CN210464957U - Tractor plowing reliability simulation test system - Google Patents
Tractor plowing reliability simulation test system Download PDFInfo
- Publication number
- CN210464957U CN210464957U CN201920923822.5U CN201920923822U CN210464957U CN 210464957 U CN210464957 U CN 210464957U CN 201920923822 U CN201920923822 U CN 201920923822U CN 210464957 U CN210464957 U CN 210464957U
- Authority
- CN
- China
- Prior art keywords
- tractor
- module
- pull rod
- touch screen
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
A test system for simulating tractor plowing reliability comprises: a load ship system and a tractor comprehensive performance wireless monitoring system; the load ship system is connected to the rear part of a tractor cab through a three-point suspension, and the tractor comprehensive performance wireless monitoring system is connected to the tractor cab; the tractor plowing reliability test system overcomes the influence of weather, seasons, land parcels and machines on the tractor reliability test, and effectively shortens the test verification time; the loaded load is acquired from the actual ploughing operation, the actual ploughing operation condition is met, and the load size is adjustable, so that the test is controllable, real and effective. Meanwhile, various parameters of tractor operation are recorded, stored and displayed, various analysis processes can be carried out, and a basis is provided for shaping and improving the tractor. The system has compact structure, wide covering machine types and easy mastering of the test method, and can be applied to the reliable ploughing operation test of various simulated wheeled tractors.
Description
Technical Field
The utility model belongs to tractor test field relates to a simulation tractor reliability test system that plows.
Background
In recent years, with the increased competition of tractor product sales at home and abroad, tractor manufacturers accelerate the development of new products, and the number of the reliability test verifications of the new products of the tractors is greatly increased; aiming at the reliability test verification of a new product of the tractor, based on the requirement of the national reliability test standard of the tractor, the test method almost completely adopts the operation mode that the tractor carries out 750 hours or even 2000 hours in the field, wherein the plough operation is the most main operation mode and accounts for more than 50 percent.
Due to the influences of conditions such as seasons, weather, land parcels and machines, the period of a tractor reliability verification test usually needs more than one year, the test period is long, the single-day plowing operation area is greatly increased along with the development of a tractor to a high power direction, the available test operation area is relatively greatly reduced under the condition of the existing plowing area, the test period and the test difficulty are further prolonged, the test labor intensity is high, the test cost is high, and the research and development period of a new product is seriously influenced. Therefore, it is necessary to provide a new test system and a new test method for simulating tractor plowing reliability, which replace the conventional test system and the conventional test method, shorten the development cycle of new tractor products, reduce the development cost, and improve the product competitiveness.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a one set avoids experimental influence that receives situations such as season, weather, landmass, machines, improves experimental quality, shortens experimental period for the simulation tractor plough reliability test system of new product development pace.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a test system for simulating tractor plowing reliability comprises: a load ship system and a tractor comprehensive performance wireless monitoring system; the load ship system is connected to the rear part of a tractor cab through a three-point suspension, and the tractor comprehensive performance wireless monitoring system is connected to the tractor cab; the load ship system includes: the device comprises a central pull rod, a swing frame, a lower pull rod force measuring device, a load ship body, a pull rod, a balance weight support, a wear-resistant bottom plate, a ditch cleaner and a tail wheel mechanism; the front end of the central pull rod is connected with the tractor through a pin shaft, and the rear end of the central pull rod is connected with the front side of the upper end of the swing frame through a pin shaft; the lower end of the swing frame is connected with the front end of the load ship body through a pin shaft, and the rear side of the upper end of the swing frame is connected with the front end of a pull rod through a pin shaft; the rear end of the pull rod is connected with the middle part of the tail wheel mechanism through a pin shaft; the upper end of the tail wheel mechanism is connected with the tail part of the ship body of the load ship through a pin shaft; the counterweight is arranged on the counterweight support, and the counterweight support is connected inside the hull of the ship through bolts; two sides of the wear-resistant bottom plate are connected to the bottom of the hull of the ship through bolts; the ditch cleaning device is connected with the two sides of the tail part of the ship body of the load ship through pin shafts.
