CN116394899A - Brake system, vehicle and brake control method - Google Patents

Brake system, vehicle and brake control method Download PDF

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Publication number
CN116394899A
CN116394899A CN202310484298.7A CN202310484298A CN116394899A CN 116394899 A CN116394899 A CN 116394899A CN 202310484298 A CN202310484298 A CN 202310484298A CN 116394899 A CN116394899 A CN 116394899A
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CN
China
Prior art keywords
air
dryer
regulating valve
pressure regulating
air inlet
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.)
Pending
Application number
CN202310484298.7A
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Chinese (zh)
Inventor
卢环宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Sany Medium Lifting Machinery Co Ltd
Original Assignee
Hunan Sany Medium Lifting Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hunan Sany Medium Lifting Machinery Co Ltd filed Critical Hunan Sany Medium Lifting Machinery Co Ltd
Priority to CN202310484298.7A priority Critical patent/CN116394899A/en
Publication of CN116394899A publication Critical patent/CN116394899A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • B60T17/02—Arrangements of pumps or compressors, or control devices therefor
    • 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
    • B60T17/06—Applications or arrangements of reservoirs
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

The invention relates to the technical field of vehicles and provides a braking system, a vehicle and a braking control method. When the continuous braking occurs due to poor driving working conditions, the second air compressor and the first air compressor supply air for the air storage cylinder together, so that the air consumption requirement is met; when the driving working condition is better, the second air compressor is closed, and the first air compressor supplies air for the air storage cylinder, so that the energy consumption is effectively reduced.

Description

Brake system, vehicle and brake control method
Technical Field
The invention relates to the technical field of vehicles, in particular to a braking system, a vehicle and a braking control method.
Background
In the prior art, for a vehicle with air brakes and more axles, for example, an air brake vehicle with 9 axles or 10 axles, because the vehicle body is long, the air demand is large in the working conditions of turning around and the like, and the air compressor of the engine cannot meet the air demand, so that the conditions of long air charging time or less continuous stepping on the brakes and the like are caused, and the driving safety is not facilitated.
Disclosure of Invention
The invention provides a braking system, a vehicle and a braking control method, which are used for solving the defect that in the prior art, for a pneumatic braking vehicle with a large number of axles, an air compressor of an engine cannot meet the air demand.
The present invention provides a brake system comprising:
a braking device for controlling braking of the vehicle;
the air outlet of the air storage cylinder is connected with the braking device;
the first air compressor is connected with the air inlet of the air storage cylinder;
the second air compressor is connected with the air inlet of the air storage cylinder;
a first detecting element for detecting the pressure of the air cylinder;
the control module is in communication connection with the first detection element and the second air compressor, and the control module controls the second air compressor to start according to the detection signal of the first detection element, wherein:
the control module is configured to control the second air compressor to start when the first detection element detects that the pressure of the air storage cylinder is smaller than or equal to a preset pressure value, so that the second air compressor and the first air compressor supply air for the air storage cylinder.
According to the present invention, there is provided a brake system further comprising:
the first dryer is used for drying the gas exhausted by the first air compressor, a drying air inlet of the first dryer is connected with an air outlet of the first air compressor, and a drying air outlet of the first dryer is connected with an air inlet of the air storage cylinder;
the second dryer is used for drying the gas exhausted by the second air compressor, a drying air inlet of the second dryer is connected with an air outlet of the second air compressor, and a drying air outlet of the second dryer is connected with an air inlet of the air storage cylinder.
According to the braking system provided by the invention, the braking system further comprises a pressure regulating valve, wherein the drying air outlet of the first dryer and the drying air outlet of the second dryer are both connected with the air inlet end of the pressure regulating valve, the pressure regulating valve is used for regulating the communication state of the drying air inlet of the first dryer and the air outlet of the first dryer, and the pressure regulating valve is used for regulating the communication state of the drying air inlet of the second dryer and the air outlet of the second dryer, wherein:
when the air inlet pressure value of the pressure regulating valve is larger than or equal to the set pressure value of the pressure regulating valve, the drying air inlet of the first dryer is communicated with the air outlet of the first dryer, and the drying air inlet of the second dryer is communicated with the air outlet of the second dryer;
when the air inlet pressure value of the pressure regulating valve is smaller than the set pressure value of the pressure regulating valve, the drying air inlet of the first dryer is disconnected with the air outlet of the first dryer, and the drying air inlet of the second dryer is disconnected with the air outlet of the second dryer;
according to the present invention, there is provided a brake system further comprising:
the drying air outlet of the first dryer is connected with the air inlet end of the first pressure regulating valve, and the first pressure regulating valve is used for regulating the communication state of the drying air inlet of the first dryer and the air outlet of the first dryer, wherein when the air inlet pressure value of the first pressure regulating valve is greater than or equal to the set pressure value of the first pressure regulating valve, the drying air inlet of the first dryer is communicated with the air outlet of the first dryer; when the air inlet pressure value of the first pressure regulating valve is smaller than the set pressure value of the first pressure regulating valve, the drying air inlet of the first dryer is disconnected with the air outlet of the first dryer;
the second pressure regulating valve is used for regulating the communication state of the drying air inlet of the second dryer and the air outlet of the second dryer, wherein when the air inlet pressure value of the second pressure regulating valve is greater than or equal to the set pressure value of the second pressure regulating valve, the drying air inlet of the second dryer is communicated with the air outlet of the second dryer; and when the air inlet pressure value of the second pressure regulating valve is smaller than the set pressure value of the second pressure regulating valve, the drying air inlet of the second dryer is disconnected with the air outlet of the second dryer.
