Axial vibration measuring device for ring gear and measuring method

Abstract

The application provides an inner ring axial vibration measuring device and a measuring method, and belongs to the field of wind turbine generators. The measuring device comprises: an axial vibration sensor fixed on a clamping device, used for measuring the axial vibration of the inner ring; and a clamping device rigidly connected with the inner ring, used for conducting the axial vibration of the inner ring to the axial vibration sensor. The inner ring axial vibration measuring device of the application can conduct the axial vibration of the inner ring to the axial vibration sensor, and the axial vibration of the inner ring measured by the axial vibration sensor can feed back the operation state information of the gear box, thereby providing data support for fault detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind turbine generator sets, in particular to an inner ring gear axial vibration measuring device and an inner ring gear axial vibration measuring method. BACKGROUND

[0002] As an important speed increasing device of a wind turbine generator set, a gearbox is mainly responsible for transmitting power generated by a blade under the action of wind to a generator and making it reach a corresponding working speed. The wind power gearbox is installed in a narrow cabin at the top of a tower, and is subjected to the impact of irregular alternating loads all the year round, which causes vibration, affects the use precision and service life of the gearbox, and may affect the safe and reliable operation of the whole transmission chain of the wind turbine, causing major safety accidents and causing incalculable damage. Once the gearbox fails, it is very difficult to repair, and reasonable monitoring and analysis of the vibration of the gearbox play an important role in preventing accidents and improving the reliability and safety of the operation of the transmission chain of the wind turbine generator set. Therefore, the study of the vibration mechanism of the inner ring gear of the gearbox is of great significance to solve the vibration problem of the wind power gearbox.

[0003] With the rapid development of the wind power industry, megawatt high-power wind power gearboxes are gradually becoming the mainstream of the market, and the gearbox vibration problem is particularly prominent. In view of the gearbox vibration problem, at present, various gear manufacturers and whole machine manufacturers mainly measure the vibration by arranging axial and radial acceleration sensors at some positions on the gearbox body. Among them, due to the limited space, the sensors cannot be installed in the axial direction of the inner ring gear of each planetary stage, and can only be arranged in the radial direction, so the axial vibration information of the inner ring gear of each planetary stage cannot be obtained. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide an inner ring gear axial vibration measuring device and a measuring method to at least solve the problem that the axial vibration information of the inner ring gear of each planetary stage cannot be obtained.

[0005] In order to achieve the above-mentioned purpose, the first aspect of the present application provides an inner ring gear axial vibration measuring device, which comprises:

[0006] An axial vibration sensor fixed on the clamping device for measuring the axial vibration of the inner ring gear;

[0007] The clamping device is rigidly connected with the inner ring gear to conduct the axial vibration of the inner ring gear to the axial vibration sensor.

[0008] In some feasible embodiments, the clamping device comprises a clamping assembly, a first connecting assembly and a second connecting assembly;

[0009] The first end of the second connecting assembly is fixedly connected with the middle part of the first connecting assembly, and the second connecting assembly is perpendicular to the first connecting assembly; the two ends of the first connecting assembly are respectively connected with one clamping assembly, and the clamping assembly is perpendicular to the first connecting assembly; the clamping assembly and the second connecting assembly are respectively connected on the opposite two faces of the first connecting assembly.

[0010] The clamping assembly is rigidly connected with the inner ring gear; and the axial vibration sensor is fixed on the second connecting assembly.

[0011] In some possible embodiments, a sliding groove and a positioning hole are formed on the first connecting assembly, a positioning through hole is formed on the clamping assembly, and the clamping assembly is installed in the sliding groove through the bolt, the positioning hole and the positioning through hole.

[0012] In some possible embodiments, the inner ring gear axial vibration measuring device further comprises a height adjustment gasket, which is used to be installed between the clamping assembly and the inner ring gear to realize the fixation of the clamping device and the inner ring gear.

