CN219932763U - Fixing device for bearing diagnosis of wind driven generator - Google Patents

Abstract

The utility model relates to a fixing device for wind driven generator bearing diagnosis, and belongs to the technical field of wind driven generator bearings. The fixing device comprises a fixing seat, a supporting component and an anti-falling component. The fixing seat comprises a circular ring part and a circular tube part, the circular ring part can be opened or closed relatively, and the circular tube part is fixedly connected to the circular ring part. The circular array of supporting component installs in pipe portion, and supporting component includes cantilever beam, bracing piece, nut one and knob. One end of the suspension rod is rotationally connected with the inner wall of the round pipe part, the other end of the suspension rod is rotationally connected with the supporting rod, one end of the first nut is rotationally connected with one end of the supporting rod, the other end of the first nut is in threaded connection with the knob, and the knob is rotationally connected on the round ring part. The utility model adopts the fixing seat and the supporting rod as the supporting parts of the bearing diagnosis device, so that a plurality of sensors of the bearing diagnosis device are arranged at proper positions, the monitoring of the bearing and the rotating shaft is realized, and the utility model has the characteristics of wide application range and high stability.

Description

Fixing device for bearing diagnosis of wind driven generator

Technical Field

The utility model relates to a wind driven generator bearing, in particular to a fixing device for diagnosing the wind driven generator bearing.

Background

The bearing diagnosis device of the wind driven generator generally comprises the following structures: and (3) a bracket: the fixing device is usually made of a firm metal material at the generator bearing to ensure stability and reliability; a sensor: the sensor is used for detecting parameters such as vibration, temperature, noise and the like of the bearing, and usually adopts an accelerometer, a temperature sensor, a sound sensor and the like; and a data acquisition system: the data acquisition system is used for receiving, processing and analyzing the data acquired by the sensor, and is usually composed of a microprocessor, a memory, a communication module and the like.

The bearing diagnosis device is used for monitoring the performance data of the bearing and simultaneously monitoring the performance data of the rotating shaft of the wind driven generator, so that the performance of the bearing is comprehensively analyzed, and whether the bearing has faults or potential faults is judged. When the existing bearing diagnosis device monitors for a long time, the bearing diagnosis device is interfered due to the vibration of the bearing, so that the stability of the bearing diagnosis device is not high, and if the bearing diagnosis device falls off from the bearing, the bearing diagnosis device is directly contacted with the rotating shaft, falls off or rotates along with the rotating shaft under the driving of the rotating shaft, and the bearing diagnosis device has larger damage risk. In addition, the existing bearing diagnosis device is often designed depending on bearings and rotating shafts with fixed sizes, is difficult to be applied to the rotating shafts of wind driven generators with different sizes, and when a plurality of wind driven generator bearings are detected, the manufacturing and design cost is also increased, and particularly, the bearing diagnosis device cannot be used alternately in short-term monitoring, so that the diagnosis cost is increased.

Disclosure of Invention

Accordingly, it is necessary to provide a fixing device for diagnosing a bearing of a wind turbine, which solves the problems that the conventional bearing diagnosing device is disturbed by vibration of the bearing, has a risk of falling off, and cannot be applied to the rotating shafts of wind turbines having different sizes.

The utility model is realized by the following technical scheme: a fixing device for wind driven generator bearing diagnosis comprises a fixing seat and at least three supporting components.

The fixing seat comprises a circular ring part and a circular tube part. The circular ring part and the circular tube part are coaxially arranged and fixedly connected. The ring part and the bearing are coaxially arranged and fixedly connected on the bearing. The ring part is formed by detachably connecting two semicircular ring parts. The round tube part is composed of two semicircular tube parts, and each semicircular tube part is fixedly connected to one semicircular ring part. At least three sliding grooves are formed in the inner wall of the circular tube portion.

The circular array of support assemblies is mounted within the circular tube portion. The support assembly comprises a suspension rod, a support rod, a first nut and a knob. One end of the suspension rod is rotationally connected with the inner wall of the round pipe part. The middle section of the supporting rod is rotationally connected with the other end of the suspension rod to form a lever structure. A sliding block is arranged on the outer wall of one side of the first nut and is in sliding connection with the sliding groove. One end of the first nut is rotationally connected with one end of the supporting rod, and the other end of the first nut is in threaded connection with the knob. The knob is rotatably connected to the circular ring part, and the rotating surface of the suspension rod is coplanar with the central shaft of the knob and the central shaft of the circular tube part respectively.

