CN103303179B - The power takeoff pneumatic control system that two H that can drive a vehicle power taking handle and using method thereof - Google Patents
The power takeoff pneumatic control system that two H that can drive a vehicle power taking handle and using method thereof Download PDFInfo
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Abstract
The power takeoff pneumatic control system that two H that can drive a vehicle power taking handle, it air tank comprised communicates with the admission port of power takeoff successively after power taking electromagnetic valve, high-grade shielding valve, simultaneously, air tank successively after electromagnetic valve for braking, meta cylinder with after double H valve in the two H control system of odd-side communicate, and the air extractor duct of electromagnetic valve for braking communicates with the control mouth of low-grade location control cock, and the coil of electromagnetic valve for braking is in series with shut off cock; During driving power taking, could power taking when guaranteeing that vehicle is positioned at low-grade location by low-grade location control cock; During force taking of parking, stopped by electromagnetic valve for braking, and closed low-grade location control cock is with conducting power taking electromagnetic valve, thus force taking of parking.The design can not only avoid unexpected lifting phenomenon, and can safety driving power taking, force taking of parking.
Description
Technical field
The present invention relates to a kind of power takeoff device control system of dumping car, the power takeoff pneumatic control system that the two H particularly relating to a kind of power taking of driving a vehicle handle and using method thereof, be specifically applicable to avoid unexpected lifting phenomenon, and can the driving power taking of safety, force taking of parking.
Background technology
At present, domestic normal generation dumping car is unexpected automatic lifting in motion, so that the phenomenon of clobber, and this kind of phenomenon often causes serious traffic accident, causes huge economic loss, even car crash.Although numerous main engine plants and refitting factory all propose different preventive, all fail fundamentally to solve problems.
Chinese patent Authorization Notice No. is CN2837570Y, authorized announcement date is the air-control device that the utility model patent on November 15th, 2006 discloses a kind of hydraulic unloading mechanism of self-unloading vehicle, this air-control device comprises: air tank, maneuvering valve, hydraulic actuating cylinder, change-over valve, fuel tank, power takeoff cylinder and the gear type pump with check valve, this maneuvering valve is a three position four-way directional control valve, there is gas port A, gas port B, gas port P and gas port T, this gas port P is communicated with this air tank, this gas port T is in communication with the outside, this gas port A is communicated with this change-over valve, this gas port B is communicated with this power takeoff cylinder, and, this power takeoff cylinder, this gear type pump, this change-over valve, this hydraulic actuating cylinder and this fuel tank are connected by oil circuit, wherein, a safe manoeuvring valve is also provided with between this air tank and the gas port P of this maneuvering valve.Although this utility model improves its safety used by the mode arranging a safe manoeuvring valve between air tank, maneuvering valve, it still has following defect:
First, the reason of unexpected lifting phenomenon is summarized as maloperation by this utility model, unexpected lifting phenomenon during driving that what thus it solved be only limited to caused by maloperation, in addition, in order to solve maloperation problem, it also abandons driving power taking, force taking of parking can only be realized, thus, it does not fundamentally solve problems, just can not guarantee safe driving power taking yet;
Secondly, this utility model needs between air tank, maneuvering valve, arrange a safe manoeuvring valve, this safe manoeuvring valve not only can increase cost, and the integral layout of parts can be affected, in addition, it only plays a similar double insurance effect, maloperation when travelling can only be prevented, fundamentally can not solve unexpected lifting phenomenon, cost performance is not high, and practicality is lower.
Summary of the invention
The object of the invention is to overcome exist in prior art can not guarantee the defect that safe driving power taking, practicality are lower and problem, provide a kind of and can guarantee safe driving power taking, power takeoff pneumatic control system that two H of driven a vehicle power taking that practicality is higher handle and using method thereof.
