JP2019176827A - Seedling planting device - Google Patents

Abstract

To provide a seedling planting device capable of planting an intended amount of seedlings.SOLUTION: A seedling planting device is provided in a rice planting machine. The seedling planting device has: a seedling platform 10 capable of placing the matted seedling; a sliding guide rail 18 for supporting a lower part of the seedling platform 10 in a slide-guiding manner in the left and right directions; a horizontal feed mechanism for reciprocating a seedling platform 10 supported to the sliding guide rail 18 in the left and right directions; a seedling take-out opening 18a provided at the sliding guide rail 18; a vertical feed mechanism 10a for vertically feeding the matted seedling to the height of the seedling take-out opening 18a; a planting arm 11 configured to take out the seedling from the seedling take-out opening 18a and plant it in the paddy field while moving a predetermined trajectory; and a seedling picking amount motor M1 controlled by a control mechanism, and capable of changing the height of seedling take-out opening 18a by vertically moving at least the sliding guide rail 18.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a seedling planting device provided in a rice transplanter.

  As such a rice transplanter, for example, a riding type rice transplanter described in Patent Document 1 is already known. In Patent Document 1, a seedling platform (in the literature, “seedling platform [10]”) on which seedlings are placed, and a planting arm (in the literature, “10” in the literature) that takes out the seedlings placed on the seedling platform and places them on the rice field. And a planting arm [8] "), and a riding type rice transplanter provided with a seedling planting device (in the literature," seedling planting device [5] ") is disclosed. In the riding type rice transplanter described in Patent Document 1, a seedling removal amount changing mechanism (in the literature, “driven gear [16], operation arm [ 43] "and the like, and a seedling removal amount actuator (in the literature," electric motor [14] ") for driving the seedling removal amount changing mechanism.

JP 2017-55704 A

  In the riding type rice transplanter described in Patent Document 1, there is room for improvement in changing the amount of seedlings to be taken.

  This invention is made | formed in view of the said situation, Comprising: It aims at providing the seedling planting apparatus which can change the amount of seedlings of seedlings appropriately.

  In order to achieve the above-mentioned object, the seedling planting apparatus according to the present invention is characterized in that the seedling planting apparatus is provided in a rice transplanter, a seedling platform on which mat-like seedlings can be placed, and the seedling platform. Provided on the sliding guide rail, a sliding guide rail that supports the lower part so that it can slide and slide in the left-right direction, a lateral feed mechanism that reciprocates the seedling support supported by the sliding guide rail in the left-right direction, and Configured to extract the seedling from the seedling extraction port and plant it on the rice field while moving a predetermined trajectory, and a vertical feed mechanism that vertically feeds the matted seedling to the height of the seedling extraction port. And a drive mechanism that is controlled by a control mechanism and can change the height of the seedling outlet by moving at least the sliding guide rail in the vertical direction.

  According to the above-described configuration, the seedling is taken out from the mat-like seedling when the planting arm moves through a predetermined trajectory and passes through the seedling extraction port. At that time, the control mechanism controls the drive mechanism. Since the height of the seedling extraction port is changed, the position where the planting arm passes through the seedling extraction port is relatively changed, so that the amount of seedling that the planting arm takes out from the seedling platform, that is, the amount of seedling removal is appropriate. Will be changed.

  In the present invention, when the control mechanism moves the seedling extraction port to a target height existing between the upper limit height and the lower limit height of the mechanical movable range, the current height of the seedling extraction port is determined. Is higher than the target height, it is preferable to control the drive mechanism so that the seedling outlet is moved to the target height after being moved to a height lower than the target height.

  According to the above configuration, when the seedling extraction port is moved to the target height, if the current height of the seedling extraction port is higher than the target height, the target is first moved to a height lower than the target height. Since it can be moved to the height, it is possible to reduce the influence of the drive mechanism, such as a gear backlash, and to stop the seedling outlet at the target height with high accuracy. Therefore, the amount of seedlings can be changed with high accuracy.

