CN114802167A - Traction locomotive brake system, brake detection method and vehicle - Google Patents
Traction locomotive brake system, brake detection method and vehicle Download PDFInfo
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- CN114802167A CN114802167A CN202210542503.6A CN202210542503A CN114802167A CN 114802167 A CN114802167 A CN 114802167A CN 202210542503 A CN202210542503 A CN 202210542503A CN 114802167 A CN114802167 A CN 114802167A
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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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/228—Devices for monitoring or checking brake systems; Signal devices for railway vehicles
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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
- B60T13/24—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 the fluid being gaseous
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a traction locomotive braking system, a braking detection method and a vehicle, and relates to the technical field of vehicle control. The application discloses brake equipment brakes the wheel through brake cylinder drive brake mechanism, sets up on brake cylinder's piston rod and draws pressure sensor in order to detect the pulling force value that brake cylinder acted on brake mechanism. After the processing device acquires the tension value of the tension pressure sensor, the brake force value representing the force of the wheel on the brake mechanism is determined according to the tension value, then the brake force value is sent to the display device to be displayed, the brake working condition can be provided for a driver when the brake is performed, and therefore the driving safety is improved.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to a traction locomotive braking system, a braking detection method and a vehicle.
Background
In the current construction of traffic tunnels, most of the tunnel construction adopts a shield machine for tunneling, and then segment assembly is carried out to complete the tunnel. During construction, a backup sleeve device dragged by an electric locomotive or a diesel locomotive is indispensable and is used for completing transportation of lining segments, mortar, muck, grease foam and other various materials in a tunnel. At present, a manual brake system is adopted by a traction locomotive, the working condition of the brake system is judged by the proficiency and experience of a locomotive driver, and the potential safety hazard is high.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a traction locomotive braking system, a braking detection method and a vehicle, which can detect and display the braking force value applied to the wheels of the traction locomotive and improve the driving safety.
In one aspect, an embodiment of the present invention provides a traction locomotive braking system, including a processing device, a braking device, and a display device, where the processing device is connected to the display device;
the brake device comprises a brake mechanism and a brake cylinder, the brake mechanism is arranged on two sides of a wheel, the brake cylinder is connected with the brake mechanism, and the brake cylinder is used for locking the wheel by controlling the brake mechanism to move;
a piston rod of the brake cylinder is provided with a tension and pressure sensor, the tension and pressure sensor is electrically connected with the processing device, and the tension and pressure sensor is used for detecting the tension value of the piston rod of the brake cylinder;
the processing device is used for determining a braking force value according to the tension value, wherein the braking force value is used for representing the force of the wheel on the braking mechanism;
the display device is used for displaying the brake force value.
According to some embodiments of the invention, the processing device comprises a signal amplifier and a processor, the pull pressure sensor is connected to the signal amplifier, the signal amplifier is connected to the processor, and the processor is connected to the display device.
According to some embodiments of the invention, the traction locomotive braking system further comprises a relay and a pneumatic valve, the processing device is connected with the relay, the relay is connected with the pneumatic valve, and the pneumatic valve is connected with the brake cylinder;
the processing device is also used for sending a control signal to the relay according to the braking force value and controlling the braking air cylinder through the pneumatic valve.
According to some embodiments of the invention, the processing device is further connected to a locomotive velometer;
the processing device is further configured to:
when the speed of the locomotive exceeds a preset speed, a control signal is sent to the relay to control the mechanism to lock wheels;
and when the braking force value is smaller than the preset braking force value during braking, generating and displaying alarm information.
According to some embodiments of the invention, the piston rod comprises a flange, an installation lug, bolts, a locking nut and a torque-stopping nut, a tension pressure sensor is arranged between the flange and the installation lug, a plurality of bolts sequentially penetrate through the flange and the tension pressure sensor and are respectively matched with the locking nut and the torque-stopping nut to fix the tension pressure sensor and the flange, an installation lug screw is arranged at the bottom of the installation lug, the installation lug screw is connected with the tension pressure sensor, holes corresponding to the number of the torque-stopping nuts are arranged at the bottom of the installation lug, rods of the torque-stopping nut are inserted into the holes, a shaft hole of the installation lug is used for connecting the brake mechanism, and the flange is used for connecting the brake cylinder.