For realizing above object, technical solution of the present invention is: the power takeoff pneumatic control system of two H manipulations of power taking of can driving a vehicle, comprise air tank and power takeoff, described air tank communicates with the admission port of power takeoff after power taking electromagnetic valve, the output shaft of power takeoff is connected with gear type pump, and on the coil of power taking electromagnetic valve, be in series with power taking switch;
Described power taking electromagnetic valve communicates with the admission port of power takeoff after low-grade location control cock;
Described air tank successively after electromagnetic valve for braking, meta cylinder with after double H valve gas circuit in the two H control system of odd-side be connected, electromagnetic valve for braking air extractor duct, meta cylinder air inlet all communicate with the control mouth of low-grade location control cock, and are in series with shut off cock on the coil of electromagnetic valve for braking.
The two H control system of described rear odd-side comprises double H valve and limiting valve;
Described air tank communicates through the admission port of electromagnetic valve for braking with meta cylinder, and the high-grade air extractor duct of meta cylinder communicates with double H valve admission port, and the low-grade air extractor duct of meta cylinder communicates with double H valve relief port, and double H valve air extractor duct communicates with air tank after limiting valve.
Described air tank communicates with the admission port of power takeoff successively after power taking electromagnetic valve, low-grade location control cock, high-grade shielding valve, and the coil of high-grade shielding valve all communicates with low-grade air extractor duct, double H valve relief port.
The vehicle one that described power takeoff pneumatic control system is applied has five grades, is respectively 1 grade, 2 grades, 3 grades, 4 grades, 5 grades; Low-grade location in described low-grade location control cock refer to R shelves, 1 grade or 2 grades.
A using method for the power takeoff pneumatic control system of two H manipulations of above-mentioned power taking of driving a vehicle, described using method comprises the following steps:
Driving power taking step: first press power taking switch with conducting power taking electromagnetic valve coil place circuit, the coil of power taking electromagnetic valve obtains electric, power taking electromagnetic valve is opened, again gear is transferred to low-grade location with closed low-grade location control cock, now, pressurized air in air tank enters in the rod chamber of power takeoff control cylinder after power taking electromagnetic valve, the power take-off gear that pressurized air promotes power takeoff is meshed to make power takeoff capable with the power gear in odd-side after change-speed box, the lifting of vehicle is carried out in the output shaft driven gear pump running of capable power takeoff with drive hydraulic system principle, decline with in stop operating, thus realize driving power taking,
Force taking of parking step: first press shut off cock, electromagnetic valve for braking coil place circuit is switched on, the coil of electromagnetic valve for braking obtains electric, electromagnetic valve for braking is opened, now, pressurized air in air tank is successively through electromagnetic valve for braking, double H valve in the two H control system of rear odd-side is entered with mouth in odd-side after open slew device after meta cylinder, connection between transmission shaft, transmission shaft stops operating, vehicle is slack, simultaneously, pressurized air in air tank enters the control mouth of low-grade location control cock with closed low-grade location control cock through electromagnetic valve for braking, press power taking switch again with conducting power taking electromagnetic valve coil place circuit, the coil of power taking electromagnetic valve obtains electric, power taking electromagnetic valve is opened, now, pressurized air in air tank is successively through power taking electromagnetic valve, enter in the rod chamber of power takeoff control cylinder after low-grade location control cock, the power take-off gear that pressurized air promotes power takeoff is meshed to make power takeoff capable with the power gear in odd-side after change-speed box, the lifting of vehicle is carried out in the output shaft driven gear pump running of capable power takeoff with drive hydraulic system principle, decline with in stop operating, thus realize force taking of parking.
In driving power taking step, described low-grade location control cock is controlled closed by horizontal gear level.
Described air tank communicates with the admission port of power takeoff successively after power taking electromagnetic valve, low-grade location control cock, high-grade shielding valve.
Compared with prior art, beneficial effect of the present invention is:
1, between power taking electromagnetic valve, power takeoff, a low-grade location control cock is provided with in the power takeoff pneumatic control system that two H that the present invention can drive a vehicle power taking handle and using method thereof, during use, only has the conducting simultaneously of low-grade location control cock, power taking electromagnetic valve, just can open and supply gas to power takeoff, effectively prevent the unexpected lifting phenomenon caused by power taking faulty switching; And this low-grade location control cock only could close when vehicle is positioned at low-grade location, and automobile can be avoided to be positioned at high tap position, during as change-speed box extension 4 or 5 gear, the automatic lifting phenomenon that the high oil pressure caused causes; In addition, this design solves unexpected lifting phenomenon on the basis maintaining driving power taking.Therefore, the present invention can not only avoid unexpected lifting phenomenon, and driving power taking that can be safe.
