CN112109759A - Railway wagon parking brake control device and brake system - Google Patents
Railway wagon parking brake control device and brake system Download PDFInfo
- Publication number
- CN112109759A CN112109759A CN202010868947.XA CN202010868947A CN112109759A CN 112109759 A CN112109759 A CN 112109759A CN 202010868947 A CN202010868947 A CN 202010868947A CN 112109759 A CN112109759 A CN 112109759A
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- air
- valve chamber
- air inlet
- piston
- parking brake
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
- B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
- B61H11/10—Aerodynamic brakes with control flaps, e.g. spoilers, attached to the vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H13/00—Actuating rail vehicle brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H13/00—Actuating rail vehicle brakes
- B61H13/34—Details
Abstract
The invention relates to a railway wagon parking brake control device and a brake system. The brake system comprises a parking brake cylinder, an air source and a railway wagon parking brake control device, wherein a first air inlet of an air charging valve chamber of the control device is communicated with the air source, and a fifth air inlet of an air exhaust valve chamber of the control device is communicated with the parking brake cylinder. The invention can automatically control the air charging and the air discharging of the parking brake cylinder by means of the air source of the air brake system of the railway wagon, the air discharging is finished by the parking control valve without manual participation, and the compressed air in the one-way valve chamber flows in a one-way manner, thereby effectively preventing the compressed air in the parking brake cylinder from flowing back to the air source, ensuring that the parking automatic brake device does not participate in the normal operation of the vehicle so as to ensure the normal operation of the air brake system, and in addition, controlling the opening pressure of the parking brake cylinder can ensure that the compressed air of the parking brake can not be discharged to the atmosphere when the vehicle normally operates, ensuring the safe operation of the vehicle and having good practical value.
Description
Technical Field
The invention belongs to the technical field of wagon braking, and particularly relates to a wagon parking braking control device and a braking system.
Background
The basic process of railway wagon transportation is as follows: loading-marshalling-transporting-unloading, loading and unloading are indispensable throughout the basic transportation process, and the general operation time is long, so that the vehicle is completed without a traction locomotive. In order to ensure the safety of parking, the parking brake of the railway wagon generally adopts air brake and hand brake at present.
The truck air brake mostly adopts a brake cylinder as a braking force, and due to the structural limitation, the standard stipulates that the brake cylinder leaks inevitably under the normal temperature environment, so that the reliability of the long-term parking brake cannot be ensured.
The traditional hand brake for railway wagon is manually braked. The magnitude of the braking force is influenced by human factors, and the shortage of the braking force is easily caused. In order to facilitate observation, the hand braking mechanism is generally arranged at a higher position, and certain personal safety hidden danger exists. During train inspection work, the train is long in grouping, the working time is short, the phenomenon that the hand brake is not relieved frequently occurs, and as a result, wheels are scratched.
Railway lines are generally constructed in regions with complex terrain, and slopes of different degrees exist. When a heavy-duty train is parked on a slope under the condition, the vehicle is prone to accidentally slide under the action of external forces such as downward sliding force and wind power, hand braking needs to be carried out one by one, and great labor cost and time cost are consumed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a railway wagon parking brake control device and a brake system, which aim to solve the technical problems of hand braking and air braking when a railway wagon is parked.
The technical scheme of the invention is as follows:
in one aspect, the invention provides a parking brake control device for a railway wagon, which is characterized by comprising a valve body, wherein an air charging valve chamber, a one-way valve chamber and an air exhaust valve chamber are arranged in the valve body, wherein:
the air charging valve chamber is provided with a first air inlet, a first air outlet and a second air outlet, the first air inlet of the air charging valve chamber is used for being communicated with an air source, a first control valve is arranged in the air charging valve chamber, and the first control valve can be used for opening or closing the first air outlet of the air charging valve chamber in an operable mode;
the one-way valve chamber is provided with a second air inlet and a third air outlet, the second air inlet of the one-way valve chamber is communicated with the first air outlet of the air charging valve chamber, a second control valve is arranged in the one-way valve chamber, and the second control valve can be used for opening or closing the second air inlet of the one-way valve chamber;
the air exhaust valve chamber is provided with a third air inlet, a fourth air inlet, a fifth air inlet and a fourth air outlet, the third air inlet of the air exhaust valve chamber is communicated with the third air outlet of the one-way valve chamber, the fourth air inlet of the air exhaust valve chamber is communicated with the second air outlet of the air inflation valve chamber, the third air inlet of the air exhaust valve chamber is communicated with the fifth air inlet, the fifth air inlet of the air exhaust valve chamber is communicated with the parking brake cylinder, the fourth air outlet is communicated with the air, a third control valve is arranged in the air exhaust valve chamber, and the fifth air inlet and the fourth air outlet can be communicated or closed by the third control valve in an operable mode.
