JP2019106936A - Work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work vehicle capable of improving workability. A traveling vehicle body and a fertilizer application device 40 are provided. The traveling vehicle body can travel in the field. The fertilizer application device 40A sprays fertilizer sent from a hopper unit 41 having a plurality of storage hoppers 42 that store fertilizers side by side in the left-right direction to the field. Further, the fertilizer application device 40A includes a charging unit 45. The charging unit 45 charges the fertilizer supplied from one end in the left-right direction to each of the plurality of storage hoppers 42 of the hopper unit 41 while transporting the fertilizer toward the other end in the left-right direction. [Selection diagram] Fig. 2

Description

  The present invention relates to a work vehicle.

  Conventionally, in a work vehicle such as a seedling transplanting machine, it is known to equip the rear of the fuselage with a fertilization device that applies fertilizer to the field. Such a fertilization apparatus is provided along with the left-right direction of a fuselage, and there are some which are provided with a plurality of storage hoppers which store fertilizer in each (for example, refer to patent documents 1).

JP, 2016-67303, A

  However, in the conventional work vehicle as described above, since the plurality of storage hoppers are aligned in the left-right direction of the machine body, when loading the fertilizer into each storage hopper, the worker has a heavy fertilizer bag It is necessary to throw in fertilizer while moving on the aircraft. Further, in this case, the worker needs to move in the left-right direction of the machine across, for example, a seat (pilot seat) provided in front of the fertilization apparatus. As described above, in the conventional work vehicle, the workability is lowered due to the low inputability of the fertilizer in the fertilizer application device.

  This invention is made in view of the above, Comprising: It aims at providing the working vehicle which can improve workability.

  In order to solve the problems described above and to achieve the object, the work vehicle (1) according to claim 1 is provided at a traveling vehicle body (2) capable of traveling in a field and at the rear of the traveling vehicle body (2) , And a fertilizing device (40) for spraying fertilizer (F) sent from a hopper unit (41) having a plurality of storage hoppers (42) for storing fertilizer (F) respectively, side by side in the lateral direction; The fertilization device (40) transports the fertilizer (F) supplied from any one end in the left-right direction toward the other end in the left-right direction while the plurality of hopper units (41) It is characterized in that it is provided with a loading section (45, 46) to be loaded into each of the storage hoppers (42).

  The work vehicle (1) according to claim 2 is the work vehicle (1) according to claim 1, wherein the hopper unit (41) is pivoted about a pivot shaft (44) along the left-right direction. A cover (43) for opening and closing the upper surface openings (42a) of the plurality of storage hoppers (42), and the insertion section (45) is provided on the back surface (43a) of the cover (43) A conveyer (451) for conveying the fertilizer (F) from either one end in the left-right direction toward the other end with the lid (43) open, and the conveyance of the conveyer (451) The fertilizer (F) which is provided on the transport path (451a) to block a part of the path (451a) and which is transported by the transport conveyor (451) is directed to the upper surface opening (42a) to transport the transport path ( 451a) A plurality of dropouts by a predetermined amount stepwise from above Characterized in that it comprises a Setsuban (453).

  The work vehicle (1) according to claim 3 is the work vehicle (1) according to claim 1, wherein the hopper unit (41) is pivoted about a pivot shaft (44) along the left-right direction. And a lid (47) for opening and closing the upper surface opening (42a) of the plurality of storage hoppers (42), and the insertion portion (46) is the upper surface opening (42a) of the plurality of storage hoppers (42) , And conveys the fertilizer (F) from either one end in the left-right direction toward the other end, and has a conveyer (461) which drops off a predetermined amount stepwise in a stepwise manner.

  The work vehicle (1) according to claim 4 is the work vehicle (1) according to claim 3, wherein the lid (47) is formed at an end in one of the left and right directions. 471).

  The work vehicle (1) according to claim 5 is the work vehicle (1) according to any one of claims 1 to 4, wherein the hopper unit (41) includes the plurality of storage hoppers (42). It is characterized in that a plurality is arranged side by side in the left and right direction so as to be arranged in the left and right direction.

  The work vehicle (1) according to claim 6 is the work vehicle (1) according to any one of claims 1 to 5, wherein the traveling vehicle body (2) is located in front of the fertilization device (40). And a floor step (7) formed in the area including the floor step (7) is equivalent to the upper surface opening (42a) of the plurality of storage hoppers (42) at least in the front area of the fertilization device (40). It is characterized in that it can be raised and lowered to a height.

  According to the first aspect of the present invention, by supplying the fertilizer to the feeding portion, the plurality of storage hoppers arranged in the left-right direction are arranged from the one arranged in the left-right direction to the other end. Fertilizer is introduced in order until it is placed. That is, by supplying the fertilizer from any one end in the left-right direction, the fertilizer is introduced into each of the plurality of storage hoppers aligned in the left-right direction. In addition, since it is sufficient to put the fertilizer in one of the left and right directions in the operation of putting the fertilizer into each storage hopper, it is not necessary for the operator to put the fertilizer while moving in the left and right direction on the machine body. As described above, according to such a configuration, the operability of fertilizer application can be improved because the fertilizer inputability to a plurality of storage hoppers is enhanced.

  According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, in a state in which the lid is opened, either one of the left and right directions of the transport conveyor provided on the back surface of the lid By supplying fertilizer to the end, the fertilizer is transported from one side to the other in the left-right direction. At this time, the fertilizer transported by the transport conveyor is dropped from the transport path stepwise by a predetermined amount by the plurality of partition plates, and from the one disposed on one end side in the left-right direction with respect to the plurality of storage hoppers It is thrown in one by one until the one placed on the side. As a result, the ease with which the fertilizer can be introduced to the plurality of storage hoppers can be enhanced, and the workability can be improved.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1, the fertilizer is supplied in the left-right direction by supplying the fertilizer onto the transport conveyor from any one end in the left-right direction. It is transported from one to the other. At this time, the fertilizer transported by the transport conveyor is dropped off from the transport conveyor in stages, and from the one disposed on one end side in the left-right direction to the one disposed on the other end with respect to the plurality of storage hoppers It is thrown in in order. As a result, the ease with which the fertilizer can be introduced to the plurality of storage hoppers can be enhanced, and the workability can be improved.

  According to the fourth aspect of the invention, in addition to the effect of the third aspect of the invention, the fertilizer can be introduced with the lid closed. Thereby, for example, the fertilizer can be introduced into the plurality of storage hoppers without wetting the fertilizer in the operation at the time of rainy weather.

  According to the invention set forth in claim 5, in addition to the effects of the invention set forth in any one of claims 1 to 4, for example, the fertilizer is applied to many lines such as 4 lines, 6 lines and 8 lines. It can correspond also to the type to do.

  According to the invention of claim 6, in addition to the effect of the invention according to any one of claims 1 to 5, when a plurality of storage hoppers are charged with fertilizer, a fertilizer which is a heavy material in general There is no need for the operator to lift the bag. As a result, the ease with which the fertilizer can be introduced to the plurality of storage hoppers can be enhanced, and the workability can be improved.

FIG. 1 is a schematic left side view showing a work vehicle. FIG. 2: is a schematic perspective view (the 1) which shows an example of a fertilization apparatus. FIG. 3: is a schematic perspective view (the 2) which shows an example of a fertilization apparatus. FIG. 4: is a schematic perspective view (the 1) which shows the other example of a fertilization apparatus. FIG. 5: is a schematic perspective view (the 2) which shows the other example of a fertilization apparatus. FIG. 6 is a schematic perspective view showing the floor step. FIG. 7 is an explanatory view of the rising operation of the floor step. FIG. 8 is a schematic perspective view showing the lifting and lowering structure of the floor step. FIG. 9 is a schematic perspective view showing the restriction structure after the floor step is lifted. FIG. 10 is a schematic perspective view showing the arrangement of handrails. FIG. 11 is (a) a schematic front view showing the left handrail, (b) a schematic plan view showing the left handrail, and (c) a schematic right side view showing the left handrail. FIG. 12 is (a) a schematic front view showing the handrail on the right side, (b) a schematic plan view showing the handrail on the right side, and (c) a schematic left side view showing the handrail on the right side. FIG. 13 is a schematic perspective view showing the marker holding structure of the handrail. FIG. 14 is a schematic left side view showing a sun visor and an antenna stay. FIG. 15 is a schematic perspective view showing an antenna stay. FIG. 16 is an explanatory view of a side guard. FIG. 17 is an explanatory view of a tilting structure of the side guard. FIG. 18 is an explanatory view of a longitudinal adjustment structure of the side guard. FIG. 19 is an explanatory view of the upper and lower adjustment structure of the side guard. FIG. 20 is a schematic left side view showing the arrangement of the fuel tank. FIG. 21 is a schematic plan view showing the arrangement of the fuel tank. FIG. 22 is a schematic perspective view showing a cap coating structure of the fuel tank. FIG. 23 is a schematic left side view showing a seedling rail. FIG. 24 is a schematic bottom view showing a seedling rail. FIG. 25 is a schematic perspective view showing a stay of the seedling rail. FIG. 26 is a schematic perspective view showing a smooth transfer structure of the seedling rail. FIG. 27 is a schematic left side view showing the smooth conveyance structure of the seedling rail. FIG. 28 is a schematic perspective view showing another example of the smooth transfer structure of the seedling rail.

