JP2019022537A - Seedling transplanter - Google Patents

Abstract

To provide a seedling transplanter capable of reducing a labor and time which a worker requires in a loading work of a material.SOLUTION: A seedling transplanter 1 comprises: a travel vehicle body 2 having a floor and traveling on a farm field; a seedling planting part 60 attached to a rear part of the travel vehicle body 2 and planting seedlings to the farm field; a pair of storage parts 103 each of which is provided on each of both sides of a rear part of the travel vehicle body 2 in a lateral direction of the travel vehicle body 2 and which store granular materials; a steering part 50 provided on the travel vehicle body 2 in a protruding state upward with respect to the floor 40, and at least a part of which is positioned on a front side of the storage parts 103 in a cross direction of the travel vehicle body 2 and which steers the travel vehicle body 2; and a loading auxiliary device 110 provided on at least one side of the steering part 50 in a lateral direction, and movably supports the materials movably toward the storage parts 103.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seedling transplanter.

  Patent Document 1 discloses a seedling transplanting machine provided with a seedling planting portion that can be moved up and down at the rear of a traveling vehicle body, and provided with a fertilizer device that supplies granular material such as fertilizer to a farm field on a rear step of the rear portion of the traveling vehicle body. It is disclosed. Thereby, since the granular material supply operation can be performed while the seedling is planted, it is not necessary to perform the seedling planting operation and the fertilization operation separately, and the work efficiency is improved.

  Since the seedling transplanters of Patent Document 2 and Patent Document 3 supply fertilizer to seedlings planted by a fertilizer application apparatus, it is necessary to perform not only seedling replenishment work but also fertilizer replenishment work. For this reason, when the spare seedling is loaded on the spare seedling frame, the spare fertilizer is also loaded on the machine body, and when the fertilizer stored in the fertilizer application decreases, the fertilizer can be replenished without returning to the field edge. .

JP 2013-42747 A JP 2009-232809 A JP 2012-205504 A

However, in the seedling transplanting machines disclosed in Patent Documents 1 to 3, there is a problem that the operator needs to carry a fertilizer heavier than the seedling from the field end to the machine body, and the labor of the operator increases accordingly.
Especially in situations where it is difficult to load fertilizer directly into the machine from the field edge, such as when there is a waterway at the field edge or when the soil quality at the field edge is poor, the worker enters the field with heavy fertilizer and enters the mud. You have to move to the aircraft in an unstable state where you can take your feet. Although it is possible to load fertilizer on the reserve seedling frame, the spare seedling frame is assumed to be loaded with seedlings, so if it is used for loading heavy fertilizer, the load on the components of the reserve seedling frame However, there is a problem that the durability is deteriorated more quickly than usual and is easily damaged. If the amount of fertilizer is reduced, the above problem does not occur. However, since the time required for loading the fertilizer becomes longer, there is a problem that the work efficiency is greatly reduced.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the seedling transplanting machine which can reduce the effort concerning an operator by the loading operation of material.

In order to solve the above-described problems and achieve the object, the seedling transplanter according to claim 1 of the present invention includes a traveling vehicle body (2) that has a floor (40) and travels on a farm field, and the traveling vehicle body. (2) A seedling planting portion (60) that is attached to the rear portion and plantes seedlings in the field, and a granular material provided on both sides of the rear portion of the traveling vehicle body (2) in the left-right direction of the traveling vehicle body (2). A pair of storage parts (103) for storing, and provided on the traveling vehicle body (2) so as to protrude upward with respect to the floor (40), and at least a part of the storage part in the front-rear direction of the traveling vehicle body (2) (103) is located in front of the control unit (50) for operating the traveling vehicle body (2) and the control unit (50) in the left-right direction. 103) A loading assist device that is movably supported toward (110)
The loading assist device (110) includes:
A pair of extending members fixed to the floor (40) and extending along the front-rear direction;
A plurality of rotating bodies (114) provided to be spaced apart from each other in the front-rear direction and rotatably supported by the extending member and supporting the material are provided, and the material is also supported by the upper surface of the extending member. It is characterized by that.

  The invention described in claim 2 is the seedling transplanter according to claim 1, wherein the loading assist device (110) is provided above the floor (40) and extends along the front-rear direction. And a pair of support members (109) that are spaced apart from each other in the left-right direction and support the material, and are located below the pair of support members (109) on the floor (40). An opening (41b) penetrating the floor (40) is provided in the vertical direction of the traveling vehicle body (2).

  The invention according to claim 3 is the seedling transplanter according to claim 1, wherein the loading assist device (110) extends along the front-rear direction and is spaced from each other in the left-right direction. A pair of support members (109) that support the material, and when the pair of support members (109) are viewed from above, at least one of the pair of support members (109) The vehicle body (2) is positioned outside the traveling vehicle body (2) in the left-right direction, and the space between the pair of support members (109) is positioned in front of the storage portion (103).

  According to a fourth aspect of the present invention, there is provided the seedling transplanting machine according to the second or third aspect, wherein the loading assist device (110) is movable along the front-rear direction. ), A loading platform (116) on which the material is loaded, a drive source (119), and a transport mechanism that moves the loading platform (116) along the front-rear direction by the power of the drive source (119). (120), and the support member (109) supports the material via the loading platform (116).

  The invention according to claim 5 is the seedling transplanter according to claim 4, further comprising a weight detection unit (123) and a control unit (125), wherein the loading platform (116) is the storage unit. Between the first position (P1) ahead of the part (103) and the second position (P2) closer to the storage part (103) than when located at the first position (P1) The weight detector (123) detects the weight of the loading platform (116) located at the second position (P2), and the controller (125) detects the weight of the drive source (119). ) To move the loading platform (116) from the first position (P1) to the second position (P2), and when the weight detection unit (123) detects a weight exceeding a specified value, The drive source (119) is stopped and the weight detector (123) If you no longer detects, characterized in that moving the to the driving source (119) the mounting base by driving (116) said first position from said second position (P2) and (P1).

  The invention according to claim 6 is the first operation member (121) that is provided in the steering section 50 and operates the drive source (119) in the seedling transplanter according to claim 4 or 5. And a second operating member (122) that is provided in the loading assist device (110) and operates the drive source (119).

  The invention according to claim 7 is the seedling transplanter according to claim 6, wherein the control unit (50) includes a traveling operation member (54) for performing an operation related to traveling of the traveling vehicle body (2). The second operating member (122) is provided on either of the left and right sides of the control unit (50). It is characterized in that it is provided on the opposite side to said one.

