JP3513461B2 - Root crop harvester cutter mounting structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for attaching a cutter of a root vegetable harvester, which is configured to cut a leaf of a root vegetable extracted from a field by a rotary cutter which can be driven and rotated.

[0002]

2. Description of the Related Art In the root vegetable harvester described above, it is convenient to install a rotary cutter so that the position of the rotary cutter can be changed in the direction along the axis of rotation so that the cutting position of the root of the root vegetable can be adjusted.
For this reason, conventionally, there is one disclosed in, for example, Japanese Patent Laid-Open No. 7-79757. That is, the cutter support shaft that rotatably supports the rotary cutter integrally penetrates the tubular drive rotor that is rotatably supported by the frame. The cutter support shaft is integrally and rotatably engaged with the drive rotating body by the spline portion, and is driven by the drive rotating body. An adjusting member, which is screwed with a nut on the screw on one end side of the cutter support shaft, is supported on the end of the drive rotator so that only relative rotation is possible.By rotating this adjusting member, the cutter support can be rotated. There has been a device in which the shaft can be slidably adjusted with respect to the driving rotating body and the mounting position of the rotary cutter can be adjusted.

[0003]

In the case of the above-mentioned conventional cutter mounting technique, the cutter support shaft is supported by the driving rotary member by the spline portion and the screw portion, but the screw portion is supported by the adjusting member. Has been done. It is necessary to provide an assembling accommodation between the adjusting member and the driving rotary body for facilitating the rotating operation of the adjusting member. Therefore, the support of the cutter support shaft by the drive rotating body tends to be unstable. The object of the present invention is that the position of the rotary cutter can be adjusted, the support of the cutter support shaft by the drive rotating body and the power transmission to the rotary cutter can be stably performed, and the cost is relatively low. It is to provide a structure for attaching a cutter of a root vegetable harvester.

[0004]

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

[Structure] In the structure of the cutter mounting part of the root vegetable harvester, which is constructed so that the root part of the root vegetables pulled out from the field is cut by a rotary cutter which can be driven and rotated, the rotary cutter is integrally rotated. A drive rotor that freely supports a cutter support shaft that penetrates the cutter support shaft in a direction along the rotary shaft center of the rotary cutter and that is rotatably supported by a support frame. A passive part that is attached to the support frame via the cutter support shaft and is slidably and integrally rotatably engaged with the cutter support shaft on the inner peripheral side of the drive rotating body and driven by the drive rotating body;
The driven rotating body is provided with a supported portion that is slidably abutted in the direction along the rotation axis of the rotary cutter and is supported by the driving rotating body. It is larger than the outer diameter of the supported portion.

[Operation] The cutter support shaft penetrates the drive rotor in a slidable manner, and if this slide adjustment is performed, the mounting position of the cutter support shaft with respect to the drive rotor is changed to support the rotary cutter. The mounting position on the frame changes in the direction along the axis of rotation.

Since the cutter support shaft is directly supported by contacting the driving rotor with both the passive part and the supported part, direct support by the driving rotor is performed only by the spline part which is the passive part. In contrast, the cutter support shaft is driven while being supported by the drive rotating body so as not to rattle.

The power transmission from the driving rotary body to the cutter support shaft is performed by the passive portion having a larger outer diameter than the supported portion, and the outer diameter of the supported portion is only that supported by the driving rotary body. Since it is smaller than the outer diameter of the passive part, the outer diameter of the supported part is made stronger while the power is strongly transmitted from the drive rotor to the cutter support shaft than when the outer diameter of the passive part is the same as that of the supported part. The cutter support shaft can be driven by the rotary drive body while making the cutter support shaft lighter and smaller than that having the same large outer diameter as that of the passive portion.

[Effect] Therefore, by slidingly adjusting the cutter support, the mounting position of the rotary cutter can be changed to adjust the cutting position of the leaf portion. On the other hand, the cutter support shaft is stably supported by the drive rotor to prevent it from rattling, and the power is firmly transmitted from the drive rotor to the cutter support shaft to prevent the rotary cutter from changing its posture. While firmly driving and supporting the rotary cutter with a relatively compact mounting structure by making the cutter support shaft relatively light and small, while preventing the cutter from contacting the root vegetables and scratching the leaves, It can be cut at the desired location.

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

[Configuration] In the configuration of the invention according to claim 1, a driveable rotary transmission shaft having a drive bevel gear for transmitting power to the drive rotation body is integrally rotatable, and the drive rotation body is provided with the cutter support shaft. A rotary cylinder shaft that penetrates through the passive part and the supported part so as to be slidable and integrally rotatable, and a passive shaft that meshes with the drive bevel gear and is externally fitted to the rotary cylinder shaft so as to be integrally rotatable. A bell gear, and the passive bevel gear is attached to an end of the rotary cylinder shaft on a side corresponding to the supported portion of the cutter support shaft, and the passive bevel gear of the cutter support shaft of the rotary cylinder shaft is attached. The end portion on the side corresponding to the portion is rotatably supported by the support frame.

[Operation] Since the power is transmitted to the driving rotating body by the rotation transmission shaft, the rotation transmission shaft as the transmission means can be used while making the supporting frame small in size as compared with the case of transmitting the power by the transmission chain. Etc. can be covered with a support frame.