  Hereinafter, embodiments of a work vehicle disclosed in the present application will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited by the embodiments described below.

<Overall Configuration of Work Vehicle (Seedling Transfer Machine) 1>
The entire configuration of a work vehicle (seedling transplanting machine) 1 according to the embodiment will be described with reference to FIG. 1. FIG. 1 is a schematic left side view showing a work vehicle (seedling transplanting machine) 1. In addition, below, as a working vehicle 1 which concerns on embodiment, the seedling transplanting machine which transplants a seedling on the surface soil surface (圃 scene) of a farmland is demonstrated to an example, drive | working a farmland.

  Further, in the following description, the front-rear direction is the traveling direction when the seedling transplanting machine 1 which is the work vehicle travels straight, and the front side in the traveling direction is defined as “front” and the rear side as “rear”. . The traveling direction of the seedling transplanting machine 1 is a direction from the pilot seat 9 to the steering handle 10, which will be described later, when going straight on (see FIG. 1).

  The left-right direction is a direction orthogonal to the front-rear direction. In the following, right and left are defined toward the "front" side. That is, with the operator (also referred to as a pilot) seated at the pilot seat 9 and facing forward, the left hand side is “left” and the right hand side is “right”. Also, the vertical direction is the vertical direction. The longitudinal direction, the lateral direction, and the vertical direction are orthogonal to one another.

  Note that these directions are defined for the sake of convenience to make the explanation easy to understand, and the present invention is not limited by these directions. Moreover, below, the seedling transplanting machine 1 may be pointed out and it may be called an "body."

  As shown in FIG. 1, the seedling transplanting machine 1 includes a traveling vehicle body 2 capable of traveling in a field. The traveling vehicle body 2 includes a pair of left and right front wheels 3 and a pair of left and right rear wheels 4. The traveling vehicle body 2 is, for example, four-wheel drive driven by the front wheel 3 and the rear wheel 4. At a rear portion of the traveling vehicle body 2, a seedling planting unit 30 which is vertically driven by a lifting device 20 is provided.

  The traveling vehicle body 2 includes a main frame 5 as an airframe, an engine provided on the main frame 5, and a power transmission device 6 for transmitting power generated by the engine to a drive wheel and a seedling planting unit 30. That is, the motive power generated by the engine which is the motive power source is used not only to move the traveling vehicle body 2 forward or backward but also to drive the seedling planting unit 30.

  The engine is disposed at a central portion of the traveling vehicle body 2 in the left-right direction at a position projecting upward above a floor step 7 on which a worker who gets on the traveling vehicle body 2 places a foot. As an engine, for example, a heat engine such as a diesel engine or a gasoline engine is used. The floor step 7 is provided at the front of the traveling vehicle body 2 in the front-rear direction. The floor step 7 is provided from the front end of the traveling vehicle body 2 to the rear of the engine.

  The floor step 7 is mounted on the main frame 5. At least a part of the floor step 7 in the vicinity of the operator's seat 9, which will be described later, is formed in a grid in plan view so that mud and the like attached to shoes and the like of the worker can be dropped in the field. At the rear of the floor step 7, a rear step 7a (see FIG. 6) that doubles as a fender of the rear wheel 4 may be provided.

  In this case, the rear steps 7a are disposed on the left and right sides of the engine so as to sandwich the engine in the left-right direction. The engine is also covered by an engine cover 8. A pilot seat 9 is provided above the engine cover 8. The rear step 7a in the floor step 7 is provided so as to be able to move up and down. The lifting and lowering structure of the rear step 7a will be described later with reference to FIGS.

  The power transmission device 6 includes a belt type power transmission device to which power is transmitted from the engine, a hydraulic continuously variable transmission which is a transmission that shifts power transmitted from the engine via the belt type power transmission device, and a transmission. And a case.

  The hydraulic continuously variable transmission is, for example, a hydrostatic continuously variable transmission called HST (Hydro Static Transmission). The hydraulic continuously variable transmission can change the output (rotational speed) and the output direction (rotational direction) by operating the main shift lever. That is, the hydraulic continuously variable transmission can change the forward / rearward traveling or the traveling speed of the traveling vehicle body 2 by changing the rotational speed or the rotational direction.

  The transmission case is provided with a transmission that transmits power from an engine shifted by a hydraulic continuously variable transmission to each part. The transmission case includes an auxiliary transmission mechanism that switches the traveling speed at the time of traveling or work. The transmission case can switch the traveling speed of the traveling vehicle body 2 to, for example, a traveling speed higher than the traveling speed at the time of planting work, a seedling planting speed at the time of planting work, etc. It is.

  As shown in FIG. 1, the traveling vehicle body 2 includes a pilot seat 9 on the floor step 7. The control seat 9 is a seat on which a worker is seated at the time of operation. The traveling vehicle body 2 is provided with a steering handle 10 and a planting lift lever 11 in front of the driver's seat 9. The steering handle 10 is provided on a hood 12 described later, and steers the traveling vehicle body 2 by being operated by an operator. The planting lift lever 11 is a clutch lever and is provided on the bonnet 12 and operated to raise and lower the seedling planting unit 30 and to start and stop planting of the seedlings by the seedling planting unit 30.

  The traveling vehicle body 2 also includes a main shift lever and an auxiliary shift lever. The main shift lever (HST lever) is a lever operated when moving the traveling vehicle body 2 forward and backward and changing the traveling speed. The auxiliary shift lever is a lever operated when switching the traveling speed of the traveling vehicle body 2 to a speed according to the place (field or road) where the vehicle is traveling.

  The traveling vehicle body 2 includes a bonnet 12 in front of the driver's seat 9. The bonnet 12 is provided to project upward from the floor step 7 and is covered by the front cover 12 a. The bonnet 12 is provided with a display unit (meter panel). The display unit has a display surface that is inclined backward so as to face the operator who is seated at the cockpit 9 and faces the front.

  For example, a marker sensor for detecting that the left and right markers 13 for drawing a line as a guide for going straight on the side of the machine are out, for example, "planting", for example, the planting lift lever 11 Planting lever position sensor that detects the operation position of the planting lift lever 11, and a fertilizer out sensor that detects that the amount of fertilizer stored in the storage hopper 42 of the fertilizing device 40 described later has fallen below a predetermined amount. The information from various sensors such as a fertilizer clogged sensor which detects that the fertilizer sent from the storage hopper 42 clogged the supply path is displayed.

  As shown in FIG. 1, the seedling transplanting machine 1 includes a lifting device 20 and a seedling planting unit 30. The lifting device 20 comprises a lifting link 21. The elevating link 21 is a parallel link that connects the rear part of the traveling vehicle body 2 and the planting planting unit 30, and vertically pivots with respect to the link frame at the rear of the traveling vehicle body 2 and the seedling planting unit 30. By freely connecting, the seedling planting unit 30 is vertically connected to the traveling vehicle body 2.

  The lifting device 20 also includes a hydraulic lifting cylinder 22. The raising and lowering cylinder 22 is extended and contracted by operating the planting raising and lowering lever 11 and switching the hydraulic valve. The raising and lowering cylinder 22 drives the raising and lowering link 21 by expanding and contracting to raise and lower the seedling planting unit 30. That is, the raising and lowering cylinder 22 is moved to the non-working position where the seedling planting unit 30 is raised and the ground working position (planting position) where the seedling planting unit 30 is lowered by the planting raising and lowering lever 11 being operated. Switch.

