JP2019205370A - Harvesting work device - Google Patents

Abstract

To suppress clogging of head formation vegetable while improving yield of a head formation portion.SOLUTION: A harvesting work device comprises: a holding/transport device comprising a rhizome transport part for holding and transporting a rhizome part to a rear side, and a head formation transport part for holding and transporting the head formation part to a rear side; and a cutting unit 50 for cutting a rhizome of cabbage which is transported by the holding/transport device. The cutting unit 50 is arranged between the rhizome transport part and the head formation transport part, a blade 53 for cutting the rhizome part is formed on an upstream side end part of a transport direction Z of cabbage, and the cutting unit comprises: a flat-shaped blade member 51 extending along a lateral direction crossing the transport direction Z and having a long-length; and an oscillation mechanism 60 for oscillating the blade member 51 in a cross direction when the cabbage is transported by the holding/transport device.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a harvesting work apparatus that is attached to a traveling machine body and harvests headed vegetables.

  In Patent Document 1, for example, headed vegetables such as cabbage, lettuce and Chinese cabbage are pulled out at the front of the traveling machine body and then transported backward by the transport device while cutting the rhizome portion with the rotary blade of the cutting device. It describes a headed vegetable harvester that includes a harvesting work section (harvesting work device) that transports backward.

Japanese Patent No. 6063158

  In the harvesting work part of the headed vegetable harvester described in Patent Document 1, the cutting device for cutting the rooted part of the headed vegetable picked up is composed of a rotary blade, so that the headed vegetable is very easily cut. Yes. For example, when the headed vegetables are transported by being tilted to the left or right in the left-right direction orthogonal to the transport direction by the transport device, a part of the headed portion of the headed vegetables is forcibly cut by the rotary blade. For this reason, the yield of a head part falls.

  On the other hand, by changing the rotary blade of the cutting device to a flat fixed blade with the blade formed on the upstream side in the conveyance direction, even if the vegetable vegetable has been conveyed while tilting to the left or right by the conveyance device, the ball The lower part of the part on the downstream side in the conveying direction contacts the upper surface of the fixed blade. Accordingly, as the head vegetables are conveyed, the blade member relatively moves from the head portion to the rhizome portion while the upper surface of the blade member slides along the lower surface of the head portion. Then, when the blade member reaches the rhizome part, the cutting edge pierces the rhizome part. As a result, it becomes difficult for the fixed blade to cut a part of the head portion, and the yield of the head portion is improved. However, depending on the conveying speed of the headed vegetables, the size and hardness of the rhizome part, the rhizome part is not smoothly cut but caught on the fixed blade, and the headed vegetables are clogged in the conveying device.

  An object of the present invention is to provide a harvesting work apparatus that can suppress clogging of the headed vegetables while improving the yield of the headed part.

  The harvesting work device according to the present invention includes a transporting device that transports the headed vegetables extracted in front of the traveling machine body to the rear, and a cutting device that cuts the rhizome part of the headed vegetables transported by the transporting device. The transport device has a rhizome transport unit that sandwiches and transports the rhizome part rearward, and a ball transport unit that is disposed at the upper rear part of the rhizome transport unit and sandwiches and transports the head part rearward. The cutting device is disposed between the rhizome transport unit and the head transport unit, and a blade for cutting the rhizome part is formed at an upstream end in the transport direction of the headed vegetables transported by the transport device. A plate-like blade member extending in a long direction along the intersecting direction intersecting the conveying direction, and the blade member in an in-plane direction on the upper surface of the blade member when the vegetables are conveyed by the conveying device Oscillating machine And it has a door. In addition, the crossing direction here is an in-plane direction in a virtual plane including the transport direction and the left-right direction orthogonal to the transport direction in the in-plane direction.

