JP3432632B2 - 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 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 reducing 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. In the conventional example shown in FIG. 33 (a),
As shown in (b), (c), and (d), the seedling planting device A is configured to be freely divided into two divisions AL and AR at the left and right central portions, and the divisions AL and AR are vertically arranged. The lateral outer ends of the divided products AL and AR are directed toward the front of the traveling machine body 3 by the rotation about the axis, and the upper end edges of the divided seedling placing bases 13L and 13R of the divided products AL and AR are also joined to each other. Is configured so that the divided pieces 13L and 13R can be brought close to each other in a parallel posture and can be switched to a storage posture in which a lateral dimension is reduced.

[0003]

In the above-mentioned conventional example, the size in the left-right direction can be reduced by changing the posture of the left and right divided objects. Further, in the case where the seedling planting device is divided into two in this way, a lock member is provided between the member on the side of the traveling machine body and the divided product because it is necessary to hold the left and right divided products in a predetermined posture during work. It is also possible. However, in the structure in which the lock members are operated independently, it is necessary to individually operate each lock member in the releasing direction when the seedling planting device is divided and stored, and there is room for improvement in terms of labor. Further, in the structure in which the left and right divided parts are interlocked to rotate like the conventional example,
Although the left and right divided objects reach the work posture at the same time when the stored posture is restored to the work posture, if the lock members are operated independently as described above, they are locked separately when the work posture is restored. It is necessary to operate in the direction, and there is room for improvement in this respect as well. Further, in the case where the seedling planting device is divided and can be switched to the storage posture, it is conceivable that the transmission system can be configured to be separable by using a dog clutch or the like to allow this switching. There is room for improvement because it may take some time to match the axes of the separated transmission shafts when connecting the transmission systems when the posture is restored to the working posture.

An object of the present invention is to perform a lock releasing operation without trouble when dividing a seedling planting device which is constructed so as to be able to be divided and stored, and to restore a storage posture to a working posture. The point is to reasonably configure a rice transplanter that can be locked without any trouble and that the transmission system can be connected without any trouble when the storage posture is restored to the working posture.

[0005]

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 rear end of the traveling machine body is vertically movable, the seedling planting device is configured to be split at an intermediate position in the left-right direction, and the split product of the seedling planting device is provided around the longitudinal axis. By changing the posture of the divided object, the lateral outer end of the divided object can be switched to a retracted posture in which the outer end portion of the divided object is directed to the front side of the traveling machine body. A lock member that engages with an engagement member formed on the divided object to hold the divided object in a working posture, and the left and right locking members are respectively provided on the traveling machine body side members so that the lock members can be simultaneously operated. Connected and fixed to a single shaft that is swingably supported in a horizontal position. And, by the power from the traveling machine body
If the driven output shaft is provided in the member on the traveling body side,
In addition, the power from this output shaft is branched at the branching part
Supports the transmission shaft that transmits to each of the left and right engaging members
Separate the transmission system between the branch and the transmission shaft, or
By separating the transmission system from the output shaft to the branch
Separation allowance hand that allows switching of the seedling planting device to the storage posture
Located that it includes a stage (claim 1), also located in that it includes an interlock operating means for switching said on storage division thereof respectively a conjunction with the posture and the working position (claim 2), As a Action,
And, the effects are as follows.

[0006]

According to the above feature (claim 1), when the seedling planting device is switched to the retracted posture, it is swingably supported in the lateral posture by operating in the unlocking direction. Since the left and right lock members connected and fixed to one shaft actuate simultaneously in the unlocking direction and in the direction of separating from the engaging member, the left and right divided objects can be stored in the retracted posture without performing other operations. Switching is made possible, and the left and right divisions are switched to the storage posture in which the outer ends in the left and right direction are directed to the front side of the traveling machine body, and the lateral dimension is reduced.
When switching the seedling planting device to the retracted position, separation permission is required.
The transmission system between the branch and the transmission shaft by means of
Or separate the transmission system between the output shaft and the branch.
By doing so, the posture of the split object without being obstructed by the transmission system
Allows changes and locks each other in working position
The branch and the transmission shaft are supported by the lock member and the engaging member.
Since it is held, when restoring from the retracted posture to the working posture
Also, the relative posture between the branch and the transmission shaft, or the output shaft
And maintain the relative posture between the branch and
It will facilitate the operation. According to claim 2,
When restoring the stored postures to the work posture, simply operating one of the divisions in the restoration direction causes the interlocking operation means to simultaneously operate the other divisions in the restoration direction. When the work posture is reached, the left and right lock members can be engaged with the engagement members of the left and right divided objects and held in the work posture.

