JPH078026A - Rice transplanter equipped with fertilizer applicator - Google Patents

Abstract

PURPOSE:To carry out satisfactory fertilization by suitably opening or closing a shutter attached to the upper part of a furrow opener and preventing over fertilizing at a planting stop position or short fertilizing at a planting start position even if the planting operation is stopped or restarted under any condition. CONSTITUTION:A driving mechanism 21 for opening or closing a shutter is linked to a device for detecting a connection-disconnection operation of the main clutch and a planting clutch. If detecting a state where both the main clutch and the planting clutch are connected, the shutter 20 is allowed to perform a low-speed opening motion. If detecting a state where at least one of the main clutch and the planting clutch is disconnected, the shutter 20 is allowed to perform a high-speed closing motion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter equipped with a fertilizer application apparatus, which is adapted to apply fertilizer at the same time as seedling planting work.

[0002]

2. Description of the Related Art A fertilizer application device for rice transplanters uses a hose to guide the granular fertilizer fed by a feeding mechanism from a hopper, and supplies it downward to a grooving device mounted on a float to form a fertilizing groove formed by the grooving device. While configuring to send in,
Many of those in which the feeding mechanism and the planting mechanism are interlockingly connected are often used. With this configuration, the operation of the planting mechanism and the operation stop of the feeding mechanism can be synchronized,
There is an advantage that fertilizer can be supplied without waste only during planting operation.

However, in this structure, since it takes some time for the fertilizer fed by the feeding mechanism to reach the grooving device, strictly speaking, even if the feeding is stopped, the fertilizer is immediately stopped in the fertilizer ditch. No fertilizer was supplied to the fertilizer ditch immediately after the start of feeding. As a result, when the planting clutch was disengaged and the planting operation was stopped in order to change the direction of the car body at the ridge after finishing the planting run for one stroke, the fertilizer was supplied to the headland without planting seedlings due to the delay in stopping the fertilizer. In addition, when the planting clutch is engaged to start the planting run in the next stroke after finishing the direction change, conversely, the fertilizer flow to the groover is delayed with respect to the planting operation. Therefore, fertilization is not applied to the seedlings near the beginning of the planting strip.

Therefore, as means for solving such a problem, for example, as disclosed in Japanese Patent Laid-Open No. 63-304915, a shutter provided on the upper part of the grooving device is interlocked with the disengagement operation of the planting clutch. A means has been proposed in which a high-speed closing operation is performed and a low-speed opening operation is interlocked with the engagement operation of the planting clutch. According to this configuration, the shutter is rapidly closed in conjunction with the stop of the seedling planting device, the fertilizer flowing down the downflow path is received by the shutter, and the supply to the groover is stopped, and the seedling planting is also stopped. The shutter opens at low speed in conjunction with the activation of the device, and the fertilizer received by the shutter gradually flows down into the groover.
In other words, the seedlings near the beginning of the planting strip in the next stroke can be supplied with the surplus fertilizer that was delivered and temporarily held at the end of the previous stroke.

[0005]

However, with the above proposed structure, the desired function can be expected at the time of turning the aircraft at the edge of the ridge, but in actual work it may not always be possible to obtain satisfactory results. There was room for improvement in practical application. That is, in the actual work, when supplying seedlings to the seedling planting device during planting, the driving operator disengages the main clutch to stop the traveling and planting operations. That is, since the main clutch is located at the upper side of the traveling transmission system and the planting transmission system, it is possible to stop both the traveling and the planting operation simply by turning off the main clutch without turning off the planting clutch. Therefore, in the configuration in which the shutter opening / closing drive mechanism is linked only to the planting clutch, the shutter is not closed even if the main clutch is disengaged, and excessive supply of fertilizer occurs at the stopped position and after the seedling supply is completed. However, there was a delay in fertilizer supply when planting started.

The present invention has been made paying attention to such a point, and the opening and closing operation of the shutter adapted to the actual work is performed so that the planting work is stopped and restarted under any circumstances. The purpose is to prevent excessive supply of fertilizer at the planting stop location and shortage of fertilizer at the planting start location so that good fertilization can be performed.

[0007]

To achieve the above object, the present invention is characterized in that fertilizer is constructed so that a granular fertilizer fed from a hopper by a feeding mechanism is guided by a hose and fed down to a grooving device. The device is connected to a seedling planting device, the feeding mechanism and the planting mechanism are interlockingly connected, and a shutter for closing and urging is provided on the upper part of the grooving device, and a shutter for closing the shutter at high speed and opening at low speed. In a rice transplanter with a fertilizer application having an opening / closing drive mechanism, the shutter opening / closing drive mechanism is linked with a means for detecting the on / off operation of the main clutch and the planting clutch, and the clutch engagement state of both the main clutch and the planting clutch is detected. Then, the shutter is opened slowly and at least one of the main clutch and the planting clutch is activated. When one clutch disengaging condition is detected is the shutter in that are configured to rotate at high closing operation.

