JP4811005B2 - Seedling transplanter - Google Patents

Description

  The present invention relates to a seedling transplanter configured to include left and right traveling support units and a seedling planting unit, and to plant seedlings while traveling in an agricultural field.

As shown in Patent Document 1, a left and right traveling support unit straddling a field ridge, a seedling transfer device that sequentially transfers the seedlings that have been input, and a seedling planting device that plants individual seedlings in the field 2. Description of the Related Art A walking-feeding type seedling transplanting machine for planting seedlings while traveling in a field is known.
In the seedling transplanter, the seedling transfer device including a transfer cup that circulates along an oval transfer path extending in the vehicle width direction supplies seedlings from an operator who walks between the ribs behind the left and right traveling support portions. By receiving and transferring it to a predetermined position and sequentially transferring it to the seedling planting device, it is possible to plant the seedling while traveling in the field.
JP 2005-21060 A

  However, the seedling transplanter needs to follow and walk within a limited range of the size in the vehicle width direction of the seedling transfer device so that the operator can accurately feed and supply the seedling to the seedling transfer device. There is a problem that workability is lowered because the input range for the apparatus is limited.

  An object of the present invention is to provide a seedling transplanter capable of improving workability by ensuring a sufficient working range for charging and supplying seedlings. Also, a seedling transfer device including a large number of seedling transfer cups that sequentially move the seedlings that are circulated along an elliptical circular transfer path extending in the vehicle width direction to a predetermined position, and a seedling planting body that is moved up and down by a link mechanism It is providing the seedling transplanting machine which can plant a staggered between predetermined planting strips by the right and left seedling planting apparatus provided with each.

The invention of claim 1 includes left and right traveling support portions (6, 6) that support the aircraft so that it can travel, a seedling transfer device (3) that sequentially transfers the supplied seedlings to a predetermined position, and this seedling transfer device ( 3) In a seedling transplanting machine provided with left and right seedling planting devices (4 , 4 ) for planting the seedlings transferred by 3) at left and right seedling planting positions (P, P) having a predetermined inter-strip distance (L) The seedling planting device (4 , 4 ) includes a seedling planting body (4b , 4b ) that is moved up and down by a link mechanism (4a , 4a ), respectively, and a predetermined planting line between left and right seedling planting bodies (4b , 4b ). (L) is configured to be planted zigzag, the seedling transfer device (3) comprises a plurality of sequentially transferring the seedling supplied orbiting along the oval orbit transfer path extending in the vehicle width direction (T) to a predetermined position The seedling transfer cup (3c) is provided and the orbital transfer path (T) is at least one of the left and right running It protrudes to the outside of the row support part (6, 6), and the projecting dimension of the protrusion side in the vehicle width direction from the traveling support part (6) to the seedling planting position (P) of the seedling planting device (4) Further, the length (M) from the seedling planting position (P) to the outer end of the seedling transfer device (3) is approximately doubled with respect to the inter-strip distance (L). The interval between the streaks (L) is approximately 3.5 times the arrangement pitch (p) of the seedling transfer cup (3c), and the seedlings are alternately transferred from the seedling transfer cup (3c) to the left and right seedling planting bodies (4b , 4b ). The seedling transplanting machine is characterized in that it is configured to supply.
The walking feeding type seedling transplanter having the above-described configuration is such that the left and right traveling support portions (6, 6) travel across the ridges of the field, and the seedling transfer device (3) that protrudes largely to the side of the machine body has the traveling support portion ( 6 and 6), the seedling planting device (4) receiving the seedlings from the rear side and receiving the seedlings sequentially transferred along the transporting path (T) to a predetermined position and planting the seedlings in the field.

According to a second aspect of the present invention, the seedling planting device (4, 4) includes a stay (3s) provided on a handle frame (2b) extending rearward from a transmission case (8) integrated with the engine 5 at a vehicle width center position. The left and right link mechanisms (4a, 4a), which are supported by transmission on both sides by the mission case (3m), and the left and right link mechanisms (4a, 4a) ) And the left and right beak-shaped left and right seedling planting bodies (4b, 4b) that move up and down at the inner position of both, and these left and right seedling planting devices (4, 4) The seedling transplanter according to claim 1, wherein the seedling transplanter is disposed within a range where the left and right traveling support portions (6, 6) straddle .