[0007]

Therefore, the unlocking operation for dividing the seedling planting device configured to be divided and stored freely can be performed without trouble, and the transmission when the storage posture is restored to the working posture.
The operation of connecting the moving system can be performed without trouble (Claim 1),
Further, the rice transplanter can be rationally constructed so that the locking operation when the storage posture is restored to the working posture can be performed without trouble (claim 2) .

[0008]

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 for transmitting power from the engine 4 and a transmission case 6 are arranged in
Further, the driver's seat 7 is arranged in the center of the traveling machine body 3, and the seedling planting device A is connected to the rear end portion of the traveling machine body 3 via the link mechanism 9 driven and moved up and down by the hydraulic cylinder 8. Configure rice transplanter.

The right side of the driver's seat 7 is provided with an elevating lever 10 for controlling the raising and lowering of the seedling planting device A and turning on and off a planting clutch (not shown), and the left side of the driver's seat 7 is provided. A gear shift lever 11 for operating the continuously variable transmission 5 is provided. It should be noted that the planted clutch corresponds to the shift case 6
The planting arm of the seedling planting apparatus A (described later) is allowed to cut only when the transmission shaft 12 that transmits power from the transmission case 6 to the seedling planting apparatus A is in a predetermined rotation phase. Is configured to shut off the power in a posture that avoids contact with the field.

The seedling planting apparatus A has a mat-shaped seedling W placed thereon, and the upper end side of the seedling placement table 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
A rotary case 16 which is rotated by the power transmitted from the chain case 15 to the rotary case 16, a pair of planting arms 17 provided in the rotary case 16 one by one, and a plurality of ground leveling floats 18 for eight-row planting. , Equipped with a fertilizer application structure in which the granular fertilizer stored in the hopper 19 is fed by the feeding mechanism 20 to the groove making device 22 via the tube 21, and at the time of operation, the mat-like seedling W placed on the seedling placing table 13 At the same time that the planting arm 17 cuts out the seedlings from the lower end one by one and planted in the field scene, fertilizer is supplied by the fertilizer application under the field scene near the planted seedling. In addition, the rotary case 16, the planting arm 17, and a system for driving them constitute a planting mechanism.

As shown in FIGS. 2 and 3, the bending and stretching link 2
The rocking end of the arm 25 connected to the planting depth adjusting shaft 24 that supports the front part of the leveling float 18 via 3 and is rotatably provided on the lower surface of the chain case 15 about the axis of the lateral posture. The intermediate part of the ground leveling float 18 is swingably connected and supported, and the planting depth adjusting lever 27 is connected to the planting depth adjusting shaft 24 via a swing lever 26 connected to the planting depth adjusting shaft 24 and an intermediate operating shaft 27A. By locking and fixing at a predetermined position of the guide 28, the relative level relationship between the ground leveling float 18, that is, the field scene S and the operation locus T of the planting claw of the planting arm 17 is changed to adjust the planting depth. It is configured to be possible.

A sliding rail 29, which supports the seedling placing table 13 so as to be reciprocally movable in the left-right direction, can be vertically moved along the placing surface of the seedling placing table 13 so that the sliding rail 2 can be moved.
A shaft member 30 connected to 9 is slidably supported on the chain case 15, and a seedling-picking amount adjusting shaft 31 is supported on the upper surface of the chain case 15 so as to be rotatable and swingable around a shaft center in a horizontal posture. The swing end of the formed arm member 32 is engaged with the engaging member 33 on the lower surface of the slide rail 29, and is connected to the swing lever 34 connected to the seedling-pickling amount adjusting shaft 31 via the intermediate operation shaft 35A. By locking and fixing the seedling picking amount adjusting lever 35 at a predetermined position of the lever guide 36, the level of the sliding rail 29 is set, and the mat-like seedling W placed on the seedling placing table 13 and the planting arm 17 are set. It is configured such that the relative amount of seedlings can be adjusted by changing the relative positional relationship with the operating locus T of the planting claw.