  In the present invention, it is preferable that the lateral feed mechanism is configured such that the lateral feed amount of the seedling stage can be changed.

  According to the above configuration, since the lateral feed amount of the seedling table, that is, the reciprocating amount of the left and right direction of the seedling table can be changed, the planting arm is combined with the height of the seedling outlet, The amount of seedlings taken out from can be changed finely. The lateral feed amount may be configured to be controlled by a control mechanism, or may be configured to be changed by an artificial operation.

  In the present invention, the control mechanism includes any one of a lateral feed amount of the seedling platform by the lateral feed mechanism, a current height of at least the seedling outlet, or a vertical feed amount of the mat-like seedling by the vertical feed mechanism. It is preferable that the actual consumption of the seedling can be calculated from the heel.

  According to the above configuration, the actual consumption of the seedling can be calculated from the horizontal feed amount and the current height (or vertical feed amount) of the seedling outlet, so that the actual consumption of the seedling can be grasped. . The consumption of seedlings is the amount of seedlings removed per unit time. In order to realize this, for example, a detection mechanism for detecting the lateral feed amount is preferably provided, so that the control mechanism can automatically detect the lateral feed amount detected by the detection mechanism. The lateral feed amount may be changeable or may not be changeable.

  In the present invention, it is preferable that the control mechanism is configured to be able to control the drive mechanism based on the actual consumption amount and the target consumption amount.

  According to the above configuration, the actual consumption amount and the target usage amount can be compared, and the consumption amount of the seedling can be changed according to the difference. Therefore, the consumption amount of the seedling can be appropriately managed. For example, if the amount of mat-shaped seedlings used per field is determined in advance, if the seedling consumption pace is fast, the seedling consumption is reduced, and if the seedling consumption pace is slow Control that increases the consumption of seedlings becomes possible.

  In the present invention, it is preferable that the control mechanism is configured to notify an operator of the actual consumption amount.

  According to the above-described configuration, it is possible to make the worker determine whether to increase or decrease the amount of seedling consumed according to the consumption pace of the seedling. The notification is performed by, for example, displaying an image on a liquid crystal screen provided in the rice transplanter, turning on or blinking an indicator using an LED, or the like, using a speaker or a buzzer.

  In the present invention, it is preferable that the control mechanism is configured to be able to control the drive mechanism based on an instruction from the operator.

  According to the above-described configuration, the control mechanism can control the drive mechanism to increase or decrease the consumption of seedlings based on instructions from the worker.

  In the present invention, it is preferable that the control mechanism is configured to be able to transmit the actual consumption amount to a control unit outside the seedling planting apparatus.

  According to the above-described configuration, for example, when a rice transplanter is automatically controlled without an operator boarding, or when the field, crop, work information, etc. are centrally managed, the outside of the control mechanism Communicating with the control unit in the control unit to automatically determine based on the program that the control unit has, or to determine whether the worker outside the rice transplanter will increase or decrease the consumption of the seedling according to the consumption rate of the seedling You can make it.

  In the present invention, it is preferable that the control mechanism is configured to be able to control the drive mechanism based on an instruction transmitted from the control unit.

  According to the above-described configuration, for example, when a rice transplanter is automatically controlled without an operator boarding, or when the field, crop, work information, etc. are centrally managed, the outside of the control mechanism The control mechanism can control the drive mechanism to increase / decrease the consumption of seedlings based on the instruction from the control unit.

It is a right view which shows a riding type rice transplanter. It is a top view which shows a riding type rice transplanter. It is a right view which shows a seedling planting apparatus. It is a top view which shows a seedling planting apparatus. It is right side sectional drawing which shows a seedling removal amount change mechanism and a seedling removal amount motor. It is explanatory drawing when changing the consumption of seedlings to the side with much. It is explanatory drawing when changing the consumption of a seedling to the side with few. It is explanatory drawing of a control apparatus.

  EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated based on drawing. In the following description, the direction of the arrow F is “front” (see FIGS. 1 and 2) and the direction of the arrow B is “rear” (see FIGS. 1 and 2) in a passenger-type rice transplanter that is an example of a rice transplanter. ), The direction of the arrow L is “left” (see FIG. 2), and the direction of the arrow R is “right” (see FIG. 2).

[Overall configuration of riding rice transplanter]
As shown in FIGS. 1 and 2, the riding rice transplanter includes a pair of left and right front wheels 1, a pair of left and right rear wheels 2, a body frame 3, a driving unit 4, and a fertilizer for supplying fertilizer to the rice field. 5 and a seedling planting device 6 for planting seedlings on the rice field. The driving unit 4 is provided with a driver seat 7 on which a driver is seated and a steering handle 8 for a steering operation.

[Seedling planting equipment]
As shown in FIGS. 1 to 5, the seedling planting device 6 is supported by a rear portion of the body frame 3 through a link mechanism 9 so as to be movable up and down. In this embodiment, the seedling planting device 6 is configured by an eight-row planting type seedling planting device. However, the number of planting strips of the seedling planting device 6 is not limited to eight.

  The seedling planting device 6 includes a seedling platform 10 on which mat-shaped seedlings for eight strips are placed, a vertical feed mechanism 10a provided on each of the seedling platforms of the seedling platform 10, a planting arm 11, and a feed A case 12, a planting transmission case 13, a rotating case 14, a float 15 and the like are provided. The feed case 12 and the planting transmission case 13 are supported by a horizontal frame 17 extending in the left-right direction at the lower part of the seedling planting device 6.

  The power of a power source (not shown) such as an engine supported by the body frame 3 of the riding type rice transplanter is driven by a hydrostatic continuously variable transmission (not shown) and a transmission between stocks (not shown). Then, it is transmitted to the feed case 12 through the planting clutch and the PTO shaft, and is distributed from the feed case 12 to each part of the seedling planting device 6 so that each part is driven.

  The seedling planting device 6 reciprocates in the left-right direction the sliding guide rail 18 that supports the lower part of the seedling platform 10 so as to be slidable in the left-right direction, and the seedling platform 10 supported by the sliding guide rail 18. A lateral feed mechanism (not shown) is provided. The lateral feed mechanism is configured to be driven by power transmitted from the feed case 12.

  The lateral feed mechanism is configured to be able to change the lateral feed amount of the seedling table 10. The amount of seedling taken by the planting arm 11 is changed by increasing / decreasing the lateral feed amount per seedling taken by the planting arm 11. The seedling planting device 6 is provided with a lateral feed amount sensor (not shown) as a detection mechanism for detecting the lateral feed amount of the seedling placing stand 10 by the lateral feed mechanism.

  The sliding guide rail 18 is provided with a seedling extraction port 18 a for taking out the seedling from the mat-like seedling placed on the seedling placing stand 10. Both left and right ends of the sliding guide rail 18 are supported by a support portion 19 so as to be slidable in the vertical direction. The support portion 19 is configured such that a support rod 19b connected downward to the sliding guide rail 18 is inserted into a bracket 19a connected to the lateral side surface of the planting transmission case 13 so as to be slidable up and down.

  The vertical feed mechanism 10a is driven by a predetermined amount when the seedling stage 10 reaches the right end or the left end of the reciprocating lateral feed drive, and the mat-like seedling placed on the seedling stage 10 is transferred from the seedling outlet 18a. It is fed vertically to the height.

  The rotating case 14 is configured to be driven by the power transmitted from the feed case 12, and the planting arm 11 provided in the rotating case 14 moves a predetermined trajectory while rotating the rotating case 14. The seedling is taken out from the take-out port 18a and planted on the rice field.

[Seedling change mechanism, seedling removal motor]
The seedling planting device 6 includes a seedling removal amount changing mechanism 20 that moves the sliding guide rail 18 in the vertical direction. When the seedling removal amount changing mechanism 20 moves the sliding guide rail 18 in the vertical direction, the height of the seedling extraction port 18a with respect to the planting arm 11 is changed, and the amount of seedling that the planting arm 11 takes out from the seedling placing table 10 is changed. Be changed.

