Inner gear ring axial vibration measuring device and measuring method

Abstract

The invention provides a device and a method for measuring axial vibration of an inner gear ring, and belongs to the field of wind generating sets. The measuring device comprises an axial vibration sensor which is fixed on the clamping device and is used for measuring the axial vibration of the inner gear ring; and the clamping device is rigidly connected with the inner gear ring so as to transmit the axial vibration of the inner gear ring to the axial vibration sensor. By adopting the device for measuring the axial vibration of the inner gear ring, the axial vibration of the inner gear ring can be conducted to the axial vibration sensor, the measurement of the axial vibration of the inner gear ring of a wind turbine generator gearbox is completed through the axial vibration sensor, and the measured axial vibration of the inner gear ring can feed back the running state information of the gearbox. And data support is provided for fault detection and the like.

Description

Technical Field

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

[0002] As an important speed-increasing device of wind turbines, the gearbox is mainly responsible for transmitting the power generated by the impeller under the action of wind to the generator and making it reach the corresponding working speed. The wind turbine gearbox is installed in a small cabin at the top of the tower. It is subjected to the impact of irregular alternating loads all year round, which causes vibration. This not only affects the accuracy and service life of the gearbox, but also may affect the safe and reliable operation of the entire transmission chain of the wind turbine, causing major safety accidents and immeasurable damage. Once a gearbox fails, it is very difficult to repair. Reasonable monitoring and analysis of gearbox vibration plays an important role in preventing accidents and improving the reliability and safety of the wind turbine transmission chain. Therefore, studying the vibration mechanism of the gear ring in the gearbox is of great significance to solving the vibration problem of wind turbine gearboxes.

[0003] With the rapid development of the wind power industry, megawatt-class high-power wind power gearboxes are gradually becoming the mainstream of the market, and the gearbox vibration problem is particularly prominent. In response to the gearbox vibration problem, various gear manufacturers and complete machine manufacturers currently mainly measure the vibration by arranging axial and radial acceleration sensors at some positions on the gearbox body. Among them, due to limited space, the sensors cannot be installed axially on the inner gear rings of each planetary level of the gearbox, and only measurement points can be arranged radially. Therefore, the axial vibration information of the inner gear rings of each planetary level cannot be obtained. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide an internal gear ring axial vibration measurement device and a measurement method, so as to at least solve the above-mentioned problem of being unable to obtain the axial vibration information of each planetary stage internal gear ring.

[0005] In order to achieve the above-mentioned object, the first aspect of the present invention provides an internal gear ring axial vibration measuring device, the internal gear ring axial vibration measuring device comprising: An axial vibration sensor, fixed on the clamping device, is used to measure the axial vibration of the inner gear ring; The clamping device is rigidly connected to the inner gear ring to transmit the axial vibration of the inner gear ring to the axial vibration sensor.

[0006] In some feasible embodiments, the clamping device includes a clamping assembly, a first connecting assembly, and a second connecting assembly; The first end of the second connecting component is fixedly connected to the middle of the first connecting component, and the second connecting component is perpendicular to the first connecting component; the two ends of the first connecting component are respectively connected to a clamping component, and the clamping component is perpendicular to the first connecting component; the clamping component and the second connecting component are respectively connected to two opposite surfaces of the first connecting component; The clamping assembly is rigidly connected to the inner gear ring; and the axial vibration sensor is fixed on the second connecting assembly.

[0007] In some feasible embodiments, a slide groove and a positioning hole are provided on the first connecting component, a positioning through hole is provided on the clamping component, and the clamping component is installed in the slide groove by means of bolts, the positioning hole and the positioning through hole.

[0008] In some feasible embodiments, the inner gear ring axial vibration measuring device further includes a height adjustment gasket, and the height adjustment gasket is used to be installed between the clamping assembly and the inner gear ring to achieve fixation of the clamping device and the inner gear ring.

[0009] In some feasible embodiments, the inner gear ring axial vibration measuring device also includes a bolt; a first screw hole is opened on the clamping assembly, and a second screw hole is opened on the inner gear ring, and the bolt rigidly fixes the clamping assembly and the inner gear ring through the first screw hole and the second screw hole.

[0010] In some feasible embodiments, the inner gear ring axial vibration measuring device further includes a bracket; a window is provided on the bracket, and the second end of the second connecting assembly enters and exits the window.

