JP2003000023A - Root vegetable harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a root vegetable harvester whose performance is improved so that it can continuously cut mulch film 55, which is very hard to be cut. SOLUTION: The root vegetable harvester is provided, on its mobile machine body 1, with a gripping conveying means 3, 3 which grip leaves of root vegetables planted on a field 19 covered with a mulch film 55 from right and left sides, and pull out and convey them, and a mulch cutter 62 which cuts mulch film 55 in the driving direction of the mobile machine body 1. The root vegetable harvester is provided with a rolling element 76 and a transmission mechanisms 76, 82. The rolling element 76 rolls and proceeds on the ground with running mobile machine body 1, and the transmission mechanisms 76, 82 transmits the rotary motion of the rolling element 76 to the mulch cutter 62 at an increased speed so that the mulch cutter 62 is rotated with a higher speed than the mobile machine body 1.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a harvester for root vegetables such as carrots.

[0002]

2. Description of the Related Art Conventionally, in a root crop harvester, the leaves of root crops that have been planted in ridges in the field and are vegetated are sandwiched from the left and right by a pair of left and right sandwiching endless belts and conveyed upward and rearward from the field. Extraction of root crops, in order to assist this extraction, the soil is softened by a subsoiler at the position below the starting end (front end) of the endless sandwich, and the leaves of the root crop of the harvested strip are properly sandwiched. The endless belt with a protrusion at the front position of the endless belt (Tine)
It is well known that the leaves of the root crops of the harvested row and the leaves of the root crops of the unharvested row are distributed (by weeding), and the leaves of the crops of the harvested row are caused to be clamped by the endless belt. .

Further, in a multi-specific root vegetable harvester capable of harvesting multi-cultivated root vegetable crops, the root vegetables are properly extracted from the holes formed in the multi-film without raising the multi-film coated on the ridges in the field. In order to pull out the mulch, the multi-films on both the left and right sides of the root crop of the harvested strip are pressed against the ground by the multi-pressing body at the position below the start end (front end) of the sandwich endless band, and the multi-film is prevented from being caught on the subsoiler In order to move the mulch film forward from the subsoiler to the inside of the subsoiler by gradually moving the mulch film from the edge of the already harvested land side to the side of the unharvested land by the mulching body, When the whole width is moved from the already harvested side to the unharvested side in a bundle, this bundle becomes too large and the aircraft runs. It hinders the harvesting of crops of root crops, and when the mulch film is brought over, the soil overlaid on it will make the bundle weight of mulch film extremely heavy, and the work of collecting mulch film after harvesting. Since it becomes a heavy labor, the mulch film is cut in the traveling direction of the machine with the mulch cutter (the mulch film is cut to an appropriate width), and one mulch film can be easily collected in several times. It is also known to prevent a bundle of mulch films from becoming too large.

[0004]

However, a mulch film which is rich in flexibility and elasticity is difficult to cut even with a blade by itself, and it is even more difficult to cut it when it is cut on the soil and easily loosened. . It is a main object of the present invention to provide a root vegetable harvester capable of continuously cutting such a mulch film that is extremely difficult to cut.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned object, a sandwiching and transporting method in which a traveling machine body sandwiches the leaf portions of root vegetables vegetated in a field covered with mulch film from the left and right sides and pulls out and transports them. In the root vegetable harvester equipped with a means and a multi-cutter that cuts the multi-film in the traveling direction of the traveling machine body, a rolling element that advances while rolling on the ground as the traveling machine body travels, and the rolling element Provided with a transmission mechanism that accelerates and transmits the rotational movement to the multi-cutter, the multi-cutter is rotated at a speed faster than the traveling speed of the traveling machine body, and the continuous cutting of the multi-film by the multi-cutter can be reliably performed. Further, this can be performed at a low cost and with a simple structure without using a dedicated power source.

Further, the multi-cutter is formed in a circular saw shape, and continuous cutting of the multi-film can be surely performed by saw teeth cut on the outer peripheral edge of the multi-cutter.

Further, since the rolling element is provided with a lug on the outer peripheral surface, slipping of the rolling element can be prevented and the multi-cutter can be reliably rotated at a speed higher than the traveling speed of the traveling machine body.

Further, the transmission mechanism comprises an external gear provided on the rotary shaft of the multi-cutter and an internal gear that constantly meshes with the external gear. The internal gear is used as a body with the rolling element, and the minimum number of parts is required. Therefore, the multi-cutter can be rotated at a speed higher than the traveling speed of the traveling body.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 is a side view of the root crop harvester, FIG. 2 is the same plan view, FIG. 3 is the same front view, FIG. 4 is a plan view of the power transmission system, FIG. 5 is a plan view of the front part of the harvesting mechanism, and FIG. 6 is the same front view. In the figure, a driving operation unit having a steering column 4 and a driving seat 5 is arranged on the right front side in the traveling direction on the traveling machine body 1 equipped with a pair of left and right traveling crawlers 2a and 2b of the crawler traveling device. In addition, an engine 6 is arranged below the driver's seat 5, a mission 7 is arranged at the rear part of the traveling body 1, and drive wheels arranged at the rear ends of the left and right traveling crawlers 2a, 2b from the mission 7. Power is transmitted to 8. Further, on the left side in the traveling direction on the traveling machine body 1, the root vegetables K planted in the field (ridge) 19 are sandwiched from the left and right by the sandwiching and conveying means consisting of a pair of left and right endless belts 3 and 3. Then, the root part is pulled out from the field 19, and the harvesting mechanism A is provided for collecting the root portion while transporting it upward and upward, and constitutes a riding type self-propelled root vegetable harvesting machine.

