CN104943627A - Intelligent safety energy-saving hydraulic control system for dumper - Google Patents
Intelligent safety energy-saving hydraulic control system for dumper Download PDFInfo
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- CN104943627A CN104943627A CN201410122276.7A CN201410122276A CN104943627A CN 104943627 A CN104943627 A CN 104943627A CN 201410122276 A CN201410122276 A CN 201410122276A CN 104943627 A CN104943627 A CN 104943627A
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Abstract
The invention provides an intelligent safety energy-saving hydraulic control system for a dumper. The hydraulic control system comprises an electric control unit, a pressure sensor and a signal output unit, the signal output end of the pressure sensor is connected with the signal input end of the electric control unit, the signal output end of the electric control unit is connected with the signal input end of the signal output unit, and the pressure sensor is arranged on an oil way of a dumper hydraulic control unit. The system further comprises a speed adjusting device connected with a hydraulic pump of the dumper hydraulic control unit. The flow demand of the hydraulic system is automatically recognized through pressure detection, a mechanical friction speed adjusting mechanism is used for adjusting the rotating speed of a gear pump so as to adjust the output flow, and under the condition of meeting the flow demand, oil source heat emission and energy loss caused by overflowing are reduced. Working condition parameters of the dumper working process are detected and recorded in the whole course, the hydraulic system is monitored, faults possibly occurring are judged, and accidents are prevented and controlled.
Description
Technical field
The present invention relates to a kind of intelligent control system, especially a kind of intelligent safety energy conservation energy dumper hydraulic control system.
Background technology
Dumping car is a kind of common engineering transportation vehicle, be widely used in the basic engineering construction such as mine, capital construction field, dumping car has very high work efficiency, hydraulic efficiency pressure system is equipment and the technology of its core, and traditional hydraulic efficiency pressure system is generally made up of Hydraulic Pump, fuel tank, elevating ram, control cock etc.Although hydraulic efficiency pressure system ensures that dumping car has very high work efficiency, also there are some vice propers, such as Hydraulic Pump is generally by driven by engine, and rotating speed can not need automatically to regulate with operating mode, causes energy dissipation.When after hydraulic efficiency pressure system overload or Long-Time Service, hydraulic system pipeline easily bursts, pipelines from bursting causes work stagnation, environmental pollution, causes large case stall to be fallen in some cases, causes larger accident.Vehicle is easily caused to be turned on one's side in hydraulic lifting process, once heavy losses such as generation will cause casualties, vehicle damage, delayed works.Generally, the economic loss of once rollover accident can reach tens thousand of to hundreds thousand of unit.The rollover of dumping car and hydraulic efficiency pressure system are directly relevant, after oil cylinder of dumper Long-Time Service, eccentric wear and flexural deformation occur, reduce the torsion stiffness in compartment, along with the increase of lift height, the impact of oil cylinder is amplified at double, and the torsional deflection vehicle that acquires a certain degree will be turned on one's side.Sometimes dumping car rollover is other reason, the Uneven road that such as dumping car is parked, or soft spots of road bed, or there is unbalance loading in vehicle-mounted cargo, also have body of tipper carriage torsion stiffness not enough, when unbalance loading appears in goods, there is torsional deflection in compartment, and the result of torsional deflection makes unbalance loading strengthen further, in this case, the lifting of hydraulic efficiency pressure system can aggravate the inclination of vehicle, and when exceeding safe tilt angle, vehicle will be turned on one's side.What the reason no matter dumping car occurs to turn on one's side is, or it is directly or indirectly all relevant with hydraulic efficiency pressure system, therefore, start with from hydraulic efficiency pressure system, pass through intelligent control technology, sensing detection technology, optimize whole hydraulic control system, just can anti-rollover accident in advance, prevent pipelines from bursting, the flow of all right regulator solution press pump automatically, saves the energy.
