CN111677764A

CN111677764A - High-speed bearing with oil mist channel on outer ring

Info

Publication number: CN111677764A
Application number: CN202010384055.2A
Authority: CN
Inventors: 刘超
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-09-18
Also published as: CN110439927A; CN111677766B; CN111677765A; CN110439927B; CN111677766A

Abstract

The invention discloses a high-speed bearing with an oil mist channel on an outer ring, which comprises an outer ring, an inner ring, balls, a first pressure plate, a second pressure plate and an oil tank, wherein the outer ring is positioned outside the inner ring, the balls are arranged between the inner ring and the outer ring, the first pressure plate and the second pressure plate are arranged at two ends of the outer ring through fasteners, the outer surface of the outer ring is provided with oil mist grooves, two groups of through holes are formed in the first pressure plate and are respectively connected to a central hole of the end surface of the outer ring and the oil mist grooves which are in contact with the first pressure plate, the first pressure plate is connected to the oil tank. The inner ring comprises a ring body and fan blades arranged on the outer surface of the ring body, and the fan blades are uniformly distributed on the circumference. An atomizer is arranged in the oil tank; the fan blade and the ring body are connected in a split mode and locked through the fastening piece, the fan blade comprises a blade, a blade root and a root plate, the blade root is inserted into the outer surface of the ring body in the radial direction, the root plate abuts against the outer surface of the ring body, and the root plate and the ring body are locked through the fastening piece.

Description

High-speed bearing with oil mist channel on outer ring

Technical Field

The invention relates to the field of bearings, in particular to a high-speed bearing with an oil mist channel on an outer ring.

Background

Bearings are used extensively in machines that provide rotational support for a rotating shaft for smooth low resistance rotation. The rotating speed range of the bearing is large, and the rotating speed can reach tens of thousands of revolutions when the bearing is applied to a high-speed occasion.

In the prior art, lubrication of a bearing is generally oil lubrication or grease lubrication, the grease lubrication is limited in application under high-speed working conditions due to problems of resistance, heat and the like, for the oil lubrication, a ball rotating at high speed can expel lubricating oil on a rolling friction surface, if the ball is in a common liquid state, certain resistance can be caused due to liquid tension, the resistance is small, but can also be increased along with the increase of the running speed of the bearing, in addition, the oil film is uneven on the surface of the ball, the rolling vibration can be increased, the vibration of the bearing is aggravated, and the factor is superposed on the vibration factor caused by the play of the bearing.

Traditionally, the interior outer lane of bearing all is the integral type, the ball is when filling in the roll groove, need make its off-centre with the manual stirring of interior outer lane, then fill in the ball from great groove width department, after filling in sufficient quantity's ball, again with ball equidistance distribution dress holder, this kind of mounting means, need make great with the terminal surface hole of outer lane, and the ball quantity that can fill in is limited, because fill in the ball by the gap entirely, along with the ball is filled in to be many, interior outer lane eccentricity is littleer and more, follow-up difficult ball of filling in more, the ball is not completely even on the circumference to the holding power of interior outer lane, the ball quantity is less, the holding power is inhomogeneous more.

When the bearing is installed and used, a corresponding bearing gland or spigot ring and the like are often required to be manufactured for the bearing, so that the bearing is locked and positioned on the shell, and the integration degree is not high.

Disclosure of Invention

The invention aims to provide a high-speed bearing with an outer ring provided with an oil mist channel, which aims to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an outer lane has high-speed bearing of oil mist passageway, including the outer lane, the inner circle, the ball, the outer lane is located outside the inner circle, set up the ball between the interior outer lane, high-speed bearing still includes first pressure disk, second pressure disk and oil tank, first pressure disk and second pressure disk are installed through the fastener in outer lane both ends, the outer lane surface is equipped with the oil mist groove, the oil mist groove extends to another side terminal surface from outer lane side terminal surface, set up two sets of through-holes on the first pressure disk and be connected to outer lane terminal surface centre bore and the oil mist groove rather than contacting respectively, first pressure disk passes through pipe connection to the oil tank, first pressure disk, the second pressure disk sets up on the inner cylinder face adjacent with the.

The bearing inner ring is sleeved on the crankshaft, and the outer ring is arranged on the casing and used for providing rotary support for the crankshaft.

