JPH0218986Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rice transplanter in which a grounding float is provided on the lateral outer side of the machine body for each of the seedling planting tools located at the left and right ends of the machine body.

Generally, when using a rice transplanter, the machine is run from one end of the field to the other, descends from the bank, turns, and returns to the side where the previous planting started while following the row of previously planted seedlings. This is done by running the seedlings in the direction perpendicular to the machine's running direction, and the spacing between the seedlings in the direction perpendicular to the machine's running direction is almost constant.
Generally, as shown in FIG. 5, in order to fully demonstrate the function of stabilizing the aircraft by grounding, the grounding floats 7a and 7b have a side edge a on the side opposite to the seedling planting fixture 4 side. is formed into a wide one that protrudes roughly toward the planted seedling A side from the center C between the seedlings. Therefore, conventionally,
The grounding float 7b located roughly on the side of the planting area will pass through the previous passage again, and the level of the mud surface through which the float has passed is lower than the mud surface level through which the float has not passed due to the float pressure. , the amount of sinking of the float re-passing the path was greater than the amount of sinking of the other float, so the aircraft was tilted so that it became lower toward the planting area, and the planting depths on the left and right sides were different. An inconvenience had arisen.

The present invention makes it possible to easily prevent the tilting of the aircraft caused by the float on the planting area side passing through the traces of the previous passage, while maintaining the same planting depth between planting rows. The purpose is to enable efficient work while keeping the planting depth constant.

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 1 and 2, a pair of left and right running wheels 1a, 1b, an engine E mounted in front of these wheels 1a, 1b, and the wheels 1
At the rear of the self-propelled aircraft, which is equipped with a control handle 2 and a pair of left and right line-drawing markers 3a, 3b, etc. arranged at the rear of the aircraft, four seedling planting tools 4 are arranged in parallel in the lateral direction of the aircraft. A seedling stand 5 is attached, one front grounding float 6 is provided below the self-propelled aircraft, and three rear grounding floats 7a, 7b, 7c are arranged in parallel on the sides of the aircraft. Of these, the ones 7a and 7b located on the outer side of the machine body are located on the left side end of the machine body among the seedling planting tools 4..., or the one located on the right side end of the machine body is located on the outer side of the machine body. set up, have, 4
It is configured as a walk-behind rice transplanter capable of row planting.

As shown in FIGS. 2 and 3, the ends of the pair of transmission cases 8a and 8b, which respectively support the left and right wheels 1a and 1b, on the opposite side from the wheel mounting side are used to form the fuselage. Mission case 9
to the base member 13 which is separately pivotally connected to the cylindrical fuselage frame 10 and is attached to the cylindrical fuselage frame 10 via a pair of left and right guide rods 11, 11 and a hydraulic cylinder 12,
The link 14 is pivotally connected, and the link 1
4 and arm portions 15a or 15b of the transmission cases 8a, 8b, respectively, are pivotally connected by a push/pull rod 16, and the swinging of the link 14 causes the left and right wheels 1a, 1b to move integrally with respect to the fuselage. They are configured to move up and down in opposite directions, and are configured so that the machine body is maintained almost horizontally regardless of the horizontal inclination or unevenness of the tiller.

In each of the rear floats 7a and 7b, the fourth
As shown in Figures 1 and 5, a link 17a or 17b swingably extended from the front end is swingably and slidably attached to a fixing pin 18 of the fuselage through its elongated hole, and the link 17a or 17b is swingably and slidably extended from the front end. The provided bracket 19a or 19b is pivotally connected to an arm 20a or 20b extending vertically swingably from the body, and then,
By individually swinging the arms 20a, 20b, the floats 7a, 7b are individually raised and lowered relative to the aircraft body.
Also, the swing arm 2 for the left rear float 7a
0a and the operation lever 25b of the right-hand side line-drawing marker 3b are interlocked and connected by the operation wire 24, and when the line-drawing marker 3b is operated to the lowered usage position protruding outward to the right side of the fuselage, the arm 20
a is pulled down by the operating wire 24 until it contacts the stopper 21, the left float 7a automatically becomes lower than the right float 7b by a predetermined level h, and the operating lever 25 is locked to the lever guide 27 and fixed at the marker use position. By letting
The float 7a is configured to be fixed so that it does not rise against the aircraft due to ground reaction force, and when the right line marker 3b is switched to the raised and retracted position in which it is retracted within the width of the aircraft, the arm 20a is moved by the spring 22. The left float 7a, which has been raised until it comes into contact with the stopper 26 and has been lowered, is automatically raised and restored to the same level as the right float 7b. Similarly, the operating lever 25a of the left side line marker 3a and the swing arm 20b relative to the right side float 7b are connected so that the right rear float 7b automatically moves up and down in conjunction with the attitude switching operation of the left side line marker 3a. They are interlocked and connected by an operating wire 28.

