JP2003274717A - Rice transplanter for multi-row planting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice transplanter for multi-row capable of transplanting with reduced amount of mud pushed to outside by an outermost soil leveling float. <P>SOLUTION: The rice transplanter is equipped with an automatically lifting and lowering controlled rice transplanter on a traveling body, mounts a soil leveling float 16(1), a center float, on the left and right center of the transplanter, and mounts more than one parallely-arranged leveling floats 16(2), 16(3) on the both left and right side of the center float 16(1), and constitutes the soil leveling float 16(3) located on the outermost position in the group of the soil leveling floats as a soil leveling float for single row and locates at an elevated position than the other soil leveling floats 16(1), 16(2). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to Article 8 or 10
The present invention relates to a multi-row planting machine in which a seedling planting device for planting a row is connected to a traveling machine body so as to be capable of automatic lifting control.

[0002]

2. Description of the Related Art A rice transplanter with an eight-row planting specification, which is an example of the position of the above-mentioned multiple-row planting rice transplanter, is, for example, Jitsuko Sho-60-19.
As disclosed in Japanese Unexamined Patent Publication No. 528, arranging eight rows of planned planting sites in parallel with four arranging floats arranged in parallel, and as disclosed in Japanese Unexamined Patent Publication No. 2001-128512, It is known that land is planned with 5 ground leveling floats where the planned planting locations are arranged in parallel.

In the former case, since each of the ground leveling floats arranged in parallel has a wide width for leveling two lines, mud pushing is likely to occur at the front part of the float.
In particular, the mud flow generated by the outermost leveling float may disturb the posture of the seedlings that have already been planted or may fall, but by installing the outermost leveling float higher than the inner leveling float, this leveling float We are trying to reduce the mud pushing by. In addition, in order to reduce the mud pushing by the outermost leveling float, the outermost leveling float is configured to have a narrow width for single-row leveling.

[0004]

However, in the former conventional example, the amount of subsidence of the outermost leveled float on the paddy field is reduced, so mud pushing is reduced, but the lateral width of the entire float is still large. A considerable amount of mud pushing occurs, and particularly when running at high speed to improve planting work efficiency, the outermost leveling float tends to cause adverse effects due to mud pushing.

Further, in the latter conventional example, the mud pushing is reduced because the lateral width of the outermost leveled float is small, but a considerable amount of mud pushing is still generated because the whole sink of the float is large. Especially, when running at high speed to improve planting efficiency, the mud pushing by the outermost leveled float was likely to cause adverse effects.

The present invention has been made in view of such circumstances, and a main object of the present invention is to provide a multi-row rice transplanter capable of planting with less mud pushing by the outermost leveled float. It is what

[0007]

[Means for Solving the Problems] [Structure of Invention According to Claim 1 and Functions and Effects]

The invention according to claim 1 is equipped with a seedling planting device which is automatically controlled to move up and down at the rear part of the traveling machine body, and a leveling float serving as a center float is arranged at the left and right center of the seedling planting device and the center float. A plurality of ground leveling floats are arranged in parallel on each of the left and right sides of the ground leveling ground, and the outermost leveling ground float of the ground leveling float group is configured for single-row ground leveling and is arranged higher than other ground leveling floats. Characterize.

According to the above construction, the number of leveling floats located on the outermost side of the leveling floats arranged in parallel is two.
The width is smaller than that of the ground leveling type, and since there is less subsidence on the rice field than other leveling floats, there is less mud pushing.

Therefore, according to the first aspect of the present invention, even if the planting work is carried out while traveling at a high speed, there is no possibility of the existing seedlings being adversely affected by the mud pushing by the leveling float located at the outermost side. The planting can be performed more efficiently.

[Structure of Invention According to Claim 2 and Operation / Effect]

According to a second aspect of the present invention, in the invention of the first aspect, the bottom surface of the outermost surface ground leveling float for single-row grounding is formed by elevating a leveled ground surface sliding down a planting site. At the same time, this raised leveling ground is set at the same height or almost the same height as the ground leveling of other ground leveling floats.

