JP2003219701A - Dashing-preventing structure for tiller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dashing-preventing structure for a tiller capable of carrying out a prescribed deep tillage by evading shallow tillage by the resistance in the traveling direction while preventing the dashing accompanied with the rotation of a tillage tine, and capable of smoothly carrying out the tillage operation at a prescribed depth while preventing the sinking of a tillage case part accompanied with the resistance of a resisting rod. <P>SOLUTION: This tiller has a rotary tilling part 3 installed in a traveling machine body 1a. An attaching blanket 50 having a sinking-preventing face 52 for progressing the tillage case part 2c in the ground by the front tilted face is installed in the lower end of the tillage case part 2c for supporting a rotary part 3a of the tillage part 3 so as to be rotatable, and a resistant rod 6 in approximately the vertical posture traveling in a state stuck into the ground is detachably fixed to the rear lower part of the sinking-preventing face 52. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a dashing prevention structure for a tiller.

[0002]

2. Description of the Related Art Conventionally, a walk-type tiller equipped with a center rotary type tiller at the rear of a traveling machine having left and right wheels is used for the tilling work performed by rotating the tiller claws while the machine is traveling. In order to prevent this, the aircraft may suddenly start (dashing) due to the rotating force of the tilling claws due to the load fluctuation of the tilling claws.To prevent this, at the bottom of the tilling case part located at the center of the wheel width, The structure is provided with a dashing prevention structure in which a resistance rod that projects into the ground and imparts resistance in the traveling direction is provided in a protruding manner.

[0003]

In the dashing prevention structure having the above-mentioned conventional structure, the resistance rod and the mounting bracket for mounting and fixing the resistance rod to the tillage case are integrated, so that the resistance rod is constructed. If it is worn or deformed, both the resistance rod and the mounting bracket must be replaced.
There is a problem that the cost of parts is high, and the work of tightening and loosening a plurality of mounting screws for connecting the tilling case portion and the mounting bracket is complicated and time-consuming when the resistance rod is attached and detached. In addition, in fields with different hardness such as clay, sandy soil, dry rice fields, wet rice fields, etc., the resistance rod integrated with the mounting bracket cannot adjust the resistance in the traveling direction, so make it suitable for each field. In addition, it is difficult to give proper advancing direction resistance, there is a problem that plowing to a predetermined depth is not performed for each field, and dashing prevention cannot be sufficiently exerted.

[0004]

In order to solve the above problems, a dashing prevention structure for a tilling implement according to the present invention is a tilling implement in which a rotary type tiller 3 is provided on a traveling machine body 1a. At the lower end of the cultivating case portion 2c that rotatably supports the rotary portion 3a, a mounting bracket 50 having a subsidence prevention surface 52 for advancing through the ground with a front inclined surface is provided, and at the lower rear portion of the subsidence prevention surface 52, It is characterized in that a resistance rod 6 which is capable of plunging into the ground and advancing in a substantially vertical posture is detachably attached and fixed.

Second, the auxiliary resistance member 7 is provided below the resistance rod 6.
It is characterized in that it is detachably provided.

[0006]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 is a tilling implement having a rotary type tilling part 3 at the rear of the traveling machine body 1a, and the traveling machine body 1a includes a transmission case 2 having a V-shape in a side view, which will be described later, and the transmission case 2. The transmission case 2 is provided with an engine frame 20 mounted on and fixed to the front part and on which the engine 1b is mounted. The transmission case 2 has a traveling guide lever 4 and a cultivating gear shift lever 41 extending rearward through a shift guide portion 4 at the uppermost portion thereof. The base part of the forked handle 42 is attached and fixed to the rear middle part of the transmission case 2, the side clutch levers 43 are provided on the left and right rear parts of the handle 42, and the main clutch lever 45 is provided on the left side. It has a prepared structure.

The structure of the transmission case 2 will be described with reference to FIGS. 1 and 4. The transmission case 2 is formed by joining a split case and a substantially symmetrical left case 2L and a right case 2R to each other. An input case portion 2a having an input pulley shaft 1c, a gear shift transmission mechanism (not shown), and the like, which is input-driven from the engine 1b by a belt transmission mechanism on the upper side, and is formed downward from the input case portion 2a side. Axle 11 with wheels 10
A wheel case part 2b for supporting the shaft and a tilling case for supporting the left and right rotary shafts 31 extending from the input case part 2a in a rearwardly inclined manner and having a plurality of tilling claws 30 planted through the metal part 21. The part 2c and the part 2c are integrally formed in a V shape in a side view.

Further, the rotary shaft 31 has a sprocket 32 provided at the center thereof, and the input case portion 2a.
The cultivating part transmission chain 33 provided from the side of the speed change transmission mechanism is wound around so as to be transmitted in a rotationally variable manner, and rotary parts 3a are formed on the left and right of the cultivating case part 2c. The cultivating part 3 has a cultivating part cover 35 covering the upper part of the rotary part 3a attached and fixed to the middle part of the cultivating case part 2c, and the cultivating part cover 35 has side covers 36 and 36 on both sides. Further, a tail wheel 37 for adjusting the plowing depth is provided at the rear of the central portion, and a dashing prevention structure 5 according to the present invention is provided at the lower portion of the plowing case portion 2c, so that an appropriate depth by the rotary portion 3a can be obtained. While cultivating satisfactorily, dashing at the time of cultivating is prevented and cultivating work can be performed smoothly.

