JP2019110877A - Paddy field implement - Google Patents

Abstract

To provide a paddy field implement capable of viewing easily a direction or an existence position of a wheel from on a driving part step.SOLUTION: A driver's seat 15 is provided on a driving part step 3, and a perspective floor part 7 through which a vehicle body lower part can be viewed is provided on the driving part step 3. The perspective floor part 7 is constituted of a through-hole 70 group aligned radially along a radial direction starting from an existence position of the driver's seat 15 or a vicinity position of the driver's seat 15.SELECTED DRAWING: Figure 3

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a paddy field work machine provided with a fluoroscopic floor portion capable of visualizing the lower side of a vehicle body in an operation unit step.

As a paddy field work machine provided with the above-mentioned operation part steps, there is a thing constituted as follows.
In this paddy field work machine, the step floor is constituted of a main step floor having no space penetrating downward and a lattice-like sub step floor having a space portion penetrating downward (see Patent Document 1).

JP 2007-228975 A (see paragraphs [0019], [0020], and FIGS. 2 and 3)

According to the structure using a lattice-like substep floor having a space portion penetrating downward as in the structure described in Patent Document 1, the mud attached to the shoe can be dropped on the substep floor, so It is useful in that it can control the introduction of mud to the center of the airframe.
And since it is also possible to visually recognize the position of a wheel through a lattice-like substep floor, it is advantageous also in this respect. However, in this structure, the lattice-like sub-step floor is formed of the crosspieces along the longitudinal direction and the crosspieces along the lateral direction. Therefore, when the driver mounted on the driver's seat wants to confirm the direction of the front wheel through the sub-step floor, the crosspiece along the front and back direction considerably obstructs the driver's view to look diagonally forward Tend. For this reason, it is difficult to visually recognize the direction of the wheel easily, and there is a possibility that it is necessary to work in an inappropriate posture in which the body is largely inclined in the lateral direction from the driver's seat and looked into.

  The present invention is intended to provide a paddy field work machine which makes it easy to visually recognize the direction and the existing position of a wheel from above the driving unit step.

In order to achieve the above object, the paddy field work machine according to the present invention is
A driver's seat is provided on the driver's step, and the operator's step is provided with a fluoroscopic floor that allows the driver to see the lower side of the vehicle body, and the fluoroscopic floor is the position where the driver's seat exists or the position near the driver's seat It is characterized in that it is constituted by a group of through holes arranged radially along the radial direction starting from.

According to the present invention, since the through holes forming the fluoroscopic floor portion which can see the lower side of the vehicle body are radially provided starting from the position of the driver's seat or the position near the driver's seat, As compared with the case where the through holes are provided along the left-right direction, there is an advantage that visual visibility can be further enhanced.
That is, the arrangement direction of the through holes formed in the fluoroscopic floor on the driver step and the direction in which the driver is seated on the driver's seat for visual observation coincide with each other. For this reason, in the visual direction, the range in which the driver's line of sight is blocked becomes relatively small depending on the part other than the part where the through hole is present in the driving part step, and as a result, visual visibility is easily improved.

  In the above-mentioned configuration, it is preferable that the see-through floor portion is provided at a position laterally outward from the driver's seat in the left-right direction.

  According to the present invention, since the see-through floor portion is provided at a position closer to the lateral outer side than the driver's seat in the left-right direction, it is easy to visually observe a wheel or the like provided at the lateral outer side.

  In the above configuration, the fluoroscopic floor portion is constituted by a grid-like member by a combination of a radial direction crosspiece member along the arrangement direction of the through holes arranged in a radial direction and a cross direction crosspiece member intersecting the radial direction crosspiece member Is preferable.

According to this configuration, while adopting a grid-like member in which the width in the vertical thickness direction can be increased more easily than in the case of a simple plate-like body, one of the cross members constituting the grid is an array of through holes Since the radial crosspieces are in line with the direction, there is almost no possibility that the driver's line of sight is interrupted by at least the radial crosspieces. And since the cross direction cross member which crosses the radial direction cross member is provided in the direction which also crosses the line of sight of the driver, in the place where the cross direction cross member is present, the perspective floor from the driver side Although the see-through area through the part is narrowed, it is easier to ensure a better visibility than in the case where the see-through area is narrowed by both crosspieces.
And by using a grid-like member, it is easy to ensure the strength of the fluoroscopic floor.

  In the above-described configuration, the driving unit step includes a main step portion positioned at a central portion in the longitudinal direction of the vehicle on the front side of the driver seat, a rear step portion positioned on the rear side including the lateral side of the driver seat, And a front step located at a front end of the machine forward of the main step, and any one or more of the main step, the rear step, and the front step. Preferably, the fluoroscopic floor is provided in the unit.

  According to this configuration, by forming the fluoroscopic floor portion at a desired portion, the visibility in each of the optional step portions of the driving portion step can be improved.

