JP2009124947A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a seedling-carrying platform to be accurately stopped at the terminal end of right or left movement by an inexperienced operator, when the amount of matted seedlings, carried by the seedling-carrying platform which reciprocally moves in the right and the left directions, becomes a prescribed remaining amount, by being transplanted by a transplanting rod of a transplanting device, and new matted seedlings are required to be supplied from the upstream side of the matted seedlings remaining on the seedling-carrying platform, by suspending the transplanting operation once. <P>SOLUTION: An information means 82 emits a preliminary notice signal and a main signal for informing the timing of off-operation of a transplanting clutch 52 at the terminal end of the right or left movement of the seedling-carrying platform, when the shortage of the matted seedlings is detected by a seedling shortage sensor 87 is installed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a transplanter such as a riding type rice transplanter in which a planting machine is connected to the rear part of the machine body.

  Conventionally, in a riding type rice transplanter which is an example of a transplanter, a planting machine equipped with a seedling platform that reciprocates left and right is connected to the rear part of the machine so that it can be raised and lowered, and the mat seedling placed on the seedling platform When the seedling platform reaches the left and right moving ends, a predetermined amount is fed downward through the seedling vertical feed mechanism. And when the mat seedling placed on the seedling stand is planted by the transplanting rod of the planting device and reaches a predetermined remaining amount, detection by the seedling out sensor is made and a seedling out warning is issued, The operator must interrupt the planting operation and supply a new mat seedling from the upper side of the small amount of mat seedling remaining on the seedling mount.

  However, when a small amount of mat seedling remaining on the seedling platform as described above has been scraped to the midway in the width direction by the transplanting rod, the planting operation is interrupted, depending on the weight of the mat seedling to be replenished. A small amount of mat seedlings remaining on the seedling stand are likely to be crushed (bent) or tilted, and when planting is resumed in this state, the occurrence of missing stock due to scraping defects and variations in the number of seedlings per strain I was out.

Therefore, at the end of movement of the seedling platform that reciprocates left and right, automatic planting stopping means that automatically disengages the planting clutch that transmits the driving force to the planting device and the reciprocating mechanism of the seedling platform so that it can be freely turned. After the planting operation is started, when the mat seedling is replenished to the seedling platform, the seedling platform is stopped at the left and right moving ends by operating the planting automatic stop means. When the planting operation is resumed after the mat seedling is replenished to the seedling platform, the small amount of the mat seedling remaining on the seedling platform (bending) It is known that a tilting phenomenon is prevented from occurring, and a good planting operation that does not vary in the generation of missing lines or the number of seedlings per strain can be performed (see, for example, Patent Document 1). .
JP 2006-61074 A (page 9-11, FIG. 8 to FIG. 12)

  And in the thing of the above-mentioned patent document 1, if the planting apparatus by a planting automatic stop means and the operation | movement of a seedling stand are stopped accidentally during planting work, the part by which seedling planting will not be performed in a farm field. Therefore, during planting work, an automatic stop restricting means for restricting the stop of the operation of the planting part and the seedling platform based on the automatic planting stop means is provided, and an operation different from the operation for operating the planting clutch is performed. The alarm stop switch, which is a means, and the lifting operation lever that lifts and lowers the planting work machine are combined, and not only by operating the lifting operation lever, but also by combining both, the operation start operation and planting of the planting automatic stop means It is configured to prevent erroneous operation of the work start operation.

  However, the raising / lowering lever generally does not only raise / lower the planting work machine, but also turns the planting clutch on / off and swings out a pair of left and right drawing markers that form an indicator of the next planting process in the field scene. The operation to select the start order can also be performed, and an operator unfamiliar with the operation operation of the riding type rice transplanter has to learn a more complicated operation procedure of the lifting operation lever and may be confused. The planting automatic stopping means has a disadvantage that the control form becomes complicated.

