CN103836025B - Hydraulic system detects fast accelerates combined system with fault - Google Patents
Hydraulic system detects fast accelerates combined system with fault Download PDFInfo
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- 238000001514 detection method Methods 0.000 claims abstract description 94
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- 239000007788 liquid Substances 0.000 claims description 69
- 238000006073 displacement reaction Methods 0.000 claims description 43
- 239000002828 fuel tank Substances 0.000 claims description 41
- 239000007799 cork Substances 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims 8
- 238000011156 evaluation Methods 0.000 abstract description 13
- 238000004886 process control Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 11
- 238000001595 flow curve Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 8
- 230000004044 response Effects 0.000 abstract description 5
- 241001269238 Data Species 0.000 abstract description 2
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- 238000012369 In process control Methods 0.000 description 8
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- 238000010965 in-process control Methods 0.000 description 8
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- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000010259 detection of temperature stimulus Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 239000010687 lubricating oil Substances 0.000 description 1
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Abstract
Hydraulic system detects fast to be accelerated combined system with fault and belongs to hydraulic system technical field of auxiliary equipment, and in the present invention, process control machine signal output part is connected with PLC and analog signal output card signal input end; PLC signal output is connected with each selector valve of oil hydraulic circuit, electric-motor pump, transfer case, and each sensor of oil hydraulic circuit is connected with data collecting card signal input part; Process control machine, data collecting card, PLC, analog signal output card, oil hydraulic circuit are all affixed with transhipment vehicle frame; Detection of content of the present invention is comprehensive, and testing process is simple, except Pressure-flow curves, outside the routine datas such as pilot pressure-flow curve, cracking pressure and closing pressure, also can realize the assessment of some control port dynamic response characteristics; The detection of self most of area leakage can be realized; Owing to adding fault acceleration system, therefore can acceleration equipment Performance Evaluation, improve working efficiency.
Description
Technical field
The invention belongs to hydraulic system technical field of auxiliary equipment, be specifically related to a kind of hydraulic system device for fast detecting and fault accelerating unit.
Background technique
For a long time, hydraulic system is because its feature that can realize heavy duty etc. is widely used in the middle of the crucial power unit of various heavy duty equipment, and range throughout is military, engineering machinery field.But it is fragile also to there is functional parts in hydraulic equipment, the heavier shortcoming being difficult to carrying etc. of equipment, simultaneously the structure of hydraulic system and connection comparatively complicated, system mainly comprises power source, control valve group, execution oil hydraulic pump and auxiliary element and hydraulic oil five major part, good signal detecting technology is needed to its faut detection, consuming time also more of a specified duration.In addition, the requirement of hydraulic equipment to environment etc. is higher, the working condition of hydraulic equipment under locality, specified temp is the important indicator of hydraulic equipment service behaviour assessment, and consuming time too of a specified duration to the specific environment service behaviour assessment of the not easily damaged parts of hydraulic equipment, causes and affects equipment evaluation efficiency.So there is very important practical benefit and military significance to the research of the fault acceleration equipment that Hydraulic system inspecting equipment and acceleration equipment are assessed.
General, the research for fault acceleration equipment does not form fixing pattern; For Hydraulic system inspecting adopt be hydraulic system part is split after connect corresponding hydraulic station again and detect, adopt this mode consuming time comparatively of a specified duration, affect the productivity effect of enterprise, affect and operationally normally to carry out.In addition, adopt the method to detect hydraulic system, integration degree is lower, cannot realize the detection to a whole hydraulic system, assessment.And the detection facility data capture of general employing this kind of mode is comparatively difficult, validity is not enough, cannot realize the better assessment to equipment working condition, detection.
Then there is integrated, the digitizer that can detect a whole hydraulic system, not only can realize the detection to a whole hydraulic system, assessment, and the better collection detecting data can have been realized, ensure the better assessment to equipment working condition.As just relate to a kind of comparatively advanced detection system in " hydraulic system fault General detecting platform is studied " literary composition that Yang little Qiang etc. delivers on " lathe and hydraulic pressure " magazine the 38th volume, plateform system is made up of two-part, and platform software forms and forms with platform hardware: platform software forms and comprises status data base management system and Detection and diagnosis system; Platform hardware formation comprises PX1 bus hardware platform, test stand for hydraulic element, portable detection unit and ground fixed platform.Not only can realize state-detection and the evaluation function of all components and parts of a whole hydraulic system, comprise pressure, flow, the rotating speed of oil hydraulic pump, control valve, motor etc., the control port pressure of control valve, flow and equipment leakage amount, can realize its in-situ acquisition and store the function of technology status parameter etc. of construction machinery hydraulic system.And can realize in conjunction with software systems the better collection detecting data, ensure the better assessment to equipment working condition.But in project alternative, we can find that although its plateform system can realize state-detection and the evaluation function of all components and parts of a whole hydraulic system, also there is many problems, as comprehensive not and comparatively complicated to the Detection of content of hydraulic system; Detection platform cannot detect self whether leak with leakage rate how many; Data collection point is unreasonable.In addition, this systemic-function is comparatively single, cannot realize accelerating function, acceleration equipment Performance Evaluation to hydraulic system fault.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic system to detect fast and accelerate combined system with fault, ensureing under the better collection of hydraulic system data and the prerequisite of Equipment Inspection assessment accuracy, solution Hydraulic system inspecting Equipment Inspection content is in the past comprehensive not, testing process is complicated, cannot realize the problem of the assessment of certain some dynamic characteristic; Detection platform cannot detect the problem of self leakage etc.In addition, add fault acceleration system, acceleration equipment Performance Evaluation, improves working efficiency.
