JP2012143191A - Seedling planting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simpler structure of a driving mechanism for a scraper than a conventional art for scraping soil attached to a seedling planting body, in a seedling planting machine for planting seedlings in a field with the seedling planting body.SOLUTION: In the seedling planting machine, a seedling planting body case 63 is lifted by a rear link 68A and a front link 68B operated with the driving force from a planting transmission case 18, and a left seedling planting body 4aL and a right seedling planting body 4aR are disposed to be opened/closed in the lateral direction in the planting body case 63. The seedling planting machine also includes the scraper 70 for scraping soil by making slide contact with the inner/outer peripheral surfaces of the rising or falling left and right seedling planting bodies 4aL and 4aR. In the seedling planting machine, the scraper driving mechanism 50 for moving the scraper 70 to a position intersecting the rising or falling seedling planting bodies 4a is operated with the lifting motion of the rear link 68A and the front link 68B.

Description

  This invention belongs to the technical field of a seedling planting machine for planting seedlings in a field using a seedling planting body.

  The seedling transplanter has a seedling planting body that accepts seedlings and moves up and down. The seedling planting body is stabbed into the field and opened to the left and right to leave the seedlings in the field and plant them. And, the mud of the field adheres to the inner and outer peripheral surfaces of the seedling planting body after planting the seedling, and this adhered mud inhibits the movement of the seedling from the seedling planting body to the field when the next seedling is planted. Japanese Unexamined Patent Publication No. 2010-5123 discloses a technique for providing a scraper that scrapes off the mud adhering to the seedling planting body.

JP 2010-5123 A

  In the above prior art, the scraper drive mechanism is provided separately from the vertical drive part of the link mechanism of the seedling planting body, and the scraper is driven. difficult.

  Therefore, the present invention provides a drive mechanism for a scraper that scrapes off mud adhering to a seedling planting body in a seedling planting machine for planting seedlings in a field with a seedling planting body with a simpler configuration than conventional techniques. It is.

The problems of the present invention are solved by the following technical means.
According to the first aspect of the present invention, the seedling planting body case 63 is moved up and down by the rear link 68A and the front link 68B that are operated by the driving force from the planting transmission case 18, and the seedling planting body case 63 is opened and closed left and right. A seedling planting provided with a left seedling planting body 4aL and a right seedling planting body 4aR, and provided with a scraper 70 that slides and contacts the inner and outer peripheral surfaces of the left and right seedling planting body 4aL and the right seedling planting body 4aR. In this machine, the scraper driving mechanism 50 for moving the scraper 70 to a position intersecting with the raising / lowering seedling planting body 4a is operated by the raising / lowering operation of the rear link 68A and the front link 68B. .

  With this configuration, since the scraper driving mechanism 50 of the scraper 70 is driven by the raising and lowering operations of the rear link 68A and the front link 68B, the configuration is simplified and driven in synchronization with the raising and lowering operation of the seedling planting body 4a. The scraper 70 is intruded into the left seedling planting body 4aL and the right seedling planting body 4aR that are opened to the left and right at good timing, and the inside is scraped.

  The invention described in claim 2 is characterized in that the scraper drive mechanism 50 is configured such that the cam plate 56 provided with the scraper 70 is driven to rotate while abutting against one of the rear link 68A and the front link 68B. The seedling transplanter according to Item 1 was used.

With this configuration, the scraper driving mechanism 50 can be configured with a simple configuration in which the cam plate 56 provided with the scraper 70 is provided.
According to the third aspect of the present invention, the cam plate 56 is provided below the rear link 68A and the front link 68B, and the upper cam surface of the cam plate 56 is brought into contact with the rear link 68A approaching the cam plate 56 to drive the scraper. The seedling transplanter according to claim 2, wherein the mechanism 50 is configured.

With this configuration, the cam plate 56 can be made small and the scraper drive mechanism 50 can be lightened.
According to a fourth aspect of the present invention, there is provided a seedling transplanter according to the second aspect, wherein a roller is provided at the upper end of the cam plate 56, and the roller is brought into contact with one of the rear link 68A and the front link 68B.
With this configuration, the cam plate 56 can be smoothly rotated to improve the durability of the scraper driving mechanism 50.