The present invention, which aims to solve the above problems, includes a seedling platform that reciprocates left and right, a seedling vertical feed mechanism that feeds down a mat seedling placed on the seedling platform, and scrapes the seedling from the seedling platform. A planting device for taking and planting the planted plant, a planting clutch for transmitting and receiving a driving force to the reciprocating mechanism of the planting device and the seedling table, and a planting clutch operating means for operating the planting clutch. The transplanting machine includes a seedling platform movement detection means for detecting a left and right position of the seedling platform, and based on the detection of the seedling platform movement detection means, the reciprocating movement of the seedling platform is stopped at the end of movement. The first feature is that an informing means for informing the operation timing of disengaging the planting clutch is provided.
And a seedling shortage sensor for detecting the remaining amount of the mat seedling placed on the seedling placing stand is provided, and the notification means is configured to operate on the condition that the seedling shortage sensor detects the mat seedling shortage. This is the second feature.

According to the first aspect of the present invention, the apparatus includes a seedling stage movement detection unit that detects a left and right position of a seedling stage that reciprocates left and right, and based on detection of the seedling stage movement detection unit, Even if an operator who is unfamiliar with the driving operation of the riding rice transplanter is provided by notifying the disengagement timing of the planting clutch so as to stop the reciprocating movement at the end of the movement, the notification means will notify the timing. When the planting clutch is disengaged through the planting clutch operating means while adjusting the above, the seedling platform can be accurately stopped at the end of its movement without complicated operations.
And a seedling shortage sensor for detecting the remaining amount of the mat seedling placed on the seedling placing stand is provided, and the notification means is configured to operate on the condition that the seedling shortage sensor detects the mat seedling shortage. Thus, it is possible to prevent notification by the notification means when unnecessary. That is, since the notification by the notification means is made only at the timing when the mat seedling needs to be actually replenished, the operator does not erroneously operate the planting clutch operation means.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are a side view and a plan view of a riding type rice transplanter 1 which is an example of a transplanting machine, and a hydraulic cylinder 3 as an actuator is provided at the rear part of the body frame 2 of the riding type rice transplanting machine 1. A lifting link mechanism 4 is provided, and a planting work machine 5 as a work machine is connected to the lifting frame mechanism 4 through the lifting link mechanism 4 so as to be movable up and down. A ring 7 is provided.

  A bonnet 8 that covers an engine or the like (not shown) is provided at the front of the body frame 2, and the power output from the engine is transmitted into the transmission case 11 via the hydraulic continuously variable transmission 9 shown in FIG. In the transmission case 11, the power is split into the traveling transmission system and the planting transmission system, and the power is transmitted to the pair of left and right front wheels 6, the rear wheel 7, and the planting work machine 5. It is configured to be able to. A hydraulic pump (not shown) is provided on the left and right sides of the transmission case 11, and the hydraulic cylinder 3 is expanded and contracted by a hydraulic oil supplied from the hydraulic pump via a hydraulic control valve 71 (see FIG. 8) described later. The operation is controlled.

  In addition, a seat 12 on which an operator is seated is provided above the rear part of the body frame 2, and an operation panel 13 for displaying various monitors is disposed in front of the seat 12, and a steering handle is disposed above the operation panel 13. 14. Below the steering handle 14, a step 16 for forming the floor surface of the control unit 15 is provided.

  As shown in FIG. 4, on the left and right sides of the steering column 17 formed integrally with the operation panel 13, the lifting operation of the planting work machine 5 and the on / off operation of the planting clutch 52 (see FIG. 3) to be described later are performed. And a quick-up lever 19 capable of swinging up and down and swinging back and forth, which can select the swing start order of the pair of left and right line drawing markers 18L and 18R that form an indicator of the next planting process in the field scene. Yes. That is, the vertical operation of the quick-up lever 19 moves the planting machine 5 up and down and the planting clutch 52 is turned on and off, while the front-rear operation controls the start-up sequence of the left and right drawing markers 18L and 18R. Can be selected

  The operation panel 13 includes a work machine preparation switch 21 that allows the planting work machine 5 to be moved up and down and a planting clutch 52 that transmits power to the planting work machine 5 to be turned on and off. Marker 18L, 18R is also a lighting type marker automatic monitor, marker automatic switch 22 that enables automatic drawing of both line drawing markers 18L, 18R, alarm stop switch 23 that stops various notifications by an alarm buzzer (not shown), etc. Is provided.

