JP2015163057A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter capable of improving workability of replenishment work of seedlings to a seedling planting part without reducing working efficiency of fertilizing work.SOLUTION: A seedling transplanter comprises: a floor step 40 provided in a vehicle body 2; a rear step 47 disposed behind the floor step 40; a seedling planting part 60 for planting seedlings, which is disposed in the rear part of the vehicle body 2; fertilizer applicators 100 for supplying granular materials to a farm field, which are disposed on both sides of the rear step 47 in a lateral direction of a machine body; a fertilizer application transmission shaft 235 for supplying a driving force to the fertilizer applicators on both sides in the lateral direction of the machine body, which is disposed below the rear step 47; a fertilizer amount adjustment device 230 for adjusting an actuation amount of the fertilizer application transmission shaft 235 and adjusting a supply amount of the granular materials in the fertilizer applicators 100, which is disposed below the rear step 47.

Description

  The present invention relates to a seedling transplanter including a fertilizer application device.

  Some work vehicles such as a seedling transplanter used when planting seedlings or the like in a field include a fertilizer application device that supplies fertilizer to the field. For example, in Patent Document 1, a seedling planting unit is provided at the rear of a traveling vehicle body so as to be movable up and down, and a seedling provided with a fertilizer application device for supplying granular materials such as fertilizer to a field on a rear step of the rear part of the traveling vehicle body. A transplanter is disclosed. In this seedling transplanter, by providing a fertilizer device on the traveling vehicle body in this way, it is possible to supply the granular material while planting seedlings, so seedling planting work and fertilization work are separately performed There is no need to do so, and work efficiency can be improved.

JP 2013-42747 A

  However, when the fertilizer is provided in the left-right direction of the rear part of the traveling vehicle body, when the worker replenishes the seedling planting part, the rear step cannot be used as a work place. For this reason, when replenishing seedlings to the seedling planting part, the worker needs to replenish from a place away from the seedling planting part, which increases the labor of the worker required for the seedling replenishment work, There is a risk that the efficiency of the replenishment work will decrease.

  As a method for suppressing such a decrease in work efficiency at the time of replenishing seedlings, for example, a state in which the seedling planting part is raised when replenishing seedlings and the distance between the traveling vehicle body and the seedling planting part is shortened A method of replenishing seedlings can be considered. However, when raising the seedling planting part when replenishing seedlings in this way, if you forget to close the fertilizer cover when raising the seedling planting part, the seedling planting part will interfere with the lid of the fertilizer application equipment. As a result, there is a risk that the ascending speed is lowered, the work efficiency is lowered, or the resin lid is broken at the time of contact.

  In addition, when the fertilizer is provided in the left and right direction of the rear part of the traveling vehicle body, not only the operator who operates the traveling vehicle body but also the assistance to supply seedlings and granular materials when planting seedlings. When the worker waits on the traveling vehicle body, it is difficult for the auxiliary worker to wait at the rear step of the traveling vehicle body, and the standby position of the auxiliary worker is limited. As described above, it has been very difficult to ensure the work efficiency of the fertilization work without impairing the workability of the work of replenishing the seedlings to the seedling planting part.

  The present invention has been made in view of the above, and provides a seedling transplanting machine that can improve the workability of replenishment work of seedlings to a seedling planting part without reducing the work efficiency of fertilization work The purpose is to do.

  In order to solve the above-described problems and achieve the object, a seedling transplanter according to claim 1 of the present invention includes a boarding step (40) provided in a traveling vehicle body (2), and the boarding step (40). A rear step (47) disposed at the rear, a seedling planting portion (60) disposed at the rear of the traveling vehicle body (2) and for planting seedlings, and both sides of the rear step (47) in the lateral direction of the aircraft A granular material supply device (100) for supplying the granular material to the field and a driving force applied to the granular material supply device (100) on both sides in the left-right direction of the machine body, disposed below the rear step (47). The fertilizer transmission shaft (235) for supplying the fertilizer and the granule in the granule feeder (100) arranged below the rear step (47) and adjusting the operating amount of the fertilizer transmission shaft (235) Fertilizer control device (2 0) and, characterized in that it comprises a.

  Further, the invention according to claim 2 is the seedling transplanting machine according to claim 1, wherein the granular material supply device (100) is disposed on both sides of the rear step (47) in the horizontal direction of the machine body. A storage member (103) that stores the body, a feeding member (108) that is disposed below each of the storage members (103) in the left-right direction of the machine body, and that feeds the granular material by a set amount; Disposed below the feeding member (108) and connected to the guide member (115) for guiding the granular material to the field and the respective guide members (115) in the left-right direction of the machine body, conveying air for conveying the granular material Left and right ventilation members (116) that supply the guide member (115) to the guide member (115), and the ventilation members (116) disposed on both sides in the left-right direction of the fuselage are below the rear step (47), And said A wind-up device (not shown) that is connected by a relay member (117) disposed behind the fertilizer transmission shaft (235) and generates a conveying wind in the ventilation member (116) disposed on both sides in the left-right direction of the machine body. 118).

  According to a third aspect of the present invention, in the seedling transplanting machine according to the second aspect, the rear wheels (10) respectively disposed on the rear side of the traveling vehicle body (2) and on both sides in the lateral direction of the body. ), And the granular material supply device (100) is disposed on the outer side in the left-right direction of the body rather than the rear wheel (10) located on both sides in the left-right direction of the body.

  According to a fourth aspect of the present invention, in the seedling transplanting machine according to the third aspect, a rear wheel transmission member (23 for transmitting a driving force to the rear wheels (10) disposed on both sides in the lateral direction of the machine body. ), A first fertilization transmission mechanism (141) disposed on the rear wheel transmission member (23) and transmitting a driving force to the fertilization transmission shaft (235), and the fertilization transmission shaft (235) in the left-right direction of the machine body And a second fertilization transmission mechanism (142) for transmitting a driving force to the feeding members (108) on both sides in the left-right direction of the machine body.

  Further, the invention according to claim 5 is the seedling transplanting machine according to any one of claims 1 to 4, wherein an outer peripheral portion of the boarding step (40) is disposed on an outer surface of the boarding step (40). A seedling receiving projection (170) protruding upward is also provided, and the seedling receiving projection (170) is disposed from the center in the longitudinal direction of the machine body to the front side of the machine body, and the granular material on both sides of the machine body in the lateral direction. Between the supply device (100) and the seedling receiving protrusion (170), there is provided a boarding / interval portion (171) defined in the longitudinal direction of the machine body.

  The invention described in claim 6 is the seedling transplanter according to any one of claims 1 to 5, wherein the seedling transplanter is disposed on the front side of the body of the traveling vehicle body (2) on both sides in the left-right direction of the body. Front wheel (5), and a front wheel transmission mechanism that is provided on both sides of the vehicle case (28) provided in the traveling vehicle body (2) in the lateral direction of the vehicle body and supplies driving force to the front wheels (5) on both sides of the vehicle body in the lateral direction. (150) and a front-wheel final case (22) disposed on both sides in the left-right direction of the body and covering the front-wheel transmission mechanism (150), and disposed in the transmission case (28), and the left and right front wheels (5 ) And a differential mechanism (151) for switching the interlocking between the front wheel final case (22) and the front wheel final case (22) disposed on both sides in the left-right direction of the fuselage. Switch the operation of the (151) differential switching member and (152), characterized in that it comprises a.

  In addition, the invention according to claim 7 is the seedling transplanting machine according to claim 6, wherein in the mission case (28), a planting clutch that switches transmission of driving force to the seedling planting part (60). (160) is provided, and the planting clutch (160) is disposed above the front body of the front wheel transmission mechanism (150).

  The seedling transplanting machine according to claim 1, wherein the left and right granular material supply devices (100) are arranged on both the left and right sides of the rear step (47), and the fertilizer transmission shaft (235) and the fertilizer application amount adjusting device (230) are disposed in the rear portion. By arranging it below the step (47), the member that closes the front and back of the rear step (47) and the seedling planting part (60) is not arranged. Thereby, it is possible to approach the seedling planting part (60) from the rear step (47) and replenish seedlings while maintaining the fertilization performance. As a result, the workability of the replenishment work of the seedling to the seedling planting part (60) can be improved without reducing the work efficiency of the fertilization work. Moreover, since the seedling replenishment work can be performed in a stable posture, the labor of the operator can be reduced. Moreover, the weight balance of an airframe can be stabilized by arrange | positioning the heavy granular material supply apparatus (100) on the right and left sides of the back side of a traveling vehicle body (2). As a result, the advancing direction of the machine body can be prevented from shifting in the left-right direction, and operability and seedling planting accuracy can be improved.

  In addition to the effect of the invention of claim 1, the seedling transplanting machine according to claim 2 is provided with the storage members (103) on both the left and right sides of the rear step (47), so that the seedling transplanting machine is easily accessible from the rear step (47). A storage member (103) can be arrange | positioned and the efficiency of the supply operation | work of a granular material improves. Further, since the relay member (117) for connecting the left and right ventilation members (116) is provided below the rear step (47), the relay member (117) prevents the worker from moving on the rear step (47). Can be prevented. Thereby, while improving work efficiency, it can prevent that a relay member (117) is damaged by contact with a worker's foot.

  In addition to the effect of the invention of claim 2, the seedling transplanter according to claim 3 is provided with the left and right granular material supply devices (100) on the outer side of the left and right rear wheels (10). The vertical position of the body supply device (100) can be expanded within an adjustable range. Thereby, the vertical height of the left and right sides of the body can be kept low, and the space during storage can be reduced. In addition, since the storage member (103) can be expanded upward as the vertical position of the left and right granular material supply devices (100) is lowered, the amount of granular material that can be stored can be increased. Thereby, the frequency of the replenishment operation | work of a granular material can be reduced, and work efficiency can be improved.

  In addition to the effect of the invention of claim 3, the seedling transplanter according to claim 4 applies a driving force from the rear wheel transmission member (23) via the first fertilization transmission mechanism (141) to the fertilizer transmission shaft (235). Since the granular material supply device (100) can be driven using the driving force of the traveling system, it is not necessary to separately construct a transmission path to the granular material supply device (100). Thereby, the number of parts can be reduced and the cost can be reduced, and the maintainability by the simplification of the configuration can be improved.

