Bidirectional self-locking wedge block rapid assembling and disassembling mechanism based on flexible hinge

Abstract

The invention discloses a quick assembly and disassembly mechanism for a bidirectional self-locking wedge block based on a flexible hinge, which is characterized in that an axial locking structure is designed on the basis of the original structure of the wedge block based on the flexible hinge, and is matched with transverse self-locking, so that bidirectional self-locking is realized. The flexible hinge is a symmetrical notch type wedge block with the inclination angle of 4 degrees, the inclination angle of the matching face of a wedge block installation groove matched with the wedge block is 5 degrees, the flexible hinge generates elastic-plastic deformation in the pressing-in process to achieve the matching effect with the wedge block installation groove, and the transverse self-locking function is achieved. The tool is rotated, so that the tool is inserted into a wedge surface flexible groove formed in a wedge block mounting groove, and the function of in-place axial locking is achieved. The whole two-way self-locking wedge block can achieve two-way locking in the axial direction and the transverse direction. In the assembling and disassembling process, four box cover assembling bolts are synchronously inserted into the flexible hinges and the bottom threaded holes in the wedge block installing grooves to be matched, and rapid disassembling of the box body and the box cover is achieved.

Description

Technical Field

[0001] The invention relates to the field of a new type of connection mode for quick disassembly and assembly, and relates to a mechanism for quick assembly and disassembly of a box body and a box cover suitable for fields such as aerospace. Background Art

[0002] Common ways of installing and connecting parts include bolt connection, pin connection, welding connection, riveting connection and other connection methods. Among them, bolt connection has the advantage of detachable connection when connecting two parts, but when connecting large parts, a large number of bolts are required, and it is also very inconvenient during assembly and disassembly. At the same time, under some working conditions with very strict surface requirements, the bolt head after bolt connection will have a certain impact on the working conditions. As a common loading tool, the box body and the box cover often need to be assembled and disassembled. The use of common bolt connections not only consumes a lot of time and labor costs, but also causes irreversible damage to the surface of the box body and the box cover, reducing the service life of the box.

[0003] In response to the above problems, improvements were made on the basis of the self-locking wedge block of the original patent (patent number 202410557378.5), and a two-way self-locking wedge block mechanism was obtained. It not only upgraded the structure of the flexible hinge, but also added an axial self-locking wedge structure to achieve lateral and axial two-way self-locking. This mechanism is suitable for the rapid assembly and disassembly of the box body and cover. It is mainly based on flexible hinges and axial wedge self-locking, and is used to replace traditional bolt connections. This mechanism achieves the purpose of rapid assembly of the box body and cover by driving the synchronous insertion of the four box cover assembly bolts, and achieves the purpose of rapid disassembly of the box body and cover by driving the synchronous insertion of the four box cover disassembly bolts. The two-way self-locking wedge block and the wedge block mounting groove are used in combination, and their sizes can be designed according to different workplaces to meet the assembly and disassembly of boxes and covers of different sizes. Summary of the invention

[0004] The purpose of the present invention is to provide a quick assembly and disassembly mechanism for a box body and a box cover in the aerospace field, comprising four bidirectional self-locking wedges (1), eight bidirectional self-locking wedge mounting bolts (2), a box cover (3), a box body (4), four bidirectional self-locking wedge mounting grooves (5), eight wedge mounting groove mounting bolts (6), an assembly platform (7), four box cover assembly bolts (8), and four box cover disassembly bolts (9).

[0005] The bidirectional self-locking wedge block (1) comprises a first bidirectional self-locking wedge block (1-1), a second bidirectional self-locking wedge block (1-2), a third bidirectional self-locking wedge block (1-3), and a fourth bidirectional self-locking wedge block (1-4); the first bidirectional self-locking wedge block (1-1) is composed of three parts, including a flexible hinge (1-1-1), an axial wedge lock (1-1-2), and an axial positioning nut (1-1-3); the other three bidirectional self-locking wedge blocks have the same structural composition; three holes are opened on the lower end surface of the flexible hinge (1-1-1); the larger hole in the middle is a threaded hole for connecting the box cover assembly bolt (8) for quick assembly; the two smaller through holes on both sides are used for the bidirectional self-locking wedge block mounting bolts (2) to be connected The bidirectional self-locking wedge block (1) is fixed on the box cover (3); the flexible hinge (1-1-1) is in the shape of a wedge block with an inclination angle of 4°, and symmetrical U-shaped notches are provided on both sides of the inclination, so that the wedge block has elastic-plastic deformation, has the advantages of quick assembly and disassembly and good self-locking performance, and realizes lateral locking; the axial wedge lock (1-1-2) is coaxially matched with the shaft end below the flexible hinge (1-1-1), and the surface of the wedge lock is a wedge surface with an inclination angle of 6°. Under the cooperation of tooling, it can be rotated to the locking position of the flexible wedge surface groove (5-1-1) in the bidirectional self-locking wedge block installation groove (5) to perform axial self-locking; the axial positioning nut (1-1-3) is used for positioning the shaft shoulder of the axial wedge lock (1-1-2).

