JP2005304446A - Root-cutting harvester for vegetable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-sized light-weight root-cutting harvester for soft vegetables such as spinach, enabling easy operation on an open field or in a greenhouse, and cutting the root of the vegetable in high efficiency while keeping standing posture. <P>SOLUTION: The frame 1 of the harvester is fixed to the center shaft of wheels 2 at both ends of the wheels 2. A sprocket 4 is fixed to a driving shaft 3 connected to an engine and is connected to a sprocket 6 through a chain 5. The sprocket 6 is connected to an axial variation sprocket through a shaft, and the axial variation sprocket is connected to a metal rod 10 through a connection shaft separated from the center by about 2 cm. The metal rod 10 is connected to the tip end of a rod of a cutting blade 12 fixed to the frame 1 with a bearing through a shaft positioned opposite to the axial variation sprocket. An inclined plate 13 is attached to the tip end of the frame 1 in a manner to enable the adjustment of the ground height. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vegetable root cutting harvester that cuts roots of soft vegetables such as spinach, and more particularly to a small and lightweight vegetable root cutting harvester that can be operated in a standing position.

Conventionally, the root cutting harvesting of soft vegetables such as spinach is performed when the plant in the cultivation field reaches a shape that can be harvested, and the worker goes next to the planned harvesting strain in the field and holds a root of about 10 cm with a blade in one hand. This is done by holding a cutting sickle, moving forward while cutting the roots in a squatting position, and cutting it over a suitable distance, collecting the root stumps and storing them in a harvesting basket.
For example, Patent Document 1, Patent Document 2, and Patent Document 3 describe techniques related to a root cutting harvester for soft vegetables.

JP-A-8-252013 Japanese Patent Laid-Open No. 9-262021 JP-A-11-289844

However, it is necessary for the harvesting work by the conventional method to maintain the squatting posture for a long time, and while the aging of producers is progressing year by year in the agricultural production site, the squatting posture is sustained for a long time. For this reason, many producers complain of back pain, and shortening working hours and establishing lighter labor techniques are urgent issues.
In addition, in the production of soft vegetables such as spinach, since most farms have a small management scale, there is a demand for cost reduction in newly introduced technologies.

  The present invention was made to solve these problems, and when harvesting soft vegetables such as spinach, it is easy to operate in an open field or facility, and rooting work can be performed in a standing posture. An object of the present invention is to provide a small and lightweight vegetable root cutting harvester that can cut the root of vegetables with high efficiency.

  In order to solve the above problems, the present invention has a crank that converts a rotational driving force obtained by a driving force generating means into a longitudinal movement driving force of a cutting blade, and is attached to a frame on the side of the front wheel. A vegetable root cutting and harvesting machine that cuts the root of vegetables by moving the blade back and forth.

  Since the rotational driving force obtained by the driving force generating means is converted into the longitudinal movement driving force of the cutting blade by the crank, the cutting blade can move back and forth at high speed and can efficiently cut the vegetable root. it can. Such a high-speed motion of the cutting blade can be realized by using a driving force generating means as a driving shaft with a power source, connecting a sprocket and a chain to the driving shaft with a power source, and transmitting power to the crank. By adjusting the rotational speed of the drive shaft with the power source, the frequency of the longitudinal movement of the cutting blade can be changed. Further, by changing the position where the cutting blade is attached to the frame, it is possible to adjust the burial depth of the cutting blade in the soil. By these operations, it is possible to easily perform a harvesting operation corresponding to the harvesting situation such as the kind of vegetables to be harvested.

In the present invention, the crank includes a shaft variable sprocket having a connecting shaft at a position separated from a central axis by a predetermined length, and a metal rod connected to the shaft changing sprocket by the connecting shaft. The tip of the handle of the cutting blade is attached.
When the crank is configured as described above, the rotational motion obtained by the driving force generating means can be effectively converted into the high speed longitudinal motion of the cutting blade. Moreover, the drive angle of a cutting blade can be adjusted by changing the position which attaches a cutting blade to a metal bar.

