Coupling and wind turbine

Abstract

This invention provides a coupling and a wind turbine generator. The coupling includes an intermediate pipe, a connecting flange, and a brake disc. The connecting flange is located on one side of the intermediate pipe, and a first diaphragm assembly is disposed between the connecting flange and the intermediate pipe. The brake disc is located on one side of the intermediate pipe, and a second diaphragm assembly is disposed between the brake disc and the intermediate pipe. A first limiting mechanism is provided between the connecting flange and the intermediate pipe to limit the intermediate pipe radially when the first diaphragm assembly breaks. And / or, a second limiting mechanism is provided between the brake disc and the intermediate pipe to limit the intermediate pipe radially when the second diaphragm assembly breaks. The coupling of this invention, by providing limiting mechanisms between the intermediate pipe and the brake disc and / or between the intermediate pipe and the connecting flange, effectively prevents the intermediate pipe from flying out between the brake disc and the connecting flange when the diaphragm of the coupling breaks.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation equipment technology, and in particular to a coupling and a wind turbine. Background Technology

[0002] With the increasing global demand for clean energy, wind power has been widely used as an important renewable energy source. A wind turbine typically consists of a rotor, gearbox, and generator, among other main components. The coupling is a crucial component connecting the gearbox and generator, used to transmit torque and achieve a mechanical connection between the two.

[0003] In existing wind turbine designs, couplings typically employ a diaphragm structure. This structure offers advantages such as the ability to compensate for axial, radial, and angular displacements, while also providing high torque transmission capacity and good dynamic performance. However, this design also presents certain safety hazards. When the coupling diaphragm breaks, the intermediate tube loses its original support and connection. Since wind turbines typically operate at high speeds, the intermediate tube cannot stop instantly after losing support and is easily thrown out. Once the intermediate tube flies out, the destructive force is immense, potentially damaging components inside the nacelle and the nacelle cover, or even falling to the ground. This not only leads to equipment damage and increased maintenance costs but also poses a serious threat to personnel safety, potentially causing an accident. Therefore, preventing the intermediate tube from flying out after the coupling diaphragm breaks has become a pressing issue in wind turbine design. Utility Model Content

[0004] The purpose of this invention is to provide a coupling and a wind turbine generator, aiming to solve the problem of how to prevent the intermediate tube from flying out after the coupling diaphragm breaks.

[0005] To solve the above-mentioned technical problems, the present invention provides a coupling, comprising:

[0006] Intermediate pipe;

[0007] A connecting flange is located on one side of the intermediate tube along its axial direction, and a first diaphragm assembly is disposed between the connecting flange and the intermediate tube.

[0008] A brake disc is located on the side of the intermediate tube away from the connecting flange, and a second diaphragm assembly is disposed between the brake disc and the intermediate tube.

[0009] Wherein, a first limiting mechanism is provided between the connecting flange and the intermediate tube, so as to limit the intermediate tube radially by the first limiting mechanism when the first diaphragm assembly breaks; and / or,

[0010] A second limiting mechanism is provided between the brake disc and the intermediate tube to limit the intermediate tube radially when the second diaphragm assembly breaks.

[0011] In some embodiments, the first limiting mechanism includes:

[0012] A limiting hole is provided on the connecting flange along the axial direction of the intermediate tube;

[0013] A limiting screw connector, the tail of which is inserted into the limiting hole and threadedly connected to the intermediate pipe;

[0014] A limiting sleeve is fitted between the limiting screw and the limiting hole, and the limiting sleeve and the limiting hole are in clearance fit.

[0015] In some embodiments, the limiting sleeve includes a shear sleeve and a rubber sleeve, wherein the shear sleeve is fitted onto the limiting screw, and the rubber sleeve is fitted onto the shear sleeve.

[0016] In some embodiments, a first annular boss is provided on the outer peripheral side of the end of the limiting sleeve away from the intermediate tube, and the first annular boss abuts against the side of the connecting flange away from the intermediate tube.

