JPH10210831A - Harvesting part for roguing and harvesting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mechanize processes after roguing of carrots before the post treatment of foliage part cutting or the like. SOLUTION: A pair of left and right clamping belts 11 are oppositely arranged right behind a soil cutting blade 4 for cutting and softening soil at a carrot side part, the start end part of a roguing and carrying device 11 for clamping a foliage part and carrying the carrot to a rear upper part while pulling it out from a field is arranged and a positioning and carrying mechanism 21 for contacting and acting the head part of the carried carrot, dragging it down and extending the foliage part is provided on the lower side of the front and back intermediate part of the roguing and carrying device 11. For the foliage part clamping force of the pair of the clamping belts 11, the one at the intermediate part of the roguing and carrying device 11 is set smaller than the one at the other parts, and when more than prescribed downward moving force by the positioning and carrying mechanism 21 acts, the foliage part is slipped through downwards from the pair of the clamping belts 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for mechanizing a series of harvesting operations from rooting of root vegetables such as carrots and radishes to underground transportation and post-processing. is there.

[0002]

2. Description of the Related Art Conventionally, root crops have been harvested by a manual operation in which root vegetables buried in a field are extracted one by one by hand and then the leaves are cut off with a kitchen knife.

[0003]

The artificial harvesting of root crops involves heavy labor of pulling the root crops out of the field in a bent posture. Therefore, it is desired to realize a mechanized harvester such as a combine. Was. This is a pressing issue for large-scale fields. The present invention realizes and provides a root vegetable harvesting machine in which a series of steps from the extraction of root vegetables to the stage before leaf cutting is mechanized.

[0004]

In order to achieve the above object, according to the present invention, a leaf portion of a root vegetable is sandwiched between a pair of left and right front endless rotating belts which are driven to face each other while being inclined rearward and upward. And a pair of left and right rear endless rotating belts and a pair of left and right alignment transport mechanisms disposed below the pulling unit for pulling the root vegetables upward while pulling the root vegetables from the ground. And a transport device for transporting the root vegetables sent from the pull-out portion rearward by nipping and transporting the upper portion of the leaf portion by driving the pair of rear endless rotating bands while guiding and guiding between the alignment transport mechanisms. Provided, respectively, the vertical interval between the pair of rear endless rotating bands and the pair of alignment transport mechanisms,
These rear endless rotating belts and the alignment conveyance mechanism are relatively arranged so as to be wider toward the lower side in the conveyance direction, and
When a predetermined or more downward moving force acts on the transported root vegetables, the leaf holding force is set by a pair of rear endless rotating bands so that the downward movement from the rear endless rotating bands of the root vegetables is allowed. A guide means for maintaining the vertical distance between the main body upper surface of the root vegetable conveyed by the endless rotating belt and the front part thereof at a predetermined value or more in the drawing part, and the guide means acts on the transport root vegetable. An intermediate portion of the front endless rotating band pair in which the leaf portion pinching force is set so that the root vegetable can be shifted downward from the endless rotating band pair by a predetermined downward moving force, and a pair of left and right acting on the upper surface of the root vegetable body. The guide member is arranged in such a manner that the vertical interval between the end member and the endless rotating band pair increases toward the rear, and the pinching force of the endless rotating band pair on the root vegetable stem is determined by the endless rotating band pair. The middle part, the rear part, and the front part It is characterized constitute a.

[0005]

In the above-mentioned characteristic configuration, the pull-out portion functions to pull out the root vegetables in the ground and lift it upward by sandwiching the leaf portion protruding above the ground, and the transfer device includes a pair of alignment transfer mechanisms. Thus, in a state in which the transport path at the lower portion of the leaf portion is formed, a function of providing a transport action by nipping the upper portion of the leaf portion by the pair of rear endless rotating bands is exhibited. In the transport device, the vertical interval between the alignment transport mechanism and the rear endless rotating band is increased such that the lower the distance in the transport direction, the wider the vertical interval.
The lower endless rotating belt allows the root vegetables to move downward, so the transport mechanism moves closer to the root of the leaf as it is transported backward, and finally transports it in contact with the top of the root vegetable body After that, the pair of rear endless rotating belts and the leaves are moved up and down relative to each other to maintain the contact conveyance state. as a result,
At the end of the transport device, all root vegetables are unified into a contact transport state, so that the root vegetables can be delivered to a post-processing step such as a cutter device for cutting leaves with a fixed posture and position.

