JP3527072B2 - Airframe structure of riding rice transplanter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a riding type rice transplanter, more specifically, a mid-mount fertilizer specification in which a main part of a fertilizer application is arranged on a rear part of the airframe between a driver's seat and a seedling planting device. And, it is possible to change the specifications from the standard specifications without the fertilizer application.

[0002]

2. Description of the Related Art As a rice transplanter of the above-mentioned mid-mount fertilizer specification, in Japanese Patent Application No. 9-22447 filed previously, a fertilizer hopper, a feeding mechanism, and a blower for transferring fertilizer air are provided immediately after the driver's seat. Have been proposed.

[0003]

[Problems to be Solved by the Invention] With a mid-fertilizer-specific rice transplanter in which the main part of the fertilizer application device is located on the airframe immediately after the driver's seat, the space required for the mid-fertilizer application is smaller than that of a general rice transplanter. There is a tendency that the front-rear distance between the attachment device and the driver's seat, that is, the rear portion of the machine body becomes wider. For this reason, when using a mid-fertilizer type rice transplanter with the fertilizer application removed, the rear edge of the rear wheel fender, which is a scaffolding, and the seedling stand tend to be separated, and It was difficult to do seedling supply work. An object of the present invention, design changes in the mid-mount fertilization specifications and standard specifications Te capable rice transplanter odor, lies in improving the workability of the seedlings complement <br/> supply.

[0004]

[Means for Solving the Problems]

[Structure] The first invention is a fertilizer hopper and a fertilizer feeding mechanism arranged on the body between the front and rear of a seedling planting device connected to a rear part of the body so as to be able to move up and down and a driver's seat, and a seedling planting. A mid fertilizer specification equipped with a grooving device equipped with a device, and a fertilizer applying device which is provided with a feed pipe for guiding the fertilizer fed out from the feeding mechanism, and a standard fertilizer without a fertilizer applying device. specification change can be configured, the rear end of the rear wheel fender, with there constitute a rear extension step of projecting rearward from the rear end can be mounted, the rear extension step
The plant can be moved vertically and the seedling planting device
And then lower it, the rear extension step moves downward.
And, when the seedling planting device is raised with respect to the machine body,
As the rear extension step moves upward, the rear
The extension step and the link mechanism are interlockingly connected .

In a second aspect of the invention, in the first aspect of the invention , the upper surface of the extension step and the upper surface of the rear end of the fender are at substantially the same height level when the seedling planting apparatus is lowered with respect to the machine body. It is characterized by being done.

A third invention is the same as the first or second invention,
On the lateral side of the rear part of the fender, a lateral extension step that extends laterally beyond the fender is provided, and this lateral extension step is stored at a storage position where it enters below the rear part of the fender.
It is characterized in that it is configured so as to be movable over a projecting action position that projects laterally of the fender.

According to a fourth aspect of the invention , a link mechanism is provided at the rear of the machine body.
A rice-type rice transplanter with a planting device that can be moved up and down.
At the rear end of the rear wheel fender, projecting rearward from the rear end.
The rear extension step is
In addition, this rear extension step is configured to be movable up and down,
When the seedling planting device is lowered with respect to the machine, it extends backward
The step moves downward and the seedling planting device
And the rear extension step moves upward.
The rear extension step and the link mechanism to move.
It is characterized in that and are linked together.

[Operation] According to the configuration of claim 1, in the standard specification state, the rear extension step protruding rearward from the rear wheel fender can be mounted. A person can perform seedling replenishment work and inspection of seedling planting equipment while being placed on the backward extension step. That is, the work can be performed more easily than in a state where there is no rearward extension step in which the seedling replenishment work and the like must be performed in an unnatural posture with the waist broken. When using it as a mid-mount fertilizer specification, the rear extension step may be removed and a fertilizer application device may be installed instead. Further, the structure may be such that both the rear extension step and the fertilizer application device can be mounted.

