JP2010110266A - Transplanting part of rice transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanting part of a rice transplanter, enabling the rotational directions and the rotational speeds of a horizontally sending shaft and a vertically sending shaft to be set freely and enabling a seedling mat carried by a seedling-carrying platform to be sent efficiently. <P>SOLUTION: The transplanting part 4 of the rice transplanter, carrying the seedling mat on the seedling-carrying platform 16, and transplanting the seedlings on a field by scraping out the seedlings by a prescribed amount from a seedling mat carried by a seedling-carrying platform 16 by a transplanting tine 17 while driving the seedling-carrying platform 16 in the right and left direction by an electrically driving means 60 so as to synchronize with the turning of the transplanting tine 17 arranged below the seedling-carrying platform 16, is regulated so that the electrically driving means 60 may be driven intermittently so as to stop when the transplanting tine 17 passes the seedling-scraping out part 28, and so as to be driven except that period. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique of a planting part of a rice transplanter, and more particularly to a technique of a planting part of a rice transplanter that performs a seedling planting operation continuously with a seedling stand, a seedling planting claw, and the like.

2. Description of the Related Art Conventionally, rice transplanters that perform seedling planting work continuously with a seedling stage and seedling planting claws have become known. The seedling stage is provided so as to be slidable back and forth. The seedling stage is capable of reciprocating left and right by mechanically transmitting the power from the engine to the lateral feed shaft through a power transmission mechanism.
A longitudinal feed belt for feeding the seedlings to the rear of the seedling stage is wound in the front-rear direction of the seedling stage. The longitudinal feed belt can be completely rotated backward by mechanically transmitting the power from the engine to the longitudinal feed shaft via a power transmission mechanism.
JP 2003-153620 A

  However, as in the past, the transmission mechanism for mechanically transmitting the power from the engine to the vertical feed shaft and the horizontal feed shaft to reciprocate the seedling platform left and right and rotate the vertical feed belt is the number of parts. There were many and gear cases etc. occupied space. In addition, when the seedling planting work is completed, the seedling mounting stage often stops in a state where it slides to the left or right, so that when planting the next seedling, it is efficiently planted from the end. Could not do the work. In addition, since the lateral feed shaft is mechanically driven, it is not suitable for continuously variable transmission, forward / reverse rotation, and the like. In addition, since the lateral feed shaft is mechanically driven, intermittent drive cannot be performed, and when scraping off the seedling from the seedling mat, the planting claw is pushed by the laterally fed seedling mat and planted in a stable posture. The amount of scraping from the seedling mat was not stable.

  Therefore, in view of such problems, the present invention can freely set the rotation direction and rotation speed of the horizontal feed shaft and the vertical feed shaft, and can efficiently feed the seedling mat placed on the seedling stand. Provide planting department.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  That is, in claim 1, the seedling mat is placed on the seedling stage, and the seedling stage is moved left and right by the electric drive means in synchronization with the rotation of the planting claws arranged below the seedling stage. In the planting part of the rice transplanter that reciprocates and scrapes the seedling mat placed on the seedling platform by a planting nail by a predetermined amount and plantes it in a farm field, the control device includes the planting nail Control is performed so as to stop when passing through the seedling scraping section and to drive intermittently otherwise.

  In claim 2, the seedling mat is placed on the seedling stage, and the seedling stage is driven to reciprocate left and right by the electric drive means in synchronization with the rotation of the planting claws disposed below the seedling stage. Then, in the planting part of the rice transplanter that scrapes the seedling mat placed on the seedling platform by a predetermined amount with the planting nail and plantes it in the farm field, the control device includes the electric drive means, It is controlled so that it is driven at a low speed when passing through the gripping portion, and is driven at a high speed otherwise.

  In claim 3, the seedling mat is placed on the seedling stage, and the seedling stage is driven to reciprocate left and right by the electric drive means in synchronization with the rotation of the planting claws arranged below the seedling stage. In the planting part of the rice transplanter that scrapes the seedling mat placed on the seedling platform by a predetermined amount with the planting nail and plantes the seedling mat on the field, the control device uses the electric drive means to perform the seedling mating initial setting. The stage is controlled to move to either the left or right end.

  According to a fourth aspect of the present invention, the control device controls the electric stand so as to move the seedling stage to the side closer to the left and right ends.

  In claim 5, the seedling mat is placed on the seedling stage, and the seedling stage is driven to reciprocate left and right by the electric drive means in synchronization with the rotation of the planting claws arranged below the seedling stage. In the planting part of the rice transplanter that scrapes the seedling mat placed on the seedling platform by the planting claws in a predetermined amount on the farm field, the control device uses the electric drive means at the end of the planting operation. The stage is controlled to move to the center of the left and right.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, when the seedling is scraped off from the seedling mat, the planting claws are not pushed by the seedling mat that is laterally fed, and can be planted in a stable posture, and the scraping amount from the seedling mat is also Stabilize.

  In claim 2, when the seedling is scraped off from the seedling mat, the force pushed by the seedling mat to which the planting claw is laterally fed is small, the amount of scraping off is reduced, and planting in a stable posture is possible. And the amount of scraping from the seedling mat is stable.