  In addition to the effect of the invention according to any one of claims 1 to 4, the seedling transplanting machine according to claim 5 has the seedling placement protrusion (170) disposed on the outer periphery of the boarding step (40). (40) The seedling placed on the top can be prevented from falling out of the traveling vehicle body (2). As a result, the number of seedlings can be increased, and the frequency of replenishing seedlings is reduced, so that the work efficiency is improved. Moreover, since the boarding / alighting space | interval part (171) was provided between the right and left granular material supply apparatus (100) and the right and left seedling receiving protrusions (170), the operator can easily get on and off the traveling vehicle body (2). . Thereby, the work efficiency is improved and the labor of the worker can be reduced.

  In addition to the effect of the invention according to any one of claims 1 to 5, the seedling transplanting machine according to claim 6 has a differential switching member (152) for switching the operation of the differential mechanism (151). Since the front wheel final case (22) is located closer to the front wheel final case (22), the differential switching member (152) can be moved along the front wheel transmission mechanism (150) and removed by removing the front wheel final case (22). This facilitates replacement of the differential switching member (152) and improves maintainability.

  In the seedling transplanting machine according to claim 7, in addition to the effect of the invention of claim 6, since the planting clutch (160) is provided above the front body of the front wheel transmission mechanism (150), the planting clutch (160) An attachment position can be made into the position spaced apart upward from the field scene, and it can prevent that the mud which jumped up during work prevents the operation of the planting clutch (160). As a result, the planting clutch (160) does not become engaged, and it is possible to prevent the occurrence of a missing section where seedlings are not planted, and the operator does not need to plant seedlings to compensate for the missing section. Can do. In addition, the planting clutch (160) is not turned off, so that it is possible to prevent seedlings from being planted in unnecessary places and to suppress excessive consumption of seedlings. Furthermore, the planting clutch (160) can be prevented from being damaged by a load caused by mud adhering to the planting clutch (160), and durability can be improved.

FIG. 1 is a side view of a seedling transplanter according to an embodiment. FIG. 2 is a plan view of the seedling transplanter according to the embodiment. FIG. 3 is an explanatory diagram of the preliminary seedling frame shown in FIG. FIG. 4 is an AA arrow view of FIG. FIG. 5 is a BB arrow view of FIG. 6 is a DD arrow view of FIG. FIG. 7 is a view taken along the line EE in FIG. FIG. 8 is a view taken along the line CC in FIG. 9 is a cross-sectional view taken along line FF in FIG. FIG. 10 is a main part configuration diagram of the seedling transplanter according to the embodiment. FIG. 11 is an explanatory diagram of a drive system of the fertilizer application apparatus. FIG. 12 is an explanatory diagram of a transmission system for transmitting power to the wheels. FIG. 13 is a detailed view of a portion G in FIG. FIG. 14 is an explanatory diagram of a power transmission system of the planting clutch and the fertilization clutch. FIG. 15 is a schematic diagram of a floor step. FIG. 16 is a plan view of a pulley provided in the hydraulic continuously variable transmission. FIG. 17 is a plan view of a pulley without a rib. FIG. 18 is a side view of a rotary case included in the planting apparatus shown in FIG. 1. FIG. 19 is a view taken in the direction of arrows HH in FIG. 20 is a sectional view taken along line JJ in FIG. FIG. 21 is a detailed view of a column portion provided with a handle. FIG. 22 is a perspective view of a monitor panel, which is a modification of the seedling transplanter according to the embodiment.

  Hereinafter, an embodiment of a seedling transplanting machine according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

Embodiment
FIG. 1 is a side view of a seedling transplanter according to an embodiment. FIG. 2 is a plan view of the seedling transplanter according to the embodiment. In the following description, the front / rear / left / right direction reference defines the front / rear, left / right reference with respect to the traveling direction of the vehicle body as viewed from the cockpit. The seedling transplanter 1 according to this embodiment is configured as a so-called riding-type seedling transplanter 1 in which an operator gets on and performs planting work. A traveling vehicle body 2 of the seedling transplanter 1 has a front wheel 5 disposed in a pair of left and right and a rear wheel 10 disposed in a pair of left and right in the same manner. It is a driving car. Further, the front wheel 5 is located in front of the rear wheel 10 and is provided as a steering wheel. In addition, a seedling planting section 60 that can be moved up and down by a seedling planting section lifting mechanism 70 is provided at the rear of the traveling vehicle body 2. In addition, as shown in FIG. 8, the auxiliary | assistant wheel 10a is attached to the inner side of the rear-wheel 10 via the axle of the rear-wheel 10 so that attachment or detachment is possible. The auxiliary wheel 10a has substantially the same diameter as the rear wheel 10 and is configured to generate a propulsive force of the airframe by being brought into contact with the farm with the rear wheel 10. This prevents the vehicle from being unable to travel due to the resistance of the field.

  The traveling vehicle body 2 includes a main frame 3 disposed substantially at the center of the vehicle body, an engine 20 mounted on the main frame 3, and power generated by the engine 20 to drive wheels and a seedling planting unit 60. Power transmission device 25 for transmitting. That is, in this seedling transplanter 1 according to the present embodiment, the power of the engine 20 that is a power source is used not only to drive the traveling vehicle body 2 forward and backward, but also to drive the seedling planting unit 60. In addition, a heat engine such as a diesel engine or a gasoline engine is used.

  In addition, the engine 20 is disposed at a substantially central position in the left-right direction of the traveling vehicle body 2 and protruding upward from a floor step 40 that is a boarding step of the aircraft. The floor step 40 includes a main step 41 located in the center of the body in the left-right direction and side steps 42 located on both the left and right sides of the main step 41. The main step 41 is located above the side step 42. Is located. Further, the floor step 40 is provided between the front part of the traveling vehicle body 2 and the rear part of the engine 20, and is mounted on the main frame 3, and a part of the floor step 40 has a mesh shape. The mud on the shoes can be dropped on the field. In addition, on both sides of the floor step 40 in the left-right direction, a boarding / alighting step 45 for placing an operator's foot when getting on / off the floor step 40 is provided.

  Further, a rear step 47 that is a rear step that also serves as a fender of the rear wheel 10 is provided behind the floor step 40. The rear step 47 is disposed at a position higher than the floor step 40 and is disposed from the left and right sides of the engine 20 to the rear.

  A handrail 48 is disposed from the rear end portion of the rear step 47 to both side end portions. The handrail 48 is provided so as to protrude upward from the rear step 47. The handrail 48 includes a left and right side handrail 48a which is erected on both the left and right sides of the rear step 47 and which is grasped by a worker who gets on and off the side of the traveling vehicle body 2 by hand, and the left and right side handrails 48a. A rear handrail 48b connecting the upper parts is combined. The rear handrail 48b is disposed above the rear end portion of the rear step 47 and protrudes to the left and right sides of the left and right side handrails 48a.

  The engine 20 protrudes upward from the floor step 40 and the rear step 47, and an engine cover 21 that covers the engine 20 is disposed in a portion protruding from these steps. That is, the engine cover 21 covers the engine 20 in a state of protruding upward from the floor step 40 and the rear step 47.

  Further, the traveling vehicle body 2 is provided with a cockpit 55 at the top of the engine cover 21, and a steering unit 50 is disposed in front of the cockpit 55 and at the front center of the traveling vehicle body 2. Yes. The control unit 50 is disposed in a state of protruding upward from the floor surface of the floor step 40.

  Various operating devices, a fuel tank for engine fuel, and the like are disposed inside the control unit 50, and a front cover 51 that can be opened and closed is provided at the front of the control unit 50. Further, an operation lever and the like for operating the operation device, instruments, and a handle 52 are disposed on the upper portion of the control unit 50. The handle 52 is provided as a steering member that steers the traveling vehicle body 2 when the operator steers the front wheel 5, and can steer the front wheel 5 via an operation device or the like in the control unit 50. It has become. Further, the lever includes a shift lever that is a traveling operation member that operates forward and backward advancement and traveling speed of the traveling vehicle body 2, and an operation state of the seedling planting unit 60 includes at least a raised state by the seedling planting unit lifting mechanism 70. A planting elevating lever which is a planting operation member that can be switched with is disposed.

  FIG. 3 is an explanatory diagram of the preliminary seedling frame shown in FIG. FIG. 4 is an AA arrow view of FIG. Preliminary seedling frames 90 on which replenishment seedlings are placed are disposed on the left and right sides of the control unit 50 in the floor step 40, that is, on the front side of the machine body. The preliminary seedling frame 90 is provided at a position where the outer end portion does not protrude from the outer end portion of the floor step 40 of the airframe in the left-right direction, and is supported by a support shaft 91 protruding from the floor surface of the floor step 40. Has been. The support shaft 91 is connected to the preliminary seedling frame 90 in the vicinity of the center of the preliminary seedling frame 90 in the front-rear direction.

  In addition, the electricity used in each electrical device of the seedling transplanter 1 is stored in the lower part of the preliminary seedling frame 90 arranged in this way, behind the center of the preliminary seedling frame 90 in the front-rear direction. A battery 95 is provided. That is, the battery 95 is disposed on the rear side of the center position in the front-rear direction with reference to the center position in the front-rear direction of the support shaft 91 on the floor step 40.

  The power transmission device 25 is a hydraulic continuously variable transmission 26 serving as a main transmission for shifting the power generated by the engine 20, and a belt-type power that transmits power from the engine 20 to the hydraulic continuously variable transmission 26. And a transmission mechanism 27. Among these, the hydraulic continuously variable transmission 26 is configured as a hydrostatic continuously variable transmission called HST (Hydro Static Transmission). For this reason, the hydraulic continuously variable transmission 26 generates hydraulic pressure by a hydraulic pump driven by power from the engine 20, and converts the hydraulic pressure into mechanical force (rotational force) by a hydraulic motor and outputs it.

  The hydraulic continuously variable transmission 26 is disposed in front of the engine 20 and below the floor surface of the floor step 40. In the seedling transplanter 1 according to the first embodiment, the traveling vehicle body 2 is It is disposed in front of the engine 20 as viewed from above.

  The belt-type power transmission mechanism 27 includes a pulley attached to the output shaft of the engine 20, a pulley attached to the input shaft of the hydraulic continuously variable transmission 26, a belt wound around both pulleys, A tension pulley for adjusting the tension of the belt. Thereby, the belt type power transmission mechanism 27 can transmit the power generated by the engine 20 to the hydraulic continuously variable transmission 26 via the belt.