Further, according to the constitution of claim 1 , there is the following action. That is, when the seedling planting device is set to a low position such as a planting work state, the rear end of the fender and the seedling mounting table are far from each other in the front-rear direction, but when the seedling planting device is lowered, the extension step is also performed. As the height of the extension step and the upper edge of the seedling mounting table becomes suitable for seedling replenishment work, the position on the machine where the worker is most rearward is set to an appropriate height interval with the seedling mounting table. However, you can approach the seedling stand in the front-back direction. And when the seedling planting device is raised, the extension step also goes up, so even in that case, the height of the extension step and the upper end of the seedling mounting table can be made suitable for seedling replenishment work, and the operator can move the rearmost position on the machine. It is possible to approach the seedling mounting table in the front-rear direction while keeping the position close to the seedling mounting table at an appropriate height interval from the seedling mounting table. That is, it is possible to improve workability regardless of the vertical position of the seedling planting device.

According to the second aspect of the present invention, when the seedling planting device is lowered with respect to the machine body, the upper surface of the extension step and the upper surface of the rear end of the fender can be substantially level with each other and have no step. Therefore, it is possible to eliminate the stepping error and the time and effort for the visual confirmation for preventing it, and the efficiency of the work using the extension step is improved.

According to the third aspect of the invention, since the lateral extension step is provided which projects laterally beyond the fender, the scaffolding area at the rear end of the fender increases, and at the same time, multi-sections such as 8 and 10 sections are provided. Even if the seedling mounting table is long for left and right for planting, it can move laterally outward and approach the left and right ends of the seedling mounting table, which facilitates seedling supply work. And since the lateral extension step can be stored by inserting it into the lower part of the fender, it is possible to prevent contact with the bank when traveling on the headland, contact with the garage, etc.
It becomes possible to make it easy to control.

According to the structure of claim 4, the following operation
There is. That is, when the seedling planting device is lowered,
Since the step is also lowered, the height of the extension step and the upper edge of the seedling stand is high.
Is suitable for seedling replenishment work.
The position where the seeds are closest to the rear is an appropriate height interval from the seedling stand.
You can get close to the seedling stand in the front-back direction.
And when raising the seedling planting device, the extension step is also up.
Therefore, even in that case, the extension step and the seedling table top edge
The height of can be made suitable for seedling replenishment work, and work on the machine
Set the position where the person can approach the rearmost position between the appropriate heights with the seedling table.
You can get close to the seedling stand in the front-back direction
It In other words, regardless of the vertical position of the planting device
In addition, the workability can be improved.

[Effect] In the riding type rice transplanter according to any one of claims 1 to 3 ,
(B) By adopting a detachable rear extension step, it is a rice transplanter with a mid-mount fertilizer specification, but on-machine work at the rear of the fender such as supplying seedlings to the seedling table when the standard specifications are used without using the fertilizer application. It became easier to perform, and an airframe structure that was easy to use and improved was obtained. In the airframe structure according to claims 1 to 3 , in addition to the effect (a), the rear extension step is moved up and down in synchronism with the elevation of the planting section, regardless of the height of the seedling planting device. There is an advantage that the workability on the machine on the extension step can be improved without the need.

[0014] In aircraft structure of claim 2, and an extension step with fender rear section as a flat state with no level difference, which improves the movement ease, can be advantageously strengthen the effect (i) is there.

In the airframe structure according to the third aspect , even if the seedling planting device for multi-row planting is excellent in on-machine workability such as seedling replenishment by the lateral extension step, it is laterally extended by storing it under the fender. The lateral extension of the steps can be suppressed or eliminated, and it can be made practical without impairing handleability such as garage entry.

A riding type rice transplanter according to a fourth aspect of the present invention is a rear extension machine.
Long steps can be moved up and down in synchronization with the raising and lowering of the planting section.
This enables the extension step to be performed regardless of the height of the seedling planting device.
There is an advantage that the workability on the machine on the table can be improved.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a seedling planting device 4, which is a planting part, is movably connected to the rear of a riding-type traveling machine body including a pair of left and right front wheels 1 and rear wheels 2 via a link mechanism 3. A rice planting machine with a mid-type fertilizer is configured by equipping the fertilizer applicator A at a position on the front side of the seedling planting device 4 and immediately after the driver's seat 67. Incidentally, 43 is a fertilizer stand for reducing the labor of supplying fertilizer to the fertilizer hopper 18.

