JP2003001589A - Beet foliage cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beet foliage cutter that can automatically cut off a root thick when a feeler wheel moves up and thin when it moves down. SOLUTION: A back parallelogram link 18 is provided along a swing arm 8 that supports the axis of the feeler wheel 7. Making a back vertical link a knife bar 19, a knife 53 is mounted horizontally on the lower end of the knife bar 19. A bracket 49 engraved with an arc groove 52 on an outside plate that extends fore and aft outside of the knife bar 19 is mounted on the outside face of the swing arm 8. The top end and the lower end of a knife bar arm 38 are respectively attached to be freely fixed on a hollow projection shaft 35 and the arc groove 52 in the upper half of the knife bar 19. In addition, the lower end of the knife bar arm 38 is continuously displaced between the core of the feeler wheel 7 and the front part and fixed on the bracket 49.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for cutting root crowns along with foliage in a field before harvesting beet,
Specifically, it relates to a device capable of automatically adjusting the cutting thickness according to the size of the beat.

[0002]

2. Description of the Related Art In beet harvesting work, tapping work is carried out at the same time as the digging work or before cutting the foliage. The most commonly used tapping mechanism today consists of a feeler wheel that combines multiple hollow disks with serrated edges, and a flat-blade knife that moves up and down in a mechanically fixed relationship. The gap between the lower peripheral top surface of the feeler wheel and the knife is the cutting thickness of the beet root crown. Desirable tapping position is the first leaf trace when the diameter of the root crown is up to about 10 cm, and about 1 cm above the first leaf trace when the diameter is larger.

Generally, the feeler wheel has a large amount of rise when riding on a beat having a large diameter, and a small amount of rise for a small beat. Therefore, in order to obtain an appropriate cutting position of the beet root portion, it is desirable that the gap between the knife wheel lower peripheral top surface and the knife be increased or decreased according to the vertical movement of the feeler wheel. In response to this, for example, a beat head cutting device disclosed in Japanese Patent Publication No. 44-30564 is known.

According to the technique disclosed in Japanese Patent Publication No. 44-30564, a feeler wheel is attached to a main support arm whose one end is rotatably attached to a vertical machine frame, and two upper and lower sub-support arms are provided in parallel with the main support arm. One end is attached to the vertical machine frame and the other end is attached to the mounting plate to form a parallelogram link, a knife is fixed to the support rod attached to this mounting plate, and further adjustment is made between the main supporting arm and the upper sub supporting arm. It is slanted so that the rod can be replaced. With this configuration, the knife gap can be automatically adjusted to be wider as the feeler wheel moves upward and narrower as the feeler wheel moves upward, in association with the vertical movement of the feeler wheel depending on the size of the beat.

Further, Japanese Patent No. 2652617 discloses a technique relating to a root and vegetable treatment device for root vegetables. This is because the adjustment rod can be replaced by replacing the bolts and nuts in the shaft stopper holes at regular intervals provided in the main support arm and the upper sub-support arm, and making fine adjustments in stages. It has disappeared. That is, a rear vertical link of the parallelogram link is attached to the feeler wheel frame (corresponding to the main support arm) concentric with the center of rotation of the feeler wheel, and is attached to the lower end of the front vertical link of the parallelogram link. A knife is attached, and a connecting rod whose length can be adjusted by screw adjustment is laid between the swing lever attached to the upper end of the rear vertical link and the fixed machine frame provided in front of this swing lever. There is.

With this structure, when the connecting rod is not parallel to the feeler wheel frame when the feeler wheel frame is moved upward, the rocker lever is pulled to lower the front vertical link of the parallelogram link to expand the knife gap. During the downward movement of the feeler wheel frame, the swing lever is pushed to pull up the front vertical link and raise the knife to narrow the knife gap. Further, since the length of the connecting rod can be continuously changed by adjusting the screw, fine adjustment of the knife gap is possible. Further, when the connecting rod and the feeler wheel frame are in a parallel state, the parallelogram link does not operate due to the connecting rod even when the feeler wheel moves up and down, so that the knife gap does not change.