[0013] In some possible embodiments, the inner ring gear axial vibration measuring device further comprises a bolt; a first screw hole is formed on the clamping assembly, and a second screw hole is formed on the inner ring gear; the bolt rigidly fixes and connects the clamping assembly and the inner ring gear through the first screw hole and the second screw hole.

[0014] In some possible embodiments, the inner ring gear axial vibration measuring device further comprises a bracket; a window is formed on the bracket, and the second end of the second connecting assembly enters and exits the window.

[0015] In some possible embodiments, a third screw hole is formed on the second connecting assembly, the third screw hole is parallel to the direction of the first connecting assembly, and the axial vibration sensor is rotated into the second connecting assembly through the third screw hole.

[0016] The second aspect of the present application provides an inner ring gear axial vibration measuring method, which applies the inner ring gear axial vibration measuring device, and the inner ring gear axial vibration measuring method comprises the following steps.

[0017] Rigidly connecting the inner ring gear axial vibration measuring device with the inner ring gear;

[0018] Starting the gear box to obtain the inner ring gear axial vibration data under different rotating speeds;

[0019] Adjusting the connection position of the inner ring gear axial vibration measuring device and the inner ring gear, and obtaining the inner ring gear axial vibration data under different rotating speeds again.

[0020] In some possible embodiments, the rigid connection of the inner ring gear axial vibration measuring device and the inner ring gear comprises the following steps.

[0021] Determine the thickness of the height adjustment gasket and the length of the bolt according to the technical parameters of the inner ring gear;

[0022] Place the height adjustment gasket between the clamping assembly and the outer end surface of the inner ring gear, and screw the bolt from the first screw hole to fix the inner ring gear and the clamping assembly, so as to realize the rigid connection between the inner ring gear axial vibration measuring device and the inner ring gear;

[0023] Screw the axial vibration sensor into the second connecting assembly.

[0024] In some possible embodiments, the connecting positions include: an inner ring gear tooth root position and an inner ring gear two-tooth position.

[0025] By the above technical scheme, the inner ring gear axial vibration measuring device of the application can conduct the axial vibration of the inner ring gear to the axial vibration sensor, and complete the measurement of the axial vibration of the inner ring gear of the gear box of the wind turbine through the axial vibration sensor. The measured axial vibration of the inner ring gear can feedback the gear box running state information, and provide data support for fault detection.

[0026] Other features and advantages of the embodiments of the application will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings are included to provide a further understanding of the embodiments of the application, and constitute a part of the specification, and are used together with the following detailed description to explain the embodiments of the application, but do not constitute a limitation on the embodiments of the application. In the drawings:

[0028] Figure 1 is a perspective view of an inner ring gear axial vibration measuring device provided by an embodiment of the application;

[0029] Figure 2 is a connecting schematic view of a clamping assembly of an inner ring gear axial vibration measuring device provided by an embodiment of the application;

[0030] Figure 3 is a flowchart of an inner ring gear axial vibration measuring method provided by an embodiment of the application;

[0031] Figure 4 is a connecting position schematic view of an inner ring gear and an inner ring gear axial vibration measuring device provided by an embodiment of the application;

[0032] Figure 5 is a perspective view of an inner ring gear axial vibration measuring device provided by another embodiment of the application;

[0033] Figure 6 is a connecting schematic view of a first connecting assembly and a clamping assembly provided by another embodiment of the application.

[0034] Reference signs

[0035] 1-annular gear, 2-clamping device, 21-clamping assembly, 22-first connecting assembly, 221-positioning hole, 222-slotted hole, 23-second connecting assembly, 3-bolt, 4-height adjusting washer, 5-axial vibration sensor, 6-bracket. DETAILED DESCRIPTION

[0036] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0037] The annular gear axial vibration measuring device of the present application is mainly used for measuring the axial vibration of the annular gear of the planetary gear of the gear box.

