CN111284466A - Electric control brake system and unmanned wide-body vehicle - Google Patents
Electric control brake system and unmanned wide-body vehicle Download PDFInfo
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- CN111284466A CN111284466A CN202010258314.7A CN202010258314A CN111284466A CN 111284466 A CN111284466 A CN 111284466A CN 202010258314 A CN202010258314 A CN 202010258314A CN 111284466 A CN111284466 A CN 111284466A
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- 238000005065 mining Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
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Abstract
The invention provides an electric control brake system and an unmanned wide-body vehicle, wherein the electric control brake system comprises a front electric proportional relay valve, a middle and rear electric proportional relay valve and a two-position three-way electromagnetic valve; the front electric proportional relay valve and the middle and rear electric proportional relay valves are communicated to the air storage cylinder and the front brake air chamber and are used for inflating corresponding air pressure to the corresponding brake air chamber through the air storage cylinder when receiving a brake current signal and releasing the air of the corresponding brake air chamber when receiving a release current signal; the two-position three-way electromagnetic valve is communicated to the air storage cylinder and the parking relay valve and used for controlling the parking relay valve to exhaust the parking air chamber when a parking instruction is received, and the parking relay valve is inflated through the air storage cylinder when a parking release instruction is received, so that the parking relay valve inflates the parking air chamber. The invention can realize the autonomous braking, parking and emergency braking of the unmanned wide-body vehicle, or receive the braking, parking and emergency braking control of a remote end.
Description
Technical Field
The invention relates to the field of unmanned wide-body vehicles, in particular to an electric control braking system and an unmanned wide-body vehicle.
Background
Aiming at the problems of low production operation efficiency, frequent safety accidents and the like of the current mining area, the mining area tends to use an unmanned wide-body vehicle for operation. An effective electric control autonomous braking scheme and an electric control autonomous parking scheme are lacked in the existing mining unmanned system.
Disclosure of Invention
In view of the above problems, the present invention provides an electric control brake system and an unmanned wide body vehicle to implement autonomous braking, parking and emergency braking of the unmanned wide body vehicle or to accept autonomous braking, parking and emergency braking control at a remote end.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electric control brake system comprises a front electric proportional relay valve, a middle and rear electric proportional relay valve and a two-position three-way electromagnetic valve;
the front electric proportional relay valve is communicated to the air storage cylinder and the front brake air chamber and is used for inflating the front brake air chamber by corresponding air pressure through the air storage cylinder when a brake current signal is received and releasing air of the front brake air chamber when a release current signal is received;
the middle and rear electric proportional relay valve is communicated to the air storage cylinder and the middle and rear brake air chambers and is used for inflating corresponding air pressure to the middle and rear brake air chambers through the air storage cylinder when a brake current signal is received and releasing air of the middle and rear brake air chambers when a release current signal is received;
the two-position three-way electromagnetic valve is communicated to the air storage cylinder and the parking relay valve and used for controlling the parking relay valve to exhaust the parking air chamber when a parking instruction is received, and the parking relay valve is inflated through the air storage cylinder when a parking release instruction is received, so that the parking relay valve inflates the parking air chamber.
Preferably, in the electronic control brake system, the front electro-proportional relay valve and the middle-rear electro-proportional relay valve are further connected to a brake foot valve to receive a control signal of the brake foot valve, and the air cylinders inflate the front brake air chamber and the middle-rear brake air chamber with air pressure corresponding to the control signal.
Preferably, the electric control braking system further comprises a vehicle control unit;
and the vehicle control unit is connected to the front electric proportional relay valve and the middle and rear electric proportional relay valves and is used for generating a braking current signal according to the current running speed and the target speed.
Preferably, in the electronic control brake system, the vehicle controller is further configured to send a brake current signal when it is determined that a difference between the current running speed and the target speed is greater than a preset value, and send a release current signal to the front electro-proportional relay valve and the middle-rear electro-proportional relay valve after the current running speed is equal to the target speed.
Preferably, in the electrically controlled brake system, a current value of the release current signal is zero.
Preferably, in the electric control brake system, the two-position three-way electromagnetic valve comprises an air inlet, an air outlet and an air outlet;
the air inlet is communicated to the air storage cylinder;
the air outlet is communicated to the parking relay valve.