[0017] In some embodiments, a second annular boss is provided on the outer peripheral side of the shear sleeve at the end away from the intermediate tube, and the second annular boss abuts against the side of the rubber sleeve away from the intermediate tube.

[0018] In some embodiments, a threaded anti-shear pin sleeve and a connecting screw are provided between the intermediate tube and the first diaphragm assembly. The head of the connecting screw abuts against the side of the intermediate tube away from the first diaphragm assembly, and the tail of the connecting screw is threadedly connected to the end of the threaded anti-shear pin sleeve away from the first diaphragm assembly. The tail of the limiting screw is threadedly connected to the end of the threaded anti-shear pin sleeve near the first diaphragm assembly.

[0019] In some embodiments, a third annular boss is provided on the outer peripheral side of the threaded anti-shear pin sleeve. The third annular boss is located on the side of the first diaphragm assembly away from the intermediate tube, and the third annular boss abuts against the first diaphragm assembly and the limiting sleeve.

[0020] In some embodiments, the threaded anti-shear pin sleeve has an annular insert protruding on the end face near the limiting sleeve, and the limiting sleeve has an annular slot on the end face near the threaded anti-shear pin sleeve, with the annular insert inserted into the annular slot.

[0021] In some embodiments, the second limiting mechanism includes a bracket arranged circumferentially along the intermediate tube, the bracket being disposed on the surface of the brake disc near the intermediate tube, the bracket including a support portion extending into the intermediate tube.

[0022] In some embodiments, the bracket further includes a connecting portion disposed on the brake disc, wherein a receiving groove adapted to the shape of the connecting portion is provided on the surface of the brake disc near the intermediate tube, and the connecting portion is located within the receiving groove.

[0023] In some embodiments, the support portion is arranged to extend circumferentially along the intermediate tube.

[0024] In some embodiments, multiple supports are provided at intervals along the circumference of the intermediate tube.

[0025] In some embodiments, the support portion has an arc-shaped boss extending circumferentially along the intermediate tube on its surface near the central axis of the intermediate tube.

[0026] To achieve the above objectives, this utility model also provides a wind turbine generator, including the aforementioned coupling.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The coupling of this invention incorporates a limiting mechanism between the intermediate tube and the brake disc and / or between the intermediate tube and the connecting flange. When the diaphragm of the coupling breaks, this limiting mechanism can limit the intermediate tube radially, thereby effectively preventing the intermediate tube from flying out between the brake disc and the connecting flange. Attached Figure Description

[0029] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0030] Figure 1 This is a schematic diagram of the coupling structure in an embodiment of the present invention;

[0031] Figure 2 for Figure 1 A sectional view of the coupling;

[0032] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0033] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0034] Figure 5 for Figure 1 Another sectional view of the coupling.

[0035] Explanation of reference numerals in the accompanying drawings of this utility model:

[0036] Coupling 100, intermediate tube 1, first connecting ear 11, second connecting ear 12, connecting flange 2, first diaphragm assembly 3, brake disc 4, receiving groove 41, second diaphragm assembly 5, first limiting mechanism 6, limiting hole 61, limiting screw 62, limiting sleeve 63, anti-shear sleeve 631, rubber sleeve 632, first annular boss 633, second annular boss 634, annular slot 635, threaded anti-shear pin sleeve 64, third annular boss 641, annular insert 642, connecting screw 65, washer 66, gasket 67, second limiting mechanism 7, bracket 7a, support part 71, connecting part 72, arc-shaped boss 73, bracket connecting bolt 74.

[0037] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0041] This utility model provides a coupling, which is a transmission component. This coupling can be used in high-speed couplings of equipment such as wind turbine generators. The following description will use the application of this coupling in a wind turbine generator as an example. Figures 1 to 5 A preferred embodiment of the coupling provided by this utility model is shown.

