CN113586600A - Novel double-layer dustproof and leakproof sealed turntable bearing - Google Patents
Novel double-layer dustproof and leakproof sealed turntable bearing Download PDFInfo
- Publication number
- CN113586600A CN113586600A CN202110837240.7A CN202110837240A CN113586600A CN 113586600 A CN113586600 A CN 113586600A CN 202110837240 A CN202110837240 A CN 202110837240A CN 113586600 A CN113586600 A CN 113586600A
- Authority
- CN
- China
- Prior art keywords
- ring
- end surface
- outer ring
- face
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
-
- 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
- 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
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a novel double-layer dustproof and leakproof sealed turntable bearing, which relates to the technical field of bearings and comprises an outer ring and an inner ring, wherein an outer-layer sealing ring and an inner-layer sealing ring are arranged at the joint of the outer ring and the inner ring, the outer-layer sealing ring is arranged at two ends of the joint of the outer ring and the inner ring in the vertical direction, and the inner-layer sealing ring is arranged in the middle of the joint of the outer ring and the inner ring; after the outer ring and the inner ring are installed together, the upper end face of the inner ring is lower than the upper end face of the outer ring, and the lower end face of the outer ring is higher than the lower end face of the inner ring. A first layer of sealing device is formed by the inner layer sealing ring and the piston ring, and a second layer of sealing device is formed by the outer layer sealing ring and the annular gasket, so that lubricating grease leakage and external impurities are prevented from entering the inside of the turntable bearing.
Description
Technical Field
The invention relates to a bearing, in particular to a novel double-layer dustproof and leakproof sealed turntable bearing, and specifically relates to a novel dustproof and leakproof turntable bearing utilizing a double-layer sealing ring mounting structure.
Background
The turntable bearing is an extra-large bearing, is a core component of large-scale rotating equipment, plays a role in relative motion and load transmission of the two components, can directly influence the working efficiency and personnel safety of the whole equipment if the turntable bearing can normally operate, and is applied to fields such as wind power generation, entertainment, medical treatment, military, food processing and the like gradually from the earliest traditional engineering machinery. The structure of the turntable bearing mainly comprises a rolling body, an inner ring, an outer ring, a spacer block or a retainer and the like, wherein the inner ring and the outer ring of the turntable bearing are connected with an upper supporting structure and a lower supporting structure through high-strength bolts for installation reasons. Sufficient lubricating grease is kept between rolling element and the inside of outer lane, in order to prevent that lubricating grease from losing, avoids rolling element and the lubricated bad wearing and tearing and the abrasive dust production that causes of outer lane, prevents simultaneously that external impurity from getting into inside the slewing bearing, at slewing bearing outside installation sealing washer, plays dustproof preventing leaking the effect, protection slewing bearing.
The turntable bearing has a severe working environment, and the special structural form and the working environment have high sealing requirements. Such as: wind generating sets are mostly located in the field with bad weather and in complicated and changeable atmospheric environments, the aging of sealing rings is accelerated by moisture in the environment, salt in seawater, acid rain, corrosive gas and the like, and the aging of the sealing rings causes external dust to enter lubricating grease and then the lubricating grease is accelerated to age and deteriorate. Once the turntable bearing breaks down, the normal operation of host computer equipment is influenced, very easily leads to major safety accident, and turntable bearing maintenance difficulty moreover, for example: the wind driven generator is required to be lifted to a high place for disassembly and maintenance, the repair cost is increased, the maintenance risk of workers is increased, the replacement period is long, the cost is high, the project progress is influenced, and huge economic loss is caused. The inner ring and the outer ring of the turntable bearing rotate relatively, and one end of the sealing ring is in a movable state relative to the inner ring and the outer ring; the turntable bearing is often subjected to heavy load, and the inner ring and the outer ring have large offset; the turntable bearing has a large structural size, lubricating grease is usually pressurized and filled in order to ensure a good lubricating effect, so that the sealing ring moves relative to the inner ring and the outer ring, a certain amount of expansion and contraction are provided, certain sealing performance is ensured, leakage is prevented, and external impurities enter the inside of the turntable bearing.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a novel double-layer dustproof and leakproof sealed turntable bearing, a first layer of sealing device is formed by an inner layer sealing ring and a piston ring, so that the inner layer ring-shaped sealing ring is ensured to be contacted with the inner end surface of an outer ring and to relatively rotate, the middle part of the ring-shaped sealing ring has W-shaped expansion amount, the inner ring and the outer ring are allowed to generate large offset under heavy load, the piston ring ensures that one end of the ring-shaped sealing ring is fixed, and simultaneously the piston ring is ensured to be contacted with the inner end surface of the outer ring at the same time, so that the effect of first layer double sealing is achieved. Constitute second layer sealing device through outer sealing washer and annular washer, guarantee on the one hand that outer sealing washer and outer lane take place relative rotary motion region for inside the slewing bearing, not with external direct contact, on the other hand fixes through annular washer, does not influence the normal installation of slewing bearing, prevents moreover that lubricating grease from leaking and outside impurity from getting into inside the slewing bearing.