Since the seedling transplanter according to claim 1 shifts the arrangement pitch (p) of the seedling transfer cup (3c) with respect to the planting strip (L), the seedling transfer to the right and left seedling planting bodies (4b) The seedlings can be alternately supplied from the cup (3c) and can be smoothly delivered, and can be planted in a staggered manner (L). Since the seedling transfer device (3) largely protrudes outward of the travel support portion (6, 6), it is possible to supply and supply seedlings including the protruding outer range. Therefore, a work position for feeding and supplying seedlings and a seedling charging range with respect to the seedling transfer device (3) are secured widely, and workability can be improved. Further, when the seedlings are alternately discharged from the seedling transfer cup 3c to the right and left seedling planting bodies (4b, 4b), the position of seedling discharge is matched by a half-frame shift, so that the seedlings can be smoothly transferred when staggered. .
Furthermore, by making the length (M) from the planting position to the outer edge of the seedling transfer device (3) approximately twice as long as the inter-strip distance (L), even if there is a planting position at the rear of the aircraft, Since the transfer distance of the seedling transfer cup (3c) from the charging position to the planting position can be long, it is possible to secure a margin for the seedling charging operation. Since the seedling transfer device (3) is configured similarly on both outer sides of the travel support portions (6, 6), the right and left balance of the aircraft is secured, so that the planting posture is stabilized and the planting posture is Safety can be improved.
In addition to the effect of the seedling transplanter according to claim 1, the seedling transplanter according to claim 2 can set the spacing between the planting strips narrowly while adopting a configuration in which the frame (2b) is disposed between the planting strips.

A seedling transplanter as an embodiment of the present invention will be described below. In the following description of the illustrated example, when referring to the front or the rear, the side on which the engine 5 is disposed is referred to as the front, and the opposite side, that is, the side on which the steering handle 2 is disposed is referred to as the rear. When the term “right” or “left” is used, the right hand side is defined as the right and the left hand side is defined as the left when viewed from the operator standing at the front of the aircraft in the rear of the aircraft.

1 to 3 are a side view, a plan view, and a rear view of a seedling transplanter, respectively.
The seedling planting machine of the present example is a machine body 1 that enables forward traveling, a steering handle 2 for walking control provided at a rear portion of a handle frame 2b extending from the machine body 1, and a seedling planting planting seedlings in a field. It is set as the structure provided with the apparatus 4 and the seedling transfer apparatus 3 which supplies and transfers a seedling to this seedling planting apparatus 4. FIG.

  In the illustrated example, the airframe 1 is rollable forward of the engine 5, rear wheels 6 and 6, which are a pair of left and right drive wheels that are driven and rotated by transmission of the power of the engine 5, and the rear wheels 6 and 6. And a pair of left and right front wheels 7 and 7 supported by the vehicle. A mission case 8 is disposed at the rear portion of the engine 5, and the mission case 8 has a case portion extending from one side portion thereof to the same side of the engine 5, which is connected to one side portion of the engine 5. The output shaft of the engine 5 enters the case portion and transmits power to the transmission mechanism in the transmission case 8.

  On both sides of the transmission case 8, left and right rear wheel transmission cases 9, 9 are pivotably attached, and the rear wheels 6, 6 are supported at the rear end thereof so that the height position can be adjusted. Constitute. Specifically, the axle cases 9a and 9a are extended from the front end portions of the rear wheel transmission cases 9 and 9 toward the center of the fuselage, and the axle cases 9a and 9a are rotatably attached to the left and right side portions of the transmission case 8. . The rear wheels 6 and 6 are attached to the axles 10 and 10 that protrude rearward from the rear wheel transmission cases 9 and 9. A wheel drive shaft extending from the transmission case 8 to the left and right outwards enters the rotational axis X position of the front end portion of the rear wheel transmission cases 9, 9. The traveling power passing through the section is transmitted to the transmission mechanisms in the left and right rear wheel transmission cases 9, 9. The driving power is transmitted to the axles 10 and 10 on the rear end side of the rear wheel transmission cases 9 and 9 via the transmission mechanism in the rear wheel transmission cases 9 and 9, and the rear wheels 6 and 6 are driven to rotate. It is supposed to be.