  In the above-mentioned configuration, it is preferable that the first fluoroscopic floor portion provided in the main step portion be provided at a position where a driver mounted on the driver's seat can visually check the front wheel.

  According to this configuration, the driver who is mounted on the driver's seat can easily view the front wheel via the first fluoroscopic floor.

  In the above-mentioned configuration, it is preferable that the second fluoroscopic floor portion provided in the rear step portion be provided at a position where a driver mounted on the driver's seat can visually check a rear wheel.

  According to this configuration, the driver who is mounted on the driver's seat can easily view the rear wheel via the second fluoroscopic floor.

  In the above configuration, the third fluoroscopic floor provided in the front step may be provided at a position where a driver mounted on the driver's seat can view the front of the machine below the front step. It is suitable.

  According to this configuration, it is easy for the driver mounted on the driver's seat to visually check the front of the vehicle below the front step through the third fluoroscopic floor.

  In the above configuration, it is preferable that each through hole of the see-through floor portion is formed in an elongated hole shape in which the hole width in the radial direction is longer than the hole width in the direction intersecting the radial direction.

  According to this configuration, each through hole of the fluoroscopic floor portion is formed in a long hole shape having a long hole width in the radial direction along the direction of the line of sight, so there are few portions blocking the line of sight in the direction intersecting the radial direction. Can further improve the visibility.

It is a side view showing the whole of a riding type rice transplanter. It is a top view which shows the whole of a riding type rice transplanter. It is a top view which shows correlation with driving part step, a wheel, and other devices. It is a top view which shows the positional relationship of a blower and a guard member. It is a perspective view which shows the positional relationship of a blower and a guard member. It is a perspective view showing an operation part step. It is an exploded perspective view showing an operation part step. FIG. 8 is a cross-sectional view showing a cross section taken along line VIII-VIII in FIG. 3; It is a perspective view which shows the positional relationship of the blower and guard member in another embodiment. It is a top view which shows the driving part step in another embodiment. It is a top view which shows the perspective floor part in another embodiment. It is a perspective view showing the machine front end in another embodiment.

Hereinafter, an example of an embodiment of the present invention will be described based on the description of the drawings.
The front-rear direction and the left-right direction in the embodiment are described as follows unless otherwise specified. As shown in FIG. 1 and FIG. 2, the traveling direction on the forward side of the paddy field work machine during traveling is “forward dF”, and the traveling direction on the reverse side is “backward dB”. The direction corresponding to the right side with respect to the forward posture in the front-rear direction is "right side dR", and the direction corresponding to the left side is "left side dL".

[Overall configuration of paddy field work machine]
The side of the riding type rice transplanter which is an example of the paddy field work machine according to the present invention is shown in FIG. 1, and its plane is shown in FIG. The riding type rice planter is equipped with a seedling planting device 2 at the rear of the traveling machine body 1 to carry out a seedling planting operation.
The traveling vehicle body 1 includes a vehicle body frame 10 having a pair of left and right vehicle body front-to-back main frames 10A and 10A, and a pair of left and right front wheels 11F and 11F and a pair of left and right rear wheels 11R installed at the lower part of the vehicle body frame 10. , 11R are configured to be capable of self-running.

At the front of the traveling vehicle 1, there is provided a driving unit A equipped with an engine 12 and a transmission case 13 for outputting a driving force to the front wheel 11F and the rear wheel 11R. On the rear side of the traveling vehicle 1, a boarding type driving unit B having a driver seat 15 is provided.
In the driving unit B, a driving unit step 3 for boarding is provided on the upper side of the vehicle body frame 10. A driver's seat 15 is provided on the driver's step 3 and mounted on the driver's seat 15, the steering wheel 14 provided at the rear of the driving part A is operable.
At the front of the operation unit B, on the lateral side of the traveling machine body 1 corresponding to the left and right lateral outside of the driving unit A, a spare seedling stand for mounting spare seedlings with the front of the operation unit step 3 interposed. 16 are set up. On the rear side of the driver's seat 15 at the rear of the driving unit B, a fertilization device 4 for eight rows is provided, and a riding type rice transplanter is configured to a mid-mount fertilization specification.

[Seedling planting device]
The seedling planting device 2 is connected to the rear of the vehicle body frame 10 via a link mechanism 17 so as to be able to move up and down.
In this seedling planting device 2, a seedling stand 20 for eight row planting capable of carrying eight rows of mat-like seedlings, a feed case 21 to which a driving force from the engine 12 is input through the input shaft 2a, The four planting drive cases 22 are arranged at predetermined intervals in the lateral direction of the vehicle body. A seedling planting mechanism 23 is drivably provided on each of the four planting drive cases 22 on both lateral sides on the rear end side. At the lower part of a planting frame (not shown) connecting the planting drive cases 22, four leveling floats 24 are provided in line in the vehicle body lateral direction.