Further, the planting depth adjusting shaft 24 and the seedling picking amount adjusting shaft 31 are coaxially arranged so as to allow a posture change in which the seedling planting apparatus A is divided into two and switched to a storage posture, as described later. It is a fitting type that is composed of two members on the left and right, and is engaged and disengageable only in a specific rotation posture at the positions where the planting depth adjusting shafts 24, 24 and the seedling-picking amount adjusting shafts 31, 31 face each other. The ground leveling float 18 is provided with connecting mechanisms 37 and 38, and the leveling float 18 is composed of a single center float 18C and left and right side floats 18S and 18S arranged at a central position in the left-right direction.

As shown in FIGS. 8 and 17, the link mechanism 9 includes a top link 9T and a pair of left and right lower links 9L,
The rear end of each 9L is connected by a vertical link 9V, and the seedling planting device A is connected to the vertical link 9V via an intermediate frame 41 that is detachable (the detachable structure is not described in detail). , This intermediate frame 4 as shown in FIGS.
1. A seedling planting device A capable of rolling freely around a rolling axis Y in a front-back direction with respect to the rolling boss 42 at the lower end of 1.
And a guide rod 46 that guides a moving member 45 that is screwed onto the screw shaft 44. The screw shaft 44 is horizontally supported by the electric motor 43 with respect to the intermediate frame 41. , The moving member 45 and the seedling stand 1
A tension type rolling spring 49 having an extension member 48 connected to an inner end is interposed between the columnar frames 47, 47 arranged at the left and right positions of the third frame 3, and on the upper surface of the intermediate frame 41. A pair of fixed left and right engaging rods and 50,
An extension rod 52 having an extension rod 52 connected to the inner end thereof is interposed between 50 and brackets 51, 51 arranged at left and right positions on the side opposite to the seedling placing surface of the seedling placing table 13. . Extension rods 5 for the left and right return springs 53, 53
An operation shaft 54 having a shape projecting upward is welded and fixed to the right one of the reference numerals 2, 52, and the inner end of the extension rod 52 is engaged so that it can be artificially removed from the engagement rod 52.

As shown in FIGS. 7 to 10, in this rice transplanter, the seedling planting device A is divided into two sections at a central position in the left-right direction. That is, the plate 55 rotatably connected to the rolling boss 42.
Upper plate 56A and lower frame 5 connected to each other
6B and main frame 56, and the main frame 56
A pair of left and right regulating arms 57, 57 are extended from the front to the front, and when the regulating arms 57, 57 are raised to the seedling planting apparatus A, they are brought into contact with the lower surfaces of the left and right lower links 9L, 9L. The rolling operation of the seedling planting device A is regulated. In addition, a cylindrical member rotatably supported by the first shaft 58, in which the first shaft 58 is non-rotatably arranged coaxially with the vertically oriented first shaft X1 at both ends of the main frame 56. A cylindrical frame member 60 is fixed to the frame member 59, and the second axis X2 in the vertical posture is attached to the swing end of the frame member 60.
The second shaft 62 is disposed in the cylindrical shaft 61 so as to be rotatable with respect to the frame member 60 and coaxial with the second shaft 62 (see FIG. 7). The left and right channel-shaped brackets 63 are movably supported, and the square pipe-shaped support frame 6 is further supported with respect to the brackets 63.
4 are connected to support the left and right splits AL and AR of the seedling planting device A.

As shown in FIG. 7, with the seedling planting apparatus A 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 machine body 3, is coaxial with the second axial core, and is in the shape of the pillar so as to rotate integrally with the bracket 63. The frame 47 is connected and fixed, and the left and right support frames 6 are horizontally arranged on the anti-seedling mounting surface side of the seedling mounting table 13 with the upper ends of the left and right columnar frames 47, 47.
It is connected to 5,65. Further, the transmission case 14 is connected to the bracket 63, and the base end of the chain case 15 is connected to the support frame 64. The sliding rails 29 are arranged so as to movably support them.

