JP2009065941A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter of simplified structure, enabling an agrochemical to be uniformly and surely applied to seedlings and capable of confirming the status of agrochemical applications to seedlings, prior to conducting a planting operation for the seedlings. <P>SOLUTION: The transplanter has a constitution, such that from the front of a traveling machine body 3, a planting implement 6 is equipped with a conveying apparatus 7 for conveying and feeding preliminary seedlings Y; position detection means A, B, C and D for detecting the positions of preliminary seedlings Y along the conveying path of the conveying apparatus 7; and a waiting means 36 for waiting preliminary seedlings Y at waiting positions P1 along the conveying path. In this transplanter, downstream of these waiting positions P1, an agrochemical applicator 27 is arranged so as to form positions P2 for agrochemical-applying operations. Based on position detection by the means A, B, C and D, an agrochemical application control is conducted by a relevant control section 48; and concurrently, preliminary seedlings Y are made to wait at the waiting positions P1, while the preliminary seedlings Y undergo agrochemical application by the agrochemical applicator 27; and when the preliminary seedlings Y become conveyable downstream of these positions P2, after completing this agrochemical application by the agrochemical applicator 27, the next preliminary seedlings Y at the waiting positions P1 are fed to the positions P2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a transplanter provided with a drug application device for drug application to seedlings.

A transplanting machine shown in Patent Document 1 including a traveling machine body, a planting work machine connected to the rear of the traveling machine body, a medicine device that applies medicine to seedlings, and a control unit that performs medicine control of the medicine apparatus is known. ing. The transplanting machine having the above-described configuration is highly convenient because the seedling can be automatically applied by the drug application device during the operation of the transplanting machine.
JP 2005-185229 A

  However, the transplanter described in the above document is intended to apply medicine to the seedling that slides downward on the seedling platform of the planting work machine, and it is difficult to uniformly and reliably apply the medicine to the seedling. There are challenges.

  In addition, the transplanter of the above document has a complicated structure because the drug application device moves in the horizontal direction for the seedlings arranged side by side on the seedling platform of the planting work machine, There is also a problem that the manufacturing cost increases.

Furthermore, since the transplanter of the above document is administered immediately before the seedling is planted in the field, it is difficult to confirm the seedling application status before performing the planting operation, and there remains a problem.
The present invention solves the above-described problems, and provides a transplanter that can uniformly and surely apply seedlings, has a simplified structure, and can check the seedling application status before planting work. Objective.

  In order to solve the above-described problems, the transplanter of the present invention includes a traveling machine body 3, a planting work machine 6 connected to the rear of the traveling machine body 3, a drug application device 27 for applying seedlings, and a drug application device 27. In the transplanting machine provided with the control unit 48 for performing the medication control, the transport device 7 for transporting the preliminary seedling Y from the front of the traveling machine body 3 to the planting work machine 6, and the preliminary seedling Y in the transport path of the transport device 7 Position detecting means A, B, C, and D for detecting the position of the first and second standby means 36 for waiting the preliminary seedling Y at the standby position P1 of the transport path, and downstream of the standby position P1 in the transport path. The prescription device 27 is arranged so that the work position P2 for performing the prescription operation is formed, and the control unit 48 performs the prescription control based on the position detection by the position detection means A, B, C, D, and the prescription device 27 During preparatory seedling Y treatment, reserve seedling When the preparatory seedling Y is completed and the preparatory seedling Y can be transported to the downstream side of the work position P2, the next preparatory seedling Y at the standby position P1 is moved to the work position. It is characterized by being supplied to P2.

  Second, the standby means is a stopper 36 that protrudes so as to block the conveyance path and receives the preliminary seedling Y.

  According to the transplanter of the present invention configured as described above, while the preparatory seedling is being performed on the spare seedling at the work position on the transport path of the transport device, the next spare seedling is moved to the work position. Therefore, the seedling device can uniformly and reliably apply the medicine to the seedling.

  In addition, the structure can be simplified as compared with the one in which the medicine application device moves in the lateral direction to the seedlings arranged side by side on the seedling platform of the planting work machine.

