CN113859203B - Brake pressure control device and method - Google Patents
Brake pressure control device and method Download PDFInfo
- Publication number
- CN113859203B CN113859203B CN202111232718.XA CN202111232718A CN113859203B CN 113859203 B CN113859203 B CN 113859203B CN 202111232718 A CN202111232718 A CN 202111232718A CN 113859203 B CN113859203 B CN 113859203B
- Authority
- CN
- China
- Prior art keywords
- valve
- exhaust
- normally closed
- pressure
- brake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract description 84
- 238000001914 filtration Methods 0.000 claims description 9
- 239000000969 carrier Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000000116 mitigating effect Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000004044 response Effects 0.000 abstract description 2
- 230000009469 supplementation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000013022 venting Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
- B60T15/184—Railway control or brake valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses a brake pressure control device and a method, wherein the pressure required by common braking is set through a main regulating valve, when the load is carried, the output pressure of an auxiliary reducing and saving valve is given to the main regulating valve by taking an electromagnetic valve as a carrier for pressure supplementation, and the brake pressure is improved; the stepless change of final output pressure of the main regulating valve can be realized by controlling the switching-on and pressure maintaining functions of the electromagnetic valve through the controller, and when the braking pressure needs to be released quickly, the air channel of the internal one-way valve is used for realizing the maximum quick exhaust, so that the internal throttling of the main regulating valve is avoided; the invention adopts the piston type inside the remote relief pneumatic control valve and the brake limiting pneumatic control valve, is safe and reliable in use and has quick response in function; the internal structure of the brake pressure control device is simplified, the running safety of the vehicle is improved, and the maintenance and overhaul of the vehicle by a user are facilitated; in order to meet various use environments of the vehicle, the functions of braking limitation and remote relief can be realized.
Description
Technical Field
The invention relates to the field of vehicle braking, in particular to a braking pressure control device and method.
Background
With the development of modern construction and traffic of domestic cities, urban rail vehicles in China play an increasingly important role in urban transportation. The "fourteen five" plan points out for rail transit advice: and (3) overall promotion of infrastructure construction. The construction of the strong traffic country is quickened, the comprehensive transportation large channel, the comprehensive transportation hub and the logistics network are perfected, the rail traffic networking of urban groups and urban rings is quickened, and the traffic access depth of rural areas and border areas is improved.
At present, the common braking system mode of urban rail transit mainly comprises a frame control braking system and a vehicle control braking system. The brake control device in the vehicle control mode comprises at least four parts of a brake electromagnetic valve, a release electromagnetic valve, a relay valve and an anti-slip exhaust valve. The relay valve plays a role in controlling braking pressure, but the internal structure consists of a shutoff valve, an air supply valve, an exhaust valve, a template, an overcharging plunger and a mandril, so that the relay valve is complex in structure, complicated in pipeline layout and difficult to maintain.
Therefore, how to simplify the structure of the brake control pressure device becomes a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a brake pressure control device and a brake pressure control method.