2, the air tank in the power takeoff pneumatic control system that the two H that the present invention can drive a vehicle power taking handle and using method thereof successively after electromagnetic valve for braking, meta cylinder with after double H valve gas circuit in odd-side pair H control system be connected, and shut off cock is in series with on the coil of electromagnetic valve for braking, during use, this design by shut off cock conducting electromagnetic valve for braking with the connection in odd-side after open slew device between mouth, transmission shaft, and closed low-grade location control cock, thus realize parking, power taking synchronously, avoid the generation of unexpected lifting phenomenon.Therefore, the driving power taking that the present invention can not only be safe, and force taking of parking that can be safe.
3, be provided with between low-grade location control cock and power takeoff admission port in the power takeoff pneumatic control system that the two H that the present invention can drive a vehicle power taking handle and using method thereof and high-gradely shield valve, this top grade shielding valve can not only mask top grade, make only to realize power taking of driving a vehicle in low-grade district, and power takeoff can be avoided to be communicated with, in case the unexpected lifting phenomenon caused long ventilatory conditions appears in power taking electromagnetic valve or low-grade location control cock during because of fault with direct between low-grade location control cock, power taking electromagnetic valve, air tank.Therefore, the present invention can effectively avoid vehicle to occur unexpected lifting phenomenon in motion.
4, by arranging the mode of a low-grade location control cock between power taking electromagnetic valve, power takeoff in the power takeoff pneumatic control system that the two H that the present invention can drive a vehicle power taking handle and using method thereof, achieve safe driving power taking and force taking of parking, and, if arrange high-grade shielding valve between low-grade location control cock, power takeoff admission port, then safety is stronger, in addition, low-grade location control cock, top grade shield valve, and not only price is lower, and volume is little, the integral layout of parts can not be affected, cost performance is higher, and practicality is stronger.Therefore, the present invention can not only the driving power taking of safety and force taking of parking, and practicality is stronger.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: air tank 1, power takeoff 2, power taking electromagnetic valve 3, power taking switch 4, low-grade location control cock 5, horizontal gear level 51, electromagnetic valve for braking 6, meta cylinder 7, high-grade air extractor duct 71, low-grade air extractor duct 72, double H valve 8, double H valve admission port 81, double H valve air extractor duct 82, double H valve relief port 83, shut off cock 9, limiting valve 11, high-grade shielding valve 13, the two H control system 14 of rear odd-side.
Detailed description of the invention
Illustrate that the present invention is further detailed explanation with detailed description of the invention below in conjunction with accompanying drawing.
See Fig. 1, the power takeoff pneumatic control system that two H that can drive a vehicle power taking handle, comprise air tank 1 and power takeoff 2, described air tank 1 communicates with the admission port of power takeoff 2 after power taking electromagnetic valve 3, the output shaft of power takeoff 2 is connected with gear type pump, and on the coil of power taking electromagnetic valve 3, be in series with power taking switch 4;
Described power taking electromagnetic valve 3 communicates with the admission port of power takeoff 2 after low-grade location control cock 5;
Described air tank 1 successively after electromagnetic valve for braking 6, meta cylinder 7 with after double H valve 8 gas circuit in the two H control system 14 of odd-side be connected, electromagnetic valve for braking 6 air extractor duct, meta cylinder 7 admission port all communicate with the control mouth of low-grade location control cock 5, and be in series with shut off cock 9 on the coils of electromagnetic valve for braking 6.
