RU2641407C1 - Device for emergency exit from metro car - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: device for emergency exit from a metro car comprises a door installed on the front of the car, a removable ladder (16), and a mechanism for fastening the ladder to the front of the car in its working position. A mechanism for locking and fixing the door is mounted in the door frame. Under the floor of the operator's cab, there is a subframe (17) made flap in the working position and hingedly connected with one end to the body frame (18). The mechanism for fixing the subframe with the ladder comprises a housing fixed to the body frame (18), a handle arranged in the operator's cab floor and connected by a system of links and shafts with a spring-loaded latch, and safety hooks for engaging with the subframe (17). The spring-loaded latch with the possibility of interaction with the subframe (17) and a stopper preventing bringing the subframe (17) in the transport position without the ladder (16) are mounted in the housing.

EFFECT: invention improves the device reliability and ensures fast and safe evacuation of passengers in the event of an emergency.

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Description

The invention relates to railway transport, and in particular to devices for evacuating passengers from the driver’s cab of a subway car in case of an emergency in the tunnel and on the ground sections of the subway.

A device is known for emergency exit of a rail rolling stock from a car, comprising a door mounted on the side of the car body, a ladder-ladder located under the body floor and fixed in the mounting frame, a ladder-ladder opening mechanism and a ladder fixing device (CN patent No. 203126860, B61D 23/02, 08/14/2013).

This device does not provide fast evacuation of passengers, as located on the side of the car body and makes it difficult for passengers to exit in an emergency in the subway tunnel.

A device for emergency exit from the driver’s cab of the subway car, comprising a door mounted on the front of the car, a removable ladder and a mechanism for attaching the stairs to the front of the car in the working position (patent RU No. 2123950, IPC B61D 23/00, 12/27/1998).

The known device does not provide fast, reliable and safe evacuation of passengers in case of emergency, because the removal of two sections of the stairs from the front of the car, their connection with brackets and fastening to the front of the car in the working position takes considerable time, and the absence of steps is unsafe during the evacuation of elderly people and children.

The objective of the claimed invention is to ensure the safety of the carriage of passengers in subway cars in the event of an emergency.

The technical result when using the invention is to increase the reliability of the device and ensure quick and safe evacuation of passengers in case of emergency.

The specified technical result is achieved in that the device for emergency exit from the subway car, comprising a door mounted on the front of the car, a removable ladder and a mechanism for attaching the stairs to the front of the car in the working position, further comprises a mechanism for locking and fixing the door in the doorway, a subframe for placing the stairs and the mechanism for fixing the subframe with the stairs in the transport position, while the door locking and fixing mechanism is mounted in the door frame and connected with the frontal part of the carriage on, the subframe is located under the driver's cab floor near the emergency exit and is folded in the working position, with one end of the subframe pivotally connected to the body frame and the other end located on the emergency exit side free, while the mechanism for fixing the subframe with the ladder contains a body, fixed to the body frame, in which a spring-loaded latch is mounted with the possibility of interaction with the subframe, and a stopper preventing the subframe from being brought into transport position without a ladder, as well as koyatku placed in the floor of the cab and connected system of rods and shafts with a spring-loaded latch, harnesses and hooks for engagement with the subframe rigidly fixed to one of the shafts.

In addition, to achieve the above technical result, the mechanism of locking and fixing the door in the doorway is made in the form of fingers located on the sides of the frame of the door, placed in the inclined grooves of the frame of the frontal part of the car with the possibility of movement through a system of rods connected with a handle mounted on the inside side of the door; the mechanism for attaching the removable ladder to the frontal part of the car in the working position contains grooves located in the upper part of the ladder and pins placed therein with the possibility of interaction, rigidly connected to the body frame under the emergency exit doorway; for holding the subframe in the working position at a certain distance from the upper level of the rail head, contains a safety cable connecting the body frame to the free end of the subframe; to prevent the stairs from falling out of the subframe in the working position, a safety lock is installed on the free end of the subframe.

