JP2007215409A - Crop stem mower - Google Patents

Abstract

A stem mower having a function of adjusting the cutting position of the stem T in accordance with the height of the stem T is provided.
A plurality of sandwiching and transporting devices 5 to 7 for sandwiching the upper part of a trunk T of a plant to be vegetated in a field and transporting it backward from the front part are provided in the vertical direction, and are provided below the front end portion of the sandwiching and transporting apparatus 7. The lower part of the plant stem T is cut with the first cutting blade 8, and the intermediate part of the stem T is cut with the second cutting blade 22 at the intermediate part of the holding and conveying device 6. A groove Tb is formed by cutting the plant stem T after cutting with the groove cutting blade 21 disposed on the upper rear side of the cutting blade 22. The nipping / conveying devices 5, 6, the cutting blade 22, and the groove cutting blade 21 are configured to be vertically adjustable with respect to the machine body 3.
[Selection] Figure 2

Description

  The present invention relates to a stem mower that cuts a trunk of a crop such as tobacco that grows in a field and harvests a trunk portion having leaves.

A machine having a configuration described in Patent Document 1 below is known as a stem mower that cuts a trunk of a crop such as tobacco that grows in a field and harvests a stem portion having leaves.
JP 2005-117955 A

The stem mower described in Patent Document 1 is a stem mower capable of appropriately grooving the trunk without moving the stem from side to side during grooving. However, the stem mower described in Patent Document 1 does not have a function of adjusting the cutting position according to the height of the stem. Since the height of the trunk of tobacco and other crops varies depending on the type and the timing of the work, it is necessary to adjust the cutting position of the trunk accordingly.
The subject of this invention is providing the stem mower provided with the function to adjust the cutting position of a trunk according to the height of the trunk of a crop.

  According to the first aspect of the present invention, a plurality of nipping and conveying devices (5 to 7) for nipping the upper part of the trunk T of a plant to be vegetated in the field and conveying the body (3) from the front part to the rear part are sequentially arranged in the vertical direction. A first cutting blade (8) for cutting the lower part of the plant trunk T is provided below the front end of the holding and conveying device (5-7), and above the first cutting blade (8). A second cutting blade (22) for cutting the intermediate portion of the plant trunk T is provided at the intermediate portion of the sandwiching and conveying apparatus (5 to 7), and above the rear side of the second cutting blade (22). A groove cutting blade (21) for forming a groove (Tb) by cutting into the plant stem T after cutting is provided, and the plurality of sandwiching and conveying devices (5, 6), the second cutting blade (22) and the groove This is a crop trunk cutter in which the cutting edge (21) is configured to be vertically adjustable with respect to the machine body (3).

  The invention according to claim 2 is that the plant transported by the sandwiching and transporting device (5 to 7) in the vicinity of the terminal portion of the sandwiching and transporting device (5 to 7) disposed in the forward direction of the machine body (3). The crop stem cutter according to claim 1, further comprising a guide guide (63) capable of selectively discharging the stem T in the left-right direction.

  According to a third aspect of the present invention, the groove cutting blade (21) is separated in the left-right direction with respect to the traveling direction of the machine body (3) toward the lower side with respect to the conveyance path formed by the nipping and conveying device (5-7). The upper rotary blade has a common rotary axis inclined so as to approach the left-right direction toward the upper side, and includes a large-diameter rotary blade (21a) and a small-diameter rotary blade (21b) having different diameters. A plate (21d) in the circumferential direction of the outer peripheral edge of the two rotary blades (21a, 21b) so as to be in a posture from the vicinity of the outer peripheral edge of (21a) to the vicinity of the outer peripheral edge of the small diameter rotary blade (21b). 3) A crop stem mower according to claim 1 or 2.

  According to invention of Claim 1, it is the structure which can adjust a vertical position of several clamping conveyance apparatus (5, 6), a 2nd cutting blade (22), and a groove cutting blade (21), The height of a plant Therefore, it is possible to reduce variations in the length of harvested crops and the position of grooving, and the efficiency of the trunk (T) collection work and the drying work is good.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, by providing the guide (63) capable of selectively discharging the plant trunk (T) in the left-right direction, the uncut side Since the trunk (T) is not dropped, the stem cutting operation can be performed efficiently, and the discharge side is the same, so that the trunk (T) can be easily recovered.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the large-diameter rotary blade (21a) and the small-diameter rotary blade (21b) having different diameters are provided on the lower side with respect to the conveyance path. Inclined so that it is farther in the left-right direction and closer to the left-right direction as it goes upward, it is provided coaxially, and from the vicinity of the outer peripheral edge of the large-diameter rotary blade (21a) to the vicinity of the outer peripheral edge of the small-diameter rotary blade (21b) A shape suitable for hanging a crop on a rope (R) or the like by providing a groove cutting blade (21) having a configuration in which a plate (21d) is arranged on the outer peripheral edge of the rotary blade (21a, 21b) in a posture. The groove (Tb) can be formed, and the work of drying the crop can be performed efficiently.

