JP3378351B2 - 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 rice transplanter having a seedling planting device connected to a traveling machine body, and more particularly to improvement of the seedling planting device.

[0002]

2. Description of the Related Art A seedling planting device connected to a rice transplanter is a seedling platform on which mat-shaped seedlings are placed, and a planting arm for cutting one seedling from the bottom end of the mat-shaped seedlings and planting it in a field. , A plurality of ground leveling floats, and a transmission system for driving them, etc., and conventionally, in a seedling planting device for multi-row planting such as 8-row planting, the dimension in the lateral width direction is large, and Since it is a form that projects greatly in the direction, when traveling on the road etc. during non-working, the seedling planting device is temporarily separated from the machine body, and the posture of this seedling planting device is rotated by 90 degrees ( The lateral direction is set to the front-back direction of the machine body, and the lateral end of this seedling planting apparatus is connected to the machine body and pulled to reduce the lateral extension of the planting machine from the machine body.

In addition, even when a truck is used when the rice transplanter is moved, the seedling planting device is often separated from the machine body so as to fit within the width of the bed.

[0004]

As described above, the work of changing the posture of the seedling planting device and connecting the seedling planting device to the machine body is not only time-consuming, but also time-consuming and labor-intensive, so there is room for improvement. For the purpose of eliminating this inconvenience, the seedling planting device is divided into planting strip units, and the divided products are connected to each other via link members so that the posture can be changed freely. It is also conceivable that the posture can be freely changed.

However, in the conventional seedling planting device, the relative distance in the vertical direction between the field scene and the operating locus of the planting arm is changed by changing the swinging posture of the arm that supports the ground leveling float with respect to the transmission case or the like. Since the planting depth adjusting axis that adjusts the planting depth of seedlings is formed over almost the entire width of the planting plant, the planting plant is divided into planting strip units as described above. When switching to the retracted posture, the planting depth adjusting shaft may hinder the division.

Further, in the conventional seedling planting apparatus, the relative distance between the mat-shaped seedling placed on the seedling table supported by the transmission case or the like via the sliding rail and the operation locus of the planting arm is changed. When the seedling planting device is divided into planting strip units and switched to the storage position as described above, the seedling planting amount adjusting shaft for adjusting the seedling planting amount is formed over almost the entire width of the seedling planting device. It is conceivable that this planting depth adjustment axis may hinder the division.

It is also possible to divide these shafts into a plurality of parts for each divided portion of the seedling planting device, and to operate each of the shafts separately at the time of operation, but the operation becomes troublesome. Not only that, but there is room for improvement because it is possible that the operator forgets to operate.

An object of the first aspect of the present invention is to make it possible to change to a storage posture in which the seedling planting device is not hindered by a planting depth adjusting shaft and the amount of overhanging the seedling planting device in the lateral direction of the machine is reduced. The second aspect of the present invention is to provide a storage posture in which the seedling planting device is prevented from overhanging in the lateral direction of the machine without being obstructed by the seedling harvesting amount adjusting shaft. The reason is that the rice transplanter that can easily change the amount of seedlings is rationally configured.

[0009]

The first aspect of the present invention is characterized in that a plurality of leveling floats, a plurality of planting arms, and a seedling stand are provided respectively, and a relative position between the leveling float and the seedling planting arm is provided in a transmission case. Adjust the seedling planting depth by adjusting the planting depth adjusting shaft so that it can swing freely around the horizontal axis .
This planting depth adjustment shaft is connected to a single operating lever
In order to adjust the seedling planting depth by adjusting the operation lever, in a rice transplanter comprising a traveling machine body and a seedling planting device configured for multiple-row planting, the seedling planting device is planted. Article unit
In switched freely configured into a working position that does not perform a storage position and attitude changing <br/> reduce the overhang of the machine body transverse direction, the planting depth adjusting shaft, the attitude of the seedling planting apparatus A connection part is formed to allow the division and the connection to be integrally rotated with the change , and the connection part is the work case of the transmission case of the seedling planting device.
It is divided according to the posture change from the momentum to the stored posture, and work
When the posture is changed to the posture, it will be connected in an integrated rotation state.
And the action and effect are as follows.