At present, research about self-unloading vehicle hydraulic system also has a lot, such as: be CN202676263U at Authorization Notice No., authorized announcement date is disclose a kind of quarry tipper load weighing system in the utility model patent file of on 01 16th, 2013, and this system includes car body controller unit, pressure sensor unit and output unit; Pressure sensor unit is arranged in the hanging oil cylinder of quarry tipper, and the setting of pressure sensor unit is the load for detecting dumping car, prevents dumping car from overloading, thus extends the service life of dumping car and tire; This system also includes obliquity sensor and speed sensor, and obliquity sensor is for detecting change of pitch angle during vehicle climbing, and speed sensor is for detecting car speed.Whole system is detected by pressure sensor, obliquity sensor, speed sensor and by the every data in the use procedure of vehicle body control unit registration of vehicle, be convenient to for every data analysis, warning.Although this system includes the inspection unit such as pressure sensor, obliquity sensor simultaneously, can only be arranged on vehicle as a kind of electronic recording equipment, for the emergency situation of vehicle burst.Such as, when collapse occurs the hydraulic lifting system of dumping car, this system just cannot provide defensive measure timely, will cause compartment stall tenesmus like this, accidents caused.
Be CN201041175Y at Authorization Notice No., authorized announcement date is disclose a kind of heavy self-dumping vehicle hydraulic high-pressure oil pipe cracking automatic protection device in the utility model patent file of on 03 26th, 2008, this device comprises valve body, parallelly on valve body be provided with oilhole and valve shaft hole, axle valve is provided with in described valve shaft hole, axle valve radial direction is provided with through valve opening, and side, valve shaft hole is provided with the oil duct being communicated with oilhole, and valve shaft hole opposite side is provided with high-pressure oil duct; Oilhole opposite side is provided with three through holes, three hole, through hole side communication valve oil ducts, and valve oil road is communicated with high-pressure oil duct, and the valve oil road junction of three through holes is provided with check valve; One end of axle valve extends outside valve body, and its overhanging end is connected to rocking arm, and the rocking arm other end is connected to electromagnetic valve by pull bar.The high-pressure oil duct place of this device is communicated with heavy self-dumping vehicle hydraulic high-pressure oil pipe, and oilhole is communicated with the oil inlet of elevating ram.When explosion occurs high pressure fuel pipe, the check valve in fender guard is closed automatically, has cut off the oil return line of elevating ram, makes elevating ram keep lifting quiescence, avoids the accident that railway carriage and goods are pounded down and caused.Although this automatic safety device can, when hydraulic efficiency pressure system is collapsed, keep compartment not drop, and is also a kind of emergency facility, is merely able to avoid problem to worsen further, fundamentally can not avoids the collapse of hydraulic efficiency pressure system after hydraulic efficiency pressure system collapse.
Summary of the invention
The object of this invention is to provide a kind of intelligent safety energy conservation energy dumper hydraulic control system, can regulator solution press pump flow automatically, omnidistance detection, record dumping car duty parameter, and there is intelligent decision, instant alarming and immediately take anti-rollover, antioverloading and preventing oil pipe explosion measure.
In order to solve the problems of the technologies described above, technical scheme of the present invention is as follows: a kind of intelligent safety energy conservation energy dumper hydraulic control system, comprise electric control unit, pressure sensor, signal output unit, the signal output part of pressure sensor is connected with the signal input part of electric controller unit, the signal output part of electric controller unit is connected with the signal input part of output unit, it is characterized in that: described pressure sensor is arranged on the oil circuit of dumping car hydraulic control unit; This system also includes speed regulation device, and described speed regulation device is connected with the Hydraulic Pump of dumping car hydraulic control unit.
A kind of intelligent safety energy conservation energy dumper hydraulic control system according to claim 1, it is characterized in that: described speed regulation device is made up of frictional variable speed regulating control and servomotor, the input end of frictional variable speed regulating control is connected auxiliary gear box and oil pump respectively with mouth, the adjusting shaft mouth of frictional variable speed regulating control is then connected with servo motor shaft, and servomotor is by electric control unit connection control.
Improvement to technique scheme: described pressure sensor is arranged near lifting valve place between lifting valve and oil cylinder, and the detection signal end of pressure sensor is connected with the single-chip data bus of electric controller unit by interface circuit.
Further improvement to technique scheme: this system also includes obliquity sensor, described obliquity sensor is two, two obliquity sensors are arranged on dumping car large railway carriage or compartment front top and self-dumping undercarriage for automobile respectively, and detection signal is connected with the single-chip data bus of electric controller unit by interface circuit.