According to the above construction, the mud pushing of the outermost leveling float can be reduced and the leveling level of all the strips can be made uniform.

Therefore, according to the second aspect of the present invention, it is possible to efficiently perform multi-row planting at high speed without adversely affecting the already planted seedlings by the mud pushing by the outermost leveled float, which adversely affects the existing seedlings. The planting depth of the strip can be made uniform.

[Structure of Invention According to Claim 3 and Functions / Effects]

According to a third aspect of the present invention, the rear part of the traveling machine is equipped with a seedling planting device which is automatically controlled to move up and down, and a leveling float to be a center float is arranged at the center of the seedling planting device at the left and right, and the center float is provided. A plurality of ground leveling floats are arranged in parallel on each of the left and right sides of the ground, and the outermost leveling float of the ground leveling float group is configured for single-row leveling and has a vertical thickness that is thinner than other floats. It is characterized by being done.

According to the above structure, the number of ground leveling floats located on the outermost side of the ground leveling float group arranged in parallel is two.
The width is smaller than that of the ground leveling type and it is thinner than other leveling floats, so the mud pushing is extremely small.

Therefore, according to the third aspect of the present invention, even if the planting operation is performed by traveling at a high speed, there is no possibility that the mud pushing by the outermost leveled float will adversely affect the planted seedlings, resulting in efficient and efficient planting. The planting can be performed more efficiently.

[Structure of Invention According to Claim 4 and Operation / Effect]

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, a ground leveling float for single-row leveling located at the outermost side is provided laterally outward in front of the planting site. It is formed in an inverted L-shape in plan view having an overhang portion.

According to the above-mentioned structure, the outermost leveling float has a smaller width than the two-row leveling type so that mud pushing is less, and since the overhanging portion is short in the front and rear direction, the mud flow dives through the overhanging portion. It becomes easy to flow backwards.

Therefore, according to the invention of claim 4, the mud pushing by the outermost leveled float is extremely reduced, which promotes the above effect of the invention of any one of claims 1 to 3.

[Structure and Action / Effect of Invention of Claim 5]

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the rear end of the outermost outermost leveled ground leveling float is located inside this leveling float. It is configured to be located in front of the rear end of the leveling float.

According to the above-mentioned structure, the outermost leveling float has a smaller width than the two-row leveling type so that mud pushing is less, and the overall length is also shorter, so that the mud flow dives through the leveling float to the rear. Is also easy to flow.

Therefore, according to the invention of claim 5, the mud pushing by the outermost leveled float is extremely reduced, further promoting the above-mentioned effect of the invention of any one of claims 1 to 4.

[0027]

1 and 2 show a riding-type rice transplanter having an eight-row planting specification. This rice transplanter
At the rear of the four-wheel drive type passenger traveling body 3 including a pair of left and right steerable front wheels 1 and a pair of unsteerable left and right rear wheels 2,
The seedling planting device 4 is vertically movably connected through a four-link mechanism 6 driven by a hydraulic cylinder 5, a fertilizer application device 7 is provided at the rear part of the machine body, and a spare seedling stand is provided on the left and right of the front part of the machine body. 8 has been deployed.

The seedling planting device 4 is connected to the rear end of the quadruple link mechanism 6 so that it can be rolled freely.
From which the power for work is axially transmitted, a support frame 12 in the shape of a horizontally long rectangular tube, and a seedling stand 1 on which 8 rows of seedlings are placed and which is reciprocally moved with a constant stroke in the left-right direction.
3. Eight sets of rotary type planting mechanism 14 for cutting out one seedling from the lower end of the seedling stand 13 and planting it in the field, connected to the support frame 12 in parallel, and one planting mechanism 14 on each side. It comprises four planting cases 15 provided, five ground leveling floats 16 for leveling the planting site, and the like.

