JP2008295366A - Seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem of a conventional seedling transplanter which is a complicated machine manufactured by connecting both transmission cases having pivotally connected right and left rear wheels to each other through a balance rod, and connecting a hydraulic cylinder for lifting or lowering and a hydraulic cylinder for right and left horizontal control to this, and having a highly functional mechanism enabling the upward or downward control and rolling control of the vehicle body, and thereby requires a high manufacture cost. <P>SOLUTION: This seedling transplanter is manufactured by extending an axle (3) from both the sides of a mission case (2) having an engine (1), using the axle (3) as a rotation support (P), disposing a first frame (4) and a second frame (5) in a crossed form, pivotally disposing a rear wheel (6) on the second frame (5), pivotally disposing a front wheel (7) on the first frame (4), and then disposing a seedling planter (9) in a vehicle body (8) disposed on the first frame (4) and the second frame (5). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  In the present invention, a first frame and a second frame with wheels mounted on the lower portion are mounted so as to intersect with an axle, and both the frames are rotated back and forth with the axle as a rotation fulcrum to raise and lower the vehicle body. It relates to a simple seedling transplanter.

For example, as disclosed in Japanese Patent No. 3815372 (see Patent Document 1), a conventional seedling transplanting machine is configured such that a seedling planting device is connected to a link mechanism that is driven to move up and down, and is moved up and down. Has a beak-like planting part that opens and closes, and a pair of left and right front wheels supported by a front wheel support frame is provided at the front of the vehicle body, and left and right at the tip of the left and right transmission case with the upper part attached to the transmission case A pair of rear wheels are mounted on a shaft. And the seedling transplanting machine described in this publication is provided with a seedling stand on which a seedling is temporarily placed so that an operator can directly put seedlings into the opening, and is linked to the seedling planting tool. It is the structure which provided the guard body which covers the side and back of the connection part of a mechanism. And this seedling transplanter is configured such that when an operator puts a seedling into the guiding body of the planting tool, a hand or the like is prevented from touching the operating part, and the worker can work safely.
Japanese Patent No. 3815372

  In the seedling transplanter disclosed in Patent Document 1 presented by the present applicant as a publicly known technology before filing, the front wheel is supported by the vehicle body by the front wheel support frame, and the rear wheel is supported by the transmission case so as to be vertically movable. It is configured to be pivoted on the left and right transmission cases. The rear wheel has a structure in which both the left and right transmission cases are connected by a balance rod, and an elevating hydraulic cylinder and a left / right horizontal control hydraulic cylinder are connected to the rear wheel so that the vehicle body can be vertically adjusted and rolled. The seedling transplanting machine is equipped with a mechanism equipped with advanced functions, resulting in a machine having a complicated configuration, and there is a problem that the manufacturing cost is increased.

  On the other hand, in the invention of the present application, the axles on both sides of the transmission case are rotatably mounted by intersecting the first frame supporting the front wheels and the second frame supporting the rear wheels, With a simple structure that can adjust the vehicle height and planting action around the center of rotation, a link frame is connected to the upper part of the pantograph. The seedling planting device on the vehicle body eliminates the lifting link mechanism that mechanically performs the planting action, and has a simple configuration for planting seedlings in relation to the vertical movement of the vehicle body using both frames. Yes. For this reason, the invention of this application has a simple configuration that enables planting in a stable state while maintaining a good planting posture of the seedling because the front and rear support of the vehicle body is stable.

  In order to solve the above-mentioned problem, the present invention is characterized in that the invention described in claim 1 is provided by extending the axle (3) laterally from the left and right sides of the mission case (2) and rotating the axle (3). As the fulcrum (P), the front lowering first frame (4) and the front rising second frame (5) are provided crossing each other, and a rear wheel (6) is pivotally mounted on the second frame (5). The first frame (4) is provided with a front wheel (7) pivotally mounted on the vehicle body (8) mounted on the upper part of the first frame (4) and the second frame (5). A seedling transplanter configured by providing a device (9), which includes a conventional balance rod, a lifting hydraulic cylinder connected to the lifting balance, and a left / right horizontal control in the support structure of the front and rear wheels (7) (6) The hydraulic cylinder etc. are abolished and the structure is simplified, and the seedling planting device (9) provided on the body frame (8) As a simple configuration in which waste complex planting operation mechanism such as a descending linkage is obtained by significantly reducing the manufacturing cost.

