CN204915668U - Sluggish compensation arrangement of commercial automatically controlled braking of semitrailer closed loop - Google Patents
Sluggish compensation arrangement of commercial automatically controlled braking of semitrailer closed loop Download PDFInfo
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- CN204915668U CN204915668U CN201520666713.1U CN201520666713U CN204915668U CN 204915668 U CN204915668 U CN 204915668U CN 201520666713 U CN201520666713 U CN 201520666713U CN 204915668 U CN204915668 U CN 204915668U
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Abstract
The utility model discloses a sluggish compensation arrangement of commercial automatically controlled braking of semitrailer closed loop lags behind and problem to trailer severity of braking out -of -control for overcoming the braking of road train when braking trailer, and it includes tractor mechanical part, trailer mechanical part and controller (11), tractor mechanical part includes a pressure sensor (3), trailer mechanical part includes first solenoid valve (4), the 2nd pressure sensor (6) and second solenoid valve (7), controller (11) are including AD conversion chip (24), first relay (30) and second relay (31), 3 ports and 26 ports of AD conversion chip (24) of a pressure sensor (3) are connected, and 3 ports and 27 ports of AD conversion chip (24) of the 2nd pressure sensor (6) are connected, and 5 ports of first solenoid valve (4) and first relay (30) are connected, and 5 ports of second solenoid valve (7) and second relay (31) are connected.
Description
Technical field
The utility model relates to a kind of automatically controlled following gas pressure braking hysteresis compensation device, and or rather, the utility model relates to a kind of commercial superimposed trailer close loop electric control braking hysteresis compensation device.
Background technology
In the brake system of train-type vehicle, the drive of high-pressure gas that braking maneuver due to trailer produces when being and being braked by main car, the flowing of this gas in pilot piping need consume the regular hour, therefore the braking time of train-type vehicle rear trailer when braking can lag behind main car, there will be in braking procedure and do not mate the dangerous working conditions such as caused vehicle folding, whipping, sideslip due to master, trailer braking protection valve, axle load transfer when simultaneously the braking retardation of trailer can aggravate train-type vehicle braking and trailer, to the impulsive force of main car, make tractor tyre serious wear.
For this problem, Chinese patent bulletin (cloth) number is CN104118415A, bulletin (cloth) day is on August 5th, 2014, denomination of invention is " trailer compression air brake hysteresis compensation device ", a set of brake pedal detector switch signal and stoplight stop lamp signal of utilizing is proposed to control the device of superimposed trailer braking in this case, this device can shorten the delay time of superimposed trailer braking, but the rate of braking of uncontrollable trailer, namely no matter main car is with how intensity enforcement braking, and trailer all can implement braking with its maximum rate of braking.
Summary of the invention
Technical problem to be solved in the utility model be overcome trailer braking protection valve when prior art exists train-type vehicle braking delayed with to the uncontrollable problem of trailer braking protection valve intensity, provide a kind of commercial superimposed trailer close loop electric control braking hysteresis compensation device.
For solving the problems of the technologies described above, the utility model adopts following technical scheme to realize: described commercial superimposed trailer close loop electric control braking hysteresis compensation device is made up of mechanics and controller, and mechanics is divided into again tractor truck mechanics and trailer mechanics.
Described tractor truck mechanics comprises the first pressure sensor;
Described trailer mechanics comprises the first electromagnetic valve, the second pressure sensor and the second electromagnetic valve;
Described controller comprises A/D conversion chip, the first relay and the second relay;
Signal output port i.e. 3 ports of the first pressure sensor are connected by 26 ports of wire with the A/D conversion chip in controller, signal output port i.e. 3 ports of the second pressure sensor are connected with 27 ports of A/D conversion chip by wire, the signal input part of the first electromagnetic valve and 5 port electrical connections of the first relay, the signal input part of the second electromagnetic valve and 5 port electrical connections of the second relay.
Tractor truck mechanics described in technical scheme also comprises number one threeway, the first pneumatic line and the second pneumatic line;
Described number one threeway is fixed on the vehicle frame of tractor truck, be arranged in the control gas port place of the trailer valve of former car brake system, the right-hand member of the first pneumatic line is connected by the left port of adapter substitute with number one threeway, and the left end of the second pneumatic line is connected by the right output port of adapter substitute with number one threeway; First pressure sensor is connected with the 3rd port threads of number one threeway by its bottom, the left end of the first pneumatic line is connected with the control gas delivery port of the brake activation valve in former car brake system, and the right-hand member of the second pneumatic line is connected with the control gas port of the trailer valve in former car brake system.
