CN113147709A - Electric control braking device applied to locomotive braking system - Google Patents
Electric control braking device applied to locomotive braking system Download PDFInfo
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- CN113147709A CN113147709A CN202110001944.0A CN202110001944A CN113147709A CN 113147709 A CN113147709 A CN 113147709A CN 202110001944 A CN202110001944 A CN 202110001944A CN 113147709 A CN113147709 A CN 113147709A
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- brake
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- pressure
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- 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
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention provides an electric control brake device applied to a locomotive brake system, which comprises a plurality of electromagnetic valves arranged in an electric control motor, wherein the electromagnetic valves are controlled by electric control signals sent by an automatic control vehicle-mounted host arranged on a locomotive and then control the on-off of an air path of the electromagnetic valves; and a piston structure within the cylinder body having a plurality of layers of airtight brake chambers for staged control of brake pressure through the plurality of airtight brake chambers to generate different levels of brake pressure by different combinations of on and off of the solenoid valve. The electric control brake device is used for a computer automatic control system of a locomotive to control the pressure of a brake cylinder of the locomotive through electric signals, and the locomotive brake is automatically realized.
Description
Technical Field
The invention belongs to the field of locomotive braking, and particularly relates to an electric control braking device applied to a locomotive braking system.
Background
The JZ-7 type air brake is an air brake designed and manufactured by our country, and is widely applied to internal combustion and electric locomotives manufactured in our country. For internal combustion locomotives, in the field of station shunting locomotives in China, a JZ-7 type air brake is used for Dongfeng and eastern red locomotives which are widely used and direct current transmission type internal combustion locomotives which are widely used in steel plants and mines.
Along with the development of railway automation, the application of automatic control devices of locomotives is more and more extensive and advanced. How to convert the electric signal output by the computer into the air pressure for braking the locomotive in the automatic control process of the locomotive is an important subject of research in the field. In the automatic control of locomotive brake pressure, a great deal of pressure of a locomotive brake cylinder is required to be controlled through a locomotive individual brake valve and an acting valve, so that locomotive brake operation is realized. Particularly, in hump operation, because the train needs to be disassembled at hump, the brake hose can not be connected, and only the locomotive can be used for independent braking, the automatic control of the independent braking of the locomotive is realized, and the automatic control becomes one of the key technologies of the automatic control of the shunting locomotive.
At present, the shunting locomotive is mainly controlled by people, and because the control principle of the JZ-7 type air brake is mainly that a driver adjusts the position of a brake handle to control the air pressure, and an electric control interface is not available, an automatic control system is difficult to realize automatic control on the air brake, and the whole development of the automatic control of the shunting locomotive is hindered.
Disclosure of Invention
The invention provides an electric control brake device for controlling an air brake valve in a locomotive brake system, which enables a computer automatic control system applied to a locomotive to control the pressure of a locomotive brake cylinder through an electric signal and automatically realize locomotive braking.
The electrically controlled brake device includes: the electromagnetic valves are controlled by an electric control signal sent by an automatic control vehicle-mounted host machine arranged on the locomotive and then control the on-off of an air path; and
a piston structure within a cylinder having a plurality of airtight brake chambers for graduated control of brake pressure through the plurality of airtight brake chambers to generate different levels of brake pressure by different combinations of switching of the solenoid valve.
Preferably, automatically controlled arresting gear still includes the action valve tube socket and installs the three-way shuttle valve on the brake pipe way additional, when on-vehicle host computer automatic control, through the action valve tube socket with the three-way shuttle valve makes the solenoid valve action, the inside wind path that switches on total tuber pipe and corresponding airtight braking cavity of SLB arresting gear makes airtight braking cavity form brake pressure, and the braking wind pressure promotes three-way shuttle valve downstream, switches on the wind path between SLB arresting gear and the action valve to form locomotive brake jar wind pressure, finally be used in to the wheel to.
Preferably, the electrically controlled brake device further comprises an individual brake valve, for forming a brake air pressure on the individual brake valve according to the operation of the handle when the driver operates the brake handle to perform manual braking, and pushing the three-way shuttle valve to move upwards to conduct the air path between the individual brake valve and the acting valve, so as to form a locomotive brake cylinder air pressure, which finally acts on the wheel pair.