[0008]

According to the above structure, when the aircraft is turned at the edge of the ridge where one planting run has been completed, only the planting clutch is turned on and off. The shutter closes at high speed and catches the fertilizer that is flowing down. When the planting clutch is disengaged after turning the aircraft, the shutter opens at low speed, and the fertilizer received by the shutter is gradually supplied. Also, during the planting run, even if the main clutch is disengaged to stop seedling replenishment, etc., and the running and planting operations are all stopped, the shutter closes at high speed and the main clutch is restarted to resume work. When the shutter is turned on and off, the shutter opens at low speed.

[0009]

Therefore, according to the present invention, it is possible to prevent an excessive supply of fertilizer at the planting stop location and a shortage of fertilizer at the planting start location, regardless of the situation where the planting work is stopped and restarted. Fertilization is now possible.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a riding type rice transplanter with a fertilizer application apparatus according to the present invention. This rice transplanter connects a seedling planting device 3 to a rear portion of a passenger traveling vehicle body 1 via a link mechanism 2 so as to be able to move up and down, and to the seedling planting device 3 to a fertilizer application device 4.
It has a structure equipped with.

As shown in FIG. 2, the seedling planting device 3
Is a square pipe-shaped main frame 5 connected to the rear end of the link mechanism 2, a planting transmission case 6 connected and supported by the main frame 5, and a plurality of seedlings W are placed and reciprocated left and right. Seedling stand 7, three planting cases 8 connected in parallel to the rear surface of the main frame 5 to receive power from the planting transmission cases 6, and a rotary planting mechanism 9 provided at the rear end of each planting case 4. It is composed of three ground leveling floats 10 and the like, which are located at the lower part of each planting case 8 and the like, and the fertilizer application device 4 is equipped at the rear part of the seedling planting device 3.

The fertilizer applicator 4 comprises a hopper 11 for storing powdered and granular fertilizer, a rotary roll type feeding mechanism 12 provided under the fertilizer, a grooving device 13 attached to each float 10 for each planting line, and a feeding mechanism. It is composed of a hose 14, etc., which guides the fertilizer fed out at 12 and guides it to the groove making device 13. Then, the feeding roll shaft 12a of the feeding mechanism 9 and the planting mechanism 9 are interlockingly coupled via a push-pull rod 15 and a gear mechanism 16 that perform an eccentric crank motion, and the starting and stopping of the planting mechanism 9 and the feeding mechanism 9 are performed. The start and stop are synchronized with each other. Therefore, when the planting clutch (not shown) interposed in the power transmission system from the passenger traveling vehicle body 1 to the planting transmission case 6 is inserted, the planting operation and the fertilizer feeding operation are started in synchronization, and when the planting clutch is disengaged, the planting operation is started. The fertilizer feeding operation is stopped synchronously.

Incidentally, the hopper 11 and the feeding mechanism 1
2 is supported so as to be able to move up and down along a guide rail 17, and is normally located at a lower position as shown in the drawing so that the feeding mechanism 12 and the hose 14 are connected for communication and the feeding mechanism 12 and the planting mechanism 9 are connected. It is linked with the rod,
When performing various operations such as taking out the seedling W remaining under the seedling stand 7, adjusting the planting mechanism 9, cleaning the inside of the hose 14, and the like, while separating the lower end of the feeding mechanism 12 and the hose 14, The rod connection between the feeding mechanism 12 and the planting mechanism 9 is released, and the hopper 11 and the feeding mechanism 1 are released.
By moving 2 upward, the lower rear part of the seedling stand 7 is largely opened so that various operations can be performed easily.

As shown in FIG. 3, a shutter 20 for opening and closing the fertilizer flow-down path is mounted in the upper part of each grooving device 13 so as to be vertically swingable around a fulcrum a, and from the shutter fulcrum shaft 20a. The projecting operation arm 20b is interlockingly connected to an electric shutter opening / closing drive mechanism 21 provided at a fixed portion of the seedling planting device 3 via a linkage rod 22. As shown in FIGS. 9 (a) to 9 (c), in each case of four-row planting, five-row planting, and six-row planting, the linkage rods 22 are provided one by one in float units, and It is interlockingly connected to a single shutter opening / closing drive mechanism 21 common to the shutters.

The shutter opening / closing drive mechanism 21 is constructed as follows.

