Main shaft multidirectional detection device and wind power gear box

Abstract

The utility model belongs to the technical field of wind power gear boxes, and discloses a spindle multidirectional detection device and a wind power gear box. The spindle multidirectional detection device comprises an axial detection unit and a radial detection unit, the axial detection unit comprises a first displacement sensor, a first assembly component and a first mounting hole formed in one end, close to a motor, of a spindle sleeve, and the first assembly component is arranged in the first mounting hole; the first displacement sensor is detachably arranged on the first assembling component; the radial detection unit comprises a second displacement sensor, a second assembling assembly and a second mounting hole formed in the end, close to the motor, of the main shaft sleeve, the second assembling assembly is arranged in the second mounting hole, and the second displacement sensor is detachably arranged on the second assembling assembly. According to the wind power gear box, the axial displacement and the radial displacement of the main shaft can be measured at the same time, and the displacement of the main shaft in the actual operation process of the wind power gear box is obtained, so that design and production of the wind power gear box are guided.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power gear boxes, in particular to a main shaft multi-directional detection device and a wind power gear box. Background Art

[0002] The wind turbine gearbox is one of the key components in the wind power generation assembly. Its main function is to transmit the power generated by the impeller under the action of wind to the generator through the transmission shaft, so that it can obtain the corresponding speed and thus generate electricity. When the wind turbine gearbox is in normal operation, the torque is transmitted through the rotation of the main shaft. The output end of the main shaft is directly rigidly connected to the planetary carrier and the ring gear in the gearbox. During operation, the main shaft will be subject to the internal and external loads of the gearbox. Under the action of the load, the main shaft will undergo axial and radial deformation and displacement, which will affect the design structure and strength of the gearbox. If the influence of this factor is not considered during the design of the gearbox, there will be a major safety hazard. Utility Model Content

[0003] The utility model aims to provide a main shaft multi-directional detection device and a wind turbine gear box, which have a simple structure and are easy to assemble and disassemble, and can improve the safety of the wind turbine gear box during operation.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The multi-directional spindle detection device comprises:

[0006] An axial detection unit, the axial detection unit comprising a first displacement sensor, a first assembly component, and a first mounting hole provided on an end of the main shaft sleeve close to the motor, the first assembly component being arranged in the first mounting hole, the first displacement sensor being detachably arranged on the first assembly component, and the first displacement sensor being used to measure the distance between the first displacement sensor and the main shaft along the axial direction of the main shaft;

[0007] A radial detection unit, the radial detection unit includes a second displacement sensor, a second assembly component and a second mounting hole opened on one end of the main shaft sleeve close to the motor, the second assembly component is arranged in the second mounting hole, the second displacement sensor is detachably arranged on the second assembly component, and the second displacement sensor is used to measure the distance between the second displacement sensor and the main shaft along the radial direction of the main shaft.

[0008] Preferably, the first assembly component includes a first mounting tube, the first mounting tube is detachably disposed in the first mounting hole, and the first displacement sensor is penetrated in the first mounting tube and threadedly connected to the first mounting tube.

[0009] Preferably, the first assembly component further includes a first connecting nut, the first connecting nut is threadedly connected in the first mounting hole, and the first mounting tube is penetrated in the first connecting nut and threadedly connected to the first connecting nut.

[0010] Preferably, the first assembly component further includes a first locking nut, which is screwed onto the end of the first mounting tube extending out of the first connecting nut, and the first locking nut is tightly pressed against the first connecting nut.

[0011] Preferably, the first connecting nut includes a first connecting portion and a first abutting portion connected to each other, the first connecting portion is provided with an external thread, the first connecting portion is screwed into the first mounting hole, the first abutting portion abuts against the main shaft sleeve outside the first mounting hole, and the first locking nut abuts against the first abutting portion.

[0012] Preferably, the second assembly component includes a second mounting tube, the second mounting tube is detachably disposed in the second mounting hole, and the second displacement sensor is penetrated in the second mounting tube and threadedly connected to the second mounting tube.

[0013] Preferably, the second assembly component further includes a second connecting nut, the second connecting nut is threadedly connected in the second mounting hole, and the second mounting tube is penetrated in the second connecting nut and threadedly connected to the second connecting nut.

