RU129058U1 - VEHICLE LADDER - Google Patents

Abstract

A vehicle ladder comprising two sidewalls interconnected by steps and pivotally mounted by means of brackets to the vehicle floor, a handrail, a latch for fixing the stairs in the transport position, characterized in that the handrail is pivotally connected to racks that are pivotally mounted on one of the sidewalls of the stairs , and is equipped with stoppers for fixing the racks of the handrail with the sidewall of the stairs in the transport and working positions.

Description

The utility model relates to the equipment of railway cars, namely, to the design of the stairs of the cars.

A device is known for emergency exit from a subway car. The car is equipped in the frontal part with an emergency exit device, comprising a door mounted on the frontal part of the car, a ladder and a mechanism for attaching the stairs to the frontal part of the car. When an emergency occurs, open the door, lower it onto the rail-sleeper grid and bring the ladder into working position. (RU patent No. 2123950, IPC B61D 23/00, 1998).

The disadvantages include:

- the emergency exit device is not equipped with handrails, which significantly affects the safety of the evacuation of passengers;

- the need to go down on the rail-sleeper grid to bring the stairs into position.

Known wagon equipped with a device for emergency exit, which in the transport position is located in the niche of the end wall of the passenger compartment. The device consists of a platform and a folding sectional ladder, which is pivotally mounted on the end of the L-shaped pivot arm with the possibility of rotation around it, the other end of the L-shaped pivot arm is mounted on the car body using a bracket, with the possibility of rotation in a horizontal plane by 180 ° and locking mechanism in the transport position and the latch. The platform and folding sectional ladder are equipped with handrails consisting of two parts - upper and lower, which are made folding. To fix the handrail in the working position, a mechanism is installed, consisting of a bracket cam, on which a reclining stop pivotally supported by a leaf spring and a ring is pivotally mounted. The upper part of the handrail is connected to the lower pivotally through the axis with a jumper. To fix both parts in the working position, in the middle part there is a mechanism consisting of washers that perform the function of spring stops and bushings mounted for movement along the longitudinal axis of the handrail (RU Patent No. 99755 U1, IPC B61D 23/00, 2010).

The disadvantages of this technical solution is the increased complexity of the transfer of the handrail from the transport position to working.

The technical result of the proposed utility model is the compactness of the handrail in the transport position, the reduction in the complexity of the transfer of the handrail of the stairs from the transport position to the working one when evacuating people in emergency conditions.

The specified technical result is achieved by the fact that the staircase of the vehicle contains two sidewalls interconnected by steps, the sidewalls hinged by means of brackets to the floor of the vehicle, a handrail, a latch for fixing the stairs in the transport position, the handrail is pivotally connected to racks that are pivotally mounted on one of the sidewalls of the stairs, and is equipped with stoppers for fixing the racks of the handrail with the sidewall of the stairs in the transport and working positions.

Figure 1 shows the ladder of the vehicle in the transport position.

Figure 2 is a view A of figure 1.

Figure 3 - shows a ladder with a handrail in the working position.

The staircase of the vehicle consists of two sidewalls 1 (1, 2, 3), interconnected by steps 2. The sidewalls 1 are pivotally mounted with brackets 3 mounted on the floor 4 of the vehicle. The handrail 5 through the hinges 6 is connected to the uprights 7, which are hinged 8 mounted on one of the sidewalls 1 of the stairs. The stoppers 9 (Fig. 1) fixes the racks 7 of the handrail 5 with the sidewall 1 of the ladder in the transport and working positions. For convenience and quick translation of the ladder from the transport position to the working one and vice versa, the belt 10 (FIG. 2) of flexible non-stretch material is attached at the first step 2 of the ladder from the opposite side of the brackets 3. In the transport position, the ladder is installed in the doorway 11 and is held by the latch 12. The handrail 5 with the uprights 7 in the transport position is located along the sidewall 1 of the ladder.

To transfer the stairs and the handrail from the transport position to the working position, the following operations must be performed:

1. Turn the stop knob 9.

2. Install the racks 7 of the handrail 5 perpendicular to the sidewall 1 and the handrail 5.

3. Using the stopper handle 9, fix the working position of the stairs with the handrail 5.

4. Release the ladder from the latch 12.

5. Lower the ladder, holding the belt 10. To transfer the ladder to the transport position, it is necessary to perform the above operations in reverse order.

This design of a staircase with a handrail will allow for safe evacuation in the event of an emergency, compactly position the handrail with the staircase in the transport position, and reduce the complexity of transferring the staircase handrail from the transport position to the working one without leaving the vehicle.

Claims (1)

A vehicle ladder comprising two sidewalls interconnected by steps and pivotally mounted by means of brackets to the vehicle floor, a handrail, a latch for fixing the stairs in the transport position, characterized in that the handrail is pivotally connected to racks that are pivotally mounted on one of the sidewalls of the stairs , and is equipped with stoppers for fixing the racks of the handrail with the sidewall of the stairs in the transport and working positions.

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