[0006] The box cover (3) has four relatively large through holes and eight relatively small threaded holes respectively distributed at four corners. The relatively large through holes are used for pressing in and ejecting the box cover assembly bolts (8) and the box cover removal bolts (9). The relatively small threaded holes are used for the two-way self-locking wedge block installation bolts (2) to fix the two-way self-locking wedge block (1) on the box cover (3).

[0007] The box body (4) is provided with eight threaded holes at four corners for fixing four bidirectional self-locking wedge block mounting grooves (5) on the box body (4) through eight wedge block mounting groove mounting bolts (6);

[0008] The bidirectional self-locking wedge block installation groove (5) comprises a first bidirectional self-locking wedge block installation groove (5-1), a second bidirectional self-locking wedge block installation groove (5-2), a third bidirectional self-locking wedge block installation groove (5-3), and a fourth bidirectional self-locking wedge block installation groove (5-4); the first bidirectional self-locking wedge block installation groove (5-1) has a mating surface with an inclination angle of 5° inside the mating surface with the bidirectional self-locking wedge block (1), and a flexible wedge surface groove (5-1-1) is formed on the lower part of the side surface of the wedge surface for mating with the axial wedge lock (1-1-2) to achieve axial locking; the four bidirectional self-locking wedge block installation grooves (5) have the same structure. ; A threaded hole is formed at the bottom of the first two-way self-locking wedge block installation groove (5-1), and the threaded hole is used to cooperate with the box cover assembly bolt (8), and the four two-way self-locking wedge blocks (1) on the box cover (3) are pressed into the corresponding four two-way self-locking wedge block installation grooves (5), so as to achieve the effect of quick assembly of the box cover; the threaded hole at the bottom of the first two-way self-locking wedge block installation groove (5-1) has a diameter smaller than the box cover removal bolt (9), and is used to cooperate with the box cover removal bolt (9), and the four two-way self-locking wedge blocks (1) on the box cover (3) are pushed out of the corresponding four two-way self-locking wedge block installation grooves (5), so as to achieve the effect of quick removal of the box cover;

[0009] The upper end surface of the assembly platform (7) is a horizontal plane, and the lower end surface is an arc surface, and the radius of curvature of the arc surface is consistent with the radius of curvature of the upper end arc surface of the box cover (3);

[0010] The invention has three working states: the box body and the box cover are in a quick assembly state; the box body and the box cover are in a locked state; and the box body and the box cover are in a quick disassembly state.

[0011] When the box body and the box cover are in the quick assembly state, the four box cover assembly bolts (8) pass through the corresponding four two-way self-locking wedge blocks (1) and cooperate with the threaded holes at the bottom of the four two-way self-locking wedge block installation grooves (5). The four box cover assembly bolts (8) rotate downward synchronously, driving the assembly platform (7) to move downward. The installation platform (7) drives the four two-way self-locking wedge blocks (1) on the box cover (3) to be pressed downward into the corresponding four two-way self-locking wedge block installation grooves (5) on the box body (4). The flexible hinges (1-1-1) in the two-way self-locking wedge blocks (1) undergo elastic-plastic deformation. At this time, the box cover (3) and the box body (4) are transversely locked, completing the quick assembly.

[0012] When the box body and box cover are in a locked state, after the four bidirectional self-locking wedge blocks (1) are installed to the designated positions of the corresponding four bidirectional self-locking wedge block installation grooves (5), the axial wedge lock (1-1-2) starts to rotate with the cooperation of the four axial self-locking assembly tools and is inserted into the flexible wedge surface groove (5-1-1) in the bidirectional self-locking wedge block installation groove (5), and the box cover (3) and the box body (4) complete axial locking. At this time, the box cover (3) and the box body (4) are already in a bidirectional locking state.