[0014] Preferably, the second assembly component further includes a second locking nut, the second locking nut is screwed onto the end of the second mounting tube extending out of the second connecting nut, and the second locking nut is tightly pressed against the second connecting nut.

[0015] Preferably, a plurality of the axial detection units and the radial detection units are arranged along the circumference of the main shaft.

[0016] A wind power gearbox comprises a main shaft, a main shaft sleeve and the main shaft multi-directional detection device.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a multi-directional detection device for a main shaft. Since the first mounting hole is provided at one end of the main shaft sleeve close to the motor, a first assembly component is provided in the first mounting hole, and a first displacement sensor is detachably provided on the first assembly component, the first displacement sensor can measure the distance between the main shaft and the main shaft along the axial direction of the main shaft, so the axial detection unit can accurately measure the axial displacement of the main shaft; since the second mounting hole is provided at one end of the main shaft sleeve close to the motor, a second assembly component is provided in the second mounting hole, and a second displacement sensor is detachably provided on the second assembly component, the second displacement sensor can measure the distance between the main shaft and the main shaft along the radial direction of the main shaft, so the radial detection unit can accurately measure the deformation of the end of the main shaft; the multi-directional detection device for the main shaft can simultaneously measure the axial and radial displacements of the main shaft to obtain the deformation amount of the main shaft during operation, so as to facilitate the staff to make targeted adjustments and designs to the gearbox to reduce the adverse effects caused by the deformation of the main shaft and ensure the safe operation of the wind power gearbox.

[0019] The wind turbine gearbox provided by the utility model comprises a main shaft, a main shaft sleeve and the above-mentioned main shaft multi-directional detection device, which can simultaneously measure the axial and radial displacements of the main shaft to obtain the displacement of the main shaft during the actual operation of the wind turbine gearbox, thereby guiding the design and production of the wind turbine gearbox to reduce the adverse effects caused by the main shaft deformation and ensure the safe operation of the wind turbine gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of a wind power gearbox provided by a specific embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0022] In the figure:

[0023] 100-spindle;

[0024] 200-spindle sleeve;

[0025] 300-bearing;

[0026] 1-axial detection unit; 11-first displacement sensor; 12-first mounting hole; 13-first assembly component; 131-first mounting cylinder; 132-first connecting nut; 1321-first connecting portion; 1322-first abutting portion; 133-first locking nut;

[0027] 2- radial detection unit; 21- second displacement sensor; 22- second mounting hole; 23- second assembly component; 231- second mounting cylinder; 232- second connecting nut; 2321- second connecting portion; 2322- second abutting portion; 233- second locking nut. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] like Figure 1As shown, the utility model provides a multi-directional detection device for a spindle, which includes an axial detection unit 1 and a radial detection unit 2. The axial detection unit 1 includes a first displacement sensor 11, a first assembly component 13, and a first mounting hole 12 opened on an end of a spindle sleeve 200 close to the motor. The first assembly component 13 is arranged in the first mounting hole 12. The first displacement sensor 11 is detachably arranged on the first assembly component 13. The first displacement sensor 11 is used to measure the distance between the first displacement sensor 11 and the spindle 100 along the axial direction of the spindle 100. In this embodiment, since the first mounting hole 12 is opened on an end of the spindle sleeve 200 close to the motor, the first assembly component 13 is arranged in the first mounting hole 12 and the first displacement sensor 11 is detachably arranged on the first assembly component 13. The first displacement sensor 11 can measure the distance between itself and the spindle 100 along the axial direction of the spindle 100, so the axial detection unit 1 can accurately measure the axial displacement of the spindle 100.

