CN110949442A - Brake cylinder pressure control device - Google Patents
Brake cylinder pressure control device Download PDFInfo
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- CN110949442A CN110949442A CN201911301578.XA CN201911301578A CN110949442A CN 110949442 A CN110949442 A CN 110949442A CN 201911301578 A CN201911301578 A CN 201911301578A CN 110949442 A CN110949442 A CN 110949442A
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- brake
- pressure
- control rod
- brake cylinder
- control
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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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses a brake cylinder pressure control device which is arranged between a brake and a brake cylinder, the pressure control device comprises a valve body and a control rod arranged in the valve body, one end of the control rod is provided with a control spring, a train pipe pressure signal interface, a brake pressure input interface and a brake cylinder pressure output interface are arranged on the valve body, a first valve port between the train pipe pressure signal interface and the brake cylinder pressure output interface is always in a closed state, a second valve port between the brake pressure input interface and the brake cylinder pressure output interface is controlled to be opened and closed through the movement of the control rod, an air path for communicating the brake pressure input interface and the brake cylinder pressure output interface is arranged in the control rod, and an adjustable shrinkage plug is arranged in an air path of the control rod. The invention can adjust the output pressure of the brake according to the vehicle requirement, thereby controlling the rising speed and the falling speed of the brake pressure and effectively improving the adaptability of the brake.
Description
Technical Field
The invention belongs to the technical field of brake cylinders of railway vehicles, and particularly relates to a brake cylinder pressure control device.
Background
The brake cylinder is an output device of the braking force of the railway vehicle, the requirements of train operation speed regulation, station entering parking or emergency parking on the braking force of the train are different, and the change conditions of the acting force and the force value output by the brake cylinder can influence the train operation quality, the longitudinal impulse size, the car coupler force size and the braking distance.
When the train is braked, the brake machine provides air pressure for the brake cylinder, and the control characteristic of the brake machine determines the pressure characteristic of the brake cylinder. In emergency braking of a train, a brake cylinder is required to output a braking force quickly to stop the train within a short distance, and a braking force is required to increase in stages to reduce longitudinal impact between vehicles, so that a front braking force increases quickly and a rear braking force increases slowly.
The existing brake directly controls the output speed of braking force, a control device is not arranged between the brake and a brake cylinder, the requirements of different vehicle types and transportation routes on the braking force are different, the development period of the brake is long, and different transportation requirements are difficult to meet, so that the existing brake has poor adaptability.
Disclosure of Invention
The invention aims to: in view of the above problems, a brake cylinder pressure control device is provided that can improve brake adaptability by adjusting brake output pressure according to vehicle requirements.
The technical scheme of the invention is realized as follows: a brake cylinder pressure control apparatus characterized by: the pressure control device is arranged between a brake and a brake cylinder, the brake and the pressure control device are respectively connected with a train pipe, the pressure control device is used for controlling and adjusting the output pressure of the brake, the pressure control device comprises a valve body and a control rod arranged in the valve body, one end of the control rod is provided with a control spring, the valve body is provided with a train pipe pressure signal interface, a brake pressure input interface and a brake cylinder pressure output interface, a first valve port between the train pipe pressure signal interface and the brake cylinder pressure output interface is always in a closed state, a second valve port between the brake pressure input interface and the brake cylinder pressure output interface is controlled to be opened and closed through the movement of the control rod, and an air passage for communicating the brake pressure input interface and the brake cylinder pressure output interface is arranged in the control rod, an adjustable shrinkage plug is arranged in the gas path of the control rod.
According to the brake cylinder pressure control device, the control spring is arranged in the valve body and is communicated with the train pipe pressure signal interface, one end of the control spring abuts against the inner wall of the valve body, the other end of the control spring abuts against the end part of the control rod, and the control spring is always in a compressed state.
In the brake cylinder pressure control device according to the present invention, the first seal ring is fitted to the outer periphery of the control lever corresponding to the first valve port, and the first seal ring is always kept in a sealed state with respect to the first valve port during movement of the control lever.
According to the brake cylinder pressure control device, the second sealing ring is embedded on the periphery of the lower portion of the control rod, when the second valve port is not closed, an air channel is formed between the control rod and the second valve port, and pressure air of the brake flows to a brake cylinder through an air channel which is arranged in the control rod and can be blocked in a shrinkage mode and the air channel formed between the control rod and the second valve port; when the control rod moves upwards, a second sealing ring on the control rod seals a second valve port, and pressure air of the brake machine flows to the brake cylinder only through an air passage which is arranged in the control rod and can be adjusted and blocked.