  Furthermore, the power transmission device 25 has a mission case 28 to which the output from the engine 20 is transmitted via a belt-type power transmission mechanism 27 and a hydraulic continuously variable transmission 26. The mission case 28 is attached to the front portion of the main frame 3. The transmission case 28 shifts the output from the engine 20 transmitted via the belt-type power transmission mechanism 27 and the hydraulic continuously variable transmission 26 with the auxiliary transmission in the transmission case 28, and The power can be output separately for the driving power to the rear wheel 10 and the driving power to the seedling planting unit 60.

  Among these, a part of the driving power can be transmitted to the front wheels 5 through the left and right front wheel final cases 22 (see FIG. 12), and the rest is transmitted through the left and right rear wheel gear cases 23 (see FIG. 12). Thus, transmission to the rear wheel 10 is possible. On the other hand, the driving power is transmitted to a planting clutch (not shown) provided at the rear portion of the traveling vehicle body 2, and is transmitted to the seedling planting unit 60 by a planting transmission shaft (not shown) when the planting clutch is engaged. Is done.

  The seedling planting part lifting mechanism 70 for raising and lowering the seedling planting part 60 provided at the rear part of the traveling vehicle body 2 has a lifting link device 71, and the seedling planting unit 60 uses the lifting link device 71. It is attached to the traveling vehicle body 2 via. The elevating link device 71 has two members extending substantially in the front-rear direction, and is positioned on the lower side of the upper link 73 and the upper link 73 that is an upper link member that is relatively located on the upper side. And a lower link 74 which is a lower link member. Each of the upper link 73 and the lower link 74 is provided in a pair of left and right.

  In the lifting link device 71, the upper link 73 and the lower link 74 are rotatably connected to a link base frame 75 that is a rear frame-type rear frame standing on the rear end of the main frame 3. The other end side of the link is rotatably connected to the seedling planting unit 60, so that the seedling planting unit 60 is connected to the traveling vehicle body 2 so as to be able to move up and down. That is, the link base frame 75 is arranged to extend in the vertical direction at the rear portion of the traveling vehicle body 2, and the upper link 73 and the lower link 74 extend from the link base frame 75 rearward. Yes. In the elevating / lowering link device 71, the upper link 73 and the lower link 74 are both connected to the link base frame 75 so that the front end side is rotatable.

  The seedling planting part lifting mechanism 70 has a hydraulic lifting cylinder 76 that expands and contracts by hydraulic pressure, and the seedling planting part 60 can be lifted and lowered by the expansion and contraction operation of the hydraulic lifting cylinder 76. The seedling planting part raising / lowering mechanism 70 can raise and lower the seedling planting part 60 to the non-working position or to the ground work position (ground planting position) by the raising / lowering operation.

  In addition, the seedling planting unit 60 can plant a range in which a seedling is planted in a plurality of sections or a plurality of rows. That is, the seedling planting unit 60 is configured to plant seedlings with a plurality of strips. The seedling planting unit 60 includes a planting device 61, a seedling placement table 65, and a float 81. Among these, the seedling placing stand 65 is configured to be able to place seedlings to be planted in a farm field. Specifically, the seedling placing table 65 has seedling placing surfaces 66 corresponding to the number of planting strips partitioned in the left-right direction of the traveling vehicle body 2, and a soiled mat-like seedling is placed on each seedling placing surface 66. It is possible to place. This eliminates the need to return the seedlings prepared outside the field every time the seedlings placed on the seedling placing table 65 are planted, and the continuous work can be performed, so that the work efficiency is improved.

  The planting device 61 is a device for planting seedlings placed on the seedling placing table 65 in a farm field. The planting device 61 is provided for every two strips, and includes two planting rods 62 for the two strips. The planting basket 62 is configured so that a seedling can be taken from the seedling mounting table 65 and planted for each strip. Moreover, the float 81 is arrange | positioned by the lower part of the seedling mounting stand 65, and it is provided so that it can level the ground by sliding on the field scene and leveling with the movement of the traveling vehicle body 2. FIG.

  The float 81 detects the depth of the field by a detection member (not shown) such as a potentiometer that detects the rotation angle while leveling the unevenness of the field at the center in the left-right direction of the body, and adjusts to the depth of the field. If the main float has the function of raising and lowering the seedling planting part 60 and the left and right side floats that slidably level the field where the seedling is planted on both the left and right sides of the main float, it can be adapted to the changes in the depth of the field. Therefore, it becomes possible to automatically adjust the seedling planting depth, and the seedling planting accuracy can be improved. In addition to this, the eight-row seedling transplanter shown in this case and the number of strips larger than that, for example, the ten-row seedling transplanter, are configured such that left and right subfloats are provided between the side float and the main float. If the configuration is such that the leveling of the farm scene is ensured without changing the shapes of the main float and the left and right side floats, it is possible to suppress an increase in the body cost due to the increase in size.

  The float 81 constitutes a planting depth adjusting device 80 that adjusts the planting depth of the seedling planted by the seedling planting unit 60. In other words, the float 81 has the planting depth adjusting device 80. doing. The planting depth adjusting device 80 can adjust the planting depth of the seedling by adjusting the vertical position of the seedling planting unit 60 with respect to the farm field. By adjusting the relative position with the seedling planting unit 60, the vertical position of the seedling planting unit 60 with respect to the field can be adjusted.

  In addition, on both the left and right sides of the seedling planting portion 60, there are provided drawing markers 85 that form a line that serves as a guide in the traveling direction on the next planting line. That is, the line drawing marker 85 draws a mark on the field when the seedling transplanter 1 moves straight forward in the field and then moves forward at the edge of the field. The drawing marker 85 is configured so that the left and right drawing markers 85 can be switched each time the traveling vehicle body 2 turns.

  Further, on both sides of the rear step 47 in the left-right direction of the machine body, a fertilizer application device 100 which is a granular material supply device for supplying granular material to the farm is arranged. Specifically, the fertilizer application device 100 is a granular fertilizer. Can be supplied to the field. Specifically, the fertilizer application device 100 disposed on both sides in the left-right direction of the machine body is specifically composed of a left-side fertilizer machine 101 located on the left side of the machine body of the rear step 47 and a right-side fertilizer machine located on the right side of the machine body of the rear step 47. 102. These left and right fertilizer application apparatuses 100 are disposed on the outer side in the left and right direction of the body rather than the rear wheels 10 located on both sides in the left and right direction of the body.

  FIG. 5 is a BB arrow view of FIG. 6 is a DD arrow view of FIG. FIG. 7 is a view taken along the line EE in FIG. FIG. 8 is a view taken along the line CC in FIG. As described above, the fertilizer application device 100 disposed on both sides in the left-right direction of the machine body includes a storage hopper 103 that is a storage member that stores granular fertilizer, a feeding roll 108 that is a feeding member that feeds the fertilizer by a set amount, A fertilizer hose 115 that is a guide member for guiding fertilizer to the field, and a ventilation duct 116 that is a left and right ventilation member that supplies conveyance air for transporting the fertilizer to the fertilizer hose 115 are provided. Among these, the storage hoppers 103 are disposed on both sides of the rear step 47 in the left-right direction of the machine body, and the feeding rolls 108 are disposed below the respective storage hoppers 103 in the left-right direction of the machine body. Further, the fertilization hose 115 is disposed below each feeding roll 108 in the left and right direction of the machine body, and the ventilation duct 116 is connected to each fertilization hose 115 in the left and right direction of the machine body.

  The ventilation ducts 116 disposed on both sides in the left-right direction of the machine body are connected by a relay duct 117 that is a relay member. The relay duct 117 is connected to the ventilation ducts 116 on both sides in the left-right direction of the body by extending in the left-right direction of the body, and the relay duct 117 is disposed below the rear step 47. Yes. A blower 118, which is a wind-up device for generating a conveying wind, is provided at the center in the left-right direction of the relay duct 117 and above the relay duct 117. The blower 118 may be arranged on either the left or right side of the left and right ventilation ducts 116, 116.

  The fertilizer device 100 on both sides in the left-right direction of the machine body is provided with left and right base frames 201 on both left and right outer sides of the rear step 47 and above the left and right side steps 42, and is viewed from above the left and right base frames 201. L-shaped left and right mounting frames 202 are provided. The base portions of the left and right base frames 201 are attached to the lower portions of the left and right sides of the rear step 47. Further, left and right fertilization frames 203 are vertically erected on the upper portions of the left and right placement frames 202, and left and right feeding cases 105 are respectively provided on the upper portions of the left and right fertilization frames 203.

  As shown in FIGS. 6 and 7, a plurality of the right and left feeding cases 105 are arranged side by side in the longitudinal direction of the body, and the total number of the plurality of feeding cases 105 arranged on the left and right sides of the traveling vehicle body 2. The number of seedlings should be the same as the number of seedlings. In particular, when the same number of feeding cases 105 are provided on the left and right, the weight balance in the left-right direction of the body is stabilized.

  9 is a cross-sectional view taken along line FF in FIG. As shown in FIG. 9, each of the feeding cases 105 includes a fixed case 106 that is fixed on the left and right fertilization frames 203 and a detachable case 107 that is detachable from the fixed case 106. A first inclined portion is formed on the upper surface of the fixed case 106 so that the outer side of the fuselage is upward from the inner side of the fuselage, and a second inclined portion having the same inclination angle as the first inclined portion of the fixed case 106 is formed on the lower surface of the detachable case 107. Form. Then, as shown in FIGS. 5 and 6, left and right storage hoppers 103 for storing fertilizer are placed on the left and right sides of the traveling vehicle body 2 above a plurality of feeding cases 105 provided in the longitudinal direction of the vehicle body, The left and right hopper lid portions 104 are rotatably mounted on the outer end portions of the left and right storage hoppers 103, respectively.

  In the lower part of the storage hopper 103, the same number of dropping ports 103 a for dropping the fertilizer stored in the plurality of feeding cases 105 are formed as the feeding case 105, and the plurality of dropping ports 103 a are provided on the detachable case 107 of the feeding case 105. It is the structure which contacts an upper surface. Further, the longitudinal direction of the storage hopper 103 is directed to the front-rear direction of the machine body.

  As described above, the storage hoppers 103 for storing the fertilizer are disposed on the left and right sides of the traveling vehicle body 2, so that there is no member blocking the rear portion of the traveling vehicle body 2 and the seedling planting portion 60, and the rear step 47 is operated. The operator can move, so the distance between the rear part of the traveling vehicle body 2 and the seedling placement table 65 of each row of the seedling planting part 60 can be narrowed, and the worker can take a comfortable posture when replenishing seedlings. It is easy to work with, improving work efficiency and reducing labor.

