JP5059578B2 - Leaf vegetable harvesting machine - Google Patents

Description

  The present invention relates to a leaf vegetable harvesting machine for harvesting leafy vegetables such as spinach, and particularly to harvesting only leaf parts of leafy vegetables.

  Traditionally, spinach harvesting has been done by manually pulling out the roots one at a time, but such a manual harvesting operation is unnatural for a long time (an attitude in which the waist and legs are bent). As a result, the work was physically demanding and the work efficiency was very poor.

  On the other hand, a leaf vegetable harvesting machine as disclosed in, for example, Japanese Patent Laid-Open No. 9-308353 (Patent Document 1) has been known, and this known leaf vegetable harvesting machine is self-propelled. A root cutting blade is used to cut the roots of leaf vegetables one by one, and the root cut leafy vegetables can be extracted from the field and transported and collected.

  However, with this known leaf vegetable harvesting machine, leaf vegetables can be harvested while the harvesting machine is self-propelled (the body is less fatigued), but a root cutting blade (cuts the root by diving into the surface layer in the ground) However, the roots of leafy vegetables could only be cut one by one, so the harvesting efficiency was poor. Further, since the root cutting blade travels in the ground, it is difficult to cut in a relatively short period of time, and there is a problem that the durability of the blade is poor.

JP-A-9-308353

  Leafy vegetables such as spinach make the leaves edible, and in particular when used for processing, only the leaves need to be harvested. In that case, the stem part exposed from the field scene is cut | disconnected (each leaf part falls apart), and what is necessary is just to collect each leaf part.

  By the way, leafy vegetables such as spinach are planted in 5 to 6 strips with a predetermined interval on the left and right sides of one pod, but when cutting the leafy vegetable stems exposed from the field scene, there is a great burden on the cutting blade. Since it does not take up, it is possible to cut the leafy vegetables at the same time.

  On the other hand, weeds are mixed together with the cultivated leafy vegetables in the field (basket), and when we cut the entire width of the straw at the same time, weeds are also cut off at the same time. If weeds are mixed in the collected leafy leaf part, weed removal work needs to be performed later, but if a large amount of weed is mixed in the leafy leaf part, it takes a long time for weed removal work. There is a problem that it takes.

  Therefore, the invention of the present application is to cut the weeds mixed in the field as much as possible in the leaf vegetable harvesting machine that cuts the leaf vegetables such as spinach at the stems and harvests only the leaves. It is an object.

  The present invention has the following configuration as means for solving the above problems. The present invention is directed to a leaf vegetable harvesting machine suitable for harvesting only leaf portions of leaf vegetables in which each leaf portion is separated by a stem portion such as spinach.

  When cultivating leafy vegetables such as spinach, they are planted at a predetermined interval (for example, an interval of about 15 to 20 cm) in front, rear, left and right. Further, when planting leafy vegetables on a cocoon, if the cocoon width is about 90 cm, for example, the leafy vegetables are often planted in a state where about 5 to 6 strips are aligned in the cocoon length direction.

  The leaf vegetable harvesting machine of the present invention installs a body frame on the traveling device, and cuts the stem portion of the leaf vegetable cultivated in the field at a position slightly separated from the field scene at the front end position of the body frame. And a conveyor belt that carries each leaf section cut by the cutting blade to the machine frame and transports it to the rear side of the machine frame. It has a length that can be cut at the same time.

  Further, in the leaf vegetable harvesting machine of the present invention, the cutting blade reaches the weeds that protrude forward from the cutting blade and slide in contact with the field scene at the front part position of the machine frame. While weed pressing plates that can be pushed forward are provided, each weed pressing plate is slidable left and right and tilted up and down.

  The leaf vegetable harvesting machine of the present invention can be self-propelled by a traveling device, but a motor or an engine can be used as a driving source of the traveling device. Further, wheels and crawlers (each of which has a pair of left and right) can be used for the traveling unit. The distance between the left and right traveling parts (wheels and crawlers) is such that it can straddle the field straw (the width of spinach cultivation is mostly about 90 cm) (for example, about 120 cm). In addition, the traveling speed at the time of the harvesting operation by this traveling device can be freely adjusted in a range from a low speed to, for example, about 60 m / min (in particular, a traveling speed of about 20 m / min to 40 m / min can be operated in a stable state).