Preferably, the acting valve comprises a main air cylinder pipe, a brake cylinder pipe and an acting air cylinder pipe, the main air cylinder pipe is connected with a main air cylinder of the locomotive, and a pipeline provides an air source for the acting valve; the brake cylinder is connected with a locomotive brake cylinder through a pipe, and the locomotive brake cylinder is independently braked after the brake cylinder is inflated with air; the action air cylinder pipe is connected with an individual brake valve of the locomotive, and the individual brake valve realizes pressure regulation and control of a brake cylinder of the locomotive through the pipeline.
Preferably, in the manual braking process of a driver, the pressure of the acting air cylinder pipe is increased, the piston inside the acting valve is pushed to move upwards, an air path between the main air cylinder pipe and the brake cylinder pipe is opened, and the main air cylinder is enabled to charge air to the brake cylinder, so that braking is realized; when the wind pressure of the brake cylinder pipe is equal to that of the acting air cylinder pipe, the air charging wind path is closed, and the locomotive is subjected to pressure maintaining braking;
alleviate braking in-process at the driver, remove effect cylinder pipe wind pressure, the inside piston of effect valve falls naturally, the wind path and the atmosphere intercommunication of brake cylinder pipe realize that the brake cylinder pipeline is aired exhaust, and brake cylinder pressure is removed, and the locomotive is alleviated.
Through the device, the fine control of the electric signal to the braking wind pressure signal can be realized, thereby providing basic guarantee for the automatic control of the shunting locomotive.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 illustrates a schematic cross-sectional view of a service valve according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a service valve carrier and driver brake configuration according to an embodiment of the present invention;
FIG. 3 is a block diagram illustrating an internal principle of a braking apparatus according to an embodiment of the present invention;
FIG. 4 shows a circuit diagram of a braking device according to an embodiment of the invention;
FIG. 5 is a schematic diagram illustrating braking wind pressure output of an SLB braking device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a driver's manual braking wind pressure output according to an embodiment of the present invention.
Detailed Description
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 some, but not all, embodiments of the present invention. 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.
The invention utilizes the control principle of the air brake action valve, and the model of the air brake is JZ-7 by way of example. By additionally arranging a set of electric control device, a driver is assisted to control the acting air cylinder pipe, and the control of the pressure of the brake cylinder in the locomotive acting valve is realized.
Fig. 1 shows a basic operation principle of a service valve according to an embodiment of the present invention, and fig. 2 shows a service valve holder and a driver brake structure according to an embodiment of the present invention. The main air cylinder pipe 3 is connected with a main air cylinder of the locomotive, and the pipeline provides an air source for the acting valve; the brake cylinder pipe 12 is connected with a locomotive brake cylinder, and the locomotive brake cylinder can be independently braked after being inflated with air; the service cylinder pipe 14 is connected to a locomotive individual brake valve, and the individual brake valve can realize pressure regulation and control on a locomotive brake cylinder (namely, the brake cylinder pipe 12) through the pipeline. When a driver operates to need braking, the independent brake valve can be operated, so that the pressure of the acting air cylinder pipe 14 is increased, the piston inside the acting valve is pushed to move upwards, an air path between the main air cylinder pipe and the brake cylinder pipe is opened, and the main air cylinder is filled with air to the brake cylinder, so that braking is realized; when the wind pressure of the brake cylinder pipe is equal to the wind pressure acting on the air cylinder pipe 14, the air charging wind path is closed, and the locomotive is subjected to pressure maintaining braking; when a driver needs to relieve, the air pressure of the acting cylinder pipe 14 is removed, the piston inside the acting valve naturally falls down, the air path of the brake cylinder pipe 12 is communicated with the atmosphere, exhaust of the brake cylinder pipeline is achieved, the pressure of the brake cylinder is removed, and the locomotive is relieved.
The invention responds to an electric control signal sent by an automatic control vehicle-mounted host machine arranged on a locomotive to control an electric control braking device. The electric control motor is internally provided with a group of electromagnetic valves, and the on-off of the air path of the electric control motor is controlled by an electric signal. Different levels of brake pressure are generated through different combinations of on-off of the electromagnetic valves.
