Rotary separating and planting mechanism with offset elliptic gear of walking rice transplanter

Abstract

The invention discloses an offset elliptical gear rear-inserting rotary splitting mechanism of a walk-type rice transplanter. The center sprocket in the sprocket box drives the left and right gear boxes fixed on the two ends of the central shaft to rotate. In the gear box, the fixed central elliptical gear drives the planetary elliptical gear fixed on the planetary shaft through the middle elliptical gear. A planting arm is fixedly installed at one end of the planetary shaft protruding from the gear box, and its absolute motion is the synthetic motion of the non-uniform rotation of the planetary gear relative to the gear box and the circular motion of the gear box relative to the central shaft. The principle of the planetary system in this mechanism is: viewed from the side, the axes A, B, and C of the central axis, the intermediate axis, and the planetary axis are arranged in a triangle. The gear box rotates once, and the planting arm transplants once. The relative movement trajectory of the claws is round at the top and pointed at the bottom, which is like a "dolphin-shaped" curve, ensuring that the insertion hole is small during transplanting, and reducing the inverted and floating seedlings. It is suitable for the rice transplanting requirements of the walking rice transplanter.

Description

technical field [0001] The invention relates to agricultural machinery, in particular to an offset oval gear rotary splitting mechanism for a walking rice transplanter. Background technique [0002] At present, the rice transplanter sold on the market mainly has two kinds of planting mechanisms: a crank rocker type sub-insertion mechanism and a rotary type sub-insertion mechanism. The crank-rocker type inserting mechanism can change the relative movement trajectory of the seedling claws by changing the position of the crank rotation center and the swing center of the rocker. When the relative movement trajectory is "waist-shaped", it is used for riding rice transplanters. Used for walk-behind rice transplanters when the trajectory is "dolphin-shaped". The relative movement trajectory of the claws of the rotary splitting mechanism is "waist-shaped", which is mainly used for riding rice transplanters. If it is used for walking rice transplanters, the opening of the rice trans...

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