RU35178U1 - ARROW DC MOTOR TYPE MSP-0.25 - Google Patents

Description

ARROW DC MOTOR TYPE MSP-0.25

The utility model relates to electric motors, in particular to direct current DC electric motors in railroad switch systems.

A known DC motor containing a bed, pole pieces, field windings, a rotor and additional poles with excitation windings (see RF application No. 92000833, IPC Н02К11 / 00).

However, in the event of a blackout, the arrow is in an untranslated state, and it is impossible to bring it manually to the required position.

A known electric motor containing a stator, a rotor with an outer sealed sheath and longitudinal partitions installed between the rotor and the sheath with the formation of axial channels, the rotor is made without winding, the rotation of the shaft is provided by switching the stator winding coils using a rotation shaft through the collector, stator and rotor magnetic circuits have an axial arrangement, the magnetic cores are smaller, the polarity of the power cords does not change (see RF patent. No. 2191460, IPC Н02К1 / 32).

The dimensions of the motor shaft do not allow it to be installed on the executive body of the turnout switch.

The closest in technical essence to the proposed solution is a direct current motor type MSP - 0.25. The engine contains a steel casing, inside of which there is a stator with poles and with windings (coils), an anchor composed of stamped sheets of electrical steel connected to the collector plates, a brush assembly for supplying voltage to the armature. The anchor is located rigidly on the shaft through the compensation washers in the bearings. The engine contains two aluminum covers on both sides of the shaft pulled together by tightening screws together with the housing. Both ends of the shaft have a cylindrical shape with a keyway (see. Reznikov Yu.M. Electric drives of railway automation and telemechanics. - M.,: Transport, 985.288s.).

The disadvantage is the large mass of the housing due to its considerable thickness, a large gap between the surfaces of the rotor and the stator, as well as the inability to translate the switch mechanism when the motor is jammed or there is no electric voltage. In addition, the screws that tighten the engine covers and the body are fixed with Grover washers, which, due to vibration, cease to fulfill their direct functions, which leads to a disruption in the normal operation of the engine.

 3 g

MPK Н02К1 / 32, Н02К11 / 00

The objective of this solution is to provide the possibility of mechanical translation of the switch unit in case of engine failure or lack of electric voltage in the network.

The task is achieved in that the switch motor DC type MSP-0.25, comprising a housing, a stator with two poles and windings, an armature composed of sheets of electrical steel connected to the collector plates and a brush assembly for supplying voltage to the armature located rigidly on the shaft through the compensation washers in the bearings, two aluminum covers on both sides of the shaft, tightened together with the housing by tightening screws, while one of the shaft ends has a cylindrical shape with a keyway groove, according to the proposed solution, the second end of the shaft has a polygon shape, between the covers and tightening screws there are locking washers made of sheet metal material 0.3-0.5 mm thick in the form of an equilateral triangle with a hole in the central part

The case has a thickness in the range of 5-10 mm.

The gap between the stator and the armature is not less than 0.2 mm and not more than 0.7 mm.

The most convenient form of performing the second end of the shaft is a square.

The proposed device is illustrated by drawings: where in Fig. 1 is a side view of the engine, in Fig. 2 is a left view, in Fig. 3 is a right view. In the drawing, the following notation:

1-steel case;

2-stator poles;

3-stator windings;

4-anchor;

5-collector;

6-shaft anchors;

7-compensation washers;

8-bearings;

9-aJmini shrimp;

10 tightening screws;

11-terminals for connecting a power source;

12-locking washers.

The device comprises a steel casing 1, on which there are two diametrically opposite poles 2 with windings 3, an anchor 4, consisting of a set of sheets of an electrotechnical stele and containing windings in grooves connected to

a collector 5, which is rigidly located on the shaft of the armature 6. The shaft 6 through the compensation washers 7 in the bearings 8 is located in aluminum covers 9, which together with the housing 1 are tightened with screws 10 with lock washers 12. The conductors of the stator and anchor windings are electrically connected to the terminals 11 located on case 1.

The device operates as follows. Depending on the direction of rotation of the motor shaft 6, voltage is supplied between the central and side terminals 11. As a result of rotation 6, the railroad actuator is actuated until the corresponding sensor that controls the correct translation is triggered.

In unforeseen circumstances - power failure, failure of one of the stator windings or the armature winding, failure of the sinter assembly, etc. the switch assembly is in an undefined position, which must be removed mechanically using a special key, accessible only to maintenance personnel. For this, the free end of the shaft 6 has the shape of a polygon (triangle, square, rectangle, pentagon, hexagon or special shape). As a result of the operation of the engine, as a result of vibrations, traditional grower washers cease to perform direct locking functions and the mode of operation of the electric motor is violated or it malfunctions. In order to eliminate this drawback, lock washers 12 are used, made of sheet material 0.3-0.5 mm thick in the form of an equilateral triangle with a hole in the central part. They completely eliminate engine failures due to loosening tightening screws 10.

Claims (4)

1. Switch DC motor comprising a housing, a stator with two poles and windings, an armature composed of sheets of electrical steel connected to the collector plates, and a brush assembly for supplying voltage to the armature located rigidly on the shaft through expansion washers in the bearings, two aluminum covers on both sides of the shaft, tightened together by tightening screws, and one of the ends of the shaft has a cylindrical shape with a keyway, characterized in that the second end of the shaft is shaped polygon, between the covers and the X's lag screws are arranged washers formed from sheet metal material of thickness 0.3-0.5 mm in an equilateral triangle with a hole in the central portion. 2. The arrow electric motor according to claim 1, characterized in that the housing has a thickness in the range of 5-10 mm. 3. The arrow electric motor according to claim 1, characterized in that the gap between the stator and the armature is not less than 0.2 mm and not more than 0.7 mm. 4. The arrow electric motor according to claim 1, characterized in that the second end of the shaft has a square shape.