JP2024008650A - Sulky seedling planting machine - Google Patents

Abstract

To address such a problem that conventionally, some type of the sulky seedling planting machine for planting seedlings while traveling in a paddy field, includes a GPS antenna on a reserve seedling frame provided on left/right of a front part of a traveling vehicle body, however, the sulky seedling planting machine includes the GPS antenna on the reserve seedling frame extending high toward the upper side of a machine body including multistage reserve seedling trays or seedling box rails whose position can be changed freely between a folded state and a horizontal state, accordingly, the reserve seedling frame protrudes upward, and there is a problem in a storage property of the machine body; and to provide a sulky seedling planting machine having a high storage property.SOLUTION: A sulky seedling planting machine is equipped with a seedling planting part 30 including seedling trays 31 on a rear part of a traveling car body 2 and includes a GPS antenna 50 on an upper side of an antenna support frame 40 provided at a center of the left and right of the traveling car body 2, The antenna support frame 40 is configured to freely change an attitude into a substantially upright standing state (a) and a lying state (b).SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a riding-type seedling planting machine having a seedling planting section mounted on a traveling vehicle body.

BACKGROUND ART Conventionally, in a riding-type seedling planting machine that plants seedlings while traveling in a paddy field, there is one in which a GPS antenna is provided on a spare seedling frame provided on the left and right sides of the front part of the traveling vehicle body (see Patent Document 1).

JP2019-076116A

The riding-type seedling transplanter is equipped with a GPS antenna on a spare seedling frame that extends high above the machine, which is equipped with a multi-stage spare seedling stand and a seedling box rail that can change its position between folded and horizontal positions. There was a problem with the ability to store the aircraft as the seedling frame remained protruding upwards.

The present invention has been made in view of the above, and an object of the present invention is to provide a riding-type seedling transplanter with good storage properties.

In the invention as claimed in claim 1, a seedling planting section 30 equipped with a seedling mounting table 31 is attached to the rear of the traveling vehicle body 2, and a GPS is mounted on the upper part of an antenna support frame 40 provided at the left and right center position of the front end of the traveling vehicle body 2. This riding-type seedling-planting machine is equipped with an antenna 50, in which the antenna support frame 40 can be freely changed between an upright state (a) and a laid-down state (b).

According to the invention described in claim 1, since the antenna support frame 40 is provided so as to be able to change its posture between the substantially upright standing state (a) and the lying state (b), the antenna supporting frame 40 can be placed in the substantially upright standing state (b). ) so that the GPS antenna 50 is located at a high position on the aircraft body, the satellite positioning system can be operated appropriately to perform work or drive on the road.

Moreover, if the antenna support frame 40 is laid down (b), the height of the machine becomes low and it can be stored in a low shed or the like, providing good storage performance.

In the invention according to claim 2, the antenna support frame 40 is constituted by parallel left and right vertical frames 41L and 41R, and a rotation support frame 43 in which a base for changing the attitude of the left and right vertical frames 41L and 41R is pivotally supported on the aircraft body. When the antenna support frame 40 is laid down horizontally (b), the left and right vertical frames 41L and 41R extend from the front to the rear of the vehicle body 2, and a seedling box N is placed on top of the left and right vertical frames (41L, 41R). 2. The riding-type seedling transplanter according to claim 1, which is configured to be able to be mounted and slidably moved in the front and rear directions.

According to the invention set forth in claim 2, in addition to the effects of the invention set forth in claim 1, the antenna support frame 40 is configured to have parallel left and right vertical frames 41L, 41R and a base for changing the posture of the left and right vertical frames 41L, 41R. It is composed of a rotation support frame 43 pivotally supported by the vehicle body, and when the antenna support frame 40 is laid down horizontally (b), the left and right vertical frames 41L and 41R extend from the front to the rear of the vehicle body 2, and Since the seedling box N is placed on the upper part and configured to be slidable in the front and rear directions, if the antenna support frame 40 is changed to the horizontally laid down state (b), the left and right vertical frames 41L, which are located at the center of the left and right sides of the aircraft, can be moved. 41R doubles as a seedling box rail, and by attaching the front part of the traveling vehicle body 2 to the ridge or road in the field, a worker on the ridge or road can easily place the seedling box N on the front of the left and right vertical frames 41L and 41R. The seedling box N placed on the left and right vertical frames 41L and 41R can be placed and fed from the road, and the worker on the machine slides the seedling box N placed on the left and right vertical frames 41L, 41R backwards and places it on the seedling mounting table 31 of the seedling planting section 30 at the rear of the machine. It can be supplied efficiently and easily.