According to some embodiments of the invention, the brake mechanism comprises a first left connecting rod, a first right connecting rod, a second left connecting rod, a second right connecting rod, a brake link, a left brake shoe and a right brake shoe;
the first end of the first left connecting rod and the first end of the second left connecting rod are respectively fixed on the vehicle body on the left side of the wheel through hinged parts;
the first end of the first right connecting rod and the first end of the second right connecting rod are fixed on the vehicle body on the right side of the wheel through hinged parts respectively;
two ends of the brake connecting rod are respectively connected with the left piston rod and the right piston rod;
the second end of the first left connecting rod is hinged to the second end of the second left connecting rod at an included angle, and the second end of the second left connecting rod is hinged between the left piston rod and the left brake cylinder;
the second end of the first right connecting rod is hinged to the second end of the second right connecting rod at an included angle, and the second end of the second right connecting rod is hinged between the right piston rod and the right brake cylinder;
and the first left connecting rod is connected with a left brake shoe, and the first right connecting rod is connected with a right brake shoe.
According to some embodiments of the invention, the processing device is further configured to:
acquiring a stress model of a braking mechanism during braking;
determining force arm parameters according to the stress model;
and determining a braking force value according to the tension value and the force arm parameter based on a static moment balance principle.
According to some embodiments of the invention, the braking force value is determined by the following formula:
wherein, F 1 Indicating brakeForce value of vehicle, F 2 Indicating the tension value detected by the left piston rod pull-up pressure sensor,/ 1 Indicates the distance l from the first end of the first left connecting rod to the joint of the first left connecting rod and the left brake shoe 2 Indicates the distance, l, from the first end of the first left connecting rod to the position where the second left connecting rod acts 3 Indicates the distance, l, from the first end of the second left connecting rod to the position where the first left connecting rod acts 4 Showing the distance from the first end on the second left connecting rod to the connection with the left piston rod.
In another aspect, an embodiment of the present invention further provides a brake detection method, which is applied to the braking system of the locomotive as described above, where the brake detection method includes the following steps:
acquiring a pulling force value from a pulling force sensor during braking;
acquiring a stress model of a braking mechanism during braking;
determining force arm parameters according to the stress model;
and determining a braking force value according to the tension value and the force arm parameter based on a static moment balance principle.
In another aspect, embodiments of the present invention further provide a vehicle including a traction locomotive braking system as described above.
The technical scheme of the invention at least has one of the following advantages or beneficial effects: the application discloses brake equipment brakes the wheel through brake cylinder drive brake mechanism, sets up on brake cylinder's piston rod and draws pressure sensor in order to detect the pulling force value that brake cylinder acted on brake mechanism. After the processing device acquires the tension value of the tension pressure sensor, the brake force value representing the force of the wheel on the brake mechanism is determined according to the tension value, then the brake force value is sent to the display device to be displayed, the brake working condition can be provided for a driver when the brake is performed, and therefore the driving safety is improved.
Drawings
FIG. 1 is a schematic illustration of a locomotive braking system provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a piston rod provided with a pull pressure sensor according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a braking mechanism provided by an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a braking mechanism provided in accordance with another embodiment of the present invention;
FIG. 5(a) is a schematic view of the force-bearing point of the braking mechanism provided by the embodiment of the invention;
FIG. 5(b) is a schematic diagram of the forces experienced by the braking mechanism provided by the embodiment of the present invention;
FIG. 5(c) is a schematic diagram of the force applied to the first left connecting rod according to the embodiment of the present invention;
fig. 5(d) is a schematic diagram of the acting force applied to the second left connecting rod according to the embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are first, second, etc. described, they are only used for distinguishing technical features, but they are not interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
The embodiment of the invention provides a traction locomotive braking system, and referring to fig. 1, the traction locomotive braking system comprises a processing device, a braking device and a display device, wherein the processing device is connected with the display device. The brake device comprises a brake mechanism and a brake cylinder, the brake mechanism is arranged on two sides of the wheel, the brake cylinder is connected with the brake mechanism, and a driver can drive the brake mechanism by changing the gas pressure in the brake cylinder so as to lock the wheel. Be provided with on brake cylinder's the piston rod and draw pressure sensor, draw pressure sensor and processing apparatus electric connection, draw pressure sensor and be used for detecting the pulling force value of brake cylinder's piston rod, the pulling force value of brake cylinder effect on the brake mechanism promptly, the pulling force value that draws pressure sensor to detect sends processing apparatus in real time, and processing apparatus confirms the brake force value that is used for the sign wheel to receive the power of brake mechanism according to the pulling force value, then sends the brake force value to display device and shows.
