CN111637156A - bearing - Google Patents

Abstract

An embodiment of the present invention provides a bearing, comprising: an outer ring with a lubricating grease injection port, the lubricating grease injection port being communicated with a sealing cavity of a first end of a rolling body of the bearing; a first sealing ring, One of the inner ring and the outer ring is fixed to the bearing, and there is a gap between the other of the inner ring and the outer ring, and the first sealing ring is opened There are openings that communicate with the inner and outer sides of the first sealing ring, and the openings communicate with the sealing cavity of the second end of the rolling body; the sealing member is connected to the other of the inner ring and the outer ring. A fixed connection seal or a contact seal is formed therebetween, and is matched with the first sealing ring to seal the opening when the pressure of the lubricating grease in the sealing cavity is lower than a predetermined pressure. The bearing provided by the embodiment of the present invention can improve the convenience of replacing the bearing lubricating grease.

Description

bearing

technical field

Embodiments of the present invention relate to the field of mechanical equipment, and in particular, to a bearing.

Background technique

As an important component in mechanical equipment, bearings are widely used in various fields to support rotating parts, reduce friction and improve rotation accuracy.

Bearings will be lost during use, so maintenance and overhaul is required after a period of use. For example, the axle box bearings installed in the axle box of the bogie need to be removed after a period of use, and then The bearing races and rollers are polished to reduce the coefficient of friction between them, and new grease is replaced, and finally reassembled and installed.

The above maintenance process consumes a lot of time and labor costs. In order to realize the identification of early faults, a monitoring system is used, which can reduce the maintenance and repair for fault identification, but the replacement of lubricating grease still needs to be realized by disassembly and assembly. .

Therefore, how to improve the convenience of bearing lubricating grease replacement has become an urgent technical problem to be solved.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a bearing assembly and a bearing thereof, so as to improve the convenience of bearing lubricating grease replacement.

To solve the above problem, an embodiment of the present invention provides a bearing, including:

The outer ring is provided with a lubricating grease injection port, and the lubricating grease injection port is communicated with the sealing cavity of the first end of the rolling element of the bearing;

a first sealing ring fixed to one of the inner ring and the outer ring of the bearing and having a gap with the other of the inner ring and the outer ring, the The first sealing ring is provided with an opening communicating with the inner and outer sides of the first sealing ring, and the opening is communicated with the sealing cavity of the second end of the rolling body;

The sealing member forms a fixed connection seal or a contact seal with the other of the inner ring and the outer ring, and cooperates with the first sealing ring, and the lubricating grease in the sealing cavity When the pressure is less than the predetermined pressure, the opening is sealed.

Optionally, the first sealing ring includes:

a fixing part, fixed to one of the inner ring and the outer ring;

The opening part is fixedly connected with the fixing part and extends to the other of the inner ring and the outer ring, and the opening is opened in the opening part.

Optionally, the opening includes:

a first opening part, which is fixedly connected with the fixing part, and is provided with a first opening extending along a first direction, and the first direction is one of the radial direction or the axial direction of the bearing;

The second opening is fixedly connected with the first opening, and the extending direction of the second opening intersects with the extending direction of the first opening, and the second opening is provided with extending along the second direction. the second opening of the bearing, the second direction is the other of the radial direction or the axial direction of the bearing.

Optionally, the number of the first openings is at least 2, each of the first openings is evenly distributed along the circumferential direction of the first opening portion, the number of the second openings is at least 2, and each of the The second openings are evenly distributed along the circumferential direction of the second opening portion.

Optionally, the sealing member is a second sealing ring, comprising:

a fixed sealing portion fixed to the other of the inner ring and the outer ring;

The opening sealing part is fixedly connected to the fixed sealing part, has a shape matching the opening part, forms a gap seal with the opening part, and the pressure of the lubricating grease in the sealing cavity of the bearing is less than the predetermined Under pressure, the opening is sealed, and the distance between the opening sealing portion and the rolling elements of the bearing is greater than the distance between the opening portion and the rolling elements.

