CN117249170B - Motor bearing unit with oil leakage prevention lubrication sealing structure - Google Patents

Motor bearing unit with oil leakage prevention lubrication sealing structure Download PDF

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Publication number
CN117249170B
CN117249170B CN202311206386.7A CN202311206386A CN117249170B CN 117249170 B CN117249170 B CN 117249170B CN 202311206386 A CN202311206386 A CN 202311206386A CN 117249170 B CN117249170 B CN 117249170B
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CN
China
Prior art keywords
oil
side cover
cover plate
cavity
sleeve
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CN202311206386.7A
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Chinese (zh)
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CN117249170A (en
Inventor
李伟
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Yixing Huayong Motor Co ltd
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Yixing Huayong Motor Co ltd
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Priority to CN202311206386.7A priority Critical patent/CN117249170B/en
Publication of CN117249170A publication Critical patent/CN117249170A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/664—Retaining the liquid in or near the bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/042—Housings for rolling element bearings for rotary movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Abstract

The invention discloses a motor bearing unit with an oil leakage prevention lubricating sealing structure, which relates to the technical field of motor bearing units.

Description

Motor bearing unit with oil leakage prevention lubrication sealing structure
Technical Field
The invention relates to the technical field of motor bearing units, in particular to a motor bearing unit with an oil leakage prevention lubrication sealing structure.
Background
The motor bearing is a special bearing specially applied to a motor or a motor, and the principle is as follows: smooth metal balls or rollers and lubricated inner and outer race metal surfaces are used to reduce friction, the balls or rollers "bear" the load and support the motor spindle so that the motor rotor rotates smoothly, and the structure of the motor spindle mainly comprises an outer bushing, balls/needle rollers and an inner bushing.
In the case of motors or motors that operate for a long period of time, particularly those used in large-scale equipment, there is a higher demand for motor bearings, and in order to reduce mechanical wear of the motor bearings themselves, lubrication medium is currently applied to the motor bearings, and the lubrication medium is mainly released between the outer bushing and the inner bushing, and both the liquid lubrication medium and the colloid lubrication medium have a problem that the lubrication medium overflows into the interior of the motor, and affects the use efficiency of the rotor or stator in the motor, so that it is said that: the sealing of the lubrication medium is particularly important for motor bearings to which the lubrication medium is applied, as explained further: because the inner lining and the outer lining are in a relative rotation state, if a rubber structure sealing mode is adopted, the rubber structure is damaged by friction, so that the sealing performance of the rubber structure is exponentially reduced.
In this regard, the present application proposes a solution.
Disclosure of Invention
The invention aims to provide a motor bearing unit with an oil leakage prevention lubrication sealing structure, which is used for solving the problem that a lubricating medium is applied to a motor bearing due to mechanical friction damage of the motor bearing, but the lubricating medium also directly influences the service efficiency of an inner rotor or a stator of the motor.
The aim of the invention can be achieved by the following technical scheme: the motor bearing unit with the oil leakage prevention lubrication sealing structure comprises a bearing body, wherein the bearing body comprises an inner lining ring, an outer lining sleeve and a plurality of balls, the outer lining sleeve is positioned outside the inner lining ring, an opening ball sleeve corresponding to the balls is arranged on the outer wall of the circumference of the inner lining ring, which is close to the outer lining sleeve, and the opening ball sleeve is arranged in an annular array along the center point of the inner lining ring;
The bearing comprises a bearing body, wherein side cover plates are arranged at two sides of the bearing body, two fixing plates are arranged at the outer edge of the bearing body, an annular oil cavity is formed in the outer wall, close to the outer lining, of the fixing plates, a plurality of oil ports are formed in the annular oil cavity, the oil ports penetrate through an outer lining, an oil filling cavity is formed between the outer wall of the inner lining and the outer lining, and balls and an opening ball sleeve are arranged in the oil filling cavity;
The side cover plate is provided with two hollow pipes, one end of the lower side of each hollow pipe is communicated with the inside of the oil filling cavity, one end of the side cover plate, which is close to the bearing body, is rotatably provided with a plurality of movable sleeves, the movable sleeves are positioned at the middle positions of the fixed plate and the outer bushing, and the movable sleeves are provided with outer rubber sleeves;
the upper end position of the hollow pipe is communicated with the movable sleeve, the movable sleeve is hollow, a connecting spring is arranged at the top end inside the hollow pipe, a movable blocking ball is arranged at the tail end of the connecting spring, and the movable blocking ball is in sliding connection with the inner wall position of the hollow pipe.