Further, the first control valve comprises a first piston and a first elastic part, the first piston and the first air outlet are coaxially arranged, a first cavity is formed in one end, back to the first air outlet, of the first piston, one end, back to the first air outlet, of the first cavity is open, one end of the first elastic part is arranged in the first cavity, and the other end of the first elastic part is connected to the inner wall of the air inflation valve chamber.
Furthermore, the first control valve further comprises a first valve seat, the first valve seat is arranged in the first air outlet, the first piston can move into an inner hole of the first valve seat, a first spigot is arranged at one end, facing the first piston, of the inner hole of the first valve seat, and a first sealing ring is sleeved in the first spigot.
Further, the second control valve comprises a second piston and a second elastic part, the second piston and the second air inlet are coaxially arranged, a second cavity is formed in one end, back to the second air inlet, of the second piston, one end, back to the second air inlet, of the second cavity is open, one end of the second elastic part is arranged in the second cavity, and the other end of the second elastic part is connected to the inner wall of the one-way valve chamber.
Furthermore, the second control valve further comprises a second valve seat, the second valve seat is arranged in the second air inlet, the second piston can move into an inner hole of the second valve seat, a second spigot is arranged at one end, facing the second piston, of the inner hole of the second valve seat, and a second sealing ring is sleeved in the second spigot.
Further, the third control valve includes:
a third valve seat fixedly arranged in the first end of the exhaust valve chamber, wherein the third valve seat is provided with a first communication hole along the radial direction, a third air inlet and a fifth air inlet of the exhaust valve chamber are communicated through the first communication hole, the third valve seat is provided with a second communication hole along the axial direction, one end of the second communication hole is communicated with the first communication hole, and the other end of the second communication hole extends to the end part of the third valve seat surface facing the second end of the exhaust valve chamber;
a third piston disposed coaxially with the third valve seat, the third piston being movable in the second end of the discharge valve chamber, the third piston being provided with a third communication hole penetrating in the axial direction, the third communication hole being in communication with the second communication hole;
a third resilient member disposed between the third piston and the third seat.
Further, an end of the third piston facing the third valve seat is provided with a groove, a sealing member is arranged in the groove, and the sealing member is operable to block the second communication hole;
one end of the third piston facing the third valve seat is provided with at least one fourth communication hole, and the at least one fourth communication hole is communicated with the third communication hole.
Further, the sealing member includes a sealing seat and a sealing gasket, the sealing seat is fixedly disposed in the groove, the sealing gasket is fixedly disposed on an end of the sealing seat facing the third valve seat, and the sealing gasket is operable to block the second communicating hole.
Furthermore, a shrinkage plug is arranged in the fifth air inlet.
On the other hand, the invention also provides a railway wagon parking brake system which comprises a parking brake cylinder, an air source and the railway wagon parking brake control device, wherein a first air inlet of an air charging valve chamber of the control device is communicated with the air source, and a fifth air inlet of an air exhaust valve chamber of the control device is communicated with the parking brake cylinder.
