JPH06141637A - Seeding planting machine - Google Patents

Abstract

PURPOSE:To provide a seedling planting machine favorably maintaining the stability of the planting device and enabling good seedling planting work to be made without being much influenced by muddy water. CONSTITUTION:This seedling planting machine is equipped with a central ground leveler A at the center of the machine body to level planting sites (a) of three or more rows and a leveling rake B within the lateral width of the ground leveler A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling planting machine capable of improving ground leveling performance and performing a good seedling planting operation.

[0002]

2. Description of the Related Art As a conventional technique of this kind, as shown in Japanese Utility Model Publication No. 58-4407, a seedling provided with a central part grounding body for leveling four planting positions in the central part of the machine body There is a planting machine. If a wide ground leveling float is provided in the central portion of the airframe in this way, the stability of the planting device with respect to ground is improved and the planting performance is improved. However, there was a problem in a deep-drained field that a wide leveling float pushed the water to the left and right to overwhelm the planted seedlings.

[0003]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention provides a central part leveling body A for leveling three or more planting positions a ... This is a seedling planting machine characterized in that a ground leveling rake part B is provided within the left and right width of the central ground leveling body A.

[0004]

According to the present invention, since the ground leveling rake part B is provided within the left and right width of the central part ground leveling body A, the ground leveling rake part B is maintained in a state where the stability of the planting device is maintained well. Therefore, it is possible to properly solve the problem that the seedling is pushed down by flowing the muddy water well while arranging the ground.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An eight-row planting type rice transplanter, which is a kind of seedling transplanter according to an embodiment of the present invention shown in the drawings, will be described below. Reference numeral 1 denotes a riding type vehicle body, and the machine body is configured by connecting a transmission case 2 arranged at the front part and a rear wheel transmission case 3 arranged at the rear part of the machine body by a frame 4. Left and right front axle cases 5 and 5 are fixed to the left and right sides of the rear of the transmission case 2, and left and right steering drive front wheels 6 are attached to the lower portions of the left and right front axle cases 5 and 5.
・ 6 is provided.

The rear wheel transmission case 3 has a main case 3a fixed to the frame 4 and left and right cases 3b, 3 having bases fixed to both left and right sides of the main case 3a and extending rearward.
It is configured in a U shape in a plan view with b. Reference numerals 7a and 7a denote left and right driving rear wheels, which are mounted on the outside of the left and right cases 3b and 3b, respectively.

Reference numerals 7b and 7b are left and right auxiliary drive wheels,
The left and right cases 3b, 3b are respectively mounted on the inner side of the case, and have a smaller diameter than the left and right driving rear wheels 7a, 7a. 8
Is an engine and is mounted on the upper part of the rear wheel transmission case 3, and the power is transmitted from the engine 8 to the mission case 2 in the front part of the machine body, and the left and right front axle cases 5 are transmitted from the transmission case 2 via the front wheel differential mechanism. The power is transmitted to the left and right steering drive front wheels 6 and 6 by the transmission shaft in 5 and is further transmitted to the rear wheel diff mechanism 10 in the main case 3a of the rear wheel transmission case 3 via the transmission shaft 9 in the frame 4. Is transmitted from the rear wheel differential mechanism 10 to the left and right rear wheel shafts 13 and 13 via the left and right rear wheel drive shafts 11 and 11 and the transmission chains 12 and 12 in the left and right cases 3b and 3b. Ring 7
a, 7a and left and right auxiliary drive wheels 7b, 7b are configured to be driven.

Reference numeral 10a denotes a diff lock device for the rear wheel diff mechanism 10, which is in a non-operating state in which the left and right rear wheel drive shafts 11 and 11 are differentially rotated and a diff lock action in which the left and right rear wheel drive shafts 11 and 11 are integrally rotated. It is configured so that it can be switched to the state. The diff lock device 10a is connected to the operation lever 29 so as to be in the diff lock operation state when the operation lever 29, which will be described later, is operated to the “ON” position so as to be in the diff lock state during the seedling planting work. ing. (In addition, the diff lock device 10a does not operate when the steering handle 19 is operated more than a predetermined amount to turn the machine body, when the left and right brake pedals are braked, when the seedling planting device 23 is lifted more than a predetermined amount. 15 and 15 are left and right side brakes provided on the left and right rear wheel drive shafts 11 and 11 in the main case 3a of the rear wheel transmission case 3, and are located in front of the engine 8. Step 16 provided in
The left and right side brakes are each activated by depressing each of the left and right brake pedals provided at the front part of the. That is, the driving of the rear drive wheels 7a and 7b on the side where the left and right brake pedals are depressed is stopped and the brakes are activated.

