RU2701300C1 - Method of controlling current-carrying device of a subway car and a current-collecting device for realizing the method - Google Patents

Abstract

FIELD: electrical equipment; transportation.

SUBSTANCE: group of inventions relates to current collectors of vehicles. Method of controlling the current collector of a subway car involves changing the current collector from an operating position to an inoperative position and switching the current collector from a non-operating position to a working position. At that, in order to transfer current collector from non-working position to electric power supply to electric power equipment of car, pressure is first supplied to pneumatic cylinder for squeezing to release load from working spring to locking mechanism. Pressure is then forced into the pneumatic cylinder to unlock and the locking mechanism is disengaged. Pressure is then released from the pneumatic cylinder for squeezing, wherein the shoe is pressed to the current-conducting rail, and thereafter, pressure is released from the pneumatic cylinder for unlocking to return the locking mechanism to the initial position. Also disclosed is a current receiving device for realizing said method.

EFFECT: technical result consists in improvement of reliability in extreme situations and improved safety of subway cars.

6 cl, 6 dwg

Description

The invention relates to methods and devices for railway vehicles, in particular for subway cars, and can be used in current collection systems with controlled current collectors.

Known current collector rail type TR-7B U2 with a pneumatic drive, designed for current collection of electricity from a conductive rail of the power supply system of the rolling stock of the metro, containing a base relative to which a lever is swinging with a current-collecting shoe fixed on it, two coil springs used to press the shoe against the conductive rail , a pneumatic cylinder designed to remotely squeeze a shoe from a conductive rail or press it against it.

The method of controlling the current collector is as follows - to transfer the shoe of the current collector from the working position to the inoperative one, compressed air is supplied to the pneumatic cylinder of the current collector, under the pressure of compressed air, the pneumatic cylinder rod moves down and, overcoming the force of the springs, depresses the shoe from the conductive rail and holds the shoe in the pressed position, returning the current collector to the working position is carried out by releasing air from the pneumatic cylinder, while the shoe is pressed against the tocopr under the influence of two springs A driving rail (https://studopedia.su/15_106255_tokopriemnik-tr-b-s-izmenennim-mehanizmom-fiksatsii.html; http://studepedia.org/index.php?vol=1&post=28833).

The disadvantage of this method of controlling the current collector and the device of the current collector is the lack of reliability due to the possibility of spontaneous return of the current collector from the idle position due to leaks in the pneumatic system of the car, the lack of indication of the pressed position of the current collector on the driver’s control panel and the lack of automatic locking of the shoe in the released position.

Closest to the proposed group of inventions in terms of essential features is the controlled pneumatic current collector TPA-02, containing a base, an insulator on which a current collector shoe is located, installed to interact with a conductive rail, a working spring for pressing the collector shoe to the contact rail, and a pneumatic cylinder for pressing the shoe of the current collector from the conductive rail and the locking mechanism to keep the shoe of the current collector inoperative.

The method of controlling the TRA-02 current collector is carried out as follows: transferring the current collector from the operating position, in which the shoe is pressed against the conductive rail with the help of a working spring, while electric energy is supplied from the conductive rail through the current collector shoe and the flexible shunt to the power electrical equipment of the car is inoperative the position in which the shoe is squeezed from the conductive rail by applying compressed air pressure to the pneumatic cylinder for squeezing and is fixed by a locking mechanism to hold the shoe of the current collector in an idle position, while there is no supply of electric energy to the power equipment of the car, and the transfer of the current collector from the idle position to the working position (patent RU 2374094, IPC B60L 5/39 (2006.01), 11.29.2009).

The known method and device do not ensure the reliability of the current collector, due to malfunctions of the current position indicator display system in case of damage to the pneumatic system, the possibility of remote switching of the current collector in the event that there are traveling floor devices in the shoe shoe area, which affects the safety of operation of subway cars.

