Root crop harvester

Abstract

To provide a root crop harvester which can easily develop and store a placement table, and which can easily lower a storage bag onto a field.SOLUTION: A root crop harvester 1 includes: a machine body 2 supported on a travel device; and a placement table 10 for placing a storage bag storing the crop delivered by a belt delivery mechanism. The placement table 10 includes: a placement table body 110 for placing the storage bag; and a storage part which can store the placement table body 110 on the machine body 2 side. The storage part is provided below a selection work floor 23. The placement table body 110 is connected to the storage part by a telescopic slide rail, and configured to be freely stored in a storage space of the storage part. Further, a drawer part is provided in which a roller slider plate 151 having a plurality of rollers on a top face is stored in a drawing manner. The drawer part is configured to take an inclined state downward toward a rear side by a rearward drawing the roller slider plate 151.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a root vegetable harvester that pulls out and harvests root vegetables such as radishes and carrots growing in a farm field. [Background technology]

[0002] Conventionally, root vegetable harvesters of this type are known, for example, from those described in Patent Documents 1 and 2 below, in which an operator rides on the machine and pulls out and harvests root vegetables such as radishes and carrots growing in a field.

[0003] A conventional root vegetable harvester, as described in Patent Documents 1 and 2 below, for example, includes a harvesting device that pulls root vegetable crops such as radishes and carrots from a field and cuts off their stems and leaves, a storage section that stores the harvested root vegetable crops, and a belt conveying mechanism that transports the root vegetable crops whose stems and leaves have been cut off through a sorting work area where a sorter performs sorting work, and then to the storage section.Furthermore, a platform is provided on the side of the machine body for placing storage bags (so-called flexible container bags) that store the root vegetable crops transported by the belt conveying mechanism.

[0004] Furthermore, Patent Document 3 discloses a root vegetable harvester equipped with a platform that can be deployed to the outside of the machine when in use and stored inside the machine when not in use, making it possible to make the machine more compact by storing the platform when not in use. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2020-14442 [Patent Document 2] Patent Publication No. 2021-03086 [Patent Document 3] Japanese Patent Application Laid-Open No. 2023-37949 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the conventional root vegetable harvester described in Patent Document 3 requires complicated operations for unfolding and storing the mounting table, resulting in reduced work efficiency. Furthermore, in recent years, with the aging of agricultural workers as a backdrop, there is a need to reduce and simplify the workload involved in the work of lowering the storage bags placed on the mounting table into the field.

[0007] Therefore, an object of the present invention is to provide a root vegetable harvester that solves such problems, allows the platform to be easily deployed and stored, and allows the storage bag to be easily lowered into the field. [Means for solving the problem]

[0008] In order to achieve the above object, the first invention is: a machine body supported by a running device; a harvesting device for harvesting crops at one of the left and right ends of the machine body; The harvesting device includes a raising unit that raises the stems and leaves of the crops, a pulling and conveying unit that clamps the stems and leaves raised by the raising unit, pulls them out of the field, and conveys them to the rear of the machine body, a belt conveying mechanism that conveys the crops supplied from the pulling and conveying unit from one left or right end side to the other left or right end side of the machine body, and a platform on which to place storage bags that contain the crops conveyed by the belt conveying mechanism, A root vegetable harvester having an operation floor on which a pilot's seat for a pilot is provided and a sorting operation floor on which a sorting operator's seat for a sorter is provided, the mounting base includes a mounting base main body on which the storage bag is placed, and a storage section capable of storing the mounting base main body on the aircraft body side, The storage unit is disposed below the sorting operation floor, The mounting table main body is connected to the storage unit by an extendable slide rail and is configured to be freely stored in the storage space of the storage unit; and a drawer section that accommodates a roller slider plate having a plurality of rollers on an upper surface thereof so as to be freely drawn out; The root vegetable harvester is configured so that the drawer section can be set to an inclined posture that descends toward the rear by pulling the roller slider plate rearward.

[0009] According to the first invention, the platform can be easily unfolded and stored by operating the platform body, which is connected to the storage section by an extendable slide rail, and the storage bag can be easily lowered into the field by the roller slider plate.

[0010] The second invention is characterized in that, in addition to the configuration of the first invention, the platform body has a loading surface on which the storage bag is placed, and a conveying belt is provided on the loading surface to transport the storage bag rearward.

[0011] According to the second invention, in addition to the configuration of the second invention, the storage bag is transported to the roller slider plate by a conveying belt that transports the storage bag rearward, and as a result, the storage bag can be lowered into the field extremely easily without manual labor.

[0012] The third invention, in addition to the configuration of the second invention, When a predetermined condition is met, the lifting cylinder is automatically extended to lift the storage bag hung on the hook of the hanger arm from the state where it is placed on the table and move it upward a predetermined distance.

