Wind turbine nacelle

Abstract

The invention discloses a cabin of a wind turbine generator set, comprising: a main frame, a front frame assembly, a rear frame assembly, and a main transmission system; the main transmission system comprises: a main shaft, a bearing seat, a speed increaser, a coupling and a generator; the bearing seat is arranged at the front part of the main frame, the speed increaser is installed at the rear part of the main frame through elastic support, the main shaft passes through the bearing seat and is connected with the front end of the speed increaser, the rear end of the speed increaser is connected with the front end of the coupling, the rear end of the coupling is connected with the generator, and the generator is arranged in the rear frame assembly; the front frame assembly is arranged on the main frame, and the upper front end of the rear frame assembly is hinged to the rear end of the front frame assembly, and the lower front end of the rear frame assembly is detachably hinged to the rear end of the main frame for completing deflection correction; the bearing seat and the main frame are provided with detachable pads for adjusting the elevation angle of the bearing seat; a front bracket and a rear bracket with adjustable height are provided between the generator and the rear frame assembly for adjusting the angle of the generator.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a nacelle of a wind power generator set. Background Art

[0002] Wind energy is the most representative type of renewable energy. It is of great significance to protecting the environment and maintaining ecological balance, as well as reducing dependence on conventional energy and improving the energy structure.

[0003] Wind resources vary significantly across my country. In order to meet the differentiated needs of different market segments and reduce product costs, it is often necessary to develop a series of wind turbines. When wind turbines are equipped with blades of different specifications, the clearance between the blades and the tower is often too small. If the frame, hub and other structural parts are customized according to the blade conditions, the elevation angle and cone angle of the wind turbine can be increased, thereby increasing the clearance distance, but the cost is increased, and too many product series are not conducive to production organization. Some wind turbines have a large number of equipment arranged in the nacelle, which causes the nacelle to have a large downward deflection, which has an adverse effect on the assembly and adjustment of the main transmission system, nacelle cover and other equipment. Summary of the invention

[0004] In order to solve some or all of the technical problems existing in the above-mentioned prior art, the present invention provides a wind turbine generator nacelle. The technical solution is as follows:

[0005] A wind turbine generator nacelle is provided, comprising: a main frame, a front frame assembly, a rear frame assembly, and a main transmission system; the main transmission system comprises: a main shaft, a bearing seat, a speed increaser, a coupling, and a generator; the bearing seat is arranged at the front part of the main frame, the speed increaser is installed at the rear part of the main frame through elastic support, the main shaft passes through the bearing seat and is connected to the front end of the speed increaser, the rear end of the speed increaser is connected to the front end of the coupling, the rear end of the coupling is connected to the generator, and the generator is arranged in the rear frame assembly; the front frame assembly is arranged on the main frame, and the upper front end of the rear frame assembly is hinged to the rear end of the front frame assembly, and the lower front end of the rear frame assembly is detachably hinged to the rear end of the main frame for completing deflection correction; the bearing seat and the main frame are provided with detachable pads for adjusting the elevation angle of the bearing seat; a height-adjustable front bracket and a rear bracket are provided between the generator and the rear frame assembly for adjusting the angle of the generator.

[0006] In some optional implementations, the main frame includes an upper cover plate, a lower cover plate, an outer web plate, an inner web plate, a flange plate and an adjustment seat. The upper cover plate located at the top, the lower cover plate located at the bottom, the outer web plate located at the outside, the inner web plate located at the inside and the plugging plate located at the rear cooperate to form a main frame with a curved box beam structure. The adjustment seat is arranged at the lower part of the plugging plate and is hinged to the lower front end of the rear frame assembly.

[0007] In some optional implementations, the front frame assembly is connected to the upper cover plate of the main frame through the front suspension point and the column of the cabin, a second pin seat is provided at the rear of the front frame assembly, and a third pin seat is provided at the front upper part of the rear frame assembly, and a first pin passes through the second pin seat and the third pin seat to hinge the front upper part of the rear frame assembly to the rear of the front frame.

