CN117168806A - Whole agricultural machinery testing platform and testing method - Google Patents
Whole agricultural machinery testing platform and testing method Download PDFInfo
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- CN117168806A CN117168806A CN202311130297.9A CN202311130297A CN117168806A CN 117168806 A CN117168806 A CN 117168806A CN 202311130297 A CN202311130297 A CN 202311130297A CN 117168806 A CN117168806 A CN 117168806A
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- 238000012360 testing method Methods 0.000 title claims abstract description 242
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- 239000003517 fume Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000004886 process control Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
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- 238000004891 communication Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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Abstract
The invention discloses a whole agricultural machinery testing platform and a testing method, which relate to the field of agricultural machinery testing and comprise the following steps: the testing room is internally provided with a chassis dynamometer, a PTO loading test bed and a plurality of movable loading test beds, wherein the chassis dynamometer is used for testing a walking system of an agricultural implement placed on the chassis dynamometer; the PTO loading test bed is used for being connected with a PTO transmission system of the agricultural implement to test the PTO transmission system of the agricultural implement, and each movable loading test bed is respectively used for being connected with a transmission system of each accessory component of the agricultural implement to test the transmission system; a power distribution cabinet is arranged in the power distribution chamber and is electrically connected with the chassis dynamometer, the PTO loading test bed and each movable loading test bed; the comprehensive control platform is arranged in the control room and is electrically connected with the power distribution cabinet, and the comprehensive control platform is in signal connection with the chassis dynamometer, the PTO loading test bed and the movable loading test beds, so that the comprehensiveness and the accuracy of agricultural machinery testing are improved.
Description
Technical Field
The invention belongs to the technical field of agricultural implement testing, and particularly relates to an agricultural implement whole-vehicle testing platform and a testing method.
Background
At present, agricultural machinery, especially a harvester, has high self failure rate in the use process, the MTBF (mean time between failures) of imported products is usually about 150 hours, and the domestic MTBF is about 50 hours. The traditional test is a field test in the field, but is limited by seasons, weather and field environments, and the field test is low in efficiency and poor in repeatability. However, in a laboratory, a chassis dynamometer, a PTO (power take-off system) and other test boards are generally used, and only for testing the output capability of a harvester travelling mechanism and a main shaft, all harvester output units cannot be covered.
Disclosure of Invention
The invention aims to provide a whole agricultural machinery testing platform so as to solve the problems and improve the comprehensiveness and accuracy of agricultural machinery testing.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a whole agricultural machinery testing platform, which comprises: the testing room is internally provided with a chassis dynamometer, a PTO loading test bed and a plurality of movable loading test beds, and the chassis dynamometer is used for testing a running system of an agricultural implement placed on the chassis dynamometer; the PTO loading test bed is arranged on the outer side of the front end or the rear end of the chassis dynamometer, is connected with an output port of a PTO transmission system of the agricultural implement to test the PTO transmission system of the agricultural implement, is respectively arranged on two sides of the chassis dynamometer, is respectively connected with an output port of a transmission system of each accessory component of the agricultural implement to test the chassis dynamometer, and can move and adjust the position of each movable loading test bed (3); a power distribution cabinet is arranged in the power distribution room and is electrically connected with the chassis dynamometer, the PTO loading test bed and each movable loading test bed; the comprehensive control platform is arranged in the control room and is electrically connected with the power distribution cabinet, and the comprehensive control platform is in signal connection with the chassis dynamometer, the PTO loading test bed and a plurality of movable loading test beds.
Preferably, the movable loading test bed is connected with an output port of a transmission system of an accessory component of the agricultural implement through a telescopic universal transmission shaft.
Preferably, the integrated control platform is provided with a load control PC and a load controller, the load control PC is electrically connected with the load controller, each mobile load test stand is internally provided with a load unit, each load unit is electrically connected with the load controller, the load unit comprises a load driver and a load sensor, the load controller is used for respectively sending process control data to each load driver, and the load controller can receive data collected by each load sensor and calculate the data collected by the load sensor.