According to the braking system provided by the invention, the first air outlet valve is arranged in the first dryer, and when the air inlet pressure value of the pressure regulating valve is greater than or equal to the set pressure value of the pressure regulating valve, the valve plate of the first air outlet valve moves to enable the drying air inlet of the first dryer to be communicated with the air outlet of the first dryer; when the air inlet pressure value of the pressure regulating valve is smaller than the set pressure value of the pressure regulating valve, the first exhaust valve cuts off the drying air inlet of the first dryer and the air outlet of the first dryer;
a second exhaust valve is arranged in the second dryer, and when the air inlet pressure value of the pressure regulating valve is greater than or equal to the set pressure value of the pressure regulating valve, the valve plate of the second exhaust valve moves to enable the drying air inlet of the second dryer to be communicated with the air outlet of the second dryer; and when the air inlet pressure value of the pressure regulating valve is smaller than the set pressure value of the pressure regulating valve, the second exhaust valve cuts off the drying air inlet of the second dryer and the air outlet of the second dryer.
According to the present invention, there is provided a brake system further comprising:
the second detection element is used for detecting the air outlet pressure value of the pressure regulating valve, the second detection element is in communication connection with the control module, and the control module controls the second air compressor according to the detection signal of the second detection element, wherein:
the control module is configured to control the second air compressor to stop when the second detection element detects that the air outlet pressure value of the pressure regulating valve is greater than zero.
According to the present invention, there is provided a brake system further comprising:
the second detection element is used for detecting the air outlet pressure value of the second pressure regulating valve, the second detection element is in communication connection with the control module, and the control module controls the second air compressor according to the detection signal of the second detection element, wherein:
the control module is configured to control the second air compressor to stop when the second detection element detects that the outlet pressure value of the second pressure regulating valve is greater than zero.
According to the present invention, there is provided a brake system, the pressure regulating valve including:
the valve body is provided with an air inlet end and an air outlet end;
the valve core is used for sealing the air outlet end;
the valve core is connected with the elastic component, and when the pressure of the air inlet end is larger than the elastic force of the elastic component, the elastic component is compressed and drives the valve core to move, and the air inlet end is communicated with the air outlet end to enable the pressure regulating valve to be conducted.
According to the present invention, there is provided a brake system further comprising:
the two ports of the first one-way valve are respectively connected with the drying air outlet of the first dryer and the air inlet of the air storage cylinder, and the conducting direction of the first one-way valve is the direction of the drying air outlet of the first dryer towards the air inlet of the air storage cylinder;
the two ports of the second one-way valve are respectively connected with the drying air outlet of the second dryer and the air inlet of the air storage cylinder, and the conduction direction of the second one-way valve is the direction of the drying air outlet of the second dryer towards the air inlet of the air storage cylinder.
According to the braking system provided by the invention, a first exhaust cavity and a first piston rod positioned in the first exhaust cavity are arranged in the first dryer, the first piston rod is connected with a valve plate of the first exhaust valve, the first piston rod divides the first exhaust cavity into a first rodless cavity and a first rod cavity, a drying air inlet of the first dryer is communicated with the first rod cavity, the first rodless cavity is communicated with an air outlet end of the pressure regulating valve, and when the air inlet pressure of the pressure regulating valve is greater than or equal to the set pressure of the pressure regulating valve, the first piston rod drives the valve plate of the first exhaust valve to move so that the first rod cavity is communicated with an air outlet of the first dryer;
the drying air inlet of the second dryer is communicated with the second rod cavity, the second rod cavity is communicated with the air outlet end of the pressure regulating valve, when the air inlet pressure of the pressure regulating valve is greater than or equal to the set pressure of the pressure regulating valve, the pressure regulating valve is communicated, and the second piston rod drives the valve plate of the second exhaust valve to move so that the second rod cavity is communicated with the air outlet of the second dryer.
The invention also provides a vehicle comprising a brake system as claimed in any one of the preceding claims.
The invention also provides a braking control method, based on the vehicle, comprising the following steps:
acquiring the pressure of the air cylinder;
if the pressure of the air storage cylinder is smaller than or equal to a preset pressure value, controlling a second air compressor to start, so that the second air compressor and the first air compressor supply air for the air storage cylinder together;
and if the pressure of the air storage cylinder is larger than the preset pressure value, controlling the second air compressor to stop, so that the first air compressor supplies air for the air storage cylinder independently.
