CN101393076A - 55KW grade electricity loading test stand for automobile gear box low noise energy-conserving type under line detection and working method thereof - Google Patents
55KW grade electricity loading test stand for automobile gear box low noise energy-conserving type under line detection and working method thereof Download PDFInfo
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Abstract
The invention relates to a low-noise energy-saving test bed for the offline detection of 55KW-stage electric loading for an automobile gear-box and an operating method thereof. The test bed comprises a test bed main body, a motor box body, an electric transmission control system, a computer measuring-controlling system and an intensive oil supply hydraulic station, and is characterized in that a noise measuring device is arranged on the tested gear-box and a tray sliding table is arranged under the tested gear-box; and a gear shift device and a handle gear shift force operation measuring device are arranged on the right side of an operator who faces to the test bed. The test bed has the advantages of providing large torque up to 140Nm and meeting requirements on 30 to 100 percent of the factory detection of the loading of the gear-box with multi-specification variety types in the range of between 90 and 350Nm, reducing noise of a machine tool to be lower than 80dB through motor noise isolation and other noise reduction measurements, adjusting center distances and vertical dropping distances of input/output shafts to adapt to positioning and mounting of the gear-box with different variety specifications, adopting electric sealing power to feed back loading for energy conservation, and adopting an industrial control computer system and a measuring instrument to realize automatic control of a testing process.
Description
(1) technical field:
The invention belongs to a kind of automobile gearbox electricity and load pick-up unit, particularly a kind of automobile gear box low noise energy-saving off-line test 55KW grade electricity loading test platform and method of work thereof.
(2) background technology:
The energy-saving off-line test 55KW grade electricity loading test of automobile gear box low noise platform can provide the high pulling torque up to 140Nm, can satisfy nominal torque and load 30～100% needs that dispatch from the factory and detect, and the machine body noise can be reduced to below the 80dB at many specifications kind model wheel box of 90～350Nm scope.This testing table is a wheel box production off-line test imperative equipment, transmission assembly is loaded one by one detect test.This testing table detected object is a car manual transmission etc.Wheel box is driven test under loading environment, promptly detect moment of torsion, ratio of gear, noise and the gear shift ride comfort of wheel box each gear transmission under the given rotating speed of test specification and losing rank under prescribed torque, detection out of supply, thereby the transmission assembly qualification of dispatching from the factory is judged, guaranteed technical performance index and the reliability and the security of wheel box and car load.Existing automobile gearbox electricity loading pick-up unit moment of torsion is little, noise is high, automaticity is low, can not many kinds test, and can only test one to one.
(3) summary of the invention:
The objective of the invention is to design a kind of automobile gear box low noise energy-saving off-line test 55KW grade electricity loading test platform and method of work thereof, adopt electric circulating power feedback loading technology, load and road conditions condition when the car load of simulation wheel box moves; High pulling torque up to 140Nm can be provided, can satisfy nominal torque and load 30～100% needs that dispatch from the factory and detect at many specifications kind model wheel box of 90～350Nm scope; By adjusting input and output shaft centre distance and the vertical distance of falling, can adapt to the detection of dispatching from the factory of rolling off the production line of different kinds and specification wheel box and test; Have variator dynamic shifting test, load the variable speed dynamic noise detect test, constant speed variable load dynamic noise detect test, dynamically positive and negative/to test functions such as load test, the detections of handle dynamic shifting power; Be equipped with turnover conveying device automatically, can dock with the production assembly line; Be equipped with the bar code scan detector, read the model and the coding of variator fast.It loads one by one manual sedan gear-box assembly and detects test, detect moment of torsion, ratio of gear, noise and the gear shift ride comfort of wheel box each gear transmission under the given rotating speed of test specification and losing rank under prescribed torque, detection out of supply, thereby the transmission assembly qualification of dispatching from the factory is judged, thereby guaranteed technical performance index and the reliability and the security of wheel box and car load.