As the rotating cylinder shaft, it is possible to employ a rotating cylinder shaft having an outer diameter smaller than the outer diameter at the portion corresponding to the supported portion of the cutter support shaft and at the portion corresponding to the passive portion of the cutter support shaft. In this case, since the passive bevel gear is attached to the side corresponding to the supported portion of the side corresponding to the supported portion and the side corresponding to the passive portion of the cutter support shaft of the rotary cylinder shaft, it corresponds to the passive portion. Rather than mounting a passive bevel gear on the side, the portion of the support frame that supports the rotary cylinder shaft is formed smaller, while the rotary cylinder shaft is supported by the support frame on both the side with and without the passive bevel gear.

[Effect] Therefore, when the transmission means such as the rotary transmission shaft is covered with the support frame, it is supported not only from the surface for covering the transmission means but also from the surface supporting the rotary cylinder shaft and the passive bevel gear. The frame can be made smaller and more compact, and soil and mud that fall from root vegetables can be made less likely to accumulate on the support frame.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a pair of left and right crawler type traveling devices 1, a driver section 2 provided with a driver seat 2a for riding and driving, and a position below the driver seat 2a. A pair of left and right weeding devices 11, on the lateral side of the driving unit 2 of the traveling machine body having a driving unit having an engine E
11, the harvesting section 10 including one wheel 12 for supporting the harvesting section and the like is connected. A root vegetable conveyor 40 whose front end side is located below the leaf removing device 20 of the harvesting section 10 above a pair of right and left main frames 13a of the harvesting section of the harvesting section 10, which are in the front-rear direction, and this root vegetable conveyor 40. The sorting conveyor 48 located at the rear end of the traveling machine body on the side of the driving unit side on the rear end side, and the sorting conveyor 4
The collection unit 5 located behind the operation unit 2 on the transport end side of 8
0, the cargo bed 51 located on the rear side of the collecting unit 50, and the lateral side of the traveling machine body opposite to the side where the harvesting unit 10 is located from the lateral outside of the operating unit 2 to the lateral outside of the collecting unit 50. The long cargo bed 52 that is long in the front-rear direction of the machine body, the operating unit 2, the heavy cargo platform 52, the collecting unit 50, the sorting conveyor 48, and the harvesting unit 10.
Each of the container loading portions 53 surrounded by and is provided on the traveling machine body. The driving force of the engine E is configured to be transmitted to the harvesting section 10 and the conveyors 40 and 48, and thus a riding-type carrot harvesting machine is configured. In this carrot harvesting machine, the weeding devices 11 on the left and right of the harvesting section 10 are divided into both lateral sides of the row of carrots vegetated in the field, and the traveling machine body is moved so as to move along the carrot row. By
The carrot a is pulled out from the field with the leaf b attached, and the whisker root attached to the lower end side of the carrot a and the leaf b attached to the upper end side are removed. The lost carrot a is collected in the container 54 such as a container by the collecting unit 50, and the whiskers and leaves b removed from the carrot a are discharged to the field. Specifically, the configuration is as follows. I am doing it.

As shown in FIGS. 1 and 5, a mounting cylinder 13b, which also serves as a connecting frame for connecting the base end sides of the pair of left and right main frames 13a, is provided upright at the rear portion of the machine body frame 3 of the traveling machine body. A pair of left and right supports 4
And a pair of left and right main frames 13a which are supported by the body frame 3 of the traveling machine body so as to be swingable up and down around the machine body laterally oriented axis P of the machine body frame 3 of the traveling machine body. Each mainframe 1
3a, a rear column 13c standing upright, a harvesting part transmission case 60 mounted between the intermediate parts of both main frames 13a, and a front end of the harvesting part transmission case 60 extending forward and upward from the fuselage. The pulling-out transmission case 61, the weeding transmission case 62 extending from one end side of the harvesting section transmission case 60 toward the front of the machine, and the front support columns standing on both end sides of the harvesting section transmission case 60. Thirteen
The harvesting unit frame is constituted by d and.

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

As shown in FIG. 1, FIG. 2, etc., the harvesting section frame, and the pulling-out frame mounted on the harvesting frame over the tip end side of the main frame 13a and the extension end side of the pulling-out transmission case 61. Device 14, the right side weeding device 11 attached to the lower end side of the right side device portion of the pulling-up device 14 and the extension end side of the weeding transmission case 62, and the upper end of the right side weeding device 11. The weeding device 1 on the left side mounted across the transmission case 63 extending from the side and the lower end side of the left side device portion of the pulling device 14.
1, a soil loosening blade 15 supported by a support arm 13f extending from the tip side of each main frame 13a, and a whisker root attached over 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 the cutting device 16 and the leaf removing device 20 mounted over the upper ends of the front support column 13d and the rear support column 13c.

The left and right weeding devices 11 are driven by an endless rotating chain provided inside the raising and weeding case 11a so as to be rotatable and driven, and cause the claws 11b to be raised.
It is composed of a raising weeding device that moves upward in a mounting posture that projects forward from a, and a rake rod 11c that extends forward from the lower end side of this raising weeding device, and is scattered in the field by this rake rod 11c. Scrape up the straw debris, or pick up the leaf part b of the ginseng a to be harvested that is vegetated in the field, and cause the leaf part of the ginseng to be harvested to move up and move the weeding device. Treat grass and stir.

