RU121216U1 - ELECTRIC ACTUATOR ARROW TYPE JV ON THE BASIS OF A NON-CONTACT AUTOMATIC SWITCH - Google Patents

Abstract

1. Electric switch actuator, containing a housing with a cover, in which a number of units and mechanisms are mounted, including an electric motor, an autoswitch, a kinematic group that ensures the movement of the gate and control rulers, characterized in that the autoswitch is made contactless, containing reed position sensors with magnetic contacts , wherein each of the position sensors is controlled by a roller drive of the control lever, and is associated with the corresponding one of two switching levers interacting with the profile of the disk of the main shaft of the gate gear. ! 2. Electric switch actuator according to claim 1, characterized in that the housing of the reed position sensor contains a stationary stator with pairwise actuated hermetic contacts and a rotatable rotor with diametrically located permanent magnets, controlled by a control lever. ! 3. Electric switch actuator according to claim 2, characterized in that the stationary stator contains four sealed contacts, and the rotating rotor contains two magnets.

Description

The utility model relates to turnout electric drives of railway automation and telemechanics, which can be used for mounting on a headset near railroad switches on the right or left side of the turnout switch and control from the electric centralization station, and are intended for intermittent translation, locking and position monitoring in continuous mode the shooter with the indivisible course of wits.

A device is known - an electric non-cutting arrow non-contact type SPGB-4B (Website http://edu.dvgups.ru/METDOC/GDTRAN/YAT/AT/ST_SYS_AT/METOD/STREL_ELEKTROPR/Pel_4.htm.) [1]. The difference between the device is that it contains transformer proximity sensors and a faster electric motor. However, the scope of the known device is limited to the installation on the turnouts of sorting slides, as well as the inclusion of a nine-wire control circuit for high-speed turnouts, and is not intended to work on turnouts of tracks with five- and two-wire circuits for connecting to centralized control.

A device is known - electric switch with internal circuit type SP-6M (Armavir Electromechanical Plant, a branch of OJSC ELTEZA. Website http://www.100best.ru/Catalogue/Products/259700/) [2], controlled from the post of electric centralization , for translation in intermittent mode, locking and monitoring the position in continuous mode of the shooter with an indivisible move of the wit, which contains a housing 1 with a cover, a number of units and mechanisms are mounted in the housing, including an electric motor 2, a circuit breaker 3, a kinematic group, which provides I move the gate and control rulers, see the drawing YUKLYA.303341.007 TU 32 TsSh 2104-2002 (Fig. 1).

The interaction of the main shaft with the auto-switch is carried out by means of an axis-roller friction pair of the switching lever. A circuit breaker consists of a fixed terminal block and a block with knives, forming a short circuit or opening of the electric motor power circuit.

The electric drive of the type SP-6M allows you to translate, lock and control the position in the continuous mode of the shooter with the inseparable movement of the wits.

The disadvantage of the type SP-6M electric drive is that the open switch 3 used in its design with contact blocks 4 and knife blocks 5 (Fig. 2) is characterized by low reliability and a large number of failures in operation, such as: kink, frosting or icing , a burnout or a violation of the adjustment of the contacts of the auto-switch, which leads to the use of various protective measures (special lubricants, heating, protection of the contact zone, applying special notches on knives, etc.)

The electric drive type SP-6M in terms of features accepted as the closest analogue.

These disadvantages are eliminated by a contactless type auto-switch based on reed position sensors with magnetic contacts.

The technical result achieved by this utility model consists in the possibility of obtaining low-maintenance, stable and long-term operation of the switch electric drive for translating, locking and monitoring the position in continuous operation of the switch with inseparable movement of witters, as well as increasing the overhaul period and significantly reducing the number of failures of electric drives and associated with this downtime on the railway.

The technical result is achieved by the fact that in a turnout electric actuator containing a housing with a cover, in which a number of units and mechanisms are mounted, including an electric motor, an automatic switch, a kinematic group that provides movement of the gate and control rulers, according to a utility model, the automatic switch is made non-contact, containing two reed switches a position sensor with magnetic contacts, wherein each of the position sensors is controlled by a roller leash of the control lever, and is connected with the corresponding one m of two switching levers interacting with the disk profile of the main shaft of the vane gear.

The housing of the reed switch position sensor contains a stator with pairwise actuated hermetic contacts, and a rotor with diametrically arranged permanent magnets, controlled by a control lever.

In this case, the fixed stator contains four tight contacts, and the rotated rotor contains two magnets.

The inventive utility model is illustrated by the following graphic materials.

