CN111536163A - Bearing device capable of automatically locking and positioning - Google Patents

Bearing device capable of automatically locking and positioning Download PDF

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Publication number
CN111536163A
CN111536163A CN202010263680.1A CN202010263680A CN111536163A CN 111536163 A CN111536163 A CN 111536163A CN 202010263680 A CN202010263680 A CN 202010263680A CN 111536163 A CN111536163 A CN 111536163A
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CN
China
Prior art keywords
bearing
ring
locking
bearing seat
angle
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Pending
Application number
CN202010263680.1A
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Chinese (zh)
Inventor
汤新红
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Yueqing Zhige Electronic Technology Co ltd
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Yueqing Zhige Electronic Technology Co ltd
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Application filed by Yueqing Zhige Electronic Technology Co ltd filed Critical Yueqing Zhige Electronic Technology Co ltd
Priority to CN202010263680.1A priority Critical patent/CN111536163A/en
Publication of CN111536163A publication Critical patent/CN111536163A/en
Pending legal-status Critical Current

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    • 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
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
    • 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
    • F16C33/583—Details of specific parts of races
    • 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
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/073—Fixing them on the shaft or housing with interposition of an element between shaft and inner race ring
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/62—Positive connections with pins, bolts or dowels
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/70—Positive connections with complementary interlocking parts
    • F16C2226/74—Positive connections with complementary interlocking parts with snap-fit, e.g. by clips
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/70—Positive connections with complementary interlocking parts
    • F16C2226/76—Positive connections with complementary interlocking parts with tongue and groove or key and slot

Abstract

The invention discloses an automatic locking and positioning bearing device, which comprises a bearing and a bearing seat, wherein the bearing comprises a bearing outer ring, a bearing inner ring and a rolling body, the bearing outer ring and the bearing inner ring are coaxially arranged, the rolling body is arranged between the bearing outer ring and the bearing inner ring, the inner surface of the bearing inner ring is provided with a locking ring, the outer surface of the bearing outer ring is provided with a limiting groove, and the bearing seat is provided with a limiting bulge matched with the limiting groove. The bearing outer ring and the bearing seat are axially positioned by the annular limiting groove and the annular limiting protrusion, the bearing outer ring and the bearing seat are prevented from rotating relatively by the mutual matching of the first sawteeth and the second sawteeth and the mutual matching of the positioning protrusions and the positioning openings, and the shaft is locked by the locking ring through the mutual matching of the bearing inner ring, the locking ring and the circular ring, so that the stable rotation of the shaft is ensured.

Description

Bearing device capable of automatically locking and positioning
Technical Field
The invention relates to the field of mechanical parts, in particular to a bearing device capable of automatically locking and positioning.
Background
The bearing is a part for supporting the mechanical rotating body and reducing the friction coefficient in the movement process of the mechanical rotating body. The bearing is at the in-process of assembly, often has the clearance between bearing and axle, the bearing frame, has the clearance to lead to the rotation of axle unstable between bearing and the axle, has the clearance between bearing and the bearing frame, probably can make to take place relative rotation and slip between bearing and the bearing frame, leads to the poor stability of bearing.
As the applicant has sought to provide a bearing arrangement which enables automatic locking of the shaft and axial positioning of the bearing.
Disclosure of Invention
The invention aims to provide an automatic locking and positioning bearing device to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the bearing device comprises a bearing and a bearing seat, wherein the bearing comprises a bearing outer ring, a bearing inner ring and a rolling body, the bearing outer ring and the bearing inner ring are coaxially arranged, the rolling body is arranged between the bearing outer ring and the bearing inner ring, a locking ring is arranged on the inner surface of the bearing inner ring, a limiting groove is arranged on the outer surface of the bearing outer ring, and a limiting bulge matched with the limiting groove is arranged on the inner surface of the bearing seat.