  According to the third aspect, when the planting operation is started, the seedling mat is not scraped from the right and left sides, and the amount of seedling scraping at the start of the operation is stabilized. Moreover, it can set to an initial position easily, without rotationally driving a planting nail.

  In Claim 4, at the time of planting work start, the movement time of a seedling stand can be shortened, and work can be started quickly.

  In Claim 5, when moving a rice transplanter, it can drive | work stably, without raising the raising seedling stand to either the right or left.

Next, embodiments of the invention will be described.
1 is a side view showing the overall structure of a rice transplanter according to an embodiment of the present invention, FIG. 2 is a plan view showing the rice transplanter, FIG. 3 is a perspective view showing a planting portion, and FIG. 4 is planting. FIG. 5 is a front view showing an electric drive means having a transverse feed motor and a screw shaft, FIG. 6 is a front view showing an electric drive means having a transverse feed motor and a rack, and FIG. 7 is a transverse feed. FIG. 8 is a front view showing an electric drive means having a cross feed motor and a chain, FIG. 9 is a front view showing an electric drive means having a cylinder, and FIG. Is a graph showing the drive control of the electric drive means, FIG. 11 is a perspective view showing the vertical feed belt electric drive means, FIG. 12 is a perspective view showing the vertical feed belt and the discharge guide, and FIG. 13 shows the control of the planting unit. It is a block diagram. In addition, let the arrow direction of the rice transplanter shown in FIG. 1 be the front, the front side of the drawing is the right side, and the back side of the drawing is the left side.

First, as an embodiment of the present invention, an overall configuration of an 8-row riding rice transplanter on which a planting unit 4 is mounted will be described.
As shown in FIGS. 1 to 3, in the rice transplanter, a planting part 4 is arranged at the rear part of the traveling part 1 via an elevating link mechanism 27, and the traveling part 1 mounts the engine 2 above the front part of the body frame 3. The front wheel 6 is supported on the front lower portion via a front axle case (not shown), and the rear wheel 8 is supported on the rear portion via a rear axle case 7.
The engine 2 is covered with a bonnet 9, steering handles 14 are arranged on the dashboard 5 at the rear of the bonnet 9, and both sides of the bonnet 9 and the rear body frame 3 are covered with a vehicle body cover 12. The seat 13 is disposed behind the handle 14, the both sides of the bonnet 9 are front steps, the front portion of the seat 13 is a middle step, and the left and right sides of the seat 13 are rear steps. Further, on both sides of the bonnet 9, spare seedling platforms 10 and 10 are arranged.
A lever such as a travel shift lever is disposed on the side of the dashboard 5, and a pedal such as a travel pedal is disposed on a step below the dashboard 5.

The planting part 4 in the present embodiment is composed of the seedling mount 16, planting claws 17, 17, center float 34, side float 35, seedling mat presser 46, vertical feed belt 51, seedling mat holding mechanism 50, etc. It is disposed behind the traveling unit 1.
As shown in FIG. 4, the seedling stage 16 is arranged at a front and a rear, and a seedling stage support frame comprising vertical frames 23a and 23a and horizontal frames 23b and 23b is provided at the front portion of the seedling stage 16, as shown in FIG. 23 is arranged in a frame shape, an upper rail 30a is fixed in the left-right direction at the upper part of the seedling support frame 23, and a lower rail 30b is fixed in the left-right direction at the lower part. A seedling table 16 is slidably mounted on the upper rail 30a and the lower rail 30b. A support frame 20 is provided at the lower center of the left and right of the seedling support frame 23, and a chain case 21 (see FIG. 1) protrudes rearward from the support frame 20 via a connecting pipe 63. A rotary case 22 that rotates in one direction is disposed, and a pair of planting claws 17 and 17 are disposed on both sides of the rotary case 22.

Further, a swing support portion 20a is formed on the front surface of the support frame 20, and a swing fulcrum shaft serving as a lateral swing center is projected rearward at the rear end of the elevating link mechanism 27. The lift link mechanism 27 is composed of a top link 25, a lower link 26, and the like, and is fitted with a lift cylinder (not shown) disposed below the seat 13 so that the planting part 4 is attached to the lift link mechanism 27. You can go up and down.
In description regarding the planting part 4 of this invention, let the front upper part of the seedling mounting stand 16 be an upstream, and let the rear lower part of the seedling mounting stand 16 be a downstream.

Next, the left-right reciprocating structure of the seedling mounting table 16 will be described.
The seedling table 16 is supported so as to be slidable in the left-right direction with respect to the upper rail 30a and the lower rail 30b, and is configured to reciprocate in the left-right lateral direction by an electric drive means 60 described later. Yes.
The electric driving means 60 is disposed on the opposite side of the seedling mounting surface of the seedling mounting table 16. The electric drive means 60 reciprocates the seedling stage 16 in the left-right direction in synchronization with the rotation of the planting claws 17. Further, the electric drive means 60 is disposed in the vicinity of the center of swinging of the planting part 4. By comprising in this way, it can arrange | position to the position as low as possible near a gravity center, without destroying a weight balance, and the stable planting is attained.