[0013] According to the third aspect of the present invention, in addition to the effects of the third aspect of the present invention, The ground lifting function allows the storage bag to be lifted upwards, improving the balance of the machine when necessary and enhancing safety and workability. [Effects of the Invention]

[0014] According to the present invention, a root vegetable harvester can be provided in which the mounting table can be easily deployed and stored, and the storage bag can be easily lowered into the field. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a right side view of a root vegetable harvester 1 according to an embodiment of the present invention. [Figure 2] FIG. 2 is a left side view of the same. [Figure 3] FIG. 3 is a plan view of the same. [Figure 4] FIG. 4 is a rear view of the same. [Figure 5] FIG. 5 is a schematic plan view showing the configuration of the belt conveyance mechanism of FIG. [Figure 6] 6 is a schematic rear view showing the configuration of the second belt conveying device and the like shown in FIG. [Figure 7] FIG. 7 is a schematic plan view showing the configuration of the second belt transport device and the like shown in FIG. [Figure 8] FIG. 8 is a perspective view of the mounting table 10 of FIG. [Figure 9] 9(a) is a schematic plan view showing the internal structure of the mounting table of FIG. 8, and FIG. 9(b) is a schematic side view of the same. [Figure 10] 10 and 8. FIG. 11 is a perspective view of a main part of the drawer portion of the table main body shown in FIG. [Figure 11] FIG. 11 is a perspective view of the main part of the same. [Figure 12] Figure 12(a) is an exploded perspective view of the main parts around a drive transmission device 83 according to another embodiment, Figure 12(b) is a cross-sectional view of the main parts of the same, and Figure 12(c) is an enlarged perspective view of the main parts of an adjustment crank. [Figure 13] FIG. 13 is an enlarged view of a main part of a harvesting device according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In the following description, unless otherwise specified, the forward direction of the root vegetable harvester 1 is referred to as "front," the opposite direction as "rear," and the right side when facing forward is referred to as "right" and the left side is referred to as "left." In this specification, crops refer to root vegetable vegetables having roots and stems and leaves, such as carrots and radishes, and the harvested crop is referred to as the "harvest." Harvesting carrots will be described as an example of a crop.

[0017] <1. Basic configuration of root vegetable harvester> Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 show a root vegetable harvester 1 according to a preferred embodiment of the present invention. The root vegetable harvester 1 in this embodiment is configured so that operators, an operator who operates the machine and a sorter who sorts the harvested products, can ride on it to harvest the crop 100. That is, the root vegetable harvester 1 has, as basic functions, a travel function for traveling in a field, a harvesting function for harvesting the crop from the field, a transport function for transporting the harvested products, and a storage function for storing the transported harvested products in one place, and in order to perform these functions, it has the following basic configuration.

[0018] The root vegetable harvester 1 includes a machine body 2 supported by a traveling device. The machine body 2 is a trunk portion formed from a metal frame or plate material, and includes an engine E as a drive source for various devices. The traveling device is a device for propelling the machine body 2, and is a pair of left and right crawlers 21L, 21R. However, the traveling device is not limited to this, and may be, for example, a four-wheel drive.

[0019] On the aircraft body 2, a control floor 22 for the operator and a sorting work floor 23 for sorting workers are provided, depending on the purpose of the work. Although the structures of the control floor 22 and the sorting work floor 23 will not be described in detail, the floor is formed by attaching panels that form the floor surface to a plurality of frame members arranged on the aircraft body 2. The control floor 22 is provided at the front of the aircraft body 2, and is configured with a cockpit 24 where the operator sits, control levers 25 for operating travel and equipment, an instrument panel, etc. Note that on this control floor 22, the operator (operator) sitting in the cockpit 24 performs operation work, such as checking the instrument panel and operating the control levers 25. The sorting work floor 23 is provided at the rear of the aircraft body 2 behind the control floor 22, and is provided with a sorting work seat 26 where the sorting workers sit. On the sorting work floor 23, sorters select crops that are deemed defective due to damage, deformation, etc., and remove them by hand.

[0020] A harvesting device 3 that harvests crops is disposed on the left side of the machine body 2. In this embodiment, the harvesting device 3 is disposed on the left side of the machine body 2, but it can also be disposed on the right side of the machine body 2 (the devices on the machine body 2 are disposed left and right reversely). The harvesting device 3 includes a raising unit 31 that raises the stems and leaves of the crop, and a pulling and conveying unit 32 that clamps the stems and leaves raised by the raising unit 31, pulls them out of the field, and conveys them to the rear of the machine body 2. At the conveying end of the pulling and conveying unit 32, there is provided a stem and leaf cutting mechanism 33 that cuts the stems and leaves of the crop, and a discharge chute 34 that discharges the cut stems and leaves into the field. The harvesting device 3 is mounted so as to be able to rise and fall relative to the machine body 2.

