the gap to get it into the limit groove of the limit rod, remove the force applied between the movable cap and the upper shell body, and complete the assembly of the locking device.

Claims

1. Closed multi-degree-of-freedom high-efficiency locking device, characterized in that: The invention comprises a base mechanism (1), wherein a pressing mechanism (2) is clamped inside the base mechanism (1), a connecting rod mechanism (4) is fixedly connected to the top of the pressing mechanism (2), and also comprises a shell mechanism (3), wherein the shell mechanism (3) is clamped to the upper part of the base mechanism (1).

2. The closed multi-degree-of-freedom high-efficiency locking device according to claim 1, characterized in that: The base mechanism (1) comprises a lower shell (5), the lower shell (5) is in the shape of a hollow truncated cone, the inner wall of the lower shell (5) is provided with a plurality of lower shell slide grooves (20) vertically along the circumference, a lower shell inclined surface fixing block (21) is provided between the plurality of lower shell slide grooves (20) and on the inner wall of the lower shell (5), the bottom surfaces of the plurality of lower shell inclined surface fixing blocks (21) are flush with the plurality of lower shell slide grooves (20), the bottom surfaces of the plurality of lower shell inclined surface fixing blocks (21) are provided with an angle along the circumference toward the bottom surface of the lower shell (5), a lower shell bottom surface groove (22) is provided inside the bottom surface of the lower shell (5), and a plurality of lower shell inclined surface fixing blocks (21) are provided on the top of the lower shell (5) along the circumferential direction. The outer shell mechanism (3) is clamped to the upper part of the lower shell (5) through several upper shell mounting grooves (23), and also includes an upper spring pressing plate (6) and a lower spring pressing plate (9) arranged in an upper and lower manner, and the lower spring pressing plate (9) is arranged in the groove (22) on the bottom surface of the lower shell, and the upper spring pressing plate (6) and the lower spring pressing plate (9) are each provided with a plurality of spring pressing plate threaded holes (24) along the circumferential direction, and corresponding spring positioning columns (7) are each provided in the plurality of spring pressing plate threaded holes (24), and springs a (8) are each sleeved on the corresponding spring positioning columns (7) of the upper spring pressing plate (6) and the lower spring pressing plate (9).

3. The closed multi-degree-of-freedom high-efficiency locking device according to claim 2, characterized in that: The pressing mechanism (2) comprises a top cover (10), the top cover (10) is in the shape of a hollow step column, a plurality of top cover threaded holes (25) are provided on the upper end surface of the top cover (10), the top cover (10) is connected to the connecting rod mechanism (4) through bolts in the plurality of top cover threaded holes (25), a plurality of top cover protrusions (26) are provided on the side wall of the top cover (10) vertically along the circumference, a self-rotating wheel groove (27) is provided on the bottom of the side wall of the top cover (10) vertically along the circumference, and the self-rotating wheel (11) is also included, the self-rotating wheel (11) is in the shape of a hollow step column, the top of the self-rotating wheel (11) is arranged in the self-rotating wheel groove (27) 7), the bottom surface of the top step of the self-rotating wheel (11) is flush with the bottom of the inner wall of the top cover (10), and the bottom of the inner wall of the top cover (10) is vertically provided with a plurality of top cover bottom threaded holes (28) along the circumference. The bottom of the inner wall of the top cover (10) and the plurality of top cover bottom threaded holes (28) are fixedly connected by bolts to a limiting ring (12), and the top surface of the limiting ring (12) is fitted with the bottom surface of the top step of the self-rotating wheel (11). The outer wall of the self-rotating wheel (11) is vertically fixedly provided with a plurality of self-rotating wheel protrusions (29) along the circumference, and the upper end surfaces of the plurality of self-rotating wheel protrusions (29) are all fitted with the bottom of the outer wall of the top cover (10).

4. The closed multi-degree-of-freedom high-efficiency locking device according to claim 3, characterized in that: The connecting rod mechanism (4) comprises a connecting rod structure (13), wherein the connecting rod structure (13) is The connecting rod structure (13) is fixed to the top cover (10) by bolts, the center of the connecting rod structure (13) is connected to a lever (14) by bolts, and the connecting rod structure (13) and the lever (14) together form The lever (14) has a connecting rod (15) connected to both ends at equal distances by bolts, and the connecting rod structure (13) has a limiting rod (16) connected to both ends at equal distances by bolts, and the other ends of the two connecting rods (15) are connected to the centers of the two limiting rods (16) by bolts one by one.

