Wind turbine main frame and wind turbine

Abstract

The application relates to the technical field of wind driven generators, and provides a wind driven generator main frame and a wind driven generator, wherein the wind driven generator main frame comprises a main frame body, a first mounting base and a second mounting base, the main frame body is provided with a first mounting position and a second mounting position; the first mounting base is used for fixed connection with a bearing seat, the first mounting base is detachably arranged at the first mounting position, the position of the first mounting base at the first mounting position can be adjusted at least along a first direction, the first direction is perpendicular to the axial direction of the bearing seat and perpendicular to the supporting direction of the first mounting position to the first mounting base; the second mounting base is used for fixed connection with a gear box, the second mounting base is detachably arranged at the second mounting position, and the position of the second mounting base at the second mounting position can be adjusted at least along the first direction. In this way, the problems of long design and development period and high cost caused by the need of redesigning the main frame and the mold during the upgrading of the wind driven generator in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power generators, in particular to a wind power generator main frame and a wind power generator. BACKGROUND

[0002] The wind power generator is a device for converting wind energy into mechanical energy and then into electrical energy, which mainly includes blades, a hub, a nacelle and a tower, etc. The nacelle is provided with a main frame for supporting a main shaft, a bearing seat, a gear box and a yaw system, etc. The main frame is rotationally connected with the tower to allow the nacelle to rotate relative to the tower.

[0003] The wind power generator is rapidly updated, and different specifications of wind power generators require different installation positions of bearing seats and gear boxes.

[0004] The main frame in the prior art is integrally cast as a whole, and the main frame is provided with an installation surface for installing the bearing seat and the gear box. For the same main frame, only a single installation position can be provided for the bearing seat and the gear box, which has poor universality and poor expandability. When the wind power generator is updated, the main frame needs to be redesigned, which prolongs the design and development cycle and increases the cost due to the need to redesign and manufacture corresponding molds.

[0005] Therefore, how to solve the problems of poor expandability of the wind power generator main frame in the prior art, long design and development cycle and high cost caused by the need to redesign the main frame and the mold when the wind power generator is updated has become an important technical problem to be solved by the technical personnel in the field. SUMMARY

[0006] The present application provides a wind power generator main frame and a wind power generator to solve the defects of poor expandability of the wind power generator main frame in the prior art, long design and development cycle and high cost caused by the need to redesign the main frame and the mold when the wind power generator is updated.

[0007] The present application provides a wind power generator main frame, comprising:

[0008] A main frame body, a first end of the main frame body is arranged to be rotationally connected with a tower, and a second end of the main frame body is provided with a first installation position and a second installation position;

[0009] A first installation seat for fixedly connecting with a bearing seat, the first installation seat is detachably arranged at the first installation position of the main frame body, and the first installation seat is adjustable in position along a first direction at the first installation position, the first direction is perpendicular to an axial direction of the bearing seat, and the first direction is perpendicular to a supporting direction of the first installation position to the first installation seat;

[0010] A second mounting seat is fixedly connected with the gear box, and is detachably arranged at the second mounting position of the main frame body, and the position of the second mounting seat at the second mounting position is adjustable at least in the first direction.

[0011] According to the wind power generator main frame provided by the application, the position of the first mounting seat at the first mounting position is also adjustable in the axial direction of the bearing seat;

[0012] And / or, the position of the first mounting seat at the first mounting position is also adjustable in the support direction of the first mounting seat at the first mounting position;

[0013] And / or, the position of the second mounting seat at the second mounting position is also adjustable in the axial direction of the bearing seat;

[0014] And / or, the position of the second mounting seat at the second mounting position is also adjustable in the support direction of the second mounting seat at the second mounting position.

[0015] According to the wind power generator main frame provided by the application, one of the first mounting seat and the main frame body is provided with at least two groups of first connecting holes, and the other is provided with a second connecting hole, each group of the first connecting holes is distributed in the axial direction of the bearing seat, each group of the first connecting holes is distributed in the support direction of the first mounting seat at the first mounting position, and the second connecting hole is arranged to correspond to at least one of the first connecting holes.

[0016] One of the second mounting seat and the main frame body is provided with at least two groups of third connecting holes, and the other is provided with a fourth connecting hole, each group of the third connecting holes is distributed in the axial direction of the bearing seat, each group of the third connecting holes is distributed in the support direction of the second mounting seat at the second mounting position, and the fourth connecting hole is arranged to correspond to at least one of the third connecting holes.