FIG. 8, FIG. 9, FIG. 14 (a), (b), FIG.
As shown in FIG. 7, the power from the transmission shaft 12 is applied to the intermediate shaft 1.
The bevel case 66 transmitted via 2A is arranged at a position displaced to the right of the rolling axis Y, and the bevel case 66 is provided with output shafts 67, 67 for branching and extracting power in the left and right directions. The left and right transmission cases 1
Intermediate shafts 69, 69 that are connected to the input shafts 68, 68 of 4, 14 via universal joints extend inward of the seedling planting device A, and the intermediate shaft 69 and the output shaft 67 are occlusal type. It is equipped with a clutch mechanism. The clutch mechanism includes a shift member 70 slidably fitted to the output shaft 67, an engagement member 71 fixed to the end of the intermediate shaft 69, and the shift member 70 attached in the direction of the engagement member 71. The shift member 70 includes a biasing spring 72.
The occlusal nail 70A formed on the occluder and the occlusal nail 71A formed on the occlusal member 71 are configured to occlude only at a specific rotation phase. Further, a link member for simultaneously operating the shifters 70, 70 that can be operated to contact the respective shift members 70, 70 so that the left and right shift members 70, 70 are simultaneously inwardly operated to simultaneously disengage the left and right clutch mechanisms. A clutch release lever 75 for disengaging the clutch mechanism is provided at the upper end position of the intermediate frame 41, and the clutch release lever 75 and the link member 74 are linked via a wire 76.

Further, a top (not shown) engaged in the spiral groove of the screw shaft 81 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 82 that transmits and transmits the moving force of the above to the opposite seedling placing surface side of the left divided seedling placing table 13L. A protective frame 83 having a shape that surrounds the outer end of the slide rail 29 is connected and fixed to the outer end of the support frame 64 so as to protect the outer end of the slide rail 29. The seedling placing table 13 is connected to the left and right divided seedling placing tables 13L and 13R by a connecting mechanism to be described later, so that the sliding rail 29,
The upper and lower parts 29 are integrally reciprocated in the lateral direction.

As shown in FIGS. 10 to 12, the first shaft 5
A main sprocket 84 is fixedly installed coaxially with the first axis X1 at an upper position of 8, and a plate-like turning member 85 is rotatably provided around the first axis X1 at an upper end position of the first shaft 58.
And the bracket 63 rotatably supported with respect to the second shaft 62 and the support frame 47 integrally rotate, and the number of teeth of the main sprocket 84 is 1/2.
The driven sprocket 86 having the number of teeth is arranged coaxially with the second axis X2, and the chain 87 is further wound around the main sprocket 84 and the driven sprocket 86.
As shown in FIG. 13, the outer circumference of the chain 87 is a flexible tube 8 in which a slit 80A is formed on the winding inner surface side.
It is covered with 0.

The left and right rotating members 85, 85 are arranged at a higher level than the left and right frame members 60, 60, and
One end of the rods 88, 88 in the suspended posture is welded and fixed to the rotary members 85, 85 so as to rotate in association with the rotation of the frame members 60, 60.
The other end of the pair of wires 8 is screwed to the frame members 60, 60, and the left and right rotating members 85, 85 are rotated in opposite directions.
9,89 are stretched. The rod 88 has a turnbuckle 88A in the middle thereof, and a length adjusting portion 89A for adjusting the length in a screw manner in the middle of the wire 89.

As shown in FIGS. 15 to 17, round pipe-shaped engagement members 90, 90 are connected and fixed in a horizontally long position at the front positions of the left and right support frames 64, 64, respectively, and the lower frame of the main frame 56 is connected. Lock members 92, 92 are fixedly connected to each other in a form of projecting rearward with respect to a left and right position of a shaft body 91 which is swingably supported by 56B in a horizontal posture. A concave engagement portion 92A that engages with the engagement member 90 from below is formed on the upper surface side of the lock member 92, and a spring 93 that swings the lock member 92 in the locking direction is provided. A lock release lever 94 for simultaneously operating the lock member 92 in the release direction is provided at the upper end position of the intermediate frame 41, and the lock release lever 94 and the lock member 92 are linked via a wire 95. The plate-shaped intermediate member 96 connected to the engaging member 90 supports the intermediate shaft 69 in an idling manner so that the relative positional relationship between the engaging member 90 and the intermediate shaft 69 does not change significantly. is there.