[0038] Example one

[0039] Figure 1 is a perspective view of the annular gear axial vibration measuring device provided by an embodiment of the present application. As shown in Figure 1 , the annular gear axial vibration measuring device comprises:

[0040] The axial vibration sensor 5 is fixed on the clamping device 2, and is used for measuring the axial vibration of the annular gear 1. In actual application, the vibration sensor can be selected according to the accuracy requirement of the annular gear axial vibration measurement.

[0041] The clamping device 2 is rigidly connected with the annular gear 1, so as to conduct the axial vibration of the annular gear to the axial vibration sensor 5. The clamping device 2 is tightly connected with the annular gear, so that the axial vibration of the annular gear can be accurately conducted to the axial vibration sensor 5, and the consumption in the conducting process is reduced.

[0042] In some feasible embodiments, as shown in Figure 2 , the clamping device 2 comprises a clamping assembly 21, a first connecting assembly 22 and a second connecting assembly 23;

[0043] The first end of the second connecting assembly 23 is fixedly connected with the middle part of the first connecting assembly 22, and the second connecting assembly 23 is perpendicular to the first connecting assembly 22; the two ends of the first connecting assembly 22 are respectively connected with one clamping assembly 21, and the clamping assembly 21 is perpendicular to the first connecting assembly 22; the clamping assembly 21 and the second connecting assembly 23 are respectively connected on the opposite two faces of the first connecting assembly 22;

[0044] The clamping assembly 21 is rigidly connected with the inner ring gear; the axial vibration sensor 5 is fixed on the second connecting assembly 23. The first connecting assembly 22 and the second connecting assembly 23 form a T-shaped structure, the clamping assembly 21 is fixed on both ends of the first connecting assembly 22, and the clamping assembly 21 is parallel to the second connecting assembly 23. If the clamping device 2 matches the parameters of the inner ring gear, after the inner ring gear axial vibration measuring device is fixed with the inner ring gear, the clamping assembly 21 is in contact with the outer end surface of the inner ring gear.

[0045] In some possible embodiments, the inner ring gear axial vibration measuring device further comprises a height adjustment gasket 4, which is used to be installed between the clamping assembly 21 and the inner ring gear to realize the fixation of the clamping device 2 and the inner ring gear. In order to make the size of the clamping device 2 meet as many inner ring gears as possible, the height adjustment gasket 4 is used to make up the gap between the width of the inner ring gear and the clamping device 2. The height adjustment gasket 4 is made of rigid material, which can well realize the axial vibration conduction and reduce the consumption in the vibration conduction process.

[0046] In some possible embodiments, the inner ring gear axial vibration measuring device further comprises a bolt 3; the clamping assembly 21 is provided with a first screw hole, and the inner ring gear is provided with a second screw hole, and the bolt 3 rigidly connects the clamping assembly 21 and the inner ring gear through the first screw hole and the second screw hole. The clamping assembly 21 and the inner ring gear are fixed by the bolt 3, and the bolt 3 is made of rigid material, which can realize the rigid connection of the clamping device 2 and the inner ring gear.

[0047] In some possible embodiments, the inner ring gear axial vibration measuring device further comprises a bracket 6; the bracket 6 is provided with a window, and the second end of the second connecting assembly 23 enters and exits the window. In some possible embodiments, the bracket 6 can be an inverted T-shaped bracket, as shown in Figure 1 The bottom of the inverted T-shaped bracket has a larger contact area, so that the bracket is more stable.

[0048] In some possible embodiments, the second connecting assembly 23 is provided with a third screw hole, the third screw hole is parallel to the direction of the first connecting assembly 22, and the axial vibration sensor 5 is rotated into the second connecting assembly 23 through the third screw hole. The installation direction of the axial vibration sensor 5 is parallel to the axial direction, which is more convenient for measuring the axial vibration, and the axial vibration sensor 5 is fixed on the second connecting assembly 23 by screwing, which is more conducive to vibration collection.