That is, the dashing prevention structure 5 shown in FIGS. 5 and 6 is a mounting bracket 50 formed in the above-mentioned U-shape in cross section so as to be fitted and attached to the lower front surface side of the cultivating case portion 2c. A round rod-shaped resistance rod 6 is detachably attached and fixed to the lower rear end of the attachment bracket 50 in a substantially vertical posture. Further, the mounting bracket 50 has a flat sloped sinking prevention surface 52 on the front side surface of the U-shaped cross section, and the mounting pieces 5 on both sides at the rear of the sinking prevention surface 52.
The holder cylinder 55 having the mounting screw 60 is integrally formed between the three, and the mounting piece 53 has a plurality of front and rear positions at the cultivating case portion 2.
An attachment hole 56 is formed in the lower front surface of c for stable attachment.

In the mounting bracket 50, the resistance rod 6 is provided substantially vertically below the rotary shaft 31 in a state of being attached to the tillage case portion 2c, and as shown by the solid line and the dotted line in FIG. By tightening and tightening the mounting screw 60,
It is made possible to adjust the protruding length of the resistance rod 6 in the up-down direction, whereby the amount of the resistance rod 6 to be rushed into the uncultivated ground immediately below the tilling case portion 2c can be adjusted, and at the same time, the resistance rod 6 can be adjusted. It is designed to be easily exchanged.

At this time, the mounting bracket 50 has a subsidence prevention surface 5 which covers the lower front surface of the tillage case 2c in a wide width.
As shown in FIG. 5, 2 is provided in a forward inclined shape so as to have a subsidence prevention angle θ with respect to the receding inclined surface of the cultivating case portion 2c, and the plowing claw 30 of the rotary portion 3a moves to the ground when plowing. With deep digging, the cultivating case portion 2c tends to largely sink downward with the axle 11 as a fulcrum, while the plowing portion cover 35 imparts resistance in the traveling direction by the wide front sloping surface. Sinking prevention can be performed well. That is, the subsidence prevention surface 52 having the steep settlement angle θ that is steeper than that of the cultivating case portion 2c makes it possible to efficiently suppress excessive subsidence of the cultivating case portion 2c while also providing resistance in the traveling direction. There is.

Further, as shown in FIG. 3, the subsidence prevention surface 52 having a subsidence prevention angle θ with the cultivating case portion 2c, when the soil adhered to the subsidence preventing surface 52 is placed in front of the cultivating case portion 2c, As the plowing claws 30 on both sides are rotated, the plowing claws 30 can be quickly and quickly scraped off along the steep inclination angle thereof. Therefore, as in the above-described gently sloping plowing case portion 2c having no sink preventing surface 52, It has the feature that it does not increase the resistance due to adhered soil.

The tiller implement 1 equipped with the dashing prevention structure 5 constructed as described above comprises a rotary section 3 of the tiller section 3.
At the lower end of the cultivating case 2c that rotatably supports a, a mounting bracket 50 having a subsidence prevention surface 52 for advancing through the ground with a front inclined surface is provided, and a substantially vertical posture is provided at the lower rear of the subsidence prevention surface 52. A resistance rod 6 that plunges into the ground and advances
Since the wheel is detachably attached and fixed, the resistance rod protruded from the rotation locus of the tilling pawl 30 by a predetermined length during the tilling work performed by causing the wheel 10 and the tilling pawl 30 to move in the arrow (normal) direction. 6 gives a certain resistance in the traveling direction to the airframe in a state that it rushes vertically into the uncultivated ground,
Dashing due to rotation of the tilling claw 30 can be prevented, and shallow tilling can be avoided by the resistance in the traveling direction, and predetermined deep tilling can be performed.

At this time, the mounting bracket 50 provides the above-mentioned resistance in the advancing direction by the subsidence prevention surface 52 having a wide subsidence prevention angle θ, and prevents the subsidence of the cultivating case portion 2c due to the deep cultivating. It is possible to smoothly perform plowing work of a predetermined depth. In addition, a dashing prevention structure 5 in which a resistance rod 6 is vertically adjustable with respect to the mounting bracket 50
Is, for example, in a field of soft soil, increasing the protrusion amount of the resistance rod 6 can increase the resistance in the traveling direction,
On the other hand, in a field with hard soil, it is possible to reduce the traveling direction resistance by shortening the protruding amount of the resistance rod 6. Therefore, by using the traveling direction resistance adapted to the conditions such as hardness and softness of each field, it is possible to efficiently perform tilling work at a predetermined depth. There are advantages such as being able to perform well and appropriately. When the resistance rod 6 is worn or deformed during long-term plowing work, the mounting screw 60 is loosened and only the resistance rod 6 is removed without removing the mounting bracket 50 unlike the conventional one, and a new resistance rod 6 is removed. Since 6 can be attached and fixed, replacement work of the resistance rod 6 can be easily performed at low cost.

