JPH076735Y2 - Arrangement structure of left and right transmission shaft cases and reinforcement frame of walk-behind rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an arrangement structure of left and right transmission shaft cases and a reinforcement frame of a walk-behind rice transplanter.

(B) Conventional technology Conventionally, a walk-behind rice transplanter, as disclosed in Japanese Utility Model Laid-Open No. 60-33824, powers a planted mission case from a mission section at the rear of a prime mover via a transmission shaft. The power is transmitted to the rotation mechanism of the planting claws via the transmission shaft that extends laterally from the mission case with the same planting to rotate the required number of planting claws corresponding to the number of planting claws. Configured to do so.

(C) Problems to be solved by the invention Therefore, since the weight of the planted mission case part having the transmission shaft cases that extend to the left and right is biased, and there are transmission shaft cases that extend to the left and right of the planted mission case. In addition, a space for interposing the transmission shaft case is required between the axle and the seedling mounting table, and the seedling mounting table is located rearward by that much, and the weight balance of the machine body shifts to the rear part. Therefore, when the seedling mat is placed on the seedling mounting table and the planting traveling is performed, it has a drawback that it is difficult to balance the machine body.

(D) Means for solving the problems In the present invention, therefore, two rows of seedling planting mechanisms are arranged inside the pair of left and right wheels attached to the machine body, and another row of seedling planting mechanisms are arranged outside. The seedling planting mechanism on the outside of the wheel is configured to transmit power from the left and right transmission shaft cases that are taken out from the lateral side of the mission part in a protruding manner. The U-shaped reinforcing machine frame is erected in a projecting manner upward and rearward so that the reinforcing machine frame and the left and right transmission shaft cases are substantially V-shaped in a side view. Seedling table support bodies (31) (32) (33) are projectingly provided on the center part and the left and right side parts of the rear machine frame (28b), and the same seedling table support (31) (32) (33). ) Provides a structure for arranging the left and right transmission shaft cases and the reinforcing machine frame of a walk-behind rice transplanter in which the seedling mounting table (10) is supported.

(E) Action / Effect In the present invention, the seedling planting mechanism for two rows is placed inside the pair of wheels, and the seedling planting section for other rows is placed outside, and the mission unit is installed on the outside seedling planting mechanism. Since it is configured to transmit power from the left and right transmission shaft cases that are taken out from the lateral outer side to the overhanging strip, each seedling planting mechanism between the inside and outside of the pair of wheels is arranged independently, Since there is no need for a transmission mechanism between them, the weight of the planting mission part is reduced, and since there is no transmission case between the seedling planting mechanisms on the inside and outside of the wheels, the seedling stand and wheels can be installed. It can be placed as close to each other as possible, making the entire machine compact, and the left and right transmission shaft cases that transmit power to the seedling planting mechanism outside the wheels overhang from the lateral side of the mission section for planting seedlings. Since it is extended to the area, Scan acts as a pre-load in the wheel forward, has the effect of such a good overall weight balance of the body.

Moreover, since the left and right transmission shaft cases and the reinforcing machine frame are substantially V-shaped in a side view, when the side float is attached to the machine body, the swing center part of the side float is By positioning the shaft case and the reinforcing machine frame in the vicinity of the substantially V-shaped bent portion, the transmission shaft case and the reinforcing machine frame do not hinder the swing of the side float, and the side float shakes. It is possible to secure a sufficient dynamic space.

Furthermore, even if the swing center part of the side float is brought close to the bent part formed by the transmission shaft case and the reinforcement frame, it does not hinder the swing of the side float.
There is no need to form a large recess in the swing center of the side float as in the past, and a side float that can obtain sufficient buoyancy can be used, and stable planting travel becomes possible. .