The invention is illustrated by drawings, where

in FIG. 1 shows the head subway car with a device for emergency exit from the driver’s cab in a transport position, general view;

in FIG. 2 is a view A of FIG. one;

in FIG. 3 shows a section BB in FIG. 2;

in FIG. 4 shows the head subway car with a device for emergency exit from the driver’s cab in the working position, general view;

in FIG. 5 shows the mechanism for fixing the subframe with a ladder in a transport position;

in FIG. 6 shows the remote control B in FIG. 5;

in FIG. 7 shows the remote element G in FIG. four;

in FIG. 8 is a view D in FIG. 5.

The device for emergency exit from the driver’s cab of the subway car contains a door 1 (Fig. 1, 2) installed in the doorway 2 of the front part of the head car 3, a windshield 4 on rubber seals 5, installed in the front part of the car body 3, and a cord ( not shown) located in the rubber seal 5 of the windshield 4, installed with the possibility of extraction from the window opening 6.

The door 1 is installed in the doorway 2 with the possibility of removal for the evacuation of passengers on the rail track. The emergency exit door 1 (Fig. 3) consists of an outer panel 7, an inner lining 8, a frame 9, and a locking and fixing mechanism for the door 1 in the doorway 2 integrated into the frame 9. The locking and fixing mechanism of the door is made in the form of fingers 10 for holding the door 1 in the doorway 2, located on the sides of the frame 9 and placed in the inclined grooves 11 of the platens 12, which are part of the frame of the frontal part of the car. The fingers 10 are installed in the grooves 11 with the ability to move when removing and installing the door 1 through a system of rods 13 connected with a handle 14 mounted on the inside of the door 1. The door is pressed by the door seals 15 around the perimeter of the frame 9.

The mechanism of locking and fixing the door 1 ensures its reliability in the closed position, tight tight fit in the doorway 2, prevents unauthorized or accidental opening of the emergency exit.

For quick and safe evacuation of passengers from the car, a removable ladder 16 is provided (Fig. 4, 5), placed in the transport position in the subframe 17. The subframe 17 is located under the driver's cab floor near the emergency exit. One end of the subframe 17 is pivotally connected to the body frame 18. The other end of the subframe 17, located on the emergency exit side, is made free, reclining in the operating position (Fig. 4).

In the working position, the removable ladder 16 is mounted on the frontal part of the car. The mechanism for attaching the removable ladder 16 to the frontal part of the car in the working position contains grooves 19 made in the upper part of the ladder 16, and pins 20 placed therein with the possibility of interaction, fixed under the emergency exit doorway and rigidly connected to the body frame 18.

In the transport position (Fig. 5, 6), the subframe 17 with the ladder 16 is fixed by means of a locking mechanism. The mechanism for fixing the subframe with the ladder comprises a handle 21 located in the floor of the driver’s cab. The handle 21 is mounted on the rod 22, which actuates the lever 23 with a groove hole. The lever 23 is fixed to the drive shaft 24. The safety hooks 25 and the lever 26 are rigidly fixed to the same shaft 24. The safety hooks 25 are in the transport position in engagement with the pipe 27, which is part of the subframe 17. The lever 26 is connected to the movable spring-loaded latch 28 through the rod 29.

The latch 28 (Fig. 7, 8) is mounted in the housing 30 of the locking mechanism, mounted on the frame of the body 18 and installed with the possibility of interaction with the pipe 27 of the subframe 17. The latch 28 has a rod with a thrust washer 31 at the end, a spring 32. The locking mechanism of the subframe 17 with a ladder 16 is equipped with a stopper 33, preventing the subframe 17 from being brought into transport position without a ladder 16. The stopper 33 is made in the form of a swinging foot on an axis 34 installed in the housing 30. In the transport position (Fig. 6), the stopper foot 33 contacts its surface with the step stairs 16, located in the subframe 17. Stop 33 allows the driver in the cab to control the position of the subframe 17 and, consequently, the possibility of starting movement without risking damage to the wagon structure.

In the event of a breakage or failure of the latch 28, the hooks 25 hold the subframe 17 with the ladder 16 in the raised (transport) position.

