JPH1118535A - Harvesting of bulbous crop - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bulbous crop-harvesting machine capable of smoothly delivering bulbous crops, capable of improving the efficiency of the crop- harvesting work and useful for harvesting onions, etc., by disposing the receiving-starting portion of a neck portion-nipping and carrying device at a place near to the pulling-starting portion of a leaf portion-nipping and carrying device. SOLUTION: In this machine for harvesting bulbous crops, a leaf portion- nipping and carrying device 6 comprises a pair of right and left carrying belts 32A, 32B, and is disposed in a rearward inclined posture directed from the front pulling-starting portion to the carrying rear portion, and a neck portion- nipping and carrying device 7 comprises a pair of right and left carrying belts 34A, 34B, and is disposed in an approximately horizontally extended posture directed from the front receiving-starting portion to the carrying rear portion. The receiving-starting portion of the neck portion-nipping and carrying device 7 is disposed at a place near to the pulling-starting portion of the leaf portion- nipping and carrying device 6. A leaf portion-raking device 5 is preferably disposed on the front side of the leaf portion-nipping and carrying device 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a bulb crop harvester. Here, bulb crops are onions, garlic,
Ginger, lily, and the like are referred to as crops in the following description because they can be applied to root crops such as carrots.

[0002]

2. Description of the Related Art A harvester in which a leaf is cut when a crop is transferred to a neck holding and transferring device from a leaf holding and transferring device for extracting crops vegetated in a field and conveyed backward is disclosed in Japanese Unexamined Patent Application Publication No. Hei 9-1997. No. 84427, JP-A-9-8442
No. 8, for example. This conventional harvester is of a walking type, and is provided with a weeding device, a scraping device, a leaf holding and transferring device, a neck holding and transferring device, a leaf cutting device, an alignment device, and the like from the front thereof, The leaves of the crops vegetated in the field are weeded by a weeding device, raked by a scraping device, and then transported backward while being clamped by the leaf clamping and transferring device, thereby pulling out the neck while transferring the neck. The leaf is cut by a cutting device in a state where the neck is sandwiched by the cutting device,
Thereafter, the bulbs (balls) were dropped and supplied in a state where they were arranged in a field, and the crops in this field were bound and harvested in a later step.

[0003]

This kind of crop is usually planted in four rows in a field (row), and the harvesting operation is performed in such a manner that two rows are harvested in a forward trip and two remaining rows are harvested in a return trip. General. In addition, this kind of crop has a special vegetation form, its leaves are intricately intertwined, and since it is a four-row plant, its intertwining is increasingly complicated. It needs to be easy.

[0004] In the prior art, a weeding frame is fixed in front-to-low and back-to-back directions, a plurality of tines project from the weeding frame, and a fixed weeding board projects forward from the weeding frame. In this case, it is difficult to form the weeds of the leaves that are intricately intertwined with each other, and there is a first problem that if the crops are pulled out during this weeding, the crops in subsequent crops will be damaged.

[0005] As a second problem, in the prior art, the starting portion of the leaf-holding / transporting device is arranged between the belts of the raking device so as to be inserted, and at the same time, between the belts of the leaf-holding / transporting device. Because the transfer part of the neck clamping transfer device was arranged in a penetrating manner, the transfer to the subsequent work part was uncertain in any case, and the crop yield rate dropped due to dropping or stopping during transportation and the crop yield rate decreased The pain was severe.

[0006] In particular, the leaves of the crops are long and short,
There was a second problem that the succession to subsequent work was inaccurate because some of the leaves were dead. Further, as a third problem, in the prior art, the leaf pinching / transporting device has a fixed and invariable clamping force (tension) in the entire transport direction, so that the positioning of the neck by the leaf pinching / transporting device becomes inaccurate. In addition, there is a third problem that not only the cutting length becomes irregular, but also a cutting error is caused, and the crop falls during transportation.

[0007] As a fourth problem, in the prior art, the configuration of the aligning and transporting device is complicated, and there is a strong possibility that the crop is damaged during the aligning and transporting, and the alignment state (posture) is also irregular. I tended to be. An object of the present invention is to solve the second problem among the above-mentioned problems.

[0008] Of the above-mentioned problems, the solutions to the first, third, and fourth problems and other problems will be described as necessary in the section of the embodiment of the invention.