Through the technical scheme, the locking ring enables the bearing inner ring to clamp the shaft, so that the bearing inner ring and the shaft are prevented from moving relatively, and the abrasion between the bearing inner ring and the shaft is reduced; bearing inner race surface is provided with spacing recess, the bearing frame internal surface is provided with spacing arch, compare and be provided with spacing arch in bearing inner race surface, the bearing frame internal surface is provided with spacing recess, the bearing frame can needn't reserve thickness for spacing recess, can make the bearing frame become a little bit thinner, the materials of bearing frame have been practiced thrift, the cost is reduced, spacing arch and spacing recess cooperation are used, the axial displacement of restriction bearing, prevent that the bearing inner race from rocking in the axis direction of bearing frame, stability in the bearing frame when improving the bearing rotation.
As preferred scheme, the bearing frame is split type structure, it includes first bearing frame and second bearing frame, all be provided with engaging lug and spread groove on first bearing frame and the second bearing frame, the engaging lug of first bearing frame is the same with the engaging lug structure of second bearing frame, the spread groove of first bearing frame is the same with the spread groove structure of second bearing frame, be provided with the bolt hole on engaging lug and the spread groove, the engaging lug of first bearing frame uses with the spread groove cooperation of second bearing frame, the engaging lug of second bearing frame uses with the spread groove cooperation of first bearing frame.
Through above-mentioned technical scheme, the bearing frame is split type structure, is convenient for dismantle and maintains the bearing frame, and when connecting fixed first bearing frame and second bearing frame, the bolt passes the bolt hole of first bearing frame engaging lug and second bearing frame spread groove and fixes, and the bolt passes the bolt hole of second bearing frame engaging lug and first bearing frame spread groove and fixes, utilizes the bolt directly to connect fixedly, and is simple and convenient.
Preferably, the inner surface of the bearing inner ring is provided with two locking rings, the two locking rings are respectively arranged at two ends of the inner surface of the bearing inner ring, the cross sections of the locking rings are isosceles triangles, each locking ring comprises a locking ring tip and a locking ring inclined surface, arc-shaped rubber is arranged between the locking ring tip and the inner surface of the bearing inner ring, the inner surface of the bearing inner ring is also provided with a ring, the ring is provided with a ring inclined surface matched with the locking ring inclined surface, and the ring is in threaded connection with the inner.
Through the technical scheme, the two locking rings are respectively arranged at the two ends of the inner surface of the bearing inner ring, so that the bearing inner ring is clamped more firmly when the shaft is clamped, the pressure of the locking rings is prevented from being gathered at a certain place of the shaft, the pressure of the locking rings borne by the shaft is more uniform, the arc rubber is arranged between the tip of the locking rings and the inner surface of the bearing inner ring, the tip of the locking rings can be prevented from rubbing with the bearing inner ring, the locking rings and the bearing inner ring are prevented from being worn, and the service life of the locking rings and the bearing inner ring is prolonged; the ring is in threaded connection with the inner surface of the bearing inner ring, the ring is in interference fit with the bearing inner ring, the ring is retracted into the bearing inner ring by rotating the ring, because the ring is in interference fit with the bearing inner ring, the bearing inner ring has extrusion force on the ring, the inclined surface of the ring is matched with the inclined surface of the locking ring for use, and the ring applies the extrusion force to the inclined surface of the locking ring through the inclined surface of the ring; the locking ring comprises locking ring inclined planes, the cross section of the locking ring is an isosceles triangle, the locking ring inclined planes are positioned on two sides of the locking ring, the inclined angles and the inclined planes of the locking ring inclined planes on two sides are the same, so that the resultant force of the extrusion forces of the locking ring inclined planes on two sides is directed to the axial lead direction, and the resultant force is required to be as large as possible, so that the locking ring can lock the shaft.
As the preferred scheme, the limiting groove is an annular limiting groove, the limiting protrusion is an annular limiting protrusion, first sawteeth are arranged on the limiting groove, an angle between two adjacent teeth of the first sawteeth is an angle a, the angle of the angle a is 60-90 degrees, and second sawteeth matched with the first sawteeth are arranged on the limiting protrusion.
