JP2002125424A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect a moving position of a seedling-carrying platform and automatically stop the seedling-carrying platform in the position. SOLUTION: This sulky rice transplanter 10 is equipped with a seedling- carrying platform 27, planting case parts 23, 24, etc., under the seedling-carrying platform 27 and detecting switches 52a, 52b and 52c for detecting the movement of the seedling-carrying platform 27 to a prescribed position in the moving direction relatively to the planting case parts 23, 24, etc., and is capable of automatically stopping the seedling-carrying platform 27 when the movement of the seedling-carrying platform 27 to a prescribed position is detected. For example, when seedlings are placed on the seedling-carrying platform 27 in a state of the sulky rice transplanter 10 moved to the edge of a levee during preparation for planting operation, the seedling-carrying platform 27 is moved to a moving end which is nearer to the edge of the levee and the seedling- carrying platform 27 is stopped at the moving end to thereby improve operations to place the seedlings.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanting machine having a seedling mounting table and a planting case portion below the seedling mounting table, and more particularly to a transplanting machine capable of detecting a moving position of the seedling mounting table.

[0002]

2. Description of the Related Art In a transplanting machine such as a riding rice transplanter, a seedling mounting table on which seedlings are placed is mounted so as to be reciprocally movable in the left-right direction with respect to a planting case portion. There is a seedling remaining amount sensor that detects the remaining amount of
On the rear side of the seedling mounting table, there is provided a seedling vertical feeding mechanism that feeds out seedlings downward at the left and right moving ends of the seedling mounting table.
Then, for example, in the preparation state of the planting work, the airframe is moved to the ridge side, the seedling mounting table is moved to the left end or the right end closer to the ridge side and stopped, and the seedling is taken out of the seedling raising box in that state. Place on the platform. If the seedling remaining amount sensor operates and the alarm buzzer sounds during the planting operation, the operator stops the alarm buzzer, stops the planting operation, replenishes the seedling mounting table with seedlings, and starts planting. To resume.

[0003]

However, according to the prior art, prior to planting, when seedlings are placed on the seedling mounting table, it is necessary to supply the seedlings by moving the seedling mounting table near the ridge. However, conventionally, it has been difficult to accurately stop the seedling mounting table at the left and right moving ends. For example, in a multi-row rice transplanter having eight to ten rows, in order to fold the seedling mounting table, it is necessary to stop at the center position in the moving direction and fold the seedling mounting table. It was difficult to stop the platform at the center position.

[0004] The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to detect a moving position of a seedling mounting table and automatically stop at that position, or to provide a buzzer or the like. An object of the present invention is to provide a transplanter which can be notified by the above.

[0005]

In order to achieve the above object, according to the present invention, a seedling placing portion (2) for placing seedlings is provided.
7a) a plurality of seedling mounts (27) arranged in the movement direction;
A plurality of planting case parts (23, 23) arranged below the seedling placing part (27a) corresponding to the seedling placing part (27a) and transplanting seedlings with planting claws.
24 etc.), the seedling rest (2) is placed on the planting case (23, 24 etc.).
7) includes detecting means (52a, 52b, 52c) for detecting that the position has moved to a predetermined position in the moving direction.
It is characterized by the following.

According to the second aspect of the present invention, based on the fact that the detecting means (52a, 52b, 52c) detects that the seedling mounting (27) has moved to the moving end in the moving direction, Stop means (58, 60, 63, 65, etc.) for automatically stopping the movement of the seedling mounting table (27)
It is characterized by having.

According to the third aspect of the present invention, the detecting means moves the seedlings of the seedling mounting portion (27a) upward based on the movement of the seedling mounting base (27) in the moving direction. The moving position of the seedling mounting table (27) is detected by driving the vertical feeding means (11) for transporting the seedlings downward.

[Action] As described above, according to the present invention, the transplanter (10) is provided with a plurality of seedling mounts (27) arranged in the moving direction and a plurality of seedling mounts (27) arranged below the seedling mount (27). A planting case section (23, 24, etc.) and detecting that the seedling mounting (27) has moved to a predetermined position in the moving direction with respect to the planting case section (23, 24, etc.). Since the detection means (52) is provided, when it is detected that the seedling mounting table (27) has moved to a predetermined position,
It becomes possible to automatically stop the seedling mounting stand (27) or to notify by a buzzer or the like.