[0011] In some feasible embodiments, a third screw hole is provided on the second connecting component, the third screw hole is parallel to the direction of the first connecting component, and the axial vibration sensor is rotated into the second connecting component through the third screw hole.

[0012] A second aspect of the present application provides a method for measuring the axial vibration of an inner gear ring, using the inner gear ring axial vibration measuring device, the method for measuring the axial vibration of an inner gear ring comprising: The inner gear ring axial vibration measuring device is rigidly connected to the inner gear ring; 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 is adjusted, and the axial vibration data of the inner gear ring at different rotation speeds is obtained again.

[0013] In some feasible embodiments, the inner gear ring axial vibration measuring device is rigidly connected to the inner gear ring, including: Determine the thickness of the height adjustment gasket and the length of the bolt according to the technical parameters of the inner gear ring; Place the height adjustment gasket between the clamping assembly and the outer end surface of the inner gear ring, and screw in the bolts from the first screw hole to fix the inner gear ring and the clamping assembly, so as to achieve a rigid connection between the inner gear ring axial vibration measuring device and the inner gear ring; Screw the axial vibration sensor into the second connecting assembly.

[0014] In some feasible embodiments, the connection position includes: a tooth root position of the inner ring gear and a position between two teeth of the inner ring gear.

[0015] Through the above technical scheme, the inner gear ring axial vibration measuring device of the present application can transmit the axial vibration of the inner gear ring to the axial vibration sensor, and the axial vibration of the inner gear ring of the wind turbine gearbox is measured by the axial vibration sensor. The measured axial vibration of the inner gear ring can feedback the gearbox operating status information and provide data support for fault detection, etc.

[0016] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings: Figure 1 It is a three-dimensional schematic diagram of an internal gear ring axial vibration measuring device provided by one embodiment of the present invention; Figure 2 It is a schematic diagram of the connection of the clamping assembly of the internal gear ring axial vibration measuring device provided by one embodiment of the present invention; Figure 3 is a flow chart of a method for measuring axial vibration of an inner gear ring provided by one embodiment of the present invention; Figure 4 It is a schematic diagram of the connection position of the inner gear ring and the inner gear ring axial vibration measuring device provided by one embodiment of the present invention; Figure 5 A three-dimensional schematic diagram of an internal gear ring axial vibration measuring device provided by another embodiment of the present invention; Figure 6 A schematic diagram of the connection between a first connecting component and a clamping component is provided in another embodiment of the present invention.

[0018] Description of Reference Numerals 1-inner gear ring, 2-clamping device, 21-clamping assembly, 22-first connecting assembly, 221-positioning hole, 222-slide groove, 23-second connecting assembly, 3-bolt, 4-height adjustment gasket, 5-axial vibration sensor, 6-bracket. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0020] The internal gear ring axial vibration measuring device of the present application is mainly used to measure the axial vibration of the internal gear ring of the planetary stage of the gear box.

[0021] Embodiment 1 Figure 1 FIG. 1 is a three-dimensional schematic diagram of an internal gear ring axial vibration measuring device provided by an embodiment of the present invention. Figure 1 As shown, the inner gear ring axial vibration measuring device comprises: The 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. In practical applications, the vibration sensor can be selected from mature vibration sensors on the market according to the accuracy requirements of the axial vibration measurement of the inner gear ring.

[0022] The clamping device 2 is rigidly connected to the inner gear ring 1 to transmit the axial vibration of the inner gear ring to the axial vibration sensor 5. The clamping device 2 is tightly connected to the inner gear ring so that the axial vibration of the inner gear ring can be accurately transmitted to the axial vibration sensor 5, reducing consumption during the transmission process.

[0023] In some possible embodiments, Figure 2 As shown, the clamping device 2 includes 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; 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, and the clamping assembly 21 is fixed at both 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 gear ring match, then after the inner gear ring axial vibration measuring device is fixed to the inner gear ring, the clamping assembly 21 contacts the outer end surface of the inner gear ring.

[0024] In some feasible embodiments, the inner gear ring axial vibration measuring device further includes a height adjustment gasket 4, which is used to be installed between the clamping assembly 21 and the inner gear ring to achieve the fixation of the clamping device 2 and the inner gear ring. In order to make the size of the clamping device 2 meet the requirements of various inner gear rings as much as possible, the height adjustment gasket 4 is used to make up the gap between the width of the inner gear ring and the clamping device 2. The height adjustment gasket 4 is made of rigid material, which can well achieve axial vibration transmission and reduce consumption during vibration transmission.

