JPH09205823A - Operation device for rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that a drawn line is useless since the drawn line becomes invisible because of the muddiness of water or by disappearing in a deep-water paddy field or poorly drained paddy field while a rice transplanter is advanced along the line drawn on a mud surface as a target. SOLUTION: In the course of the center of a traveling vehicle body 1, a couple of poles 53 as the target of straight movement of the traveling vehicle body 1 are inserted into or nearby a right and a left headland B. A pole extraction and insertion device 43 which extracts a pole 53 and inserts it into or nearby a head land B in the course of the center of the traveling vehicle body 1 on a next going or return way when the traveling vehicle body l reaches the poles 53 on a going way or return way is provided at the front part of the traveling vehicle body.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention is applied to a rice transplanter used in a paddy field.

[0002]

2. Description of the Related Art A marker is provided on a rice transplanter to
On the next return path, a line is drawn at the position where the center of the traveling vehicle body is to be passed, and on the outward path, the rice transplanter is driven with this line as a mark.

[0003]

In paddy fields and wetlands with deep water, the line drawn with the marker on the outward path was often invisible because the water became muddy or thin and could hardly be seen on the return path. .

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a straight traveling target of a traveling vehicle body 1 on or near a headland B on the left and right of a rice field A on or near a center course of the traveling vehicle body 1. When the traveling vehicle body 1 reaches each of the poles 53 on the outward route 50 and the return route 51, the poles 53 are pulled out, and the traveling vehicle body 1 on the center route of the traveling route 52 on the next outward route 52 and the return route. The pad inserting / removing device 43 to be inserted into the headland B or in the vicinity thereof is used as the driving device of the rice transplanter provided in the front part of the traveling vehicle body.

[0005]

Since the present invention is constructed as described above, the operator drives the rice transplanter toward the front headland B or the pole 53 inserted in the vicinity thereof. This route is called the outward route 50. And this rice transplanter is the pole 53
When the pole slipping device 43 pulls out the pole 53, the headland B is near the center line through which the rice transplanter passes on the next outgoing path 52.
Insert 3. After that, the operator makes a U-turn of the rice transplanter, and advances toward the other pole 53 which is inserted in or near the other headland and the rice transplanter is a straight ahead target on the return path 51. Then, when the rice transplanter reaches another pole 53 in the same manner as described above, the pole 53 is pulled out and inserted into the target position on the next return path, and then the rice transplanter makes a U-turn to make the above-mentioned forward path. Go straight toward the pole 53 replaced at the end of 50.

[0006]

[Effect] As described above, according to the present invention, since the rice transplanter is advanced toward the pole 53 projecting above the ground,
Even in paddy fields and wetlands with deep water, the target is clear and operation is easy.

[0007]

Next, an embodiment of the present invention will be described. FIG.
Further, as shown in FIG. 2, a seedling planting device 2 is attached to the traveling vehicle body 1 to form a rice transplanter. The traveling vehicle body 1 is configured as follows. A main gearbox 4 and a rear gearbox 5 are provided in front of and behind the frame 3, and a pair of front wheels 6 and 6 are provided on both sides of each.
And rear wheels 7, 7 are arranged. The engine 8 is provided on the frame 3, and its power is transmitted to the front wheels 6 and 6 and the rear wheels 7 and 7 via the transmissions and gear groups in the main gear box 4 and the rear gear box 5, and these are transmitted. It is designed so that the traveling vehicle body 1 advances by rotating on the tiller. Seat 9 engine 8
The steering handle 10 is provided in front of the steering wheel 10. When the operator operates the steering handle 10, the front wheels 6 and 6 are steered to change the traveling direction. A pillar 11 extends upward from a rear portion of the frame 3, and front ends of a pair of upper and lower links 12 and 12 are rotatably attached to this. Vertical mounting frame 1
3, the rear ends of the links 12 and 12 are rotatably attached,
The swing of the links 12, 12 allows the mounting frame 13 to move vertically while maintaining the same posture. Hydraulic cylinder 14
Has a front end rotatably attached to the frame 3, a piston rod 15 projecting obliquely upward from this, and the projecting end is connected to the lower end of an arm 16 integral with the upper link 12,
When oil is supplied to the hydraulic cylinder 14, the piston rod 1
5, the mounting frame 13 rises, and when the oil is returned to the tank, the piston rod 15 is pulled back and the mounting frame 13 descends.

