Two-positioned valve air-distributor for actuator of vehicle doors

FIELD: fluid-pressure actuators.

SUBSTANCE: air distributor comprises plunger-actuator of the manual doubling of electric signal mounted inside the hosing and provided with the chamber for its control from the external source of the air signal.

EFFECT: enhanced reliability.

1 cl, 4 dwg

 

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 pneumatic actuators, mainly vehicles, depending on the control action.

Known pyatilineyny two-position valve valve according to patent DE 2553250 C3 F 15 B 13/042, 19.03.1981, p.5. The design of the valve according to patent DE provides manual override electrical signal by using the Cam-Cam 73. The inclusion of manual duplication by turning the Cam-Cam 73 around its Central axis, but shows the valve with actuator manual duplication of an electrical signal structurally and technologically made complex and difficult to access location of the drive element. The way of manual duplication by turning the Cam-Cam (instead of push-button control) imposes a limitation on the use of the above design of the valve to the actuator door control vehicles directly from the passenger compartment.

Closest to the technical nature of analogue and prototype of the claimed invention is known pyatilineyny two-position valve valve actuator the doors of the vehicle patent RU 2208187 C2 7F 15 13/10 dated 10.07.2003,, Bulletin No. 19. This valve contains the maximum amount similar to that claimed by the valve characteristics, namely both valve are pyatilineyny two-position valve and is designed for use in pneumatic door control vehicles and each of which includes a housing, two valves opening and closing with four locking elements of type "valve-seat, pneumatic control valves, electro-pneumatic control valve, actuator manual duplication of an electrical signal and system of working channels and pneumatic lines connecting the valve and actuator manual duplication of an electrical signal between themselves and with the Executive mechanism.

By virtue of the known valve valve prototype is that he is at work in the pneumatic actuator provides emergency pneumatic door opening of the vehicle manually from the passenger compartment with the most developed pneumatic pushing force with simultaneous retention of the vehicle doors open at termination (withdrawal) load (pressure) on the drive shaft manual duplication of an electrical signal without the use of additional fixing devices.

Structurally it DOS ikaetsya by insertion into the body of the valve, in the supply line command pressure, the check valve with the forward direction of transmission of the working environment and drive a manual duplication of an electrical signal, made in the form of a stepped axially movable plunger.

However, the known valve does not have sufficient reliability and performance due to the applied and installed in-line control valves closing and opening the check valve with ball shut-off body. On the one hand, this valve to ensure that performance should provide rapid transmission through itself displaced air in the electropneumatic valve and the atmosphere in the absence of an electrical control signal (when the door is closed).

On the other hand, the valve must be tight enough to for a long time to maintain the desired pressure in the supply system in the case of manual duplication - the door is opened manually from the passenger compartment.

Inherent to the design of the valve is low and unstable tightness, and increased sensitivity to pollution supplied air under pressure causes a fairly wide dispersion and low quality of the dynamic characteristics of a valve and actuator in General and associated with proizvoditelnos leakage (flow) of compressed air from the supply air system to the atmosphere in the manual duplication.

The use of a check valve in addition to the constructive-technological complexity increases the complexity and cost of manufacture of pneumatic.

It should indicate that the functionality of the above valve prototype does not provide a guaranteed full and safe operation of the vehicle in emergency or other situations due to the fact that design is not possible emergency remote control of pneumonectomies by filing a pneumatic control signal generated outside of the passenger compartment using any power supply (main, backup, or offline).

The totality of the above disadvantages limits the possibility of practical application of the known pneumatic the pneumatic door control vehicles.

Technical task for execution by the invention is to remedy these disadvantages and, while maintaining the preferential performance of the valve prototype, creating a more compact, cost-effective, reliable and fast pyatilineyny two-position valve valve for wide application in pneumatic circuits on the I opening doors of vehicles.

Another object of the present invention is the enhanced operational capabilities of the valve and increase the operating safety of the vehicle by providing emergency door opening of the vehicle with the most developed pneumatic power manually from the passenger compartment, and remotely using the pressure signal generated either by pressing the appropriate buttons in the cab, or by pressing one of the control buttons embedded on the outside of the body of the vehicle, with automatic holding the door open after removal of the pressure signal (stop pressing the remote control button).