Further, in the dashing prevention structure 5, the auxiliary resistance member 7 as shown in FIG. 7 is detachably provided on the lower portion of the resistance rod 6, so that the resistance in the traveling direction can be freely adjusted by a simple means. it can. That is, as shown in the figure, the auxiliary resistance member 7 is formed by sharply forming a thick and wide plate-like piece in a boat shape in a plan view, and a mounting screw 61 is provided at the center thereof.
And the mounting screw 61 is fastened to the screw hole 62 formed at the lower end of the resistance rod 6 so as to be attached as shown by the dotted line in FIG.

Therefore, the auxiliary resistance member 7 is provided below the resistance rod 6.
According to the dashing prevention structure 5 which is detachably provided, since the auxiliary resistance member 7 overhangs on both sides of the lower end of the resistance rod 6 within a predetermined depth of the uncultivated ground, the auxiliary resistance member 7 is projected into the uncultivated ground shallowly. Even in the state, the overhanging portion increases the advancing direction resistance in addition to the advancing direction resistance by the resistance rod 6, so that smooth tilling work can be performed without being hindered by hard debris under the ground, Cultivating claw 30 directly under the case 2c
It is possible to dig up the soil in the non-tillage area (remaining tillage land) where there is no soil, and it is possible to eliminate the occurrence of remaining tillage.

Incidentally, the auxiliary resistance member 7 is not limited to the shape shown in the drawing, and the desired progress can be obtained by bending the front end side in the vertical direction (FIG. 8) or the rear end side in the vertical direction (FIG. 9). Directional resistance can be freely obtained. Further, the attachment / detachment means of the auxiliary resistance member 7 with respect to the resistance rod 6 is not limited to the above-mentioned means, and may be any means.

[0018]

Since the present invention has the dashing prevention structure for the tilling machine constructed as described above, the following effects can be obtained. In a tilling machine equipped with a rotary type tiller on a traveling machine body, at the lower end of the tiller case portion that rotatably supports the rotary portion of the tiller, a subsidence prevention surface that advances in the ground with a front inclined surface is formed. Providing a mounting bracket, at the lower rear of the sinking prevention surface,
By attaching and fixing the resistance rod that rushes into the ground in a substantially vertical posture and makes it progress, the resistance rod can be
Since it imparts a certain amount of resistance in the direction of advance to the machine while it is plunging vertically into the uncultivated ground, it is possible to prevent dashing that accompanies the rotation of the tilling claws, and to prevent shallow tillage by means of the resistance in the direction of advance to prevent it from reaching a predetermined depth You can cultivate.
Further, at this time, the mounting bracket imparts resistance in the traveling direction by means of the subsidence prevention surface, and prevents the subsidence of the tilling case portion due to the resistance of the resistance rod, so that the tilling work of a predetermined depth can be performed smoothly.

Since the auxiliary resistance member is detachably provided on the lower portion of the resistance rod, the auxiliary resistance member increases the resistance in the advancing direction within the predetermined depth of the uncultivated ground together with the resistance in the advancing direction of the resistance rod. In addition, different auxiliary resistance members are provided below the resistance rod, and the advancing direction resistance adapted to the conditions such as hardness and softness of each field can be easily adjusted.

[Brief description of drawings]

FIG. 1 is a side view of a tilling implement equipped with a dashing prevention structure according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side view of the cultivating part shown in FIG.

FIG. 4 is a front cross-sectional view showing the configuration of a main part of the tillage part of FIG.

FIG. 5 is a side view of the dashing prevention structure.

6 is a rear view of FIG.

FIG. 7 is a perspective view showing another embodiment of a dashing prevention structure.

FIG. 8 is a side sectional view showing another embodiment of the dashing prevention structure.

FIG. 9 is a side sectional view showing another embodiment of the dashing prevention structure.

[Explanation of symbols]

1 management work machine 1a traveling airframe 2 transmission case 2c Tillage case part 3 tillage department 3a Rotary section 5 Dashing prevention structure 6 resistance rod 7 Auxiliary resistance member 50 mounting bracket 52 Settling prevention surface

Claims (2)

[Claims] 1. A cultivating work machine having a traveling machine body (1a) provided with a rotary type cultivating part (3), wherein a cultivating case part (2c) rotatably supporting the rotary part (3a) of the cultivating part (3). ) Is provided with a mounting bracket (50) on the lower end of which a subsidence prevention surface (52) for advancing through the ground with a front inclined surface is provided, and at the rear lower part of the subsidence prevention surface (52),
A dashing prevention structure for a tillage implement that removably attaches and fixes a resistance rod (6) that thrusts into the ground in a substantially vertical posture and advances. 2. The dashing prevention structure for a tiller according to claim 1, wherein an auxiliary resistance member (7) is detachably provided at a lower portion of the resistance rod (6).