CN210978238U

CN210978238U - Sealing member, slewing bearing and bearing

Info

Publication number: CN210978238U
Application number: CN201921614882.5U
Authority: CN
Inventors: 张勇
Original assignee: Beijing Goldwind Smart Energy Service Co Ltd
Current assignee: Beijing Goldwind Smart Energy Service Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-07-10
Anticipated expiration: 2029-09-26

Abstract

The embodiment of the utility model provides a sealing member, slewing bearing and bearing, sealing member are used for slewing bearing, and slewing bearing includes the quiet circle and the movable coil that relatively can move, and sealing member is including the second magnetism portion that is used for with quiet circle sealing connection's first magnetism portion and is used for with movable coil sealing connection, and wherein, the magnetism of first magnetism portion is stronger than the magnetism of second magnetism portion. The utility model discloses sealing member not only can improve slewing bearing's sealing performance, extension sealing member's life, and does not influence the normal work of static circle and movable coil in the slewing bearing.

Description

Sealing member, slewing bearing and bearing

Technical Field

The utility model relates to a slewing bearing equipment technical field especially relates to a seal part, slewing bearing and bearing.

Background

In the wind power industry, a great amount of rubber sealing strips are used in a main bearing of a generator of a yaw bearing \ pitch bearing \ double-fed generator set main shaft bearing \ direct-drive wind driven generator. Of course, not only in the wind power industry, but also in other industries, the slewing bearing generally uses rubber sealing strips as sealing parts of the slewing bearing.

As the bearings age, the seal components are more likely to fail. Failure modes of the sealing component comprise rubber strip arching, strip breaking, falling and the like. Therefore, the sealing is not tight, lubricating grease in the bearing leaks out, pollution and grease shortage of the bearing are caused, external sand and dust can enter the bearing, dry friction and the like of a rolling body, a roller path, a retainer, an isolating block and the like are caused, and the grease is deteriorated early, so that the problems of early abrasion of the bearing, failure of the bearing and the like are caused.

Therefore, a new sealing member, slewing bearing and bearing are needed.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a sealing member, slewing bearing and bearing aims at solving the not tight problem of bearing seal.

An embodiment of the utility model provides a sealing component for slewing bearing, slewing bearing include relative movable quiet circle and movable coil, sealing component including be used for with quiet circle sealing connection's first magnetism portion and be used for with movable coil sealing connection's second magnetism portion, wherein, the magnetism of first magnetism portion department is stronger than the magnetism of second magnetism portion department.

According to an aspect of the present invention, the first magnetic part and the second magnetic part each contain magnetic particles therein.

According to an aspect of the present invention, the first magnetic portion includes a body and a magnetic patch attached to a surface of the body.

According to an aspect of the present invention, the body comprises:

the connecting part is connected with the second magnetic part and extends and forms along the first direction;

the inserting part is connected with the connecting part and is formed by the connecting part in an extending way along a second direction, and the second direction is intersected with the first direction;

wherein, the magnetic patch is attached to the outer surface of the connecting part.

According to an aspect of the utility model, the attached one side that deviates from in grafting portion in connecting portion of magnetism paster.

According to one aspect of the present invention, the connecting portion has a free end remote from the first magnetic portion,

the magnetic patch is disposed proximate the free end.

Or the magnetic patch is formed by extending the free end along the first direction, and in the first direction, the magnetic patch at least extends to one side of the insertion part facing the first magnetic part.

According to one aspect of the present invention, the body is circular;

the magnetic patch is annular and is matched with the body in shape;

or, the magnetic patches are distributed at intervals along the circumferential direction of the body.

According to one aspect of the present invention, the thickness of the magnetic patch is greater than or equal to 0.5 mm;

the thickness of the magnetic patch is less than or equal to 10mm, or the connecting part is provided with a free end far away from the first magnetic part, and the thickness of the magnetic patch is less than or equal to that of the free end.

The utility model discloses another aspect still provides a slewing bearing, including quiet circle, movable coil and foretell sealing member, first magnetism portion and quiet circle sealing connection, second magnetism portion and movable coil sealing connection and relative movable coil movable setting.

