JP2006081469A - Root vegetable crop harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a root vegetable crop harvester ensuring properly performing a cutting treatment of dividing the longitudinal direction of leaves and stems into a plurality of pieces, i.e. three or more pieces. <P>SOLUTION: This root vegetable crop harvester has the following mechanism: Root vegetable crops planted in rows are pulled off the ground during the machine body's traveling and then conveyed in a nearly horizontal specific direction by a leaves/stems unloading and conveying apparatus 14. In this process, the root vegetable portions are cut off by a 1st leaves/stems cutting device 18 located under the leaves/stems unloading and conveying apparatus 14, while the leaves/stems portions of the root vegetable crops are cut off by a 2nd leaves/stems cutting device 19 located above the leaves/stems unloading and conveying apparatus 14. In this root vegetable harvester, the 2nd leaves/stems cutting device 19 is equipped with a pair of elastic discs 34a and 34b functioning to nip and convey such leaves/stems portions. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a root crop harvesting machine for harvesting root crops such as garlic and onions.

After pulling out the rooted plant crops that have been planted from the ground while the aircraft is running, in the process of transporting the leaf stem discharge transport device in a substantially horizontal specific direction, the first position located below this leaf stem discharge transport device A root vegetable crop harvesting machine that cuts the root vegetable portion with a second leaf stem cutting device and cuts the root stem portion of the root vegetable crop with a second leaf stem cutting device located above the leaf stem discharging and conveying device. Exists (see, for example, Patent Document 1).
At this time, the second leaf stem cutting device includes a disk blade and a fixed guide plate for pressing the leaf stem portion against the disc blade.

  In this root vegetable crop harvesting machine, two parts along the length direction of the leaf stem part of the root vegetable crop are cut into three parts by the first leaf stem cutting device and the second leaf stem cutting device. If treated, the leaf stems of garlic and the like whose length exceeds 50 cm will be shortened appropriately. It is no longer attached and can be done efficiently.

Japanese Patent Laid-Open No. 2004-166535

  In the above-mentioned conventional root crop harvesting machine, the cutting process by the second leaf stem cutting device is performed through the guiding action of the leaf stem part by the fixed guide plate. Is not accurately performed, and the leaf stem portion is clogged between the disk blade and the fixed guide plate, and the working efficiency may be lowered.

  The present invention was devised in view of such problems, that is, to provide a root crop crop harvester that can accurately perform a cutting process for dividing the longitudinal direction of a leaf stem into three or more pieces. The purpose is to do.

  In order to achieve the above object, according to a first aspect of the present invention, as described in claim 1, after rooted root crops are pulled out from the ground while the aircraft is running, the leaf stem portion discharging and conveying device is substantially horizontal. In the process of transporting in a specific direction, the root leaf portion is cut by the first leaf stem cutting device located on the lower side of the leaf stem discharge transport device, and the second leaf located on the upper side of the leaf stem discharge transport device In a root vegetable crop harvesting machine configured to divide and cut a leaf stem portion of a root vegetable crop with a stem cutting device, the second leaf stem cutting device includes a pair of elastic disc bodies that sandwich and convey the leaf stem portion. It is characterized by.

  The second aspect of the present invention is the process according to the second aspect, wherein the rooted plant crops that have been planted are pulled out from the ground while the aircraft is running, and then transported in a substantially horizontal specific direction by the leaf stem discharge transport device. The root vegetable part is cut off by the first leaf stem cutting device located on the lower side of the leaf stem discharging and conveying device, and the root vegetable crop is removed by the second leaf stem cutting device located on the upper side of the leaf stem discharging and conveying device. In a root vegetable crop harvesting machine adapted to divide and cut a leaf stem portion, each of the second leaf stem cutting devices includes a pair of disc blades rotated about its corresponding longitudinal axis, and these circles It is characterized in that an elastic disc body for sandwiching a leaf stem portion is provided concentrically and concentrically on each upper side of the plate blade.

  Moreover, after 3rd invention pulled out the root vegetable crop in which one disk blade was planted from the ground during driving | running | working of an aircraft, as described in Claim 3, after one disk blade was planted, In the process of transporting in the longitudinal direction of the body by the leaf stem discharge transport device, the root vegetable part is cut off by the first leaf stem cutting device located below the leaf stem discharge transport device, and the leaf stem discharge transport device In a root crop crop harvesting machine configured to divide and cut the leaf stem portion of the root vegetable crop with the second leaf stem cutting device located on the upper side, the second leaf stem cutting device is configured to transport the leaf stem portion discharge transport device. A pair of disc blades that are positioned on the left and right sides of each other and that can rotate about the corresponding longitudinal axis and are partially overlapped in plan view, and the pair of discs in plan view Assuming a straight line that joins the intersections of the outer circumference of the blade, this straight line It is characterized by being made the configuration that is inclined so as to be displaced as the side to root crops already harvested side.

