WO2023120154A1 - Paddy field work machine - Google Patents

Paddy field work machine Download PDF

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Publication number
WO2023120154A1
WO2023120154A1 PCT/JP2022/044866 JP2022044866W WO2023120154A1 WO 2023120154 A1 WO2023120154 A1 WO 2023120154A1 JP 2022044866 W JP2022044866 W JP 2022044866W WO 2023120154 A1 WO2023120154 A1 WO 2023120154A1
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WO
WIPO (PCT)
Prior art keywords
frame
attached
floor
body frame
paddy field
Prior art date
Application number
PCT/JP2022/044866
Other languages
French (fr)
Japanese (ja)
Inventor
大西哲平
Original Assignee
株式会社クボタ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社クボタ filed Critical 株式会社クボタ
Publication of WO2023120154A1 publication Critical patent/WO2023120154A1/en

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C11/00—Transplanting machines
    • A01C11/02—Transplanting machines for seedlings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/04—Arrangement or mounting of internal-combustion or jet-propulsion units with the engine main axis, e.g. crankshaft axis, transversely to the longitudinal centre line of the vehicle

Definitions

  • the present invention relates to a paddy field work machine such as a ride-on rice transplanter and a ride-on direct seeder.
  • a seedling planting device (corresponding to a working device) is attached to a link mechanism extending rearward from the rear of the machine body. is supported and a large step is provided at the rear of the fuselage. Since the worker stands on the step to replenish the seedling planting device with seedlings, if the step is configured to be large, it becomes easier to replenish the seedlings to the seedling planting device.
  • An object of the present invention is to stabilize the support of a step in a paddy field work machine in which a rear axle case for supporting a rear wheel for running is supported by a body via a suspension spring.
  • the paddy field work machine of the present invention comprises a machine body frame arranged along the front-rear direction, a spring bearing member attached to the rear part of the machine body frame, a rear axle case supporting a rear wheel for traveling, and the spring bearing.
  • a suspension spring attached across the member and the rear axle case, a step provided at the rear portion of the body frame, a step frame supporting the step from below, and attached to the spring bearing member, the A vertical frame extends upward from the spring receiving member, and the step frame is attached to the top of the vertical frame.
  • the rear part of the fuselage frame is supported via the rear wheels, the rear axle case and the suspension springs.
  • a vertical frame is directly supported by a spring receiving member of a suspension spring, and a step frame supporting a step is supported by the vertical frame.
  • the step and the step frame are directly supported by the suspension spring via the vertical frame, so that the support of the step and the step frame can be stabilized.
  • the impact from the ground during running is transmitted to the body frame via the rear wheels, the rear axle case, and the suspension spring
  • the impact from the ground is transferred to the vertical frame via the spring bearing member. Since the shock is transmitted and the impact from the ground is dispersed, the strength of the body frame can be improved.
  • the vertical frame can be said to be an existing member for providing the step at a position higher than the floor, effective use of the vertical frame, which is an existing member, is advantageous in terms of structural simplification.
  • the lower portion of the vertical frame is attached across the spring receiving member and the body frame.
  • the lower part of the vertical frame is attached across the spring receiving member and the body frame, so that the vertical frame serves as a reinforcing member for attaching the spring receiving member and the body frame. It is advantageous in terms of strength improvement.
  • the spring receiving member extends rightward from the right side portion of the body frame and extends leftward from the left side portion of the body frame, A body portion attached to a lower portion of the body frame, a portion extending rightward from the right side portion of the body frame in the body portion, and a right side portion of the body frame. and a left mounting portion mounted over a portion of the body portion extending leftward from the left side portion of the body frame and the left side portion of the body frame. It is preferable to have a part and
  • the spring receiving member has a body portion and right and left mounting portions and is mounted on the lower, right and left side portions of the body frame.
  • the lower portion of the vertical frame is attached over the upper portion of the body frame, the side portion of the body frame, and the portion of the body portion that extends from the side portion of the body frame. , is preferably attached across the spring receiving member and the body frame.
  • the lower part of the vertical frame is attached across the spring receiving member and the body frame, so that the vertical frame serves as a reinforcing member for attaching the spring receiving member and the body frame. It is advantageous in terms of strength improvement.
  • the load applied to the vertical frame from the step and the step frame is applied to the body frame without difficulty, so the support strength of the step and the step frame is improved.
  • a floor is provided on the body frame, the step is provided at a position higher than the floor, a floor frame supporting the floor from below is provided on the body frame, and the A right connecting frame mounted along the vertical direction across the right front portion of the step frame and the right rear portion of the floor frame A left connecting frame mounted along the direction is preferably provided.
  • the right and left sides of the step frame extend over the right and left front portions of the step frame and the right and left rear portions of the floor frame. Since the connecting frame is attached, it is advantageous in terms of improving the supporting strength of the step frame and also in terms of improving the supporting strength of the floor frame.
  • a fuel tank is provided below the right front portion or the left front portion of the step frame, and the right or left connecting frame is positioned laterally outside the fuel tank in the vertical direction. is preferably arranged along the
  • a paddy field work machine is sometimes provided with a fuel tank below the right front portion or the left front portion of a step (step frame).
  • the right or left connecting frame is arranged laterally outside the fuel tank along the vertical direction, so that the right or left connecting frame functions as a fuel tank protection member. This is advantageous in terms of preventing damage to the fuel tank.
  • the connecting frame also functions as a protective member for the fuel tank.
  • a plurality of projecting portions projecting downward are provided at the lower portion of the step, and the step is supported by the step frame by placing the projecting portions on the step frame. and is suitable.
  • the step is stably supported by the step frame by placing the projection of the step on the step frame.
  • a recess that enters downward is formed in the upper portion of the protrusion, and a bolt enters the recess and is attached across the protrusion and the step frame, whereby the step is It is preferably connected to the frame.
  • the bolt is attached to the portion where the step and the step frame contact each other, and the step is connected to the step frame, so that the step is stably connected to the step frame. Since the bolt enters the concave portion (protruding portion) of the step and rarely protrudes upward from the step, the worker standing on the step does not feel uncomfortable.
  • the step has a front step and a rear step connected to the rear portion of the front step, and the step frame includes a front step frame supporting the front step from below and the rear step from below. and a rear step frame for supporting from the side, and since the rear step and the rear step frame are not provided, the installation area for installing the agricultural material supply device capable of supplying the agricultural material to the paddy field is reduced to the above It is preferably formed on the rear side with respect to the front step and the front step frame.
  • a step has a pre-step and a post-step
  • a step-frame has a pre-step-frame and a post-step-frame.
  • the front step (front step frame) should be provided and the rear step (rear step frame) should not be provided.
  • an installation area for installing the agricultural material supply device is formed in the rear step (rear step frame) portion, so that the agricultural material supply device can be installed in the installation area without difficulty.
  • a type equipped with an agricultural material supply device and a type not equipped with an agricultural material supply device can be produced without difficulty.
  • the productivity of the paddy field work machine can be improved.
  • FIG. 4 is a plan view of the vicinity of the right and left floor frames;
  • FIG. 4 is a plan view of the body frame, the front step frame, and the rear step frame.
  • Fig. 3 is a left side view of the vicinity of the body frame, floor frame, front step frame and rear step frame;
  • FIG. 3 is a longitudinal front view of the vicinity of a spring receiving member and a suspension spring;
  • FIG. 5 is a cross-sectional plan view of the vicinity of the spring receiving member; It is a right side view near a fuel tank.
  • FIG. 4 is a perspective view of a right step and a left step; It is a top view of a right step and a left step. It is a bottom view of a right step and a left step. It is a longitudinal front view near the right step and the left step. It is a longitudinal left side view near the right leg part and the left leg part of a seat part.
  • FIG. 11 is a plan view of the rear step; It is a bottom view of a back step. It is a longitudinal rear view of a rear step.
  • FIG. 11 is a plan view of the rear step;
  • FIG. 10 is a perspective view of a lateral step;
  • FIG. 4 is a plan view of a lateral step; It is a right view of a horizontal step.
  • FIG. 10 shows a right side panel opening and a left side panel opening; It is a left side view near an engine and a transmission case. It is a top view near an engine and a transmission case.
  • it is a vertical front view near a fertilizing apparatus.
  • it is a rear view near a fertilizing apparatus.
  • it is a left side view of the vicinity of a fertilizing apparatus.
  • it is a longitudinal left side view of the vicinity of a fertilizing apparatus.
  • FIGS. 1 to 32 show a riding-type rice transplanter that is an example of a paddy field work machine.
  • F indicates the forward direction
  • B indicates the rearward direction
  • U indicates the upward direction
  • D indicates the downward direction
  • R indicates the right direction
  • L indicates the left direction.
  • a body frame 3 as a body is supported by right and left front wheels 1 for running and right and left rear wheels 2 for running.
  • a link mechanism 4 extends rearward from the rear portion of the body frame 3 , and a seedling planting device 5 as a working device is supported on the rear portion of the link mechanism 4 .
  • the mission case 25 is connected to the front portion of the body frame 3 , and a support frame 42 having a frame shape in plan view is connected to the front portion of the mission case 25 . and extends forward.
  • An engine 49 is supported by the support frame 42 and provided in the front part of the body frame 3, and a bonnet 58 that accommodates the engine 49 is provided.
  • a steering handle 59 for steering the front wheels 1 is provided behind the bonnet 58 .
  • the floor 38 is provided on the body frame 3
  • the step 43 is provided on the rear part of the body frame 3 so as to be positioned higher than the floor 38 .
  • a driver's seat 60 is arranged in the left-right central part of the front part of the step 43
  • a seat part 87 is provided on the step 43 .
  • the seedling planting device 5 includes four planting transmission cases 6 supported at the rear of the link mechanism 4, and four rear right and left parts of the planting transmission case 6. It has a rotating case 7 rotatably supported, a pair of planting arms 8 supported by the rotating case 7, a plurality of floats 9, and a seedling placement base 10, and is configured in an eight-row planting type.
  • the right and left support frames 61 are connected to the right and left portions of the support frame 42 and extend upward laterally outward of the right front portion and laterally outward of the left front portion of the floor 38,
  • a spare seedling mount 62 is attached to the top of the support frame 61 .
  • a preliminary seedling loading table 63 is attached to the lower part of the support frame 61, a preliminary seedling loading table 64 is attached to the front part of the preliminary seedling loading table 63 so as to be able to swing up and down, and a preliminary seedling loading table 65 is It is attached to the rear part of the spare seedling placing table 63 so as to be able to swing up and down.
  • the right and left body frames 3 are arranged along the front-rear direction, and the body frames 3 are made of square pipes having a square cross section.
  • the right and left connecting portions 11 are connected downward to the front portion of the body frame 3
  • the right and left frames 12 are connected across the lower portion of the connecting portion 11 and the front and rear intermediate portions of the body frame 3 .
  • a mission case 25 is connected to the front portion of the body frame 3 and the connecting portion 11 .
  • a square pipe-shaped horizontal frame 19 is connected along the left-right direction across the lower part of the body frame 3 and the vertical frame 13 .
  • a rectangular pipe-shaped horizontal frame 21 is connected along the horizontal direction across the horizontal frame 17
  • a rectangular pipe-shaped horizontal frame 22 is connected along the horizontal direction across the upper portion of the vertical frame 16 .
  • An angle-shaped horizontal frame 23 (see FIG. 8) is connected along the left-right direction across the rear portion of the body frame 3 .
  • the upper link 4a of the link mechanism 4 is supported on the upper portion of the vertical frame 16 and extends rearward so as to be vertically swingable about an axis P1 extending in the left-right direction.
  • a lower link 4b of the link mechanism 4 is supported by the rear portion of the body frame 3 and extends rearward so as to be vertically swingable about an axis P2 extending in the left-right direction.
  • a hydraulic cylinder 24 is connected across the position of the axis P1 of the vertical frame 16 and the rear part of the lower link 4b of the link mechanism 4, and the link mechanism 4 is operated to swing up and down by the expansion and contraction operation of the hydraulic cylinder 24. be done.
  • the link mechanism 4 (upper link 4a and lower link 4b) is supported by the rear portion (vertical frame 16) of the body frame 3 and extends rearward.
  • the right and left front axle cases 26 are connected to the right and left portions of the transmission case 25 and extend laterally outward on the right and left sides.
  • a left front wheel 1 is steerably supported by a front axle case 26 .
  • rear axle cases 27 are provided to support the right and left rear wheels 2 .
  • the right and left brackets 28 are connected to the front-rear intermediate portion of the body frame 3, and the right and left upper links 29 are supported by the brackets 28 so as to be capable of swinging up and down around an axis P3 extending in the left-right direction. and extends rearward.
  • the right and left lower links 30 are supported by the lower portion of the connecting portion 11 and extend rearward so as to be vertically swingable about an axis P4 extending in the left-right direction.
  • the rear portion of the upper link 29 is connected to the upper portion of the front portion of the rear axle case 27 so as to be able to swing vertically, and the rear portion of the lower link 30 is connected to the front portion of the rear axle case 27. It is connected to a connection pin 20 at the bottom of the part so that it can swing up and down.
  • a bracket 31 is connected downward to the rear part of the right body frame 3 .
  • the lateral rod 32 is supported by a bracket 31 so as to be vertically swingable about an axis P5 extending in the front-rear direction, and extends leftward. It is connected to the rear part of the case 27 so that it can swing up and down.
  • Right and left spring receiving members 33 are attached to the rear of the body frame 3 and right and left coiled suspension springs 34 are attached across the spring receiving members 33 and connecting pins 20 of the rear axle case 27 .
  • a rear axle case 27 is supported by the body frame 3 via a suspension spring 34 .
  • the right and left upper links 29, the right and left lower links 30, the lateral rods 32, and the right and left suspension springs 34 constitute a five-link type suspension mechanism. is supported by the body frame 3 via a suspension mechanism.
  • the spring receiving member 33 is formed of a flat plate, and is bent upward at a main body portion 33a extending in the left-right direction and a right front portion and a right rear portion of the main body portion 33a. It has a right mounting portion 33b and a left mounting portion 33c in which the left front portion and the left rear portion of the body portion 33a are bent upward.
  • a body portion 33 a of the spring receiving member 33 is attached to the lower portion 3 a of the body frame 3 by welding, extends rightward from the right side portion 3 b of the body frame 3 , and extends to the left side of the body frame 3 . It extends leftward from the portion 3c.
  • the right attachment portion 33b of the spring receiving member 33 is attached to the right side portion 3b of the body frame 3 by welding. As a result, the spring receiving member 33 extends rightward from the right side portion 3b of the body frame 3 in the body portion 33a of the spring receiving member 33 and the right side portion 3b of the body frame 3. A right attachment portion 33b of the member 33 is attached.
  • the left attachment portion 33c of the spring bearing member 33 is attached to the left side portion 3c of the body frame 3 by welding.
  • the spring receiving member 33 has a portion extending leftward from the left side portion 3c of the body frame 3 in the body portion 33a of the spring receiving member 33 and the left side portion 3c of the body frame 3.
  • the left attachment portion 33c of the member 33 is attached.
  • Right and left flat connecting members 35 are provided, and cylindrical portions 35a are connected to the connecting members 35 downward.
  • the right and left rods 36 are attached to the connection pins 20 of the rear axle case 27 and extend upward. inserted.
  • the cylindrical portion 35a and the rod 36 of the connecting member 35 are arranged inside the suspension spring 34, the upper portion of the suspension spring 34 is abutted against the connecting member 35, and the connecting member 35 is attached to the spring receiving member 33 by the bolt 37. It is connected to the body portion 33a.
  • the right and left spring receiving members 33 and the right and left connecting members 35 are symmetrical and have the same structure.
  • FIGS. 8 and 9 (Arrangement of Attachment of Vertical Frame and Spring Receiving Member) As shown in FIGS. 8 and 9, the lower portion of the vertical frame 15 (see the above-mentioned (construction of the body frame) and FIGS. 6 and 7) is cut out, and the horizontal portion 15a and the An extending portion 15b extending downward from the lateral portion 15a is formed, and a slit 15c is formed in the extending portion 15b.
  • the lateral portion 15a of the vertical frame 15 is attached to the upper portion 3d of the body frame 3 by welding.
  • the left mounting portion 33c of the spring receiving member 33 is inserted into the slit 15c of the vertical frame 15, and the horizontal portion of the extending portion 15b of the vertical frame 15 is brought into contact with the left side portion 3c of the body frame 3 and welded. is installed by The lower portion of the extension portion 15b of the vertical frame 15 is attached to the body portion 33a of the spring bearing member 33 by welding.
  • the lower portions of the right and left vertical frames 15 are symmetrical and have the same structure.
  • the mounting structure between the lower portion of the right vertical frame 15 and the right spring receiving member 33 and the mounting structure between the lower portion of the left vertical frame 15 and the left spring receiving member 33 are symmetrical and have the same structure. have.
  • the lower portion of the vertical frame 15 is arranged from the upper portion 3d of the body frame 3, the side portions 3b and 3c of the body frame 3, and the side portions 3b and 3c of the body frame 3 in the body portion 33a of the spring bearing member 33.
  • the lower portion of the vertical frame 15 is attached across the spring receiving member 33 and the body frame 3 .
  • the vertical frame 15 is attached to the spring bearing member 33 and extends upward from the spring bearing member 33 .
  • the floor 38 has a front floor 39 , a right floor 40 and a left floor 41 .
  • a rubber floor mat (not shown) is placed across the right floor 40 and the left floor 41 .
  • the front floor 39 is integrally made of synthetic resin, is provided over the right side area and the left side area with respect to the bonnet 58, and has a bilaterally symmetrical shape.
  • An opening 39a is formed in a portion of the front floor 39 above the front wheel 1 so that a plurality of crosspieces are arranged side by side at intervals. The operator can see the front wheel 1 (see FIG. 1) through the opening 39a of the front floor 39. As shown in FIG.
  • a right floor 40 is provided so as to be continuous with the right rear portion of the front floor 39
  • a left floor 41 is provided so as to be continuous with the left rear portion of the front floor 39 .
  • the right floor 40 and the left floor 41 are integrally made of synthetic resin and have a bilaterally symmetrical shape.
  • Openings 40a and 41a are formed in portions of the right floor 40 and the left floor 41 above the front wheel 1 so that a plurality of crosspieces are arranged side by side with a space therebetween. The operator can see the front wheel 1 (see FIG. 1) through the openings 40a and 41a of the right floor 40 and the left floor 41. As shown in FIG.
  • right and left floor frames 50 are provided across the right and left fuselage frame 3 and the support frame 42, the right and left floor frames 50 being bilaterally symmetrical. configured in shape.
  • the floor frame 50 is provided with lateral frames 51 and 52 extending in the left-right direction, and three frames 53 extending in the front-rear direction are connected across the lateral frames 51 and 52. The ends are connected to the body frame 3 .
  • a footrest 70 (see FIGS. 1 and 2) is connected across the lateral frame 51 and the outermost frame 53 when a worker gets on and off.
  • Two frames 54 extending in the front-rear direction are connected to the horizontal frame 52 and extended forward, and a horizontal frame 55 extending in the left-right direction connects the outermost frame 53 and the frame 54 . It is A frame 56 extending in the front-rear direction is connected to the horizontal frame 55 and extends forward, and a horizontal frame 57 extending in the left-right direction is connected across the front portions of the frames 54 and 56 to extend forward. The ends of frame 57 are connected to the front of support frame 42 .
  • the right portion of the front floor 39 and the right floor 40 are attached to the right floor frame 50 and supported by the right floor frame 50 from below.
  • the left portion of the front floor 39 and the left floor 41 are attached to the left floor frame 50 and supported by the left floor frame 50 from below.
  • the steps 43 include a front right step 44, a front left step 45, right and left rear steps 46, and right and left rear steps 47. , right and left lateral steps 48 .
  • the right step 44 and left step 45 have upper surface portions 44a and 45a, front surface portions 44b and 45b, lateral surface portions 44c and 44c, and extension portions 44d and 45d. , and is integrally made of synthetic resin, and has a symmetrical shape except for a portion.
  • the openings 44e and 45e are opened in the upper surface parts 44a and 45a, and a plurality of crosspieces 44f and 45f are provided in the openings 44e and 45e so as to be arranged side by side with a space therebetween.
  • the openings 44e and 45e are located above the rear wheel 2 (see FIG. 1), and the operator can see the rear wheel 2 through the openings 44e and 45e of the right step 44 and left step 45. .
  • the front parts 44b, 45b are connected to the front parts of the upper surface parts 44a, 45a and extend downward.
  • the lateral surface portions 44c, 45c are connected across the lateral portions of the upper surface portions 44a, 45a and the lateral portions of the front surface portions 44b, 45b.
  • the extending portions 44d and 45d are connected to the lower portions of the front portions 44b and 45b and extend forward.
  • Notch portions 44g and 45g are provided across the upper surface portions 44a and 45a and the front surface portions 44b and 45b.
  • Wall portions 44h and 45h are formed on the lateral portions of the upper surface portions 44a and 45a along the front-rear direction so as to be higher than the upper surface portions 44a and 45a.
  • Wall portions 44i and 45i are formed in the left-right direction at rear portions of the upper surface portions 44a and 45a so as to be higher than the upper surface portions 44a and 45a.
  • a projecting portion 44q projecting forward is provided on the lateral portion of the front surface portion 44b, and an opening portion 44r is formed in the upper portion of the projecting portion 44q.
  • a plurality of projecting portions 44j, 45j, 44k, and 45k projecting downward are provided on the lower surface portions of the upper surface portions 44a and 45a and the lower portions of the extension portions 44d and 45d.
  • a large number of vertical wall-like ribs 44m, 45m are provided along the front-back direction, the left-right direction, and the oblique direction over the projecting portions 44j, 45j, 44k, 45k.
  • the projecting portions 44j and 45j are formed so as to be recessed downward from the upper surface portions 44a and 45a and the extending portions 44d and 45d. Projections 44j and 45j are open upward. Small openings 44n, 45n and draining portions 44p, 45p are formed at the bottoms of the projecting portions 44j, 45j.
  • the protruding portions 44k, 45k are formed in a cylindrical shape extending downward from the upper surface portions 44a, 45a and the extending portions 44d, 45d, and are open downward.
  • the bottoms of the protrusions 44j and 45j and the lower ends of the protrusions 44k and 45k are set at the same height, and the lower ends of the ribs 44m and 45m are aligned with the bottoms of the protrusions 44j and 45j and the protrusion 44k. , 45k.
  • the right rear step 46 and the left rear step 46 are the same, and the rear step 46 is integrally made of synthetic resin and has a bilaterally symmetrical shape. It is
  • a main body portion 46a is provided, an opening 46b is opened in the left and right central portion of the main body portion 46a, and a plurality of crosspieces 46c are opened so as to be lined up with intervals along the lateral direction. It is provided in the portion 46b.
  • the opening 46b is located above the rear wheel 2, and the operator can see the rear wheel 2 (see FIG. 1) through the opening 46b of the rear step 46. As shown in FIG.
  • a plurality of projecting portions 46d and 46e projecting downward are provided at the lower portion of the main body portion 46a. are set along.
  • the projecting portion 46d is formed so as to be recessed downward from the main body portion 46a. .
  • a small opening 46g and a drainage portion 46h are opened at the bottom of the projecting portion 46d.
  • the projecting portion 46e is formed in a cylindrical shape extending downward from the main body portion 46a and is open downward.
  • the bottom of the projecting portion 46d, the lower end of the projecting portion 46e, and the lower end of the rib 46f are set at the same height.
  • the right rear step 47 and the left rear step 47 are the same, and the rear step 47 is integrally formed of synthetic resin and has a bilaterally symmetrical shape.
  • the rear step 47 is provided with the same body portion 47a, opening 47b, crosspiece 47c and projection 47d as the main body 46a, opening 46b, crosspiece 46c and projection 46d of the rear step 46.
  • the same projections (not shown), ribs (not shown), openings (not shown) and drains (not shown) as the projections 46e, ribs 46f, openings 46g and drains 46h are provided. It is
  • a wall portion 47i is formed along the left-right direction at the rear portion of the body portion 47a so as to be higher than the body portion 47a.
  • the rear step 47 has the same shape as the rear step 46 except that it has a wall portion 47i.
  • the horizontal step 48 has a first portion 48a and a second portion 48b which are separated from each other, and the first portion 48a and the second portion 48b are integrally made of synthetic resin. is structured. In the right and left lateral steps 48, the first portion 48a and the second portion 48b are identical.
  • the first portion 48a is configured by crosspieces arranged in a grid pattern along the front-rear direction and the left-right direction. formed along.
  • the first portion 48a is set so that the wall portion 48c is located on the right lateral outer side and faces downward.
  • the second portion 48b is arranged on the right side of the first portion 48a so that one wall portion 48d faces upward and the other wall portion 48d faces downward.
  • the first portion 48a is reversed (reversed) with respect to the right first portion 48a so that the wall portion 48c faces the left lateral outside. Position it so that it faces downwards.
  • the second portion 48b is turned upside down with respect to the right second portion 48b (upside down) and arranged on the left side of the first portion 48a, with one wall portion 48d facing downward and the other wall portion 48b facing downward.
  • the wall portion 48d is set to face upward.
  • a step frame 66 is provided to support the step 43 from below, and the step frame 66 is supported by the body frame 3 .
  • the step frame 66 includes a front step frame 67 that supports the right step 44 and the left step 45 as front steps from below, and a rear step frame 67 that supports the rear steps 46 and 47 from below. 1, 4 and 31, it has a horizontal step frame 69 that supports the horizontal step 48 from below.