These tasks are solved by the fact that in pyatilineyny two-position valve valve actuator of the vehicle doors, comprising a housing, two valves opening and closing with four locking elements of type "valve-seat, pneumatic control valves, electro-pneumatic control valve, plunger-actuator manual duplication electrical signal control and working channels and pneumatic lines connecting the valves between them and the Executive mechanism according to the invention the plunger-actuator manual duplication of the electric control signal is of built-in supply line command pressure between the electro-pneumatic control valve - the source of the command pressure and the valve closing and opening is made in the form dvuhpotokovogo plunger one-way closed cylindrical ledge (stem), each band of the plunger is provided with two outer o-rings and formed between the annular discharge groove, the plunger is mounted inside the hollow cylindrical guide bore of the casing with the formation of cavities distribution and control, with the possibility of a limited axial movement and constant contact of the outer seal and the ledge with the surfaces of the bore of the casing and covering fixedly installed in the housing retaining the stepped sleeve, interacting with their working edges of the stripes formed on the surface of the bore of the housing cut-off edges radially directed control channels, and in the initial position of the plunger, the supply channel command pressure from the electro-pneumatic valve and the control channels of the valves closing and the opening formed in the bore of the housing provided between mipoesias annular cavity of the plunger, an annular discharge groove belt plunger located from the bottom of a blind bore of the housing, in communication with the discharge channel, and a cavity bounded by the bottom of a blind bore of the housing and the end face of the plunger is, constantly connected with the cavity of the electro-pneumatic control valve, in addition, according to the invention the plunger-actuator manual duplication of an electrical signal supplied with control chamber formed by the walls of the guide cylindrical bore of the housing and the respective ends of condensed on the outer surface of the plunger and covering his restraint stepped sleeve, and the sleeve is sealed to the outer and inner surfaces, and formed with a chamber communicated with an external source of pneumatic control signal, and guides the cylindrical bores of the housing and a stepped sleeve plunger-actuator on the peripheral surfaces of the belts and bench set with guaranteed annular gaps.

Through the rationalization of the working schematic diagram of the valve of the valve and exceptions to its design check valve with ball shut-off body significantly improve the quality and conditions of operation of the valves opening and closing of the valve, for controlling its dynamics, sensitivity and speed, and due to the built in drive manual duplication electrical signal to control the camera from an external source of pressure is more safe operation of the vehicle.

The essence of the proposed ISO is retene illustrated by drawings, where:

Figure 1 shows a General view of the incision pyatilineyny two-position valve valve / actuator manual duplication electrical control signal 17 with the control chamber 27 from an external source of pressure signal 30 in the closed position and the system of working channels and pneumatic lines connecting the valve closure 14 and the opening 15 of the valve between itself and the cylinder 4 door control of the vehicle. The electrical control signal is absent. The piston-rod 7 of the cylinder 4 is retracted to the inside door of the vehicle closed.

Figure 2 shows a General view, section view of the valve in the open position. On the electropneumatic valve 13 filed an electrical control signal. The piston-rod 7 of the cylinder 4 is protruding, vehicle door opened.

Figure 3 shows a General view, section view of the valve in the open position in the absence of an electrical control signal and pressed plunger-actuator manual duplication electrical control signal 17. The piston-rod 7 of the cylinder 4 is protruding, vehicle door opened.

Figure 4 shows a General view, section view of the valve in the open position in the absence of an electrical control signal when the manual actuator 17 is powered (Najat is) using the operating chamber 27 from an external source (pressure) 30. Vehicle door opened.

Pyatilineyny two-position valve valve actuator doors of the vehicle (see figure 1) includes a housing 1 with channels 2 and 3 of the control cylinder 4 with the working cavities 5 and 6 and the piston rod 7, with channels 8 and 9 release air to the atmosphere, with the channel of the head 10, lines 11, 12 feed command pressure from the electro-pneumatic valve 13 to the valve closure 14 and the opening 15 at the same time through lipoatrophy cavity 16 of the plunger-actuator manual duplication of an electrical signal 17, the built-in lines 11 and 12 feed command pressure between the electro-pneumatic valve 13 and valve 14 closing and the opening 15.

The plunger-actuator manual duplication 17 is made with two cylindrical bands 18 and closed the ledge rod 19. Each belt 18 is provided with two sealing rings 20 and formed between the annular discharge groove 21. The plunger-actuator 17 is installed with the possibility of permanent contact of the outer seal 20 and the ledge 19 with the surface of the hollow bore 22 of the housing 1 and covering the stepped sleeve 23 is fixedly installed in the housing 1, interacting with their working edges of the belts 18 are formed on the surface of the bore 22 of the housing 1 with cut-off edges radially directed channels 11 is 12.

In the initial position of the plunger-actuator 17 of the feed channel 11 command pressure from the electro-pneumatic valve 13 and the control channel 12 valve closure 14 and the opening 15 formed in the bore 22 of the housing 1 provided between mipoesias annular cavity 16 of the plunger-actuator 17. Annular discharge groove 21 of the belt 18 of the plunger-actuator 17, which is located from the bottom of a blind bore 22 communicated with the discharge channel 10, and the cavity 24, bounded by the bottom of a blind bore 22 and the end face of the plunger-actuator 17 is permanently connected by a channel 25 with the cavity 26 of the electro-pneumatic control valve 13.