By the way, the vertical interval between the start end of the alignment transfer mechanism and the rear endless rotating belt does not become zero, and a certain vertical interval occurs due to the mechanical dimensions. If the root-container main body upper surface has already come into contact with the front endless rotating band in the contact conveyance state, there is a possibility that the root vegetable main body may bite between the alignment conveyance mechanism and the rear endless rotating band. Therefore, in the present application, since the guide means for maintaining the vertical distance between the upper surface of the root vegetable main body and the front endless rotating belt at a predetermined value or more is provided, the rear endless rotating belt is transferred to the alignment transport mechanism. There is a predetermined vertical interval between the top and the root vegetable main body, and the paper is transferred to the alignment transport mechanism without biting between the start end of the alignment transport mechanism and the rear endless rotating band.

[0007] Then, the pinch force of the leaf stem portion of the pair of endless rotating bands is
The middle part, the rear part, and the front part are strengthened in this order, so that the root part is reliably pulled out by the strong pinching force in the front part, and the root part can be displaced downward by the weak clamping force in the middle part. To the position below the endless rotation band by a predetermined distance, and in the rear part set to the clamping force set between the front part and the middle part, the root vegetables are overcome by overcoming the clamping force of the positioning mechanism. And the downward movement of the leaf stem after the contact conveyance state is attained. In other words, the pinching force sufficient for the leaf stem pinching action at each part in the endless rotating band pair is set without wasting the unnecessary setting of the pinching force.

[0008]

Accordingly, a series of processes from the extraction of the root vegetables from underground to before the post-processing of the cutter device and the like can be performed smoothly without unnecessary clamping force in the endless rotary belt for pulling and conveying. In addition, the machine can be machined without the risk of biting at the start of the alignment transport mechanism, and by aligning the root vegetables delivered to the post-processing to a certain posture and position, the mechanization process can be smoothed and stabilized, contributing to improved harvesting efficiency. I was able to provide what I could do.

[0009]

1 and 2 show a root vegetable harvesting machine for carrots, wherein A is a drawing section, B is a conveying device, 8 is a leaf cutting device, 9
Is a collecting unit, 10 is a foliage transporting device, 12 is a container loading unit, 13 is a control unit, 20 is a crawler traveling device, which picks up ginseng from a field by pulling out ginseng at a pulling-out unit A, and a transporting device B The ginseng body is aligned in a predetermined posture while handling the leaves upward, and then the leaves are cut by the leaf cutting device 8. The cut leaves are discharged forward of the fuselage by the foliage transfer device 10, and the ginseng body recovered by the recovery unit 9 is mounted on a container 9b.
When the container is full, it is replaced with an empty container 9b in the container loading unit 12. A dozer device 28 capable of swinging adjustment at a vertical fulcrum X is attached to the front part of the fuselage, and while traveling while filling the grooves between the ridges, one crawler traveling device 20 fits into the ridge grooves and moves left and right. Inclination can be avoided as much as possible.

A pull-out portion A is a pair of left and right drive-rotatable holding / conveying belts 11, 11 for holding the foliage of the carrot planted in the field, pulling it obliquely upward at the rear of the fuselage, and carrying it suspended. It comprises a weeding implement 3 and a partitioning blade 4 for facilitating the removal of carrots. As will be described later in detail, since the ginseng is pulled out from the underground at the pull-out portion A, a strong pinching force is generated.

The conveying device B includes the above-described nipping and conveying belt 1
1, 11 and a pair of left and right alignment transport mechanisms 2 and 2 arranged below the leaf stems, while guiding the lower part of the leaf stem between the pair of alignment transport mechanisms 2 and 2, Is transported by the sandwiching and conveying belts 11, 11, so that the root vegetables sent from the extraction unit A are transported backward. At this time, the nipping and conveying belts 11 and 11 and the pair of alignment conveyance mechanisms 2 and 2 are arranged at a relative angle so that the vertical distance between them becomes wider toward the lower side in the conveyance direction.