[0049] Taking the inner ring gear of the first planetary gear of the gear box as an example, the axial vibration measuring test device thereof is as shown in Figure 1The small threaded holes are opened on the gear box planetary gear ring gear, and the clamping device 2 is rigidly connected with the ring gear through the bolt 3. The gear box planetary gear ring gear, the clamping device 2 and the height adjusting gasket 4 are assembled by adjustment during the test, and after the adjustment is completed, the gear box ring gear and the clamping device 2 are fixed through the bolt 3; the axial vibration sensor 5 is rotated into the second connecting assembly 23 through the threaded hole, and the clamping device 2 is fixed on the support 6. The structure of the test device of the gear box second and third planetary gear ring gear is similar.

[0050] The second aspect of the present application provides an inner ring axial vibration measurement method, which applies the inner ring axial vibration measurement device, adopts the mode of guiding the axial vibration of the gear box planetary gear ring gear through a rigid structure, designs the clamping device 2, installs the axial vibration sensor 5 on the rigid clamping device 2, realizes the measurement of the axial vibration of the inner ring, and solves the problem that the axial vibration information of the planetary gear ring gear cannot be obtained due to the limitation of the space position.

[0051] As Figure 3 shown, the inner ring axial vibration measurement method comprises:

[0052] S1: rigidly connecting the inner ring axial vibration measurement device with the inner ring;

[0053] In some feasible embodiments, the rigid connection of the inner ring axial vibration measurement device with the inner ring comprises:

[0054] According to the technical parameters of the inner ring, the thickness of the height adjusting gasket 4 and the length of the bolt are determined. In some feasible embodiments, first, the technical parameters of the gear box planetary gear ring gear required for the test are confirmed, including the width, wall thickness, material, gap between the inner ring surface and the gear pair, etc. of the inner ring, then according to the distance between the clamping assemblies 21 at both ends of the first connecting assembly 22 in the clamping device 2, the distance between the inner surface of the clamping assembly 21 and the outer end surface of the inner ring is confirmed, and according to this distance, the thickness of the height adjusting gasket 4 and the length of the bolt and other parameters are determined.

[0055] The height adjusting gasket 4 is placed between the clamping assembly 21 and the outer end surface of the inner ring, and the bolt 3 is screwed into the first threaded hole to fix the inner ring and the clamping assembly 21, so as to rigidly connect the inner ring axial vibration measurement device with the inner ring.

[0056] The axial vibration sensor 5 is screwed into the second connecting assembly 23, and the second connecting assembly 23 of the clamping device 2 is inserted into the window on the support 6. The window adopts a smooth contact surface to reduce friction and the influence on the measurement results.

[0057] S2: Start the gearbox, and obtain the inner ring axial vibration data at different rotating speeds. In the embodiment of the present application, the inner ring axial vibration data at one rotating speed is taken as a group of data, and several groups of inner ring axial vibration data are obtained by switching several rotating speeds.

[0058] Before actually measuring, the connection of each component needs to be carefully detected. For example, whether the connection between the clamping device 2 and the inner ring is loose, whether the bolt 3 and the height adjustment pad 4 are loose and damaged, and the like.

[0059] During the measurement process, it is necessary to check the data output of the axial vibration sensor 5 and observe whether the output axial vibration meets the expectation.

[0060] The measured inner ring axial vibration data can be used to analyze the vibration and failure of the inner ring, provide more information and analysis means for the existing wind power industry gearbox and transmission chain field problems, and can be targeted to adopt effective measures to reduce the vibration and noise level of the wind power gearbox, so as to make it safe and reliable in operation, which is helpful to further improve and improve the design and manufacture of the wind power gearbox.

[0061] S3: Adjust the connection position of the inner ring axial vibration measuring device and the inner ring, and obtain the inner ring axial vibration data at different rotating speeds again. Similarly, after adjusting the connection position of the inner ring axial vibration measuring device and the inner ring, start the gearbox, and obtain the inner ring axial vibration data at different rotating speeds.