The invention has the beneficial effects that:
the railway wagon parking brake control valve provided by the invention automatically controls air charging and air discharging of the parking brake cylinder by means of the air source of the railway wagon air brake system, the air discharging is completed by the parking control valve, manual participation is not needed, a hand brake is replaced, the compressed air in the one-way valve chamber flows in a one-way mode, the compressed air in the parking brake cylinder can be effectively prevented from flowing back to the air source, the parking automatic brake device does not participate when the vehicle is in normal operation, so that the air brake system can be normally operated, in addition, the opening pressure of the parking brake cylinder is controlled, the compressed air of the parking brake can not be discharged to the atmosphere when the vehicle is in normal operation, the safe operation of the vehicle is ensured, the reliable brake force is provided, the structure is simple, the brake force is stable, the installation is convenient, and the railway wagon parking brake control.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a parking brake control device of a railway wagon in a braking state according to the present embodiment;
FIG. 2 is a schematic view of the parking brake control device of the railway wagon in a buffering state;
fig. 3 is a schematic structural diagram of a parking brake system of a railway wagon according to the embodiment.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First, the present embodiment discloses a railway wagon parking brake control device.
Fig. 1 is a schematic structural diagram of a railway wagon parking brake control device in a braking state according to the embodiment, fig. 2 is a schematic structural diagram of a railway wagon parking brake control device in an inflation relieving state according to the embodiment, and with reference to the diagrams, the control device in the embodiment includes a valve body a, and an air charging valve chamber 1, a one-way valve chamber 2 and an air exhaust valve chamber 3 are arranged in the valve body a.
With reference to fig. 1 and fig. 2, the charging valve chamber 1 of the present embodiment is provided with a first air inlet 101, a first air outlet 102, and a second air outlet 103, the first air inlet of the charging valve chamber 1 is used for communicating with an air source, a first control valve 4 is disposed in the charging valve chamber 1, and the first control valve 4 can operatively open or close the first air outlet 102 of the charging valve chamber 1.
With reference to fig. 1 and fig. 2, in this embodiment, the first control valve 4 includes a first piston 401 and a first elastic member 402, the first piston 401 and the first air outlet 102 are coaxially disposed, a first cavity 403 is disposed at an end of the first piston 401 facing away from the first air outlet 102, an end of the first cavity 403 facing away from the first air outlet 102 is open, an end of the first elastic member 402 is disposed in the first cavity 403, and another end of the first elastic member 402 is connected to an inner wall of the air inflation valve chamber 1.
In this embodiment, the first piston 401 divides the charging valve chamber 1 into two parts, and in the braking state, as shown in fig. 1, the upper end of the first piston 401 is located in the first air outlet 102 to block the first air outlet 102, and the first air outlet 102 is in the blocking state by the supporting and limiting of the first elastic member 402. Under the inflation relieving, as shown in fig. 2, air is injected into the upper part of the first piston 401, the first elastic member 402 is compressed, the first piston 401 moves downwards, the upper end of the first piston 401 is separated from the first air outlet 102, and the first air outlet 102 can be in an open state; when no air is injected into the upper portion of the first piston 401, the upper end of the first piston 401 moves into the first air outlet 102 under the restoring action of the first elastic member 402, so that the first air outlet 102 maintains a blocked state.
With reference to fig. 1 and fig. 2, in the present embodiment, the first air inlet 101 and the second air outlet 103 are located at two opposite sides of the first piston 401 and between the first piston 401 and the first air outlet 102, so that air can be injected into the air inflation valve chamber 1 through the first air inlet 101 to open the first air outlet 102.
With reference to fig. 1 and 2, in the present embodiment, an end of the charging valve chamber 1 facing away from the first air outlet 102 (a lower end of the charging valve chamber 1 shown in fig. 1 and 2) is open, the opening is detachably sealed by the first cover plate 104, and the other end of the first elastic member 402 is connected to an inner side of the first cover plate 104, so that the arrangement of the components in the charging valve chamber 1 can be facilitated.
With reference to fig. 1 and fig. 2, in this embodiment, the first control valve 4 further includes a first valve seat 404, the first valve seat 404 is fixedly disposed in the first air outlet 102, the first piston 401 is movable into an inner hole of the first valve seat 404, one end of the inner hole of the first valve seat 404, which faces the first piston 401, is provided with a first spigot, and a first sealing ring 405 is sleeved in the first spigot to seal the inner holes of the first piston 401 and the first valve seat 404, so as to ensure a sealing effect of the first air outlet 102 in a blocking state.