  Furthermore, since the seedling is not applied immediately before planting the field, it is possible to check the seedling application status before performing the planting operation.

  1 and 2 are a plan view and a side view of a riding rice transplanter to which the transplanter of the present invention is applied. The riding rice transplanter includes a traveling machine body 3 having front and rear wheels 1 and 2, a planting work machine 6 connected to the traveling machine body 3 through a lifting link 4, and a seedling box B with a mat seedling M. And a preliminary seedling placing stand 7 (conveying device) in the front-rear direction for transporting the preliminary seedling Y, which is stored in the container, from the front of the traveling machine body 3 to the rear end of the traveling machine body 3.

  The traveling machine body 3 is provided with a bonnet 8 on the front side, a pair of left and right front steps 9 are provided on both sides of the bonnet 8, and a seat 11 and a driver's seat 12 including various operation tools are provided behind the bonnet 8, respectively. Yes. A step 13 is formed on the floor of the driver seat 12, and a rear step 14 for supplying seedlings is formed on the left and right sides of the driver seat 12.

  The planting work machine 6 has a front / rear / low-seed seedling platform 16 formed on the entire rear surface. A mat seedling M is juxtaposed in the lateral direction on the seedling mount 16. The seedlings on the seedling table 16 are transferred to the lower end of the seedling table 16 by the inclination of the seedling table 16 and the action of the vertical feed mechanism 17 and scraped by the planting unit 18 installed below the seedling table 16. And planted in the field.

  The preliminary seedling platform 7 is provided on both sides of the traveling machine body 3. Each preliminary seedling platform 7 is supported by the traveling machine body 3 so as to incline downward toward the rear via a pair of front and rear columns 19, 19 projecting upward from corresponding side portions of the traveling machine body 3. ing. By this inclination, it becomes easy to slide the spare seedling Y from the front of the traveling machine body 3 to the rear end of the traveling machine body 3. The mat seedling M of the preliminary seedling Y at the rear end portion of the traveling machine body 3 is sequentially placed on the seedling placing table 16 of the planting work machine by the operator.

Next, based on FIG. 2 and 3, the structure of the reserve seedling stand 7 is explained in full detail.
FIG. 3 is a plan view of the preliminary seedling stage. The spare seedling stand 7 is divided into three seedlings, a front seedling stand 21F (movable seedling stand), a central seedling stand 21C (fixed seedling stand), and a rear seedling stand 21R (movable seedling stand). Each of the seedling stands 21F, 21C, 21R is formed by connecting left and right side plates 22, 22 extending in the front-rear direction by a connecting bar 23 in the left-right direction, and having a substantially rectangular shape in plan view. A roller shaft 24 is supported between the left and right side plates 22 so as to be rotatable in the left-right direction. Rollers 26 are provided at both left and right ends of the roller shaft 24, and a plurality of the rollers 26 are provided side by side in the front-rear direction to form a conveyance surface (conveyance path).

  The center seedling stand 21C is fixed to the traveling machine body 2 via the front and rear support columns 19 and 19. The rear end portion of the front seedling stand 21F is supported by the front end portion of the central seedling stand 21C so as to be vertically rotatable, and the front end portion of the rear seedling stand 21R is supported by the rear end portion of the central seedling stand 21C so as to be vertically rotatable. Yes.

  By the above support structure, the front seedling table 21F and the rear seedling table 21R can be switched between an unfolded posture that is deployed substantially in line with the central seedling table 21C and a retracted posture that is folded above the central seedling table 21C. Composed. When the front seedling table 21F and the rear seedling table 21F are simultaneously switched to the retracted posture, the rear seedling table 21R is first folded above the central seedling table 21C, and then the front seedling table 21F is moved to the rear seedling table 21R. Folded over and folded.

  Each of the left and right spare seedling platforms 7 is provided with a medicine application device 27 for applying medicine to the seedlings of the preliminary seedling Y during the slide supply process. The prescription device 27 is supported by left and right brackets 28 and 28 projecting upward from the left and right side plates 22 and 22 of the central seedling stand 21C, respectively, so as to be able to rotate back and forth. With the above support structure, the medicine application device 27 is configured to be switchable between a lying posture in which the medicine device 27 lies backward and a standing posture in which it rises upward. The medicine application device 27 in the standing posture spreads the medicine on the preliminary seedling Y on the transport surface of the central seedling stand 21C. On the other hand, when the front seedling table 21F or the rear seedling table 21R is changed from the deployed position to the storage position, the drug application device 27 is changed to the lying posture, and the drug application device 27 and the front seedling table 21F or the rear seedling table are changed. Prevents contact with 21R.

