KR100306431B1 - Barking system for freight train - Google Patents

Abstract

PURPOSE: A brake system for a freight car is provided to improve performance and brake power by using a diaphragm piston, to compact structure, and to enhance accuracy. CONSTITUTION: A spring(Q) lowers a piston(W) to open a valve(R) when pressure is discharged from an air supply tank(SR). If the compressed air supplied to an operating air tank(KR) is discharged to the atmosphere via an outlet(O) of an exhaust valve(40), the compressed air in a lower chamber(23) of a diaphragm piston(21) of an A-1 switch valve(20) is discharged to the atmosphere. Thus, re-engagement of brake is avoided. When pneumatic pressure is re-supplied to the air supply tank, air is simultaneously supplied to a lower chamber(P) of the exhaust valve. Then, the valve is closed, and normal brake is applied since the compressed air is not discharged.

Description

Barking system for freight train

The present invention relates to a braking device for a railway vehicle wagon, and more particularly, to a braking device that improves performance and braking power by improving the structure of a braking device used for commercial braking or for emergency braking of a railway car wagon. It is about.

In general, a braking device for a wagon is fitted with a piston made of metal and a slide type consisting of a bow valve and a bow seat, and is used to block air flow.

Such a conventional braking device for wagons has a problem in that the structure is complicated and the precision is low, thereby causing leakage and malfunction, and also requiring skilled personnel and high-level facilities for maintenance.

The present invention is to solve the conventional problems as described above, to simplify the structure, easy maintenance and improve the accuracy can be prevented from malfunction due to leakage, and also for a new type of freight car improved even braking force and stability It is to provide a braking device.

In order to achieve the above object, the present invention provides the A-1 relay valve for supplying the pressure air of the braking tube supplied from the power vehicle to the braking device via the air purifier and allowing the braking tube pressure to flow into the double braking tube through each air tube. , The pressure air supplied to the braking air pipe enters the pressure valve through the upper chamber, the sleeper port, and the reverse valve in the KA-1 control valve, and moves the membrane valve up and down to control the braking action. The KA-1 control valve and the emergency air supply to the upper chamber of the emergency valve are supplied to the upper chamber of the emergency valve at the time of emergency braking. In order to release the pressure cock of this direct supply air cylinder (SR) to release the loosening cock (loosely braking device). A relay, a two-stage response load acting on the basis of the load, the load loading capacity, and a relay valve operated by the operation of the response load side to introduce pressure air supplied from the A-1 relay valve into the first and second cylinders of the double braking cylinder. When the two-stage response load side is operated, the zero-stage switching [전환 轉換: change from the tolerance of the wagon to the zero difference (盈 車: after loading)] to the upper side of the relay piston Balanced side for supplying and operating pressure air, double-braking pass for braking action by pressure air supplied through the A-1 relay side and the relay side, and operated separately in the first and second zero cars It is characterized by having a pressure regulating valve for adjusting the supply pressure of the brake cylinder.

1 is a cross-sectional view of the braking device of the invention according to the present invention in the loosening (loose state: loosen the braking device) at the time of the tolerance (car: all cargo in the truck).

2 is a cross-sectional view of a commercial braking state during tolerance of the braking device according to the present invention.

3 is a cross-sectional view of a commercial braking state in the first zero-car (盈 車: freight car loaded with a load) of the braking system according to the present invention.

Figure 4 is a cross-sectional view of the commercial braking state at the time of the second zero of the braking device according to the present invention.

5 is a cross-sectional view of the emergency braking state at zero vehicle braking device according to the present invention.

* Explanation of symbols for main parts of the drawings

10: KA-1 control side 20: A-1 relay side

30: emergency valve 40: exhaust valve

41: Pressure regulating valve 50,50 ′: Two-stage response load

60: relay side 70: balance side

80: double braking cylinder 90: air purifier

100 to 110: air pipe 126 to 127: reverse ground

KR, KR ′: Working air cylinder SR: Supply air cylinder

PR: Pressure air cylinder BP: Brake tube

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 5, the A-1 relay valve 20 of the braking device is configured to supply the air purifier 90 and the reverse valve 126 with the pressure air of the braking pipe BP supplied from the power vehicle. Filled in the supply air cylinder (SR) via the air supply 104 to the upper chamber (T) A-1 relay side 20 through the air pipe 104, and the upper chamber (T) and the air pipe (A-1) 108, through the relay side 60 and the air pipe 110 to be introduced into the double braking barrel (80).