Each seedling planting mechanism 23 drives two planting claws 23a at a phase 180 degrees around the rotational axis in the left-right direction by the driving force transmitted from feed case 21 to planting drive case 22. It is of a well-known structure that has been constructed. Each planting claw 23a is driven so that the tip thereof draws a long rotational locus in the vertical direction, and the two planting claws 23a alternately take out planted seedlings from the lower end of the seedling platform 20, A planting exercise is conducted to plant on the mud layer on which the leveling by the float 24 is performed.
In this seedling planting device 2, the descent operation state in which the ground adjusting float 24 is brought into contact with the mud surface of the field by the link mechanism 17 being rocked vertically to the vehicle body frame 10 by the lifting cylinder 18; 24 is lifted and lowered to the raised non-working condition, which is high and away from the mud surface of the field.

Fertilizer
The fertilizing device 4 comprises a fertilization tank 40 for storing powdery granular fertilizer disposed on the back side of the driver's seat 15, a delivery portion 41 disposed on the lower side thereof, and the seedling planting device 2 And a fertilization hose 42 for conveying toward the grooving device 25 provided in the above. The fertilization hose 42 is made of a flexible tube made of soft resin or the like, and is configured to be elastically deformable in accordance with the raising and lowering operation of the seedling planting device 2.

The fertilization device 4 is connected and fixed to the vehicle body frame 10 via a fertilization support frame 43 (corresponding to a support member).
That is, on the side of the vehicle body frame 10, rear vertical frames 10B and 10B along the main frames 10A and 10A are erected on the upper surfaces of the rear portions of the main frames 10A and 10A along the left and right direction.
And a horizontal frame material is extendedly installed along the left-right direction in the upper part of the rear vertical frame 10B on either side, and the fertilization support frame 43 is comprised by this horizontal frame material.

[Blower]
A blower 5 for fertilization is provided at the left lateral side of the fertilizing device 4 as a means for supplying the transport wind for conveying the fertilizer fed from the feeding portion 41 of the fertilizing device 4 by the fertilization hose 42 as a wind force. .
The blower 5 is provided with a blower fan (not shown) that rotates around a rotation axis in the vertical direction in the blower case 50. The built-in blower fan is constituted by a turbo type or sirocco type centrifugal fan which sucks in external air from below along the rotation axis and discharges it tangentially. An electric motor 51 for rotationally driving the blower fan is provided on the upper surface side of the blower case 50 in a state of being located above the blower fan.
An intake pipe 52 is connected to the lower side of the blower case 50 at a position corresponding to the rotation center of the blower fan. At an outer peripheral portion of the blower case 50, an air supply duct 53 for supplying a carrier air toward the fertilizing device 4 is connected in a state of being in a tangential direction with respect to the rotation locus of the blower fan.

  Therefore, the gas taken in from the intake pipe 52 is exhausted in the tangential direction from the outer side of the circumferential direction of the blower case 50 and sent to the air supply duct 53 of the fertilizing device 4 as the carrier air. Fertilizer fed from the feeding unit 41 is mixed with the carrier air in the air supply duct 53, and is transported to the groover 25 of the target area for fertilization via the fertilizer hose 42.

As shown in FIGS. 1, 4 and 5, in the blower 5, the large diameter portion 50 a of the blower case 50, in which the blower fan is installed, is positioned above the upper surface of the rear end portion of the driving unit step 3. , And is disposed on the rear side of the driving unit step 3. And, the intake pipe 52 connected to the lower side of the blower case 50 is extended downward from the driving unit step 3. The piping 52 is extended so that the front end side reaches the vicinity of the driving unit A as shown in FIG. 3 and is provided so as to take in a high-temperature dried gas heated by the waste heat of the engine 12.
Further, as shown in FIG. 4, the intake pipe 52 is disposed on the inboard side in the left-right direction more than the outermost edge of the driving unit step 3 in the left-right direction.

The intake pipe 52 is formed in the shape of a round pipe having a circular cross section near the connection point to the blower case 50, but the whole is not necessarily formed in the same shape. That is, as shown in FIG. 9, the shape of the pipe 52 is longer than the diameter in the vertical direction at the location corresponding to the lower side of the driving unit step 3 at the extension location on the front side of the connection location to the blower case 50. It is formed in a cross-sectional oval shape so that it may become flat shape with a wide diameter in the left-right direction.
The reason for this is to maintain the vehicle height of the lower abdomen of the vehicle high while securing the cross-sectional area of the pipe 52 as the intake path at least a predetermined cross-sectional area. In fact, in consideration of passage resistance and the like, the cross-sectional area of the oval portion is set to be slightly larger than the cross-sectional area of the circular portion.

[Guard member]
As shown in FIGS. 3 to 5, a guard member 6 is provided on the front side of the blower 5.
The guard member 6 is made of a metal round pipe, and one end of the guard member 6 is bolted to a fertilization support frame 43 supporting the fertilization device 4. The other end of the vehicle body side is connected to a part of the vehicle body frame 10 present below the driver step 3 by passing outside the lateral outer edge of the driver step 3.