According to some embodiments of the present invention, the display device may be a touch screen, a mobile phone, a tablet, a personal computer, or the like, and the terminal may be implemented without specific limitation to the display device as long as the display device can interact with the processing device and display the braking force value.
According to some embodiments of the present invention, referring to fig. 1, the processing device includes a signal amplifier and a processor, the pressure sensor is connected to the signal amplifier, the signal amplifier is connected to the processor, and the processor is connected to the display device.
In particular, the signal amplifier may have multiple inputs, such as four inputs or eight inputs. In this embodiment, the internal combustion engine is exemplified by an internal combustion engine having eight rail wheels, the eight wheels are respectively and correspondingly provided with eight braking devices, a tension pressure sensor in each braking device is connected to eight signal amplifiers, and a tension value signal is amplified by the signal amplifier and then sent to the processing device for further processing.
According to some embodiments of the present invention, referring to fig. 1, the braking system of the traction locomotive according to the embodiments of the present invention further includes a relay and a pneumatic valve, wherein the processing device is connected to the relay, the relay is connected to the pneumatic valve, and the pneumatic valve is connected to the brake cylinder. The processing device is also used for sending a control signal to the relay according to the braking force value and controlling the braking cylinder through the pneumatic valve. In the embodiment of the invention, the relay and the pneumatic valve are arranged between the processing device and the brake cylinder, so that the processing device can control the brake cylinder. The processing device generates a control signal and sends the control signal to the relay, the relay converts the control signal into a control current for controlling the pneumatic valve, and the pneumatic valve compresses air in the brake cylinder after being opened, so that the brake mechanism is driven, and automatic braking is realized.
According to some embodiments of the invention, the processing apparatus implemented by the invention further performs the steps of:
when the speed of the locomotive exceeds the preset speed, a control signal is sent to a relay to control a brake mechanism to lock wheels;
and when the braking force value is smaller than the preset braking force value during braking, generating and displaying alarm information.
In this embodiment, the processing device is connected to the locomotive speedometer, and the speed of the locomotive cannot be too fast during tunnel construction, so that the processing device obtains the speed of the locomotive in real time, and when the speed of the locomotive exceeds a preset speed, the processing device sends control information to control the brake mechanism to brake, so as to realize automatic deceleration and ensure construction safety.
In this embodiment, be provided with contact sensor on the brake shelves of locomotive, contact sensor is connected with processing apparatus, when contact sensor detected the signal, indicates that the driver has the brake intention, and whether processing apparatus detects the brake force value this moment and is less than preset brake force value, if brake force value is less than preset brake force value, indicates that brake apparatus's brake dynamics is not enough, and processing apparatus generates alarm information and sends and show to display device to remind the driver to maintain brake apparatus.
In this embodiment, be provided with contact sensor on the parking shelves of locomotive, contact sensor is connected with processing apparatus, and when contact sensor detected the signal, showed that the driver has the parking intention, processing apparatus detected the brake force value of this moment and whether be 0, if brake force value is 0, processing apparatus sent automatic parking instruction, prevented to take place the swift current car incident.