According to the fixing device, the fixing seat which can be opened relatively is arranged, the fixing device can be quickly detached or installed on the bearing of the wind driven generator, and the fixing seat and the supporting rod are adopted as supporting components of the bearing diagnosis device, so that a plurality of sensors of the bearing diagnosis device are installed at proper positions, and the monitoring of the bearing and the rotating shaft is realized. The bracing piece with adjustable can adapt to the pivot of multiple size difference, and application scope is wide, and detachable fixing base can satisfy the short-term monitoring to different aerogenerators, reduces monitoring cost.

Further, the knob includes a screw portion, a driving portion, and a rotation shaft portion that are coaxially disposed in order. One end of the screw rod part is in threaded connection with the nut, and the other end of the screw rod part is fixedly connected with one side of the driving part. The circular tube part is provided with a through groove opposite to the driving part. The other side of the driving part is fixedly connected with one end of the rotating shaft part. The other end of the rotating shaft part is rotationally connected to the annular part.

Further, the support assembly further comprises a first roller, the first roller is arranged on one end, away from the first nut, of the support rod, and the central shaft of the first roller is coplanar with the rotating surface of the suspension rod. The first roller can be used as an auxiliary supporting component to integrally support the fixing device and improve the stability of the fixing device.

Further, the fixing device further comprises at least three anti-falling assemblies, and the anti-falling assemblies are arranged on the circular tube part in a circular array. The anti-drop subassembly includes gyro wheel second, gyro wheel support, screw rod, nut second, rotating base and stopper, and rotating base fixed connection is on the outer wall of pipe portion. The circular tube part is provided with a through hole for the screw rod to pass through. The second nut is rotationally connected in the rotating base. One end of the screw rod is in threaded connection with the nut two, and the other end of the screw rod penetrates through the through hole and is fixedly connected with the roller bracket. The second roller is rotatably connected to the roller support, and the central axis of the second roller is parallel to the central axis of the circular tube. And a limit groove is formed in the outer wall of the screw. One side of the limiting block is fixedly connected to the inner wall of the through hole, and the other side of the limiting block is in sliding connection with the limiting groove. If in long-term monitoring, the ring part drops from the bearing, two of the rollers are attached to the rotating shaft, and the rollers are used for integrally supporting the fixing device.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the fixing device, the fixing seat which can be opened relatively is arranged, so that the fixing device can be quickly detached or installed on a bearing of a wind driven generator, and the fixing seat and the supporting rod are adopted as supporting components of the bearing diagnosis device, so that a plurality of sensors of the bearing diagnosis device are installed at proper positions, and the monitoring of the bearing and the rotating shaft is realized. The bracing piece with adjustable can adapt to the pivot of multiple size difference, and application scope is wide, and detachable fixing base can satisfy the short-term monitoring to different aerogenerators, reduces monitoring cost.

2. According to the utility model, three rotary knobs are synchronously rotated, so that the three support rods keep the included angle approximately the same as that of the round tube part until the three rollers simultaneously contact or are close to the rotating shaft. The first roller can be used as an auxiliary supporting component, so that the whole fixing device is supported, the stability of the fixing device is improved, and the performance monitoring of the rotating shaft can be realized by measuring the pressure change between the first roller and the rotating shaft or the rotating speed change of the first roller, and the first roller is used as reference data for diagnosing the performance of the bearing.

3. According to the utility model, the second nut is rotated, and the screw rod moves along the direction of the limit groove of the screw rod under the action of the limit block, so that the second roller is driven to be close to or far from the rotating shaft. If in long-term monitoring, the ring part drops from the bearing, two of the rollers are attached to the rotating shaft, and the rollers are used for integrally supporting the fixing device. Or the first roller and the second roller are adjusted to be in contact with the rotating shaft in advance to serve as additional support for the fixing device, so that the fixing device is prevented from falling off from the bearing, and the installation stability of the fixing device is improved.

Drawings

FIG. 1 is a schematic perspective view of a fixing device for diagnosing a wind turbine bearing according to embodiment 1 of the present utility model;

FIG. 2 is a schematic perspective view of the fixing base in FIG. 1 when opened;

FIG. 3 is a schematic view of a partial perspective view of the fastening device of FIG. 1;

FIG. 4 is a side view of the fixture of FIG. 1;

FIG. 5 is a schematic cross-sectional view of the fixing device of FIG. 4 along the direction A-A;

FIG. 6 is another perspective view of a wind turbine bearing diagnostic fixture;

FIG. 7 is a partial perspective view of the fixture of FIG. 6;

FIG. 8 is an enlarged schematic view of the structure shown at B in FIG. 5;

FIG. 9 is a schematic view of the structure of FIG. 8 with the screw, roller support and roller II removed;

fig. 10 is a schematic partial perspective view of the anti-drop assembly of fig. 1.