[0017] According to the wind power generator main frame provided by the application, the first mounting seat comprises:

[0018] A first support part is arranged opposite to the first mounting position, and is arranged to be connected with the bearing seat;

[0019] A first connecting part is arranged on one side of the first support part close to the main frame body, and the first connecting hole is arranged on the first connecting part, and the first connecting part is connected with the first support part;

[0020] The second mounting seat comprises:

[0021] The second support part is arranged opposite to the second mounting position and is arranged to be connected with the gear box.

[0022] The second connecting part is arranged on one side of the second support part close to the main frame body, the third connecting hole is arranged on the second connecting part, and the second connecting part is connected with the second support part.

[0023] According to the wind power generator main frame provided by the application, the first mounting positions are arranged in pairs, each pair of the first mounting positions is distributed at intervals, the distribution direction of each pair of the first mounting positions is perpendicular to the axial direction of the bearing seat, and the first mounting seat corresponds to the first mounting position in one-to-one manner.

[0024] The second mounting positions are arranged in pairs, each pair of the second mounting positions is distributed at intervals, the distribution direction of each pair of the second mounting positions is consistent with the distribution direction of each pair of the first mounting positions, and the second mounting seat corresponds to the second mounting position in one-to-one manner.

[0025] According to the wind power generator main frame provided by the application, the first mounting positions are arranged in pairs, each pair of the first mounting positions is distributed at intervals, the distribution direction of each pair of the first mounting positions is perpendicular to the axial direction of the bearing seat, and the first mounting seat corresponds to the first mounting position in one-to-one manner.

[0026] According to the wind power generator main frame provided by the application, the second end of the main frame body is formed with a avoiding space, the avoiding space is arranged to avoid the bearing seat, the gear box and the main shaft.

[0027] According to the wind power generator main frame provided by the application, the first mounting positions and the second mounting positions are arranged on the second end of the frame body.

[0028] The connecting frame is arranged on the first end of the frame body, the connecting frame is detachably connected with the frame body, and the connecting frame is arranged to be connected with the yaw slewing bearing.

[0029] The application further provides a wind power generator main frame, which comprises:

[0030] The main frame body is arranged to be rotationally connected with the tower drum at the first end of the main frame body, and the first mounting position and the second mounting position are arranged at the second end of the main frame body.

[0031] The first mounting seat is used for fixedly connecting with the bearing seat, the first mounting seat is detachably arranged on the first mounting position of the main frame body, and the position of the first mounting seat on the first mounting position is adjustable at least in the axial direction of the bearing seat.

[0032] A second mounting seat is used for fixed connection with the gear box, and is detachably arranged at the second mounting position of the main frame body, and the position of the second mounting seat at the second mounting position is at least adjustable along the axial direction of the bearing seat.

[0033] The application further provides a wind power generator comprising the wind power generator main frame.

[0034] The wind power generator main frame comprises a main frame body, a first mounting seat and a second mounting seat. The first end of the main frame body is used for rotational connection with a tower tube, so as to allow the nacelle to rotate relative to the tower tube. The second end of the main frame body is provided with a first mounting position and a second mounting position. The first mounting seat is detachably arranged at the first mounting position of the main frame body, and the position of the first mounting seat at the first mounting position is at least adjustable along a first direction. The first direction is perpendicular to the axial direction of the bearing seat, and the first direction is perpendicular to the supporting direction of the first mounting position to the first mounting seat. The second mounting seat is detachably arranged at the second mounting position of the main frame body, and the position of the second mounting seat at the second mounting position is at least adjustable along the first direction. The first mounting seat is used for fixed connection with the bearing seat, and the second mounting seat is used for fixed connection with the gear box. In this way, the first mounting seat and the second mounting seat are arranged separately from the main frame body, so that the bearing seat and the gear box are respectively assembled and connected to the first mounting position and the second mounting position of the main frame body through the first mounting seat and the second mounting seat. By selecting different sizes of the first mounting seat and the second mounting seat, or by adjusting the relative positions of the first mounting seat and the first mounting position and the relative positions of the second mounting seat and the second mounting position along the first direction when the first mounting seat and the second mounting seat are connected to the main frame body, the main frame body can be adapted to the installation of different types of bearing seats and gear boxes, and has strong expandability. When the wind power generator is updated, the structure size of the main frame body and the mold does not need to be redesigned, the design and development period is shortened, the cost is reduced, and the problems of long design and development period and high cost caused by the need to redesign the main frame and the mold in the prior art are solved.

