JPH08266120A - Rice transplanter - Google Patents

Abstract

PURPOSE: To obtain a rice transplanter capable of contacting a seedling transplanter switched to a storing attitude by division and attitude changing to a ground without contacting to rear wheels. CONSTITUTION: A seedling transplanter is divided at an intermediate position in right and left direction, the resultant divided material is rotatably supported to a rotating end position about longitudinal shaft core of a frame part material rotatably supported about longitudinal shaft core at the side of a running machine body, an attitude of the frame part material is changed to an attitude opposing to rear side of the running machine body, and an outer end part in a lateral direction of the divided material is made to turn toward front part of the running machine body by a revolving about longitudinal shaft core to make the seedling transplanter switch to a stored attitude, contriving expansion of longitudinal distance between the seedling transplanter A and the running machine body by elongating the frame part material in a stored attitude and a controlling mechanism C for displacing the divided material to a position not contacting to rear wheels 2, 2 is placed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice planting apparatus in which a seedling planting device for cutting out a seedling placed on a seedling placing table by a planting mechanism and planting it in a field is vertically connected to a rear end of a traveling machine body. More specifically, the present invention relates to a technique for switching to a storage attitude that reduces the lateral dimension of a seedling planting device.

[0002]

2. Description of the Related Art Conventionally, as a rice transplanter configured to reduce the lateral dimension of a seedling planting device as described above, it is disclosed in Japanese Patent Application No. 6-214449 filed by the applicant of the present invention. FIG. 17 (a) is proposed in this conventional example.
As shown in (b), (c), and (d), the seedling planting device A, which is supported at the rear end of the traveling body so as to be able to move up and down, can be freely divided into two divisions AL, AR at the left and right central portions. By configuring the divided objects AL and AR so as to be rotatable around the vertical axis, the seedling planting device A can be used when switching to the storage posture.
The seedlings of the divided objects AL and AR by rotating the lateral ends of the divided objects AL and AR toward the front side of the traveling machine body 3 by raising the height of the divided seedlings to a level away from the ground. The upper edges of the mounting bases 13L and 13R reach a posture in which they approach each other in a parallel posture to reduce the lateral dimension.

[0003]

In the conventional example, since the left and right outer ends of the divided product of the seedling planting apparatus are stored by changing the posture so as to face the front side of the traveling machine body, the end of the divided product is stored in this retracted posture. Is extended to the side of the traveling machine body, so that the divided object easily comes into contact with the rear wheel or the rear end portion of the traveling machine body. Therefore, in the conventional example, when the seedling planting device is switched to the storage posture, the seedling planting device is raised so as to avoid contact with the rear wheels or the like. However, in such a configuration in which the seedling planting device is divided and the posture can be freely changed, parts such as the transmission system of the seedling planting device can be exposed from the split surface of the seedling planting device, so that the storage posture is kept as it is. There is also the aspect that the seedling planting equipment should be grounded and inspected and maintained at a low position.

Further, in order to prevent the seedling planting device from coming into contact with the rear wheels even when the seedling planting device is switched to the retracted posture, the distance between the rear end position (rear wheel) of the traveling machine body and the seedling planting device is set. Although it may be possible to set a large value, increasing the distance between the traveling body and the seedling planting device in this way not only leads to an increase in the size of the entire rice planting device, but also increases the center of gravity when the seedling planting device rises. There is room for improvement because it is easy to move to the rear of the car body and upset the balance of the rice transplanter as a whole.

An object of the present invention is to reasonably construct a rice transplanter capable of grounding in a posture in which the seedling planting device is divided and stored without inviting an increase in the size of the rice transplanter.

[0006]

The features of the present invention (Claim 1) are, as described at the beginning, a seedling planting device for cutting out a seedling placed on a seedling platform by a planting mechanism and planting it in a field. In the rice transplanter in which the
A storage posture in which the seedling planting device is divided at an intermediate position in the left-right direction and the lateral outer end of the divided product is directed to the front side of the traveling machine body by changing the posture around the longitudinal axis of the divided product. It is configured to be freely switchable to, and when the seedling planting device is switched to the retracted posture, it is provided with an adjusting mechanism capable of changing the distance in the front-back direction between the seedling planting device and the traveling machine body, Its action and effect are as follows.