  According to this, when the headed vegetables are conveyed by the conveying device, the blade member for cutting the rhizome part swings, so that the blade member can easily cut the rhizome part. For this reason, it becomes possible to suppress the clogged vegetables from being caught on the blade member and clogging the conveying device. In addition, by adopting a long flat blade member, the lower part on the downstream side in the transport direction of the head part is located on the upper surface of the blade member even if the head vegetables are transported while being tilted to the left or right by the transport device. Contact. Accordingly, as the head vegetables are conveyed, the blade member relatively moves from the head portion to the rhizome portion while the upper surface of the blade member slides along the lower surface of the head portion. Then, when the blade member reaches the rhizome part, the cutting edge pierces the rhizome part. As a result, it becomes difficult for the blade member to cut the head portion, and the yield of the head portion is improved.

  In this invention, it is preferable that the said blade member is comprised from the single blade shape in which the said blade was formed only in the said upper surface side. Thereby, even if the headed vegetables are transported while being tilted to the left or right by the transport device, the headed part is more difficult to cut. For this reason, the yield of the head portion is further improved.

  Further, in the present invention, the blade is formed in a convex shape protruding from the left and right end portions to the upstream side in the transport direction as it approaches the center of the intersecting direction, and the blade member is in plan view It is preferable that the central portion of the blade is disposed so as to overlap with the rhizome portion sandwiched and conveyed by the rhizome conveyance portion along the conveyance direction. Thereby, when cutting a rhizome part with the blade of a blade member, it becomes possible to cut a rhizome part with a sharp part of a blade. For this reason, it becomes difficult to produce a crack in the cut rhizome part.

  In the present invention, the blade member is supported so that one end portion in the intersecting direction can rotate around a rotation axis along an orthogonal direction orthogonal to the transport direction and the intersecting direction, and the swing mechanism is The other end of the blade member in the intersecting direction is preferably swung back and forth. As a result, the blade member swings back and forth by the swinging mechanism with its one end being the center of rotation when the headed vegetables are transported by the transporting device. With such a simple rocking mechanism configuration, it becomes possible to cut the rhizome part effectively by piercing the rhizome part with the pointed edge of the blade.

  According to the harvesting work device of the present invention, when the headed vegetables are transported by the transport device, the blade member for cutting the rhizome portion swings, so that the blade member can easily cut the rhizome portion. For this reason, it becomes possible to suppress the clogged vegetables from being caught on the blade member and clogging the conveying device. In addition, by adopting a long flat blade member, the lower part on the downstream side in the transport direction of the head part is located on the upper surface of the blade member even if the head vegetables are transported while being tilted to the left or right by the transport device. Contact. Accordingly, as the head vegetables are conveyed, the blade member relatively moves from the head portion to the rhizome portion while the upper surface of the blade member slides along the lower surface of the head portion. Then, when the blade member reaches the rhizome part, the cutting edge pierces the rhizome part. As a result, it becomes difficult for the blade member to cut the head portion, and the yield of the head portion is improved.

1 is a left side view of a cabbage harvester that employs a harvesting operation device according to an embodiment of the present invention. It is a left view of the front part of the clamping conveyance apparatus shown in FIG. It is the figure which looked at FIG. 2 from the direction of the white arrow. (A) is a left view of the cutting device periphery shown in FIG. 1, (b) is a figure which shows the positional relationship of the rhizome conveyance part and blade member which are shown in FIG. It is a schematic perspective view of the cutting device shown in FIG. FIG. 4 shows the cutting device shown in FIG. 4 when viewed from the direction of the white arrow, and (a) is a diagram showing a state in which the central portion of the blade of the blade member is arranged on the most upstream side in the conveying direction; (B) is a figure which shows the state by which the center part of the blade of the blade member was arrange | positioned most downstream in the conveyance direction. It is a conceptual diagram which shows the power transmission path | route from the engine mounted in the cabbage harvester of FIG. 1 to each part.

  Hereinafter, preferred embodiments of the present invention will be described.

  A cabbage harvesting machine 1 in which a harvesting apparatus according to an embodiment of the present invention is employed will be described with reference to FIGS. In the present embodiment, a cabbage harvester for harvesting cabbage will be described, but it may be a headed vegetable harvester for harvesting headed vegetables such as lettuce and Chinese cabbage other than cabbage.

