JPH1084704A - Walk-type tilling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a point that work is not easily executed the lower end of a rear cover is positioned in a part lower than a tail wheel to be extended backwards and to be trailed when work is executed by raising the tail wheel at the time of tilling. SOLUTION: In a walk-type tilling machine where a rotary tilling device is arranged in the rear part of a running wheel, a tail wheel height adjusting device 6 is arranged in the rear part of the rotary tilling device, the upper and the lower positions of the tail wheel 3 is made to be adjustment possible, the rear cover 23 is arranged in the rear part of the tail wheel, the lower part of the tail wheel height adjusting device is connected to the intermediate part of the rear cover by a cover support 24, a removal rod 31 is provided between theh both side surfaces of tilling mission case A and a tillage tine 8 close to the tilling mission case set on a tillage tine shaft and the removal rod is made to be rotation possible in forward and backward directions by the operation of a worker.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary tilling device to be mounted on a rear part of a walking cultivator.

[0002]

2. Description of the Related Art Conventionally, in a rotary tilling device mounted on a rear part of a walking type cultivator, an upper part and a side of the rotary are covered with a cultivating cover, and a rear side is covered with a rear cover to prevent scattering of soil. . On the other hand, a tail wheel is mounted on the rear part of the rotary tilling device in order to adjust the tilling depth and raise the tilling claw above the ground surface during traveling. And
The tail wheel was raised and fixed during the tilling work.

[0003]

In such a tilling operation, the tail wheel 3 is raised as shown in FIG. 5, so that the lower end of the rear cover 23 'is located below the tail wheel 3. For this reason, the rear cover is extended and dragged, and the operator may step on the rear cover, which makes the work difficult. Therefore, conventionally, a two-dot chain line 2
Although it is bent upward and locked as in 3 ", the relatively shallow tilling may cause the soil to scatter behind, and forgot to remove it after work.

[0004]

The present invention uses the following means in order to solve the above problems. That is, in a walking type cultivator in which a rotary tilling device is arranged behind a traveling wheel, a tail wheel height adjusting device is arranged at a rear portion of the rotary cultivating device to make it possible to adjust the vertical position of the tail wheel, A rear cover is disposed at a rear portion, and a lower portion of the tail wheel height adjusting device and a middle portion of the rear cover are connected by a cover support.

In addition, a removing rod is arranged between both side surfaces of the tilling mission case and a tilling claw which is planted on the tilling claw shaft and is close to the tilling mission case. It is made movable.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The problems and means to be solved by the present invention are as described above. Next, an embodiment of the present invention shown in the attached drawings will be described. FIG. 1 is a side view of a cultivator employing the present invention, FIG. 2 is a side view of a tilling part with a tail wheel raised, FIG. 3 is a front view of a rotary portion, and FIG. 4 is a plan view of a rear cover and a cover support. is there.

A cultivator equipped with a rotary tilling apparatus according to the present invention will be described with reference to FIG. The engine frame F protrudes forward from the traveling transmission case M,
An engine E is mounted and fixed on the engine frame F. V is set between a pulley provided on the output shaft of the engine E and a pulley 20 of the input shaft 21 of the traveling transmission case M.
The belt 14 is wound. The V-belt 14 is tensioned and relaxed by a tension pulley to constitute a belt tension type main clutch mechanism 16 for disconnecting and connecting power. An axle 26 projects left and right from the central traveling transmission case M, and the left and right traveling wheels 13 are fixed to the axle 26.

A belt cover 15 for covering the V-belt 14 and the main clutch mechanism 16 is provided, and the operation handle 1 protrudes rearward from an upper portion of the decorative cover 19 on the side of the belt cover 15. The operation handle 1 is composed of two left and right handles, and a main transmission lever 10 and a tilling transmission lever 11 are protruded between the left and right handles. Main clutch lever 1 at rear end of left operating handle 1
8, a finger clutch lever 4 is disposed, and a safety lever 2 for preventing the handlebars from being caught between the left and right operation handles 1 is disposed.
It is reinforced by. Further, a partial reverse rotary tilling device R is disposed below the operation handle 1.