  According to a second aspect of the present invention, either the first frame (4) or the second frame (5) is constituted by a transmission case (10) also serving as a frame, and the transmission case (10 ) Is configured to transmit driving power from the transmission case (2) to the front wheel (7) or the rear wheel (6), and the vehicle body (8) is centered on the rotation fulcrum (P). A structure for transplanting a seedling by inserting the seedling planting device (9) into soil while moving up and down with the rotation of the intersecting first frame (4) and second frame (5); The seedling transplanting machine according to claim 1, wherein one of the first (4) and the second frame (5) serves as a transmission case (10) to simplify the device, The attachment device (9) is also simplified by eliminating the lifting link mechanism, and the body (8) is moved up and down to grow seedlings. It is obtained by significantly reducing the manufacturing cost by a simple construction that can be planted.

  First, the invention according to claim 1 is configured as described above, so that a conventional balance rod and a lifting hydraulic cylinder connected to this are included in the support structure of the front and rear wheels (7) and (6). The control hydraulic cylinder and the like have been abolished, and the configuration has been greatly simplified. Furthermore, the seedling planting device (9) provided on the vehicle body (8) has also eliminated the complicated planting operation mechanism such as the conventional lifting link mechanism. As a simple configuration, it has a feature that the manufacturing cost is greatly reduced. The invention of claim 1 is characterized in that the planting posture of the seedling becomes good and stable because the front and rear wheels can stably support the body of the seedling transplanter.

  Next, the invention according to claim 2 simplifies the apparatus by using one of the first frame (4) and the second frame (5) also as a transmission case (10), and planting seedlings. The device (9) also eliminates the lifting link mechanism and the like to greatly simplify the structure, and the seedling planting device (9) is configured to plant seedlings in the field in association with the vertical movement of the vehicle body (8). Although it has a compact configuration, it has the minimum necessary functions and has features that greatly reduce the manufacturing cost.

Embodiments of the present invention will be specifically described below with reference to the drawings.
First, as shown in FIGS. 1 to 3, the mission case 2 is configured such that the engine 1 is integrally connected to the front side and rotational power is input from the engine 1. The transmission case 2 is provided with a main clutch device and a transmission that are well known in the art and output to the axles 3 provided on both sides of the lower rear, although the detailed illustration of the internal mechanism is omitted. It is configured. In the case of the embodiment, the transmission case 2 is configured to be able to switch between starting and stopping of the vehicle body 8 by turning on and off the main clutch device by the main clutch lever 13 at the rear. The transmission is configured to be able to switch between two stages of high speed and low speed.

  The first frame 4 is composed of a pair of left and right, and is arranged in a front-lowering manner in both sides of the vehicle body 8 in a side view, and its middle part is pivotally supported by the axle 3 and supported. A front wheel 7 is pivotally mounted on the lower end portion located at the position. The second frame 5 is composed of a frame that also serves as the transmission case 10, and the upper part is fixed to the transmission case 2 and is tilted forward in a side view and disposed on both sides of the vehicle body 8. The upper part is pivotally mounted with the axle 3 as a rotation fulcrum P, and the rear wheel 6 is pivotally provided at the lower part. In the case of the embodiment, although the transmission case 10 is not shown, it is constituted by a chain case equipped with a transmission chain inside.

  Thus, the first frame 4 and the second frame 5 are mounted so as to intersect at the position of the axle 3, and the axle 3 is pivotally supported as a pivot fulcrum P and pivoted forward and backward. By doing so, the height of the vehicle body 8 can be adjusted. The second frame 5 is configured by the transmission case 10 as described above, and travel power transmitted from the axle 3 is transmitted to the left and right rear wheels 6 by chain transmission. And the structure of the upper frame which comprises the vehicle body 8 consists of the front link 16 pivotally attached to the upper part of the fixed link 15 which fixed the lower part to the mission case 2, and the rear link 17 pivotally attached to the upper part of the first frame 4. Are connected by a connecting support frame 18 in the upper part, and the entire link configuration is configured as a pantograph-type link frame.

  In the description of the present specification, as shown in FIG. 1, the vehicle body 8 includes a mission case 2 supported by a first frame 4 and a second frame 5, an engine 1, an upper fuel tank 20, The front link 16, the rear link 17, and the entire connection support frame 18 are collectively referred to.

  Next, the seedling planting device 9 is provided with a hopper 9a that feeds seedlings from the upper side and opens upward, and a beak-shaped planting portion 9b that opens to the left and right during planting is provided on the lower side. Is configured. Reference numeral 24 denotes a beak opening tool. In the case of the embodiment of FIG. 1, the seedling planting device 9 is attached to the vehicle body 8 with a parallel link 34, and is configured to plant seedlings as the vehicle body 8 moves up and down. That is, the vehicle body 8 is configured such that a hydraulic cylinder 22 is provided at the rear portion and the rear portion of the piston 23 is connected to the upper portion of the first frame 4. Accordingly, when hydraulic oil is supplied, the hydraulic cylinder 22 extends rearward and forcibly pushes the upper side of the first frame 4 backward to rotate about the rotation fulcrum P as a fulcrum. The inclination becomes loose and the front wheel 7 is moved forward.

