JPH05153813A - Machine body structure of walking rice transplanter - Google Patents

Abstract

PURPOSE:To reduce the weight of a machine body structure of a walking rice transplanter and provide the structure excellent in assembling accuracy of a planting part. CONSTITUTION:A transmission case (2) and a planting case 3 arranged in the front and rear of a machine body are integrated and connected with plural pipes (4), (32) and (32) to construct the machine body. A planting transmission shaft (33) is simultaneously inserted into the pipe (4) which is one of the pipes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a body structure of a walking rice transplanter for picking up one seedling of seedling from a seedling mounting table which is reciprocating left and right by a planting claw and sequentially planting it in a field.

[0002]

2. Description of the Related Art A planting case made of cast aluminum, a frame connecting the planting case and the transmission case, a steering handle and the like are usually formed separately, and are integrally connected by flange connection. Let me configure the airframe.

[0003]

However, in the case of such flange coupling, not only the mounting accuracy such as parallelism is difficult to be obtained, but also the weight of each flange portion is increased to secure the strength. ..

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a transmission case and a planting case arranged in front of and behind the machine body are integrally connected by a plurality of pipes to form the machine body, and at the same time, one of the pipes is formed. Insert the attached transmission shaft,
The body structure from the transmission case to the handle base is integrally connected by welding etc. to improve the mounting accuracy and weight reduction of the planting claws and seedling mounting table, and also to improve the safety protection and durability of the planting transmission shaft. It makes it possible.

[0005]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a side view of a main part, FIG. 2 is an overall side view of a walking rice transplanter, FIG. 3 is a plan view of the same, and FIG. 4 is a plan view of a body frame part. In the figure, (1) is an engine, ( 2) is a transmission case, (3) is a planting case that is connected to the rear part of the mission case (2) through a transmission pipe (4), and (5) is a handle frame (6) in the planting case (3). (7) and (7) are a pair of left and right paddy wheels that are vertically supported by left and right swing cases (8) and (8) on the left and right sides of the mission case (2), respectively. ) Is a front low rear high seedling table which is reciprocally slidably attached to the upper side of the handle frame (6) via guide rails (10) and (11), and (12) is the planting case (3) 1 plant from the seedling stand (9) attached to the plant via the planting arm (13) (14) has a fertilizer tank (14a), a fertilizer feeding case (15), a grooving device (16), etc. of the planting claw (12). A lateral strip fertilizer applicator for fertilizing along the inner side of the seedling planting position, (17) is the engine base (1) of the engine (1)
8) and a single float with a planting flat surface supported by a front link (19) and a planting depth adjusting lever (20) below the handle frame (6), and (21) is the engine (1) and the hood that covers the upper side of the engine fuel tank (22), and (23) is the engine base (1
8) A bumper fixed at the front end, (24) a main shift lever, (25) a recoil lever, (26) a left and right side clutch lever, (27) a planted clutch lever, and (2)
8) is a hydraulic lifting lever, (29) is a main clutch lever,
(30) is a lever for adjusting the amount of seedlings.

The transmission pipe (4) is arranged in the front-rear direction at the center of the machine body, the front end flange portion (4a) is detachably attached and fixed to the rear end of the mission case (2), and the rear end is formed of sheet metal. The T-shaped planted case (3) is fixed to the shaft insertion opening (3a) by welding, and the front end of the handle frame (6) is welded and fixed to the rear side surface of the planted case (3). 4), the planting case (3), and the handle frame (6) are welded as an integrated structure, and the planting claw (1)
2) and the seedling stand (9) are configured to improve the mounting accuracy.

Further, two left and right pipes (32) (32) having a relatively small diameter, the front end side of which is fixed to the upper end of the fixed bracket (31) on the rear side of the transmission case (2), are connected to the transmission pipe (4). The transmission case (2) is extended to the base end portion of the handle frame (6) in a rearward downward direction from above, and welded and fixed to both left and right sides of the frame (6).
The pipes (4) (32) (32) are integrally connected in a state where a side view triangle is formed between the handlebar frame (6) and the handle frame (6), and these three pipes (4) (32) (32) are lightweight. The airframe has excellent bending and torsional rigidity.

As shown in FIG. 5, the planted transmission shaft (33), which is the PTO shaft of the mission case (2), is inserted into the transmission pipe (4), and the planted shaft (33) is used to insert the planted transmission shaft. The planting arm (13) that is supported on both the left and right sides of the planting case (3) is driven. The planting arm (13)
The transmission pipe (4) on the front side and the left and right pipes (3) on the upper side
2) and (32) via the front pivot plate (34), and behind the pivot plate (34) the transmission pipe (4) and the left pipe (3).
2) are integrally connected to each other via a rear pivoting plate (35), and the left and right pipes (32) (32) themselves are directly fixed to the handle frame (6) at the rear side of the planting arm (13). , The pipes (4) (32) (32), the frame (6), and the pivot plate (3) before and after the side view planting arm (13).
4) By forming the closed space by (35),
Displacement prevention of the arm drive shaft (13a) mounting portion of the planting arm (13) (the shaft (13a) mounting portion is displaced with respect to the seedling table (9) due to an unbalanced load due to the crank motion of the planting arm (13). It is configured so that the seedling collection amount is stabilized with the aim of preventing

