JP2020031612A - Transplanting machine - Google Patents

Abstract

To provide a transplanting machine capable of freely adjusting an interrow of left and right planting devices without interfering with a lifting/lowering link mechanism, etc.SOLUTION: A transplanting machine includes a seedling supply device 43 for supplying seedlings to a traveling vehicle body 40, planting hoppers 20a, 20b for receiving the seedlings from the seedling supply device 43 and planting them in a field, and a lifting/lowering member 21 for lifting and lowering the planting hoppers 20a, 20b. A machine body rear side of the lifting/lowering member 21 is provided in a turning manner to a link holder 210. A notch 221 is formed in the machine body rear side of the link holder 210. A connecting member 209 for connecting the planting hoppers 20a, 20b to the link holder 210 is provided in the notch 221. The connecting member 209 is configured so as to switch the planting hoppers 20a, 20b into a state capable of moving in the left and right directions, and a state of fixing left/right positions.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a transplanter for transplanting vegetable seedlings such as onions and lettuce in a field.

  2. Description of the Related Art Conventionally, there are known seedling transplanters that plant seedlings supplied from a seedling supply device in which a plurality of seedling containers move around, and which are capable of two-row planting on left and right sides (for example, see Patent Documents 1 and 2). ).

  These transplanters are configured to be able to move the planting device along an adjustment bar that is provided on the link holder of the elevating link mechanism and protrudes in the left and right direction. This is to set an appropriate distance between the right and left seedlings, that is, a so-called interval.

Registration No. 5348219 Registration No. 5712461

  However, in the transplanting machine disclosed in Patent Document 1, since the lifting link mechanism is located at a position that regulates the lateral movement of the planting device, particularly the movement to the side where the space between the lines is narrowed, the planting operation is performed over a certain narrow space between the lines. Has a problem that cannot be addressed.

  Further, in the transplanting machine of Patent Document 2, the moving mechanism of the implanting device is configured to move left and right along the adjustment bar penetrating the elevating link mechanism, so that the moving mechanism is not hindered by the elevating link mechanism. However, there is a problem in that when moving to the side where the space between the strips becomes narrow, the left and right moving mechanisms come into contact with each other, so that it is impossible to cope with the planting work in the space where the space between the strips is more than a certain value.

  The present invention has been made in consideration of the above-described problems of the conventional transplanting machine, and has an object to provide a transplanting machine that can freely adjust the distance between the left and right implanting devices without interfering with a lifting link mechanism or the like. I do.

  In order to solve the above problems, the following technical measures were taken.

  That is, the invention according to claim 1 provides a seedling supply device (43) for supplying seedlings to a traveling vehicle body (40), and a planting hopper (20a, 20b) for receiving seedlings from the seedling supply device (43) and planting the seedlings in a field. ) And a lifting member (21) for raising and lowering the planting hoppers (20a, 20b), the rear side of the body of the lifting member (21) is rotatably provided on a link holder (210), A notch (221) is formed on the rear side of the body of the link holder (210), and a connection member (209) for connecting the planting hoppers (20a, 20b) to the link holder (210) is provided in the notch (221). The connecting member (209) is characterized in that the transplanting hopper (20a, 20b) can be switched between a state in which the transplanting hopper (20a, 20b) can be moved in the left-right direction and a state in which the left and right positions are fixed.

  The invention according to claim 2 is that the upper and lower protrusions (222a) of the U-shaped adjustment support plate (222) are provided in contact with the notch (221) of the link holder (210) in a side view. A long hole (224) in the left-right direction is formed in the adjustment support plate (222), and the planting holder (225) supporting the planting hoppers (20a, 20b) is brought into contact with the adjustment support plate (222) to make the connection. The transplanter according to claim 1, wherein the adjustment support plate (222) and the planting holder (225) are connected by a member (209).

  The invention according to claim 3 is the transplanter according to claim 2, wherein the left and right central portions of the adjustment support plate (222) are located at the rear of the elevating member (21).

  According to a fourth aspect of the present invention, the lifting mechanism (21) includes upper and lower link arms (21a, 21b), and a position at which the upper link arm (21a) is mounted on the link holder (210) is defined by the following. The transplanter according to claim 2, wherein the lower link arm (21b) is located on the front side of the fuselage with respect to a position where the lower link arm (21b) is attached to the link holder (210).

  The invention according to claim 5 is characterized in that a transmission case (26) for driving the lifting member (21) up and down is provided, and the transmission case (26) is provided with a rotating link member (214) for vertically rotating the lifting member (21). ), And a swing rotator (211) for swinging the lift mechanism (21) back and forth, and a front portion of the lift mechanism (21) provided at a position other than the center of rotation of the swing rotator (211). When the planting hoppers (20a, 20b) rise from the bottom dead center, the lifting mechanism (21) is moved from the rear side of the fuselage to the front side to bring the planting hoppers (20a, 20b) into the forwardly inclined posture. The transplanter according to any one of claims 1 to 4, characterized in that:

  The invention according to claim 6, wherein the transmission case (26) is provided with an elevating arm (215) for elevating the elevating mechanism (21), and a connecting plate for connecting the elevating arm (215) to the elevating mechanism (21). (216), the connecting position of the connecting plate (216) and the elevating arm (215) is configured to be connected below the elevating mechanism (21) on the fuselage, and the connecting plate (216) is The transplanting machine according to claim 5, wherein the transplanting machine is located on the inside of the body with respect to the lifting mechanism (21).

  According to the first aspect of the present invention, the connecting member (209) allows the planting hoppers (20a, 20b) to move left and right, thereby changing the left and right positions of the planting hoppers (20a, 20b) to allow the seedlings to interstrain. Can be adjusted, so that it is possible to work between strains suitable for the type of seedling and cultivation conditions.

  Further, since the connecting member (209) is provided in the notch (221) formed in the link holder (210), the connecting member (209) can be operated using the space of the notch (221), so that planting is performed. The movable state and the fixed state of the hoppers (20a, 20b) can be easily switched, and work efficiency is improved.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, the upper and lower protrusions (222a) of the U-shaped adjustment support plate (222) are attached to the notch 209) by contact. Thereby, a space for operating the connecting member (209) can be sufficiently ensured, and the planting hopper (20a, 20b) can be easily switched between the movable state and the fixed state, thereby improving work efficiency. .

  In addition, since the elongated hole (224) in the left-right direction is formed, the range in which the planting holder (225) is moved can be easily grasped, so that the planting holder (225) can be connected to the right and left ends of the adjustment support plate (222). Is prevented from falling off, and work efficiency is improved.

  According to the third aspect of the present invention, in addition to the effect of the second aspect of the present invention, since the left and right central portions of the adjustment support plate (222) are located at the rear portion of the elevating member (21), the planting hopper (20a , 20b) can be widened in the left-right direction.

  Further, since the elevating member (21) does not hinder the left and right movement of the planting hoppers (20a, 20b), a wider adjustment range of the left and right positions of the planting hoppers (20a, 20b) can be secured.

  According to the fourth aspect of the present invention, in addition to the effect of the second aspect of the present invention, the position where the upper link arm (21a) is mounted on the link holder (210) is determined by connecting the lower link arm (21b) to the link holder (210). Since the planting hoppers (20a, 20b) can be tilted forward near the top dead center of the elevating trajectory by setting the planting hopper (20a, 20b) forward from the mounting position of the planting hopper on the planting hopper by inclination. (20a, 20b) can be guided to the inside lower part, and a seedling can be planted reliably in a field.

  Further, since the planting hoppers (20a, 20b) can be changed from the backward inclined posture to the forward inclined posture near the bottom dead center of the vertical trajectory, the planting hoppers (20a, 20b) form holes in the field scene. The range before and after the growth is suppressed, and it is possible to prevent the planted seedlings from falling down or being inclined and causing poor growth.

  According to the invention according to claim 5, in addition to the effect of the invention according to any one of claims 1 to 4, the lifting mechanism (21) is used when the planting hopper (20a, 20b) rises from the bottom dead center. By moving the planting hoppers (20a, 20b) from the rear side to the front side to make the planting hoppers (20a, 20b) tilt forward, the seedlings can be reliably received, and the planting accuracy of the seedlings is improved.

  According to the invention according to claim 6, in addition to the effect of the invention according to claim 5, by connecting the connecting plate (216) and the elevating arm (215) below the elevating mechanism (21), the center of gravity is set. Since it can be shifted downward, the body is less likely to tilt forward and backward due to the weight of the members and the like, and the planting depth and planting posture of the seedlings are stabilized.

  In addition, since the connecting plate (216) is located on the inner side of the body with respect to the elevating mechanism (21), the elevating mechanism (21) is configured not to receive a load directly from the elevating arm (215). Is improved.

