JP6165099B2 - Root crop harvesting machine - Google Patents

Description

  The present invention relates to a traveling device, a body frame supported by the traveling device, a transportation device that is supported by the body frame, lifts and transports a root vegetable in a suspended posture from a field, sandwiching a root vegetable leaf portion, and a transportation device. The present invention relates to a root crop harvesting machine that is provided on the lower side and includes a cutting device that cuts a tail portion of root vegetables transported by a transport device.

  For example, the following patent document 1 describes a conventional root vegetable harvesting machine. The root crop harvesting machine described in Patent Document 1 includes a traveling device (“Crawler type traveling device [1]” in Patent Document 1) and a body frame (“Airframe frame [3] in Patent Document 1) supported by the traveling device. )). The root vegetable harvesting machine described in Patent Document 1 is supported by the machine frame, and transports the root vegetables in a suspended posture from the field while sandwiching the root vegetable leaf part (in Patent Document 1, “Transport Device [ 14] ") and a cutting device (" Root cutting device [30] "in Patent Document 1) that is located on the lower side of the conveying device and cuts the tail portion of the root vegetables conveyed by the conveying device. .

  According to such a root vegetable harvesting machine, unnecessary tail portions can be removed from the root vegetable efficiently.

Japanese Patent Laying-Open No. 2003-92912 (FIG. 1)

  However, since the relative position between the conveying device and the cutting device is fixed in the conventional technology, for example, when a large number of root vegetables are densely conveyed by the conveying device, between the conveying device and the cutting device. May cause clogging of root vegetables. In such a case, the operation of the root vegetable harvesting machine is interrupted, and it is necessary to remove the root vegetables clogged between the conveying device and the cutting device.

  In view of the above situation, it has been desired to provide a root vegetable harvesting machine that can suppress the occurrence of clogging of root vegetables between the conveying device and the cutting device.

The present invention includes a travel device, a body frame supported by the travel device, a transport device that is supported by the body frame, lifts and transports root vegetables in a suspended posture from a field, sandwiching a root vegetable leaf portion, And a cutting device that cuts a tail portion of the root vegetable conveyed by the conveying device, and the cutting device is retracted downward by the resistance of the root vegetable conveyed by the conveying device. An arm portion that is configured to be swingable around a swing axis that is transverse to the transfer device, and that supports the cutting device at a free end; and a lateral movement of the arm portion. And a lateral regulation part that regulates the above.

According to the present invention, when the cutting device for cutting the root part of the root vegetable receives the resistance of the root vegetable transported by the transport device, it can be retracted downward in the direction away from the transport device. Thereby, for example, even if a situation occurs where a large number of root vegetables are densely conveyed by the conveying device, the cutting device receives the resistance of the root vegetables and retracts downward, so between the conveying device and the cutting device, It can be passed smoothly without clogging root vegetables.
Therefore, according to this invention, generation | occurrence | production of the root vegetable clogging between a conveying apparatus and a cutting device can be suppressed.

In the present invention, the pre-Symbol arm portion, provided with a biasing section for biasing the said conveying apparatus, the cutting device, the resistance of the root vegetables being conveyed by the conveying device, with by the urging portion It is preferable to be configured to be retractable downward against the force.

According to the above configuration, the cutting device can be supported by the transport device so as to be swingable about the lateral swing axis while being biased toward the transport device side via the arm portion. And since the cutting device is urged by the urging unit so as to approach the conveying device side, when the cutting device receives the resistance of the root vegetables conveyed by the conveying device, the urging unit that acts on the arm unit Against the urging force of the oscillating member, oscillating around the oscillating axis, retracting downward in the direction away from the conveying device, the space between the conveying device and the cutting device is expanded, and the conveying device and the slicing device Root vegetables can be passed smoothly between and. When the resistance of the root vegetable to the cutting device disappears, the cutting device returns to the state close to the conveying device side by the urging force of the urging portion acting on the arm portion, and suitably cuts the tail part of the root vegetable conveyed by the conveying device. It automatically returns to a possible state.
Therefore, generation | occurrence | production of the root vegetable clogging between a conveying apparatus and a cutting device can be suppressed suitably, maintaining the state which can cut | disconnect the tail part of the root vegetables conveyed with a conveying apparatus.

  In the present invention, it is preferable that an upper restricting portion for restricting the swing upper limit position of the arm portion is provided.