The present invention also provides a bearing including the above-mentioned sealing member.

The utility model discloses among the sealing member, sealing member includes first magnetism portion and second magnetism portion, wherein first magnetism portion be used for with slewing bearing's quiet circle sealing connection, the second magnetism portion be used for with slewing bearing's movable coil sealing connection. The first magnetic part and the second magnetic part are both provided with magnetism, so that the first magnetic part and the second magnetic part can be in sealing fit by utilizing magnetism and a slewing bearing. In the use process of the sealing component, even if the sealing component deforms, the sealing component can still be in sealing fit with the slewing bearing by utilizing magnetism, and therefore the sealing performance of the slewing bearing is guaranteed. First magnetism portion and quiet circle are sealed to be cooperated, then first magnetism portion and quiet circle are static relatively, and the magnetism of first magnetism portion department is stronger, can guarantee the stability of relative position between first magnetism portion and the quiet circle. When second magnetism portion and movable coil seal fit, second magnetism portion and movable coil have relative motion, and magnetism weak point of second magnetism portion department can also not influence the relative motion between second magnetism portion and the movable coil when guaranteeing the leakproofness between second magnetism portion and the movable coil. Therefore the utility model discloses sealing member not only can improve slewing bearing's sealing performance, extension sealing member's life, and do not influence the normal work of static circle and movable coil in the slewing bearing.

Drawings

Other features, objects and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like or similar reference characters identify the same or similar features.

Fig. 1 is a partial schematic structural view of a wind turbine generator system according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at I;

fig. 4 is a partial schematic structural view of a pivoting support according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a seal member according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a sealing member according to another embodiment of the present invention.

Description of reference numerals:

100. a sealing member;

110. a first magnetic part; 111. a body; 111a, a connecting portion; 111b, a plug part; 112. magnetic paster; 120. a second magnetic part; 130. magnetic particles;

200. a stationary ring; 210. inserting grooves;

300. and (4) moving the coil.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships only for convenience in describing the present invention and to simplify the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The directional terms appearing in the following description are directions shown in the drawings and do not limit the specific structure of the embodiments of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

For a better understanding of the present invention, the sealing member and the slewing bearing according to the embodiment of the present invention will be described in detail with reference to fig. 1 to 6.

Fig. 1 is a partial schematic structural view of a wind generating set according to an embodiment of the present invention, fig. 2 is a partial sectional view of fig. 1, and fig. 2 shows a schematic structural view of a slewing bearing, where the slewing bearing includes a moving coil 300, a stationary coil 200, and a sealing member 100, and the sealing member 100 is used for sealing and cooperating with the moving coil 300 and the stationary coil 200 to realize sealing of the slewing bearing.

It can be understood that the utility model discloses a slewing bearing can be yaw bearing, change oar bearing etc. but not only be limited to for yaw bearing, change oar bearing etc..

In addition, the slewing bearing is a special type of bearing, and the sealing member 100 according to an embodiment of the present invention may be used not only for the special type of slewing bearing, but also for other general bearings as long as the bearing includes the stationary ring 200 and the moving ring 300.

The present invention therefore also provides a bearing comprising a seal member 100.

Referring to fig. 3 to 6, the sealing member 100 may be disposed in various ways, and in some alternative embodiments, the sealing member 100 includes a first magnetic part 110 for being hermetically connected to the stationary ring 200 and a second magnetic part 120 for being hermetically connected to the moving ring 300, wherein the magnetic property of the first magnetic part 110 is stronger than that of the second magnetic part 120.