[0013] When the box body and box cover are in the disassembly state, the axial wedge lock (1-1-2) starts to rotate with the cooperation of the four axial self-locking assembly tools, and the axial wedge lock (1-1-2) rotates out of the flexible wedge surface groove (5-1-1) in the two-way self-locking wedge block installation groove (5), and the box cover (3) and the box body (4) complete axial unlocking. Subsequently, the four box cover disassembly bolts (9) and the corresponding threaded holes on the four two-way self-locking wedge blocks (1) cooperate, and the four box cover disassembly bolts (9) rotate downward synchronously. Since the diameter of the threaded hole at the bottom of the two-way self-locking wedge block installation groove (5) is smaller than the diameter of the threaded hole on the two-way self-locking wedge block (1), the box cover disassembly bolt (9) continues to rotate against the lower surface of the two-way self-locking wedge block installation groove (5), and the four two-way self-locking wedge blocks (1) move vertically upward along the corresponding box cover disassembly bolts (9). At this time, the box cover (3) and the box body (4) are quickly disassembled.

[0014] The advantages of the present invention are:

[0015] 1. The present invention has a simple structure, and the assembly and disassembly principles of the box cover (3) and the box body (4) are mainly realized by the two-way self-locking wedge (1) and the two-way self-locking wedge installation groove (5).

[0016] 2. The present invention no longer uses the original bolt connection method, but through the different diameters of the threaded holes at the bottom of the two-way self-locking wedge (1) and the two-way self-locking wedge installation groove (5), the box cover installation bolts (8) are used to achieve rapid assembly of the box body (3) and the box cover (4).

[0017] 3. The present invention no longer uses the original bolt disassembly method, but through the different diameters of the threaded holes at the bottom of the two-way self-locking wedge (1) and the two-way self-locking wedge installation groove (5), the box cover disassembly bolts (9) are used to achieve rapid disassembly of the box body (3) and the box cover (4).

[0018] 4. The bidirectional self-locking wedge block (1) and the wedge-shaped mounting groove (5) of the present invention can be designed according to the sizes of different box bodies and box covers, and different bidirectional self-locking wedge blocks and bidirectional self-locking wedge block mounting grooves can be replaced according to different work requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Box cover - two-way self-locking wedge installation diagram

[0020] Figure 2 Schematic diagram of the box cover-two-way self-locking wedge assembly

[0021] Figure 3 Box - Two-way self-locking wedge installation slot installation diagram

[0022] Figure 4 Schematic diagram of box-bidirectional self-locking wedge installation groove assembly

[0023] Figure 5 Partial schematic diagram of the initial position of the box body and box cover in the quick assembly state

[0024] Figure 6 Partial diagram of the box body and box cover in the quick assembly state

[0025] Figure 7 Partial schematic diagram of the initial position of the box body and box cover in the quick disassembly state

[0026] Figure 8 Partial diagram of the box body and cover in the quick disassembly state

[0027] Fig. 9 Installation platform diagram

[0028] Fig.10 Exploded diagram of the bidirectional self-locking wedge assembly

[0029] Fig.11 Schematic diagram of the flexible wedge surface groove for axial locking in the installation groove of the bidirectional self-locking wedge

[0030] Fig.12 Partial schematic diagram of the bidirectional self-locking wedge in the unlocked state

[0031] Fig.13 Partial schematic diagram of the lateral locking state of the bidirectional self-locking wedge

[0032] Fig.14 Partial schematic diagram of the axial locking state of the bidirectional self-locking wedge

[0033] Fig.15 Cross-sectional view of bidirectional self-locking wedge and wedge mounting groove

[0034] In the figure:

[0035] 1-1 first two-way self-locking wedge; 1-2 second two-way self-locking wedge; 1-3 third two-way self-locking wedge; 1-4 fourth two-way self-locking wedge; 1-1-1 flexible hinge; 1-1-2 axial wedge lock; 1-1-3 axial positioning nut;

[0036] 2-1 first two-way self-locking wedge mounting bolt; 2-2 second two-way self-locking wedge mounting bolt; 2-3 third two-way self-locking wedge mounting bolt; 2-4 fourth two-way self-locking wedge mounting bolt; 2-5 fifth two-way self-locking wedge mounting bolt; 2-6 sixth two-way self-locking wedge mounting bolt; 2-7 seventh two-way self-locking wedge mounting bolt; 2-8 eighth two-way self-locking wedge mounting bolt;