  The seedling removal amount changing mechanism 20 includes a seedling removal amount motor M1 (driving mechanism according to the present invention) that drives the seedling removal amount changing mechanism 20, and a speed reduction mechanism (illustrated) that outputs the driving force of the seedling removal amount motor M1 from the pinion gear 21. (Not shown), a sector-shaped sector gear 22, a seedling-removing lever 23, a seedling-removing adjusting rod 24, a connecting stay 25, and a plurality of linkage pieces 26 are provided.

  In the present embodiment, the seedling removal amount motor M1 is an electric motor. However, the seedling removal amount motor M1 is not limited to an electric motor. The drive mechanism according to the present invention may be composed of other motors or actuators such as hydraulic cylinders and electric cylinders.

  The sector gear 22 meshes with a pinion gear 21 that outputs the driving force of the seedling removal amount motor M1. As the pinion gear 21 rotates, the pinion gear 21 can swing around the axis X1 extending in the left-right direction.

  A long hole 23 a is formed at the front end of the seedling collecting lever 23. A pin 22a protruding from the sector gear 22 is inserted through the long hole 23a.

  The swing position of the sector gear 22 is detected by a position sensor (seedling amount sensor) 27 provided on the support bracket 37. The seedling removal amount sensor 27 is provided with a sensor arm 27a for detection. A link 28 is provided between the sensor arm 27a and the sector gear 22 to transmit the swing of the sector gear 22 to the sensor arm 27a. The angle of the sector gear 22 detected by the seedling removal amount sensor 27 is detected and input to the control device 40 described later.

  The seedling adjustment rod 24 is supported on the upper part of the planting transmission case 13 so as to be rotatable about an axis X2 extending in the left-right direction of the machine body. The seedling collection adjusting rod 24 is connected to the rear portion of the seedling collection lever 23 through a connection stay 25. The linkage piece 26 is connected to the sliding guide rail 18 so as to be linked. The connecting stay 25 and the connecting piece 26 are connected to the seedling adjustment rod 24 so as to be rotatable together with the seedling adjustment rod 24.

  With such a configuration, the driving force of the seedling removal amount motor M1 is output from the pinion gear 21, whereby the sector gear 22 swings around the axis X1. Then, the swinging force of the sector gear 22 is transmitted to the seedling picking lever 23 via the pin 22a and the long hole 23a, and the seedling picking lever 23, the connecting stay 25, the seedling picking adjustment rod 24, and the linkage piece 26 are rotated around the axis X2. And the sliding guide rail 18 is slid up and down via the support portion 19.

  As shown in FIG. 5, the planting arm 11 passes through the seedling extraction port 18 a of the sliding guide rail 18 along a certain locus. Therefore, when the sliding guide rail 18 slides downward, the seedling extraction port 18a moves downward. If it does so, it will pass through the seedling extraction port 18a in the state which the planting arm 11 entered deeply into the seedling extraction port 18a, and will extract a seedling from the seedling mounting stand 10, As a result, the amount of seedling removal increases.

  On the other hand, when the sliding guide rail 18 moves upward, the seedling extraction port 18a moves upward. If it does so, it will pass through the seedling extraction port 18a in the state which the planting arm 11 entered the seedling extraction port 18a shallowly, and will extract a seedling from the seedling mounting stand 10, As a result, the amount of seedling removal decreases.

  Note that when the seedling removal amount is changed as described above, the vertical feeding amount of the mat-like seedling by the vertical feeding mechanism 10a is also changed. Depending on the change of the seedling removal amount, mechanically interlocked or electrically interlocked based on an instruction from the control device 40, when the amount of seedling removal is small, the vertical feed amount by the vertical feed mechanism 10a Is changed to a smaller side, and when the amount of seedling removal is larger, the vertical feeding amount by the vertical feeding mechanism 10a is changed to the larger side.