In the transmission case 2, a main transmission mechanism in which the rotational driving force of the engine 8 is changed by a main transmission lever 17 described later and a front wheel differential mechanism are built in. 1
Reference numeral 8 is a vehicle body cover molded by FRP, and an engine cover portion that covers the periphery of the engine 8 and steps 16 provided on the front and left and right sides of the engine 8 are integrally formed and fixed to the body. ing. And step 1
Reference numeral 6 extends from both left and right sides of the steering handle 19 to the front to form a left and right passage A.

Reference numeral 20 denotes a control seat, which is a body cover 18
Is attached to the top of the. Reference numeral 21 denotes a link mechanism composed of an upper link 21a and lower links 21b, 21b, the base end portion of which is pivotally attached to a support frame 22 extending above the rear wheel transmission case 3 to form a rear end. The rolling shaft 2 supports the seedling planting device 23 in a freely rolling manner.
It is pivotally attached to a vertical frame 25 provided with 4.

Reference numeral 26 is a hydraulic cylinder device in which the base of the cylinder is pivotally attached to the rear wheel transmission case 3 and the tip of the piston is pivotally attached to the upper link. Reference numeral 27 is a front cover formed of synthetic resin that covers the periphery of the handle post, and is fixed to the front upper surface of step 16,
Its upper surface is an operation panel provided with various display devices and meters. The main transmission lever 17 is provided on the left side of the front cover 27, and the belt type continuously variable transmission provided on the transmission system between the engine 8 and the transmission case 2 is provided on the right side of the front cover 27. An auxiliary shift lever 28 for operating the mechanism is provided.

Reference numeral 29 is a planting clutch operation and seedling planting device 2
3 is an operation lever for performing an up / down operation of the control seat 20
Is provided at a lateral position of. 30 is the front cover 27
Is a main clutch pedal provided on the left side of the. The seedling planting device 23 is a planted transmission case 3 which also functions as a frame which is mounted on the rolling shaft 24 of the vertical frame 25 in a freely rotatable manner.
1, a seedling table 34 that reciprocates in the lateral direction of the machine supported by a lower support member 32 and an upper support member 33 provided on the planted transmission case 31, and is mounted on the rear end of the planted transmission case 31. A seedling planting device 35 for splitting and planting seedlings one by one from the lower end of the seedling mount 34 and a rear part of the planting transmission case 31 which is pivotally supported by a shaft 36 in front thereof. It is a ground level body in which the part is mounted so that it can swing up and down.
It is composed of one leveling float 37a, 37b, 37c, 37d and the like.

Each leveling float 37a, 37b, 37c,
37d are arranged behind the rear drive wheels 7a, 7b, respectively, to level the field disturbed by the rear drive wheels 7a, 7b and to front the field where seedlings are planted by the seedling planting device 35. It is provided for leveling. A groove a through which mud flows backward is formed on the bottom side of each leveling float 37a, 37b, 37c, 37d, and a leveling rake body b is integrally formed of synthetic resin at the front end of the groove a. Is
A rake groove c is integrally formed on the upper wall of the groove a. Therefore, the mud surface roughened by the rear drive wheels 7a, 7b is leveled by the leveling rake bodies b of the leveling floats 37a, 37b, 37c, 37d, and the rake groove c, and mud flows backward. And the planting performance is good.

The leveling float 37b / 3 at the central portion
The front portion of 7c is vertically movably connected to each other by pivot pins 38a 'and 38a' provided on the left and right ends of the balance rod 38a in the longitudinal direction of the machine body, and fixed to the center portion of the balance rod 38a. A leveling rake 39a (leveling rake portion B) formed of a plate-like material is provided below the support pedestal 38b. On the other hand, the support pedestal 38b is supported on the planted transmission case 31 by a floating link mechanism 38c that allows the balance rod 38a to freely move in the vertical direction. The lower end of the leveling rake 39a is set to be higher than the bottom surface of the leveling floats 37b and 37c by H so that the mud flow is considered to be good.