According to the technical scheme, the limiting groove and the limiting protrusion which have the effect of limiting the axial displacement of the bearing are respectively arranged as the annular limiting groove and the annular limiting protrusion, so that the limiting groove and the limiting protrusion at one position are worn, namely the sawteeth on the first sawteeth and the second sawteeth are worn, and when the limiting effect cannot be achieved, the limiting grooves and the limiting protrusions at other positions still have the limiting effect; besides the limiting function in the axial direction, the first sawteeth and the second sawteeth can also prevent the relative rotation of the bearing seat and the bearing outer ring. The angle between two adjacent teeth of the first sawtooth is an angle a, and the angle a between two adjacent teeth of the first sawtooth is an acute angle if the bearing seat and the bearing outer ring do not rotate relatively, but the sawtooth is too sharp if the angle of the angle a is too small, so that the abrasion of the sawtooth is accelerated, the service lives of the bearing seat and the bearing outer ring are greatly shortened, and the angle range of the angle a is 60-70 degrees.
Preferably, the connecting groove is provided with a third sawtooth, an angle between two adjacent teeth of the third sawtooth is an angle b, the angle b is 120-130 degrees, and the connecting lug is provided with a fourth sawtooth matched with the third sawtooth.
Through the technical scheme, the first bearing seat and the second bearing seat can be positioned through the bolt, and can also be positioned through the matching of the third saw tooth and the fourth saw tooth on the connecting groove, and the third saw tooth and the fourth saw tooth are matched with each other, so that the pressure of the bolt and the bolt hole when the bearing seat is fixed is reduced to a certain extent, the abrasion between the bolt and the bolt hole is reduced, and the service life of the bolt and the bolt hole is prolonged; and the angle between two adjacent teeth of the first sawtooth, namely the angle b, is not suitable for being too small, on one hand, the first bearing seat and the second bearing seat are connected and fixed through bolts and bolt holes, on the other hand, if the angle b is too small, the sawtooth can be too sharp, the abrasion of the sawtooth is accelerated, the service life of the bearing seat is shortened, the angle b is also not suitable for being too large, and if the angle b is too large, the pressure of the bolts and the bolt holes on fixing the bearing seats cannot be reduced, so that the angle range of the angle b is selected to be 120 plus 130 degrees, the effects of reducing the pressure and positioning can be achieved, and the abrasion is not easily caused.
Preferably, the locking ring is provided with a notch, the notch is provided with a rubber band, and the width of the rubber band is equal to the width of the locking ring.
Through the technical scheme, the locking ring is provided with the notch, so when the locking ring is subjected to resultant force of the circular ring pointing to the axis, the locking ring is reduced, and the shaft is clamped by the inner ring of the bearing; the elastic band is arranged at the notch, and is in a stretching state in an initial state, and the elastic band has elasticity, and the elastic band in the stretching state needs to recover the elasticity, so that the elastic band has elasticity for contracting the locking ring, the elastic force enables the locking ring to be further contracted, and the bearing further clamps the shaft.
As preferred scheme, the one end of bearing inner race is provided with the location arch, is provided with the location opening that the protruding cooperation of location was used on first bearing frame and the second bearing frame.
Through the technical scheme, the positioning protrusion and the positioning opening are matched for use, on one hand, the bearing outer ring and the bearing seat do not rotate relatively, the dislocation between the bearing outer ring and the bearing seat is prevented, the sliding friction between the bearing outer ring and the bearing seat is reduced, and the abrasion between the bearing outer ring and the bearing seat is reduced, on the other hand, after the bearing outer ring and the bearing seat are assembled for the first time, the sawteeth in the first sawteeth and the sawteeth in the second sawteeth pass through the running-in period, so that the effects of mutual coordination and tight fit are achieved, the fit between the bearing seat and the bearing outer ring is more stable, when the bearing outer ring and the bearing seat are disassembled and then are assembled again, if the positioning protrusion and the positioning opening are not arranged, the sawteeth in the first sawteeth and the sawteeth in the second sawteeth need to go through the running-in period again, or the first, the matching effect of the bearing seat and the bearing outer ring is influenced, so that the limiting effect of the first sawteeth and the second sawteeth is influenced.