According to some embodiments of the present invention, referring to fig. 2, the piston rod includes a flange 240, a mounting lug 210, a bolt 250, a lock nut 260 and a torque-stopping nut 220, a tension pressure sensor 230 is disposed between the flange and the mounting lug, a plurality of bolts sequentially pass through the flange and the tension pressure sensor and respectively cooperate with the lock nut and the torque-stopping nut to fix the tension pressure sensor and the flange, a mounting lug screw 270 is disposed at the bottom of the mounting lug, the mounting lug screw is connected with the tension pressure sensor, a number of holes corresponding to the torque-stopping nuts are disposed at the bottom of the mounting lug, a rod of each torque-stopping nut is correspondingly inserted into one hole, a shaft hole of the mounting lug is used for connecting a brake mechanism, and the flange is used for connecting a brake cylinder. The piston rod shown in fig. 2 may be provided with eight bolts, four lock nuts and four torque-stopping nuts corresponding to the eight bolts, and four apertures corresponding to the four torque-stopping nuts and provided at the bottoms of the mounting lugs.
According to some embodiments of the present invention, referring to FIG. 3, the brake mechanism includes a first left connecting rod 310, a first right connecting rod 330, a second left connecting rod 390, a second right connecting rod 350, a brake link 370, a left brake shoe 311, and a right brake shoe 320. The first end of the first left connecting rod and the first end of the second left connecting rod are fixed on the vehicle body on the left side of the wheel 310 through hinged parts respectively, and the first end of the first right connecting rod and the first end of the second right connecting rod are fixed on the vehicle body on the right side of the wheel through hinged parts respectively. Two ends of the brake connecting rod are respectively connected with the left piston rod and the right piston rod. The second end of the first left connecting rod is hinged to the second end of the second left connecting rod at an included angle, and the second end of the second left connecting rod is hinged between the left piston rod and the left brake cylinder 380. The second end of the first right connecting rod is hinged at an included angle to the second end of the second right connecting rod, and the second end of the second right connecting rod is hinged between the right piston rod and the right brake cylinder 340. The first left connecting rod is connected with a left brake shoe, and the first right connecting rod is connected with a right brake shoe. At least one of the left or right piston rods is provided with a pull pressure sensor 230.
In another embodiment of the present invention, an alternative brake mechanism structure is provided, and referring to FIG. 4, the brake mechanism includes a left connecting rod 450, a right connecting rod 430, a connecting rod 440, a left brake shoe 460 and a right brake shoe 420. The first end of the left connecting rod is fixed on the vehicle body on the left side of the wheel 310 through a hinged component, the first end of the right connecting rod is connected with a piston rod on the brake cylinder 410, a pull pressure sensor 230 is arranged on the piston rod, and the brake cylinder is fixed on the vehicle body on the right side of the wheel. The two ends of the connecting rod are respectively hinged with the second end of the left connecting rod and the second end of the right connecting rod. The left connecting rod is connected with a left brake shoe, and the right connecting rod is connected with a right brake shoe.
According to some embodiments of the invention, the processing device determines the braking force value by:
acquiring a stress model of a braking mechanism during braking;
determining force arm parameters according to the stress model;
and determining a braking force value according to the tension value and the force arm parameter based on a static moment balance principle.
Specifically, taking the analysis of the left force of the braking mechanism as shown in fig. 3 as an example, referring to fig. 5(a), the left force point of the braking mechanism includes the connection point O of the first left connecting rod and the hinge component 1 A second left connecting rod and a connecting point O of the hinged part 2 The first left connecting rod and the left brake shoe are connected through a connecting point A, a second left connecting rod acting point B is received on the first left connecting rod, and a first left connecting rod acting point C is received on the second left connecting rod. Referring to FIG. 5(b), the braking mechanism receives external force including O 1 And O 2 Thrust F from wall surface 3 And F 4 Thrust F from the wheel 1 And a thrust force F from the brake cylinder 2 . Referring to fig. 5(c), the force received for the first left connecting rod includes F 4 、F 1 And a thrust F from the second left connecting rod 5 . Referring to fig. 5(d), the force received for the second left connecting rod includes F 3 、F 2 And a thrust F from the first left connecting rod 6 Wherein F is 5 And F 6 Acting as reaction force. The thrust F2 of the self-braking cylinder is the tension value detected by the tension-pressure sensor, and the thrust F1 of the wheel and the force of the wheel subjected to the braking mechanism are mutually reaction forces, namelyThe magnitude of F1 is the brake force value.