[0042] Please see Figures 1 to 5 In some embodiments, the coupling 100 includes an intermediate tube 1, a connecting flange 2, a first diaphragm assembly 3, a brake disc 4, and a second diaphragm assembly 5. The connecting flange 2 is located on one side of the intermediate tube 1 along its axial direction, and the first diaphragm assembly 3 is disposed between the connecting flange 2 and the intermediate tube 1. The brake disc 4 is located on the side of the intermediate tube 1 away from the connecting flange 2, and the second diaphragm assembly 5 is disposed between the brake disc 4 and the intermediate tube 1. A first limiting mechanism 6 is provided between the connecting flange 2 and the intermediate tube 1 to limit the intermediate tube 1 radially when the first diaphragm assembly 3 breaks. And / or, a second limiting mechanism 7 is provided between the brake disc 4 and the intermediate tube 1 to limit the intermediate tube 1 radially when the second diaphragm assembly 5 breaks.

[0043] Specifically, coupling 100 is a diaphragm coupling, which is positioned between the gearbox and the generator. Coupling 100 connects the gearbox and the generator via brake disc 4 and connecting flange 2, respectively. Brake disc 4 and connecting flange 2 are located on opposite sides of the intermediate pipe 1 along its axial direction. Hereinafter, the axial direction of the intermediate pipe 1 is defined as the front-rear direction. The side of the intermediate pipe 1 closer to brake disc 4 is the front side of the intermediate pipe 1, and the side of the intermediate pipe 1 closer to connecting flange 2 is the rear side of the intermediate pipe 1.

[0044] A first diaphragm assembly 3 is disposed between the rear end of the intermediate tube 1 and the connecting flange 2, and a second diaphragm assembly 5 is disposed between the front end of the intermediate tube 1 and the brake disc 4. The first diaphragm assembly 3 and the second diaphragm assembly 5 typically include multiple diaphragms connected end-to-end. Optionally, please refer to [reference needed]. Figures 1 to 5 In some embodiments, the first diaphragm assembly 3 and the second diaphragm assembly 5 each include four diaphragms connected end to end, and both the first diaphragm assembly 3 and the second diaphragm assembly 5 are arranged in a rhomboid shape.

[0045] The following description uses an example where both the first diaphragm assembly 3 and the second diaphragm assembly 5 are diamond-shaped. Two bolts are provided at each of the two opposite corners of the first diaphragm assembly 3 to secure it to the front surface of the connecting flange 2. The other two corners of the first diaphragm assembly 3 are spaced apart from the connecting flange 2 in a front-to-back upward orientation. Similarly, two bolts are provided at each of the two opposite corners of the second diaphragm assembly 5 to secure it to the rear surface of the brake disc 4. The other two corners of the second diaphragm assembly 5 are spaced apart from the brake disc 4 in a front-to-back upward orientation.

[0046] The intermediate tube 1 is located between the first diaphragm assembly 3 and the second diaphragm assembly 5. The rear end of the intermediate tube 1 is disposed on the first diaphragm assembly 3, and the intermediate tube 1 and the first diaphragm assembly 3 can be fixedly connected by bolts or other means. Optionally, please refer to Figures 1 to 5 In some embodiments, two first connecting ears 11 are protruding on the outer peripheral side of the rear end of the intermediate tube 1. The two first connecting ears 11 are fixedly connected to the two corners of the first diaphragm assembly 3 (i.e., the two corners between the first diaphragm assembly 3 and the connecting flange 2) by bolts.

[0047] Similarly, the front end of the intermediate tube 1 is disposed on the second diaphragm assembly 5, and the intermediate tube 1 and the second diaphragm assembly 5 can be fixedly connected by means of bolts or other methods. Optionally, please refer to Figures 1 to 5 In some embodiments, two second connecting ears 12 are protruding on the outer peripheral side of the front end of the intermediate tube 1. The two second connecting ears 12 are fixedly connected to the two corners of the second diaphragm assembly 5 (i.e., the two corners between the second diaphragm assembly 5 and the brake disc 4) by bolts. The following will be described with the example of the intermediate tube 1 being fixedly connected to the first diaphragm assembly 3 by the two first connecting ears 11 and the intermediate tube 1 being fixedly connected to the second diaphragm assembly 5 by the two second connecting ears 12.