  Embodiments of the present invention will be described below with reference to the drawings. In the present specification, a cigarette trunk mower that cuts the trunk T of cigarettes will be described as an example. In addition, the direction in which the stem mower advances is referred to as the front, the direction to move backward is referred to as the rear, and the left side and the right side in the forward direction are referred to as the left and right, respectively.

A side view of the tobacco trunk mower is shown in FIG. 1, and a front view is shown in FIG.
The cigarette trunk mower has a pair of left and right front wheels 1 and 1 and a pair of left and right rear wheels 2 and 2 that are traveling devices, and is provided with a body 3 that travels over a saddle U and walks at the rear of the body 3 Provided with a steering section G provided with a steering wheel 4 and supporting a cigarette trunk T between the left and right wheels 1, 1, 2 and 2 in plan view of the body 3 on the front side of the walking steering handle 4 3, holding and conveying devices 5 and 6 having a pair of endless chains 55 and 56 that convey from the front to the rear, and the two-stage holding and conveying devices 5 and 6. A one-stage nipping and conveying apparatus 7 is provided for calling toward the two-stage nipping and conveying apparatuses 5 and 6.

  The tobacco trunk cutter further includes a first cutting blade 8 that cuts the base side of the tobacco stem T that is nipped and conveyed by the nipping and conveying devices 5 and 6, and a sizing of the stem T that is cut by the cutting blade 8. The second cutting blade 22 for carrying out and the stem T to be held and conveyed are provided with a groove cutting blade 21 for forming a groove Tb for hooking when the stem T is suspended after harvesting, and the holding and conveying devices 5 and 6 are Arranged from the front wheel arrangement side to the rear wheel arrangement side in a side view of the airframe 3, and provided so that the endless chain terminal portions of the holding and conveying devices 5, 6 are located on the rear side from the front end position of the rear wheel 2. It is said. The left and right ends of the walking steering handle 4 are provided so as to be positioned on the inner side in the left-right direction with respect to the left and right rear wheels 2 and 2. The front and rear wheels 1 and 2 may be crawlers.

  In the airframe 3, a first engine (not shown) is installed below the fuel tank 15 at the rear of the airframe 3, and a transmission case is provided on the front side of the first engine. The first engine and the transmission case are covered with a cover 16. Further, the first traveling transmission cases 9 and 9 extending downward are mounted on the left and right sides of the transmission case, and the second traveling transmission cases 10 and 10 are laterally mounted on one side of the lower portion of the first traveling transmission case 9 and 9. The rear wheel axles 2a and 2a are protruded from one side of the front end side of the second traveling transmission cases 10 and 10, and the rear wheels 2 and 2 are attached thereto. The rear wheels 2 and 2 are driven by the power of the first engine transmitted through the transmission mechanism in the transmission case and the transmission mechanisms in the first traveling transmission cases 9 and 9 and the second traveling transmission cases 10 and 10. It is configured to be rotated.

  The left and right rear wheels 2, 2 and the left and right front wheels 1, 1 can be moved up and down with respect to the machine body 3. The height of the working part W is provided so that it can be appropriately modified corresponding to the height of the ridge U. In this example, specifically, the left and right second traveling transmission cases 10, 10 to which the rear wheels 2, 2 are attached are connected to the lifting adjustment mechanisms 11, 11, and the second traveling is performed by operating the lifting adjustment mechanisms 11, 11. The transmission cases 10 and 10 are rotated and the rear wheels 2 and 2 are moved up and down. Specifically, the first arm 12, 12 is swingably provided on the pivotable attachment portion of the second traveling transmission case 10, 10 to the first traveling transmission case 9, 9. The front end portion of 12 and the support frame 14 provided on the left and right sides of the body 3 are connected by the telescopic rods 13 and 13.

The telescopic rods 13 and 13 are expanded and contracted by operating the handles 11a and 11a. When the telescopic rods 13 and 13 are operated to be shortened, the second traveling transmission cases 10 and 10 are raised and rotated. When the telescopic rods 13 and 13 are operated so as to be raised and the telescopic rods 13 and 13 are lengthened, the second traveling transmission cases 10 and 10 are rotated downward and the rear wheels 2 and 2 are lowered. If the left and right rear wheels 2 and 2 are set at different heights, stem cutting with sandwiching and conveying devices 5 to 7 and cutting blades 8 and 22 and a groove cutting blade 21 corresponding to the horizontal inclination of the field. The posture of the working unit W in the left-right direction can be corrected as appropriate.
In this example, the height of the front and rear wheels 1 and 2 is adjusted by manual operation. However, a sensor for detecting the ground posture of the airframe 3 and a hydraulic mechanism for driving the front and rear wheels 1 and 2 are provided. It can also be set as the structure adjusted automatically.

Left and right front wheels 1, 1 formed of idle wheels are attached to the front of the body 3 so that the height can be adjusted with respect to the body 3. In this example, a height adjusting member 29 is provided that can change the mounting height of the front wheel support members 1b, 1b provided with the front wheel axles 1a, 1a of the left and right front wheels 1, 1 with respect to the frame of the body 3. The member 29 includes a cylinder 29a and a rod 29b that can be inserted into and removed from the cylinder 29a, and the height position of the front wheel 1 is changed by inserting pins into a plurality of mounting holes respectively provided in the cylinder 29a and the rod 29b. can do. Note that the cylinder 29a is supported by frames 17L and 17R described later via connection frames 77 and 77, respectively.
The vertical height positions of the front and rear wheels 1 and 2 are adjusted so that the posture in the front-rear direction does not vary greatly when the vertical height of the stem cutting work part W is adjusted.

