JP2015181359A - Paddy work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform operation with the use of an auxiliary step in a wider width range while suppressing an increase of the size of machine body width.SOLUTION: The machine includes: a travelling machine body 3 with a work device 4 connected on the rear side; a boarding step 40 disposed below an external lateral side of an operation step 16 in the travelling machine body 3, and an auxiliary step 41 provided one step higher than a side region 16C, on a rear side of the side region 16C of the operation step 16. The auxiliary step 41 has a marginal part 41 on its external lateral side overlapping with the same virtual front-to-rear line as a marginal part 40e of an external lateral side of the boarding step 40 as viewed in planar view.

Description

  The present invention relates to a paddy field work machine such as a riding type rice transplanter or a riding type direct sowing machine.

Conventionally, as this type of paddy field work machine, a traveling machine body having a working device connected to the rear part, a step for getting on and off arranged below the lateral side of the driving step in the traveling machine body, and behind the side region of the driving step And an auxiliary step arranged one step higher than the side region (see, for example, Patent Document 1).
In this paddy field machine, the step for getting on and off is provided in a state where the laterally outer edge protrudes laterally from the laterally outer edge of the operation step in plan view, and the auxiliary step is viewed in plan view. In FIG. 2, the inner side in the left-right direction is provided from the lateral outer edge of the boarding / alighting step.

JP 2007-215520 A (FIGS. 1 to 6)

  The auxiliary step can be used, for example, when replenishing seedlings or seeds to the working device behind the traveling machine body, and the driver stands over the rear part of the side region of the handling step and the auxiliary step. As a result, the hand can reach the left and right ends of the working device, and the work can be performed efficiently.

According to the above-described conventional paddy field work machine, for example, when the work using the auxiliary step spans a wider width, such as connecting a work device wider than the width of the traveling machine body, It is desired that the auxiliary step extends to the left and right outer positions.
Therefore, in order to meet such a demand, it is conceivable to provide the auxiliary step in a state of projecting from the laterally outer edge of the boarding / alighting step to the outside in the left-right direction in plan view.

  However, if the traveling aircraft is mainly considered, the width of the aircraft increases because the auxiliary step protrudes to the left and right. For example, when transporting a plurality of traveling aircraft on a transport vehicle at a time, There is a possibility that the number of vehicles loaded on the vehicle may be reduced, and the transportation efficiency may be reduced.

  Accordingly, an object of the present invention is to provide a paddy field work machine capable of solving the above-described problems and suppressing an increase in the body width dimension while performing an operation using an auxiliary step in a wider width range.

  A feature of the present invention is that a traveling machine body having a working device connected to a rear part, a step for getting on and off arranged on the laterally outer side of an operation step in the traveling machine body, a rear side of the side region of the operation step, the side An auxiliary step that is arranged one step higher than the partial region, and the auxiliary step has a virtual edge whose lateral outer edge is the same as the lateral outer edge of the boarding / alighting step in plan view. It is located where it overlaps on the front and rear lines.

  According to the present invention, the auxiliary step is arranged in a state in which the laterally outer edge overlaps the same virtual front and rear line as the laterally outer edge of the step for getting on and off in plan view. Can be set to a position that protrudes laterally outward from the conventional case. Therefore, the work using the auxiliary step can be performed over a wider width range.

  In addition, since the lateral outer edge of the auxiliary step does not exceed the lateral outer edge of the boarding / alighting step, the presence of the auxiliary step does not increase the width of the vehicle body. When transporting at once on a transport vehicle, it is possible to prevent a decrease in the number of vehicles loaded on the transport vehicle and to maintain transport efficiency as before.

  Furthermore, even when a structure such as a wall or a fence is located adjacent to the travel path of the traveling machine body, the auxiliary step does not protrude laterally outward from the step for getting on and off. It is possible to travel with the traveling machine body approaching, and the working range of the working device connected to the rear portion can be ensured as before.

  In the present invention, it is preferable that the auxiliary step is arranged in a state in which the edge portion on the rear end side is positioned in front of the rear end portion of the operation step in plan view.

