CN207514074U - A kind of biserial conical bearing unit - Google Patents

Abstract

The utility model discloses a kind of biserial conical bearing units, belong to technical field of rolling bearings, it mainly solves the problems, such as that there are lubricating oil due to the circular step in outer bore is cancelled to cannot be introduced into Bearing inner.A kind of biserial conical bearing unit, including two bearing outer rings, two bearing inner assemblies and a cone spacer；The bearing inner assembly includes inner ring, set of rollers and retainer；The cone spacer is located between two inner rings；The a plurality of oil groove that outer ring inner radius is extended at the outer diameter of outer ring is distributed on the bearing outer ring large end face；Two bearing outer rings and two bearing inner assemblies form the identical taper roll bearing of two structures, which is reached the pairing of end-play by cone spacer, be combined into biserial conical bearing unit in a back-to-back fashion.The utility model has the characteristics that the lubricating oil from oilhole in the middle part of outer seat is made, which to enter Bearing inner, forms lubricating action, is mainly used for the rotational support at medium and heavy car owner's dynamic bevel gear position.

Description

A kind of biserial conical bearing unit

Technical field

The utility model belongs to technical field of rolling bearings.More particularly to a kind of novel double-row conical bearing assembled unit knot Structure, applied to medium and heavy car owner's dynamic bevel gear position.

Background technology

At present, medium and heavy car owner's dynamic bevel gear position support is frequently with two taper roll bearing " " mounting means back-to-back It realizes.As shown in Figure 1, two taper roll bearings are installed to from outer bore both sides in the outer bore of outer seat 1, outer seat 1 is in two circular cones Position is machined with circular step among roller bearing outer ring, and axially position and buffer action are played to bearing；In this circular step Between be machined with oilhole 2, communicated with the oil circuit in outer seat 1, lubricating oil by this oilhole enter two taper roll bearings between sky Gap, and flowed out to outside bearing between Bearing inner roller, lubricating loop is formed, plays lubricating action.

With the development of auto industry, drive bevel gear support uses new biserial conical bearing cellular construction, outer bore The circular step at middle part is cancelled, and outer ring will be in direct contact and gap may be not present between two bearings at this time, cause lubricating oil can not Into Bearing inner.Therefore conical bearing unit outer ring or its component need to set oil circuit keep the fuel feeding from outer seat can reliably into Enter Bearing inner and form lubricating action.The utility model is to reach this novel pair of one kind for having the function of lubricant passage way and developing Row tapered roller bearing assembled unit.

Invention content

The utility model develops a kind of novel double-row taper roll bearing assembled unit.With outside main cone seat endoporus do not have In the case that middle part circular step, two bearings outer ring are in direct contact, by the oil channel structures set on bearing unit outer ring assembl, The lubricating oil from oilhole in the middle part of outer seat is made to enter Bearing inner and forms lubricating action.

The technical solution of the utility model is：A kind of biserial conical bearing unit, including two bearing outer rings, two Bearing inner assembly and a cone spacer；The bearing inner assembly includes inner ring, set of rollers and retainer；The cone spacer is located at two Between a inner ring；It is characterized in that：It is distributed with and a plurality of is extended in outer ring at the outer diameter of outer ring on the bearing outer ring large end face Oil groove at diameter；Two bearing outer rings and two bearing inner assemblies form the identical taper roll bearing of two structures, this two Taper roll bearing reaches the pairing of end-play by cone spacer, is combined into biserial conical bearing unit in a back-to-back fashion.

Two bearing outer rings of the biserial conical bearing unit described in the technical solution of the utility model are being installed During use large end face with respect to contact position in the middle part of unit.

Oil groove described in the technical solution of the utility model is matched with the oilhole in the middle part of the outer seat of drive bevel gear.

Oil groove described in the technical solution of the utility model is generally evenly distributed in half on bearing outer ring large end face Arc groove.

Oil groove described in the technical solution of the utility model shares 4,6 or 8.