Description of the main reference signs

The reference numerals in the figures are: 1. a fixing seat; 11. a circular ring portion; 111. a semicircular ring portion; 12. a circular tube part; 121. a semicircular tube part; 2. a support assembly; 21. a suspension rod; 22. a support rod; 23. a first nut; 24. a knob; 241. a screw portion; 242. a driving section; 243. a rotating shaft portion; 25. a roller I; 3. an anti-drop assembly; 31. a second roller; 32. a roller bracket; 33. a screw; 331. a limit groove; 34. a second nut; 35. a rotating base; 36. and a limiting block.

The foregoing general description of the utility model will be described in further detail with reference to the drawings and detailed description.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that when an element is referred to as being "mounted to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1-10, the present embodiment provides a fixing device for diagnosing a bearing of a wind turbine, which is installed on a bearing of the wind turbine to support the bearing diagnosing device, so that the bearing diagnosing device is located at a preset position to diagnose the bearing. The fixing device comprises a fixing seat 1, at least three supporting components 2 and at least three anti-falling components 3. For convenience of description of the structure and positional relationship of the components, in this embodiment, the number of the supporting members 2 and the anti-falling members 3 is three, however, in other embodiments, the number of the supporting members 2 and the anti-falling members 3 may be more, but preferably not more than six.

Referring to fig. 2, the fixing base 1 includes a circular ring portion 11 and a circular tube portion 12. The circular ring part 11 is coaxially arranged with the circular tube part 12 and fixedly connected. The annular part 11 is coaxially arranged with the bearing and fixedly connected to the bearing. The annular portion 11 is formed by detachably connecting two semicircular annular portions 111. The two semicircular ring parts 111 are oppositely arranged, and are respectively connected with one side in a rotating way, and the other side is connected with one another in a clamping way. In this embodiment, the annular portion 11 is provided with a mounting hole and a fixing hole. The fixing holes are used for installing the annular part 11 on the bearing of the wind driven generator in a bolt connection mode. In the actual installation process, the annular part 11 can be fixedly connected with the bearing in a threaded connection, bonding, magnetic attraction and other modes, so that the annular part 11 can be conveniently dismounted. The mounting hole is used for mounting the bearing diagnosis device, so that partial sensors of the bearing diagnosis device face the bearing for detection, such as a temperature sensor, a vibration sensor and the like, and monitoring of the performance of the bearing part is realized.

The circular tube portion 12 is constituted by two semicircular tube portions 121, and each semicircular tube portion 121 is fixedly connected to one semicircular ring portion 111. According to the structure of the fixing seat 1, the fixing seat 1 can be split into an upper cover and a lower cover, both of which are composed of a semicircular ring part 111 and a semicircular tube part 121, and the fixing seat 1 is sleeved outside the rotating shaft by relatively opening or closing the fixing seat, so that the fixing seat 1 is installed on the bearing by installing the semicircular ring part 111. The circular tube portion 12 is located outside the rotating shaft of the wind driven generator and is coaxially arranged with the rotating shaft.

At least three sliding grooves are formed in the inner wall of the circular tube portion 12. The chute is in sliding connection with the first nut 23 of the support assembly 2 and is used for limiting the first nut 23.

Referring to fig. 3-5, the support assemblies 2 are mounted in a circular array within the tubular portion 12. The support assembly 2 includes a hanger bar 21, a support bar 22, a first nut 23, a knob 24, and may further include a first roller 25. One end of the suspension rod 21 is rotatably connected to the inner wall of the circular tube portion 12. The rotation surface of the suspension rod 21 is coplanar with the central axis of the circular tube portion 12.

The middle section of the supporting rod 22 is rotatably connected with the other end of the suspension rod 21 to form a lever structure. A slide block is arranged on the outer wall of one side of the first nut 23 and is in sliding connection with the sliding groove. One end of the first nut 23 is rotatably connected with one end of the supporting rod 22, and the other end is in threaded connection with the knob 24. The knob 24 is rotatably connected to the annular portion 11, and the central axis of the knob 24 is also coplanar with the rotation surface of the hanger bar 21.

