Vibration testing device of wind power gear box

Abstract

The utility model belongs to the technical field of wind power equipment testing, particularly relates to a vibration testing device of a wind power gear box, and provides the following scheme aiming at the problem that the vibration amplitude of the wind power gear box is difficult to measure really when the vibration testing is carried out on the wind power gear box in the prior art. A supporting pipe is fixedly installed on the inner wall of the top of the suction box in a penetrating mode, an installation plate is fixedly installed at the top end of the supporting pipe, the testing device further comprises a testing mechanism, the testing mechanism is installed at the top of the installation plate, and the bottom of the testing mechanism penetrates through the supporting pipe and extends into the suction box. According to the wind power gear box vibration detection device, after the suction box is tightly adsorbed on the wind power gear box, vibration generated by the wind power gear box can be detected in the normal operation process of the wind power gear box, so that accurate vibration data of the wind power gear box can be obtained, and the wind power gear box vibration detection device has good practicability.

Description

Technical Field

[0001] This utility model relates to the field of wind power equipment testing technology, and in particular to a vibration testing device for wind turbine gearboxes. Background Technology

[0002] The wind turbine gearbox is an important component in a wind turbine generator set. It is mainly used to transmit the rotational power of the wind turbine to the generator and is subjected to a working environment with high speed and heavy load. In the production and inspection of wind turbine gearboxes, it is necessary to simulate the vibration data during their use to ensure their reliability. According to the announcement number CN221826469U, a vibration testing device for wind turbine gearboxes is disclosed.

[0003] The aforementioned technical solution requires placing the wind turbine gearbox on a support plate when testing it. However, the gearbox itself does not have driving force; it is mainly connected to the fan blades of the wind turbine. The fan blades can only drive the gearbox when subjected to natural wind force. However, this technical solution mainly relies on providing a constant driving force to drive the gearbox during testing. Such a testing method often makes it difficult to accurately measure the vibration amplitude of the gearbox. Therefore, we propose a vibration testing device for wind turbine gearboxes to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies that make it difficult to accurately measure the vibration amplitude of wind turbine gearboxes during vibration testing, and to propose a vibration testing device for wind turbine gearboxes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A vibration testing device for a wind turbine gearbox includes an attraction box mounted on the wind turbine gearbox, a support tube fixedly installed through the top inner wall of the attraction box, and an installation plate fixedly installed at the top end of the support tube. The testing device also includes:

[0007] The testing mechanism is installed on the top of the mounting plate. The bottom of the testing mechanism passes through the support tube and extends into the suction box. The bottom of the testing mechanism is in contact with the wind turbine gearbox. The testing mechanism is used to detect the vibration generated by the wind turbine gearbox during normal operation.

[0008] The suction mechanism is installed on the support tube, with its top extending into the support tube. The suction mechanism is used to extract the gas from the suction box so that the suction box can be stably adsorbed onto the wind turbine gearbox.

[0009] The adjustment mechanism is installed on the support tube and is located below the suction mechanism. The adjustment mechanism is connected to the suction mechanism and is used to drive the suction mechanism to move.

[0010] In one possible design, the testing mechanism includes a vibration sensor fixedly mounted on the top of the mounting plate, a ball-head test rod fixedly mounted on the vibration sensor, the bottom end of the ball-head test rod passing through the mounting plate and the support tube and extending into the suction box, and the bottom end of the ball-head test rod connecting with the wind turbine gearbox.

[0011] In one possible design, the suction mechanism includes a support frame fixedly sleeved on a support tube, a support frame on which multiple suction components are installed at equal intervals, the top of each suction component extending into the support tube and connecting to the inner side wall of the support tube, the bottom of the multiple suction components being connected to the same connecting frame, and the bottom of the connecting frame being connected to an adjustment mechanism.

[0012] In one possible design, the suction assembly includes a suction cylinder fixedly mounted on a support frame. A suction pipe is fixedly mounted on the top inner wall of the suction cylinder. The top end of the suction pipe extends into the support pipe and is fixedly connected to one side inner wall of the support pipe. A piston plate is slidably connected inside the suction cylinder. A moving rod is fixedly mounted on the bottom of the piston plate. A limiting frame located below the piston plate is fixedly mounted inside the suction cylinder. The bottom end of the moving rod passes through the limiting frame and extends to the bottom of the suction cylinder. The moving rod is slidably connected to the limiting frame. The bottom end of the moving rod is fixedly connected to the top of the connecting frame.