First pressure disk, second pressure disk are installed at the outer lane both ends from both sides respectively to set up the oil blanket on the inner cylinder face towards the inner circle, make ball place space and outside atmosphere keep apart, prevent that outside debris dust from getting into bearing rolling element department. Offer the oil mist groove at the terminal surface and the surface of outer lane, the oil mist groove on ball place space and the outer lane is being connected respectively to first pressure disk, external lubricated oil mist forms the circulation from first pressure disk business turn over, the oil mist fully lubricates the ball and takes away the heat when moving, compare in the liquid form lubricating oil of whole group form, let lubricating oil become the oil mist and flow, the lubricity is better, because the oil mist can collect for liquid after staying the certain time, so need get up the lubricating oil circulation in the bearing inside lubrication space, the loading of circulation power can on the circulation route.

Furthermore, the inner ring comprises a ring body and fan blades arranged on the outer surface of the ring body, and the fan blades are uniformly distributed on the circumference.

The blades arranged on the ring body directly obtain power from a crankshaft to drive gas or gas-liquid mixed state media in the surrounding space to flow and circulate, the shape of the blades is the shape of an ordinary axial flow fan or a steam turbine axial flow blade, and the blades extend to the inner surface close to the outer ring so as to fully work the media on the flow channel. The bearing is preferably made into a double-row bearing, the first bearing has more axial space margin and more structural utilizable, and the second bearing has fully symmetrical radial force to the crankshaft, so that the problems of installation deflection and the like are prevented, and the outer edge of the fan blade touches the inner surface of the outer ring during operation. In addition to the double row bearing form, three or even four rows are possible, but the more complicated the structure, the lower the practicality.

Furthermore, an atomizer is arranged in the oil tank, the oil tank is respectively connected to the first pressure plate through two pipelines, a pipeline leading to the space where the balls are located from the oil tank is connected with the top of the inner surface of the oil tank, and a filter screen is arranged on the pipeline;

the fan blade and the ring body are connected in a split mode and locked through the fastening piece, the fan blade comprises a blade, a blade root and a root plate, the blade root is inserted into the outer surface of the ring body in the radial direction, the root plate abuts against the outer surface of the ring body, and the root plate and the ring body are locked through the fastening piece.

The fan blades on the inner ring suck the oil mist atomized by the atomizer from the oil tank, and the oil mist liquid which is subjected to a lubricating process is discharged back to the oil tank to form circulation, the atomizer fully crushes the lubricating oil in the oil tank into mist and disperses the mist in an upper space in the oil tank, the filter screen filters dust impurities entering the lubricating oil from a structural gap, and the filter screen separates oil mist droplets with larger particle size and only allows the more finely-crushed oil mist to pass through the balls.

Furthermore, the outer ring is of an open split type, and a connecting table used for connecting the two outer rings together is arranged on the outer surface of the outer ring.

Through the split type outer ring, the number of the balls is not limited by the assembling process any more, and the balls as many as possible can be filled in, so that the inner ring and the outer ring of the bearing are uniform in circumference as much as possible on radial supporting force, the balls are filled in rolling grooves of the inner ring in advance during assembly, the balls are supported by a tool to prevent falling off during filling, then the two-petal outer ring is clamped and combined, and the balls are sleeved by hoops and used for locking connecting platforms of the two-petal outer ring together by fasteners.

Furthermore, the section of the blade root is a regular polygon, and the number of threaded holes for fixing a fan blade on the ring body is proportional to the number of polygonal edges of the blade root.

The blade root section is regular polygon, regular polygon corresponds the different installation angle of blade, and convenience of customers adjusts the working capacity of fan blade to fully adapt to the use operating mode, for example regular pentagon has five angles, and the fan blade also has five installation angle, under the same rotational speed, has different lift. Of course, this form of adjustment of the mounting angle is not stepless and is limited in number, it being possible to modify the blade root with a circular section and to machine a sector-shaped oval hole in the root plate for fastening.

Preferably, the top of the oil tank is provided with an oil cup. The oil cup is convenient for adding lubricating oil from the outside, and makes up the lubricating oil lost in the circulation process.

As optimization, the end part of the connecting pipeline of the oil tank and the first pressure plate is provided with a clamping sleeve joint. The cutting ferrule connects and facilitates the pipeline connection.