[0007]

In the beat head cutting device described above, the adjustment rod is replaced step by step by replacing the bolts and nuts with the shaft stop holes. There was a problem that the movement of could not be finely adjusted. In the technique of Japanese Patent No. 2652617, the above problems can be steplessly achieved by using a connecting rod whose length can be adjusted by a screw, but the fixed machine frame, the rocker lever, and the length are adjusted by a screw. There is a problem that the structure becomes a little complicated, such as by providing a connecting rod.

On the other hand, since the ground height of the beat in the field greatly changes depending on the field conditions and the cultivation conditions, it is desired that the initial clearance of the knife can be easily adjusted. SUMMARY OF THE INVENTION An object of the present invention is to provide a beet foliage cutting device that realizes automatic adjustment of the knife gap with a relatively simple structure and that can easily adjust the initial gap of the knife.

[0009]

The present invention has the following features to attain the object mentioned above. That is,
A feeler wheel 7 pivotally connected to the machine frame 1 at right angles between left and right rocker body arms 8 and 9 extending rearward and pivotably connected to the machine frame 1 at the front end. A lower parallel link 11 connected to the lower arm of the swing arm 8 in parallel with the swing arm 8 and a vertical link 16 and the swing arm 8 connected to an intermediate portion of the swing arm 8 to form a front parallelogram link. Form 15. Then, the vertical link 16 is shared, and the rear vertical link thereof is a knife bar 19A, and an upper link 20 for connecting the middle portion and the lower portion of the knife bar 19A to the upper end portion and the lower end portion of the vertical link 16, respectively.
And a lower link 21, and a rear parallelogram link 18 is provided behind the front parallelogram link 15 along the swing arm 8.

The hollow projecting shaft 35 fixed to the outer surface of the upper half of the knife bar 19A, and the knife bar 19A.
A bracket 49 fixed to the outer surface of the swing arm 8 and an upper end bearing 39 are pivotally attached to the hollow projecting shaft 35, and a lower end bearing 40 is provided.
Is provided with a knife bar arm 38 pivotably movably fixed to the circular arc groove hole 52, and a knife 53 that is attached to the lower end of the knife bar 19A horizontally with a lower peripheral apex of the feeler wheel 7 with a gap therebetween. This is the foliage cutting device.

The upper end of the above-mentioned knife bar 19A is formed into an outwardly bent portion 28, and a vertical slot 30 is provided in the center of the upper half to form the knife bar 19. Then, the upper end portion is formed into an outwardly bent portion 36, the hollow protruding shaft 35 is fixed to the middle portion of the outer side surface, and a knife up / down adjusting plate 34 is provided on the outer side surface of the knife bar 19 so as to be overlapped with the same width. Further, a screw bar 32 with a handle which penetrates the outwardly bent portion 28 of the knife bar 19 from above and is screwed into the outwardly bent portion 36 of the knife up / down adjusting plate 34, and the back surface of the vertically elongated hole 30 are brought into contact with the knife bar. 19 and a U-shaped clamp 46 having both side plates abutting both outer end surfaces of the knife vertical adjustment plate 34, an upper end bearing 39 of the knife bar arm 38, a hollow projecting shaft 35 and a vertically elongated hole of the knife bar 19 in order from the outside. The beet stalk and leaf cutting device is provided with an upper lever 41 having one end fixed with a threaded rod 43 screwed into a screw hole 47 in the central portion of the rear plate of the U-shaped clamp 46.

[0012]

Embodiments of the present invention will now be described with reference to the drawings. In FIG. 1, A is an external view of a beet stover cutting device according to the present invention. The beet foliar cutting device A of FIG. 1 is for two ridges, but the left and right ones are bilaterally symmetrical, so one ridge on the left side in the forward direction will be described. Machine frame 1
Is a type that is directly mounted on the hydraulic three-point support device of the tractor,
The front part is provided with a front machine frame 1A having a U shape in a front view. The machine frame 1 is provided with a ruler wheel 2 attached to the lower end of a ruler wheel elevating cylinder 4 which is fixed on both left and right sides. The ground height of the ruler wheel 2 can be adjusted by a screw mechanism provided in the ruler wheel lifting cylinder 4. Reference numeral 3 denotes a rolling corter that moves forward outside the beet root crown and is provided inside the ruler wheels on the left and right.