The present invention achieves the above-described object by the following technical means.
The utility model provides a novel sealed carousel bearing is prevented leaking by bilayer, includes outer lane and inner circle, the back is in the same place in outer lane and the installation of inner circle, and the inner circle up end is less than outer lane up end, and the inner circle down end is less than outer lane down end, follows both ends are provided with outer sealing washer, the centre is provided with the inlayer sealing washer on the vertical direction of outer lane and inner circle junction.
Further, the outer ring comprises an upper end surface of the outer ring, a lower end surface of the outer ring and an inner end surface of the outer ring; the outer ring inner end surface is provided with an outer ring upper annular groove and an outer ring lower annular groove; the inner ring comprises an inner ring upper end surface, an inner ring lower end surface and an inner ring outer end surface; an upper annular groove and a lower annular groove are formed in the outer end face of the inner ring; an annular groove on the upper end surface of the inner ring and an annular groove on the lower end surface of the inner ring are respectively formed on the upper end surface of the inner ring and the lower end surface of the inner ring; an outer sealing ring is arranged between the annular groove on the upper end surface of the inner ring and the annular groove on the lower end surface of the inner ring and the stepped groove structure respectively; and inner-layer sealing rings are arranged between the upper annular groove on the outer end face of the inner ring and the lower annular groove on the outer end face of the inner ring and the upper annular groove and the lower annular groove on the outer ring respectively.
Further, an arc-shaped structure for mounting the balls and the retainer is further arranged on the inner end face of the outer ring; and the outer end face of the inner ring is provided with an arc-shaped structure which is matched with the inner end face of the outer ring and is used for mounting the balls and the retainer.
Furthermore, the annular groove on the outer ring and the annular groove under the outer ring are symmetrically arranged along the arc-shaped structure.
Furthermore, the stepped groove structure formed on the upper end surface of the outer ring is sequentially a high groove of the upper end surface of the outer ring, a low groove of the upper end surface of the outer ring and a middle groove of the upper end surface of the outer ring, and the middle groove of the upper end surface of the outer ring is close to the inner end surface of the outer ring; the stepped groove structure formed in the lower end face of the outer ring is sequentially a high groove of the lower end face of the outer ring, a low groove of the lower end face of the outer ring and a middle groove of the lower end face of the outer ring, and the middle groove of the lower end face of the outer ring is close to the inner end face of the outer ring.
Further, the inner seal rings arranged in the annular groove on the outer end face of the inner ring and the annular groove below the outer end face of the inner ring are positioned through the piston ring.
Furthermore, the outer sealing rings arranged in the annular groove on the upper end surface of the inner ring and the annular groove on the lower end surface of the inner ring are pressed and positioned through the annular gasket on the upper end surface of the inner ring.
Furthermore, an outer sealing ring arranged in the stepped groove structure is in clearance fit with an annular gasket on the upper end face of the outer ring.
Furthermore, the lower end face of one end of the outer sealing ring is attached to the middle groove of the upper end face of the outer ring, the annular gasket of the upper end face of the outer ring is fixed in the high groove of the upper end face of the outer ring through a fixing screw, and the lower end face of the annular gasket of the upper end face of the outer ring is positioned above the outer sealing ring; the middle part of the outer sealing ring is provided with W-shaped expansion amount, so that when the inner ring and the outer ring are in extreme offset positions, the movable end of the outer sealing ring is always positioned in the lower groove of the upper end surface of the outer ring and the middle groove of the upper end surface of the outer ring; the inner ring up end face annular groove installs the outer sealing washer other end, and set screw passes outer sealing washer and fixes outer sealing washer in inner ring up end face annular groove.