  The body 3 is provided with left and right frames 17L, 17R extending in the front-rear direction from the front wheel 1 side to the rear wheel 2 side. A stem cutting operation unit W including the holding and conveying devices 5 to 7 and the cutting blades 8 and 22 and the groove cutting blade 21 is detachably attached to the frames 17L and 17R. In addition, a pair of raising guides 19 and 19 are formed on the front portions of the left and right frames 17L and 17R. Along with this, the lower leaf of the crop that enters the clamping portion of the holding and conveying devices 5 to 7 is lifted from a wide portion of the pair of front guides 19 and 19, and the uppermost holding and conveying device 5 holds the lower leaf. It is provided not to. The rear ends of the frames 17L and 17R are connected to the support frame 14, and the front ends of the cover 16 that covers the transmission case and the like are fixed to the frames 17L and 17R.

The stem cutting work part W is configured as follows in this embodiment.
First, the pair of raising guides 19 and 19 guides the leaf portion of the tobacco crop planted in the field so that it is not pinched by the pinch conveying devices 5 to 7. The sandwiching and conveying apparatuses 5 to 7 are configured to be driven by the power of the first engine (not shown) that drives the machine body 3. Accordingly, the sandwiching and transporting devices 5 to 7 can be driven to rotate in proportion to the traveling speed, and the stem T to be cut is sandwiched and transported while maintaining the upright posture, and the cutting of the stem T by the first cutting blade 8 is appropriate. It is done in a posture, and the trunk cutting work can be performed well.

Next, the stem cutting work part W will be described with reference to a side view of FIG. 3 and a plan view of FIG.
A pair of driving sprockets 25 and 26 and driven sprockets 27 and 28, which are supported by the upper and lower frames 23 and 24, respectively, and are rotatably provided at the lower stage, are respectively included in the two-stage holding and conveying devices 5 and 6. The pair of endless feed chains 55 and 56 (see FIGS. 1 and 2) are supported by the upper and lower chain guides 47 and 48, respectively, and the drive sprocket 25 and the driven sprocket 27, the drive sprocket 26, and the driven sprocket 28. Each group is spanned.

  The upper and lower frames 23 and 24 are supported by four front and rear columns 30 whose lower ends are fixed to the frames 17L and 17R of the body 3, and the four frames 23 and 24 are interposed between the upper and lower frames 23 and 24. A cylindrical body 31 that is slidably fitted in the vertical direction is attached to the outside of the column 30 and the frames 32 and 33 that respectively support the upper and lower chain guides 47 and 48 are integrated with the upper and lower frames 23 and 24. The upper and lower frames 23 and 24 are integrally welded and fixed to the cylindrical body 31 so that the upper and lower intervals are unchanged.

  Each of the four struts 30 is provided with a plurality of height adjustment holes 30a, and the plurality of height adjustment holes 30a are provided in the same number corresponding to each other. Further, a hole 31a provided in the cylinder 31 whose upper and lower ends are welded and fixed to the upper and lower frames 23 and 24 and an adjustment hole 30a at an appropriate position of the support column 30 are matched to each other, and a pin (not shown) is shown here. The height of the upper and lower nipping and conveying devices 5 and 6 with respect to the field can be set by pinning and inserting the split pins into the pins protruding from the holes 30a and 31a.

  The driving sprockets 25 and 26 provided on the rear end side of the upper and lower frames 23 and 24 are supplied with engine power from a power input unit 35, respectively, and further provided with tension sprockets 39 and 40 via tension arms 36 and 37, respectively. It has been. Accordingly, both the upper and lower chains are endless chain shapes as shown in the plan view of FIG. 2, and the pair of chains can be driven to rotate while maintaining an extended state.

  The power input unit 35 is provided with a power input universal joint 42 and a pair of bevel gears 43 and 44, and one bevel gear 43 and the rotation shaft 46 of the drive sprocket 25 and 26 are directly connected.

  The lower frame 24 supports the second cutting blade 22 and the groove cutting blade 21 of the trunk T, and a support member 54 to which the driving units 50 and 51 for rotating are integrally supported. Has been. Pulleys 52 and 53 are respectively provided in the drive portions 50 and 51 of the cutting blade 22 of the trunk T and the groove cutting blade 21, and these are rotated by a belt from a driving system (not shown).

  Further, as shown in FIG. 2, the nipping and conveying device 7 at the front end of the machine body is supported by a machine frame 17 by a pair of chain guides (not shown), a drive sprocket 70 on the rear side, and two driven sprockets 71a and 71b on the middle and front sides. Thus, the pair of endless chains 57 are rotated by the sprockets 70, 71a, 71b. The drive sprocket 70 receives engine-side power through a pulley provided in the power input section.