The seedling planting device 2 is constructed as shown in FIGS. 1, 2 and 3. That is, the seedling planting gear box 17 is provided on the lower portion of the mounting frame 13 so as to be swingable right and left by the rolling shaft 18. A seedling stand 19 which is inclined forward and upward is arranged thereon. Four mat seedlings are placed side by side on the seedling placing table 19. Then, both ends of the laterally moving rod 20 which protrudes leftward and rightward from the seedling planting gearbox 17 and is reciprocally driven leftward and rightward by the power of the engine 8 are connected to the back surface of the rods 21 and 21 according to the lateral width of the mat seedling. It is designed to move left and right depending on distance. The pair of covering cylinders 22, 22 is a seedling planting gearbox 17
From the tip of each seedling planting case 23, 2
3 extends below the seedling mounting table 19 and extends rearward. An L-shaped seedling receiving plate 24 is fixed to the seedling planting cases 23, 23 to block the outlet of the seedling mounting table 19. A pair of columns 25, 2
5 extends upward from the front end of the seedling planting case 23, 23, and the horizontal rod 2
Both ends of 6 are fixed to the respective upper ends. Rail 2
7 is laterally fixed to the rear surface of the seedling mounting table 19, and the sliders 28, 28 attached to the horizontal rod 26 are engaged with this, so that the seedling mounting table 19 is slidably supported to the left and right. 4 rotating cases 2
, 29 are arranged on both sides of the rear ends of the seedling planting cases 23, 23, and a pair of seedling planting rods 30, 30, ... Are attached to each of them to form a four-row planting. Seedling plant 30,30 ……
When the rotating cases 29, 29 are rotated around the horizontal axis by the power of the engine 8, the rotating cases 29, 29 turn in the same posture, and the pair of front and rear alternately alternates in the middle of descending. The seedling for one strain is cut off from the end of the mat seedling that has passed through the above, and is transplanted to the mud at the lower end. The center float 31a and the pair of side floats 31b, 31b are arranged side by side and slide on the mud surface by the forward movement of the traveling vehicle body 1, and the lateral overhanging portions preliminarily level the mud surface on which the seedlings are transplanted. It is like this.

The automatic rolling mechanism of the seedling planting device 2 is shown in FIG.
It is configured as shown in FIGS. That is, the horizontal sensor 32 is attached to the seedling planting gear box 17, and when the seedling planting device 2 is tilted to the left or right, the horizontal sensor 32 is configured to output the control device 33. The motor 34 is fixed to the mounting frame 13 and is operated by a command from the control device 33. A sector gear 35 is rotatably attached to the attachment frame 13 by a central shaft 36 and meshes with a gear 37 of the motor 34. Arm 3
8 extends upward from the sector gear 35 and a pair of pull-back springs 3
Both ends of 9, 39 are hooked on the tip of the arm 38 and the side of the seedling stand 19. Then, when the seedling table 19 on which the mat seedlings are placed is pushed by the lateral movement rod 20 and moved to the right or left in FIG. 3, the center of gravity of the seedling planting device 2 shifts to the right or left, and this descends to the right or Although an attempt is made to incline to the left, the pullback springs 39 on the left or right side act to pull back the laterally moved seedling stand 19 to prevent the above inclination.

A pair of mounting pieces 38a, 38b are attached to the arm 38.
Of the left mounting piece 38
It is designed to be moved to the left and right when it is screwed into a and turned with a knob 40a. The adjusting screw 40 is screwed into the lock nut 41, and when the adjusting screw 40 is turned, the adjusting screw 40 is fixed to the arm 38 by coming into contact with the inner surface of the right mounting piece 38b. Both ends of the pair of rolling springs 42, 42 are hooked on the outer ends of the adjusting screw 40 and the respective columns 25, 25, and when the arm 38 rotates clockwise or counterclockwise, the left or right rolling spring 42 is The seedling planting device 2 is arranged to move around the rolling shaft 18 in the moving direction.

Therefore, the seedling planting device 2 is tilted to the left and right of the traveling vehicle body.
When the plant is tilted to the side, the motor 34 is driven by the command of the control device 33 which receives it by the detection of the horizontal sensor 32, the arm 38 is rotated, and one side of the rolling spring 42 is pulled up to pull up the seedling planting. The device 2 returns horizontally. It should be noted that the adjustment of the strength of the pair of rolling springs 42, 42 has conventionally been performed individually on the left and right, so the operation is complicated, but according to the above configuration, this is completed with the single adjustment screw 40. Therefore, the adjustment work becomes extremely easy.