A start end wheel 1 mounted on a support frame 10 rotatably supported via a bracket 10a at a harvesting mechanism rotation fulcrum 9 near a rear portion of the traveling machine body 1.
1, 11 and the rear end wheels 12, 12 are wound with the sandwiching endless belts 3, 3 and the front and rear midway portions of the sandwiching endless belts 3 are supported in a substantially straight line by a large number of intermediate wheels 13. There is.

As shown in FIGS. 2 and 4, the sandwiching and conveying line H of the leaf portion of the root vegetable K by the sandwiching endless belts 3 and 3 is outside the outer edge of the traveling crawler 2a on the left side in the traveling direction. 1 is parallel to the traveling direction of the traveling machine body 1 in a plan view, and is arranged so as to extend rearward and upward from a lower front portion of the traveling machine body 1 in a side view as shown in FIG.

In front of the sandwiching endless belt 3 on the left side in the traveling direction, a weeding device 14 for weeding the leaves of the harvested strip and the leaves of the unharvested strip is provided. In this weeding device 14, an elastically deformable rubber weeding tine 15 is vertically driven to drive an endless belt 15a integrally formed at a constant pitch.
The grass tine 15 is configured to move upward from the field scene 19 in a substantially vertical plane on the front side in the traveling direction of the traveling machine body 1.

Further, in front of the sandwiching endless belt 3 on the right side in the traveling direction, a raising device 16 is arranged for raising the leaves of the harvested strip and holding the sandwiched endless belts 3 in the sandwiching posture. . The raising device 16 is configured such that the elastically deformable rubber raising tines 17 laterally drive an endless belt 17a integrally formed at a constant pitch, so that the raising tines 17 are provided on the front side of the starting end wheel 11 with the grass. When the raising tines 17 are arranged so as to be substantially orthogonal to the vegetation tines 15 in the device 14, and the raising tines 17 move upward from the field scene 19, the tips of the protrusions 17 are located in the tine of the weeding device 14. 1
5 is arranged so as to face the side surface cover portion 14a, which is the non-acting side of No. 5.

Rotational fulcrums 20, 21 on the base end side of the upper link 22 and the lower link 23 as an ascending / descending link mechanism for ascending / descending the L-shaped subsoiler when viewed from the front are more than the fulcrum pivoting point 9 of the ascending / descending mechanism. An upper link 22 and a lower link 23, which are arranged on the inner surface of the traveling machine body 1 at the front side and are vertically rotatable about the vertically rotatable fulcrums 20, 21 as vertical links.
The vertical portion 24 of the subsoiler is connected to the tip end side of the subsoiler, and the horizontal blade portion 25 of the subsoiler is integrally extended laterally from the lower end of the vertical portion 24.

Then, the transmission belt 29 is wound around the pulley 28 fixed to the input shaft 20a of the upper rotary fulcrum 20 and the output pulley 27 of the engine 6, and the input shaft 2 is rotated.
0a is rotated, the base end of the upper link 22 is connected via an eccentric boss (not shown) fitted on the input shaft 20a, and the upper link 22 is oscillated and driven in the front-rear direction. As a result, the vertical portion 24 is inserted into the soil from the field scene 19 on the side of the already harvested row of the root vegetable K of the harvested row, and the horizontal blade portion 25 vibrates the subsoiler that crosses below the root of the root vegetable K back and forth to soil. The root vegetable K as the traveling body 1 travels forward.
It is designed to make it easy to pull out the root part of.

Further, the parallel hydraulic links 26 mounted between the base end of the lower link 23 and the traveling machine body 1 are configured to vertically move the parallel vertical links 22, 23. There is.

A forward pipe frame 31 is connected to the left end of a pipe-shaped power transmission lateral frame 30 provided coaxially with the harvesting mechanism rotation fulcrum 9 to form a forward pipe frame 31.
A forward transmission pipe 32 extending toward the right side of the fuselage is connected to a front end of the holding endless belts 3 in the longitudinal direction, and a transmission case 33 extends forward from a left end of the forward transmission pipe 32. The weeder transmission case 34 is connected to the upper part of the weeder 14 via the. Then, from the pulley 37 fixed to the input shaft 20a coaxial with the upper rotation fulcrum 20 through the transmission belt 38, on the same axis as the harvesting mechanism rotation fulcrum 9 and in the power transmission lateral frame 30. The power is transmitted to the pulley 40 fixed to the projecting end of the input shaft 39 to be inserted, and further the transmission of the transmission pipe and the like in the forward pipe frame 31, the raising transmission pipe 32, the transmission case 33, and the weeding device transmission case 34. Power is respectively transmitted to the raising device 16 and the weeding device 14 via the mechanism.

