JPH07115816A - Preliminary rice seedling-carrying part structure of riding type rice transplanter - Google Patents

Abstract

PURPOSE:To make it possible to readily carry out change-over operation in lock mechanism and rotation operation in preliminary seedling placing stand in series without requiring labor for changing from an operation part for change over of operation to an operating part for rotation operation. CONSTITUTION:The preliminary seedling placing stands 15 being freely rotatable around vertical shaft center and a lock mechanism L for fixing the preliminary seedling placing stands 15 at a prescribed position are installed on lateral both sides of a traveling machine body A in the front of a driving seat 1, and an operation lever 16 for changing over operation of the lock mechanisms L is provided under the preliminary seedling placing stands 15 so as to integrally rotate with the preliminary seedling placing stands 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spare seedling placement structure for a riding type rice transplanter.

[0002]

2. Description of the Related Art Conventionally, in the structure of the spare seedling placing portion of the riding type rice transplanter as described above, for example, Japanese Patent Laid-Open No. 5-1538 is used.
As disclosed in Japanese Laid-Open Patent Publication No. 24, in order to make it easy to supply seedlings from the spare seedling mounting table to the seedling planting device and from the edge to the spare seedling mounting base, the spare seedling mounting base is vertically arranged. A device equipped with a rotatable mechanism around the axis and a lock mechanism that fixes the preliminary seedling mounting table at a predetermined position in order to prevent unnecessary rotation of the preliminary seedling mounting table during running etc. was there.

[0003]

However, in the prior art as described above, the operation portion (locking pin in the above publication) for switching the operation of the lock mechanism,
Since the operation part for rotating operation of the spare seedling placing base (in the above publication, the spare seedling placing base) has a different structure, seedling replenishment from the spare seedling placing base to the seedling planting device and the edge When rotating the auxiliary seedling mounting table when supplying seedlings from the auxiliary seedling mounting table to the auxiliary seedling mounting table, it is activated between the operation switching operation (release operation) of the lock mechanism and the rotating operation of the auxiliary seedling mounting table. There is a time and effort for changing over from the switching operation unit to the rotation operation unit, and there is room for improvement in terms of operability.

An object of the present invention is to facilitate a series of operation switching operation in a lock mechanism and rotation operation in a preliminary seedling placing table without having to switch the operation section for operation switching to an operation section for rotating operation. Is to be able to do it.

[0005]

In order to achieve the above object, according to the present invention, a spare seedling stand which is rotatable around a longitudinal axis is provided on both left and right sides of a traveling body in front of a driver's seat. It is equipped with a lock mechanism for fixing the preliminary seedling placing table at a predetermined position, and an operating lever for switching the operation of the locking mechanism is provided on the side of the preliminary seedling placing table so as to rotate integrally with the preliminary seedling placing table. It was

[0006]

According to the present invention, when the seedlings are replenished from the preliminary seedling mounting table to the seedling planting device or the seedlings are supplied from the edge to the preliminary seedling mounting table, the operation lever is operated to activate the lock mechanism. After the switching operation (release operation) is performed, the preliminary seedling stand can be rotated by rotating the operation lever.

[0007]

Therefore, according to the present invention, the operation switching operation in the lock mechanism and the rotation operation in the preliminary seedling mounting table can be performed with one hand without having to change over the operation switching operation section to the rotation operation operation section. It became possible to perform a series of steps easily, and it became possible to improve the operability of the preliminary seedling stand.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the entire side surface of a riding type rice transplanter. This riding type rice transplanter has a riding type traveling body A equipped with a driving seat 1 and a link mechanism 2 at the rear of the traveling type body A. It is composed of a seedling planting device B that is vertically movable. The seedling planting device B comprises a seedling placing table 4 on which mat seedlings for planting are placed and which reciprocally laterally moves at a constant pitch with respect to the planted transmission case 3 which also serves as a frame, and one plant from the lower end of the seedling placing table 4. The seedlings are taken out one by one and planted in a field by a planting mechanism 5 and the like.

As shown in FIG. 2, at the center of the front part of the traveling machine body A, an engine hood 7 having steps 6 for getting on and off the ridges on the left and right sides of the traveling machine body A is provided. Further, on the left and right sides of the traveling body A in front of the driver's seat 1, a spare seedling placing section C for accommodating a plurality of spare seedlings is provided.
But they are deployed respectively. The step 6 is composed of a sheet metal material that also serves as a bumper and is fixed to the lower portion of the engine hood 7.

