Manned rice transplanter

Abstract

The invention provides a sulky rice transplanter having excellent turning properties in distinction from the time of straight advancing and designed to automatically grade a field surface during turning at the side of a levee, or the like. This sulky rice transplanter is equipped with the following: wheels 6 and 7 driven with power from an engine 12, a right and a left side clutches I for individually engaging and disengaging the transmission to the wheels 7 by steering operation of a steering wheel 16, a freely liftable and lowerable seedling planting apparatus 3 performing grading operation during the turning and seedling planting operation when straight advancing and dials 184 and 185 for individually and automatically carrying out operation for grading the field and the seedling planting operation based on lifting and lowering positions of the seedling planting apparatus, the steering wheel steering angle during the turning and the number of revolutions of the wheel on the inside of the turning and individually independently changing the setting of control sensitivity of the lifting and lowering positions of the seedling planting apparatus when the grading operation and the seedling planting operation during the straight advancing are performed. Thereby, the sensitivity is automatically changed over interlockingly with the changeover of the seedling planting operation during the straight advancing operation and the grading operation during the turning operation and both the seedling planting operation and the grading operation can well be carried out. The operation can be optimized.

Description

technical field [0001] The present invention relates to a manned rice transplanter. Background technique [0002] As this type of prior art, as disclosed in Japanese Patent Application Laid-Open No. 2002-335722, when turning around at the end of the rice transplanting stroke at the top of the ground, the rear part of the rice seedling planting device is not rotated as a whole, but raised , It is a device with excellent turning performance that makes the front part of the buoy on the ground ground, and can turn quickly while leveling the ground. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2002-335722 [0004] However, the manned rice transplanter disclosed in Japanese Patent Laid-Open No. 2002-335722 requires a separate operation from the steering operation of the body, such that the seedling planting device is tilted forward and the front part of the flat float is grounded. The tilting action is time-consuming, during which the grounding state of the buoy can...

AI Technical Summary

Problems solved by technology

[0004] However, the manned rice transplanter disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 2002-335722 requires additional operations different from the steering operation of the body, so that the rice shoot planting device is tilted forward, and the front part of the flat buoy is grounded. The tilting action of the body takes time, during which the grounding state of the buoy cannot be quickly switched. In addition, when the body turns, in addition to the steering operation of the body, another operation must be performed

If you forget this, you will not be able to maintain proper grounding of the buoys when turning

[0005] In addition, the above invention cannot independently set the control sensitivities of the lift control of the seedling planting device at the time of straight-forward transplanting and turning. Therefore, it is not possible to optimally set the control sensitivity of the seedling planting device according to the transplanting plot regardless of the control sensitivity at the time of planting. control sensitivity

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