With reference to fig. 1 and 2, in the present embodiment, the one-way valve chamber 2 has a second air inlet 201 and a third air outlet 202, the second air inlet of the one-way valve chamber 2 is communicated with the first air outlet 102 of the air charging valve chamber 1, a second control valve 5 is disposed in the one-way valve chamber 2, and the second control valve 5 is operable to open or close the second air inlet 201 of the one-way valve chamber 2.
Referring to fig. 1 and 2, in the present embodiment, a first passage 6 is provided in the valve body a, and the second air inlet of the one-way valve chamber 2 and the first air outlet 102 of the air charging valve chamber 1 are communicated through the first passage 6.
With reference to fig. 1 and fig. 2, in this embodiment, the second control valve 5 includes a second piston 501 and a second elastic member 502, the second piston 501 and the second air inlet 201 are coaxially disposed, an end of the second piston 501 facing away from the second air inlet 201 is provided with a second cavity 503, an end of the second cavity 503 facing away from the second air inlet 201 is open, an end of the second elastic member 502 is disposed in the second cavity 503, and another end of the second elastic member 503 is connected to an inner wall of the check valve chamber 2.
Referring to fig. 1 and 2, in the present embodiment, the second piston 501 divides the one-way valve chamber 2 into two parts, and in the braking state, as shown in fig. 1, the lower end of the second piston 501 is located in the second air inlet 201 to block the second air inlet 201, and the second air inlet 201 is in the blocking state by the support and limit of the second elastic member 502. Under the inflation relieving, as shown in fig. 2, air is injected into the lower part of the second piston 501, the second elastic member 502 is compressed, the second piston 501 moves upwards, the lower end of the second piston 501 is separated from the second air inlet 201, and the second air inlet 201 can be opened; when no air is injected into the lower portion of the second piston 501, the lower end of the second piston 501 moves into the second air inlet 201 by the restoring action of the second elastic member 502, so that the second air inlet 201 is kept in a blocked state.
Referring to fig. 1 and 2, in the present embodiment, air can enter the lower portion of the second piston 501 through the first air outlet 102, the first passage 6 and the second air inlet 201 of the charge valve chamber 1.
Referring to fig. 1 and fig. 2, in the present embodiment, the second air outlet 202 is located at one side of the second piston 501, and when the second air inlet 201 is opened, air can be discharged from the second air outlet 202.
With reference to fig. 1 and fig. 2, in this embodiment, the second control valve 5 further includes a second valve seat 504, the second valve seat 504 is disposed in the second air inlet 201, the second piston 501 is movable into an inner hole of the second valve seat 504, an end of the inner hole of the second valve seat 504 facing the second piston 501 is provided with a second spigot, and a second sealing ring 505 is sleeved in the second spigot to seal the inner holes of the second piston 501 and the second valve seat 504, so as to ensure a sealing effect of the second air inlet 201 in the blocked state.
With reference to fig. 1 and 2, in the present embodiment, one end of the check valve chamber 2 (the upper end of the check valve chamber 2 shown in fig. 1 and 2) facing away from the second inlet 201 is open, the open end is detachably sealed by the second cover plate 203, and the other end of the second elastic member 502 is connected to the inner side of the second cover plate 203, so that the arrangement of the components in the check valve chamber 2 can be facilitated.
Referring to fig. 1 and 2, in the present embodiment, the exhaust valve chamber 3 has a third air inlet 301, a fourth air inlet 302, a fifth air inlet 303 and a fourth air outlet 304, the third air inlet 301 of the exhaust valve chamber 3 is communicated with the third air outlet 202 of the check valve chamber 2, the fourth air inlet 302 of the exhaust valve chamber 3 is communicated with the second air outlet 103 in the charging valve chamber 1, the third air inlet 301 and the fifth air inlet 303 of the exhaust valve chamber 3 are communicated, the fifth air inlet 303 of the exhaust valve chamber 3 is used for being communicated with the parking brake cylinder, the fourth air outlet 304 is communicated with air, a third control valve 7 is arranged in the exhaust valve chamber 3, and the fifth air inlet 303 and the fourth air outlet 304 are operatively communicated or closed by the third control valve 7.
Referring to fig. 1 and 2, in this embodiment, a second passage 8 and a third passage 9 are provided in the valve body a, the third air inlet 301 of the air discharge valve chamber 3 and the third air outlet 202 of the check valve chamber 2 can be communicated through the second passage 8, and the fourth air inlet 302 of the air discharge valve chamber 3 and the second air outlet 103 in the air charge valve chamber 1 can be communicated through the third passage 9.