  As for the nipping and conveying apparatus 7, the distance between the endless chains 57 becomes narrower toward the rear side with the front end of the machine body opening outward, and the same part as the distance between the pair of endless chains 56 of the nipping and conveying apparatus 6 partially overlaps in the vertical direction. The trunk T cutting blade 8 is provided below a region where the rear end portion of the endless chain 57 of the sandwiching and transporting device 7 and the front end portion of the endless chain 56 of the sandwiching and transporting device 6 overlap.

  As described above, the pair of endless chains 57 of the sandwiching and conveying apparatus 7 is widened forward when viewed from above, so that the trunk T can be guided to the center between the pair of endless chains 57. In particular, when the height of the ridge is high, the guide 19 becomes long, and becomes a resistance and pushes the crop forward. Therefore, there is an effect that the crops are hardly clogged between the endless chains 57 and 57.

  Further, the first cutting blade 8 of the trunk T is supported by the body frames 17L and 17R, but the height of the first cutting blade 8 with respect to the field can be changed by an appropriate configuration. Therefore, it is easy to bring the trunk T of the field to the center of the machine body at the tip of the sandwiching and conveying device 7, and the trunk T is cut with the first cutting blade 8 before the trunk T brought to the center is transferred to the sandwiching and conveying device 5. Thus, the trunk T after cutting can be transported rearward by the sandwiching and transporting devices 5 and 6.

  Further, the two-stage clamping and conveying devices 5 and 6 convey the trunk T while holding the trunk T in two upper and lower stages from the left and right sides with each pair of endless chains 55 and 56, so that the entire trunk T is left and right during conveyance. It is difficult to incline up and down and the trunk T can be grooved relatively easily.

  In addition, the base side of the stem T is first cut by the first cutting blade 8 with respect to the stem T to be sandwiched and conveyed, and the lower portion of the stem T cut thereafter is cut by the second cutting blade 22 and the stem with leaves. After aligning the length of T, the groove T can be grooved by the grooving blade 21, so that the driving load at the time of cutting by the first cutting blade 8 and the driving load at the time of grooving by the groove cutting blade 21 are reduced. Dispersed, trunk cutting and grooving can be done smoothly and lightly. Since the second cutting blade 22 has a function of aligning the length of the stem T with leaves, it may be called a sizing blade.

  Thus, since it is the structure which can adjust the vertical position of several clamping conveyance apparatuses 5 and 6, the 2nd cutting blade 22, and the groove cutting blade 21, since the working position according to the height of the plant can be ensured, it is harvested. Variations in the length of crops and grooving positions can be reduced, and the efficiency of collecting and drying the trunk T is good.

  Further, the groove cutting blade 21 is provided at an intermediate height between the installation heights of the chains 55 and 56 of the two-stage holding and conveying devices 5 and 6, and the second cutting blade 22 which is a dimensioning blade is held in the second stage. It arrange | positions under the chain 56 of the conveying apparatus 6. FIG. Therefore, even when the two-stage holding and conveying devices 5 and 6 are moved up and down, the distance between the groove cutting blade 21 and the second cutting blade 22 which is a sizing blade does not change, so that the harvested crops can be arranged at the time of drying. Easy to do.

  With the configuration of the present embodiment, the sandwiching and transporting device 7 having a pair of endless chains 57 extending outwardly in front is provided below the two-stage sandwiching and transporting devices 5 and 6, so the trunk T of the crop planted in the field Can be easily guided rearward by the sandwiching and conveying device 7, and the crop can be effectively harvested by cooperating with the trigger guide 19 having the function of lifting the leaves.

  Further, since the sandwiching and transporting device 7 and the two stages of sandwiching and transporting devices 5 and 6 are disposed rearward as the upper sandwiching and transporting device is seen in a side view, the inclination of the guide 19 can be relaxed.

  Further, since the first cutting blade 8 is provided below the holding and conveying device 7 so that the vertical position can be adjusted, its height can be provided slightly above the ridge U, and the cutting position of the trunk T can be easily determined. be able to. Further, by setting the cutting position of the stem T by the first cutting blade 8 and setting the cutting position of the stem T by the second cutting blade 22, the height of the stem Ta left on the ridge U and the height of the harvested stem T are set. Can be adjusted at will.

  Further, a connecting frame 18 is provided below the nipping and conveying device 6 so as to span the frames 17R and 17L. Due to the presence of the frame 18, it is possible to prevent the remaining trunk Ta remaining on the eaves U after the trunk is cut from being caught on the aircraft.

  The left and right connecting frame 18 is provided between the second cutting blade 22 and the first cutting blade 8 when the endless chains 55 and 56 of the upper two stages of nipping and conveying devices 5 and 6 are set to the lowest position. As a result, the remaining stem Ta can be prevented from hitting the groove cutting edge 21 and does not interfere with the conveyance of the trunk T.

  Further, the rear end of the endless chain 57 of the sandwiching and conveying apparatus 7 is arranged in front of the second cutting blade 22 and an unnecessary trunk T portion cut by the second cutting blade 22 which is a sizing blade is provided. It was made to fall downward toward the field.