A feature of the second invention is that it is provided with a plurality of leveling floats, a plurality of planting arms, and a seedling stand, and
Adjustable by adjusting the relative position of the sliding rail that supports the seedling stand in the transmission case so that it can slide laterally and the seedling planting arm. Equipped with a seedling take-up control shaft, this seedling take-up control shaft can be
The seedling collection amount by adjusting the operation lever by connecting
In rice transplanter comprising connecting the seedling planting apparatus constructed for plural rows planted so as to section the vehicle body, the seedling planting device, stored position to reduce the overhang of the machine body transverse direction in the planting conditions units When
It can be freely switched to a work posture that does not change the posture ,
Further, the taking quantity adjustment shaft, accompanied to the attitude change of the seedling planting apparatus
A connecting portion is formed to allow non- splitting and connection in an integrally rotated state , and the connecting portion is the transmission case of the seedling planting device.
It is divided when the posture changes from the work posture to the storage posture.
When the posture is changed to the working posture, it is connected to the integrated rotation state.
It is configured as described above , and its action and effect are as follows.

[0011]

According to the features of the first invention (claim 1), when the seedling planting device is switched to the retracted posture, the planting depth adjusting shaft is divided at the connecting portion, or is divided. It is possible to perform the retracting operation by changing the posture so that the amount of overhanging the seedling planting device in the lateral direction of the machine can be reduced, and vice versa. in this case, the transmission cable along with the changing of the posture of the seedling planting apparatus
Integral rotation state connecting part vinegar is changed attitude to work attitude
By connecting the planting depth adjusting shaft, the relative position between the multiple grounding floats and the plurality of planting arms can be controlled by operating a single operating lever connected to the planting depth adjusting shaft. It will be adjustable.

That is, since the planting depth adjusting shaft is configured to be split and connectable, it does not hinder the switching to the retracted posture, and in the working posture, a single operating lever is operated to plant all the planting strips. It is possible to adjust the depth of application.

According to the second aspect of the present invention (claim 2), when the seedling planting device is switched to the retracted posture, the seedling take-up amount adjusting shaft is divided at the connecting portion, or the division is performed. By setting it in a permitted state and changing the posture so that the lateral extension of the seedling planting device is reduced, it becomes possible to carry out the retracting operation. Conversely, when switching from the retracted posture to the working posture. Is transmitted along with changing the posture of the seedling planting device.
When the case is changed to the work posture, the connecting part rotates together
Is connected to the state, by coupling the taking quantity adjustment shaft, you can adjust the relative position between the sliding rail and a plurality of planting arm by operating the single operation lever connected to the taking quantity adjustment shaft Will be things.

In other words, by constructing the seedling collection amount adjusting shaft so as to be split and connectable, it does not hinder the switching to the storage posture, and in the working posture, a single operation lever is operated to operate the seedlings of all the planting lines. The amount can be adjusted.

[0015]

As a result, it is possible to change the storage posture in which the seedling planting device is prevented from being laterally extended without being obstructed by the planting depth adjusting shaft, and the planting depth can be easily adjusted. In addition, the rice transplanter can be changed to a storage position that reduces the lateral extension of the seedling planting device without being obstructed by the seedling take-up position adjusting axis, and the seedling take-up amount can be adjusted. The rice transplanter that could easily perform the above was reasonably constructed.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 11, the engine 4 is mounted on the front part of the traveling machine body 3 including the driving type front wheel 1 and the driving type rear wheel 2 which are steered, and the central part of the traveling machine body 3 is mounted. The driver's seat 5 is disposed in the vehicle, and the link mechanism 7 is driven up and down by the lifting cylinder 6 with respect to the rear end of the traveling body 3.
The seedling planting apparatus A is connected via the to construct a riding type rice transplanter.

An elevating lever 8 is provided on the side of the driver's seat 5 for controlling the raising and lowering of the plant A for planting seedlings and for turning on and off a planting clutch (not shown). A gear shift lever 9 is provided. The planting clutch controls the seedling planting device A by being interposed in a transmission system from the traveling machine body 3 to the seedling planting device A.

The seedling planting device A is transmitted through a seedling mount 10 on which a mat-like seedling W is placed, a pair of left and right transmission cases 11 to which power is transmitted from the traveling machine body 3, and the transmission case 11 through a chain case 12. A rotary case 13 that rotates by power, a pair of planting arms 14 provided in pairs in the rotary case 13, and four leveling floats 15 each are configured for eight-row planting, and are placed on the seedling placing table 10 during work. From the lower end of the mat-like seedling W, the planting arm 14 cuts out the seedlings one by one, and is planted in a field scene.