Further, the sprocket, which is loosely fitted to the input shaft 39 which is a shaft coaxial with the rotation mechanism fulcrum 9 of the harvesting mechanism and which is driven by the tuned output shaft of the mission 7, is driven via the transmission chain 41 to the rear portion. Power is transmitted to the transmission case 42,
Power is transmitted to the input portions of the gripping endless belts 3 and 3 coaxial with the rear end wheels 12 to rotationally drive the gripping endless belts 3 and 3, and below the rear end wheels 12.
A leaf portion discharging device 43 including a pair of left and right endless conveying bands 43a and 43b for horizontally conveying the leaf portion of the root vegetable K to the rear and a pair of left and right horizontally rotating rotary blades 44.
The rotational force is transmitted to the leaf portion cutting means 44 composed of a and 44a. Below the rear end wheels 12, the root of the root vegetable K is regulated in the horizontal rearward direction by regulating the upward movement of the root of the root vegetable K, so that the height of the root of the root vegetable K with respect to the leaf cutting means 44 is made uniform. A pair of left and right height-adjusting guide rods 45 for cutting the portion at a fixed position such as the lower end portion are arranged.

Below the leaf cutting means 44, a sorting conveyor 46 for receiving the root portion of the root vegetable K after the leaf cutting and conveying it to the right side of the traveling machine body 1 is arranged. Power is transmitted from a pulley fixed to an input shaft 39, which is a shaft concentric with the fulcrum 9, to an input portion 46a to a selection conveyor 46 via a transmission belt 47b. In this sorting conveyor 46, a large number of rod-shaped slats are stretched at a fixed interval between a pair of endless chains, and an operator who walks behind the traveling machine body 1 uses the root vegetables K on the sorting conveyor 46. Select defective products among them. At the discharge end of the sorting conveyor 46, there is a front and rear longitudinal container stand 49 on which a container 48 for receiving and accumulating good root vegetables K is placed. The base of the container platform 49 is connected to the right side surface of the traveling machine body 1 via a hinge so as to be vertically rotatable. When the container is not harvested, the container platform 49 is raised and erected upward. The posture is maintained.

Further, the holding endless belts 3, 3 and the weeding device 14 and the raising device 16 are arranged such that the frames of the respective device parts are integrally rotated up and down about the harvesting mechanism rotation fulcrum 9. The gauge wheel 52 attached to the end of the support rod 51 that is connected and protrudes forward from the front side thereof is supported to the field scene 19. And
At the time of turning in the field or traveling on the road, in order to keep the subsoiler and the endless belts 3 and 3, the weeding device 14 and the lower end of the raising device 16 and the gauge wheel 52 in the raised position so as not to interfere with the ground. Drives the hydraulic cylinder 26 to extend, rotates the front end sides of the parallel upper and lower links 22 and 23, which are the elevating and lowering link mechanism, upwardly, and moves the subsoiler upward while rotating clockwise in FIG. It is pulled out from the field and lifted above the field scene 19. At this time, the upper surface of the rotatable roller 53 for pushing up, which is provided on the side surface of the lower link 23, causes the upper end of the sandwiched endless belt 3,
Side view “He” provided on the lower surface side of the support frame 10 of FIG.
It is configured to move along the lower surface of the character-shaped guide rail 54, and after the subsoiler has moved up to a certain degree, the roller 53 moves the support frame 10 via the guide rail 54 to the harvesting mechanism rotation fulcrum 9. By rotating clockwise in FIG. 1 around the center, the endless belts 3 and 3, the weeding device 14 and the raising device 16 are held together with the subsoiler.
In addition, the gauge wheel 52 can be integrally lifted largely above the field scene 19. To start the harvesting work, to lower the sub-soiler, the sandwiched endless belts 3, 3 and the weeding device 14 and the raising device 16 and the gauge wheel 52 from the ascending position when turning in the field or traveling on the road to the harvesting work position. , The hydraulic cylinder 26 is contracted from the extended state, and the front end sides of the parallel upper and lower links 22 and 23, which are the elevating and lowering link mechanism, are rotated downward, and the subsoiler is moved downward while rotating counterclockwise in FIG. Insert it from the field scene 19 into the soil. The support frame 1 is moved by the downward movement of the roller 53 at this time.
0 rotates counterclockwise in FIG. 1 around the harvesting mechanism rotation fulcrum 9 to hold the subsoiler 25 together with the endless belts 3 and 3, the weeding device 14, and the raising device 1.
6 and the gauge wheel 52 are integrally lowered. After the gauge wheel 52 is grounded, the endless band 3
3 and the weeding device 14 and the raising device 16 are stopped from descending, and only the subsoiler continues to move downward, and the sandwiched endless belt 3,
3 and the weeding device 14 and the raising device 16 are held at their lower ends in a position slightly raised from the field scene 19, and the subsoiler is inserted into the soil to a depth where the horizontal blade 25 crosses below the root of the root vegetable K. Is retained.

Further, the endless belt 3 which is held during the harvesting work.
3 and the weeding device 14 and the raising device 16 in order to adjust the height above the ground, the gauge wheel 52 is attached to this support rod 5.
1. The electric cylinder 26a is mounted so that it can move up and down with respect to 1, and is between the gauge wheel 52 and the support rod 51.
Is provided, and the gauge wheel 52 is moved up and down by the expansion and contraction drive of the electric cylinder 26a, so that the height of ground and the weeding device 14 at the start of the sandwiching and conveying of the sandwiched endless belts 3 and 3 are increased.
The ground height at the lower end of the tip locus of the weed tine 15 and the ground height at the lower end of the tip locus of the raising tine 17 of the raising device 16 are integrally adjusted to appropriate heights.

