Rear underframe of wind turbine generator

Abstract

The utility model relates to the technical field of wind power generation, in particular to a rear underframe of a wind turbine generator, which comprises a mounting component, an assembling component and a connecting component, the assembling component is mounted on the mounting component, the assembling component and the mounting component are combined to form a rear chassis main body, and the rear chassis main body is used for connecting a gearbox and a control cabinet of the wind turbine generator; meanwhile, a mounting groove is formed in a connecting point below the assembling assembly and the mounting assembly, and a connecting piece is assembled in the mounting groove; the assembling component and the mounting component are detachable; the connecting assembly is installed on the assembling assembly and used for being connected with a generator arranged on the wind turbine generator. When the mounting assembly and the assembling assembly are assembled, the reinforcing rods are inserted into the grooves, the connecting modes of the bottom plate and the rear underframe are increased, connecting points are prevented from being damaged, the position bearing performance of the connecting points is improved, the grooves are formed in the bottom plate, then the bearing capacity of the bottom plate is increased through the side plates, the use effect of the rear underframe of the wind turbine generator is improved, and the mounting and supporting use of the rear underframe on the wind turbine generator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a rear chassis of a wind turbine generator set. Background Art

[0002] Under the premise of meeting the performance requirements of the wind turbine, selecting the appropriate molding method for each structural component and the resulting structure can improve the cost-effectiveness of the wind turbine. As the load-bearing structure of the wind turbine's main transmission system, the wind turbine frame transfers almost all of the load on the wind turbine to the tower and provides support for the gearbox, generator, and other unit structures. Therefore, the frame is one of the most critical and complex components in a wind turbine.

[0003] Chinese patent announcement number CN217002151U discloses a wind turbine rear chassis, a frame, and a wind turbine, comprising a plurality of independent frames, wherein the independent frames comprise a main beam and a cross beam fixedly connected to each other, the independent frames are detachably connected to each other, and the plurality of independent frames are spliced in sequence according to the main beams to form the wind turbine rear chassis. The wind turbine rear chassis is a split structure formed by splicing a plurality of independent frames. On the one hand, it facilitates the production, assembly, transportation, and installation of the entire wind turbine rear chassis, replacing the large-sized integrated wind turbine rear chassis in the prior art. On the other hand, different split structures can be selected and assembled according to actual production conditions, actual installation requirements, and actual transportation conditions, so that the wind turbine rear chassis has better versatility, thereby improving operating efficiency and saving costs.

[0004] Although the existing wind turbine rear chassis is detachable for easy use according to actual conditions, the connection points of the main beam or cross beam are easily affected by the gravity of the turbine, resulting in damage to the connection points, poor load-bearing performance, and reduced use of the wind turbine rear chassis. Utility Model Content

[0005] In view of the problems existing in the background technology, a rear chassis of a wind turbine is proposed.

[0006] The utility model provides a rear chassis of a wind turbine generator set, comprising: a mounting component, an assembly component and a connection component;

[0007] Install components;

[0008] The assembly component is installed on the installation component. The assembly component and the installation component together constitute the rear chassis body, which is used to connect the gearbox and control cabinet of the wind turbine. At the same time, a mounting groove is provided at the connection point below the assembly component and the installation component, and a connecting piece is provided in the mounting groove. The assembly component and the installation component are detachable.

[0009] and a connection component, which is mounted on the assembly component and is used for connecting the generator of the wind turbine set.

[0010] Preferably, the mounting assembly includes a mounting frame and side panels;

[0011] The mounting frame has two grooves on one side; the side plates are mounted on both sides of the mounting frame and connected to the outsides of the two grooves; the bottom plate is mounted on the top of the mounting frame, and two bottom plates are provided;

[0012] The base plate is used to connect to the gearbox of the wind turbine.

[0013] Preferably, the assembly assembly includes a connecting frame, a reinforcing rod, a crossbeam a, a crossbeam b and a partition;

[0014] The connecting frame is installed on one side of the mounting frame and is provided with three openings on one side; two reinforcing rods are installed on one side of the connecting frame; beam a is installed on the connecting frame, and beam b is provided on one side of beam a; the partition is installed at the upper center position of the connecting frame and is provided with a limiting groove;

[0015] The connecting frame and the mounting frame are connected so that the two reinforcement rods are opposite to the two grooves, and the reinforcement rods are moved into the grooves; one end of the crossbeam b passes through the opening and is connected to the limit groove, and the other end is connected to one side of the connecting frame through the baffle;

[0016] The crossbeam b and the crossbeam a are used to be connected to the generator of the wind turbine generator set, and the connection distance between the crossbeam b and the crossbeam a is adjusted through the opening.