  In the invention described in claim 5, the scraper drive mechanism 50 is brought into contact with the inner and outer peripheral surfaces of the seedling planting body 4a in a forward inclined state from the front side with respect to the seedling planting body 4a that moves up and down substantially vertically. It was set as the seedling transplanter described in 1.

  With this configuration, mud adhering to the inner and outer peripheral surfaces of the seedling planting body 4 a by the scraper 70 is gently scraped off by the scraper 70.

  By the structure of Claims 1 thru | or 5, the scraper 70 is driven with the scraper drive mechanism 50 simpler than before, and the mud adhering to the seedling planting body 4a is scraped off effectively.

It is a left view of the seedling planting machine by one Embodiment of this invention. It is a perspective view of a seedling planting device. It is an expanded side view of the back link which raises / lowers a seedling planting body. It is a bottom view of a scraper. It is explanatory drawing which shows the positional relationship of the scraper 70 which acts on the seedling planting body 4a with respect to the movement of the seedling planting body 4a. It is a left view of the 2nd Example of the scraper structure different from this invention. It is a front view of the 3rd example of a scraper composition different from the present invention. It is a right view of the 3rd Example of the scraper structure different from this invention.

  In an embodiment of the present invention, a seedling planting machine for planting seedlings such as green onions in a groove portion or flat ground between ridges will be described with reference to the drawings.

  In the description of the present embodiment, when referring to the front or rear, the side on which the steering handle 2 is disposed is the rear, and the opposite side, that is, the side on which the engine 5 is disposed is the front. When the term “right” or “left” is used, the right hand side is referred to as the right and the left hand side is referred to as the left when viewed from the operator standing at the front of the aircraft at the front of the aircraft.

  The seedling planting machine 4 includes a traveling body 1 and a steering handle 2, and a seedling planting apparatus 4 including a beak-like seedling planting body 4 a that can be opened and closed by connecting to a link mechanism 3 that is driven to move up and down. It is set as the structure which provided.

  In the illustrated example, the traveling device 1 includes an engine 5, a pair of left and right rear wheels 7 and 7 that are driven and rotated by transmission of the power of the engine 5, and a pair of left and right front wheels 6 and 6 that are rotatably supported. It is supposed to be prepared.

  A mission case 8 is disposed below the engine 5, and the mission case 8 has a case portion extending from the left side portion to the left side of the engine 5, and this is connected to the left side portion of the engine 5. The output shaft of the engine 5 enters the case portion and power is transmitted to the transmission mechanism in the transmission case 8. The transmission case 9, 9 is rotatably attached to the left and right side portions of the transmission case 8, and the tip of the wheel drive shaft 9A is extended from the transmission case 8 to the left and right outer sides at the rotation center of the transmission case 9, 9. Enters the transmission case 9, 9 to transmit power for traveling. The driving power is transmitted to the axles 10 and 10 that extend to the rear side of the machine body and project to the rear end side via the transmission mechanism in the transmission cases 9 and 9, and are fixed to the axles 10 and 10. 7 and 7 are driven to rotate.

  Further, upwardly extending arms 9B and 9B are integrally attached to the attachment portions of the transmission cases 9 and 9 to the transmission case 8. A horizontal rod (not shown) is attached to the tip of a piston rod (not shown) of the elevating hydraulic cylinder 15, and the left and right ends of the horizontal rod are connected to the left and right arms 9B and 9B, respectively.

  Then, when the lifting hydraulic cylinder 15 is actuated and the piston rod protrudes, the transmission cases 9 and 9 are rotated downward via the horizontal arm and the left and right arms 9B and 9B, and the airframe is raised. On the contrary, when the piston rod of the lifting hydraulic cylinder 15 contracts, the left and right arms 9B and 9B rotate forward, and accordingly, the transmission cases 9 and 9 rotate upward, and the airframe descends.

  The lifting / lowering hydraulic cylinder 15 is configured to operate the machine body at a set height with respect to the farm scene (畝 U) based on the detection result of the sensor that detects the height of the farm scene (畝 U) with respect to the machine body. In addition, it is configured to operate so as to raise or lower the machine body by an artificial operation of the operation tool 28 disposed in the vicinity of the steering handle 2.

  Further, when a piston rod (not shown) of the left / right horizontal control hydraulic cylinder 13 extends and contracts, the left transmission case 9 is moved up and down to tilt the machine body to the left and right. The left / right horizontal control hydraulic cylinder 13 is configured to operate so that the airframe is in a desired left / right inclined posture based on an operation of a manual lever.

