CN205292608U - Automatic parking braking system of heavy vehicle based on air pressure brake - Google Patents
Automatic parking braking system of heavy vehicle based on air pressure brake Download PDFInfo
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- CN205292608U CN205292608U CN201620058680.7U CN201620058680U CN205292608U CN 205292608 U CN205292608 U CN 205292608U CN 201620058680 U CN201620058680 U CN 201620058680U CN 205292608 U CN205292608 U CN 205292608U
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Abstract
The utility model discloses aim at providing an automatic parking braking system of heavy vehicle based on air pressure brake, including driving brake unit, parking brake unit and respectively with the driving brake unit with vehicle that parking braking unit electricity is connected travel operating mode collection and the control unit, driving brake unit still includes preceding driving brake unit drive a vehicle after, brake unit and parking auxiliary unit, wherein, the parking auxiliary unit pass through the gas circuit respectively and preceding driving brake unit drives a vehicle brake unit after, and connects, and with the driving brake unit with parking braking unit electricity is connected. Heavy vehicle can eliminate in the automatic parking system of heavy vehicle because its gear is many, from great, stop in the ramp and be difficult to the operation during starting, result in the flame -out and swift current car of vehicle easily, lead to the fact the potential safety hazard of serious traffic accident, the while can lighten block up in the urban district driving burden in highway section and mountain area highway section of heavy vehicle driver by a wide margin.
Description
Technical field
The utility model relates to heavy vehicle breaking system technical field, particularly a kind of heavy vehicle automatic parking brake system based on air pressure braking.
Background technology
At present, automobile automatic parking system Autohold is widely used on passenger car. The automatic parking system of passenger car realizes based on hydraulic braking system, and heavy vehicle is relatively big due to the damping force required for it, generally adopts Pneumatic braking system, and the automatic parking technology based on air pressure braking is in the research stage, does not also have ripe product. Heavy vehicle, particularly adopts the heavy vehicle of manual transmission, owing to its grade of position is many, from great, when parking on ramp and starting, the officer lacked experience is difficult to operation, often cause vehicle stall and the car that slips, it is easy to cause serious traffic accident, there is bigger potential safety hazard.
Practical novel content
The utility model is intended to propose a kind of heavy vehicle automatic parking brake system based on air pressure braking improving heavy vehicle drive safety.
In order to achieve the above object, the present invention provides following technical scheme: the heavy vehicle automatic parking brake system based on air pressure braking described in the utility model, comprising service brake unit, parking braking unit and vehicle driving-cycle collection and control unit, described vehicle driving-cycle collection and control unit are electrically connected with described service brake unit and described parking braking unit respectively; Wherein, described service brake unit comprises the auxiliary unit of front service brake unit, rear service brake unit and parking more further, wherein, the auxiliary unit of parking is connected with described front service brake unit, rear service brake unit respectively by gas circuit, and is electrically connected with described service brake unit and described parking braking unit.
Further, described front service brake unit comprises the first gas receiver, brakes total valve, the first high speed 3-position-3-way solenoid valve and propons service brake air chamber, wherein, first inlet mouth of the total valve of described braking is connected by the air outlet of gas circuit with described first gas receiver, its first air outlet is then connected by the inlet mouth of gas circuit with described first high speed 3-position-3-way solenoid valve, and the air outlet of described first high speed 3-position-3-way solenoid valve is then connected with described propons service brake air chamber by gas circuit;Described rear service brake unit comprises the 2nd gas receiver, the 2nd high speed 3-position-3-way solenoid valve and back axle service brake air chamber, wherein, 2nd inlet mouth of the total valve of described braking is connected by the air outlet of gas circuit with described 2nd gas receiver, its the 2nd air outlet is then connected by the inlet mouth of gas circuit with described 2nd high speed 3-position-3-way solenoid valve, and the air outlet of described 2nd high speed 3-position-3-way solenoid valve is then connected with described back axle service brake air chamber by gas circuit.
Further, driving parking relay1 valve it is provided with between the 2nd air outlet of the total valve of described braking and the inlet mouth of described 2nd high speed 3-position-3-way solenoid valve, wherein, the control mouth of described driving parking relay1 valve is connected by gas circuit with the 2nd air outlet of the total valve of described braking, the inlet mouth of described driving parking relay1 valve is connected by gas circuit with the air outlet of described 2nd gas receiver, and the air outlet of described driving parking relay1 valve is connected by gas circuit with the inlet mouth of described 2nd high speed 3-position-3-way solenoid valve.
Further, described parking braking unit comprises hand and stops valve, the first two-bit triplet normally closed solenoid valve and parking braking air chamber, wherein, described hand stop valve inlet mouth with first or the 2nd the air outlet of gas receiver be connected by gas circuit, the described hand air outlet of valve of stopping is connected by gas circuit with the inlet mouth of described first two-bit triplet normally closed solenoid valve, and the air outlet of described first two-bit triplet normally closed solenoid valve is connected with the inlet mouth of described parking braking air chamber passes through gas circuit.