Thus, the two leveled floats 3 in the central portion are
7b and 37c are connected by a balance rod 38a, and a leveling rake 39a is provided between the leveling floats 37b and 37c to form a central leveling body A. Reference numeral 38d denotes a hydraulic valve provided between the support pedestal 38b and the planted transmission case 31, and when both front portions of the grounding floats 37b and 37c are lifted by an external force beyond an appropriate range (the floating link mechanism 38c). Mission case 2)
The hydraulic pump mounted on the left side of the pump feeds the pressure oil pumped out of the mission case 2 into the hydraulic cylinder 26 to cause the piston to project and the link mechanism 21 to move upward to raise the seedling planting device 23 to a predetermined position. On the contrary, when the front parts of the leveling floats 37b and 37c both fall below the proper range (when the floating link mechanism 38c is expanded), the pressure oil in the hydraulic cylinder 26 is returned to the inside of the mission case 2 to link. The mechanism 21 is moved downward to lower the seedling planting device 23 to a predetermined position, and the ground leveling floats 37b and 37c.
When at least one of the front portions of the seedlings is in the proper range (when the seedling planting device 23 is in a proper predetermined position), the pressure oil in the hydraulic cylinder 26 is stopped from entering and leaving to hold the seedling planting device 23 in a fixed position. It is provided to make a difference.

Explaining the operation of the operation lever 29, the PTO clutch provided in the mission case 2 is operated so that power to the seedling planting device 23 can be turned on and off, and a hydraulic valve is provided. 38d is operated so that the seedling planting device 23 can be manually moved up and down. That is, when the operation lever 29 is set to the “fixed” position, the PTO clutch is disengaged, the operation of the seedling planting device 23 is stopped, and the hydraulic valve 38d stops the pressure oil from flowing in and out of the hydraulic cylinder 26 to keep the seedling planting device 23 at a fixed position. It is switched to a position for holding the seedling planting device 23, and the seedling planting device 23 does not move up or down. Then, when the operating lever 29 is operated downward to the "down" position, the PTO clutch is disengaged and the operation of the seedling planting device 23 remains stopped, but the hydraulic valve 38d is moved up and down by the leveling floats 37b and 37c. The automatic control state is switched. Then, when the operation lever 29 is further moved to the “ON” position, the PTO clutch is turned on to drive the seedling planting device 23 and the hydraulic valve 38d turns the leveling floats 37b and 37b.
The automatic control state is achieved by the vertical movement of c. On the contrary, when the operation lever 29 is operated forward to the "up" position, the PTO clutch is disengaged, the operation of the seedling planting device 23 is stopped, and the hydraulic valve 38d is forcibly switched to the side where the seedling planting device 23 is raised. Then, the seedling planting device 23 is raised.

39 is each leveling float 37a, 37b, 3
A leveling rake provided between 7c and 37d for leveling a field disturbed by the front and rear steering wheels 6 and 6 and leveling a field between each leveling float 37a, 37b, 37c and 37d. It is provided accordingly. Reference numeral 40 denotes a diff lock pedal of a front wheel diff mechanism in the transmission system of the left and right steering drive front wheels 6.

A indicates the position of each seedling planted by the eight seedling planting devices 35, and the seedling planting device 35 is provided between the rear wheels 7a and 7b to plant two seedlings. . Next, the rolling control mechanism 41 will be described.
Reference numeral 42 is an electric motor fixedly provided on the upper portion of the vertical frame 25. The base of a rotary arm 44 is fixed to the tip of a rotary drive shaft 43 of the electric motor 42, and the upper end of the rotary arm 44 and the plant. The spring 45 is provided between the left and right upper support members 33, 33 whose bases are fixed to the left and right parts of the transmission case 31.
Forty-five is laid up. As a result, the rotary arm 44 swings in the E-direction by the forward / reverse rotation of the rotary drive shaft 43 of the electric motor 42, and the seedling planting device 23 rolls with respect to the riding-type traveling vehicle body 1 via the springs 45, 45. It's ready to work.

Reference numeral 46 denotes a horizontal sensor provided at the center of the upper part of the planted transmission case 31 in the left-right direction of the machine body, and detects the left-right inclination of the seedling planting device 23 with respect to the horizontal as a change in the electric signal. The horizontal sensor 46 is provided in a case 47 in a state in which a weight 48 which descends and oscillates by its own weight is hung and supported so as to be swingable around a longitudinal axis 49, and the seedling planting device 2
When 3 tilts from the horizontal posture to the left or right over the set range, the reed switch 50 operated by the weight 48.
a and 50b are provided.

