JPH0126190Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for cutting stems and leaves in an excavator for digging up root crops such as carrots and radish.

[Prior Art] The present applicant has filed an application as Utility Model Application No. 1983-7400 regarding a digging machine for root crops.

This excavator works by plowing a blade into the deep part of the soil between furrows, and by making the blade move in such a way that both edges of the blade move up and down alternately, crops are planted. This is a machine that expands and softens the soil in the ridges, making it easier to pull out carrots, radishes, etc.

However, the furrow into which the blade plate is to be plowed is covered with the stems and leaves of crops planted on the left and right furrows, and as the excavator advances, these stems and leaves are removed. , it gets entangled with the pillars that make up the excavator and the surrounding parts, which creates a large amount of resistance.
Unable to perform smooth excavation work.

[The problem that the idea aims to solve]

In view of the above-mentioned problems with excavators, the present invention allows crop excavation work to be carried out without any hindrance by cutting the stems and leaves of crops that cover the furrows and cutting them into left and right parts. This was done with the aim of making it possible to do so.

[Means to solve the problem]

The present invention is an excavator for root crops that has a blade plate for swelling and softening the soil attached to the lower end of a column extending downward from the rear end of the machine frame. The fixed blade consists of a pair of fixed blades and a push-cutting blade for cutting the stems and leaves of the plant, and a pair of scooping plates for pushing and scooping up the stems and leaves to the left and right just before cutting. , the rear end is fixed to the column body in a state where the front end is inclined so as to be lower than the rear end, and the pushing cutting blade is arranged above the fixed blade, and the rear end is fixed. The pair of scooping plates are pivotally attached to the rear end of the blade so as to be rotatable in the vertical direction, and the pair of scooping plates are arranged along the inclination direction of the fixed blade on both sides of the fixed blade, and the front end thereof is connected to the fixed blade. By reciprocating the push-cutting blade in the vertical direction using a reciprocating rotation means, the stems and leaves scooped up by the pair of scooping plates are separated between the push-cutting blade and the fixed blade. This is a stem/leaf cutting device for a root vegetable excavator, which is characterized by cutting between the edges and cutting left and right.

[Effect of invention]

As the excavator moves through the furrow, a pair of scooping plates placed at both ends of the fixed blade are tilted so that the rear end is higher than the front end, and the crops covered in the furrow are removed. The stems and leaves of the plant are separated from side to side and scooped up.

The rear end of the pushing cutting blade is pivotally attached to the rear end of the fixed blade so that it can rotate in the vertical direction.Moreover, since this pushing cutting blade is arranged above the fixed blade, it can be moved by the reciprocating rotation means. When the push-cutting blade rotates downward, the stems and leaves scooped up by a pair of scooping plates and guided between the fixed blade and the push-cutting blade are It is cut along the edge and divided into left and right parts.

This prevents the stems and leaves of the crop from getting entangled with the column to which the excavator's blade plate is attached and the surrounding parts, making it possible to smoothly dig up crops with the excavator. becomes.

〔Example〕

An embodiment of the invention is shown in FIGS. 1-3.

A connecting box 1 is fixed to the rear end F of the frame of a tiller (not shown), and a connecting fitting 2 is fixed to the front end of the machine frame 4 of the excavator. 1 is connected with the connecting pin 3, so that the excavator is connected to the rear end portion F of the tiller frame. A fixing plate 5 is interposed and fixed between the connecting fitting 2 and the front end surface of the machine frame 4, and the plate surface of the fixing plate 5 is perpendicular to the longitudinal direction of the machine frame 4. are doing. Screw rods 6 are screwed into both ends of the fixing plate 5, and the head of each screw rod 6 is pressed against the inner surface of the connecting box 1.
prevents it from swinging from side to side.

An upper end portion of a column 7 is fixed to the rear end of the machine frame 4, and the column 7 extends downward from the rear end of the machine frame 4. The lower end of this column 7 is located slightly forward of the upper end, and the column 7 is slightly inclined with respect to the vertical line. A support cylinder 8 is attached to the lower end of the column 7.
is fixed along the front-rear direction, and the front end of the support tube 8 is fixed to the column body 7 with the front end being slightly lower than the rear end, so that its axis is slightly inclined with respect to the horizontal line. .

A rotating shaft 9 is rotatably fitted into the support tube 8, and a blade plate 10 is fixed to the front end of the rotating shaft 9. This blade plate 10 is fixed to the front end of the rotating shaft 9 with the rear end rising higher than the front end, and the width of the blade plate 10 increases from the front end to the rear end.