The above-described invention is preferably embodied as follows.
That is, as described in claim 4, of the pair of disc blades, the disc blade on the root crop crop already harvested side has a smaller diameter than the other disc blade, and the disc on the root crop crop harvest side The center of rotation of the blade is positioned in front of that of the other disk blade.

According to the present invention described above, the following effects can be obtained.
That is, according to the first aspect, the leaf stem portion in a state where the root vegetable portion is cut off is conveyed and held between the pair of elastic discs until it passes through the range where the divided cutting process is performed. Therefore, the leaf stem portion is not clogged with the second leaf stem cutting device, and the leaf stem portion is divided and cut more accurately than in the prior art by the holding and conveying force of the pair of elastic discs. .

  According to the second aspect, the same effect as that of the first aspect of the invention can be obtained and the following effect can be obtained, that is, a pair of circles rotating around the vertical axis. Since the leaf stem portion is surely divided and cut by the plate blade, clogging of the leaf stem portion into the second leaf stem cutting device is more reliably suppressed, and corresponds to each disc blade. The support structure and drive structure of the elastic disc body can be made simple, light and inexpensive.

  According to the third aspect of the present invention, since the leaf stem portion is surely divided and cut by the pair of disc blades rotating around the vertical axis, the leaf stem portion is clogged in the second leaf stem cutting device. In addition, after the cut leaves and stems are cut, they are spun off to the root crops already harvested by the rotational force of each disc blade, and the cut leaves and stems are not harvested. Therefore, it is possible to prevent the root vegetable crop yielding efficiency from being lowered due to falling.

  According to the invention described in claim 4, the same effect as that of the invention described in claim 2 or 3 can be obtained, and the following effect can be obtained, that is, the diameter of one of the disk blades. The second leaf stem cutting device comprising a pair of disc blades can be made light and compact, and the leaf stem part cut by the second leaf stem cutting device can be used as the root crop crop already harvested side. Can be easily realized, and since the disk blade with a small diameter is positioned on the front side, even if the positional deviation between the front and rear of the pair of disk blades is relatively small, It can be discharged by shifting it by a predetermined distance to the already harvested side of the root crop.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of a root vegetable crop harvesting machine according to the present invention, FIG. 2 is a plan view of the root vegetable crop harvesting machine, and FIG. 3 is a front view of the root vegetable crop harvesting machine. The harvesting machine) includes a self-propelled vehicle body (airframe) 2 having a crawler-type traveling device 1 and having a self-propelling function. As described above, root crops 3 such as garlic are planted in cocoon 4, but this harvesting machine first grabs the leaf stem portion 3a of the root crop 3 and pulls out the root crop portion 3b and then removes it. It is transported upward to cut the leaf stem portion 3 a and harvest only the root vegetable portion 3 b, and this is performed while the machine body 2 runs in the direction along the ridge 4.

  More specifically, the leaf stem portion 3a to be harvested from now and the leaf stem portion 3a to be harvested are separated by a severing device 6 that rotates the tine 5 arranged in a rearwardly rising and inclined manner in the vertical plane, Only the leaf stem portion 3a to be harvested from now on is scraped back by the scraping device 8 composed of the tine 7 which enters the mutual trajectory in the upward inclined horizontal plane and rotates backward together. The leaf stem portion 3a scraped by the scraping device 8 is formed from a pair of belts 9 that rotate backward together while sandwiching the leaf stem portion 3a between the opposing surfaces in a rearwardly inclined horizontal plane provided behind the leaf stem portion 3a. The root vegetable portion 3b is pulled out from the ground by being sandwiched by the sandwiching and conveying apparatus 10 as described above. At this time, a vibration device 12 is provided at the lower part of the starting end of the holding and conveying device 10 so that a vibrating blade 11 having an L-shape in front view is inserted into the soil to loosen the soil around the root vegetable portion 3b. It becomes easy.