The wireless monitoring system of tractor comprehensive properties includes: the system comprises a data acquisition unit, a slip rate measuring device, a GPS speed measuring device, a central pull rod force measuring sensor, a lower pull rod force measuring sensor, an oil consumption measuring device and a notebook computer; the data acquisition unit is arranged in a tractor cab, and the slip rate measuring device is connected with a tractor driving wheel shaft and is connected to a frequency measurement counting module of the data acquisition unit through a data line; the GPS speed measuring device is adsorbed on the top of the tractor cab through a magnetic base and is connected to a GPS module of the data collector through a data line; the central pull rod force measuring sensor is arranged on a central pull rod of the load ship system and is connected to a force/torque sensor module of the data acquisition unit through a data line; the lower pull rod force measuring sensor is arranged on a lower pull rod force measuring device of the load ship system and is connected to a force/torque sensor module of the data acquisition unit through a data line; the oil consumption measuring device is connected with a tractor fuel pipeline through an oil pipe and is connected to a frequency measurement counting module of the data acquisition unit through a data line; the notebook computer is placed at the position of the annular runway and is connected with the long-distance wireless communication module of the data collector through wireless communication.
The data collector comprises: the system comprises an industrial touch screen computer, a long-distance wireless communication module, a high-capacity USB flash disk, a frequency measurement counting module, a GPS module, a voltage/current module, a force/torque sensor module, a thermocouple module, a power supply module, a thermal resistance module, system software and a case; the industrial touch screen computer is embedded in the middle of the front panel of the case; the remote wireless communication module is arranged at the left upper part of the case and is connected with the industrial touch screen computer through a data bus; the high-capacity USB flash disk is connected with an industrial touch screen computer through a USB flash disk interface data line; the frequency measurement counting module is arranged in the left measurement middle part of the case and connected with the industrial touch screen computer through a data bus, and the frequency measurement counting module is provided with 12 channels; the GPS module is arranged at the upper part of the leftmost side of the case and is connected with an industrial touch screen computer through a data bus; the voltage and current module is arranged at the lower left side of the case and connected with the industrial touch screen computer through a data bus, and the voltage and current module is provided with 8 channels; the force/torque sensor module is arranged at the lower middle part of the case and is connected with the industrial touch screen computer through a data bus, and the force/torque sensor module is provided with 8 channels; the thermocouple module is arranged at the right lower part of the case and is connected with the industrial touch screen computer through a data bus, and the thermocouple module is provided with 5 channels; the power supply module is arranged at the right lower corner of the case and is connected with the industrial touch screen computer through a wire; the thermal resistance module is arranged in the middle of the right side of the case and connected with the industrial touch screen computer through a data bus, and the thermal resistance module is provided with 10 channels; and system software is respectively written into the industrial touch screen computer and installed in the notebook computer.
The utility model adopts the above technical scheme can reach following positive effect after: the system and the method for testing the reliability of the tractor plowing simulation overcome the influence of weather, seasons, land parcels and machines on the reliability test of the tractor, effectively shorten the test verification time and quicken the pace of new product development; the loaded load can be acquired from the actual ploughing operation, the actual ploughing operation condition is met, and the load size is adjustable, so that the test is controllable, real and effective. Meanwhile, various parameters of tractor operation are recorded, stored and displayed, various analysis and processing can be carried out on the parameters, and a basis is provided for shaping and improving the tractor. The system has compact structure, wide covering machine types and easy mastering of the test method, can be applied to various test for simulating the reliable ploughing operation of the wheeled tractor, and has good economic value and social benefit.
