CN104033433A - Hydraulic control system based on single-engine road sweeper - Google Patents
Hydraulic control system based on single-engine road sweeper Download PDFInfo
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- CN104033433A CN104033433A CN201410189240.0A CN201410189240A CN104033433A CN 104033433 A CN104033433 A CN 104033433A CN 201410189240 A CN201410189240 A CN 201410189240A CN 104033433 A CN104033433 A CN 104033433A
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Abstract
A hydraulic control system based on a single-engine road sweeper comprises a walking hydraulic control system and a sweeping hydraulic control system. The walking hydraulic control system comprises a three-position four-way valve with the control end connected with an accelerator pedal, the output end of the three-position four-way valve is connected with a bidirectional variable pump through an electromagnetic floating valve, and the bidirectional variable pump is respectively connected with an oil inlet and an oil outlet of a bidirectional constant displacement motor to form a circulating loop. The sweeping hydraulic control system comprises an oil tank and transfer cases arranged in parallel, the transfer cases are controlled by two electromagnetic reversing valves with the opposite control actions, the oil tank is connected with the transfer cases through pipelines, and hydraulic pumps are arranged on the connecting pipelines. A disc sweeping motor is controlled by an independent motor electromagnetic reversing valve, and two electromagnetic reversing valves used for flow division are arranged between the electromagnetic reversing valve and the oil tank in parallel. An overflow valve and an unloading electromagnetic reversing valve are respectively connected between the oil tank and the transfer cases. An auxiliary engine is eliminated, the habit of a drive for driving a vehicle is not changed, and a large amount of fuel is saved.
Description
Technical field
The present invention relates to a kind of auto control system in vehicles, be specifically related to a kind of based on monomotor road sweeper hydraulic control system.
Background technique
The urbanization process that is accompanied by China is more and more faster, it is large that city becomes, road, square, park become many, it is more and more important and heavy that the cleaning cleaning in city becomes, and therefore the quantity of sweeper constantly increases, but sweeper is developed so far, on market, all also there is no monomotor sweeper, be twin-engined types, engine in situ only provides the power of driving system, provides power and assistant engine is responsible for cleaning works device.In the time that vehicle carries out cleaning work, the walking power that engine in situ provides only accounts for 20% one 30% of motor total output, and motor is not operated in optimal economic district, certainly will cause like this oil consumption to increase, and noise increases, and the exhausted air quantity of discharge also increases thereupon; And assistant engine is only worked in the time of cleaning work, its power utilization is also very low, and the noise of two engine operation is larger simultaneously, and low speed driving when the operation of sweeper master motor, occurs " low load with strong power " phenomenon; Must configure required related accessories and the control gear of assistant engine simultaneously, thereby increase the manufacture cost of sweeper.Simultaneously due to reasons such as world control discharges, meeting Europe I in the process of Europe IV emission regulation demands, more than the power of medium-sized sweeper engine in situ has progressively risen to 120kW from 57kW, from now on, country will carry out stricter control emission standard to special vehicles such as environmental sanitation, if require the assistant engine of sweeper car also to reach Europe III or Europe IV emission standard, the manufacture cost of sweeper, oil consumption will face more acid test, therefore it is very important and necessary developing high-quality monomotor sweeper, for energy saving with improve environment and there is very major and immediate significance.
Summary of the invention
The object of the invention is to for above-mentioned defect of the prior art, provide a kind of based on monomotor road sweeper hydraulic control system.
To achieve these goals, the technical solution used in the present invention is: comprise walking hydraulic control system and sweeping fluid pressure control system;
Described walking hydraulic control system comprises the three-position four-way valve that control end is connected with gas pedal, the output terminal of three-position four-way valve connects two-way variable displacement pump through electromagnetism floating valve, two-way variable displacement pump is connected respectively with the oil inlet and outlet of two-way quantitative motor, forms circulation loop;
Described sweeping fluid pressure control system comprises fuel tank, and the transfer case be arrangeding in parallel, described transfer case is by two contrary solenoid directional control valve controls of control action, and fuel tank is connected by pipeline with transfer case, and on the pipeline connecting, is provided with the oil hydraulic pump of oil hydraulic motor; Sweep table motor by independent motor solenoid directional control valve control, between this solenoid directional control valve and fuel tank, be arranged with the first shunting solenoid directional control valve and the second shunting solenoid directional control valve that match with different vent flow series flow control valves in parallel; Between described fuel tank and transfer case, be also connected with respectively relief valve and off-load solenoid directional control valve.