Then, both the reed switches 50a.5
0b is connected to the controller 51, and the forward rotation driving operation circuit 52a and the reverse rotation driving operation circuit 52b for the electric motor 42 are separately connected to the controller 51, so that the seedling planting device 23 is left above the set range. When tilted to one side, the electric motor 42 is operated in the normal direction to roll the seedling planting device 23 to the horizontal posture side. On the contrary, when the seedling planting device 23 is tilted to the right over the set range, the electric motor 42 is rotated. To perform a rolling operation to rotate the seedling planting device 23 to the horizontal posture side.

In short, even if the riding type vehicle body 1 tilts left and right due to the unevenness of the ground on which it comes in contact with the ground, the left and right tilting posture of the seedling planting device 23 is maintained within a set range near the horizontal posture. By doing so, the posture of the planted seedlings is made uniform, and the planting depth of each of the eight seedlings is also made uniform. On the other hand, when the operation lever 29 is operated to the “ON” position, a limit switch 53 is provided which is pushed and operated by the operation switch 29. The limit switch 53 is connected to the controller 51, so that the limit switch 53 is turned on. At a certain time (3
After a second), the rolling control state is set, and when it is turned off, the control is immediately stopped. That is, when the operation lever 29 is set to the “down”, “fixed”, and “up” positions, the limit switch 53 is turned off, the control output from the controller 51 is cut off, and the rolling control is no longer performed. At times other than the time of attachment, the control is operated unnecessarily to prevent the seedling planting device 23 from rolling. Then, when the operation lever 29 is operated from the "down" / "fixed" / "up" positions to the "on" position, the limit switch 53 is turned on, and the control output is output from the controller 51 after 3 seconds, and the seedlings are planted. Rolling control is performed during work.

As described above, the reason why the rolling control state is set after the fixed time (3 seconds) by turning on the limit switch 53 is that the seedlings are usually planted and the seedlings come to the edge. The planting device 23 is raised to rotate the machine body, and the seedling planting device 23 is lowered again to carry out the seedling planting work. However, the headland part at the beginning of the planting after the revolution is rough because the mud surface swirls the machine body. This is because the seedlings can be planted more neatly by planting while forcibly leveling the soil without rolling control, and the planting time for this headland is set to about 3 seconds.

If a main switch is provided as shown in the circuit diagram, the rolling control can be turned off when traveling on the road, etc., and stable traveling can be performed on the road. The riding type rice transplanter configured as described above is put in the paddy field, the seedlings are placed on the seedling placing table 34, the engine 8 is started, and the main shift lever 17 is set to the “planting speed” position to set the sub shift lever 28. Is set to the “high” or “low” position and the operation lever 29 is set to the “on” position to drive each part to move the machine forward, and the seedling planting device 23 is automatically controlled to move up and down and roll to the proper position. Work is done. At this time, the operation lever 2 is operated during seedling planting work.
9 is in the "ON" position, so the diff lock device 10
a is in the differential lock operation state, and the rear wheel differential mechanism 1
Since 0 does not rotate differentially and all the rear wheels 7a and 7b rotate in the same direction, the machine body has a good straightness and a seedling can be planted straight. Also, the four rear wheels 7a and 7b have a space of 2
Since it is installed at wide intervals so that row-by-row seedlings can be planted, its airframe support performance is good, and further, the rear wheels 7a and 7b.
There is little danger of picking up mud in the meantime, and very good driving performance is achieved, making it possible to perform proper rice planting work.

And when turning the aircraft at the edge,
When the operating lever 29 is set to the “up” position, the PTO clutch is disengaged, the operation of the seedling planting device 23 is stopped, and the hydraulic valve 38 is operated.
d is forcibly switched to the side where the seedling planting device 23 is raised and the seedling planting device 23 is raised, the diff lock device 10a becomes inactive, and the rear wheel diff mechanism 10 rotates differentially. Then, when the operator operates the steering handle 19 to turn the body, the left and right rear wheels 7a, 7b, 7a, 7b are appropriately differentially rotated, and can make a small turn without disturbing the mud surface of the field. Since the headland is not damaged so much, the headland planting work can be performed well. At the time of this turning, the operator operates the steering wheel 1
When the brake pedal on the turning side is depressed at the same time when 9 is operated, a smaller turn can be made.