As shown in FIGS. 1 and 4, the transmission case 1
1. A planting depth adjusting shaft that supports the front part of the ground leveling float 15 with respect to the lower surface of 1 through a bending / extending link 16 and that is provided on the lower surface of the transmission case 11 so as to be rotatable around an axis in a horizontal posture. A rear portion of the leveling float 15 is swingably connected to a swing end of an arm 18 connected to 17, and an operation lever 19 connected to a planting depth adjusting shaft 17 is locked at a predetermined position of a lever guide 20. Grounding float 1 by fixing
5, namely, the field scene S and the planting arm 14, that is, the relative locus of the operation locus T of the planting claw of the planting arm 14 is changed to adjust the planting depth. is there.

Further, the sliding rails 21 for supporting the seedling placing table 10 so as to be reciprocally movable in the left and right directions can be moved in a direction along the placing surface of the seedling placing table 10 so that the sliding rails 21 can be moved.
A shaft member 22 connected to the chain case 12 is slidably supported on the chain case 12, and is formed on the upper surface of the transmission case 11 to be a seedling-taken amount adjusting shaft 23 which is pivotally and swingably supported around a shaft axis in a horizontal posture. The swinging end of the arm member 24 is engaged with the engaging member 25 on the lower surface of the slide rail 21, and the operating lever 26 connected to the seedling-picking amount adjusting shaft 23 is connected to the lever guide 27.
By locking and fixing it at a predetermined position, the sliding rail 21, that is, the mat-shaped seedling W placed on the seedling placing table 10, and the planting arm 14, that is, the operation locus of the planting claw of the planting arm 14. It is configured so that the relative amount of seedlings can be adjusted by changing the relative positional relationship with T.

The planting depth adjusting shaft 17 and the seedling picking amount adjusting shaft 23 are separated at the divided portions so as not to prevent the operation of dividing the seedling planting device A and switching to the storage posture as described later. The connecting portions B and C are formed so as to be freely connected. That is, as shown in FIGS. 2A and 2B, the planting depth adjusting shaft 17 uses a pipe material, and the connecting portion B has a non-circular fitting hole 28 and a fitting hole 28. And a tapered fitting piece 29 for integrally rotating the planting depth adjusting shaft 17, and the seedling picking amount adjusting shaft 23 is made of a solid member. As shown in FIGS. 3A and 3B, C is a tubular member 3 having a slit-shaped engagement groove 30A.
0 and the engaging groove 30 in a state of being inserted into the tubular member 30.
A tapered fitting member 31 having a pin 31A engaging with A
And is configured.

In this rice transplanter, the seedling planting device A is freely divided into four sections, and the posture of the divided product is changed to reduce the lateral overhang of the machine. It is configured so that it can be switched to a work position that does not divide.

That is, as shown in FIG. 5 and FIG. 6, the first bracket 33 formed on both sides of the elevating frame 32 connected to the rear end of the link mechanism 7 has a first supporting shaft having a longitudinal axis. A first arm 35 is swingably connected about a shaft 34, and a second arm 37 is swingably connected to a swing end of the first arm 35 about a second support shaft 36 having a longitudinal axis. A second bracket 40 formed on left and right planting frames 39, 39 is swingably connected to a swing end of the second arm 37 about a third support shaft 38 having a longitudinal axis.

The planting frame 39 supports the seedling placing table 10A, which is divided into four sections, the leveling float 15, and the left and right transmission cases 11, and the output shaft 41 from which the power from the machine is transmitted. Power is transmitted to the transmission case 11 via the bevel case 42 and the intermediate shaft 43. The bevel case 42 and the intermediate shaft 43 are integrally configured to be separable from the output shaft 41, and the intermediate shaft 43 is configured to be expandable and contractable by a structure in which the shaft body is internally fitted to the tubular shaft in a spline fitting state. Further, it is configured to be bendable by providing universal joints at both ends.

By constructing the seedling planting apparatus A in this way, as shown in FIG. 7, when the seedling planting apparatus A in the working posture is switched to the storage posture, the lock for connecting the left and right seedling placing bases 10 is locked. A lock mechanism (not shown) and a lock mechanism (not shown) that connects the left and right planting frames 39 are unlocked, the bevel case 42 is separated from the output shaft 41, and the slide rail 21 is disconnected. After that (not shown), the divided pieces of the seedling planting device A are artificially pulled out in the lateral direction of the machine, respectively, and the divided pieces are largely separated from each other as shown in FIG. By rotating the inner side of the device A to a posture toward the rear of the machine body, the storage posture can be switched to the posture shown in FIGS. 9 and 10.

