JP2547564B2 - Float in paddy work machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a float in a paddy working machine such as a rice transplanter, a transplanter, a seeder, and a fertilizer applicator.

[Problems to be Solved by Prior Art and Invention] Generally, in this type of paddy working machine, a float such as a rolling float is provided to detect a rolling state of the machine body. These floats are generally formed by mold molding such as blow molding. Conventionally, when this mold molding is performed, the mold shape is divided into upper and lower horizontal parts according to the ground contact direction of the float. It was a structure.

For this reason, it is difficult to form a rib for mounting the float on the upper surface of the float or to open a through hole for supporting the float in the horizontal direction. Since the pivot part and the mounting part were formed by providing the large number of parts, the mounting member becomes large and the assembly performance is poor, and the float weight becomes heavy and the float performance deteriorates. In addition, the ribs protruding laterally inevitably widen the float width, and a wide mounting space is required, which is a problem.

[Means for Solving the Problem] The present invention was devised with the object of providing a float for a paddy field working machine capable of eliminating these drawbacks in view of the above-mentioned circumstances. A float to be attached to a machine, wherein the float is molded using a left and right vertical split mold whose dividing surface passes through a rib for forming a mounting portion, and the float and the rib protruding upward in the float are formed. It is characterized by being integrally formed.

Further, according to the present invention, it is possible to form horizontal through holes in the float and to form ribs on the upper surface of the float by molding.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a traveling machine body of a walk-behind rice transplanter which is a paddy field working machine, and the traveling machine body 1 includes a traveling wheel 2, a seedling stand 3, a planting claw 4, a driving handle 5, a main float 6 and the like. All of the members are attached as in the conventional case.

7 is a rolling float formed according to the present invention, the float 7 being attached to both left and right sides of the body,
The front end side is pivotally supported by a support shaft 8 so as to be vertically swingable,
The rear end portion is connected to a hydraulic valve (not shown) for controlling the attitude of the machine body via a link 8a. When the traveling body 1 rolls in the left-right direction or is pitched in the front-rear direction, the float 7 swings up and down with the support shaft 8 as a fulcrum, whereby rolling or pitching detection is performed, and the ground of the traveling body is grounded. The posture is kept almost constant.

The float 7 is long in the front-rear direction, a through hole 7a through which the support shaft 8 penetrates is formed in the front end portion, and a rib 7b is formed on the rear upper surface. Through hole like this
The float 7 having the ribs 7a and the ribs 7b is formed by a blow molding method as follows. The die 9 used in that case is set so that its divided surface is divided into left and right parts with respect to the ground contact surface of the float 7 and passes through the rib 7b portion arranged above the float.

In the embodiment of the present invention configured as described above, the mold 9 for molding the rolling float 7 has a left-right vertical split structure such that its dividing surface passes through the rib 7b arranged at the top. The rib 7b can be integrally formed on the upper part of the float so as to project upward. Moreover, the through hole 7a oriented in the horizontal direction can be easily formed by preliminarily incorporating the cored bar 7c into the mold, if necessary.

Therefore, the mounting member necessary for inserting the horizontally oriented support shaft 8 and the mounting member provided on the rib 7b can be simplified,
In some cases, these mounting members can be eliminated, and the assembling property can be improved, the weight of the float 7 can be reduced, and the float performance can be improved. Also rib
Since 7b is formed on the upper surface of the float, the left and right width of the float 7 can be made narrower than that of the conventional one which is projected laterally,
As a result, the installation space for the float 7 can be reduced, which contributes to the compactness of the machine body.

For the rib, the dividing surface may pass through one side surface of the rib, or it may pass through the middle of the rib thickness, and the through hole may not be provided. Is also good.

[Effects] In short, since the present invention is configured as described above, the mold is a float, but the mold therefor is divided into left and right parts so that the dividing surfaces pass through the ribs. Therefore, if there is a rib protruding upward, it is formed as it is as an integrally-molded rib.

As a result, it is possible to integrally form the rib on the upper part of the float without projecting the rib from the side surface of the float or separately attaching the rib as in the case of adopting the conventional horizontal and vertical molds. This is not allowed, and even the through-holes that are oriented in the horizontal direction for attaching the float to the machine body can be easily formed by preliminarily incorporating the core metal into the mold, if necessary.

Moreover, the mounting members necessary for inserting the horizontally oriented support shaft and the mounting members provided on the ribs can be simplified, and in some cases, these mounting members can be dispensed with. Along with the improvement of the property, the weight of the float can be reduced and the float performance can be improved. Also, because the ribs are formed on the upper surface of the float, the left and right width of the float can be made narrower than that of the conventional one that protrudes to the side, which makes it possible to reduce the installation space for the float and make the aircraft compact. Can also contribute.

In addition, since there is no mold dividing surface on the side surface, which tends to be a rough surface, it can also contribute to the prevention of disturbance of the field mud soil due to the float.

[Brief description of drawings]

The drawings show an embodiment of a float in a paddy field working machine according to the present invention, wherein FIG. 1 is an overall side view of a walk-behind rice transplanter, and FIGS. 2A and 2B are plan views of a rolling float.
Side view, Fig. 3 X, Y, Z are rolling floats X-X, Y-
It is a Y, Z-Z sectional view. In the figure, 7 is a rolling float, 7a is a through hole, 7b is a rib, and 9 is a mold.

Claims (1)

(57) [Claims] 1. A float to be attached to a paddy working machine, wherein the float is molded using a left and right vertical mold whose dividing surface passes through a rib for forming a mounting portion, and the float and the float are directed upward. A float for a paddy working machine, which is integrally formed with a rib projecting toward it.