Further provided is that: the side cover plate is fixedly connected with the inner lining ring through the screws;
The side cover plate is provided with a cavity at the position of the outer wall close to the fixing plate, the cavity is provided with filling materials, and the side cover plate is tightly attached to the fixing plate.
Further provided is that: the hollow pipes on one side cover plate are symmetrically arranged along the vertical plane, and the hollow pipes on the other side cover plate are symmetrically arranged along the horizontal plane.
Further provided is that: the side cover plate is provided with a clearance sliding cavity between the side cover plate and the outer lining, an annular chute is arranged at the clearance position of the fixing plate and the outer lining corresponding to the two sides of the annular oil cavity, and the width of the annular chute is smaller than the outer diameter of the outer rubber leather sheath.
Further provided is that: the movable sleeve is arranged on the outer wall of the circumference of one end, close to the hollow pipe, of the movable sleeve to be a spiral sheet part, the spiral diameter of the spiral sheet part is equal to the groove width of the annular chute, and the clearance sliding cavity is communicated with the annular chute.
Further provided is that: the setting position of the movable blocking ball is lower than the setting position of the movable sleeve.
Further provided is that: a plurality of oil-cooling plates are arranged on the circumferential outer wall of the inner liner, the oil-cooling plates are arranged in an annular array along the center point of the inner liner, and the oil-cooling plates are positioned in the middle position of the opening ball sleeve at every two adjacent positions.
Further provided is that: the oil-cooling plate is inclined along the thickness direction of the lining ring, and the inclination directions of every two adjacent oil-cooling plates are opposite.
The invention has the following beneficial effects:
1. The invention is based on the basic structure of the bearing, adds three key structures of a fixed plate, a side cover plate and a fan oil plate, wherein the fixed plate and the side cover plate are mutually matched, and the connection mode between the side cover plate and the bearing body is realized, and the concrete expression is as follows: the side cover plate is fixedly connected with the inner lining ring, so that the side cover plate can synchronously rotate in cooperation with the rotation process of the inner lining ring, and the side cover plate is not contacted with the outer lining, and the following specific description is provided: the gap sliding cavity is arranged between the movable sleeve and the outer rubber sleeve, and the movable sleeve and the outer rubber sleeve can be matched with the rotation process of the side cover plate to perform autonomous rotation, so that the outer rubber sleeve, the fixed plate and the outer liner are kept in a relatively dynamic state, the problem of excessive abrasion of the outer rubber sleeve is avoided, the filling material is only used as a structure for receiving friction damage, and in the actual operation effect, the filling material can be quickly replaced or lubricating oil can be added in a mode of disassembling the side cover plate and the fixed plate;
2. Further to be described is: in the normal operation process of the bearing body, the side cover plate is matched with the inner liner ring to be in a high-speed rotating state, in the process, the side cover plate generates larger centrifugal force and drives the movable blocking ball on the corresponding position to drive the connecting spring to compress until the connecting position of the hollow pipe and the annular oil cavity is exposed, so that the annular oil cavity and the oil filling cavity are communicated through the hollow pipe, on the basis, when the inner liner ring rotates at a high speed, the oil fan plate drives lubricating oil to flow, and the direction of each oil fan plate is further limited, and the purpose is that: a part of lubricating oil is further pushed into the hollow pipe in an inclined mode, so that the communication speed between the annular oil cavity and the oil filling cavity is accelerated, and the phenomenon that the use effect of the lubricating oil in the oil filling cavity is influenced due to the fact that the temperature of the lubricating oil in the oil filling cavity is increased when the lubricating oil is continuously used is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a motor bearing unit with an oil leakage prevention lubrication seal structure according to the present invention;
FIG. 2 is an exploded view of FIG. 1 in a motor bearing unit with an oil leakage prevention lubrication seal according to the present invention;
FIG. 3 is a split view of a bearing body in a motor bearing unit with an oil leakage prevention lubrication seal structure according to the present invention;
FIG. 4 is a partial cross-sectional view of FIG. 1 in a motor bearing unit having an oil-leak resistant lubrication seal in accordance with the present invention;
FIG. 5 is a schematic view of a side cover plate component in a motor bearing unit with an oil leakage preventing lubrication seal structure according to the present invention;
FIG. 6 is a schematic view of the structure of part B of the motor bearing unit with the oil leakage preventing lubrication seal structure according to the present invention;
Fig. 7 is a schematic structural view of a portion a of a motor bearing unit with an oil-leakage-proof lubrication seal structure according to the present invention.