Then, since the seedling placing table supports are provided at the center portion and the left and right side portions of the rear side machine frame of the reinforcing machine frame, and the seedling placing table is supported by the seedling placing table support, the seedling placing table is supported. The support of the table becomes strong, and the parallel accuracy of the virtual rotation axis line of the planting claw provided in the seedling planting mechanism and the seedling take-out position line of the seedling table, in other words, the planting claw and the seedling harvesting The accuracy of the mutual interval with the outlet is increased, and the seedling removal amount can be quantified.

(F) Example To explain the example of the present invention in detail with reference to the drawings, FIG. 1 is a side view showing a traveling type rice transplanter (A) of a four-row plant, and FIG.
The figure shows the same plan view.

The engine part (2) is mounted on the front part of the machine body (1), and the mission part (3) is provided behind it, and the shaft case (4) is provided directly behind the mission part (3). In addition, from the left and right sides of the same mission (3), a separate L
The left and right transmission shaft cases (5) and (5 ') having a character shape are extended.

The rear end of the shaft case (4) is continuously provided with a planted mission case (6), and the planted mission case (6) is provided with a proximal end of a planted frame (7). The planting frame (7) is extended and formed rearward and upward, a handle (8) is attached to the upper end, and four seedling mats for four rows can be placed midway through the seedling placement table support frame (9). Front and rear high seedling mounts (10) are installed in a row.

Among the four-row seedling planting mechanism, the inner two-row seedling planting mechanism (11) (11 ') is connected to the planting mission case (6).

Furthermore, the left and right transmission shaft cases (5) and (5 '), which are connected to the left and right lateral sides of the mission section (3), are
Left and right horizontal overhanging cases (12) (12 ') protruding horizontally from the left and right, and each horizontal overhanging case (12) (12')
Left and right longitudinal cases (13) that are connected to the rear outer direction from the tip of the
Consisting of (13 ') and left and right longitudinal case (13)
At the rear end of (13 '), the left and right planted gear cases (14) (1
4 ') are connected in series, and in the gear case (14) (14'), the outermost left and right outer row seedling mechanisms (15) (15 ') of the outermost two rows of the four row seedling mechanisms are connected in series. ing.

Moreover, the left and right longitudinal cases (13) and (13 ') of the left and right transmission shaft cases (5) and (5') are formed into an eight shape in a plan view, and are inclined in a front view, a rear view, and a low view in a side view, and are the same. It is located on a plane.

Therefore, even if the machine body (1) rolls largely during the work, there is no fear that the left and right transmission shaft cases (5) and (5 ') will come into contact with the field scene and be damaged.
It is possible to prevent one of the left and right transmission shaft cases (5) and (5 ') that are inclined when the machine body (1) is swung, etc. from entering the field scene, and moreover, the left and right transmission shaft cases (5) and (5'). It is possible to secure a large vertical swing space for the side floats (18) and (18 ') arranged below.

The left and right transmission shaft cases (5) and (5 ') may be configured such that the base end portions of the left and right horizontal overhanging cases (12) and (12') can be detachably attached to the mission section (3).

(16) and (16 ') are swing cases linked to the left and right of the mission section (3), and (17) and (17') are left and right wheels linked to the swing cases (16) and (16 '). Yes,
(19) indicates a center float.

Moreover, the inner two-row seedling planting mechanism (11) (11 ') in the four-row seedling planting mechanism is provided inside the pair of left and right wheels (17) (17), and also outside. The two left and right outer seedling planting mechanisms (15) (15 ') are located outside the wheels (17) (17'). Therefore, the seedling planting mechanism (11) is
Planting claws (20) (20 ') in (11') and planting claws (21) (21 ') in the lateral left and right seedling planting mechanisms (15) (15').
Are different from each other in the power transmission path from the mission section (3).

By such left and right transmission shaft cases (5) (5 '),
Planting claws (21) located outside the left and right wheels (17) (17 ')
Fig. 3 schematically shows a walk type rice transplanter with four-row planting, which is configured to transmit power to (21 ').