Preferably, the positioning opening of the first bearing seat is different from the positioning opening of the second bearing seat in shape, and the positioning opening is rectangular, trapezoidal or circular arc.
Through above-mentioned technical scheme, because first bearing frame and second bearing frame are structurally very similar, so set up the location open-ended shape of first bearing frame and the location open-ended shape of second bearing frame into different shapes for when bearing inner race and bearing frame are dismantled and are assembled again, the sawtooth in the second sawtooth that the sawtooth in the first sawtooth corresponds is the sawtooth of mutually supporting when first time the assembly uses, has guaranteed that bearing inner race and bearing frame carry out good cooperation.
Preferably, the isosceles triangle of the cross section of the locking ring is an obtuse triangle, and the angle of the obtuse angle is 150 and 160 degrees.
Through the technical scheme, the locking ring is arranged on the inner surface of the bearing inner ring, the use of the locking ring should not influence the use of the bearing inner ring, so the thickness of the locking ring needs to be designed to be thinner, under the condition of the same thickness, the larger the angle of the tip of the locking ring is, the larger the contact area between the locking ring and the shaft is, the more uniform the pressure of the locking ring to the shaft is, and the better the effect of the locking ring on the shaft is, therefore, an isosceles triangle is selected as an obtuse triangle, but the obtuse angle of the obtuse triangle cannot be too large, if the obtuse angle is too large, the resultant force of the locking ring, which points to the shaft axis, on two sides is reduced, the force of the locking ring for locking the shaft is reduced, the effect of the locking ring for locking the shaft is weakened, and.
Compared with the prior art, the invention has the beneficial effects that: the bearing outer ring and the bearing seat are axially positioned by the annular limiting groove and the annular limiting protrusion, the bearing outer ring and the bearing seat are prevented from rotating relatively by the mutual matching of the first sawteeth and the second sawteeth and the mutual matching of the positioning protrusions and the positioning openings, and the shaft is locked by the locking ring through the mutual matching of the bearing inner ring, the locking ring and the circular ring, so that the stable rotation of the shaft is ensured. The device has simple structure and wide application range.
Drawings
FIG. 1 is a schematic structural diagram of an automatic locking and positioning bearing device according to the present invention;
FIG. 2 is a cross-sectional view of an automatic locking and positioning bearing device of the present invention;
FIG. 3 is a schematic structural diagram of a bearing of an automatic locking and positioning bearing device according to the present invention;
FIG. 4 is a schematic structural diagram of a first bearing seat or a second bearing seat of an automatic locking and positioning bearing device according to the present invention;
FIG. 5 is a schematic view of the connection of the third saw tooth and the fourth saw tooth of the automatic locking and positioning bearing device of the present invention;
fig. 6 is an enlarged schematic view of the bearing device of the present invention at the position B.
In the figure: 1-bearing, 2-first bearing seat, 3-second bearing seat, 4-bearing outer ring, 5-rolling body, 6-bearing inner ring, 7-ring, 8-locking ring, 9-rubber band, 10-arc rubber, 11-positioning opening, 12-positioning protrusion, 13-limiting protrusion, 13 a-second sawtooth, 14-connecting lug, 14 a-fourth sawtooth, 15-connecting groove, 15 a-third sawtooth, 16-limiting groove, 16 a-first sawtooth, angle a-angle between two adjacent teeth of first sawtooth, and angle b-angle between two adjacent teeth of third sawtooth.
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.
A bearing device capable of automatically locking and positioning is disclosed, as shown in figure 1, the bearing device comprises a bearing 1 and a bearing seat, the bearing 1 comprises a bearing outer ring 4, a bearing inner ring 6 and a rolling body 5, the bearing outer ring 4 and the bearing inner ring 6 are coaxially arranged, the rolling body 5 is arranged between the bearing outer ring 4 and the bearing inner ring 6, a locking ring 8 is arranged on the inner surface of the bearing inner ring 6, a limiting groove 16 is arranged on the inner surface of the bearing outer ring 4, and a limiting protrusion 13 matched with the limiting groove 16 for use is arranged on the outer surface of the.
