Deep-plowing raiser for tractor

Abstract

The plow depth raiser for a tractor includes one raising oil cylinder for controlling the elevation of the suspension system, one plow depth controlling valve connected to the raising oil cylinder, one force feedback unit for measuring and acquiring the stress information of the pull rod in the suspension system, one position feedback unit for measuring and acquiring the rotation angle of the lift arm in the suspension system, one plow depth controller connected to the force feedback unit and the position feedback unit, and one operation unit connected to the plow depth controller, with the plow depth controller being connected also to the plow depth controlling valve. The present invention has raised plow depth controlling accuracy and high operation reliability of the hydraulic system.

Description

technical field [0001] The invention relates to an agricultural tractor technology, in particular to a tractor-used tillage depth lifter capable of controlling the tractor's tillage depth. Background technique [0002] At present, the form of tillage depth control for tractors generally uses the deformation of the spring as the force signal of the upper link or lower link of the suspension system, and feeds the signal back to the main control spool through a series of feedback mechanisms. The control spool controls the hydraulic device to adjust the tillage depth of the implement through the received force signal. However, the adjustment of the tractor’s tillage depth is controlled by using the deformation of the spring as the force signal. The performance of the machine cannot be effectively exerted. Moreover, the tractor hydraulic lifting control devices are currently mechanical lever mechanisms, which makes the accuracy of the position control and resistance control func...

AI Technical Summary

Problems solved by technology

[0002] At present, the form of tillage depth control for tractors generally uses the deformation of the spring as the force signal of the upper link or lower link of the suspension system, and feeds the signal back to the main control spool through a series of feedback mechanisms. The control spool controls the hydraulic device to adjust the tillage depth of the implement through the received force signal. However, the adjustment of the tractor’s tillage depth is controlled by using the deformation of the spring as the force signal. The performance of the machine cannot be effectively exerted

Moreover, the tractor hydraulic lifting control devices are currently mechanical lever mechanisms, which makes the accuracy of the position control and resistance control functions of the tractor lifting system low, and the stepless adjustable control of the lifting system cannot be realized; and the plowing depth control valve The spool shifting device is also operated by a mechanical lever, and its reset device is reset by a spring, which makes the working reliability of the hydraulic system components poor

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