JPH1118521A - Machine body structure of sulky type rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the width of a front step which is difficult to extend the left and right width thereof by various restrictions and improve the operating efficiency such as taking in and out of reserve seedlings thereat. SOLUTION: This machine body structure of a sulky type rice transplanter is obtained by installing front steps 73 continued to floor steps 42 of a maneuvering part on left and right lateral sides of a bonnet at the front of a machine body, detachably installing extension steps 68 transversely, outwardly and laterally overhanging from the front steps 73 in the transverse outer lateral sides of the front steps 73, supporting reserve seedling-carrying platforms 66 on the transverse outer lateral parts of the extension steps 68, forming and composing footrest surfaces on the top surfaces of the extension steps 68 of punched metallic plates so that the front of front wheels 1 can visually be confirmed from a maneuvering part through the extension steps 68.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a body structure of a riding type rice transplanter, and more particularly, to a structure provided on a lateral side of a bonnet so as to be convenient for moving a row and a control section and for putting in and out a preliminary seedling. And improvement technology of the front step part.

[0002]

2. Description of the Related Art On the left and right sides of a bonnet arranged in front of the body of a riding type rice transplanter, it is possible to make it possible for a rice transplanter stopped at a headland to move between a row and a ridge without descending to a field. It is common to provide a front step that extends left and right following the floor step in order to use it as a scaffold for loading and unloading spare seedlings on the spare seedling table on the side of . For example, Japanese Utility Model 60-116
Japanese Patent Application Laid-Open Nos. 819 and 9-28131 disclose a structure having a front step.

[0003]

If the width of the left and right front steps is large, it is possible to walk and move while facing the front without turning sideways. At present, the approximate width is determined by various restrictions, and the width of the front step cannot be broadened unnecessarily at present.

That is, (1) In a rice transplanter, it is necessary to position wheels between adjacent planting strips, for example, two or four crossings, so that the front wheel tread is almost determined by the number of planting strips. (2) The left and right ends of the front steps are wider than the front wheels in the horizontal direction of the fuselage so that the front wheels can be visually checked for accurate positioning of the front wheels when loading / unloading on the truck bed. (3) The engine and its accessories are essential components, and it is difficult to make the bonnet width narrower than it is now. The width was such a value that a person could move somehow (see the drawings of the above-mentioned publications).

However, in view of the recent trend of increasing the efficiency of planting work, the demand for making the front steps wider to facilitate the work of replenishing spare seedlings and supplying spare seedlings to the seedling table is neglected. It was no longer possible and some measures had to be taken. An object of the present invention is to increase the width of the front step while improving the workability there while clearing the above-mentioned restrictions (1) to (3).

[0006]

[Means for Solving the Problems]

[Structure] The first invention includes a front step following a floor step of a control section on a side of a hood in a front part of the fuselage, and an extension step that extends laterally outward from the front step.
At the side position of the front step, it is detachably attached to the body, and it is configured to be able to support the spare seedling mounting table on the lateral outer side of the extension step, and the extension step can be seen through from the upper direction to the step lower direction It is characterized by being constituted so that it becomes.

According to a second aspect of the present invention, in the first aspect, the step of getting on and off the floor step straddles below a rear portion of the floor step and below a floor step portion formed at a front portion of a rear wheel fender. And a rear support arm for supporting a rear part of the getting on / off step is attached to a stay extended rearward so as to enter the floor step part from the floor step.

According to the first aspect of the present invention, the extension step capable of supporting the spare seedling mounting table is detachably attached to the front step so as to project laterally from the lateral end of the front step. At the time of rice planting with spare seedlings mounted on the side, the width of the front step is widened by the extension step and the scaffold is widened, so frequently the seedling rest and spare seedling stand at the rear of the aircraft come and go. It is possible to carry out the work of replenishing seedlings and the work of unloading spare seedlings by frequently going between the ridges and the spare seedling mounting table without worrying about the posture and the place where the feet are placed.