[0017] Preferably, the connecting frame and the mounting frame are connected by welding.

[0018] Preferably, the connecting member includes a mounting plate, a splicing plate and a mounting block;

[0019] The mounting plate is mounted on the mounting groove, a splicing plate is provided on one side of the mounting plate, and two connecting grooves are provided at the assembly point of the mounting plate and the splicing plate; the splicing plate is mounted on the connecting groove;

[0020] Four bolts are used to penetrate the mounting block and are connected to the splicing plate and the mounting plate on two sides respectively, to assist in the assembly of the assembly components and the installation components.

[0021] Preferably, the connection assembly includes a base, a vertical block and a support column;

[0022] The base is installed on the connecting frame, a vertical block is provided above the base, and a support column is provided below the base;

[0023] The base and the connecting frame are connected through the support columns.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] The utility model divides the rear chassis of the wind turbine into an installation component and an assembly component. The installation component is used to support the gear box, main shaft and bearing seat chassis, and the assembly component is used to support the generator and control cabinet chassis. The installation component and the assembly component are detachable, which is convenient for production, assembly, transportation and installation. Subsequently, two grooves are set on one side of the base plate, and two reinforcement rods are set on one side of the rear chassis. When the installation component and the assembly component are assembled, the reinforcement rods are inserted into the grooves, which increases the connection method between the base plate and the rear chassis, avoids damage to the connection point, and improves the bearing performance of the connection point position. The grooves are set on the base plate, and then side panels are formed on both sides of the base plate. The side panels increase the bearing capacity of the base plate, which conveniently improves the use effect of the rear chassis of the wind turbine.

[0026] The utility model provides an opening on one side of the rear chassis, and the opening is used for one end of the crossbeam b to pass through, so that the crossbeam b first passes through the opening, and then the two ends are connected to the partition and the rear chassis by welding, so as to increase the stability of the connection. In addition, three openings are provided, which is convenient for adjusting the crossbeam b and the crossbeam a according to the size of the control cabinet, so as to improve the use function of the rear chassis of the wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the connection structure of the installation component and the assembly component in the present utility model;

[0029] Figure 3 This is a schematic diagram of the base structure in the utility model;

[0030] Figure 4 This is a schematic diagram of the connecting piece structure in the utility model.

[0031] Figure numerals: 1. Mounting frame; 101. Side panel; 102. Bottom plate; 103. Mounting plate; 2. Connecting frame; 201. Reinforcement rod; 202. Beam a; 203. Beam b; 204. Partition; 205. Splicing plate; 206. Mounting block; 3. Base; 301. Vertical block; 302. Support column; 4. Rear chassis body. DETAILED DESCRIPTION

[0032] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0033] Example 1

[0034] like Figure 1 - Figure 4As shown, the utility model proposes a rear chassis for a wind turbine, comprising: a mounting assembly, an assembly assembly, and a connecting assembly; the assembly assembly is mounted on the mounting assembly, and the assembly assembly and the mounting assembly together constitute a rear chassis body 4, which is used to connect the gearbox and control cabinet of the wind turbine; at the same time, mounting slots are provided at the connection points below the assembly assembly and the mounting assembly, and the mounting slots are provided with connecting pieces; the assembly assembly and the mounting assembly are detachable; and the connecting assembly is mounted on the assembly assembly and is used to connect the generator of the wind turbine. By assembling the mounting assembly and the assembly assembly, the rear chassis body 4 is assembled and used to support the wind turbine.

[0035] To further illustrate, the mounting assembly includes a mounting frame 1, side panels 101, and a bottom panel 102. The mounting frame 1 has two grooves on one side. The side panels 101 are mounted on both sides of the mounting frame 1 and connected to the outside of the two grooves. The bottom panel 102 is mounted above the mounting frame 1, and two bottom panels 102 are provided. The bottom panels 102 are used to connect to the gearbox of the wind turbine. The front bottom panel 102 connects the main shaft and the bearing seat, while the rear bottom panel 102 connects to the gearbox. The side panels 101 increase the load-bearing capacity of the mounting frame 1 on both sides, preventing the two grooves from interfering with the rear bottom panel 4's support of the wind turbine.

