Heavy-load drive axle of 5-ton loader

Abstract

The invention discloses a heavy-load drive axle of a 5-ton loader, which is characterized in that a 32222 bearing is adopted as a wheel side bearing, a split structure is adopted as a cross axle of adifferential mechanism, and the axle diameter is phi 34; the parameters of a wheel-side gear are as follows: the modulus is 6.5, center distance is 108.5, the pressure angle is 24 degrees, the addendum coefficient of planet gears and an inner gear ring is 1, the top clearance coefficient of the planet gears and the inner gear ring is 0.25, the addendum coefficient of a sun gear is 0.8, the addendum coefficient of the sun gear is 0.3, the tooth width is 70, the tooth number of the sun gear is 15, the modification coefficient of the sun gear is 0.15, the tooth number of the planet gears is 18, the modification coefficient of the planet gears is 0.1, the tooth number of the inner gear ring is 51, the modification coefficient of the inner gear ring is 0.3, and the number of the planet gears is3; the parameters of the differential mechanism are as follows: the tooth number of a bevel gear is 10, the tooth number of ta half axle gear is 16, the modulus is 9, and the pressure angle is 22.5 degrees. The safety reliability of the drive axle is improved, the service life of the drive axle is prolonged, and meanwhile the machining requirement of the cross axle of the split structure is lowered.

Description

technical field [0001] The invention relates to a drive axle structure of a loader, in particular to a heavy-duty drive axle of a 5-ton loader. Background technique [0002] The domestic construction machinery industry has begun to pay more and more attention to quality. The quality of the driving axle of the mainstream 5-ton loader in the industry can no longer meet the needs of customers, especially when it is operating under heavy load conditions. At present, the wheel gear parameters of the mainstream 5-ton loader drive axle generally adopt modulus 6.5, center distance 107.25, pressure angle 20°, addendum height coefficient 0.8, crown coefficient 0.3, tooth width 60, sun gear teeth number 15, planetary gear The number of teeth is 18, the number of teeth of the inner ring gear is 51, the number of planetary gears is 3, and the gears are not displaced; the wheel side bearings generally adopt 32221 bearings; the parameters of the differential generally adopt the bevel gear ...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned defects and provide a 5-ton loader heavy-duty drive axle with simple structure, low manufacturing and maintenance costs, safe and reliable use and long service life, so as to solve the following two problems in the prior art: ① 1. In the wheel side parameters, the contact strength of the sun gear tooth side is insufficient, and the sliding rate is too high, which may easily cause pitting failure on the tooth surface. At the same time, the 32221 bearing on the wheel side cannot meet the requirements of heavy load conditions and is easily damaged; ②. The strength of the differential cannot meet the requirements The requirement of heavy-duty working conditions, when encountering heavy-duty working conditions, the differential is prone to gearing, and it is difficult to guarantee the machining accuracy of the integral structure of the cross shaft. Fracture fault

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