  • the front step frame 67 is provided with lateral frames 71 and 72 along the left-right direction, and the lateral frame 71 is attached with a mounting bracket 71a.
  • a frame 73 extending in the front-rear direction is connected across the horizontal frames 71 and 72 .
  • a frame 74 extending in the front-rear direction is connected across the lateral ends of the lateral frames 71 and 72 and extends forward from the lateral frame 72 .
  • a frame 75 extending in the front-rear direction is connected to the horizontal frame 72 and extends forward.
  • a horizontal frame 76 extending in the left-right direction is connected across the front ends of the frames 74 and 75 .
  • a receiving frame 77 extending in the front-rear direction is connected to the horizontal frame 71 and extends rearward.
  • the horizontal frame 71 is attached to the upper portion of the right and left vertical frames 15 (see the above-mentioned (construction of the body frame)) and the right and left horizontal frames 17. Concatenated.
  • a horizontal frame 72 is connected to the upper portions of the right and left vertical frames 14 and the right and left horizontal frames 17 .
  • the step frame 66 front step frame 67 is attached to the upper portion of the vertical frame 15 and attached to the upper portion of the vertical frame 14. As shown in FIG.
  • right and left floor frames 50 are provided on the front portion of the body frame 3 .
  • a front step frame 67 is provided at the rear portion of the body frame 3 so as to be arranged at a position higher than the floor frame 50 .
  • a plurality of right connecting frames 79 extend over the right front portion (right lateral frame 76) of the step frame 66 (front step frame 67) and the right rear portion of the floor frame 50 (lateral frame 51 of the right floor frame 50). are installed along the vertical direction.
  • a plurality of left connecting frames 79 extend over the left front portion (left lateral frame 76) of the step frame 66 (front step frame 67) and the left rear portion of the floor frame 50 (lateral frame 51 of the left floor frame 50). are installed along the vertical direction.
  • a fuel tank 80 is provided.
  • the lower front portion of the fuel tank 80 is attached to the lateral frame 51 of the right floor frame 50
  • the upper rear portion of the fuel tank 80 is attached to the right portion of the lateral frame 72 of the front step frame 67 .
  • the fuel tank 80 is provided below the right front portion of the step frame 66 (the front step frame 67).
  • the right outermost connecting frame 79 is arranged along the vertical direction at the right laterally outer position with respect to the fuel tank 80 .
  • the protrusions 44j, 45j, 44k, and 45k of the right step 44 and left step 45 are placed on the front step. It is mounted on the frames 73 , 75 of the frame 67 and the receiving frame 77 .
  • the ribs 44m, 45m and crosspieces 44f, 45f of the right step 44 and left step 45 are placed on the lateral frames 71, 72 of the front step frame 67.
  • the right step 44 and the left step 45 are supported from below by the front step frame 67 (step frame 66).
  • the bolt 81 enters the projections 44j and 45j of the right step 44 and the left step 45 at the projections 44j and 45j of the right step 44 and the left step 45, and the frames 73 and 75 of the front step frame 67 and the receiving frame 77.
  • the right step 44 and the left step 45 are connected to the front step frame 67 (step frame 66).
  • the rear step frame 68 is provided with a horizontal frame 82 extending in the left-right direction, and a plurality of receiving frames 83 extending in the front-rear direction are connected to the horizontal frame 82 to connect to the front and rear frames. It extends backwards.
  • a mounting bracket 84 is attached to the horizontal frame 82, and a mounting frame 85 is connected to the horizontal frame 82 and extends forward.
  • the mounting bracket 84 of the rear step frame 68 is bolted to the rear portion of the lateral frame 18 (see (Construction of body frame) described above).
  • the mounting frame 85 of the rear step frame 68 is bolted to the mounting bracket 71a of the lateral frame 71 of the front step frame 67 (see the above-mentioned (configuration of front step frame supporting right step and left step)).
  • the rear step frame 68 is attached to the front step frame 67, and the rear step frame 68 is attached to the upper portion of the vertical frame 15 (see the above-mentioned (construction of the body frame)) via the front step frame 67. and attached to the top of the vertical frame 14 .
  • the protrusions 46d, 47d and 46e, the ribs 46f and the beams 46c and 47c of the rear steps 46 and 47 are placed on the receiving frame 83 of the rear step frame 68. be placed. Thereby, the rear steps 46 and 47 are supported from below by the rear step frame 68 (step frame 66).
  • a front lower portion 86a of the handrail frame 86 is connected to the horizontal frame 51 of the floor frame 50 (see the above-mentioned (floor frame structure for supporting the floor) and FIG. 5).
  • a rear lower portion 86b of the handrail frame 86 is connected to the lateral frame 71 of the front step frame 67 (see the above-mentioned (configuration of the front step frame supporting the right and left steps) and FIG. 6).
  • the right and left lateral step frames 69 are arranged along the front-rear direction and connected to the rear lower part 86b of the handrail frame 86.
  • the lateral step 48 (the first portion 48a and the second portion 48b) is bolted to the lateral step frame 69. As shown in FIG.
  • the right handrail frame 86 and the lateral step frame 69 and the left handrail frame 86 and the lateral step frame 69 are configured in a bilaterally symmetrical shape.
  • Right and left handrail frames 86 are positioned laterally outward relative to the right portion of the right step 44 and laterally outward relative to the left portion of the left step 45 and extend upward. .
  • the upper surface portion 44a of the right step 44 and the upper surface portion 45a of the left step 45 are arranged at the same height.
  • the upper end of the wall 44i of the right step 44 and the upper ends of the walls 45h and 45i of the left step 45 are arranged at the same height.
  • the fuel tank 80 is covered by the right step 44, and the right front portion of the fuel tank 80 enters the projecting portion 44q of the right step 44, and the fuel filler port 80a of the fuel tank 80 enters the opening 44r of the right step 44. protrude upwards.
  • the driver's seat 60 is arranged in the cutouts 44g and 45g of the right step 44 and left step 45, and arranged in the left-right central part of the front part of the step 43 (right step 44 and left step 45).
  • the right and left rear steps 46 are arranged side by side in the left-right direction so as to be in contact with each other. It is provided so as to be continuous with.
  • the right and left rear steps 47 are arranged side by side in the left-right direction so as to be in contact with each other, and are provided so as to be connected to the rear portion of the rear step 46 .
  • the upper surfaces of the rear step 46 and the rear step 47 are arranged at the same height as the upper ends of the wall portions 44h, 45h, 44i, 45i of the right step 44 and left step 45.
  • the upper surface of the lateral step 48 is arranged at the same height as the upper surfaces of the rear steps 46, 47 (body portions 46a, 47a) and the upper ends of the walls 44h, 45h, 44i, 45i of the right step 44 and left step 45. be done.
  • the upper end portion of the wall portion 48d of the lateral step 48 and the upper end portion of the wall portion 47i of the rear step 47 are arranged at the same height.
  • a seat 87 is provided.
  • the seat portion 87 is formed by bending a pipe material, and includes a bar-shaped lateral portion 87a extending in the left-right direction, a bar-shaped right leg portion 87b extending downward from the right portion of the lateral portion 87a, and a lateral portion 87a.
  • a rod-shaped left leg portion 87c extending downward from the left portion of the portion 87a, an angle-shaped mounting bracket 87d connected to the lower ends of the right leg portion 87b and the left leg portion 87c, and an angle-shaped mounting bracket 87d connected to the mounting bracket 87d. and a boss portion 87e.
  • the seat portion 87 is positioned so that the lower portion of the right leg portion 87b of the seat portion 87 is located closer to the center of the step 43 than the right portion of the lateral portion 87a of the seat portion 87 is.
  • the right leg 87b is bent.
  • the left leg portion 87c of the seat portion 87 is bent so that the lower portion of the left leg portion 87c of the seat portion 87 is positioned closer to the left and right center of the step 43 than the left portion of the lateral portion 87a of the seat portion 87 is.
  • the width W1 of the lateral portion 87a of the seat 87 is larger than the width W2 of the lower portions of the right leg 87b and the left leg 87c of the seat 87.
  • the right and left mounting brackets are attached to the lateral frame 71 of the front step frame 67 (see above (Configuration of front step frame supporting right and left steps) and FIG. 6).
  • a bracket 71b is attached, and the attachment bracket 71b is positioned below the openings 44e and 45e of the right step 44 and left step 45. As shown in FIG.
  • a right mounting bracket 87 d (lower portion of the right leg portion 87 b ) of the seat portion 87 is placed on the crosspiece 44 f of the right step 44 , and a right boss portion 87 e of the seat portion 87 is mounted on the opening of the right step 44 . 44e and mounted on the right mounting bracket 71b of the lateral frame 71 (front step frame 67).
  • the left mounting bracket 87 d (lower part of the left leg 87 c ) of the seat 87 is mounted on the crosspiece 45 f of the left step 45
  • the left boss 87 e of the seat 87 is mounted on the opening of the left step 45 .
  • a bolt 88 is inserted into the boss portion 87e of the seat portion 87 and attached to the mounting bracket 71b of the lateral frame 71 (front step frame 67).
  • the bolt 88 is arranged along the vertical direction between the adjacent crosspieces 44f and 45f in the openings 44e and 45e of the right step 44 and left step 45, and the mounting bracket 87d (right leg 87b and the lower part of the left leg 87c) and the mounting bracket 71b of the lateral frame 71 (front step frame 67).
  • the crosspieces 44f and 45f of the right step 44 and the left step 45 are sandwiched between the mounting bracket 87d of the seat portion 87 and the mounting bracket 71b of the lateral frame 71 (front step frame 67). Then, the right leg 87b and left leg 87c of the seat 87 are attached to the step 43 (right step 44 and left step 45).
  • the seat portion 87 is positioned behind the driver's seat 60 and between the driver's seat 60 and the rear end of the step 43 (rear step 47). , the step 43 (the right step 44 and the left step 45) are provided along the horizontal direction.
  • the right end of the seat portion 87 (lateral portion 87a) is positioned closer to the center of the step 43 than the right end of the step 43 (right lateral step 48), and the right end of the right step 44 It is located on the left-right center side of the step 43 from (the wall portion 44h).
  • the left end of the seat portion 87 (lateral portion 87a) is positioned closer to the center of the step 43 than the left end of the step 43 (left horizontal step 48), and the left end of the left step 45. It is located on the left-right center side of the step 43 from (the wall portion 45h).
  • the lower portion (mounting bracket 87d) of the right leg portion 87b of the seat portion 87 is positioned at the step 43 (right step 44) at a portion on the left-right center side of the step 43 from the right portion of the lateral portion 87a of the seat portion 87. can be attached to
  • the lower portion (mounting bracket 87d) of the left leg portion 87c of the seat portion 87 is positioned at the step 43 (left step 45) at the left-right center side of the step 43 from the left portion of the lateral portion 87a of the seat portion 87. can be attached to
  • the width W1 of the lateral portion 87a of the seat 87 and the width W2 of the lower portions of the right leg 87b and the left leg 87c of the seat 87 are larger than the width W3 of the driver's seat.
  • a right portion and a right leg portion 87b of the lateral portion 87a of the seat portion 87 are positioned laterally outward on the right side of the driver’s seat 60, and a left portion and a left leg portion 87c of the lateral portion 87a of the seat portion 87 are located on the driver’s seat. It is located laterally to the left of 60.
  • a lower frame 89 is mounted across the lower rear portion of the right and left handrail frames 86 .
  • the lower frame 89 is constructed by bending a pipe member, and is a mounting bracket 89d which is a height adjusting portion connected to the ends of the lateral portion 89a, the right portion 89b and the left portion 89c, the right portion 89b and the left portion 89c. have.
  • a lateral portion 89a of the lower frame 89 is provided in the vicinity of the upper portion of the rear portion of the step 43 (the wall portion 47i of the rear step 47) along the left-right direction.
  • a right portion 89b and a left portion 89c of the lower frame 89 are provided above and near the right and left lateral portions (lateral steps 48) of the step 43 along the front-rear direction.
  • Mounting brackets 89d of the lower frame 89 are attached to the lower rear portions of the right and left handrail frames 86 by bolts.
  • An upper frame 90 is attached over the rear upper portion of the right and left handrail frames 86 .
  • the upper frame 90 is constructed by bending a pipe member, and is a mounting bracket 90d which is a height adjusting portion connected to the ends of the lateral portion 90a, the right portion 90b and the left portion 90c, the right portion 90b and the left portion 90c. have.
  • the lateral portion 90a of the upper frame 90 is provided along the horizontal direction along the lateral portion 89a of the lower frame 89 at a position spaced upward from the lateral portion 89a of the lower frame 89 by a predetermined distance.
  • the right portion 90b and the left portion 90c of the upper frame 90 are positioned above the right portion 89b and the left portion 89c of the lower frame 89 at a predetermined distance along the right portion 89b and the left portion 89c of the lower frame 89. It is provided along the front-rear direction.
  • the mounting brackets 90d of the upper frame 90 are attached to the upper rear portions of the right and left handrail frames 86 with bolts.
  • a plurality of frames 91 are connected across the upper frame 90 and the lower frame 89 .
  • the portion above the rear portion of the step 43 (lateral portion 90a) in the upper frame 90 is arranged on the rear side of the portion above the rear portion of the step 43 in the lower frame 89 (lateral portion 89a). ing.
  • the right and left handrail frames 86 are provided on the front side of the upper frame 90 and lower frame 89 at the right and left ends of the step 43 (right and left lateral steps 48).
  • the upper frame 90 is provided at a position lower than the upper end of the handrail frame 86 .
  • a plurality of bolt mounting openings are formed in the handrail frame 86 along the vertical direction.
  • the bonnet 58 has right and left lights 92, a grid-shaped front grille 93, and a center mascot 94 (see FIGS. 1 and 2) at the front of the hood 58. is provided.
  • a right side panel 95 is provided on the right side of the bonnet 58
  • a left side panel 96 is provided on the left side of the bonnet 58 .
  • the right and left side panels 95 and 96 are composed of frame portions 95a and 96a forming an outer peripheral portion, and frame portions 95b and 96b connected along the front-rear direction across the front and rear portions of the frame portions 95a and 96a.
  • Grid-shaped frame portions 95c and 96c are provided between the frame portions 95a and 96a and the frame portions 95b and 96b.
  • an elongated hexagonal right opening 95d is formed along the front-rear direction.
  • a plurality of elongated hexagonal left openings 96d are formed along the front-rear direction.
  • the frame portion 95c (opening portion 95d) of the right side panel 95 has a predetermined horizontal width along the horizontal direction. has a rectangular cross section.
  • the outer edge 95e and the inner edge 95f of the opening 95d of the right side panel 95 have the same elongated hexagonal shape.
  • the area is the air passage cross-sectional area of the opening 95 d of the right side panel 95 .
  • the frame portion 96c (opening portion 96d) of the left side panel 96 has a predetermined horizontal width along the horizontal direction, and the cross-sectional shape of the frame portion 96c of the left side panel 96 is V-shaped. ing.
  • the front-to-rear width WL11 of the outer edge 96e of the left side panel 96 is larger than the front-to-rear width WL12 of the inner edge 96f of the left side panel 96.
  • the vertical width WL21 of the outer edge 96e of the left side panel 96 is larger than the vertical width WL22 of the inner edge 96f of the left side panel 96. As shown in FIG.
  • the opening 96d of the left side panel 96 is wider than the front-to-rear width WL12 and the vertical width WL22 of the inner portion of the bonnet 58 at the opening 96d of the left side panel 96.
  • 58 is formed in an outwardly widening shape in a cross-sectional view so that the front-rear width WL11 and the vertical width WL21 of the portion on the outer side of 58 are large.
  • the air passing cross-sectional area of the portion inside the bonnet 58 in the opening 96d of the left side panel 96 and the bonnet in the opening 96d of the left side panel 96 is set to be different.
  • the front-rear width WR1 of the edges 95e and 95f of the right side panel 95 and the width of the left side panel 96 The front-to-rear width WL11 of the outer edge portion 96e is the same.
  • the vertical width WR2 of the edges 95e and 95f of the right side panel 95 and the vertical width WL21 of the outer edge 96e of the left side panel 96 are the same.
  • the front-to-rear width WR1 of the edges 95e and 95f of the right side panel 95 is larger than the front-to-rear width WL12 of the inner edge 96f of the left side panel 96.
  • the vertical width WR2 of the edges 95e and 95f of the right side panel 95 is larger than the vertical width WL22 of the inner edge 96f of the left side panel 96. As shown in FIG.
  • the elongated hexagonal area of the edges 95e and 95f of the right side panel 95 air passage cross-sectional area of the opening 95d of the right side panel 95
  • the elongated hexagon of the outer edge 96e of the left side panel 96 The area of the shape (cross-sectional area of air passage of the portion of the opening 96d of the left side panel 96 on the outside of the bonnet 58) is the same.
  • the opening 96d of the left side panel 96 becomes one of the right opening 95d and the left opening 96d, and the opening 95d of the right side panel 95 becomes the right opening. It becomes the other opening 95d of 95d and the left opening 96d.
  • the engine 49 is laterally supported by the support frame 42 (see the above-mentioned (overall configuration of riding-type rice transplanter) and FIG. 5).
  • An output shaft 49 a of the engine 49 protrudes leftward from a left portion of the engine 49 , and an output pulley 78 and a flywheel 97 are attached to the output shaft 49 a of the engine 49 .
  • a support stay 103 connected to the left front portion of the engine 49 extends leftward and below the right floor frame 50 (see the above-mentioned (floor frame structure for supporting the floor) and FIG. 5). I'm in.
  • a support stay 104 connected to the left rear portion of the engine 49 extends leftward and passes under the right floor frame 50 while straddling over the transmission belt 99 .
  • a muffler 105 is arranged in the longitudinal direction below the right floor frame 50 , the front part of the muffler 105 is supported by the support stay 103 , and the rear part of the muffler 105 is supported by the support stay 104 .
  • An exhaust pipe 106 extending from the front of the engine 49 is connected to the front of the muffler 105 .
  • the power of the auxiliary transmission is transmitted to the front wheels 1 via a transmission system (not shown) inside the front axle case 26 (see the above-mentioned (front and rear wheel support structure) and FIG. 5), A transmission shaft (not shown) from the transmission case 25 to the rear axle case 27 (see the above-mentioned (front and rear wheel support structure) and FIG. 7), and a transmission system inside the rear axle case 27 (not shown). ) to the rear wheels 2.
  • the power branched from between the continuously variable transmission 98 and the sub-transmission is transmitted from the transmission case 25 to the seedling planting device 5 (see the above-mentioned (configuration of seedling planting device and spare seedling rest) and FIGS. 1 and 2). ) to the seedling planting device 5 via a transmission shaft (not shown).
  • a fan 100 that is rotationally driven by the power of the engine 49 is provided on the right side of the engine 49 .
  • a radiator 101 is arranged along the front-rear direction and is supported on the right side of a support frame 42 (see the above-mentioned (overall configuration of riding-type rice transplanter) and FIG. 5). , is attached to the right side of the radiator 101 .
  • the fan 100 and the radiator 101 are provided between the engine 49 and the right side panel 95 (the other opening 95 d of the hood 58 ) of the hood 58 inside the hood 58 .
  • the fan 100 is provided between the radiator 101 and the engine 49, and the net member 102 is provided in a portion of the radiator 101 facing the other opening 95d of the bonnet 58. As shown in FIG.
  • the air introduced into the hood 58 from the opening 95d of the right side panel 95 of the hood 58 passes through the net member 102, the radiator 101, and the fan 100, flows around the engine 49, and flows to the left side of the hood 58.
  • the exterior of the bonnet 58 is exited through an opening 96d in the panel 96 (see above (Right and Left Side Panel Opening Configurations) and FIGS. 24 and 25).
  • FIGS. 1 to 28 show a ride-on type rice transplanter that is not equipped with a fertilizing device 107.
  • FIG. 1 to 28 show a ride-on type rice transplanter that is not equipped with a fertilizing device 107.
  • FIG. 1 to 28 a case of obtaining a riding-type rice transplanter equipped with a fertilizing device 107, which is an agricultural material supply device, will be described below.
  • the fertilizing device 107 has a hopper 108, a plurality of feeding units 109, an air blowing unit 110, a conveying air duct 111, a discharge duct 112, and the like.
  • a support frame 114 is provided along the left-right direction, and right and left support frames 113 are connected to the support frame 114 and extend downward.
  • the lower portion of the support frame 113 is bolted to the rear portion of the lateral frame 18 (see (construction of the body frame) described above and FIG. 6).
  • right and left support frames 115 are connected to the lower rear portion of the handrail frame 86, and lateral support frames 116 are connected to the right and left support frames. 115 are connected.
  • the feeding portion 109 is connected to the support frames 114 and 116 so as to be sandwiched from the front and rear by the support frames 114 and 116 .
  • a ditch making device (not shown) is attached to the float 9 (see the above-mentioned (structure of the seedling planting device and the preliminary seedling resting table) and FIGS. 1 and 2), and the delivery portion 109 and the ditch making device are attached.
  • a hose (not shown) is connected across.
  • a blower 110 is attached to the left side of the support frame 114 .
  • the blower unit 110 is A blower case 110a attached to the left part of the support frame 114, a blower blade (not shown) housed in the blower case 110a so as to be rotatable around an axis extending in the vertical direction, and an electric motor for rotating the blower blade. and a motor 110b.
  • a cylindrical carrier air duct 111 is arranged along the left-right direction and is connected along the left-right direction across the lower front portions of the plurality of feeding portions 109.
  • a blower switching section 119 is connected to the left portion of the carrier air duct 111 , and a blower case 110 a of the blower section 110 is connected to the blower switching section 119 .
  • a cylindrical exhaust duct 112 is arranged in the left-right direction on the front side of the carrier-air duct 111 and at the same height as the carrier-air duct 111 , and extends in the left-right direction across the front portions of the plurality of feed-out portions 109 .
  • the left part of the exhaust duct 112 is connected to the air switching part 119 .
  • a cover 120 for protecting the conveying air duct 111 and the discharge duct 112 is provided above the discharge duct 112 over substantially the entire length of the discharge duct 112 along the left-right direction.
  • the intake duct 117 extends downward from the lower portion of the blower case 110a of the blower portion 110, and the lower side of the upper surface portion 45a of the left step 45 is connected to the engine. 49 and extends forward.
  • a support stay 118 is attached to the frame 73 of the front step frame 67 (see the aforementioned (configuration of the front step frame supporting the right step and the left step) and FIG. 6).
  • a suction duct 117 is supported by a support stay 118 and arranged below the lower portion 86 b of the left handrail frame 86 .
  • the blower section 110 generates carrier air from the air guided by the air blower 110 , and supplies the carrier air from the air switching section 119 to the carrier air duct 111 . supplied to
  • the manure discharge port (not shown) from the feeding portion 109 to the discharge duct 112 is closed, and the air blow switching portion 119 is set to a state in which the air from the air blowing portion 110 is supplied to the air duct 111 .
  • the fertilizer in the hopper 108 is fed into the feeding portion 09 by the feeding portion 109, and the fertilizer inside the feeding portion 09 is pushed through the hose by the conveying air supplied from the conveying air duct 111 to the feeding portion 109. It is fed through to the grooving machine (see above (Construction of Fertilizer Applicator in First Alternative Embodiment of the Invention)).
  • the grooving machine see above (Construction of Fertilizer Applicator in First Alternative Embodiment of the Invention)
  • the fertilizer supplied to the grooving machine is supplied to the grooves in the paddy field.
  • the manure discharge port (not shown) from the feeding unit 109 to the discharge duct 112 is opened, and the air blow switching unit 119 is switched to the conveying air of the air blow unit 110. is supplied to the discharge duct 112 .
  • the fertilizer remaining in the hopper 108 is supplied to the discharge duct 112, and is conveyed to the right outlet of the discharge duct 112 by the conveying wind supplied to the discharge duct 112. Collect the manure coming out of the container into a collection bag (not shown).
  • the fertilizing device 107 (hopper 108, feeding unit 109, air blowing unit 110, conveying air duct 111, discharge duct 112, and air switching unit 119) has an installation area for installing the fertilizing device 107. (Refer to the above-mentioned (installation area for providing the fertilizing device in the first alternative embodiment of the invention)).
  • the fertilizing device 107 is arranged along the horizontal direction on the rear side with respect to the rear portion of the step 43 (the right step 44 and the left step 45) in plan view and side view.
  • the fertilizing device 107 is arranged between the rear portion of the right lateral step 48 and the rear portion of the left lateral step 48 in plan view and rear view.
  • the rear portion of the right lateral step 48 which is the right portion of the step 43, extends rearward so as to be positioned laterally outward with respect to the right portion of the fertilizing device 107.
  • the rear portion of the left lateral step 48 which is the left portion of the step 43, extends rearward so as to be positioned laterally outward with respect to the left portion of the fertilizing device 107. As shown in FIG.
  • the upper surfaces 44a and 45a of the right step 44 and left step 45, the discharge duct 112, the conveying air duct 111, the blower case 110a of the blower section 110, and the blower switching section 119 are arranged at the same height.
  • the upper surface portions 44a and 45a of the right step 44 and left step 45, the discharge duct 112, and the conveying air duct 111 overlap over the entire length of the conveying air duct 111 and the entire length of the discharge duct 112.
  • the upper surface portion 45a of the left step 45, the blower case 110a of the blower portion 110, and the blower switching portion 119 overlap.
  • the fertilizing device 107 is provided at a relatively low position in the riding-type rice transplanter.