  According to the above configuration, if the arm portion is in contact with the upper restricting portion by the biasing portion, the root portion of the root vegetable conveyed by the conveying device is cut by the cutting device at the interval between the conveying device and the cutting device. Can be maintained at an appropriate interval. Moreover, since the upper limit position of the arm portion is restricted by the upper restricting portion, the cutting device supported by the free end of the arm portion is prevented from being too close to the conveying device side, and the conveying device and the cutting device are During this, a space through which root vegetables can pass is suitably secured.

  In the present invention, it is preferable that a lower restricting portion for restricting a swing lower limit position of the arm portion is provided.

  According to the above configuration, since the lower limit position of the swing of the arm portion is restricted by the lower restricting portion, the cutting device supported by the free end of the arm portion is prevented from swinging too much downward, so that The contact of the cutting device can be suppressed.

  In the present invention, the cutting device rotates about a horizontal rotation axis, and a rotating blade that cuts a tail of a root vegetable conveyed by the conveying device and a tail of the root vegetable conveyed by the conveying device rotate. A guide portion that guides a lower part of the root vegetable so as to go to the blade, and the first member located on the left side of the root vegetable transported by the transport device is transported to the guide portion by the transport device. A second member located on the right side of the root vegetable, and configured such that the tail portion of the root vegetable conveyed by the conveying device enters the rotation locus of the rotary blade from between the first member and the second member. It is preferable that an adjusting portion capable of adjusting the distance between the first member and the second member is provided.

  According to the said structure, the space | interval between the 1st member and 2nd member which pinch | interpose the lower part of a root vegetable on either side can be adjusted by the adjustment part in the guide part of a cutting device. Thereby, the penetration depth of the root vegetables with respect to the rotation locus | trajectory of a rotary blade can be changed. Therefore, for example, even when the dimensions of the root vegetables differ from field to field, the interval between the first member and the second member is adjusted by the adjustment unit, and the depth of root vegetables entering the rotation locus of the rotary blade is adjusted. The tail of the root vegetable can be easily adjusted to a state that can be suitably cut with a rotary blade.

It is the whole left side view of a carrot harvester. It is a whole top view of a carrot harvester. It is sectional drawing of the front view of the periphery of a tail cutter. It is a top view of the periphery of a tail cutter. It is a left view of the periphery of a tail cutter. It is a right view of the periphery of a tail cutter. FIG. 4 is a front sectional view of the periphery of the tail cutter shown in a cross section different from FIG. 3. It is a left view of the periphery of a tail cutter when it becomes the rocking | fluctuation lower limit position of an arm part. It is a left view of the periphery of a tail cutter which shows rocking | fluctuation of the cutting device by resistance of the carrot.

Hereinafter, an embodiment which is an example of the present invention will be described with reference to the drawings.
As shown in FIG. 1 and FIG. 2, a pair of left and right traveling vehicles is configured to be self-propelled in a carrot harvester (an example of “root vegetable harvester”) that harvests carrot a (an example of “root vegetable”). Crawler traveling device 11 (an example of a “traveling device”), an aircraft frame 12 supported by the crawler traveling device 11, an engine 13 supported by the aircraft frame 12, and a boarding operation unit that is operated by a driver. 14, a harvesting unit 15 that extracts and conveys the carrot a, a sorting unit 16 that sorts the carrot a, and a collection unit 17 that collects the carrot a.

  A pair of left and right support frames 20 are connected to the body frame 12 so as to be swingable around a lifting axis P1 that faces the body side. Each support frame 20 is formed of a square pipe material extending in the longitudinal direction of the machine body. The body frame 12 and the support frame 20 are connected by a hydraulic lifting cylinder 21. The harvesting section 15 is supported on the support frame 20 via a pair of left and right connecting frames 22 and a pair of left and right relay frames 23. That is, the harvesting portion 15 connected to the support frame 20 can be moved up and down around the lifting axis P <b> 1 with respect to the machine body frame 12 by the expansion and contraction of the lifting cylinder 21.

  As shown in FIGS. 1 and 2, the boarding operation unit 14 is supported on the upper side of the body frame 12. The boarding operation unit 14 is provided with a driver seat 24 on which a driver is seated, an operation lever 25 for performing a lifting operation of the harvesting unit 15, and the like.

