Planting – Plant setting – Plant dispensing
Patent
1992-03-19
1995-04-04
Reese, Randolph A.
Planting
Plant setting
Plant dispensing
172125, 414508, 111921, 111926, A01C 1102
Patent
active
054027403
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a vehicular machine which is available for transplanting vegetal seedlings onto plural seedbed lines by hauling an integrated planting unit by means of a tractive vehicle.
DESCRIPTION OF THE BACKGROUND ART
A prior art discloses such a vehicular machine available for transplanting vegetal seedlings onto plural seedbed lines, which consists of those components mounted on a working truck hauled by a tractive vehicle including the following; a seedling mounting table, a plurality of planting levers for simultaneously transplanting those vegetal seedlings mounted on the table onto multiple seedbed lines, and a working step which is provided on a working truck to permit a seedling-replenishing operator to mount on it so that he can sequentially replenish vegetal seedings onto the seedling mounting table containing decreased amount of vegetal seedlings.
Nevertheless, such a conventional vehicular machine available for transplanting vegetal seedlings onto multiple seedbed lines cited above still has problems to solve including the following:
The first problem is caused by the structure of the working truck which is easily movable in the vertical direction. Generally, vegetal seedlings are planted on such wide and plane field which is roughly plowed by operating a vehicular machine for transplanting vegetal seedlings like the one cited above. Since the working truck is obliged to follow up rolling on unlevelled ground surface, the working step constantly swings itself, thus obliging the seedling replenishing operator to follow up the replenishing work with unstable posture. Furthermore, since the operating system is designed to control pitching and rolling of the planting unit based on the level of the working truck, vegetal seedlings cannot properly be transplanted with constant depth.
The second problem is caused by excessively high position of the working step. Normally, a transmission shaft is disposed below the working step in order to transmit drive force from the front part of the working truck to the planting unit. Nevertheless, in order to align the height of the PTO shaft of the tractive vehicle with the height of the drive-power receiving unit of the working truck, the conventional vehicular machine cited above installs the working step at such a height position relatively aloft from the ground surface. In consequence, operator inconveniently mounts and dismounts himself on and from the working step, and yet, the height position of the seedling mounting table is too low from the operator's seat on the working step. As a result, the operator incurs much inconvenience when replenishing vegetal seedlings to the mounting table.
The third problem is caused by those reasons cited below. The owner of the vehicular machine in subject is likely to make use of a conventional general-purpose tractor owned by himself as the tractive vehicle. In this case, since the speed range of those conventional general-purpose tractors differs from each other according to manufacturers and models, if the operator drives the planting unit with drive force output from the PTO shaft of a conventional tractor, then, the speed of the tractor cannot correctly match the number of the rotation of the drive shaft of the planting unit, and in consequence, constant intervals between planted vegetal seedlings cannot be secured. Likewise, if gears of the PTO shaft were incorrectly shifted, those vegetal seedlings cannot properly be transplanted at constant intervals.
The forth problem is caused by those reasons cited below. The planting unit of the above conventional vehicular machine available for transplanting vegetal seedlings has the structure described below. Concretely, the seedling mounting table is installed with slight incline so that the front end can be positioned slightly higher than the rear part. Using a seedling conveying belt, those vegetal seedlings on the mounting table are sequentially delivered to an outlet at the rear end of the planting unit. Then, those plural
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Aoki Yoshikatsu
Kinoshita Eiichiro
Kubo Tamaki
Suzuki Kazuyuki
Takemoto Masahiro
Iseki & Co. Ltd.
Reese Randolph A.
Warnick Spencer
LandOfFree
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