Further, it is provided with parking braking relay1 valve between the air outlet and the inlet mouth of described parking braking air chamber of described first two-bit triplet normally closed solenoid valve, wherein, the control mouth of described parking braking relay1 valve is connected by gas circuit with the air outlet of described first two-bit triplet normally closed solenoid valve, the inlet mouth of described parking braking relay1 valve is connected by gas circuit with the air outlet of described first gas receiver, and the air outlet of described parking braking relay1 valve is connected by gas circuit with the inlet mouth of described parking braking air chamber.
Further; described parking braking unit also comprises four-loop protection valve; include an inlet mouth and three air outlets; wherein; first, second air outlet of described four-loop protection valve respectively inlet mouth with first and second gas receiver described be connected by gas circuit; stop with the described hand inlet mouth of valve of 3rd air outlet is connected by gas circuit, and the inlet mouth of described loop protection valve is connected with then air outlet with air compressor.
Further, the auxiliary unit of described parking comprises the first two-way one-way valve, the 2nd two-way one-way valve and the 2nd two-bit triplet normally closed solenoid valve; Wherein, the inlet mouth of described 2nd two-bit triplet normally closed solenoid valve is connected by gas circuit with the air outlet of described first gas receiver; Two inlet mouths of described first two-way one-way valve are connected by gas circuit with the air outlet of described 2nd two-bit triplet normally closed solenoid valve and the first air outlet of the total valve of described braking respectively, the air outlet of described first two-way one-way valve then inlet mouth with described first high speed 3-position-3-way solenoid valve be connected by gas circuit; Two inlet mouths of described 2nd two-way one-way valve are connected by gas circuit with the air outlet of described 2nd two-bit triplet normally closed solenoid valve and the 2nd air outlet of the total valve of described braking respectively, the air outlet of described 2nd two-way one-way valve then control mouth with described driving parking relay1 valve be connected by gas circuit.
Further, described vehicle driving-cycle collection and control unit comprise automatic parking controller, automatic parking function system selector switch, engine CAN bus and vehicle condition information sensor group, wherein, described vehicle condition information sensor group comprises: ramp sensor, clutch position sensor, speed of a motor vehicle signal pick-off, baroceptor, described automatic parking function system selector switch, each sensor included by described engine CAN bus and described vehicle condition information sensor group is connected with the signal input terminus of described automatic parking controller respectively, wherein, described automatic parking function system selector switch is in order to On/Off automatic parking function.
Further, described baroceptor is arranged in the gas circuit between the first inlet mouth of the total valve of described braking and the air outlet of described first gas receiver and in gas circuit between the 2nd inlet mouth of the total valve of described braking and the air outlet of described 2nd gas receiver respectively.
Further, described vehicle driving-cycle collection and control unit also comprise the status indicator lamp and trouble lamp that are electrically connected respectively with the signal output terminal of described automatic parking controller, wherein, when the automatic parking function of described heavy vehicle automatic parking brake system is opened, described status indicator lamp is lighted, on the contrary, when the automatic parking function of described heavy vehicle automatic parking brake system is closed, described status indicator lamp extinguishes.
When driver is provided with the heavy vehicle traveling of the heavy vehicle automatic parking brake system based on air pressure braking described in the utility model, when officer is stopped in short time period on ramp, described system adopts service brake unit to carry out parking operation automatically, exceeding threshold value between when the vehicle is stopped, system automatically switches to parking braking unit and carries out parking; When officer is on ramp during stop-start, the described parameter obtained according to engine CAN bus, clutch position sensor etc. based on the heavy vehicle automatic parking brake system of air pressure braking judges, automatically terminate damping force, it is provided that auxiliary ramp starting function. In addition, the described heavy vehicle automatic parking brake system based on air pressure braking has fault alarm function, and when officer has starting intention and do not implement to release manual parking operation, system alarm, during vehicle backing, closes automatic parking function; When the system fault, system default is parked state and reports to the police.
Heavy vehicle automatic parking system based on air pressure braking described in the utility model can eliminate heavy vehicle, particularly adopt the heavy vehicle of manual transmission, owing to its grade of position is many, from great, it is difficult to operation when parking on ramp and starting, easily cause vehicle stall and the car that slips, cause the potential safety hazard of serious traffic accident, can significantly alleviate heavy vehicle officer in the driving burden of urban district congested link and section, mountain area simultaneously.
Accompanying drawing explanation
From the following description of the preferred embodiments and drawings to purport and use thereof that the present invention is described, the above and other objects, features and advantages of the present invention will be apparent, in the accompanying drawings:
Fig. 1 shows the connection diagram of the heavy vehicle automatic parking system based on air pressure braking described in the utility model.
[main element nomenclature]
Brake total valve 11
The 2nd two-way two-way one-way valve 13 of one-way valve 12 first
2nd two-bit triplet normally closed solenoid valve 14
First high speed 3-position-3-way solenoid valve 15 the 2nd high speed 3-position-3-way solenoid valve 16
Propons service brake air chamber 17 back axle service brake air chamber 18
Driving parking relay1 valve 19
Hand is stopped valve 21
First two-bit triplet normally closed solenoid valve 22
Parking braking relay1 valve 23 parking braking air chamber 24
Automatic parking controller 31
Automatic parking function system selector switch 32
Ramp sensor 33 clutch position sensor 34
Speed of a motor vehicle signal pick-off 35 baroceptor 36
Status indicator lamp 37 trouble lamp 38
Four-loop protection valve 41
First gas receiver 42 the 2nd gas receiver 43
Embodiment
Below in conjunction with accompanying drawing, guide arm support described in the utility model is described.
