Planet differential motion reduction gearbox with interlayer air cooling box body supported by zinc base alloy bearings

Abstract

A planet differential motion reduction gearbox with an interlayer air cooling box body supported by zinc base alloy bearings comprises the box body, an input shaft, a differential motion-dwarf planet component and an output shaft. The planet differential motion reduction gearbox with the interlayer air cooling box body supported by the zinc base alloy bearings is characterized in that a connecting piece of an inner cylinder and a circular end cover is arranged in the box body, the inner cylinder is connected with the box body, the input end of the circular end cover is in close fit with an inner hole in the input end of the box body, the circular end cover and the box body are connected through an annular disk, the inner wall of the box body and the outer wall of the connecting piece of the inner cylinder and the circular end cover form an interlayer, an exhausting window is arranged on the top of the box body, and a draught fan is arranged on the side portion of the box body; the differential motion-dwarf planet component comprises a sun gear, a planet gear, a star wheel shaft, a first inner gear ring, a planet carrier, a quasi sun gear, a quasi planet gear, a quasi star wheel shaft, a second inner gear ring and a quasi planet carrier; the output shaft is supported in the corresponding alloy bearing, a sponge in the output shaft and a shaft hole constitute an oil storage cavity Q, and lubricating oil flows to the friction surface from a small hole of the output shaft. The planet differential motion reduction gearbox has the advantages that the structure is simple, and cost is low; the air capacity is adjusted to enable thermal power to be close to mechanical power; alloy bearing lubrication is reliable, bearing cost is lowered by 60%-80%, and bearing steel is saved by 50%-70%.

Description

【Technical Field】 [0001] The invention relates to an improvement in the field of planetary technology, in particular to an improvement in a combined differential and quasi-planetary gear train, a planetary differential reduction gearbox supported by a zinc-based alloy bearing of a sandwich air-cooled box. 【Background technique】 [0002] Universal planetary transmission 2K-H negative sign mechanism includes NAD (single stage), NBD (two stage) and NCD (three stage). [0003] The study found that the existing planetary transmission technology has two shortcomings: [0004] (1) The output shaft is supported by rolling bearings, and the cost is much higher than that of sliding bearings, especially high-power and high-torque models: the basis is found in the "Design and Manufacturing of Involute Gear Planetary Transmission" Chapter 12 Cement Ball Mill Reducer Calculation Examples: [0005] "Because the (planetary reducer) output shaft bearing does not bear the radial working load (only bea...

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Problems solved by technology

[0018] Purpose of the present invention: to solve the prior art (1) the output shaft is supported by rolling bearings, and the cost is much higher than that of sliding bearings, especially for high-power and high-torque models; (2) the gearbox itself does not have a heat dissipation function, so the thermal power is low defect

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