JP2001275431A - Root vegetable harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a root vegetable harvester for carrying root vegetables from a harvest portion to a grading conveyer and sending the carried root vegetables into a container in a recovery portion, which can stop the sending of the root vegetables into the recovery portion and scarcely damage the root vegetables. SOLUTION: A stopper 74 for preventing the sending of the root vegetables (a) into the recovery portion 50 through a grading conveyer 48 is disposed. When the stopper 74 is switched into an action state, a speed change control means 77 automatically operates a speed change motor 78a, and a grading speed-changing device 70 is switched into a low speed side by the use of the speed change motor 78a. When the stopper 74 is switched into an action- canceling state, the speed control means 77 changes the grading speed change device 70 into the standard side with the speed change motor 78a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harvesting section for lifting root vegetables from a field and removing leaves from the root vegetables, a sorting conveyor for transporting the root vegetables from the harvesting section, and a root vegetable fed from the sorting conveyor. And a collecting unit for installing a container in the root vegetable harvester.

[0002]

2. Description of the Related Art The above-mentioned root vegetable harvesting machine carries out a harvesting operation of removing roots such as carrots and radishes from a field by a harvesting unit and removing leaves attached to the root vegetables, and at the same time, selecting root vegetables from the harvesting unit. It is possible to perform an operation of sorting by a conveyor and sending it to a collecting section to collect in a container.

[0003]

In performing the above-mentioned collecting operation, when the container is full of root vegetables, it is necessary to take out the full container from the collecting section and install an empty container in the collecting section. When performing this container replacement, the root vegetables were sometimes sent from the sorting conveyor to the collection section and spilled. To avoid this spill, it was necessary to stop the machine running and interrupt the harvesting work so that root vegetables would not be sent to the sorting conveyor while the containers were being replaced. SUMMARY OF THE INVENTION An object of the present invention is to provide a root crop harvesting machine capable of recovering root crops while avoiding damage and spillage without interrupting the harvesting procedure.

[0004]

The constitution, operation and effect of the invention according to claim 1 are as follows.

[Structure] A harvesting unit that lifts root vegetables from the field and removes leaves from the root vegetables, a sorting conveyor that transports the root vegetables from the harvesting unit, and a container that allows the root vegetables to be sent from the sorting conveyor. In a root crop harvesting machine having a collecting unit, a sorting speed change device for changing a driving speed of the sorting conveyor is provided, and a stopper acting on the root vegetables conveyed by the sorting conveyor so as not to move to the collecting unit is provided. , Is provided so as to be switchable between an operation state and an operation release state.

[Operation] When a full container is replaced with an empty container, the stopper is switched to the operating state, and the selective transmission is artificially shifted to a low speed side or automatically shifted. Then, even if the harvesting operation is continued at a normal speed and the root vegetables from the harvesting section are sent to the sorting conveyor as usual, the root vegetables transported by the sorting conveyor are blocked by the stopper so as not to move to the collecting section, and the container is Will not be sent to the collection unit that has not been installed yet and will not spill. At this time,
Root vegetables are blocked by the stopper and deposited on the sorting conveyor, causing a slip between the root vegetables and the sorting conveyor or stopper, or the root vegetables being pressed against other root vegetables or stoppers due to the conveying power of the sorting conveyor. Even if a situation occurs, the sorting conveyor transports the root vegetables toward the stopper at a lower transport speed than when performing the sorting process, newly installing an empty container in the collection part, and installing the stopper. The amount of root vegetables deposited in the period before the operation is switched to the release state and the dam is released is suppressed so as to be as small as possible. Can be swapped.

[Effects] Therefore, in replacing the containers, the stopper is used to prevent the root vegetables from being sent to the collecting section having no container and spilling, and the root vegetables are slipped or pressed against the sorting conveyor or the stopper. Damage can be performed while controlling the damage by slowing down the sorting conveyor, and the root vegetables can be harvested with little or no loss. Moreover, the harvesting operation can be performed while continuing the harvesting operation at a normal traveling speed, and the harvesting operation can be performed efficiently.

The structure, operation and effect of the invention according to claim 2 are as follows.

[0009] In the configuration according to the first aspect of the present invention, the linkage mechanism links the stopper and the selection transmission so that when the stopper is switched to the operating state, the selection transmission is switched to a lower speed side. Is provided.

[Operation] When the stopper is switched to the operating state, the selection transmission is automatically switched to the low speed side due to the linking operation of the linkage mechanism, so that no special shifting operation for switching the selection transmission is required. The transport speed by the sorting conveyor is reduced.