[0007]

According to the above feature (claim 1), when the seedling planting device is switched to the retracted posture in the grounded state, the seedling planting device is attached to the rear wheel of the traveling machine body or the rear end of the traveling machine body. Even if it is at a distance where the split objects come into contact, the height of the ground can be increased without making the seedling planting device in the retracted posture contact the rear wheels by increasing the distance between the traveling body and the seedling planting device by the adjustment mechanism. Can be maintained at In other words, in the present invention, when the seedling planting device is not switched to the storage posture such as during work, the distance between the traveling machine body and the seedling planting device is not increased, and the seedling planting is switched to the storage posture. It is possible to easily perform work such as inspection and maintenance by grounding the attached device.

According to the second aspect of the present invention, since the structure is such that the distance between the traveling machine body and the divided product is increased by the expansion and contraction operation of the member formed on the frame member that supports each divided product, the entire seedling planting device is rearward. Compared with the structure in which the moving mechanism is moved to, the weight of the moving object can be reduced and the strength of the adjusting mechanism does not need to be increased so much.

According to the third aspect of the present invention, the structure for moving the whole seedling planting device in the front-back direction via the link mechanism is provided.
It requires only a single mobile system, eliminating the need for complicated structures.

[0010]

Therefore, by providing the adjusting mechanism capable of changing the distance between the traveling machine body and the seedling planting apparatus, the posture in which the seedling planting apparatus is divided and stored without causing the rice planting machine to be upsized. The rice transplanter capable of grounding was reasonably constructed (claim 1). Further, by adopting a structure capable of adjusting the position of the member formed on the frame member supporting the divided object, it is possible to reduce the size and weight of the adjusting mechanism (claim 2),
Further, in the case of moving the rear end position of the link mechanism, the structure of the adjusting mechanism is simplified and the manufacturing is facilitated (claim 3).

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an engine 4 is mounted on the front part of a traveling machine body 3 provided with a steering type driven front wheel 1 and a driving type rear wheel 2, and the front part of the traveling machine body 3 is mounted. A hydrostatic stepless transmission 5 to which the power from the engine 4 is transmitted, and a transmission case 6 are arranged, and a driving seat 7 is arranged at the center of the traveling body 3, and the rear end of the traveling body 3 is arranged. The seedling planting device A is connected to the section via a link mechanism 9 which is driven up and down by a hydraulic cylinder 8 to form a riding type rice transplanter.

An elevating lever 10 is provided on the right side of the driver's seat 7 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 11 for operating the continuously variable transmission 5 is provided. The planting clutch is built in the mission case 6, and the disengaging operation is allowed only when the transmission shaft 12 that transmits power from the mission case 6 to the seedling planting device A is in a predetermined rotation phase. Seedling planting device A
The planting arm (described later) is configured to cut off the power in a posture that avoids contact with the field.

The seedling planting device A has a mat-shaped seedling W placed thereon, and the upper end of the seedling placement stand 13 is inclined to the front side of the traveling body 3, and the left and right to which power from the transmission shaft 12 is transmitted. A pair of transmission cases 14, 14, this transmission case 14
The rotary case 16 rotates by the power transmitted from the chain case 15 to the rotary case 16, a pair of planting arms 17 are provided in the rotary case 16, a single center float 18C, and a pair of left and right side floats 18S, 18S. Each of the ground leveling floats 18 (see FIG. 8) is configured for eight-row planting, and is equipped with a fertilizer application device B. At the time of operation, seedlings are placed from the lower end of the mat-like seedlings W placed on the seedling placing table 13. The planting arm 17 is configured to cut out one plant at a time and plant it in a field scene, and at the same time, to supply the fertilizer with the fertilizer application device B under the field scene near the planted seedling.