In the case of a six-row planting walk-type rice transplanter, as shown in Fig. 4, the left and right transmission shaft cases (5) and (5 ') extended from the lateral side of the mission section (3) are attached to the left and right wheels ( 1
7) Located on the outer side of (17 '), the left and right transmission shaft cases (5), (5') have left and right planted gear cases (14) (1)
4 ') are equipped with two rows of planting nails.

That is, inside the planted gear case (14) (14 '),
Planting nails (21) (21 ') with the same structure as the Shijo rice transplanter
Is mounted, and the interlocking cases (22) (22 ') are located outside the gear cases (14) (14') to provide seedling planting mechanisms (22-1) (22'-1), The outermost planting claws (23) (23 ') are attached to this mechanism to form a six-row planting rice transplanter.

The change from the four-row plant to the six-row plant may be performed by replacing the left and right transmission shaft cases (5) and (5 ') which are detachably configured.

According to the detachable left and right transmission shaft cases (5) and (5 '), the number of planting threads can be selected according to the working conditions, and
Even when the machine is transported, the left and right transmission shaft cases (5) (5 ')
By removing it, the machine can be made compact and can be transported in large quantities, and it can be conveniently stored in a small barn or the like.

In the figure, (24) is an output shaft of the prime mover (2), (25) is a pulley, (26) is a belt, and (27) is a transmission gear case.

In such a structure, the gist of the present invention is, as shown in FIGS. 1 to 4, between the left and right planted gear cases (14) and (14 '), a reinforcing machine frame (28) having a substantially U shape in a plan view. The reinforcement machine frame (28) will be described in detail below.

That is, the reinforcement machine frame (28) has left and right machine frames (28a) (28 ') whose front ends are attached to the left and right planted gear cases (14) (14').
a) and the left and right machine frames (28a), (28'a) between the rear ends of the machine frame, and the central part is the bent part (7) of the planting frame (7).
It consists of the rear machine frame (28b) connected to a).

A frame having a substantially trapezoidal shape in plan view is formed by the reinforcing machine frame (28) and the left and right transmission shaft cases (5) and (5 '), and each structure is formed in the substantially trapezoidal frame. Is provided, and each structure is guarded by the same frame.

Moreover, the left and right machine frames (28a) (28 ') of the reinforcement machine frame (28)
a) and the left and right transmission shaft cases (5) and (5 ') are substantially V-shaped in a side view, and the left and right planted gear cases (14) and (14') are bent into a substantially V-shaped shape. It is located in the department.

Then, as shown in FIG. 1, the swing center portions of the side floats (18) and (18 ') are located near the lower parts of the left and right planted gear cases (14) and (14'), and the side floats (18) and (18 ') are positioned. (18) The front end of (18 ') is vertically swingably connected to the left and right transmission shaft cases (5) and (5') by connecting bodies (29) and (29), and the side floats (18) and (18) are also provided. ′)
The rear part is attached to the reinforcement frame (28) and the vertical position adjustment device (30).
By (30), the vertical position is adjustable and the vertical swing is possible.

Therefore, according to such a configuration, the side float (18)
Even when the (18 ') swings greatly up and down, the left and right machine frames (28a) (28'a) and the left and right transmission shaft cases (5) (5')
Side float (18) (1
8 ') can secure a sufficient swing space, and the left and right planted gear cases (1) are arranged near the upper part of the swing center where the vertical position of the side floats (18) (18') is small.
4) Since the seedling planting mechanism (15) (15 ') is attached to (14'), the planting depth by (15) (15 ') can be secured.

Moreover, as shown in FIG. 3, by the reinforcing machine frame (28), the lateral width (X) from the planting frame (7) to the left and right machine frames (28a) (28'a) located on the left and right sides of the frame (7). )When,
From the left and right planted gear cases (14) (14 ') to the rear machine frame (28
The planting mission case (6) connected to the base end of the planting frame (7) and the left and right sides of the planting mission case (6) to secure the dimension up to the front-back width (Y) The accuracy of the mutual spacing with the left and right planted gear cases (14) (14 ') connected to the front ends of the machine casings (28a) (28'a) is improved, and the mutual rigidity is also improved, and the planting depth is improved. The planting accuracy such as pod spacing is improved.