  The seedling transplanter according to claim 1 is provided with a loading assist device (110) that supports the material so as to be movable toward the storage portion (103), so that a relatively heavy material such as a fertilizer bag can be obtained. It can be moved to the vicinity of the reservoir (103) using the loading assist device (110) while being supported by the loading assist device (110). That is, the worker does not need to have the material by supporting the material on the loading assist device (110). Therefore, as an example, it is possible to reduce the labor applied to the worker in the work of loading the material into the storage unit (103).

  Further, the loading assist device (110) is provided with a plurality of rotating bodies (114) that are provided at intervals in the front-rear direction and are rotatably supported by the extending member (113) to support the material. By rotating the body (114), the material can be moved to the vicinity of the reservoir (103) with a relatively small force. Therefore, it is possible to reduce the labor applied to the worker in the work of loading the material into the storage unit (103).

  Further, in addition to the effect of the invention of claim 1, the seedling transplanting machine according to claim 2 is located on the floor (40) below the pair of support members (109) and above and below the traveling vehicle body (2). By providing the opening (41b) penetrating the floor (40) in the direction, the water and mud adhering to the material can be opened during the movement (conveyance) of the material by the loading assist device (110). Can be dropped from the section (41b) to the field. Therefore, it becomes difficult for water and mud to collect on the floor (40), and the operator can easily move on the floor (40). Further, since water and mud are less likely to stay on the floor (40), the time and labor required for the floor (40) cleaning work (mud removing work) can be reduced. Therefore, the labor consumed by the worker is reduced.

  Further, in addition to the effect of the invention of claim 1, the seedling transplanting machine according to claim 3 is characterized in that when the pair of support members (109) are viewed from above, the pair of support members (109) At least one is located outside the traveling vehicle body (2) in the left-right direction of the traveling vehicle body (2), and between the pair of support members (109) is located in front of the storage portion (103), It can suppress that a pair of supporting member (109) prevents the movement of an operator on a traveling vehicle body (2). Therefore, the operator can easily move on the traveling vehicle body (2), and the workability is improved. In addition, since a space is formed below at least a portion between the pair of support members (109), water or mud adhering to the material can be removed during the movement (conveyance) of the material by the loading assist device (110). It can be dropped to the field from between the pair of support members (109). Thereby, it becomes difficult for water and mud to collect on the traveling vehicle body (2), and the operator can easily move on the traveling vehicle body (2). Moreover, since water and mud are less likely to stay on the traveling vehicle body (2), the time and labor required for the cleaning operation (mud removing operation) of the traveling vehicle body (2) can be reduced. Thereby, the labor which an operator spends is reduced.

  In addition, in the seedling transplanting machine according to claim 4, in addition to the effect of the invention of claim 2 or 3, the transport mechanism (120) moves the loading platform (116) along the front-rear direction by the power of the drive source (119). Thus, the material loaded on the loading platform (116) can be moved (conveyed) by the power of the drive source (119). Thereby, since the worker can move the material toward the storage unit (103) without pushing the material toward the storage unit (103), the material is loaded into the storage unit (103). Can be saved.

  Further, in the seedling transplanting machine according to claim 5, in addition to the effect of the invention of claim 4, the control unit (125) controls the drive source (119) to place the loading platform (116) in the first position. When moving from (P1) toward the second position (P2) and the weight detection unit (123) detects a weight that exceeds a specified level, the drive source (119) is stopped. Therefore, even if there is no operation to stop the loading platform (116) by the operator at the second position (P2), the loading platform (116) loaded with materials and having a weight exceeding a specified value is automatically It can be stopped at the position (P2). Further, when the weight detection unit (123) no longer detects the weight exceeding the specified value, the control unit (125) drives the drive source (119) to move the loading platform (116) from the second position (P2). By moving to the first position (P1), the material is removed and the weight becomes less than the specified weight even if the operator does not move the loading platform (116) to the first position (P1). The loading platform (116) can be automatically returned to the first position (P1). Therefore, the work efficiency of the loading work is improved.

  Further, in the seedling transplanting machine according to claim 6, in addition to the effect of the invention of claim 4 or 5, the first operating member (121) for operating the drive source (119) is provided with the control unit (50). And the second operating member (122) for operating the drive source (119) is provided in the loading assist device (110), so that the first operating member (121) and the second operating member (122) are operated. If the second operation member (122) is not operated, the loading platform (116) does not move, and therefore it is possible to suppress the loading platform (116) from moving against the operator's intention. Therefore, work safety is improved. In addition to the first operating member (121), the second operating member (122) can also operate the drive source (119), so that an operator who loads materials into the traveling vehicle body (2) from the outside of the field is the first. Since the drive source (119) can be operated by the second operation member (122), the operability of the drive source (119) is improved. This eliminates the need for the operator to move to the first operating member (121) in order to operate the drive source (119), thereby reducing the labor of the operator.

  Further, in the seedling transplanting machine according to claim 7, in addition to the effect of the invention of claim 6, the steering part (50) has the traveling operation member (54) on either the left or right side of the steering part (50). And the second operating member (122) is provided on the opposite side of the left and right sides of the control portion (50) from the one provided with the traveling operating member (54). When the operator operates the second operation member (122), the operator's hand can be prevented from coming into contact with the travel operation member (54). Thereby, it can suppress that a traveling vehicle body (2) accelerates / decelerates rapidly, it is suppressed that a traveling vehicle body (2) moves outside a farm field, and the efficiency of the material loading operation | work at the field end improves. To do.

FIG. 1 is a side view of the seedling transplanter of the first embodiment. FIG. 2 is a plan view of the seedling transplanter of the first embodiment. FIG. 3 is a side view schematically showing a part of the seedling transplanter of the first embodiment. FIG. 4 is a plan view schematically showing a part of the seedling transplanter of the first embodiment. FIG. 5 is a side view of a seedling transplanter according to a first modification of the first embodiment. FIG. 6 is a side view schematically showing a part of a seedling transplanter according to a second modification of the first embodiment. FIG. 7 is a plan view schematically showing a part of a seedling transplanter according to a third modification of the first embodiment. FIG. 8 is a side view of a seedling transplanter of a fourth modification of the first embodiment. FIG. 9 is a plan view of a seedling transplanter according to a fourth modification of the first embodiment. FIG. 10 is a side view of the seedling transplanter of the second embodiment. FIG. 11 is a plan view of the seedling transplanter of the second embodiment. FIG. 12 is a side view of the seedling transplanter of the third embodiment. FIG. 13 is a plan view of the seedling transplanter of the third embodiment. FIG. 14 is a side view of the seedling transplanter of the fourth embodiment. FIG. 15 is a plan view of the seedling transplanter of the fourth embodiment. FIG. 16 is a block diagram illustrating a configuration of the loading assist device according to the fourth embodiment. FIG. 17 is a flowchart illustrating a conveyance process performed by the control unit of the fourth embodiment. FIG. 18 is a plan view of the seedling transplanter of the fifth embodiment.

