CN102331345B - Analog loading test device of walking chassis speed changing box of combine harvester - Google Patents
Analog loading test device of walking chassis speed changing box of combine harvester Download PDFInfo
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- CN102331345B CN102331345B CN201110169417.7A CN201110169417A CN102331345B CN 102331345 B CN102331345 B CN 102331345B CN 201110169417 A CN201110169417 A CN 201110169417A CN 102331345 B CN102331345 B CN 102331345B
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Abstract
The invention discloses an analog loading test device of a walking chassis speed changing box of a combine harvester, comprising an installation base, a drive part, a speed changing box fixing device, a loading part, a vibration measuring system, a noise measuring system, a box body temperature measuring system, a lubricating oil temperature measuring system and a central control cabinet. According to the invention, a speed governing motor is used as power, two magnetic powder brakes independently apply working loads, the whole system is provided with three sets of torsion rotating speed sensors, one set of vibration detection system, one set of noise detection system and one set of box body temperature and oil temperature system, and all detection signals are transmitted to an industrial control machine of the central control cabinet and displayed in real time and recorded and stored; control signals of the magnetic powder brakes are provided by an analog output card and are programmed in control software; and two paths of output voltages are respectively controlled by using a function, thus simulation of a complex working condition can be realized, and a fatigue test can be carried out.
Description
Technical field
The present invention relates to a kind of analog loading test device of walking chassis speed changing box of combine harvester, be mainly used in walking chassis speed changing box of combine harvester to carry out the measurement of lab simulation load test and wheel box vibration, noise, bearing temperature, lubricating oil temperature.
Background technology
Walking chassis speed changing box of combine harvester is important process parts of united reaper, is mainly used in will engine distributing to running wheel after the dynamic retarding of output, thereby realizes the actions such as harvester advances, retreats, turning, speed change.Wheel box analog loading test device can simulate the load of united reaper wheel box under the operating modes such as field harvesting, plot transfer, road walking, to carry out serviceability and reliability testing, is the visual plant of wheel box factory testing product quality.Existing disclosed wheel box simulation loading testing table is mainly take the main-gear box of various vehicles and engineering machinery as subjects, if the patent No. Chinese patent " automobile gear box loading check test bench " that is ZL200410019970.2 is just take car hands, automatic catch wheel box as detected object, take direct current generator as load source.And united reaper condition of work is different from automobile, when gather in field, the slow resistance of speed is large, when plot was shifted ditch and crossed bank, impact frequent, when road walking, higher drag is less again for speed, and the structure of harvester gear box also has very big-difference with automobile gearbox, therefore gearbox in use for vehicle loading detection testing table can not be directly used in the detection of walking chassis speed changing box of combine harvester.The present invention just coordinates the operating modes such as speed reduction unit simulation united reaper low-speed big and the little moment of torsion of middling speed with magnetic powder brake, detect the serviceability of wheel box.
Summary of the invention
The present invention is the various load in order to go out united reaper moving gear box at lab simulation, wheel box is carried out to load test, detect the parameters such as wheel box each gear transmits under various conditions of work moment of torsion, ratio of gear and wheel box vibration, noise, temperature variation, and the part such as gear to wheel box, bearing, sealing carries out Reliability Check; Also can be used for new design wheel box to carry out serviceability and fail-test, to eliminate design defect.
Technical scheme of the present invention is: this device is made up of mounting seat, drive division, wheel box stationary installation, loading unit, Vibration-Measuring System, noise measurement system, temperature measurement system and central control cabinet.Drive division comprises speed governing drive motor, drive pulley A, belt, and drive pulley B, bearing seat A, bearing seat B, driving shaft, driving torque speed probe and shaft coupling A, shaft coupling B, drive pulley A is arranged on speed governing drive motor, be connected with the drive pulley B being arranged on driving shaft by belt, the two ends of driving shaft have bearing seat A and bearing seat B that driving shaft is fixed in mounting seat, driving shaft is equipped with shaft coupling B at the opposite side of bearing seat A, and be connected with driving torque speed probe by it, the other end of sensor is connected with wheel box by shaft coupling A.Wheel box stationary installation is fixed on wheel box in mounting seat.Loading unit has two covers, comprise separately shaft coupling F, load axle, bearing seat, shaft coupling E, load torque speed sensor, shaft coupling D, speed reduction unit, shaft coupling C and magnetic powder brake, each parts are sequentially arranged in after wheel box two output shafts, be arranged symmetrically with about wheel box, wherein shaft coupling F will load axle and be connected with output shaft of gear-box, loading axle is fixed in mounting seat by bearing seat C, the other end that loads axle is connected with loading torque speed sensor by shaft coupling E, the other end of sensor is connected with speed reduction unit by shaft coupling D, the other end of speed reduction unit is connected with magnetic powder brake by shaft coupling C.Magnetic powder brake, speed reduction unit, each torque speed sensor, each bearing seat are all fixedly connected with mounting seat by support respectively, and central control cabinet is placed in the side of system.