The present invention is made up of process control machine I, data collecting card II, analog signal output card III, PLC IV, transhipment vehicle frame V and oil hydraulic circuit VI, and wherein the signal output part of process control machine I is connected through the signal input part of connection with PLC IV and analog signal output card III; The signal output of PLC IV is connected through each selector valve of connection and oil hydraulic circuit VI, electric-motor pump, transfer case 15, and selector valve comprises: three-position four-way electromagnetic directional valve I 27,2/2-way solenoid directional control valve I 29, two-bit triplet solenoid directional control valve 37,2/2-way solenoid directional control valve II 40, three-position four-way electromagnetic directional valve II 41, three-position four-way electromagnetic directional valve III 45,2/2-way solenoid directional control valve III 47; Electric-motor pump comprises: variable displacement pump 14, pending fault accelerate variable displacement pump 16; The signal output of analog signal output card III is connected through each relief valve of connection and oil hydraulic circuit VI, throttle valve, and relief valve comprises: electricity liquid ratio relief valve I 4, electricity liquid ratio relief valve II 6, electricity liquid ratio relief valve III 11, electricity liquid ratio relief valve IV 12, relief valve 20; Throttle valve comprises: throttle valve I 22, throttle valve II 25, throttle valve III 35; Each sensor of oil hydraulic circuit VI is connected through the signal input part of connection with data collecting card II, and sensor comprises: flow transducer I 8, flow transducer II 10, hydrostatic sensor I 19, hydrostatic sensor IV 26, speed probe 31, temperature transducer I 32, torque sensor 33, hydrostatic sensor III 34, hydrostatic sensor V 38, hydrostatic sensor VI 42, hydrostatic sensor VII 43, hydrostatic sensor VIII 44, temperature transducer II 48, hydrostatic sensor II 50; The signal output part of data collecting card II is connected through the signal input part of connection with process control machine I; Process control machine I, data collecting card II, PLC IV, analog signal output card III, oil hydraulic circuit VI are all affixed with transhipment vehicle frame V; Oil hydraulic circuit VI is made up of power source system a, fault acceleration branch road b, motor detection branch c, valve group detection branch d, pump detection branch e, oil temperature oil level indicator I 1, fuel tank I 3, fuel tank II 2, electricity liquid ratio relief valve I 4, oil temperature oil level indicator II 5, liquid proportional relief valve II 6, electro-hydraulic proportional reducing valve I 7, flow transducer I 8, electro-hydraulic proportional reducing valve II 9, flow transducer II 10, electricity liquid ratio relief valve III 11, electricity liquid ratio relief valve IV 12, and wherein oil temperature oil level indicator I 1 and oil temperature oil level indicator II 5 are connected fuel tank I 3 and fuel tank II 2 respectively; The one end at the pending fault acceleration variable displacement pump 16 import place of power source system a is connected with fuel tank I 3 as filler opening, and filter I 13 import of power source system a is at one end connected with fuel tank II 2 as filler opening; Filter II 18 institute of power source system a is at one end as oil outlet connecting motor detection branch c, valve group detection branch d and pump detection branch e, filter II 18 exports and connects electro-hydraulic proportional reducing valve II 9 import connection, four bypasses are provided with between filter II 18 and electro-hydraulic proportional reducing valve II 9, article one, bypass connects relief valve 20, one-way valve 21 and fuel tank II 2, Article 2 bypass connects electro-hydraulic proportional reducing valve I 7 import, Article 3 bypass connects electro-hydraulic proportional reducing valve III 36 import, the import of Article 4 bypass connecting fluid pressure sensor I 19; The pending fault of power source system a accelerates variable displacement pump 16 outlet and at one end connects fault acceleration branch road b, and pending fault accelerates variable displacement pump 16 import connection throttle valve I 22 and exports, and pending fault accelerates variable displacement pump 16 outlet and connects throttle valve II 25 import; Be provided with bypass branch between the relief valve 20 of power source system a and one-way valve 21, bypass branch connects electricity liquid ratio relief valve I 4 and exports; Fuel tank I 3 connects that fault accelerates throttle valve I 22 import in branch road b, throttle valve II 25 exports respectively; The three-position four-way electromagnetic directional valve I 27P mouth of flow transducer I 8 outlet and electricity liquid ratio relief valve II 6 import difference connecting motor detection branch c and T mouth; Electro-hydraulic proportional reducing valve III 36 import of valve group detection branch d connects filter II 18 and exports, throttle valve III 35 exports and connects electricity liquid ratio relief valve I 4 import, three-position four-way electromagnetic directional valve II 41P mouth connection traffic sensor II 10 outlet of valve group detection branch d, be provided with bypass connecting fluid pressure sensor VII 43 between three-position four-way electromagnetic directional valve II 41P mouth and flow transducer II 10, three-position four-way electromagnetic directional valve II 41T mouth connects electricity liquid ratio relief valve III 11 import; Three-position four-way electromagnetic directional valve III 45P mouth connection traffic sensor II 10 outlet of pump detection branch e, bypass connecting fluid pressure sensor VIII 44 is provided with between three-position four-way electromagnetic directional valve II 41P mouth and flow transducer II 10, three-position four-way electromagnetic directional valve III 45T mouth connects electricity liquid ratio relief valve IV 12 import, three-position four-way electromagnetic directional valve III 45T mouth be connected two bypasses between electricity liquid ratio relief valve IV 12,, a bypass connecting fluid pressure sensor II 50, another bypass connects double overflow brake valve II 46B mouth; Oil temperature oil level indicator I 1 and oil temperature oil level indicator II 5 are connected fuel tank I 3 and fuel tank II 2 respectively; Electro-hydraulic proportional reducing valve I 7 exports the import of connection traffic sensor I 8; Electro-hydraulic proportional reducing valve II 9 exports the import of connection traffic sensor II 10; Electricity liquid ratio relief valve IV 12 exports and connects electricity liquid ratio relief valve I 4 import, electricity liquid ratio relief valve IV 12 exports and be provided with three bypasses between electricity liquid ratio relief valve I 4 import, Article 1, bypass connects electricity liquid ratio relief valve III 11 outlet, Article 2 bypass connects two-bit triplet solenoid directional control valve 37B mouth, and Article 3 bypass connects electricity liquid ratio relief valve II 6 and exports.