The two H control system 14 of described rear odd-side comprises double H valve 8 and limiting valve 11;
Described air tank 1 communicates through the admission port of electromagnetic valve for braking 6 with meta cylinder 7, the high-grade air extractor duct 71 of meta cylinder 7 communicates with double H valve admission port 81, the low-grade air extractor duct 72 of meta cylinder 7 communicates with double H valve relief port 83, and double H valve air extractor duct 82 communicates with air tank 1 after limiting valve 11.
Described air tank 1 communicates with the admission port of power takeoff 2 successively after power taking electromagnetic valve 3, low-grade location control cock 5, high-grade shielding valve 13, and the coil of high-grade shielding valve 13 all communicates with low-grade air extractor duct 72, double H valve relief port 83.
The vehicle one that described power takeoff pneumatic control system is applied has five grades, is respectively 1 grade, 2 grades, 3 grades, 4 grades, 5 grades; Low-grade location in described low-grade location control cock 5 refer to R shelves, 1 grade or 2 grades.
A using method for the power takeoff pneumatic control system of two H manipulations of above-mentioned power taking of driving a vehicle, described using method comprises the following steps:
Driving power taking step: first press power taking switch 4 with conducting power taking electromagnetic valve 3 coil place circuit, the coil of power taking electromagnetic valve 3 obtains electric, power taking electromagnetic valve 3 is opened, again gear is transferred to low-grade location with closed low-grade location control cock 5, now, pressurized air in air tank 1 enters in the rod chamber of power takeoff 2 control cylinder after power taking electromagnetic valve 3, the power take-off gear that pressurized air promotes power takeoff 2 is meshed with the power gear in odd-side after change-speed box to make power takeoff 2 capable, the lifting of vehicle is carried out in the output shaft driven gear pump running of capable power takeoff 2 with drive hydraulic system principle, decline with in stop operating, thus realize driving power taking,
Force taking of parking step: first press shut off cock 9, electromagnetic valve for braking 6 coil place circuit is switched on, the coil of electromagnetic valve for braking 6 obtains electric, electromagnetic valve for braking 6 is opened, now, pressurized air in air tank 1 is successively through electromagnetic valve for braking 6, double H valve 8 in the two H control system 14 of rear odd-side is entered with mouth in odd-side after open slew device after meta cylinder 7, connection between transmission shaft, transmission shaft stops operating, vehicle is slack, simultaneously, pressurized air in air tank 1 enters the control mouth of low-grade location control cock 5 with closed low-grade location control cock 5 through electromagnetic valve for braking 6, press power taking switch 4 again with conducting power taking electromagnetic valve 3 coil place circuit, the coil of power taking electromagnetic valve 3 obtains electric, power taking electromagnetic valve 3 is opened, now, pressurized air in air tank 1 is successively through power taking electromagnetic valve 3, enter in the rod chamber of power takeoff 2 control cylinder after low-grade location control cock 5, the power take-off gear that pressurized air promotes power takeoff 2 is meshed with the power gear in odd-side after change-speed box to make power takeoff 2 capable, the lifting of vehicle is carried out in the output shaft driven gear pump running of capable power takeoff 2 with drive hydraulic system principle, decline with in stop operating, thus realize force taking of parking.
In driving power taking step, described low-grade location control cock 5 is controlled to close by horizontal gear level 51.
Described air tank 1 communicates with the admission port of power takeoff 2 successively after power taking electromagnetic valve 3, low-grade location control cock 5, high-grade shielding valve 13.
Principle of the present invention is described as follows:
Domesticly engineering dump truck automatic lifting when running at high speed often can occur, the phenomenon of clobber, it, often along with serious traffic accident, even car crash, causes tremendous economic to lose.Described fault car many couplings two layshaft gearbox, from the power taking of rear odd-side tween drive shaft, and be responsible for controlling power taking electromagnetic valve from the power takeoff device control system of rear odd-side tween drive shaft power taking many employings power taking switch, to realize power taking of driving a vehicle, and each gear of vehicle can realize driving power taking function.But there is potential safety hazard in this kind of system:
The hydraulic efficiency pressure system of this system support (control vehicle lifting, decline, in stop the hydraulic efficiency pressure system that operates) in hydraulic tubing longer and latus rectum is less again, when power takeoff rotating speed is higher (when change-speed box hangs 4,5 gear), even if lifting control handle is in lowering position, oil cylinder also can jack-up automatically, thus there is unexpected lifting phenomenon, potential safety hazard is very large; In addition, the power takeoff in existing control system is directly connected with power takeoff electromagnetic valve, air tank, once power takeoff electromagnetic valve et out of order, as power taking switch crosstalk etc., power takeoff just there will be long ventilatory conditions, now, power takeoff will automatic operation, the easily unexpected lifting phenomenon of generation.