As shown in FIG. 1 and FIG. 2, the preliminary seedling placing portion C is connected to the step 6 side by a bolt connection with a cylindrical auxiliary frame 9 which is laid across the lower front portion of the machine body frame 8 of the traveling machine body A. The supporting frame 10 extended toward one side, the supporting frame 11 extending laterally from the step 6, and the boss 12 welded to each extending end of the supporting frames 10 and 11 so as to include the longitudinal axis P. A pillar 13 that is inserted into the boss 12 so as to have a vertical axis P, a branch pillar 14 that is bent and formed so as to stand upright with the pillar 13 with one end thereof welded to the lower portion of the pillar 13, and a pillar 13. The support columns 13 are arranged on the right and left sides of the support columns 13 and the support columns 14 with the branch support 14 sandwiched therebetween, and are composed of a preliminary seedling mounting table 15 provided in a plurality of stages at predetermined intervals in the vertical direction.
The auxiliary seedling mounting table 15 is made rotatable around the vertical axis P by inserting it into the boss 12 and retaining it with a pin. Further, as shown in FIGS. 3 to 5, each of the preliminary seedling placing bases 15 is formed in a substantially semicircular shape,
A collision between the spare seedling mount 15 and the engine hood 7 due to the rotation of the spare seedling mount 15 is prevented.

As shown in FIGS. 1 to 5, the preliminary seedling placing portion C
Is provided with a lock mechanism L that prevents unnecessary rotation of the preliminary seedling placing table 15 during traveling or the like. More specifically, as shown in FIG. 6 and FIG. 7, a disc-shaped flange 12A is welded to the upper surface of the boss 12, and the outer periphery of the flange 12A facing the driver's seat 1 has three pitches of 30 °. A fixing recess 12a having a rotation preventing action is formed in a cutout portion.

On the other hand, a groove-shaped bracket 13A is welded to the lower part of the column 13, and a long hole 13a is formed in the bottom surface of the bracket 13A. Also, the bracket 1
3A, the operation lever 16 extended toward the driver's seat 1 in a state where the support columns 13 are located in the front and the branch supports 14 are located in the rear along the front-rear direction of the traveling body A and are aligned in a line.
Is pivotally connected so that it can swing up and down. That is, the operation lever 16 is provided on the bracket 13A on the side of the preliminary seedling mounting table 15 so as to rotate integrally with the preliminary seedling mounting table 15.

In the above-mentioned state, the operation lever 16 is inserted through the elongated hole 13a of the bracket 13A, and the central fixing concave portion of the fixing concave portions 12a formed by cutting out at three positions of the flange 12A. A round bar-shaped engaging piece 16a that engages with 12a is extended downward. The operation lever 16 is biased downward by a spring (not shown). That is, the flange 12A, the bracket 13A, the operation lever 16, and the operation lever 1
6 A lock mechanism L is configured by a biasing spring.

By the way, the branch support 14 is made up of the bracket 1.
It is welded to the support column 13 between the 3A and the operating lever 16, and the branch support column 14 includes the engagement piece 16a and the fixing recess 12.
The operation lever 16 is received in a non-rotatable state in which a and a are engaged, and the state can be held by the biasing of a spring.

Explaining the seedling supply from the preliminary seedling placing table 15 to the seedling placing table 4 of the seedling planting apparatus B, the preliminary seedling placing table 1 will be described.
When it is not necessary to take out the seedlings from 5, the engaging piece 16 of the operation lever 16 is arranged so that the preliminary seedling mounting base 15 is in a state along the front-rear direction of the traveling body A, as shown in FIGS. 3 and 6.
The lock mechanism L is operated by engaging a with a central recess 12a of the fixing recesses 12a formed by cutting out at three positions of the flange 12A. When it is necessary to supply seedlings to the seedling mounting table 4 of the seedling planting device B and the preliminary seedlings on the side closer to the traveling machine body A are taken out, as shown in FIGS. 4 and 6, the operation lever 16 is operated. , The lock mechanism L is temporarily released by lifting it against the bias of the spring, and the engaging piece 16a is a recess 12a of the three fixing recesses 12a separated from the traveling machine body A by the spring bias. After the rotating operation is performed in a direction away from the traveling machine body A until it is engaged with, the preliminary seedlings on the side closer to the traveling machine body A are taken out from the fixed preliminary seedling placing table 15. Further, when taking out the preliminary seedling on the side far from the traveling machine body A, as shown in FIGS. 5 and 6, the lock lever L is temporarily released by lifting the operation lever 16 against the bias of the spring. At the same time, the engaging piece 16a is rotated by a spring force in the direction toward the traveling machine body A until it engages with the concave portion 12a of the three fixing recesses 12a close to the traveling machine body A, and then fixed. The spare seedling on the side far from the traveling body A is taken out from the spare seedling mounting table 15. That is, the operation switching operation of the lock mechanism L and the rotation operation of the preliminary seedling mounting table 15 can be easily performed in series.