Next, the electric drive means 60 will be described with reference to FIG.
The electric driving means 60 includes a screw shaft 71 horizontally mounted on the seedling support frame 23, a transverse feed motor 72 that is a motor for rotating the screw shaft 71, and a screw shaft 71. It comprises a nut body 73 that is screwed and fixed to the seedling mount 16.
The screw shaft 71, the transverse feed motor 72, and the nut body 73 are disposed in the vicinity of the center of the left and right swing of the planting part 4. Both sides of the screw shaft 71 are rotatably supported by the seedling support frame 23 via bearings, and a male screw 71a is cut in the middle in the left-right direction. The male screw 71 a has a width that is substantially the same as the lateral movement width of the seedling table 16. The transverse feed motor 72 includes an output shaft 72a, and the output shaft 72a is linked to one end of the screw shaft 71 directly or via a power transmission means such as a chain or a gear. The transverse feed motor 72 and the screw shaft 71 are connected to each other via a power transmission means such as a chain or a gear, so that the transverse feed motor 72 is disposed in a vacant space on the front side of the seedling table 16. It is possible to use the space effectively. Further, the transverse feed motor 72 is connected to a control device 69 (see FIG. 13), and can control the rotation direction and the rotation speed thereof.

On the other hand, the nut body 73 includes a nut hole 73a having a circular hole in cross-section at the center and a female screw formed on the inner surface, and a connecting portion 73b protruding from the outer periphery, and the connecting portion 73b. Is fixedly connected to the back surface (front surface) of the seedling mounting table 16 with bolts or the like. The screw shaft 71 is screwed into the nut hole 73a.
As a result, the screw shaft 71 is rotated by the transverse feed motor 72 rotating in the forward or reverse direction via the output shaft 72a, and the nut body 73 into which the screw shaft 71 is screwed is turned to the left or Move to the right. And the said seedling mounting stand 16 which fixed the said nut body 73 can move laterally to the left or the right direction, and is reciprocated at the time of planting work.

Next, the electric drive means 60 according to another embodiment will be described with reference to FIG.
The electric drive means 60 includes a rack 81 fixed in the left-right direction on the side surface opposite to the seedling mounting surface of the seedling mounting table 16, a pinion 82 meshing with the rack 81, and an output shaft 72a for fixing the pinion 82. It is comprised from the transverse feed motor 72 which is a motor provided.
The rack 81, the pinion 82, and the lateral feed motor 72 are disposed in the vicinity of the center of the left and right swing of the planting unit 4. The rack 81 is fixed to the rear surface (front surface) of the seedling mounting table 16, and a rack groove 81a is provided on the side surface opposite to the seedling mounting surface of the rack 81. Further, the lateral feed motor 72 is fixed to the seedling support frame 23, an output shaft 72a projects from the lateral feed motor 72, and the pinion 82 is fixed to the output shaft 72a. The pinion 82 is configured to mesh with the rack groove 81a, and the rack 81 is moved in the left-right direction by rotating the pinion 82.
Thereby, by rotating the transverse feed motor 72 in the forward direction or the reverse direction, the pinion 82 fixed to the output shaft 72a rotates, and the rack 81 moves to the left or right. The seedling table 16 fixed to the rack 81 is configured to reciprocate in the left or right lateral direction.

  Further, the rack 81 can be formed integrally with a frame (not shown) that is fixed and supported integrally with the seedling mount 16. That is, the rack 81 is formed integrally with a frame extending in the left-right direction constituting the seedling mounting table 16, and a rack groove 81a is provided on the side surface opposite to the seedling mounting surface of the rack 81.

Next, the electric drive means 60 according to another embodiment will be described with reference to FIG.
The electric drive means 60 includes a wire (or belt) 91 which is an example of an endless body stretched in the left-right direction on the side surface opposite to the seedling mounting surface of the seedling mounting table 16, and a plurality of rotations for winding the wire 91 It comprises a driven pulley 92, 92 as a body, a tension pulley 93, and a driving pulley 94, and a transverse feed motor 72 that is a motor having an output shaft 72a for fixing the driving pulley 94.
The wire 91, the driven pulleys 92 and 92, the tension pulley 93, the drive pulley 94, and the lateral feed motor 72 are disposed in the vicinity of the center of the left and right swing of the planting unit 4.

  The wire 91 is stretched in the left-right direction on the side surface opposite to the seedling mounting surface. Both left and right ends of the wire 91 are hung on driven pulleys 92 and 92 that are rotating bodies, and a tension pulley 93 is provided in the middle of the wire 91. The driven pulleys 92 and 92 and the tension pulley 93 are rotatably supported by the seedling support frame 23. Further, a connecting member 96 is provided on a part of the wire 91, and the connecting member 96 is connected and fixed to the seedling mount 16. The transverse feed motor 72 is fixed to the seedling support frame 23 and includes an output shaft 72a. A drive pulley 94 is fixed to the output shaft 72a. The wire 91 is wound around the drive pulley 94. As a result, by rotating the transverse feed motor 72 in the forward direction or the reverse direction, the wire 91 is rotated and moved so that the seedling mounting table 16 reciprocates in the left or right lateral direction. .

