JP2001224212A - Rice transplanter - Google Patents

Abstract

(57) [Problem] To provide a rice transplanter capable of stably supporting a seedling planting device with a small and small grounding stand. SOLUTION: A stand mounting portion 19 is provided at both ends of a float support shaft 10 for supporting a ground float 11. A grounding stand 20 is mounted on the stand mounting portion 19 to support the planting apparatus 3 on the ground.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter configured to adjust a planting depth by changing a height of a ground float with respect to the planting body by rotating and adjusting a float support shaft. .

[0002]

2. Description of the Related Art When a rice transplanter is loaded and transported on a carrier, stored in a garage, or when performing maintenance work, a ground stand for supporting a lowered seedling planting device is provided. The contact of the ground float with the ground was avoided by floating the ground float.
In this type of conventional technique, there is a technique in which a grounding stand is connected to the body of a seedling planting apparatus. (For example, Kono Sho 59
-1449 publication)

[0003]

However, according to the above-mentioned prior art, even if the grounding stands are attached to both sides of the seedling plant, the distance between the grounding points of both stands is narrow, and stability in the left-right direction tends to be poor. Met. In addition, in order to increase the distance between the ground points so that the ground can be supported stably, it is necessary to use a ground stand that has a long distance from the part connected to the stand mounting part of the planting machine to the ground point. However, the ground stand became heavy and large, and was expensive.

An object of the present invention is to provide a combine which can be stably supported by a relatively small and inexpensive ground stand.

[0005]

According to a first aspect of the present invention, there is provided a seedling planting apparatus connected to a rear portion of a traveling body so as to be capable of ascending and descending through a float support shaft extending along a lateral direction of the body. And a planting depth adjusting operation mechanism for changing the height of the grounding float with respect to the planting body by rotating and adjusting the float support shaft. The present invention is characterized in that a stand mounting portion for connecting a grounding stand for supporting the seedling planting device is provided at both ends of the shaft.

[Operation] A ground stand is attached to both ends of the float support shaft to support the ground. Since the float support shaft supports the ground float,
Both ends of the float support shaft are located laterally outside of the planting machine. This makes it possible to use a grounding stand that has a shorter distance from the part connected to the stand mounting part on the fuselage side to the grounding point, compared to the conventional mounting method where the grounding stand is attached to the planted body. The seedling-planting device can be supported on the ground by widening the interval between the grounding points.

[Effect] The distance between the grounding points on the left and right grounding stands is widened, and the grounding stands can be stably supported. For that reason, a light and inexpensive ground stand having a relatively short distance from the portion connected to the stand mounting portion to the ground point is adopted, and the ground is advantageously supported on the ground.

According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, the stand mounting portion is connected to the ground stand so that the ground stand can be switched between a lowered use posture and a raised storage posture. The point is that it is configured as follows.

[Operation] By mounting the grounding stand on the float support shaft with the grounding stand in the raised storage position, the rice planting operation is performed while the grounding stand is kept attached to the seedling planting apparatus and the grounding stand does not become an obstacle. And running can be performed, and there is no danger of being lost as in the case where the grounding stand is removed and stored, and there is no need to go to the place where the grounding stand is used.

[Effect] Even when the grounding stand is unnecessary, it is left attached to the seedling planting apparatus, and it is stored advantageously so as not to be lost. Can be used on the spot.

According to a third aspect of the present invention, in the configuration of the second aspect of the present invention, the raised storage posture is such that the seedling mounting table of the seedling placement device is slidably guided in a lateral direction. The point is that the posture is set so as to act as a guard against the end of the guide rail.

[Operation] When the grounding stand is mounted in the raised storage position, the grounding stand guards the end of the sliding guide rail, and the grounding stand is stored as a guard member for the sliding guide rail. I can.

[Effect] When the grounding stand is stored, it can be used as a guard means to prevent the sliding guide rail from being damaged at a low cost.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a riding rice transplanter to which the present invention is applied. This rice transplanter is configured such that a seedling planting device 3 is connected to a rear portion of a traveling machine body 1 via a link mechanism 2 so as to be able to move up and down, and to be rotatable left and right around a longitudinal axis. The power from the engine 4 mounted on the front part of the traveling body 1 is transmitted by the PTO transmission shaft 5 to the seedling planting device 3.
To tell.