[0036] Further explanation: the assembly component includes a connecting frame 2, a reinforcement rod 201, a beam a202, a beam b203 and a partition 204; the connecting frame 2 is installed on one side of the mounting frame 1, and one side is provided with three openings; two reinforcement rods 201 are installed on one side of the connecting frame 2; the beam a202 is installed on the connecting frame 2, and a beam b203 is provided on one side of the beam a202; the partition 204 is installed at the upper center position of the connecting frame 2 and is provided with a limiting groove; the connecting frame 2 and the mounting frame 1 are connected so that the two reinforcement rods 201 are opposite to the two grooves, and the reinforcement rod 201 is moved into the inside of the groove; one end of the beam b203 passes through the opening and is connected to the limiting groove, and the other end is connected to one side of the connecting frame 2 through a baffle; the beam b203 and the beam a202 are used to connect to the generator of the wind turbine set, and the connection distance between the beam b203 and the beam a202 is adjusted through the opening. When the connecting frame 2 and the mounting frame 1 are assembled, the connecting frame 2 moves to the side of the mounting frame 1, and the connecting frame 2 carries two reinforcement rods 201, and the reinforcement rods 201 move into the inside of the groove, so that the connection points of the connecting frame 2 and the mounting frame 1 are increased, avoiding reducing the support of the rear base frame body 4 for the wind turbine generator set, and facilitating improving the coordination effect between the rear base frame structures.

[0037] Further, the connection frame 2 and the mounting frame 1 are connected by welding. By moving the reinforcement rod 201 into the groove, the mounting frame 1 and the connection frame 2 are welded together using welding equipment. The welding force F is determined by a welding force calculator based on the wind turbine t, the weld size W, and the welding parameters to achieve the connection between the connection frame 2 and the mounting frame 1.

[0038] Example 2

[0039] like Figure 2 and Figure 4 As shown, the utility model proposes a rear chassis of a wind turbine set. Based on the above embodiment, this embodiment also records in detail the specific components and matching methods.

[0040] Further explanation: the connecting parts include a mounting plate 103, a splicing plate 205, and a mounting block 206; the mounting plate 103 is mounted on the mounting groove, a splicing plate 205 is provided on one side of the mounting plate 103, and two connecting grooves are provided at the assembly point of the mounting plate 103 and the splicing plate 205; the splicing plate 205 is mounted on the connecting groove; four bolts are used to penetrate the mounting block 206 and connect the two sides of the splicing plate 205 and the mounting plate 103 respectively, to assist in the assembly of the assembly components and the installation components. During the assembly of the mounting frame 1 and the connecting frame 2, the splicing plate 205 is synchronously moved to the side of the mounting plate 103, and by connecting the mounting block 206 to the connecting groove, and then using bolts to penetrate the mounting block 206 and the splicing plate 205 and the mounting plate 103, the stability of the assembly point of the mounting frame 1 and the connecting frame 2 is increased, and the load-bearing support for the wind turbine is improved.

[0041] To further illustrate, the connection assembly includes a base 3, a vertical block 301, and a support column 302. The base 3 is mounted on the connection frame 2, with the vertical block 301 positioned above it and the support column 302 positioned below it. The support column 302 connects the base 3 to the connection frame 2. One end of the support column 302 is mounted on the connection frame 2, supporting the base 3, which in turn supports the vertical block 301. The generator of the wind turbine is mounted on the base 3, and then the generator mounting assembly is connected using the vertical block 301 to achieve operation with the gearbox.