Furthermore, the middle part of the inner-layer sealing ring is provided with a W-shaped extension.
Has the advantages that:
(1) the utility model provides a novel sealed slewing bearing is prevented leaking by bilayer, installation space does not influence slewing bearing overall structure intensity for a short time, does not influence slewing bearing and last bearing structure and under bracing structural installation simultaneously, and sealing device does not influence slewing bearing normal rotary motion with the laminating of interior outer lane. The sealing ring is fixed on the turntable bearing through an annular gasket and a fixing screw, and is convenient to assemble, disassemble and replace;
(2) the middle parts of the outer sealing ring and the inner sealing ring are provided with W-shaped expansion amount, when the turntable bearing bears extreme load and the inner and outer rings are greatly deviated, the sealing rings can still be in close contact with the inner and outer rings, and the sealing effect is achieved; the inner-layer sealing ring of the turntable bearing is sealed with the piston ring in a combined manner, so that one end of the sealing ring is fixed relative to the turntable bearing on one hand, the other end of the sealing ring is attached to the inner end face of the turntable bearing on the other hand, and the piston ring is kept in contact with the inner end face of the outer ring of the turntable bearing constantly while pressing the sealing ring;
(3) the movable end of the outer sealing ring is of an L-shaped structure and is arranged in a low-order ladder groove in the upper end surface and the lower end surface of the outer ring of the turntable bearing, so that the outer ring of the turntable bearing is contacted with the sealing ring at any time, the normal rotation of the turntable bearing is not influenced, the upper part of the sealing ring is contacted with the annular gasket of the outer ring, and external impurities are prevented from entering the inside of the turntable bearing and lubricating grease is prevented from leaking outwards;
(4) the utility model provides a novel sealed carousel bearing is prevented leaking by bilayer is dustproof under the condition that does not influence overall structure and rotary motion, can realize preventing dustproof and prevent revealing the effect, improves carousel bearing security and reliability, has high economic nature and practicality.
(5) The novel double-layer dustproof and leakproof sealing inner sealing ring is combined with the annular sealing ring through the piston ring, on one hand, the annular sealing ring is tightly pressed through the piston ring, the annular sealing ring is guaranteed to be always positioned in the groove of the inner end face of the outer ring, the sealing purpose is achieved, meanwhile, the sealing ring is always attached to the outer ring to rotate, on the other hand, the piston ring is always close to the inner end face of the outer ring, and the sealing and leakproof purpose is achieved. The outer sealing ring is fixed on the inner ring and the outer ring through the gasket, so that the relative rotation of the inner ring and the outer ring is not influenced on one hand, and the installation of the inner ring and the outer ring is not influenced on the other hand. The turntable bearing is one of the extra-large special equipment, and in order to ensure the operation safety of the turntable bearing, a double-layer dustproof and leakproof sealing device is designed, so that the deterioration and leakage of lubricating grease and the entering of external impurities are avoided, the working efficiency and the safety are improved, and the turntable bearing has very high economical efficiency and practicability.
Drawings
FIG. 1 is a view showing a construction of a turntable bearing connection in the present invention;
FIG. 2 is a view of the inner race structure of the turntable bearing of FIG. 1 in accordance with the present invention;
FIG. 3 is a view of the outer race structure of the turntable bearing of FIG. 1 in accordance with the present invention;
FIG. 4 is an inner seal structure of a turntable bearing according to the present invention;
FIG. 5 is an outer seal structure of a turntable bearing in accordance with the present invention;
figure 6 is a carousel bearing piston ring structure of the present invention.