As shown in FIG. 2, a feed case 6 is connected to the seedling planting device 3 so as to be freely rotatable about a longitudinal axis around the link mechanism 2.
And a pair of planting arms 9 are arranged at the free ends of the rotary cases 8 at the free ends of the rotary cases 8. The power of the PTO transmission shaft 2 is transmitted to the rotary case 8 via the feed case 6 and the chain case 7 so that two rotations of the rotary case 8 can be planted. .

As shown in FIGS. 2 and 3, the seedling planting device 3 is provided with a float support shaft 10 made of a pipe material extending in the left-right direction, positioned below the base of the chain case 7. The rear part of the ground float 11 is temporarily supported via the support shaft 13 at the front end of the support arm 12 which is temporarily provided and extends rearwardly in a cantilever manner from the center and left and right portions of the float support shaft 10. Have been. The front end of the grounding float 11 is supported by the planting body via a bending / extending link member 14. Thereby, the ground float 1
1 is supported so as to be able to swing up and down around the axis X. A seedling table 15 is provided above the rotary case 8 so that the seedling table 15 is reciprocally moved laterally at a constant stroke. There is provided a belt-type vertical feeding device 17 for sending out toward the attached arm 9.

Next, the structure of the ground stand 20 will be described. As shown in FIGS. 5 and 6, the grounding stand 20 is formed of a pipe material bent in a U-shape, and one end of the grounding stand 20 is connected to the float support shaft 10.
Around the axis X on the stand mounting part provided at the end of
It is rotatably connected to a lowered use posture and a raised storage posture. In the lowered use posture, the bent portion 20b on the free end side of the ground float 20 is grounded. In the raised storage position obtained by changing the position of the ground stand 20 around the axis X of the float support shaft 10, the ground stand 20
Of the sliding guide rail 16 is located laterally outside the end of the sliding guide rail 16, and functions as a guard member for preventing the end of the sliding guide rail 16 from being deformed or damaged by contact with other objects.

The mounting structure of the ground stand 20 will be described. The stand mounting portion 19 is constituted by an end of the float support shaft 10 and a fixing member 21 fixed to the support shaft end. That is, the ground stand 2 is attached to the float support shaft 10.
Insert and support the proximal end of zero. By rotating the base end of the grounding stand 20 with respect to the float support 10, the grounding stand 20 is switched between the raised storage position and the lowered use position. Regardless of whether the grounding stand 20 is in the raised storage position or the lowered use position, the stand 2
The fixing screw 21 having the through hole 24b of the lock member 22 fixed to the fixing member 21 is inserted into the screw hole 24a of the fixing member 21.
And the locking member 22 is fastened to the fixing member 21 so that the ground stand 20 can be maintained in each position.

Next, the planting depth adjusting operation mechanism will be described. As shown in FIGS. 2 and 4, the lower end of the planting depth adjusting lever 25 is connected to the upper end of a connecting plate 25 a that rotates integrally with the float support shaft 10 by a bolt-type connecting portion 25 b and a tongue-type. There is provided a planting depth lever guide 28 which is connected by two points of the connecting portion 25c and has a locking portion 28a which can lock the planting depth adjusting lever 25 at an arbitrary operation position. . The bolt type connecting portion 25b of the connecting portions 25b and 25c is connected to the connecting plate 25a and the planting depth adjusting lever by a bolt and a nut inserted into the hole between the connecting plate 25a and the planting depth adjusting lever 25. 25 and the head portion of the bolt and the planting depth adjusting lever 25.
And a spring provided between them. Also, the tongue-type connecting portion 25c is configured such that the projection formed by the tongue when punching the connecting plate 25a is inserted into the receiving hole of the planting depth adjusting lever 25 so as to be engaged with the adjusting lever 25. Make up.

That is, when the planting depth adjusting lever 25 is operated around the axis X of the float support shaft 10, the planting depth adjusting lever 25 and the connecting plate 25a are connected by the two connecting portions. By swinging together, the float support shaft 10 can be rotated. Also, adjust the planting depth adjusting lever to the float spindle 1
When the operation is performed in the direction of the axis 0 (the direction of the bolt axis of the bolt type connecting portion 25b), only the planting depth adjusting lever 25 is configured to be able to swing by a predetermined angle, and this swinging operation allows The locking portion 26a can be disengaged from the locking portion 26a, and is urged toward the locking portion 26a by a spring 25d of the bolt type connecting portion 25b.

