The actuator door motor vehicle

 

The actuator door of the vehicle relates to the field of Pneumatics and can be used as an actuating mechanism for opening and closing shutters of doors of buses and trolleybuses. The actuator door consists of a pneumatic cylinder, valve and emergency valve, connected by a flexible pipe. To avoid loss efforts on the leaves of doors in case of emergency loss of pressure in the pneumatic system in the working cavity of the pneumatic cylinder, which is responsible for closing the shutters of doors, built-in shut-off valve which automatically locks the air pressure in the working cavity of the pneumatic cylinder. 1 Il.

The invention relates to the field of Pneumatics and can be used for opening doors of vehicles.

Known pneumatic door bus LiAZ-5254, consisting of a panel, which includes a pneumatic cylinder that is used as the actuator, and valve intended for the direction of the compressed air pressure in one or the other working cavity of the pneumatic cylinders depending on the electric signal supplied from the driver's cab (see catalogue "Pneumatic". Simferopol: Tauris, is usnote is the actuator of a door of the vehicle, contains General panel of the pneumatic cylinder, the valve and the emergency valve connected by flexible piping (DE 3506138 A1, 28.08.1986).

A disadvantage of the known construction is that in case of emergency loss of air pressure in the pneumatic system is lost effort on the wings of the doors, holding them in the closed position, which is especially dangerous when driving a vehicle.

The technical result achieved in this invention is the elimination of losses closing effort on the leafs during an emergency loss of pressure in the pneumatic system.

This technical result is achieved by the fact that the pneumatic doors of the vehicle containing the General panel of the pneumatic cylinder, the valve and the emergency valve connected a flexible pipe according to the invention in the working cavity of the pneumatic cylinder, which is responsible for the closing of the door leaves, integrated shut-off valve for automatic locking of the pressure in the working cavity of the cylinder in case of emergency loss of pressure in the pneumatic system.

Supply air pressure in the working cavity of the cylinder, closing the door leaf, is fed through a check valve, which control who plays the air pressure in the working cavity of the pneumatic cylinder and opens when the pressure is applied in the opposite cavity. In case of emergency loss of pressure in the pneumatic system shutoff valve automatically closes the air pressure in the working cavity of the pneumatic cylinder, the retaining force of the closing door leaf. In this case, to open the door leaf can manually scouring air pressure safety valve.

The essence of this invention is illustrated in the drawing, which shows a General scheme of the pneumatic actuator.

The actuator holds the valve 1, the working pneumatic cylinder 2 with the working cavities 3 and 4, and emergency manual valve 5, which are connected by flexible pipes. On the front flange of the working cylinder is installed shut-off valve 6, consisting of a body 7, the locking element 8, bogatogo spring 9, the pusher 10, the working cavity 11 and the control cavity 12.

For carrying out the process of closing shutters of doors, the valve 1 gives the pressure in the working cavity 11 shut-off valve 6, the pressure of the air against the force of spring 9, opens the locking element 8 and into the working cavity 3 of the cylinder 2. The cavity 4 of the cylinder 2 through the valve 1 is connected with the atmosphere.

After closing the door leaves the pressure in the cavities 3 and DRA 2.

In case of emergency loss of pressure in the pneumatic system pressure in the cylinder is maintained, holding the sash in the closed position. Deflating is possible by rotation of the valve emergency valve 5. This pneumonia applying pressure in the actuator, clipped, and the cavity 3 of the pneumatic cylinder is connected with the atmosphere.

During normal operation of the drive opening of the valves is as follows: the valve 1 delivers air pressure into the cavity 4 of the cylinder 2 and at the same time in the control cavity 12 shut-off valve 6. Since the area of the pusher 10 larger than the area of the locking element 8, the plunger 10 against the force of the spring 9 and the pressure of the air trapped in the cavity 3, is moved to the right, opens the locking element 8 and connects the cavity 3 and 11 through the valve 1 with the atmosphere.

Claims

The actuator door motor vehicles, containing General panel of the pneumatic cylinder, valve, emergency valve, connected by flexible pipes, characterized in that in the working cavity of the pneumatic cylinder, which is responsible for the closing of the door leaves, integrated shut-off valve providing machine

 

Same patents:

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