A flange with quick connection effect and quick connection method thereof

Abstract

The present invention relates to the field of flange processing technology, specifically to a flange with a quick connection effect and a processing method thereof, comprising a first connection disk and a second connection disk, the inner ring of the first connection disk is provided with an auxiliary connection ring, the inner ring of the second connection disk is provided with a connection gasket connected to the auxiliary connection ring; the upper end face and the lower end face of the auxiliary connection ring are both provided with a snap-fit ​​groove, the upper end face and the lower end face of the second connection disk are both slidably provided with a snap-fit ​​block, the inner side of the outer ring of the first connection disk is provided with a first auxiliary disk, and the inner side of the outer ring of the second connection disk is rotatably provided with a second auxiliary disk; the surface of the first auxiliary disk is provided with a plurality of through grooves, one side of each through groove is provided with a groove, the inner side surface of the second auxiliary disk is provided with a plurality of card plates inserted into the inner side of the groove, and the inner side surface of the card plate is provided with an elastic card block inserted into the groove. The present invention replaces the traditional multiple threaded connection method by using a connection structure that is easy to operate, so that the flange can be convenient and quick when connected.

Description

Technical Field

[0001] The invention relates to a flange, in particular to a flange with a quick connection effect and a quick connection method thereof, and belongs to the technical field of flange processing. Background Art

[0002] Flange, also known as flange flange or flange; flange is a part that connects shafts to each other and is used to connect pipe ends; there are also flanges used on the inlet and outlet of equipment, used to connect two devices, such as reducer flanges; flange connection or flange joint refers to a detachable connection that is connected by flanges, gaskets and bolts as a combined sealing structure; pipe flange refers to the flange used for piping in pipeline devices, and when used on equipment, it refers to the inlet and outlet flanges of the equipment; there are holes on the flange, and bolts connect the two flanges tightly; gaskets are used to seal between flanges; flanges are divided into threaded flanges, welding flanges and clamping flanges; flanges are used in pairs, and threaded flanges can be used for low-pressure pipelines, and welding flanges can be used for pressures above four kilograms. Add a sealing gasket between the two flanges and then tighten them with bolts; flanges of different pressures have different thicknesses, and they use different bolts; when water pumps and valves are connected to pipelines, parts of these equipment are also made into corresponding flange shapes, also called flange connections;

[0003] However, the existing flanges require many steps to be operated during connection, and multiple nuts and threads need to be connected to connect and fix the flanges. This is troublesome when connecting the flanges, thereby reducing the speed of flange connection and affecting installation efficiency.

[0004] Therefore, it is urgent to improve the flange to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a flange with a quick connection effect and a quick connection method thereof, which replaces the traditional multiple threaded connection method with a connection structure that is easy to operate, so that the flange can be connected conveniently and quickly, greatly improving the efficiency of flange connection installation.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] A flange with a quick connection effect, comprising a first connection plate and a second connection plate, wherein the inner ring of the first connection plate is provided with an auxiliary connection ring, and the inner ring of the second connection plate is provided with a connection gasket connected to the auxiliary connection ring;

[0008] The upper and lower end surfaces of the auxiliary connecting ring are provided with engaging grooves. The upper and lower end surfaces of the second connecting disk are slidably provided with engaging blocks. The inner side of the outer ring of the first connecting disk is provided with a first auxiliary disk, and the inner side of the outer ring of the second connecting disk is provided with a second auxiliary disk.

[0009] The surface of the first auxiliary disk is provided with a plurality of through slots, and a groove is provided on one side of each through slot. The inner side of the second auxiliary disk is provided with a plurality of clamping plates inserted into the grooves, and the inner side of the clamping plates is provided with elastic clamping blocks inserted into the grooves.

[0010] Preferably, the auxiliary connecting ring protrudes from the inner side surface of the first connecting plate, the inner side surface of the auxiliary connecting ring contacts the inner side surface of the connecting gasket, the inner side surface of the auxiliary connecting ring and the inner side surface of the connecting gasket are both provided with rubber sealing pads, the inner side surface of the auxiliary connecting ring is also provided with a plurality of positioning holes, and the inner side surface of the connecting gasket is provided with a plurality of positioning rods.