For above defect, the solution announced is a lot, but all can not guarantee safe driving power taking, force taking of parking, even some technical scheme with power taking of abandoning driving a vehicle for cost and avoid the generation of unexpected lifting phenomenon, and the present invention solves above defect from the control of propulsion source (power takeoff), the generation of unexpected lifting phenomenon can not only be avoided, and can safety driving power taking, force taking of parking, cost performance is very high, and practicality is very strong.
Embodiment 1:
A kind of power takeoff pneumatic control system of two H manipulations of power taking of driving a vehicle, comprise air tank 1, power takeoff 2, power taking electromagnetic valve 3, power taking switch 4, low-grade location control cock 5, electromagnetic valve for braking 6, meta cylinder 7, shut off cock 9, high-grade shielding valve 13 H control system 14 two with rear odd-side, the two H control system 14 of this rear odd-side comprises double H valve 8 and limiting valve 11;
Described air tank 1 communicates with the admission port of power takeoff 2 (admission port of power takeoff 2 communicates with the rod chamber of the control cylinder of power takeoff 2) successively after power taking electromagnetic valve 3, low-grade location control cock 5, high-grade shielding valve 13, and the output shaft of power takeoff 2 is connected with gear type pump; Described air tank 1 controls mouth through electromagnetic valve for braking 6 and low-grade location control cock 5, meta cylinder 7 admission port communicates, the high-grade air extractor duct 71 of meta cylinder 7 communicates with double H valve admission port 81, the low-grade air extractor duct 72 of meta cylinder 7 communicates with double H valve relief port 83, and double H valve air extractor duct 82 communicates with air tank 1 after limiting valve 11;
Described power taking electromagnetic valve 3 coil is in series with a power taking switch 4, the coil of described electromagnetic valve for braking 6 is in series with a shut off cock 9; The coil of described top grade shielding valve 13 all communicates with low-grade air extractor duct 72, double H valve relief port 83 (the high-grade folding shielding valve 13 leans on the gas of low-grade air extractor duct 72 to control, and has during gas and connects, disconnect when dying by spring in pipeline);
The vehicle one that described power takeoff pneumatic control system is applied has five grades, is respectively 1 grade, 2 grades, 3 grades, 4 grades, 5 grades; Low-grade location in described low-grade location control cock 5 refer to R shelves, 1 grade or 2 grades.
