JPH11266635A - Rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter capable of reducing the extent of lifting of a planting device by seedling piecing and improving the seedling piecing efficiency. SOLUTION: This rice transplanter is obtained by installing plural mat supporting parts 51 for supporting seedling mats M at a prescribed interval kept in the upper and the lower parts in a reserve seedling-carrying platform 5 so as to be vertically movable and further a mat piecing plate 61 for lifting a planting device 2 so that a seedling-carrying platform 21 thereof is located at a seedling piecing position corresponding to the mat supporting part 51 in the lowermost stage of the reserve seedling-carrying platform 5 based on results of detection with a detector D for detecting the upward movement of the planting device 2 and transferring the seedling mat M of the mat supporting part 51 in the lowest stage to the seedling-carrying platform 21 at the seedling piecing position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter,
The present invention relates to a rice transplanter capable of automatically replenishing a seedling mat supported by a spare seedling mount to a seedling mount of a planting device.

[0002]

2. Description of the Related Art A rice transplanter capable of automatically replenishing a seedling mat with a seedling mounting table includes, for example, a seedling mounting table on which a seedling mat is mounted and a seedling mat mounted on a rear portion of a traveling machine provided with a driver's seat. A planting device provided with a planting section for taking out and planting the seedlings of the seedling mat placed on the mounting table, and a lifting device for raising and lowering the planting device are supported, and the seedling mat is placed on the seedling mounting table. A spare seedling mounting table to be replenished and a transfer mechanism for transferring a seedling mat supported by the spare seedling mounting table to the seedling mounting table are provided.

Further, the seedling mounting table is provided with a mat detector which operates when the seedling mat placed on the seedling mounting table is reduced to a predetermined amount, and the raising and lowering is performed based on the detection result of the mat detector. After operating the device, after raising the planting device to the uppermost position corresponding to the uppermost mat support portion of the spare seedling mounting table,
By operating the transfer mechanism, the seedling mat supported by the spare seedling mounting table is automatically transferred to the seedling mounting table for replenishment.

[0004]

However, in the conventional rice transplanter, the seedling mat is replenished after the planting device is raised to the uppermost position corresponding to the uppermost mat support portion of the spare seedling mounting table. Therefore, it is not possible to replenish the seedling mat until the planting device rises to the uppermost position after the mat detector operates, and
There was a problem that the descent time to the planting position was also long, and the efficiency of seedling connection was poor as a whole.

The present invention has been made in view of the above-mentioned circumstances, and raises a planting device to a seedling splicing position corresponding to a lowermost mat support portion of a spare seedling mounting table. It is an object of the present invention to provide a rice transplanter capable of improving seedling connection efficiency by reducing the amount of rise of a planting device caused by the above.

[0006]

In the rice transplanter according to the first aspect of the present invention, a planting section for taking out and planting seedlings of a seedling mat supported on a seedling mounting table is provided at the rear of a traveling machine body provided with a driver's seat. A spare supporting the planting device provided so as to be able to ascend and descend, and a mat supporting portion for supporting a seedling mat to be replenished to the seedling mounting table is provided so as to be vertically movable at predetermined intervals vertically. In a rice transplanter, comprising: a seedling mounting table; and a mat transfer means for transferring a seedling mat of the mat support section to the seedling mounting table at a seedling splicing position corresponding to the mat support section. It is characterized in that it is provided with a seedling raising means for raising the mounting table so as to be at a seedling connecting position corresponding to the lowermost mat support portion.

In the first invention, when the seedling mat supported by the seedling mounting table is reduced to a certain length, the planting device is raised. When the planting device rises upward with respect to the water surface of the field, that is, when the replenishment start end of the seedling platform rises to the seedling splicing position corresponding to the lowermost mat support portion of the spare seedling platform. Stop raising the attachment device. In this state, the mat transfer means operates to automatically replenish the seedling mat at the bottom of the spare seedling mounting table from the replenishment start point of the seedling mounting table to the seedling mounting table. In this way, the seedling mat can be replenished without raising the seedling mounting table to the uppermost position of the elevating range by the elevating device. Can be improved.

In the rice transplanter according to a second aspect of the present invention, the mat transfer means includes a mat splicing plate for inheriting the seedling mat supported by the lowermost mat supporting portion, and the mat splicing plate being fed laterally toward the seedling mounting table. And a collecting means for collecting an empty mat supporting portion after transferring the mat to the mat joining plate and collecting the empty mat supporting portion below the mat joining plate.

According to the second aspect of the present invention, the lowermost mat support portion can be recovered by passing through the mat joint plate disposed below the mat support portion. The seedling mat supported by the support portion can be successfully transferred to the mat joining plate, and the transferred seedling mat can be transferred to the starting point of replenishment of the seedling mounting table without fail. Can be replenished.

In a rice transplanter according to a third aspect of the present invention, the seedling mounting table and the spare seedling mounting table are capable of laterally moving the traveling machine body in the left-right direction, and a direction detecting means for detecting a lateral movement direction of the seedling mounting table. When,
A position detector for detecting the lateral movement amount of the seedling mounting table and a detector for detecting the lateral movement amount of the spare seedling mounting table are provided.