  Further, as shown in FIG. 5, a link holder 24 is attached to the rear end of the lifting link mechanism 4 described above, and the planting work machine 5 can be freely rolled through a rolling shaft (not shown) provided in the link holder 24. A square pipe-shaped planting frame 25 to be supported is provided horizontally. Then, a pair of left and right seedling stage support frames 26L and 26R erected on the planting frame 25 reciprocates the seedling stage 27 on which a mat seedling for planting is placed to the left and right in a front and rear low-tilt posture. Supports freely.

  A plurality of planting transmission cases 28 are attached to the rear lower portion of the planting frame 25 at a predetermined interval as shown in FIG. A pair of transplanting rods 31 provided in a planting device (rotary case) 29 assembled on the left and right sides of the rear portion of the planting transmission case 28 are rotationally driven via a transmission mechanism and a planting drive shaft. . That is, each planting device 29 is equipped with a planetary gear mechanism (not shown) that can rotate the transplantation basket 31 along a predetermined locus along with its own rotation. One seedling is scraped from the mat seedling placed on (collocated) to be continuously transplanted to the field.

  Further, below the planting transmission case 28, a center float (not shown) serving as a hydraulic pressure sensing float for controlling the planting work machine 5 to a desired height and serving as a leveling float for leveling the farm scene, Supports a side float 32, which is a leveling float that clears the wheel marks of the front wheels 6 and the rear wheels 7, and grounds the ground scene until the bottom surface of the center float and the side float 32 touches the field scene and slides. After the planting work machine 5 is lowered, the transplanting (planting) work can be performed while the machine is running.

  Further, an input case 36 for inputting the power output from the planting PTO shaft 33 protruding from the transmission case 11 through the connecting shaft 34 and the universal joint 35 is attached to the center of the planting transmission case 28 in the width direction. The input case 36 branches the power to the left and right output shafts 37L and 37R via bevel gears B1 and B2 constituting the branch transmission unit. Then, a driving force is input to the planting transmission cases 28 from the left and right output shafts 37L and 37R, and the planting device 29 rotates through the chain transmission mechanism and the planting drive shaft, etc., which are built in the planting transmission cases 28. It is designed to be driven.

  In FIG. 6, a lateral feed transmission case 38 having a transmission mechanism 38 a constituting a reciprocating mechanism (transverse feed device) 37 of the seedling stand 27 is disposed outside the planting transmission case 28 located on the right side. ing. Power can be transmitted to the lateral feed transmission case 38 from the right output shaft 37R branched from the input case 36, and driving force can be transmitted to the lateral feed shaft 39 via the speed change mechanism 38a in the lateral feed transmission case 38. It is configured as follows.

  More specifically, the lateral feed shaft 39 is formed with a spiral groove 39a in the left-right direction, and a guide block 41 guided in the spiral groove 39a is provided and a slide block 42 fitted on the lateral feed shaft 39 is fitted. By this action, the seedling stage 27 can be reciprocated left and right along the lateral feed shaft 39. Then, by switching the lateral feed shaft 39 to a desired rotational speed via the speed change mechanism 38a in the lateral feed speed change case 38 described above, the left and right reciprocating movement process of the seedling stage 27, that is, the horizontal feed of the seedling stage 27 is completed. It is possible to change the number of times the seedling is scraped off by the transplanted culvert 31 in the process.

  Further, a rotating cam 43 is attached to one end (on the input case 36 side) of the lateral feed shaft 39, and a swing (not shown) that swings up and down by contacting the rotating cam 43 in the vicinity of the rotating cam 43. A moving arm is provided, and a vertical feed lever (not shown) is intermittently lifted upward by the swinging arm to operate the one-way clutch, thereby rotating the seedling vertical feed belt 44 in one direction to thereby rotate the seedling platform. A seedling vertical feed mechanism 45 capable of feeding the mat seedling placed on the lower side 27 downward is also provided.

