CN104697785A - System and method for testing no-load running-in of high-power hydraulic automatic gearbox - Google Patents
System and method for testing no-load running-in of high-power hydraulic automatic gearbox Download PDFInfo
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- CN104697785A CN104697785A CN201410251918.3A CN201410251918A CN104697785A CN 104697785 A CN104697785 A CN 104697785A CN 201410251918 A CN201410251918 A CN 201410251918A CN 104697785 A CN104697785 A CN 104697785A
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Abstract
The invention discloses a system and a method for testing no-load running-in of a high-power hydraulic automatic gearbox. The system comprises the to-be-tested gearbox which is connected with a gearbox controller, a torque sensor and a rotating speed sensor, the torque sensor is connected with a torque gauge and a driving motor, the driving motor is connected with a frequency converter, the rotating speed sensor is connected with an electromagnetic brake which is connected with a switching value module, an oil pressure sensor, an oil quantity sensor and an oil temperature sensor are arranged on the to-be-tested gearbox which is connected with an oil feeding and discharging device and a heating and radiating device, the oil pressure sensor, the oil quantity sensor and the oil temperature sensor are connected with a data acquiring module, and all parts mentioned above are connected with a controller. The system and the method for testing the no-load running-in of the high-power hydraulic automatic gearbox are applicable to delivery running-in test of maximal-input-power automatic gearboxes and used for testing and acquiring relative running-in data of the gearboxes at different rotating speeds within a certain running time.
Description
Technical field
The present invention relates to the unloaded break-in test macro of a kind of high-power hydraulic automatic speed variator and method of testing.
Background technology
Use along with hydraulic automatic speed variator is increasingly extensive on automobile, increasing commercial car and heavy special vehicle use high-power hydraulic automatic speed variator, the market of high-power hydraulic automatic speed variator and market in repair service will be larger, the necessary equipment that the unloaded break-in test macro of high-power hydraulic automatic speed variator will be big-and-middle-sized vehicle maintenance and repair enterprise and related scientific research institutes.
At present, existing automatic transmission test macro all refers to the miniwatt automatic transmission of about the 75KW for car, the testing table of indication all refers to performance test stand, but not unloaded break-in test macro (performance test is debugged automatic transmission exactly, gearshift parameter setting.And whether the performance index that unloaded running-in test fundamental purpose is exactly the Rear Derailleur of inspection assembling meet the designing requirement of whole variator), can not meet the technology needs that " 300-650 horsepower high-power " " fluid power " automatic transmission " break-in " is tested, and our " 300 horsepowers-650 horsepowers high-power " " fluid power " automatic transmission " break-in " testing table not a concept.Part domestic manufacturer has started the development of car miniwatt automatic transmission test macro, be mainly used in carrying out Bench Experimental Study and fault analysis to various car hydraulic controlling type and electro-hydraulic control formula automatic transmission, but because technical force is not enough, the test macro technology content developed, automaticity are lower, the test of some project can only use manual operation, accuracy rate is lower, and test item is less.
Summary of the invention
The present invention solves the technical matters existed in prior art, provides the unloaded break-in test macro of a kind of high-power hydraulic automatic speed variator and method of testing thereof.The unloaded break-in test macro of high-power hydraulic automatic speed variator of the present invention is applicable to maximal input 500kW, maximum input torque 2650Nm, longitudinal rear-guard hydraulic automatic speed variator within the highest input speed 2700r/min dispatches from the factory unloaded running-in test, and test gathers the relevant unloaded data of wheel box under different rotating speeds in operation process.
The present invention solves the technical scheme that its technical matters takes:
The unloaded break-in test macro of a kind of high-power hydraulic automatic speed variator, comprises tested variator, described tested variator respectively with gearbox controller, torque sensor is connected with speed probe, described torque sensor is connected with drive motor with torque gauge, described drive motor is connected with frequency converter, described speed probe is connected with electromagnetic brake, described electromagnetic brake is connected with switching value module, and described tested variator is provided with oil pressure sensor, fuel-quantity transducer and oil temperature sensor, described tested variator and note, jettison gear, add, heat abstractor is connected, described oil pressure sensor, fuel-quantity transducer and oil temperature sensor with data acquisition module be connected, described frequency converter, torque gauge, gearbox controller, switching value module, data acquisition module, tested variator, note, jettison gear, add, heat abstractor is all connected with controller, and described controller comprises industrial computer, control panel and power pack, described industrial computer is connected with power pack with control panel, and described industrial computer is also connected with display.