In addition, since the antenna support frame 40 is located at the left and right center of the traveling vehicle body 2, when the antenna support frame 40 is changed to a horizontally laid down state (b), the left and right vertical frames 41L and 41R, which also serve as seedling box rails, It is located at the left and right center of the seedling mounting table 31 of the seedling planting section 30, and can easily supply seedlings to each seedling mounting surface of the seedling mounting table 31 with good workability.

The invention according to claim 3 is the riding type seedling planting according to claim 2, wherein the inclination angles of the left and right vertical frames 41L, 41R are configured to be freely changeable when the antenna support frame 40 is in a horizontally laid down state (b). It is a machine.

The invention according to claim 4 is the riding type seedling planting machine according to claim 2 or 3, in which the GPS antenna 50 is fixed in a state protruding forward from the upper ends of the left and right vertical frames 41L, 41R.

According to the invention set forth in claim 4, the GPS antenna 50 is fixed in a state protruding forward from the upper ends of the left and right vertical frames 41L, 41R, so that the lower surface of the GPS antenna 50 faces forward over the left and right vertical frames 41L, 41R. It functions as a stopper for the seedling box N that has slid, and can appropriately restrict the movement of the seedling box N and stop it at the front position of the left and right vertical frames 41L, 41R.

The invention according to claim 5 is any one of claims 1 to 3, wherein the distance D between the left and right vertical frames 41L and 41R is wider than the left and right widths of the steering handle 9 and the cockpit 8 provided at the left and right center portions of the aircraft. This is a riding-type seedling planting machine according to item 1.

According to the invention set forth in claim 5, the distance D between the left and right vertical frames 41L and 41R is set wider than the left and right widths of the steering handle 9 and the cockpit 8 provided in the left and right center portions of the aircraft body, so that the antenna support frame 40 can be laid down. Even if the posture is changed to state (B), the operator can still operate the aircraft by sitting in the pilot seat 8 within the distance D between the left and right vertical frames 41L and 41R and operating the steering handle 9.

The invention according to claim 6 is the riding-type seedling planting machine according to claim 4, wherein the distance between the left and right vertical frames 41L, 41R is wider than the left and right widths of the steering handle 9 and the cockpit 8, which are provided in the left and right center portions of the machine body. It is.

FIG. 2 is a side view for explaining the operation of the riding rice transplanter according to the embodiment of the present invention. FIG. 2 is a plan view for explaining the operation of the riding rice transplanter. FIG. 2 is a perspective view of the main parts of the riding rice transplanter. It is a perspective view of the same main part. FIG. 7 is a side view for explaining the operation of the second embodiment of the present invention. It is a perspective view for operation explanation showing the same 2nd embodiment. It is a side view for operation explanation showing the same 2nd embodiment. (A) and (B) are perspective views showing another embodiment of the top cover and front cover of the present invention. FIG. 7 is a side view for explaining the operation of the third embodiment of the present invention. It is a perspective view for operation explanation showing the same 3rd embodiment. FIG. 7 is a side view for explaining the operation of the fourth embodiment of the present invention. FIG. 7 is a perspective view for explaining the operation of the fourth embodiment. FIG. 7 is a plan view for explaining the operation of the fourth embodiment. It is a side view for operation explanation showing the 4th embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a riding-type rice transplanter, which is an embodiment of the riding-type seedling transplanter disclosed in the present application, will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments described below.

<Overall configuration>
As shown in FIGS. 1 and 2, the riding rice transplanter 1 includes a traveling vehicle body 2 that can travel in a paddy field. The traveling vehicle body 2 includes a pair of left and right front wheels 3 and a pair of left and right rear wheels 4. Note that the traveling vehicle body 2 is a four-wheel drive vehicle in which front wheels 3 and rear wheels 4 are driven.

A seedling planting section 30 that is driven up and down by a lifting device is attached to the rear part of the traveling vehicle body 2.