The technical scheme that the present invention is adopted for achieving the above object: the energy-saving off-line test 55KW grade electricity loading test of a kind of automobile gear box low noise platform, comprise testing table main body and motor case body, electric drive control system, computer measurement and control system, centralized oil supply Hydraulic Station, it is characterized in that having disposed handle berth-changing strength operational measure device and noise-measuring system in this testing table installation, the shifter of tested wheel box is connected in handle berth-changing strength operational measure device, and the test probe of noise-measuring system places the 50mm place, input axis top of tested wheel box automatically; Said testing table main body and motor case body comprise that input shaft drives loading motor, input shaft torque speed probe, clutch unit, variator is installed by rebound, the quick positioning clamping device of tested wheel box, the automatic telescopic shaft coupling arrangement of the automatically controlled air pressure of output shaft, take-off (propeller) shaft, output driving loading motor, centralized oil supply Hydraulic Station and notes are drained the oil and filtering system; The output terminal of said input shaft motor connects input shaft, and input shaft connects the input shaft torque speed probe; The input shaft torque speed probe is connected on the clutch coupling; Input shaft torque speed probe and clutch coupling are on many specifications adjusting gear; The clamp system that tested wheel box is arranged on transition connecting plate; Above tested wheel box noise-measuring system is arranged, there is the pallet slide unit below; Right side the front-operated person of testing table is equipped with gearshift and handle berth-changing strength operational measure device; At tested wheel box outgoing side output shaft hole is arranged, output shaft hole is connected with output shaft, and output shaft is connected with take-off (propeller) shaft by drive V-belt, and take-off (propeller) shaft is connected with the output shaft motor; The output shaft motor case body is furnished with beam outward.
Above-mentioned said electric drive control system comprises that inlet wire reactor, the digital inverter of vector controlled, the digital RHVC of vector controlled, brake unit, tested wheel box, input shaft drive loading motor, output shaft drives loading motor, output shaft raising speed device, switch board; Said inlet wire reactor is connected to the end of incoming cables of input RHVC, and the dc bus output terminal of input RHVC is connected respectively on output converter plant and the brake unit; The output terminal of output converter plant is connected to the output shaft motor; The output terminal of input RHVC is connected to the input shaft motor; The input shaft of tested wheel box is connected with the input shaft motor, and the output shaft of tested wheel box is connected with the output shaft motor.
Above-mentioned said computer measurement and control system comprises that technical grade control computer main frame, growth data harvester, data communication apparatus, stand show touch-screen and operating control device, PLC controller, torque axis speed measuring device, handle berth-changing strength operational measure device, shaft temperature sensor, noise-measuring system, bar code instrument, control rack, testing process Control Software, data collection and analysis software, system software; Said observing and controlling computing machine is connected with communication bus, data collector respectively, is used for Data transmission and status signal; Communication bus is connected with fuel tank temperature control instrument, input arrangements for speed regulation, output arrangements for speed regulation and PLC controller respectively, transmits measurement data and control signal; Fuel tank temperature control instrument, input arrangements for speed regulation and the output terminal of output arrangements for speed regulation all are connected transfer control signal with electrical control gear; Data collector is connected bi-directional signal with signal conversion unit; Signal conversion unit is connected with sensor and measuring instrument, protection and warning system, and received signal is carried out conversion of signals, and the signal after will changing sends to protection and warning system; The output terminal of sensor and measuring instrument connects the fuel tank temperature control instrument; The output terminal of protection and warning system connects electrical control gear.
Above-mentioned said computer measurement and control system is installed concentratedly in the control rack; The configuration of technical grade control computer main frame has been expanded stand and has been shown touch-screen and operating control device, comprises following software in the main frame: testing process Control Software, data collection and analysis software, system software; Said sensor and measuring instrument comprise: torque axis speed measuring device, handle berth-changing strength operational measure device, shaft temperature sensor, noise-measuring system, bar code instrument; The PLC controller is arranged between said communication bus and the electrical control gear, and the PLC controller is used to control automatic turnover conveying device, the testing position that the test front derailleur enters testing table automatically by production line, automatic card-loading; Automatically be withdrawn into production line after the test loop ends.
Above-mentioned said centralized oil supply hydraulic system mainly is to be made of absolute oil case and oil sump tank, both integrated one-level filtration unit, cascade filtration device, filling pump, oil well pump, absolute oil case filter pump, heating and attemperating unit, oil level control and warning device, solenoid valve and surplus valves installed.