The present invention is characterized in that an inclined plate made of a transparent triangular plate for raising the lower leaf of vegetables is provided on the front side of the cutting blade.
As the aircraft moves forward, the lower leaf of the vegetable rises along the slope of the inclined plate, so that it can be harvested while confirming the vegetable stock position. Further, by adjusting the inclination angle according to the item or shape of the vegetable, efficient harvesting according to the item or shape becomes possible.

  The present invention is characterized by including a handle for operation. By providing the handle, the vegetable root can be cut in a standing posture, so that the physical burden on the operator can be reduced.

  According to the present invention, since the root can be cut in a standing posture, the physical burden on the operator can be reduced, and the cutting blade is moved forward and backward at high speed to efficiently cut the vegetable root. Can do. Further, since the airframe is small and light, even one woman or an elderly person can easily operate, and the running performance is stable. Furthermore, since the depth of root cutting can be adjusted according to the field conditions and the growing conditions of the crops, it can be adapted to various items and cultivation conditions. In addition, since the driving mechanism is simple, the manufacturing cost can be reduced.

Hereinafter, the present invention will be described based on the embodiments.
FIG. 1 is an overall perspective view showing a vegetable root cutting harvester according to an embodiment of the present invention, and FIG. 2 is a plan view of the vegetable root cutting harvester shown in FIG. Moreover, Fig.3 (a) is a side view of a vegetable root cutting harvester, FIG.3 (b) is a figure which shows the drive state of a cutting blade. Moreover, FIG. 4 is the figure which looked at the vegetable root cutting harvester from the front.

The vegetable root cutting harvester according to the embodiment of the present invention includes a frame 1, wheels 2, a drive shaft 3 with a power source, a sprocket 4, a chain 5, a sprocket 6, a shaft 7, a shaft changing sprocket 8, a connecting shaft 9, and a metal rod. 10, a shaft 11, a cutting blade 12, an inclined plate 13, and a handle 14.
The frame 1 forming the main body of the vegetable root cutting harvester is fixed to the central axis of the wheel 2 at both ends of the wheel 2 so that straightness is stable. The wheels 2 are wide wheels having a width of 13 cm in order to improve straightness and running stability. The drive shaft 3 with the power source is a drive force generating means capable of adjusting the rotation speed, and the sprocket 4 is fixed to the drive shaft 3 with the power source. The sprocket 4 is connected to the sprocket 6 by a chain 5.

  The sprocket 6 is connected to a shaft changing sprocket 8 via a shaft 7, and this shaft changing sprocket 8 is connected to a metal rod 10 by a connecting shaft 9 located at a position about 2 cm away from the center. The metal rod 10 can be formed using, for example, iron. In this way, the crank consisting of the shaft-changing sprocket 8 and the metal rod 10 is mounted at the center of the fuselage, and the metal rod 10 is bearing on the frame 1 via the shaft 11 on the side opposite to the shaft-changing sprocket 8. It connects with the tip part of the handle of the cutting blade 12 fixed by.

  FIG. 3B shows details of the cutting blade 12 being attached to the metal rod 10 and the frame 1. The cutting blade 12 adjusts the driving angle of the blade by changing the attachment position with the metal rod 10. Is possible. Moreover, the burial depth of the cutting blade 12 in the soil can be adjusted by changing the attachment position with the frame 1.

The inclined plate 13 is attached to the front end of the frame 1 so that the height of the inclined plate 13 can be adjusted with respect to the ground, and is formed of a transparent triangular plate inclined by about 45 °. When the aircraft moves forward, the lower leaves of the vegetables rise along the inclination of the inclined plate 13, so that the vegetables can be harvested while visually confirming the vegetable stock position. Further, by adjusting the inclination angle according to the item and shape of the vegetable, efficient harvesting according to the item and shape becomes possible.
A handle 14 is attached to the frame 1, and an operator operates the handle 14 while holding the handle 14 by hand.