  If a pair of conveying belts (not shown) having a front-lowering inclination in a side view are disposed in front of the nipping and conveying device 7 instead of the tobacco leaf raising guide 19, the leaves can be easily conveyed by the conveying belt. . When the guide 19 is used, if the leaf is forcibly guided backward by the guide 19, the leaf may stick to the guide 19 and the leaf may be torn off, or the leaf may not be torn off by the conveyor belt. .

Moreover, the structure of the raising guide 19 of the clamping conveyance apparatus 7 of the other Example of this invention is demonstrated.
Although not shown in the drawings, the guide 19 can be fixedly attached to the frame of the holding and conveying device 7 and can be configured as an integral unit. In addition, the guide 19 can be opened and closed according to the thickness of the tobacco stem T clamped by the trigger guide 19, so that the guide 19 can be reliably pushed according to the thickness of the stem T without pushing the stem T forward. The stem T can be caused by the guide 19.

Further, the cigarette leaf raising guide 19 is configured on the outer side of the machine body from the convex portion in plan view formed by the endless chain 57 of the holding and conveying device 7, and the leading end of the guide 19 is also formed on the holding and conveying device 7. It can arrange | position so that it may not come out to the clamping side of a trunk from endless chain 57. In this case, the leaf starting guide 19 can determine the position where the leaf starting can be started, so that the trunk T is securely held by the endless chain 57 of the holding and conveying device 7, and the stem T is held as much as possible by the endless chain 57, It can be brought to the center of 57.
In addition, the structure which cuts and conveys the trunk T of the crop by the guide 19 and the two-stage sandwiching and transporting devices 5 and 6 without providing the sandwiching and transporting device 7 may be adopted.

  As shown in the plan view of FIG. 5A (viewed from the lower side of FIG. 5B) and the side view of FIG. 5B, the groove cutting blade 21 is closer to the lower side with respect to the conveyance path. Two disk-shaped rotary blades 21a and 21b having a rotation axis 21c on the same axis that are inclined so as to be separated in the left-right direction and approach the left-right direction toward the upper side, and the two rotary blades 21a, 21b is arranged in parallel at a predetermined interval for grooving, and is an L-shaped plate (sometimes referred to as an L plate) attached to the large-diameter rotary blade 21a of the two rotary blades 21a and 21b. ) 21d. Saw blades are provided at the disk-shaped circumferential front ends of the two rotary blades 21a and 21b. In addition, the space | interval holding | maintenance of the rotary blades 21a and 21b is performed with the spacer which is not shown in figure.

  The L plate 21d is a side view from the plane fixedly supported in the vicinity of the outer peripheral edge of the large-diameter rotary blade 21a and the vicinity of the outer peripheral edge of the small-diameter rotary blade 21b from the vicinity of the outer peripheral edge of the large-diameter rotary blade 21a. 5A and 5B, each of the planes is provided with acute-angled blade edges 21d1 and 21d2 for cutting the trunk T as shown in FIG.

  Therefore, the L plate 21d can cut the trunk T obliquely with respect to the longitudinal direction of the trunk T, and a portion corresponding to the plate 21d is orthogonal to the longitudinal direction of the trunk T like a conventional groove cutting blade. Since the trunk T is not slashed from the direction, the grooving can be performed relatively smoothly, with the stem T remaining behind. Further, the L plate 21d is attached to the large diameter rotary blade 21a, the large diameter rotary blade 21a is preceded in the rotation direction of the L plate 21d to be grooved, and the inclination angle θ is provided toward the small diameter rotary blade 21b. Therefore, the large-diameter rotary blade 21a starts to cut the stem T first, and the groove Tb formed in the stem T is reduced. Further, a straight line portion 21d3 is provided behind the cutting edge 21d1 that is obliquely cut out of the L plate 21d.

If the stem T is raised by grooving, it will take less time when the stem T is hooked on the rope, but it is caused by grooving by providing a straight portion 21d3 behind the diagonally cut blade edge 21d1 of the L plate 21d. The tread can be removed, and the shape of the groove Tb becomes clean.
With the groove cutting blade 21 having such a configuration, a groove Tb (FIG. 7) having a shape suitable for suspending a crop on a rope or the like can be formed on the trunk T, and the operation of drying the crop can be performed efficiently.

The groove cutting edge 21 may be configured as shown in the plan view of FIG. 6A and the side view of FIG. 6B.
The groove cutting blade 21 ′ of the present embodiment is configured so that the two rotary blades 21a ′ and 21b ′ of the groove cutting blade 21 ′ hold the plane portions respectively and L-shaped plates (L plates) 21d1 ′ and 21d2 in side view. This is a configuration in which the ends of 'are butted together. The interval between the rotary blades 21a ′ and 21b ′ is maintained by a spacer (not shown).

  The L plates 21d1 ′ and 21d2 ′ are respectively provided with acute-angled blade tips 21d11 ′ and 21d21 ′ for cutting the stem T on the rotational direction front end side on the side in contact with the rotary blades 21a ′ and 21b ′. Unlike the L plate 21 of FIG. 5, the sharp blade edges 21d11 ′ and 21d21 ′ are shaped to be cut from a direction orthogonal to the longitudinal direction of the trunk T. However, the rotary blades 21a ′ and 21b ′ Since it is possible to cut away the details of the cut grooves, the grooves can be cut relatively smoothly.