Described power source system a is accelerated variable displacement pump 16, motor 17, filter II 18, hydrostatic sensor I 19, relief valve 20 and one-way valve 21 formed by filter I 13, variable displacement pump 14, transfer case 15, pending fault, its middle filtrator I 13, variable displacement pump 14, filter II 18, relief valve 20 are connected successively with one-way valve 21, filter I 13 import is connected fuel tank II 2 with one-way valve 21 outlet, be provided with bypass connecting fluid pressure sensor I 19 between filter II 18 and relief valve 20, variable displacement pump 14 connects motor 17 through transfer case 15 right-hand member; Filter II 18 exports and connects electro-hydraulic proportional reducing valve II 9 import, four bypasses are provided with between filter II 18 and electro-hydraulic proportional reducing valve II 9, article one, bypass is connected fuel tank II 2 through relief valve 20 with one-way valve 21, Article 2 bypass connects electro-hydraulic proportional reducing valve I 7 import, Article 3 bypass connects throttle valve III 35 import, the import of Article 4 bypass connecting fluid pressure sensor I 19; Pending fault accelerates variable displacement pump 16 import and connects throttle valve I 22 outlet, and pending fault accelerates variable displacement pump 16 outlet and connects throttle valve II 25 import, and pending fault accelerates variable displacement pump 16 and is connected with motor 17 through transfer case 15 left end; One end that pending fault accelerates variable displacement pump 16 import place connects fuel tank I 3 as filler opening, and the one end at filter I 13 import place connects fuel tank II 2 as filler opening; Be provided with bypass branch between relief valve 20 and one-way valve 21 and connect electricity liquid ratio relief valve I 4 import.
Described fault accelerates branch road b by throttle valve I 22, U-shaped pipe manometer I 23, U-shaped pipe manometer II 24 and throttle valve II 25 form, wherein throttle valve I 22, pending fault accelerates variable displacement pump 16 and is connected successively with throttle valve II 25, throttle valve I 22 import is connected with fuel tank I 3 through oil pipe, throttle valve I 22 outlet is accelerated variable displacement pump 16 import with pending fault and is connected, throttle valve I 22 outlet and pending fault accelerate set bypass branch between variable displacement pump 16 import and are connected with U-shaped pipe manometer I 23, throttle valve II 25 import and pending fault accelerate variable displacement pump 16 and export and be connected, throttle valve II 25 import and pending fault accelerate variable displacement pump 16 export between set bypass branch be connected with U-shaped pipe manometer II 24, throttle valve II 25 outlet is connected with fuel tank I 3.
Described motor detection branch c is made up of hydrostatic sensor IV 26, three-position four-way electromagnetic directional valve I 27, double overflow brake valve I 28,2/2-way solenoid directional control valve I 29, motor to be measured 30, speed probe 31, temperature transducer I 32, torque sensor 33 and hydrostatic sensor III 34, wherein three-position four-way electromagnetic directional valve I 27P mouth connection traffic sensor I 8 outlet, is provided with bypass connecting fluid pressure sensor IV 26 between three-position four-way electromagnetic directional valve I 27P mouth and flow transducer I 8; Three-position four-way electromagnetic directional valve I 27A mouth connects motor 30 one end to be measured, two bypasses are provided with between three-position four-way electromagnetic directional valve I 27A mouth and motor to be measured 30, article one, bypass connects double overflow brake valve I 28A mouth, and another bypass connects 2/2-way solenoid directional control valve I 29 and exports; Motor 30 the other end to be measured connects three-position four-way electromagnetic directional valve I 27B mouth, is provided with bypass and is connected double overflow brake valve I 28C mouth between motor 30 the other end to be measured with three-position four-way electromagnetic directional valve I 27B mouth; Three-position four-way electromagnetic directional valve I 27T mouth connects electricity liquid ratio relief valve II 6 import, two bypasses are provided with between three-position four-way electromagnetic directional valve I 27T mouth and electricity liquid ratio relief valve II 6,, a bypass connecting fluid pressure sensor III 34, another bypass connects double overflow brake valve I 28B mouth; 2/2-way solenoid directional control valve I 29 import connects double overflow brake valve I 28D mouth; Speed probe 31, temperature transducer I 32 are connected with motor 30 to be measured with torque sensor 33.
Described valve group detection branch d by throttle valve III 35, electro-hydraulic proportional reducing valve III 36, two-bit triplet solenoid directional control valve 37, hydrostatic sensor V 38, treat that side valve group 39,2/2-way solenoid directional control valve II 40, three-position four-way electromagnetic directional valve II 41, hydrostatic sensor VI 42 and hydrostatic sensor VII 43 form, wherein electro-hydraulic proportional reducing valve III 36 import connect filter II 18 export; Two-bit triplet solenoid directional control valve 37P mouth connects electro-hydraulic proportional reducing valve III 36 and exports, two-bit triplet solenoid directional control valve 37P mouth be provided with bypass branch between electro-hydraulic proportional reducing valve III 36 and be connected throttle valve III 35 import; Two-bit triplet solenoid directional control valve 37A mouth connects the guide oil control end treating side valve group 39, is provided with bypass connecting fluid pressure sensor V 38 between two-bit triplet solenoid directional control valve 37A mouth and the guide oil control end treating side valve group 39; Three-position four-way electromagnetic directional valve II 41P mouth connection traffic sensor II 10 exports, and is provided with bypass connecting fluid pressure sensor VII 43 between three-position four-way electromagnetic directional valve II 41P mouth and flow transducer II 10; Three-position four-way electromagnetic directional valve II 41A mouth connects treats side valve group 39 import, three-position four-way electromagnetic directional valve II 41A mouth with treat to be provided with between side valve group 39 bypass and be connected 2/2-way solenoid directional control valve II 40 and export; Three-position four-way electromagnetic directional valve II 41B mouth connect treats that side valve group 39 exports, three-position four-way electromagnetic directional valve II 41B mouth with treat that being provided with bypass between side valve group 39 is connected 2/2-way solenoid directional control valve II 40 import; Three-position four-way electromagnetic directional valve II 41T mouth connects electricity liquid ratio relief valve III 11 import, is provided with bypass connecting fluid pressure sensor VI 42 between three-position four-way electromagnetic directional valve II 41T mouth and electricity liquid ratio relief valve III 11 import.