[0033] The radial detection unit 2 includes a second displacement sensor 21, a second assembly component 23, and a second mounting hole 22 opened on one end of the main shaft sleeve 200 close to the motor, the second assembly component 23 is arranged in the second mounting hole 22, the second displacement sensor 21 is detachably arranged on the second assembly component 23, and the second displacement sensor 21 is used to measure the distance between the second displacement sensor 21 and the main shaft 100 along the radial direction of the main shaft 100. In this embodiment, since the second mounting hole 22 is opened on one end of the main shaft sleeve 200 close to the motor, the second assembly component 23 is arranged in the second mounting hole 22 and the second displacement sensor 21 is detachably arranged on the second assembly component 23, the second displacement sensor 21 can measure the distance between itself and the main shaft 100 along the radial direction of the main shaft 100, so the radial detection unit 2 can accurately measure the radial deformation of the end of the main shaft 100. The main shaft multi-directional detection device is mainly used in the structural design stage before the mass production of wind turbine gearboxes. By measuring the displacement of the main shaft 100 of the wind turbine gearbox during the test, the displacement of the main shaft 100 of the wind turbine gearbox during the actual operation of the wind turbine gearbox can be obtained, so as to make targeted adjustments and improvements to the structure of the gearbox, guide the design and production of the wind turbine gearbox, reduce the adverse effects caused by the deformation of the main shaft 100, and ensure the safe operation of the wind turbine gearbox.

[0034] Furthermore, if Figure 2As shown, the first assembly component 13 includes a first mounting cylinder 131, which is detachably arranged in the first mounting hole 12, and the first displacement sensor 11 is inserted into the first mounting cylinder 131 and is threadedly connected to the first mounting cylinder 131. In this embodiment, the first mounting cylinder 131 is a hollow cylindrical structure, which is installed in the first mounting hole 12, and the first displacement sensor 11 is installed in the first mounting cylinder 131. The first mounting cylinder 131 can effectively protect the first displacement sensor 11; the probe of the first displacement sensor 11 extends out of the first mounting cylinder 131 and is aligned with the bearing 300 or the bearing 300 pressure plate on the main shaft 100 near one end of the motor along the axial direction of the main shaft 100, so as to measure the displacement of the main shaft 100 along the axial direction.

[0035] Specifically, Figure 2 As shown, the first assembly component 13 further includes a first connecting nut 132, which is threadedly connected to the first mounting hole 12, and a first mounting tube 131 is inserted into the first connecting nut 132 and threadedly connected to the first connecting nut 132. In this embodiment, the first connecting nut 132 has an internal thread and an external thread, and the first mounting tube 131 has an external thread matching the first connecting nut 132. The first mounting tube 131 is installed in the first mounting hole 12 through the first connecting nut 132, and the measuring position of the first displacement sensor 11 relative to the spindle 100 can be adjusted by screwing the first mounting tube 131, thereby facilitating the adjustment and disassembly of the first displacement sensor 11.

[0036] Specifically, Figure 2 As shown, the first assembly component 13 also includes a first locking nut 133, which is screwed on the end of the first mounting tube 131 extending out of the first connecting nut 132, and the first locking nut 133 is pressed against the first connecting nut 132. In this embodiment, the first mounting tube 131 is threadedly connected to the first mounting hole 12 through the first connecting nut 132, and the first locking nut 133 is also screwed on the first mounting tube 131, and the first locking nut 133 is pressed against the first connecting nut 132, which can apply a force along the length direction of the first mounting tube 131 to the first connecting nut 132, thereby increasing the friction between the first mounting tube 131 and the first connecting nut 132, thereby locking the first mounting tube 131 and preventing the first mounting tube 131 and the first connecting nut 132 from loosening.

[0037] Specifically, Figure 2As shown, the first connecting nut 132 includes a first connecting portion 1321 and a first abutting portion 1322 that are connected to each other. The first connecting portion 1321 is provided with an external thread. The first connecting portion 1321 is screwed into the first mounting hole 12. The first abutting portion 1322 abuts against the main shaft sleeve 200 outside the first mounting hole 12, and the first locking nut 133 abuts against the first abutting portion 1322. In this embodiment, the cross-section of the first connecting nut 132 is a convex shape, the first abutment portion 1322 and the first connecting portion 1321 are both hollow cylindrical structures, the outer diameter of the first abutment portion 1322 is larger than the outer diameter of the first connecting portion 1321, the first connecting portion 1321 is screwed into the first mounting hole 12, and the outer diameter of the first abutment portion 1322 is larger than the inner diameter of the first mounting hole 12, so that the first abutment portion 1322 can abut against the main shaft sleeve 200 outside the first mounting hole 12 for positioning; the first locking nut 133 abuts against the first abutment portion 1322, thereby realizing the locking of the first mounting tube 131.