  As shown in FIGS. 1 and 2, the harvesting unit 15 includes a raising device 26, a soil unraveling blade 27, a conveying device 28, a tail cutter 29, and a leaf portion separating unit 30. .

  The raising device 26 includes a pair of left and right dividers 31 and a pair of left and right raising claws 32 that are driven to rotate endlessly in the vertical direction. The soil unraveling blades 27 are provided as a pair of left and right, and are configured to break into the soil on the side of the carrot a by vibrations entering the soil in the field.

  As shown in FIGS. 1 and 2, the transport device 28 is connected and supported to the body frame 12 by a connecting frame 22. The conveying device 28 is inclined upward so as to be positioned upward from the conveyance start end side toward the conveyance termination end side. The conveying device 28 is configured to pinch and pull out a leaf portion b of the carrot a planted in the field, and lift and convey the carrot a in a suspended posture from the field. The conveyance device 28 is provided with a pair of left and right extraction frames 33 and a conveyance belt 34 provided in each extraction frame 33. The pull-out frame 33 is arranged so as to rise obliquely backward from the front of the body toward the rear of the body. That is, the leaf portion b of the carrot a is pinched and pulled out by the pair of left and right conveying belts 34 and is conveyed obliquely rearward and upward toward the rear of the machine body.

  As shown in FIG. 5, the tail cutter 29 is configured to cut off the tail c of the carrot a that is transported by the transport belt 34 of the transport device 28. A specific configuration of the tail cutter 29 will be described later.

  As shown in FIG. 2, the leaf portion separation unit 30 is configured to cut and separate the leaf portion b of the carrot a that has been transported by the transport belt 34 of the transport device 28. The leaf portion separation unit 30 includes a pair of left and right leaf portion removal belts 35, a rotary cutting blade 36 that cuts the leaf portion b of the carrot a, and a chute 37 that discharges the separated leaf portion b. It has been.

  As the traveling machine travels, a pair of left and right dividers 31 of the raising device 26 are inserted into the left and right sides of the crop row of the carrot a planted in a row in the field. A leaf part b is rolled up and stood up. And while loosening the soil on the side of the carrot a planted in the field with the soil unraveling blade 27, the leaf portion b of the carrot a is sandwiched and pulled out by the transport belt 34 of the transport device 28 and directed toward the rear of the machine body. Transport by hanging. At this time, the tail portion c of the carrot a is cut by the tail cutter 29 during the conveyance of the conveyance belt 34. Then, in the vicinity of the conveyance end of the conveyance belt 34, the leaf portion b of the carrot a is transferred to the leaf portion removal belt 35, and the leaf portion b of the carrot a is cut and separated by the cutting blade 36. The separated leaf portion b falls from the chute 37 onto the discharge conveyor 38 and is dropped from the rear end portion of the discharge conveyor 38 to the field.

  As shown in FIGS. 1 and 2, the sorting unit 16 includes a sorting conveyor 39 that transports the carrot a along the longitudinal direction of the machine body, and auxiliary seats 40 that are arranged on the left and right sides of the sorting conveyor 39. It has been. The carrot a from which the leaf portion b has been removed in the leaf portion separation portion 30 is dropped onto the lateral feed roller 42 and conveyed to the lifting conveyor 41 by the lateral feed roller 42. The lifting conveyor 41 lifts and conveys the carrot a toward the conveyance start end of the sorting conveyor 39. The carrot a conveyed by the sorting conveyor 39 is sorted by the operator of the auxiliary seat 40, and the sorted carrot a is conveyed to the collection unit 17.

  As shown in FIGS. 1 and 2, the collection unit 17 includes a frame 43 that is supported by the body frame 12. The frame body 43 is configured to be able to hold a storage body 44 such as a cloth bag. By dropping the sorted carrot a conveyed from the sorting conveyor 39 onto the storage body 44 held by the frame body 43, the carrot a from which the tail portion c and the leaf portion b are removed is recovered in the storage body 44. It has come to be.

[Specific configuration of tail cutter]
Hereinafter, a specific configuration of the tail cutter 29 will be described in detail.
As shown in FIGS. 1 and 3 to 9, the tail cutter 29 has an arm portion 45, a cutting device 46, and a biasing portion 47 that biases the arm portion 45 toward the conveying device 28 side, Is provided. The tail cutter 29 is supported on the pull-out frame 33 of the transport device 28 by bolts, and is configured to swing integrally with the transport device 28 about the swing axis P2 that is lateral to the machine body. One end of the biasing portion 47 is connected to the stay 57 at the tip of the left arm 49, and the other end is connected to a mounting bracket 59 fixed to the left side surface of the pull-out frame 33 in the transport device 28.