[0011] Preferably, the upper end surface and the lower end surface of the inner ring of the second connecting disk are provided with placement grooves, and the outer sides of the two placement grooves are connected with threaded holes, and the two threaded holes extend to the upper surface and the lower surface of the second connecting disk respectively, and a threaded rod is screwed and connected in the threaded hole, and a sliding rod is provided on the upper end surface of the locking block. The sliding rod has a diameter smaller than the threaded hole and slides in the threaded hole, and a first adsorption magnet is provided at one end of the sliding rod close to the threaded rod, and a second adsorption magnet that is adsorbed to the first adsorption magnet is provided at one end of the threaded rod close to the sliding rod.

[0012] Preferably, the engaging groove includes a first engaging groove and a second engaging groove, the first engaging groove and the second engaging groove are staggered to form a cross engaging groove, and the engaging block is a cross engaging block having the same shape as the cross engaging groove.

[0013] Preferably, an annular groove is formed on a side of the outer ring of the second connecting disk close to the first connecting disk, an annular block connected to the annular groove is provided on the inner ring of the second auxiliary disk, and a plurality of micro protrusions are provided on the outer ring of the second auxiliary disk.

[0014] Preferably, the groove is arranged on the outer side surface of the first auxiliary disk, the position of the card plate corresponds to the position of the through groove, the card plate includes a first support plate and a second support plate, the first support plate is vertically arranged on the inner side surface of the second auxiliary disk, the second support plate is horizontally arranged on the inner side surface of the first support plate, a gap with the same thickness as the first auxiliary disk is left between the second support plate and the second auxiliary disk, and the elastic card block is arranged on the end of the inner side surface of the second support plate away from the first support plate.

[0015] Preferably, a sliding groove is provided on the inner side surface of the second support plate at one end away from the first support plate, the elastic card block slides in the sliding groove, the elastic card block and the sliding groove are connected by a compression spring, and the side surface of the elastic card block away from the first support plate is an arc surface structure.

[0016] Preferably, a pull rod is connected to a surface of the elastic block close to the compression spring, and the pull rod penetrates to the surface of the second support plate.

[0017] Preferably, the inner side surface of the first connecting disk is further provided with a plurality of connecting holes, in which the first magnet is arranged, and the inner side surface of the second connecting disk is provided with a plurality of connecting rods connected to the connecting holes, and the connecting rods are provided with a second magnet which is attracted to the first magnet.

[0018] A quick connection method for a flange with a quick connection effect comprises the following steps:

[0019] S1: Preliminary connection: When the flange is connected, the first connection plate and the second connection plate are brought close to each other, the inner side of the auxiliary connection ring will contact the connection gasket, and the positioning rod will be inserted into the positioning hole, and the connecting rod will be inserted into the connecting hole. The flange is initially fixed by the principle of mutual adsorption between the first magnet and the second magnet, and then the threaded rod is rotated to rotate in the threaded hole, and then the sliding rod and the locking block are pushed, so that the locking block is pushed out of the placement groove and locked into the locking groove, thereby realizing the initial fixed connection of the flange;

[0020] S2: Completely fixed connection: After the flange is initially fixed, the card plate will be smoothly inserted into the through groove, and then the second support plate will protrude from the surface of the outer side surface of the first auxiliary disk. Then, rotating the second auxiliary disk will drive the card plate to rotate in the through groove, thereby utilizing the gap between the second support plate and the second auxiliary disk to clamp the first auxiliary disk. In the process of the second auxiliary disk driving the card plate to rotate, since the elastic card block is in direct contact with the outer side surface of the first auxiliary disk and is subjected to pressure, the elastic card block will shrink into the sliding groove when the card plate rotates, and the compression spring will also shrink. When the elastic card block rotates to the groove, the elastic force reset effect of the compression spring will be utilized to eject the elastic card block into the groove, thereby achieving fixed connection of the flange.