As shown in FIGS. 2 and 3, the link mechanism 9
Is a single top link 9T and a pair of left and right lower links 9
The rear ends of L and 9L are connected to each other by a vertical link 9V, and the front and rear are positioned with respect to the lower end position of an intermediate frame 19 (the structure of attachment / detachment is not described in detail) which is detachably attached to the vertical link 9V. The seedling planting device A is connected and supported so as to be able to roll freely around the rolling axis Y in the facing posture.

As shown in FIGS. 2 to 5, in this rice transplanter, two rows of four rows are provided at the center position of the seedling planting apparatus A in the left-right direction.
It can be divided freely. That is, the first axis X in the vertical posture is provided at both end positions of the main frame 20 that is connected to the intermediate frame 19 so as to be freely rotatable around the rolling axis Y.
The first shaft 21 is arranged on the same axis as the first shaft 21 so as not to rotate.
A cylindrical frame member 23 is fixed to a tubular member 22 that is rotatably supported by a shaft 21, and the swing end of the frame member 23 is coaxial with the second axial core X2 in the vertical posture, and The cylinder shaft 2 is rotatable with respect to the frame member 23.
4, the second shaft 25 is arranged in an internally fitted state, the left and right channel-shaped brackets 26 are rotatably supported around the second shaft 25, and the transmission case 14 and the square pipe are further supported with respect to the bracket 26. The left and right divided objects AL and AR of the seedling planting apparatus A are supported by connecting the support frames 28 in the shape of a circle.
Further, a pair of left and right regulating members 29 are provided at both left and right positions of the main frame 20 so as to project forward, and when the seedling planting apparatus A is raised to the upper limit, the regulating members 29,
The front end of 29 is brought into contact with the lower surfaces of the left and right lower links 9L, 9L to regulate the rolling operation.

As shown in FIG. 5, when the seedling planting apparatus A is set in the working posture, the first axis X is set with reference to the vertical direction.
The upper end side of each of the first and second axial cores X2 is inclined in the direction toward the front side of the traveling body 3, and the seedlings are mounted so as to be coaxial with the second axial core X2 and rotate integrally with the bracket 26. The pillar-shaped frame 30 that supports the base 13 is connected and fixed. In addition, as shown in FIG. 2, the base end of the chain case 15 is connected to the support frame 28,
On the upper surface of the chain case 15, sliding rails 31, 31 for movably supporting the seedling placing table 13 in the left-right direction are arranged.

Further, in this seedling planting device A, when one frame member 23 is swung around the first axis X1 and its pivot end is swung to the rear side of the traveling machine body 3, the other frame member 23 is rotated. 23 is rotated around the first axis X1 to the rear side of the traveling machine body 3, and at the same time, in conjunction with the rotation of the frame member 23, the left and right divided objects AL around the second axis X2, AR
An interlocking operation mechanism (not shown) having a chain, a wire, or the like so that the outer end portion thereof is rotated toward the front side of the traveling machine body 3 by a rotation amount that is twice the rotation amount of the frame member 23. I have it.

A bevel case 32, to which the power from the transmission shaft 12 is transmitted, is arranged at a position displaced to the right of the rolling axis Y, and the power extracted by branching from the bevel case 32 in the left-right direction is transmitted. A clutch is provided for the transmission system transmitted to the case 14. This clutch is arranged on the output shaft side of the bevel case 32, and
A shift member 33 that is slidable in the axial direction and an occlusal member 34 supported by the input shaft of the transmission case 14 are formed on the occlusal claw (not shown) and the occlusal member 34 formed on the shift member 33. The occlusal claw (not shown) is engaged only in a specific rotation phase.

Further, a top (not shown) engaged in the spiral groove of the screw shaft 35 which is rotationally driven by the power of the left transmission case 14.
The lateral feeding mechanism of the seedling placing table 13 is configured by including a moving member 36 for transmitting the moving force of the above to the side opposite to the seedling placing surface of the left divided seedling placing table 13L. A protective frame 37 having a shape surrounding the outer end of the slide rail 31 is connected and fixed to the outer end of the support frame 28 so as to protect the outer end of the slide rail 31. In addition, the seedling placing table 13 is a left and right divided seedling placing table 13
By connecting the L and 13R by a connecting mechanism described later, the sliding rails 31 and 31 are driven by the power from the transverse feed mechanism.
It reciprocates integrally on the top in the lateral direction.