Further, as shown in FIG. 8, the endless body may be a chain 101, and the rotating body may be constituted by driven sprockets 102 and 102 and a driving sprocket 103.
The chain 101 is stretched in the left-right direction on the side surface opposite to the seedling mounting surface. The left and right ends of the chain 101 are hung on driven sprockets 102 and 102 that are rotating bodies. Further, a connecting member 106 is provided in a part of the chain 101, and the connecting member 106 is connected and fixed to the seedling table 16. The transverse feed motor 72 is fixed to the seedling support frame 23 and has an output shaft 72a. A drive sprocket 103 is fixed to the output shaft 72a. The chain 101 is wound around the drive sprocket 103. As a result, the chain feed motor 72 is rotated in the forward direction or the reverse direction to rotate the chain 101 so that the seedling table 16 reciprocates in the left or right lateral direction.

Next, the electric drive means 60 concerning another Example is demonstrated using FIG.
The electric driving means 60 is composed of a cylinder 111 horizontally provided on the seedling support frame 23 and a fixed body 112 for fixing the tip of the piston rod 111b of the cylinder 111 to the seedling support 16.
The cylinder 111 and the fixed body 112 constituting the electric driving means 60 are disposed in the vicinity of the center of the left and right swing of the planting part.
The cylinder 111 includes a cylindrical cylinder body 111a and a piston rod 111b provided in a hollow portion of the cylinder body 111a so as to be slidable in the left-right direction. The cylinder body 111 a is fixed to the horizontal frame 23 b of the seedling support frame 23. A fixed body 112 is provided at the tip of the piston rod 111b constituting the cylinder 111. The fixed body 112 has a connection portion between the piston rod 111 b and a seeding stage 16. The seedling stage 16 is connected and fixed via the fixed body 112, and the hydraulic pressure or air pressure in the cylinder 111 is fixed. And the piston rod 111b is slid left and right. Or it comprises an electric cylinder. Accordingly, the seedling mounting table 16 is configured to reciprocate in the lateral direction of the left and right by moving the cylinder 111 in the lateral direction.

  Next, control of the electric drive means 60 and the longitudinal feed belt electric drive means 120 will be described.

First, control of the electric drive means 60 will be described.
As shown in FIG. 13, a control device 69 for controlling the lateral feed of the seedling table 16 is provided at an arbitrary position of the traveling unit 1. On the input side of the control device 69, a lateral position sensor 140, which is a lateral position detecting means for the seedling stage 16, and a lateral movement amount setting means for setting the lateral movement amount of the seedling stage 16 per unit time. 144 and a planting claw position sensor 146 that detects the rotational position of the planting claw 17 are connected, and the electric drive means 60 is connected to the output side.
The left-right position sensor 140 arranges a switch, a proximity sensor, an optical sensor, or the like on the seedling support frame 23 to detect whether the seedling support 16 is located at the left end, right end, or left / right center. In this case, the control configuration can be simple and inexpensive. Further, the left-right direction position sensor 140 is arranged on the output shaft 72a of the lateral feed motor 72 as a rotation speed sensor or an angle sensor, and can detect the position of the seedling stage 16 by the operation amount of the lateral feed motor 72. Alternatively, the position sensor 140 can be detected from the amount of expansion / contraction of the cylinder 111 by arranging the left / right direction position sensor 140 as a stroke sensor in the cylinder 111. In this case, the arbitrary position of the seedling stage 16 can be detected with high accuracy, and the moving speed can be easily calculated. In the present embodiment, a case will be described in which the operation amount of the lateral feed motor 72 is detected by a rotation speed sensor to detect the position and moving speed of the seedling table 16.
The planting claw position sensor 146 is configured to provide an angle sensor at the rotation position of the planting claw 17 or to detect rotation in the middle of the power transmission path from the traveling unit 1 to the PTO shaft and the planting claw 17. But not limited.

The operator can set the lateral movement amount of the seedling stage 16 synchronized with the rotation of the planting claw 17 during the planting operation by the lateral movement amount setting means 144. That is, the amount of horizontal scraping by the planting claws 17 can be set. The control device 69 calculates and determines the driving speed of the electric driving means 60 from the lateral movement amount set by the lateral movement amount setting means 144.
Further, at the time of planting, an actual measurement value of the left and right position of the seedling stage 16 is detected by the left and right direction position sensor 140, and the control device 69 feeds back from the actual measurement value to determine the correction driving speed of the electric driving means 60. is there.

Next, the vertical feed belt electric drive means 120 will be described.
As shown in FIG. 2 and FIG. 4, from the upstream portion to the downstream portion of the seedling mounting table 16, longitudinal feed belts 51, 51. The vertical feeding belt 51 is configured to convey the seedling mat placed on the seedling placing table 16 downstream by a predetermined amount at a predetermined timing. However, the drive timing of the vertical feed belt electric drive means 120 is when the seedling stage 16 is located at the left end or the right end and the planting claw 17 is not located at the seedling scraping portion 28.