Preferably, an environmental temperature simulation system is further arranged in the test room, the environmental temperature simulation system is in signal connection with the comprehensive control platform, the environmental temperature simulation system is electrically connected with the power distribution cabinet, the environmental temperature simulation system can simulate the environmental temperature in the test room, the simulated environmental temperature is controlled within the range of-25 ℃ to 60 ℃, a communicated ventilation cavity is arranged in an outer wall and a top plate of the test room, a fresh air port and an air outlet which are communicated with the ventilation cavity are arranged at the top of the top plate, and the environmental temperature simulation system is used for heating or refrigerating air entering the ventilation cavity from the fresh air port so as to simulate the environmental temperature in the test room.
Preferably, a smoke exhaust system is further arranged in the test room, the smoke exhaust system is in signal connection with the comprehensive control platform, the smoke exhaust system is electrically connected with the power distribution cabinet, an air inlet of the smoke exhaust system is arranged at a position close to an exhaust emission port of the agricultural implement, and the smoke exhaust system is used for exhausting exhaust sucked by the air inlet to the test room.
Preferably, the PTO loading test stand has a liftable structure.
Preferably, a first anti-collision column and a second anti-collision column are further arranged in the test room, the first anti-collision column and the second anti-collision column are respectively arranged on the outer sides of two ends of the chassis dynamometer, and the first anti-collision column and the second anti-collision column are of a lifting structure.
Preferably, each of the mobile loading test benches includes a plurality of first mobile loading test benches, a plurality of second mobile loading test benches, and a plurality of third mobile loading test benches, wherein the power of the first mobile loading test benches is smaller than that of the second mobile loading test benches, and the power of the second mobile loading test benches is smaller than that of the third mobile loading test benches.
Preferably, the system further comprises an HIL system, and the HIL system is connected with the integrated control platform.
The invention also provides a method for using the whole agricultural machinery testing platform, which comprises the following steps:
driving the agricultural implement to the chassis dynamometer, and connecting the PTO loading test bed with an output port of the PTO transmission system; the position of each movable loading test bed is movably regulated, and each movable loading test bed is respectively connected with an output port of a transmission system of each accessory component of the agricultural implement; and operating the comprehensive control platform to perform whole vehicle test on the agricultural machinery.
Compared with the prior art, the invention has the following advantages and technical effects:
the invention provides a whole agricultural machinery testing platform and a testing method, wherein a chassis dynamometer is arranged in a testing room to test a running system of an agricultural machinery, a PTO loading test bed is arranged to load a PTO transmission system to simulate the working condition of the PTO transmission system when the agricultural machinery works in the field, so that the PTO transmission system can be tested, each auxiliary component of the agricultural machinery is loaded by moving and reasonably placing each movable loading test bed to simulate the working condition of each auxiliary component of the agricultural machinery in the field, the testing of each auxiliary component transmission system of the agricultural machinery can be completed, all power output parts of the agricultural machinery can be tested, the testing comprehensiveness is effectively improved, in addition, the chassis dynamometer, the PTO loading test bed and each movable loading test bed are connected with a comprehensive control platform through signals, the comprehensive control platform can accurately control the chassis dynamometer, the PTO loading test bed and each movable loading test bed, and the comprehensive control platform can accept feedback of the PTO dynamometer, the loading test bed and each movable loading test bed to the test, so that the testing accuracy is effectively improved.