The leaf cutting device 8 comprises a pair of left and right rotary cutters 7, 7, and is arranged behind the alignment and transport mechanism 2. A re-holding and conveying device 6 comprising a pair of left and right drivable nipping and conveying belts and the like for re-gripping the ginseng leaf portion suspended by the conveying device B at a position above the pinching position and transferring it to the leaf cutting device 8. Is provided. As shown in FIG. 3, the roller 16 is attached to the holders 15 attached to the left and right rotating chains 14 in a state where the rollers 16 are biased in the approaching direction by the springs 17.
Is set so as to be rotated by the movement of the foliage in the longitudinal direction, and the ginseng is configured to rise until the ginseng comes into contact with the rollers 16 with the lifting by the transport device B.

A collecting section 9 for collecting root vegetables from the leaf cutting device 8 is provided behind the drawing portion A and below the leaf cutting device 8,
In order to form the collecting section 9, a small-sized root vegetable is dropped into the lower container 9a, and a large-sized root vegetable is stored in the harvested root vegetable storage container 9b at the root vegetable receiving position in the rear corner of the fuselage.
Conveyor 9c for obliquely transporting to the left and leaf cutting device 8
A chute 9d for guiding root vegetables falling from the conveyor to the sorting conveyor 9c is provided, and a container accommodating space 18 is provided below a horizontal transport section 9e formed at the rear of the sorting conveyor 9c.

Further, a roller conveyor 19 which is freely rotatable is provided between the root vegetable receiving position and the container accommodating space 18, and the container 9b at the root vegetable receiving position is placed on the roller conveyor 19 and easily moved forward. The container 9 is sent into the container storage space 6 and the container 9b in the container storage space 18 can be dragged laterally and moved to the container loading section 12. That is,
When the container 9b at the root vegetable receiving position is full of harvested root vegetables, the container 9b is moved forward with the container 9b placed on the roller conveyor 19 and the empty containers connected to the rear, so that the container accommodation space 18 At the same time, the empty container is set at the root vegetable receiving position, so that the container can be easily replaced and the root vegetable from the sorting conveyor 9c can be executed without spilling.

The foliage transport device 10 includes a leaf cutting device 8.
It is composed of a drivable transport chain 10a for discharging the cut foliage from the outside of the machine body, a holding rail 10b, and the like,
The cutting foliage is provided in front of the control section 13 in a state of being released.

As shown in FIG. 4 and FIG.
The top of the carrot body conveyed by this and the nipping and conveying belt 1
Guide means C is provided for keeping the vertical distance from the first and the first direction 11 to a predetermined value or more. That is, the guide unit C includes the nipping and conveying belts 11, 11, the first guide mechanism 21, and the second guide mechanism 22 located on the lower side in the root vegetable transport direction with respect to the first guide mechanism 21. The first guide mechanism 21 is provided by a pair of left and right first guide members 23, 23 in which the vertical distance from the nipping and conveying belt 11 increases toward the rear, and
A pair of left and right second guide members 24, 24, each of which has a wider vertical space with respect to the nipping and conveying belt 11 toward the rear, constitute the second guide mechanism 22, respectively.
The width D ₁ of the root vegetable leaves between the three second guide members 2
Root vegetables leaf between 4,24 passage is set larger than the width D _2.

The first and second guide members 23 and 24 are formed by spring wires of a cantilever shape facing backward fixed to the pull-out frame 1f.
₁ and L ₂ are set such that L ₁ = L ₂ . Accordingly, as shown in FIG. 4, the large ginseng is pushed down by the first guide mechanism 21, and the small ginseng is pushed down by the second guide mechanism 22 after passing through the first guide mechanism 21. It is transferred to the alignment transport mechanism 2.

The pinch force of the leaf stem by the pair of nipping and conveying belts 11 is strong for pulling out the front part, moderately strong for the appearance of the contact conveying state at the rear part, and at the middle part for the downward displacement by the guide means C. In other words, the leaf stem clamping force is increased in the order of the middle part, the rear part, and the front part.
As shown in FIG. 6, the specific means is such that a plurality of fixedly positioned rolling wheels 25 are arranged at the front portion so as to oppose the left and right sides, and the front and rear spaces are narrowed. Are arranged alternately and sparsely with a sufficiently large front-rear interval, and a movable rolling wheel 27 and a fixed rolling wheel 25, which are protruded and urged by a helical spring 26 at the rear, are disposed to face left and right. Are arranged at appropriate intervals before and after.