  The body frame constitutes the skeleton of the leaf vegetable harvesting machine, and can be adopted in which two left and right side plates, which are long in the front and rear directions, are tiltably supported with respect to the left and right columns. The left and right side plates serve as mounting bases for cutting blades (reaping devices), conveyor belts (conveying devices), brush rolls (raising devices) described later, and the like. The left and right side plates can be adjusted in height (tilt angle of the side plate) at the front end of the side plate by a height adjusting device (with a ground plate). The body frame is provided with a steering handle.

  As the cutting blade, one having an upper blade and a lower blade in which a large number of protruding blade edges are arranged on the left and right can be used. In addition, this cutting blade may have a left and right length (for example, 100 cm) that is approximately the same as or slightly longer than the ridge width (about 90 cm). This cutting blade is attached to the lower surface of the front end portion of the left and right side plates of the fuselage frame in a left-right orientation. Further, the cutting blade is positioned at a position slightly (for example, about 1 to 2 cm) away from the farm scene by adjusting the height of the front end portions of the left and right side plates with the height adjusting device. And this cutting blade can shear the stem part of a leaf vegetable by vibrating an upper blade and a lower blade mutually in the left-right reverse direction with a motor.

  The conveyor belt preferably has a width that is slightly wider than the ridge width of the field. For example, if the ridge width is about 90 cm, the width of the conveyor belt may be about 100 cm. In addition, this conveyor belt is installed in an inclined posture with a low front and rear height, but the front end of the conveyor belt is slightly retracted (for example, about 2 to 3 cm) from the front end of the cutting blade and as far as possible to the cutting blade. It is good to make it fall to the position which adjoins closely (it becomes easy to ride the cut leaf part on the front-end part of a conveyor belt). This conveyor belt is driven by a motor so that the upper surface side travels backward. The conveyor belt is driven at a speed that is slightly faster than the traveling speed of the harvester (for example, about 5 to 10% faster). A leaf collection container is installed below the rear end of the conveyor belt.

  In the leaf vegetable harvesting machine of the present application, as described in the examples described later, each leaf portion cut by a cutting blade (disjoint when the stem portion is cut) is scraped onto the front end portion of the conveyor belt. A brush roll for raising can be provided. The brush roll preferably has an outer diameter of about 30 to 40 cm and a length (for example, 100 cm) substantially equal to the width of the conveyor belt. The brush used for this brush roll is preferably a soft brush (one that does not damage the leaf part when the leaf part is scraped up). This brush roll is installed such that its lowermost surface is appropriately close to (or may be brought into contact with) the upper surface of the front end portion of the conveyor belt. The brush roll is rotated by a motor so that the lower surface of the brush roll moves backward. The driving speed of the brush roll is set so that its peripheral speed is slightly faster than the conveying speed of the conveyor belt.

  By the way, weeds are mixed with the cultivated leafy vegetables in the field (畝), and when cutting the entire width of the cocoon with a cutting blade at the same time, the leaf part and the weeds are cut simultaneously (harvested leafy vegetables). Weeds are mixed in the leaves).

Therefore, in the leaf vegetable harvesting machine of the present application, a plurality of weed retainer plates are provided at right and left intervals that can push down the weed growing between the rows of leaf vegetables grown in the field before the cutting blade reaches. ing. Each of the weed pressure plates has a width of, for example, about 4 to 5 cm, and has a length such that the tip end portion is located in front of the cutting blade and the rear end portion reaches rearward from the cutting blade installation position. In addition, each weed presser plate is installed so as to be in contact with the field scene at each inter-row position (a plurality of locations) of each leaf vegetable row (for example, 5 to 6 rows) having a width that can be cut by a cutting blade. In addition, each weed presser board can also be installed in the outer side of each leaf vegetable row at the left and right outer ends of the range to be cut by the cutting blade.

Each weed presser plate is slidably attached to the left and right (so that it can be adjusted to the left and right), and can be aligned with each inter-row position of the row of leaf vegetables grown on the field. ing.

Further, each weed presser plate is attached so as to be tiltable up and down, and the lower surface of each weed presser plate is in contact with the upper surface of the straw over the entire surface regardless of the tilt angle of the harvesting unit.