[0038] Furthermore, if Figure 2 As shown, the second assembly component 23 includes a second mounting tube 231, which is detachably arranged in the second mounting hole 22, and the second displacement sensor 21 is inserted into the second mounting tube 231 and is threadedly connected to the second mounting tube 231. In this embodiment, the structure of the second assembly component 23 is the same as that of the first assembly component 13, the second mounting tube 231 is a hollow cylindrical structure, the second displacement sensor 21 is installed in the second mounting tube 231, and the second mounting tube 231 can effectively protect the second displacement sensor 21; the first displacement sensor 11 and the second displacement sensor 21 are the same, both of which are eddy current sensors commonly used in the art, and can accurately measure the distance between the measured object and the probe, and their specific structure and implementation principle are not repeated here. The probe of the second displacement sensor 21 extends out of the second mounting tube 231 and is aligned with one end of the main shaft 100 close to the motor along the radial direction of the main shaft 100, so as to measure the radial deformation of the main shaft 100.

[0039] Specifically, Figure 2As shown, the second assembly component 23 also includes a second connecting nut 232, which is threadedly connected to the second mounting hole 22, and a second mounting tube 231 is inserted into the second connecting nut 232 and threadedly connected to the second connecting nut 232. In this embodiment, the structure of the second connecting nut 232 is the same as that of the first connecting nut 132, the second connecting nut 232 has an internal thread and an external thread, and the second mounting tube 231 has an external thread matching the second connecting nut 232. The second mounting tube 231 is installed in the second mounting hole 22 through the second connecting nut 232, and the measuring position of the second displacement sensor 21 relative to the spindle 100 can be adjusted by screwing the second mounting tube 231, thereby facilitating the adjustment and disassembly of the second displacement sensor 21.

[0040] Specifically, Figure 2 As shown, the second assembly component 23 also includes a second locking nut 233, which is screwed on the end of the second mounting tube 231 extending out of the second connecting nut 232, and the second locking nut 233 is tightly pressed against the second connecting nut 232. In this embodiment, the second connecting nut 232 includes a second connecting portion 2321 and a second abutting portion 2322 connected to each other, and the cross section of the second connecting nut 232 is a convex shape. The second abutting portion 2322 and the second connecting portion 2321 are both hollow cylindrical structures, and the outer diameter of the second abutting portion 2322 is larger than the outer diameter of the second connecting portion 2321. The second connecting portion 2321 is screwed into the second mounting hole 22, and the outer diameter of the second abutting portion 2322 is larger than the inner diameter of the second mounting hole 22, so the second abutting portion 2322 can abut against the On the main shaft sleeve 200 outside the second mounting hole 22; the second locking nut 233 has the same structure as the first locking nut 133, and the second locking nut 233 is tightly pressed against the second abutment portion 2321 of the second connecting nut 232, and can apply a force along the length direction of the second mounting cylinder 231 to the second connecting nut 232, thereby increasing the friction between the second mounting cylinder 231 and the second connecting nut 232, thereby locking the second mounting cylinder 231 and preventing the second mounting cylinder 231 and the second connecting nut 232 from loosening.

[0041] Furthermore, multiple axial detection units 1 and radial detection units 2 are provided along the circumference of the main shaft 100. In this embodiment, multiple axial detection units 1 and radial detection units 2 are evenly spaced along the circumference of the main shaft 100. In the structural design stage of the wind power gearbox, the staff can fit the axial displacement at different positions on the end face of the main shaft 100 detected by multiple axial detection units 1, so as to obtain a more accurate average axial displacement of the main shaft 100; similarly, the staff can also fit the radial deformation at different circumferential positions of the end of the main shaft 100 detected by multiple radial detection units 2, so as to obtain a more accurate average radial deformation of the main shaft 100, providing accurate guidance for the structural design of the wind power gearbox.