  • a working state a state in which the front wheels 1 and the rear wheels 2 are in contact with the plowing board and the float 9 of the seedling planting device 5 is in contact with the paddy field
  • it is obliquely upward from the seedling placement table 10 along the seedling placement table 10 in a side view.
  • an imaginary line (not shown) extending forward, the upper end of the fertilizing device 107 (hopper 108) is located below the imaginary line.
  • a hopper for storing chemicals, which are agricultural materials
  • a plurality of delivery units (not shown), an air blower (not shown), a conveying air duct (not shown), and a discharge
  • a chemical supply device having a duct (not shown) or the like and configured to supply a chemical to the paddy field may be installed as the agricultural material supply device.
  • the blower unit 110 and the blower switching unit 119 are configured to be connected to the right portions of the conveying wind duct 111 and the discharge duct 112, and the intake duct 117 is connected to the lower part of the blower case 110a of the blower unit 110. , may extend downward, and the lower side of the upper surface portion 44 a of the right step 44 may extend forward toward the engine 49 .
  • the intake duct 117 may be arranged above the lower portion 86 b of the right (left) handrail frame 86 .
  • the front lower portion of the fuel tank 80 is attached to the lateral frame 51 of the left floor frame 50, and the rear upper portion of the fuel tank 80 is attached to the left portion of the lateral frame 72 of the front step frame 67.
  • the fuel tank 80 may be provided below the left front portion of the step frame 66 (the front step frame 67).
  • the left outermost connecting frame 79 may be arranged along the vertical direction at the left laterally outer position with respect to the fuel tank 80 .
  • the right step 44 and the left step 45 may be configured integrally as one front step.
  • the right and left floor frames 50 may be connected to form one floor frame 50 .
  • the right step 44 and the left step 45 may be provided with dedicated openings for mounting the seat portion 87 thereon.
  • the boss portion 87e of the seat portion 87 becomes unnecessary, so that the right step 44 and the left step 45 are sandwiched between the mounting bracket 87d of the seat portion 87 and the mounting bracket 71b of the lateral frame 71.
  • the bolt 88 can be tightened through the openings of the right step 44 and the left step 45 across the mounting bracket 87 d of the seat portion 87 and the mounting bracket 71 b of the horizontal frame 71 .
  • the elongated hexagonal shape of the inner edge 96f of the left side panel 96 opening 96d is greater than the elongated hexagonal shape of the outer edge 96e of the left side panel 96 opening 96d. It may be configured to be a thing.
  • the air passing cross-sectional area of the portion inside the bonnet 58 in the opening 96d of the left side panel 96 and the bonnet in the opening 96d of the left side panel 96 is set to be different.
  • the engine 49 is arranged with the left and right reversed, the output shaft 49a of the engine 49 is provided on the right side of the engine 49, and the fan 100, the radiator 101 and the net member 102 are arranged on the left side of the engine 49.
  • the opening 95d of the right side panel 95 may be configured as shown in the right part of FIG. 5 and the lower part of FIG. ) may be configured as described in
  • the opening 96d of the left side panel 96 may be constructed as shown in the left part of FIG. 5 and the upper part of FIG.
  • the engine 49 may be configured to be air-cooled. According to this configuration, a fan 100 for air cooling of the engine 49 is provided, and the radiator 101 is eliminated.
  • the openings 95d, 86d of the right and left side panels 95, 96 may be formed not only in an elongated hexagonal shape, but also in a circular shape, a rectangular shape, an elongated elliptical shape, a parallelogram shape, or the like.
  • the seat portion 87 may be provided as a guard member for the fertilizing device 107, the right and left side steps 48 may be eliminated, and the upper frame 90 and the lower frame 90 may be omitted. Frame 89 may be eliminated.
  • a motorized winch (not shown) may be provided as described below.
  • a winch frame (not shown) is attached to the front part of the support frame 42 (see the above-mentioned (overall configuration of the riding-type rice transplanter) and FIG. 5), and the front position of the floor 38 extends upward. , the winch is mounted on the top of the winch frame so that it is positioned higher than the floor 38.
  • a wire (not shown) extended from the winch is attached to a tree or the like on a ridge, and the wire is wound by the winch to escape the ride-on rice transplanter. . Since the winch is arranged at a position higher than the floor 38, the winch will not be submerged.
  • one mounting member may be configured to be slightly weaker than the other mounting members.
  • the fragile mounting member can be damaged and the winch frame can be dropped from the support frame 42, avoiding a state in which a large load is applied to the support frame 42. be able to.
  • the present invention can be applied not only to riding-type rice transplanters, but also to riding-type direct seeders equipped with a seeding device for sowing seeds on the surface of a field as a working device.

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
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  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

The present invention comprises: a spring receiving member 33 attached to a rear part of a body frame 3; a rear axle case 27; and a suspension spring 34 attached to the spring receiving member 33 and the rear axle case 27. The present invention comprises a step frame 66 which supports a step from below, and a vertical frame 15 which is attached to the spring receiving member 33 and which extends upward from the spring receiving member 33. The step frame 66 is attached to an upper part of the vertical frame 15.

Description

水田作業機Paddy work machine
　本発明は、乗用型田植機や乗用型直播機等の水田作業機に関する。 The present invention relates to a paddy field work machine such as a ride-on rice transplanter and a ride-on direct seeder.
　水田作業機の一例である乗用型田植機では、特許文献１に開示されているように、機体の後部から後方に向けて延出されたリンク機構に、苗植付装置（作業装置に相当）が支持され、大きなステップが機体の後部に設けられたものがある。
　作業者は、ステップに立って苗植付装置に苗を補給するので、ステップが大きなものに構成されていると、苗植付装置への苗の補給作業が行い易くなる。 In a riding-type rice transplanter, which is an example of a paddy field working machine, as disclosed in Patent Document 1, a seedling planting device (corresponding to a working device) is attached to a link mechanism extending rearward from the rear of the machine body. is supported and a large step is provided at the rear of the fuselage.
Since the worker stands on the step to replenish the seedling planting device with seedlings, if the step is configured to be large, it becomes easier to replenish the seedlings to the seedling planting device.
日本国特開２０１７－１３７５９号公報Japanese Patent Application Laid-Open No. 2017-13759
　水田作業機では、走行用の後輪を支持する後車軸ケースが、サスペンションバネを介して機体に支持されたものがある。
　本発明は、走行用の後輪を支持する後車軸ケースがサスペンションバネを介して機体に支持された水田作業機において、ステップの支持の安定化を図ることを目的としている。 In some paddy field work machines, a rear axle case for supporting rear wheels for traveling is supported by the machine body via suspension springs.
SUMMARY OF THE INVENTION An object of the present invention is to stabilize the support of a step in a paddy field work machine in which a rear axle case for supporting a rear wheel for running is supported by a body via a suspension spring.
　本発明の水田作業機は、前後方向に沿って配置された機体フレームと、前記機体フレームの後部に取り付けられたバネ受け部材と、走行用の後輪を支持する後車軸ケースと、前記バネ受け部材と前記後車軸ケースとに亘って取り付けられたサスペンションバネと、前記機体フレームの後部に設けられたステップと、前記ステップを下側から支持するステップフレームと、前記バネ受け部材に取り付けられ、前記バネ受け部材から上方に向けて延出された縦フレームとが備えられ、前記ステップフレームが前記縦フレームの上部に取り付けられている。 The paddy field work machine of the present invention comprises a machine body frame arranged along the front-rear direction, a spring bearing member attached to the rear part of the machine body frame, a rear axle case supporting a rear wheel for traveling, and the spring bearing. A suspension spring attached across the member and the rear axle case, a step provided at the rear portion of the body frame, a step frame supporting the step from below, and attached to the spring bearing member, the A vertical frame extends upward from the spring receiving member, and the step frame is attached to the top of the vertical frame.
　本発明によると、機体フレームの後部は、後輪、後車軸ケース及びサスペンションバネを介して支持されている。縦フレームがサスペンションバネのバネ受け部材に直接的に支持され、ステップを支持するステップフレームが縦フレームに支持されている。
　これにより、ステップ及びステップフレームが、縦フレームを介してサスペンションバネに直接的に支持されるようになるので、ステップ及びステップフレームの支持の安定化を図ることができる。 According to the invention, the rear part of the fuselage frame is supported via the rear wheels, the rear axle case and the suspension springs. A vertical frame is directly supported by a spring receiving member of a suspension spring, and a step frame supporting a step is supported by the vertical frame.
As a result, the step and the step frame are directly supported by the suspension spring via the vertical frame, so that the support of the step and the step frame can be stabilized.
　本発明によると、走行時の地面からの衝撃が、後輪、後車軸ケース及びサスペンションバネを介して機体フレームに伝達された場合、地面からの衝撃が、バネ受け部材を介して縦フレームにも伝達されて、地面からの衝撃が分散されるので、機体フレームの強度の向上を図ることができる。
　縦フレームは、ステップをフロアよりも高い位置に設ける為の既存の部材と言ってよいので、既存の部材である縦フレームを有効に利用することにより、構造の簡素化の面で有利である。 According to the present invention, when an impact from the ground during running is transmitted to the body frame via the rear wheels, the rear axle case, and the suspension spring, the impact from the ground is transferred to the vertical frame via the spring bearing member. Since the shock is transmitted and the impact from the ground is dispersed, the strength of the body frame can be improved.
Since the vertical frame can be said to be an existing member for providing the step at a position higher than the floor, effective use of the vertical frame, which is an existing member, is advantageous in terms of structural simplification.
　本発明において、前記縦フレームの下部が、前記バネ受け部材と前記機体フレームとに亘って取り付けられていると好適である。 In the present invention, it is preferable that the lower portion of the vertical frame is attached across the spring receiving member and the body frame.
　本発明によると、縦フレームの下部がバネ受け部材と機体フレームとに亘って取り付けられることにより、縦フレームがバネ受け部材と機体フレームとの取り付けの補強部材となるので、機体フレーム及びバネ受け部材の強度向上の面で有利である。 According to the present invention, the lower part of the vertical frame is attached across the spring receiving member and the body frame, so that the vertical frame serves as a reinforcing member for attaching the spring receiving member and the body frame. It is advantageous in terms of strength improvement.
　本発明において、前記バネ受け部材は、前記機体フレームの右の側部から右方に向けて延出され、且つ、前記機体フレームの左の側部から左方に向けて延出されるように、前記機体フレームの下部に取り付けられた本体部と、前記本体部における前記機体フレームの右の側部から右方に向けて延出された部分と前記機体フレームの右の側部とに亘って取り付けられた右の取付部と、前記本体部における前記機体フレームの左の側部から左方に向けて延出された部分と前記機体フレームの左の側部とに亘って取り付けられた左の取付部と、を有していると好適である。 In the present invention, the spring receiving member extends rightward from the right side portion of the body frame and extends leftward from the left side portion of the body frame, A body portion attached to a lower portion of the body frame, a portion extending rightward from the right side portion of the body frame in the body portion, and a right side portion of the body frame. and a left mounting portion mounted over a portion of the body portion extending leftward from the left side portion of the body frame and the left side portion of the body frame. It is preferable to have a part and
　本発明によると、バネ受け部材は、本体部と右及び左の取付部とを有して、機体フレームの下部、右及び左の側部に取り付けられる。これにより、バネ受け部材の機体フレームへの取付強度を向上させることができるので、機体フレーム及びバネ受け部材の強度向上の面で有利である。 According to the present invention, the spring receiving member has a body portion and right and left mounting portions and is mounted on the lower, right and left side portions of the body frame. As a result, the mounting strength of the spring receiving member to the body frame can be improved, which is advantageous in terms of improving the strength of the body frame and the spring receiving member.
　本発明において、前記縦フレームの下部が、前記機体フレームの上部と、前記機体フレームの側部と、前記本体部における前記機体フレームの側部から延出された部分とに亘って取り付けられることにより、前記バネ受け部材と前記機体フレームとに亘って取り付けられていると好適である。 In the present invention, the lower portion of the vertical frame is attached over the upper portion of the body frame, the side portion of the body frame, and the portion of the body portion that extends from the side portion of the body frame. , is preferably attached across the spring receiving member and the body frame.
　本発明によると、縦フレームの下部がバネ受け部材と機体フレームとに亘って取り付けられることにより、縦フレームがバネ受け部材と機体フレームとの取り付けの補強部材となるので、機体フレーム及びバネ受け部材の強度向上の面で有利である。
　縦フレームの下部が機体フレームの上部に取り付けられることにより、ステップ及びステップフレームから縦フレームに掛かる負荷が、機体フレームに無理なく掛かるようになるので、ステップ及びステップフレームの支持強度の向上の面で有利である。 According to the present invention, the lower part of the vertical frame is attached across the spring receiving member and the body frame, so that the vertical frame serves as a reinforcing member for attaching the spring receiving member and the body frame. It is advantageous in terms of strength improvement.
By attaching the lower part of the vertical frame to the upper part of the body frame, the load applied to the vertical frame from the step and the step frame is applied to the body frame without difficulty, so the support strength of the step and the step frame is improved. Advantageous.
　本発明において、フロアが、前記機体フレームに設けられ、前記ステップが、前記フロアよりも高い位置に設けられ、前記フロアを下側から支持するフロアフレームが、前記機体フレームに設けられており、前記ステップフレームの右前部と前記フロアフレームの右後部とに亘って、上下方向に沿って取り付けられた右の連結フレームと、前記ステップフレームの左前部と前記フロアフレームの左後部とに亘って、上下方向に沿って取り付けられた左の連結フレームとが備えられていると好適である。 In the present invention, a floor is provided on the body frame, the step is provided at a position higher than the floor, a floor frame supporting the floor from below is provided on the body frame, and the A right connecting frame mounted along the vertical direction across the right front portion of the step frame and the right rear portion of the floor frame A left connecting frame mounted along the direction is preferably provided.
　本発明によると、フロアを下側から支持するフロアフレームが機体フレームに設けられている場合、ステップフレームの右前部及び左前部と、フロアフレームの右後部及び左後部とに亘って、右及び左の連結フレームが取り付けられるので、ステップフレームの支持強度の向上の面で有利であり、フロアフレームの支持強度の向上の面で有利である。 According to the present invention, when the body frame is provided with a floor frame that supports the floor from below, the right and left sides of the step frame extend over the right and left front portions of the step frame and the right and left rear portions of the floor frame. Since the connecting frame is attached, it is advantageous in terms of improving the supporting strength of the step frame and also in terms of improving the supporting strength of the floor frame.
　本発明において、前記ステップフレームの右前部の下方又は左前部の下方に設けられた燃料タンクが備えられ、前記右又は左の連結フレームが、前記燃料タンクに対して横外側の位置を上下方向に沿って配置されていると好適である。 In the present invention, a fuel tank is provided below the right front portion or the left front portion of the step frame, and the right or left connecting frame is positioned laterally outside the fuel tank in the vertical direction. is preferably arranged along the
　水田作業機では、ステップ（ステップフレーム）の右前部の下方又は左前部の下方に、燃料タンクが設けられることがある。
　本発明によると、右又は左の連結フレームが、燃料タンクに対して横外側の位置を上下方向に沿って配置されているので、右又は左の連結フレームが燃料タンクの保護部材として機能することになり、燃料タンクの破損防止の面で有利である。
　連結フレームは、ステップフレーム及びフロアフレームの支持強度を向上させる機能に加えて、燃料タンクの保護部材としての機能も有するので、部材の兼用化により、構造の簡素化の面で有利である。 A paddy field work machine is sometimes provided with a fuel tank below the right front portion or the left front portion of a step (step frame).
According to the present invention, the right or left connecting frame is arranged laterally outside the fuel tank along the vertical direction, so that the right or left connecting frame functions as a fuel tank protection member. This is advantageous in terms of preventing damage to the fuel tank.
In addition to the function of improving the support strength of the step frame and the floor frame, the connecting frame also functions as a protective member for the fuel tank.
　本発明において、下方に向けて突出した複数の突出部が、前記ステップの下部に設けられ、前記突出部が前記ステップフレームに載置されることにより、前記ステップが前記ステップフレームに支持されていると好適である。 In the present invention, a plurality of projecting portions projecting downward are provided at the lower portion of the step, and the step is supported by the step frame by placing the projecting portions on the step frame. and is suitable.
　本発明によると、ステップの突出部がステップフレームに載置されることにより、ステップが安定してステップフレームに支持される。 According to the present invention, the step is stably supported by the step frame by placing the projection of the step on the step frame.
　本発明において、下方に向けて入り込む凹部が、前記突出部の上部に形成され、ボルトが、前記凹部に入り込み、前記突出部と前記ステップフレームとに亘って取り付けられることにより、前記ステップが前記ステップフレームに連結されていると好適である。 In the present invention, a recess that enters downward is formed in the upper portion of the protrusion, and a bolt enters the recess and is attached across the protrusion and the step frame, whereby the step is It is preferably connected to the frame.
　本発明によると、ステップとステップフレームとが接触する部分にボルトが取り付けられて、ステップがステップフレームに連結されるので、ステップがステップフレームに安定して連結される。ボルトがステップの凹部（突出部）に入り込む状態となり、ボルトがステップから上側に出ることが少ないので、ステップに立つ作業者にとって違和感が少ない。 According to the present invention, the bolt is attached to the portion where the step and the step frame contact each other, and the step is connected to the step frame, so that the step is stably connected to the step frame. Since the bolt enters the concave portion (protruding portion) of the step and rarely protrudes upward from the step, the worker standing on the step does not feel uncomfortable.
　本発明において、前記ステップは、前ステップと、前記前ステップの後部に連なる後ステップとを有し、前記ステップフレームは、前記前ステップを下側から支持する前ステップフレームと、前記後ステップを下側から支持する後ステップフレームとを有しており、前記後ステップ及び前記後ステップフレームが設けられないことにより、田面に農用資材を供給可能な農用資材供給装置を設ける為の設置領域が、前記前ステップ及び前記前ステップフレームに対して後側に形成されると好適である。 In the present invention, the step has a front step and a rear step connected to the rear portion of the front step, and the step frame includes a front step frame supporting the front step from below and the rear step from below. and a rear step frame for supporting from the side, and since the rear step and the rear step frame are not provided, the installation area for installing the agricultural material supply device capable of supplying the agricultural material to the paddy field is reduced to the above It is preferably formed on the rear side with respect to the front step and the front step frame.
　水田作業機では、同じ機種において、田面に農用資材を供給可能な農用資材供給装置を装備する型式と、農用資材供給装置を装備しない型式とが生産されることがある。
　本発明によると、ステップが前ステップと後ステップとを有し、ステップフレームが前ステップフレームと後ステップフレームとを有している。
　これにより、農用資材供給装置を装備しない型式を生産する場合は、ステップ（ステップフレーム）において、前ステップ（前ステップフレーム）及び後ステップ（後ステップフレーム）を設ければよい。これにより、広いステップを得ることができる。 Among paddy field work machines, the same model may be produced in a model equipped with an agricultural material supply device capable of supplying agricultural materials to the paddy field and a model not equipped with the agricultural material supply device.
According to the invention, a step has a pre-step and a post-step, and a step-frame has a pre-step-frame and a post-step-frame.
Thus, when producing a model that is not equipped with an agricultural material supply device, a front step (front step frame) and a rear step (rear step frame) may be provided in a step (step frame). This makes it possible to obtain wide steps.
　農用資材供給装置を装備する型式を生産する場合、ステップ（ステップフレーム）において、前ステップ（前ステップフレーム）を設け、後ステップ（後ステップフレーム）を設けなければよい。これにより、後ステップ（後ステップフレーム）の部分に、農用資材供給装置を設ける為の設置領域が形成されるので、農用資材供給装置を設置領域に無理なく設置することができる。 When producing a model equipped with an agricultural material supply device, in the step (step frame), the front step (front step frame) should be provided and the rear step (rear step frame) should not be provided. As a result, an installation area for installing the agricultural material supply device is formed in the rear step (rear step frame) portion, so that the agricultural material supply device can be installed in the installation area without difficulty.
　本発明によると、ステップ（ステップフレーム）において、後ステップ（後ステップフレーム）を設ける又は設けないことにより、農用資材供給装置を装備する型式と農用資材供給装置を装備しない型式とを無理なく生産することができるようになって、水田作業機の生産性を向上させることができる。 According to the present invention, by providing or not providing a rear step (rear step frame) in a step (step frame), a type equipped with an agricultural material supply device and a type not equipped with an agricultural material supply device can be produced without difficulty. As a result, the productivity of the paddy field work machine can be improved.
乗用型田植機の左側面図である。It is a left side view of a riding type rice transplanter. 乗用型田植機の平面図である。It is a top view of a riding-type rice transplanter. ステップの付近の平面図である。It is a top view near a step. ステップの付近の背面図である。It is a rear view near a step. 右及び左のフロアフレームの付近の平面図である。FIG. 4 is a plan view of the vicinity of the right and left floor frames; 機体フレーム、前ステップフレーム及び後ステップフレームの付近の平面図である。FIG. 4 is a plan view of the body frame, the front step frame, and the rear step frame. 機体フレーム、フロアフレーム、前ステップフレーム及び後ステップフレームの付近の左側面図である。Fig. 3 is a left side view of the vicinity of the body frame, floor frame, front step frame and rear step frame; バネ受け部材及びサスペンションバネの付近の縦断正面図である。FIG. 3 is a longitudinal front view of the vicinity of a spring receiving member and a suspension spring; バネ受け部材の付近の横断平面図である。FIG. 5 is a cross-sectional plan view of the vicinity of the spring receiving member; 燃料タンクの付近の右側面図である。It is a right side view near a fuel tank. 右ステップ及び左ステップの斜視図である。FIG. 4 is a perspective view of a right step and a left step; 右ステップ及び左ステップの平面図である。It is a top view of a right step and a left step. 右ステップ及び左ステップの底面図である。It is a bottom view of a right step and a left step. 右ステップ及び左ステップの付近の縦断正面図である。It is a longitudinal front view near the right step and the left step. 腰掛け部の右脚部及び左脚部の付近の縦断左側面図である。It is a longitudinal left side view near the right leg part and the left leg part of a seat part. 後ステップの平面図である。FIG. 11 is a plan view of the rear step; 後ステップの底面図である。It is a bottom view of a back step. 後ステップの縦断背面図である。It is a longitudinal rear view of a rear step. 後ステップの平面図である。FIG. 11 is a plan view of the rear step; 横ステップの斜視図である。FIG. 10 is a perspective view of a lateral step; 横ステップの平面図である。FIG. 4 is a plan view of a lateral step; 横ステップの右側面図である。It is a right view of a horizontal step. ボンネットの右側面図である。It is a right view of a bonnet. ボンネットの左側面図である。It is a left view of a bonnet. 右及び左のサイドパネルの縦断正面図である。It is a longitudinal front view of right and left side panels. 右のサイドパネルの開口部及び左のサイドパネルの開口部を示す図である。FIG. 10 shows a right side panel opening and a left side panel opening; エンジン及びミッションケースの付近の左側面図である。It is a left side view near an engine and a transmission case. エンジン及びミッションケースの付近の平面図である。It is a top view near an engine and a transmission case. 発明の実施の第１別形態において、施肥装置の付近の縦断正面図である。In the 1st alternative form of implementation of invention, it is a vertical front view near a fertilizing apparatus. 発明の実施の第１別形態において、施肥装置の付近の背面図である。In the 1st alternative form of implementation of invention, it is a rear view near a fertilizing apparatus. 発明の実施の第１別形態において、施肥装置の付近の左側面図である。In the 1st alternative form of implementation of invention, it is a left side view of the vicinity of a fertilizing apparatus. 発明の実施の第１別形態において、施肥装置の付近の縦断左側面図である。In the 1st alternative form of implementation of invention, it is a longitudinal left side view of the vicinity of a fertilizing apparatus.
　図１～図３２に水田作業機の一例である乗用型田植機が示されており、図１～図３２において、Ｆは前方向を示し、Ｂは後方向を示し、Ｕは上方向を示し、Ｄは下方向を示し、Ｒは右方向を示し、Ｌは左方向を示している。 1 to 32 show a riding-type rice transplanter that is an example of a paddy field work machine. In FIGS. 1 to 32, F indicates the forward direction, B indicates the rearward direction, and U indicates the upward direction. , D indicates the downward direction, R indicates the right direction, and L indicates the left direction.
（乗用型田植機の全体構成）
　図１及び図２に示すように、走行用の右及び左の前輪１、走行用の右及び左の後輪２により、機体である機体フレーム３が支持されている。リンク機構４が機体フレーム３の後部から後方に向けて延出されて、作業装置である苗植付装置５がリンク機構４の後部に支持されている。 (Overall configuration of ride-on rice transplanter)
As shown in FIGS. 1 and 2, a body frame 3 as a body is supported by right and left front wheels 1 for running and right and left rear wheels 2 for running. A link mechanism 4 extends rearward from the rear portion of the body frame 3 , and a seedling planting device 5 as a working device is supported on the rear portion of the link mechanism 4 .
　図１及び図５に示すように、ミッションケース２５が、機体フレーム３の前部に連結されており、平面視で枠状に構成された支持フレーム４２が、ミッションケース２５の前部に連結されて前方に向けて延出されている。 As shown in FIGS. 1 and 5 , the mission case 25 is connected to the front portion of the body frame 3 , and a support frame 42 having a frame shape in plan view is connected to the front portion of the mission case 25 . and extends forward.