  Hereinafter, embodiments and modifications will be described in detail with reference to the drawings. In the following embodiments and modifications, similar components are included. Therefore, in the following, common reference numerals are given to those similar components, and redundant description is omitted.

[First Embodiment]
FIG. 1 is a side view of the seedling transplanter of the first embodiment. FIG. 2 is a plan view of the seedling transplanter of the first 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. In the following description, unless otherwise specified, the front-rear direction is the front-rear direction of the traveling vehicle body 2, the left-right direction is the left-right direction of the traveling vehicle body 2, and the up-down direction is the upper-lower direction of the traveling vehicle body 2.

  The seedling transplanter 1 of 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. An auxiliary wheel can be detachably attached to the inside of the rear wheel 10 via the axle of the rear wheel 10. The auxiliary wheel is configured to generate substantially the same diameter as the rear wheel 10 and to generate a propulsive force of the airframe by contacting the rear wheel 10 together with the farm field. 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 (see FIG. 4) mounted on the main frame 3, and power generated by the engine 20 as driving wheels and a seedling planting unit. , And a power transmission device 25 for transmitting to the power transmission device 60. That is, in the seedling transplanting machine 1 of the present embodiment, the power of the engine 20 as a power source is used not only for moving the traveling vehicle body 2 forward and backward, but also for driving the seedling planting unit 60, A heat engine such as a diesel engine or a gasoline engine is used.

  Further, the engine 20 is disposed at a substantially center in the left-right direction of the traveling vehicle body 2 and protruding upward from the floor 40 of the traveling vehicle body 2. The floor 40 is also referred to as a floor step.

  The floor 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. The floor 40 has a pair of left and right side floors 41 extending in the front-rear direction, and a control floor 42 positioned in front of the engine 20. The pair of side floors 41 are connected to each other by a control floor 42. Each side floor 41 has a mesh portion 41a (see-through portion). The mesh portion 41a is provided with a plurality of openings 41b penetrating the floor 40 in the vertical direction. The opening 41b is a through hole. By this opening 41b, mud attached to the shoes can be dropped onto the field. In addition, on both sides of the floor 40 in the left-right direction, a boarding / alighting step 45 is provided for an operator to get on when getting on and off the floor 40.

  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 40. The rear step 47 is also referred to as a rear floor. The rear step 47 is disposed at a position higher than the floor 40 and is disposed from the left and right sides of the engine 20 to the rear.

  The engine 20 protrudes upward from the floor 40, and an engine cover 21 that covers the engine 20 is disposed in a portion protruding from the floor 40. That is, the engine cover 21 covers the engine 20 while protruding upward from the floor 40.

  Further, the traveling vehicle body 2 is provided with a cockpit 55 at the upper part of the engine cover 21, and in front of the pilot seat 55 and at the front center of the traveling vehicle body 2, a steering unit that steers the traveling vehicle body 2. 50 is arranged. The control unit 50 is provided between the pair of left and right side floors 41 and protrudes upward with respect to the floor surface (upper surface) of the floor 40. A control floor 42 is provided between the cockpit 55 and the control unit 50.

  Various operating devices, fuel tanks 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. In FIG. 2, the handle 52 is omitted. 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, as the lever, the operating state of the speed change lever 54 that is a traveling operation member that operates the forward and backward advancement and traveling speed of the traveling vehicle body 2 and the seedling planting unit 60 is at least raised by the planting unit lifting mechanism 70. A planting elevating lever that is a planting operation member that can be switched including is disposed. A brake pedal 53 is provided so as to protrude upward from the floor 40.

  In addition, a spare seedling frame 90 on which supplementary seedlings are placed is disposed on portions of the floor 40 located on the left and right sides of the control unit 50, that is, on the front side of the machine body. The preliminary seedling frame 90 is supported by a support shaft protruding from the floor 40. The support shaft is connected to the spare seedling frame 90 in the vicinity of the center of the preliminary seedling frame 90 in the front-rear direction.

  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 40. In the seedling transplanter 1 of this embodiment, the hydraulic continuously variable transmission 26 is viewed from the upper surface of the traveling vehicle body 2. The engine 20 is disposed in front of the engine 20.

  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.

  Further, the power transmission device 25 has a transmission case in which the output from the engine 20 is transmitted via a belt-type power transmission mechanism 27 and a hydraulic continuously variable transmission 26. This mission case is attached to the front portion of the main frame 3. In the transmission case, the output from the engine 20 transmitted via the belt-type power transmission mechanism 27 and the hydraulic continuously variable transmission 26 is shifted by the auxiliary transmission in the transmission case, and the front wheel 5 and the rear wheel The power for traveling to 10 and the power for driving to the seedling planting unit 60 can be output separately.

  Among these, a part of the driving power can be transmitted to the front wheel 5 via the left and right front wheel final cases, and the rest can be transmitted to the rear wheel 10 via the left and right rear wheel gear cases. 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 lifting / lowering 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 are upper link members that are relatively positioned on the upper side. And a lower link 74 which is a lower link member. A pair of left and right upper links 73 and lower links 74 are provided.

  In the lifting link device 71, an upper link 73 and a lower link 74 are rotatably connected to a link base frame 75, which is a rear-view portal type rear frame erected at the rear end of the main frame 3. The other end side is rotatably connected to the seedling planting part 60, so that the seedling planting part 60 is connected to the traveling vehicle body 2 so as to be movable 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 lifting and 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, and adjusts to the depth of the field. If it is composed of a main float that has the function of raising and lowering the seedling planting part 60 and a left and right side float that slides and leveles the field where the seedling is planted on both the left and right sides of the main float, according to changes in the depth of the field It becomes possible to automatically adjust the planting depth of the seedling, and the planting accuracy of the seedling is 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.