Preferably, the atomizer is an ultrasonic atomizer. The ultrasonic atomizer has the advantages of small structure, strong atomization capability, atomization in a pure physical mode and no change of the properties of lubricating oil.

As optimization, the outer diameter of the first pressure plate is larger than that of the outer ring, a first sealing ring is arranged on the end face, facing the outer ring, of the first pressure plate, and the inner diameter of the first sealing ring is larger than that of the outer ring; the outer diameter of the second pressure plate is equal to that of the outer ring, and a second sealing ring is arranged on the outer cylindrical surface of the second pressure plate.

First pressure disk directly acts as the bearing gland, need not go the corresponding gland part of design again when using, directly can accomplish the installation of bearing on the machine on the casing of installation department with first pressure disk is fixed, the collection dress ization. First sealing washer, second sealing washer seal up the external passageway of outer lane respectively, undertake the quiet function of sealing, further increase the collection dress degree of this bearing, only need during the use with its suit to the spindle on and push in the casing can.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the lubricating oil is atomized in the oil tank and is connected to the first pressure plate through the pipeline, the oil mist groove for oil mist circulation is formed on the outer ring, the fan blades on the inner ring are used for blowing to form circulation, the oil mist replaces the traditional lubricating oil for lubrication, the lubricating capability is stronger, and the circulating oil mist can effectively take away the friction heat generated by the balls; the split outer ring can eliminate the limitation of the traditional bearing assembly process, and balls are arranged between the inner ring and the outer ring as many as possible, so that the rotary supporting force can be very uniform in the circumferential direction, and when the balls are adjacent, the traditional retainer can be omitted, and the sliding friction between surfaces can be eliminated; the fan blades are arranged on the ring body in a split manner and are adjustable in angle, and proper oil mist circulating power can be selected according to working conditions; two pressure disks seal the bearing main part from both sides respectively, and the installation of whole integrated form prevents that the improper installation from damaging the ball.

Drawings

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic diagram of the operation of the present invention;

FIG. 3 is a perspective view of the outer ring, first platen, and second platen of the present invention;

FIG. 4 is a flow chart of the external tubing system of the present invention;

FIG. 5 is view A of FIG. 1;

FIG. 6 is view B-B of FIG. 5;

fig. 7 is view C of fig. 1.

In the figure: 1-outer ring, 11-oil mist groove, 12-connecting table, 2-inner ring, 21-ring body, 22-fan blade, 221-blade root, 222-root plate, 3-ball, 41-first pressure plate, 42-second pressure plate, 51-cutting sleeve joint, 52-oil tank, 53-atomizer, 54-oil cup, 55-filter screen, 61-first sealing ring, 62-second sealing ring, 91-crankshaft and 92-casing.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, a high-speed bearing with an oil mist channel on an outer ring comprises an outer ring 1, an inner ring 2 and balls 3, wherein the outer ring 1 is positioned outside the inner ring 2, the balls 3 are arranged between the inner ring and the outer ring, the high-speed bearing further comprises a first pressure plate 41, a second pressure plate 42 and an oil tank 52, a first pressure plate 41 and a second pressure plate 42 are mounted at two ends of the outer ring 1 through fasteners, an oil mist groove 11 is formed in the outer surface of the outer ring 1, the oil mist groove 11 extends from one side end surface of the outer ring 1 to the other side end surface, two groups of through holes are formed in the first pressure plate 41 and are respectively connected to a center hole of the end surface of the outer ring 1 and the oil mist groove 11 which are in contact with the first pressure plate 41, the first pressure plate 41 is connected to.

The bearing inner ring 2 is sleeved on the crankshaft 91, and the outer ring 1 is installed on the casing 92 and used for providing rotary support for the crankshaft 91.

The first pressure plate 41 and the second pressure plate 42 are respectively installed at two ends of the outer ring 1 from two sides, and oil seals are arranged on the inner cylindrical surface facing the inner ring, so that the space where the ball 3 is located is isolated from the external atmosphere, and external sundry dust is prevented from entering the rolling bodies of the bearing. The end face and the outer surface of the outer ring are provided with oil mist grooves 11, as shown in fig. 2 and 3, the first pressure plate 41 is respectively connected with the space where the balls 3 are located and the oil mist grooves 11 on the outer ring 1, the external lubricating oil mist enters and exits from the first pressure plate 41 to form circulation, the oil mist fully lubricates the balls 3 and takes away heat in operation, compared with the liquid lubricating oil in a whole-ball form, the lubricating oil is changed into oil mist and flows, the lubricating property is better, the oil mist can be collected into liquid after staying for a certain time, so that the lubricating oil in the lubricating space inside the bearing needs to be circulated, and the circulating power is loaded on a circulating path.