Trailer mechanics described in technical scheme also comprises the 3rd pneumatic line, check valve, the 4th pneumatic line, No. second threeway, the 5th pneumatic line, the 6th pneumatic line, No. three threeway, the 7th pneumatic line, No. four threeway and the 8th pneumatic line, the first described electromagnetic valve, the second pressure sensor, the second electromagnetic valve and check valve are fixed on Trailer type frame for use in vehicle, the left end of check valve is connected with the right-hand member of the 3rd pneumatic line, the right-hand member of check valve is connected with the left end of the 4th pneumatic line, the left end of the 3rd pneumatic line is connected with the control gas delivery port of the trailer valve in former car brake system, the right-hand member of the 4th pneumatic line is connected with the left port of No. second threeway, the air receiver be positioned on trailer is connected with the upper end of the first electromagnetic valve by the 5th pneumatic line, first electromagnetic valve is connected with the 3rd port threads of No. second threeway by its bottom, second threeway right output port is connected with the left end of the 6th pneumatic line, the right-hand member of the 6th pneumatic line is connected with the left port of No. three threeway, second pressure sensor is connected with the 3rd port threads of No. three threeway by its end, the right output port of No. three threeway is connected with the 7th pneumatic line left end, the right-hand member of the 7th pneumatic line is connected with the left port of No. four threeway, second electromagnetic valve is connected with the 3rd port threads of No. four threeway by its end, the right-hand member of No. four threeway is connected with the control gas port of the emergency relay valve in former car brake system by the 8th pneumatic line.
Controller described in technical scheme also comprises micro controller system, phase inverter, the second photoelectrical coupler, the first photoelectrical coupler, vehicle power, power-switching circuit, reset circuit, clock circuit and enforcement division parallel circuit.9 ports of micro controller system are electrically connected with the one end of the resistance R1 in the reset circuit of micro controller system, 18 ports of micro controller system are electrically connected with one end of electric capacity C3 with the electric capacity C2 in the clock circuit of micro controller system successively with 19 ports, 3 ports electrical connections of the integrated voltage-stabilized chip in 29 ports of micro controller system and power-switching circuit, 1 port of the integrated voltage-stabilized chip in power-switching circuit and 2 ports of the first pressure sensor, 2 ports of the second pressure sensor, vehicle power, 3 ports of the first relay in enforcement division parallel circuit are electrically connected with 3 ports of the second relay in enforcement division parallel circuit, 1 port of the first photoelectrical coupler in enforcement division parallel circuit is electrically connected with 4 ports with 5 ports of micro controller system successively with 1 port of the second photoelectrical coupler in enforcement division parallel circuit, 10 ports of micro controller system, 30 ports, 39 ports, 38 ports, 37 ports, 36 ports, 35 ports, 34 ports, 33 ports, 32 ports, 26 ports and 24 ports successively with 6 ports of A/D conversion chip, 10 ports, 21 ports, 20 ports, 19 ports, 18 ports, 8 ports, 15 ports, 14 ports, 17 ports, 9 ports are electrically connected with 25 ports, and 12 ports of micro controller system are electrically connected with 7 ports of A/D conversion chip by phase inverter.
The model of the micro controller system described in technical scheme is STC89C52, the model of integrated voltage-stabilized chip is CW7805, the model of the first pressure sensor and the second pressure sensor is all BST6600, the model of the first electromagnetic valve and the second electromagnetic valve is all KX52310-08, the model of the first photoelectrical coupler and the second photoelectrical coupler is all GD-310, the model of the first relay and the second relay is all JQX-13F, and the model of A/D conversion chip is ADC0809.
Power-switching circuit described in technical scheme comprises integrated voltage-stabilized chip, vehicle power, electric capacity C4 and electric capacity C5; 1 port of described integrated voltage-stabilized chip simultaneously and vehicle power be electrically connected with the positive pole of electric capacity, 2 ports of integrated voltage-stabilized chip are connected with the negative electricity of electric capacity C5 with vehicle body, electric capacity C4 simultaneously, the positive pole of electric capacity C5 is electrically connected with 3 ports of integrated voltage-stabilized chip, and the positive pole of electric capacity C4 and 1 port of integrated voltage-stabilized chip are electrically connected with vehicle power.
Reset circuit described in technical scheme comprises switch, electric capacity C1, resistance R1 and resistance R2;
One end electrical connection of one end of electric capacity C1, one end of resistance R2 and resistance R1, it is ground connection that the other end of resistance R2 is connected with vehicle body, the other end of resistance R1 is electrically connected with one end of switch, the other end of switch is electrically connected with the other end of electric capacity C1, and the other end of switch is also electrically connected with 3 ports of integrated voltage-stabilized chip.
Clock circuit described in technical scheme comprises electric capacity C3, electric capacity C2 and crystal oscillator; One end of electric capacity C2 is electrically connected with 18 ports of one end of crystal oscillator and micro controller system, and one end of electric capacity C3 is electrically connected with 19 ports of the other end of crystal oscillator and micro controller system, and electric capacity C2 is electrically connected i.e. ground connection with the other end of electric capacity C3 is same with vehicle body.
Enforcement division parallel circuit described in technical scheme also comprises the first relay, the second relay, the first electromagnetic valve and the second electromagnetic valve; 3 ports of the first relay in enforcement division parallel circuit and the second relay with and vehicle power be electrically connected, 2 ports of the first relay and the second relay and 4 ports simultaneously and vehicle body to be electrically connected be ground connection, first relay is electrically connected with 3 ports of the second photoelectrical coupler with 1 port successively with the first photoelectrical coupler of the second relay, 4 ports of the first photoelectrical coupler and the second photoelectrical coupler simultaneously and vehicle body be electrically connected i.e. ground connection, the while of 2 ports of the first photoelectrical coupler with the second photoelectrical coupler and vehicle body to be electrically connected be ground connection.