  The seedling planting unit 30 is attached to the rear of the traveling vehicle body 2 via the elevating link 21 as described above. For example, the seedling planting unit 30 can plant seedlings in a plurality of rows (rows). The seedling planting unit 30 includes a seedling platform 31, a float 32, and a planting device 33.

  The seedling placement table 31 has a seedling placement surface for the number of planting strips in the left-right direction of the machine body. Each seedling mounting surface is a downward sloped surface on which a plurality of soiled mat seedlings can be mounted in the vertical direction. The float 32 is leveled while sliding on the overhead scene as the traveling vehicle body 2 moves. The float 32 includes, in the left-right direction of the airframe, a center float disposed at the center of the airframe, and a side float disposed outside in the left-right direction across the center float. The seedling transplanting machine 1 may be provided with a leveling device such as a leveling rotor.

  Each float (center float and side float) of the float 32 is rotatably attached to the traveling vehicle body 2 so that the front part moves up and down according to the unevenness of the boat scene. The planting device 33 detects, for example, the vertical movement of the center float with a rotation sensor for angle of attack control. In the seedling planting unit 30, the vertical movement of the front part of the center float is detected by the rotation sensor at the time of planting operation, and the hydraulic valve controls the expansion and contraction operation of the elevating cylinder 22 by the control unit according to the detection result of the rotation sensor. To raise and lower the seedling planting unit 30 to adjust the planting depth of the seedling.

  The planting device 33 is disposed below the seedling platform 31 by being supported by the planting support frame of the seedling platform 31. The planting device 33 plants the seedlings placed on the seedling platform 31 in the field. The planting device 33 includes an implanter, a rotary case, and a planting transmission case. In the case of the planting cane, seedlings are taken from the mat seedlings placed on the seedling placement table 31 and are planted in a mulberry scene. The implantation rod is rotatably connected to the planting transmission case.

  The rotary case rotatably supports the implantation rod and is rotatably connected to the planting transmission case. The rotary case is provided with an unequal speed transmission mechanism capable of rotating the implanter while changing the rotational speed of the implanter. The implantation rod rotates while changing the rotation speed according to the rotation angle with respect to the rotary case. The planting transmission case transmits the power transmitted from the engine to the seedling planting unit 30 to the implanter.

  As shown in FIG. 1, the seedling transplanting machine 1 includes a fertilization device 40. Fertilization apparatus 40 is an apparatus which spreads a fertilizer on a field. In the seedling transplanting machine 1, while the seedlings are planted in the field by the seedling planting unit 30, fertilizers are dispersed in the field by the fertilization device 40. The fertilizer application device 40 is provided above the rear of the traveling vehicle 2 and behind the pilot seat 9. The fertilizer application device 40 includes a hopper unit 41 and a lid 43.

<Example of Fertilizer 40 (fertilizer 40A)>
Next, an example (fertilization apparatus 40A) of the fertilization apparatus 40 is demonstrated with reference to FIG. 2 and FIG. 2 and 3 are each a schematic perspective view showing an example of the fertilizing device 40 (fertilizing device 40A). In addition, the conveyance state of the fertilizer F in the insertion part 45 is shown in FIG. In the seedling transplanting machine 1 (see FIG. 1), the fertilizing device 40A sprays granular fertilizers F stored in the plurality of storage hoppers 42 to the field by a set amount. In addition, the fertilization apparatus 40A can perform what is called variable fertilization which adjusts the amount of fertilization which is a spread amount of the fertilizer F by providing the fertilization amount adjustment motor etc. which were connected to the control part.

  As shown in FIG. 2, the fertilizing apparatus 40A includes a hopper unit 41 and a feeding unit 45. The hopper unit 41 has a plurality of storage hoppers 42 provided side by side in the left-right direction of the machine body in a state of being installed in the seedling transplanting machine 1 (see FIG. 1). The plurality of storage hoppers 42 store fertilizers F (see FIG. 3) input from the upper surface openings 42a. In the illustrated example, the hopper unit 41 is one in which two storage hoppers 42 are integrally formed. A plurality of (two) hopper units 41 are arranged in the left-right direction such that two storage hoppers 42 arranged in the left-right direction are further arranged in the left-right direction. In the illustrated example, two hopper units 41 are arranged in series in the left-right direction, and two hopper units 41 are integrally formed.

  The hopper unit 41 further includes a lid 43. The lid portion 43 is provided rotatably around a pivot shaft 44 provided along the left-right direction at the rear of the top surface opening 42a (of the plurality of storage hoppers 42) in each hopper unit 41. The lid 43 may be pivotably connected to the storage hopper 42 by, for example, a hinge. When a hinge is used, the pivot shaft 44 is the axis of the hinge. The lid 43 closes the upper surface opening 42 a in a closed state, and opens the upper surface opening 42 a in an open state, that is, in a state of being rotated backward. In the illustrated example, two lids 43 are arranged side by side in the left-right direction, and two lids 43 are integrally formed.

  The input unit 45 is provided on the back surface 43 a of the lid 43. The input unit 45 transports the fertilizer F, which is supplied from any one end in the left-right direction, toward the other end in the left-right direction with the lid 43 opened. In the illustrated example, in the hopper unit 41 disposed on the left side (right side in the left-right direction) in the figure, as shown by the arrow A1, the right end (one end) to the left end (the other end) Transport the fertilizer F toward the end). Further, in the hopper unit 41 disposed on the right side (left side in the left-right direction) in the figure, as shown by the arrow A2, the left end (one end) to the right end (the other end) Transport the fertilizer F towards the The feeding unit 45 feeds the fertilizer to each of the plurality of storage hoppers 42 while transporting the fertilizer F.

  According to this configuration, by supplying the fertilizer F to the feeding portion 45, the plurality of storage hoppers 42 arranged in the left-right direction are arranged from the one arranged in the left-right direction to the other end side Fertilizer F is introduced in order until That is, the fertilizer F is supplied to each of the plurality of storage hoppers 42 aligned in the left-right direction by supplying the fertilizer F from any one end in the left-right direction. Further, in the operation of injecting the fertilizer F into each of the storage hoppers 42, it is sufficient to throw the fertilizer F in one of the left and right directions, so it is not necessary for the operator to throw the fertilizer F while moving in the left and right direction on the machine body. In addition, there is no need for the operator to move in the lateral direction across the pilot seat 9. Thus, since the input property of the fertilizer F with respect to the some storage hopper 42 in the fertilization apparatus 40 (fertilization apparatus 40A) improves, workability | operativity can be improved.

  Moreover, the type (multi-row planting in which the fertilizer F is applied to multiple lines such as four lines, six lines, and eight lines, for example, by arranging the plurality (two) hopper units 41 in line in the left-right direction. It can correspond to the type) aircraft.

  As shown in FIG. 2, the input unit 45 includes a conveyer 451, a motor 452, a partition 453, and an angle adjustment device 454. The conveyer 451 is a belt conveyer which conveys the to-be-conveyed object on the belt surface which becomes the conveyance path 451a by being driven by the motor 452 which is a drive source in a predetermined direction. The transport conveyor 451 is provided on the back surface of the lid 43, and transports the fertilizer F (see FIG. 3) from either end in the left-right direction toward the other end with the lid 43 opened. .

  A plurality (two) of partition plates 453 are provided on the transport path 451 a of the transport conveyor 451. The partition plate 453 is provided to block a part of the conveyance path 451a without contacting the belt surface forming the conveyance path 451a. The two partition plates 453 have different lengths in the width direction (front-rear direction) of the transport path 451a. For example, in hopper unit 41 positioned on the left side (right side in the left-right direction) in the figure, partition plate 453 has a left end that is the other end rather than the right end that is one end is the front-rear direction Long. In the hopper unit 41 positioned on the right side (left side in the left-right direction) in the figure, for example, the partition plate 453 has a right end that is the other end rather than the left end that is one end. Long in the front and back direction.

  The partition plate 453 blocks the transfer of the fertilizer F (see FIG. 3) on the transfer path 451a, thereby transferring the fertilizer F transferred by the transfer conveyor 451 to the upper surface openings 42a of the plurality of (two) storage hoppers 42. A predetermined amount is dropped from the top of the conveyance path 451a.

