JP2003023801A - Surface layer tiller equipped with ridging and shaping machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface layer tiller equipped with a ridging and shaping machine, with which the height of the ridging and shaping machine can be readily adjusted so as to keep the position of the ridging and shaping machine to a tilling part constant. SOLUTION: This surface layer tiller in which a rotary type tilling part 8 rotatably supporting tilling tines 11 for tilling on a shaft is attached to a traveling machine body 7 side is furnished with the ridging and shaping machine 14 for forming ridges in a field after tilling in such a way that the ridging and shaping machine can be vertically shaken along a circular arc around the central axis of rotations of the tilling tines 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface cultivator equipped with a ridge shaping machine for cultivating a surface layer of a field to form a ridge.

[0002]

2. Description of the Related Art A surface-type cultivator having a rotary type cultivating unit, which rotatably supports a cultivating claw, attached to a traveling machine, and a ridge shaping machine for forming ridges in a field after cultivating. It is known that the ridges are formed so as to be vertically adjustable, and the ridges are formed by cultivating the surface layer of the field shallowly by running the machine while rotating the cultivating part.

[0003]

At this time, when the subduction amount of the wheels of the traveling machine body into the field changes depending on the hardness of the field, the machine body is tilted so as to keep the plowing depth constant. Since it is necessary to make the depth from the ridge to the bottom of the ridge of the ridge to be shaped constant, it is necessary to adjust the height of the ridge shaping and shaping machine so that the posture of the ridge shaping and shaping machine with respect to the tillage part is kept constant. There is. However, since the height adjustment of the ridge shaping machine is linear in the vertical direction, there is a drawback that the posture adjustment accompanying the vertical adjustment of the ridge shaping machine is not easy.

[0004]

In order to solve the above problems, a surface cultivator having a ridge shaping machine 14 of the present invention has a traveling machine body 7 rotatably supporting a cultivating claw 11 for cultivating. In the surface cultivator to which the rotary type tiller 8 is attached, the ridge shaping and shaping machine 14 for forming ridges in the field after plowing is attached so as to be adjustable up and down. The first feature is that it is supported so as to be vertically swingable along an arc centered on the axis of rotation.

An arc-shaped rod 21 and a bracket 3 for slidably supporting the rod 21 in the axial direction.
4 has a supporting part for vertically swinging the ridge shaping machine 14 by sliding the rod 21 or the bracket 34, so that the center of the arc of the rod 21 coincides with the axis of rotation of the plowing pawl 11. A second feature is that the support portion is provided between the ridge shaping machine 14 side and the traveling machine body 7 side.

The upper surface shaping section 19 for shaping the upper surface of the ridge in the ridge shaping machine 14 has a plurality of leveling plates 26, 27.
The upper surface shaping portion 19 is tilted so that the rear end side is in contact with the ground and the ridge upper surface is flattened, and the rear end surface 26B of the lower flattening plate 26 is formed.
End portion 26 overlapping with the upper leveling plates 27L and 27R in
a is the leveling plates 27L and 27R above the leveling plate 26 below.
The third feature is that the rear end portion 26SL of the side surface 26S overlapping with is chamfered so as not to contact the upper surface of the ridge.

[0007]

1 is a side view of a surface cultivator adopting the present invention, in which an engine 2 is mounted on a machine body frame 1, and a driving force from the engine 2 is transmitted to a transmission in a mission case 3. It is being output. Wheels 4 are attached to a drive shaft projecting from the mission case 3, whereby the wheels 4 are rotationally driven by the driving force from the engine 2.

From the rear side of the transmission case 3, a handle 6 is extended above the engine 2 and above the engine 2. The operator holds the handle 6 to run the machine body, that is, as described above. A walking type traveling body 7 is configured.

Further, a rotary type tiller 8 is connected to the traveling machine body 7, and the tiller 8 has a structure in which a tiller claw 11 is fixed to a left and right claw shaft 9. A driving force is transmitted from the mission case 3 side to the pawl shaft 9, and by rotating the pawl shaft 9, the tilling pawl 11 can be rotated together with the pawl shaft 9.

On the other hand, a bracket 12 is attached to the rear end of the machine body frame 2, and a frame 13 is extended to the rear of the bracket 12. A ridge shaping machine 14 is attached to the rear end of the frame 13 as described later.

With the structure shown above, the surface of the field is cultivated shallowly by rotating the cultivating claw 11 with the claw shaft 9 as the axis to run the machine body, and the ridge shaping machine 14 is used to cultivate the field after the cultivation. A ridge can be formed. The rotary cover 1 is on the upper side of the cultivating part 8 (cultivating claw 11).
The rotary cover 16 is attached to the bracket 12 and the frame 13 side.

