Gear box electro pneumatic door opening of the vehicle

 

Drive relates to the field of Pneumatics and can be used for opening doors of vehicles with the achievement of the technical result consists in increasing the reliability and safety of operation the electropneumatic actuator opening doors of the vehicle by introducing into the design of the drive device for automatic opening of the doors when the jamming of the passenger, as well as an audible signal to the driver when the emergency doors open directly from the passenger compartment. The actuator is equipped with a means of controlling the pressure in the cavity of the air motor for closing the door, made in the form of a pressure switch. Inside the switch housing is formed by two holes with messages cavities relay control with the working cavities of the air motor. The opening of the control pressure in the relay is connected with the rod cavity, another hole with the piston cavity of the air motor. The electrical circuit of the relay through the contacts of the microswitch communicated with electropneumatically, the Manager opened the doors of the vehicle. The valve actuator is equipped with a position sensor rod drive manual duplication with the possibility of interaction is rivada manual duplication. The contact sensor included in the electrical circuit forming a sound signal about opening doors for the driver of the vehicle. 1 C.p. f-crystals, 4 Il.

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

Known actuators opening doors, consisting of a pneumatic cylinder, is used as the actuator, electro-pneumatic dispenser, intended for the direction of the flow of compressed air in one way or another the working cavity of the cylinder depending on the electric signal supplied from the driver's cab (see catalogue "Pneumatic". Simferopol: Tauris, 1999, S. 97).

The closest analogue of the claimed invention is a known actuator PT-2.2.63-116 with separate control leaves the doors of the bus LiAZ-5524, consisting of two coupled single panel electropneumatic, each of which opens one of the doors the doors of the bus (see catalogue "Pneumatic". Simferopol: Tauris, 1999, S. 98, Fig.1).

Known drive contains the maximum number similar to that claimed by the gear box electro pneumatic characteristics, namely: both drives belong to electropneumatically with electro-pneumatic distributor, containing in addition to the spool device two electro-pneumatic control valve and displayed in the passenger compartment of the bus manual drive duplication electrical signal for emergency door opening. Both drives provide an electrical signal to control the lamp open position of the door.

By applying an electric signal to the electro-pneumatic control valve, the spool valve moves axially, directing the flow of compressed air in one way or another cavity of the cylinder, resulting in the movement of the actuating rod, which is when the outward movement opens the door, and when the movement cleaning (inside) - closes the door of the bus.

However, the functionality of the known drive does not ensure safe operation of the vehicle. So, due to the fact that the design of the drive is designed to work with most developing capacity, very high probability of obtaining a passenger injured when pinched his shutters closed the door.

The elements of danger known design has in himself and in the absence of the drive device sound alerts the driver of an emergency (emergency) otkrit, extracted for control in the passenger compartment.

The technical task of the invention is to improve the reliability and safety of operation of the gear box electro pneumatic door opening of the vehicle by introducing into the design of the drive device, providing as the doors close securely impact of its valves per passenger to control the effects and simultaneous automatic removal of doors in the original open position, and an audible signal to the driver when the emergency doors open directly from the passenger compartment by using drive manual duplication of an electrical signal, built-in valve and ejected into the passenger compartment.

This task is solved in that the gear box electro pneumatic provided with a means of monitoring the pressure in the rod end of the cylinder to close the door, when this control is executed in the form of a pressure switch, which body between the cavities management placed axially movable plunger with a ring-shaped ledge on the outer diameter, pre-preloaded compression spring relative to the reference end of the tension screw mounted in realbout messages cavities relay with the working cavity of the cylinder, with the opening of the control pressure in the relay is connected with the rod cavity, another hole with the piston cavity of the pneumatic cylinder and the electrical circuit of the relay through the contacts of the microswitch is in communication with the electro-pneumatic valve valve, the Manager opened the doors of the vehicle.