  Further, in the transmission case 11, as shown in FIG. 3, an auxiliary transmission mechanism 51 that shifts and transmits power to the traveling transmission system, and a planting PTO shaft 33 that outputs power to the planting work machine 5. A planting clutch 52 for turning on and off the power transmission is provided, and a shifter shaft 53 for turning on and off the planting clutch 52 via an auxiliary transmission lever (not shown) is provided in the vicinity of the planting clutch 52. That is, when the planting clutch 52 is engaged and actuated, a driving force is input to the input case 36 of the planting work machine 5 so that the planting device 29 is rotationally driven, and the seedling mounting table 27 is reciprocated left and right. On the other hand, when the planting clutch 52 is turned off, both the rotation of the planting device 29 and the left and right reciprocating movement of the seedling table 27 are stopped.

  With the configuration described above, first, the planting work machine 5 is lowered so that the center float and the side float 32 come into contact with the field scene by the downward operation of the quick up lever 19, and then the planting clutch 52 is engaged and planted. The device 29 is driven to rotate and the seedling platform 27 is reciprocated to the left and right, and the seedling platform 27 is reciprocated to the left and right while the riding type rice transplanter 1 is traveling in the field. An appropriate amount of the mat seedling is scraped off by the transplanting rod 31 of the planting device 29 and planted in the field.

  As shown in FIG. 5, a scraping adjustment lever 57 linked to an apron 56 that receives the lower part of the mat seedling placed on the seedling stage 27 is disposed below the seedling stage 27 that constitutes the planting work machine 5. Is provided. That is, when the scraping adjustment lever 57 is swung up and down, the apron 56 is also linked and moved up and down, so that the seedling stand 27 (apron 56) of the planting device 29 with respect to the planting locus of the transplanting rod 31 is moved. The relative positional relationship can be changed. Therefore, it is possible to adjust the amount of mat seedling scraped off by the transplanting rod 31, and the number of seedlings to be planted can be adjusted to a desired number.

  Further, as in the first embodiment of the present invention shown in FIG. 7, a support stay 61 having an L-shaped cross section is provided at the upper end of the pair of left and right seedling support frames 26L and 26R. On the other hand, a slide rail 62 is fixed to the seedling stage 27 in the vicinity of the support stay 61 in the left-right direction of the seedling stage 27. A pin 64 for rotatably supporting the roller-like slide piece 63 is erected on one surface of the support stay 61 on the back surface (seedling platform 27) side of the pair of left and right seedling platform support frames 26L and 26R. is doing. That is, by inserting the upper end portion of the slide piece 63 into the slide rail 62 that is recessed downward, the upper side of the seedling support 27 is supported so as to be slidable (reciprocating) to the left and right via the slide piece 63.

  Further, on both the left and right sides of the support stay 61 (the seedling support frame 26L, 26R side), it is detected that the seedling support 27 that reciprocates left and right is positioned (reached) at the left or right end of movement. A seedling stand moving end detection sensor 65 is screwed through a bracket 66. This seedling stage moving end detection sensor 65 is an electromagnetic sensor, and is substantially U-shaped in a side view and opened upward, and when the two facing pieces are blocked, the seedling stage moving end detection sensor 65 The detection sensor 65 is turned on.

  That is, on the slide rail 62 side, if the seedling stage 27 that reciprocates left and right moves in the direction of the arrow A as shown in FIG. A left end detection plate 67L having an L-shaped cross section that is inserted between two facing pieces of the end detection sensor 65 and enters the seedling stage moving end detection sensor 65 is screwed.

