Mounting structure for base, bearing seat and elastic support of doubly-fed wind turbine generator

Abstract

The utility model discloses a mounting structure for a base, a bearing seat and an elastic support of a doubly-fed wind turbine generator. The mounting structure comprises a first high-friction-coefficient friction plate, a second high-friction-coefficient friction plate and a stretching bolt, one end of the machine base is matched with the bearing seat, L-shaped spigots are formed in the matching positions of the machine base and the two sides of the bearing seat, the first high-friction-coefficient friction plate is installed between the contact faces of the machine base and the bearing seat, and the machine base, the first high-friction-coefficient friction plate and the bearing seat are connected in a fastened mode through stretching bolts; the other end of the machine base is matched with the elastic support, U-shaped spigots are formed in the matching positions of the other end of the machine base and the two sides of the elastic support, the second high-friction-coefficient friction plate is installed between the contact faces of the machine base and the elastic support, and the machine base, the second high-friction-coefficient friction plate and the elastic support are connected in a fastened mode through stretching bolts; according to the utility model, the problem of slippage among the double-fed wind turbine generator base, the bearing seat and the gear box elastic support can be effectively solved, and faults caused by bolt breakage can be further avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine installation structure, and in particular to an installation structure for a doubly fed wind turbine base, bearing housing and elastic support. Background Technology

[0002] The drive train system is a crucial component of wind turbine generator sets, and the main bearing plays a vital supporting role within it. For the main bearing to fulfill this supporting function, it relies on the support and fit of its bearing housing. With the development of the wind power industry, turbine models are becoming increasingly larger, and doubly-fed induction generators are gradually transitioning from dual main bearings to single main bearings. This places increasingly greater loads on the bearing housings, making them highly susceptible to slippage. Existing technologies, such as Chinese invention patent CN110788776B, disclose a positioning device for the main shaft bearing housing of a wind turbine generator set. This device can quickly and accurately position the bearing housing to ensure the clearance of the main shaft bearing is within tolerance, extending the service life of the main shaft bearing and ensuring the stability of the main shaft during operation. However, it only positions the bearing housing.

[0003] The elastic support is mainly used to support the gearbox and bear the radial alternating load and axial load. During the operation of the unit, the elastic support of the gearbox is also prone to slippage. However, there are currently few methods in this field to prevent the slippage of the bearing housing and elastic support of the doubly fed wind turbine. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a mounting structure for a doubly fed wind turbine generator base, bearing housing, and elastic support. This structure effectively solves the problem of slippage between the doubly fed wind turbine generator base, bearing housing, and gearbox elastic support, thereby preventing bolt breakage that could lead to more serious malfunctions in the generator unit.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: a mounting structure for a doubly fed wind turbine generator base, bearing housing, and elastic support, including a base, bearing housing, elastic support, a first high-friction coefficient friction plate, a second high-friction coefficient friction plate, and tension bolts; wherein, one end of the base mates with the bearing housing and has L-shaped stops at both sides of the bearing housing, and the bearing housing has corresponding L-shaped grooves matching the L-shaped stops; the first high-friction coefficient friction plate is installed between the contact surfaces of the base and the bearing housing, and the base, the first high-friction coefficient friction plate, and the bearing housing are fastened together by tension bolts; the other end of the base mates with the elastic support and has U-shaped stops at both sides of the elastic support, and the elastic support has corresponding U-shaped grooves matching the U-shaped stops; the second high-friction coefficient friction plate is installed between the contact surfaces of the base and the elastic support, and the base, the second high-friction coefficient friction plate, and the elastic support are fastened together by tension bolts.

[0006] Furthermore, the first high-friction coefficient friction plate is a rectangular friction plate with multiple bolt holes, and the bolt holes correspond one-to-one with the preset bolt holes of the machine base and bearing housing.

[0007] Furthermore, the second high-friction coefficient friction plate is an I-shaped friction plate with multiple bolt holes, and the bolt holes correspond one-to-one with the preset bolt holes of the base and elastic support.

[0008] Furthermore, both the first high-friction coefficient friction plate and the second high-friction coefficient friction plate are spring steel friction plates.

[0009] Furthermore, both the first and second high-friction coefficient friction plates have a diamond coating on their surfaces.

[0010] Furthermore, the elastic support is connected to the gearbox of the doubly fed wind turbine.

[0011] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0012] This utility model provides matching base stops on both sides and the rear side of the base, bearing seat, and elastic support, and uses friction plates with a high coefficient of friction to further increase the friction force. This can prevent slippage between the base, bearing seat, and elastic support due to large external loads during the operation of the doubly fed wind turbine, which could lead to breakage of the fixing bolts and serious failures. It is highly practical and has low installation cost. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the machine base.

[0015] Figure 3 This is a schematic diagram of the bearing housing.