〔Control device〕
As shown in FIG. 8, the riding type rice transplanter includes a control device 40 that controls each part of the riding type rice transplanter. In addition, the control apparatus 40 may be provided in the body side of a riding type rice transplanter, and may be provided in the seedling planting apparatus 6 side.

  The control device 40 includes a seedling removal amount control unit 41 that adjusts the amount of seedling planting in the seedling planting device 6 by a peripheral device such as a microcomputer or a memory that stores a program executed by the microcomputer, an external control, and the like. Each function block such as a communication unit 42 including a transmission unit and a reception unit that transmits and receives signals to and from the unit 50 is provided, and an operator's operation on the steering handle 8 of the driving unit 4, a lateral feed amount sensor, a seedling A predetermined program is executed based on signals input from various sensors such as the picking amount sensor 27, and the driving source of the riding type rice transplanter, the seedling planting device 6, and other units are controlled. Accordingly, in the present embodiment, a part of the control device 40 constitutes a control mechanism that drives the seedling removal amount motor M1.

  The control device 40 calculates the actual consumption amount of the seedling from the lateral feed amount of the seedling placing stand 10 by the lateral feed mechanism detected by the lateral feed amount sensor and the current height of the seedling extraction port 18a, and communicates this. The seedling amount motor M <b> 1 is configured to be controllable based on an instruction transmitted to the external control unit 50 via the unit 42 and transmitted from the control unit 50.

  For example, when the target consumption amount transmitted from the control unit 50 is larger than the actual consumption amount, the control device 40 controls the seedling removal amount motor M1 so that the consumption amount of the seedling becomes the target consumption amount. As described above, the seedling extraction port 18a is operated to the lower side and changed to the side where the seedling removal amount is large.

  When moving the seedling extraction port 18a to a target height that is lower than the current height of the seedling extraction port 18a, the control device 40 moves the seedling extraction port 18a to a height lower than the target height, as shown in FIG. The seedling removal amount motor M1 is controlled so as to be moved to the target height after being moved. Thereby, the influence of the backlash of the sector gear 22 etc. which the seedling removal amount changing mechanism 20 has can be reduced.

  For example, when the target consumption amount transmitted from the control unit 50 is smaller than the actual consumption amount, the control device 40 controls the seedling removal amount motor M1 so that the consumption amount of the seedling becomes the target consumption amount. Further, as described above, the seedling extraction port 18a is operated to the upper side and changed to the side where the amount of seedling removal is small.

  When moving the seedling extraction port 18a to a target height that is higher than the current height, the control device 40 moves the seedling extraction port 18a from the current height to the target height, as shown in FIG. The seedling removal amount motor M1 is controlled so that

  The control device 40 may control the seedling removal amount motor M1 so that the operating speed of the sliding guide rail 18 to the ascending side and the operating speed of the sliding guide rail 18 to the descending side are equal. Then, the seedling amount motor M1 may be controlled so that the operating speed is different between the ascending side and the descending side, for example, so that the operating speed is lower than that on the ascending side. In addition, in changing the height of the seedling extraction port 18a, the seedling removal amount changing mechanism 20 may be configured to move only the sliding guide rail 18 up and down, or the sliding guide rail 18 and The seedling stage 10 may be configured to move up and down integrally.

  Note that the control device 40 may be configured to notify the operator of the actual consumption calculated as described above. Note that the notification includes, for example, image display on a liquid crystal screen (not shown) provided in the operation unit 4, lighting or blinking of an indicator (not shown) by an LED, etc., ringing by a speaker or a buzzer (not shown), etc. Is done by. The control device 40 may be configured to control the seedling removal amount motor M1 and increase / decrease the amount of seedling consumption based on an instruction from the worker.