  Then, on the inner side of the left end detection plate 67L (on the center side of the machine body), the two left end portions having an L-shaped cross section with the seedling stage moving end detection sensor 65 placed in advance before the left end detection plate 67L. The immediately preceding detection plates 68L and 69L are screwed to the slide rail 62. The two immediately preceding left end detection plates 68L and 69L are used for disengaging the planting clutch 52 at the moving end of the seedling mount 27, which will be described in detail later. It is provided to activate an alarm buzzer 82 as a notification means for notifying operation timing. The bracket 66 is formed with a substantially U-shaped slit that matches the seedling stage moving end detection sensor 65 so that the left end detection plate 67L and the left end immediately preceding detection plates 68L and 69L can pass through. ing.

  That is, the left end detection plate 67L and the left end immediately preceding detection plates 68L and 69L have an inverted L shape in a side view, and the upper end of the left end detection plate 67L and the left end detection plate 68L, 69L is a substantially U-shaped seedling stand moving end detection sensor 65 opened upward. Allow insertion. Accordingly, the left / right reciprocating movement of the seedling stand 27 is possible without inconvenience such as the left end detection plate 67L and the left end immediately preceding detection plates 68L, 69L and the seedling stand movement end detection sensor 65 contacting each other.

  Further, when the seedling table 27 that reciprocates left and right is positioned at (or reached) the right moving terminal of the slide rail 62, the right terminal detection that sets the seedling table moving terminal detection sensor 65 in the on state is included. On the inside of the right end detection plate 67R (the center of the machine body), two detection plates 68R immediately before the right end that put the seedling stage moving end detection sensor 65 into the state prior to the right end detection plate 67R. 69R are screwed, but the configuration is the same as that of the left end detection plate 67L and the left end detection plate 68L, 69L described above, and a description thereof will be omitted.

  By the way, the planting work machine 5 can be moved up and down from the height position at which the center float and the side float 32 are brought into contact with the farm scene to the predetermined maximum height position by the quick up lever 19 described above. And the expansion / contraction operation | movement of the hydraulic cylinder 3 with which the raising / lowering link mechanism 4 which raises / lowers the planting work machine 5 is controlled by the hydraulic control valve 71 shown in FIG. 8 which controls the flow of the pressure oil from the hydraulic pump which is not shown in figure is controlled.

  A lifter cam motor 72 is disposed in the vicinity of the hydraulic control valve 71. A pinion gear 73a fixed to the output shaft of the lifter cam motor 72 and a sector gear 74a formed on one side of the lifter cam 74 are provided. The lifter cam 74 is provided with a first cam portion that engages with an engagement pin of a valve operation plate (not shown), and the lifter cam 74 is engaged with the engagement pin of the valve operation plate. By being configured to rotate about the sleeve shaft 75, the lifter cam 74 can be controlled to move to four positions of raising, fixing, automatic (lowering), and planting according to the rotational drive of the lifter cam motor 72. It is configured. The lifter cam 74 is turned to each position to control the hydraulic control valve 71 to the up / fixed / automatic position, and to enable the planting clutch 52 to be turned on / off at the lowered position of the hydraulic control valve 71. .

  Further, in the vicinity of the cam surface 74b of the lifter cam 74, an operation arm 77 having a roller 76 in contact with the cam surface 74b is rotatably attached to the body frame 2 side. The operating arm 77 is rotated through the lifter cam 74 and is connected via a rod 78 to the shifter shaft 53 side for turning on and off the planting clutch 52.

  That is, the hydraulic control valve 71 extends the hydraulic cylinder 3 to raise the planting work machine 5 at the rising position where pressure oil from a hydraulic pump (not shown) is sent to the hydraulic cylinder 3 side. Thus, the rotation angle range of the lifter cam 74 with the hydraulic control valve 71 as the raised position is the “lifted state” of the lifter cam 74.

  The hydraulic control valve 71 enables the hydraulic cylinder 3 to be contracted at a lowered position where the hydraulic oil from the hydraulic cylinder 3 is returned to an oil tank (not shown), and the planting work machine 5 is caused by its own weight. Is lowered. Thus, the rotation angle range of the lifter cam 74 with the hydraulic control valve 71 in the lowered position is the “lowered state” of the lifter cam 74.