Heavy vehicle automatic parking brake system based on air pressure braking described in the utility model, comprising service brake unit, parking braking unit and vehicle driving-cycle collection and control unit, described vehicle driving-cycle collection and control unit are electrically connected with described service brake unit and described parking braking unit respectively; Wherein, described service brake unit comprises the auxiliary unit of front service brake unit, rear service brake unit and parking more further, wherein, the auxiliary unit of described parking is connected with described front service brake unit, rear service brake unit respectively by gas circuit, and is electrically connected with described service brake unit and described parking braking unit.
As shown in Figure 1, in a better embodiment of the present utility model, described front service brake unit comprises the first gas receiver 42, brake total valve 11, first high speed 3-position-3-way solenoid valve 15 and propons service brake air chamber 17, wherein, first inlet mouth of the total valve of described braking 11 is connected by the air outlet of gas circuit with described first gas receiver 42, its first air outlet is then connected by the inlet mouth of gas circuit with described first high speed 3-position-3-way solenoid valve 15, the air outlet of described first high speed 3-position-3-way solenoid valve 15 is then connected with described propons service brake air chamber 17 by gas circuit.Wherein, in the utility model, the principle of work of described first high speed 3-position-3-way solenoid valve 15 is as follows: when the pressurize coil electricity of described first high speed 3-position-3-way solenoid valve 15, and its inlet mouth, air outlet and venting port are not all connected; When the decompression coil electricity of described first high speed 3-position-3-way solenoid valve 15, its air outlet is connected with venting port; And when the pressurize coil of described first high speed 3-position-3-way solenoid valve 15 is not all energized with decompression coil, its inlet mouth is connected with air outlet.
Further, described rear service brake unit comprises the 2nd gas receiver 43, the 2nd high speed 3-position-3-way solenoid valve 16 and back axle service brake air chamber 18, wherein, 2nd inlet mouth of the total valve of described braking 11 is connected by the air outlet of gas circuit with described 2nd gas receiver 43, its the 2nd air outlet is then connected by the inlet mouth of gas circuit with described 2nd high speed 3-position-3-way solenoid valve 16, and the air outlet of described 2nd high speed 3-position-3-way solenoid valve 16 is then connected with described back axle service brake air chamber 18 by gas circuit. Identically with the principle of work of described first high speed 3-position-3-way solenoid valve 15, the principle of work of described 2nd high speed 3-position-3-way solenoid valve 16 in the utility model is as follows: when the pressurize coil electricity of described 2nd high speed 3-position-3-way solenoid valve 16, and its inlet mouth, air outlet and venting port are not all connected; When the decompression coil electricity of described 2nd high speed 3-position-3-way solenoid valve 16, its air outlet is connected with venting port; And when the pressurize coil of described 2nd high speed 3-position-3-way solenoid valve 16 is not all energized with decompression coil, its inlet mouth is connected with air outlet.
Further, the time is set up in order to shorten described rear service brake unit reaction times and pressure, driving parking relay1 valve 19 it is provided with between the 2nd air outlet of the total valve of described braking 11 and the inlet mouth of described 2nd high speed 3-position-3-way solenoid valve 16, wherein, 2nd air outlet of the control mouth of described driving parking relay1 valve 19 valve 11 total with described braking is connected by gas circuit, the inlet mouth of described driving parking relay1 valve 19 is connected by gas circuit with the air outlet of described 2nd gas receiver 43, the air outlet of described driving parking relay1 valve 19 is connected by gas circuit with the inlet mouth of described 2nd high speed 3-position-3-way solenoid valve 16. when officer steps on the total valve 11 of described braking, the output pressure of the total valve 11 of described braking the 2nd air outlet inputs as the control pressure of described driving parking relay1 valve 19, under control pressure effect, intake valve is pushed open, so pressurized air just directly enters described 2nd high speed 3-position-3-way solenoid valve 16 by inlet mouth by the 2nd gas receiver 43, then described back axle service brake air chamber 18 is entered by described 2nd high speed 3-position-3-way solenoid valve 16, thus without the need to flowing through the total valve 11 of described braking again, this substantially reduces the inflation pipeline of described back axle service brake air chamber 18, accelerate the gas replenishment process of air chamber.
Again as shown in Figure 1, described parking braking unit comprises hand and stops valve 21, first two-bit triplet normally closed solenoid valve 22 and parking braking air chamber 24, wherein, described hand stop valve 21 inlet mouth with first or the 2nd the air outlet of gas receiver 42,43 be connected by gas circuit, the described hand air outlet of valve 21 of stopping is connected by gas circuit with the inlet mouth of described first two-bit triplet normally closed solenoid valve 22, and the air outlet of described first two-bit triplet normally closed solenoid valve 22 is connected with the inlet mouth of described parking braking air chamber 24 passes through gas circuit.Wherein, the principle of work of described first two-bit triplet normally closed solenoid valve 22 is as follows: when described first two-bit triplet normally closed solenoid valve 22 is energized, its inlet mouth is connected with air outlet; And when the first two-bit triplet normally closed solenoid valve 22 is not energized, its air outlet is connected with venting port.