The aim of the invention is realized by the following technical scheme: the brake pressure control device comprises a gas circuit board, an integrated pneumatic control part, an integrated pressure regulating part and a controller, wherein the integrated pneumatic control part, the integrated pressure regulating part and the controller are arranged on the gas circuit board;
the integrated pneumatic control part comprises a remote relief pneumatic control valve, a brake limiting pneumatic control valve, a second normally closed solenoid valve with exhaust, and a third normally closed solenoid valve with exhaust; the remote relief pneumatic control valve and the brake limiting pneumatic control valve are connected with an input port of the brake pressure control device through an air passage, a second normally closed exhaust solenoid valve is arranged on the air passage between the remote relief pneumatic control valve and the input port, and a third normally closed exhaust solenoid valve is arranged on the air passage between the brake limiting pneumatic control valve and the input port;
the integrated pressure regulating part comprises a main regulating valve, an auxiliary regulating valve, a normally closed solenoid valve without exhaust and a first normally closed solenoid valve with exhaust; the main regulating valve and the auxiliary regulating valve are connected with an input port of the brake pressure control device through an air passage; the main regulating valve and the auxiliary regulating valve are connected through a gas path, and a normally closed solenoid valve without exhaust and a first normally closed solenoid valve with exhaust are arranged on the gas path;
the main regulating valve, the remote relieving pneumatic control valve and the brake limiting pneumatic control valve are sequentially connected with a first output port of the brake pressure control device through air channels, an independent air channel is separated from the air channel between the remote relieving pneumatic control valve and the brake limiting pneumatic control valve, and the independent air channel is directly connected with the first output port without passing through the brake limiting pneumatic control valve;
the controller is simultaneously connected with the normally closed solenoid valve without exhaust, the first normally closed solenoid valve with exhaust, the second normally closed solenoid valve with exhaust and the third normally closed solenoid valve with exhaust, and the controller controls the on-off of the normally closed solenoid valve without exhaust and the first normally closed solenoid valve with exhaust to play roles in air charging, pressure maintaining and exhaust, and the output pressure is designed to realize stepless control.
Further, the integrated pressure regulating part further includes a filtering device installed at a rear end of the input port of the brake pressure control device for filtering impurities inside the pipe.
Further, a throttling device is arranged on a gas path between the main regulating valve and the normally closed electromagnetic valve without exhaust, so that the gas flow rate is reduced.
Further, two ends of the main regulating valve are connected with an air passage in parallel, a one-way valve is arranged on the air passage, reverse exhaust is realized through the action of the one-way valve, and the pressure of the first output port is quickly reduced.
Further, the brake pressure control device further comprises a second output port, and the second output port is directly connected with the filtering device through an air path.
Further, the remote relief pneumatic control valve and the brake limiting pneumatic control valve are internally piston-type.
The invention also provides a brake pressure control method, which comprises the following steps of controlling the five conditions of service braking, braking limitation, remote release, load braking and release braking:
and (3) common braking: the controller is not electrified to the normally closed solenoid valve without exhaust, the first normally closed solenoid valve with exhaust, the second normally closed solenoid valve with exhaust and the third normally closed solenoid valve with exhaust, the auxiliary regulating valve is not operated, the air flow input by the input port enters the inside of the main regulating valve to carry out pressure regulation output, and the output air pressure regulated by the main regulating valve is finally output to the downstream brake cylinder by taking the remote relief pneumatic control valve and the brake limiting pneumatic control valve as carriers;
brake limit: the controller is used for electrifies the third normally closed exhaust electromagnetic valve, at the moment, part of the air flow input by the input port passes through the third normally closed exhaust electromagnetic valve, the electromagnetic valve air pressure acts on the internal piston of the brake limiting air control valve, so that the piston switching air flow is cut off, and the output air pressure regulated by the main regulating valve is directly output to the downstream brake cylinder through an independent air passage between the remote release air control valve and the brake limiting air control valve after passing through the remote release air control valve;
remote mitigation: the controller electrifies the second normally closed electromagnetic valve with exhaust, at the moment, part of the air flow input by the input port passes through the second normally closed electromagnetic valve with exhaust, the electromagnetic valve pressure acts on the internal piston of the remote relief pneumatic control valve, so that the piston switching air flow is cut off, and the brake cylinder is in a pressure maintaining state;
and (3) load braking: the controller electrifies the normally closed solenoid valve without exhaust and the first normally closed solenoid valve with exhaust according to the weight signal of the vehicle body, and the auxiliary pressure regulating valve outputs pressure to the inside of the main regulating valve so as to improve the output pressure of the main regulating valve;
releasing the brake: the controller is electrified to the normally closed solenoid valve without exhaust according to the weight signal of the vehicle body, is electrified to the first normally closed solenoid valve with exhaust, the internal air pressure of the main regulating valve is discharged through the exhaust port of the normally closed solenoid valve with exhaust, and when the required braking pressure is reached, the controller is powered off to the normally closed solenoid valve without exhaust, so that the pressure is prevented from being too low due to transitional exhaust of the main regulating valve.