The fertilizer application device 7 is mounted on the traveling machine body 3 between the driver's seat 9 provided on the rear part of the traveling machine body 3 and the seedling planting device 4, and the fertilizer hopper for storing the granular fertilizer. 21, a feeding mechanism 22 that feeds the fertilizer in the fertilizer hopper 21 by a set amount, an electric fan 25 that wind-feeds the fed fertilizer to a grooving device 24 provided in the leveling float 16 via a supply hose 23, and the like. I have it.

As shown in FIG. 4, among the 5 leveled floats 16 arranged in parallel, the leveled float (center float) 16 (1) in the center and the leveled floats 1 on the left and right sides thereof are provided.
6 (2) is used for two-level grounding, and is formed in a T-shape in a plan view having laterally protruding front parts 16a and 16b, and the outermost leveling float 16 is used. For (3), the one formed in the inverted L-shape in plan is used for single-row landscaping. And each leveling float 1
6 (1), 16 (2), and 16 (3) swing up and down around a common rear fulcrum p at the rear end of a float support arm 32 extending rearward from a horizontally laid float fulcrum shaft 31. The float fulcrum shaft 31 is movably pivotally connected, and the planting depth is adjusted by rotating the float fulcrum shaft 31 with the planting depth adjusting lever 33 to change the position of the rear fulcrum p up and down with respect to the planting mechanism 14. Is configured to.

Of the five leveling floats 16, the center float 16 (1) functions as a grounding sensor for automatically raising and lowering the seedling planting device 4, and the center float 16 (1) is directed upward. In order to prevent a large amount of resistance from protruding rearward from the rear fulcrum p into the paddy field T when swinging, the rearward protruding point rearward from the rear fulcrum p does not have a large resistance. It is set sufficiently shorter than 16 (3).

Further, the leveling floats 16 (2) on the left and right outer sides of the center float 16 (1) are set to have a protruding length rearward from the rear fulcrum p sufficiently long to secure a large ground contact area. The seedling planting device 4 can be stably grounded and supported on the rice field T against rolling operation.

Further, as shown in FIGS. 5 to 7, the leveling float 16 positioned on the outermost side and leveling only one of the outermost ends is leveled.
(3) is a hollow main part of the float which is long in the front and rear direction, and is formed by projecting a ground leveling part for the planting part from the front half part to the lateral outside, and the projecting part 16c is formed thinly in a plate shape and Leveled ground s1 is another leveled float 1
Leveled ground s for planting points in 6 (1) and 16 (2)
It is set slightly higher than 2 (for example, about 5 to 10 mm). Further, the rear end of the leveling float 16 (3) is set to be located in front of the rear end of the leveling float 16 (2) inside the leveling float 16 (3). In this way, by making the outermost leveling float 16 (3) narrow, thin up and down, raising the leveling ground s1 and shortening the front-rear length, the mud on the surface T can be used as the leveling float 16 (3). 3) It becomes easier to pass under and over, and mud pushing by the front end of the float is reduced. Further, since the rear of the overhanging portion 16c is opened laterally outward, the mud flow pushed laterally outward at the front end of the float is overhanging the overhanging portion 1c.
It is easy to flow to the inside behind 6c, and the washout to the already planted seedling side is reduced.

As shown in FIG. 8, the sensor link 35 functions as a grounding sensor for automatically raising and lowering the seedling planting device 4, but a sensor link 35 pivotally extends upward from the front part of the center float 16 (1). And support frame 12
A rotary angle sensor 38 is supported by a bracket 36 extending forward from the
The sensor link 35 is connected to the operation lever 39 of the angle sensor 38. And center float 1
When 6 (1) swings up and down about the rear fulcrum p, the operating lever 39 of the angle sensor 38 is swung, and the vertical displacement of the center float 16 (1) is electrically detected. There is.