The partial reverse rotary tilling device R comprises a tilling mission case A, a forward tilling claw 7, a reverse tilling claw 8, a tail wheel 3, a tail wheel height adjusting device 6, a tilling cover 9, and the like. . The tilling mission case A is integrally fixed so as to close the rear opening of the transmission case M. The tilling mission case A constitutes a center drive type partially reversing rotary tilling device R, and the left and right closest portions (inside) of the central tilling mission case A.
A total of four inverted tillage claws 8 are arranged, two on each side.

Since this rotary tilling apparatus is of a center drive type, the rotary tilling apparatus is of a cross center type so that the soil under the tilling transmission case A can be tilled. As shown in FIG. The outside of the cultivating claw shaft 5 is lowered. In other words, the left and right inverted tillage claws 8 are arranged in an inclined manner so as to form an inverted “C” shape in rear view, and are rotated. When tilling with this configuration,
The rotation of the reverse tilling claw 8 made it easier for straw, soil, and the like to accumulate at the front of the cross portion of the tilling mission case A.

Therefore, as shown in FIGS. 2 and 3, a support stay 29 is fixed to the front upper portion of the tilling transmission case A, and a pivot 30 is rotatably mounted on the support stay 29 so as to be rotatable. The removal rods 31 project downward on both sides of the pivot shaft 30, and return springs 32 are fitted on the pivot shaft 30. One end of the return springs 32 is attached to the support stay 29. The other is engaged with the removal rods 31, and the removal rods 31 are urged to rotate backward at a position between the side surface of the tilling transmission case A and the reverse tilling claw 8. doing. However, the removal rods 31 and 31 are located above the till cover 9.
And can be positioned at a position that does not hinder the rotation of the reverse tilling claw 8. An arm 33 is fixed to one end of the pivot shaft 30, one end of a wire 34 is fixed to the arm 33, and the other end of the wire 34 extends to the vicinity of the handle 1 as shown in FIG. And is connected to the removal lever 35.

With such a configuration, when the tilling condition is deteriorated, that is, when the straw or the soil is accumulated in the reverse tilling claw 8 and the front portion of the tilling mission case A, the operator can remove the removal lever 35. Is turned to pull the wire 34, and the removal rods 31. 3 are moved through the arm 33 and the pivot 30.
1 is rotated forward, and the straw or soil accumulated at the front of the tilling mission case A is scraped forward and discharged. When the grip 35 is released, the removing rod 3 is returned by the return springs 32.
1.31 rotates to the original position. This operation can be performed arbitrarily, and by pulling the removal lever 35 at appropriate intervals, it is possible to prevent the accumulation of straw or soil.

The tilling cover 9 is fixed to a tilling transmission case A and a beam 22 protruding rearward from the upper rear surface of the tilling transmission case A. A rear cover 23 made of rubber or the like is provided at the rear end of the tilling cover 9. Is arranged.
A tail wheel height adjusting device 6 is arranged at the rear end of the beam 22. The tail wheel height adjusting device 6 is configured such that the support cylinder 6a is
2 and can be adjusted to any height by loosening the lock lever 27. A handle 6b is provided at the upper end of the support cylinder 6a, and a screw rod is housed in the support cylinder 6a. The tail wheel 3 is supported, and the screw rod is moved up and down by rotating the handle 6b so that the height of the tail wheel 3 can be finely adjusted.