A using method for the power takeoff pneumatic control system of two H manipulations of above-mentioned power taking of driving a vehicle, described using method comprises the following steps:
Driving power taking step: first press power taking switch 4 with conducting power taking electromagnetic valve 3 coil place circuit, the coil of power taking electromagnetic valve 3 obtains electric, power taking electromagnetic valve 3 is opened, again gear is transferred to low-grade location to be controlled to close by horizontal gear level 51 with low-grade location control cock 5 described in closed low-grade location control cock 5(), now, pressurized air in air tank 1 is successively through power taking electromagnetic valve 3, low-grade location control cock 5, enter in the rod chamber of power takeoff 2 control cylinder after high-grade shielding valve 13, the power take-off gear that pressurized air promotes power takeoff 2 is meshed with the power gear in odd-side after change-speed box to make power takeoff 2 capable, the lifting of vehicle is carried out in the output shaft driven gear pump running of capable power takeoff 2 with drive hydraulic system principle, decline with in stop operating, thus realize driving power taking,
Force taking of parking step: first press shut off cock 9, electromagnetic valve for braking 6 coil place circuit is switched on, the coil of electromagnetic valve for braking 6 obtains electric, electromagnetic valve for braking 6 is opened, now, pressurized air in air tank 1 is successively through electromagnetic valve for braking 6, double H valve 8 in the two H control system 14 of rear odd-side is entered with mouth in odd-side after open slew device after meta cylinder 7, connection between transmission shaft, transmission shaft stops operating, vehicle is slack, simultaneously, pressurized air in air tank 1 enters the control mouth of low-grade location control cock 5 with closed low-grade location control cock 5 through electromagnetic valve for braking 6, press power taking switch 4 again with conducting power taking electromagnetic valve 3 coil place circuit, the coil of power taking electromagnetic valve 3 obtains electric, power taking electromagnetic valve 3 is opened, now, pressurized air in air tank 1 is successively through power taking electromagnetic valve 3, low-grade location control cock 5, enter in the rod chamber of power takeoff 2 control cylinder after high-grade shielding valve 13, the power take-off gear that pressurized air promotes power takeoff 2 is meshed with the power gear in odd-side after change-speed box to make power takeoff 2 capable, the lifting of vehicle is carried out in the output shaft driven gear pump running of capable power takeoff 2 with drive hydraulic system principle, decline with in stop operating, thus realize force taking of parking.
Claims (7)
1. the power takeoff pneumatic control system that two H that can drive a vehicle power taking handle, comprise air tank (1) and power takeoff (2), described air tank (1) communicates with the admission port of power takeoff (2) after power taking electromagnetic valve (3), the output shaft of power takeoff (2) is connected with gear type pump, and on the coil of power taking electromagnetic valve (3), be in series with power taking switch (4), it is characterized in that:
Described power taking electromagnetic valve (3) communicates with the admission port of power takeoff (2) after low-grade location control cock (5);
Double H valve (8) gas circuit of described air tank (1) successively after electromagnetic valve for braking (6), meta cylinder (7) in H control system (14) two with rear odd-side is connected, electromagnetic valve for braking (6) air extractor duct, meta cylinder (7) admission port all communicate with the control mouth of low-grade location control cock (5), and on the coil of electromagnetic valve for braking (6), be in series with shut off cock (9).
2. the power takeoff pneumatic control system of two H manipulations of power taking of driving a vehicle according to claim 1, is characterized in that:
The two H control system (14) of described rear odd-side comprises double H valve (8) and limiting valve (11);
Described air tank (1) communicates through the admission port of electromagnetic valve for braking (6) with meta cylinder (7), the high-grade air extractor duct (71) of meta cylinder (7) communicates with double H valve admission port (81), the low-grade air extractor duct (72) of meta cylinder (7) communicates with double H valve relief port (83), and double H valve air extractor duct (82) communicates with air tank (1) after limiting valve (11).
3. the power takeoff pneumatic control system of two H manipulations of power taking of driving a vehicle according to claim 2, it is characterized in that: described air tank (1) communicates with the admission port of power takeoff (2) successively after power taking electromagnetic valve (3), low-grade location control cock (5), high-grade shielding valve (13), and the coil of high-grade shielding valve (13) all communicates with low-grade air extractor duct (72), double H valve relief port (83).
4. the power takeoff pneumatic control system of two H manipulations of the driven a vehicle power taking according to claim 1,2 or 3, is characterized in that: the vehicle one that described power takeoff pneumatic control system is applied has five grades, is respectively 1 grade, 2 grades, 3 grades, 4 grades, 5 grades; Low-grade location in described low-grade location control cock (5) refer to R shelves, 1 grade or 2 grades.