As shown in FIGS. 6 and 7, the seedling placing table 13
The plurality of seedling stays 37, ..., which prevent the mat-like seedlings W placed on the seedling placing table from floating, are provided in the divided seedling placing bases 13L and 13R, respectively, so as to allow the division. The seedling stays 37, ... are oriented around the axis of the arm 40, which is swingable around a swing shaft 39 provided on support metal fittings 38 at both ends of the split seedling mounting bases 13L, 13R. It is provided for the pivot 41 that is swingably attached, and this seedling stay 37 ...
The lower end portion of the seedling W is connected to the lower support plates 42 of the divided seedling placement bases 13L and 13R at an appropriate distance from the seedling placement surface to connect the seedlings W to prevent the seedling W from floating, and By releasing this connection and swinging the seedling arm 37, the posture can be switched to a position that is largely separated from the upper surface of the seedling.

Further, the main frame 20 is provided with locking means (not shown) for holding the support frame 28 in a working posture, and as shown in FIG.
A first connecting mechanism R1 for connecting the 3L and 13R to each other, and a second connecting mechanism R for connecting the left and right sliding rails 31 and 31 to each other
2, as shown in FIG. 2, the plates 43, 43 at the rear ends of the chain cases 15, 15 at positions facing each other with the dividing surface in between.
Each of the rod-shaped third connecting mechanisms R3 arranged between the two is configured so that the divided objects AL and AR can be held in the working posture.

As shown in FIG. 5, in this rice transplanter, the frame member 23 is divided into two members 23A,
23B, a sliding member 44 that is slidably fitted inside the member 23A on the base end side is connected to the member 23B on the rotating end side, and further, each member is expanded and contracted to operate. The hydraulic cylinder 45 is provided to configure an adjusting mechanism C that can change the distance between the seedling planting device A and the traveling machine body 3 in the front-rear direction.

With this configuration, when the seedling planting apparatus A is stored, the hydraulic cylinder 8 is extended to operate the link mechanism 9 to the highest position, and the transverse feed mechanism is driven as shown in FIG. The seedling stand 13 is sent to the left end position by force and stopped, and the first connecting mechanism R1 and the second connecting mechanism R are stopped.
2 is operated to separate, the clutch interposed in the transmission system between the bevel case 32 and the transmission case 14 is disengaged, and the operating position is held (holding structure is not described in detail). The lock releasing operation switches the support frame 28 to a state in which the support frame 28 can freely rotate with respect to the main frame 20, and the third connecting mechanism R3 is removed.

Then, as shown in FIG. 9, the right divided seedling placing table 13R is artificially moved to the right moving end to lock the movement of the divided seedling placing table 13R on the slide rail 31. (Not shown) to prevent (in this state, the distance between the left and right split seedling placement tables 13R, 13L reaches about 30 cm). After that, when either one of the divided objects is rotated by a manual operation, the interlocking operation mechanism interlocks the respective frame members 23, 23, and as a result, the first axis X
1 and X1 swings toward the inside of the traveling machine body 3 on the rear end side of the frame members 23 and 23 at the same time as the second member.
The system supported by the brackets 26, 26 around the axes X2, X2 is in the opposite direction at a speed twice as fast as the rotational speed of the frame members 23, 23, that is, the left and right outer ends thereof are forward of the traveling machine body 3. It will rotate toward the side.

Further, when turning to this storage posture, as shown in FIG. 10, although the corner portions 13E, 13E at the upper inner ends of the left and right split seedling placement stands 13L, 13R are close to each other, the split seedling placement stand in plan view. Since 13L and 13R rotate at positions separated from each other, it is possible to rotate while avoiding contact between the respective corners 13E and 13E, and when the rotation is completed, the storage posture is reached as shown in FIG. . When the storage posture is reached, the third connecting mechanism R3, which has been removed as described above, is separated into the left divided object AL and the right divided object AR as shown in FIGS.
By interposing a fourth connecting mechanism R4 between the left and right regulating members 29, 29 and the left and right protection frames 37, 37 in the separating direction of the left and right divided objects AL, AR. The rotation is blocked and the storing operation is completed.