[0048] The coupling 100 is provided with a limiting mechanism (i.e., a first limiting mechanism 6 or a second limiting mechanism 7) to prevent the intermediate tube from flying off the coupling for use in a wind turbine. The coupling 100 is provided with a first limiting mechanism 6 and / or a second limiting mechanism 7. The coupling 100 may only have a first limiting mechanism 6 and not have a second limiting mechanism 7; the coupling 100 may also only have a second limiting mechanism 7 and not have a first limiting mechanism 6; or the coupling 100 may have both a first limiting mechanism 6 and a second limiting mechanism 7.

[0049] When a first limiting mechanism 6 is provided between the rear end of the intermediate tube 1 and the connecting flange 2, if the diaphragm of the first diaphragm assembly 3 breaks, the first limiting mechanism 6 can limit the intermediate tube 1 radially, so that the intermediate tube 1 will not tilt or deviate from the center of rotation after the first diaphragm (i.e., the diaphragm of the first diaphragm assembly 3) breaks, preventing the intermediate tube 1 from flying out between the brake disc 4 and the connecting flange 2. When a second limiting mechanism 7 is provided between the front end of the intermediate tube 1 and the brake disc 4, if the diaphragm of the second diaphragm assembly 5 breaks, the second limiting mechanism 7 can limit the intermediate tube 1 radially, so that the intermediate tube 1 will not tilt or deviate from the center of rotation after the second diaphragm (i.e., the diaphragm of the second diaphragm assembly 5) breaks, preventing the intermediate tube 1 from flying out between the brake disc 4 and the connecting flange 2. The following will be an example of coupling 100 having both a first limiting mechanism 6 and a second limiting mechanism 7.

[0050] The coupling 100 of this invention has a limiting mechanism between the intermediate tube 1 and the brake disc 4 and / or between the intermediate tube 1 and the connecting flange 2. When the diaphragm of the coupling 100 breaks, the limiting mechanism can limit the intermediate tube 1 radially, thereby effectively preventing the intermediate tube 1 from flying out between the brake disc 4 and the connecting flange 2.

[0051] The first limiting mechanism 6 is located between the rear end of the intermediate pipe 1 and the connecting flange 2. The specific arrangement of the first limiting mechanism 6 can be determined according to actual conditions. For example, the first limiting mechanism 6 can be a bracket extending into the rear end of the intermediate pipe 1, or a structure involving a limiting pin and a limiting hole. Optionally, please refer to... Figures 1 to 5 In some embodiments, the first limiting mechanism 6 includes a limiting hole 61, a limiting screw connector 62, and a limiting sleeve 63. The limiting hole 61 is disposed through the connecting flange 2 along the axial direction of the intermediate tube 1. The tail of the limiting screw connector 62 is inserted into the limiting hole 61 and threadedly connected to the intermediate tube 1. The limiting sleeve 63 is sleeved between the limiting screw connector 62 and the limiting hole 61, and the limiting sleeve 63 and the limiting hole 61 are clearance fit.

[0052] Specifically, a limiting hole 61 is provided through the connecting flange 2. A limiting bolt 62, such as a bolt arranged along the front-rear direction, is provided. The tail of the limiting bolt 62 passes through the connecting flange 2 from the rear and through the limiting hole 61, and is threadedly connected to the rear end of the intermediate tube 1. A limiting sleeve 63 is fitted onto the limiting bolt 62, with its front end extending into the limiting hole 61, and a clearance fit between the limiting sleeve 63 and the limiting hole 61. Thus, when the first diaphragm assembly 3 breaks, the outer wall of the limiting sleeve 63 abuts against the inner wall of the limiting hole 61, allowing the connecting flange 2 to support the rear end of the intermediate tube 1 through the first limiting mechanism 6. This prevents the intermediate tube 1 from tilting or deviating from the rotation center after the first diaphragm breaks, and prevents the intermediate tube 1 from flying out between the brake disc 4 and the connecting flange 2. The first limiting mechanism 6 can be a single unit; alternatively, multiple first limiting mechanisms 6 can be provided at intervals along the circumference of the intermediate tube 1.