The objective of the group of inventions is to create a method for controlling the current-receiving device of a subway car and a current-receiving device to implement a method that increases the reliability of the device in extreme situations (with damage to the pneumatic system, low temperatures) and increases the reliability of the indication system of the pressed state of the current-receiving device and provides remote switching of the current collector in any areas lines.

The technical result when using the proposed group of inventions is to increase reliability in extreme situations and increase the safety of operation of subway cars.

The specified technical result in terms of the method is achieved by the fact that in the method of controlling the current collector of the subway car, characterized by the transfer of the current collector from the operating position, in which the shoe is pressed against the conductive rail using a working spring, electric energy is supplied from the conductive rail through the current collector shoe and flexible a shunt on the power electrical equipment of the car, in the idle position, in which the shoe is pressed away from the conductive rail by applying compressed air pressure to the pneumatic cylinder for depressing and is fixed by a locking mechanism to hold the shoe of the current collector in the idle position, while there is no supply of electric energy to the power equipment of the car, and the current collector is switched from the idle position to the working position, to transfer the current collector from the idle to the working position to supply electric energy to the power the car’s electrical equipment first pressurizes the pneumatic cylinder to release the load from the working spring onto the locking mechanism, then serves the pressure in the pneumatic cylinder to unlock and disable the shoe lock mechanism, then release the pressure from the pneumatic cylinder to release, while the shoe is pressed against the conductive rail, and, after that, depressurize the pneumatic cylinder to unlock to return the lock mechanism to its original position.

The specified technical result in terms of the device is achieved by the fact that the current-receiving device containing the base, the insulator, on which the collector shoe is mounted, installed with the possibility of interaction with the conductive rail, a working spring for pressing the collector shoe to the contact rail, a pneumatic cylinder for squeezing the shoe of the current collector from the conductive rail and a locking mechanism for holding the shoe of the current collector in the idle position, is equipped with a bracket mounted on the base, while the mechanism locks to hold the insulator with the shoe in the idle position is located on the bracket and is made in the form of a pneumatic cylinder for unlocking, installed horizontally, a latch mounted to rotate in the horizontal plane, which is a three-arm lever, the upper arm of which is arranged to interact with the rod of the pneumatic cylinder to unlock , and the lower shoulder is located with the possibility of interaction with the locking plate of the insulator, and a sensor for signaling the pressed position Nia shoe, wherein for mounting the insulator axis to the shoe is based on the back side of the base.

In addition, in the current collector, the middle shoulder of the three-arm lever is made in the form of a handle for manually disabling the unlocking mechanism; the current-receiving devices are equipped with an element for adjusting the working spring, made in the form of a bolt located in the upper hinged support of the working spring; equipped with a removable casing for protection against mechanical stress and electric discharges of the components installed on the base of the current collector: equipped with a pad to protect the insulator from the action of the rod of the pneumatic cylinder for pressing, located on the insulator.

The invention is illustrated by drawings.

In FIG. 1 shows a current receiving device, a general view;

in FIG. 2 - the same, general view without a casing;

in FIG. 3, view A in FIG. 2;

in FIG. 4 is the same, view B in FIG. 2;

in FIG. 5 - the same locking mechanism for holding the shoe of the current collector in the idle position;

in FIG. 6 - the same, mounting the working spring.

The current-receiving device (Fig. 1) contains a base 1, an insulator 2 with a shoe 3, mounted with the possibility of interaction with the lower surface of the conductive rail, and the bracket 4 of the flexible shunt. The flexible shunt bracket 4 is intended for fastening power cables through which electric energy is transferred from the conductive rail to the power equipment of the car. The components of the current collector installed on the base 1 are protected by a removable casing 5 to protect against mechanical stress and electrical discharges.

The current-receiving device has two positions: position I - working, in which the current-receiving device is turned on, the shoe 3 is drawn against the conductive rail; position II - inoperative, in which the collector is turned off, the collector shoe 3 is pressed away from the conductive rail.