According to the braking control method provided by the invention, the method further comprises the following steps:
obtaining the air outlet pressure value of the pressure regulating valve or the second pressure regulating valve;
and if the air outlet pressure value of the pressure regulating valve or the second pressure regulating valve is larger than zero, controlling the second air compressor to stop.
The invention provides a braking system, a vehicle and a braking control method, wherein the braking system comprises a braking device, an air storage cylinder, a first air compressor, a second air compressor, a first detection element and a control module, the braking device is used for controlling the braking of the vehicle, and an air outlet of the air storage cylinder is connected with the braking device to supply air for the braking device; the first air compressor and the second air compressor are connected with an air inlet of the air storage cylinder to supply air for the air storage cylinder; the first detection element is used for detecting the pressure of the air reservoir so as to be capable of detecting the pressure of the braking system; the control module is respectively in communication connection with the first detection element and the second air compressor, and controls the second air compressor to start according to the detection signal of the first detection element, and when the detection signal of the first detection element is that the pressure of the air storage cylinder is smaller than or equal to a preset pressure value, the control module controls the second air compressor to start so that the second air compressor and the first air compressor supply air for the air storage cylinder together, and therefore the air consumption requirement is met.
The first detection element can detect the pressure of the braking system in real time, and when continuous braking occurs due to poor driving working conditions, the first detection element can detect that the pressure of the braking system is reduced to be lower than a preset pressure value, and the control module controls the second air compressor to start at the moment, so that the second air compressor and the first air compressor supply air for the air storage cylinder together, and the air consumption requirement is met; when the driving working condition is good, the pressure of the braking system is kept at a preset pressure value, at the moment, the second air compressor is in a closed state, and only the first air compressor is used for supplying air for the air storage cylinder, so that the energy consumption can be effectively reduced.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a brake system provided by a first alternative embodiment of the present invention;
FIG. 2 is a schematic structural view of a brake system provided by a second alternative embodiment of the present invention;
fig. 3 is a diagram showing a connection relationship between a dryer and a pressure regulating valve according to the present invention.
Reference numerals:
1. a braking device; 2. an air cylinder; 3. a first air compressor;
4. a second air compressor; 5. a first dryer; 6. a second dryer;
7. a pressure regulating valve; 8. a first one-way valve; 9. a second one-way valve;
10. a control module; 11. a first detection element; 12. a second detection element;
13. a first pressure regulating valve; 14. a second pressure regulating valve; 51. a drying air inlet;
52. a drying air outlet; 53. an exhaust port; 54. a filter screen;
55. a drying tank; 56. a valve plate; 57. a piston rod;
58. a rodless cavity; 59. an elastic member; 71. a valve core; 72. and an elastic component.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The brake system, the vehicle, and the brake control method of the present invention are described below with reference to fig. 1 to 3.
As shown in fig. 1, the braking system provided by the invention may include a braking device 1, an air cylinder 2, a first air compressor 3, a second air compressor 4, a first detection element 11 and a control module 10.
The brake device 1 can be used for controlling the braking of a vehicle, wherein the brake device 1 can be a wheel brake.
The air outlet of the air reservoir 2 can be connected with the braking device 1 to supply air for the braking device 1; the first air compressor 3 and the second air compressor 4 can be connected with an air inlet of the air storage cylinder 2 to supply air for the air storage cylinder 2.
The first detection element 11 may be used to detect the pressure of the air reservoir 2 to be able to detect the pressure of the brake system; the control module 10 may be in communication connection with the first detecting element 11 and the second air compressor 4, respectively, and the control module 10 may control the second air compressor 4 to start according to the detecting signal of the first detecting element 11, so that the second air compressor 4 and the first air compressor 3 supply air for the air reservoir 2 together, thereby supplying air for the braking device 1.
Specifically, the control module 10 is configured to control the second air compressor 4 to start when the first detection element 11 detects that the pressure of the air receiver 2 is less than or equal to the preset pressure value, that is, when the detection signal of the first detection element 11 is that the pressure of the air receiver 2 is less than or equal to the preset pressure value, so that the second air compressor 4 and the first air compressor 3 supply air for the air receiver 2 together, so as to meet the air requirement.
Here, the first detection element 11 may be a first pressure sensor.
The arrangement is that the pressure of the braking system can be detected in real time through the first detection element 11, when continuous braking occurs due to poor driving working conditions, the first detection element 11 can detect that the pressure of the braking system is reduced and is lower than a preset pressure value, at the moment, the control module 10 controls the second air compressor 4 to start, so that the second air compressor 4 and the first air compressor 3 supply air for the air storage cylinder 2 together, and the air consumption requirement is met; when the driving working condition is good, the pressure of the braking system is kept at a preset pressure value, at the moment, the second air compressor 4 is in a closed state, and only the first air compressor 3 is used for supplying air for the air storage cylinder 2, so that the energy consumption can be effectively reduced.
