Coupling and assembly method thereof

Abstract

The present invention discloses a coupling, which includes a first half coupling, a second half coupling, a torque transmission mechanism, and an axial locker. The first half coupling and the second half coupling respectively include a first flange and a second flange, and the first flange and the second flange are circumferentially connected by the torque transmission mechanism. The torque transmission mechanism includes a plurality of first torque transmission parts provided on the first flange and a plurality of second torque transmission parts provided on the second flange, and the first torque transmission parts and the second torque transmission parts interact to transmit circumferential torque. In the locked state, the axial locker is connected to the torque transmission mechanism to axially lock the first flange and the second flange. The coupling transmission and locking structure proposed in this application improves the ability to transmit torque, further improves transmission efficiency, and avoids friction transmission and lateral displacement.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical transmission, and in particular to a coupling and an assembly method thereof. Background Art

[0002] Couplings are widely used in various mechanical transmission structures, especially rotating components, to transmit power and torque. Depending on the application scenario and functional objectives, couplings can be divided into two categories: flexible and rigid. Rigid couplings are generally used on rotating connecting shafts, rods, and other components that need to transmit high power and torque, such as power units, large electromechanical equipment, and gas turbines. To maintain structural strength and facilitate coupling installation and maintenance, most rigid couplings currently use the traditional bolt-flange connection method, where the flanges on both sides of the coupling are fixed by tightening bolts.

[0003] Although the traditional bolt-flange rigid coupling has a simple structure and is easy to manufacture and assemble, it has the following obvious defects:

[0004] 1. Part of the torque and power needs to be transmitted through friction, and the friction transmission method will cause a large degree of loss.

[0005] 2. Using pre-tightened bolts for fastening and connection requires more effort in design to select the appropriate bolt type and material. In addition, the bolt pre-tightening force and the requirements for bolt strength and friction are actually a contradiction: excessive pre-tightening force will cause the bolt strength to be unbearable, while too little pre-tightening force cannot meet the requirements of generating a certain friction force, greatly limiting the function of transmitting torque and power, and the risk of failure due to excessive bolt shear force is too high.

[0006] 3. It is easy to cause misalignment of the connecting shaft. Although it is possible to design certain spigots or grooves on the flange to achieve assembly alignment, under working conditions such as pulsed torque, vibration, and gravity bending, the shaft position is prone to lateral displacement, causing a certain degree of misalignment, which in turn causes serious problems in the rotor dynamics of the rotating parts.

[0007] Patent CN201730969U discloses a radially adjustable coupling comprising a chuck body, one end of which is connected to the driving shaft via an end cap sleeve and the other end to the driven shaft via a claw. The end cap sleeve secures the helical toothed wire to the chuck body. The drive bevel gear, connected to the claw by the helical toothed wire, drives the claw to secure the driven shaft. This solution still fails to overcome the drawbacks of the previously proposed bolt-flange rigid coupling.

[0008] In view of the above technical problems, the present invention is proposed. Summary of the Invention

[0009] The main purpose of the present invention is to provide a coupling and an assembly method thereof, which are used to solve the problems of low torque and power transmission efficiency of traditional bolt-flange rigid couplings, high requirements for bolt preload design, and easy misalignment of the connecting shaft.

[0010] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a coupling is proposed, comprising a first half-coupling, a second half-coupling, a torque transmission mechanism and an axial locker, the first half-coupling and the second half-coupling respectively comprising a first flange and a second flange, the first flange and the second flange being circumferentially connected by the torque transmission mechanism; the torque transmission mechanism comprising a plurality of first torque transmission parts arranged on the first flange and a plurality of second torque transmission parts arranged on the second flange, the first torque transmission parts and the second torque transmission parts interacting to transmit circumferential torque; in the locked state, the axial locker is operatively connected to the torque transmission mechanism to axially lock the first flange and the second flange.

[0011] Furthermore, the first torque transmission part and the second torque transmission part respectively define a first slot body and a second slot body for locking the axial locker. In the locked state, the axial locker is at least partially accommodated in the first slot body and the second slot body at the same time.

[0012] Furthermore, in the locked state, the first torque transmission portion and the second torque transmission portion are staggeredly engaged, so that the first slot body and the second slot body are adjacent to each other and are located on the same side of the first flange or the second flange.