Optionally, the sealing member includes:

an elastic contact sealing part, fixed on the first sealing ring, and abutting against the other of the inner ring and the outer ring;

The sealing part is elastically blocked, fixed on the first sealing ring, and when the pressure of the lubricating grease in the sealing cavity of the bearing is lower than the predetermined pressure, the opening is sealed.

Optionally, the surface of the fixing portion exposed in the sealing cavity is a tapered surface, and the diameter of the fixing portion gradually decreases along the bearing axis direction from the outside of the bearing to the inside of the bearing.

Optionally, also include:

The lubricating grease distributor is annular as a whole, is sleeved between the inner ring and the outer ring, and is fixed to the outer ring, and is provided with a lubricating grease distribution cavity, and a lubricating oil distribution cavity communicated with the lubricating grease distribution cavity. A grease input port and a lubricating grease output port, the lubricating grease input port is communicated with the lubricating grease injection port of the outer ring, and the lubricating grease output port is communicated with the component gap in the sealing cavity.

Optionally, the lubricating grease distributor includes:

a first dispenser section;

The second distributor part is arranged opposite to the first distributor part, and the two enclose the lubricating oil distribution cavity.

Optionally, the grease outlet includes:

a first lubricating grease output port, communicated with the component gap between the outer ring and the cage of the bearing;

The second lubricating grease output port communicates with the component gap between the inner ring and the cage.

Compared with the prior art, the technical solution of the present invention has the following advantages:

The bearing provided by the embodiment of the present invention is provided with a first sealing ring with an opening, and the opening is connected to the inner and outer sides of the first sealing ring. At the same time, a sealing structure is also provided, which cooperates with the first sealing ring and is in the sealing cavity. When the pressure of the lubricating grease in the body is small, the opening is sealed, and one of the first sealing ring and the sealing structure is sealed with the inner ring, and the other is sealed with the outer ring, so that the embodiment of the present invention provides The outer ring of the bearing, the first sealing ring, the sealing member and the inner ring of the bearing can realize the bearing sealing, meet the sealing requirements of the bearing during operation, and ensure the normal operation of the bearing; and, because the outer ring has a lubricating oil injection port , the first sealing ring has an opening, and the lubricating grease injection port is communicated with the sealing cavity of the first end of the rolling body of the bearing, and the opening is communicated with the sealing cavity of the second end of the rolling body. When replacing the lubricating grease of the bearing, the new lubricating grease is injected through the lubricating grease injection port. With the injection of the new lubricating grease, the pressure in the sealing cavity rises, pushing the old lubricating grease to move to the second end of the rolling element, When the predetermined pressure is reached, the seal of the opening fails, and the old lubricating grease in the sealing cavity can flow out through the opening, so that the bearing lubricating grease can be replaced. It can be seen that the bearing provided by the embodiment of the present invention, on the basis of ensuring the sealing requirements for the normal operation of the bearing, can realize the replacement of the lubricating grease without disassembling the bearing, which can improve the convenience of the bearing lubricating grease replacement and shorten the bearing maintenance time. And the required manpower, which can reduce the maintenance cost of the bearing.

In an optional solution, in the bearing provided by the embodiment of the present invention, the surface of the fixing portion of the first sealing ring exposed to the sealing cavity is a tapered surface, and the diameter of the fixing portion is in the direction of the bearing axis, It gradually decreases from the outside of the bearing to the inside of the bearing. In this way, in the bearing provided by the embodiment of the present invention, on the one hand, when the lubricating grease is replaced, the old lubricating grease can flow along the conical surface more conveniently and flow out through the opening; on the other hand, when the base oil in the lubricating grease is When it flows to the opening of the first sealing ring under the action of external force, it is easier to re-enter the raceway of the bearing rolling element along the tapered surface, so that the lubrication effect of the bearing can be improved on the basis of further facilitating the replacement of lubricating grease.