The pair of front wheels 6 and 6 are rotatably attached to an axle 17 attached to a pair of left and right front wheel support frames 16 supported by the vehicle body.
The steering handle 2 is attached to the rear end portion of the body frame 14 whose front end portion is fixed to the mission case 8. The body frame 14 is disposed at a position deviated from the right and left center of the body to the right side and extends rearward, and extends obliquely rearward and upward from the front and rear intermediate portion. The steering handle 2 extends rearward from the rear end portion of the body frame 14 to the left and right, and the rear end portions thereof serve as grip portions 2 a and 2 a 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 grip the grip portions 2a, 2a with hands. In the illustrated example, the grip portions 2a and 2a are divided into left and right. However, the left and right rear end portions of the steering handle 2 may be connected to each other left and right, and the connecting portions may be used as the grip portions 2a and 2a.

  The planting transmission case 18 that houses the planting transmission mechanism that transmits the power of the engine 5 has a front portion connected to the rear portion of the transmission case 8 and a first case portion 18a extending obliquely upward from the first case portion 18a. The second case portion 18b is fixed to the upper left side of the case portion 18a and extends to the front lower side, and the third case portion 18c is fixed to the left end portion of the second case portion 18b and extends rearward. Yes. A power transmission mechanism for transmitting power for driving the link mechanism 3 to move up and down is provided in the first case portion 18a to the third case portion 18c.

  The transmission mechanism built in the first case portion 18a includes an intermittent drive mechanism that stops the link mechanism 3 and the seedling planting device 4 at the uppermost position of the raising / lowering movement or at a position in the vicinity thereof, and a link. And a clutch mechanism for stopping the lifting and lowering of the mechanism 3 and the seedling planting device 4. The time for stopping by the intermittent drive mechanism is adjusted by a speed change mechanism provided in the intermittent drive mechanism, and the adjustment between the seedling planting stocks by the seedling planting device 4 is adjusted by this adjustment.

  The link mechanism 3 moves up and down while swinging up and down by an operating mechanism described later, and as a result, the link mechanism 3 extends toward the lower side of the seedling planting device 4 and opens in the left-right direction. Moves up and down along a substantially elliptical trajectory (A) that is long in the side view.

  Then, the seedling planting device 4 that stores the seedlings that have fallen into the seedling planting body case 63 is lowered by the link mechanism 3 according to a substantially elliptical trajectory (A) that is long in the side view and inserted into the field, When the right and left beak-like seedling planting bodies 4a are opened in the lateral direction of the machine body, the seedlings are planted in the field, and then the seedling planting device 4 is raised.

  The lower end of the seedling planting body 4a rotates up and down in a substantially elliptical locus (A) when viewed from the left side in a counterclockwise direction. Accordingly, when the seedling planting body 4a is turned up and down so as to draw the locus in the above rotation direction while traveling, the lower end portion of the seedling planting body 4a is in the soil of the straw of the farm field. The seedling planting body 4a opens in the left-right direction of the machine body and releases the seedlings in the seedling planting device 4 to the soil of the straw. Therefore, the mud brought to the slope of the adjacent ridge in the left-right direction of the seedling in the seedling planting body 4a easily flows into the periphery of the seedling again, and is more easily covered with the pressure-reducing wheels 38, 38. Moreover, it can prevent disturbing the planting posture of the seedling by the seedling planting body 4a hitting the seedling planted when the seedling is planted in the soil of the groove and inserted and raised by opening in the left-right direction of the aircraft. it can. This is particularly effective when planting long seedlings such as green onions.

  The link mechanism 3 includes a rear link support arm 67A rotatably attached to a support portion 18d protruding upward from the third case portion 18c, and then a rear end of a rear link 68A whose base portion is pivotally attached to the link support arm 67A. The rear rotation shaft 63A of the seedling planting body case 63 is coupled to the rear rotation shaft 63A. A rear link drive arm 69A provided at the rear end of the third case portion 18c is connected to the middle portion of the rear link 68A. Further, the front link support arm 67B is rotatably attached to the second case portion 18b, and then the front rotation shaft of the seedling planting case 63 is attached to the rear end of the front link 68B pivotally attached to the link support arm 67B. 63B is connected. A front link driving arm 69B provided at the rear end of the third case portion 18c is connected to the middle portion of the front link 68B.

