JPH06311817A - Head-forming vegetable harvester - Google Patents

Abstract

PURPOSE:To surely pull out and transfer a head-forming vegetable from a field by supporting the tip end of a screw conveyor with a guiding member thrust into the soil. CONSTITUTION:A screw conveyor 6 is divided into plural screw shafts, which are connected in series to form a continuous conveyor. Power is applied to the conveyor from the delivery end. The tip end of the screw conveyor is supported with a guide member 11 thrust into soil in work and the head-forming vegetable on the field is directly and smoothly sucked to the pulling part of the screw conveyor with the guide member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized ride-on type head-mounted vegetable harvesting machine having a screw conveyor for harvesting head-shaped vegetables such as cabbage, Chinese cabbage, and lettuce from a field and conveying them in an inclined state.

[0002]

2. Description of the Related Art Conventionally, various types of heading vegetable harvesters have been proposed for harvesting heading vegetables. For example, in the front part of the machine, the tip part opens in a figure-eight shape and pulls out from the field as the machine progresses while pinching the rhizomes of the heading vegetables that are vegetated in the field from both left and right sides. , A pair of left and right screw conveyors consisting of a conveyor that conveys the extracted headed vegetables in a state of being inclined toward the rear of the machine body, dividing the path from the front end of the extraction portion to the end of the conveyor into a plurality of sets of spiral shafts, The applicant of the present invention has proposed a structure in which a plurality of divided spiral shafts are connected at the same position on the left and right sides to form a continuous conveyor.

[0003]

By the way, like the screw conveyor of the above-mentioned conventional headed vegetable harvesting machine, the tip is opened in a figure-eight shape, and only by rotating this part, the harvested product is pulled out. Since it has only the function of guiding the crop to the section, but has no suction function, the delivery of the harvested product to the extraction section was not carried out smoothly. Further, since a plurality of sets of divided spiral shafts are connected at the same position on the left and right sides to form a continuous conveyor, the left and right screw conveyors have the same inclination angle, and the left and right conveyor cans have a constant gap. Clogged stones and jammed crops. The feed action of the left and right spiral shafts will be interrupted at the connection position, and the harvest will stagnate at the connection position, and if it is not pushed out by the harvest that moves next, the stagnation will be prolonged and work efficiency will be poor. However, there was a problem that it would damage the harvest. The present invention is intended to solve the above problems.

[0004]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention comprises: (1) Rotating the front part of the machine so that the rhizomes of the heading vegetables vegetated in the field are clamped from both left and right sides. While in the heading vegetable harvester provided with a pair of left and right screw conveyors that pull out from the field as the machine progresses and convey toward the rear of the machine, the screw conveyor is divided into a plurality of spiral shafts, and a plurality of divided spirals. Connect the axes in series to form a continuous conveyor,
Power is transmitted from the end side, and the tip side is supported by a guide body that is stuck in the soil during work.

(2) The pulling and conveying section including the screw conveyor is constituted by a holding belt arranged above the screw conveyor, a take-in reel, a guide body arranged at the tip of the screw conveyor, and the like. (3) The guide body is composed of a guide rod having an eight-shaped expanse, and a straightening plate that guides into the soil and guides the soil to the left and right sides, (4) the screw conveyor. Is that the inclination angle from the pull-out section to the transport section is different for the left and right, (5) The connection position of the divided spiral shaft is configured to be different for the left and right, (6) Above At least one of the screw conveyors is elastically supported.

[0006]

With the above structure, the headed vegetable harvester of the present invention has the following functions. The screw conveyor is divided into multiple sets of spiral shafts,
Multiple sets of divided spiral shafts are connected in series to form a continuous conveyor, power is transmitted from the end side, and the tip side is supported by a guide body that is stuck in the soil during work. Therefore, the heading vegetables in the field are directly sucked by the guide body in direct contact with the pull-out portion of the screw conveyor. Since the pulling-out and conveying section including the screw conveyor is composed of a holding belt arranged above the screw conveyor, a scraping reel, a guide body arranged at the tip of the screw conveyor, etc. It is pushed in, pressed by the presser belt, and smoothly pulled out and conveyed.