According to the third aspect of the present invention, when it becomes necessary to replenish the seedling mat with the seedling mount due to the lateral movement of the seedling mount and the planting operation by the planting section, the seedling mount is detected by the direction detecting means. Can be automatically detected, the spare seedling mounting table can be moved to a position where seedling replenishment is required based on the detected value, and the seedling mat can be satisfactorily replenished.

In a rice transplanter according to a fourth aspect of the present invention, the seedling mounting table, the spare seedling mounting table, and a plurality of planting sections are provided corresponding to a plurality of planting strips, and at least one of the planting sections is provided. And a seedling mat replenishing means for automatically replenishing the seedling mat of the spare seedling mounting table to the seedling table corresponding to the planting section operated by the clutch. It is characterized by.

According to the fourth aspect of the present invention, a seedling mat can be supplied to the seedling mounting table corresponding to the planting section activated by the clutch, and the seedling mat can be supplied to the planting section deactivated by the clutch. The seedling mat can be prevented from being supplied to the seedling mounting table. Therefore, even if the seedling mat of the seedling table corresponding to the planting section that is deactivated by the clutch is reduced to a certain amount or more, the seedling mat is not replenished to this seedling table,
When the seedlings of the seedling mat that has decreased by more than a certain amount can minimize the collapse of the mat due to the weight of the replenished seedling mat and the exudation from the seedling removal part, and restart planting Planting system can be improved.

According to a fifth aspect of the present invention, there is provided a rice transplanter, wherein the seedling mounting table comprises:
A mat mounting portion capable of supporting a plurality of seedling mats in series toward the planting portion is provided, and a first mat detector for detecting a decrease in the seedling mat is provided at an intermediate position between the mat mounting portions. It is characterized by having.

According to the fifth aspect of the present invention, the operation of the first detector provided at an intermediate position of the mat placing portion makes it easy for the operator to grasp the timing of seedling replenishment and the current remaining amount of the seedling mat.

A rice transplanter according to a sixth aspect of the present invention is provided with a second detector for detecting a decrease in the seedling mat at a position on the planting portion side of the mat support portion, and when the first and second detectors operate, a standby device is provided. It is characterized in that a mat feed mechanism for laterally feeding the seedling mat of the seedling mounting table toward the seedling mounting table is provided.

According to the sixth aspect of the present invention, it is possible for the operator to automatically replenish the seedling mats after grasping the timing of replenishing the seedlings and the current remaining amount of the seedling mats.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments. 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 explanatory view at the time of seedling replenishment, FIG. 4 is a partial plan view of a mat support portion of a spare seedling mounting table, and FIG. FIG. 6 is a block diagram, FIG. 6 is a perspective view showing a form of supporting the spare seedling mounting base on the pedestal, FIG. 7 is an explanatory view of a mechanism for moving the spare seedling mounting base laterally, and FIG. It is explanatory drawing of the part which detects quantity.

The rice transplanter according to the embodiment shown in FIGS. 1 and 2 has a small-diameter narrow front wheel 14, which is linked to an engine 13 on the left and right sides of a traveling body 10 having a driver's seat 11, a steering wheel 12, and the like. 14 and the large-diameter and wide rear wheel 1 which is also linked to the engine 13 via the transmission 15
6, a hydraulic cylinder 17 and an elevating device 18 using a parallel link mechanism having a pair of left and right lower links and a top link interlocked with the hydraulic cylinder 17 are provided at the rear of the traveling machine body 10. A seedling table 21 having a size corresponding to a plurality of planting strips and a plurality of planting sections 22 for taking out and planting seedlings of a seedling mat M supported by the seedling table 21 on the elevating device 18.
2 shows a riding type rice transplanter for multi-row planting, which supports the planting device 2 provided with the above-mentioned structure and enables the planting device 2 to move up and down by the operation of the lifting device 18. The planting device 2 is linked to a PTO shaft 19 extending from the transmission 15.

As shown in FIG. 2, near the driver's seat 11 of the traveling body 10, the transmission mechanism of the transmission 15 is moved to the "moving speed" stage, the "planting speed" stage, the "rear speed" stage and the "seedling position". ), The hydraulic cylinder 17 is operated to switch the planting device 2 between the "up" position and the "down" position, and furthermore, the planting clutch for switching the power take-off of the PTO shaft 19 between ON and OFF. An auxiliary lever 4 for operation is provided. The main lever 3
Is operated to the "seedling position", the planting clutch is disengaged, and the planting device 2 is automatically raised by the lifting device 18.

As shown in FIG. 1, a driver's seat 11 of a traveling machine body 10 is provided.
And a pedestal 10 in front of the lifting device 18.
a, and the seedling mat M is placed on the pedestal 10a.
The spare seedling table 5 to be supplied to the vehicle 1 is mounted so that the traveling body 10 can be moved laterally in the left-right direction.