Described two-way variable displacement pump is also connected with the slippage pump for carrying out back work.
On the entrance pipe of described slippage pump, be provided with filter.
Described transfer case comprises that dish hoist cylinder is swept on suction nozzle hoist cylinder, a left side, dish hoist cylinder, dump ram and back door oil cylinder are swept in the right side.
On connecting pipeline between described fuel tank and transfer case, be arrangeding in parallel to be useful on oil hydraulic pump prevents that oil hydraulic pump from providing the manual pump of emergency pressure oil sources cannot fuel feeding time because of fault.
Between described oil hydraulic pump, relief valve, off-load solenoid directional control valve and transfer case, and the first shunting solenoid directional control valve, the second shunting solenoid directional control valve and sweeping between table motor are connected by same pipeline, and on this connecting pipeline, pressure gauge are set.
Compared with prior art, the present invention has additionally increased a sweeping fluid pressure control system on the chassis of original sweeper, has solved the sweeper motor problem in non-optimal economic district for a long time in normal operation in conjunction with walking hydraulic control system.Walking hydraulic control system of the present invention adopts the circulatory system of two-way variable displacement pump and two-way quantitative motor composition, because this system is closed circuit, thereby the flow of pump equals the flow of motor all the time, three-position four-way valve is directly connected with the gas pedal of operator cabin, in the time trampling gas pedal change pump delivery, the rotating speed of motor will change, thereby realizes the object to automobile variable speed.Two-way variable displacement pump can pass the mechanical energy of coming by motor changes the hydraulic energy of hydraulic system into, and change motor rotary speed by the discharge capacity that changes self, the first shunting solenoid directional control valve coordinates the different series flow control valve of vent flow with the second shunting solenoid directional control valve, play the effect of shunting in some occasion, when the flow got when a certain solenoid directional control valve is large, sweep fluid in table motor by making to flow through little, now sweep table motor in low-speed stage, otherwise motor is in the middling speed stage.The present invention can not change the custom that driver drives a car, when accelerator pedal, automobile still can accelerate, make motor all the time in economic point, Mechanical Driven while needing high speed, hydraulic driving need low-speed big in operation time, on the basis that does not affect vehicle performance, reduce assistant engine, reduced exhaust emissions amount and noise simultaneously.The present invention can save a large amount of fuel consumes for user, for national energy-saving reduces discharging contribution immense strength, has epoch-making meaning in sweeper industry.
Further, there is hydraulic fluid leak in the closed circulation system of two-way variable displacement pump and two-way quantitative motor composition conventionally, and two-way variable displacement pump is connected with the slippage pump for carrying out back work, and this slippage pump can, to system repairing, maintain system oil hydraulic coupling suitable.
Brief description of the drawings
Fig. 1 hydraulic control system schematic diagram of walking;
Fig. 2 sweeping fluid pressure control system schematic diagram;
In accompanying drawing: 1. slippage pump; 2. two-way variable displacement pump; 3. electromagnetism floating valve; 4. three position four-way directional control valve; 5. two-way quantitative motor; 6. fuel tank; 7. oil hydraulic pump; 8. manual pump; 9. one-way valve; 10. relief valve; 11. pressure gauges; 12. filters.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Referring to Fig. 1,2, the present invention includes walking hydraulic control system and sweeping fluid pressure control system; Walking hydraulic control system comprises the three-position four-way valve 4 that control end is connected with gas pedal, the output terminal of three-position four-way valve 4 connects two-way variable displacement pump 2 through electromagnetism floating valve 3, the oil outlet of two-way variable displacement pump 2 connects the filler opening of two-way quantitative motor 5, the filler opening of two-way variable displacement pump 2 connects the oil outlet of two-way quantitative motor 5, forms circulation loop; Two-way variable displacement pump 2 is also connected with the slippage pump 1 for carrying out back work, is provided with filter 12 on the entrance pipe of slippage pump 1; Sweeping fluid pressure control system comprises fuel tank 6, and the transfer case be arrangeding in parallel, transfer case comprises that dish hoist cylinder is swept on suction nozzle hoist cylinder, a left side, dish hoist cylinder, dump ram and back door oil cylinder are swept in the right side, transfer case is by two contrary solenoid directional control valve controls of control action, fuel tank 6 is connected by pipeline with transfer case, and on the pipeline connecting, is provided with the oil hydraulic pump 7 of oil hydraulic motor; On the connecting pipeline of fuel tank 6 and transfer case, be arranged with in parallel at oil hydraulic pump 7 and provide the manual pump 8 of emergency pressure oil sources cannot fuel feeding time because of fault with the oil hydraulic pump 7 with oil hydraulic motor; On the export pipeline of oil hydraulic pump 7 and manual pump 8, be provided with one-way valve 9; Sweep table motor and controlled by independent motor solenoid directional control valve DT10, between this solenoid directional control valve and fuel tank 6, be arranged with the first shunting solenoid directional control valve DT2 and the second shunting solenoid directional control valve DT3 that match with different vent flow series flow control valves in parallel; Between described fuel tank 6 and transfer case, be also connected respectively relief valve 10 and off-load solenoid directional control valve DT1; Between oil hydraulic pump 7, relief valve 10, off-load solenoid directional control valve DT1 and transfer case, and the first shunting solenoid directional control valve DT2, the second shunting solenoid directional control valve DT3 be connected by same pipeline with sweeping between table motor, and pressure gauge 11 is set on connecting pipeline.