A GPS antenna 50 is provided on the top of an antenna support frame 40 provided at the center of the front end of the vehicle body 2 .

<Running vehicle body 2>
The traveling vehicle body 2 includes a body frame, an engine E provided on the body frame, and a power transmission device that transmits the power generated by the engine E to the front and rear wheels 3 and 4 and the seedling planting section 30. That is, the power generated by the engine E, which is the power source, is used not only to move the traveling vehicle body 2 forward or backward, but also to drive the seedling planting section 30.

The engine E is mounted on the front part of the traveling vehicle body 2. Note that as the engine E, a heat engine such as a diesel engine or a gasoline engine is used.

The upper part of the engine E is covered by a bonnet 6. Floor steps 7 are provided on both left and right sides of the bonnet 6 and at the rear.

The floor step 7 is mounted on the fuselage frame. For example, a part of the floor step 7 near a pilot's seat 8, which will be described later, is formed in a lattice shape in plan view so that mud and the like adhering to the shoes of workers can be dropped onto the paddy field.

The rear central portion of the floor step 7 is formed in a convex shape, and a pilot's seat 8 is provided on the upper surface thereof.

At the rear end of the floor step 7, a rear step 7R is provided which also serves as a fender for the rear wheel 4, which is configured high.

The power transmission device includes a belt-type power transmission unit that transmits power from the engine E, and a hydrostatic continuously variable transmission that is a transmission that changes the speed of the power transmitted from the engine E through the belt-type power transmission unit. , and a mission case.

The hydrostatic continuously variable transmission can change the output (rotational speed) and the output direction (rotational direction) by operating a main shift lever provided on the operation panel section at the rear of the upper end of the bonnet 6. That is, the hydrostatic continuously variable transmission can change the forward and backward movement and running speed of the traveling vehicle body 2 by changing the rotational speed and rotational direction.

The transmission case is provided with a transmission device that transmits power from the engine E whose speed has been changed by a hydrostatic continuously variable transmission to various parts. The transmission case is equipped with an auxiliary transmission mechanism that changes the traveling speed when driving or working. When the sub-shift lever provided on the operation panel at the rear of the upper end of the bonnet 6 is operated, the transmission case changes the traveling speed of the traveling vehicle body 2 to a seedling planting speed during planting work and a seedling planting speed higher than the seedling planting speed. Switch to road speed.

The traveling vehicle body 2 includes a driver's seat 8 on a floor step 7. The pilot's seat 8 is a seat where an operator sits when operating the vehicle. The traveling vehicle body 2 includes a steering handle 9, a planting lever, etc. in front of a driver's seat 8.

The steering handle 9 is provided at a rear center position above the bonnet 6 of the vehicle body 2, and when rotated by an operator, the left and right front wheels 3 are steered to steer the vehicle body 2.

The traveling vehicle body 2 includes a planting lever on the operation panel portion. The planting lever is a lever that is operated to raise and lower the seedling planting section 30 or to start and stop planting of seedlings by the seedling planting section 30.

The traveling vehicle body 2 also includes a main shift lever and a sub shift lever. The main speed change lever is a lever that is operated when changing the speed of the hydrostatic continuously variable transmission to change the forward and backward movement of the traveling vehicle body 2 and the traveling speed. The sub-shift lever is a lever that is operated when changing the traveling speed of the traveling vehicle body 2 to a speed corresponding to the place where the vehicle is traveling (paddy field or road).

Further, the bonnet 6 is provided at the front of the vehicle body 2 to protrude upward from the left and right center portions of the floor step 7, and has the engine E mounted therein as described above.

An operation panel section is provided at the top of the bonnet 6. The operation panel section has a display surface tilted backward so as to face the operator seated in the pilot's seat 8 facing forward.

The operation panel section includes, for example, a marker sensor that detects when delineation markers (described later) that form a traveling reference line that serves as a guide for straight forward movement in a rice field scene is displayed on the left and right sides of the vehicle body, and the operation position of the planting lever. Displays information from various sensors such as the planting lever position sensor that detects

The riding rice transplanter 1 includes a lifting device and a seedling planting section 30. The lifting device includes a lifting link. The elevating link is a parallel link that connects the rear part of the traveling vehicle body 2 and the seedling planting section 30, and is freely rotatable in the vertical direction with respect to the link frame at the rear of the traveling vehicle body 2 and the seedling planting section 30, respectively. By being connected to, the seedling planting part 30 is connected to the traveling vehicle body 2 so as to be movable up and down.