[0009]

SUMMARY OF THE INVENTION The present invention is directed to a bulb crop harvesting machine which inherits a bulb portion from a leaf clamping and transferring device for extracting a bulb crop and transfers the bulb portion to a rear portion thereof for harvesting. In order to achieve this, the following technical measures have been taken. That is, the leaf nipping and transferring apparatus according to the present invention is configured by a pair of left and right transfer belts, and is disposed so as to incline rearward and upward from the front drawing start portion toward the rear in the transfer direction. Is composed of a pair of left and right transfer belts, and is disposed so as to extend substantially horizontally toward the rear in the transfer direction from the front inheritance start portion, and near the pullout start portion in the leaf nipping transfer device, The inheritance start portion of the neck clamping transfer device is characterized in that it is disposed in close proximity.By adopting such a configuration, the working range of the inheritance start portion, that is, the pulley diameter can be increased. As a result, the middle of the leaf lifted by the leaf clamping and transferring device can be reliably introduced into the inheritance start site (claim 1).

Further, in the present invention, in addition to the configuration of the above-mentioned claim 1, a leaf scraping device is disposed in front of the leaf nipping and transporting device, and the leaf scraping device includes a pair of right and left leaves. The circulating revolving body is provided with a protruding claw protruding at predetermined intervals in the revolving direction, and the leaf raking device is configured as follows:
The backward ascending slope is larger than the backward ascending slope of the nipping and transporting device, and the pulling start portion of the leaf nipping and transporting device is close to the vicinity of the front scraping start portion of the leaf scraping device. By adopting such a configuration, the working range of the raking claw can be widened, and even if it is a long or short leaf part, the raking can be reliably performed while scooping up. As a result, the transfer to the leaf holding and transferring device was improved (claim 2).

[0011] Further, in the present invention, the scraping nail of the leaf scraping device is characterized in that the tip of the scraping nail is located near the neck of the bulbous crop at the site where the scraping is started. By adopting such a configuration, when scraping the leaves of the crop vegetated in the field, it is possible to prevent the neck portion from being hurt by the scraping claws and to prevent the crop from being withdrawn unexpectedly. .

[0012]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1 showing the overall configuration in a side view and FIG. 2 showing a plan view, a harvester 1 according to the present invention is a walking type that can run (forward / reverse) freely in a longitudinal direction of a ridge over a ridge A. A pair of left and right drive wheels (rear wheels) 2A and 2B are provided, and a gauge wheel (follower wheel, front wheel) 3 is provided only on one of the right and left sides (shown in the figure).

From the front to the rear, the harvester 1 has a weeding device 4, a scraping device 5, a leaf nipping / transporting device 6, a neck nipping / transporting device 7, and a portion between the leaf nipping / transporting device 6 and the neck nipping / transporting device 7. And a pair of left and right subsoilers 10 for expanding and softening the ridge A in the vicinity of the gauge wheel 3 in order to facilitate pulling out. Each drive unit is linked to the engine 11.

The engine 11 is mounted on a rear portion of a machine frame 12 framed in a U-shape in plan view.
The mission in the mission case 13 is directly connected to the output unit. The missions in the transmission case 13 are a traveling system mission and a working system mission (power system such as a weeding device and a pick-up device). The traveling system mission is a chain transmission in a pair of right and left transmission cases 14A and 14B. The driving wheels 2A and 2B are linked to the body so that the traveling speed of the driving wheels 2A and 2B can be changed at a predetermined speed.

One of the left and right transmission cases 14A and 14B, the left transmission case 14B in the figure, is provided via a left-right expansion / contraction guide mechanism 15 provided at the rear of the machine frame 12 and a telescopic transmission cylinder 16 having a nested structure. Expand and contract in the left and right directions
The tread is adjustable in accordance with the width of the ridge A shown in FIG.
A and 2B can roll on the ridge groove A1.

The work system transmission receives power from the weeding device 4 via a transmission shaft system 17 shown in FIGS. 1 and 2, and the transmission shaft system 17 is inclined forward and extends forward. The power is input to the scraping device 5, the leaf nipping and transferring device 6, and the like via a power distribution system 18 having a bevel gear or the like built in the shaft system 17. The weeding device 4 includes a weeding transmission case 19 erected at the end of the machine casing 12, sprocket wheels 20 and 21, which are rotatably supported on upper and lower portions of the case 19, and rotate around right and left axes.
A chain 22 wound around 0, 21; a lifting claw 23 attached to the chain 22 so as to be able to move up and down in the longitudinal direction; and a lower portion of the weeding transmission case 19, which extends forward. (See FIGS. 1 to 4).

