A wind power gear box planetary mechanism uniform load performance testing device

Abstract

The utility model provides a kind of wind power gear box planetary mechanism uniform load performance testing device, it is related to the front integrated machine type wind power gear box planetary mechanism uniform load performance testing technical field. Including: primary gear ring, secondary gear ring, tertiary gear ring, its strain gauge lead-out wire is fixed and connected to strain gauge respectively through middle one box body first out-line hole, middle one box body second out-line hole, middle two box body out-line hole;Primary sun gear, secondary sun gear, tertiary sun gear, its strain gauge lead-out wire respectively passes through primary sun gear threading pipe inlet hole, secondary sun gear threading pipe inlet hole, tertiary sun gear threading pipe inlet hole into threading pipe, is connected to slip ring after being led out by first threading pipe outlet or second threading pipe outlet respectively;Parallel level gear, its strain gauge lead-out wire is connected to slip ring after being led out from second threading pipe outlet after entering threading pipe through parallel level gear threading pipe out-line hole;Slip ring is double-layer structure, for transmitting the strain signal on rotating sun gear to strain testing equipment.

Description

Technical Field

[0001] This utility model relates to the field of load sharing performance testing technology for planetary mechanisms of wind turbine gearboxes with integrated front-end models, and more specifically, to a test device for load sharing performance testing of planetary mechanisms of wind turbine gearboxes. Background Technology

[0002] A wind turbine gearbox is a specialized mechanical device used in wind power generation. Its main function is to transmit the power generated by the wind turbine under wind power to the generator, enabling it to achieve the corresponding rotational speed and thus generate electricity. Wind turbines often operate in harsh environments, which places extremely high demands on gear strength. To ensure the simultaneous analysis of meshing data of the ring gear, sun gear, and parallel stage large gears, and to evaluate the predictive ability of numerical simulation by comparing measured data with simulation results, thereby improving the reliability and accuracy of the model, a new method for testing the load-sharing performance of planetary mechanisms is needed to improve the reliability of the gearbox.

[0003] Currently, existing planetary mechanism load-sharing performance testing devices can only test the root stress of rotating or non-rotating components individually. They cannot collect data on the simultaneous meshing of the ring gear and sun gear of a planetary mechanism, nor can they study the load distribution among multiple planetary gears under different loads.

[0004] The inadequate comparison between measured data and simulation results fails to improve the reliability and accuracy of the model. Therefore, a novel load-sharing performance testing device for wind turbine gearbox planetary mechanisms is urgently needed to address this issue. Utility Model Content This invention provides a load-sharing performance testing device for planetary gear mechanisms in wind turbine gearboxes. It can simultaneously test the root stress of rotating and non-rotating components, collect data on the simultaneous meshing of the ring gear and sun gear, and study the load distribution among multiple planetary gears under different loads. This device can simultaneously collect strain data from the ring gear, sun gear, and speed ratio gear on the same gearbox, enabling better analysis of the gearbox's load distribution and facilitating the analysis of the entire planetary gear train's system load transmission behavior.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A wind turbine gearbox planetary mechanism load-sharing performance testing device includes: a first-stage gear ring, a second-stage gear ring, and a third-stage gear ring, whose strain gauge lead wires are fixed and connected to the strain gauge through the first lead wire hole of the first housing, the second lead wire hole of the first housing, and the lead wire hole of the second housing, respectively. The strain gauge leads of the first-stage sun gear, the second-stage sun gear, and the third-stage sun gear enter the conduit through the conduit inlet holes of the first-stage sun gear, the second-stage sun gear, and the third-stage sun gear, respectively, and are led out through the outlet of the first conduit or the outlet of the second conduit and connected to the slip ring. The strain gauge lead wires of the parallel-stage large gear enter the conduit through the wire outlet hole of the parallel-stage large gear and are led out from the outlet of the second conduit to the slip ring; the strain gauge lead wires of the parallel-stage large gear are aligned through the reserved holes on the third-stage sun gear and then pass through the conduit to the first slip ring, and extend from the first slip ring to the outside of the gearbox end cover to connect with the strain gauge. The slip ring has a double-layer structure, including a first slip ring and a second slip ring. The first slip ring is used to transmit strain signals of the second-stage sun gear, the third-stage sun gear and the parallel stage large gear, and the second slip ring is used to transmit strain signals of the first-stage sun gear. The axis of the conduit coincides with the axis of the sun gear, and the conduit passes through the central hole of the next-stage sun gear and extends to the outside of the gearbox housing.

[0006] Furthermore, the strain gauge lead wire of the first-stage sun gear enters the conduit through the inlet hole of the first-stage sun gear conduit and is connected to the second slip ring, then enters the main shaft through the outlet of the first conduit, and is connected to the strain gauge from the outlet of the main shaft.

[0007] Furthermore, the strain gauge lead wires of the secondary sun gear and the tertiary sun gear enter the conduit through the conduit inlet holes of the secondary sun gear and the tertiary sun gear, respectively, and are then led out from the outlet of the second conduit and connected to the first slip ring. They extend from the first slip ring to the outside of the gearbox end cover and are connected to the strain gauge.