  Further, when the seedling replenishing operation is performed, even if the seedling planting portion 60 is raised with the hopper lid portion 104 of the storage hopper 103 opened, the seedling planting portion 60 is prevented from contacting the hopper lid portion 104. As a result, the seedling replenishing operation can be performed smoothly and the working efficiency is improved, and the hopper lid portion 104 is prevented from being damaged due to contact with the seedling planting portion 60.

  As shown in FIG. 5, the hopper lid portion 104 covers the upper side of the storage hopper 103 when the storage hopper 103 is opened in the direction of the inner side of the machine body and the upper side of the storage hopper 103 is opened. The above-described rotation operation toward the outside of the machine body is referred to as an opening operation, and the rotation operation toward the inside of the machine body is referred to as a closing operation. As described above, when the left and right hopper lids 104 are opened, the left and right hopper lids 104 are moved by the operator when the fertilizer is poured into the left and right storage hoppers 103 by rotating the outer hopper lids 104 in the outward direction. Since the operation can be prevented from being hindered, the work efficiency is improved.

  A lock member between the left and right storage hoppers 103 and the left and right hopper lids 104 is locked when the left and right hopper lids 104 are closed, and prevents the left and right hopper lids 104 from being opened during work. When (Patchon lock) R is provided, the left and right hopper lids 104 are opened during the operation, and the fertilizer jumps out to the outside, rainwater, water in the field, etc. enter the left and right storage hoppers 103, and the fertilizers stick to each other. Therefore, the consumption of fertilizer can be reduced. Further, the fertilizer becomes a lump and cannot enter a feeding groove 108a of a later-described feeding roll 108, and the supply amount of the fertilizer to the field is prevented from being different from the setting.

  As shown in FIG. 9, a feed shaft 109 is rotatably mounted in each fixed case 106 in the longitudinal direction of the machine body. The feed shaft 109 receives fertilizer dropped from each drop port 103 a of the storage hopper 103. A feeding roll 108 is provided for feeding a set amount of fertilizer downward at predetermined intervals.

  The feeding roll 108 is formed with a plurality of feeding grooves 108a for receiving fertilizer at predetermined intervals in the circumferential direction, for example, every 60 degrees. When the feeding roll 108a is located directly below the dropping port 103a, the feeding grooves 108a are formed as fertilizer. In response to the rotation of the feeding roll 108, the fertilizer stored in the feeding groove 108a is released when the feeding groove 108a receiving the fertilizer enters a phase facing the lower side of the machine body. The amount of fertilizer stored in one feeding groove 108 a and released at a predetermined position varies depending on the rotation speed of the feeding shaft 109.

  Further, in each detachable case 107, a pressure suppressing member 110 is provided that smoothes the fertilizer in the feeding groove 108a and covers the feeding groove 108a to prevent the fertilizer from being released from a phase before the discharge position. The pressure suppressing action surface of the pressure suppressing member 110 is arranged toward the outer peripheral edge of the feeding roll 108.

  When the pressure-reducing member 110 is a brush type made of synthetic resin or fiber, it is possible to prevent a strong resistance from being applied when contacting the outer peripheral surface of the feeding roll 108 or the fertilizer, so that the rotation speed of the feeding roll 108 is a resistance. It is delayed and the amount of fertilizer released is prevented from differing from the set amount, and the fertilizer collapses into a powder form due to resistance, and the powder is prevented from remaining in the feeding case 105 and the like. However, if the brush hair is too soft, the fertilizer trying to come out from the feeding groove 108a cannot be suppressed. Therefore, it is desirable that the brush hair is configured to be hard.

  Further, inside each detachable case 107 and inside the machine body, a drop shutter 111 that switches the passage of fertilizer dropped from the drop opening 103a of the storage hopper 103 is provided so as to be movable in the longitudinal direction of the machine body. When the dropping shutter 111 is moved toward the outside of the machine body to close the upper opening of the detachable case 107, the fertilizer stays in the storage hopper 103, particularly in the dropping port 103a. Accordingly, when the detachable case 107 is removed from the fixed case 106 in a state where the storage hopper 103 and the detachable case 107 are connected, the storage hopper 103 can be removed without spilling the fertilizer, so that the storage hopper 103 is removed during maintenance. Sometimes the remaining fertilizer is prevented from being scattered around.

  Further, whether fertilizer is fed to the feeding roll 108 inside each detachable case 107 and outside the machine body, or is dropped from the fall discharge port 112 provided in the vertical direction on the machine body outside the delivery case 105 and discharged. The switching shutter 121 is provided so as to be rotatable. When the rotation of the feeding roll 108 is stopped after the work is completed and the switching shutter 121 is rotated to the outside of the machine body, the fertilizer stored in the storage hopper 103 follows the discharge inclined portion 113 formed on the outside of the machine body of the fixed case 106. It moves to the outside of the machine body and falls downward from the fall discharge port 112 to be discharged. A collection container such as a bucket is installed below the fall discharge port 112 to collect the discharged fertilizer.

  As shown in FIGS. 6 and 9, a discharge lid 114 is detachably provided at the lower end of each drop discharge port 112, and the fertilizer is discharged from the drop discharge port 112 when the discharge lid 114 is removed. Then, since the amount of discharged fertilizer is reduced, the labor required for collecting the discharged fertilizer is reduced.

  When the discharge lid 114 is made of an elastic member such as rubber, the discharge lid 114 can be attached when it is pushed into the lower end of the drop discharge port 112, and the discharge lid 114 can be detached when pulled. As a result, work efficiency is improved.

  As shown in FIGS. 5 to 7, left and right ventilation ducts 116 that convey the discharged fertilizer are attached to the lower side of each feeding roll 108 in the longitudinal direction of the machine body. A plurality of openings are formed in the left and right ventilation ducts 116 in the front-rear direction, and the lower ends of the fixed cases 106 of the feeding cases 105 are brought into contact with the openings. The left and right ventilation ducts 116 are arranged at positions closer to the traveling vehicle body 2 than the left and right feeding cases 105.

  And the fertilizer hose 115 which guides a fertilizer to the vicinity of the planting position of the seedling of the some planting rod 62 is arrange | positioned by the same number as an opening part below the body outer side of each opening part, and the left and right ventilation ducts 116. The fertilizer guide end portions of the plurality of fertilization hoses 115 are respectively disposed at the rear portions of the wide portions on the front side of the floats 81. Specifically, the left and right main floats having left and right wide portions projecting in the left and right direction face the fertilizer guide end of the fertilizer hose 115 on the rear side of the left and right wide portions, and wide on one side in the outer direction of the machine body. The left and right sub-floats having portions face the fertilizer guide end portions of the fertilizer hose 115 on the rear side of each one-side protruding portion.

  A relay duct 117 that connects the left and right ventilation ducts 116 is disposed in the left-right direction of the body, behind the traveling vehicle body 2, specifically behind and below the rear step 47. Further, a blower 118 for generating fertilizer conveying air is attached at the center in the left-right direction of the relay duct 117 and above the relay duct 117 (see FIGS. 1 and 2).

  The blower 118 rotates a wind fan (not shown) provided in the wind fan unit 119 by a blower motor 118a provided in the cover 118b, and air taken from a slit formed in the cover 118b is conveyed to the wind. It is what. The wind-up fan unit 119 has a larger diameter than that of the cover 118b in which the blower motor 118a is installed by installing the wind-up fan. The blower motor 118a and the cover 118b are arranged within the diameter of the wind-up fan unit 119. To do.

  A blower switch 120 for turning on / off the drive of the blower motor 118a is provided inside the body of the storage hopper 103 on the right side of the body. The blower switch 120 is used to stop both the left fertilizer application device 101 and the right fertilizer application device 102 during the operation of not supplying fertilizer simultaneously with planting of seedlings or during the operation of stopping the supply of fertilizer only to a part of the field. By turning off the power, excessive power consumption can be suppressed.

  With the above configuration, the conveying air generated by the blower 118 enters the ventilation ducts 116 and 116 on the left and right sides of the aircraft from the relay duct 117, and fertilizer such as fertilizer dropped from the storage hoppers 103 and 103 on the left and right sides of the aircraft. Since it can guide to each fertilization hose 115,115 on both the left and right sides, it is possible to generate a conveying wind that guides the fertilizer dropped from the left and right storage hoppers 103 to each fertilization hose 115 on both the left and right sides with one blower 118. The number of parts can be reduced and the weight of the aircraft can be reduced.

  In addition, since the relay duct 117 is disposed behind and behind the traveling vehicle body 2, when the worker performs seedling replenishment work or the like on the rear step 47, the relay duct 117 increases the range of movement of the worker. There is no limit and work efficiency is improved.

  Further, since the left and right ventilation ducts 116 are arranged closer to the traveling vehicle body 2 than the left and right feeding cases 105, one side end portions of the left and right fertilization hoses 115 can be attached only to the outside of the machine body. 115 is not located on the floor step 40 and the rear step 47, and it becomes easier for the operator to move on the traveling vehicle body 2 and the work efficiency is improved.

  And by providing the blower 118, which is a heavy object, on the right side of the machine body and on the rear side, the balance of the weight balance due to the battery 95, which is a heavy object provided on the left side of the machine body and below the front spare seedling frame 90, is reduced. Since they can be offset, the weight balance of the airframe is stabilized, and traveling and operability are improved.

  In addition, the blower 118 arranges the rotating shaft (not shown) of the wind-up fan in the left-right direction of the machine body, and the direction in which the conveying wind is generated is the left-right direction of the machine body. At this time, the blower motor 118a and the cover 118b are provided on the inner side of the wind-up fan unit 119, and the front-side end of the ventilation duct 116 is connected to the outer side of the wind-up fan unit 119. As a result, the blower motor 118a and the cover 118b formed with a slit into which air enters face the inner side of the machine body, and the wind fan section 119 is located on the outer side of the machine body, so that mud and water scattered as the traveling vehicle body 2 travels. Since adhesion can be prevented, damage to the blower 118 is prevented, and the time required for maintenance work of the blower 118 is shortened.

  FIG. 10 is a main part configuration diagram of the seedling transplanter according to the embodiment. As shown in FIG. 10, the presence or absence of fertilizer is determined from the energization resistance value at the lower inner sides of the left and right storage hoppers 103, and when the contact with the fertilizer is interrupted, the remaining amount of fertilizer is small or the fertilizer has run out. A remaining amount sensor 221 for detecting this is provided. The remaining amount sensor 221 is provided directly above the left and right feeding cases 105 to provide the same number of left and right feeding cases 105 as the number of the left and right feeding cases 105. ) Can be detected. If at least one of the remaining amount sensors 221 detects that the fertilizer has run out (or shortage), information indicating that the fertilizer has run out (or shortage) is displayed on the display panel provided at the top of the control unit 50.