  5 and FIG. 6, since the leading ends of the large-diameter rotary blades 21a and 21a ′ protrude from the bent portions of the L plates 21d, 21d1 ′ and 21d2 ′. A narrower groove Tb1 is formed at the bottom of the groove Tb formed in the trunk T shown in FIG. As shown in FIG. 7B, the stem T can be turned in the opposite direction, and the rope R can be inserted into the narrow groove Tb1 at the bottom of the groove Tb to suspend the stem T with leaves. In this case, even when the wind is strong such as a typhoon, the trunk T with leaves does not fall from the suspension rope R.

  Further, as shown in FIG. 8B, the end portions of the L plates 21d1 ′ and 21d2 ′ are not brought into contact with each other in a side view, but as shown in FIG. 8A, the L plates 21d1 ′ and 21d2 ′ Relatively narrow width by shifting the end portions so as not to face each other and making the interval l between the large-diameter rotary blade 21a ′ and the small-diameter rotary blade 21b ′ smaller than the interval L shown in FIG. Can be cut. In this way, the grooving width can be adjusted, so it can be used from thin ropes to thick ropes. Also, the narrower the interval, the better the fall on windy days.

  Further, as shown in the perspective view of the main part in FIG. 9A and the plan view of the main part in FIG. 9B, it is transported by the sandwiching and transporting devices 5 and 6 in the vicinity of the terminal portions of the sandwiching and transporting devices 5 and 6. A guide guide 63 that can selectively discharge the stem T of the plant in the left-right direction is provided. The guide guide 63 is rotatably supported in the left-right direction at the center portion of the rod 64 supported on the both sides of the cover 16 so as to be freely movable in the left-right direction. The guide guide 63 has a length at which the front end reaches between the pair of endless chains 55 and 56 of the holding and conveying devices 5 and 6 with the front slightly inclined downward, and the operator connects the rod 64 with the rear end connected thereto. It can be operated. An operator can operate the guide guide 63 by grasping the knobs 64a and 64a at both ends of the rod 64 and moving the rod 64 to the left and right. Therefore, the operator can selectively eject the stem T of the plant conveyed by the sandwiching and conveying devices 5 and 6 to the left or right of the tobacco stem mower via the guide guide 63.

  For example, as shown in FIG. 10, the trunk T that has been cut when cigarette trunk cutting is performed while meandering in the field, the trunk T is placed on the left or right cutting side R in the traveling direction that does not always interfere with the cutting operation. Can be guided by the guide guide 63 and dropped onto the field.

  The guide guide 63 is rotatably supported at a substantially central portion of the rod 64, and the rod central portion and the machine body are connected by a spring 65. When the knob 64a is pushed and pulled in the left-right direction, the spring 65 is connected. When the guide guide 63 is moved to either the left or right side beyond the fulcrum of the urging force, the guide guide 63 can maintain the moved state.

  In this way, the trunk T is not dropped on the uncut side of the tobacco stem cutter, so that the stem cutting operation can be performed efficiently, and the stem T can be easily recovered because the discharge side of the stem T is the same as the traveling direction of the tobacco stem cutter. It becomes.

  In addition, since the knob 64a is close to the operator, the guide guide 63 can be switched and operated together with various operations such as side clutch disconnection when the cigarette trunk mower turns, so that the guide guide 63 is not forgotten to be switched. Good sex.

  In the cigarette trunk mower of the present embodiment, as shown in the perspective view of FIG. 11A and the plan view of FIG. 11B, a storage stand on which the harvested tobacco trunk T can be placed obliquely at the rear center of the machine body 3 66 were linked. Since the connecting portion 66a of the storage base 66 to the work vehicle is pivotable about the connecting portion 66a as the central portion of the machine body, it is stored in a direction in which it can be easily operated from either side of the left and right direction of the airframe 3. The cigarette trunk T can be stored in the storage table 66 with the table 66 facing.

  Further, since the partition plate 67 is provided at the rear portion of the storage table 66, when the trunk T is stored in the storage table 66, the partition plate 67 serves as a guide guide plate for the trunk T, so that the storage is facilitated. Further, as shown in FIG. 11A, when the trunk T harvested from the storage base 66 to the ground or the like is lowered, the partition plate 67 and the side plate 66b of the storage base 66 connected to the partition plate 67 are opened outward. The partition plate 67 can be used as a shooter for dropping the trunk T. At this time, the workability is improved by wrapping the plurality of trunks T with a cloth or the like laid inside the storage table 66.

Another implementation of the invention is shown in the side view of FIG. As shown in FIG. 12, the endless chain 55 of the uppermost stage nipping and conveying apparatus 5 and the endless chain 57 of the lowermost stage nipping and conveying apparatus 7 in the three stages of nipping and conveying apparatuses 5 to 7 overlap in the vertical direction. Alternatively, the endless chain 56 of the holding and conveying device 6 and the endless chain 57 of the lowermost holding and conveying device 7 may be configured so as not to overlap in the vertical direction.
With the above configuration, the lowering range from the endless chains 55 and 56 of the upper two stages of the nipping and conveying devices 5 and 6 is increased, and the takeover can be easily performed.