　エンジン４９が支持フレーム４２に支持されて、機体フレーム３の前部に設けられており、エンジン４９を収容するボンネット５８が設けられている。前輪１を操向操作する操縦ハンドル５９が、ボンネット５８の後方に設けられている。 An engine 49 is supported by the support frame 42 and provided in the front part of the body frame 3, and a bonnet 58 that accommodates the engine 49 is provided. A steering handle 59 for steering the front wheels 1 is provided behind the bonnet 58 .
　図１及び図２に示すように、フロア３８が、機体フレーム３に設けられており、ステップ４３が、フロア３８よりも高い位置に配置されるように機体フレーム３の後部に設けられている。運転座席６０が、ステップ４３の前部の左右中央部に配置され、腰掛け部８７がステップ４３に設けられている。 As shown in FIGS. 1 and 2 , the floor 38 is provided on the body frame 3 , and the step 43 is provided on the rear part of the body frame 3 so as to be positioned higher than the floor 38 . A driver's seat 60 is arranged in the left-right central part of the front part of the step 43 , and a seat part 87 is provided on the step 43 .
（苗植付装置及び予備苗のせ台の構成）
　図１及び図２に示すように、苗植付装置５は、リンク機構４の後部に支持された４個の植付伝動ケース６と、植付伝動ケース６の後部の右部及び左部に回転可能に支持された回転ケース７と、回転ケース７に支持された一対の植付アーム８と、複数のフロート９と、苗のせ台１０とを有して、８条植え型式に構成されている。 (Structure of seedling planting device and spare seedling tray)
As shown in FIGS. 1 and 2, the seedling planting device 5 includes four planting transmission cases 6 supported at the rear of the link mechanism 4, and four rear right and left parts of the planting transmission case 6. It has a rotating case 7 rotatably supported, a pair of planting arms 8 supported by the rotating case 7, a plurality of floats 9, and a seedling placement base 10, and is configured in an eight-row planting type. there is
　右及び左の支持フレーム６１が、支持フレーム４２の右部及び左部に連結され、フロア３８の右前部の横外方及び左前部の横外方を、上方に向けて延出されており、予備苗のせ台６２が、支持フレーム６１の上部に取り付けられている。予備苗のせ台６３が、支持フレーム６１の下部に取り付けられており、予備苗のせ台６４が、予備苗のせ台６３の前部に上下に揺動可能に取り付けられ、予備苗のせ台６５が、予備苗のせ台６３の後部に上下に揺動可能に取り付けられている。 The right and left support frames 61 are connected to the right and left portions of the support frame 42 and extend upward laterally outward of the right front portion and laterally outward of the left front portion of the floor 38, A spare seedling mount 62 is attached to the top of the support frame 61 . A preliminary seedling loading table 63 is attached to the lower part of the support frame 61, a preliminary seedling loading table 64 is attached to the front part of the preliminary seedling loading table 63 so as to be able to swing up and down, and a preliminary seedling loading table 65 is It is attached to the rear part of the spare seedling placing table 63 so as to be able to swing up and down.
（機体フレームの構成）
　図５，６，７に示すように、右及び左の機体フレーム３が前後方向に沿って配置されており、機体フレーム３は断面正方形状の角パイプにより構成されている。右及び左の連結部１１が、機体フレーム３の前部に下向きに連結されており、右及び左のフレーム１２が連結部１１の下部と機体フレーム３の前後中間部とに亘って連結されている。ミッションケース２５が、機体フレーム３の前部及び連結部１１に連結されている。 (Composition of machine frame)
As shown in FIGS. 5, 6 and 7, the right and left body frames 3 are arranged along the front-rear direction, and the body frames 3 are made of square pipes having a square cross section. The right and left connecting portions 11 are connected downward to the front portion of the body frame 3 , and the right and left frames 12 are connected across the lower portion of the connecting portion 11 and the front and rear intermediate portions of the body frame 3 . there is A mission case 25 is connected to the front portion of the body frame 3 and the connecting portion 11 .
　右及び左の平板状の縦フレーム１３、右及び左の角パイプ状の縦フレーム１４，１５，１６が、機体フレーム３に連結されており、機体フレーム３から上方に向けて延出されている。右及び左の角パイプ状の横フレーム１７が、縦フレーム１３，１４，１５の上部に亘って前後方向に沿って連結されている。右及び左の角パイプ状の横フレーム１８が、縦フレーム１５，１６の上部に亘って前後方向に沿って連結されている。 Right and left flat plate-shaped vertical frames 13 and right and left square pipe-shaped vertical frames 14, 15, and 16 are connected to the body frame 3 and extend upward from the body frame 3. . Right and left rectangular pipe-shaped horizontal frames 17 are connected along the front-rear direction over the upper portions of the vertical frames 13 , 14 , 15 . Right and left rectangular pipe-shaped horizontal frames 18 are connected along the front-rear direction over the upper portions of the vertical frames 15 and 16 .
　角パイプ状の横フレーム１９が、機体フレーム３及び縦フレーム１３の下部に亘って左右方向に沿って連結されている。角パイプ状の横フレーム２１が、横フレーム１７に亘って左右方向に沿って連結され、角パイプ状の横フレーム２２が、縦フレーム１６の上部に亘って左右方向に沿って連結されている。アングル状の横フレーム２３（図８参照）が、機体フレーム３の後部に亘って左右方向に沿って連結されている。 A square pipe-shaped horizontal frame 19 is connected along the left-right direction across the lower part of the body frame 3 and the vertical frame 13 . A rectangular pipe-shaped horizontal frame 21 is connected along the horizontal direction across the horizontal frame 17 , and a rectangular pipe-shaped horizontal frame 22 is connected along the horizontal direction across the upper portion of the vertical frame 16 . An angle-shaped horizontal frame 23 (see FIG. 8) is connected along the left-right direction across the rear portion of the body frame 3 .
　リンク機構４の上リンク４ａが、左右方向に沿った軸芯Ｐ１周りに上下に揺動可能に、縦フレーム１６の上部に支持されて、後方に向けて延出されている。リンク機構４の下リンク４ｂが、左右方向に沿った軸芯Ｐ２周りに上下に揺動可能に、機体フレーム３の後部に支持されて、後方に向けて延出されている。 The upper link 4a of the link mechanism 4 is supported on the upper portion of the vertical frame 16 and extends rearward so as to be vertically swingable about an axis P1 extending in the left-right direction. A lower link 4b of the link mechanism 4 is supported by the rear portion of the body frame 3 and extends rearward so as to be vertically swingable about an axis P2 extending in the left-right direction.
　油圧シリンダ２４が、縦フレーム１６における軸芯Ｐ１の位置と、リンク機構４の下リンク４ｂの後部とに亘って接続されており、油圧シリンダ２４の伸縮作動によりリンク機構４が上下に揺動操作される。
　以上の構成により、リンク機構４（上リンク４ａ及び下リンク４ｂ）が、機体フレーム３の後部（縦フレーム１６）に支持されて、後方に向けて延出されている。 A hydraulic cylinder 24 is connected across the position of the axis P1 of the vertical frame 16 and the rear part of the lower link 4b of the link mechanism 4, and the link mechanism 4 is operated to swing up and down by the expansion and contraction operation of the hydraulic cylinder 24. be done.
With the above configuration, the link mechanism 4 (upper link 4a and lower link 4b) is supported by the rear portion (vertical frame 16) of the body frame 3 and extends rearward.
（前輪及び後輪の支持の構成）
　図１及び図５に示すように、右及び左の前車軸ケース２６が、ミッションケース２５の右部及び左部に連結されて、右及び左の横外方に延出されており、右及び左の前輪１が前車軸ケース２６に操向可能に支持されている。 (Configuration of support for front and rear wheels)
As shown in FIGS. 1 and 5, the right and left front axle cases 26 are connected to the right and left portions of the transmission case 25 and extend laterally outward on the right and left sides. A left front wheel 1 is steerably supported by a front axle case 26 .
　図１及び図７に示すように、右及び左の後輪２を支持する後車軸ケース２７が設けられている。右及び左のブラケット２８が、機体フレーム３の前後中間部に連結されて、右及び左のアッパーリンク２９が、左右方向に沿った軸芯Ｐ３周りに上下に揺動可能に、ブラケット２８に支持されて、後方に向けて延出されている。右及び左のロアリンク３０が、左右方向に沿った軸芯Ｐ４周りに上下に揺動可能に、連結部１１の下部に支持されて、後方に向けて延出されている。 As shown in FIGS. 1 and 7, rear axle cases 27 are provided to support the right and left rear wheels 2 . The right and left brackets 28 are connected to the front-rear intermediate portion of the body frame 3, and the right and left upper links 29 are supported by the brackets 28 so as to be capable of swinging up and down around an axis P3 extending in the left-right direction. and extends rearward. The right and left lower links 30 are supported by the lower portion of the connecting portion 11 and extend rearward so as to be vertically swingable about an axis P4 extending in the left-right direction.
　図７及び図８に示すように、アッパーリンク２９の後部が、後車軸ケース２７の前部の上部に上下揺動可能に接続されており、ロアリンク３０の後部が、後車軸ケース２７の前部の下部の接続ピン２０に上下揺動可能に接続されている。 As shown in FIGS. 7 and 8, the rear portion of the upper link 29 is connected to the upper portion of the front portion of the rear axle case 27 so as to be able to swing vertically, and the rear portion of the lower link 30 is connected to the front portion of the rear axle case 27. It is connected to a connection pin 20 at the bottom of the part so that it can swing up and down.
　ブラケット３１が、右の機体フレーム３の後部に下向きに連結されている。ラテラルロッド３２が、前後方向に沿った軸芯Ｐ５周りに上下に揺動可能に、ブラケット３１に支持されて、左方に向けて延出されており、ラテラルロッド３２の左部が、後車軸ケース２７の後部に上下揺動可能に接続されている。 A bracket 31 is connected downward to the rear part of the right body frame 3 . The lateral rod 32 is supported by a bracket 31 so as to be vertically swingable about an axis P5 extending in the front-rear direction, and extends leftward. It is connected to the rear part of the case 27 so that it can swing up and down.
　右及び左のバネ受け部材３３が、機体フレーム３の後部に取り付けられて、右及び左のコイル状のサスペンションバネ３４が、バネ受け部材３３と後車軸ケース２７の接続ピン２０とに亘って取り付けられており、後車軸ケース２７がサスペンションバネ３４を介して機体フレーム３に支持されている。 Right and left spring receiving members 33 are attached to the rear of the body frame 3 and right and left coiled suspension springs 34 are attached across the spring receiving members 33 and connecting pins 20 of the rear axle case 27 . A rear axle case 27 is supported by the body frame 3 via a suspension spring 34 .
　以上の構成により、右及び左のアッパーリンク２９、右及び左のロアリンク３０、ラテラルロッド３２、右及び左のサスペンションバネ３４により、５リンク型式のサスペンション機構が構成されており、後車軸ケース２７がサスペンション機構を介して機体フレーム３に支持されている。 With the above configuration, the right and left upper links 29, the right and left lower links 30, the lateral rods 32, and the right and left suspension springs 34 constitute a five-link type suspension mechanism. is supported by the body frame 3 via a suspension mechanism.
（バネ受け部材の構成）
　図８及び図９に示すように、バネ受け部材３３は、平板により構成されており、左右方向に沿った本体部３３ａと、本体部３３ａの右前部及び右後部が上方に向けて折り曲げられた右の取付部３３ｂと、本体部３３ａの左前部及び左後部が上方に向けて折り曲げられた左の取付部３３ｃとを有している。 (Structure of Spring Receiving Member)
As shown in FIGS. 8 and 9, the spring receiving member 33 is formed of a flat plate, and is bent upward at a main body portion 33a extending in the left-right direction and a right front portion and a right rear portion of the main body portion 33a. It has a right mounting portion 33b and a left mounting portion 33c in which the left front portion and the left rear portion of the body portion 33a are bent upward.
　バネ受け部材３３の本体部３３ａは、機体フレーム３の下部３ａに溶接によって取り付けられており、機体フレーム３の右の側部３ｂから右方に向けて延出され、機体フレーム３の左の側部３ｃから左方に向けて延出されている。 A body portion 33 a of the spring receiving member 33 is attached to the lower portion 3 a of the body frame 3 by welding, extends rightward from the right side portion 3 b of the body frame 3 , and extends to the left side of the body frame 3 . It extends leftward from the portion 3c.
　バネ受け部材３３の右の取付部３３ｂが、機体フレーム３の右の側部３ｂに溶接によって取り付けられている。これにより、バネ受け部材３３の本体部３３ａにおける機体フレーム３の右の側部３ｂから右方に向けて延出された部分と、機体フレーム３の右の側部３ｂとに亘って、バネ受け部材３３の右の取付部３３ｂが取り付けられている。 The right attachment portion 33b of the spring receiving member 33 is attached to the right side portion 3b of the body frame 3 by welding. As a result, the spring receiving member 33 extends rightward from the right side portion 3b of the body frame 3 in the body portion 33a of the spring receiving member 33 and the right side portion 3b of the body frame 3. A right attachment portion 33b of the member 33 is attached.
　バネ受け部材３３の左の取付部３３ｃが、機体フレーム３の左の側部３ｃに溶接によって取り付けられている。これにより、バネ受け部材３３の本体部３３ａにおける機体フレーム３の左の側部３ｃから左方に向けて延出された部分と、機体フレーム３の左の側部３ｃとに亘って、バネ受け部材３３の左の取付部３３ｃが取り付けられている。 The left attachment portion 33c of the spring bearing member 33 is attached to the left side portion 3c of the body frame 3 by welding. As a result, the spring receiving member 33 has a portion extending leftward from the left side portion 3c of the body frame 3 in the body portion 33a of the spring receiving member 33 and the left side portion 3c of the body frame 3. The left attachment portion 33c of the member 33 is attached.
　右及び左の平板状の連結部材３５が設けられており、円筒部３５ａが連結部材３５に下向きに連結されている。右及び左のロッド３６が、後車軸ケース２７の接続ピン２０に取り付けられて上方に向けて延出されており、ロッド３６が上下方向に沿って摺動可能に連結部材３５の円筒部３５ａに挿入されている。 Right and left flat connecting members 35 are provided, and cylindrical portions 35a are connected to the connecting members 35 downward. The right and left rods 36 are attached to the connection pins 20 of the rear axle case 27 and extend upward. inserted.
　連結部材３５の円筒部３５ａ及びロッド３６が、サスペンションバネ３４の内部に配置されて、サスペンションバネ３４の上部が連結部材３５に当て付けられており、連結部材３５がボルト３７によりバネ受け部材３３の本体部３３ａに連結されている。
　右及び左のバネ受け部材３３、右及び左の連結部材３５は、左右対称形状であり、互いに同じ構造を有している。 The cylindrical portion 35a and the rod 36 of the connecting member 35 are arranged inside the suspension spring 34, the upper portion of the suspension spring 34 is abutted against the connecting member 35, and the connecting member 35 is attached to the spring receiving member 33 by the bolt 37. It is connected to the body portion 33a.
The right and left spring receiving members 33 and the right and left connecting members 35 are symmetrical and have the same structure.
（縦フレームとバネ受け部材との取り付けの構成）
　図８及び図９に示すように、縦フレーム１５（前述の（機体フレームの構成）及び図６，７を参照）の下部が切り欠かれて、縦フレーム１５の下部に、横向き部１５ａと、横向き部１５ａから下方に延出された延出部１５ｂとが形成されており、スリット１５ｃが延出部１５ｂに形成されている。 (Arrangement of Attachment of Vertical Frame and Spring Receiving Member)
As shown in FIGS. 8 and 9, the lower portion of the vertical frame 15 (see the above-mentioned (construction of the body frame) and FIGS. 6 and 7) is cut out, and the horizontal portion 15a and the An extending portion 15b extending downward from the lateral portion 15a is formed, and a slit 15c is formed in the extending portion 15b.
　縦フレーム１５の横向き部１５ａが、機体フレーム３の上部３ｄに当て付けられて溶接によって取り付けられている。縦フレーム１５のスリット１５ｃに、バネ受け部材３３の左の取付部３３ｃが挿入され、縦フレーム１５の延出部１５ｂの横部が、機体フレーム３の左の側部３ｃに当て付けられて溶接によって取り付けられている。縦フレーム１５の延出部１５ｂの下部が、バネ受け部材３３の本体部３３ａに当て付けられて溶接によって取り付けられている。 The lateral portion 15a of the vertical frame 15 is attached to the upper portion 3d of the body frame 3 by welding. The left mounting portion 33c of the spring receiving member 33 is inserted into the slit 15c of the vertical frame 15, and the horizontal portion of the extending portion 15b of the vertical frame 15 is brought into contact with the left side portion 3c of the body frame 3 and welded. is installed by The lower portion of the extension portion 15b of the vertical frame 15 is attached to the body portion 33a of the spring bearing member 33 by welding.
　右及び左の縦フレーム１５の下部は、左右対称形状であり、互いに同じ構造を有している。右の縦フレーム１５の下部と右のバネ受け部材３３との取付構造と、左の縦フレーム１５の下部と左のバネ受け部材３３との取付構造とは、左右対称形状であり、互いに同じ構造を有している。 The lower portions of the right and left vertical frames 15 are symmetrical and have the same structure. The mounting structure between the lower portion of the right vertical frame 15 and the right spring receiving member 33 and the mounting structure between the lower portion of the left vertical frame 15 and the left spring receiving member 33 are symmetrical and have the same structure. have.
　以上の構成により、縦フレーム１５の下部が、機体フレーム３の上部３ｄと、機体フレーム３の側部３ｂ，３ｃと、バネ受け部材３３の本体部３３ａにおける機体フレーム３の側部３ｂ，３ｃから延出された部分とに亘って取り付けられており、縦フレーム１５の下部が、バネ受け部材３３と機体フレーム３とに亘って取り付けられている。縦フレーム１５が、バネ受け部材３３に取り付けられ、バネ受け部材３３から上方に向けて延出されている。 With the above configuration, the lower portion of the vertical frame 15 is arranged from the upper portion 3d of the body frame 3, the side portions 3b and 3c of the body frame 3, and the side portions 3b and 3c of the body frame 3 in the body portion 33a of the spring bearing member 33. The lower portion of the vertical frame 15 is attached across the spring receiving member 33 and the body frame 3 . The vertical frame 15 is attached to the spring bearing member 33 and extends upward from the spring bearing member 33 .
（フロアの全体構成）
　図１及び図２に示すように、フロア３８は、前フロア３９と、右フロア４０と、左フロア４１とを有している。ゴム製のフロアマット（図示せず）が、右フロア４０及び左フロア４１に亘って載置される。 (Overall composition of the floor)
As shown in FIGS. 1 and 2, the floor 38 has a front floor 39 , a right floor 40 and a left floor 41 . A rubber floor mat (not shown) is placed across the right floor 40 and the left floor 41 .
　前フロア３９は、合成樹脂により一体的に構成されており、ボンネット５８に対して右側の領域及び左側の領域に亘って設けられて、左右対称形状に構成されている。前フロア３９における前輪１の上方の部分に、複数の桟部が横方向に沿って間隔を空けながら並ぶように設けられた開口部３９ａが開口されている。作業者は、前フロア３９の開口部３９ａを通して、前輪１（図１参照）を目視することができる。 The front floor 39 is integrally made of synthetic resin, is provided over the right side area and the left side area with respect to the bonnet 58, and has a bilaterally symmetrical shape. An opening 39a is formed in a portion of the front floor 39 above the front wheel 1 so that a plurality of crosspieces are arranged side by side at intervals. The operator can see the front wheel 1 (see FIG. 1) through the opening 39a of the front floor 39. As shown in FIG.
　右フロア４０が前フロア３９の右後部に連なるように設けられ、左フロア４１が前フロア３９の左後部に連なるように設けられている。右フロア４０及び左フロア４１は、合成樹脂により一体的に構成されて、左右対称形状に構成されている。 A right floor 40 is provided so as to be continuous with the right rear portion of the front floor 39 , and a left floor 41 is provided so as to be continuous with the left rear portion of the front floor 39 . The right floor 40 and the left floor 41 are integrally made of synthetic resin and have a bilaterally symmetrical shape.
　右フロア４０及び左フロア４１における前輪１の上方の部分に、複数の桟部が横方向に沿って間隔を空けながら並ぶように設けられた開口部４０ａ，４１ａが開口されている。
作業者は、右フロア４０及び左フロア４１の開口部４０ａ，４１ａを通して、前輪１（図１参照）を目視することができる。 Openings 40a and 41a are formed in portions of the right floor 40 and the left floor 41 above the front wheel 1 so that a plurality of crosspieces are arranged side by side with a space therebetween.
The operator can see the front wheel 1 (see FIG. 1) through the openings 40a and 41a of the right floor 40 and the left floor 41. As shown in FIG.
（フロアを支持するフロアフレームの構成）
　図５，６，７に示すように、右及び左のフロアフレーム５０が、右及び左の機体フレーム３と支持フレーム４２とに亘って設けられており、右及び左のフロアフレーム５０は左右対称形状に構成されている。 (Structure of floor frame supporting floor)
As shown in FIGS. 5, 6 and 7, right and left floor frames 50 are provided across the right and left fuselage frame 3 and the support frame 42, the right and left floor frames 50 being bilaterally symmetrical. configured in shape.
　フロアフレーム５０において、左右方向に沿った横フレーム５１，５２が設けられ、前後方向に沿った３個のフレーム５３が、横フレーム５１，５２に亘って連結されており、横フレーム５１，５２の端部が機体フレーム３に連結されている。作業者が乗降する際の足掛け部７０（図１及び図２参照）が、横フレーム５１及び最外側のフレーム５３に亘って連結されている。 The floor frame 50 is provided with lateral frames 51 and 52 extending in the left-right direction, and three frames 53 extending in the front-rear direction are connected across the lateral frames 51 and 52. The ends are connected to the body frame 3 . A footrest 70 (see FIGS. 1 and 2) is connected across the lateral frame 51 and the outermost frame 53 when a worker gets on and off.
　前後方向に沿った２個のフレーム５４が、横フレーム５２に連結されて前方に向けて延出され、左右方向に沿った横フレーム５５が、最外側のフレーム５３とフレーム５４とに亘って連結されている。前後方向に沿ったフレーム５６が、横フレーム５５に連結されて前方に向けて延出され、左右方向に沿った横フレーム５７が、フレーム５４，５６の前部に亘って連結されており、横フレーム５７の端部が支持フレーム４２の前部に連結されている。 Two frames 54 extending in the front-rear direction are connected to the horizontal frame 52 and extended forward, and a horizontal frame 55 extending in the left-right direction connects the outermost frame 53 and the frame 54 . It is A frame 56 extending in the front-rear direction is connected to the horizontal frame 55 and extends forward, and a horizontal frame 57 extending in the left-right direction is connected across the front portions of the frames 54 and 56 to extend forward. The ends of frame 57 are connected to the front of support frame 42 .
　以上の構成により、フロア３８において、前フロア３９の右部と右フロア４０とが、右のフロアフレーム５０に取り付けられて、右のフロアフレーム５０により下側から支持されている。前フロア３９の左部と左フロア４１とが、左のフロアフレーム５０に取り付けられて、左のフロアフレーム５０により下側から支持されている。 With the above configuration, in the floor 38, the right portion of the front floor 39 and the right floor 40 are attached to the right floor frame 50 and supported by the right floor frame 50 from below. The left portion of the front floor 39 and the left floor 41 are attached to the left floor frame 50 and supported by the left floor frame 50 from below.
（ステップの全体構成）
　図１，２，３に示すように、ステップ４３は、前ステップである右ステップ４４と、前ステップである左ステップ４５と、右及び左の後ステップ４６と、右及び左の後ステップ４７と、右及び左の横ステップ４８とを有している。 (Overall configuration of steps)
As shown in FIGS. 1, 2 and 3, the steps 43 include a front right step 44, a front left step 45, right and left rear steps 46, and right and left rear steps 47. , right and left lateral steps 48 .
（ステップにおける右ステップ及び左ステップの構成）
　図１１及び図１２に示すように、右ステップ４４及び左ステップ４５は、上面部４４ａ，４５ａと、前面部４４ｂ，４５ｂと、横面部４４ｃ，４４ｃと、延出部４４ｄ，４５ｄとを有して、合成樹脂により一体的に構成されており、一部分を除いて左右対称形状に構成されている。 (Configuration of right step and left step in step)
As shown in FIGS. 11 and 12, the right step 44 and left step 45 have upper surface portions 44a and 45a, front surface portions 44b and 45b, lateral surface portions 44c and 44c, and extension portions 44d and 45d. , and is integrally made of synthetic resin, and has a symmetrical shape except for a portion.
　開口部４４ｅ，４５ｅが上面部４４ａ，４５ａに開口されており、複数の桟部４４ｆ，４５ｆが、横方向に沿って間隔を空けながら並ぶように開口部４４ｅ，４５ｅに設けられている。開口部４４ｅ，４５ｅは後輪２（図１参照）の上方に位置しており、作業者は、右ステップ４４及び左ステップ４５の開口部４４ｅ，４５ｅを通して、後輪２を目視することができる。 The openings 44e and 45e are opened in the upper surface parts 44a and 45a, and a plurality of crosspieces 44f and 45f are provided in the openings 44e and 45e so as to be arranged side by side with a space therebetween. The openings 44e and 45e are located above the rear wheel 2 (see FIG. 1), and the operator can see the rear wheel 2 through the openings 44e and 45e of the right step 44 and left step 45. .