The method of work of the energy-saving off-line test 55KW grade electricity loading test of a kind of above-mentioned automobile gear box low noise platform is characterized in that it comprises following job step:
(1) with the input shaft of the tested wheel box of input shaft motor-driven, the operating mode of employing alternating current generator and the digital Frequency Conversion and Speed Regulation Technique simulated engine of vector controlled provides moment of torsion, rotating speed and the power of regulation for variator;
(2) with the output shaft of output shaft motor-driven wheel box, adopt the digital speed regulating control technology of vector controlled that reactive torque, rotating speed and power are provided, with the load of simulation car load under integrated conditions such as different road conditions, car weight and windage;
(3) wheel box input and output axis drive motor power input and output each other, electronic and the regenerative power generation state of seamless level and smooth conversion, realize four-quadrant operation, the regenerative electric energy of process of the test by intermediate loop dc bus feedback input end motor, realizes that the electric energy sealing loads by the output terminal motor;
(4) the input torque speed probe measures wheel box input shaft torque rotating speed and power;
(5) wheel box centralized oil supply hydraulic system provides the lubricating oil of the Pass Test standard temperature after process heats for tested wheel box, test is preceding to be the lubricating oil of wheel box filling ormal weight by the absolute oil case, after the off-test lubricating oil is extracted into and has the oil sump tank that one-level is filtered, enter the absolute oil case by the filter pump pressurization through the cascade filtration device again, so move in circles;
(6) be equipped with the walkaway instrument, monitor tested variator and load noise, compare with qualified noise rating number(NRN, after variator is installed and finishes, the noise transducer probe enters the test position of the about 50mm in variator central axis top automatically, can return initial point automatically after test is finished;
(7) institute's outfit variator bar-code scanner reads the model of variator and numbering etc. for information about fast before the test, generate backup file on hard disc of computer automatically;
(8) use shifting of transmission and the former car accessory of gear selecting backguy, create real relatively shift condition, the berth-changing strength sensor has been installed in the gear shifting handle ball of variator has been detected the size of berth-changing strength automatically, automatically judge by computing machine whether this index is qualified, the personnel of test run simultaneously also can cooperate the evaluation berth-changing strength with feel;
(9) adopt the PLC controller to control the automatic butt of the turnover of the advance and retreat of the loading and unloading process of variator, automatic card-loading process, shifter, noise-measuring system, notes fuel outlet;
(10) be equipped with shaft temperature sensor, monitor the bearing temperature of each key position in real time, and be presented in real time on the computing machine touch-screen, carry out eye-catching alarm when surpassing normal value.The bearing temperature monitoring point is no less than 6 points.
Principle of work of the present invention: this testing table is by adjusting input and output shaft centre distance and the vertical distance of falling, and can adapt to the detection of dispatching from the factory of rolling off the production line of different kinds and specification wheel box and test.
The test function that this testing table has for variator dynamic shifting test, load the variable speed dynamic noise detect test, constant speed variable load dynamic noise detect test, dynamically just/reversed load test, the detection of handle dynamic shifting power, reverse gear switch detection, the detection of kilometer sensor rotating speed, ratio of gear detection etc.
For docking with producing assembly line, this testing table is equipped with turnover conveying device automatically, has into/go out two stations, the testing position that the test front derailleur enters testing table automatically by production line, automatic card-loading; Automatically be withdrawn into production line after the test loop ends.Making the product just rolled off the production line can directly enter testing apparatus tests can pack after qualified and dispatches from the factory.
The tested wheel box that enters testing table all has model separately to encode, for distinguishing the detection data of wheel box, it all was manual button input computing machine in the past, for improving the test beat, this testing table has been equipped with the bar code scan detector, reads the model of variator and coding etc. before the test fast for information about, generates backup file on hard disc of computer automatically, for every variator is set up test verification data file data, dispatch from the factory as the survey report printing and with wheel box; The data of every wheel box were stored 1 year at least, pressed information inquiry historical datas such as the model of bar code input of variator and numbering, as data and family curve analysis after sale.