An operating shaft 23, which is common to all the rows, is rotatably mounted on the lower portion of the main frame 5 so as to be rotatable about a horizontal axis b, and an operating arm 23a projecting from the operating shaft 23 is provided with a front end of each connecting rod 22. Are connected to each other, and the operating lever 23b extending from the operating shaft 23 is biased by the spring 24 to rotate the operating shaft 23 in the counterclockwise direction. Is closed, and the operating lever 23b is rotated clockwise against the spring 24, whereby all the linkage rods 22 are pulled forward and all shutters 20 are opened. .

An arm-shaped lock member 26 is loosely fitted and mounted on a rotary shaft 25 which is rotatably provided around a horizontal axis c in the front upper portion of the operating shaft 23, and a tip end portion of the lock member 26 is The tip end pin 23c of the operating lever 23b in the shutter open position (open) is engaged from above to prevent the operating lever 23b from being urged and rotated in the counterclockwise direction, so that all the shutters 20 are held in the open posture. It is like this.

The operating lever 26a integral with the lock member 26 and the electromagnetic solenoid 27 are interlockingly connected with each other through the interlocking metal fitting 28, and when the electromagnetic solenoid 27 is energized, as shown in FIG. Is moved to the left in the figure and the operation lever 26a is rotated counterclockwise, whereby the lock member 26 is driven and rocked upward, whereby the lock of the operating lever 23b is released, and all the shutters 20 are spring-loaded. The urging force of 24 instantly closes and operates.

As shown in FIGS. 6 and 8, the rotary shaft 25 has an electric motor 30 through a worm speed reduction mechanism 29.
Is connected to and is driven to rotate counterclockwise in the drawing at a low speed, and a cam member 31 for driving the shutter opening is fixed to the rotation shaft 25. Further, the rotary shaft 25 is
The cam member 31 is set to be driven one rotation at a time, with the position in which the cam member 31 is in the downward posture as an initial set position s.
When the cam member 31 rotates counterclockwise from the set position s, the operating lever 23b at the shutter closing position (closed) is forcedly rotated clockwise at a low speed due to abutting interference with the pin 31a, and the operating lever When the shutter 23b reaches the shutter open position (open), the lock member 26 is rotated downward by the spring 32 acting on the coupling fitting 28 to perform the lock operation.

As shown in the circuit diagram of FIG. 10, the electromagnetic solenoid 27 and the electric motor 30 of the shutter opening / closing drive mechanism 21 are a main clutch switch S1 which is switched as the main clutch of the passenger traveling vehicle body 1 is operated. , The planting clutch S that is switched according to the planting clutch operation
2 is linked and connected, and the operation is controlled as follows in cooperation with the operation of these clutches.

In the initial state in which both the main clutch and the planting clutch are disengaged, the operating lever 23b is in the shutter closed position (closed), and at this time, the normally open contact S1a of the main clutch switch S1 and the planting clutch switch S2 are normally closed. The open contacts S2a are both open. In addition, LS in FIG. 10 is a limit switch that is operated and opened when the cam member 31 is at the set position st.

When the power switch Sw is turned on, the electromagnetic solenoid 27 and the first relay R1 provided in the solenoid drive circuit z are energized for a fixed time set by the timer T, and the first relay contact R1a is closed. This makes the second
The relay R2 is energized and the second relay contact R2a is closed,
This relay drive circuit r is held by itself. The relay drive circuit r is provided with the third relay R3, and the bypass circuit y of the motor drive circuit x is established by closing the third relay contact R3a.

In this state, even when only one of the main clutch and the planting clutch is engaged and operated, the normally open contact S1
Only by closing either a or the normally open contact S2a, the shatter electric motor 30 is not energized and started.

When the main clutch and the planting clutch are both engaged and operated, the normally open contacts S1a and S2a are opened.
Are closed together and the electric motor 30 is energized and activated via the bypass circuit y, and operates as described above to operate all shutters 20.
Is driven to open and locked in the open position. That is, the shutter 20 is not opened until the planting traveling state is reached, and the fertilizer is supplied to the grooving device 13. By this operation, both the normally closed contact S1b of the main clutch switch S1 and the normally closed contact S2b of the planting clutch switch S2 are opened. Further, the electric motor 30 is energized to drive the cam member 31 out of the set position st to close and return the limit switch LS, and the fourth relay R4 provided in the motor drive circuit x is energized to turn on the fourth relay contact ( (Normally closed) R4b is opened, and the self-holding of the relay drive circuit r is released. As a result, the energization of the third relay R3 is stopped, the third relay contact R3a is opened, the bypass circuit y of the motor drive circuit x is not established, and the electric motor 30 is driven by the motor drive established by closing and returning the limit switch LS. Energization continues through circuit x. And
When the cam member 31 makes one rotation and returns to the set position st, the limit switch LS is pressed and the motor drive circuit x
And the electric motor 30 is stopped.