The operation of harvesting the root vegetable K having the above-mentioned structure will be described. In the embodiment, the root vegetables K such as carrots cultivated in rows in the field are harvested for each row (1 row), and the operator sits on the driver's seat 5 to drive the engine 6 to drive the traveling machine body. When the piston rod of the hydraulic cylinder 26 is retracted while advancing 1, the subsoiler is pushed into the ground at the position of the row to be harvested, and the operator operates the steering lever to adjust the direction of the traveling machine body 1, and A pair of left and right starting end wheels 1 around which the endless belts 3 and 3 are wound.
The positions 1 and 11 are aligned so that they are located in the row of the root vegetables K to be harvested. As the traveling machine body 1 advances, the leaf portion of the root vegetable K to be harvested and the leaf portion of the root vegetable K on the unharvested side are not entangled by the upward movement of the tines 15 at the lower end of the weeding device 14. To separate. Then, by rotating the tine 17 of the raising device 16, the leaves of the root vegetable K to be harvested are raised upward. Also, the upper link 22
The subsoiler that vibrates due to the eccentric rotation boss at the base of the makes the soil soften. At the location of the start end wheels 11, 11 of the pair of left and right holding endless belts 3, 3, the gripped leaf portions are started to be held, and the pair of holding endless belts 3, 3 are moved.
The root portion of the root vegetable K having the leaf portion held between the root portion and the leaf portion is pulled out from the field with a light force, because the root portion is arranged so as to rise as it goes to the rear.

The upper end of the root portion of the root vegetable K which is lifted up toward the rear of the traveling machine body 1 along the sandwiching and conveying line H of the pair of sandwiching endless belts 3 and 3 is restrained by the lower surface of the guide rod 45. The leaves that move to a substantially horizontal rear and above the left and right pairs of the leaf discharging device 43 and the upper and lower conveying bands 43a and 43b.
It is moved to the rear of the traveling body 1 while being held by. On the way, a pair of left and right rotary blades 4 of the leaf cutting means 44
At 4a and 44a, since the lower end of the leaf portion of the root vegetable K is cut, the root portion of the root vegetable K freely falls and the sorting conveyor 4
The leaves that have been received by the above-mentioned 6 and laterally fed by this sorting conveyor 46 are collected and collected in the container 48 at the rear of the container stand 49 and discharged from the rear end of the leaf discharging device 43 to the field scene 19. It

By the way, in this embodiment, the mulch film 55 is spread over the field scene 19, and the cultivating holes are bored in the mulch film 55 in the row interval of the predetermined dimension W1 and the planting pitch of the predetermined dimension L1 to make each cultivation. The seedlings of root vegetables were planted and grown through the holes, and in order to surely harvest such root vegetables K of multi-cultivation, as shown in FIG. 7 and FIG.
The root vegetable harvesting machine of the present embodiment is located below the start portion of the sandwiching conveyance of the sandwiching endless belts 3 in order to properly extract the root vegetable K from the cultivation hole without lifting the mulch film 55 covered in the field scene 19. In order to prevent the mulch film 55 on both left and right sides of the harvested root vegetable K from being pressed against the ground by the mulch retainer, and to prevent the mulch film 55 from being caught on the subsoiler, the mulch holder is used in front of the subsoiler to mulch The film 55 is gradually moved from the edge of the already harvested land side to the unharvested land side and placed inside the subsoiler, and the width of the multi-film 5 exceeds 1 meter.
If 5 is moved from the already harvested land side to the unharvested land side over the entire width, the bundle becomes too large, which hinders the operation of the aircraft and the harvest of root vegetables K. As the soil covered on this is hugged when going, the bundle weight of the mulch film 55 becomes extremely heavy and the work of collecting the mulch film 55 after harvesting becomes a heavy labor. Cut in the direction of travel (cut the multi-film 55 to an appropriate width) so that one multi-film 55 can be easily collected in several times to prevent the multi-film bundle from becoming too large. It is configured as a multi-spec root vegetable harvester.

As the multi-pressing body, a multi-pressing roller 56 is used which is rotatable around a horizontal axis which is orthogonal to the traveling direction. This multi-press roller 56
The sandwiched endless belts 3 and 3 are arranged below the root vegetable K withdrawal start position and on both left and right sides of the crop of the vegetable root K.
On the right side (already harvested land side) of the harvest line, two multi-holding rollers 56 are arranged in the front and back, while on the left side (unharvested land side) of the harvest line, one multi-holding roller 56 is placed, and The left side multi-holding roller 56 is displaced rearward from the right side (already-harvested land side) rear multi-holding roller 56, and the right side (already-harvested land side) multi-holding roller 56 of the harvest strip is left ( The multi-holding roller 56 on the right side (already-harvested land side) and the multi-holding roller 56 on the left side (unharvested land side) of the harvesting strip are located so as to be located forward of the multi-holding roller 56 on the unharvested land side. The positions are shifted to the front and back. The support of each multi-pressing roller 56 is connected to the support frame 10 and the like so that all of the multi-pressing rollers 56 move up and down integrally with the sandwiched endless belts 3, 3. On the other hand, the front multi-pushing roller 56 on the right front side is fixedly supported, and the multi-pushing roller 56 on the right rear side and the left side is supported rotatably up and down within a predetermined range, and is constantly elastically urged downward by a spring or the like. . Then, at the time of harvesting work, each multi-pressing roller 56 presses the multi-films 55 on the left and right sides of the root vegetables K of the harvested strip to the ground at a position below the starting end (front end) of the sandwiched endless belts 3, 3 and lifts the multi-film 55. It works to pull root vegetable K out of the cultivation hole without letting it go.