The spare seedling mounting table 5 is provided with a plurality of mat support portions 51 using a rectangular plate body for supporting the seedling mat M up and down at predetermined intervals so as to be movable downward. ing. Note that a plurality of the mat support portions 51 are provided at predetermined intervals in the left-right direction of the traveling machine body 10 corresponding to the planting strips.

The means for moving each mat support portion 51 up and down may be, for example, as shown in FIG. 4, rotating wheels 52 and 53 arranged on the left and right sides of the mat support portion 51 at predetermined intervals vertically.
And an endless chain 54 hung between the rotating wheels 52, 53, and attached to the endless chain 54 at a predetermined interval. The endless chain 54 stands laterally in one of the moving regions and faces downward in the other moving region. Multiple tines 5 that can be overturned
And one of the rotating wheels 52 and 53 is linked to the PTO shaft 19 of the traveling machine body 10 via a transmission mechanism. Then, by rotating the rotating wheels 52 and 53 while supporting the left and right ends of the mat support portion 51 on the tine 55 standing laterally at the left and right positions of the mat support portion 51, each of the tines corresponding to the planting strips is rotated. The mat support portion 51 is moved downward.

A mat transfer means for transferring the seedling mat M supported by the lowermost mat support portion 51 to the seedling mount 21 is provided at the bottom of the spare seedling mount 5 and an empty mat support portion after the transfer. A collection space 7 for collecting 51 is provided.

As shown in FIG. 1, the mat transfer means includes a rectangular mat joining plate 61 for inheriting the seedling mat M supported by the lowermost mat supporting portion 51, and the mat joining plate 61.
Is provided with a mat feed mechanism 62 that feeds the sheet sideward toward the rear seedling table 21.

The mat connecting plate 61 and the mat supporting portion 5
1, a plurality of split grooves 51a, 61a constituting a mat collecting means is provided on one side of a rectangular plate as shown in FIG. 4, and when the mat supporting portion 51 moves downward, the mat supporting portion 51 is provided. Of the mat support portion 51 passes through the split groove 61a of the mat joint plate 61.
Can be transferred to the mat joining plate 61, and the empty mat supporting portion 51 after the transfer can be collected in the collecting space 7 provided below the mat joining plate 61. I can do it. The collected empty mat support portions 51 can be stacked in the collection space 7. Note that the spare seedling mounting table 5 may be provided with a mat detector for detecting whether there is a seedling mat M at the bottom.

The mat feed mechanism 62 includes a spare seedling table 5
The mat joint plate 61 can be laterally fed outward from the spare seedling mounting table 5 by operating the piston rod of the hydraulic cylinder 63. The mat feed mechanism 62 uses an endless band such as a chain that can be circulated, hooks one end of the mat joint plate 61 to the endless band, and moves the mat joint plate 61 by moving the endless band. You may comprise so that it may move laterally.

A hydraulic cylinder 64 is provided between the bottom plate of the frame 50 and the mat joint plate 61 to incline the mat joint plate 61 obliquely rearward. By inclining toward the seedling mounting table 21, the seedling mat M slides down to the seedling mounting table 21. In addition, a plurality of the mat support portions 51, the mat joint plate 61, the mat feed mechanism 62, and the collecting means are provided corresponding to the planting strips, and the mat supporting portions 51 corresponding to the planting strips are individually lowered and moved. I try to move it sideways.

As is known, the planting device 2 comprises a planting case 23 having a transmission mechanism interlocked with the PTO shaft 19 of the traveling machine body 10 via a universal joint, and a traveling machine body from the planting case 23. Six transmission cases 24 supported at intervals of the planting strips via PTO horizontal shafts extending in the left-right direction of 10, and are supported by these transmission cases 23 and are interlocked via the transmission mechanism and the PTO horizontal shafts. The planting portion 22 having a plurality of planting claws, the seedling platform 21 extending obliquely upward from a position near the planting portion 22 toward the front, and the seedling platform 21 is moved in the left-right direction of the traveling machine 10. And a rolling mechanism (not shown) for rolling the planting apparatus 2.

Below the planting case 23 and the transmission case 24, a float 25 which moves up and down in conjunction with the planting depth is arranged to enhance the protection and leveling effect of the planting case 23 and the transmission case 24. On the other hand, a swingable float (not shown) is arranged to reduce the traces of the wheels and reduce the muddyness in the body 10. When the main lever 3 is switched to the "seedling position", the rolling control is at a fixed position with respect to the traveling machine body 10.

The seedling mounting table 21 is provided with a mat mounting portion 21a capable of supporting a plurality of seedling mats M, usually two seedling mats M, vertically in series toward the planting section 22,
As shown in FIG. 2, a first mat for detecting a certain amount of decrease in the seedling mat M at the upper end position of the seedling mat M at the planting part side position and the vertical position of the mat placing part 21 a at the planting part side. A detector A and a second mat detector B are provided, and when the first mat detector A and the second mat detector B operate and a nursery connection command is issued, the spare seedling mounting table 5 is moved in the left-right direction. The seedling mat M of the mat support portion 51 corresponding to the mat placing portion 21a to which the seedling joining command has been issued is moved toward the mat placing portion 21a to which the seedling joining command has been issued. ing.