Described pump detection branch e is made up of hydrostatic sensor VIII 44, three-position four-way electromagnetic directional valve III 45, double overflow brake valve II 46,2/2-way solenoid directional control valve III 47, temperature transducer II 48, pump to be measured 49 and hydrostatic sensor II 50, wherein three-position four-way electromagnetic directional valve III 45A mouth is connected with pump to be measured 49 one end being connected with temperature transducer II 48, two bypasses are provided with between three-position four-way electromagnetic directional valve III 45A mouth and pump to be measured 49, article one, bypass connects double overflow brake valve II 46A mouth, and another bypass connects 2/2-way solenoid directional control valve III 47 and exports; Three-position four-way electromagnetic directional valve III 45B mouth connects pump 49 the other end to be measured, is provided with bypass and is connected double overflow brake valve II 46C mouth between three-position four-way electromagnetic directional valve III 45B mouth with pump 49 the other end to be measured; Three-position four-way electromagnetic directional valve III 45P mouth exports with flow transducer II 10 and is connected, and is provided with bypass connecting fluid pressure sensor VIII 44 between three-position four-way electromagnetic directional valve III 45P mouth and flow transducer II 10 export; Three-position four-way electromagnetic directional valve III 45T mouth is connected with electricity liquid ratio relief valve IV 12 import, two bypasses are provided with between three-position four-way electromagnetic directional valve III 45T mouth and electricity liquid ratio relief valve IV 12,, a bypass connecting fluid pressure sensor II 50, Article 2 bypass connects double overflow brake valve II 46B mouth; 2/2-way solenoid directional control valve III 47 import connects double overflow brake valve II 46D mouth.
Described U-shaped pipe manometer I 23 is made up of U-shaped plastic pipe I 51, cork stopper I 52, flexible pipe I 53, and wherein flexible pipe I 53 one end is tightly connected through cork stopper I 52 and U-shaped plastic pipe I 51.
Described U-shaped pipe manometer II 24 is made up of U-shaped plastic pipe II 54, cork stopper II 55, flexible pipe II 56, and wherein flexible pipe II 56 one end is tightly connected through cork stopper II 55 and U-shaped plastic pipe II 54.
Functions implementing the present invention mainly comprise fault accelerated test and faut detection, assess two-part.
For fault spped-up function, by process control machine I output order to PLC IV and analog signal output card III, PLC IV exports electrical signal to motor 17, transfer case 15, control pending fault acceleration variable displacement pump 16 to operate, fault is accelerated branch road b and is come into operation, the contaminated fluid of proportioning is by a certain percentage housed in fuel tank I 3, and the fluid filled in fuel tank I 3 is passed to pending fault through oil pipe and accelerates variable displacement pump 16.
Analog signal output card III exports certain analogue signal to throttle valve I 22 and throttle valve II 25, realizes the inlet and outlet pressure of pilot line, last U-shaped pipe manometer I 23 and U-shaped pipe manometer II 24 display pressure at two ends data.For specific pressure, fault acceleration effect is certain.Comprehensive by with upper type, make pending fault accelerate variable displacement pump 16 and work under abnormal operating state, reach the effect of fault acceleration with this, realize the function of acceleration equipment Performance Evaluation.
Faut detection, evaluation part is divided into motor detection branch c, valve group detection branch d and pump detection branch e tri-part, work as faut detection, during evaluation part work, first self leak detection is carried out to Whole Equipment, when leak detection function plays a role, by process control machine I output order to PLC IV and analog signal output card III, PLC IV exports electrical signal to motor 17, transfer case 15, controlled variable pump 14 operates, faut detection, evaluation part comes into operation, in fuel tank II 2, qualified fluid is housed, the fluid filled in fuel tank II 2 is passed to motor detection branch c through oil pipe, valve group detection branch d or pump detection branch e.
Filter I 13, filter II 18 pairs of fluid carry out filtration, hydrostatic sensor I 19 is for measuring hydraulic fluid port pressure, relief valve 20 is set up in advance, for carrying out protective action to branch road, avoid that oil pressure is too high causes thrashing, when variable displacement pump 14 abnormal work causes the fuel-displaced overpressure of equipment, the automatic conducting of relief valve, by hydraulic oil directly logical oil sump tank;
Wherein double overflow brake valve I 28, double overflow brake valve II 46 are set up in advance, realize fluid and compensate, for the protection of motor 30 to be measured and pump 49 to be measured;
Control electricity liquid ratio relief valve I 4 by analog signal output card III to lock; Electricity liquid ratio relief valve II 6, electro-hydraulic proportional reducing valve I 7, electro-hydraulic proportional reducing valve II 9, electricity liquid ratio relief valve III 11, electricity liquid ratio relief valve IV 12, throttle valve I 35 and electro-hydraulic proportional reducing valve III 36 are opened;
Three-position four-way electromagnetic directional valve I 27, three-position four-way electromagnetic directional valve II 41 and the conducting of three-position four-way electromagnetic directional valve III 45 any direction;
2/2-way solenoid directional control valve I 29, two-bit triplet solenoid directional control valve 37 realize arbitrarily that PB is logical or PA logical, 2/2-way solenoid directional control valve II 40 and 2/2-way solenoid directional control valve III 47 conducting.
Observe flow transducer I 8 after stable and whether flow transducer II 10 has reading change, if there is reading to be changed to leakage, if non-metering change, for not leak, and pass through data collecting card II by data logging in process control machine I,
After detection completes, all relief valves, reduction valve, throttle valve are opened, motor stalling.