Referring to fig. 1 and 2, in this embodiment, the third control valve 7 includes a third valve seat 701, a third piston 702 and a third elastic member 703, wherein the third valve seat 7 is fixedly disposed in a first end of the discharge valve chamber 3, the third valve seat 701 is provided with a first communication hole 704 in a radial direction, the third air inlet 301 and the fifth air inlet 303 of the discharge valve chamber 3 are communicated through the first communication hole 704, the third valve seat 701 is provided with a second communication hole 705 in an axial direction, one end of the second communication hole 705 is communicated with the first communication hole 704, the other end of the second communication hole 705 extends to an end of the third valve seat 701 facing a second end of the discharge valve chamber 3, the third piston 702 and the third valve seat 701 are coaxially disposed, the third piston 702 is movable in the second end of the discharge valve chamber 3, the third piston 702 is provided with a third communication hole 706 in an axial direction, the third 706 is operatively communicated with the second communication hole 705, a third resilient member 703 is disposed between the third piston 702 and the third valve seat 701. The control of the third control valve 7 is described with reference to the following principle.
Referring to fig. 1 and fig. 2, in the present embodiment, the fourth air inlet 302 and the fourth air outlet 304 are disposed at two sides of the third piston 702, if the compressed air entering from the fourth air inlet 302 moves the third piston 702 upward to compress the third elastic member 703, and if the compressed air does not enter from the fourth air inlet 302, the third piston 702 returns under the restoring action of the third elastic member 703.
Further, in the present embodiment, with reference to fig. 1 and fig. 2, a groove 707 is formed at an end of the third piston 702 facing the third valve seat 701, a sealing member is disposed in the groove 707, the sealing member is operable to block the second communication hole 705, the sealing member is synchronously moved upward to block the second communication hole 705 when the third piston 702 is moved upward, and the sealing member is synchronously moved downward to open the second communication hole 705 when the third piston 702 is moved downward.
Further, in the present embodiment, with reference to fig. 1 and 2, at least one fourth communication hole is provided at one end of the third piston 702 facing the third valve seat 701, and the at least one fourth communication hole communicates with the third communication hole 706. When the second communication hole 705 is opened, the second communication hole 705 communicates with the third communication hole 706 through at least one fourth communication hole.
In this embodiment, the sealing member includes a sealing seat 708 and a sealing gasket 709, the sealing seat 708 may be fixedly disposed in the groove 707 by an interference fit, the sealing gasket 708 may be fixedly disposed on an end of the sealing seat 708 facing the third valve seat 708 by a vulcanization method, and the sealing gasket 708 may operatively block the second communication hole 705.
Further, referring to fig. 1 and 2, in the present embodiment, the exhaust valve chamber 3 is further provided with a breathing hole 306, and the breathing hole 306 is used for exhausting air between the third piston 702 and the third valve seat 701, i.e. in the cavity where the third elastic member 703 is located.
In this embodiment, the breathing hole 306 may be provided with a silencer 307 to reduce noise emission.
In addition, in this embodiment, a shrinkage plug 308 is disposed in the fourth air outlet 304 to control the air exhaust speed.
With reference to fig. 1 and 2, in the present embodiment, the end of the air vent valve chamber 3 facing away from the third piston 702 (the upper end of the air vent valve chamber 3 shown in fig. 1 and 2) is open, and the opening is detachably sealed by the third cover plate 305, so that the arrangement of the components in the air vent valve chamber 3 can be facilitated.
Based on the railway wagon parking brake control valve, the embodiment also provides a railway wagon parking brake system.
Fig. 3 is a schematic structural diagram of a railway wagon parking brake system of the present embodiment, and referring to fig. 1-3, the brake system of the present embodiment includes a parking brake cylinder b, an air source c, and the railway wagon parking brake control device, the first air inlet 101 of the air charging valve chamber 1 of the control device is communicated with the air source c, and the fifth air inlet 303 of the air discharging valve chamber 3 of the control device is communicated with the parking brake cylinder b.