In this rice transplanter, the power of the engine E mounted in the hood 5 of the traveling machine body is transmitted to the front wheels 1 via the front transmission case 6, and also 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 handle 10 of the boarding operation unit 9. Further, a PTO shaft 11 which is a planting system transmission shaft is extended rearward from the front transmission case 6, and the power is transmitted from the PTO shaft 11 to the seedling planting device 4 to travel in the field. However, it is structured so that seedling planting work can be performed.

The seedling planting device 4 is a hydraulic cylinder 1 for lifting and lowering.
With the expansion / contraction operation of 2, the lifting operation can be freely performed between the working position for planting the seedling, the lower end of which comes into contact with the field scene, and the rising position, which moves largely upward. Then, the seedling stand 14 that reciprocates laterally at a set pitch along the vehicle body lateral width direction with respect to the planting portion frame 13 connected and supported by the link mechanism 3,
A plurality of (six) planting mechanisms 15 for picking up seedlings one by one from the lower end of the seedling to be planted placed on the seedling stand 14 and planting them in the field, a grounding float for leveling the mud while grounding in the field It is configured in a 6-row planting format with 58 and the like.

The seedling placing portion of the seedling placing table 14 is provided with a vertical feeding device 16 for feeding the seedlings placed at the lateral movement stroke end toward the planting mechanism 15 by a set amount for each planting article. Has been. The vertical feed device 16 is configured such that a belt with protrusions is wound around a pair of upper and lower pulleys, and the lower pulley is rotated by a predetermined amount by abutting action at the stroke end.

Although not described in detail in the structure of the vertical feed device 16, there is provided a vertical feed clutch (not shown) which can be switched between a state where the vertical feed operation is performed for every two threads and a state where the operation is stopped. It is provided. In addition, the ground contact float 58 is a groove for admitting fertilizer onto the mud surface at a position adjacent to the planting site of the seedling in each planting section so as to enter the mud layer toward the lower side of the ground contact surface. A grooving device 17 is provided to form the groove.

Next, the fertilizer application device A will be described. Figure 2
As shown in FIG. 2, the fertilizer application apparatus A is a three-row integrated fertilizer hopper 18 for storing powdered and granular fertilizer, a feeding mechanism 19 for feeding a predetermined amount of fertilizer from the fertilizer hopper 18, and a fertilizer feeding apparatus for feeding the fed fertilizer. No. 4 fertilizer hose (an example of a downflow path) 21 sent to the grooving device 17. The feeding mechanism 19 includes a funnel portion 18 for each row of the fertilizer hopper 18.
Located below a, multiple (6) corresponding to each planting line
It is provided. The fertilizer fed from each feeding mechanism 19 is configured to be forcibly transferred to each groove making device 17 through the fertilizer application hose 21 by the blower 20 blowing air.

As shown in FIG. 3, the feeding mechanism 19 is fitted inside the casing 22 so as to be integrally rotatable with the feeding shaft 23 while facing the bottom opening portion of the fertilizer hopper 18, and at the outer peripheral portion. Is provided with a feeding rotor 25 in which a plurality of concave portions 24 for entering fertilizer are formed at a predetermined pitch, and the fertilizer stored in the concave portions 24 as the feeding rotor 25 rotates is shaped like a funnel on the lower side. The guide portion 26 is configured to be guided downward. A brush 27 for scraping off is provided so that a predetermined amount can be stored in the recess 24.

The brush 27 is swingable about the horizontal axis P between the working position located on the outer peripheral surface of the feeding rotary member 25 and the fertilizer discharging position separated from the feeding rotary member 25, and the casing 22. In accordance with the switching operation of the switching operation tool 31 provided on the outer side of the side, it is integrally rocked and held at each position.

Each casing 22 in each of the plurality of feeding mechanisms 19 is supported by a vertical frame 29 fixedly erected from the machine frame F, and fixedly supported by a horizontal frame 30 extending in the lateral direction of the vehicle body. Feeding shaft 2
Reference numeral 3 designates each of the feeding rotary members 2 for each of the pair of feeding 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 fed out.
It is configured such that it can be driven and stopped separately for each.

