CN206144977U - Anti -impact double -row cylinder roller bearing - Google Patents

Abstract

The utility model discloses an anti -impact double -row cylinder roller bearing has solved that bearing inner race a skew phenomenon appears with the axle under the high impact condition. Its technical scheme main points are retaining rings that anti -impact double -row cylinder roller bearing includes bearing inner race, bearing inner race, a plurality of roller and location bearing inner race, bearing inner race, and bearing inner race's lateral wall is equipped with a plurality of teeth of a cogwheel, and the cylindric outer wall that has the bearing inner race in shaft hole is equipped with the raceway of two rings shape, and the roller adorn on the raceway, bearing inner race's shaft hole be equipped with at least one and the shaft hole axis has 70 degrees strip connected in stars to 90 degrees contained angles, and the one end border department that the strip connected in star extended to bearing inner race forms an opening, and the strip connected in star lateral wall that is close to the other end is equipped with at least one arc boss. Thereby the fixed resistant impact toughness that increase bearing of reinforcing bearing inner race with the axle has been reached.

Description

Resistance to impact Biserial cylindrical roller bearing

Technical field

This utility model is related to field of bearings, in particular, is related to one kind and is applied to match somebody with somebody with gear in heavy truck change speed gear box The Biserial cylindrical roller bearing of conjunction.

Background technology

Existing automobile, especially heavy truck, are big bearing and axle and coordinate in change speed gear box, then by gear and bearing fit Install, then by gear and other gear intermeshings, so as to realize the transmission of power, because transmission principle will be with electromotor phase Gear even is engaged with different size of change-speed gearing realizes speed change, and when the gear being connected with electromotor is engaged with change-speed gearing Or the moment for departing from, because the gear being connected with electromotor rotates in high speed, change-speed gearing is static, and Contact can produce phase To impulsive force, the cooperation of change-speed gearing, bearing and axle is affected.

A kind of gear-bearing, including axle are proposed in the utility model prospectus of Application No. 201220556543.8 Bearing outer-ring and bearing inner race, the lateral wall of bearing inner race forms a raceway with the medial wall of bearing outer ring, and roller is provided with raceway, The raceway of roller is in axial direction provided with fixes limits device with roller, and limits device is separately positioned on the both sides of roller, bearing The lateral wall of outer ring is provided with some gear teeth being uniformly arranged.By using direct geared as bearing outer ring, by limits device Bearing outer ring is fixed with bearing inner race, the axial limiting of gear and bearing inner race is reached, but still suffers from the fixation of bearing and axle Cooperation needs to prevent high impact forces.

Utility model content

The purpose of this utility model is to provide a kind of resistance to impact Biserial cylindrical roller bearing, strengthens bearing inner race with axle It is fixed, it is to avoid deviateing occurs with axle in bearing outer ring in the case of HI high impact.

Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of resistance to impact biserial Cylinder roller bearing, including bearing outer ring, bearing inner race, several rollers and positioning bearing inner race, the locating snap ring of bearing outer ring, The lateral wall of bearing outer ring is provided with some gear teeth, and the outer wall of bearing inner race of the cylindrical shape with axis hole is provided with two raceways, roller It is mounted on raceway, the axis hole of bearing inner race is provided with least one and has 70 degree of bar shapeds to 90 degree of angles recessed with axis hole axis Groove, strip groove extends to one end edge of bearing inner race and forms an opening, and the strip groove side wall near the other end sets There is at least one arc boss.

By adopting above-mentioned technical proposal, its operation principle is：In the bearing outer ring and bearing of Biserial cylindrical roller bearing Circle has in the circumferential relative motion, then by the rolling of roller by relative circumferential active force consumption, so as to realize in bearing, The asynchronous rotary motion in outer ring.Fixed by locating snap ring in the inside and outside circle of bearing, axial dipole field is prevented, in the axis hole of bearing inner race Inside it is provided with the strip groove that there is angle with the axis hole axis and strip groove end is provided with arc boss, arc bump tool The effect of round bump on limited dead axle, is easy to the fixation with axle circumferential and axial.

It is of the present utility model to be further disposed in padded coaming in strip groove.

By adopting above-mentioned technical proposal, strip groove has impact grinding with axle when the setting of padded coaming prevents impact Damage.

It is of the present utility model to be further disposed in the inwall middle part of bearing outer ring is provided with locking groove, and locating snap ring is arranged at In locking groove, locating snap ring has breach, and the both ends of the surface of breach and the radial direction of locating snap ring are in identical angle.

By adopting above-mentioned technical proposal, locating snap ring is fixed on bearing outer ring, fixing bearing inner ring and bearing outer ring, And stop is equipped with two ends in the breach of the radial direction in identical angle of locating snap ring, and stress deformation is extruded during for installing, and extrude Contact area is big during merging, and reducible degree is big.

It is of the present utility model to be further disposed in the both sides of locating snap ring are provided with packing ring and isolate locating snap ring with roller.

Prevent roller from contacting with locating snap ring by adopting the setting of above-mentioned technical proposal, packing ring, so as to the locating snap ring that weares and teares, together When further limit the axially position of the inside and outside circle of bearing.