  In order to use the leaf vegetable harvesting machine of the present invention, the left and right traveling parts of the traveling device are arranged in a predetermined direction (if there is a cocoon in the field, arrange so as to straddle the cocoon), and each weed holding plate is Position each at a position corresponding to each row of leafy vegetables. When the cutting blade, the conveyor belt, and the brush roll (used in the embodiment) are respectively driven and the harvester is advanced by the traveling device, the stems of the leafy vegetables cultivated in the field (field scene) (Exposed) is cut sequentially with a cutting blade. When the leaf vegetable stem is cut, each leaf is separated into pieces. At this time, the conveyor belt is driven in a driven state (the brush roll used in the example rotates in the scraping direction). Each separated leaf portion immediately comes into contact with the front end portion (rotating in the scraping direction) of the conveyor belt and is scraped up onto the front end portion of the conveyor belt. Accordingly, most of the cut leaves are smoothly scraped up on the front end of the conveyor belt, and then sequentially fed on the conveyor belt to fall from the rear end of the conveyor belt into the collection container below. Be contained. A part of each cut leaf part (particularly small leaves) remains on the field without being placed on the conveyor belt, but the remaining amount that cannot be harvested is very small.

  And if this leaf vegetable harvester is used, each leaf vegetable (only a leaf part) of a farm field can be trimmed at the traveling speed by a traveling device.

  Further, when the leaf vegetable harvesting machine moves forward, each weed presser plate is in contact with the ground at a position in front of the cutting blade, so that each weed presser plate grows between each row of leaf vegetable rows. The weeds are pushed down (the weeds are kept pushed down until the cutting blades pass), and even if the cutting blades are pushed down and reach the position of the weeds, the cutting blades do not push down and cut the weeds.

  By the way, weeds also grow between the front and rear leaf vegetables, and the weeds before and after the leaf vegetables cannot be pushed down by the weed retainer plate (they remain standing), so they are cut together with the leaf and leaf portions when passing through the cutting blade. However, in the leaf vegetable harvesting machine of the present application, most of the weeds that grow between the strips of the leaf vegetable row can be pushed down with the weed retainer plate (with a cutting blade). Therefore, the amount of weed mixed in the collected leafy leaf portion can be reduced.

  In addition, the leaf part harvested with this leaf vegetable harvesting machine is suitable for use mainly for processing (mixture).

  The leaf vegetable harvesting machine of the present application has the following effects.

  (1) With this leaf vegetable harvesting machine, the leaves of leaf vegetables (for example, spinach) cultivated in the field can be harvested while the worker is standing, and the degree of fatigue is significantly greater than with manual harvesting operations. Can be reduced.

  (2) The leafy vegetables (leaves) can be harvested at the running speed of the running device (up to about 60m / min is possible, but about 20m / min to 40m / min can be operated in a stable state). It can be dramatically shortened.

  (3) The cutting blade has a length that can cut the stems exposed on the ground and simultaneously cut the leaf vegetables cultivated in the field by left and right multiple pieces at the same time. Can be harvested, and a large area of leafy vegetables can be harvested in a single run.

  (4) Since weeds that grow between the rows of leafy vegetables can be pushed down by the weed-holding plate before the cutting blade reaches, the amount of weed cut along with the leafy-leaf parts can be reduced, and the leafy vegetables are later The labor (working time) for removing weeds from the leaves can be greatly reduced.

(5) Since each weed retainer plate is slidably attached to the left and right, each weed retainer plate can be accurately aligned with each inter-row position of the leaf and vegetable row cultivated in the field.

(6) Since each weed presser plate is attached so as to be able to tilt up and down, the entire bottom surface of each weed presser plate always advances while in contact with the top surface of the straw regardless of the tilting angle of the harvesting unit ( The weed push-down function is ensured).

(7) Since only the leaf parts of leafy vegetables can be harvested, when the leaves are used for processing (for example, a mixture), no root cutting work is required like rooted leafy vegetables. It will be easy.

  The leaf vegetable harvesting machine of this embodiment will be described with reference to FIGS. 1 to 6. FIG. 1 is a side view of the leaf vegetable harvesting machine of this embodiment, FIG. 2 is a plan view of FIG. 4 is a partially enlarged view of FIG. 1, and FIG. 5 is a partially enlarged perspective view of a height adjusting device 6 used in the leaf vegetable harvesting machine of FIG. 1 to 4 show an example of use when harvesting leafy vegetables (spinach) Y cultivated on potato A, and FIG. 6 harvests leafy vegetables (spinach) Y cultivated on a flat field. A usage example is shown.