  The cabbage harvesting machine 1 is a machine that harvests the cabbage V grown on the field as shown in FIG. 1 while traveling in the field. In this embodiment, the ridge U is formed in the field, and the cabbage V grows on the ridge U. As shown in FIG. 1, the cabbage harvester 1 includes a traveling machine body 2, a harvesting work device 5 for harvesting cabbage, and a preparation unit 90 where a preparation operation is performed. The traveling machine body 2 includes an engine 3, a driver seat 80 provided at a front portion of the traveling machine body 2, and a crawler traveling unit 85.

  A part of the configuration of the cabbage harvester 1 is provided in a pair of left and right. In the following symbols, those with L indicate the left side configuration of the left and right pair, and those with R indicate the right side configuration of the left and right pair. In addition, the front, rear, left, and right directions in the following description are directions viewed from a person facing the forward direction of the cabbage harvester 1. A direction perpendicular to both the conveyance direction X and the left-right direction of the cabbage V is defined as a Z direction (orthogonal direction) as shown in FIG. Of the Z directions, Z1 corresponds to the diagonally forward and upward direction, and Z2 corresponds to the diagonally backward and downward direction.

  The engine 3 is provided at a position below the driver seat 80 in the traveling machine body 2. The power of the engine 3 is transmitted to the hydraulic pump 4 as shown in FIG. Then, hydraulic pressure is supplied from the hydraulic pump 4 to a hydraulic motor (not shown) of the sandwiching and conveying device 40 described later, a hydraulic motor (not shown) of the traveling unit 85, and a hydraulic motor 61 of the cutting device 50 described later. 40, the driving | running | working part 85, and the cutting device 50 are driven. In the present embodiment, when the nipping and conveying apparatus 40 is driven, hydraulic pressure is supplied to the hydraulic motor 61 of the cutting apparatus 50, and a blade member 51 described later swings. As will be described later, the pair of scraping wheels 10 described later is driven by the power of the holding and conveying device 40. The power from the engine 3 may be transmitted to each part through a transmission mechanism including a belt, a pulley, a gear, a clutch, a chain, and the like. Further, a swing mechanism 60 (to be described later) of the cutting device 50 may be driven via a transmission mechanism constituted by a pulley, a belt, or the like that transmits power from the hydraulic motor of the holding and conveying device 40.

  The harvesting work device 5 holds the caulking wheel pair 10 that bites the cabbage V grown on the field, and the cabbage V that the raking wheel pair 10 bites conveys backward and upward along the conveying direction X in FIG. The conveyance apparatus 40 and the cutting apparatus 50 for cut | disconnecting the rhizome part V1 of the cabbage V conveyed by the clamping conveyance apparatus 40 are included.

  As shown in FIGS. 2 and 3, the pair of take-up wheels 10 includes wheels 10 </ b> L and 10 </ b> R each having a disk-shaped hub portion 10 a. The wheels 10L and 10R are arranged in the left-right direction. As shown in FIGS. 1 and 3, each of the wheels 10 </ b> L and 10 </ b> R is arranged in a posture along the conveyance direction X and along the left-right direction. A shaft 11 extending along the Z2 direction is fixed to the center of the disk of the hub portion 10a as shown in FIG. The lower end of the shaft 11 is fixed to the pulley 12. A plurality of protrusions 10b are formed on the periphery of the hub portion 10a. Each protrusion 10b protrudes to the outside of the hub portion 10a in the direction orthogonal to the shaft 11.