Further, the elevating device includes a hydraulic elevating cylinder. The lifting cylinder expands and contracts when the planting lever is operated and the hydraulic valve is switched. The elevating cylinder moves the elevating link by expanding and contracting, thereby elevating the seedling planting section 30. That is, when the planting lever is operated, the elevating cylinder is switched to a non-working position where the seedling planting section 30 is raised, and a ground working position (planting position) where the seedling planting section 30 is lowered.

<Seedling planting section 30>
As described above, the seedling planting section 30 is attached to the rear part of the traveling vehicle body 2 via the elevating link. The seedling planting section 30 can, for example, plant seedlings in a plurality of rows (rows). The seedling planting section 30 includes a seedling mounting table 31, a float 32, and a planting device.

The seedling mounting table 31 has six seedling mounting surfaces corresponding to the number of planting rows in the left-right direction of the machine body. Each seedling mounting surface is a rear-sloping inclined surface on which a plurality of mat-like soiled seedlings can be placed in the vertical direction. The float 32 levels the ground while sliding on the muddy surface of the paddy field as the traveling vehicle body 2 moves. The float 32 includes a center float arranged at the center of the fuselage in the left-right direction of the fuselage, and side floats arranged outside in the left-right direction across the center float.

The float 32 (center float and side float) is attached to the traveling vehicle body 2 so that its rear part can rotate freely so that the front part moves up and down according to the unevenness of the rice field, and the float 32 responds to the up and down movement of the front part of the center float. Detected by a rotation sensor for angle control. In the seedling planting section 30, the vertical movement of the front part of the center float is detected by the rotation sensor during the planting work, and the hydraulic valve is controlled by the control section to control the expansion and contraction operation of the lifting cylinder according to the detection result of the rotation sensor. The seedling planting section 30 can be raised and lowered by switching to automatically adjust the planting depth of the seedlings.

The planting device is supported by the planting support frame of the seedling table 31 and is disposed below the seedling table 31. The planting device plants the seedlings with mat-like soil placed on the seedling mounting table 31 in the paddy field. The planting device includes a planting rod and a rotary case. The planting rod takes one seedling from the matted seedlings placed on the seedling table 31 and plants it in the paddy field.

<Antenna support frame>
As described above, the GPS antenna 50 is provided above the antenna support frame 40 provided at the center of the front end of the vehicle body 2 .

As shown in FIGS. 1 to 3, the antenna support frame 40 connects the upper ends of parallel left and right vertical frames 41L and 41R extending from the lower position of the floor step 7 to the upper position of the aircraft body with an upper horizontal frame 42, and are connected by a gate-shaped rotation support frame 43.

A GPS antenna 50 is fixed to the upper horizontal frame 42 of the antenna support frame 40 so as to protrude forward from the upper ends of the left and right vertical frames 41L, 41R.

The rotation support frame 43 of the antenna support frame 40 is configured such that its left and right bases are rotatably supported on the left and right side surfaces of the bonnet 6 by left and right pivot shafts 43a, and the rotation can be fixed at a predetermined position by a fixing mechanism. ing.

L-shaped rail members 44L, 44R are provided on the left and right vertical frames 41L, 41R of the antenna support frame 40, and a seedling box N is placed horizontally on the rail members 44L, 44R so as to be slidable. (The drawings are schematically shown). That is, the left and right vertical frames 41L and 41R of the antenna support frame 40 also serve as seedling box rails.

Therefore, the antenna support frame 40 can freely change its posture between a substantially upright standing state (a) and a horizontally laid down state (b).

The distance D between the left and right vertical frames 41L and 41R of the antenna support frame 40 is set wider than the left-right width of the bonnet 6, the left-right width of the steering handle 9, and the left-right width of the pilot's seat 8.

Therefore, even if the antenna support frame 40 is changed to a horizontally laid down state (b), the operator cannot operate the steering handle 9 while sitting in the cockpit 8 within the distance D between the left and right vertical frames 41L and 41R. Can control the aircraft.