Therefore, by pivoting the planting depth adjusting lever 25 about the axis X of the float support shaft 10, the float support shaft 10 rotates and the support arm 12 rotates. As the fulcrum 13 moves up and down, the vertical spacing between the seedling planting device 3 and the rear end of the ground float 11 changes, and the planting depth changes. Then, the planting depth adjustment lever 25 operated to an arbitrary operation position is
It is fixed to an arbitrary planting depth by being locked to a by the bias of a spring.

The structure for controlling the amount of seedlings to be harvested will be described.
As shown in FIGS. 2 and 4, the lower end side of the seedling picking amount adjusting lever 27 is provided with a bolt type connecting portion 27b and a punching tongue piece type on the upper end of a connecting plate 27a which rotates integrally with the adjusting shaft 31b. The seedlings are connected by two points of the connecting portion 27c in the same manner as the planting depth adjusting lever 25, and formed with a locking portion 28a which can be locked to an arbitrary operation position by the seedling collecting amount adjusting lever 27. A take-up lever guide 28 is provided.

That is, by swinging the seedling collecting lever 27 around the axis Y of the adjusting shaft 31b, the adjusting arm member 31 provided so as to be rotatable integrally with the adjusting shaft 31b is rotated. Rock around. Then, the adjusting arm member 31 moves the sliding guide rail 16 to the guide member 32.
The seedling mounting table 15 is moved in the distance direction with respect to the seedling movement locus of the planting arm 9. This makes it possible to adjust the amount of the seedlings to be taken out from the seedling placing stand 15 by the planting arm 9 in the vertical direction of the seedling placing stand. Then, the seedling picking adjustment lever 27 that has been operated to an arbitrary operation position is fixed to an arbitrary planting depth by being locked to the locking portion 28b by the bias of the spring 27d.

The lever guides 26 and 28
Are attached to both ends of a support pipe 30 in the lateral direction of the body supported by a support member 29 connected to the feed case 6. Therefore, both lever guides 26 and 28
It has a simple structure that allows the left and right parts to be balanced. The connecting portion 25b and the connecting portion 27
b are formed in the adjusting lever 25,
When the shaft 27 is pivoted in the direction of the axis of the float support shaft 10, the bolts and the protruding portions with respect to the adjustment levers 25 and 27 are allowed to move to a predetermined angle.

[Another Embodiment] In the above embodiment,
The stand mounting portion 19 is constituted by the float support shaft 10 and the fixing member 21.
One end or the whole connected to the float support shaft 10 is formed in a polygonal shape, and the float support shaft 10 is also formed with a polygonal stand mounting hole in the axial direction, and the ground stand 20 is inserted into the mounting hole. You may comprise so that it may be fixed. Further, this structure may be adopted together with the connection structure of the above-described embodiment.

[Brief description of the drawings]

Fig. 1 Side view of the entire riding type rice transplanter

FIG. 2 is a schematic plan view of a seedling planting apparatus.

FIG. 3 is a side view showing a lowered use posture and a raised storage posture of the grounding stand.

FIG. 4 is a plan view showing an arrangement portion of a lever guide.

FIG. 5 is a plan view showing a stand mounting portion.

FIG. 6 is a perspective view showing a stand mounting portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running body 3 Seedling plant 10 Float support shaft 11 Ground float 16 Sliding guide rail 19 Stand mounting part 20 Ground stand

Claims (3)

[Claims] 1. A seedling planting device operatively connected to a rear portion of a traveling body so as to be operable up and down and provided with a grounding float supported via a float support shaft extending along the lateral direction of the machine body, and rotating the float support shaft. A rice transplanter having a planting depth adjusting operation mechanism for changing the height of the grounding float with respect to the planting body by performing the above operation, wherein the seedling planting device is supported at both ends of the float support shaft. Rice transplanter with a stand mounting part for connecting 2. The rice transplanter according to claim 1, wherein the stand mounting portion is configured such that the ground stand is switchably connected to a lowered use posture and a raised storage posture. 3. The method according to claim 2, wherein the ascending storage position is set to a position that acts as a guard against an end of a sliding guide rail that guides the seedling mounting table of the seedling placement device in a lateral direction. Rice transplanter as described.