In the sealing member 100 of the embodiment of the present invention, the sealing member 100 includes a first magnetic part 110 and a second magnetic part 120, wherein the first magnetic part 110 is used for being hermetically connected to the stationary ring 200 of the slewing bearing, and the second magnetic part 120 is used for being hermetically connected to the moving ring 300 of the slewing bearing. The first magnetic part 110 and the second magnetic part 120 have magnetism, so that the first magnetic part 110 and the second magnetic part 120 can be in sealing fit by utilizing magnetism and a slewing bearing. During the use process of the sealing component 100, even if the sealing component 100 deforms, the sealing component 100 can still be in sealing fit with the slewing bearing by utilizing magnetism, so that the sealing performance of the slewing bearing is ensured. The first magnetic part 110 is in sealing fit with the stationary ring 200, so that the first magnetic part 110 and the stationary ring 200 are relatively stationary, the magnetism of the first magnetic part 110 is strong, and the stability of the relative position between the first magnetic part 110 and the stationary ring 200 can be ensured. The second magnetic part 120 and the moving coil 300 are in sealing fit, the second magnetic part 120 and the moving coil 300 have relative movement, the magnetism at the second magnetic part 120 is weak, the sealing performance between the second magnetic part 120 and the moving coil 300 is ensured, and meanwhile, the relative movement between the second magnetic part 120 and the moving coil 300 can not be influenced. Therefore, the utility model discloses sealing member 100 not only can improve slewing bearing's sealing performance, prolongs sealing member 100's life, and does not influence the normal work of static circle 200 and movable coil 300 in the slewing bearing.

There are various arrangements for providing magnetism at the first magnetic part 110 and the second magnetic part 120, in some alternative embodiments, as shown in fig. 5, the first magnetic part 110 and the second magnetic part 120 both contain magnetic particles 130, that is, the first magnetic part 110 and the second magnetic part 120 are both made of a material containing the magnetic particles 130, and after the first magnetic part 110 and the second magnetic part 120 are manufactured and molded, the first magnetic part 110 and the second magnetic part 120 are magnetized to make the first magnetic part 110 and the second magnetic part 120 have magnetism.

In these alternative embodiments, the first magnetic part 110 has a magnetic property stronger than that of the second magnetic part 120, for example, the number of the magnetic particles 130 in the first magnetic part 110 is greater than that of the magnetic particles 130 in the second magnetic part 120; alternatively, the first magnetic part 110 may be magnetized strongly, and the second magnetic part 120 may be magnetized weakly, so long as the magnetism of the first magnetic part 110 is stronger than that of the second magnetic part 120.

In other alternative embodiments, as shown in fig. 6, the first magnetic part 110 includes a body 111 and a magnetic patch 112 disposed on the body 111, and the magnetic patch 112 has magnetism, so that the first magnetic part 110 and the second magnetic part 120 can be hermetically connected through magnetic attraction and a pivoting support.

There are various methods for disposing the magnetic patch 112 on the body 111, for example, the magnetic patch 112 is attached to the surface of the body 111; or the body 111 is provided with an accommodating space, and the magnetic patch 112 is located in the accommodating space; further alternatively, the body 111 is provided with a receiving groove, and the magnetic patch 112 is disposed in the receiving groove.

In these alternative embodiments, the first magnetic part 110 includes a body 111 and a magnetic patch 112, the body 111 may not have magnetism, and the body 111 and the stationary ring 200 are hermetically connected by the magnetic patch 112. Meanwhile, since the first magnetic part 110 is provided with the magnetic patch 112, the second magnetic part 120 is also within the magnetic field force range of the magnetic patch 112, and the second magnetic part 120 can be hermetically matched with the moving coil 300 through the magnetic attraction force. And because the magnetic patch 112 is disposed at the first magnetic portion 110, and the magnetic patch 112 is far away from the second magnetic portion 120, the magnetic attraction at the first magnetic portion 110 is greater than the magnetic attraction at the second magnetic portion, and the magnetic attraction at the second magnetic portion 120 is weaker, so that the relative movement between the second magnetic portion 120 and the moving coil 300 is not affected.

Of course, the magnetic patch 112 may be attached to the surface of the second magnetic part 120, and the magnetism of the magnetic patch 112 attached to the surface of the second magnetic part 120 is smaller than that of the magnetic patch 112 attached to the surface of the first magnetic part 120.

Therefore, in these alternative embodiments, the first magnetic part 110 has a body 111 and a magnetic patch 112 disposed on the surface of the body 111, and the magnetic patch 112 has magnetism, so that the first magnetic part 110 and the second magnetic part 120 can be hermetically connected by a magnetic attraction force pivoting support, and the magnetic attraction force at the first magnetic part is greater than the magnetic attraction force at the second magnetic part 120.