Be energy savings, this testing table adopts electric circulating power feedback loading technology.Frequency conversion, rectification and inversion transformation technique and Computer Control Technology by digital control realize that advanced electricity sealing loads, can be with the regenerative electric energy of process of the test by the output terminal motor by intermediate loop feedback input end motor, or recycled or recycle by the inverter feedback grid, and the electric energy recovery is not less than 80%.Has utmost point remarkable energy saving effect; And can not pollute electrical network.
The tested wheel box input and output axis drive motor power input and output each other of testing table, the electronic and regenerative power generation state of seamless level and smooth conversion realizes four-quadrant operation, load and road conditions condition when moving with the car load of simulating wheel box.
Oil supply system adopts centralized oil supply and filters Hydraulic Station, carries out fuel feeding to reaching eight testing tables.
The present invention has following superiority: 1, the high pulling torque up to 140Nm is provided, can satisfies nominal torque and load 30～100% needs that dispatch from the factory and detect at many specifications kind model wheel box of 90～350Nm scope; 2, isolate and other noise reduction measure through motor noise, the machine body noise is lower than 80dB; 3, can adjust input and output shaft centre distance and the vertical distance of falling, with the wheel box location that is fit to the different cultivars specification be installed; 4, be energy savings, adopt electric circulating power feedback loading.Frequency conversion, rectification and the inversion transformation technique of the digital control by the advanced person and Computer Control Technology realize that the electricity sealing loads, with the regenerative electric energy of process of the test by the output terminal motor by intermediate loop feedback input end motor, or recycled or recycle by the inverter feedback grid, the electric energy recovery is not less than 80%.Has utmost point remarkable energy saving effect; And can not pollute electrical network; 5, the tested wheel box input and output axis drive motor power input and output each other of testing table, the electronic and regenerative power generation state of seamless level and smooth conversion realizes four-quadrant operation, load and road conditions condition when moving with the car load of simulating wheel box; 6, for reducing the machine body noise, the structure that adopts motor and machine tool main body to separate is installed in motor independently in the casing of making an uproar.Drive machine tool main body by transmission shaft.This is a domestic initiation; 7, adopt industrial control computer system and measure and control instrument to realize the automatic control of testing process; 8, perfect interlock protection function, for example: when losing rank appears in test process, out of supply or neutral gear and random fortuitous event such as shelves and when the driving phenomenon took place, system possessed mistake and turns round defencive function, thereby avoid the generation etc. of equipment and personal injury accident; 9, by test specimen gas/liquid conversion rapid-mounted mechanism, for making tested wheel box consistent with the mounting means on the engine, and be fixed on reliably on the stand, adopt the gas/liquid conversion equipment that bleed pressure is converted to the hydraulic pressure snap-in force, be pressed on test specimen on the stand securely; 10, quantitatively add oiling and oil draining system, for the lubricating oil behind the process two-stage filtration of wheel box filling ormal weight, after the off-test lubricating oil is drawn back oil tank before the test; 11, be equipped with automobile-used gearshift, use former car shifting of transmission/inversion mechanism accessory, create real relatively shift condition; Help the test run personnel with the hand valuation berth-changing strength; 12, possess handle dynamic shifting force checking device, be the detection of the berth-changing strength that adapts to the different model variator, the berth-changing strength sensor places in the gear shifting handle ball, and can be fit to different selectors; 13, adopt clutch assembly, air pressure drives, and the foot-switch electric control operation is created real clutch coupling and gear shift bit selecting operating conditions.
(4) description of drawings:
Accompanying drawing 1 is the overall construction drawing of the energy-saving off-line test 55KW grade electricity loading test of the related a kind of automobile gear box low noise of the present invention platform.
Accompanying drawing 2 is the electric drive control system figure of the energy-saving off-line test 55KW grade electricity loading test of the related a kind of automobile gear box low noise of the present invention platform.
Accompanying drawing 3 is the computer measurement and control system figure of the energy-saving off-line test 55KW grade electricity loading test of the related a kind of automobile gear box low noise of the present invention platform.
