Diaphragm type coupling

Abstract

The utility model discloses a diaphragm type coupler which comprises two half coupler sets, a diaphragm set and a plurality of buffering assemblies, the two half coupler sets are the same in structure, the diaphragm set is fixedly arranged between the two half coupler sets, and the buffering assemblies are distributed on the outer side of the diaphragm set in the circumferential direction. And the multiple buffer assemblies are embedded into the two half coupling sets. When in use, the buffer component is used for reducing the impact on the diaphragm group, has certain axial compensation capability, assists the diaphragm group in compensating the axial deviation of the shaft, and prevents the diaphragm from being damaged due to overlarge load.

Description

Technical Field

[0001] The utility model relates to the field of couplings, in particular to a diaphragm type coupling. Background Art

[0002] The working environment of wind turbines is generally harsh, so each component of the wind turbine needs to have a high impact resistance. The generator, gearbox and impeller of the existing wind turbine are connected by a diaphragm coupling. Since the shaft system of the wind turbine may move axially when the wind turbine is working, the diaphragm of the diaphragm coupling is subjected to a large load, resulting in reduced performance and service life of the diaphragm, or even damage. Therefore, a diaphragm coupling with a more reasonable structure is urgently needed to solve the problem of reduced performance of the diaphragm due to impact. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a diaphragm coupling which, when used, reduces the impact on the diaphragm group through a buffer component and at the same time has a certain axial compensation capability to assist the diaphragm group in compensating for the axial deviation of the shaft and prevent the diaphragm from being damaged by excessive load.

[0004] The purpose of the utility model is mainly achieved through the following technical solutions:

[0005] A diaphragm coupling comprises two groups of half-coupling groups, a diaphragm group and a plurality of buffer components. The two groups of half-coupling groups have the same structure. The diaphragm group is fixedly arranged between the two groups of half-coupling groups. A plurality of the buffer components are circumferentially arranged on the outside of the diaphragm group, and a plurality of the buffer components are embedded in the two groups of half-coupling groups.

[0006] During the operation of the wind turbine, the inventor found that the shaft system of the wind turbine may have an instantaneous peak load during operation, and the shaft system has a large axial movement, which causes the diaphragm of the diaphragm coupling to be subjected to a large impact, which has a certain impact on the performance and service life of the diaphragm. To this end, in the present application, the inventor arranges a number of buffer components on the outer side of the diaphragm group to reduce the impact on the diaphragm group, improve the bearing capacity of the coupling, and prevent the diaphragm group from being subjected to excessive impact and causing performance degradation. At the same time, the buffer component also has a certain axial compensation ability, which can assist the diaphragm group in compensating for the axial deviation of the shaft, so that the compensation ability of the coupling is stronger. Specifically, when the present application is actually used, the buffer component is arranged according to the shape of the diaphragm group. If the diaphragm group is a polygonal shape such as a hexagon or an octagon, the buffer component is evenly arranged between the two corners of the diaphragm group. If the diaphragm group is circular, the buffer component is evenly arranged on the outside of the diaphragm group.

[0007] Furthermore, the half coupling group and the diaphragm group are provided with through holes of the same size, and the half coupling group and the diaphragm group are fixedly connected by long bolts and nuts, and the long bolts pass through the through holes of the half coupling group and the diaphragm group.

[0008] Furthermore, a blind hole is provided on one side of the half coupling assembly facing the diaphragm assembly, the number of the blind holes is the same as the number of the buffer components, and a plurality of the buffer components are arranged in a one-to-one correspondence in the plurality of blind holes.

[0009] Furthermore, the buffer component is a bellows.

[0010] Furthermore, the buffer component is a rubber block.

[0011] Furthermore, the buffer assembly includes two rubber pads and a metal block, the two rubber pads are respectively embedded in the two groups of half-coupling groups, grooves are provided on the opposite sides of the two rubber pads, and the two ends of the metal block are respectively embedded in the two grooves.