As shown in FIGS. 3 and 5, the seedling planting device A
To maintain this work posture when the
The first connecting mechanism R is provided at the upper position of the anti-seedling mounting surface of the seedling mounting table 13.
1, the second connecting mechanism R2 is formed at the connecting position of the support frames 65, 65, and the left and right sliding rails 2 are formed.
A third connecting mechanism R3 is formed between the lower surfaces of 9 and 29,
The fourth connecting mechanism R is provided between the lower dividing surfaces of the seedling placing table 13.
4, and as shown in FIG. 8, a connecting rod B is provided between the rear ends of the chain cases 15 and 15 at positions sandwiching the dividing surface. Further, as will be described later in the storing operation, as shown in FIG. 9, when the seedling planting apparatus A is set in the storing posture, the regulating arms 57, 57 and the protection frame 83, in order to maintain the storing posture. A fifth connection mechanism R5 is provided between the third connection mechanism 83 and the third connection mechanism 83.

As shown in FIGS. 20 and 21, the first connecting mechanism R1 is engaged on one side of the outer surface of the cover 98 which covers the guide rail 97 arranged on the side opposite to the seedling placing surface of the seedling placing table 13. The buckle type is configured to pull the joint piece 99 by the operation of the arm 100 on the other side and hold it in the engaged state. As shown in FIG. 22, the second coupling mechanism R2 has a tubular positioning member 1
In 01, the support frames 65, 65 are made to be in a state of being aligned with each other, and the engagement piece 99 on one side is pulled by the operation of the arm 100 on the other side to be held in the engagement state. As shown in FIGS. 23 and 24, the third
In the coupling mechanism R3, the positioning pin 102 on one sliding rail 29 side and the engaging body 103 on the other sliding rail 29 side are connected.
In the state of being engaged in the engaging hole of No. 1, the buckle type is configured to pull the engaging piece 99 on one side by the operation of the arm 100 on the other side to hold the engaging piece 99 in the engaged state. As shown, the fourth connecting mechanism R4 is swingably supported around a lateral axis 104 with respect to the split surface of one split seedling placing table, and is swingable by a lever 105, and a swing piece 106. When the closing operation of 106 is performed, the holding piece 107 that engages with the swing piece 106 and the other split seedling placement table of the other split seedling placement table that engages with the swing piece 106 to prevent movement of each split seedling placement table in the separating direction. It is composed of an engagement piece 108 formed on the divided surface.

As shown in FIG. 8, the connecting rod B is a U-shaped lock that engages with the vertical rod 112 of the support plate 111 connected and fixed in a posture extending rearward from the rear end of the one chain case 15. The piece is provided at one end of the connecting rod body, and is inserted into a notch (not shown) of the connecting plate 114 that is fixedly connected to the rear end of the other chain case 15 in a posture extending rearward. A pressing piece 116 for pressing the connecting plate 114 by operating the lever 115 is provided at the other end. As shown in FIG. 9, the fifth connecting mechanism R5 is of a buckle type in which the engagement piece 99 on the side of the protective frame 83 is pulled by the operation of the arm 100 on the side of the regulating arm 57 and held in the engaged state. Are provided on the left and right.

As shown in FIGS. 18 and 19, in the hydraulic cylinder 8, the cylinder portion 8A is swingable through a shaft body 118 which is in a horizontal posture with respect to a frame 117 on the rear surface of the transmission case 6 of the traveling machine body 3. The suspension rod 119 is supported in a vertical position such that the piston rod 8B at its upper position is vertically expanded and contracted, and the suspension spring 119 that contacts the tip of the piston rod 8B is externally fitted to the piston rod 8B, and is a stopper. An operating member 121, which is disposed so as to contact the ring 123 and is displaceable in the axial direction with respect to the piston rod 8B so as to receive the force from the suspension spring 119, is provided laterally from the top link 9T. It is connected to the operating shaft 122. Further, a protection tube 124 covering the suspension spring 119 is provided at the tip of the piston rod 8B.

In this lifting drive system, the hydraulic cylinder 9 is extended until the link mechanism 9 reaches the most raised position, and the lock member 125 that can be mounted between the upper end edge of the cylinder portion 9A and the stopper ring 123 is used. This locking member 125 is configured so as to restrict the descending operation of the seedling planting device.
, The contraction operation of the piston rod 8B is impossible, and the weight of the seedling planting apparatus A acts on the suspension spring 119, so that the buffering function of the suspension spring 119 is not impaired. Disable the lowering operation. The lock member 125 is formed in a U-shaped cross section so as to hold the piston rod 8B and has a handle 125A.