  However, only the display of information on the display panel can be understood only that fertilizer for fertilization is insufficient. In particular, since the left and right storage hoppers 103 are provided on the left and right sides of the rear portion of the traveling vehicle body 2 in this configuration, if the location of the portion where the fertilizer is insufficient is not known, extra work time is required for replenishing the fertilizer. You will spend a lot of work.

  In order to prevent the occurrence of this problem, as shown in FIG. 7, a fertilizer shortage display panel 222 provided with a plurality of display lamps 223 is attached to either one of the left and right storage hoppers 103. The plurality of display lamps 223 of the fertilizer outage display panel 222 are connected to the plurality of remaining amount sensors 221 by harnesses (not shown), respectively, and when the remaining amount sensor 221 detects that the fertilizer is out (or insufficient), the corresponding display lamps 223 are displayed. Is configured to light up. The signal transmitted by the remaining amount sensor 221 is received by the control device U and transmitted to the display lamp 223.

  Note that the fertilizer shortage display panel 222 may be provided on the rear handrail 48b instead of the above arrangement. When the auxiliary worker waits at the rear step 47 and there are two or more passengers on the traveling vehicle body 2, the auxiliary worker can monitor the fertilizer shortage display panel 222 at the standby position. (Or shortage) can be immediately known, and the occurrence of seedling growth failure due to lack of fertilizer supplied to the field is prevented.

  With the above configuration, the operator can visually check the fertilizer shortage display panel 222 and can grasp the portion where the fertilizer is insufficient from the lit display lamp 223, so that the operator can quickly move to the fertilizer replenishment work position. It is possible to improve work efficiency and reduce labor.

  Next, transmission of the driving force of the left fertilizer 101 and the right fertilizer 102 will be described. FIG. 11 is an explanatory diagram of a drive system of the fertilizer application apparatus. As shown in FIG. 11, on either the left or right side of the left and right rear wheel gear case 23, there is provided a base portion of an output cam that rotates up and down by obtaining a driving force from a fertilization output shaft 23 f of the rear wheel gear case 23. A lower base portion of the first fertilization transmission rod 225 is provided at the rear end portion of the first fertilization transmission rod 225, and a base portion of the swing connection plate 226 is provided at the upper end portion of the first fertilization transmission rod 225. The swing connection plate 226 is provided in the longitudinal direction of the machine body.

  Further, a mounting shaft 227 for mounting the swinging connection plate 226 on the rear side of the main frame 3 is mounted in the left-right direction at a substantially central portion in the front-rear direction of the swinging connection plate 226. Bearing members 227 a such as bearings are mounted on the left and right sides of the mounting shaft 227. And the base part of the 2nd fertilization transmission rod 228 arrange | positioned in the direction extended in an up-down direction is provided in the rear-end part of the rocking | fluctuation connection plate 226, and the front-back direction of a body is carried out at the upper end part of this 2nd fertilization transmission rod 228. Mount the base of the swing arm 229 facing. Further, the front end portion of the swing arm 229 is attached to a fertilizer application amount adjusting device 230 that adjusts the amount of fertilizer supplied from the left and right fertilizer application devices 100 to the field. The fertilizer application amount adjusting device 230 is disposed behind the cockpit 55 and the engine cover 21 and below the rear step 47.

  The fertilizer application amount adjusting device 230 includes an adjustment turning arm 231 having elongated holes (not shown) on the left and right side surfaces, and a turning position changing pin provided slidably in the front-rear direction inside the left and right elongated holes. 232 and an adjustment handle 233 that slides the rotation position change pin 232 in the front-rear direction to increase or decrease the amount of fertilizer supplied. The rotation position changing pin 232 is attached to a support plate (not shown) that is rotated back and forth by operating the adjustment handle 233.

  When the adjustment handle 233 is rotated, the rotation position changing pin 232 is slid forward or rearward to change the rotation fulcrum position of the adjustment rotation arm 231, and the adjustment rotation arm 231 is turned up and down. Since the amount of movement is changed, the rotation angle of the feeding roll 108 when the adjustment rotation arm 231 rotates up and down by one reciprocation changes. Thereby, the space | interval which the feeding groove | channel 108a moves to the discharge | release phase of a fertilizer is changed, and the supply amount of the fertilizer of the left side fertilizer 101 and the right side fertilizer 102 is changed.

  For example, when the rotation position change pin 232 is slid to the rear side of the machine body, the vertical rotation width of the adjustment rotation arm 231 increases, so that the rotation angle of the supply roll 108 increases and the supply roll 108 releases the fertilizer. Since the interval to move to the phase is shortened, the amount of fertilizer supplied by the left and right fertilizer applicators 100 increases. On the other hand, when the rotation position change pin 232 is slid to the front side of the machine body, the vertical rotation width of the adjustment rotation arm 231 is reduced, so that the rotation angle of the supply roll 108 is reduced and the supply roll 108 is released from the fertilizer release phase. Therefore, the amount of fertilizer supplied by the left and right fertilizer application devices 100 is reduced. The fertilizer application amount adjusting device 230 can adjust the amount of fertilizer supplied in the fertilizer application device 100 by adjusting the operation amount of the fertilizer transmission shaft 235 described later by rotating the adjustment handle 233 as described above. It has become.

  Further, the front end portion of the swing arm 229 is attached to the rear end portion of the adjustment turning arm 231, and the front end portion of the adjustment turning arm 231 is arranged in a direction extending in the vertical direction. 3. Connect to the base of fertilizer transmission rod 234. The lower end portion of the third fertilization transmission rod 234 is connected to a mounting stay 236 that protrudes from the fertilization transmission shaft 235 extending in the left-right direction of the body toward the lower front side of the body. As described above, these members disposed from the rear wheel gear case 23 to the fertilization transmission shaft 235 are disposed on the rear wheel gear case 23 as a first fertilization transmission mechanism 141 that transmits a driving force to the fertilization transmission shaft 235. It is configured.

  Further, the fertilizer transmission shaft 235 is provided as a member for supplying a driving force to the fertilizer application apparatus 100 on both sides in the left-right direction of the machine body. The fertilizer transmission shaft 235 is rotatably mounted by attaching bearing members 237a provided on the left and right sides to the left and right fertilization frames 203. Further, the fertilizer transmission shaft 235 is disposed below the rear step 47, further below the swinging connection plate 226, and further to the front side of the body than the drive shafts of the left and right rear wheels 10. The relay duct 117 extending in the left-right direction of the machine body is disposed behind the fertilizer transmission shaft 235.

  Also, left and right transmission mounting stays 236L and 236R that protrude toward the lower front side of the machine body are welded and provided at positions closer to the left and right ends of the fertilizer transmission shaft 235 and inside the machine body than the bearing member 237a. The left and right transmission mounting stays 236L and 236R are provided with base portions of left and right fourth fertilization transmission rods 237L and 237R. In addition, left and right drive transmission plates 238 that transmit a driving force are attached to upper ends of the left and right fourth fertilization transmission rods 237L and 237R so as to be rotatable in the outer direction of the machine body.

  Here, the feeding shafts 109 of the plurality of feeding rolls 108 are connected between the front and rear of the feeding case 105. Among these, a feeding shaft 109 projecting toward the front side of the machine body from the feeding case 105 positioned on the rear side of the machine body, and a feeding shaft projecting toward the rear side of the machine body from the feeding case 105 positioned one front side of the machine body with respect to the feeding case 105. 109 are connected by left and right connecting bosses 240 each having a one-way clutch 239.

  The driving force output from the rear wheel gear case 23 can be transmitted to the plurality of feeding rolls 108 by connecting the left and right connecting bosses 240 to the outer ends of the left and right drive transmission plates 238. . That is, the transmission mounting stays 236L and 236R, the fourth fertilization transmission rods 237L and 237R, the drive transmission plate 238, and the connecting boss 240 are disposed on both sides of the fertilization transmission shaft 235 in the left and right direction of the machine body, The 2nd fertilization transmission mechanism 142 which transmits a driving force to each feeding roll 108 is comprised.

  By using the first fertilization transmission mechanism 141 and the second fertilization transmission mechanism 142 from the rear wheel gear case 23 to the connecting boss 240, each rotation angle corresponding to the fertilizer supply amount adjusted by the fertilization amount adjusting device 230 Moreover, it becomes the structure of the fertilization transmission path | route of the left and right fertilizer applicator 100 which the some delivery roll 108 rotates.

  FIG. 12 is an explanatory diagram of a transmission system for transmitting power to the wheels. The driving power that is shifted by the auxiliary transmission in the transmission case 28 and is output to the front wheels 5 and the rear wheels 10 is transmitted from the transmission case 28 to the front wheel final case 22 to be output to the front wheels 5 and the rear wheel gear case. 23 is output to the rear wheel 10. Among these, a front wheel which is a front wheel transmission mechanism disposed between the mission case 28 and the front wheel final case 22 on both sides of the mission case 28 in the left-right direction of the vehicle body and supplies driving force to the front wheels 5 on both sides of the vehicle body left-right direction. A transmission shaft 150 is provided.

  The front wheel transmission shaft 150 is arranged from the mission case 28 to the front wheel final cases 22 on both sides in the left-right direction of the machine body in accordance with the left and right front wheels 5. The front wheel final cases 22 arranged on both sides in the left and right direction of the vehicle body cover the ends of the front wheel transmission shaft 150 on the outer side in the left and right direction of the vehicle body, and the driving force transmitted by the front wheel transmission shaft 150 can be transmitted to the front wheels 5. It has become.

  FIG. 13 is a detailed view of a portion G in FIG. A differential mechanism 151 that is a differential device for the left and right front wheels 5 that is driven by the power generated by the engine 20 is disposed in the transmission case 28, and the differential mechanism 151 includes a left and right front wheel transmission shaft 150. The inner end in the left-right direction of the machine is connected. The differential mechanism 151 can switch the interlocking of the left and right front wheels 5, thereby enabling the left and right front wheels 5 to be driven separately or synchronized in the left and right directions.