Preferably, in the electronic control brake system, when the parking instruction is received, the air inlet is closed, the air outlet and the air outlet are opened, and the air outlet is communicated with the air outlet, so that the parking relay valve performs air exhaust of the parking air chamber.
Preferably, in the electronic control brake system, when the parking release instruction is received, the air outlet is closed, the air inlet and the air outlet are opened, and the air inlet is communicated with the air outlet, so that the air cylinder inflates the parking relay valve and the parking air chamber.
Preferably, in the electronic control brake system, the two-position three-way solenoid valve is further connected to a parking switch to receive a control signal of the parking switch to perform a parking operation or a parking release operation.
An unmanned wide-body vehicle comprises the electric control braking system.
The invention provides an electric control brake system, which comprises a front electric proportional relay valve, a middle and rear electric proportional relay valve and a two-position three-way electromagnetic valve, wherein the front electric proportional relay valve is connected with the middle and rear electric proportional relay valves; the front electric proportional relay valve is communicated to the air storage cylinder and the front brake air chamber and is used for inflating the front brake air chamber by corresponding air pressure through the air storage cylinder when a brake current signal is received and releasing air of the front brake air chamber when a release current signal is received; the middle and rear electric proportional relay valve is communicated to the air storage cylinder and the middle and rear brake air chambers and is used for inflating corresponding air pressure to the middle and rear brake air chambers through the air storage cylinder when a brake current signal is received and releasing air of the middle and rear brake air chambers when a release current signal is received; the two-position three-way electromagnetic valve is communicated to the air storage cylinder and the parking relay valve and used for controlling the parking relay valve to exhaust air in a parking air chamber when a parking instruction is received and inflating the parking relay valve through the air storage cylinder when a parking release instruction is received. According to the electric control brake system, the electric proportional relay valve and the two-position three-way electromagnetic valve are arranged in the mining vehicle, and the braking and parking operation of the mining vehicle can be carried out by means of electric control brake signals, so that the autonomous braking, parking and emergency braking of the unmanned wide body vehicle are realized, or the braking, parking and emergency braking control of a remote end is received.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. Like components are numbered similarly in the various figures.
Fig. 1 is a schematic structural diagram of an electronically controlled brake system provided in embodiment 1 of the present invention;
FIG. 2 is a schematic view of a current-air pressure characteristic curve provided in example 1 of the present invention;
fig. 3 is a schematic structural diagram of another electronically controlled brake system provided in embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of an electronically controlled brake system provided in embodiment 2 of the present invention;
fig. 5 is a schematic structural diagram of an electronically controlled brake system according to embodiment 3 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present invention, are only intended to indicate specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
Example 1
Fig. 1 is a schematic structural diagram of an electronically controlled brake system provided in embodiment 1 of the present invention.
The electronically controlled brake system 100 includes a front electro-proportional relay valve 110 communicated to the air reservoir 101 and the front brake chamber 102, a middle and rear electro-proportional relay valve 120 communicated to the air reservoir 101 and the middle and rear brake chambers 103, and a two-position three-way solenoid valve 130 communicated to the air reservoir 101 and the parking relay valve 104;
in the embodiment of the invention, the wide-body mining vehicle generally adopts the traditional pneumatic braking, and in order to realize the unmanned mode of the mining vehicle, namely the mining vehicle is beaten into the unmanned wide-body vehicle, the proportional relay valve can be added under the original manually-braked pneumatic braking system to realize the electric signal control. Specifically, in a conventional air brake system, a front axle service brake includes an air reservoir 101, a brake foot valve and a front brake chamber 102, when braking is performed, high-pressure air in the air reservoir 101 is input into the front brake chamber 102 at a certain ratio of pressure by triggering the foot valve, so that braking force is generated, and when braking is released, the high-pressure air in the front brake chamber 102 is released.
In the embodiment of the invention, a front electro-proportional relay valve 110 can be additionally arranged in the original pneumatic braking system, the front electro-proportional relay valve 110 is directly communicated with the air cylinder 101 and the front brake air chamber 102, and after receiving a braking instruction, high-pressure air in the air cylinder 101 can be input into the front brake air chamber 102, so that braking force can be generated. The braking command is generated by an upper controller of the unmanned wide-body vehicle, and specifically, is generally a current signal, and the front electro-proportional relay valve 110 can input air with corresponding air pressure to the front brake air chamber 102 according to the magnitude of the current value of the current signal after receiving the current signal. Wherein the current-to-air pressure characteristic of the front electro-proportional relay valve 110 may be as shown in figure 2. Fig. 2 is only one current-air pressure characteristic curve provided by the present application, and other current-air pressure characteristic curves may be further provided according to parameters such as a system current range of the unmanned wide-body vehicle, an air pressure upper limit of the front brake chamber 102, and the like, which are not limited herein. And, when the current value is lower than 375mA, the air pressure value output by the front electro-proportional relay valve 110 is zero, that is, the current signal with the current value lower than 375mA can be used as the release current signal for releasing the braking force.
The front electro-proportional relay valve 110 is used for inflating the front brake air chamber 102 by corresponding air pressure through the air cylinder 101 when receiving a brake current signal, and releasing the air of the front brake air chamber 102 when receiving a release current signal;
in the embodiment of the invention, a plurality of air reservoirs 101 can be simultaneously arranged in the unmanned wide-body vehicle, the air in the air reservoirs 101 is the air processed by an air compressor and has a certain air pressure, after the air reservoirs are connected to the front electro-proportional relay valve 110, the front electro-proportional relay valve 110 can input the air in the air reservoirs 101 to the front brake air chamber 102 through the communication control of the front brake air chamber 102, and the air pressure can also be controlled in the input process, and the upper limit of the air pressure is the air pressure value in the air reservoirs 101.
The middle-rear electric proportional relay valve 120 is used for inflating the middle-rear brake air chamber 103 by corresponding air pressure through the air cylinder 101 when receiving a brake current signal, and releasing the air of the middle-rear brake air chamber 103 when receiving a release current signal;
similarly, in a conventional pneumatic brake system, a mechanical relay valve is also provided between the middle and rear brake chambers 103 and the air reservoir 101, and the mechanical relay valve mainly functions to control the input of high-pressure air into the brake chambers at a certain pressure ratio and to accelerate the pneumatic action.
In the embodiment of the invention, the mechanical relay valve can be replaced by a middle-rear electric proportional relay valve 120, the middle-rear electric proportional relay valve 120 is directly communicated with the air cylinder 101 and the middle-rear brake air chamber 103, and after receiving a braking instruction, high-pressure air in the air cylinder 101 can be input into the middle-rear brake air chamber 103, so that braking force can be generated. The braking command is generated by an upper controller of the unmanned wide-body vehicle, and specifically may be a current signal, and the middle-rear electro-proportional relay valve 120 may input air of a corresponding air pressure to the middle-rear brake air chamber 103 according to a magnitude of a current value of the current signal after receiving the current signal. Wherein the current-to-air pressure characteristic of the middle and rear electro-proportional relay valve 120 may also be as shown in figure 2. When the current value is lower than 375mA, the air pressure value output by the middle and rear electric proportional relay valve 120 is zero, that is, the current signal with the current value lower than 375mA can be used as a release current signal for releasing the braking force of the middle and rear brake air chamber 103.
In the embodiment of the present invention, the front electro-proportional relay valve 110 and the middle and rear electro-proportional relay valves 120 may be connected to the same air reservoir 101 to transmit the air in the air reservoir 101 to the front brake chamber 102 and the middle and rear brake chambers 103, but in order to further improve the braking efficiency, two air reservoirs 101 may be provided in the unmanned wide-body vehicle to be respectively connected to the front electro-proportional relay valve 110 and the middle and rear electro-proportional relay valves 120. The front electro-proportional relay valve 110 and the middle-rear electro-proportional relay valve 120 may receive the brake current signals with the same current value at the same time to perform simultaneous braking control, or may receive the brake current signals with different current values to perform different braking modes according to different scenes, which is not limited herein.
The two-position three-way solenoid valve 130 is used for controlling the parking relay valve 104 to exhaust a parking air chamber when receiving a parking instruction, and inflating the parking relay valve 104 through the air cylinder 101 when receiving a parking release instruction, so that the parking relay valve 104 inflates the parking air chamber.
In the conventional pneumatic brake system, after a user triggers the parking hand valve during parking, the parking relay valve 104 is controlled to discharge the gas in the parking air chamber and then generate a parking force, and after the user triggers the parking hand valve during parking release, the parking relay valve 104 is controlled to charge the gas in the air reservoir 101 into the parking air chamber, so that the parking force is released.
In the embodiment of the invention, a two-position three-way electromagnetic valve 130 is additionally arranged between the air storage cylinder 101 and the parking air chamber, so that the aim of electrically controlling parking is fulfilled. The two-position three-way solenoid valve 130 may discharge gas in the parking air chamber when receiving a parking command or an emergency braking command, thereby generating a parking force.
In the embodiment of the invention, the mining vehicle is provided with the electric proportional relay valve and the two-position three-way electromagnetic valve, and the braking and parking operation of the mining vehicle can be carried out through an electric control means, so that the unmanned driving of the mining vehicle is realized, and the unmanned wide-body vehicle can carry out autonomous braking and parking or receive the braking control and parking control of a remote end.
Fig. 3 is a schematic structural diagram of another electronically controlled brake system provided in embodiment 1 of the present invention.
In the embodiment of the present invention, the front electro-proportional relay valve 110 and the middle and rear electro-proportional relay valves 120 are further connected to the foot valve 105 to receive a control signal of the foot valve 105, and inflate the front brake chamber 102 and the middle and rear brake chambers 103 with air pressure corresponding to the control signal through the air cylinder 101. That is, the mechanical brake foot valve 105 is retained in the unmanned vehicle, so that when the unmanned vehicle enters the manual driving mode, the driver can control the electro-proportional relay valve through the brake foot valve 105, and the brake foot valve 105 can generate a current value signal, for example, after the driver steps on the brake foot valve 105, the brake foot valve 105 can generate a current signal with a corresponding current value according to the stepping degree and send the current signal to the front electro-proportional relay valve 110 and the middle and rear electro-proportional relay valves 120, so as to control the electro-proportional relay valves to input brake gas into the brake chambers. In addition, the mechanical part of the relay valve can be reserved in the electric proportional relay valve, and in a manual driving mode, a driver controls the triggering of the brake foot valve 105 by stepping on a brake pedal to realize air pressure control on the electric proportional relay valve, so that the electric proportional relay valve is controlled to input brake air into a brake air chamber.
In the embodiment of the present invention, the two-position three-way solenoid valve 130 is further connected to the parking switch 106 to receive a control signal of the parking switch 106 for performing a parking operation or a parking release operation. That is, the unmanned vehicle also includes a mechanical parking switch 106, such as a parking hand valve, which can control the two-position three-way solenoid valve 130 to perform parking or parking release operations according to a current signal.
Example 2
Fig. 4 is a schematic structural diagram of an electronically controlled brake system provided in embodiment 2 of the present invention.
The electric control brake system 200 comprises a front electric proportional relay valve 210 communicated to an air cylinder and a front brake air chamber, a middle and rear electric proportional relay valve 220 communicated to the air cylinder and a middle and rear brake air chamber, and a two-position three-way electromagnetic valve 230 communicated to the air cylinder and a parking relay valve;
the front electro-proportional relay valve 210 is used for inflating the front brake air chamber by corresponding air pressure through the air reservoir when receiving a brake current signal, and releasing the air of the front brake air chamber when receiving a release current signal;
the middle and rear electric proportional relay valve 220 is used for inflating the middle and rear brake chambers with corresponding air pressure through the air storage cylinder when receiving a brake current signal, and releasing the air of the middle and rear brake chambers when receiving a release current signal;
the two-position three-way solenoid valve 230 is used for controlling the parking relay valve to exhaust a parking air chamber when receiving a parking instruction, and inflating the parking relay valve through an air reservoir when receiving a parking release instruction.
The electric control brake system 200 further includes a vehicle controller 240;
the vehicle controller 240 is connected to the front electro-proportional relay valve 210 and the middle-rear electro-proportional relay valve 220, and is configured to generate a braking current signal according to a current driving speed and a target speed.
In an embodiment of the present invention, the vehicle controller 240 is electrically connected to an upper controller of the unmanned wide body vehicle, and is electrically connected to the front electro-proportional relay valve 210 and the middle electro-proportional relay valve 220 to receive a target speed of the unmanned wide body vehicle sent by the upper controller, and detects a current driving speed of the unmanned wide body vehicle through a sensor, and determines whether a braking operation or a parking operation is currently performed according to the target speed and the driving speed, and when the braking operation is required, a corresponding current signal can be generated to the front electro-proportional relay valve 210 and the middle electro-proportional relay valve 220 to perform the braking operation. The vehicle controller 240 may be further connected to the two-position three-way solenoid valve 230, and may generate a current signal to the two-position three-way solenoid valve 230 to perform a parking operation when the parking operation is required.
The vehicle controller 240 is further configured to send a braking current signal when it is determined that the difference between the current running speed and the target speed is greater than the preset value, and send a release current signal to the front electro-proportional relay valve 210 and the middle-rear electro-proportional relay valve 220 after the current running speed is equal to the target speed.
In the embodiment of the present invention, the vehicle control unit 240 may further monitor the current driving speed and the target speed through a sensor, and after detecting that the current driving speed is equal to the target speed in the braking process, may immediately send a release current signal to the front electro-proportional relay valve 210 and the middle-rear electro-proportional relay valve 220 to release the braking operation, so as to avoid that the excessive braking affects the driving speed of the unmanned wide-body vehicle. Wherein the current value of the release current signal is zero.
Example 3
Fig. 5 is a schematic structural diagram of an electronically controlled brake system according to embodiment 3 of the present invention.
The electronically controlled brake system 300 includes a front electro-proportional relay valve 310 communicating with the air reservoir 301 and the front brake chamber 302, a middle and rear electro-proportional relay valve 320 communicating with the air reservoir 301 and the middle and rear brake chamber 303, and a two-position three-way solenoid valve 330 communicating with the air reservoir 301 and the parking relay valve 304;
the front electro-proportional relay valve 310 is used for charging the front brake air chamber 302 with corresponding air pressure through the air cylinder 301 when receiving a brake current signal, and releasing the air of the front brake air chamber 302 when receiving a release current signal;
the middle-rear electric proportional relay valve 320 is used for inflating the middle-rear brake air chamber 303 through the air storage cylinder 301 according to the corresponding air pressure when receiving a brake current signal, and releasing the air of the middle-rear brake air chamber 303 when receiving a release current signal;
the two-position three-way solenoid valve 330 is used for controlling the parking relay valve 304 to exhaust a parking air chamber when receiving a parking instruction, and inflating the parking relay valve 304 through the air reservoir 301 when receiving a parking release instruction.
Wherein, the two-position three-way electromagnetic valve 330 comprises an air inlet 331, an air outlet 332 and an air outlet 333;
the air inlet 331 is used for communicating with the air cylinder 301;
the air outlet 332 is adapted to communicate with the park relay valve 304.
When the parking command is received, the air inlet 331 is closed, the air outlet 333 and the air outlet 332 are opened, and the air outlet 333 and the air outlet 332 are communicated, so that the parking relay valve 304 performs parking air chamber exhaust.
When the parking release instruction is received, the air outlet 333 is closed, the air inlet 331 and the air outlet 332 are opened, and the air inlet 331 and the air outlet 332 are communicated, so that the air cylinder 301 inflates the parking relay valve 304 and the parking air chamber.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An electric control brake system is characterized by comprising a front electric proportional relay valve, a middle and rear electric proportional relay valve and a two-position three-way electromagnetic valve;
the front electric proportional relay valve is communicated to the air storage cylinder and the front brake air chamber and is used for inflating the front brake air chamber by corresponding air pressure through the air storage cylinder when a brake current signal is received and releasing air of the front brake air chamber when a release current signal is received;
the middle and rear electric proportional relay valve is communicated to the air storage cylinder and the middle and rear brake air chambers and is used for inflating corresponding air pressure to the middle and rear brake air chambers through the air storage cylinder when a brake current signal is received and releasing air of the middle and rear brake air chambers when a release current signal is received;
the two-position three-way electromagnetic valve is communicated to the air storage cylinder and the parking relay valve and used for controlling the parking relay valve to exhaust the parking air chamber when a parking instruction is received, and the parking relay valve is inflated through the air storage cylinder when a parking release instruction is received, so that the parking relay valve inflates the parking air chamber.