Since the extension step can be seen from above to below the step, the operator stands up from the driver's seat and visually aligns the position of the front end of the front wheel with the step board or the crossing for crossing the groove. , The extension step can be performed in anticipation. In other words, while the extension step is located just above the front wheel, it is possible to visually check the position of the front wheel, and widen the width of the front step while clearing the restrictions (1) to (3) described above. Was completed.

The above-mentioned operation is achieved by forming the width of the front step itself to be wide including the extension step width and forming a plurality of small holes for viewing the front wheel at a position corresponding to the extension step portion. It is likely that the same effect can be obtained. However, if the left and right portions of the fuselage are made heavy by mounting the spare seedlings, it is difficult to control the balance. For this reason, there are many uses where the seedlings are placed on the ridge in a narrow field and the spare seedlings are not mounted beside the bonnet.
In that case, it is only necessary to be able to use it infrequently, such as moving from the ridge to the control section, and the width of the front step section is not particularly problematic, so you can clearly see the front wheel position,
It is desirable that there be no extension step in view of the ease of inspection and maintenance of the front wheel portion and the smart appearance of the aircraft.

In other words, depending on whether the spare seedling is mounted on the side of the bonnet or not, an extension step is not necessary or necessary. Therefore, as in the comparative example, the front step is widened from the original. The extension means can be added later only when necessary, and when unnecessary, the means of the present invention, which can make the front wheel visually confirmable and excellent in appearance and easy to maneuver, are more suitable for rice planting work. It can be said that it is a desirable one conforming to the above.

According to the second aspect of the present invention, since the rear part of the getting on / off step is attached to the stay extending rearward from the floor step, the connecting portion between the fender and the getting on / off step can be eliminated. Therefore, even when the fender is removed during inspection or maintenance, the getting on / off step can be used in an original state with sufficient strength. Conventionally, the rear part of the getting on / off step is bolted to the member on the body frame side together with the fender, so that when the fender is removed, the rear part of the getting on / off step is also disengaged and cannot be used. Has the effect of eliminating the inconvenience.

[0013] The riding rice transplanter according to the first or second aspect of the present invention has the following advantages. In order to improve the workability, the work resulting from the mounting of the spare seedling can be performed lightly on a wide step surface while satisfying the above-mentioned constraint conditions (1) to (3). It was possible to provide an airframe structure that not only improved, but also could be removed and operated easily when not needed, and also achieved a good appearance.

According to the second aspect of the present invention, in addition to the above-mentioned effect (a), the step of getting on and off the vehicle can be favorably used even when the fender is removed, and there is an advantage that inspection and maintenance workability is excellent.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a seedling planting device 4 as a planting unit is connected to the rear of a riding type traveling body having a pair of left and right front wheels 1 and a rear wheel 2 via a link mechanism 3 so as to be able to move up and down. The fertilizer applicator A is provided at a position on the front side of the seedling transplanter 4 and immediately after the driver's seat 67 to constitute a rice transplanter with a mid-type fertilizer. Reference numeral 43 denotes a fertilizer mounting table for reducing the labor required to supply the fertilizer to the fertilizer hopper 18.

In this rice transplanter, the power of the engine E mounted in the hood 5 of the traveling body is transmitted to the front wheels 1 via the front transmission case 6 and also transmitted via the traveling system transmission shaft 7 and the rear transmission case 8. It is a four-wheel drive type that is transmitted to the rear wheels 2, and is configured to steer the left and right front wheels 1 by operating the steering wheel 10 of the boarding operation unit 9. A PTO shaft 11, which is a planting system transmission shaft, extends rearward from the front transmission case 6, and power is transmitted from the PTO shaft 11 to the seedling planting device 4, so that the vehicle travels in the field. It is configured so that the seedling planting operation can be performed while doing so.