For this reason, for example, in the preparation stage of the planting operation, when placing the seedlings on the seedling mounting table (27) with the transplanter (10) being moved to the ridge side, the seedling mounting table (27) is used. )
Movement of the seedlings to the moving end closer to the ridge and stopping at the moving end improves the workability at the time of placing seedlings, and also when storing the multi-row transplanter (10). ,
When the moving end side of the seedling mounting table (27) is folded, the seedling mounting table (27) can be accurately stopped at substantially the center position in the moving direction, so that the folding operation is further facilitated. .

Note that the reference numerals in parentheses described above are shown for reference to the drawings, and do not limit the present invention in any way.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a riding rice transplanter as a transplanting machine to which the present invention is applied. This riding rice transplanter 10 has a traveling machine body 14 supported by a front wheel 12 and a rear wheel 13. The traveling body 14 includes the steering wheel 1
An engine 17 is mounted in a hood 16 in front of the vehicle 5, and a driver's seat 19 having a seat 18 is provided at the rear of the traveling machine body 14. A hydraulic / planting lever 20 is provided on the side of the seat 18, and the hydraulic / planting lever 20 is "raised", "fixed", "lowered (automatic)" along the lever guide. , "Planting (automatic)"
It can be operated at each position.

At the rear of the traveling machine body 14, a planting portion 22 is supported via a lifting link mechanism 21 so as to be able to move up and down. The planting case 22 is a planter case 2 constituting a planting case portion.
3. In addition to the rotary case 24, the planter arm 25, the float 26, and the apron 33 described later, a seedling mounting table 27 on which mat seedlings can be mounted in the vertical direction (up and down direction) is provided. The seedling placing table 27 has a plurality of seedling placing sections 27a arranged in the horizontal direction and a partition plate 27b for partitioning the plurality of seedling placing sections 27a. Is provided. This seedling vertical feeding device 11
A vertical feed belt 28 is provided.
Are driven to be sequentially conveyed to the lower end side, scraped off by the planter arm 25 and planted on the rice field.

A hydraulic cylinder (not shown) is provided between the traveling body 14 and a link bracket 29 fixed to the lifting link mechanism 21 so that the hydraulic / planting lever 20 can be operated. Based on this, the hydraulic cylinder is controlled to expand and contract by a hydraulic control valve (not shown) disposed in the rear cover 30 below the seat 18 via a motor 58 described later, and the planting section 22 is controlled to move up and down.

Next, as shown in FIG. 2, the planter case 23 of the planting section 22 is connected by a square frame 31, and the power transmitted to the planting section 22 is transmitted to the drive system of the planter arm 25. The transmission is divided into three systems: a lateral feed drive system that feeds the seedling placing table 27 in a horizontal direction, and a seedling vertical feed drive system.

The seedling mounting table 27 is arranged so as to be reciprocally driven to the left and right with respect to the apron 33 by a lateral feed drive system including a screw shaft 32.
7 at the middle or lower part in the vertical direction.
1 is arranged, and the seedling vertical feeding device 11 conveys a mat seedling from above to below. The seedling vertical feeding device 11 includes a driving roller 34 and a driven roller 34 ′.
And a vertical feed belt 28 wound between the driving roller 34 and the driven roller 34 ', and a locking projection is formed on the surface of the vertical feed belt 28. The mat seedling is scraped off by the planter arm 25 through a cutout 33a provided in the apron 33 below the seedling mounting table 27, and is planted on the rice field.

In the present embodiment, the planting case 23
In contrast, a detecting means for detecting that the seedling mounting table 27 has moved to a predetermined position in the moving direction along the screw shaft 32 is provided.

FIGS. 3 (a) to 3 (c) show the outline of the lateral feed drive mechanism. The moving speed of the seedling mounting table 27 can be changed by a speed change mechanism 35 of the horizontal feed drive mechanism. It has been.

The transmission mechanism 35 includes a lateral feed case 36.
A transmission shaft 37 is provided therein, and a plurality of transmission gears 38 are rotatably fitted on the transmission shaft 37. A counter shaft 39 parallel to the transmission shaft 37 meshes with the transmission gear 38. The switching gear 40 is key-fixed. A gear located at the end of the switching gear 40 meshes with a driven gear 41 fixed to the screw shaft 32.