With this configuration, when the seedling planting device A is stored, the hydraulic cylinder 9 is extended to operate the link mechanism 9 to the highest position so that the seedling planting device A is separated from the ground. The worker attaches the lock member 125 from the traveling machine body 3 side. The reason for raising the seedling planting apparatus A to the maximum in this way is to avoid the phenomenon that the leveling float 18 or the like on the lower surface of the seedling planting apparatus A comes into contact with the ground during the storage operation to prevent the storage operation. When the member 125 cannot be attached, the seedling planting apparatus A does not move up to the height because the seedling planting apparatus A performs the retracting operation. Therefore, perform the raising operation of the seedling planting apparatus A again to make sure. Lock member 12
Put on 5.

Next, as shown in FIG. 27, the seedling placing table 13 is fed to the left end position by the driving force of the lateral feeding mechanism and stopped, and the seedling picking amount adjusting lever 35 is set and held at the maximum position to set the planting depth. The adjustment lever 27 is set and held at the shallowest position, and the operation shaft 54 of the extension rod 52 of the right return spring 53 is artificially operated to separate the inner end of the extension rod 52 from the engagement rod 50. After that, the first connecting mechanism R1 is separated and the second connecting mechanism R2 is separated, and the clutch release lever 75 is released.
To the release position to hold the operating position (holding structure not described in detail), and to operate the lock release lever 94 to the release position to hold the operating position (holding structure not described in detail). ), The third connecting mechanism R3 is separated, the connecting rod B is removed, and the grooving device 22 provided on the left side of the center float 18C is removed from the center float 18C (the attaching / detaching structure is not described in detail).

When the seedling-picking-amount adjusting lever 35 is set and held at the most position, the slide rail 29 is set to the lowermost position, and the connecting mechanism 38 of the seedling-picking amount adjusting shaft 31 to be performed next is operated. The seedling collecting amount adjusting shaft 31 on the side not provided with the seedling collecting amount adjusting lever 31 due to the separation at the part is the divided seedling placing table 13R.
Although it rotates depending on the weight of the sliding rail 29, the seedling collecting amount adjusting system is configured such that when the seedling collecting amount adjusting lever 35 is set to the maximum position, the sliding rail 29 and the supporting system of the sliding rail 29 reach a position extremely close to each other. Even if the seedling removal amount adjusting shaft 31 is separated at the portion of the connecting mechanism 38, the seedling removing amount adjusting shaft 38 hardly contacts with the sliding rail 29 so as to contact the support system. When the 31 are connected, the rotational postures of the shafts 31, 31 are made to coincide with each other without performing a special operation. Also, the planting depth adjustment lever 2
When 7 is set and held at the shallowest position, the ground leveling float 18 is set at the position displaced to the lowest position, and the planting depth is adjusted by separating the planting depth adjusting shaft 24 at the site of the connecting mechanism 37. Although the planting depth adjusting shaft 24 on the side not provided with the adjusting lever 27 pivots downward due to the weight of the ground leveling float 18, in this planting depth adjusting system, as shown in FIG.
As shown in (b), a stopper 126 is fixedly installed on the planting depth adjusting shaft 24 on the side where the planting depth adjusting lever 27 is not provided, and when the shaft 24 rotates to a posture corresponding to the shallowest position. Is configured such that the stopper 126 reaches a position extremely close to the lower surface of the chain case 15, and the planting depth adjusting shaft 24 almost rotates even if the stopper 126 is separated at a portion of the connecting mechanism 38 of the planting depth adjusting shaft 24. Without figure 4
As shown in (b), the stopper 126 comes into contact with the lower surface of the chain case 15, so that the planting depth adjusting shaft 24
No special operation is required when connecting the shafts 24,
The rotation postures of 24 are matched.

The extension rod 52 of the return spring 53 on the right side
The operation of manually operating the operation shaft 54 to separate it from the engaging rod 50 is for facilitating an artificial movement operation of the right divided seedling table 13R to be performed later, and the clutch release lever 75 is released. When operated to the position, as shown in FIG. 14B, the shift member 70 and the occlusal member 71 are completely separated from each other, and the lock release lever 75 can be operated without interfering with the later rotational operations of the divided products AL and AR. When operated to the release position, as shown in FIG. 16B, the lock member 92 is separated from the engagement member 90, and the later-described operation of rotating the divided products AL and AR is enabled.