When the motor detection branch c of faut detection, evaluation part plays a role, control electricity liquid ratio relief valve I 4 by analog signal output card III and loosen;
Electricity liquid ratio relief valve II 6, electro-hydraulic proportional reducing valve I 7 are opened and are adjusted to certain parameter, realize the control to working portion pressure;
Three-position four-way electromagnetic directional valve I 27 forward conduction and reverse conducting, realize positive and negative rotation of motor;
By hydrostatic sensor IV 26, hydrostatic sensor III 34 and flow transducer I 8 carry out the main measurement oil circuit pressure of motor, the detection of flow, speed probe 31, temperature transducer I 32 and torque sensor 33 realize revolution speed, the detection of temperature and output torque, and send data in process control machine I by data collecting card II, carry out analysis and draw Pressure-flow curves, and realize revolution speed, the detection of temperature and output torque, simultaneously in process control machine I, compare with the use standard of equipment, detect, assess it whether can continue to use.
After detection completes, motor stalling, afterwards again by all relief valves, reduction valve, throttle valve locking, all selector valves disconnect.
When valve group detection branch d plays a role, when measuring general valve, when namely control port does not play a role, electric machine rotation, controls electricity liquid ratio relief valve I 4 by analog signal output card III and loosens; Electro-hydraulic proportional reducing valve II 9 and electricity liquid ratio relief valve III 11 are opened and are adjusted to certain parameter, realize the control to working portion pressure; Three-position four-way electromagnetic directional valve II 41. forward conduction and reverse conducting, realize the forward and reverse of oil circuit; By flow transducer II 10, hydrostatic sensor VI 42, the detection of hydrostatic sensor VII 43 realization to oil circuit pressure, flow, and send data in process control machine I by data collecting card II, carry out analysis and draw Pressure-flow curves, in order to detect its ducting capacity.
When control port plays a role, if during control procedure between Survey control hydraulic fluid port pressure and working connection, shutoff valve I 35 cuts out, and controls electricity liquid ratio relief valve I 4, electro-hydraulic proportional reducing valve II 9 and electricity liquid ratio relief valve III 11 open completely by analog signal output card III.Electro-hydraulic proportional reducing valve III 36 is opened and is adjusted to certain parameter, two-bit triplet solenoid directional control valve 37PA conducting, regulates electro-hydraulic proportional reducing valve III 36, obtains pilot pressure data by hydrostatic sensor V 38, and flow transducer II 10 obtains working connection data on flows.And send data in process control machine I by data collecting card II, pilot pressure-flow curve, valve opening pressure, valve closing pressure, valve closing process controlling curve and valve opening process controlling curve etc. can be obtained, in order to detect its control ability.
If when measuring its dynamic response process, shutoff valve I 35 cuts out, and controls electricity liquid ratio relief valve I 4 open completely by analog signal output card III.Electro-hydraulic proportional reducing valve II 9 and electricity liquid ratio relief valve III 11 are opened completely.Electro-hydraulic proportional reducing valve III 36 is opened and is adjusted to certain parameter, pressure accumulation is carried out in the first PA conducting of two-bit triplet solenoid directional control valve 37, regulate electro-hydraulic proportional reducing valve III 36, obtain pilot pressure data by hydrostatic sensor V 38, obtain data on flows by flow transducer II 10.Rear PB conducting, retentive control hydraulic fluid port constant pressure.Closed completely by electro-hydraulic proportional reducing valve III 36, open shutoff valve I 35 pressure release, PA transient switching carries out pressure release to control port again, obtains flow dynamics response curve data by flow transducer II 10.
For single lubricating oil interlocked valve, not only can realize the detection main measurement oil circuit of valve group being carried out to inlet and outlet pressure, flow, again through the computing of process control machine I, can be in the hope of, working connection Pressure-flow curves, pilot pressure-flow curve, valve opening pressure numerical value, valve closing pressure numerical value, valve closing process controlling curve, valve opening process controlling curve and the dynamic response curve between control port and working connection etc., simultaneously in process control machine I, compare with the use standard of equipment, detect, assess its whether can continue use.
When the pump detection branch e of faut detection, evaluation part plays a role, control electricity liquid ratio relief valve I 4 by analog signal output card III and loosen;
Electro-hydraulic proportional reducing valve II 9 and electricity liquid ratio relief valve IV 12 are opened and are adjusted to certain parameter, realize the control to working portion pressure;
Three-position four-way electromagnetic directional valve III 45 forward conduction and reverse conducting, realize the clockwise and anticlockwise of pump;
The detection to the main measurement oil circuit pressure of pump, flow is carried out by hydrostatic sensor VIII 44, hydrostatic sensor II 50 and flow transducer II 10, temperature transducer II 48 realizes the detection to pump temperature, and send data in process control machine I by data collecting card II, carry out analysis and draw Pressure-flow curves, and the detection realized pump temperature, simultaneously in process control machine I, compare with the use standard of equipment, detect, assess it and whether can continue to use.
After detection completes, all relief valves, reduction valve, throttle valve are opened, motor stalling.
The present invention compared with prior art has the following advantages and beneficial effect:
1. Detection of content is comprehensive, and testing process is simple, except Pressure-flow curves, outside the routine datas such as pilot pressure-flow curve, cracking pressure and closing pressure, can realize the assessment of some control port dynamic response characteristics;
2. can realize the detection of self most of area leakage;
3. add fault acceleration system, acceleration equipment Performance Evaluation, improves working efficiency.