[0021] The present invention has at least the following beneficial effects:

[0022] 1. By utilizing the engaging groove, the engaging block, the first auxiliary disk, the through groove, the groove, the clamping plate, the elastic clamping block and the second auxiliary disk with a rotating effect, the flange adopts the above-mentioned easy-to-operate connection structure to replace the traditional multiple threaded connection method, so that the flange can be connected conveniently and quickly, greatly improving the efficiency of flange connection installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the second connection plate of the present invention;

[0026] Figure 3 A partial cross-sectional view of a second connection plate of the present invention;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the first auxiliary disk of the present invention;

[0028] Figure 5 It is a cross-sectional view of a card board of the present invention.

[0029] In the figure, 1-first connecting disk, 2-second connecting disk, 3-auxiliary connecting ring, 4-connecting gasket, 5-clamping groove, 6-clamping block, 7-first auxiliary disk, 8-second auxiliary disk, 9-through groove, 10-groove, 11-clamping plate, 12-elastic clamping block, 13-rubber sealing pad, 14-positioning hole, 15-positioning rod, 16-placing groove, 17-threaded hole, 18-threaded rod, 19-sliding rod, 20-first adsorption magnet, 21-second adsorption magnet, 22-first clamping groove, 23-second clamping groove, 24-annular groove, 25-annular block, 26-micro protrusion, 27-first support plate, 28-second support plate, 29-sliding groove, 30-compression spring, 31-pull rod, 32-connecting hole, 33-first magnet, 34-connecting rod, 35-second magnet. DETAILED DESCRIPTION

[0030] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0031] like Figure 1-Figure 5As shown, the flange with a quick connection effect provided in this embodiment includes a first connection disk 1 and a second connection disk 2, the inner ring of the first connection disk 1 is provided with an auxiliary connection ring 3, and the inner ring of the second connection disk 2 is provided with a connection gasket 4 connected to the auxiliary connection ring 3; the auxiliary connection ring 3 protrudes from the inner side surface of the first connection disk 1, and the inner side surface of the auxiliary connection ring 3 contacts the inner side surface of the connection gasket 4, and the inner side surfaces of the auxiliary connection ring 3 and the connection gasket 4 are both provided with a rubber sealing gasket 13, and the provision of the rubber sealing gasket 13 can improve the sealing effect when the flange is connected, and the inner side surface of the auxiliary connection ring 3 is also provided with a plurality of positioning holes 14, and the inner side surface of the connection gasket 4 is provided with a plurality of positioning rods 15, and the provision of the positioning holes 14 and the positioning rods 15 can play a positioning effect when the flange is connected to prevent displacement during connection;

[0032] The upper and lower end surfaces of the auxiliary connecting ring 3 are provided with a snap-fitting groove 5. The upper and lower end surfaces of the second connecting disk 2 are slidably provided with a snap-fitting block 6. The upper and lower end surfaces of the inner ring of the second connecting disk 2 are provided with a placement groove 16. The placement groove 16 is used for the contraction placement of the snap-fitting block 6. The outer sides of the two placement grooves 16 are connected with threaded holes 17. The two threaded holes 17 extend to the upper and lower surfaces of the second connecting disk 2 respectively. The threaded holes 17 are screwed in and connected with a threaded rod 18. The upper end of the snap-fitting block 6 A slide rod 19 is provided on the surface, and the slide rod 19 has a diameter smaller than the threaded hole 17 and slides in the threaded hole 17. A first adsorption magnet 20 is provided at one end of the slide rod 19 close to the threaded rod 18, and a second adsorption magnet 21 that is mutually adsorbed with the first adsorption magnet 20 is provided at one end of the threaded rod 18 close to the slide rod 19. The mutual adsorption of the first adsorption magnet 20 and the second adsorption magnet 21 can ensure that the threaded rod 18 is always driven by the slide rod 19 to drive the engaging block 6 to slide and adjust, and will not be separated;

[0033] The engaging groove 5 includes a first engaging groove 22 and a second engaging groove 23. The first engaging groove 22 and the second engaging groove 23 are staggered to form a cross engaging groove. The engaging block 6 is a cross engaging block with the same shape as the cross engaging groove. The arrangement of the cross engaging block and the cross engaging groove plugging can further improve the connection and fixing effect between the first connecting plate 1 and the second connecting plate 2, and can prevent the stability of the connection between the first connecting plate 1 and the second connecting plate 2, and prevent the first connecting plate 1 and the second connecting plate 2 from falling off and shaking.