Since the guide body is composed of a guide rod having an eight-shaped expanse and a current plate that guides the soil into the soil and guides the soil to the left and right sides, stones in the field are caught. Is almost gone. As for the screw conveyor, the inclination angle from the pull-out part to the transfer part is different on the left and right,
Large stones carried by the left and right screws incline to the left and right and fall from the screw conveyor during the transportation process. Also, small stones fall from the gap created between the left and right screws. Since the connecting positions of the divided spiral shafts are configured to be different for the left and right, the harvested product moves smoothly without being stagnant at the connecting positions. Since at least one of the screw conveyors is elastically supported, even when stones are caught between the left and right screws, the stones spread and the stones fall. In addition, it corresponds to the size of the rhizome of headed vegetables.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. 1 to 3, reference numeral 1 is a headed vegetable harvesting machine, and the headed vegetable harvesting machine 1 is equipped with crawlers 2 and 2 which are paired left and right and are capable of spin rotation. An engine 3 is mounted in the center of the fuselage between the crawlers 2 and 2.
A hydraulic pump 4 and a transmission 5 including a hydraulic continuously variable transmission (HST) are mounted, and power is transmitted from the engine 3. In addition, a pair of left and right screw conveyors 6, 6 are arranged in a diagonal direction from the lower front part of the machine body through the transmission 5 to the upper center part of the machine body to remove the heading vegetables vegetated in the field and convey them backward. The screw conveyors 6 and 6 are pivotally supported at their base ends so as to vertically move the front portion. A control unit 7 is provided on the side of the engine 3.

As shown in FIGS. 7 and 8, the screw conveyors 6 and 6 rotate while holding the rhizomes of heading vegetables (eg cabbage) vegetated in the field from both left and right sides. With the progress, the pulling-out portion 6a that pulls out from the field, and the first transporting portion 6b and the second transporting portion 6c that carry over the heading vegetables that have been pulled out by the pulling-out portion 6a while holding the rhizomes therebetween and transport them diagonally upward and rearward of the machine body.
It consists of and. A work table (processing space) 8 for manually cutting the rhizome portion from the conveyed headed vegetables is provided in a substantially central portion of the machine body facing the conveyance end portion of the screw conveyor 6. On the workbench 8, FIG. 3 and FIG.
Further, as shown in FIG. 6, the slatted upper workbench 8a is provided so as to be rotatable and inclined to one side. Behind the workbench 8, a container 9 for accommodating the cut headed vegetables
Forklift-shaped container placing part 10 for placing
The upper part is closer to the workbench 8 and the lower part is separated from the workbench 8 so as to be movable up and down diagonally.

A pull-out portion 6a of the screw conveyor 6
Is a pair of guide rods 11a that open in an eight shape in a plan view and advance in a state of being stuck in a field during work to facilitate introduction of a rhizome portion of a headed vegetable, and the guide rods 11a.
a guide body 11 formed of a current plate 11b that is provided continuously to a and guides the soil in the field to the left and right sides;
Further, there is provided a pulling-out / conveying spiral body 13 whose tip is rotatably supported and which is inclined so that the inclination angles of the left and right things are different. In addition, the pull-out section 6a to the first transport section 6b,
The left and right connection positions of the first transport unit 6b to the second transport unit 6c are shifted to the front and rear. Below the starting end of the second conveyor 6c, a cutting blade 12 for cutting the root of the headed vegetables conveyed by the screw conveyors 6 is provided. Support frames 14, 14 are provided on both sides of the screw conveyors 6, 6 to rotatably support the screw conveyors 6, 6, and one of them is moved in the left-right direction by three moving shafts 15 and springs 15a. I am able to move to.

Rotational support members 16 and 16 are fixed to both sides of the rear ends of the support frames 14 and 14, and the rotation support members 16 and 16 are pivotally supported by the machine body via a rotation shaft 17. In addition, between the lower side of the support frame 14 and the body,
A hydraulic cylinder 18 is interposed, and the screw conveyors 6 and 6, the support frames 14 and 14 and the like rotate about a rotation shaft 17 by the expansion and contraction operation of the hydraulic cylinder 18, and the front side thereof moves up and down. It is like this.

A power transmission section 19 for transmitting power by a transmission system from the engine 3 is provided at the rear ends of the support frames 14, 14, and the screw conveyor drive section 20 is provided from the power transmission section 19 via the chain transmission system. , 20 is transmitted. Screw conveyor drive unit 20, 2
The power is transmitted from 0 to the ends of the second conveyors 6c, 6c of the screw conveyors 6, 6 via the gear transmission mechanism 21. Further, the pull-out section 6a, the first transport section 6b, and the second transport section 6c of the screw conveyors 6 and 6 are configured independently of each other and can be independently replaced.