Description of reference numerals:
1-an upper support structure; 2-high strength bolts; 3-an outer ring; 4-the upper end surface of the outer ring; 5-an annular gasket on the upper end surface of the outer ring; 6-fixing screws; 7-a middle groove on the upper end surface of the outer ring; 8-upper end surface lower groove of the outer ring; 9-a high groove on the upper end surface of the outer ring; 10-outer layer sealing ring; 11-the upper end surface of the inner ring; 12-an annular gasket on the upper end face of the inner ring; 13-inner ring; 14-an annular groove on the upper end surface of the inner ring; 15-the outer end face of the inner ring; 16-an annular groove on the outer end face of the inner ring; 17-a piston ring; 18-inner layer sealing ring; 19-a rolling ball; 20-lower annular grooves on the outer end surface of the inner ring; 21-the lower end surface of the inner ring; 22-a lower support structure; 23-the lower end surface of the outer ring; 24-an annular gasket on the lower end face of the outer ring; 25-a middle groove on the lower end surface of the outer ring; 26-a lower groove on the lower end surface of the outer ring; 27-a high groove on the lower end surface of the outer ring; 28-inner end surface of outer ring; 29-lower annular groove of inner end surface of outer ring; 30-an annular groove on the inner end surface of the outer ring; 31-an annular gasket on the lower end face of the inner ring; 32-annular groove on lower end surface of inner ring.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
A novel double-layer dustproof leakage-proof sealed turntable bearing comprises an outer ring 3 and an inner ring 13, wherein after the outer ring 3 and the inner ring 13 are installed together, an upper end surface 11 of the inner ring is lower than an upper end surface 4 of the outer ring, and a lower end surface 21 of the inner ring is lower than a lower end surface 23 of the outer ring; outer-layer sealing rings 10 are arranged at two ends of the joint of the outer ring 3 and the inner ring 13 in the vertical direction, and an inner-layer sealing ring 18 is arranged in the middle of the joint; the outer ring 3 comprises an outer ring upper end surface 4, an outer ring lower end surface 23 and an outer ring inner end surface 28; the outer ring upper end surface 4 and the outer ring lower end surface 23 are both provided with a stepped groove structure, and the outer ring inner end surface 28 is provided with an outer ring inner end surface upper annular groove 30 and an outer ring inner end surface lower annular groove 29; the inner ring 13 comprises an inner ring upper end surface 11, an inner ring lower end surface 23 and an inner ring outer end surface 15; an upper annular groove 16 and a lower annular groove 20 are formed in the outer end face 15 of the inner ring; the inner ring upper end surface 11 and the inner ring lower end surface 23 are respectively provided with an inner ring upper end surface annular groove 14 and an inner ring lower end surface annular groove 32; outer-layer sealing rings 10 are arranged between the inner ring upper end surface annular groove 14 and the inner ring lower end surface annular groove 32 and the stepped groove structure; and an inner-layer sealing ring 18 is arranged between the inner ring outer end face upper annular groove 16 and the inner ring outer end face lower annular groove 20 and the outer ring upper annular groove 30 and the outer ring lower annular groove 29 respectively.
Wherein, the inner end surface 28 of the outer ring is also provided with an arc structure for mounting the balls and the retainer; and the outer end surface 15 of the inner ring is provided with an arc structure for mounting the balls and the retainer, which is matched with the inner end surface 28 of the outer ring.
The outer ring upper annular groove 30 and the outer ring lower annular groove 29 are symmetrically arranged along an arc structure.
The step groove structure formed on the upper end surface 4 of the outer ring is sequentially an outer ring upper end surface high groove 9, an outer ring upper end surface low groove 8 and an outer ring upper end surface middle groove 7, and the outer ring upper end surface middle groove 7 is close to the inner end surface 28 of the outer ring; the stepped groove structure formed in the outer ring lower end surface 23 is sequentially a high groove 27 of the outer ring lower end surface, a low groove 26 of the outer ring lower end surface and a middle groove 25 of the outer ring lower end surface, and the middle groove 25 of the outer ring lower end surface is close to the inner end surface 28 of the outer ring. The inner sealing ring 18 arranged in the annular groove 16 on the outer end face of the inner ring and the annular groove 20 on the lower end face of the outer end face of the inner ring are positioned by a piston ring 17. The outer-layer sealing ring 10 arranged in the inner ring upper end surface annular groove 14 and the inner ring lower end surface annular groove 32 is pressed and positioned through the inner ring upper end surface annular gasket 12. An outer sealing ring 10 arranged in the stepped groove structure is in clearance fit with an annular gasket 5 on the upper end face of the outer ring.