　前面部４４ｂ，４５ｂが、上面部４４ａ，４５ａの前部に接続されて下方に向けて延出されている。横面部４４ｃ，４５ｃが、上面部４４ａ，４５ａの横部と前面部４４ｂ，４５ｂの横部とに亘って接続されている。延出部４４ｄ，４５ｄが、前面部４４ｂ，４５ｂの下部に接続されて前方に向けて延出されている。上面部４４ａ，４５ａと前面部４４ｂ，４５ｂとに亘って、切り欠き部４４ｇ，４５ｇが設けられている。 The front parts 44b, 45b are connected to the front parts of the upper surface parts 44a, 45a and extend downward. The lateral surface portions 44c, 45c are connected across the lateral portions of the upper surface portions 44a, 45a and the lateral portions of the front surface portions 44b, 45b. The extending portions 44d and 45d are connected to the lower portions of the front portions 44b and 45b and extend forward. Notch portions 44g and 45g are provided across the upper surface portions 44a and 45a and the front surface portions 44b and 45b.
　上面部４４ａ，４５ａの横部に、壁部４４ｈ，４５ｈが、上面部４４ａ，４５ａよりも高くなるように前後方向に沿って形成されている。上面部４４ａ，４５ａの後部に、壁部４４ｉ，４５ｉが、上面部４４ａ，４５ａよりも高くなるように左右方向に沿って形成されている。
　右ステップ４４において、前面部４４ｂの横部に、前方に張り出す張り出し部４４ｑが設けられており、張り出し部４４ｑの上部に、開口部４４ｒが開口されている。 Wall portions 44h and 45h are formed on the lateral portions of the upper surface portions 44a and 45a along the front-rear direction so as to be higher than the upper surface portions 44a and 45a. Wall portions 44i and 45i are formed in the left-right direction at rear portions of the upper surface portions 44a and 45a so as to be higher than the upper surface portions 44a and 45a.
In the right step 44, a projecting portion 44q projecting forward is provided on the lateral portion of the front surface portion 44b, and an opening portion 44r is formed in the upper portion of the projecting portion 44q.
　図１１～図１４に示すように、上面部４４ａ，４５ａの下面部及び延出部４４ｄ，４５ｄの下部に、下方に向けて突出した複数の突出部４４ｊ，４５ｊ，４４ｋ，４５ｋが設けられており、縦壁状の多数のリブ４４ｍ，４５ｍが、突出部４４ｊ，４５ｊ，４４ｋ，４５ｋに亘って、前後方向及び左右方向、斜め方向に沿って設けられている。 As shown in FIGS. 11 to 14, a plurality of projecting portions 44j, 45j, 44k, and 45k projecting downward are provided on the lower surface portions of the upper surface portions 44a and 45a and the lower portions of the extension portions 44d and 45d. A large number of vertical wall- like ribs 44m, 45m are provided along the front-back direction, the left-right direction, and the oblique direction over the projecting portions 44j, 45j, 44k, 45k.
　突出部４４ｊ，４５ｊは、上面部４４ａ，４５ａ及び延出部４４ｄ，４５ｄから下方に向けて凹むように形成されて、突出部４４ｊ，４５ｊの上部に下方に向けて入り込む凹部が形成されて、突出部４４ｊ，４５ｊが上方に向けて開放されている。突出部４４ｊ，４５ｊの底部に、小さな開口部４４ｎ，４５ｎ及び水抜き部４４ｐ，４５ｐが開口されている。 The projecting portions 44j and 45j are formed so as to be recessed downward from the upper surface portions 44a and 45a and the extending portions 44d and 45d. Projections 44j and 45j are open upward. Small openings 44n, 45n and draining portions 44p, 45p are formed at the bottoms of the projecting portions 44j, 45j.
　突出部４４ｋ，４５ｋは、上面部４４ａ，４５ａ及び延出部４４ｄ，４５ｄから下方に向けて延出された円筒状に形成されて、下方に向けて開放されている。突出部４４ｊ，４５ｊの底部と突出部４４ｋ，４５ｋの下端部とが、同じ高さの位置に設定されており、リブ４４ｍ，４５ｍの下端部が、突出部４４ｊ，４５ｊの底部及び突出部４４ｋ，４５ｋの下端部よりも、高い位置に設定されている。 The protruding portions 44k, 45k are formed in a cylindrical shape extending downward from the upper surface portions 44a, 45a and the extending portions 44d, 45d, and are open downward. The bottoms of the protrusions 44j and 45j and the lower ends of the protrusions 44k and 45k are set at the same height, and the lower ends of the ribs 44m and 45m are aligned with the bottoms of the protrusions 44j and 45j and the protrusion 44k. , 45k.
（ステップにおける後ステップの構成）
　図１６，１７，１８に示すように、右の後ステップ４６と左の後ステップ４６とは、同じものであり、後ステップ４６は、合成樹脂により一体的に構成されて、左右対称形状に構成されている。 (Construction of a post-step in a step)
As shown in FIGS. 16, 17 and 18, the right rear step 46 and the left rear step 46 are the same, and the rear step 46 is integrally made of synthetic resin and has a bilaterally symmetrical shape. It is
　後ステップ４６において、本体部４６ａが設けられ、開口部４６ｂが本体部４６ａの左右中央部に開口されており、複数の桟部４６ｃが、横方向に沿って間隔を空けながら並ぶように、開口部４６ｂに設けられている。開口部４６ｂは後輪２の上方に位置しており、作業者は、後ステップ４６の開口部４６ｂを通して、後輪２（図１参照）を目視することができる。 In the rear step 46, a main body portion 46a is provided, an opening 46b is opened in the left and right central portion of the main body portion 46a, and a plurality of crosspieces 46c are opened so as to be lined up with intervals along the lateral direction. It is provided in the portion 46b. The opening 46b is located above the rear wheel 2, and the operator can see the rear wheel 2 (see FIG. 1) through the opening 46b of the rear step 46. As shown in FIG.
　本体部４６ａの下部に、下方に向けて突出した複数の突出部４６ｄ，４６ｅが設けられており、縦壁状の多数のリブ４６ｆが、突出部４６ｄ，４６ｅに亘って、前後方向及び左右方向に沿って設けられている。 A plurality of projecting portions 46d and 46e projecting downward are provided at the lower portion of the main body portion 46a. are set along.
　突出部４６ｄは、本体部４６ａから下方に向けて凹むように形成されて、突出部４６ｄの上面部分に下方に向けて入り込む凹部が形成されて、突出部４６ｄが上方に向けて開放されている。突出部４６ｄの底部に、小さな開口部４６ｇ及び水抜き部４６ｈが開口されている。 The projecting portion 46d is formed so as to be recessed downward from the main body portion 46a. . A small opening 46g and a drainage portion 46h are opened at the bottom of the projecting portion 46d.
　突出部４６ｅは、本体部４６ａから下方に向けて延出された円筒状に形成されて、下方に向けて開放されている。突出部４６ｄの底部と、突出部４６ｅの下端部と、リブ４６ｆの下端部が、同じ高さの位置に設定されている。 The projecting portion 46e is formed in a cylindrical shape extending downward from the main body portion 46a and is open downward. The bottom of the projecting portion 46d, the lower end of the projecting portion 46e, and the lower end of the rib 46f are set at the same height.
　図１９に示すように、右の後ステップ４７と左の後ステップ４７とは同じものであり、後ステップ４７は、合成樹脂により一体的に構成されて左右対称形状に構成されている。
　後ステップ４７は、後ステップ４６の本体部４６ａ、開口部４６ｂ、桟部４６ｃ及び突出部４６ｄと同じ本体部４７ａ、開口部４７ｂ、桟部４７ｃ及び突出部４７ｄが設けられて、後ステップ４６の突出部４６ｅ、リブ４６ｆ、開口部４６ｇ及び水抜き部４６ｈと同じ突出部（図示せず）、リブ（図示せず）、開口部（図示せず）及び水抜き部（図示せず）が設けられている。 As shown in FIG. 19, the right rear step 47 and the left rear step 47 are the same, and the rear step 47 is integrally formed of synthetic resin and has a bilaterally symmetrical shape.
The rear step 47 is provided with the same body portion 47a, opening 47b, crosspiece 47c and projection 47d as the main body 46a, opening 46b, crosspiece 46c and projection 46d of the rear step 46. The same projections (not shown), ribs (not shown), openings (not shown) and drains (not shown) as the projections 46e, ribs 46f, openings 46g and drains 46h are provided. It is
　ステップ４７において、本体部４７ａの後部に、壁部４７ｉが、本体部４７ａよりも高くなるように左右方向に沿って形成されている。後ステップ４７は、壁部４７ｉを有することを除いて、後ステップ４６と同じ形状である。 In the step 47, a wall portion 47i is formed along the left-right direction at the rear portion of the body portion 47a so as to be higher than the body portion 47a. The rear step 47 has the same shape as the rear step 46 except that it has a wall portion 47i.
（ステップにおける横ステップの構成）
　図２０，２１，２２に示すように、横ステップ４８は、互いに分割された第１部分４８ａと第２部分４８ｂとを有しており、第１部分４８ａ及び第２部分４８ｂは合成樹脂により一体的に構成されている。右及び左の横ステップ４８において、第１部分４８ａ及び第２部分４８ｂは同じものである。 (Structure of horizontal step in step)
As shown in FIGS. 20, 21 and 22, the horizontal step 48 has a first portion 48a and a second portion 48b which are separated from each other, and the first portion 48a and the second portion 48b are integrally made of synthetic resin. is structured. In the right and left lateral steps 48, the first portion 48a and the second portion 48b are identical.
　第１部分４８ａは、桟部が前後方向及び左右方向に沿って格子状に配置されて構成されており、第１部分４８ａの横部に、下方に向けて突出する壁部４８ｃが前後方向に沿って形成されている。 The first portion 48a is configured by crosspieces arranged in a grid pattern along the front-rear direction and the left-right direction. formed along.
　第２部分４８ｂは、桟部が前後方向及び左右方向に沿って格子状に配置されて構成されており、第２部分４８ｂの横部に、上方及び下方に向けて突出する壁部４８ｄが前後方向に沿って形成されている。 The second portion 48b is constructed by arranging crosspieces in a grid pattern along the front-rear direction and the left-right direction. formed along the direction
　横ステップ４８を右の横ステップ４８として使用する場合、壁部４８ｃが右の横外側に位置して下向きになるように、第１部分４８ａを設定する。第２部分４８ｂを、第１部分４８ａに対して右側に配置して、一方の壁部４８ｄが上向きとなり、他方の壁部４８ｄが下向きになるように設定する。 When the lateral step 48 is used as the right lateral step 48, the first portion 48a is set so that the wall portion 48c is located on the right lateral outer side and faces downward. The second portion 48b is arranged on the right side of the first portion 48a so that one wall portion 48d faces upward and the other wall portion 48d faces downward.
　横ステップ４８を左の横ステップ４８として使用する場合、第１部分４８ａを、右の第１部分４８ａに対して前後向きを入れ換えて（前後反転させて）、壁部４８ｃが左の横外側に位置して下向きになるように設定する。
　第２部分４８ｂを、右の第２部分４８ｂに対して上下向きを入れ換えて（上下反転させて）、第１部分４８ａに対して左側に配置し、一方の壁部４８ｄが下向きとなり、他方の壁部４８ｄが上向きになるように設定する。 When the lateral step 48 is used as the left lateral step 48, the first portion 48a is reversed (reversed) with respect to the right first portion 48a so that the wall portion 48c faces the left lateral outside. Position it so that it faces downwards.
The second portion 48b is turned upside down with respect to the right second portion 48b (upside down) and arranged on the left side of the first portion 48a, with one wall portion 48d facing downward and the other wall portion 48b facing downward. The wall portion 48d is set to face upward.
（ステップを支持するステップフレームの全体構成）
　図６及び図７に示すように、ステップ４３を下側から支持するステップフレーム６６が設けられ、ステップフレーム６６が機体フレーム３に支持されている。 (Overall Configuration of Step Frame Supporting Step)
As shown in FIGS. 6 and 7 , a step frame 66 is provided to support the step 43 from below, and the step frame 66 is supported by the body frame 3 .
　ステップフレーム６６は、図６及び図７に示すように、前ステップである右ステップ４４及び左ステップ４５を下側から支持する前ステップフレーム６７と、後ステップ４６，４７を下側から支持する後ステップフレーム６８とを有しており、図１，４，３１に示すように、横ステップ４８を下側から支持する横ステップフレーム６９を有している。 As shown in FIGS. 6 and 7, the step frame 66 includes a front step frame 67 that supports the right step 44 and the left step 45 as front steps from below, and a rear step frame 67 that supports the rear steps 46 and 47 from below. 1, 4 and 31, it has a horizontal step frame 69 that supports the horizontal step 48 from below.
（右ステップ及び左ステップを支持する前ステップフレームの構成）
　図６及び図７に示すように、前ステップフレーム６７において、左右方向に沿った横フレーム７１，７２が設けられており、横フレーム７１に取付ブラケット７１ａが取り付けられている。前後方向に沿ったフレーム７３が、横フレーム７１，７２に亘って連結されている。 (Configuration of front step frame supporting right step and left step)
As shown in FIGS. 6 and 7, the front step frame 67 is provided with lateral frames 71 and 72 along the left-right direction, and the lateral frame 71 is attached with a mounting bracket 71a. A frame 73 extending in the front-rear direction is connected across the horizontal frames 71 and 72 .
　前後方向に沿ったフレーム７４が、横フレーム７１，７２の横端部に亘って連結されており、横フレーム７２から前方に向けて延出されている。前後方向に沿ったフレーム７５が、横フレーム７２に連結されて前方に向けて延出されている。左右方向に沿った横フレーム７６が、フレーム７４，７５の前端部に亘って連結されている。前後方向に沿った受けフレーム７７が、横フレーム７１に連結されて後方に向けて延出されている。 A frame 74 extending in the front-rear direction is connected across the lateral ends of the lateral frames 71 and 72 and extends forward from the lateral frame 72 . A frame 75 extending in the front-rear direction is connected to the horizontal frame 72 and extends forward. A horizontal frame 76 extending in the left-right direction is connected across the front ends of the frames 74 and 75 . A receiving frame 77 extending in the front-rear direction is connected to the horizontal frame 71 and extends rearward.
　以上のように構成された前ステップフレーム６７において、横フレーム７１が、右及び左の縦フレーム１５（前述の（機体フレームの構成）を参照）の上部と、右及び左の横フレーム１７とに連結されている。横フレーム７２が、右及び左の縦フレーム１４の上部と右及び左の横フレーム１７とに連結されている。
　これにより、ステップフレーム６６（前ステップフレーム６７）が、縦フレーム１５の上部に取り付けられ、縦フレーム１４の上部に取り付けられている。 In the front step frame 67 configured as described above, the horizontal frame 71 is attached to the upper portion of the right and left vertical frames 15 (see the above-mentioned (construction of the body frame)) and the right and left horizontal frames 17. Concatenated. A horizontal frame 72 is connected to the upper portions of the right and left vertical frames 14 and the right and left horizontal frames 17 .
Thereby, the step frame 66 (front step frame 67) is attached to the upper portion of the vertical frame 15 and attached to the upper portion of the vertical frame 14. As shown in FIG.
（フロアフレームとステップフレームとの関係）
　図６及び図７に示すように、右及び左のフロアフレーム５０が機体フレーム３の前部に設けられている。前ステップフレーム６７（ステップフレーム６６）が、フロアフレーム５０よりも高い位置に配置されるように、機体フレーム３の後部に設けられている。 (Relationship between floor frame and step frame)
As shown in FIGS. 6 and 7 , right and left floor frames 50 are provided on the front portion of the body frame 3 . A front step frame 67 (step frame 66 ) is provided at the rear portion of the body frame 3 so as to be arranged at a position higher than the floor frame 50 .
　複数の右の連結フレーム７９が、ステップフレーム６６（前ステップフレーム６７）の右前部（右の横フレーム７６）と、フロアフレーム５０の右後部（右のフロアフレーム５０の横フレーム５１）とに亘って、上下方向に沿って取り付けられている。 A plurality of right connecting frames 79 extend over the right front portion (right lateral frame 76) of the step frame 66 (front step frame 67) and the right rear portion of the floor frame 50 (lateral frame 51 of the right floor frame 50). are installed along the vertical direction.
　複数の左の連結フレーム７９が、ステップフレーム６６（前ステップフレーム６７）の左前部（左の横フレーム７６）と、フロアフレーム５０の左後部（左のフロアフレーム５０の横フレーム５１）とに亘って、上下方向に沿って取り付けられている。 A plurality of left connecting frames 79 extend over the left front portion (left lateral frame 76) of the step frame 66 (front step frame 67) and the left rear portion of the floor frame 50 (lateral frame 51 of the left floor frame 50). are installed along the vertical direction.
　図１０に示すように、燃料タンク８０が設けられている。燃料タンク８０の前下部が、右のフロアフレーム５０の横フレーム５１に取り付けられ、燃料タンク８０の後上部が、前ステップフレーム６７の横フレーム７２の右部に取り付けられている。これにより、燃料タンク８０が、ステップフレーム６６（前ステップフレーム６７）の右前部の下方に設けられている。
　右の最外側の連結フレーム７９が、燃料タンク８０に対して右の横外側の位置を上下方向に沿って配置されている。 As shown in FIG. 10, a fuel tank 80 is provided. The lower front portion of the fuel tank 80 is attached to the lateral frame 51 of the right floor frame 50 , and the upper rear portion of the fuel tank 80 is attached to the right portion of the lateral frame 72 of the front step frame 67 . Thereby, the fuel tank 80 is provided below the right front portion of the step frame 66 (the front step frame 67).
The right outermost connecting frame 79 is arranged along the vertical direction at the right laterally outer position with respect to the fuel tank 80 .
（前ステップフレームにおける右ステップ及び左ステップの支持の構成）
　前述の（ステップにおける右ステップ及び左ステップの構成）及び図１１～図１４に示すように、右ステップ４４及び左ステップ４５において、突出部４４ｊ，４５ｊ，４４ｋ，４５ｋ及びリブ４４ｍ，４５ｍ、桟部４４ｆ，４５ｆが設けられている。 (Configuration of support for right step and left step in front step frame)
As described above (configuration of right step and left step in steps) and shown in FIGS. 44f and 45f are provided.
　図６及び図１４に示すように、右ステップ４４及び左ステップ４５が前ステップフレーム６７に載置されると、右ステップ４４及び左ステップ４５の突出部４４ｊ，４５ｊ，４４ｋ，４５ｋが、前ステップフレーム６７のフレーム７３，７５及び受けフレーム７７に載置される。右ステップ４４及び左ステップ４５のリブ４４ｍ，４５ｍ及び桟部４４ｆ，４５ｆが、前ステップフレーム６７の横フレーム７１，７２に載置される。
　これにより、右ステップ４４及び左ステップ４５が、前ステップフレーム６７（ステップフレーム６６）により下側から支持される。 As shown in FIGS. 6 and 14, when the right step 44 and left step 45 are placed on the front step frame 67, the protrusions 44j, 45j, 44k, and 45k of the right step 44 and left step 45 are placed on the front step. It is mounted on the frames 73 , 75 of the frame 67 and the receiving frame 77 . The ribs 44m, 45m and crosspieces 44f, 45f of the right step 44 and left step 45 are placed on the lateral frames 71, 72 of the front step frame 67. As shown in FIG.
As a result, the right step 44 and the left step 45 are supported from below by the front step frame 67 (step frame 66).
　図１４に示すように、右ステップ４４及び左ステップ４５の突出部４４ｊ，４５ｊにおいて、ボルト８１が、右ステップ４４及び左ステップ４５の突出部４４ｊ，４５ｊに入り込んで、右ステップ４４及び左ステップ４５の突出部４４ｊ，４５ｊと、前ステップフレーム６７のフレーム７３，７５及び受けフレーム７７とに亘って取り付けられている。
　これにより、右ステップ４４及び左ステップ４５が、前ステップフレーム６７（ステップフレーム６６）に連結される。 As shown in FIG. 14, the bolt 81 enters the projections 44j and 45j of the right step 44 and the left step 45 at the projections 44j and 45j of the right step 44 and the left step 45, and the frames 73 and 75 of the front step frame 67 and the receiving frame 77.
Thereby, the right step 44 and the left step 45 are connected to the front step frame 67 (step frame 66).
（後ステップを支持する後ステップフレームの構成）
　図６及び図７に示すように、後ステップフレーム６８において、左右方向に沿った横フレーム８２が設けられて、前後方向に沿った複数の受けフレーム８３が、横フレーム８２に連結されて前方及び後方に向けて延出されている。取付ブラケット８４が横フレーム８２に取り付けられ、取付フレーム８５が横フレーム８２に連結されて前方に向けて延出されている。 (Configuration of Rear Step Frame for Supporting Rear Step)
As shown in FIGS. 6 and 7, the rear step frame 68 is provided with a horizontal frame 82 extending in the left-right direction, and a plurality of receiving frames 83 extending in the front-rear direction are connected to the horizontal frame 82 to connect to the front and rear frames. It extends backwards. A mounting bracket 84 is attached to the horizontal frame 82, and a mounting frame 85 is connected to the horizontal frame 82 and extends forward.
　前ステップフレーム６７及び後ステップフレーム６８において、後ステップフレーム６８の取付ブラケット８４が、横フレーム１８（前述の（機体フレームの構成）を参照）の後部にボルト連結されている。後ステップフレーム６８の取付フレーム８５が、前ステップフレーム６７の横フレーム７１の取付ブラケット７１ａ（前述の（右ステップ及び左ステップを支持する前ステップフレームの構成）を参照）にボルト連結されている。 In the front step frame 67 and the rear step frame 68, the mounting bracket 84 of the rear step frame 68 is bolted to the rear portion of the lateral frame 18 (see (Construction of body frame) described above). The mounting frame 85 of the rear step frame 68 is bolted to the mounting bracket 71a of the lateral frame 71 of the front step frame 67 (see the above-mentioned (configuration of front step frame supporting right step and left step)).
　これにより、後ステップフレーム６８が、前ステップフレーム６７に取り付けられ、後ステップフレーム６８が、前ステップフレーム６７を介して、縦フレーム１５（前述の（機体フレームの構成）を参照）の上部に取り付けられ、縦フレーム１４の上部に取り付けられている。 As a result, the rear step frame 68 is attached to the front step frame 67, and the rear step frame 68 is attached to the upper portion of the vertical frame 15 (see the above-mentioned (construction of the body frame)) via the front step frame 67. and attached to the top of the vertical frame 14 .
（後ステップフレームにおける後ステップの支持の構成）
　前述の（ステップにおける後ステップの構成）及び図１６～図１９に示すように、後ステップ４６，４７において、突出部４６ｄ，４７ｄ，４６ｅ及びリブ４６ｆ、桟部４６ｃ，４７ｃが設けられている。 (Configuration of support for rear step in rear step frame)
16 to 19, projecting portions 46d, 47d, 46e, ribs 46f, and crosspieces 46c, 47c are provided in the rear steps 46, 47, as described above (configuration of the rear steps in the steps) and shown in FIGS.
　後ステップ４６，４７が後ステップフレーム６８に載置されると、後ステップ４６，４７の突出部４６ｄ，４７ｄ，４６ｅ及びリブ４６ｆ、桟部４６ｃ，４７ｃが、後ステップフレーム６８の受けフレーム８３に載置される。
　これにより、後ステップ４６，４７が、後ステップフレーム６８（ステップフレーム６６）により下側から支持される。 When the rear steps 46 and 47 are placed on the rear step frame 68, the protrusions 46d, 47d and 46e, the ribs 46f and the beams 46c and 47c of the rear steps 46 and 47 are placed on the receiving frame 83 of the rear step frame 68. be placed.
Thereby, the rear steps 46 and 47 are supported from below by the rear step frame 68 (step frame 66).
　前述の（前ステップフレームにおける右ステップ及び左ステップの支持の構成）及び図１４に示す右ステップ４４及び左ステップ４５と同様に、後ステップ４６，４７においても、ボルト８１が、後ステップ４６，４７の突出部４６ｄ，４７ｄに入り込んで、後ステップ４６，４７の突出部４６ｄ，４７ｄと、後ステップフレーム６８の受けフレーム８３とに亘って取り付けられている。
　これにより、後ステップ４６，４７が、後ステップフレーム６８（ステップフレーム６６）に連結される。 Similar to the above-described (structure of supporting the right step and the left step in the front step frame) and the right step 44 and the left step 45 shown in FIG. , and is attached across the projections 46d, 47d of the rear steps 46, 47 and the receiving frame 83 of the rear step frame 68. As shown in FIG.
Thereby, the rear steps 46 and 47 are connected to the rear step frame 68 (step frame 66).
（横ステップを支持する横ステップフレームの構成）
　図１，２，３，４，３１に示すように、パイプ材が折り曲げられて形成された右及び左の手摺りフレーム８６が設けられている。 (Structure of lateral step frame supporting lateral step)
As shown in FIGS. 1, 2, 3, 4 and 31, right and left handrail frames 86 are provided which are formed by bending a piece of pipe material.
　手摺りフレーム８６の前の下部８６ａが、フロアフレーム５０の横フレーム５１（前述の（フロアを支持するフロアフレームの構成）及び図５を参照）に連結されている。手摺りフレーム８６の後の下部８６ｂが、前ステップフレーム６７の横フレーム７１（前述の（右ステップ及び左ステップを支持する前ステップフレームの構成）及び図６を参照）に連結されている。 A front lower portion 86a of the handrail frame 86 is connected to the horizontal frame 51 of the floor frame 50 (see the above-mentioned (floor frame structure for supporting the floor) and FIG. 5). A rear lower portion 86b of the handrail frame 86 is connected to the lateral frame 71 of the front step frame 67 (see the above-mentioned (configuration of the front step frame supporting the right and left steps) and FIG. 6).