The left and right soil loosening blades 15 enter the soil on the side of the carrot a to be harvested, and the lifting device 14 is used for the carrot a.
When pulling up, the soil is loosened so that the carrot a can easily escape from the soil.

The pulling device 14 is an endless conveyor belt 14
The left side device part is rotatably supported by the pull-out frame in a rearward rising inclination position in which a is located at a higher arrangement level toward the rear side of the machine body, and like the left side device part, the endless conveyor belt is also provided. 14a is located at a higher arrangement level toward the rear side of the machine body, and is composed of the right side device portion that is rotatably supported by the pulling-out frame in a posture of a rearward rising inclination, and the weeding device 11 and the loosening blade. The left and right endless conveyor belts 14a for the leaves b of the carrot a after the action of 15
The carrot a to be harvested is picked up from the field with the leaf portion b attached, and is conveyed upward in the hanging posture while being pinched and lifted and conveyed in the rearward direction of the machine body.

The beard root cutting device 16 includes a guide body arranged in a path along which the carrot a conveyed by the pulling device 14 moves, a rotary cutter 16a rotatably provided inside the guide body, and a rotary cutter 16a. A rotary cutter 1 that is composed of an electric motor 16b that drives the cutter 16a, and that uses the guide body to rotate the beard root attached to the tip end side of the carrot a that the pulling device 14 pulls up from the field and conveys.
6a, cut with this cutter 16a to separate from carrot a, and the separated beard roots are dropped into the field and released.

As shown in FIGS. 1 and 6, the leaf removing device 20 includes a pair of left and right casting transmission cases 21 supported by the front column 13d and the rear column 13c of the harvesting frame. The positioning device 22 provided above the front end sides of both transmission cases 21, the cutting conveyance device 25 provided above the rear ends of both transmission cases 21, and the cutting conveyance device 25 and the pulling device 14 described above. By the leaf discharging and conveying device 30 provided between the conveying end portion and the rotary cutter 35 which is arranged in the middle of the cutting conveying device 25 and is rotatably mounted on the upper side of both transmission cases 21. Configured.

As shown in FIG. 6 and the like, the positioning device 22
Winds an endless positioning chain 24 around a pair of front and rear sprockets 23a, 23b rotatably attached to the upper side of each of the left and right transmission cases 21, and both the left and right positioning chains 24 can be driven rearward. It is configured to be driven by the sprocket 23b.

That is, as shown in FIGS. 12 and 14, each link plate of the left and right positioning chains 24 is slidably provided with a positioning rod 24b having a positioning roller 24a rotatably attached to its tip end side. At the same time, a holding spring 24d arranged between the rod support 24c included in the link plate of the positioning chain 24 and the spring receiving plate included in the positioning rod 24b.
Is fitted onto the positioning rod 24b. In the middle of the pulling-out device 14, the leaf part b of the carrot a that is being lifted and conveyed by the pulling-up device 14 is positioned on the left and right between the part of the pulling-up device 14 held by the endless conveyor belt 14a and the carrot a. It enters between the positioning rollers 24a in the chain 24, and the pulling-out device 14 is still in the carrot a after this.
Then, the positioning device 22 holds the leaf b by the left and right positioning chains 24 and transfers the leaf b toward the rotary cutter 35 in a suspended posture. At this time, there is a difference 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 the pulling device 14 lifts the carrot a. As a result, the carrot a is moved up between the left and right positioning rollers 24a and then moved rearward, so that the carrot a is raised. The carrot a on the transport end side of the positioning device 22 is as shown in FIG. The upper end of a comes into contact with the positioning roller 24a and acts as a stopper so that the positioning roller 24a does not rise further relative to the carrot a. With this, when the carrot a is supplied to the rotary cutter 35 and the leaf portion b thereof is cut, the positioning device 22 is cut at a portion slightly apart from the upper end of the carrot a. When the carrot a is supplied to the rotary cutter 35, the carrot a is positioned with respect to the rotary cutter 35.

As shown in FIG. 6 and the like, the cutting conveyance device 2
Reference numeral 5 denotes a pair of front and rear belt pulleys 26a and 26b rotatably attached to the upper sides of the left and right transmission cases 21, respectively.
The endless conveyor belt 27 is wound around the conveyor belt 27, and both the left and right conveyor belts 27 are driven by a rearwardly drivable belt pulley 26b.
The conveyance start end sides of the left and right conveyance belts 27 in the cutting conveyance device 25 are below the conveyance end portions of the pulling-up device 14,
The positioning device 22 is arranged above the transport end portion.
As a result, the cutting conveyance device 25 is moved to the positioning device 22.
The leaf part b of the carrot a after completion of the positioning by means of the left and right conveyor belts 27 is taken from the pulling-up device 14 and the positioning device 22, and is sandwiched, and conveyed in a hanging posture toward the rear of the machine to rotate the left and right cutters. Supply during 35. Then, the discharged leaves that have been cut by the cutter 35 and separated from the carrot a are sandwiched as they are, and further conveyed in the rearward direction of the machine body to release the sandwiched space behind the cutter 35.