[0008] In some optional implementations, the adjustment seat includes a first pin seat, a fourth pin seat is provided at the lower front end of the rear frame assembly, and a second pin passes through the first pin seat and the fourth pin seat to hinge the front end tail of the rear frame assembly to the adjustment seat.

[0009] In some optional implementations, an adjustment seat mounting hole is provided on the plugging plate, the adjustment seat is provided in the adjustment seat mounting hole and is connected to the plugging plate by bolts, a plurality of adjustment pads in a petal pattern are filled between the adjustment seat and the plugging plate, the adjustment bolt is installed in the threaded hole of the adjustment seat and is abutted against the plugging plate, and when the angle of the rear frame assembly needs to be adjusted, the adjustment bolt is rotated to support the plugging plate and lift the rear frame assembly to rotate around the first pin shaft.

[0010] In some optional implementations, a frame mounting hole is provided on the bearing seat, a first mounting hole is provided on the main frame, and bolts pass through the frame mounting hole and the first mounting hole to fix the bearing seat on the main frame.

[0011] In some optional implementations, the first mounting hole is a threaded hole compatible with the bolt, and the rack mounting hole is a smooth hole with a hole diameter larger than a diameter of the bolt.

[0012] In some optional implementations, a second mounting hole is provided on the upper cover plate, the torque arm of the speed increaser is connected to the second mounting hole, and the elastic support is provided between the upper cover plate and the torque arm.

[0013] In some optional implementations, the rear frame assembly includes a truss-type steel structure located on both sides of the generator, and also includes cables located at the upper and lower parts for tightening the steel structures on both sides.

[0014] In some optional implementations, the front bracket and the rear bracket are bolted to the rear frame assembly.

[0015] The main advantages of the technical solution of the present invention are as follows:

[0016] In the nacelle of the wind turbine generator set of the present invention, the speed increaser is connected to the main frame through an elastic support, the main transmission system as a whole can rotate around the elastic support to a certain angle to adjust the elevation angle of the main shaft, and a pad can be provided between the bearing seat and the main frame, and a front bracket and a rear bracket can be provided between the generator and the rear frame assembly, and the bearing seat and the generator after the elevation angle changes are supported, and the elevation angle can be increased simply and quickly to meet the clearance requirements of different blades without replacing parts, thereby reducing costs. In addition, the rear frame assembly is hinged with the front frame assembly and the main frame, and the angle of the rear frame assembly can be adjusted to facilitate compensation for the deflection of the nacelle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the embodiments of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A front view of a nacelle of a wind turbine generator set provided by an embodiment of the present invention;

[0019] Figure 2 A top view of a nacelle of a wind turbine generator set provided in one embodiment of the present invention;

[0020] Figure 3 A schematic diagram of a wind turbine nacelle frame according to an embodiment of the present invention;

[0021] Figure 4 A cross-sectional view of a main transmission system of a nacelle of a wind turbine generator set provided by an embodiment of the present invention;

[0022] Figure 5 A front view of a bearing seat in a nacelle of a wind turbine generator set provided by an embodiment of the present invention;

[0023] Figure 6 A front view of a main frame in a nacelle of a wind turbine generator set provided by an embodiment of the present invention;

[0024] Figure 7 A top view of a main frame in a nacelle of a wind turbine generator set provided by an embodiment of the present invention;

[0025] Figure 8 A rear view of a main frame in a nacelle of a wind turbine generator set provided by an embodiment of the present invention;

[0026] Fig. 9A schematic diagram of a nacelle of a wind turbine generator set provided by an embodiment of the present invention when the elevation angle is A;

[0027] Fig.10 A schematic diagram of a nacelle of a wind turbine generator set provided in an embodiment of the present invention when the elevation angle is B.