Described speed governing drive motor is by the driving governor control of central control cabinet, produce test required rotating speed and driving force, reach driving shaft by belt wheel and belt, more successively by after shaft coupling B, driving torque speed probe, shaft coupling A, drive the input shaft of wheel box to complete drive actions.
Described magnetic powder brake produces specific load torque under the load controller control of central control cabinet, successively through shaft coupling C, speed reduction unit, shaft coupling D, load output shaft that torque speed sensor, shaft coupling E, bearing seat, loading axle, shaft coupling F import wheel box into and complete and load action; Wherein, left and right wheels magnetic powder brake output torque, by the independent control of two tunnels analogy amount output, is programmed by computer software, by size and the form of the output of function control voltage analog, to realize simulation harvester farm work operating mode, also can carry out tired bench test; Speed reduction unit amplifies for the load torque that magnetic powder brake is produced, and loads the real-time measurement that torque speed sensor amplifies rear moment of torsion and rotating speed.
Described Vibration-Measuring System is made up of the vibration signals collecting card and the vibration signal record analysis software that are arranged in 3 axis vibration sensor, the central control cabinet of gearbox body.Described noise measurement system forms with interior local sound meter, noise signal capture card and noise signal record analysis software by being arranged on apart from wheel box 30cm.Described fuel temperature measurement system is made up of the oil temperature sensor, temperature signal collection card and the thermograph analysis software that stick in temperature sensor, the wheel box on wheel box surface.Various control signals in central control cabinet and the measuring-signal of each sensor are presented on display, and are stored on hard disk.
Beneficial effect of the present invention: analog loading test device of walking chassis speed changing box of combine harvester can reproduce the wheel box field course of work.Be characterized in, take buncher as power drive wheel box to be measured, the 1 cover torque speed sensor of connecting between motor and wheel box is to realize the monitoring of power input; Adopt 2 magnetic powder brakes to produce operating load, magnetic powder brake control signal is provided by load controller (analog output unit), and by torque speed sensor monitoring actual torque and the rotating speed of connecting with it, by programming in control software, 2 tunnel control signals can independent variation, so that the load of magnetic powder brake chassis speed changing box while simulating united reaper work.Whole system comprises 1 cover input torque speed probe, 2 cover output torque speed probes, 1 cover vibration detecting system, 1 cover walkaway system, 1 cover spin manifold temperature and oil temperature detection system, all detection signals all reach in the industrial computer of central control cabinet, show in real time and store.This testing table can detect the each running parameter of wheel box, and use function program control load, not only can simulate really farm work situation, and can carry out complete detection and analysis to wheel box serviceability and reliability, advanced, simple and practical, the convenient manufacture that possesses skills, the advantage that simulate effect is good, accuracy of detection is high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is walking chassis speed changing box of combine harvester simulation loading testing table vertical view.
Fig. 2 is testing table side view.
Fig. 3 is installation of sensors exemplary plot.
In figure: 1. speed governing drive motor, 2. drive pulley A, 3. shaft coupling A, 4. belt, 5. driving torque speed probe, 6. shaft coupling B, 7. bearing seat A, 8. drive pulley B, 9. driving shaft, 10. bearing seat B, 11. shaft coupling C, 12. magnetic powder brakes, 13. speed reduction units, 14. shaft coupling D, 15. load torque speed sensor, 16. shaft coupling E, 17. bearing seat C, 18. input shafts, 19. shaft coupling F, 20. wheel box stationary installations, 21. wheel boxes, 22. mounting seat, 23. central control cabinets, 24. sound meters, 25. oil temperature sensors, 26. vibration transducers, 27. surface temperature sensors.
Embodiment
Plant arrangement and transmission refer to Fig. 1, Fig. 2.Except speed governing drive motor 1, central control cabinet 23, all the other service parts and driving member are all fixed in mounting seat 22 by bearing, speed governing drive motor 1 is arranged on the side of whole device, be connected with driving shaft 9 by drive pulley A2, belt 4, drive pulley B8, central control cabinet is the display controller of test unit, be connected with speed governing drive motor 1, magnetic powder brake 12 and each sensor by signal wire, control signal be provided and show the data that collect.When test, first open the drive motor controller in central control cabinet, make speed governing drive motor rotation outputting power, this power arrives driving shaft 9 through drive pulley A2, belt 4, drive pulley B8, after shaft coupling B6, driving torque speed probe 5, shaft coupling A3, pass to again wheel box 21 to be measured, wherein sensor can be measured the rotating speed and the moment of torsion that drive power, reach testing requirements to assist to determine whether, if undesirable, need to adjust the output signal of drive motor controller, make drive motor raising speed or reduction of speed, until reach testing requirements.
Testing required load is provided by magnetic powder brake 12, this load reaches wheel box 13 after shaft coupling C11, rise by the reduction of speed of wheel box the effect of carrying load is amplified, more finally reach wheel box 21 to be measured by shaft coupling D14, loading torque speed sensor 15, shaft coupling E16, input shaft 18, shaft coupling F19 successively.Load controller in central control cabinet, load torque speed sensor and main control software formation control loop, controller can produce 2 road analog outputs independently to control the loading moment of torsion of magnetic powder brake, moment of torsion after sensor measurement amplifies, software judges whether the moment of torsion recording reaches testing requirements, and adjusts accordingly the output quantity of controller.It is pointed out that control software can automatically move, also can by operating personnel complete judgement and output quantity adjust.