In this embodiment, the first air compressor 3 may be an air pressure of the engine, and the second air compressor 4 may be an external air compressor.
In an alternative embodiment of the invention, the braking system may comprise a first dryer 5 and a second dryer 6, the first dryer 5 may be used for drying the gas discharged from the first air compressor 3 and the second dryer 6 may be used for drying the gas discharged from the second air compressor 4. Therefore, the water content of compressed air in the two air compressors can be effectively absorbed, the whole brake pipeline can be cleaned and dried, and the problems of corrosion, cracking of rubber parts, grease decomposition, pipeline blockage and the like of a brake system caused by accumulated water and oil stains are effectively solved, and the service life of a brake element is prolonged.
Specifically, the drying air inlet 51 of the first dryer 5 may be connected to the air outlet of the first air compressor 3, and the drying air outlet 52 of the first dryer 5 may be connected to the air inlet of the air reservoir 2; the drying air inlet 51 of the second dryer 6 may be connected to the air outlet of the second air compressor 4, and the drying air outlet 52 of the second dryer 6 may be connected to the air inlet of the air reservoir 2.
In an alternative embodiment, the dryer may include a dryer cartridge, which may be provided with an air inlet and an air outlet, a circuit being provided within the dryer cartridge, the circuit being in communication with the air inlet, and a filter screen 54 being provided between the circuit and the air inlet to filter the compressed air; and the drying cylinder is internally provided with a drying tank 55, a drying agent is arranged in the drying tank 55, the loop is communicated with the air inlet end of the drying tank 55, and the air outlet is communicated with the air outlet end of the drying tank 55, so that compressed air can form dry air after being dried by the drying tank 55 and then enter the air storage cylinder 2 through the drying air outlet 52.
Here, the compressed air discharged from the first air compressor 3 and the second air compressor 4 is dried by the drying tank 55 of the first dryer 5 and the drying tank 55 of the second dryer 6, respectively, and then enters the air receiver 2.
In the first alternative embodiment of the present invention, the braking system may further include a pressure regulating valve 7, each of the dry air outlet 52 of the first dryer 5 and the dry air outlet 52 of the second dryer 6 may be connected to an air inlet end of the pressure regulating valve 7, and the pressure regulating valve 7 may be used to regulate a communication state of the dry air inlet 51 and the air outlet 53 of the first dryer 5, and the pressure regulating valve 7 may be used to regulate a communication state of the dry air inlet 51 and the air outlet 53 of the second dryer 6. In this way, the air inlet of the dryer can be communicated with the air outlet 53 through the pressure regulating valve 7, so that the compressed air of the air inlet of the dryer can be directly discharged to the atmosphere, and the unloading of the first air compressor 3 and the second air compressor 4 is realized.
When the intake pressure value of the pressure regulating valve 7 is greater than or equal to the set pressure value of the pressure regulating valve 7, the drying air inlet 51 of the first dryer 5 may be in communication with the air outlet 53 of the first dryer 5, and the drying air inlet 51 of the second dryer 6 may be in communication with the air outlet 53 of the second dryer 6. In this way, the compressed air of the first air compressor 3 can be discharged to the atmosphere from the air outlet 53 of the first dryer 5, and unloading of the first air compressor 3 can be achieved; the compressed air of the second air compressor 4 can be discharged into the atmosphere from the air outlet 53 of the second dryer 6, and unloading of the second air compressor 4 can be achieved.
When the intake pressure value of the pressure regulating valve 7 is smaller than the set pressure value of the pressure regulating valve 7, the dry intake port 51 of the first dryer 5 is disconnected from the exhaust port 53 of the first dryer 5, i.e., the dry intake port 51 of the first dryer 5 and the exhaust port 53 of the first dryer 5 are not conducted, and the dry intake port 51 of the second dryer 6 is disconnected from the exhaust port 53 of the second dryer 6, i.e., the dry intake port 51 of the second dryer 6 and the exhaust port 53 of the second dryer 6 are not conducted. In this way, the compressed air of the first air compressor 3 and the second air compressor 4 can be prevented from being discharged to the atmosphere.
In an alternative embodiment, a first exhaust valve may be disposed in the first dryer 5, wherein when the intake pressure value of the pressure regulating valve 7 is greater than or equal to the set pressure value of the pressure regulating valve 7, the valve plate 56 of the first exhaust valve moves and communicates the drying air inlet 51 of the first dryer 5 with the air outlet 53 of the first dryer 5; when the intake pressure value of the pressure regulating valve 7 is smaller than the set pressure value of the pressure regulating valve 7, the first exhaust valve cuts off the drying air intake port 51 of the first dryer 5 and the air exhaust port 53 of the first dryer 5, and the drying air intake port 51 of the first dryer 5 and the air exhaust port 53 of the first dryer 5 are not communicated.