In this example, three weeding transmission cases 19 are inclined in the forward and downward direction and are spaced in the left-right direction.
By circulating the chain 22 in the direction indicated by the arrow X, the foliage B1 lying down in the left and right direction of the crop B can be scooped up from below by the raising claws (tines) 23 so that it can be aligned in the front-rear direction. (See FIG. 2). Here, the weeding transmission case 19 of the weeding device 4 corresponds to one between the shoulder A2 of the ridge A and two between the strips of the crop B, as shown in FIGS. Raise the foliage B1 that hangs down from the part A2 and the foliage B1 that lays down between the streaks.
3, the leaves B1 facing in the left-right direction are aligned in the front-rear direction by scooping up in the vertical direction.

The weeding rod 24 in the weeding device 4 is extended from the lower part of each weeding transmission case 19 in a forwardly downwardly inclined shape, and is a foliage B1 that is oriented in the left and right direction in preparation for scooping by the scraping claw 23. Grass is gradually lifted. Here, each weeding rod 24 is formed as a bifurcated portion 24A near its stem (attachment portion to the case), surrounds the lower part of the transmission case 19 from both left and right sides, and The weeding guide 24 guides the stalk B1 to the weeding start portion, and the weeding rod 24 corresponding to the shoulder A2 of the ridge A is higher than the other weeding rods 24 (which are almost in contact with the ridge A). The stretched length is long (see FIG. 2), and the foliage hanging over the shoulder A2 and the foliage falling on the streak are gradually lifted.

The weeding rod 24 corresponding to the shoulder A2 is provided with a weeding cover 25A that extends outward in the left-right direction and is bent in the shape of an "H" in a side view. The weed cover 25A almost covers the gauge wheel 3 from above, so that when the long and long stems and leaves that have fallen down are lifted up by the weeding rod 24 and fall down again, they are prevented from stepping on the gauge wheel 3. doing.

That is, the weeding device 4 controls the harvester 1
Foliage B lying on ridge A when running along
1 is gradually lifted with a weeding rod 24 and
Fig. 2 shows that the foliage B1 is scooped up (paid up).
As shown in the figure, the shape is adjusted in the front-rear direction, and the trapping device 5 is used to form a trapped shape from the left and right.
Since the foliage B1 of the crop B, which is lodged and intertwined with the above, is vegetatively shaped in the front-rear direction and prepared for the next raking device 5, the above-described first problem has been achieved. is there.

Here, as shown in FIG.
At the bottom of the picking start portion (lower wheel winding portion), the foliage lifted by the weeding rod 24 at a distance of H from the top surface of the ridge A is scooped up, and the weeding rod 24 Also, when weeding is performed in combination with left and right weeding in the part 24A, scooping of the foliage B1 by excessive force is reduced, and crop B is prevented from being pulled out from ridge A.

That is, although the chain 22 of the weeding device 4 circulates at a slower (slower) speed than the squeezing belt of the squeezing device 5, the chain 22 of the weeding device 4 does not Since the peripheral speed is faster than the peripheral speed of the straightened portion (the portion where the claw 23 stands on the front side in FIG. 4), the entanglement of the foliage is gradually released by the weeding rod 24 and excessive foliage is caused by the claw 23. The crop B is prevented from being pulled out unexpectedly.

By arranging the picking claws 24 of the weeding device 4 in the circulating chain 22, the weeding is ensured even when long and short stems and leaves are mixed. When the claw 24 is inverted from the upper winding portion, as shown in FIG. 4, it is supposed to fall down substantially along the chain 22. Here, the leaf scraping device 5 following the weeding device 4 The fore-and-aft interval is made as small as possible so that foliage immediately after weeding and shaping in the fore-and-aft direction can be scraped from the left and right directions.

