JP2585487Y2 - Aircraft restoration mechanism of riding rice transplanter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding rice transplanter, and more particularly, to a left and right swinging of a working machine body composed of a seedling stand and a planting unit with respect to a working machine frame connected to a traveling machine body. The present invention relates to a restoration mechanism for a connected working machine.

[0002]

2. Description of the Related Art Conventionally, in a riding rice transplanter, a working machine frame connected to a traveling machine body and a working machine main body having a seedling stand and a planting unit mounted thereon are freely swayed (so-called rolling) freely. It is known that a float can always be made to follow a rice field so that planting can be performed even if there is undulation or unevenness in the field, or the inclination of the work machine body.

[0003] At this time, the inclination of the working machine body is restricted to a certain degree or more to prevent the excessive inclination of the working machine body, and a restoring spring is provided between the working machine frame and the working machine body to assist restoration. Also belong to the public domain (for example, Japanese Utility Model Laid-Open No. 62-64207).

[0004]

However, in the conventional device, two left and right springs are provided in a C shape so as to cope with a tilt to the left and right sides as a spring for restoration. Therefore, in order to adjust the magnitude of the restoring force and to balance the left and right restoring forces, it is necessary to adjust a spring for an adjuster further provided on the two springs, and much time is required for the adjustment. There was a necessary defect.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned inconveniences and to provide a restoring spring device which has a simple structure and requires no adjustment work. The work machine frame includes a work machine frame 1c connected to the traveling machine body T, a seedling mounting table 2a, and a planting unit 2b for planting seedlings scraped from the seedling mounting table 2a. In a riding rice transplanter having a restoring mechanism for connecting the machine frame 1c and the working machine body to be able to swing right and left by a pivot 2c in the front-rear direction, and having a restoring mechanism for limiting the swing, a central portion is supported by the working machine frame 1c.
The leaf spring 1e is disposed laterally , and
This is a body restoring mechanism of a riding rice transplanter configured to stably hold a lower surface of a working machine body at an end . Further, the leaf spring 1
e can be moved by a small amount in the horizontal direction across the pivot 2c.
It is configured to be adhered to.

[0006]

[Operation] During the planting operation, when the work machine frame 1c is tilted to the left or right due to undulations or irregularities in the field, the end of the leaf spring 1e facing the lower surface of the tilted side of the work machine frame 1c causes it to move. It supports and applies a reaction force in the direction opposite to the movement, and the greater the inclination, the greater the force to support.

The leaf spring 1e is supported by the work machine frame 1c at the center thereof and is configured to be able to move by a small amount in the left-right direction, so that the bolt position for supporting the pivot 2c and the leaf spring 1e is set. To adjust all the problems caused by the deviation, the manufacturing error of the leaf spring 1e itself, or the imbalance of the weight of the work machine frame 1c by moving the central portion of the leaf spring 1e left and right by a small amount. Can be.

[0008]

[Embodiment] The present invention will be described below with reference to the illustrated embodiment. In the figure, a quadrangular link mechanism 1a is extended to the rear of a traveling machine body T (tractor) that forms a riding type rice transplanter, and the planting machine 1 is supported by the link mechanism 1a. As shown in FIG. 2, the planting work machine 1 has a substantially cylindrical work machine frame 1 welded to the lower end of a vertical frame 1b of a link mechanism 1a.
c, and a working machine body mounted with a seedling mounting table 2a and a planting unit 2b having a planting nail. The two are connected to each other via a pivot 2c having a longitudinal axis.

The working machine main body has a drive case 3 for bearing the other end of the pivot 2c extending from the work machine frame 1c. As shown in FIG. 3, the drive case 3 is formed in a tubular shape by aluminum casting. A drive shaft 3a, which is long in the longitudinal direction, is rotatably supported in the inside thereof. The drive shaft 3a is connected via a bevel gear mechanism 3c to an input shaft 3b connected to the power take-out shaft of the tractor T at the center, and an output sprocket 3d for driving the planting unit 2b at both ends, and a right and left seedling mounting table 2a. And a speed change case 4 for driving a screw shaft 2d for intermittent reciprocating movement. 3e is a central boss that supports the pivot 2c;
Reference numeral 3f denotes a side boss that supports the input shaft 3b on its side.