Of the guard member 6, the lateral flange portion 60 located in the frontward direction of the blower case 50 and extending in the left-right direction is slightly forward of the outer peripheral edge of the blower case 50, as shown in FIGS. It is located higher than the large diameter portion 50 a of the case 50 and is arranged to restrict the contact of the foot with the blower case 50.
The vertical collar portion 61 located laterally outside the lateral collar portion 60 and extending in the front-rear direction is a position slightly higher than the upper surface of the driving portion step 3, and along the horizontal outer edge of the driving portion step 3, It is disposed so as to be located on the same side as the lateral outer edge of 3 or slightly on the lateral outer side. Therefore, the longitudinal heel portion 61 also plays a role of restricting the movement of the foot hooked to the driver step 3 to the laterally outward side relative to the lateral outer edge of the driver step 3.

The guard member 6 is provided on one side of the machine body on the side on which the blower 5 is provided, but, apart from this, on the side on the other side of the machine body on which the blower 5 is not provided, A second guard member 62 is provided.
Similarly to the guard member 6, the second guard member 62 is also bolted at one end to the fertilization support frame 43 supporting the fertilization device 4, and the other end is outside the lateral outer edge of the driver step 3. It passes through and is connected to a part of the vehicle body frame 10 present below the driver step 3.
Similarly to the guard member 6, the second guard member 62 also includes a lateral weir 63a along the lateral direction, and a longitudinal weir 63b located laterally outside the lateral weir 63a and along the longitudinal direction. Even on the side where the blower 5 is not provided, the foot hooked to the driver step 3 is restricted from shifting laterally outward from the lateral outer edge of the driver step 3 (see FIG. 3). .

[Operation step]
The driving unit step 3 provided in the driving unit B is configured as follows.
The operation unit step 3 is a synthetic resin material processed by injection molding, which has a higher degree of freedom in design of the shape and structure as compared with a blow molded product and is easy to form with high accuracy. Because of this, it is possible to select a relatively free shape or structure.

As shown in FIG. 3, FIG. 6, and FIG. 7, the driver step 3 is a front step 3A located at the front end of the machine and a main step located forward of the driver's seat 15 in the longitudinal direction of the machine. The rear step portion 3C is located on the rear side of the driver seat 15.
The front step 3A and the main step 3B have substantially the same upper surface, but the rear step 3C has the upper surface at a position one step higher than the upper surfaces of the front step 3A and the main step 3B. .
That is, when the operator replenishes fertilizer to the fertilization tank 40, the upper step of the rear step portion 3C allows the driver to board, and the mat-like seedlings taken out from the spare seedling platform 16 to the seedling platform 20 of the seedling planting device 2. The top surface of the front step portion 3A and the main step portion 3B is made higher than the top surface of the front step portion 3A and the main step portion 3B in order for the driver to set foot when supplying.

  The front step portion 3A is provided outside the portion where the engine bonnet 19 of the driving portion A exists. That is, a region corresponding to the engine room covered by the engine bonnet 19 is cut away, and a U-shape with the rear side open in plan view so that the upper surface which can be boarded exists on the front and left and right sides of the engine bonnet 19 The front step portion 3A is configured by the step plate 30.

The main step portion 3B has a right main step plate 31R located on the front side of the position of the driver's seat 15 in the longitudinal direction of the vehicle, a left main step plate 31L, and their right main step plate 31R and left main step plate 31L. The right main extension plate 33R and the left main extension plate 33L are provided laterally outward. Further, among the right rear step plate 32R and the left rear step plate 32L described later, the upper surface of the front plate portion 32a positioned on the front side of the rising portion 3D is also included as a part of the main step portion 3B.
The right main expansion plate 33R and the left main expansion plate 33L are fixed to the vehicle body frame 10 separately from the right main step plate 31R and the left main step plate 31L respectively, and the right main step plate 31R and the left main step plate 31L Is separately configured to be removable.
Moreover, the boarding step 64 for getting on / off to the driving unit step 3 from the side is provided at the laterally outer position of the right main expansion plate 33R and the left main expansion plate 33L.

The right main step board 31R and the left main step board 31L are positions where the main step portion 3B is divided into two right and left along the left and right division line L1 (corresponding to a division line) that matches the center line CL of the traveling body 1 in the left and right direction. It is divided by and individually removable.
The left and right division line L1 is formed to be connected to the through hole 31a provided at the center of the traveling body 1 in the left and right direction. The through hole 31 a is a through hole 31 a for exposing the grip portion of the operation tool 13 a erected above the transmission case 13 onto the driving unit step 3. Thus, the left and right division lines L1 are formed so as to be connected to the through holes 31a, so that the right main step plate 31R and the left main step plate 31L do not need to be detached and the like for the through parts such as the operation tool 13a. Can be desorbed.