  In addition, as shown in FIG. 2, in the following description, front and rear are front and rear in the traveling direction of the leaf vegetable harvesting machine, and left and right are left and right as viewed from the front side in the traveling direction. Moreover, each dimension illustrated below is for making it easy to understand the leaf vegetable harvesting machine of the present application, and is not particularly limited, and can be freely changed in design as long as the requirements are satisfied.

  The leaf vegetable harvesting machine shown in FIGS. 1-5 is each of the traveling device 1, the body frame 2 installed on this traveling device 1, and each leaf vegetable (spinach) Y cultivated in the field (畝) A. A cutting device 3 for cutting the leaf portion Ya, a transport device 4 for feeding the cut leaf portions Ya, a scraping device 5 for scraping the cut leaf portions Ya onto the conveyor belt front end of the transport device, A basic structure is a weed presser plate 70 that pushes down the weeds Z growing between the strips of the leafy vegetables row.

  The traveling device 1 causes the leaf vegetable harvester to self-propel, and in this embodiment, a pair of left and right crawlers 11 are used for the traveling unit. The interval between the left and right crawlers 11 and 11 is set so that it can travel on both sides of the ridges B and B across the ridge A of the field. In the illustrated example (FIGS. 2 and 3), the collar width W is 90 cm, and the interval between the crawlers 11 and 11 is set to about 110 to 120 cm. In another embodiment, a pair of left and right wheels can be used as the traveling unit of the traveling device 1.

  The body frame 2 has a pair of left and right support columns 21 and 21 and a pair of left and right side plates 22 and 22 pivotally supported so as to be tiltable up and down with respect to the support columns 21 and 21.

  The left and right struts 21 and 21 are arranged with a slightly larger interval than the collar width W (FIGS. 2 and 3). In the example shown in the figure, the collar width W is 90 cm, while the interval between the columns 21 and 21 is set to about 100 to 110 cm.

  The lower ends of the columns 21 and 21 are supported by the shafts 12 and 12 of the drive wheels 11a and 11a of the crawlers 11 and 11, respectively. In this embodiment, the columns 21 and 21 are installed in a slightly forward tilted posture as shown in FIG.

  The leaf vegetable harvesting machine is equipped with a battery 10 serving as a power source for various driving sources (motors). In addition, a stand 7 for placing the collection container 8 is provided at the rear of the leaf vegetable harvesting machine. Further, a steering handle 9 is attached to the right rear portion of the leaf vegetable harvesting machine. Note that the battery 10, the stage 7, and the handle 9 are each attached to a column 21.

  A motor 13 serving as a power source of the traveling device 1 is installed on the upper side of the right column 21. The power from the motor 13 drives the drive wheels 11a and 11a of the crawlers 11 and 11 via a power transmission member 14 including pulleys (or sprockets) and belts (or chains). . The traveling speed during the harvesting operation by the traveling device 1 can be freely adjusted in a range from a low speed to, for example, about 60 m / min (in particular, a traveling speed of about 20 m / min to 40 m / min can be operated in a stable state). In another embodiment, an engine can be used as a drive source of the traveling device 1.

  Cover bodies 15 and 15 that cover a part of the power transmission member 14 are provided on the outer sides of the respective crawlers 11 and 11 in a posture parallel to the respective columns 21 and 21. Each of the cover bodies 15 and 15 also has a function as a reinforcing member for both the columns 21 and 21.

  The left and right side plates 22 and 22 of the body frame 2 have a considerable length in the front and rear (for example, the total length is about 100 cm). The side plates 22 and 22 are respectively provided with a transfer device 4, a scraping device 5 and a height adjusting device 6 which will be described later, and each of these devices (4, 5, 6) and the side plates 22, 22 are attached. And the harvest unit U is comprised.

  Although the detailed configuration of the harvesting unit U will be described later, the harvesting unit U is located at a position slightly rearward from the center of gravity of the whole of the harvesting unit U. A single shaft 24 is pivotally supported on the support frames 23 and 23, which are fixed to the intermediate height positions of 21 and 21 in a forward projecting state. Therefore, the harvesting unit U is tilted downward on the front side about the shaft 24 in the natural state.