[0053] The specific configuration of the limiting sleeve 63 can be set according to the actual situation. For example, the limiting sleeve 63 can be a metal sleeve or an elastic sleeve, etc. Optionally, please refer to Figures 1 to 5 In some embodiments, the limiting sleeve 63 includes a shear sleeve 631 and a rubber sleeve 632. The shear sleeve 631 is fitted onto the limiting screw connector 62, and the rubber sleeve 632 is fitted onto the shear sleeve 631.

[0054] Specifically, the shear sleeve 631 is typically a metal sleeve, which ensures the structural strength of the limiting sleeve 63. The limiting sleeve 63 is covered with a rubber sleeve 632, allowing the limiting sleeve 63 to abut against the inner wall of the limiting hole 61 through the rubber sleeve 632. The rubber sleeve 632 acts as an elastic buffer, preventing wear on the limiting hole 61 of the connecting flange 2 caused by the limiting sleeve 63. The following description uses the limiting sleeve 63, including the shear sleeve 631 and the rubber sleeve 632, as an example.

[0055] Optionally, please refer to Figures 1 to 5 In some embodiments, a first annular boss 633 is provided on the outer peripheral side of the end of the limiting sleeve 63 away from the intermediate tube 1, and the first annular boss 633 abuts against the side of the connecting flange 2 away from the intermediate tube 1.

[0056] Specifically, the front end of the limiting sleeve 63 is located inside the limiting hole 61, and the rear end of the limiting sleeve 63 is located outside the limiting hole 61 and on the rear side of the connecting flange 2. A first annular boss 633 extending circumferentially along the outer periphery of the rear end of the limiting sleeve 63 is protruding from this boss. The first annular boss 633 is located outside the limiting hole 61 and abuts against the rear surface of the connecting flange 2. Thus, through the abutting engagement between the first annular boss 633 and the connecting flange 2, the limiting sleeve 63 and the connecting flange 2 can be positioned in a front-to-back upward orientation. The first annular boss 633 can be provided on the shear sleeve 631 or the rubber sleeve 632. Optionally, please refer to [reference needed]. Figures 1 to 5 In some embodiments, the first annular boss 633 is disposed on the rubber sleeve 632.

[0057] Optionally, please refer to Figures 1 to 5 In some embodiments, a second annular boss 635 is provided on the outer peripheral side of the shear sleeve 631 away from the intermediate tube 1, and the second annular boss 635 abuts against the side of the rubber sleeve 632 away from the intermediate tube 1.

[0058] Specifically, the front end of the shear sleeve 631 is located inside the rubber sleeve 632, and the rear end of the shear sleeve 631 is located outside the rubber sleeve 632 and on the rear side of the rubber sleeve 632. A second annular boss 635 extending circumferentially along the outer peripheral side of the rear end of the shear sleeve 631 is provided. The second annular boss 635 is located outside the rubber sleeve 632 and abuts against the rear end face of the rubber sleeve 632. In this way, the abutting cooperation between the second annular boss 635 and the rubber sleeve 632 can realize the installation and positioning of the shear sleeve 631 and the rubber sleeve 632 in the front-back upward direction.

[0059] The specific position of the threaded connection between the intermediate tube 1 and the limiting screw connector 62 can be set according to the actual situation. For example, there are two first limiting mechanisms 6, and the limiting screw connectors 62 of the two first limiting mechanisms 6 are respectively threadedly connected to the two first connecting lugs 11 of the intermediate tube 1. Optionally, please refer to Figures 1 to 5 In some embodiments, a threaded anti-shear pin sleeve 64 and a connecting screw 65 are provided between the intermediate tube 1 and the first diaphragm assembly 3. The head of the connecting screw 65 abuts against the side of the intermediate tube 1 away from the first diaphragm assembly 3, and the tail of the connecting screw 65 is threadedly connected to the end of the threaded anti-shear pin sleeve 64 away from the first diaphragm assembly 3. The tail of the limiting screw 62 is threadedly connected to the end of the threaded anti-shear pin sleeve 64 near the first diaphragm assembly 3.