KA-1 control valve 10 is the pressure air supplied from the braking pipe (BP) through the air pipe 100 in the middle of the KA-1 control valve (10) the membrane chamber upper chamber (15 ') and the membrane plate piston (11) Membrane plate in accordance with the increase and decrease of the pressure introduced into the upper chamber 15 'of the membrane plate piston 11 through the lower chamber 15 through the installed sleepiness mouth 18 and the reverse side valve 14 to the pressure air PR (PR) The piston 11 moves up and down to control proper braking action.

The emergency valve 30 is supplied with pressure air of the pressure air cylinder PR through the air pipe 105 to the upper chamber T ′ of the emergency valve 30 during the emergency braking, and the air of the brake air engine 100 is a membrane plate piston ( 31 is supplied to the volume air chamber (S) through the sleepiness opening (d) formed in 31), the pressure air of the pressure air cylinder (PR) through the air pipe 103 during the emergency braking of the membrane plate piston of the A-1 relay valve (20) (21) to be supplied to the lower chamber (23).

The exhaust valve 40 is loosened after braking and loosens manually when braking. [手動 緩解: A person releases a cock by opening a drain cock to directly discharge the pressure air of the supply air cylinder (SR). The air pipe 104 ', which has been supplied to the basement P of the exhaust valve 40, is changed to the drain cock of the supply air cylinder SR and discharged to the atmosphere, the piston W (Q) When the lowering by elasticity, the side (R) is modified to release the pressure air supplied through the air pipe 103 to the atmosphere is a relaxation action.

Two-stage response load side (50, 50 ') is divided into primary and secondary zero (盈 車: loaded off load) to open and close the relay side (60) and the pressure control side (41).

Relay valve 60 is the second of the double-pressure brake cylinder (80) of the pressure air of the supply air cylinder (SR) via the A-1 relay valve 20 by the operation of the two-stage response load (50, 50 ') It also flows into the piston chamber 82.

The balance side 70 communicates the pressure air of the air pipe 106 to the air pipe 106 'from the time when the two-stage load-bearing sides 50 and 50' are operated as the primary zero-car (盈 車). .

The pressure regulating valve 41 is changed when the primary zero difference is operated so that the working air chamber KR communicates with the chamber, and the pressure through the air pipe 109 when the secondary air difference is operated. By closing the pressure control valve 41 with air to block the working air chamber KR (KR ′), the pressure air of the working air cylinder KR ′ chamber is discharged to the atmosphere.

The double braking cylinder 80 has a braking action by the pressure air of the supply air cylinder SR passing through the A-1 relay side 20 and the relay side 60 into the first and second piston chambers 81 and 82. Will cause.

In the drawings, reference numeral 12 denotes a francza, 16 and V · O · O ′ are exhaust ports, 17 and 22 are supply valves, 32 are emergency supply valves, 61 are pistons, 62 and Z are upper chambers, K is an intermediate chamber, 63 and R 'are sides, 127 is reverse, 101-110 are air pipes, W' is a piston, and Y is a sleepy sphere.

Referring to the operation state of the present invention as follows.

As shown in FIG. 1, when pressure air is pushed into the braking tube BP in a state in which a brake device is installed in a vehicle, the pressure air is the upper chamber of the membrane plate piston 11 of the KA-1 control valve 10. 15 ') and the upper chamber of the pressure air cylinder PR and the KA-1 control valve 10 through the air pipe 102 via the lower chamber 15 through the sleeper opening 18 and the reverse side valve 14; Z) is supplied to the upper chamber (T) of the A-1 relay valve (20) while filling the supply air (SR) via the reverse side 126 through the braking air engine 100, the emergency valve (30) ) It is filled in the volume air chamber S through the sleepiness opening d formed in the intermediate chamber K and the membrane plate piston 31. In addition, the pressure air of the pressure air cylinder PR is also supplied to the upper chamber T 'of the emergency valve 30.