[0021] The stem and leaf cutting mechanism 33 is equipped with a pair of left and right horizontal conveying belts 33L, 33R that clamp the stems and leaves of the crop being transported by a pair of left and right clamping conveying belts 32L, 32R and transport them approximately horizontally rearward, and a pair of left and right rotary cutting blades 33K that cut between the stems and leaves and the roots of the crop at a position approximately midway between the horizontal conveying belts 33L, 33R, and sends the stems and leaves of the crop cut off by these rotary cutting blades 33K to a discharge chute 34.

[0022] In addition, a belt conveying mechanism V is provided across the left and right of the machine body 2 to convey the crops from the harvesting device 3 located on the left side of the machine body 2 to the storage unit 4 located on the right side. This belt conveying mechanism V includes a first belt conveying device 5 that conveys while processing the remaining leaves of the crops that have fallen from the harvesting device 3 after the stems and leaves have been cut, and a second belt conveying device 6 that passes the crops handed over from the first belt conveying device 5 through a sorting work area 9 and then conveys them to the storage unit 4.

[0023] The storage section 4 is composed of a table 10 on which storage bags 48 for storing crops transported and sent out from the second belt conveyor device 6 are placed, and a hanger arm 45 that suspends and holds the opening 48a of the storage bag 48 placed on the table 10 during storage work. The configurations of the table 41 and the hanger arm 45 will be described later.

[0024] <2. Belt conveyance mechanism configuration> 5 is a schematic plan view showing the configuration of the belt conveying mechanism V of FIG. 3, FIG. 6 is a schematic rear view showing the configuration of the second belt conveying device 6 etc. of FIG. 3, and FIG. 7 is a schematic plan view showing the configuration of the second belt conveying device 6 etc. of FIG. 3.

[0025] The first belt conveying device 5 is composed of a belt conveyor 51 that receives the roots of the crops that fall after being cut by the rotary cutting blade 33K and conveys them to the right of the machine body 2, and a cleaning roller 52 that removes and cleans any remaining leaves, soil, etc. from the root vegetable part of the crop 100 being conveyed by the belt conveyor 51 and sends it to the second belt conveying device 6 located diagonally forward or to the side.

[0026] The belt conveyor 51 is composed of support frames 53, 53 arranged at intervals in the front-to-back direction of the body 2 so as to extend long in the left-to-right direction of the body 2 at a position further rearward of the body 2 than the second belt transport device 6, a drive roller 54 and a driven roller 55 rotatably arranged between both longitudinal ends of the support frames 53, 53, and a first transport belt 56 that rotates while being wrapped around the drive roller 54 and driven roller 55.

[0027] The belt conveyor 51 is positioned so that the conveyance starting end of the first conveyor belt 56 is located almost directly below the rotary cutting blade 33K. Furthermore, the belt conveyor 51 is formed such that the upper part of the support frame 53, which is positioned at the rear of the machine body 2, protrudes above the conveying surface of the first conveyor belt 56, and is used as a side wall to prevent the crops 100 from spilling over or falling off the first conveyor belt 56.

[0028] In the belt conveyor 51, the first conveyor belt 56 is rotated to transport the crops 100 in the conveying direction by a drive roller 54 that rotates by transmission of rotational power from the engine E, for example. The conveying direction E1 at this time is the direction in which the conveying surface of the first conveyor belt 56 moves from the left side to the right side of the machine body 2. The first conveyor belt 56 is an endless belt made of a material such as rubber with a required width, thickness, and circumference.

[0029] The cleaning roller 52 is arranged to rotate on the upper surface of the conveyance end of the belt conveyor 51 with a gap large enough to prevent the root vegetable portion of the crop 100 from passing through, and at an angle intersecting the conveyance direction (to the right of the machine body 2) of the belt conveyor 51. The cleaning roller 52 is arranged with the entire roller tilted relative to the conveyance direction of the belt conveyor 51 so that its front end 52f is located on the right side of the machine body 2 and its rear end 52r is located on the left side of the machine body 2.

[0030] In this first belt conveying device 5, as shown in Figure 5, the crops 100 transported in the conveying direction by the first conveying belt 56 of the belt conveyor 51 are subjected to cleaning processes such as removing residual soil by contact with the cleaning processing roller 52 and removing residual leaves that are caught in the gap between the cleaning processing roller 52 and the first conveying belt 56, and are transported while being guided by the cleaning processing roller 52 to the right front of the machine body 2, and are finally moved to the second belt conveying device 6 and handed over.