Figure 1 - General view of the electric drive SP-6M - the closest analogue.

Figure 2 - Diagram of the auto-switch electric drive SP-6M.

Figure 3 - General view of the inventive electric drive based on a proximity contact switch.

Figure 4 - Diagram of a contactless auto switch with reed position sensors.

5 is a diagram of a General view of a reed switch position sensor with magnetic contacts.

6. - Diagram of a reed switch position sensor with magnetic contacts, view A in FIG. 5.

7 - Kinematic diagram and algorithm of the operation of the switch with reed position sensors.

The list of positions in the figures.

1 - housing

2 - electric motor,

3 - auto switch,

4 - contact pads,

5 - knife pads,

6 - cam clutch,

7 - gear

8 - the basis of the auto switch,

9 - control levers,

10 - roller control lever

11 - reed position sensors,

12 - gate;

13 - control rulers;

14, 15 - sealed contacts (reed switches),

16 - stator

17 - connector

18 - leash

19 - rotor

20 - magnets,

21 - the housing of the position sensor,

22 - the main shaft,

23 - tension springs,

24 - a disk of the main shaft,

25, 28 - shifting levers,

26 - tooth control lever,

27 - roller switching lever 25,

29 - roller shift lever 28.

The inventive switch arrow type joint venture (Fig.3 ... 7) contains:

- housing 1 with a lid, locked from the inside with a special lock; a number of units and mechanisms are mounted in the housing, including:

- an electric motor 2, which rotates through a cam clutch 6 to a gearbox 7, consisting of a friction clutch and gears;

- auto-switch 3 (figure 4), containing a cast-iron base 8, on which are freely rotatable steel control levers 9, each of which contains a locking tooth 26 for fixing in the grooves of the control rulers 13 and the roller 10, for controlling reed switch position sensors 11, and also the gate 12 and the control line 13;

- a kinematic group that provides movement of the gate 12 and the control rulers 13, containing two parallel tension springs 23, the switching levers 25 and 28, the rollers 27 and 29 of the switching levers 25 and 28, respectively, a profile disk 24 of the main shaft 22;

- reed switch position sensors 11 with magnetic contacts (Fig.5 ... 7), made in a metal housing 21. The housing of the reed switch position sensor (Fig.6) contains a fixed stator 16, in which four sealed contacts 14 and 15 are connected in pairs, which are connected by conductors with a connector 17, and a deflectable rotor 19, controlled by the control lever 9. In the rotating rotor 19, which is located on the shaft of the leash 18, magnets 20 are placed. The rotor with magnets, rotating under the action of the control levers 9 of the auto switch, acts on tight contacts you (reed switches) 14 or 15, closing them with your own magnetic field and occupying various variants of fixed (Fig. 7) positions (in the corresponding situation on the turnout): a) control of the translated position and control of the initial position; b) the state of loss of control of pressing wit rail; c) control of the initial position and control of the translated position; d) incision of the turnout switch.

The reed switch with magnetic contacts is a universal and interchangeable product, its operation algorithm does not depend on the location on the circuit breaker and is determined by the wiring of the conductors of the connecting cable in the connectors and the position of the control rulers of the electric drive, which eliminates the possibility of entanglement of the sensors. Reed position sensors are approved for use in all climatic zones of the world. Estimated number of sensor operating cycles is 10 ⁶ cycles.

Switch electric drive type SP can be equipped with electric motors of various designs according to the type of electric current, rated voltage.

The feasibility of the utility model is illustrated by an example of a specific embodiment of an electric switch arrow type SP based on a non-contact auto-switch using reed switch position sensors, a general view and diagram of which are shown in FIGS. 3 and 4.

The housing 1 of the electric drive is a cast-iron casting of a rectangular shape, on two opposite sides of which at the exit points of the working gate 12 and the control rulers 13, seals are installed to prevent water and sand from penetrating inside it. The electric drive is closed by a welded steel cover with sealing on the sides. The electric drive is locked from the inside with a special lock.

An electric motor 2 is installed in the housing 1, at the end of the shaft of which a special cam clutch 6 is installed, which is simultaneously connected to the gear shaft of the gearbox 7. The gearbox 7 with an integrated friction clutch is a separate assembly mounted in the drive housing.