[0013] Furthermore, the axial locker includes a locking block, which moves radially from a starting position along the first flange to a locking position. In the locked state, the locking block is at least partially located in the first slot body and the second slot body, locking the first flange and the second flange.

[0014] Furthermore, the axial locker also includes a connecting rod, which is movably connected to the locking block. The rotation of the connecting rod drives the locking block to move radially along the first flange.

[0015] Furthermore, the axial locker further comprises a locking disc body, the connecting rod is movably connected to the locking disc body, and the connecting rod rotates around a connection point with the locking disc body.

[0016] Furthermore, in the locked state, the locking disc body axially presses against the first half coupling, limiting the axial movement of the locker in a direction away from the first flange.

[0017] Furthermore, the first flange includes a first main disc body, which is circumferentially provided with a plurality of first torque transmission parts, and the second flange includes a second main disc body, which is circumferentially provided with a plurality of second torque transmission parts.

[0018] Furthermore, the first torque transmission part includes a plurality of first meshing teeth extending radially from the first main disc body; the second torque transmission part includes a plurality of second meshing teeth extending radially from the second main disc body.

[0019] Furthermore, the first torque transmission part also includes a first pawl extending from the first meshing tooth; the second torque transmission part also includes a second pawl extending from the second meshing tooth, and the first pawl and the second pawl are staggered and meshed.

[0020] Furthermore, the first claw includes a first axially extending section and a first radially extending section connected to each other, the space between the first axially extending section and the first radially extending section defines a first groove body, the first radially extending section forms a first groove surface, and the first axially extending section forms a third groove surface; the second claw includes a second axially extending section and a second radially extending section connected to each other, the space between the second axially extending section and the second radially extending section defines a second groove body, the second radially extending section forms a second groove surface, and the second axially extending section forms a fourth groove surface.

[0021] Furthermore, in the locked state, the axial locker at least partially abuts the first groove surface and the second groove surface, limiting the axial separation of the first flange and the second flange; and the axial locker at least partially abuts the third groove surface and the fourth groove surface, limiting the radial separation of the first flange and the second flange.

[0022] Furthermore, the first clamping claw and the second clamping claw also include a first outer edge end surface and a second outer edge end surface respectively. In the locked state, the locking disc body at least partially abuts against the first outer edge end surface and the second outer edge end surface, limiting the axial separation of the first flange and the second flange.

[0023] Furthermore, a guide structure is provided on the first flange, and the locking block moves radially along the first flange to reach the locking position through the guide structure.

[0024] Furthermore, the guide structure includes a plurality of first protrusions distributed on the first main disk body, the first protrusions are located in a radially inwardly extending fan-shaped area corresponding to the first main disk body and the first meshing teeth, and a first guide groove is formed between adjacent first protrusions, and the locking block moves from the initial position along the first guide groove.

[0025] Furthermore, the guide structure also includes a second protrusion distributed on the first meshing tooth, the second protrusion is connected to the first protrusion, and extends radially along the first meshing tooth to the first groove body, and a second guide groove is formed between adjacent second protrusions. The locking block moves from the initial position along the first guide groove and the second guide groove to reach the locking position.

[0026] Furthermore, the locking block is in a fan-shaped structure in the circumferential direction of the first flange.

[0027] Furthermore, the locking block is provided with a boss, which moves from a starting position along the guide structure to reach a locking position.

[0028] Furthermore, a second axial extension section is provided on the axial side of the first meshing tooth away from the first claw, and a partial area of ​​the second meshing tooth close to the first meshing tooth is staggeredly meshed with the second axial extension section to transmit circumferential torque.

[0029] Furthermore, a first engagement groove is provided between adjacent first torque transmission parts, and a second engagement groove is provided between adjacent second torque transmission parts. In the locked state, the first claw is at least partially inserted into the second engagement groove, and the second claw is at least partially inserted into the first engagement groove.

[0030] Furthermore, the axial locker includes a plurality of locking blocks, and the locking disc body drives the plurality of locking blocks to move from an initial position to a locking position, while resisting against a plurality of torque transmission mechanisms.

[0031] Furthermore, the first half coupling includes a first coupling, the first coupling is connected to the first flange, the first coupling is provided with a clamping platform, and the locking disc is sleeved on the first coupling. In the locked state, the clamping platform presses against the locking disc, limiting the movement of the locking disc away from the first flange.