[0060] Specifically, the threaded shear pin sleeve 64 extends in a front-to-back direction, with its front end passing through the first connecting lug 11 and its rear end passing through the corner of the first diaphragm assembly 3. The connecting screw 65 can be a bolt, etc., with its tail end installed from the front into the front end of the threaded shear pin sleeve 64, forming a threaded engagement with the front end of the threaded shear pin sleeve 64. A washer 66, etc., can be provided between the head of the connecting screw 65 and the first connecting lug 11. The tail end of the limiting screw 62 extends into the rear end of the threaded shear pin sleeve 64, forming a threaded engagement with the rear end of the threaded shear pin sleeve 64.

[0061] Further, please refer to Figures 1 to 5 In some embodiments, a third annular boss 641 is provided on the outer peripheral side of the threaded anti-shear pin sleeve 64. The third annular boss 641 is located on the side of the first diaphragm assembly 3 away from the intermediate tube 1, and the third annular boss 641 abuts against the first diaphragm assembly 3 and the limiting sleeve 63.

[0062] Specifically, a third annular boss 641 extending circumferentially along the threaded shear pin sleeve 64 is provided on the outer peripheral side of the rear end of the threaded shear pin sleeve 64. The third annular boss 641 is located behind the first diaphragm assembly 3 and in front of the limiting sleeve 63. The front surface of the third annular boss 641 abuts against the rear surface of the first diaphragm assembly 3, and the rear surface of the third annular boss 641 abuts against the front end surface of the limiting sleeve 63. Through the abutting engagement between the third annular boss 641, the first diaphragm assembly 3, and the limiting sleeve 63, the installation and positioning of the first diaphragm assembly 3, the limiting sleeve 63, and the threaded shear pin sleeve 64 in a front-rear-upward direction can be achieved. A gasket 67 or similar material can be provided between the third annular boss 641 and the first diaphragm assembly 3. The third annular boss 641 can abut against the shear sleeve 631 or the rubber sleeve 632. Optionally, please refer to [reference needed]. Figures 1 to 5 In some embodiments, the third annular boss 641 abuts against the front side of the shear sleeve 631 and the rubber sleeve 632.

[0063] Optionally, please refer to Figures 1 to 5 In some embodiments, the threaded anti-shear pin sleeve 64 has an annular insert 642 protruding on the end face near the limiting sleeve 63, and the limiting sleeve 63 has an annular slot 636 on the end face near the threaded anti-shear pin sleeve 64, with the annular insert 642 inserted into the annular slot 636.

[0064] Specifically, the rear end face of the threaded shear pin sleeve 64 is provided with an annular insert 642 extending circumferentially along the threaded shear pin sleeve 64, and the front end face of the limiting sleeve 63 is provided with an annular slot 636 extending circumferentially along the limiting sleeve 63. The shape of the annular slot 636 is usually adapted to the shape of the annular insert 642. The annular insert 642 is inserted into the annular slot 636. In this way, the installation and positioning between the threaded shear pin sleeve 64 and the limiting sleeve 63 can be achieved through the insertion and engagement between the annular insert 642 and the annular slot 636. The annular slot 636 can be provided on the shear sleeve 631 or the rubber sleeve 632. Optionally, please refer to [reference needed]. Figures 1 to 5 In some embodiments, an annular slot 636 is disposed on the shear sleeve 631.

[0065] The second limiting mechanism 7 is located between the front end of the intermediate tube 1 and the brake disc 4. The specific setting of the second limiting mechanism 7 can be set according to the actual situation. For example, the second limiting mechanism 7 can be a bracket that extends into the front end of the intermediate tube 1, or a matching structure of a limiting pin and a limiting hole, etc. The second limiting mechanism 7 can also adopt the same structural design as the first limiting mechanism 6.

[0066] Optionally, please refer to Figures 1 to 5 In some embodiments, the second limiting mechanism 7 includes a bracket 7a arranged circumferentially along the intermediate tube 1, the bracket 7a being disposed on the surface of the brake disc 4 near the intermediate tube 1, and the bracket 7a including a support portion 71 extending into the intermediate tube 1.