[0008] Furthermore, the strain gauge lead wire of the first-stage gear ring is fixed in the housing by an R-shaped clamp and then led out from the first lead wire hole of the housing to connect to the strain gauge.

[0009] The beneficial effects of this utility model are as follows: 1. This device is the first to simultaneously perform strain tests on the sun gear, ring gear, and parallel stage large gear on a wind turbine gearbox integrated model. 2. Based on the structure of the gearbox itself, this device is designed with a sun gear wiring fixture. After the primary sun gear signal line is fixed to the slip ring, it exits from the main shaft, making full use of the internal space of the gearbox and preventing the cables of multi-stage rotating parts from getting tangled. 3. The apparatus of this application can simultaneously test the root stress of rotating and non-rotating components, collect data on the simultaneous meshing of the ring gear and sun gear in a planetary mechanism, and study the load distribution among multiple planetary gears under different loads. This apparatus can simultaneously collect strain data of the ring gear, sun gear, and speed ratio gear on the same gearbox. This allows for better analysis of the load distribution in the gearbox and makes it easier to analyze the system load transmission behavior of the entire planetary gear train.

[0010] This device can simultaneously perform strain tests on the gear ring, sun gear, and parallel stage large gear, improving testing efficiency. By comparing the measured data with the simulation results, the reliability and accuracy of the model are improved. Attached Figure Description

[0011] To more clearly illustrate the embodiments of this utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Explanation of icon numbers: 1. First-stage gear ring; 2. First cable outlet hole of the middle housing; 3. Second cable outlet hole of the middle housing; 4. Second-stage gear ring; 5. Cable outlet hole of the middle housing; 6. Third-stage gear ring; 7. First-stage sun gear; 8. Cable inlet hole of the first-stage sun gear cable guide tube; 9. First cable guide tube outlet; 10. Second-stage sun gear; 11. Cable inlet hole of the second-stage sun gear cable guide tube; 12. Cable inlet hole of the third-stage sun gear cable guide tube; 13. Third-stage sun gear; 14. Parallel stage large gear; 15. Cable outlet hole of the parallel stage large gear cable guide tube; 16. Second cable guide tube outlet; 17. First slip ring; 18. Second slip ring; 19. Main shaft. Detailed Implementation

[0014] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0017] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0018] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0019] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0020] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0021] This utility model provides a technical solution: a wind turbine gearbox planetary mechanism load-sharing performance testing device, comprising a first-stage gear ring 1, a first cable outlet hole 2 of the middle gearbox, a second cable outlet hole 3 of the middle gearbox, a second-stage gear ring 4, a cable outlet hole 5 of the middle gearbox, a third-stage gear ring 6, a first-stage sun gear 7, a cable inlet hole 8 of the first-stage sun gear cable tube, a first cable outlet hole 9, a second-stage sun gear 10, a cable inlet hole 11 of the second-stage sun gear cable tube, a cable inlet hole 12 of the third-stage sun gear cable tube, a third-stage sun gear 13, a parallel stage large gear 14, a cable outlet hole 15 of the parallel stage large gear cable tube, and a second cable outlet hole 16.

[0022] The strain gauge leads of the first-stage gear ring 1, the second-stage gear ring 4, and the third-stage gear ring 6 are fixed and connected to the strain gauge through the first outlet hole 2, the second outlet hole 3, and the outlet hole 5 of the middle box, respectively. The strain gauge leads of the first-stage sun gear 7, the second-stage sun gear 10, and the third-stage sun gear 13 enter the conduit through the conduit inlet hole 8 of the first-stage sun gear, the conduit inlet hole 11 of the second-stage sun gear, and the conduit inlet hole 12 of the third-stage sun gear, respectively, and are led out through the first conduit outlet 9 or the second conduit outlet 16 and connected to the slip ring. The strain gauge lead wire of the parallel stage large gear 14 enters the wire tube through the wire outlet hole 15 of the parallel stage large gear wire tube and then exits from the outlet 16 of the second wire tube and is connected to the slip ring. The slip ring has a double-layer structure and is used to transmit the strain signal from the rotating sun gear to the strain testing equipment.

[0023] The first slip ring 17 and the second slip ring 18 are used to transmit strain signals of the second-stage sun gear 10, the third-stage sun gear 13, the parallel-stage large gear 14 and the first-stage sun gear 7, respectively, and the slip rings have a double-layer structure.

[0024] The axis of the conduit coincides with the axis of the sun gear, and the conduit extends through the central hole of the next-stage sun gear to the outside of the gearbox housing.