[0025] In some feasible embodiments, the inner gear ring axial vibration measuring device further includes a bolt 3; a first screw hole is provided on the clamping assembly 21, and a second screw hole is provided on the inner gear ring, and the bolt 3 rigidly fixes the clamping assembly 21 to the inner gear ring through the first screw hole and the second screw hole. The clamping assembly 21 and the inner gear ring are fixed by the bolt 3, which is supported by a rigid material, and can realize a rigid connection between the clamping device 2 and the inner gear ring.

[0026] In some feasible embodiments, 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. In some feasible embodiments, the bracket 6 may be an inverted T-shaped bracket, such as Figure 1 As shown, the bottom of the inverted T-shaped bracket has a larger contact area, making the bracket more stable.

[0027] In some feasible embodiments, a third screw hole is provided on the second connecting component 23, and the third screw hole is parallel to the first connecting component 22, and the axial vibration sensor 5 is rotated into the second connecting component 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 axial vibration, and the axial vibration sensor 5 is fixed to the second connecting component 23 by screwing, which is more conducive to vibration collection.

[0028] Taking the first-stage planetary gear ring of the gearbox as an example, the axial vibration measurement test device is as follows: Figure 1 As shown. A small threaded hole is opened on the planetary internal gear ring of the gearbox, and the clamping device 2 is rigidly connected to the internal gear ring through bolts 3. During the test, the planetary internal gear ring of the gearbox, the clamping device 2 and the height adjustment gasket 4 are assembled by adjustment. After the adjustment is completed, the two are fixed to the gearbox internal gear ring and the clamping device 2 through bolts 3; the axial vibration sensor 5 is rotated into the second connecting component 23 through the threaded hole, and the clamping device 2 is fixed on the bracket 6. The structure of the gearbox second-stage and third-stage planetary internal gear ring test device is similar.

[0029] A second aspect of the present application provides a method for measuring the axial vibration of an inner gear ring, using the inner gear ring axial vibration measuring device described above. The method adopts a method of deriving the axial vibration of the planetary-level inner gear ring of the gear box through a rigid structure, designs a clamping device 2, and installs the axial vibration sensor 5 on the rigid clamping device 2 to measure the axial vibration of the inner gear ring, thereby solving the problem of being unable to obtain the axial vibration information of the planetary-level inner gear ring due to spatial position limitations.

[0030] like Figure 3 As shown, the inner gear ring axial vibration measurement method includes: S1: rigidly connecting the inner gear ring axial vibration measuring device to the inner gear ring; In some feasible embodiments, the inner gear ring axial vibration measuring device is rigidly connected to the inner gear ring, including: The thickness of the height adjustment gasket 4 and the length of the bolt are determined according to the technical parameters of the inner gear ring. In some feasible embodiments, the technical parameters of the planetary inner gear ring of the gearbox to be tested are first confirmed, including the width, wall thickness, material, and clearance between the inner gear ring surface and the gear pair, and then the distance between the inner surface of the clamping assembly 21 and the outer end surface of the inner gear ring is confirmed according to the spacing between the clamping assemblies 21 at both ends of the first connecting assembly 22 in the clamping device 2, and the thickness of the height adjustment gasket 4 and the length of the bolt are determined according to this distance.

[0031] Place the height adjustment gasket 4 between the clamping assembly 21 and the outer end surface of the inner gear ring, and screw the bolt 3 into the first screw hole to fix the inner gear ring to the clamping assembly 21, so as to achieve a rigid connection between the inner gear ring axial vibration measuring device and the inner gear ring.

[0032] The axial vibration sensor 5 is screwed into the second connecting component 23. The second connecting component 23 of the clamping device 2 is inserted into the window on the bracket 6. The window adopts a smooth contact surface to reduce friction and reduce the impact on the measurement result.

[0033] S2: Start the gearbox to obtain the axial vibration data of the inner gear ring at different speeds. In the embodiment of the present application, the axial vibration data of the inner gear ring at one speed is taken as a group of data, and several groups of axial vibration data of the inner gear ring are obtained by switching several groups of speeds.

[0034] Before actually measuring, it is necessary to carefully check the connection of each component, for example, whether the connection between the clamping device 2 and the inner gear ring is loose, whether the bolt 3 and the height adjustment gasket 4 are loose or damaged, etc.