Furthermore, as shown in FIG. 3, seedling platform supports (31) (32) (33) are provided at the center of the rear machine frame (28b) of the reinforcement machine frame (28) and on the left and right sides. Protruding the same support (31) (32)
The seedling mount (10) is supported by (33).

Therefore, according to such a structure, the support of the seedling placing table (10) is strengthened, and the planting claws (20) (20 ') (21) (21') are provided.
Accuracy of the virtual rotation axis core line (P) of the above and the seedling take-out position line (Q) of the seedling stand (10), in other words, the planting claw (20)
The accuracy of the mutual spacing between (20 ') (21) (21') and the seedling take-out port is improved, so that the amount of seedling taken can be quantified.

Also, in the left and right planted gear cases (14) (14 '), the first
As shown in the figure, each clutch device (34) (34) is provided so that the clutch device (34) (34) can be manually operated by the clutch lever (35) provided on the handle (8). ing.

Therefore, according to such a configuration, the clutch device (34) (3
Compared to the case where 4) is installed on the mission section (3) side,
Since it can be brought close to the handlebar (8), the operating system interposed between the clutch device (34) (34) and the clutch lever (35) can be made short and lightweight.

[Brief description of drawings]

FIG. 1 is an overall side view of the walk-type rice transplanter for four-row planting of the present invention. FIG. 2 is a plan view of the same. 3 and 4 are plan views of relevant parts. (1): Airframe (2): Motor part (3): Mission part (4): Shaft case (5) (5 '): Left and right transmission shaft case (6): Planted mission case (7): Planted frame (8): Handle (9): Seedling table support frame (10): Seedling table (11) (11 '): Seedling planting mechanism (12) (12'): Left and right horizontal overhanging case (13) (13 ') ): Left and right longitudinal case (14) (14 '): Left and right planting gear case (15) (15'): Outer left and right seedling planting mechanism (17) (17 '): Left and right wheels (18) (18'): Side float (19): Center float (20) (20 '): Planted claw (21) (21'): Planted claw (22) (22 '): Interlocking case (23) (23'): Outermost planted nail

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideki Matsuoka 1-32, Chaya-cho, Kita-ku, Osaka-shi, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (72) Toshiji Matsuda 1-chaya-cho, Kita-ku, Osaka-shi, Osaka No. 32 Yanmar Agricultural Machinery Co., Ltd. Judgment Panel, Chief Judge Takao Ishikawa Judge Judge Fumio Fuji Judge Toshiko Otaka (56) Reference JP-A-57-94209 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. A pair of left and right wheels (1) attached to a body (1).
7) Two rows of seedling planting mechanism inside (17 ') (11) (11')
, And the seedling planting mechanisms (15) (15 ') for other rows are arranged on the outside, respectively, and the seedling planting mechanism (15) outside the wheels (17) (17') is arranged.
The left and right transmission shaft cases (5) are configured to transmit power to the left and right transmission shaft cases (5 ') (5'), which are taken out from the lateral side of the mission section (3) in a protruding manner.
Between the tips of (5 '), a reinforcing machine frame (2
8) is erected in a projecting manner upward and rearward so that the reinforcement machine frame (28) and the left and right transmission shaft cases (5) and (5 ') are substantially V-shaped in a side view. Seedling table supports (31) (32) (33) are provided at the center and the left and right sides of the rear machine frame (28b) of the frame (28) to project the seedling table supports (3).
1) A structure in which the left and right transmission shaft cases and the reinforcement frame of a walk-type rice transplanter in which the seedling stand (10) is supported by (32) and (33) are arranged.