On the other hand, as shown in FIGS. 2 and 4, the drive case 3 is welded to the lower surface of the cylindrical working machine frame 1c, and is provided with a steel plate stay 1d extending rearward from the central portion of the leaf spring 1e. Are supported, and the leaf spring 1
The lower surface of the drive case 3 is supported at both ends of e. That is, the leaf spring 1e functions as a restoring spring of a planting portion composed of the seedling mounting table 2a and the planting unit 2b provided therebelow, and has a U-shaped cross section extending in the front-rear direction of the body. The center portion is supported by the formed stay 1d, and extends therefrom in a direction orthogonal to the stay 1d.

As shown in FIG. 4, both ends of the leaf spring 1e are bent upward and lightly contact the lower surface of the drive case 3. Therefore, when the working machine body on which the seedling mounting table 2a and the planting unit 2b are mounted swings right and left around the pivot 2c, one end of the leaf spring 1e is pressed by the lower surface of the drive case 3 and deforms to cause the drive case to deform. A reaction force acts on 3 and its magnitude increases in proportion to the magnitude of the rotation, and acts to restore the relationship with the work machine frame 1c.

As shown in FIG. 5, the leaf spring 1e has an elongated hole 1f extending in the longitudinal direction, and is fastened with a bolt 1h. That is, the leaf spring 1e is fixed by loosening the bolt 1h and moving the plate spring 1e right and left along the long hole 1f, so that the ratio of the length extending from the fulcrum to one side and the other side changes. Axis 2 by adjusting the position
An adjustment is made so that a reaction force corresponding to the imbalance of the inertial weights of the right half and the left half centered on c acts.

[0013]

According to the present invention, a body restoring spring device of a riding rice transplanter according to the present invention includes a working machine frame 1c for connecting a planting work machine 1 to a traveling machine body T by a link mechanism 1a, and a seedling mounting table 2a.
And a working machine main body including a planting unit 2b for planting the seedlings scraped from the seedling mounting table 2a. The working machine frame 1c and the working machine main body can be swung right and left by a pivot 2c in the front-rear direction. And a leaf spring 1e having a central portion supported by the working machine frame 1c in a lateral direction.
And set, and is configured to stably hold the lower surface of the machine body at both ends of the plate spring 1e. Further, the leaf spring 1
e can be moved by a small amount in the horizontal direction across the pivot 2c.
It is configured to be adhered to.

Therefore, the central part is supported by the work machine frame 1c.
The held leaf spring 1e is disposed laterally, and the leaf spring 1e
At both ends of the work machine
Therefore, it is necessary to obtain a very simple airframe restoration mechanism.
And there are few parts of the body restoration mechanism and the manufacturing cost is low.
I'm done. Further, there is an imbalance in the inertial weight around the pivot 2c.
At that time, just move the leaf spring 1e slightly in the lateral direction.
Can be adjusted easily.

[Brief description of the drawings]

FIG. 1 is a side view of a riding rice transplanter.

FIG. 2 is an enlarged side view of the main part.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a view on arrow V in FIG. 4;

[Explanation of symbols]

1c Work machine frame 1d Steel stay 1
e Leaf spring 2c Axis 3 Drive case.

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-56-134907 (JP, A) JP-A-59-134509 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01C 11/02 320 A01C 11/02 311 A01B 63/02

Claims (2)

(57) [Scope of request for utility model registration] 1. A work machine frame 1c for connecting a planting work machine 1 to a traveling machine body T by a link mechanism 1a, a seedling mounting table 2a, and a planting unit 2b for planting a seedling scraped from the seedling mounting table 2a. The working machine frame 1c and the working machine main body are provided with a pivot 2 in the front-rear direction.
c, a leaf spring 1e having a central portion supported by the working machine frame 1c and having a restoring mechanism that is connected to be able to swing left and right and limits the swing.
Is disposed laterally to stably hold the lower surface of the working machine body at both ends of the leaf spring 1e. 2. A work machine frame 1c for connecting the planting work machine 1 to a traveling machine body T by a link mechanism 1a, a seedling mounting table 2a, and a planting unit 2b for planting seedlings scraped from the seedling mounting table 2a. The working machine frame 1c and the working machine main body are provided with a pivot 2 in the front-rear direction.
c, a leaf spring 1e having a central portion supported by the working machine frame 1c and having a restoring mechanism that is connected to be able to swing left and right and limits the swing.
The was arranged in the transverse direction, fixed to the plate spring 1e movable by a small amount in the lateral direction across the pivot 2 c, the leaf spring 1
e, a body restoring mechanism of a riding rice transplanter configured to stably hold the lower surface of the working machine body at both ends .