As shown in FIGS. 3, 6, and 7, a floor mat 35 (corresponding to a covering member) is laid over the right main step plate 31R and the left main step plate 31L. The floor mat 35 has a length in the front-rear direction covering substantially the entire left and right division line L1 located at the center of the main step portion 3B, and in the left and right direction, left and right perspective floor portions described later provided in the main step portion 3B. It has the left-right direction length about the interval width of 7 comrades.
Also in the floor mat 35, through holes 35a of the same shape are formed at locations corresponding to the existing positions of the through holes 31a connected to the left and right division lines L1.

The rear step portion 3C is provided on the rear side of the main step portion 3B and at a position higher than the main step portion 3B with the rising portion 3D interposed therebetween.
The rear step portion 3C includes a right rear step plate 32R, a left rear step plate 32L, and a right rear expansion plate 34R positioned laterally outward of the right rear step plate 32R and the left rear step plate 32L, and the left rear step plate 32R. And a rear expansion plate 34L.

The right rear step plate 32R and the left rear step plate 32L respectively include a rising plate portion 32b constituting the rising portion 3D, a front plate portion 32a positioned on the front side of the rising plate portion 32b, and a rising plate portion 32b. And a rear plate portion 32c located on the rear side.
The rear plate portions 32c, 32c, and the right rear expansion plate 34R and the left rear expansion plate 34L located laterally outside of the rear plate portions 32c, 32c constitute a rear step portion 3C positioned higher than the main step portion 3B. .

A mounting portion for supporting the lower surface side of the driver's seat 15 on the seat fixing portion 65 (see FIG. 8) provided on the upper portion of the rear vertical frame 10B at the opposing portion of the right rear step plate 32R and the left rear step plate 32L An opening 36 is provided.
The mounting opening 36 overlaps with the upper notch portion 36 a provided in the rear plate portion 32 c so as to open a range overlapping with the sheet fixing portion 65 in plan view, and a range overlapping with the sheet fixing portion 65 in longitudinal direction And a front notch portion 36b provided in the rising plate portion 32b so as to open the opening.

The mounting opening 36 is a vertical dividing line L2 (corresponding to a dividing line) provided on the rising plate portion 32b so that the front end side is continuous with the left and right dividing line L1 of the right main step plate 31R and the left main step plate 31L described above. And the rear end side is connected to another left and right division line L3 (corresponding to a division line) formed in the rear plate portion 32c.
As shown in FIG. 3, another left and right division line L3 formed in the rear plate portion 32c is formed at a position slightly shifted leftward from the center line CL in the left and right direction of the traveling airframe 1. For this reason, the other left and right division lines L3 are not aligned in the same straight line with the left and right division lines L1 of the right main step plate 31R and the left main step plate 31L and the vertical direction division line L2.
Therefore, the right rear step plate 32R and the left rear step plate 32L are divided at the center of the machine at the position where the vertical division line L2 on the front end side exists, but at the position where another left and right division line L3 exists. It is not symmetrical but is asymmetrical.
This is because when one of the right rear step plate 32R and the left rear step plate 32L is detached in the left-right direction at a position where members and shapes fixed around the seat fixing portion 65 are not necessarily arranged in left-right symmetry. This is in order to be able to perform work conveniently without detaching the driver's seat 15, the other right rear step plate 32R or the left rear step plate 32L.

Where the vertically oriented dividing line L2 is present, one of the opposing edges of the right rear step plate 32R and the left rear step plate 32L, that is, the opposing edge on the right side in this embodiment is straight The other opposite edge, that is, the left opposite edge, is a bent opposite edge 37b which is partially recessed away from the one opposite edge 37a.
A U-shaped through hole 37 passing through the driving unit step 3 is formed by the straight opposed edge 37 a and the bent opposite edge 37 b. The U-shaped through hole 37 is formed such that the hole diameter in the direction along the vertical division line L2 is longer than the hole diameter in the direction intersecting the vertical division line L2. Then, a swinging operation tool 66 such as a hydraulic lever, for example, is inserted into the U-shaped through hole 37 so that the swinging operation can be performed.
As described above, the U-shaped through hole 37 formed to include the vertical direction dividing line L2 needs to detach the swing operation tool 66 when detaching the right rear step plate 32R or the left rear step plate 32L. It is possible to carry out the detachment work. In addition, even if the opening length required for the swing operation is set long, since it exists on the vertical division line L2, it is not so conspicuous for the size and a large change in structure is also required. Absent.

The U-shaped step plate 30 and the right main step plate 31R and the left main step plate 31L are separated from each other at the boundary between the front step portion 3A and the main step portion 3B separately from the left and right division lines L1, L2 and L3. It is configured to be divisible back and forth by a direction division line L4 (corresponding to a division line).
Further, the main step portion 3B and the rear step portion 3C are also configured to be divisible back and forth by the front and rear direction division line L5 at a position deviated in the front and rear direction from the rising portion 3D. In this embodiment, the right main step plate 31R and the left main step plate 31L, and the right rear step plate 32R and the left rear step plate 32L can be divided back and forth along the front and rear direction dividing line L5 before the rising portion 3D. It is.