Left side view of transplanter Right side view of the transplanter Rear view of transplanter Plan view of transplanter Side view showing the lifting mechanism and the mechanism for adjusting the spacing between the left and right planting hoppers Top view showing the lifting mechanism and the mechanism for adjusting the spacing between the left and right planting hoppers Rear view showing the lifting mechanism and the mechanism for adjusting the spacing between the left and right planting hoppers. The perspective view which shows the elevating mechanism and the space | interval adjustment mechanism of the left and right planting hopper. Rear view showing the main part of the opening and closing mechanism of the planting hopper (A) A rear view of a main part showing a gap adjusting plate, (b) A front view of a main part showing a gap adjusting plate. Side view showing a planting hopper equipped with a seedling guide of another configuration example A plan view showing a star wheel for guiding a seedling container in an arc portion Side view showing a star wheel that guides the seedling container in an arc (A) A main part side view showing that a bellows guide is arranged between a falling supply position of a seedling and a planting hopper in an ascending state, and (b) a bellows between a falling supply position of a seedling and a planting hopper in a descending state. Main part side view showing that the guide is arranged Right side view of the main part showing the internal structure of the stock switching gear case Left side view of main parts showing internal structure of inter-stock switching gear case Front view of main part showing internal structure of inter-stock switching gear case Rear view of main part showing internal structure of inter-stock switching gear case Left side view of main parts showing inter-stock switching gear case Rear view of main part showing inter-stock switching gear case Rear view of the main part showing the open state of the rear opening of the inter-stock switching gear case (A) Side view showing the first inter-stock shifter, (b) Side view showing the second inter-stock shifter Schematic diagram showing first and second sliding stoppers (A) Principal part side view showing a state in which an elevating hydraulic cylinder can expand and contract, (b) Principal part side view showing a state in which contraction of an elevating hydraulic cylinder is regulated Principal part side view showing another example of the configuration of the lock arm for restricting the contraction of the lifting hydraulic cylinder. Side view of main part showing detection of boarding of worker

  Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a left side view showing a transplanter 10 for transplanting onion seedlings as an example of a transplanter according to an embodiment of the present invention, FIG. 2 is a right side view of the transplanter 10, and FIG. FIG. 4 is a rear view of FIG. 10, and FIG. 4 is a plan view of the transplanter 10.

  In the following description, the side on which the steering handle 47 is disposed is referred to as a rear side, and the opposite side, that is, the side on which the engine 41 is disposed, is referred to as a front side. Then, the right hand side is set to the right and the left hand side is set to the left toward the front of the aircraft.

  The transplanter 10 of the present embodiment includes a traveling vehicle body 40 that allows the aircraft to travel forward, a steering handle 47 provided for walking control provided at a rear portion of the traveling vehicle body 40, and a planting device 42 for planting seedlings in a field. A seedling supply device 43 for supplying seedlings to the planting device 42 is provided.

  The running vehicle body 40 includes an engine 41, a pair of left and right drive wheels 44, which are driven by the power of the engine 41 and are driven to rotate, and a pair of left and right front wheels 45, which are rollably supported in front of the rear wheel 44. It has.

  A transmission case 39 is disposed behind the engine 41. The transmission case 39 has a case portion extending from the left side portion to the left side of the engine 41, and this case portion is connected to the left side portion of the engine 41. The output shaft of the engine 41 enters this case portion and power is transmitted to the transmission mechanism in the transmission case 39.

  On the left and right sides of the transmission case 39, a front portion of a traveling transmission case 38 that is long in the front and rear directions is rotatably attached. Specifically, an axle case that rotates integrally with the traveling transmission case 38 is provided inside the body at the front of the traveling transmission case 38, and the axle case 11 is rotated around the left and right sides of the transmission case 39. It is movably mounted, and the traveling transmission case 38 is rotatably mounted corresponding to the left and right sides of the transmission case 39. The rear wheel 44 is mounted on the rear wheel axle 12 protruding to the rear side of the traveling transmission case 38.

  The leading end of a wheel drive shaft extending left and right outward from the transmission case 39 enters the rotational axis position at the front portion of the traveling transmission case 38, and a transmission transmission change transmission unit in the transmission case 39. Is transmitted to the transmission mechanism in the traveling transmission case 38. The traveling power is transmitted to the rear axle 12 of the traveling transmission case 38 via a transmission mechanism in the traveling transmission case 38, and the rear wheel 44 is driven and rotated.

  Note that the left and right rear wheels 44 can be disconnected from driving by the left and right side clutches (not shown) provided in the transmission case 39. Therefore, when the body is turned, one of the left and right rear wheels 44 on the inner side of the turn is not driven by the side clutch so that the vehicle can turn smoothly.

  The drive unit 38 is connected to the traveling transmission case 38. The driving unit is configured to rotate the rear wheel 44 up and down with the front side of the traveling transmission case 38 as a pivot point. Specifically, an arm 13 extending upward is integrally attached to an attachment portion of the traveling transmission case 38 to the transmission case 39, and the elevating hydraulic cylinder 300 in which the arm 13 is fixed to the transmission case 39. Connected to the left and right sides of the connector attached to the tip of the piston rod. The left and right sides (right side) are connected by a connecting rod, and the other side (left side) is connected by a left and right horizontal control hydraulic cylinder that can expand and contract in accordance with the inclination of the body.

  When the lifting / lowering hydraulic cylinder 300 is operated and its piston rod projects rearward of the body, the left and right arms 13 rotate rearward, whereby the traveling transmission case 38 rotates downward, and the body rises. . Conversely, when the piston rod of the lifting hydraulic cylinder 300 moves forward and retracts into the cylinder, the left and right arms 13 rotate forward, and the traveling transmission case 38 rotates upward accordingly. The aircraft descends.

  The lifting hydraulic cylinder 300 is actuated by a sensor 14 which is in contact with the ridge surface and which operates according to a change in the vertical distance between the machine body and the ridge surface. The operation of the sensor 14 is an operation of detecting the height of the ridge upper surface with reference to the position of the fuselage. The configuration is such that the hydraulic cylinder 300 operates.

  When the left and right horizontal control hydraulic cylinder expands and contracts, the left arm 13 connected to the left and right horizontal control hydraulic cylinder rotates to move only the left rear wheel 44 up and down, thereby inclining the body horizontally. . The left-right horizontal control hydraulic cylinder is configured to operate based on the detection result of a sensor that detects the left-right inclination of the body with reference to the left-right horizontal, thereby making the body horizontal.

  The elevating hydraulic cylinder 300 expands and contracts according to the detection by the sensor 14 or the operation of an operation lever (not shown) provided at the rear part of the fuselage to change the vehicle height. However, when the vehicle is stopped for a long time, a load due to the weight of the machine body is applied to the lifting hydraulic cylinder 300, and the hydraulic oil naturally leaks, so that the lifting hydraulic cylinder 300 contracts and the vehicle height decreases. Sometimes. In particular, if the vehicle height is lowered during storage in a warehouse or the like where the aircraft is in a stopped state for a long period of time, the lower end portions of the sensor 14 and the planting hoppers 20a and 20b come into contact with the floor surface and may be deformed. The surface may be damaged.

  In order to prevent this, as shown in FIGS. 24 (a) and 24 (b), a fixing portion 301 of the lifting hydraulic cylinder 300 and an end of a sliding rod 302 which slides inside the fixing portion 301 are supported. A lock arm 304 is provided between the hydraulic balance 303 to be rotated up and down. The lock arm 304 has a pivot base on the hydraulic balance 303, and arranges a link cable 305 between an upper portion of the hydraulic balance 303 closer to the fixed portion 301 than the pivot base and the operation lever.

  When the body is stored, the operation lever is operated to the highest position, the hydraulic cylinder 300 for elevating is extended to the maximum, and the transmission case 38 is rotated to maximize the vehicle height. At this time, the connection arm 305 is loosely routed, so that the lock arm 304 rotates downward and enters the front and rear of the fixed part 301 and the hydraulic balance 303.

  Thereby, it is possible to prevent the hydraulic oil 300 from being contracted due to the leakage of the hydraulic oil, so that the vehicle height of the body can be maintained at the highest level, and the sensor 14 and the planting hopper 20a, 20b is prevented from being damaged or the floor surface is not damaged.

  When the operation lever is operated to the elevating operation position, the link cable 305 is pulled and the lock arm 304 is rotated upward, so that the elevating hydraulic cylinder 300 can be expanded and contracted, and the vehicle height can be adjusted up and down.

  As shown in FIG. 25, the lock arm 303 has a fan shape, and multi-stage lock portions 303a, 303b, 303c... Having different distances from the rotation support shaft to the end portions are formed on the end portions, and can be locked in multiple stages. May be configured. The multi-stage lock portions 303a, 303b, 303c... Increase the distance from the rotation axis to the end as the upper portion of the fuselage is increased, and the lifting and lowering hydraulic pressure is such that the lower portion of the lock portion has a smaller rotation angle of the lock arm 303. It is configured to prevent the cylinder 300 from contracting.

  As a result, the vehicle height other than the highest can be maintained, so that the aircraft body can be accommodated even in a narrow accommodation space in the vertical direction.

  A vertically long frame 17 is attached to the left and right sides of a horizontal frame 16 rotatably mounted around the longitudinal axis at a central position below the engine 41. Is rotatably mounted on a front wheel axle 18 fixed to the lower end side. Therefore, the left and right front wheels 45 are freely rotatable about the longitudinal center of the body at the center in the left and right direction. The vertical frame 17 is provided so as to be vertically adjustable with reference to the left and right sides of the horizontal frame 16, so that the height of the front wheel 45 can be adjusted.

  The steering handle 47 is provided at the rear of the vehicle body, and is located on the rear side of the rear wheel axle 12 with respect to the rear wheel 44. Specifically, it is attached to the rear end of the body frame 19 whose front end is fixed to the transmission case 39.

  The body frame 19 extends rearward at the left and right centers of the body, and extends obliquely rearward and upward from the front-rear middle part.

  The steering handle 47 extends rearward to the left and right from the rear end of the body frame 19, and each rear end is a grip portion of the steering handle 47.

  In FIG. 2, the grip portion is divided into left and right sides, but the left and right rear ends of the steering handle 47 may be connected to each other left and right, and the connection portion may be used as the grip portion.

  The planting device 42 moves the planting tool up and down between a plurality of beak-shaped planting tools whose tips are directed downward, and a position where the lower end of the planting tool is above the field scene and below the field scene. A vertical movement mechanism 21 for moving the lower end of the beak-shaped planting tool is closed to receive the seedling from above and accommodate the seedling inside, and the lower end of the planting tool is opened right and left and housed inside And an opening and closing mechanism for opening and closing the planting tool in an open state in which the seedlings can be released downward.