Improving further again technique scheme: be serially connected with electric control reversing valve respectively in the oil pump on off control gas circuit of described control system and lifting valve commutation control gas circuit.
Further improvement to technique scheme: described electric control unit is connected with random access memory.
Beneficial effect:
Intelligent safety energy conservation energy dumper hydraulic control system of the present invention, automatically flow rate of hydraulic system demand is identified by pressure detection, mechanical friction regulating mechanism adjusting gear revolution speed is utilized to carry out delivery rate adjustment, when meeting traffic demand, the oil sources heating that minimizing overflow causes and energy loss.Whole process detects and records the duty parameter of dumping car working process, comprise hydraulic system pressure change, car load and the compartment angle change relative to level ground, based on above-mentioned detection data, control unit is monitored hydraulic efficiency pressure system, the fault such as pressure overload, oil pipe burst that comprises that may occur is judged, simultaneously in dumping car uninstall process, the rollover accident that may cause owing to there is the reason such as eccentric wear and flexural deformation after parking Uneven road, soft spots of road bed, the serious unbalance loading of vehicle-mounted cargo and oil cylinder of dumper Long-Time Service is monitored.When above-mentioned failure prone appears in dumping car, control unit sends sound and light alarm in time, and takes corresponding measure of control simultaneously, such as the lifting of stop solution compressing cylinder, cuts off the oil return line of oil cylinder, the work etc. of stop solution press pump.To prevent the final generation of above-mentioned fault or to reduce the loss.The duty parameter of record can be preserved for a long time, and the mode by protocol when needing reads, and utilizes the data of record to carry out accident qualification, analysis on accident cause, helps product design improvement etc.
Accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present invention.
Fig. 2 is hydraulic schematic diagram of the present invention.
Fig. 3 is speed regulation device schematic diagram of the present invention
In figure: 1 be amplifying circuit, 2 be photoelectrical coupler, 3 be intermediate relay, 4 be obliquity sensor, 5 be pressure sensor, 6,7 be peripheral interface circuit, 8 be micro controller system, 9 be master cock, 10 be nixie display, 11 be servomotor, 12,13 be hand air valve, 14 be oil cylinder, 15 be limit valve, 16 be electric control valve, 17 be lifting valve, 18 be frictional variable speed regulating control, 19 be auxiliary gear box, 21 be electric control reversing valve, 20 for Hydraulic Pump, 22 stepless change regulating control friction wheels.
Detailed description of the invention
Intelligent safety energy conservation energy dumper hydraulic control system of the present invention as shown in Figure 1, Figure 2, Figure 3 shows, computer on slice 8 and telltale 10 are arranged on dumping car operator's compartment, be convenient to navigating mate observe and operation, servomotor 11 is connected with frictional variable speed regulating control 18, for the flow of regulator solution press pump.Pressure sensor 5 detects hydraulic system pressure, is transformed into current signal and is transported to computer on slice.Electric control valve 16 is connected in the pneumatic control circuit of hydraulic efficiency pressure system, has during rollover tendency cut off Pneumatic control circuit for dumping car.Electric control valve 21 is connected in the pneumatic control circuit of hydraulic efficiency pressure system, when occurring abnormal for self-unloading vehicle hydraulic system operation pressure, disconnects auxiliary gear box and controls gas circuit.Obliquity sensor 4 is two, two obliquity sensors 4 are arranged on dumping car large railway carriage or compartment front top and self-dumping undercarriage for automobile respectively, independently identify dumping car car load and large case angle change, once judge that dumping car has the dangerous of rollover, electric control valve 16 controls lifting valve 17 and gets back to meta, stop lifting and pressurize is carried out to elevating ram 14, except prevention inclination of vehicle rollover except, the data recorded by obliquity sensor 4 also help analyze search dumping car tilt reason and roll-over accident occur after reviewing accident causation.One-chip computer 8 monitors the operation pressure of hydraulic efficiency pressure system by pressure sensor 5, and according to the control policy drafted in advance, control friction wheel 22 position that servomotor 11 regulates friction-type gearshift adjustment device 18, thus regulate the rotating speed of friction-type gearshift adjustment device 18 mouth, realize the regulable control of Hydraulic Pump flow.Electric control valve 16 and electric control valve 21 are connected in the pneumatic control circuit of hydraulic efficiency pressure system, for a certain reason during self-unloading vehicle hydraulic system collapse, electric control valve 16 controls lifting valve 17 and gets back to meta, prevent the large case stall of dumping car from falling, when certain reason hydraulic system pressure exceedes certain limit value of nominal working pressure, electric control valve 21 cuts off the Pneumatic control circuit of auxiliary gear box 19, the work of stop solution press pump, collapses occur to prevent hydraulic efficiency pressure system.The clutch of auxiliary gear box is controlled by hand air valve 12, and lifting and the whereabouts of large case are controlled by hand air valve 13.