  The prescription device 27 is supported by the upper end portions of the left and right brackets 28, 28, and the left and right brackets 28, 28 and the lower end portion of the prescription device 27 form a substantially inverted U-shaped gate 29 in front view. . The preliminary seedling Y that is slid and supplied from the front seedling stand 21F to the central seedling stand 21C passes through the gate 29 and is conveyed downstream.

  The drug application device 27 includes a hopper 31 (accommodating unit) that stores a drug, a spray unit 32 (medicine unit) having a spray port formed at the tip, and a drug actuator for sending the drug in the hopper 31 to the spray unit 32. And a weeding body 34 having a substantially U shape when viewed from the front. The weeding body 34 lays down the seedlings of the preliminary seedling Y that passes through the gate 29 and is conveyed downstream, and exposes the soil portion of the mat seedling M. The spraying part 32 is extended obliquely downward to the rear and the spraying port faces downward, and the medicine is sprayed onto the soil part of the mat seedling M exposed by the above-mentioned weed body 34, thereby applying the medicine to the seedlings. Do work. That is, a work position P2 for performing a medicine spraying work (medicine work) is formed below the spraying unit 32.

  A pair of left and right seedling stoppers 36, 36 are provided as standby means for waiting for the preliminary seedling Y on the front end of the center seedling stand 21C and on the upstream side (front, upstream of conveyance) of the work position P2. The left and right seedling stoppers 36, 36 are supported between the left and right side plates 22, 22 of the central seedling table 21C via a single left / right stopper shaft 37 so as to be rotatable up and down, and are always rotated integrally in the same posture. It is configured to move. With the support structure, the left and right seedling stoppers 36 and 36 can be changed in posture between an ascending posture and a descending posture. Note that the posture switching between the left and right seedling stoppers 36 and 36 is performed by a standby actuator 38 that is attached to the base end portion of one seedling stopper 36 and that drives the seedling stopper 36 to rotate up and down by an expansion and contraction operation.

  Since each seedling stopper 36 in the raised posture protrudes from the conveyance surface and receives the preliminary seedling Y, the preliminary seedling Y is in a standby state at a position upstream of the work position P2 (standby position P1). On the other hand, since each seedling stopper 36 in the lowered posture is stored below the transport surface, the preliminary seedling Y passes through the standby position P1 and is introduced into the work machine position P2.

  The front and rear lengths of the preliminary seedlings Y are formed slightly shorter than the front and rear lengths of the seedling stands 21F, 21C, and 21R. It is conveyed backward. The conveyor 39 includes a pair of left and right resin-made conveyor belts 41 and 41 that are difficult to slip with respect to the preliminary seedling Y, and is installed immediately downstream of the stopper 36.

  A left and right driven shaft 42 and a drive shaft 43 are supported side by side between the left and right side plates 22 and 22 of the central seed bed 21C, and a pair of left and right driven pulleys 44 and 44 are supported on the driven shaft 42. A pair of left and right drive pulleys 46, 46 are integrally attached and fixed to the drive shaft 43, respectively. The left conveying belt 41 is wound around the left driving pulley 46 and the driven pulley 44, and the right conveying belt 41 is wound around the right driving pulley 46 and the driven pulley 44, thereby constituting a conveyor 39. Then, the left and right transport belts 41 are driven at the same speed by a conveyor drive motor 47 which is a transport actuator.

  The conveyor 39 having the above-described configuration is such that when one end of the seedling box B of the preliminary seedling Y reaches the most upstream side of the transport belt 41, the other end of the seedling box B of the preliminary seedling Y reaches the most downstream side of the transport belt 41. The preliminary seedling Y is conveyed downstream at a constant speed. Accordingly, since the preliminary seedling Y is transported at a constant speed during the drug spraying operation, the seedling drug spraying operation can be performed uniformly and reliably.