A second exhaust valve may be disposed in the second dryer 6, wherein when the intake pressure value of the pressure regulating valve 7 is greater than or equal to the set pressure value of the pressure regulating valve 7, the valve plate 56 of the second exhaust valve moves and communicates the drying air inlet 51 of the second dryer 6 with the air outlet 53 of the second dryer 6; when the intake pressure value of the pressure regulating valve 7 is smaller than the set pressure value of the pressure regulating valve 7, the second exhaust valve cuts off the drying air intake port 51 of the second dryer 6 and the exhaust port 53 of the second dryer 6, and the drying air intake port 51 of the second dryer 6 are not communicated.
In an alternative embodiment, as shown in fig. 3, the dryer may be provided with an exhaust chamber and a piston rod 57, the piston rod 57 may be located in the exhaust chamber, and a valve plate 56 of the exhaust valve is connected to the piston rod 57. The piston rod 57 may divide the exhaust chamber into a rodless chamber 58 and a rod chamber, wherein the rodless chamber 58 may be in communication with the outlet end of the pressure regulating valve 7 and the air inlet of the dryer may be in communication with the rod chamber.
Specifically, a first exhaust chamber and a first piston rod may be provided in the first dryer 5, the first piston rod may be located in the first exhaust chamber, and the valve plate 56 of the first exhaust valve is connected to the first piston rod. The first piston rod may divide the first exhaust chamber into a first rodless chamber and a first rod chamber, wherein the first rodless chamber may be in communication with the air outlet end of the pressure regulating valve 7, and the drying air inlet 51 of the first dryer 5 may be in communication with the first rod chamber.
When the air inlet pressure value of the pressure regulating valve 7 is greater than or equal to the set pressure value of the pressure regulating valve 7, the pressure regulating valve 7 is conducted, dry compressed air enters the first rodless cavity, so that the pressure in the first rodless cavity is increased, the first piston rod is pushed to move, the first piston rod drives the valve plate 56 of the first exhaust valve to move, so that the first rod-shaped cavity can be communicated with the exhaust port 53 of the first dryer 5, and the drying air inlet 51 of the first dryer 5 is communicated with the exhaust port 53 of the first dryer 5, so that unloading of the first air compressor 3 is realized.
A second exhaust chamber and a second piston rod may be provided in the second dryer 6, the second piston rod may be located in the second exhaust chamber, and a valve plate 56 of the second exhaust valve is connected to the second piston rod. The second piston rod may divide the second exhaust chamber into a second rodless chamber and a second rod chamber, wherein the second rodless chamber may be in communication with the exhaust end of the pressure regulating valve 7, and the drying air inlet 51 of the second dryer 6 may be in communication with the second rod chamber.
When the air inlet pressure value of the pressure regulating valve 7 is greater than or equal to the set pressure value of the pressure regulating valve 7, the pressure regulating valve 7 is conducted, dry compressed air enters the second rodless cavity, so that the pressure in the second rodless cavity is increased, the second piston rod is pushed to move, the second piston rod drives the valve plate 56 of the second exhaust valve to move, so that the second rod cavity can be communicated with the exhaust port 53 of the second dryer 6, and the drying air inlet 51 of the second dryer 6 is communicated with the exhaust port 53 of the second dryer 6, so that unloading of the second air compressor 4 is realized.
In the embodiment, an elastic member 59 is disposed at the air outlet 53, the elastic member 59 is connected to the valve plate 56, and when the intake pressure value of the pressure regulating valve 7 is greater than or equal to the set pressure value of the pressure regulating valve 7, the piston rod drives the valve plate 56 of the air outlet valve to move, the elastic member 59 deforms; when the pressure exerted by the piston rod is removed, the elastic member 59 resumes its shape, driving the valve plate 56 to return to the initial position to intercept the inlet and outlet ports 53 of the dryer. Here, the elastic member 59 may be a spring.
In this embodiment, the first rodless chamber of the first dryer 5 and the second rodless chamber of the second dryer 6 may be in communication. In this way, it is facilitated that the pressure regulating valve 7 simultaneously controls the first exhaust valve of the first dryer 5 and the second exhaust valve of the second dryer 6.
In a second alternative embodiment of the present invention, as shown in fig. 2, the braking system may further include a first pressure regulating valve 13, and a dry air outlet 52 of the first dryer 5 may be connected to an air inlet end of the first pressure regulating valve 13, and the first pressure regulating valve 13 may be used to regulate a communication state between a dry air inlet 51 of the first dryer 5 and an air outlet 53 of the first dryer 5. In this way, the air inlet and the air outlet 53 of the first dryer 5 can be communicated by the first pressure regulating valve 13, so that the compressed air of the air inlet of the first dryer 5 can be directly discharged to the atmosphere, thereby realizing unloading of the first air compressor 3.