In addition, on both sides of the rear step 47 in the left-right direction, a fertilizer application device 100 (storage hopper 103), which is a granular material supply device that supplies granular material to the field, is disposed. The fertilizer application apparatus 100 can supply the granular fertilizer stored in the storage hopper 103 to the farm field by a certain amount during planting work. Specifically, the fertilizer applying device 100 disposed on both sides in the left-right direction specifically includes a left fertilizer 101 located on the left side of the rear step 47 and a right fertilizer 102 located on the right side of the rear step 47. Are arranged. These left and right fertilizer application devices 100 are disposed on the outer side in the left-right direction with respect to the rear wheels 10 located on both sides in the left-right direction.

  The fertilizer application device 100 disposed on both sides in the left-right direction includes a storage hopper 103 that is a storage unit that stores granular fertilizer, a feeding roll that is a feeding member that feeds the fertilizer in the storage hopper 103 by a set amount, and fertilizer And a ventilation duct 106 that is a ventilation member that supplies a conveying air for conveying the fertilizer to the fertilization hose. Among these, the storage hoppers 103 are disposed on both sides of the rear step 47 in the left-right direction, and the feeding rolls are disposed below the respective storage hoppers 103 in the left-right direction. Moreover, the fertilization hose is arrange | positioned under each delivery roll of the left-right direction, and the ventilation duct 106 is connected with each fertilization hose of the left-right direction.

  The storage hopper 103 has a substantially rectangular parallelepiped outer shape that is long in the front-rear direction. The storage hopper 103 is provided with a hopper lid portion 104 that covers an upper opening of the storage hopper 103 so as to be opened and closed. The hopper lid portion 104 is rotatably supported on the rear end portion of the upper portion of the storage hopper 103. The hopper lid portion 104 can be rotated around a rotation center along the left-right direction. That is, the hopper lid 104 opens and closes by rotating in the front-rear direction. Specifically, when the hopper lid portion 104 is rotated backward, the upper portion of the storage hopper 103 is opened, and when it is rotated forward, the upper portion of the storage hopper 103 is covered. Thereby, since it is easy to put material into the storage hopper 103 from the front of the storage hopper 103, work efficiency improves.

  As described above, the storage hoppers 103 for storing the fertilizer are arranged on the left and right sides of the traveling vehicle body 2, so that there is no member blocking between the rear portion of the traveling vehicle body 2 and the seedling planting unit 60 and the work on the rear step 47 is performed. 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. Thus, 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.

  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. (Patchon lock) is provided, the left and right hopper lids 104 open during work, fertilizer jumps out, rainwater, field water, etc. enter the left and right storage hoppers 103, and the fertilizers stick together into a lump. As a result, fertilizer consumption can be reduced.

  FIG. 3 is a side view schematically showing a part of the seedling transplanter of the first embodiment. FIG. 4 is a plan view schematically showing a part of the seedling transplanter of the first embodiment. The ventilation ducts 106 disposed on both sides in the left-right direction are connected by a relay duct 107 that is a relay member (air chamber). The relay duct 107 is connected to the ventilation ducts 106 on both sides in the left-right direction by extending in the left-right direction, and the relay duct 107 is disposed below the rear step 47. A blower 105, 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 107 and above the relay duct 107. The blower 105 is disposed immediately above (above) the engine 20 and is covered with the engine cover 21. The blower 105 is located above the floor surface of the floor 40. Thereby, it can suppress that rainwater, muddy water of a farm field, etc. enter into the blower 105. FIG. The blower 105 is arranged in a posture in which the suction port 105a formed in the cover 105b faces (opens) one side in the left-right direction. The blower 105 rotates the wind fan with a blower motor provided in the cover 105b, and the air taken in from the suction port 105a is used as the conveying wind.

  With the above configuration, the conveying air generated by the blower 105 enters the ventilation ducts 106, 106 on the left and right sides of the machine body from the relay duct 107, and fertilizer such as fertilizer dropped from the storage hoppers 103, 103 on the left and right sides of the machine body. Since each fertilizer hose can be guided to the left and right fertilization hoses, it is possible to generate a conveying wind that guides the fertilizer dropped from the left and right storage hoppers 103 by one blower 105 to the respective fertilization hoses on the left and right sides. Reduction and weight reduction of the fuselage.

  Further, since the relay duct 107 is arranged at the rear part of the traveling vehicle body 2 so as to pass below, when the worker performs a seedling replenishment work or the like on the rear step 47, the relay duct 107 increases the movement range of the worker. There is no limit and work efficiency is improved. Further, the rear step 47 can be formed into a flat shape.

  As shown in FIGS. 1 and 2, the traveling vehicle body 2 is provided with a loading assist device 110. The loading assist device 110 is provided on at least one side of the control unit 56 in the left-right direction. In the present embodiment, as an example, as the loading assist device 110, the right loading assist device 111 positioned on the right and right side floor 41 of the control unit 56 and the left and left side floor 41 of the control unit 56 are provided. And a left side loading assist device 112 located at the left side. These loading assist devices 110 support a material such as a fertilizer bag so as to be movable toward the storage hopper 103.

Each loading assist device 110 has a pair of left and right support members 109. The pair of left and right support members 109 are provided above the side floor 41. The pair of left and right support members 109 extend along the front-rear direction and are spaced apart from each other in the left-right direction. An opening 41 b of the side floor 41 is located below the pair of left and right support members 109. The support member 109 includes a pair of left and right extending members 113 and a plurality of rotating bodies 114 provided on each extending member 113. The pair of left and right extending members 113 are provided substantially parallel to each other and extend along the front-rear direction. The extending member 113 is formed in a rod shape that is long in the front-rear direction. The extending member 113 is provided across the front end portion of the traveling vehicle body 2 and the rear end portion of the side floor 41.
The extending member 113 is fixed to the floor 40. The extending member 113 is also referred to as a rail or a guide member. The plurality of rotating bodies 114 are provided at intervals in the front-rear direction. Each rotating body 114 is supported by the extending member 113 so as to be rotatable around a rotation center (rotation center axis) along the left-right direction. The upper end portion of the rotating body 114 protrudes upward with respect to the upper surface of the extending member 113. The rotating body 114 is, for example, a roller. The pair of left and right support members 109 configured as described above support the material by the plurality of rotating bodies 114. The material supported by the rotating body 114 is pushed by, for example, an operator and moves on the rotating body 114. At this time, the rotating body 114 rotates as the material moves. At this time, the material may be supported also on the upper surface of the extending member 113.

  The seedling transplanter 1 of 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.

  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. The power output from the hydraulic continuously variable transmission 26 is transmitted to the transmission case, and the sub-transmission in the transmission case is used to rotate at a speed suitable for traveling on the road or at the time of seedling planting. Is output to the front wheel 5 side or the rear wheel 10 side. A part of the power output from the mission case is also transmitted to the seedling planting unit 60 side, and is also used for planting work in the seedling planting unit 60.