Compared with prior art the beneficial effects of the utility model are:
1. commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model passes through, with the traditional gas control of automatically controlled replacement, significantly to decrease the driving time of trailer braking protection valve, significantly can improve the hysteresis phenomenon of trailer braking protection valve.
2. commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model well can incorporate the brake system of former car, and the brake system energy well collaborative work with former car, when compensating device lost efficacy, can not affect the function of the brake system of former car.
3. commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model adopts closed loop control, the servo antrol of double trailer braking protection valve can be realized, the braking force of main car and trailer is made to keep relative consistent, superimposed trailer pulling and impact effect tractor truck when can reduce braking.
4. commercial superimposed trailer close loop electric control braking hysteresis compensation apparatus structure described in the utility model is simple, and be convenient to install, cost is lower, and only needs to make minor modifications to former car brake system, therefore it has good market outlook.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described:
Fig. 1 is the axonometric projection graph of commercial superimposed trailer close loop electric control braking hysteresis compensation apparatus structure composition described in the utility model.
Fig. 2 is the schematic diagram of Control system architecture composition in commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model.
Fig. 3 is micro controller system and A/D conversion chip connection diagram in commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model.
Fig. 4 is the structure principle chart of power-switching circuit in commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model.
Fig. 5 is the structure principle chart of the reset circuit of micro controller system in commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model.
Fig. 6 is the structure principle chart of the clock circuit of micro controller system in commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model.
Fig. 7 is the enforcement division parallel circuit structure principle chart in commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model.
Fig. 8 is the control flow block diagram of commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model.
In figure: 1. the first pneumatic line, 2. number one threeway (internal thread), 3. the first pressure sensor, 4. the first electromagnetic valve, 5. the 5th pneumatic line, 6. the second pressure sensor, 7. the second electromagnetic valve, 8. wire, 9. the 8th pneumatic line, 10. No. four threeway (outer silk), 11. controllers, 12. the 7th pneumatic lines, 13. No. three threeways (internal thread), 14. the 6th pneumatic lines, 15. No. second threeways (outer silk), 16, 4th pneumatic line, 17. check valves, 18. the 3rd pneumatic lines, 19. second pneumatic lines, 20. switches, 23. micro controller systems, 24.A/D conversion chip, 25. integrated voltage-stabilized chips, 27. vehicle bodies, 29. vehicle powers, 30. first relays, 31. second relays, 32. second photoelectrical couplers, 33. first photoelectrical couplers, 34. crystal oscillators, 38. phase inverters.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is explained in detail:
Consult Fig. 1 and Fig. 2, commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model is divided into mechanics and controller 11, and wherein mechanics is divided into again tractor truck mechanics and trailer mechanics.
Described tractor truck mechanics by model be first pressure sensor 3 of BST6600, number one threeway 2, first pneumatic line 1 and the second pneumatic line 19 form.
Described trailer mechanics is made up of the second electromagnetic valve 7 that the 3rd pneumatic line 18, check valve 17,16, No. second threeway 15 of the 4th pneumatic line, model are first electromagnetic valve 4 of KX52310-08, the 5th pneumatic line 5, the 6th pneumatic line 14, No. three threeway 13, model be second pressure sensor 6 of BST6600, the 7th pneumatic line 12, No. four threeway 10, model are KX52310-08 and the 8th pneumatic line 9.
Namely described controller 11 is the micro controller system 23 of STC89C52 by model, model is the A/D conversion chip 24 of ADC0809, model is the integrated voltage-stabilized chip 25 of CW7805, phase inverter 38, model is second photoelectrical coupler 32 of GD-310, model is first photoelectrical coupler 33 of GD-310, the vehicle power 29 of+24V, model is first relay 30 of JQX-13F, model is second relay 31 of JQX-13F, crystal oscillator 34, resistance R1, resistance R2, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4 and electric capacity C5 forms.
The brake system of former car is by the brake activation valve be positioned on tractor truck the braking maneuver of tractor truck (be used for drive), trailer valve (by emergency relay valve input control gas thus drive the braking maneuver of superimposed trailer) and be positioned at the compositions such as emergency relay valve (controlled gas effect is used for controlling the braking of superimposed trailer) on superimposed trailer, its principle of work is: when chaufeur steps on brake pedal, brake activation valve is opened, high pressure gas in tractor truck air receiver enter the control gas port of tractor truck compressed air brake cylinder and trailer valve respectively by brake activation valve, thus realize the braking of tractor truck and open trailer valve, high pressure gas now in air receiver knows from experience the control gas port being arrived the emergency relay valve be positioned on tractor truck by trailer valve, thus open emergency relay valve, realize the braking of superimposed trailer.
Number one threeway 2 in described tractor truck mechanics is fixed on the vehicle frame of main car, be arranged in the control gas port place of the trailer valve of former car brake system, the right-hand member of the first pneumatic line 1, the left end of the second pneumatic line 19 are all connected with the left and right mouth of number one threeway 2 by adapter substitute; First pressure sensor 3 is connected with number one threeway 2 by the outside thread of its bottom, be used for detecting the force value that this place controls gas, another (left side) end of the first pneumatic line 1 is connected with the control gas delivery port of the brake activation valve in former car brake system, and another (right side) end of the second pneumatic line 19 is connected to the control gas port of trailer valve.