In this state, when the commercial braking is engaged, as shown in FIG. 2, when the air in the braking tube BP is discharged to the atmosphere to reduce the total air pressure of the braking air engine 100, the KA-1 control valve ( Since the pressure air of the upper chamber 15 ′ of the membrane plate piston 11 of 10) is reduced with the pressure of the braking air engine 100, the membrane plate piston 11 is raised by the air pressure of the lower chamber 15.

This is because when the pressure is supplied to the pressure air PR, the pressure of the pressure air PR when the pressure of the brake air engine 100 is depressurized when the pressure air that has been gradually supplied through the reverse valve 14 and the sleeper port 18 is reduced. Since the membrane cannot be pulled out, the membrane plate piston 11 is raised by the air pressure of the lower chamber 15 of the membrane plate piston 11.

On the other hand, since the supply side 17 installed on the upper side of the KA-1 control valve 10 is opened in a state of blocking the hole inside the francza 12 leading to the exhaust port 16, the pressure air of the pressure air cylinder PR is KA-. 1 is supplied to the lower chamber 23 and the working air chamber KR of the A-1 relay valve 20 through the control valve 10 and the air pipe 103, and the KA-1 control valve 10 It is supplied until the upper feed side 17 is in the wrap position.

Accordingly, the pressure of the supply air cylinder SR supplied to the upper chamber T is increased through the air pipe 108 by opening the supply side 22 by raising the membrane plate piston 21 of the A-1 relay side 20. The double braking tube 80 is supplied to obtain a braking force.

At this time, the pressure air supplied to the upper chamber 23 'of the membrane plate piston 21 of the A-1 relay side 20 through the sleeper opening Y is the pressure supplied to the lower chamber 23 of the membrane plate piston 21. Offset with the air, the membrane piston 21 is lowered and takes the wrap position that the supply side 22 is blocked, thereby blocking the air supplied to the double braking cylinder (80).

In addition, as shown in FIG. 3 and FIG. 4 during the first and second braking of the zero-car (盈 車: loaded wagon), the same result as the braking body during commercial braking of FIG. 50 ') is operated with a zero difference load of about 13 to 15 TON or more so that the brake tube 100 pressure is applied to the upper chamber 62 of the piston 61 and the piston 61 via the reverse valve 127. In (101), the two-stage load-bearing side (50, 50 ') and the balance side (70) are introduced through the air pipe (106'), and the side (63) is modified so that the braking fastening A-1 relay side (20) Pressure air flowing in from the air pipe 110 is introduced into the second piston chamber 82 of the double braking cylinder 80 to increase the braking force.

At the time of emergency braking, as shown in FIG. 5, if the air of the braking air engine 100 drops sharply, the pressure air drops rapidly into the middle chamber K of the last plate piston 31 of the emergency valve 30. The last minute piston 31 is suddenly increased by the pressure air filled in (S), and the emergency supply valve 32 is opened so that the pressure air of the pressure air cylinder PR is the last valve piston 21 of the A-1 relay valve 20. As it is supplied to the lower chamber 23 and the working air cylinder (KR), it is the same as the state of braking when braking the commercial braking of 2nd, 3rd and 4th, and zero-car (盈 車) You can get a braking force faster.

Referring to the operating state of the exhaust valve of the braking device according to the present invention as shown in Figures 1 to 5, when the manual loosening discharge the supply air (SR) air and does not discharge the working air supply air (SR) When the air is filled again, the braking phenomenon occurs. Therefore, to prevent this, the pressure of the piston (W) and the base (P) of the piston (W) is released from the supply air (SR). The side R is modified by causing the piston W to descend by the elastic force.

At this time, when the pressure air supplied to the working air cylinder KR falls into the atmosphere through the exhaust port 40 and the exhaust port O, the pressure air is applied to the base plate 23 of the membrane plate piston 21 of the A-1 relay valve 20. At the same time, it will fall into the atmosphere and it will not be braking again.

When the air pressure is supplied to the supply air cylinder SR again, it is also supplied to the exhaust valve 40 and the basement P at the same time, so that the valve R is closed and the working air cylinder (KR) air cannot escape to the atmosphere when the braking action is performed. Will be done.