Under the stable state of braking, according to the static moment balance principle, the following can be obtained:
F 5 ×I 2 ＝F 1 ×I 1 ；
F 2 ×I 4 ＝F 6 ×I 3 ；
since F5 and F6 are equal in size, the braking force value is calculated by the formula:
wherein, F 1 Indicating the braking force value, F 2 Indicating the tension value detected by the left piston rod pull-up pressure sensor,/ 1 Indicates the distance l from the first end of the first left connecting rod to the joint of the first left connecting rod and the left brake shoe 2 Indicates the distance, l, from the first end of the first left connecting rod to the position where the second left connecting rod acts 3 Indicates the distance, l, from the first end of the second left connecting rod to the position where the first left connecting rod acts 4 Showing the distance from the first end on the second left connecting rod to the connection with the left piston rod.
In this embodiment, the processing device determines the arm of force parameter based on the stress model of the braking mechanism, and then determines and displays the braking force value according to the detected pulling force value of the braking cylinder and the corresponding arm of force parameter, so that the driver can determine the force applied to the wheels, thereby determining the braking condition of the locomotive. Aiming at the brake mechanisms with different structures, a standard brake force value can be provided for a driver as a reference through the detection of the tension sensor on the brake cylinder and the calculation of the processing device provided by the embodiment of the invention.
The embodiment of the invention also provides a brake detection method which is applied to the traction locomotive brake system of the previous embodiment, and the brake detection method of the embodiment of the invention comprises the following steps:
s1, acquiring a pulling force value from a pulling force sensor during braking;
s2, acquiring a stress model of the braking mechanism during braking;
s3, determining arm force parameters according to the stress model;
and S4, determining the braking force value according to the tension value and the arm parameter based on the static moment balance principle.
The embodiment of the invention also provides a vehicle which comprises the traction locomotive braking system of the previous embodiment.
It is understood that the contents of the above-mentioned embodiment of the braking system for a lead locomotive are all applied to the embodiment of the present vehicle, and the functions implemented by the embodiment of the present vehicle are the same as those of the above-mentioned embodiment of the braking system for a lead locomotive, and the beneficial effects achieved by the embodiment of the braking system for a lead locomotive are also the same as those achieved by the above-mentioned embodiment of the braking system for a lead locomotive.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The traction locomotive braking system is characterized by comprising a processing device, a braking device and a display device, wherein the processing device is connected with the display device;
the brake device comprises a brake mechanism and a brake cylinder, the brake mechanism is arranged on two sides of a wheel, the brake cylinder is connected with the brake mechanism, and the brake cylinder is used for locking the wheel by controlling the brake mechanism to move;
a piston rod of the brake cylinder is provided with a tension and pressure sensor, the tension and pressure sensor is electrically connected with the processing device, and the tension and pressure sensor is used for detecting the tension value of the piston rod of the brake cylinder;
the processing device is used for determining a braking force value according to the tension value, wherein the braking force value is used for representing the force of the wheel on the braking mechanism;
the display device is used for displaying the brake force value.
2. The locomotive braking system of claim 1, wherein the processing device comprises a signal amplifier and a processor, the pull pressure sensor is coupled to the signal amplifier, the signal amplifier is coupled to the processor, and the processor is coupled to the display device.
3. The traction-locomotive braking system of claim 1, further comprising a relay and a pneumatic valve, wherein the processing device is coupled to the relay, the relay is coupled to the pneumatic valve, and the pneumatic valve is coupled to the brake cylinder;
the processing device is also used for sending a control signal to the relay according to the braking force value and controlling the braking air cylinder through the pneumatic valve.
4. The locomotive braking system of claim 3, wherein the processing device is further connected to a locomotive tachometer;
the processing device is further configured to:
when the speed of the locomotive exceeds a preset speed, sending a control signal to the relay to control the brake mechanism to lock the wheels;
and when the braking force value is smaller than the preset braking force value during braking, generating and displaying alarm information.