The drive 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 in a state in which the fertilizer application device A has a length substantially along the entire width direction along the lateral direction of the vehicle body and is rotatably supported at both end portions. A drive shaft 32 is arranged, and a one-way clutch 33 is provided at an intermediate portion of the drive shaft 32 in the lateral width direction. The operation arm 34 of the one-way clutch 33 and the bevel gear mechanism 2
A rotary arm 36 mounted on a lateral transmission shaft 35 which is rotationally driven by a PTO shaft 11 via 8 is pivotally connected by an interlocking rod 37, and the operation arm 34 swings as the rotary arm 36 rotates. With the one-way clutch 33, the drive shaft 32 is intermittently rotated only in a predetermined direction.

The drive shaft 32 and the three feeding shafts 2 are provided.
3 is configured so as to be interlocked with each other by the engagement of gears 39 and 40 attached to each of them, and both shafts 3
A fertilizer clutch 38 is provided between 2 and 23 so that the power can be turned on and off independently.

As shown in FIG. 2, a round tubular blower pipe 45 is arranged on the front side of the casing 22 with its longitudinal direction being along the lateral direction of the vehicle body, and support brackets 46 are provided at both ends. Is provided in a state of being 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 rearward of the machine body, and the fertilizer application hose 21 is inserted therein. An air supply unit 52 that connects the lower end outlet 50 and the inside of the blower pipe 45 is formed on the front side of the fertilizer supply unit 51. 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 extend in a substantially straight line along the direction. Further, below the lower end outlet 50, a discharge portion 54 for forming a discharge path 53 that connects the discharge outlet 48 and the inside of the discharge pipe 48 is formed.
The other end of the blower pipe 45 is usually closed by a lid 45a that can be opened and closed.

The feeding mechanism is provided with a path switching plate 55 which is switchable between a feeding action state in which the granular fertilizer fed from the feeding mechanism 19 is guided to the fertilizer application hose 21 and a discharging state in which it is guided to the discharging path 53. It is provided corresponding to each of the nineteen. The path switching plate 55 is pivotally 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. Is. The supply position is a position where the discharge path 53 is closed and the fertilizer supply section 51, that is, the fertilizer supply 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 section 51. Is a position where the discharge path 53 and the blower pipe 45 communicate with the lower end outlet 50.

A discharge pipe 48 for guiding and discharging the discharged fertilizer toward the front lower side of the machine is provided in each discharge unit 54 so as to be in communication with each discharge pipe 48.
As shown in Fig. 3, each of the three pipes on the left and right sides has one large-diameter merging conduit 4 at the lower side of the fertilizer guide direction.
The fertilizer is discharged from the common fertilizer discharge port 49 so that the fertilizer is discharged from the common fertilizer discharge port 49.

When fertilizing is carried out at the time of planting seedlings, the path switching plate 55 is switched to the supply position and the blower 20 is used.
Of the fertilizer fed out by a predetermined amount from the feeding mechanism 19 is fed from the lower end outlet 50 through the fertilizer supply part 51 and the fertilizer hose 21 toward the grooving device 17 to be supplied to the field. To do.

After the planting work is completed, the fertilizer hopper 1
When recovering the fertilizer remaining in 8, switch lever 56
To the discharging position, the brush 27 in the feeding mechanism 19 is switched to the fertilizer discharging position separated from the feeding rotary member 25 to discharge the fertilizer, and the blower 20 blows air to discharge the discharged fertilizer at the lower end outlet. After passing through the discharge route 53 and the discharge pipe 48 from 50, it is discharged from the fertilizer discharge port 49 to the outside. Therefore, the fertilizer can be collected by arranging the collection container or the like corresponding to the fertilizer discharge port 49.

As shown in FIG. 2, six gear-like gears that can be engaged with and disengaged from the gear-like rotation adjusters 70 that operate the feed-out amount adjusting mechanism (not shown) for each pay-out mechanism 19 are provided. The drive rotating body 71 is connected to a rotatable operation rod 72. By the sliding movement of the operating rod 72 in the left direction, each drive rotating body 71 and each rotation adjusting tool 70 are engaged, and by the sliding movement of the operating rod 72 in the right direction, each driving rotating body 71 and each rotation. The non-acting state in which the engagement with the adjusting tool 70 is released is configured to be able to appear. At the right end of the operation rod 72, a handle 75 for rotating operation is provided, and it acts on the drive shaft 32 to fix the payout shaft 23 when adjusting the payout amount of the total payout mechanism 19 by the handle 75. Switching lever 76
Is equipped with.