In an optional solution, the bearing provided by the embodiment of the present invention further includes: a lubricating grease distributor with an annular shape as a whole, sleeved between the inner ring and the outer ring, fixed on the outer ring, and opened There is a lubricating grease distribution chamber, a lubricating grease input port and a lubricating grease output port communicated with the lubricating grease distribution chamber, the lubricating grease input port is communicated with the lubricating grease injection port of the outer ring, and the lubricating grease output port Clearly communicated with components in the sealed cavity. Therefore, when new lubricating grease is injected through the bearing provided by the embodiment of the present invention, the new lubricating grease enters the lubricating grease input port through the lubricating grease injection port of the outer ring, and further enters the lubricating grease distribution cavity, and then passes through the lubricating grease. The output port enters the component gap in the sealing cavity, so that the lubricating grease can more easily enter the position to be lubricated. In this way, through the setting of the lubricating grease distributor, the advancing path of the new lubricating grease is controlled, so that the new lubricating grease can enter the position to be lubricated more smoothly, and provide more grease for the component gap, which can realize the lubrication Better distribution of grease and improved lubrication.

Description of drawings

1 is a schematic structural diagram of a bearing provided by an embodiment of the present invention;

2 is a schematic structural diagram of a first sealing ring of a bearing provided by an embodiment of the present invention;

3 is a schematic three-dimensional structural diagram of a first sealing ring of a bearing provided by an embodiment of the present invention;

4 is a schematic structural diagram of a sealing structure of a bearing provided by an embodiment of the present invention;

5 is a schematic structural diagram of a lubricating grease distributor for a bearing provided by an embodiment of the present invention;

FIG. 6 is a partial structural schematic diagram of a lubricating grease distributor for a bearing provided by an embodiment of the present invention.

Detailed ways

In the prior art, the convenience of replacing the lubricating oil of the bearing is relatively low.

In order to improve the convenience of bearing lubricating grease replacement, an embodiment of the present invention provides a bearing, the outer ring is provided with a lubricating grease injection port, and the lubricating grease injection port is sealed with the first end of the rolling body of the bearing. cavity connection;

a first sealing ring fixed to one of the inner ring and the outer ring of the bearing and having a gap with the other of the inner ring and the outer ring, the The first sealing ring is provided with an opening communicating with the inner and outer sides of the first sealing ring, and the opening is communicated with the sealing cavity of the second end of the rolling body;

The sealing member forms a fixed connection seal or a contact seal with the other of the inner ring and the outer ring, and cooperates with the first sealing ring, and the lubricating grease in the sealing cavity When the pressure is less than the predetermined pressure, the opening is sealed.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1 and FIG. 2 , FIG. 1 is a schematic structural diagram of a bearing provided by an embodiment of the present invention; FIG. 2 is a structural schematic diagram of a first sealing ring of the bearing provided by an embodiment of the present invention.

As shown in the figure, the bearing provided by the embodiment of the present invention includes:

The outer ring 1 is provided with a lubricating grease injection port 11, and the lubricating grease injection port 11 communicates with the sealing cavity of the first end of the rolling element 5 of the bearing;

The first sealing ring 2 is fixed to the inner ring 6 of the bearing and has a gap with the outer ring 1. The first sealing ring 2 is provided with an opening 23 connecting the inner and outer sides of the first sealing ring, The opening 23 communicates with the sealing cavity of the second end of the rolling body 5;

The sealing member 3 forms a fixed connection seal with the outer ring 1 and cooperates with the first sealing ring 2 to seal the opening 23 when the pressure of the lubricating grease in the sealing cavity is lower than a predetermined pressure.

It can be understood that, in other embodiments, the first sealing ring can also be fixed to the outer ring of the bearing, and there is a certain gap between the first sealing ring and the inner ring, and the sealing member forms a fixed connection seal with the inner ring. In addition, The sealing structure can also form a contact seal with the inner ring. Of course, when the first sealing ring is fixed to the inner ring of the bearing, the sealing member can also form a contact seal with the outer ring.

It should be noted that the sealing cavity described in this article is the sealing space enclosed by various components of the bearing, that is, the sealing space enclosed by the outer ring 1, the inner ring 6 and the first sealing ring 2, and the rolling elements 5 are located in the sealing cavity in vivo.