The time is set up in order to shorten described parking braking unit reaction times and pressure further, selectively between the air outlet and the inlet mouth of described parking braking air chamber 24 of described first two-bit triplet normally closed solenoid valve 22, it is provided with parking braking relay1 valve 23, wherein, the control mouth of described parking braking relay1 valve 23 is connected by gas circuit with the air outlet of described first two-bit triplet normally closed solenoid valve 22, the inlet mouth of described parking braking relay1 valve 23 is connected by gas circuit with the air outlet of described first gas receiver 42, the air outlet of described parking braking relay1 valve 23 is connected by gas circuit with the inlet mouth of described parking braking air chamber 24. when officer hold described hand stop valve 21 time, the stop output pressure of air outlet of valve 21 of described hand inputs as the control pressure of described parking braking relay1 valve 23, under control pressure effect, intake valve is pushed open, so pressurized air just directly enters described parking braking air chamber 24 by inlet mouth by the first gas receiver 42, thus stop valve 21 without the need to flowing through described hand again, shorten the inflation pipeline of described parking braking air chamber 24, accelerate the gas replenishment process of air chamber.
Preferably, in a better embodiment of the present utility model as shown in Figure 1, in order to the normal workpiece of each gas circuit ensured in described system, described parking braking unit also comprises four-loop protection valve 41, described four-loop protection valve 41 includes an inlet mouth and three air outlets, wherein, the first of described four-loop protection valve 41, 2nd air outlet is respectively with described first, two gas receivers 42, the inlet mouth of 43 is connected by gas circuit, stop with the described hand inlet mouth of valve 21 of 3rd air outlet is connected by gas circuit, the inlet mouth of described four-loop protection valve 41 is then connected with the air outlet of air compressor (not shown). like this, the gas circuit in described system is divided into four and had not only connected each other but also separate loop, when fault occurs in any one loop, does not affect other loop normal operation and inflations.
Further, vehicle in order to make the speed of a motor vehicle be down to zero keeps safe parked state, heavy vehicle automatic parking brake system described in the utility model comprises the auxiliary unit of described parking, as described above, the auxiliary unit of described parking is connected with described front service brake unit, rear service brake unit respectively by gas circuit, and is electrically connected with described service brake unit and described parking braking unit.
Preferably, in a better embodiment of the present utility model, the auxiliary unit of described parking comprises the first two-way one-way valve 13, the 2nd two-way one-way valve 12 and the 2nd two-bit triplet normally closed solenoid valve 14, wherein, the inlet mouth of described 2nd two-bit triplet normally closed solenoid valve 14 is connected by gas circuit with the air outlet of described first gas receiver 43, two inlet mouths of described first two-way one-way valve 13 are connected by gas circuit with the air outlet of described 2nd two-bit triplet normally closed solenoid valve 14 and the first air outlet of the total valve 11 of described braking respectively, the air outlet of described first two-way one-way valve 13 then inlet mouth with described first high speed 3-position-3-way solenoid valve 15 be connected by gas circuit, the effect of described first two-way one-way valve 13 is (wherein to come from the air outlet of described 2nd two-bit triplet normally closed solenoid valve 14 by two-way air inlet, another road then comes from the first air outlet of the total valve 11 of described braking) in pressure relatively Gao mono-tunnel air inlet export by air outlet, it is delivered to the inlet mouth of described first high speed 3-position-3-way solenoid valve 15,Two inlet mouths of described 2nd two-way one-way valve 12 are connected by gas circuit with the air outlet of described 2nd two-bit triplet normally closed solenoid valve 14 and the 2nd air outlet of the total valve 11 of described braking respectively, the air outlet of described 2nd two-way one-way valve 12 then control mouth with described driving parking relay1 valve 19 be connected by gas circuit, the effect of described 2nd two-way one-way valve 12 is (wherein to come from the air outlet of described 2nd two-bit triplet normally closed solenoid valve 14 by two-way air inlet, another road then comes from the 2nd air outlet of the total valve 11 of described braking) in pressure relatively Gao mono-tunnel air inlet export by air outlet, it is delivered to the control mouth of described driving parking relay1 valve 19. when described 2nd two-bit triplet normally closed solenoid valve 14 is energized, its inlet mouth is connected with air outlet, and when the 2nd two-bit triplet normally closed solenoid valve 14 is not energized, then its air outlet is connected with venting port.
Further, described vehicle driving-cycle collection and control unit comprise automatic parking controller 31, automatic parking function system selector switch 32, engine CAN bus and vehicle condition information sensor group, wherein, described vehicle condition information sensor group comprises: for the ramp sensor 33 of the ramp information in ramp residing for collection vehicle, for the clutch position sensor 34 of collection vehicle clutch position information, for the speed of a motor vehicle signal pick-off 35 of the real-time speed of collection vehicle, for gathering the baroceptor 36 of corresponding gas circuit air pressure, described automatic parking function system selector switch 32, each sensor included by described engine CAN bus and described vehicle condition information sensor group is connected with the signal input terminus of described automatic parking controller 31 respectively, wherein, described automatic parking function system selector switch 32 is in order to On/Off automatic parking function. as shown in Figure 1, in above-mentioned better embodiment described in the utility model, described baroceptor 36 is made up of one pair of baroceptor 36, it is arranged in the gas circuit between the first inlet mouth of the total valve of described braking 11 and the air outlet of described first gas receiver and in gas circuit between the 2nd inlet mouth of the total valve of described braking 11 and the air outlet of described 2nd gas receiver respectively, for measuring the air pressure of above-mentioned two gas circuits in real time, and measured result is transferred to described automatic parking controller 31.