[0031] Next, the second belt conveying device 6 is composed of a belt conveyor 61 that starts to convey the crops 100 (roots) handed over from the first belt conveying device 5 in the stem and leaf processing device 34 from the left side to the right side of the machine body 2, passes through the sorting work floor 23 where assistant workers perform sorting work, and then conveys them until they are sent to the storage device 4.

[0032] This belt conveyor 61 is configured to transport the crops 100 using the second transport belt 62, the entire conveyor of which is a single endless body. Furthermore, from the perspective of transferring the crops 100 from the first belt transport device 5, a portion of this belt conveyor 61 (the area at the transport starting end side of the second transport belt 62) is arranged in parallel with the belt conveyor 51 of the first belt transport device 5. The entire belt conveyor 61 is arranged in a position rearward of the control floor 22 of the machine body 2 and forward of the first belt transport device 5, extending long in the left-right direction of the machine body 2. Furthermore, this belt conveyor 61 is made up of a fixed conveyor portion 61A and a movable conveyor portion 61B.

[0033] The second conveyor belt 62 is composed of endless transmission chains 621, 621 that rotate in the conveying direction of the belt conveyor 61 (toward the right of the machine body 2), a plurality of conveyor bars 622, ..., and a plurality of receiving plates 623. The conveying direction at this time is the direction in which the conveying surface of the second conveyor belt 62 moves from the left side to the right side of the machine body 2.

[0034] The power transmission chains 621, 621 rotate by receiving rotational power from supporting rotors, which will be described later, and are arranged at both the left and right ends of the belt conveyor 61 in the conveying direction (at the front and back of the machine body 2 in this embodiment). The conveyor bars 622, ... are the parts that actually carry and convey the crops 100, and are arranged between the power transmission chains 621, 621 at equal intervals in the rotation direction. The receiving plates 623 are plate-shaped members that receive the crops 100 being conveyed, and are arranged protruding upward to a required height at positions that are equal intervals for each required number of the plurality of conveyor bars 622, .... The second conveyor belt 62 is configured to rotate by receiving rotational power from a motor 82 transmitted through a drive path (drive transmission device 83) separate from the power transmission chains 621, as will be described later.

[0035] The fixed conveyor section 61A is a part of the belt conveyor 61 that is fixedly positioned in the area from the position at the left end of the body 2 where the conveyance starts to the position midway through the conveyance (the connection point with the movable conveyor section 61B).

[0036] This fixed conveyor section 61A is equipped with a fixed support frame 63 that is arranged in an extended state so as to protrude to the right side of the body 2 from a state parallel to the belt conveyor 51 of the first belt transport device 5. The fixed support frame 63 is composed of a pair of side frames that are arranged facing each other at an approximately constant interval in the front-to-rear direction of the body 2, and a connecting frame including a bottom frame that connects the pair of side frames together.

[0037] The fixed conveyor unit 61A is provided with, on a fixed support frame 63, a plurality of support rotors 71A-71D, 72A-72C that rotatably support the portion of the second conveyor belt 62 (its transmission chains 621) that passes through the fixed conveyor unit 61A at the conveyance starting end side thereof, and a conveyance guide 73 that supports and guides the movement of the second conveyor belt 62 (its transmission chains 621) as it rotates between the support rotors 71, 72. The support rotors 71A-71D are sprockets or the like that rotatably support the transmission chains 621, 621 while meshing with them. The support rotors 72A-72C are pulleys or the like that rotatably support the transmission chains 621, 621.

[0038] Furthermore, the fixed conveyor section 61A is formed so that the upper part of the fixed support frame 63 protrudes above the conveying surface of the second conveying belt 62, and is used as a side wall to prevent the crops 100 from protruding or falling off the second conveying belt 62.

[0039] On the other hand, the movable conveyor section 61B is a part of the belt conveyor 61 that exists in the area from the position where the fixed conveyor section 61A ends its conveying motion to the position where it reaches the storage device 4, and is a part that is arranged in a state where it can swing around the end closer to the fixed conveyor section 61A as a fulcrum.

[0040] The movable conveyor section 61B is provided with a movable support frame 64 that is swingably connected to the conveyance end side portion of the fixed support frame 63 of the fixed conveyor section 61A via a pivot shaft 65 and is arranged in a state where it is inserted into part of the storage device 4. This movable support frame 64, similar to the fixed support frame 63, is also composed of a pair of side frames that are arranged facing each other at an approximately constant interval in the fore-and-aft direction of the machine body 2, and a connecting frame including a bottom frame that connects the pair of side frames together.