[0042] The working principle of the present invention is as follows: by moving the connecting frame 2 onto the mounting frame 1, the connecting frame 2 carries the reinforcement rod 201, the reinforcement rod 201 and the groove are opposite, so that the reinforcement rod 201 moves into the groove, and then the connecting frame 2 and the mounting frame 1 are assembled, and then a mounting groove is set at the bottom, the mounting frame 1 carries the mounting plate 103, the connecting frame 2 carries the splicing plate 205, the mounting plate 103 and the splicing plate 205 are connected, and then a connecting groove is set at the connecting point, and then the mounting block 206 is placed in the connecting groove, and the bolts are used to penetrate the mounting block 206 and install it on the mounting plate 103 and the splicing plate 205, so that the bottom of the connecting frame 2 and the mounting frame 1 are assembled and reinforced for use. After the mounting frame 1 and the connecting frame 2 are assembled, the wind turbine gearbox is installed on the base plate 102, and at the same time connected to the support column 302 on the connecting frame 2. The support column 302 supports the base 3, so that the wind turbine generator is installed on the base 3. The base 3 cooperates with the vertical block 301 to fix the generator. An opening is set on the connecting frame 2, and one end of the beam b203 is used to pass through the opening and connected to the partition 204, and then the other end of the beam b203 is connected to the outside with a baffle. The beam b203 is used in conjunction with the beam a202 to achieve the installation of the wind turbine control cabinet, so that the rear base frame body 4 is used to support the wind turbine installation.

[0043] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A rear chassis of a wind turbine generator set, characterized in that: include: Install components; An assembly component is mounted on the mounting component. The assembly component and the mounting component are combined to form a rear chassis body (4). The rear chassis body (4) is used to connect the gear box and the control cabinet of the wind turbine generator set. At the same time, a mounting groove is provided at the connection point below the assembly component and the mounting component, and a connecting piece is provided in the mounting groove. The assembly component and the mounting component are detachable. and a connection component, which is mounted on the assembly component and is used for connecting the generator of the wind turbine set.

2. A wind turbine rear chassis according to claim 1, characterized in that: The mounting assembly comprises a mounting frame (1), a side plate (101) and a bottom plate (102); A mounting frame (1) is provided with two grooves on one side; side plates (101) are installed on both sides of the mounting frame (1) and connected to the outsides of the two grooves; a bottom plate (102) is installed above the mounting frame (1), and two bottom plates (102) are provided; The base plate (102) is used for connecting with the gear box of the wind turbine generator set.

3. The rear chassis of a wind turbine generator set according to claim 1, characterized in that: The assembly component includes a connecting frame (2), a reinforcing rod (201), a crossbeam a (202), a crossbeam b (203) and a partition (204); The connecting frame (2) is installed on one side of the mounting frame (1), and one side is provided with three openings; two reinforcing rods (201) are installed on one side of the connecting frame (2); a crossbeam a (202) is installed on the connecting frame (2), and a crossbeam b (203) is provided on one side of the crossbeam a (202); a partition plate (204) is installed at the upper center position of the connecting frame (2) and is provided with a limiting groove; The connecting frame (2) and the mounting frame (1) are connected so that the two reinforcing rods (201) are opposite to the two grooves, and the reinforcing rods (201) are moved into the grooves; one end of the crossbeam b (203) passes through the opening and is connected to the limiting groove, and the other end is connected to one side of the connecting frame (2) through a baffle; The crossbeam b (203) and the crossbeam a (202) are used to connect with the generator of the wind turbine generator set, and the connection distance between the crossbeam b (203) and the crossbeam a (202) is adjusted through the opening.

4. A wind turbine rear chassis according to claim 3, characterized in that: The connecting frame (2) and the mounting frame (1) are connected by welding.

5. The rear chassis of a wind turbine generator set according to claim 4, characterized in that: The connecting piece includes a mounting plate (103), a splicing plate (205) and a mounting block (206); The mounting plate (103) is mounted on the mounting groove, a splicing plate (205) is provided on one side of the mounting plate (103), and two connecting grooves are provided at the assembly point of the mounting plate (103) and the splicing plate (205); the splicing plate (205) is mounted on the connecting groove; By using four bolts to penetrate the mounting block (206) and connect two of the two sides to the splicing plate (205) and the mounting plate (103), it is used to assist in assembling the assembly components and the mounting components.

6. The rear chassis of a wind turbine generator set according to claim 1, characterized in that: The connection assembly includes a base (3), a vertical block (301) and a support column (302); The base (3) is mounted on the connecting frame (2), a vertical block (301) is provided above the base (3), and a support column (302) is provided below the base (3); The base (3) and the connecting frame (2) are connected via a supporting column (302).

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