  When the rear link drive arm 69A and the front link drive arm 69B are driven and rotated, the rear link 68A and the front link 68B swing up and down while changing the position of the base portion back and forth, and the seedling planting tool 4a moves up and down with a fixed posture. Move.

  In the seedling planting case 63, a left opening / closing arm part 45 to which the left seedling planting body 4aL is attached and a right opening / closing arm part 44 to which the right seedling planting body 4aR is attached rotate around a pivot shaft 46 in the front-rear direction. It is pivotally supported.

  The end of the inner wire 43a of the opening / closing cable 43 is connected to the tip of the left opening / closing arm part 45 to which the left seedling planting body 4aL is attached, and the right opening / closing arm part 44 to which the right seedling planting body 4aR is attached. An end of the outer cable 43b of the opening / closing cable 43 is connected to the tip, and an operating arm 65 extending upward from the pivot shaft 64 of the rear link support arm 67B is provided. The other end of the inner wire 43a of the cable 43 is connected, and the other end of the outer cable 43b of the opening / closing cable 43 is fixedly attached to the machine body side.

  The operating arm 65 is configured to rotate forward at the set timing. As a result, when the seedling planting body 4a moves up and down to reach the lower end position, the operating arm 65 rotates forward, and the inner wire 43a is pulled to the right side with respect to the outer cable 43b of the opening / closing cable 43. The left opening / closing arm part 45 and the right opening / closing arm part 44 rotate so as to approach each other, the right seedling planting body 4aR rotates to the right, and in conjunction with this, the left seedling planting body 4aL moves to the left. And the lower part side of the seedling planting body 4a opens to the left and right, and opens downward. When the seedling planting body 4a is raised, the operating arm 64 is rotated to the original position (rear side) with respect to the seedling planting body 4a, and the inner wire 43a of the opening / closing cable 43 is loosened and opened to the left and right. The lower part of the seedling planting body 4a is closed.

The left seedling planting body 4aL and the right seedling planting body 4aR are urged by a spring 65 to rotate toward the side where the lower part of the seedling planting body 4a is closed.
When the seedling planting tool 4a is at the top dead center, the seedling supply device 40 drops and supplies the seedling. The supplied seedling is guided into the seedling planting tool 4a through a cylindrical seedling planting body case 63 attached to the left seedling planting body 4aL and the right seedling planting body 4aR. The seedling planting tool 4a holding the seedling descends, and at the bottom dead center, the lower part of the seedling planting tool 4a pierces the topsoil portion of the cocoon and forms a seedling transplanting hole. Almost in synchronization with this, the seedling planting tool 4a opens to the left and right, and the held seedling is released into the seedling transplanting hole. The seedling planting tool 4a rises as it is, and when it rises to near the top dead center, the seedling planting tool 4a is closed.

Next, the scraper driving mechanism 50 that moves back and forth in the scraper 70 will be described.
The rear link support arm 67A extends an operating arm 58 downward from the pivot shaft 55 with respect to the rear link 68A, and a triangular cam plate 56 is pivotally supported by a shaft 57 at the tip thereof in a side view. The base portion of the actuating arm 59 for driving 70 is fixed.

  The upper end of the cam plate 56 is in contact with the lower end edge of the rear link 68A by a spring 60 stretched between the rear link support arm 67A. Then, the operation of rotating the cam plate 56 by the back and forth movement of the rear link 68A and moving the scraper 70 attached to the tip of the operating arm 59 in the back and forth direction (arrow C direction) is repeated. Incidentally, the lower end edge of the rear link 68A forms a cam surface 47 as shown in FIG. Further, when a roller is provided at the upper end of the cam plate 56 and abuts against the lower end edge of the rear link 68A, the movement of the cam plate 56 becomes smooth.

  In this way, the scraper 70 is moved in the front-rear direction (arrow C direction) in accordance with the vertical movement of the seedling planting body 4a, and the scraper 70 is moved from the left seedling planting body 4aL and the right seedling planting body 4aR of the seedling planting body 4a. It moves to a position away from the left side seedling planting body 4aL and the right seedling planting body 4aR.