[0035] During the measurement process, it is necessary to check the data output of the axial vibration sensor 5 to see whether the output axial vibration meets expectations.

[0036] The measured axial vibration data of the inner gear ring can be used to analyze the vibration and faults of the inner gear ring, provide more information and analysis methods for existing on-site problems of gearboxes and transmission chains in the wind power industry, and adopt effective measures to reduce the vibration and noise levels of wind power gearboxes in a targeted manner, so that they can operate safely and reliably, which will help to further improve the design and manufacture of wind power gearboxes.

[0037] S3: Adjust the connection position between the inner gear ring axial vibration measuring device and the inner gear ring, and obtain the inner gear ring axial vibration data at different speeds again. Similarly, after adjusting the connection position between the inner gear ring axial vibration measuring device and the inner gear ring, start the gear box and obtain the inner gear ring axial vibration data at different speeds.

[0038] In some possible embodiments, Figure 4 As shown, the connection position includes: the root position of the inner ring gear, such as Figure 4 The A position in the figure, and the position between the two teeth of the inner ring gear, such as Figure 4 In this way, it can be verified whether the punching position (connection position) has an impact on the vibration results. During the measurement process, after completing the axial vibration measurement of the first-stage internal gear ring, the axial vibration measurement of the second-stage and third-stage internal gear rings is carried out.

[0039] Embodiment 2 Figure 5 FIG. 1 is a three-dimensional schematic diagram of an internal gear ring axial vibration measuring device provided by another embodiment of the present invention. Figure 5 As shown, the inner gear ring axial vibration measuring device comprises: The 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. In practical applications, the vibration sensor can be selected from mature vibration sensors on the market according to the accuracy requirements of the axial vibration measurement of the inner gear ring.

[0040] The clamping device 2 is rigidly connected to the inner gear ring 1 to transmit the axial vibration of the inner gear ring to the axial vibration sensor 5. The clamping device 2 is tightly connected to the inner gear ring so that the axial vibration of the inner gear ring can be accurately transmitted to the axial vibration sensor 5, reducing consumption during the transmission process.

[0041] In this embodiment, if Figure 5 As shown, the clamping device 2 includes 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; 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, and the clamping assembly 21 is fixed at both 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 gear ring match, then after the inner gear ring axial vibration measuring device is fixed to the inner gear ring, the clamping assembly 21 contacts the outer end surface of the inner gear ring.

[0042] In this embodiment, if Figure 6 As shown, the first connecting component 22 is provided with a slide groove 222 and a plurality of positioning holes 221, and the clamping component 21 is provided with a positioning through hole, and the clamping component is installed in the slide groove 222 by means of bolts, the positioning holes 221 and the positioning through holes. When the clamping component 21 is fixedly connected to the first connecting component 22, the clamping component 21 is first inserted into the slide groove 222 from both ends of the first connecting component 22, and the clamping component 21 in the slide groove 222 is slid so that the positioning through holes on the clamping component 21 are aligned with the positioning holes 221 on the first connecting component 22, and then the clamping component 21 is rigidly connected and fixed to the first connecting component 22 using bolts.

[0043] In some feasible embodiments, a groove that matches the first connecting component can also be provided on the clamping component 21. In this way, when the clamping component 21 is fixedly connected to the first connecting component 22, the groove on the clamping component 21 is first aligned with the first connecting component 22 so that the clamping component 21 can be inserted into the slide groove 222. After the clamping component 21 is inserted into the slide groove 222, the groove wall of the clamping component 21 contacts the end face of the first connecting component 22, which can prevent the clamping component 21 from sliding out in the direction of the second connecting component 23.

[0044] In some feasible embodiments, the inner gear ring axial vibration measuring device further includes a height adjustment gasket 4, which is used to be installed between the clamping assembly 21 and the inner gear ring to achieve the fixation of the clamping device 2 and the inner gear ring. In order to make the size of the clamping device 2 meet the requirements of various inner gear rings as much as possible, the height adjustment gasket 4 is used to make up the gap between the width of the inner gear ring and the clamping device 2. The height adjustment gasket 4 is made of rigid material, which can well realize the axial vibration transmission and reduce the consumption of vibration during the transmission process.