Wherein 1 is motor case body; 2 is the output shaft motor; 3 is the input shaft motor, and 4 is take-off (propeller) shaft, and 5 is input shaft; 6 is drive V-belt; 7 is torque speed sensor, and 8 is clutch coupling, and 9 is clamp system; 10 is tested wheel box; 11 is the pallet slide unit, and 12 is output shaft, and 13 is cushion blocking; 14 is plate welding stage body; 15 is oil sump tank, and 16 is the absolute oil case, and 17 is the computer measurement and control system rack; 18 is the electric drive system switch board; 19 is many specifications adjusting gear, and 20 is handle berth-changing strength operational measure device, and 21 is noise-measuring system; 22 is the inlet wire reactor; 23 are the input RHVC, and 24 are output converter plant (being the digital inverter of vector controlled), and 25 is brake unit; 26 is the input shaft motor; 27 is tested wheel box, and 28 is the output shaft motor, and 29 are the observing and controlling computing machine; 30 is communication bus; 31 is data collector, and 32 is signal conversion unit, and 33 is sensor and measuring instrument; 34 is the fuel tank temperature control instrument; 35 are the input arrangements for speed regulation, and 36 are the output arrangements for speed regulation, and 37 is electrical control gear; 38 are protection and warning system, and 39 is the PLC controller.
(5) embodiment:
Embodiment: the energy-saving off-line test 55KW grade electricity loading test of a kind of automobile gear box low noise platform comprises testing table main body and motor case body (see figure 1), electric drive control system (see figure 2), computer measurement and control system (see figure 3), centralized oil supply Hydraulic Station (see figure 1); It is characterized in that having disposed handle berth-changing strength operational measure device and noise-measuring system in this testing table installation, the shifter of tested wheel box is connected in handle berth-changing strength operational measure device, and the test probe of noise-measuring system places the 50mm place, input axis top of tested wheel box automatically; Said testing table main body and motor case body comprise that input shaft drives loading motor 3, input shaft torque speed probe 7, clutch unit 8, variator is installed by rebound, the quick positioning clamping device 9 of tested wheel box, the automatic telescopic shaft coupling arrangement of the automatically controlled air pressure of output shaft, take-off (propeller) shaft 4, output driving loading motor 2, centralized oil supply Hydraulic Station and notes are drained the oil and filtering system; The output terminal of said input shaft motor 3 connects input shaft 5, and input shaft 5 connects input shaft torque speed probe 7; Input shaft torque speed probe 7 is connected on the clutch coupling 8; Input shaft torque speed probe 7 and clutch coupling 8 are on many specifications adjusting gear 19; What tested wheel box was arranged on transition connecting plate steps up mechanism 9; Noise-measuring system 21 is arranged above tested wheel box, and there is pallet slide unit 11 below; Handle berth-changing strength operational measure device 20 is arranged on the pallet slide unit; At tested wheel box outgoing side output shaft hole is arranged, output shaft hole is connected 12 with output shaft, and output shaft 12 is connected with take-off (propeller) shaft 4 by drive V-belt 6, and take-off (propeller) shaft 4 is connected with output shaft motor 2; Is furnished with beam 13 outside the output shaft motor case body 1;
Said electric drive control system (see figure 2) comprises that inlet wire reactor 22, the digital inverter 24 of vector controlled, the digital RHVC 23 of vector controlled, brake unit 25, tested wheel box 27, input shaft drive loading motor 26, output shaft drives loading motor 28, output shaft raising speed device, switch board 18; Said inlet wire reactor 22 is connected to the end of incoming cables of input RHVC 23, and the dc bus output terminal of input RHVC 23 is connected respectively on output converter plant 24 and the brake unit 25; The output terminal of output converter plant 24 is connected to output shaft motor 28; The output terminal of input RHVC 23 is connected to input shaft motor 26; Tested wheel box logical 27 is crossed input shaft and is connected with input shaft motor 26, and tested wheel box is connected with output shaft motor 28 by output shaft.