The invention has the beneficial effects that:
(1) According to the invention, the main regulating valve is used for setting the pressure required by the service braking, and the electromagnetic valve is used as a carrier to give the output pressure of the auxiliary reducing valve to the main regulating valve for pressure supplementation when the load is carried, so that the braking pressure is improved;
(2) The invention can realize the stepless change of the final output pressure of the main regulating valve by controlling the switching-on and pressure maintaining functions of the electromagnetic valve through the controller, and the device greatly optimizes the complexity of the pipeline layout due to the high integration, thereby not only improving the running safety of the vehicle, but also facilitating the maintenance and overhaul of the vehicle by a user;
(3) According to the invention, when the braking pressure needs to be released quickly, the maximum quick exhaust is realized through the air passage of the internal one-way valve, so that the internal throttling of the main regulating valve is avoided;
(4) In the invention, in order to meet various use environments of the vehicle, the functions of braking limitation and remote release can be realized;
(5) In the invention, the remote relief pneumatic control valve and the brake limiting pneumatic control valve are internally provided with the piston type, so that the pneumatic control valve is safe and reliable to use and quick in functional response.
Drawings
FIG. 1 is a schematic diagram of the structural principle of the present invention;
FIG. 2 is a schematic diagram of the assembly logic of the present invention.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
As shown in fig. 1 and 2, the present invention provides a brake pressure control device, which includes a gas circuit board 4-3, and an integrated pneumatic control part 4-1, an integrated pressure regulating part 4-2 and a controller 2 mounted on the gas circuit board 4-3;
the integrated pneumatic control part 4-1 comprises a remote relief pneumatic control valve 3-6, a brake limiting pneumatic control valve 3-7, a second normally closed solenoid valve with exhaust 1-3 and a third normally closed solenoid valve with exhaust 1-4; the remote relief pneumatic control valve 3-6 and the brake limiting pneumatic control valve 3-7 are connected with an input port 5-1 of the brake pressure control device through an air passage, a second normally closed exhaust electromagnetic valve 1-3 is arranged on the air passage between the remote relief pneumatic control valve 3-6 and the input port 5-1, and a third normally closed exhaust electromagnetic valve 1-4 is arranged on the air passage between the brake limiting pneumatic control valve 3-7 and the input port 5-1; the remote relief pneumatic control valve 3-6 and the brake limiting pneumatic control valve 3-7 adopt piston type inside
The integrated pressure regulating part 4-2 comprises a main regulating valve 3-1, a secondary regulating valve 3-2, a throttling device 3-4, a filtering device 3-5, a normally closed solenoid valve without exhaust valve 1-1 and a first normally closed solenoid valve with exhaust valve 1-2; the main regulating valve 3-1 and the auxiliary regulating valve 3-2 are connected with an input port 5-1 of the brake pressure control device through an air circuit; the main regulating valve 3-1 and the auxiliary regulating valve 3-2 are connected through a gas path, and a normally closed solenoid valve 1-1 without exhaust and a first normally closed solenoid valve 1-2 with exhaust are arranged on the gas path;
the filtering device 3-5 is arranged at the rear end of the input port 5-1 of the brake pressure control device and is used for filtering impurities in a pipeline, so that the inside of a product is ensured to be clean, and the product failure caused by the impurities entering the inside of the product is avoided.
The throttling device 3-4 is arranged on a gas path between the main regulating valve 3-1 and the normally closed solenoid valve 1-1 without exhaust, so that the gas flow speed is reduced, the air pressure is captured more accurately, and the control sensitivity is higher.
The two ends of the main regulating valve 3-1 are connected in parallel with an air passage, the air passage is provided with a one-way valve 3-3, when the pressure of the input port 5-1 is rapidly reduced, the wheel locking caused by overlarge downstream braking force is prevented, the pressure of the output port 5-2 needs to be rapidly reduced, and the output port 5-2 is reversely exhausted through the third air flow 6-3 under the action of the one-way valve 3-3, so that the downstream pressure can be rapidly reduced, and the rapid pressure relief function is achieved.