The lubricating grease injection port 11 described herein communicates with the sealing cavity at the first end of the rolling body 5 of the bearing, and the opening 23 communicates with the sealing cavity at the second end of the rolling body 5, which means that the lubricating grease injection port 11 and the opening 23 are respectively connected with the sealing cavity at both ends of the rolling element 5. For example, as shown in the figure, the lubricating grease injection port 11 is in communication with the sealing cavity at the smaller diameter end of the rolling element 5, and the opening 23 is connected with the diameter of the rolling element 5. The sealing cavity at the larger end is connected, so that when new lubricating grease is injected into the sealing cavity, the new lubricating grease will travel from one end of the rolling element 5 through the raceway of the rolling element 5 to the other end of the rolling element 5, and finally reach the opening 23, and in the process achieve the extrusion of the old grease.

Specifically, when the bearing is a single-row roller bearing, the opening and the lubricating grease injection port can be opened at both ends of the bearing respectively; when the bearing is a double-row roller bearing, as shown in Figure 1, the lubricating grease injection port can be opened 11 is opened between the two rows of rollers of the outer ring 1, and openings 23 are respectively opened at both ends of the bearing.

Of course, as shown in FIG. 1 , when the bearing is a double-row roller bearing, the inner ring 6 may have a split structure and be connected by a connecting sleeve 9 arranged inside.

Specifically, the number of lubricating grease injection ports 11 may be at least 2, for example: 3, and each lubricating grease injection port 11 is evenly arranged along the circumferential direction of the outer ring 1, so as to increase the injection speed of new lubricating grease and make the The new lubrication grease is more evenly distributed in the circumferential direction.

The lubricating grease injection port 11 can be connected with a lubricating grease pump (not shown in the figure) and a lubricating grease container (not shown in the figure), so as to use the lubricating grease pump to input the lubricating grease in the lubricating grease container to the sealing cavity.

Of course, the bearing is usually installed in the bearing seat, for this purpose, a through hole may be opened on the bearing seat at a position corresponding to the lubricating grease injection port 11 to realize the injection of the lubricating grease.

In order to ensure the sealing between the bearing outer ring 1 and the bearing seat, as shown in FIG. 1 , an O-ring 7 can be installed on the outside of the bearing outer ring. O-rings 7 are respectively provided at both ends to seal the gap between the outer ring 1 and the bearing seat. Further, in order to facilitate the setting of the O-ring 7, a ring groove may be opened on the outer ring 1, and the O-ring 7 is arranged in the ring groove.

When the pressure of the lubricating grease in the sealing cavity is less than the predetermined pressure, the sealing of the opening 23 refers to that, when the pressure in the sealing cavity is small, although the opening 23 exists, it will not affect the sealing of the bearing and will not Due to the presence of the opening 23, the grease in the bearing leaks, and the presence of the opening 23 will not allow external debris to enter the sealing space of the bearing. When the pressure reaches a predetermined pressure, the lubricating grease in the bearing can pass through the opening. 23 outflow.

Specifically, the shape of the opening 23 may be a circular hole, an annular groove or an irregular shape, etc., as long as the outflow of lubricating grease can be achieved.

By setting the shape of the opening 23 as an annular groove, the area of the opening 23 can be increased on the basis of ensuring the sealing requirements, and the processing is convenient.

The material of the first sealing ring 2 is not limited. It can be made of plastic to reduce processing difficulty and cost, or can be made of steel to improve the strength of the first sealing ring 2 .