Again further, described vehicle driving-cycle collection and control unit also comprise the status indicator lamp 37 and trouble lamp 38 that are electrically connected respectively with the signal output terminal of described automatic parking controller 31, wherein, when described automatic parking function system selector switch 32 closes, the automatic parking function of described heavy vehicle automatic parking brake system is opened, described status indicator lamp 37 is lighted, on the contrary, when described automatic parking function system selector switch 32 disconnects, then described automatic parking function is closed, and described status indicator lamp 37 extinguishes.
The working process of a better embodiment of the present utility model as shown in Figure 1 is as mentioned below:
The concrete working process of this practicality is as follows:
One, braking operation process
In vehicle movement process, when officer steps on the total valve 11 of braking, its first, second inlet mouth is connected with its first, second air outlet respectively. now, the high pressure gas flowed out from described first gas receiver 42 enter propons service brake air chamber 17 through total valve 11, the first high speed 3-position-3-way solenoid valve 15 of braking, and the high pressure gas flowed out from described 2nd gas receiver 43 flow into the control mouth of described driving parking relay1 valve 19 through the total valve 11 of braking, under the promotion of the high pressure gas of ramp metering mouth, the intake valve of described driving parking relay1 valve 19 is open, so high pressure gas just directly enter described 2nd high speed 3-position-3-way solenoid valve 16 via described driving parking relay1 valve 19 by the 2nd gas receiver 43, then described back axle service brake air chamber 18 is entered by described 2nd high speed 3-position-3-way solenoid valve 16, this makes the air pressure in described propons service brake air chamber 17 and described back axle service brake air chamber 18 constantly raise, thus promote the piston of stopper, wheel is applied braking, until vehicle speed reduces to zero.In whole process, pressurize coil and the decompression coil of first, second high speed 3-position-3-way solenoid valve 15,16 described are not all energized.
When the damping force that described forward and backward bridge service brake air chamber 17,18 produces makes vehicle speed be zero, the pressurize coil electricity of first, second high speed three-position three-way valve 15,16 described given by described automatic parking controller 31 simultaneously, described in making, the inlet mouth of first, second high speed three-position three-way valve 15,16, air outlet and venting port are not all connected, so that the air pressure of described propons service brake air chamber 17 and back axle service brake air chamber 18 is in maintaining condition, vehicle is made to enter interim parked state.
After officer unclamps the total valve 11 of braking, described automatic parking controller 31 is energized to the described 2nd two-bit triplet normally closed solenoid valve 14 in the auxiliary unit of described parking, the inlet mouth of described 2nd two-bit triplet normally closed solenoid valve 14 is connected, to described first with air outlet, two high speed three-position three-way valves 15, the pressurize coil blackout of 16, makes described first, two high speed three-position three-way valves 15, the inlet mouth of 16 is connected with air outlet, thus assists unit to be front by the gas flowed out in described first gas receiver 42 via described parking, back axle service brake air chamber 17, 18 inflations, so that the air pressure in above-mentioned air chamber continues to raise, until before described, back axle service brake air chamber 17, after the air pressure of 18 is increased to the safe air pressure corresponding with the current gradient, described automatic parking controller 31 gives described first, 2nd high speed three-position three-way valve 15, the pressurize coil electricity of 16, make described before, back axle service brake air chamber 17, air pressure in 18 remains on current state, so that it is guaranteed that vehicle parking safety. in this better embodiment, the gradient of actual travel road is divided into degree slight, middle, severe according to its inclined degree, and each inclined degree is to there being a safe air pressure, and inclined degree is more serious, and corresponding safe atmospheric pressure value is also more high. during real work, ramp sensor 33 in described vehicle driving-cycle collection and control unit gathers the inclined degree of actual travel road, and result is delivered to described automatic parking controller 31, described automatic parking controller 31 determines corresponding safe air pressure according to the inclined degree obtained, and described baroceptor gather in real time described before, back axle service brake air chamber 17, air pressure in 18, and the result gathered is returned to described automatic parking controller 31, and compared with determined safe air pressure, before described, back axle service brake air chamber 17, when the air pressure of 18 is suitable with safe air pressure, described automatic parking controller 31 gives described first, 2nd high speed three-position three-way valve 15, the pressurize coil electricity of 16, make described before, back axle service brake air chamber 17, air pressure in 18 remains on current state, so that it is guaranteed that vehicle parking safety.
When the interim parking time exceedes system thresholds, described first two-bit triplet normally closed solenoid valve 22 power-off given by automatic parking controller 31, the air outlet of described first two-bit triplet normally closed solenoid valve 22 is connected with venting port, then makes the air pressure of described parking braking air chamber 24 through parking braking unit pressure release. When the power-off time of described first two-bit triplet normally closed solenoid valve 22 exceedes threshold value, the decompression coil electricity of first and second high speed three-position three-way valve 15,16 described given by automatic parking controller 31, the air outlet of first and second high speed three-position three-way valve 15,16 described is connected with venting port, then making described propons service brake air chamber 17, back axle service brake air chamber 18 pressure release, vehicle enters parked state.