The sealing member 100 may be disposed in various ways on the stationary ring 200, for example, the stationary ring 200 may further include an insertion groove 210 therein, so that at least a portion of the first magnetic part 110 can be inserted into the insertion groove 210, the contact area between the stationary ring 200 and the first magnetic part 110 is increased, and the stability of the relative position between the stationary ring 200 and the first magnetic part 110 is improved.

In some alternative embodiments, the first magnetic part 110 includes: a connection portion 111a connected to the second magnetic portion 120 and formed to extend in a first direction (X direction in fig. 3); a plug portion 111b connected to the connection portion 111a and formed by extending the connection portion 111a in a second direction (Y direction in fig. 3), the second direction intersecting the first direction; the magnetic patch 112 is disposed on the connection portion 111 a.

In these alternative embodiments, the first magnetic part 110 includes a connection part 111a for connecting the second magnetic part 120 and a mating part 111b for mating with the mating slot 210, and the magnetic patch 112 is disposed on the connection part 111a, without affecting the mating between the mating part 111b and the mating slot 210, so that the mating between the mating part 111b and the mating slot 210 is tighter.

The magnetic patch 112 is disposed on the outer surface of the connecting portion 111a in various ways, and preferably, the magnetic patch 112 is attached to a side of the connecting portion 111a away from the inserting portion 111 b. The inserting portion 111b is located between the magnetic patch 112 and the stationary ring 200, and the magnetic force generated by the magnetic patch 112 can provide an acting force towards the stationary ring 200 to the inserting portion 111b, so as to further ensure the matching tightness between the inserting portion 111b and the inserting groove 210, and ensure the stability of the relative position between the first magnetic portion 110 and the stationary ring 200.

Alternatively, the accommodating space is provided in the connecting portion 111a, and the magnetic patch 112 is located in the accommodating space. The magnetic patch 112 disposed in the accommodating space makes the connecting portion 111a have magnetism, and provides magnetic attraction force to the insertion portion 111, thereby ensuring stability of a relative position between the first magnetic portion 110 and the stationary ring 200.

Further, the connection portion 111a has a free end far away from the second magnetic portion 120, and the magnetic patch 112 is disposed near the free end, so as to prevent the magnetic patch 112 from being closer to the second magnetic portion 120, and enable the second magnetic portion 120 to have a larger magnetic attraction force, thereby affecting the relative movement between the second magnetic portion 120 and the moving coil 300.

The size of the magnetic patch 112 is not limited, and preferably, the magnetic patch 112 is formed by extending a free end along a first direction (X direction in fig. 3), and in the first direction (X direction in fig. 3), the magnetic patch 112 extends at least to a side of the insertion part 111b facing the first magnetic part 110.

In these alternative embodiments, the magnetic patch 112 extends at least to a side of the insertion portion 111b facing the first magnetic portion 110, that is, the magnetic patch 112 is disposed to cover at least the insertion portion 111b in the second direction, so that the insertion portion 111b is completely located between the magnetic patch 112 and the stationary ring 200, and each part of the insertion portion 111b can receive magnetic attraction force to be tightly fitted with the insertion slot 210, thereby further improving the stability of the relative position between the stationary ring 200 and the first magnetic portion 110.

Generally, the stationary ring 200 and the moving ring 300 each have a circular outer contour, the sealing member 100 is annular as a whole, the first magnetic part 110 and the second magnetic part 120 are annular, and the body 111 of the first magnetic part 110 is also annular. In this case, the magnetic patch 112 may be disposed in various ways, for example, the magnetic patch 112 is matched with the body 111 in shape, and the magnetic patch 112 is also in a ring shape. Alternatively, the magnetic patches 112 are multiple, and the multiple magnetic patches 112 are distributed at intervals along the circumferential direction of the body 111. It is enough to guarantee that body 111 can utilize magnetic attraction and stationary ring 200 to seal and cooperate everywhere.