  As shown in the bottom view of the scraper 70 in FIG. 4, the scraper 70 having a plane inclined at the tip of the operating arm 59 is located outside the pair of left and right seedling planting bodies 4aL and 4aR of the left and right seedling planting bodies 4a. A substantially “U” -shaped outer scraper 70a that acts on the outer side surfaces of the left seedling planting body 4aL and the right seedling planting body 4aR and the left seedling planting body so that both the side surface and the inner side surface can be cleaned. 4aL and a substantially triangular inner scraper 70b having a sharp tip acting on the inner surface of the right seedling planting body 4aR. The outer scraper 70a and the inner scraper 70b are rubber members supported by a metal scraper frame 71 having a generally “Y” shape, and mud attached to the surfaces of the left seedling planting body 4aL and the right seedling planting body 4aR. There is no noise when scraping.

  The outer scraper 70a supports the scraper frame 71 with three or more stoppers 71a to 71c so that the rubber outer scraper 70a has a waist. Further, the rubber inner scraper 70b is supported on the central protruding piece of the scraper frame 71 by the stoppers of one stopper 71d.

  Since the "U" -shaped tip of the outer scraper 70a is a protrusion 70a1, the protrusion 70a1 of the scraper 70 is inserted into the beak body 4a1, when the outer scraper 70a is inserted outside the pair of open beak bodies 4a1, 4a2. The scraper 70 can be inserted into the outside of the beak bodies 4a1 and 4a2 surely along the outer surface of 4a2.

  Also, the substantially triangular tip of the inner scraper 70b is for allowing the left seedling planting body 4aL and the right seedling planting body 4aR to easily enter both sides of the inner scraper 70b. Further, since the outer scraper 70a is attached to the lower side of the metal scraper frame 71, even if the scraper 70 is turned upward, it is supported by the metal scraper frame 71, and the rubber scraper 70 is hardly cut. Further, the rear part of the inner scraper 70b is widened, but the rear part is also supported by the metal scraper frame 71 at the center, so that the left seedling planting body 4aL and the right seedling planting can be taken out. The mud on the rear side of the appendage 4aR can be easily removed.

Thus, the mud adhering to the inner and outer surfaces of the seedling planting body 4a by the inner and outer scrapers 70 can be easily removed by a single cleaning operation.
From the above configuration, the configuration of the scraper 70 and the seedling planted body has the following operations and operational effects.

  When seedlings are planted in the field with the seedling planting body 4a, the lower ends of the left and right pair of left seedling planting body 4aL and the right seedling planting body 4aR open left and right to open the seedlings, and the locus remains open. (B) moves upward, but the inner scraper 70b and the outer scraper 70a enter the inside and outside of the pair of left and right left seedling planting bodies 4aL and right seedling planting body 4aR in the opened state, and the left seedling planting body In the process of raising 4aL and the right seedling planting body 4aR, mud adhering to the inner and outer surfaces of the beak bodies 4a1 and 4a2 is removed by the inner scraper 70b and the outer scraper 70a.

  Further, the maximum width A of the inner scraper 70b acting on the inside of the left seedling planting body 4aL and the right seedling planting body 4aR is the maximum when the pair of left seedling planting body 4aL and right seedling planting body 4aR is opened to the maximum. It is larger than the interval between the beak bodies 4a1 and 4a2. Furthermore, the shape of the width B of the inner scraper 70b acting on the inside of the beak bodies 4a1 and 4a2 is configured to match the inner shape of the left seedling planting body 4aL and the right seedling planting body 4aR, and the beak body 4a1. , 4a2 is thinned so that it can easily enter.

FIG. 5 is an explanatory diagram showing the positional relationship of the scraper 70 acting on the seedling planting body 4a with respect to the movement of the seedling planting body 4a.
As shown in FIG. 5 (a) to FIG. 5 (h), the seedling planting body 4a is planted between FIG. 5 (a) and FIG. 5 (c) in the process of moving according to the locus (b) (FIG. 1). The attached body 4a descends to plant seedlings in the field at the position shown in FIG. 5 (c), and thereafter the seedling attached body 4a rises between FIGS. 5 (d) to 5 (h). While the planted body 4a is rising, the substantially triangular inner scraper 70b of the scraper 70 approaches the seedling planted body 4a from the upper side in the vertical direction, and is substantially at the position shown in FIG. Then, the scraper 70 is inserted into the pair of left and right beak bodies 4a1 and 4a2 with the front end portion opened. At this time, the tip portion of the scraper 70 is turned upward, smoothly enters the seedling planting body 4a, and the scraper 70 hits the side surface portion of the seedling planting body 4a between FIG. 4 (e) to FIG. 4 (g). Since the seedling planting body 4a rises in the meantime, the mud attached to the pair of beak bodies 4a1 and 4a2 can be surely dropped.

