A wind power main bearing test machine with a shafting

Abstract

The present invention provides a wind power main bearing test machine with a shafting system, which is characterized by comprising a rear bearing support, a loading oil cylinder, a loading cover, a companion bearing, a main bearing with a shafting system, a front loading cover, a driving system, a ground rail vehicle, etc.; the fixed ring of the shafting system is fixed on the front loading cover through a tooling, and the moving ring cancels rotation through the companion bearing; the load of the main bearing with a shafting system is generated by the loading oil cylinder and transmitted through the companion bearing, and rotates through the driving system; the present invention can load and test different models and types of wind power main bearings and shafting systems together, ensure the inclination angle between the shafting system and the hub, realize multi-purpose use of one machine, and at the same time can more truly simulate the actual use state of the main bearing, and can simultaneously realize the loading of axial force, radial force and overturning moment.

Description

Technical Field

[0001] The present invention relates to a large bearing test bench, and more specifically to a wind power main bearing test machine with a shafting system. Background Art

[0002] In recent years, the wind turbine generator market has developed rapidly, driving the development of the wind power main bearing industry. During the R & D process of wind power main bearings, it is necessary to test products of different types and specifications, record parameters such as axial and radial loads, temperature rise, stress and strain, rotational speed and torque, etc., to provide a basis for theoretical calculations, reliability design, and fatigue life prediction. Currently, domestic test benches only test the main bearings themselves, without considering the influence of factors such as the shafting structure, shafting rigidity, and installation inclination on the bearing life. Since the wind power main shaft shafting has internal rotation and external rotation, direct drive and semi - direct drive, etc., with large structural differences, and the inclination between the shafting and the hub is also different, there is currently no test equipment in China that can perform loading tests on wind power main bearings with a shafting system. Summary of the Invention

[0003] The purpose of the present invention is to provide a wind power main bearing test machine with a shafting system, which can perform loading tests on the wind power main bearing and the internal and external shafting systems together, while ensuring the inclination angle between the shafting and the hub.

[0004] To achieve the above - mentioned purpose, the present invention provides the following technical solutions:

[0005] A wind power main bearing test machine with a shafting system, characterized in that it includes a concrete platform 1, a rear bearing support 2, a loading oil cylinder 3, a loading cover 4, a first inclined transition flange 5, a companion bearing 6, a transition flange 7, a main bearing with a shafting system 8, a second inclined transition flange 9, a front loading cover 10, a drive system 11, a ground rail vehicle 12, a shafting base 13, and a test machine platform 14. A square platform hole 101 is opened on the concrete platform 1, a square bearing support hole 21 is opened on the rear bearing support 2, and a square loading cover hole 41 is opened on the loading cover 4. The platform hole 101, the bearing support hole 21, and the loading cover hole 41 can leave space for the arrangement of the drive system 11. A groove 141 is provided near the loading cover 4 on the test machine platform 14 to leave space for the arrangement of the loading oil cylinder 3.

[0006] The loading oil cylinder 3 includes an axial force oil cylinder 31, a radial force oil cylinder 33, and an overturning moment oil cylinder 32. By different combinations, different axial forces, radial forces, and overturning moments are generated to meet the test requirements of different types of bearings. Hinge fixing seats 34 are provided on both sides of the loading oil cylinder 3, and the hinge fixing seats 34 are respectively fixed on the rear bearing support 2 and the loading cover 4. Both sides of the loading oil cylinder 3 are hinged to the hinge fixing seats 34 respectively.

[0007] The load generated by the loading oil cylinder 3 acts on the loading cover 4, and then is loaded onto the main bearing 8 with a shafting through the first inclined transition flange 5, the accompanying test bearing 6 and the transition flange 7. The first inclined transition flange 5 can also be replaced by the first inclined transition flange A51 or the first inclined transition flange B52. The accompanying test bearing 6 can also be replaced by the accompanying test bearing A61 and the accompanying test bearing B62. The transition flange 7 can be replaced by the transition flange A71 and the transition flange B72. The main bearing 8 with a shafting can also be replaced by the main bearing A81 with a shafting and the main bearing B82 with a shafting. The first inclined transition flange 5 and the accompanying test bearing 6, the transition flange 7 and the main bearing 8 with a shafting are used in combination. The first inclined transition flange A51, the accompanying test bearing A61, the transition flange A71 and the main bearing A81 with a shafting are used in combination; the first inclined transition flange B52, the accompanying test bearing B62, the transition flange B72 and the main bearing B82 with a shafting are used in combination.