  Another embodiment of the present invention is shown in the side view of FIG. In this embodiment, as shown in FIG. 13, among the four stages of nipping and conveying apparatuses 5 to 7 and 34, the three stages of nipping and conveying apparatuses 5 to 7 are arranged in a substantially horizontal direction as in the other embodiments. The first substantially horizontal sandwiching and transporting device 7 is the lowermost stage, and the other two substantially horizontal sandwiching and transporting devices 5 and 6 are arranged in the upper and lower stages at the same front and rear positions in a side view. This is a configuration in which a rearward and downward holding and conveying device 34 is provided between the device 7 and the other two substantially horizontal holding and conveying devices 5 and 6.

  Covers 68L and 68R attached to the column 30 are arranged above the two-stage substantially horizontal holding and conveying apparatuses 5 and 6. Depending on the variety of cigarettes, the lift may not be lifted by the lifting guides 19 and 19 so that the leaves are caught in the chain. Therefore, by providing the cover 68 during the transportation, the leaves are lifted at a higher position. And can prevent the leaf from being caught in the chain.

  The first cutting blades 8a and 8b are provided in two upper and lower stages below the leading substantially horizontal holding and conveying apparatus 7, and below the other two stages of the substantially horizontal holding and conveying apparatuses 5 and 6 below the holding and conveying apparatus 6 below. A second cutting blade 22 which is a sizing blade is provided in the groove, and a groove cutting blade 21 is provided in an intermediate portion between the two stages of substantially horizontal holding and conveying devices 5 and 6.

  The roots of the stem T are cut up and down by the first cutting blades 8a and 8b provided in the two upper and lower stages, and the stem T with leaves is conveyed downward while being pinched by the back-lowering pinch conveying device 34. Further, the leaves of the stem T with leaves are placed on the upper side of the endless chain 55 of the sandwiching and transporting device 5 by the cover 68 above the sandwiching and transporting device 5 on the upper side of the two stages of the substantially horizontal sandwiching and transporting devices 5 and 6. Can be transported.

  By cutting the root portion of the trunk T with the first cutting blades 8a and 8b provided in the two upper and lower stages at the upper and lower portions, the remaining trunk Ta remaining in the field is directed downward while being sandwiched by the rear-lowering sandwiching conveyance device 34. It does not interfere with the trunk T that is transported.

  Further, the rear descending nipping / conveying device 34 that overlaps the leading substantially horizontal nipping / conveying device 7 in the front-rear direction is located below the leading substantially horizontal nipping / conveying device 7. Only the trunk T is lowered while lifting the leaf with the guides 19 and 19 and the covers 68L and 68R, which is caused when the stem T with leaves is transported. The angle of the conveying device 34 can also be a steep inclination angle.

  In addition, a groove cutting blade 21 and a second cutting blade 22 that is a sizing blade are provided in the rear two-stage substantially horizontal holding and conveying devices 5 and 6, and cutting is performed downward while being held by the rear lowering holding and conveying device 34. By transporting the rear stem T with leaves and further transporting the stem T with the height of the stem T with the two rear horizontal holding and transporting devices 5 and 6, the trunk T can be grooved and dimensioned. become.

  The lap portions in the front-rear direction of the rear and lower nipping and conveying device 34 and the rear two substantially horizontal nipping and conveying devices 5 and 6 hold the rear two lower and substantially horizontal nipping and conveying devices 5 and 6 backward and nipped. The configuration is arranged above the transport device 34. In this manner, the rearward downward inclination of the rearward holding and conveying device 34 can be made steeper, and grooving can be performed at the portion of the trunk T as close as possible to the leaf.

  Moreover, it can also be set as the structure which can change the inclination-angle of the back descending clamping conveyance apparatus 34. FIG. In this case, since the lowering allowance L1 of the holding and conveying device 34 shown in FIG. 13 can be adjusted, the lowering width of the rear and lower holding and conveying device 34 is adjusted so that the portion of the stem T as close as possible to the leaf of the stem T with leaves is the sized portion. Can be cut as. For this reason, the length of the trunk T to be harvested can be shortened, the trunk after the leaves have been collected can be made smaller, and the amount of discharged matter can be reduced.

Further, the relationship between the distance L2 between the lower cutting blade 8b of the first cutting blade and the leading substantially horizontal holding and conveying device 7 and the lowering margin L1 of the trunk T is expressed as L2 ≧ L1.
By doing so, the remaining trunk Ta remaining in the field does not fall back and hit the nipping and conveying device 34, so that traveling can be performed smoothly and work efficiency is improved.

  Further, when the movement adjustment of the groove cutting blade 21 and the sizing blade 22 provided in the vicinity of the rear two-stage substantially horizontal holding and conveying devices 5 and 6 is possible, the height of the guide 19 and the cover 68 is changed. Without this, it is possible to adjust the lowering margin of the nipping and conveying device 34.