In this way, the bearing provided by the embodiment of the present invention is provided with a first sealing ring with an opening, and the opening is connected to the inner and outer sides of the first sealing ring, and a sealing structure is also provided at the same time, which cooperates with the first sealing ring and When the pressure of the lubricating grease in the sealing cavity is small, the opening is sealed, and one of the first sealing ring and the sealing structure is sealed with the inner ring, and the other is sealed with the outer ring, thus the embodiment of the present invention The bearing outer ring, the first sealing ring, the sealing member and the bearing inner ring of the provided bearing can realize the bearing sealing, meet the sealing requirements of the bearing during operation, and ensure the normal operation of the bearing; and, since the outer ring is provided with lubricating grease The injection port, the first sealing ring has an opening, and the lubricating grease injection port is communicated with the sealing cavity of the first end of the rolling body of the bearing, and the opening is communicated with the sealing cavity of the second end of the rolling body. When it is necessary to replace the lubricating grease of the bearing, inject new lubricating grease through the lubricating grease injection port. With the injection of new lubricating grease, the pressure in the sealing cavity rises and pushes the old lubricating grease to the second end of the rolling element. Moving, when the predetermined pressure is reached, the seal of the opening fails, and the old lubricating grease in the sealing cavity can flow out through the opening, so that the bearing lubricating grease can be replaced.

It can be seen that the bearing provided by the embodiment of the present invention, on the basis of ensuring the sealing requirements for the normal operation of the bearing, can realize the replacement of the lubricating grease without disassembling the bearing, which can improve the convenience of the bearing lubricating grease replacement and shorten the bearing maintenance time. And the required manpower, which can reduce the maintenance cost of the bearing.

In a specific embodiment, in order to facilitate the installation of the first sealing ring, please refer to FIG. 2 , the first sealing ring 2 of the bearing provided by the embodiment of the present invention may include:

The fixing part 21 is fixed on the inner ring 6;

The opening portion 22 is fixedly connected with the fixing portion 21 and extends to the outer ring 1 , and the opening 23 is opened in the opening portion 22 .

In this way, the fixing part 21 can have a structure more suitable for installation with the inner ring 6, which is convenient for installation on the one hand, and can also improve the stability of installation on the other hand; and the setting of the opening part 22 can better realize the sealing When required, the opening of the opening 23 is facilitated.

Of course, in another specific implementation manner, the fixing part of the first sealing ring can also be fixed to the outer ring, and the opening part is fixedly connected with the fixing part and extends toward the inner ring.

As shown in the figure, in a specific implementation manner, the surface of the fixing portion 21 exposed in the sealing cavity may be a tapered surface, and the diameter of the fixing portion 21 is in the axial direction of the bearing, along the outer direction of the bearing. gradually decreases in the bearing.

In this way, in the bearing provided by the embodiment of the present invention, on the one hand, when the lubricating grease is replaced, the old lubricating grease can flow along the conical surface more conveniently and flow out through the opening 23; on the other hand, when the foundation in the lubricating grease is When the oil flows to the opening portion 22 of the first seal ring under the action of external force, it is easier to re-enter the raceway of the bearing rolling element along the tapered surface, so that the lubrication effect of the bearing can be improved on the basis of further facilitating the replacement of lubricating grease.

Further, in order to improve the replacement speed of lubricating grease on the basis of ensuring the bearing sealing requirements, as shown in FIG. 2 , the opening portion 22 of the first sealing ring 2 of the bearing provided by the embodiment of the present invention includes:

The first opening portion 221 is fixedly connected to the fixing portion 21, and is provided with a first opening 231 extending along a first direction, the first direction being the radial direction of the bearing;

The second opening portion 222 is fixedly connected with the first opening portion 221 , and the extending direction of the second opening portion 222 intersects the extending direction of the first opening portion 221 . The second opening 232 extends in two directions, and the second direction is the axial direction of the bearing.

It can be understood that the extending direction of the first opening portion 221 refers to the direction with a larger size in the cross-sectional view of the first opening portion 221 shown in FIG. 2 , and the extending direction of the second opening portion 222 refers to the direction shown in FIG. The cross-sectional view of the second opening portion 222 shown is in the direction of the larger size.

In this way, the first opening portion 221 and the second opening portion 222 are provided on the first sealing ring 2 , and the extending directions of the two intersect, so that the structure of the first sealing ring 2 is relatively complicated, and can form a labyrinth seal with the sealing member 3 At the same time, a first opening 231 is opened on the first opening part 221, and a second opening 232 is opened on the second opening part 222, which increases the number of openings 23 and can improve the speed of grease replacement.