As shown in FIG. 5, the first mat detector A and the second mat detector B are connected to the input unit of a controller 30 using a microprocessor, and the relay 31 and the relay 31 of the relay 31 are connected to the output unit. An electromagnetic switching valve 33 for driving a hydraulic cylinder 37, which will be described later, is connected via a switch 32 which is turned on by excitation, and a panel display 34a made of liquid crystal or the like for notifying the operation of the detector A, a buzzer 3
4b, a notifying means such as a voice message device is connected so that the operator can be notified that the seedling joining command is issued to the mat placing portion 21a of the seedling placing table 21.
When the mat detector C for detecting whether there is a seedling mat M at the lowermost stage of the spare seedling mounting table 5 is provided, the mat detector C is connected to the input unit.

The rice transplanter constructed as described above is provided with a seedling raising means for raising the planting apparatus 2 so that the seedling mounting table 21 is at a seedling connecting position corresponding to the lowermost mat support portion 51. ing.

As shown in FIG. 1, the seedling raising means includes a rising detector D provided on the traveling machine body 10, a transmission cable 8 for transmitting the vertical movement of the float 25 to the rising detector D, A control valve 9 is provided in the oil supply circuit of the hydraulic cylinder 17 and operates by a pulse signal output from the elevation detector D. When the main lever 3 is switched to the "seedling position" to raise the planting device 2, the float 2 is moved with the raising of the planting device 2.
When 5 drops most, the rising detector D is turned on, the control valve 9 is operated according to the number of pulse signals output from the rising detector D, and the planting device 2 is raised by the hydraulic cylinder 17. When the float 25 is separated from the water surface of the field, the seedling connection position is set so that the planting device 2 is stopped, and the replenishment start end of the seedling table 21 is moved to the lowermost stage of the spare seedling table 5. Corresponding to the mat support portion 51. For example, when a signal of one pulse is output from the rising detector D, the planting apparatus 2 is raised to a position higher than the predicted water depth of the field, and this position is set as a seedling connection position.

The spare seedling mounting table 5 is moved in the left-right direction of the traveling machine body 10 via a pair of guide rails 35, 35 attached to the pedestal 10a and rolling rollers 36, 36 contacting the guide rails 35, 35. The hydraulic cylinder 37 is provided between the spare seedling mounting table 5 and the pedestal 10a, and the operation of the hydraulic cylinder 37 causes the spare seedling mounting table 5 to move laterally in the left-right direction. I have.

As shown in FIG. 2, the moving direction of the seedling table 21 is set between the left end portions of the seedling table 21 and the spare seedling table 5 or between the right ends of the seedling table 21 and the spare seedling table 5. Direction detecting means for detecting is provided. This direction detecting means is, for example, a position detecting switch SW1 provided on the left end of the spare seedling mounting table 5.
A switching piece 38 provided at the left end of the seedling mounting table 21 to switch the position detection switch SW1 between a left position and a right position.
When the seedling mounting table 21 moves to the left as shown in FIG. 8A, the switching piece 38 is set to the position detection switch SW.
1 and switches the position detection switch SW1 to the left position, and when the seedling mounting table 21 moves to the right as shown in FIG.
Then, the position detection switch SW1 is switched to the right position, and the direction of movement of the seedling mounting table 21 is detected by these switches.

In the rice transplanter of the first embodiment configured as described above, for example, two seedling mats M corresponding to the number of planting streaks are arranged in series on the seedling mounting table 21 of the planting device 2. In the loaded state, the planting device 2 is lowered by the elevating device 18 and the planting section 22 is operated to perform a seedling planting operation. By this planting operation, for example, when the first seedling mat M placed on the mat placing portion 21a corresponding to one planting strip disappears and the second upper seedling mat M falls, the first mat is detected. The vessel A operates and informs the operator that the first seedling mat M is gone. Therefore, the operator can easily grasp the timing of the seedling splicing and the current remaining amount of the seedling mat M.

When the second seedling mat M placed on the mat placing portion 21a corresponding to one planting strip is reduced by the planting operation and needs to be replenished, the second mat detector B operates. Then, the operator is notified of the supply of the seedling mat M. Here, when the operator operates the main lever 3 to the "seedling position", the movement of the traveling machine body 10 is stopped, the operation of the planting section 22 is stopped, and the hydraulic cylinder 17 is operated, and the lifting device is moved. At 18, the planting device 2 starts to rise.

With the rise of the planting device 2, the float 25
Turns on the rise detector D when it sags the most,
The control valve 9 operates according to the number of pulse signals output from the elevation detector D, and the planting device 2 is elevated by the elevation device 18. And when the float 25 is separated from the water surface of the field by a predetermined height, in other words, when the number of pulse signals reaches a set value, the planting apparatus 2 stops at the seedling splicing position,
The supply start end of the seedling mounting table 21 corresponds to the lowermost mat support section 51 of the spare seedling mounting table 5, specifically, the mat splicing plate 61 to which the seedling mat M has been transferred from the lowermost mat support section 51. Can be. In addition, since the rising amount of the planting device 2 to the seedling connection position is set based on the number of pulse signals by predicting the water surface height of the field in advance, the seedling mounting table 21 can be accurately raised to the seedling connection position. .