  The angle adjustment device 454 is a device that adjusts the rotation angle of the lid 43. The angle adjustment device 454 includes, for example, a potentiometer for detecting the rotation angle. The angle adjustment device 454 can adjust the inclination angle of the conveyance path 451 a of the conveyance conveyor 451 by adjusting the rotation angle (opening degree) of the lid 43. Thus, the inclination angle of the conveyance path 451a can be adjusted according to the conveyance state of the fertilizer F by the conveyance conveyor 451. For example, when the fall of the fertilizer from the conveyance path 451a is bad, the inclination is made steep. , Uniform input of fertilizer F is possible.

  As shown in FIG. 3, in the fertilizing apparatus 40A, either end of the feeding portion 45 in the left-right direction (in the case of the left side in the left direction, the case of the left end in the left direction) The fertilizer F introduced from the right end portion is transported by the transport conveyor 451 toward the other end in the left-right direction on the transport path 451a. In the illustrated example, in the fertilizing apparatus 40A, part of the fertilizer F is blocked by the first partition plate 453 from being transported, dropped out from the transport path 451a, and is thrown into the storage hopper 42 on one end side. Further, part of the fertilizer F not blocked by the first partition plate 453 is blocked by the second partition plate 453 from being conveyed, and drops out of the conveyance path 451a and the storage hopper 42 on one end side and The other end side storage hopper 42 is charged. Further, the fertilizer F which is not blocked by the second partition plate 453 is blocked by the side plate of the lid 43 from being transported, dropped out from the transport path 451a, and is thrown into the storage hopper 42 on the other end side.

  According to this configuration, the fertilizer F is supplied by supplying the fertilizer F to any one end of the transport conveyor 451 provided on the back surface 43a of the lid 43 in the left-right direction with the lid 43 opened. It is transported from one side to the other in the left-right direction. At this time, the fertilizer F transported by the transport conveyor 451 is dropped from the transport path 451 a by a predetermined amount in a stepwise manner by the plurality (two) of partition plates 453, and The components are sequentially inserted from one disposed on one end side in the left-right direction to one disposed on the other end side. As a result, the ability to input fertilizer to the plurality of (two) storage hoppers 42 can be enhanced, and the workability can be improved.

<Another Example of Fertilizer 40 (fertilizer 40B)>
Next, another example (fertilization apparatus 40B) of the fertilization apparatus 40 will be described with reference to FIGS. 4 and 5. FIGS. 4 and 5 are each a schematic perspective view showing another example of the fertilizing device 40 (fertilizing device 40B). 4 shows a state in which the cover 47 is opened, and FIG. 5 shows a state in which the cover 47 is closed. Moreover, in the other example (fertilization apparatus 40B) of the fertilization apparatus 40 demonstrated below, the code | symbol same as the fertilization apparatus 40A mentioned above or the same location may be attached | subjected, and description may be abbreviate | omitted.

  As shown in FIG. 4, the fertilizing apparatus 40 </ b> B includes a hopper unit 41 and a feeding unit 46. The two feeding units 46 are provided back to back on the upper surface openings 42 a of the plurality of storage hoppers 42 so as to be symmetrical in the left-right direction. The feeding unit 46 transports the fertilizer F, which has been fed to the central portion in the left-right direction, from either end in the left-right direction toward the other end. In the illustrated example, in the insertion portion 46 on the left side (right side in the left-right direction) in the figure, as shown by the arrow B1, from the left end which is one end in the left-right direction to the other end Transport the fertilizer F toward the right end. Further, in the insertion portion 46 on the right side (left side in the left-right direction) in the figure, as shown by arrow B2, the right end which is one end in the left-right direction to the left end which is the other end Transport the fertilizer F towards the

  The input unit 46 includes a conveyer 461 and a motor 463. The transfer conveyor 461 includes a plurality of (five) conveyors 462 a to 462 e having different lengths in the transfer direction (left and right direction) of the fertilizer F. The plurality of conveyors 462a to 462e are arranged in parallel in the width direction (longitudinal direction) of the conveyance conveyor 461, and the conveyance path 461a of the fertilizer F is formed by the belt surfaces of the plurality of conveyors 462a to 462e. In the illustrated example, the plurality of conveyors 462a to 462e have the first conveyor 462a disposed at the frontmost side in the front-rear direction, and the second conveyor 462b, the third conveyor 462c, and the fourth conveyor 462d on the rear side of the first conveyor 462a. The fifth conveyor 462 e is disposed at the rearmost position in the order.

  Among the first to fifth conveyors 462a to 462e, the third conveyor 462c disposed at the center in the front-rear direction is the shortest. Among the first to fifth conveyors 462a to 462e, the first conveyor 462a on the foremost side in the front-rear direction and the fifth conveyor 462e on the rear side have the same length and are the longest. In addition, the second conveyor 462b and the fourth conveyor 462d disposed on the front and rear sides of the third conveyor 462c have the same length, are longer than the third conveyor 462c, and are longer than the first conveyor 462a and the fifth conveyor 462e. Too short. The lengths of the first to fifth conveyors 462a to 462e are appropriately set such that the fertilizer F is uniformly input to the plurality of storage hoppers 42.

  One motor 463 which is a driving source of the transfer conveyor 461 is provided for one input unit 46. That is, the motor 463 is a common drive source of the first to fifth conveyors 462a to 462e. The motor 463 drives the first conveyer 462a and the fifth conveyer 462e by rotating the common drive shaft 464 of the first conveyer 462a and the fifth conveyer 462e, thereby rotating the driven shafts sequentially, thereby The third conveyor 462 c, the second conveyor 462 b, and the fourth conveyor 462 d are driven. The first to fifth conveyors 462a to 462e drop the fertilizer F from the transport path 461a by a predetermined amount stepwise while transporting the fertilizer F in the left-right direction.

  According to this configuration, the fertilizer F is supplied from one of the left and right ends onto the transport path 461a of the transport conveyor 461 to each of the input portions 46, whereby the fertilizer F is transferred from one side to the other in the left and right direction. It is transported towards. At this time, the fertilizers F conveyed by the plurality of conveyors (first to fifth conveyors) 462a to 462e of the conveyance conveyor 461 are dropped from the conveyance path 461a in a stepwise manner, and the plurality of storage hoppers 42 It is thrown in in order from what was arrange | positioned at the one end side of the direction to the thing arrange | positioned at the other end side. Thereby, the input property of the fertilizer F with respect to the some storage hopper 42 improves, and it can improve workability.

  The hopper unit 41 also includes a lid 47. The lid portion 47 is provided rotatably around a pivot shaft 44 provided along the left-right direction at the rear of the upper surface opening 42a (of the plurality of storage hoppers 42) in each hopper unit 41. The lid 47 may be rotatably connected to the storage hopper 42 by a hinge, for example. When a hinge is used, the pivot shaft 44 is the axis of the hinge. The lid portion 47 closes the upper surface opening 42a in a closed state, and opens the upper surface opening 42a in an open state, that is, in a state of being rotated backward. In the illustrated example, two lids 47 are arranged side by side in the left-right direction, and two lids 47 are integrally formed.

  As shown in FIG. 4, the lid 47 includes an inlet 471. The insertion port 471 is formed at either one end in the left-right direction of the lid 47 (right end in the case of the left side in the left-right direction, or left end in the case of the right side in the left-right direction). Ru. Thereby, the fertilizer F can be supplied to the conveyance upstream side in the insertion part 46. As shown in FIG. In the illustrated example, since the lid portion 47 is common to the plurality (two) of the hopper units 41, one insertion port 471 is formed common to the plurality (two) of the hopper units 41. Ru.

  As shown in FIG. 5, the feeding port 471 may be configured such that a receiving portion (fundus) 48 for receiving the fertilizer bag FB is attached when supplying the fertilizer F to the feeding portion 46.

  According to this configuration, the fertilizer F can be input while the lid 47 is closed. Thereby, for example, the fertilizer F can be introduced into the plurality of storage hoppers 42 of each hopper unit 41 without wetting the fertilizer F in the operation at the time of rainy weather.

  The conveyer 461 of the loading unit 46 may be rotatably provided like the lid 47. In this case, the transport conveyor 461 is preferably configured to be rotatable with the motor 463 attached. Thereby, for example, the accessibility to the plurality of storage hoppers 42 of each hopper unit 41 can be improved.