In test unit, go back involving vibrations sensor 26, oil temperature sensor 25, surface temperature sensor 27 and noise transducer 24, these sensors are connected with the data acquisition system (DAS) in central control cabinet by wired or wireless mode, and the signal of collection is shown, is stored in each instrument or computing machine, for data analysis.The installation site of sensor is freer, only need meet testing requirements, and the position in Fig. 3 is an example, and other installation sites also should be considered as the protection domain of this patent.
Claims (1)
1. an analog loading test device of walking chassis speed changing box of combine harvester, is characterized in that: comprise mounting seat, drive division, wheel box stationary installation, loading unit, Vibration-Measuring System, noise measurement system, temperature measurement system and central control cabinet;
Described drive division comprises speed governing drive motor (1), drive pulley A(2), belt (4) and drive pulley B(8), bearing seat A(7), bearing seat B(10), driving shaft (9), driving torque speed probe (5) and shaft coupling A(3), shaft coupling B(6), described drive pulley A(2) be arranged on speed governing drive motor (1), drive pulley A(2) by belt (4) and the drive pulley B(8 being arranged on driving shaft (9)) be connected, the two ends of driving shaft (9) are provided with bearing seat A(7) and bearing seat B(10), described driving shaft (9) is by bearing seat A(7) and bearing seat B(10) be fixed in mounting seat (22), described driving shaft (9) is at bearing seat A(7) a side be provided with shaft coupling B(6), and by shaft coupling B(6) be connected with one end of driving torque speed probe (5), the other end of described driving torque speed probe (5) is by shaft coupling A(3) be connected with wheel box (21), wheel box (21) is fixed in mounting seat by wheel box stationary installation (20),
Described loading unit has two covers, respectively comprises shaft coupling F(19), load axle (18), bearing seat C(17), shaft coupling E(16), load torque speed sensor (15), shaft coupling D(14), speed reduction unit (13), shaft coupling C(11) and magnetic powder brake (12); Each parts are sequentially arranged in after wheel box two output shafts, are arranged symmetrically with about wheel box; Described shaft coupling F(19) one end that will load axle (18) is connected with output shaft of gear-box, load axle (18) by bearing seat C(17) be fixed in mounting seat (22), load the other end of axle (18) by shaft coupling E(16) be connected with the one end that loads torque speed sensor (15), load the other end of torque speed sensor (15) by shaft coupling D(14) be connected with one end of speed reduction unit (13), the other end of speed reduction unit (13) is by shaft coupling C(11) be connected with magnetic powder brake (12); Magnetic powder brake (12), speed reduction unit (13), each torque speed sensor, each bearing seat are all fixedly connected with mounting seat (22) by support respectively; The moment of torsion of speed governing drive motor (1) and rotating speed are measured and are sent to central control cabinet by torque speed sensor, be presented at and monitor on instrument;
Described central control cabinet (23) is placed in the side of system; Described speed governing drive motor (1) is by the driving governor control of central control cabinet (23), speed governing drive motor (1) provides driving force to test unit, produce load torque by two cover magnetic powder brakes, central control cabinet is all monitored and sent to load torque and rotating speed by torque speed sensor, and be presented on supervision instrument;
Described Vibration-Measuring System is made up of the vibration signals collecting card and the vibration signal record analysis software that are arranged in 3 axis vibration sensor (26), the central control cabinet (23) of gearbox body, and 3 axis vibration sensor (26) connect vibration signals collecting card;
Described noise measurement system forms with noise signal capture card and noise signal record analysis software in interior local sound meter (24), central control cabinet (23) by being arranged on apart from wheel box 30cm, and sound meter (24) connects noise signal capture card;
Described temperature measurement system by sticking on the oil temperature sensor (25) in temperature sensor (27), the wheel box on wheel box surface, temperature signal collection card and the thermograph analysis software in central control cabinet (23) forms, temperature sensor (27), oil temperature sensor (25) connect respectively temperature signal collection card; Various control signals in central control cabinet (23) and the measuring-signal of each sensor are presented on display, and are stored on hard disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110169417.7A CN102331345B (en) | 2011-06-22 | 2011-06-22 | Analog loading test device of walking chassis speed changing box of combine harvester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110169417.7A CN102331345B (en) | 2011-06-22 | 2011-06-22 | Analog loading test device of walking chassis speed changing box of combine harvester |
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| CN102331345A CN102331345A (en) | 2012-01-25 |
| CN102331345B true CN102331345B (en) | 2014-06-18 |
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| CN201110169417.7A Expired - Fee Related CN102331345B (en) | 2011-06-22 | 2011-06-22 | Analog loading test device of walking chassis speed changing box of combine harvester |
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