  As shown in FIG. 1, the sandwiching and conveying device 40 includes a rhizome transporting unit 20 that transports while holding the rhizome part V1 of the cabbage V, and a ball transporting unit 30 that transports while holding the heading part V0 of the cabbage V. doing. The rhizome transport unit 20 includes a hydraulic motor (not shown) supplied with hydraulic pressure from the hydraulic pump 4, a pair of left and right drive pulleys (not shown) driven by the hydraulic motor, driven pulleys 21L and 21R, and a transport direction X. Endless conveyor belts 22L and 22R extending along the axis. Each of the pair of left and right drive pulleys is disposed at the rear part of the rhizome transport unit 20 and is adjacent to each other in the left-right direction. The driven pulleys 21L and 21R are both arranged in the front part of the rhizome transport unit 20 and are adjacent to each other in the left-right direction. A conveyor belt 22L is wound around one drive pulley and driven pulley 21L. The conveyor belt 22L is pressed against the conveyor belt 22R by a plurality of pulleys 23. A conveyor belt 22R is wound around the other driving pulley and driven pulley 21R. The conveyor belt 22R is pressed against the conveyor belt 22L by a plurality of pulleys 23. A plurality of protrusions 22a are formed on each of the conveyor belts 22L and 22R. These protrusions 22a are arranged at equal intervals along the running direction of the belt, and protrude toward the outside of the belt circulation path. The rhizome portion V1 of the cabbage V is sandwiched and conveyed between the conveyor belts 22L and 22R.

  As shown in FIG. 2, a shaft 21 a is fixed to each of the driven pulleys 21 </ b> L and 21 </ b> R of the rhizome transport unit 20. The shaft 21a extends along the rotation axis of each of the driven pulleys 21L and 21R and extends in the Z2 direction. The lower end of the shaft 21a is fixed to the pulley 24. The pulley 24 is connected to the pulley 12 by an endless belt 25.

  When power is transmitted from the hydraulic motor of the rhizome transport unit 20 to the pair of drive pulleys, the drive pulley rotates, and accordingly, the transport belt 22L moves around the one drive pulley and the driven pulley 21L in the direction D1 in FIG. The conveyor belt 22R travels along the direction D2 in FIG. 3 around the other drive pulley and driven pulley 21R. When the conveyor belts 22L and 22R travel, the driven pulleys 21L and 21R rotate in conjunction with the belts 22L and 22R, and the rotational motion is transmitted to the take-up wheel pair 10 via the pulley 24, the belt 25, and the pulley 12. As a result, the wheel 10L rotates in the direction D3 in FIG. 3, and the wheel 10R rotates in the direction D4 in FIG.

  As shown in FIG. 1, the head transport unit 30 is disposed at the upper rear portion of the rhizome transport unit 20 and is separated from the rhizome transport unit 20 in the Z1 direction. As with the rhizome transport unit 20, the ball transport unit 30 includes a hydraulic motor, a drive pulley, a driven pulley, and a pair of transport belts 30L and 30R (see FIG. 4) wound around these pulleys. . Each of the transport belts 30L and 30R extends along the transport direction X. The pair of left and right conveying belts 30L and 30R are pressed by a plurality of pulleys toward the conveying belts 30L and 30R. Further, the pair of left and right conveying belts 30L and 30R are arranged while maintaining a predetermined interval in the left-right direction so as to sandwich the head portion V0. Similar to the rhizome transport unit 20, power from a hydraulic motor driven by the hydraulic pressure supplied from the hydraulic pump 4 is transmitted to the drive pulley. Thereby, the conveyance belts 30L and 30R travel along the conveyance direction X. In this manner, the head portion V0 of the cabbage V is transported in the transport direction X while being held by the head portion transport section 30.

  As shown in FIG. 4A, the cutting device 50 includes a blade member 51 disposed between the rhizome transport unit 20 and the ball transport unit 30, and a swing mechanism 60 for swinging the blade member 51. have. As shown in FIG. 5, the blade member 51 is composed of a flat plate member that is long along the left-right direction (the intersecting direction intersecting the transport direction X). Moreover, although the blade member 51 in this embodiment is comprised from stainless steel, you may be comprised from the other metal. As shown in FIGS. 5 and 6, two attachment holes 52 a and 52 b penetrating in the thickness direction (Z direction) are formed in each of the left and right end portions of the blade member 51. Two attachment holes 52a and 52b formed at each end of the blade member 51 are arranged side by side along the extending direction of the blade member 51 (the left-right direction in FIG. 5).