As the multi-shifting body, a vertically-long multi-shifting claw 61 is used which is inserted in the soil on the right side of the harvesting strip (the harvested land) on the front side of the sub-soiler in the traveling direction. This multi-claw 61 is provided between the gauge wheel 52 and the vertical portion 24 of the subsoiler in a front and rear view, and
Between the front side of the gauge wheel 52 and the vertical portion 24 of the subsoiler in a plan view, the rearward one is closer to the harvesting strip (the rearward one is displaced to the left side (non-harvested land side)).
Thus, a plurality (two in this embodiment) are arranged. The supports of the multi-claws 61 are connected to the support frame 10 and the like so that the multi-claws 61 vertically move integrally with the sandwiched endless belts 3, 3 and the like. The multi pulling claws 61 can be moved up and down so that each multi pulling claw 61 can be moved between an unused position where the multi pulling claw 61 is lifted from the field scene 19 and a use position where the lower part is inserted into the soil, and can be fixedly held at each position. Supported by. And
By fixing each multi-claw 61 at the use position at the start of the harvesting work and lowering the multi-claw 61 together with the sandwiched endless belts 3, 3 to the harvesting position, the lower part of each multi-claw 61 is appropriately deep from the field scene 19. It is plugged into the soil. By performing the harvesting work in this state, the mulch film 55 is gradually moved to the unharvested land side from the edge of the already harvested land side and put in the inside of the vertical portion 24 of the subsoiler (left side (unharvested land side)), It works to prevent the mulch film 55 from getting caught in the subsoiler.

As the multi-cutter, a disk-shaped disc cutter 62 having saw teeth 62a formed on the outer peripheral edge thereof is used. The disc cutter 62 is arranged in front of the crawler 2a on the left side (on the unharvested land side) in the traveling direction (preferably immediately before) and within the left and right width of the crawler 2a (see FIG. 7). In front of the crawler 2a on the left side (on the unharvested land side), after pulling out the root vegetable K, on the unharvested land side from the vertical portion 24 of the subsoiler, the mulch film between the harvested strip and the next harvested strip next to it. It works so as to continuously cut 55 in the traveling direction. The cutting of the mulch film 55 may be performed for each harvesting operation of each planting strip, but it is usually determined by the operator according to the lateral width of one mulch film 55. For example, in the case of 1 row 6 row planting, when harvesting the root vegetable K of the 4th row of planting from the right side of the direction of movement of one row (the side of the already harvested land), or the root vegetable K of the 3rd and 5th row of planting rows When harvesting, the mulch film 55 is cut using the disc cutter 62 once or twice per sheet (1 ridge), and the mulch film 55 of 1 sheet (1 ridge) has an appropriate width. I'm trying to disconnect. As a result, the mulch film 55 having a width of more than 1 meter is gathered from the already harvested land side to the unharvested land side in a bundle shape over the entire width, and the bundle becomes too large, which hinders the traveling of the aircraft and the harvest of the root vegetables K. Came to
Further, since the soil overlaid on the mulch film 55 is held when the mulch film 55 is pulled over, the bundle weight of the mulch film 55 becomes extremely heavy, and it is possible to prevent the collecting work of the mulch film 55 after harvesting from being a heavy labor. . Further, since the edge of the mulch film 55 on the unharvested land side after being cut by the disc cutter 62 is trampled by the crawler 2a on the left side (unharvested land side), the mulch film 55 is moved to the field scene 19 by the lug of the crawler 2a. Since the mulch film 55 is pushed in, and the mulch film 55 is pulled backward to remove the slack, it is possible to prevent the mulch film 55 on the unharvested side after cutting from being easily rolled up, and at the same time, the weeding device 14
It is possible to prevent the mulch film 55 from being caught by the tine 15 of the sprouting tine 15 and the tine 17 of the activating device 16, and at the same time the mulch film 55 on the side of the already harvested land after cutting is also on the left side (on the side of the unharvested land) of the crawler 2a. Since it is stepped on, the mulch film 55 is not caught in the subsoiler or rolled up, and it is possible to prevent the harvesting work in the next step from being disturbed.