Above-mentioned said computer measurement and control system (see figure 3) comprises that technical grade control computer main frame 29, growth data harvester 31, data communication apparatus 30, stand show touch-screen and operating control device, PLC controller 39, torque axis speed measuring device, handle berth-changing strength operational measure device, shaft temperature sensor, noise-measuring system, bar code instrument, control rack, testing process Control Software, data collection and analysis software, system software; Said observing and controlling computing machine 29 is connected with communication bus 30, growth data harvester 31 respectively, is used for Data transmission and status signal; Communication bus 30 is connected with fuel tank temperature control instrument 34, input arrangements for speed regulation 35 and output arrangements for speed regulation 36 respectively, transmits measurement data and control signal; Fuel tank temperature control instrument 34, input arrangements for speed regulation 35 and the output terminal of output arrangements for speed regulation 36 all are connected the unidirectional delivery control signal with electrical control gear 37; Data collector 31 is connected bi-directional signal with signal conversion unit 32; Signal conversion unit 32 is connected with sensor and measuring instrument 33, protection and warning system 38, and received signal is carried out conversion of signals, and the signal after will changing sends to protection and warning system 38; The output terminal of sensor and measuring instrument 33 connects the input end of fuel tank temperature control instrument 34; The output terminal of protection and warning system 38 connects the input end of electrical control gear.
Above-mentioned said computer measurement and control system (see figure 3) is installed concentratedly in control rack 17; The configuration of technical grade control computer main frame has been expanded stand and has been shown touch-screen and operating control device, comprises following software in the main frame: testing process Control Software, data collection and analysis software, system software; Said sensor and measuring instrument 33 comprise: torque speed sensor 7, handle berth-changing strength operational measure device 20, shaft temperature sensor, noise-measuring system 21, bar code instrument; Between said communication bus 30 and the electrical control gear 37 PLC controller 39 is arranged, PLC controller 39 is used to control automatic turnover conveying device, the testing position that the test front derailleur enters testing table automatically by production line, automatic card-loading; Automatically be withdrawn into production line after the test loop ends.
Above-mentioned said centralized oil supply hydraulic system (see figure 1) mainly is to constitute both integrated one-level filtration unit, cascade filtration device, filling pump, oil well pump, absolute oil case filter pump, heating and attemperating unit, oil level control and warning, solenoid valve, surplus valves installed by absolute oil case 16 and oil sump tank 15.
The method of work of the energy-saving off-line test 55KW grade electricity loading test of a kind of above-mentioned automobile gear box low noise platform is characterized in that it comprises following job step:
(1) with the input shaft of the tested wheel box 10 of input shaft motor 3 drivings, the operating mode of employing alternating current generator and digital frequency changing regulating speed control apparatus 23 simulated engines of vector controlled provides moment of torsion, rotating speed and the power of regulation for variator;
(2) with the output shaft 12 of output shaft motor 2 driving wheel boxes 10, adopt the digital inversion speed-governing control device 23 of vector controlled that reactive torque, rotating speed and power are provided, with the load of simulation car load under integrated conditions such as different road conditions, car weight and windage;
(3) wheel box 10 input shaft drive motor 3 and output shaft drive motor 2 power input and output each other, electronic and the regenerative power generation state of seamless level and smooth conversion, realize four-quadrant operation, the regenerative electric energy of process of the test by intermediate loop dc bus feedback input end motor, realizes that the electric energy sealing loads by the output terminal motor;
(4) the input torque speed probe is surveyed 7 and is got wheel box 10 input shaft torque rotating speed and power;
(5) wheel box centralized oil supply hydraulic system provides the lubricating oil of the Pass Test standard temperature after process heats for tested wheel box 10, test is preceding to be the lubricating oil of wheel box filling ormal weight by the absolute oil case, after the off-test lubricating oil is extracted into and has the oil sump tank that one-level is filtered, enter the absolute oil case by the filter pump pressurization through the cascade filtration device again, so move in circles;
(6) be equipped with walkaway instrument 21, monitor tested variator and load noise, compare with qualified noise rating number(NRN, after variator is installed and finishes, the noise transducer probe enters the test position of the about 50mm in variator 10 central axis top automatically, can return initial point automatically after test is finished;
(7) institute's outfit variator bar-code scanner reads the model of variator and numbering etc. for information about fast before the test, generate backup file on computing machine 29 hard disks automatically;
(8) use shifting of transmission and the former car accessory of gear selecting backguy, create real relatively shift condition, the berth-changing strength sensor has been installed in the gear shifting handle ball of variator has been detected the size of berth-changing strength automatically, automatically judge by computing machine whether this index is qualified, the personnel of test run simultaneously also can cooperate the evaluation berth-changing strength with feel;
(9) adopt PLC controller 39 to control the automatic butt of the turnover of the advance and retreat of the loading and unloading process of variator, automatic card-loading process, shifter, noise-measuring system, notes fuel outlet;
(10) be equipped with shaft temperature sensor, monitor the bearing temperature of each key position in real time, and be presented in real time on the computing machine touch-screen, carry out eye-catching alarm when surpassing normal value.The bearing temperature monitoring point is no less than 6 points.