[0067] Specifically, the bracket 7a is disposed on the rear surface of the brake disc 4. The rear end of the bracket 7a is inserted into the front end of the intermediate tube 1 to form a support portion 71. When the diaphragm does not break, the support portion 71 and the intermediate tube 1 are normally in clearance fit. When the second diaphragm assembly 5 breaks, the support portion 71 abuts against the inner wall of the front end of the intermediate tube 1, so that the bracket 7a supports the front end of the intermediate tube 1, so that the intermediate tube 1 will not tilt or deviate from the center of rotation after the second diaphragm breaks, and prevent the intermediate tube 1 from flying out between the brake disc 4 and the connecting flange 2.

[0068] There are various specific arrangements for the support 7a to be arranged circumferentially along the intermediate tube 1. For example, the support 7a can be arranged in a cylindrical shape extending circumferentially along the intermediate tube 1; multiple supports 7a can also be arranged at intervals along the circumference of the intermediate tube 1. Optionally, please refer to... Figures 1 to 5 In some embodiments, multiple supports 7a are evenly spaced along the circumference of the intermediate tube 1. There may be one, two, three, four, five, or more supports 7a; the following description will use four supports 7a as an example.

[0069] The bracket 7a can be fixed to the rear surface of the brake disc 4 by means of bolts or other methods. Optionally, please refer to [link / reference]. Figures 1 to 5 In some embodiments, the bracket 7a further includes a connecting portion 72 disposed on the brake disc 4. The surface of the brake disc 4 near the intermediate tube 1 is provided with a receiving groove 41 that matches the shape of the connecting portion 72, and the connecting portion 72 is located in the receiving groove 41.

[0070] Specifically, the bracket 7a includes a support portion 71 and a connecting portion 72 connected together. The rear surface of the brake disc 4 is provided with a receiving groove 41 that matches the shape of the connecting portion 72. The connecting portion 72 is disposed in the receiving groove 41. Thus, through the cooperation between the connecting portion 72 and the receiving groove 41, the bracket 7a can be installed and positioned on the brake disc 4. The bracket 7a is an L-shaped bracket, and the connecting portion 72 can be arranged in a fan shape or other shapes.

[0071] Optionally, please refer to Figures 1 to 5 In some embodiments, the support portion 71 extends circumferentially along the intermediate tube 1. The support portion 71 is arranged in an arcuate plate shape so that the shape of the support portion 71 matches the shape of the intermediate tube 1, so that when the second diaphragm assembly 5 experiences diaphragm breakage, the support portion 71 provides better support for the front end of the intermediate tube 1.

[0072] Further, please refer to Figures 1 to 5 In some embodiments, the support portion 71 has an arc-shaped boss 73 extending circumferentially along the intermediate tube 1 on its surface near the central axis of the intermediate tube 1.

[0073] Specifically, the rear end of the support part 71 is provided with an arc-shaped protrusion 73. When the second diaphragm assembly 5 breaks, the arc-shaped protrusion 73 on the support part 71 abuts against the inner wall of the front end of the intermediate tube 1, so that the support part 71 of the bracket 7a can provide better support for the front end of the intermediate tube 1.

[0074] On the gearbox side of the coupling 100, four brackets 7a are installed on the brake disc 4 and inserted into the intermediate tube 1 to prevent the intermediate tube 1 from deviating from the center of rotation and flying out due to excessive centrifugal force when it rotates after the second diaphragm assembly 5 breaks. On the generator side of the coupling 100, two shear sleeves 631 + rubber sleeves 632 are installed diagonally on the first diaphragm assembly 3 to prevent the intermediate tube 1 from deviating from the center of rotation and flying out due to excessive centrifugal force when it rotates after the first diaphragm assembly 3 breaks. Compared to installing brackets 7a on both the gearbox and generator sides, this arrangement (with brackets 7a on one side and shear sleeves 631 + rubber sleeves 632 on the other side) facilitates the installation of the intermediate tube 1 and has better installation processability. Compared to installing shear sleeves 631 + rubber sleeves 632 on both the gearbox and generator sides, this arrangement can avoid the torque impact caused by the rigid connection of the shear sleeves 631 after the diaphragm breaks.