  As shown in FIG. 5, a blade 53 is formed at the front end portion (upstream end portion in the transport direction X) of the blade member 51. The blade member 51 of the present embodiment is constituted by a single blade shape in which a blade 53 is formed on the upper surface 51a. The blade 53 is formed in a convex shape that protrudes upstream in the transport direction X as it approaches the center from each end in the left-right direction (the extending direction of the blade member 51). In addition, as shown in FIG. 4B, the blade member 51 in the present embodiment has a conveyance direction X in which the central portion of the blade 53 passes through the center of the rhizome portion V <b> 1 of the cabbage V held and conveyed by the rhizome conveyance unit 20. Are arranged so as to overlap a center line G parallel to the center line G. For this reason, when cutting the rhizome part V1 with the blade 53 of the blade member 51, it becomes possible to cut the rhizome part V1 at the pointed part of the blade 53 (the central part in the left-right direction of the blade 53). Thus, by cutting the rhizome portion V1 at the pointed portion of the blade 53, the rhizome portion V1 is easily cut smoothly, and the cut rhizome portion V1 is less likely to be cracked. In addition, the blade member 51 should just be arrange | positioned so that the center part of the blade 53 may overlap with the rhizome part V1 conveyed by the rhizome conveyance part 20 along the conveyance direction X in planar view. That is, the blade member 51 is arranged so that the central portion of the blade 53 overlaps with a straight line parallel to the conveyance direction X passing through the rhizome portion V1 of the cabbage V sandwiched and conveyed by the rhizome conveyance unit 20 in plan view. That's fine. In this way, the same effect as described above can be obtained.

  As shown in FIG. 5, a pair of bent support plates 59 </ b> L and 59 </ b> R are attached to both ends of the blade member 51. Two through holes 59R1 are formed in the left end portion of the support plate 59R at a portion facing the two attachment holes 52b. Further, two through holes 59R2 are formed at the right end of the support plate 59R. The support plate 59R is fixed to a frame (not shown) of the holding and conveying device 40 by bolts and nuts (not shown) inserted through the two through holes 59R2. Further, the support plate 59R can rotate the right end portion of the blade member 51 by a bolt 58R and a nut (not shown) inserted through the rightmost through hole 59R1 and the attachment hole 52b at the rightmost end of the blade member 51. I support it. That is, the blade member 51 is supported so that the right end portion (one end portion) can rotate around the rotation axis along the Z direction.

  Two through holes 59L1 are formed in the right end portion of the support plate 59L at a portion facing the two attachment holes 52a. The support plate 59L also rotatably supports the left end portion of the blade member 51 by a bolt 58L and a nut (not shown) inserted through the leftmost through hole 59L1 and the leftmost attachment hole 52a of the blade member 51. doing. That is, the blade member 51 is also supported so that the left end portion (the other end portion) can also rotate around the rotation axis along the Z direction. A cylindrical portion 59L2 is formed at the left end portion of the support plate 59L. A guide shaft 40a extending in the Z direction from the frame of the holding and conveying device 40 is inserted through the cylindrical portion 59L2. Thereby, the support plate 59L is rotatably supported by the frame of the nipping and conveying apparatus 40 with the guide shaft 40a as the center of rotation. Further, a protruding piece 59L3 protruding leftward is formed at the left end of the support plate 59L.

  As shown in FIG. 4A, the swing mechanism 60 includes a hydraulic motor 61, a transmission mechanism 62, a rotating portion 63, a connecting portion 64, and the support plate 59L described above. The hydraulic motor 61 is fixed to the frame 40 b of the holding and conveying device 40. As shown in FIG. 4A, the transmission mechanism 62 is housed in the frame 40b, and includes a drive pulley 62a, a driven pulley 62b, and a belt 62c fixed to the shaft portion of the hydraulic motor 61. The belt 62c is stretched over the drive pulley 62a and the driven pulley 62b, and transmits the rotational force of the drive pulley 62a to the driven pulley 62b. The transmission mechanism 62 may have any configuration as long as the power of the hydraulic motor 61 can be transmitted to the rotating unit 63.