The first electromagnetic valve 4 in described trailer mechanics, second electromagnetic valve 7, check valve 17 and the second pressure sensor 6 are fixed on Trailer type frame for use in vehicle, wherein the left end of check valve 17 is linked in the control gas circuit of the emergency relay valve in former car brake system by the 3rd pneumatic line 18 and the 4th pneumatic line 16, the other end of the 3rd pneumatic line 18 is connected with the control gas delivery port of trailer valve, another (right side) end of the 4th pneumatic line 16 is connected with the left end of No. second threeway 15, the high pressure gas that check valve 17 prevents trailer air receiver from outputting to emergency relay valve control gas port while ensureing the high pressure gas physical efficiency arrival emergency relay valve controller mouth that trailer valve exports oppositely flow into trailer valve place, trailer air receiver is connected with the first electromagnetic valve 4 by the 5th pneumatic line 5, first electromagnetic valve 4 is connected with No. second threeway 15 by the negative thread of its end, No. second threeway 15 is positioned in the control gas circuit of emergency relay valve, its two other (left, right) port is connected with the 6th pneumatic line 14 with the 4th pneumatic line 16 respectively, second pressure sensor 6 is connected with No. three threeway 13 by the outside thread of its end, No. three threeway 13 is positioned at the control gas port place of emergency relay valve and is connected in the control gas circuit of emergency relay valve by the 6th pneumatic line 14 and the 7th pneumatic line 12, second electromagnetic valve 7 is connected with No. four threeway 10 by the negative thread of its end, another port communicates with air, one (left side) end of No. four threeway 10 is connected with the 7th pneumatic line 12, another (right side) end of No. four threeway 10 is connected with the control gas port of emergency relay valve by the 8th pneumatic line 9.Electromagnetic valve 4 is connected with controller 11 by wire 8 with pressure sensor 6 with electromagnetic valve 7 and pressure sensor 3.
Controller 11 includes vehicle power 29, micro controller system 23, A/D conversion chip 24, phase inverter 38, the reset circuit of micro controller system, the clock circuit of micro controller system, the second photoelectrical coupler 32, first photoelectrical coupler 33, first relay 30, second relay 31, power-switching circuit and enforcement division parallel circuit.
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Consult Fig. 3, micro controller system 23 controls the clock frequency of A/D conversion chip 24 by pin ALE and pin P, analogue to digital conversion is started by pin P3.0 and pin RXD control A/D conversion chip 24, send interrupt request by pin EOC and phase inverter 38 to micro controller system 23 after A/D conversion chip 24 signal converts, after micro controller system 23 responds interrupt request, can receive by pin AD0 ~ AD7 the data exported from A/D conversion chip 24 output pin OUT1 ~ OUT8.
Consult Fig. 4, described power-switching circuit by model be the integrated voltage-stabilized chip 25 of CW7805, electric capacity C4, electric capacity C5, vehicle body 27 and vehicle power 29 form;
Described model is that 1 port of the integrated voltage-stabilized chip 25 of CW7805 and vehicle power 29 are electrically connected with the positive pole of electric capacity C4, model is that 3 ports of the integrated voltage-stabilized chip 25 of CW7805 and VCC mouth are electrically connected with the positive pole of electric capacity C5, and the negative pole of electric capacity C4 and electric capacity C5 is connected with vehicle body 27 i.e. ground connection.
+ 24V the photovoltaic conversion of vehicle power 29 can be become+5V voltage by described power-switching circuit, is used for powering to each chip in controller 11 or circuit.
Consult Fig. 5, described reset circuit is made up of electric capacity C1, switch 20, resistance R1, resistance R2 and vehicle body 27, and reset circuit is connected with micro controller system 23 by 9 ports of micro controller system 23 and RET pin.When control system breaks down, switch 20 can be pressed, thus make system restart.
Consult Fig. 6, described clock circuit includes electric capacity C2, electric capacity C3, vehicle body 27 and crystal oscillator 34, the clock circuit of micro controller system is electrically connected with micro controller system 23, for micro controller system 23 provides the clock frequency of work by XTAL1 pin i.e. 19 ports of micro controller system and XTAL2 pin i.e. 18 ports.
Consult Fig. 7, described enforcement division parallel circuit is made up of the second photoelectrical coupler 32, first photoelectrical coupler 33, first relay 30, second relay 31, first electromagnetic valve 4, second electromagnetic valve 7 and vehicle power 29.
Enforcement division parallel circuit is connected with micro controller system 23 with pin P1.4 by the pin P1.3 of micro controller system 23.When the pin of micro controller system 23 exports high level, just can make the lumination of light emitting diode of coupled photoelectrical coupler (the second photoelectrical coupler 32, first photoelectrical coupler 33), thus the relay (second relay 31 or the first relay 30) making this photoelectrical coupler (second photoelectrical coupler 32 or the first photoelectrical coupler 33) export high level conducting to be attached thereto, thus make corresponding electromagnetic valve (the first electromagnetic valve 4, second electromagnetic valve 7) conducting.Photoelectrical coupler (second photoelectrical coupler 32 or the first photoelectrical coupler 33) is used for the electromagnetic interference that isolation solenoid valve (first electromagnetic valve 4 and the second electromagnetic valve 7) produces micro controller system 23.