  INDUSTRIAL APPLICATION This invention can make the agricultural tractor versatile, and its usefulness is high.

It is a side view of the tobacco trunk mower of the Example of this invention. It is a top view of the tobacco trunk mower of FIG. It is a side view of the stem cutting operation part of the tobacco stem cutter of FIG. It is a top view of the stem cutting operation part of the tobacco stem cutting machine of FIG. It is the top view (FIG. 5 (a)) and side view (FIG.5 (b)) of the groove cutting blade of the tobacco trunk mower of FIG. It is the top view (FIG. 6 (a)) and side view (FIG. 6 (b)) of the groove cutting blade of the tobacco trunk mower of FIG. It is a figure which shows the groove | channel of the trunk T formed by the groove cutting blade of the tobacco trunk mower of FIG. It is a side view (Drawing 8 (b)) of the slot cutter of other examples of the tobacco stem mower of the present invention. It is the principal part perspective view (FIG.9 (a)) and principal part top view (FIG.9 (b)) of the tobacco rooting machine of this invention. It is a top view which shows the mode at the time of meandering running in the agricultural field of the tobacco rooting machine of this invention. It is a perspective view (Drawing 11 (a)) and a top view (Drawing 11 (b)) of a storage stand of a cigarette rooting machine of the present invention. It is a side view of the tobacco rooting machine of the other Example of this invention. It is a side view of the tobacco rooting machine of the other Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front wheel 1a Front wheel axle 1b Front wheel support member 2 Rear wheel 2a Rear wheel axle 3 Airframe 4 Handle 5, 6, 7 Nipping and conveying apparatus 8 First cutting blade 9 First traveling transmission case 10 Second traveling transmission case 11 Lifting adjustment mechanism 11a Handle 12 First arm 13 Telescopic rod 14 Support frame 15 Fuel tank 16 Cover 17L, 17R Frame 18 Connecting frame 19 Raising guide 21, 21 'Groove cutting edge 21c Rotating shaft center 21a, 21a' Large diameter rotating blades 21b, 21b 'Small-diameter rotary blades 21d, 21d1', 21d2 'L-shaped plates 21d1, 21d2 Cutting edges 21d3 Linear portions 21d11', 21d21 'Cutting edges 22 Second cutting blades (sizing blades) 23 Upper frame 24 Lower frames 25, 26 Drive Sprocket 27, 28 driven sprocket 29 height adjustment member 29a cylinder 2 b Rod 30 Post 30a Height adjustment hole 31 Cylindrical body 31a Cylindrical hole 32 Upper frame 33 Lower frame 34 Nipping and conveying device 35 Power input unit 36 Upper tension arm 37 Lower tension arm 39 Upper tension sprocket 40 Lower tension sprocket 42 Power input Universal joint 43, 44 Bevel gear 46 Rotating shaft 47, 48 Chain guide 50, 51 Drive part 52, 53 Pulley 54 Support member 55, 56, 57 Endless chain 63 Guide guide 64 Rod 64a Rod knob 65 Spring 66 Storage base 66a Connection part 66b Storage side plate 67 Partition plate 68 Cover 70, 71a, 71b Sprocket G Control part R Rope T Cigarette trunk Ta Remaining trunk Tb Groove U 畝 W Stem cutting work part

Claims (3)

  A plurality of sandwiching and transporting devices (5 to 7) for sandwiching the upper part of the trunk T of the plant to be vegetated in the field and transporting from the front part to the rear part of the machine body (3) are provided in order in the vertical direction. -7), a first cutting blade (8) that cuts the lower part of the plant trunk T is provided below the front end portion, and is located above the first cutting blade (8), and the holding and conveying device (5) The second cutting blade (22) for cutting the intermediate portion of the plant stem T is provided in the middle portion of ˜7), and the plant trunk T after cutting is provided on the rear upper side of the second cutting blade (22). A groove cutting blade (21) for forming a groove (Tb) by making a cut is provided, and the plurality of sandwiching and conveying devices (5, 6), the second cutting blade (22), and the groove cutting blade (21) are provided in the body. A crop trunk mower characterized in that the vertical position can be adjusted with respect to (3).   A plant trunk T conveyed by the nipping and conveying device (5-7) is selectively selected in the left-right direction in the vicinity of the terminal portion of the nipping and conveying device (5-7) disposed in front of the traveling direction of the machine body (3). The crop stem cutter according to claim 1, further comprising a guide guide (63) capable of being discharged.   The groove cutting blade (21) is separated in the left-right direction with respect to the traveling direction of the machine body (3) toward the lower side with respect to the conveyance path formed by the nipping and conveying device (5-7), and approaches the left-right direction toward the upper side. In the vicinity of the outer peripheral edge of the large-diameter rotary blade (21a), which is composed of a large-diameter rotary blade (21a) and a small-diameter rotary blade (21b) having a common rotation axis inclined in this manner and having different diameters. The plate (21d) is arranged in the circumferential direction of the outer peripheral edge portions of the two rotary blades (21a, 21b) so as to be in a posture toward the outer peripheral edge portion of the small-diameter rotary blade (21b). The crop stem mower according to claim 1 or 2.

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