  In the mission case 28, a differential lock claw 152, which is a differential switching member for switching the operation of the differential mechanism 151, is provided. The differential lock pawl 152 is disposed closer to one front wheel final case 22 among the front wheel final cases 22 disposed on both sides in the left-right direction of the machine body. The differential lock pawl 152 is composed of a pair of members, a member that rotates integrally with the differential mechanism 151 and a member that rotates integrally with the front wheel transmission shaft 150, at least one of which is a front wheel transmission shaft 150. By moving in the axial direction, both members can be connected or separated.

  Since the front wheel transmission shaft 150 does not rotate integrally with the differential mechanism 151 when the pair of members are separated from each other, the right and left front wheel transmission shafts 150 operate as the differential mechanism 151. Can be rotated separately according to. On the other hand, in a state where the pair of members of the differential lock claw 152 are connected, the front wheel transmission shaft 150 rotates integrally with the differential mechanism 151. For this reason, the differential mechanism 151 cannot support the left and right front wheel transmission shafts 150 at different rotational speeds, and the left and right front wheel transmission shafts 150 rotate together with the differential mechanism 151.

  FIG. 14 is an explanatory diagram of a power transmission system of the planting clutch and the fertilization clutch. A planting clutch 160 for switching on / off of transmission of power generated by the engine 20 to the seedling planting unit 60 side is disposed on the rear side of the mission case 28. Further, a fertilization clutch 163 for switching on / off of fertilization by the fertilizer application device 100 is disposed in the vicinity of the rear wheel gear case 23, and the fertilization clutch 163 is a portion located in the vicinity of the rear wheel gear case 23 in the main frame 3. Is attached. These planting clutch 160 and fertilization clutch 163 can be operated electrically, that is, can be switched on and off by the power transmitted from motor unit 166 that is driven electrically. It has become.

  The motor unit 166 is disposed below the rear step 47 (see FIG. 1), and is disposed at a position in the front-rear direction near the rear wheel gear case 23 and higher than the rear wheel gear case 23. 3 is attached. That is, the motor unit 166 is disposed behind the planting clutch 160 and above the fertilization clutch 163. The motor unit 166 includes an electric motor 167 that is driven by electric power, and a gear 168 that decelerates and outputs the power generated by the electric motor 167. Among these, the electric motor 167 is connected to the control device U and can be controlled by the control device U. The gear 168 meshes with a pinion gear attached to the output shaft on the electric motor 167 side. The direction is such that the rotation axis is in the left-right direction of the machine body, and the rotation axis is provided to rotate about the rotation axis by the power generated by the electric motor 167.

  The planting clutch 160 that switches the transmission of the driving force to the seedling planting unit 60 is provided in the mission case 28. Specifically, the planting clutch 160 is located above the front wheel transmission shaft 150 in the mission case 28. It is arranged. A planting operation rod 161 is disposed between the planting clutch 160 and the motor unit 166, and a fertilization operation rod 164 is disposed between the fertilization clutch 163 and the motor unit 166. The planting operation rod 161 is connected to the planting clutch 160 at a position near the upper end of the planting clutch 160, and the planting clutch 160 is moved by the planting operation rod 161 moving in the front-rear direction. It is possible to switch on / off of the planting operation of the seedling planting unit 60.

  In addition, the rear end portion of the planting operation rod 161 is connected to the gear 168 of the motor unit 166, and more specifically, is connected to the vicinity of the lower end of the gear 168. For this reason, the planting operation rod 161 can move in the front-rear direction in accordance with the rotation of the gear 168. The planting clutch 160 transmits the power from the motor unit 166 to the planting clutch 160 through the planting operation rod 161 in this way, so that the power generated by the engine 20 is transferred to the seedling planting unit 60 side. The transmission can be switched on and off.

  On the other hand, the fertilization operation rod 164 has a lower end portion connected to the fertilization clutch 163, and the fertilization clutch 163 moves the fertilization operation rod 164 up and down to turn on and off the fertilization operation of the fertilizer application apparatus 100. It is possible to switch. Further, the fertilizer application rod 164 has an upper end connected to the gear 168 of the motor unit 166, and more specifically, is connected to the vicinity of the front end of the gear 168. For this reason, the fertilizer application rod 164 can move in the vertical direction according to the rotation of the gear 168. In this manner, the fertilizer clutch 163 transmits and receives the power from the motor unit 166 to the fertilizer clutch 163 via the fertilizer operation rod 164, thereby switching the transmission of the power generated by the engine 20 to the fertilizer device 100 side. Can be switched.

  FIG. 15 is a schematic diagram of a floor step. A seedling receiving fence 170, which is a seedling receiving protrusion protruding above the upper surface of the floor step 40, is provided on the outer peripheral portion of the floor step 40 composed of the main step 41 and the side step 42. That is, the seedling receiving fence 170 is not provided in the rear step 47, but is disposed in the floor step 40 from the center in the front-rear direction of the body to the front side of the body. The seedling receiving fence 170 is provided as a wall-like member that rises upward from the floor step 40 at a relatively low height of about 5 cm to 10 cm, for example. Specifically, the seedling receiving fence 170 is not provided at a connection portion between the main step 41 and the side step 42, and is provided at many portions of the outer peripheral portion of the main step 41 and the side step 42 other than the connection portion. ing.

  In addition, the seedling receiving fence 170 is provided with a getting-on / off interval portion 171 defined in the longitudinal direction of the machine body at a position where the boarding / alighting step 45 is provided in the longitudinal direction of the machine body. That is, the seedling receiving fence 170 is lower in height than the other parts at the position where the boarding step 45 is arranged in the longitudinal direction of the aircraft, or the seedling receiving fence 170 is not provided. This portion serves as a boarding / alighting interval portion 171. Specifically, the boarding / alighting step 45 is disposed in the vicinity of the rear end of the side step 42 at the outer end in the left-right direction of the machine body, and a fertilizer application device 100 is provided behind the side step 42. For this reason, the boarding / alighting space | interval part 171 is provided between the fertilizer application apparatus 100 and the seedling receiving fence 170 in the body front-back direction.

  FIG. 16 is a plan view of a pulley provided in the hydraulic continuously variable transmission. The hydraulic continuously variable transmission 26 made of HST is provided with a pulley 180 on a power input shaft (not shown), and the power generated by the engine 20 uses a belt (not shown) wound around the pulley 180. Is transmitted to the pulley 180 through the hydraulic continuously variable transmission 26. The pulley 180 includes an outer peripheral portion 181 around which the belt is wound, an inner boss 182 attached to the input shaft of the hydraulic continuously variable transmission 26, and a plurality of ribs 183 that connect the outer peripheral portion 181 and the inner boss 182. have.

  Further, a plurality of blades 185 are provided between the outer peripheral portion 181 and the inner boss 182. As with the rib 183, the blade 185 has an outer end side in the axial direction of the pulley 180 connected to the outer peripheral portion 181 and an inner end side connected to the inner boss 182. Further, each blade 185 is formed in such a direction that wind can be sent to the hydraulic continuously variable transmission 26 side in the axial direction of the input shaft when the pulley 180 is rotated by the power transmitted from the engine 20. Yes.

  In addition, when providing the blade | wing 185 in the pulley 180 in this way, the rib 183 does not need to be provided. FIG. 17 is a plan view of a pulley without a rib. When the blade 185 is provided on the pulley 180, the rib 183 is not provided as shown in FIG. 17, and the outer peripheral portion 181 and the inner boss 182 may be connected only by the plurality of blades 185. That is, the outer peripheral portion 181 and the inner boss 182 may be supported only by a plurality of blades 185 arranged at equal intervals in the circumferential direction. Also in this case, it is preferable to form the blades 185 in such a direction that the wind can be sent to the hydraulic continuously variable transmission 26 side when the pulley 180 rotates.

  FIG. 18 is a side view of a rotary case included in the planting apparatus shown in FIG. 1. FIG. 19 is a view taken in the direction of arrows HH in FIG. 20 is a sectional view taken along line JJ in FIG. A rotary case 190 included in the planting device 61 is rotatable around a rotary shaft 191 extending in the left-right direction of the machine body, and is planted so as to be rotatable with respect to the rotary case 190 in the vicinity of the outer peripheral end of the rotation. A bayonet 62 is provided. The rotary case 190 configured in this manner is provided with a cover 195 that prevents the wrinkles from being wound around during rotation.

  The cover 195 is formed of a wire-like member, and has a mounting portion 196 that is a portion that is attached to the rotary case 190, and a protective portion 197 that is a portion that protects the bag from being wrapped around during rotation. doing. The cover 195 formed in this manner is attached to the rotary case 190 by attaching the attachment portion 196 to the rotary case 190 in the vicinity of the portion where the rotary shaft 191 is located. Further, the protection portion 197 is formed so as to be positioned in the vicinity of the oil seal 192 disposed in the vicinity of the exposed portion from the rotary case 190 in the rotary shaft 191. As a result, the cover 195 can prevent wrinkles from being wound around the rotary shaft 191 exposed from the rotary case 190 when the rotary case 190 is rotated. Can be prevented from being damaged.

  FIG. 21 is a detailed view of a column portion provided with a handle. A monitor panel 260 for displaying various information during operation of the seedling transplanter 1 is attached to the column portion 265 in which the handle 52 is disposed. The monitor panel 260 has a display surface 261 that displays information facing the direction of the operator's face when the operator is seated on the cockpit 55. Specifically, the monitor panel 260 is disposed such that the upper end side of the display surface 261 is inclined in a direction positioned on the front side of the machine body with respect to the lower end side of the display surface 261. The monitor panel 260 arranged in this way is provided with a collar 262 protruding from the display surface 261 in the vicinity of the upper end of the display surface 261.

  The seedling transplanter 1 according to the present embodiment is configured as described above, and the operation thereof will be described below. During operation of the seedling transplanter 1, traveling of the traveling vehicle body 2 and planting of seedlings placed on the seedling mounting table 65 are performed by the power generated by the engine 20. Of these, the planting operation is performed by rotating the planting basket 62 while the entire planting device 61 rotates in a direction in which the rotation axis is in the left-right direction. Gradually plant in the field. At the time of planting work, seedlings are planted in a plurality of strips by traveling in the field with the traveling vehicle body 2 while operating the planting device 61 in this way.

  The seedling planting unit 60 for planting seedlings as described above moves up and down as needed by operating the hydraulic lifting cylinder 76. For example, when the operator operates the planting lift lever, or when the traveling vehicle body 2 reaches the end of the field during the planting operation and the operator rotates the handle 52, the seedling planting unit 60 Goes up and down.