As shown in FIGS. 6 and 9, the leaf discharging and conveying device 30 is rotatably provided with a frame supported by the frame of the left side device portion of the pulling device 14 and the frame of the cutting conveying device 25. The endless chain 32 having a transporting protrusion is wound around the pair of front and rear sprockets 31a and 31b, and the endless chain 32 is configured to be driven by the front-side drivable sprocket 31a. The transport guide rail 33 extending in the front-rear direction of the machine body along the transport action portion is supported by the frame of the right side device portion of the pulling device 14.

As shown in FIG. 6, a chain 14c for transmitting power from the input shaft 21a of each of the left and right transmission cases 21 to a belt drive pulley 14b wound around the end of the endless conveyor belt of the pulling device 14 on the conveyor end side. In association with the power takeoff shaft 14d wound around, the driving force transmitted from the pulling-up and conveying device 14 drives the positioning chain 24 of the positioning device 22 and the endless conveying belt 27 of the cutting conveying device 25. There is. The positioning device 22 and the cutting transfer device 25 are controlled by the deceleration action of the transmission mechanism formed of a bevel gear provided inside the transmission case 21 and the diameters of the sprocket 23a and the pulley 26a around which the positioning chain 24 and the endless transfer belt 27 are wound. The conveying speed in the above is lower than the conveying speed in the pulling-up device 14. In other words, the conveyance end side of the pulling-out device 14 is in an arrangement state in which the distances to the positioning device 22 and the cutting conveyance device 25 become larger toward the conveyance end side.
When the positioning device 22 and the cutting transportation device 25 carry the carrot a, the leaf portion b is pulled between the positioning device 22 and the pulling-out device 14 and between the cutting transportation device 25 and the pulling-out device 14. Transport it so that it does not break.

The drive shaft 34 for driving the sprocket 31a on the front side of the leaf transporting device 30 is integrated with the belt drive pulley 14b wound around the transporting end side of the endless transporting belt 14a in the left device part of the pulling device 14. It is connected to the rotating pulley support shaft 14e through a universal joint, and is driven by the driving force transmitted from the pulling device 14 to 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, in the leaf discharging and conveying device 30, the end portion of the endless chain 32 is located at the leaf tip side of the portion of the leaf b from the positioning device 22 and the pulling-out device 14 that is received and held by the cutting and conveying device 25. And transport guide rail 33
It is carried by and sandwiched and conveyed along the conveyance guide rail 33 in the rearward direction of the machine body, and slightly ahead of the portion conveyed by the cutting conveyance device 25 even after being cut from the carrot a by the rotary cutter 35. The paper is conveyed and released slightly behind the cutting conveyance device 25 to release the nipping and drop it.

Thus, the harvesting section 10 drives the lift cylinder 5 to swing up and down about the axis P for swinging the harvesting section frame by the lift cylinder 5 and to the traveling machine body. Up and down, weeding device 11
Is located near the field, and the soil loosening blade 15 lowers to the working level where it enters the soil, or the weeding device 11 and the soil loosening blade 15 rise to the non-working level that floats from the farmland. Then, when the traveling machine is run at the working level, the leaf part b of the ginseng a to be harvested is caused to separate from the leaves of the ginseng to be unharvested by the weeding device 11, and caused by the action of the soil loosening blade 15 from the soil. The carrot a that has become easy to slip out is pulled out from the field by the pulling device 14 and is supplied to the beard cutting device 16 to remove the beard roots. The carrot a from which the beard roots have been removed is further lifted and conveyed by the pulling-out device 14 in a suspended state and supplied to the leaf part removing device 20, and by the positioning device 22 and the cutting carrying device 25 of the leaf part removing device 20. The carrot a is supplied to the rotary cutter 35 so as not to hit the rotary cutter 35 to cut and remove the leaf portion b, and the carrot a from which the leaf portion b is removed is dropped to the conveyance start end side of the root vegetable conveyor 40. To supply. The discharged leaves separated from the carrot a are conveyed to the rear of the cutter 35 by the cutting conveyer device 25 and the leaf conveyer device 30 and dropped. At this time, as shown in FIG. 8, the base end side of the leaf discharge is conveyed by the cutting conveyance device 25, the leaf tip side is conveyed by the leaf discharge conveyance device 30, and the leaf tip side precedes the base end side. Due to being transported, the discharged leaves are released in a slightly tilted posture, which is located on the rear side toward the leaf tip side, and falls in a state in which it is hard to be caught by the transport device. The leaves discharged from both the transport devices 25 and 30 are discharged from the both transport devices 25 and 30 and the cutter 35.
Is dropped onto a chute 38 whose base end side is supported by a cover 37 that surrounds the circumference of the plant, and the top of this chute 38 is lowered to the rear side of the machine body and dropped from the chute 38 on the rear side of the root vegetable conveyor 40 to the field. Release it.

As shown in FIGS. 15 and 16, the root vegetable conveyor 40 has a pair of left and right brackets 6 standing upright on the rear end of the machine body frame 3 of the traveling machine body. It is supported and the front end side is the leaf removing device 2
The pair of left and right conveyor frames 42 located below the positioning device 22 of 0 are rotatably mounted between the front end portions of both conveyor frame 42, between the intermediate portions, and between the rear end portions. The conveyor belt 44 is rotatably supported by the belt roller 43, and the belt roller 43 on the rear end side supports the roller support shaft 43a and one end side of the roller support shaft 43a on the conveyor drive shaft. The conveyor belt 44 is driven by the conveyor drive shaft 41 via a gear mechanism that is linked to one end of the conveyor belt 41.