[0012] In summary, compared with the prior art, the utility model has the following beneficial effects: the utility model arranges a plurality of buffer components axially on the outer side of the diaphragm group, and the buffer components assist the diaphragm group in compensating for the axial deviation of the shaft, and at the same time plays a buffering role when the shaft moves axially, thereby preventing the diaphragm group from being subjected to a large impact and causing the performance of the diaphragm group to decline or be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0014] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0015] Figure 2 This is a distribution diagram of through holes and blind holes in an embodiment of the utility model;

[0016] Figure 3 This is another position distribution diagram of the through holes and blind holes in the embodiment of the utility model;

[0017] Figure 4 This is another position distribution diagram of the through holes and blind holes in the embodiment of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the buffer assembly of an embodiment of the utility model;

[0019] Figure 6 It is another structural schematic diagram of the buffer assembly according to an embodiment of the utility model.

[0020] The names corresponding to the figure marks in the accompanying drawings are: 1. half-coupling assembly; 2. diaphragm assembly; 3. buffer assembly; 4. through hole; 5. long bolt; 6. nut; 7. blind hole; 8. rubber pad; 9. metal block. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0022] Example:

[0023] like Figure 1 As shown, a diaphragm coupling comprises two groups of half-coupling groups 1, a diaphragm group 2 and a plurality of buffer components 3. The two groups of half-coupling groups 1 have the same structure. The diaphragm group 2 is fixedly arranged between the two groups of half-coupling groups 1. The plurality of buffer components 3 are circumferentially arranged on the outside of the diaphragm group 2, and the plurality of buffer components 3 are embedded in the two groups of half-coupling groups 1.

[0024] During the operation of the wind turbine, the inventor discovered that the shaft system of the wind turbine may experience instantaneous peak loads during operation, and the shaft system may experience large axial movement, which may cause the diaphragm of the diaphragm coupling to be subjected to a large impact, causing a certain impact on the performance and service life of the diaphragm. To this end, in the present embodiment, the inventor arranges a number of buffer components 3 circumferentially on the outer side of the diaphragm group 2 to reduce the impact on the diaphragm group 2, improve the bearing capacity of the coupling, and prevent the diaphragm group 2 from being subjected to excessive impact and causing performance degradation. At the same time, the buffer component 3 also has a certain axial compensation capability, which can assist the diaphragm group 2 in compensating for the axial deviation of the shaft, making the compensation capability of the coupling stronger. Specifically, in actual application of the present embodiment, the buffer component 3 is arranged according to the shape of the diaphragm group 2. If the diaphragm group 2 is a polygon such as a hexagon or an octagon, the buffer component 3 is evenly arranged between the two corners of the diaphragm group 2. If the diaphragm group 2 is circular, the buffer component 3 is evenly arranged on the outside of the diaphragm group 2. More specifically, in the present embodiment, if Figure 2 As shown, the diaphragm group 2 is circular, and the buffer components 3 are evenly arranged on the outside of the diaphragm group 2.

[0025] Furthermore, the half-coupling group 1 and the diaphragm group 2 are provided with through holes 4 of the same size, and the half-coupling group 1 and the diaphragm group 2 are fixedly connected by long bolts 5 and nuts 6, and the long bolts 5 pass through the through holes 4 of the half-coupling group 1 and the diaphragm group 2. In this embodiment, the half-coupling group 1 and the diaphragm group 2 are fixed by long bolts 5, and the bolt column of the long bolts 5 passes through the through holes 4 of the half-coupling group 1 and the diaphragm group 2, and is threadedly connected with the nuts 6 after passing through the two groups of half-coupling groups 1 and the diaphragm group 2, thereby completing the fixation. Optionally, in order to make the fixation more firm and prevent the long bolts 5 and the nuts 6 from falling off due to the vibration of the coupling, a gasket is provided between the nuts 6 and the half-coupling group 1.

[0026] Furthermore, a blind hole 7 is provided on the side of the half-coupling group 1 facing the diaphragm group 2, and the number of the blind holes 7 is the same as the number of the buffer components 3, and a plurality of the buffer components 3 are arranged in a one-to-one correspondence in the plurality of blind holes 7. In the present embodiment, two groups of half-coupling groups 1 are provided with relative blind holes 7, and the buffer components 3 are arranged in the blind holes 7. The number of the buffer components 3 may be equal to the number of the long bolts 5, or may be more or less than the number of the long bolts 5. At the same time, the buffer components 3 may be staggered with the long bolts 5, or may be arranged at the same position as the long bolts 5. It should be noted that the staggered arrangement of the buffer components 3 and the long bolts 5 specifically refers to the absence of the long bolts 5 on the line connecting the buffer components 3 and the center of the diaphragm group 2, rather than the buffer components 3 and the long bolts 5 being staggered on the same circumference. Similarly, the same position of the buffer components 3 and the long bolts 5 specifically refers to the presence of the long bolts 5 on the line connecting the buffer components 3 and the center of the diaphragm group 2, rather than the buffer components 3 and the long bolts 5 being arranged at the same point. Figures 2 to 4 shown.

[0027] In this embodiment, after the coupling is installed, the buffer assembly 3 is fixed in two opposite blind holes 7, that is, the shapes of the two ends of the buffer assembly 3 are the same as the shapes of the blind holes 7. At the same time, the length of the buffer assembly 3 is equal to the distance between the bottoms of the two blind holes 7 after the coupling is installed.

[0028] In one possible implementation, Figure 5 As shown, the buffer component 3 is a bellows. In this embodiment, the blind hole 7 is cylindrical, and the outer diameter of the bellows is the same as the diameter of the blind hole 7, so that the bellows can be embedded in the blind hole 7 to prevent the bellows from shaking in the blind hole 7 due to the difference between the outer diameter of the bellows and the diameter of the blind hole 7.

[0029] In a possible implementation, the buffer component 3 is a rubber block. In this embodiment, the rubber block is an elastic rubber block. Preferably, since the working environment of wind turbines is mostly harsh, the elastic rubber block should have strong corrosion resistance.

[0030] In one possible implementation, Figure 6As shown, the buffer assembly 3 includes two rubber pads 8 and a metal block 9. The two rubber pads 8 are respectively embedded in the two sets of half-coupling assemblies 1. The two rubber pads 8 are provided with grooves on the opposite sides. The two ends of the metal block 9 are respectively embedded in the two grooves. In this embodiment, the size and shape of the rubber pad 8 are the same as the size and shape of the blind hole 7, so that the rubber pad 8 can be completely placed in the blind hole 7. Preferably, the rubber pad 8 should have strong corrosion resistance.

[0031] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A diaphragm coupling, characterized in that: The invention comprises two groups of half-coupling groups (1), a diaphragm group (2) and a plurality of buffer components (3); the two groups of half-coupling groups (1) have the same structure; the diaphragm group (2) is fixedly arranged between the two groups of half-coupling groups (1); the plurality of buffer components (3) are circumferentially arranged outside the diaphragm group (2); and the plurality of buffer components (3) are embedded in the two groups of half-coupling groups (1).

2. A diaphragm coupling according to claim 1, characterized in that: The half coupling group (1) and the diaphragm group (2) are provided with through holes (4) of the same size, and the half coupling group (1) and the diaphragm group (2) are fixedly connected by long bolts (5) and nuts (6), and the long bolts (5) pass through the through holes (4) of the half coupling group (1) and the diaphragm group (2).

3. A diaphragm coupling according to claim 1, characterized in that: A blind hole (7) is provided on the side of the half coupling group (1) facing the diaphragm group (2), the number of the blind holes (7) is the same as the number of the buffer components (3), and a plurality of the buffer components (3) are arranged in a one-to-one correspondence in a plurality of the blind holes (7).

4. A diaphragm coupling according to claim 1, characterized in that: The buffer component (3) is a bellows.

5. The diaphragm coupling according to claim 1, characterized in that: The buffer component (3) is a rubber block.

6. A diaphragm coupling according to claim 1, characterized in that: The buffer assembly (3) comprises two rubber pads (8) and a metal block (9); the two rubber pads (8) are respectively embedded in two groups of half-coupling assemblies (1); grooves are provided on opposite sides of the two rubber pads (8); and two ends of the metal block (9) are respectively embedded in the two grooves.

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