As shown in FIGS. 9 and 10, the angle sensor 38 has a rotary potentiometer 41 incorporated and fixed inside a waterproof case 40 made of aluminum die-cast and connected and supported to the front end of the parallel four-link mechanism 37. A rotary shaft 41b, which is butt-fitted and connected to the operating shaft 41a of the rotary potentiometer 41, is penetratingly supported by the side surface of the waterproof case 40, and the operating lever 3 is attached to the protruding end of the rotating shaft 41b.
It has a structure in which 9 are connected. Also, the rotating shaft 41b
The sensor spring 43 is mounted over the arm 41c provided in the case inner part and the pin 42 in the case, and the rotary shaft 41b and the operation lever 39 connected to the rotary shaft 41b are connected to each other.
Further, the center float 16 (1), which is urged to rotate clockwise in FIG. 9 and connected to the operation lever 39 through the sensor link 35, is always urged downward. Further, a plurality of spring connecting holes h (three in this example) are formed in the arm 41c, and the center float 16 (1) is directed downward by selecting the connecting position of the sensor spring 43 to the arm 41c. The elastically urging load (sensor load) can be adjusted according to field conditions such as mud hardness.

The waterproof case 40 has a side surface opposite to the side through which the rotating shaft 41b is supported so that it can be opened and closed by attaching and detaching the cover 40a. By opening the cover 40a, the interior parts are assembled. It is possible to easily perform replacement, adjustment, and the like, and by closing the cover 40a, it is possible to reliably protect the internal function part from muddy water.

Although not shown, the angle sensor 38 is connected to a control device which controls the operation of the electromagnetic control valve of the hydraulic cylinder 5, and operates the electromagnetic control valve based on the fluctuation of the detection signal from the angle sensor. The seedling planting device 4 is moved up and down.

That is, when the center float 16 (1) is in the predetermined angular posture range and the signal from the angle sensor 38 is in the set range, the electromagnetic control valve is in the neutral position, and the seedling planting device 4 is set to the rice field T. Is in a predetermined height range, and this time is the reference state. When the traveling machine body 3 sinks or the seedling planting device 4 tilts forward and tilts toward the rice field T, the ground pressure acting on the center float 16 (1) rises and the biasing force of the sensor spring ( When the center float 16 (1) is displaced upward from the reference state against the sensor load), this is detected as an output change of the angle sensor, the electromagnetic control valve is switched to the rising side, and the seedling planting device 4
Is controlled to rise, and when the original reference state is reached, the rise control is stopped. Further, when the traveling machine body 3 reaches a shallow part of the cultivator or when the seedling planting device 4 is tilted downward and floats above the rice field T, the ground contact pressure acting on the center float 16 (1) is reduced, and The center float 16 (1) is displaced downward from the reference state due to the weight of the float 16 (1) and the biasing force (sensor load) of the sensor spring, and this is detected as an output change of the angle sensor, and the solenoid control valve is switched to the down side. The seedling planting device 4 is controlled to descend,
When the original reference state is reached, the descent control is stopped.

Even if the planting depth is changed by operating the planting depth adjusting lever 33 to adjust the height of the rear fulcrum p of the entire ground float 16, the center float 16 (1) can be kept in the standard posture. In order not to change, it is configured as follows. That is, the parallel four-link mechanism 37
The planting depth adjusting lever 33 and the planting depth adjusting lever 33 are connected by an interconnection rod 44.
When the rear fulcrum p is lowered by operating upward from the above state and the planting depth is made shallow, the parallel four-link mechanism 37 is lowered in conjunction with the upward operation of the planting depth adjusting lever 33, and the rear fulcrum p is lowered. The angle sensor 38 is also lowered in parallel by the same amount as the amount, and the reference attitude of the center float 16 (1) that brings about a control neutral state is maintained constant regardless of the planting depth adjustment.