As the aircraft turns, the line drawing marker 3a or 3b, which was located on the unplanted land side before the turn and is in the usage attitude, is put in the retracted position, and after the turn, the line drawing marker 3b is located on the unplanted area side.
Or, in conjunction with the delineation marker posture switching operation that changes 3a from the stored attitude to the operating attitude, the float was located approximately on the planting site side and was at a lower level than the rear float 7a or 7b on the opposite side until before the turn. The rear float 7b or 7a automatically rises to the same level as the other rear float 7a or 7b, and is located approximately on the side of the planting site after turning, that is, on the opposite side from the delineation marker 7a or 7b that is in the use position. Float 7b or 7a is behind the other float 7a
Or it is set to automatically become lower than 7b.

In each of the rear floats 7a and 7b, as shown in FIG.
9b and the connecting pin 2 of the swing arm 20a or 20b
9 to the bracket 19a or 19
The floats 7a and 7b are installed in parallel to the floats 7a and 7b, and configured so that the mounting heights of both floats 7a and 7b to the body can be changed separately by changing the mounting position of the bracket 19a or 19b to the arm 20a or 20b. It is designed so that it can be changed and adjusted according to changes in the height, etc.

The operation wires 24 and 28 can be changed to a configuration consisting of a drawing marker attitude detection device and a device that automatically drives and raises and lowers the float based on information from this detection device, and these can be configured to include a drawing marker attitude detection device and a device that automatically drives and raises and lowers the float based on information from this detection device. They are collectively referred to as mechanisms 24 and 28 that automatically raise and lower both ground floats in conjunction with the switching operation.

As shown in FIGS. 6 and 7, each of the seedling planting tools 4 is configured such that when the planted seedlings are held by the seedling planting claws 30 and the seedling pusher 31 and inserted into muddy soil, , Drill holes are formed in the muddy soil prior to the bed soil part 32 for planting seedlings, and a pair of digging claws 33, 33 are installed to prevent the seedling stems and leaves from being rubbed against the muddy soil and being damaged. It is made to protrude from the planting arm 34 in a state relative to the claw 30.

In summary, the present invention provides the above-mentioned rice transplanter, in which both the ground floats 7a and 7b are attached to the machine body so that they can be raised and lowered separately, and the line markers 3a and 3b are operated in a usage position in which the line markers 3a and 3b protrude outward from the sides of the machine body. As the grounding float 7a or 7b located on the opposite side to the line drawing marker protrusion direction becomes lower than the other grounding float 7b or 7a,
In addition, as the line drawing markers 3a and 3b are operated to the retracted position, the grounding float 7a or 7b, which has been lowered, is replaced by the other grounding float 7b or 7.
It is characterized in that mechanisms 24 and 28 are provided for automatically raising and lowering both the grounding floats in conjunction with the line drawing marker posture switching operation so as to raise and restore them to the same level as a.

In other words, when the aircraft is turned to change its running direction and the delineation marker 3a or 3b is switched to a posture corresponding to the new running direction, the side that will pass the previous passage again Since the grounding float 7a or 7b automatically becomes lower than the other float 7b or 7a, the aircraft will not tilt even if the float 7a or 7b on the side of the planting site re-passes its path, and a special This eliminates the need for a float lowering operation. Also, since the float 7a or 7b on the almost planted area side is lowered than the other float 7b or 7a, the float 7a or 7b located on the unplanted area side is raised higher than the other float 7b, 7a, or both floats 7a, 7b are lowered. It is possible to prevent the planting depth from becoming deeper than the previous one, as would be the case when the plants are raised or lowered in opposite directions. Therefore, the difference in the planting depth on the left and right sides caused by the float 7a or 7b on the planting area side re-passing the previous passage trace,
This can be done easily and without changing the planting depth between planting rows, making it possible to efficiently perform work while keeping the planting depth constant.

[Brief explanation of the drawing]

The drawings show an embodiment of the rice transplanter according to the present invention, FIG. 1 is a side view of the walking rice transplanter, FIG. 2 is a plan view of the walking rice transplanter, and FIG. 3 is a side view of the wheel lifting device.
Fig. 4 is a side view of the rear float attachment part, Fig. 5 is a rear view showing the working state of the rear float, Fig. 6 is a side view of the tip of the seedling planting tool, and Fig. 7 is the same as in Fig. 6.
FIG. 3a, 3b... Line drawing marker, 4... Seedling planting tool, 7a, 7b... Grounding float, 24, 28...
...Automatic operating mechanism.

Claims (1)

[Scope of utility model registration request] A rice transplanter is provided with grounding floats 7a, 7b on the lateral outer sides of the seedling planting fixture 4 located at the left and right ends of the machine body, wherein both the grounding floats 7a, 7b are provided.
are attached to the fuselage so that they can be raised and lowered separately, and as the line marking markers 3a and 3b are operated to a usage position in which they protrude outward from the sides of the aircraft, the grounding float 7a or 7b located on the opposite side of the line drawing marker protruding direction is moved. The grounding float 7a or 7b, which has become lower than the other grounding float 7b or 7a and has been lowered as the line drawing markers 3a, 3b are operated to the retracted position, is lower than the other grounding float 7b or 7a.
A rice transplanter characterized by being provided with mechanisms 24 and 28 for automatically raising and lowering both of the grounding floats in conjunction with a line drawing marker posture switching operation so as to raise and restore them to the same level as the rice transplanter b or 7a.