As a result, when the leaf portion removing device 20 cuts the leaf portion b and drops the carrot a from the cutting conveying device 25, the root vegetable conveyor 40 transfers the carrot a to the conveyor belt 4
The sheet 4 is received at the start side of the conveyance, placed on the conveyor belt 44, and conveyed to the rear side of the machine body.

As shown in FIGS. 2 and 15, a guide roller 57 is movably provided above the conveyor end portion of the conveyor belt 44 of the root vegetable conveyor 40. The rotation axis of the guide roller 57 is inclined with respect to the conveyance direction of the root vegetable conveyor 40, and the end located on the side of the sorting conveyor 48 is more than the end on the opposite side.
The carrot a is conveyed to the sorting conveyor 48 by guiding the carrot a conveyed by the root vegetable conveyor 40 from the root vegetable conveyor 40 to the lateral outside of the carrot a by the arrangement attitude and rotation. Let

The sorting conveyor 48 is composed of a plurality of drivable rollers lined up in the lateral direction of the machine body. The carrot a from the root vegetable conveyor 40 is fed from the lateral end of the traveling machine body on the side where the harvesting section 10 is located to the operation section 2. It is conveyed toward the other end located and is supplied to the recovery unit 50. The sorting conveyor 48 is located at the rear end of the traveling machine body so that an operator can walk on the rear side of the sorting conveyor 48 and follow the machine body to perform the sorting process, and the transport speed thereof. To transport.

The collecting unit 50 is provided with a container 54 such as a container placed thereon, and the carrot a is sent into the container 54 by the sorting conveyor 48 and collected.

The luggage carrier 51 is used for mounting an empty container 54 for which carrots have been collected, and the like so that it can be rocked up and down around a lateral axis 51a of the fuselage arranged at one end. It is connected to the rear end of the body frame 3 of the traveling body. That is, the luggage carrier 51 is attached to the shaft center 51a.
When the swinging operation is performed to the rear side of the fuselage around and the mounting posture is extended to the rear side of the recovery unit 50, the small platform 51 is in the use posture. When the free end side of the small load platform 51 is in the mounting posture in which it is inserted into the collecting unit 50, the small load platform 51 is in the storage posture in which it is folded in the collecting unit 50.

The loading platform 52 is used for mounting an empty container 54 for which carrots have been collected, and the like so that it can be rocked around a longitudinal axis 52a of the machine body arranged at one end. It is connected to the lateral end of the machine body frame 3 of the traveling machine body. That is, as shown in FIG. 17, one end side of the reinforcing rod 52b attached to the rear surface side of the heavy load platform 52 by swinging the heavy load platform 52 downward around the axis 52a is located on the lower surface side of the lateral end portion of the machine body frame 3. When the mounting position is such that it abuts and receives and is supported, the large load platform 52 is mounted on the load mounting surface 5 of the load platform 52.
2c extends horizontally or almost horizontally to the lateral outside of the machine from the collecting unit 50 and is in a use posture so that containers 54 and the like can be loaded. Then, when the heavy load platform 52 is swung up and down around the axis 52a to have a mounting posture in which the heavy load platform 52 extends upward from the load platform support portion of the machine body frame 3, the heavy load platform 52 is located inside the machine body more than in the use posture. Retired, and the load carrying surface 52c on the lateral side of the machine body with respect to the recovery unit 50 is in the storage posture along the machine body vertical direction. In this case, the lock member extending from the traveling machine body side is locked to the heavy load platform 52 to fix the heavy load platform 52 in the retracted posture. In addition, an auxiliary loading platform 55 is connected to the rear end side of the large loading platform 52 via a connecting 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 on the loading surface 52c of the large loading platform 52 to be in a retracted state. It is put into a use state by swinging to the rear and extending backward from the luggage carrier 52.

As shown in FIG. 15, the root vegetable conveyor 4
The left and right conveyor frames 42 attached to the left and right brackets 6 of the machine body frame 3 rotatably penetrate the left and right conveyor frames 42 and the brackets 6, so that the root vegetable conveyor 40 is It swings up and down with respect to the traveling machine body around an axial center 41a of the conveyor drive shaft 41 located on the transporting end side in the machine transverse direction.

As shown in FIGS. 15 and 16, a link body whose upper end side is rotatably connected to both end sides of a support rod 45 connected to the left and right conveyor frames 42 on the conveying start end side of the root vegetable conveyor 40. By root vegetables conveyor 4
A shaft which constitutes a pair of left and right leg portions 46 of 0, the front end side slidably enters the long holes 46a provided in each leg portion 46 in the vertical direction of the machine body, and the base end side is fastened and fixed to the main frame 13a. The members constitute a conveyor lifting / lowering operation body 47a provided in the harvesting part frame so as to be lifted / lowered with respect to the traveling machine body together with the harvesting part frame. The pair of left and right conveyor lifting / lowering operation bodies 47a and the pair of left and right legs 46 are provided. Thus, the adjusting mechanism 47 is configured to automatically swing the root vegetable conveyor 40 up and down around the shaft center 43a in association with the raising and lowering of the harvesting unit 10 with respect to the traveling machine body.