[0032] Furthermore, the locking disc body is arranged along the circumference of the first connecting shaft, and spans the plurality of first meshing teeth and the plurality of second meshing teeth, and abuts against the plurality of first outer edge end surfaces and the plurality of second outer edge end surfaces.

[0033] Furthermore, it comprises a plurality of sets of axial lockers, which are sleeved on the first connecting shaft and fixedly connected to each other.

[0034] In order to achieve the above object, according to another aspect of the present invention, a method for assembling a coupling is proposed, comprising the following steps:

[0035] Step S1, interlacingly meshing the first torque transmission part and the second torque transmission part, and tightly contacting the end surfaces of the first flange and the second flange;

[0036] Step S2: Slide the locking disc in the axial locker onto the first connecting shaft, push the locking disc axially along the first flange, and drive the locking block along the first guide groove and the second guide groove to enter the first and second grooves;

[0037] Step S3: Use bolts to fix the locking disc body on the first connecting shaft.

[0038] The application of the technical solution of the present invention achieves at least the following beneficial effects:

[0039] 1. This application adopts a same-direction claw structure to bear torque, which greatly improves the coupling's torque bearing strength and significantly increases the upper limit of its torque transmission capacity;

[0040] 2. This application eliminates the power transmission loss caused by friction during torque transmission, further improving transmission efficiency;

[0041] 3. The claw structure used in this application avoids the misalignment of the connecting shaft caused by the lateral displacement of the bolt connection, ensuring working stability and alignment reliability under extreme working conditions;

[0042] 4. The coupling of the present application is relatively simple in composition and is easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0044] Figure 1 shows a cross-sectional view of a coupling according to an embodiment of the present invention;

[0045] Figure 2 Shows a front view of the first half coupling and a cross-sectional view along plane AA thereof according to an embodiment of the present invention;

[0046] Figure 3 Shows a front view of the second half coupling and a cross-sectional view of the BB plane thereof according to an embodiment of the present invention;

[0047] Figure 4 Shows a front view of an axial locker according to an embodiment of the present invention and a cross-sectional view along the CC plane thereof;

[0048] Figure 5 A front view of a locking block in an axial locker according to an embodiment of the present invention is shown.

[0049] The above drawings include the following reference numerals:

[0050] 100, first half coupling; 110, first flange; 111, first groove body; 1111, first groove surface; 1112, third groove surface; 1113, first outer edge end surface; 113, first meshing tooth; 1131, first axial extension section; 1132, first claw; 1133, first radial extension section; 1134, second protrusion; 1135, third axial extension section; 114, first meshing groove; 115, first main plate; 1151, first protrusion; 120, first coupling; 121, clamping table; 140, first A guide groove; 150, a second guide groove; 200, a second half coupling; 210, a second flange; 211, a second groove body; 2111, a second groove surface; 2112, a fourth groove surface; 2113, a second outer edge end surface; 213, a second meshing tooth; 2132, a second pawl; 2131, a second axial extension section; 2133, a second radial extension section; 214, a second meshing groove; 215, a second main disc body; 300, an axial locker; 320, a locking block; 321, a boss; 340, a connecting rod; 360, a locking disc body. DETAILED DESCRIPTION

[0051] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0052] The present invention is described in further detail below with reference to specific embodiments. These embodiments are not to be construed as limiting the scope of protection claimed by the present invention. The term "including" when used indicates the presence of a feature, but does not exclude the presence or addition of one or more other features; the terms "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for ease of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be construed as limiting the present invention; in addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance.

[0053] In this description, it should be noted that, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention. Furthermore, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0054] Example:

[0055] Common bolt-flange rigid couplings suffer from low torque and power transmission efficiency, high bolt preload requirements, and the tendency to cause misalignment of the connecting shaft. This application addresses these issues by employing a co-directional claw structure and achieving a locking connection of the flanges through an axial locker.

[0056] In order to achieve the above object, according to one aspect of the present invention, a coupling is proposed. Figure 1 As shown, the coupling comprises a first half coupling 100, a second half coupling 200, a torque transmission mechanism and an axial locker 300. In the locked state, the axial locker 300 is operatively connected to the torque transmission mechanism for axially locking the first half coupling 100 and the second half coupling 200.