Main it is emphasised that for the running-in test that dispatches from the factory of high-power automatic transmission according to high-power hydraulic automatic speed variator according to the present invention unloaded break-in test macro profit, whether normally working for detecting tested variator inner kinematic train, oil piping system and electric-control system, detecting the indices of this tested variator when assembling and meeting technical indicator.Also just says in the process of this test, mainly tested variator global design complete after the Function detection of entirety, for adapting to dispatch from the factory running-in test, except rotating speed, moment of torsion, the Measurement & Control that oil pressure, oil temperature, temperature are measured.
In the present invention, so-called high-power be exactly the power input of tested variator at more than 200KW, input torque is at 1250Nm ~ 2560Nm, although be no-load test, the power of selected work drive motor is still at more than 75KW.The running-in test that dispatches from the factory carries out unloaded running-in test exactly after assembling completes, and gathers the data of tested variator under different operating mode now, then judges whether tested variator is qualified when factory assembles by analyzing these data obtained.And need the data gathered mainly to refer to the data such as moment of torsion, rotating speed, oil pressure, oil temperature and oil mass.The instrument and meter of test should have Non-follow control, automatically control two kinds of control modes.The warning under abnormal conditions, conservation treatment and human intervention can be realized.Data record, data processing, form can also be carried out.
Wherein, described power pack powers mainly to tested variator electric-control system; The effect of industrial computer is exactly as host computer, carries out control & monitor to whole system; The data collected mainly are carried out a printing by printer exactly; The power supply of control panel major control whole system, the startup of motor and stopping, and the operation of manual operation system.
In addition, following additional technical feature can also be had according to the unloaded break-in test macro of the high-power hydraulic automatic speed variator of the embodiment of the present invention:
Describedly to add, the pipeline of heat abstractor is connected with the heat interchange mouth of described tested variator, described oil temperature sensor is located at the exit of described heat interchange mouth, the pipeline of described note, jettison gear is connected with the oil sump of described tested variator, and described fuel-quantity transducer is located at the pouring orifice place of described tested variator.The temperature signal detected is passed to industrial computer by oil temperature sensor, when oil temperature exceedes preset value time, industrial computer transmission of signal to adding, heat abstractor dispels the heat; When heating lower than when preset value.The oil mass signal detected is passed to industry control by fuel-quantity transducer, when oil level reaches preset value, stop oiling, when operating modes such as occurring leakage of oil makes hydraulic oil run off and causes oil level lower than preset value, industrial computer transmission of signal gives note, jettison gear carries out oiling, to ensure the stable of oil level in variator operation process.Because high-power hydraulic automatic speed variator needs when carrying out experimental test to refuel, simultaneously in order under simulated condition as much as possible operational mode, the temperature of fluid generally needs to control at about 80 DEG C.And oil temperature is impossible reach so high temperature at physical environment temperature, and fluid is wanted to facilitate field staff to operate in the process of filling, so the carrying out of conveniently tested variator test, designs this structure very necessary.
During gear shift, described industrial computer sends CAN gear command signal to the ECU of tested variator, completes gear shift.During brake, described industrial computer sends brake signal to switching value module, switching value module mainly performs the brake signal of industrial computer, make electromagnetic brake work, allow tested variator successfully change to 1 gear from N gear (neutral gear) or to change to R shelves (reverse gear) from N gear (neutral gear), other gear does not need this electromagnetic brake.
Preferably, described data acquisition module transfers data on industrial computer in the mode of fieldbus, and fieldbus uses CAN, supports CAN2.0 agreement.