  The side plates 22 and 22 of the harvesting unit U have a slightly larger interval (inner surface interval is about 105 cm) than the interval (90 cm) of the ridge width W. A conveyor belt 41 of the conveying device 4 is installed across the entire length of the side plate 22 between the side plates 22 and 22. The conveyor belt 41 has a width (about 100 cm width) that is slightly narrower than the distance between the side plates 22 and 22. The conveyor belt 41 is driven by a motor 42 attached to the left side plate 22 so that the upper surface side travels backward. The conveyance speed of the conveyor belt 41 is set slightly faster (for example, about 5 to 10% faster) than the traveling speed of the traveling device 1.

  The cutting device 3 is configured to drive the cutting blade 31 with a motor 32. As shown in FIG. 2, the cutting blade 31 has an upper blade and a lower blade in which a large number of protruding blade edges are arranged on the left and right. The cutting blade 31 has a left and right length (for example, 100 cm) slightly longer than the ridge width W (90 cm).

  The cutting blade 31 is attached to the lower surfaces of the front end portions of the left and right side plates 22 and 22 so that the cutting edge protrudes slightly (for example, about 2 to 3 cm) from the front end portion of the conveyor belt 41. The cutting blade 31 can shear the stem portion Yb of the leaf vegetable Y by causing the motor 32 to vibrate the upper blade and the lower blade in the left and right directions at high speed (for example, 1000 to 2000 times / min). It has become.

  A brush roll 51 is employed in the scraping device 5. The brush roll 51 has an outer diameter of about 30 to 40 cm and a length (about 100 cm) substantially equal to the width of the conveyor belt 41. The brush used for the brush roll 51 is a relatively soft one (one that does not damage the leaf Ya leaf).

  The brush roll 51 is installed by the left and right support arms 52, 52 so that the lowermost surface of the brush roll is close to the upper surface of the front end portion of the conveyor belt 41. That is, the base ends of the support arms 52 and 52 are pivotally supported on the side plates 22 and 22 by a single shaft 53, and the brush roll 51 can be freely rotated between the tip ends of the support arms 52 and 52. I support it. Further, as shown in FIG. 1, the support arms 52 and 52 are supported on the side plates 22 and 22 by a support frame 54 with a height adjusting mechanism (long hole), and the fixed height of each support frame 54 is set. By adjusting, the space | interval of the lowermost surface of the brush roll 51 and the upper surface of a conveyor belt front-end part can be adjusted now.

  The brush roll 51 is rotated by a motor 55 via a power transmission member (pulley and belt) 56 so that the lower surface side of the brush roll moves backward. The driving speed of the brush roll 51 is set so that the peripheral speed is slightly faster than the conveying speed of the conveyor belt 41. The brush roll driving motor can be shared by the conveyor belt motor 42.

  The harvesting unit U has a high height for use in a state where the cutting blade 31 is slightly separated (for example, about 1 to 2 cm) from the field scene (the upper surface of the ridge A in the first embodiment of FIGS. 1 to 4). A thickness adjusting device 6 is used.

  This height adjusting device 6 is provided on the outer surface near the front part of each of the left and right side plates 22, 22, and screw rods 62, 62 having ground plates 61, 61 at their lower ends are respectively moved up and down by handles 63, 63. It can be moved. For each of the ground plates 61, 61, as shown in an enlarged view in FIG. 5, a thin plate material (for example, a width of 2 to 3 cm) having a small length (for example, a length of about 10 to 15 cm) before and after is used. Has been. The front end of each ground plate 61 is inclined upward so that the ground plate 61 does not sink into the ground when traveling. Each ground plate 61 is pivotally supported by a pin 65 on a bracket 64 that is continuous with the lower portion of the screw rod 62 so that each ground plate 61 can tilt up and down. The brackets 64 on each side are connected by a single connecting rod 66 so that the bracket 64 does not rotate when the screw rod 62 is rotated.

  In the present application, the grounding plates 61 and 61 can be omitted because a weed pressing plate 70 (to be described later) that is substantially a grounding plate is used.

  In this embodiment, a plurality of (7 in the illustrated example) weed presser plates 70, 70,... That substantially function as a grounding plate and have a weed presser function to be described later are used in the height adjusting device 6. Yes.

  The main function of each weed presser plate 70, 70,... Is to push down the weed Z (see FIG. 4) growing between the strips of each leaf vegetable row cultivated in the field before the cutting blade 31 reaches, This is for preventing the weeds Z from being cut by the cutting blade 31, and details of the function will be described later.