[Arm part]
As shown in FIGS. 4 to 6, 8, and 9, the arm portion 45 is attached to and supported by a pair of support brackets 48 that are fixed to the transport device 28 in an obliquely downwardly lowered posture. The arm portion 45 is supported by the transport device 28 so as to be swingable around a swing axis P <b> 2 that is lateral to the machine body. The base end of the arm portion 45 is supported by the transport device 28 so as to be swingable around a swing axis P <b> 2 that is lateral to the machine body. A cutting device 46 is supported on the free end which is the lower end portion of the arm portion 45. As shown in FIGS. 3 to 5 and 7 to 9, the arm unit 45 includes a left arm 49 on the left side and a right arm 50 on the right side. The left arm 49 and the right arm 50 are connected by a laterally erected member 51 and are configured to swing integrally around the swing axis P2. The left arm 49 is disposed so as to protrude outward from the left drawing frame 33. The right arm 50 is disposed so as to enter between the left drawing frame 33 and the right drawing frame 33.

  As shown in FIG. 9, the cutting device 46 is configured to be able to retract downward against the urging force of the urging portion 47 by the resistance of the carrot a conveyed by the conveying device 28. Specifically, when the cutting device 46 receives the resistance of the carrot a transported by the transport device 28, the lower end portions of the left arm 49 and the right arm 50 cause the cutting device 46 and the transport device 28 to approach each other. It swings downward against the urging force, and the cutting device 46 is retracted downward.

  As shown in FIGS. 4 to 6, 8, and 9, the left and right pull-out frames 33 are located below the right arm 50 and correspond to the horizontal plate 52 (an “lower regulating portion”) that is slanted forward and downward. ). When the right arm 50 comes into contact with the plate 52, the swing lower limit position of the arm portion 45 is regulated.

  As shown in FIG. 3 to FIG. 5, FIG. 8, and FIG. 9, the regulating member 53 is disposed so as to be located above and laterally outward of the left arm 49. The regulating member 53 is supported by the left support frame 20. The restricting member 53 includes an attachment portion 54 attached to the left support frame 20 by welding or the like, an upper restricting portion 55 that restricts upward swinging of the left arm 49, and the left side direction of the left arm 49. A left lateral restricting portion 56 (an example of a “lateral restricting portion”) that restricts swinging in the lateral direction of the machine body is integrally provided. When the left arm 49 comes into contact with the upper restricting portion 55, the swing upper limit position of the arm portion 45 is restricted. When the left arm 49 comes into contact with the left lateral restriction portion 56, the movement of the arm portion 45 in the left lateral direction is restricted.

  As shown in FIG. 8, when the right arm 50 contacts the plate 52, the left lateral restricting portion 56 is not located on the left side of the left arm 49, and the left side of the left arm 49 is not on the left side. The space is open. For this reason, it is easy to perform maintenance such as attachment / detachment of the left arm 49.

  As shown in FIGS. 3, 4, and 7, the left arm 49 is located on the left side of the root vegetables transported by the transport device 28. The left arm 49 is located outside the aircraft. The left arm 49 is composed of a square pipe-like member. The right arm 50 is located on the right side of the carrot a conveyed by the conveying device 28. That is, the right arm 50 is located inside the aircraft. The right arm 50 is composed of a plate-like member.

  As shown in FIGS. 3, 4, and 7, the left side surface 58 of the right support frame 20 (an example of a “lateral regulating portion”) moves the right arm 50 in the right lateral direction of the body (the lateral side of the body). Is to regulate. When the right arm 50 contacts the left side surface 58 of the left support frame 20, the movement of the arm portion 45 in the right lateral direction is restricted.

  As described above, the arm portion 45 is restricted to move in the horizontal direction and swing along the vertical direction within a certain range.