[0057] Specifically, if Figure 2 and Figure 3 As shown, the first half coupling 100 and the second half coupling 200 respectively include a first flange 110 and a second flange 210, and the first flange 110 and the second flange 210 are connected circumferentially by a torque transmission mechanism. The torque transmission mechanism includes a plurality of first torque transmission parts arranged on the first flange 110 and a plurality of second torque transmission parts arranged on the second flange 210, and the first torque transmission parts and the second torque transmission parts interact with each other to transmit circumferential torque. In the locked state, the axial locker 300 is connected to the torque transmission mechanism to axially lock the first flange 110 and the second flange 210. The coupling structure adopted in this application eliminates the power transmission loss caused by friction during the torque transmission process, further improving the transmission efficiency.

[0058] Furthermore, the first and second torque transmission parts respectively define a first slot 111 and a second slot 211 for locking the axial locker. In the locked state, the axial locker is at least partially accommodated in both the first and second slots 111, 211. Simultaneously, the first and second torque transmission parts are interlaced and meshed, such that the first and second slots 111, 211 are adjacent and located on the same side of the first flange 110 or the second flange 210.

[0059] like Figure 4 As shown, the axial locker 300 includes a locking block 320, a connecting rod 340, and a locking disc 360. The connecting rod 340, the locking disc 360, and the locking block 320 are all movably connected, and the connecting rod 340 can rotate around the connection point with the locking disc 360, thereby driving the locking block 320 to move radially along the first flange. Specifically, the locking disc 360 drives multiple locking blocks 320 to move from an initial position along the radial direction of the first flange to a locked position, while resisting multiple torque transmission mechanisms. Figure 2 and Figure 3 In the locked state, the locking disc 360 axially abuts the first coupling half 100, limiting the axial movement of the locking disc 300 away from the first flange 110. The locking block 320 is at least partially located in the first groove 111 and the second groove 211, locking the first flange 110 and the second flange 210.

[0060] It should be noted that the axial locker used in the present application not only includes the method of this embodiment, but also can use methods such as interference fit to axially lock the first half coupling 100 and the second half coupling 200.

[0061] like Figure 2 As shown, the first flange 110 includes a first main disc body 115, and the first main disc body 115 is circumferentially provided with multiple first torque transmission parts. The first torque transmission parts include multiple first meshing teeth 113 radially extending from the first main disc body 115 and first claws 1132 extending from the first meshing teeth 113.

[0062] Specifically, the first claw 1132 includes a first axially extending section 1131 and a first radially extending section 1133 connected to each other. A third axially extending section 1135 is also provided on the axial side of the first engaging tooth 113 away from the first claw 1132. The space between the first axially extending section 1131 and the first radially extending section 1133 defines a first groove body 111. The first radially extending section 1133 forms a first groove surface 1111, and the first axially extending section 1131 forms a third groove surface 1112.

[0063] like Figure 3 As shown, the second flange 210 includes a second main body 215, which is circumferentially provided with a plurality of second torque transmission components. These components include a plurality of second meshing teeth 213 extending radially from the second main body 215, and second claws 2132 extending from the second meshing teeth 213. The second claws 2132 interlock with the first claws 1132. Portions of the second meshing teeth 213 proximate the first meshing teeth 113 interlock with the third axially extending segments 1135, transmitting circumferential torque.

[0064] Specifically, the second claw 2132 includes a second axially extending section 2131 and a second radially extending section 2133 connected to each other. The space between the second axially extending section 2131 and the second radially extending section 2133 defines a second groove body 211. The second radially extending section 2133 forms a second groove surface 2111. The second axially extending section 2131 forms a fourth groove surface 2112.

[0065] Combine Figure 2 and Figure 3As shown, a first engagement groove 114 is provided between adjacent first torque transmission parts, and a second engagement groove 214 is provided between adjacent second torque transmission parts. In the locked state, the first claw 1132 is at least partially inserted into the second engagement groove 214, and the second claw 2132 is at least partially inserted into the first engagement groove 114, thereby achieving staggered engagement between the second claw 2132 and the first claw 1132.

[0066] This application adopts a same-direction claw structure to bear torque, which greatly improves the torque-bearing strength of the coupling, significantly increases the upper limit of the torque transmission capacity, and eliminates the power transmission loss caused by friction during the torque transmission process, further improving the transmission efficiency.

[0067] Combine Figure 1 As shown, in the locked state, the axial locker 300 at least partially abuts the first groove surface 1111 and the second groove surface 2111 to limit the axial separation of the first flange 110 and the second flange 210; and the axial locker 300 at least partially abuts the third groove surface 1112 and the fourth groove surface 2112 to limit the radial separation of the first flange 110 and the second flange 210.