Further, the air source c in this embodiment may be a train pipe, and a combined dust collector d is disposed on a pipeline through which the first air inlet 101 and the air source c communicate, so as to filter air entering the air charging valve chamber 1.
In this embodiment, each elastic member may be a spring, a disc spring, or the like, and each sealing ring may be installed at a corresponding position in a vulcanization manner, which is not limited in this embodiment.
The working principle of the railway wagon parking brake system of the embodiment is as follows:
as shown in fig. 1, the vehicle is initially positioned, that is, no wind is supplied from the wind source c into the charging valve chamber 1, the check valve chamber 2, and the exhaust valve chamber 3 are held at initial positions by the elastic members, that is, the first air outlet 102 in the charging valve chamber 1 and the second air inlet 201 in the check valve chamber 2 are closed, the fifth air inlet 303 and the fourth air outlet 304 in the exhaust valve chamber 3 are communicated, and the parking brake cylinder b is charged with compressed air into the exhaust valve chamber 3 through the fifth air inlet 303 and discharged through the fourth air outlet 304, and at this time, the parking brake cylinder b is in a braking state.
And (3) inflation and relieving working conditions: referring to fig. 2, that is, the wind source (train pipe) 11 has wind, as the pressure of the wind source c rises, the communication between the fifth air inlet 303 and the fourth air outlet 304 in the exhaust valve chamber 3 is first closed, that is, the compressed air of the wind source c enters below the third piston 702 through the second air outlet 103 and the fourth air inlet 302 of the exhaust valve chamber 3, the third elastic member 703 is compressed, the sealing member is driven to synchronously move upwards, the sealing member is in contact with the third valve seat 701, the second communication hole 705 is blocked by the sealing member, and the compressed air between the third valve seat 701 and the third piston 702 is discharged to the atmosphere through the breathing hole 306; then, the first air outlet 102 of the air charging valve chamber 1 and the second air inlet 201 of the one-way valve chamber 2 are opened, namely, the compressed air moves the first piston 401 in the air charging valve chamber 1 downwards and compresses the first elastic member 402, so that the first piston 401 is separated from the first valve seat 404, and the first air outlet 102 of the air charging valve chamber 1 is opened; compressed air enters the lower chamber of the check valve chamber 2 through the first outlet port 102 of the opened charging valve chamber 1, moves the second piston 501 upward, compresses the second elastic member 502, separates the second piston 501 from the second valve seat 504, opens the second inlet port 201 of the check valve chamber 2, passes through the first outlet port 102 of the opened charging valve chamber 1, the second inlet port 201 of the check valve chamber 2, and the third inlet port 202 of the check valve chamber 2, enters the third inlet port 301 of the exhaust valve chamber 3 in two paths, one path enters the parking brake cylinder b through the first connecting hole 704 and the fifth inlet port 303 which are exhausted from the third valve seat 704, and the other path enters the upper part of the sealing member through the second connecting hole 705 in the exhaust valve seat 14.
The braking position working condition, namely the air source c exhausts air, when the pressure of the air source c is reduced to a certain value, the second air inlet 201 of the one-way valve chamber 2 and the first air outlet 102 of the air charging valve chamber 1 are closed in sequence, namely the second elastic member 502 in the one-way valve chamber 1 is reset and moves downwards under the action of compressed air, so that the second piston 501 is in contact with the second valve seat 504, the second air inlet 201 of the one-way valve chamber 2 is closed, the first piston 401 in the air charging valve chamber 1 is moved upwards to be in contact with the first valve seat 404 under the reset action of the first elastic member 402, and the first air outlet 102 of the air charging valve chamber 1 is closed; with the further reduction of the pressure of the air source c, the third piston 702 of the exhaust valve chamber 3 moves the third piston 702 downward by the restoring action of the third elastic member 703, and moves the sealing member downward together, so that the sealing member is separated from the third valve seat 701, the second communication hole 705 of the third valve seat 701 is opened, and after passing through at least one fourth communication hole and the third communication hole 706, the air is exhausted to the atmosphere through the fourth air outlet 304, and the parking brake cylinder is braked.