Through the technical scheme, the locking ring 8 enables the bearing inner ring 6 to clamp the shaft tightly, relative movement between the bearing inner ring 6 and the shaft is prevented, abrasion between the bearing inner ring 6 and the shaft is reduced, the outer surface of the bearing outer ring 4 is provided with the limiting groove 16, the inner surface of the bearing seat is provided with the limiting protrusion 13, compared with the situation that the outer surface of the bearing outer ring 4 is provided with the limiting protrusion 13, the inner surface of the bearing seat is provided with the limiting groove 16, the thickness of the limiting groove 16 does not need to be reserved for the bearing seat, the bearing seat can be made to be slightly thinner, materials of the bearing seat are. Spacing arch 13 and spacing recess 16 cooperation are used, and the axial displacement of restriction bearing prevents that bearing inner race 4 from rocking on the axis direction of bearing frame, improves the stability of bearing 1 at the bearing frame internal rotation.
The bearing frame is split type structure, it includes first bearing frame 1 and second bearing frame 2, all be provided with engaging lug 14 and spread groove 15 on first bearing frame 1 and the second bearing frame 2, the engaging lug 14 of first bearing frame 1 is the same with the engaging lug 14 structure of second bearing frame 2, the spread groove 15 of first bearing frame 1 is the same with the spread groove 15 structure of second bearing frame 2, be provided with the bolt hole on engaging lug 14 and the spread groove 15, the engaging lug 14 of first bearing frame 1 uses with the spread groove 15 cooperation of second bearing frame 2, the engaging lug 14 of second bearing frame 2 uses with the spread groove 15 cooperation of first bearing frame 1.
Through above-mentioned technical scheme, the bearing frame is split type structure, is convenient for dismantle and maintains the bearing frame, when first bearing frame 1 of fixed connection and second bearing frame 2, passes the engaging lug 14 of first bearing frame 1 and fixes with the bolt hole of the spread groove 15 of second bearing frame 2, passes the engaging lug 14 of second bearing frame 2 and fixes with the bolt hole of the spread groove 15 of first bearing frame 1 with the bolt, utilizes the bolt directly to connect fixedly, and is simple and convenient.
As shown in fig. 2, two locking rings 8 are arranged on the inner surface of the bearing inner ring 6, the two locking rings 8 are respectively arranged at two ends of the inner surface of the bearing inner ring 6, the cross section of each locking ring 8 is an isosceles triangle, each locking ring 8 comprises a locking ring tip and a locking ring inclined surface 8a, an arc-shaped rubber 10 is arranged between the locking ring tip and the inner surface of the bearing inner ring 6, a circular ring 7 is further arranged on the inner surface of the bearing inner ring 6, the circular ring 7 is provided with a circular ring inclined surface matched with the locking ring inclined surface 8a, and the circular.
Through the technical scheme, the two locking rings 8 are respectively arranged at the two ends of the inner surface of the bearing inner ring 6, so that the bearing inner ring 6 is clamped more firmly when clamping a shaft, the pressure of the locking rings 8 is prevented from being gathered at a certain place of the shaft, the pressure of the locking rings 8 on the shaft is more uniform, the arc-shaped rubber 10 is arranged between the tips of the locking rings and the inner surface of the bearing inner ring 6, the tips of the locking rings and the bearing inner ring 6 can be prevented from being rubbed, the locking rings 8 and the bearing inner ring 6 are prevented from being worn, and the service lives of the locking rings 8 and the bearing inner ring 6; the circular ring 7 is in threaded connection with the inner surface of the bearing inner ring 6, the circular ring 7 is in interference fit with the bearing inner ring 6, the circular ring 7 is retracted into the bearing inner ring 6 by rotating the circular ring 7, because the circular ring 7 is in interference fit with the bearing inner ring 6, the bearing inner ring 6 applies extrusion force to the circular ring 7, the inclined surface of the circular ring 7 is matched with the inclined surface of the locking ring 8 for use, and the circular ring 7 applies the received extrusion force to the inclined surface 8a of the locking ring through the inclined surface of the circular ring 7; the locking ring 8 comprises locking ring inclined planes 8a, the cross section of the locking ring 8 is an isosceles triangle, the locking ring inclined planes 8a are positioned on two sides of the locking ring 8, the inclination angle and the size of the inclined planes of the locking ring inclined planes 8a on two sides are the same, so that the resultant force of the extrusion force of the circular ring 7 on the locking ring inclined planes 8a on two sides is in the direction of the axis, and the resultant force is required to be as large as possible, so that the locking ring 8 can lock the shaft.