[0068] In addition, the first clamping claw 1132 and the second clamping claw 2132 also include a first outer edge end surface 1113 and a second outer edge end surface 2113, respectively. In the locked state, the locking disk body 360 at least partially abuts against the first outer edge end surface 1113 and the second outer edge end surface 2113 to limit the axial separation of the first flange 110 and the second flange 210.

[0069] like Figure 2 and Figure 4 As shown, a guide structure is provided on the first flange 110, for allowing the locking block 320 to move radially along the first flange 110 to reach the locking position through the guide structure. A boss 321 is provided on the locking block 320, and the boss 321 moves from the starting position along the guide structure to reach the locking position.

[0070] Specifically, the guide structure includes a plurality of first protrusions 1151 distributed on the first main disk body 115. The first protrusions 1151 are located in a radially inwardly extending fan-shaped area corresponding to the first main disk body 115 and the first meshing teeth 113. A first guide groove 140 is formed between adjacent first protrusions 1151, and the locking block 320 moves from the initial position along the first guide groove 140.

[0071] In addition, the guide structure also includes a second protrusion 1134 distributed on the first meshing tooth 113 . The second protrusion 1134 is connected to the first protrusion 1151 and extends radially along the first meshing tooth 113 to the first groove body 111 . A second guide groove 150 is formed between adjacent second protrusions 1134 .

[0072] Combine Figure 4 and Figure 5 As shown, the axial locker 300 includes a plurality of locking blocks 320, which are arranged in a fan-shaped structure in the circumferential direction of the first flange 110. Preferably, the axial locker 300 includes six locking blocks 320, and the six locking blocks 320 can reach the locking position at the same time.

[0073] In addition, a boss 321 is provided in the middle of the locking block 320. This boss 321 corresponds to the first guide groove 140 and the second guide groove 150. During assembly, the bosses 321 on each of the six locking blocks 320 sequentially enter the first guide groove 140 and the second guide groove 150, reaching the locked position. In the locked state, the locking blocks 320 circumferentially span adjacent first meshing teeth 113 of the first flange 110. The provision of a guide structure facilitates the synchronous movement of multiple locking blocks 320.

[0074] like Figure 1 As shown, the first half coupling 100 includes a first coupling 120, which is connected to the first flange 110. The first coupling 120 is provided with a clamping platform 121, and the locking disc body 360 is sleeved on the first coupling 120. In the locked state, the clamping platform 121 presses against the locking disc body 360, limiting the movement of the locking disc body 360 away from the first flange 110.

[0075] Preferably, the locking disc body 360 is circumferentially arranged along the first connecting shaft 120 , spans the plurality of first meshing teeth 113 and the plurality of second meshing teeth 213 , and abuts against the plurality of first outer edge end surfaces 1113 and the plurality of second outer edge end surfaces 2113 .

[0076] Further preferably, the coupling of the present application includes multiple sets of axial lockers 300, which are sleeved on the first coupling shaft 120 and fixedly connected to each other. Figure 4 As shown, a bolt structure is used to connect two sets of symmetrical axial lockers 300 and fix them on the first connecting shaft 120. The present application uses multiple sets of axial lockers, which facilitates multiple locking discs to push the locking blocks to the locking position, thereby achieving a good locking effect.

[0077] The bolt structure in this application only serves to fix the axial locker and does not bear torsional force, thereby avoiding the misalignment of the connecting shaft caused by the lateral displacement of the bolt connection, and ensuring the working stability and centering reliability under extreme working conditions.

[0078] In order to achieve the above object, according to another aspect of the present invention, a method for assembling a coupling is proposed, comprising the following three steps:

[0079] Step S1: Engage the first torque transmission part and the second torque transmission part in an interlaced manner, and tightly contact the end surfaces of the first flange 110 and the second flange 210;

[0080] Step S2: The locking disc 360 in the axial locker 300 is sleeved on the first connecting shaft 120 and pushed axially along the first flange 110. The connecting rod 340 drives the locking block 320 to move along the first guide groove 140 and the second guide groove 150 and enter the first groove 111 and the second groove 211.

[0081] Step S3: Use bolts to fix the locking disc 360 on the first connecting shaft 120.