[0041] The movable conveyor unit 61B is also provided with, relative to the movable support frame 64, a plurality of support rotors 76A, 76B that rotatably support the portion of the second transport belt 62 that passes through the movable conveyor unit 61B at the transport end side, and a transport guide 77 that supports and guides the movement of the second transport belt 62 as it rotates between the support rotors 76A, 76B. The support rotors 76A, 76B are sprockets or the like that mesh with the transmission chains 621, 621 to rotatably support them. Furthermore, the upper part of the movable support frame 64 of the movable conveyor unit 61B is formed in a shape that protrudes above the transport surface of the second transport belt 62, and is used as a side wall to prevent the crops 100 from protruding or falling off the second transport belt 62.

[0042] The movable conveyor section 61B also includes a lifting cylinder 81 (one end) that expands and contracts to swing the movable support frame 64 up and down around the pivot shaft 65 as a fulcrum relative to the movable support frame 64, a motor 82 that generates rotational power, and a drive transmission device 83 that transmits the rotational power of the motor 82 to the second conveyor belt 62.

[0043] For example, the upper end of the lifting cylinder 81 is rotatably attached to the bottom surface (bottom frame) near the pivot shaft 65 of the movable support frame 64 at the upper end of the piston rod 81a that extends and retracts when the lifting cylinder 81 is extended, while the lower end of the cylinder 81 is rotatably attached to a portion that is to the left of the machine body 2 relative to the upper end of the sorting work floor 23. As a result, when the lifting cylinder 81 is in its most retracted state, it is positioned in a state in which it is tilted slightly to the right of the machine body 2 as a whole.

[0044] Furthermore, an electric cylinder, for example, is used as the lifting cylinder 81. The lifting cylinder 81 is actuated, for example, by operating a pedal 89 installed on the sorting work floor 23. The pedal 89 is composed of a pedal for raising the conveyor and a pedal for lowering the conveyor. By operating the pedal 89 to actuate the lifting cylinder 81, the movable conveyor unit 61B swings around the pivot shaft 65 as a fulcrum.

[0045] As shown in Figure 6, the drive transmission device 83 is composed of an output gear 84 attached to the output shaft of the motor 82, a drive gear 85 attached to the shaft of the drive support rotor 76B that drives the second conveyor belt 62 (its transmission chain 621), a transmission chain 86 that is looped around the output gear 84 and the drive gear 85 and rotates, and an exterior cover 87 that covers and protects them.

[0046] The motor 82 is attached via a mounting bracket or the like to the bottom surface of the movable support frame 64, slightly before the conveyance terminal end. In this case, the motor 82 is disposed in a position below and before the conveyance terminal end of the second conveyor belt 62, when the second belt conveying device 6 is viewed as a whole. The motor 82 or the mounting bracket to which the motor 82 is fixed is attached so that its mounting position relative to the movable support frame 64 can be adjusted via an elongated hole that is long in the direction approaching and moving away from the drive gear 85.

[0047] <3. Hanger arm configuration> The hanger arm 45 is provided in a state where it stands upright from the side surface of the end portion of the movable support frame 64 of the second belt conveying device 6, which is the conveyance terminal end side. As shown in Figure 4, this hanger arm 45 is composed of a fixed frame 46a fixedly attached to the end side of the movable support frame 64, a movable frame 46b attached to the raised upper end of the fixed frame 46a so as to hang on a support shaft 46c as a fulcrum and be able to swing, and hooks 47 attached to both ends of the movable frame 46b and hooked onto hook holes or the like formed in the opening 48a of the storage bag 48 to suspend the storage bag 48.

[0048] The hanger arm 45 can hold the opening 48a of the storage bag 48 placed on the platform 10 with the hook 47 hooked, opening toward the end of the conveyance path of the movable conveyor unit 61B. The movable frame 46b of the fixed frame 46a moves around the support shaft 46c, allowing the orientation of the opening 48a of the storage bag 48 to be adjusted as desired. This allows the root vegetable harvester 1 to easily and accurately place the crops 100 delivered from the movable conveyor unit 61B of the second belt transport device 6 into the storage bag 48. Extending the lifting cylinder 81 lifts the storage bag 48 hooked on the hook 47 of the hanger arm 45 and moves it upward. This allows the bag 48 to be lifted into the air (ground-lifted) away from the platform 10. Conversely, when the lifting cylinder 81 is contracted while the storage bag 48 is lifted up in the air, the storage bag 48 is moved downward, and can be placed on the table 10.