Working principle of the present invention is: walking hydraulic control system comprises two-way variable displacement pump 2, its purposes is the hydraulic energy that motor is passed to the mechanical energy of coming and changes into hydraulic system, and can change self discharge capacity and change motor rotary speed, thereby realizing the object that automobile is carried out to speed governing, is the power source of whole hydraulic system; Two-way quantitative motor 5 is executive components of whole hydraulic system of chassis, with it directly drive automobile running; Filter 12 is realized filtering function, to clean fluid is provided to slippage pump 1; This system is the hydraulic oil kinetic energy that closed circuit advantage is to reclaim oil hydraulic motor 5 oil outlets, realizes Power Recovery, but closed hydraulic loop exists hydraulic fluid leak conventionally, so added a small-power slippage pump 1 in this system.This slippage pump can, to system repairing, maintain system oil hydraulic coupling suitable.The control end of three-position four-way valve 4 is directly connected with gas pedal, and driver can change by trampling gas pedal the flow-direction and flowrate of hydraulic oil in three-position four-way valve 4.Electromagnetism floating valve 3 floats, and drives the stroking mechanism of variable displacement pump, thereby realizes the change of variable displacement pump discharge capacity, thereby realize the control of driver to the sweeper speed of a motor vehicle thereby the hydraulic oil being produced by three-position four-way valve 4 enters electromagnetism floating valve.By variable displacement pump and fixed displacement motor system, automobile driving speed is regulated, can not change driver step on the gas automobile accelerate custom; This hydraulic system unlike the hydraulic system mode that adopts non-power to reclaim, finally change into heat energy and cause the waste of energy thereby the energy being produced by system liquid press pump also has a large amount of speed to flow direct oil sump tank, also make fluid heating up simultaneously.The oil outlet of the oil hydraulic pump of this system is directly connected with the filler opening of motor, the return opening of oil hydraulic pump is directly connected with the oil outlet of motor, thereby has formed a closed circuit, can reclaim a large amount of speed streams of motor oil outlet, thereby minimizing energy loss, reduces system oil temperature.Because this system adopts two-way variable displacement pump and fixed displacement motor mechanism, conventionally the discharge capacity of motor and the rotating speed of motor are steady state value, because this system is closed circuit, thereby the flow of pump equals the flow of motor all the time, change pump delivery in the time of our accelerator pedal time, the rotating speed of motor will change, thereby can realize, automobile is carried out to speed change.
Q
pump duty=Q
motor flowq
pump duty=n
electricityq
pump displacement
Q
motor flow=n
motorq
motor displacement
Motor speed and motor displacement are fixed value, so the rotating speed of motor is the linear function of variable displacement pump discharge capacity, thereby in the time regulating pump delivery, the rotating speed of motor can change accordingly, can maintain pipe-line system convenient pressure by slippage pump.
