JPS63178423U - - Google Patents

Description

[Brief explanation of the drawing]

Figures 1A and B are schematic side and front views, respectively, showing the operation of an automatic depth control device that is an embodiment of this invention, and Figure 2 is a cross-sectional side view of a combine to which the automatic depth control device is installed. FIG. 3 is a circuit diagram of the automatic handling depth control device. FIGS. 4A and 4B are schematic side and front views, respectively, showing the operation of a conventional automatic depth control device. 1... Grain culm conveyance chain, 3... Fulcrum, SW3
, SW4...Movement restriction switch.

Claims (1)

[Scope of Claim for Utility Model Registration] An automatic grain handling device that is attached to a combine harvester in which the reaping part slides laterally, and is equipped with a grain culm conveying means that swings up and down using the vicinity of the rear end as a fulcrum to change the grain culm clamping position. The depth control device includes upper and lower limit movement restriction switches that detect the grain culm conveyance means at the upper and lower limit positions of its swingable range, and when the upper limit movement restriction switch is turned on, the grain culm conveyance means is swung downward. and a reverse movement means for swinging the grain culm conveyance means upward when a lower limit movement restriction switch is turned on.