[0037] 3 box cover; 4 box body;

[0038] 5-1 first two-way self-locking wedge installation slot; 5-2 second two-way self-locking wedge installation slot; 5-3 third two-way self-locking wedge installation slot; 5-4 fourth two-way self-locking wedge installation slot; 5-1-1 flexible wedge surface slot;

[0039] 6-1 Mounting bolts for the first wedge mounting slot; 6-2 Mounting bolts for the second wedge mounting slot; 6-3 Mounting bolts for the third wedge mounting slot; 6-4 Mounting bolts for the fourth wedge mounting slot; 6-5 Mounting bolts for the fifth wedge mounting slot; 6-6 Mounting bolts for the sixth wedge mounting slot; 6-7 Mounting bolts for the seventh wedge mounting slot; 6-8 Mounting bolts for the eighth wedge mounting slot;

[0040] 7. Installation platform;

[0041] 8-1 The first box cover assembly bolt; 8-2 The second box cover assembly bolt; 8-3 The third box cover assembly bolt; 8-4 The fourth box cover assembly bolt;

[0042] 9-1 Remove the bolts of the first box cover; 9-2 Remove the bolts of the second box cover; 9-3 Remove the bolts of the third box cover; 9-4 Remove the bolts of the fourth box cover. DETAILED DESCRIPTION

[0043] The present invention is described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the following embodiments.

[0044] Example of the box body-box cover quick assembly process:

[0045] The partial schematic diagram of the initial position of the box body and box cover in the quick assembly state is as follows Figure 5 As shown, the first box cover assembly bolt (8-1) is inserted into and passes through the first two-way self-locking wedge block (1-1), and cooperates with the threaded hole at the bottom of the first two-way self-locking wedge block mounting groove (5-1). The bolt head of the first box cover assembly bolt (8-1) contacts the mounting platform (7), and the lower surface of the mounting platform (7) contacts the upper surface of the box cover (3). The first box cover assembly bolt (8-1) rotates downward, and the bolt head drives the mounting platform (7) to press the box cover (3) downward, pressing the first two-way self-locking wedge block (1-1) downward into the first two-way self-locking wedge block mounting groove (5-1). The flexible hinge (1-1-1) in the first two-way self-locking wedge block (1-1) undergoes elastic-plastic deformation to complete lateral locking. The assembly states of the other three two-way self-locking wedge blocks are the same. At this time, the box cover moves from the initial position of the assembly state to the completed position of the assembly state. The box body-box cover is in the completed position of the quick assembly state. The partial schematic diagram is as follows Figure 6 shown.

[0046] Example of the box body-box cover locking process:

[0047] A partial schematic diagram of the lateral locking state of the bidirectional self-locking wedge is shown in Fig.13 As shown, the partial schematic diagram of the axial locking state of the bidirectional self-locking wedge is as follows Fig.14 As shown, the axial wedge lock (1-1-2) starts to rotate with the cooperation of the axial self-locking assembly tooling and is inserted into the locking position of the flexible wedge surface groove (5-1-1) in the two-way self-locking wedge block installation groove (5). The locking action of the other three two-way self-locking wedge blocks is the same. The box cover (3) and the box body (4) complete the axial locking. At this time, the box cover (3) and the box body (4) are already in a two-way locking state.

[0048] Example of the box body-box cover quick disassembly process:

[0049] The partial schematic diagram of the initial position of the box body and the box cover in the quick disassembly state is as follows Figure 7 As shown, the axial wedge lock (1-1-2) starts to rotate with the cooperation of the axial self-locking assembly tool, and the axial wedge lock (1-1-2) rotates out of the flexible wedge surface groove (5-1-1) in the two-way self-locking wedge block installation groove (5), and the box cover (3) and the box body (4) complete axial unlocking. Subsequently, the first box cover disassembly bolt (9-1) and the threaded hole on the first two-way self-locking wedge block (1-1) are matched. The cross-sectional view of the two-way self-locking wedge block and the wedge block installation groove is as shown in Fig.15 As shown, the positions of the two threaded holes can be seen. The first box cover disassembly bolt (9-1) is rotated downward until it contacts the bottom upper surface of the first two-way self-locking wedge block installation groove (5-1). The first box cover disassembly bolt (9-1) continues to rotate, and the first two-way self-locking wedge block (1-1) moves upward along the first box cover disassembly bolt (9-1). The disassembly status of the other three two-way self-locking wedge blocks is the same. At this time, the box cover moves from the initial position of the disassembly state to the completed position of the disassembly state. The box body-box cover is in the completed position of the quick disassembly state. A partial schematic diagram is shown in FIG. Figure 8 shown.