Sweeping fluid pressure control system hydrovalve DT1 is unloading valve, plays overall earial drainage effect, when DT1 must not when electricity the direct oil sump tank of whole fluid of oil pump 7.As long as this hydraulic system in work condition state DT1 all electric.(hereinafter operating mode mention other all must not electricity do not comprise DT1) gear pump 8 is for manual pump is in emergency circumstances for system provides fluid power oil sources, and the sweep dish, suction nozzle, jack-up garbage can that have put down as regained carry out maintenance operation etc.Originally DT4 obtains electricly, and other all must not electricity, and suction nozzle hoist cylinder decline preparatory work, closes DT4 when the gap between suction nozzle two side rigid elements and road surface during in 5～10mm left and right and allow it in meta.Now open the DT6 that dish hoist cylinder is swept in left and right, DT8 solenoid valve allows to be swept dish hoist cylinder and declines again, and other all must not electricity, closes DT6 when disc brush and road surface pressure when suitable, and DT8 allows it in meta, and now preparatory work all completes.Allow again DT10 obtain electric, other all must not be electric, now the hydraulic oil of main pump all flow through oil hydraulic motor promote motor run up, now motor is in the stage of running up, this operating mode is suitable for the very dirty needs in road surface and sweeps the occasion that runs up of dish, and DT2 and DT3 coordinate series flow control valve below to play main pump is shunted in some occasion.Because the vent flow of two series flow control valves in left and right differs, left side vent flow is large, and the right vent flow is little, thereby to obtain the flow of getting from valve when electric large as DT3, thereby make to flow through, to sweep fluid in table motor little, therefore now sweep table motor in low-speed stage; When DT2 obtains electricly, the similar DT3 of situation obtains electric, and motor is in the middling speed stage.In the time that cleaning works finishes, only need DT10 dead electricity, DT7, DT5, DT9 obtains the electric a bit of time and now sweeps dish hoist cylinder, and suction nozzle hoist cylinder is all in return state, then close DT7, DT9 and DT5, fluid unnecessary in this operating process overflows back fuel tank through relief valve.(in whole operating mode, DT1 is all obstructed, in operating mode operation, series flow control valve is not worked, as long as have unnecessary flow in driver's operation DT series and all overflow back fuel tank through relief valve when what hydraulic fluid pressure exceeded 15MPa) in the time that needs are tumbled casing, can to make DT11 obtain electric, and while needing casing return, DT12 obtains electric; In the time that needs are opened back door of rubbish bin, can make DT13 obtain electric, while needing closing back door, DT14 obtains electric; Finally close DT1 and realize the whole off-loads of hydraulic oil, so far this sweeping machine hydraulic system of working principle part finishes.
Claims (6)
1. based on a monomotor road sweeper hydraulic control system, it is characterized in that: comprise walking hydraulic control system and sweeping fluid pressure control system;
Described walking hydraulic control system comprises the three-position four-way valve (4) that control end is connected with gas pedal, the output terminal of three-position four-way valve (4) connects two-way variable displacement pump (2) through electromagnetism floating valve (3), two-way variable displacement pump (2) is connected respectively with the oil inlet and outlet of two-way quantitative motor (5), forms circulation loop;
Described sweeping fluid pressure control system comprises fuel tank (6), and the transfer case be arrangeding in parallel, described transfer case is by two contrary solenoid directional control valve controls of control action, fuel tank (6) is connected by pipeline with transfer case, and on the pipeline connecting, is provided with the oil hydraulic pump (7) of oil hydraulic motor; Sweep table motor and controlled by independent motor solenoid directional control valve (DT10), between this solenoid directional control valve and fuel tank (6), be arranged with the first shunting solenoid directional control valve (DT2) and the second shunting solenoid directional control valve (DT3) that match with different vent flow series flow control valves in parallel; Between described fuel tank (6) and transfer case, be also connected with respectively relief valve (10) and off-load solenoid directional control valve (DT1).
2. according to claim 1 based on monomotor road sweeper hydraulic control system, it is characterized in that: described two-way variable displacement pump (2) is also connected with the slippage pump (1) for carrying out back work.
3. according to claim 2 based on monomotor road sweeper hydraulic control system, it is characterized in that: on the entrance pipe of described slippage pump (1), be provided with filter (12).
4. according to claim 1 based on monomotor road sweeper hydraulic control system, it is characterized in that: described transfer case comprises that dish hoist cylinder is swept on suction nozzle hoist cylinder, a left side, dish hoist cylinder, dump ram and back door oil cylinder are swept in the right side.
According to described in claim 1 or 4 based on monomotor road sweeper hydraulic control system, it is characterized in that: on the connecting pipeline between described fuel tank (6) and transfer case, be arrangeding in parallel to be useful on oil hydraulic pump (7) prevents that oil hydraulic pump (7) from providing the manual pump (8) of emergency pressure oil sources cannot fuel feeding time because of fault.