The extending thickness of the magnetic patch 112 in the second direction (Y direction in fig. 3) is not limited, and it is preferable that the thickness of the magnetic patch 112 is greater than or equal to 0.5mm to prevent the magnetic patch 112 from being too thin to cause insufficient magnetism, which affects the sealing performance of the sealing member 100.

In other alternative embodiments, the thickness of the magnetic patch 112 is less than or equal to 10mm, or the thickness of the magnetic patch 112 is less than or equal to the thickness of the free end, so as to prevent the magnetic patch 112 from being too thick and causing the seal member 100 to be oversized, and prevent the magnetism from being too strong to affect the relative movement between the second magnetic part 120 and the moving coil 300.

The material of the magnetic patch 112 is not limited herein, as long as the magnetic patch 112 has magnetism. For example, the magnetic patch 112 is made of a magnet, or the magnetic patch 112 is made of a material having magnetic particles 130, and the magnetic patch 112 is magnetized after being molded to make the magnetic patch 112 magnetic.

In addition, after the sealing component 100 of the present invention adopts magnetic sealing, the sealing component 100 can be made of non-metal materials such as plastic, nylon, leather, fabric, long and short fibers, wood, etc. instead of rubber materials; the magnetic setting is not limited to the magnetic particles being embedded or the magnetic patch being attached to the surface, and may be a magnetic manufacturing process such as caulking, sewing, extruding, or coating.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. For example, the algorithms described in the specific embodiments may be modified without departing from the basic spirit of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A seal member (100) for a slewing bearing comprising a stationary ring (200) and a moving ring (300) that are relatively movable, characterized in that the seal member (100) comprises a first magnetic part (110) for sealing connection with the stationary ring (200) and a second magnetic part (120) for sealing connection with the moving ring (300), wherein the magnetic properties at the first magnetic part (110) are stronger than the magnetic properties at the second magnetic part (120).

2. The sealing component (100) of claim 1, wherein the first magnetic part (110) and the second magnetic part (120) each contain magnetic particles (130) therein.

3. The sealing component (100) of claim 1, wherein the first magnetic part (110) comprises a body (111) and a magnetic patch (112) disposed on the body (111).

4. The sealing component (100) of claim 3, wherein the body (111) comprises:

a connecting part (111a) connected to the second magnetic part (120) and formed to extend in a first direction;

the plug-in part (111b) is connected to the connecting part (111a) and is formed by the connecting part (111a) in an extending mode along a second direction, and the second direction is intersected with the first direction;

wherein the magnetic patch (112) is provided to the connecting portion (111 a).

5. The seal component (100) of claim 4,

the magnetic patch (112) is attached to one side of the connecting part (111a) which is away from the inserting part (111 b);

or, an accommodating space is formed in the connecting part, and the magnetic patch is located in the accommodating space.

6. The sealing component (100) of claim 5, wherein the connecting portion (111a) has a free end distal from the first magnetic portion (110);

the magnetic patch (112) is disposed proximate to the free end;

or, the magnetic patch (112) is formed by extending the free end along the first direction, and in the first direction, the magnetic patch (112) extends at least to one side of the insertion part (111b) facing the first magnetic part (110).

7. The sealing component (100) according to claim 3, characterized in that the body (111) is annular;

the magnetic patch (112) is annular and is matched with the body (111) in shape;

or, the magnetic patches (112) are multiple, and the multiple magnetic patches (112) are distributed at intervals along the circumferential direction of the body (111).

8. The seal component (100) of claim 4,

the thickness of the magnetic patch (112) is greater than or equal to 0.5 mm;

the thickness of the magnetic patch (112) is less than or equal to 10mm, or the connecting part (111a) has a free end far away from the first magnetic part (110), and the thickness of the magnetic patch (112) is less than or equal to the thickness of the free end.

9. A slewing bearing, comprising: a stationary ring (200), a moving ring (300) and a sealing member (100) according to any of claims 1 to 8, said first magnetic part (110) being sealingly connected to said stationary ring (200), said second magnetic part (120) being sealingly connected to said moving ring (300) and being movably arranged relative to said moving ring (300).

10. A bearing, comprising a sealing component (100) according to any one of claims 1 to 8.