  Moreover, when performing a fertilization operation | work with the left and right fertilizer application apparatuses 100, in the state which stored the fertilizer in the storage hopper 103, a feeding roll is rotated and it delivers to a fertilization hose by a set amount. This fertilization work is performed while the blower 105 is operated. The blower 105 is driven to supply the sucked air to the relay duct 107 as a conveying wind, and supply the left and right ventilation ducts 106 and 106 from the left and right ends of the relay duct 107, respectively. The conveying air supplied to the ventilation ducts 106 and 106 flows to the fertilization hose.

  Here, the blower 105 is provided at the center in the left-right direction of the relay duct 107 and above the relay duct 107, and left and right ventilation ducts 106, 106 are connected to the left and right sides of the relay duct 107. Therefore, it is possible to supply the conveyance air.

  The fertilizer fed to the fertilizer hose is sent out toward the outlet of the fertilizer hose by the conveying air flowing from the left and right ventilation ducts 106 to the fertilizer hose. Thereby, the fertilizer sent to the fertilization hose of the left and right fertilizer application devices 100 is sent from the fertilization hose through the respective fertilization hoses by the conveying wind, and fertilization to the field is performed.

  In this way, when performing planting work while fertilizing with the fertilizer application device 100 on both the left and right sides in the left-right direction of the seedling transplanter 1, not only the operator who steers the traveling vehicle body 2 but also the supply of seedlings and fertilizers. The auxiliary worker who performs can also get on the traveling vehicle body 2 and perform work. 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.

  In addition, the worker can use the loading assist device 110 when replenishing the storage hopper 103 with fertilizer. For example, the operator places the fertilizer bag on the front end portion of the support member 109 from the front of the seedling transplanter 1, and pushes and moves the fertilizer bag on the support member 109 backward to move the fertilizer bag to the storage hopper 103. Can be moved to the vicinity of

  As described above, the seedling transplanter 1 of this embodiment includes the loading assist device 110 that supports the material so as to be movable toward the storage hopper 103. Thereby, for example, a relatively heavy material such as a fertilizer bag can be moved to the vicinity of the storage unit 103 using the loading assist device 110 while being supported by the loading assist device 110. That is, the worker does not need to have the material by supporting the material on the loading assist device 110. Therefore, as an example, it is possible to reduce the labor applied to the worker in the work of loading the material into the storage unit 103.

  In the present embodiment, the loading assist device 110 includes a plurality of rotating bodies 114 that are provided at intervals in the front-rear direction, are rotatably supported by the extending member 113, and support materials. Thereby, the material can be moved to the vicinity of the storage hopper 103 with a relatively small force by the rotation of the rotating body 114. Therefore, it is possible to reduce the labor applied to the worker in the work of loading the material into the storage hopper 103.

  In the present embodiment, the seedling transplanter 1 is provided with an opening 41 b that is positioned below the pair of support members 109 and penetrates the floor 40 in the vertical direction of the traveling vehicle body 2. Thereby, the water and mud adhering to the material can be dropped from the opening 41b to the field during the movement (conveyance) of the material by the loading assist device 110. Therefore, it becomes difficult for water and mud to collect on the floor 40, and the operator can easily move on the floor 40. In addition, since water and mud are less likely to stay on the floor 40, the time and labor required for the cleaning work (mud removing work) of the floor 40 can be reduced. Therefore, the labor consumed by the worker is reduced.

  In the present embodiment, the seedling transplanter 1 includes left and right storage hoppers 103 provided on both the left and right sides of the traveling vehicle body 2. Thereby, in the rear part of the traveling vehicle body 2, a member that closes the front and rear of the rear step 47 and the seedling planting part 60 is not arranged. Therefore, it is possible to approach the seedling planting unit 60 from the rear step 47 and replenish seedlings while maintaining 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.

  Here, in the case of the conventional configuration in which a fertilizer is provided across the left and right direction of the rear part of the traveling vehicle body, there is a problem that the rear step cannot be used as a work place when an operator replenishes the seedling planting part. is there. As a result, the operator needs to replenish seedlings from a place away from the seedling planting unit, so that the labor required for the replenishment work of the seedlings increases and the efficiency of the replenishment work of the seedlings decreases. In order to alleviate the above problem, the seedling planting part may be raised when the seedling is replenished to shorten the distance between the traveling vehicle body and the seedling planting part. However, if you forget to close the cover of the fertilizer when raising the seedling planting part, the seedling planting part interferes with the cover of the fertilizer application system, and the raising speed decreases and the work efficiency decreases. There is a problem that the resin lid breaks at the time of contact. Furthermore, in an operation where not only the operator but also an auxiliary worker who supplies seedlings and granular materials stands by on the traveling vehicle body, the auxiliary worker is unlikely to wait for the step, and the standby position of the auxiliary worker is limited. There is a problem. On the other hand, in the present embodiment, since the left and right storage hoppers 103 are provided on both the left and right sides of the traveling vehicle body 2 as described above, the above problem is solved.

  Moreover, in this embodiment, the weight balance of the traveling vehicle body 2 can be stabilized by arranging the heavy left and right fertilizers 100 on the left and right sides on the rear side of the traveling vehicle body 2. As a result, the traveling direction of the traveling vehicle body 2 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. In addition, since the relay duct 107 that connects the left and right ventilation ducts 106 is provided below the rear step 47, the relay duct 107 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 107 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 outside the traveling vehicle body 2 relative to the left and right rear wheels 10, the range in which the vertical position of the left and right fertilizer applications 100 can be adjusted can be expanded. As a result, the vertical height of the left and right sides of the traveling vehicle body 2 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.

[First Modification]
FIG. 5 is a side view of a seedling transplanter according to a first modification of the first embodiment. The seedling transplanter 1 </ b> A of this modification has the same configuration as the seedling transplanter 1. However, the seedling transplanter 1 </ b> A of the present modification mainly differs from the seedling transplanter 1 in that a horizontal portion 41 c is provided at the rear end of the floor 40. The horizontal portion 40 c constitutes the side floor 41. The horizontal portion 40 c is located above the getting-on / off step 45 and is provided substantially parallel to the upper surface of the getting-on / off step 45. And the loading assistance apparatus 110 is extended from the front part of the traveling vehicle body 2 to the horizontal part 40c.