Further, since the center float 18C is supported by the right divided product AR and the hopper 19 of the fertilizer application is provided for each of the divided products AL and AR for four rows, the center float 18C is provided from the left divided product AL side. 22 on the left side of
The system for supplying fertilizer to the center float 18C is separated, that is, the grooving device 22 on the left side of the center float 18C is connected to the center float 18C.
The storage operation is possible by separating from.

Next, as shown in FIG. 28, 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 29. (Not shown) to prevent (in this state, the distance between the left and right split seedling placing bases 13R and 13L reaches about 30 cm). Thereafter, the left and right rotating members 85, 85, the pair of wires 89, by rotating the outer end of the divided seedling placing table of one of the divided objects toward the front side of the traveling machine body 3 by a manual operation. By the force from 89, the first axis X1, X
When the swinging end portions of the left and right frame members 60, 60 rotate around 1 toward the rear of the traveling machine body 3, the swinging end portions move toward the center side of the traveling machine body 3 in the left-right direction. At the same time, the brackets 63, 6 around the second axis X2, X2
3 is supported by the main sprocket 84, the driven sprocket 86, and the chain 87 at a speed twice as fast as the rotation speed of the frame members 60, 60.
As a result, the frame members 60, 60 rotate 90 degrees with respect to the main frame 56 in the direction opposite to the direction in which 0, 60 rotate, that is, the left and right outer ends rotate forward of the traveling machine body 3. The divided objects AL and AR rotate 180 degrees with respect to the frame members 60 and 60.

Further, when turning to this storage posture, as shown in FIG. 29, 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 the 13L and 13R rotate at positions separated from each other, it is possible to rotate while avoiding contact between the respective corner portions 13E and 13E, and when the rotation is completed, the storage posture is reached as shown in FIG. . When this storage posture is reached, the connecting rod B removed as described above is engaged with the pin 127 formed on the left division AL as shown in FIGS. , The pinching piece 116 is engaged with the notch (not shown) of the connecting plate formed in the right divided part AR, and the pinching piece 116 is operated in the pinching direction,
By connecting the left and right fifth connecting mechanisms R5, the left and right divided objects AL and AR are prevented from rotating in the separating direction, and the storing operation is completed.

In this retracted posture, the left and right split seedling platforms 13L and 13R are mounted on the slide rails 29 and 29, respectively, and the traveling body 3 is moved.
At a position close to the side of, the upper edges reach a posture in which the upper edges are parallel to each other in a close state, so that the weight of the whole seedling planting apparatus A is moved to the side of the traveling machine body 3 and the weight balance of the entire rice transplanter is improved, The size of the seedling planting apparatus A in the lateral direction is reduced, and further, in this storage posture, the frame members 60, 60 rotate around the first axis X1 in the inclined posture, as shown in FIG. As a result of raising the rear sides of the left and right divided objects AL and AR upward with respect to the traveling machine body 3, the apparent front-back dimension of the seedling planting device A is reduced in plan view, and at the same time, the center of gravity of the seedling planting device A is reduced. Move to the traveling body side,
Moreover, even if the front part of the machine body is lifted up while driving, the seedling planting device A
The rear end side makes it difficult to contact the ground surface, and the split seedling placement stands 13L, 13R are erected by the rotation of the split objects AL, AR around the second axis X2, as shown in FIG. As a result of being switched to the posture (the posture in which the front end of the leveling float 18 is lifted), the lateral dimension of the seedling planting apparatus A is further reduced.