[0042] The utility model also provides a wind power gearbox, which includes a main shaft 100, a main shaft sleeve 200 and the above-mentioned main shaft multi-directional detection device. The wind power gearbox can simultaneously measure the axial and radial displacements of the main shaft 100 to obtain the displacement of the main shaft 100 during the actual operation of the wind power gearbox, thereby guiding the design and production of the wind power gearbox, reducing the adverse effects caused by the deformation of the main shaft 100, and ensuring the safe operation of the wind power gearbox.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. The spindle multi-directional detection device is characterized by: include: An axial detection unit (1), the axial detection unit (1) comprising a first displacement sensor (11), a first assembly component (13), and a first mounting hole (12) provided on an end of a main shaft sleeve (200) close to the motor, the first assembly component (13) being arranged in the first mounting hole (12), the first displacement sensor (11) being detachably arranged on the first assembly component (13), and the first displacement sensor (11) being used to measure the distance between the first displacement sensor (11) and the main shaft (100) along the axial direction of the main shaft (100); A radial detection unit (2), the radial detection unit (2) comprising a second displacement sensor (21), a second assembly component (23), and a second mounting hole (22) provided on one end of the main shaft sleeve (200) close to the motor, the second assembly component (23) being arranged in the second mounting hole (22), the second displacement sensor (21) being detachably arranged on the second assembly component (23), and the second displacement sensor (21) being used to measure the distance between the second displacement sensor (21) and the main shaft (100) along the radial direction of the main shaft (100).

2. The spindle multi-directional detection device according to claim 1, characterized in that: The first assembly component (13) comprises a first mounting tube (131), the first mounting tube (131) being detachably arranged in the first mounting hole (12), the first displacement sensor (11) being inserted into the first mounting tube (131) and being threadedly connected to the first mounting tube (131).

3. The multi-directional spindle detection device according to claim 2, characterized in that: The first assembly component (13) further comprises a first connecting nut (132), wherein the first connecting nut (132) is threadedly connected in the first mounting hole (12), and the first mounting tube (131) is passed through the first connecting nut (132) and is threadedly connected to the first connecting nut (132).

4. The spindle multi-directional detection device according to claim 3, characterized in that: The first assembly component (13) also includes a first locking nut (133), which is screwed on the end of the first mounting tube (131) extending out of the first connecting nut (132), and the first locking nut (133) is tightly pressed against the first connecting nut (132).

5. The spindle multi-directional detection device according to claim 4, characterized in that: The first connecting nut (132) includes a first connecting portion (1321) and a first abutting portion (1322) connected to each other, the first connecting portion (1321) is provided with an external thread, the first connecting portion (1321) is screwed into the first mounting hole (12), the first abutting portion (1322) abuts against the main shaft sleeve (200) outside the first mounting hole (12), and the first locking nut (133) abuts against the first abutting portion (1322).

6. The spindle multi-directional detection device according to claim 1, characterized in that: The second assembly component (23) comprises a second mounting tube (231), the second mounting tube (231) is detachably arranged in the second mounting hole (22), and the second displacement sensor (21) is inserted into the second mounting tube (231) and is threadedly connected to the second mounting tube (231).

7. The multi-directional spindle detection device according to claim 6, characterized in that: The second assembly component (23) further comprises a second connecting nut (232), wherein the second connecting nut (232) is threadedly connected in the second mounting hole (22), and the second mounting tube (231) is passed through the second connecting nut (232) and threadedly connected to the second connecting nut (232).

8. The spindle multi-directional detection device according to claim 7, characterized in that: The second assembly component (23) also includes a second locking nut (233), which is screwed onto the end of the second mounting tube (231) extending out of the second connecting nut (232), and the second locking nut (233) is tightly pressed against the second connecting nut (232).

9. The spindle multi-directional detection device according to claim 1, characterized in that: A plurality of the axial detection units (1) and the radial detection units (2) are arranged along the circumference of the main shaft (100).

10. Wind power gearbox, characterized in that: It comprises a main shaft (100), a main shaft sleeve (200) and a main shaft multi-directional detection device according to any one of claims 1 to 9.

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