[0075] This utility model also provides a wind turbine generator, which includes a coupling. Since the coupling adopts the technical solution of the above embodiment, it has the beneficial effects brought about by the technical solution of the above embodiment.

[0076] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A coupling, characterized in that, include: Intermediate pipe; A connecting flange is located on one side of the intermediate tube along its axial direction, and a first diaphragm assembly is disposed between the connecting flange and the intermediate tube. A brake disc is located on the side of the intermediate tube away from the connecting flange, and a second diaphragm assembly is disposed between the brake disc and the intermediate tube. Wherein, a first limiting mechanism is provided between the connecting flange and the intermediate tube, so as to limit the intermediate tube radially by the first limiting mechanism when the first diaphragm assembly breaks; and / or, A second limiting mechanism is provided between the brake disc and the intermediate tube to limit the intermediate tube radially when the second diaphragm assembly breaks.

2. The coupling according to claim 1, characterized in that, The first limiting mechanism includes: A limiting hole is provided on the connecting flange along the axial direction of the intermediate tube; A limiting screw connector, the tail of which is inserted into the limiting hole and threadedly connected to the intermediate pipe; A limiting sleeve is fitted between the limiting screw and the limiting hole, and the limiting sleeve and the limiting hole are in clearance fit.

3. The coupling according to claim 2, characterized in that, The limiting sleeve includes a shear sleeve and a rubber sleeve, wherein the shear sleeve is fitted onto the limiting screw connector, and the rubber sleeve is fitted onto the shear sleeve; and / or, The limiting sleeve has a first annular boss protruding on the outer peripheral side of the end away from the intermediate tube, and the first annular boss abuts against the side of the connecting flange away from the intermediate tube.

4. The coupling according to claim 3, characterized in that, A second annular protrusion is provided on the outer peripheral side of the shear sleeve away from the intermediate tube, and the second annular protrusion abuts against the side of the rubber sleeve away from the intermediate tube.

5. The coupling according to claim 2, characterized in that, A threaded anti-shear pin and a connecting screw are provided between the intermediate tube and the first diaphragm assembly. The head of the connecting screw abuts against the side of the intermediate tube away from the first diaphragm assembly, and the tail of the connecting screw is threadedly connected to the end of the threaded anti-shear pin away from the first diaphragm assembly. The tail of the limiting screw is threadedly connected to the end of the threaded anti-shear pin close to the first diaphragm assembly.

6. The coupling according to claim 5, characterized in that, A third annular boss protrudes from the outer peripheral side of the threaded anti-shear pin sleeve. The third annular boss is located on the side of the first diaphragm assembly away from the intermediate tube, and abuts against the first diaphragm assembly and the limiting sleeve; and / or, The threaded anti-shear pin sleeve has an annular insert protruding on its end face near the limiting sleeve, and the limiting sleeve has an annular slot on its end face near the threaded anti-shear pin sleeve, with the annular insert inserted into the annular slot.

7. The coupling according to any one of claims 1-6, characterized in that, The second limiting mechanism includes a bracket arranged circumferentially along the intermediate tube, the bracket being disposed on the surface of the brake disc near the intermediate tube, and the bracket including a support portion extending into the intermediate tube.

8. The coupling according to claim 7, characterized in that, The bracket also includes a connecting part disposed on the brake disc, and the surface of the brake disc near the intermediate tube is provided with a receiving groove that matches the shape of the connecting part, and the connecting part is located in the receiving groove; And / or, The support portion extends circumferentially along the intermediate tube; and / or, The brackets are arranged in multiple intervals along the circumference of the intermediate tube.

9. The coupling according to claim 8, characterized in that, The support portion has an arc-shaped boss that extends circumferentially along the intermediate tube on its surface near the central axis of the intermediate tube.

10. A wind turbine generator, characterized in that, Includes the coupling as described in any one of claims 1-9.

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