According to the brake cylinder pressure control device, the lower part of the control rod is concave, when the control rod is located at the lower limit position, a bottom cavity is formed between the lower part of the control rod and the inner wall of the valve body, a radial through hole communicated with a brake pressure input interface is formed in the side wall of the bottom cavity, and the bottom cavity is communicated with an air channel in the control rod through an adjustable shrinkage plug.
The device is arranged between the brake and the brake cylinder, and can adjust the output pressure of the brake according to the vehicle requirements, so that the rising speed and the falling speed of the brake pressure are controlled.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic representation of the use of the present invention.
The labels in the figure are: the pressure control device comprises a pressure control device 1, a brake machine 2, a brake cylinder 3, a train pipe 4, a valve body 5, a control rod 6, a control spring 7, a train pipe pressure signal interface 8, a brake machine pressure input interface 9, a brake cylinder pressure output interface 10, a first valve port 11, a second valve port 12, an air passage 13, an adjustable shrinkage plug 14, a first sealing ring 15, a second sealing ring 16, an air passage groove 17, a bottom cavity 18 and a radial through hole 19.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the pressure control device 1 is arranged between a brake 2 and a brake cylinder 3, the brake 2 and the pressure control device 1 are respectively connected with a train pipe 4, and the pressure control device 1 is used for controlling and adjusting the output pressure of the brake 2 and controlling the rising speed and the falling speed of the brake pressure, so that the adaptability of the brake is effectively improved, and different transportation requirements are met.
As shown in fig. 2, the pressure control device 1 includes a valve body 5 and a control rod 6 disposed in the valve body 5, a control spring 7 is disposed at one end of the control rod 6, a train pipe pressure signal interface 8, a brake pressure input interface 9 and a brake cylinder pressure output interface 10 are disposed on the valve body 5, a first valve port 11 between the train pipe pressure signal interface 8 and the brake cylinder pressure output interface 10 is always in a closed state, a second valve port 12 between the brake pressure input interface 9 and the brake cylinder pressure output interface 10 is controlled to be opened and closed by movement of the control rod 6, an air passage 13 for communicating the brake pressure input interface 9 and the brake cylinder pressure output interface 10 is disposed in the control rod 6, and an adjustable shrinkage plug 14 is disposed in the air passage 13 of the control rod 6.
In this embodiment, the control spring 7 is disposed in the valve body 5 and is in communication with the train pipe pressure signal interface 8, one end of the control spring 10 abuts against the inner wall of the valve body 5, the other end of the control spring abuts against the end of the control rod 6, the control spring 10 is always in a compressed state, a first sealing ring 15 is embedded on the periphery of the control rod 6 corresponding to the first valve port 11, and the first sealing ring 15 is always kept in a sealing state with respect to the first valve port 11 during the movement of the control rod 6; a second sealing ring 16 is embedded on the lower periphery of the control rod 6, when the second valve port 12 is not closed, an air channel 17 is formed between the control rod 6 and the second valve port 12, and the pressure air of the brake 2 flows to the brake cylinder 3 through an air channel 13 which is internally provided with an adjustable shrinkage plug 14 in the control rod 6 and the air channel formed between the control rod 6 and the second valve port 12; when the control rod 6 moves upwards, the second sealing ring 13 on the control rod 6 seals the second valve port 12, and the pressure air of the brake 2 flows to the brake cylinder 3 only through the air passage 13 provided with the adjustable choke 14 in the control rod 6.
The lower portion of the control rod 6 is concave, when the control rod 6 is located at the lower limit position, a bottom cavity 18 is formed between the lower portion of the control rod 6 and the inner wall of the valve body 5, a radial through hole 19 communicated with the brake pressure input interface 9 is formed in the side wall of the bottom cavity 18, and the bottom cavity 18 is communicated with an air channel 13 in the control rod 6 through an adjustable shrinkage plug 14.