The end margin for being further disposed at coordinating with axle in the axis hole of, bearing inner race of the present utility model be provided with rounding with And tangent-line transition.

By adopting above-mentioned technical proposal, by arranging rounding, the stress concentration on bearing side when bearing coordinates with axle is reduced Phenomenon, oblique transition is cut in setting makes bearing inner race contact when being fixedly connected with axle closely, coordinates compact.

In sum, this utility model has the advantages that：

1st, the axis hole of bearing inner race is provided with the rounding at the arc bump in strip groove and strip groove and axis hole two ends Bearing inner race is fixedly connected with axle closely with oblique transition is cut, prevent inner ring from loosening with axle, strengthen the protecting against shock of bearing and axle Toughness.

2nd, the setting of locating snap ring and packing ring reaches the effect of fixing bearing outer ring and bearing inner race.

Description of the drawings

Fig. 1 is the exploded view of resistance to impact Biserial cylindrical roller bearing；

Fig. 2 is the sectional view of resistance to impact Biserial cylindrical roller bearing；

Fig. 3 is sectional view at resistance to impact Biserial cylindrical roller bearing line A-A；

Fig. 4 is the schematic diagram of locating snap ring in resistance to impact Biserial cylindrical roller bearing；

Fig. 5 is the schematic diagram of roller in resistance to impact Biserial cylindrical roller bearing；

Fig. 6 is enlarged drawing at B in resistance to impact Biserial cylindrical roller bearing；

Fig. 7 is enlarged drawing at C in resistance to impact Biserial cylindrical roller bearing；

Fig. 8 is the schematic diagram of the axle coordinated with resistance to impact Biserial cylindrical roller bearing.

In figure, 1- bearing outer rings；2- bearing inner races；3- rollers；4- locating snap rings；401- breach；5- packing rings；6- raceways；7- Locking groove；8- strip grooves；9- rubber strips；10- annular recess；11- roundings；12- tangent-line transitions；13- limited impressions；1301- Spacing bayonet socket；14- heel braces；15- ripples；16- track cavitys；17- grooves；18- convex portions；19- arc boss；20- round bumps.

Specific embodiment

This utility model is described in further detail below in conjunction with accompanying drawing.

Embodiment：As shown in figure 1, a kind of resistance to impact Biserial cylindrical roller bearing, including bearing outer ring 1, bearing inner race 2nd, several rollers 3, locating snap ring 4 and packing ring 5, the lateral wall of bearing outer ring 1 is provided with some gear teeth, engages with engine gear, Complete transmission.The outer wall of bearing inner race 2 of the cylindrical shape with axis hole is provided with the raceway 6 of two annulars that be arranged in parallel, and roller 3 is mounted in On raceway 6, by the rolling of roller 3, the circumferential active force between bearing outer ring 1 and bearing inner race 2 is consumed, so that outside bearing Circle 1 and bearing inner race 2 produce relative motion.

With reference to shown in Fig. 2 and Fig. 4, locating snap ring 4 opens up jagged 401, under normality, and the size of breach 401 is 25 degree of angles, And the both ends of the surface of breach 401 and the radial direction of locating snap ring 4 are in 45 degree of angles, when being easy to locating snap ring 4 to snap in locking groove 7, stress is squeezed Compressive strain, and the cooperation on inclined-plane, deformable amount is bigger, is easily installed.The inwall middle part of bearing outer ring 1 is provided with locking groove 7, extrudes Locating snap ring 4 is allowed to deformation and is arranged in locking groove 7, and the both sides of locating snap ring 4 are provided with packing ring 5, prevent the high speed scroll of roller 3 and stop Ring 4 is contacted so as to the locating snap ring 4 that weares and teares, and the tight fit of packing ring 5, locating snap ring 4 and roller 3, is easy to outside axial restraint bearing Circle 1 and bearing inner race 2, prevent because impulsive force causes axial dipole field to affect degree of accuracy.

There is convex portion 18, it is convex that locating snap ring 4 and packing ring 5 are arranged on bearing inner race 2 between two raceways 6 in bearing inner race 2 In the cavity that portion 18 is formed with the inwall of bearing outer ring 1, and the upper surface of convex portion 18 leaves space with locating snap ring 4 and packing ring 5, can Flow in two raceways 6 for lubricant.The outer wall height of raceway 6 is identical with the radial height of roller 3, under preventing working condition Lubricant is lost to outside bearing because of centrifugal action.At least side wall of raceway 6 arranges limited impression 13, and the corresponding one end of roller 3 is embedding The limited impression 13 that enters simultaneously can be rotated in the inner circumferential of limited impression 13, and the two ends of limited impression 13 form spacing bayonet socket 1301, It is easy to limit the position that roller 3 is rolled, rolls the position that roller 3 is positioned at the place of limited impression 13.

With reference to shown in Fig. 2 and Fig. 6, two angles of two raceways 6 in bearing inner race 2 are equipped with annular recess 10, And it is in eight words that annular recess 10 is inclined to both sides, so as to the storage of lubricant, also can be by the lubricant of storage in rotation process It is centrifuged into raceway 6.