[Effects] Therefore, in order to replace the containers, the sorting conveyor can be easily decelerated by simply performing the simple operation of switching the stopper, and the operation can be performed while preventing the loss or damage of the root vegetables.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a pair of left and right crawler-type traveling devices 1, a driving unit 2 provided with a driving seat 2a for riding and driving, and a position below the driving seat 2a. A pair of left and right weeding devices 11, on the side of the driving unit 2 of the traveling body having a driving unit having an engine E
11, a harvesting unit 10 including one wheel 12 for supporting the harvesting unit is connected. A root vegetable conveyor 40 whose front end is located above the pair of left and right body forward-rearward main frames 13a of the harvest part frame of the harvest part 10 and below the leaf part removing device 20 of the harvest part 10, this root vegetable conveyor 40 The sorting conveyor 48, which is located at the rear end of the traveling machine body on the side of the driving section on the rear end side, the sorting conveyor 4
Recovery unit 5 located behind the operation unit 2 on the transport end side of the transfer unit 8
0, a small carrier 51 located on the rear side of the collecting unit 50, and a lateral side opposite to the side on which the harvesting unit 10 of the traveling machine is located, from the lateral outside of the operating unit 2 to the lateral outside of the collecting unit 50. Large loading bed 52 that is long in the longitudinal direction of the machine, operating section 2, large loading bed 52, collection section 50, sorting conveyor 48, and harvesting section 10.
Each of the container loading sections 53 surrounded by the symbols is provided on the traveling body. The driving force of the engine E is configured to be transmitted to the harvesting unit 10 and the respective conveyors 40 and 48, thereby constituting a riding type ginseng harvester. In this ginseng harvester, the weeding device 11 on the left and right of the harvesting unit 10 is separated on both sides of a row of ginseng vegetated in a field, and the traveling body travels along the ginseng row. By doing
The ginseng a is pulled out of the field with the leaf b attached thereto, and the beard root attached to the lower end side of the ginseng a and the leaf b attached to the upper end side are removed. The lost ginseng a is collected in a container 54 such as a container by the collection unit 50, and the beard root and the leaves b removed from the ginseng a are discharged to the field. I have.

As shown in FIG. 1 and the like, a mounting cylinder 13b serving also as a connecting frame for connecting the base ends of the pair of left and right main frames 13a is provided upright at the rear of the body frame 3 of the traveling body. The pair of left and right supports rotatably connected to each other over the pair of left and right supports 4 so as to be vertically swingable about the body horizontal axis P of the mounting cylinder 13b on the body frame 3 of the traveling body. Main frame 13a, a rear support 13c erected at the base end of each main frame 13a,
The harvesting unit transmission case 60 attached across the middle part of the harvesting unit 3a, the pull-up transmission case 61 extending forward and upward from the both ends of the harvesting unit transmission case 60, and the harvesting unit transmission case 60 The harvesting part frame is constituted by the weeding transmission case 62 extending forward from the one end side of the machine body and the front struts 13d erected on both ends of the harvesting part transmission case 60.

In this harvesting section frame, a piston rod is connected to a cylinder connecting member 13e which is connected between the front support 13d and the rear support 13c across the left and right main frames 13a, and the cylinder tube is connected to the body frame 3 of the traveling body. Is swingable up and down with respect to the traveling machine body by a hydraulic lift cylinder 5 connected to the vehicle.

As shown in FIGS. 1 and 2 and the like, the harvesting portion frame, and a pulling-up portion attached to the leading end side of the main frame 13a of the harvesting portion frame and the extension end side of the pulling-up transmission case 61. Device 14, the right weeding device 11 attached to the lower end side of the right device portion of the pull-out device 14 and the extending end side of the weeding transmission case 62, and the upper end of the right weeding device 11 The weeding device 1 on the left side attached to the transmission case 63 extending from the side and the lower end side of the left device portion of the pulling-up device 14.
1, a soil loosening blade 15 supported by a support arm 13f extending from the front end side of each of the main frames 13a, and a whisker attached to the left and right main frames 13a below the front end side of the pull-out device 14. The harvesting unit 10 is constituted by a cutting device 16 and a leaf removing device 20 attached between upper ends of the front support 13d and the rear support 13c.

The weeding device 11 on the left and right sides is driven by an endless rotating chain that is rotatably provided inside the weeding weeding case 11a, and raises the claw 11b to cause the weeding case 11.
a rising weeding device that moves upward in a mounting posture protruding forward from a, and a rake rod 11c extending forward from the lower end side of the raising weeding device, and is scattered in the field by the rake rod 11c. The ginseng a to be harvested in the field is scooped up, and the leaves b of the ginseng to be harvested are scooped up. Treats grass and causes.

The left and right soil loosening blades 15 enter the soil on the side of the ginseng a to be harvested.
The soil is loosened and treated so that the ginseng a can easily escape from the soil when the ginseng is raised.

The pulling device 14 includes an endless transport belt 14.
The left side device section rotatably supported by the pull-up frame in a rearwardly inclined posture, which is located at a higher arrangement level as the a reaches the rear side of the fuselage, and an endless transport belt similarly to the left side device section. 14a comprises the right-side device portion which is supported by the pull-out frame so as to be rotatable and rotatable in a rearwardly inclined position positioned at a higher arrangement level toward the rear side of the fuselage, the weeder device 11 and a soil loosening blade The left and right endless conveyor belts 14a are used for the left and right endless conveyor belts 14a.
The ginseng a to be harvested is lifted out of the field with the leaf b attached, and is conveyed upward and rearward in the hanging posture by holding and lifting the ginseng.

The whisker cutting device 16 includes a guide member disposed on a path along which the carrots a conveyed by the pulling device 14 move, a rotary cutter 16a rotatably provided inside the guide member, and a rotary cutter 16a. An electric motor 16b for driving a cutter 16a, and a rotary cutter 1 for rotating a beard root attached to a tip end of a ginseng a, which is pulled out from a field by a pulling-up device 14 and conveyed, by a guide body.
6a, cut by the cutter 16a and separated from the ginseng a, and the separated beard root is dropped into the field and discharged.