[0035] Further, in the wind power generator provided by the application, since the wind power generator main frame is provided, the various advantages described above are also provided. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0037] Figure 1 is a structural schematic view of a main frame of a wind driven generator provided by the present application;

[0038] Figure 2 is an exploded schematic view of the main frame of the wind driven generator provided by the present application;

[0039] Figure 3 is a structural schematic view of a main frame body provided by the present application;

[0040] Figure 4 is a structural schematic view of a first mounting seat provided by the present application (a first mounting hole is not shown in the figure);

[0041] Figure 5 is a structural schematic view of a second mounting seat provided by the present application (a second mounting hole is not shown in the figure);

[0042] Figure 6 is a structural schematic view of a connecting frame provided by the present application.

[0043] Reference signs:

[0044] 1, main frame body; 2, first mounting position; 3, second mounting position; 4, first mounting seat; 5, second mounting seat; 6, first connecting hole; 7, second connecting hole; 8, third connecting hole; 9, fourth connecting hole; 10, first supporting part; 11, first connecting part; 12, second supporting part; 13, second connecting part; 14, avoiding space; 15, frame body; 16, connecting frame; 17, fifth connecting hole; 18, sixth connecting hole; 19, seventh connecting hole; 20, eighth connecting hole. DETAILED DESCRIPTION

[0045] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0046] The main frame of the wind driven generator in the prior art is integrally cast as a whole. The mounting surface for mounting the bearing seat and the gear box is arranged on the main frame of the wind driven generator, and the bearing seat and the gear box are directly fixed on the mounting surface. The mounting surface is integrally formed with the main frame of the wind driven generator. For the same main frame, the position of the mounting surface for mounting the bearing seat and the gear box is fixed, and only a single mounting position can be provided for the bearing seat and the gear box.

[0047] Applicant finds through a large number of researches that wind driven generators are updated rapidly, and in the process of updating, the bearing seat and the gear box required by wind driven generators of different specifications are of different models, the span of bearing seats of different models is different, and the span of gear boxes of different models is also different. Moreover, the installation distance between the gear box and the bearing seat of wind driven generators of different specifications is also different.

[0048] The main frame of the wind driven generator in the prior art cannot be applied to wind driven generators of different specifications, and in the process of updating the wind driven generators, the structure size of the main frame of the wind driven generator, especially the position of the installation surface for installing the bearing seat and the gear box, needs to be updated synchronously, and accordingly, the mold for machining the main frame of the wind driven generator needs to be redesigned, which is not only long in design and development cycle, but also high in cost.

[0049] The embodiment of the present application can make the same main frame of the wind driven generator adapt to the installation of bearing seats and gear boxes of different models, thereby adapting to wind driven generators of different specifications, by improving the structure of the main frame of the wind driven generator, so that the improvement of the main frame of the wind driven generator and the mold thereof can be reduced in the process of updating the wind driven generators, which is beneficial to shorten the design and development cycle and reduce the cost.

[0050] The wind driven generator main frame of the present application will be described below in combination with Figures 1 to 6 The wind driven generator main frame of the present application will be described below in combination with

[0051] As shown in Figures 1 to 6 The wind driven generator main frame provided by the embodiment of the present application comprises a main frame body 1, a first mounting seat 4 and a second mounting seat 5.

[0052] The main frame body 1 is arranged in a cabin, and the main frame body 1 is fixed relative to the cabin. The first end of the main frame body 1 can be rotationally connected with a tower tube to allow the cabin to rotate relative to the tower tube. Generally, the main frame body 1 is arranged above the tower tube, and at this time, the first end of the main frame body 1 is located below the second end of the main frame body 1.

[0053] As shown in Figure 3 The first mounting position 2 and the second mounting position 3 are arranged at the second end of the main frame body 1.

[0054] The first mounting seat 4 is detachably arranged at the first mounting position 2 of the main frame body 1, and the first mounting seat 4 is fixedly connected with the bearing seat to support and fix the bearing seat by means of the first mounting seat 4.

[0055] For the convenience of description, it is defined that the direction perpendicular to the axial direction of the bearing seat and also perpendicular to the support direction of the first mounting seat 4 by the first mounting position 2 is the first direction.

[0056] When the first mounting seat 4 is arranged at the first mounting position 2 of the mainframe body 1, the first mounting seat 4 needs to be adjustable at least in the first direction at the position of the first mounting position 2.

[0057] The first mounting seat 4 and the mainframe body 1 are two separately produced parts. Before the first mounting seat 4 and the mainframe body 1 are fixed together, the position of the first mounting seat 4 on the first mounting position 2 of the mainframe body 1 needs to be determined according to the span of the bearing seat.