Furthermore, when the antenna support frame 40 is changed to a horizontally laid down state (b), the fixing mechanism of the rotation support frame 43 allows the antenna support frame 40 to be rotated at predetermined angles in the horizontal state, the forward tilted state, and the rearward tilted state. Can be fixed.

In summary, by fixing the antenna support frame 40 in a substantially upright standing position (A) and placing the GPS antenna 50 at a high position on the aircraft, the satellite positioning system can be operated appropriately and the satellite positioning system can be operated while working or driving on the road. It can be carried out.

In addition, when the antenna support frame 40 is changed to a horizontally laid down state (b), the left and right vertical frames 41L and 41R located at the left and right center positions of the machine also serve as seedling box rails, and the front part of the traveling vehicle body 2 can be moved in the field. By attaching it to a ridge or road, a worker on the ridge or road can easily place and feed a seedling box N to the front of the left and right vertical frames 41L, 41R from the ridge or road, and a worker on the machine can easily place and supply the seedling box N to the front of the left and right vertical frames 41L, 41R. , 41R can be slid rearward and efficiently and easily supplied to the seedling mounting table 31 of the seedling planting section 30 at the rear of the machine.

In addition, since the antenna support frame 40 is located at the left and right center of the traveling vehicle body 2, when the antenna support frame 40 is changed to a horizontally laid down state (b), the left and right vertical frames 41L and 41R, which also serve as seedling box rails, It is located at the left and right center of the seedling mounting table 31 of the seedling planting section 30, and can easily supply seedlings to the six seedling mounting surfaces of the seedling mounting table 31 with good workability.

Furthermore, when the antenna support frame 40 is changed to a horizontally laid down state (b), the fixing mechanism of the rotation support frame 43 allows the antenna support frame 40 to be rotated at predetermined angles in the horizontal state, the forward tilted state, and the rearward tilted state. Since it can be fixed, the left and right vertical frames 41L and 41R, which also serve as seedling box rails, can be fixed in a horizontal state, a front upwardly inclined state, and a rearward upwardly inclined state.

Therefore, for example, a worker who is on a ridge or road places a seedling box N on the front of the left and right vertical frames 41L, 41R from the ridge or road, and then removes the seedling box N placed on the left and right vertical frames 41L, 41R. When sliding the seedlings rearward and feeding them to the seedling mounting table 31 of the seedling planting section 30 at the rear of the machine, the left and right vertical frames 41L and 41R, which also serve as seedling box rails, can be fixed in an upwardly tilted state. Since the seedling box N placed on the front of the left and right vertical frames 41L and 41R slides backwards due to its own weight, the operator on the machine must be at the rear end of the left and right vertical frames 41L and 41R to catch the seedlings that have been slid. It is sufficient to supply the box N to the seedling mounting table 31, and the workability is good.

At this time, the GPS antenna 50 is fixed in a state protruding forward from the upper ends of the left and right vertical frames 41L and 41R, so the lower surface of the GPS antenna 50 faces forward over the left and right vertical frames 41L and 41R, which also serve as seedling box rails. It functions as a stopper for the seedling box N that has been slidingly moved, and can appropriately restrict the movement of the seedling box N and stop it at the front position of the left and right vertical frames 41L and 41R which also serve as seedling box rails.

In addition, if the left and right vertical frames 41L and 41R, which also serve as seedling box rails, are fixed in an upwardly tilted state, the empty seedling box N after feeding seedlings to the seedling table 31 can also be used as seedling box rails. If placed on the rear ends of the left and right vertical frames 41L and 41R, the seedling box N will slide forward under its own weight, and a worker on a ridge or road can slide the seedling box to the front of the left and right vertical frames 41L and 41R. N can be taken out of the aircraft and easily collected on ridges or roads.

Further, even if the machine body is stopped tilted forward and backward in the field, the left and right vertical frames 41L and 41R, which also serve as seedling box rails, can be adjusted and fixed in a horizontal state by the fixing mechanism of the rotary support frame 43.

When storing the riding rice transplanter 1 in a barn or the like, the antenna support frame 40 can be placed in a horizontally laid down state (b) to lower the height of the machine, allowing it to be stored in a low barn or the like.