The extracted root vegetable part 3b is conveyed together with the leaf stem part 3a to the rear and upper side by the sandwiching and conveying device 10, and the root vegetable crop 3 at this time is suspended in a substantially vertical upright posture by the sandwiching and conveying device 10. It will be in the state. The clamping position of the leaf stem portion 3a is determined by the starting end height of the clamping conveyance device 10, and this height needs to be appropriately changed. Therefore, the nipping and conveying apparatus 10 and a height aligning and conveying apparatus 13, a leaf stem discharge and conveying apparatus 14 and a leaf and stem holding and conveying apparatus 15 which will be described later are configured in an integrated set 16, and this set 16 Is adjusted by rotating up and down around a fulcrum shaft 17 provided in the machine body 2.
In the above configuration, the nipping and conveying device 10, the height aligning and conveying device 13, the leaf stem discharge and conveying device 14, and the leaf stem holding and conveying device 15 constitute the root vegetable crop conveying means A.

  4 is a side view showing a part of the set 16, FIG. 5 is a view showing the x1-x1 portion of FIG. 4, FIG. 6 is a plan view showing a part of the set 16, and FIG. FIG. 8 is a plan view showing the rear part of the leaf stem portion discharging and conveying apparatus of the root vegetable crop harvesting machine, FIG. 9 is a rear view showing the rear part of the leaf stem part discharging and conveying apparatus, and FIG. 10 is the leaf. Although it is a side view which shows the rear part of the stem part discharge | emission conveyance apparatus, the set 16 of this example is the said clamping conveyance apparatus 10, the height alignment conveyance apparatus 13, the leaf stem part discharge conveyance apparatus 14, and the leaf stem part holding | maintenance conveyance apparatus 15 The first leaf stem cutting device 18 and the second leaf stem cutting device 19 are included. Among these, the height alignment conveyance device 13 is suspended below the rear portion of the nipping / conveying device 10 by the attachment material 21 with respect to the frame 10A of the nipping / conveying device 10, and the leaf stem portion is opposed by the opposing surface in the horizontal plane. It is comprised of a pair of endless belts 13a stretched in the horizontal direction while rotating backward while sandwiching 3a.

  As shown in FIGS. 4 to 7, the leaf stem discharging and conveying device 14 includes a lower horizontal conveying portion 22 and an upper horizontal conveying portion 23, and the lower horizontal conveying portion 22 The part is supported by a support arm 24 extended from the frame 10A, and the front part is supported by a stage 25 that is also attached to the frame 10A, and is positioned above the height-aligning conveyance device 13 and below the sandwiching conveyance device 10 And a pair of horizontal directions that are partly overlapped with the end portion of the height aligning and transporting device 13 and rotate backward together while holding the leaf stem portion 3a by the opposing surface in the horizontal plane. It is configured to include an endless belt 22a that is stretched.

  The upper horizontal transfer unit 23 is provided above the lower horizontal transfer unit 22 by a support arm 24, and includes an endless protruding chain 23a that rotates backward on a horizontal plane, and the protruding chain. 23a is composed of a push plate 26 which is long in the front-rear direction and is elastically pressed from the right side to the left side, and the leaf stem portion 3a is sandwiched between the projecting chain 23a and the push plate 26 and conveyed backward. Is. At this time, the rear end portion 26a of the push plate 26 extends substantially beside a longitudinal rotation center shaft 30a described later.

  The leaf stem holding / conveying device 15 is supported at its rear portion by a support arm 24 and at its front portion by a support member (not shown) that is the same body as the stage 25, and above and below the height aligning / conveying device 13. Located near the lower side of the horizontal conveyance unit 22 and near the upper side of the leaf stem cutting device 18, the start end portion thereof is partially overlapped with the end portion of the height alignment conveyance device 13, and in a horizontal plane It is composed of a pair of endless belts 15a extending in the horizontal direction that rotate backward while holding the leaf stem portion 3a between the opposing surfaces.

  As shown in FIGS. 8 to 10, the first leaf stem cutting device 18 is supported by a support arm 24 on the lower surface portion thereof, behind the height aligning and conveying device 13, and on the lower horizontal conveying unit 22. A pair of left and right disc blades 28, 28 that are positioned in the vicinity of the lower side and rotate in the same shape as the shafts 27a, 27b around the longitudinal rotation center shafts 27a, 27b are partially overlapped and the apparatus frame 18a. The disk blades 28 are rotated in the direction in which the overlapping portions thereof are directed rearward, and the pair of disk blades 28 and 28 form the leaf stem portion 3a at the overlapping portions. It is sandwiched and cut.