[0028] Description of reference numerals:

[0029] 1 Main transmission system, 2 Main frame, 3 Front frame assembly, 4 Rear frame assembly;

[0030] 1 Main transmission system: 1-1 main shaft, 1-2 bearing assembly, 1-3 bearing seat, 1-4 elastic support, 1-5 speed increaser, 1-6 coupling, 1-7 brake, 1-8 generator, 1-9 first pad, 1-10 second pad, 1-11 third pad, 1-12 fourth pad;

[0031] 1-3 bearing seat: 1-3-1 rack mounting hole, 1-3-2 observation hole;

[0032] 1-5 speed increaser: 1-5-1 flange, 1-5-2 torque arm;

[0033] 2 Main frame: 2-1 upper cover plate, 2-2 lower cover plate, 2-3 outer web plate, 2-4 inner web plate, 2-5 flange plate, 2-6 plug plate, 2-7 adjustment seat;

[0034] 2-1 Upper cover: 2-1-1 first mounting hole, 2-1-2 second mounting hole, 2-1-3 third mounting hole, 2-1-4 fourth mounting hole;

[0035] 2-6 plug plate: 2-6-1 cable hole, 2-6-2 adjustment seat mounting hole;

[0036] 2-7 Adjustment seat: 2-7-1 first pin seat, 2-7-2 adjustment pad, 2-7-3 adjustment bolt;

[0037] 3 front frame assembly: 3-1 front frame, 3-2 column, 3-3 second pin seat, 3-4 cabin front hanging point;

[0038] 4 rear frame assembly: 4-1 rear frame, 4-2 third pin seat, 4-3 fourth pin seat, 4-4 cable, 4-5 first front bracket, 4-6 first rear bracket, 4-7 second front bracket, 4-8 second rear bracket, 4-9 first pin, 4-10 second pin, 4-11 cabin rear suspension point. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.

[0041] The embodiment of the present invention provides a wind turbine generator nacelle, as shown in the attached Figures 1 to 10 As shown, it includes: a main frame 2, a front frame assembly 3, a rear frame assembly 4, and a main transmission system 1; the main transmission system 1 includes: a main shaft 1-1, a bearing seat 1-3, a speed increaser 1-5, a coupling 1-6 and a generator 1-8; the bearing seat 1-3 is arranged at the front of the main frame 2, the speed increaser 1-5 is installed at the rear of the main frame 2 through an elastic support 1-4, the main shaft 1-1 passes through the bearing seat 1-3 and is connected to the front end of the speed increaser 1-5, the rear end of the speed increaser 1-5 is connected to the front end of the coupling 1-6, and the rear end of the coupling 1-6 is connected to the generator The generator 1-8 is connected to the main frame 2, and the generator 1-8 is arranged in the rear frame assembly 4; the front frame assembly 3 is arranged on the main frame 2, and the upper front end of the rear frame assembly 4 is hinged to the tail of the front frame assembly 3, and the lower front end of the rear frame assembly 4 is detachably hinged to the tail of the main frame 2 to complete the downward deflection correction; the bearing seat 1-3 and the main frame 2 are provided with a detachable pad for adjusting the elevation angle of the bearing seat 1-3; a height-adjustable front bracket and a rear bracket are provided between the generator 1-8 and the rear frame assembly 4 to adjust the angle of the generator 1-8.

[0042] The working principle of the wind turbine generator nacelle provided by the embodiment of the present invention is described below:

[0043] When in use, the impeller drives the main shaft 1-1 to rotate, and the rotation of the main shaft 1-1 is accelerated by the speed increaser 1-5, and then transmitted to the generator 1-8 through the coupling 1-6 to complete the power generation operation. In order to adapt to blades of different specifications, since the speed increaser 1-5 is connected to the main frame 2 through the elastic support 1-4, the speed increaser 1-5 can be rotated with the elastic support 1-4 as the center, thereby adjusting the overall elevation angle of the main transmission system 1. After the elevation angle increases, the spacing between the bearing seat 1-3 and the main frame 2 increases, so a pad is set to fill the gap between the bearing seat 1-3 and the main frame 2. When the main transmission system 1 rotates as a whole, the distance between the generator 1-8 located at the tail and the rear frame assembly 4 changes accordingly. Therefore, the generator 1-8 is supported by the front bracket and the rear bracket. By adjusting the length of the front bracket and the rear bracket, the angle of the generator 1-8 can be adjusted, or the angle change of the generator 1-8 can be adapted.