After the raising of the planting device 2 is stopped, the mat feeding mechanism 62 operates to perform automatic seedling connection. In this automatic seedling connection, the mat joining plate 61 is laterally fed toward the seedling mounting table 21 by the hydraulic cylinder 63 of the mat feeding mechanism 62, and the mat joining plate 61 is further moved by the hydraulic cylinder 64.
As a result, the seedling mat M placed on the mat joining plate 61 slides down from the replenishment start end to the seedling mounting table 21 to complete automatic seedling connection. Thus, without raising the planting device 2 to the uppermost position of the elevating range by the elevating device 18, the seedling mounting table 21 is moved to the seedling splicing position corresponding to the lowermost mat support portion 51 of the spare seedling mounting table 5. Since automatic seedling connection is performed by raising the seedlings, the amount of raising of the planting apparatus 2 due to the seedling connection can be reduced, and the seedling connection efficiency can be improved.

When the seedling mounting table 21 is moved to one side in the left-right direction with respect to the center of the traveling machine body 10, the seedling mat M
When it becomes necessary to replenish, the moving direction of the seedling mounting table 21 is detected by the position detection switch SW1 of the direction detecting means, and the hydraulic cylinder 37 operates based on the detection result, and the spare seedling mounting table 5 is connected to the guide rail. It moves laterally along 35, 35 toward the stop position of the seedling mounting table 21.

With this lateral movement, the position detection switch SW1
Abuts on the switching piece 38 of the seedling mounting table 21 and the position detection switch SW1 is switched to the left position or the right position.
The lateral movement of the spare seedling mounting table 5 stops. Therefore, the spare seedling mounting table 5 can be accurately stopped at a position corresponding to the seedling mounting table 21, and the above-described automatic seedling connection can be accurately performed. In addition, since the spare seedling mounting table 5 is moved only when it becomes necessary to replenish the seedling mats M, it is necessary to control the heavy spare seedling mounting table 5 to follow the movement of the seedling mounting table 21. Absent.

After the seedlings are connected to the seedling mounting table 21 as described above, the rotating wheels 52 and 53 are rotated so that the second or more mat support portions 51 move downward, and the second mat The seedling mat M supported by the support portion 51 is transferred to the mat joining plate 61, and the second-stage mat support portion 51 becomes the first-stage mat support portion 51 in the collection space 7.
Stacked on.

As described above, the mat support portion 51 is moved up and down in the frame of the spare seedling mounting table 5, so that the mat support portions 51 which are arranged side by side in a horizontal direction corresponding to a plurality of planting streaks are individually provided. In the case of raising / lowering control, the space in the lateral direction can be reduced, the interval between the planting streaks can be reduced, and the power for raising / lowering the mat support portion 51 can be reduced. it can. Furthermore, since the seedling mat M of the mat support portion 51 can be transferred to the mat joining plate 61 only by lowering the mat supporting portion 51, it is not necessary to specially transport the seedling mat M to the mat joining plate 61. No space in the front-rear direction for this transport is required.

In the embodiment described above, the lateral movement direction and the lateral movement position of the seedling mounting table 21 are determined by the position detection switch S.
A direction detecting means provided with a switching piece 38 for switching W1 between a left position and a right position is provided. In addition, as shown in FIG. 9, for example, as shown in FIG. A position detector F that detects the amount of movement of the spare seedling mounting table 5 in the left-right direction may be used.

The position detector E shown in FIG.
11 is provided with a stroke sensor having a retractable rod between the planting frame 20 and the seedling mounting table 21, and the position detector F shown in FIG. A stroke sensor having a telescopic rod is provided between the guide rail 35 and the center of the seedling table 21 in the left-right direction based on an output signal output from the position detector E, specifically, a voltage signal. The electromagnetic switching valves 33, 33 for operating the hydraulic cylinder 37 based on the output signal output from the position detector F, specifically, the voltage signal, are detected by the position detector E. The control is performed until the voltage becomes the same as the detected value, and the spare seedling mounting table 5 is automatically laterally moved to a position corresponding to the seedling mounting table 21.

In the embodiment shown in FIG. 13, the input section of the controller 30 using a microprocessor is
An automatic switch SW2 for switching on / off by an operator's switching operation, the mat detector A and the position detectors E and F are respectively connected, and the electromagnetic switching valves 33 and 33 of the hydraulic cylinder 37 are connected to the output unit. Connected.
The mat detector A is provided on the seedling mounting table 2 as shown in FIG.
In addition to the operation of the main lever 1, the main lever 3 may be operated when it is operated to the "seedling position", or may be operated by an operator.