[Cutting device]
As shown in FIGS. 1 and 5, the cutting device 46 is located below the conveyance start end of the conveyance device 28 and is configured to cut the tail c of the carrot a conveyed by the conveyance device 28. Yes. The cutting device 46 is supported by a lower end portion that is a distal end portion of the arm portion 45. The cutting device 46 is configured to be retracted downward by the resistance of the carrot a conveyed by the conveying device 28. The cutting device 46 includes a rotary blade 60, a guide portion 61, a first electric motor 62, and a second electric motor 63. That is, the rotary blade 60, the guide portion 61, the first electric motor 62, and the second electric motor 63 can swing integrally around the swing axis P2.

[Rotating blade]
As shown in FIGS. 5, 8, and 9, the rotary blade 60 rotates around the first horizontal rotation axis X <b> 1 (corresponding to a “rotation axis”), and the carrot conveyed by the conveyance device 28. It is comprised so that the tail part c of a may be cut | disconnected. The rotary blade 60 receives the driving force of the first electric motor 62 and is driven to rotate around the first rotation axis X1 along the direction opposite to the conveyance direction of the carrot a conveyed by the conveyance device 28. It is configured. In FIG. 5, the rotary blade 60 is driven to rotate counterclockwise around the first rotation axis X1. As shown in FIGS. 3 to 9, the rotary blade 60 is configured to rotate and cut off the tail c at the lower end of the carrot a conveyed by the conveying device 28 around the first rotation axis X <b> 1 in the horizontal direction of the machine body. ing. A pair of rotary blades 60 are provided, and each rotary blade 60 is integrally connected by a connecting portion 64. A pair of rotary blades 60 is provided below the transport start end side of the transport device 28 so as to be able to be driven and rotated about the first rotation axis X1 in the lateral direction of the machine body. The rotary blade 60 cuts the tail c of the carrot a in a suspended posture conveyed by the conveying device 28. The cut tail c is dropped on the field as it is.

  The first electric motor 62 for driving the rotary blade 60 shown in FIGS. 3, 4, and 7 is attached and supported on a right support 65 that is connected and fixed to the side surface of the right support frame 20. A connecting portion 64 that connects the pair of rotary blades 60 is connected to the first output shaft 66 of the first electric motor 62. The first electric motor 62 is configured to rotationally drive the pair of rotary blades 60 at a high speed so that the tail c of the carrot a can be cut.

[Guidance Department]
As shown in FIGS. 3, 4, and 7, the guide portion 61 is located on the outer peripheral side of the rotation locus of the rotary blade 60, and the tail portion c of the carrot a transported by the transport device 28 heads to the rotary blade 60. Thus, while guiding the lower part of the carrot a, it is comprised so that the penetration | invasion length to the rotation locus | trajectory of the rotary blade 60 of the lower end part of the carrot a may be controlled. The guide portion 61 includes a rotation guide member 68 (corresponding to “first member”) and a fixed guide member 69 (corresponding to “second member”). The tail c of the carrot a conveyed by the conveying device 28 enters the rotation locus of the rotary blade 60 from between the rotation guide member 68 and the fixed guide member 69.

  As shown in FIGS. 3, 4, and 7, the rotation guide member 68 and the fixed guide member 69 are paired on the left and right sides so as to be located on both the left and right sides in the passage of the carrot a conveyed by the conveyance device 28. Has been placed.

  The rotation guide member 68 is supported on the lower end portion of the left arm 49 via the adjustment bracket 71 so as to be rotatable around the second rotation axis X2. The rotation guide member 68 is configured to receive the driving force of the second electric motor 63 and to be rotationally driven around the second rotation axis X <b> 2 along the conveyance direction of the carrot a conveyed by the conveyance device 28. ing. In FIG. 5, the rotation guide member 68 is driven to rotate clockwise around the second rotation axis X2. The fixed guide member 69 is supported by the lower end portion of the right arm 50. The rotation guide member 68 is located on the left side of the carrot a conveyed by the conveying device 28 and is configured to rotate and guide the carrot a conveyed by the conveying device 28.

  As shown in FIGS. 3 and 7, the second electric motor 63 for driving the guide is attached and supported by the left support body 70 that is connected and fixed to the side surface of the left support frame 20. A rotation guide member 68 is connected and fixed to the second output shaft 72 of the second electric motor 63 via the connecting member 73 so as to rotate integrally.