  Then, when the planting work machine 5 is lowered while the hydraulic control valve 71 is in the lowered position and the center float and the side float 32 are brought into contact with the farm scene, the planting work machine 5 is moved up and down following the farm scene. The hydraulic cylinder 3 is automatically expanded and contracted. This automatic expansion / contraction state of the hydraulic cylinder 3 is also realized by the “lowering state” of the lifter cam 74.

  Further, the hydraulic control valve 71 fixes the expansion / contraction position of the piston rod of the hydraulic cylinder 3 at a fixed position that stops the flow of pressure oil to the hydraulic cylinder 3 and the flow of pressure oil from the hydraulic cylinder 3 to the oil tank. The height position of the planting machine 5 is fixed. Thus, when the hydraulic control valve 71 is set to the fixed position, the rotation angle range of the lifter cam 74 becomes the “fixed state” of the lifter cam 74.

  When the lifter cam 74 is further rotated from the above-described “lowered state”, the operation arm 77 is rotated to enter the “planting state” in which the planting clutch 52 is engaged and operated. In the “planting state” of the lifter cam 74, the hydraulic control valve 71 maintains the automatic expansion / contraction state of the hydraulic cylinder 3 so that the planting work machine 5 moves up and down following the field scene.

  The rotation of the lifter cam 74 described above is controlled by a lifter cam motor 72. The lifter cam motor 72 is controlled by a control unit of the riding rice transplanter 1 as shown in the block diagram of FIG. Are connected to the output side of a microcomputer unit 81 having a CPU, ROM, RAM and the like via a predetermined output interface circuit. Similarly, on the output side of the microcomputer unit 81, an alarm buzzer 82 is connected as a notification means for notifying the timing of disengagement of the planting clutch 52 at the left and right moving ends of the seedling platform 27 described later in detail.

  A lifter cam potentiometer 84 is attached to the outside of the lifter cam 74 as a detector for detecting the rotation angle of the lifter cam 74. The lifter cam potentiometer 84 is connected to the input side of the microcomputer unit 81 via a predetermined input interface circuit. Further, on the input side of the microcomputer unit 81, an elevating operation detection switch 85 that detects the raising or lowering operation of the planting work machine 5 by the quick up lever 19, and the planting clutch 52 at the left and right moving ends of the seedling mount 27. An alarm mode switch 86 that activates an alarm buzzer 82 that prompts a cutting operation, and that the mat seedling placed on the seedling stand 27 has been planted by the transplanting rod 31 of the planting device 29 and has reached a predetermined remaining amount. A seedling shortage sensor 87 (see FIG. 2) to be detected and a seedling stage moving end detection sensor 65 for detecting the left and right moving end points of the seedling stage 27 are connected.

  And the microcomputer unit 81 described above has a seedling stand moving end notification control program for notifying the operator of the riding type rice transplanter 1 of the moving end of the seedling stand that reciprocally moves left and right according to the state of each input device. I remember it.

  For example, in the first embodiment of the present invention shown in FIG. 7, just before the seedling stage 27 that reciprocates left and right moves in the direction of the arrow A and is positioned (reached) at the left end of movement, the seedling stage 27 Two left end detection plates 69L, 68L screwed to the slide rail 62 are sequentially detected by the seedling stage moving end detection sensor 65, and the seedling stage 27 further moves and is positioned at the left moving end (reached). ) And the left end detection plate 67L are detected by the seedling stage moving end detection sensor 65.

At this time, the relationship between the plate width W1 of the two left end detection plates 69L and 68L and the plate width W2 of the left end detection plate 67L is formed as W1 <W2, and the two left end detection plates 69L and 68L and the left By configuring the end detection plate 67L so that the alarm buzzer 82, which is a notification means, operates while being detected by the seedling stage moving end detection sensor 65, planting of the seedling stage 27 at the moving end is achieved. A notification including a notice signal and a main signal for prompting the clutch 52 to be disengaged can be performed.