A slide key 42 is attached to the transmission shaft 37 along the axial direction. The transmission shaft 37 is provided with a boss 44 interlocked with a shift arm 43. The operation of the boss portion 44
And the slide key 42 slide integrally. The base end of the shift arm 43 is fixed to an operating rod 45 that slides substantially parallel to the speed change shaft 37,
When the shift arm 43 is slid, the boss 44
The slide key 42 and the slide key 42 are integrally moved to change the speed.

A screw groove 32a is formed in the screw shaft 32 in the forward and reverse directions. When the screw shaft 32 rotates, the seedling mounting table is actuated by the action of the slide block 46 engaged with the screw groove 32a. 27 moves forward and backward along the screw shaft 32.

A cam 47 is attached to the end of the screw shaft 32, and an arm 48 is axially mounted by a shaft 49 near the cam 47. Swings up and down. By the swing of the arm 48, the vertical feed lever 50 is intermittently knocked up, and the one-way clutch 51 rotates the seedling feed belt 28 in one direction (see FIG. 2).

Further, as shown in FIG. 4, detection switches 52a, 52b and 52c are provided at the left end position, the center position and the right end position of the seedling mounting table 27, respectively. When the seedling mounting table 27 moves to the left end position, the detection switch 52a at the left end position is pressed by the swing of the arm 48 to turn on the switch, and when the seedling mounting table 27 moves to the center position, When the arm 48 swings, the center position detection switch 52b is pressed and the switch is turned on. Further, when the seedling mounting table 27 moves to the right end position, the arm 48 swings to detect the right end position detection switch 52c.
Is pressed to turn on the switch. This allows
The lateral movement position of the seedling mounting table 27 is detected.

In the present embodiment, the detecting means 5
According to 2, a stop means for automatically stopping the movement of the seedling mounting table 27 based on detecting that the seedling mounting table 27 has moved to the moving end in the moving direction is provided.

FIGS. 5A to 5C are circuit diagrams for detecting the moving position of the seedling mounting table 27. With this circuit, the seedling mounting table 27 is moved to a predetermined position. The movement of the mounting table 27 is automatically stopped.

That is, in FIGS. 5A and 5B, the voltage of the battery 53 is
5 and a changeover switch 5 for the main unit circuit for sounding a buzzer
6 is connected. Further, the changeover switch 56
Are connected via a CPU 57 to a motor 58 for connecting and disconnecting the planting clutch in the transmission case. The motor 58 is driven by the operation of the hydraulic / planting lever 20 to operate a cam 60 (see FIG. 6 described later).
The actuation of 0 causes the planting clutch to be disconnected and connected.

When the planting clutch is disengaged, the input of power to the planting section 22 is cut off, and the lateral movement of the seedling mounting table 27 is stopped. The changeover switch 56 includes a changeover contact 56a and a terminal 56 to which the changeover contact 56a is connected when it is not desired to stop the seedling mounting table 27 as in a normal operation.
b and a terminal 56c connected when the seedling mounting table 27 is to be stopped, such as when supplying the seedlings or folding the seedling mounting table 27. The terminal 56b is directly connected to the CPU 57, and the center detection switch 52b or the left end detection switch 52a and the right end detection switch 52c are connected between the terminal 56c and the CPU 57.

FIG. 5C shows the center detection switch 5.
2b, left end detection switch 52a and right end detection switch 5
2c is selectively switched by a changeover switch 59 which can be interlocked with the changeover switch 56.

In the present embodiment, the case where the movement of the seedling gantry 27 is automatically stopped when the seedling gantry 27 moves to a predetermined position has been described. However, the present invention is not limited to this.
For example, when the seedling mounting table 27 moves to a predetermined position, a buzzer can be sounded instead of stopping the movement of the seedling mounting table 27, and the automatic stop of the seedling mounting table 27 and the sounding of the buzzer can be performed. You can do both. If the buzzer sounds when the seedling mounting table 27 moves to the predetermined position, the operator can accurately stop the seedling mounting table 27 at the moving end position.