Especially, since the two leveling floats 37b and 37c in the central portion are connected by the balance rod 38a and the leveling rake 39a is provided between the leveling floats 37b and 37c, the stability of the planting device 23 against ground is high. In this state, the muddy water is satisfactorily flowed backward while arranging with the leveling rake 39a, and proper rice planting work can be performed without being affected by the muddy water.

If the worker is a skilled worker, setting the sub-transmission lever 28 to the "high" position results in a high working speed, which improves the working efficiency. On the other hand, when traveling on the road, the operation lever 2
Since 9 is operated to the "fixed" position, the diff lock device 10a becomes inactive and the rear wheel diff mechanism 10 rotates differentially. Therefore, since the left and right rear wheels 7a, 7b, 7a, 7b rotate differentially, good road running can be performed.

FIG. 12 shows a central ground terrain body A showing a second embodiment.
And, it is composed of one ground leveling float formed to have a width capable of leveling the planting positions a ... A groove a through which mud flows backward is formed on the bottom surface side of the central portion of the groove a. The ground rake body b is integrally molded with synthetic resin at the front end of the groove a, and the upper wall of the groove a is formed. A rake groove is integrally formed in the rake. Then, the front part of the central ground body A is supported by a floating link mechanism 38c having a hydraulic valve 38d as in the first embodiment, and is configured to control the vertical movement of the seedling planting device 23. There is.

In the first embodiment, the operating lever 2
Although the limit switch 53 that is turned on and turned on is set to the rolling control state after a certain time (3 seconds), the limit switch 53 is turned on and the rolling control state is immediately set. You may. Further, the limit switch 53 is turned off so that the control is stopped after the rolling control state is maintained for a fixed time (about 3 to 10 seconds), and the control is continued for the fixed time (about 3 to 10 seconds). If the dead zone width is increased and the seedling planting device 23 is controlled and corrected only when the planting device 23 is largely tilted, the operation lever 29 is operated from the “ON” position to the “Up” position when turning the aircraft at the ridge. Then, when raising the seedling planting device 23, if the seedling planting device 23 is largely inclined, it can be corrected and the stability of the machine body is good. Further, when the rice planting work is completed and the plant leaves the field, when the operation lever 29 is operated from the “ON” position to the “UP” position to raise the seedling planting device 23, the seedling planting device 23 is largely inclined. In such a case, the stability of the aircraft can be improved and it is easy to leave the field, and the control will stop after a certain time (about 3 to 10 seconds). It is possible to prevent the rocking and to stabilize the running.

Further, although an example in which the present invention is applied to a riding type rice transplanter having a seedling planting device mounted on the rear portion of the riding type traveling vehicle body is shown, the present invention can be applied to any other seedling planting machine such as a walking type rice transplanter. You may implement.

[Brief description of drawings]

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

FIG. 2 is a plan view of a main part of a riding-type rice transplanter.

FIG. 3 is a front view of the main part for explaining the operation of the seedling planting device.

FIG. 4 is a front view showing an installation state of a leveling float and a leveling rake.

FIG. 5 is a perspective view showing how the ground leveling float is attached.

FIG. 6 is a plan view showing a positional relationship between a ground leveling float and driving rear wheels.

FIG. 7 is a front view of a leveling float.

FIG. 8 is an end view of the XX section of FIG.

FIG. 9 is a partially sectional front view of a horizontal sensor.

FIG. 10 is a circuit diagram of horizontal attitude control.

FIG. 11 is a side view for explaining the operation of the operation lever 29.

FIG. 12 is a plan view of a central ground leveling body A showing a second embodiment.

[Explanation of symbols]

 1 Riding type vehicle body 6 Steering drive front wheels 7a, 7b Drive rear wheel 21 Link mechanism 23 Seedling planting device 29 Operation lever A Central ground leveling body B Ground leveling rake part B Positioning position

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seike Rihaku, No. 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture, Engineering Department, Iseki Agricultural Machinery Co., Ltd. (72) Inventor Hiroyuki Niiyama, No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture Technical department (72) Inventor Hitoshi Yamazaki No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefectural Engineering Department, Iseki Agricultural Machinery Co., Ltd. Kamiya Hisashi, No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture, Technical Department, Iseki Agricultural Machinery Co., Ltd. (72) Inventor, Hideyuki Kusama, No. 1, Yakura, Tobe-machi, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. A planting position of three or more lines in the center of the airframe ...
A seedling planting machine is provided, in which a central ground leveling body A for leveling is provided, and a ground leveling rake section B is provided within the left and right width of the central ground leveling body A.