With reference to shown in Fig. 2 and Fig. 3, heel brace 14, the height of heel brace 14 are provided with the raceway 6 of bearing inner race 2 between adjacent rollers 3 Spend for a quarter of the diameter of roller 3, and be arc with the contact surface of roller 3, restriction is only served to the rolling of roller 3 and rolls model The effect enclosed, prevents roller 3 from contacting, so as to produce extra resistance.

With reference to shown in Fig. 2, Fig. 3 and Fig. 8, the shaft hole inner wall of bearing inner race 2 is provided with four has 70 with the axis of bearing inner race 2 Spend to the strip groove 8 of 90 degree of angles, strip groove 8 extends to one end edge of bearing inner race and forms an opening, close The side wall of the strip groove 8 of the other end is provided with two arc boss 19, and two arc boss 19 are arranged on relative side and not Symmetrically, bearing inner race 2 and axle joined together by strip groove 8 and arc boss 19 and axle with the same slope of strip groove 8 Projection 20 fix.During cooperation, by the strip groove 8 on the projection 20 on axle and bearing inner race 2 is by rotation and moves along a straight line, Projection 20 is snapped in two arc boss 19, formed fixed while being capable of achieving bearing inner race 2 with axle circumferential and axially solid It is fixed to coordinate, and close structure prevents impulsive force from causing axial dipole field to affect degree of accuracy.The conduct of rubber strip 9 is provided with strip groove 8 Padded coaming, is easy to bearing inner race 2 fixed with the keying of axle and prevents from impacting the damage of lower strip groove 8.

With reference to shown in Fig. 2 and Fig. 7, one end that the axis hole of bearing inner race 2 coordinates with axle is provided with rounding 11 and tangent-line transition 12, Rounding 11 weares and teares the corner most concentrated of stress when preventing from assembling, when cutting the setting of oblique transition 12 and bearing inner race is fixedly connected with axle Contact is tight, coordinates compact.

With reference to shown in Fig. 2 and Fig. 5, the surface of roller 3 is provided with the ripple 15 of ring-type, makes roller 3 and raceway 6, bearing outer ring 1 Between stress dispersion prevent stress concentration at the one of roller 3, it is possible to achieve by 2, bearing outer ring 1 in roller 3 and bearing Frictional force is converted into rolling friction, improves the radial load ability of bearing.And the top of the middle part ripple 15 of roller 3 is concordant, Ripple 15 makes the surface of roller 3 have recess and convex portion, and recess forms several tracks with bearing inner race 2, the surface of bearing outer ring 1 Cavity 16, and the groove 17 of several equally distributed quadrangular frustum pyramid shapeds is offered in recess, it is easy to kind of lubricant storage to make roller 3 Rolling is smooth, while it is linear contact lay that top concordantly contributes to roller 3 with raceway 6, bearing outer ring 1, makes rolling steady, prevents bearing There is axial skew in outer ring 1 and bearing inner race 2.It is arcuation so as to drop that the two ends of roller 3 have taper and the tip relief of bus two ends Stress concentration phenomenon, while contributing to lubricant flows to the friction that both sides reduce roller 3 and the side wall of raceway 6.

This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model Field technique personnel can make as needed the modification without creative contribution after this specification is read to the present embodiment, but As long as all being protected by Patent Law in right of the present utility model.

Claims (5)

1. a kind of resistance to impact Biserial cylindrical roller bearing, including bearing outer ring（1）, bearing inner race（2）, several rollers（3） With the positioning bearing inner race（2）, bearing outer ring（1）Locating snap ring（4）, the bearing outer ring（1）Lateral wall be provided with some The gear teeth, the bearing inner race of the cylindrical shape with axis hole（2）Outer wall be provided with the raceway of two annulars（6）, the roller（3）Dress In the raceway（6）On, it is characterised in that：The bearing inner race（2）Axis hole be provided with least one with the axis hole axis With 70 degree of strip grooves to 90 degree of angles（8）；The strip groove（8）One end edge for extending to bearing inner race is formed One opening, near the strip groove of the other end（8）Side wall is provided with least one arc boss（19）.

2. according to the resistance to impact Biserial cylindrical roller bearing described in claim 1, it is characterised in that：The strip groove（8） It is interior with rubber strip（9）.

3. according to the resistance to impact Biserial cylindrical roller bearing described in claim 1, it is characterised in that：The bearing outer ring（1） Inwall middle part be provided with locking groove（7）, the locating snap ring（4）It is arranged at the locking groove（7）In；The locating snap ring（4）Have Breach（401）, and the breach（401）Both ends of the surface and the locating snap ring（4）Radial direction be in identical angle.

4. according to the resistance to impact Biserial cylindrical roller bearing described in claim 3, it is characterised in that：The locating snap ring（4）'s Both sides are provided with packing ring（5）By the locating snap ring（4）With the roller（3）Isolation.

5. according to the resistance to impact Biserial cylindrical roller bearing described in claim 1, it is characterised in that：The bearing inner race（2） The end margin that coordinates of the axis hole and axle be provided with rounding（10）And tangent-line transition（11）.