  The second electric motor 63 shown in FIGS. 3, 4, and 7 is provided with a speed reduction mechanism. The second electric motor 63 is configured to rotationally drive the rotation guide member 68 so as to rotate at a peripheral speed higher than the conveyance speed by the conveyance device 28 along the same direction as the conveyance of the carrot a by the conveyance device 28. Has been. The peripheral speed by the second electric motor 63 is slightly smaller than the transport speed by the transport device 28 so that the lower end of the carrot a can be favorably guided to the rotary blade 60 in a state preceding the leaf part b. It is set to high speed.

  As shown in FIGS. 3, 4, and 7, the first rotation axis X <b> 1 that is the rotation center of the rotary blade 60 and the second rotation axis X <b> 2 that is the rotation center of the rotation guide member 68 are the same axis. It is supposed to be located on the mind.

  The fixed guide member 69 shown in FIGS. 3 to 6 is integrally connected and fixed to the front ends of a pair of front and rear left extending portions 76 extending from the right support 65 toward the left side by welding or the like. . The fixed guide member 69 receives the lower end portion of the carrot a conveyed in the suspended posture and guides it toward the cutting action position by the rotary blade 60. The fixed guide member 69 is located on the right side of the carrot a conveyed by the conveying device 28 and guides the carrot a conveyed by the conveying device 28.

[Specific configuration of rotating guide member]
As shown in FIGS. 3, 4, and 7, the rotation guide member 68 includes an annular guide rod 77 that is curved in a substantially annular shape, and is opposite to the passage of the carrot a from the annular guide rod 77. A plurality of bending guide rods 78 that are cantilevered outwardly at appropriate intervals in the circumferential direction are provided.

  As shown in FIGS. 3, 4, 5, and 7, the annular guide rod 77 is made of a round bar that is curved in an annular shape. The annular guide rod 77 is provided in a state of being concentrically positioned along the rotation locus of the rotary blade 60 at a radially outer position of the rotation locus of the rotary blade 60. Each bending guide rod 78 is formed of a curved round bar. Each bending guide rod 78 is extended in the opposite direction to the passage of the carrot a in the annular guide rod 77, and has a cantilever shape. The bending guide rod 78 of the rotation guide member 68 is inclined so as to move away from the second rotation axis X2 as it moves away from the rotary blade 60. The end 79 of the bending guide rod 78 farthest from the second rotation axis X2 is bent so as to be in a direction along the direction of the second rotation axis X2. That is, when the rotation guide member 68 is rotated, the end 79 is substantially horizontal with respect to the ground. Therefore, the end portion 79 of the rotation guide member 68 that is rotationally driven can make the carrot a planted in the field difficult to be damaged.

[Specific configuration of fixed guide member]
As shown in FIGS. 3, 4, 6, and 7, the fixed guide member 69 includes a guide guide rod 80 and a circumferential direction from the guide guide rod 80 toward the opposite side of the carrot a passage. Are provided with a plurality of linear guide rods 81 extending in a cantilevered manner at appropriate intervals. The guide guide rod 80 is configured to guide the lower end of the carrot a to the rotary blade 60 when the carrot a approaches the cutting action position by the rotary blade 60. The guide guide rod 80 is made of a round bar.

  As shown in FIGS. 3, 4, and 7, the linear guide rod 81 is cantilevered outwardly on the opposite side of the guide guide rod 80 from the passage of the carrot a. Each linear guide rod 81 is formed of a round bar like the guide guide rod 80. Each of the linear guide rods 81 is located on the opposite side of the guide guide rod 80 from the passage of the carrot a (on the right side when viewed from the direction of travel of the machine body). It is fixed and extended in a cantilevered direction.

  As shown in FIGS. 3 and 7, the annular guide rod 77 of the rotation guide member 68 and the guide guide rod 80 of the fixed guide member 69 are arranged at an interval in the body width direction. The lower end portion of the carrot a enters the rotation locus of the rotary blade 60 through a gap formed between the annular guide rod 77 and the guide guide rod 80.

[Adjustment section]
As shown in FIGS. 4 and 7, an adjustment portion 85 is provided that can adjust the distance between the rotation guide member 68 and the fixed guide member 69. The adjustment unit 85 is provided on the rotation guide member 68 side. The adjustment portion 85 is provided with two transverse long holes 87 opened in the adjustment bracket 71. The two long holes 87 are distributed and arranged in a direction perpendicular to the axial direction of the first rotation axis X1 with the first rotation axis X1 serving as the rotation center of the rotary blade 60 as the center. Each elongated hole 87 has a longitudinal direction in the direction along the first rotation axis X1 that is the rotation center of the rotary blade 60. The distance between the fixed guide member 69 and the rotation guide member 68 can be adjusted by adjusting the attachment position of the rotation guide member 68 to the adjustment portion 85 in the two elongated holes 87 in the lateral direction. Thereby, the lateral width of the passage of the carrot a can be adjusted flexibly. Further, it is possible to easily align the first rotation axis X1 that is the rotation center of the rotary blade 60 and the second rotation axis X2 that is the rotation center of the rotation guide member 68.