In the figure: 1. a fixing plate; 2. a hollow tube; 3. a side cover plate; 4. a liner ring; 5. a filler; 6. an outer liner; 7. an annular oil chamber; 8. a ball; 9. an open ball sleeve; 10. a fan oil plate; 11. an outer rubber sleeve; 12. a spiral piece part; 13. a movable sleeve; 14. a movable blocking ball; 15. a gap sliding cavity; 16. and a connecting spring.
Description of the embodiments
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The motor bearing is not limited to a common motor, the bearing is specially used in large-scale equipment, the requirement is higher, lubricating oil is often required to be added in the bearing, the mechanical abrasion of the bearing is further reduced by friction reduction, no matter the motor bearing is liquid lubricating medium or colloid lubricating medium, the problem that the lubricating medium overflows into the motor exists, and the use efficiency of a rotor or a stator in the motor is affected, and the application provides a solution to the problems:
Referring to fig. 1 to 7, the motor bearing unit with an oil leakage prevention lubrication sealing structure in this embodiment includes a bearing body, the bearing body includes an inner lining ring 4, an outer lining ring 6 and a plurality of balls 8, the outer lining ring 6 is located outside the inner lining ring 4, an open ball sleeve 9 corresponding to the balls 8 is installed on the circumferential outer wall of the inner lining ring 4 close to the outer lining ring 6, and the open ball sleeve 9 is arranged in an annular array along the center point of the inner lining ring 4;
The two sides of the bearing body are provided with side cover plates 3, the outer edge of the bearing body is provided with two fixing plates 1, the outer wall of the fixing plate 1, which is close to the outer lining 6, is provided with an annular oil cavity 7, the annular oil cavity 7 is provided with a plurality of oil ports, the oil ports penetrate through the outer lining 6, an oil filling cavity is arranged between the outer wall of the inner lining 4 and the outer lining 6, and a ball 8 and an opening ball sleeve 9 are positioned in the oil filling cavity;
Two hollow pipes 2 are arranged on the side cover plate 3, one end of the lower side of the hollow pipe 2 is communicated with the inside of the oil filling cavity, one end of the side cover plate 3, which is close to the bearing body, is rotatably provided with a plurality of movable sleeves 13, the movable sleeves 13 are positioned at the middle positions of the fixed plate 1 and the outer liner 6, and the movable sleeves 13 are provided with outer rubber jackets 11;
The upper end position of the hollow pipe 2 is communicated with the movable sleeve 13, the movable sleeve 13 is hollow, a connecting spring 16 is arranged at the top end of the inside of the hollow pipe 2, a movable blocking ball 14 is arranged at the tail end of the connecting spring 16, the movable blocking ball 14 is in sliding connection with the inner wall position of the hollow pipe 2, a plurality of screws are arranged at the position of the side cover plate 3 corresponding to the inner lining ring 4, and the side cover plate 3 is fixedly connected with the inner lining ring 4 through the screws;
a cavity is formed in the position, close to the outer wall, of the side cover plate 3 and the fixed plate 1, and a filling material 5 is arranged in the cavity, and the side cover plate 3 is tightly attached to the fixed plate 1.