Preferably, described industrial computer use CAN can the data that collect of real-time Transmission, and the gearbox controller of tested variator can be simulated, gear shifting signal is sent to tested variator ECU, so this test macro can carry out gear shift operation automatically, during gear shift, described industrial computer sends CAN gear command signal to the ECU of tested variator, completes gear shift.During brake, described industrial computer sends brake signal to switching value module, switching value module mainly performs the brake signal of industrial computer, make electromagnetic brake work, allow tested variator successfully change to 1 gear from N gear (neutral gear) or to change to R shelves (reverse gear) from N gear (neutral gear), other gear does not need this electromagnetic brake; By output terminal locking when tested variator is placed in N shelves time, complete the towing torque pilot project in running-in test.
The power of described drive motor at more than 75KW and its rotating speed can regulate within the scope of 0 ~ 3000r/min.Industrial computer controls the parameter of frequency converter by CAN, regulates the rotating speed of drive motor.Just can be regulated the rotating speed of tested variator by the rotating speed changing drive motor, thus achieve the running under the different rotating speeds of different gear.
The data on flows of the pressure at the rotating speed that data acquisition system (DAS) transmits by described controller, moment of torsion, each key position test port place, temperature, key position shows over the display, and corresponding curve can be drawn out on software according to these parameters, the fluctuation situation of response data intuitively, warning can also be carried out arrange, after the data received received exceed the early warning value of setting, there will be prompting report to the police, can also preserve all data collected simultaneously, Excel form can be formed.
Described controller also connects printer, the data collected can be printed.
This patent emphasizes the real-time display of data and storage and printing on software, and the state after the assembling of tested variator can be described, to carry out qualification determination to this product, also the convenient problem to producing in test carries out treatment and analysis.The data of this patent essential record also comprise the change of oil temperature, and will carry out the compensation in temperature time necessary, also there is requirement the time of data record in addition.Heating and heat sink must must be had on hardware.
Present invention also offers a kind of method of testing adopting the unloaded break-in test macro of above-mentioned high-power hydraulic automatic speed variator, comprise the following steps:
(1) open described test macro, prepare test;
(2) software interface selects test type and content measurement over the display, and described content measurement comprises pressure, temperature, flow, oil mass, rotating speed, moment of torsion;
(3) according to alarming value and the measure taked of the curriculum offering correlation parameter of the type selected and test, warning measure has: audible alarm, display variable color and the measure of shutdown;
(4) select control model, selectable pattern has automatically and manual two kinds of patterns, and in manual mode, the shift handle mainly carried by tested variator is shifted gears, and tested variator input speed is controlled by operating personnel; In automatic mode, be exactly mainly the change by test speed after arrival test period, can also change the gear of tested variator simultaneously;
(5) pattern can selected when selecting control model has automatically and manual two kinds of patterns, in manual mode, the shift handle mainly carried by tested variator is shifted gears, and tested variator input speed is controlled by operating personnel; In automatic mode, be exactly mainly the change by test speed after arrival test period, can also change the gear of tested variator simultaneously; The Selection experiment time is the time that input speed changes, and after arrival setting value, be that the input speed of prompting operator to tested variator changes in manual mode, be directly change according to setting value in automatic mode; Just test can be started by starter motor after above-mentioned setting completes;
(6) starter motor starts test;
(7) when tested variator starts to test, the rotating speed of motor is adjusted;
(8) image data, and can draw out corresponding curve on the software of display according to these parameters, can the fluctuation situation of response data intuitively;
(9) check all data in data acquisition system (DAS), when there being data to exceed the alarming value of setting, according to reporting to the police, the content arranged takes appropriate measures;
(10) when the test period of tested variator under certain rotating speed reaches setting value, will operator be pointed out or automatically the input speed of tested variator be changed;
(11) will be stored in database to the data collected after all tests complete, can at any time data be recalled from database when if desired printing, finally form Excel form and print.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is high-power hydraulic automatic speed variator unloaded break-in test macro composition schematic diagram;
Fig. 2 is the structural representation of test backup system;
Fig. 3 is the process flow diagram of test backup system;
Fig. 4 is the process flow diagram of main test macro.