The base 1 is a supporting structure on which the components of the current receiving device are fixed. On the outer side of the base 1 (Fig. 2), facing the shoe 3, with the help of the angular bracket 6, the pneumatic cylinder 7 for pressing is installed in a vertical position, the upper part of the working spring 8 is fixed, which provides the shoe 3 is pressed against the conductive rail, the bracket 9 of the locking mechanism for holding the shoe of the current collector in the idle position, two fixed limit stops 10, designed to limit the rotation of the insulator 2 with the shoe 3 for the upper overall restriction. The response stops are adjustable buffers 11 mounted on the insulator 2 with the shoe 3. To limit the rotation of the insulator 2 with the shoe 3, a safety stop 12 is fixed to the lower dimensional restriction on the outside of the base 1 (Fig. 3). The response stops are two adjustment bolts 13 installed in the brackets 14 of the working spring 8, mounted on the insulator 2.

On the rear side of the base 1 (Fig. 4), opposite to the shoe 3, two toothed combs 15 are mounted with bolts, which serve to adjust the height of the current collector in order to compensate for the wear of the wheels of the rail vehicle and securely fix the current collector to the reciprocal gear comb in place of installation. To the rear side of the base 1, two brackets 16 are fastened with the axes 17 of the insulator 2 screwed into them, on which the insulator 2 with the shoe 3 rotates relative to the base. Each axis 17 of the insulator 2 from rotation is fixed by the stopper 18 and is located on the rear side of the base 1.

The locking mechanism for holding the shoe of the current collector in the idle position (Fig. 5) is mounted on the bracket 9 and is made in the form of a pneumatic cylinder 19 for unlocking, mounted horizontally, the latch 20, mounted with the possibility of rotation in the horizontal plane, which is a three-arm lever, the upper arm 21 of which located to interact with the rod of the pneumatic cylinder 19 for unlocking, the middle shoulder 22 of the three-arm lever is made in the form of a handle for manually disengaging the unlocking mechanism, and the lower arm 23 is arranged to interact with the locking plate 24 of the insulator 2 by means of a hook 25 mounted on the lower arm 23 and a sensor 26 for signaling the pressed position of the shoe 3.

Using a torsion spring 27, the upper shoulder 21 of the latch 20 is pressed against the rod of the pneumatic cylinder 19 to unlock. A sensor 26 is installed on the bracket 9 of the locking mechanism to hold the shoe of the current collector in an idle position through the insulating plate 28 to signal the pressed position of the shoe 3.

To connect the sensor 26 for signaling the pressed position of the shoe with the electrical system of the car, its electrical wire is brought out in the upper part of the current collector.

The insulator 2 is made of a current-insulating material. On the insulator 2 there are also two spring brackets 14 for attaching the lower part of the working spring 8, two brackets 29 for the axis of the insulator 2 and a cover 30 that interacts with the head of the adjusting bolt 31 installed in the rod of the pneumatic cylinder 7 for pressing, when the current collector is moved from the operating position to idle and back. On the bracket 29 for the axis 17 of the insulator located on the side of the locking mechanism, the bracket 32 is fixed. When the insulator 2 with the shoe 3 is tilted down, the bracket 32 presses the sensor roller 26 to signal the pressed position of the shoe, and the electrical contacts in the sensor 26 and a system for indicating the position of the shoe of the current collector receives a signal informing about the pressed position of the current collector.

The fixation of the insulator 2 with the shoe 3 in the idle position is achieved using two parts - the locking plate 24 and the hook 25 of the latch. When squeezing the shoe 3 (turning the insulator 2 with the shoe 3 down), the locking plate 24 of the insulator comes under the hook 25 of the latch 20, thereby achieving fixation of the insulator with the shoe in the pressed position.