Drawings
For a clearer description of an embodiment of the invention or of the solutions of the prior art, the drawings that are needed in the embodiment will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:
FIG. 1 is a schematic structural diagram of a whole agricultural machinery testing platform provided by the invention;
FIG. 2 is a top view of the whole agricultural machinery testing platform provided by the invention;
FIG. 3 is a front cross-sectional view of the whole agricultural machinery testing platform provided by the invention;
FIG. 4 is a system diagram of the whole agricultural machinery testing platform provided by the invention for realizing loading and feedback;
1, a chassis dynamometer; 2. PTO loading test bed; 3. a movable loading test bed; 4. a distribution room; 5. a control room; 6. an ambient temperature simulation system; 7. a ventilation cavity; 8. a new wind gap; 9. an air outlet; 10. a smoke exhaust system; 11. a first anti-collision column; 12. the second anti-collision column; 13. a test room; 15. an agricultural implement; 16. a solar simulation system.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
The invention provides a whole agricultural machinery testing platform, as shown in figures 1-4, comprising: the testing room 13, the distribution room 4 and the control room 5 are internally provided with a chassis dynamometer 1, a PTO loading test stand 2 and a plurality of movable loading test stands 3, wherein the chassis dynamometer 1 is used for testing a running system of an agricultural implement 15 placed on the chassis dynamometer 1; the PTO loading test bed 2 is arranged on the outer side of the front end or the rear end of the chassis dynamometer 1, the PTO loading test bed 2 is connected with a PTO transmission system of the agricultural implement 15 to test the PTO transmission system of the agricultural implement 15, each movable loading test bed 3 is respectively arranged on two sides of the chassis dynamometer 1, and each movable loading test bed 3 is respectively connected with a transmission system of each accessory component of the agricultural implement 15 to test the same; a power distribution cabinet is arranged in the power distribution room 4 and is electrically connected with the chassis dynamometer 1, the PTO loading test bed 2 and each movable loading test bed 3; the comprehensive control platform is arranged in the control room 5 and is electrically connected with the power distribution cabinet, the comprehensive control platform is in signal connection with the chassis dynamometer 1, the PTO loading test bed 2 and the plurality of movable loading test beds 3, the chassis dynamometer 1 is arranged in the test room 13 to test a running system of the farm machinery 15, the PTO loading test bed 2 is arranged to test a PTO transmission system, the movable loading test beds 3 are moved and reasonably placed to test the transmission system of each accessory component of the farm machinery 15, all power output parts of the farm machinery can be tested, the test comprehensiveness is effectively improved, in addition, the chassis dynamometer 1, the PTO loading test bed 3 and the comprehensive control platform are in signal connection, the chassis dynamometer 1, the PTO loading test bed 3 and the movable loading test beds 3 are precisely controlled through the comprehensive control platform, and the comprehensive control platform can accept feedback of the chassis dynamometer 1, the PTO loading test and the movable loading test beds 3 to the test, and the test accuracy of the test is effectively improved.
In a preferred scheme of the embodiment, the PTO loading test stand 2 is connected with the PTO transmission system through a telescopic universal transmission shaft, the mobile loading test stand 3 is connected with the transmission system of the accessory component of the agricultural implement 15 through a telescopic universal transmission shaft, the PTO loading test stand 2 is connected with the PTO transmission system of the agricultural implement 15 through a telescopic universal transmission shaft, and the agricultural implement 15 at different positions can be adapted through the telescopic universal transmission shaft and the angular swing; the telescopic universal transmission shaft of the movable loading test bed 3 is set in a staggered manner in length and is subjected to angle adjustment, so that the occupied space of each movable loading test can be reduced, the number of the movable loading test beds 3 can be increased, the overall monitoring performance of the whole agricultural machine 15 is improved, and the telescopic universal transmission shaft can also be suitable for agricultural machines 15 of different types.
Specifically, items that the running system of the agricultural implement 15 can test using the chassis dynamometer 1 include: dynamic test, acceleration and deceleration performance test, sliding performance test, braking function test, precursor combination/separation test, front/rear left/right speed difference test, traction force, traction power test + traction efficiency test, gear shifting test, reverse running-in test, empty load test, speedometer and odometer test, gear shifting and reverse test, slip ratio test, harvester and harvester drive train efficiency measurement, drive train heat balance test, running-in test, load test, running train reliability test, running train heat balance test and the like.