A rotating tube 11 is fitted onto the rotating shaft 9, and the swinging rod 1
The lower end of 2 is fixed to the rotating tube 11, and the swinging rod 12
A clamping plate 13 and a holding plate 14 fixed to the lower end of the
The rear end portion of the rotation shaft 9 is held between the two in a non-rotatable manner. The clamping plate 13 and the holding plate 14 are integrally connected by a clamping tightening screw 15.

As shown in FIGS. 1 and 2, the swinging rod 1
2 is arranged at the rear of the column 7, and its legs run vertically almost parallel to the column 7, and its upper part is bent laterally to form a bending section. It's summery.

An outer ring 18 is fixed to the lower end of the connecting rod 16, and an inner ring 17 is rotatably fitted to the end of the bent portion of the swinging rod 12.
By rotatably supporting the inner ring 17, the connecting rod 16 and the swinging rod 12 are connected.

A U-shaped metal fitting 19 is fixed to the upper end of the connecting rod 16. A ring ring 22 is rotatably fitted onto a crank pin 21 that projects from the crank 20. A connector 23 is provided on the lower side of the ring ring 22 and is attached to the U-shaped metal fitting. 19 is pivotally supported.

Bearing tubes 25 and 26 are fixed to both sides of the part where the machine frame 4 and the column body 7 are fixed together, respectively, with their axes horizontal and coaxial. A transmission shaft 24 is rotatably fitted into the bearing tubes 25 and 26 . A transmission pulley 27 and a crank 20 are attached to the right and left ends of the transmission shaft 24, respectively. A belt 28 is hung between a power take-off shaft (not shown) provided on the tiller and the transmission pulley 27.

Next, the portion of the stem/leaf cutting device according to the present invention will be explained.

A through hole 31 is fixed to the front side of the column 7, and the handle of the support fitting 30 is inserted through the through hole 31 and fixed at a predetermined position. A rear end portion of the fixed blade 29 is fixed to the support fitting 30. The fixed blade 29 is slanted and fixed to the support fitting 30 so that the front end is lower than the rear end.

The height of the fixed blade 29 is adjusted by adjusting the fixed position of the support fitting 30 with respect to the through hole 31.

A pair of scooping plates 32, 3 are provided on both sides of the fixed blade 29.
2' are arranged along the inclination direction of the fixed blade 29, and the front end portions of a pair of scooping plates 32, 32' are fixed to the front end portion of the fixed blade 29.

The pressing cutting blade 33 that is paired with the fixed blade 29 is arranged above the fixed blade 29, and the pressing cutting blade 33 is arranged above the fixed blade 29.
A portion of the connecting bolt 40 that connects the fixed blade 29 and the push-cutting blade 33 by pivoting the rear end of the fixed blade 29 to the rear end of the fixed blade 29 so as to be rotatable in the vertical direction via a connecting bolt 40. is provided with a push spring 34 for constantly bringing the double blades 29, 33 into sliding contact with a predetermined pressure.

A ring ring 38 is rotatably fitted onto the crank pin 21, the rear end of a connecting rod 37 is fixed to the ring ring 38, and a screw rod 36 is attached to the bent portion of the front end of the connecting rod 37. 37 are screwed together along the length direction, and the front end of a swinging rod 35 is fixed to the front end of the pushing cutting blade 33, and the rear end of the swinging rod 35 and the front end of the screw rod 36 are connected to each other. is pivoted. Spiral rod 3
A lock nut 39 is screwed onto the rod 6, and the total length of the rod R, in which the connecting rod 37 and the screw rod 36 are integrated, is adjusted by the lock nut 39.

In addition, in the figure, a indicates a root vegetable crop, b indicates a stem portion of the root vegetable crop, and c indicates a leaf portion of the root vegetable crop. Further, A indicates the direction of movement of the excavator.

When the excavator moves in the direction of arrow A while being towed by the tiller, the power of the power take-off shaft of the tiller is transmitted to the transmission shaft 24 via the belt 28 and the transmission pulley 27, and this transmission shaft 24 Rotate. The rotation of the transmission shaft 24 causes the crank pin 21 to perform a circular motion, and the circular motion of the crank pin 21 causes the connecting rod 16 to reciprocate in the vertical direction.

An outer ring 18 is fixed to the lower end of the connecting rod 16, and an inner ring 17 is rotatably fitted to the end of the bent portion of the swinging rod 12.
The connecting rod 16 and the swinging rod 12 are connected by the inner ring 17 being pivotally supported by the connecting rod 16.
When the connecting rod 16 makes a reciprocating motion in the vertical direction,
The bending and extending portion of the swinging rod 12 connected to the swinging rod 12 performs a reciprocating movement in the left-right direction, whereby the swinging rod 12 is reciprocated left and right about its lower end.