Claims (6)
1, the energy-saving off-line test 55KW grade electricity loading test of a kind of automobile gear box low noise platform, comprise testing table main body and motor case body, electric drive control system, computer measurement and control system, centralized oil supply Hydraulic Station, it is characterized in that above tested wheel box noise-measuring system being arranged, there is the pallet slide unit below; Right side the front-operated person of testing table is equipped with gearshift and handle berth-changing strength operational measure device; Said testing table main body and motor case body comprise that input shaft drives loading motor, input shaft torque speed probe, clutch unit, variator is installed by rebound, the quick positioning clamping device of tested wheel box, the automatic telescopic shaft coupling arrangement of the automatically controlled air pressure of output shaft, take-off (propeller) shaft, output driving loading motor, centralized oil supply Hydraulic Station and notes are drained the oil and filtering system; The output terminal of said input shaft motor connects input shaft, and input shaft connects the input shaft torque speed probe; The input shaft torque speed probe is connected on the clutch coupling; Input shaft torque speed probe and clutch coupling are on many specifications adjusting gear; The clamp system that tested wheel box is arranged on transition connecting plate; Above tested wheel box noise-measuring system is arranged, there is the pallet slide unit below; Right side the front-operated person of testing table is equipped with gearshift and handle berth-changing strength operational measure device; At tested wheel box outgoing side output shaft hole is arranged, output shaft hole is connected with output shaft, and output shaft is connected with take-off (propeller) shaft by drive V-belt, and take-off (propeller) shaft is connected with the output shaft motor; The output shaft motor case body is furnished with beam outward.
2,, it is characterized in that said electric drive control system comprises that inlet wire reactor, the digital inverter of vector controlled, the digital RHVC of vector controlled, brake unit, tested wheel box, input shaft drive loading motor, output shaft drives loading motor, output shaft raising speed device, switch board according to the energy-saving off-line test 55KW grade electricity loading test of the said a kind of automobile gear box low noise of claim 1 platform; Said inlet wire reactor is connected to the end of incoming cables of input RHVC, and the dc bus output terminal of input RHVC is connected respectively on output converter plant and the brake unit; The output terminal of output converter plant is connected to the output shaft motor; The output terminal of input RHVC is connected to the input shaft motor; The input shaft of tested wheel box is connected with the input shaft motor, and the output shaft of tested wheel box is connected with the output shaft motor.
3,, it is characterized in that said computer measurement and control system comprises that technical grade control computer main frame, growth data harvester, data communication apparatus, stand show touch-screen and operating control device, PLC controller, torque axis speed measuring device, handle berth-changing strength operational measure device, shaft temperature sensor, noise-measuring system, bar code instrument, control rack, testing process Control Software, data collection and analysis software, system software according to the energy-saving off-line test 55KW grade electricity loading test of the said a kind of automobile gear box low noise of claim 1 platform; Said observing and controlling computing machine is connected with communication bus, data collector respectively, is used for Data transmission and status signal; Communication bus is connected with fuel tank temperature control instrument, input arrangements for speed regulation, output arrangements for speed regulation and PLC controller respectively, transmits measurement data and control signal; Fuel tank temperature control instrument, input arrangements for speed regulation and the output terminal of output arrangements for speed regulation all are connected transfer control signal with electrical control gear; Data collector is connected bi-directional signal with signal conversion unit; Signal conversion unit is connected with sensor and measuring instrument, protection and warning system, and received signal is carried out conversion of signals, and the signal after will changing sends to protection and warning system; The output terminal of sensor and measuring instrument connects the fuel tank temperature control instrument; The output terminal of protection and warning system connects electrical control gear.