From the above, the wagon parking brake control valve provided in this embodiment automatically controls the air charging and air discharging of the parking brake cylinder by the air source of the wagon air brake system, the air exhaust is completed by the parking control valve without manual participation to replace a hand brake, and the compressed air in the one-way valve chamber flows in a one-way, can effectively prevent the compressed air in the parking brake cylinder from flowing back to an air source, ensure that the parking automatic brake device does not participate in the normal operation of the vehicle so as to ensure the normal operation of an air brake system, in addition, the opening pressure of the parking brake cylinder is controlled, so that the compressed air of the parking brake can not be exhausted to the atmosphere when the vehicle runs normally, the safe running of the vehicle is ensured, the brake device has the advantages of reliable brake force, simple structure, stable brake force, convenience in installation and good practical popularization value.
The following embodiments are provided for the purpose of illustrating the present invention and are not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the technical features of the present invention can be modified or changed in some ways without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a railway freight car parking braking controlling means, its characterized in that, controlling means includes the valve body, be provided with the valve chamber that aerifys, one-way valve room, the valve chamber of airing exhaust in the valve body, wherein:
the air charging valve chamber is provided with a first air inlet, a first air outlet and a second air outlet, the first air inlet of the air charging valve chamber is used for being communicated with an air source, a first control valve is arranged in the air charging valve chamber, and the first control valve can be used for opening or closing the first air outlet of the air charging valve chamber in an operable mode;
the one-way valve chamber is provided with a second air inlet and a third air outlet, the second air inlet of the one-way valve chamber is communicated with the first air outlet of the air charging valve chamber, a second control valve is arranged in the one-way valve chamber, and the second control valve can be used for opening or closing the second air inlet of the one-way valve chamber;
the air exhaust valve chamber is provided with a third air inlet, a fourth air inlet, a fifth air inlet and a fourth air outlet, the third air inlet of the air exhaust valve chamber is communicated with the third air outlet of the one-way valve chamber, the fourth air inlet of the air exhaust valve chamber is communicated with the second air outlet of the air inflation valve chamber, the third air inlet of the air exhaust valve chamber is communicated with the fifth air inlet, the fifth air inlet of the air exhaust valve chamber is communicated with the parking brake cylinder, the fourth air outlet is communicated with the air, a third control valve is arranged in the air exhaust valve chamber, and the fifth air inlet and the fourth air outlet can be communicated or closed by the third control valve in an operable mode.
2. The parking brake control device for the railway wagon according to claim 1, wherein the first control valve comprises a first piston and a first elastic member, the first piston and the first air outlet are coaxially arranged, a first cavity is arranged at one end of the first piston, which faces away from the first air outlet, an opening is arranged at one end of the first cavity, which faces away from the first air outlet, one end of the first elastic member is arranged in the first cavity, and the other end of the first elastic member is connected to the inner wall of the air inflation valve chamber.
3. The railway wagon parking brake control device as claimed in, wherein the first control valve further comprises a first valve seat disposed in the first air outlet, the first piston is movable into an inner bore of the first valve seat, an end of the inner bore of the first valve seat facing the first piston is provided with a first spigot, and a first seal ring is sleeved in the first spigot.
4. A parking brake control device for a railway wagon as claimed in claim 1, wherein the second control valve comprises a second piston and a second elastic member, the second piston and the second air inlet are coaxially arranged, a second cavity is arranged at one end of the second piston, which faces away from the second air inlet, an opening is arranged at one end of the second cavity, which faces away from the second air inlet, one end of the second elastic member is arranged in the second cavity, and the other end of the second elastic member is connected to the inner wall of the one-way valve chamber.
5. The railway wagon parking brake control device as defined in claim 4, wherein the second control valve further comprises a second valve seat, the second valve seat is disposed in the second air inlet, the second piston is movable into an inner bore of the second valve seat, one end of the inner bore of the second valve seat facing the second piston is provided with a second spigot, and a second sealing ring is sleeved in the second spigot.