Further, a longitudinal feed belt electric drive means 120 for driving the longitudinal feed belt 51 is provided. The longitudinal feed belt electric drive means 120 is composed of longitudinal feed motors 121, 121,... For driving the longitudinal feed belts 51, 51,. In this way, the vertical feed motors 121, 121... Can be driven and stopped independently, so that the strips can be easily stopped. Further, the vertical feed belt electric drive means 120 can be driven and stopped for each unit unit composed of two strips of planting claws 17 and 17 arranged on both sides of the rotary case 22. As a result, it is possible to easily stop each unit. In addition, when performing stapling, the vertical feed motor 121 is driven in reverse to raise the seedling mat to a position where the planting claws 17 do not act on the seedling mat. That is, it is raised by the amount of scraping once in the vertical direction. The vertical feed motor 121 is fixed to a horizontal frame 23b of the seedling support frame 23, and an output shaft of the vertical feed motor 121 is provided as a belt drive shaft 121a. However, the belt drive shaft 121a is connected to each strip or unit unit via eight strips via an electromagnetic clutch so that the belt drive shaft 121a can be driven by one longitudinal feed motor 121, and the stripping is performed by turning off the electromagnetic clutch. Thus, the number of motors can be reduced to reduce the cost.
A driving pulley 122 around which the upper end of the longitudinal feeding belt 51 is wound is fixed to the belt driving shaft 121a. As shown in FIG. 11, the longitudinal feed belt 51 is wound endlessly around the drive pulley 122 and a driven pulley 123 that is loosely fitted on a belt driven shaft (not shown) spaced apart from the drive pulley 122 in the downstream direction. It is rotated and is driven by the drive pulley 122. However, the drive pulley 122 and the longitudinal feed motor 121 may be arranged on the lower side.
Then, the amount of movement of the vertical feed belt 51 for each strip or each unit is detected by the vertical position sensor 141 which is the vertical position detection means of the seedling mat. In the present embodiment, the vertical position sensor 141 is configured to detect the amount of rotation of the belt drive shaft 121a with a rotation sensor, but is not limited thereto, and is configured to directly detect a seedling mat with a switch, an optical sensor, or the like. It can also be. In this case, the upper end position of the seedling mat placed on the seedling placing stand 16 is detected.

With this configuration, the vertical feed belt 51 can be moved in the vertical direction by driving the belt drive shaft 121a of the vertical feed motor 121 in the forward or reverse direction. Thus, during normal planting work, when the seedling stage 16 slides to the left end or right end, the vertical feed motor 121 is driven to rotate the vertical feed belt 51 downward by one strain. In addition, when the scraping amount by the planting claw 17 for each strip or each unit is different due to the mounting error or size error of the planting claw 17 and the remaining amount of the seedling mat on the seedling table 16 is different The vertical feed motor 121 is configured such that the remaining amount of the seed mats for each strip or each unit is detected by the vertical position detecting means so that the seed mats for each strip or each unit on the seedling mounting table 16 have the same amount. It can also be set as the structure which drives. In this way, it can be planted uniformly and the seedling mat is also uniformly reduced, so that the seedling joining operation can be performed at a time and the working efficiency can be improved.
Further, a switch to be the vertical feed operation means 147 is connected to the control device 69, and when the planting work is completed, the vertical feed operation means 147 is operated to drive the vertical feed motor 121 in the reverse direction so that the vertical feed belt 51 is raised. By moving in the direction, the seedling mat at the bottom of the seedling mount 16 can be moved upward by a predetermined amount. In this manner, the seedling mat remaining on the seedling stage 16 can be easily taken out by moving the seedling mat to the upper part of the seedling stage 16 without releasing the seedling mat presser 46 and removing it. . The vertical feed operation means 147 can perform the normal rotation drive operation or the reverse rotation drive operation of the vertical feed motor 121. However, the operation can be simplified by performing a predetermined amount of reverse rotation by operating it once. Can also be configured to move to the upper position of the seedling stage 16. Further, the longitudinal feed operation means 147 can be configured to be operable for each longitudinal or unit-wise longitudinal feed motor 121. In this case, even when the remaining amount of the seedling mat is different, it can be easily handled.

  Further, the seedling mat remaining at the end of the work can be configured to be taken out from below the seedling mounting table 16. That is, as shown in FIG. 12, the discharge guide 130 is switchably provided at the lower end of the seedling mount 16. The discharge guide 130 is formed in a plate shape, and a rotation shaft is provided in the left-right direction at a connection portion between the discharge guide 130 and the seedling mount 16. A switching operation means is provided at one end of the rotating shaft, and the switching operation means is operated and rotated to set the discharge guide 130 in a direction perpendicular to the seedling mounting surface of the seedling mounting table 16 as a working position. A state parallel to the seedling mounting surface (a state facing downward) is taken as the extraction position. Thus, at the end of the planting operation, the discharge guide 130 is rotated and switched to the take-out position, and the longitudinal feed operation means 147 is operated to drive the longitudinal feed motor 121 in the normal direction to move the longitudinal feed belt downward. By doing so, the seedling mat at the lower end of the vertical feed belt 51 can be discharged downward from the discharge guide 130.