The drive door opener equipped with a position sensor rod drive manual duplication rigidly connected to the housing of the valve, with the possibility of interaction of squeezing sensor element shaped section of the handle, fixedly mounted on the drive shaft manual duplication, while the contact sensor included in the electrical circuit forming a sound signal about opening doors for the driver of the vehicle.

In Fig.1 shows a General view, section view of the gear box electro pneumatic in the open position nominated by the Executive rod 15 and an open door diagram of the pneumatic lines connecting pyatilineyny two-position valve 1, the air motor 11 and a pressure switch 17 between them.

On the electropneumatic valve opening 2 of the valve 1 filed an electrical control signal.

In Fig.2 shows a General VI is very.

On the electropneumatic valve closing 3 of the valve 1 filed an electrical control signal.

In Fig. 3 shows a General view, section view of the gear box electro pneumatic when the door is closed, when its leaves have been trapped passenger.

On the electropneumatic valve closing 3 of the valve 1 filed an electrical control signal.

In Fig. 4 shows a General view, section view of the gear box electro pneumatic pressing the actuator manual duplication of an electrical signal to the valve 1 to open the door.

The electrical control signal is absent.

Gear box electro pneumatic (see Fig.1) contains: - pyatilineyny dip electropneumatic the spool valve 1 is placed in it two electro-pneumatic valves opening 2 and the closure 3, the cavities 4 and 5 and the drive manual duplication of an electrical signal to the door opening 6 made in the form of an axially movable piston rod cylinder head, on the outer side of which is rigidly fixed handle 7 with shaped (conical) section 8. With the body of the valve 1 is rigidly connected with the two screws sensor 9 of the stroke position of the actuator manually duplicate the sustained fashion the air motor 11 double-acting with the cylinder 12 with the working cavities 13 and 14 and one-way piston, a piston 15, inside of which is screwed ear tip 16 for connection of a door leaf; - pressure switch 17, inside of which between cavities management 18 and 19 has an axially movable plunger 20 with the ring shaped protrusion 21 on the outer cylindrical surface and a preloaded compression spring 22 relative to the reference end of the tension screw 23 mounted in the threaded bore stationary support sleeve 24, and formed two holes 25 and 26, informing the control cavity 18 and 19 of relay 17 with cavities 13 and 14 of the cylinder 12, and the hole of the control pressure 25 is connected with the rod cavity 13, and another hole 26 with the piston cavity 14 of the air motor 11, and the switch housing is rigidly attached sensor (microswitch) 27 provisions of the plunger 20 with the possibility of interaction of squeezing element 28 of the sensor 27 with shaped protrusion 21 of the plunger 20; - a system of pneumatic lines 29 and 30 connecting the valve 1 and the pressure switch 17 between themselves and with the Executive air motor 11.

Gear box electro pneumatic system door control works as follows.

On the electropneumatic valve opening 2 filed electric control signal (see Fig.1).

Under the action of elektricheskaya the passage of compressed air into the cavity 4 of the control spool. The valve is moving to the left extreme position, opens the flow of the working pressure in pneumonia 30 and into the cavity 14 of the cylinder 12. Rod-piston 15 is moved outward (in the released position), opening the door of the vehicle. Compressed air from the left cavity of the pneumatic cylinder 12 is displaced in pneumonia 29 and through the spool valve 1 into the atmosphere.

At the same time the pressure of the compressed air from the pneumatic line 30 enters the pressure switch 17, the control cavity 19. Under the action of the working pressure and the efforts of the compressed spring 22 of the plunger 20 is moved to the stop (up) obestochena sensor 27.

On the electropneumatic valve closing 3 filed an electrical control signal (see Fig.2).

Under the influence of an electric control signal opens the passage of compressed air into the cavity 5 of the control cylinder valve. The valve is moving to the right end position, ensures the supply of operating pressure in pneumonia 29 and the cavity 13 of the cylinder 12.