Signal output port i.e. 3 ports of the first pressure sensor 3 are connected by 26 ports of wire with the A/D conversion chip 24 in controller, signal output port i.e. 3 ports of the second pressure sensor 6 are connected with 27 ports of A/D conversion chip 24 by wire, the port one of the first pressure sensor 3 and the second pressure sensor 6 with and vehicle body 27 to be connected be ground connection, port 2 and the vehicle power 29 of the first pressure sensor 3 and the second pressure sensor 6 are electrically connected, the signal input part of the first electromagnetic valve 4 in enforcement division parallel circuit and 5 port electrical connections of the first relay 30, the signal input part of the second electromagnetic valve 7 in enforcement division parallel circuit and 5 port electrical connections of the second relay 31, 3 ports of the first relay 30 and the second relay 31 with and vehicle power 29 be electrically connected, 2 ports of the first relay 30 and 4 ports with and vehicle body 27 to be connected be ground connection, 2 ports of the second relay 31 and 4 ports with and vehicle body 27 to be connected be ground connection, 1 port of the first relay 30 is electrically connected with 3 ports of the first photoelectrical coupler 33, 1 port of the second relay 31 and 3 port electrical connections of the second photoelectrical coupler 32, the second photoelectrical coupler 32 in enforcement division parallel circuit is all connected i.e. ground connection with 2 ports of the first photoelectrical coupler 33 with 4 ports with vehicle body 27, 1 port of the second photoelectrical coupler 32 is electrically connected with 5 ports with 4 ports of micro controller system 23 successively with 1 port of the first photoelectrical coupler 33, 20 ports of micro controller system 23 are connected i.e. ground connection with vehicle body 27, 18 ports of micro controller system 23 are electrically connected with the positive pole of electric capacity C3 with the electric capacity C2 in clock circuit successively with 19 ports, simultaneously 18 ports of micro controller system 23 and 19 ports are also connected in parallel with two interfaces of crystal oscillator 34, it is ground connection that electric capacity C2 is connected with vehicle body 27 with the negative pole of electric capacity C3, the positive pole of the electric capacity C1 in 9 ports of micro controller system 23 and reset circuit, one end of resistance R2 and one end electrical connection of resistance R1, 29 ports of micro controller system 23, 31 ports, 3 ports electrical connections of the integrated voltage-stabilized chip 25 of 40 ports together and in power-switching circuit, 10 ports of micro controller system 23, 30 ports, 39 ports, 38 ports, 37 ports, 36 ports, 35 ports, 34 ports, 33 ports, 32 ports, 26 ports and 24 ports successively with 6 ports of A/D conversion chip 24, 10 ports, 21 ports, 20 ports, 19 ports, 18 ports, 8 ports, 15 ports, 14 ports, 17 ports, 9 ports are electrically connected with 25 ports, 12 ports of micro controller system 23 are electrically connected with 7 ports of A/D conversion chip 24 by phase inverter 38.It is ground connection that the other end of resistance R2 is connected with vehicle body 27, one end of the other end connecting valve 20 of resistance R1, the negative pole of the other end of switch 20 and electric capacity C1 simultaneously and model be that 3 ports of the integrated voltage-stabilized chip 25 of CW7805 are electrically connected, 11 ports of A/D conversion chip 24, 12 ports, 22 ports are electrically connected with 3 ports of integrated voltage-stabilized chip 25 simultaneously, 13 ports of A/D conversion chip 24, 16 ports, 23 ports, 24 ports, it is ground connection that 26 ports are connected with vehicle body 27 simultaneously, 1 port of integrated voltage-stabilized chip 25 simultaneously and vehicle power 29 be electrically connected with the positive pole of electric capacity C4, 2 ports of integrated voltage-stabilized chip 25 are connected with the negative electricity of vehicle body 27 with electric capacity C5 simultaneously, the positive pole of electric capacity C5 is electrically connected with 3 ports of integrated voltage-stabilized chip 25, the positive pole of electric capacity C4 and 1 port of integrated voltage-stabilized chip 25 are electrically connected with vehicle power 29.
Consult Fig. 8, first pressure sensor 3 and the second pressure sensor 6 are periodically to controller 11 input feedback signal, micro controller system 23 exports corresponding signal to control the break-make of the first electromagnetic valve 4 and the second electromagnetic valve 7 by the incoming signal comparing the first pressure sensor 3 and the second pressure sensor 6, thus realizes closed loop control emergency relay valve being controlled to air pressure.Arrange difference DELTA X and can prevent electromagnetic valve because the existence of overshoot and break-make repeatedly, this can improve functional stabilization and its service life of electromagnetic valve.