The knob 24 includes a screw portion 241, a driving portion 242, and a rotation shaft portion 243 coaxially disposed in this order. One end of the screw portion 241 is screwed with the first nut 23, and the other end is fixedly connected to one side of the driving portion 242. The circular tube portion 12 is provided with a through groove facing the driving portion 242. The other side of the driving portion 242 is fixedly connected to one end of the rotating shaft portion 243. The other end of the rotation shaft portion 243 is rotatably connected to the annular portion 11.

The support rod 22 can be used for installing other sensors of the bearing diagnosis device to monitor the rotating shaft of the wind driven generator, so that the performance of the bearing is analyzed according to the operation data side of the rotating shaft. Through turning knob 24, can adjust the whole gradient of bracing piece 22, make the one end that nut one 23 was kept away from to bracing piece 22 be close to or keep away from the pivot, and then adjust the interval of other sensors of bearing diagnostic device and pivot, realize the accurate monitoring to pivot performance. Specifically, by rotating the knob 24, the first nut 23 slides along the chute to approach or depart from the knob 24, and simultaneously, one end of the support rod 22 is driven to move synchronously, so as to drive the suspension rod 21 to swing, so that the height of the joint of the suspension rod 21 and the support rod 22 is changed, and the other end of the support rod 22 is driven to approach or depart from the rotating shaft.

The roller one 25 is mounted on an end of the support rod 22 remote from the nut one 23, and a central axis of the roller one 25 is coplanar with a rotation surface of the suspension rod 21. The first roller 25 may be in contact with the rotating shaft or may be attached to the rotating shaft. During the installation of the fixture, the three support rods 22 are held at approximately the same angle as the tubular portion 12 by simultaneously rotating the three knobs 24 until the three rollers 25 are simultaneously in contact with or near the axis of rotation. When the roller one 25 contacts the rotating shaft, the roller one 25 is driven to synchronously rotate by the rotating shaft. In some embodiments, performance monitoring of the shaft may be achieved by measuring pressure changes between the roller one 25 and the shaft or rotational speed changes of the roller one 25 as reference data for bearing performance diagnostics.

As described above with reference to fig. 6-7, the fixing device of the present embodiment can be quickly detached from or installed on the bearing of the wind driven generator by providing the fixing seat 1 that can be opened relatively, and the fixing seat 1 and the supporting rod 22 are used as the supporting components of the bearing diagnosis device, so that the plurality of sensors of the bearing diagnosis device are installed at suitable positions, and the monitoring of the bearing and the rotating shaft is realized. The adjustable bracing piece 22 can adapt to the pivot of multiple size difference, and application scope is wide, and detachable fixing base 1 can satisfy the short-term monitoring to different aerogenerators, reduces monitoring cost. In addition, the roller I25 can be used as an auxiliary supporting component to realize the integral support of the fixing device and improve the stability of the fixing device.

Referring to fig. 8-10, the anti-drop assemblies 3 are mounted in a circular array on the circular tube portion 12. The anti-falling assembly 3 comprises a roller II 31, a roller bracket 32, a screw 33, a nut II 34, a rotating base 35 and a limiting block 36. The swivel base 35 is fixedly attached to the outer wall of the circular tube portion 12. The circular tube portion 12 is provided with a through hole through which the screw 33 passes. The swivel base 35 may be integrally formed with the circular tube portion 12, or may be fixedly connected to the circular tube portion 12 by welding or the like. The rotary base 35 is generally tubular, and has a center axis perpendicular to and coplanar with the center axis of the tubular portion 12.

The second nut 34 is rotatably coupled within the swivel base 35. One end of the screw 33 is in threaded connection with the second nut 34, and the other end of the screw passes through the through hole and is fixedly connected with the roller bracket 32. The second roller 31 is rotatably connected to the roller bracket 32, and the central axis of the second roller 31 is parallel to the central axis of the circular tube portion 12. The outer wall of the screw 33 is provided with a limit groove 331. One side of the limiting block 36 is fixedly connected to the inner wall of the through hole, and the other side of the limiting block is in sliding connection with the limiting groove 331.