Claims

1. A bidirectional self-locking wedge quick assembly and disassembly mechanism based on a flexible hinge, characterized in that: The invention comprises four bidirectional self-locking wedges (1), eight bidirectional self-locking wedge mounting bolts (2), a box cover (3), a box body (4), four bidirectional self-locking wedge mounting grooves (5), eight wedge mounting groove mounting bolts (6), an assembly platform (7), four box cover assembly bolts (8), and four box cover disassembly bolts (9); the bidirectional self-locking wedge mounting bolts (2) fix the bidirectional self-locking wedges (1) on the box cover (3); the four box cover assembly bolts (8) cooperate with the threaded holes at the bottom of the four bidirectional self-locking wedge mounting grooves (5), and the four box cover assembly bolts (8) rotate downward synchronously to drive the assembly platform (7) to move downward, and the assembly platform (7) drives the four bidirectional self-locking wedges (1) on the box cover (3) to be pressed downward into the corresponding four bidirectional self-locking wedge mounting grooves (5) on the box body (4); eight threaded holes are opened at four corners of the box body (4), which are used to fix the four bidirectional self-locking wedge mounting grooves (5) on the box body (4) through the eight wedge mounting groove mounting bolts (6); The two-way self-locking wedge (1) comprises a first two-way self-locking wedge (1-1), a second two-way self-locking wedge (1-2), a third two-way self-locking wedge (1-3), and a fourth two-way self-locking wedge (1-4); the four two-way self-locking wedges have the same structure; the first two-way self-locking wedge (1-1) consists of three parts, including a flexible hinge (1-1-1), an axial wedge lock (1-1-2), and an axial positioning nut (1-1-3); three holes are opened on the lower end surface of the flexible hinge (1-1-1), and the large hole in the middle is a threaded hole for connecting the box cover assembly bolt (8) for quick connection Assembly action; two small through holes on both sides are used for the two-way self-locking wedge block mounting bolts (2) to fix the two-way self-locking wedge block (1) on the box cover (3); the axial wedge lock (1-1-2) is coaxially matched with the shaft end below the flexible hinge (1-1-1), and the surface of the axial wedge lock (1-1-2) is a wedge surface with an inclination angle of 6°, which can be rotated to the locking position of the flexible wedge surface groove (5-1-1) in the two-way self-locking wedge block mounting groove (5) under the cooperation of the tooling to perform axial self-locking; the axial positioning nut (1-1-3) is used for the shoulder positioning of the axial wedge lock (1-1-2); The box cover (3) has four large through holes and eight small threaded holes distributed at four corners. The large through holes are used for pressing in and ejecting the box cover assembly bolts (8) and the box cover removal bolts (9). The small threaded holes are used for the two-way self-locking wedge mounting bolts (2) to fix the two-way self-locking wedge (1) on the box cover (3). The bidirectional self-locking wedge block installation groove (5) comprises a first bidirectional self-locking wedge block installation groove (5-1), a second bidirectional self-locking wedge block installation groove (5-2), a third bidirectional self-locking wedge block installation groove (5-3), and a fourth bidirectional self-locking wedge block installation groove (5-4); the four bidirectional self-locking wedge block installation grooves (5) have the same structure; the first bidirectional self-locking wedge block installation groove (5-1) has a wedge surface with an inclined angle of 5° on its inside and a flexible wedge surface groove (5-1-1) on its side surface for interlocking with the axial wedge lock (1-1 -2) to achieve axial locking; a threaded hole is opened at the bottom of the first two-way self-locking wedge block installation groove (5-1), and the threaded hole is used to cooperate with the box cover assembly bolt (8) to press the four two-way self-locking wedge blocks (1) on the box cover (3) into the corresponding four two-way self-locking wedge block installation grooves (5); the diameter of the threaded hole at the bottom of the first two-way self-locking wedge block installation groove (5-1) is smaller than the box cover removal bolt (9), and is used to cooperate with the box cover removal bolt (9) to push the four two-way self-locking wedge blocks (1) on the box cover (3) out of the corresponding four two-way self-locking wedge block installation grooves (5).