The plunger-actuator manual duplication 17 supplied with control chamber 27 formed by the guide walls of the cylindrical bore 22 of the housing 1 and the corresponding ends of condensed on the outer surface of the ring 20 of the plunger-actuator 17 and covering its stepped sleeve 23, and the sleeve 23 are sealed by the outer surface of the sealing ring 28, and the inner surface of the ring 29. The control chamber 27 is communicated with an external source of pneumatic control signal 30. In the guide cylindrical bores 22 of the housing 1, and a stepped sleeve 23 of plunger-actuator 17 on the peripheral surfaces of the belts 18 and ledge 19 is installed with guaranteed annular gaps 31 and 32 (see figure 2). Open t rzooi part of the ledge 19 of the plunger-actuator 17 fixedly mounted button 33.

The valve in the composition of the pneumatic door control vehicle works as follows:

The electrical control signal is absent. Vehicle door is closed (see Fig.1)

Under the action of the working pressure of compressed air supplied from the pressure channel 10, the valve closure 14 and the valve opening 15 is moved to the extreme right (under the scheme) regulations, displacing within the stroke portion of the air from the lines command pressure 11 and 12 in the electropneumatic valve 13 and then into the atmosphere. Supplied working pressure through the valve closure 14 enters the channel 3 and the left cavity 5 of the cylinder 4, the piston-rod 7 is moved inward (for cleaning), 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 15 and the channel 9 in the atmosphere.

On the electropneumatic valve 13 filed an electrical control signal. Vehicle door open (smpeg)

Under the influence of an electric control signal anchor electropneumatic valve 13 retracts (moves up), opening the passage of compressed air from the cavity 26 of the valve 13 in line 11 feed command pressure, lipoatrophy annular cavity 16 of the plunger-actuator 17 manual duplication, where the air through the channels 12 p which enters the cavity of the control valve closure 14 and the opening 15 at the same time.

In parallel, the pressure of the cavity 26 through the channel 25 is fed into the cavity 24 of the plunger-actuator manual duplication of an electrical signal 17. Under the action of the working pressure of the compressed air valves 14 and 15 are moved to the extreme left (down the line) position, thus locking the sealing valve 15 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. The piston-rod 7 is moved outward (on the issue), 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 14 and the channel 8 into the atmosphere.

In parallel, summed up the command pressure in the cavity 24 moves the plunger-actuator 17 in the right - initial position until it stops in the end covering sleeve 23.

The electrical control signal is absent. The plunger-actuator manual duplication of an electrical signal 17 is pressed by hand. Vehicle door open (see figure 3).

When pressed plunger-actuator 17 (buttons 33) is moved along its axis to a stop in the left (under the scheme) extreme position, displacing the air from the closed cavity 24 through the channel 25, the electropneumatic valve 13 into the atmosphere. When this channel head 10 is connected with the line command pressure 12 using mipoesias annular cavity 16 of the plunger-actuator 17, and l is of the command pressure 11 is blocked right (under the scheme) sealing flanges of the plunger-actuator 17, than completely eliminates leakage of compressed air into the atmosphere through the valve 13.

The valve closure 14 and the opening 15 are simultaneously moved to the left (down the line) end position. The working pressure of the feed head 10 enters the channel 2 and the cavity 6 of the cylinder 4, the piston-rod 7 is moved outward (on the issue), opening the door of the vehicle, while developing maximum pushing force, i.e. this mode coincides with the mode in which power to the power control signal to the electropneumatic valve 13 for opening the door (smfg). Pressed plunger-actuator 17 pneumatically unloaded and automatically fixed in position at the expense of static friction created by the interference fit 4 sealing rings 20, is placed in the outer grooves of both bands plunger-actuator 17 and the inner sealing ring 29 of the sleeve 23. At the termination of manual force to the plunger drive it retains the leftmost position with the valves 14 and 15, sash doors remain open.

The return of the plunger-actuator 17 (buttons 33) to its original position, either manually by the release button 33, or applying an electrical control signal to the electropneumatic valve 13, while the command pressure generated in the cavity 26, is passed by Cana is 25 into the cavity 24 of the bore 22 of the housing 1 and, acting on the end face of the plunger-actuator 17 moves it to the far right (under the scheme) initial position until it stops in the end covering the stepped sleeve 23.