  In other words, the alarm buzzer 82 prompts the operator to turn off the planting clutch 52 at the end of movement of the seedling stand 27 that reciprocates left and right by a notification such as a time signal based on a combination of two single sounds and one long sound. Therefore, even an operator who is unfamiliar with the operation of the riding rice transplanter 1 can adjust the timing of the warning signal from the warning buzzer 82 and the notification made up of this signal, and the quick up lever 19 which is a planting clutch operating means. By cutting and operating the planting clutch 52, the seedling mount 27 can be accurately stopped at the end of its movement.

  In the second embodiment shown in FIG. 10, the left or right moving end position of the seedling stand 27 that reciprocates left and right is detected by one detection plate 91 and one seedling stand moving end detection sensor 65. Compared to the first embodiment, only one seedling stand moving terminal detection sensor 65 is required and the cost can be reduced. The movement termination notification control of the seedling table 27 in the second embodiment will be described below based on the flowchart shown in FIG.

  First, in step S1, when the seedling stage 27 is positioned (or reached) at the left or right moving end, a notification mode switch 86 for turning on an alarm buzzer 82 that prompts the disengagement operation of the planting clutch 52 is turned on. It is determined whether it is in the cut state or the cut state. If it is in the cut state, the process returns to the original state.

  In step S <b> 2, it is determined whether or not the mat seedling placed on the seedling placing stand 27 has been planted by the transplanting rod 31 of the planting device 29 and has reached a predetermined remaining amount by the seedling out sensor 87. If no seedling is detected, the process returns to the original state. If there is a seedling detection, the process proceeds to step S3.

  In step S3, whether or not the seedling stage moving end detection sensor 65 has detected the detection plate 91 by the movement of the seedling stage 27 to the left or right, that is, the seedling stage moving end detection sensor 65 is in the on state. If it is not in the entering state, the process returns to the original state. If it is in the entering state, the process proceeds to step S4.

  In step S4, whether or not the seedling stage moving end detection sensor 65 is turned on in step S3 is whether the detection plate 91 is passing the seedling stage moving end detection sensor 65, that is, the notification mode switch 86 is turned on. It is determined whether or not the seedling stage movement end detection sensor 65 has entered the state after a predetermined time (the time required for the detection plate 91 to pass the seedling stage movement end detection sensor 65) has elapsed. If the seedling stage moving terminal detection sensor 65 is turned on after a predetermined time has elapsed since the notification mode switch 86 is turned on, the process proceeds to step S5, and otherwise returns to the original state.

  In step S5, the detection time α of the detection plate 91 is counted by the seedling stage moving terminal detection sensor 65, and the process proceeds to step S6.

  In step S6, it is determined whether or not the detection plate 91 has been detected by the seedling stage movement end detection sensor 65, that is, whether or not the seedling stage movement end detection sensor 65 has been switched from the on state to the cut state. If it is not switched to the cut state, the process returns to the original state. If the switch is switched to the cut state, the process proceeds to step S7.

  In step S7, the moving speed of the seedling stage 27 is calculated based on the value of the detection time α of the detection plate 91 by the seedling stage moving end detection sensor 65 started in step S5, and an alarm is given from the moving speed of the seedling stage 27. The notification timing consisting of the warning signal and the main signal by the buzzer 82 is determined, a notification timer corresponding to the moving speed of the seedling table 27 is set, and the process proceeds to step S8.

  In step S8, it is determined whether or not the notification timer has become “0”. If it is not “0”, the process returns to the original state. If it has become “0”, the process proceeds to step S9.

  In step S9, the alarm buzzer 82 starts notification that includes the warning signal and the main signal, and then proceeds to step S10. The notification by the alarm buzzer 82 is the same as in the first embodiment, by executing a notification such as a time signal by a combination of two single sounds and one long sound, thereby moving the end of the seedling stand 27 that reciprocates left and right. At this time, the operator of the riding type rice transplanter 1 moves the clutch operation means while keeping the timing of the warning signal from the warning buzzer 82 and the notification made up of this signal. By cutting and operating the planting clutch 52 via the quick-up lever 19, the seedling mount 27 can be accurately stopped at the left or right moving end.