According to this configuration, a space can be formed between the rear end portion of the operation step and the edge portion on the rear end side of the auxiliary step.
Therefore, this space can be effectively used as an installation space for installing hoses and the like related thereto when, for example, a fertilizer application device, a direct seeding device, or the like is subsequently installed.
As a result, what is installed in the above-described space can be easily prevented from covering the auxiliary step, and the work on the auxiliary step can be more easily performed.

Overall side view of riding rice transplanter Overall plan view of riding rice transplanter Exploded perspective view showing the mounting status of the auxiliary step Plan view of the main part showing the mounting status of the auxiliary step VV arrow view in FIG. Perspective view from diagonally below showing the mounting status of the auxiliary step The top view of the principal part which shows the attachment condition of the auxiliary step of another embodiment VIII-VIII arrow view in FIG. The top view of the principal part which shows the attachment condition of the step for boarding / alighting of another embodiment XX arrow view in FIG.

  FIG. 1 shows an overall side view of a riding type rice transplanter as an example of a paddy field working machine according to the present invention, and FIG. 2 shows an overall plan view thereof. This riding type rice transplanter has a seedling planting device (a working device) of a four-wheel drive type traveling machine body 3 having a pair of left and right front wheels 1 that can be steered and a pair of rear wheels 2 that cannot be steered. For example, 4 includes a basic structure that is connected to be movable up and down via a link mechanism 6 having a four-link structure driven by a hydraulic cylinder 5, and a fertilizer 7 is provided at the rear of the traveling machine body 3. The spare seedling platform 8 is erected on the left and right of the front part of the traveling machine body 3.

  The traveling body 3 is provided with a mission case 9 that pivotally supports the front wheel 1, and the rear wheel 2 is pivotally supported at the rear end of a swing case 10 that is connected to the rear left and right of the mission case 9 so as to swing up and down. ing. A front frame 11 extending forward from the mission case 9 is equipped with a prime mover 13 in which an engine (not shown) is accommodated in a bonnet 12 so that the engine power is transmitted to the transmission case 9 as a belt. A steering handle 14 for steering the front wheels is provided above the rear part of the driving part 13, and a driver seat 15 is provided at the rear part of the traveling machine body 3. A driving step 16 is provided at the foot between the driving unit 13 and the driver seat 15 (see FIG. 1).

  The seedling planting apparatus 4 is a rotary type that places seedlings in parallel and reciprocates left and right with a set stroke, cuts out seedlings one by one from the lower end of the seedling placing base 21, and transplants them into the field. The planting mechanism 22 is configured to include a leveling float 23 arranged in parallel on the left and right sides to level the planting site. The working power taken out from the rear part of the mission case 9 is seeded through the telescopic transmission shaft 24. It is transmitted to the planting device 4 (see FIG. 1).

  The fertilizer application device 7 is mounted on the traveling machine body 3 between the driver seat 15 and the seedling planting device 4, and a fertilizer hopper 25 for storing powdered fertilizer and the fertilizer in the fertilizer hopper 25 are fed out by a set amount. An unwinding mechanism 26, an electric blower 29 for wind-feeding the unloaded fertilizer to a grooving device 28 provided on the leveling float 23 via a supply hose 27, and a discharge hose used for discharging the fertilizer remaining in the fertilizer application device 7. 29a and the like (see FIG. 1).

  The driving step 16 includes a main region 16A on the left and right center side, a rear region 16B located behind the main region 16A, and a side region 16C elongated in the front and rear sides on both sides of the main region 16A. (See FIG. 2).

The main region 16 </ b> A is formed by pressing a metal plate material, and the front end portion extends to the left and right of the driving portion 13.
The rear region 16 </ b> B is formed so as to protrude upward on the left and right sides of the driver seat 15.
The side region 16 </ b> C is disposed overlapping the front wheel 1 to extend the driving unit step to the left and right. Further, the side region 16C is configured to include a surface material 16Ca that is resin-molded in a sawtooth shape, and the planar shape of the front half of the side region 16C is a tapered shape in which the outer side is located closer to the body side toward the front end side. Thus, the driver can see through the front wheel 1 through the side region 16C.