U-shaped step plate 30 in the front step portion 3A, right main step plate 31R and left main step plate 31L in the main step portion 3B, and right rear step plate 32R and left rear step plate 32L in the rear step portion 3C , Are fixed to the vehicle body frame 10 by the step fixing portion 38.
As shown in FIG. 3, FIG. 6, and FIG. 7, the step fixing portion 38 is provided relatively near to the front and rear direction dividing lines L4 and L5 or the left and right dividing lines L1 and L3 and near the outer peripheral edge. ing.

  The right rear step plate 32R in the rear step portion 3C has an opening 39a in which the tool insert 67 can be attached and an opening 39b in which the cup insert 68 can be attached at a portion corresponding to the periphery of the driver seat 15 thereafter in the plate portion 32c. It is formed.

[Fluorescent floor]
The driving unit step 3 is provided with a fluoroscopic floor 7 capable of looking down the lower side of the traveling vehicle 1.
The fluoroscopic floor 7 is provided on the left and right sides of the front step 3A, the main step 3B, and the rear step 3C. Each of the fluoroscopic floor portions 7 is provided at a position laterally outward from the driver's seat 15 in the left-right direction.

That is, the first fluoroscopic floor section 7 provided in the main step section 3B is provided at a position where the driver mounted on the driver's seat 15 can easily see the direction and the like of the front wheel 11F.
The second fluoroscopic floor section 7 provided in the rear step section 3C is provided at a position where a driver who is seated on the driver's seat 15 can easily look back and visually recognize the direction of the rear wheel 11R and the like.
The third fluoroscopic floor portion 7 provided in the front step portion 3A is provided at a position where a driver mounted on the driver's seat 15 can visually check the front of the vehicle below the front step portion 3A. For example, when turning on a headland with a large rice transplanter etc., it proceeds to the very edge and then retreats and turns, in which case the degree of closeness between the fuselage and the boat can be viewed through the third fluoroscopic floor section 7.

  The fluoroscopic floor portion 7 is constituted by a group of through holes 70 arranged radially along the radial direction starting from the center of the seat portion of the driver's seat 15 or the position of the driver's seat 15 or the position near the driver's seat 15 There is. That is, although the origin of the radial direction is based on the position of the driver's line of sight in a state where the driver who is seated in the driver's seat is in the mounted posture while viewing it, there are individual differences to some extent. There is no problem as long as Further, it may be within a range where the user can lean and stand up near the driver's seat 15 outside the range where the driver's seat 15 is present, to some extent.

The fluoroscopic floor portion 7 is constituted by a grid-like member by a combination of a radial direction crosspiece member 71 along the arrangement direction of the through holes 70 arranged in a radial direction and a cross direction crosspiece member 72 intersecting the radial direction crosspiece member 71 There is.
Among them, the cross direction cross member 72 provided in the main step portion 3B and the rear step portion 3C is formed substantially along the longitudinal direction of the machine, and whether or not the front wheel 11F and the rear wheel 11R are directed straight ahead It also plays a role as an indicator of

As described above, the fluoroscopic floor portion 7 is arranged in a radial direction along the radial direction starting from the seat center of the driver's seat 15 or the position of the driver's seat 15 or the position near the driver's seat 15. When configured, the area of the area visible through the fluoroscopic floor 7 by the driver viewed from the seat center of the driver seat 15, or the position of the driver seat 15, or the position near the driver seat 15 is expanded as much as possible. And the visibility can be improved.
Moreover, in the radial direction cross member 71 and the cross direction cross member 72 constituting the through holes 70 of the fluoroscopic floor portion 7, the distance between the adjacent cross direction cross members 72 is the distance between the adjacent radial direction cross members 71. It is set more widely.
By thus setting the distance between adjacent cross direction cross members 72 wide, the distance between adjacent cross direction cross members 72 is narrower than the distance between adjacent radial direction cross members 71, Alternatively, compared to the case where the level is set to the same degree, there is less possibility that the area of the visible region of the driver who views the fluoroscopic floor 7 mounted on the driver's seat 15 is reduced. Therefore, the visibility of the driver can be further improved.

[1 of another embodiment]
In the above embodiment, the vehicle body frame has one end on the inboard side of the guard member 6 bolted to the fertilization support frame 43 supporting the fertilization device 4 and the other end on the lower side of the driving unit step 3 Although the thing of the structure connected with a part of 10 was illustrated, it is not restricted to this structure.
For example, as shown in FIG. 9, a handrail 8 may be provided on the lateral side of the driver step 3, and the handrail 8 may support the end of the guard member 6 on the outer side.
At this time, one end of the guard member 6 on the in-machine side may be supported by the fertilization support frame 43 as shown in FIG. 9 or not supported by the fertilization support frame 43 and positioned below the rear step portion 3C. It may be supported by another body fixing portion.
The other configuration may adopt the same configuration as that of the embodiment described above.

