CN203372106U - Double-H controlled power takeoff pneumatic control system capable of taking off power while running - Google Patents
Double-H controlled power takeoff pneumatic control system capable of taking off power while running Download PDFInfo
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- CN203372106U CN203372106U CN201320322867.XU CN201320322867U CN203372106U CN 203372106 U CN203372106 U CN 203372106U CN 201320322867 U CN201320322867 U CN 201320322867U CN 203372106 U CN203372106 U CN 203372106U
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Abstract
The utility model relates to a double-H controlled power takeoff pneumatic control system capable of taking off power while running. The double-H controlled power takeoff pneumatic control system comprises an air reservoir, the air reservoir is communicated with an air inlet of a power takeoff through a power takeoff solenoid valve and a high-gear shielding valve sequentially, meanwhile, the air reservoir is communicated with a double-H valve in a back auxiliary carriage double-H control system through a stopping solenoid valve and a middle-position air cylinder sequentially, an air outlet of the stopping solenoid valve is communicated with a control opening of a low-gear control valve, and a stopping switch is connected to a coil of the stopping solenoid valve in series. When the power takeoff is carried out while running, the low-gear control valve guarantees that the power can be taken off only when a vehicle is in a low gear, and when power takeoff is carried out while parking, the vehicle is parked through the stopping solenoid valve, the low-gear control valve is closed to break over the power takeoff solenoid valve, and accordingly power takeoff while parking is achieved. According to the double-H controlled power takeoff pneumatic control system, the suddenly-lifted phenomenon can be avoided, and power takeoff while running and power takeoff while parking can be safely achieved.
Description
Technical field
The utility model relates to a kind of power takeoff device control system of dumping car, relates in particular to a kind of power takeoff pneumatic control system of two H manipulations of the power taking of driving a vehicle, and specifically is applicable to avoid unexpected lifting phenomenon, and driving power taking, force taking of parking that can be safe.
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 tends to cause 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 Granted publication number is CN2837570Y, the utility model patent that Granted publication day is on November 15th, 2006 discloses a kind of air-control device 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 with the gear type pump of 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, also be provided with a safe manoeuvring valve between the gas port P of this air tank and this maneuvering valve.Although this utility model has improved the safety of its use by the mode that a safe manoeuvring valve is set between air tank, maneuvering valve, it still has following defect:
At first, this utility model is summarized as maloperation by the reason of unexpected lifting phenomenon, thereby it solve be only limited to the caused unexpected lifting phenomenon of when driving maloperation, in addition, in order to solve the maloperation problem, it has also abandoned the driving power taking, can only realize force taking of parking, thereby it does not fundamentally solve problems, also just can not guarantee safe driving power taking;
Secondly, this utility model need to arrange a safe manoeuvring valve between air tank, maneuvering valve, this safe manoeuvring valve not only can increase cost, and can affect the integral layout of parts, in addition, it only plays a similar double insurance effect, maloperation in the time of can only preventing to travel, can not fundamentally solve unexpected lifting phenomenon, cost performance is not high, and practicality is lower.
Summary of the invention
The purpose of this utility model be overcome in prior art, exist can not guarantee defect and the problem that safe driving power taking, practicality are lower, the power takeoff pneumatic control system that provides a kind of two H that can guarantee safe driving power taking, driven a vehicle power taking that practicality is higher to handle.
For realizing above purpose, technical solution of the present utility model is: the power takeoff pneumatic control system that two H of the power taking of can driving a vehicle handle, comprise air tank and power takeoff, described air tank communicates with the admission port of power takeoff after the power taking electromagnetic valve, the output shaft of power takeoff is connected with gear type pump, and is in series with the power taking switch on the coil of power taking electromagnetic valve;
Described power taking electromagnetic valve communicates with the admission port of power takeoff after the low gear level control valve;
Described air tank successively after parking electromagnetic valve, 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 gear level control valve, 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 comprise double H valve and limiting valve;
Described air tank communicates with the admission port of meta cylinder through the parking electromagnetic valve, and the high gear air extractor duct of meta cylinder communicates with the double H valve admission port, and the low gear air extractor duct of meta cylinder communicates with the double H valve relief port, and the 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 gear level control valve, high gear shielding valve, and the coil of high gear shielding valve all communicates with low gear air extractor duct, double H valve relief port.