Next, operation | movement and the usage method of the vegetable root cutting harvester which concern on embodiment of this invention are demonstrated.
The root cutting operation is performed by arranging the vegetable root cutting harvester of this embodiment on the left side of the harvested vegetables. The vegetable root cutting harvester is stopped at the work start position, and the cutting blade 12 and the metal rod 10, and the cutting blade 12 and the frame 1 are connected so that the lower end of the cutting blade 12 is at a required depth in the soil. To adjust. The drive shaft 3 with the power source is driven at the start end of the basket, and after the cutting blade 12 is buried in the soil by the back-and-forth movement, the worker advances the vegetable root cutting harvester manually. When the aircraft is advanced, the inclined plate 13 raises the lower leaf of the vegetable, so that the aircraft is operated by the handle 14 while visually confirming the position of the stock.

  The cutting principle will be described with reference to FIG. 3B. When the connecting shaft 9 of the shaft changing sprocket 8 comes to the position A, the handle of the cutting blade 12 is inclined about 5 degrees with respect to the direction perpendicular to the frame 1. When the connecting shaft 9 comes to the position B, the handle of the cutting blade is in a vertical state. The cutting blade 12 reciprocates between A and B at a distance of about 4 cm per second for about 3 cm while burying a depth of about 2 cm below the base of the vegetable stock. The reciprocating motion of A and B can cut the root at a depth of about 2 cm underground.

At the end of the harvested vegetables, the aircraft is swiveled with the front and rear side wheels as fulcrums, and the vegetable rooting and harvesting machine is moved to another basket.
As described above, rooting of a harvested product to be harvested is performed in the field while repeating the root cutting operation and the movement between the furrows. After the root cutting operation is completed within an appropriate range, the harvested product is stored in a harvesting basket.

  INDUSTRIAL APPLICABILITY The present invention can be used as a vegetable rooting and harvesting machine that cuts roots of soft vegetables such as spinach, and can realize a small and lightweight vegetable rooting and harvesting machine that can work in a standing posture. it can.

It is a whole perspective view which shows the vegetable root cutting harvester which concerns on embodiment of this invention. It is the top view which looked at the vegetable root cutting harvester concerning the embodiment of the present invention from the upper part. (A) is a side view of the vegetable root cutting harvester which concerns on embodiment of this invention, (b) is a figure which shows the drive state of a cutting blade. It is the figure seen from the front of the vegetable root cutting harvester which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Wheel 3 Drive shaft with power source 4 Sprocket 5 Chain 6 Sprocket 7 Axis 8 Axis variable sprocket 9 Connection shaft 10 Metal rod 11 Axis 12 Cutting blade 13 Inclined plate 14 Handle

Claims (5)

  It has a crank that converts the rotational driving force obtained by the driving force generating means into the longitudinal movement driving force of the cutting blade, and cuts the vegetable root by the longitudinal movement of the cutting blade attached to the frame on the side of the front wheel. A vegetable rooting and harvesting machine.   2. The vegetable root cutting according to claim 1, wherein the driving force generating means is a drive shaft with a power source, and a sprocket and a chain are connected to the drive shaft with a power source to transmit power to the crank. Harvester.   The crank is composed of a shaft changing sprocket having a connecting shaft at a position away from the central shaft by a predetermined length, and a metal rod connected to the shaft changing sprocket by the connecting shaft. The vegetable root cutting harvesting machine according to claim 1 or 2, wherein a tip portion is attached.   The vegetable root cutting harvester according to any one of claims 1 to 3, further comprising an inclined plate made of a transparent triangular plate for raising the lower leaf of the vegetable on the front side of the cutting blade.   The vegetable root cutting harvester according to any one of claims 1 to 4, further comprising an operation handle.

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