  In this way, the vehicle body 8 has the axle 3 as the pivot point P, the first frame 4 and the second frame 5 rotate relative to each other, and the distance between the front wheel 7 and the rear wheel 6 increases. The height is lowered. And the said seedling planting apparatus 9 can plant a seedling by opening the planting part 9b when the planting part 9b enters the soil and the beak opening tool 24 at the back is actuated to reach the soil. .

  The hydraulic cylinder 22 is configured as a hydraulic valve that increases the raising speed (process speed after planting) compared to the lowering speed of the vehicle body 8 (speed of the process before planting). The planting trajectory can be bulged.

  And in the case of an Example, the seedling planting apparatus 9 is set as the structure attached to the attachment part with the vehicle body 8 with a backlash (margin part), and can be returned by the spring 25. Therefore, the planting part 9b is absorbed by backlash without being dragged as the vehicle body 8 moves forward when the planting part 9b is inserted into the soil in the planting process. And if the seedling planting apparatus 9 leaves | separates upwards from soil, it will be pulled back to the original position only by the backlash by the tension | tensile_strength of the said spring.

  In the configuration in which the main clutch is automatically disengaged and the traveling of the vehicle body 8 is interrupted while the planting portion 9b is in the soil as in the embodiment described later, the above-described backlash or the spring 25 No equipment is required.

  The planting depth of the seedling planting device 9 is determined by the amount of extension (length) of the piston 23 of the hydraulic cylinder 22 described above. Can be done. And adjustment between planting stocks is performed by adjusting the position of the stop collar 26 provided in the middle of the piston and adjusting the expansion / contraction stop position.

  Next, as shown in FIG. 2 to FIG. 4, the seedling transplanting machine connects the first frames 4 and 4 on both the left and right sides integrally with a horizontal connecting rod 30 at its upper end, and the horizontal connecting rod 30 is It is configured to be screwed to a spiral shaft 31 that is mounted in the front-rear direction. In this case, as shown in the drawing, the spiral shaft 31 is provided with a front end portion rotatably supported by a connecting portion (pivot mounting portion) between the fixed link 15 and the front link 16 and is provided by a handwheel provided at the rear portion. The elevating handle 33 is rotated to move the lateral coupling rod 30 back and forth in a spiral.

  When the first frame 4 is rotated by manually rotating the lifting handle 33 in the above-described configuration, the horizontal connecting rod 30 moves back and forth on the rotating spiral shaft 31 and the upper end portion thereof is moved and adjusted. The tilt angle is changed and adjusted with 3 as a pivot point P, and the vehicle body 8 can be adjusted up and down.

  In this way, the seedling transplanter rotates the intersecting first frame 4 and second frame 5 around the pivot fulcrum P by the rotation operation of the rear lifting handle 33, and the front wheel 7 and the rear The wheel 6 can be changed and adjusted as shown in FIG. 2 so that the vehicle body 8 can be moved up and down and the wheel base can be changed and adjusted. Then, as shown in FIG. 2, the seedling transplanter can adjust the front wheel 7 and the rear wheel 6 up and down to the position of the one-dot chain line or the position of the two-dot chain line with respect to the upper body 8. At the position of the dotted line, the vehicle height is the lowest and can be accommodated in the trunk of the vehicle. The fuel tank 20 already described is configured such that when the vehicle height is adjusted to the lowest position, the fuel cock is automatically tightened and the engine 1 cannot be started, so that safety during transportation mounted on a vehicle or the like is ensured. It is supposed to be possible.

  As shown in FIGS. 2 and 3, the seedling planting device 9 is supported by the parallel link 34 on the vehicle body 8, and has a configuration in which the planting handle 35 can be pushed down to lower the seedling planting position. When the attachment position is reached, the beak-like planting portion 9b in the soil is opened to the left and right by a gripping operation by the opening / closing lever 36 so that seedlings can be planted. In this way, the seedling planting device 9 performs the planting process by pushing down the planting handle 35 by manual operation as described above. However, the return action is performed by the tension pressure of the return spring 37. It is set as the structure which can be returned to. In this case, the return spring 37 has a configuration in which an upper end portion is attached to the lower side of the planting handle 35 and a lower end portion is attached to the rear link 17 at a fixed position and tensioned.

