| 摘要 |
A THREE-POINT AUTO-HITCH DUNAMOMETER (1) PROVIDES A PRACTICAL WAY FOR MEASURING DRAFT AND VERTICAL FORCE ON IMPLEMENT AT THE TRACTOR THREE-POINT HITCH. THE DYNAMOMETER ADAPTS INSTRUMENTED AND INVERTED U FRAME (2) THAT IS MOUNTED BETWEEN TRACTOR AND IMPLEMENT. THE DYNAMOMETER IS EQUIPPED WITH THREE STEEL EXTENDED ACTAGONAL RING TRANSDUCERS (8) THAT ARE LOCATED BETWEEN THE INVERTED U FRAME (2) AND HOOKS (9,10,13). SPECIAL FEATURES INCLUDE VARIABLE WIDTH AND HEIGHT, AND QUICK HITCH CAPABILITY TO SUIT FOR USE WITH IMPLEMENTS OF CATEGORIES 1 AND 11. IN ADDITION, THE DYNAMOMETER PERMITS THA PASSAGE OF TRACTOR'S PTO SHAFT ASSEMBLY. THE PC-DAS ON-BOARD THE TRACTOR IS INTERFACED TO VARIOUS EXTENDED OCTAGONAL RING TRANSDUCERS (8) OF THE DYNAMOMETER. THE PC-DAS INCLUDES USER FRIENDLY SOFTWARE FOR SCANNING, DISPLAYING, AND RECORDING IN REAL-TIME DRAFT AND VERTICAL FORCE ON IMPLEMENT BEHIND THE TRACTOR. THE MEASUREMENT FROMTHIS DEVICE CAN BE USED TO GENERATE DRAFT MODELS FOR VARIOUS TRACTOR-IMPLEMENT OPERATIONS FOR AGRICULTURAL DATABASE.FURTHERMORE , THE MEASUREMENT FROM THIS MAY BE GEO-REFERENCE SO AS TO PRODUCE A MAPSHOWING THE SOIL RESISTANCE ACROSS THE FIELD DURING TRACTOR-IMPLEMENT OPERATION.
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