The position of the harvesting mechanism A of the harvesting mechanism A is located near the pre-treatment device of the harvesting mechanism A, which is a position where the visibility is good and which can be visually recognized by the operator who is on the driving operation section of the traveling machine body 1. A display member is provided for determining whether or not the height above ground is appropriate. As this display member, a relatively large multi-pressing roller 65 that rotates around a horizontal axis that is orthogonal to the traveling direction is used. The multi-pressing roller 65 is arranged in the vicinity of the already harvested land side of the lower traveling part of the weeding tine 15 of the weeding device 14 provided in the pretreatment device. The support of the multi-pressing roller 65 is connected to the support rod 51 of the gauge wheel 52 and the like so that the multi-pressing roller 65 moves up and down integrally with the pretreatment device and the like. A base end portion of a roller arm that rotatably supports the pressing roller 65 around a horizontal axis that is orthogonal to the traveling direction is supported rotatably up and down via a fulcrum shaft, and supports the support body. The roller arm is positionally fixed so as to be vertically adjustable via a height adjusting mechanism, and the tip locus of this grass tine 15 is moved by an appropriate dimension so that the lower end of the tip locus of the weed tine 15 of the weeding device 14 is lifted from the field scene. The multi-holding roller 65 is supported at a relative position where the lower surface of the multi-holding roller 65 is located at a position lower than the lower end. Then, at the time of harvesting work, when the multi-push roller 65 is made to float by the operator operating the operation section of the traveling machine body 1 from the field scene 19 and does not rotate,
Since the lower end of the trailing edge of the weeding tine 15 of the weeding device 14 is lifted up too much from the field scene 19, it is judged that the height of the harvesting mechanism A including the pretreatment device is too high and needs to be adjusted down, When the roller 65 is in contact with the farm scene 19 at an appropriate pressure and is rotating smoothly, the weeding device 14
Since the lower end of the trail of the tip of the swarding tine 15 is lifted from the field scene 19 by an appropriate size, it is determined that the ground height of the harvesting mechanism A including the pretreatment device does not need to be adjusted properly, and the roller 65 is soiled. When it is pressed against the field scene 19 up to the state of pressing and does not rotate smoothly, the lower end of the trailing edge of the tip of the weeding tine 15 of the weeding device 14 is the field scene 1.
Since it is too close to 9, the height of ground of the harvesting mechanism A including the pretreatment device is too low, and it works to make it necessary to adjust the height. In this way, it is possible to determine whether or not the ground height of the harvesting mechanism A including the pretreatment device is appropriate by simply looking at the roller 65. When the ground height is too high, the electric cylinder 26a is driven to be reduced and the gauge wheel. 52 is moved upward, and conversely, when the ground height is too low, the electric cylinder 26
It is easy to adjust the height of the harvesting mechanism A, which drives a to extend the gauge wheel 52 downward, in parallel with the traveling operation of the machine,
Moreover, since it becomes possible to perform it accurately, the above ground height of the weeding device 14 of the pretreatment device can be easily maintained at an appropriate height by facilitating the adjustment of the above ground height of the harvesting mechanism A. As a result, when harvesting root vegetables K for multi-cultivation, pretreatment device 1
While properly operating the leaves 4 and 16 and the sandwiching and conveying means 3 and 3 on the leaf portion of the root vegetable K, the contact with the mulch film 55 of the pretreatment devices 14 and 16 can be reliably prevented, and continuous work can be performed. Further, the roller 65 is provided in order to prevent each of the tines 15 and 17 of the weeding device 14 and the raising device 16 of the pretreatment device from being brought into contact with the mulch film 55 at the lower traveling part and caught. The role of the mulch retainer that prevents the floating by pushing the mulch film 55 to the ground in the vicinity of the already harvested land side of the lower circulation part of the tines 15 and 17, and the role of the gauge for adjusting the ground height of the harvesting mechanism A as described above. And is playing.

As shown in FIGS. 9 to 12, the disc cutter 62 is also vertically movable integrally with the sandwiched endless belts 3, 3 and the like, and is also vertically movable independently.
The cutter lifting / lowering fulcrum shaft 70 is horizontally attached to the support frame 10 or the like in the lateral direction of the machine body, and the front ends of the cutter lifting / lowering arm 71 and the cutter lifting / lowering operation arm 72 are mounted on the cutter lifting / lowering fulcrum shaft 70. It is rotatably fitted, and has a cutter lifting arm 71 and a cutter lifting operation arm 72 from the cutter lifting fulcrum shaft 70 toward the rear of the machine body.
And a cutter elevating arm 71 and a cutter elevating operation arm 72 are supported by the support frame 10 and the like so as to be swingable in the vertical direction around the cutter elevating fulcrum shaft 70. Then, the rotary shaft 75 of the disk cutter 62 is horizontally supported by the cylindrical bearing case 73 integrally attached to the rear end of the cutter raising / lowering arm 71 through the bearing 74 in the left-right direction of the machine body. The disc cutter 62 is integrally mounted on the rotary shaft 75 that projects to the side (left side in the traveling direction).