Specifically, for the convenience of processing, as shown in the figures, the extending direction of the first opening portion 221 and the extending direction of the second opening portion 222 may be perpendicular to each other.

Of course, in another specific implementation manner, the extending direction of the first opening may be perpendicular to the axial direction of the bearing, then the first extending direction of the first opening is the axial direction of the bearing, and the extending direction of the second opening may be Parallel to the axial direction of the bearing, the second direction extending in the second direction is the radial direction of the bearing.

Please refer to FIG. 3 , which is a schematic three-dimensional structural diagram of a first sealing ring of a bearing provided by an embodiment of the present invention.

In order to improve the replacement speed of lubricating grease, in a specific implementation manner, the number of the first openings 231 of the first sealing ring 2 of the bearing provided in the embodiment of the present invention is at least two, and each of the first openings 231 The number of the second openings 232 is at least two, and the second openings 232 are evenly distributed along the circumferential direction of the second openings 232 .

Of course, in order to conveniently form a sealing structure with the first sealing ring 2 , please refer to FIG. 4 in conjunction with FIG. 1 , which is a schematic structural diagram of the sealing structure of the bearing provided by the embodiment of the present invention.

As shown in the figure, in a specific implementation manner, the sealing member 3 of the bearing provided by the present invention may be a second sealing ring. In this embodiment, the second sealing ring includes:

The fixed sealing part 31 is fixed on the outer ring 1;

The opening seal part 32 is fixedly connected to the fixed seal part 31, has a shape matching the opening part 22, and forms a gap seal with the opening part 22, and the pressure of the lubricating grease in the sealing cavity of the bearing When the pressure is lower than the predetermined pressure, the opening 23 is sealed, and the distance between the opening sealing portion 32 and the rolling elements 5 of the bearing is greater than the distance between the opening portion 22 and the rolling elements 5 .

Wherein, the distance between the opening seal portion 32 and the rolling elements 5 of the bearing is greater than the distance between the opening portion 22 and the rolling elements 5 means that, as shown in FIG. 1 , the opening portion 22 is located in the opening between the sealing portion 32 and the rolling elements 5 .

Of course, it is easy to understand that, in another specific embodiment, when the first sealing ring 2 is fixed to the outer ring 1 , the second sealing ring is fixed to the inner ring 6 .

The material of the second sealing ring is not limited. It can be made of plastic to reduce processing difficulty and cost, or can be made of steel to improve strength.

The setting of the fixed sealing portion 31 enables the second sealing ring to be conveniently and firmly fixed to the outer ring 1, and forms a fixed seal with the outer ring 1; and the setting of the opening sealing portion 32 enables the second sealing ring to be connected to the first sealing ring. A gap seal is formed between the openings 22 of 2 to ensure that the pressure of the lubricating grease in the sealing cavity is less than the predetermined pressure, and the opening 23 is sealed.

In another specific implementation manner, the sealing member of the bearing provided by the embodiment of the present invention may further include: an elastic contact sealing portion fixed to the first sealing ring and abutting against the inner ring and the the other of the two outer rings; the sealing part is elastically blocked, fixed on the first sealing ring, and when the pressure of the lubricating grease in the sealing cavity of the bearing is less than the predetermined pressure, the opening is sealed twenty three.

Specifically, the elastic contact sealing portion may be a sealing lip, one end of which is fixed to the first sealing ring. When the first sealing ring is fixed to the inner ring, the other end of the elastic contact sealing portion abuts against the outer ring and forms contact with the outer ring Sealing; when the first sealing ring is fixed on the outer ring, the other end of the elastic contact sealing part abuts on the inner ring, forming a contact seal with the inner ring.

The elastic blocking sealing part is also fixed on the first sealing ring, specifically a rubber sheet, which is fixed on the first sealing ring and blocks the opening, for example: one end is fixed on the first sealing ring, and the other end is a free end, which can move When the pressure of the sealing cavity is small, the opening can be sealed, and when the pressure of the sealing cavity reaches a predetermined pressure, the rubber sheet can open the opening.