Next, control of the vertical feed belt electric drive means will be described.
As shown in FIG. 13, a control device 69 for controlling the vertical feed of the seedling mounting table 16 is provided. Connected to the input side of the control device 69 are a vertical position sensor 141 which is a vertical position detection means for the seedling mat and a vertical movement amount setting means 145 for setting the vertical movement amount of the seedling mat. The longitudinal feed belt electric drive means 120 is connected to the output side.

The operator can set the vertical movement amount of the seedling mat when the seedling mounting table 16 reaches the left and right ends by the vertical movement amount setting means 145 in order to set the amount of one stock at the time of planting work. The control device 69 calculates and determines the drive time (rotation amount) of the vertical feed belt electric drive means 120 from the vertical movement amount set by the vertical movement amount setting means 145. The drive time (rotation amount) of the vertical feed belt electric drive means 120 can be set steplessly, and the amount of seedling scraping can be easily finely adjusted.
At the time of planting, the vertical position sensor 141 detects the actual value of the vertical position of the seedling mat, and the control device 69 determines the correction drive speed of the vertical feed belt electric drive means 120 from the actual value.

In addition, the electric drive until the first planting claw 17 passes through the seedling cleaning unit 28 and the next second planting claw 17 passes through the seedling cleaning unit 28 (one planting cycle). By setting the operation amount of the means 60 and the amount by which the vertical feed belt electric drive means 120 is operated when the seedling mounting stage 16 reaches the left and right ends, the amount of seedlings for one strain that the planting claws 17 scrape off is set. Can be set. In addition, since the area (size) of the seedling mat is constant, by inputting the area (size) of the field to be planted and setting the amount of seedling mat to be used for the field, automatically The scraping amount can be set so that the seedling mat can be planted without any excess.
It is also possible to set the amount of planted seedlings per unit area. In other words, the length of the streak is fixed, and the planting interval in the running direction is determined by the PTO transmission, so the amount of planted seedlings per unit area can be set by setting the amount of seedlings for one stock. Can be set.
That is, as shown in FIG. 13, a control device 69 for controlling the lateral feed and vertical feed of the seedling table 16 is provided, and the lateral position detecting means of the seedling table 16 is provided on the input side of the control device 69. A horizontal position sensor 140, a vertical position sensor 141 that is a vertical position detection means for a seedling mat placed on the seedling table 16, a seedling use amount setting means 142, a field area input means 143, And the electric drive means 60 and the longitudinal feed belt electric drive means 120 are connected to the output side.
The field area input means 143 is a means for inputting the area of the field to be worked from now. The seedling use amount setting means 142 is a means for setting the amount of a seedling mat used in the field where this area is input. When data is input by the field area input unit 143 and the seedling use amount setting unit 142, the control device 69 causes the operating amount of the electric driving unit 60 in one planting cycle and the seedling mounting table 16 to reach the left and right ends. The operation amount of the vertical feed belt electric drive means 120 at this time is calculated and determined. If no data is input by the field area input unit 143 and the seedling use amount setting unit 142, planting is performed with the scraping amount by the planting claws 17 set by the horizontal movement amount setting unit 144 and the vertical movement amount setting unit 145. Attached work is performed.

  During the planting operation, the left / right position of the seedling table 16 is detected by the left / right direction position sensor 140 and input to the control device 69, and the downward movement amount of the seedling mat is detected by the vertical position sensor 141. 69, the control device 69 calculates a deviation from the calculated operation amount of the electric drive means 60 and the longitudinal feed belt electric drive means 120, performs correction drive so that the deviation becomes 0, and performs feedback control. ing.

Next, operation control of the electric drive means 60 will be described.
The electric drive means 60 reciprocates the seedling table 16 in the lateral direction by driving the lateral feed motor 72 or the cylinder 111. Further, since the electric driving means 60 is not mechanically interlocked with the planting claws 17, 17, only the electric driving means 60 can be moved. Thereby, the position of the seedling stage 16 can be freely set by electrically controlling the transverse feed motor 72 or the cylinder 111.

Therefore, when the seedling mat is initially set, the planting claws 17 are configured to be stopped at a position that does not overlap with the seedling mount 16 in a side view, so that the driving of the planting claws 17 and 17 is stopped. The electric drive means 60 is operated to control the seedling stage 16 to move to either the left or right end.
For example, in the state where the previous planting operation has been completed and the seedling mat has been taken out, when performing the planting operation for the next field, if the seedling mount 16 does not stop at the left and right ends, the control device 69 By operating the connected work start switch 149, the electric drive means 60 is actuated to move the seedling stage 16 to the left end or the right end. With this configuration, when the seedling mat is newly placed on the seedling mounting table 16 and the planting operation is started, scraping by the planting claws 17 is performed from the lower end position of the left and right middle part of the seedling mat. When the seedling mat moves down to the left and right ends, the lower part of the seedling mat may be deformed. When the seedling mat is further reversed and moved laterally and returned to the scraping start position, approximately twice the amount of seedlings In some cases, scraping is performed. However, by constructing as in the present embodiment, scraping is sequentially performed from the lower left and right ends of the seedling mat, so that the amount of writing by the planting claws 17 can be kept constant.
When the operation start switch 149 is operated, the horizontal position of the seedling table 16 is detected by the horizontal position sensor 140, the distance to the left and right ends is calculated, and the electric drive means is in the direction close to the left and right ends. 60 can be controlled to operate. Thus, since the seedling stage 16 is moved to the side closer to the left and right ends by the electric drive means 60 at the start of the work, the start time can be shortened.