That is, as shown in FIG. 15 (a), when the harvesting section 10 moves up and down in the low-level side lifting area LH on the lowering end side of the lifting area H where it can be moved up and down, each conveyor lifting operation body 47a only moves inside the long hole 46a of the leg portion 46 and does not perform pushing up operation and receiving support for the leg portion 46, and the left and right leg portions 46 are the supporting portions 3a provided on the body frame 3 of the traveling body. The root vegetable conveyer 40 is supported by being received and supported by the root vegetable conveyer 40 at a predetermined arrangement level.
And the bracket 6 of the machine body frame 3 maintain the mounting posture for transporting the carrot a from the harvesting section 10 rearward of the machine body. As shown in FIG. 15B, when the harvesting section 10 moves up and down in the high-level side up-and-down area part HH on the ascending end side of the low-level side up-and-down area part LH of the up-and-down area H, each conveyor up-and-down operation Body 47
a is located at the upper end of the elongated hole 46a of the leg portion 46, and the leg portion conveyor 40 is lifted by pushing up the leg portion 46 due to the lifting operation force of the lift cylinder 5, and the lowering operation by the lift cylinder 5 is performed. For legs 46
The root vegetable conveyor 40 is lowered by receiving and supporting it while lowering it. As the low-level side elevation region portion LH, the elevation region between the highest height and the descending end set so that the harvesting section 10 is lifted when performing the harvesting work 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 ascending / descending region portion LH, the harvesting unit 10 is
Even when the vertical movement of the root vegetable conveyor 40 is adjusted, the root vegetable conveyer 40 is adjusted so as not to swing up and down from the mounting position for transportation in which carrots are transferred without hindrance and to maintain the mounting position for transportation.
When 0 is located in the high-level side ascending / descending area portion HH, if the harvesting section 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 vertical direction of the harvesting section 10. Thus, when performing the harvesting work, even if the height of the weeding device 11, the soil loosening blade 15 and the lifting device 14 of the harvesting unit 10 is adjusted, the root vegetable conveyor 40 maintains the mounting posture for transportation. The carrot a from the harvesting section 10 can be smoothly supplied to the sorting conveyor 48 for work. When traveling without harvesting work, such as when turning, when the harvesting section 10 is raised, the root vegetable conveyor 40 is also raised, and the harvesting section 10 can be lifted sufficiently high for traveling.

The transmission structures of the left and right device parts of the leaf removal device 20 are configured as shown in FIGS. 6 and 7. That is, the input shaft 21a of the transmission case 21
A first rotation transmission shaft 21c driven by one end of which is interlocked via a bevel gear 21b.
Is provided between the input shaft 21a inside and the driving rotary body 36 of the rotary cutter 35 in parallel with the carrying direction by the positioning device 22 and the cutting carrying device 25, and an intermediate portion of the first rotary transmission shaft 21c is provided. A chain drive shaft 2 via a gear mechanism G1 including a bevel gear integrally rotatably mounted on the first rotary transmission shaft 21c and a bevel gear integrally rotatably mounted on the drive shaft 23c of the positioning chain 24.
It is linked to 3c. A bevel gear in which an end of the first rotary transmission shaft 21c opposite to the input side is integrally rotatably attached to the first rotary transmission shaft 21c, and a rotary cutter 3
5 is linked to the cutter driving rotary body 36 via a gear mechanism G2 including a bevel gear included in the driving rotary body 36. One end side of the cutter drive rotating body 36 is interlocked with the bevel gear 21d to move the
The second driven by the driving force from the rotary transmission shaft 21c
The rotary transmission shaft 21e is provided between the cutter drive rotating body 36 inside the transmission case 21 and the drive shaft 28 of the endless conveyor belt 27 of the cutting conveyor 25.
Arranged so as to rotate around the same axis as c,
A gear mechanism G3 including a bevel gear integrally rotatably attached to the second rotary transmission shaft 21e and the bevel gear integrally rotatably attached to the belt drive shaft 28 is provided on the other end side of the second rotary transmission shaft 21e. Through its belt drive shaft 28
It is linked to.

The left and right rotary cutters 35 are mounted on the transmission case 21 as a support frame based on the mounting structure shown in FIG. That is, the cutter support shaft 36b that integrally rotatably supports the rotary cutter 35 by integrally providing the cutter attachment base to which the rotary cutter 35 is connected with the bolt on the upper end side is provided on the transmission case 21 at the upper end side. The lower end side is rotatably supported by a driving rotary body 36 which is rotatably supported via a bearing, and the lower end side is slidable in a direction along the rotation axis of the rotary cutter 35. By attaching the adjusting mechanism 85 to the end portion of the shaft 36b that projects downward from the drive rotor 36, the rotary cutter 35
Is drivably attached to the transmission case 21, and the mounting height of the rotary cutter 35 with respect to the transmission case 21 can be adjusted. Further detailed description is as follows.

The drive rotating body 36 is a drive bevel gear 2 provided with the first rotary transmission shaft 21c so as to be integrally rotatable.
The passive bevel gear 39a meshing with 1f, the lower end side of which is fitted in the passive bevel gear 39a and is rotatably engaged integrally by a key, and the upper end side is rotatably supported by the transmission case 21 via a bearing. It is constituted by the rotating cylinder shaft 36a. The lower end side shaft portion 3 of the rotary cylinder shaft 36a with the passive bevel gear 39a
6d is made of a cylindrical member, and the upper end side shaft portion 36c has a lower end side integrally rotatably connected to an upper end portion of the lower end side shaft portion 36d and an outer diameter larger than an outer diameter of the lower end side shaft portion 36d. It is made of a hexagonal cylinder shaft having a diameter.