[0008] The inner ring of the accompanying test bearing 6 rotates with the moving ring of the main bearing 8 with a shafting, and the outer ring is fixed to ensure the fixed position of the loading cover 4 during the test.

[0009] The stationary ring of the main bearing 8 with a shafting is fixed on the front loading cover 10 through the second inclined transition flange 9, or is fixed on the testing machine platform 14 through the shafting base 13. The second inclined transition flange 9 can also be replaced by the second inclined transition flange A91.

[0010] Both the first inclined transition flange 5 and the second inclined transition flange 9 have inclined angles with the same angle, causing the main bearing 8 with a shafting to generate an inclination angle. When testing different shaftings, it is necessary to redesign the inclined transition flange and change the inclined angle of the transition flange to change the inclination angle of the main bearing, so as to simulate the relative position state of the main bearing and the hub during actual use.

[0011] After the loading cover 4 is disassembled from the loading oil cylinder 3 and the accompanying test bearing 6, it can be moved back and forth through the ground rail vehicle 12 to leave an operation space during installation.

[0012] The main bearing 8 with a shafting rotates through the drive system 11. The drive system 11 includes a drive motor 111, a reduction gearbox 112, a universal coupling 113 and a transfer flange 114. The drive motor 111 is installed on the drive motor base 1111, and two motor lifting rings 1112 arranged diagonally are also provided on the drive motor 111; four screw holes 1121 are respectively provided at the four corners of the base of the reduction gearbox 112.

[0013] The ground track vehicle 12 is provided with eight ground track wheels 121. Two of the ground track wheels 121 are respectively arranged at the four corners of the ground track vehicle 12. A ground track vehicle track 122 is provided below the ground track wheels 121. The ground track vehicle track 122 is in an I shape and is fixed on the test machine platform 14. A groove is provided on the circumferential surface of the ground track wheels 121, and the width of the groove is slightly larger than the width of the upper surface of the ground track vehicle track 122. The ground track vehicle 12 is equipped with an up-and-down adjustment device 123, a left-and-right adjustment device 124 and rollers 125. When the ground track vehicle 12 moves the loading cover 4 to be assembled with the first inclined transition flange 5, there will be a misalignment phenomenon in the bolt holes. Through the above up-and-down adjustment device and left-and-right adjustment device, the attitude of the loading cover 4 can be adjusted in two directions to align the mounting holes. There are several rows of the rollers 125 between the contact surfaces of the ground track vehicle 12 and the loading cover 4, which facilitates the movement of the loading cover during adjustment.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The wind power main bearing test machine with a shafting of the present invention can load and test different models and types of wind power main bearings and shaftings together, and ensure the inclination angle between the shafting and the hub, realizing multiple functions with one machine. At the same time, it can more realistically simulate the actual use state of the main bearing, and can simultaneously realize the loading of axial force, radial force and overturning moment. Description of the Drawings

[0016] Figure 1 It is one of the overall structure schematic diagrams of the present invention;

[0017] Figure 2 It is the second overall structure schematic diagram of the present invention;

[0018] Figure 3 It is the third overall structure schematic diagram of the present invention;

[0019] Figure 4 It is the schematic diagram of the distribution of the loading cylinders of the present invention;

[0020] Figure 5 It is the schematic diagram of the drive system of the present invention;

[0021] Figure 6 It is the cross-sectional view of the main bearing with a shafting in the first embodiment of the present invention;

[0022] Figure 7 It is the cross-sectional view of the main bearing with a shafting in the second embodiment of the present invention;

[0023] Figure 8 It is the cross-sectional view of the main bearing with a shafting in the third embodiment of the present invention;

[0024] Figure 9Schematic structural diagram of the ground track vehicle of the present invention;

[0025] Figure 10 Schematic partial structural diagram of the ground track vehicle of the present invention;

[0026] Figure 11 Schematic structural diagram of the test machine platform of the present invention;