In this retracted posture, as shown in FIG. 11, the left and right split seedling placing bases 13L and 13R are slid on rails 31,
At the position close to the traveling machine body 3 side on 31, the upper end edges reach a parallel posture in a close state, so the weight of the whole seedling planting apparatus A is moved to the traveling machine body 3 side and the weight of the entire rice transplanter machine is increased. This improves the balance and reduces the lateral dimension of the seedling planting apparatus A. Further, in this storage posture, the frame members 23, 2 are rotated around the first axis X1 in the inclined posture.
As a result of the rotation of 3 as shown in FIG. 13, the rear side of the left and right divided objects AL, AR is lifted upward with respect to the traveling machine body 3, and as a result, the apparent front-back direction of the seedling planting device A is seen in a plan view. At the same time as the size is reduced, the center of gravity of the seedling planting apparatus A is brought closer to the traveling body side. In addition, the divided seedling placing table 1 is formed by rotating the divided objects AL and AR around the second axis X2.
As shown in FIG. 14, the 3L and 13R are switched to the standing posture (the posture in which the front end of the leveling float 18 is lifted), and as a result, the lateral dimension of the seedling planting apparatus A is further reduced.

Further, in this rice transplanter, when the seedling planting apparatus A is switched to the retracted posture, the end portions of the divided products AL and R project toward the traveling machine body 3 and the rear wheels 2 and 2 in plan view. Since they interfere with each other, the inspection and maintenance work is performed by grounding the storage posture, or when performing the work such as separating the seedling planting apparatus A from the rear end of the link mechanism 9 in the grounded state, By extending the hydraulic cylinder 45 of the adjusting mechanism and enlarging both end positions of the frame member 23, as shown in FIGS. 4 and 12, the seedling planting apparatus A is grounded without contacting the rear wheels in the stored posture. It can be done. When the frame member 23 is extended as described above,
Prior to this extension operation, it is necessary to remove an interlocking member such as a chain that constitutes the interlocking operation mechanism.

When the seedling planting apparatus A in the retracted posture is restored to the working posture, the left and right fourth connecting mechanisms R4 are separated, the third connecting mechanism R3 is removed, and the left and right divided objects A are separated.
After confirming that the L and AR are rotated in the restoring direction and the support frame 28 is held in the working posture with respect to the main frame 20 by the lock operation of the locking means, and the clutch is engaged in the proper posture, By locking the connecting mechanism R2, attaching the third connecting mechanism R3, moving the right divided seedling mounting base 13R to the left divided seedling mounting base 13L, and further connecting the first connecting mechanism R1. The seedling planting apparatus A reaches a state where it can be operated.

Further, in this rice transplanter, it is possible to perform the operation of switching the seedling planting apparatus A to the retracted posture at a low level by extending the frame members 23, 23 beforehand by the adjusting mechanism C.

[Other Embodiments] In addition to the above-described embodiments, the present invention can also be configured as follows.

(A) As shown in FIGS. 15 (a) and 15 (b), the top link 9T and the lower link 9 of the link mechanism 9 are connected.
Each link is divided into two members so that each L can be extended in the longitudinal direction, and a slide member 46 (an example of a movable member) that enables the extension and contraction is provided, and the extension and contraction is performed at this portion. As described above, it is possible to configure the adjusting mechanism C that includes the actuator 47 such as an electric motor that slides in a screw type, and that can displace the rear end position of the link mechanism rearward.

(B) As shown in FIGS. 16 (a) and 16 (b), the frame body 48 supporting the base end portion of the link mechanism 9 and the support portion of the hydraulic cylinder 8 is mounted at the rear position of the traveling machine body 3. A double-acting hydraulic cylinder that can support the parallel quadruple link member 49 via a parallel quadruple link member and can swing the link member 49 (an example of a movable member) to displace the entire link mechanism 9 rearward. It is possible to configure the adjusting mechanism C with 50.