The principle of work of commercial superimposed trailer close loop electric control braking hysteresis compensation device described in the utility model:
When vehicle needs braking deceleration, chaufeur steps on brake pedal, brake activation valve is opened, high pressure gas in air receiver knows from experience the control gas port being filled into trailer valve by brake activation valve, trailer valve can open its air extractor duct pro rata under the effect controlling gas, and by the 3rd pneumatic line 18, check valve 17, 4th pneumatic line 16, No. second threeway 15, 6th pneumatic line 14, No. three threeway 13, 7th pneumatic line 12, No. four threeway 10 and the 8th pneumatic line 9 control gas port input control gas to the emergency relay valve on trailer, meanwhile, the first pressure sensor 3 being arranged on trailer valve control gas port place also can measure the gas pressure value at this place, and reach data input pin i.e. 26 ports of A/D conversion chip 24, A/D conversion chip 24 can convert this analog signal to 8 bit binary number signals and by the data-out port be connected with micro controller system 23, these data be reached micro controller system 23, micro controller system 23 receives and can export high level by 5 ports after processing this signal thus conducting first relay 30 makes the first electromagnetic valve 4 be opened, high pressure gas now in trailer air receiver is known from experience by the 5th pneumatic line 5, first electromagnetic valve 4, No. second threeway 15, 6th pneumatic line 14, No. three threeway 13, 7th pneumatic line 12, No. four threeway 10 and the 8th pneumatic line 9 are filled into the control gas port of emergency relay valve, thus drive the braking maneuver of superimposed trailer, the high pressure gas that check valve 17 is used for preventing trailer air receiver from outputting to emergency relay valve control gas port oppositely flow into trailer valve place, it can ensure that the high pressure gas that trailer valve exports can arrive emergency relay valve controller mouth simultaneously.When emergency relay valve control gas port has high pressure gas effect, trailer will produce corresponding braking maneuver.Because the gas in trailer air receiver is by the control gas port of extremely short pipeline arrival emergency relay valve, therefore the transmission time of this gas obviously can be less than the transmission time of control gas in pipeline transmitted by trailer valve, therefore this electrical controller can shorten the response time of superimposed trailer braking, alleviates the braking retardation phenomenon of superimposed trailer.
When controlling gas and arriving in former car brake system the control gas port place of the emergency relay valve be positioned on superimposed trailer, the second pressure sensor 6 being arranged on emergency relay valve control gas port can collect the air pressure signal at this place and reach in A/D conversion chip 24 by 27 end place mouths of A/D conversion chip 24 by signal, signal is reached micro controller system 23 by data-out port after converting this signal to digital signal by A/D conversion chip 24, the signal of itself and the first pressure sensor 3 can be compared after micro controller system 23 receives this signal, if this signal is less than the signal of the first pressure sensor 3, and its difference exceedes default Δ X, then 5 ports of micro controller system 23 keep high level, 4 port output low levels of micro controller system 23, thus open the first electromagnetic valve 4 and closed second electromagnetic valve 7, trailer air receiver is made to continue to inflate to the control gas port of emergency relay valve, this can make the atmospheric pressure value at this place raise, the output signal of the second pressure sensor 6 also can increase, when this signal value is with when the difference of the signal of the first pressure sensor 3 is between ± Δ, 4 ports of micro controller system 23 and 5 ports all can output low levels, thus disconnect the first relay 30 and the second relay 31, make the first electromagnetic valve 4 and the second electromagnetic valve 7 all closed, the control air pressure at now emergency relay valve control gas port place and trailer valve control the air pressure of gas port close to equivalent, the rate of braking of trailer is close with tractor truck and remain unchanged.
When chaufeur loosen the brake weaken or brake off time, the atmospheric pressure value at the first pressure sensor 3 place can reduce, its signal value is made to be less than the second pressure sensor 6, and its difference is when exceeding default Δ X, 4 ports of micro controller system 23, 5 ports can export high level and low level respectively, thus closed second relay 31, disconnecting the first relay 30 makes the first electromagnetic valve 4 remain closed and the second electromagnetic valve 7 is opened, so the high pressure gas that emergency relay valve controls gas port place just can pass through the 8th pneumatic line 9, No. four threeway 10 and the second electromagnetic valve 7 are discharged to air thus weaken or remove the braking of trailer.
The control objectives of micro controller system 23 is the output valves making the output valve of the second pressure sensor 6 follow the first pressure sensor 3, namely the atmospheric pressure value allowing emergency relay valve control gas port follows the atmospheric pressure value change that trailer valve controls gas port, and this can make the rate of braking of superimposed trailer keep relative consistent with the rate of braking of tractor truck.Because the high pressure gas in trailer air receiver knows from experience the control gas port that the high pressure gas transmitted prior to trailer valve arrive emergency relay valve, therefore adopt the automatically controlled response time that can shorten trailer braking protection valve, simultaneously when brake off, the control gas of emergency relay valve can by electromagnetic valve 7 but not trailer valve enters air, this can shorten the time of superimposed trailer brake off, weakens the drag interaction of superimposed trailer to tractor truck.In sum, adopt this commercial superimposed trailer braking hysteresis compensation device can shortening the superimposed trailer braking response time, improve its braking sluggish while ensure that the rate of braking of superimposed trailer follows the change of the rate of braking of tractor truck and servo-actuated change.