  As shown in FIGS. 1 to 8, the planting device 42 of the present embodiment has a double-row planting configuration in which a first planting hopper 20a and a second planting hopper 20b are arranged side by side. The first planting hopper 20a and the second planting hopper 20b are respectively mounted on vertical movement mechanisms 21 provided on both right and left sides of a transmission case 26 transmitted from a transmission case 39.

  The vertical movement mechanism 21 is composed of a pair of upper and lower link arms 21a and 21b. The upper and lower link arms 21a and 21b are mounted on the transmission case 26 so that the front end can be vertically rotated and the rear end. The unit side is mounted between the left and right of the left and right link holders 210 so as to be vertically rotatable. The front end of the upper link arm 21a is provided at a position separated from the rotation axis of the non-circular cam 211 rotatably mounted on the transmission case 26 to the outer peripheral edge side, and the planting hopper 20a vertically moved by the vertical movement mechanism 21. , 20b swing from front to back.

  The transmission case 26 is fixed to an upper portion of a mounting member having a lower portion fixed to the body frame 19. Further, the rear end portions of the planting hoppers 20a, 20b and the vertical movement mechanism 21 are located rearward of the fuselage with respect to the rear ends of the left and right rear wheels 44, 44 in a side view. Is a space part without other members.

  In particular, the position at which the front end of the upper link arm 21a is mounted on the non-circular cam 211 is determined by the static trajectory of the planting hoppers 20a, 20b from the time when the seedlings are received to the time when the planting hoppers 20a, 20b reach the bottom dead center. 20b is a position where the posture changes from the backward inclination posture to a posture substantially perpendicular to the field scene, and changes from the vertical posture to the forward inclination posture when it starts to rise from the bottom dead center.

  This makes it possible to shorten the time and distance of the seedlings to enter the soil in order to plant the seedlings in the movement trajectory of the planting hoppers 20a and 20b, so that the size of the planting holes formed by the planting hoppers 20a and 20b in the field is reduced. Since the seedlings are kept small, it is possible to prevent the seedlings from falling down and disturbing the planting posture.

  In addition, since the planting hoppers 20a and 20b are in a posture inclined greatly forward in the vicinity of the top dead center, the plants are planted at the falling supply position of the seedling supply device 43 which transports the seedlings to be thrown to a predetermined position and supplies them. Since the upper ends of the hoppers 20a and 20b can be brought close to each other, seedlings are not supplied into the planting hoppers 20a and 20b, and the occurrence of lack of stock is prevented.

  When the seedlings are dropped and supplied, the planting hoppers 20a and 20b are in an inclined position, so that the seedlings that have entered the planting hoppers 20a and 20b are slid from the upper side to the lower side and moved. Therefore, seedlings remain in the planting hoppers 20a and 20b, and even if the planting hoppers 20a and 20b enter the soil, the seedlings are not planted and the occurrence of lack of stock is prevented.

  An adjustment plate 212 having a plurality of arc-shaped adjustment slots 212a is arranged between the non-circular cam 211 and the upper link arm 21a, and a fixing member such as a bolt is inserted into the adjustment slots 212a. By changing the position, it is possible to adjust the front and rear inclination angles of the planting hoppers 20a and 20b intended by the operator.

  Thereby, the front and rear inclination angles of the planting hoppers 20a and 20b can be appropriately adjusted according to working conditions such as the length of the seedling and the planting depth, so that the seedling is planted in a posture and planting depth suitable for growth. , The growth of seedlings will be good.

  The lifting drive force of the vertical movement mechanism 21 is transmitted from a lifting drive shaft 213 provided on the rear side of the fuselage with respect to the rotation shaft of the non-circular cam 211. An eccentric lifting cam 214 is mounted on the lifting drive shaft 213, and a lifting crank 215 for vertically rotating the upper link arm 21a is provided between the lifting cam 214 and the left and right sides of the upper link arm 21a. The lower link arm 21b rotates up and down in conjunction with the up and down rotation of the upper link arm 21a, and the vertical movement mechanism 21 is a parallel link.

  The elevating crank 215 has one end mounted on a rotating shaft extending from the elevating cam 214 to the outside of the machine body, and the other end mounted on a connecting plate 216 provided inside the machine body of the upper link arm 21a, and the locus of the planting hoppers 20a and 20b. Is suitable for planting seedlings and receiving seedlings from the seedling supply device 43.

  The connecting plate 216 is protruded downward from the upper link arm 21a toward the lower part of the fuselage, and the lower end thereof is located slightly above the upper end or upper end of the lower link arm 21b. The other end of the elevating crank 215 is mounted near the section.

  With the above configuration, the lifting crank 215 can be disposed closer to the lower part of the fuselage, so that the center of gravity is closer to the lower part of the fuselage. Stabilize.

  Further, by mounting the other end of the lifting crank 215 to the connection plate 216, the upper link arm 21a is configured not to receive a load directly from the lifting crank 215, so that the durability of the upper link arm 21a is improved. .

  As described above, since the load applied by the elevating operation is small, the upper and lower link arms 21a and 21b may be formed of hollow square pipes. When the upper and lower link arms 21a and 21b are lightweight, the load transmitted to the transmission case 26 through the lifting crank 215 and the lifting cam 214 is reduced, and the durability of the transmission case 26 is also improved.

  In addition, the ascending speed does not become too slow and the descending speed does not become too fast due to the weight, so that the climbing trajectory of the planting hoppers 20a and 20b is stabilized, and the planting posture and planting depth of the seedlings are stabilized. Growth is good.

  Furthermore, since the lifting cam 214, the lifting crank 215, and the connection plate 216 are arranged between the transmission case 26 and the left and right movement mechanism 21, the upper and lower link arms 21a and 21b do not interfere with each other when rotating vertically. Both the upper and lower link arms 21a and 21b can be linear, and the configuration can be simplified and the strength can be maintained.

  Note that the upper link arm 21a and the lower link arm 21b have different front and rear lengths so that the raising and lowering and the forward and backward tilting of the planting hoppers 20a and 20b are more suitable for planting seedlings. In this case, the upper link arm 21a is shorter than the lower link arm 21b.

  The rear ends of the upper and lower link arms 21a and 21b are mounted between the left and right link holders 210 and 210 with a vertical space therebetween as described above. At this time, the mounting position of the upper link arm 21a is set to the lower side. The link arm 21b is located on the front side of the fuselage with respect to the mounting position.

  As a result, when the planting hoppers 20a, 20b rise to the vicinity of the top dead center, the distance between the fulcrums on the rear end side of the upper and lower link arms 21a, 21b increases, and the amount of forward and backward swing of the planting hoppers 20a, 20b is increased. Is reduced, the amount of front and rear positions above the planting hoppers 20a and 20b is unlikely to change near the drop supply position of the seedling supply device 43, and it is less likely that the seedling is not received.

  Further, when the planting hoppers 20a and 20b rise to the vicinity of the bottom dead center, the distance between the fulcrums on the rear end side of the upper and lower link arms 21a and 21b becomes shorter, and the amount of forward and backward swing of the planting hoppers 20a and 20b becomes smaller. Since the planting hoppers become larger, the planting hoppers 20a and 20b can be changed from the backward inclined posture to the forward inclined posture, and the planting hoppers 20a and 20b are prevented from contacting the seedlings and falling or being damaged.

  At the front end of the lower link arm 21b, an opening / closing wire 220 for operating an opening / closing mechanism for opening / closing the planting hoppers 20a and 20b in accordance with the elevating position is attached to the upper end side. Attach to A contact roller 219 is provided at the upper rear side of the opening / closing arm 218 so as to come into contact with a portion where the diameter of the non-circular cam 211 is equal to or larger than a predetermined value.

  When the non-circular cam 211 comes into contact, the opening / closing arm 218 rotates forward and pulls the opening / closing wire 220, thereby closing the planting hoppers 20a and 20b. When the non-circular cam 211 stops contacting, the opening / closing arm 218 turns backward. The planting hoppers 20a and 20b are opened when the opening and closing wire 220 is loosened by the movement.

  Note that the planting hoppers 20a and 20b open while the seedlings are being planted and begin to rise during the descent, and closed when the seedlings are planted and begin to rise and then receive the seedlings and then descend again. The shape of the non-circular cam 211 is corresponding.

  On the rear side of the left and right hopper holders 210, 210, a notch 221 is formed in a U-shape that opens to the rear side of the fuselage. At the upper and lower portions of the notch 221, the structure of the hopper holder 210 is projected rearward of the fuselage.

  At the rear of the left and right hopper holders 210, there is provided a U-shaped gap adjusting plate 222 shown in FIGS. Left and right cut grooves 222b are formed in the upper and lower front projecting portions 222a of the strip adjusting plate 222 at substantially the same left and right intervals as the left and right hopper holders 210, 210, respectively. ... They are inserted and mounted in the hopper holders 210, 210, respectively. At this time, a quadrangular adjustment space 223 is formed between the notch 221 and the front and rear of the strip adjusting plate 222 in a side view.

  The center between left and right of the gap adjusting plate 222 is located behind the upper and lower link arms 21 a and 21 b constituting the vertical movement mechanism 21, and protrudes in substantially the same length in the left and right direction. On the wall surface, a slot adjusting slot 224 is formed in the left-right direction.