As shown in FIGS. 2 and 3, the ridge shaping machine 14 is provided with a left and right rod frame 17, and a left shaping section 18L for shaping the left or right side of the ridge on both left and right sides of the rod frame 17. The right shaping section 18R is attached, and the upper surface shaping section 19 for shaping the upper surface of the ridge is attached between the both shaping sections 18L and 18R. The rod frame 17 is attached to the frame 13 side through a support rod 21 provided at the substantially center thereof.

At this time, the left and right shaping parts 18L and 18R are
It is composed of a groove shaping plate 22 for shaping the ridge and a slope leveling plate 23 for shaping the slope, and is attached to the slope leveling plates 23 of the left and right shaping parts 18L and 18R for mounting the upper surface shaping part 19. Hole 2
4 are formed. The upper surface shaping section 19 is a plate in which a center leveling plate 26 for leveling the central portion of the upper surface of the ridge and a left leveling plate 27L and a right leveling plate 27R for leveling the left side or the right side of the ridge are stacked. Both sides of the center leveling plate 26 are attached to the end portions of the left and right leveling plates 27L and 27R.

A tail wheel 28 is axially supported by the left and right leveling plates 27L and 27R. The left and right leveling plates 27L and 27R are respectively fixed with pins 29 projecting outward, and the pins 29 are inserted into the mounting holes 24 of the left and right slope leveling plates 23 to prevent them from coming off. As a result, the left and right leveling plates 27L, 27R become
3, that is, the left and right shaping parts 18L, 18
The upper surface shaping unit 19 is attached between the Rs. At this time, the upper surface shaping section 19 is inclined so that the rear end side is grounded and the upper surface of the ridge is leveled.

On the other hand, as shown in FIGS. 1 and 4, the support rod 21 is curved in an arc shape having a diameter larger than the diameter of the circular rotation locus of the tip of the tilling claw 11, and is shown in FIG. As shown in FIG.
Is attached through. A mounting surface 32 for mounting the upper surface shaping section 19 is formed on the lower end of the support rod 21, and the upper surface shaping section 19 (the center leveling plate 2 is attached to the mounting surface 32.
6) is screwed through a mounting hole 30 formed in the central leveling plate 26.

A mounting rod 33 is mounted on the rear end portion of the frame 13 so as to be vertically slidable and positionable, and the supporting rod 2 is mounted on the mounting rod 33.
A U-shaped bracket 34 that supports 1 to be slidable in the axial direction is fixed. And support bracket 3
Positioning bolt 37 with a handle 36 on the back of 4
Is provided as a positioning portion.

As a result, the support rod 21 is attached to the bracket 3
4, by rotating the handle 36 and pressing the tip of the positioning bolt 37 against the peripheral surface of the support rod 21 (pressing), the position of the support rod 21 with respect to the bracket 34 can be adjusted, and the ridge is raised. The height of the shaping machine 14 with respect to the machine body can be set and adjusted along the arc shape (arc locus) of the support rod 21.

The mounting rod 33 is constructed so that its position with respect to the frame 13 is fixed by screwing a bolt 38 provided on the rear end side of the frame 13. As described above, the support rod 21, the bracket 34, the handle 36, the bolt 37, the mounting rod 33, and the like constitute the support portion of the ridge shaping machine 14.

The mounting position of the supporting portion with respect to the airframe is as follows.
3, the support rod 21
The (axis C of the support rod 21) becomes a concentric arc with respect to the rotation locus A of the tip of the plowing claw 11 described above, and the support rod 21
The center of the curve (arc) is set to coincide with the axis of the pawl shaft 9 in a side view.

Thereby, the bracket 3 of the support rod 21
4 by adjusting the position of the support rod 21
Moves on a concentric circle with respect to the rotation locus A of the tip of the tilling claw 11, and the ridge shaping machine 14 adjusts the height with respect to the machine body in an arc shape around the axis of the claw shaft 9 (the rotation axis of the tilling claw 11). Done.

Therefore, even if the height of the ridge shaping machine 14 is adjusted, the posture of the ridge shaping machine 14 with respect to the tilling section 8 (rotation locus A of the tilling claw 11) does not change, and the ridge shaping machine 14 is not changed.
The gap S with the tilling claw 11 (rotation locus A of the tip of the tilling claw 11) on the front side of is constant, and the groove shaping plate 22 and the claw shaft 19 are provided.
The distance between and does not change.

With the above structure, the wheel 4 is adapted to the hardness of the field.
If the amount of submersion of the field into the field changes, the ridge shaping machine 1
By adjusting the height of 4, the posture of the ridge shaping machine 14 with respect to the tilling part 8 is kept constant even if the body is tilted so as to keep the tilling depth constant as shown in FIG.
The depth D from the field scene to the bottom of the shaped furrow is constant, and stable tilling and furrowing work can be performed.