The lower end face of one end of the outer sealing ring 10 is attached to the middle groove 7 of the upper end face of the outer ring, the annular gasket 5 of the upper end face of the outer ring is fixed in the high groove 9 of the upper end face of the outer ring through a fixing screw 6, and the lower end face of the annular gasket 5 of the upper end face of the outer ring is positioned above the outer sealing ring 10; the middle part of the outer sealing ring 10 is provided with a W-shaped extension, so that when the inner ring 13 and the outer ring 3 are in extreme offset positions, the movable end of the outer sealing ring 10 is always positioned in the lower groove 8 of the upper end surface of the outer ring and the middle groove 7 of the upper end surface of the outer ring; the other end of the outer-layer sealing ring 10 is arranged in an annular groove 14 on the upper end face of the inner ring, and the fixing screw 6 penetrates through the outer-layer sealing ring 10 to fix the outer-layer sealing ring 10 in the annular groove 14 on the upper end face of the inner ring; the middle part of the inner layer sealing ring 18 is provided with a W-shaped extension.
With reference to fig. 1 to 6, a novel double-layer dustproof and leakproof sealed turntable bearing comprises the following steps:
step one, step-shaped grooves are processed on the upper end surface 4 and the lower end surface 23 of the outer ring, and each step-shaped groove consists of a middle groove, a lower groove and a high groove. An outer ring inner end surface lower groove 29 and an outer ring inner end surface upper groove 30 are machined on an outer ring inner end surface 28, an inner ring outer end surface upper annular groove 16 and an inner ring outer end surface lower annular groove 20 are machined on an inner ring outer end surface 15, the height of the inner ring outer end surface upper annular groove 16 and the inner ring outer end surface lower annular groove 20 is smaller than the sum of the thickness of an inner ring sealing ring 18 and a piston ring 17, and an inner ring upper end surface annular groove 14 and an inner ring lower end surface annular groove 32 are machined on an inner ring upper end surface 11 and an inner ring lower end surface 21; the middle area of the sealing ring is of a W-shaped structure, so that the other end of the sealing ring is always positioned in the groove when the inner ring and the outer ring of the turntable bearing are subjected to heavy load and generate large deviation.
Step two, one end of an inner sealing ring 18 is arranged on an annular groove 16 on the outer end face of the inner ring and a lower annular groove 20 on the outer end face of the inner ring, a piston ring 17 is arranged in the annular groove 16 on the outer end face of the inner ring and the lower annular groove 20 on the outer end face of the inner ring, after the piston ring 17 is arranged, the edge of an outer ring contacts with an inner end face 28 on an outer ring of the turntable bearing, the piston ring 17 is ensured to contact with the inner end face 28 of the outer ring at the moment when the inner sealing ring 18 is tightly pressed in a working state, the other end of the inner sealing ring 18 is arranged on a lower annular groove 29 on the inner end face of the outer ring and an upper annular groove 30 on the inner end face of the outer ring, the thickness of the lower annular groove 29 on the inner end face of the outer ring and the upper annular groove 30 on the inner end face of the outer ring are the same as the thickness of the inner sealing ring 18, and the inner annular groove 29 on the inner end face of the outer ring is allowed to rotate;
thirdly, one end of an outer sealing ring 10 is arranged in an annular groove 14 on the upper end surface of the inner ring and an annular groove 32 on the lower end surface of the inner ring, a fixing screw 6 penetrates through an annular gasket 12 on the upper end surface of the inner ring and the outer sealing ring 10 to fix the two on the upper end surface 11 of the inner ring, the fixing screw 6 penetrates through the annular gasket 32 on the lower end surface of the inner ring and the outer sealing ring 10 to fix the two on the lower end surface 21 of the inner ring, the positions of the annular gasket on the lower end surface of the inner ring and the outer sealing ring 10 on the lower end surface 21 of the inner ring are ensured to be unchanged, the other end of the outer sealing ring 10 is arranged in a middle groove 7 on the upper end surface of the outer ring and a low groove 8 on the upper end surface of the outer ring, an annular gasket 5 on the upper end surface of the outer ring is arranged above the outer sealing ring 10, the fixing screw penetrates through the annular gasket 5 on the upper end surface of the outer ring to fix the annular gasket in a high groove 9 on the upper end surface of the outer ring, and the annular gasket 5 on the upper end surface of the outer ring is ensured to be unchanged, the thickness of the outer ring upper end face annular gasket 5 is the same as the depth of the outer ring upper end face high groove 9, the lower end of the outer ring upper end face annular gasket 5 is contacted with the outer layer sealing ring 10, the other end of the outer layer sealing ring 10 can rotate in the stepped groove, and the outer layer sealing ring 10, the outer ring lower end face annular gasket 24 and the inner ring lower end face annular gasket 31 are installed in the same way;
the outer ring upper end face 5 is provided with a stepped groove, the outer ring upper end face middle groove 7, the outer ring upper end face low groove 8 and the outer ring upper end face high groove 9 are distributed, the lower end face of one end of the outer sealing ring 10 is attached to the outer ring upper end face middle groove 7 and is positioned in the outer ring upper end face low groove 8, after installation, the height of the outer sealing ring is flush with the lower end face of the outer ring upper end face high groove 9, the outer ring upper end face annular gasket 5 is fixed in the outer ring upper end face high groove 9 through a fixing screw 6, and the inner ring upper end face annular gasket 12 is arranged above the outer sealing ring 10; the middle part of the outer sealing ring 10 is provided with W-shaped expansion amount, so that when the inner and outer rings are in extreme offset positions, the movable end of the sealing ring is always positioned in the lower groove of the stepped groove; and installing the other end of the outer sealing ring 10 and an annular gasket 12 on the upper end surface of the inner ring, and fixing screws penetrate through the outer sealing ring and the annular gasket to fix the outer sealing ring and the annular gasket in a groove 14 on the upper end surface of the inner ring.