The working spring 8 is mounted on a current collector as follows. The upper part of the spring (Fig. 6) through the bolt 33, the washer 34 of the shock absorber 35, is fixed to the base 1. Moreover, the bolt 33 is installed in the upper spring holder 36 of the working spring 8 and has a lock nut 37. In the lower part of the working spring 8 there is a spring holder 38, in which a stud 39 is connected with the eye 40. A polyamide sleeve 41 is installed in the eye through which the axis 42 of the brackets 14 of the working spring 8 mounted on the insulator 2 passes. Thus, the upper end of the working spring 8 is elastically connected to the base 1, and the lower end is articulated throughthe axis 42 is connected with the insulator 2, which ensures the rotation of the insulator 2 and the pressing of the shoe 3 of the current collector to the conductive rail with the necessary force.

Adjustment of the pressing force of the shoe to the conductive rail is carried out by increasing or decreasing the tension of the working spring 8. Adjusting the tension, therefore, the pressing force, is carried out by rotating the bolt 33 with a loose lock nut 37.

The method of controlling the current-receiving device of a subway car is as follows.

Example 1

To transfer the current collector from the operating position to the inoperative position, a command is made of compressed air for a short time from the driver’s cab to the pneumatic cylinder 7 for squeezing. Under the action of compressed air, the piston of the pneumatic cylinder 7 for pressing out, overcoming the force of the working spring 8, extends downward, with the head of the adjusting bolt 31 screwed into the piston rod, presses the cover 30 mounted on the insulator 2 and turns the insulator 2 with the shoe 3 down to the stop of the adjusting bolts 13 in the safety stop 12. The shoe 3 of the current collector moves away from the conductive rail. The locking plate 24 when turning the insulator downward overcoming the force of the torsion spring 27 retracts the latch 20 and comes under the hook 25 of the latch, after which the latch 20 under the influence of the torsion spring 27 returns to its original position. After the supply of compressed air to the pneumatic cylinder 7 for squeezing out, the insulator 2 under the influence of the working spring 8 is turned up to the stop of the locking plate 24 of the insulator in the lower part of the hook 25 of the clamp 20, as a result of which the insulator 2 of the current collector with the shoe 3 is fixed in the inoperative position. In this case, there is no supply of electric energy to the power equipment of the car.

Example 2

To transfer the current collector from the inoperative position to the working position, on command from the driver’s cab, compressed air is first briefly supplied to the pneumatic cylinder 7 for squeezing. Under the action of compressed air, the piston of the pneumatic cylinder 7 for squeezing, overcoming the force of the working spring 8 with the head of the adjusting bolt 31, presses the pad 30, and turns the insulator 2 with the shoe 3 down to the stop of the adjusting bolts 13 into the safety stop 12. As a result, between the locking plate 24 of the insulator and the bottom of the hook of the latch 25 forms a gap and the latch 20 ceases to act on the load from the working power spring 8. Then, with a slight delay in time relative to the start of the pressure supply to the pneumatic cylinder 7 Iya, compressed air is briefly supplied to the pneumatic cylinder 19 for unlocking. Under the influence of air pressure, the piston of the pneumatic cylinder 19 extends to unlock, rotates the latch 20 and retracts the hook 25 back. At this point in time, the pressure of the compressed air acts simultaneously on the pneumatic cylinder 7 for release and the pneumatic cylinder 19 to unlock. Then, after the supply of compressed air, in the pneumatic cylinder 7 to release the pressure is released. The insulator 2 with the shoe 3 due to the lack of stop of the locking plate 24 in the hook of the latch 25 under the influence of the working spring 8 is rotated up to the stop of the shoe 3 in the conductive rail. After that, after the supply of compressed air, in the pneumatic cylinder 19 to release the pressure is released and the latch 20 under the influence of the torsion spring 27 returns to its original position.

The current collector device operates as follows.

In the operating position, the shoe 3 is pressed against the conductive rail, while the electric energy is supplied from the conductive rail through the shoe of the current collector and a flexible shunt is placed on the power electrical equipment of the car.

If it is necessary to disconnect the power equipment of the car, the transfer of the insulator 2 with the shoe 3 to the inoperative position (squeezing from the conductive rail) is carried out remotely by command from the driver’s cab (example 1) or manually using a rod. For manual squeezing with a bar, press the shoe of the current collector or the lever 22 of the latch 20 until the locking mechanism is activated to hold the shoe of the current collector in the idle position (the locking plate 24 enters under the hook 25).