The main regulating valve 3-1, the remote relieving pneumatic control valve 3-6 and the brake limiting pneumatic control valve 3-7 are sequentially connected with the first output port 5-2 of the brake pressure control device through air paths, an independent air path is separated from the air path between the remote relieving pneumatic control valve 3-6 and the brake limiting pneumatic control valve 3-7, and the independent air path is directly connected with the first output port 5-2 without passing through the brake limiting pneumatic control valve 3-7;
the controller 2 is simultaneously connected with the normally closed solenoid valve 1-1 without exhaust, the first normally closed solenoid valve 1-2 with exhaust, the second normally closed solenoid valve 1-3 with exhaust and the third normally closed solenoid valve 1-4 with exhaust, and the controller 2 controls the on-off of the normally closed solenoid valve 1-1 without exhaust and the first normally closed solenoid valve 1-2 with exhaust to perform the functions of air charging, pressure maintaining and exhaust, and the output pressure is designed to realize stepless control.
The brake pressure control device further comprises a second output port 5-3, the second output port 5-3 is directly connected with the filtering device 3-5 through a gas circuit, the output pressure not only protects the cleanliness of downstream products through the filtering device 3-5, but also ensures the control pressure to the greatest extent without pressure adjustment. In urban rail vehicles, a plurality of electromagnetic valves are arranged, wherein the control switching is performed through higher air source pressure, the input port of the downstream electromagnetic valve can be integrated to a brake pressure control device for simplifying the pipeline layout, and the second output port 5-3 can play a role in high-pressure diversion.
The invention also provides a brake pressure control method, which comprises the following steps of controlling the five conditions of service braking, braking limitation, remote release, load braking and release braking:
and (3) common braking: because of the service braking, the controller 2 does not energize the normally closed solenoid valve without venting 1-1 and the first normally closed solenoid valve with venting 1-2, the second normally closed solenoid valve with venting 1-3, the third normally closed solenoid valve with venting 1-4, and the solenoid valves are cut off. The input pressure air flow of the input port 5-1 is branched into three paths, namely a first air flow 6-1, a second air flow 6-2 and a fifth air flow 6-5, wherein the first air flow 6-1 is used as the input pressure of the auxiliary regulating valve 3-2, and the auxiliary regulating valve 3-2 cannot participate in working because the normally closed electromagnetic valve 1-1 without exhaust and the first normally closed electromagnetic valve 1-2 with exhaust are cut off when the power is cut off, and the output air pressure of the auxiliary regulating valve 3-2 cannot enter the main regulating valve 3-1 at the moment; the second air flow 6-2 is divided into two paths in the main regulating valve 3-1, wherein one path is the third air flow 6-3 which is cut off by the one-way valve 3-3 and still cannot participate in work because the third air flow is cut off; the other path directly enters the main regulating valve 3-1 to carry out pressure regulation output, because the second normally closed exhaust solenoid valve 1-3 and the third normally closed exhaust solenoid valve 1-4 are cut off, the remote release pneumatic control valve 3-6 and the brake limiting pneumatic control valve 3-7 are in a straight-through state, and the output pressure after the regulation of the main regulating valve 3-1 is finally output to a downstream brake cylinder by taking the remote release pneumatic control valve 3-6 and the brake limiting pneumatic control valve 3-7 as carriers; in summary, only the main pressure regulating valve 3-1 performs pressure regulation as an output pressure to supply air to the brake cylinder.