[0044] It can be seen that in the nacelle of the wind turbine generator set provided by the embodiment of the present invention, the speed increaser 1-5 is connected to the main frame 2 through the elastic support 1-4, the main transmission system 1 as a whole can rotate around the elastic support 1-4 to a certain angle to adjust the elevation angle of the main shaft 1-1, and a pad can be provided between the bearing seat 1-3 and the main frame 2, and a front bracket and a rear bracket can be provided between the generator 1-8 and the rear frame assembly 4. The bearing seat 1-3 and the generator 1-8 after the elevation angle changes are supported, and the elevation angle can be increased simply and quickly to meet the clearance requirements of different blades without replacing parts, thereby reducing costs. In addition, the rear frame assembly 4 is hinged with the front frame assembly 3 and the main frame 2, and the angle of the rear frame assembly 4 can be adjusted to compensate for the deflection of the nacelle.

[0045] Please see the attached Figure 4 In the main transmission system 1, a bearing assembly 1-2 may be provided between the main shaft 1-1 and the bearing seat 1-3, the main shaft 1-1 is connected to the bearing assembly 1-2, the bearing seat 1-3, and the flange 1-5-1 of the speed increaser 1-5, and the bearing seat 1-3 is connected to the main frame 2. The elastic support 1-4 is respectively connected to the torque arm 1-5-2 of the speed increaser 1-5 and the main frame 2. The contact surface between the torque arm 1-5-2 of the speed increaser 1-5 and the elastic support 1-4 may be an arc surface to facilitate the overall rotation of the main transmission system 1. The coupling 1-6 is connected between the speed increaser 1-5 and the generator 1-8, and the brake 1-7 is connected to the coupling 1-6 for braking.

[0046] The front frame assembly 3, the rear frame assembly 4 and the main frame 2 together form a truss structure, and through this spatial configuration, a high load-bearing capacity is achieved with a relatively small structural weight.

[0047] In some optional implementations of this embodiment, as shown in the attached Figure 6 and 7 As shown, the main frame 2 includes an upper cover plate 2-1, a lower cover plate 2-2, an outer web plate 2-3, an inner web plate 2-4, a flange plate 2-5 and an adjustment seat 2-7. The upper cover plate 2-1 located at the top, the lower cover plate 2-2 located at the bottom, the outer web plate 2-3 located at the outside, the inner web plate 2-4 located at the inside and the plug plate 2-6 located at the rear cooperate to form a main frame 2 of a curved box beam structure. The adjustment seat 2-7 is arranged at the bottom of the plug plate 2-6 and is hinged to the front lower part of the rear frame assembly 4. In this way, the main frame 2 forms a combined complex curved box beam structure, giving full play to the advantages of the box beam structure with large load-bearing capacity and material saving.

[0048] Optionally, a frame mounting hole 1-3-1 is provided on the bearing seat 1-3, a first mounting hole 2-1-1 is provided on the main frame 2, and bolts pass through the frame mounting hole 1-3-1 and the first mounting hole 2-1-1 to fix the bearing seat 1-3 on the main frame 2. Bolt connection facilitates installation and disassembly, and facilitates adjustment of the elevation angle of the bearing seat 1-3.

[0049] Furthermore, the first mounting hole 2-1-1 is a threaded hole adapted to the bolt, and the frame mounting hole 1-3-1 is a light hole with a hole diameter larger than the bolt diameter. With such an arrangement, when the elevation angle of the bearing seat 1-3 changes, the bolt can be installed smoothly even when the first mounting hole 2-1-1 and the frame mounting hole 1-3-1 are not completely aligned (the axes are not concentric).

[0050] The number and specifications of the pads can be set according to the spacing between the bearing seat 1-3 and the upper cover plate 2-1, as long as they can fill the wedge-shaped gap between the bearing seat 1-3 and the upper cover plate 2-1. In one embodiment, the first mounting hole 2-1-1 is arranged in two front and rear areas. Fig.10 The number of pads may be 4, the first pad 1-9 and the second pad 1-10 are located at the front first mounting hole 2-1-1, and the third pad 1-11 and the fourth pad 1-12 are located at the rear first mounting hole 2-1-1.