Lifting structure of floor step 7 (rear step 7a)
Next, the lifting and lowering structure of the floor step 7 (rear step 7a) will be described with reference to FIGS. FIG. 6 is a schematic perspective view showing the floor step 7 (rear step 7a). FIG. 7 is an explanatory view of the raising operation of the floor step 7 (rear step 7a). FIG. 8 is a schematic perspective view showing the lifting and lowering structure of the floor step 7 (rear step 7a). FIG. 9 is a schematic perspective view showing the restriction structure after the ascent of the floor step 7 (rear step 7a). As shown in FIG. 6, the floor step 7 is horizontally formed in a region including both side portions in the left-right direction of the engine cover 8 and the front cover 12 a in the traveling vehicle body 2. The floor step 7 may be a foothold of the worker when the worker performs an operation such as supplying the fertilizer F to the fertilizer application device 40 on the airframe.

  As shown in FIGS. 6 and 7, the floor step 7 is formed in an area including the front of the fertilizing device 40. The floor step 7 is provided to be able to ascend to the same height as the upper surface opening 42 a of the storage hopper 42 of the hopper unit 41 at least in the front area (rear step 7 a) of the fertilizing device 40. In the illustrated example, a part of the rear step 7a is provided to be able to ascend. As a result, the fertilizer F can be injected without the operator lifting the fertilizer bag FB. Further, the rear step 7a is formed with a concave fitting portion 7c into which the portion (lifting portion 7b) to be raised and lowered can be fitted so as to be flush with the lowered state. Thereby, when a worker moves fertilizer bag FB to a raising / lowering part, since there is no part which protruded, movement of fertilizer bag FB becomes smooth. In addition, about the raising / lowering structure which raises / lowers the raising / lowering part 7b, it mentions later using FIG.

  According to this configuration, when the fertilizer F is put into the plurality of storage hoppers 42, the worker does not need to lift the fertilizer bag FB, which is generally a heavy load. Thereby, the input property of the fertilizer F with respect to the some storage hopper 42 improves, and it can improve workability.

  In addition, the rear step 7a is formed in a slope shape that becomes a gentle upward slope from the horizontal portion 7d (see FIG. 6) which is the front area of the rear step 7a in the floor step 7 toward the rear. Thereby, when a worker moves fertilizer bag FB on floor step 7, movement of fertilizer bag FB becomes smooth.

  As shown in FIG. 6, when raising and lowering the lifting and lowering portion 7b, the lifting and lowering portion 7b is lifted by the operator depressing the operation pedal 51 provided at the rear step 7a rearward. Further, when the operator stops depressing the operation pedal 51 and the operation pedal 51 returns to the front, the elevating part 7b descends and returns to the original height.

  As shown in FIG. 8, the lifting and lowering structure for lifting and lowering the lifting and lowering portion 7 b includes the operation pedal 51, the fulcrum portion 52, the link portion 53, and the stopper portion 54 described above. The operation pedal 51 is provided at the tip of the L-shaped support member 511. The proximal end of the support member 511 is fixed to a link component 531 of the link 53 described later by welding or the like. The operation pedal 51 is supported by the support member 511 so as to protrude above the rear step 7a. The operation pedal 51 moves rearward as indicated by the arrow C1 by the operator's depression operation. In addition, when the operation pedal 51 is ahead, the raising / lowering part 7b is falling. That is, when the operation pedal 51 is on the front side, the elevating part 7b is in the insertion part 7c (see FIG. 6) of the rear step 7a. When the operation pedal 51 is at the rear, the elevation unit 7b is elevated.

  Here, the elevating part 7b of the rear step 7a (see FIG. 6) is supported by supporting members 7e such as pipes provided on both sides in the left-right direction along the front-rear direction. The support member 7e also serves as a reinforcing member of the elevation unit 7b. The left and right support members 7e form both side surfaces in the left-right direction of the elevation unit 7b. The fulcrum portion 52 is provided on each of the support member 7 e of the elevating portion 7 b and the rear portion (projecting portion) 5 a of the main frame 5. The fulcrum portion 52 connects the link portion 53 so as to be extensible and contractible in the vertical direction between the elevating portion 7 b and the projecting portion 5 a of the main frame 5. The fulcrum portion 52 includes a hole (long hole) 521 serving as a front fulcrum in the front-rear direction and a hole 522 serving as a rear fulcrum. The fulcrum portion 52 forms a link fulcrum for raising and lowering the elevating portion 7 b by connecting (inserting) the link component 531 of the link portion 53 to the long hole 521 and the hole 522.

  The long holes 521 are respectively provided at the same position in the vertical direction on the front sides of the side surfaces in the left-right direction of the elevation unit 7 b and on the front sides of the side surfaces in the left-right direction of the protrusion 5 a of the main frame 5. The long hole 521 is a long hole in the front-rear direction, and forms a movable fulcrum that moves in the front-rear direction. The holes 522 are respectively provided at the same position in the vertical direction on the rear sides of the side surfaces in the left-right direction of the elevation unit 7 b and on the rear sides of the side surfaces in the horizontal direction of the protrusion 5 a of the main frame 5. The hole 522 is a circular hole and forms a fixed fulcrum.

  The link portion 53 is provided in a pair on the left and right. The link portion 53 includes a U-shaped link component 531 in which both ends of the rod are bent at a right angle. The link component 531 has one end 532 inserted into the elongated hole 521 serving as the front fulcrum of the fulcrum 52, and the other end 533 inserted through the hole 522 serving as the rear fulcrum of the fulcrum 52. The link component 531 is rotatably connected to the long hole 521 by the one end 532 being inserted into the long hole 521, and is inserted into the hole 522 by the other end 533 being inserted. It is rotatably connected to 522. The link component 531 crosses two at each of the left and right, and two are rotatably connected at the intersection 534.

  In the link component 531, a retaining pin 535 is attached to one end 532 and the other end 533 which are inserted into the long hole 521 and the hole 522. The retaining pin 535 regulates (retains) the end portions 532 and 533 inserted into the long hole 521 and the hole 522. In addition, the stopper portion 54 has a restriction structure for stopping the lifting and lowering portion in the lifting position after lifting and lowering the lifting and lowering portion. The restriction structure of the stopper portion 54 will be described later with reference to FIG.

  As shown in FIG. 8, when the operation pedal 51 is depressed by the operator and moved rearward (in the direction indicated by the arrow C1), one of the support members 511 disposed on the right in the lateral direction is fixed. One end 532 (movable fulcrum) of the link component 531 is pushed and moved rearward (in the direction indicated by the arrow C2). In conjunction with the movement of the one end 532 of the one link component 531, the one end 532 (movable fulcrum) of the other link component also moves rearward (in the direction indicated by the arrow C2). The other end 533 of the link component 531 is a fixed fulcrum so that the position is rotated as it is.

  The two link components 351 disposed on the right in the left-right direction rotate the one end 532 while moving the one end 532 rearward, thereby raising the right side of the elevating part 7b. As the right side of the elevating part 7b ascends, the left side of the elevating part 7b ascends. As the left side of the elevating part 7b ascends, the link component 531 disposed on the left in the left-right direction interlocks to raise the left side of the elevating part 7b in an auxiliary manner.

  As shown in FIG. 9, the stopper portion 54 includes an operation portion 541, a hole portion 542, a restricting portion 543, and a biasing portion 544. The operation portion 541 is a rod-like member, and one end thereof is bent upward. That is, the operation unit 541 is formed in an L shape. The bent portion of the operation portion 541 protrudes above the rear step 7a (see FIG. 6) and functions as an operation lever. The hole 542 is formed below the long hole 521 in the protrusion 5 a of the main frame 5 (see FIG. 8), and the operation portion 541 is inserted therethrough. The restricting portion 543 is a plate member having a substantially right triangle, and is provided at the other end of the operation portion 541. The restricting portion 543 is fixed to the other end of the operation portion 541 by welding or the like. The biasing portion 544 is provided between the operation portion 541 and the protrusion 5 a. The biasing portion 544 is, for example, a torque spring, and always biases the operation portion 541 to rotate in the direction opposite to the operation direction (the direction indicated by the arrow C3), that is, forward.

  In the stopper portion 54, when one end 532 of the link component 531 is moved to the rear of the long hole 521 by raising the elevating part 7b (see FIG. 8), the one end 532 acts as a restricting part 543. The end portion 532 is restricted from moving forward, that is, returning, by pressing the side portion 543a on the rear side. When one end 532 moves rearward, the one end 532 resists the biasing force of the biasing portion 544 and moves while pushing down the oblique side 543 b of the regulating portion 543.