An inner sealing ring 18 and a piston ring 17 are arranged in an upper annular groove 16 on the outer end surface of the inner ring and a lower annular groove 20 on the outer end surface of the inner ring, one end of the inner sealing ring 18 is arranged in the upper annular groove 16 on the outer end surface of the inner ring and the lower annular groove 20 on the outer end surface of the inner ring, the piston ring 17 is arranged close to the upper end surface, the size of the piston ring is larger than the size of the upper annular groove 16 on the outer end surface of the inner ring and the lower annular groove 20 on the outer end surface of the inner ring, the width of the piston ring is larger than the distance between the outer end surface 15 of the inner ring and the inner end surface 28 of the outer ring, the outer ring is ensured to be always contacted with the inner end surface 28 of the outer ring, the inner ring of the piston ring is always positioned in the lower annular groove 16 on the outer end surface of the inner ring and the lower annular groove 20 on the outer end surface of the inner ring, the inner sealing ring is arranged in the upper annular groove 16 on the outer end surface of the outer ring and the lower annular groove 30 on the outer end surface of the inner ring in an interference fit manner with the inner sealing ring 18, the height of the annular groove is the same as the thickness of the inner-layer sealing ring.
The outer sealing ring 10 and the annular gasket 31 on the lower end face of the inner ring are fixed in the annular groove 32 on the lower end face of the inner ring through the fixing screw 6, the fixed end of the outer sealing ring 10 is lower than the movable end of the outer sealing ring 10, and the lower support structure 22 is fixed on the lower end face 21 of the inner ring by the high-strength bolt 2.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (10)
1. A novel double-layer dustproof leakage-proof sealed turntable bearing comprises an outer ring (3) and an inner ring (13), and is characterized in that after the outer ring (3) and the inner ring (13) are installed together, the upper end surface (11) of the inner ring is lower than the upper end surface (4) of the outer ring, and the lower end surface (21) of the inner ring is lower than the lower end surface (23) of the outer ring; outer-layer sealing rings (10) are arranged at two ends of the joint of the outer ring (3) and the inner ring (13) in the vertical direction, and an inner-layer sealing ring (18) is arranged in the middle of the joint.
2. The new double-layer dust-and-leakage-proof sealed slewing bearing according to claim 1, wherein the outer ring (3) comprises an outer ring upper end surface (4), an outer ring lower end surface (23) and an outer ring inner end surface (28); step groove structures are formed in the upper end face (4) of the outer ring and the lower end face (23) of the outer ring, and an annular groove (30) in the inner end face of the outer ring and a lower annular groove (29) in the inner end face of the outer ring are formed in the inner end face (28) of the outer ring; the inner ring (13) comprises an inner ring upper end surface (11), an inner ring lower end surface (23) and an inner ring outer end surface (15); an upper annular groove (16) and a lower annular groove (20) are formed in the outer end face (15) of the inner ring; an inner ring upper end surface annular groove (14) and an inner ring lower end surface annular groove (32) are respectively formed in the inner ring upper end surface (11) and the inner ring lower end surface (23); outer-layer sealing rings (10) are arranged between the inner ring upper end surface annular groove (14) and the inner ring lower end surface annular groove (32) and the stepped groove structure; and an inner-layer sealing ring (18) is arranged between the upper annular groove (16) on the outer end surface of the inner ring and the lower annular groove (20) on the outer end surface of the inner ring and between the upper annular groove (30) on the inner end surface of the outer ring and the lower annular groove (29) on the inner end surface of the outer ring respectively.