The screw conveyor drive unit 20,
The power is transmitted from 20 to the screw conveyors 6 and 6 via the gear transmission mechanism 21 so that both rotate inward. Further, in the pull-out portion 6a, the pitch of the screw is changed between the pull-out portion and the transport portion. ing.
Further, the screw conveyor 6, as shown in FIG.
It is bent with respect to the horizontal line from the pull-out portion 6a to the first transport portion 6b, and is connected by the universal joint 23 at the bent portion. Also, the support frame 1
A bent portion 25 is formed at 4. Above the guides 11 of the screw conveyors 6 and 6, slightly above the guide body 11, there is a take-in reel 22 for taking in the heading vegetables vegetated in the field.
Is rotated by the support arm 24 and the transmission case 24a,
And it is supported to move up and down. Take-in reel 2
The reference numeral 2 designates a large number of elastic bodies (hoses) 22b hung between the left and right frame bodies 22a, 22a in a basket shape. The support arm 24 and the transmission case 24a are elastically held by a spring 24b so as to be vertically movable. .

A pressing belt 26 is provided behind the take-in reel 22 in correspondence with the conveying portions of the screw conveyors 6 and 6 for pressing the conveyed headed vegetables from above. The presser belt 26 is provided on the support frames 14, 1
4 at the front and rear of the portal frame 27, 2
8 and the gate-shaped frames 27 and 28 are connected to each other by a connecting frame 29, and the rear portion of the support frame 30 is connected to the gate-shaped frame 27 by a pair of left and right link bodies 31,
It is supported by 31 so as to be movable in parallel and pivotally in the vertical and front-rear directions, and the front part of the support frame 30 is elastically supported by the pair of left and right springs 32, 32 with respect to the gate frame 28. The moving speed of the presser belt 26 and the rotating speed of the screw conveyors 6 and 6, that is, the moving speed of the headed vegetables are synchronized. The link bodies 31 and 31 are the presser belt 2
It is not limited to the rear part of 6, and may be provided in the middle part or the front part.

On the outer peripheral surface of the pressing belt 26, plate-like scraping bodies 33, 33, ... Made of a flexible member are provided at predetermined intervals. The scraping body 33 does not necessarily have to be provided. The power transmission to the pressing belt 26 is performed from the shaft end portion of the screw conveyor drive unit 20 via a flexible tube (transmission mechanism) 34. Furthermore, the power transmission to the cutting blade 12 is also performed by the flexible tube (transmission mechanism) 35 from the machine body side.
It is supposed to be done through. The pressing belt 26 can be moved up and down and back and forth within a predetermined range with respect to the screw conveyors 6 and 6, and the entire harvesting and conveying section 36 constituted by the pressing belt 26 and the screw conveyors 6 and 6 can rotate. The front side can be moved up and down by rotating around the shaft 17.

Pull-out section 6 of screw conveyors 6 and 6
A pair of left and right guide wheels 37, 37 are provided near the sides of a and 6a so as to come into contact with and follow both sides of the headed vegetable cultivation ridge and receive a reaction force for pulling out headed vegetables. This guide wheel 3
7 is a vertical adjustment mechanism 38 provided on the support frame 14.
Further, it is connected and supported via the connecting member 39, and the left and right widths can be adjusted, and it has a camber angle.
Then, as the machine runs, guide wheels 37, 37 roll on both sides of the headed vegetable cultivation ridge to automatically steer the machine, and a manipulator (turning) operation at the field edge and cutting at the work table 8 by one operator. Enable work and. Further, the vertical movement adjustment and the horizontal width adjustment of the guide wheels 37, 37 are performed according to the height and width of the heading vegetable cultivation ridge.

Behind the control unit 7 and on the side of the work table 8 is provided a step 40 on which an operator rides,
A seat 41 is provided in a part of it. Most of the harvesting work is performed by the guide wheels 37, 37 except that the operator performs a steering (steering) operation on the control unit 7 when turning at the field edge.
Touches both sides of the heading vegetable cultivation ridge and follows, and the steering operation is performed almost automatically, and the worker is
6 and the pressing belt 26, and the work of cutting the rhizome portion with a knife or the like is performed from the headed vegetables discharged from the end of the conveyance to the upper workbench 8a or the workbench 8. The cut headed vegetables are stored in the container 9 placed on the container placing section 10.
The workbench 8 may be in a state in which the upper workbench 8a is omitted as shown in FIG.