The use mode of the bearing body is not described in the invention, and the installation process of the integral structure needs to be described:
The installation process comprises the following steps: the production process of the bearing body is consistent with the current processing mode, and the difference is that: in the actual assembly process, firstly, the side cover plate 3 is placed on the inner lining ring 4, and then two fixing plates 1 are respectively sleeved, and referring to fig. 2, the fixing plates 1 are used for matching with the outer edge of the bearing body, so that the outer lining ring 6 is semicircular, and a certain amount of lubricating oil medium such as lubricating oil needs to be injected into the annular oil cavity 7 when the fixing plates 1 are installed, and the main part is liquid lubricating oil;
the filler 5 is additionally arranged at the middle position of the fixed plate 1 and the side cover plate 3, and finally the side cover plate 3 is fastened on the inner lining ring 4 by using screws, and the two fixed plates 1 are locked, and the side cover plate 3 is not fixedly connected with the outer lining 6 and the fixed plate 1 in the process;
Also to be described is: referring to fig. 7, when the side cover plate 3 is placed, it is also necessary to ensure that each movable sleeve 13 is clamped at the outer side position of the outer liner 6, so when the fixed plate 1 is locked, the fixed plate 1 cooperates with the outer liner 6 to complete the "fixing" process on the side cover plate 3;
The using process comprises the following steps: the bearing belongs to passive structure, for example, the high-speed rotation is carried out to the lining ring 4 in cooperation with the motor rotating shaft, the side cover plate 3 can also rotate synchronously in the high-speed rotation process of the lining ring 4, and lubricating oil in the annular oil cavity 7 penetrates into the middle position of the outer lining sleeve 6 and the inner lining ring 4 along the oil port and is filled in the clearance sliding cavity 15, so that during the rotation process, direct friction can not occur between the side cover plate 3 and the outer lining sleeve 6 through the clearance sliding cavity 15, friction damage existing in the integral structure is only accepted by the filling material 5, the selection of the filling material 5 is not limited here, the filling material 5 only serves as a friction damage structure between the side cover plate 3 and the fixed plate 1, and the sealing effect between the side cover plate 3 and the fixed plate 1 is realized, so that the filling material 5 can be replaced according to the installation process under the long-term use condition, the purpose of the part is that: the maintenance integral bearing body can not be damaged by friction, and lubricating oil in the maintenance integral bearing body can be sealed, so that the leakage and overflow of the lubricating oil are avoided.
Example two
Based on the use principle of the first embodiment, the present embodiment proposes the following optimization scheme:
Scheme one
A plurality of oil-cooling plates 10 are arranged on the circumferential outer wall of the inner lining ring 4, the oil-cooling plates 10 are arranged in an annular array along the center point of the inner lining ring 4, the oil-cooling plates 10 are positioned at the middle positions of the opening ball sleeves 9 at every two adjacent positions, the oil-cooling plates 10 are inclined along the thickness direction of the inner lining ring 4, and the inclination directions of the oil-cooling plates 10 at every two adjacent positions are opposite.
The purpose is that: the use process of the bearing body is described simply, wherein the inner lining ring 4 is mainly used for fixing a transmission rod on large equipment, the inner lining ring 4 is in a high-speed rotating state, and in the rotating process, lubricating oil in an oil filling cavity between the inner lining ring 4 and the outer lining ring 6 flows at a high speed under the action of the oil fan plate 10, so that the flowing process of the lubricating oil is promoted, and the temperature of the lubricating oil which is remained in the oil filling cavity for a long time is prevented from rising due to the running process of the inner lining ring 4;
And is described with reference to fig. 3: if the inclination directions of the oil-cooling plates 10 at every two adjacent positions are opposite, if the oil-cooling plates 10 are parallel to the thickness direction of the inner liner 4, the lubricating oil therein only keeps flowing, but when the inclination directions are limited, the lubricating oil can be pushed to two sides on the premise of ensuring the flow of the lubricating oil, and the lubricating oil pushed mainly enters the hollow pipe 2 with reference to fig. 4 and 7.
Scheme II
A clearance sliding cavity 15 is arranged between the side cover plate 3 and the outer lining 6, an annular chute is arranged at the clearance position of the fixed plate 1 and the outer lining 6 corresponding to the two sides of the annular oil cavity 7, the chute width of the annular chute is smaller than the outer diameter of the outer rubber leather sheath 11, a spiral sheet part 12 is arranged on the outer wall of the circumference of one end of the movable sleeve 13, which is close to the hollow tube 2, the spiral diameter of the spiral sheet part 12 is equal to the chute width of the annular chute, and the clearance sliding cavity 15 is communicated with the annular chute.