Accompanying drawing explanation
Fig. 1 is that a kind of hydraulic system detects the overall structure schematic diagram accelerating combined system with fault fast
Fig. 2 is hydraulic loop structure schematic diagram
Fig. 3 is the structural representation of power source system
Fig. 4 is the structural representation that fault accelerates branch road
Fig. 5 is the structural representation of motor detection branch
Fig. 6 is the structural representation of valve group detection branch
Fig. 7 is the structural representation of pump detection branch
Fig. 8 is the structural representation of U-shaped pipe manometer I
Fig. 9 is the structural representation of U-shaped pipe manometer II
Figure 10 is three-position four-way electromagnetic directional valve I interface diagram
Figure 11 is double overflow brake valve I interface diagram
Figure 12 is two-bit triplet solenoid directional control valve interface diagram
Figure 13 is three-position four-way electromagnetic directional valve II interface diagram
Figure 14 is three-position four-way electromagnetic directional valve III interface diagram
Figure 15 is double overflow brake valve II interface diagram
Including: Ⅰ. Industrial Ⅱ. The data acquisition card Ⅲ. Analog signal output card Ⅳ. PLC controller Ⅴ. Transfer frame Ⅵ. Hydraulic circuit of a. b. power system fault accelerated branch c. motor testing branch d. detection branch valve group e. pump testing branch 1. The oil temperature oil level meter Ⅰ 2. Tank Ⅱ 3. Tank Ⅰ 4. Electro-hydraulic proportional relief valve Ⅰ 5. Oil temperature oil level meter Ⅱ 6. Electro-hydraulic proportional relief valve Ⅱ 7. Electro-hydraulic proportional pressure reducing valve Ⅰ 8. Flow sensor Ⅰ 9. Electro-hydraulic proportional pressure reducing valve Ⅱ 10. Flow sensor Ⅱ 11. Electro-hydraulic proportional relief valve Ⅲ 12. Electro-hydraulic proportional relief valve Ⅳ 13. Filter Ⅰ 14. Variable pump 15. Thansfer 16. Stay fault speed variable pump 17. 18. The motor filter Ⅱ 19. Hydraulic sensor Ⅰ 20. The overflow valve 21. 22. The check valve throttle Ⅰ 23. The u-tube pressure apparatus Ⅰ 24. The u-tube pressure apparatus Ⅱ 25. The throttle Ⅱ 26. Hydraulic sensor Ⅳ 27 three four-way electromagnetic directional valve Ⅰ 28. Double overflow brake valve Ⅰ 29 two two-way electromagnetic directional valveⅠ 30. Motor under test 31. 32. The speed sensor temperature sensor Ⅰ 33. Torque sensor 34 hydraulic sensor Ⅲ 35 throttle Ⅲ 36 electro-hydraulic proportional pressure reducing valve Ⅲ 37. Two tee electromagnetic directional valve 38. The hydraulic pressure sensor Ⅴ 39. The valve under test group 40. Two two-way electromagnetic directional valve Ⅱ 41. The three four-way electromagnetic directional valve Ⅱ 42. The hydraulic pressure sensor Ⅵ 43. The hydraulic pressure sensor Ⅶ 44. 45. The hydraulic pressure sensor Ⅷ three four-way electromagnetic directional valve Ⅲ 46. Double overflow brake valve Ⅱ 47. The two two-way electromagnetic directional valve Ⅲ 48. The temperature sensor Ⅱ 49. 50 for the pump. The hydraulic sensor Ⅱ 51. The u-shaped plastic tubes Ⅰ 52. The cork Ⅰ 53. Hose Ⅰ 54. The u-shaped plastic tubes Ⅱ 55, cork Ⅱ 56. Hose Ⅱ
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
The present invention is achieved through the following technical solutions: a kind of hydraulic system detects fast accelerates combined system with fault, it is characterized in that being made up of process control machine I, data collecting card II, analog signal output card III, PLC IV, transhipment vehicle frame V and oil hydraulic circuit VI, wherein the signal output part of process control machine I is connected through the signal input part of connection with PLC IV and analog signal output card III; The signal output of PLC IV is connected through each selector valve of connection and oil hydraulic circuit VI, electric-motor pump, transfer case 15, and selector valve comprises: three-position four-way electromagnetic directional valve I 27,2/2-way solenoid directional control valve I 29, two-bit triplet solenoid directional control valve 37,2/2-way solenoid directional control valve II 40, three-position four-way electromagnetic directional valve II 41, three-position four-way electromagnetic directional valve III 45,2/2-way solenoid directional control valve III 47; Electric-motor pump comprises: variable displacement pump 14, pending fault accelerate variable displacement pump 16; The signal output of analog signal output card III is connected through each relief valve of connection and oil hydraulic circuit VI, throttle valve, and relief valve comprises: electricity liquid ratio relief valve I 4, electricity liquid ratio relief valve II 6, electricity liquid ratio relief valve III 11, electricity liquid ratio relief valve IV 12, relief valve 20; Throttle valve comprises: throttle valve I 22, throttle valve II 25, throttle valve III 35; Each sensor of oil hydraulic circuit VI is connected through the signal input part of connection with data collecting card II, and sensor comprises: flow transducer I 8, flow transducer II 10, hydrostatic sensor I 19, hydrostatic sensor IV 26, speed probe 31, temperature transducer I 32, torque sensor 33, hydrostatic sensor III 34, throttle valve III 35, hydrostatic sensor V 38, hydrostatic sensor VI 42, hydrostatic sensor VII 43, hydrostatic sensor VIII 44, temperature transducer II 48, hydrostatic sensor II 50; The signal output part of data collecting card II is connected through the signal input part of connection with process control machine I; Process control machine I, data collecting card II, PLC IV, analog signal output card III, oil hydraulic circuit VI are all affixed with transhipment vehicle frame V.
Oil hydraulic circuit VI is made up of power source system a, fault acceleration branch road b, motor detection branch c, valve group detection branch d, pump detection branch e, oil temperature oil level indicator I 1, fuel tank I 3, fuel tank II 2, electricity liquid ratio relief valve I 4, oil temperature oil level indicator II 5, liquid proportional relief valve II 6, electro-hydraulic proportional reducing valve I 7, flow transducer I 8, electro-hydraulic proportional reducing valve II 9, flow transducer II 10, electricity liquid ratio relief valve III 11, electricity liquid ratio relief valve IV 12, and wherein oil temperature oil level indicator I 1 and oil temperature oil level indicator II 5 are connected fuel tank I 3 and fuel tank II 2 respectively.