In the container mounting portion 10, two fork-shaped mounting bases are provided on the inclined frame 42 formed by a pair of left and right channel members provided in a rearward inclination of the workbench 8 on the inclined frame 42, and rollers (not shown) are provided. A lift device is connected to the hydraulic cylinder 43 via a chain and is supported so as to be able to move up and down by the expansion and contraction operation of the hydraulic cylinder 43. Then, the container 9 containing the bulb vegetables whose roots and roots have been cut is placed, and the container 9 is moved up and down according to the stored amount, and is also used for the cargo handling work of the container 9. The container 9 used here is large enough to accommodate about 200 kg of headed vegetables. Further, the container mounting portion 10 has a structure that can be housed on the side of the machine body by rotating upward from the base end portion thereof.

In the transmission 5 that receives power from the engine 3 to change gears, a hydraulic continuously variable transmission (HST) that continuously changes gears and a speed change gear are used to change the speed continuously and continuously. The power transmission is connected and disconnected via a differential device to allow the crawlers 2 and 2 to travel continuously and stepwise. A brake device is also provided in association with the differential device. Then, when the steering lever is largely operated, the side clutch, the differential mechanism, and the brake are operated to spin the aircraft.

The screw conveyors 6 and 6 and the presser belt 26 can be adjusted to change their rotation speed and movement speed steplessly and stepwise, and are combined with stepless or stepwise variable speed running of the crawlers 2 and 2. By doing so, the harvesting speed of headed vegetables can be freely set. Further, the screw conveyors 6, 6 and the presser belt 26 are in a state in which the hydraulic cylinder 18 is extended and the rotary shaft 17 is rotated about the center to raise the tip end side when traveling on the road or turning work at the end of the field. ,
It makes it easy to drive on the road and turns headlands in a small area.

The screw conveyors 6 and 6 are
As shown in FIG. 9, a power transmission unit 19 for transmitting power by a transmission system from the engine 3 is provided at the rear ends of the support frames 14 and 14, and the screw conveyor is driven from the power transmission unit 19 via the chain transmission system. The power is transmitted to the parts 20, 20, and the support frame 1 is transmitted from the screw conveyor drive parts 20, 20 via the gear transmission mechanisms 21, 21a.
The power is transmitted to the transmission shafts 14a, 14a installed in 4, 4 and the ends of the second conveyors 6c, 6c of the screw conveyors 6, 6, respectively, and the first conveyors 6b, 6b are transferred from the second conveyors 6c, 6c. The power may be transmitted from two systems so as to drive.

Next, the operation of the headed vegetable harvester 1 constructed as described above will be described. The heading vegetable harvester 1
For example, when performing a harvesting operation in a field where cabbage, which is a heading vegetable, is cultivated, the guide wheel 3 is used according to the cultivation ridge.
7, 37 are adjusted up and down by the up-down adjustment mechanism 38, and the left-right width is adjusted, the hydraulic cylinder 18 is contracted to lower the front part of the harvesting and conveying section 36, and the guide wheels 37, 37 are provided on both sides of the cultivation ridge. In the contact state, the scraping reel 22, the screw conveyors 6 and 6, and the pressing belt 26 are rotationally driven, and the crawlers 2 and 2 cause the machine body to run. Then,
The machine body is almost automatically steered by the guide wheels 37, 37 and runs, and the heading vegetables vegetated on the cultivation ridges are guided by the guide body 11
Is guided and scraped by the scraping reel 22, and the rhizomes are clamped from both sides by the pulling-out portions 6a, 6a of the screw conveyors 6, 6, which are pulled out by the outward rotation and the traveling of the machine body, and are sent backward without stagnation. To be

Since guides 11, 11 are provided at the tips of the pull-out portions 6a, 6a, headed vegetables are sucked in, and the root portions are clamped and pulled out by the rotating pull-out portions 6a, 6a. The heading vegetables pulled out by the pulling-out parts 6a, 6a are conveyed and taken over by the first conveying parts 6b, 6b, then taken over by the second conveying parts 6c, 6c, raised at a steep angle toward the rear of the machine, and conveyed. To be done. In this conveying process, the heading vegetables are pressed from above by the pressing belt 26 and move in a stable posture, and the root of the heading vegetables is cut by the cutting blade 12 during the movement.