And when officer do not step on braking total valve 11, vehicle due to the factor such as frictional force, resistance is decelerated to the speed of a motor vehicle naturally be zero time. described automatic parking controller 31 is energized to the described 2nd two-bit triplet normally closed solenoid valve 14 in the auxiliary unit of described parking, the inlet mouth of described 2nd two-bit triplet normally closed solenoid valve 14 is connected with air outlet, to described first, two high speed three-position three-way valves 15, the pressurize coil blackout of 16, make described first, two high speed three-position three-way valves 15, the inlet mouth of 16 is connected with air outlet, thus assist unit to be front by the gas flowed out in described first gas receiver 42 via described parking, back axle service brake air chamber 17, 18 inflations, so that the air pressure in above-mentioned air chamber continues to raise, until before described, back axle service brake air chamber 17, after the air pressure of 18 is increased to the safe air pressure corresponding with the current gradient, described automatic parking controller 31 gives described first, 2nd high speed three-position three-way valve 15, the pressurize coil electricity of 16, make described before, back axle service brake air chamber 17, air pressure in 18 remains on current state. now, vehicle enters interim parked state.
Two, the auxiliary working process of ramp starting
When vehicle is in interim parked state, the pressurize coil of first and second high speed three-position three-way valve 15,16 described is in switch-on regime, its inlet mouth, air outlet and venting port all not conductings. now, described propons service brake air chamber 17, back axle service brake air chamber 18 have the braking air pressure making vehicle keep stopping. engine actual torque output value on the clutch position that heavy vehicle automatic parking brake system described in the utility model gathers according to clutch position sensor 34 and engine CAN bus judges whether officer has starting intention, when the engine actual torque output value on the clutch position that described clutch position sensor 34 gathers and engine CAN bus is all greater than threshold value, described heavy vehicle automatic parking brake system thinks that officer has starting intention, now, the actual output torque value of the engine that the real time data of described automatic parking controller 31 according to the current gradient (gathering by described ramp sensor 33) with by reading engine CAN bus obtains is to described first, 2nd high speed three-position three-way valve 15, 16 output high frequency switch controlling signals, make described first, 2nd high speed three-position three-way valve 15, 16 high frequency switchings between packing state and decompression state, thus be described propons service brake air chamber 17 and the steady pressure release of described back axle service brake air chamber 18, to realize the object that vehicle is steadily started to walk.
And when vehicle is in parked state, when judging that officer has starting intention, described automatic parking controller 31 is energized first to described 2nd two-bit triplet normally closed solenoid valve 14, the inlet mouth of described 2nd two-bit triplet normally closed solenoid valve 14 is connected with air outlet, after the air inlet time of described propons service brake air chamber 17 with described back axle service brake air chamber 18 is greater than threshold value, described automatic parking controller 31 exports high frequency switch controlling signal according to the actual output torque value of the current gradient and engine to first, second high speed three-position three-way valve 15,16 described; Simultaneously, described automatic parking controller 31 is energized to described first two-bit triplet normally closed solenoid valve 22, its inlet mouth and air outlet are connected, so that described parking braking air chamber 24 pressurizes, and thus release braking, thus while releasing described parking braking air chamber 24 damping force, it is achieved the steady pressure release of described forward and backward bridge service brake air chamber 17,18.Thus realize the steady starting of vehicle.
Three, fault alarm and safe redundancy of effort process
In the utility model, input and output signal is carried out Real-Time Monitoring by described automatic parking controller 31, and when officer has starting intention and do not implement to release manual parking operation, trouble lamp 38 is lighted; When confirming that officer has car backing operation, closing automatic parking function, status indicator lamp 37 extinguishes; When the system fault, described first two-bit triplet normally closed solenoid valve 22 power-off, to realize parking braking, trouble lamp 38 is lighted simultaneously.
Although depicting the utility model at this by embodiment, but those of ordinary skill in the art know, when not departing from spirit of the present utility model and essence, so that it may making the utility model have many distortion and change, scope of the present utility model is limited to the appended claims.
Claims (10)
1. the heavy vehicle automatic parking brake system based on air pressure braking, it is characterized in that, comprising service brake unit, parking braking unit and vehicle driving-cycle collection and control unit, described vehicle driving-cycle collection and control unit are electrically connected with described service brake unit and described parking braking unit respectively; Wherein, described service brake unit comprises the auxiliary unit of front service brake unit, rear service brake unit and parking more further, wherein, the auxiliary unit of parking is connected with described front service brake unit, rear service brake unit respectively by gas circuit, and is electrically connected with described service brake unit and described parking braking unit.
