초록 ▼

A row following guidance device connecting the right and left ends of the forward portion of a row crop implement to a tractor will adjust the length of each left and right connection as the tractor deviates laterally from alignment with the crop rows to correctively guide the implement in alignment

A row following guidance device connecting the right and left ends of the forward portion of a row crop implement to a tractor will adjust the length of each left and right connection as the tractor deviates laterally from alignment with the crop rows to correctively guide the implement in alignment with the crop rows. A row following wheel signals a steering valve upon any lateral deviation of the implement from crop row alignment, the steering valve correcting the deviation by lengthening one connection between the tractor and the implement and shortening the other. The row following wheel is mounted for movement independent of the implement so that the implement may be raised or lowered without affecting the operation of the wheel.

대표청구항 ▼

A row following guidance device for a row crop implement drawn by a tractor with a hitch, comprising: an “L”-shaped portion of an inverted “U”-shaped support means, having means for rigid attachment to the crop implement at one end of one leg of which “L”-shaped portion which leg extends horizontall

A row following guidance device for a row crop implement drawn by a tractor with a hitch, comprising: an “L”-shaped portion of an inverted “U”-shaped support means, having means for rigid attachment to the crop implement at one end of one leg of which “L”-shaped portion which leg extends horizontally at a right angle to the direction of travel, said “L”-shaped portion further having a leg depending from said one leg; an extending support means aligned with the direction of travel and rigidly attached to said “L”-shaped portion at the juncture of its two legs, said support means extending outwardly from said “L”-shaped portion to a free end thereof; a lever connected intermediate its ends, for pivotal rotation about a horizontal axis oriented transverse to the direction of travel, to a point on the depending leg of said “L”-shaped portion near the lower end thereof, said lever having means for pivotal connection at its lower end to the trailing end of an arm of the tractor hitch and being pivotally connected at its upper end to the end of a horizontal tie rod which rotates about a vertical pin affixed to said “L”-shaped portion at a point thereon aligned with said means for attachment to the crop implement; a hyraulic cylinder means pivotally connected at one end to said extending support means at a point thereon near its free end and pivotally connected at its other end to the horizontal tie rod near its connection to said lever; and means for detecting lateral movement of the crop implement with respect to the crop rows and transmitting proportionate signals to a means for controlling said hydraulic cylinder, whereby the crop implement will be guided along a crop row independent of the relative lateral position of the tractor.