[0027] In the figure: 1 - Concrete platform; 101 - Platform hole; 2 - Rear bearing frame; 2 - Bearing frame hole; 3 - Loading oil cylinder; 31 - Axial force oil cylinder; 32 - Overturning moment oil cylinder; 33 - Radial force oil cylinder; 34 - Hinge fixing seat; 4 - Loading cover; 41 - Loading cover hole; 5 - First inclined transition flange; 51 - First inclined transition flange A; 52 - First inclined transition flange B; 6 - Companion test bearing; 61 - Companion test bearing A; 62 - Companion test bearing B; 7 - Transition flange; 71 - Transition flange A; 72 - Transition flange B; 8 - Main bearing with shafting; 81 - Main bearing with shafting A; 82 - Main bearing with shafting B; 9 - Second inclined transition flange; 91 - Second inclined transition flange A; 10 - Front loading cover; 11 - Drive system; 111 - Drive motor; 1111 - Drive motor base; 1112 - Motor lifting ring; 112 - Reducer; 1121 - Screw hole; 113 - Universal coupling; 114 - Adapter flange; 12 - Ground track vehicle; 121 - Ground track wheel; 122 - Ground track; 123 - Up and down adjustment device; 124 - Left and right adjustment device; 125 - Roller; 13 - Shafting base; 14 - Test machine platform. Detailed implementation manners

[0028] To clarify the technical problems, technical solutions, implementation processes and performance demonstrations, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The following will describe various exemplary embodiments, features and aspects of the present disclosure in detail with reference to the drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0029] The special term "exemplary" here means "serving as an example, embodiment or illustration". Any embodiment described as "exemplary" here does not have to be construed as superior or better than other embodiments.

[0030] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following detailed implementation manners. Those skilled in the art should understand that the present disclosure can also be implemented without some specific details. In some instances, methods, means, elements and circuits well known to those skilled in the art are not described in detail in order to highlight the gist of the present disclosure.

[0031] Example 1

[0032] As Figures 1 - 3 and Figure 11 shown, a wind power main bearing test machine with a shafting system, characterized in that it includes a concrete platform 1, a rear bearing support 2, a loading oil cylinder 3, a loading cover 4, a first inclined transition flange 5, a test bearing 6, a transition flange 7, a main bearing with a shafting system 8, a second inclined transition flange 9, a front loading cover 10, a drive system 11, a ground rail vehicle 12, a shafting base 13 and a test machine platform 14. A square platform hole 101 is opened on the concrete platform 1, a square bearing support hole 21 is opened on the rear bearing support 2, and a square loading cover hole 41 is opened on the loading cover 4. The platform hole 101, the bearing support hole 21 and the loading cover hole 41 can leave space for the arrangement of the drive system 11. A groove 141 is provided near the loading cover 4 on the test machine platform 14 to leave space for the arrangement of the loading oil cylinder 3.

[0033] As Figure 4 shown, as a possible implementation manner, the loading oil cylinder 3 includes an axial force oil cylinder 31, a radial force oil cylinder 33, and an overturning moment oil cylinder 32. By different combinations, different axial forces, radial forces and overturning moments are generated to meet the bearing test requirements of different models. Hinge fixing seats 34 are provided on both sides of the loading oil cylinder 3, and the hinge fixing seats 34 are respectively fixed on the rear bearing support 2 and the loading cover 4. Both sides of the loading oil cylinder 3 are hinged to the hinge fixing seats 34 respectively.

[0034] As a possible implementation manner, the load generated by the loading oil cylinder 3 acts on the loading cover 4, and then is loaded onto the main bearing with a shafting system 8 through the first inclined transition flange 5, the test bearing 6 and the transition flange 7. The first inclined transition flange 5 can also be replaced by a first inclined transition flange A51 or a first inclined transition flange B52, the test bearing 6 can also be replaced by a test bearing A61 and a test bearing B62, the transition flange 7 can be replaced by a transition flange A71 and a transition flange B72, and the main bearing with a shafting system 8 can also be replaced by a main bearing with a shafting system A81 and a main bearing with a shafting system B82. The first inclined transition flange 5, the test bearing 6, the transition flange 7 and the main bearing with a shafting system 8 are used in a matching manner. The first inclined transition flange A51, the test bearing A61, the transition flange A71 and the main bearing with a shafting system A81 are used in a matching manner; the first inclined transition flange B52, the test bearing B62, the transition flange B72 and the main bearing with a shafting system B82 are used in a matching manner.

[0035] As a possible implementation manner, the inner ring of the test bearing 6 rotates with the moving ring of the main bearing with a shafting system 8, and the outer ring is fixed to ensure that the position of the loading cover 4 is fixed during the test.