[0058] The second mounting seat 5 is detachably arranged at the second mounting position 3 of the mainframe body 1, and the second mounting seat 5 is fixedly connected with the gear box to support and fix the gear box by the second mounting seat 5.

[0059] When the second mounting seat 5 is arranged at the second mounting position 3 of the mainframe body 1, the second mounting seat 5 needs to be adjustable at least in the first direction at the position of the second mounting position 3.

[0060] The second mounting seat 5 and the mainframe body 1 are two separately produced parts. Before the second mounting seat 5 and the mainframe body 1 are fixedly welded together, the position of the second mounting seat 5 on the second mounting position 3 of the mainframe body 1 needs to be determined according to the span of the gear box.

[0061] In this way, the first mounting seat 4 and the mainframe body 1 are separately arranged, and the second mounting seat 5 and the mainframe body 1 are separately arranged, so that the bearing seat and the gear box are respectively assembled and connected to the first mounting position 2 and the second mounting position 3 of the mainframe body 1 through the first mounting seat 4 and the second mounting seat 5. By selecting different sizes of the first mounting seat 4 and the second mounting seat 5, or adjusting the relative positions of the first mounting seat 4 and the first mounting position 2 and the relative positions of the second mounting seat 5 and the second mounting position 3 in the first direction when the first mounting seat 4 and the second mounting seat 5 are connected to the mainframe body 1, the mainframe body 1 can be adapted to the installation of different types of bearing seats and gear boxes, and has strong expandability. When the wind turbine is updated, the structure size of the mainframe body 1 and the mold does not need to be redesigned, the design and development period is shortened, the cost is reduced, and the problem of long design and development period and high cost caused by the need to redesign the mainframe and the mold in the prior art when the wind turbine is updated is solved.

[0062] In addition, the first mounting seat 4 and the mainframe body 1 are separately arranged, and the second mounting seat 5 and the mainframe body 1 are separately arranged, which facilitates processing and can separately transport the first mounting seat 4, the second mounting seat 5 and the mainframe body 1, facilitates handling and transportation, and can reduce the requirements on the transportation equipment.

[0063] In some embodiments, the first mounting seat 4 and the main frame body 1 can be fixedly connected together by welding, and the second mounting seat 5 and the main frame body 1 can be fixedly connected together by welding.

[0064] At this time, the first mounting seat 4 and the second mounting seat 5 can be made of steel plates, which are fixed on the main frame body 1 by welding or other methods, and then the bearing seat and the gear box are fixedly connected with the corresponding steel plates.

[0065] In the embodiment of the application, the position of the first mounting seat 4 at the first mounting position 2 is also adjustable along the axial direction of the bearing seat. By adjusting the position of the first mounting seat 4 along the axial direction of the bearing seat, the distance between the first mounting seat 4 and the second mounting seat 5 can be adjusted to meet the installation distance requirement between the bearing seat and the gear box.

[0066] The position of the first mounting seat 4 at the first mounting position 2 is also adjustable along the support direction of the first mounting seat 4 by the first mounting position 2. By adjusting the position of the first mounting seat 4 along the support direction of the first mounting seat 4 by the first mounting position 2, the support height of the first mounting seat 4 to the bearing seat can be adjusted, and different installation heights can be provided for the bearing seat.

[0067] Correspondingly, the position of the second mounting seat 5 at the second mounting position 3 is also adjustable along the axial direction of the bearing seat. By adjusting the position of the second mounting seat 5 along the axial direction of the bearing seat, the distance between the second mounting seat 5 and the first mounting seat 4 can be adjusted to meet the installation distance requirement between the bearing seat and the gear box.

[0068] The position of the second mounting seat 5 at the second mounting position 3 is also adjustable along the support direction of the second mounting seat 5 by the second mounting position 3. By adjusting the position of the second mounting seat 5 along the support direction of the second mounting seat 5 by the second mounting position 3, the support height of the second mounting seat 5 to the gear box can be adjusted, and different installation heights can be provided for the gear box.

[0069] In the embodiment, a first connecting hole 6 is arranged on one of the first mounting seat 4 and the main frame body 1, and a second connecting hole 7 is arranged on the other. The first connecting hole 6 is arranged in at least two groups, each group of first connecting holes 6 is distributed along the axial direction of the bearing seat, and each group of first connecting holes 6 is distributed along the support direction of the first mounting seat 4 by the first mounting position 2. By adjusting the relative position of the first mounting seat 4 and the main frame body 1, the second connecting hole 7 can be opposite to any first connecting hole 6, and the first mounting seat 4 and the main frame body 1 can be connected together by penetrating the opposite first connecting hole 6 and the second connecting hole 7 with a bolt.