  The rotating portion 63 includes a shaft member 63a extending along the Z direction, a rotating plate 63b fixed to the upper end of the shaft member 63a, a protruding portion 63c protruding from the upper surface of the rotating plate 63b, and a case 63d. . The case 63d has a cylindrical shape and is erected on the frame 40b. In addition, the case 63d supports the shaft member 63a such that the shaft member 63a is disposed in parallel with the Z direction and is rotatable around the rotation axis in the Z direction. A driven pulley 62b is fixed to the lower end of the shaft member 63a. The rotating plate 63b has a circular planar shape, and the upper end of the shaft member 63a is fixed at the center thereof. The rotating plate 63b is rotatably supported on the upper surface of the case 63d. As shown in FIG. 6A, the protrusion 63c is arranged at an eccentric position on the upper surface of the rotating plate 63b.

  The connecting portion 64 has a bar shape extending along one direction. In the extending direction of the connecting portion 64, the front end portion is rotatably connected to the protruding portion 63c by a bolt 65, and the rear end portion is rotatably connected to the protruding piece 59L3 by a bolt 59L4 and a nut (not shown). ing.

  In such a swing mechanism 60, when hydraulic pressure is supplied from the hydraulic pump 4 to the hydraulic motor 61, the power of the hydraulic motor 61 is transmitted to the rotating portion 63 via the transmission mechanism 62. At this time, the shaft member 63a of the rotating portion 63 rotates around the rotation axis along the Z direction, and the rotating plate 63b repeats the state shown in FIG. 6A from the state shown in FIG. 6A. 6 Rotates in the direction of arrow E. Since the protrusion 63c is formed eccentrically with respect to the rotating plate 63b, and the support plate 59L is supported so as to be rotatable about the guide shaft 40a, the connecting portion 64 is moved back and forth with the rotation of the rotating plate 63b. The support plate 59L swings the left end portion of the blade member 51 in the front-rear direction. 6 (a) and 6 (b), the blade member 51 swings back and forth around the right end portion as the rotation center. 6A shows a state in which the central portion in the extending direction of the blade member 51 is arranged on the most upstream side in the transport direction X, and FIG. 6B shows the blade member 51. The state when the central part in the extending direction is arranged on the most downstream side in the transport direction X is shown.

  In the above configuration, when the cabbage harvester 1 is operated and the power from the engine 3 is transmitted to each part via the hydraulic pump 4, the cabbage harvester 1 harvests the cabbage V on the ridge U as follows. To go. The traveling unit 85 advances the cabbage harvester 1. As a result, as shown in FIG. 1, the scraping wheel pair 10 approaches the front cabbage V, and the cabbage V is taken in between the wheels 10L and 10R shown in FIG. The pair of take-up wheels 10 rotates in the D3 direction and the D4 direction in FIG. Along with this, the protrusions 10b of the wheels 10L and 10R also rotate. And the protrusion 10b stirs and pulls out the cabbage V when moving rearward from the diagonally left front part of the wheel 10L and the diagonally right front part of the wheel 10R in the range shown by the one-dot chain line in FIG. In this way, the cabbage V pulled out by the scraping wheel pair 10 is transported backward along the transport direction X by the rhizome part V1 by the rhizome transport part 20 and the head part V0 by the head transport part 30.

  When the cabbage V is transported by the sandwiching and transporting device 40, the blade member 51 swings back and forth by the swing mechanism 60. In the present embodiment, the conveyance speed for conveying the cabbage V by the nipping and conveying apparatus 40 is 0.2 m / s, but the conveyance speed is another value in the range of 0.1 m / s to 0.4 m / s. There may be. In the present embodiment, the blade member 51 is configured to be able to swing about 5 times forward and backward while the cabbage V is transported by 1 m by the sandwiching and transporting device 40, but the number of swings is 4 times. Other values in a range of ˜7 times may be used. In this embodiment, when the blade member 51 swings once, the swing distance of the central portion of the blade 53 is set to 2.5 cm, but the swing distance is in the range of 2 cm to 3 cm. Other values may be used.