As described above, for example, when a rice transplanter is moved to a ridge to supply seedlings, the buzzer sounds when the seedling mounting table 27 is moved to one end in the moving direction closer to the ridge. If the operator can operate the hydraulic / planting lever to stop the movement of the seedling mounting table 27 or automatically stop the movement, the seedling replenishment work becomes convenient. Further, for example, in the case of a multi-row rice transplanter such as 8 to 10 or the like,
When folding the seedling rests on the left and right sides of 7, the seedling rest 2
If it can be stopped at substantially the center in the moving direction, the folding work becomes easy.

FIG. 6 shows the planting clutch mechanism.
When the hydraulic / planting lever 20 is operated, the motor 58 is driven in accordance with the operated position, the arm 63 swings about the swing shaft 64 via the cam 60 and the roller 62, and the clutch wire 65 is further moved. The lever 66 operates via
The planting clutch is turned on and off. The cam 60 includes a gear 67 fixed to a central shaft of a motor 58, and the gear 67
The driving clutch 58 is driven by meshing with the teeth formed on the outer peripheral portion of the cam 60, and the driving of the motor 58 controls on / off of the planting clutch on the above-described path. And these motors 5
8, the cam 60, the arm 63, the clutch wire 65, and the like constitute the stopping means of the present embodiment.

The shifting operation of the moving speed of the seedling placing table 27 is performed by engaging the slide key 42 attached to the key groove of the shift shaft 37 with the specific idle gear 38 as described above. Generally, at the moving end of the seedling placing table 27, all the keyways of the transmission gear 38 are adapted to match, so if the seedling placing table 27 can be stopped accurately at the moving end, The shifting operation of the seedling mounting table 27 can be easily performed.

Next, in the present embodiment, the detecting means includes a vertical feeder for transporting the seedlings of the seedling mounting portion 27a from above to below based on the movement of the seedling mounting table 27 to the moving end in the moving direction. By driving the means 11, the moving position of the seedling mounting table 27 is detected.

In FIG. 7, when the seedling mounting table 27 moves to the left or right end, for example, the vertical feed lever 50 provided on the seedling mounting table 27 and the arm 48 provided at the end of the screw shaft 32. And the swinging arm 48 swings the vertical feed lever 50 upward to rotate the vertical feed belt 28. The swing of the vertical feed lever 50 is detected by the detection switch 52d. When the detection switch 52d is turned on, the seedling table 27 is turned on.
Has been detected to have moved to the left and right moving ends.

FIGS. 8A and 8B show an embodiment similar to the above. According to this embodiment, the seedling table 27 is stopped when it reaches the moving end (for example, the left end).

That is, a plate 68 is attached to the seedling mounting table 27, and a left end detection switch 69 is fixed to the planting case side. When the mounting table 27 is moved laterally, the plate 68 comes into contact with the left end detection switch 69 to be turned on, and the planting clutch switch 7 is turned on.
1 is turned off, and the seedling mounting table 27 is stopped at the left end. As described above, only by turning on the left alignment switch 70, the seedling mounting table 27 can be accurately stopped at the left end position.

Next, the operation will be described.

In the preparation stage of the planting operation by the riding rice transplanter, when taking out the seedlings from the seedling raising box and placing them on the seedling placing stand 27, the machine is to be carried out with the seedling placing stand 27 as close to the ridge as possible. Move to the side of the ridge,
7 is stopped at the moving end near the ridge.

In this case, the planting portion 22 is 30 cm above the ground.
And then set the hydraulic locking lever to "fixed"
When the hydraulic / planting lever 20 is operated to the "planting" position, the screw shaft 32 rotates and the seedling mounting table 27 moves to the left or right. The rotation of the screw shaft 32 also rotates the cam 47 fixed to the end of the screw shaft 32, and the rotation of the cam 47 causes the arm 48 in contact with the cam 47 to intermittently swing. .

When, for example, the seedling mounting table 27 is at the left end position, the position of the vertical feed lever 50 provided on the seedling mounting table 27 coincides with the position of the arm 48, and the arm 48 swings.
As a result, the vertical feed lever 50 is knocked up, the vertical feed belt 28 rotates, and seedling feeding is performed. At the same time, the detection switch 52a for detecting the left end attached to the seedling mounting table 27 is pushed by the swinging arm 48 to be turned on, and the motor 58 for controlling the rotation of the cam 60 in FIG. The planting clutch is disconnected.