  As shown in FIG. 5, each weed pressure plate 70, 70... Is a plate material having a length of about 30 to 35 cm and a width of about 4 to 5 cm. The front end portions of the weed pressing plates 70, 70,... Are also inclined upward so that the weed pressing plates 70, 70,.

  The weed pressing plates 70, 70,... Are attached to the connecting rod 66 so as to be slidable left and right (interval adjustment is possible). That is, as shown in FIG. 5, the same number (seven) of sliders 71 that slide with respect to the connecting rod 66 are fitted to the connecting rod 66 as the weed pressing plate 70. Brackets 72, 72,... Are respectively attached to the lower portions of the sliders 71, 71,..., And weed pressing plates 70, 70,. It is pivoted at 73 ... The tip of each weed pressing plate 70, 70... Protrudes considerably forward from the position of the cutting blade 31, and the tip of the weed pressing plate 70 advances forward from the cutting blade 31 when the leaf vegetable harvesting machine moves forward. It is like that. Further, the rear ends of the respective weed holding plates 70, 70,... Are located behind the installation position of the cutting blade 31 until the cutting blade 31 passes the position of the weed Z pushed down by the weed holding plate 70. Can keep the weeds Z pushed down.

  Each slider 71, 71... Can be fixed to the connecting rod 66 by a stopper 74 after adjusting the position of the weed pressing plates 70, 70.

  Below, the usage method of this leaf vegetable harvesting machine is demonstrated with the function of this weed pressing board 70. FIG.

  By the way, when this leaf vegetable harvesting machine is used, the leaf vegetable Y cultivated in the field is planted at a predetermined interval (for example, an interval of about 15 to 20 cm) in the front, rear, left and right directions. In particular, the columns are neatly aligned in the front-rear direction. In the example of planting in FIGS. 1 to 4, six ridges are planted on a ridge A having a width of 90 cm with a spacing of about 15 cm between the left and right. In addition, when the cultivated leaf vegetable Y is spinach, the root (stem portion Yb) of each leaf portion Ya is branched at a portion exposed from the field scene.

  In order to use this leaf vegetable harvesting machine, the crawlers 11 and 11 of the traveling device 1 are arranged so as to straddle the straw A in the field and to be parallel to the straw A (the crawlers 11 and 11 are the troughs B and B). Located). At this time, the front part of the harvesting unit U is lowered by its own weight, and each weed pressure plate 70, 70... Contacts the upper surface of the ridge A, but the harvesting unit U pivots at a position slightly shifted from the center of gravity to the rear side. Since it is only supported, the front part of the harvesting unit U can be easily lifted (tilted) manually. And in the state which has arrange | positioned each crawler 11,11 of the traveling apparatus 1 in the predetermined position, each weed presser board 70,70 ... is in the position corresponding to each row | line | column of the leaf vegetable row | cultivated to the ridge A. After adjusting, touch the surface. Next, the handles 63, 63 of the height adjusting device 6 are rotated to adjust the height so that the cutting blade 31 is separated from the ridge surface by a predetermined interval (1 to 2 cm). Since each weed presser plate 70, 70... Can be tilted up and down, the lower surface of each weed presser plate 70 contacts the upper surface of the straw over the entire surface regardless of the tilting angle of the harvesting unit U. .

  Then, when the motors (32, 42, 55) of the cutting device 3, the conveying device 4, and the scraping device 5 are respectively driven and the harvesting machine is advanced by the traveling device 1, the cutting blade 31 is moved as shown in FIG. The stem Yb of each leaf vegetable Y, Y.. When the stem portion Yb of each leaf vegetable Y is cut, the leaf portions Ya, Ya,... Are separated apart. At this time, the conveyor belt 41 moves forward in the driving state, and the brush roll 51 moves in the scraping direction. Due to the rotation, the separated leaf portions Ya, Ya,... Immediately come into contact with the front end portion of the conveyor belt 41 and are scraped up by the brush roll 51 onto the front end portion of the conveyor belt. Therefore, most of the cut leaf portions Ya, ya,... Are smoothly scraped up onto the front end portion of the conveyor belt, and are sequentially transported rearward on the conveyor belt 41 to the lower side from the rear end portion of the conveyor belt. Is dropped and contained in the collection container 8.