The seedling planting device 4 includes a hydraulic cylinder 1 for lifting and lowering.
With the expansion and contraction operation of 2, the raising and lowering operation can be freely performed between a working position for seedling planting whose lower end is in contact with the field scene and an ascending position which moves largely upward. The seedling rest 14, which reciprocates laterally at a set pitch along the vehicle body width direction with respect to the planting section frame 13 connected and supported by the link mechanism 3,
Plural (six) planting mechanisms 15 for taking out seedlings one by one from the lower end of the seedlings to be planted placed on the seedling mounting stand 14 and planting them in the field, a grounding float for leveling the mud surface while grounding in the field It is configured in a six-row planting format with 58 or the like.

A vertical feeder 16 for feeding a set amount of seedlings placed at the end of the lateral movement stroke toward the planting mechanism 15 is provided at a seedling placement portion of the seedling mounting table 14 for each planting strip. Have been. The vertical feeding device 16 is configured such that a belt with a projection is wound over a pair of upper and lower pulleys, and a lower pulley is rotated by a predetermined amount by a contact action at a stroke end.

The longitudinal feed device 16 has a longitudinal feed clutch (not shown) that can be switched between a state in which the longitudinal feed operation is performed and a state in which the operation is stopped every two lines, although the structure is not described in detail. Is provided. In the ground float 58, at each location adjacent to the planting site of the seedling in each planting line, a groove for entering the mud layer below the ground surface and supplying fertilizer to the mud surface. Is formed.

Next, the fertilizer applicator A will be described. FIG.
As shown in the figure, the fertilizer applicator A includes a three-piece integrated fertilizer hopper 18 for storing powdered and granular fertilizer, a feeding mechanism 19 for feeding a predetermined amount of fertilizer therefrom, and a seedling planting device for feeding the fed fertilizer. And a fertilizing hose (an example of a flow-down route) 21 to be sent to the groove generator 17 of No. 4. The feeding mechanism 19 has a funnel section 18 for each strip of the fertilizer hopper 18.
located below a, a plurality (6) corresponding to each planting strip
It is provided. The fertilizer fed from each feeding mechanism 19 is forcibly transferred to each of the groove producing devices 17 through the fertilizing hose 21 by blowing air from the blower 20.

As shown in FIG. 3, the feeding mechanism 19 is fitted inside the casing 22 so as to be rotatable integrally with the feeding shaft 23 in a state facing the bottom opening of the fertilizer hopper 18 and has an outer peripheral portion. Is provided with a plurality of recesses 24 for receiving fertilizer at a predetermined pitch, and the fertilizer stored in the recesses 24 with the rotation of the delivery rotator 25 is filled with a lower funnel. The guide section 26 is configured to be guided downward. In addition, a brush 27 for scraping is provided so as to store a predetermined amount in the recess 24.

The brush 27 is swingable around the horizontal axis P between an operation position located on the outer peripheral surface of the feeding rotator 25 and a fertilizer discharge position separated from the feeding rotator 25, and the brush 27 is provided with a casing 22. Swing together with the switching operation of the switching operation tool 31 provided on the lateral side outside of the vehicle, so that the position is held at each position.

Each of the casings 22 in each of the plurality of feeding mechanisms 19 is supported by a vertical frame 29 fixedly provided from the body frame F, and is fixedly supported by a horizontal frame 30 extended in the lateral direction of the vehicle body. Extension shaft 2
Reference numeral 3 denotes each of the payout rotating bodies 2 for each of the pair of payout mechanisms 19.
5 is provided so as to be divided into three so as to rotate integrally, and two of the six feeding mechanisms 19 are provided.
It is configured such that it can be individually driven and stopped for each time.