When the planting clutch is disengaged in order to change the direction of the machine at the ridge after one planting run has been completed, only the normally closed contact S2b of the planting clutch switch S2 is closed, which causes the electromagnetic solenoid 27 to actuate the timer T.
Then, the shutter 20 is instantly closed by the above-described lock release operation, and the fertilizer flowing down in the hose 14 is received by the shutter 20. Further, even when the main clutch is disengaged to stop seedling replenishment or the like and the traveling and planting operations are all stopped in the middle of the planting traveling, the normally closed contact S1 of the main clutch switch S1.
Only b is closed, the electromagnetic solenoid 27 is energized for a fixed time, the unlocking operation is performed, and all the shutters 20 are instantly closed.

Further, as the electromagnetic solenoid 27 is energized for a certain period of time, the relay drive circuit r is self-held as described above, and the third relay contact R3a is closed, whereby the bypass circuit y of the motor drive circuit x is changed. To establish. That is,
The next motor drive is ready.

When the vegetation clutch is turned on and operated to complete the vegetation traveling in the next stroke after completing the direction change of the vehicle at the ridge, all the shutters 20 are opened at a low speed because the energization condition of the electric motor 30 is satisfied. The fertilizer received by the shutter 20 gradually flows down into the grooving device 13. In other words, the seedlings near the beginning of the planting strip in the next stroke are supplied with the surplus fertilizer that was delivered and temporarily withheld at the end of the previous stroke.

Also, in the middle of the planting traveling, when the main clutch is disengaged to stop the traveling and planting operations to replenish the seedlings, the main clutch is operated again to return to the planting traveling, The fertilizer received by the shutter 20 gradually flows down into the grooving device 13, and the delay in the fertilizer supply at the early stage of recommencement of planting is alleviated.

Since the float 7 is pivotally connected to the rear end of the float support arm 32 whose vertical swing can be adjusted around the fulcrum d, the float 7 is adjusted to adjust the planting depth.
As you move up and down, a certain shutter open position (open)
The position of the shutter fulcrum shaft 20a changes back and forth with respect to the actuating arm 23a and the actuating lever 23b, which causes the shutter 20 to rotate relatively, but as shown in FIG. In order to obtain a shutter opening that does not prevent fertilizer from flowing even in the shallowest planted condition,
As shown in FIG. 5, in the deepest planted state in which the float 7 is fully raised, the shutter 20 is largely opened.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter with fertilizer application

[Figure 2] Side view of the seedling planting device

FIG. 3 is a side view of a main part in a shutter open state at the time of shallowest planting.

FIG. 4 is a side view of a main portion of the shutter closed state at the time of the shallowest planting.

FIG. 5 is a side view of the shutter release state of the main part at the time of deepest planting.

FIG. 6 is a plan view of a shutter opening / closing drive mechanism.

FIG. 7 is a side view showing a state where the shutter opening / closing drive mechanism is in the middle of operation.

FIG. 8 is a side view showing a part of a shutter opening / closing drive mechanism.

FIG. 9 is a schematic plan view showing a linkage configuration corresponding to various models. (A) Application example to 4-row planting machine (b) Application example to 5-row planting machine (c) Application example to 6-row planting machine

FIG. 10 is an electric circuit diagram that controls the operation of the shutter opening / closing drive mechanism.

[Explanation of symbols]

 3 Seedling planting device 4 Fertilizer application device 9 Planting mechanism 11 Hopper 12 Feeding mechanism 14 Hose 20 Shutter 21 Shutter opening / closing drive mechanism

Claims (1)

[Claims] 1. A feeding mechanism (1) from a hopper (11).
The fertilizer application device (4) configured to guide the powdery granular fertilizer fed out by 2) by the hose (14) and supply it to the grooving device (13) is connected to the seedling planting device (3), and is fed out. The mechanism (12) and the planting mechanism (9) are interlockingly connected to each other, and a shutter (20) which is closed and biased is provided on the upper part of the grooving device (13).
0) A rice transplanter with a fertilizer application, which has a shutter opening / closing drive mechanism (21) for performing a high-speed closing operation and a low-speed opening operation, a means for detecting the shutter opening / closing drive mechanism (21) and an on / off operation of a main clutch and a planting clutch. The shutter (20) is opened at a low speed when both the main clutch and the planting clutch are detected to be in the clutch engagement state, and the shutter is released when at least one of the main clutch and the planting clutch is disengaged. (20) A rice transplanter with a fertilizer application, which is configured to close and operate at high speed.