[0025] like Figure 1 As shown, after attaching the strain gauges, the strain gauge wires are soldered to the lead wires. The strain gauge lead wire of the first-stage gear ring 1 is fixed to the end face of the first-stage gear ring 1, and then the signal wire is fixed inside the housing using an R-shaped clamp, exiting from the first exit hole 2 of the housing and connected to the strain gauge for strain testing. The strain gauge lead wire of the second-stage gear ring 4 is fixed to the end face of the second-stage gear ring 4, exiting from the second exit hole 3 of the housing and connected to the strain gauge for strain testing. The strain gauge lead wire of the third-stage gear ring 6 is fixed to the end face of the third-stage gear ring 6, exiting from the exit hole 5 of the housing and connected to the strain gauge for strain testing.

[0026] After the strain gauge lead wire of the first-stage sun gear 7 is fixed to the end face of the first-stage sun gear 7, it enters the conduit through the inlet hole 8 of the first-stage sun gear conduit and connects to the second slip ring 18. It then enters the main shaft 19 through the outlet 9 of the first conduit and exits from the main shaft 19 to connect to the strain gauge for strain testing. After the strain gauge lead wire of the second-stage sun gear 10 is fixed to the end face of the second-stage sun gear 10, it enters the conduit through the inlet hole 11 of the second-stage sun gear conduit and exits through the outlet 16 of the second conduit to connect to the first slip ring 17 for strain testing. After the strain gauge lead wire of the third-stage sun gear 13 is fixed to the end face of the third-stage sun gear 13, it enters the conduit through the inlet hole 12 of the third-stage sun gear conduit and exits through the outlet 16 of the second conduit to connect to the first slip ring 17 for strain testing. After the strain gauge lead wire of the secondary sun gear 10 is fixed to the end face of the secondary sun gear 10, it enters the conduit through the inlet hole 11 of the secondary sun gear conduit and exits through the outlet 16 of the second conduit before connecting to the first slip ring 17 for strain testing. After the strain gauge lead wire of the parallel gear 14 is fixed to the end face of the parallel gear 14, a hole is drilled in the tertiary sun gear during the initial processing, and the reserved holes are aligned during assembly. The strain gauge lead wire enters the conduit through the inlet hole 15 of the parallel gear conduit and exits through the outlet 16 of the second conduit before connecting to the first slip ring 17 for strain testing.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A test device for load-sharing performance of a planetary gearbox in a wind turbine gearbox, characterized in that, include: The strain gauge leads of the first-stage gear ring (1), the second-stage gear ring (4), and the third-stage gear ring (6) are fixed and connected to the strain gauge through the first outlet hole (2), the second outlet hole (3), and the outlet hole (5) of the first box, respectively. The strain gauge leads of the first-stage sun gear (7), the second-stage sun gear (10), and the third-stage sun gear (13) enter the conduit through the conduit inlet hole (8) of the first-stage sun gear, the conduit inlet hole (11) of the second-stage sun gear, and the conduit inlet hole (12) of the third-stage sun gear, respectively, and are led out through the outlet of the first conduit (9) or the outlet of the second conduit (16) and connected to the slip ring. The strain gauge lead wire of the parallel gear (14) enters the conduit through the conduit outlet hole (15) of the parallel gear and is led out from the outlet (16) of the second conduit and connected to the slip ring; the strain gauge lead wire of the parallel gear (14) is aligned through the reserved hole on the third sun gear (13) and then passes through the conduit to the first slip ring (17), and extends from the first slip ring (17) to the outside of the gearbox end cover to connect with the strain gauge; The slip ring has a double-layer structure, including a first slip ring (17) and a second slip ring (18). The first slip ring (17) is used to transmit strain signals of the second-stage sun gear (10), the third-stage sun gear (13) and the parallel stage large gear (14). The second slip ring (18) is used to transmit strain signals of the first-stage sun gear (7). The axis of the conduit coincides with the axis of the sun gear. The conduit passes through the central hole of the next-stage sun gear and extends to the outside of the gearbox housing.

2. The wind turbine gearbox planetary mechanism load-sharing performance testing device according to claim 1, characterized in that, The strain gauge lead wire of the first-stage sun gear (7) enters the conduit through the inlet hole (8) of the first-stage sun gear conduit and is connected to the second slip ring (18). Then it enters the main shaft (19) through the outlet (9) of the first conduit and is connected to the strain gauge from the main shaft (19).

3. The wind turbine gearbox planetary mechanism load-sharing performance testing device according to claim 1, characterized in that, The strain gauge lead wires of the secondary sun gear (10) and the tertiary sun gear (13) enter the conduit through the conduit inlet hole (11) of the secondary sun gear and the conduit inlet hole (12) of the tertiary sun gear, respectively, and are led out from the outlet (16) of the second conduit and connected to the first slip ring (17). The first slip ring (17) extends to the outside of the gearbox end cover and connects to the strain gauge.

4. The wind turbine gearbox planetary mechanism load-sharing performance testing device according to claim 1, characterized in that, The strain gauge lead wire of the first-stage gear ring (1) is fixed in the box body by an R-shaped clamp and then led out from the first lead wire hole (2) of the middle box body to connect to the strain gauge.

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