Final drive

FIELD: transport engineering.

SUBSTANCE: proposed final drive contains housing with oil reservoir, driven bevel gear and driving bevel gear with front and rear taper bearings whose outer races are press-fitted in bearing cup, and oil collecting pocket. Holes to let oil in and out are made in housing and bearing cup. Plate-type oil slinger with hole in central part is installed in cup between bearings. Diameter of slinger hole is less than inner diameter of front bearing outer race.

EFFECT: improved efficiency of lubrication of bearing of final drive driving gear.

 

The claimed invention relates to the field of transport engineering, in particular to the lubrication system main transmission drive axle of the vehicle.

A known design of the main transmission rear axle, when there is greater wear of the front bearing pinion than the rear. (Sasevich. Leading bridges. M: Engineering. 1985. - P.50-51, figure 2. 40).

Bearings pinion lubricated as follows: when the rotation of the driven gear oil is captured by her and the centrifugal force is thrown on the walls of the crankcase. When this oil is collected in the space between the two bearings pinion, passes directly through the bearings and returns to the oil reservoir; oil discharged into the oil reservoir from the rear bearing directly, but from the front through the hole to drain the oil.

The disadvantage of this design, the main transmission is that there is greater wear of the front bearing than the rear. This can be explained by inadequate lubrication at certain speeds and road uphill.

Known main transmission containing the crankcase with oil to lubricate the parts by spraying, in which the bearing supports are installed leading bevel gear, driven bevel gear differential, and two Maslo the priori channel for supplying oil to the bearing supports. (A.S. No. 1229082 “Gear axle of the vehicle”. IPC 60 To 17/16, priority 13.07.84, publication 07.05.86 year).

The disadvantage of this design is the disproportionate distribution of oil between the two bearings, with the front bearing is in the worst conditions lubrication than the rear. At low ambient temperatures, when the access thickened oil is difficult, and when driving the car after long Parking, front bearing long time running without lubrication.

Closest to the technical essence and the achieved result is the construction of the main transmission drive axle of the vehicle (A.S. No. 1445990. “The leading axle of the vehicle”. IPC 60 To 17/16, priority 16.02.87, publication 23.06.90 year).

The main transmission of the vehicle includes the crankcase with oil and two meloburne pockets, master and slave gears, the leading of which is located on a shaft mounted on the front and rear bearings, the outer casing which is pressed into the bearing Cup. Holes for supplying and discharging oil made in the crankcase and the bearing Cup. To drain the oil in the flange of the nozzle maloutas hole.

Bearings pinion lubricated as follows:

Driven gear throws lubricating fluid is C oil tank crankcase in malsbary pocket, from which it through macropodidae hole is directed into the space between the front and rear bearings pinion. Since in this case only the radial hole, the lubricating fluid is directed only to the bearings. Under the action of gravity in a large part of the oil supplied to the rear bearing, and lower the front bearing.

Through the rear bearing lubricating fluid drains back into the tank sump and through the front bearing gets into the cavity between the lid and the flange of the Cup main gear, where through maloutas hole drains back into the tank sump.

The disadvantage of this design is the disproportionate distribution of oil between the two bearings, with the front bearing is in the worst conditions lubrication than the rear, especially when installing drive axle with a turn of the drive flange to the top, and, hence, low service life of the main transmission due to ineffective lubrication of the front bearing.

The technical result of the claimed design, the main transmission is to increase the efficiency of the lubrication pinion, i.e. the creation of sustainable modes of transport vehicle lubrication of bearings pinion.

The task of the claimed invention is in the elicina service life of the main transfer.

This object is achieved in that the main transmission containing the crankcase with oil, placed in it the driven bevel gear and a leading bevel gear with front and rear tapered bearings, the outer casing which is pressed into the bearing Cup, and malsbary pocket, and in the crankcase and the bearing Cup with holes for supply and discharge of oil, according to the invention in the glass between the bearings installed slinger disc shape with a hole in the Central part, with a hole diameter of the slinger is less than the internal diameter of the outer ring of the front bearing.