5. a using method for the power takeoff pneumatic control system of two H manipulations of power taking of driving a vehicle according to claim 1, is characterized in that described using method comprises the following steps:
Driving power taking step: first press power taking switch (4) with conducting power taking electromagnetic valve (3) coil place circuit, the coil of power taking electromagnetic valve (3) obtains electric, power taking electromagnetic valve (3) is opened, again gear is transferred to low-grade location with closed low-grade location control cock (5), now, pressurized air in air tank (1) enters in the rod chamber of power takeoff (2) control cylinder after power taking electromagnetic valve (3), the power take-off gear that pressurized air promotes power takeoff (2) is meshed with the power gear in odd-side after change-speed box to make power takeoff (2) capable, the lifting of vehicle is carried out in the output shaft driven gear pump running of capable power takeoff (2) with drive hydraulic system principle, decline with in stop operating, thus realize driving power taking,
Force taking of parking step: first press shut off cock (9), electromagnetic valve for braking (6) coil place circuit is switched on, the coil of electromagnetic valve for braking (6) obtains electric, electromagnetic valve for braking (6) is opened, now, pressurized air in air tank (1) is successively through electromagnetic valve for braking (6), double H valve (8) in the two H control system (14) of rear odd-side is entered with mouth in odd-side after open slew device after meta cylinder (7), connection between transmission shaft, transmission shaft stops operating, vehicle is slack, simultaneously, pressurized air in air tank (1) enters the control mouth of low-grade location control cock (5) with closed low-grade location control cock (5) through electromagnetic valve for braking (6), press power taking switch (4) again with conducting power taking electromagnetic valve (3) coil place circuit, the coil of power taking electromagnetic valve (3) obtains electric, power taking electromagnetic valve (3) is opened, now, pressurized air in air tank (1) is successively through power taking electromagnetic valve (3), enter in the rod chamber of power takeoff (2) control cylinder after low-grade location control cock (5), the power take-off gear that pressurized air promotes power takeoff (2) is meshed with the power gear in odd-side after change-speed box to make power takeoff (2) capable, the lifting of vehicle is carried out in the output shaft driven gear pump running of capable power takeoff (2) with drive hydraulic system principle, decline with in stop operating, thus realize force taking of parking.
6. the using method of the power takeoff pneumatic control system of two H manipulations of a kind of power taking of driving a vehicle according to claim 5, is characterized in that:
In driving power taking step, described low-grade location control cock (5) is controlled closed by horizontal gear level (51).
7. the using method of the power takeoff pneumatic control system of two H manipulations of a kind of power taking of driving a vehicle according to claim 5 or 6, is characterized in that: described air tank (1) communicates with the admission port of power takeoff (2) successively after power taking electromagnetic valve (3), low-grade location control cock (5), high-grade shielding valve (13).
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| CN201310221873.0A CN103303179B (en) | 2013-06-06 | 2013-06-06 | The power takeoff pneumatic control system that two H that can drive a vehicle power taking handle and using method thereof |
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| CN201310221873.0A CN103303179B (en) | 2013-06-06 | 2013-06-06 | The power takeoff pneumatic control system that two H that can drive a vehicle power taking handle and using method thereof |
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| CN103303179B true CN103303179B (en) | 2015-08-12 |
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| CN104175936B (en) * | 2014-08-22 | 2016-05-18 | 中国重汽集团成都王牌商用车有限公司 | Prevent the dumper middle container control system of lifting voluntarily of travelling |
| CN108454399B (en) * | 2018-03-30 | 2023-10-20 | 东风商用车有限公司 | Hydraulic and electric control system of power takeoff with clutch and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3833261A (en) * | 1972-03-27 | 1974-09-03 | T Dingler | Dumping accessory for pick-up trucks and the like |
| KR100427336B1 (en) * | 2001-09-26 | 2004-04-14 | 현대자동차주식회사 | Loading system for truck |
| CN2837570Y (en) * | 2005-06-03 | 2006-11-15 | 中集车辆（集团）有限公司 | Pneumatic control device for hydraulic unloading mechanism of self-unloading vehicle |
| CN101306657B (en) * | 2008-06-26 | 2010-06-02 | 中国农业大学 | Pneumatic limiter for body of tipper carriage |
| CN201777137U (en) * | 2010-09-19 | 2011-03-30 | 中国重汽集团济南动力有限公司 | Power takeoff protection device during parking |
| CN203372106U (en) * | 2013-06-06 | 2014-01-01 | 东风汽车公司 | Double-H controlled power takeoff pneumatic control system capable of taking off power while running |
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