CN207554570U - A kind of double-row conical bearing structure suitable for being tested around eight words - Google Patents

Abstract

The utility model discloses a kind of double-row conical bearing structures suitable for being tested around eight words, between bearing outer ring and bearing inner race, rolling element is positioned in the gap of bearing inner race and retainer, retainer constrains rolling element on the raceway of bearing inner race, and the cone angle of bearing inner race and bearing outer ring is 20~30 °.When automobile wheel edge bearing is under the experiment of eight word special projects or other harsh experimental conditions, rolling element at left and right sides of bearing will bear very big alternation axial force, rolling element and raceway axial carrying capacity can effectively be improved using the design of auger angle bearing, the stress concentration of bearing large-flange can be reduced using the rib design of big groove.The utility model can solve existing common double-row conical bearing in the performance hidden danger there are bearing inordinate wear or failure under eight word special project experimental conditions, it improves wheel side axis and holds the requirement of limit turning, especially suitable for the vehicle high to off-the-road requirements, help avoid the generation of bearing failure.

Description

A kind of double-row conical bearing structure suitable for being tested around eight words

Technical field

The utility model is related to a kind of double-row conical bearings, and in particular to one kind is applicable to test around eight word special projects Under the conditions of wheel side double-row conical bearing.

Background technology

In general, vehicle of less demanding to bearing capacity but high to comfort property requirement（Such as car, SUV）, it is general to use Deep groove ball bearing or rolling element are taken turns side axis as it for the hub unit of ball and are held.As market is to long wheelbase, wide wheelspan vehicle Demand, it is also more and more that each main engine plants wheel side axis high to bearing capacity hold demand, double-row conical bearing because with its compared with High dynamic load rating and relatively low cost and be widely adopted.

However, the vehicle for matching the high double-row conical bearing of dynamic load rating value tested around eight word special projects When, the frequent failure that bearing inordinate wear or failure occurs；Comprehensive long duration test and high speed long duration test are being carried out with money vehicle But do not occur the failure of any bearing extraordinary failure.Thus it is clear that it is very harsh to automobile wheel edge bearing requirements around the experiment of eight word special projects, The outstanding automobile of high-performing car particularly cross-country ability should use the double-row conical bearing that can meet and be tested around eight words.

Invention content

The purpose of this utility model is that solving common double-row conical bearing cannot meet what is tested around eight word special projects It is required that so as to provide a kind of double-row conical bearing structure suitable for being tested around eight words.

The technical solution of the utility model：A kind of double-row conical bearing structure suitable for being tested around eight words, in axis Between bearing outer-ring and bearing inner race, rolling element is positioned in the gap of bearing inner race and retainer, and retainer constraint rolling element exists On the raceway of bearing inner race, bearing inner race and bearing outer ring cone angle are 20~30 °.

Further, bearing inner race and bearing outer ring cone angle are 25 ° of

Further, inner ring large-flange channel radii is R1.0mm.

When automobile wheel edge bearing is under the experiment of eight word special projects or other harsh experimental conditions, the rolling at left and right sides of bearing Kinetoplast will bear very big alternation axial force, and can effectively improve rolling element and raceway using the design of auger angle bearing axially holds Loading capability can reduce the stress concentration of bearing large-flange using the rib design of big groove.

The utility model can solve existing common double-row conical bearing to be existed under eight word special project experimental conditions Bearing inordinate wear or the performance hidden danger of failure improve wheel side axis and hold the requirement of limit turning, especially suitable for cross-country The high vehicle of performance requirement, helps avoid the generation of bearing failure.The utility model is not that simple structure is applied mechanically, and is to pass through What experiment obtained, there are substantive features.

Description of the drawings

Fig. 1 is the structure diagram of common double-row conical bearing；

Fig. 2 is the structure diagram of the utility model double-row conical bearing；

Fig. 3 is the structure diagram of the utility model double-row conical bearing inner ring；

Fig. 4 is in the bearing stress distribution results under eight word operating modes using common double-row conical bearing；

Fig. 5 is in the bearing stress collection of illustrative plates distribution results under eight word operating modes using common double-row conical bearing；

Fig. 6 is in the bearing stress distribution results under eight word operating modes using the utility model double-row conical bearing；

Fig. 7 is to be distributed knot in the bearing stress collection of illustrative plates under eight word operating modes using the utility model double-row conical bearing Fruit；

In figure：1st, bearing inner race；2nd, rolling element；3rd, retainer；4th, bearing outer ring.

Specific embodiment

By the technology contents of the utility model are described in detail, construction feature, are realized target and effect, below in conjunction with implementation Mode simultaneously coordinates attached drawing to be explained.

Referring to Fig.2, rolling element 2 is positioned in the gap of bearing inner race 1 and retainer 3, then recruitment drives the rivets and retainer 3 is pressed to make Deformation and constrain rolling element 2 on the raceway of bearing inner race 1, be then inserted in bearing outer ring 4 complete the double-row conical axis The assembling held.

Under the premise of not changing primitive axis and holding appearance and size, its inside and outside circle cone angle is increased to 20 °~30 °；

Bearing inner race large-flange channel radii is increased to R1.0 by R0.5 refering to Fig. 3.

Within, the test of 25 ° of cup angle, automobile around the experiment of eight words is carried out under lasting turn condition, is held in wheel side axis Also there is the axial force as caused by turning in addition to intrinsic radial load in place.

Refering to Fig. 4,5, common double-row conical bearing serves as wheel side axis when holding, and force area is concentrated mainly on rolling element Big end simultaneously generates stress concentration, its long rolling element big end generation is seriously worn and peels off；

Refering to Fig. 6,7, after the bearing for employing the utility model, under the experimental condition of same condition, shaft strength area will Move to in the middle part of rolling element, it is effective avoid force area too short and the defects of rolling element big end stress concentration, improve bearing in pole Performance in the case of limit turning.

The foregoing is merely the use of the new type embodiments, and it does not limit the scope of the patent of the present invention, every profit The equivalent shapes or Structural Transformation made with the utility model specification and accompanying drawing content, are directly or indirectly used in other phases The technical field of pass, is equally included in the patent within the scope of the utility model.

Claims (3)

1. a kind of double-row conical bearing structure suitable for being tested around eight words, bearing outer ring (4) and bearing inner race (1) it Between, rolling element (2) is positioned over bearing inner race (1) and in the gap of retainer (3), retainer (3) constraint rolling element (2) is in bearing On the raceway of inner ring (1), which is characterized in that the cone angle of bearing inner race (1) and bearing outer ring (4) is 20~30 °.

2. a kind of double-row conical bearing structure suitable for being tested around eight words according to claim 1, feature exist In the cone angle of bearing inner race (1) and bearing outer ring (4) is 25 °.

3. a kind of double-row conical bearing structure suitable for being tested around eight words according to claim 1 or 2, feature It is, is R1.0mm by bearing inner race large-flange channel radii.