[0013] In one possible design, the adjustment mechanism includes a first slip ring fixedly mounted on the bottom of the connecting frame, a second slip ring rotatably sleeved on the first slip ring, an externally threaded tube fixedly sleeved on the support tube, a threaded ring threaded on the externally threaded tube, the bottom end of the second slip ring extending below the first slip ring and fixedly connected to the top of the threaded ring, and a hand ring fixedly sleeved on the threaded ring.

[0014] In one possible design, a sealing plate is fixedly installed at the bottom of the mounting plate, and a sealing ring is fixedly installed on the inner side wall of the support tube. The bottom of the sealing plate extends into the support tube and seals against the top of the sealing ring.

[0015] In one possible design, a rigid sealing ring is fixedly installed at the bottom opening of the suction box, and the rigid sealing ring is tightly fitted to the wind turbine gearbox.

[0016] In this application, when conducting vibration testing on an operating wind turbine gearbox, the suction box can be placed on the gearbox. By rotating the hand ring, the threaded ring is rotated. Under the threaded transmission with the external threaded tube, the threaded ring can move downwards. This, driven by the first and second slip rings, can move the connecting frame downwards, thereby pulling multiple moving rods downwards simultaneously. As the moving rods move downwards, they can drive the corresponding piston plates downwards. When the piston plates move downwards, they can generate suction, thereby dispersing and absorbing the gas in the suction box and support tube into multiple suction cylinders through multiple suction pipes. This maintains a negative pressure state in the suction box and support tube, allowing the suction box to adhere to the wind turbine gearbox. This ensures that the bottom end of the ball-head test rod remains in contact with the wind turbine gearbox, so that the vibration generated during the operation of the wind turbine gearbox can be transmitted to the ball-head test rod, and then to the vibration sensor. The vibration sensor is used to detect and record the vibration generated by the wind turbine gearbox.

[0017] Beneficial effects: In this utility model, the vibration testing device for a wind turbine gearbox, through the testing mechanism, can install the suction box on the wind turbine gearbox in the form of negative pressure suction. At this time, the bottom end of the ball head test rod can be kept in contact with the wind turbine gearbox, so that the vibration generated by the wind turbine gearbox during operation can be transmitted to the ball head test rod, thereby transmitting the vibration to the vibration sensor, and using the vibration sensor to detect and record the vibration generated by the wind turbine gearbox;

[0018] In this utility model, the vibration testing device for a wind turbine gearbox can drive the connecting frame to move downward through the suction mechanism and the operation of the adjustment mechanism. At this time, multiple suction components can be operated simultaneously to draw out the gas in the suction box and the support tube, thereby maintaining a negative pressure device in the suction box, so that the suction box can be stably adsorbed on the wind turbine gearbox.

[0019] In this utility model, the vibration testing device for a wind turbine gearbox can drive the connecting frame to move downward through the adjustment mechanism. At this time, multiple moving rods can be driven downward simultaneously, thereby driving multiple piston plates to move downward. When the piston plates move downward, they can generate suction, which can disperse and absorb the gas in the suction box and support tube into multiple suction cylinders through multiple suction pipes. This can maintain a negative pressure state in the suction box and support tube, so that the suction box can be adsorbed onto the wind turbine gearbox.

[0020] This invention, by tightly adsorbing the suction box onto the wind turbine gearbox, can detect the vibration generated by the wind turbine gearbox during normal operation, thereby obtaining accurate vibration data of the wind turbine gearbox, and thus has good practicality. Attached Figure Description

[0021] Figure 1 A three-dimensional schematic diagram of the engagement structure between the suction box and the wind turbine gearbox of the vibration testing device for a wind turbine gearbox proposed in this utility model.

[0022] Figure 2 A top-view three-dimensional schematic diagram of the connection structure between the suction box and the support tube of a vibration testing device for a wind turbine gearbox proposed in this utility model.

[0023] Figure 3 A three-dimensional schematic diagram from an elevation view of the connection structure between the suction box and the support tube of a vibration testing device for a wind turbine gearbox proposed in this utility model.

[0024] Figure 4 This is a three-dimensional schematic diagram of the support tube, multiple suction cylinders, connecting ring and external threaded pipe connection structure of a vibration testing device for a wind turbine gearbox proposed in this utility model.

[0025] Figure 5 This is a cross-sectional view of the support tube structure of a vibration testing device for a wind turbine gearbox proposed in this utility model.