  In the above-described embodiment, the control device 40 calculates the actual consumption of seedlings from the lateral feed amount of the seedling platform 10 by the lateral feed mechanism and the current height of the seedling outlet 18a. The amount may be calculated from the lateral feed amount of the seedling platform 10 by the lateral feed mechanism and the vertical feed amount of the mat-like seedling by the vertical feed mechanism 10a. Further, the control device 40 determines the actual consumption amount of the seedlings, the lateral feed amount of the seedling platform 10 by the lateral feed mechanism, the current height of the seedling take-out port 18a, and the vertical feed amount of the mat-like seedlings by the vertical feed mechanism 10a. It may be calculated from

  Seeds (direct sowing machine), fertilizer (rice transplanter, direct sowing machine, riding management machine, special fertilizer application machine), chemicals (rice transplanter, direct seeding machine, riding management machine, special application machine), herbicide (rice transplanter, direct seeding machine) , Passenger management machines, and drug administration machines) can calculate the actual consumption from the feed drive control amount and the weight detection of the material storage tank, etc. If there is a difference between this actual consumption and the target consumption, The shift can be eliminated by changing the feeding drive control amount.

  In addition, this invention is not limited to the said embodiment and said another embodiment, Other various changes are possible.

  The present invention does not include not only an eight-row type rice transplanter but also a six- and four-row seedling planting machine, a riding type rice transplanter not equipped with a leveling device, and a rotating case. It can also be applied to a riding type rice transplanter equipped with a seedling planting device equipped with a crank type planting arm.

6: Seedling planting device 10: Seedling platform 10a: Vertical feed mechanism 11: Planting arm 18: Sliding guide rail 18a: Seedling outlet 40: Control device (control mechanism)
50: Control unit M1: seedling removal amount motor (drive mechanism)

Claims (9)

A seedling planting device provided in a rice transplanter,
A seedling stage on which mat-like seedlings can be placed;
A sliding guide rail that supports the lower part of the seedling platform so that it can slide in the left-right direction;
A lateral feed mechanism for reciprocally moving the seedling support supported by the sliding guide rail in the left-right direction;
A seedling outlet provided in the sliding guide rail;
A longitudinal feed mechanism for longitudinally feeding the mat-like seedlings to the height of the seedling outlet;
A planting arm configured to take out a seedling from the seedling outlet and plant it on a rice field while moving a predetermined locus,
A seedling planting apparatus, comprising: a drive mechanism controlled by a control mechanism and capable of changing the height of the seedling outlet by moving at least the sliding guide rail in the vertical direction.   When the control mechanism moves the seedling extraction port to a target height existing between the upper limit height and the lower limit height of the mechanical movable range, the current height of the seedling extraction port is less than the target height. 2. The seedling planting apparatus according to claim 1, wherein when the height is high, the drive mechanism is controlled to move the seedling extraction port to the target height after moving the seedling extraction port to a height lower than the target height.   The seedling planting apparatus according to claim 1, wherein the lateral feed mechanism is configured to be capable of changing a lateral feed amount of the seedling platform.   The control mechanism includes a lateral feed amount of the seedling platform by the lateral feed mechanism and at least a current height of the seedling take-out port or a vertical feed amount of the mat-like seedling by the vertical feed mechanism. The seedling planting apparatus as described in any one of Claim 1 to 3 comprised so that real consumption can be calculated.   The seedling planting apparatus according to claim 4, wherein the control mechanism is configured to be able to control the drive mechanism based on the actual consumption amount and the target consumption amount.   The seedling planting apparatus according to claim 4 or 5, wherein the control mechanism is configured to notify an operator of the actual consumption amount.   The seedling planting apparatus according to claim 6, wherein the control mechanism is configured to be able to control the drive mechanism based on an instruction from the operator.   The seedling planting device according to any one of claims 4 to 7, wherein the control mechanism is configured to transmit the actual consumption amount to a control unit outside the seedling planting device.   The seedling planting apparatus according to claim 8, wherein the control mechanism is configured to be able to control the drive mechanism based on an instruction transmitted from the control unit.

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