Description of reference numerals:
Tested variator 1; Gearbox controller 2; Torque sensor 3; Speed probe 4; Torque gauge 5; Drive motor 6; Frequency converter 7; Electromagnetic brake 8; Switching value module 9; Oil pressure sensor 10; Fuel-quantity transducer 11; Oil temperature sensor 12; Note, jettison gear 13; Add, heat abstractor 14; Industrial computer 15; Data acquisition module 16; Shaft coupling 17; Transmission shaft 18; Heat interchange mouth 19; Pouring orifice 20; Oil sump 21.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Describe the unloaded break-in test macro of the high-power hydraulic automatic speed variator of one of the present invention referring to Fig. 1-4, comprise tested variator 1, gearbox controller 2, torque sensor 3, speed probe 4, torque gauge 5, drive motor 6, frequency converter 7, electromagnetic brake 8, switching value module 9, oil pressure sensor 10, fuel-quantity transducer 11, oil temperature sensor 12, note, jettison gear 13, add, heat abstractor 14, industrial computer 15, data acquisition module 16 and controller.
As shown in Figure 1, tested variator 1 is connected with gearbox controller 2, and tested variator 1 is connected with torque sensor 3 by transmission shaft 18, is connected with speed probe 4 by shaft coupling 17.Torque sensor 3 is connected with torque gauge 5, and torque sensor 3 is also connected by shaft coupling 17 drive motor 6, and drive motor 6 is connected with frequency converter 7.Speed probe 4 is connected with electromagnetic brake 8, and electromagnetic brake 8 is connected with switching value module 9.Tested variator 1 is provided with oil pressure sensor 10, fuel-quantity transducer 11 and oil temperature sensor 12, tested variator 1 with note, jettison gear 13, add, heat abstractor 14 is connected, oil pressure sensor 10, fuel-quantity transducer 11 and oil temperature sensor 12 with data acquisition module 16 be connected.Frequency converter 7, torque gauge 5, gearbox controller 2, switching value module 9, data acquisition module 16, tested variator 1, note, jettison gear 13, add, heat abstractor 14 is all connected with controller.Controller comprises industrial computer 15, control panel and power pack, and industrial computer 15 is connected with power pack with control panel, and industrial computer 15 is also connected with display.
Require in whole unloaded running-in test process of dispatching from the factory that rotating speed changes, therefore drive motor 6 adopts its rotating speed of variable-frequency motor can regulate within the scope of 0 ~ 3000r/min, just can be regulated the rotating speed of tested variator 1 by the rotating speed changing drive motor 6, thus achieve the running under the different rotating speeds of different gear.Because whole test is no load test, so the power that drive motor 6 needs only needs about 15% of its general power, therefore the power of drive motor 6 is at about 75KW.The variable-frequency motor frequency converter 7 that power matches with it is connected, and can control the rotating speed of motor.Regulate frequency converter 7 can pass through the rotating speed of adjusting rotary speed state modulator drive motor 6.Torque sensor 3 is connected with torque gauge 5 can tested variator 1 input speed and input torque, and the input torque of drive motor 6 is by formula: (T is torque value to T=9550*P/n, unit: Nm; P is power, unit: KW; N is rotating speed, unit: r/min) can calculate, so torque sensor 3 measured value should be selected at more than 300Nm.Tested variator 1 is connected with torque sensor 3 by transmission shaft 18.
Tested variator 1 carries gearbox controller 2, regulates tested variator 1 to be in different gears by this gearbox controller 2.Rotating speed simultaneously by changing drive motor 6 just can regulate the rotating speed of tested variator 1, thus achieves the running under the different rotating speeds of different gear, and the actual condition being exactly tested variator 1 is like this consistent.Software to the control of Transmission gear mainly based on the control of CAN because the shift handle gear signal on variator is CAN signal.Therefore the gearshift of variator is the shift handle using software simulation variator on industrial computer 15, and the ECU to variator sends CAN gear command signal.Electromagnetic brake 8 can brake in simulated driving process, variator can be changed to 1 gear from N gear (neutral gear) smoothly or change to R shelves (reverse gear) from N gear (neutral gear), other gear does not just need this electromagnetic brake 8, switching value module 9 mainly performs the brake signal of industrial computer 15, and electromagnetic brake 8 is worked.