  Here, the situation where the rhizome part V1 of the cabbage V transported by the sandwiching transport device 40 is cut by the blade member 51 of the cutting device 50 will be described. When the cabbage V transported by the sandwiching transport device 40 has been transported to the cutting device 50 without tilting back and forth and left and right, the central portion of the blade 53 of the blade member 51 pierces the rhizome portion V1. At this time, for example, when the rhizome part V1 is relatively hard, even if the rhizome part V1 is hardly cut by the blade member 51 only by the conveying force for conveying the cabbage V, the blade member 51 is Since the rocking mechanism 60 is swung back and forth, the pressing force of the blade member 51 (pressing force in the direction toward the upstream side in the transport direction X) is mainly applied to the rhizome portion 51, and the rhizome portion V1 is cut into the blade. The member 51 is smoothly cut. Thus, the head part V0 from which the rhizome part V1 has been cut off is transported to the preparation part 90 by the head transport part 30. The preparation unit 90 is waiting for an operator, and the heading part V0 is subjected to preparation work such as removal of outer leaves.

  On the other hand, when the cabbage V transported by the sandwiching transport device 40 is transported to the cutting device 50 in a state of being tilted to the left or right, for example, the transported cabbage V is in the transport direction X of the head portion V0. The lower part on the downstream side first contacts the upper surface 51 a of the blade member 51. Then, as the cabbage V is conveyed, the upper surface 51a and the blade 53 of the blade member 51 come close to the rhizome portion V1 while sliding along the lower surface of the head portion V0. That is, the blade member 51 moves relative to the cabbage V from the head portion V0 to the rhizome portion V1. This is because the blade 53 of the blade member 51 has a single-edged shape formed on the upper surface 51a side, so that the tapered portion of the blade 53 is easily slid along the lower surface of the head portion V0. Then, when the blade 53 reaches the rhizome portion V1, the cutting edge (the center portion of the blade 53) pierces the rhizome portion V1. Thus, similarly to the above, the rhizome part V1 is smoothly cut by the blade member 51, and the head part V0 from which the rhizome part V1 has been cut off is transported to the preparation part 90 by the head transport part 30. Thereafter, similar to the above, the head portion V0 is subjected to preparation work such as removal of the outer leaves.

  The harvesting work device 5 of the present embodiment is provided with a height adjustment mechanism (not shown) that adjusts the position of the blade member 51 in the Z direction. This height adjustment mechanism is configured to be able to move the pair of support plates 59L and 59R in the Z direction. Since the height of the blade member 51 can be adjusted in this way, the cutting of the head portion V0 by the blade member 51 can be suppressed. The height adjusting mechanism may have any configuration as long as the position of the blade member 51 in the Z direction can be adjusted.

  As described above, when the cabbage V is transported by the sandwiching and transporting device 40, the blade member 51 for cutting the rhizome portion V1 swings, so that the blade member 51 can easily cut the rhizome portion V1. . For this reason, it becomes possible to prevent the cabbage V from being caught by the blade member 51 and clogging the holding and conveying device 40. In addition, by adopting the long flat blade member 51, even if the cabbage V is conveyed to the left or right by the nipping and conveying device 40, the lower part on the downstream side in the conveying direction of the head portion V0 is the blade. It contacts the upper surface 51a of the member 51. Thus, as the cabbage V is conveyed, the blade member 51 moves relative to the rhizome portion V1 from the head portion V0 while the upper surface 51a of the blade member 51 slides along the lower surface of the head portion V0. Then, when the blade member 51 reaches the rhizome part V1, the cutting edge pierces the rhizome part V1. As a result, it becomes difficult for the blade member 51 to cut the head portion V0, and the yield of the head portion V0 is improved.

  Since the blade member 51 has a single-edged shape in which the blade 53 is formed only on the upper surface 51a side, even if the cabbage V is inclined and conveyed to the left or right by the nipping and conveying device 40, the headed portion V0 is maintained. It becomes harder to be cut. For this reason, the yield of the head portion V0 is further improved.