  The second leaf stem cutting device 19 is supported by the support arm 24 and is positioned at the upper rear end portion of the upper horizontal transport portion 23, and is a pair of left and right disc blades that sandwich the leaf stem portion 3a. A first disc blade 29a and a second disc blade 29b are provided, and the first disc blade 29a is fixed to the longitudinal rotation center shaft 30a and rotated in the same body as the shaft 30a. A disk blade 29b is rotated through a longitudinally rotating central shaft 30b fixed to a support arm 24 via a support piece 31, and a rotary support 32 supported rotatably on the shaft 30b via a bearing 31. It is configured to be freely supported, and further, a leaf and stem clamping and feeding means 33 is formed on the upper side of the first and second disc blades 29a and 29b.

At this time, the first and second disc blades 29a and 29b are preferably provided so as to be adjustable in height with respect to the support arm 24, and the diameter of the first disc blade 29a is increased, and the second disc blade 29b is provided. The diameter of each of the outer peripheral portions is arranged so as to partially overlap each other in a plan view, and the overlapped portion is used as a leaf stem portion conveyance path (chain with protrusion) of the leaf stem portion discharge conveyance device 14. 23a of the right-sided portion m shown in FIG. 6).
More specifically, the first and second disk blades 29a and 29b and the left and right vertical rotation central shafts 30a and 30b corresponding to the first and second disk blades 29a and 29b are connected to the leaf stem transport path (the projecting chain 23a). The second disk blade 29b and the corresponding vertical rotation center shaft 30b are arranged on the left and right sides of the right-handed portion m) of the first disk blade 29a and the corresponding vertical rotation center. When assuming a straight line SL1 that is located on the front side of the shaft 30a and that combines the intersection points kp1 and kp2 before and after the outer circumferential lines of the first disc blade 29a and the second disc blade 29b intersect in plan view, The straight line SL1 is inclined so that the rear side thereof is displaced to the root vegetable crop already harvested side 4a shown in FIG.

  The leaf stem nipping / feeding means 33 has a first elastic disk body 34a in the same shape as the first disk blade 29a on the upper side of the first disk blade 29a, and this second circle on the upper side of the second disk blade 29b. The second elastic disk body 34b is fixed in the same shape as the plate blade 29b, the first elastic disk body 34a has a diameter substantially the same as that of the first disk blade 29a, and the second elastic disk body 34b is the second. The diameter of the disc blade 29b is approximately the same as that of the disc blade 29b. The leaf stem portion 3a is sandwiched between the first and second elastic disc bodies 34a and 34b, and the rotation of the first disc blade 29a is the first and second. The elastic disc bodies 34a and 34b and the leaf stem portion 3a sandwiched between the elastic disc bodies 34a and 34b are transmitted to the second disc blade 29b.

  At this time, the first elastic disc body 34a has a hub portion 35 having a central hole 35a, an arm portion 36 inclined with respect to the radial direction, and a protrusion 37b in the thickness direction on the outer peripheral surface 37a at an appropriate circumferential pitch. A large number of outer peripheral portions 37 are formed, the whole is integrally formed of a rubber material, and the thickness thereof is about several tens of millimeters. The second elastic disc body 34b is formed in a central hole 38 (see FIG. 9). ) And a plurality of circular through holes 39 formed on a specific radius circle, and an outer peripheral portion 40 formed with a plurality of protrusions 40b in the thickness direction at an appropriate pitch in the circumferential direction on the outer peripheral surface 40a. It is integrally formed with a material and has a thickness of about several tens of millimeters.

  The first circular support plate 41 having a relatively large thickness is positioned between the first disc blade 29a and the first elastic disc body 34a, and the arm portion 36 is halfway along the upper surface of the first elastic disc body 34a. A first circular pressure plate 42 having a diameter extending is placed, and a second circular support plate 43 having a relatively large thickness is positioned between the second disk blade 29b and the second elastic disk body 34b. A second circular pressing plate 44 having a smaller diameter is placed on the upper surface of the second elastic disc body 34b. A cylindrical member 45 is inserted into a through hole in the thickness direction formed in the first circular support plate 41 and supported in an upright shape, and the cylindrical member 45 is a through hole in the thickness direction of the first elastic disc body 34a. The cylindrical member 46 is inserted into a through hole in the thickness direction formed in the second circular support plate 43 and is supported upright, and the cylindrical member 46 is supported by the thickness of the second elastic disk body 34b. Is inserted into the through hole in the direction.