  In step S10, it is detected whether the planting clutch 52 has been disengaged via the quick-up lever 19 as described above, and whether the planting work machine 5 is raised or lowered by the quick-up lever 19 is detected. It is determined whether the raising / lowering operation detection switch 85 is in the on state or in the off state. If it is in the off state, the operation returns to the original state, and if it is in the on state, the process proceeds to step S11 and the alarm buzzer 82 stops the notification. The control to return to the original state is executed.

  Similarly to the first embodiment, the second embodiment described above is also made up of a notification signal that prompts the user to perform the disengagement operation of the planting clutch 52 at the end of movement of the seedling mount 27 that reciprocates left and right, that is, a notification. Since the alarm buzzer 82, which is a means, can notify the timing of the disengagement operation of the planting clutch 52 at the end of the movement of the seedling stage 27 by a notification such as a time signal by a combination of two single sounds and one long sound. Even an operator who is unfamiliar with the operation of the riding rice transplanter 1 can adjust the timing of the warning signal from the warning buzzer 82 and the notification made up of this signal through the quick-up lever 19 which is a planting clutch operating means. By cutting the planting clutch 52, the seedling stage 27 can be accurately stopped at the end of movement without complicated operations. That.

  Then, a seedling shortage sensor 87 for detecting the remaining amount of mat seedlings placed on the seedling mount 27 is provided, and an alarm serving as a notification means on condition that the seedling shortage sensor 87 has detected a mat seedling shortage. By configuring the buzzer 82 to operate, it is possible to prevent the alarm buzzer 82 from giving notification when it is unnecessary. That is, since the alarm buzzer 82 notifies only when the mat seedling needs to be actually replenished, the operator does not erroneously operate the quick up lever 19. Note that the notification made by the warning buzzer 82 and the warning signal may be performed by blinking or lighting the display lamp with good visibility, or by combining the alarm buzzer 82 and the display lamp. Also good.

The side view of a riding type rice transplanter. The top view of a riding type rice transplanter. FIG. The top view of an operation panel. The side view of a planting work machine. The principal part plane expanded view which shows the drive mechanism of a planting work machine. The front perspective view which shows the structure of the movement termination | terminus detection part of a seedling stand (1st Example). The side view which shows the structure of a hydraulic-sensing control valve periphery. The block diagram of a control part. The front perspective view which shows the structure of the movement termination | terminus detection part of a seedling stand (2nd Example). The flowchart which shows the movement termination | terminus notification control of a seedling stand.

Explanation of symbols

DESCRIPTION OF SYMBOLS 19 Planting clutch operation means 27 Seedling stand 29 Planting device 37 Reciprocating movement mechanism 45 Seedling vertical feed mechanism 52 Seeding clutch 65 Seedling stand movement end detection means 82 Notification means 87 Seed cutting sensor

Claims (2)

  The seedling placing table (27) reciprocating left and right, the seedling vertical feed mechanism (45) for feeding the mat seedling placed on the seedling placing table (27) downward, and the seedling from the seedling placing table (27) A planting device (29) for planting in a field, a planting clutch (52) for transmitting a driving force to a reciprocating movement mechanism (37) of the planting device (29) and the seedling mount (27), and the planting A transplanting machine comprising a planting clutch operating means (19) for turning on and off the attached clutch (52), comprising a seedling platform movement detecting means (65) for detecting the left and right positions of the seedling platform (27), Based on the detection of the seedling platform movement detection means (65), a notification means (82) for informing the timing of cutting operation of the planting clutch (52) to stop the reciprocating movement of the seedling platform (27) at the end of movement. )   A seedling out sensor (87) for detecting the remaining amount of mat seedling placed on the seedling placing stand (27) is provided, and the notification means is provided on the condition that the seedling out sensor (87) has detected the mat seedling out of seedling. The transplanter according to claim 1, wherein the transplanter is configured to operate.

Images