The output terminal of tested variator 1 is associated with electromagnetic brake 8 by shaft coupling 17, and detent is provided with speed probe 4.This detent is controlled by switching value module 9, by output terminal locking time tested variator 1 can be placed in N shelves by it, completes the towing torque pilot project in running-in test.
The detection mouth that sensor in the instrument system of this test macro is reserved with tested variator 1 is connected, can the flow (oil mass) of the oil pressure of inside of tested variator 1, oil temperature and fluid, then the data measured are transferred in data acquisition module 16, finally transfer data on industrial computer 15 in the mode of fieldbus.Fieldbus uses CAN, supports CAN2.0 agreement.It is high that it has transmission speed, the advantages such as antijamming capability is strong, and in the application of present automotive field and extensively, message exchange between the controlled vehicle-mounted electrical unit of most of automobile uses CAN, therefore industrial computer 15 use CAN can the data that collect of real-time Transmission, and can simulate gearbox controller 2, send gear shifting signal to the ECU of tested variator 1, so this test macro can carry out gear shift operation automatically.Industrial computer 15 controls the parameter of frequency converter 7 by CAN, regulates the rotating speed of drive motor 6, and also gauge tap amount module 9, ensures the adhesive of whole electromagnetic brake 8.
Industrial computer 15 utilizes programming software, writes host computer and receive control software design.This software can show the data such as flow of rotating speed that data acquisition system (DAS) transmits, moment of torsion, the pressure at each key position test port place, temperature, key position.Corresponding curve can be drawn out on software according to these parameters, can the fluctuation situation of response data intuitively, warning can also be carried out arrange, after the data received received exceed the early warning value of setting, there will be prompting report to the police, can also preserve all data collected simultaneously, finally can form Excel form and print.And automatically can control the tested gear of variator 1 and the rotating speed of motor on this software, realize unattended function.On this test macro, there are automatic inflatable oil and oil temperature automatically to add the subsidiary functions such as heat radiation simultaneously, namely automatically carry out oil charging-discharging according to the value of setting and add heat radiation.
Test macro control desk mainly comprises, power pack, industrial computer 15, printer and control panel composition.Wherein power pack powers mainly to tested variator 1 electric-control system; The effect of industrial computer 15 is exactly as host computer, carries out control & monitor to whole system; The data collected mainly print by printer exactly; The electric power starting of control panel major control whole system and closedown, the emergent stopping of motor.
Comprise data acquisition module 16 in data acquisition system (DAS), in this module, have the sensors such as temperature sensor, speed probe 4, torque sensor 3, flow sensor and oil pressure sensor 10; Also have relevant fitting passage, sensor is connected to the corresponding position detected; And data acquisition module 16, gathered data are transferred to data acquisition module 16, finally these data are transferred on host computer and show in real time.
The function at the main interface of data acquisition has:
1, different settings can be carried out for the automatic transmission 1 of different model, " test type " can be clicked and " selection type " is arranged, finally can to test type and the date preserves data;
2, the test figure that each sensor collects can be shown in real time, thus reach the real-time monitoring to test products.And its alarm parameters can be set, that is: the actions such as data variable color prompting or shutdown can be taked when the data gathered exceed setting value time.Click " report to the police and arrange ", eject warning and interface is set.Interface is selected need the upper limit of the parameter arranged and rolls off the production line value selection exceed limit value after the action taked.As exceeded the value of this setting once the value of the sensors such as oil pressure sensor 10 or torque sensor 3, software will make the measure (report to the police, shut down) of setting.
3, before on-test, click " oil mass and Oil-temperature control setting " button, eject at " heating/refueling control interface ", thus can control oil temperature and oil mass from software.