  Axle cases 9a and 9a are provided so that they can be expanded and contracted to the left and right according to the width of the collar. Further, in order to support the axle cases 9a and 9a, the support frames 9b and 9b are fixed to the transmission case 8 in a state of being substantially parallel to the axle cases 9a and 9a, and are attached to the outer ends of the support frames 9b and 9b. The outer portions of the axle cases 9a, 9a are rotatably supported by the fixed support plates 9c, 9c.

  The left and right axle cases 9a, 9a are connected to driving means for rotating up and down so that the rear wheels 6, 6 can be moved up and down using the front side of the rear wheel transmission cases 9, 9 as a rotation fulcrum. Specifically, the left and right axle cases 9a and 9a are integrally attached with arms 11 and 11 extending upward, and this is attached to the tip of the piston rod of the lifting hydraulic cylinder 12 fixed to the transmission case 8. 13 are connected to both left and right side portions. One of the left and right sides (right side in the figure) is connected by a rod 14, and the other side (left side) is connected by a left / right horizontal control hydraulic cylinder 15 that can be expanded and contracted according to the inclination of the airframe.

When the lifting / lowering hydraulic cylinder 12 is actuated and its piston rod protrudes rearward, the left and right arms 11 and 11 rotate rearward, and the rear wheel transmission cases 9 and 9 rotate downward accordingly. The aircraft rises. On the contrary, when the piston rod of the lifting hydraulic cylinder 12 moves forward and retracts into the cylinder 12, the left and right arms 11, 11 rotate forward, and the rear wheel transmission cases 9, 9 move accordingly. Rotate upward to lower the aircraft. The lifting hydraulic cylinder 12 is actuated by sensor S which is grounded to the ridge surface operates with the fluctuation of the upper and lower Toi隔the fuselage and cement.

Operation of the sensor S becomes the operation of detecting the ridge top surface height to the machine body 1, a hydraulic cylinder 12 for lifting so as to be set height fuselage 1 based on the detection operation of the sensor S relative to the ridge upper surface height Is configured to operate. Further, the lifting hydraulic cylinder 12 is operated so as to raise or lower the airframe by manual operation of an operating tool disposed in the vicinity of the steering handle 2.

  Further, when the left / right horizontal control hydraulic cylinder 15 is extended and contracted, the left arm 11 connected to the left / right horizontal control hydraulic cylinder 15 is rotated, so that the left and right rear wheels 6 and 6 have different heights. Tilt the aircraft left and right. The left / right horizontal control hydraulic cylinder 15 is configured to operate so that the airframe is horizontally horizontal based on a detection result of a sensor that detects the right / left inclination of the airframe relative to the left / right horizontal.

  The left and right front wheels 7, 7 have vertical frames 16 a, 16 a attached to both left and right sides of a horizontal frame 16 that is rotatably attached around a vehicle width center axis below the engine 5, and an axle 17 that is fixed to the lower end side. , 17. Therefore, the left and right front wheels 7 and 7 can freely roll around the vehicle width center axis. The vertical frames 16a, 16a are provided so as to be adjustable up and down, and the height of the front wheels 7, 7 can be adjusted.

  Although the airframe 1 has a four-wheel configuration, it may be a two-wheel traveling support with only a pair of left and right drive wheels, or may be a pressure-reducing wheel that rolls on the upper surface instead of the front wheels. Moreover, it is good also as a crawler type traveling apparatus.

  The steering handle 2 is provided at the rear part of the fuselage and is located behind the axles 10 and 10 of the rear wheels 6 and 6. Specifically, it is attached to the rear end portion of the handle frame 2b whose front end portion is fixed to the mission case 8. The handle frame 2b is disposed at the center position of the vehicle width and extends at a low position to the position of the rear wheels 6 and 6, and gradually inclines and extends rearward while standing up.

  The steering handle 2 is divided into left and right sides from the rear end portion of the handle frame 2b and extends rearward, and the rear end portions thereof serve as grip portions 2a and 2a of the steering handle 2. The left and right grip portions 2a, 2a of the steering handle 2 are set to an appropriate height so that the operator can easily grasp them with his / her hands. In the example shown in the figure, the grip portions 2a, 2a are divided into left and right, but the left and right rear end portions of the steering handle 2 may be connected to each other left and right, and the connecting portion may be used as the grip portion.