When the intake pressure value of the first pressure regulating valve 13 is greater than or equal to the set pressure value of the first pressure regulating valve 13, the drying air inlet 51 of the first dryer 5 may be communicated with the air outlet 53 of the first dryer 5, so that the compressed air of the first air compressor 3 may be discharged into the atmosphere from the air outlet 53 of the first dryer 5, thereby realizing unloading of the first air compressor 3; when the intake pressure value of the first pressure regulating valve 13 is smaller than the set pressure value of the first pressure regulating valve 13, the drying air inlet 51 of the first dryer 5 is disconnected from the air outlet 53 of the first dryer 5, i.e. the drying air inlet 51 of the first dryer 5 and the air outlet 53 of the first dryer 5 are not conducted, so as to avoid the compressed air of the first air compressor 3 from being discharged into the atmosphere.
The braking system may further include a second pressure regulating valve 14, and a dry air outlet 52 of the second dryer 6 may be connected to an air inlet end of the second pressure regulating valve 14, and the second pressure regulating valve 14 may be used to regulate a communication state of a dry air inlet 51 of the second dryer 6 with an air outlet 53 of the second dryer 6. In this way, the second pressure regulating valve 14 can communicate the air inlet of the second dryer 6 with the air outlet 53, so that the compressed air in the air inlet of the second dryer 6 can be directly discharged to the atmosphere, thereby realizing unloading of the second air compressor 4.
When the intake pressure value of the second pressure regulating valve 14 is greater than or equal to the set pressure value of the second pressure regulating valve 14, the drying air inlet 51 of the second dryer 6 may be communicated with the air outlet 53 of the second dryer 6, so that the compressed air of the second air compressor 4 may be discharged into the atmosphere from the air outlet of the second dryer 6, thereby realizing unloading of the second air compressor 4; when the intake pressure value of the second pressure regulating valve 14 is smaller than the set pressure value of the second pressure regulating valve 14, the drying air inlet 51 of the second dryer 6 is disconnected from the air outlet 53 of the second dryer 6, i.e. the drying air inlet 51 of the second dryer 6 and the air outlet 53 of the second dryer 6 are not conducted, so as to avoid the compressed air of the second air compressor 4 from being discharged into the atmosphere.
In an alternative embodiment of the present invention, the pressure regulating valve 7 may include a valve body provided with an inlet end and an outlet end, a valve core 71 for closing the outlet end, and an elastic assembly 72, the elastic assembly 72 may be located in the valve body, and the valve core 71 may be connected with the elastic assembly 72.
Here, when the pressure of the air inlet end is greater than the elastic force of the elastic member 72, the elastic member 72 is compressed and drives the valve core 71 to move, so that the air inlet end and the air outlet end are communicated, and the pressure regulating valve 7 is conducted. In this way, the compressed gas after drying can be introduced into the first rodless chamber and the second rodless chamber so as to push the first piston rod and the second piston rod to operate, thereby realizing communication between the drying air inlet 51 of the first dryer 5 and the air outlet 53 of the first dryer 5 and communication between the drying air inlet 51 of the second dryer 6 and the air outlet 53 of the second dryer 6.
The set pressure value of the pressure regulating valve 7 may be an elastic force value set by the elastic member 72.
In this embodiment, the elastic component 72 may include a diaphragm assembly and a spring, the spring is connected to the diaphragm assembly, the valve core 71 is connected to the diaphragm assembly, and when the dried compressed air enters the valve body of the pressure regulating valve 7 and the pressure reaches the set elastic force of the spring, the diaphragm assembly drives the valve core 71 to be away from the air outlet end and compress the spring, so that the air outlet end is communicated with the air inlet end.
The structure and principle of the first pressure regulating valve 13 and the second pressure regulating valve 14 in the second alternative embodiment are the same as those of the pressure regulating valve 7 described above.
In an alternative embodiment of the invention, the brake system may further comprise a second detection element 12, the second detection element 12 may be communicatively connected to the control module 10, and the control module 10 may control the second air compressor 4 according to a detection signal of the second detection element 12.
In a first alternative embodiment, the second detecting element 12 may be configured to detect the outlet pressure value of the pressure regulating valve 7, and the control module 10 is configured to control the second air compressor 4 to stop when the second detecting element 12 detects that the outlet pressure value of the pressure regulating valve 7 is greater than zero, that is, the detection signal of the second detecting element 12 is that the outlet pressure value of the pressure regulating valve 7 is greater than zero. In this way, the control module 10 can control the second air compressor 4 to stop when the pressure of the brake system exceeds the set value, in which case the brake device 1 is supplied with air only by the first air compressor 3.
Here, the second sensing element 12 may be used to sense the pressure of the first rodless chamber and the second rodless chamber.
In a second alternative embodiment, the second detecting element 12 may be configured to detect the outlet pressure value of the second pressure regulating valve 14, and the control module 10 is configured to control the second air compressor 4 to stop when the second detecting element 12 detects that the outlet pressure value of the second pressure regulating valve 14 is greater than zero, that is, the detection signal of the second detecting element 12 is that the outlet pressure value of the second pressure regulating valve 14 is greater than zero.