  The electric drive means 60 is configured to control the seedling stage 16 to move to the left and right center when the planting operation is completed. Conventionally, at the end of planting work, the seedling stage 16 is often stopped while moving to the left or right, and when the planting part 4 is raised, the center of gravity is biased to the left or right side, and the vehicle can be tilted. Sometimes it became unstable. Therefore, by moving the seedling placing table 16 to the left and right center at the end of the planting operation, the center of gravity of the planting unit 4 is located at the center of the left and right, so that it becomes stable. For example, the work end switch 148 is connected to the control device 69, and at the end of the work, the electric drive means 60 is operated by operating the work end switch 148 to move the seedling stage 16 to the left and right center. The work end switch 148 and the work start switch 149 are disposed in the vicinity of the steering handle 14.

  The electric driving means 60 may be configured to reciprocate the seedling mounting table 16 in the left-right direction at a constant speed, but the planting claw 17 is provided with the seedling scraping portion 28 (see FIG. 2). It is possible to use intermittent driving that stops when the vehicle passes through, and drives otherwise. That is, as shown in FIG. 10 (a), when the planting claw 17 passes through the seedling scraping portion 28 (T1, T2, T3,...), The control device 69 controls the transverse feed motor 72 or the cylinder 111. The control device 69 is stopped until the next planting claw 17 passes through the seedling cleaning unit 28 after the planting claw 17 has passed through the seedling cleaning unit 28. The drive signal of the transverse feed motor 72 or the cylinder 111 is turned on to drive it.

The electric driving means 60 may be driven at a low speed when the planting claw 17 passes through the seedling scraping portion 28 and driven at a high speed otherwise. That is, as shown in FIG. 10B, when the planting claw 17 passes through the seedling scraping section 28, the control device 69 uses the PWM control, the phase control or the like to control the width of the drive signal of the lateral feed motor 72 or the cylinder 111. Until the next planting claw 17 passes through the seedling cleaning unit 28 after the planting claw 17 has passed through the seedling cleaning unit 28. The control device 69 widens the drive signal of the lateral feed motor 72 or the cylinder 111 or increases the drive power to drive it at high speed.
In this way, the riding rice transplanter reciprocates the seedling stand 16 left and right as it travels forward, and the planting claws 17 and 17 are driven in synchronism with the reciprocating motion to cut out one seedling and continuously plant the seedlings. Perform additional work. When the planting claw 17 passes through the seedling scraping part 28, the moving speed in the left-right direction of the seedling mounting table 16 is low, so that the force that pushes the seedling mat laterally by the planting claw 17 Therefore, it is possible to plant with a stable scraping amount without scraping diagonally.

  As described above, the rice transplanter places the seedling mat on the seedling stage 16 and synchronizes with the rotation of the planting claws 17 arranged below the seedling stage 16. In the planting unit 4 of the rice transplanter, the controller 69 is configured to cause the seedling mat placed on the seedling table 16 to be scraped by a predetermined amount by the electric driving means 60 and planted on the farm field by a predetermined amount. The electric drive means 60 is controlled to stop when the planting claw 17 passes through the seedling scraping portion 28 and to drive intermittently otherwise. With this configuration, when the seedling is scraped off from the seedling mat, the planting claw 17 is not pushed by the laterally fed seedling mat, and can be planted in a stable posture. The amount taken is also stable.

  In addition, the seedling mat is placed on the seedling stage 16, and the seedling stage 16 is reciprocated left and right by the electric drive means 60 in synchronization with the rotation of the planting claws 17 disposed below the seedling stage 16. In the planting part 4 of the rice transplanter that drives and scrapes the seedling mat placed on the seedling mounting table 16 by the planting claws 17 by a predetermined amount and plantes it in the farm field, the control device 69 sets the electric drive means 60 to The planting claw 17 is controlled so as to be driven at a low speed when passing through the seedling scraping portion 28 and to be driven at a high speed otherwise. With this configuration, when the seedling is scraped off from the seedling mat, the force pushed by the seedling mat to which the planting claw 17 is laterally fed is small, and the amount scraped off obliquely is reduced, so that the stable posture is achieved. Can be planted and the amount of scraping from the seedling mat is stable.