5. The traction locomotive braking system according to claim 1, wherein the piston rod comprises a flange, a mounting lug, a bolt, a lock nut and a torque-stopping nut, a tension pressure sensor is arranged between the flange and the mounting lug, a plurality of bolts sequentially penetrate through the flange and the tension pressure sensor and are respectively matched with the lock nut and the torque-stopping nut to fix the tension pressure sensor and the flange, a mounting lug screw is arranged at the bottom of the mounting lug and is connected with the tension pressure sensor, holes corresponding to the number of the torque-stopping nuts are formed in the bottom of the mounting lug, rods of the torque-stopping nuts are inserted into the holes, a shaft hole of the mounting lug is used for connecting the braking mechanism, and the flange is used for connecting the brake cylinder.
6. The traction-locomotive braking system of claim 1, wherein the braking mechanism comprises a first left connecting rod, a first right connecting rod, a second left connecting rod, a second right connecting rod, a brake link, a left brake shoe, and a right brake shoe;
the first end of the first left connecting rod and the first end of the second left connecting rod are respectively fixed on the vehicle body on the left side of the wheel through hinged parts;
the first end of the first right connecting rod and the first end of the second right connecting rod are fixed on the vehicle body on the right side of the wheel through hinged parts respectively;
two ends of the brake connecting rod are respectively connected with the left piston rod and the right piston rod;
the second end of the first left connecting rod is hinged to the second end of the second left connecting rod at an included angle, and the second end of the second left connecting rod is hinged between the left piston rod and the left brake cylinder;
the second end of the first right connecting rod is hinged to the second end of the second right connecting rod at an included angle, and the second end of the second right connecting rod is hinged between the right piston rod and the right brake cylinder;
and the first left connecting rod is connected with a left brake shoe, and the first right connecting rod is connected with a right brake shoe.
7. The locomotive braking system of claim 1, wherein the processing device is further configured to:
acquiring a stress model of a braking mechanism during braking;
determining force arm parameters according to the stress model;
and determining a braking force value according to the tension value and the force arm parameter based on a static moment balance principle.
8. The locomotive braking system of claim 6, wherein the braking force value is determined by the formula:
wherein, F 1 Indicating the braking force value, F 2 Indicating the tension value detected by the left piston rod pull-up pressure sensor,/ 1 Indicates the distance l from the first end of the first left connecting rod to the joint of the first left connecting rod and the left brake shoe 2 Indicates the distance, l, from the first end of the first left connecting rod to the position where the second left connecting rod acts 3 Indicates the distance, l, from the first end of the second left connecting rod to the position where the first left connecting rod acts 4 The distance from the first end of the second left connecting rod to the joint with the left piston rod is shown.
9. A brake detection method applied to the locomotive braking system of claim 1, the brake detection method comprising the steps of:
acquiring a pulling force value from a pulling force sensor during braking;
acquiring a stress model of a braking mechanism during braking;
determining force arm parameters according to the stress model;
and determining a braking force value according to the tension value and the force arm parameter based on a static moment balance principle.
10. A vehicle comprising a traction locomotive braking system as claimed in any one of claims 1 to 8.
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| CN202210542503.6A CN114802167B (en) | 2022-05-18 | 2022-05-18 | Traction locomotive braking system, braking detection method and vehicle |
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| CN114368378A (en) * | 2022-01-11 | 2022-04-19 | 中车大同电力机车有限公司 | Locomotive brake monitoring device and method |
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|---|---|---|---|---|
| CN1068078A (en) * | 1991-06-29 | 1993-01-20 | 陆秀成 | Automobile braking system with car detect in real time, read out instrument |
| CN108891392A (en) * | 2018-07-19 | 2018-11-27 | 栗红允 | A kind of emergency braking control system preventing skid |
| CN113715635A (en) * | 2021-09-03 | 2021-11-30 | 中铁工程装备集团隧道设备制造有限公司 | Traction locomotive and traction locomotive ramp auxiliary starting control method |
| CN114368378A (en) * | 2022-01-11 | 2022-04-19 | 中车大同电力机车有限公司 | Locomotive brake monitoring device and method |
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| CN114802167B (en) | 2023-05-30 |
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