[0036] As a possible implementation manner, the fixed ring of the main bearing 8 with a shafting is fixed on the front loading cover 10 through the second inclined transition flange 9, or is fixed on the test machine platform 14 through the shafting base 13. The second inclined transition flange 9 can also be replaced by a second inclined transition flange A91. The second inclined transition flange 9 is used in combination with the main bearing 8 with a shafting, the second inclined transition flange A91 is used in combination with the main bearing A81 with a shafting, and the shafting base 13 is used in combination with the main bearing B82 with a shafting.

[0037] As a possible implementation manner, the first inclined transition flange 5 and the second inclined transition flange 9 both have inclined angles with the same angle, so that the main bearing 8 with a shafting generates an inclination angle. When performing different shafting tests, it is necessary to re-design the inclined transition flange and change the inclined angle of the transition flange, so as to change the inclination angle of the main bearing, thereby simulating the relative position state between the main bearing and the wheel hub during actual use.

[0038] As a possible implementation manner, after the loading cover 4 is disassembled from the loading oil cylinder 3 and the accompanying test bearing 6, it can be moved back and forth through the ground rail vehicle 12 to leave an operation space during installation.

[0039] As Figure 5 shown, as a possible implementation manner, the main bearing 8 with a shafting rotates through the drive system 11. The drive system 11 includes a drive motor 111, a reduction gearbox 112, a universal coupling 113, and a transfer flange 114. The drive motor 111 is installed on the drive motor base 1111, and the motor base 1111 is fixedly installed on the bearing frame hole 21. There are also two motor lifting rings 1112 arranged diagonally on the drive motor 111, which can facilitate the hoisting of the drive motor 111 and ensure stable hoisting; there are four screw holes 1121 respectively at the four corners of the base of the reduction gearbox 112, which facilitate the fixing of the reduction gearbox 112 on the loading cover hole 41 through screw connection.

[0040] As Figure 9 and Figure 10As shown, as a possible implementation, there are eight ground rail wheels 121 provided on the ground rail vehicle 12. Two of the ground rail wheels 121 are respectively arranged at the four corners of the ground rail vehicle 12. A ground rail vehicle track 122 is provided below the ground rail wheels 121. The ground rail vehicle track 122 is in an I-shaped configuration and is fixed on the test machine platform 14. Grooves are provided on the circumferential surface of the ground rail wheels 121, and the width of the grooves is slightly larger than the width of the upper surface of the ground rail vehicle track 122, facilitating the smooth rolling of the ground rail wheels 121 on the ground rail vehicle track 122 to drive the loading cover 4 to move. An up-and-down adjustment device 123, a left-and-right adjustment device 124, and rollers 125 are installed on the ground rail vehicle 12. When the ground rail vehicle 12 moves the loading cover 4 for assembly with the first inclined transition flange 5, there will be a misalignment of the bolt holes. Through the above up-and-down adjustment device and left-and-right adjustment device, the attitude of the loading cover 4 can be adjusted in two directions to align the mounting holes. There are several rows of rollers 125 between the contact surfaces of the ground rail vehicle 12 and the loading cover 4, facilitating the movement of the loading cover during adjustment.

[0041] As Figure 1 and Figure 6 As shown, during use, the loading oil cylinder 3 includes an axial force oil cylinder 31, a radial force oil cylinder 33, and a tipping moment oil cylinder 32. By different combinations, different axial forces, radial forces, and tipping moments are generated to meet the bearing test requirements of different models. The load generated by the loading oil cylinder 3 acts on the loading cover 4, and then is loaded onto the main bearing 8 with a shafting through the first inclined transition flange 5, the accompanying test bearing 6, and the transition flange 7.

[0042] The inner ring of the accompanying test bearing 6 rotates with the outer ring of the main bearing 8 with a shafting, and the outer ring of the accompanying test bearing 6 is fixed to ensure the fixed position of the loading cover 4 during the test. The inner ring of the main bearing 8 with a shafting is fixed to the front loading cover 10 through the second inclined transition flange 9.

[0043] Both the first inclined transition flange 5 and the second inclined transition flange 9 have the same angle of bevel, causing the main bearing 8 with a shafting to have an inclination angle. When conducting tests on different shaft systems, it is necessary to re-design the inclined transition flange and change the bevel angle of the transition flange to change the inclination angle of the main bearing, thereby simulating the relative position state between the main bearing and the hub during actual use.

[0044] After the loading cover 4 is disassembled from the loading oil cylinder 3 and the accompanying test bearing 6, it can be moved back and forth by the ground rail vehicle 12 to leave an operating space during installation.