4, telecommunication control can be carried out to testing equipment, and can maximum simulation test operating mode, the safety and reliability of warranty test.
5, data image can be carried out showing and data are stored in database, when needs calling data, final generation Excel file, handled easily, can realize the combination of figure and data in Excel file, also directly can generate diagrammatic form can see the problem that data reflect intuitively simultaneously simultaneously.
Four, the Software for Design flow process of system and design philosophy
1, backup system is tested
1.1, design in auxiliary system thought is tested:
The design of test backup system is mainly because high-power hydraulic automatic speed variator 1 needs when carrying out experimental test to refuel, and simultaneously in order to must operational mode under simulated condition as much as possible, the temperature of fluid generally needs to control at about 80 DEG C.And oil temperature is impossible reach so high temperature at physical environment temperature, and fluid is wanted to facilitate field staff to operate in the process of filling.So the carrying out of conveniently tested variator 1 test, design a test backup system very necessary.
1.3, the Software for Design process flow diagram testing backup system illustrates:
Heated tested variator 1 oil before tested variator 1 runs, in time reaching setting value, start fluid to be injected tested variator 1 inner, after arriving setting oil level, prompting can be carried out having tried out.Whether still setting value is remained at the oil level and oil temperature that carry out monitoring in the process of trying out tested variator 1 inside.All just point out after setting value when trial run a period of time oil temperature and oil level and can start to test.
As shown in Figure 2,3, add, heat abstractor 14 with note, jettison gear 13 is all be connected with industrial computer 15 by CAN, have the software of industry control to control it.Describedly to add, the pipeline of heat abstractor 14 is connected with the heat interchange mouth 19 of described tested variator 1, described oil temperature sensor 12 is located at the exit of described heat interchange mouth 19, the pipeline of described note, jettison gear 13 is connected with the oil sump 21 of described tested variator 1, and described fuel-quantity transducer 11 is located at pouring orifice 20 place of described tested variator 1; Oil temperature sensor 12 monitors the oil temperature of variator inside, and the temperature signal detected is passed to industrial computer 15 by oil temperature sensor 12, when oil temperature exceedes preset value time, industrial computer 15 transmission of signal to adding, heat abstractor 14 dispels the heat; When heating lower than when preset value; The oil mass signal detected is passed to industry control by described fuel-quantity transducer 11, when oil level reaches preset value, stop oiling, when operating modes such as occurring leakage of oil makes hydraulic oil run off and causes oil level lower than preset value, industrial computer 15 transmission of signal gives note, jettison gear 13 carries out oiling, to ensure the stable of oil level in variator operation process.
2, main test macro
2.1, the software design idea of main test macro:
The Software for Design of main test macro is mainly based on the operation that can facilitate site test personnel; complete the correlation test required for tested variator 1; the running status of whole tested variator 1 can be reflected again in real time; the action of corresponding protection can be taked by alarm testing crew timely when tested variator 1 breaks down; prevent larger loss; the state (i.e. each sensor recorded data) of tested variator 1 at that time can be recorded out simultaneously timely in the process of fault appearance, facilitate technician to analyze fault.Can also all data can be carried out being saved in database after having tested, facilitate later inspection to call and print.
