Pyatilineyny two-position valve valve drive vehicle doors

 

(57) Abstract:

The valve relates to the field of pneumatic devices for changing the direction of flow of the compressed air in the pneumatic lines of the pneumatic actuators are mainly vehicles depending on the control action. In the valve the valve has a built-actuator fixed manual duplication of an electrical signal, made in the form of an axially movable piston rod locking device consisting of a valve body in the form of a ball in contact with the tapered annular groove of the drive shaft. This design gives the opportunity to open a vehicle door and hold it open at the termination of the external load on the drive shaft manual duplication. 3 Il.

The invention relates to the field of pneumatic devices and is intended for direction changes and (or) start (stop) the flow of compressed air in the pneumatic lines of the pneumatic actuators are mainly vehicles depending on the control action.

Known pneumatic different designs that control the pneumatic cylinders opening dvere what tricom, valve and crane. Due to the simplicity and manufacturability have been used pneumatic cylindrical spool, but due to considerable mechanical wear of elastomeric seals they have low resource and failures at low ambient temperatures, which limits the possibility of wide application of this construction to the valves actuators control the doors of the vehicles.

Figure 27 page 42 industry directory of the Ministry of the machine tool industry of the USSR "Elements and devices of pneumatic high pressure", M, 1990 shows the structure of three-way valve valve with solenoid control type P-re 3/1. For manual duplication of an electrical signal button 8. Pushbutton control by pressing button 8 until it stops, it goes anchor 4. Return the manual duplication to its original position by the spring 2. The inclusion of fixed manual duplication is carried out by rotation of the Cam 6 (see Fig.28, page 43) counterclockwise until it stops, with the red dot on the Cam is labelled "Rev. " This design is Oia friction movement of the valve has a higher life, preserves the integrity and performance in conditions of low ambient temperatures, but shows the valve with actuator manual duplication of an electrical signal constructively challenging and remote location of the pressure element, which limits the use of this design in pneumatic actuators control the doors of the vehicle directly from the passenger compartment.

Way fixed manual control by turning the Cam (instead of push-button control), and low discharge characteristics impose additional restrictions on the use of the specified valve.

The closest in technical essence is a two-position three-way valve valve type P-P13 with one-way electropneumatic control and spring return to its original position ( ibid, S. 51, Fig. 37). This type of dispenser can be integrated into the overall layout of the actuator in any position, however, this design has a fixed manual duplicated (without elektrosignal) control valve spool, which should keep the door open at the termination (withdrawal) effects of external load (pressure) on the drive shaft manual duplication of an electrical signal in cases for example, emergency door opening for emergency evacuation of passengers or in other extreme situations.

The technical object of the present invention is to provide pyatilineyny two-position valve valve to provide emergency door opening of the vehicle manually directly from the passenger compartment with the possibility of keeping the door open at the termination(withdrawal) effects of external loads(pressure) from the rod drive manual duplication.

This problem is solved by the fact that pyatilineyny two-position valve valve actuator of the vehicle doors, comprising a housing, two parallel spaced valve with four locking elements of type "valve seat", electro-pneumatic control valve and system of working channels and pneumatic lines connecting the valves between them and the Executive mechanism according to the invention in the valve that controls the opening of the shutters of doors, by supplying a command pressure coaxially with the valve built drive fixed manual duplication of an electrical signal, made in the form of an axially movable piston rod fix the Oia valve body and cooperating mechanism of correction efforts preload locking member to the drive shaft, thus locking the body in the form of a ball that is in contact with one side of the correction mechanism efforts preload - through pressure disc, pre-preloaded compression spring relative to the reference end of the tube that is installed in the threaded bore of the housing with the possibility of regulation, and on the other annular groove of the drive rod, and the surface interaction of the rod is made conical with the apex of the cone directed towards the open end (tube), and the locking device is mounted in the median plane of the valve at an acute angle to the direction of translational movement of the drive rod.

In Fig. 1 shows a General view, section pyatilineyny two-position valve valve with actuator fixed manual duplication of the electric control signal is in the open position and the circuit of the pneumatic lines connecting the valve with pneumatic cylinder control doors. On the electropneumatic valve 12 filed an electrical control signal.

In Fig. 2 shows a General view, section pyatilineyny two-position valve valve with actuator fixed manual duplication electrical control signal to close the ez pyatilineyny two-position valve valve with actuator fixed manual duplication electrical control signal, in which the valve is "open" opened by pressing the drive rod fixed manual duplication 22. The drive shaft 22 is locked with the locking device 17. The electrical control signal is absent.