Due to such reciprocating rotation of the swinging rod 12, the rotating shaft 9 fixed to the lower end of the swinging rod 12 is rotated.
is rotated back and forth from side to side. Since a blade plate 10 is fixed to the front end of the rotation shaft 9, the blade plate 10 rotates integrally with the rotation shaft 9 around the axis of the rotation shaft 9.

Due to this movement of the blade plate 10, the two blade edges alternately move up and down, thereby lifting the soil between the furrows, crushing it, and softening it. In this way, the soil between the furrows and around the crops is swollen and softened, so that the crop a and the soil are separated, the resistance to extracting the crop a is reduced, and the crop a can be easily extracted. .

The above-mentioned action is an action in which the soil between the furrows is expanded and softened by the blade plate 10, and although it is not an action of the present invention, it is an action related to the present invention, so it has been explained together.

Next, the function of the cutting device according to the present invention is that when the crank pin 21 makes a circular motion, the rod R, which is made up of the connecting rod 37 and the screw rod 36, reciprocates back and forth. By reciprocating in the front and back direction, the push cutting blade 33 moves the connecting bolt 4
It reciprocates vertically around 0.

Therefore, as the excavator advances, the pair of scooping plates 32, which are arranged and fixed on both sides of the fixed blade 29,
32' crops a that cover the furrows
The stem part b or the leaf part c of the tree is pushed aside and scooped up. The stem part b and leaf part c of the crop a that have been scooped up by a pair of scooping plates 32 and 32' are as follows:
The double-edged blade 2 is guided between the fixed blade 29 and the push-cutting blade 33.
9, 33, and is cut into left and right parts. Therefore, stem part b or leaf part c of crop a
However, it is possible to prevent the excavator from becoming entangled with the pillar body 7 of the excavator or members around it, and therefore, the crop a can be dug up smoothly without any hindrance.

[Effect of idea]

The present invention consists of a pair of fixed blades and push cutting blades for cutting the stems and leaves of root crops, and a pair of scooping plates for pushing and scooping the stems and leaves right and left just before cutting. Due to the synergistic effect, the stems and leaves covering the furrows can be cut and cut into left and right parts, so the stems and leaves of the root crop can become entangled with the parts that make up the excavator. can be prevented.

This eliminates wasteful traction resistance caused by entangled stems and leaves, making it possible to dig up the crop smoothly. It is possible to prevent this from happening.

[Brief explanation of the drawing]

Fig. 1 is a side view of an excavator equipped with a cutting device according to the present invention, and Fig. 2 is a plan view thereof.
FIG. 3 is a perspective view of a portion of the cutting device.
The explanations of the symbols of the main parts constituting the present invention are as follows. a: root crop, b: stem of root crop, c: leaf of root crop, 4: machine frame, 7: column, 10: blade plate,
20: Crank (reciprocating means for rotating the push cutting blade), 2
1: Crank pin (means for reciprocating the push cutting blade), 2
9: Fixed blade, 32, 32': Scooping plate, 33: Push-cutting blade, 35: Rocking rod (reciprocating means for rotating the pushing-cutting blade), 3
6: Screw rod (reciprocating means for rotating the pushing cutting blade), 37: Connecting rod (reciprocating rotating means for the pushing cutting blade).

Claims (1)

[Scope of Claim for Utility Model Registration] A machine for digging root crops having a structure in which a blade plate for swelling and softening the soil is attached to the lower end of a column extending downward from the rear end of the machine frame. , consisting of a pair of fixed blades and pushing cutting blades for cutting the stems and leaves of root crops, and a pair of scooping plates for pushing and scooping the stems and leaves to the left and right just before cutting, The fixed blade has a rear end fixedly attached to the column in a state where the front end is inclined so that the rear end is lower than the rear end, and the push cutting blade is arranged above the fixed blade, and The ends of the scooping plates are pivotally connected to the rear end of the fixed blade so as to be able to rotate in the vertical direction, and the pair of scooping plates are disposed on both sides of the fixed blade along the direction of inclination of the fixed blade, and the front end thereof A part is fixed to the front end of the fixed blade, and by reciprocating the push-cutting blade in the vertical direction using a reciprocating rotation means, the push-cutting blade scoops out the stems and leaves scooped up by the pair of scooping plates. A device for cutting stems and leaves in a digging machine for root crops, characterized in that the stems and leaves are cut into left and right parts by cutting between the blade and the fixed blade.