[0026] In the diagram: 1. Wind turbine gearbox; 2. Suction box; 3. Hard sealing ring; 4. Support tube; 41. Sealing ring; 5. Mounting plate; 51. Sealing plate; 6. Vibration sensor; 7. Ball head test rod; 8. Support frame; 9. Suction cylinder; 10. Inhalation pipe; 11. Limiting frame; 12. Moving rod; 13. Piston plate; 14. Connecting frame; 15. First slip ring; 16. Second slip ring; 17. Threaded ring; 18. External threaded tube; 19. Hand ring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1: Refer to Figure 1-5 A testing device mainly includes an attraction box 2 installed on a wind turbine gearbox 1, a support tube 4 fixedly installed through the top inner wall of the attraction box 2, and an installation plate 5 fixedly installed at the top of the support tube 4.

[0029] Regarding the testing mechanism, a vibration sensor 6 is fixedly installed on the top of the mounting plate 5, and a ball-head test rod 7 is fixedly installed on the vibration sensor 6. The bottom end of the ball-head test rod 7 passes through the mounting plate 5 and the support tube 4 and extends into the suction box 2, connecting with the wind turbine gearbox 1. In this way, after the suction box 2 is installed on the wind turbine gearbox 1 in the form of negative pressure suction, the bottom end of the ball-head test rod 7 can maintain close contact with the wind turbine gearbox 1. When the wind turbine gearbox 1 is running, the vibration generated can be transmitted to the vibration sensor 6 through the ball-head test rod 7, and the vibration sensor 6 detects and records the vibration generated by the wind turbine gearbox 1.

[0030] Regarding the suction mechanism, a support frame 8 is fixedly mounted on the support tube 4, and multiple suction components are installed at equal intervals on the support frame 8. The top of each suction component extends into the support tube 4 and connects to the inner side wall of the support tube 4. The bottom ends of the multiple suction components are connected to a connecting frame 14. The specific structure of the suction components is as follows: a suction cylinder 9 is fixedly mounted on the support frame 8, and a suction pipe 10 is fixedly mounted on the top inner wall of the suction cylinder 9. The top of the suction pipe 10 extends into the support tube 4 and is fixedly connected to the inner side wall of the support tube 4. A piston plate 13 is slidably connected inside the suction cylinder 9, and a moving rod 12 is fixedly mounted at the bottom of the piston plate 13. A limiting frame 11 located below the piston plate 13 is also fixedly mounted inside the suction cylinder 9. The bottom end of the moving rod 12 passes through the limiting frame 11 and extends to the bottom of the suction cylinder 9, slidably connecting with the limiting frame 11. At the same time, the bottom end of the moving rod 12 is fixedly connected to the top of the connecting frame 14. In this way, when the connecting frame 14 moves downward, it can simultaneously drive multiple moving rods 12 downward, which in turn drives multiple piston plates 13 downward. During the downward movement of the piston plates 13, a suction force is generated, which disperses and absorbs the gas in the suction box 2 and the support tube 4 through multiple suction pipes 10 into multiple suction cylinders 9, so that the suction box 2 and the support tube 4 are kept in a negative pressure state, thereby enabling the suction box 2 to be stably adsorbed on the wind turbine gearbox 1.

[0031] Regarding the adjustment mechanism, a first slip ring 15 is fixedly installed at the bottom of the connecting frame 14, and a second slip ring 16 is rotatably sleeved on the first slip ring 15. An externally threaded tube 18 is fixedly sleeved on the support tube 4, and a threaded ring 17 is threadedly sleeved on the externally threaded tube 18. The bottom end of the second slip ring 16 extends below the first slip ring 15 and is fixedly connected to the top of the threaded ring 17. A hand ring 19 is fixedly sleeved on the threaded ring 17. By rotating the hand ring 19, the threaded ring 17 can be rotated. At this time, under the threaded transmission action with the externally threaded tube 18, the threaded ring 17 will move downwards. Thus, driven by the first slip ring 15 and the second slip ring 16, the connecting frame 14 will also move downwards, thereby pulling multiple moving rods 12 downwards simultaneously.

[0032] To ensure the device's airtightness, a sealing plate 51 is fixedly installed at the bottom of the mounting plate 5, and a sealing ring 41 is fixedly installed on the inner side wall of the support tube 4. The bottom of the sealing plate 51 extends into the support tube 4 and fits tightly against the top of the sealing ring 41. In this way, when the mounting plate 5 is installed on the support tube 4, the support tube 4 can be well sealed, preventing leakage from occurring inside the support tube 4.

[0033] This application can be used in the field of wind power equipment testing technology, or in other fields applicable to this application.