As shown in FIGS. 1 and 3, etc., the leaf removing device 20 comprises a pair of left and right cast transmission cases 21 supported by the front support 13d and the rear support 13c of the harvesting frame. A positioning device 22 provided above the front end sides of the two transmission cases 21; a cutting conveyance device 25 provided above the rear end sides of the two transmission cases 21; A leaf discharge transporting device 30 provided between the transporting end portion and a rotary cutter 35 which is disposed below the middle of the cutting transporting device 25 and is rotatably mounted above each of the two transmission cases 21. It is composed.

As shown in FIG.
Winds an endless positioning chain 24 over a pair of front and rear sprockets 23a and 23b rotatably mounted on the upper sides of the left and right transmission cases 21, respectively. It is configured to be driven by a sprocket 23b.

That is, as shown in FIGS. 9 and 11, the link plates of the left and right positioning chains 24 are slidably provided with positioning rods 24b having positioning rollers 24a rotatably attached to the distal ends thereof. A holding spring 24d disposed between a rod support 24c provided on the link plate of the positioning chain 24 and a spring receiving plate provided on the positioning rod 24b.
Are externally fitted to the positioning rod 24b. In the middle of the pulling device 14, the left and right positioning between the portion of the leaf portion b of the ginseng a that is lifted and transported by the pulling device 14 and the portion between the endless transport belt 14a of the pulling device 14 and the ginseng a is performed. It enters between the positioning rollers 24a of the chain 24, and after that, the pulling-out device 14 is still in the ginseng a.
The positioning device 22 holds the leaf portion b between the left and right positioning chains 24 and transports the leaf portion b toward the rotary cutter 35 in a suspended posture. At this time, a difference is provided between the holding force exerted by the positioning device 22 by the holding spring 24d and the holding force of the pulling device 14, and that the pulling device 14 lifts the carrot a. As a result, the ginseng a enters between the left and right positioning rollers 24a and is then moved rearward with respect to the positioning rollers 24a as it is transported rearward. At the transport end side of the positioning device 22, as shown in FIG. The upper end of a is in contact with the positioning roller 24a and acts as a stopper so that the positioning roller 24a does not rise further with respect to the ginseng a. Thereby, when the ginseng a is supplied to the rotary cutter 35 and the leaf part b is cut, the positioning device 22 is cut so as to be cut at a portion slightly separated from the upper end of the ginseng a. When the ginseng a is supplied to the rotary cutter 35, the ginseng a is positioned with respect to the rotary cutter 35.

As shown in FIG.
5 is a pair of front and rear belt pulleys 26a, 26b rotatably mounted on the upper sides of the left and right transmission cases 21, respectively.
, And the left and right transport belts 27 are driven by a rear drivable belt pulley 26b.
The transport start ends of the left and right transport belts 27 in the transport device 25 for cutting are located below the transport end portion of the pull-out device 14,
The positioning device 22 is disposed above the transport end portion.
As a result, the transfer device 25 for cutting can be moved to the positioning device 22.
After the positioning of the ginseng a is completed, the leaf portion b of the ginseng a is held by the left and right transport belts 27 while being inherited from the pulling-up device 14 and the positioning device 22 and transported in a hanging posture in a rearward direction of the fuselage. Supply between 35. Then, the leaves separated by the cutter 35 and separated from the ginseng a are pinched as they are, and further conveyed in the machine rearward direction to release the pinching behind the cutter 35.

As shown in FIG. 3, FIG. 6, etc., the leaf discharging and conveying device 30 is rotatably provided with a frame supported by a frame of the left device portion of the pull-out device 14 and a frame of the cutting and conveying device 25. An endless chain 32 having a conveying projection is wound around a pair of front and rear sprockets 31a and 31b, and the endless chain 32 is driven by a front drivable sprocket 31a. The transport guide rail 33 in the front-rear direction of the machine along the transport action section is supported by the frame of the right side device of the pulling-up device 14.

As shown in FIG. 3, a chain 14c for transmitting the power of the input shaft 21a of each of the left and right transmission cases 21 to a belt drive pulley 14b wound around the transport end of the endless transport belt of the pull-out device 14. The positioning chain 24 of the positioning device 22 and the endless transport belt 27 of the cutting transport device 25 are driven by the driving force transmitted from the pull-up transport device 14 in conjunction with the power take-out shaft 14d around which the wire is wound. It is. The positioning device 22 and the transporting device 25 for cutting are set by the speed reducing action of the power transmission mechanism composed of a bevel gear provided inside the power transmission case 21 and the setting of the diameter of the sprocket 23 a and the pulley 26 a around which the positioning chain 24 and the endless transport belt 27 are wound. Is lower than the transfer speed of the pull-out device 14. In other words, the transport end side of the pulling-out device 14 is in an arrangement state in which the distance from the positioning device 22 or the cutting transport device 25 increases toward the transport end side.
When the positioning device 22 or the cutting transport device 25 transports the ginseng a, the leaf b is pulled between the positioning device 22 and the extracting device 14 or between the cutting transport device 25 and the extracting device 14. Carry so that cutting does not occur.

A drive shaft 34 for driving the front sprocket 31a of the leaf feeding / conveying device 30 is integrated with a belt driving pulley 14b that winds around the conveying end of the endless conveying belt 14a in the left device of the pulling-out device 14. It is connected to a rotating pulley support shaft 14e via a universal joint, and is driven by a driving force transmitted from the pulling-out device 14 to feed the leaf discharging and conveying device 3
The zero endless chain 32 is driven. The size of the front sprocket 31a is set so that the transport speed of the leaf portion b by the leaf discharge transport device 30 is higher than the transport speed of the leaf portion b by the cutting transport device 25.