The one end at the pending fault acceleration variable displacement pump 16 import place of power source system a is connected with fuel tank I 3 as filler opening, and filter I 13 import of power source system a is at one end connected with fuel tank II 2 as filler opening.
The filter II 18 of power source system a is at one end connected with pump detection branch e as oil outlet connecting motor detection branch c, valve group detection branch d, filter II 18 exports and connects electro-hydraulic proportional reducing valve II 9 import connection, four bypasses are provided with between filter II 18 and electro-hydraulic proportional reducing valve II 9, article one, bypass connects relief valve 20, one-way valve 21 and fuel tank II 2, Article 2 bypass connects electro-hydraulic proportional reducing valve I 7 import, Article 3 bypass connects electro-hydraulic proportional reducing valve III 36 import, the import of Article 4 bypass connecting fluid pressure sensor I 19.
The pending fault of power source system a accelerates variable displacement pump 16 outlet and at one end connects fault acceleration branch road b, and pending fault accelerates variable displacement pump 16 import connection throttle valve I 22 and exports, and pending fault accelerates variable displacement pump 16 outlet and connects throttle valve II 25 import.
Be provided with bypass branch between the relief valve 20 of power source system a and one-way valve 21, bypass branch connects electricity liquid ratio relief valve I 4 and exports.
Fuel tank I 3 connects that fault accelerates throttle valve I 22 import in branch road b, throttle valve II 25 exports respectively.
The three-position four-way electromagnetic directional valve I 27P mouth of flow transducer I 8 outlet and electricity liquid ratio relief valve II 6 import difference connecting motor detection branch c and T mouth.
Electro-hydraulic proportional reducing valve III 36 import of valve group detection branch d connects filter II 18 and exports, throttle valve III 35 exports and connects electricity liquid ratio relief valve I 4 import, three-position four-way electromagnetic directional valve II 41P mouth connection traffic sensor II 10 outlet of valve group detection branch d, be provided with bypass connecting fluid pressure sensor VII 43 between three-position four-way electromagnetic directional valve II 41P mouth and flow transducer II 10, three-position four-way electromagnetic directional valve II 41T mouth connects electricity liquid ratio relief valve III 11 import.
Three-position four-way electromagnetic directional valve III 45P mouth connection traffic sensor II 10 outlet of pump detection branch e, bypass connecting fluid pressure sensor VIII 44 is provided with between three-position four-way electromagnetic directional valve II 41P mouth and flow transducer II 10, three-position four-way electromagnetic directional valve III 45T mouth connects electricity liquid ratio relief valve IV 12 import, three-position four-way electromagnetic directional valve III 45T mouth be connected two bypasses between electricity liquid ratio relief valve IV 12,, a bypass connecting fluid pressure sensor II 50, another bypass connects double overflow brake valve II 46B mouth.
Oil temperature oil level indicator I 1 and oil temperature oil level indicator II 5 are connected fuel tank I 3 and fuel tank II 2 respectively; Electro-hydraulic proportional reducing valve I 7 exports the import of connection traffic sensor I 8; Electro-hydraulic proportional reducing valve II 9 exports the import of connection traffic sensor II 10; Electricity liquid ratio relief valve IV 12 exports and connects electricity liquid ratio relief valve I 4 import, electricity liquid ratio relief valve IV 12 exports and be provided with three bypasses between electricity liquid ratio relief valve I 4 import, Article 1, bypass connects electricity liquid ratio relief valve III 11 outlet, Article 2 bypass connects two-bit triplet solenoid directional control valve 37B mouth, and Article 3 bypass connects electricity liquid ratio relief valve II 6 and exports.
Power source system a is accelerated variable displacement pump 16, motor 17, filter II 18, hydrostatic sensor I 19, relief valve 20 and one-way valve 21 formed by filter I 13, variable displacement pump 14, transfer case 15, pending fault, its middle filtrator I 13, variable displacement pump 14, filter II 18, relief valve 20 are connected successively with one-way valve 21, filter I 13 import is connected fuel tank II 2 with one-way valve 21 outlet, be provided with bypass connecting fluid pressure sensor I 19 between filter II 18 and relief valve 20, variable displacement pump 14 connects motor 17 through transfer case 15 right-hand member; Filter II 18 exports and connects electro-hydraulic proportional reducing valve II 9 import, four bypasses are provided with between filter II 18 and electro-hydraulic proportional reducing valve II 9, article one, bypass is connected fuel tank II 2 through relief valve 20 with one-way valve 21, Article 2 bypass connects electro-hydraulic proportional reducing valve I 7 import, Article 3 bypass connects throttle valve III 35 import, the import of Article 4 bypass connecting fluid pressure sensor I 19; Pending fault accelerates variable displacement pump 16 import and connects throttle valve I 22 outlet, and pending fault accelerates variable displacement pump 16 outlet and connects throttle valve II 25 import, and pending fault accelerates variable displacement pump 16 and is connected with motor 17 through transfer case 15 left end; One end that pending fault accelerates variable displacement pump 16 import place connects fuel tank I 3 as filler opening, and the one end at filter I 13 import place connects fuel tank II 2 as filler opening; Be provided with bypass branch between relief valve 20 and one-way valve 21 and connect electricity liquid ratio relief valve I 4 import.
Fault accelerates branch road b by throttle valve I 22, U-shaped pipe manometer I 23, U-shaped pipe manometer II 24 and throttle valve II 25 form, wherein throttle valve I 22, pending fault accelerates variable displacement pump 16 and is connected successively with throttle valve II 25, throttle valve I 22 import is connected with fuel tank I 3 through oil pipe, throttle valve I 22 outlet is accelerated variable displacement pump 16 import with pending fault and is connected, throttle valve I 22 outlet and pending fault accelerate set bypass branch between variable displacement pump 16 import and are connected with U-shaped pipe manometer I 23, throttle valve II 25 import and pending fault accelerate variable displacement pump 16 and export and be connected, throttle valve II 25 import and pending fault accelerate variable displacement pump 16 export between set bypass branch be connected with U-shaped pipe manometer II 24, throttle valve II 25 outlet is connected with fuel tank I 3.