[0045] The drive motor 111 is connected to the main bearing 8 with a shafting through a reduction gearbox 112, a universal coupling 113, and a transfer flange 114 to drive the shafting to rotate.

[0046] Embodiment 2

[0047] As Figure 2 and Figure 7 shown, when in use, a wind power main bearing test machine with a shafting mainly consists of a concrete platform 1, a rear bearing support 2, a loading oil cylinder 3, a loading cover 4, a first inclined transition flange A51, a companion test bearing A61, a transition flange A71, a main bearing A81 with a shafting, a second inclined transition flange A91, a front loading cover 10, a drive system 11, and a rail vehicle 12.

[0048] The loading oil cylinder 3 includes an axial force oil cylinder 31, a radial force oil cylinder 33, and an overturning moment oil cylinder 32. By different combinations, different axial forces, radial forces, and overturning moments are generated to meet the bearing test requirements of different models. The load generated by the loading oil cylinder 3 acts on the loading cover 4, and then is loaded onto the main bearing A81 with a shafting through the first inclined transition flange A51, the companion test bearing A61, and the transition flange A71.

[0049] The inner ring of the companion test bearing A61 rotates with the outer ring of the main bearing A81 with a shafting, and the outer ring of the companion test bearing A61 is fixed to ensure the fixed position of the loading cover 4 during the test. The inner ring of the main bearing A81 with a shafting is fixed to the front loading cover 10 through the second inclined transition flange A91.

[0050] Both the first inclined transition flange A51 and the second inclined transition flange A91 have the same angle of inclination, causing the main bearing A81 with a shafting to generate an inclination angle. When testing different shaftings, the inclined transition flange needs to be redesigned, and by changing the inclination angle of the transition flange, the inclination angle of the main bearing can be changed, thereby simulating the relative position state between the main bearing and the hub during actual use.

[0051] After the loading cover 4 is disassembled from the loading oil cylinder 3 and the companion test bearing A61, it can be moved back and forth through the rail vehicle 12 to leave an operating space during installation.

[0052] The drive motor 111 is connected to the main bearing A81 with a shafting through a reduction gearbox 112, a universal coupling 113, and a transfer flange 114 to drive the shafting to rotate.

[0053] Embodiment 3

[0054] As Figure 3 and Figure 8 shown, when in use, a wind power main bearing test machine with a shafting mainly consists of a concrete platform 1, a rear bearing support 2, a loading oil cylinder 3, a loading cover 4, a first inclined transition flange B52, a companion test bearing B62, a transition flange B72, a main bearing B82 with a shafting, a front loading cover 10, a drive system 11, a rail vehicle 12, and a shafting base 13.

[0055] The loading cylinder 3 includes an axial force cylinder 31, a radial force cylinder 33, and an overturning moment cylinder 32. By different combinations, different axial forces, radial forces, and overturning moments are generated to meet the bearing test requirements of different models. The load generated by the loading cylinder 3 acts on the loading cover 4, and then is loaded onto the main bearing B82 with a shafting through the first inclined transition flange B52, the accompanying test bearing B62, and the transition flange B72.

[0056] The inner ring of the accompanying test bearing B62 rotates with the inner ring of the main bearing B82 with a shafting, and the outer ring of the accompanying test bearing is fixed to ensure the fixed position of the loading cover 4 during the test. The main bearing B82 with a shafting is fixed on the foundation through the shafting base 13.

[0057] The first inclined transition flange B5 has two inclined angles that are the same as those when the shafting is in use, causing the main bearing B82 with a shafting to have an inclination angle. When testing different shaftings, the inclined transition flange needs to be redesigned, and by changing the inclined angle of the transition flange, the inclination angle of the main bearing can be changed, thereby simulating the relative position state between the main bearing and the hub during actual use.

[0058] After the loading cover 4 is disassembled from the loading cylinder 3 and the accompanying test bearing B62, it can be moved back and forth by the ground rail vehicle 12 to leave an operation space during installation.

[0059] The driving motor 111 is connected to the main bearing B82 with a shafting through a speed reducer 112, a universal coupling 113, and a transfer flange 114 to drive the shafting to rotate.

