Hanging agricultural implement operation resistance measuring and sensing device

Abstract

The invention discloses a hanging agricultural implement operation resistance measuring and sensing device. The device comprises a pin shaft type radial two-way force strain sensor structure, a distribution and bridging mode, and a positioning and orienting structure of a sensor and a suspension lug. The technical key points are as follows: three pin shaft type radial two-way force sensors are mounted on an upper U-shaped suspension lug and two lower U-shaped suspension lugs of a suspension agricultural implement, the pin shaft sensors and the U-shaped suspension lugs have specific structural design, orientation and limiting of pin shafts are ensured, the pin shaft sensors are resistance strain type force sensors, three pin shaft type force sensors respectively sense X-direction component force and Y-direction component force on three U-shaped suspension lugs of the agricultural implement through skillful distribution and bridge circuit connection, and the three pin shaft type force sensors are connected in parallel according to a specific connection sequence to form a total agricultural implement X-direction and Y-direction total component force measurement circuit, and the total resistance and direction of the whole hanging agricultural implement during operation can be accurately measured according to the force synthesis principle.

Description

technical field [0001] The invention relates to a suspended agricultural machinery operation resistance measurement sensing technology and device, in particular to a suspension unit operation resistance measurement sensing method and device for field operations such as soil preparation, sowing, rotary tillage, and intertillage. Background technique [0002] The operation resistance of agricultural machinery is an important parameter in the development of new agricultural machinery and the matching of agricultural machinery power selection. In the operation of agricultural machinery, if the real-time dynamic monitoring and grasp of the change of operation resistance can be realized, it will have practical significance for improving the operation quality and realizing intelligent control. At present, most of the non-self-propelled field work tools are suspended agricultural implements. The tractor is equipped with a standardized three-point hydraulic suspension mechanism. Thr...

AI Technical Summary

Problems solved by technology

Specifically, the three mounting lugs on the frame of the agricultural machinery are connected with the ball joints at the end of the upper and lower rods of the hydraulic suspension mechanism of the tractor through the pin shaft to transmit the lifting, pressing and traction forces. The existing method for measuring the working resistance of agricultural machinery is one It is to make a force-measuring frame separately, configure multiple force sensors on the force-measuring frame, connect the force-measuring frame to the tractor suspension device, and then fix the force-measuring frame with the agricultural implements; the other is to connect three common connecting pins The shaft is replaced with three pin-type sensors, and then used with the inclination sensor to measure the working resistance. Another is to install five pull rods on one upper rod, two lower rods and two lower rod lifting arms of the tractor suspension. The pressure sensor is used for measurement; the structures of the above-mentioned measuring devices are relatively complex, and more than three sensors are required to measure each sensor separately and a more complicated force calculation process is required to obtain the working resistance value.

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