Therefore, the leaf discharging and conveying device 30 is provided with an endless chain 32 that is located on the leaf tip side of the portion of the leaf portion b which is cut and received by the positioning device 22 and the pulling-up device 14 by the cutting and conveying device 25. And transport guide rail 33
Then, the sheet is conveyed rearward along the conveyance guide rails 33, and slightly ahead of the portion conveyed by the cutting conveyance device 25 after being cut from the ginseng a by the rotary cutter 35. The sheet is conveyed and released from being slightly held behind the cutting conveyance device 25 and dropped.

Thus, the harvesting unit 10 drives the lift cylinder 5 to swing up and down around the axis P for swinging operation of the harvesting unit frame by the lift slider 5, so that the harvesting unit 10 moves relative to the traveling machine body. Up and down, weeding device 11
Is located near the field, and the soil release blade 15 lowers to a work level at which the soil release blade 15 enters the soil, or the grass weeding device 11 and the soil release blade 15 rise to the non-work level at which the soil release blade 15 has risen from the field. Then, when the traveling body is run at the work level, the leaves b of the ginseng a to be harvested are separated from the leaves of the ginseng to be non-harvested by the weeding device 11 and caused by the action of the soil loosening blade 15 to cause the leaves b. The ginseng a, which has easily come off, is pulled out of the field by the pulling-up device 14 and supplied to the beard root cutting device 16 to remove the beard root. The ginseng a from which the roots have been removed is further lifted and conveyed in a suspended state by the pulling-up device 14 and supplied to the leaf removing device 20, and the positioning device 22 of the leaf removing device 20 and the transporting device 25 for cutting are used. The ginseng a is supplied to the rotary cutter 35 to cut and remove the leaves b while preventing the ginseng a from hitting the rotary cutter 35, and the ginseng a from which the leaves b have been removed is dropped to the transport start end side of the root vegetable conveyor 40. Supply. The discharged leaves separated from the ginseng a are transported to the rear of the cutter 35 by the transport device 25 for cutting and the transport device 30 for leaves and dropped. At this time, as shown in FIG. 5, the base end side of the leaf discharge is transported by the cutting transport device 25, and the leaf tip side is transported by the leaf discharge transport device 30, and the leaf tip side precedes the base end side. Due to being transported, the leaves are discharged in a slightly rearwardly inclined position, which is located on the rear side toward the leaf tip side, and falls in a state in which the leaves are not easily caught by the transport device. The leaves discharged from the transport devices 25 and 30 are discharged from the transport devices 25 and 30 and the cutter 35.
Is dropped on a chute 38 whose base end is supported by a cover 37 that covers the periphery of the chrysanthemum. Release.

As shown in FIGS. 12 and 13, the root vegetable conveyor 40 has a pair of left and right brackets 6 erected at the rear end of the body frame 3 of the traveling machine body. The leaf removing device 2 is supported at the front end side.
The pair of conveyor frames 42 are rotatably mounted on a pair of left and right conveyor frames 42 located below the positioning device 22 at a position between the front ends of the two conveyor frames 42, between the intermediate parts, and between the rear ends. The conveyor belt 44 is rotatably supported via the belt roller 43, and a belt roller 43 on the rear end side is supported by a roller support shaft 43a, and one end of the roller support shaft 43a is connected to the conveyor drive shaft. The conveyor belt 41 is driven by the conveyor drive shaft 41 via a gear mechanism interlocked with one end of the conveyor belt 41.

Thus, when the leaf removing device 20 cuts the leaf b and drops the ginseng a from the cutting transport device 25, the root vegetable conveyor 40 transfers the ginseng a to the conveyor belt 4.
4 and is placed on the conveyor belt 44 and conveyed to the rear side of the machine.

As shown in FIGS. 2, 12 and the like, a guide roller 57 is movably provided above the conveying end of the conveyor belt 44 in the root vegetable conveyor 40. The guide roller 57 has a rotation axis that is inclined with respect to the conveying direction of the root vegetable conveyor 40, and the end located on the sorting conveyor 48 side is closer to the root vegetable conveyor 40 than the opposite end.
The ginseng a, which is transported by the root vegetable conveyor 40, is guided from the root vegetable conveyor 40 to move laterally outward from the root vegetable conveyor 40 by the above-mentioned positioning attitude and rotation, and is moved to the sorting conveyor 48. Let it.

The sorting conveyor 48 is composed of a plurality of drivable rollers arranged side by side in the lateral direction of the machine body, and the operating unit 2 feeds the ginseng a from the root vegetable conveyor 40 from the lateral end of the traveling machine body where the harvesting unit 10 is located. It is conveyed toward the other end where it is located and is supplied to the collection unit 50. The sorting conveyor 48 is located at the rear end of the traveling machine so that an operator can walk the rear side of the sorting conveyor 48 and perform sorting while moving following the machine. To be transported.

The collecting section 50 places a container 54 such as a container, and sends the ginseng a to the container 54 by the sorting conveyor 48 to collect.