Specifically, the power transmission system of each accessory part of the farm tool 15 includes an engine cooling system heat balance test by using the items that can be tested by each movable loading test stand 3; the rotation speed, torque, power and efficiency of a whole vehicle working device transmission system (comprising and not limited to a single longitudinal axial flow roller, a double longitudinal roller, an engine, a middle shaft, an auger, a reel, a front cutter, a bridge, a cleaning device, an elevator, a re-threshing device, a grain unloading device, an accelerating roller, a rear chopper, a front roller, a rear roller and the like) are measured; and a transmission system performance and durability test of the whole vehicle working device.
Any combination test can be self-defined and completed on the whole set of test platform, and the transmission load performance, function and durability test of all assembly components of the agricultural machine can be independently completed.
In a preferred scheme of the embodiment, the integrated control platform is provided with a loading control PC, a Dyno controller and a loading controller, the Dyno controller is electrically connected with the loading controller and can perform data exchange, the loading control PC is electrically connected with the loading controller, loading units are arranged in each movable loading test bench (3), each loading unit is electrically connected with the loading controller, the loading control PC is mainly used for controlling curve editing, parameter setting and configuration, the loading units comprise loading drivers and loading sensors, the loading controller is used for respectively sending process control data to each loading driver, the loading controller can receive data collected by each loading sensor and can calculate the data collected by the loading sensor, each loading unit is provided with independent collection and control, and a speed sensor and a torque sensor are used as feedback, so that a set of negative feedback system is formed. Each loading unit is provided with an independent PID in the loading controller, and is controlled in real time according to the loading working condition curve. The torque acquisition unit selects a torque flange, so that the acquisition precision is ensured, and the motor is provided with an encoder, so that the response and the precision of the loading control are ensured.
In a preferred version of this embodiment, both the chassis dynamometer 1 and the PTO load bench 2 are also provided with a load cell that is point-connected to a load controller.
In a preferred scheme of the embodiment, an environmental temperature simulation system 6 is further arranged in the test room 13, the environmental temperature simulation system 6 is in signal connection with the comprehensive control platform, the environmental temperature simulation system 6 is electrically connected with the power distribution cabinet, the environmental temperature simulation system 6 can simulate the environmental temperature of the test room 13, the simulated environmental temperature is controlled within the range of-25 ℃ to 60 ℃, and the temperature of the test room 13 can be adjusted to be the same as the temperature of the farm machinery 15 when the farm machinery works normally in a field through the environmental temperature simulation system 6, so that the test environment is ensured to be the same as the working environment of the field, and the test accuracy can be improved.
In a preferred scheme of this embodiment, be provided with the ventilation cavity 7 of intercommunication in the outer wall and the roof of test room 13, the top of roof is provided with fresh air inlet 8 and the air outlet 9 of ventilation cavity 7 intercommunication, and ambient temperature analog system 6 is used for heating or refrigeration to the air that gets into ventilation cavity 7 from fresh air inlet 8 in order to carry out ambient temperature simulation to test room 13, simple structure through the air inlet temperature of fresh air inlet 8 of control ventilation cavity 7 to the temperature of test room 13 is adjusted.
In a preferred embodiment of the present embodiment, a sunlight simulation system is further disposed in the test room, and the sunlight simulation system is in signal connection with the integrated control platform, and is used for simulating the irradiation condition of sunlight on the agricultural implement 15.
In a preferred scheme of this embodiment, still be provided with the system 10 that discharges fume in the test room 13, the system 10 that discharges fume is connected with integrated control platform signal, and the system 10 that discharges fume is connected with the switch board electricity, and the air inlet of system 10 that discharges fume sets up in the position that is close to the tail gas discharge port of agricultural implement 15, and system 10 that discharges fume is used for discharging the exhaust gas of air inlet suction out the test room 13, simple structure can in time discharge the tail gas of agricultural implement 15 emission, avoids causing the tail gas pollution in the test room 13, influences the health of tester.
In a preferred embodiment of the present embodiment, the PTO loading test stand 2 is configured to be capable of being lifted so as to facilitate the agricultural implement 15 passing over it, and is convenient to operate, and the PTO loading test stand 2 is capable of being lifted so as to facilitate the agricultural implement 15 to smoothly enter or exit the chassis dynamometer 1.