As shown in fig. 3-6, the limiting groove 16 is an annular limiting groove 16, the limiting protrusion 13 is an annular limiting protrusion 13, the limiting groove 16 is provided with a first sawtooth 16a, an angle between two adjacent teeth of the first sawtooth 16a is an angle a, the angle a is 60-90 degrees, and the limiting protrusion 13 is provided with a second sawtooth 13a matched with the first sawtooth 16 a.
Through the technical scheme, the limiting groove 16 and the limiting protrusion 13 which have the effect of limiting the axial displacement of the bearing 1 are respectively arranged as the annular limiting groove 16 and the annular limiting protrusion 13, so that the limiting groove 16 and the limiting protrusion 13 at a certain position are worn, namely, sawteeth on the first sawteeth 16a and the second sawteeth 13a are worn, and when the limiting effect cannot be achieved, the limiting grooves 16 and the limiting protrusions 13 at other positions still have the limiting effect; the first serrations 16a and the second serrations 13a can prevent relative rotation of the bearing housing and the bearing outer race 4, in addition to a limit action in the axial direction. The angle between two adjacent teeth of the first saw tooth 16a is an angle a, and in order to ensure that the bearing seat and the bearing outer ring 4 do not rotate relatively, the angle between two adjacent teeth of the first saw tooth 16a, namely the angle a, should be as small as possible, so the angle a is selected to be an acute angle, but if the angle of the angle a is too small, the saw tooth is too sharp, the abrasion of the saw tooth is accelerated, the service life of the bearing seat and the bearing outer ring 4 is greatly shortened, and therefore the angle range of the angle a is selected to be 60-70 degrees.
The connecting groove 15 is provided with a third sawtooth 15a, an angle between two adjacent teeth of the third sawtooth 15a is an angle b, the angle b is 120 degrees and 130 degrees, and the connecting lug 14 is provided with a fourth sawtooth 14a matched with the third sawtooth 15 a.
Through the technical scheme, the first bearing seat 1 and the second bearing seat 2 can be positioned through bolts, and also can be positioned through the matching of the third saw teeth 15a and the fourth saw teeth 14a on the connecting groove 15, and the third saw teeth 15a and the fourth saw teeth 14a are matched with each other, so that the pressure of the bolts and bolt holes when the bearing seats are fixed is reduced to a certain extent, the abrasion between the bolts and the bolt holes is reduced, and the service lives of the bolts and the bolt holes are prolonged; and the angle b between two adjacent teeth of the first sawtooth 16a is not suitable for being too small, on one hand, the first bearing seat 1 and the second bearing seat 2 are connected and fixed mainly through bolts and bolt holes, on the other hand, if the angle b is too small, the sawtooth is too sharp, the abrasion of the sawtooth is accelerated, the service life of the bearing seat is shortened, and if the angle b is too large, the pressure of the bolts and the bolt holes on fixing the bearing seat cannot be reduced, so that the angle range of the angle b is selected to be 120-degree and 130-degree, the effects of reducing the pressure and positioning can be achieved, and the abrasion is not easily caused.
The locking ring 8 is provided with a notch, the notch is provided with a rubber band 9, and the width of the rubber band 9 is equal to that of the locking ring 8.
Through the technical scheme, the locking ring 8 is provided with the notch, so when the locking ring 8 is subjected to resultant force of the circular ring 7 pointing to the axis, the locking ring 8 is shrunk, and the bearing inner ring 6 is clamped on the shaft; the rubber band 9 is arranged at the notch, the rubber band 9 is in a stretching state in an initial state, the rubber band 9 has elasticity, and the rubber band 9 in the stretching state needs to recover the elasticity, so that the rubber band 9 has elasticity for enabling the locking ring 8 to contract, the elasticity enables the locking ring 8 to further shrink, and the bearing 1 further clamps the shaft.