When the storage posture is switched in this way, the connecting portions B and C of the planting depth adjusting shaft 17 and the seedling picking amount adjusting shaft 23 are automatically separated, and the seedling planting device A is moved to the storing posture. Allowing the posture change and performing the reverse operation to the above operation, the seedling planting device A
When switching to the work posture, the planting depth adjustment shaft 17,
One in which the connecting portions B and C of the seedling taking amount adjusting shafts 23 naturally reach the connected state, and the operation depth of the entire row and the taking amount of the seedling can be adjusted by operating the single operating levers 19 and 26. Has become.

[Other Embodiments] In addition to the above embodiments, the present invention may be configured such that the operation of changing the seedling planting device to the retracted posture is performed using an actuator such as a hydraulic cylinder or an electric motor. Yes, it is possible to use a buckle type structure for the connection part of the planting depth adjustment shaft and the seedling collection amount adjustment shaft, and configure it so that it can be switched between the connected state and the separated state manually. Is.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a seedling planting device showing a planting depth adjusting shaft and a seedling collecting amount adjusting shaft.

[Fig. 2] (a) is a side view of the connecting portion of the planting depth adjusting shaft. (B) is a cross-sectional view of the connecting part of the planting depth adjustment shaft

[Fig. 3] (a) is a side view of the connecting portion of the seedling removal amount adjusting shaft. (B) is a cross-sectional view of the connecting part of the seedling amount adjustment shaft

[Fig. 4] Side view of the part where the planting depth adjusting shaft and the seedling taking amount adjusting shaft are arranged.

FIG. 5 is a schematic plan view of the seedling planting device in a working posture.

FIG. 6 is a schematic plan view of the seedling planting device in the retracted posture.

[Figure 7] Plan view of rice transplanter with seedling planting device set to work position

FIG. 8 is a plan view of the rice transplanter with the seedling planting device divided.

FIG. 9 is a plan view of the rice transplanter with the seedling planting device set in the retracted posture.

FIG. 10 is a rear view of the seedling planting device set to the retracted posture.

[Figure 11] Overall side view of rice transplanter

[Explanation of symbols]

10 seedling stand 14 Planted arm 15 Leveling float 17 Planting depth adjustment axis 21 Sliding rail 23 Seedling control axis A seedling planting equipment B connection C connection

─────────────────────────────────────────────────── ───Continued from the front page (56) References JP-A-4-66018 (JP, A) Actually open 61-120320 (JP, U) Actually open 61-83824 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) A01C 11/02

Claims (2)

(57) [Claims] 1. A plurality of leveling floats (15), a plurality of planting arms (14), and a seedling stand (10) are provided respectively, and a leveling float (15) and a seedling planting arm (14) are provided in a transmission case. The planting depth adjusting shaft (17) is provided so that it can be freely swung around the axis of a horizontal posture so that the planting depth can be adjusted by adjusting the relative position of the planting depth.
The operating lever (19) connected to the operating lever (19)
A seedling planting device (A) configured for multiple- row planting to adjust a seedling planting depth by adjusting operation of (1) is connected to a traveling machine body, wherein the seedling planting device (A) is switching freely configured into a working position that does not perform a storage position and posture changes to reduce the overhang of the machine body transverse direction in the planting conditions units, also the planting depth adjustment shaft (17), seedling planting A connection part (B) is formed which allows the device (A) to be split and connected in an integrally rotated state when the posture of the device (A) is changed , and the connection part (B) transmits the seedling planting device (A).
The dynamic case changes from the working posture to the retracted posture.
It is divided into two parts, and when the posture is changed to the work posture, it rotates as a unit
Rice transplanter configured to be connected to . 2. A plurality of leveling floats (15), a plurality of planting arms (14), and a seedling stand (10) are provided respectively, and the seedling stand (10) is slidable laterally in a transmission case. Sliding rails (21) and seedling planting arms (1)
4) and pivotally taking quantity adjustment shaft in the axial center around the horizontal position so as to adjust the seedling-up amount by adjusting the relative position of the equipped with (23), a single the taking quantity adjusting shaft (23) Operation lever (2
6) by connecting to the operation lever (26)
A rice transplanter comprising linked seedling planting configured for planting plural rows so as to adjust the seedling-up amount device (A) to the vehicle body, the seedling planting apparatus (A), at the planting condition units switching freely configured into a working position that does not perform a storage position and posture changes to reduce the overhang of the machine body transverse direction, the taking quantity adjustment shaft (23), the attitude of the seedling planting apparatus (a) A connection part (C) is formed to allow the division and the connection to be rotated together with the change , and the connection part (C) transmits the seedling planting device (A).
The dynamic case changes from the working posture to the retracted posture.
It is divided into two parts, and when the posture is changed to the work posture, it rotates as a unit
Rice transplanter configured to be connected to .