[0051] Optionally, see the attached Figure 5 The bearing seat 1-3 may also be provided with an observation hole 1-3-2 to facilitate the collection of waste bearing grease and reduce the weight of the bearing seat 1-3.

[0052] Optionally, a second mounting hole 2-1-2 is provided on the upper cover plate 2-1, the torque arm 1-5-2 of the speed increaser is connected to the second mounting hole 2-1-2, and the elastic support 1-4 is provided between the upper cover plate 2-1 and the torque arm 1-5-2.

[0053] Optionally, the upper cover plate 2-1 is further provided with a third mounting hole 2-1-3 and a fourth mounting hole 2-1-4, the front suspension point 3-4 of the front frame assembly 3 is connected to the upper cover plate 2-1 through the third mounting hole 2-1-3, and the column 3-2 of the front frame assembly 3 is connected to the upper cover plate 2-1 through the fourth mounting hole 2-1-4. Figure 7 The first mounting hole 2-1-1, the second mounting hole 2-1-2, the third mounting hole 2-1-3 and the fourth mounting hole 2-1-4 are distributed in sequence from front to back.

[0054] Please see attached Figure 2 and attached Figure 3The front frame assembly 3 includes a front frame 3-1, which is connected to the upper cover plate 2-1 of the main frame 2 through the front suspension point 3-4 and the column 3-2 of the cabin. The tail of the front frame 3-1 is provided with a second pin shaft seat 3-3, and the front upper part of the rear frame assembly 4 is provided with a third pin shaft seat 4-2. The first pin shaft 4-9 passes through the second pin shaft seat 3-3 and the third pin shaft seat 4-2 to hinge the front upper part of the rear frame assembly 4 with the tail of the front frame. In this way, after the rear frame assembly 4 is disconnected from the main frame 2, it can rotate around the first pin shaft 4-9 to the target angle to compensate for the cabin deflection.

[0055] Optionally, see the attached Figure 2 and attached Figure 3 The adjustment seat 2-7 includes a first pin seat 2-7-1, and a fourth pin seat 4-3 is provided at the lower front end of the rear frame assembly 4. The second pin 4-10 passes through the first pin seat 2-7-1 and the fourth pin seat 4-3 to hinge the front end tail of the rear frame assembly 4 with the adjustment seat 2-7.

[0056] Furthermore, an adjustment seat mounting hole 2-6-2 is provided on the plugging plate 2-6, the adjustment seat 2-7 is arranged in the adjustment seat mounting hole 2-6-2 and is connected to the plugging plate 2-6 by bolts, and a plurality of adjustment pads 2-7-2 in a petal pattern are filled between the adjustment seat 2-7 and the plugging plate 2-6, and the adjustment bolt 2-7-3 is installed in the threaded hole of the adjustment seat 2-7 and is abutted against the plugging plate 2-6. When it is necessary to adjust the angle of the rear frame assembly 4, the adjustment bolt 2-7-3 is rotated to support the plugging plate 2-6 and lift the rear frame assembly 4 to rotate around the first pin shaft 4-9.

[0057] Optionally, a cable hole 2-6-1 may be provided on the plug plate 2-6 for arranging cables from the cabin to the bottom of the tower.

[0058] Optionally, the front bracket and the rear bracket are connected to the rear frame assembly 4 by bolts, so as to facilitate the replacement of the front bracket and the rear bracket to different lengths. Fig. 9 The figure shows the state where the generator 1-8 is supported by the first front bracket 4-5 and the first rear bracket 4-6, and the elevation angle of the main transmission system 1 is A. After the elevation angle increases to angle B, the generator 1-8 is supported by the replaced second front bracket 4-7 and the second rear bracket 4-8.