2.3, the Software for Design process flow diagram of main test macro illustrates:
As shown in Figure 4, a kind of method of testing adopting the unloaded break-in test macro of above-mentioned high-power hydraulic automatic speed variator, comprises the following steps:
(1) open described test macro, prepare test;
(2) software interface selects test type and content measurement over the display, and described content measurement comprises pressure, temperature, flow, oil mass, rotating speed, moment of torsion;
(3) according to alarming value and the measure taked of the curriculum offering correlation parameter of the type selected and test, warning measure has: audible alarm, display variable color and the measure of shutdown;
(4) select control model, selectable pattern has automatically and manual two kinds of patterns, and in manual mode, the shift handle mainly carried by tested variator 1 is shifted gears, and tested variator 1 input speed is controlled by operating personnel; In automatic mode, be exactly mainly the change by test speed after arrival test period, can also change the gear of tested variator 1 simultaneously;
(5) pattern can selected when selecting control model has automatically and manual two kinds of patterns, in manual mode, the shift handle mainly carried by tested variator 1 is shifted gears, and tested variator 1 input speed is controlled by operating personnel; In automatic mode, be exactly mainly the change by test speed after arrival test period, can also change the gear of tested variator 1 simultaneously; The Selection experiment time is the time that input speed changes, and after arrival setting value, be that the input speed of prompting operator to tested variator 1 changes in manual mode, be directly change according to setting value in automatic mode; Just test can be started by starter motor after above-mentioned setting completes;
(6) starter motor starts test;
(7) when tested variator 1 starts to test, the rotating speed of motor is adjusted;
(8) image data, and can draw out corresponding curve on the software of display according to these parameters, can the fluctuation situation of response data intuitively;
(9) check all data in data acquisition system (DAS), when there being data to exceed the alarming value of setting, according to reporting to the police, the content arranged takes appropriate measures;
(10) when the test period of tested variator 1 under certain rotating speed reaches setting value, will operator be pointed out or automatically the input speed of tested variator 1 be changed;
(11) will be stored in database to the data collected after all tests complete, can at any time data be recalled from database when if desired printing, finally form Excel form and print.
The unloaded break-in test macro of the high-power hydraulic automatic speed variator that the present embodiment provides, it uses image data system the data that each sensor collects to be processed, and by the transmission of bus, the data after process are sent to host computer, then by carrying out software programming on host computer, a kind of interface of real-time monitoring is finally formed.The oil pressure at each position on tested variator can be shown on the surface in real time, the data such as temperature, flow and rotating speed at that time, moment of torsion, and these data can be realized to be stored in database, Excle form can be generated, conveniently consult the printing with file in order to follow-up.Can also control test-bed on the surface, the heating of the operating condition of tested variator and the automatic filling of fluid and oil temperature and the function of heat radiation under simulating different operating mode simultaneously.How to solve and be applicable to maximal input 500kW, maximum input torque 2650Nm, longitudinal rear-guard hydraulic automatic speed variator within the highest input speed 2700r/min dispatches from the factory unloaded running-in test, and test gathers the test of the relevant unloaded data of wheel box under different rotating speeds within certain duration of runs.
Claims (7)
1. the unloaded break-in test macro of high-power hydraulic automatic speed variator, is characterized in that, comprise tested variator, described tested variator respectively with gearbox controller, torque sensor is connected with speed probe, described torque sensor is connected with drive motor with torque gauge, described drive motor is connected with frequency converter, described speed probe is connected with electromagnetic brake, described electromagnetic brake is connected with switching value module, and described tested variator is provided with oil pressure sensor, fuel-quantity transducer and oil temperature sensor, described tested variator and note, jettison gear, add, heat abstractor is connected, described oil pressure sensor, fuel-quantity transducer and oil temperature sensor with data acquisition module be connected, described frequency converter, torque gauge, gearbox controller, switching value module, data acquisition module, tested variator, note, jettison gear, add, heat abstractor is all connected with controller, and described controller comprises industrial computer, control panel and power pack, described industrial computer is connected with power pack with control panel, and described industrial computer is also connected with display.
2. the unloaded break-in test macro of high-power hydraulic automatic speed variator according to claim 1, it is characterized in that: described in add, the pipeline of heat abstractor is connected with the heat interchange mouth of described tested variator, described oil temperature sensor is located at the exit of described heat interchange mouth, the pipeline of described note, jettison gear is connected with the oil sump of described tested variator, and described fuel-quantity transducer is located at the pouring orifice place of described tested variator; The temperature signal detected is passed to industrial computer by described oil temperature sensor, when oil temperature exceedes preset value time, industrial computer transmission of signal to adding, heat abstractor dispels the heat; When heating lower than when preset value; The oil mass signal detected is passed to industry control by described fuel-quantity transducer, when oil level reaches preset value, stop oiling, when operating modes such as occurring leakage of oil makes hydraulic oil run off and causes oil level lower than preset value, industrial computer transmission of signal gives note, jettison gear carries out oiling, to ensure the stable of oil level in variator operation process.