  The first circular pressure plate 42, the first elastic disk body 34a, the first circular support plate 41, and the first disk blade 29a have a long bolt 47a inserted through the bolt hole of the first circular pressure plate 42 as a cylindrical member. 45 is inserted into the inner hole 45 and is screwed to a circular fixed seat 48 fastened and fixed with a nut to the upper end portion of the vertical rotation center shaft 30a, thereby being fixed in the same shape as the vertical rotation center shaft 30a. The second circular pressing plate 44, the second elastic disk body 34b, the second circular support plate 43, and the second circular blade 29b have a long bolt 47b inserted through the bolt hole of the second circular pressing plate 44. By being inserted into the inner hole of the member 46 and screwed to the rotation support 32, the member 46 is rotatably mounted around the vertical rotation center shaft 30b.

  A pair of upper and lower left guide bars 49a and 49b for restricting the left side position of the leaf stem portion 3a moved rearward are substantially the same as the straight line SL1 shown in FIG. A pair of upper and lower right guides for restricting the right position of the leaf stem portion 3a, which is provided in the same shape as the support arm 24 and directed to the direction, and is moved backward at the upper and lower portions of the second elastic disc body 34b. The rods 50a and 50b are provided in the same shape as the support arm 24 so as to be directed in substantially the same direction as the straight line SL1.

  The vertical rotation center shaft 30a and the vertical rotation center shaft 30c positioned on the right front side of the vertical rotation center shaft 30a are rotatably supported by the support arm 24, and the left vertical rotation center shaft 30a is sequentially arranged from the lower side. A pulley 51 that is wound around the belt 15a of the leaf stem holding and conveying device 15 and rotationally drives the belt 15a, and a pulley 52 that is wound around the belt 22a of the lower horizontal conveying portion 22 and rotationally drives the belt 22a. And a sprocket 53 that rotates around the protrusion-equipped chain 23a of the upper horizontal conveyance section 23 and rotates the protrusion-provided chain 23a is fixed. In order, the pulley 51 that is wound around the belt 15 a of the leaf stem holding and conveying device 15 and rotationally drives the belt 15 a, and the belt 22 of the lower horizontal conveying unit 22. The multiply wound around it is fixed a pulley 52 for rotationally driving the belt 22a concentrically.

And the drive mechanism of each part is made as follows.
First, the transmission pulley 54 is attached to the fulcrum shaft 17, and the power transmitted from the engine 55 to the fulcrum shaft 17 is transmitted to the input pulley 57 of the first leaf stem cutting device 18 by the chain or belt mechanism 56. The power transmitted to the input pulley 57 drives the respective disc blades 28 and 28 via the bevel gear mechanism in the apparatus main body 18a and the longitudinal rotation central shafts 27a and 27b.

  The power transmitted to the input pulley 57 of the first leaf stem cutting device 18 is further transmitted from the pulley 57a (see FIG. 4) concentric with the pulley 57 by the chain or the belt mechanism 58 on the left and right sides of the leaf stem discharge transport device 14. The power transmitted to each of the input pulleys 59 and 59 is conveyed horizontally to the lower side via the bevel gear mechanisms 60 and 60, the longitudinal rotation center shafts 30a and 30c, and the pulleys 52 and 52. The belts 22a and 22a on the left and right sides of the part 22 are driven.

  The power transmitted to the left input pulley 59 is transmitted through the left longitudinally rotating central shaft 30 a and the sprocket 53, in addition to the protruding chain 23 a of the upper horizontal conveying section 23, the first disc blade 29 a and the first elastic force. The disk body 34a is also driven. Further, the pulleys 57a and 57a and the input pulley 20 of the holding and conveying apparatus 10 are connected by a chain or belt mechanism 58, and thereby the belts 9 and 9 of the holding and conveying apparatus 10 are driven.

  On the other hand, the power transmission to the height aligning / conveying device 13 is performed by connecting the end pulleys 61 and 61 and the starting end pulleys 62 and 62 of the leaf stem discharge / conveying device 14 via the longitudinal connecting shafts 63 and 63. To be done by. In this case, the longitudinal connecting shaft 63 is rotatably supported through a bearing member (not shown) fixed in the same body as the mounting member 21, and the length thereof can be adjusted using spline fitting or the like. By changing the attachment position of the attachment material 21 with respect to the frame 10A or the like, the entire height aligning / conveying device 13 is moved up and down to change the distance from the first leaf stem cutting device 18, and the length of the leaf stem portion 3a to be cut off It is preferable to be able to adjust.