[0034] A first auxiliary disk 7 is arranged on the inner side of the outer ring of the first connection disk 1, and a second auxiliary disk 8 is rotatably arranged on the inner side of the outer ring of the second connection disk 2; an annular groove 24 is provided on the side of the outer ring of the second connection disk 2 close to the first connection disk 1, and an annular block 25 connected to the annular groove 24 is arranged on the inner ring of the second auxiliary disk 8. The second auxiliary disk 8 has a rotation effect on the surface of the second connection disk 2 through the arrangement of the annular block 25 and the annular groove 24 being slidably connected. A plurality of micro protrusions 26 are arranged on the outer ring of the second auxiliary disk 8, and the arrangement of the micro protrusions 26 facilitates the rotation of the second auxiliary disk 8;

[0035] A plurality of through slots 9 are provided on the surface of the first auxiliary disk 7, and a groove 10 is provided on one side of each through slot 9. A plurality of card plates 11 inserted into the grooves 10 are provided on the inner side surface of the second auxiliary disk 8, and an elastic card block 12 inserted into the groove 10 is provided on the inner side surface of the card plate 11; the groove 10 is provided on the outer side surface of the first auxiliary disk 7, and the position of the card plate 11 corresponds to the position of the through slot 9. The card plate 11 includes a first support plate 27 and a second support plate 28. The first support plate 27 is vertically provided on the inner side surface of the second auxiliary disk 8, and the second support plate 28 is horizontally provided on the inner side surface of the first support plate 27. A gap corresponding to the thickness of the first auxiliary disk 7 is left between the second support plate 28 and the second auxiliary disk 8. The same, thereby ensuring that the first auxiliary disk 7 can be stuck into the gap left between the second support plate 28 and the second auxiliary disk 8, the elastic clamping block 12 is arranged on the end of the inner side surface of the second support plate 28 away from the first support plate 27; the inner side surface of the second support plate 28 is provided with a sliding groove 29 at the end away from the first support plate 27, the elastic clamping block 12 slides in the sliding groove 29, the elastic clamping block 12 and the sliding groove 29 are connected by a compression spring 30, the side of the elastic clamping block 12 away from the first support plate 27 is a circular arc surface structure, the setting of the circular arc surface structure facilitates the rotation of the clamping plate 11 on the surface of the first auxiliary disk 11, so that the elastic clamping block 12 can be smoothly and quickly slid into the inside of the groove 10.

[0036] In this embodiment, if Figure 5 As shown, a pull rod 31 is connected to one side of the elastic block 12 close to the compression spring 30, and the pull rod 31 extends through the surface of the second support plate 28. The setting of the pull rod 31 facilitates pulling and contracting the elastic block 12 into the sliding groove 29, and disengaging the elastic block 12 from the groove 10 when the flange is disassembled, thereby facilitating the later disassembly of the flange.

[0037] In this embodiment, if Figure 1 and Figure 2As shown, the inner side surface of the first connecting disk 1 is also provided with a plurality of connecting holes 32, and the first magnet 33 is arranged in the connecting hole 32. The inner side surface of the second connecting disk 2 is provided with a plurality of connecting rods 34 connected to the connecting holes 32, and the connecting rods 34 are provided with second magnets 35 that are mutually adsorbed with the first magnets 33. When the first connecting disk 1 and the second connecting disk 2 are initially connected, the connecting rods 34 will be inserted into the connecting holes 32, and the first connecting disk 1 and the second connecting disk 2 will be initially adsorbed and fixed by the setting of the adsorption connection between the first magnet 33 and the second magnet 35, thereby facilitating the next step of connection.