　右及び左の横ステップフレーム６９が、前後方向に沿って配置されて、手摺りフレーム８６の後の下部８６ｂに連結されている。横ステップ４８（第１部分４８ａ及び第２部分４８ｂ）が、横ステップフレーム６９にボルト連結されている。 The right and left lateral step frames 69 are arranged along the front-rear direction and connected to the rear lower part 86b of the handrail frame 86. The lateral step 48 (the first portion 48a and the second portion 48b) is bolted to the lateral step frame 69. As shown in FIG.
　これにより、右の手摺りフレーム８６及び横ステップフレーム６９と、左の手摺りフレーム８６及び横ステップフレーム６９とは、左右対称形状に構成されている。右及左の手摺りフレーム８６が、右ステップ４４の右部に対して横外側の位置及び左ステップ４５の左部に対して横外側の位置に配置され、上方に向けて延出されている。 As a result, the right handrail frame 86 and the lateral step frame 69 and the left handrail frame 86 and the lateral step frame 69 are configured in a bilaterally symmetrical shape. Right and left handrail frames 86 are positioned laterally outward relative to the right portion of the right step 44 and laterally outward relative to the left portion of the left step 45 and extend upward. .
（ステップにおける右ステップ及び左ステップ、後ステップ、横ステップの配置状態）
　図３，１１，１２に示すように、右ステップ４４及び左ステップ４５は、互いに接するように左右方向に沿って並べて設けられ、右フロア４０及び左フロア４１の後部（前述の（フロアの全体構成）及び図２を参照）に連なるように設けられる。 (Arrangement of right step, left step, rear step, and side step)
As shown in FIGS. 3, 11 and 12, the right step 44 and the left step 45 are arranged side by side in the left-right direction so as to be in contact with each other, and the rear portions of the right floor 40 and the left floor 41 (the above-described (overall configuration of the floor)). ) and FIG. 2).
　右ステップ４４の上面部４４ａと左ステップ４５の上面部４５ａとは、同じ高さに配置される。右ステップ４４の壁部４４ｉの上端部と左ステップ４５の壁部４５ｈ，４５ｉの上端部とは、同じ高さに配置される。 The upper surface portion 44a of the right step 44 and the upper surface portion 45a of the left step 45 are arranged at the same height. The upper end of the wall 44i of the right step 44 and the upper ends of the walls 45h and 45i of the left step 45 are arranged at the same height.
　右ステップ４４により燃料タンク８０が覆われて、燃料タンク８０の右前部が右ステップ４４の張り出し部４４ｑに入り込むのであり、燃料タンク８０の給油口８０ａが、右ステップ４４の開口部４４ｒに入り込んで上方に向けて突出する。 The fuel tank 80 is covered by the right step 44, and the right front portion of the fuel tank 80 enters the projecting portion 44q of the right step 44, and the fuel filler port 80a of the fuel tank 80 enters the opening 44r of the right step 44. protrude upwards.
　運転座席６０は、右ステップ４４及び左ステップ４５の切り欠き部４４ｇ，４５ｇに配置されて、ステップ４３（右ステップ４４及び左ステップ４５）の前部の左右中央部に配置される。 The driver's seat 60 is arranged in the cutouts 44g and 45g of the right step 44 and left step 45, and arranged in the left-right central part of the front part of the step 43 (right step 44 and left step 45).
　図３に示すように、右及び左の後ステップ４６は、互いに接するように左右方向に沿って並べて設けられ、右ステップ４４の後部（壁部４４ｉ）及び左ステップ４５の後部（壁部４５ｉ）に連なるように設けられる。右及び左の後ステップ４７は、互いに接するように左右方向に沿って並べて設けられ、後ステップ４６の後部に連なるように設けられる。 As shown in FIG. 3, the right and left rear steps 46 are arranged side by side in the left-right direction so as to be in contact with each other. It is provided so as to be continuous with. The right and left rear steps 47 are arranged side by side in the left-right direction so as to be in contact with each other, and are provided so as to be connected to the rear portion of the rear step 46 .
　後ステップ４６及び後ステップ４７（本体部４６ａ，４７ａ）の上面は、右ステップ４４及び左ステップ４５の壁部４４ｈ，４５ｈ，４４ｉ，４５ｉの上端部と、同じ高さに配置される。 The upper surfaces of the rear step 46 and the rear step 47 ( body portions 46a, 47a) are arranged at the same height as the upper ends of the wall portions 44h, 45h, 44i, 45i of the right step 44 and left step 45.
　図３及び図４に示すように、右の横ステップ４８は、右ステップ４４の横部（壁部４４ｈ）及び右の後ステップ４６，４７の横部（壁部４５ｈ）に連なるように設けられ、左の横ステップ４８は、左ステップ４５の横部及び左の後ステップ４６，４７の横部に連なるように設けられる。 As shown in FIGS. 3 and 4, the right lateral step 48 is provided so as to be continuous with the lateral portion (wall portion 44h) of the right step 44 and the lateral portion (wall portion 45h) of the right rear steps 46 and 47. , the left lateral step 48 is provided so as to continue to the lateral portion of the left step 45 and the lateral portions of the left rear steps 46 and 47 .
　横ステップ４８の上面は、後ステップ４６，４７（本体部４６ａ，４７ａ）の上面と、右ステップ４４及び左ステップ４５の壁部４４ｈ，４５ｈ，４４ｉ，４５ｉの上端部と、同じ高さに配置される。横ステップ４８の壁部４８ｄの上端部と後ステップ４７の壁部４７ｉの上端部とは、同じ高さに配置される。 The upper surface of the lateral step 48 is arranged at the same height as the upper surfaces of the rear steps 46, 47 ( body portions 46a, 47a) and the upper ends of the walls 44h, 45h, 44i, 45i of the right step 44 and left step 45. be done. The upper end portion of the wall portion 48d of the lateral step 48 and the upper end portion of the wall portion 47i of the rear step 47 are arranged at the same height.
（腰掛け部の構成）
　図３，４，１４，１５に示すように、腰掛け部８７が設けられている。
　腰掛け部８７は、パイプ材が折り曲げられて構成されており、左右方向に沿った棒状の横部分８７ａと、横部分８７ａの右部から下方に延出された棒状の右脚部８７ｂと、横部分８７ａの左部から下方に延出された棒状の左脚部８７ｃと、右脚部８７ｂ及び左脚部８７ｃの下端部に連結されたアングル状の取付ブラケット８７ｄと、取付ブラケット８７ｄに連結されたボス部８７ｅとを有している。 (Structure of seat)
As shown in FIGS. 3, 4, 14 and 15, a seat 87 is provided.
The seat portion 87 is formed by bending a pipe material, and includes a bar-shaped lateral portion 87a extending in the left-right direction, a bar-shaped right leg portion 87b extending downward from the right portion of the lateral portion 87a, and a lateral portion 87a. A rod-shaped left leg portion 87c extending downward from the left portion of the portion 87a, an angle-shaped mounting bracket 87d connected to the lower ends of the right leg portion 87b and the left leg portion 87c, and an angle-shaped mounting bracket 87d connected to the mounting bracket 87d. and a boss portion 87e.
　図４及び図１４に示すように、腰掛け部８７の右脚部８７ｂの下部が、腰掛け部８７の横部分８７ａの右部よりもステップ４３の左右中央側に位置するように、腰掛け部８７の右脚部８７ｂが折り曲げられている。 As shown in FIGS. 4 and 14, the seat portion 87 is positioned so that the lower portion of the right leg portion 87b of the seat portion 87 is located closer to the center of the step 43 than the right portion of the lateral portion 87a of the seat portion 87 is. The right leg 87b is bent.
　腰掛け部８７の左脚部８７ｃの下部が、腰掛け部８７の横部分８７ａの左部よりもステップ４３の左右中央側に位置するように、腰掛け部８７の左脚部８７ｃが折り曲げられている。これにより、腰掛け部８７の横部分８７ａの横幅Ｗ１が、腰掛け部８７の右脚部８７ｂ及び左脚部８７ｃの下部の横幅Ｗ２よりも大きなものとなっている。 The left leg portion 87c of the seat portion 87 is bent so that the lower portion of the left leg portion 87c of the seat portion 87 is positioned closer to the left and right center of the step 43 than the left portion of the lateral portion 87a of the seat portion 87 is. As a result, the width W1 of the lateral portion 87a of the seat 87 is larger than the width W2 of the lower portions of the right leg 87b and the left leg 87c of the seat 87. As shown in FIG.
（腰掛け部の支持の構成）
　図３，１４，１５に示すように、前ステップフレーム６７（前述の（右ステップ及び左ステップを支持する前ステップフレームの構成）及び図６を参照）の横フレーム７１に、右及び左の取付ブラケット７１ｂが取り付けられており、取付ブラケット７１ｂは、右ステップ４４及び左ステップ４５の開口部４４ｅ，４５ｅの下方に位置している。 (Structure of support for seat)
As shown in FIGS. 3, 14, and 15, the right and left mounting brackets are attached to the lateral frame 71 of the front step frame 67 (see above (Configuration of front step frame supporting right and left steps) and FIG. 6). A bracket 71b is attached, and the attachment bracket 71b is positioned below the openings 44e and 45e of the right step 44 and left step 45. As shown in FIG.
　腰掛け部８７の右の取付ブラケット８７ｄ（右脚部８７ｂの下部）が、右ステップ４４の桟部４４ｆに載置されており、腰掛け部８７の右のボス部８７ｅが、右ステップ４４の開口部４４ｅに挿入されて、横フレーム７１（前ステップフレーム６７）の右の取付ブラケット７１ｂに載置されている。 A right mounting bracket 87 d (lower portion of the right leg portion 87 b ) of the seat portion 87 is placed on the crosspiece 44 f of the right step 44 , and a right boss portion 87 e of the seat portion 87 is mounted on the opening of the right step 44 . 44e and mounted on the right mounting bracket 71b of the lateral frame 71 (front step frame 67).
　腰掛け部８７の左の取付ブラケット８７ｄ（左脚部８７ｃの下部）が、左ステップ４５の桟部４５ｆに載置されており、腰掛け部８７の左のボス部８７ｅが、左ステップ４５の開口部４５ｅに挿入されて、横フレーム７１（前ステップフレーム６７）の左の取付ブラケット７１ｂに載置されている。 The left mounting bracket 87 d (lower part of the left leg 87 c ) of the seat 87 is mounted on the crosspiece 45 f of the left step 45 , and the left boss 87 e of the seat 87 is mounted on the opening of the left step 45 . 45e and mounted on the left mounting bracket 71b of the lateral frame 71 (front step frame 67).
　ボルト８８が、腰掛け部８７のボス部８７ｅに挿入されて、横フレーム７１（前ステップフレーム６７）の取付ブラケット７１ｂに取り付けられている。
　これにより、ボルト８８が、右ステップ４４及び左ステップ４５の開口部４４ｅ，４５ｅにおける隣接する桟部４４ｆ、４５ｆの間を上下方向に沿って配置されて、腰掛け部８７の取付ブラケット８７ｄ（右脚部８７ｂ及び左脚部８７ｃの下部）と、横フレーム７１（前ステップフレーム６７）の取付ブラケット７１ｂとに亘って取り付けられている。 A bolt 88 is inserted into the boss portion 87e of the seat portion 87 and attached to the mounting bracket 71b of the lateral frame 71 (front step frame 67).
As a result, the bolt 88 is arranged along the vertical direction between the adjacent crosspieces 44f and 45f in the openings 44e and 45e of the right step 44 and left step 45, and the mounting bracket 87d (right leg 87b and the lower part of the left leg 87c) and the mounting bracket 71b of the lateral frame 71 (front step frame 67).
　ボルト８８が締め付けられることにより、腰掛け部８７の取付ブラケット８７ｄと、横フレーム７１（前ステップフレーム６７）の取付ブラケット７１ｂとの間に、右ステップ４４及び左ステップ４５の桟部４４ｆ，４５ｆが挟まれて、腰掛け部８７の右脚部８７ｂ及び左脚部８７ｃが、ステップ４３（右ステップ４４及び左ステップ４５）に取り付けられる。 By tightening the bolt 88, the crosspieces 44f and 45f of the right step 44 and the left step 45 are sandwiched between the mounting bracket 87d of the seat portion 87 and the mounting bracket 71b of the lateral frame 71 (front step frame 67). Then, the right leg 87b and left leg 87c of the seat 87 are attached to the step 43 (right step 44 and left step 45).
（腰掛け部の配置状態）
　図１～図４に示すように、側面視及び平面視において、腰掛け部８７が、運転座席６０の後方で、運転座席６０とステップ４３（後ステップ４７）の後端部との間に位置するように、ステップ４３（右ステップ４４及び左ステップ４５）に左右方向に沿って設けられている。 (Arrangement of the seat)
As shown in FIGS. 1 to 4, in side view and plan view, the seat portion 87 is positioned behind the driver's seat 60 and between the driver's seat 60 and the rear end of the step 43 (rear step 47). , the step 43 (the right step 44 and the left step 45) are provided along the horizontal direction.
　平面視及び背面視において、腰掛け部８７（横部分８７ａ）の右端部が、ステップ４３の右端部（右の横ステップ４８）よりもステップ４３の左右中央側に位置し、右ステップ４４の右端部（壁部４４ｈ）よりもステップ４３の左右中央側に位置している。 In plan view and rear view, the right end of the seat portion 87 (lateral portion 87a) is positioned closer to the center of the step 43 than the right end of the step 43 (right lateral step 48), and the right end of the right step 44 It is located on the left-right center side of the step 43 from (the wall portion 44h).
　平面視及び背面視において、腰掛け部８７（横部分８７ａ）の左端部が、ステップ４３の左端部（左の横ステップ４８）よりもステップ４３の左右中央側に位置し、左ステップ４５の左端部（壁部４５ｈ）よりもステップ４３の左右中央側に位置している。 In plan view and rear view, the left end of the seat portion 87 (lateral portion 87a) is positioned closer to the center of the step 43 than the left end of the step 43 (left horizontal step 48), and the left end of the left step 45. It is located on the left-right center side of the step 43 from (the wall portion 45h).
　背面視において、腰掛け部８７の右脚部８７ｂの下部（取付ブラケット８７ｄ）が、ステップ４３（右ステップ４４）において、腰掛け部８７の横部分８７ａの右部よりもステップ４３の左右中央側の部分に取り付けられる。 When viewed from the rear, the lower portion (mounting bracket 87d) of the right leg portion 87b of the seat portion 87 is positioned at the step 43 (right step 44) at a portion on the left-right center side of the step 43 from the right portion of the lateral portion 87a of the seat portion 87. can be attached to
　背面視において、腰掛け部８７の左脚部８７ｃの下部（取付ブラケット８７ｄ）が、ステップ４３（左ステップ４５）において、腰掛け部８７の横部分８７ａの左部よりもステップ４３の左右中央側の部分に取り付けられる。 When viewed from the back, the lower portion (mounting bracket 87d) of the left leg portion 87c of the seat portion 87 is positioned at the step 43 (left step 45) at the left-right center side of the step 43 from the left portion of the lateral portion 87a of the seat portion 87. can be attached to
　背面視において、腰掛け部８７の横部分８７ａの横幅Ｗ１と、腰掛け部８７の右脚部８７ｂ及び左脚部８７ｃの下部の横幅Ｗ２とが、運転座席の横幅Ｗ３よりも大きなものとなっている。腰掛け部８７の横部分８７ａの右部及び右脚部８７ｂが、運転座席６０よりも右の横外方に位置し、腰掛け部８７の横部分８７ａの左部及び左脚部８７ｃが、運転座席６０よりも左の横外方に位置している。 In the rear view, the width W1 of the lateral portion 87a of the seat 87 and the width W2 of the lower portions of the right leg 87b and the left leg 87c of the seat 87 are larger than the width W3 of the driver's seat. . A right portion and a right leg portion 87b of the lateral portion 87a of the seat portion 87 are positioned laterally outward on the right side of the driver’s seat 60, and a left portion and a left leg portion 87c of the lateral portion 87a of the seat portion 87 are located on the driver’s seat. It is located laterally to the left of 60.
（ステップの周囲に設けられる上フレーム及び下フレームの構成）
　図１～図４に示すように、下フレーム８９が、右及び左の手摺りフレーム８６の後部の下部に亘って取り付けられている。下フレーム８９は、パイプ部材が折り曲げられて構成されて、横部分８９ａ、右部分８９ｂ及び左部分８９ｃ、右部分８９ｂ及び左部分８９ｃの端部に連結された高さ調節部である取付ブラケット８９ｄを有している。 (Configuration of upper frame and lower frame provided around step)
As shown in FIGS. 1-4, a lower frame 89 is mounted across the lower rear portion of the right and left handrail frames 86 . The lower frame 89 is constructed by bending a pipe member, and is a mounting bracket 89d which is a height adjusting portion connected to the ends of the lateral portion 89a, the right portion 89b and the left portion 89c, the right portion 89b and the left portion 89c. have.
　下フレーム８９の横部分８９ａは、ステップ４３の後部（後ステップ４７の壁部４７ｉ）の上方の近傍を、左右方向に沿って設けられている。下フレーム８９の右部分８９ｂ及び左部分８９ｃは、ステップ４３の右及び左の横部（横ステップ４８）の上方の近傍を、前後方向に沿って設けられている。下フレーム８９の取付ブラケット８９ｄが、右及び左の手摺りフレーム８６の後部の下部に、ボルトにより取り付けられている。 A lateral portion 89a of the lower frame 89 is provided in the vicinity of the upper portion of the rear portion of the step 43 (the wall portion 47i of the rear step 47) along the left-right direction. A right portion 89b and a left portion 89c of the lower frame 89 are provided above and near the right and left lateral portions (lateral steps 48) of the step 43 along the front-rear direction. Mounting brackets 89d of the lower frame 89 are attached to the lower rear portions of the right and left handrail frames 86 by bolts.
　上フレーム９０が、右及び左の手摺りフレーム８６の後部の上部に亘って取り付けられている。上フレーム９０は、パイプ部材が折り曲げられて構成されて、横部分９０ａ、右部分９０ｂ及び左部分９０ｃ、右部分９０ｂ及び左部分９０ｃの端部に連結された高さ調節部である取付ブラケット９０ｄを有している。 An upper frame 90 is attached over the rear upper portion of the right and left handrail frames 86 . The upper frame 90 is constructed by bending a pipe member, and is a mounting bracket 90d which is a height adjusting portion connected to the ends of the lateral portion 90a, the right portion 90b and the left portion 90c, the right portion 90b and the left portion 90c. have.
　上フレーム９０の横部分９０ａは、下フレーム８９の横部分８９ａから上方に所定間隔を空けた位置に、下フレーム８９の横部分８９ａに沿うように左右方向に沿って設けられている。 The lateral portion 90a of the upper frame 90 is provided along the horizontal direction along the lateral portion 89a of the lower frame 89 at a position spaced upward from the lateral portion 89a of the lower frame 89 by a predetermined distance.
　上フレーム９０の右部分９０ｂ及び左部分９０ｃは、下フレーム８９の右部分８９ｂ及び左部分８９ｃから上方に所定間隔を空けた位置に、下フレーム８９の右部分８９ｂ及び左部分８９ｃに沿うように前後方向に沿って設けられている。 The right portion 90b and the left portion 90c of the upper frame 90 are positioned above the right portion 89b and the left portion 89c of the lower frame 89 at a predetermined distance along the right portion 89b and the left portion 89c of the lower frame 89. It is provided along the front-rear direction.
　上フレーム９０の取付ブラケット９０ｄが、右及び左の手摺りフレーム８６の後部の上部に、ボルトにより取り付けられている。複数のフレーム９１が、上フレーム９０と下フレーム８９とに亘って連結されている。 The mounting brackets 90d of the upper frame 90 are attached to the upper rear portions of the right and left handrail frames 86 with bolts. A plurality of frames 91 are connected across the upper frame 90 and the lower frame 89 .
　側面視及び平面視において、上フレーム９０におけるステップ４３の後部の上方の部分（横部分９０ａ）が、下フレーム８９におけるステップ４３の後部の上方の部分（横部分８９ａ）よりも後側に配置されている。 In a side view and a plan view, the portion above the rear portion of the step 43 (lateral portion 90a) in the upper frame 90 is arranged on the rear side of the portion above the rear portion of the step 43 in the lower frame 89 (lateral portion 89a). ing.
　右及び左の手摺りフレーム８６は、ステップ４３の右端部及び左端部（右及び左の横ステップ４８）の位置で、上フレーム９０及び下フレーム８９に対して前側の位置に設けられている。上フレーム９０は手摺りフレーム８６の上端部よりも低い位置に設けられている。 The right and left handrail frames 86 are provided on the front side of the upper frame 90 and lower frame 89 at the right and left ends of the step 43 (right and left lateral steps 48). The upper frame 90 is provided at a position lower than the upper end of the handrail frame 86 .
　ボルト取付用の複数の開口部（図示せず）が、手摺りフレーム８６に上下方向に沿って開口されている。上フレーム９０及び下フレーム８９の取付ブラケット９０ｄ，８９ｄの取付位置を、手摺りフレーム８６の開口部により上下に変更することによって、上フレーム９０及び下フレーム８９における手摺りフレーム８６の取付位置を上下に変更することができる。 A plurality of bolt mounting openings (not shown) are formed in the handrail frame 86 along the vertical direction. By vertically changing the mounting positions of the mounting brackets 90d and 89d of the upper frame 90 and the lower frame 89 by using the opening of the handrail frame 86, the mounting position of the handrail frame 86 on the upper frame 90 and the lower frame 89 can be changed vertically. can be changed to
（ボンネットの構成）
　図２３及び図２４に示すように、ボンネット５８において、右及び左のライト９２、格子状に形成されたフロントグリル９３及びセンターマスコット９４（図１及び図２参照）が、ボンネット５８の前部に設けられている。ボンネット５８の右側面部に、右のサイドパネル９５が設けられ、ボンネット５８の左側面部に、左のサイドパネル９６が設けられている。 (bonnet configuration)
As shown in FIGS. 23 and 24, the bonnet 58 has right and left lights 92, a grid-shaped front grille 93, and a center mascot 94 (see FIGS. 1 and 2) at the front of the hood 58. is provided. A right side panel 95 is provided on the right side of the bonnet 58 , and a left side panel 96 is provided on the left side of the bonnet 58 .
　右及び左のサイドパネル９５，９６は、外周部を形成する枠部９５ａ，９６ａと、枠部９５ａ，９６ａの前部と後部とに亘って前後方向に沿って接続された枠部９５ｂ，９６ｂとを有しており、枠部９５ａ，９６ａと枠部９５ｂ，９６ｂとの間に、格子状の枠部９５ｃ，９６ｃが設けられている。 The right and left side panels 95 and 96 are composed of frame portions 95a and 96a forming an outer peripheral portion, and frame portions 95b and 96b connected along the front-rear direction across the front and rear portions of the frame portions 95a and 96a. Grid-shaped frame portions 95c and 96c are provided between the frame portions 95a and 96a and the frame portions 95b and 96b.
　右のサイドパネル９５の枠部９５ｃの間に、前後方向に沿って細長い六角形状の右の開口部９５ｄが形成されている。左のサイドパネル９６の枠部９６ｃの間に、前後方向に沿って細長い六角形状の複数の左の開口部９６ｄが形成されている。 Between the frame portions 95c of the right side panel 95, an elongated hexagonal right opening 95d is formed along the front-rear direction. Between the frame portions 96c of the left side panel 96, a plurality of elongated hexagonal left openings 96d are formed along the front-rear direction.
（右及び左のサイドパネルの開口部の構成）
　図２５及び図２６に示すように、右のサイドパネル９５の枠部９５ｃ（開口部９５ｄ）は、左右方向に沿って所定の左右幅を有しており、右のサイドパネル９５の枠部９５ｃの断面形状が、長方形状となっている。 (Configuration of right and left side panel openings)
As shown in FIGS. 25 and 26, the frame portion 95c (opening portion 95d) of the right side panel 95 has a predetermined horizontal width along the horizontal direction. has a rectangular cross section.
　右のサイドパネル９５の開口部９５ｄの外側の縁部９５ｅと内側の縁部９５ｆは、同じ形状の細長い六角形状となっており、右のサイドパネル９５の縁部９５ｅ，９５ｆの細長い六角形状の面積が、右のサイドパネル９５の開口部９５ｄの空気の通過断面積となる。 The outer edge 95e and the inner edge 95f of the opening 95d of the right side panel 95 have the same elongated hexagonal shape. The area is the air passage cross-sectional area of the opening 95 d of the right side panel 95 .
　左のサイドパネル９６の枠部９６ｃ（開口部９６ｄ）は、左右方向に沿って所定の左右幅を有しており、左のサイドパネル９６の枠部９６ｃの断面形状が、Ｖ字形状となっている。 The frame portion 96c (opening portion 96d) of the left side panel 96 has a predetermined horizontal width along the horizontal direction, and the cross-sectional shape of the frame portion 96c of the left side panel 96 is V-shaped. ing.