[0070] By making the second connecting hole 7 opposite to different groups of first connecting holes 6, the height of the first mounting seat 4 to the bearing seat can be adjusted, thereby providing different support heights for the bearing seat.

[0071] The second connecting hole 7 is opposite to the first connecting hole 6 in different positions in the same group, the distance between the first mounting seat 4 and the second mounting seat 5 can be adjusted, and then the distance between the bearing seat and the gear box is adjusted.

[0072] The above-mentioned second connecting hole 7 can be provided only one, or the second connecting hole 7 can be provided in groups.

[0073] When only one second connecting hole 7 is provided, the second connecting hole 7 can correspond to any one of the first connecting hole 6.

[0074] When a group of second connecting holes 7 are provided, the distribution direction of the second connecting hole 7 is consistent with the distribution direction of the first connecting hole 6, each group of first connecting holes 6 and each group of second connecting holes 7 are evenly distributed, and the spacing between adjacent second connecting holes 7 is equal to the spacing between adjacent first connecting holes 6.

[0075] When at least two groups of second connecting holes 7 are provided, the distribution direction of each group of second connecting holes 7 is consistent with the distribution direction of each group of first connecting holes 6, the spacing between adjacent two groups of second connecting holes 7 is equal to the spacing between adjacent two groups of first connecting holes 6, the distribution direction of each group of second connecting holes 7 is consistent with the distribution direction of each group of first connecting holes 6, each group of first connecting holes 6 and each group of second connecting holes 7 are evenly distributed, and the spacing between adjacent second connecting holes 7 is equal to the spacing between adjacent first connecting holes 6.

[0076] The above-mentioned first connecting hole 6 and second connecting hole 7 are threaded holes.

[0077] Similarly, a third connecting hole 8 is provided in one of the second mounting seat 5 and the main rack body 1, and a fourth connecting hole 9 is provided on the other. The third connecting hole 8 is provided in at least two groups, each group of third connecting holes 8 is distributed along the axial direction of the bearing seat, and each group of third connecting holes 8 is distributed along the support direction of the second mounting seat 5 to the second mounting seat 5. By adjusting the relative position of the second mounting seat 5 and the main rack body 1, the fourth connecting hole 9 can be opposite to any third connecting hole 8, and by using a bolt to pass through the opposite third connecting hole 8 and fourth connecting hole 9, the second mounting seat 5 and the main rack body 1 can be connected together.

[0078] The fourth connecting hole 9 is opposite to the third connecting hole 8 in different groups, the height of the second mounting seat 5 to the gear box can be adjusted, and different support heights can be provided for the gear box.

[0079] The fourth connecting hole 9 is opposite to the third connecting hole 8 in different positions in the same group, the distance between the second mounting seat 5 and the second mounting seat 5 can be adjusted, and then the distance between the gear box and the bearing seat is adjusted.

[0080] The fourth connecting hole 9 can be provided in one group.

[0081] When only one fourth connecting hole 9 is provided, the fourth connecting hole 9 can correspond to any one of the third connecting holes 8.

[0082] When the fourth connecting holes 9 are provided in one group, the distribution direction of the fourth connecting holes 9 is consistent with the distribution direction of the third connecting holes 8, each group of the third connecting holes 8 and each group of the fourth connecting holes 9 are uniformly distributed, and the interval between adjacent fourth connecting holes 9 is equal to the interval between adjacent third connecting holes 8.

[0083] When the fourth connecting holes 9 are provided in at least two groups, the distribution direction of each group of the fourth connecting holes 9 is consistent with the distribution direction of each group of the third connecting holes 8, the interval between adjacent two groups of the fourth connecting holes 9 is equal to the interval between adjacent two groups of the third connecting holes 8, the distribution direction of each group of the fourth connecting holes 9 is consistent with the distribution direction of each group of the third connecting holes 8, each group of the third connecting holes 8 and each group of the fourth connecting holes 9 are uniformly distributed, and the interval between adjacent fourth connecting holes 9 is equal to the interval between adjacent third connecting holes 8.

[0084] The third connecting hole 8 and the fourth connecting hole 9 are threaded holes.

[0085] In order to facilitate connection, in the embodiment, the first mounting seat 4 and the second mounting seat 5 are provided in the structure of a "T" type flange.