In a preferred scheme of this embodiment, still be provided with first crashproof post 11 and second crashproof post 12 in the test room 13, first crashproof post 11 and second crashproof post 12 set up respectively in the outside at chassis dynamometer 1 both ends, and first crashproof post 11 and second crashproof post 12 are the structure that can go up and down, simple structure avoids because of the tester mishandling, and agricultural implement 15 drives out from chassis dynamometer 1 and causes the damage to test room 13.
In a preferred scheme of this embodiment, each mobile loading test stand 3 includes a plurality of first mobile loading test stands, a plurality of second mobile loading test stands and a plurality of third mobile loading test stands, and the power of first mobile loading test stand is less than second mobile loading test stand, and the power of second mobile loading test stand is less than third mobile loading test stand, through setting up the farm implement 15 accessory component that the mobile loading test stand of different powers corresponds different output loads, has guaranteed the suitability to farm implement 15 transmission system output load test.
In a preferred scheme of this embodiment, the whole agricultural machinery test platform still includes the HIL system, and the HIL system is connected with integrated control platform, promotes the richness of test scene, improves test efficiency.
The second embodiment of the invention also provides a method for using the whole agricultural machinery testing platform according to the first embodiment, which comprises the following steps:
mounting preparation: the agricultural machine 15 is driven to the chassis dynamometer 1, and the PTO loading test bed 2 is connected with an output port of a PTO transmission system; the position of each movable loading test bed is adjusted, a telescopic universal transmission shaft of each movable loading test bed is connected with each accessory part of the farm tool 15, and a signal acquisition cable and a control cable connected with the comprehensive control bed are checked;
test preparation: the test preparation of the test table is recorded in a moving way, a test load spectrum is selected on the assistance of a driver, a test loader is selected, and the test parameters of a system of the loading test table are set; the test bed is normal in communication and has no alarm;
and (3) starting a test: the comprehensive control platform is used for controlling the environmental temperature simulation system 6 to adjust the temperature to the test temperature, the smoke exhaust system 10 is opened, and a driver drives the agricultural implement 15 according to the driver assistance prompt; the chassis dynamometer 1, the PTO loading test bed 2 and each movable loading test bed 3 start simulation experiments according to a set load spectrum; the control curve is edited, parameters are set and configured, data are displayed and the like through a loading control PC in the comprehensive control platform, process control data are sent to a loading driving unit through a loading controller, the loading controller simultaneously controls and calculates the data collected by the loading control unit, each loading unit is provided with independent collection and control, and a speed sensor and a torque sensor are used as feedback, so that a set of negative feedback system is formed. Each loading unit is provided with an independent PID in the loading controller, and is controlled in real time according to the loading working condition curve. The torque acquisition unit selects a torque flange, so that the acquisition precision is ensured, and the motor is provided with an encoder, so that the response and the precision of the loading control are ensured.
And (5) ending the test.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (10)
1. An agricultural machinery whole car test platform, its characterized in that: comprising the following steps:
the testing room (13), a chassis dynamometer (1), a PTO loading test bed (2) and a plurality of movable loading test beds (3) are arranged in the testing room (13), and the chassis dynamometer (1) is used for testing a running system of an agricultural implement (15) placed on the chassis dynamometer (1); the PTO loading test bed (2) is arranged on the outer side of the front end or the rear end of the chassis dynamometer (1), the PTO loading test bed (2) is connected with an output port of a PTO transmission system of the agricultural implement (15) to test the PTO transmission system of the agricultural implement (15), the movable loading test beds (3) are respectively arranged on two sides of the chassis dynamometer (1), the movable loading test beds (3) are respectively connected with an output port of a transmission system of each accessory component of the agricultural implement (15) to test the same, and the movable loading test beds (3) can move and adjust positions;
the power distribution room (4) is internally provided with a power distribution cabinet, and the power distribution cabinet is electrically connected with the chassis dynamometer (1), the PTO loading test bed (2) and each movable loading test bed (3); and
the power distribution cabinet comprises a control room (5), wherein a comprehensive control platform is arranged in the control room (5), the comprehensive control platform is electrically connected with the power distribution cabinet, and the comprehensive control platform is in signal connection with the chassis dynamometer (1), the PTO loading test bed (2) and a plurality of movable loading test beds (3).