Drawings
FIG. 1 is a schematic structural view of a test system for simulating tractor plowing reliability of the present invention;
fig. 2 is a schematic block diagram of a data acquisition unit of a tractor comprehensive performance wireless monitoring system in the tractor plowing reliability test system of the utility model.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples. As shown in fig. 1, the utility model relates to a tractor plowing reliability test system, mainly includes: a set of load boat system 1 which can adjust the plowing resistance and simulate the plowing test of the tractor, a set of tractor comprehensive performance wireless monitoring system 2 and the like. The load ship system 1 is connected to the rear part of a tractor cab through a three-point suspension, and all parts of the tractor comprehensive performance wireless monitoring system 2 are connected to corresponding positions of a tractor; the load ship system 1 includes: the device comprises a central pull rod 1.1, a swing frame 1.2, a lower pull rod force measuring device 1.3, a load ship body 1.4, a pull rod 1.5, a balance weight 1.6, a balance weight support 1.7, a wear-resistant bottom plate 1.8, a ditch cleaner 1.9 and a tail wheel mechanism 1.10; the front end of the central pull rod 1.1 is connected with a tractor through a pin shaft, and the rear end of the central pull rod 1.1 is connected with the front side of the upper end of the swing frame 1.2 through a pin shaft; the lower end of the swing frame 1.2 is connected with the front end of the load ship body 1.4 through a pin shaft, and the rear side of the upper end of the swing frame 1.2 is connected with the front end of the pull rod 1.5 through a pin shaft; the lower pull rod force measuring device 1.3 is assembled at the front end of the load ship body 1.4, and forms a traction force measuring device with a modified tractor central pull rod 1.1 provided with a force measuring device; the rear end of the pull rod 1.5 is connected with the middle part of the tail wheel mechanism 1.10 through a pin shaft; the upper end of the tail wheel mechanism 1.10 is connected with the tail part of the load ship body 1.4 through a pin shaft; the counterweight 1.6 is placed on the counterweight support 1.7, and the counterweight support 1.7 is connected inside the ship body 1.4 of the ship through bolts; two sides of the wear-resistant bottom plate 1.8 are connected to the bottom of the hull 1.4 of the ship through bolts; the ditch cleaning device 1.9 is connected with the two sides of the tail part of the load ship body 1.4 through pin shafts. And the height can be adjusted in a step mode through a plurality of equidistant connecting holes.
The wireless monitoring system 2 for the comprehensive performance of the tractor comprises: the device comprises a data acquisition unit 2.1 taking a high-shock-resistance industrial touch screen 2.1.1 as a core, a slip rate measuring device 2.2, a GPS speed measuring device 2.3, a central pull rod force measuring sensor 2.4, a lower pull rod force measuring sensor 2.5, an oil consumption measuring device 2.6 and a notebook computer 2.7. The data collector 2.1 is arranged at a proper position in a tractor cab, and the slip ratio measuring device 2.2 is connected with a tractor driving wheel shaft through a bracket and is connected to a frequency measurement counting module 2.1.4 of the data collector 2.1 through a data line; the GPS speed measuring device 2.3 is adsorbed on the top of the tractor cab through a magnetic base and is connected to a GPS module 2.1.5 of the data collector 2.1 through a data line; the central pull rod force sensor 2.4 is arranged on a tractor central pull rod 1.1 of the load ship system 1 and is connected to a force/torque sensor module 2.1.7 of the data acquisition unit 2.1 through a data line; the lower pull rod force measuring sensor 2.5 is arranged on a lower pull rod force measuring device 1.3 of the load ship system 1 and is connected to a force/torque sensor module 2.1.7 of the data acquisition unit 2.1 through a data line; the oil consumption measuring device 2.6 is arranged at a proper position of the tractor, is connected with a fuel pipeline of the tractor through an oil pipe, is connected to a frequency measurement counting module 2.1.4 of the data acquisition unit 2.1 through a data line, and is powered by a 12V power supply of the tractor; the notebook computer 2.7 is placed at a proper position of the test field annular runway and is connected with the remote wireless communication module 2.1.2 through the wireless communication and data acquisition unit 2.1.
As shown in fig. 2, the data collector 2.1 comprises: the industrial touch screen computer 2.1.1, the remote wireless communication module 2.1.2, the large-capacity U disk 2.1.3, the frequency measurement counting module 2.1.4, the GPS module 2.1.5, the voltage/current module 2.1.6, the force/torque sensor module 2.1.7, the thermocouple module 2.1.8, the power supply module 2.1.9, the thermal resistance module 2.1.10, the system software 2.1.11 and the like are powered by a tractor 12V power supply.
The data acquisition unit 2.1 has a good man-machine operation interface and can set parameters of each channel; the remote wireless communication module 2.1.2 uses ISM free frequency band, has transmission distance of about 3km (a repeater can be added to increase the transmission distance), has transmission rate of 9600bps, and is used for remote notebook computer 2.7 wireless communication; the GPS module 2.1.5 can obtain information such as vehicle speed, course, longitude, latitude, altitude and the like through a connected high-precision GPS, and is used for measuring test vehicle speed and acquiring test environment; the large-capacity U disk 2.1.3 is used for completing the local recording of the test data.
