CS196025B1 - Modular device for moving brushes of electric commutatebrush control motor - Google Patents

Abstract

The invention relates to a modular device for moving the brushes of an electric commutator regulating motor.

Description

BACKGROUND OF THE INVENTION The present invention relates to a modular device for moving brushes of an electric commutator control motor.

The technical level of the drives by electric commutator control motors depends to a large extent on the technical level of the brush displacement device, which has a decisive influence on the speed control and on the state and dynamic properties of the drive. Brush feeders must meet a number of requirements in a modern drive, in particular, they must allow the use of different types of servomotors, the rotational time must be variable in operation without dismantling the commutator control motor, and provide tachodynamics to stabilize stabilization of the superior control loop. For manufacturing reasons, it is furthermore desirable that one type of brush displacement device be sufficient for commutator control motors of all sizes produced.

Until now, brush-moving devices have been designed according to the requirements, which is technically, economically and industrially disadvantageous.

This drawback removes the invention. modular device for moving brushes of electric commutator control motor, whose essence is that the output

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198 The CTM shaft engages with its toothing through the first helical gear to the transverse mounted shaft of the controllers and via slip clutch and spur gear is coupled to the countershaft engaging the second helical gear into a transverse mounted drive shaft coupled to the servomotor.

The transverse mounted drive shaft may be coupled to the taohodynamic.

The transversely mounted controller shaft may be coupled to an inductive or resistance transmitter.

An example of a practical embodiment of a modular device for shifting brushes of an electric commutator control motor according to the invention is shown in the attached drawing, which is a longitudinal section in Fig. 1 and Fig. 2 is a top view. The housing 12 comprises an output shaft 1 provided at one end with a handwheel 18, a first helical gear 2, a transverse shaft 2 of a controller, a slip clutch, a general gear 2, an intermediate shaft 2, a second helical gear 2 shaft g, servomotor 3, taohodynamo 12, position indicator 11, inductive or resistance transmitter 12 and idler.

As can be seen from the drawing, the output shaft 1, which moves the brushes of the electric commutator control motor through the intermediate wheel 12, simultaneously engages the transverse mounted shaft 2 of the controller via a first screw gear 6 which is very small. to achieve the desired angle of rotation of the controller, which is connected to the transverse shaft 2. On the output shaft X there is a slip clutch 2 which slips when the brushes of the electric commutator control motor strike the stop at the extreme position of the control range. Between the overrunning clutch 2 and the pre-positioning shaft g there is a spur gear g which is easily accessible and can be changed at any time by replacing the turning time. The countershaft ' is connected via a further helical gear 2 to a transversely mounted drive shaft 2 ' and to which the servomotor 2 '

To enable the electric commutator control motor to operate in a closed control loop and to have good dynamic properties, a taohodynamo 3.0 is also coupled to the transversely mounted drive shaft g. from which the control circuit damping signal is taken.

The stability of the superior hegulation loop is provided by a signal taken from an inductive or resistive transmitter 12 ' which is connected to the transversely mounted shaft 2 of the controller. At its other end, a position indicator H is mounted to indicate the position of the brushes of the commutator control motor.

The modular device for shifting brushes of the electric commutator control motor according to the invention is very simple and dimensionally small, so that one type of size is sufficient for electric commutator control motors of all manufactured sizes. The invention is economically advantageous and allows considerable savings in production.

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Without changing the nature of the invention, it can also be used in other devices in which a servomotor needs to be remotely set.

Claims (3)

1 »Modular device for moving brushes of an electric commutator control motor consisting of a housing containing an input shaft with handwheel, slip clutch, first and second helical gear, spur gear, servomotor, tachodynamo, inductive or resistance transmitter and transverse mounted shaft of the controller with brush position indicator characterized in that the output shaft (1) engages with its toothing (14) via a first helical gear (2) into a transverse mounted shaft (3) of the controller and is connected to a counter shaft via a slip clutch (4) and a spur gear (5) (6) engaging a second helical gear (7) in a transversely mounted drive shaft (8) coupled to a servomotor. (9). A modular device for shifting brushes of an electric commutator control motor according to claim 1, characterized in that the transversely mounted drive shaft (8) is connected to the tachodynamics (10). A modular device for moving brushes of an electric commutator control motor according to items 1 and 2, characterized in that the transversely mounted control shaft (3) is connected to an inductive or resistance transmitter (12). 2 drawings