One end of the bearing outer ring 4 is provided with a positioning protrusion 12, and the first bearing seat 1 and the second bearing seat 2 are provided with a positioning opening 11 matched with the positioning protrusion 12.
Through the technical scheme, the positioning protrusions and the positioning openings 11 are matched for use, on one hand, the bearing outer ring 4 and the bearing seat do not rotate relatively, the dislocation between the bearing outer ring 4 and the bearing seat is prevented, the sliding friction between the bearing outer ring 4 and the bearing seat is reduced, and the abrasion between the bearing outer ring 4 and the bearing seat is reduced, on the other hand, the saw teeth in the first saw teeth 16a and the saw teeth in the second saw teeth 13a pass through the running-in period after the first assembly and use, so that the effects of mutual coordination and tight fit are achieved, the fit between the bearing seat and the bearing outer ring 4 is more stable, when the bearing outer ring 4 and the bearing seat are disassembled, the assembly is carried out again, if the positioning protrusions 12 and the positioning openings 11 are not arranged, the saw teeth in the first saw teeth 16a and the saw teeth in the second saw teeth 13a possibly need to pass through, or the first sawteeth 16a and the second sawteeth 13a may not be in running-in, which affects the matching effect of the bearing seat and the bearing outer ring 4 and the limiting effect of the first sawteeth 16a and the second sawteeth 13 a.
The positioning opening 11 of the first bearing seat 1 and the positioning opening 11 of the second bearing seat 2 are different in shape, and the shape of the positioning opening 11 is rectangular, trapezoidal or circular arc.
Through the technical scheme, because first bearing frame 1 and second bearing frame 2 are very similar in structure, so set up the shape of the location opening 11 of first bearing frame 1 and the location opening 11 shape of second bearing frame 2 into different shapes, when further making bearing inner race 4 and bearing frame dismantle the back and assemble again, the sawtooth in the corresponding second sawtooth 13a of the sawtooth in the first sawtooth 16a is the sawtooth of mutually supporting when first time assembly uses, guaranteed that bearing inner race 4 and bearing frame carry out good cooperation.
The isosceles triangle of the cross section of the locking ring 8 is an obtuse angle triangle, and the obtuse angle is 150 degrees and 160 degrees.
Through the technical scheme, the locking ring 8 is arranged on the inner surface of the bearing inner ring 6, and the use of the locking ring 8 should not influence the use of the bearing inner ring 6, so that the thickness of the locking ring 8 needs to be designed to be thinner, under the condition of the same thickness, the larger the angle of the tip of the locking ring 8 is, the larger the contact area between the locking ring 8 and the shaft is, the more uniform the pressure of the locking ring 8 to the shaft is, and the better the effect of locking the shaft is, therefore, an isosceles triangle is selected as an obtuse triangle, but the obtuse triangle cannot be too large, if the obtuse angle is too large, the resultant force of the locking ring 8, which is directed to the shaft axis, on two sides is reduced, the force of locking ring 8 to lock the shaft is reduced, the effect of locking ring 8 to tighten the shaft is reduced, and the obtuse angle.
In assembling the bearing device, the rolling elements 5 are first placed between the bearing outer race 4 and the bearing inner race 6, the ring 7 and the locking ring 8 are then rotated into the bearing inner race 6, and finally the first bearing housing 2 and the second bearing housing 3 are fixed to the outside of the bearing.
When the bearing device works, the inclined surfaces 8a of the locking rings at two sides are subjected to resultant force of extrusion force of the circular ring 7, the rubber band 9 has elastic force for enabling the locking rings 8 to contract, and the resultant force enables the locking rings 8 to lock the shaft, so that the shaft can stably rotate.