[0049] <4. Configuration of the mounting table> FIG. 8 is a perspective view of the mounting table 10 of FIG. 8, the platform 10 includes a platform main body 110 for placing the storage bag 48 thereon, and a storage section 130 that can store the platform main body 110 on the side of the machine body 2. The platform main body 110 is connected to and supported by an extendable slide rail 140. When the platform 10 is in use, the extendable slide rail 140 is extended, and the platform main body 110 is pulled out to the right, thereby extending the platform main body 110 from the storage section 130 to the right of the machine body 2. When the platform 10 is not in use, the extendable slide rail 140 is retracted, and the platform main body 110 is pushed in to the left, thereby retracting the extendable slide rail 140, thereby storing the platform main body 110 in the storage section 130.

[0050] The mounting table main body 110 is roughly box-shaped, and the upper part of the mounting table main body 110 is provided with a mounting surface 111 on which the storage bag 48 is placed, and a conveyor belt 120 that can convey the storage bag 48 rearward is provided on the mounting surface. The lower part of the mounting table main body 110 is provided with a drawer section 150 that houses a roller slider plate 151 (described later) so that it can be freely drawn out. A handle 110a is provided on the right side of the mounting table main body 110, and this handle 110a makes it easy to slide the mounting table main body 110 left and right.

[0051] The storage section 130 is attached to the lower part of the sorting operation floor 23, and one end side of a pair of front and rear telescopic slide rails 140, 140 is attached to a pair of front and rear fixed sections 131, 131 whose upper surfaces are fixed to the machine body 2. Note that the storage section 130 in this embodiment is formed in the shape of a case (container) having a storage space 132 for storing the platform main body 110 between the pair of front and rear fixed sections 131, 131, but it may also be formed by combining frame materials.

[0052] The pair of front and rear telescopic slide rails 140, 140 each includes an outer rail 141 fixed to the fixed portion 131, an inner rail 142 fixed to the table main body 110, and an intermediate rail 143 slidably interposed between the outer rail 141 and the inner rail 142, thereby supporting the table main body 110 so that it can slide freely in the left and right directions. With this configuration, an operator can easily unfold and store the table 10 (i.e., take the table main body 110 into and out of the storage section 130) by operating the handle 110a.

[0053] 9(a) is a schematic plan view showing the internal structure of the mounting table 10 of FIG. 8, and FIG. 9(b) is a schematic side view of the same. 9(a) and 9(b), the conveyor belt 120 is a belt mechanism capable of conveying the storage bags 48 in one direction (rearward), and is arranged in a pair on the left and right with the longitudinal direction. Four support rollers 122 are rotatably supported on support frame members 121 on each side, with roller shafts 123 of these rollers 122 connected by multiple endless chains 124. A chain motor 125 that transmits power to the multiple endless chains 124 is driven to rotate the multiple (four) support rollers 122. This causes an endless belt 126 wound around the multiple support rollers 122 to rotate in a circular motion. The placement surface 111 is also provided with a pair of rectangular cutouts on the left and right, and the upper portion of the endless belt 126 is exposed above the placement surface 111 through the cutouts. As a result, the upper part of the endless belt 126 moves from front to rear by driving the left and right chain motors 125, and the storage bags 48 are transported rearward. The left and right chain motors 125 can be started and stopped by a switch (not shown) provided on the sorting work floor 23.

[0054] 10 and 11 are perspective views of the main part of the drawer section 150 of the mounting table main body 110 of FIG. As shown in FIG. 10 , the drawer section 150 includes a rectangular roller slider plate 151 having a plurality of rotatable rollers regularly arranged on its upper surface along the longitudinal direction, and a substantially box-shaped guide case 152 that holds the roller slider plate 151 so that it can slide back and forth. The left and right side walls of the guide case 152 are each provided with ribs 153 that protrude inward to guide the sliding of the roller slider plate 151, and with slits 154 extending in the longitudinal direction. A pivot shaft 151a that pivotally supports the roller slider plate 151 is provided at the front end of the roller slider plate 151. Both left and right ends of the pivot shaft 151a are fitted into the slits 154, so that the roller slider plate 151 can move back and forth along the longitudinal direction of the slits 154 when pushed or pulled. A handle 151b is provided at the front of the roller slider plate 151 to facilitate the pushing and pulling operation.

[0055] As a result, when the roller slider plate 151 is stored in the guide case 152, the operator can grasp the handle 151b and pull it rearward to remove it from the guide case 152. Furthermore, when the roller slider plate 151 is pulled out to the rear end of the guide case 152, that is, when the rotation shaft 151a reaches the rear end of the slit 154, the notch 155 provided at the front end of the roller slider plate 151 causes the bottom surface of the guide case 152, which had prevented the roller slider plate 151 from rotating, to no longer come into contact with the lower part of the roller slider plate 151, allowing the roller slider plate 151 to rotate at its rear end around the rotation shaft 151a. As a result, as shown in FIG. 11 , when the roller slider plate 151 is pulled out, it can be tilted downward toward the rear. Note that a stopper (for example, a metal fitting that can be engaged and disengaged with the roller slider plate 151) that can maintain the horizontal position when the roller slider plate 151 is pulled out to the rear end of the guide case 152 may be provided on the guide case 152 to restrict the rotation of the roller slider plate 151, and the roller slider plate 151 may be allowed to rotate by releasing the stopper. This improves safety while maintaining the roller slider plate 151 in a horizontal position, thereby improving convenience by allowing the storage bag 48 to be placed on the roller slider plate 151. Note that, by providing a step between the placement surface 111 and the front part of the pulled-out roller slider plate 151, the storage bag 48 transported from the placement surface 111 to the roller slider plate 151 can slide down the roller slider plate 151 with force due to the drop over the step and be lowered into the field.