　左のサイドパネル９６の外側の縁部９６ｅの前後幅ＷＬ１１が、左のサイドパネル９６の内側の縁部９６ｆの前後幅ＷＬ１２よりも大きなものとなっている。左のサイドパネル９６の外側の縁部９６ｅの上下幅ＷＬ２１が、左のサイドパネル９６の内側の縁部９６ｆの上下幅ＷＬ２２よりも大きなものとなっている。 The front-to-rear width WL11 of the outer edge 96e of the left side panel 96 is larger than the front-to-rear width WL12 of the inner edge 96f of the left side panel 96. The vertical width WL21 of the outer edge 96e of the left side panel 96 is larger than the vertical width WL22 of the inner edge 96f of the left side panel 96. As shown in FIG.
　左のサイドパネル９６の開口部９６ｄは、左のサイドパネル９６の開口部９６ｄにおけるボンネット５８の内部側の部分の前後幅ＷＬ１２及び上下幅ＷＬ２２よりも、左のサイドパネル９６の開口部９６ｄにおけるボンネット５８の外部側の部分の前後幅ＷＬ１１及び上下幅ＷＬ２１が大きくなるように、断面視で外広がり状に形成されている。 The opening 96d of the left side panel 96 is wider than the front-to-rear width WL12 and the vertical width WL22 of the inner portion of the bonnet 58 at the opening 96d of the left side panel 96. 58 is formed in an outwardly widening shape in a cross-sectional view so that the front-rear width WL11 and the vertical width WL21 of the portion on the outer side of 58 are large.
　これにより、左のサイドパネル９６の開口部９６ｄの外側の縁部９６ｅの細長い六角形状が、左のサイドパネル９６の開口部９６ｄの内側の縁部９６ｆの細長い六角形状よりも大きなものとなっている。 This causes the elongated hexagonal shape of the outer edge 96e of the left side panel 96 opening 96d to be larger than the elongated hexagonal shape of the inner edge 96f of the left side panel 96 opening 96d. there is
　これにより、左のサイドパネル９６の開口部９６ｄにおいて、左のサイドパネル９６の開口部９６ｄにおけるボンネット５８の内部側の部分の空気の通過断面積と、左のサイドパネル９６の開口部９６ｄにおけるボンネット５８の外部側の部分の空気の通過断面積とが、異なるものに設定されている。 As a result, in the opening 96d of the left side panel 96, the air passing cross-sectional area of the portion inside the bonnet 58 in the opening 96d of the left side panel 96 and the bonnet in the opening 96d of the left side panel 96 The air passage cross-sectional area of the portion on the outside of 58 is set to be different.
　図２５及び図２６に示すように、右及び左のサイドパネル９５，９６の開口部９５ｄ，９６ｄにおいて、右のサイドパネル９５の縁部９５ｅ，９５ｆの前後幅ＷＲ１と、左のサイドパネル９６の外側の縁部９６ｅの前後幅ＷＬ１１とが同じものとなっている。右のサイドパネル９５の縁部９５ｅ，９５ｆの上下幅ＷＲ２と、左のサイドパネル９６の外側の縁部９６ｅの上下幅ＷＬ２１とが同じものとなっている。 As shown in FIGS. 25 and 26, in the openings 95d and 96d of the right and left side panels 95 and 96, the front-rear width WR1 of the edges 95e and 95f of the right side panel 95 and the width of the left side panel 96 The front-to-rear width WL11 of the outer edge portion 96e is the same. The vertical width WR2 of the edges 95e and 95f of the right side panel 95 and the vertical width WL21 of the outer edge 96e of the left side panel 96 are the same.
　右のサイドパネル９５の縁部９５ｅ，９５ｆの前後幅ＷＲ１が、左のサイドパネル９６の内側の縁部９６ｆの前後幅ＷＬ１２よりも大きなものとなっている。右のサイドパネル９５の縁部９５ｅ，９５ｆの上下幅ＷＲ２が、左のサイドパネル９６の内側の縁部９６ｆの上下幅ＷＬ２２よりも大きなものとなる。 The front-to-rear width WR1 of the edges 95e and 95f of the right side panel 95 is larger than the front-to-rear width WL12 of the inner edge 96f of the left side panel 96. The vertical width WR2 of the edges 95e and 95f of the right side panel 95 is larger than the vertical width WL22 of the inner edge 96f of the left side panel 96. As shown in FIG.
　右のサイドパネル９５の縁部９５ｅ，９５ｆの細長い六角形状の面積（右のサイドパネル９５の開口部９５ｄの空気の通過断面積）と、左のサイドパネル９６の外側の縁部９６ｅの細長い六角形状の面積（左のサイドパネル９６の開口部９６ｄにおけるボンネット５８の外部側の部分の空気の通過断面積）とが同じものとなる。 The elongated hexagonal area of the edges 95e and 95f of the right side panel 95 (air passage cross-sectional area of the opening 95d of the right side panel 95) and the elongated hexagon of the outer edge 96e of the left side panel 96 The area of the shape (cross-sectional area of air passage of the portion of the opening 96d of the left side panel 96 on the outside of the bonnet 58) is the same.
　右のサイドパネル９５の縁部９５ｅ，９５ｆの細長い六角形状の面積（右のサイドパネル９５の開口部９５ｄの空気の通過断面積）が、左のサイドパネル９６の内側の縁部９６ｆの細長い六角形状の面積（左のサイドパネル９６の開口部９６ｄにおけるボンネット５８の内部側の部分の空気の通過断面積）よりも大きなものとなっている。
　これにより、右のサイドパネル９５の開口部９５ｄにおける空気の通過断面積が、左のサイドパネル９６の開口部９６ｄにおける小さい方の空気の通過断面積よりも大きなものに設定されている。 The elongated hexagonal area of the edges 95e and 95f of the right side panel 95 (air passage cross-sectional area of the opening 95d of the right side panel 95) corresponds to the elongated hexagonal area of the inner edge 96f of the left side panel 96. It is larger than the area of the shape (cross-sectional area of passage of air in the portion on the inside of the bonnet 58 in the opening 96d of the left side panel 96).
As a result, the air passage cross-sectional area of the opening 95d of the right side panel 95 is set to be larger than the air passage cross-sectional area of the opening 96d of the left side panel 96, which is smaller.
　この場合、左のサイドパネル９６の開口部９６ｄが、右の開口部９５ｄ及び左の開口部９６ｄのうちの一方の開口部９６ｄとなり、右のサイドパネル９５の開口部９５ｄが、右の開口部９５ｄ及び左の開口部９６ｄのうちの他方の開口部９５ｄとなる。 In this case, the opening 96d of the left side panel 96 becomes one of the right opening 95d and the left opening 96d, and the opening 95d of the right side panel 95 becomes the right opening. It becomes the other opening 95d of 95d and the left opening 96d.
（エンジンの左部の付近の構成）
　図２７及び図２８に示すように、ボンネット５８の内部において、エンジン４９が支持フレーム４２（前述の（乗用型田植機の全体構成）及び図５を参照）に、横向きに支持されている。エンジン４９の出力軸４９ａがエンジン４９の左部から左方に向けて突出しており、出力プーリー７８及びフライホイール９７が、エンジン４９の出力軸４９ａに取り付けられている。 (Construction near the left part of the engine)
As shown in FIGS. 27 and 28, inside the bonnet 58, the engine 49 is laterally supported by the support frame 42 (see the above-mentioned (overall configuration of riding-type rice transplanter) and FIG. 5). An output shaft 49 a of the engine 49 protrudes leftward from a left portion of the engine 49 , and an output pulley 78 and a flywheel 97 are attached to the output shaft 49 a of the engine 49 .
　これにより、平面視で、エンジン４９の出力軸４９ａ、出力プーリー７８及びフライホイール９７が、ボンネット５８の左のサイドパネル９６に向いており、エンジン４９における一方の開口部９６ｄに向く部分に設けられている。 As a result, in plan view, the output shaft 49a of the engine 49, the output pulley 78, and the flywheel 97 face the left side panel 96 of the bonnet 58, and are provided in a portion of the engine 49 facing one opening 96d. ing.
　静油圧式の無段変速装置９８が、ミッションケース２５の左側面部に連結されており、出力プーリー７８と無段変速装置９８の入力プーリー９８ａとに亘って、伝動ベルト９９が取り付けられている。 A hydrostatic continuously variable transmission 98 is connected to the left side surface of the mission case 25 , and a transmission belt 99 is attached across the output pulley 78 and the input pulley 98 a of the continuously variable transmission 98 .
　エンジン４９の左前部に連結された支持ステー１０３が、左方に向けて延出され、右のフロアフレーム５０（前述の（フロアを支持するフロアフレームの構成）及び図５を参照）の下方に入り込んでいる。エンジン４９の左後部に連結された支持ステー１０４が、左方に向けて延出され、伝動ベルト９９の上方を跨ぐようにして通りながら、右のフロアフレーム５０の下方に入り込んでいる。 A support stay 103 connected to the left front portion of the engine 49 extends leftward and below the right floor frame 50 (see the above-mentioned (floor frame structure for supporting the floor) and FIG. 5). I'm in. A support stay 104 connected to the left rear portion of the engine 49 extends leftward and passes under the right floor frame 50 while straddling over the transmission belt 99 .
　右のフロアフレーム５０の下方において、マフラー１０５が前後方向に沿って配置されて、マフラー１０５の前部が支持ステー１０３に支持され、マフラー１０５の後部が支持ステー１０４に支持されている。エンジン４９の前部から延出された排気管１０６が、マフラー１０５の前部に接続されている。 A muffler 105 is arranged in the longitudinal direction below the right floor frame 50 , the front part of the muffler 105 is supported by the support stay 103 , and the rear part of the muffler 105 is supported by the support stay 104 . An exhaust pipe 106 extending from the front of the engine 49 is connected to the front of the muffler 105 .
　エンジン４９の動力が、エンジン４９の出力軸４９ａ、出力プーリー７８及び伝動ベルト９９を介して無段変速装置９８に伝達され、無段変速装置９８の動力が、ミッションケース２５の内部の副変速装置（図示せず）に伝達される。 The power of the engine 49 is transmitted to the continuously variable transmission 98 via the output shaft 49a of the engine 49, the output pulley 78, and the transmission belt 99, and the power of the continuously variable transmission 98 is transferred to the auxiliary transmission inside the transmission case 25. (not shown).
　副変速装置の動力が、前車軸ケース２６（前述の（前輪及び後輪の支持の構成）及び図５を参照）の内部の伝動系（図示せず）を介して、前輪１に伝達され、ミッションケース２５から後車軸ケース２７（前述の（前輪及び後輪の支持の構成）及び図７を参照）への伝動軸（図示せず）、及び後車軸ケース２７の内部の伝動系（図示せず）を介して、後輪２に伝達される。
　無段変速装置９８と副変速装置との間から分岐した動力が、ミッションケース２５から苗植付装置５（前述の（苗植付装置及び予備苗のせ台の構成）及び図１，２を参照）への伝動軸（図示せず）を介して、苗植付装置５に伝達される。 The power of the auxiliary transmission is transmitted to the front wheels 1 via a transmission system (not shown) inside the front axle case 26 (see the above-mentioned (front and rear wheel support structure) and FIG. 5), A transmission shaft (not shown) from the transmission case 25 to the rear axle case 27 (see the above-mentioned (front and rear wheel support structure) and FIG. 7), and a transmission system inside the rear axle case 27 (not shown). ) to the rear wheels 2.
The power branched from between the continuously variable transmission 98 and the sub-transmission is transmitted from the transmission case 25 to the seedling planting device 5 (see the above-mentioned (configuration of seedling planting device and spare seedling rest) and FIGS. 1 and 2). ) to the seedling planting device 5 via a transmission shaft (not shown).
（エンジンの右部の付近の構成）
　図２８に示すように、ボンネット５８の内部において、エンジン４９の動力により回転駆動されるファン１００が、エンジン４９の右部に設けられている。ラジエータ１０１が前後方向に沿って配置されて、支持フレーム４２（前述の（乗用型田植機の全体構成）及び図５を参照）の右部に支持されており、防塵部材である網部材１０２が、ラジエータ１０１の右側面部に取り付けられている。 (Construction near the right side of the engine)
As shown in FIG. 28 , inside the bonnet 58 , a fan 100 that is rotationally driven by the power of the engine 49 is provided on the right side of the engine 49 . A radiator 101 is arranged along the front-rear direction and is supported on the right side of a support frame 42 (see the above-mentioned (overall configuration of riding-type rice transplanter) and FIG. 5). , is attached to the right side of the radiator 101 .
　これにより、平面視で、ボンネット５８の内部において、ファン１００及びラジエータ１０１が、ボンネット５８の右のサイドパネル９５（ボンネット５８の他方の開口部９５ｄ）とエンジン４９との間に設けられている。
　平面視で、ファン１００が、ラジエータ１０１とエンジン４９との間に設けられ、網部材１０２が、ラジエータ１０１におけるボンネット５８の他方の開口部９５ｄに向く部分に設けられている。 Thus, in plan view, the fan 100 and the radiator 101 are provided between the engine 49 and the right side panel 95 (the other opening 95 d of the hood 58 ) of the hood 58 inside the hood 58 .
In plan view, the fan 100 is provided between the radiator 101 and the engine 49, and the net member 102 is provided in a portion of the radiator 101 facing the other opening 95d of the bonnet 58. As shown in FIG.
　ファン１００が回転駆動されることにより、ボンネット５８の内部に右から左への左右方向に沿った空気の流れが発生し、ボンネット５８の外部の空気が、エンジン４９を冷却する為の空気として、ボンネット５８の右のサイドパネル９５の開口部９５ｄ（前述の（右及び左のサイドパネルの開口部の構成）及び図２３，２５を参照）を通して、ボンネット５８の内部に導入される。
　この場合、右のサイドパネル９５の開口部９５ｄが、右の開口部９５ｄ及び左の開口部９６ｄのうちの一方の開口部９５ｄとなり、左のサイドパネル９６の開口部９６ｄが、右の開口部９５ｄ及び左の開口部９６ｄのうちの他方の開口部９６ｄとなる。 When the fan 100 is rotationally driven, an air flow is generated in the bonnet 58 along the horizontal direction from right to left. It is introduced into the interior of the bonnet 58 through an opening 95d in the right side panel 95 of the bonnet 58 (see above (Right and Left Side Panel Opening Configurations) and FIGS. 23 and 25).
In this case, the opening 95d of the right side panel 95 becomes one of the right opening 95d and the left opening 96d, and the opening 96d of the left side panel 96 becomes the right opening. It becomes the other opening 96d of the opening 95d and the left opening 96d.
　ボンネット５８の右のサイドパネル９５の開口部９５ｄからボンネット５８の内部に導入された空気は、網部材１０２及びラジエータ１０１、ファン１００を通り、エンジン４９の周囲を流れて、ボンネット５８の左のサイドパネル９６の開口部９６ｄ（前述の（右及び左のサイドパネルの開口部の構成）及び図２４，２５を参照）を通して、ボンネット５８の外部に出る。 The air introduced into the hood 58 from the opening 95d of the right side panel 95 of the hood 58 passes through the net member 102, the radiator 101, and the fan 100, flows around the engine 49, and flows to the left side of the hood 58. The exterior of the bonnet 58 is exited through an opening 96d in the panel 96 (see above (Right and Left Side Panel Opening Configurations) and FIGS. 24 and 25).
（発明の実施の第１別形態）
　図１～図２８では、施肥装置１０７が装備されていない仕様の乗用型田植機が示されている。図１～図２８に示す乗用型田植機において、農用資材供給装置である施肥装置１０７が装備された仕様の乗用型田植機を得る場合について、以下に説明する。 (First alternative embodiment of the invention)
1 to 28 show a ride-on type rice transplanter that is not equipped with a fertilizing device 107. FIG. In the riding-type rice transplanter shown in FIGS. 1 to 28, a case of obtaining a riding-type rice transplanter equipped with a fertilizing device 107, which is an agricultural material supply device, will be described below.
（発明の実施の第１別形態における施肥装置を設ける為の設置領域）
　図３，４，６において、腰掛け部８７、後ステップ４６，４７及び後ステップフレーム６８が撤去される。図１１及び図１２に示す右ステップ４４及び左ステップ４５の壁部４４ｉ，４５ｉが切除されて、右ステップ４４及び左ステップ４５が使用される。 (Installation area for installing a fertilizing device in the first alternative embodiment of the invention)
3, 4 and 6, the seat portion 87, rear steps 46, 47 and rear step frame 68 are removed. The walls 44i, 45i of the right step 44 and left step 45 shown in FIGS. 11 and 12 are cut away and the right step 44 and left step 45 are used.
　図３及び図６において、後ステップ４６，４７及び後ステップフレーム６８が設けられないことにより、後ステップ４６，４７及び後ステップフレーム６８が設けられていた領域が、施肥装置１０７を設ける為の設置領域となるのであり、施肥装置１０７を設ける為の設置領域が、右ステップ４４及び左ステップ４５、前ステップフレーム６７に対して後側に形成され、右及び左の横ステップ４８の後部の間に形成される。 In FIGS. 3 and 6, since the rear steps 46, 47 and the rear step frame 68 are not provided, the area where the rear steps 46, 47 and the rear step frame 68 were provided becomes an installation area for providing the fertilizing device 107. An installation area for installing the fertilizing device 107 is formed on the rear side of the right step 44 and left step 45 and the front step frame 67 and between the rears of the right and left lateral steps 48. It is formed.
（発明の実施の第１別形態における施肥装置の構成）
　図２９～図３２に示すように、施肥装置１０７は、ホッパー１０８、複数の繰り出し部１０９、送風部１１０、搬送風ダクト１１１、排出ダクト１１２等を有している。 (Structure of fertilizing device in the first alternative embodiment of the invention)
As shown in FIGS. 29 to 32, the fertilizing device 107 has a hopper 108, a plurality of feeding units 109, an air blowing unit 110, a conveying air duct 111, a discharge duct 112, and the like.
　図３０に示すように、左右方向に沿った支持フレーム１１４が設けられ、右及び左の支持フレーム１１３が、支持フレーム１１４に連結されて下方に向けて延出されている。支持フレーム１１３の下部が、横フレーム１８（前述の（機体フレームの構成）及び図６を参照）の後部にボルト連結される。 As shown in FIG. 30, a support frame 114 is provided along the left-right direction, and right and left support frames 113 are connected to the support frame 114 and extend downward. The lower portion of the support frame 113 is bolted to the rear portion of the lateral frame 18 (see (construction of the body frame) described above and FIG. 6).
　図２９，３０，３１に示すように、右及び左の支持フレーム１１５が、手摺りフレーム８６の後部の下部に連結されており、左右方向に沿った支持フレーム１１６が、右及び左の支持フレーム１１５に亘って連結されている。繰り出し部１０９が、支持フレーム１１４，１１６により前後から挟まれるようにして、支持フレーム１１４，１１６に連結される。 As shown in FIGS. 29, 30, and 31, right and left support frames 115 are connected to the lower rear portion of the handrail frame 86, and lateral support frames 116 are connected to the right and left support frames. 115 are connected. The feeding portion 109 is connected to the support frames 114 and 116 so as to be sandwiched from the front and rear by the support frames 114 and 116 .
　農用資材である肥料を貯留するホッパー１０８が、複数の繰り出し部１０９の上部に亘って取り付けられており、繰り出し部１０９がホッパー１０８の下部に接続されている。
作溝器（図示せず）が、フロート９（前述の（苗植付装置及び予備苗のせ台の構成）及び図１，２を参照）に取り付けられており、繰り出し部１０９と作溝器とに亘ってホース（図示せず）が接続されている。 A hopper 108 for storing fertilizer, which is an agricultural material, is attached over the upper portions of the plurality of delivery portions 109 , and the delivery portions 109 are connected to the lower portions of the hoppers 108 .
A ditch making device (not shown) is attached to the float 9 (see the above-mentioned (structure of the seedling planting device and the preliminary seedling resting table) and FIGS. 1 and 2), and the delivery portion 109 and the ditch making device are attached. A hose (not shown) is connected across.
　送風部１１０が、支持フレーム１１４の左部に取り付けられている。送風部１１０は、
　支持フレーム１１４の左部に取り付けられた送風ケース１１０ａと、上下方向に沿った軸芯周りに回転可能に送風ケース１１０ａに収容された送風羽根（図示せず）と、送風羽根を回転駆動する電動モータ１１０ｂとを有している。 A blower 110 is attached to the left side of the support frame 114 . The blower unit 110 is
A blower case 110a attached to the left part of the support frame 114, a blower blade (not shown) housed in the blower case 110a so as to be rotatable around an axis extending in the vertical direction, and an electric motor for rotating the blower blade. and a motor 110b.
　図２９，３０，３２に示すように、円筒状の搬送風ダクト１１１が、左右方向に沿って配置され、複数の繰り出し部１０９の下部の前部に亘って左右方向に沿って接続されている。送風切換部１１９が搬送風ダクト１１１の左部に接続され、送風部１１０の送風ケース１１０ａが送風切換部１１９に接続されている。 As shown in FIGS. 29, 30, and 32, a cylindrical carrier air duct 111 is arranged along the left-right direction and is connected along the left-right direction across the lower front portions of the plurality of feeding portions 109. . A blower switching section 119 is connected to the left portion of the carrier air duct 111 , and a blower case 110 a of the blower section 110 is connected to the blower switching section 119 .
　円筒状の排出ダクト１１２が、搬送風ダクト１１１に対して前側で搬送風ダクト１１１と同じ高さの位置を左右方向に沿って配置され、複数の繰り出し部１０９の前部に亘って左右方向に沿って接続されており、排出ダクト１１２の左部が送風切換部１１９に接続されている。搬送風ダクト１１１及び排出ダクト１１２を保護するカバー１２０が、排出ダクト１１２の上方の位置を、左右方向に沿って排出ダクト１１２の略全長に亘って設けられている。 A cylindrical exhaust duct 112 is arranged in the left-right direction on the front side of the carrier-air duct 111 and at the same height as the carrier-air duct 111 , and extends in the left-right direction across the front portions of the plurality of feed-out portions 109 . The left part of the exhaust duct 112 is connected to the air switching part 119 . A cover 120 for protecting the conveying air duct 111 and the discharge duct 112 is provided above the discharge duct 112 over substantially the entire length of the discharge duct 112 along the left-right direction.
（発明の実施の第１別形態における吸入ダクトの構成）
　図２９，３９，３１に示すように、吸入ダクト１１７が、送風部１１０の送風ケース１１０ａの下部から、下方に向けて延出され、左ステップ４５の上面部４５ａに対して下側を、エンジン４９に向けて前方に延出されている。 (Structure of suction duct in first alternative embodiment of the invention)
As shown in FIGS. 29, 39, and 31, the intake duct 117 extends downward from the lower portion of the blower case 110a of the blower portion 110, and the lower side of the upper surface portion 45a of the left step 45 is connected to the engine. 49 and extends forward.
　前ステップフレーム６７のフレーム７３（前述の（右ステップ及び左ステップを支持する前ステップフレームの構成）及び図６を参照）に、支持ステー１１８が取り付けられている。吸入ダクト１１７が、支持ステー１１８に支持されており、左の手摺りフレーム８６の下部８６ｂに対して下側に配置されている。 A support stay 118 is attached to the frame 73 of the front step frame 67 (see the aforementioned (configuration of the front step frame supporting the right step and the left step) and FIG. 6). A suction duct 117 is supported by a support stay 118 and arranged below the lower portion 86 b of the left handrail frame 86 .
（発明の実施の第１別形態における施肥装置の作動状態）
　図２９～図３２に示すように、送風部１１０において電動モータ１１０ｂにより送風羽根が回転駆動されると、エンジン４９の付近の比較的高温の空気が、吸入ダクト１１７に吸入されて、吸入ダクト１１７を介して送風部１１０に案内される。 (Operation state of the fertilizing device in the first alternative embodiment of the invention)
As shown in FIGS. 29 to 32, when the electric motor 110b rotates the blower vane in the blower section 110, relatively high-temperature air near the engine 49 is sucked into the intake duct 117, and the intake duct 117 rotates. is guided to the blower unit 110 via the
　送風部１１０に案内された空気により、送風部１１０は、搬送風を発生させ、搬送風を送風切換部１１９から搬送風ダクト１１１に供給するのであり、搬送風が搬送風ダクト１１１から繰り出し部１０９に供給される。 The blower section 110 generates carrier air from the air guided by the air blower 110 , and supplies the carrier air from the air switching section 119 to the carrier air duct 111 . supplied to
　繰り出し部１０９から排出ダクト１１２への肥料の排出口（図示せず）を閉じ操作し、送風切換部１１９を、送風部１１０の搬送風が搬送風ダクト１１１に供給される状態に設定する。 The manure discharge port (not shown) from the feeding portion 109 to the discharge duct 112 is closed, and the air blow switching portion 119 is set to a state in which the air from the air blowing portion 110 is supplied to the air duct 111 .
　前述の状態において、繰り出し部１０９によりホッパー１０８の肥料が繰り出し部０９の内部に繰り出され、搬送風ダクト１１１から繰り出し部１０９に供給された搬送風により、繰り出し部０９の内部の肥料が、ホースを通って作溝器（前述の（発明の実施の第１別形態における施肥装置の構成）を参照）に供給される。乗用型田植機の進行に伴って、作溝器により田面に溝が形成されるのであり、作溝器に供給された肥料が田面の溝に供給される。 In the above-described state, the fertilizer in the hopper 108 is fed into the feeding portion 09 by the feeding portion 109, and the fertilizer inside the feeding portion 09 is pushed through the hose by the conveying air supplied from the conveying air duct 111 to the feeding portion 109. It is fed through to the grooving machine (see above (Construction of Fertilizer Applicator in First Alternative Embodiment of the Invention)). As the riding-type rice transplanter advances, grooves are formed in the paddy field by the grooving machine, and the fertilizer supplied to the grooving machine is supplied to the grooves in the paddy field.