  In the structure described above, when the root crop 3 having the leaf stem portion 3a sandwiched by the sandwiching and transporting device 10 reaches the height aligning and transporting device 13, it is also sandwiched by the height aligning and transporting device 13 and transported backward. At this time, as it goes to the rear of the height aligning / conveying device 13, the vertical distance from the nipping / conveying device 10 becomes wider, so that the leaf stem portion 3 a is broken in this state (however, the horizontal conveying speed component is Set the same). For this reason, the clamping force of the belts 13a and 13a of the height aligning and conveying device 13 is made weaker than that of the belts 9 and 9 of the clamping and conveying device 10, and the leaf stem portion 3a is located above the pair of belts 13a and 13a. To be able to slide. However, the root vegetable part 3b is not allowed to pass between the belts 13a and 13a. Therefore, at the end of conveyance of the belts 13a and 13a, the shoulder (soil part) of the root vegetable part 3b is rubbed against the lower ends of the belts 13a and 13a. To rise. As a result, when the root crop 3 is moved backward from the height aligning / conveying device 13, the shoulder height of the root vegetable portion 3b is aligned.

  When the leaf stem portion 3a is applied to the vicinity of the end of the height aligning and conveying device 13, this time, the leaf stem portion 3a is also sandwiched by the lower horizontal conveying portion 22 and conveyed rearward. At this time, since the end portion of the height aligning and conveying device 13 and the starting end portion of the lower horizontal conveying portion 22 are partially overlapped, the leaf stem portion 3a is lowered while the height aligning and conveying device 13 does not come off. The horizontal transfer unit 22 on the side is sandwiched, and the inheritance is ensured. At this time, the leaf stem portion 3a is in a state of being sandwiched between three members of the sandwiching and transporting device 10, the height aligning and transporting device 13, and the lower horizontal transporting unit 22, but the belt 22a of the lower horizontal transporting unit 22 is used. , 22a has the largest clamping force among these three, so that the leaf stem portion 3a sandwiched by the sandwiching and transporting device 10 slides between the belts 9 and 9 and descends, and the root vegetable portion 3b The height is maintained at the height sandwiched by the lower horizontal conveyance unit 22. During this time, the leaf stem portion 3a is released from the belts 9 and 9 of the sandwiching and conveying device 10, and subsequently, the portion near the root vegetable portion is sandwiched between the leaf stem portion holding and conveying device 15, and the upper horizontal conveying portion 23 It is also sandwiched by the protruding chain 23a.

  When the leaf stem portion 3a starts to be conveyed by the lower horizontal conveyance portion 22 and the upper horizontal conveyance portion 23 (the root vegetable portion 3b is also attached), the leaf stem portion 3a is detached from the height alignment conveyance device 13, and thereafter the leaf stems. The part below the head holding and conveying device 15 is free and reaches the first leaf stem cutting device 18, and the pair of left and right disc blades 28 and 28 cut the leaf stem portion 3 a at the overlapping portion and the root vegetable portion 3 b side. Is cut off from the upper stem 3a. The disk blades 28 and 28 at this time rotate in a direction in which the leaf stem portion 3a is pushed out together, thereby improving cutting performance. By the way, since the cutting height (length) of the leaf stem portion 3a is not changed after the root vegetable portion 3b is detached from the height aligning and conveying device 13, the belt of the height aligning and conveying device 13 is used. That is, the height (length) of the lower ends of 13a and 13a and the disc blades 28 and 28 of the first leaf stem cutting device 18. In this case, since the height aligning and conveying device 13 and the leaf stem holding and conveying device 15 are both installed horizontally below the sandwiching and conveying device 10 provided obliquely, the height aligning and conveying device 13 and the leaf stem are disposed. A sufficient space is ensured between the head holding and conveying device 15 and the cutting length of the leaf stem portion 3a is sufficiently secured. In the case of garlic or the like, the leaf stem part 3 may be left long on the root vegetable part 3b side to be harvested.

  The leaf stem portion 3a cut by the first leaf stem cutting device 18 is nipped and conveyed to the rear of the machine body 2 by the upper horizontal conveyance portion 23 and the lower horizontal conveyance portion 22 even after the root vegetable portion is cut off. . When the leaf stem portion 3a reaches the vicinity of the pair of disc blades 29a and 29b of the second leaf stem cutting device 19 by this conveyance, the leaf stem portion 3a is rotated in the same shape as the longitudinal rotation center shaft 30a. The elastic disk body 34a is sandwiched between the elastic disk body 34a and the second elastic disk body 34b that is brought into pressure contact with the first elastic disk body 34b and is rotated around the longitudinal rotation central axis 30b. Is no longer granted. Thereafter, a leaf stem conveyance force is further applied from the upper horizontal conveyance unit 23, and the first elastic disk body 34a and the second elastic disk body 34b are sandwiched by the rotational force of the first elastic disk body 34a. In the state, it is surely moved backward.