By providing a circular outer peripheral surface on the lower end side of the cutter support shaft 36b, which slidably abuts on the lower end side shaft portion 36d of the rotary cylinder shaft 36a, the lower end side of the rotary cylinder shaft 36a in the drive rotor 39 is provided. A supported portion 36e is slidably abutted and supported on the inner circumferential surface of the rotary cutter 35 in the direction along the axis of the rotary cutter 35. The upper end side of the cutter support shaft 36b has a hexagonal outer peripheral surface that is fitted into the upper end side shaft portion 36c of the rotary cylinder shaft 36a so as to be slidable and integrally rotatable. And a passive portion 36f having an outer diameter larger than the outer diameter of the supported portion 36e by being slidably and integrally rotatably engaged with the inner peripheral side of the side and being driven by the drive rotating body 39. I am allowed.

As a result, even if the cutter support shaft 36b is slidably adjusted with respect to the rotary cylinder shaft 36a of the driving rotary member 36 and the mounting position on the driving rotary member 36 changes, the passive portion 3 is also provided.
6f and the supported portion 36e are supported by the driving rotator 36 so as not to rattle, while the passive portion 36f is driven by the driving rotator 36 to drive the rotary cutter 35.

As shown in FIGS. 10 and 11, the adjusting mechanism 8
Reference numeral 5 denotes an adjusting screw shaft 81 whose tip is connected to the end of the cutter support shaft 36b protruding downward from the drive rotor 36 and the transmission case 21 via a connecting tool 80, and a base end of the transmission case 21. And a support body 82 whose side is fixed.

The connecting member 80 is attached to the end of the cutter support shaft 36b so as to rotate relative to the cutter support shaft 36b via a bearing 80a, and is attached by a retaining bolt 83 or the like.
It is engaged so that it does not move relative to the axial center of b, and is slid in the axial direction of the cutter support shaft 36b while being prevented from rotating by a locking portion 80b that enters the elongated hole of the support 82. Is engaged with.

The tip end of the adjusting screw shaft 81 is attached so as to rotate relative to the connector 80, and the positioning nut 84 is attached.
And the retaining ring engage the connector 80 so that it can be pushed and pulled. The lower end side of the adjusting screw shaft 81 is screwed into the screw portion 82a on the front end side of the support body 82.

As a result, the adjusting mechanism 85 changes the mounting height of the rotary cutter 35 to the transmission case 21 by rotating the operating tool 81a attached to the lower end side of the adjusting screw shaft 81. That is, the operation tool 81a
When the adjustment screw shaft 81 is rotated, the adjustment screw shaft 81 rotates in the forward rotation direction or the reverse rotation direction with respect to the support body 82, and the cutter support shaft 36b is moved upward or downward with respect to the rotary cylinder shaft 36a via the connector 80. Sliding operation. The cutter support shaft 36b is the rotary cylinder shaft 3
When the rotary cutter 35 is lifted with respect to 6a, the rotary cutter 35 is lifted together with the cutter support shaft 36b, and the mounting height of the rotary cutter 35 to the transmission case 21 is increased.
The height of the positioning chain 24 of No. 5 with respect to the positioning roller 24a becomes higher than that before adjustment. Cutter support shaft 36b
Is lowered with respect to the rotary cylinder shaft 36a, the rotary cutter 3
5 descends together with the cutter support shaft 36b to rotate the cutter 3.
The mounting height of No. 5 with respect to the transmission case 21 becomes lower, and the height of the rotary cutter 35 with respect to the positioning roller 24a of the positioning chain 24 becomes lower than that before adjustment.

A transmission structure for transmitting the driving force of the engine E to the traveling device 1, the harvesting section 10, and the conveyors 40 and 48 is constructed as shown in FIGS.

That is, the rotational driving force of the output pulley 64 of the engine E is transmitted by the transmission belt 65 to the input pulley 67a of the hydrostatic stepless transmission 67 which is the main transmission of the traveling mission 66. The left and right traveling output shafts 66a of the traveling mission 66, which are interlocked with the output portion of the stage transmission 67 through the auxiliary transmission and the steering clutch, are connected to the crawler drive sprockets of the left and right traveling devices 1.