  The seedling planting unit 60 operates when power from the engine 20 is transmitted to the seedling planting unit 60 via the planting clutch 160. That is, when the planting clutch 160 is engaged, the power of the engine 20 is transmitted to the seedling planting unit 60 and the seedling planting unit 60 operates, and when the planting clutch 160 is released, the power of the engine 20 is Since it is not transmitted to the seedling planting unit 60, the seedling planting unit 60 stops. As described above, the planting clutch 160 that switches the operation state of the seedling planting unit 60 is disposed on the upper side of the machine body from the front wheel transmission shaft 150 in the mission case 28, so that mud does not easily enter the planting clutch 160. It has become.

  Further, when the traveling vehicle body 2 travels, the power generated by the engine 20 is transmitted to the belt-type power transmission mechanism 27, and is transmitted from the belt-type power transmission mechanism 27 to the hydraulic continuously variable transmission 26, so that the hydraulic continuously variable transmission is performed. It is converted into a desired rotation speed, rotation direction and torque by the device 26 and output. At this time, the pulley 180 attached to the hydraulic continuously variable transmission 26 is provided with blades 185 that can send wind toward the hydraulic continuously variable transmission 26 during rotation. For this reason, when the power of the hydraulic continuously variable transmission 26 is input, the wind is continuously cooled by the wind.

  The power output from the hydraulic continuously variable transmission 26 is transmitted to the mission case 28, and the sub-transmission in the mission case 28 is rotated at a rotational speed suitable for traveling speed on the road or when seedlings are planted. The speed is changed to a rotational speed suitable for the traveling speed and output to the front wheel 5 side or the rear wheel 10 side. A part of the power output from the mission case 28 is also transmitted to the seedling planting unit 60 side, and is used for planting work in the seedling planting unit 60. At this time, since the cover 195 is attached to the rotary case 190 of the seedling planting unit 60, it is possible to prevent the cover 195 from being wrapped around when the rotary case 190 is rotated.

  Moreover, when performing a fertilization operation | work with the left and right fertilizer application apparatuses 100, the feeding roll 108 in the feeding case 105 is rotated in a state where the fertilizer is stored in the storage hopper 103. At that time, the drop shutter 111 opens the drop opening 103a of the storage hopper 103 so that the fertilizer of the storage hopper 103 falls into the feeding case 105 from the drop opening 103a.

  The fertilizer that has entered the feeding case 105 enters the feeding groove 108 a at the upper half of the feeding roll 108 and moves downward as the feeding roll 108 rotates. That is, the driving force is transmitted from the rear wheel gear case 23 to the feeding rolls 108 included in the left and right fertilizing apparatuses 100 via the first fertilization transmission mechanism 141 and the second fertilization transmission mechanism 142, and the left and right feeding rolls 108. Is rotated by this driving force. The fertilizer that has entered the feeding groove 108 a in the left and right fertilizing apparatuses 100 moves downward from above as the feeding roll 108 rotates.

  The fertilizer that has entered the feeding groove 108a falls out of the opening portion of the feeding groove 108a when the feeding groove 108a is opened downward. The fertilizer falling from the feeding groove 108 a enters the fertilizer hose 115 disposed below the feeding case 105. The fertilizer application device 100 feeds the fertilizer that has entered into the feeding case 105 in this manner from the upper side to the lower side by the feeding roll 108 so as to feed the fertilizer in the direction of the fertilization hose 115 by a set amount.

  On the other hand, the fertilization work is performed while operating the blower 118. The blower 118 is driven to supply the sucked air to the relay duct 117 as a carrier wind, and supply the left and right ventilation ducts 116 and 116 from the left and right ends of the relay duct 117, respectively. The conveying air supplied to the ventilation ducts 116 and 116 flows to the fertilization hose 115.

  Here, the blower 118 is provided at the center in the left-right direction of the relay duct 117 and above the relay duct 117, and left and right ventilation ducts 116, 116 are connected to the left and right sides of the relay duct 117. Therefore, it is possible to supply the conveyance air.

  The fertilizer fed to the fertilization hose 115 from the feed case 105 of each of the left and right fertilizer application devices 100 is sent out toward the outlet of the fertilization hose 115 by the conveying air flowing from the left and right ventilation ducts 116 to the fertilization hose 115. Thereby, the fertilizer sent to the fertilizer hose 115 of the right and left fertilizer application apparatuses 100 is sent from the fertilizer hose 115 through the fertilizer hose 115 by the conveying wind, and fertilization to the farm field is performed. The fertilizer application device 100 that performs fertilization in this manner can change the rotation angle of the feeding roll 108 by rotating the adjustment handle 233 of the fertilization amount adjustment device 230 and adjusting the operation amount of the fertilization transmission shaft 235. The fertilizer supply amount by the left and right fertilizer application devices 100 can be adjusted.

  Thus, when performing planting work while applying fertilizer with the fertilizer application device 100 on both the left and right sides in the left-right direction of the body of the seedling transplanter 1, not only the operator who operates the traveling vehicle body 2 but also the supply of seedlings and fertilizers The auxiliary worker who performs can also work by getting on the traveling vehicle body 2. In this case, the auxiliary worker stands by at the rear step 47 and supplies seedlings to the seedling mounting table 65 or supplies fertilizer to the fertilizer application apparatus 100 as necessary. At this time, the relay duct 117, the fertilizer transmission shaft 235, and the fertilizer application amount adjusting device 230 that extend in the left-right direction of the machine body are all located in the rear step 47, so that they are not obstructed. Can work on the rear step 47.

  As described above, an operator or an auxiliary worker who gets on the seedling transplanting machine 1 gets on and off the floor step 40 from the getting-on / off step 45, but the getting-on / off interval portion 171 is placed on the seedling receiving fence 170 provided on the floor step 40. Therefore, the worker and the auxiliary worker get on and off the boarding / alighting interval portion 171. On the other hand, since the floor step 40 is provided with the seedling receiving fence 170 as described above, roll seedlings can be mounted on the floor step 40, and planting work can be performed with more seedlings mounted. Can start.

  In addition, when the seedling transplanter 1 is in operation, the operator performs the maneuvering while looking at the monitor panel 260 disposed in the column portion 265. Since the monitor panel 260 is provided with the rod 262, the monitor panel 260 The display surface 261 of 260 can be shaded by this ridge 262. For this reason, the information displayed on the display surface 261 is easy to see from the operator, and the operator performs the steering while visually recognizing this information.

  Further, when the seedling transplanting machine 1 is traveling, the differential mechanism 151 is operated, so that the left and right front wheels 5 travel with a difference in rotation, or the differential lock claw 152 is engaged so that the left and right front wheels 5 are moved. The diff lock claw 152 may need to be replaced, although the vehicle runs at a constant speed. In this case, the diff lock claw 152 is disposed closer to one front wheel final case 22 in the left-right direction of the machine body. Therefore, the diff lock claw 152 can be replaced by removing the front wheel final case 22 on the side where the diff lock claw 152 is disposed in the left-right direction of the body.

  In the seedling transplanter 1 according to the above embodiment, the left and right fertilizers 100 are arranged on the left and right sides of the rear step 47, and the fertilizer transmission shaft 235 and the fertilizer application amount adjusting device 230 are arranged below the rear step 47. The member that closes the front and rear of the rear step 47 and the seedling planting portion 60 is not disposed. Thereby, it is possible to approach the seedling planting unit 60 from the rear step 47 and replenish seedlings while maintaining the fertilization performance. As a result, it is possible to improve the workability of the seedling replenishment work to the seedling planting unit 60 without reducing the work efficiency of the fertilization work. Moreover, since the seedling replenishment work can be performed in a stable posture, the labor of the operator can be reduced.

  Moreover, the weight balance of an airframe can be stabilized by arrange | positioning the heavy left and right fertilizer 100 on the both right and left sides of the back side of the traveling vehicle body 2. FIG. As a result, the advancing direction of the machine body can be prevented from shifting in the left-right direction, and operability and seedling planting accuracy can be improved.

  Further, since the storage hoppers 103 are provided on both the left and right sides of the rear step 47, the storage hopper 103 can be disposed at a position where the rear step 47 can easily approach. As a result, the efficiency of the fertilizer supply work is improved. Further, since the relay duct 117 that connects the left and right ventilation ducts 116 is provided on the lower rear side of the rear step 47, the relay duct 117 can be prevented from obstructing the movement of the worker on the rear step 47. As a result, the work efficiency can be improved and the relay duct 117 can be prevented from being damaged by contact with the operator's foot.

  Further, since the left and right fertilizer application devices 100 are provided on the outer sides of the left and right rear wheels 10, the range in which the vertical position of the left and right fertilizer application devices 100 can be adjusted can be expanded. As a result, the vertical height on both the left and right sides of the machine body can be kept low, and the space during storage can be reduced. Further, since the storage hopper 103 can be expanded upward by the amount that the vertical positions of the left and right fertilizer application devices 100 are lowered, the amount of fertilizer that can be stored can be increased. As a result, the frequency of fertilizer replenishment work can be reduced, and work efficiency can be improved.

  Further, since the driving force is transmitted from the rear wheel gear case 23 to the fertilizer transmission shaft 235 via the first fertilizer transmission mechanism 141, the fertilizer application device 100 can be driven using the driving force of the traveling system. There is no need to separately construct a transmission path to 100. As a result, the number of parts can be reduced and the cost can be reduced, and maintenance can be improved by simplifying the configuration.

  Further, since the fertilizer application amount adjusting device 230 is disposed behind the cockpit 55 and the engine cover 21 and below the rear step 47 and the fertilizer transmission shaft 235 is also provided below the rear step 47, the fertilizer application amount adjusting device 230 is provided. The fertilizer transmission shaft 235 does not hinder the movement of the worker when the worker descends from the cockpit 55 and moves to the rear step 47. As a result, work efficiency can be improved.

  Also, by transmitting the driving force to the left and right feeding rolls 108 with a single fertilization transmission shaft 235, it is not necessary to configure the fertilization transmission path separately on the left and right, and the number of parts can be reduced, and the left and right As a result, the amount of fertilizer supplied from the feeding roll 108 can be made the same amount. As a result, it is possible to prevent the amount of fertilizer supplied from being different for each planting row of the planting rod 62 and to stabilize the growth of the seedling as a whole. Can be made.

  Since the seedling receiving fence 170 is disposed on the outer periphery of the floor step 40, the seedling placed on the floor step 40 can be prevented from falling outside the traveling vehicle body 2. As a result, the number of seedlings can be increased, and the frequency of replenishing seedlings is reduced, so that the work efficiency is improved. Moreover, since the boarding / alighting spacing portion 171 is provided between the left and right fertilizer application apparatuses 100 and the left and right seedling receiving fences 170, the operator can easily get on and off the traveling vehicle body 2 while providing the seedling receiving fences 170. As a result, the work efficiency can be improved and the labor of the worker can be reduced.