As shown in fig. 1, the tractor engine is started, the tractor is in a neutral gear, the wireless monitoring system software 2.1.11 of the notebook computer 2.7 is started, the power supply of the calibrated and set data collector 2.1 is started, the wireless monitoring system software 2.1.11 main interface of the industrial touch screen computer 2.1.1 is entered, the setting display condition of each channel is checked, the 'monitoring' button is clicked after the confirmation of no error, the data collector 2.1 starts to collect and display data, the 'start' button is clicked, the system starts to record data into the high-capacity U disk 2.1.3 according to the recording trigger condition, meanwhile, the data is transmitted to the remote notebook computer 2.7 through the wireless remote wireless communication module 2.1.2, at this time, a tester can operate and control the system through the wireless monitoring system software 2.1.11 of the remote notebook computer 2.7, and simultaneously inform the tractor driver to start the tractor for testing. The tractor runs on the annular runway according to a specified plowing operation gear by a three-point suspension traction load carrier 1, and wheels on one side are in side ditches of the runway, which are equivalent to plowing operation ditches; when the tractor starts to run in a straight line, the control lifter is in a descending state, the central pull rod 1.1 is driven by a tractor suspension system to push the swing frame 1.2 to swing backwards, meanwhile, the pull rod 1.5 is pushed to move backwards, the tail wheel mechanism 1.10 is pushed to swing backwards and upwards and is completely separated from the ground, the load ship body 1.4 descends, the wear-resistant bottom plate 1.8 is completely contacted with the ground to generate friction resistance which is equivalent to ploughing resistance, the required ploughing resistance is realized by adjusting the balance weight 1.6, the numerical value is measured by the central pull rod 1.1 and sensors on the swing frame 1.2, is transmitted to a force/torque sensor channel 2.1.7 of the data collector 2.1 through a data line and is displayed on a display screen of the data collector, and can be transmitted to a remote notebook computer 2.7 and stored in a high-capacity U disk 2.1.3; similarly, the slip rate measuring device 2.2, the GPS speed measuring device 2.3 and the oil consumption measuring device 2.6 respectively transmit the measured parameters to the data acquisition device 2.1 through data lines, display the parameters on the industrial touch screen 2.1.1, and simultaneously transmit the parameters to the remote notebook computer 2.7 and store the parameters in the high-capacity usb disk 2.1.3. Before the tractor enters a curve, the lifter is controlled to be in a rising state, the central pull rod 1.1 is driven by the tractor suspension system to pull the swing frame 1.2 to swing forwards, meanwhile, the pull rod 1.5 is driven to move forwards, the tail wheel mechanism 1.10 is driven to swing forwards and downwards and contact the ground, the load ship body 1.4 is lifted, the wear-resistant bottom plate 1.8 is separated from the ground, the friction resistance disappears, the tractor plough is equivalent to plough at the head of the ground, then turns and enters a straight-going state again, and the complete simulation of the tractor plough test is realized; when the ditches on the two sides of the annular runway 3 become shallow, the hydraulic output of the tractor controls the ditch cleaning device 1.9 to move downwards, and the redundant soil in the ditches is cleaned during straight line running. The actions are repeated in cycles to complete the tractor plough simulation reliability test; the traditional actual plowing test method is replaced by the simulated plowing reliability test method.
In summary, the test system is characterized in that the load of the simulated plowing reliability test load ship system is adjusted according to the traction force measured by the actual plowing test of the tractor to be tested or the traction force for the design requirement test, and the actual plowing test is simulated on the runway of the test field. Meanwhile, parameters such as traction force, traction power, oil consumption, slip ratio, vehicle speed and the like during simulation operation of the tractor are recorded in due time through a developed tractor comprehensive performance wireless monitoring system; when in test, a plurality of parameters are detected simultaneously to obtain first hand test data, and the technical performance of the tractor is correctly evaluated through analyzing and judging the parameters, so that reliable test basis is provided for further improving the technical performance of the tractor and matched agricultural implements thereof.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the present invention. All changes, modifications, equivalents and the like which come within the spirit of the invention are intended to be embraced therein.