In other words, by the support structure of the ridge shaping machine 14 configured as described above, the ridge is made to have a constant depth from the field scene to the bottom of the groove to be shaped according to the hardness of the field. The posture of the shaping machine 14 can be easily adjusted by adjusting the position of the support rod 21 with respect to the bracket 34.

Conventionally, the frame 13 of the surface cultivator is provided with a hole for attaching a ridge shaping machine or the like so as to be linearly movable in the vertical direction. Therefore, by making the mounting rod 33 into a size that can be inserted into the hole of the frame 13 of the conventional surface cultivator, it is possible to easily vertically adjust the ridge shaping machine in the conventional surface cultivator as described above. Can be installed.

A plurality of mounting holes 24 for the left and right slope leveling plates 23 and a plurality of mounting holes 30 for the central leveling plate 26 are provided respectively, and the position of the upper surface shaping section 19 relative to the left and right shaping sections 18L, 18R (high The height can be adjusted, that is, the height of the ridges formed can be adjusted.

On the other hand, the left and right shaping parts 18L, 18R are provided with a pipe 35 fitted on the rod frame 17, the pipe 35 is fitted on the rod frame 17, and bolts 39 attached to the pipe 35 are tightened. , Bolt 3
By pressing the end portion of 9 to the rod frame 17, the left and right shaping portions 18L and 18R are
Positioned and fixed to.

The rod frame 17 has a polygonal (hexagonal in the present embodiment) cross section, so that the right and left directions can be adjusted without changing the mounting angles of the shaping portions 18L and 18R with respect to the rod frame 17. You can slide it to adjust the horizontal position. The shaping unit 18L for the rod frame 17,
By changing the attachment angle of 18R, the posture of the ridge shaping machine 14 with respect to the tilling section 8 can be adjusted.

Further, the central leveling plate 26 and the left and right leveling plates 27
The left and right leveling plates 27L and 27R are placed on and connected to the upper surface of the central leveling plate 26, and are fixed to the long holes 41 formed in the left and right leveling plates 27L and 27R. It is fixed so as to be slidable from side to side via a bolt 42.
Accordingly, the left and right width of the upper surface shaping section 19 can be changed and adjusted, and the width of the ridge to be shaped can be adjusted by adjusting the left and right mounting positions of the left and right shaping sections 18L and 18R with respect to the rod frame 17. it can. At this time, the rod frames 1 of the left and right shaping parts 18L and 18R
Since the attachment angle with respect to 7 does not change, the posture of the ridge shaping machine 14 does not change.

On the other hand, the upper surface shaping section 19 has left and right leveling plates 27L and 27R mounted on the upper surface of the central leveling plate 26 as described above, and is located below as shown in FIGS. The left and right end portions of the rear end surface 26B of the center leveling plate 26 and the left and right side surfaces 26S overlap the left or right leveling plate 27L or 27R.

Then, the left or right leveling plate 27L or 27R
Left and right ends 2 of the rear end surface 26B of the center leveling plate 26 overlapping with
6a is chamfered in a triangular shape to form a notch.
As a result, as shown in FIG. 7, the rear end portions 26SL of the left and right end surfaces 26S of the central leveling plate 26 are located h1 above the rear end surfaces 27B of the left and right leveling plates 27L or 27R, and the leveling of the ridges is smoothed. Sometimes it doesn't touch the top of the ridge.

On the other hand, the rear end surface 26B other than the chamfered portion of the central leveling plate 26 is located below the lower end of the rear end surface 27B of the left and right leveling plates 27L and 27R by h2, and the upper surface shaping section 19 is Rear end surface 26B of the center leveling plate 26
Flattens the upper surface of the ridge while forming a recess of a depth (h2) protruding from the lower end of the rear end surface 27B of the left and right leveling plates 27L and 27R on the upper surface of the ridge.

At this time, the contact of the center leveling plate 26 with the upper surface of the ridge starts from the middle portion Z of the chamfered surface 26C as shown in FIG. 7 and gradually deepens to the rear end surface 26B. Therefore, as shown in FIG. 8, the depression 44 on the upper surface of the ridge is formed from the start of contact with the upper surface 46 of the ridge of the center leveling plate 26 to the rear end surface 26B.
The ridged surface 46 is formed by the inclined surface 43 formed by the contact of
To be smoothly and continuously formed. The upper surface shaping portion 19 smoothly forms the depression.