  A hopper holder 225 for supporting the planting hoppers 20a and 20b on the rear side of the machine body is provided at a rear portion of the gap adjusting plate 222. The hopper holder 225 is formed by bending the upper side into an L-shape to the front side of the fuselage to form a connection portion 225a. On both left and right sides, the planting hoppers 20a and 20b and the fastening members 209 such as bolts are projected to the rear side of the fuselage. The connecting portions 225b, 225b that are connected with each other are formed. A plurality of mounting holes (not shown) for fastening members 209 such as bolts are formed in the vertical wall surface below the connecting portion 225a and above the connecting portions 225b. The hopper holder 225 has an L-shaped connecting portion 225a in a side view along the upper side and the rear side of the strip adjusting plate 222, and the slot adjusting slot 224 and the mounting hole are located at the same vertical height. Installing. Thus, when the fastening member 209 is removed or loosened, the hopper holder 225 can slide in the left-right direction along the gap adjusting plate 222.

  When adjusting the left and right planting intervals of the left and right planting hoppers 20a and 20b, that is, the spacing, the fastening members 209 are removed or loosened as described above, and the hopper holder 225 is moved to any position within the left and right width of the spacing adjusting plate 222. And the attachment member 209 is attached or tightened.

  The fastening member 209 is inserted through a mounting hole of the hopper holder 225, and can be switched between a position fixed state and a gap adjustment state by screwing or extracting a nut provided on the adjustment space 223 side.

  In the above-described configuration, since the fastening member 209 enters the gap adjusting slot 224, the fastening member 209 serves as a stopper, so that the hopper holder 225 can be prevented from dropping from the left and right ends of the gap adjusting plate 222.

  In the present embodiment, which includes the left and right planting hoppers 20a, 20b, the left and right planting hoppers 20a, 20b can be arranged with the largest left-right spacing between the left and right planting hoppers 20a, 20b because the left and right planting adjusting plates 222, 222 can have a large left-right spacing. Even when the hopper holders 225 and 225 are narrowed, that is, when the respective hopper holders 225 and 225 are moved to the inner end portions of the strip adjusting plates 222 and 222, the left and right planting hoppers 20a and 20b do not interfere with each other. As a result, the interval can be set to be narrower, so that it is possible to cope with more various working conditions than before.

  In addition, since the strip adjusting plate 222 is provided at the rear of the vertical movement mechanism 21, the strip adjusting plate 222 can be prevented from hindering the lateral movement of the planting hoppers 20a and 20b. Spacing can be set in a wider range over the width, and it is possible to cope with various working conditions.

  The adjustment space 223 is formed between the front and rear of the link holders 210, 210 and the opening of the strip adjustment plate 222, so that the operator can be behind the left and right rear wheels 44, 44 and outside the body. Since the work of tightening and loosening the nut can be performed in the space portion, the work for adjusting the gap can be efficiently performed.

  If the thickness of the nut is not more than half of the front-rear width of the adjustment space portion 223, a work space for inserting a nut attaching / detaching tool into the left and right central portions of the gap adjusting plate 222, that is, behind the upper and lower link arms 21a and 21b. Therefore, a position where the planting hoppers 20a and 20b cannot be fixed does not occur within the left and right widths of the gap adjusting plate 222, and a necessary gap can be set.

  In the above-described strip adjusting mechanism, the left and right planting hoppers 20a and 20b are basically moved in symmetric directions. For example, when the spacing is 70 cm, the left and right planting hoppers 20a, 20b are moved to the left and right outer ends of the spacing adjusting plates 222, 222, respectively. The hoppers 20a, 20b are moved to the left and right inner ends of the gap adjusting plates 222, 222, respectively. Other strips are set by moving them to arbitrary positions within the left and right widths of the strip adjusting plates 222, 222, and the operator should visually understand how many cm the strips are set. An indicator may be provided on the gap adjusting plates 222, 222. The indicator is to be affixed with a printed seal, written on the gap adjustment plate 222, or engraved.

  However, depending on the type of crop and the field environment, more than two, for example, four, may be planted on a wide ridge. When one row is reciprocated once and four rows are planted, both the left and right planting hoppers 20a and 20b are moved to the left and right sides of the gap adjusting plates 222, 222 in order to offset the planting position to the left and right sides in the traveling direction of the ridge. It is possible to plant seedlings even if they are approached. Thereby, it is possible to cope with further various working conditions.

  The planting hoppers 20a and 20b cover the hopper cover 226 toward the rear side of the fuselage above the hopper holder 225, and form an open space by notching the upper surfaces on the left and right sides on the rear side of the fuselage. Left and right rotation support shafts 227 are respectively provided between the front and rear surfaces of the rear wall surface of the hopper holder 225 and the rear wall surface of the hopper cover 226, and the rotation support shafts 227 have rotation arms respectively. 228, 228 are rotatably mounted. Most of the left and right pivot arms 228, 228 project upward from the open space.

  The left and right rotation support shafts 227, 227 are arranged below the notch 221 of the link holders 210, 210 and the gap adjusting plate 222 below the body.

  As a result, the rotation support shafts 227, 227 on the hopper holder 225 side can be arranged at the lower side of the gap adjusting plate 222 and without a large gap between the link holders 210, 210, so that the planting hoppers 20a, 20b The front-rear position does not move too far behind, and a compact configuration can be achieved.

  Of the rotating arms 228, 228, the cable outer of the opening / closing wire 220 is attached to the outside of the body, the cable inner is connected to the inside of the body, and the left and right rotating arms 228, 228 are pulled by the pulling and loosening of the opening / closing wire 220. 228 rotates.

  Further, U-shaped open / close arms 230, 230 for mounting a pair of left and right hop stays 229, 229 on the lower side are mounted on the left and right rotation support shafts 227, 227, respectively, so as to be able to rotate left and right. The open / close arms 230, 230 have a shape that covers the front and rear of the hop-stays 229, 229, and the upper side of the side surfaces. As shown in FIG. Gear portions 230a, 230a are respectively formed. The meshing of the gears 230a, 230a synchronizes the amount of rotation of the open / close arms 230, 230 when opening / closing, so that the seedlings can be opened evenly from the planting hoppers 20a, 20b.

  Support pins 232 and 232 are provided on the left and right sides of the front and rear surfaces of the open / close arms 230 and 230, respectively, and the left and right open / close arms 230 and 230 come close to each other on the left and right support pins 232 and 232, respectively. The springs 233 for urging in the directions are arranged in front and rear, respectively.

  The hopper stays 229, 229 have front and rear upwardly bent portions connected to the front and rear portions of the opening / closing arms 230, 230. To form a semi-circular cutout (not shown). The left and right hopper components 231 and 231 are configured to open greatly in the left-right direction toward the lower end portion when opened, and to have substantially equal end surfaces contacting vertically when closed. Also, the vicinity of the lower ends of the hopper components 231 and 231 are formed in a plate shape so as to reduce the resistance when entering the soil.

  Further, the hopper cover 226 is formed with an opening (not shown) having a diameter substantially the same as or slightly smaller than the uppermost parts of the left and right hopper components 231 and 231, and is supplied from the seedling supply device 43 to this opening. The seedling guides 234 for inserting the seedlings to be introduced into the left and right hopper components 231 and 231 are inserted and attached. Note that the diameter of the left and right hopper components 231 and 231 near the upper end is larger than the diameter from the vicinity of the upper end to the lower side.

  Of the seedling guide 234, the lower side of the hopper cover 226 has substantially the same diameter, and the upper side of the hopper cover 226 has a larger diameter toward the upper side of the fuselage, and has a tapered shape in side and rear views.

  Since the upper end of the seedling guide 234 has a tapered shape, the diameter of the upper end is maximized, so that the seedling can be received even if the position where the seedling is dropped and supplied is slightly shifted, so that the planting hoppers 20a and 20b can move the seedling. Is prevented from failing to plant.

  In addition, the diameter of the lower part of the seedling guide 234 is substantially the same as or slightly smaller than the diameter of the upper end of the hopper members 231 and 231, so that the seedling guide 234 and the hopper members 231 and 231 have a smaller diameter. Since there is no gap, the seedlings can be surely taken over, and the seedlings can be planted reliably.

  In addition, as shown in FIG. 11, the seedling guide 234 may have a shape in which a part of the upper side is formed such that the vertical height decreases toward the rear side of the machine body in a side view.

  With this configuration, when the planting hoppers 20a and 20b are inclined forward near the top dead center, the opening area at the upper end of the seedling guide 234 can be made larger. > Easy seedlings are easy to enter, and seedlings can be planted more reliably.

  Each seedling container 22 has a tubular body that opens vertically and a bottom lid that opens and closes the lower opening of the tubular body, and is connected to each other in a loop.

  The moving mechanism 23 moves the connected seedling containers 22 along an oval loop-like trajectory that is long in the left and right directions in a plane view of the machine body in a state where each connected seedling container 22 passes near the upper part of the left and right planting hoppers 20a and 20b. The container 22 is rotated counterclockwise.

  The seedling dropping mechanism opens the bottom cover of the seedling container 22 at a position above the planting hoppers 20a and 20b corresponding to the seedling container 22.

  In the present embodiment, a cylindrical outer peripheral portion is formed on the outer periphery of the seedling container 22, and an engaging portion (round hole) that is rotatably connected from the outside is provided on the outer peripheral portion of the cylinder to provide two seedling containers 22. Were connected to form a plurality of linked bodies. Then, the engaging portion of the connection body is rotatably connected to the cylindrical outer peripheral portion of the seedling container 22, and the adjacent seedling container 22 is rotatably connected to the cylindrical outer peripheral portion as a rotation axis. The plurality of seedling containers 22 are connected to each other. That is, the structure is such that the seedling container 22 and the connector are connected like an endless chain.