[0062] In some feasible embodiments, as shown in Figure 4 , the connection position includes: the inner ring tooth root position, such as position A in Figure 4 , and the inner ring tooth-tooth position, such as position B in Figure 4 . In this way, it can be verified whether the punching position (connection position) has an impact on the vibration result. During the measurement process, after completing the axial vibration measurement of the primary inner ring, the axial vibration measurement of the secondary and tertiary inner rings is performed.

[0063] Embodiment Two

[0064] Figure 5 is a perspective view of the inner ring axial vibration measuring device provided by another embodiment of the present application. As shown in Figure 5 , the inner ring axial vibration measuring device comprises:

[0065] The axial vibration sensor 5 is fixed on the clamping device 2 and is used to measure the axial vibration of the inner ring 1. In actual application, the vibration sensor can be selected from mature vibration sensors on the market according to the accuracy requirement of the inner ring axial vibration measurement.

[0066] The clamping device 2 is rigidly connected with the inner ring 1 to conduct the axial vibration of the inner ring to the axial vibration sensor 5. The clamping device 2 is closely connected with the inner ring so as to accurately conduct the axial vibration of the inner ring to the axial vibration sensor 5 and reduce the loss in the process of conduction.

[0067] In the embodiment, as shown in the figure, Figure 5 the clamping device 2 comprises a clamping assembly 21, a first connecting assembly 22 and a second connecting assembly 23.

[0068] The first end of the second connecting assembly 23 is fixedly connected with the middle part of the first connecting assembly 22, and the second connecting assembly 23 is perpendicular to the first connecting assembly 22. The two ends of the first connecting assembly 22 are respectively connected with a clamping assembly 21, and the clamping assembly 21 is perpendicular to the first connecting assembly 22. The clamping assembly 21 and the second connecting assembly 23 are respectively connected on the opposite two faces of the first connecting assembly 22.

[0069] The clamping assembly 21 is rigidly connected with the inner ring. The axial vibration sensor 5 is fixed on the second connecting assembly 23. The first connecting assembly 22 and the second connecting assembly 23 form a T-shaped structure. The clamping assembly 21 is fixed at the two ends of the first connecting assembly 22, and the clamping assembly 21 is parallel to the second connecting assembly 23. If the parameters of the clamping device 2 and the inner ring match, after the inner ring axial vibration measuring device is fixed with the inner ring, the clamping assembly 21 contacts the outer end face of the inner ring.

[0070] In the embodiment, as shown in the figure, Figure 6 the first connecting assembly 22 is provided with a sliding groove 222 and a plurality of positioning holes 221. The clamping assembly 21 is provided with a positioning through hole. The clamping assembly is installed in the sliding groove 222 through bolts, the positioning holes 221 and the positioning through hole. When the clamping assembly 21 is fixedly connected with the first connecting assembly 22, the clamping assembly 21 is first inserted into the sliding groove 222 from the two ends of the first connecting assembly 22. The clamping assembly 21 in the sliding groove 222 is slid to align the positioning through hole on the clamping assembly 21 with the positioning hole 221 on the first connecting assembly 22. Then, the clamping assembly 21 is rigidly connected and fixed with the first connecting assembly 22 by using bolts.

[0071] In some feasible embodiments, the clamping assembly 21 can also be provided with a groove matching the first connecting assembly. When the clamping assembly 21 is fixedly connected with the first connecting assembly 22, the groove on the clamping assembly 21 is first aligned with the first connecting assembly 22 so that the clamping assembly 21 can be inserted into the sliding groove 222. After the clamping assembly 21 is inserted into the sliding groove 222, the groove wall of the clamping assembly 21 contacts the end face of the first connecting assembly 22 to prevent the clamping assembly 21 from sliding out along the second connecting assembly 23.