[2 of another embodiment]
Although the above-mentioned embodiment illustrated the thing of the structure which provided the guard member 6 independently in the front side of the blower 5, it is not restricted to such a structure.
For example, as shown in FIG. 9, a temporary holder 69 may be provided on the guard member 6 using the guard member 6.
The temporary holding table 69 is effective when temporarily placing the fertilizer bag when the fertilizer is charged into the fertilization tank 40, and the upper surface of the rear step portion 3C as the operation step 3 and the fertilization tank 40. It is desirable to be provided in the height position equivalent to the middle part with the fertilizer input port of the above.
In addition, when at least a part of the temporary mounting table 69 is provided at a position overlapping with the upper side of the blower 5 in a plan view, the temporary mounting table 69 also functions as a protective member for the upper side of the blower 5, which is more effective. .
The other configuration may adopt the same configuration as that of the embodiment described above.

[3 of another embodiment]
In the above embodiment, although the piping 52 on the intake side of the blower 5 is provided at the rear outer side than the rear end of the rear step portion 3C, it is not limited thereto.
For example, as shown in FIG. 9, the piping 52 may be provided in a state of penetrating the rear step portion 3C. In this case, it is effective in that the bending of the piping 52 and the arrangement distance can be reduced somewhat.
The other configuration may adopt the same configuration as that of the embodiment described above.

[4 of another embodiment]
Although the thing of the structure provided with the fertilization apparatus 4 in the back of a traveling body was illustrated in said embodiment, it is not limited to this structure.
For example, as shown in FIG. 10, it may be a structure without the fertilizing device 4.
In this case, as the driving unit step 3, the rear step unit 3C may be configured as follows.
That is, the extension step plate 9 is provided on the rear side of the right rear step plate 32R and the left rear step plate 32L, and the rear step is performed by the right rear step plate 32R, the left rear step plate 32L, and the extension step plate 9 It is good to constitute part 3C.
In this case, another longitudinal division line L6 is formed between the right rear step plate 32R and the left rear step plate 32L and the extension step plate 9. Therefore, the extension step plate 9 can be removed separately from the right rear step plate 32R and the left rear step plate 32L, and the right rear step plate 32R or the left rear step plate 32L can be removed separately from the extension step plate 9. Can.
The other configuration may adopt the same configuration as that of the embodiment described above.

[5 of another embodiment]
In the above embodiment, considering the expansion plates 33R, 33L, 34R and 34L, the left and right division lines L1, L2 and L3 and the front and rear direction division lines L4 and L5 are used as the driving unit step 3 Although a five-divided structure is exemplified, the present invention is not limited to this structure.
For example, the U-shaped step plate 30 of the front step portion 3A can also be split left and right, or the right main step plate 31R and the right rear step plate 32R are integrated, and the left main step plate 31L and the left rear step plate 32L The right main step plate 31R and the right rear step plate 32R, or the left main step plate 31L and the left rear step plate 32L may be integrally removed.
The number of divisions is not limited to five, and division into two or more suitable divisions may be possible. Further, more divisions of six or more may be possible.
The other configuration may adopt the same configuration as that of the embodiment described above.

[6 of another embodiment]
In the above embodiment, the divisible structure is exemplified as the driving unit step 3. However, the invention is not limited to this, and the driving unit step 3 of the undividable integral structure may be adopted.
The other configuration may adopt the same configuration as that of the embodiment described above.

[Seventh Embodiment]
In the above embodiment, the fluoroscopic floor 7 is provided on both the left and right sides of the front step 3A, the main step 3B, and the rear step 3C. It is not limited to the structure.
For example, only the front step 3A, only the main step 3B, or only the rear step 3C, or only the front step 3A and the main step 3B, only the main step 3B and the rear step 3C, Alternatively, it may be provided only in the front step portion 3A and the rear step portion 3C.
The other configuration may adopt the same configuration as that of the embodiment described above.

[8 of another embodiment]
In the above embodiment, the fluoroscopic floor portion 7 has been exemplified by a lattice-like member constituted by a combination of the radial direction cross member 71 and the cross direction cross member 72 intersecting the radial direction cross member 71. It is not limited to this structure.
For example, the driving unit step 3 may be provided with a large number of through holes 70 without adopting a grid-like member.
The other configuration may adopt the same configuration as that of the embodiment described above.