In this way, the sealing member can meet the sealing requirements of the bearing through the cooperation of the elastic contact sealing part and the elastic blocking sealing part with the first sealing ring respectively, and can achieve the sealing requirements of the opening and the overflow of the grease through the elastic blocking sealing part.

In another specific implementation, in order to improve the distribution effect of the newly injected lubricating grease, the bearing provided by the embodiment of the present invention may further include a lubricating grease distributor. Please refer to FIG. 5 in conjunction with FIG. 1 , which is an embodiment of the present invention. A schematic diagram of the structure of the lubricating oil distributor of the bearing provided by the example.

As shown in the figure, the bearing provided by the embodiment of the present invention further includes:

The lubricating grease distributor 8 is annular as a whole, is sleeved between the inner ring 1 and the outer ring 6, and is fixed to the outer ring 6, and is provided with a lubricating grease distribution cavity 83, and is connected with the lubricating grease. The distribution chamber 83 communicates with the lubricating grease input port 81 and the lubricating grease output port 82. The lubricating grease input port 81 is communicated with the lubricating grease injection port 11 of the outer ring 1, and the lubricating grease output port 82 is connected with the lubricating grease in the sealing cavity. Parts are connected through gaps.

Specifically, the component clearance includes the clearance between the outer ring 1 and the cage 4 of the bearing, and the clearance between the inner ring 6 and the cage 4 .

Therefore, when new lubricating grease is injected through the bearing provided by the embodiment of the present invention, the new lubricating grease enters the lubricating grease input port 81 through the lubricating grease injection port 11 of the outer ring 1, and further enters the lubricating grease distribution cavity 83, Then, through the lubricating grease output port 82, the lubricating grease enters the component gap in the sealing cavity, so that the lubricating grease can more easily enter the position to be lubricated.

In this way, through the setting of the lubricating grease distributor 8, the advancing path of the new lubricating grease is controlled, so that the new lubricating grease enters the position to be lubricated more smoothly, and more grease is provided for the component gap, which can realize the Better distribution of grease and improved lubrication.

In order to facilitate the processing of the lubricating grease distributor, in a specific implementation manner, the lubricating grease distributor of the bearing provided by the embodiment of the present invention can be divided into two parts, which can include:

a first distributor portion 84;

The second distributor portion 85 is disposed opposite to the first distributor portion 84 , and the two enclose the lubricating grease distribution cavity 83 .

When the bearing is a double row roller bearing, the lubricating grease distributor 8 can be placed between the double row rollers of the bearing, so that the first distributor 84 and the second distributor 85 can have the same structure, such as shown in FIG. 6 . 6 is a partial structural schematic diagram of the lubricating grease distributor of the bearing provided by the embodiment of the present invention; when the bearing is a single-row roller bearing, the lubricating grease distributor can be placed at one end of the bearing, so that the first distributor The structure of the second distributor and the second distributor may be different, for example: the first distributor is a plane, the second distributor has a structure as shown in FIG. 6 , and the second distributor extends to one side of the rolling body.

In this way, the lubricating grease distributor 8 is divided into two parts, the first distributor 84 and the second distributor 85 , which can reduce the processing difficulty of the lubricating grease distributor 8 .

In order to further improve the effect of lubricating grease distribution, in a specific implementation manner, the lubricating grease output port 82 of the bearing lubricating grease distributor 8 provided by the embodiment of the present invention may include:

The first lubricating grease output port 821 communicates with the component gap between the outer ring 1 and the cage 4 of the bearing;

The second lubricating grease output port 822 communicates with the component gap between the inner ring 6 and the cage 4 .