Claims (3)
1. A test system for simulating tractor plowing reliability comprises: a load ship system (1) and a tractor comprehensive performance wireless monitoring system (2); the method is characterized in that: the load ship system (1) is connected to the rear part of a tractor cab through a three-point suspension, and the tractor comprehensive performance wireless monitoring system (2) is connected to the tractor cab; the loaded vessel system (1) comprises: the device comprises a central pull rod (1.1), a swing frame (1.2), a lower pull rod force measuring device (1.3), a load ship body (1.4), a pull rod (1.5), a balance weight (1.6), a balance weight support (1.7), a wear-resistant bottom plate (1.8), a ditch cleaner (1.9) and a tail wheel mechanism (1.10); the front end of the central pull rod (1.1) is connected with a tractor through a pin shaft, and the rear end of the central pull rod (1.1) is connected with the front side of the upper end of the swing frame (1.2) through a pin shaft; the lower end of the swing frame (1.2) is connected with the front end of the load ship body (1.4) through a pin shaft, and the rear side of the upper end of the swing frame (1.2) is connected with the front end of the pull rod (1.5) through a pin shaft; the rear end of the pull rod (1.5) is connected with the middle part of the tail wheel mechanism (1.10) through a pin shaft; the upper end of the tail wheel mechanism (1.10) is connected with the tail part of the load ship body (1.4) through a pin shaft; the counterweight (1.6) is arranged on the counterweight support (1.7), and the counterweight support (1.7) is connected inside the ship body (1.4) of the ship through a bolt; two sides of the wear-resistant bottom plate (1.8) are connected to the bottom of the hull (1.4) of the ship through bolts; the ditch cleaning device (1.9) is connected with the two sides of the tail part of the load ship body (1.4) through pin shafts.
2. The tractor plowing reliability test system of claim 1, wherein: the tractor comprehensive performance wireless monitoring system (2) comprises: the device comprises a data acquisition unit (2.1), a slip rate measuring device (2.2), a GPS speed measuring device (2.3), a central pull rod force measuring sensor (2.4), a lower pull rod force measuring sensor (2.5), an oil consumption measuring device (2.6) and a notebook computer (2.7); the data acquisition unit (2.1) is arranged in a tractor cab, and the slip rate measuring device (2.2) is connected with a tractor driving wheel shaft and is connected to a frequency measurement counting module (2.1.4) of the data acquisition unit (2.1) through a data line; the GPS speed measuring device (2.3) is adsorbed on the top of the tractor cab through a magnetic base and is connected to a GPS module (2.1.5) of the data collector (2.1) through a data line; the central pull rod force measuring sensor (2.4) is arranged on a central pull rod (1.1) of the load ship system (1) and is connected to a force/torque sensor module (2.1.7) of the data acquisition unit (2.1) through a data line; the lower pull rod force measuring sensor (2.5) is arranged on a lower pull rod force measuring device (1.3) of the load ship system (1) and is connected to a force/torque sensor module (2.1.7) of the data acquisition unit (2.1) through a data line; the oil consumption measuring device (2.6) is connected with a tractor fuel pipeline through an oil pipe and is connected to a frequency measurement counting module (2.1.4) of the data acquisition unit (2.1) through a data line; the notebook computer (2.7) is placed at the position of the circular runway and is connected with the long-distance wireless communication module (2.1.2) of the data collector (2.1) through wireless communication.