When hydraulic efficiency pressure system is in off working state, each control cock is in treats mode of operation.When dumping car carries out lifting operation, put hand air valve 12 spool left, gas circuit is connected, and auxiliary gear box engages, and Hydraulic Pump is started working, and now hydraulic oil flows back to fuel tank through check valve, filter, and owing to not having hydraulic oil to enter hydraulic actuating cylinder, hydraulic actuating cylinder keeps transfixion.Put hand control valve (HCV) 13 spool to the right, pressurized air promotes lifting valve 18 spool left, and hydraulic oil enters oil cylinder through lifting valve, promotion oil cylinder piston protrudes upward, after lifting puts in place, and limit valve action, cut off gas circuit, lifting valve gets back to meta, oil cylinder pressurize, puts hand control valve (HCV) 13 spool to the right, pressurized air promotes lifting valve 18 spool to the right, the oil return line conducting of lifting valve 18, the hydraulic oil in oil cylinder flows back to fuel tank through lifting valve 18, and hydraulic actuating cylinder falls under gravity.In the middle of the process of hydraulic actuating cylinder lifting, when computer control unit detects that dumping car has rollover dangerous, send control signal and make intermediate relay J1 adhesive, electric control valve 16 is charged, and cut off gas circuit, the spool of lifting valve under the action of the spring, get back to meta, oil cylinder keeps motionless.Get rid of when computer control unit detects that dumping car rollover is dangerous, control intermediate relay J1 and disconnect, electric control valve 16 dead electricity, gas circuit is connected again, and oil cylinder continues lifting.In the middle of the process of hydraulic actuating cylinder lifting, when computer control unit detects hydraulic efficiency pressure system rapid decompression, judge that oil pipe may burst, send control signal and make intermediate relay J1, J2 adhesive simultaneously, electric control valve 16 is charged, and cut off gas circuit, the spool of lifting valve under the action of the spring, get back to meta, oil cylinder keeps motionless.Electric control valve 21 adhesive, cut off auxiliary gear box and control gas circuit, oil pump quits work.When computer control unit detects that hydraulic efficiency pressure system internal pressure reaches rated pressure, control servomotor progressively reduces oil pump rotating speed by frictional variable speed regulating control, reduce the flow exported, during limit value a certain lower than rated pressure, control servomotor progressively increases oil pump rotating speed by frictional variable speed regulating control, increase the flow exported, under meeting the condition of traffic requirement, keep constant pressure, reduce overflow energy loss.
Intelligent safety energy conservation energy dumper hydraulic control system of the present invention, innovative point is by detection technique and calculates control technology, achieve the Based Intelligent Control of self-unloading vehicle hydraulic system, such as automatically identify the change of hydraulic actuating cylinder traffic demand, and the rotating speed of real-time regulator solution press pump, when ensureing to meet traffic demand, the oil sources heating that minimizing overflow causes and energy loss; Also have automatically detect, record hydraulic system pressure, prevention hydraulic efficiency pressure system causes hydraulic efficiency pressure system collapse due to overload, if hydraulic efficiency pressure system because of the reasons such as pipeline is aging there is collapse time, confining liquid cylinder pressure oil return line of taking measures in time prevents compartment stall from dropping; Relative to the change of terrain slope angle in automatic detection dumping car car load and greatly case working process, the variation tendency at automatic analysis angle of inclination, have during rollover tendency at vehicle and take measures in time to prevent situation from worsening further and sound and light alarm, make the use safety of vehicle obtain effective guarantee; The hydraulic system pressure data of detection record and dumping car car load and large case change of pitch angle data can be preserved for a long time, and the mode with protocol when needing again reads, data can analyze debugging hydraulic efficiency pressure system for hydraulic efficiency pressure system manufacturer, the reason of assessment, qualification vehicle generation rollover accident.