The valve (see Fig. 1) includes a housing 1 with channels 2 and 3 of the control cylinder 4 with the working cavities 5, 6 and the piston rod 7, with channels 8 and 9 release air to the atmosphere, with the channel of the head 10 with a channel 11 feed command pressure from the electro-pneumatic valve 12 to the valve "closed" 13 and "open" 14 at the same time. Valve "closed" 13 from the side of the channel 11 is closed by a cover 15, and the valve is "open" 14 - coaxial drive fixed manual duplication of an electrical signal with an integrated locking device 17 comprising placed in the guide bores 18 and 19 of the housing 16 with the possibility of axial movement of the locking member (ball) 20 and interacting with the mechanism of correction efforts preload 21 of the locking member 20 to the drive shaft 22.

With shut-off ball 20 with one hand in contact correction mechanism 21 through the clutch disk 23, a pre-preloaded compression spring 24 relative to the reference end of the tube 25 mounted in the threaded bore 26 koonya, directed towards the open end (s 28). The locking device 17 is installed in the median plane of the valve "open" 14 at an acute angle to the direction of translational movement of the drive rod 22.

The valve in the system, pneumatic door control works as follows.

On the electropneumatic valve 12 filed an electrical control signal (see Fig. 1).

Under the influence of an electric control signal anchor electropneumatic valve 12 "retracted" (moves up), opening the passage of compressed air from channel 10 channel 11 feed command pressure, under which the valves 13 and 14 are moved to the leftmost position, thus locking the seal valve 14 moves away from the saddle straddle sleeve, opening the flow of the operating pressure in channel 2 and the cavity 6 of the pneumatic cylinder. The piston-rod 7 moves outward (in the released position), opening the door of the vehicle. Compressed air from the left cavity 5 of the cylinder 4 is pressed into the channel 3 and through the valve 13 and the channel 8 into the atmosphere.

The electrical control signal is absent (see Fig. 2).

Under the action of the working pressure, the supply, this working pressure supplied through the valve "open" 13 enters the channel 3 and the left cavity 5 of the cylinder 4, the piston-rod 7 is moved inward (in retracted position), closing the door of the vehicle. Compressed air from the right cavity 6 of the cylinder 4 is pressed into the channel 2 and through the valve 14 and the channel 9 into the atmosphere.

The electrical control signal is absent. The drive shaft manual duplication 22 is pressed (see Fig.3).

When the pressing rod drive manual duplication 22 (buttons 28) valve "open" 14 is moved to the leftmost position, the locking seal valve moves away from the saddle straddle sleeve, opening the flow of the operating pressure in channel 2 and the cavity 6 of the cylinder 4. In the cavities 5 and 6 of the pneumatic cylinder are set to the same working pressure, but because of differentialmode of the piston-rod 7 the latter is moved to the extreme left (released) position, opening casement doors of the vehicle and squeezing compressed air from the cavity 5 of the cylinder 4 into the channel of the head 10.

Down the drive shaft 22 automatically is now a spring-loaded locking ball 20 by entering it in the annular tapered groove 27. When precieux, when this annular tapered groove 27 of the rod 22, in addition to fixing, at the same time provides a preload valve seal valve 14 to the right saddle straddle the sleeve, providing a snug fit and tightness of the valve. Sash doors remain open.

The return of the drive rod manual duplication 22 to its original position and its "unfixing" manually using the button 28 or by applying an electrical control signal, wherein the command working pressure of the air entering the channel 11, the effect on the working area of the drive rod 22 and moves it. When moving the annular tapered groove 27 of the rod 22 against the force bogatoi spring 24 correction mechanism 21, squeezes shut-off ball 20 of the fixing device 17 into the guide bore 18 of the housing 16.

Pyatilineyny two-position valve valve actuator of the vehicle doors, comprising a housing, two parallel spaced valve with four locking elements of type "valve seat", electro-pneumatic control valve and system of working channels and pneumatic lines connecting valves between themselves and the actuator, valve, previousnode manual duplication of an electrical signal, made in the form of an axially movable piston rod locking device, comprising placed in the guide bores of the housing with a possibility of axial movement of the locking member and cooperating mechanism of correction efforts preload locking member to the drive shaft, thus locking the body in the form of a ball that is in contact with one side of the correction mechanism efforts preload - through pressure disc, pre-preloaded compression spring relative to the reference end of the tube that is installed in the threaded bore of the housing with the possibility of regulation, and on the other annular groove of the drive rod, and the surface interaction is made conical, with the apex of the cone, directed towards the open end, and the locking device is mounted in the median plane of the valve at an acute angle to the direction of translational movement of the drive rod.

 

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