[0034] Example 2: Reference Figure 2 and 3 Based on Embodiment 1, an improvement is made to a vibration testing device for a wind turbine gearbox, which is applied to the field of wind power equipment testing technology. A hard sealing ring 3 is also fixedly installed at the bottom opening of the suction box 2. The hard sealing ring 3 is tightly fitted to the wind turbine gearbox 1. This further prevents external gas from entering the suction box 2 when it is adsorbed onto the wind turbine gearbox 1, ensuring the tightness and stability of the suction box 2's adsorption onto the wind turbine gearbox 1.

[0035] However, as is well known to those skilled in the art, the working principle and wiring method of the vibration sensor 6 are commonplace and are all conventional methods or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0036] 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 the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vibration testing device for a wind turbine gearbox, comprising an attraction box (2) mounted on the wind turbine gearbox (1), a support pipe (4) is fixedly installed through the inner wall of the top of the attraction box (2), and a mounting plate (5) is fixedly installed at the top end of the support pipe (4), characterized in that, The testing device further comprises: a testing mechanism installed on the top of the mounting plate (5), the bottom of the testing mechanism penetrating through the support pipe (4) and extending into the suction box (2), the bottom of the testing mechanism being in contact with the wind power gear box (1), the testing mechanism being used for detecting the vibration of the wind power gear box (1) during normal operation of the wind power gear box (1); a suction mechanism installed on the support pipe (4), the top of the suction mechanism extending into the support pipe (4), the suction mechanism being used for sucking out the gas in the suction box (2) so that the suction box (2) can be stably adsorbed on the wind power gear box (1); an adjusting mechanism installed on the support pipe (4), the adjusting mechanism being located below the suction mechanism, the adjusting mechanism being connected with the suction mechanism, the adjusting mechanism being used for driving the suction mechanism to move.

2. The vibration testing device of a wind power gear box according to claim 1, characterized in that, The testing mechanism comprises a vibration sensor (6) fixedly installed on the top of the mounting plate (5), a ball head testing rod (7) fixedly installed on the vibration sensor (6), the bottom end of the ball head testing rod (7) penetrating through the mounting plate (5) and the support pipe (4) and extending into the suction box (2), and the bottom end of the ball head testing rod (7) being in contact with the wind power gear box (1).

3. The vibration testing device of a wind power gear box according to claim 1, characterized in that, The suction mechanism comprises a support frame (8) fixedly sleeved on the support pipe (4), a plurality of air suction assemblies being installed on the support frame (8) at equal intervals, the top end of each air suction assembly extending into the support pipe (4) and being connected with the inner wall of one side of the support pipe (4), the bottom end of each air suction assembly being connected with the same connecting frame (14), and the bottom of the connecting frame (14) being connected with the adjusting mechanism.

4. The vibration testing device of a wind power gear box according to claim 3, characterized in that, The air suction assembly comprises a suction cylinder (9) fixedly installed on the support frame (8), an air suction pipe (10) fixedly installed on the top inner wall of the suction cylinder (9), the top end of the air suction pipe (10) extending into the support pipe (4) and being fixedly connected with the inner wall of one side of the support pipe (4), a piston plate (13) being sealingly and slidably connected in the suction cylinder (9), a moving rod (12) being fixedly installed on the bottom of the piston plate (13), a limiting frame (11) being fixedly installed in the suction cylinder (9) below the piston plate (13), the bottom end of the moving rod (12) penetrating through the limiting frame (11) and extending below the suction cylinder (9), the moving rod (12) being slidably connected with the limiting frame (11), and the bottom end of the moving rod (12) being fixedly connected with the top of the connecting frame (14).

5. The vibration testing device of a wind power gear box according to claim 1, characterized in that, The adjusting mechanism comprises a first sliding ring (15) fixedly installed on the bottom of the connecting frame (14), a second sliding ring (16) rotatably sleeving the first sliding ring (15), an outer threaded pipe (18) fixedly sleeving the support pipe (4), a threaded ring (17) threadedly sleeving the outer threaded pipe (18), the bottom end of the second sliding ring (16) extending below the first sliding ring (15) and being fixedly connected with the top of the threaded ring (17), and a hand ring (19) fixedly sleeving the threaded ring (17).

6. The vibration testing device of a wind power gear box according to claim 1, characterized in that, The bottom of the mounting plate (5) is fixedly provided with a sealing plate (51), and the inner wall of the side of the supporting pipe (4) is fixedly provided with a sealing ring (41), and the bottom of the sealing plate (51) extends into the supporting pipe (4) and is in sealing fit with the top of the sealing ring (41).

7. The vibration testing device of a wind power gear box according to claim 1, characterized in that, The bottom of the suction box (2) is fixedly provided with a hard sealing rubber ring (3) at the opening position, and the hard sealing rubber ring (3) is in close fit with the wind power gear box (1).

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