[0082] In summary, from the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: 1. The present application adopts a method of using a same-direction claw structure to withstand torque, which greatly improves the torque-bearing strength of the coupling and significantly improves the upper limit of the torque transmission capacity; 2. The present application eliminates the power transmission loss caused by friction during the torque transmission process, and further improves the transmission efficiency; 3. The claw structure used in the present application avoids the misalignment of the connecting shaft caused by the lateral displacement of the bolt connection, and ensures the working stability and centering reliability under extreme working conditions; 4. The coupling composition of the present application is relatively simple and easy to install and disassemble.

[0083] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A coupling, characterized in that: The invention comprises a first half coupling (100), a second half coupling (200), a torque transmission mechanism and an axial locker (300), The first half coupling (100) and the second half coupling (200) respectively comprise a first flange (110) and a second flange (210), and the first flange (110) and the second flange (210) are circumferentially connected via the torque transmission mechanism; The torque transmission mechanism comprises a plurality of first torque transmission parts arranged on a first flange (110) and a plurality of second torque transmission parts arranged on a second flange (210), wherein the first torque transmission parts and the second torque transmission parts interact with each other to transmit circumferential torque; In the locked state, the axial locker (300) is operatively connected to the torque transmission mechanism to axially lock the first flange (110) and the second flange (210); The first torque transmission portion and the second torque transmission portion respectively define a first groove (111) and a second groove (211) for locking the axial locker (300); in a locked state, the axial locker (300) is at least partially accommodated in the first groove (111) and the second groove (211) at the same time; In the locked state, the first torque transmission portion and the second torque transmission portion are staggeredly engaged, so that the first groove body (111) and the second groove body (211) are adjacent to each other and are located on the same side of the first flange (110) or the second flange (210); The axial locker (300) includes a locking block (320), and the locking block (320) moves radially from a starting position along the first flange (110) to a locking position. In the locked state, the locking block (320) is at least partially located in the first groove (111) and the second groove (211), locking the first flange (110) and the second flange (210); The axial locker (300) further includes a connecting rod (340), the connecting rod (340) being movably connected to the locking block (320), and the connecting rod (340) rotating to drive the locking block (320) to move radially along the first flange (110); The axial locker (300) further comprises a locking disc body (360), the connecting rod (340) is movably connected to the locking disc body (360), and the connecting rod (340) rotates around a connection point with the locking disc body (360).

2. The coupling according to claim 1, characterized in that In the locked state, the locking disc body (360) axially presses against the first half coupling (100), limiting the axial locker (300) from moving in a direction away from the first flange (110).

3. The coupling according to claim 1, characterized in that The first flange (110) includes a first main disc body (115), and the first main disc body (115) is circumferentially provided with a plurality of first torque transmission parts. The second flange (210) includes a second main disc body (215), and the second main disc body (215) is circumferentially provided with a plurality of second torque transmission parts.

4. The coupling according to claim 3, characterized in that The first torque transmission part includes a plurality of first meshing teeth (113) radially extending from the first main disc body (115); the second torque transmission part includes a plurality of second meshing teeth (213) radially extending from the second main disc body (215).

5. The coupling according to claim 4, characterized in that: The first torque transmission part also includes a first pawl (1132) extending from the first meshing tooth (113); the second torque transmission part also includes a second pawl (2132) extending from the second meshing tooth (213), and the first pawl (1132) and the second pawl (2132) are staggered and meshed.

6. The coupling according to claim 5, characterized in that The first claw (1132) comprises a first axial extension section (1131) and a first radial extension section (1133) connected to each other, the space between the first axial extension section (1131) and the first radial extension section (1133) defining the first groove body (111), the first radial extension section (1133) forming a first groove surface (1111), and the first axial extension section (1131) forming a third groove surface (1112); the second claw (2132) comprises a second axial extension section (2131) and a second radial extension section (2133) connected to each other, the space between the second axial extension section (2131) and the second radial extension section (2133) defining the second groove body (211), the second radial extension section (2133) forming a second groove surface (2111), and the second axial extension section (2131) forming a fourth groove surface (2112).

7. The coupling according to claim 6, characterized in that In the locked state, the axial locker (300) at least partially abuts against the first groove surface (1111) and the second groove surface (2111), limiting the axial separation of the first flange (110) and the second flange (210); and the axial locker (300) at least partially abuts against the third groove surface (1112) and the fourth groove surface (2112), limiting the radial separation of the first flange (110) and the second flange (210).