3. the unloaded break-in test macro of high-power hydraulic automatic speed variator according to claim 1, it is characterized in that, described data acquisition module transfers data on industrial computer in the mode of fieldbus, and fieldbus uses CAN, supports CAN2.0 agreement.
4. the unloaded break-in test macro of high-power hydraulic automatic speed variator according to claim 1, it is characterized in that, described industrial computer use CAN can the data that collect of real-time Transmission, and the gearbox controller 2 of tested variator can be simulated, this test macro gear shifting signal sent to tested variator ECU, so can carry out gear shift operation, during gear shift automatically, described industrial computer sends CAN gear command signal to the ECU of tested variator, completes gear shift; During brake, described industrial computer sends brake signal to switching value module, switching value module mainly performs the brake signal of industrial computer, make electromagnetic brake work, allow tested variator successfully change to 1 gear from N gear (neutral gear) or to change to R shelves (reverse gear) from N gear (neutral gear), other gear does not need this electromagnetic brake; By output terminal locking when tested variator is placed in N shelves time, complete the towing torque pilot project in running-in test.
5. the unloaded break-in test macro of high-power hydraulic automatic speed variator according to claim 1, it is characterized in that, the rotating speed that data acquisition system (DAS) transmits by described controller, moment of torsion, the pressure at each key position test port place, temperature, the data on flows of key position shows over the display, and corresponding curve can be drawn out on software according to these parameters, the fluctuation situation of response data intuitively, warning can also be carried out arrange, after the data received received exceed the early warning value of setting, there will be prompting report to the police, can also preserve all data collected simultaneously, Excel form can be formed.
6. the unloaded break-in test macro of high-power hydraulic automatic speed variator according to claim 1, it is characterized in that, described controller also connects printer, the data collected is printed.
7. present invention also offers a kind of method of testing adopting the unloaded break-in test macro of the high-power hydraulic automatic speed variator described in any one of claim 1-6, comprise the following steps:
(1) open described test macro, prepare test;
(2) software interface selects test type and content measurement over the display, and described content measurement comprises pressure, temperature, flow, oil mass, rotating speed, moment of torsion;
(3) according to alarming value and the measure taked of the curriculum offering correlation parameter of the type selected and test, warning measure has: audible alarm, display variable color and the measure of shutdown;
(4) select control model, selectable pattern has automatically and manual two kinds of patterns, and in manual mode, the shift handle mainly carried by tested variator is shifted gears, and tested variator input speed is controlled by operating personnel; In automatic mode, be exactly mainly the change by test speed after arrival test period, can also change the gear of tested variator simultaneously;
(5) pattern can selected when selecting control model has automatically and manual two kinds of patterns, in manual mode, the shift handle mainly carried by tested variator is shifted gears, and tested variator input speed is controlled by operating personnel; In automatic mode, be exactly mainly the change by test speed after arrival test period, can also change the gear of tested variator simultaneously; The Selection experiment time is the time that input speed changes, and after arrival setting value, be that the input speed of prompting operator to tested variator changes in manual mode, be directly change according to setting value in automatic mode; Just test can be started by starter motor after above-mentioned setting completes;
(6) starter motor starts test;
(7) when tested variator starts to test, the rotating speed of motor is adjusted;
(8) image data, and can draw out corresponding curve on the software of display according to these parameters, can the fluctuation situation of response data intuitively;
(9) check all data in data acquisition system (DAS), when there being data to exceed the alarming value of setting, according to reporting to the police, the content arranged takes appropriate measures;
(10) when the test period of tested variator under certain rotating speed reaches setting value, will operator be pointed out or automatically the input speed of tested variator be changed;
(11) will be stored in database to the data collected after all tests complete, can at any time data be recalled from database when if desired printing, finally form Excel form and print.
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| CN201410251918.3A CN104697785A (en) | 2014-06-09 | 2014-06-09 | System and method for testing no-load running-in of high-power hydraulic automatic gearbox |
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