4, according to the energy-saving off-line test 55KW grade electricity loading test of the said a kind of automobile gear box low noise of claim 1 platform, it is characterized in that said computer measurement and control system install concentratedly in control rack; The configuration of technical grade control computer main frame has been expanded stand and has been shown touch-screen and operating control device, comprises following software in the main frame: testing process Control Software, data collection and analysis software, system software; Said sensor and measuring instrument comprise: torque axis speed measuring device, handle berth-changing strength operational measure device, shaft temperature sensor, noise-measuring system, bar code instrument; The PLC controller is arranged between said communication bus and the electrical control gear, and the PLC controller is used to control automatic turnover conveying device, the testing position that the test front derailleur enters testing table automatically by production line, automatic card-loading; Automatically be withdrawn into production line after the test loop ends.
5, according to the energy-saving off-line test 55KW grade electricity loading test of the said a kind of automobile gear box low noise of claim 1 platform, it is characterized in that said centralized oil supply hydraulic system mainly is to be made of absolute oil case and oil sump tank, both integrated one-level filtration unit, cascade filtration device, filling pump, oil well pump, absolute oil case filter pump, heating and attemperating unit, oil level control and warning device, solenoid valve and surplus valves installed.
6, the method for work of the energy-saving off-line test 55KW grade electricity loading test of a kind of above-mentioned automobile gear box low noise platform is characterized in that it comprises following job step:
(1) with the input shaft of the tested wheel box of input shaft motor-driven, the operating mode of employing alternating current generator and the digital Frequency Conversion and Speed Regulation Technique simulated engine of vector controlled provides moment of torsion, rotating speed and the power of regulation for variator;
(2) with the output shaft of output shaft motor-driven wheel box, adopt the digital speed regulating control technology of vector controlled that reactive torque, rotating speed and power are provided, with the load of simulation car load under integrated conditions such as different road conditions, car weight and windage;
(3) wheel box input and output axis drive motor power input and output each other, electronic and the regenerative power generation state of seamless level and smooth conversion, realize four-quadrant operation, the regenerative electric energy of process of the test by intermediate loop dc bus feedback input end motor, realizes that the electric energy sealing loads by the output terminal motor;
(4) the input torque speed probe measures wheel box input shaft torque rotating speed and power;
(5) wheel box centralized oil supply hydraulic system provides the lubricating oil of the Pass Test standard temperature after process heats for tested wheel box, test is preceding to be the lubricating oil of wheel box filling ormal weight by the absolute oil case, after the off-test lubricating oil is extracted into and has the oil sump tank that one-level is filtered, enter the absolute oil case by the filter pump pressurization through the cascade filtration device again, so move in circles;
(6) be equipped with the walkaway instrument, monitor tested variator and load noise, compare with qualified noise rating number(NRN, after variator is installed and finishes, the noise transducer probe enters the test position of the about 50mm in variator central axis top automatically, can return initial point automatically after test is finished;
(7) institute's outfit variator bar-code scanner reads the model of variator and numbering etc. for information about fast before the test, generate backup file on hard disc of computer automatically;
(8) use shifting of transmission and the former car accessory of gear selecting backguy, create real relatively shift condition, the berth-changing strength sensor has been installed in the gear shifting handle ball of variator has been detected the size of berth-changing strength automatically, automatically judge by computing machine whether this index is qualified, the personnel of test run simultaneously also can cooperate the evaluation berth-changing strength with feel;
(9) adopt the PLC controller to control the automatic butt of the turnover of the advance and retreat of the loading and unloading process of variator, automatic card-loading process, shifter, noise-measuring system, notes fuel outlet;
(10) be equipped with shaft temperature sensor, monitor the bearing temperature of each key position in real time, and be presented in real time on the computing machine touch-screen, carry out eye-catching alarm when surpassing normal value.The bearing temperature monitoring point is no less than 6 points.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100597258A CN101393076A (en) | 2007-09-19 | 2007-09-19 | 55KW grade electricity loading test stand for automobile gear box low noise energy-conserving type under line detection and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100597258A CN101393076A (en) | 2007-09-19 | 2007-09-19 | 55KW grade electricity loading test stand for automobile gear box low noise energy-conserving type under line detection and working method thereof |
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