6. A railway wagon parking brake control device as claimed in claim 1, wherein the third control valve comprises:
a third valve seat fixedly arranged in the first end of the exhaust valve chamber, wherein the third valve seat is provided with a first communication hole along the radial direction, a third air inlet and a fifth air inlet of the exhaust valve chamber are communicated through the first communication hole, the third valve seat is provided with a second communication hole along the axial direction, one end of the second communication hole is communicated with the first communication hole, and the other end of the second communication hole extends to the end part of the third valve seat surface facing the second end of the exhaust valve chamber;
a third piston disposed coaxially with the third valve seat, the third piston being movable in the second end of the discharge valve chamber, the third piston being provided with a third communication hole penetrating in the axial direction, the third communication hole being in communication with the second communication hole;
a third resilient member disposed between the third piston and the third seat.
7. A railway wagon parking brake control device as claimed in claim 6, wherein an end of the third piston facing the third valve seat is provided with a groove in which a sealing member is disposed, the sealing member being operable to block the second communication hole;
one end of the third piston facing the third valve seat is provided with at least one fourth communication hole, and the at least one fourth communication hole is communicated with the third communication hole.
8. A railway wagon park brake control device as claimed in claim 7, wherein the seal comprises a seal seat fixedly disposed within the groove and a gasket fixedly disposed on an end of the seal seat facing the third valve seat, the gasket being operable to block the second communication aperture.
9. A railway wagon parking brake control apparatus as claimed in claim 1, wherein a bore plug is provided in the fifth air inlet.
10. A railway wagon parking brake system, characterized in that the brake system comprises a parking brake cylinder, an air source and a railway wagon parking brake control device as claimed in any one of claims 1 to 9, a first air inlet of an air charging valve chamber of the control device is communicated with the air source, and a fifth air inlet of an air discharging valve chamber of the control device is communicated with the parking brake cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010868947.XA CN112109759A (en) | 2020-08-26 | 2020-08-26 | Railway wagon parking brake control device and brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010868947.XA CN112109759A (en) | 2020-08-26 | 2020-08-26 | Railway wagon parking brake control device and brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112109759A true CN112109759A (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010868947.XA Pending CN112109759A (en) | 2020-08-26 | 2020-08-26 | Railway wagon parking brake control device and brake system |
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| Country | Link |
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| CN (1) | CN112109759A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08318851A (en) * | 1995-05-23 | 1996-12-03 | Westinghouse Air Brake Co | Control valve device in pneumatic brake system for backup |
| CN201970991U (en) * | 2011-04-14 | 2011-09-14 | 北京南车时代机车车辆机械有限公司 | Air control valve and air brake |
| CN102975707A (en) * | 2012-11-13 | 2013-03-20 | 天津机辆轨道交通装备有限责任公司 | Railway vehicle braking air distribution valve according with UIC (International Union of Railways) standard |
| CN103465929A (en) * | 2013-09-23 | 2013-12-25 | 南车长江车辆有限公司 | Automatic parking brake force retaining system for railway wagon |
| CN107472231A (en) * | 2017-09-11 | 2017-12-15 | 眉山中车制动科技股份有限公司 | A kind of nested type one-way valve structures for vehicle automatic regulating apparatus |
| CN111071288A (en) * | 2019-12-27 | 2020-04-28 | 中车长江车辆有限公司 | Railway parking brake control valve |
-
2020
- 2020-08-26 CN CN202010868947.XA patent/CN112109759A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08318851A (en) * | 1995-05-23 | 1996-12-03 | Westinghouse Air Brake Co | Control valve device in pneumatic brake system for backup |
| CN201970991U (en) * | 2011-04-14 | 2011-09-14 | 北京南车时代机车车辆机械有限公司 | Air control valve and air brake |
| CN102975707A (en) * | 2012-11-13 | 2013-03-20 | 天津机辆轨道交通装备有限责任公司 | Railway vehicle braking air distribution valve according with UIC (International Union of Railways) standard |
| CN103465929A (en) * | 2013-09-23 | 2013-12-25 | 南车长江车辆有限公司 | Automatic parking brake force retaining system for railway wagon |
| CN107472231A (en) * | 2017-09-11 | 2017-12-15 | 眉山中车制动科技股份有限公司 | A kind of nested type one-way valve structures for vehicle automatic regulating apparatus |
| CN111071288A (en) * | 2019-12-27 | 2020-04-28 | 中车长江车辆有限公司 | Railway parking brake control valve |
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