  Thus, the interval between the seedling container 22 and the adjacent seedling container 22 does not change in the linear portion 28 that moves linearly or in the arc portion 29 that moves in an arc shape. At the point where the seedlings are supplied to the planting hoppers 20a and 20b, the displacement of the seedling container 22 with respect to the left and right planting hoppers 20a and 20b is less likely to occur, and the seedlings are properly supplied and the seedlings are properly supplied. Can be planted.

  The moving mechanism 23 of the seedling supply device 43 winds the seedling storage bodies 22 connected to each other like an endless chain around an arc-shaped notch on the outer periphery of the sprocket provided on the left and right, and takes out the left and right sprockets from the transmission case 26. By driving and rotating with the applied power, each seedling container 22 is rotated around.

  The orbital movement path around which the seedling container 22 orbits includes a linear portion 28 extending in the left-right direction in plan view, and an arc-shaped portion 29 that is bent forward or rearward from the linear portion 28 by a sprocket. It has a circular shape and is arranged inside the fuselage from the left and right rear wheels 44.

  Although the seedling container 22 of the seedling supply device 43 relatively stably moves in the predetermined direction in the linear portion 28, the interval between the seedling containers 22 narrows or widens in the arc-shaped portions 29 on both left and right sides. In some cases, the drive of the seedling supply device 43 may be damaged by applying a load to the drive, or the falling supply timing of the seedlings may become unstable. In order to prevent this, at the inner peripheral edges of the plurality of seedling containers 22 and at the left and right outer sides of the seedling supply device 43, star wheels 240, 240 that are driven and rotated are provided, respectively. Projections are formed at equal intervals on the outer peripheral edge of 240. By inserting these projections into the space of the seedling container 22, the position of each seedling container 22 when passing through the arc-shaped portions 29 on both the left and right sides of the seedling supply device 43 is maintained. And the shift of the falling supply timing of the seedlings is prevented.

  However, during the planting operation of the seedlings, the protrusions of the star wheel 240 are constantly in contact with the seedling container 22, so that the shapes of the protrusions change due to abrasion, and the protrusions tend to be easily damaged by accumulation of load. If the deformed or damaged star wheel 240 is used as it is, the conveyance interval of the seedling container 22 becomes unstable, and the planting operation may be hindered, for example, the timing of seedling drop supply may be disturbed.

  In order to solve this problem, as shown in FIGS. 12 and 13, a rotation support shaft 241 protruding downward is provided on the projection of the star wheel 240, and a feed roller 242 can be rotated on the outer periphery of the rotation support shaft 241. Attach to

  As a result, the protrusion of the star wheel 240 does not come into direct contact with the seedling container 22, so that deformation of the protrusion and accumulation of load are less likely to occur, and the timing of drop supply of the seedling is stabilized.

  Further, since the feed roller 242 that is in contact with the seedling container 22 is made rotatable, wear of the feed roller 242 is reduced, and an increase in the frequency of component replacement is prevented.

  In addition, by covering or coating the outer peripheral surface of the feed roller 242 with a coating member having a high coefficient of friction and elasticity such as rubber, the wear of the feed roller 242 can be further reduced, and the frictional force reduces the grip force. As a result, the transportation of the seedling container 22 is stabilized.

  The seedling guide 234 is configured to stably drop and supply the seedlings from the seedling supply device 43 to the planting hoppers 20a and 20b by its shape. However, even if the planting hoppers 20a and 20b rise near the top dead center. Since a vertical interval is generated between the first drop supply position 31a and the second drop supply position 31b of the seedling supply device 43 and the seedling guide 234, the seedling enters the seedling guide 234 due to the influence of wind, vibration of the machine body, and the like. It is possible that a lack of stock may occur.

  In order to prevent this problem, as shown in FIGS. 14 (a) and 14 (b), a flexible and flexible manner is provided between the upper part of the seedling guide 234 and the first drop supply position 31a and the second drop supply position 31b. A bellows guide 244 formed of a high material is provided. The bellows guide 244 functions as a guide shooter for guiding the seedling by expanding and contracting and deforming in accordance with the elevation of the planting hoppers 20a and 20b by the vertical movement mechanism 21.

  As a result, no space is formed from the first drop supply position 31a and the second drop supply position 31b to the seedling guide 234, so that the seedlings are prevented from spilling under the influence of wind or vibration of the airframe, and the seedlings can be reliably planted. Can be attached.

  The left and right planting hoppers 20a and 20b are arranged on the rear side of the position of the rear wheel axle 12.

  The seedling supply device 43 is configured to supply the seedlings by the seedling container 22 moving around once around the left and right planting hoppers 20a and 20b.

  Seedlings are dropped and supplied from the seedling container 22 to the planting hoppers 20a and 20b at the first drop supply position 31a and the second drop supply position 31b, respectively.

  Then, a seedling container 22 for accommodating the seedlings to be dropped and supplied corresponding to the left and right planting hoppers 20a and 20b is provided separately, and the seedling container 22 is provided above the corresponding left and right planting hoppers 20a and 20b. The bottom lid is opened only when it comes, and the bottom lid is not opened above the corresponding left and right planting hoppers 20a, 20b.

  That is, only when the seedling container 22 corresponding to the planting hopper 20a has reached the first drop supply position 31a, and only when the seedling container 22 corresponding to the planting hopper 20b has reached the second drop supply position 31b. The seedling is supplied to the corresponding planting hoppers 20a and 20b by opening the bottom lid.

  The first drop supply position 31a and the second drop supply position 31b can be moved to corresponding positions when the gap between the left and right planting hoppers 20a, 20b is adjusted.

  The operation cycle of the moving mechanism 23 is set to be synchronized with the operation cycle of the vertical movement mechanism 21, and the seedling container 22 corresponding to the left and right planting hoppers 20a and 20b is combined as one seedling container unit. By using a configuration in which a plurality of the seedling container units are connected, the seedling container 22 supplies the seedlings corresponding to the left and right planting hoppers 20a and 20b while serially passing through the left and right drop supply positions 31a and 31b. The seedlings can be supplied without any leakage, and the left and right planting hoppers 20a and 20b are completely exhausted so that the seedling container 22 in which the seedlings are not supplied after passing through the left and right drop supply positions 31a and 31b does not occur. It is configured to supply seedlings correspondingly.

  The transplanting machine 10 according to the present embodiment includes a seedling planting site of the left and right planting hoppers 20a and 20b, which is used to reduce a soil cover pressure ring 37 used for crushing the soil according to the seedlings planted by the left and right planting hoppers 20a and 20b. Are provided in the vicinity of the rear left and right sides.

  Further, a worker seat 46 on which the worker sits is provided so that a worker who supplies the seedlings to the seedling supply device 43 gets on and performs the seedling supply operation. Specifically, an operator's seat 46 is disposed rearward at the center of the right and left sides of the machine, which is the front side of the seedling supply device 43. The worker sitting on the worker's seat 46 is seated in a rearward-facing posture toward the front side of the seedling supply device 43, and the front side of the seedling supply device 43, in particular, the front side in the orbital movement path of the seedling container 22. A seedling replenishment operation is performed corresponding to the linear portion 28.

  On the left and right sides of the operator's seat 46, a spare seedling frame 50 capable of storing seedlings to be supplied to the seedling supply device 43 is provided above the rear wheel axle 12 in the rear side of the rear wheel 44 when viewed from the side of the machine body.

  The left and right planting hoppers 20a and 20b are respectively raised and lowered by the up-and-down moving mechanism 21, and plant seedlings in a field at predetermined intervals in front and rear, that is, at predetermined intervals, as the traveling vehicle body 40 moves forward.

  Between the seedlings, a vehicle speed transmission that is set by operation of a shift lever 60 operably provided from above the traveling vehicle body 40 and a stock switching gear case 100 provided at the rear of the transmission case 39 are provided. And the second inter-gear gear mechanism 120 for switching between small shares can be changed.

  The switching between large strains by the first inter-gear gear mechanism 110 indicates, for example, an increase or decrease between the strains of 3 to 6 cm, and the switching between small strains by the second inter-gear mechanism 120 is, for example, 1 to 2 cm. Shows the change between stocks. However, the change between the shares to be switched fluctuates depending on the diameter of the gear used, and is not limited to the above figures.

  The switching mechanism between the above-mentioned stocks will be described in detail.

  A stock switching case 100 is mounted on the left rear portion of the transmission case 39. As shown in FIGS. 15 to 18, a driving force is input from the transmission case 39 to the inter-stock switching case 100 via the transmission shaft 101, and is located on the rear side of the transmission shaft 101, that is, inside the inter-stock transmission case 100. On the transmission side, a planting clutch 102 for switching on / off of the planting transmission is provided on the transmission shaft 101 so as to be switchable. A transmission gear 103 that rotates together with the transmission shaft 101 is mounted on the rear end side of the transmission shaft 101.

  The outer periphery of the transmission shaft 101 on the rear side of the machine body and the shaft attachment portions of the planting clutch 102 and the transmission gear 103 are each subjected to spline processing to suppress slippage.

  Note that the transmission shaft 101, the planting clutch 102, and the transmission gear 103 are arranged inside the body of the inter-stock transmission case 100 (on the left and right center of the body) and on the lower part of the body.

  The first inter-gear gear mechanism 110 is arranged outside the transmission shaft 101 and above the vehicle body. The first inter-stock gear mechanism 110 has a different diameter from the first inter-stock transmission shaft 111 and a first inter-stock input gear 112 provided on the rear side of the body of the first inter-stock transmission shaft 111 and meshing with the transmission gear 103. A first inter-stock output gear unit 113 composed of a plurality of (three in this example) gears, and a first inter-stock output gear unit that selects a gear that transmits a driving force among a plurality of gears constituting the first inter-stock output gear unit 113 It is composed of a shifter 114.