[Second Modification]
FIG. 6 is a side view schematically showing a part of a seedling transplanter according to a second modification of the first embodiment. The seedling transplanter 1 </ b> B of this modification has the same configuration as the seedling transplanter 1. However, in the seedling transplanter 1B of this modification, the blower 105 is disposed above the floor 40 and directly above (above) the engine 20 with the suction port 105a facing upward (opened). Is mainly different from the seedling transplanter 1. In such a configuration, mud is less likely to enter the blower 105 from the suction port 105a. It is difficult for mud and water scattered as the traveling vehicle body 2 travels to enter the blower 105 from the suction port 105a. Therefore, damage to the blower 105 is suppressed and the time required for maintenance work of the blower 105 is shortened.

[Third Modification]
FIG. 7 is a plan view schematically showing a part of a seedling transplanter according to a third modification of the first embodiment. The seedling transplanter 1 </ b> C of this modification has the same configuration as the seedling transplanter 1. However, in the seedling transplanter 1C of the present modification, the blower 105 is disposed above the floor 40 and directly above (above) the engine 20 with the suction port 105a oriented downward (opened). Is mainly different from the seedling transplanter 1. That is, the suction port 105 a faces the engine 20. In such a configuration, the blower 105 can more easily absorb the heat of the engine 20. Therefore, since a high temperature wind can be sent with a fertilizer, it can suppress efficiently that a fertilizer becomes a lump.

[Fourth Modification]
FIG. 8 is a side view of a seedling transplanter of a fourth modification of the first embodiment. FIG. 9 is a plan view of a seedling transplanter according to a fourth modification of the first embodiment. The seedling transplanter 1D of this modification has the same configuration as the seedling transplanter 1. However, the seedling transplanter 1 </ b> D of the present modification mainly differs from the seedling transplanter 1 in that it includes an assist pipe 130 positioned around the storage hopper 103. The assist pipe 130 is provided for each storage hopper 103. The assist pipe 130 is provided at substantially the same height as the hopper lid 104 or slightly above the hopper lid 104. The assist pipe 130 is fixed to the rear step 47, for example. The assist pipe 130 has a front side portion 130a positioned in front of the storage hopper 103 and a side portion 130b positioned closer to the center of the traveling vehicle body 2 in the left-right direction than the storage hopper 103, and is generally L-shaped. Configured. The assist pipe 130 is also referred to as a handrail or a protective member.

  In such a configuration, a passenger or an operator can get on and off the floor 40 and the rear step 47 by grasping the front side portion 130 a of the assist pipe 130. In addition, the assist pipe 130 can prevent an operator or the like from colliding with the storage hopper 103. Further, a fertilizer bag or the like can be hooked on the assist pipe 130.

[Second Embodiment]
FIG. 10 is a side view of the seedling transplanter of the second embodiment. FIG. 11 is a plan view of the seedling transplanter of the second embodiment. The seedling transplanter 1E of the present embodiment has the same configuration as the seedling transplanter 1. However, the seedling transplanter 1E of this embodiment is mainly different from the seedling transplanter 1 in the position where the loading assist device 110 is provided.

  In the present embodiment, the loading assist device 110 is at least partially located in front of the storage hopper 103 when viewed from above. Specifically, when the pair of support members 109 is viewed from above, at least one of the pair of support members 109 is positioned outside (side) the traveling vehicle body 2 in the left-right direction of the traveling vehicle body 2, A space (space) between the pair of support members 109 is positioned in front of the storage hopper 103. In the present embodiment, the pair of support members 109 are coupled to each other by the coupling member 115. The coupling member 115 is formed in a bar shape long in the left-right direction, and a plurality of coupling members 115 are provided between the pair of extending members 113. The plurality of coupling members 115 are provided at intervals in the front-rear direction.

  In the above configuration, when the pair of support members 109 is viewed from above, at least one of the pair of support members 109 is positioned outside the traveling vehicle body 2 in the left-right direction of the traveling vehicle body 2 and the pair of support members 109 is supported. Since the space between the members 109 is positioned in front of the storage portion 103, the pair of support members 109 can be prevented from hindering the movement of the operator on the traveling vehicle body 2. Therefore, it becomes easy for the operator to move on the traveling vehicle body 2, and workability is improved. In addition, since a space is formed below at least a portion between the pair of support members 109, the pair of support members 109 can move water or mud adhering to the material while the material is being transferred and transported by the loading assist device 110. Can be dropped into the field from between. This makes it difficult for water and mud to collect on the traveling vehicle body 2, and makes it easier for the operator to move on the traveling vehicle body 2. Further, since water and mud are less likely to stay on the traveling vehicle body 2, it is possible to reduce the time and labor required for the cleaning operation (mud removing operation) of the traveling vehicle body 2. Thereby, the labor which an operator spends is reduced.

[Third Embodiment]
FIG. 12 is a side view of the seedling transplanter of the third embodiment. FIG. 13 is a plan view of the seedling transplanter of the third embodiment. The seedling transplanter 1F of the present embodiment has the same configuration as the seedling transplanter 1. However, the seedling transplanter 1F of the present embodiment is mainly different from the seedling transplanter 1 in part of the configuration of the loading assist device 110.

  The loading assist device 110 according to the present embodiment includes a loading table 116, a driving motor 119 as a driving source, and a transport mechanism 120 in addition to the pair of supporting members 109 having the extending member 113 and the rotating body 114. doing. As an example, the loading table 116 is configured in a rectangular shape in plan view, and loads materials on the upper surface thereof. In the present embodiment, the support member 109 supports the material via the loading table 116. The loading table 116 is supported by the rotating body 114 of the pair of support members 109 so as to be movable in the front-rear direction. The loading table 116 is movable between the first position P1 and the second position P2. The first position P1 is a position in front of the storage hopper 103 and is closer to the front end portion of the traveling vehicle body 2. The second position P2 is a position closer to the storage unit 103 than when the loading table 116 is located at the first position P1. The loading table 116 is prevented from moving forward by contacting the stopper at the first position P1, and is prevented from moving backward by contacting the stopper at the second position P2. The transport mechanism 120 includes a rack 117 extending along the front-rear direction and a pinion 118 that meshes with the rack 117. The rack 117 is provided on the side surface of the extending member 113 as an example. The pinion 118 is provided on the loading table 116 together with the drive motor 119. The pinion 118 is rotationally driven by the drive motor 119 and moves the loading table 116 along the support member 109 (front-rear direction) by the power of the drive motor 119.