Further, as shown in FIG. 4, the antenna support frame 40 is laid down horizontally (b), and the mounting plates 55 are placed side by side on the left and right vertical frames 41L, 41R, and covered with a storage cover 60 from above.

Therefore, the antenna support frame 40 functions as a support stay for the storage cover 60, and the storage cover 60 can neatly cover the bonnet 6, steering handle 9, and cockpit 8.

Further, the top of the storage cover 60 that covers the antenna support frame 40 serves as a mounting table and can be used as a storeroom. In addition, since the floor step 7 can also be used as a storeroom, it can be used as a two-tiered storeroom.

<Another embodiment>

(1) FIGS. 5 to 7 show a second embodiment of the antenna support frame 40.

That is, the upper cover 6a and front cover 6b of the bonnet 6 are provided on the left and right vertical frames 41L, 41R of the antenna support frame 40 so as to be slidable and fixed at predetermined positions.

Therefore, as shown in FIGS. 5 and 6, the antenna support frame 40 is fixed in a substantially upright state (A), and the upper cover 6a and front cover 6b are extended to the lowest ends of the left and right vertical frames 41L and 41R. When slid and fixed, the upper cover 6a and the front cover 6b are integrated with other covers of the bonnet 6, forming the bonnet 6 during normal operation.

During maintenance, when the upper cover 6a and the front cover 6b are moved upward along the left and right vertical frames 41L and 41R and fixed, the upper and front parts of the bonnet 6 are fully opened, and the operator's hands and body are protected from the bonnet. It is easy to get close to the inside of 6 and maintenance can be easily performed.

Further, as shown in FIG. 7, the antenna support frame 40 is changed to a horizontally laid down state (b) and fixed, and the upper cover 6a and front cover 6b are slid along the left and right vertical frames 41L and 41R. Then, the front cover 6b becomes a mounting surface, and the seedling box N, fertilizer, and other seedling-raising materials can be placed on the front cover 6b and easily moved from the front of the machine to the rear, reducing work effort. I can figure it out.

8(A) and (B) show another embodiment of the upper cover 6a and the front cover 6b, in which the upper cover 6a and the front cover 6b are rotatably connected at the joint 6c', and the upper cover 6a and the front cover 6b are rotatably connected. The posture can be freely changed between a bonnet shape state A in which the front cover 6a and the front cover 6b are bent and connected to each other, and a coplanar state B in which the upper surfaces of the upper cover 6a and the front cover 6b are on the same plane.

Further, when the headlight 6d is provided in the front part of the upper cover 6a and the attitude is changed to the same plane state B in which the upper surfaces of the upper cover 6a and the front cover 6b are on the same plane, the headlight 6d is placed on the inside of the same plane. The structure is such that it is hidden.

Therefore, the attitude of the antenna support frame 40 is changed to a horizontally laid down state (B) and fixed, and the attitude is changed to a coplanar state B in which the upper surfaces of the upper cover 6a and the front cover 6b are on the same plane, and the upper cover 6a is fixed. When the front cover 6b is slid along the left and right vertical frames 41L and 41R, the upper surfaces of the upper cover 6a and the front cover 6b become a wide mounting surface on which many seedling boxes N, fertilizers, and other seedling-raising materials can be placed. It can be easily moved from the front of the aircraft to the rear, reducing work effort.

Furthermore, since the upper cover 6a does not protrude downward from the antenna support frame 40, even if the vertical position of the antenna support frame 40 is set to be lower when changing the attitude of the antenna support frame 40 to the horizontally laid down state (b), the steering handle 9 and the cockpit 8. Therefore, when changing the attitude of the antenna support frame 40 to the horizontally laid down state (b), the vertical position is set to be lower, thereby further reducing the work effort.

Further, when the headlight 6d is provided in the front part of the upper cover 6a and the attitude is changed to the same plane state B in which the upper surfaces of the upper cover 6a and the front cover 6b are on the same plane, the headlight 6d is placed on the inside of the same plane. Therefore, the headlight 6d will not be damaged even if seedling boxes N, fertilizer, and other seedling-raising materials are placed on the upper surfaces of the upper cover 6a and the front cover 6b.

(2) FIG. 9 shows a third embodiment of the antenna support frame 40.