The weeding device 4 and the leaf scraping device 5 are shown in FIG.
As shown in FIG. 4 and FIG. 4, they are inclined forward and downward (inclined rearward and upward) and are provided in parallel with each other at an interval in the front-rear direction, and their height in the vertical direction is substantially the same. As shown in FIGS. 2 and 3, the leaf scraping device 5 winds an endless revolving body 27 represented by an endless belt over an upper driving pulley 25 and a lower driven pulley 26 so as to freely circulate. Built-in left and right transmission cases 28A, 28B
And an endless revolving body 27 indicated by an endless belt, which has a plurality of protruding rake claws 28 inclined and inclined with respect to the running direction. The tips of the claws 28 cross each other at a rear position corresponding to the center weeding case in the weeding device 4, where two foliage B, which are weeded in the front-rear direction by the weeding device 4, are arranged.
By lifting the sheet 1 in a embracing manner from the left and right, the sheet 1 is stretched linearly, and the succeeding (transfer) to the succeeding leaf holding and transferring apparatus (drawing belt apparatus) 6 is smoothly and reliably performed.

Here, while the picking claw 23 of the weeding device 4 is made of hard resin, the claw 2 of the leaf scraping device 5 is used.
Reference numeral 8 denotes a foliage B made of a soft elastic material such as rubber.
Soft touch to 1 to prevent crop B pain as much as possible. At the starting portion of the leaf scraping device 5 (the portion wound around the driven pulley 26), the tip of the scraping claw 28 is located near the neck of the crop B. From the root of the foliage, the grass can be embraced in the right and left direction.

That is, the leaf scraping device 5 circulates and rotates the endless revolving body 27 in the direction indicated by the arrow Y in FIG. By lifting while inserting, even the long and short stems and leaves can be surely stretched in a straight line and delivered to the succeeding leaf-portion holding and transferring device 6. The leaf nipping and transferring device 6 is shown in FIGS.
6, an upper drive pulley 30 and a lower driven pulley 31 are pivotally provided in each of a pair of left and right transmission cases 29 arranged as inclined forward and downward, and both pulleys 30 and 31 are provided. And transfer belts 32A and 32B indicated by rubber belts are wrapped around the belt so as to freely circulate.

The leaf nipping / transporting device 6 is arranged so as to be inclined rearward upward from the front pull-out start portion (the portion wound around the driven pulley 31) toward the rear in the transport direction. Here, the leaf scraping device 5 has a larger upward slope relative to the upward slope of the nipping and transporting device 6, and the vicinity of the front scraping start portion of the leaf scraping device 5. More specifically, a drawing start portion of the leaf nipping and transporting device 6 is arranged slightly above, in the vicinity.

By adopting such a configuration, as shown in FIG. 6, the start roller F at the start of the start is widened, and the transport belts 32A and 32B circulate in the Z direction shown in FIG. The range of action at the time of doing is widened, and the foliage is reliably and smoothly clamped and the subsequent pulling action is ensured, and since it is close to the leaf scraping device 5, it has been extended linearly. The escape of the foliage is prevented.

As shown in FIGS. 2 and 4, a leaf discharge rotating body 33 exemplified by a star wheel is provided above and below the right end portion of the leaf holding and transferring device 6.
The leaf, which is cutting waste, is dropped into the furrow.
Further, as shown in FIG. 4, since the squeezing action portion of the squeezing device 5 is located halfway through the transfer of the leaf holding and transferring device 6, the fall of the long foliage during the transfer is prevented.

There is provided a neck clamping and transferring device (neck positioning device) 7 which follows the leaf clamping and transferring device 6,
As shown in FIGS. 1, 2 and 4, the neck holding transfer device 7 is constituted by a pair of right and left transfer belts (34A, 34B). In the vicinity of the drawing start portion of the leaf-holding / transporting device 6, the inheritance start site of the neck-holding / transporting device 7 is disposed in close proximity.

Each of the left and right transfer belts 34A, 34B is composed of a driving pulley 35A, 35B and a driven pulley 36A.
As shown in FIG. 6, tension is wound around A and 36B endlessly via guide pulleys 37A and 37B, and the drive pulleys 35A and 35B are driven to rotate in the direction of arrow Q in FIG. The crop B can be transported backward, and can be cut by the cutting device 8 while leaving the foliage B1 for a predetermined length during the transport.