The applied vehicle one of described power takeoff pneumatic control system has five gears, is respectively 1 gear, 2 gears, 3 gears, 4 gears, 5 gears; Low gear in described low gear level control valve refers to R gear, 1 gear or 2 gears.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model can be driven a vehicle in the power takeoff pneumatic control system that the two H of power taking handle and be provided with a low gear level control valve between power taking electromagnetic valve, power takeoff, during use, only have low gear level control valve, the conducting simultaneously of power taking electromagnetic valve, just can open to power takeoff and supply gas, effectively avoid the caused unexpected lifting phenomenon of power taking faulty switching; And this low gear level control valve only could be closed when vehicle is positioned at low gear, can avoid automobile to be positioned at high gear, while as change-speed box, hanging 4 or 5 gear, the automatic lifting phenomenon that the high oil pressure caused causes; In addition, this design is to have solved unexpected lifting phenomenon on the basis that maintains the driving power taking.Therefore, the utility model not only can be avoided unexpected lifting phenomenon, and driving power taking that can be safe.
2, the air tank that the utility model can be driven a vehicle in the power takeoff pneumatic control system that the two H of power taking handle successively after parking electromagnetic valve, meta cylinder with after double H valve gas circuit in odd-side pair H control system be connected, and be in series with shut off cock on the coil of electromagnetic valve for braking, during use, this design by shut off cock conducting electromagnetic valve for braking with the open slew device after the connection between mouth, transmission shaft in odd-side, and closed low gear level control valve, thereby realization is stopped, power taking is synchronous, avoids the generation of unexpected lifting phenomenon.Therefore, the driving power taking that the utility model not only can be safe, and force taking of parking that can be safe.
3, the utility model can be driven a vehicle in the power takeoff pneumatic control system that the two H of power taking handle and is provided with high gear shield valve between low gear level control valve and power takeoff admission port, this high gear shielding valve not only can mask high gear, make and only in the low gear district, could realize the driving power taking, and can avoid direct connection the between power takeoff and low gear level control valve, power taking electromagnetic valve, air tank, the unexpected lifting phenomenon caused while long ventilation situation occurring in case power taking electromagnetic valve or low gear level control valve hinder for some reason.Therefore, the utility model can effectively avoid vehicle unexpected lifting phenomenon to occur in motion.
4, the utility model can be driven a vehicle in the power takeoff pneumatic control system that the two H of power taking handle by the mode of a low gear level control valve is set between power taking electromagnetic valve, power takeoff, safe driving power taking and force taking of parking have been realized, and, if high gear shielding valve is set between low gear level control valve, power takeoff admission port, safety is stronger, in addition, low gear level control valve, high gear shield valve, and not only price is lower, and volume is little, can not affect the integral layout of parts, cost performance is higher, and practicality is stronger.Therefore, driving power taking and force taking of parking that the utility model can not only be safe, and also practicality is stronger.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: air tank 1, power takeoff 2, power taking electromagnetic valve 3, power taking switch 4, low gear level control valve 5, horizontal gear level 51, electromagnetic valve for braking 6, meta cylinder 7, high gear air extractor duct 71, low gear 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 gear shielding valve 13, the two H control system 14 of rear odd-side.
The specific embodiment
Below in conjunction with accompanying drawing explanation and the specific embodiment, the utility model is described in further detail.
Referring to Fig. 1, the power takeoff pneumatic control system that the two H of power taking of can driving a vehicle 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 is in series with power taking switch 4 on the coil of power taking electromagnetic valve 3;
Described power taking electromagnetic valve 3 communicates with the admission port of power takeoff 2 after low gear level control valve 5;
Described air tank 1 successively after parking electromagnetic valve 6, meta cylinder 7 with after double H valve 8 gas circuits in the two H control system 14 of odd-side be connected, electromagnetic valve for braking 6 air extractor ducts, meta cylinder 7 admission ports all communicate with the control mouth of low gear level control valve 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 comprise double H valve 8 and limiting valve 11;
Described air tank 1 communicates with the admission port of meta cylinder 7 through parking electromagnetic valve 6, the high gear air extractor duct 71 of meta cylinder 7 communicates with double H valve admission port 81, the low gear 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 gear level control valve 5, high gear shielding valve 13, and the coil of high gear shielding valve 13 all communicates with low gear air extractor duct 72, double H valve relief port 83.
The applied vehicle one of described power takeoff pneumatic control system has five gears, is respectively 1 gear, 2 gears, 3 gears, 4 gears, 5 gears; Low gear in described low gear level control valve 5 refers to R gear, 1 gear or 2 gears.