  In addition, the loading assist device 110 includes operation switches 121 and 122 that operate the drive motor 119. The operation switches 121 and 122 can perform forward / reverse rotation and stop operation of the drive motor 119. The operation switch 121 is an example of a first operation member, and the operation switch 122 is an example of a second operation member. The operation switch 121 is provided in the control unit 50. The operation switch 121 is located below the handle 52 and in front of the cockpit 55. The operation switch 121 is configured to be able to operate the left and right loading assist devices 100 independently. The operation switch 121 may be configured such that both the left and right loading assist devices 100 can be operated by the same operation. On the other hand, the operation switch 122 is provided for each loading assist device 100. The operation switch 122 can be provided, for example, on the front end portion of the extending member 113 or the loading table 116. The operation switch 122 is configured to allow operation of the corresponding loading assist device 100. Each of the operation switches 122 may be configured such that both the left and right loading assist devices 100 can be operated by the same operation, or may be configured such that the left and right loading assist devices 100 can be operated independently. Good.

  In the above configuration, the driving motor 119 can be operated by the operation switches 121 and 122 to move the loading table 116 in the front-rear direction, and the loading table 116 is moved between the first position P1 and the second position P2. Can be stopped. Here, the drive motor 119 may be operated on the condition that the transmission lever 54 is in the neutral position and the driving force is not transmitted to the wheels. Note that the operating condition of the drive motor 119 may be a condition in which the brake pedal 53 is locked in a state where the brake device is operated (locked state).

  In the present embodiment described above, the conveyance mechanism 120 moves the loading table 116 along the front-rear direction by the power of the driving motor 119, so that the material loaded on the loading table 116 is moved (conveyed) by the power of the driving motor 119. )can do. Thereby, since the worker can move the material toward the storage hopper 103 without pushing the material toward the storage hopper 103, the labor for loading the material into the storage hopper 103 can be saved. Can do.

  In the present embodiment, the operation switch 121 for operating the drive motor 119 is provided in the control unit 50, and the operation switch 122 for operating the drive motor 119 is provided in the loading assist device 100. Since the loading table 116 does not move unless the operation switch 121 or the operation switch 122 is operated, the loading table 116 can be prevented from moving against the operator's intention. Therefore, work safety is improved. Further, since the drive motor 119 can be operated by the operation switch 122 in addition to the operation switch 121, an operator who loads materials into the traveling vehicle body 2 from outside the field can operate the drive motor 119 by the operation switch 122. The operability of 119 is improved. This eliminates the need for the operator to move to the operation switch 121 in order to operate the drive motor 119, thereby reducing the labor of the operator.

[Fourth Embodiment]
FIG. 14 is a side view of the seedling transplanter of the fourth embodiment. FIG. 15 is a plan view of the seedling transplanter of the fourth embodiment. The seedling transplanter 1G of the present embodiment has the same configuration as the seedling transplanter 1F. However, the seedling transplanter 1G of the present embodiment is mainly different from the seedling transplanter 1F in part of the configuration of the loading assist device 110.

  The loading assist device 110 includes a weight sensor 123 as a weight detection unit. The weight sensor 123 is provided between the rear ends of the pair of support members 109 (the pair of extending members 113). The central portion of the loading table 116 located at the second position P2 is in contact with the upper end portion of the weight sensor 123. The weight sensor 123 can detect the weight of the loading platform 116 located at the second position P2. The weight sensor 123 detects the weight of the loading table 116 based on, for example, the amount of the upper end pushed down by the loading table 116. Here, as the material to be loaded is heavier, the center part of the loading table 116 is deformed so as to protrude downward, or as the material loaded on the loading table 116 is heavier, the rotating body 114 is deformed. The weight of the weight sensor 123 increases as the weight of the table 116 increases.

  FIG. 16 is a block diagram illustrating a configuration of the loading assist device according to the fourth embodiment. The seedling transplanter 1 </ b> G includes a control unit 125 that controls the loading assist device 110. For example, the control unit 125 may include a CPU (Central Processing Unit), a ROM (Read only memory), and a RAM (Random Access Memory). The control unit 125 is connected to a drive motor 119, operation switches 121 and 122, a weight sensor 123, and the like.

  FIG. 17 is a flowchart illustrating a conveyance process performed by the control unit of the fourth embodiment. With reference to FIG. 17, the carrying process of the loading table 116 will be described. Here, an example will be described in which materials are loaded on the loading platform 116 located at the first position P1, and the drive motor 119 is rotated forward by the operation switches 121 and 122. When the forward rotation operation of the drive motor 119 is performed by the operation switches 121 and 122, the control unit 125 starts the forward rotation of the drive motor 119 (step S1). Thereby, for example, the loading table 116 loaded with materials moves from the first position P1 toward the second position P2. The control unit 125 waits until the weight sensor 123 is in a detection state (No in step S2). Here, in the present embodiment, when the weight sensor 123 detects a weight that is equal to or greater than a specified value, the weight sensor 123 is in a detected state, and when the weight sensor 123 does not detect a weight that is equal to or greater than the specified value, the weight sensor 123 is in a non-detected state. It is. The specified weight is, for example, a weight heavier than the weight of the loading table 116 on which nothing is mounted. More specifically, the specified weight is, for example, a weight that is heavier than the weight of the loading table 116 on which nothing is mounted and is equal to or less than the weight of the loading table 116 loaded with a material having a specified weight.

  When the loading table 116 on which the material is loaded reaches the second position P2, and the weight sensor 123 detects a weight that is equal to or greater than the specified value, that is, when the weight sensor 123 enters a detection state (Yes in step S2), the control unit 125 stops the drive motor 119 (step S3). As a result, the loading platform 116 stops at the second position P2.

  Next, the control unit 125 waits until the weight sensor 123 enters a non-detection state (No in step S4). When the material is removed from the loading platform 116 located at the second position P2, and the weight sensor 123 no longer detects a weight exceeding the specified value, that is, when the weight sensor 123 is not detected (Yes in step S4). ), The control unit 125 returns the loading table 116 to the original first position P1 (step S5). Specifically, the control unit 125 reversely rotates the drive motor 119 to move the loading table 116 from the second position P2 to the first position P1. When the loading table 116 reaches the first position P1, the loading table 116 comes into contact with the stopper and stops. At this time, if the control unit 125 detects an overload state of the drive motor 119 due to a change in the current value of the drive motor 119 or a decrease in the rotation speed of the motor, the control unit 125 stops the drive motor 119.