6. according to claim 5 based on monomotor road sweeper hydraulic control system, it is characterized in that: between described oil hydraulic pump (7), relief valve (10), off-load solenoid directional control valve (DT1) and transfer case, and first shunting solenoid directional control valve (DT2), the second shunting solenoid directional control valve (DT3) and sweep between table motor and be connected by same pipeline, and pressure gauge (11) is set on this connecting pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189240.0A CN104033433A (en) | 2014-05-06 | 2014-05-06 | Hydraulic control system based on single-engine road sweeper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189240.0A CN104033433A (en) | 2014-05-06 | 2014-05-06 | Hydraulic control system based on single-engine road sweeper |
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| CN104033433A true CN104033433A (en) | 2014-09-10 |
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| CN201410189240.0A Pending CN104033433A (en) | 2014-05-06 | 2014-05-06 | Hydraulic control system based on single-engine road sweeper |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156381A (en) * | 2015-09-25 | 2015-12-16 | 湖北合加环境设备有限公司 | Suction nozzle balance device for special sanitation truck |
| CN105257632A (en) * | 2015-10-27 | 2016-01-20 | 中联重科股份有限公司 | Hydraulic driving system and control method thereof, and environmental sanitation machine |
| CN105422526A (en) * | 2015-12-04 | 2016-03-23 | 北汽福田汽车股份有限公司 | Hydraulic system, motor sweeper hydraulic system and motor sweeper with motor sweeper hydraulic system |
| CN105416050A (en) * | 2015-11-28 | 2016-03-23 | 贵州航天特种车有限责任公司 | Chassis hydraulic drive system |
| CN105715598A (en) * | 2016-05-03 | 2016-06-29 | 徐州徐工环境技术有限公司 | Floating hydraulic system of road sweeper work device |
| CN107386176A (en) * | 2017-08-26 | 2017-11-24 | 湖北时瑞达重型工程机械有限公司 | A kind of combined sweeper |
| CN108032731A (en) * | 2017-12-27 | 2018-05-15 | 徐州徐工环境技术有限公司 | Vehicle |
| CN109403254A (en) * | 2018-09-07 | 2019-03-01 | 天嘉智能装备制造江苏股份有限公司 | The sweeper intelligent water sprinkling control system of monomotor driving |
| CN110685967A (en) * | 2019-09-20 | 2020-01-14 | 农业农村部南京农业机械化研究所 | Full hydraulic drive high-speed transplanter chassis |
| CN110864017A (en) * | 2018-08-27 | 2020-03-06 | 河南森源重工有限公司 | Hydraulic control system and snow melting vehicle |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156381A (en) * | 2015-09-25 | 2015-12-16 | 湖北合加环境设备有限公司 | Suction nozzle balance device for special sanitation truck |
| CN105257632A (en) * | 2015-10-27 | 2016-01-20 | 中联重科股份有限公司 | Hydraulic driving system and control method thereof, and environmental sanitation machine |
| CN105416050A (en) * | 2015-11-28 | 2016-03-23 | 贵州航天特种车有限责任公司 | Chassis hydraulic drive system |
| CN105416050B (en) * | 2015-11-28 | 2018-07-24 | 贵州航天特种车有限责任公司 | A kind of chassis fluid power system |
| CN105422526A (en) * | 2015-12-04 | 2016-03-23 | 北汽福田汽车股份有限公司 | Hydraulic system, motor sweeper hydraulic system and motor sweeper with motor sweeper hydraulic system |
| CN105715598A (en) * | 2016-05-03 | 2016-06-29 | 徐州徐工环境技术有限公司 | Floating hydraulic system of road sweeper work device |
| CN107386176A (en) * | 2017-08-26 | 2017-11-24 | 湖北时瑞达重型工程机械有限公司 | A kind of combined sweeper |
| CN108032731A (en) * | 2017-12-27 | 2018-05-15 | 徐州徐工环境技术有限公司 | Vehicle |
| CN110864017A (en) * | 2018-08-27 | 2020-03-06 | 河南森源重工有限公司 | Hydraulic control system and snow melting vehicle |
| CN109403254A (en) * | 2018-09-07 | 2019-03-01 | 天嘉智能装备制造江苏股份有限公司 | The sweeper intelligent water sprinkling control system of monomotor driving |
| CN110685967A (en) * | 2019-09-20 | 2020-01-14 | 农业农村部南京农业机械化研究所 | Full hydraulic drive high-speed transplanter chassis |
| CN110685967B (en) * | 2019-09-20 | 2021-01-29 | 农业农村部南京农业机械化研究所 | Full hydraulic drive high-speed transplanter chassis |
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Application publication date: 20140910 |