[0016] Figure 4 This is a schematic diagram of the structure of the first high-friction coefficient friction plate.

[0017] Figure 5 This is a schematic diagram of a structure with elastic support.

[0018] Figure 6 This is a schematic diagram of the structure of the friction plate with the second highest coefficient of friction. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] See Figures 1 to 6 As shown, the mounting structure of the doubly fed wind turbine generator base, bearing housing and elastic support provided in this embodiment includes a base 1, a bearing housing 2, an elastic support 3, a first high friction coefficient friction plate 4, a second high friction coefficient friction plate 5, a first tension bolt 6 and a second tension bolt 7.

[0022] The front end of the base 1 mates with the bearing housing 2, and both sides of the bearing housing 2 are provided with L-shaped stops a. The long arm of the L-shaped stop a is located on both sides of the base 1, and the short arm of the L-shaped stop a is close to the rear end of the base 1. The bottom of the bearing housing 2 is provided with an L-shaped groove b that matches the L-shaped stop a, to prevent the bearing housing 2 from sliding left and right under external load and to prevent the bearing housing 2 from sliding backward under the axial force of the spindle. The first high-friction coefficient friction plate 4 is installed between the contact surfaces of the base 1 and the bearing housing 2. The first high-friction coefficient friction plate 4 is a rectangular friction plate with multiple bolt holes 401, and the bolt holes 401 correspond one-to-one with the preset bolt holes of the base 1 and the bearing housing 2. The base 1, the first high-friction coefficient friction plate 4, and the bearing housing 2 are connected by a first tension... Tension bolts 6 form a fastening connection; the rear end of the base 1 mates with the elastic support 3, and both sides of the mate with the elastic support 3 are provided with U-shaped stops c, the openings of the U-shaped stops c facing the front end of the base 1. The bottom of the elastic support 3 is provided with a U-shaped groove d that matches the U-shaped stops c, to prevent the gearbox elastic support 3 from sliding left and right and to prevent the gearbox elastic support 3 from sliding backward. The second high-friction coefficient friction plate 5 is installed between the contact surfaces of the base 1 and the elastic support 3. The second high-friction coefficient friction plate 5 is an I-shaped friction plate with multiple bolt holes 501, and the bolt holes 501 correspond one-to-one with the preset bolt holes of the base 1 and the elastic support 3. The base 1, the second high-friction coefficient friction plate 5, and the elastic support 3 are fastened together by second tension bolts 7. The first high-friction coefficient friction plate 4 and the second high-friction coefficient friction plate 5 are both spring steel friction plates, and both have a diamond coating on their surfaces, with a friction coefficient of 0.5-0.65.

[0023] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all changes made in accordance with the shape and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A mounting structure for a doubly-fed wind turbine generator base, bearing housing, and elastic support, comprising a base, bearing housing, and elastic support, characterized in that: The system includes a first high-friction coefficient friction plate, a second high-friction coefficient friction plate, and tension bolts. One end of the base mates with a bearing housing, and both sides of the base have L-shaped stops. The bearing housing has corresponding L-shaped grooves matching the L-shaped stops. The first high-friction coefficient friction plate is installed between the contact surfaces of the base and the bearing housing. The base, the first high-friction coefficient friction plate, and the bearing housing are fastened together by tension bolts. The other end of the base mates with an elastic support, and both sides of the elastic support have U-shaped stops. The elastic support has corresponding U-shaped grooves matching the U-shaped stops. The second high-friction coefficient friction plate is installed between the contact surfaces of the base and the elastic support. The base, the second high-friction coefficient friction plate, and the elastic support are fastened together by tension bolts.

2. The mounting structure of a doubly fed wind turbine generator base, bearing housing, and elastic support according to claim 1, characterized in that: The first high-friction coefficient friction plate is a rectangular friction plate with multiple bolt holes, and the bolt holes correspond one-to-one with the preset bolt holes of the machine base and bearing housing.

3. The mounting structure of a doubly fed wind turbine generator base, bearing housing, and elastic support according to claim 1, characterized in that: The second high-friction coefficient friction plate is an I-shaped friction plate with multiple bolt holes, and the bolt holes correspond one-to-one with the preset bolt holes of the base and elastic support.

4. The mounting structure of a doubly fed wind turbine generator base, bearing housing, and elastic support according to claim 1, characterized in that: Both the first high-friction coefficient friction plate and the second high-friction coefficient friction plate are spring steel friction plates.

5. The mounting structure of a doubly fed wind turbine generator base, bearing housing, and elastic support according to claim 1, characterized in that: Both the first and second high-friction coefficient friction plates have a diamond coating on their surfaces.

6. The mounting structure of a doubly fed wind turbine generator base, bearing housing, and elastic support according to claim 1, characterized in that: The elastic support is connected to the gearbox of the doubly fed wind turbine.

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