[0056] When not in use, the platform 10 configured in this manner can be stored inside the machine body 2 to make it compact. Furthermore, the placed storage bag 48 can be transported rearward by the conveyor belt 120, moved onto the inclined roller slider plate 151, and then smoothly slid down into the field by a plurality of rotatable rollers provided on the upper surface of the roller slider plate 151. Conventionally, the storage bag 48 was lowered into the field by the operator by pulling it, but this reduces the labor involved. Thus, with this configuration, the storage bag 48 can be lowered into the field much more easily and quickly than before, reducing the burden on the operator.

[0057] <5. Automatic storage bag cutting function> The root vegetable harvester 1 can be configured so that, when predetermined conditions are met, it automatically extends the lifting cylinder 81, lifts the storage bag 48 hung on the hook 47 of the hanger arm 45 from the state where it is placed on the mounting table 10, and moves it upward a predetermined distance (lifts it off the ground).

[0058] The predetermined condition for executing the automatic ground cutting can be, for example, that the control lever 25 is tilted to the right for one second or more in order to turn the machine body 2 to the right. As a result, by lifting the storage bag 48 from its position on the mounting base 10 during a right turn, the load on the left crawler 21L increases, increasing the gripping force and preventing slippage of the left and right crawlers 21L, 21R. Furthermore, if the control lever 25 is operated to the right for less than one second, automatic ground cutting is not executed, thereby preventing malfunction. Note that the machine body 2 can be configured to temporarily stop traveling while the storage bag 48 is moving upward due to the automatic ground cutting function.

[0059] Furthermore, the conditions for automatically contracting the lifting cylinder 81, moving the lifted storage bag 48 downward, and placing it back on the platform 10 can be, for example, that the control lever 25 is tilted to the left to turn the machine body 2 left, that the clutch lever that drives the raising unit 31 is turned on, or that the assistant operator operates the pedal 89 to activate the lifting cylinder 81.

[0060] Hanger arm 45 may be provided with a vertical movement cylinder that moves hook 47 at the tip up and down and a horizontal movement cylinder that moves it left and right, so that storage bag 48 hooked on hook 47 can be moved up, down, left and right by operating a predetermined switch. Furthermore, storage bag 48 placed on mounting base main body 110 and hooked on hook 47 may be automatically lifted and moved rearward to be placed on roller slider plate 151 by operating a switch.

[0061] The embodiments of the present invention have been described above. The present invention is not limited to the above-described embodiments. It goes without saying that modifications may be made as appropriate within the scope of the technical concept. Other embodiments will be described below.

[0062] <6. Speed ​​change function of drive transmission device> Fig. 12(a) is an exploded perspective view of essential parts around a drive transmission device 83 according to another embodiment, Fig. 12(b) is a cross-sectional view of the essential parts, and Fig. 12(c) is an enlarged perspective view of essential parts of an adjustment crank. As shown in Fig. 12(a), an adjustment crank 87k for speed change is attached to an exterior cover 87 of the drive transmission device 83. An adjustment pulley 87p that transmits rotational force to the drive gear 85 is connected to the adjustment crank 87k, and the pitch (width) of the adjustment crank 87k can be changed by rotating the adjustment crank 87k (for example, as shown in the illustrated example, the adjustment pulley 87p is a split pulley, with the rear side of the pulley in a fixed position and the front side moving back and forth together with the adjustment crank 87k).

[0063] Instead of the power transmission chain 86, a belt 86a having a generally trapezoidal cross section is wound around the adjustment pulley 87p. Also, Fig. 12(a) shows marks for determining the degree of advancement and retreat of the adjustment crank 87k (degree of speed change). As a result, the pitch (width) is changed by operating the adjustment crank 87k, and by changing the diameter of the adjustment pulley 87p in response, it becomes possible to change the speed of the drive transmission device 83.