Reference numeral 8 is a swing arm. The front end is rotatably connected to the left side in the forward direction of the front machine casing 1A by a front support shaft 6,
Extend diagonally downward and backward. Referring to FIG. 6, reference numeral 9 is also a swing arm having the same shape as the swing arm 8, and a front end portion thereof is a front machine frame 1
It is rotatably connected to the right side of A by a front support shaft 6 and is attached to a swing arm 8. Reference numeral 7 is a feeler wheel, which is provided with a plurality of rings having sawtooth-shaped projections on the outer periphery thereof.
A feeler wheel center shaft 10 (see FIG. 6) is pivotally supported at an intermediate portion between the swing arms 8 and 9 at right angles to the forward direction. The feeler wheel 7 rotates forward and downward by a chain wheel provided on the outside of the gear box 5 provided on the machine frame 1 and receiving power from the tractor and a chain wound around the feeler wheel center shaft 10, and beats when cutting the foliage of the beat. It will not be pushed down by the knife.

Reference numeral 11 denotes a lower link, which is vertically below the connecting point of the front end portion of the swing arm 8 and rotatably connects the front end portion to the front machine frame 1A by a front pivot shaft 12 and the rear end portion. Vertical link 1
A rear pivot shaft 13 is connected to the intermediate portion of 6 (see FIG. 2) and is provided parallel to the swing arm 8. Reference numeral 14 is an earth removing plate of the feeler wheel 7. The vertical link 16 is located in front of the feeler wheel center axis 10, and has an upper end pivotally attached to a vertical link axis 17 (see FIG. 6) fixedly fixed to the swing arm 8 in a penetrating manner. To be installed. Reference numeral 15 is a front parallelogram link, which is composed of the front machine frame 1A, the swing arm 8, the lower link 11, and the vertical link 16.

Referring to FIGS. 2 and 3, 19A is a knife bar, which is a rectangular steel plate and is erected with a vertical line passing through the center of rotation of the feeler wheel 7 as a center line.
As shown in FIG. 3, the knife bar 19A is provided with an upper link shaft 31 projecting from the central portion of the outer surface of the upper half portion. Reference numeral 20 denotes an upper link, the front end of which is rotatably connected to the vertical link shaft 17 on the side projecting outward of the swing arm 8 and the rear end of which is rotatably connected to the upper link shaft 31. 22, shown in FIG.
Reference numeral 23 denotes an upper link mounting bolt for screwing the front and rear ends of the upper link 20 to the vertical link shaft 17 and the upper link shaft 31 to prevent the upper link 20 from coming off.

Reference numeral 21 is a lower link, and as shown in FIG. 6, the center of the front end is screwed into a screw hole 24 at the lower end of the vertical link 16 with a bolt 26, and the center of the rear end is bolted from the rear surface side. The vertical link 16 and the knife bar 19 are screwed into the screw holes 25 (see FIG. 2) below the knife bar 19A so as to be rotatable.
It is attached to A. Reference numeral 18 denotes a rear parallelogram link, and as shown in FIGS. 2 and 5, the vertical link 16 and the upper link 2 are provided.
0, the lower half of the knife bar 19A and the lower link 21

In FIG. 3, reference numeral 35 denotes a hollow protruding shaft, which is fixed above the upper link shaft 31 to the central portion of the outer surface of the knife bar 19A. Reference numeral 38 denotes a knife bar arm, and an upper end bearing 39 and a lower end bearing 40 whose axial center lines are oriented in the left-right direction are fixedly provided on the upper and lower ends of the front arc plate 48, respectively. 41A is an upper lever, the inner side surface of which is in contact with the outer side surface of the upper end bearing 39 of the knife bar arm 38 fitted on the hollow protruding shaft 35. The screw rod 43A fixed orthogonally to one end of the upper lever 41A is inserted from the outside through the upper end bearing 39 of the knife bar arm 38 and then the hollow projecting shaft 35.
5 is tightened to the female screw at the end of the hollow hole. At this time, the end surface of the upper end bearing 39 comes into contact with the base step of the hollow protruding shaft 35, and the knife bar arm 38 keeps the hollow protruding shaft 35 even when tightened.
You can rotate around.