Claims (7)
1. an intelligent safety energy conservation energy dumper hydraulic control system, comprise electric control unit, pressure sensor, signal output unit, the signal output part of pressure sensor is connected with the signal input part of electric controller unit, the signal output part of electric controller unit is connected with the signal input part of output unit, it is characterized in that: described pressure sensor is arranged on the oil circuit of dumping car hydraulic control unit; This system also includes speed regulation device, and described speed regulation device is connected with the Hydraulic Pump of dumping car hydraulic control unit.
2. a kind of intelligent safety energy conservation energy dumper hydraulic control system according to claim 1, it is characterized in that: described speed regulation device is made up of frictional variable speed regulating control and servomotor, the input end of frictional variable speed regulating control is connected auxiliary gear box and oil pump respectively with mouth, the adjusting shaft mouth of frictional variable speed regulating control is then connected with servo motor shaft, and servomotor is by electric control unit connection control.
3. a kind of intelligent safety energy conservation energy dumper hydraulic control system according to claim 1 and 2, it is characterized in that: described pressure sensor is arranged near lifting valve place between lifting valve and oil cylinder, and the detection signal end of pressure sensor is connected with the single-chip data bus of electric controller unit by interface circuit.
4. a kind of intelligent safety energy conservation energy dumper hydraulic control system according to claim 1 and 2, it is characterized in that: this system also includes obliquity sensor, described obliquity sensor is two, two obliquity sensors are arranged on dumping car large railway carriage or compartment front top and self-dumping undercarriage for automobile respectively, and detection signal is connected with the single-chip data bus of electric controller unit by interface circuit.
5. a kind of intelligent safety energy conservation energy dumper hydraulic control system according to claim 3, it is characterized in that: this system also includes obliquity sensor, described obliquity sensor is two, two obliquity sensors are arranged on dumping car large railway carriage or compartment front top and self-dumping undercarriage for automobile respectively, and detection signal is connected with the single-chip data bus of electric controller unit by interface circuit.
6. a kind of intelligent safety energy conservation energy dumper hydraulic control system according to claim 1 and 2, is characterized in that: be serially connected with electric control reversing valve respectively in the oil pump on off control gas circuit of described control system and lifting valve commutation control gas circuit.
7. a kind of intelligent safety energy conservation energy dumper hydraulic control system according to claim 1 and 2, is characterized in that: described electric control unit is connected with random access memory.
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| CN201410122276.7A CN104943627B (en) | 2014-03-31 | 2014-03-31 | A kind of intelligent safety energy conservation energy dumper hydraulic control system |
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| CN201410122276.7A CN104943627B (en) | 2014-03-31 | 2014-03-31 | A kind of intelligent safety energy conservation energy dumper hydraulic control system |
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| CN104943627B CN104943627B (en) | 2018-10-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106740054A (en) * | 2016-12-21 | 2017-05-31 | 湘电重型装备有限公司 | A kind of delivered payload capability is the electric power wheel self-discharging vehicle of 136t |
| CN108482222A (en) * | 2018-05-05 | 2018-09-04 | 袁菊花 | The controller for lifting of dumper |
| CN108859942A (en) * | 2018-05-21 | 2018-11-23 | 苏州工业园区职业技术学院 | A kind of lifting control system of dumper |
| CN109615726A (en) * | 2018-12-12 | 2019-04-12 | 湖北汽车工业学院 | Information output method, device, dumper system, computer and storage medium |
| CN112918359A (en) * | 2019-12-06 | 2021-06-08 | 陕西汽车集团有限责任公司 | Electric control gas pilot hydraulic system for dump truck |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112918359A (en) * | 2019-12-06 | 2021-06-08 | 陕西汽车集团有限责任公司 | Electric control gas pilot hydraulic system for dump truck |
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