2. A bidirectional self-locking wedge block quick assembly and disassembly mechanism based on a flexible hinge according to claim 1, characterized in that: By utilizing the elastic-plastic deformation of the flexible hinge (1-1-1) in the two-way self-locking wedge block (1), the box cover (3) and the box body (4) are transversely locked, thereby achieving the purpose of rapid assembly of the box cover (3) and the box body (4); after the four two-way self-locking wedge blocks (1) are installed at the designated positions of the corresponding four two-way self-locking wedge block installation grooves (5), the axial wedge lock (1-1-2) starts to rotate with the cooperation of the axial self-locking assembly tooling, and is inserted into the locking position of the flexible wedge surface groove (5-1-1) in the two-way self-locking wedge block installation groove (5), the box cover (3) and the box body (4) are axially locked, and the box cover (3) and the box body (4) are in a two-way locked state.

3. A bidirectional self-locking wedge block quick assembly and disassembly mechanism based on a flexible hinge according to claim 1, characterized in that: The axial wedge lock (1-1-2) starts to rotate with the cooperation of the axial self-locking assembly tool, and the axial wedge lock (1-1-2) rotates out of the flexible wedge surface groove (5-1-1) in the two-way self-locking wedge block installation groove (5), and the box cover (3) and the box body (4) complete the axial unlocking, and the four box cover removal bolts (9) and the corresponding four threaded holes on the two-way self-locking wedge blocks (1) cooperate, and the four box cover removal bolts (9) rotate downward synchronously.

4. A bidirectional self-locking wedge block quick assembly and disassembly mechanism based on a flexible hinge according to claim 1, characterized in that: The first bidirectional self-locking wedge block (1-1), the second bidirectional self-locking wedge block (1-2), the third bidirectional self-locking wedge block (1-3) and the fourth bidirectional self-locking wedge block (1-4) are symmetrically distributed on the four corners of the box cover (3).

5. The bidirectional self-locking wedge quick assembly and disassembly mechanism based on a flexible hinge according to claim 1, characterized in that: The first bidirectional self-locking wedge block installation groove (5-1), the second bidirectional self-locking wedge block installation groove (5-2), the third bidirectional self-locking wedge block installation groove (5-3), and the fourth bidirectional self-locking wedge block installation groove (5-4) are symmetrically distributed on the four corners of the box body (4).

6. A bidirectional self-locking wedge block quick assembly and disassembly mechanism based on a flexible hinge according to claim 1, characterized in that: The flexible hinge (1-1-1) is in the shape of a wedge block with an inclination angle of 4°, and symmetrical U-shaped notches are provided on both sides of the inclination, so that the wedge block has elastic-plastic deformation, and has the advantages of quick assembly and disassembly and self-locking property, and can achieve lateral locking; lateral locking is achieved through the elastic-plastic deformation of the flexible hinge (1-1-1) in the two-way self-locking wedge block (1), and axial locking is achieved through the elastic-plastic deformation and axial positioning of the axial wedge lock (1-1-2), so as to achieve the assembly of the box cover (3) and the box body (4); the box cover assembly bolt (8) and the bottom threaded hole of the two-way self-locking wedge block installation groove (5) are matched, and the box cover has the ability of quick assembly; the box cover disassembly bolt (9) and the threaded hole on the two-way self-locking wedge block (1) are matched, and the box cover has the ability of quick disassembly.

7. A bidirectional self-locking wedge block quick assembly and disassembly mechanism based on a flexible hinge according to claim 1, characterized in that: The upper end surface of the assembly platform (7) is a horizontal plane, and the lower end surface is an arc surface, and the curvature radius of the arc surface is consistent with the curvature radius of the upper end arc surface of the box cover (3).

8. The bidirectional self-locking wedge quick assembly and disassembly mechanism based on a flexible hinge according to claim 1, characterized in that: The diameter of the threaded hole at the bottom of the two-way self-locking wedge block installation groove (5) is smaller than the diameter of the threaded hole on the two-way self-locking wedge block (1). The box cover disassembly bolt (9) is pressed against the lower surface of the two-way self-locking wedge block installation groove (5) and continues to rotate. The four two-way self-locking wedge blocks (1) move vertically upward along the corresponding box cover disassembly bolts (9), thereby achieving the purpose of quickly disassembling the box cover (3) and the box body (4).

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