  The seedling planting part is configured by attaching the seedling transfer device 3 and the left and right seedling planting devices 4 and 4 for two-row planting to the handle frame 2b. In the planting operation, the support height of the rear wheels 6 and 6 is changed in accordance with the heel height, and the height position of the handle frame 2b is adjusted up and down to maintain the seedling planting depth constant. Can do.

  Describing the seedling planting part in detail, the seedling transfer device 3 includes a number of seedling transfer cups 3c that are driven around along an elliptical transfer path T extending in the vehicle width direction. At least one of the left and right traveling support portions 6 and 6 protrudes outward, and the projecting dimension is greater than the distance in the vehicle width direction from the traveling support portions 6 and 6 to the seedling planting position. A number of seedling transfer cups 3c are configured so that the cup bottom can be opened and closed, and are connected and driven along the transfer path T to sequentially transfer the seedlings supplied by walking to a predetermined position. It is configured to drop and supply to the seedling planting device 4.

  Each seedling planting device 4, 4 has a beak-like shape that can be opened and closed by being connected to a link mechanism 4 a that is transmitted and supported by a mission case 3 m attached via a stay 3 s provided on the handle frame 2 b and driven to move up and down. It is constituted by the seedling planting body 4b, and by arranging this on the left and right within the range where the left and right traveling support parts 6 and 6 at the rear of the machine body straddle, the frame 2b is arranged between the planting stripes, Can be set narrowly, receiving seedlings from the seedling transfer device 3 and planting seedlings in the field. The seedling planting devices 4 and 4 are configured to perform two lettuce transplants on a persimmon by staggered planting. The link mechanisms 4a and 4a are arranged outside the mission case 3m, and the seedling planting bodies 4b and 4b are arranged inside the link mechanisms 4a and 4a. The seedling planting apparatuses 4 and 4 are provided with a cover 4c that covers the lower center portion so as not to disturb the operator.

  As a specific configuration example of the seedling transfer device 3, the length M from the planting position to the outer end of the seedling transfer device 3 is approximately doubled with respect to the inter-strip distance L, so that there is a planting position at the rear of the machine body. However, since the transfer distance of the seedling transfer cup 3c from the seedling input position to the planting position can be increased, a margin for the seedling input operation can be ensured. In addition, by setting the inter-strip distance L to be about 3.5 times the arrangement pitch p of the seedling transfer cup 3c, when the seedlings are alternately discharged from the seedling transfer cup 3c to the left and right seedling planting bodies 4b, 4b The position of seedling discharge is matched by the shift, and can be delivered smoothly when staggered.

  In the seedling transplanting machine having the above-described configuration, the seedling transfer device 3 protrudes greatly to the outside of the travel support portions 6 and 6, and the seedling can be supplied and supplied within the range of the dimension in the vehicle width direction. Accordingly, the work position and the input range for supplying and supplying seedlings are ensured and workability can be improved. Moreover, since the seedling transfer device 3 is similarly configured on both outer sides of the travel support portions 6 and 6, the right and left balance of the machine body is ensured, so that the planting posture is stabilized and the safety on the inclined land is ensured. Can be improved.

Next, another configuration example (second example) of the seedling transplanter will be described. In the following description, the same members as those described above are denoted by the same reference numerals, and description thereof is omitted.
4 to 6 show a side view, a plan view, and a main part rear view of the seedling transplanter, respectively.
The transmission system of the seedling planting part is powered by a planting transmission shaft 3t inclined from the bottom up to the transmission case 3m arranged at the center of the vehicle width, and this planting transmission shaft 3t brings the rear part to the center and from the outside. The planted transmission shaft 3t and the connecting body 13 are connected to the machine body so that the hydraulic cylinder 12 is inclined from the top to the bottom with the rear part positioned downward, and the hydraulic cylinder moves but escapes in the vertical direction. By adopting an intersecting (overlapping) arrangement in plan view, the airframe can be made compact while preventing the planting transmission shaft 3t and the coupling body 13 from interfering with each other.

  The seedling transfer device 3 drives the seedling transfer cups 3c around by a transmission shaft 3r extending in the vehicle width direction. Pipes are drawn out on both sides and connected to the rotating shaft portion to constitute the frame of the seedling transfer cup 3c. By configuring the rotation shafts on both sides of the circulation path of the seedling transfer cups 3c... To be driven by the transmission shaft 3r, a chain that connects the upper parts becomes unnecessary, and it can also serve as a frame.