  As shown in FIGS. 3 to 5, the side region 16 </ b> C is configured by disposing a surface material 16 </ b> Ca inside a peripheral frame 36 made of a round pipe material, and the surface material 16 </ b> Ca is a support bracket provided on the peripheral frame 36. 38 and a plurality of support frames 37 are detachably connected by screws. The peripheral frame 36 is detachably coupled and supported to the support member 30 on the traveling machine body 3 side by a bolt 30a through a part of the plurality of support frames 37.

  Below the lateral outer side of the side region 16 </ b> C, a step 40 for getting on and off having a substantially “U” shape in a side view is provided in a state of being fixed to the peripheral frame 36. Further, an auxiliary step 41 is provided at a position higher than the side region 16C behind the side region 16C. By using this auxiliary step 41, for example, when the seedling is replenished to the seedling platform 21 or the fertilizer is supplied to the fertilizer application device 7, the driver puts his feet on the seedling platform 21 or the fertilizer application device. It is possible to work while standing closer to 7 etc.

  In the step 40 for getting on and off, both ends of a “U” -shaped step body 40 b are bolted to brackets 40 a fixed at two positions with a space in the longitudinal direction of the peripheral frame 36. The step body 40b is fixed in an inclined posture that is located laterally outward of the traveling machine body 3 toward the lower side, and the tread plate portion 40c provided in the step body 40b is located laterally outward from the side region 16C. When getting on and off the driving step 16 from the ground surface, the foot can be carried in a smooth and stable state.

As shown in FIGS. 4 and 6, the auxiliary step 41 has a substantially rectangular shape in plan view and is formed by blow molding of synthetic resin.
The auxiliary step 41 is supported on the lower surface side by the front column 42 and the rear column 43.
On the lower surface of the auxiliary step 41, a front column groove M1 into which the upper end portion 42a of the front column 42 can be fitted and a rear column groove M2 into which the upper end portion 43a of the rear column 43 can be fitted are formed.

The rear strut groove M2 is formed on the rear side of the auxiliary step 41 so that the longitudinal direction of the groove is along the left-right direction of the traveling machine body 3, and the front strut groove M1 extends from the center of the rear strut groove M2 to the auxiliary step 41. It is formed in a continuous state up to the front side. That is, the two support grooves M1 and M2 intersect each other in a “T” shape on the lower surface of the auxiliary step (see FIG. 4).
As a result, even if the auxiliary step 41 is constituted by a thin skin member formed by blow molding, the cross-sectional secondary moment can be largely ensured in any crossing direction by the intersecting groove structure. The overall rigidity in the front-rear and left-right directions can be enhanced.

  In both the column grooves M1 and M2, linear upper end portions 42a and 43a of the columns 42 and 43 (described later) are arranged along the longitudinal direction of the groove and fitted into the grooves. The auxiliary step 41 is fixed to each of the columns 42 and 43 by a female screw portion that is integrally inserted into the horizontal brackets s provided at the upper end portions 42a and 43a of the columns 42 and 43 when the auxiliary step 41 is formed. 41a is overlapped and bolted and fixed so as to penetrate the horizontal bracket s from below (see FIG. 5).

  In addition, the front edge part of the auxiliary | assistant step 41 is formed as the front wall part 41b drooping to the front lower side (refer FIG. 5). The front wall portion 41 b makes it difficult for the lower surface portion of the auxiliary step 41 to be seen from the front side of the traveling machine body 3. The aesthetics are improved by the blindfold effect by the front wall 41b.