A comparison of the claimed technical solution with the level of technology on scientific, technical and patent documentation on the priority date in the main and adjacent sections shows that the set of essential features of the claimed solution was not known, therefore, it corresponds to a condition of patentability “novelty”.

The proposed solution is industrially applicable, as it can be produced industrially, workable, feasible and reproducible, and therefore meets the condition of patentability “industrial applicability”.

Comparative analysis of the characteristics of the invention with the characteristics, Zvezdnyi from the prior art, showed that the slinger stated form and with a certain diameter of the hole to achieve the technical result has not previously been used. The hole diameter of the slinger must be smaller than the inner diameter of the outer ring of the front bearing or in other words, the hole diameter of the slinger should correspond to the upper oil level in marloboro cavity. This creates a certain supply of oil due to the difference between the bore diameter of the slinger and the inner diameter of the outer ring of the front bearing, and the greater this difference, the better the lubrication of the front bearing.

This allows to conclude that the technical solutions according to the condition of patentability “inventive step”.

Figure 1 shows the main transmission with holes for supplying and discharging oil, conventionally deployed to the plane of the drawing.

Figure 2 shows a section a-a in figure 1.

Main channel contains a crankcase 1 oil tank, which has a glass of 2 bearings and driven gear 3. The Cup 2 has a leading gear wheel 4 on the front 5 and rear 6 conical bearings. Between the bearings 5 and 6 in the Cup 2 is pressed the slinger 7, which is a washer disc shape with a hole in the Central part.

In the construction of the main transmission is provided malsbary pocket 8, openings for inlet 9 and outlet 10 oil, interconnected marloboro cavity 11 and cavity 12. Malsbary pocket 8 in the Cup 2 is used for the accumulation of oil from splashing driven gear 3. The oil 13 is poured into the oil reservoir in the crankcase 1

Bearing lubrication pinion main gear is as follows.

When the rotation of the driven gear 3 captures the oil 13 from the oil tank crankcase 1 and throws it into malsbary pocket 8. From there the oil hole for supplying oil 9 hits in marloboro cavity 11 between the bearings 5 and 6, where the slinger 7, and the cavity begins to fill with oil. When the oil level exceeds the internal diameter of the outer ring of the front bearing 5, the oil is poured into the cavity 12, lubricating the front bearing 5. While the slinger 7 prevents the ingress of oil to the rear bearing 6. From the cavity 12 through the hole to drain the oil 10 oil returns to the oil reservoir in the crankcase 1.

With further increase of the amount of oil in marloboro cavity 11 its level exceeds the diameter of the holes in the slinger 7 and butter through it goes to the rear bearing 6.

When is tance car slinger prevents the flow of oil from marloboro cavity 11 into the crankcase 1 and the main transmission, improving the lubrication of the front bearing 5 at the beginning of the movement of the car.

Thus, the introduction into the design of the main transmission of the vehicle of the slinger 7 allows you to improve the lubrication of the front bearing 5, without degrading the conditions lubrication of the rear bearing 6.

The main transmission containing the crankcase with oil, placed in it the driven bevel gear and a leading bevel gear with front and rear tapered bearings, the outer casing which is pressed into the bearing Cup, and malsbary pocket, and in the crankcase and the bearing Cup with holes for supplying and discharging oil, characterized in that the glass between the bearings installed slinger disc shape with a hole in the Central part, with a hole diameter of the slinger is less than the internal diameter of the outer ring of the front bearing.



 

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FIELD: transport engineering; transmissions of wheeled vehicles.

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Final drive // 2247038

FIELD: transport engineering.

SUBSTANCE: proposed final drive contains housing with oil reservoir, driven bevel gear and driving bevel gear with front and rear taper bearings whose outer races are press-fitted in bearing cup, and oil collecting pocket. Holes to let oil in and out are made in housing and bearing cup. Plate-type oil slinger with hole in central part is installed in cup between bearings. Diameter of slinger hole is less than inner diameter of front bearing outer race.

EFFECT: improved efficiency of lubrication of bearing of final drive driving gear.

FIELD: transport engineering; automobiles, tractors, diesel locomotives.

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