The transfer of the insulator 2 with the shoe 3 from the inoperative position to the working position (pressing the shoe against the conductive rail) is carried out remotely by command from the driver's cab (example 2) or manually using a rod. To manually press the shoe against the conductive rail, press the bar on the lever 22 of the latch 20. Under the influence of the bar, the latch 20 rotates, the hook 25 of the latch moves back and releases the locking plate 24. The locking mechanism is released. The insulator 2 with the shoe 3 under the influence of the working spring 8 is turned up and the shoe 3 is pressed against the conductive rail.

The system for indicating the pressed position of the shoe of the current collector operates as follows. When the shoe is pressed away from the conductive rail, the insulator 2 with the shoe 3 turns down, the bracket 32 presses on the roller of the sensor 26 and closes the electrical contact in the sensor 26 to signal the pressed position of the shoe. When the contact is closed, a signal informs about the pressed position of the current collector in the display system of the position of the shoe of the current collector. When the shoe is pressed against the conductive rail, the insulator 2 with the shoe 3 is turned upward, the bracket 32 releases the roller of the sensor 26 and opens the electrical contact in the sensor 26 to signal the pressed position of the shoe. When the contact is opened, the signal of the depressed position is absent in the display system.

Claims (6)

1. The method of controlling the current collector of a subway car, characterized by the transfer of the current collector from the operating position, in which the shoe is pressed against the conductive rail with the help of a working spring, while the electric energy is supplied from the conductive rail through the current collector shoe and the flexible shunt to the power electrical equipment of the car is in the idle position in which the shoe is squeezed from the conductive rail by supplying compressed air pressure to the pneumatic cylinder for squeezing and is fixed by a locking mechanism for holding the shoe of the current collector in the idle position, while there is no supply of electric energy to the power equipment of the car, and transferring the current collector from the idle position to the working position, characterized in that to transfer the current collector from the idle to the working position for supplying electric energy to the power electric equipment of the car pressure in the pneumatic cylinder to release to relieve the load from the working spring on the locking mechanism, then apply pressure to the pneumatic cylinder to unlock and open they lock the locking mechanism, then release the pressure from the pneumatic cylinder to release it, while the shoe is pressed against the conductive rail, and, after this, release pressure from the pneumatic cylinder to unlock it to return the locking mechanism to its original position. 2. A current-receiving device containing a base, an insulator on which a current-collecting shoe is located, which is installed to interact with a conductive rail, a working spring for pressing the current-collecting shoe to the contact rail, a pneumatic cylinder for pressing the current collector shoe from the current-carrying rail, and a locking mechanism for holding the current collector shoe inoperative position, characterized in that it is equipped with a bracket mounted on the base, while the locking mechanism for holding the insulator with a shoe m in the idle position is located on the bracket and is made in the form of a pneumatic cylinder for unlocking, mounted horizontally, a latch mounted to rotate in the horizontal plane, which is a three-arm lever, the upper arm of which is arranged to interact with the rod of the pneumatic cylinder to unlock, and the lower arm is located with the possibility of interaction with the locking plate of the insulator, and a sensor for signaling the pressed position of the shoe, and the axis for installing the isolate An ora with a shoe on the base is located on the back of the base. 3. The current-receiving device according to claim 2, characterized in that the middle shoulder of the three-armed lever is made in the form of a handle for manually disabling the unlocking mechanism. 4. The current-receiving device according to claim 2, characterized in that it is provided with an element for adjusting the working spring, made in the form of a bolt located in the upper hinge support of the working spring. 5. The current-receiving device according to claim 2, characterized in that it is equipped with a removable casing for protection against mechanical stress and electric discharges of components installed on the basis of the current collector. 6. The current-receiving device according to claim 2, characterized in that it is provided with an overlay for protecting the insulator from the action of the rod of the pneumatic pressing cylinder located on the insulator.

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