The purpose is that: in the first embodiment, the gap sliding cavity 15 is used for "lubricating" the side cover plate 3 and the outer liner 6 to avoid the outer liner 6 from being damaged by mechanical friction, but in practical situations, there is no direct fixing manner between the side cover plate 3 and the fixed plate 1, and between the side cover plate 3 and the outer liner 6, and the movable sleeve 13 is used as an indirect connection structure, wherein the movable sleeve 13 is respectively clamped by the fixed plate 1 and the outer liner 6, and when the outer rubber leather sheath 11 is clamped by the fixed plate 1 and the outer liner 6, the outer rubber leather sheath 11 is locally deformed, which needs to be described: when the side cover plate 3 rotates at a high speed, if the outer rubber sleeve 11 is in a relatively static state, direct abrasion occurs between the outer rubber sleeve 11 and the fixed plate 1 and the outer liner 6, in this case, the 'fixing' mode of the side cover plate 3 and the fixed plate 1 and the outer liner 6 is gradually loosened, so that the whole device is unstable in operation process, the movable sleeve 13 is limited to keep rotating with the fixed plate 1 and the outer liner 6, and the positions of contact points of the outer rubber sleeve 11 and the fixed plate 1 and the outer liner 6 are continuously changed on the basis of keeping rotating, so that friction damage does not occur between the fixed plate 1 and the outer liner 6 and the outer rubber sleeve 11;
The spiral sheet part 12 does not interfere the normal rotation process of the movable sleeve 13, and part of lubricating oil in the clearance sliding cavity 15 also lubricates the movable sleeve 13 through the spiral sheet part 12, so that the friction force of the movable sleeve 13 corresponding to the spiral sheet part 12, the fixed plate 1 and the outer liner 6 is reduced.
Scheme III
The hollow pipe 2 on one side cover plate 3 is symmetrically arranged along the vertical plane, the hollow pipe 2 on the other side cover plate 3 is symmetrically arranged along the horizontal plane, and the setting position of the movable blocking ball 14 is lower than the setting position of the movable sleeve 13.
The purpose is that: in combination with the second scheme, the clearance sliding cavity 15 only ensures that the side cover plate 3 and the outer liner 6 are not contacted, which is essentially only to ensure that a small part of lubricating oil lubricates the side cover plate 3, the outer liner 6 and the spiral piece part, but the clearance sliding cavity 15 cannot be used as a communication channel of the lubricating oil, as in the first scheme, the temperature of the lubricating oil in the oil filling cavity rises when the lubricating oil continuously flows, so that the lubricating oil in the oil filling cavity needs to flow back into the annular oil cavity 7, and the technical content of the first scheme is matched again:
when the side cover plate 3 rotates at a high speed, the movable blocking ball 14 in the side cover plate can squeeze the connecting spring 16 under the action of high-speed centrifugal force until the communicating part of the hollow pipe 2 and the movable sleeve 13 is exposed, so that part of lubricating oil is ensured to flow back into the annular oil cavity 7 along the hollow pipe 2-the movable sleeve 13 under the action of pressurization of the oil fan plate 10, and the autonomous circulation process of the lubricating oil is realized;
The same shall be said: when the side cover plate 3 stops rotating, the movable blocking ball 14 is reset, lubricating oil is not reversed, the lubricating oil in the whole motor bearing unit is in a relatively static sealing state, and the following description is needed: the movable blocking ball 14 can be further limited, specifically, by setting the gravity of the movable blocking ball 14, so that the rotation process of the side cover plate 3 needs to generate enough centrifugal force and drive the movable blocking ball 14 to move to the corresponding position, so that the following can be understood: the integral motor bearing unit may also revert to a static sealing condition when it is put into use in a device having a lower rotational speed, or when it is switched from a high rotational speed to a low rotational speed.