Further, there is provided a rolling element 76 which advances while rolling on the ground (field scene 19) as the traveling machine body 1 travels, and the rolling element 76 has one side surface having a diameter smaller than that of the disc cutter 62 opened. In addition to being formed in a drum shape, lugs 77 for slip prevention are integrally provided on the outer peripheral surface at a constant pitch. The rolling element 7 is provided separately from the bearing case 73 for the rotating shaft 75 of the disc cutter 62.
A cylindrical bearing case 78 for the rotary shaft 80 of 6 is provided, and the welding flanges 79a and 79b integrally attached to the bearing cases 73 and 78 are fastened to each other, and the disc cutter 6
The rolling element 7 is provided on the lower side of the bearing case 73 for the second rotating shaft 75.
6, the bearing case 78 for the rotating shaft 80 is connected and fixed, and the rotating shaft 80 of the rolling element 76 is horizontally supported by the bearing case 78 through the bearing 81 in the lateral direction of the machine body.
One side of the bearing case 78, which is arranged in parallel with the rotating shaft 75 of the disc cutter 62, below the rotating shaft 80 of the rolling element 76, and which is located on the opposite side of the disc cutter 62. The rolling element 76 is integrally mounted on the rotary shaft 80 that projects (to the right in the traveling direction), and the disk cutter 62 and the rolling element 76 are provided on the rear end side of the cutter elevating arm 71, and the peripheral wall surface 76a of the rolling element 76a. When the rolling contact with the field 19 occurs, the disc cutter 6
It is attached so that the lower edge of 2 is inserted into the ground. Further, by appropriately setting the heights of the peripheral wall surface 76a of the rolling element 76 and the outer periphery of the disc cutter 62 with respect to the ground, the disc cutter 62 is properly brought into contact with the mulch film 55.

Further, a transmission mechanism is provided which accelerates and transmits the rotational movement of the rolling element 76 to the disc cutter 62.
The transmission mechanism comprises a small diameter external gear 82 provided on the rotary shaft 75 of the disc cutter 62 and an internal gear that constantly meshes with the external gear 82. The rolling element 76 is used as the internal gear (the rolling element 76 is (The internal gear is used as the same body), and the rotation shaft that protrudes inside the rolling element 76 from one side (right side in the traveling direction) of the bearing case 73 that is the side opposite to the disc cutter 62 and is the rolling element 76 side. 7
5, the external gear 82 is integrally mounted, and the external gear 82 is arranged between the peripheral wall surface 76a and the rotating shaft 80 inside the rolling element 76, and each tooth on the outer circumference of the external gear 82 and the rolling element 76 are arranged.
This rolling element 7 is formed so that the peripheral wall surface 76a of the
Engagement holes 83 are formed in the peripheral wall surface 76a of No. 6 at a constant pitch.

Further, a safety cover 84 for covering the upper portion of the disc cutter 62 is provided, and the safety cover 84 is fastened to a cover mounting bracket 85 fixed to the cutter elevating arm 71.

The cutter raising / lowering operation arm is attached to a cutter raising / lowering lever (not shown) which is attached to the support frame 10 or the like and is arranged at a position where it can be operated from the operation / operating portion of the traveling machine body 1 such as the upper left side of the front of the harvesting mechanism A. 72 is connected via a rod 86, and the cutter lifting / lowering lever is used to swing the cutter lifting / lowering operation arm 72 up and down around the cutter lifting / lowering fulcrum shaft 70 to move the cutter lifting / lowering operation arm 72 to the position shown in FIG.
In order to switch between the lowering operation position (cutter use position) shown in FIG. 10 and the raising operation position (cutter non-use position) shown in FIG. 10, the latter half of the cutter elevating and lowering operation arm 72 is bifurcated, and the forked part 72a is formed. The lower end of the rod 86 is connected to the middle portion of the via a connecting pin 87, and the forked portion 72a
A support shaft 88 is attached to a rear end portion of the vehicle so as to be rotatable around a lateral axis of the machine body. Further, a guide rod 89 whose lower end portion is bent sideways is provided, and a lower end laterally oriented portion 89a of the guide rod 89 is provided.
Is connected to the rear portion of the cutter elevating arm 71 from this one side, and a guide rod 89 is extended upward from the rear one side of the cutter elevating arm 71 so that the upper portion of the guide rod 89 is at the central portion of the support shaft 88. Is slidably inserted into and supported by the support shaft 88 at right angles, and is vertically inserted into the upper end of a guide rod 89 projecting upward from the support shaft 88 to guide the guide rod 89 from the support shaft 88.
The retaining member 90 for preventing the retaining of the upper and lower spring seats 91 between the lower end sideways portion 89a of the guide rod 89 and the support shaft 88.
A spring 93 to be mounted via 92 is provided, and the cutter lifting / lowering arm 71, the disc cutter 62 attached thereto and the rolling element 76 are provided with respect to the cutter lifting / lowering operation arm 72.
Is integrally biased downward.

Then, as shown in FIG. 10, the cutter elevating lever is used to lift the cutter elevating operation arm 72 from the lowering operation position (cutter use position) shown in FIG. 9 to the ascending operation position (cutter non-use position). The support shaft 88 moves on the guide rod 89 toward the upper end and engages with the retaining member 90, and thereafter the guide rod 8
The cutter lifting / lowering arm 71 is lifted upward around the fulcrum shaft 70 in conjunction with the cutter lifting / lowering operation arm 72 via 9 to lift and support the disc cutter 62 and the rolling element 76 attached thereto. Is.