Reference numeral 49 denotes a bracket, the outer side plate of which is located outside the knife bar 19A and which is formed in an inverted U-shape in plan view having mounting portions on both sides thereof.
Both ends are fixed with 0 and a nut 51 (see FIG. 7).
An arcuate slot 52 is formed in the front-rear direction on the outer plate of the bracket 49. The arcuate slot 52 has an arc centered on the hollow protruding shaft 35 with the center line of the slot being a radius of the radius between the centers of the upper and lower end bearings 39, 40 of the knife bar 38. The groove width of the circular arc groove hole 52 is equal to that of the screw rod 4 of the lower lever 42.
4 is a movable width. The center of the rear end of the arcuate slot 52 preferably coincides with the center of rotation of the feeler wheel 7, but it does not have to coincide.

In the lower lever 42, a screw rod 44 fixed at one end at right angles is inserted from the outside through the arcuate slot 52 and then the lower end bearing 40 of the knife bar arm 38, and a nut 45 is screwed onto the inserted end portion. is doing. That is, the knife bar arm 38 is fixed to the bracket 49 by twisting the lower lever 42 and tightening the screw rod 44 to the nut 45. Loosen the screw rod 43A with the upper lever 41A, and lower the lever 42
When the screw bar 44 is loosened and the knife bar arm 38 is swiveled around the hollow protruding shaft 35, the lower end of the knife bar arm 38 moves to a desired position between the front end and the rear end of the arcuate slot 52. You can After reaching the desired position, the upper lever 41A and the lower lever 42 are tightened to fix the position of the knife bar arm 38. The front projecting arc plate 48 is curved so that when the lower end bearing 40 of the knife bar arm 38 is positioned at the rear end of the circular arc slot 52, the inner end face does not contact the rear bearing of the upper link 20. To do so.

As described above, the knife bar 19A can be fixed to the circular arc slot 52 of the bracket 49 by the knife bar arm 38, and the bracket 49 is fixed to the swing arm 8. The knife bar 19A is a rear vertical link of the rear parallelogram link 18 (see FIG. 5). Therefore, the knife bar 19A is connected to the swing arm 8 by the rear parallelogram link 18 and the knife bar arm 38, and is not connected to the central axis 10 of the feeler wheel 7.

The knife bar 19A has a front projection 5 at the bottom.
4 is fixed, and the knife attachment 55 of FIG. 2 is detachably attached via bolts and nuts. In FIG. 2, a square hole 56 is horizontally provided at the lower end of the knife attachment 55.
Is fixed, and the upper piece of the U-shaped square handle 57 is inserted and fixed with the set bolt 58 (see FIG. 7). The knife 53 is attached to the lower surface of the lower piece of the U-shaped square handle 57 with bolts and nuts 59, and horizontally crosses the feeler wheel 7 with a gap between the lower peripheral apex of the feeler wheel 7.

Next, FIG. 4 shows another embodiment. In this embodiment, the knife bar 19A shown in FIG. 2 is replaced with the knife bar 19 and a structure is added in which the gap between the knife 53 and the lower peripheral surface of the feeler wheel 7 can be manually adjusted. As shown in FIGS. 6 and 7, the knife bar 19 has an upper end portion formed in an outwardly bent portion 28, a vertical slot 30 is provided in the upper half portion, and the above-described upper link shaft 31 is provided below the vertical slot. It projects on the outer surface.