  Since this riding rice transplanter automatically performs drive control (medicine control, drug spray control) of the spraying motor 33, the standby actuator 38 and the conveyor drive motor 47 described above, the position of the preliminary seedling Y on the preliminary seedling platform 7 is detected. And a control unit 48 (see FIG. 4) configured by a microcomputer or the like.

  As the position detection means, four seedling detection switches A, B, C, and D are provided. The seedling detection switch A detects that the preliminary seedling Y is passing the standby position P1, the seedling detection switch B detects that the preliminary seedling Y is passing the work position P2, and the seedling detection switch C is the standby The seedling Y has detected that the seedling Y has passed the working position P2 and reached the front end of the rear seedling table 21R and the chemical spraying operation has been completed. It is for detecting that the most downstream position of the seedling stage 7 has been reached.

  FIG. 4 is a control block diagram of the passenger rice transplanter. On the input side of the control unit 48, a main switch 49 for turning on / off the power, an application amount adjusting dial 51, and the four seedling detection switches A, B, C, D are connected. On the other hand, to the output side of the control unit 48, a spray motor 33, a standby actuator 38, and a conveyor drive motor 47 are connected. And according to the input signal of the various apparatuses connected to the input side, drive control of the various apparatuses connected to the output side of the control part 48 is performed.

  The spraying amount adjustment dial 51 adjusts the driving speed of the conveyor 38 by dial operation, thereby adjusting the amount of medicine sprayed on the seedlings. By the way, if the driving speed of the conveyor 38 is increased, the amount of drug sprayed on the seedlings is decreased, and if the driving speed is decreased, the amount of drug sprayed on the seedlings is increased.

  FIG. 5 is a processing flow chart of the medication control of the passenger rice transplanter. When the control of the medicinal operation is started, the control unit 48 first proceeds to the process of step S1. In step S1, ON / OFF detection of the seedling detection switch A is performed. If the seedling detection switch A is ON (if the preliminary seedling Y is passing the standby position P1), the process proceeds to step S2. In step S2, the conveyor 39 is driven to switch the seedling stopper 36 to the lowered posture so that the preliminary seedling Y can be introduced into the work position P2, and the process proceeds to step S3. In step S1, if the seedling detection switch A is OFF, there is no standby seedling Y waiting at the standby position P1, so the process proceeds to step S3 without performing the process of step S2.

  In step S3, ON / OFF detection of the seedling detection switch B is performed. If the seedling detection switch B is ON (if the preliminary seedling Y is passing the work position P2), the process proceeds to step S4. In step S4, the spraying device 27 is driven by the spraying motor 33 and the conveyor 39 is driven in order to perform the drug application operation by the drug application device 27 while transporting the seedlings of the preliminary seedling Y passing the work position P2 at a constant speed. Let In addition, the seedling stopper 36 is switched to the raised position so that the next preliminary seedling Y is not introduced into the work position P2 during the preparatory seedling Y treatment, and the next preliminary seedling Y is waited at the standby position P1. I will let you. Then, the process proceeds to step S5. In step S3, if the seedling detection switch B is OFF, there is no need to perform a medicinal operation or the like, and the process proceeds to step S5 without performing the process of step S4.

  In step S5, ON / OFF of the seedling detection switch C is detected, and if it is ON (if the preliminary seedling Y has passed the work position P2 and has reached the front end of the rear seedling table 21R), step S6 is performed. Proceed to In step S6, ON / OFF detection of the seedling detection switch D is performed. If the seedling detection switch D is ON (if the preliminary seedling Y has reached the rear end of the rear seedling stand 21R), the process proceeds to step S7.

  When the process proceeds in the order of step S 5 → step S 6 → step S 7, the spare seedling Y (two spare seedlings Y in the present embodiment) accumulates on the downstream side of the preliminary seedling stand 7, and the downstream side by the conveyor 38. Cannot be transported to. For this reason, in step S7, the driving of the conveyor 38 and the prescription work of the prescription device 27 are stopped and the posture of the stopper 36 is switched to the ascending posture so that the next preliminary seedling Y is not introduced into the work position P2. . Then, the process returns to step S1.