The driving structure of the feeding mechanism 19 will be described. As shown in FIG. 2, at a position on the rear side of the feeding mechanism 19, the ferrite applying device A has a length that covers almost the entire width along the vehicle width direction, and is rotatably supported at both end portions. A drive shaft 32 is provided, and a one-way clutch 33 is provided at an intermediate portion of the drive shaft 32 in the width direction. Operation arm 34 of one-way clutch 33 and bevel gear mechanism 2
8, a rotation arm 36 attached to a lateral transmission shaft 35 driven to rotate by the PTO shaft 11 is pivotally connected by an interlocking rod 37, and the operation arm 34 swings with the rotation of the rotation arm 36. The drive shaft 32 is intermittently rotated only in a predetermined direction by the one-way clutch 33.

The drive shaft 32 and the three feed shafts 2
3 are configured to be interlocked by the engagement of the gears 39 and 40 attached thereto, respectively.
Between 2 and 23, a fertilizing clutch 38 capable of turning on and off power separately is provided.

As shown in FIG. 2, a cylindrical blower pipe 45 is disposed in front of the casing 22 with its longitudinal direction extending along the width of the vehicle body. The blower 20 is provided so as to be supported by the horizontal frame 30, and the wind of the blower 20 provided at one lateral end of the blower pipe 45 is supplied into the blower pipe 45.

As shown in FIG. 3, a fertilizer supply section 51 is formed which communicates with the lower end outlet 50 of the funnel-shaped guide section 26 and opens to the rear of the machine body. On the front side of the fertilizer supply unit 51, an air supply unit 52 that connects the lower end outlet 50 and the inside of the blower pipe 45 is formed, and the air supply unit 52 and the fertilizer supply unit 51 are connected to the front and rear of the vehicle body. It is formed so as to be continuous in a substantially straight line along the direction. A discharge section 54 is formed below the lower end outlet 50 to form a discharge path 53 that connects the lower end outlet 50 to the inside of the discharge pipe 48.
Incidentally, the other end of the blower pipe 45 is normally closed by a lid 45a which can be freely opened and closed.

A path switching plate 55, which is capable of switching between a feeding state in which the powder and granular fertilizer fed from the feeding mechanism 19 is guided to the fertilizing hose 21 and a discharging state in which the fertilizer is guided toward the discharging path 53, is provided with a feeding mechanism. It is provided corresponding to each of the nineteen. The path switching plate 55 is pivotably supported around the left and right axis X, and can be switched between a supply position and a discharge position by operating a switching lever (not shown) provided outside the guide portion 26. It is. The supply position is a position where the discharge route 53 is closed and the fertilizer supply unit 51, that is, the fertilizer hose 21 and the blower pipe 45 communicate with the lower end outlet 50, and the discharge position is the internal passage of the fertilizer supply unit 51. At a position where the discharge path 53 and the blower pipe 45 communicate with the lower end outlet 50.

Each discharge section 54 is provided with a discharge pipe 48 for guiding and discharging the discharged fertilizer downward and forward of the machine body, and each discharge pipe 48 is connected to each of the discharge pipes 48 shown in FIGS.
As shown in the figure, three pipes each on the left and right sides are one large-diameter confluence pipe 4 at the lower side in the fertilizer guide direction.
The fertilizer is joined to 8a and distributed to both right and left sides, so that the fertilizer is discharged from a common fertilizer discharge port 49.

When the fertilizer is applied during the seedling planting operation, the path switching plate 55 is switched to the supply position and the blower 20 is turned on.
Of the fertilizer fed by a predetermined amount from the feeding mechanism 19 is sent out from the lower end outlet 50 through the fertilizer supply unit 51 and the fertilizer hose 21 toward the groove generator 17 by wind power and supplied to the field. You do it.

After completion of the planting operation, the fertilizer hopper 1
In order to collect the fertilizer remaining in the hopper 8, the switching lever 56
Is switched to the discharging position, and the brush 27 in the feeding mechanism 19 is switched to the fertilizer discharging position separated from the feeding rotary body 25 to discharge the fertilizer, and the air is blown by the blower 20 to discharge the discharged fertilizer to the lower end outlet. From 50, it passes through the discharge path 53 and the discharge pipe 48, and is discharged from the fertilizer discharge port 49 to the outside. Therefore, if a collection container or the like is positioned corresponding to the fertilizer discharge port 49, fertilizer can be collected.