The structure for supporting the rolling wheels will be described at the rear of the nipping and conveying belt. As shown in FIG. 3, a fixed rolling wheel 25 and a movable rolling wheel 27 for pressing the left and right nipping and conveying belts 11 in the approaching direction are shown, and the fixed rolling wheel 25 is supported by a fixed holder 1h. The movable rolling wheel 27 slidably attaches to the frame 1f in a state where the holder 1h for supporting the movable rolling wheel 27 is urged by the spring 26, so that an elastic pressing force appears.

[Another Embodiment] The setting of the holding force of the holding / conveying belt 11 is performed by using a movable rolling wheel whose front portion is strongly biased by a spring, or by biasing a guide rod along the back surface of the belt. Various modifications are possible.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a root vegetable harvester.

FIG. 2 is an overall side view of a root vegetable harvester.

FIG. 3 is a view taken in the direction of arrows aa in FIG. 2;

FIG. 4 is a side view showing the structure of the guide means.

FIG. 5 is a bottom view showing the structure of the guide means.

FIG. 6 is a plan view showing a pressing structure of the nipping and conveying belt.

[Explanation of symbols]

 2 Positioning and Conveying Device 11 Endless Rotating Band 23 Guide Member A Pull-Out Part B Conveying Device C Guide Means

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[Procedure amendment]

[Submission date] March 26, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Harvester of sampling harvester

[Claims]

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 pretreatment section in a step of extracting root crops such as ginseng and radish from a field, and a transport step for a post-treatment step.

[0002]

2. Description of the Related Art Conventionally, crop harvesting work has been performed by manually extracting crops growing in a field one by one and then cutting off the leaves with a kitchen knife.

[0003]

Since the artificial harvesting of the crop is a heavy labor of pulling the crop out of the field in a bent posture, it has been desired to realize a mechanized harvester such as a combine. . This is a pressing issue for large-scale fields. SUMMARY OF THE INVENTION The present invention provides a crop harvester in which the steps of a part that extracts and transports a crop requiring labor are mechanized.

[0004]

According to a first aspect of the present invention for achieving the above object, a cutting edge for cutting and softening soil near a crop is provided at a front end of an airframe, and a crop cutting edge is provided behind the cutting edge. The starting end of the pulling and conveying device that holds the foliage portion and pulls up from the field while pulling it up is arranged, and the pulling and conveying device is composed of a pair of left and right endless rotating bands that are driven to face each other while being inclined rearward and upward. In addition, below the middle part in the front-rear direction of the pull-out transport device, the starting end of a positioning transport mechanism that drags down the crop transported by the pull-out transport device and extends the foliage is located and provided, and a pair of endless rotating belts is provided. The foliage holding force by the pulling and conveying device is set to be smaller in the front-rear middle part than in the other portions, and when a downward moving force of a predetermined or more by the positioning and conveying mechanism acts on the crop to be conveyed. Wherein configuration that foliage of crops from endless rotation belt pairs are configured so as to be slipped downwardly.

According to a second aspect of the present invention, in the first aspect, each endless rotating band is provided with a rolling wheel for guiding and supporting the pair of endless rotating bands in a state of being opposed to each other. Is characterized in that the rolling wheels of the right endless rotating band and the rolling wheels of the left endless rotating band are alternately arranged such that they are displaced back and forth with respect to each other.

[0006]

According to the first aspect of the present invention, the soil near the crop is cut and softened by the cutting blade so as to be pretreated so as to be easily extracted, and then the foliage extending in the field scene is separated by the extraction and transfer device into a pair. The crop in the field is nipped by the endless rotating belt, pulled out, lifted up and transported. That is, due to the soil softening function of the cutting blade, the driving force of the pulling and conveying device for pulling out the crop does not need to be very strong, and the pulling out can be performed without damage to the foliage such as tearing.

[0007] A positioning / conveying mechanism is provided to extend the foliage by dragging the crop conveyed by the pulling / conveying apparatus, and vertically separates the position where the leaf is sandwiched by the pair of endless rotating bands and the main body of the crop. The post-processing step can be easily performed by, for example, securing a gap into which the cutter blade enters in the leaf cutting device.

However, if the soil is broken and pulled out, the soil around the crop may remain attached to the foliage of the crop, which may hinder the cutting of the foliage and extend the life of the cutter blade. May shrink. Therefore, as described above, by pulling down the crop and extending the foliage, the soil attached to the foliage can be handled in advance, and the soil attached to the crop body can be shaken off by the vibration caused by the dragging down. Become.