Further, as shown in FIGS. 3 and 4, in order to prevent the center float 16 (1) from being displaced up and down by detecting the roughness of the rice field T, the front of the center float 16 (1) is A wide leveling roller 45 is horizontally installed. The leveling roller 45 is freely rotatable around the lower ends of left and right swing arms 47 that are swingably mounted around a lateral fulcrum x at the front ends of a pair of left and right support arms 46 extending forward from the support frame 12. The grounding roller 45 is elastically pressed against the rice field T by an appropriate force by urging the swing arm 47 downward by the spring 48. Also,
The lower limit of the swing arm 47 is restricted by the knob bolt 49, and the lower limit of the leveling roller 45 can be arbitrarily adjusted by adjusting the knob bolt 49 according to the hardness of the rice field T. It is possible. The support arm 4
6 and a supporting frame 12, a reinforcing stay 50 is provided, and a rake-shaped leveling plate 51 is attached to the front end of the reinforcing stay 50 so that the height thereof can be adjusted. Leveled float 1 on both sides
It is configured to level the area in front of 6 (2).

[Another Embodiment] The leveling float 16 (3) located on the outermost side and leveling only one outermost end can be formed into a cage shape as shown in FIG. In other words, in this case, the ground leveling s3 for leveling only the planting site is partially raised on the bottom surface of the overhanging portion 16c, and the raised leveling ground s3 is used for other leveling floats 16 (1), 16 By setting the height to be equal to that of the leveled ground s2 in (2), it is possible to make the mud flow below the leveled float 16 (3) uniform and to make the planting depths of all the planting rows uniform.

[Brief description of drawings]

[Fig. 1] Overall side view of passenger rice transplanter

[Fig.2] Overall plan view of passenger rice transplanter

[Figure 3] Side view of the seedling planting device

FIG. 4 is a plan view showing an arrangement state of leveling float groups.

FIG. 5 is a rear view showing a group of leveled floats on the left half.

[Fig. 6] Side view of the leveling float

FIG. 7 is a perspective view of the leftmost leveling float.

FIG. 8 is a side view of the center float.

FIG. 9 is a side view showing the internal structure of the angle sensor.

FIG. 10 is a front view showing the internal structure of the angle sensor.

FIG. 11 is a rear view showing the left half ground leveling float group in another embodiment.

[Explanation of symbols]

3 traveling aircraft 4 Seedling planting equipment 16 (1) Leveled float (center float) 16 (2) Leveling float 16 (3) Leveling float 16c Overhanging part s2 leveling ground s3 Leveled ground

Claims (5)

[Claims] 1. A traveling machine body is equipped with a seedling planting device that is automatically controlled to move up and down, and a leveling float that serves as a center float is arranged at the center of the seedling planting device on the left and right sides, and a plurality of left and right sides of the center float are provided. A multi-row planting planter characterized in that the leveled floats are arranged in parallel, and the outermost leveled float of the leveled float group is configured for single-row leveling and arranged higher than other leveled floats. . 2. A ground leveling ground for sliding a planting point is formed by bulging downward on the bottom surface of the ground leveling float for outermost single-level ground leveling, and this raised ground leveling is used for another ground leveling float. 2. The multi-row planting machine according to claim 1, wherein the height is set to be substantially the same as that of the ground leveling ground. 3. A traveling machine body is equipped with a seedling planting device which is automatically controlled to move up and down, and a leveling float serving as a center float is arranged at the center of the seedling planting device on the right and left sides, and a plurality of left and right sides of the center float are provided. The leveled floats are arranged in parallel, and the outermost leveled floats of the leveled ground float group are configured for single-row leveling and have a vertical thickness thinner than other floats. Multi-row planting machine. 4. The ground leveling float for single-row leveling located on the outermost side is formed in an inverted L-shape in plan view having a laterally outwardly projecting portion in front of the planting site. The multi-row planting rice transplanter described in any one of 1. 5. The rear end of the leveling float for single-row leveling located on the outermost side is arranged to be located in front of the rear end of the leveling float located inside of this leveling float. The multi-row planting rice transplanter according to any one of 4 above.