  The first inter-stock output gear unit 113 is arranged near the rear of the fuselage, and is arranged near the front of the fuselage, with the first inter-stock small-diameter gear 113a which is the smallest in diameter and selects the smallest stock among the first stocks. The first inter-stock large-diameter gear 113c that selects the largest inter-stock among the largest inter-first stocks, and is disposed between the front and rear of the first inter-stock small diameter gear 113a and the first inter-stock large diameter gear 113c. It is composed of the first stock middle diameter gear 113b.

  Further, the first inter-stock shifter 114 is disposed above the transmission shaft 101 and slidable in the longitudinal direction of the machine body, and a first switching mechanism provided on the front side of the body of the first shifter rod 115. The arm 116 and the first switching arm 116 slide in the front-rear direction of the first inter-stock transmission shaft 111 to form a first inter-stock small-diameter gear 113a, a first inter-stock medium-diameter gear 113b, and a first inter-stock large-diameter gear 113c. The first key 117 is used to select one that is transmitted in the lower transmission direction.

  As shown in FIG. 22A, a plurality of (in this example, three places) first shifter grooves 115a, 115b, and 115c are formed in the first shifter rod 115 on the rear side of the fuselage. A first sliding stopper 118 for preventing the first shifter rod 115 from sliding back and forth regardless of an operator's operation is brought into contact with any one of the 1 shifter grooves 115a, 115b and 115c, so that the seedlings between the seedlings change suddenly. To prevent

  As shown in FIG. 23, the first sliding stopper 118 includes a first stopper ball 118a that contacts the first shifter grooves 115a, 115b, and 115c, and the first stopper ball 118 is connected to the first shifter grooves 115a, 115b, and 115c. And a first stopper bolt 118c for receiving the first spring 118b.

  As shown in FIGS. 15 and 16, a large-diameter counter gear 131a meshing with the first inter-stock small-diameter gear 113a is provided above and inside the airframe of the first inter-stock transmission shaft 111 of the first inter-stock gear mechanism 110. A counter transmission shaft 130 having a counter gear unit 131, which is constituted by a medium diameter counter gear 131b meshing with the inter-stock medium diameter gear 113b and a small diameter counter gear 131c meshing with the first stock large diameter gear 113c, is rotatably provided. The counter transmission shaft 130 is transmitted to the lower side in the transmission direction via the gear of the counter gear unit 131 that meshes with the gear of the first inter-gear gear unit 113 whose transmission state is selected by the first key 117.

  The second inter-gear gear mechanism 120 is disposed above and outside the body of the counter transmission shaft 130 of the counter gear unit 131. The second inter-stock gear mechanism 120 includes a second inter-stock transmission shaft 121, a second inter-stock output gear unit 123 including a plurality of (three in this example) gears having different diameters, and a second inter-stock output gear unit 123. And a second inter-stock shifter 124 for selecting a gear for transmitting the driving force, and a first inter-stock output gear 122 provided on the rear side of the second inter-stock transmission shaft 121 with respect to the fuselage. The outer periphery of the second inter-shaft transmission shaft 121 on the rear side of the fuselage and the shaft-attached portion of the first inter-shaft output gear 122 are subjected to spline processing to suppress slippage and to be easily detachable from the second inter-shaft transmission shaft 121. Configuration.

  The second inter-stock output gear unit 123 meshes with the large-diameter counter gear 131a and has a second inter-stock small-diameter gear 123a that selects the smallest inter-stock between the second stocks and the small-diameter counter gear 131c. The second inter-segment large-diameter gear 123c that meshes with and selects the largest inter-strain between the second inter-strains, and is disposed between the front and rear of the second inter-strain small-diameter gear 123a and the second inter-strain large-diameter gear 123c. The second stock middle gear 123b is provided.

  The second inter-stock shifter 124 is disposed below the counter transmission shaft 130 and outside the fuselage, and is slidable in the longitudinal direction of the fuselage. A second shifter rod 125 is disposed on the front side of the fuselage. A second switching arm 126 provided, and the second switching arm 126 is slid in the front-rear direction of the second inter-stock transmission shaft 121 to form a second inter-stock small-diameter gear 123a, a second inter-medium diameter gear 123b, The large-diameter gear 123c is constituted by a second key 127 for selecting a gear that transmits to the lower side in the transmission direction.

  As shown in FIG. 22B, a plurality of (three in this example) second shifter grooves 125a, 125b, and 125c are formed in the second shifter rod 125 on the rear side of the fuselage. A second sliding stopper 128 for preventing the second shifter rod 125 from sliding back and forth regardless of an operator's operation is brought into contact with any of the two shifter grooves 125a, 125b, and 125c, so that the seedlings between the seedlings change suddenly. To prevent

  As shown in FIG. 23, the second sliding stopper 128 includes a second stopper ball 128a that comes into contact with the second shifter grooves 125a, 125b, and 125c, and the second stopper ball 128 is connected to the second shifter grooves 125a, 125b, and 125c. , And a second stopper bolt 128c for receiving the second spring 128b.

  As shown in FIGS. 15 and 16, a relay transmission shaft 140 is disposed above the second inter-stock transmission shaft 121 of the second inter-gear gear mechanism 120, and the A relay input gear 141 that meshes with the inter-stock output gear 122 and has a larger diameter than the first inter-stock output gear 122 is provided. A second inter-stock output gear 142 is mounted near the front and rear central portions of the relay transmission shaft 140 so as to be integrally rotatable.

  In addition, the outer periphery of the relay transmission shaft 140 on the rear side of the fuselage and the shaft attachment portion of the relay input gear 141 are subjected to spline processing to suppress slippage and to be easily detachable from the relay transmission shaft 140.

  The driving force is provided to the planting device 42 and the seedling supply device 43 that provide the driving force at the rear of the fuselage below the fuselage transmission shaft 140 and inside the fuselage, and above the second inter-train transmission shaft 121 and inside the fuselage. The planting output shaft 151 constituting the transmitting PTO shaft 150 is arranged. The PTO shaft 150 rotates the transmission shaft 152 in the up-down direction and the left-right direction around the planted output shaft 151, the transmission shaft 152 facing the rear of the machine body, and the planted output shaft 151 disposed in the inter-stock switching gear case 100. It comprises a universal joint 153 movably connected.

  A second inter-stock input gear 154 meshing with the second inter-stock output gear 142 and having a diameter larger than that of the second inter-stock output gear 142 is mounted near the front and rear central portion of the planting output shaft 151 so as to be integrally rotatable.

  The plurality of gear mechanisms and the plurality of transmission shafts are covered with a front case cover 100F and a rear case cover 100R that constitute the inter-stock transmission case 100, as shown in FIGS. A plurality of screw holes (not shown) are formed in the front case cover 100F and the rear case cover 100R, and bolts 160 are inserted into these screw holes from the front side and the rear side of the machine, respectively, to connect them. When the bolts 160 are removed, the connection between the front case cover 100F and the rear case cover 100R is released, and the internal maintenance work and the like can be performed.

  At the upper part of the front case cover 100F, at a position closer to the inside of the fuselage than the position where the relay transmission shaft 140 is disposed, an opening (not shown) for injecting a lubricant such as oil or grease into the inter-stock transmission case 100. (Omitted), and the oil cap 161 is detachably disposed in the opening.

  On the rear side of the rear case cover 100R, the side between the second inter-stock transmission shaft 121 and the relay transmission shaft 140, that is, the side where spline processing is performed and the first inter-stock output gear 122 and the relay input gear 141 are provided. As shown in FIG. 21, a rear opening 100Ra is formed, and a coating plate 162 having substantially the same shape as the rear opening 100Ra and being larger than the rear opening 100Ra is formed in the rear opening 100Ra. As shown in FIG. 20, it is detachably mounted via a plurality of bolts 160.

  When the cover plate 162 is removed and the rear opening 100Ra is opened, the first inter-stock output gear 122 and the relay input gear 141 are exposed, and the rear side of the body along the second inter-stock transmission shaft 121 and the relay transmission shaft 140. To a state where it can be removed.

  Accordingly, maintenance work of the first inter-stock output gear 122 and the relay input gear 141 can be easily performed.

  Further, by changing the first inter-line output gear 122 and the relay input gear 141 to gears having different diameters, it is possible to change the setting between the planted plants of the seedlings. In addition, the setting change between the planted plants mentioned here is not a setting change between the plants during the planting work, but a proper setting between the planted plants according to the crops having different cultivation conditions other than the onion assumed in the present application. means.

  By replacing part of the gears, it is possible to cope with the planting work of another crop, so that it is not necessary to separately prepare a dedicated transplanter for another crop, and the cost of agricultural work is significantly reduced.

  As shown in FIGS. 15 to 21, the inter-stock transmission case 100 is provided with one inter-stock switching lever 170 for switching between the first inter-stock gear mechanism 110 and the second inter-stock gear mechanism 120. The inter-stock switching lever 170 has an upper side bent toward the front of the fuselage, and is provided with an operation grip 171 fitted on an upper end located above the upper bent portion 170a. Further, the lower side than the upper bent portion 170a has an inclined posture in which the lower side of the fuselage is located on the inner side of the fuselage, and a lower bent portion 170b is formed on the lower side of the fuselage. The inside of the body is inclined at a gentler angle than the outside of the body.

  A first lever arm 172 for switching the first inter-gear gear mechanism 110 by sliding the first shifter rod 115 back and forth is provided near the lower end of the inter-stock switching lever 170 (the inner end of the fuselage). It is mounted so as to be able to rotate back and forth together with the switching lever 170. At the lower part of the first lever arm 172, there is formed a switching recess 172a for sandwiching a first connection pin 119 provided on the rear side of the first shifter rod 115 in the body.