The pinch force of the foliage by the pair of endless rotating belts is set to be smaller in the middle portion in the front-rear direction of the pulling and conveying device than in other portions. When a downward moving force greater than a predetermined value is applied, the foliage of the crop can pass downward from the pair of endless rotating bands, so that the foliage is cut off in the middle or the endless rotating band is lowered. The crop can be reliably pulled down from the pull-out transport device without any trouble such as detachment, and the action of pulling the crop from the field at the front of the pull-out transport device requiring a strong pulling force can be ensured. In addition, it is possible to reliably carry out the transfer operation by pinching the foliage in the rear part of the pulling-out transfer device.

According to the second aspect of the present invention, a rolling wheel provided in each endless rotating band for guiding and supporting the pair of endless rotating bands in an opposed arrangement state is provided at an intermediate portion in the front-rear direction of the pulling and conveying apparatus. Since the right rolling wheel and the left rolling wheel are arranged in a staggered manner displaced back and forth with respect to each other, the foliage nipped and conveyed by the endless rotating belt is left at the right rolling wheel site, and In the rolling wheel portion on the left side, each of them is swung to the right, and the detaching action and the dropping action of the attached soil from the crop are promoted.

[0011]

As a result, even in the sampling and harvesting machine according to the first and second aspects, the step of transporting the crop from the field to the stage before the post-processing is performed by the reliable pulling and transporting operation of the crop by the pulling and transporting device. In addition to the effective operation of the positioning and transport mechanism to release the adhered mud from the crop and its foliage, the mechanization was possible, and the mechanization process at the harvesting unit was smoothed and stabilized, contributing to improved harvesting efficiency. I got it.

According to a second aspect of the present invention, there is provided an extractor / harvester for reducing the holding force of the foliage by a pair of endless swiveling bands for realizing the action of dragging and lowering the crop by the positioning / conveying mechanism, ie, alternately arranging the left and right rolling wheels. As a result, the action of shaving off the mud, which has become easy to adhere to the crop by the action of the cutting blade, is promoted, and there is no inconvenience such as cutting of foliage and clogging in the post-processing step, thereby improving the crop quality. There is.

[0013]

1 and 2 show a ginseng harvester which is an example of a sampling and harvesting machine, wherein A is a pull-out section, B is a transport section, 8 is a leaf cutting device, 9 is a recovery section, and 10 is a foliage transport section. The device, 12 is a container loading unit, 13 is a control unit, 20 is a crawler traveling device, which picks up ginseng from the field by holding the foliage at the pulling-out unit A, and treats the ginseng body while handling the foliage at the transport unit B upward. Is adjusted to a predetermined posture, and the foliage is cut by the leaf cutting device 8.
The cut foliage is discharged to the front of the fuselage by the foliage transfer device 10, and the ginseng body recovered by the recovery unit 9 is a container 9b.
When the container is full, it is replaced with an empty container 9b of the container loading unit 12.

A dozer device 28 capable of swing adjustment at a vertical fulcrum X is attached to the front of the fuselage.
Is prevented from fitting into the ridge groove and tilting left and right as much as possible.

The pull-out section A includes a pair of left and right drive-rotatable holding / conveying belts 11, 11 for holding the foliage of the carrot planted in the field, pulling it obliquely upward at the rear of the fuselage, and carrying it suspended. A pulling and conveying device 11 (for convenience, the same reference numeral as that of the nipping and conveying belt) is used,
It is provided with a partitioning blade 4 for facilitating the removal of ginseng. As will be described in detail later, the endless rotating belt 1
The foliage pinching force by 1, 1 is set to be smaller at the middle part in the front-rear direction of the pulling and conveying apparatus 11 than at the other parts. At the pulling part A, ginseng is pulled out from the field, so that it is strong. A pinching force is generated.

The transport section B is provided with the above-described nipping transport belt 1
1, 11 and a pair of right and left rotating chains 14, 14 disposed below the pair of right and left rotating chains 14, 14 to oppose each other. By nipping and transporting the upper part of the foliage by the nipping and conveying belts 11 while guiding and guiding between the two,
The ginseng sent from the drawing unit A is transported backward. At this time, the nipping / conveying belts 11 and 11 are arranged at a relative angle so that the vertical distance between the positioning / conveying mechanism 2 and the conveying mechanism 2 becomes wider toward the lower side in the conveying direction.