  The blade member 51 is supported such that the right end portion thereof is rotatable about a rotation axis along the Z direction, and the swing mechanism 60 swings the left end portion of the blade member 51 back and forth. Thereby, when the cabbage V is transported by the sandwiching and transporting device 40, the blade member 51 swings back and forth with the right end portion being the center of rotation by the swing mechanism 60. With such a simple swing mechanism 60, it is possible to effectively cut the rhizome portion V1 by piercing the rhizome portion V1 with the sharp portion of the blade 53.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. For example, the blade member may have a single blade shape in which a blade is formed only on the lower surface side. In this case, compared with the blade member 51, it becomes easier to cut a part of the head portion V0. However, since the blade member itself does not rotate and has a flat plate shape, the blade is lower than the head portion V0 compared to the rotary blade. It is easy to reach the rhizome part V1 while sliding along the surface. As a result, the yield of the head portion V0 is improved. The blade member may be a double-edged shape. In this case, similarly to the above-described embodiment, the blade easily reaches the rhizome portion V1 while sliding along the lower surface of the head portion V0. As a result, the yield of the head portion V0 is improved. Note that the blade member 51 described above is less likely to spill than the double-edged blade, and the blade is easier to sharpen, so that the maintainability is improved.

  Further, the blade 53 of the blade member 53 may be curved from the center portion to the left and right ends. Further, the blade 53 of the blade member 51 may not have its central portion protruding upstream in the transport direction X. In short, the blade 53 may be formed in parallel with the extending direction of the blade member 51.

  In the above-described embodiment, the blade member 51 is configured such that the right end portion is rotatably supported and the left end portion is swung back and forth by the swing mechanism 60. However, the swing mechanism is the blade member 51. As long as is the in-plane direction of the upper surface 51a, it may be swung in any direction. For example, the swing mechanism may swing the blade member 51 in the left-right direction. Even in this case, since the blade 53 can be swung left and right with the blade 53 piercing the rhizome portion V1, the root 53 V1 can be easily cut with the blade 53. Further, when the blade member 51 swings in a direction other than the front-rear direction and the left-right direction in the in-plane direction of the upper surface 51a, the blade member 51 is pressed against the rhizome part V1, and thus is the same as in the above-described embodiment. Further, the rhizome portion V1 is smoothly cut by the blade member 51. Further, the configuration of the swing mechanism 60 is not particularly limited as long as the blade member 51 can be swung in the in-plane direction of the upper surface 51a.

DESCRIPTION OF SYMBOLS 1 Cabbage harvester 2 Traveling machine body 5 Harvesting work apparatus 20 Rhizome conveyance part 30 Heading conveyance part 40 Nipping conveyance apparatus (conveyance apparatus)
50 Cutting device 51 Blade member 51a Upper surface 53 Blade 60 Oscillating mechanism G Center line V Cabbage (head vegetable)
V0 Heading part V1 Rhizome part

Claims (4)

In a harvesting work device including a transport device that transports the headed vegetables pulled out in front of the traveling machine body to the rear, and a cutting device that cuts the rhizome part of the headed vegetables transported by the transport device,
The transport device includes a rhizome transport unit that sandwiches and transports the rhizome part rearward, and a ball transport unit that is disposed at an upper rear part of the rhizome transport unit and sandwiches and transports the head part rearward.
The cutting device is disposed between the rhizome transport unit and the head transport unit, and a blade for cutting the rhizome part is formed at an upstream end in the transport direction of the headed vegetables transported by the transport device. A plate-like blade member extending in a long direction along the intersecting direction intersecting the conveying direction, and the blade member in an in-plane direction on the upper surface of the blade member when the vegetables are conveyed by the conveying device A harvesting operation device characterized by having a rocking mechanism for rocking the rocks.   The harvesting work device according to claim 1, wherein the blade member has a single blade shape in which the blade is formed only on the upper surface side. The blade is formed in a convex shape that protrudes to the upstream side in the transport direction as it approaches the center of the crossing direction from the left and right ends.
The said blade member is arrange | positioned so that the center part of the said blade may overlap with the rhizome part pinched and conveyed by the said rhizome conveyance part along the said conveyance direction in planar view. Harvesting work equipment as described in. The blade member is supported so that one end portion in the intersecting direction is rotatable around a rotation axis along an orthogonal direction orthogonal to the transport direction and the intersecting direction,
The harvesting work device according to claim 3, wherein the swing mechanism swings the other end portion of the blade member in the intersecting direction back and forth.

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