  In order to release the restriction in the stopper portion 54, the bent end of the operation portion 541 is rotationally operated rearward (in the direction indicated by the arrow C3) against the biasing force of the biasing portion 544. The operation unit 541 rotates as indicated by an arrow C31, and the restriction unit 543 rotates downward as indicated by an arrow C32. Thus, one end 532 of the link component 531 can move forward.

<Left and right handrails 61, 62>
Next, the left and right handrails 61 and 62 will be described with reference to FIGS. FIG. 10 is a schematic perspective view showing the arrangement of the handrails 61 and 62. As shown in FIG. 11A is a schematic front view showing the handrail 61 on the left side, FIG. 11B is a schematic plan view showing the handrail 61 on the left side, and FIG. 11C is a schematic right side view showing the handrail 61 on the left side. 12A is a schematic front view showing the handrail 62 on the right side, FIG. 12B is a schematic plan view showing the handrail 62 on the right side, and FIG. 12C is a schematic left side view showing the handrail 62 on the right side. FIG. 13 is a schematic perspective view showing the marker holding structure of the handrail 61 (62).

  As shown in FIG. 10, in the seedling transplanting machine 1, both lateral sides of the rear step 7a disposed in front of the fertilizing device 40, which is the rear of the floor step 7 of the traveling vehicle body 2 and is near the fertilizing device 40. May be provided with handrails 61 and 62 provided respectively. By arranging the handrails 61 and 62 on the left and right in the vicinity of the fertilizer application device 40, when the operator supplies fertilizer on the rear step 7a, the handrails 61 and 62 on the left and right function as fences. , You can prevent the operator from falling from the aircraft.

  As shown in FIG. 11, when viewed from the right side of the machine, the left handrail 61 has front and rear legs 612a and 612b at both ends of the handrail main body 611 formed in a U shape in right side view. Provided. The front leg 612a is shorter than the rear leg 612b because it is attached to the outside of the rear step 7a (see FIG. 10). In the handrail 61 on the left side, a rectangular reinforcing plate 613 is provided on the handrail main body 611. A notch 613a is formed on the upper side of the reinforcing plate 613, and a small hole 613b is formed below the notch 613a. The notches 613a and the small holes 613b of the reinforcing plate 613 constitute a marker holding structure described later.

  As shown in FIG. 12, when viewed from the left side of the machine, the right handrail 62 has front and rear legs 622a and 622b at both ends of a handrail main body 621 formed in a U shape in left side view. Provided. The front leg 622a is shorter than the rear leg 622b because it is attached to the outside of the rear step 7a (see FIG. 10). Further, the rear side leg 622b is offset to the left, which is the inside of the machine with the handrail 62 installed, in plan view, than the front side leg 622a. Further, in the handrail 62 on the right side, a rectangular reinforcing plate 623 is provided on the handrail main body 621. A notch 623a is formed on the upper side of the reinforcing plate 623 and a small hole 623b is formed below the notch 623a. The notches 623a and the small holes 623b of the reinforcing plate 623 constitute a marker holding structure to be described later, similarly to the above-described handrail 61 on the left side.

  The left handrail 61 is spaced from the rear step 7a by the front and rear legs 612a and 612b, so that interference with the storage hopper 42 (see FIG. 10) of the fertilizing device 40 can be prevented. Similarly, the right handrail 62 is also spaced apart from the rear step 7a by the front and rear legs 622a and 622b, so that interference with the storage hopper 42 of the fertilizing device 40 can be prevented. In addition, since the handrail 62 on the right side is offset to the inside of the vehicle as it goes rearward, for example, it does not interfere with the fertilizer delivery handle of the fertilizing device 40 disposed on the right side of the vehicle.

  In addition, the left and right handrails 61 and 62 both have a marker holding structure that holds the tip (water wheel) of the marker 13 when the marker 13 is not used. Here, the marker holding structure will be described with reference to FIG. In the following, the marker holding structure in the handrail 61 on the left side will be described, and the marker holding structure in the handrail 62 on the right side will be omitted because it is the same as the handrail 61 on the left side. As shown in FIG. 13, the marker holding structure in the handrail 61 on the left side is configured by the notches 613 a and the small holes 613 b of the reinforcing plate 613 as described above. The clip 63 is attached to the small hole 613 b of the reinforcing plate 613. In the marker holding structure, in the marker 13, the rod 131 is fixed by the clip 63 attached to the small hole 613 b in a state where the bent portion 131 a of the rod 131 is inserted into the notch 613 a. As described above, the marker 13 can be prevented from being lost by storing the marker 13 when not in use in the machine.

<Antenna stay 73>
Next, the antenna stay 73 will be described with reference to FIGS. 14 and 15. FIG. 14 is a schematic left side view showing the sun visor 70 and the antenna stay 73. As shown in FIG. FIG. 15 is a schematic perspective view showing the antenna stay 73. As shown in FIG. As shown in FIG. 14, in the seedling transplanting machine 1, there may be a case in which the traveling vehicle body 2 is provided with a sun visor 70 in order to protect the worker operating the fuselage from direct sunlight. The sun visor (also referred to as a roof) 70 is supported, for example, by frames 71 extending upward from the left and right side portions of the traveling vehicle body 2 so as to be positioned above the pilot seat 9 and the steering wheel 10.

  At the top of the sun visor 70, for example, an antenna 72 for measuring the position of the traveling vehicle 2 in the straight-ahead assist mode is attached. The antenna 72 is, for example, a Global Navigation Satellite System (GNSS) antenna, and receives, measures, and measures radio waves from a navigation satellite orbiting the sky.

  In the vicinity of the steering wheel 10 (e.g., the front), there may be provided a straight-line assist monitor that displays information for assisting the straight-line assistance to the operator in the straight-line assist mode. In this case, a stay for mounting the rectilinear assist monitor (a rectilinear assist monitor stay) is provided with the bonnet 12 and the high mount monitor stay 74 as a fulcrum. As a result, even if the sun visor 70 is added as an option, the space for the straight-line assist monitor is secured, and the straight-line assist monitor can be used as before. In addition to supporting the rectilinear assist monitor stay at the bonnet 12 at two points, the rectilinear assist monitor stay may be configured to be locked from the left side using the high mount monitor stay 74 as a fulcrum. Also, for example, a stay for attaching a general purpose monitor may be additionally provided on the right side of the rectilinear assist monitor stay.

  As shown in FIG. 14, an antenna stay 73 for supporting the antenna 72 is provided at the top of the sun visor 70. The antenna stay 73 is preferably provided so that the antenna 72 is positioned on the center line L which is the center of the front wheel 3 in the left-right direction and the center of the traveling vehicle body 2. In this case, it is more preferable that the antenna stay 73 support the antenna 72 so as to be positioned at a height of 2650 mm (h = 2650 mm), for example.

  As shown in FIGS. 14 and 15, the antenna stay 73 includes a frame portion 731, an antenna mounting portion 732, a side plate 733, and an attaching portion 734. The frame portion 731 is a frame extending in the left-right direction. The antenna mounting portion 732 is provided at the center of the frame portion 731 in the left-right direction. The antenna mounting portion 732 mounts the antenna 72 and fixes the mounted antenna 72. The side plates 733 are respectively provided at the left and right ends of the frame portion 731. At lower portions of the left and right side plates 733, extending portions 733a extending in the left-right direction so as to approach each other are provided. The mounting portion 734 is a rectangular plate-like member, and is provided at the tip of the extending portion 733 a of the left and right side plates 733. The mounting portion 734 is formed with a small hole 734 a through which a screw or the like is inserted for mounting to the sun visor 70. As described above, by mounting the antenna stay 73 on the sun visor 70, the antenna 72 can be disposed at a desired position (including the height) on the sun visor 70.

<Side guard 81>
Next, the side guard 81 will be described with reference to FIGS. 16 to 19. FIG. 16 is an explanatory view of the side guard 81. As shown in FIG. FIG. 17 is an explanatory view of the tilting structure of the side guard 81. As shown in FIG. FIG. 18 is an explanatory view of a longitudinal adjustment structure of the side guard 81 (81A). FIG. 19 is an explanatory view of the upper and lower adjustment structure of the side guard 81 (81B). Note that FIG. 16 shows a schematic left side view of the traveling vehicle body 2. FIG. 17 is an enlarged view of part D in FIG. The tilting structure of the side guard 81 is shown in FIG. Further, FIG. 18 shows a schematic perspective view of the longitudinal adjustment structure of the side guard 81 (81A), and FIG. 19 shows a schematic perspective view of the longitudinal adjustment structure of the side guard 81 (81B).