3. The novel double-layer dustproof and leakproof sealed turntable bearing according to claim 2, wherein the inner end surface (28) of the outer ring is further provided with an arc-shaped structure for mounting balls and a retainer; and the outer end surface (15) of the inner ring is provided with an arc structure which is matched with the inner end surface (28) of the outer ring and is used for mounting the balls and the retainer.
4. The new double layer dust-proof leakage-proof sealed slewing bearing according to claim 2, wherein the upper annular groove (30) on the inner end surface of the outer ring and the lower annular groove (29) on the inner end surface of the outer ring are symmetrically arranged along an arc structure.
5. The novel double-layer dustproof and leakproof sealed turntable bearing according to claim 2, wherein the stepped groove structure formed on the upper end surface (4) of the outer ring is an outer ring upper end surface high groove (9), an outer ring upper end surface low groove (8) and an outer ring upper end surface middle groove (7) in sequence, and the outer ring upper end surface middle groove (7) is close to the inner end surface (28) of the outer ring; the step groove structure that sets up on terminal surface (23) under the outer lane is terminal surface high groove (27) under the outer lane, terminal surface low groove (26) and terminal surface mesolot (25) under the outer lane in proper order, and terminal surface mesolot (25) are close to interior terminal surface (28) of outer lane under the outer lane.
6. The new double-layer dustproof leakproof sealed slewing bearing according to claim 2, wherein the inner-layer seal ring (18) arranged in the annular groove (16) on the outer end face of the inner ring and the annular groove (20) below the outer end face of the inner ring are positioned by the piston ring (17).
7. The new double layer dustproof and leakproof sealed slewing bearing according to claim 2, wherein the outer seal ring (10) arranged in the inner ring upper end surface annular groove (14) and the inner ring lower end surface annular groove (32) is in clearance fit with the inner ring upper end surface annular gasket (12).
8. The novel double-layer dustproof and leakproof sealed slewing bearing according to claim 2, wherein the outer sealing ring (10) arranged in the stepped groove structure is in clearance fit with the annular gasket (5) on the upper end face of the outer ring.
9. The novel double-layer dustproof and leakproof sealed slewing bearing according to claim 5, wherein the lower end face of one end of the outer sealing ring (10) is fitted with the middle groove (7) of the upper end face of the outer sealing ring, the annular gasket (5) of the upper end face of the outer ring is fixed in the high groove (9) of the upper end face of the outer ring through a fixing screw (6), and the lower end face of the annular gasket (5) of the upper end face of the outer ring is positioned above the outer sealing ring (10); the middle part of the outer sealing ring (10) is provided with a W-shaped extension, so that when the inner ring (13) and the outer ring (3) are in extreme offset positions, the movable end of the outer sealing ring (10) is always positioned in the lower groove (8) of the upper end surface of the outer ring and the middle groove (7) of the upper end surface of the outer ring; the other end of the outer layer sealing ring (10) is arranged in the annular groove (14) on the upper end face of the inner ring, and the fixing screw (6) penetrates through the outer layer sealing ring (10) to fix the outer layer sealing ring (10) in the annular groove (14) on the upper end face of the inner ring.