The pole removing device 43 is constructed as shown in FIGS. That is, the horizontally long arm stay 44
Is arranged under the front frame 45 of the traveling vehicle body 1 and can be moved up and down by a hydraulic cylinder 46. A pair of arms 47, 47 are arranged above and below the arm stay 44 and can be rotated around shafts 48, 48 at their outer ends by a motor (not shown). A pair of chucks 49, 49 opened and closed by a motor, a solenoid, etc. are attached to the ends of the respective arms 47, 47. And
When the arms 47, 47 are folded above and below the arm stay 44, the chucks 49, 49 face forward on the center line of the traveling vehicle body 1.

Further, after the rice transplanter that has advanced the outward path 50 of the rice field A of FIG. 5 makes a U-turn at the headland B to face the inward path 51, the left arm 47 is rotated 180 degrees around its axis 48. Then, the chuck 49 is designed to come to the center of the next outward path 52. Therefore, the operator or assistant
At the beginning of planting, the pole 53 is inserted into the headland B at the end of the first outward path 50 and the headland of the return path 51 (the right headland and the pole are not shown in the figure). Rice transplanter planting seedlings while going out 50
When reaching the pole 53, the chuck 49 of the left arm 47 grips the pole 53. Next, the arm stay 44 is pulled up by the hydraulic cylinder 46, and the pole 53 thereof is pulled up from the ground. Subsequently, the rice transplanter makes a U-turn toward the return path 51, the left arm 47 is rotated 180 degrees around its axis 48 to project outward, and the ascending arm stay 44 is pushed down by the hydraulic cylinder 46. Then, the previous pole 53 is inserted into the ground at the position of 53a. After that, the chuck 49 is opened, the arm 47 is returned to the original position, the operation is restarted, and the arm 47 is advanced toward the above-mentioned pole inserted in the right headland. When the rice transplanter reaches the pole, the same work as above is repeated, and the rice transplanting work is continued in the same manner.

A camera 54 capable of image processing is mounted on the traveling vehicle body 1.
If it is provided in the front part of the device and is configured so as to catch the front pole 53 and operate the automatic steering device, an automatic straightening device of the rice transplanter can be obtained. If a limit switch is installed on the chuck 49, 49 or its vicinity and the pole 53 hits this,
The chuck 49 may be configured to automatically close and pull up the pole 53.

As shown in FIG. 6, the pole 53 has a ring 55.
Consists of a steel pipe with a battery 56 at the bottom,
The light emitting marker 57 and the radio wave transmitter 58 which operate by this can be provided at the upper end. Then, when the rice transplanter reaches a position of 2 m, for example, the vehicle speed may be reduced. When the rice transplanter is equipped with a gyro sensor, a back sensor, etc., and the lateral displacement between the rice transplanter that has completed the U-turn in the headland B and the front pole 53 is less than the limit, the displacement is increased while the seedling is being advanced. If the correction is made and the value is above the limit, the rice transplanter may be retracted once and then the deviation may be corrected.

[Brief description of drawings]

FIG. 1 is a side view of a rice transplanter according to the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is an enlarged front view of part 1 thereof.

FIG. 4 is an enlarged front view of part 1 thereof.

[Figure 5] Working diagram of the rice transplanter

FIG. 6 is a perspective view showing another embodiment of the pole.

[Explanation of reference numerals] 1 traveling vehicle body 43 pole slipping device 50 forward path 51 return path 52 next forward path 53 pole A rice field B headland

Claims (1)

[Claims] 1. A pair of poles 53, which are the targets for straight traveling of the traveling vehicle body 1, are inserted in the headland B on the left and right of the rice field A or in the vicinity thereof on the traveling path of the traveling vehicle body 1, and the traveling vehicle body 1 travels on the outward route 5.
When the poles 53 reach the respective poles 53 on the 0 and the return path 51, the poles 53 are pulled out, and the pole slipping devices 43 to be inserted into the headland B on the course at the center of the traveling vehicle body 1 on the next forward path 52 or the return path or in the vicinity thereof. A rice transplanter driving device installed at the front of the vehicle body.