On the other hand, as shown in FIG. 9, the cutter raising / lowering lever pushes down the cutter raising / lowering operation arm 72 from the raising operation position (cutter non-use position) shown in FIG. 10 to the descending operation position (cutter use position).
In the first half of the pushing operation, the guide rod 89 and the cutter lifting arm 71 are lowered around the fulcrum shaft 70 in conjunction with the cutter lifting operation arm 72, and the peripheral wall surface 76a of the rolling element 76 attached to this is grounded, and , While inserting the lower edge of the disc cutter 62 into the ground,
In the latter half of the pressing operation thereafter, the support shaft 88 is pushed down from the upper end portion on the guide rod 89 by the cutter raising / lowering operation arm 72, the spring 93 is compressed, and the cutter raising / lowering arm 71 is pushed through the guide rod 89. The force of the spring 93 is urged downward, the rolling element 76 attached thereto is elastically pressed against and supported by the field scene 19, and the lower edge of the disc cutter 62 is surely inserted into the ground, and at the time of harvesting work, As the traveling machine body 1 travels (forwards), the rolling elements 76
On the field scene 19, while rolling up and down following this unevenness and without slipping by the lug 79, the rolling motion is performed at the same speed as the traveling speed of the traveling machine body 1, and the rotational motion of the rolling element 76 is changed. This rolling element 76 (internal gear) and external gear 8
The multi-film 55 is continuously cut in the traveling direction while being accelerated by the transmission mechanism consisting of 2 to the rotary shaft 75 of the disc cutter 62 and rotating the disc cutter 62 at a speed higher than the traveling speed of the traveling machine body 1. Configured to go.

The force for elastically pressing the disc cutter 62 and the rolling element 76 against the field 19 can be achieved by axially adjusting the mounting position of the lower spring seat 92 on the guide rod 89.

[0037]

As is apparent from the above embodiments, according to the present invention, the leaves of root vegetables vegetated in the field 19 covered with the mulch film 55 are sandwiched from the left and right sides of the traveling machine body 1 and are conveyed. In the root vegetable harvester provided with the sandwiching and conveying means 3, 3 and the multi-cutter 62 that cuts the multi-film 55 in the traveling direction of the traveling machine body 1, the traveling machine body 1
The rolling element 76 that travels while rolling on the ground as the vehicle travels, and the rotary motion of the rolling element 76
A transmission mechanism 76, 82 for increasing the speed of transmission is provided to rotate the multi-cutter 62 at a speed higher than the traveling speed of the traveling machine body 1. The multi-cutter 62 reliably cuts the multi-film 55 continuously. In addition, this can be performed at a low cost and with a simple structure without using a dedicated power source.

Further, the multi-cutter 62 is formed in a circular saw shape, and the multi-film 55 can be surely cut by the saw teeth 62a formed on the outer peripheral edge of the multi-cutter 62.

Since the rolling element 76 is provided with the lug 77 on its outer peripheral surface, slipping of the rolling element 76 can be prevented and the multi-cutter 62 can be reliably rotated at a speed higher than the traveling speed of the traveling machine body 1. It is a thing.

The transmission mechanism is composed of an external gear 82 provided on the rotary shaft 75 of the multi-cutter 62 and an internal gear that constantly meshes with the external gear 82. The internal gear is used as the same body as the rolling element 76. The multi-cutter 62 can be rotated at a speed higher than the traveling speed of the traveling machine body 1 with the minimum number of parts.

[Brief description of drawings]

[Figure 1] Side view of root vegetable harvester

[Figure 2] Top view of root vegetable harvester

[Figure 3] Front view of root vegetable harvester

FIG. 4 is a plan view of the power transmission system.

FIG. 5 is a plan view of the front part of the harvesting mechanism.

FIG. 6 is a front view of the front part of the harvesting mechanism.

FIG. 7 is a plan view showing a multi-specific harvesting mechanism structure.

FIG. 8 is a side view showing a multi-specific harvesting mechanism structure.

FIG. 9 is a side view of the multi-cutter in use.

FIG. 10 is a side view of the multi-cutter part when not in use.

FIG. 11 is a cross-sectional plan view of a multi-cutter part.

FIG. 12 is a side view of the speed increasing mechanism of the multi-cutter section.

[Explanation of symbols]

K root vegetables A harvesting mechanism 1 traveling aircraft 2a, 2b traveling crawler (crawler traveling device) 3 Clamping endless belt (sandwiching and conveying means) 19 Field scene (ground) 55 mulch film 62 Disc Cutter (Multi Cutter) 75 rotation axis 76 rolling elements 77 rugs 82 external gear 83 meshing holes

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shinichi Takahashi             Seirei Industrial Co., Ltd. 428 Enami, Okayama City, Okayama Prefecture             Inside the company F-term (reference) 2B024 CA02 CB01 DB01                 2B072 AA10 BA02 BA21 BA30 CA12                       DA02 EA01

Claims (4)

[Claims] 1. A sandwiching and conveying means for sandwiching and pulling out leaf parts of root vegetables vegetated in a field covered with a mulch film from the left and right on the traveling machine body, and cutting the mulch film in the traveling direction of the traveling machine body. In a root crop harvester equipped with a multi-cutter that moves, a rolling element that travels while rolling on the ground as the traveling body travels, and a transmission mechanism that accelerates and transmits the rotational motion of the rolling element to the multi-cutter. And a multi-cutter is rotated at a speed faster than the traveling speed of the traveling machine body. 2. The root vegetable harvesting machine according to claim 1, wherein the multi-cutter is formed in a circular saw shape. 3. The root vegetable harvesting machine according to claim 1, wherein the rolling element is provided with a lug on the outer peripheral surface. 4. The transmission mechanism comprises an external gear provided on the rotary shaft of the multi-cutter and an internal gear that constantly meshes with the external gear, and the internal gear is used as the same body as the rolling element. The root vegetable harvester described in 1.