The air pressure acting on the relay side 60 during the first zero difference (盈 車) is shown in FIG. 3 and FIG. ′) And the right side of the piston (W ′) of the pressure regulating valve (41) opens and the side (R ′) is opened and the working air chamber (KR) (KR ′) is used for the communication braking action to the double braking cylinder (80). The pressure of the air.

When the secondary zero car is operated, the two-stage response load side 50 (50 ') is operated. When the pressure of the air pipe 101 flows into the air pipe 109, the side R' of the pressure regulating valve 41 is changed. As the air that has blocked the air pipe 103 and acted on the working air cylinder KR ′ is discharged to the pressure control valve 41 and the exhaust port O ′, the pressure air of the pressure air cylinder PR is braked only on the working air cylinder KR. Used to increase the braking force in the second zero-car.

In this way, it is possible to obtain the power required for commercial braking and emergency braking of the wagon vehicle.

By applying the present invention, the structure of the braking device can be simplified to facilitate maintenance and maintenance, improve accuracy, and prevent malfunctions due to leakage, and also improve the braking property and safety, and also increase the manufacturing cost. There is a saving effect.

Claims (1)

In the braking device for a railway vehicle wagon, the upper chamber T is filled with the pressure air of the braking pipe BP supplied from the power vehicle to the supply air cylinder SR via the air purifier 90 and the reverse side valve 126. An A-1 relay valve 20 for supplying the upper chamber T and the braking pipe BP into the double braking tube 80 through the air pipes 108 and 110; The pressure air supplied from the braking pipe BP is introduced into the upper chamber 15 ′ via the air pipe 100 through the air pipe 102 through the inlet sleeper 18 and the reverse valve 14. The membrane valve piston 11 is supplied to the upper chamber Z and the pressure air cylinder PR to increase or decrease the pressure of the brake tube pressure air introduced into the upper chamber 15 'of the membrane piston 11 to the lower chamber 15 air pressure. KA-1 control valve 10 for controlling the braking action by the; At the time of emergency braking, the pressure air of the pressure air cylinder PR is supplied to the upper chamber T 'through the air pipe 105, and the air of the braking air engine 100 is discharged through the sleeper opening d formed in the membrane plate piston 31. It is supplied to the air chamber (S) so that during the emergency braking the pressure air of the pressure air cylinder (PR) is supplied to the lower chamber 23 of the membrane plate piston 21 of the A-1 relay valve 20 through the air pipe 103 An emergency valve 30 capable of obtaining a quick braking force; After braking, if the air pipe 104 'pressure, which was supplied to the basement P of the exhaust valve 40, is discharged to the atmosphere by relieving the drain cock of the supply air cylinder SR in order to perform a loosening action during manual relaxation, the piston W The exhaust valve 40 is lowered by the spring (Q) elasticity is changed to the side (R) is modified so that the pressure air supplied through the air pipe 103 is released into the atmosphere to perform a relaxation action; Two-stage response load side operating above the zero-load load (approximately 13-15 ton) to open and close the relay side 60 and the pressure regulating valve 41 to obtain the braking force best suited for the first and second zero order loads. 50, 50 '); In order to secure the braking force according to the zero-load load of the wagon, the double-pressure braking cylinder of the supply air (SR) via the A-1 relay valve 20 is operated by the operation of the two-stage response load (50, 50 '). A relay side 60 flowing into the second piston chamber 82 of 80; A balance side (70) for opening the relay side (60) by communicating the pressure air of the air tube (106) to the air tube (106 ') when the two-stage response load side (50, 50') is operated; A double braking barrel 80 through which the pressure air of the supply air cylinder SR via the A-1 relay valve 20 and the relay valve 60 flows into the piston chambers 81 and 82 to cause a braking action; By the two-stage actuation load side (50, 50 ') operation in the first zero car, the pressure air actuating the pressure control valve (41) by operating the relay side (60) to communicate the working air cylinder (KR, KR') Regulates the pressure flowing into the double braking barrel (80), the air is supplied to the air pipe (101) by the two-stage response load (50, 50 ') at the time of the second zero car is supplied to the air pipe (109) When the 41 is returned, the air pipe 103 is shut off, and the air in the working air cylinder KR ′ is discharged to the pressure control valve 41 and the exhaust port O ′, so that the braking force can be obtained at the time of the second zero car. Braking device for a wagon, characterized in that provided (41).