[0072] In some possible embodiments, the inner ring axial vibration measuring device further comprises a height adjustment gasket 4, which is used to be installed between the clamping assembly 21 and the inner ring to realize the fixation of the clamping device 2 and the inner ring. In order to make the size of the clamping device 2 meet as many inner rings as possible, the height adjustment gasket 4 is used to make up the gap between the width of the inner ring and the clamping device 2. The height adjustment gasket 4 is made of rigid material, which can well realize the axial vibration conduction and reduce the consumption of vibration in the conduction process.

[0073] In some possible embodiments, the inner ring axial vibration measuring device further comprises a bolt 3; the clamping assembly 21 is provided with a first screw hole, and the inner ring is provided with a second screw hole, and the bolt 3 rigidly and fixedly connects the clamping assembly 21 and the inner ring through the first screw hole and the second screw hole. The clamping assembly 21 and the inner ring are fixed by the bolt 3, and the bolt 3 is made of rigid material and can realize the rigid connection of the clamping device 2 and the inner ring.

[0074] In some possible embodiments, the inner ring axial vibration measuring device further comprises a bracket 6; the bracket 6 is provided with a window, and the second end of the second connecting assembly 23 enters and exits the window. In some possible embodiments, the bracket 6 can be an inverted T-shaped bracket, as shown in Figure 5 The bottom of the inverted T-shaped bracket has a larger contact area, so that the bracket is more stable.

[0075] In some possible embodiments, the second connecting assembly 23 is provided with a third screw hole, and the third screw hole is parallel to the direction of the first connecting assembly 22, and the axial vibration sensor 5 is screwed into the second connecting assembly 23 through the third screw hole. The installation direction of the axial vibration sensor 5 is parallel to the axis, which is more convenient for measuring the axial vibration, and the axial vibration sensor 5 is fixed on the second connecting assembly 23 by screwing, which is more conducive to vibration collection.

[0076] Taking the inner ring of the first planetary gear of the gearbox as an example, the axial vibration measuring test device thereof is as shown in Figure 5The small threaded holes are opened on the gear box planetary gear ring gear, and the clamping device 2 is rigidly connected with the ring gear through the bolts 3. The gear box planetary gear ring gear, the clamping device 2 and the height adjusting gasket 4 are assembled by adjustment during the test. Specifically, the installation position of the clamping assembly 21 in the clamping device 2 on the first connecting assembly 22 can be adjusted according to the width of the gear box planetary gear ring gear, and then the height adjusting gasket 4 is used for fine adjustment to realize the assembly of the gear box planetary gear ring gear, the clamping device 2 and the height adjusting gasket 4. After the adjustment is completed, the gear box ring gear and the clamping device 2 are fixed through the bolts 3; the axial vibration sensor 5 is rotated into the second connecting assembly 23 through the threaded hole, and the clamping device 2 is fixed on the bracket 6. The structure of the test device of the gear box second and third planetary gear ring gears is similar.

[0077] The second aspect of the present application provides an inner ring axial vibration measurement method, which applies the inner ring axial vibration measurement device. The method adopts the mode that the axial vibration of the gear box planetary gear ring gear is derived through a rigid structure, designs the clamping device 2, installs the axial vibration sensor 5 on the rigid clamping device 2, realizes the measurement of the axial vibration of the inner ring, and solves the problem that the axial vibration information of the planetary gear ring gear cannot be obtained due to the limitation of the space position.

[0078] The inner ring axial vibration measurement method comprises the following steps.

[0079] S1: rigidly connecting the inner ring axial vibration measurement device with the inner ring;

[0080] In some feasible embodiments, the rigid connection of the inner ring axial vibration measurement device with the inner ring comprises the following steps.