  On the other hand, the first disk blade 29a is rotated in the same shape as the longitudinal rotation center shaft 30a, and the second disk blade 29b is rotated by the first elastic disk body 34a and the second elasticity. The leaf stem portion 3a, which is transmitted and rotated by the disc body 34b, is fed and moved by the upper horizontal conveying portion 23, the first elastic disc body 34a, and the second elastic disc body 34b. In the middle of this length, the first disc blade 29a and the second disc blade 29b are surely attracted to this superposition by the rearward movement of the superposition of the first disc blade 29a and the second disc blade 29b. However, the height position indicated by reference numeral p1 in FIG. 4 is reliably cut and divided into upper and lower parts. The feed force to the rear of the first disc blade 29a and the second disc blade 29b at this time ensures the divisional cutting of the leaf stem portion 3a by the first disc blade 29a and the second disc blade 29b. Contribute.

  When the first elastic disc body 34a and the second elastic disc body 34b sandwich the leaf stem portion 3a, both of the disc bodies 34a and 34b are compressed and deformed in the radial direction by their own elasticity, but the first elastic disc Since the body 34a is formed with a relatively large space in the vicinity of the arm portion 36 and the radial thickness of the outer peripheral portion 37 is relatively small, the body 34a is more easily elastically deformed than the second elastic disk body 34b. The leaf stem portion 3a sandwiched between the elastic disk body 34a and the second elastic disk body 34b is relatively strongly controlled by the outer peripheral edge of the second elastic disk body 34b, that is, the second elastic disk body 34b is relatively strained. It is stably conveyed while being guided by a small outer peripheral edge.

  Then, the radial deformation of the first elastic disc body 34a is limited by the outer peripheral edge of the first circular pressing plate 42 of the first elastic disc body 34a, and the radial compression deformation of the second elastic disc body 34b is the second. Since it is limited by the outer peripheral edge of the second circular pressing plate 44 of the elastic disc body 34b, the first elastic disc body 34a and the second elastic disc body 34b are prevented from being excessively irregularly deformed, and Since the leaf stem portion 3a is sandwiched between the relatively thick outer peripheral surface 37a of the first elastic disc body 34a and the relatively thick outer peripheral surface 40a of the second elastic disc body 34b, the left and right direction of the leaf stem portion 3a Inclination is effectively prevented, and these contribute to stable feeding and movement on the leaf stem moving path while maintaining the leaf stem portion 3a in an upright posture.

When the leaf stem portion 3a sandwiched and conveyed by the first elastic disc body 34a and the second elastic disc body 34b is divided and cut vertically by the first disc blade 29a and the second disc blade 29b, the leaf stem portion 3a. After the lower horizontal portion is no longer provided with the leaf stem conveying force from the upper horizontal conveying portion 23, the root crop crops existing obliquely backward are displaced by the oblique rearward displacement of the overlapping points of the first disc blade 29a and the second disc blade 29b. The first disc blade after falling off while being bounced off to the harvest side 4a, while the upper portion of the leaf stem portion 3a is no longer provided with the holding and conveying action by the first elastic disc body 34a and the second elastic disc body 34b. 29a and the second disc blade 29b are dropped while being jumped off to the harvested side 4a of the root vegetable crops obliquely rearward due to the oblique rearward displacement of the overlapping portion of the second disc blade 29b. Accordingly, a phenomenon or root vegetable such that the leaf stem piece after being cut by the first disc blade 29a and the second disc blade 29b is entangled with the constituent members below the first disc blade 29a and the second disc blade 29b. A phenomenon of falling on the root crop 3 on the unharvested side 4b is avoided.
Further, the right and left guide rods 49a, 49b, 50a, 50b are located in the vicinity of the leaf stem moving path with the leaf stem portion 3a sandwiched and conveyed between the first elastic disc body 34a and the second elastic disc body 34b inclined in the left-right direction. This contributes to preventing entanglement of the components.

  The upper and lower portions of the leaf stem portion 3a after being cut by the first and second disc blades 29a, 29b are in a state of being shorter than the leaf stem portion 3a before cutting, and these leaf stems The portion 3a portion is sown by the tilling nail after the harvesting operation is completed, and at this time, the shortened leaf stem portion 3a portion is efficiently buried in the ground without being entangled with the tilling nail. It becomes.