The front end of the presser belt 26 is suspended by an upper frame 29 by a spring 32 and can be vertically moved and moved in parallel by a link body 31. Further, at a portion corresponding to the screw conveyors 6 and 6, the scraping bodies 33 and 33 are provided. Since it is scratched by ..., the posture of the headed vegetables is corrected by pressing the headed vegetables according to the size, interval, etc. of the headed vegetables, and more reliable conveyance is performed, and the root of the headed vegetables is cut at a fixed position by the cutting blade 12. . Further, since the power transmission to the pressing belt 26 is performed by the flexible tube 35, the pressing belt 26 can freely move up and down and move in parallel within a predetermined range.

Further, the harvest conveyors 36 such as the screw conveyors 6 and 6 and the pressing belt 26 are provided in the support frame 14,
Since the rear end portion of 14 is rotatable by the rotating shaft 17 and the front end side is supported by the guide wheels 37, 37, the front side of the screw conveyors 6, 6 is extremely lightly supported, and thus the floating state. With, it is possible to follow the unevenness of the field quickly and perform highly accurate harvesting work. Further, since the power transmission to the cutting blade 12 is also performed from the machine body side through the flexible tube 35, the vertical movement of the entire harvesting and transporting section 36 is smoothly performed, and stable harvesting operation is performed.

The heading vegetables discharged from the conveying end portions of the clew conveyors 6 and 6 are brought to the upper workbench 8a or the workbench 8. Then, the worker cuts the stem trunk, the lower leaves and the like from the heading vegetables with a kitchen knife or the like and processes them. The cut stem stem and lower leaves are released to the field. The cut headed vegetables are placed in the container 9 placed on the container placing section 10.
It is accommodated as if thrown into. At this time, when the amount of headed vegetables stored in the container 9 is small, the container placing part 10 is raised and lowered as the amount thereof is increased, so that damage caused when the headed vegetables are dropped or dropped can be reduced.

The container mounting portion 10 includes a hydraulic cylinder 43.
As a result, the machine is moved up and down in an oblique direction with respect to the machine body. By raising the machine body to approach the machine body side, the center of gravity of the machine body is moved toward the center of the machine body, and stable traveling performance is obtained. When the heading vegetables in the container 9 are full, the harvesting operation is interrupted once, and the front side of the harvesting and transporting section 36 is lifted by the hydraulic cylinder 18, and the machine is finished on the ridge or already harvested. After moving to the place, the container placing section 10 lowers the container 9, places a new container 9 and restarts the harvesting work. The headed vegetables in the unloaded container 9 are packaged and shipped by another operator.

Here, the headed vegetable harvester 1 has a transmission 5 on the front side of the crawlers 2 and 2, an engine 3, a control section 7 and a processing space 8 arranged substantially at the center, and a container mounting section on the rear side. By arranging 10, the front-rear and left-right balance of the machine body is improved, workability and work accuracy are improved, and the traveling property, turning performance, and stability of the machine body are improved. Further, since the crawlers 2 and 2 are configured to be spin-turnable and the transmission 5 is disposed in the central portion on the front side of the machine body, when the machine body spin-turns, it can be rotated in either left or right direction with good balance. Therefore, the soil of the field is not greatly attracted by the crawlers 2 and 2.

The spiral direction, pitch and rotation direction, and number of rotations of the pull-out section 6a, the first transfer section 6b, and the second transfer section 6c of the screw conveyors 6 and 6 of the above-described embodiment are set to a state suitable for each function. As a result, the headed vegetables will be properly extracted and transported. Further, since the pull-out section 6a and the first transfer section 6b and the second transfer section 6c are driven by separate power transmission systems, it is possible to change their respective rotation speeds, and it is possible to adjust them more appropriately. You can also perform various tasks. Furthermore, since the pull-out part 6a, the first transfer part 6b, and the second transfer part 6c are each composed of a plurality of spiral shafts, if any of them is damaged, replace only the damaged part. Good.