As shown in FIGS. 6 to 7, the front and rear horizontal plates (36) provided laterally between the rear end portions of the left and right pipes (32) (32).
a) (36b) on the left and right gate-shaped frames (37) (3
The lateral feed chain case (38) is integrally connected through the drive case (7), and the drive sprocket (3) is inserted into the chain case (38).
9) and the horizontal sprocket (40) (40), the lateral feed chain (41) is stretched, and the lateral feed body (42) attached to the chain (41) is projected on the front side of the seedling table (9). The driving sprocket (39) has a sprocket shaft (44) extending downward, and a lower end floating sprocket (45) of the sprocket shaft (44) and the bracket (31). ) Is attached to the fixing metal fitting (46) of (1) via a tension adjusting plate (47) and a floating sprocket (48) is provided between the side feed transmission chain (4).
9) is stretched, and the planted transmission shaft (3) is mounted between the transmission case (2) on the left side of the transmission pipe (4) and the rear pivot plate (35).
3) A transverse feed screw shaft (50) parallel to the screw shaft (50) is provided, and a slider (51) to be coupled to the screw shaft (50) is integrally connected to the transmission chain (49) to remove the screw from the mission case (2). At the output, the screw shaft (50) rotates and the slider (5
1) When the chain reciprocates back and forth, each chain (49) (4
1) The lateral feed body (42) is reciprocally moved to the left and right to laterally feed the seedling mounting table (9), and the eccentric shaft (50a) at the rear end of the screw shaft (50). The vertical feed cam (53) to the vertical feed foil (52) of the seedling stand (9).
It is configured so that seedlings can be fed vertically by interlocking with each other. As shown in FIG. 8, the transmission chain (49) for driving the seedling mounting table (9) in the space (A) surrounded by the transmission pipe (4) and the left and right pipes (32) and (32) in cross section. A screw shaft (50) is provided to protect these items. Note that (54)
Is a fertilizer applicator (1) fixed to the pipes (32) (32)
4) A mounting plate for mounting, and (55) is a bracket that supports the swing link of the planting claw (12).

This embodiment is constructed as described above, and the transmission pipe (4) and the planting case (3) from the rear side of the mission case (2) to the base of the handle (5).
-Since the handle frame (6) is a main frame with a welded integrated structure, the position of the planting claw (12) and the seedling intake of the seedling placing table (9) will change depending on the assembly if the accuracy of each of these parts is secured. Inconveniences such as the above are eliminated, and the assembly accuracy can be improved stably. In addition, the main frame has a welded integral structure without the flange coupling portion, and the left and right pipes (32) (32) having a relatively small diameter and the transmission pipe (4) serving as the main frame have a triangular structure in a side view. Therefore, it is possible to reduce the weight of the machine body and to make it strong in bending and torsional rigidity.

Further, by inserting the planting transmission shaft (33) for driving the planting claw (12) into the transmission pipe (4), the safety protection of the transmission shaft (33) can be achieved. By disposing the transmission chain (49) and the screw shaft (50) for driving the seedling mounting table (9) in the space (A) surrounded by the pipes (4) (32) (32) The safety protection of the planting drive system of the transmission chain (49) and the screw shaft (50) can be achieved.

[0012]

As is apparent from the above embodiments, according to the present invention, the transmission case (2) and the planting case (3) arranged at the front and rear of the machine body are provided with a plurality of pipes (4) (3).
2) (32) is integrally connected to form an airframe,
Since the planting transmission shaft (33) is inserted into one of the pipes (4), the planting claw (12) and the seedling table (9) can be attached with high precision and the weight of the machine can be reduced. In addition to the above, the planted transmission shaft (33) can be protected safely in the transmission pipe (4) and the durability of the shaft (33) can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a body portion.

FIG. 2 is an overall side view of a rice transplanter.

FIG. 3 is an overall plan view of a rice transplanter.

FIG. 4 is an explanatory plan view of a body portion.

FIG. 5 is a cross-sectional explanatory view of a mission case portion.

FIG. 6 is a side view of a lateral feed drive section.

FIG. 7 is a plan view of a lateral feed drive unit.

FIG. 8 is a rear view for explaining the lateral feed drive unit.

[Explanation of symbols]

 (2) Mission case (3) Planted case (4) Pipe (transmission pipe) (32) Pipe (33) Planted transmission shaft

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideki Matsuoka 1-32 Chayamachi, Kita-ku, Osaka Yanmar Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. A vehicle body is constructed by integrally connecting a transmission case and a planting case, which are arranged in front of and behind the vehicle body, with a plurality of pipes, and a planted transmission shaft is inserted into one of the pipes. The airframe structure of the walking rice transplanter.