[0045] In some feasible embodiments, the inner gear ring axial vibration measuring device further includes a bolt 3; a first screw hole is provided on the clamping assembly 21, and a second screw hole is provided on the inner gear ring, and the bolt 3 rigidly fixes the clamping assembly 21 to the inner gear ring through the first screw hole and the second screw hole. The clamping assembly 21 and the inner gear ring are fixed by the bolt 3, which is supported by a rigid material, and can realize a rigid connection between the clamping device 2 and the inner gear ring.

[0046] In some feasible embodiments, 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. In some feasible embodiments, the bracket 6 may be an inverted T-shaped bracket, such as Figure 5 As shown, the bottom of the inverted T-shaped bracket has a larger contact area, making the bracket more stable.

[0047] In some feasible embodiments, a third screw hole is provided on the second connecting component 23, and the third screw hole is parallel to the first connecting component 22, and the axial vibration sensor 5 is rotated into the second connecting component 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 axial vibration, and the axial vibration sensor 5 is fixed to the second connecting component 23 by screwing, which is more conducive to vibration collection.

[0048] Taking the first-stage planetary gear ring of the gearbox as an example, the axial vibration measurement test device is as follows: Figure 5 As shown. A small threaded hole is opened on the planetary inner gear ring of the gearbox, and the clamping device 2 is rigidly connected to the inner gear ring by bolts 3. During the test, the planetary inner gear ring of the gearbox, the clamping device 2 and the height adjustment gasket 4 are assembled by adjustment. Specifically, the installation position of the clamping component 21 in the clamping device 2 on the first connecting component 22 can be adjusted according to the width of the planetary inner gear ring of the gearbox, and then the height adjustment gasket 4 can be used for fine adjustment to realize the assembly of the planetary inner gear ring of the gearbox, the clamping device 2 and the height adjustment gasket 4. After the adjustment is completed, the inner gear ring of the gearbox and the clamping device 2 are fixed by bolts 3; the axial vibration sensor 5 is rotated into the second connecting component 23 through the threaded hole, and the clamping device 2 is fixed on the bracket 6. The structure of the second-stage and third-stage planetary inner gear ring test devices of the gearbox is similar.

[0049] A second aspect of the present application provides a method for measuring the axial vibration of an inner gear ring, using the inner gear ring axial vibration measuring device described above. The method adopts a method of deriving the axial vibration of the planetary-level inner gear ring of the gear box through a rigid structure, designs a clamping device 2, and installs the axial vibration sensor 5 on the rigid clamping device 2 to measure the axial vibration of the inner gear ring, thereby solving the problem of being unable to obtain the axial vibration information of the planetary-level inner gear ring due to spatial position limitations.

[0050] The inner gear ring axial vibration measurement method comprises: S1: rigidly connecting the inner gear ring axial vibration measuring device to the inner gear ring; In some feasible embodiments, the inner gear ring axial vibration measuring device is rigidly connected to the inner gear ring, including: The thickness of the height adjustment gasket 4 and the length of the bolt are determined according to the technical parameters of the inner gear ring. In some feasible embodiments, the technical parameters of the planetary inner gear ring of the gearbox to be tested are first confirmed, including the width, wall thickness, material, and clearance between the inner gear ring surface and the gear pair, and then the position of the positioning hole where the clamping assembly 21 is fixed on the first connecting assembly 22 is determined according to the spacing between the clamping assemblies 21 at both ends of the first connecting assembly 22 after the clamping assembly 21 is fixed on different positioning holes on the first connecting assembly 22. Here, the spacing between the clamping assemblies 21 at both ends of the first connecting assembly 22 is greater than the width of the inner gear ring, and the difference between the width of the inner gear ring is the smallest. Then, the thickness of the height adjustment gasket 4 and the length of the bolt and other parameters are determined according to the difference between the spacing between the clamping assemblies 21 after fixing and the width of the inner gear ring.

[0051] Place the height adjustment gasket 4 between the clamping assembly 21 and the outer end surface of the inner gear ring. Screw in the bolt 3 from the first screw hole to fix the inner gear ring to the clamping assembly 21, so as to achieve a rigid connection between the inner gear ring axial vibration measuring device and the inner gear ring.

[0052] The axial vibration sensor 5 is screwed into the second connecting component 23. The second connecting component 23 of the clamping device 2 is inserted into the window on the bracket 6. The window adopts a smooth contact surface to reduce friction and reduce the impact on the measurement result.

[0053] S2: Start the gearbox to obtain the axial vibration data of the inner gear ring at different speeds. In the embodiment of the present application, the axial vibration data of the inner gear ring at one speed is taken as a group of data, and several groups of axial vibration data of the inner gear ring are obtained by switching several groups of speeds.