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 (4)

1. The utility model provides an automatic bearing device of locking location which characterized in that: the bearing device comprises a bearing (1) and a bearing seat, wherein the bearing (1) comprises a bearing outer ring (4), a bearing inner ring (6) and a rolling body (5), the bearing outer ring (4) and the bearing inner ring (6) are coaxially arranged, the rolling body (5) is arranged between the bearing outer ring (4) and the bearing inner ring (6), a locking ring (8) is arranged on the inner surface of the bearing inner ring (6), a limiting groove (16) is arranged on the outer surface of the bearing outer ring (4), and a limiting bulge (13) matched with the limiting groove (16) for use is arranged on the bearing seat; the bearing seat is of a split structure and comprises a first bearing seat (2) and a second bearing seat (3), wherein a connecting lug (14) and a connecting groove (15) are arranged on the first bearing seat (2) and the second bearing seat (3), the connecting lug (14) of the first bearing seat (2) and the connecting lug (14) of the second bearing seat (3) are identical in structure, the connecting groove (15) of the first bearing seat (2) and the connecting groove (15) of the second bearing seat (3) are identical in structure, bolt holes are formed in the connecting lug (14) and the connecting groove (15), the connecting lug (14) of the first bearing seat (2) and the connecting groove (15) of the second bearing seat (3) are matched for use, and the connecting lug (14) of the second bearing seat (3) and the connecting groove (15) of the first bearing seat (2) are matched for use; the inner surface of the bearing inner ring (6) is provided with two locking rings (8), the two locking rings (8) are respectively arranged at two ends of the inner surface of the bearing inner ring (6), the cross section of each locking ring (8) is in an isosceles triangle shape, each locking ring (8) comprises a locking ring tip and a locking ring inclined surface (8 a), arc-shaped rubber (10) is arranged between the locking ring tip and the inner surface of the bearing inner ring (6), the inner surface of the bearing inner ring (6) is also provided with a circular ring (7), the circular ring (7) is provided with a circular ring inclined surface matched with the locking ring inclined surface (8 a), the circular ring (7) is in threaded connection with the inner surface of the bearing inner ring (6), and the circular ring inclined surface is in threaded connection with;
positioning openings (11) are formed in the first bearing seat (2) and the second bearing seat (3), and positioning protrusions (12) matched with the positioning openings (11) are arranged on the bearing outer ring (4); the positioning opening (11) of the first bearing seat (2) and the positioning opening (11) of the second bearing seat (3) are different in shape.
2. An automatic locking and positioning bearing device as claimed in claim 1, wherein: spacing recess (16) are annular spacing recess (16), spacing arch (13) are annular spacing arch (13), be provided with first sawtooth (16 a) on spacing recess (16), the angle between two adjacent teeth of first sawtooth (16 a) is angle a, angle a's angle is 60-70 degrees, be provided with on spacing arch (13) with first sawtooth (16 a) matched with second sawtooth (13 a).
3. An automatic locking and positioning bearing device as claimed in claim 2, wherein: the connecting groove (15) is provided with a third sawtooth (15 a), the angle between two adjacent teeth of the first sawtooth (16 a) is an angle b, the angle b is 120 degrees and 130 degrees, and the connecting lug (14) is provided with a fourth sawtooth (14 a) matched with the third sawtooth (15 a).
4. An automatic locking and positioning bearing device as claimed in claim 3, wherein: the positioning opening (11) is rectangular, trapezoidal or arc-shaped.
CN202010263680.1A 2018-12-20 2018-12-20 Bearing device capable of automatically locking and positioning Pending CN111536163A (en)

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CN202010263680.1A CN111536163A (en) 2018-12-20 2018-12-20 Bearing device capable of automatically locking and positioning
CN201811563915.8A CN109707741B (en) 2018-12-20 2018-12-20 Bearing device capable of automatically locking and positioning

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CN202010263696.2A Pending CN111536164A (en) 2018-12-20 2018-12-20 Bearing device capable of automatically locking and positioning
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CN115126786B (en) * 2022-08-10 2024-04-30 新昌县天拓机械有限公司 Bearing with high-precision mounting auxiliary piece and mounting process thereof

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CN109707741B (en) 2020-04-24
CN111536164A (en) 2020-08-14

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Application publication date: 20200814