Motor detection branch c is made up of hydrostatic sensor IV 26, three-position four-way electromagnetic directional valve I 27, double overflow brake valve I 28,2/2-way solenoid directional control valve I 29, motor to be measured 30, speed probe 31, temperature transducer I 32, torque sensor 33 and hydrostatic sensor III 34, wherein three-position four-way electromagnetic directional valve I 27P mouth connection traffic sensor I 8 outlet, is provided with bypass connecting fluid pressure sensor IV 26 between three-position four-way electromagnetic directional valve I 27P mouth and flow transducer I 8; Three-position four-way electromagnetic directional valve I 27A mouth connects motor 30 one end to be measured, two bypasses are provided with between three-position four-way electromagnetic directional valve I 27A mouth and motor to be measured 30, article one, bypass connects double overflow brake valve I 28A mouth, and another bypass connects 2/2-way solenoid directional control valve I 29 and exports; Motor 30 the other end to be measured connects three-position four-way electromagnetic directional valve I 27B mouth, is provided with bypass and is connected double overflow brake valve I 28C mouth between motor 30 the other end to be measured with three-position four-way electromagnetic directional valve I 27B mouth; Three-position four-way electromagnetic directional valve I 27T mouth connects electricity liquid ratio relief valve II 6 import, two bypasses are provided with between three-position four-way electromagnetic directional valve I 27T mouth and electricity liquid ratio relief valve II 6,, a bypass connecting fluid pressure sensor III 34, another bypass connects double overflow brake valve I 28B mouth; 2/2-way solenoid directional control valve I 29 import connects double overflow brake valve I 28D mouth; Speed probe 31, temperature transducer I 32 are connected with motor 30 to be measured with torque sensor 33.
Valve group detection branch d by throttle valve III 35, electro-hydraulic proportional reducing valve III 36, two-bit triplet solenoid directional control valve 37, hydrostatic sensor V 38, treat that side valve group 39,2/2-way solenoid directional control valve II 40, three-position four-way electromagnetic directional valve II 41, hydrostatic sensor VI 42 and hydrostatic sensor VII 43 form, wherein electro-hydraulic proportional reducing valve III 36 import connect filter II 18 export; Two-bit triplet solenoid directional control valve 37P mouth connects electro-hydraulic proportional reducing valve III 36 and exports, two-bit triplet solenoid directional control valve 37P mouth be provided with bypass branch between electro-hydraulic proportional reducing valve III 36 and be connected throttle valve III 35 import; Two-bit triplet solenoid directional control valve 37A mouth connects the guide oil control end treating side valve group 39, is provided with bypass connecting fluid pressure sensor V 38 between two-bit triplet solenoid directional control valve 37A mouth and the guide oil control end treating side valve group 39; Three-position four-way electromagnetic directional valve II 41P mouth connection traffic sensor II 10 exports, and is provided with bypass connecting fluid pressure sensor VII 43 between three-position four-way electromagnetic directional valve II 41P mouth and flow transducer II 10; Three-position four-way electromagnetic directional valve II 41A mouth connects treats side valve group 39 import, three-position four-way electromagnetic directional valve II 41A mouth with treat to be provided with between side valve group 39 bypass and be connected 2/2-way solenoid directional control valve II 40 and export; Three-position four-way electromagnetic directional valve II 41B mouth connect treats that side valve group 39 exports, three-position four-way electromagnetic directional valve II 41B mouth with treat that being provided with bypass between side valve group 39 is connected 2/2-way solenoid directional control valve II 40 import; Three-position four-way electromagnetic directional valve II 41T mouth connects electricity liquid ratio relief valve III 11 import, is provided with bypass connecting fluid pressure sensor VI 42 between three-position four-way electromagnetic directional valve II 41T mouth and electricity liquid ratio relief valve III 11 import.
Pump detection branch e is made up of hydrostatic sensor VIII 44, three-position four-way electromagnetic directional valve III 45, double overflow brake valve II 46,2/2-way solenoid directional control valve III 47, temperature transducer II 48, pump to be measured 49 and hydrostatic sensor II 50, wherein three-position four-way electromagnetic directional valve III 45A mouth is connected with pump to be measured 49 one end being connected with temperature transducer II 48, two bypasses are provided with between three-position four-way electromagnetic directional valve III 45A mouth and pump to be measured 49, article one, bypass connects double overflow brake valve II 46A mouth, and another bypass connects 2/2-way solenoid directional control valve III 47 and exports; Three-position four-way electromagnetic directional valve III 45B mouth connects pump 49 the other end to be measured, is provided with bypass and is connected double overflow brake valve II 46C mouth between three-position four-way electromagnetic directional valve III 45B mouth with pump 49 the other end to be measured; Three-position four-way electromagnetic directional valve III 45P mouth exports with flow transducer II 10 and is connected, bypass connecting fluid pressure sensor VIII 44 is provided with between three-position four-way electromagnetic directional valve III 45P mouth and flow transducer II 10 export, three-position four-way electromagnetic directional valve III 45T mouth is connected with electricity liquid ratio relief valve IV 12 import, two bypasses are provided with between three-position four-way electromagnetic directional valve III 45T mouth and electricity liquid ratio relief valve IV 12,, a bypass connecting fluid pressure sensor II 50, Article 2 bypass connects double overflow brake valve II 46B mouth; 2/2-way solenoid directional control valve III 47 import connects double overflow brake valve II 46D mouth.
U-shaped pipe manometer I 23 is made up of U-shaped plastic pipe I 51, cork stopper I 52, flexible pipe I 53, and wherein flexible pipe I 53 one end is tightly connected through cork stopper I 52 and U-shaped plastic pipe I 51.
U-shaped pipe manometer II 24 is made up of U-shaped plastic pipe II 54, cork stopper II 55, flexible pipe II 56, and wherein flexible pipe II 56 one end is tightly connected through cork stopper II 55 and U-shaped plastic pipe II 54.
Claims (8)
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