As shown in fig. 1, the inner ring 2 includes a ring body 21 and blades 22 disposed on the outer surface of the ring body 21, and the blades 22 are circumferentially and uniformly distributed.

The fan blades 22 arranged on the ring body 21 directly obtain power from the crankshaft 91, and blow gas or gas-liquid mixed state media in the surrounding space to form flowing circulation in fig. 2, the shape of the fan blades 22 is the shape of an ordinary axial flow fan or turbine axial flow blade, and the fan blades 22 should extend to the inner surface close to the outer ring 1 so as to fully apply work to the media on the flow channel. The bearing is preferably made into a double-row bearing as shown in fig. 1 and 2, the first bearing has more axial space and more structural utilizable, and the second bearing has fully symmetrical radial force to the crankshaft 91, so that the problems of installation deflection and the like are prevented, and the outer edge of the fan blade 22 touches the inner surface of the outer ring 1 during operation. In addition to the double row bearing form, three or even four rows are possible, but the more complicated the structure, the lower the practicality.

As shown in fig. 4, an atomizer 53 is provided in the oil tank 52, the oil tank 52 is connected to the first pressure plate 41 through two pipes, respectively, a pipe leading from the oil tank 52 to the space where the balls 3 are located is connected to the top of the inner surface of the oil tank 52, and a filter screen 55 is provided on the pipe;

the fan blade 22 and the ring body 21 are connected in a split mode and locked through a fastening piece, the fan blade 22 comprises a blade, a blade root 221 and a root plate 222, the blade root 221 is inserted into the outer surface of the ring body 21 in the radial direction, the root plate 222 props against the outer surface of the ring body 21, and the root plate 222 and the ring body 21 are locked through the fastening piece.

The fan blades 22 on the inner ring 2 suck the oil mist atomized by the atomizer 53 from the oil tank 52, and discharge the oil mist liquid subjected to a lubricating process back into the oil tank 52 to form a circulation, the atomizer 53 fully crushes the lubricating oil in the oil tank 52 into a mist shape and disperses the mist in the upper space in the oil tank 52, the filter screen 55 filters dust impurities entering the lubricating oil from structural gaps, and oil mist droplets with larger particle size are separated, so that only the more finely-crushed oil mist is led to the balls 3.

As shown in fig. 3, the outer ring 1 is of an open split type, and a connecting table 12 for connecting the two outer rings 1 together is arranged on the outer surface of the outer ring 1.

Through split type outer lane 1, ball 3 quantity no longer by assembly process restriction, can pack into as much as possible ball 3 for the inner and outer lane of bearing circumference as far as possible is even on radial holding power, during the assembly, pack ball 3 into the rolling groove of inner circle 2 in advance, use the frock to hold ball 3 and prevent to drop when packing into, then with two lamella outer lane 1 to the clamp merge, the ball is lived to the hoop for the fastener is in the same place with the joint table 12 locking of two lamella outer lane 1.

When the number of the balls 3 is large, a traditional retainer can be omitted, and friction between the traditional retainer and the balls is sliding friction and is a main source of heat generation of the bearing.

As shown in fig. 5 and 6, the blade root 221 has a regular polygon cross section, and the number of the threaded holes on the ring body 21 for fixing one fan blade 22 is proportional to the number of the polygon sides of the blade root 221.

The blade root 221 has a regular polygon cross section, and the regular polygon corresponds to different installation angles of the blade, so that a user can conveniently adjust the power-applying capability of the fan blade 22, so as to fully adapt to the use working conditions, for example, the regular pentagon has five angles, and the fan blade 22 also has five installation angles, and has different lift forces at the same rotating speed. Of course, this form of mounting angle adjustment is not stepless and is limited in number and may be modified to a blade root 221 of circular cross-section and a scalloped hole machined in the root plate 222 for fastening.