[0059] In this embodiment, a large maintenance space is reserved on the upper and lower surfaces of the front part of the rear frame 4-1. In order to compensate for the overall rigidity, an adjustable cable 4-4 is used to tighten the truss steel structure on the left and right sides, which not only improves the rigidity but also makes the frame lightweight. The frame can also be arranged with structures such as a crane, a nacelle cover support point, and a nacelle rear suspension point 4-11.

[0060] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A nacelle of a wind turbine generator set, characterized in that: include: Main frame, front frame assembly, rear frame assembly, main transmission system; The main transmission system includes: a main shaft, a bearing seat, a speed increaser, a coupling and a generator; The bearing seat is arranged at the front part of the main frame, the speed increaser is installed at the rear part of the main frame through elastic support, the main shaft passes through the bearing seat and is connected to the front end of the speed increaser, the rear end of the speed increaser is connected to the front end of the coupling, the rear end of the coupling is connected to the generator, and the generator is arranged in the rear frame assembly; The front frame assembly is arranged on the main frame, and the front upper portion of the rear frame assembly is hinged to the rear portion of the front frame assembly, and the front lower portion of the rear frame assembly is detachably hinged to the rear portion of the main frame, so as to complete the deflection correction; The bearing seat and the main frame are provided with a detachable pad for adjusting the elevation angle of the bearing seat; A height-adjustable front bracket and a rear bracket are provided between the generator and the rear frame assembly for adjusting the angle of the generator; The main frame includes an upper cover plate, a lower cover plate, an outer web plate, an inner web plate, a flange plate and an adjustment seat. The upper cover plate located at the top, the lower cover plate located at the bottom, the outer web plate located at the outside, the inner web plate located at the inside and the plug plate located at the rear cooperate to form a main frame of a curved box beam structure. The adjustment seat is arranged at the lower part of the plug plate and is hinged to the lower part of the front end of the rear frame assembly. The front frame assembly is connected to the upper cover plate of the main frame through the front suspension point and the column of the cabin, the tail of the front frame assembly is provided with a second pin shaft seat, the front upper part of the rear frame assembly is provided with a third pin shaft seat, and the first pin shaft passes through the second pin shaft seat and the third pin shaft seat to hinge the front upper part of the rear frame assembly with the tail of the front frame; The adjustment seat includes a first pin seat, a fourth pin seat is provided at the lower front end of the rear frame assembly, and a second pin passes through the first pin seat and the fourth pin seat to hinge the front end tail of the rear frame assembly with the adjustment seat; An adjustment seat mounting hole is provided on the plugging plate, the adjustment seat is arranged in the adjustment seat mounting hole and is connected to the plugging plate by bolts, a plurality of adjustment pads in a petal pattern are filled between the adjustment seat and the plugging plate, the adjustment bolt is installed in the threaded hole of the adjustment seat and abuts against the plugging plate, and when the angle of the rear frame assembly needs to be adjusted, the adjustment bolt is rotated to support the plugging plate and lift the rear frame assembly to rotate around the first pin shaft.

2. The wind turbine nacelle according to claim 1, characterized in that: The bearing seat is provided with a frame mounting hole, the main frame is provided with a first mounting hole, and bolts pass through the frame mounting hole and the first mounting hole to fix the bearing seat on the main frame.

3. The wind turbine generator nacelle according to claim 2, characterized in that: The first mounting hole is a threaded hole matched with the bolt, and the rack mounting hole is a smooth hole with a hole diameter larger than the bolt diameter.

4. The nacelle of the wind turbine generator set according to claim 3, characterized in that: The upper cover plate is provided with a second mounting hole, the torque arm of the speed increaser is connected to the second mounting hole, and the elastic support is provided between the upper cover plate and the torque arm.

5. The nacelle of the wind turbine generator set according to claim 3, characterized in that: The rear frame assembly includes truss-type steel structures respectively located on both sides of the generator, and also includes cables located at the upper and lower parts for tightening the steel structures on both sides.

6. The wind turbine generator nacelle according to claim 1, characterized in that: The front bracket and the rear bracket are bolted to the rear frame assembly.

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