  Left and right holding plates 174 are mounted on the lower side and the rear side of the body of the covering plate 162 via bolts 160. The inside of the holding plate 174 is bent toward the rear of the body to form a holding bent portion. 174a is formed. A first shaft opening 175 through which the lower end of the inter-stock switching lever 170 passes and a recess 176 through which the first connection pin 119 passes are formed on the rear side of the fuselage with respect to the holding bent portion 174a. As a result, the inter-stock switching lever 170 is rotatably held in the front-rear rotation direction (first operation direction) X in a side view, as shown in FIGS. 15, 16, and 19.

  A second lever arm 177 having a bent portion 177a is connected to a rear end of the body of the second shifter rod 125 by a connecting bolt 173, and a stock switching lever is provided in front of the body with respect to the bent portion 177a in a side view. A second shaft opening 178 through which 170 passes is formed.

  A soft ring-shaped member (not shown) having elasticity such as rubber is provided on the inner peripheral portion of the first shaft opening 175 and the second shaft opening 178 so that the inter-stock switching lever 170 can rotate in the front-rear rotation direction X. At the time of the operation and the operation in the longitudinal swing direction Y, it is preferable that the fulcrum is twisted to enable the operation, and the first shifter rod 115 and the second shifter rod 125 can be sufficiently operated to move forward and backward.

  Since the second shifter rod 125 is connected to the second switching arm and the second lever arm 177, when the inter-stock switching lever 170 is operated in the forward / backward swing direction (second operating direction) Y, the second shifter rod 125 is moved forward / backward. It is configured to move.

  The length from one end where the operation grip 171 of the inter-stock switching lever 170 is provided to the other end which becomes a fulcrum at the time of the rotation operation in the front-rear rotation direction X is, for example, at least 15 cm or more. The length should be as long as possible in consideration of the difficulty of contact with the members and the feet of the worker.

  Accordingly, the amount of operation of the inter-stock switching lever 170 at the time of the rotation operation in the front-rear rotation direction X becomes large, so that an operator can easily recognize that the stock is largely switched, and is distinguished from the operation of switching between the stocks at a small width. This facilitates the operation and prevents the occurrence of erroneous operation.

  Further, since the rotation fulcrum of the inter-stock switching lever 170 in the front-rear rotation direction X is near the first shifter rod 115, the inter-stock switching lever 170 is operated in the front-rear swing direction Y to move the second shifter rod 125 back and forth. At this time, the first shifter rod 115 is moved back and forth, the first inter-gear gear mechanism 110 is switched, and the setting of a different inter-strain is prevented.

  The side on which the operation grip 171 of the inter-stock switching lever 170 is provided is one of the left and right sides of the traveling vehicle body 40 and is provided in a space below the operator's seat 46. Further, the shift lever 60 is disposed in the space below the operator's seat 46 and inside the fuselage with respect to the stock switching lever 170.

  The speed change lever 60 has a longitudinal direction in the longitudinal direction of the fuselage, and switches between “low speed”, “medium speed”, and “high speed” by being rotated left and right with the front end as a pivot point. Even if the shift lever 60 is operated in the most outward direction, the shift lever 60 and the stock switching lever 170 are arranged so as not to interfere with each other. This is regardless of the operating position of the inter-stock switching lever 170.

  Accordingly, the operator can perform the setting operation between the stocks on the same left and right sides of the traveling vehicle body 40, so that the frequency of movement during the stock changing operation is suppressed, and the working time and labor are reduced.

  It is assumed that the operation is “low speed” when the operation is performed inside the body, and “high speed” when the operation is performed outside the body.

  Next, a description will be given, based on Table 1, of a change between seedlings to be planted by switching the vehicle speed transmission and switching between the first inter-gear gear mechanism 110 and the second inter-gear gear mechanism 120. If a label similar to that shown in Table 1 is created and attached within a range that can be visually recognized by an operator who operates the inter-stock switching lever 170, the operation direction of the inter-stock switching lever 170 becomes wider or narrower between the stocks. It becomes easier to grasp.

First, as described above, the transmission lever 60 switches the traveling speed of the traveling vehicle body 40 to three stages of "low speed", "medium speed", and "high speed" by switching the transmission gear mechanism provided in the transmission case 39. is there. The higher the traveling speed, the longer the planting device 42 moves forward during one raising and lowering operation, so that the interval before and after planting seedlings in the field (between plants) is changed by setting the vehicle speed.

  Next, when the inter-stock switching lever 170 is operated in the front-rear rotation direction X, the first shifter rod 115 swings in the front-rear direction to change the front-rear position of the first key 117, and the counter transmission is performed from the first inter-stock transmission shaft 111. The gear of the first inter-stock output gear unit 113 that is transmitted to the shaft 130 is changed.

  A first inter-stock small-diameter gear 113a is provided on the rear side of the first inter-shaft transmission shaft 111 with the first inter-stock gear mechanism 110 to set the inter-stock interval to be the narrowest. On the front side of the airframe, a first inter-stock gear mechanism 110 is provided. By providing the first inter-stock large-diameter gear 113c for setting the largest inter-stock, the inter-stock switching lever 170 is rotated in the front rotation direction XF as shown in FIGS. Is greatly widened, and the inter-strain is greatly narrowed when the rotation operation is performed in the rear rotation direction XR.

  Depending on the setting of the vehicle speed, the above-mentioned large change between the stocks is switched every 3 cm at "low speed", every 3-5 cm at "medium speed", and every 5 cm or 6 cm at "high speed".

  Note that the vehicle speed is switched between 10 cm at the minimum and 17 cm at the maximum in the switching between the shares, and the switching between the shares is performed more significantly than the switching between the shares by the first inter-gear gear mechanism 110.

  Next, when the inter-stock switching lever 170 is operated in the forward / backward swinging direction Y, the second shifter rod 125 swings in the forward / backward direction to change the forward / backward position of the second key 127. The gear of the second inter-stock output gear unit 123 that receives the driving force on the shaft 121 is changed.

  On the rear side of the body of the second inter-shaft transmission shaft 121, there is provided a second inter-stock small-diameter gear 123a for setting the stock between the two stocks to be the narrowest. On the front side of the airframe, a second inter-stock gear mechanism 120 is provided. By providing the second inter-stock large-diameter gear 123c which sets the inter-stock most widely, as shown in FIG. 15, FIG. 16 and FIG. 19, when the inter-stock switching lever 170 is operated to swing in the front swing direction YF, the Becomes narrower, and when the rocking operation is performed in the rear-side rocking direction YR, the space between the lines becomes narrower.

  That is, both the first inter-gear gear mechanism 110 and the second inter-gear gear mechanism are configured to rotate or swing the inter-stock switching lever 170 to the front side of the machine when making the stocks wide, and to make the stocks narrow. In this case, the inter-stock switching lever 170 is rotated or swung to the rear side of the machine. By unifying the operation direction of the inter-stock switching lever 170 when the number of shares increases or decreases, it is easy to prevent a worker from mistakenly performing the operation of increasing or decreasing the number of shares.

  The small change between the stocks is switched about every 1 cm at "low speed" and every 1 cm or 2 cm at "medium speed" and "high speed", depending on the setting of the vehicle speed.

  The large-diameter counter gear 131a, the medium-diameter counter gear 131b, and the small-diameter counter gear 131c mounted on the counter transmission shaft 130 are a first inter-stock small-diameter gear 113a, a first inter-stock medium-diameter gear 113b, and a first inter-stock large-diameter gear. 113c, the second inter-small diameter gear 123a, the second inter-medium diameter gear 123b, and the second inter-large diameter gear 123c mesh with each other, but only the gears selected by the first key 117 and the second key 127 mesh and rotate. It is possible to transmit the driving force by driving, and the other gears not selected do not spin and do not affect the transmission of the driving force.

  In the above-described configuration, for example, when it is desired to set the inter-stock ratio to 37 cm, the shift lever 60 is operated to set the vehicle speed to “medium speed”, and the inter-stock switching lever 170 is operated to move the first inter-stock transmission shaft 111 to the counter transmission shaft 130. The transmission between the first transmission medium-diameter gear 113b and the medium-diameter counter gear 131b is performed by meshing, and the transmission from the counter transmission shaft 130 to the second inter-stock transmission shaft 121 is performed by the large-diameter counter gear 131a and the second transmission. It is set to be performed by meshing of the inter-stock small-diameter gear 123a.

  Further, for example, when it is desired to set the distance between the stocks to 60 cm, the shift lever 60 is operated to set the vehicle speed to “high speed”, and the stock switching lever 170 is operated to transmit the power from the first stock transmission shaft 111 to the counter transmission shaft 130. Is set by the engagement of the first inter-stock large-diameter gear 113c and the small-diameter counter gear 131a, and the transmission from the counter transmission shaft 130 to the second inter-stock transmission shaft 121 is performed by the small-diameter counter gear 131c and the second inter-large diameter gear 123c. It is set to be performed by meshing of.

  As described above, in the seedling transplanter of the present configuration, since the vehicle speed, the first inter-gear gear mechanism 110 and the second inter-gear gear mechanism 120 can each be switched to three stages, the plant can be switched between 27 stages, and the area and cultivation method can be changed. It is possible to respond flexibly even if it is necessary to change between the stocks due to the difference.

  Further, by operating one inter-stock switching lever 170 in different directions, the switching operation between the first inter-stock gear mechanism 110 and the second inter-stock gear mechanism 120 is made possible, thereby reducing the number of parts and reducing the weight of the machine. And simplification of the configuration.