As a result, a depression is formed on the upper surface of the ridge, but the upper surface becomes smooth, and the depression 44 formed on the upper surface of the ridge 46.
However, it does not become a dent of a sudden step as shown in FIG.
Even when the formed ridges are used as a seed bed, germination is stable and germinated seedlings are uniform.

[0034]

According to the structure of the present invention constructed as described above, the height of the ridge shaping machine is adjusted with respect to the traveling machine body by vertically swinging along an arc centering on the rotary shaft center of the tilling claw. Therefore, when the amount of subduction of the wheel into the field changes depending on the hardness of the field, the posture of the ridger shaping machine with respect to the tilling part is constant even if the aircraft is tilted so that the tilling depth is constant. Therefore, it is possible to perform stable tilling and ridge raising work. That is, there is an effect that the height of the ridge shaping machine can be easily adjusted so that the posture with respect to the tillage part is constant.

By sliding the rod or the bracket, the ridger shaping machine can be easily swung up and down along an arc centered on the rotary shaft center of the tilling claw, and the height adjustment of the ridger shaping machine can be performed more accurately. In addition to being able to carry out, by attaching the support part to the conventional surface cultivator, the surface layer equipped with the ridge shaping machine that can easily adjust the conventional ridge cultivator up and down in an arc shape. There is also an effect that it can be used as a cultivator.

Further, by chamfering the rear end portion of the lower-side leveling plate forming the upper surface shaping section, which overlaps the upper-side leveling plate, a recess on the ridge formed by stacking a plurality of leveling plates. Is continuous from the convex surface of the ridge by a gentle sloping surface rather than a steep step, and even when the ridge formed by this is used for the seed bed, germination is stable and the germinated seedlings are uniform.

[Brief description of drawings]

FIG. 1 is a side view of a surface cultivator.

FIG. 2 is a plan view of a ridge shaping machine.

FIG. 3 is a rear view of the ridge shaping machine.

FIG. 4 is an exploded perspective view of a rod frame portion.

FIG. 5 is a side view of the surface cultivator in which the subduction amount of the wheels is changed with respect to FIG.

FIG. 6 is an upper perspective view of the upper surface shaping section.

7 is a sectional view taken along line XX of FIG.

FIG. 8 is a cross-sectional view of a ridge that is shaped by the upper surface shaping unit of the present invention.

FIG. 9 is a cross-sectional view of a ridge that is shaped by a conventional upper surface shaping unit.

[Explanation of symbols]

7 traveling machine body 8 tilling part 11 tilling claws 14 ridge shaping machine 19 upper surface shaping section 21 rod 26 central leveling plate (lower leveling plate) 26a left and right ends of the rear end face of the central leveling plate (lower leveling plate Overlapping edge) 26B Rear end face of the central leveling plate (rear end face of the lower leveling plate) 26S Left and right side faces of the central leveling plate (side faces of the lower leveling plate) 26SL Left and right side faces of the central leveling plate Rear end (rear end 27L of the lower side of the leveling plate, left side leveling plate 27R, right side leveling plate 34 bracket

Claims (3)

[Claims] 1. A plowing claw (1) for plowing on a traveling body (7).
(1) A rotary type tiller (8) that rotatably supports the surface was mounted on a surface cultivator, and a ridge shaping machine (14) for forming ridges in the field after cultivating was attached so as to be vertically adjustable. What is claimed is: 1. A surface cultivator comprising a ridger shaping machine, wherein the ridger shaping machine (14) is supported so as to be vertically swingable along an arc centered on a rotation axis of a tilling claw (11). 2. A rod (21) having an arc shape and a bracket (34) for slidably supporting the rod (21) in the axial direction, the rod (21) or the bracket (34) being slid. The ridger shaping machine has a supporting portion for vertically swinging the ridger shaping machine (14) so that the center of the arc of the rod (21) coincides with the axis of the rotary shaft of the tilling claw (11). A surface cultivator provided with the ridge riser of Claim 1 provided between (14) side and a traveling body (7) side. 3. An upper surface shaping section (19) for shaping the upper surface of the ridge in the ridge shaping machine (14) has a plurality of leveling plates (2).
6), (27L), (27R) are vertically stacked to form a plate shape, and the upper surface shaping section (19) is inclined so that the rear end side is grounded and the ridge upper surface is leveled, and the lower leveling section (19) is flattened. An end portion (26a) of the rear end surface (26B) of the flat plate (26) which overlaps with the upper flat plate (27L) and (27R) is provided with an upper flat plate (27L) of the lower flat plate (26). ), (27
The surface cultivator equipped with the ridge shaping machine according to claim 1 or 2, wherein the rear end portion (26SL) of the side surface (26S) overlapping with R) is chamfered so as not to contact the upper surface of the ridge.