With the configuration shown in FIGS. 9 and 11, the lateral movement of the seedling table 21 can be directly detected, so that the amount of lateral movement of the seed table 21 can be detected more accurately. Further, the spare seedling mounting table 5 can be automatically and laterally moved to a position corresponding to the seedling mounting table 21 more accurately. In addition, since the range of lateral movement of the seedling mounting table 21 and the spare seedling mounting table 5 is substantially the same, it is easy to adjust the detection characteristics by using the same type of position detectors E and F.

The position detector E is mounted on the hitch 27 or a hitch 27 supported on the planting frame 20 via a rolling shaft 26 so as to be able to turn to the left and right as shown in FIG. Hydraulic cylinder 2 for tilt control
8 and the seedling mounting table 21.

In the embodiment shown in FIG. 15, when the mat detectors A and B are connected to the input section of the controller 30 and the main lever 3 is operated to the "seed connection position" at the output section, or The position detector is connected in series with a switch SW3 which is turned on by depressing a traveling clutch pedal provided near a driver's seat and a switch SW4 which is turned on when an operator operates a seedling supply switch or a seedling supply lever. After A and B operate, the main lever 3
Is operated to the "seedling position" or the traveling clutch pedal is operated to turn on the switch SW3, and the operator operates the seedling replenishment switch or the seedling replenishment lever to turn on the switch SW4. Relay 31
And a switch 3 that is turned on by excitation of the relay 31
, The electromagnetic switching valve 33 is operated via the valve 2, and the hydraulic cylinder 37 is operated to automatically move the spare seedling mounting table 5 to a position corresponding to the seedling mounting table 21. The seedling mat M is supplied to the placing portion 21a.

In this embodiment, when the planting operation is performed, the seedling table 21 as shown in the flowchart of FIG.
After the first of the seedling mats M placed on the mat placing portion 21a has disappeared and the second upper seedling mat M has been lowered and the mat detector A has been operated (S1), the switch SW3 has been turned on to operate. It is determined whether or not the switch SW3 is on (S2). If the switch SW3 is on, it is determined whether or not the switch SW4 is on (S3).
When W4 is on, the electromagnetic switching valve 33 for the hydraulic cylinder 37 is operated (S4).

In the embodiment described above, the preliminary seedling mounting table 5 is laterally moved to carry out the seedling connection. In addition, for example, as shown in FIG. A transfer belt 40 for laterally feeding the seedling mat M in the lateral direction of the traveling machine body 10 is provided between the transfer belt 21 and the seedling mat M supported by the mat support portion 51 of the spare seedling mounting table 5. Thereafter, the transport belt 40 may be moved in accordance with the lateral movement amount of the seedling mounting table 21, and the seedling mat M may be laterally fed by the transport belt 40.

The transport belt 40 is provided on a roll 4 rotatably provided at predetermined intervals in the left-right direction of the traveling machine body 10.
The entire length is formed longer than the lateral movement area of the seedling mounting table 21. And one roll 4
1 is driven by driving means such as an electric motor 43 to move the transport belt 40,
The seedling mat M placed on the table is fed sideways.
Further, the transport belt 40 includes the seedling mounting table 21 and the spare seedling mounting table 5.
The mat mounting portion 40a corresponding to the planting strip is formed by a ridge.

In this embodiment, a controller 30 using a microprocessor as shown in FIG.
An automatic switch SW2 for switching on / off by an operator's switching operation, the mat detector A, and the position detectors E and F are respectively connected to the input section of the controller, and the output section is electrically driven via a relay circuit 39. The motor 43 is connected. Also in this case, similar to the one shown in FIG.
In addition to providing the mat detector A on the seedling mounting table 21, the mat detector A may be operated when the main lever 3 is operated at the "seedling position", or may be operated by an operator. Is also good.

The embodiment shown in FIGS. 20 and 21 is a clutch for individually controlling the drive / stop of the planting portion 22 provided corresponding to the planting streak, more specifically, a unit clutch (not shown). Is provided, the operator can select the number of planting strips, and the mat placing portion 21a for the selected number of planting strips is provided.
The seedlings can be automatically spliced from the spare seedling mounting table 5
Further, the mat placing portion 21 corresponding to the planting strip not selected is used.
a is configured so that seedling replenishment is not performed even when the seedling mat M is reduced to a certain amount, and is basically the same as that of FIGS. Description and operation are omitted.

In this embodiment, when the planting operation is performed, as shown in the flow chart of FIG. 21, I representing the number of the planting line is set to I = 0 (S1). When the planting rule I is the first rule, since I = 0, I ← I + 1
← 0 + 1, and in the case of the second article, I ← 0 + 2 (S
2). It is determined whether or not the number of planting lines I is larger than the total number of lines MAX (S3). If the number of planting lines I is smaller than the total number of lines MAX, whether the unit clutch of the first line is disengaged. Is determined (S4), and if the unit clutch is engaged, it is determined whether or not the mat detector A is off (S5), and the mat detector A is off and the seedling mat M is present. In this case, it is determined whether or not the mat detector B is off (S6). If the mat detector B is off and there is a seedling mat M, the process returns to (S2) and corresponds to the second item. The presence or absence of the seedling mat M in the mat placing portion 21a to be searched is searched. If the unit clutch of the first article is disengaged in (S4), there is no need to supply the seedlings to the mat placing part 21a, so the procedure returns to (S2) and the seedling mat M of the mat placing part 21a corresponding to the second article is removed. Search for presence. If the mat detector A is on and the seedling mat M is not present in (S5), seedling replenishment is automatically performed from the spare seedling mounting table 5 (S7). In the case where the mat detector B is turned on and there is no seedling mat M in (S6),
Seedling replenishment is automatically performed from the spare seedling mounting table 5 (S8).
If the number of the planting lines I is larger than the total number MAX in (S3), the process returns.