Further, as shown in FIGS. 6 and 7, the flange 12A is rotated at a 90 ° pitch from the central recess 12a among the fixing recesses 12a formed by cutting out at three positions of the flange 12A. The recesses 12b for temporary fixing having no blocking action are formed in three notches, and when the seedlings are replenished from the edge to the preliminary seedling stand 15, the operation lever 16 is biased by the spring. The lock mechanism L is released by lifting it up, and the engaging piece 16a is rotated until the engaging piece 16a goes over any of the recesses 12a located at both ends of the three fixing recesses 12a. The preliminary seedlings are supplied from the ridges to the preliminary seedling mounting table 15 in a state where the preliminary seedlings mounting base 15 is brought close to the ridges by engaging with the temporary fixing recess 12b. Then, when the supply of the spare seedlings to the spare seedling mounting base 15 is completed and the spare seedling mounting base 15 is returned to the working state shown in FIG. 3, the operation lever 16 is separated from the driver seat 1. Although the operating lever 16 cannot be operated from the driver's seat 1, a guide surface is formed in the recess 12b for temporary fixing so as not to have a rotation-preventing action. By rotating the table 15, the engagement between the engagement piece 16a and the temporary fixing recess 12b can be easily released, and the preliminary seedling table 15 can be returned to the working state.

As shown in FIGS. 1 and 2, the left and right preliminary seedling placing portions C are connected to the upper ends of the respective columns 13 and the connecting frame 1.
It is adapted to be connected by fitting with the end portion of 7, and by connecting the left and right preliminary seedling placing parts C through this connecting frame 17, the number of stages of the preliminary seedling placing base 15 is increased. Therefore, the inclination and shake of the spare seedling placing portion C when the spare seedling placing portion C becomes high are suppressed.
Further, the connecting portion between the support column 13 and the connecting frame 17 has a retaining structure for preventing the connecting frame 17 from falling off during traveling on a bad road, and this retaining structure is shown in FIGS. As shown in FIG. 6, the flanges 13B and the connecting frame 17 welded to the upper edges of the respective columns 13
It is composed of a flange portion 17A welded to both ends of the disk, and a disk-shaped fixture 18 having a notch that allows the connection frame 17 to be fitted therein. Then, after the connecting frame 17 is fitted to the support column 13, the flange 13B of the support column 13 and the fixture 18 are pin-connected with the collar portion 17A of the connecting frame 17 being sandwiched, thereby preventing the connecting frame 17 from falling off. At the same time, rotation of the column 13 with respect to the connecting frame 17 is allowed. By the way, as shown in FIGS. 1 and 2, an awning 19 made of a resin material is attached to the connecting frame 17 in a cantilever state.

[Other Embodiments] The present invention is not limited to the above embodiments, and other embodiments will be listed below. As the preliminary seedling placing portion C and the lock mechanism L, various types can be adopted as long as they are provided with an operation lever 16 that can operate the lock mechanism L and rotate the preliminary seedling placing base 15. The number and pitch of the fixing concave portions 12a and the temporary fixing concave portions 12b formed by notching in the flange 12A of the boss 12 can be appropriately changed.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Fig. 1] Overall side view of the riding rice transplanter

[Figure 2] Front view of a riding rice transplanter

FIG. 3 is a front view of the spare seedling placing portion when the spare seedling is not taken out.

FIG. 4 is a front view of a spare seedling placing portion when the inner spare seedling is taken out.

FIG. 5 is a front view of the spare seedling placing portion when the outer spare seedling is taken out.

FIG. 6 is a vertical sectional side view of the lock mechanism.

FIG. 7 is an exploded perspective view of a lock mechanism.

FIG. 8 is a vertical sectional side view of the connecting portion.

9 is a sectional view taken along line aa in FIG.

[Explanation of symbols]

 1 Driver's seat 15 Preliminary seedling stand 16 Operation lever A Traveling machine P Vertical axis L Lock mechanism

Claims (1)

[Claims] 1. A preliminary seedling placing table (15) rotatable around a vertical axis (P) on both left and right sides of the traveling body (A) in front of the driver's seat (1), and the preliminary seedling placing. Equipped with a lock mechanism (L) for fixing the table (15) at a predetermined position,
An operation lever (16) for switching the operation of the locking mechanism (L) is provided on the side of the preliminary seedling placing base (15) so as to rotate integrally with the preliminary seedling placing base (15). Spare seeding section structure.