  As shown in FIG. 16, in the seedling transplanting machine 1, side guards 81 may be provided on both sides of the traveling vehicle body 2 for preventing the operator from falling down. The side guard 81 is provided to be tiltable so that the main body extends outward in the left-right direction. The side guard 81 has a tilting structure at a base end portion 81 a which is an attachment portion to the traveling vehicle body 2. As shown in FIG. 17, the tilting structure of the side guard 81 includes a side guard receiving portion 82. The side guard receiving portion 82 is a cylindrical member with a bottom, and in the case of the side guard receiving portion 82 on the left side, for example, a slit 83a along the vertical direction is formed on the outer peripheral surface 83 on the left side. It is formed.

  As shown in FIG. 17, the side guard receiving portion 82 for receiving the base end 81a of the side guard 81 main body is in a state where the main body is upright when the main body (base end 81a) is moving forward. Hold. As the side guard receiving portion 82 moves the main body (the base end 81a) backward (in the direction indicated by the arrow E1), the base end 81a enters the slit 83a so that the main body is shown by the arrow E2. To the outside (left side). Thus, the side guard 81 can be used as a stand for tilting the main body and placing the fertilizer F (see FIG. 7) by being provided to be tiltable. Moreover, a container can be arrange | positioned to the inclined main body and the residual fertilizer discharged | emitted from the fertilization apparatus 40 (refer FIG. 1) can be received. It is also possible to use the tilted body as a seat.

  Further, the side guard 81 (81A) may have a longitudinal adjustment structure for adjusting the position in the longitudinal direction. As shown in FIG. 18, the longitudinal adjustment structure of the side guard 81 </ b> A includes a side guard receiving portion 84. The side guard receiving portion 84 is configured such that a plurality of cylindrical receiving portions 84 a through which the base end portions 81 a of the side guards 81 A are inserted are arranged in the front-rear direction. In the longitudinal adjustment structure, the base end 81a is attached to the side guard receiving portion 84 by replacing the receiving portion 84a, thereby changing the position in the front-rear direction and arranging the main body. Thus, in the side guard 81A, the side guard 81A can be disposed, for example, in accordance with the figure of the worker by being provided so as to be adjustable in the front-rear direction.

  Further, the side guard 81 (81B) may have a vertical adjustment structure for adjusting the position in the vertical direction. As shown in FIG. 19, the vertical adjustment structure of the side guard 81B includes a plurality of small holes 85 formed in the longitudinal direction at the proximal end portion 81a of the main body. In the vertical adjustment structure, by inserting a fastener such as a screw through any of the plurality of small holes 85, the position in the vertical direction is changed to arrange the main body. Thus, the side guard 81B can be arranged up and down so that the side guard 81B can be arranged, for example, in accordance with the figure of the worker.

<Cap covering structure of fuel tank 91>
Next, the cap covering structure of the fuel tank 91 will be described with reference to FIGS. FIG. 20 is a schematic left side view showing the arrangement of the fuel tank 91. As shown in FIG. FIG. 21 is a schematic plan view showing the arrangement of the fuel tank 91. As shown in FIG. FIG. 22 is a schematic perspective view showing a cap covering structure of the fuel tank 91. As shown in FIG. FIG. 20 shows the left side of the seedling transplanting machine 1 (traveling car body 2), and FIG. 21 shows the plane of the seedling transplanting machine 1 (traveling car body 2).

  As shown in FIGS. 20 and 21, the fuel tank 91 is disposed on the floor step 7 of the traveling vehicle body 2 and below the cockpit 9. The fuel tank 91 is surrounded by an engine cover 8 which is a base of the driver's seat 9. The fuel tank 91 has a filler port closed by a cap 92. Further, as shown in FIGS. 20 to 22, a hole 93 and a lid 94 are provided on the upper surface of the engine cover 8. The hole 93 and the lid 94 are located on the top surface of the engine cover 8 directly above the cap 92 of the fuel tank 91. The lid 94 exposes the cap 92 from the hole 93 in an open state. As described above, the seedling transplanting machine 1 has a cap covering structure that can be exposed only at the time of use, such as when the cap 92 of the fuel tank 91 is supplied, and can cover the cap 92 when not in use. According to such a cap covering structure, it is possible to prevent water from entering the fuel tank 91 from the cap 92 at the time of car washing or the like.

<Seedling rail 100>
Next, the seedling rail 100 will be described with reference to FIGS. FIG. 23 is a schematic left side view showing the seedling rail 100. As shown in FIG. FIG. 24 is a schematic bottom view showing the seedling rail 100. As shown in FIG. FIG. 25 is a schematic perspective view showing the stay 105 of the seedling rail 100. As shown in FIG. FIG. 26 is a schematic perspective view showing a smooth transfer structure of the seedling rail 100 (100A). FIG. 27 is a schematic left side view showing a smooth transfer structure of the seedling rail 100 (100A). FIG. 28 is a schematic perspective view showing another example of the smooth transfer structure of the seedling rail 100 (100A).

  The seedling transplanting machine 1 (see FIG. 1) is provided with a spare seedling placing table (referred to as a seedling rail) 100 for placing a seedling for replenishment on at least one of the left and right of the front of the floor step 7 (see FIG. 1). There is a case. The seedling rail 100 is rotatably supported by a support shaft (vertical axis) protruding from the floor step 7. The seedling rail 100 can be freely rotated, for example, by the operator's hand. As shown in FIGS. 23 and 24, the seedling rail 100 includes, for example, a front seedling frame 101 and a rear seedling frame 102. The seedling rail 100 may have three or more seedling frames lined up in a state where the seedling frames are arranged in series.

  As shown in FIGS. 22 and 23, a plurality of (two) rollers are provided at the rear of the seedling transfer surface 101a of the front seedling frame 101 and at the front (tip) of the seedling transfer surface 102a of the rear seedling frame 102. 103 are provided side by side in the left-right direction. In each roller 103, the direction of the rotation shaft 103a is provided orthogonal to the conveyance direction (front-rear direction) of the seedlings (mat seedlings). That is, the plurality of rollers 103 are arranged in parallel on the seedling transfer surfaces 101a and 102a. Thus, the roller 103 is provided at the rear of the front seedling frame 101 and at the tip of the rear seedling frame 102 so that the seedlings on the seedling transfer surface 101a, 102a are covered from the front seedling frame 101 to the rear seedling frame 102. When conveyed from front to back, the seedlings are always positioned on the roller 103, the conveyance load of the seedlings is reduced, and the seedlings can be smoothly conveyed.

  Further, each roller 103 is provided so as to protrude from the seedling conveyance surface 101a, 102a by the same extent (for example, 7 mm) as the height of the stopper 104 for restricting the conveyance so as not to pass the seedling excessively. In this manner, each roller 103 protrudes upward from the seedling transfer surface 101a, 102a, so that the contact portion of the seedling being transferred is reduced, the load of transferring the seedling is reduced, and the smooth transfer of the seedling is possible. Become. It is preferable that the seedling rail 100, that is, the front seedling frame 101 and the rear seedling frame 102 be configured to be retrofittable to a conventional seedling frame. By setting it as this structure, when the weight of a seedling is light, for example, the seedling rail 100 can be removed and a conventional thing can be used.

  As shown in FIG. 25, in the seedling rail 100, a stay 105 may be provided below the seedling transfer surface 102a of the rear seedling frame 102. The stay 105 is provided slidably in the front-rear direction, and can draw a predetermined amount d (d = 100 to 200 mm) toward the rear of the rear seedling frame 102. Thus, by providing the stay 105 so as to be drawn out, the seedling rail 100 can be brought closer to the worker. Thereby, the handling property of the seedling rail 100 can be improved.

  Further, as shown in FIG. 25, the rear end portion of the stay 105 is bent in a U-shape. The bent portion becomes the handle portion 105 a when the stay 105 is pulled backward. In addition, it is preferable that the standup of the handle portion 105a is set to the same height as the rear seedling frame 102. As described above, by aligning the rising of the handle portion 105a with the height of the rear seedling frame 102, the worker can easily take fertilizer.