Further, in the present invention, the structure for storing may be different from that of the above-mentioned embodiment as long as the outer end of the seedling placing table is switched to the storing posture in which it is directed to the front side of the traveling machine body. Further, it can be applied to a seedling planting device with 10 or more plants.

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

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter

FIG. 2 is a plan view of the transmission system of the seedling planting device in a working posture.

FIG. 3 is a plan view of the transmission system of the seedling planting device in the retracted posture.

FIG. 4 is a schematic plan view of the seedling planting device with the frame member extended in the retracted posture.

FIG. 5 is a side view showing the postures of the first axis and the second axis.

[Figure 6] Vertical side view of the seedling planting device

FIG. 7 is a rear view of the divided seedling placing table showing the arrangement of the seedling stays.

FIG. 8 is a plan view of the rice transplanter with the seedling stand placed at the end of the sliding rail.

[Figure 9] Plan view of rice transplanter with divided seedling mount

FIG. 10 is a plan view of a rice transplanter in which the seedling planting device is divided and rotated.

FIG. 11 is a plan view of the rice transplanter with the seedling planting device set in the retracted posture.

FIG. 12 is a plan view of the rice transplanter with the seedling planting device displaced rearward in the retracted posture.

FIG. 13 is a side view of the seedling planting device in a stored state.

FIG. 14 is a rear view of the seedling planting device in a stored state.

FIG. 15 (a) is a side view of another embodiment (a) in which the adjusting mechanism is set to the contracted state. (B) is another embodiment (a) in which the adjusting mechanism is set to the extended state.
Side view of

FIG. 16 (a) is a side view of another embodiment (b) in which the adjusting mechanism is set to be displaced to the front side. (B) is another embodiment (b) in which the adjusting mechanism is set to be displaced to the rear side. Side view of

FIG. 17 (a), (b), (c), and (d) are plan views of the rice transplanter sequentially showing a state in which the seedling planting device is divided and stored in the conventional example.

[Explanation of symbols]

 3 Traveling machine 9 Link mechanism 13 Seedling platform 23 Frame member 26 Bracket 44 Member A Seedling planting device AL, AR Split C adjustment mechanism W Seedling

Claims (3)

[Claims] 1. A seedling (W) placed on a seedling stand (13)
A seedling planting device (A) that is cut out by a planting mechanism and is planted in a field is vertically connected to the rear end of the traveling machine body (3), and the seedling planting device (A) is Divide at the middle position in the left and right direction,
The lateral outer ends of the divided bodies (AL) and (AR) are directed to the front side of the traveling machine body (3) by changing the postures of the divided bodies (AL) and (AR) around the longitudinal axis. The seedling planting device (A) and the traveling machine body (3) are configured to be freely switchable to the storage posture, and when the seedling planting device (A) is switched to the storage posture.
A rice transplanter equipped with an adjusting mechanism (C) that can change the distance in the front-back direction. 2. A frame member (2) rotatably supported with respect to a member on the side of the traveling machine body (3) about a unit for switching the seedling planting device (A) to a retracted posture.
3) and (23), and the frame members (23) and (2
3) A bracket (2) that supports the divided parts (AL) and (AR) so as to be rotatable around a longitudinal axis with respect to the rotational end position of (3).
6) and (26), and brackets (26) and (2
By turning 6), the left and right ends of the divided parts (AL) and (AR) are directed toward the front side of the traveling machine body (3), and the turning of the frame members (23) and (23) is performed. By turning the end toward the rear of the traveling body (3), the divided objects (AL), (A
R) is configured to be moved toward the center position of the traveling machine body (3) in the left-right direction, and the adjusting mechanism (C) is also provided.
Is formed in the frame member (23) so as to change the length of the frame member (23) in the retracted position in the front-rear direction, and is configured to include members (44), (44) which are movable in the longitudinal direction. The rice transplanter according to claim 1. 3. The traveling mechanism (3), wherein the adjusting mechanism (C) is
2. The rice transplanter according to claim 1, which is composed of a movable member that displaces the rear end position of the link mechanism (9) that supports the seedling planting device (A) in a vertically movable manner.