  Thus, when this leaf vegetable harvesting machine is used, only each leaf portion Ya can be collected automatically, and the harvesting operation can be performed at the traveling speed by the traveling device 1, so that the collection efficiency is higher than that of the manual operation. It will be much better. In addition, in the case where only the leaf portion Ya of the leaf vegetable Y is harvested, each leaf portion Ya immediately after being cut by the cutting blade 31 is sequentially scraped onto the front end portion of the conveyor belt by the brush roll 51. Even if the leaf portion Ya is cut and unstable, it can be collected with high probability. A part (particularly small leaves) of each cut leaf part remains on the field without being placed on the conveyor belt 41, but the remaining amount that cannot be collected is very small.

  By the way, as shown in FIG. 4, weeds Z often grow between leafy vegetables Y and Y, as shown in FIG. 4. When the cutting blade 31 cuts the weeds Z, the cut weeds are also conveyed by the conveyor. It is put on the belt 41 and a large amount of weed is mixed in the collected leafy leaf portion Ya (the subsequent weed removal work becomes troublesome).

  Therefore, in this embodiment, when the leaf vegetable harvester moves forward, the tip of each weed presser plate 70, 70... Advances forward from the cutting blade 31, but each weed presser plate 70, 70. Since each row of leafy vegetables is in sliding contact with the surface, the weeds Z grown between the rows are pushed down by the weed pressing plates 70, 70... Before reaching the cutting blade 31. (See FIG. 4). Therefore, the weed Z pushed down by the weed pressing plate 70 remains on the ridge A without being cut by the cutting blade 31. The weeds Z growing between the front and rear leaf vegetables Y and Y cannot be pushed down by the weed retainer plate 70 but are cut together with the leaf vegetables Y by the cutting blade 31 (mounted on the conveyor belt 41). The amount of mixed weeds can be reduced by the amount pushed down by the respective weed pressing plates 70, 70,...

  In FIG. 6, the case where the leaf vegetable Y cultivated on the flat ground with the said leaf vegetable harvester is harvested is shown. In this case, since the lower surface of the crawler 11 is the same height as the planting surface of the leafy vegetables Y, the height adjusting device 6 is adjusted so that the cutting blade 31 is close to the planting surface (the leafy plant stem portion Yb). To the position to cut. Other usage methods and functions of the respective devices are the same as those of the embodiment shown in FIGS.

It is a side view of the leaf vegetable harvesting machine of an example of the present application. It is a top view of FIG. It is a left view of FIG. FIG. 2 is a partially enlarged view of FIG. 1. It is a partial expansion perspective view of the height adjustment apparatus currently used for the leaf vegetable harvesting machine of FIG. It is a side view at the time of applying the leaf vegetable harvesting machine of FIG. 1 to the harvest of the leaf vegetable cultivated on flat ground.

  1 is a traveling device, 2 is a machine frame, 3 is a cutting device, 4 is a conveying device, 5 is a scraping device, 6 is a height adjusting device, 11 is a crawler, 21 is a column, 22 is a side plate, 31 is a cutting blade, 32 is a cutting blade motor, 41 is a conveyor belt, 42 is a conveyor belt motor, 51 is a brush roll, 55 is a brush roll motor, 70 is a weed presser plate, U is a harvesting unit, and A is a field ), Y is leafy vegetables, Ya is leaf parts, and Yb is stem parts.

Claims (1)

Leaf vegetables (Y) cultivated on a farm field in a state where a machine frame (2) is installed on the traveling device (1) and aligned at the front end position of the machine frame (2) at the front and rear with a predetermined interval. A cutting blade (31) capable of cutting the stem portion (Yb) of the blade is provided, and each leaf portion (Ya) cut by the cutting blade (31) is placed on the body frame (2) and conveyed to the rear side of the body frame A leaf vegetable harvesting machine with a conveyor belt (41)
The cutting blade (31), have a length capable of cleaving the leafy vegetables (Y) that are grown in the field the left and right plural rows by simultaneously,
The weeds (Z) that protrude forward from the cutting blade (31) and slide in contact with the field scene at the front position of the machine body frame (2) and grow between the strips of each leaf vegetable row are cut into the cutting blade (31 While a plurality of weed pressure plates (70) that can be pushed down before reaching)
Each of the weed pressure plates (70, 70,...) Is slidably attached to the left and right,
Each of the weed pressure plates (70, 70,...) Is attached so as to be tiltable up and down.
A leaf vegetable harvesting machine.

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