  The front strut 42 is made of a round pipe material, and as shown in FIG. 5, the upper and lower intermediate portions are formed in a shape that is recessed backward in a “<” shape in a side view. The concave portion 42 b is provided in a state of entering below the auxiliary step 41. Further, the upper end portion 42a of the front column 42 is formed in a state in which the round pipe material extends linearly from the upper end side of the concave portion 42b to the front side, and as described above, the front support groove of the auxiliary step 41 It is comprised so that it can insert along M1. And the horizontal bracket s for fixing the auxiliary | assistant step 41 is adhering to the outer peripheral surface of this upper end part 42a. The lower end portion 42 c of the front support 42 is fixed to the rearmost support frame 37 fixed to the peripheral frame 36. The lower end portion 42c is linearly extended to the rear side, and the concave portion 42b is connected to the rear side.

  The lower end portion 42 c of the front support post 42 fixed to the support frame 37 is disposed at a position lower than the surface material 16 C of the side region 16. Therefore, when the foot is placed on the surface material 16C, the lower surface of the foot does not come into contact with the lower end portion 42c, so that the foot can be prevented from being caught.

  Further, the bolt 31a fixing the support frame 37 to the support member 30 on the traveling machine body 3 side is provided to be screwed from the rear side of the traveling machine body 3, but the screwing tool can be operated smoothly. As described above, an insertion hole 40d through which the bolt 31a and the screwing tool can be inserted is formed at a corresponding portion of the bracket 40a of the step 40 for getting on and off which covers the rear side of the bolt 31a (see FIG. 6).

  Thus, the driver holds one foot side by the structure in which the lower end portion 42c of the front support post 42 is attached lower than the surface material 16 and the structure in which the recessed portion 42b recessed rearward is provided in the front support post 42. When carrying out operations such as seedling replenishment with the other foot placed on the auxiliary step 41 while remaining in the partial region 16C, the toe of one foot left in the side region 16C is deeply below the auxiliary step 41. The body can be moved in and the body can be moved further backward in a stable state, and the work can be efficiently performed.

  As shown in FIGS. 4 and 6, the rear strut 43 is formed by extending the same round pipe material at the rear portion of the peripheral frame 36, and an inclined portion 43 b that extends obliquely upward on the rear side. The upper end portion 43a is bent from the upper end of the inclined portion 43b to the inner side in the left-right direction of the traveling machine body 3 and extends straight as it is. Moreover, the upper end part 43a of the back support | pillar 43 is comprised so that it can fit along the back support groove | channel M2 of the auxiliary | assistant step 41 as mentioned above. And the horizontal bracket s for fixing the auxiliary | assistant step 41 is adhering to the outer peripheral surface of this upper end part 43a. Moreover, the front-end | tip part of the upper end part 43a is mounted on the bracket 31 integrally provided in the traveling body 3 side, and is being fixed with the volt | bolt 31b which penetrates both up and down.

As described above, the auxiliary step 41 supported by the front strut 42 and the rear strut 43 has a laterally outer edge 41c at the laterally outer side of the getting-on / off step 40 in a plan view as shown in FIG. It is arranged so as to overlap on the same virtual front and rear line L as the edge portion 40e.
Therefore, the auxiliary step 41 can be installed in a state in which the maximum body width is used, and a larger plane area of the auxiliary step 41 can be secured, so that the work performed on the upper side becomes easier to perform. In addition, since the width of the airframe does not increase due to the presence of the auxiliary step 41, for example, when a plurality of traveling airframes 3 are transported at once in a transport vehicle, the number of vehicles loaded on the transport vehicle is reduced. Can be prevented and transportation efficiency can be maintained as before.

  Furthermore, the edge 41e on the rear end side of the auxiliary step 41 is arranged in a state of being positioned in front of the rear end 16Ba in the rear region 16B of the operation step 16. In a range 44 formed between the edge 41e on the rear end side of the auxiliary step 41 and the rear end 16Ba of the rear region 16B, the discharge hose 29a is connected to the traveling machine body when the fertilizer is removed from the fertilizer application device 7. 3 can be positioned in a state of being extended to the side (see FIG. 2).

  Further, the auxiliary step 41 is arranged in an inclined posture in which the front part is lower than the rear part, and even if water is splashed on the upper surface, it is possible to prevent water from flowing along the gradient and collecting on the upper surface. Therefore, it is possible to prevent the foot placed on the upper surface from sliding with water (see FIG. 5).