The anti-falling assembly 3 is used as follows: and the second nut 34 is rotated, and under the action of the limiting block 36, the screw 33 moves along the direction of the limiting groove 331 of the second nut, so that the second roller 31 is driven to be close to or far from the rotating shaft. At the initial installation, each roller two 31 moves to be equal to the interval of the rotating shaft. If the ring 11 falls off from the bearing during long-term monitoring, two of the rollers 31 are attached to the rotating shaft, the rollers 31 are used for integrally supporting the fixing device, and in addition, at least one roller 25 is attached to the rotating shaft, so that other parts of the fixing device are prevented from being worn by contact with the rotating shaft. In some embodiments, the first roller 25 and the second roller 31 may be adjusted to contact with the rotating shaft in advance, so as to serve as an additional support for the fixing device, avoid the fixing device from falling off from the bearing, and improve the installation stability of the fixing device.

In other embodiments, a spring damper may be installed between the roller one 25 and the support rod 22, and between the roller two 31 and the roller support 32, so that the roller one 25 and the roller two 31 can have an adaptively adjusted distance after contacting the rotating shaft, and damage caused by rigid contact with the rotating shaft is avoided, so as to prolong the service life of the fixing device.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (4)

1. The fixing device is arranged on a bearing of a wind driven generator and is used for supporting the bearing diagnosis device so that the bearing diagnosis device can be positioned at a preset position to diagnose the bearing; characterized in that it comprises:

the fixing seat (1) comprises a circular ring part (11) and a circular tube part (12); the circular ring part (11) and the circular tube part (12) are coaxially arranged and fixedly connected; the annular part (11) and the bearing are coaxially arranged and fixedly connected to the bearing; the ring part (11) is formed by detachably connecting two semicircular ring parts (111); the circular tube part (12) is composed of two semicircular tube parts (121), and each semicircular tube part (121) is fixedly connected to one semicircular ring part (111); at least three sliding grooves are formed in the inner wall of the circular tube part (12);

at least three support assemblies (2) mounted in circular arrays within the tubular portion (12); the support assembly (2) comprises a suspension rod (21), a support rod (22), a first nut (23) and a knob (24); one end of the suspension rod (21) is rotationally connected with the inner wall of the circular tube part (12); the middle section of the supporting rod (22) is rotationally connected with the other end of the suspension rod (21) to form a lever structure; a sliding block is arranged on the outer wall of one side of the first nut (23), and the sliding block is connected in the sliding groove in a sliding way; one end of the first nut (23) is rotationally connected with one end of the supporting rod (22), and the other end of the first nut is in threaded connection with the knob (24); the knob (24) is rotatably connected to the annular part (11), and the rotation surface of the suspension rod (21) is coplanar with the central axis of the knob (24) and the central axis of the circular tube part (12) respectively.

2. The fixing device for diagnosis of a wind turbine bearing according to claim 1, wherein the knob (24) includes a screw portion (241), a driving portion (242), and a rotating shaft portion (243) coaxially arranged in this order; one end of the screw rod part (241) is in threaded connection with the first nut (23), and the other end of the screw rod part is fixedly connected with one side of the driving part (242); the circular tube part (12) is provided with a through groove opposite to the driving part (242); the other side of the driving part (242) is fixedly connected with one end of the rotating shaft part (243); the other end of the rotating shaft part (243) is rotatably connected to the annular part (11).

3. The fixing device for diagnosing a wind turbine bearing according to claim 1, wherein the supporting assembly (2) further comprises a roller one (25), the roller one (25) is mounted on an end of the supporting rod (22) away from the nut one (23), and a central axis of the roller one (25) is coplanar with a rotation surface of the suspension rod (21).

4. The fixing device for diagnosing a wind turbine bearing according to claim 1, further comprising at least three anti-falling assemblies (3), wherein the anti-falling assemblies (3) are mounted on the circular tube portion (12) in a circular array; the anti-falling assembly (3) comprises a roller II (31), a roller bracket (32), a screw (33), a nut II (34), a rotating base (35) and a limiting block (36), wherein the rotating base (35) is fixedly connected to the outer wall of the circular tube part (12); the circular tube part (12) is provided with a through hole for the screw rod (33) to pass through; the second nut (34) is rotatably connected in the rotary base (35); one end of the screw rod (33) is in threaded connection with the second nut (34), and the other end of the screw rod passes through the through hole and is fixedly connected with the roller bracket (32); the second roller (31) is rotatably connected to the roller bracket (32), and the central axis of the second roller (31) is parallel to the central axis of the circular tube part (12); a limit groove (331) is formed in the outer wall of the screw (33); one side of the limiting block (36) is fixedly connected to the inner wall of the through hole, and the other side of the limiting block is in sliding connection with the limiting groove (331).