Referring to FIGS. 5 and 7, reference numeral 34 denotes a knife vertical adjustment plate, which is a rectangular steel plate having the same width as the knife bar 19 and has a screw rod 4 of the upper lever 41 on the outer surface of the upper half portion.
A hollow projecting shaft 35 through which 3 is inserted is fixed, and the upper end portion is an outward bent portion 36. The knife vertical adjustment plate 34 is attached to a knife bar arm 38 fixed to a bracket 49 by a lower lever 42 via a hollow protruding shaft 35. Then, the knife up / down adjusting plate 34 is piled up along the outer surface of the upper half portion of the knife bar 19, both side bent portions of the U-shaped clamp 46 are brought into contact with the outer end surfaces of both, and the screw rod 43 is attached to the hollow projecting shaft 35.
And the vertical hole 30 are communicated with each other, and the U-shaped clamp 46 is tightened in the screw hole 47 in the rear plate of the U-shaped clamp 46.
It is fixed at 4.

In FIG. 4, reference numeral 32 denotes a screw rod with a handle, which penetrates a hole 29 (see FIG. 6) on the upper surface of the outward bending portion 28 at the upper portion of the knife bar 19 and extends outwardly at the bending portion of the knife up / down adjusting plate 34. 36 is screwed into a screw hole 37 (see FIG. 7) on the upper surface. 33 is a nylon nut and has a knife bar 1
9 is screwed to a screw rod 32 with a handle that penetrates the outer bent portion 28 at the upper part, and is in contact with the back surface of the outer bent portion 28. The threaded rod 32 with the handle can be twisted by the anti-friction action of the nylon nut 33 without tightening the outer bent portion 28.

When the upper lever 41 is loosened and the screw rod 32 with a handle is twisted, the screw rod 43 of the upper lever moves up and down in the slotted hole 30, and the knife bar 19 moves the knife up and down plate through the nylon nut 33. It moves up and down with respect to 34. The knife vertical adjustment plate 34 is fixed to a bracket 49 fixed to the swing arm 8 by a knife bar arm 38. Therefore, the screw rod 32 with a handle moves the knife bar 19 up and down with respect to the swing arm 8 by its twisting.

Next, the operation of the device of the present invention will be described with reference to FIGS. In FIG. 8, as described above, the front parallelogram link 15 is swingably connected to the front machine frame 1A, and the vertical link 16 is shared, so that the rear parallelogram link 1 is provided.
8 are connected to the rear of the front parallelogram link 15 in series. The operation of the knife bars 19 and 19A is the same below. The knife bar 19 will be described.

The knife bar 19 is connected to the swing arm 8 by an upper link 20 supported by a vertical link shaft 17 and an upper link shaft 31. Further, in the knife bar 19, an upper end bearing 39 is pivotally attached to the hollow projecting shaft 35, and a lower end bearing 40.
Is connected to the swing arm 8 by a knife bar arm 38 pivotally attached to the swing arm 8 with a screw rod 43. The knife bar 19 is not connected to the feeler wheel central axis 10 shown by the dotted line, as described above. a is
It is a dimension between the center axes of the hollow projecting shaft 35 and the upper link shaft 31. C1 and C2 are knife gaps between the lower peripheral top surface of the feeler wheel 7 and the knife 53.

When the feeler wheel 7 rides on a beat having a high ground clearance by advancing in the field, the swing arm 8 rises as shown in FIG. As a result of this rise, the hollow protruding shaft 35 moves on an arc having a radius R1 of the arm length of the knife bar arm 38 centering on the screw rod 43 that passes through the lower end bearing 40 of the knife bar arm 38. At the same time, the upper link shaft 31 has the upper link 2 centered on the vertical link shaft 17.
It moves on an arc of radius R2, which is a link length of zero. From the circular arc of radius R1 to the circular arc of radius R2,
The point taken in parallel with the vertical link 16 is the rising position of the upper link shaft 31. Depending on the rising position of the upper link shaft 31,
The rising position of the knife bar 19, which is the rear vertical link of the rear parallelogram link 18, is determined.