  As described above, the operating arm 69 of the scraper 70 is swung back and forth while being supported by the shaft 57 by the rotation of the cam plate 56, and the scraper 70 is planted in the process of raising the seedling planting body 4a. The body 4a acts so as to move in the front-rear direction shown by the arrow C (FIG. 3) in FIG.

  Further, since the scraper 70 inserted into the seedling planting body 4a moves as if entering from the upper side of the seedling planting body 4a and coming out downward, the mud of the seedling planting body 4a is surely dropped from above to below. In addition, mud does not collect in the scraper 70.

  Further, the scraper 70 escapes from the seedling planting body 4a in the process of raising the seedling planting body 4a after the scraper 70 removes the mud of the seedling planting body 4a with respect to the locus (b) of the seedling planting body 4a. It has become the composition.

  A seedling supply device 40 that supplies seedlings to the seedling planting device 4 connects one rotating shaft 51a of the sprocket (not shown) arranged on the left and right of the machine body and the first case portion 18a via the transmission shaft 52. Thus, the power from the engine 5 is transmitted to rotate the left and right sprockets so that the seedling supply cup 41 is moved around.

  A large number of seedling supply cups 41 are connected above the seedling supply device 40 at equal intervals, and a guide body 42 that guides the movement of the seedling supply cup 41 along the circular movement trajectory of the seedling supply cup 41. Provided inside and outside respectively. Thereby, the revolving movement of the seedling supply cups 41 is performed accurately and smoothly.

At a predetermined position during the circular movement of the seedling supply cup 41, the bottom lid is opened, and the seedling in the cup 41 is supplied to the seedling planting body 4a from the upper opening of the seedling planting body 4a.
A first inter-strain adjustment lever is provided on the right side of the mission case 8, and the meshing of the gear in the mission case 8 is changed by operating the first inter-strain adjustment lever to drive the seedling planting device 4 with respect to the traveling speed of the aircraft. It is possible to change between planting stocks by shifting gears. Separately, a second inter-strain adjustment lever is provided on the right side of the planting transmission case 18, and the meshing speed of the gear in the planting transmission case 18 is changed by operating the second inter-strain adjustment lever. The intermittent drive cycle of the seedling planting device 4 is changed so that the seedling planting plant can be changed.

  An operation panel 29 is provided on the front side of the steering handle 2 and on the rear side of the seedling supply device 40. The operation panel 29 includes a main clutch lever that can turn on and off the rear wheels 7 and 7 and the seedling planting device 4, and the lifting and lowering operation of the machine body by the hydraulic lifting cylinder 15 and the drive of only the seedling planting device 4. A planting / elevating (sub-clutch) lever (operating tool) 28 that can be cut is provided. Further, a side clutch lever 30 is provided below the left and right grips 2a, 2a of the steering handle 2, and the left and right driving of the pair of left and right rear wheels 7, 7 is cut off by operating the side clutch lever 30. It has become. Then, the operator depresses the steering handle 2 and operates the left and right side clutch levers 30 with the front wheels 6 and 6 floating in the air to cut off the driving of the left and right rear wheels 7. Is designed to swivel.

  A pair of left and right pressure-reducing wheels 38 are provided at the rear of the seedling planting position. The pressure-reducing wheels 38, 38 are attached obliquely so that the distance from each other is narrower toward the lower part, and are pressed downward by a weight 39 provided on the upper part of the support arm 37. The soil around the seedling transplant hole after the seedling has been planted collapses and refills the hole, and the trace is lightly crushed.

FIG. 6 is a left side view of the second embodiment showing a scraper drive configuration different from the present invention.
A rod support arm 20 protrudes forward from the seedling planting case 63, and a scraper mounting shaft 21 is provided on the rod support arm 20 so as to slide up and down and project downward with a compression spring 22, and this scraper mounting shaft. A scraper 70 is attached to the lower end shaft 24 of 21 so as to rotate back and forth, and the wire 25 is connected to the upper end with play. A guide plate 23 is provided between the scraper mounting shaft 21 and the seedling planting body 4a, and the scraper 70 is separated from the seedling planting body 4a while the lower end of the scraper 70 is in contact with the guide plate 23.