[0038] A quick connection method for a flange with a quick connection effect comprises the following steps:

[0039] S1: Preliminary connection: When the flange is connected, the first connection plate 1 and the second connection plate 2 are brought close to each other, the inner side of the auxiliary connection ring 3 is in contact with the connection gasket 4, and the positioning rod 15 is inserted into the positioning hole 14, and the connecting rod 34 is inserted into the connecting hole 32. The flange is initially fixed by the principle of mutual adsorption between the first magnet 33 and the second magnet 35, and then the threaded rod 18 is rotated to rotate in the threaded hole 17, and then the sliding rod 19 and the locking block 6 are pushed, so that the locking block 6 is pushed out of the placement groove 16 and locked into the locking groove 5, thereby realizing the initial fixed connection of the flange;

[0040] S2: Completely fixed connection: After the flange is initially fixed, the card plate 11 will be smoothly inserted into the through groove 9, and then the second support plate 28 will protrude from the surface of the outer side surface of the first auxiliary disk 7. Then, rotating the second auxiliary disk 8 will drive the card plate 11 to rotate in the through groove 9, thereby utilizing the gap between the second support plate 28 and the second auxiliary disk 8 to clamp the first auxiliary disk 7. In the process of the second auxiliary disk 8 driving the card plate 11 to rotate, since the elastic card block 12 will be in direct contact with the outer side surface of the first auxiliary disk 7 and subjected to pressure, when the card plate 11 rotates, the elastic card block 12 will shrink into the sliding groove 29, and the compression spring 30 will also shrink. When the elastic card block 12 rotates to the groove 10, the elastic force reset effect of the compression spring 30 will be utilized to eject the elastic card block 12 into the groove 10, thereby achieving a fixed connection of the flange.

[0041] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0042] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0043] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A flange with a quick connection effect, comprising a first connection plate (1) and a second connection plate (2), characterized in that: The inner ring of the first connection disk (1) is provided with an auxiliary connection ring (3), and the inner ring of the second connection disk (2) is provided with a connection gasket (4) connected to the auxiliary connection ring (3); The upper end surface and the lower end surface of the auxiliary connecting ring (3) are both provided with a snap-fitting groove (5); the upper end surface and the lower end surface of the second connecting disk (2) are both slidably provided with a snap-fitting block (6); the inner side of the outer ring of the first connecting disk (1) is provided with a first auxiliary disk (7); the inner side of the outer ring of the second connecting disk (2) is provided with a second auxiliary disk (8) rotatably provided; The surface of the first auxiliary disk (7) is provided with a plurality of through grooves (9), one side of each of the through grooves (9) is provided with a groove (10), the inner side surface of the second auxiliary disk (8) is provided with a plurality of clamping plates (11) inserted into the inner side surface of the grooves (10), the inner side surface of the clamping plates (11) is provided with elastic clamping blocks (12) inserted into the grooves (10), the auxiliary connecting ring (3) protrudes from the inner side surface of the first connecting disk (1), the inner side surface of the auxiliary connecting ring (3) contacts the inner side surface of the connecting gasket (4), and the auxiliary The inner side surface of the auxiliary connection ring (3) and the inner side surface of the connection gasket (4) are both provided with a rubber sealing pad (13), the inner side surface of the auxiliary connection ring (3) is also provided with a plurality of positioning holes (14), the inner side surface of the connection gasket (4) is provided with a plurality of positioning rods (15), the engaging groove (5) comprises a first engaging groove (22) and a second engaging groove (23), the first engaging groove (22) and the second engaging groove (23) are staggered to form a cross engaging groove, and the engaging block (6) is a cross engaging block having the same shape as the cross engaging groove.

2. A flange with a quick connection effect according to claim 1, characterized in that: The upper end surface and the lower end surface of the inner ring of the second connecting disk (2) are both provided with placement grooves (16), and the outer sides of the two placement grooves (16) are connected with threaded holes (17). The two threaded holes (17) extend to the upper surface and the lower surface of the second connecting disk (2) respectively. A threaded rod (18) is screwed in and connected to the threaded hole (17). A sliding rod (19) is provided on the upper end surface of the locking block (6). The sliding rod (19) has a diameter smaller than that of the threaded hole (17) and slides in the threaded hole (17). A first adsorption magnet (20) is provided at one end of the sliding rod (19) close to the threaded rod (18), and a second adsorption magnet (21) adsorbed to the first adsorption magnet (20) is provided at one end of the threaded rod (18) close to the sliding rod (19).