When the swing arm 8 is raised, the screw rod 43
Is located in front of the feeler wheel central axis 10, so the amount of rise around the front end connecting point of the swing arm 8 to the front machine casing 1A is smaller than that of the feeler wheel central axis 10. The rising of the screw rod 43 causes the knife bar arm 38 to move.
Is transmitted to the hollow projecting shaft 35 and lifts the knife bar 19, so that the lift amount of the knife bar 19 is increased by the feeler wheel 7.
Is smaller than the rise amount of. As a result, the included angle between the swinging arm 8 and the upper link 20 is smaller in FIG. 9 than in FIG. 8, and the dimension between the center axes of the upper link shaft 31 and the feeler wheel center shaft 10 is smaller than that in FIG. Becomes smaller.

When the dimension between the upper link shaft 31 and the knife 53 is T, the radius of the feeler wheel 7 is R, and the dimension between the upper link shaft 31 and the feeler wheel central shaft 10 is b, the knife gap C is C = T-R-b. 8 and 9, since b in FIG. 9 is smaller than b in FIG.
The knife gap C2 is larger than C1. That is, the upward movement of the feeler wheel 7 widens the knife gap.
Further, when the feeler wheel 7 rides on a beat with a low ground clearance and the swinging arm 8 moves downward in the state of FIGS. 9 to 8, the knife gap with the feeler wheel 7 becomes narrow like C1. When the swing arm 8 moves up and down, the rear parallelogram link 18 and the knife bar arm 38 perform a link operation, and the knife gap is automatically changed.

The position of the screw rod 43 can be moved along the arcuate slot 52 of the bracket 49. Therefore, when the position of the threaded rod 43 is brought closer to the feeler wheel center axis 10, the amount of rise of the threaded rod 43 becomes closer to the amount of rise of the feeler wheel hole center axis 10, the amount of rise of the knife bar 19 increases, and the knife gap increases. Becomes smaller and the position of the screw rod 43 becomes farther away from the feeler wheel central axis 10, the increase amount of the knife gap becomes larger. Since the position of the screw rod 43 can be continuously selected in the circular arc slot 52 of the bracket 49, the upward movement of the swing arm 8,
It is possible to adjust the change of the knife gap due to the downward movement steplessly. When the position of the screw rod 43 is aligned with the feeler wheel central axis 10, the rear parallelogram link 1
8 moves up and down together with the feeler wheel 7, and the knife gap does not change.

[0032]

Since the present invention is configured as described above, it has the following effects. Attach the lower end of the knife bar arm to the bracket that fixes the center of the feeler wheel to the middle of the swinging arm that supports the shaft, and the upper end of the knife bar arm to the upper half of the knife bar. It was connected to a hollow shaft provided. Therefore, the upward and downward movements of the swing arm caused by the feeler wheel riding on the beat can be transmitted to the upward and downward movements of the knife bar by the knife bar arm, and the lower end portion of the knife bar arm is forward of the feeler wheel center axis. By doing so, the vertical movement of the knife bar can be made smaller than the vertical movement of the feeler wheel. That is,
The knife gap, which is the cutting thickness of the beet root crown, can be automatically widened by the upward movement of the feeler wheel and narrowed by the downward movement thereof.

Further, since the lower end of the knife bar arm can be steplessly changed to the arcuate slot of the bracket, the width of the knife gap with respect to the feeler wheel can be adjusted without permission. . Moreover,
To adjust the position of the knife bar arm, loosen the fixing with the upper lever and the lower lever, turn the knife bar arm around the hollow protruding axis to determine the position, and tighten and fix the upper and lower levers. It can be carried out.

Further, the hollow projecting shaft fixed to the knife up / down adjusting plate provided along the outer surface of the knife bar and the vertically elongated hole in the upper half of the knife bar are communicated with each other and screwed into a U-shaped clamp abutting against the back surface of the knife bar. By twisting the upper lever provided with the screw rod, the knife bar can be easily fixed to the knee adjusting plate. In addition, the threaded rod with a handle that penetrates the outward bent portion at the upper end of the knife and is screwed into the knife vertical adjustment plate is
The gap between the feeler wheel and the knife can be adjusted by a simple operation of loosening the upper lever and twisting the screw rod with the handle. Therefore, it is possible to easily adjust the initial knife gap manually to prevent overcutting or undercutting of the root canopy in response to the fact that the ground height of the beet changes depending on the field conditions and cultivation conditions. You can cut the foliage with.