The leaf cutting device 8 comprises a pair of left and right rotary cutters 7, 7, and is arranged behind the alignment and transport mechanism 2. A re-holding and conveying device 6 comprising a pair of left and right drivable nipping and conveying belts and the like for re-gripping the foliage portion of the carrot hung by the conveying portion B at a position above the nipping position and transferring it to the leaf cutting device 8. Is provided.

As shown in FIG. 3, the roller 16 is attached to each of the holders 15 attached to the left and right rotating chains 14, 14 in a state where the roller 16 is biased in the approaching direction by a spring 17, and The support shaft 16 is set so as to rotate by the movement of the foliage in the longitudinal direction, so that the ginseng is raised until the ginseng comes into contact with the roller 16 in accordance with the pulling-back transport by the pull-out transport device 11. .

A collecting unit 9 for collecting crops from the leaf cutting device 8 is provided below the leaf cutting device 8 behind the drawing unit A. To form the collecting unit 9, a ginseng having a small diameter is placed in a lower container. 9g, a sorting conveyor 9c for obliquely transporting a large-diameter one to a carrot storage container 9b at a ginseng receiving position at the rear corner of the fuselage, and a chute for guiding ginseng falling from the leaf cutting device 8 to the sorting conveyor 9c. 9d, and a horizontal transport section 9e formed at the rear of the sorting conveyor 9c.
A container accommodation space 18 is provided below the container.

Further, a roller conveyor 19 which can freely rotate is provided between the ginseng receiving position and the container accommodating space 18.
Roller conveyor 19 puts container 9b at the carrot receiving position
The container 9b in the container storage space 18 is moved to the container storage space 6 by being easily moved forward and sent to the container storage space 6.
Can be dragged in the lateral direction and moved to the container loading section 12.

That is, the container 9b at the carrot receiving position
When the container 9b is full of harvest ginseng, the container 9b is moved forward with the container 9b placed on the roller conveyor 19 and an empty container connected to the rear, and the container accommodating space 1 is moved.
8 and at the same time, the empty container is set at the ginseng receiving position, so that the container can be easily replaced and the ginseng from the sorting conveyor 9c can be executed.

The foliage transport device 10 includes a leaf cutting device 8.
It is composed of a drivable transport chain 10a for discharging the cut foliage from the outside of the machine body, a holding rail 10b, and the like,
The cutting foliage is provided in front of the control section 13 in a state of being released.

As shown in FIGS. 4 and 5, the upper surface of the main body of the ginseng conveyed by this and the nipping and conveying belt 11,
Guide means C is provided for keeping the vertical distance from the reference numeral 11 at or above a predetermined value. That is, the guide means C includes the nipping and conveying belts 11, 11, the first guide mechanism 21, and the second guide mechanism 22 located on the lower side in the crop conveyance direction than the first guide mechanism 21.

The first guide mechanism 21 is a pair of left and right first guide members 23, 23 in which the vertical distance from the nipping / conveying belt 11 increases toward the rear, and the second guiding mechanism 22 includes the nipping / conveying belt 11 toward the rear. Are formed by a pair of left and right second guide members 24, 24 in which the up-down distance is widened. Then, the crop foliage bandpass D ₁ of the between the left and right of the first guide member 23, 23, is set wider than the crop foliage bandpass D ₂ between the right and left of the second guide member 24, 24.

The first and second guide members 23 and 24 are formed by spring wires having a cantilever shape facing backward and fixed to the pull-out frame 1f.
₁ and L ₂ are set such that L ₁ = L ₂ . Accordingly, as shown in FIG. 4, the large ginseng is pushed down by the first guide mechanism 21, and the small ginseng is pushed down by the second guide mechanism 22 after passing through the first guide mechanism 21. It is transferred to the alignment transport mechanism 2.

The pinching force of the foliage portion by the pair of nipping and conveying belts 11 and 11 is moderately strong within a range in which the foliage portion can pass through, so that the front portion is strong for pulling out and the rear portion is in a contact conveying state. The middle portion is weak so that the ginseng can be surely moved downward by the guide means C through the foliage, that is, the foliage pinching force is increased in the order of the middle portion, the rear portion, and the front portion. .

As shown in FIG. 6, a plurality of rolling wheels 25 having a fixed position are provided at the front portion so as to be opposed to each other in the left and right direction. The rolling wheels 25 are alternately arranged on the left and right sides, and are arranged sparsely with a sufficiently large front-rear spacing. At the rear, a movable rolling wheel 27 and a fixed rolling wheel 25 which are protruded and urged by a winding spring 26 are provided.
Are arranged at appropriate intervals in the front and rear direction.