  Although the root vegetable part 3b which cut | disconnected the leaf stem part 3a falls below, the collection apparatus 65 which consists of the belt conveyor 64 which moves to the right side of the body 2 below the 1st leaf stem cutting apparatus 18 is provided, The fallen root vegetable part 3b is received by the belt conveyor 64 and sent to the rear right side of the machine body 2. The rear right portion of the machine body 2 serves as a container storage 66, and an operator who moves along with the harvester divides the root vegetable portion 3b on the belt conveyor 64 into non-defective products and defective products. Left untouched and collected in the container c1 on the container yard 66. The defective product is picked up from the belt conveyor 64 by the operator and placed on the container stand 67 on the rear side of the belt conveyor 64. It is put into the container c2.

  In the above embodiment, the second leaf stem cutting device 19 is provided in a plurality of stages in the vertical direction, and the plurality of second leaf stem cutting devices 19 indicate the leaf stem portion 3a, for example, by reference numerals p2 and p3 in FIG. It is also possible to divide and cut at a plurality of height positions to further shorten the size.

It is a side view of the root vegetable crop harvester according to the present invention. It is a top view of the root vegetable crop harvesting machine. It is a front view of the root vegetable crop harvester. It is a side view which shows a part of said root vegetable crop harvesting machine. It is a figure which shows the x1-x1 part of FIG. It is a top view which shows a part of said root crop crop harvesting machine. It is a rear view which shows a part of said root crop crop harvesting machine. It is a top view which shows the rear part of the leaf stem part discharge | emission conveying apparatus of the said root vegetable crop harvesting machine. It is a rear view which shows the rear part of the said leaf stem part discharge conveyance apparatus. It is a side view which shows the rear part of the said leaf stem part discharge conveyance apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Root vegetable crop 3a Leaf stem part 14 Leaf stem part discharge conveyance apparatus 18 1st leaf stem cutting apparatus 19 2nd leaf stem cutting apparatus 29a 1st disk blade 29b 2nd disk blade 30a Longitudinal rotation center axis (vertical axis)
30b Vertical rotation center axis (vertical axis)
34a First elastic disk body 34b Second elastic disk body

Claims (4)

  After pulling out the planted root crops from the ground while the aircraft is running, it is located below this leaf stem discharge transport device in the process of transporting it in a specific horizontal direction with the leaf stem discharge transport device A root vegetable crop harvesting machine which cuts the root vegetable part with the first leaf stem cutting device and splits and cuts the leaf stem part of the root vegetable crop with the second leaf stem cutting device located above the leaf stem discharging and conveying device. The root leaf crop harvesting machine is characterized in that the second leaf stem cutting device includes a pair of elastic disc bodies that sandwich and convey the leaf stem portion.   After pulling out the rooted plant crops that have been planted from the ground while the aircraft is running, in the process of transporting the leaf stem discharge transport device in a substantially horizontal specific direction, the first position located below this leaf stem discharge transport device In a root crop crop harvesting machine that cuts off the root crop part with one leaf stem cutting device and splits and cuts the leaf stem part of the root vegetable crop with a second leaf stem cutting device located above the leaf stem discharge transport device The second leaf stem cutting device is provided with a pair of disc blades that are rotated about the corresponding longitudinal axis, and elastic for sandwiching the leaf stem portion above each of the disc blades. A root crop crop harvesting machine characterized in that disc bodies are provided concentrically and in a concentric manner.   After the rooted root crops planted are pulled out from the ground while the aircraft is running, the first is located below the leaf stem discharge transport device in the process of transporting in the longitudinal direction by the leaf stem discharge transport device. In the root vegetable crop harvesting machine, which cuts off the root vegetable part with the leaf stem cutting device and splits and cuts the leaf stem part of the root vegetable crop with the second leaf stem cutting device located above the leaf stem discharge transport device, The second leaf stem cutting device is positioned on the left and right sides across the transport path of the leaf stem discharge transport device, and both can rotate about the corresponding vertical axis and are partially polymerized in plan view. A pair of disc blades and a straight line connecting the intersections of the outer peripheral lines of the pair of disc blades in a plan view so that the straight line is displaced toward the root crop already harvested side toward the rear side. Characterized by an inclined configuration Root crops harvesting machine for.   Of the pair of disc blades, the disc blade on the root crop crop already harvested side has a smaller diameter than the other disc blade, and the rotation center of the disc blade on the root crop crop harvest side is the other disc blade The root vegetable crop harvesting machine according to claim 2, wherein the root vegetable crop harvesting machine is located in front of the root vegetable crop.

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