FIG. 3 is a block diagram illustrating an internal principle of a braking apparatus according to an embodiment of the present invention; fig. 4 shows a circuit diagram of a braking device according to an embodiment of the invention. As shown in figures 3 and 4, the piston structure within the brake cylinder is a multi-layer airtight brake chamber design, and the brake pressure is controlled in stages through the four airtight brake chambers by stacking the four pressure-bearing surfaces together. The pressure bearing surfaces of the four airtight brake chambers can form 16 different levels of pressure at most by means of coding combination. When in design, the brake pressure can be combined and graded by adjusting the area proportion of the four pressure bearing surfaces. For example, if the total wind pressure is 300kpa divided into 16 brake levels according to the design of the average distribution of each pressure-receiving surface, each brake level can ideally provide a pressure output of 20 kpa. Whether the air-tight braking chambers form the braking pressure or not is controlled by the on-off of the corresponding electromagnetic valve. The four solenoid valves respectively correspond to the four airtight chambers, and the brake pressure gauge is equally distributed as follows (ideal value), wherein √ represents that the solenoid valve is in a conducting state, and × "represents that the solenoid valve is in a disconnecting state:
TABLE 1 brake pressure distribution Table
The four control electromagnetic valves are controlled by an automatic control vehicle-mounted host, and after passing through an action valve tube seat and a three-way shuttle valve additionally arranged on a brake pipeline, the equipment structure and the wind pressure trend of the equipment in a braking state are shown in figure 5. When the vehicle-mounted host generates a braking control signal, the solenoid valve acts, and the air path of the main air pipe and the corresponding airtight braking chamber is communicated in the SLB braking device, so that the airtight braking chamber forms braking pressure. The braking wind pressure pushes the three-way shuttle valve to move downwards, and the wind path between the SLB braking device and the acting valve is conducted, so that the wind pressure of a locomotive brake cylinder is formed, and the wind pressure finally acts on the wheel pair. Fig. 6 shows the driver's manual braking wind pressure output, that is, when the driver performs manual braking, the brake handle is operated to form braking wind pressure on the individual brake valve, so as to push the three-way shuttle valve to move upwards, and the wind path between the individual brake valve and the acting valve is conducted, so that the locomotive brake cylinder wind pressure is formed, and finally the locomotive brake cylinder wind pressure acts on the wheel pair.
Therefore, the SLB brake device can realize the control of the pressure of the brake cylinder of the locomotive. Meanwhile, due to the existence of the three-way shuttle valve, the braking pressure formed by the SLB braking device and the braking pressure formed by the independent braking valve of a driver run in a complementary mode, and when the braking pressure of one party is high, the other party forms the final braking pressure to act on the braking cylinder, so that the whole system is guided safely.
According to the invention, the SLB electric control brake device is used for realizing the control of the independent brake of the locomotive brake cylinder, the brake grade division is fine, the control response is rapid, and the basic guarantee of single-machine brake is provided for the locomotive automatic control system.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. An electric control brake device applied to a locomotive brake system is characterized by comprising a plurality of electromagnetic valves, wherein the electromagnetic valves are arranged in an electric control motor;
the electromagnetic valve is controlled by an electric control signal sent by a vehicle-mounted host arranged on the locomotive to control the on-off of an air path of the electromagnetic valve;
a piston structure is further included in the brake device cylinder, the piston structure having a plurality of layers of airtight brake chambers for controlling brake pressure in stages through the plurality of airtight brake chambers in coordination with different combinations of on and off of the solenoid valve to generate different levels of brake pressure.
2. The electronically controlled brake device for a locomotive brake system according to claim 1,
automatically controlled arresting gear still includes action valve tube socket and three-way shuttle valve, three-way shuttle valve installs on the brake pipe way, and when on-vehicle host computer automatic control, through the action valve tube socket with three-way shuttle valve makes the solenoid valve action, the inside wind path that switches on total tuber pipe and corresponding airtight braking cavity of SLB arresting gear makes airtight braking cavity form brake pressure, and the braking wind pressure promotes three-way shuttle valve downstream, switches on the wind path between SLB arresting gear and the action valve to form locomotive brake jar wind pressure, the final action is on the wheel pair.