[0030]

As described above, the heading vegetable harvester of the present invention has the following effects. The screw conveyor is divided into multiple sets of spiral shafts,
Multiple sets of divided spiral shafts are connected in series to form a continuous conveyor, power is transmitted from the end side, and the tip side is supported by a guide body that is stuck in the soil during work. Therefore, the heading vegetables in the field can be smoothly sucked by the guide body directly in contact with the pull-out portion of the screw conveyor, and can be reliably pulled out and transported. Since the pulling-out and conveying section including the screw conveyor is composed of a holding belt arranged above the screw conveyor, a scraping reel, a guide body arranged at the tip of the screw conveyor, etc., the heading vegetables in the field are scraped. It is scraped by the reel, pressed by the presser belt, and smoothly pulled out and conveyed.

Since the guide body is composed of a guide rod having an eight-shaped expanse and a straightening plate that guides the soil into the soil and also guides the soil to the left and right sides, stones in the field are trapped. Can be almost eliminated. As for the screw conveyor, the inclination angle from the pull-out part to the transfer part is different on the left and right,
Large stones carried by the left and right screws can be tilted left and right during the transportation process and dropped from the screw conveyor. Also, small stones can be dropped through the gap between the left and right screws. Since the connecting positions of the divided spiral shafts are configured to be different between the left and right, the harvested product can move smoothly without being stagnant at the connecting positions. Since at least one of the screw conveyors is elastically supported, even if stones are caught between the left and right screws, the stones spread and the stones are dropped. In addition, the diameter of the rhizome of headed vegetables can be adjusted.

[Brief description of drawings]

FIG. 1 is a perspective view of an entire headed vegetable harvester according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view of the other embodiment.

FIG. 5 is a rear perspective view of the whole headed vegetable harvester, which is a plan view of a screw conveyor portion.

FIG. 6 is a rear view of the same portion.

FIG. 7 is a side view of a screw conveyor portion.

FIG. 8 is a plan view of the same.

FIG. 9 is a plan view of another embodiment of the screw conveyor portion.

[Explanation of symbols]

1 Heading Vegetable Harvester 2 Crawler 3 Engine 4 Hydraulic Pump 5 Transmission 6 Screw Conveyor 6a Extraction Part 6b First Transfer Section 6c Second Transfer Section 7 Control Section 8 Workbench (Processing Space) 8a Slat-shaped Upper Workbench 9 Container 10 Container mounting part (lifting device) 11 Guide body 11a Guide rod 11b Straightening plate 12 Cutting blade 13 Extraction / conveyance spiral body 14 Support frame 15 Moving shaft 15a Spring 16 Rotating support member 17 Rotating shaft 18,43 Hydraulic cylinder 19 Power transmission Part 20 Screw conveyor drive part 21 Gear transmission mechanism 22 Scraping reel 22a Frame body 22b Elastic body 23 Universal joint 24 Support arm 24a Transmission case 24b Spring 25 Bending part 26 Holding belt 26a Support frame 27, 28 Gate type frame 2 Connecting frame 30 supporting frame 31 link member 32 spring 33 take-member 34, 35 flexible tube (transmission mechanism) 36 harvest transport portion 37 guide wheel 38 up and down adjustment mechanism 39 interlocking member 40 steps 41 seat 42 inclined frame

Claims (6)

[Claims] 1. A pair of left and right that transports toward the rear of the machine body while advancing the machine body while rotating while holding the rhizomes of the heading vegetables vegetated in the field from the left and right sides of the machine body front part. In a headed vegetable harvester provided with a screw conveyor, the screw conveyor is divided into a plurality of sets of spiral shafts,
Multiple sets of divided spiral shafts are connected in series to form a continuous conveyor, power is transmitted from the end side, and the tip side is supported by a guide body that is stuck in the soil during work. A headed vegetable harvester characterized by being used. 2. The pulling and conveying section including the screw conveyor is constituted by a holding belt arranged above the screw conveyor, a take-up reel, a guide body arranged at the tip of the screw conveyor, and the like. The headed vegetable harvesting machine according to claim 1. 3. The guide body comprises a guide rod having an eight-shaped expanse and a current plate for guiding the soil into the soil and guiding the soil to the left and right sides. Item 1. A headed vegetable harvester according to item 1 or 2. 4. The headed vegetable harvester according to claim 1, 2 or 3, wherein the screw conveyor has different left and right inclination angles from the pull-out portion to the conveying portion. 5. The headed vegetable harvester according to claim 1, wherein the connection positions of the divided spiral shafts are different between the left and right ones. 6. The headed vegetable harvester according to claim 1, 2, 3, 4, or 5, wherein at least one of the screw conveyors is elastically supported.