RU2288390C1 - Gear - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: gear comprises housing (1), conical gear wheels (2) and (3) mounted on shafts (4) and (5), rolling bearings (6) and (7), spacing bushing (8), and adjusting spacers. The wheels are pivotally connected to at least one of the shafts. The seat surface of the pivot connection is quasi-spherical, provided with split or key ways, and is mating with the cylindrical openings of the gear wheel provided with the split or key ways.

EFFECT: improved structure.

2 dwg

Description

The invention relates to the field of mechanical engineering and can be used in general gear manufacturing.

Known gear transmission, consisting of a housing, shafts on rolling bearings and gears. In this gear transmission, a spherical support is used for self-alignment of the wheels (AS USSR No. 460387, IPC F 16 H 1/14, published 02.15.75, Bulletin No. 6).

This design does not provide self-alignment gears with a mutually perpendicular arrangement of the axes of the drive and driven shafts installed in the bearings and bearing mating bevel wheels.

Known self-aligning bevel gear adopted for the prototype (A.S. USSR No. 1551892, IPC F 16 H 1/14, published September 23, 90, Bulletin No. 11), comprising a housing, mating bevel gears mounted on shafts, at least on one - pivotally, rolling bearings, spacer sleeve and shims.

This design is complex and not technological.

The objectives of the proposed technical solution are to increase the manufacturability of the design and ensure self-alignment of the gears with linear contact of the teeth.

These tasks are achieved by the fact that in a gear transmission, comprising a housing, mating bevel gears, mounted on shafts, at least one - pivotally, rolling bearings, spacer sleeve and shims, according to the claimed technical solution in the articulated coupling of the shaft with the gear pinion the surface of at least one of the shafts is made quasispherical with spline or keyways, mating with the cylindrical hole of the gear with spline or keyways, and full-time pads are made as elastic washers with quasi-spherical end surfaces.

Figure 1 shows the gear of the claimed design, figure 2 - section aa in figure 1.

The gear transmission (Fig. 1) consists of a housing 1, bevel gears 2 and 3 mounted on shafts 4 and 5, the seating surface of at least one of which is made quasispherical, with spline or keyways, thrust bearings 6 and 7, spacer bearings bushings 8 with quasispherical end surfaces and elastic washers 9 and 10 with quasispherical end surfaces made of heat-treated spring steel. These washers 9 and 10 are located between the gears 2 and 3 and the rotating inner rings of the rolling bearing 6 and 7.

During the operation of the gear transmission, the quasispherical end surfaces of the elastic washers 9 and 10, the spacer sleeve 8 and the quasispherical shaft seating surface with a spline or keyway provide self-alignment of the gears 2 and 3 within the pair of clearance gaps and linear contact of the teeth.

The quasispherical shape of the end surface of the washers allows you to expand the tolerances on the dimensions of the main parts, and the self-alignment of the gears, linear contact of the teeth and manufacturability are ensured by the quasispherical, with spline or keyway grooves, the seating surface of at least one shaft.

Claims (1)

A gear transmission, comprising a housing, mating bevel gears, mounted on shafts, at least one - pivotally, rolling bearings, spacer sleeve and shims, characterized in that in the articulation of the shaft with the gear, the seating surface of at least one of the shafts are made quasispherical with spline or keyways, mating with the cylindrical bore of the gear wheel with spline or keyways, and the shims are made in the form of elastic washers with quasispherical Skim end surfaces.

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