Thus, the rotation of the screw shaft 32 of the lateral feed system is also stopped, and the movement of the seedling mounting table 27 is stopped. In this state, the operator removes the seedling from the nursery box and
Seedlings can be easily placed on the seedling table 27 stopped at the moving end. Note that the selective operation can also be performed at the right end and the center position in the moving direction of the seedling mounting table 27.

[0042]

As described above, according to the first aspect of the present invention, the detecting means for detecting that the seedling mounting table has moved to the predetermined position in the moving direction is provided for the planting case portion. By this, it is possible to detect the moving position of the seedling mounting table, for example, when the seedling mounting table has moved to the left or right end or the center position, inform the operator with a buzzer or the like, or set the seedling mounting table at that position. It can be stopped automatically. Further, for example, in a multi-row transplanter, when the moving end side of the seedling mounting table is folded, the folding operation can be performed by accurately stopping the seedling mounting table at the center position.

According to the second aspect of the present invention, when it is detected that the seedling mounting table has moved to the moving end in the moving direction, the stopping means for automatically stopping the movement of the seedling mounting table is provided. The seedling platform can be stopped accurately at the moving end. For this reason, for example, when replenishing seedlings at the ridge, it is possible to easily replenish the seedlings in a state where the seedling placing stand is stopped at one of the left and right moving ends.

The shifting operation of the moving speed of the seedling mounting table is performed by
For example, when the operation is performed by engaging a slide key attached to a key groove of a speed change shaft with a specific gear selected from a speed change gear group that idles, the speed change gear group is generally set at the moving end of the seedling mounting table. Since all keyways match,
If the seedling mounting table can be accurately stopped at the moving end, the above-described shift operation can be easily performed.

According to the third aspect of the present invention, when the seedling placing table moves to the moving end, the seedlings in the seedling placing section are transported downward from above by the vertical feeding means. When the driving is started, it can be detected that the seedling mounting table has moved to the moving end.

[Brief description of the drawings]

FIG. 1 is a side view of a riding rice transplanter to which the present invention is applied.

FIG. 2 is a diagram showing a power transmission path of a planting section.

3A is a cross-sectional front view showing an outline of a lateral feed drive mechanism, FIG. 3B is a side view thereof, and FIG. 3C is a side view of the lateral feed drive mechanism including a seedling mounting table.

FIG. 4 is a diagram showing an arrangement position of a detection switch.

FIGS. 5A, 5B, and 5C are diagrams illustrating an example of a circuit diagram for detecting a movement position of a seedling mounting table.

FIG. 6 is a diagram showing a connection relationship between a hydraulic pressure / planting lever and a planting clutch.

FIG. 7 is a side view showing a relationship between a seedling mounting table and a lateral feed drive mechanism.

FIGS. 8A and 8B are diagrams showing an embodiment in which the seedling mounting is stopped when it reaches the left end from the right end.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Riding rice transplanter 11 Seedling vertical feeder 14 Running body 20 Hydraulic / planting lever 22 Planting part 27 Seedling stand 28 Vertical feed belt 35 Transmission mechanism 46 Slide block 47 Cam 48 Arm 49 Shaft 50 Vertical feed lever 52a, 52b , 52c detection switch 57 CPU 58 motor 59 changeover switch 60 cam

Claims (3)

[Claims] 1. A seedling mounting table in which a plurality of seedling mounting portions for mounting seedlings are arranged in a moving direction, and a plurality of seedling mountings arranged below the seedling mounting portions corresponding to the seedling mounting portions, and transplanting the seedlings by planting claws. A transplanter comprising: a case unit; and a detecting unit configured to detect that the seedling mounting table has moved to a predetermined position in the moving direction with respect to the planting case unit. . 2. A stopping means for automatically stopping the movement of the seedling mounting base based on detection by the detection means that the seedling mounting base has moved to the moving end in the moving direction. The transplanting machine according to claim 1, wherein: 3. The method according to claim 1, wherein the detecting unit drives a vertical feeding unit that conveys the seedlings of the seedling placing unit from above to below based on the movement of the seedling placing table to the moving end in the moving direction. 3. The transplanter according to claim 1, wherein the position of movement of the seedling mounting table is detected.