10. The new double layer dustproof and leakproof sealed slewing bearing according to claim 2, wherein the middle part of the inner sealing ring (18) is provided with a W-shaped extension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110837240.7A CN113586600B (en) | 2021-07-23 | 2021-07-23 | Novel double-layer dustproof and leakproof sealed turntable bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110837240.7A CN113586600B (en) | 2021-07-23 | 2021-07-23 | Novel double-layer dustproof and leakproof sealed turntable bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113586600A true CN113586600A (en) | 2021-11-02 |
| CN113586600B CN113586600B (en) | 2022-07-22 |
Family
ID=78249794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110837240.7A Active CN113586600B (en) | 2021-07-23 | 2021-07-23 | Novel double-layer dustproof and leakproof sealed turntable bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113586600B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201121657Y (en) * | 2007-07-07 | 2008-09-24 | 无锡立达齿轮制造有限公司 | Pivotal bearing |
| CN101858313A (en) * | 2010-06-10 | 2010-10-13 | 北京京冶轧机轴承制造有限公司 | Wind generating set and variable blade bearing thereof |
| JP2012159114A (en) * | 2011-01-31 | 2012-08-23 | Ntn Corp | Sealing structure for turning bearing |
| JP2016223460A (en) * | 2015-05-27 | 2016-12-28 | Ntn株式会社 | Seal structure of slewing bearing and slewing bearing |
| CN206563037U (en) * | 2017-01-12 | 2017-10-17 | 上海福帝堡密封技术有限公司 | A kind of new many lip wind-powered turntable bearing sealing rings |
| CN210919840U (en) * | 2019-07-03 | 2020-07-03 | 马鞍山方圆精密机械有限公司 | Double-groove sealing slewing bearing |
| CN210978197U (en) * | 2019-11-21 | 2020-07-10 | 洛阳隆达轴承有限公司 | Turntable bearing with grease leakage prevention function |
-
2021
- 2021-07-23 CN CN202110837240.7A patent/CN113586600B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201121657Y (en) * | 2007-07-07 | 2008-09-24 | 无锡立达齿轮制造有限公司 | Pivotal bearing |
| CN101858313A (en) * | 2010-06-10 | 2010-10-13 | 北京京冶轧机轴承制造有限公司 | Wind generating set and variable blade bearing thereof |
| JP2012159114A (en) * | 2011-01-31 | 2012-08-23 | Ntn Corp | Sealing structure for turning bearing |
| JP2016223460A (en) * | 2015-05-27 | 2016-12-28 | Ntn株式会社 | Seal structure of slewing bearing and slewing bearing |
| CN206563037U (en) * | 2017-01-12 | 2017-10-17 | 上海福帝堡密封技术有限公司 | A kind of new many lip wind-powered turntable bearing sealing rings |
| CN210919840U (en) * | 2019-07-03 | 2020-07-03 | 马鞍山方圆精密机械有限公司 | Double-groove sealing slewing bearing |
| CN210978197U (en) * | 2019-11-21 | 2020-07-10 | 洛阳隆达轴承有限公司 | Turntable bearing with grease leakage prevention function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113586600B (en) | 2022-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2014045934A1 (en) | Wind/tidal power generation bearing | |
| US4895458A (en) | Bearings for wind generator rotors | |
| CN101191521A (en) | Centripetal thrust force protection bearing used for magnetic suspension bearing system | |
| CN211423184U (en) | Turntable bearing double-lip sealing mechanism for wind power generation | |
| US9822814B2 (en) | Bearing for combined loads | |
| CN113586600B (en) | Novel double-layer dustproof and leakproof sealed turntable bearing | |
| CN201368124Y (en) | Plain radial bearing used for bridge stay cable | |
| CN2201513Y (en) | Four-point contact thrust ball bearing | |
| CN101413533A (en) | Special structure four-point contact ball bearing | |
| CN215572826U (en) | Life detection formula slewing bearing | |
| CN203570855U (en) | Dust prevention structure for large-bearing-capacity slewing bearing | |
| CN202132384U (en) | Strengthened sealing mixing ceramic self-aligning roller bearing | |
| CN215413215U (en) | Cold quick-witted integral type wheel of ring | |
| CN2648188Y (en) | Metal rubber sealing ring | |
| CN109826956B (en) | Floating double main lip combined sealing ring | |
| CN208281357U (en) | A kind of modularization self-aligning bearing device | |
| CN215567360U (en) | Slewing bearing with modular sealing structure | |
| CN216951633U (en) | Simple and easy universal mill pull rod seal structure | |
| CN220101825U (en) | Novel multi-channel sealing device for slewing bearing | |
| CN213628489U (en) | Waterproof maintenance-free turntable bearing | |
| CN111288088A (en) | Wind generating set becomes oar bearing and protection sealing washer thereof | |
| CN211525337U (en) | Cross full roller bearing with ball filling gap on end surface of inner ring | |
| CN209838975U (en) | Composite sealing structure of rotary support | |
| CN213145114U (en) | Split type low-abrasion retainer for wind power variable pitch turntable bearing | |
| CN215634504U (en) | Multi-angle aligning multiple protection bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |