CN112622846B - Slope system and vehicle just park - Google Patents
Slope system and vehicle just park Download PDFInfo
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- CN112622846B CN112622846B CN202011643751.7A CN202011643751A CN112622846B CN 112622846 B CN112622846 B CN 112622846B CN 202011643751 A CN202011643751 A CN 202011643751A CN 112622846 B CN112622846 B CN 112622846B
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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
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/08—Brake-action initiating means for personal initiation hand actuated
- B60T7/10—Disposition of hand control
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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
- B60T13/02—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 mechanical assistance or drive
- B60T13/04—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 mechanical assistance or drive by spring or weight
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Systems And Boosters (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a slope parking system and a vehicle, and relates to the technical field of vehicle parking braking. The temporary stop slope system comprises: the mechanical parking device comprises a manual valve, a first parking relay valve and a spring brake cylinder, wherein the manual valve and the first parking relay valve are both connected with an air source; the gas-electric double-control memory valve is provided with a control valve air inlet, a control valve air outlet, an electrical interface, a power supply and a control valve control port, wherein the electrical interface can be communicated with the power supply to drive the valve block to move to a first preset position and keep the valve block; the pneumatic parking device comprises a second parking relay valve and a brake air chamber, wherein the second parking relay valve and the pneumatic-electric double-control memory valve are both connected with an air source, and the second parking relay valve is connected with the brake air chamber. The invention improves the parking stability, reliability and safety.
Description
Technical Field
The invention relates to the technical field of vehicle parking braking, in particular to a slope temporary parking system and a vehicle.
Background
Commercial vehicles are currently starting later on a slope than passenger cars, especially medium and heavy trucks. The parking is carried out to the mode of generally adopting manual valve + parking relay valve, and the parking principle does: when the automobile is parked, the manual valve is pulled to be located at a parking place, gas at a control port of the parking relay valve is exhausted through an exhaust port of the parking manual valve, so that an exhaust port of the parking relay valve is communicated with an air outlet, and gas in the spring brake cylinder enters the parking relay valve through a pipeline and is rapidly exhausted through the exhaust port to realize braking and parking of the automobile; when the parking of the vehicle is released, the manual valve is pulled to enable the air inlet and the air outlet of the manual valve to be communicated, the air in the air storage cylinder reaches the control port of the parking relay valve through the manual valve to enable the air inlet and the air outlet of the parking relay valve to be communicated, and the air enters the spring brake cylinder through the parking relay valve and the pipeline to push the brake push rod to return to the air cylinder, so that the parking of the vehicle is released. However, when the truck is loaded or unloaded under ultrahigh load and on a slope, the parking stability is difficult to ensure only by adopting the mechanical parking mode for parking on the slope.
With the coming of the internet era, people have higher and higher requirements on vehicle comfort, and the pneumatic electronic parking system is in force. The pneumatic electronic parking system is mechanically connected with the auxiliary parking solenoid valve through the brake device, the temporary parking effect of a vehicle is improved, the auxiliary parking solenoid valve needs to be powered for a long time, the vehicle sliding risk exists when the power failure occurs, and the reliability is low.
Accordingly, there is a need for a temporary hill-holding system and a vehicle, which solve the above problems.
Disclosure of Invention
The invention aims to provide a temporary parking slope system and a vehicle, which improve parking stability, flexibility, reliability and safety.
In order to achieve the purpose, the invention adopts the following technical scheme:
a temporary hill-holding system comprising:
the mechanical parking device comprises a manual valve, a first parking relay valve and a spring brake cylinder, wherein the manual valve is provided with a first air inlet and a first air outlet which can be communicated, the first parking relay valve is provided with a second air inlet and a second air outlet which can be communicated, the first air inlet and the second air inlet are both connected with an air source, the first air outlet is connected with a first control air port of the first parking relay valve, the first air outlet can be communicated with a first air outlet of the manual valve, the second air outlet is connected with the spring brake cylinder, and the second air outlet can be communicated with a second air outlet of the first parking relay valve;
the gas-electric double control memory valve is provided with a control valve air inlet, a control valve air outlet, an electrical interface, a control valve control port and a valve block arranged in the gas-electric double control memory valve, wherein the electrical interface can be communicated with a power supply to drive the valve block to move to a first preset position and keep the valve block, so that the control valve air inlet is communicated with the control valve air outlet, the control valve control port can be communicated with the first air inlet through the first air outlet to drive the valve block to move to a second preset position and keep the valve block, and the control valve air outlet is communicated with the control valve air outlet;
the pneumatic parking device comprises a second parking relay valve and a brake air chamber, wherein the second parking relay valve is provided with a third air inlet and a third air outlet which can be communicated, the air inlet of the control valve and the third air inlet are both connected with the air source, the third air outlet is connected with the brake air chamber, the third air outlet can be communicated with a third air outlet of the second parking relay valve, and a second control air inlet of the second parking relay valve is connected with the air outlet of the control valve.
As a preferred technical scheme of the temporary parking slope system, the mechanical parking device further comprises a first air cylinder, high-pressure air is stored in the first air cylinder, and the first air inlet and the second air inlet are both connected with the first air cylinder.
As a preferred technical scheme of the temporary parking slope system, the pneumatic parking device further comprises a second air cylinder, high-pressure air is stored in the second air cylinder, and the air inlet of the control valve and the air inlet of the third air cylinder are both connected with the second air cylinder.
As a preferred technical solution of the temporary parking slope system, the temporary parking slope system further includes an inflatable brake device, and the inflatable brake device is used for braking the vehicle to stop at a decelerated speed.
As a preferable technical solution of the temporary parking slope system, the inflation braking device includes a pedal plate and a braking valve connected to the pedal plate, the pneumatic-electric double-control memory valve is further provided with a braking control port, the braking valve is provided with a fourth air inlet, a fourth air outlet and a fourth air outlet, the fourth air inlet can be communicated with the fourth air outlet or the fourth air outlet, the fourth air inlet is connected to the second air reservoir, the fourth air outlet is connected to the braking control port, and the braking control port can be communicated with the fourth air inlet through the fourth air outlet to drive the valve block to move to the first preset position and be maintained.
As a preferred technical scheme of the temporary parking slope system, the pneumatic parking device further comprises a pneumatic parking switch, and the pneumatic parking switch is connected with the electrical interface to control the on-off of the pneumatic-electric double-control memory valve.
As a preferred technical scheme of the temporary parking slope system, the pneumatic parking switch is a self-resetting switch.
The spring brake cylinders are four and act on four rear wheels of the vehicle respectively, one first parking relay valve is arranged, and the four spring brake cylinders are connected with a second air outlet of the first parking relay valve.
As a preferred technical scheme of the temporary parking slope system, the number of the brake chambers is four, the four brake chambers are respectively in one-to-one correspondence with four front wheels of a vehicle, the number of the second parking relay valves is two, and a third air outlet of each second parking relay valve is connected with the two brake chambers.
The invention also provides a vehicle comprising the temporary hill-holding system.
The invention has the beneficial effects that:
the invention provides a temporary parking slope system and a vehicle, which have the following working principles:
when the vehicle is parked, the manual valve is pulled to be located in a parking space, the first air outlet is communicated with the first air outlet, air in the first control air port is exhausted through the first air outlet and the first air outlet so that the second air outlet is communicated with the second air outlet, and air in the spring brake cylinder flows into the first parking relay valve and is exhausted through the second air outlet so as to realize rapid braking parking of the vehicle; meanwhile, gas in the gas-electricity double-control memory valve flows into the manual valve through a control valve control port and is discharged through a first exhaust port, an electric interface is communicated with a power supply to drive the valve block to move to a first preset position and keep the valve block, so that a control valve gas inlet is communicated with a control valve gas outlet, a gas source flows to a second control gas port through the control valve gas inlet and the control valve gas outlet so that a third gas inlet is communicated with a third gas outlet, and the gas of the gas source flows into a brake gas chamber through the third gas inlet and the third gas outlet to realize the temporary parking slope of the vehicle;
when parking is released, the manual valve is pulled to be located at a releasing position, the first air outlet is communicated with the first air inlet, air of an air source flows to the first control air port through the manual valve to enable the second air inlet to be communicated with the second air outlet, and the air of the air source flows into the spring brake cylinder through the first parking relay valve to release parking of the vehicle; meanwhile, gas of the gas source flows into the control port of the control valve through the manual valve to drive the valve block to move to a second preset position and keep the second preset position, so that the gas outlet of the control valve is communicated with the gas outlet of the control valve, the gas at the second control gas port is exhausted through the gas outlet of the control valve and the gas outlet of the control valve to enable the third gas outlet to be communicated with the third gas outlet, and the gas in the brake gas chamber is exhausted through the third gas outlet and the third gas outlet to release the slope of the vehicle.
The invention has the following advantages: (1) the mechanical parking device and the pneumatic parking device are integrated to realize the temporary parking slope of the vehicle, so that the conventional mechanical parking brake based on the energy storage spring can be provided for the vehicle, and meanwhile, the pneumatic parking brake can be applied to the non-parking wheel under the working conditions of high load, loading and unloading on a steep slope road and the like, so that the temporary parking slope function of the vehicle is realized, and the parking stability is improved; (2) the pneumatic parking device can select whether to implement the function of parking on the slope or not only on the premise that the mechanical parking device is used for parking, and a user can select whether to electrify the pneumatic-electric double-control memory valve to implement the function of parking on the slope according to the actual condition, so that the parking flexibility is enhanced, the unexpected braking caused by the misoperation of the pneumatic parking device in the normal running process of the vehicle is prevented, and the running safety of the vehicle is improved; (3) because the gas-electricity double-control memory valve has a memory function and is controlled by gas and electricity, when the gas-electricity double-control memory valve is used, the valve block can be driven to move to a first preset position and be kept only by powering on and powering off the gas-electricity double-control memory valve, or the valve block can be driven to move to a second preset position and be kept only by inflating a control opening of the control valve, the gas-electricity double-control memory valve does not need to be powered on for a long time, and the reliability and the adaptability of a system are enhanced.
Drawings
Fig. 1 is a schematic overall structure diagram of a temporary parking slope system provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a manual valve in a hill-side system provided by an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a first parking relay valve in the hill-ward system provided by the embodiment of the invention;
FIG. 4 is a schematic structural diagram of an air-electric double control memory valve in a temporary parking slope system according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a second park relay valve in the hill-ward system provided by the embodiment of the invention;
fig. 6 is a schematic structural diagram of a pneumatic brake device in a hill-side parking system according to an embodiment of the invention.
In the figure:
1. a mechanical parking device; 11. a first gas cartridge; 12. a manual valve; 121. a first air inlet; 122. a first air outlet; 123. a first exhaust port; 13. a first parking relay valve; 131. a second air inlet; 132. a second air outlet; 133. a second exhaust port; 134. a first control port; 14. a spring brake cylinder;
2. a gas-electric double-control memory valve; 21. a control valve air inlet; 22. a control valve outlet; 23. a control valve exhaust port; 24. an electrical interface; 25. a control valve control port; 26. a brake control port;
3. a pneumatic parking device; 31. a second gas cartridge; 32. a second parking relay valve; 321. a third air inlet; 322. a third air outlet; 323. a third exhaust port; 324. a second control port; 33. a brake chamber;
4. an inflation brake device; 41. a foot pedal; 42. a brake valve; 421. a fourth air inlet; 422. a fourth air outlet; 423. a fourth exhaust port;
5. pneumatic parking switch.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The embodiment of the invention provides a temporary parking slope system, which comprises a mechanical parking device 1, an air-electric double-control memory valve 2 and a pneumatic parking device 3, wherein the mechanical parking device 1 is connected with the pneumatic parking device 3 through the air-electric double-control memory valve 2 so as to perform temporary parking slope on a vehicle, as shown in fig. 1-6.
Illustratively, the mechanical parking device 1 includes a manual valve 12, a first parking relay valve 13, and a spring brake cylinder 14, the manual valve 12 and the first parking relay valve 13 are both connected to an air supply, and the first parking relay valve 13 and the spring brake cylinder 14 are connected. Further, the manual valve 12 is provided with a first air inlet 121 and a first air outlet 122 that can communicate. The first parking relay valve 13 is provided with a second air inlet 131 and a second air outlet 132 that can communicate. The first gas inlet 121 and the second gas inlet 131 are both connected to a gas source. The first air outlet port 122 is connected to the first control air port 134 of the first parking relay valve 13, and the first air outlet port 122 can communicate with the first air outlet port 123 of the manual valve 12. A second air outlet 132 is connected to the spring brake cylinder 14, and the second air outlet 132 can communicate with a second air outlet 133 of the first parking relay valve 13.
Illustratively, the gas-electric double control memory valve 2 is provided with a control valve air inlet 21, a control valve air outlet 22, a control valve air outlet 23, an electrical interface 24, a control valve control port 25 and a valve block arranged in the gas-electric double control memory valve 2. Further, the electrical interface 24 can communicate with a power source to drive the valve block to move to the first preset position and hold, so that the control valve air inlet 21 and the control valve air outlet 22 communicate. The control valve control port 25 can communicate with the first inlet port 121 through the first outlet port 122 to drive the valve block to move to the second preset position and hold, so that the control valve outlet port 22 and the control valve outlet port 23 communicate.
The pneumatic parking device 3 includes a second parking relay valve 32 and a brake chamber 33, and the second parking relay valve 32 and the brake chamber 33 are connected. Further, the second parking relay valve 32 is provided with a third air inlet 321 and a third air outlet 322 that can communicate, the third air outlet 322 is connected to the brake chamber 33, and the third air outlet 322 can communicate with the third air outlet 323 of the second parking relay valve 32. The control valve inlet port 21 and the third inlet port 321 are both connected to the air supply, and the second control port 324 of the second park relay valve 32 is connected to the control valve outlet port 22.
To facilitate understanding of the temporary hill-holding system provided in the present embodiment, the operation principle thereof will now be described as follows:
when the vehicle is parked, the manual valve 12 is pulled to be located in a parking space, the first air outlet 122 is communicated with the first air outlet 123, air in the first control air inlet 134 is exhausted through the first air outlet 122 and the first air outlet 123 so as to enable the second air outlet 133 to be communicated with the second air outlet 132, and air in the spring brake cylinder 14 flows into the first parking relay valve 13 and is exhausted through the second air outlet 133 to achieve rapid braking parking of the vehicle; meanwhile, the gas in the gas-electric double-control memory valve 2 flows into the manual valve 12 through the control valve control port 25 and is discharged through the first exhaust port 123, the electric interface 24 is communicated with the power supply to drive the valve block to move to a first preset position and keep the valve block, so that the control valve gas inlet 21 is communicated with the control valve gas outlet 22, the gas of the gas source flows to the second control gas port 324 through the control valve gas inlet 21 and the control valve gas outlet 22 to enable the third gas inlet 321 to be communicated with the third gas outlet 322, and the gas of the gas source flows into the brake gas chamber 33 through the third gas inlet 321 and the third gas outlet 322 to realize the temporary stop slope of the vehicle;
when the parking of the vehicle is released, the manual valve 12 is pulled to be located at a release position, the first air outlet 122 is communicated with the first air inlet 121, air of an air source flows to the first control air port 134 through the manual valve 12 to enable the second air inlet 131 to be communicated with the second air outlet 132, and the air of the air source flows into the spring brake cylinder 14 through the first parking relay valve 13 to release the parking of the vehicle; meanwhile, the gas of the gas source flows into the control valve control port 25 through the manual valve 12 to drive the valve block to move to a second preset position and keep the valve block, so that the control valve gas outlet 22 is communicated with the control valve gas outlet 23, the gas of the second control gas port 324 is discharged through the control valve gas outlet 22 and the control valve gas outlet 23 to enable the third gas outlet 322 to be communicated with the third gas outlet 323, and the gas in the brake gas chamber 33 flows through the third gas outlet 322 and the third gas outlet 323 to be discharged to realize the release of the vehicle from the slope.
Therefore, the invention has the following advantages:
1. the mechanical parking device 1 and the pneumatic parking device 3 are integrated to realize the temporary parking slope of the vehicle, so that the conventional mechanical parking brake based on the energy storage spring can be provided for the vehicle, and meanwhile, the pneumatic parking brake can be applied to non-parking wheels under the working conditions of high load, loading and unloading on a steep slope road and the like, so that the temporary parking slope function of the vehicle is realized, and the parking stability is improved;
2. the pneumatic parking device 3 can select whether to implement the function of parking on the slope or not only on the premise that the mechanical parking device 1 is used for parking, and a user can select whether to electrify the gas-electric double-control memory valve 2 to implement the function of parking on the slope or not according to actual conditions (vehicle load, slope inclination and the like), so that the parking flexibility is enhanced, unexpected braking caused by misoperation of the pneumatic parking device 3 in the normal running process of the vehicle is prevented, and the running safety of the vehicle is improved;
3. because the gas-electricity double-control memory valve 2 has a memory function and is controlled by gas and electricity, when the gas-electricity double-control memory valve is used, the valve block can be driven to move to a first preset position and be kept only by powering on and powering off the gas-electricity double-control memory valve 2, or the valve block can be driven to move to a second preset position and be kept by inflating the control valve opening 25, the gas-electricity double-control memory valve 2 does not need to be powered on for a long time, and the reliability and the adaptability of the system are enhanced.
In this embodiment, the mechanical parking device 1 further comprises a first air cylinder 11, the first air cylinder 11 stores high-pressure air, and the first air inlet 121 and the second air inlet 131 are both connected to the first air cylinder 11 to provide air sources for the manual valve 12 and the first parking relay valve 13.
Further, the manual valve 12 is provided in the cabin of the vehicle for the user's manual operation. Alternatively, as shown in fig. 2, in the example of the left-right direction in fig. 2, the manual valve 12 is provided with a pull rod, the first exhaust port 123 is provided at the bottom of the manual valve 12, and the first inlet port 121 and the first outlet port 122 are provided at the left and right sides of the manual valve 12, respectively. The user can make the first air outlet 122 and the first air outlet 123 or the first air inlet 121 and the first air outlet 122 communicate by pulling the pull rod, so as to realize parking and parking releasing of the vehicle, and the operation is very convenient. Since the specific structure of the manual valve 12 is prior art, it will not be described in detail herein. Of course, in other embodiments, the positions of the first air inlet 121, the first air outlet 122 and the first air outlet 123 may be set according to the requirement, and are not limited to this embodiment.
As shown in fig. 3, in the left-right direction example in fig. 3, the first parking relay valve 13 functions to shorten the parking time period, quickly respond to braking, and improve braking efficiency. Alternatively, the second air inlet 131 and the second air outlet 132 are provided on the left and right sides of the first parking relay valve 13, respectively. The second exhaust port 133 is provided at the bottom of the first parking relay valve 13. The first control port 134 is provided at the top of the first parking relay valve 13. The user can exhaust air from the first control air port 134 by pulling the pull rod, so that the second air outlet 132 is communicated with the second air outlet 133 to realize exhaust braking of the spring brake cylinder 14; or charging first control port 134 charges first control port 134 such that second outlet port 132 is in communication with second inlet port 131 to charge spring brake cylinder 14 to release the parking brake. Since the specific structure of the first parking relay valve 13 is prior art, it will not be described herein. Of course, in other embodiments, the positions of the second air inlet 131, the first control air port 134, the second air outlet 132 and the second air outlet 133 may be set according to the requirement, and are not limited to this embodiment.
Optionally, the spring brake cylinder 14 is used to apply brake parking to the vehicle to ensure vehicle parking stability. When the vehicle is parked, gas in the spring brake cylinder 14 is exhausted, and the brake rod moves close to the traveling wheel under the potential energy of the spring until the brake rod abuts against the traveling wheel tightly, so that the parking is realized; when the parking is released, the gas in the first gas tank 11 is charged into the spring brake cylinder 14 through the first parking relay valve 13, and the gas pressure overcomes the spring force to move the brake lever away from the road wheel. Since the structure and principle of the spring brake cylinder 14 are prior art, they will not be described in detail herein.
In the embodiment, the gas-electric double-control memory valve 2 is controlled by gas and electricity in a matching way, compared with the existing electromagnetic valve which is only controlled by electricity, the dependence on electricity is reduced, and meanwhile, the mechanical parking device 1 and the pneumatic parking device 3 are well integrated together, so that the parking stability of the vehicle is improved. Further, as shown in fig. 4, in the example of the left-right direction and the up-down direction in fig. 4, the control valve inlet 21 and the control valve outlet 22 are respectively provided on the left and right sides of the gas-electric double control memory valve 2. The control valve exhaust port 23 is arranged at the lower part of the gas-electric double control memory valve 2. The control valve control port 25 and the electrical interface 24 are arranged on the upper part of the gas-electric double control memory valve 2. The valve block is movably arranged in the gas-electric double-control memory valve 2. The gas-electric double control memory valve 2 is also provided with a brake control port 26, and the brake control port 26 is also arranged at the upper part of the gas-electric double control memory valve 2. Of course, in other embodiments, the positions of the control valve inlet 21, the control valve outlet 22, the control valve outlet 23, the control valve control port 25, the electrical interface 24 and the brake control port 26 may be set as required, and are not limited to this embodiment.
Optionally, the gas-electric double control memory valve 2 is further provided with a solenoid (not shown in the figure), the electric interface 24 is electrified to enable the solenoid to generate electromagnetic force, and when the control valve control port 25 is communicated with the first exhaust port 123 on the manual valve 12 for exhaust (namely, no gas is abutted on one side of the valve block), the generated electromagnetic force can drive the valve block to move to the first preset position and be kept. When the control valve port 25 is communicated with the first gas cartridge 11 through the manual valve 12 to inflate the gas-electric double control memory valve 2 (i.e., continuously inflate the valve block side), the valve block can be moved to the second preset position and held under the gas thrust.
Further combining with vehicle parking analysis, a user can discharge the gas in the gas-electric double-control memory valve 2 through the control valve control port 25 by pulling the pull rod, and at the moment, the electric interface 24 is switched on to drive the valve block to move to a first preset position and keep the valve block, so that the pneumatic parking device 3 is started to realize the temporary parking slope of the vehicle; or the gas in the first gas cylinder 11 is filled into the gas-electric double-control memory valve 2 through the control valve control port 25 to drive the valve block to move to a second preset position so as to release the temporary parking slope of the vehicle by the pneumatic parking device 3. Therefore, the gas-electric double-control memory valve 2 is started and stopped by charging and discharging air to the control valve control port 25 on the manual valve 12, and when the manual valve 12 is not operated, the valve block which is electrified by the electric interface 24 even if the manual valve is operated by mistake can not move under the gas thrust, thereby preventing the unexpected braking of the vehicle and improving the safety of the vehicle running.
Accordingly, the pneumatic parking apparatus 3 further includes a second air cartridge 31, the second air cartridge 31 being arranged similarly to the first air cartridge 11, the second air cartridge 31 storing therein high pressure air, and the control valve air inlet 21 and the third air inlet 321 both being connected to the second air cartridge 31 to flow into the brake chamber 33 to temporarily stop the vehicle when the passages are communicated.
As shown in fig. 5, the second parking relay valve 32 also serves to shorten the parking period, respond to braking quickly, and improve braking efficiency, in the example of the left-right, up-down direction in fig. 5. Alternatively, the third air inlet 321 and the third air outlet 322 are provided on the left and right sides of the second parking relay valve 32, respectively. The third exhaust port 323 is provided at a lower portion of the second parking relay valve 32. The second control port 324 is provided at an upper portion of the second parking relay valve 32. When the valve block is at the first preset position, the third air inlet 321 and the third air outlet 322 of the second parking relay valve 32 are communicated, and the air in the second air reservoir 31 flows into the brake air chamber 33 through the second parking relay valve 32 to be subjected to the temporary parking slope, so that the vehicle can be stably parked by cooperating with the mechanical parking device 1. When the valve block is at the second preset position, the third air outlet 322 of the second parking relay valve 32 is communicated with the third air outlet 323, and the air in the brake chamber 33 is exhausted through the third air outlet 323 to release the adjacent parking slope. Of course, in other embodiments, the positions of the third air inlet 321, the third air outlet 322, the third air outlet 323 and the second control air inlet 324 may be set according to the requirement, and are not limited to this embodiment.
The principle of the brake chamber 33 is opposite to that of the spring brake cylinder 14, when the vehicle is parked, the air in the second air reservoir 31 is filled into the brake chamber 33 through the second parking relay valve 32, and then the brake push rod can be pushed out to brake and park the road wheel; when the parking is released, the air in the brake chamber 33 is discharged through the third exhaust port 323 of the second parking relay valve 32, and the brake rod is retracted into the brake chamber 33 to release the parking of the vehicle. Since the structure and principle of the brake chamber 33 are prior art, it is not described herein in detail.
As a preferable technical solution of the temporary stop slope system, the temporary stop slope system further includes an inflatable brake device 4, and the inflatable brake device 4 is used for braking the vehicle to stop at a decelerated speed.
The inflation brake device 4 comprises a pedal plate 41 and a brake valve 42 connected with the pedal plate 41, the brake valve 42 is provided with a fourth air inlet 421, a fourth air outlet 422 and a fourth air outlet 423, the fourth air inlet 421 can be communicated with the fourth air outlet 422 or the fourth air outlet 423, the fourth air inlet 421 is connected with the second air cylinder 31, the fourth air outlet 422 is connected with a brake control port 26, and the brake control port 26 can be communicated with the fourth air inlet 421 through the fourth air outlet 422 to drive the valve block to move to a first preset position and be kept. When the vehicle needs to be decelerated and stopped, the pedal 41 is stepped to enable the fourth air inlet 421 and the fourth air outlet 422 of the brake valve 42 to be communicated, the air in the second air reservoir 31 flows to the brake control port 26 through the brake valve 42 to drive the valve block to move to the first preset position, the air in the second air reservoir 31 flows to the second control port 324 through the air-electric double control memory valve 2 to enable the third air inlet 321 and the third air outlet 322 of the second parking relay valve 32 to be communicated, and the air in the second air reservoir 31 flows into the brake air chamber 33 through the second parking relay valve 32 to realize braking deceleration of the vehicle. The speed and the braking time of braking deceleration can be controlled by controlling the treading force of the pedal 41, the pneumatic parking device is very convenient and fast, the pneumatic braking device 4 and the pneumatic parking device 3 are integrated, the pneumatic parking device is integrated and dual-purpose, the structure is further compact, and the space is saved.
As a preferable technical scheme of the temporary parking slope system, the pneumatic parking device 3 further comprises a pneumatic parking switch 5, and the pneumatic parking switch 5 is connected with the electrical interface 24 to control the on-off of the pneumatic-electric double-control memory valve 2. Preferably, the pneumatic parking switch 5 is a self-reset switch, and can be automatically reset after being used every time, manual reset is not needed, and operation steps are reduced. Since the structure and principle of the self-resetting switch are well known in the art, they are not described in detail herein.
To facilitate understanding of the hill-hold system provided in the present embodiment, the sequence of activation of the mechanical parking device 1, the pneumatic parking device 3, and the pneumatic brake device 4 in actual vehicle driving will now be described as follows:
when the vehicle needs to be decelerated and braked in the process of running on a slope or a flat road, the pedal plate 41 is trampled to start the inflatable brake device 4 to decelerate and stop the vehicle; after the vehicle is stopped stably, pulling the pull rod, and starting the mechanical parking device 1 to park the vehicle; and (3) slowly releasing the pedal plate 41, if the vehicle slides, pressing the pneumatic parking switch 5, starting the pneumatic parking device 3 to park the vehicle on the slope, and improving the parking stability of the vehicle.
It should be noted that the vehicle in this embodiment is a medium-heavy truck, specifically an 8X4 truck, that is, has eight road wheels. Of course, in other embodiments, the present system may be applied to other types of vehicles, and is not limited to the present embodiment.
In the present embodiment, four spring brake cylinders 14 are provided to act on four rear wheels of the vehicle, one first parking relay valve 13 is provided, and four spring brake cylinders 14 are connected to the second air outlet 132 of one first parking relay valve 13 to control the braking and parking of the four spring brake cylinders 14 through one first parking relay valve 13. In other embodiments, four spring brake cylinders 14 may be provided, which act on four rear wheels of the vehicle, and two first parking relay valves 13 may be provided, and the second air outlet 132 of each first parking relay valve 13 is connected to two spring brake cylinders 14, respectively, so as to control the braking parking of the two spring brake cylinders 14 through one first parking relay valve 13. Or one first parking relay valve 13 is arranged according to the requirement to control the brake parking of three or more spring brake cylinders 14, and the invention is not limited by the embodiment.
Alternatively, four brake chambers 33 are provided, which are respectively provided corresponding to four front wheels of the vehicle, two second parking relay valves 32 are provided, and the third air outlet 322 of each second parking relay valve 32 is respectively connected to two brake chambers 33, so as to control the adjacent parking slopes of the two brake chambers 33 through one second parking relay valve 32. In other embodiments, four brake chambers 33 may be provided, which are respectively arranged corresponding to four front wheels of the vehicle, one second parking relay valve 32 is provided, and the four brake chambers 33 are all connected with the third air outlet 322 of one second parking relay valve 32, so as to control the slope of the four brake chambers 33 through one second parking relay valve 32. Or one second parking relay valve 32 is arranged as required to control the brake parking of three or more brake chambers 33, which is not limited by the embodiment.
It should be noted that the first preset position mentioned in the present embodiment is a position where the control valve air inlet 21 and the control valve air outlet 22 are communicated. The second preset position is a position where the control valve outlet 22 and the control valve outlet 23 communicate. The front and rear are described as examples of the traveling direction of the vehicle, but the brake chamber 33 may be provided corresponding to the rear wheels of the vehicle, or the spring brake cylinder 14 may be provided corresponding to the front wheels of the vehicle, and the present embodiment is not limited thereto.
The embodiment of the invention also provides a vehicle comprising the temporary stop slope system.
In summary, according to the temporary parking slope system and the vehicle provided by the embodiment of the invention, the mechanical parking device 1 and the pneumatic parking device 3 are integrated to realize temporary parking slope of the vehicle, so that not only can conventional mechanical parking brake based on an energy storage spring be provided for the vehicle, but also pneumatic parking brake can be applied to non-parking wheels under working conditions of high load, loading and unloading on a steep slope road and the like, so that the temporary parking slope function of the vehicle is realized, and the parking stability is improved;
the pneumatic parking device 3 can select whether to implement the function of parking on the slope or not only on the premise that the mechanical parking device 1 is used for parking, and a user can select whether to electrify the pneumatic-electric double-control memory valve 2 to implement the function of parking on the slope according to actual conditions, so that the parking flexibility is enhanced, unexpected braking caused by misoperation of the pneumatic parking device 3 in the normal running process of the vehicle is prevented, and the running safety of the vehicle is improved;
because the gas-electricity double-control memory valve 2 has a memory function and is controlled by gas and electricity, when the gas-electricity double-control memory valve is used, the valve block can be driven to move to a first preset position and be kept only by powering on and powering off the gas-electricity double-control memory valve 2, or the valve block can be driven to move to a second preset position and be kept by inflating the control valve opening 25, the gas-electricity double-control memory valve 2 does not need to be powered on for a long time, and the reliability and the adaptability of the system are enhanced.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A temporary stop ramp system, comprising:
a mechanical parking device (1) comprising a manual valve (12), a first parking relay valve (13) and a spring brake cylinder (14), the manual valve (12) is provided with a first air inlet (121) and a first air outlet (122) which can be communicated, the first parking relay valve (13) is provided with a second air inlet (131) and a second air outlet (132) which can be communicated, the first air inlet (121) and the second air inlet (131) are both connected with an air source, the first air outlet (122) is connected with a first control air port (133) of the first parking relay valve (13), the first air outlet (122) can be communicated with a first air outlet (123) of the manual valve (12), the second air outlet (132) is connected with the spring brake cylinder (14), and the second air outlet (132) can be communicated with a second air outlet (134) of the first parking relay valve (13);
the gas-electric double control memory valve (2) is provided with a control valve air inlet (21), a control valve air outlet (22), a control valve air outlet (23), an electrical interface (24), a control valve control port (25), an electromagnetic coil and a valve block arranged in the gas-electric double control memory valve (2), wherein the electrical interface (24) can be communicated with a power supply so that the electromagnetic coil generates electromagnetic force to drive the valve block to move to a first preset position and keep the valve block, the control valve air inlet (21) is communicated with the control valve air outlet (22), the control valve control port (25) can be communicated with the first air inlet (121) through the first air outlet (122) so as to drive the valve block to move to a second preset position and keep the valve block, and the control valve air outlet (22) is communicated with the control valve air outlet (23);
pneumatic parking device (3), including second parking relay valve (32) and brake chamber (33), second parking relay valve (32) are equipped with third air inlet (321) and third gas outlet (322) that can be linked together, control valve air inlet (21) with third air inlet (321) all with the air supply is connected, third gas outlet (322) with brake chamber (33) are connected, third gas outlet (322) can with third gas vent (323) the intercommunication of second parking relay valve (32), the second control gas port (324) of second parking relay valve (32) with control valve gas outlet (22) are connected.