The support structure for the rolling wheels will be described at the rear of the nipping and conveying belt. As shown in FIG. 3, a fixed rolling wheel 25 and a movable rolling wheel 27 for pressing the left and right nipping and conveying belts 11 in the approaching direction are shown, and the fixed rolling wheel 25 is supported by a fixed holder 1h. The movable rolling wheel 27 slidably attaches to the frame 1f in a state where the holder 1h for supporting the movable rolling wheel 27 is urged by the spring 26, so that an elastic pressing force appears.

The first and second guide mechanisms 21 and 22 are
It also functions as a positioning transport mechanism 21 or 22 that drags down the ginseng transported by the pull-out transport device 11 to extend the foliage. That is, as described above,
In the portion corresponding to each of the guide members 23 and 24 in the pull-out conveyance device 11, the nipping force of the pair of nipping and conveying belts 11 is set to such an extent that the foliage can be dragged down.

The guide members 23 and 24 exert a downward force on the upper surface of the ginseng body to drag the ginseng downward and extend the foliage, so that it is possible to exhibit the function of removing the soil attached to the foliage and to remove the soil. Due to the vibration caused by dragging down and the vibration due to the left and right staggered arrangement of the rolling wheel 25 having the fixed position, the soil attached to the ginseng body can be shaken off.

That is, the foliage is composed of left and right holding belts 11.
Since the pair is clamped, each clamping belt 1
1 is slightly swelled outward and displaced. Therefore, when the rolling wheel 25 exists only on one of the left and right sides, the outwardly bulging transition portion of the sandwiching belt 11 on the side where the rolling wheel 25 exists is moved toward the center in the left-right direction, and the foliage is opposite to the rolling wheel existing side. You will be shaken to the side. And rolling wheel 25
Since the ginsengs are arranged alternately on the left and right, the direction in which the ginseng is swung alternately appears on the left and right, the swing width is amplified, and the effect of shaking off the mud can be expected to be enhanced.

[Another Embodiment] The setting of the holding force of the holding / conveying belt 11 is performed by using a movable rolling wheel whose front portion is also strongly biased by a spring, or by biasing a guide bar along the back surface of the belt with a spring. Various modifications are possible.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a sampling machine.

FIG. 2 is an overall side view of a sampling machine.

FIG. 3 is a view taken in the direction of arrows aa in FIG. 2;

FIG. 4 is a side view showing the structure of a positioning and conveying mechanism.

FIG. 5 is a bottom view showing the structure of the positioning and conveying mechanism.

FIG. 6 is a plan view showing a pressing structure of the nipping and conveying belt.

[Explanation of Signs] 4 Earth-cutting blade 11 Pull-out transport device 11 Nipping transport belt 21 Positioning transport mechanism 25 Rolling wheel

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaaki Suetsuru 64 Ishizukita-cho, Sakai City, Osaka Inside Kubota Sakai Plant

Claims (2)

[Claims] 1. A cutting blade for cutting and softening soil near a crop is provided at a front end of an airframe, and a rear side of the cutting blade is sandwiched between foliage of a crop and pulled upward from a field while pulling the crop from a field. A starting end portion of the pull-out transport device to be pulled up is arranged, and the pull-out transport device is constituted by a pair of left and right endless rotating belts that are driven to be opposed to each other in an upwardly inclined state, and an intermediate portion in the front-rear direction in the pull-out transport device. On the lower side, the starting end of a positioning and transport mechanism that drags and lowers the crop conveyed by the pull-out conveying device to extend the foliage is provided, and the foliage pinching force by the pair of endless rotating bands is provided. When the middle part in the front-rear direction of the pull-out conveyance device is set to be smaller than that in other parts, and when a downward moving force of a predetermined or more by the positioning conveyance mechanism acts on the crop to be conveyed, the endless Harvest of the harvester sampling the foliage of the crop from the dynamic band pairs are configured so as to be slipped downwardly. 2. Each of the endless rotating bands is provided with a rolling wheel for guiding and supporting the pair of endless rotating bands in a state of being opposed to each other. The harvesting unit according to claim 1, wherein the rolling wheels of the endless rotating band and the rolling wheels of the endless rotating band on the left side are alternately arranged so that they are displaced back and forth.