  As shown in FIG. 26, in the seedling rail 100 (100A), the seedling transfer surface (for example, the seedling transfer surface 101a) of at least one of the front and rear seedling frames (for example, the front seedling frame 101). ) May have a structure for smoothly conveying the seedlings (smooth conveyance unit 106). The smooth conveyance unit 106 includes an operation unit 107, a roller unit 108, and a link unit 111. The operation part 107 is a rod-like operation lever, and is provided along the front-rear direction on the outer side of the front seedling frame 101. The operation unit 107 can swing up and down.

  The roller unit 108 includes a roller support member 109 and a roller 110. The roller support member 109 is a rod-like member, and is provided to extend in the left-right direction orthogonal to the operation portion 107 from the base end portion of the operation portion 107. The roller support member 109 is pivoted about the axis as the operation unit 107 pivots. The roller 110 is rotatably supported by the roller support member 109. A plurality of (two) rollers 110 are provided side by side in the axial direction of the roller support member 109. A plurality of (two) roller portions 108 are provided along the transport direction (front-rear direction).

  The link portion 111 is a rod-like member, and connects the plurality of roller portions 108. The smooth conveyance unit 106 rotates the roller support member 109 of the roller unit 108 around the axis by pushing the operation unit 107 downward. Further, in the smooth conveyance portion 106, the roller 110 rotates around the roller support member 109 as the fulcrum of the roller support member 109 rotates and projects onto the seedling conveyance surface 101a.

  In the smooth conveyance unit 106, since the roller 110 is a storage type, for example, when conveying the seedling box SB, the operation is performed when conveying the fertilizer bag FB which is stored under the seedling conveyance surface 101a and contains the fertilizer F. Smooth transport is possible by causing the roller 110 to project onto the seedling transport surface 101 a by the operation of the portion 107. Moreover, although there may be a case where the fertilizer bag FB is placed on the seedling box SB and transported, the seedling box SB is unlikely to slip relative to the resinous seedling transfer surface 101a. Even in such a case, smooth transport can be achieved by projecting the roller 110 onto the seedling transport surface 101a.

  Further, as shown in FIG. 27, the smooth conveyance unit 106 is a roller on the rear side of the roller 110 on the front side when the operation unit 107 is operated to project the roller 110 among the roller units 108 aligned in the front and rear direction. It is preferable that 110 be configured to have a smaller amount of protrusion. According to this configuration, the transported object such as the seedling box SB transported to the roller 110 is transported in a state in which the front end side (rear side) in the transport direction is lowered, so that the transport load can be further reduced. .

  In addition, it is good also as a structure which has the smooth conveyance part 206 as shown in FIG. 28 as another example of the smooth conveyance structure in the seedling rail 100 (100A). The smooth conveyance unit 206 includes a slide pin 210 extending in the conveyance direction, instead of the roller 110 in the smooth conveyance unit 106. Further, the slide pin 210 is also a storage type like the roller 110 described above, and protrudes on the seedling conveyance surface 101a (see FIG. 26) by the operation of the operation unit 207. Also with this configuration, for example, slide pin 210 is stored under seedling transfer surface 101a when transporting seedling box SB (see FIG. 26) and slide pin 210 when transporting fertilizer F (see FIG. 26). By projecting the seedling onto the seedling conveyance surface 101a, smooth conveyance is possible.

  Further, also in the smooth transport portion 206, when the slide pins 210 out of the slide pins 210 aligned in the front and rear direction, the amount of protrusion of the slide pins 210 on the rear side is smaller than that of the slide pins 210 on the front side. It is preferable to be configured. According to this configuration, the transported object such as the seedling box SB transported to the slide pin 210 is transported in a state in which the front end side (rear side) in the transport direction is lowered, so the transport load can be further reduced. it can.

  Further effects and modifications can be easily derived by those skilled in the art. Thus, the broader aspects of the invention are not limited to the specific details and representative embodiments represented and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

1 Work vehicle (seedling transplanter)
2 driving vehicle body 3 front wheel 4 rear wheel 5 main frame 5a rear (protrusion)
6 Power Transmission Device 7 Floor Step 7a Rear Step 7b Lifting Part 7c Inserting Part 7d Horizontal Part 7e Support Member 8 Engine Cover 9 Pilot Seat 10 Steering Handle 11 Planting Lifting Lever 12 Bonnet 12a Front Cover 13 Marker 20 Lifting Device 21 Lifting Link 22 Lifting cylinder 30 Seedling planting section 31 Seedling platform 32 Float 33 Planting device 40 Fertilization device 40A Fertilization device 40B Fertilization device 41 Hopper unit 42 Storage hopper 42a Top opening 43 Lid portion 43a Back surface 44 Pivot shaft 45 Loading portion 451 Conveying conveyor 451a Conveying path 452 Motor 453 Partition plate 454 Angle adjustment device 46 Loading part 461 Conveying conveyor 461a Conveying path 462a 1st conveyor 462b 2nd conveyor 462c 3rd conveyor 462d 4th conveyor 62e fifth conveyor 463 motor 464 drive shaft 47 lid 471 inlet 48 receiving 51 operating pedal 511 supporting member 52 fulcrum 521 holes (elongated holes)
522 hole 53 link portion 531 link component 532 one end 533 other end 534 crossing portion 535 retaining pin 54 stopper portion 541 operating portion 542 hole portion 543 regulating portion 543 a side portion 543 b oblique side portion 544 biasing portion 61 left side Handrail 611 Handrail main body 612a Front leg 612b Rear leg 613 Reinforcement plate 613a Notch 613b Small hole 62 Right hand rail 621 Handrail main body 622a Front leg 622b Rear leg 623 Reinforcement plate 623a Notch 623b Small Hole 63 clip 70 Sun visor 71 frame 72 antenna 73 antenna stay 731 frame portion 732 antenna mounting portion 733 side plate 733 a extension portion 734 mounting portion 734 a small hole 81 side guard 81 A side guard 81 A side guard 81 a base end Part 82 Side guard receiving part 83 Outer circumferential surface 83a Slit 84 Side guard receiving part 84a Receiving part 85 Small hole 91 Fuel tank 92 Cap 93 Hole part 94 Cover part 100 Seedling rail 101 Front seedling frame 101a Seedling conveying surface 102 Rear side seedling frame 102a Seedling transport surface 103 Roller 103a Rotor shaft 104 Stopper 105 Stay 105a Handle 106 Smooth transport unit 107 Operation unit 108 Roller unit 109 Roller support member 110 Roller 111 Link unit 206 Smooth transport unit 207 Operation unit 210 Slide pin F Fertilizer FB Fertilizer bag SB Seedling box

Claims (6)

With a traveling car body that can travel in the field,
And a fertilizing device for spraying fertilizers sent from a hopper unit having a plurality of storage hoppers, which are provided at the rear of the traveling vehicle body and which respectively store fertilizers in line in the left-right direction,
The fertilization device is
It is characterized by further comprising a charging portion for charging the fertilizer supplied from any one end in the left-right direction to each of the plurality of storage hoppers of the hopper unit while conveying it toward the other end in the left-right direction. Work vehicle to be. The hopper unit is
A lid portion which is pivoted about a pivot axis along the left-right direction to open and close the top surface openings of the plurality of storage hoppers;
The input unit is
A conveyer which is provided on the back surface of the lid, and transports the fertilizer from either one end in the left-right direction toward the other end with the lid opened;
A plurality of partitions provided on the transport path so as to block part of the transport path of the transport conveyor, and allowing the fertilizer transported by the transport conveyor to gradually drop off the transport path by a predetermined amount toward the upper surface opening. The work vehicle according to claim 1, comprising: a plate. The hopper unit is
A lid portion which is pivoted about a pivot axis along the left-right direction to open and close the top surface openings of the plurality of storage hoppers;
The input unit is
The conveyor is provided at the upper surface opening of the plurality of storage hoppers, and conveys the fertilizer from either one end in the left-right direction toward the other end, and drops a predetermined amount at a time in a stepwise manner. The work vehicle according to claim 1. The lid is
The work vehicle according to claim 3, further comprising: an inlet formed at either one end in the left-right direction. The hopper unit is
The work vehicle according to any one of claims 1 to 4, wherein a plurality of the storage hoppers are arranged side by side in the left-right direction so as to be arranged in the left-right direction. The traveling vehicle body is
A floor step formed in an area including the front of the fertilizing device;
The floor step is
The work vehicle according to any one of claims 1 to 5, wherein the work vehicle is provided so as to be capable of moving up and down to a height equivalent to the top surface opening of the plurality of storage hoppers at least in the front area of the fertilization device.

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