With such a configuration, in the section where the unit clutch is disengaged, seedling replenishment is not performed even when the seedling mat M is reduced to a certain amount or more, so that it remains in the mat placing portion 21a. Small seedling mat M
However, it is possible to reduce the collapse due to the replenished seedling mats M, or to protrude from the seedling outlet, and improve the planting accuracy when the unit clutch is disconnected and the planting operation is restarted. . In the embodiment described above,
The seedling raising means is configured to raise the planting device 2 in accordance with the number of pulses. In addition, for example, the height of the planting device 2 with respect to the water surface of the field is also detected by using a photoelectric switch or the like. You may.

In the embodiment described above, the moving means in which the tine 55 is provided on the endless chain 54 is used as a means for moving the mat support portion 51 of the spare seedling mounting table 5 up and down. It may be configured as shown in FIG. 22 or FIG.

In the arrangement shown in FIG. 22, a pair of links 56 which cross in a substantially X-shape are provided at both left and right positions of the mat support portion 51 in each planting streak, and these links 56 are raised and lowered by driving means such as a hydraulic cylinder. When operated, the mat support portion 51 is moved downward at the time of its fall, and the seedling mat M is inherited by the mat joining plate 61.

The frame shown in FIG.
A pair of guide plates 57, 57 slidable in the front-rear direction along the left and right ends of the mat support portion 51 is provided at both left and right positions of the mat support portion 51.
Guide grooves 58, 58 which are curved in a waveform from the upper side to the lower side are provided on the upper and lower sides of the mat plates 51, respectively. , 58 to be engaged with and engaged with the projection 59.
Are provided, and the guide plates 57 are slid in the front-rear direction by driving means such as a hydraulic cylinder (not shown), and the distance between the guide plates 57 is changed so that each guide of the projections 59. By changing the position of engagement with the grooves 58, 58, moving the mat support portion 51 downward, and returning each guide plate 57, 57, the support state of the upper mat support portion 51 can be maintained. It is configured to be able to.

[0061]

According to the rice transplanter according to the first aspect of the present invention, the seedling is raised by raising the planting device so as to be at the seedling connecting position corresponding to the lowermost mat support portion of the spare seedling mounting table. The seedling mat can be replenished without raising the seedling mounting table to the uppermost position of the elevating range by the elevating device. Can be.

According to the rice transplanter according to the second aspect of the present invention, the lowermost mat support portion of the spare seedling mounting table can be recovered through the mat splicing plate disposed below the mat support portion. Therefore, the seedling mat supported by the lowermost mat support can be successfully transferred to the mat splicing plate, and the transferred seedling mat can be reliably transferred to the replenishment start end of the seedling mounting table. , The seedling table can be reliably supplied.

According to the rice transplanter according to the third aspect of the present invention, when it becomes necessary to replenish a seedling mat to the seedling mounting table due to the lateral movement of the seedling mounting table and the planting operation by the planting section, the direction detecting means detects the seedlings. The moving direction of the platform can be automatically detected, and based on this detection value, the spare seedling platform can be moved to the position where seedling replenishment is required, and the replenishment of the seedling mat to the seedling platform is good. Can be done.

According to the rice transplanter of the fourth aspect, the seedling mat can be supplied to the seedling mounting table corresponding to the planting section activated by the unit clutch, and furthermore, the seedling mat is deactivated by the unit clutch. Since the seedling mat can be prevented from being supplied to the seedling table corresponding to the attached part, even if the seedling mat of the seedling table corresponding to the planted part, which is deactivated by the unit clutch, is reduced to a certain amount. However, it is possible to prevent the seedling mat from being supplied with the seedling mat. Therefore, the seedlings of the seedling mat reduced to a certain amount can minimize the collapse of the mat due to the weight of the replenished seedling mat and the protrusion from the seedling take-out portion, and restarted planting. The planting system at the time can be improved.

According to the rice transplanter according to the fifth aspect of the present invention, the operation of the first detector provided at an intermediate position of the mat placing portion of the seedling placing stand allows the operator to grasp the timing of seedling replenishment and the current remaining amount of the seedling mat. It is easy to do.

According to the rice transplanter according to the sixth aspect of the present invention, it is possible for the operator to automatically replenish the seedling mats after the operator has grasped the timing of the seedling replenishment and the current remaining amount of the seedling mats.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the rice transplanter according to the present invention.