That is, the upper cover 6a and front cover 6b of the bonnet 6 are fixed to the lower portions of the left and right vertical frames 41L and 41R of the antenna support frame 40.

Therefore, when the antenna support frame 40 is fixed in the substantially upright standing state (A), the upper cover 6a and the front cover 6b are integrated with the left and right side covers 6c of the bonnet 6, and the bonnet 6 becomes the bonnet 6 during normal work. .

During maintenance, when the antenna support frame 40 is fixed in a horizontally laid down state (b), the upper cover 6a and the front cover 6b rotate upward together with the left and right vertical frames 41L and 41R, and open to the top of the bonnet 6. The front part is fully opened, allowing the worker's hands and body to easily approach the inside of the bonnet 6, making maintenance easier.

Further, the left and right side covers 6c are rotatably supported by left and right pivot shafts 43a, and configured to be freely connected and disconnected from the upper cover 6a and the front cover 6b.

Therefore, if the left and right side covers 6c are connected to the top cover 6a and the front cover 6b, as shown in FIG. The front cover 6b and left and right side covers 6c rotate upward together with the left and right vertical frames 41L and 41R to open, completely opening the top, front, left and right sides of the bonnet 6, and further protecting the hands and body of the worker. It is easy to get close to the inside of the bonnet 6 and maintenance can be easily performed.

Moreover, if the left and right side covers 6c are disconnected from the top cover 6a and the front cover 6b, and the antenna support frame 40 is fixed in a horizontally laid down state (b) during maintenance, the top cover 6a and the front cover Only 6b rotates upward together with the left and right vertical frames 41L and 41R and opens, thereby opening the upper and front portions of the bonnet 6.

(3) FIGS. 11 to 14 show a fourth embodiment in which a seedling rail 70 that is long in the left-right direction of the vehicle body is provided on the rear part of the traveling vehicle body 2.

That is, the seedling rail 70 is composed of a pair of front rails 71 and rear rails 72, and with the front rails 71 and rear rails 72 facing each other, the seedlings can be scooped out from the seedling box N or the seedling box N using a seedling saving plate. The seedling saving board on which the seedlings are placed can be placed in a long state in the front-rear direction, and the placed seedling box N or the seedling saving board can be slid in the left-right direction of the machine on the seedling rail 70.

In particular, the front rail 71 is divided into left and right rails 71a and a center rail 71b.

The left and right rails 71a are arranged opposite to the rear rail 72 and are fixed to the aircraft body.

The center rail 71b has a left-right length slightly longer than the left-right width of the pilot seat 8, and is pivoted to the aircraft body by a pivot shaft 75.

More specifically, the pilot seat 8 is fixed to a pivot shaft 75 rotatably provided on the aircraft body, and left and right support rods are arranged at the rear of the backrest of the pilot seat 8 and have their bases fixed to the pivot shaft 75. A central rail 71b is fixed to the tip of 76.

Therefore, the center rail 71b and the driver's seat 8 rotate together around the pivot shaft 75, and the center rail 71b is in the upper rear position with the driver's seat 8 ready for seating (the state shown in FIGS. 11 to 13). When the cockpit 8 is in a stowed state with its backrest facing downward, the central rail 71b is configured to be switchable and fixed in a state in which it is aligned with the left and right rails 71a and faces the rear rail 72 (the state shown in FIG. 14).

Further, the left and right center portions of the rear step 7R are recessed portions 7a that are lowered one step.

The horizontal width of the recessed portion 7a is wider than the horizontal width of the pilot's seat 8, and the recess is such that the backrest does not touch when the pilot's seat 8 rotates around the pivot shaft 75.

Therefore, since the recess 7a is provided in the left and right center of the rear step 7R, when the cockpit 8 rotates around the pivot shaft 75, the seedling rail 70 can be moved to a relatively low position without interfering with the rear step 7R. The seedling box N or seedling saving plate can be placed in the seedling rail 70 at a certain position, and the seedling box N or seedling saving plate can be placed on the seedling rail 70 to be fed to the seedling tray 31 of the seedling planting section 30. The seedling supply work can be performed easily and with good workability.

