SU1668706A1 - Piston machine drive - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to mechanical engineering with an increased requirement for a vibration level value. The drive of the piston machine includes a housing 1, an electric motor 2, a reducer 3, which provides rotation of the drive shaft 4 in the opposite direction to the rotor of the electric motor 2. By adjusting the moments of inertia of the reducer links, the total inertial loading of the drive is equal to zero, thereby reducing the reactive torque loading the body of the machine on which the drive is being installed and the level of vibration of the body lowers. 1 hp f-ly, 1 ill.

Description

The invention relates to mechanical engineering with an increased requirement for the level of vibration. The piston machine drive comprises a housing 1, an electric motor 2, a reducer 3, which provides rotation of the drive shaft 4 in the opposite direction to the rotor of the electric motor 2. By selecting the values of the moments of inertia of the links of the gearbox, the total inertial loading of the drive is equal to zero as a result of which the reactive moment of forces decreases loading case of the machine on which the drive is installed, and the vibration level of the case decreases. 1 s.p. f-ly. 1 ill.

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1668706 A1

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1668706

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The invention relates to mechanical engineering and for the production of drives of machines with increased requirements for the level of vibration of their bodies.

The purpose of the invention is to reduce the vibration of the drive casing and reduce its dimensions.

Figure 1 shows the layout of the drive, a General view in section.

The piston machine drive contains 10 housing 1, an electric motor 2 installed therein with a rotor (not shown) and a drive shaft 3. a drive shaft 4 with a hub 5, a gearbox including intermediate gears 6 and 7 with fixed axes of rotation 8 15 th 9 and a drive a gear 10 mounted on the drive shaft 3 with the possibility of interaction through the intermediate gears 6 and 7 with the hub 5 of the drive shaft 4. The hub 5 of the drive shaft 4 20 is made in the form of a gear with internal teeth meshed with the teeth of the intermediate wheels b and 7, and have s ring 11 made of a heavy metal such as tungsten, and 25 installed perpendicularly fief driven shaft axis

4. The fixed axis of rotation 8 and 9 are rigidly connected to the electric motor 2.

In this case, the moments of inertia of the drive shaft 4, the hub 5 with the ring 6, the intermediate 30 gears 6 and 7 and the rotor of the electric motor 2 with the drive gear 10 are connected by the following ratio:

^{, nb +? c + i 1pc =} e ^{, p '35}

where lnb. 1s, Ιηΐί. 1p - moments of inertia, respectively, of the drive shaft 4, hub 5 with the ring 6, intermediate gears 6 and 7 and the rotor of the electric motor 2 with the drive gear 10: 40

Ζε, Ζπκ, Ζοιιι - the number of teeth, respectively, of the hub 5, the intermediate wheels 6 and 7, and the pinion gear 10.

The piston drive <machine operates as follows. 45

When the shaft 3 of the electric drive 2 is rotated by the drive shaft 4 through the pinion gear 10, the intermediate gears 6 and 7, the hub 5, a movement of 50

the direction opposite to the rotation of the rotor of the electric motor 2.

By selecting the values of the moments of inertia in accordance with the ratio

Ζε Ζα

! ni + 1 _C + ν — Ιπκ = m — Ιρ we have reached pa £ pc

The fact that the total inertial loading of the drive links is zero, as a result of which the reactive moment of forces transmitted to the machine body (not shown), onto which the drive is mounted, decreases, which reduces the level of angular oscillations of the drive body and the machine.

Claims (2)

Claim 1. Drive a piston machine, comprising a housing, an electric motor with a rotor and a shaft installed in it, a drive shaft with a hub, and a gearbox including intermediate gear wheels with fixed axes of rotation and a drive gear mounted on the motor shaft with the possibility of interaction through intermediate gears with a drive shaft hub, characterized in that, in order to reduce the vibration of the drive casing and its dimensions, the hub of the driven shaft is made in the form of a gear with internal teeth s, meshing with the teeth of the intermediate wheel, and is provided with a ring, made of heavy metal and mounted perpendicularly to the axis of the motor shaft; and the fixed axis of rotation is rigidly connected with the electric motor, while the moments of inertia of the drive hub with the ring of intermediate gear wheels and the rotor of the electric motor with the pinion gear are connected by the relation 1 + with! where 1pb. !with. Ιπκ, Ιρ - moments of inertia, respectively, of the drive shaft, the hub with the ring, the intermediate gear wheels and the rotor of the electric motor with drive gear; Ζε, Ζπκ. Ζβιο- number of teeth, respectively, of the hub, intermediate wheels and pinion gears. 2. The drive according to claim 1, characterized in that the ring is made of tungsten.