The small carrier 51 is used to mount an empty or carrot-collected container 54, etc., so that it can be swung up and down around a horizontal shaft core 51a disposed at one end. Is connected to the rear end of the body frame 3 of the traveling body. That is, the small carrier 51 is moved to the shaft 51a.
When the swinging operation is performed around the rear side of the machine body and the mounting posture is extended to the rear side of the collection unit 50, the small carrier 51 is in the use posture. When the free end side of the small carrier 51 is set in the mounting position in which the small carrier 51 enters the collecting unit 50, the small carrier 51 is in the storage posture folded in the collecting unit 50.

The large carrier 52 is used to mount an empty or carrot-collected container 54, etc., so that the large carrier 52 can be swingably operated around a longitudinal axis 52a disposed at one end of the machine. It is connected to the lateral end of the body frame 3 of the traveling body. That is, as shown in FIG. 14, one end of the reinforcing rod 52 b attached to the back side of the large carrier 52 by lowering and swinging the large carrier 52 around the axis 52 a is positioned on the lower surface of the lateral end of the body frame 3. When the mounting position is set to be abutted and received and supported, the large loading platform 52
2c is in a use posture such that the container 2 and the like are projected horizontally or substantially horizontally outward of the body with respect to the collection unit 50 and the containers 54 and the like can be loaded. When the large carrier 52 is swung up and down around the axis 52a to have a mounting posture extending upward from the carrier supporting portion of the body frame 3, the large carrier 52 is positioned more inside the machine than in the use posture. After retirement, the loading surface 52c is in a storage attitude along the vertical direction of the machine body on the lateral outside of the machine body with respect to the collection unit 50. In this case, the locking member extending from the traveling body side is locked to the large loading platform 52, and the large loading platform 52 is fixed in the storage posture. An auxiliary carrier 55 is connected to the rear end of the large carrier 52 via a connection link 55a. The auxiliary loading platform 55 is swung toward the large loading platform 52 by the rotation of the connecting link 55a with respect to the large loading platform 52 and the auxiliary loading platform 55, and is placed in the retracted state by being superimposed on the loading surface 52c thereof, thereby being in the retracted state. And is extended to the rear from the large carrier 52 to be in a use state.

As shown in FIG. 12, the root vegetable conveyor 4
The left and right conveyor frames 42 are attached to the left and right brackets 6 of the body frame 3, and the conveyor drive shaft 41 penetrates the left and right conveyor frames 42 and the brackets 6 so as to be rotatable. The conveyor drive shaft 41, which is located on the side of the transport end, swings up and down with respect to the traveling machine body around a shaft center 41a of the machine drive sideways.

As shown in FIGS. 12 and 13, a link body whose upper end is rotatably connected to both ends of a support rod 45 that is connected across the left and right conveyor frames 42 at the transport start end of the root vegetable conveyor 40. By root vegetable conveyor 4
A pair of right and left legs 46 are formed, and the front end side is slidably inserted into an elongated hole 46a in the machine body vertical direction provided in each of the leg portions 46, and the base end side is fastened and fixed to the main frame 13a. The member constitutes a conveyor elevating operation body 47a provided on the harvesting unit frame so as to ascend and descend with respect to the traveling machine body together with the harvesting unit frame. The pair of left and right conveyor elevating operation units 47a and the pair of left and right legs 46 Thus, the adjusting mechanism 47 is configured to automatically swing the root vegetable conveyor 40 up and down around the axis 43a in association with the lifting and lowering of the harvesting unit 10 with respect to the traveling machine.

That is, as shown in FIG. 12 (a), when the harvesting unit 10 moves up and down in the low-level lifting area LH at the lower end side of the lifting area H in which the harvesting unit 10 can be raised and lowered, each conveyor lifting operation unit 47a only moves inside the long hole 46a of the leg 46, and does not push up or support the leg 46. The left and right legs 46 are supported by the support portions 3a provided on the body frame 3 of the traveling body. The root vegetable conveyor 40 is received and supported, and the transport start end side of the root vegetable conveyor 40 is supported at a predetermined arrangement level.
, And the mounting posture for transporting the ginseng a from the harvesting unit 10 in the rearward direction of the machine body for the support by the bracket 6 of the machine body frame 3 is maintained. As shown in FIG. 12 (b), when the harvesting unit 10 moves up and down in the high-level lifting area HH on the rising end side of the lower-level lifting area LH of the lifting area H, each conveyor lifting operation is performed. Body 47
a is located at the upper end of the long hole 46 a of the leg 46, the root 46 is raised by the lifting cylinder 5 to raise the root 46, and the lowering operation by the lift cylinder 5 is performed. Legs 46 for
The root vegetable conveyor 40 is lowered by receiving and supporting the lowering operation. As the low-level ascending / descending area portion LH, an ascending / descending area between the highest height and the descending end which is set so that the harvesting unit 10 is lifted during the harvesting operation is set.