2. The electric brake system according to claim 1, wherein the front and middle rear electric proportional relay valves are further connected to a brake foot valve to receive a control signal of the brake foot valve and to charge the front and middle rear brake chambers with air pressure corresponding to the control signal through the air reservoir.
3. The electronically controlled braking system of claim 1, further comprising a vehicle control unit;
and the vehicle control unit is connected to the front electric proportional relay valve and the middle and rear electric proportional relay valves and is used for generating a braking current signal according to the current running speed and the target speed.
4. The electronically controlled brake system of claim 3, wherein the vehicle control unit is further configured to send a braking current signal when the difference between the current travel speed and the target speed is determined to be greater than the preset value, and to send a release current signal to the front electro-proportional relay valve and the rear electro-proportional relay valve after the current travel speed is equal to the target speed.
5. The electronically controlled brake system of claim 4, wherein the release current signal has a current value of zero.
6. The electrically controlled brake system of claim 1, wherein the two-position, three-way solenoid valve includes an air inlet, an air outlet, and an air outlet;
the air inlet is communicated to the air storage cylinder;
the air outlet is communicated to the parking relay valve.
7. The electric control brake system according to claim 6, wherein upon receiving the parking instruction, the air inlet port is closed, the air outlet port and the air outlet port are opened, and the air outlet port is communicated with the air outlet port to allow the parking relay valve to perform parking air chamber exhaust.
8. The electric control brake system according to claim 6, wherein upon receipt of the parking release command, the exhaust port is closed, the air inlet port and the air outlet port are opened, and the air inlet port is communicated with the air outlet port to inflate the air reservoir to the parking relay valve and the parking air chamber.
9. The electric control brake system according to claim 1, wherein the two-position three-way solenoid valve is further connected to a parking switch to receive a control signal of the parking switch to perform a parking operation or a parking release operation.
10. An unmanned wide-body vehicle, characterized in that, comprises an electric control brake system of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010258314.7A CN111284466A (en) | 2020-04-03 | 2020-04-03 | Electric control brake system and unmanned wide-body vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010258314.7A CN111284466A (en) | 2020-04-03 | 2020-04-03 | Electric control brake system and unmanned wide-body vehicle |
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| CN111284466A true CN111284466A (en) | 2020-06-16 |
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| CN202010258314.7A Pending CN111284466A (en) | 2020-04-03 | 2020-04-03 | Electric control brake system and unmanned wide-body vehicle |
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| CN106494377A (en) * | 2016-09-21 | 2017-03-15 | 比亚迪股份有限公司 | Rail vehicle and its Pneumatic brake systems, Rail Transit System |
| CN106494378A (en) * | 2016-09-21 | 2017-03-15 | 比亚迪股份有限公司 | Rail vehicle and its Pneumatic brake systems, Rail Transit System |
| CN109532795A (en) * | 2018-10-15 | 2019-03-29 | 厦门金龙汽车新能源科技有限公司 | Parking braking system, electric vehicle and the control method of electric vehicle |
| CN209126711U (en) * | 2018-10-15 | 2019-07-19 | 厦门金龙汽车新能源科技有限公司 | The parking braking system and electric vehicle of electric vehicle |
| CN211765487U (en) * | 2020-04-03 | 2020-10-27 | 三一智矿科技有限公司 | Electric control brake system and unmanned wide-body vehicle |
-
2020
- 2020-04-03 CN CN202010258314.7A patent/CN111284466A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106494377A (en) * | 2016-09-21 | 2017-03-15 | 比亚迪股份有限公司 | Rail vehicle and its Pneumatic brake systems, Rail Transit System |
| CN106494378A (en) * | 2016-09-21 | 2017-03-15 | 比亚迪股份有限公司 | Rail vehicle and its Pneumatic brake systems, Rail Transit System |
| CN109532795A (en) * | 2018-10-15 | 2019-03-29 | 厦门金龙汽车新能源科技有限公司 | Parking braking system, electric vehicle and the control method of electric vehicle |
| CN209126711U (en) * | 2018-10-15 | 2019-07-19 | 厦门金龙汽车新能源科技有限公司 | The parking braking system and electric vehicle of electric vehicle |
| CN211765487U (en) * | 2020-04-03 | 2020-10-27 | 三一智矿科技有限公司 | Electric control brake system and unmanned wide-body vehicle |
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