The using method of the power takeoff pneumatic control system that a kind of two H of the above-mentioned power taking of driving a vehicle handle, 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 gear with closed low gear level control valve 5, now, pressurized air in air tank 1 enters in the rod chamber of power takeoff 2 control cylinders after power taking electromagnetic valve 3, the power take-off gear that pressurized air promotes power takeoff 2 is meshed so that power takeoff 2 is capable with the power gear in odd-side after change-speed box, the output shaft driven gear pump running of capable power takeoff 2 is carried out the lifting of vehicle with drive hydraulic system principle, descend with in stop operation, thereby realize the driving power taking,
Force taking of parking step: first press shut off cock 9, electromagnetic valve for braking 6 coil place circuit are 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 parking electromagnetic valve 6, after meta cylinder 7, enter double H valve 8 in the two H control system 14 of rear odd-side with the open slew device after mouth in odd-side, connection between transmission shaft, transmission shaft stops operating, vehicle stop is motionless, simultaneously, pressurized air in air tank 1 enters the control mouth of low gear level control valve 5 with closed low gear level control valve 5 through parking electromagnetic valve 6, press again 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, now, pressurized air in air tank 1 is successively through power taking electromagnetic valve 3, after low gear level control valve 5, enter in the rod chamber of power takeoff 2 control cylinders, the power take-off gear that pressurized air promotes power takeoff 2 is meshed so that power takeoff 2 is capable with the power gear in odd-side after change-speed box, the output shaft driven gear pump running of capable power takeoff 2 is carried out the lifting of vehicle with drive hydraulic system principle, descend with in stop operation, thereby realize force taking of parking.
In driving power taking step, described low gear level control valve 5 is controlled closed 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 gear level control valve 5, high gear shielding valve 13.
Principle of the present utility model is described as follows:
The domestic engineering dump truck automatic lifting when running at high speed that often can occur, the phenomenon of clobber, it often is accompanied by serious traffic accident, and even car crash causes the tremendous economic loss.Described fault vehicle mates two layshaft gearbox more, from the power taking of odd-side tween drive shaft, and be responsible for from the power takeoff device control system of odd-side tween drive shaft power taking adopts a power taking switch to control the power taking electromagnetic valve, to realize the driving power taking, and each gear of vehicle can be realized the power taking function of driving a vehicle.But there is potential safety hazard in this kind of system:
Hydraulic tubing in the hydraulic efficiency pressure system of this system support (control vehicle lifting, decline, in stop the hydraulic efficiency pressure system of operation) is long and latus rectum is again less, when the power takeoff rotating speed is higher (when change-speed box is hung 4,5 gear), even the lifting control handle is in lowering position, oil cylinder is jack-up automatically also, thereby unexpected lifting phenomenon occurs, and potential safety hazard is very large; In addition, the power takeoff in existing control system directly is 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 ventilation situation, now, power takeoff will automatic operation, and unexpected lifting phenomenon easily occurs.
For above defect, the solution of having announced is a lot, but all can not guarantee safe driving power taking, force taking of parking, even some technical scheme be take the power taking of abandoning driving a vehicle and is avoided the generation of unexpected lifting phenomenon as cost, and the utility model solves above defect from the control of propulsion source (power takeoff), not only can avoid the generation of unexpected lifting phenomenon, and driving power taking, force taking of parking that can be safe, cost performance is very high, and practicality is very strong.
Embodiment 1:
The power takeoff pneumatic control system that a kind of two H of the power taking of driving a vehicle handle, comprise air tank 1, power takeoff 2, power taking electromagnetic valve 3, power taking switch 4, low gear level control valve 5, electromagnetic valve for braking 6, meta cylinder 7, shut off cock 9, high gear shielding valve 13 and the two H control system 14 of rear odd-side, after this, the two H control system 14 of odd-side comprise 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 gear level control valve 5, high gear shielding valve 13, and the output shaft of power takeoff 2 is connected with gear type pump; Described air tank 1 communicates through parking electromagnetic valve 6 and low gear level control valve 5 control mouths, meta cylinder 7 admission ports, the high gear air extractor duct 71 of meta cylinder 7 communicates with double H valve admission port 81, the low gear 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;
Be in series with a power taking switch 4 on described power taking electromagnetic valve 3 coils, be in series with a shut off cock 9 on the coil of described electromagnetic valve for braking 6; The coil of described high gear shielding valve 13 with low gear air extractor duct 72, double H valve relief port 83, all communicate (folding of high gear shielding valve 13 is controlled by the gas of low gear air extractor duct 72, while in pipeline, gas being arranged, connect, while dying by the spring disconnection);
The applied vehicle one of described power takeoff pneumatic control system has five gears, is respectively 1 gear, 2 gears, 3 gears, 4 gears, 5 gears; Low gear in described low gear level control valve 5 refers to R gear, 1 gear or 2 gears.