The electrical control signal is absent. In the control chamber 27 of the plunger-actuator manual duplication 17 filed a signal from an external source 30. Vehicle door open (see figure 4)

Under the influence of the operating pressure supplied from an external source 30 through the radial channel in the control chamber 27, the plunger-actuator 17 moves to the left (on) position to another in the hollow end of the cylindrical bore 22, displacing the air from the closed cavity 24 through the channel 25, the electropneumatic valve 13 into the atmosphere. The valve closure 14 and the opening 15 is moved to the left (down the line) end position in which the piston-rod 7 of the pneumatic cylinder moves outward (on the issue), opening the door of the vehicle, i.e. this mode match mode, in which the plunger-actuator 17 is pressed by hand from the passenger compartment (see figure 3) or filed an electrical control signal to the electropneumatic valve 13 for opening the door (see figure 2).

When removing the external pressure control chamber 27 communicates with the atmosphere. The plunger-actuator 17 is automatically fixed in the previous (left) position due to the static ones is someone friction, created by the tightness of the four sealing rings 20 of the plunger-actuator 17 and the inner sealing ring 29 is stepped sleeve 23. Sash doors remain open. The return of the plunger-actuator 17 to its original position, or manually, or by applying an electrical control signal to the electropneumatic valve 13.

The stated set of constructive features of the present invention determines the technical result - the creation of pyatilineyny two-position valve valve actuator doors of the vehicle, wherein increased operational reliability, safety, higher performance and quality solutions.

Higher operating safety valve valve comprising pneumatic door of the vehicle is achieved by rational arrangement of the plunger-actuator manual duplication of an electrical signal and supplies it to control the camera from an external source of pressure, which provides emergency door opening of a vehicle with maximum developed power manually from the passenger compartment, and remotely using the pressure signal generated by one of the control buttons located in the cab and in Esna side body of the vehicle, with automatic hold doors open when removing the pressure signal.

1. Pyatilineyny two-position valve valve actuator of the vehicle doors, comprising a housing, two valve closing and opening with four locking elements of type "valve-seat, pneumatic control valves, electro-pneumatic control valve, plunger-actuator manual duplication electrical signal control and working channels and pneumatic lines connecting valves between themselves and the actuator, characterized in that the plunger-actuator manual duplication of the electric control signal is embedded in the supply line command pressure between the electro-pneumatic control valve - source command pressure and the valve closing and opening is made in the form dvuhpotokovogo plunger one-way cylindrical closed ledge (stem), each band of the plunger is provided with two outer o-rings and formed between the annular discharge groove, the plunger is mounted inside the hollow cylindrical guide bore of the casing with the formation of cavities distribution and control, with the possibility of a limited axial movement and constant contact of the outer seal and the ledge with the surface is hostame bore of the casing and covering, still installed in the housing retaining the stepped sleeve, interacting with their working edges of the stripes formed on the surface of the bore of the housing cut-off edges radially directed channels, and in the initial position of the plunger, the supply channel command pressure from the electro-pneumatic valve and the control channels of the valves closing and the opening formed in the bore of the housing provided between mipoesias annular cavity of the plunger, an annular discharge groove belt plunger located from the bottom of a blind bore of the housing, in communication with the discharge channel, and a cavity bounded by the bottom of a blind bore of the housing and the end face of the plunger drive permanently connected to the cavity electro-pneumatic control valve.

2. Pyatilineyny two-position valve valve actuator of the vehicle doors according to claim 1, characterized in that the plunger-actuator manual duplication of an electrical signal supplied with control chamber formed by the walls of the guide cylindrical bore of the housing and the respective ends of condensed on the outer surface of the plunger-actuator and covering his restraint stepped sleeve, and the sleeve is sealed to the outer and inner surfaces, and formed Kama is and communicated with an external source of pneumatic control signal, moreover, in the guide cylindrical bores of the housing and a stepped sleeve plunger-actuator on the peripheral surfaces of the belts and bench set with guaranteed annular gaps.



 

Same patents:

FIELD: fluid-pressure actuators.

SUBSTANCE: air distributor comprises housing, two valves for opening and closing provided with four closure members, air-operated device for control of the valves, electropneumatic control valve, actuator for manual doubling of electric control signal, and system of working valves and air lines that connect the valves and the valves with the actuator. The drive of manual doubling of the electric control signals built in the line for supplying control pressure between the electropneumatic control valve (source of the control pressure) and valves for closing and opening and is made of a plunger.

EFFECT: enhanced reliability.

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SUBSTANCE: air distributor comprises housing, two valves for opening and closing provided with four closure members, air-operated device for control of the valves, electropneumatic control valve, actuator for manual doubling of electric control signal, and system of working valves and air lines that connect the valves and the valves with the actuator. The drive of manual doubling of the electric control signals built in the line for supplying control pressure between the electropneumatic control valve (source of the control pressure) and valves for closing and opening and is made of a plunger.

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EFFECT: enhanced reliability.

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