As shown in fig. 4, an oil cup 54 is provided on the top of the oil tank 52. The oil cup 54 facilitates the addition of lubricating oil from the outside to make up for the loss of lubricating oil during the circulation process.

As shown in fig. 1 and 4, a snap fit 51 is used at the end of the connecting line of the oil tank 52 and the first pressure plate 41. The bayonet 51 facilitates the pipe connection.

The atomizer 53 is an ultrasonic atomizer. The ultrasonic atomizer has the advantages of small structure, strong atomization capability, atomization in a pure physical mode and no change of the properties of lubricating oil.

As shown in fig. 1 and 7, the outer diameter of the first pressure plate 41 is larger than the outer diameter of the outer ring 1, a first seal ring 61 is arranged on the end surface of the first pressure plate 41 facing the outer ring 1, and the inner diameter of the first seal ring 61 is larger than the outer diameter of the outer ring 1; the outer diameter of the second pressure plate 42 is equal to the outer diameter of the outer ring 1, and a second sealing ring 62 is arranged on the outer cylindrical surface of the second pressure plate 42.

First pressure disk 41 directly acts as the bearing gland, need not go the corresponding gland part of design again when using, directly can accomplish the installation of bearing on the machine on the casing 92 of installation department with first pressure disk 41 fixed, collection dress ization. First sealing washer 61, second sealing washer 62 seal up the outer passageway of outer lane 1 respectively, undertake the static seal function, further increase the collection dress degree of this bearing, only need during the use with its suit to the spindle 91 on and push in casing 92 can.

The operation process of the device is as follows: the inner ring 2 rotates along with the crankshaft 91, the fan blade 22 rotates to blast surrounding oil mist, so that the oil mist enters from the first pressure plate 41, circulates back from the oil mist groove 11 on the end face of the outer ring 1 far away from the first pressure plate 41 and then goes out from the first pressure plate 41, an oil tank 52 is connected to the tail end to form circulation, an atomizer 53 is arranged in the oil tank 52 to fully crush lubricating oil into mist, the mist oil mist is excellent in lubricating property, and the circulating oil mist can carry away friction heat at the position of the ball 3.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. 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. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an outer lane has high speed bearing of oil mist passageway, includes outer lane (1), inner circle (2), ball (3), and outer lane (1) is located outside inner circle (2), sets up ball (3) between the interior outer lane, its characterized in that: the high-speed bearing further comprises a first pressure plate (41), a second pressure plate (42) and an oil tank (52), wherein the first pressure plate (41) and the second pressure plate (42) are mounted at two ends of the outer ring (1) through fasteners, the first pressure plate (41) is connected to the oil tank (52) through a pipeline, and sticky seals or lip oil seals are arranged on inner cylindrical surfaces of the first pressure plate (41) and the second pressure plate (42) adjacent to the inner ring (2);

an oil mist groove (11) is formed in the outer surface of the outer ring (1), the oil mist groove (11) extends from one side end face of the outer ring (1) to the other side end face, and two groups of through holes are formed in the first pressure plate (41) and are respectively connected to a center hole in the end face of the outer ring (1) and the oil mist groove (11) which are in contact with the through holes;

the inner ring (2) comprises a ring body (21) and fan blades (22) arranged on the outer surface of the ring body (21), and the fan blades (22) are uniformly distributed on the circumference;

an atomizer (53) is arranged in the oil tank (52), the oil tank (52) is respectively connected to the first pressure plate (41) through two pipelines, a pipeline leading from the oil tank (52) to a space where the balls (3) are located is connected with the top of the inner surface of the oil tank (52), and a filter screen (55) is arranged on the pipeline;

the fan blade (22) and the ring body (21) are connected in a split mode and locked through a fastening piece, the fan blade (22) comprises a blade, a blade root (221) and a root plate (222), the blade root (221) is inserted into the outer surface of the ring body (21) in the radial direction, the root plate (222) abuts against the outer surface of the ring body (21), and the root plate (222) and the ring body (21) are locked through the fastening piece;

the section of the blade root (221) is a regular polygon, and the number of threaded holes for fixing a fan blade (22) on the ring body (21) is proportional to the number of polygonal edges of the blade root (221);

an oil cup (54) is arranged at the top of the oil tank (52).