[Brief description of drawings]

FIG. 1 is an external view of a beet stover cutting device according to the present invention.

FIG. 2 is a side view of a main part of FIG.

FIG. 3 is an exploded perspective view of a main part of FIG.

FIG. 4 is a side view of a main portion of another embodiment corresponding to FIG.

FIG. 5 is a side view of a main part with a part of FIG. 4 removed.

FIG. 6 is an exploded perspective view of a main part of FIG.

FIG. 7 is an exploded perspective view of another portion of FIG.

FIG. 8 is a schematic side view of an essential part for explaining the operation of the present invention.

FIG. 9 is a schematic side view of an essential part of the operating state of FIG.

[Explanation of symbols]

1 machine frame 7 feeler wheel 8, 9 Swing arm 11 Down link 15 Front parallelogram link 16 Vertical links 18 High parallelogram link 19, 19A knife bar 20 Top link 21 lower link 28 outward bend 30 vertical holes 32 Threaded Rod with Handle 34 Knife up / down adjustment plate 35 Hollow salient shaft 36 outward bend 38 knife bar arm 39 Upper end bearing 40 Lower end bearing 41 Upper lever 43 screw rod 46 U-shaped clamp 47 screw holes 49 bracket 52 Arc slot 53 knife

Claims (2)

[Claims] A feeler wheel (7) axially supported orthogonally between left and right swing arms (8, 9) extending rearward by rotatably connecting a front end portion to a machine frame (1), A lower link (11) which is rotatably connected to the machine frame (1) and is provided below the swing arm in parallel with the swing arm (8) and an intermediate portion of the swing arm (8). Vertical link to connect (16)
And the front parallelogram link (15) formed by the swing arm (8) and the vertical link (16) are shared, and the rear vertical link is a knife bar (19A), and the middle of the knife bar (19A). Upper and lower links (21) connecting the upper and lower ends of the vertical links (16) to the upper and lower ends of the vertical links (16), respectively, and the front parallelogram along the swing arm (8). Shaped link (1
5) a rear parallelogram link (18) provided at the rear of
A hollow protruding shaft (35) fixed to the outer surface of the upper half of the knife bar (19A) and an arcuate slot (52) formed in the outer plate extending in the front and rear of the knife bar (19A) are used to form the swing arm ( 8) a bracket (49) fixed to the outer side surface and an upper end bearing (39) are pivotally attached to the hollow projecting shaft (35), and a lower end bearing (40) is moved to the circular arc slot (52), A beat bar equipped with a knife bar arm (38) that is fixedly fixedly attached, and a knife (53) that is attached to the lower end of the feeler wheel (7) horizontally at a lower end of the knife bar (19A) with a gap therebetween. Forage cutting device. 2. A knife bar (19) having an outer bent portion (28) at its upper end and a longitudinal slot (30) in the center of the upper half.
And the upper end portion is formed into an outwardly bent portion (36), and the hollow protruding shaft (35) is fixed to the middle portion of the outer side surface of the knife bar (1).
9) Knife up / down adjustment plate (3
4) and a screw rod (32) with a handle which penetrates the outer bent portion (28) of the knife bar (19) from above and is screwed into the outer bent portion (36) of the knife up-down adjusting plate (34).
And abutting against the back surface of the vertical hole (30), the knife bar (1
9) and a U-shaped clamp (46) provided with both side plates abutting both outer end surfaces of the knife up-down adjustment plate (34), and an upper end bearing (39) of the knife bar arm (38) and a hollow in order from the outside. The protruding shaft (35) and the vertical hole (30) of the knife bar (19) are communicated with each other, and one end of a screw rod (43) screwed into the screw hole (47) in the central portion of the rear plate of the U-shaped clamp (46) is connected. The beet foliar cutting device according to claim 1, comprising an upper lever (41) fixed to the.