[0054] Before actually measuring, it is necessary to carefully check the connection of each component, for example, whether the connection between the clamping device 2 and the inner gear ring 1 is loose, whether the bolt 3 and the height adjustment gasket 4 are loose or damaged, etc.

[0055] During the measurement process, it is necessary to check the data output of the axial vibration sensor 5 to see whether the output axial vibration meets expectations.

[0056] The measured axial vibration data of the inner gear ring can be used to analyze the vibration and faults of the inner gear ring, provide more information and analysis methods for the research and development of gearboxes in the existing wind power industry and the resolution of on-site transmission chain problems, and adopt effective measures in a targeted manner to reduce the vibration and noise levels of wind power gearboxes, thereby enabling them to operate safely and reliably, which will help to further improve the design and manufacture of wind power gearboxes.

[0057] S3: Adjust the connection position between the inner gear ring axial vibration measuring device and the inner gear ring, and obtain the inner gear ring axial vibration data at different speeds again. Similarly, after adjusting the connection position between the inner gear ring axial vibration measuring device and the inner gear ring, start the gear box and obtain the inner gear ring axial vibration data at different speeds.

[0058] In some feasible embodiments, the connection position includes: the root position of the inner gear ring and the position between two teeth of the inner gear ring. 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 first-stage inner gear ring, the axial vibration measurement of the second-stage and third-stage inner gear rings is performed.

[0059] Through the above technical scheme, the axial vibration measuring device of the inner gear ring of the present application can transmit the axial vibration of the inner gear ring to the axial vibration sensor 5, and the axial vibration of the inner gear ring of the wind turbine gearbox is measured by the axial vibration sensor 5. The measured axial vibration of the inner gear ring can feedback the gearbox operating status information, providing data support for fault detection, etc.

[0060] Those skilled in the art will understand that all or part of the steps in the method for implementing the above-mentioned embodiments can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including several instructions for making a single-chip microcomputer, a chip or a processor execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0061] The optional embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the technical concept of the embodiments of the present invention, the technical scheme of the embodiments of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the embodiments of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0062] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed in the embodiments of the present invention.

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); The clamping device (2) is rigidly connected to the inner gear ring (1) so as to transmit the axial vibration of the inner gear ring (1) to the axial vibration sensor (5).

2. The internal gear ring axial vibration measuring device according to claim 1, characterized in that: 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); and the axial vibration sensor (5) is fixed on the second connecting assembly (23).

3. The internal gear ring axial vibration measuring device according to claim 2, characterized in that: The first connecting component (22) is provided with a slide groove (222) and a plurality of groups 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 bolts (3), the positioning holes (221) and the positioning through holes.

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

5. The internal gear ring axial vibration measuring device according to claim 2, characterized in that: The inner gear ring axial vibration measuring device further comprises a bolt (3); a first screw hole is formed on the clamping assembly (21), and a second screw hole is formed on the inner gear ring (1); the bolt (3) rigidly fixes the clamping assembly (21) and the inner gear ring (1) through the first screw hole and the second screw hole.

6. The internal gear ring axial vibration measuring device according to claim 2, 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.

7. The internal gear ring axial vibration measuring device according to claim 2, characterized in that: The second connecting component (23) is provided with a third screw hole, the third screw hole is parallel to the direction of the first connecting component (22), and the axial vibration sensor (5) is rotated into the second connecting component (23) through the third screw hole.

8. A method for measuring the axial vibration of an inner gear ring, characterized in that: The internal gear ring axial vibration measuring device according to any one of claims 1 to 6 is applied, and the internal gear ring axial vibration measuring method comprises: Rigidly connecting the inner gear ring axial vibration measuring device 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, and the inner gear ring axial vibration data at different rotation speeds is obtained again.

9. The method for measuring the axial vibration of an inner gear ring according to claim 8, 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); Placing a height adjustment gasket (4) between the clamping assembly (21) and the outer end surface of the inner gear ring (1), and screwing a bolt (3) into the first screw hole to fix the inner gear ring (1) and the clamping assembly (21), thereby achieving a 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).

10. The method for measuring the axial vibration of an inner gear ring according to claim 8, characterized in that: The connection positions include: a tooth root position of the inner gear ring and a position between two teeth of the inner gear ring.

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