[0086] Specifically, the first mounting seat 4 includes a first supporting part 10 and a first connecting part 11, the first supporting part 10 is provided opposite to the first mounting position 2, the first connecting part 11 is provided on the side of the first supporting part 10 close to the main rack body 1, and the first connecting part 11 is connected with the first supporting part 10, as shown in Figure 4 .

[0087] At this time, the first connecting part 11 is located on one side of the main rack body 1, the first connecting hole 6 can be arranged on the first connecting part 11, and the second connecting hole 7 can be arranged on the side surface of the main rack body 1.

[0088] The first mounting hole is arranged on the first supporting part 10 and used for connecting with the bearing seat.

[0089] Similarly, the second mounting seat 5 includes a second supporting part 12 and a second connecting part 13, the second supporting part 12 is provided opposite to the second mounting position 3, the second connecting part 13 is provided on the side of the second supporting part 12 close to the main rack body 1, and the second connecting part 13 is connected with the second supporting part 12, as shown in Figure 5 .

[0090] At this time, the second connecting part 13 is located at one side of the main frame body 1, the third connecting hole 8 is arranged on the second connecting part 13, and the fourth connecting hole 9 is arranged on the side of the main frame body 1.

[0091] The second mounting hole is arranged on the second supporting part 12 and used for connecting with the gear box.

[0092] Specifically, the steel plate can be selected as the first supporting part 10, the first connecting part 11, the second supporting part 12 and the second connecting part 13, the first connecting part 11 is perpendicular to the first supporting part 10, and the second connecting part 13 is perpendicular to the second supporting part 12.

[0093] In the embodiment, the first mounting positions 2 are arranged in pairs, each pair of the first mounting positions 2 is distributed at intervals, and the distribution direction of each pair of the first mounting positions 2 is perpendicular to the axial direction of the bearing seat. The first mounting seats 4 are also arranged in pairs, and the first mounting seats 4 correspond to the first mounting positions 2 one by one. By adjusting the relative positions of the first mounting seats 4 and the first mounting positions 2, the distance between each pair of the first mounting seats 4 can be adjusted to adapt to the installation of bearing seats with different spans.

[0094] The second mounting positions 3 are arranged in pairs, each pair of the second mounting positions 3 is distributed at intervals, and the distribution direction of each pair of the second mounting positions 3 is consistent with the distribution direction of each pair of the first mounting positions 2. The second mounting seats 5 are also arranged in pairs, and the second mounting seats 5 correspond to the second mounting positions 3 one by one. By adjusting the relative positions of the second mounting seats 5 and the second mounting positions 3, the distance between each pair of the second mounting seats 5 can be adjusted to adapt to the installation of gear boxes with different spans.

[0095] By adjusting the distance between the first mounting seats 4 and the second mounting seats 5, the distance between the bearing seat and the gear box can also be adjusted.

[0096] In a further embodiment, the above-mentioned first mounting positions 2 are arranged in two pairs, the two pairs of the first mounting positions 2 are distributed at intervals, and the distribution direction of the two pairs of the first mounting positions 2 is parallel to the axial direction of the bearing seat. Correspondingly, the first mounting seats 4 are also arranged in two pairs, and the two pairs of the first mounting seats 4 are arranged on the bearing seat and support the two ends of the main shaft respectively.

[0097] By adjusting the distance between the two pairs of the first mounting seats 4 and the second mounting seats 5, the installation of the main shaft with different lengths can be adapted.

[0098] The connecting flange is arranged on the bearing seat and used for connecting with the first supporting part 10. The connecting flange can be arranged at the bottom end of the bearing seat or at the middle part of the bearing seat.

[0099] Correspondingly, the connecting flange is also arranged on the gear box and used for connecting with the second supporting part 12. The connecting flange can be arranged at the bottom end of the gear box or at the middle part of the gear box.

[0100] When the connecting flange is located in the middle of the bearing housing and the gearbox, a clearance space 14 needs to be provided at the second end of the main frame body 1 to allow the bearing housing, gearbox and spindle to pass through, so as to prevent interference with the bearing housing, gearbox and spindle.

[0101] In this embodiment of the invention, the main frame 1 is configured as two detachably connected parts, including a frame 15 and a connecting frame 16. A first mounting position 2 and a second mounting position 3 are located at the second end of the frame 15, and the connecting frame 16 is located at the first end of the frame 15, and the connecting frame 16 is detachably connected to the frame 15.

[0102] A yaw slewing bearing is provided at the upper end of the tower. The connecting frame 16 is connected to the yaw slewing bearing so that the main frame body 1 can rotate relative to the tower.