FIG. 3 is an explanatory diagram of a rice transplanter according to the present invention when replenishing seedlings.

FIG. 4 is a partial plan view of a mat support portion of the spare seedling mounting table of the rice transplanter according to the present invention.

FIG. 5 is a control block diagram of the rice transplanter according to the present invention.

FIG. 6 is a perspective view showing a mode of supporting a spare seedling mounting table of the rice transplanter according to the present invention on a pedestal.

FIG. 7 is an explanatory diagram of a mechanism for laterally moving a spare seedling mounting table of the rice transplanter according to the present invention.

FIG. 8 is an explanatory diagram of a portion for detecting a lateral movement direction and a lateral movement amount of a seedling table of the rice transplanter according to the present invention.

FIG. 9 is an explanatory diagram showing another example of detecting the movement position of the seedling table of the rice transplanter according to the present invention.

FIG. 10 is a voltage characteristic diagram of the position detecting means of FIG.

FIG. 11 is an explanatory diagram showing another example of detecting the movement position of the spare seedling mounting table of the rice transplanter according to the present invention.

FIG. 12 is a voltage characteristic diagram of the position detecting means of FIG.

FIG. 13 is a control block diagram in the case where the position detecting means of FIGS. 9 and 11 is used.

FIG. 14 is an explanatory view showing another attachment form of the position detecting means of FIG. 9;

FIG. 15 is a control block diagram of another embodiment of the rice transplanter according to the present invention.

FIG. 16 is a control flowchart when the configuration of FIG. 15 is adopted.

FIG. 17 is a perspective view showing another embodiment of replenishing seedlings of the rice transplanter according to the present invention.

FIG. 18 is a side view of the embodiment of FIG.

FIG. 19 is a control block diagram when the configuration of FIG. 17 is adopted.

FIG. 20 is a rear view of a seedling mounting portion showing another embodiment of the rice transplanter according to the present invention.

21 is a control flowchart when the configuration of FIG. 21 is adopted.

FIG. 22 is a side view showing another mode of the vertical moving means of the mat support portion of the rice transplanter according to the present invention.

FIG. 23 is a side view showing still another mode of the vertical moving means of the mat support portion of the rice transplanter according to the present invention.

[Explanation of symbols]

 2 Planting device 5 Spare seedling stand 10 Running machine body 11 Driver's seat 21 Seedling stand 22 Planting part 51 Mat support part A Mat detector B Mat detector

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiki Minamiishi 1-32 Chayacho, Kita-ku, Osaka City, Osaka Inside Yanmar Agricultural Machinery Co., Ltd.

Claims (6)

[Claims] 1. A vehicle body provided with a driver's seat,
A mat that supports a planting device provided with a planting section for taking out and planting a seedling of a seedling mat supported by a seedling mounting table so as to be able to move up and down, and a seedling mat to be supplied to the seedling mounting table is supported. The seedling mat of the mat support portion is provided at a seedling mat corresponding to the mat support portion with a spare seedling mount provided so that the support portion can be moved up and down at a predetermined interval vertically. In a rice transplanter having a mat transfer means for transferring, a seedling raising means for raising the planting device so that the seedling mounting table is located at a seedling connecting position corresponding to a lowermost mat support portion. A rice transplanter characterized by: 2. The mat transfer means includes a mat splicing plate that inherits a seedling mat supported by a lowermost mat supporting portion, and a mat feed mechanism that laterally feeds the mat splicing plate toward a seedling mounting table. 2. The rice transplanter according to claim 1, further comprising a collecting unit that collects an empty mat support portion after transferring the seedling mat to the mat joining plate, and passes the mat joining plate downward. 3. The seedling mounting table and the spare seedling mounting table are capable of laterally moving a traveling machine body in the left-right direction, a direction detecting means for detecting a lateral movement direction of the seedling mounting table, and a lateral movement of the seedling mounting table. 3. The rice transplanter according to claim 1, further comprising a position detector for detecting a movement amount and a position detector for detecting a lateral movement amount of the spare seedling mounting table. 4. A plurality of seedling mounts, spare seedling mounts, and planting portions are provided corresponding to a plurality of planting strips, and at least one of the planting portions is controlled to be activated / deactivated. 3. The rice planting according to claim 1, further comprising: a clutch for performing the operation, and a seedling mat replenishing means for automatically replenishing the seedling mat of the spare seedling mounting table to the seedling table corresponding to the planting section operated by the clutch. Machine. 5. The seedling mounting table has a mat mounting portion capable of supporting a plurality of seedling mats in series toward the planting portion, and the seedling mat is reduced at an intermediate position between the mat mounting portions. 2. A first mat detector for detecting an error is provided.
A rice transplanter according to any one of claims 1 to 4. 6. A method according to claim 1, further comprising a second detector for detecting a decrease in the seedling mat at a position on the planting portion side of the mat support portion, wherein the first and second detectors are provided.
6. The rice transplanter according to claim 5, further comprising a mat feed mechanism for laterally feeding the seedling mat of the spare seedling mount toward the seedling mount when the detector operates.