JPH08224026A - Harvesting section mechanism in rootcrop harvester - Google Patents

Abstract

PURPOSE: To provide a rootcrop harvester mechanized to the utmost designed to improve harvesting work by hand, a sort of heavy labor to pull rootcrops off the field in a posture with the body bent down. CONSTITUTION: There are provided a draw section to pull up a rootcrop by gripping the leaves with a pair of the fronts of a conveyer belt risen backward and a conveying device made up of the rear of a pair of conveyer belts 11 and a pair of roller belts 15 under the belts 11 and to convey a rootcrop backward by gripping and conveying the upper part of the leaves through the belts 11 while gripping the lower part of the leaves with rollers 14 and drivenly guiding it, the risen backward angle of the roller belts 15 is made milder than the slope of the conveyer belts; after contact of the upper face of a rootcrop body with the rollers 14, the leaf-gripping force of the pair of the rears of the conveyer belts is set so as to allow the rootcrop to slidingly move downward off the conveyer belts 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for mechanizing a series of harvesting operations from the step of extracting root vegetables such as carrots and radishes from the ground to the step of transferring them to a post-treatment step. is there.

[0002]

2. Description of the Related Art Conventionally, root crops have been harvested manually by manually pulling out the root crops buried in the field one by one and then cutting off the leaves with a knife.

[0003]

[Problems to be Solved by the Invention]

[Structure] Since the manual harvesting work of root vegetables is a heavy labor of pulling the root vegetables out of the field in a bent posture, it has been desired to realize a mechanized harvester such as a combine harvester. This is a serious problem in large-scale fields. INDUSTRIAL APPLICABILITY The present invention realizes and provides a root vegetable harvester in which a series of steps from root vegetable extraction to leaf cutting is mechanized.

[0004]

In order to achieve the above-mentioned object, the present invention clamps a leaf portion of a root vegetable by a pair of left and right front endless rotation belts which are driven to face each other in a rearwardly inclined state. And a pair of left and right rear endless rotation bands and a pair of left and right guide mechanisms arranged below the left and right rear endless rotation bands, and a lower part of the leaf part of the pair of guides. While guiding and guiding between the mechanisms, a transport device for transporting the root vegetables sent from the pulling section backward by sandwiching and transporting the upper part of the leaf part by driving a pair of rear endless rotation bands is provided, respectively. The rear endless rotation band and the guide mechanism are arranged relative to each other such that the vertical interval between the rear endless rotation band and the pair of guide mechanisms becomes wider toward the lower side in the conveyance direction, and the rear root endless rotation band and the guide mechanism have a predetermined distance or more in the conveyance root vegetable. Downward movement force of And a clamping force with respect to the root vegetable leaf portion by the pair of rear endless rotation bands is set so that the downward movement from the rear endless rotation band of the root vegetable is allowed, and the guide mechanism is set to a large number of times. It consists of a roller belt that is driven by connecting movable rollers, and the left and right roller belts are
The root and leaf portions located between them are pressed against each other so as to be pinched, and the rotation axis of the roller is allowed so that the root and leaf portions held by the left and right roller belts can be moved up and down. A feature is that the arrangement direction of the heart is set.

[Operation] The extraction unit functions to extract the root vegetables in the ground and lift them upward by sandwiching the leaves protruding above the ground, and the conveyor device uses a pair of guide mechanisms to remove the leaves. With the lower transport path formed,
The pair of rear endless rotary bands exerts a function of gripping the upper part of the leaf part and giving a conveying action. In the carrying device, the vertical distance between the guide mechanism and the rear endless turning band is widened toward the lower side in the carrying direction, and downward movement of the root vegetables is allowed in the pair of rear endless turning bands. Because there is
The guide mechanism approaches the root of the leaf portion as it is conveyed backward, and finally enters the contact conveyance state in which it is conveyed in contact with the upper surface of the root vegetable body.After that, the pair of rear endless rotation bands and the leaf portion move up and down. The contact movement state is maintained by moving relative to. As a result, at the end of this carrier,
All root vegetables can now be unified in a contact conveyance state, and the root vegetables can be delivered to a post-treatment process such as a cutter device that cuts leaves at a fixed posture and position. Also,
Since the guide mechanism is constituted by the pair of driven roller belts, the conveying force acts on the lower portion of the leaf portion in addition to the conveying force by the rear endless rotation band. As compared with the case where the conveying force is applied only to the upper portion of the leaf portion, this enables the rearward transfer with less risk of cutting of the leaf portion and disturbance of the conveying posture, and the roller allows smooth vertical movement with less resistance.