8. The coupling according to claim 5 or 6, characterized in that: The first clamping claw (1132) and the second clamping claw (2132) further include a first outer edge end surface (1113) and a second outer edge end surface (2113), respectively. In the locked state, the locking disc body (360) at least partially abuts against the first outer edge end surface (1113) and the second outer edge end surface (2113), thereby limiting the axial separation of the first flange (110) and the second flange (210).

9. The coupling according to any one of claims 4 to 7, characterized in that: A guide structure is provided on the first flange (110), and the locking block (320) moves radially along the first flange (110) through the guide structure to reach a locking position.

10. The coupling according to claim 9, characterized in that The guide structure includes a plurality of first protrusions (1151) distributed on the first main disk body (115), the first protrusions (1151) being located in a radially inwardly extending fan-shaped area corresponding to the first main disk body (115) and the first meshing teeth (113), and a first guide groove (140) being formed between adjacent first protrusions (1151), and the locking block (320) moves from an initial position along the first guide groove (140).

11. The coupling according to claim 10, characterized in that The guide structure further includes a second protrusion (1134) distributed on the first meshing tooth (113), the second protrusion (1134) being connected to the first protrusion (1151) and extending radially along the first meshing tooth (113) to the first groove body (111), and a second guide groove (150) being formed between adjacent second protrusions (1134), and the locking block (320) moving from an initial position along the first guide groove (140) and the second guide groove (150) to reach a locking position.

12. The coupling according to claim 1 or 2, characterized in that: The locking block (320) is in a fan-shaped structure in the circumferential direction of the first flange (110).

13. The coupling according to claim 9, wherein: The locking block (320) is provided with a boss (321), and the boss (321) moves from a starting position along the guide structure to reach a locking position.

14. The coupling according to any one of claims 5 to 7, characterized in that: A third axial extension section (1135) is provided on the axial side of the first meshing tooth (113) away from the first claw (1132), and a partial area of ​​the second meshing tooth (213) close to the first meshing tooth (113) is staggeredly meshed with the third axial extension section (1135) to transmit circumferential torque.

15. The coupling according to any one of claims 5 to 7, characterized in that: A first engagement groove (114) is provided between adjacent first torque transmission parts, and a second engagement groove (214) is provided between adjacent second torque transmission parts. In a locked state, the first clasping claw (1132) is at least partially inserted into the second engagement groove (214), and the second clasping claw (2132) is at least partially inserted into the first engagement groove (114).

16. The coupling according to claim 1 or 2, characterized in that: The axial locker (300) comprises a plurality of locking blocks (320), and the locking disc body (360) drives the plurality of locking blocks (320) to move from an initial position to a locking position, while resisting against the plurality of torque transmission mechanisms.

17. The coupling according to claim 8, characterized in that The first half coupling (100) includes a first coupling shaft (120), the first coupling shaft (120) is connected to the first flange (110), the first coupling shaft (120) is provided with a clamping platform (121), the locking disc body (360) is sleeved on the first coupling shaft (120), and in a locked state, the clamping platform (121) presses against the locking disc body (360), limiting the locking disc body (360) from moving in a direction away from the first flange (110).

18. The coupling according to claim 17, wherein: The locking disc body (360) is arranged along the circumference of the first connecting shaft (120), and spans a plurality of the first meshing teeth (113) and a plurality of the second meshing teeth (213), and abuts against a plurality of the first outer edge end surfaces (1113) and a plurality of the second outer edge end surfaces (2113).

19. The coupling according to claim 17 or 18, characterized in that It comprises a plurality of groups of axial lockers (300), wherein the plurality of groups of axial lockers (300) are sleeved on the first connecting shaft (120), and the plurality of groups of axial lockers (300) are fixedly connected to each other.

20. A method for assembling a coupling, characterized in that: The following steps are involved: Step S1, interlacingly meshing the first torque transmission part and the second torque transmission part, and tightly contacting the end faces of the first flange (110) and the second flange (210); Step S2, sleeve the locking disc (360) in the axial locker (300) on the first connecting shaft (120), push the locking disc (360) axially along the first flange (110), and drive the locking block (320) along the first guide groove (140) and the second guide groove (150) to enter the first groove body (111) and the second groove body (211); Step S3: Using bolts to fix the locking disc (360) on the first connecting shaft (120).

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