CN103047391A - Combination gear - Google Patents

Abstract

A combination gear is a gear of integral structure composed of a plurality of spur gears with same modulus and same teeth number. A plurality of spur gears are assembled together with the center hole as the axis of rotation and different teeth rotate in the same angle, and inner positioning keys and a center shaft of the gear are connected together to a form the combination gear.

Description

Built-up gear

One, affiliated technical field

The present invention relates to a kind of same modulus, be combined into an Integral-structure type built-up gear with a plurality of spur gear wheels of the number of teeth, belong to mechanical manufacturing field.

Two, background technique

At present, known cylindrical gears has straight-tooth, helical teeth, herringbone tooth, spur gear load concentration, transmission are not steady, helical gear load distribution uniform, stable drive, bearing capacity is higher, but has axial force to produce when transmission, just adopts herringbone gear in order to eliminate axial force, but herringbone gear processing is difficulty, and precision is lower.

Three, summary of the invention

In order to overcome existing spur gear wheel, cylindric spiral gear, the shortcoming and defect of herringbone gear, the invention provides a kind of cylindrical gears, this gear is not only processed simply, and has helical gear transmission stability, do not produce axial force when rotating, noise is little, and bearing capacity is higher.

The technical solution adopted for the present invention to solve the technical problems is; A plurality of same moduluses, with the spur gear wheel of the number of teeth take center hole as the axle center, carry out between tooth and the tooth a poor position rotation equal angular and arrange and fit together, become the structural formula built-up gear.

The invention has the beneficial effects as follows; Adopt a plurality of spur gear wheels relatively to rotate equal angular, the built-up gear that is assembled into structural formula is arranged in poor position, its single-piece gear is made simple, easy to assembly, when any single-piece gear failure wherein, can single-piece change this gear in use, overhaul convenient and swift, save material, this built-up gear is adapted at speed reducer and the central use of driving mechanism of large-scale heavy duty lotus.

Four, description of drawings

The present invention is further described below in conjunction with drawings and Examples;

Fig. 1. be the front view of built-up gear of the present invention.

Fig. 2. be the attached view of built-up gear of the present invention.

Among the figure: 1. built-up gear, 2. central gear axis, 3. interior positioning key, the 4. shaft shoulder.

Five, embodiment

In the drawings, each gear in the built-up gear (1) is same modulus, the same number of teeth, rotate equal angular between gear and gear, poor position is arranged and is installed on the central gear axis (2), process keyway at central gear axis (2), each gear in built-up gear (1) processes respectively positioning spline, built-up gear (1) is to be connected together by interior positioning key (3) and central gear axis (2), and the shaft shoulder (4) plays position-limiting action to built-up gear (1).

Claims (1)

1. a built-up gear is characterized in that; With same modulus, with a plurality of spur gear wheels of the number of teeth take center hole as the axle center, carry out between tooth and the tooth a poor position rotation equal angular and arrange and fit together, link together by key Placement and central gear axis, become the built-up gear of an Integral-structure type.

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