A cover support 2 is provided at the lower end of the support cylinder 6a.
4 is attached. The cover support 24 is shown in FIG.
As shown in FIG. 4, a cylindrical fixing portion 24a fitted and fixed to the supporting tube 6a, a supporting rod 24b projecting rearward from the fixing portion 24a in a V-shape in plan view, and a supporting rod 24b It is composed of a mounting bar 24c fixed to the rear end in the left-right direction, and a holding bar 24d for holding and fixing the rear cover 23 to the mounting bar 24c. A vertically intermediate portion of the rear cover 23 is clamped and fixed between the mounting bar 24c and the clamping bar 24d. In the present embodiment, the support rods 24b are arranged in a V-shape. However, the support rods 24b may be in a T-shape, and the support configuration is not limited. In addition, the front and rear positions of the tail wheel 3 and the rear cover 23 may be reversed, but the configuration can be the same.

In such a configuration, the tail wheel 3 is lowered to prevent the tilling claws 7 and 8 from hitting the ground when the vehicle is running on the road, stored, or not working, and the rear cover 23 is also prevented from rubbing against the ground. The lower end of the rear cover 23 is slightly higher than the lower end of the tilling claw. Then, when performing the tilling work, as shown in FIG. 2, the tail wheel height adjusting device 6 is fixed to the highest position. At this time, the cover support 24 fixed to the support cylinder 6a is also lifted, and the rear cover 2
3 is also lifted from the middle part at the same time, the upper part of the rear cover 23 is bent and slackened, the lower part remains hanging down, and the positional relationship with the tail wheel 3 is the same as before the lifting. That is, the lower end of the rear cover 23 is located below the lower end of the tail wheel 3 as in the related art, and does not drag. Therefore, the lower end of the rear cover 23 does not hang down rearward, and the operator does not step on the rear cover 23 during the tilling operation.

[0016]

According to the present invention, the following effects can be obtained by the configuration described above. That is, as in claim 1, a tail wheel height adjusting device is disposed at a rear portion of the rotary tilling device so that the vertical position of the tail wheel can be adjusted, and a rear cover is disposed at a rear portion of the tail wheel, and the tail wheel height is adjusted. Since the lower part of the adjustment device and the middle part of the rear cover are connected by the cover support, when the tail wheel is lifted during tilling work, the rear cover is also lifted at the same time, and the lower end of the rear cover hangs down as it drags backward, and the worker walks. The height of the rear cover from the shallow till to the deep till relative to the lower end and the tail wheel is substantially constant, so that it is not necessary to fold the rear cover as in the past. There is no scattering.

According to a second aspect of the present invention, a removing rod is disposed between both side surfaces of the tilling mission case and a tilling claw which is planted on a tilling claw shaft and is close to the tilling mission case, and the removing rod is operated by an operator. , So that even if straw or soil accumulates at the front of the tilling mission case, it can be discharged simply by rotating the removal rod. Removal can improve tillage efficiency.

[Brief description of the drawings]

FIG. 1 is a side view of a cultivator employing the present invention.

FIG. 2 is a side view of a tilling part with a tail wheel raised.

FIG. 3 is a front view of a rotary portion.

FIG. 4 is a plan view of a rear cover and a cover support.

FIG. 5 is a side view of a conventional tilling unit with a tail wheel lifted.

[Explanation of symbols]

 A Tilling mission case R Rotary tillage device 3 Tail wheel 6 Tail wheel height adjustment device 7 Forward rotation tillage claw 8 Reverse rotation tillage claw 23 Rear cover 24 Cover support 31 Removal rod

Claims (2)

[Claims] 1. A walking cultivator having a rotary tilling device arranged behind a traveling wheel, wherein a tail wheel height adjusting device is arranged at a rear portion of the rotary tilling device so that a vertical position of the tail wheel can be adjusted. A walk-behind cultivator, wherein a rear cover is disposed at a rear portion of a tail wheel, and a lower portion of the tail wheel height adjusting device and a middle portion of the rear cover are connected by a cover support. 2. A walking type cultivator in which a rotary tilling device is arranged behind a traveling wheel, wherein a removing rod is provided between both side surfaces of a tilling transmission case and a tilling claw planted on a cultivating claw shaft near the tilling transmission case. Wherein the removing rod is rotatable in the front-rear direction by an operation of an operator.