Here, the second detecting element 12 may be used to detect the pressure of the second rodless chamber.
Since the highest pressure of the braking system is set by the spring of the pressure regulating valve 7 or the second pressure regulating valve 14, and the pressure of the braking system has a certain fluctuation range, the second detection element 12 is used for collecting the air outlet pressure value of the pressure regulating valve 7 or the second pressure regulating valve 14 to control the closing of the second air compressor 4, so that accurate control can be realized, and the situation that the second air compressor 4 is cut off in advance when the set pressure is not reached, and the situation that the second air compressor 4 does not stop working after the set pressure is reached can not occur.
In alternative embodiments, the pressure regulating valve 7 may be of unitary construction with the first dryer 5, or the first pressure regulating valve 13 may be of unitary construction with the first dryer 5, and the second pressure regulating valve 14 may be of unitary construction with the second dryer 6. Thus, the occupied space of the brake system is reduced, the connecting pipelines are reduced, and the arrangement is convenient.
In this embodiment, the second detecting element 12 may be a second pressure sensor.
In an alternative embodiment of the present invention, the braking system may further include a first check valve 8, two ports of the first check valve 8 may be connected to the dry air outlet 52 of the first dryer 5 and the air inlet of the air reservoir 2, respectively, and the conducting direction of the first check valve 8 may be the direction in which the dry air outlet 52 of the first dryer 5 faces the air inlet of the air reservoir 2. In this way, the second air compressor 4 can be prevented from being deflated from the first dryer 5 and the first air compressor 3.
The braking system may further include a second check valve 9, two ports of the second check valve 9 may be connected to the dry air outlet 52 of the second dryer 6 and the air inlet of the air reservoir 2, respectively, and the conducting direction of the second check valve 9 may be a direction in which the dry air outlet 52 of the second dryer 6 faces the air inlet of the air reservoir 2. In this way, the first air compressor 3 can be prevented from being deflated from the second dryer 6 and the first air compressor 3.
The following describes a vehicle provided by the present invention, and the vehicle described below and the brake system described above may be referred to correspondingly to each other.
The invention provides a vehicle which can comprise the braking system according to any one of the embodiments.
The beneficial effects achieved by the vehicle provided by the invention are consistent with those achieved by the braking system provided by the invention, and will not be described in detail herein.
The vehicle may be an excavator, a pump truck, a crane, a trailer, or other engineering vehicles.
The braking control method provided by the invention is described below, and the vehicle described below and the vehicle described above can be referred to correspondingly to each other.
The braking control method provided by the invention can be based on the vehicle described in the above embodiment, and includes:
acquiring the pressure of the air cylinder 2;
if the pressure of the air reservoir 2 is smaller than or equal to a preset pressure value, the second air compressor 4 is controlled to start, so that the second air compressor 4 and the first air compressor 3 supply air for the air reservoir 2 together;
if the pressure of the air reservoir 2 is larger than the preset pressure value, the second air compressor 4 is controlled to stop, so that the first air compressor 3 supplies air for the air reservoir 2 independently.
The beneficial effects achieved by the braking control method provided by the invention are consistent with those achieved by the braking system provided by the invention, and are not repeated here.
In an alternative embodiment of the present invention, the brake control method may further include:
obtaining the air outlet pressure value of the pressure regulating valve 7 or the second pressure regulating valve 14;
if the air outlet pressure value of the pressure regulating valve or the second pressure regulating valve 14 is greater than zero, the second air compressor 4 is controlled to stop.
Thus, the second air compressor 4 can be precisely controlled, and the situation that the second air compressor 4 is cut off in advance when the set pressure is not reached can not occur, and the second air compressor 4 does not stop working after the set pressure is reached.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A braking system, comprising:
a braking device for controlling braking of the vehicle;
the air outlet of the air storage cylinder is connected with the braking device;
the first air compressor is connected with the air inlet of the air storage cylinder;
the second air compressor is connected with the air inlet of the air storage cylinder;
a first detecting element for detecting a pressure of the air cylinder;
the control module is in communication connection with the first detection element and the second air compressor, and the control module controls the second air compressor to start according to the detection signal of the first detection element, wherein:
the control module is configured to control the second air compressor to start when the first detection element detects that the pressure of the air storage cylinder is smaller than or equal to a preset pressure value, so that the second air compressor and the first air compressor supply air for the air storage cylinder.
2. The brake system of claim 1, further comprising:
the first dryer is used for drying the gas exhausted by the first air compressor, a drying air inlet of the first dryer is connected with an air outlet of the first air compressor, and a drying air outlet of the first dryer is connected with an air inlet of the air storage cylinder;
the second dryer is used for drying the gas exhausted by the second air compressor, a drying air inlet of the second dryer is connected with an air outlet of the second air compressor, and a drying air outlet of the second dryer is connected with an air inlet of the air storage cylinder.