  In particular, as compared with the case where the first inter-gear gear mechanism 110 and the second inter-gear gear mechanism 120 are operated by separate operating members, it is easier to prevent the setting between the stocks from being forgotten by the operation and being different from the worker's assumption. In addition, planting of seedlings between erroneous plants is prevented, and it is not necessary to repeat planting work.

  Further, the switching operation between the first inter-gear gear mechanism 110 and the second inter-gear gear mechanism 120 is performed in the front-rear rotation direction X and the front-rear swing direction Y, so that the operator can determine which one is switched by the operation during the operation. Since it is easy to grasp, it is possible to prevent the wrong stock from being set due to an erroneous operation.

  In addition to this, both the front rotation operation XF and the front swing operation YF of the inter-stock switching lever 170 widen the stock, and the rear rotation operation XR and the rear swing operation YR both narrow the stock, Since it is easy to grasp whether the number of shares is widened or narrowed, it is further prevented that an incorrect number of shares is set.

  As shown in FIGS. 17 and 18, when viewed from the front or the rear, the transmission shaft 101, the first inter-stock transmission shaft 111, the counter transmission shaft 130, the second inter-stock transmission shaft 121, the planting output shaft 151, and the relay transmission shaft. By arranging the 140 in a staggered manner in the vertical direction, the left and right width of the inter-stock switching gear case 100 can be configured to be narrow, so that the space to be disposed on one side of the transmission case 39 on the rear left and right sides of the machine is suppressed.

  Although the inter-stock switching gear case 100 is slightly longer in the up-down direction, the staggered arrangement in the up-down direction also reduces the up-down length, so that the arrangement space is further reduced.

  The spare seedling frame 50 is provided with a support stay 52 on an upper part of a seedling support column 51 protruding outside the body of the traveling vehicle body 40, and the support stay 52 is capable of switching between a rotating state and a non-rotating state. An arm 53 is provided, and a seedling frame 54, 54 in the vertical direction is arranged on the seedling mounting rotating arm 53 at an interval, and replenishing seedlings are accommodated on the same surface of the seedling frame 54, 54. One end of the mounting table 55 on which containers such as a seedling box and a seedling tray to be mounted are mounted.

  Although only one mounting table 55 may be provided in the vertical direction, a plurality of mounting tables 55 may be arranged at intervals in the vertical direction that does not hinder the taking out of the container. 1 to 4, three mounting tables 55 are provided in the vertical direction.

  The spare seedling frames 50 having the above-described configuration are provided on both the left and right sides of the traveling vehicle body 40, and the seedling-turning arm 53 is rotated on the support stay 52 according to the situation.

  For example, at the time of planting seedlings, the longitudinal direction of the mounting table 55 is oriented in the longitudinal direction of the machine, so that containers for seedlings can be taken out from the mounting table 55 or the empty containers can be easily returned, thereby improving work efficiency. Can be improved.

  In this position, the mounting table 55 is located on both the left and right sides of the traveling vehicle body 40, so that the worker can easily grasp the end of the portion where the traveling vehicle body 40 can be boarded, and the feet protrude from the traveling vehicle body 40, and the posture Is prevented from breaking down.

  When the operator gets on and off the traveling vehicle body 40, the seedling-loading rotation arm 53 is rotated by about 90 degrees.

  As a result, a space for getting in and out of the vehicle body 40 is formed on both the left and right sides.

  The operator can also get on and off from the front side of the body of the traveling vehicle body 40. However, by rotating the seedling mounting rotation arm 53, the seedling frame frames 54, 54 are located on the front side of the body, and the mounting table 55 is positioned behind the body. In this state, the operator can use the seedling frame frames 54 as handrails, so that the operator can smoothly get on and off the traveling vehicle body 40.

  Further, when loading or unloading containers for seedlings from the mounting table 55, since there is no member that prevents loading and unloading of containers from the rear side of the machine, work efficiency is improved.

  The attachment of the worker's seat 46 to the traveling vehicle body 40 has a U-shape in a front view or a rear view, and includes a seat frame 49 straddling a body cover 48 that covers an upper portion of the engine 41 and the like. Attach to the upper part of the part. The lower ends of the left and right sides of the seat frame 49 are frames of a sliding portion (not shown) for moving the left and right traveling transmission cases 38, 38 in the left / right direction to change the left / right distance between the left and right rear wheels 44, 44. Connect to

  Thereby, since the seat frame 49 also serves as a component of the slide portion, the strength of the slide portion is improved.

  When planting seedlings with the above-described transplanting machine, the worker needs to sit on the worker's seat 46 with his / her back in the traveling direction. Noticing the approach may be delayed. At this time, if the traveling is not stopped immediately, the aircraft will come into contact with obstacles and hinder the advance of the aircraft, and will stop at a position away from the ridge where the planting work was being performed, and make a turning or traveling to the beginning of the ridge. There is a problem that the distance becomes long.

  In order to prevent this problem, as shown in FIG. 26, a central step 400 on which a worker sitting on the worker's seat 46 puts his foot is arranged so as to be able to turn up and down around a turning fulcrum on the front side of the fuselage. Due to the urging force of the lifting spring 401 provided between the lower surface of the 400 and the upper and lower portions of the body frame 19, the rear side of the central step 400 is slightly raised when no worker is riding on the vehicle.

  Below the vicinity of the rear end of the central step 400, there is provided a boarding detection switch 402 that comes into contact when the rear end of the central step 400 rotates downward. The boarding detection switch 402 is turned on when the center step 400 is rotated downward and pressed after the engine is started, and detects the worker's boarding. Then, when the worker notices an obstacle or a ridge end, or when the operator descends from the fuselage and the rear end side of the central step 400 is lifted by the lifting spring 401, the ride detection switch 402 is turned off, and the engine is stopped. It is configured to stop on the spot.

  If the operator strongly steps on the center step 400 and the rear end portion turns excessively downward, the boarding detection switch 402 may be damaged by pressurization. Then, a stopper 403 for regulating the downward rotation of the central step 400 at a predetermined position is provided upright.

  With this, when the worker turns and notices that he is approaching an obstacle or a ridge end, he can stop running when he removes his foot from the center step 400. This prevents the seedling from being planted a plurality of times in the same place without being able to move forward, and preventing the vehicle from stopping at a position away from the end of the ridge and increasing the moving distance to the next work position.

  INDUSTRIAL APPLICABILITY The transplanting machine according to the present invention can set a wider interval between seedlings for seedlings than before, and can be applied to a transplanter or the like for planting seedlings at the same time, and has high industrial applicability.

20a Planting Hopper 20b Planting Hopper 21 Elevating Mechanism (Elevating Member)
21a Upper link arm (link arm)
21b Lower link arm (link arm)
26 Transmission case 40 Running vehicle body 43 Seedling supply device 209 Fastening member (connecting member)
210 Link holder 211 Non-circular cam (oscillating rotating body)
214 Rotating cam (rotating link member)
215 Lifting crank (lifting arm)
216 Connection plate 221 Notch portion 222 Strip adjustment plate (adjustment support plate)
222a Front projection (projection)
224 Adjustable slot between holes (long hole)
225 Hopper holder (planting holder)

Claims (6)

A seedling supply device (43) for supplying seedlings to the traveling vehicle body (40); a planting hopper (20a, 20b) for receiving seedlings from the seedling supply device (43) and planting the seedlings in a field; 20b) an implanting machine including an elevating member (21) for elevating and lowering
A rear side of the body of the elevating member (21) is rotatably provided on the link holder (210), and a notch (221) is formed on the rear side of the body of the link holder (210), and the notch (221) is formed in the notch (221). A connecting member (209) for connecting the planting hoppers (20a, 20b) to the link holder (210);
The transplanting machine characterized in that the connecting member (209) is switchable between a state in which the planting hoppers (20a, 20b) can be moved in the left-right direction and a state in which the left-right position is fixed. Upper and lower protrusions (222a) of a U-shaped adjustment support plate (222) are provided in contact with the notch (221) of the link holder (210) in a side view,
A long hole (224) in the left-right direction is formed in the adjustment support plate (222), and a planting holder (225) supporting the planting hopper (20a, 20b) is brought into contact with the adjustment support plate (222). 2. The transplanter according to claim 1, wherein the adjusting support plate (222) and the planting holder (225) are connected by a connecting member (209).   The transplanter according to claim 2, wherein the left and right central portions of the adjustment support plate (222) are located at the rear of the elevating member (21).   The elevating mechanism (21) is composed of upper and lower link arms (21a, 21b), and the upper link arm (21a) is mounted on the link holder (210) at the lower link arm (21b). 3. The transplanter according to claim 2, wherein a position of the transplanter is located on the front side of the fuselage with respect to a position where the link holder is mounted on the link holder. A transmission case (26) for driving the elevating member (21) up and down is provided, and a rotating link member (214) for vertically moving the elevating member (21) on the transmission case (26), and the elevating mechanism (21) ) Is provided with a swing rotating body (211) for swinging back and forth.
A front portion of the elevating mechanism (21) is provided at a position other than the center of rotation of the oscillating rotating body (211), and the elevating mechanism (21) is used when the planting hoppers (20a, 20b) move up from the bottom dead center. The transplanter according to any one of claims 1 to 4, wherein the planting hopper (20a, 20b) is configured to be moved forward from the rear side of the machine body to the front side. An elevating arm (215) for elevating the elevating mechanism (21) is provided on the transmission case (26), and a connecting plate (216) for connecting the elevating arm (215) is provided on the elevating mechanism (21);
The connecting position of the connecting plate (216) and the lifting arm (215) is configured to be connected below the body of the lifting mechanism (21), and the connecting plate (216) is connected to the lifting mechanism (21). The implanting machine according to claim 5, wherein the second implanter is also located inside the fuselage.