As shown in FIG. 2, there are six gear-like gears which can be engaged with and disengaged from gear-like rotation adjusters 70 for operating a feed-amount adjusting mechanism (not shown) for each feed-out mechanism 19. Is connected to a rotatable operation rod 72. Each driving rotator 71 and each rotation adjuster 70 engage with each other by the sliding movement of the operating rod 72 to the left, and each driving rotator 71 and each rotation by the sliding movement of the operating rod 72 to the right. The non-operating state in which the engagement with the adjustment tool 70 is released is configured to be able to appear. The right end of the operating rod 72 is provided with a handle 75 for rotating operation. The handle 75 acts on the drive shaft 32 when the feeding amount of the entire feeding mechanism 19 is adjusted by the handle 75 to fix the feeding shaft 23. Switching lever 76
It has.

Next, the structure of the rear wheel fender B will be described. As shown in FIGS. 4 to 6, a fender B for a rear wheel
Is a mudguard 41, 41 of the left and right rear wheels 2, 2, and a floor step portion 44 corresponding to the rear of the floor step 42.
, And a driver's seat 67 is disposed in the center of the rear part. Left and right mudguards 4
The rear portion of each of the base members 41 is formed on a substantially horizontal mounting surface 47 for a footrest at a position where it rises upward from the surface of the floor step 42, and protrudes upward from the rear end of the mounting surface 47. A projection 56 is formed.

That is, when the fender B is formed, the mounting surface 4
The rear end is raised to form the convex portion 56 integrally, and has a function of restricting the foot from being easily depressed behind the mounting surface 47 and a function of improving the strength of the mounting surface 47.
A non-slip material 5 is provided on the mounting surface 47 so that the feet are hard to slip.
7 is stuck.

An auxiliary step 60 is provided on both the left and right sides of the mounting surface 47 of the fender B, and a support pipe (one example of a support member) 61 which is a single long material on the left and right and is supported by the body frame F. The left and right auxiliary steps 60, 60 are attached and supported at both ends, and the rear part of the fender B is attached to the support pipe 61. The auxiliary step 60 includes a front-rearward band steel 60 in a rectangular frame 60a made of a plate material in plan view.
b and a plurality of left-and-right strip steels 60c are fixed and welded and fixed to the support pipe 61. A connecting pipe 64 for connecting the front transmission case 6 and the rear transmission case 8 to reinforce the body frame F;
A reinforcing pipe 65 is provided so as to extend over the bracket 60A fixed to one of the brackets 0c, and the strength of the auxiliary step 60 is improved.

The support pipe 61 is bolted to the upper part of the body frame F via a pair of left and right support stays 61a, 61a fixed to the support pipe 61. And Fender B
The mounting seats 62, 62 provided at the rear end of the
It is bolted to the first bracket 63, 63 in the front-rear direction.

Next, the extension step 68 beside the hood will be described. As shown in FIGS. 8 to 10, front steps (also called round steps) 73, 73 following the floor step 42 are provided on the left and right sides of the bonnet 5. , An extension step 68 projecting laterally outward from the lateral outer edge is detachably mounted. A spare seedling table 66 is supported on the lateral outer side of the extension step 68.
8 is configured to be transparent when viewed in a direction from above to step downward.

That is, the extension step 68 is composed of a frame body 74 obtained by bending a plate material into a rectangular shape and a step surface 77 for placing a foot. It is possible to see through. The frame 74 is attached to the body frame side member 78 below the front step 68 with the front and rear bolts 79, 79, and the two vertical supports 66a, 66a of the spare seedling mounting table 66 are placed inside the outer surface of the frame 74. By inserting and mounting and bolting, the extra seedling table 6
6 is attached. Reference numeral 80 denotes a spare seedling stand, and 81 denotes a marker arm.