To sum up: the bearing is characterized in that a side cover plate, a fixed plate and an oil fan plate are additionally arranged on the basis of a basic structure of the bearing, an annular oil cavity between the fixed plate and an outer lining is used as an area for storing lubricating oil, when the inner lining rotates at a high speed, the lubricating oil in the annular oil cavity permeates into an oil filling cavity, the balls and an opening ball sleeve are lubricated to reduce friction force, the movable sleeve and the outer rubber sleeve are matched with the rotating process of the movable sleeve and the outer rubber sleeve, friction damage cannot occur between the side cover plate and the outer lining, filling materials are used as supplementary media for friction damage, the high-speed rotating process of the inner lining is further utilized, the oil fan plate is utilized to push the lubricating oil to a hollow pipe, and centrifugal force on the side cover plate is synchronously combined, so that the lubricating oil is reversely flowed into the annular oil cavity, and the lubricating oil is promoted by dynamic flowing of the lubricating oil and the lubricating oil leakage is avoided when the bearing normally operates.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims (3)

1. The motor bearing unit with the oil leakage prevention lubricating sealing structure comprises a bearing body and is characterized in that the bearing body comprises an inner lining ring (4), an outer lining sleeve (6) and a plurality of balls (8), the outer lining sleeve (6) is positioned outside the inner lining ring (4), an opening ball sleeve (9) corresponding to the balls (8) is arranged on the outer wall of the circumference of the inner lining ring (4) close to the outer lining sleeve (6), and the opening ball sleeve (9) is arranged in an annular array along the center point of the inner lining ring (4);
The bearing comprises a bearing body, wherein side cover plates (3) are arranged at two sides of the bearing body, two fixing plates (1) are arranged at the outer edge of the bearing body, an annular oil cavity (7) is formed in the outer wall, close to the outer liner (6), of the fixing plates (1), a plurality of oil ports are formed in the annular oil cavity (7), the oil ports penetrate through the outer liner (6), an oil filling cavity is formed between the outer wall of the inner liner (4) and the outer liner (6), and balls (8) and an opening ball sleeve (9) are arranged in the oil filling cavity;
Two hollow pipes (2) are arranged on the side cover plate (3), one end of the lower side of the hollow pipe (2) is communicated with the inside of the oil filling cavity, one end, close to the bearing body, of the side cover plate (3) is rotatably provided with a plurality of movable sleeves (13), the movable sleeves (13) are positioned at the middle positions of the fixed plate (1) and the outer lining (6), and the movable sleeves (13) are provided with outer rubber sleeves (11);
The upper end of the hollow pipe (2) is communicated with the movable sleeve (13), the movable sleeve (13) is hollow, a connecting spring (16) is arranged at the top end inside the hollow pipe (2), a movable blocking ball (14) is arranged at the tail end of the connecting spring (16), and the movable blocking ball (14) is in sliding connection with the inner wall of the hollow pipe (2);
A gap sliding cavity (15) is arranged between the side cover plate (3) and the outer lining (6), annular sliding grooves are arranged at the gap positions of the fixing plate (1) and the outer lining (6) corresponding to the two sides of the annular oil cavity (7), and the groove width of each annular sliding groove is smaller than the outer diameter of the outer rubber leather sheath (11);
The movable sleeve (13) is arranged on the outer wall of the circumference close to one end of the hollow pipe (2) to form a spiral sheet part (12), the spiral diameter of the spiral sheet part (12) is equal to the groove width of the annular chute, the clearance sliding cavity (15) is communicated with the annular chute, and the arrangement position of the movable blocking ball (14) is lower than that of the movable sleeve (13);
Install a plurality of fan oil boards (10) on the circumference outer wall of inner race (4), a plurality of fan oil boards (10) are the annular array setting along the centre of a circle point of inner race (4), and fan oil board (10) are located the intermediate position of the open ball cover (9) of every two adjacent positions, fan oil board (10) are the slope form along the thickness direction of inner race (4), and the slope direction of every two adjacent positions fan oil board (10) is opposite.
2. The motor bearing unit with the oil leakage prevention lubrication sealing structure according to claim 1, wherein a plurality of screws are arranged on the side cover plate (3) at positions corresponding to the inner lining rings (4), and the side cover plate (3) is fixedly connected with the inner lining rings (4) through the screws;
The side cover plate (3) is provided with a cavity on the outer wall position close to the fixing plate (1), a filling material (5) is arranged in the cavity, and the side cover plate (3) is tightly attached to the fixing plate (1).
3. The motor bearing unit with the oil leakage prevention lubrication seal structure according to claim 1, wherein the hollow tube (2) on one of the side cover plates (3) is symmetrically arranged along a vertical plane, and the hollow tube (2) on the other side cover plate (3) is symmetrically arranged along a horizontal plane.
CN202311206386.7A 2023-09-19 2023-09-19 Motor bearing unit with oil leakage prevention lubrication sealing structure Active CN117249170B (en)

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