3. The electronically controlled brake device for a locomotive brake system according to claim 2,
the electric control brake device further comprises an independent brake valve, and the independent brake valve is used for forming brake air pressure on the independent brake valve according to the operation of the handle when a driver operates the brake handle to perform manual braking, pushing the three-way shuttle valve to move upwards and conduct the air path between the independent brake valve and the acting valve, so that the locomotive brake cylinder air pressure is formed, and finally, the locomotive brake cylinder air pressure acts on the wheel pair.
4. The electronically controlled brake apparatus for a locomotive brake system according to claim 3,
the action valve comprises a main air cylinder pipe, a brake cylinder pipe and an action air cylinder pipe, wherein the main air cylinder pipe is connected with a main air cylinder of the locomotive, and a pipeline provides an air source for the action valve; the brake cylinder pipe is connected with a locomotive brake cylinder, and the locomotive brake cylinder is independently braked after being charged with air; the action air cylinder pipe is connected with an individual brake valve of the locomotive, and the individual brake valve realizes pressure regulation and control of a brake cylinder of the locomotive through the pipeline.
5. The electronically controlled brake apparatus for a locomotive brake system according to claim 4,
during manual braking of a driver, the pressure of the acting air cylinder pipe is increased, the piston inside the acting valve is pushed to move upwards, an air path between the main air cylinder pipe and the brake cylinder pipe is opened, and the main air cylinder is enabled to charge air to the brake cylinder, so that braking is achieved; when the wind pressure of the brake cylinder pipe is equal to that of the acting air cylinder pipe, the air charging wind path is closed, and the locomotive is subjected to pressure maintaining braking;
alleviate braking in-process at the driver, remove effect cylinder pipe wind pressure, the inside piston of effect valve falls naturally, the wind path and the atmosphere intercommunication of brake cylinder pipe realize that the brake cylinder pipeline is aired exhaust, and brake cylinder pressure is removed, and the locomotive is alleviated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001944.0A CN113147709A (en) | 2021-01-04 | 2021-01-04 | Electric control braking device applied to locomotive braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001944.0A CN113147709A (en) | 2021-01-04 | 2021-01-04 | Electric control braking device applied to locomotive braking system |
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| CN113147709A true CN113147709A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110001944.0A Pending CN113147709A (en) | 2021-01-04 | 2021-01-04 | Electric control braking device applied to locomotive braking system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3913860A1 (en) * | 1989-04-27 | 1990-10-31 | Bosch Gmbh Robert | Pressure medium vehicle braking system with braking valve transmitter - delivers braking signal to evaluation unit where it is converted for control of switch magnet |
| CN207984870U (en) * | 2018-06-20 | 2018-10-19 | 南京舜美科技有限公司 | JZ-7 type air damper electronically controlled proportional valve closed loop stepless brake devices |
| CN109835319A (en) * | 2019-03-12 | 2019-06-04 | 中车资阳机车有限公司 | A kind of air system booster brake device |
| CN209079877U (en) * | 2018-10-30 | 2019-07-09 | 辽宁汉普科技有限公司 | A kind of diesel locomotive electropneumatic brake equipment |
| CN110422156A (en) * | 2019-08-27 | 2019-11-08 | 天津铁路信号有限责任公司 | Multistage manometer regulator and its application |
-
2021
- 2021-01-04 CN CN202110001944.0A patent/CN113147709A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3913860A1 (en) * | 1989-04-27 | 1990-10-31 | Bosch Gmbh Robert | Pressure medium vehicle braking system with braking valve transmitter - delivers braking signal to evaluation unit where it is converted for control of switch magnet |
| CN207984870U (en) * | 2018-06-20 | 2018-10-19 | 南京舜美科技有限公司 | JZ-7 type air damper electronically controlled proportional valve closed loop stepless brake devices |
| CN209079877U (en) * | 2018-10-30 | 2019-07-09 | 辽宁汉普科技有限公司 | A kind of diesel locomotive electropneumatic brake equipment |
| CN109835319A (en) * | 2019-03-12 | 2019-06-04 | 中车资阳机车有限公司 | A kind of air system booster brake device |
| CN110422156A (en) * | 2019-08-27 | 2019-11-08 | 天津铁路信号有限责任公司 | Multistage manometer regulator and its application |
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Application publication date: 20210723 |
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