[Advantages of the Invention] Therefore, a series of steps from the extraction of root vegetables from the ground to just before the post-treatment of a cutter device and the like can be mechanized, and the root vegetables handed over to the post-treatment can be stably placed in a fixed posture / By aligning the positions, the mechanization process was smooth and stable, and the labor was reduced while contributing to the improvement of harvest efficiency.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 5 shows a root vegetable harvester according to the present invention, and FIG. 4 is a plan view of the front portion thereof, in which 1 is a pull-out section, 2 is a conveying device, 3 is a leaf cutting device, 4 is a harvesting unit,
Reference numeral 5 is a crawler traveling device, and 6 is a control section. Pull-out part 1
Is equipped with a pair of left and right weeding tools 7, 7 at the tip,
It comprises a conveyor type sandwiching conveyor device 9 extending immediately after the weeding tool 7 and the site of the leaf cutting device 3.
The sandwiching conveyor device 9 is composed of a pair of left and right conveyor belts 11 and 11 that are driven so as to face each other in a rearwardly inclined posture. The transport device 2 is composed of the above-mentioned pair of left and right transport belts 11 and 11 and a pair of left and right guide mechanisms 12 and 12 disposed below the transport belts 11, and the lower part of the root vegetable leaf portion is provided between the pair of guide mechanisms 12 and 12. By guiding and guiding the upper part of the leaf part by driving the pair of conveyor belts 11 and 11, the root vegetables sent from the pull-out part are conveyed backward. As shown in FIGS. 1 and 2, the guide mechanism 12 has a horizontal axis Y for each chain link 13.
The roller belt 15 is provided with a rotatable roller 14 around the roller belt 15. The roller 14 is attached to the chain link 13 in a state in which an outward biasing force can be generated by a spring 16, so that the root portion of the root vegetables is nipped by the left and right rollers 14 and 14 facing each other and is transferred backward. It receives a force, and its transfer speed is almost the same as the speed of the conveyor belt 11. Further, the rearward inclination angle of the guide mechanism 12 is set to be extremely gentle so that the vertical distance between the conveyor belt 11 and the guide mechanism 12 becomes wider toward the lower side in the conveying direction. As shown in FIG. 3, the left and right conveyor belts 11 and 11 are provided with a large number of rolling wheels 17 for pressing the conveyor belts 11 and 11 in the mutually existing direction to generate a nipping force for the leaves.
In the front part 11a of the conveyor belt from the front end part to the guide mechanism 12 part, the strength of the spring 8 of the wheel 17 is set so that a strong clamping force acts to pull out the root vegetables in the ground. Further, in the rear portion 11b of the conveying belt on the rear side, the clamping force of the leaf portion is applied to the front portion of the conveying belt
The spring 10 is thinner than the spring 8 in 1a, so that it is set to be weak. Guide mechanism 12
A leaf cutting device 3 that cuts off the leaves of the root vegetables with the rotary cutter 18 is disposed at the rear position of.

The main operation of the harvesting work will be described. The root part in the ground is pulled out by gripping the leaves with a strong gripping force by the front part 11a of the conveyor belt and lifting them upward, and then the rear part 11b of the conveyor belt. And guide mechanism 1
The root force is transferred backward and upward by the conveying force of 2. However, since the inclination of the guide mechanism 12 is gentle, the upper surface of the root vegetable body gradually approaches the roller 14, and at the rear portion of the guide mechanism 12, the upper surface of the root vegetable body moves to the roller 14. The contact conveyance state is reached. After that, since the rearward conveying force is transmitted to the root vegetables by the weak clamping force of the rear portion 11b of the conveyor belt and the slipping movement of the leaves downward is allowed, the root vegetables are always indispensable at the end of the conveyor belt 11. Contact transfer state,
Next, a certain posture and position with respect to the leaf cutting device 3 to be withheld are maintained.

In the embodiment of the present invention, the pair of conveyor belt front portions 11a correspond to the front endless rotation belt, and the conveyor belt rear portion 11b corresponds to the rear endless rotation belt, respectively. It may be configured by a transport belt having a configuration or a transport chain.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a transfer device portion.

FIG. 2 is a partial side view showing the structure of a chain with rollers.

FIG. 3 is a plan view of a transfer device portion.

FIG. 4 is a plan view of the front part of the harvester.

[Fig. 5] Side view of a harvester for root vegetables

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pull-out part 2 Conveyor device 11a Front endless rotation band 11b Rear endless rotation band 12 Guide mechanism 14 Roller 15 Roller belt

Front page continued (72) Inventor Mikio Okada 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Inventor Yoshihide Kanai 64, Ishizukita-machi, Sakai City Osaka Prefecture Kubota Sakai Factory, Ltd.

Claims (1)

[Claims] 1. A pair of left and right front endless rotation belts (11a), (11a), which are driven to face each other in a rearwardly inclined state, hold the root portion of a root vegetable and pull out the root vegetable from the ground. And a pair of left and right rear endless rotation bands (11a) and (11a), and a pair of left and right guide mechanisms (12) and (12) disposed below the left and right endless rotation bands (11a) and (11a). The lower part of the leaf portion is provided with the pair of guide mechanisms (1
2) and (12) are guided and guided, and the upper part of the leaf part is nip-transferred by driving the pair of rear endless rotation bands (11b) and (11b), whereby the pull-out part (1).
Conveying device that conveys root vegetables sent from the back (2)
And a pair of rear endless rotation bands (11b),
(11b) and the pair of guide mechanisms (12), (12)
The rear endless rotation band (11b) and the guide mechanism (12) are arranged relatively to each other so that the vertical interval between the two becomes wider toward the lower side in the transport direction, and the transport root vegetable has a downward movement force higher than a predetermined value. When operated, the pair of rear endless rotation bands (11b), (11) are allowed to allow downward movement of the root vegetable from the rear endless rotation band (11b).
b) setting the clamping force against the root leaf part, and further setting the guide mechanism (12) to a large number of rotatable rollers (1
4) is composed of a driven roller belt (15), and the left and right roller belts (15), (15) are abutted against each other so that the root leaf portions located between them are sandwiched. While energizing, the left and right roller belts (15),
The harvesting part structure of a root vegetable harvesting machine in which the arrangement direction of the rotation axis of the roller (14) is set so that the root leaf part sandwiched by (15) is allowed to move up and down.