Brake limit: as can be seen from the schematic diagram 1, the fifth air flow 6-5 branches off the sixth air flow 6-6 on the pipeline to supply air to the second normally closed air-vent solenoid valve 1-3, and a fourth air flow 6-4 is arranged between the remote relief air-control valve 3-6 and the brake limiting air-control valve 3-7, and the fourth air flow 6-4 exists independently and directly flows to the brake cylinder without passing through the inside of the brake limiting air-control valve 3-7. Except that the effective path of the brake limiting pneumatic control valve 3-7 is lower than the effective path of the inner part of the brake limiting pneumatic control valve. Therefore, when the brake limitation is required, the controller 2 only needs to electrify the third normally closed exhaust electromagnetic valve 1-4, and the electromagnetic valve air pressure acts on the piston inside the brake limitation pneumatic control valve 3-7, so that the piston switching air flow is cut off. At this time, the brake cylinder air pressure only flows in by the fourth air flow 6-4, the braking force is limited, when the braking limitation needs to be released, only the third normally closed electromagnetic valve 1-4 with the exhaust valve is required to be powered off, the air pressure acting on the piston is discharged along with the exhaust port of the electromagnetic valve, the piston is reset, and at this time, the air flow in the brake limitation air control valve 3-7 is conducted, and the braking limitation is released.
Remote mitigation: as can be seen from the schematic diagram 1, the fifth air flow 6-5 branches off the seventh air flow 6-7 on the pipeline to supply air to the third normally closed electromagnetic valve with air exhaust 1-4, and when the pressure of the brake cylinder meets the use requirement, the upstream air pressure needs to be cut off or maintained to maintain the braking force. At the moment, only the controller 2 is needed to electrify the second normally closed electromagnetic valve 1-3 with exhaust, the electromagnetic valve air pressure acts on the piston in the remote relief pneumatic control valve 3-6, and the piston switching air flow is cut off. At the moment, the brake cylinder is in a pressure maintaining state and is cut off from upstream air flow; and when the remote relief is needed to be relieved, only the second normally closed electromagnetic valve 1-3 with the exhaust valve is required to be powered off, the air pressure acting on the piston is discharged along with the exhaust port of the electromagnetic valve, the piston is reset, and at the moment, the air flow in the air control valve 3-6 is conducted for remote relief, and the brake limit is relieved.
And (3) load braking: because the weight of the vehicle body is changed by the quantity of passengers in the running process of the vehicle, the braking pressure generated by the common braking cannot completely and effectively meet the requirement of braking force at the moment, when the vehicle is loaded, the controller 2 controls the normally closed solenoid valve 1-2 without exhaust and the first normally closed solenoid valve 1-2 with exhaust to be electrified according to the weight signal of the vehicle body, the output pressure of the auxiliary regulating valve 3-2 is input into the main regulating valve 3-1, the output pressure of the main regulating valve 3-1 is improved, and when the required braking pressure is reached, the controller 2 can cut off and retain the power of the normally closed solenoid valve 1-1 without exhaust and the first normally closed solenoid valve 1-2 at any time to prevent the supplement of the pressure of the auxiliary regulating valve 3-2, so that the effective control of the braking force is realized.
Releasing the brake: when the passenger gets out of the station, the weight of the vehicle body is reduced, and the load pressure is gradually released, so that the brake pressure reserved in the last step is not needed, and the internal pressure of the main regulating valve 3-1 is required to be released. The controller 2 energizes the normally closed solenoid valve 1-1 without exhaust according to the weight signal of the vehicle body, and de-energizes the first normally closed solenoid valve 1-2 with exhaust, the internal air pressure of the main regulating valve 3-1 is discharged through the air outlet of the first normally closed solenoid valve 1-2 with exhaust, and when the required braking pressure is reached, the controller 2 de-energizes the normally closed solenoid valve 1-1 without exhaust, so as to prevent the main regulating valve 3-1 from excessively exhausting and causing the pressure to be too low.
The load braking and the release braking can be called a weighing control process, and the required braking force can be adjusted at any time according to the self weight of the vehicle. However, even if there is a hidden trouble, for example, in the weighing process, the air inlet or exhaust speed is too fast, so that the brake air pressure cannot be precisely controlled due to the hysteresis executed by the controller 2, so that in order to avoid the risk of complaining, the throttle device 3-4 is newly added in design, the air flow rate is reduced, the air pressure is more precisely captured, and the control sensitivity is higher.