  Further, the differential lock claw 152 for switching the operation of the differential mechanism 151 is disposed at a position closer to the front wheel final case 22 on one of the left and right sides, so that the differential lock claw 152 is moved along the front wheel transmission shaft 150 by removing the front wheel final case 22. It can be moved to and removed. As a result, the replacement of the differential lock claw 152 is facilitated and the maintainability is improved.

  Further, since the planting clutch 160 is provided on the upper side of the machine body from the front wheel transmission shaft 150, the mounting position of the planting clutch 160 can be set to a position spaced upward from the field scene, and the mud that has jumped up during the work is It is possible to prevent the operation of the planting clutch 160 from being hindered. As a result, it is possible to prevent the planting clutch 160 from being engaged, and to prevent a missing section where seedlings are not planted, and to eliminate the need for the operator to plant seedlings to compensate for the missing section. . Further, the planting clutch 160 is not turned off, so that it is possible to prevent seedlings from being planted in unnecessary portions, and it is possible to suppress excessive consumption of seedlings. Furthermore, the planting clutch 160 can be prevented from being damaged by a load of mud adhering to the planting clutch 160, and durability can be improved.

  Further, since the pulley 180 of the hydraulic continuously variable transmission 26 is provided with blades 185 that can send wind toward the hydraulic continuously variable transmission 26 side, that is, the inside of the fuselage, it is necessary to provide a cooling fan separately. Disappear. As a result, the number of parts can be reduced, and the cost can be reduced.

  Further, since the cover 195 for preventing the winding of the scissors is provided on the rotary case 190, the scissors or the like can be prevented from being wound when the rotary case 190 is rotated, and the oil seal 192 can be prevented from being damaged by the winding of the scissors or the like. Can do. As a result, oil leakage due to damage to the oil seal 192 and water intrusion into the rotary case 190 can be prevented, and the durability of the rotary case 190 can be improved.

  In addition, since the collar 262 is provided on the upper portion of the monitor panel 260 on the display surface 261 side, the information displayed on the display surface 261 can be easily seen even during the day. As a result, it is possible to prevent an operation error during operation of the seedling transplanter 1, and to perform reliable traveling and each operation.

[Modification]
In the seedling transplanting machine 1 described above, the adjustment handle 233 is rotated manually, but the adjustment handle 233 is operated by an operation of an adjustment actuator (not shown) such as a motor or a cylinder. You may make it the structure rotated without an operator touching directly. In this case, a configuration may be adopted in which the adjustment actuator is operated by an operator operating a switch or a dial. Since the operation by the adjusting actuator is faster than the manual operation and fine adjustment can be performed, the time required for changing the fertilizer supply amount can be shortened. Accordingly, it is possible to prevent the supply amount of the fertilizer from being excessive or deficient with the change adjustment, and it is possible to perform a slight increase / decrease adjustment, thereby suppressing the consumption of the fertilizer.

  Further, the first fertilization transmission mechanism 141 is provided with a base of a switching transmission member (not shown) that switches the driving force in the left-right direction of the body from the upper end of the second fertilization transmission rod 228 and is driven on either the left or right side of the body. A structure in which a force is transmitted, and a swing arm 229 is provided at an end of the switching transmission member in a space below the left and right storage hoppers 103, and then a front end of the swing arm 229 is connected to the fertilizer application amount adjusting device 230. It is good. Thereby, since the fertilizer application amount adjusting device 230 can be disposed below one of the left and right storage hoppers 103, it is possible to prevent contact with an operator's feet moving on the rear step 47, and work efficiency. Can be greatly improved.

  Moreover, in the seedling transplanting machine 1 described above, the monitor surface 260 is provided with the ridge 262 to make the display surface 261 easy to see. However, a method for making the display surface 261 easy to see may be realized by other methods. FIG. 22 is a perspective view of a monitor panel, which is a modification of the seedling transplanter according to the embodiment. For example, the monitor panel 260 may have a diamond-shaped back surface of the lens portion 263 that is a portion for displaying information on the display surface 261 so that the entire lens portion 263 shines. Alternatively, a directional LED (Light Emitting Diode) bulb may be used inside the lens portion 263, and a printing surface may be provided in an irradiation range from the LED bulb in the lens portion 263. As a result, even when light hits the display surface 261 during the day, the information displayed on the lens portion 263 can be viewed.

  Moreover, it is preferable to use the language used in the country where the seedling transplanter 1 is used for the information displayed on the monitor panel 260. For example, when the seedling transplanter 1 is used in China, the information displayed on the monitor panel 260 is preferably in Chinese. Thus, by displaying the information displayed on the monitor panel 260 using the language of the country, the information displayed on the monitor panel 260 can be easily understood by the operator. As a result, it is possible to prevent an operation error during operation of the seedling transplanter 1, and to perform reliable traveling and each operation.

DESCRIPTION OF SYMBOLS 1 Seedling transplanter 2 Traveling vehicle body 3 Main frame 5 Front wheel 10 Rear wheel 20 Engine 22 Front wheel final case 23 Rear wheel gear case (rear wheel transmission member)
26 Hydraulic continuously variable transmission 28 Mission case 40 Floor step (boarding step)
45 Getting on / off step 47 Rear step (rear step)
DESCRIPTION OF SYMBOLS 50 Steering part 52 Handle 55 Pilot seat 60 Seedling planting part 61 Planting device 62 Planting basket 65 Seedling mounting stand 70 Seedling plant raising / lowering mechanism 71 Lifting link device 80 Planting depth adjusting device 81 Float 90 Spare seedling frame 100 Fertilizer application (granular material supply device)
103 Storage hopper (storage member)
104 Hopper lid 105 Feeding case 108 Feeding roll (feeding member)
115 Fertilizer hose (guide member)
116 Ventilation duct (ventilation member)
117 Relay duct (relay member)
118 Blower (winding device)
141 First fertilization transmission mechanism 142 Second fertilization transmission mechanism 150 Front wheel transmission shaft (front wheel transmission mechanism)
151 Differential mechanism 152 Differential lock claw (Differential switching member)
160 Planting clutch 170 Seedling fence (seedling protrusion)
171 Entry / exit interval portion 180 Pulley 185 Blade 190 Rotary case 195 Cover 225 First fertilizer transmission rod 226 Oscillating connecting plate 228 Second fertilizer transmission rod 229 Oscillating arm 230 Fertilizer application amount adjusting device 231 Adjustment turning arm 233 Adjustment handle 234 Third Fertilization transmission rod 235 Fertilization transmission shaft 237L, 237R Fourth fertilization transmission rod 238 Drive transmission plate 240 Connection boss 260 Monitor panel 262 ２６ 263 Lens

Claims (7)

A boarding step provided on the traveling vehicle body;
A rear step disposed behind the boarding step;
A seedling planting portion disposed at the rear of the traveling vehicle body for planting seedlings;
A granular material supply device that is arranged on both sides of the rear step in the left-right direction of the machine body and supplies the granular material to the field;
A fertilizer transmission shaft disposed below the rear step and supplying driving force to the granular material supply devices on both sides of the machine body in the left-right direction;
A fertilizer application amount adjusting device which is disposed below the rear step and adjusts the supply amount of the granular material in the granular material supply device by adjusting an operation amount of the fertilization transmission shaft;
A seedling transplanter characterized by comprising: The granular material supply device includes:
A storage member that is disposed on both sides of the rear step in the left-right direction of the machine body and stores the granular material,
A feeding member that is disposed below each of the storage members in the left-right direction of the machine body, and that feeds the granular material by a set amount;
A guide member that is disposed below each of the feeding members in the left-right direction of the machine body and guides the granular material to the field;
Left and right ventilation members that are connected to the respective guide members in the left and right direction of the machine body and that supply conveyance air for conveying the granular material to the guide members;
With
The ventilation members disposed on both sides in the left and right direction of the machine body are connected by a relay member disposed below the rear step and behind the fertilizer transmission shaft,
The seedling transplanting machine according to claim 1, further comprising a wind-up device that generates a conveying wind in the ventilation member disposed on both sides in the horizontal direction of the machine body. A rear wheel disposed on the rear side of the traveling vehicle body and on both sides in the lateral direction of the aircraft,
The seedling transplanter according to claim 2, wherein the granular material supply device is disposed on the outer side in the left-right direction of the body rather than the rear wheel located on both sides in the left-right direction of the body. A rear wheel transmission member for transmitting a driving force to the rear wheel disposed on both sides in the left-right direction of the machine body;
A first fertilization transmission mechanism that is disposed on the rear wheel transmission member and transmits a driving force to the fertilization transmission shaft;
A second fertilization transmission mechanism that is disposed on both sides of the fertilization transmission shaft in the left-right direction of the machine body and transmits a driving force to each of the feeding members on both sides in the left-right direction of the machine body;
The seedling transplanter according to claim 3, comprising: The outer periphery of the boarding step is provided with a seedling receiving projection that protrudes upward from the upper surface of the boarding step,
The seedling receiving protrusion is disposed from the center part in the longitudinal direction of the body to the front side of the body,
The boarding space part defined in the machine body front-back direction is provided between the said granular material supply apparatus and said seedling receiving protrusion of the both sides of a machine body right and left direction, The any one of Claim 1 to 4 characterized by the above-mentioned. The seedling transplanter according to item 1. Front wheels disposed on both sides in the left-right direction of the vehicle body on the vehicle body front side of the vehicle body;
A front wheel transmission mechanism that is disposed on both sides in the left-right direction of the body of a transmission case provided in the traveling vehicle body, and that supplies driving force to the front wheels on both sides in the left-right direction of the body;
A front wheel final case disposed on both sides in the left-right direction of the fuselage and covering the front wheel transmission mechanism;
A differential mechanism that is disposed in the mission case and switches the interlocking of the left and right front wheels;
A differential switching member that is disposed near one front wheel final case among the front wheel final cases disposed on both sides in the left-right direction of the machine body, and switches the operation of the differential mechanism;
The seedling transplanter according to any one of claims 1 to 5, wherein the seedling transplanter is provided. The transmission case is provided with a planting clutch that switches transmission of driving force to the seedling planting unit,
The seedling transplanter according to claim 6, wherein the planting clutch is disposed above the front wheel transmission mechanism.

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