3. The brake system of claim 2, further comprising a pressure regulating valve, the dry air outlet of the first dryer and the dry air outlet of the second dryer each being connected to an air inlet end of the pressure regulating valve, the pressure regulating valve being configured to regulate the communication between the dry air inlet of the first dryer and the air outlet of the first dryer, the pressure regulating valve being configured to regulate the communication between the dry air inlet of the second dryer and the air outlet of the second dryer, wherein:
when the air inlet pressure value of the pressure regulating valve is larger than or equal to the set pressure value of the pressure regulating valve, the drying air inlet of the first dryer is communicated with the air outlet of the first dryer, and the drying air inlet of the second dryer is communicated with the air outlet of the second dryer;
and when the air inlet pressure value of the pressure regulating valve is smaller than the set pressure value of the pressure regulating valve, the drying air inlet of the first dryer is disconnected with the air outlet of the first dryer, and the drying air inlet of the second dryer is disconnected with the air outlet of the second dryer.
4. The braking system of claim 2, further comprising:
the drying air outlet of the first dryer is connected with the air inlet end of the first pressure regulating valve, and the first pressure regulating valve is used for regulating the communication state of the drying air inlet of the first dryer and the air outlet of the first dryer, wherein when the air inlet pressure value of the first pressure regulating valve is greater than or equal to the set pressure value of the first pressure regulating valve, the drying air inlet of the first dryer is communicated with the air outlet of the first dryer; when the air inlet pressure value of the first pressure regulating valve is smaller than the set pressure value of the first pressure regulating valve, the drying air inlet of the first dryer is disconnected with the air outlet of the first dryer;
the second pressure regulating valve is used for regulating the communication state of the drying air inlet of the second dryer and the air outlet of the second dryer, wherein when the air inlet pressure value of the second pressure regulating valve is greater than or equal to the set pressure value of the second pressure regulating valve, the drying air inlet of the second dryer is communicated with the air outlet of the second dryer; and when the air inlet pressure value of the second pressure regulating valve is smaller than the set pressure value of the second pressure regulating valve, the drying air inlet of the second dryer is disconnected with the air outlet of the second dryer.
5. A braking system according to claim 3 further comprising:
the second detection element is used for detecting the air outlet pressure value of the pressure regulating valve, the second detection element is in communication connection with the control module, and the control module controls the second air compressor according to the detection signal of the second detection element, wherein:
the control module is configured to control the second air compressor to stop when the second detection element detects that the air outlet pressure value of the pressure regulating valve is greater than zero.
6. The brake system of claim 4, further comprising:
the second detection element is used for detecting the air outlet pressure value of the second pressure regulating valve, the second detection element is in communication connection with the control module, and the control module controls the second air compressor according to the detection signal of the second detection element, wherein:
the control module is configured to control the second air compressor to stop when the second detection element detects that the outlet pressure value of the second pressure regulating valve is greater than zero.
7. The braking system of claim 2, further comprising:
the two ports of the first one-way valve are respectively connected with the drying air outlet of the first dryer and the air inlet of the air storage cylinder, and the conducting direction of the first one-way valve is the direction of the drying air outlet of the first dryer towards the air inlet of the air storage cylinder;
the two ports of the second one-way valve are respectively connected with the drying air outlet of the second dryer and the air inlet of the air storage cylinder, and the conduction direction of the second one-way valve is the direction of the drying air outlet of the second dryer towards the air inlet of the air storage cylinder.
8. A vehicle comprising a brake system according to any one of claims 1-7.
9. A brake control method, characterized by comprising, based on the vehicle of claim 8:
acquiring the pressure of the air cylinder;
if the pressure of the air storage cylinder is smaller than or equal to a preset pressure value, controlling a second air compressor to start, so that the second air compressor and the first air compressor supply air for the air storage cylinder together;
and if the pressure of the air storage cylinder is larger than the preset pressure value, controlling the second air compressor to stop, so that the first air compressor supplies air for the air storage cylinder independently.
10. The brake control method according to claim 9, characterized by further comprising:
obtaining the air outlet pressure value of the pressure regulating valve or the second pressure regulating valve;
and if the air outlet pressure value of the pressure regulating valve or the second pressure regulating valve is larger than zero, controlling the second air compressor to stop.
CN202310484298.7A 2023-04-28 2023-04-28 Brake system, vehicle and brake control method Pending CN116394899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310484298.7A CN116394899A (en) 2023-04-28 2023-04-28 Brake system, vehicle and brake control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310484298.7A CN116394899A (en) 2023-04-28 2023-04-28 Brake system, vehicle and brake control method

Publications (1)

Publication Number Publication Date
CN116394899A true CN116394899A (en) 2023-07-07

Family

ID=87007604

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310484298.7A Pending CN116394899A (en) 2023-04-28 2023-04-28 Brake system, vehicle and brake control method

Country Status (1)

Country Link
CN (1) CN116394899A (en)

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