[Another embodiment]
Other embodiments will be described below.

<1> The paddy field working machine is not limited to the riding type rice transplanter described in the previous embodiment, and may be, for example, a riding type direct seeding machine, and is collectively referred to as a paddy field working machine.

<2> The operation step 16 of the paddy field work machine is not limited to the main region 16A and the side region 16C described in the previous embodiment being configured as separate members, but is configured integrally. There may be.

<3> The auxiliary step 41 is not limited to that described in the previous embodiment, and the shape, material, manufacturing method, and the like can be changed.
Further, the support of the auxiliary step 41 is not limited to the support by the front struts 42 and the rear struts 43 described in the previous embodiment, and for example, the number, arrangement, and installation structure of the struts can be changed.

<4> Regarding the arrangement of the auxiliary step 41, the laterally outer edge 41c in plan view is disposed so as to overlap the same virtual front and rear line L as the laterally outer edge 40e of the getting-on / off step 40. Is not limited to the fact that the respective edge portions 40e and 41c overlap on the same virtual front and rear line L over the entire length in the front and rear, and the outermost edges of the respective edge portions 40e and 41c are on the same virtual front and rear line L. It may overlap.

<5> With regard to the arrangement of the auxiliary step 41, as described in the previous embodiment, the edge 41e on the rear end side of the auxiliary step 41 is positioned in front of the rear end 16Ba of the driving step 16 in plan view. For example, as shown in FIGS. 7 and 8, the edge 41 e on the rear end side of the auxiliary step 41 and the rear end 16Ba of the operation step 16 are not limited to being arranged in the state. May be arranged in the same direction in the front-rear direction. Furthermore, you may arrange | position so that the edge part 41e by the side of a rear end may be located back from rear-end part 16Ba of the driving | running | working step 16. FIG.
Moreover, the edge part 41e of the rear end side of both the left and right auxiliary steps 41 may be arranged so as not to be aligned in the front-rear direction. For example, only the auxiliary step 41 installed on the side where the discharge hose 29a is fed is provided on the rear end side. The edge portion 41e may be disposed in front of the rear end portion 16Ba of the operation step 16.

<6> The boarding / alighting step 40 is not limited to the shape, arrangement, and mounting structure described in the previous embodiment, and can be changed as appropriate.
As an example, as shown in FIGS. 9 and 10, a step main body 40 b in which a round pipe material is formed in a “U” shape, and extends from the bottom portion of the step main body 40 b to the inside of the traveling machine body 3 and extends over the support frame 37. The step 40 for boarding / alighting may be configured by including the guide pipe portion 40f and the tread plate portion 40c fixed to the bottom portion of the step body 40b.
In the step 40 for getting on and off of this embodiment, both end portions of the step body 40b are fixed to the peripheral frame 36 by welding, and the upper end portion of the guide pipe portion 40d is fixed to the support frame 37 by welding. Then, the laterally outer edge 40e of the step board 40c and the laterally outer edge 41c of the auxiliary step 41 are arranged so as to overlap the same virtual front and rear line L in plan view.

  The invention of the paddy field working machine can be used for a riding type direct seeding machine instead of the riding type rice transplanter.

3 traveling machine body 4 seedling planting device (an example of working device)
16 operation steps 16Ba rear end portion 16C side region 40 step for getting on and off 40e lateral outer edge 41 auxiliary step 41c lateral outer edge 41e rear end side edge L virtual front and rear line

Claims (2)

A traveling machine body having a working device connected to the rear, and
Steps for getting on and off arranged below the lateral outside of the driving steps in the traveling body,
An auxiliary step arranged one step higher than the side region behind the side region of the driving step,
The auxiliary step is a paddy field work machine arranged in a state in which the laterally outer edge overlaps the same virtual front and rear line as the laterally outer edge of the boarding / alighting step in plan view.   2. The paddy field work machine according to claim 1, wherein the auxiliary step is arranged in a state in which a rear end side edge portion is positioned in front of a rear end portion of the operation step in a plan view.

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