Next, the structure of the rear wheel fender B will be described. The rear extension step shown in FIGS.
85 and auxiliary step (horizontal extension step) 60 are the fuselage
It is attached and supported by a support pipe 61 fixed to the frame F.
Structure the steps of the invention the mounting serial to claim 1 to 3 since the are
It does not come. As shown in FIGS. 4, 6 and 7.
The fender B for the rear wheels is a mudguard section 4 for the left and right rear wheels 2 and 2.
1, 41 and a floor step portion 44 corresponding to the rear portion of the floor step 42, which is an integral member made of resin, and a driver's seat 67 is arranged at the center of the rear portion. The rear parts of the left and right mudguards 41, 41 are formed on a substantially horizontal footrest mounting surface 47 at a position that rises upward from the floor step 42 surface, and at the rear end of the footrest surface 47, A convex portion 56 protruding upward is formed.

That is, when the fender B is molded, the mounting surface 4
7. The rear end is raised to integrally form the convex portion 56, and has the function of restricting the foot behind the mounting surface 47 so that it is difficult to step off the foot, and the function of improving the strength of the mounting surface 47.
On the mounting surface 47, the non-slip material 5 is provided so that the feet are not slippery.
7 is attached.

Further, as shown in FIGS. 6 and 8, the fender B
Auxiliary steps (an example of a lateral extension step) 60 are provided on both the left and right lateral outsides of the mounting surface 47 of the support pipe 61 (an example of a supporting member) 61 which is a single long member supported by the body frame F. The left and right auxiliary steps 60, 60 are attached and supported at both ends, and the rear portion of the fender B is attached to the support pipe 61. The auxiliary step 60 includes a strip 60b, which is a plate member, and a rectangular frame 60a in a plan view.
And a plurality of left and right steel strips 60c are fixed and welded and fixed to the support pipe 61. Further, a connecting pipe 64 for connecting the front transmission case 6 and the rear transmission case 8 to reinforce the machine body frame F, and the horizontal steel strip 60 of the auxiliary step 60.
A reinforcing pipe 65 is provided so as to extend over the bracket 60A fixed to one of the c, and the strength of the auxiliary step 60 is improved.

The support pipe 61 is bolted to the upper portion of the machine 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 support pipe 6
It is bolted to one bracket 63, 63 in the front-back direction. The auxiliary step 60 is set to the same height level as the placing surface 47, and as shown in FIG. 8, the seedling receiver b such as a nursery box or a seedling scooping plate is provided on the placing surface 47 and the auxiliary step 60. It can be stably placed in a horizontal posture.

Further, the support pipe 61 is provided with a rear extension step 85 projecting rearward from the rear end of the fender B. That is, a rear extension step 85 including a stay 85a and a tread surface 85b bolted to the stay 85a is fixed to the rear surface side of the support pipe 61, and the tread surface 85b is almost the left and right ends of the left and right auxiliary steps 60, 60. It is formed as a wide one having the same left and right width. Then, a plurality of holes 85c for passing the fertilizer application hose 21 are formed,
It is arranged below the feeding mechanism 19 regardless of the presence or absence of the fertilizer application device A.

The tread surface 85b is set to a level slightly lower than the mounting surface 47 and is set to substantially the same height level. In the standard specification without the fertilizer application device A shown in FIG. 5, the mounting surface 47 of the fender and the auxiliary step 60 are set. , And rear extension step 8
It is made easy to use the three persons of No. 5 as scaffolds at the time of seedling supply work to the seedling mounting table 14. Further, even in the mid-mount fertilization specification in which the fertilizer application device A is mounted, the auxiliary step 60 and the rear extension step 85 can be left attached, and the trouble of removing them is omitted.

Next, the bonnet lateral extension step 68 will be described. As shown in FIGS. 9 to 11, front steps (also referred to as round steps) 73, 73 following the floor step 42 are provided on the left and right sides of the bonnet 5, and the lateral outer portions of the front steps 73, 73 are provided. An extension step 68, which extends laterally outward from its lateral outer edge, is detachably attached. The auxiliary seedling stand 66 is supported on the lateral outer side of the extension step 68, and the extension step 6
The reference numeral 8 is configured so that it can be seen through in a direction from the upper side to the lower side of the step.