In this way, the lubricating grease injected through the lubricating grease injection port 11 can enter the component gap between the outer ring 1 and the cage 4 and the inner ring 6 and the inner ring 6 through the first lubricating grease output port 821 and the second lubricating grease output port 822 respectively. The component gap between the cages 4 further improves the rationality of the distribution of lubricating grease, so that the new lubricating grease can enter the position to be lubricated more smoothly, providing more grease for the component gap, which can achieve better lubrication of the lubricating grease. distribution and improve lubrication.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the embodiments of the present invention are disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be based on the scope defined by the claims.

Claims (10)

1. A bearing, comprising:

the outer ring is provided with a lubricating grease injection port, and the lubricating grease injection port is communicated with a sealing cavity at the first end of the rolling body of the bearing;

the first sealing ring is fixed on one of the inner ring and the outer ring of the bearing, a gap is reserved between the first sealing ring and the other of the inner ring and the outer ring, the first sealing ring is provided with an opening which is communicated with the inner side and the outer side of the first sealing ring, and the opening is communicated with a sealing cavity at the second end of the rolling body;

and the sealing component forms fixed connection sealing or contact sealing with the other one of the inner ring and the outer ring, is matched with the first sealing ring, and seals the opening when the pressure of the lubricating grease in the sealing cavity is less than a preset pressure.

2. The bearing of claim 1, wherein the first seal ring comprises:

a fixing portion fixed to one of the inner ring and the outer ring;

an opening portion fixedly connected with the fixing portion and extending to the other of the inner ring and the outer ring, wherein the opening portion is opened at the opening portion.

3. The bearing of claim 2, wherein the opening portion comprises:

a first opening portion fixedly connected with the fixing portion and provided with a first opening extending along a first direction, wherein the first direction is one of a radial direction and an axial direction of the bearing;

the second opening part is fixedly connected with the first opening part, the extending direction of the second opening part is intersected with the extending direction of the first opening part, a second opening extending along a second direction is formed in the second opening part, and the second direction is the other one of the radial direction or the axial direction of the bearing.

4. The bearing of claim 2, wherein the number of the first openings is at least 2, the first openings are evenly distributed in a circumferential direction of the first opening portion, the number of the second openings is at least 2, and the second openings are evenly distributed in a circumferential direction of the second opening portion.

5. The bearing of claim 2, wherein the sealing member is a second seal ring comprising:

a fixed seal portion fixed to the other of the inner ring and the outer ring;

the opening sealing part is fixedly connected to the fixed sealing part, has a shape matched with the opening part, forms clearance seal with the opening part, seals the opening when the pressure of lubricating grease of the sealing cavity of the bearing is smaller than the preset pressure, and the distance between the opening sealing part and the rolling body of the bearing is larger than the distance between the opening part and the rolling body.

6. The bearing of claim 1, wherein the sealing member comprises:

an elastic contact seal portion fixed to the first seal ring and abutting against the other of the inner ring and the outer ring;

and the elastic blocking sealing part is fixed on the first sealing ring, and seals the opening when the pressure of the lubricating grease in the sealing cavity of the bearing is less than the preset pressure.

7. The bearing of any one of claims 2-6, wherein the surface of the anchoring portion exposed within the seal cavity is tapered, and the diameter of the anchoring portion decreases in the direction of the bearing axis, outward of the bearing and inward of the bearing.

8. The bearing of any one of claims 1-6, further comprising:

lubricating grease distributor wholly is the annular, and the cover is located the inner circle with between the outer lane, and be fixed in lubricating grease distribution chamber has been seted up to the outer lane, and with lubricating grease input port and the lubricating grease delivery outlet of lubricating grease distribution chamber intercommunication, the lubricating grease input port with the lubricating grease filling opening intercommunication of outer lane, the part clearance intercommunication in lubricating grease delivery outlet and the sealed cavity.

9. The bearing of claim 8, wherein the grease dispenser comprises:

a first distributor portion;

and a second distributor portion disposed opposite to the first distributor portion, and enclosing the grease distribution chamber.

10. The bearing of claim 7, wherein the grease delivery port comprises:

a first grease outlet communicated with a part gap between the outer ring and a retainer of the bearing;

and the second lubricating grease output port is communicated with a part clearance between the inner ring and the retainer.

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