That is, when the foliage B1 which is extended substantially linearly by the raking device 5 is pinched by the transport belts 32A and 32B of the leaf-portion transporting device 6 and transported rearward, the belts 32A and 32B are moved rearward. Due to the upward slope, the two crops B are gradually pulled out from the ridge A, and the amount of pulling out (the pulling height) is such that the neck of the crop B moves upward at the lower edge of the transfer belts 34A and 34B. Is determined to be limited, and the leaf nipping and transferring device 6
The stems and leaves are extended over the transfer belts 32A, 32B and the transfer belts 34A, 34B for pinching the neck, and are cut by the cutting device 8 arranged in the both ends (triangular space) S.

Here, since the inheritance start portion (the wrapping portion of the drive pulleys 35A and 35B) of the neck holding and transferring device 7 is close to the drawing start portion of the leaf holding and transferring device 6, the left and right pairing is performed. Transfer belts 34A, 34B
The range of action involved in the rotation in the direction indicated by the arrow Q is widened, so that the foliage B1 can be reliably introduced into the neck holding and transferring device 7.

The neck holding / transporting device 7 secures the pulling-out operation while extending the foliage by the leaf holding / transporting device 6 from the inheritance start position to the position of the cutting device 8, while the neck portion is maintained after the cutting device 8. As shown in FIG. 6, a pair of transfer belts 34A, 34B is moved from the inheritance start position to the position of the cutting device 8 because the transfer belts are sandwiched and transferred rearward.
Is gradually narrowed, so-called clamping force (tension) is weakened during this period, and the pair of left and right transfer belts 34A and 34B are closely contacted with each other after the cutting device 8 to increase clamping force (tension). This solves the third problem described above.

Since the transfer belts 34A and 34B sandwich the neck of the crop, it is desirable that a sponge belt or the like be attached to the rubber belt in order to reduce pain at the neck contact portion. Here, a brief description will be given of a power transmission system for the raking device 5, the leaf nipping and transferring device 6, and the neck nipping and transferring device 7.

Power is transmitted from the power distribution system 18 shown in FIG. 2 to the drive pulley 30 of the leaf nipping and transferring device 6 via the power relay 38 shown in FIG.
Power is transmitted to a relay transmission case 39 having a wrapping transmission member arranged on the front upper surface of 9, and power is transmitted from the middle of the case 39 to the drive pulley 25 of the leaf scraping device 5 via a transmission member 40. At the same time, power is transmitted from the lower part of the relay transmission case 39 to the drive pulleys 35A and 35B in the neck holding and transferring device 7 via the transmission 41, and the leaf holding and transferring device 6 and the neck holding and transferring device 7 are driven synchronously. It is being done.

Power is transmitted to the cutting device 8 via the flexible transmission 42 shown in FIG.
Is transmitted to the cutter 43. The cutting device 8 is shown in FIG.
As shown in FIG. 6, a cutter 43 is provided which is driven to rotate about the vertical axis, and the cutting length can be freely adjusted by the screw feed means 44 in the roller S shown in FIG. 4, and the transfer belts 34A and 34B are provided. The cutter 43 is located right above the holding surface of the cutter 43.

As shown in FIG. 3, the left and right pair of subsoilers 10 are L-shaped straight blades as viewed from the front and rear, and are located in the vicinity of the lower portion of the leaf nipping and transferring device 6, and are shown in FIG. By vibrating back and forth by a transmission shaft system 46 that reciprocates around the illustrated left-right axis (pin) 45, the ridges are cut and vibrated at a position below the crop B to expand and soften the ridges B, thereby facilitating pulling out. It is doing.

The gauge wheel 3 is disposed at one side of the intermediate position between the subsoiler 10 and the weeding device 4, and the transmission shaft 48 having a bending portion is operated from the hand side of the operation handle 47 by operating the hand handle 49. The height can be adjusted (gauge adjustment) freely. An alignment discharge device 9 is provided at the rear of the neck holding and transferring device 7 so that the cut crop B is aligned on the ridge A and discharged into the ridge A while leaving the foliage that can be raised and bound.

4 and 6, the aligning / discharging device 9 is disposed at the rear of the cutting device 8, and the transfer belt 3 is provided.
4A, 34B and above the belts 34A, 34B.
B, an upper guide rod 50 long in the front-rear direction and intersecting with the holding surface (transfer direction) of B.
The lower guide rod 51 is provided with two lower guide rods 51 which are located below the upper guide rod 50 and are arranged in a crosswise manner with respect to the upper guide rod 50, and a rear end of the lower guide rod 51 is bent downward. A guide plate 52 having a vertical plate surface is fixed to one of the lower guide rods 51, and an upper drive pulley 53 </ b> A and a lower drive pulley 53 </ b> A are provided behind the lower bent rods 51 </ b> A of the two lower guide rods 51. Is provided with a discharge belt 54 having a projection 54A wound between the driven pulleys 53B.