　作業を終了してホッパー１０８に残る肥料を回収する場合、繰り出し部１０９から排出ダクト１１２への肥料の排出口（図示せず）を開き操作し、送風切換部１１９を、送風部１１０の搬送風が排出ダクト１１２に供給される状態に設定する。
　前述の状態において、ホッパー１０８に残る肥料が、排出ダクト１１２に供給され、排出ダクト１１２に供給される搬送風により、排出ダクト１１２の右部の出口に搬送されるのであり、排出ダクト１１２の出口から出る肥料を回収袋（図示せず）に回収する。 When the manure remaining in the hopper 108 is to be collected after the work is finished, the manure discharge port (not shown) from the feeding unit 109 to the discharge duct 112 is opened, and the air blow switching unit 119 is switched to the conveying air of the air blow unit 110. is supplied to the discharge duct 112 .
In the above-described state, the fertilizer remaining in the hopper 108 is supplied to the discharge duct 112, and is conveyed to the right outlet of the discharge duct 112 by the conveying wind supplied to the discharge duct 112. Collect the manure coming out of the container into a collection bag (not shown).
（発明の実施の第１別形態における施肥装置の配置状態）
　図２９～図３２に示すように、施肥装置１０７（ホッパー１０８、繰り出し部１０９、送風部１１０、搬送風ダクト１１１、排出ダクト１１２及び送風切換部１１９）は、施肥装置１０７を設ける為の設置領域（前述の（発明の実施の第１別形態における施肥装置を設ける為の設置領域）を参照）に配置されている。
　施肥装置１０７は、平面視及び側面視で、ステップ４３（右ステップ４４及び左ステップ４５）の後部に対して後側に左右方向に沿って配置されている。 (Arrangement state of the fertilizing device in the first alternative embodiment of the invention)
As shown in FIGS. 29 to 32, the fertilizing device 107 (hopper 108, feeding unit 109, air blowing unit 110, conveying air duct 111, discharge duct 112, and air switching unit 119) has an installation area for installing the fertilizing device 107. (Refer to the above-mentioned (installation area for providing the fertilizing device in the first alternative embodiment of the invention)).
The fertilizing device 107 is arranged along the horizontal direction on the rear side with respect to the rear portion of the step 43 (the right step 44 and the left step 45) in plan view and side view.
　施肥装置１０７は、平面視及び背面視で、右の横ステップ４８の後部と左の横ステップ４８の後部との間に配置されている。
　ステップ４３の右部分である右の横ステップ４８の後部が、施肥装置１０７の右部に対して横外側に位置するように、後方に向けて延出されている。
　ステップ４３の左部分である左の横ステップ４８の後部が、施肥装置１０７の左部に対して横外側に位置するように、後方に向けて延出されている。 The fertilizing device 107 is arranged between the rear portion of the right lateral step 48 and the rear portion of the left lateral step 48 in plan view and rear view.
The rear portion of the right lateral step 48, which is the right portion of the step 43, extends rearward so as to be positioned laterally outward with respect to the right portion of the fertilizing device 107. As shown in FIG.
The rear portion of the left lateral step 48, which is the left portion of the step 43, extends rearward so as to be positioned laterally outward with respect to the left portion of the fertilizing device 107. As shown in FIG.
　右ステップ４４及び左ステップ４５の上面部４４ａ，４５ａと、排出ダクト１１２と、搬送風ダクト１１１と、送風部１１０の送風ケース１１０ａと、送風切換部１１９とが同じ高さに配置されている。 The upper surfaces 44a and 45a of the right step 44 and left step 45, the discharge duct 112, the conveying air duct 111, the blower case 110a of the blower section 110, and the blower switching section 119 are arranged at the same height.
　正面視で、右ステップ４４及び左ステップ４５の上面部４４ａ，４５ａと、排出ダクト１１２と、搬送風ダクト１１１とが、搬送風ダクト１１１の全長及び排出ダクト１１２の全長に亘って重複している。正面視で、左ステップ４５の上面部４５ａと、送風部１１０の送風ケース１１０ａと、送風切換部１１９とが、重複している。 As viewed from the front, the upper surface portions 44a and 45a of the right step 44 and left step 45, the discharge duct 112, and the conveying air duct 111 overlap over the entire length of the conveying air duct 111 and the entire length of the discharge duct 112. . As viewed from the front, the upper surface portion 45a of the left step 45, the blower case 110a of the blower portion 110, and the blower switching portion 119 overlap.
　これにより、乗用型田植機において、施肥装置１０７が比較的低い位置に設けられる。
作業状態（前輪１及び後輪２が耕盤に接地し、苗植付装置５のフロート９が田面に接地した状態）において、側面視で苗のせ台１０に沿って苗のせ台１０から斜め上方前方に延出した仮想線（図示せず）を想定した場合、施肥装置１０７（ホッパー１０８）の上端部は仮想線よりも下側に位置している。 As a result, the fertilizing device 107 is provided at a relatively low position in the riding-type rice transplanter.
In a working state (a state in which the front wheels 1 and the rear wheels 2 are in contact with the plowing board and the float 9 of the seedling planting device 5 is in contact with the paddy field), it is obliquely upward from the seedling placement table 10 along the seedling placement table 10 in a side view. Assuming an imaginary line (not shown) extending forward, the upper end of the fertilizing device 107 (hopper 108) is located below the imaginary line.
　施肥装置１０７に代えて、農用資材である薬剤を貯留するホッパー（図示せず）、複数の繰り出し部（図示せず）、送風部（図示せず）、搬送風ダクト（図示せず）、排出ダクト（図示せず）等を有して、田面に薬剤を供給するように構成された薬剤供給装置を、農用資材供給装置として装備してもよい。 Instead of the fertilizing device 107, a hopper (not shown) for storing chemicals, which are agricultural materials, a plurality of delivery units (not shown), an air blower (not shown), a conveying air duct (not shown), and a discharge A chemical supply device having a duct (not shown) or the like and configured to supply a chemical to the paddy field may be installed as the agricultural material supply device.
（発明の実施の第２別形態）
　施肥装置１０７において、送風部１１０及び送風切換部１１９が、搬送風ダクト１１１及び排出ダクト１１２の右部に接続されるように構成し、吸入ダクト１１７が、送風部１１０の送風ケース１１０ａの下部から、下方に向けて延出されて、右ステップ４４の上面部４４ａに対して下側を、エンジン４９に向けて前方に延出されるように構成してもよい。
　吸入ダクト１１７が、右（左）の手摺りフレーム８６の下部８６ｂに対して上側に配置されるように構成してもよい。 (Second alternative embodiment of the invention)
In the fertilizing device 107, the blower unit 110 and the blower switching unit 119 are configured to be connected to the right portions of the conveying wind duct 111 and the discharge duct 112, and the intake duct 117 is connected to the lower part of the blower case 110a of the blower unit 110. , may extend downward, and the lower side of the upper surface portion 44 a of the right step 44 may extend forward toward the engine 49 .
The intake duct 117 may be arranged above the lower portion 86 b of the right (left) handrail frame 86 .
（発明の実施の第３別形態）
　５リンク型式のサスペンション機構に代えて、右及び左のリンクとラテラルロッドとを備えた３リンク型式のサスペンション機構を採用してもよい。 (Third alternative embodiment of the invention)
Instead of the five-link suspension mechanism, a three-link suspension mechanism having right and left links and lateral rods may be employed.
（発明の実施の第４別形態）
　燃料タンク８０において、燃料タンク８０の前下部が、左のフロアフレーム５０の横フレーム５１に取り付けられ、燃料タンク８０の後上部が、前ステップフレーム６７の横フレーム７２の左部に取り付けられるように構成して、燃料タンク８０が、ステップフレーム６６（前ステップフレーム６７）の左前部の下方に設けられるように構成してもよい。
　この構成において、左の最外側の連結フレーム７９が、燃料タンク８０に対して左の横外側の位置を上下方向に沿って配置されるように構成すればよい。 (Fourth alternative embodiment of the invention)
In the fuel tank 80, the front lower portion of the fuel tank 80 is attached to the lateral frame 51 of the left floor frame 50, and the rear upper portion of the fuel tank 80 is attached to the left portion of the lateral frame 72 of the front step frame 67. Alternatively, the fuel tank 80 may be provided below the left front portion of the step frame 66 (the front step frame 67).
In this configuration, the left outermost connecting frame 79 may be arranged along the vertical direction at the left laterally outer position with respect to the fuel tank 80 .
（発明の実施の第５別形態）
　右ステップ４４及び左ステップ４５を分離して構成するのではなく、右ステップ４４及び左ステップ４５を一体的に構成して、一つの前ステップとしてもよい。
　右及び左のフロアフレーム５０を分離して構成するのではなく、右及び左のフロアフレーム５０を互いに連結して、一つのフロアフレーム５０としてもよい。 (Fifth alternative embodiment of the invention)
Instead of configuring the right step 44 and the left step 45 separately, the right step 44 and the left step 45 may be configured integrally as one front step.
Instead of configuring the right and left floor frames 50 separately, the right and left floor frames 50 may be connected to form one floor frame 50 .
（発明の実施の第６別形態）
　右ステップ４４及び左ステップ４５の開口部４４ｅ，４５ｅとは別に、腰掛け部８７を取り付ける為の専用の開口部を、右ステップ４４及び左ステップ４５に設けてもよい。
　この構成によると、腰掛け部８７のボス部８７ｅが不要になるので、腰掛け部８７の取付ブラケット８７ｄと横フレーム７１の取付ブラケット７１ｂとの間に、右ステップ４４及び左ステップ４５が挟まれるように、ボルト８８を、腰掛け部８７の取付ブラケット８７ｄと横フレーム７１の取付ブラケット７１ｂとに亘って、右ステップ４４及び左ステップ４５の開口部を通して締め付ければよい。 (Sixth alternative embodiment of the invention)
Separately from the openings 44e and 45e of the right step 44 and the left step 45, the right step 44 and the left step 45 may be provided with dedicated openings for mounting the seat portion 87 thereon.
According to this configuration, the boss portion 87e of the seat portion 87 becomes unnecessary, so that the right step 44 and the left step 45 are sandwiched between the mounting bracket 87d of the seat portion 87 and the mounting bracket 71b of the lateral frame 71. , the bolt 88 can be tightened through the openings of the right step 44 and the left step 45 across the mounting bracket 87 d of the seat portion 87 and the mounting bracket 71 b of the horizontal frame 71 .
（発明の実施の第７別形態）
　左のサイドパネル９６において、左のサイドパネル９６の開口部９６ｄの内側の縁部９６ｆの細長い六角形状が、左のサイドパネル９６の開口部９６ｄの外側の縁部９６ｅの細長い六角形状よりも大きなものとなるように構成してもよい。 (Seventh alternative embodiment of the invention)
In the left side panel 96, the elongated hexagonal shape of the inner edge 96f of the left side panel 96 opening 96d is greater than the elongated hexagonal shape of the outer edge 96e of the left side panel 96 opening 96d. It may be configured to be a thing.
　これにより、左のサイドパネル９６の開口部９６ｄにおいて、左のサイドパネル９６の開口部９６ｄにおけるボンネット５８の内部側の部分の空気の通過断面積と、左のサイドパネル９６の開口部９６ｄにおけるボンネット５８の外部側の部分の空気の通過断面積とが、異なるものに設定される。 As a result, in the opening 96d of the left side panel 96, the air passing cross-sectional area of the portion inside the bonnet 58 in the opening 96d of the left side panel 96 and the bonnet in the opening 96d of the left side panel 96 The air passage cross-sectional area of the portion on the outside of 58 is set to be different.
（発明の実施の第８別形態）
　エンジン４９を左右逆に配置して、エンジン４９の右部にエンジン４９の出力軸４９ａが設けられ、エンジン４９に対して左側にファン１００、ラジエータ１０１及び網部材１０２が配置されるように構成してもよい。
　この構成によると、ボンネット５８において、右のサイドパネル９５の開口部９５ｄを図５の右部及び図６の下部に示すように構成してもよく、前述の（発明の実施の第７別形態）に記載のように構成してもよい。左のサイドパネル９６の開口部９６ｄを図５の左部及び図６の上部に示すように構成すればよい。 (Eighth alternative embodiment of the invention)
The engine 49 is arranged with the left and right reversed, the output shaft 49a of the engine 49 is provided on the right side of the engine 49, and the fan 100, the radiator 101 and the net member 102 are arranged on the left side of the engine 49. may
According to this configuration, in the bonnet 58, the opening 95d of the right side panel 95 may be configured as shown in the right part of FIG. 5 and the lower part of FIG. ) may be configured as described in The opening 96d of the left side panel 96 may be constructed as shown in the left part of FIG. 5 and the upper part of FIG.
（発明の実施の第９別形態）
　エンジン４９を、空冷式に構成してもよい。この構成によると、エンジン４９の空冷用のファン１００が設けられ、ラジエータ１０１が廃止される。
　右及び左のサイドパネル９５，９６の開口部９５ｄ，８６ｄは、細長い六角形状ばかりではなく、円形状や四角形状、細長い楕円形状や平行四辺形状等に形成されてもよい。 (Ninth alternative embodiment of the invention)
The engine 49 may be configured to be air-cooled. According to this configuration, a fan 100 for air cooling of the engine 49 is provided, and the radiator 101 is eliminated.
The openings 95d, 86d of the right and left side panels 95, 96 may be formed not only in an elongated hexagonal shape, but also in a circular shape, a rectangular shape, an elongated elliptical shape, a parallelogram shape, or the like.
（発明の実施の第１０別形態）
　施肥装置１０７が装備された仕様の乗用型田植機において、腰掛け部８７を施肥装置１０７のガード部材として設けてもよく、右及び左の横ステップ４８を廃止してもよく、上フレーム９０及び下フレーム８９を廃止してもよい。 (Tenth alternative embodiment of the invention)
In a riding-type rice transplanter equipped with a fertilizing device 107, the seat portion 87 may be provided as a guard member for the fertilizing device 107, the right and left side steps 48 may be eliminated, and the upper frame 90 and the lower frame 90 may be omitted. Frame 89 may be eliminated.
（発明の実施の第１１別形態）
　電動式のウインチ（図示せず）を、以下の説明のように設けてもよい。
　ウインチフレーム（図示せず）を、支持フレーム４２（前述の（乗用型田植機の全体構成）及び図５を参照）の前部に取り付けて、フロア３８の前方の位置を上方に向けて延出し、ウインチを、フロア３８よりも高い位置に配置されるようにウインチフレームの上部に取り付ける。 (Eleventh alternative embodiment of the invention)
A motorized winch (not shown) may be provided as described below.
A winch frame (not shown) is attached to the front part of the support frame 42 (see the above-mentioned (overall configuration of the riding-type rice transplanter) and FIG. 5), and the front position of the floor 38 extends upward. , the winch is mounted on the top of the winch frame so that it is positioned higher than the floor 38.
　深い水田において乗用型田植機が走行不能に陥った場合、ウインチから延出されたワイヤ（図示せず）を畦の樹木等に取り付け、ウインチによりワイヤを巻き取って、乗用型田植機を脱出させる。ウインチがフロア３８よりも高い位置に配置されているので、ウインチが水没するようなことはない。 When the ride-on rice transplanter becomes unable to run in a deep paddy field, a wire (not shown) extended from the winch is attached to a tree or the like on a ridge, and the wire is wound by the winch to escape the ride-on rice transplanter. . Since the winch is arranged at a position higher than the floor 38, the winch will not be submerged.
　ウインチフレームを支持フレーム４２に取り付ける複数の取付部材のうち、一つの取付部材を、他の取付部材よりも少し脆弱に構成してもよい。　
　ウインチを使用する際に大きな負荷がウインチに掛かった場合、脆弱な取付部材を破損させて、ウインチフレームを支持フレーム４２から脱落させることができるのであり、大きな負荷が支持フレーム４２に掛かる状態を避けることができる。 Of the plurality of mounting members that mount the winch frame to the support frame 42, one mounting member may be configured to be slightly weaker than the other mounting members.
When a large load is applied to the winch when using the winch, the fragile mounting member can be damaged and the winch frame can be dropped from the support frame 42, avoiding a state in which a large load is applied to the support frame 42. be able to.
　本発明は、乗用型田植機ばかりではなく、田面に種子を播く播種装置を作業装置として装備した乗用型直播機にも適用できる。 The present invention can be applied not only to riding-type rice transplanters, but also to riding-type direct seeders equipped with a seeding device for sowing seeds on the surface of a field as a working device.
　３　　　機体フレーム
　３ａ　　下面部
　３ｂ　　横面部
　３ｃ　　横面部
　３ｄ　　上面部
　４　　　リンク機構
　５　　　苗植付装置（作業装置）
　１５　　縦フレーム
　２７　　後車軸ケース
　３３　　バネ受け部材
　３３ａ　本体部
　３３ｂ　取付部
　３３ｃ　取付部
　３４　　サスペンションバネ
　３８　　フロア
　４３　　ステップ
　４４　　右ステップ（前ステップ）
　４４ｊ　突出部
　４４ｋ　突出部
　４５　　左ステップ（前ステップ）
　４５ｊ　突出部
　４５ｋ　突出部
　４６　　後ステップ
　４６ｄ　突出部
　４６ｅ　突出部
　４７　　後ステップ
　４７ｄ　突出部
　５０　　フロアフレーム
　６６　　ステップフレーム
　６７　　前ステップフレーム
　６８　　後ステップフレーム
　７９　　連結フレーム
　８０　　燃料タンク
　８１　　ボルト
　１０７　施肥装置（農用資材供給装置）
  3 body frame 3a lower surface portion 3b horizontal surface portion 3c horizontal surface portion 3d upper surface portion 4 link mechanism 5 seedling planting device (working device)
15 Vertical Frame 27 Rear Axle Case 33 Spring Receiving Member 33a Body Part 33b Mounting Part 33c Mounting Part 34 Suspension Spring 38 Floor 43 Step 44 Right Step (Front Step)
44j Protruding portion 44k Protruding portion 45 Left step (front step)
45j projecting portion 45k projecting portion 46 rear step 46d projecting portion 46e projecting portion 47 rear step 47d projecting portion 50 floor frame 66 step frame 67 front step frame 68 rear step frame 79 connecting frame 80 fuel tank 81 bolt 107 fertilizer applicator (agricultural material supply Device)

Claims (9)

  1. 　前後方向に沿って配置された機体フレームと、
    　前記機体フレームの後部に取り付けられたバネ受け部材と、
    　走行用の後輪を支持する後車軸ケースと、
    　前記バネ受け部材と前記後車軸ケースとに亘って取り付けられたサスペンションバネと、
    　前記機体フレームの後部に設けられたステップと、
    　前記ステップを下側から支持するステップフレームと、
    　前記バネ受け部材に取り付けられ、前記バネ受け部材から上方に向けて延出された縦フレームとが備えられ、
    　前記ステップフレームが前記縦フレームの上部に取り付けられている水田作業機。     A body frame arranged along the longitudinal direction,
    a spring receiving member attached to the rear portion of the body frame;
    a rear axle case for supporting rear wheels for running;
    a suspension spring attached across the spring receiving member and the rear axle case;
    a step provided at the rear of the body frame;
    a step frame supporting the step from below;
    a vertical frame attached to the spring receiving member and extending upward from the spring receiving member;
    The paddy field working machine, wherein the step frame is attached to the upper part of the vertical frame.
  2. 　前記縦フレームの下部が、前記バネ受け部材と前記機体フレームとに亘って取り付けられている請求項１に記載の水田作業機。 The paddy field work machine according to claim 1, wherein the lower portion of the vertical frame is attached across the spring receiving member and the body frame.
  3. 　前記バネ受け部材は、
    　前記機体フレームの右の側部から右方に向けて延出され、且つ、前記機体フレームの左の側部から左方に向けて延出されるように、前記機体フレームの下部に取り付けられた本体部と、
    　前記本体部における前記機体フレームの右の側部から右方に向けて延出された部分と前記機体フレームの右の側部とに亘って取り付けられた右の取付部と、
    　前記本体部における前記機体フレームの左の側部から左方に向けて延出された部分と前記機体フレームの左の側部とに亘って取り付けられた左の取付部と、を有している請求項１又は２に記載の水田作業機。     The spring receiving member is
    A main body attached to the lower part of the fuselage frame so as to extend rightward from the right side of the fuselage frame and to extend leftward from the left side of the fuselage frame. Department and
    a right mounting portion mounted over a portion of the body portion extending rightward from the right side portion of the body frame and the right side portion of the body frame;
    The main body portion has a portion extending leftward from a left side portion of the body frame and a left mounting portion attached across the left side portion of the body frame. The paddy field working machine according to claim 1 or 2.
  4. 　前記縦フレームの下部が、前記機体フレームの上部と、前記機体フレームの側部と、前記本体部における前記機体フレームの側部から延出された部分とに亘って取り付けられることにより、前記バネ受け部材と前記機体フレームとに亘って取り付けられている請求項３に記載の水田作業機。 The lower part of the vertical frame is attached over the upper part of the body frame, the side part of the body frame, and the part of the body part that extends from the side part of the body frame, so that the spring bearing 4. The paddy field working machine according to claim 3, which is attached across the member and the body frame.
  5. 　フロアが、前記機体フレームに設けられ、
    　前記ステップが、前記フロアよりも高い位置に設けられ、
    　前記フロアを下側から支持するフロアフレームが、前記機体フレームに設けられており、
    　前記ステップフレームの右前部と前記フロアフレームの右後部とに亘って、上下方向に沿って取り付けられた右の連結フレームと、
    　前記ステップフレームの左前部と前記フロアフレームの左後部とに亘って、上下方向に沿って取り付けられた左の連結フレームとが備えられている請求項１～４のうちのいずれか一項に記載の水田作業機。     A floor is provided on the fuselage frame,
    The step is provided at a position higher than the floor,
    A floor frame that supports the floor from below is provided on the body frame,
    a right connecting frame mounted along the vertical direction across the right front portion of the step frame and the right rear portion of the floor frame;
    5. The system according to any one of claims 1 to 4, further comprising a left connecting frame attached along the vertical direction across the left front portion of the step frame and the left rear portion of the floor frame. paddy field machine.
  6. 　前記ステップフレームの右前部の下方又は左前部の下方に設けられた燃料タンクが備えられ、
    　前記右又は左の連結フレームが、前記燃料タンクに対して横外側の位置を上下方向に沿って配置されている請求項５に記載の水田作業機。     A fuel tank is provided below the right front portion or the left front portion of the step frame,
    6. The paddy field working machine according to claim 5, wherein said right or left connecting frame is arranged along the vertical direction at a laterally outer position with respect to said fuel tank.
  7. 　下方に向けて突出した複数の突出部が、前記ステップの下部に設けられ、
    　前記突出部が前記ステップフレームに載置されることにより、前記ステップが前記ステップフレームに支持されている請求項１～６のうちのいずれか一項に記載の水田作業機。     A plurality of protrusions protruding downward are provided at the bottom of the step,
    The paddy field working machine according to any one of claims 1 to 6, wherein the step is supported by the step frame by placing the projecting portion on the step frame.
  8. 　下方に向けて入り込む凹部が、前記突出部の上部に形成され、
    　ボルトが、前記凹部に入り込み、前記突出部と前記ステップフレームとに亘って取り付けられることにより、前記ステップが前記ステップフレームに連結されている請求項７に記載の水田作業機。     A recess extending downward is formed in the upper portion of the protrusion,
    8. The paddy field working machine according to claim 7, wherein the step is connected to the step frame by inserting a bolt into the recess and mounting across the protrusion and the step frame.
  9. 　前記ステップは、前ステップと、前記前ステップの後部に連なる後ステップとを有し、
    　前記ステップフレームは、前記前ステップを下側から支持する前ステップフレームと、前記後ステップを下側から支持する後ステップフレームとを有しており、
    　前記後ステップ及び前記後ステップフレームが設けられないことにより、田面に農用資材を供給可能な農用資材供給装置を設ける為の設置領域が、前記前ステップ及び前記前ステップフレームに対して後側に形成される請求項１～８のうちのいずれか一項に記載の水田作業機。
          The step has a front step and a rear step connected to the rear of the front step,
    The step frame has a front step frame that supports the front step from below and a rear step frame that supports the rear step from below,
    Since the rear step and the rear step frame are not provided, an installation area for providing an agricultural material supply device capable of supplying agricultural materials to the paddy field is formed behind the front step and the front step frame. The paddy field working machine according to any one of claims 1 to 8.
PCT/JP2022/044866 2021-12-21 2022-12-06 Paddy field work machine WO2023120154A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015223871A (en) * 2014-05-26 2015-12-14 株式会社クボタ Riding type paddy working machine
JP2020055429A (en) * 2018-10-02 2020-04-09 株式会社クボタ Work machine
JP2020124939A (en) * 2019-02-01 2020-08-20 株式会社クボタ Working machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015223871A (en) * 2014-05-26 2015-12-14 株式会社クボタ Riding type paddy working machine
JP2020055429A (en) * 2018-10-02 2020-04-09 株式会社クボタ Work machine
JP2020124939A (en) * 2019-02-01 2020-08-20 株式会社クボタ Working machine

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