The rotational driving force of the work output pulley 66b which is interlocked with the output portion of the continuously variable transmission 67 of the traveling mission 66 and is shifted by the continuously variable transmission 67 in synchronization with the traveling device 1, The transmission belt 68 transmits the intermediate transmission shaft 69, which penetrates the mounting cylinder 13b of the harvesting frame, to an end of the intermediate transmission shaft 69 inside the machine body.
9 is transmitted from the outer end of the machine body to a transmission shaft 60a provided inside the harvesting section transmission case 60 by a transmission belt 70, and is transmitted from the transmission shaft 60a inside the pulling-up and raising transmission case 61 on the left side. The belt drive chain 14c of the left side device portion of the pulling device 14 by the shaft 61a
In addition, the transmission shaft 61a provided inside the right-side lifting and lowering transmission case 61 transmits to the belt drive chain 14c of the right-side device portion of the lifting device 14. From the transmission shaft 61a of the pull-up transmission case 61 to the transmission shaft 62a provided inside the grass transmission case 62.
To the weed raising device of the right weeding device 11 by means of the transmission shaft 62a of the weeding transmission case 62 and the transmission shaft 63a provided inside the transmission case 63. It is adapted to be transmitted to each of the weed raising devices. The drive force of the belt drive chain 14c of the left device unit of the pulling device 14 is applied to the input shaft 21 of the left transmission case 21 of the leaf removing device 20.
The driving force of the belt drive chain 14c of the right side device portion of the pulling device 14 is transmitted to the input shaft 21a of the right side transmission case 21 of the leaf removing device 20. The driving force of the belt drive chain 14c of the left side device portion of the pulling device 14 is transmitted to the chain drive sprocket 31a of the leaf transporting device 30.

The rotational driving force of the output pulley 64 of the engine E is transmitted to one end side of the first intermediate transmission shaft 72 by the transmission belt 71, and the second transmission belt 73 is transmitted from the other end side of the first intermediate transmission shaft 72. It is transmitted to one end of the intermediate transmission shaft 74. The driving force of this second intermediate transmission shaft 74 is
Transmission belt 75 wound around one end of the intermediate transmission shaft 74
Thereby transmits the rotational driving force of the output sprocket 76b of the speed reducer 76 to the input pulley 76a of the speed reducer 76 including the worm and the worm wheel.
Drive sprocket 48a of sorting conveyor 48 by 7
It is transmitted to. The rotational driving force of the second intermediate transmission shaft 74 is transmitted to the conveyor drive shaft 41 of the root vegetable conveyor 40 by a transmission chain 78 wound around the end of the second intermediate transmission shaft 74 opposite to the input side. And to the input sprocket 79a of the branch transmission mechanism 79. Output sprocket 79 of this branch transmission mechanism 79
The driving force of b is transmitted to the guide roller 57 by the transmission chain 57a.

[Other Embodiments] The present invention can be applied to a harvesting machine for harvesting various crops such as radish and onion in addition to carrot, and these carrots, radish and onion are collectively referred to as root vegetables. I call it.

[Brief description of drawings]

[Figure 1] Side view of the entire riding-type carrot harvester

FIG. 2 is a plan view of the entire riding-type carrot harvester.

[Fig. 3] Transmission system diagram

[Fig. 4] Transmission system diagram

FIG. 5 is a plan view of the transmission structure.

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

FIG. 7 is a plan view of a transmission case of the leaf removing device.

FIG. 8 is an explanatory diagram showing a discharge state of discharged leaves.

FIG. 9 is a plan view of the leaf discharging and conveying device.

FIG. 10 is a sectional view of a rotary cutter mounting structure.

FIG. 11 is a plan view showing the engagement between the connector and the support.

FIG. 12 is a sectional view of a positioning device.

FIG. 13 is a cross-sectional view of a positioning device, a cutting transfer device, and a leaf discharge transfer device.

FIG. 14 is a plan view of a part of the positioning chain.

FIG. 15: Side view of root vegetable conveyor

FIG. 16 is a front view of the adjusting mechanism.

FIG. 17 is an explanatory diagram showing a posture change of the loading platform.

[Explanation of symbols]

21 Support frame 21c rotary transmission shaft 21f drive bevel gear 35 rotary cutter 36 Drive rotator 36a rotating cylinder shaft 36b cutter spindle 36f Passive part 36e Supported part a root vegetable b leaf

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigenori Saito 332 Ryohacho, Sakata City, Yamakawa Prefecture (56) Reference JP-A-7-79757 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01D 13/00-33/14

Claims (2)

(57) [Claims] 1. A cutter attachment part structure of a root vegetable harvester configured to cut a leaf of a root vegetable pulled out of a field by a rotary cutter which can be driven and rotated, wherein the rotary cutter is integrated. A drive rotor that rotatably supports a cutter support shaft that is slidably adjustable in a direction along the rotary shaft core of the rotary cutter and that is rotatably supported by a support frame. A passive portion that is mounted on the support frame via a drive shaft and is slidably and integrally rotatably engaged with the cutter support shaft on the inner peripheral side of the drive rotor, and is driven by the drive rotor; And a supported portion which is slidably abutted in the inner peripheral surface of the rotary cutter in the direction along the rotation axis of the rotary cutter and is supported by the drive rotating body.
A cutter mounting portion structure of a root vegetable harvester, wherein an outer diameter of the passive portion is larger than an outer diameter of the supported portion. 2. A drive rotatable rotary transmission shaft having a drive bevel gear for transmitting power to the drive rotating body integrally rotatably, the drive rotating body comprising: the cutter supporting shaft, the passive portion and the supported portion. And a passive bevel gear that meshes with the drive bevel gear and is externally fitted to the rotary cylinder shaft so as to rotate integrally with the drive bevel gear. The rotary cylinder shaft is attached to an end portion of the cutter support shaft that corresponds to the supported portion, and the end portion of the rotary cylinder shaft that corresponds to the passive portion of the cutter support shaft is attached to the end portion. The cutter mounting structure of the root vegetable harvester according to claim 1, wherein the cutter mounting part is rotatably supported by a support frame.