  If the seedling detection switch C is OFF in step S5 or if the seedling detection switch D is OFF in step S6, the process returns to step S1 without performing the process in step S7.

Next, the effect | action of this riding rice transplanter of the said structure is demonstrated based on FIG.
As shown in FIG. 2, when there are only spare seedlings Y passing through the standby position P1 on the downstream side of the standby position P1, only the seedling detection switch A among the four seedling detection switches A, B, C, and D is Since it is in the ON state, the process is executed in the order of step S1, step S2, step S3, step S5, step S1, and so on, and the preliminary seedling Y is introduced into the work position P2.

  As shown in FIG. 6, the preparatory seedling Y that has completed the medicine operation downstream of the standby position P1 and has not reached the most downstream position of the preliminary seedling stand 7 is passing through the standby position P1 and the work position P2. If there are spare seedlings Y that are undergoing drug application, among the four seedling detection switches A, B, C, and D, the seedling detection switch A, the seedling detection switch B, and the seedling detection switch C are in the ON state. While the process is executed as S1, step S2, step S3, step S4, step S5, step S6, step S1, and so on, the introduction of the next preliminary seedling Y to the work position P2 is prohibited. The medication operation by the medication device 27 is continued.

As shown in FIG. 7, the preparatory seedling Y that has completed the medicine operation downstream of the standby position P1 and has reached the most downstream position of the preliminary seedling stand 7 and the medicine application work has been completed downstream of the standby position P1. In addition, when there is a spare seedling Y that has not reached the most downstream position of the preliminary seedling stand 7, among the four seedling detection switches A, B, C, and D, the seedling detection switch C and the seedling detection switch D are ON. Therefore, the processing is executed in the order of step S1, step S3, step S5, step S6, step S7, step S1, and so on, and the introduction of the next preliminary seedling Y to the work position P2 is prohibited. At the same time, the medication operation by the medication device 27 is also stopped.
As described above, the medication control according to the situation is performed.

It is a top view of the riding rice transplanter to which the transplanter of this invention is applied. It is a side view of the riding rice transplanter to which the transplanter of the present invention is applied. It is a top view of a preliminary seedling stand. It is a control block diagram of this riding rice transplanter. It is a processing flow figure of the medicine control of this riding rice transplanter. It is a side view of this transplanter showing other states. It is a side view of this transplanter showing other states.

Explanation of symbols

3 traveling machine body 6 planting work machine 7 spare seedling stand (conveyance device)
27 Medicine device 36 Seedling stopper (standby means, stopper)
48 Control part A Seedling detection switch (position detection means)
B Seedling detection switch (position detection means)
C Seedling detection switch (position detection means)
D Seedling detection switch (position detection means)
P1 Standby position P2 Working position Y Spare seedling

Claims (2)

  A traveling machine body (3), a planting machine (6) connected to the rear of the traveling machine body (3), a medicinal device (27) for medicating seedlings, and a control unit for performing medicinal control of the medicinal device (27) (48), a transport device (7) for transporting and supplying the preliminary seedling (Y) from the front of the traveling machine body (3) to the planting work machine (6), and the transport device (7) Position detection means (A), (B), (C), (D) for detecting the position of the preliminary seedling (Y) in the transport path, and the standby seedling (Y) in the standby position (P1) of the transport path A waiting means (36) for disposing the medicine, arranging the medicine application device (27) so that a work position (P2) for performing the medicine work is formed downstream of the waiting position (P1) in the transport path, (48) is a medicine control based on position detection by the position detection means (A), (B), (C), (D). While the preparatory seedling (Y) is applied by the prescription device (27), the preliminary seedling (Y) is kept in the standby position (P1), and the preparatory seedling (Y) is completed after the prescription treatment by the prescription device (27) is completed. ) Feeds the next preliminary seedling (Y) in the standby position (P1) to the work position (P2) when it can be transported downstream of the work position (P2).   The transplanting machine according to claim 1, wherein the waiting means is a stopper (36) that projects so as to block the conveyance path and receives the preliminary seedling (Y).

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