The using method of the power takeoff pneumatic control system that a kind of two H of the above-mentioned power taking of driving a vehicle handle, 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, gear being transferred to low gear controls closed with the described low gear level control valve 5 of closed low gear level control valve 5(by horizontal gear level 51 again), now, pressurized air in air tank 1 is successively through power taking electromagnetic valve 3, low gear level control valve 5, after high gear shielding valve 13, enter in the rod chamber of power takeoff 2 control cylinders, the power take-off gear that pressurized air promotes power takeoff 2 is meshed so that power takeoff 2 is capable with the power gear in odd-side after change-speed box, the output shaft driven gear pump running of capable power takeoff 2 is carried out the lifting of vehicle with drive hydraulic system principle, descend with in stop operation, thereby realize the driving power taking,
Force taking of parking step: first press shut off cock 9, electromagnetic valve for braking 6 coil place circuit are 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 parking electromagnetic valve 6, after meta cylinder 7, enter double H valve 8 in the two H control system 14 of rear odd-side with the open slew device after mouth in odd-side, connection between transmission shaft, transmission shaft stops operating, vehicle stop is motionless, simultaneously, pressurized air in air tank 1 enters the control mouth of low gear level control valve 5 with closed low gear level control valve 5 through parking electromagnetic valve 6, press again 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, now, pressurized air in air tank 1 is successively through power taking electromagnetic valve 3, low gear level control valve 5, after high gear shielding valve 13, enter in the rod chamber of power takeoff 2 control cylinders, the power take-off gear that pressurized air promotes power takeoff 2 is meshed so that power takeoff 2 is capable with the power gear in odd-side after change-speed box, the output shaft driven gear pump running of capable power takeoff 2 is carried out the lifting of vehicle with drive hydraulic system principle, descend with in stop operation, thereby realize force taking of parking.
Claims (4)
1. the power takeoff pneumatic control system that the two H of power taking of can driving a vehicle 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 be in series with power taking switch (4) on the coil of power taking electromagnetic valve (3), it is characterized in that:
Described power taking electromagnetic valve (3) communicates with the admission port of power takeoff (2) after low gear level control valve (5);
Described air tank (1) is connected with double H valve (8) gas circuit in the two H control system (14) of rear odd-side successively after parking electromagnetic valve (6), meta cylinder (7), electromagnetic valve for braking (6) air extractor duct, meta cylinder (7) admission port all communicate with the control mouth of low gear level control valve (5), and are in series with shut off cock (9) on the coil of electromagnetic valve for braking (6).
2. the power takeoff pneumatic control system that two H of the power taking of driving a vehicle according to claim 1 handle is characterized in that:
The two H control system (14) of described rear odd-side comprise double H valve (8) and limiting valve (11);
Described air tank (1) communicates with the admission port of meta cylinder (7) through parking electromagnetic valve (6), the high gear air extractor duct (71) of meta cylinder (7) communicates with double H valve admission port (81), the low gear 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 that two H of the power taking of driving a vehicle according to claim 2 handle, 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 gear level control valve (5), high gear shielding valve (13), and the coil of high gear shielding valve (13) all communicates with low gear air extractor duct (72), double H valve relief port (83).
4. the power takeoff pneumatic control system of handling according to the two H of claim 1, the 2 or 3 described power takings of driving a vehicle, it is characterized in that: the applied vehicle one of described power takeoff pneumatic control system has five gears, is respectively 1 gear, 2 gears, 3 gears, 4 gears, 5 gears; Low gear in described low gear level control valve (5) refers to R gear, 1 gear or 2 gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320322867.XU CN203372106U (en) | 2013-06-06 | 2013-06-06 | Double-H controlled power takeoff pneumatic control system capable of taking off power while running |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320322867.XU CN203372106U (en) | 2013-06-06 | 2013-06-06 | Double-H controlled power takeoff pneumatic control system capable of taking off power while running |
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| CN203372106U true CN203372106U (en) | 2014-01-01 |
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| CN201320322867.XU Expired - Lifetime CN203372106U (en) | 2013-06-06 | 2013-06-06 | Double-H controlled power takeoff pneumatic control system capable of taking off power while running |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303179A (en) * | 2013-06-06 | 2013-09-18 | 东风汽车公司 | Double-H operated power takeoff pneumatic control system capable of carrying out traveling power take-off and use method of electrical control system |
-
2013
- 2013-06-06 CN CN201320322867.XU patent/CN203372106U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303179A (en) * | 2013-06-06 | 2013-09-18 | 东风汽车公司 | Double-H operated power takeoff pneumatic control system capable of carrying out traveling power take-off and use method of electrical control system |
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