[0081] The thickness of the height adjusting gasket 4 and the length of the bolt are determined according to the technical parameters of the inner ring. In some feasible embodiments, first, the technical parameters of the gear box planetary gear ring gear required for the test are confirmed, including the width, wall thickness, material, gap between the inner ring surface and the gear pair, etc. of the inner ring, and then according to the different positioning holes of the clamping assembly 21 fixed on the first connecting assembly 22, the position of the positioning hole of the clamping assembly 21 fixed on the first connecting assembly 22 is determined, and the interval between the clamping assemblies 21 at both ends of the first connecting assembly 22 is greater than the width of the inner ring, and the difference between the interval and the width of the inner ring is minimized. Then, the thickness of the height adjusting gasket 4 and the length of the bolt and other parameters are determined according to the difference between the interval of the fixed clamping assembly 21 and the width of the inner ring.

[0082] The height adjusting gasket 4 is placed between the clamping assembly 21 and the outer end surface of the inner ring. The bolt 3 is screwed into the first threaded hole to fix the inner ring and the clamping assembly 21, so as to realize the rigid connection of the inner ring axial vibration measurement device with the inner ring.

[0083] The axial vibration sensor 5 is screwed into the second connecting assembly 23, and the second connecting assembly 23 of the clamping device 2 is inserted into a window on the support 6, which has a smooth contact surface to reduce friction and the influence on the measurement results.

[0084] S2: Start the gearbox to obtain the axial vibration data of the inner ring gear at different rotating speeds. In the embodiment of the application, the axial vibration data of the inner ring gear at one rotating speed is taken as a group of data, and several groups of axial vibration data of the inner ring gear are obtained by switching several groups of rotating speeds.

[0085] Before actual measurement, it is necessary to carefully detect the connection of each component. For example, whether the connection between the clamping device 2 and the inner ring gear 1 is loose, whether the bolt 3 and the height adjustment washer 4 are loose and damaged, etc.

[0086] During the measurement process, it is necessary to check the data output of the axial vibration sensor 5 and observe whether the output axial vibration meets the expectation.

[0087] The measured axial vibration data of the inner ring gear can be used to analyze the vibration and fault of the inner ring gear, provide more information and analysis means for the research and development of existing wind power industry gearboxes and the solution of transmission chain field problems, and targeted effective measures can be taken to reduce the vibration and noise level of the wind power gearbox, so as to make it safe and reliable in operation, which is helpful to further improve and improve the design and manufacturing of the wind power gearbox.

[0088] S3: Adjust the connection position of the inner ring gear axial vibration measurement device and the inner ring gear, and obtain the axial vibration data of the inner ring gear at different rotating speeds again. Similarly, after adjusting the connection position of the inner ring gear axial vibration measurement device and the inner ring gear, start the gearbox to obtain the axial vibration data of the inner ring gear at different rotating speeds.

[0089] In some feasible embodiments, the connection position includes: the inner ring gear tooth root position and the inner ring gear two-tooth position. In this way, it can be verified whether the punching position (connection position) has an influence on the vibration results. During the measurement process, after completing the axial vibration measurement of the first-stage inner ring gear, the axial vibration measurement of the second-stage and third-stage inner ring gears is performed.

[0090] Through the above technical solution, the inner ring gear axial vibration measurement device of the application can conduct the axial vibration of the inner ring gear to the axial vibration sensor 5, complete the measurement of the axial vibration of the inner ring gear of the gearbox of the wind turbine generator set through the axial vibration sensor 5, and the measured axial vibration of the inner ring gear can feedback the gearbox operation state information to provide data support for fault detection, etc.

[0091] Those skilled in the art can understand that all or part of the steps of the method for implementing the above-mentioned embodiments can be completed by programs instructing relevant hardware, the programs are stored in a storage medium, and the programs include a plurality of instructions for enabling a single-chip microcomputer, a chip or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various storage media capable of storing program codes.

[0092] The optional embodiments of the present application are described in detail above in combination with the drawings, but the embodiments of the present application are not limited to the specific details in the above-described embodiments. Within the technical concept range of the embodiments of the present application, various simple modifications can be made to the technical solutions of the embodiments of the present application, and these simple modifications all belong to the protection scope of the embodiments of the present application. In addition, it should be noted that each specific technical feature described in the above-described specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present application will not be described again for various possible combinations.