5. The closed multi-degree-of-freedom high-efficiency locking device according to claim 4, characterized in that: The housing mechanism (3) comprises an upper housing (19), the bottom of the upper housing (19) is provided with an upper housing convex strip (30) along the circumferential direction, the upper housing (19) is clamped to the upper part of the lower housing (5) through the upper housing convex strip (30), and also comprises a movable cap (17), the inner wall of the movable cap (17) is provided with a plurality of blind holes along the circumferential direction, the inner wall of the upper housing (19) is provided with through holes corresponding to the plurality of blind holes along the circumferential direction, the upper housing (19) and the movable cap (17) are fixedly connected at the plurality of blind holes and through holes by fixing bolts (31), the plurality of fixing bolts (31) are sleeved with springs b (18), the plurality of springs b (18) are clamped to the through holes at the bottom inner wall of the upper housing (19), and the bottom inner wall of the movable cap (17) is provided with a limiting rod limiting groove (32) along the circumferential direction.

6. A closed multi-degree-of-freedom high-efficiency locking device assembly method, characterized in that: Using the closed multi-degree-of-freedom efficient locking device as claimed in claim 5 comprises the following steps: S1, assemble the upper spring pressing piece, the spring positioning column, the spring a and the lower spring pressing piece to form a spring pressing piece assembly, and place the spring pressing piece assembly into the lower housing to form a base mechanism; assemble the top cover, the rotating wheel and the limiting ring to form a pressing mechanism; S2, assembling the connecting rod mechanism and connecting the pressing mechanism with the connecting rod mechanism; S3, installing the connected pressing mechanism and connecting rod mechanism into the base mechanism; S4. Assemble the housing mechanism to the upper part of the base mechanism, adjust the connecting rod mechanism to limit the position, and complete the assembly of the locking device.

7. The method for assembling a closed multi-degree-of-freedom high-efficiency locking device according to claim 6, characterized in that: The specific process of S1 is: install the upper spring pressure plate, the lower spring pressure plate and several spring positioning columns with several bolts, then install several springs a on the spring positioning columns between the upper spring pressure plate and the lower spring pressure plate to form a spring pressure plate assembly, and then put the spring pressure plate assembly into the groove on the bottom surface of the lower shell of the lower shell; install the self-rotating wheel upward along the axis direction of the top cover into the self-rotating wheel slide groove at the bottom of the top cover, install the limit ring upward into the top cover, and use bolts to align with the threaded holes at the bottom of the top cover, tighten the bolts to form a pressing mechanism.

8. The method for assembling a closed multi-degree-of-freedom high-efficiency locking device according to claim 6, characterized in that: The specific process of S2 is: the shift rod and the limit rod are connected to the mounting holes of the connecting rod structure with bolts, the connecting rod is connected to the mounting holes of the shift rod and the limit rod with bolts to form a connecting rod mechanism, the connecting rod mechanism is installed into the threaded hole on the top of the top cover by bolts, and the installation of the connecting rod mechanism and the pressing mechanism is completed.

9. The method for assembling a closed multi-degree-of-freedom high-efficiency locking device according to claim 6, characterized in that: The specific process of S3 is as follows: aligning the self-rotating wheel protrusion of the self-rotating wheel with the lower shell slide groove of the inner wall of the lower shell, pressing the connected pressing mechanism and the connecting rod mechanism into the lower shell, compressing the spring a in the lower shell, and when the self-rotating wheel protrusion of the self-rotating wheel slides out of the lower shell slide groove, the self-rotating wheel protrusion will turn left by an angle under the elastic force of spring a and the inclined surface of the top cover. At this time, it is no longer pressed, and the self-rotating wheel protrusion slides into the stuck position of the inclined surface fixing block of the lower shell under the action of the elastic force of spring a and the inclined surface supporting force of the top cover, and the pressing mechanism, the connecting rod mechanism and the lower shell form a reliable mechanical connection in the axial direction. At the same time, the top cover protrusion on the top cover will be pressed into the lower shell slide groove of the inner wall of the lower shell at the same time, realizing the circumferential reliable mechanical connection between the pressing mechanism, the connecting rod mechanism and the lower shell, and the connecting rod in the connecting rod structure is pushed clockwise from top to bottom to align with the threaded hole on the top of the top cover.

10. The method for assembling a closed multi-degree-of-freedom high-efficiency locking device according to claim 6, characterized in that: The specific process of S4 is as follows: install the movable cap downward along the axis direction of the upper shell body so that the blind hole at the bottom of the movable cap is aligned with the through hole at the top of the upper shell body, insert the spring b into the lower end of the fixing bolt from the bottom, then fix the movable cap and the upper shell body with the fixing bolt with the spring b from the bottom to the top, install the movable cap and the upper shell body downward, connect the movable cap, the upper shell body and the lower shell body through the convex strip of the upper shell body and the mounting groove of the upper shell body, apply a force to the movable cap and the upper shell body to form a gap between the upper shell body and the movable cap, push the limit rod in the connecting rod mechanism counterclockwise through the gap to get it into the limit groove of the limit rod, remove the force applied between the movable cap and the upper shell body, and complete the assembly of the locking device.

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