Therefore, the adjusting mechanism 47 adjusts the root vegetable conveyor 40 as follows. That is, when the harvesting unit 10 is located in the low-level side elevating area LH, the harvesting unit 10
Conveyor 40 is adjusted so that the root mounting conveyor 40 does not swing up and down to maintain the mounting position for transportation even if the harvesting unit 1
When 0 is located in the high-level side elevating area HH, if the harvesting unit 10 swings up and down, the root vegetable conveyor 4 follows it.
0 is adjusted so as to swing up and down in the same direction as the elevating direction of the harvesting unit 10. Accordingly, when performing the harvesting operation, even if the weeding device 11, the soil loosening blade 15, and the pulling-up device 14 of the harvesting unit 10 are adjusted in height, the root vegetable conveyor 40 maintains the mounting posture for conveyance. Thus, the operation can be performed while smoothly supplying the ginseng a from the harvesting unit 10 to the sorting conveyor 48. Then, when traveling without harvesting work such as turning, when the harvesting unit 10 is raised, the root vegetable conveyor 40 also rises, and the harvesting unit 10 can be lifted sufficiently high and run.

The transmission structures of the left and right device sections in the leaf removing device 20 are configured as shown in FIGS. That is, the input shaft 21a of the transmission case 21
The first rotary transmission shaft 21c driven by the one end side being interlocked via the bevel gear 21b to the transmission case 21
Is provided between the input shaft 21a and the drive shaft 36 of the rotary cutter 35 in parallel with the transport direction of the positioning device 22 and the transport device 25 for cutting, and an intermediate portion of the first rotary transmission shaft 21c is provided. A bevel gear rotatably mounted integrally with the first rotary transmission shaft 21c;
Chain drive shaft 23c via a gear mechanism G1 comprising a bevel gear integrally rotatably mounted on the drive shaft 23c.
It is linked to. An end of the first rotary transmission shaft 21c on the side opposite to the input side is bevelly mounted on the first rotary transmission shaft 21c so as to be rotatable integrally with the first rotary transmission shaft 21c, and is integrally rotatably mounted on the drive shaft 36 of the rotary cutter 35. It is linked to the cutter drive shaft 36 via a gear mechanism G2 including a bevel gear. The first end is linked to the cutter drive shaft 36 via the bevel gear 21d, so that the first
The second driven by the driving force from the rotary transmission shaft 21c
The rotary transmission shaft 21 e is connected to the cutter drive shaft 36 inside the transmission case 21 and the endless transport belt 2 of the transport device 25 for cutting.
7 is provided so as to rotate around the same axis as the first rotation transmission shaft 21c, and the other end of the second rotation transmission shaft 21e is connected to the second rotation transmission shaft 21e. It is interlocked with the belt drive shaft 28 via a gear mechanism G3 including a bevel gear that is integrally rotatably mounted on the transmission shaft 21e and a bevel gear that is integrally rotatable with the belt drive shaft 28.

As shown in FIG. 7 and FIG.
5 is connected to the first and second rotary transmission shafts 2.
1c, 21e via the gear mechanism G2 and the bevel gear 21d, and a rotating cylinder shaft 36a supported only rotatably by the transmission case 21; and the rotating cylinder shaft 36a A cutter support shaft 36b is fitted inside so as to be freely slidable in the core direction and has an upper end portion rotatably connected to the rotary cutter 35 integrally. The upper end portion 36c of the rotary cylinder shaft 36a is formed as a hexagonal cylinder shaft, and the upper end portion of the cutter support shaft 36b is formed as a hexagonal shaft that is integrally rotatably engaged with the upper end portion 36c of the rotary cylinder shaft 36a. As a result, the cutter support shaft 3
6b is connected so as to rotate integrally with the rotary cylinder shaft 36a. An adjusting screw shaft 81 having a distal end connected via a connector 80 to an end of the cutter support shaft 36b protruding downward from the transmission case 21 is supported by a support member whose base end is fixed to the transmission case 21. Thread portion 82 on the tip side of 82
and a height adjusting mechanism of the rotary cutter 35 so as to adjust the cutting position of the leaf by the rotary cutter 35 by rotating the adjusting screw shaft 81.

That is, the connecting member 80 is connected to the cutter shaft 3
6b is attached to the end of the cutter support shaft 36b via a bearing 80a so as to be relatively rotated, and is engaged by a retaining bolt 83 or the like so as not to relatively move in the axial direction of the cutter support shaft 36b. Locking part 8 that goes into long hole
0b is engaged so as to slide in the axial direction of the cutter support shaft 36b while being prevented from rotating. The distal end of the adjusting screw shaft 81 is mounted so as to rotate relative to the connecting tool 80, and is engaged by a positioning nut 84 and a retaining ring so as to push and pull the connecting tool 80. Thus, the operating tool 81a attached to the lower end of the adjusting screw shaft 81 is rotated. Then, the adjusting screw shaft 81 rotates in the forward or reverse rotation direction with respect to the support 82, and
0, the cutter support shaft 36b is slid upward or downward with respect to the rotary cylinder shaft 36a. Cutter support shaft 36b
Rises with respect to the rotary cylinder shaft 36a.
5 rises together with the cutter support shaft 36b and the rotary cutter 3
5, the height of the rotary cutter 35 with respect to the positioning roller 24a of the rotary cutter 35 becomes higher than before the adjustment. When the cutter support shaft 36b is lowered with respect to the rotary cylinder shaft 36a, the rotary cutter 35 is lowered together with the cutter support shaft 36b, and the mounting height of the rotary cutter 35 with respect to the transmission case 21 is reduced. The height with respect to the positioning roller 24a becomes lower than before adjustment.