2. The temporary stop slope system according to claim 1, wherein the mechanical parking device (1) further comprises a first gas cartridge (11), the first gas cartridge (11) storing high pressure gas therein, the first gas inlet (121) and the second gas inlet (131) both being connected to the first gas cartridge (11).
3. The temporary stop slope system according to claim 2, wherein the pneumatic parking device (3) further comprises a second gas cartridge (31), the second gas cartridge (31) storing high pressure gas therein, the control valve gas inlet (21) and the third gas inlet (321) both being connected to the second gas cartridge (31).
4. The hill-holding system according to claim 3, characterized in that the hill-holding system further comprises a pneumatic brake device (4), the pneumatic brake device (4) being used for braking the vehicle to a decelerated stop.
5. The temporary stop slope system according to claim 4, wherein the inflation brake device (4) comprises a foot pedal (41) and a brake valve (42) connected with the foot pedal (41), the gas-electric double-control memory valve (2) is also provided with a brake control port (26), the brake valve (42) is provided with a fourth air inlet (421), a fourth air outlet (422) and a fourth air outlet (423), the fourth air inlet (421) is communicable with the fourth air outlet (422) or the fourth air outlet (423), the fourth air inlet (421) is connected with the second air cylinder (31), the fourth air outlet (422) is connected with the brake control port (26), the brake control port (26) can be communicated with the fourth air inlet (421) through the fourth air outlet (422) to drive the valve block to move to the first preset position and be maintained.
6. The temporary stop slope system according to claim 1, wherein the pneumatic parking device (3) further comprises a pneumatic parking switch (5), and the pneumatic parking switch (5) is connected with the electrical interface (24) to control the on-off of the gas-electric double-control memory valve (2).
7. The hill-stop system according to claim 6, characterized in that the pneumatic parking switch (5) is a self-resetting switch.
8. The endlessly parking slope system according to any one of claims 1 to 7, characterized in that the spring brake cylinders (14) are provided in four, acting on four rear wheels of the vehicle respectively, and in that the first parking relay valve (13) is provided in one, and in that the four spring brake cylinders (14) are each connected to the second outlet (132) of one of the first parking relay valves (13).
9. The endlessly parking slope system according to any one of the claims 1 to 7, characterized in that there are four brake chambers (33) arranged in one-to-one correspondence with the four forward wheels of the vehicle, respectively, and there are two second parking relay valves (32), the third air outlet (322) of each second parking relay valve (32) being connected to two of said brake chambers (33), respectively.
10. A vehicle comprising a hill-hold system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011643751.7A CN112622846B (en) | 2020-12-30 | 2020-12-30 | Slope system and vehicle just park |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011643751.7A CN112622846B (en) | 2020-12-30 | 2020-12-30 | Slope system and vehicle just park |
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| CN112622846A CN112622846A (en) | 2021-04-09 |
| CN112622846B true CN112622846B (en) | 2022-03-22 |
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| CN202011643751.7A Active CN112622846B (en) | 2020-12-30 | 2020-12-30 | Slope system and vehicle just park |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115303248B (en) * | 2022-08-11 | 2023-06-23 | 一汽解放汽车有限公司 | Parking brake system, vehicle and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718348A (en) * | 2010-01-22 | 2010-06-02 | 杭州前进齿轮箱集团股份有限公司 | Electromagnetic and hydraulic memory valve |
| CN202320266U (en) * | 2011-10-18 | 2012-07-11 | 三一重工股份有限公司 | Pneumatic brake system and vehicle applying same |
| JP2015085869A (en) * | 2013-10-31 | 2015-05-07 | 日立オートモティブシステムズ株式会社 | Brake device |
| CN107512260A (en) * | 2017-07-06 | 2017-12-26 | 中国第汽车股份有限公司 | A kind of electronic parking system based on air pressure redundancy |
| CN108928335A (en) * | 2018-07-16 | 2018-12-04 | 汽解放汽车有限公司 | A kind of automatic breaking system for automatic driving car |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10780872B2 (en) * | 2018-04-17 | 2020-09-22 | Bendix Commercial Vehicle Systems Llc | Apparatus and method for trailer service brake control |
-
2020
- 2020-12-30 CN CN202011643751.7A patent/CN112622846B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718348A (en) * | 2010-01-22 | 2010-06-02 | 杭州前进齿轮箱集团股份有限公司 | Electromagnetic and hydraulic memory valve |
| CN202320266U (en) * | 2011-10-18 | 2012-07-11 | 三一重工股份有限公司 | Pneumatic brake system and vehicle applying same |
| JP2015085869A (en) * | 2013-10-31 | 2015-05-07 | 日立オートモティブシステムズ株式会社 | Brake device |
| CN107512260A (en) * | 2017-07-06 | 2017-12-26 | 中国第汽车股份有限公司 | A kind of electronic parking system based on air pressure redundancy |
| CN108928335A (en) * | 2018-07-16 | 2018-12-04 | 汽解放汽车有限公司 | A kind of automatic breaking system for automatic driving car |
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