Claims (9)
1. a commercial superimposed trailer close loop electric control braking hysteresis compensation device, it is characterized in that, described commercial superimposed trailer close loop electric control braking hysteresis compensation device is made up of mechanics and controller (11), and mechanics is divided into again tractor truck mechanics and trailer mechanics;
Described tractor truck mechanics comprises the first pressure sensor (3);
Described trailer mechanics comprises the first electromagnetic valve (4), the second pressure sensor (6) and the second electromagnetic valve (7);
Described controller (11) comprises A/D conversion chip (24), the first relay (30) and the second relay (31);
Signal output port i.e. 3 ports of the first pressure sensor (3) are connected by 26 ports of wire with the A/D conversion chip (24) in controller, signal output port i.e. 3 ports of the second pressure sensor (6) are connected by 27 ports of wire with A/D conversion chip (24), the signal input part of the first electromagnetic valve (4) and 5 port electrical connections of the first relay (30), the signal input part of the second electromagnetic valve (7) and 5 port electrical connections of the second relay (31).
2. according to commercial superimposed trailer close loop electric control braking hysteresis compensation device according to claim 1, it is characterized in that, described tractor truck mechanics also comprises number one threeway (2), the first pneumatic line (1) and the second pneumatic line (19);
Described number one threeway (2) is fixed on the vehicle frame (27) of tractor truck, be arranged in the control gas port place of the trailer valve of former car brake system, the right-hand member of the first pneumatic line (1) is connected by the left port of adapter substitute with number one threeway (2), and the left end of the second pneumatic line (19) is connected by the right output port of adapter substitute with number one threeway (2); First pressure sensor (3) is connected with the 3rd port threads of number one threeway (2) by its bottom, the left end of the first pneumatic line (1) is connected with the control gas delivery port of the brake activation valve in former car brake system, and the right-hand member of the second pneumatic line (19) is connected with the control gas port of the trailer valve in former car brake system.
3. according to commercial superimposed trailer close loop electric control braking hysteresis compensation device according to claim 1, it is characterized in that, described trailer mechanics also comprises the 3rd pneumatic line (18), check valve (17), the 4th pneumatic line (16), No. second threeway (15), the 5th pneumatic line (5), the 6th pneumatic line (14), No. three threeway (13), the 7th pneumatic line (12), No. four threeway (10) and the 8th pneumatic line (9);
Described the first electromagnetic valve (4), the second pressure sensor (6), the second electromagnetic valve (7) and check valve (17) are fixed on Trailer type frame for use in vehicle; the left end of check valve (17) is connected with the right-hand member of the 3rd pneumatic line (18), the right-hand member of check valve (17) is connected with the left end of the 4th pneumatic line (16), the left end of the 3rd pneumatic line (18) is connected with the control gas delivery port of the trailer valve in former car brake system, the right-hand member of the 4th pneumatic line (16) is connected with the left port of No. second threeway (15), the air receiver be positioned on trailer is connected with the upper end of the first electromagnetic valve (4) by the 5th pneumatic line (5), first electromagnetic valve (4) is connected with the 3rd port threads of No. second threeway (15) by its bottom, second threeway (15) right output port is connected with the left end of the 6th pneumatic line (14), the right-hand member of the 6th pneumatic line (14) is connected with the left port of No. three threeway (13), second pressure sensor (6) is connected with the 3rd port threads of No. three threeway (13) by its end, the right output port of No. three threeway (13) is connected with the 7th pneumatic line (12) left end, 7th pneumatic line (12) right-hand member is connected with the left port of No. four threeway (10), second electromagnetic valve (7) is connected with the 3rd port threads of No. four threeway (10) by its end, the right-hand member of No. four threeway (10) is connected with the control gas port of the emergency relay valve in former car brake system by the 8th pneumatic line (9).
4. according to commercial superimposed trailer close loop electric control braking hysteresis compensation device according to claim 1, it is characterized in that, described controller (11) also comprises micro controller system (23), phase inverter (38), the second photoelectrical coupler (32), the first photoelectrical coupler (33), vehicle power (29), power-switching circuit, reset circuit, clock circuit and enforcement division parallel circuit;
9 ports of micro controller system (23) are electrically connected with the one end of the resistance R1 in the reset circuit of micro controller system, 18 ports of micro controller system (23) are electrically connected with the positive pole of electric capacity C3 with the electric capacity C2 in the clock circuit of micro controller system successively with 19 ports, 3 ports electrical connections of the integrated voltage-stabilized chip (25) in 29 ports of micro controller system (23) and power-switching circuit, 1 port of the integrated voltage-stabilized chip (25) in power-switching circuit and 2 ports of the first pressure sensor (3), 2 ports of the second pressure sensor (6), vehicle power (29), 3 ports of the first relay (30) in enforcement division parallel circuit are electrically connected with 3 ports of the second relay (31) in enforcement division parallel circuit, 1 port of the first photoelectrical coupler (33) in enforcement division parallel circuit is electrically connected with 4 ports with 5 ports of micro controller system (23) successively with 1 port of the second photoelectrical coupler (32) in enforcement division parallel circuit, 10 ports of micro controller system (23), 30 ports, 39 ports, 38 ports, 37 ports, 36 ports, 35 ports, 34 ports, 33 ports, 32 ports, 26 ports and 24 ports successively with 6 ports of A/D conversion chip (24), 10 ports, 21 ports, 20 ports, 19 ports, 18 ports, 8 ports, 15 ports, 14 ports, 17 ports, 9 ports are electrically connected with 25 ports, and 12 ports of micro controller system (23) are electrically connected with 7 ports of A/D conversion chip (24) by phase inverter (38).