[9 of another embodiment]
In the above embodiment, in the portion provided with the fluoroscopic floor portion 7, all the fluoroscopic floor portions 7 are arranged radially along the radial direction starting from the position where the driver's seat 15 is present or the position near the driver's seat 15. Although the thing of the structure comprised by the hole 70 group was illustrated, it is not necessarily restricted to this.
For example, as shown in FIG. 11, a part of the fluoroscopic floor 7 may be configured by a group of through holes 70 that are long holes in the left-right direction, not radially. In this example, the long hole-like through holes 70 are provided in the left rear step plate 32L of the rear step portion 3C, but the same fluoroscopic floor 7 may be provided in the right rear step plate 32R. .
In particular, in the rear step portion 3C, since the positions of the fluoroscopic floor portion 7 and the driver's seat 15 in the front-rear direction are very close to each other, it is relatively easy even with such a long hole shaped through hole 70 group long in the left-right direction It is easy to visually recognize the condition of the rear wheel 11R.

Further, in the front step portion 3A, the positions of the fluoroscopic floor portion 7 and the driver's seat 15 in the front-rear direction are far apart. At this time, the direction of the line of sight of the driver in the straight-ahead state mounted on the driver's seat 15 is almost immediately before the center line CL in the left-right direction of the traveling body 1. The angle between the center line CL and the virtual line connecting the position of the driver's seat 15 and the location of the fluoroscopic floor 7 in the front step 3A is relatively small, and the direction of the driver's line of sight in the straight ahead state Not so big, not deviated.
Therefore, even if the fluoroscopic floor portion 7 is formed by a group of through holes 70 long in the longitudinal direction along the longitudinal direction of the traveling body 1 in the front step portion 3A, the head is slightly moved laterally If so, it is relatively easy to visually recognize the condition of the front wheel 11F.
The arrangement of the through holes 70 of the fluoroscopic floor 7 is not only in the radial array of the through holes 70 but also through different forms of the through holes 70 depending on the position on the operation unit step 3 where the fluoroscopic floor 7 is provided. It may be configured in combination with 70 groups.
The other configuration may adopt the same configuration as that of the embodiment described above.

[10 of another embodiment]
In the above embodiment, as shown in FIG. 2 to FIG. 4, the boarding step 64 is provided at the middle portion position in the front-rear direction of the driving unit step 3 in the lateral outside of the vehicle. It is not necessarily limited to this structure.
For example, as shown in FIG. 10, it may be provided near the front end portion of the traveling airframe 1 so as to be able to get on and off from the airframe front side, by providing a front landing step 64a that can be footed at the time of getting on and off. It is desirable that the front boarding step 64a be juxtaposed to the boarding step 64 for boarding from the lateral side of the vehicle.
The other configuration may adopt the same configuration as that of the embodiment described above.

  The present invention is not limited to the riding type rice transplanter equipped with the seedling planting device 2 with the eight-row planting specification as shown in the embodiment, but also a riding type equipped with the seedling planting device 2 with different planting number specifications The present invention can be applied to various types of paddy field work machines such as rice transplanters, direct seeders for seeding seeds in fields, and drug sprayers.

REFERENCE SIGNS LIST 1 traveling vehicle 3 driver step 3A front step 3B main step 3C rear step 7 perspective floor 15 driver's seat 70 through hole 71 radial direction cross member 72 cross direction cross member

Claims (8)

A driver's seat is provided on the driver step.
The driving unit step is provided with a fluoroscopic floor portion capable of looking down the lower side of the vehicle body,
The paddy field work machine, wherein the fluoroscopic floor portion is constituted by a group of through holes radially arranged in a radial direction starting from a position where the driver's seat is present or a position near the driver's seat.   The paddy field work machine according to claim 1, wherein the fluoroscopic floor portion is provided at a position laterally outward from the driver's seat in the left-right direction.   The fluoroscopic floor portion is constituted by a grid-like member formed by a combination of a radial direction crosspiece member along the arrangement direction of the through holes arranged radially and a cross direction crosspiece member intersecting the radial direction crosspiece member. The paddy field work machine according to 1 or 2. The driver step is
A main step portion located in the center of the machine in the front-rear direction in front of the driver's seat;
A rear step portion located on the rear side including the lateral side of the driver's seat,
A front step portion located on a front end portion of the airframe forward of the main step portion;
The said perspective floor part is provided in any one or more steps among the said main step part, the said rear step part, and the said front step part. Paddy work machine described.   5. A paddy field work machine according to claim 4, wherein a first fluoroscopic floor portion provided in the main step portion is provided at a position where a driver mounted on the driver's seat can visually observe a front wheel.   The paddy field work machine according to claim 4 or 5, wherein a second fluoroscopic floor portion provided in the rear step portion is provided at a position where a driver mounted on the driver's seat can visually check a rear wheel.   The third fluoroscopic floor portion provided in the front step portion is provided at a position where a driver mounted on the driver's seat can visually check the front of the machine below the front step portion. Paddy work machine according to any one of the above.   The method according to any one of claims 1 to 7, wherein each through hole of the fluoroscopic floor portion is formed in an elongated hole shape in which the hole width in the radial direction is longer than the hole width in the direction intersecting the radial direction. Paddy work machine.

Images