  In addition, the seedling mat is placed on the seedling stage 16, and the seedling stage 16 is reciprocated left and right by the electric drive means 60 in synchronization with the rotation of the planting claws 17 disposed below the seedling stage 16. In the planting part 4 of the rice transplanter that drives and scrapes the seedling mat placed on the seedling mount 16 by the planting claw 17 in a predetermined amount and plantes it in the farm field, the control device 69 uses the electric drive means 60 to At the initial mat setting, the seedling mounting table 16 is controlled to move to either the left or right end. By comprising in this way, at the time of a planting operation start, it will not scrape off from the middle of the seedling mat, and the amount of seedling scraping at the start of the operation will be stabilized. Further, the planting claw 17 can be easily set at the initial position without being driven to rotate.

  The control device 69 controls the electric drive means 60 to move the seedling stage 16 to the side closer to the left and right ends. By comprising in this way, the movement time of the seedling mounting stand 16 can be shortened at the time of planting work start, and work can be started quickly.

  In addition, the seedling mat is placed on the seedling stage 16, and the seedling stage 16 is reciprocated left and right by the electric drive means 60 in synchronization with the rotation of the planting claws 17 disposed below the seedling stage 16. In the planting part 4 of the rice transplanter that drives and scrapes the seedling mat placed on the seedling mounting table 16 by a predetermined amount by the planting claws 17 in the field, the control device 69 uses the electric drive means 60 to plant the seedling mat. At the end of the attaching operation, the seedling mounting table 16 is controlled to move to the left and right center. With this configuration, when the rice transplanter is moved, the raised seedling table 16 does not tilt to the left or right, and can travel stably.

The side view which showed the whole structure of the rice transplanter which concerns on one Example of this invention. The top view which shows a rice transplanter. The perspective view which shows a planting part. The front view which shows a planting part. The front view which shows the electric drive means which comprises a transverse feed motor and a screw shaft. The front view which shows the electric drive means which comprises a transverse feed motor and a rack. The front view which shows the electric drive means which comprises a transverse feed motor and a wire. The front view which shows the electric drive means which comprises a transverse feed motor and a chain. The front view which shows the electric drive means which comprises a cylinder. The graph which shows the drive control of an electric drive means. The perspective view which shows a longitudinal feed belt electric drive means. The perspective view which shows a vertical feed belt and a discharge guide. The block diagram which shows control of a planting part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling part 2 Engine 3 Body frame 4 Planting part 16 Seeding stand 17 Planting claw 23 Seedling stand support frame 23a Vertical frame 23b Horizontal frame 51 Vertical feed belt 60 Electric drive means 69 Controller 71 Screw shaft 72 Horizontal feed motor 72a output shaft 73 nut body 81 rack 82 pinion 91 wire 92 driven pulley 93 tension pulley 94 drive pulley 101 chain 102 driven sprocket 103 drive sprocket 111 cylinder 111b piston rod 120 vertical feed belt electric drive means 121 vertical feed motor 130 discharge guide 140 left and right Direction position sensor 141 Vertical direction position sensor 142 Seedling use amount setting means 143 Field area input means 144 Horizontal movement amount setting means 145 Vertical movement amount setting means

Claims (5)

The seedling mat is placed on the seedling stage, and the seedling stage is driven to reciprocate left and right by the electric drive means in synchronization with the rotation of the planting claws arranged below the seedling stage. In the planting part of the rice transplanter that scrapes the seedling mat placed on the farming nail by a predetermined amount and plants it in the farm field,
The control device controls the electric drive means to stop when the planting claws pass through the seedling scraping unit and to drive intermittently to drive the rest otherwise. The seedling mat is placed on the seedling stage, and the seedling stage is driven to reciprocate left and right by the electric drive means in synchronization with the rotation of the planting claws arranged below the seedling stage. In the planting part of the rice transplanter that scrapes the seedling mat placed on the farming nail by a predetermined amount and plants it in the farm field,
The control device controls the electric drive means to drive the planting claw at a low speed when the planting claw passes through the seedling scraping unit and to drive at a high speed otherwise. The seedling mat is placed on the seedling stage, and the seedling stage is driven to reciprocate left and right by the electric drive means in synchronization with the rotation of the planting claws arranged below the seedling stage. In the planting part of the rice transplanter that scrapes the seedling mat placed on the farming nail by a predetermined amount and plants it in the farm field,
The planting part of the rice transplanter characterized in that the control device controls the electric drive means to move the seedling stage to either the left or right end at the initial setting of the seedling mat.   The said control apparatus controls so that a seedling mounting stage may be moved to the side near the right-and-left end by the said electric drive means, The planting of the rice transplanter as described in any one of Claims 1-3 characterized by the above-mentioned. Appendices. The seedling mat is placed on the seedling stage, and the seedling stage is driven to reciprocate left and right by the electric drive means in synchronization with the rotation of the planting claws arranged below the seedling stage. In the planting part of the rice transplanter that scrapes the seedling mat placed on the farming nail by a predetermined amount and plants it in the farm field,
The planting part of the rice transplanter, wherein the control device controls, by the electric drive means, that the seedling stage is moved to the center of the left and right at the end of the planting operation.

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