  In the present embodiment described above, the control unit 125 controls the drive motor 119 to move the loading platform 116 from the first position P1 to the second position P2, and the weight sensor 123 increases the weight more than the specified value. If detected, the drive motor 119 is stopped. Therefore, even if the operator does not perform an operation to stop the loading table 116 at the second position P2, the loading table 116 that has loaded a material and has become more than a specified weight is automatically stopped at the second position P2. Can do. In addition, when the weight sensor 123 no longer detects a weight exceeding the specified value, the control unit 125 drives the drive motor 119 to move the loading platform 116 from the second position P2 to the first position P1. Even if the operator does not move the loading table 116 to the first position P1, the loading table 116 whose material has been removed and has a weight less than the specified value can be automatically returned to the first position P1. Therefore, the work efficiency of the loading work is improved.

[Fifth Embodiment]
FIG. 18 is a plan view of the seedling transplanter of the fifth embodiment. The seedling transplanter 1H of the present embodiment has the same configuration as the seedling transplanter 1F. However, the seedling transplanter 1H of the present embodiment is mainly different from the seedling transplanter 1F in that only one loading assist device 110 is provided.

  In the present embodiment, as an example, a shift lever 54 that is a traveling operation member that performs an operation related to traveling of the traveling vehicle body 2 is provided in either one of the left and right portions of the control unit 50. In the example of FIG. 18, the speed change lever 54 is provided in the right part (right part) of the control unit 50. The loading assist device 110 and the operation switch 122 are provided on the opposite side (the left side in FIG. 18) to the one (the right side in FIG. 18) of the left and right sides of the control unit 50 where the transmission lever 54 is provided. ing.

  In the present embodiment described above, the control unit 50 has the speed change lever 54 on either one of the left and right sides of the control unit 50, and the operation switch 122 has a speed change lever on both sides in the left and right direction of the control unit 50. By being provided on the side opposite to the one provided with 54, it is possible to prevent the operator's hand from contacting the speed change lever 54 when the operator operates the operation switch 122. Thereby, it can suppress that the traveling vehicle body 2 accelerates / decelerates rapidly, it is suppressed that the traveling vehicle body 2 moves outside a farm field, and the efficiency of the material loading operation | work at the field edge improves. Further, it is possible to prevent the worker from hitting the speed change lever 54 during the work.

  As mentioned above, although embodiment and the modification of this invention were illustrated, the said embodiment and modification are an example to the last, Comprising: It is not intending limiting the range of invention. These embodiments and modifications can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the spirit of the invention. In addition, specifications (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) of each configuration, shape, display element, etc. are changed as appropriate. Can be implemented.

DESCRIPTION OF SYMBOLS 1,1A-1H ... Seedling transplanter 2 ... Traveling vehicle body 40 ... Floor 41b ... Opening part 50 ... Steering part 54 ... Shift lever (traveling operation member)
60 ... Seedling planting part 103 ... Storage hopper (storage part)
DESCRIPTION OF SYMBOLS 109 ... Support member 110 ... Loading assistance apparatus 113 ... Extension member 114 ... Rotating body 116 ... Loading stand 119 ... Drive motor (drive source)
120: Transport mechanism 121 ... Operation switch (first operation member)
122 ... Operation switch (second operation member)
123 ... Weight sensor (weight detector)
125: control unit P1: first position P2: second position

Claims (7)

A traveling vehicle body (2) that has a floor (40) and travels in a farm field, a seedling planting part (60) that is attached to a rear portion of the traveling vehicle body (2) and that seeds seedlings in the farm field, and the traveling vehicle body ( 2) a pair of storage portions (103) that are provided on both sides of the rear portion of the traveling vehicle body (2) in the left-right direction and store the granular material; and the traveling vehicle body (2 ), At least a part of the traveling vehicle body (2) is positioned forward of the storage unit (103) in the front-rear direction of the traveling vehicle body (2), and controls the traveling vehicle body (2); A loading assist device (110) that is provided on at least one side of the steering portion (50) in the direction and supports the material movably toward the storage portion (103);
The loading assist device (110) includes:
A pair of extending members fixed to the floor (40) and extending along the front-rear direction;
A plurality of rotating bodies (114) provided to be spaced apart from each other in the front-rear direction and rotatably supported by the extending member and supporting the material are provided, and the material is also supported by the upper surface of the extending member. A seedling transplanter characterized by that.   The loading assist device (110) is provided above the floor (40), extends along the front-rear direction, and is positioned at a distance from each other in the left-right direction to support the material ( 109), and the floor (40) is located below the pair of support members (109), and the opening (41b) penetrates the floor (40) in the vertical direction of the traveling vehicle body (2). The seedling transplanter according to claim 1, wherein the seedling transplanter is provided.   The loading assist device (110) includes a pair of support members (109) extending along the front-rear direction and spaced from each other in the left-right direction to support the material, and the pair of support members When (109) is viewed from above, at least one of the pair of support members (109) is positioned outside the traveling vehicle body (2) in the left-right direction of the traveling vehicle body (2), and The seedling transplanter according to claim 1, wherein a space between the pair of support members (109) is located in front of the storage portion (103).   The loading assist device (110) is supported by the pair of support members (109) so as to be movable along the front-rear direction, a loading table (116) for loading the material, a drive source (119), A transport mechanism (120) that moves the loading platform (116) along the front-rear direction by the power of the drive source (119), and the support member (109) moves the loading platform (116). The seedling transplanting machine according to claim 2 or 3, wherein the material is supported through the seedling.   A weight detection unit (123); and a control unit (125), wherein the loading platform (116) includes a first position (P1) ahead of the storage unit (103) and the first position. It is movable between the second position (P2) closer to the storage part (103) than when it is located at (P1), and the weight detection part (123) is located at the second position (P2). The control unit (125) controls the drive source (119) to move the loading table (116) from the first position (P1). When it is moved to the second position (P2) and the weight detector (123) detects a weight that exceeds the specified value, the drive source (119) is stopped, and the weight detector (123) exceeds the specified value. When the weight is not detected, the driving source (119) is driven to load the load (116) seedling transplantation machine according to claim 4, characterized in that moving to the first position (P1) from said second position (P2) a.   A first operating member (121) that is provided in the control unit 50 and operates the drive source (119), and is provided in the loading assist device (110) and operates the drive source (119). The seedling transplanter according to claim 4 or 5, comprising a second operating member (122).   The control unit (50) includes a travel operation member (54) that performs an operation related to travel of the traveling vehicle body (2) in either one of the left and right portions of the control unit (50). The member (122) is provided on a side opposite to the one on which the travel operation member (54) is provided on both sides in the left-right direction of the control unit (50). Seedling transplanter.