The utility model has the positive effect that：

To the circular step of two taper roll bearings isolation, lubricating action in the middle part of bore outside drive bevel gear When, in the case where the bearing outer ring of two taper roll bearings is in direct contact, lubricating oil can by the oilhole in the middle part of outer bore, Via the oil groove set on bearing outer ring large end face, reliably enter and lubricating action is formed inside unit bearing.

The utility model, which has, makes the lubricating oil from oilhole in the middle part of outer seat enter the spy that Bearing inner forms lubricating action Point.The utility model is mainly used for the rotational support at medium and heavy car owner's dynamic bevel gear position.

Description of the drawings

Fig. 1 is the structure diagram of conventional main cone bearing lubrication.

Fig. 2 is the structure diagram of the utility model lubrication.

Fig. 3 is the sectional view of the bearing outer ring of the utility model.

Fig. 4 is the left view of Fig. 3.

In figure：1. outer seat；2. oilhole；3. outer seat；4. oilhole；5. oil groove.

Specific embodiment

The utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figures 2 to 4.The utility model biserial conical bearing unit, by the identical taper roller axis of two structures The accurate pairing for reaching end-play by cone spacer is held, is composed in a back-to-back fashion.Taper roll bearing includes two Bearing outer ring, two bearing inner assemblies and a cone spacer.Bearing inner assembly includes inner ring, set of rollers and retainer.Cone spacer Between two inner rings.8 oil grooves that outer ring inner radius is extended at the outer diameter of outer ring are distributed on bearing outer ring large end face 5, oil groove 5, which is located at the outer diameter of outer ring, is equipped with horn-like port, and oil groove 5 is semicircular arc slot.When two bearing outer ring large end faces close Hold together and during 5 face of oil groove, just form 8 oilholes, and with 84 corresponding matchings of oilhole in the middle part of outer 3 outer bore of seat, horn-like end The oilhole that mouth passes through in the middle part of outer bore convenient for lubricating oil flows into.Two bearing outer rings of biserial conical bearing unit are being pacified during use Dress use when large end face with respect to contact position in the middle part of unit.The lubricating oil from outer 3 middle part of seat can be made to enter unit after installation Bearing inner plays lubricating action.

Installation process：

The utility model biserial conical bearing unit internal diameter is interference fitted with axis, and outer diameter coordinates with outer bore small―gap suture, peace First with forcing press by the assembled unit integral press mounting to axis of two taper roll bearings during dress, tightening nut；Later with small pressure Or it taps mode with hammer and this assembly is fitted into outer bore.

Claims (5)

1. a kind of biserial conical bearing unit, including two bearing outer rings, two bearing inner assemblies and a cone spacer；The axis It holds inner assembly and includes inner ring, set of rollers and retainer；The cone spacer is located between two inner rings；It is characterized in that：The axis The a plurality of oil groove that outer ring inner radius is extended at the outer diameter of outer ring is distributed on bearing outer-ring large end face（5）；Two bearing outer rings and Two bearing inner assemblies form the identical taper roll bearing of two structures, which is reached by cone spacer The pairing of end-play is combined into biserial conical bearing unit in a back-to-back fashion.

2. a kind of biserial conical bearing unit according to claim 1, it is characterised in that：The biserial conical bearing list The opposite contact position of two bearing outer rings of member large end face when installing and using is in the middle part of unit.

3. a kind of biserial conical bearing unit according to claim 1 or 2, it is characterised in that：The oil groove（5）With master The outer seat of dynamic bevel gear（3）The oilhole at middle part（4）It matches.

4. a kind of biserial conical bearing unit according to claim 1 or 2, it is characterised in that：The oil groove（5）It is equal The even half-arc groove being distributed on bearing outer ring large end face.

5. a kind of biserial conical bearing unit according to claim 4, it is characterised in that：The oil groove（5）Share 4 It is a, 6 or 8.