[0103] Different specifications of wind turbines use different diameter yaw bearings, and therefore require different sizes of connecting brackets 16. In this embodiment, the connecting bracket 16 can be replaced; a suitable connecting bracket 16 can be selected to connect with the frame 15 without redesigning the entire main frame 1, which helps to shorten the design and development cycle. Moreover, the frame 15 and the connecting bracket 16 are two separately manufactured parts. Even if the connecting bracket 16 and its mold need to be redesigned, the mold for the frame 15 can still be used, which helps to reduce costs.

[0104] Furthermore, the frame 15 and connecting frame 16 can be manufactured separately, which reduces the requirements for machine tool travel and facilitates processing. They can also be transported separately, reducing the requirements for transportation equipment and lowering transportation costs.

[0105] In this embodiment, the frame 15 and the connecting frame 16 are connected together by bolts.

[0106] Multiple fifth connection holes 17 are provided on the connecting frame 16, and the multiple fifth connection holes 17 are distributed along the circumference of the yaw slewing bearing, such as... Figure 6 As shown. Correspondingly, a sixth connecting hole 18 is provided on the frame 15, which corresponds one-to-one with the fifth connecting hole 17. By using bolts passing through the fifth connecting hole 17 and the sixth connecting hole 18, the connecting frame 16 can be fixedly connected to the frame 15.

[0107] A seventh connecting hole 19 is provided at the first end of the frame 15 and below the second mounting position 3, and an eighth connecting hole 20 is provided at the corresponding position of the connecting frame 16, such as... Figure 3 and Figure 6As shown, the seventh connecting hole 19 corresponds to the eighth connecting hole 20 one by one. By using bolts to pass through the seventh connecting hole 19 and the eighth connecting hole 20, the connecting strength between the connecting frame 16 and the frame body 15 can be further increased.

[0108] In another aspect, the embodiment of the present application also provides a main frame of a wind power generator, which comprises a main frame body 1, a first mounting seat 4 and a second mounting seat 5.

[0109] As shown, the first mounting seat 4 is detachably arranged at the first mounting position 2 of the main frame body 1, and the first mounting seat 4 is fixedly connected with the bearing seat, so as to support and fix the bearing seat by using the first mounting seat 4. Figure 3

[0110] The first mounting seat 4 is arranged at the first mounting position 2 of the main frame body 1, and the first mounting seat 4 is fixedly connected with the bearing seat, so as to support and fix the bearing seat by using the first mounting seat 4.

[0111] The first mounting seat 4 is arranged at the first mounting position 2 of the main frame body 1, and the first mounting seat 4 is fixedly connected with the bearing seat, so as to support and fix the bearing seat by using the first mounting seat 4.

[0112] The first mounting seat 4 is arranged at the first mounting position 2 of the main frame body 1, and the first mounting seat 4 is fixedly connected with the bearing seat, so as to support and fix the bearing seat by using the first mounting seat 4.

[0113] The second mounting seat 5 is detachably arranged at the second mounting position 3 of the main frame body 1, and the second mounting seat 5 is fixedly connected with the gear box, so as to support and fix the gear box by using the second mounting seat 5.

[0114] The second mounting seat 5 is arranged at the second mounting position 3 of the main frame body 1, and the second mounting seat 5 is fixedly connected with the gear box, so as to support and fix the gear box by using the second mounting seat 5.

[0115] The second mounting seat 5 is arranged at the second mounting position 3 of the main frame body 1, and the second mounting seat 5 is fixedly connected with the gear box, so as to support and fix the gear box by using the second mounting seat 5.

[0116] ​In this way, the first mounting seat 4 is arranged separately from the mainframe body 1, and the second mounting seat 5 is arranged separately from the mainframe body 1, so that the bearing seat and the gear box are respectively assembled and connected to the first mounting position 2 and the second mounting position 3 of the mainframe body 1 through the first mounting seat 4 and the second mounting seat 5. By selecting different sizes of the first mounting seat 4 and the second mounting seat 5, or adjusting the relative positions of the first mounting seat 4 and the first mounting position 2 and the relative positions of the second mounting seat 5 and the second mounting position 3 along the axial direction of the bearing seat as needed when the first mounting seat 4 and the second mounting seat 5 are connected to the mainframe body 1, the mainframe body 1 can be adapted to the installation of bearing seats and gear boxes with different installation distances, and has strong expandability. When the wind turbine is updated, the structure size of the mainframe body 1 and the mold does not need to be redesigned, the design and development cycle is shortened, the cost is reduced, and the problem of long design and development cycle and high cost caused by the need to redesign the mainframe and the mold in the prior art when the wind turbine is updated is solved.