Further, the central rail 71b and the pivot shaft 75 of the pilot's seat 8 are arranged at an intermediate position between the front rail 71 and the rear rail 72 when viewed from the side, that is, at a position where the pilot's seat 8 enters into the seedling rail 70. Compared to a configuration in which the seedling rail 70 is provided behind the cockpit 8, the length of the machine body can be shortened, and running performance and work performance in the field are improved.

Further, a fuel tank 80 is disposed below the recess 7a in the left and right center portions of the rear step 7R, and a fuel supply port 80a is provided at the front of the recess 7a.

Therefore, the fuel tank 80 can be placed at a lower position in the aircraft body, lowering the center of gravity of the aircraft, and driving performance is improved.

In addition, since the fuel supply port 80a is provided at the front position of the recessed portion 7a, the center rail 71b is aligned with the left and right rails 71a and faces the rear rail 72 when the cockpit 8 is in the stowed state with the backrest facing downward. When switched to the state (the state shown in FIG. 14), the fuel supply port 80a provided at the front position of the recess 7a is opened, and fuel can be easily supplied.

In addition, when the cockpit 8 is in the stowed state with the backrest facing downward, the central rail 71b is aligned with the left and right rails 71a and faces the rear rail 72 (the state shown in FIG. 14), and the center rail 71b is switched to the state shown in FIG. The work of supplying the seedling box N or seedling saving board and the work of feeding the seedlings from the seedling box N or the seedling saving board placed on the seedling rail 70 to the seedling mounting table 31 of the seedling planting section 30 are performed. Since the seat 8 is stored with the backrest facing downward, it is possible to prevent the seat surface and the backrest surface of the cockpit seat 8 from getting dirty with muddy soil or muddy water that falls from the seedling box N or the seedling relief board.

In addition, since the operator's seat 8 is in the stowed state and there is no operator's seat 8 in front of the seedling rail 70, the operator is responsible for supplying the seedling boxes N or seedling saving boards to the seedling rail 70 and placing them on the seedling rail 70. The work of supplying seedlings from the seedling box N or the seedling saving board to the seedling mounting table 31 of the seedling planting section 30 can be performed easily and with good workability.

2 Traveling vehicle body 8 Pilot seat 9 Steering handle 30 Seedling planting section 31 Seedling mounting stand 40 Antenna support frame 41L Left vertical frame 41R Right vertical frame 43 Rotating support frame 50 GPS antenna D Interval N Seedling box (A) Upright state (B) ) lying down

Claims (6)

A seedling planting section (30) equipped with a seedling mounting stand (31) is attached to the rear of the traveling vehicle body (2), and the upper part of an antenna support frame (40) is provided at the center left and right of the front end of the traveling vehicle body (2). A riding-type seedling transplanter equipped with a GPS antenna (50), characterized in that the antenna support frame (40) is provided so as to be able to change its posture between an approximately upright standing state (a) and a lying down state (b). Riding type seedling planting machine. The antenna support frame (40) is composed of parallel left and right vertical frames (41L, 41R) and a rotation support frame (43) whose base for changing the attitude of the left and right vertical frames (41L, 41R) is pivotally supported on the aircraft body. When the antenna support frame (40) is laid down horizontally (b), the left and right vertical frames (41L, 41R) extend from the front to the rear of the vehicle body (2), and the left and right vertical frames (41L, 41R) The riding-type seedling transplanter according to claim 1, characterized in that the seedling box (N) is placed on the upper part and is configured to be slidable in the front and rear directions. The riding-type seedling according to claim 2, characterized in that the inclination angles of the left and right vertical frames (41L, 41R) can be changed when the antenna support frame (40) is placed in a horizontally laid down state (b). Planting machine. The riding-type seedling planting machine according to claim 2 or 3, characterized in that the GPS antenna (50) is fixed to the upper ends of the left and right vertical frames (41L, 41R) in a state of protruding forward. Claims 1 to 3 are characterized in that the distance (D) between the left and right vertical frames (41L, 41R) is wider than the left and right widths of the steering handle (9) and the cockpit (8) provided in the left and right center portions of the aircraft body. The riding-type seedling transplanter according to any one of Item 3. The passenger type vehicle according to claim 4, characterized in that the distance between the left and right vertical frames (41L, 41R) is wider than the left and right widths of the steering handle (9) and the cockpit (8) provided in the left and right center portions of the aircraft body. Seedling planting machine.