As shown in FIG. 15, the rotational driving force of the engine E is transmitted to the input portion of the selection transmission 70, and the rotation driving force of the output sprocket 70a of the selection transmission 70 is transmitted by the transmission chain 71 to the selection conveyor. The drive sprocket 48a is configured to transmit power to the drive sprocket 48a.
That is, the selection transmission device 70 includes an arm-type operation unit 70.
The gear can be shifted between the standard state and the low-speed state by swinging the b. When the gear is shifted to the standard state, the conveying speed at which the sorting conveyor 48 conveys the ginseng a from the root vegetable conveyor 40 toward the collection unit 50 is adjusted. Conveyor 4 so that the sorting speed is appropriate for the user to perform the sorting process.
8 is driven at a standard speed and the speed is changed to a low speed state, the sorting conveyor 48 conveys the ginseng a from the root vegetable conveyor 40 toward the collection unit 50, and the transfer speed of the container is lower than the sorting speed. Conveyor 4 to become
8 is driven at a speed lower than the standard speed. The driving force of the engine E is transmitted to the traveling device 1, the harvesting unit 10, and both conveyors 40 and 48.
First transmitted to the traveling device 1 at the output of the engine E.
And a traveling harvesting system for transmitting to the harvesting unit 10 and a conveyor system for transmitting to the root vegetable conveyor 40 and the sorting conveyor 48, and further, a root vegetable system for transmitting the conveyor system to the root vegetable conveyor 40 on the way, and a sorting transmission 70.
It is branched and transmitted to the sorting system that transmits to. Thus, when the selection transmission 70 is shifted, only the driving speed of the selection conveyor 48 changes without changing the driving speeds of the traveling device 1, the harvesting unit 10, and the root vegetable conveyor 40.

A stopper 74 acting on the carrot a transported by the sorting conveyor 48 is provided at the transport end of the sorting conveyor 48.
Is provided. The stopper 74 is made of a plate slidably mounted on a guide rail 75 erected at the end of the container mounting deck of the collection unit 50, and can be moved up and down with respect to the guide rail 75. As a result, the upper end of the stopper 74 is located at a higher level than the transport surface of the sorting conveyor 48 as shown by a two-dot chain line in FIG. 15, and the upper end of the stopper 74 is transported by the sorting conveyor 48 as shown by a solid line in FIG. It switches to the lowered mounting position located at a lower level than the surface. Then, the stopper 74 in the ascending mounting posture is blocked by the ginseng a which has been conveyed by the sorting conveyor 48 and has reached the end of the sorting conveyor 48, and the ginseng a moves from this part to the collecting part 50 and falls. Activate to prevent the
The stopper 74 in the lowered mounting position releases the damming action on the ginseng a conveyed by the sorting conveyor 48, and the ginseng a conveyed by the sorting conveyor 48.
Are released from the end of the sorting conveyor 48 to the collecting section 5.

A stopper sensor 76 attached to the guide rail 75 so as to detect whether the stopper 74 is in the operation state or the operation release state, and a shift control means 77 linked to the stopper sensor 76.
And a shift operating device 78 that performs a shift operation of the selection transmission 70 by an electric transmission motor 78a linked to the shift control means 77, thereby forming a linkage mechanism 79 in which the stopper 74 and the selection transmission 70 are linked. I have.

The speed change operation device 78 is provided with the selection speed change device 7.
A swinging link 78c, the free end of which is connected to the operating portion 70b via a rod 78b;
sector gear 78d interlocking with the swing link 78c via a link support shaft integrally rotatably connected to the base end of the shaft c.
And the speed change motor 78a whose output gear meshes with the sector gear 78d. Thus, the speed change operation device 78 drives the speed change motor 78a in the forward rotation or reverse rotation direction, so that the operation force of the selection speed change device 70
Swing b to the standard side or low speed side.

The stopper sensor 76 includes the stopper 7
4 is a detection switch configured to be switched between on and off by a switch operating portion provided as a detection target portion provided on the stopper 74 as the device 4 is switched between the operation state and the operation release state. By being in one of the cut states, it is detected that the stopper 74 is in the operating state, and by being in the other state of on and off, by detecting that the stopper 74 is in the released state,
These detection results are output to the shift control unit 77 as electric signals.

The shift control means 77 is constituted by a microcomputer, and includes information from the stopper sensor 76,
Based on information from a shift sensor 78e provided in the selection transmission 70 so as to detect the shift state of the selection transmission 70 based on the operation position of the operation section 70b, a predetermined value is supplied to the drive of the transmission motor 78a. By outputting an operation command to operate the speed change motor 78a, the speed change operation device 7 is operated.
8 to operate the selection transmission 70 to change the speed. That is, when the stopper sensor 76 detects a state where the stopper 74 is switched to the operating state, the transmission motor 7 is controlled based on the information from the stopper sensor 74.
The deceleration command is output to the drive unit 8a to drive the speed change motor 78a to the low speed side, and the shift operation device 78 is operated to the low speed side to shift the selection transmission 70 to the low speed side. When the selection transmission 70 enters a predetermined low-speed state, the transmission sensor 7
Based on the information from 8e, the drive of the speed change motor 78a is stopped to maintain the selection transmission 70 in the low speed state.
When the stopper sensor 76 enters a state of detecting the switch of the stopper 74 to the release state, the speed change motor 78 based on the information from the stopper sensor 76.
A standard command is output to the drive unit a to drive the transmission motor 78a to the standard side, and the shift operation device 78 is operated to the standard side to shift the selected transmission 70 to the standard side. When the selection transmission 70 is in a predetermined standard state, the transmission sensor 78
Based on the information from e, the drive of the speed change motor 78a is stopped to maintain the selection transmission 70 in the standard state.