Rod-piston 15 is moved inward (for cleaning), closing the door of the vehicle. Compressed air from the right cavity 14 is displaced in pneumonia 30 and through the valve 1 and the maturity of the control 18 and acts on the working face of the plunger 20, pre bogatogo on the opposite side of the compression spring 22, the plunger 20 retains its original position due to the fact that when the door is closed expended little energy (only to overcome the friction forces on the seals of the air motor and the pivot nodes kinematic posting) and in the cavity of the closure 13 of the cylinder 12 is developing low pressure compressed air.

In the position of the piston, the piston 15 "on the fence" (fully closed the door leaf in cavity 13 quickly increases the pressure of compressed air to the working values, which moves the plunger 20 is fully inserted in the guide sleeve 24 against the force of the compressed spring 22. When moving the plunger to its ring-shaped ledge 21 through the ball actuates the pressure sensor element 27, closing the electrical circuit feeding an electrical signal to open the door, but this is not the case, as this chain ahead of the torn end sensor pneumatic engine, triggered when fully closed the door.

On the electropneumatic valve closing 3 filed an electrical control signal. Between the doors, the doors have been trapped passenger (see Fig. 3).

When the clamp passenger mignolo values, set relay 17 and a clamping screw 23. The magnitude of this pressure is safe for passengers, however, is sufficient to move (down under the scheme) of the plunger 20 of the relay 17. The plunger 20, overcoming the resistance of the spring 22 causes the contact sensor 27 electrical supply circuit control signal to the electropneumatic valve opening 2 of the valve 1. Sash doors open automatically, freeing the passenger from being pinched. When the door is open (end of the stroke of the piston, the piston 15) the pressure in the cavity 14 of the cylinder 12 increases to the set point at which the plunger 20 is returned to its original (up) position.

The electrical control signal is absent. Drive manual duplication of an electrical signal 6 is pressed (see Fig.4).

Pressing knob 7 drive manual duplication 6, the spool valve 1 is moved to the extreme left position in which the pressure of compressed air supplied to the cavity 14 of the cylinder 12, the piston, the piston 15 extends outward and casement doors open. When the pressure of the pen 7 its profiled section 8 acts on the pressure sensor element 9 and closes an electrical circuit of the audible signal to the driver of the transport opening the door.

Gear box electro pneumatic allows to increase the reliability and safe operation of the vehicle due to: - installation in pneumonia the door closing relay control pressure of the compressed air, providing a safe impact on passenger door leaves with subsequent automatic diversion to the open position; - regulation of the control pressure of the compressed air in the relay, i.e. the moment of the beginning of the automatic operation of the door opening when the jamming of the passenger; - installation in the valve position sensor rod drive manual duplication, the contacts of which are included in the electrical circuit forming a sound when an emergency door opening directly from the passenger compartment.

Claims

1. Gear box electro pneumatic door opening of a vehicle containing pyatilineyny, two-position electro-pneumatic spool of the valve placed in it two electro-pneumatic control valves and actuator manual duplication of an electrical signal to the door opening, actuating the air motor, a double-acting one-way valve and the decomposing those what electropneumatic actuator is equipped with a means of controlling the pressure in the rod end of air motor to close the door, when this control is executed in the form of a pressure switch, inside the housing between the cavities which control is placed axially movable plunger with a ring-shaped ledge on the outer diameter, pre-preloaded compression spring relative to the reference end of the tension screw mounted in the threaded bore of the supporting stationary sleeve with adjustable, and formed two holes with messages cavities relay control with the working cavities of the air motor, and the opening of the control pressure in the relay is connected with the rod cavity, another hole with the piston cavity of the pneumatic engine, and the electric circuit of the relay through the contacts of the microswitch communicated with electropneumatically, managing the opening of the vehicle door.

2. The opening of doors under item 1, characterized in that the valve is equipped with a position sensor rod drive manual duplication, rigidly connected to the housing of the valve, with the possibility of interaction of squeezing sensor element with profiled uceni in the electrical circuit forming a sound signal about opening doors for the driver of the vehicle.

 

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