3. The flange with quick connection effect according to claim 1, characterized in that: An annular groove (24) is provided on the outer ring of the second connecting disk (2) on a side close to the first connecting disk (1), an annular block (25) connected to the annular groove (24) is provided on the inner ring of the second auxiliary disk (8), and a plurality of micro protrusions (26) are provided on the outer ring of the second auxiliary disk (8).

4. A flange with a quick connection effect according to claim 1, characterized in that: The groove (10) is arranged on the outer side surface of the first auxiliary disk (7); the position of the clamping plate (11) corresponds to the position of the through groove (9); the clamping plate (11) comprises a first support plate (27) and a second support plate (28); the first support plate (27) is arranged vertically on the inner side surface of the second auxiliary disk (8); the second support plate (28) is arranged horizontally on the inner side surface of the first support plate (27); a gap with the same thickness as the first auxiliary disk (7) is left between the second support plate (28) and the second auxiliary disk (8); and the elastic clamping block (12) is arranged on an end of the inner side surface of the second support plate (28) away from the first support plate (27).

5. A flange with a quick connection effect according to claim 4, characterized in that: A sliding groove (29) is provided at one end of the inner side surface of the second support plate (28) away from the first support plate (27), and the elastic clamping block (12) slides in the sliding groove (29). The elastic clamping block (12) and the sliding groove (29) are connected via a compression spring (30), and the side surface of the elastic clamping block (12) away from the first support plate (27) is an arc surface structure.

6. A flange with a quick connection effect according to claim 5, characterized in that: A pull rod (31) is connected to a surface of the elastic block (12) close to the compression spring (30), and the pull rod (31) penetrates the surface of the second support plate (28).

7. The flange with quick connection effect according to claim 1, characterized in that: The inner side surface of the first connection disk (1) is also provided with a plurality of connection holes (32), and a first magnet (33) is arranged in the connection hole (32). The inner side surface of the second connection disk (2) is provided with a plurality of connection rods (34) connected to the connection holes (32), and a second magnet (35) which is attracted to the first magnet (33) is arranged on the connection rods (34).

8. A quick connection method for flanges with quick connection effect according to any one of claims 1 to 7, characterized in that: The steps include: S1: Preliminary connection: When the flange is connected, the first connection plate (1) and the second connection plate (2) are brought into close contact with each other, the inner side of the auxiliary connection ring (3) is in contact with the connection gasket (4), and the positioning rod (15) is inserted into the positioning hole (14), and the connecting rod (34) is inserted into the connecting hole (32). The flange is initially fixed by using the principle of mutual adsorption between the first magnet (33) and the second magnet (35). Then, the threaded rod (18) is rotated to rotate in the threaded hole (17), and then the sliding rod (19) and the locking block (6) are pushed, so that the locking block (6) is pushed out of the placement groove (16) and locked into the locking groove (5), thereby realizing the initial fixed connection of the flange; S2: Completely fixed connection: After the flange is initially fixed, the clamping plate (11) will be smoothly inserted into the through groove (9), and then the second supporting plate (28) will protrude from the surface of the outer side surface of the first auxiliary plate (7), and then the second auxiliary plate (8) will be rotated, which will drive the clamping plate (11) to rotate in the through groove (9), so that the first auxiliary plate (7) will be clamped by using the gap between the second supporting plate (28) and the second auxiliary plate (8), and the second auxiliary plate (8) will drive the clamping plate (11) to rotate. During the rotation process, since the elastic card block (12) is in direct contact with the outer side surface of the first auxiliary disk (7) and is subjected to pressure, when the card plate (11) rotates, the elastic card block (12) will shrink into the sliding groove (29), and the compression spring (30) will also shrink. When the elastic card block (12) rotates to the groove (10), the elastic force reset effect of the compression spring (30) will be used to eject the elastic card block (12) into the groove (10), thereby achieving a fixed connection of the flange.

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