[0060] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind power main bearing test machine with a shafting system, characterized in that It includes a concrete platform (1), a rear bearing frame (2), a loading oil cylinder (3), a loading cover (4), a first inclined transition flange (5), a test bearing (6), a transition flange (7), a main bearing with a shafting (8), a second inclined transition flange (9), a front loading cover (10), a drive system (11), a ground rail vehicle (12), a shafting base (13) and a testing machine platform (14). A square platform hole (101) is provided on the concrete platform (1), a square bearing frame hole (21) is provided on the rear bearing frame (2), and a square loading cover hole (41) is provided on the loading cover (4). The platform hole (101), the bearing frame hole (21) and the loading cover hole (41) can leave space for the arrangement of the drive system (11). A groove (141) is provided near the loading cover (4) on the testing machine platform (14) to leave space for the arrangement of the loading oil cylinder (3). The loading oil cylinder (3) includes an axial force oil cylinder (31), a radial force oil cylinder (33), and an overturning moment oil cylinder (32). By different combinations, different axial forces, radial forces and overturning moments are generated to meet the bearing test requirements of different models. Hinge fixing seats (34) are provided on both sides of the loading oil cylinder (3), and the hinge fixing seats (34) are respectively fixed on the rear bearing frame (2) and the loading cover (4). Both sides of the loading oil cylinder (3) are hinged to the hinge fixing seats (34) respectively. The load generated by the loading oil cylinder (3) acts on the loading cover (4), and then is loaded onto the main bearing with a shafting (8) through the first inclined transition flange (5), the test bearing (6) and the transition flange (7). The first inclined transition flange (5) can also be replaced by a first inclined transition flange A (51) or a first inclined transition flange B (52). The test bearing (6) can also be replaced by a test bearing A (61) and a test bearing B (62). The transition flange (7) can be replaced by a transition flange A (71) and a transition flange B (72). The main bearing with a shafting (8) can also be replaced by a main bearing with a shafting A (81) and a main bearing with a shafting B (82). The first inclined transition flange (5), the test bearing (6), the transition flange (7) and the main bearing with a shafting (8) are used in combination. The first inclined transition flange A (51), the test bearing A (61), the transition flange A (71) and the main bearing with a shafting A (81) are used in combination; the first inclined transition flange B (52), the test bearing B (62), the transition flange B (72) and the main bearing with a shafting B (82) are used in combination. The inner ring of the test bearing (6) rotates with the moving ring of the main bearing with a shafting (8), and the outer ring is fixed to ensure the fixed position of the loading cover (4) during the test. The fixed ring of the main bearing (8) with a shafting is fixed on the front loading cover (10) through the second inclined transition flange (9), or fixed on the test machine platform (14) through the shafting base (13), and the second inclined transition flange (9) can also be replaced by a second inclined transition flange A (91); The first inclined transition flange (5) and the second inclined transition flange (9) both have inclined angles with the same angle, causing the main bearing (8) with a shafting to generate an inclination angle. When conducting different shafting tests, it is necessary to redesign the inclined transition flange and change the inclined angle of the transition flange to change the inclination angle of the main bearing, thereby simulating the relative position state of the main bearing and the hub during actual use.

2. The wind power main bearing testing machine with a shafting system according to claim 1, characterized in that After the loading cover (4) is disassembled from the loading oil cylinder (3) and the accompanying test bearing (6), it can be moved back and forth through the ground rail vehicle (12) to leave an operating space during installation.

3. The aero-generator main bearing test machine with a shafting system according to claim 1, wherein The main bearing (8) with a shafting rotates through the drive system (11). The drive system (11) includes a drive motor (111), a reduction gearbox (112), a universal coupling (113), and a transfer flange (114). The drive motor (111) is installed on the drive motor base (1111), and there are also two motor lifting rings (1112) arranged diagonally on the drive motor (111); there are four screw holes (1121) respectively at the four corners of the base of the reduction gearbox (112).

4. A wind power main bearing test machine with a shafting system according to claim 1, characterized in that, There are eight ground rail wheels (121) on the ground rail vehicle (12). Two of the ground rail wheels (121) are arranged at each of the four corners of the ground rail vehicle (12). A ground rail vehicle track (122) is provided below the ground rail wheels (121). The ground rail vehicle track (122) is in an I shape and is fixed on the test machine platform (14); there are grooves on the circumferential surface of the ground rail wheels (121), and the width of the grooves is slightly larger than the width of the upper surface of the ground rail vehicle track (122); the ground rail vehicle (12) is equipped with an up and down adjustment device (123), a left and right adjustment device (124), and a roller (125).

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