[0117] In another aspect, the embodiment of the present application also provides a wind turbine, which comprises the wind turbine mainframe provided by any of the above embodiments. The wind turbine mainframe in the above embodiments can allow the size of the first mounting seat 4 and the second mounting seat 5 to be replaced to adapt to the installation of bearing seats and gear boxes with different spans, and has strong adaptability, can shorten the development cycle and reduce the cost when the wind turbine is updated. Therefore, the wind turbine in the embodiment has the advantages of short development cycle and low cost. The derivation process of the beneficial effects of the wind turbine in the embodiment of the present application is similar to that of the wind turbine mainframe, and therefore will not be described here.

[0118] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A wind turbine main frame, characterized in that, include: The main frame body has a first end configured to be rotatably connected to the tower, and a second end configured with a first mounting position and a second mounting position. A first mounting base is used for fixed connection with a bearing housing. The first mounting base is detachably disposed at the first mounting position of the main frame body. The position of the first mounting base at the first mounting position is adjustable along a first direction. The first direction is perpendicular to the axial direction of the bearing housing and perpendicular to the support direction of the first mounting position on the first mounting base. The position of the first mounting base at the first mounting position is also adjustable along the axial direction of the bearing housing and the support direction of the first mounting position on the first mounting base. The second mounting base is used for fixed connection with the gearbox. The second mounting base is detachably disposed at the second mounting position of the main frame body. The position of the second mounting base at the second mounting position is adjustable along the first direction. The position of the second mounting base at the second mounting position is also adjustable along the axial direction of the bearing seat. The position of the second mounting base at the second mounting position is also adjustable along the support direction of the second mounting position on the second mounting base.

2. The wind turbine main frame according to claim 1, characterized in that, One of the first mounting base and the main frame body is provided with at least two sets of first connecting holes, and the other is provided with a second connecting hole. Each set of first connecting holes is distributed at intervals along the axial direction of the bearing seat, and each set of first connecting holes is distributed along the support direction of the first mounting position on the first mounting base. The second connecting hole is configured to correspond to at least one of the first connecting holes. One of the second mounting base and the main frame body is provided with at least two sets of third connecting holes, and the other is provided with a fourth connecting hole. Each set of the third connecting holes is distributed at intervals along the axial direction of the bearing seat, and each set of the third connecting holes is distributed along the support direction of the second mounting position on the second mounting base. The fourth connecting hole is configured to correspond to at least one of the third connecting holes.

3. The wind turbine main frame according to claim 2, characterized in that, The first mounting base includes: A first support portion is disposed opposite to the first mounting position, and the first support portion is configured to be connected to the bearing housing; A first connecting portion is disposed on the side of the first support portion near the main frame body, and a first connecting hole is disposed on the first connecting portion, and the first connecting portion is connected to the first support portion; The second mounting base includes: The second support portion is disposed opposite to the second mounting position, and the second support portion is configured to be connected to the gearbox; The second connecting part is disposed on the side of the second support part near the main frame body, and the third connecting hole is disposed on the second connecting part, and the second connecting part is connected to the second support part.

4. The wind turbine main frame according to claim 1, characterized in that, The first mounting positions are arranged in pairs, with each pair of first mounting positions spaced apart. The distribution direction of each pair of first mounting positions is perpendicular to the axial direction of the bearing seat, and the first mounting seat corresponds one-to-one with the first mounting position. The second mounting positions are arranged in pairs, with each pair of second mounting positions spaced apart. The distribution direction of each pair of second mounting positions is consistent with the distribution direction of each pair of first mounting positions, and the second mounting base corresponds one-to-one with the second mounting position.

5. The wind turbine main frame according to claim 4, characterized in that, The first mounting position is provided in two pairs, and the two pairs of the first mounting positions are distributed at intervals. The distribution direction of the two pairs of the first mounting positions is parallel to the axial direction of the bearing seat.

6. The wind turbine main frame according to claim 4, characterized in that, The second end of the main frame body has a clearance space, which is configured to allow the bearing housing, the gearbox and the spindle to pass.

7. The wind turbine main frame according to claim 1, characterized in that, The main frame includes: The frame has the first mounting position and the second mounting position located at the second end of the frame. A connecting frame is disposed at the first end of the frame body. The connecting frame is detachably connected to the frame body and is configured to be connected to the yaw bearing.

8. A wind turbine generator, characterized in that, Includes the wind turbine main frame as described in any one of claims 1 to 7.

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