  On the upper part of the machine body, a seedling base 41 for preliminarily placing seedlings is attached to the front side position of the seedling transfer device 3. The handle frame 2b, the mission 3m, and the seedling table 41 are connected to form the auxiliary seedling table stays 41a and 41b as strength members. Since this strength member has a frame shape in a side view, the strength can be secured.

Further, as shown in the side view of FIG. 7 and the rear view of the main part of FIG. 8, the mission 3m can be separated in the vertical direction, and the separation part can be attached and detached with one touch by adopting a gear transmission structure. It becomes.
As shown in the perspective view of the main part in FIG. 9 and the enlarged plan view in FIG. 10, the mission stay 3 s is configured simply and inexpensively by attaching the planting depth adjusting lever 2 d and the hydraulic cylinder stay 12 s together. be able to. By arranging the planting depth adjusting lever 2d through the lower part of the mission 3m, it is possible to avoid the interference with the planting link 4a and to form the rear in a simple form.

It is a side view of a seedling transplanter (1st example). It is a top view of the seedling transplanting machine of FIG. It is a principal part rear view of the seedling transplanting machine of FIG. It is a side view of a seedling transplanter (2nd example). It is a top view of the seedling transplanter of FIG. It is a principal part rear view of the seedling transplanter of FIG. It is a side view of a seedling transplanter (3rd example). It is a principal part rear view of the seedling transplanting machine of FIG. It is a principal part perspective view of a flame | frame. It is an enlarged plan view.

DESCRIPTION OF SYMBOLS 1 Airframe 2b Handle frame 2 Steering handle 3 Seedling transfer device 3m Mission case 3s Mission stay 3c Seedling transfer cup 4 Seedling planting device 4a Link mechanism 4b Planted body 6 Rear wheel (running support part)
7 Front wheel L Inter-strip distance M Length of planting position reference on outer edge

Claims (2)

Left and right traveling support portions (6, 6) that support the body so as to travel, a seedling transfer device (3) that sequentially transfers the supplied seedlings to a predetermined position, and a seedling transferred by the seedling transfer device (3) In a seedling transplanting machine provided with left and right seedling planting devices (4 , 4 ) for planting at left and right seedling planting positions (P, P) having a predetermined inter-strip distance (L) ,
The left and right seedling planting devices (4 , 4 ) are respectively provided with seedling planting bodies (4b , 4b ) that are moved up and down by link mechanisms (4a , 4a ) , and predetermined planting strips are provided by the left and right seedling planting bodies (4b , 4b ). It is configured to stagger in the space (L),
The seedling transfer device (3) includes a plurality of seedling transfer cups (3c) for sequentially transferring the seedlings that have been circulated along an elliptical circular transfer path (T) extending in the vehicle width direction to a predetermined position, The orbital transfer path (T) protrudes outward of at least one of the left and right traveling support portions (6, 6), and the projecting dimension of the protruding side is determined from the traveling support portion (6) of the seedling planting device (4). Set the distance in the vehicle width direction to the seedling planting position (P).
Furthermore, the length (M) from the seedling planting position (P) to the outer end of the seedling transfer device (3) is approximately doubled with respect to the inter-strip distance (L), and the inter-planting strip (L) Was set to be approximately 3.5 times the arrangement pitch (p) of the seedling transfer cup (3c), and the seedlings were alternately supplied from the seedling transfer cup (3c) to the left and right seedling planting bodies (4b , 4b ). A seedling transplanter characterized by. The seedling planting device (4, 4) is for planting via a stay (3s) provided on a handle frame (2b) extending rearward from a mission case (8) configured integrally with the engine 5 at a vehicle width center position. The left and right link mechanisms (4a, 4a), which support the transmission case (3m) and are supported by transmission on both sides of the transmission case (3m), are connected to the left and right link mechanisms (4a, 4a). The left and right seedling planting bodies (4b, 4b) that can be opened and closed that move up and down at the inner position, and these left and right seedling planting devices (4, 4) are connected to the left and right traveling support parts (6 6) The seedling transplanting machine according to claim 1, wherein the seedling transplanting machine is disposed within a range spanned by 6) .

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