[0064] <7. Speed ​​change function of drive transmission device> FIG. 13 is an enlarged view of a main part of a harvesting device 3 according to another embodiment. As shown in FIG. 13, a hydraulic cylinder 200 is provided to raise and lower the upper frame 2u (see FIG. 2) of the machine body 2, which supports the load of the harvesting device 3, and the hydraulic cylinder 200 can be extended or retracted by operating a switch. A slit plate 201 having regular grooves on the top and bottom is attached to the conveyor side surface 202 of the belt transport mechanism V, and a sensor 203 that counts the grooves of the slit plate 201 is attached to the cylinder rod of the hydraulic cylinder 200. As a result, the sensor 203 moves up and down in response to the extension and retraction of the hydraulic cylinder 200, counting the grooves of the slit plate 201, and the extension and retraction position of the hydraulic cylinder 200 can be recorded in a control device (not shown) by the sensor 203. The control device is configured to be able to calculate the extension and retraction position of the hydraulic cylinder 200 based on the count of the sensor 203.

[0065] Furthermore, in a configuration in which the harvesting device 3 is equipped with such a configuration and is configured to be able to automatically raise and lower by controlling the extension and retraction of the hydraulic cylinder 200 using a control device, when work is completed, the extension and retraction position of the hydraulic cylinder 200 before the raising or lowering operation is recorded, and when work is resumed, a control device (not shown) automatically controls the extension and retraction of the hydraulic cylinder 200 based on the recorded position, thereby reproducing the height position of the harvesting device 3 during the previous work, allowing work to be resumed quickly and improving convenience. [Explanation of symbols]

[0066] 1. Root vegetable harvester 2 aircraft 3 Harvesting equipment 4. Storage section 5. First belt conveyor 6 Second belt conveyor 10. Mounting table 21L crawler (left) 21R Crawler (right) 22 Control Floor 23 Sorting floor 24 cockpit 25 Control lever 26 Sorting floor 31 Pulling part 32 Pulling and conveying section 32L clamping conveyor belt (left) 32R clamping conveyor belt (right) 33L horizontal conveyor belt (left) 33R Horizontal conveyor belt (right) 33 Stem and leaf cutting mechanism 33K rotary cutting blade 34 Ejection Shooter 48 Storage Bag 45 Hanger Arm 46a Fixed Frame 46b Movable frame 46c spindle 47 Hook 51 Conveyor Belt 61 Conveyor Belt 61A Fixed conveyor section 61B Movable conveyor section 62 Second conveyor belt 64 Movable support frame 53 Support Frame 54 Drive roller 71A Support Rotor 79 Rotating transmission shaft 81 Lifting cylinder 82 Motor 83 Drive transmission device 100 crops 110 Mounting table body 111 Placement surface 110a handle 120 conveyor belt 121 Support frame member 122 Support roller 123 Roller shaft 124 endless chain 125 Chain motor 126 endless belt 130 Storage section 131 Fixed part 132 Storage space 140 slide rail 141 Outer Rail 142 Inner rail 143 Intermediate rail 150 Drawer section 151 Roller slider plate 151b Handle 152 Guide Case 153 Ribs 154 Slit 155 Notch E-Engine V-belt conveyor mechanism

Claims

1. a machine body supported by a running device; a harvesting device for harvesting crops at one of the left and right ends of the machine body; The harvesting device includes a raising unit that raises the stems and leaves of the crops, a pulling and conveying unit that clamps the stems and leaves raised by the raising unit, pulls them out of the field, and conveys them to the rear of the machine body, a belt conveying mechanism that conveys the crops supplied from the pulling and conveying unit from one left or right end side to the other left or right end side of the machine body, and a platform on which to place storage bags that contain the crops conveyed by the belt conveying mechanism, A root vegetable harvester having an operation floor on which a pilot's seat for a pilot is provided and a sorting operation floor on which a sorting operator's seat for a sorter is provided, the mounting base includes a mounting base main body on which the storage bag is placed, and a storage section capable of storing the mounting base main body on the aircraft body side, The storage unit is disposed below the sorting operation floor, The mounting table main body is connected to the storage unit by an extendable slide rail and is configured to be freely stored in the storage space of the storage unit; and a drawer section that accommodates a roller slider plate having a plurality of rollers on an upper surface thereof so as to be freely drawn out; The root vegetable harvester is configured so that the drawer section can be placed in an inclined position that descends toward the rear by pulling the roller slider plate rearward.

2. 2. The root vegetable harvester according to claim 1, wherein the platform body has a loading surface on which the storage bag is placed, and a conveying belt is provided on the loading surface to transport the storage bag rearward.

3. 3. The root vegetable harvester according to claim 2, characterized in that, when a predetermined condition is met, the lifting cylinder is automatically extended to lift the storage bag hung on the hook of the hanger arm from its position on the platform and move it upward a predetermined distance.

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