2. heavy vehicle automatic parking brake system as claimed in claim 1, it is characterised in that,
Described front service brake unit comprises the first gas receiver (42), brake total valve (11), first high speed 3-position-3-way solenoid valve (15) and propons service brake air chamber (17), wherein, first inlet mouth of the total valve of described braking (11) is connected by the air outlet of gas circuit with described first gas receiver (42), its first air outlet is then connected by the inlet mouth of gas circuit with described first high speed 3-position-3-way solenoid valve (15), the air outlet of described first high speed 3-position-3-way solenoid valve (15) is then connected with described propons service brake air chamber (17) by gas circuit,
Described rear service brake unit comprises the 2nd gas receiver (43), the 2nd high speed 3-position-3-way solenoid valve (16) and back axle service brake air chamber (18), wherein, 2nd inlet mouth of the total valve of described braking (11) is connected by the air outlet of gas circuit with described 2nd gas receiver (43), its the 2nd air outlet is then connected by the inlet mouth of gas circuit with described 2nd high speed 3-position-3-way solenoid valve (16), and the air outlet of described 2nd high speed 3-position-3-way solenoid valve (16) is then connected with described back axle service brake air chamber (18) by gas circuit.
3. heavy vehicle automatic parking brake system as claimed in claim 2, it is characterized in that, driving parking relay1 valve (19) it is provided with between the 2nd air outlet of the total valve of described braking (11) and the inlet mouth of described 2nd high speed 3-position-3-way solenoid valve (16), wherein, the control mouth of described driving parking relay1 valve (19) is connected by gas circuit with the 2nd air outlet of the total valve of described braking (11), the inlet mouth of described driving parking relay1 valve (19) is connected by gas circuit with the air outlet of described 2nd gas receiver (43), the air outlet of described driving parking relay1 valve (19) is connected by gas circuit with the inlet mouth of described 2nd high speed 3-position-3-way solenoid valve (16).
4. heavy vehicle automatic parking brake system as claimed in claim 2, it is characterized in that, described parking braking unit comprises hand and stops valve (21), first two-bit triplet normally closed solenoid valve (22) and parking braking air chamber (24), wherein, described hand is stopped the inlet mouth of valve (21) and first or the 2nd gas receiver (42, 43) air outlet is connected by gas circuit, the described hand air outlet of valve (21) of stopping is connected by gas circuit with the inlet mouth of described first two-bit triplet normally closed solenoid valve (22), the air outlet of described first two-bit triplet normally closed solenoid valve (22) is connected with the inlet mouth of described parking braking air chamber (24) passes through gas circuit.
5. heavy vehicle automatic parking brake system as claimed in claim 4, it is characterized in that, it is provided with parking braking relay1 valve (23) between the air outlet and the inlet mouth of described parking braking air chamber (24) of described first two-bit triplet normally closed solenoid valve (22), wherein, the control mouth of described parking braking relay1 valve (23) is connected by gas circuit with the air outlet of described first two-bit triplet normally closed solenoid valve (22), the inlet mouth of described parking braking relay1 valve (23) is connected by gas circuit with the air outlet of described first gas receiver (42), the air outlet of described parking braking relay1 valve (23) is connected by gas circuit with the inlet mouth of described parking braking air chamber (24).
6. heavy vehicle automatic parking brake system as claimed in claim 4, it is characterized in that, described parking braking unit also comprises four-loop protection valve (41), described four-loop protection valve (41) includes an inlet mouth and three air outlets, wherein, the first of described four-loop protection valve (41), 2nd air outlet is respectively with described first, two gas receivers (42, 43) inlet mouth is connected by gas circuit, stop with the described hand inlet mouth of valve (21) of 3rd air outlet is connected by gas circuit, the inlet mouth of described loop protection valve (41) is connected with then air outlet with air compressor.
7. heavy vehicle automatic parking brake system as described in claim as any one of claim 3-5, it is characterized in that, the auxiliary unit of described parking comprises the first two-way one-way valve (13), the 2nd two-way one-way valve (12) and the 2nd two-bit triplet normally closed solenoid valve (14); Wherein, the inlet mouth of described 2nd two-bit triplet normally closed solenoid valve (14) is connected by gas circuit with the air outlet of described first gas receiver (43); Two inlet mouths of described first two-way one-way valve (13) are connected by gas circuit with the described air outlet of the 2nd two-bit triplet normally closed solenoid valve (14) and the first air outlet of the total valve of described braking (11) respectively, the air outlet of described first two-way one-way valve (13) then inlet mouth with described first high speed 3-position-3-way solenoid valve (15) be connected by gas circuit; Two inlet mouths of described 2nd two-way one-way valve (12) are connected by gas circuit with the described air outlet of the 2nd two-bit triplet normally closed solenoid valve (14) and the 2nd air outlet of the total valve of described braking (11) respectively, the air outlet of described 2nd two-way one-way valve (12) then control mouth with described driving parking relay1 valve (19) be connected by gas circuit.
8. heavy vehicle automatic parking brake system as claimed in claim 7, it is characterized in that, described vehicle driving-cycle collection and control unit comprise automatic parking controller (31), automatic parking function system selector switch (32), engine CAN bus and vehicle condition information sensor group, wherein, described vehicle condition information sensor group comprises: ramp sensor (33), clutch position sensor (34), speed of a motor vehicle signal pick-off (35), baroceptor (36), described automatic parking function system selector switch (32), each sensor included by described engine CAN bus and described vehicle condition information sensor group is connected with the signal input terminus of described automatic parking controller (31) respectively, wherein, described automatic parking function system selector switch (32) is in order to On/Off automatic parking function.
