RU2648931C1 - Two-speed gearbox - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to the field of engineering, and more particularly to the two-speed drives. Two-speed gearbox contains a drive operating at one speed, and an additional drive connected to it via worm of a worm gear. Drives are connected to the different ends of the worm shaft. Additional drive operates at a second speed. Operation of the drives is carried out alternately. When one drive is running, the other drive is disconnected.

EFFECT: simplification of design is achieved.

1 cl, 1 dwg

Description

Technical field

The invention relates to shipbuilding, and in particular to structures of two-speed drives of ship installations.

State of the art

Known Patent SU 384737 "Two-speed gearbox of a marine propulsion system", comprising direct transmission to a first speed propeller with concentrically arranged gears, enumeration of second speed gears with a gear block and a regulator drive, wherein the first speed is carried out by direct transmission from the crankshaft of the power unit, and switching from the first speed to the second is carried out by the gears of the first gear and the gear block of the second gear and the fluid coupling installed between them (www.1.fips.ru, RU2296081). The disadvantages of this patent are the complexity of the design and the lack of the ability to instantly switch from one gear to the second.

Disclosure of invention

The technical task of the present invention is the development of such a design of a two-speed gearbox, which would allow you to quickly (instantly) switch from one gear to another and would have a simple design.

The claimed technical result is achieved by connecting two different-speed drives (1), (2) with a worm gear, through which subsequently the speed is transmitted to the gearbox shaft (6) (Fig. 1).

It should be noted that each of the drives (1), (2) in the claimed solution have a different speed and can rotate in both directions, in addition, in the wilted solution they can only work in turn (Fig. 1).

Thus, with the simplicity of the design, it is possible to work with two speeds with a quick transition from one speed to another with simplicity of design.

Brief Description of the Drawings

FIG. 1 is a schematic illustration of a two speed gearbox.

Designation of structural elements:

1 - drive one;

2 - drive two;

3 - a worm;

4 - the shaft of the worm;

4.1 - one end of the worm shaft;

4.2 - the second end of the worm shaft;

5 - a worm wheel;

6 - gear shaft.

SUMMARY OF THE INVENTION

The two-speed gearbox (Fig. 1) contains one (1) drive and two (2) drives connected to the worm gear (3), namely, connected to different ends of the worm shaft (4), (4.1), (4.2). The drive one (1) is connected to one end of the worm shaft (4.1) and transmits to the worm (3) through the shaft (4) at one speed, and the drive (2) is connected to the second end of the worm shaft and transfers to the worm (3) through the shaft ( 4) rotation at a different speed. Moreover, both drives (1), (2) can rotate in both directions.

When the drive operates, one (1) at one speed, it transmits rotation to the worm (3) through the shaft of the worm (4), which, in turn, transfers rotation to the worm wheel (5), transmitting rotation to the gear shaft (6), when changing the speed the drive (1) is turned off and the drive (2) is turned on, which operates at a second (different) speed and transmits the rotation to the worm (3) through the shaft (4), which, in turn, transmits the rotation to the worm wheel (5) transmitting rotation of the gear shaft (6) at the next speed change, the working drive is turned off and the second drive is turned on and etc.

The result is a quick change of two speeds with simplicity of design.

Claims (1)

A two-speed gearbox containing a drive operating at one speed, and an additional drive connected to it through the worm of the worm gear drive, the drives are connected to different ends of the worm shaft, characterized in that the additional drive operates at a second speed, the drives are operated alternately, while working one drive another drive is disabled.

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