Holding the subframe 17 in a working position at a certain distance from the upper level of the rail head when removing the removable ladder 16 from it is carried out by means of a safety cable 35 (Fig. 4) connecting the body frame 18 with the tilting end of the subframe 17. To prevent the ladder 16 from falling out of the subframe 17 , in the working position, at the free end of the subframe a safety latch 36 is installed.

A device for emergency exit from the subway car works as follows.

When an emergency occurs, open an emergency exit from the driver's cab. The driver previously removes the windshield 4 by pulling the cord from the rubber seal 5 of the glass. Then pulls the handle 14 up, and through the system of rods 13, the fingers 10 are moved upward, sliding along the inclined grooves 11 of the plates 12, thereby ensuring that the door 1 is pressed away from the doorway 2 and removed from the inclined grooves 11. Holding the door 1 by the handle 14, the driver sets her aside, freeing the passage out.

Having opened the emergency exit, the driver sets the subframe 17 with ladder 16 into working position. For this, he pulls up and rotates the handle 21 in the cab floor. The handle 21 by the system of rods 22 and shafts 24 interacts with the spring-loaded latch 28, disengaging it from the tube 27 of the subframe 17. The safety hooks 25 on the drive shaft 24 also disengage from the tube 27 of the subframe 17. The free end of the subframe 17 is tilted down by its own weight. The paw of the stopper 33 drops down. When the latch 28 is disengaged from the pipe 27 and the paw of the stopper 33 is lowered, the spring 32 tends to return the latch 28 to its original position. The thrust washer 31 abuts against the shoulder of the paws and prevents the latch 28 from returning to its original position.

A safety cable 35 holds the subframe 17 at a certain distance from the upper level of the rail head.

After putting the subframe 17 with the ladder 16 into working position, the driver descends from the cab onto the rail track, removes the ladder 16 from the subframe 17, having previously pulled the safety lock ring 36 upwards. Then the driver fixes the ladder 16 on the frontal part 3 of the car, aligning the grooves 19 with the pins 20. The lower step of the ladder 16 is supported on the rail.

Emergency exit ready to evacuate passengers.

Claims (5)

1. Device for emergency exit from the subway car, comprising a door mounted on the front of the car, a removable ladder and a mechanism for attaching the stairs to the front of the car in the working position, characterized in that it further comprises a mechanism for locking and fixing the door in the doorway, a subframe for the placement of the stairs and the locking mechanism of the subframe with the stairs in the transport position, while the locking and fixing mechanism of the door is mounted in the door frame and connected to the frontal part of the car, the subframe is located under the driver’s cab is near the emergency exit and is tilted in the working position, one end of the subframe pivotally connected to the body frame and the other end located on the side of the emergency exit free, while the mechanism for securing the subframe with the ladder contains a body mounted on the body frame, in which a spring-loaded latch is mounted with the ability to interact with the subframe, and a stopper preventing the subframe from being brought into transport position without a ladder, as well as a handle located in the cab floor the driver’s name and connected by a system of rods and shafts with a spring-loaded latch, and safety hooks for engaging with a subframe, rigidly fixed to one of the shafts. 2. The device according to p. 1, characterized in that the mechanism for locking and fixing the door in the doorway is made in the form of fingers located on the sides of the frame of the door, placed in the inclined grooves of the frame of the frontal part of the car with the possibility of movement through a system of rods connected with a handle, mounted on the inside of the door. 3. The device according to claim 1, characterized in that the mechanism for attaching the removable ladder to the frontal part of the car in the working position contains grooves located in the upper part of the ladder and pins placed therein with the possibility of interaction, rigidly connected to the body frame under the emergency exit doorway. 4. The device according to claim 1, characterized in that for holding the subframe in the working position at a certain distance from the upper level of the rail head, it contains a safety cable connecting the body frame to the free end of the subframe. 5. The device according to claim 1, characterized in that in order to prevent the staircase from falling out of the subframe in the working position, a safety lock is installed on the free end of the subframe.

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