Further, the driven pulley 3 of the transfer belt 34A
A star wheel 55 is rotatably mounted coaxially with 6A, and receives the running force of the transfer belt 34A running in the direction indicated by the arrow Q to drive the star wheel 55 in the discharge direction. The discharge belt 54 can freely circulate in the direction indicated by the arrow T in FIG. 4 by the rotational power of the driven pulley 36B of the transfer belt 34B via the bevel gear transmission case 56 shown in FIG.

Here, the aligning and discharging device 9 guides the foliage B1 of the crop B, which has been cut by the cutting device 8 and transferred backward by the neck holding transfer device 7, to the guide action of the upper guide rod 50 and the rotation of the star wheel 55. The bulb (ball) B2 is moved backward by the lower guide rod 51 and the guide plate 52 while being turned leftward by the force, and is moved backward by the force.
1A and the projection 54A of the discharge belt 54, the stem B1 is supported on the stem B1 and is slowly discharged onto the ridge A inside the right drive wheel 2A. As shown in FIG. Drops are discharged to the ridge A as a row toward the ridge A, where the drying of the crop B on the ridge A is promoted, and the ease of manual bundling work by collecting several pieces is ensured. It is.

When two harvests are completed on the outward trip by the harvester 1 according to the present invention, the steering wheel 47 is lifted or the like to change the direction of the drive wheels 2A, 2B to the starting point, and the remaining two wheels are turned.
The strip is harvested on the return trip as before.

[0044]

As described above in detail, according to the present invention, a neck pulling and transferring apparatus for reliably pulling out bulb crops vegetated in a field (ridge) and cutting the pulled out crops with a cutting device. (Claim 1) In addition to the above-mentioned action drop, the foliage of the crop vegetated in the field can be securely lifted and the extraction operation can be performed smoothly and reliably (claim 2). .

[Brief description of the drawings]

FIG. 1 is an overall side view showing an embodiment of a harvester according to the present invention.

FIG. 2 is an overall plan view showing one embodiment of a harvester according to the present invention.

FIG. 3 is an overall front view showing an embodiment of the harvester according to the present invention.

FIG. 4 is a side view additionally showing the operation of the main part of the harvester according to the present invention.

FIG. 5 is a perspective view of a weeding device of the harvester according to the present invention.

FIG. 6 is a plan view additionally showing the operation of the main part of the harvester according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 harvester 2A drive wheel 2B drive wheel 5 raking device 6 leaf pinching and transferring device (pulling device) 7 neck portion pinching and transferring device (positioning belt device)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazuaki Fukudome 64 Ishizukita-cho, Sakai-shi, Osaka Inside Kubota Sakai Works

Claims (3)

[Claims] 1. A harvester for bulb crops, in which a bulb portion is transferred from a leaf clamping device to a neck clamping device for pulling out a bulb crop and conveyed backward for harvesting, wherein the leaf clamping device comprises a pair of left and right transports. It is composed of a belt and is arranged to be inclined upward and backward from the front pull-out start position toward the rear in the transport direction.The neck holding transport device is composed of a pair of left and right transport belts and starts inheriting the front part. It is arranged so as to extend almost horizontally from the part toward the rear in the transfer direction, and near the drawing start part in the leaf pinching transfer device,
A harvester for bulb crops, wherein a succession start site of the neck holding / transporting device is arranged in close proximity. 2. A leaf scraping device is disposed in front of the leaf nipping and transporting device, and the leaf scraping device moves a pair of left and right circulating revolving bodies with a scraping claw at a predetermined interval in the traveling direction. The leaf scraping device is configured such that the rear ascending slope is increased with respect to the backward ascending slope of the nipping and transporting device, and a front portion of the leaf scraping device is provided. 2. The bulb crop harvester according to claim 1, wherein a pulling start site of the leaf nipping / transferring device is arranged close to the raking start site. 3. The bulb crop according to claim 2, wherein the tip of the scraping nail of the leaf scraping device is located near the neck of the bulb crop at the starting point of the scraping. Harvester.