9. heavy vehicle automatic parking brake system as claimed in claim 8, it is characterized in that, described baroceptor (36) is arranged in the gas circuit between the first inlet mouth of the total valve of described braking (11) and the air outlet of described first gas receiver and in gas circuit between the 2nd inlet mouth of the total valve of described braking (11) and the air outlet of described 2nd gas receiver respectively.
10. heavy vehicle automatic parking brake system as claimed in claim 8 or 9, it is characterized in that, described vehicle driving-cycle collection and control unit also comprise the status indicator lamp (37) and trouble lamp (38) that are electrically connected respectively with the signal output terminal of described automatic parking controller (31), wherein, when the automatic parking function of described heavy vehicle automatic parking brake system is opened, described status indicator lamp (37) is lighted, on the contrary, when the automatic parking function of described heavy vehicle automatic parking brake system is closed, described status indicator lamp (37) extinguishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620058680.7U CN205292608U (en) | 2016-01-21 | 2016-01-21 | Automatic parking braking system of heavy vehicle based on air pressure brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620058680.7U CN205292608U (en) | 2016-01-21 | 2016-01-21 | Automatic parking braking system of heavy vehicle based on air pressure brake |
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| Publication Number | Publication Date |
|---|---|
| CN205292608U true CN205292608U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620058680.7U Expired - Fee Related CN205292608U (en) | 2016-01-21 | 2016-01-21 | Automatic parking braking system of heavy vehicle based on air pressure brake |
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| CN (1) | CN205292608U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106080554A (en) * | 2016-08-16 | 2016-11-09 | 南京金龙客车制造有限公司 | A kind of passenger vehicle automatic parking control system |
| CN109367528A (en) * | 2018-08-28 | 2019-02-22 | 南京金龙客车制造有限公司 | A kind of automatic parking system and its control method |
| CN109532808A (en) * | 2018-11-05 | 2019-03-29 | 东风襄阳旅行车有限公司 | A kind of electronic parking system and method based on CAN bus control |
| CN110027633A (en) * | 2019-04-29 | 2019-07-19 | 南京航空航天大学 | A kind of Anti-side-turning device and control method of air-pressure brake heavy goods vehicles |
| CN110103906A (en) * | 2019-05-22 | 2019-08-09 | 徐工集团工程机械股份有限公司道路机械分公司 | A kind of brake apparatus and braking method of mechanical drive road roller |
| CN111086493A (en) * | 2020-02-28 | 2020-05-01 | 株洲华越轨道科技有限公司 | Air circuit braking system with automatic braking function |
| CN111873977A (en) * | 2020-07-22 | 2020-11-03 | 中国重汽集团济南动力有限公司 | Pneumatic braking system of heavy-duty truck |
| CN112937539A (en) * | 2021-04-01 | 2021-06-11 | 中国重汽集团济南动力有限公司 | Parking brake control system and method and four-loop protection valve |
| CN113492814A (en) * | 2020-04-02 | 2021-10-12 | 陕西重型汽车有限公司 | Commercial vehicle and electronic parking braking system thereof |
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| CN106080554A (en) * | 2016-08-16 | 2016-11-09 | 南京金龙客车制造有限公司 | A kind of passenger vehicle automatic parking control system |
| CN109367528A (en) * | 2018-08-28 | 2019-02-22 | 南京金龙客车制造有限公司 | A kind of automatic parking system and its control method |
| CN109532808A (en) * | 2018-11-05 | 2019-03-29 | 东风襄阳旅行车有限公司 | A kind of electronic parking system and method based on CAN bus control |
| CN109532808B (en) * | 2018-11-05 | 2020-11-06 | 东风襄阳旅行车有限公司 | Electronic parking system and method based on CAN bus control |
| CN110027633A (en) * | 2019-04-29 | 2019-07-19 | 南京航空航天大学 | A kind of Anti-side-turning device and control method of air-pressure brake heavy goods vehicles |
| CN110027633B (en) * | 2019-04-29 | 2023-07-11 | 南京航空航天大学 | Rollover prevention device of pneumatic braking heavy vehicle and control method |
| CN110103906A (en) * | 2019-05-22 | 2019-08-09 | 徐工集团工程机械股份有限公司道路机械分公司 | A kind of brake apparatus and braking method of mechanical drive road roller |
| CN111086493A (en) * | 2020-02-28 | 2020-05-01 | 株洲华越轨道科技有限公司 | Air circuit braking system with automatic braking function |
| CN113492814A (en) * | 2020-04-02 | 2021-10-12 | 陕西重型汽车有限公司 | Commercial vehicle and electronic parking braking system thereof |
| CN111873977A (en) * | 2020-07-22 | 2020-11-03 | 中国重汽集团济南动力有限公司 | Pneumatic braking system of heavy-duty truck |
| CN111873977B (en) * | 2020-07-22 | 2021-10-08 | 中国重汽集团济南动力有限公司 | Pneumatic braking system of heavy-duty truck |
| CN112937539A (en) * | 2021-04-01 | 2021-06-11 | 中国重汽集团济南动力有限公司 | Parking brake control system and method and four-loop protection valve |
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