Because the normally closed solenoid valve 1-1 without exhaust and the first normally closed solenoid valve 1-2 with exhaust are the most main bridge between the auxiliary regulating valve 3-2 and the main regulating valve 3-1, the output pressure of the main regulating valve 3-1 is finally determined; the controller 2 can control the on-off of the normally closed solenoid valve 1-1 without exhaust and the first normally closed solenoid valve 1-2 with exhaust at any time to perform the functions of air charging, pressure maintaining and exhaust, and the output pressure achieves the function of stepless control in design.
The above-described embodiments are intended to illustrate the present invention, not to limit it, and any modifications and variations made thereto are within the spirit of the invention and the scope of the appended claims.
Claims (7)
1. The brake pressure control device is characterized by comprising a gas circuit board (4-3), an integrated pneumatic control part (4-1), an integrated pressure regulating part (4-2) and a controller (2), wherein the integrated pneumatic control part (4-1), the integrated pressure regulating part (4-2) and the controller (2) are arranged on the gas circuit board (4-3);
the integrated pneumatic control part (4-1) comprises a remote relief pneumatic control valve (3-6), a brake limiting pneumatic control valve (3-7), a second normally closed exhaust electromagnetic valve (1-3) and a third normally closed exhaust electromagnetic valve (1-4); the remote relief pneumatic control valve (3-6) and the brake limiting pneumatic control valve (3-7) are connected with an input port (5-1) of the brake pressure control device through a gas path, a second normally closed exhaust electromagnetic valve (1-3) is arranged on the gas path between the remote relief pneumatic control valve (3-6) and the input port (5-1), and a third normally closed exhaust electromagnetic valve (1-4) is arranged on the gas path between the brake limiting pneumatic control valve (3-7) and the input port (5-1);
the integrated pressure regulating part (4-2) comprises a main regulating valve (3-1), a secondary regulating valve (3-2), a normally closed solenoid valve without exhaust (1-1) and a first normally closed solenoid valve with exhaust (1-2); the main regulating valve (3-1) and the auxiliary regulating valve (3-2) are connected with an input port (5-1) of the brake pressure control device through an air path; the main regulating valve (3-1) and the auxiliary regulating valve (3-2) are connected through an air passage, and a normally closed solenoid valve (1-1) without exhaust and a first normally closed solenoid valve (1-2) with exhaust are arranged on the air passage;
the main regulating valve (3-1), the remote relieving pneumatic control valve (3-6) and the brake limiting pneumatic control valve (3-7) are sequentially connected with a first output port (5-2) of the brake pressure control device through air paths, an independent air path is separated from the air path between the remote relieving pneumatic control valve (3-6) and the brake limiting pneumatic control valve (3-7), and the independent air path is directly connected with the first output port (5-2) without passing through the brake limiting pneumatic control valve (3-7);
the controller (2) is simultaneously connected with the normally closed solenoid valve without exhaust valve (1-1), the first normally closed solenoid valve with exhaust valve (1-2), the second normally closed solenoid valve with exhaust valve (1-3) and the third normally closed solenoid valve with exhaust valve (1-4), the normally closed solenoid valve without exhaust valve (1-1) and the first normally closed solenoid valve with exhaust valve (1-2) are controlled to be opened and closed by the controller (2), the functions of air charging, pressure maintaining and exhaust are achieved, and the output pressure is designed to achieve stepless control.
2. A brake pressure control device according to claim 1, characterized in that the integrated pressure regulating part (4-2) further comprises a filter device (3-5), the filter device (3-5) being mounted at the rear end of the inlet (5-1) of the brake pressure control device for filtering impurities inside the pipeline.