That is, the extension step 68 is composed of a frame 74 formed by bending a plate material into a rectangle and a step surface 77 for placing a foot. By forming the step surface 77 with punching metal, the vertical direction It is possible to see through. The frame 74 is attached to the machine frame side member 78 below the front step 68 with the front and rear bolts 79, 79, and the two vertical columns 66a, 66a of the preliminary seedling stand 66 are placed inside the outer surface of the frame 74. By inserting and mounting and bolting the spare seedling mounting table 6 to the extension step 68.
6 is attached. Incidentally, 80 is a spare seedling stand, and 81 is a marker arm.

As shown in FIG. 9, the step outer edge line a formed by the floor step 42 and the front step 73 is formed in a tapered curved shape whose width is narrower toward the front, and the rear portion of the front wheel 1 is a floor step in plan view. It is hidden below 42 and the front part of the front wheel 1 barely extends beyond the front step 73. Extension step 73
Is located right above the front portion of the front wheel 1 that is laterally extending from the outer edge line a, but due to the large number of holes in the punching metal,
It is possible to see through the front end of the front wheel 1 from the control section.

Therefore, as shown in FIG.
When loading onto a truck bed using, the operator standing on the step floor 42 can see the front end position of the front wheel 1 through the extension step 73, and the left and right positions of the walk board 82 and the front wheel 1 are aligned. It is possible to visually confirm whether or not there is. Also, the step surface 7 of the extension step 68
Since 7 is a punching metal, mud or soil is unlikely to fall off and be deposited, so that an anti-slip action can be expected.

As shown in FIG. 6, the step 69 for getting on and off the floor step 42 is performed by the floor step portion 4 formed at the lower rear portion of the floor step 42 and the front portion of the fender B.
4 is provided as a U-shaped member facing upward in a side view in a state of straddling the lower side of 4. The floor step 42 is mounted so as to cover the floor frame portion 84 therebelow, and a front support arm 69f for supporting the front portion of the boarding / alighting step 69 is bolted to a part of the floor frame portion 84. is there.

The rear support arm 69r for supporting the rear portion of the boarding / alighting step 69 is bolted to a stay 83 extending rearward from the floor frame 84, and the stay 83 extends from the floor step 42 to the floor step portion 4a.
4 is provided so as to invade. That is, the boarding / alighting step 69 is supported only by the floor frame 84, and is independent of the fender B and its attachment / detachment means.

[ Embodiment of the Present Invention According to Claims ] As shown in FIG. 12, the rear extension step 85 is supported so as to be able to swing up and down at a fulcrum Y on the front portion, and the upper and lower lift links 3 a of the link mechanism 3 are supported. When the seedling planting device 4 is lowered with respect to the machine body, the rear extension step 85 moves downward, and the seedling planting device 4
The rear extension step 85 may be configured to move upward when is raised with respect to the airframe.

That is, in the planting work state in which the seedling planting device 4 is lowered, the tread surface 85b of the rear extension step 85 is substantially horizontal and is at the same level as the mounting surface 47 of the fender B. And the seedling planting device 4
In the traveling condition by moving up, the rear extension step 85
Turns about 90 degrees forward, and the bent portion 8 at the rear of the step
5d is set as a new tread. The raised tread 85d makes it easier to reach the seedling placing table 14 located above the normal planting work state, and the seedling replenishing work is easy even when the seedling planting apparatus 4 is in the raised state. .

As shown in FIG. 13 and FIG. 14, the lateral extension step 60 extends over the storage position where the lateral extension step 60 is inserted below the rear portion of the fender B and the projecting action position which projects laterally of the fender B. It may be movable. That is, a rail member 87 that supports the support member 86 of the lateral extension step 60 so as to be slidable to the left and right is provided below the rear portion of the fender B, and can be pulled laterally to operate in the projecting action position, and when pushed in, it is in the storage position. It can be operated.