  And as already explained, the seedling transplanting machine is configured to switch between starting and stopping by turning on and off the main clutch lever 13, but the configuration of the embodiment is in addition to that, the seedling transplanting device While 9 is pushed down, the traveling is automatically stopped even during the seedling planting operation described above. In the case of the embodiment, the forward traveling is stopped while the planting handle 35 is pushed down, and there is an advantage that the planting posture of the seedling is kept good and the planting part 9b is not dragged in the soil.

  And the seedling planting apparatus 9 is set as the structure which the upper opening part of the hopper 9a exists in the position higher than the rear link 17 in the height position before planting waiting at the upper part, as shown in drawing. Therefore, the hopper 9a has an advantage that the seedling can be easily supplied without causing the rear link 17 to become an obstacle even from the side.

  As shown in FIGS. 1 to 3, the auxiliary seedling frame 39 is provided on the connection support frame 18 that connects the front link 16 and the rear link 17, and the link mechanism that is assembled in the pantograph type already described. It is set as the structure attached to a part of. Therefore, the auxiliary seedling frame 39 is at a high position during the transplanting operation, and it is easy to replenish seedlings to the hopper 9a and has a feature that makes it easy. The auxiliary seedling frame 39 has an advantage that when the vehicle height of the seedling transplanter is lowered, the auxiliary seedling frame 39 can be lowered by being placed in the rear position of the lower fuel tank 20 by the action of the pantograph.

  The axle 3 is configured such that the first frame 4 and the second frame 5 can be supported on the outer sides of the first frame 4 and the second frame 5, and the tread of the front and rear wheels can be adjusted. Therefore, the right and left front wheels 7 and the rear wheels 6 have an advantage that the transplanting operation can be performed while adjusting the tread according to the ridge width (groove width) of the field in which the seedling is transplanted.

  And, as shown in FIG. 4, the pressure-reducing wheels 40, 40 are arranged and provided on both rear sides of the seedling planting device 9, and are configured to press the soil around the seedling immediately after planting to promote its survival. However, the operator can use the pressure-reducing wheels 40, 40 as planting markers when transplanting seedlings. In particular, the support frame 41 of the pressure-reducing wheels 40, 40 can be used as a full-scale marker at the time of planting if the memory 42 is attached as shown in FIG.

  Next, the embodiment shown in FIG. 5 uses the vehicle body 8 that supports the first frame 4 and the second frame 5 already described so as to be able to rotate by intersecting at the position of the axle 3 as it is. Although a riding-type work cart 45 having a seat 43 is shown, the first frame 4 is adjusted within the range of the adjustment long hole 46 with the pivot fulcrum P as a fulcrum, and is locked with the knob bolt 47.

  As shown in the drawing, the working carriage 45 according to the embodiment adjusts the first frame 4 within the range of the adjustment long hole 46 and fixes it with the knob bolt 47, but this changes the angle of the seat 43, and the preference. It is possible to select the working posture.

  Next, in the embodiment shown in FIG. 6, a spraying vehicle for medicines or the like using the vehicle body 8 that supports the first frame 4 and the second frame 5 already described so as to intersect with each other at the position of the axle 3 so as to be rotatable. Is configured. The spreader vehicle is equipped with a chemical solution tank 48 and is configured to spray the chemical solution from the connected spray nozzle 49. The chemical tank 48 is provided with a pump connected thereto and is driven by the engine 1.

Side view of seedling transplanter Action side view of seedling transplanter Side view of seedling transplanter of another embodiment Top view of seedling transplanter Side view of work cart of another embodiment The side view of the spreading vehicle of another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine 2 Mission case 3 Axle 4 1st frame 5 2nd frame 6 Rear wheel 7 Front wheel 8 Body frame 9 Seedling planting device 10 Transmission case.

Claims (2)

  The transmission case (2) is provided with an axle (3) extending laterally from the left and right sides of the transmission case (2), and the axle (3) as a pivot point (P). Two frames (5) are crossed, the second frame (5) is provided with a rear wheel (6), and the first frame (4) is provided with a front wheel (7). A seedling transplanting machine configured by providing a planting device (9) on the vehicle body (8) supported and supported on the upper part of the first frame (4) and the second frame (5).   Either the first frame (4) or the second frame (5) is constituted by a transmission case (10) also serving as a frame, and the transmission case (10) travels from the transmission case (2). Power is transmitted to the front wheel (7) or the rear wheel (6), and the vehicle body (8) has the first frame (4) and the second frame centered on the rotation fulcrum (P). The seedling transplanting machine according to claim 1, wherein the seedling transplanting device (9) is inserted into the soil to transplant the seedling while moving up and down with the rotation of (5).

Images