  While the seedling planting case 63 is rising, the scraper mounting shaft 21 is pulled upward by the wire 25 and the scraper 70 is in contact with the guide plate 23. However, when the seedling planting case 63 is lowered, the wire When the scraper mounting shaft 21 slides downward by the compression spring 22 and the scraper 70 comes into contact with the outer peripheral surface of the seedling planting body 4a, and the seedling planting body 4a opens to the left and right, the seedling planting body The tip of the scraper 70 enters the inside of 4a and comes into contact with the inner peripheral surface of the seedling planting body 4a to scrape off mud.

  The position where the scraper 70 contacts the seedling planting body 4a can be changed and adjusted by moving the guide plate 23 up and down. If the scraper 70 is tilted to the seedling planting body 4a side and removed from the guide plate 23, the seedling planting body 4a. Get in touch with.

7 and 8 show a third embodiment showing a scraper driving configuration different from that of the present invention.
A scraper mounting shaft 21 is slid up and down on the rod support arm 20 provided on the side surface of the seedling planting body 4 a and is projected downward by a compression spring 22. A plate-like shape is provided at the lower end of the scraper mounting shaft 21. The inner scraper 70c and the outer scraper 70d are attached, and the inner scraper 70c is inserted into the inside through the slit 27 provided in the seedling planting body 4a, and the outer scraper 70d is in contact with the outer peripheral surface of the seedling planting body 4a. A wire 25 is connected to the upper end of the shaft 21. Further, the lower end of the outer scraper 70d is bent in an L shape, and the soil or multi-film is pressed downward on the bent surface.

  While the seedling planting case 63 is rising, the scraper mounting shaft 21 is pushed downward by the compression spring 22 so that the scraper 70 enters the seedling planting body 4a and the seedling planting case 63 is lowered. Then, the scraper mounting shaft 21 is pulled by the wire 25 and almost all is pulled out of the seedling planting body 4a. The upper and lower slides of the scraper 70 are performed in the vicinity of the bottom dead center of the seedling planting body 4a, and the scraper 70 becomes a seedling guide surface at a position higher than that. For this purpose, the scraper 70 is a resin plate having vertical stripes formed on the inner surface. Further, the scraper 70 moves up and down to push down the root pot of the seedling. However, since the vertical movement is small, the seedling is not brought back.

4a seedling planting body 4aL left seedling planting body 4aR right seedling planting body 18 planting transmission case 50 scraper drive mechanism 56 cam plate 63 seedling planting body case 68A rear link 68B front link 70 scraper

Claims (5)

  The seedling planting case (63) is moved up and down by the rear link (68A) and the front link (68B) that are operated by the driving force from the planting transmission case (18), and the left and right is opened and closed to the seedling planting body case (63). Therefore, the left seedling planting body (4aL) and the right seedling planting body (4aR) are provided, and the left and right seedling planting bodies (4aL) and the right seedling planting body (4aR) are in sliding contact with the inner and outer peripheral surfaces. In the seedling planter provided with the scraper (70) to be scraped off, a scraper driving mechanism (50) for moving the scraper (70) to a position intersecting with the seedling planting body (4a) that moves up and down is connected to the rear link (68A). A seedling planting machine, which is operated by raising and lowering the front link (68B).   The scraper drive mechanism (50) is configured such that the cam plate (56) provided with the scraper (70) is rotationally driven by contacting one of the rear link (68A) and the front link (68B). The seedling transplanter according to claim 1.   The cam plate (56) is provided below the rear link (68A) and the front link (68B), and the upper cam surface of the cam plate (56) is brought into contact with the rear link (68A) approaching the cam plate (56). The scraper driving mechanism (50) is configured as a seedling transplanter according to claim 2.   The seedling transplanter according to claim 2, wherein a roller is provided at an upper end of the cam plate (56), and the roller is brought into contact with one of the rear link (68A) and the front link (68B).   The scraper drive mechanism (50) is brought into contact with the inner and outer peripheral surfaces of the seedling planting body (4a) in a forward inclined state from the front side with respect to the seedling planting body (4a) that moves up and down substantially vertically. Seedling machine.

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