As shown in FIG. 8, the step outer edge line a formed by the floor step 42 and the front step 73 is formed in a tapered curved shape that becomes narrower toward the front, and the rear part of the front wheel 1 is a floor step in plan view. 42 and is hidden below, and the front portion of the front wheel 1 barely extends beyond the front step 73. Extension step 73
Is located just above the front part laterally protruding from the outer edge line a of the front wheel 1, but due to the large number of holes in the punching metal,
The front end of the front wheel 1 can be seen from the control section.

Therefore, as shown in FIG. 9, when loading the truck bed using the step board 82, the operator standing on the step floor 42 can see the front end position of the front wheel 1 through the extension step 73. Thus, it is possible to visually check whether the left and right positions of the step board 82 and the front wheel 1 are matched. Also, the step surface 77 of the extension step 68
Is a perforated metal, so that mud and dirt hardly fall off and accumulate, whereby anti-slip action can be expected.

As shown in FIG. 5, the step 69 for getting on and off the floor step 42 is performed by lowering the rear part of the floor step 42 and the floor step part 4 formed on the front part of the fender B.
4 and is provided as a U-shaped member facing upward in a side view in a state of straddling the lower part of FIG. The floor step 42 is mounted so as to cover the floor frame portion 84 therebelow, and a part of the floor frame portion 84 is bolted to a front support arm 69f for supporting the front part of the getting on / off step 69. is there.

The rear support arm 69r for supporting the rear portion of the step 69 is bolted to a stay 83 extending rearward from the floor frame 84. The stay 83 is connected to the floor step 42 and the floor step portion 4 by a bolt.
4 is provided. That is, the step 69 is supported only by the floor frame 84 and is independent of the fender B and its attaching / detaching means.

[Another Embodiment] The step surface 77 of the extension step 68 may be formed of a steel plate with a number of holes formed by press forming, or a steel strip may be fixed to the front, rear, left and right in a frame 74 as in the auxiliary step 60. But it is good.

[Brief description of the drawings]

FIG. 1 is an overall side view of a rice transplanter.

FIG. 2 is a rear view of the fertilizer application device.

FIG. 3 is a longitudinal side view of the fertilizer supply unit.

FIG. 4 is an overall plan view of the rice transplanter.

FIG. 5 is a side view showing a fender and an auxiliary step;

FIG. 6 is a sectional view showing the shape of the rear part of the fender.

FIG. 7 is a plan view showing the structure of an auxiliary step.

FIG. 8 is a plan view showing the structure of an extension step.

FIG. 9 is a side view showing a state in which a front wheel is confirmed during work of a step board.

FIG. 10 is a front view showing a mounting structure of an extension step.

[Explanation of symbols]

 5 Bonnet 42 Floor step 44 Floor step part 66 Spare seedling mounting table 68 Extension step 69 Getting on and off step 69r Rear support arm 73 Front step 83 Stay B Fender

Claims (2)

[Claims] 1. A front step following a floor step of a control section is provided on a side of a hood of a front part of an airframe, and an extension step which extends laterally outward from the front step is provided at a lateral position of the front step. Attachably and detachably attached to the aircraft,
A supplementary seedling mounting table is configured to be supported on the lateral outer side of the extension step, and the extension step is configured to be able to be seen through in a directional view from above to the step below. Airframe structure. 2. The vehicle according to claim 1, wherein the step of getting on and off the floor step is provided so as to straddle a rear lower portion of the floor step and a floor step portion formed in a front portion of a rear wheel fender. The airframe structure of a riding type rice transplanter according to claim 1, wherein a rear support arm for supporting a rear portion of the getting on / off step is attached to a stay extending rearward so as to enter the floor step portion from the floor step.