3. A brake pressure control device according to claim 1, characterized in that a throttle device (3-4) is mounted on the air path between the main regulator valve (3-1) and the normally closed solenoid valve (1-1) without exhaust, reducing the air flow rate.
4. The brake pressure control device according to claim 1, wherein two ends of the main regulating valve (3-1) are connected in parallel with a gas path, a one-way valve (3-3) is arranged on the gas path, and reverse exhaust is realized through the action of the one-way valve (3-3) to quickly reduce the pressure of the first output port (5-2).
5. A brake pressure control device according to claim 1, characterized in that the brake pressure control device further comprises a second outlet (5-3), the second outlet (5-3) being directly connected to the filter device (3-5) via an air circuit.
6. A brake pressure control device according to claim 1, characterized in that the remote relief pneumatic control valve (3-6) and the brake limiting pneumatic control valve (3-7) are internally piston-type.
7. A brake pressure control method based on the control device according to any one of claims 1 to 6, characterized by comprising control of five conditions of service braking, brake limiting, remote relief, load braking and release braking, comprising the following steps:
and (3) common braking: the controller (2) does not electrify the normally closed electromagnetic valve (1-1) without exhaust, the first normally closed electromagnetic valve (1-2) with exhaust, the second normally closed electromagnetic valve (1-3) with exhaust and the third normally closed electromagnetic valve (1-4) with exhaust, the auxiliary regulating valve (3-2) does not work, the air flow input by the input port (5-1) enters the main regulating valve (3-1) to carry out pressure regulation output, and the output air pressure regulated by the main regulating valve (3-1) is used for remotely relieving the air control valve (3-6) and the brake limiting air control valve (3-7) as carriers and finally outputting the carriers to the downstream brake cylinder;
brake limit: the controller (2) electrifies a third normally closed exhaust electromagnetic valve (1-4), at the moment, part of air flow input by the input port (5-1) passes through the third normally closed exhaust electromagnetic valve (1-4), the electromagnetic valve air pressure acts on an internal piston of the brake limiting air control valve (3-7) to cut off the piston switching air flow, and after the output air pressure regulated by the main regulating valve (3-1) passes through the remote relieving air control valve (3-6), the air flow is directly output to a downstream brake cylinder through an independent air passage between the remote relieving air control valve (3-6) and the brake limiting air control valve (3-7);
remote mitigation: the controller (2) electrifies the second normally closed electromagnetic valve (1-3) with exhaust, at the moment, part of the air flow input by the input port (5-1) passes through the second normally closed electromagnetic valve (1-3) with exhaust, the electromagnetic valve air pressure acts on the internal piston of the remote relief pneumatic control valve (3-6), so that the piston switching air flow is cut off, and the brake cylinder is in a pressure maintaining state;
and (3) load braking: the controller (2) is used for electrifying the normally closed solenoid valve (1-1) without exhaust and the first normally closed solenoid valve (1-2) with exhaust according to the weight signal of the vehicle body, and the auxiliary pressure regulating valve (3-2) outputs pressure to the inside of the main regulating valve (3-1) so as to improve the output pressure of the main regulating valve (3-1);
releasing the brake: the controller (2) is used for electrifying the normally closed solenoid valve (1-1) without exhaust according to the weight signal of the vehicle body, electrifying the first normally closed solenoid valve (1-2) with exhaust, exhausting the internal air pressure of the main regulating valve (3-1) through the exhaust port of the normally closed solenoid valve (1-2) with exhaust, and when the required braking pressure is reached, the controller (2) is used for switching off the normally closed solenoid valve (1-1) without exhaust, so that the pressure is prevented from being too low due to transitional exhaust of the main regulating valve (3-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111232718.XA CN113859203B (en) | 2021-10-22 | 2021-10-22 | Brake pressure control device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111232718.XA CN113859203B (en) | 2021-10-22 | 2021-10-22 | Brake pressure control device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113859203A CN113859203A (en) | 2021-12-31 |