2. The agricultural vehicle test platform of claim 1, wherein: the movable loading test bed (3) is connected with an output port of a transmission system of an accessory component of the agricultural implement (15) through a telescopic universal transmission shaft.
3. The agricultural vehicle testing platform of claim 2, wherein: the comprehensive control platform is provided with a loading control PC and a loading controller, the loading control PC is electrically connected with the loading controller, loading units are arranged in the movable loading test tables (3), the loading units are electrically connected with the loading controller, each loading unit comprises a loading driver and a loading sensor, the loading controller is used for respectively sending process control data to the loading driver, and the loading controller can receive data collected by the loading sensor and calculate the data collected by the loading sensor.
4. The agricultural vehicle test platform of claim 1, wherein: the environment temperature simulation system is characterized in that an environment temperature simulation system (6) is further arranged in the test room (13), the environment temperature simulation system (6) is in signal connection with the comprehensive control platform, the environment temperature simulation system (6) is electrically connected with the power distribution cabinet, the environment temperature simulation system (6) can simulate the environment temperature of the test room (13), the simulated environment temperature is controlled within the range of-25-60 ℃, a ventilation cavity (7) which is communicated is arranged in the outer wall and the top plate of the test room (13), a fresh air port (8) and an air outlet (9) which are communicated with the ventilation cavity (7) are arranged at the top of the top plate, and the environment temperature simulation system (6) is used for heating or refrigerating air which enters the ventilation cavity (7) from the fresh air port (8).
5. The agricultural vehicle test platform of claim 1, wherein: still be provided with in test room (13) and discharge fume system (10), discharge fume system (10) with comprehensive control platform signal connection, discharge fume system (10) with the switch board electricity is connected, discharge fume system (10)'s air inlet set up in be close to the position of the tail gas discharge port of agricultural implement (15), discharge fume system (10) be used for with the inhaled tail gas discharge of air inlet is discharged test room (13).
6. The agricultural vehicle test platform of claim 1, wherein: the PTO loading test stand (2) has a lifting structure.
7. The agricultural vehicle test platform of claim 1, wherein: still be provided with first anticollision post (11) and second anticollision post (12) in test room (13), first anticollision post (11) with second anticollision post (12) set up respectively in the outside at chassis dynamometer machine (1) both ends, just first anticollision post (11) with second anticollision post (12) are the structure that can go up and down.
8. The agricultural vehicle test platform of claim 1, wherein: each mobile loading test bed (3) comprises a plurality of first mobile loading test beds, a plurality of second mobile loading test beds and a plurality of third mobile loading test beds, wherein the power of the first mobile loading test bed is smaller than that of the second mobile loading test bed, and the power of the second mobile loading test bed is smaller than that of the third mobile loading test bed.
9. The agricultural vehicle test platform of claim 1, wherein: the system also comprises an HIL system, wherein the HIL system is connected with the comprehensive control platform.
10. A method of using the whole agricultural machinery testing platform of any one of claims 1-9, characterized in that: the method comprises the following steps:
driving the agricultural machine (15) to the chassis dynamometer (1), and connecting the PTO loading test bed (2) with an output port of the PTO transmission system; the position of each movable loading test stand (3) is movably regulated, and each movable loading test stand (3) is respectively connected with an output port of a transmission system of each accessory component of the agricultural implement (15); and operating the comprehensive control platform to perform whole vehicle test on the agricultural machinery (15).
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| CN202311130297.9A CN117168806B (en) | 2023-09-04 | 2023-09-04 | Whole agricultural machinery testing platform and testing method |
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| CN117168806B (en) | 2024-04-30 |
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