[0093] In addition, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the idea of the embodiments of the present application, and it should also be considered as disclosed by the embodiments of the present application.

Claims

1. An internal gear ring axial vibration measuring device, characterized in that: The internal gear ring axial vibration measuring device comprises: An axial vibration sensor (5) is fixed on the clamping device (2) and is used to measure the axial vibration of the inner gear ring (1); A clamping device (2) is rigidly connected to the inner gear ring (1) to transmit the axial vibration of the inner gear ring (1) to the axial vibration sensor (5); The clamping device (2) comprises a clamping component (21), a first connecting component (22) and a second connecting component (23); The first end of the second connecting component (23) is fixedly connected to the middle of the first connecting component (22), and the second connecting component (23) is perpendicular to the first connecting component (22); the two ends of the first connecting component (22) are respectively connected to a clamping component (21), and the clamping component (21) is perpendicular to the first connecting component (22); the clamping component (21) and the second connecting component (23) are respectively connected to two opposite surfaces of the first connecting component (22); The clamping assembly (21) is rigidly connected to the inner gear ring (1); the axial vibration sensor (5) is fixed on the second connecting assembly (23); The first connecting component (22) is provided with a slide groove (222) and a plurality of positioning holes (221), the clamping component (21) is provided with a positioning through hole, and the clamping component (21) is installed in the slide groove (222) via a bolt (3), the positioning hole (221) and the positioning through hole; A third screw hole is provided on the second connecting component (23), and the third screw hole is parallel to the direction of the first connecting component (22). The axial vibration sensor (5) is rotated into the second connecting component (23) through the third screw hole.

2. The internal gear ring axial vibration measuring device according to claim 1, characterized in that: The inner gear ring axial vibration measuring device further comprises a height adjustment gasket (4), which is used to be installed between the clamping assembly (21) and the inner gear ring (1) to achieve fixation of the clamping device (2) and the inner gear ring (1).

3. The internal gear ring axial vibration measuring device according to claim 1, characterized in that: The inner gear ring axial vibration measuring device further comprises a bolt (3); a first screw hole is provided on the clamping assembly (21), a second screw hole is provided on the inner gear ring (1), and the bolt (3) rigidly fixes the clamping assembly (21) to the inner gear ring (1) through the first screw hole and the second screw hole.

4. The internal gear ring axial vibration measuring device according to claim 1, characterized in that: The inner gear ring axial vibration measuring device further comprises a bracket (6); a window is provided on the bracket (6), and the second end of the second connecting assembly (23) enters and exits the window.

5. A method for measuring the axial vibration of an internal gear ring, characterized in that: The internal gear ring axial vibration measuring device according to any one of claims 1 to 4 is applied, and the internal gear ring axial vibration measuring method comprises: The inner gear ring axial vibration measuring device is rigidly connected to the inner gear ring (1); Start the gearbox and obtain the axial vibration data of the inner gear ring at different speeds; The connection position between the inner gear ring axial vibration measuring device and the inner gear ring (1) is adjusted to obtain the inner gear ring axial vibration data at different speeds again.

6. The method for measuring the axial vibration of the inner gear ring according to claim 5, characterized in that: The inner gear ring axial vibration measuring device is rigidly connected to the inner gear ring (1), comprising: Determine the thickness of the height adjustment gasket (4) and the length of the bolt (3) according to the technical parameters of the inner gear ring (1); Place the height adjustment gasket (4) between the clamping assembly (21) and the outer end surface of the inner gear ring (1), screw the bolt (3) into the first screw hole to fix the inner gear ring (1) and the clamping assembly (21), and realize the rigid connection between the inner gear ring axial vibration measuring device and the inner gear ring (1); The axial vibration sensor (5) is screwed into the second connecting assembly (23).

7. The method for measuring the axial vibration of the inner gear ring according to claim 5, characterized in that: The connection positions include: the root position of the inner gear ring and the position between two teeth of the inner gear ring.

Images