3. The tractor plowing reliability test system of claim 2, wherein: the data collector (2.1) comprises: the system comprises an industrial touch screen computer (2.1.1), a remote wireless communication module (2.1.2), a high-capacity USB flash disk (2.1.3), a frequency measurement counting module (2.1.4), a GPS module (2.1.5), a voltage/current module (2.1.6), a force/torque sensor module (2.1.7), a thermocouple module (2.1.8), a power supply module (2.1.9), a thermal resistance module (2.1.10), system software (2.1.11) and a case (2.1.12); the industrial touch screen computer (2.1.1) is embedded in the middle of the front panel of the case (2.1.12); the remote wireless communication module (2.1.2) is arranged at the left upper part of the case (2.1.12) and is connected with the industrial touch screen computer (2.1.1) through a data bus; the large-capacity USB flash disk (2.1.3) is connected with the industrial touch screen computer (2.1.1) through a USB flash disk interface data line; the frequency measurement counting module (2.1.4) is arranged in the middle of the left side of the case (2.1.12) and is connected with the industrial touch screen computer (2.1.1) through a data bus, and the frequency measurement counting module (2.1.4) is provided with 12 channels; the GPS module (2.1.5) is arranged at the upper part of the leftmost side of the case (2.1.12) and is connected with the industrial touch screen computer (2.1.1) through a data bus; the voltage and current module (2.1.6) is arranged at the lower part of the left side of the case (2.1.12), is connected with the industrial touch screen computer (2.1.1) through a data bus and is provided with 8 channels; the force/torque sensor module (2.1.7) is arranged at the lower middle part of the case (2.1.12) and is connected with the industrial touch screen computer (2.1.1) through a data bus, and the force/torque sensor module (2.1.7) is provided with 8 channels; the thermocouple module (2.1.8) is arranged at the right lower part of the case (2.1.12) and is connected with an industrial touch screen computer (2.1.1) through a data bus, and the thermocouple module (2.1.8) is provided with 5 channels; the power supply module (2.1.9) is arranged at the right lower corner of the case (2.1.12) and is connected with the industrial touch screen computer (2.1.1) through a wire; the thermal resistance module (2.1.10) is arranged in the middle of the right side of the case (2.1.12) and is connected with the industrial touch screen computer (2.1.1) through a data bus, and the thermal resistance module (2.1.10) is provided with 10 channels; the system software (2.1.11) is written into the industrial touch screen computer (2.1.1) and installed in the notebook computer (2.7) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923822.5U CN210464957U (en) | 2019-06-19 | 2019-06-19 | Tractor plowing reliability simulation test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923822.5U CN210464957U (en) | 2019-06-19 | 2019-06-19 | Tractor plowing reliability simulation test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210464957U true CN210464957U (en) | 2020-05-05 |
Family
ID=70441170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920923822.5U Expired - Fee Related CN210464957U (en) | 2019-06-19 | 2019-06-19 | Tractor plowing reliability simulation test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210464957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243619A (en) * | 2019-06-19 | 2019-09-17 | 第一拖拉机股份有限公司 | A kind of simulation tractor ploughing reliability test system and test method |
-
2019
- 2019-06-19 CN CN201920923822.5U patent/CN210464957U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243619A (en) * | 2019-06-19 | 2019-09-17 | 第一拖拉机股份有限公司 | A kind of simulation tractor ploughing reliability test system and test method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110887672B (en) | Whole car of intelligence car is at ring test system | |
| CN105806628B (en) | The more property test platforms of electric tractor and the method for testing using the testing stand | |
| CN102607842B (en) | Multi-operating condition extreme load testing system and method for wheel loader transmission system | |
| CN202331963U (en) | Driving test system based on GPS | |
| CN104180997B (en) | A kind of vehicle thermal balance ability indoor test device and method | |
| CN102331345B (en) | Analog loading test device of walking chassis speed changing box of combine harvester | |
| CN103308324A (en) | Intelligent comprehensive performance detection system for vehicle | |
| CN105004506A (en) | Self-elevating type offshore platform pile leg wave-current load coefficient test experimental system | |
| CN205620361U (en) | Strike damage of scanning formula bridge and detect car | |
| CN102175288A (en) | Method and special device for online measurement of river or canal flow | |
| CN210464957U (en) | Tractor plowing reliability simulation test system | |
| CN204964204U (en) | Portable auto steering characteristic testing arrangement | |
| CN204530394U (en) | A kind of road roller data collecting system | |
| CN108918006A (en) | A kind of electrical moving agricultural machinery and implement farming power consumption test rack | |
| CN205643128U (en) | A way face friction coefficient test car | |
| CN202331126U (en) | Automatic control device for large-scale cotton picker | |
| CN203965302U (en) | A kind of wheel track adhesion coefficient intelligent measure car based on mechanical-electrical-hydraulic integration | |
| CN206002304U (en) | Automobile clutch Performance Match experiment with measuring device | |
| CN204788978U (en) | Register for easy reference measuring device is effectively encouraged on farmland ground | |
| CN209209059U (en) | A kind of unmanned plane power performance test macro | |
| CN110243619A (en) | A kind of simulation tractor ploughing reliability test system and test method | |
| CN207109785U (en) | A kind of dynamic compaction machinery construction navigation system and the dynamic compaction machinery using the construction navigation system | |
| CN205919895U (en) | Multi -functional road surface noise test device | |
| CN205636445U (en) | Road roughness digital information collection system | |
| CN211123250U (en) | Test system of vehicle front sensing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200505 Termination date: 20210619 |