Thus, when performing the sorting process, the collection unit 5
The empty container 54 is set at 0, and the stopper 74 is switched to the operation release state. Then, the selection transmission 70 is shifted to the standard state for the linkage mechanism 79, and the selection conveyor 48 is shifted.
Is driven at a sorting speed by a driving force transmitted from the engine E via the sorting transmission 70, and transports the ginseng a from the root vegetable conveyor 40 toward the collection unit 50 at a sorting transport speed appropriate for the sorting process. Then, the ginseng a that has been sorted and left on the conveyor is dropped into the collecting unit 50. Thereby, the ginseng a to be harvested after the sorting process is placed in the container 5
4 can be collected. When this collection proceeds and the container 54 is full, the stopper 74 is switched to the operating state. Then, the harvesting operation is continued at the normal traveling speed, and the harvesting unit 10
Ginseng a is sent to the sorting conveyor 48 as usual, but the ginseng a conveyed by the sorting conveyor 48 is blocked by the stopper 74 so as not to move to the collecting section 50. As a result, when the full container 54 is taken out from the collecting unit 50 and the empty container 54 is set in the collecting unit 50, the ginseng a is sent to the collecting unit 50 in which the container 54 is not yet set and spills. The container 54 can be replaced while preventing a situation from occurring. At this time,
Due to the linkage mechanism 79, the selection transmission 70 is automatically shifted to a low speed state, and the selection conveyor 48 stops the ginseng a at a lower transfer speed than when performing the selection process.
Conveyed toward. As a result, the ginseng a is blocked by the stopper 74 and deposited on the sorting conveyor 48, and the ginseng a and the sorting conveyor 48 and the stopper 74 are accumulated.
And ginseng “a” is transported by the sorting conveyor 48, and another ginseng “a” or stopper 74
Even if a situation occurs in which the ginseng is pressed against the ginseng a, the amount of ginseng a that accumulates before the empty container 54 is newly installed in the collection unit 50 is suppressed, and the ginseng a caused by the slip and the pressing described above is suppressed. The container 54 can be replaced while hardly causing damage.

When the empty container 54 has been set in the collecting section 50, the stopper 74 is returned to the operation release state. Then, the blocking by the stopper 74 can be released, and the selection transmission device 70 automatically returns to the standard state because of the linkage mechanism 79, and the selection conveyor 48 conveys the ginseng a from the root vegetable conveyor 40 at the selection conveyance speed. Thus, the sorting process and the collection of the processed ginseng a in the container 54 can be performed.
[Another Embodiment] Instead of the slide type stopper 74, a rotary type or a detachable type stopper may be employed.

Instead of the electric link mechanism 79 including the shift control means 77 and the like, a stopper 74 and the selection transmission 7
Alternatively, a mechanical linkage mechanism that links the 0 operation unit 70b with a link, a rod, or the like may be employed.

The present invention can be applied to harvesters for harvesting various crops such as radishes and onions in addition to carrots. These ginsengs, radishes and onions are collectively referred to as root vegetables.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding ginseng harvester.

FIG. 2 is a plan view of the entire riding ginseng harvester.

FIG. 3 is a side view of the leaf removing device and the leaf discharge device.

FIG. 4 is a plan view of a transmission case of the leaf removing device.

FIG. 5 is an explanatory view showing a discharge state of leaf discharge.

FIG. 6 is a plan view of the leaf discharging and conveying device.

FIG. 7 is a sectional view of a rotary cutter mounting structure.

FIG. 8 is a plan view showing the engagement between the connector and the support.

FIG. 9 is a sectional view of a positioning device.

FIG. 10 is a sectional view of a positioning device, a transport device for cutting, and a leaf discharge transport device.

FIG. 11 is a plan view of a part of the positioning chain.

FIG. 12 is a side view of a root vegetable conveyor.

FIG. 13 is a front view of an adjustment mechanism.

FIG. 14 is an explanatory diagram showing a change in the attitude of the carrier.

FIG. 15 is a rear view of a sorting conveyor and a collecting unit.

[Explanation of symbols]

 Reference Signs List 10 Harvesting part 48 Sorting conveyor 50 Collection part 54 Container 70 Sorting transmission 74 Stopper 79 Linkage mechanism a Root vegetable b Leaf part

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masato Sugioka 64 Ishizu-Kitacho, Sakai City, Osaka Prefecture Inside Kubota Sakai Works Co., Ltd. 2B072 AA10 BA30 CA12 CA15 CB02 DA02 DA12 EA06

Claims (2)

[Claims] 1. A harvesting unit that lifts root vegetables from a field and removes leaves from the root vegetables, a sorting conveyor that transports the root vegetables from the harvesting unit, and a collection that installs a container so that the root vegetables are sent from the sorting conveyor. Root crop harvesting machine, comprising: a sorting transmission device that changes a driving speed of the sorting conveyor, and a stopper that acts on root vegetables conveyed by the sorting conveyor so as not to move to the collection unit. Root vegetables harvester, which can be freely switched between an operating state and an operation releasing state. 2. The root vegetable according to claim 1, further comprising a linkage mechanism that links the stopper and the selection transmission so that the selection transmission is switched to a lower speed side when the stopper is switched to the operating state. Kind harvester.