As shown in FIG. 15 and FIG.
In the lateral extension step 60 capable of moving in and out in the lateral direction shown in FIG. 5, the pipe-made supporting member 86 is fitted in the tubular member 88 on the machine side so as to be slidable, and the lateral extension step 60 is arranged in the projecting working position. It is also possible to adopt a structure in which the winding spring 89 for urging the cylinder is provided inside the tubular member 88. According to this, the lateral extension step 60 is normally in the projecting action position, and when the lateral extension step 60 comes into contact with the slope of the ridge or the wall of the garage from the lateral side, the lateral extension step 60 can be moved in the storage direction, and the lateral extension step 60 is damaged. And functions as a guard member at the rear of the fender B.

In order to change the standard specifications with the rear extension step 85 to the mid-mount fertilizer application, the rear extension step 85 may be removed and replaced with the fertilizer application device A.

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter

[Figure 2] Rear view of fertilizer application

[Fig.3] Vertical side view of the fertilizer supply section

[Figure 4] Overall plan view of rice transplanter

FIG. 5 is a side view showing the rear part of the rice transplanter of the standard specification without the fertilizer application device.

FIG. 6 is a side view showing a fender and various steps.

FIG. 7 is a sectional view showing the shape of the rear part of the fender.

FIG. 8 is a plan view showing a rear extension step and a horizontal extension step.

FIG. 9 is a plan view showing extension steps.

FIG. 10 is a side view showing a front wheel confirmation state during work on the step board.

FIG. 11 is a front view showing a mounting structure for an extension step.

FIG. 12 is a side view showing another structure of the rear extension step.

FIG. 13 is a plan view showing another mounting structure of the lateral extension step.

FIG. 14 is a side view of the lateral extension step shown in FIG.

FIG. 15 is a plan view showing another different mounting structure of the lateral extension step.

16 is a side view of the lateral extension step shown in FIG.

[Explanation of symbols]

3 link mechanism 4 Seedling planting equipment 17 Groover 18 fertilizer hopper 19 Feeding mechanism 21 Supply pipeline 60 horizontal extension steps 67 Driver's seat 85 Rear extension step A fertilizer application B Fender

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-244305 (JP, A) JP-A-6-253623 (JP, A) Actual development Sho 62-16050 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) A01C 11/00-11/02 A01C 15/00 B62D 25 / 22,49 / 00

Claims (4)

(57) [Claims] 1. A fertilizer hopper, a fertilizer feeding mechanism, and a fertilizer feeding mechanism arranged on the fuselage between a driver's seat and a seedling planting device connected to the rear of the fuselage via a link mechanism so as to move up and down. A mid-grower fertilizer specification equipped with a groover equipped with the fertilizer, and a fertilizer application device provided with a feed pipe for guiding the fertilizer fed from the feeding mechanism, and a standard specification without the fertilizer feeder. The specification can be changed, and a rear extension step protruding rearward from the rear end can be attached to the rear end of the rear wheel fender .
This rear extension step is configured to move up and down,
When the planting device is lowered relative to the machine, the rear extension
Of the seedling planting device to the airframe.
And raise it to move the rear extension step upward.
So that the rear extension step and the link mechanism are
The structure of a passenger rice transplanter that is linked and linked . In a state in which wherein said seedling planting apparatus is lowered relative to the fuselage, the claims and the extension step top surface, a top surface of the fender rear end portion are configured to be substantially the same height level The body structure of the riding type rice transplanter according to 1 . 3. A lateral extension step extending laterally beyond the fender is provided on the lateral side of the rear portion of the fender, and the lateral extension step is a storage position in which the lateral extension step is inserted below the rear portion of the fender. The airframe structure of the riding-type rice transplanter according to claim 1 or 2 , wherein the fender is configured to be movable across a laterally projecting position of the fender. 4. A device for attaching seedlings to the rear of the machine body via a link mechanism.
In a riding-type rice transplanter in which the equipment is vertically movable, the rear end of a rear wheel fender projects rearward from the rear end.
It is configured so that a rear extension step can be installed,
This rear extension step is configured to move up and down,
When the planting device is lowered relative to the machine, the rear extension
Of the seedling planting device to the airframe.
And raise it to move the rear extension step upward.
So that the rear extension step and the link mechanism are
The structure of a passenger rice transplanter that is linked and linked .