[Another embodiment]
Another embodiment of the present invention will be described below. The above embodiment and each of the following embodiments can be appropriately combined as long as no contradiction occurs.

  (1) In the above-described embodiment, an example in which the cutting device 46 is supported by the conveying device 28 is shown as an example, but the cutting device 46 is not supported by the conveying device 28, and for example, the machine frame 12 It may be supported by.

  (2) In the above-described embodiment, the arm portion 45 that supports the cutting device 46 swings around the swing axis Y1, but is not limited thereto. Other cutting devices that are slidable in the vertical direction with respect to the conveying device 28 may be used.

  (3) In the above embodiment, when the right arm 50 abuts on the plate 52, the left lateral restricting portion 56 that is not located on the left side of the left arm 49 is shown as an example, but the present invention is not limited thereto. . For example, when the right arm 50 is in contact with the plate 52, the left arm 49 extends to the left side of the left arm 49, and extends to the left side of the left arm 49 over the entire swing range of the left arm 49. It may be another left side restricting portion located in the direction.

  (4) In the above-described embodiment, an example in which the adjustment unit 85 is provided is shown, but the present invention is not limited to this, and the adjustment unit 85 may not be provided.

  (5) In the above embodiment, left and right expressions are used, but a structure in which left and right are opposite may be used.

  The present invention can be used for other root vegetable harvesters such as a radish harvester and an onion harvester in addition to a carrot harvester.

11: Crawler traveling device (traveling device)
12: Airframe frame 28: Conveying device 45: Arm unit 46: Cutting device 47: Biasing unit 52: Plate (lower regulating unit)
55: Upper regulating part 56: Left lateral regulating part (lateral regulating part)
58: Left side (lateral regulation part)
60: Rotating blade 61: Guide portion 68: Rotating guide member (first member)
69: Fixed guide member (second member)
85: Adjustment unit P2: Oscillation axis X1: First rotation axis (rotation axis)
a: Carrot (root vegetables)
b: leaf c: tail

Claims (5)

A traveling device;
A body frame supported by the traveling device;
A transport device that is supported by the body frame and that lifts and transports the root vegetables in a suspended posture from the field by sandwiching the leaf parts of the root vegetables;
A cutting device that is located on the lower side of the transport device and that cuts the tail of root vegetables transported by the transport device; and
The cutting device is configured to be retractable downward by the resistance of the root vegetables transported by the transport device ,
An arm portion supported so as to be swingable about a swing axis that is lateral to the transport device, and supporting the cutting device at a free end;
A root vegetable harvesting machine provided with a horizontal restriction part that restricts movement of the arm part in the horizontal direction . The front Symbol arm, urging portion for urging the said conveying apparatus is provided,
The root vegetable harvester according to claim 1, wherein the cutting device is configured to be retracted downward against the urging force of the urging unit by resistance of the root vegetable conveyed by the conveying device. Root vegetables harvesting machine according to claim 1 or 2 on the restricting portion is provided for restricting the swinging upper limit position of the arm portion. The root vegetable harvester according to any one of claims 1 to 3, further comprising a lower restricting portion that restricts a lower limit position of swinging of the arm portion. A rotary blade that rotates around a rotational axis that is horizontally directed to the cutting device to cut a tail portion of a root vegetable conveyed by the conveying device, and a tail portion of a root vegetable conveyed by the conveying device is directed to the rotating blade. And a guide section for guiding the lower part of the root vegetable,
The guide unit includes a first member located on the left side of the root vegetable conveyed by the conveying device, and a second member located on the right side of the root vegetable conveyed by the conveying device,
From between the first member and the second member, the root part of the root vegetables transported by the transport device is configured to enter the rotation trajectory of the rotary blade,
The root vegetable harvester according to any one of claims 1 to 4 , further comprising an adjustment unit capable of adjusting an interval between the first member and the second member.

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