| CN113859203B true CN113859203B (en) | 2023-12-12 |
Family
ID=78997124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111232718.XA Active CN113859203B (en) | 2021-10-22 | 2021-10-22 | Brake pressure control device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113859203B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010125875A (en) * | 2008-11-25 | 2010-06-10 | Nabtesco Corp | Brake control device |
| CN201882108U (en) * | 2010-12-03 | 2011-06-29 | 中国铁道科学研究院机车车辆研究所 | Braking control device for railway vehicle braking system |
| CN106080650A (en) * | 2016-08-23 | 2016-11-09 | 上海册帆工业设备有限公司 | A kind of gas brak control unit used for rail vehicle |
| CN109501832A (en) * | 2018-11-01 | 2019-03-22 | 眉山中车制动科技股份有限公司 | A kind of rail wagon brake system being able to achieve bogie empty and load pressure controlling |
| CN111016954A (en) * | 2019-12-26 | 2020-04-17 | 中车株洲电力机车有限公司 | Remote release control device for brake cylinder of railway vehicle |
-
2021
- 2021-10-22 CN CN202111232718.XA patent/CN113859203B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010125875A (en) * | 2008-11-25 | 2010-06-10 | Nabtesco Corp | Brake control device |
| CN201882108U (en) * | 2010-12-03 | 2011-06-29 | 中国铁道科学研究院机车车辆研究所 | Braking control device for railway vehicle braking system |
| CN106080650A (en) * | 2016-08-23 | 2016-11-09 | 上海册帆工业设备有限公司 | A kind of gas brak control unit used for rail vehicle |
| CN109501832A (en) * | 2018-11-01 | 2019-03-22 | 眉山中车制动科技股份有限公司 | A kind of rail wagon brake system being able to achieve bogie empty and load pressure controlling |
| CN111016954A (en) * | 2019-12-26 | 2020-04-17 | 中车株洲电力机车有限公司 | Remote release control device for brake cylinder of railway vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113859203A (en) | 2021-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201002603Y (en) | Braking controller for railway vehicle | |
| CN105383473A (en) | Air brake valve for locomotive | |
| WO2022105649A1 (en) | Virtual track train and method for controlling pressure of brake cylinder thereof, braking system and method therefor | |
| CN107914730A (en) | A kind of locomotive and its standby braking equipment | |
| CN113859203B (en) | Brake pressure control device and method | |
| CN201842110U (en) | Small grouped diesel multiple unit brake system | |
| CN205149845U (en) | Machine vehicle air brake valve | |
| CN106870945B (en) | Natural gas pressure regulating skid-mounted device with multistage safety protection function | |
| RU2693770C1 (en) | Train braking cylinder pressure control system and railway train | |
| CN114572270B (en) | Axle control type brake control system and rail transit vehicle | |
| CN201914239U (en) | Emergency valve with common acceleration braking function | |
| CN215522887U (en) | Intelligent gas pressure regulating system | |
| CN201124829Y (en) | Four-channel ABS system for 6 x 4 vehicle type | |
| CN113184008A (en) | Backup brake control system and locomotive | |
| CN203856589U (en) | Shuttle bus and exhaust braking system thereof | |
| CN209617121U (en) | A kind of novel heavy duty motor vehicle braking system | |
| CN210554754U (en) | Emergency braking system for vehicle and vehicle | |
| CN202294140U (en) | Follow-up bridge airbag inflating and deflating system and three-axis vehicle using same | |
| CN206914316U (en) | Integrated form quick release valve provided with electromagnetic valve assembly | |
| CN217177523U (en) | Active air supply electromagnetic valve with reversing function | |
| CN205186134U (en) | Novel main regulator valve | |
| CN214837439U (en) | Pressure and speed regulating complete machine control system of ultrasonic welding machine | |
| CN217455946U (en) | Remote control brake integrated valve plate module for railway vehicle | |
| CN113844490B (en) | Air backup braking system, braking method and rail transit vehicle | |
| GB2615845A (en) | Vehicle brake control system, vehicle and train |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |