Elastic supporting device of wind turbine generator gearbox and wind turbine generator

Abstract

The elastic supporting device comprises a support, an elastic body and a retainer, the support is arranged on a main frame of the wind turbine generator and provided with a vibration reduction mounting hole penetrating through two end faces, and the elastic body is arranged in the vibration reduction mounting hole. Threaded holes are formed in the positions, close to the damping mounting holes, of the two end faces. The elastic body is installed in the damping installation hole of the support, the outer ring face of the elastic body is connected with the hole wall of the damping installation hole, the inner ring face of the elastic body is used for being connected with a gearbox torque arm, and the elastic body is provided with a stop connecting hole penetrating in the axis direction of the damping installation hole. The retainer comprises a stop pin penetrating through the stop connecting hole, a first baffle fixedly connected with the stop pin and a second baffle detachably connected with the stop pin, and the first baffle and the second baffle are connected with the two opposite end faces of the support through bolts respectively. According to the scheme, axial or radial displacement of the elastic body in the support can be limited; and the retainer is simple in structure and convenient to mount.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and more specifically to an elastic support device for a wind turbine gearbox and a wind turbine. Background Technology

[0002] The gearbox of a wind turbine generator set primarily bears the bending and torque transmitted through the main shaft. Uneven load distribution on the gear transmission and bearing rolling elements within the gearbox also contributes to noise and vibration. A gearbox vibration damping elastomer is installed between the gearbox torque arm and the damping seat to reduce energy transfer between them, mitigating the negative effects of vibration and achieving vibration and noise reduction.

[0003] Existing bearing-type gearbox vibration damping uses shaft end caps for axial positioning of the elastic body. However, when the gearbox is in operation and there are large vibration amplitudes or large torque arm displacements, the friction force of the shaft end caps alone is insufficient to achieve effective stopping. The elastic body will rotate in the support seat, causing changes in the overall stiffness, which in turn leads to problems such as unit resonance. Utility Model Content

[0004] The purpose of this invention is to provide an elastic support device for wind turbine gearboxes in order to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model proposes an elastic support device for a wind turbine gearbox, comprising:

[0006] The support is mounted on the main frame of the wind turbine. The support has vibration damping mounting holes that penetrate both end faces, and threaded holes are provided on both end faces near the vibration damping mounting holes.

[0007] An elastomer is installed in the damping mounting hole of the support, with its outer ring surface engaging with the hole wall of the damping mounting hole and its inner ring surface engaging with the gearbox torque arm. The elastomer is provided with a stop connection hole that extends through the axial direction of the damping mounting hole.

[0008] The stop includes a stop pin passing through the stop connection hole, a first baffle fixedly connected to the stop pin, and a second baffle detachably connected to the stop pin. The first baffle and the second baffle are respectively connected to two opposite end faces of the support by bolts.

[0009] Furthermore, the support includes an upper body and a lower body, each of which is provided with a damping mounting half hole that matches the upper and lower halves of the gearbox torque arm. The upper body and the lower body are connected by bolts, so that the two damping mounting half holes together form a complete damping mounting hole.

[0010] Furthermore, the elastic body includes an upper elastic body disposed between the shock-absorbing mounting half-hole of the upper seat and the gear set torque arm, and a lower elastic body disposed between the shock-absorbing mounting half-hole of the lower seat and the gear set torque arm.

[0011] Furthermore, the stop includes a first stop connected to the upper seat and the upper elastic body respectively, and a second stop connected to the lower seat and the lower elastic body respectively.

[0012] Furthermore, the stop pin is fitted with a rubber sleeve for engaging with the stop connection hole.

[0013] Furthermore, the length of the stop pin is greater than the axial dimension of the elastic body, and the second baffle has a fitting hole that matches the end of the stop pin.

[0014] Furthermore, the elastic body comprises inner and outer layers, and the elastic support device further comprises partitions respectively disposed between the two layers of elastic body, between the outer layer of elastic body and the vibration damping mounting hole of the support, and between the inner layer of elastic body and the gearbox torque arm. Each layer of elastic body is provided with a stop connection hole at the same radial position.

[0015] Furthermore, the stop member includes two stop pins respectively fitted into the stop connection holes of the inner and outer elastic bodies.

[0016] Furthermore, the stop connection hole is formed by a combination of segmented elastomers and adjacent partitions spaced apart circumferentially.

[0017] This utility model proposes a wind turbine generator set, which includes the above-mentioned elastic support device.

[0018] This solution can limit the axial or radial displacement of the elastomer in the support, thereby avoiding problems such as unit resonance caused by changes in overall stiffness due to the displacement of the elastomer, and improving the safety and reliability of unit operation; moreover, the stop component has a simple structure and is easy to install. Attached Figure Description

[0019] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, explaining the apparatus and principles of the invention. In the drawings,

[0020] Figure 1 This is a schematic diagram of the structure of the elastic support device according to an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the stop member according to an embodiment of the present utility model;

[0022] Figure 3This is a schematic diagram of the stop pin and the first cover plate of the stop member in an embodiment of the present utility model;

[0023] Figure 4 This is a front view of the stop pin and the first cover plate of the stop member in an embodiment of the present utility model.

[0024] Figure 5 This is a front view of the second cover plate of the stop member according to an embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the upper elastic body in an embodiment of the present invention. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely preferred embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] It should be understood that, unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of the invention. Terms such as “part” and “component” appearing herein may refer to a single part or a combination of multiple parts. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. Ordinal numbers such as “first” and “second” are merely identifiers and have no other meaning, such as a specific order. Moreover, for example, the term “first component” does not imply the existence of a “second component,” and the term “second component” does not imply the existence of a “first component.” When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "center," "vertical," "horizontal," and similar expressions are for illustrative purposes only and are not intended to be limiting. The terms "connect," "install," "link," and "set" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances. Features described in one embodiment may be applied alone or in combination with other features in another embodiment, unless that feature is not applicable in that other embodiment or is otherwise specified.

[0028] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which show representative embodiments of the present invention and are not intended to limit the present invention.

[0029] This utility model provides an elastic support device for a wind turbine gearbox, such as... Figure 1-6As shown, the elastic support device includes a support 1, an elastic body 2, and a stop 3. The support 1 is mounted on the main frame of the wind turbine and has vibration damping mounting holes that penetrate both end faces, and threaded holes are provided on both end faces near the vibration damping mounting holes. The elastic body 2 is installed in the vibration damping mounting holes of the support 1, with its outer ring surface engaging with the hole wall of the vibration damping mounting hole, and its inner ring surface engaging with the gearbox torque arm. The elastic body 2 has a stop connection hole 20 that penetrates along the axial direction of the vibration damping mounting hole. The stop 3 includes a stop pin 31 passing through the stop connection hole 20, a first baffle 32 fixedly connected to the stop pin 31, and a second baffle 33 detachably connected to the stop pin 31. The first baffle 32 and the second baffle 33 are respectively connected to the two opposite end faces of the support 1 by bolts. Specifically, the first baffle 32 and the second baffle 33 are respectively provided with bolt connection holes 320 and 330 that match the threaded holes near the vibration damping mounting holes of the support 1, so that the two end plates 32 and 33 can be tightened to the two opposite end faces of the support 1 by bolts. The first baffle 32 and the second baffle 33 are arranged opposite to each other and respectively connected to the two opposite end faces of the support 1, thereby restricting the axial displacement of the elastic body 2; the elastic body 2 has a stop connection hole 20 through which the stop pin 31 passes, which restricts the radial rotation of the elastic body 2. Therefore, this solution can effectively avoid problems such as unit resonance caused by changes in overall stiffness due to displacement of the elastic body, and improve the safety and reliability of unit operation.

[0030] like Figure 1 As shown, the support 1 includes an upper body 1a and a lower body 1b. Each of the upper body 1a and lower body 1b has a damping mounting half-hole that matches the upper and lower halves of the gearbox torque arm. The upper body 1a and lower body 1b are connected to each other by tightening mounting bolts 5 and locking nuts 6 on the pad 7, so that the two damping mounting half-holes together form a complete damping mounting hole. The elastic body 2 includes an upper elastic body 2a disposed between the damping mounting half-hole of the upper body 1a and the gear set torque arm, and a lower elastic body 2b disposed between the damping mounting half-hole of the lower body 1b and the gear set torque arm. Correspondingly, the stop 3 includes a first stop 3a connected to the upper body 1a and the upper elastic body 2a respectively, and a second stop 3b connected to the lower body 1b and the lower elastic body 2b respectively. Additionally, the support 1 may also include a base plate 1c, which is bolted to the upper lower body 1b and fixedly connected to the lower main frame.

[0031] According to an embodiment of this utility model, the elastic body 2 comprises inner and outer layers. Correspondingly, the elastic support device further includes partitions 4 respectively disposed between the two elastic body layers 2, between the outer elastic body 2 and the vibration damping mounting hole of the support 1, and between the inner elastic body 2 and the gearbox torque arm. Each elastic body 2 has a stop connection hole 20 at the same radial position. Correspondingly, the stop member 3 includes two stop pins 31 respectively fitted into the stop connection holes 20 of the inner and outer elastic body layers 2. Figure 6 As shown, the stop connection hole 20 can be formed by enclosing segmented elastomers 2 and adjacent partitions 4 spaced apart circumferentially. Preferably, the stop pin 31 is fitted with a rubber sleeve 311 for engaging with the stop connection hole 20, so as to avoid direct contact between the metal and the elastomer and cause wear on the elastomer rubber, while increasing the friction between the stop pin and the elastomer and improving the limiting strength. In addition, the length of the stop pin 31 is greater than the axial dimension of the elastomer 2, so that the end of the stop pin 31 that engages with the second baffle 33 extends out of the elastomer 2. Correspondingly, the second baffle 33 has a fitting hole 331 that matches this end of the stop pin 31 to realize the connection between the second baffle 33 and the stop pin 31.

[0032] During assembly, the first step is to connect the lower seat 1b to the base plate 1c using mounting bolts 5. Then, the lower elastic body 2b is placed in the damping mounting half-hole of the lower seat 1b, and the stop pin 31 of the second stop 3b is inserted into the stop connection hole 20 of the lower elastic body 2b, so that the first baffle 32 of the second stop 3b engages with one end face of the lower seat 1b. The first baffle 32 of the second stop 3b is then tightened to the lower seat 1b using the bolt washer assembly 8. The second step is to place the gearbox torque arm on the lower elastic body 2b of the lower seat 1b, place the upper elastic body 2a on the gearbox torque arm, and then place the upper seat 1a on the lower seat 1b. On the upper elastic body 2a, the mounting bolt 5 passes through the bolt mounting hole of the upper seat 1a. At this time, the stop pin 31 of the first stop 3a is inserted into the stop connection hole 20 of the upper elastic body 2a, so that the first baffle 32 of the first stop 3a engages with one end face of the upper seat 1a, and the first baffle 32 of the first stop 3a is tightened to the upper seat 1a through the bolt washer assembly 8. In the third step, the locking nut 6 is tightened, and the second baffles 33 of the first and second stop 3a and 3b are inserted into the upper and lower stop pins 31 respectively through their respective fitting holes 331 on the other end faces of the upper and lower seats 1a and 1b, and tightened to the support 1 respectively through the bolt washer assembly 9.

[0033] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An elastic support device for a wind turbine generator set gear box, characterized by, The application relates to a resilient supporting device for a wind turbine. The resilient supporting device comprises a support (1) arranged on a main frame of the wind turbine, wherein the support (1) is provided with a damping mounting hole penetrating through two end faces and is provided with threaded holes at positions close to the damping mounting hole on the two end faces; The resilient supporting device further comprises an elastic body (2) mounted in the damping mounting hole of the support (1), wherein an outer ring surface of the elastic body (2) is engaged with a hole wall of the damping mounting hole, an inner ring surface of the elastic body (2) is used for engaging with a torsion arm of a gear box, and the elastic body (2) is provided with a stop connecting hole (20) penetrating through the elastic body (2) along an axial direction of the damping mounting hole; The resilient supporting device further comprises a stopper (3) comprising a stop pin (31) penetrating through the stop connecting hole (20), a first baffle (32) fixedly connected with the stop pin (31), and a second baffle (33) detachably connected with the stop pin (31), wherein the first baffle (32) and the second baffle (33) are connected with the two end faces of the support (1) through bolts respectively.

2. The elastic support apparatus according to claim 1, wherein The support (1) comprises an upper seat body (1a) and a lower seat body (1b), wherein the upper seat body (1a) and the lower seat body (1b) are respectively provided with damping mounting half holes matched with upper and lower half portions of the torsion arm of the gear box, and the upper seat body (1a) and the lower seat body (1b) are connected through bolts, so that the two damping mounting half holes jointly form a complete damping mounting hole.

3. The elastic support apparatus according to claim 2, wherein The elastic body (2) comprises an upper elastic body (2a) arranged between the damping mounting half hole of the upper seat body (1a) and the torsion arm of the gear box and a lower elastic body (2b) arranged between the damping mounting half hole of the lower seat body (1b) and the torsion arm of the gear box.

4. The elastic support apparatus according to claim 3, wherein The stopper (3) comprises a first stopper (3a) connected with the upper seat body (1a) and the upper elastic body (2a) respectively and a second stopper (3b) connected with the lower seat body (1b) and the lower elastic body (2b) respectively.

5. The elastic support apparatus according to claim 1, wherein The stop pin (31) is sleeved with a rubber sheath (311) used for engaging with the stop connecting hole (20).

6. The elastic support apparatus according to claim 1, wherein The length of the stop pin (31) is greater than the axial dimension of the elastic body (2), and the second baffle (33) is provided with an embedded hole (331) matched with an end portion of the stop pin (31).

7. The elastic support apparatus according to claim 1, wherein The elastic body (2) comprises two layers of inner and outer elastic bodies, and the resilient supporting device further comprises a partition plate (4) arranged between the two layers of elastic bodies (2), between the outer layer of elastic bodies (2) and the damping mounting hole of the support (1), and between the inner layer of elastic bodies (2) and the torsion arm of the gear box, and each layer of elastic bodies (2) is provided with a stop connecting hole (20) at the same radial position.

8. The elastic support apparatus according to claim 7, wherein The stopper (3) comprises two stop pins (31) sleeved in the stop connecting holes (20) of the two layers of elastic bodies (2) respectively.

9. The elastic support device according to claim 7 or 8, wherein The stop connecting holes (20) are formed by the segmented elastic body (2) and the adjacent partition plate (4) which are spaced apart from each other along a circumferential direction.

10. A wind turbine generator characterized by, The wind turbine comprises the resilient supporting device according to any one of claims 1-9.

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