5. according to commercial superimposed trailer close loop electric control braking hysteresis compensation device according to claim 4, it is characterized in that, the model of described micro controller system (23) is STC89C52, the model of integrated voltage-stabilized chip (25) is CW7805, first pressure sensor (3) is all BST6600 with the model of the second pressure sensor (6), first electromagnetic valve (4) is all KX52310-08 with the model of the second electromagnetic valve (7), first photoelectrical coupler (33) is all GD310 with the model of the second photoelectrical coupler (32), first relay (30) is all JQX-13F with the model of the second relay (31), the model of A/D conversion chip (24) is ADC0809.
6., according to commercial superimposed trailer close loop electric control braking hysteresis compensation device according to claim 4, it is characterized in that, described power-switching circuit comprises integrated voltage-stabilized chip (25), vehicle power (29), electric capacity C4 and electric capacity C5;
1 port of described integrated voltage-stabilized chip (25) simultaneously and vehicle power (29) be electrically connected with the positive pole of electric capacity C4,2 ports of integrated voltage-stabilized chip (25) are connected with the negative electricity of electric capacity C5 with vehicle body (27), electric capacity C4 simultaneously, the positive pole of electric capacity C5 is electrically connected with 3 ports of integrated voltage-stabilized chip (25), and the positive pole of electric capacity C4 and 1 port of integrated voltage-stabilized chip (25) are electrically connected with vehicle power (29).
7., according to commercial superimposed trailer close loop electric control braking hysteresis compensation device according to claim 4, it is characterized in that, described reset circuit comprises switch (20), electric capacity C1, resistance R1 and resistance R2;
One end electrical connection of the positive pole of electric capacity C1, one end of resistance R2 and resistance R1, it is ground connection that the other end of resistance R2 is connected with vehicle body (27), the other end of resistance R1 is electrically connected with one end of switch (20), the other end of switch (20) is connected with the negative electricity of electric capacity C1, and the other end of switch (20) is also electrically connected with 3 ports of integrated voltage-stabilized chip (25).
8., according to commercial superimposed trailer close loop electric control braking hysteresis compensation device according to claim 4, it is characterized in that, described clock circuit comprises electric capacity C3, electric capacity C2 and crystal oscillator (34);
One end of one end of electric capacity C2 and crystal oscillator (34) and 18 port electrical connections of micro controller system (23), one end of electric capacity C3 is electrically connected with 19 ports of the other end of crystal oscillator (34) and micro controller system (23), and it is ground connection that electric capacity C2 is connected with vehicle body (27) with the other end of electric capacity C3.
9. according to commercial superimposed trailer close loop electric control braking hysteresis compensation device according to claim 4, it is characterized in that, described enforcement division parallel circuit also comprises the first relay (30), the second relay (31), the first electromagnetic valve (4) and the second electromagnetic valve (7);
3 ports of the first relay (30) in enforcement division parallel circuit and the second relay (31) with and vehicle power (29) be electrically connected, 2 ports of the first relay (30) and the second relay (31) and 4 ports simultaneously and vehicle body (27) to be electrically connected be ground connection, first relay (30) is electrically connected with 3 ports of the second photoelectrical coupler (32) with 1 port successively with the first photoelectrical coupler (33) of the second relay (31), 4 ports of the first photoelectrical coupler (33) and the second photoelectrical coupler (32) simultaneously and vehicle body (27) to be electrically connected be ground connection, 2 ports of the first photoelectrical coupler (33) and the second photoelectrical coupler (32) simultaneously and vehicle body (27) to be electrically connected be ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520666713.1U CN204915668U (en) | 2015-08-31 | 2015-08-31 | Sluggish compensation arrangement of commercial automatically controlled braking of semitrailer closed loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520666713.1U CN204915668U (en) | 2015-08-31 | 2015-08-31 | Sluggish compensation arrangement of commercial automatically controlled braking of semitrailer closed loop |
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| Publication Number | Publication Date |
|---|---|
| CN204915668U true CN204915668U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520666713.1U Withdrawn - After Issue CN204915668U (en) | 2015-08-31 | 2015-08-31 | Sluggish compensation arrangement of commercial automatically controlled braking of semitrailer closed loop |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437959A (en) * | 2018-05-28 | 2018-08-24 | 徐工集团工程机械股份有限公司科技分公司 | A kind of high-speed loading machine emergency braking system and method with trailer |
-
2015
- 2015-08-31 CN CN201520666713.1U patent/CN204915668U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437959A (en) * | 2018-05-28 | 2018-08-24 | 徐工集团工程机械股份有限公司科技分公司 | A kind of high-speed loading machine emergency braking system and method with trailer |
| CN108437959B (en) * | 2018-05-28 | 2024-01-05 | 徐工集团工程机械股份有限公司科技分公司 | Emergency braking system and method for high-speed loader with trailer |
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