The switch 3 consists of a cast iron base 8, on which are installed two reed switch position sensors 11 (figure 4). To the sensors 11 are also connected electrical harnesses, which are not shown in the drawing. On the axes in a cast-iron base, freely rotatable steel control levers 9 with teeth 26 and rollers 10 are placed. Under the action of two tension springs 23 mounted in parallel on the switching levers 25 and 28, the control lever 9 deflects the reed rotor 19 (6) with its roller 10 position sensor 11, thereby closing the diagonally located sealed contacts 14 (Fig.6, 7), while controlling the position of the switch, which corresponds to state a ) (Fig.7). In this position, the roller 27 of the switching lever 25 falls into the cutout of the disk 24 of the main shaft 22, and the roller 29 of the switching lever 28 is located on the surface of the disk 30 of the main shaft 22. The control levers 9 provide loss of control of the position of the arrow when approaching wit due to deformation of rods from impacts and t .d. The control rulers 13 have cutouts in which, alternately during the course of their movement, along with the sharp points of the arrows, the teeth 26 of the control levers 9 fall.

The operation of an electric drive of a switch type SP based on a proximity contact switch using reed switch sensors.

The electric motor shaft, rotating through the clutch and the mechanical transmission system of the gearbox, rotates the gear with an emphasis, which squeezes the roller of one of the switching levers, for example, the roller 27 of the switching lever 25, and outputs the end of this lever from the cutout of the disk 24 of the main shaft.

At the same time, the switching lever 25 switches through the roller 27 the control lever 9 with the tooth 26 and the roller 10 from the control position to the working position. Under the action of two tension springs 23 mounted in parallel on the switching levers 25 and 28, the control lever 9 with its roller 10 deflects the leads 18 of the rotor 19 of the left and right reed position sensors 11, thereby closing the diagonally sealed contacts 14 (Fig. 6, 7) by transmitting to the EC post a signal about the operating state of the drive and controlling the translated position and the initial position of the switch points.

After rotation, the gear rotates the disk 24 of the main shaft 22 of the vane gear with emphasis.

Further, as in the prototype electric drive switch type SP-6M, at the beginning of the rotation of the main shaft of the slide gear one of the locking teeth of the gear unlocks the locking tooth of the working gate from the side of the pressed pin and the involute profile of the locking tooth of the gear makes the working gate move, while it engages with working gear teeth in the same direction.

By the end of the translation of the arrow, the working gate 12 stops, and the switching lever 25 under the action of two parallel tension springs 23 falls into the cutout of the disk 24 of the main shaft 22 of the gate gear. At the same time, the control lever 9 with the tooth 26 and the roller 10 under the action of the switching lever 25 switches and closes the oppositely located pair of sealed contacts 15 of the left and right reed sensors 11, transmitting a signal about the drive status to the EC post and opening the sealed contacts 14. V At the end of the translation, another locking tooth of the gear locks the second locking tooth of the working gate, but already from the side of the second pressed wit.

The control rulers are used to control the position of the pressed wit and sufficient abduction of the other from the frame rail.

The simple and reliable design of the contactless reed switches 11 is protected from electromagnetic interference, indexing and other negative factors that shorten the life cycle of the current switches of the well-known switch devices. This will increase the service life and make the design of the drive more technological.

The inventive switch actuator type SP based on a proximity contact switch using reed switch position sensors allows to achieve stable and long-term operation of the switch actuator for translation, locking and position control in continuous operation of the shooter with inseparable movement of wits.

INFORMATION SOURCES.

1. MOUNTAIN ARROW ELECTRIC DRIVES. Website http://edu.dvgups.ru/METDOC/GDTRAN/YAT/AT/ST_SYS_AT/METOD/STREL_ELEKTROPR/Pel_4.htm.

2. Electric switch arrow with internal circuit type SP-6M. Armavir Electromechanical Plant, a branch of Russian Railways. The site http://www.100best.ru/Catalogue/Products/259700/) is the closest analogue.

Claims (3)

1. Switch electric drive, comprising a housing with a cover, in which a number of units and mechanisms are mounted, including an electric motor, an automatic switch, a kinematic group, providing movement of the slide and control rulers, characterized in that the automatic switch is made non-contact, containing reed position sensors with magnetic contacts , wherein each of the position sensors is controlled by a roller leash of the control lever, and is connected with the corresponding one of the two switching levers interacting profile drive the main shaft of the slide gear. 2. Switch electric drive according to claim 1, characterized in that the housing of the reed switch of the position sensor comprises a fixed stator with pairwise actuated hermetic contacts and a rotary rotor with diametrically arranged permanent magnets, controlled by a control lever. 3. Switch electric drive according to claim 2, characterized in that the stationary stator contains four tight contacts, and the rotor rotor contains two magnets.