The working principle of the invention is as follows:
the control rod moves up and down according to the pressure of the train pipe and the pressure change condition of the brake, when the pressure of the train pipe is reduced, the pressure of the brake is increased, the pressure difference acting force between the brake and the train pipe pushes the control rod to overcome the acting force of the control spring to move upwards, the second valve port is sealed by the second sealing ring, pressure air from the brake can only flow to the brake cylinder through the adjustable-shrinkage plug on the control rod, and the adjustable-shrinkage plug aperture can be adjusted according to different requirements, so that the pressure change speed of the brake cylinder is controlled; when the second valve port is not closed, pressure air of the brake can flow to the brake cylinder through the adjustable shrinkage plug, the air channel groove between the control rod and the valve body, the section of the air channel groove is large, and the pressure change of the brake cylinder is rapid.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A brake cylinder pressure control apparatus characterized by: the pressure control device (1) is arranged between a brake (2) and a brake cylinder (3), the brake (2) and the pressure control device (1) are respectively connected with a train pipe (4), the pressure control device (1) is used for controlling and adjusting the output pressure of the brake (2), the pressure control device (1) comprises a valve body (5) and a control rod (6) arranged in the valve body (5), a control spring (7) is arranged at one end of the control rod (6), a train pipe pressure signal interface (8), a brake pressure input interface (9) and a brake cylinder pressure output interface (10) are arranged on the valve body (5), a first valve port (11) between the train pipe pressure signal interface (8) and the brake cylinder pressure output interface (10) is always in a closed state, and a second valve port (12) between the brake pressure input interface (9) and the brake cylinder pressure output interface (10) is controlled by a control valve The movement of the lever (6) controls the opening and closing of the lever, an air passage (13) for communicating a brake pressure input interface (9) with a brake cylinder pressure output interface (10) is arranged in the lever (6), and an adjustable shrinkage plug (14) is arranged in the air passage (13) of the lever (6).
2. Brake cylinder pressure control device according to claim 1, characterized in that: the control spring (7) is arranged in the valve body (5) and is communicated with a train pipe pressure signal interface (8), one end of the control spring (10) abuts against the inner wall of the valve body (5), the other end of the control spring abuts against the end part of the control rod (6), and the control spring (10) is always in a compression state.
3. Brake cylinder pressure control device according to claim 1, characterized in that: a first sealing ring (15) is embedded on the periphery of the control rod (6) corresponding to the first valve port (11), and the first sealing ring (15) is always kept in a sealing state with respect to the first valve port (11) in the moving process of the control rod (6).
4. Brake cylinder pressure control device according to claim 1, characterized in that: a second sealing ring (16) is embedded on the periphery of the lower part of the control rod (6), when the second valve port (12) is not closed, an air channel groove (17) is formed between the control rod (6) and the second valve port (12), and pressure air of the brake (2) simultaneously flows to the brake cylinder (3) through an air channel (13) which is provided with an adjustable shrinkage plug (14) in the control rod (6) and the air channel groove (17) formed between the control rod (6) and the second valve port (12); when the control rod (6) moves upwards, a second sealing ring (13) on the control rod (6) seals a second valve port (12), and the pressure air of the brake (2) flows to the brake cylinder (3) only through an air passage (13) which is provided with an adjustable shrinkage plug (14) in the control rod (6).
5. Brake cylinder pressure control device according to claim 4, characterized in that: the brake pressure regulating valve is characterized in that the lower portion of the control rod (6) is concave, when the control rod (6) is located at a lower limit position, a bottom cavity (18) is formed between the lower portion of the control rod (6) and the inner wall of the valve body (5), a radial through hole (19) communicated with a brake pressure input interface (9) is formed in the side wall of the bottom cavity (18), and the bottom cavity (18) is communicated with an inner air channel (13) of the control rod (6) through an adjustable shrinkage plug (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911301578.XA CN110949442A (en) | 2019-12-17 | 2019-12-17 | Brake cylinder pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911301578.XA CN110949442A (en) | 2019-12-17 | 2019-12-17 | Brake cylinder pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110949442A true CN110949442A (en) | 2020-04-03 |
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ID=69982195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911301578.XA Pending CN110949442A (en) | 2019-12-17 | 2019-12-17 | Brake cylinder pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110949442A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114834419A (en) * | 2022-05-13 | 2022-08-02 | 中车齐齐哈尔车辆有限公司 | Emergency valve with pressurization function |
-
2019
- 2019-12-17 CN CN201911301578.XA patent/CN110949442A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114834419A (en) * | 2022-05-13 | 2022-08-02 | 中车齐齐哈尔车辆有限公司 | Emergency valve with pressurization function |
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