When the seedling planting apparatus A in this retracted posture is restored to the working posture, the lock release lever 94 is restored to the locked position, the left and right fifth connecting mechanisms R5 are separated, and the connecting rod is connected. When B is removed and the left and right divided objects AL and AR are rotated in the restoring direction, the left and right engaging members 90 and the left and right locking members 92 and 92 reach the engaged state at the same time, and the spring 93 automatically urges them. It will reach a locked state. Further, the connecting rod B is arranged between the support plates 111 provided at the rear ends of the chain cases 15 and 15 at the positions sandwiching the dividing surface and the connecting plate 114, and the third connecting mechanism R3 is connected and operated to separate them. Center groove 18 for grooving device 22
C, the clutch release lever 75 is restored to the engaged position, and the bite claw 70A and the bite member 71 of the shift member 70
It is confirmed that the occlusal nails 71A are occluded in an appropriate posture, and if proper occlusal is not performed, the occlusal claws 71A are occluded by performing an appropriate operation, and further, the right divided seedling placing table 1
After moving 3R to the side of the left split seedling placing table 13L, the fourth connecting mechanism R4 is operated to be connected to the second connecting mechanism R2.
To connect the first connecting mechanism R1 and to engage the extension rod 52 of the return spring 53 on the right side in the separated state with the engaging rod 50 to bring the seedling planting apparatus A into the working posture. By restoring and removing the lock member 125 from the hydraulic cylinder 8, a workable state is reached.

As described above, when the seedling planting apparatus A is switched to the retracted posture, the left and right lock members 92, 92 are simultaneously released by operating the single lock release lever 94 to the unlocked position. The time and effort required for this switching are reduced and the left and right divided objects AL, A are used for the restoration operation.
By operating R to the position in the restoring direction, the left and right engaging members 9
0 and the left and right lock members 92, 92 reach the engaged state at the same time, and automatically reach the locked state by the urging force of the spring 93. Even when the bite claw 70A of the shift member 70 of the clutch mechanism and the bite claw 71A of the bite member 71 are occluded, the lock member 9 supported by the main frame 56 is used.
Since the intermediate shaft 69 is supported through the intermediate member 96 with respect to the engaging members 90, 90 that have reached the engaging state with the second and second members 92, 92,
The deviation between the shaft center of the intermediate shaft 69 and the shaft centers of the output shafts 67, 67 of the bevel case 66 supported on the main frame 56 side can be reduced to facilitate the clutch mechanism coupling operation. There is.

[Other Embodiments] In addition to the above embodiments, the present invention may be provided with, for example, a wire for operating the left and right lock members at the same time, and the left and right lock members are electrically operated simultaneously. It is also possible. It is also possible to provide a clutch between the output shaft for transmitting the power from the traveling machine body to the branch portion and the branch portion as a separation permitting means.

Further, according to the present invention, if the seedling planting device is divided and the outer end portion of the divided seedling placing table is switched to the storing posture in which the outer end portion is directed to the front side of the traveling machine body, the structure for storing is It may be different from the above-mentioned embodiment, and may 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 side view showing a planting depth control system and a seedling removal amount control system.

FIG. 3 is a plan view showing a planting depth control system and a seedling removal amount control system.

[FIG. 4] (a) is a side view showing the arrangement of stoppers of the planting depth adjusting shaft (b) is a side view showing the contact state of the stoppers of the planting depth adjusting shaft.

FIG. 5 is a front view showing a member linked to the intermediate frame.

FIG. 6A is a plan view showing the arrangement of the rolling springs in the working posture, and FIG. 6B is a plan view showing the arrangement of the rolling springs in the stored posture.

FIG. 7 is a side view showing the postures of the first axis and the second axis.

FIG. 8 is a plan view of the transmission system of the seedling planting device in a working posture.

FIG. 9 is a plan view of the transmission system of the seedling planting device in the retracted posture.

FIG. 10 is a rear view of the main frame and the frame member with partial cutaways.

FIG. 11 is a plan view of a work operation storing operation system.

FIG. 12 is a plan view of a storage operation system in a storage posture.

FIG. 13 is a sectional view of a tube covering a chain.

FIG. 14A is a rear view of the clutch mechanism in an engaged state. (B) is a rear view of the clutch mechanism in the disengaged state

FIG. 15 is a plan view of an operating system of a lock member.

FIG. 16A is a side view of a lock member in a locked posture. (B) is a side view of the lock member in the locked state

FIG. 17 is a side view of an operating system for the clutch mechanism and the lock member.

FIG. 18 is a partially cutaway side view of the hydraulic cylinder.

FIG. 19 is a perspective view of a lock member.

FIG. 20 is a front view of the first lock mechanism.

FIG. 21 is a vertical sectional side view of the first lock mechanism.

FIG. 22 is a partially cutaway plan view of the second lock mechanism.

FIG. 23 is a rear cross-sectional view of the third lock mechanism in vertical section.

FIG. 24 is a vertical sectional side view of a third lock mechanism.

FIG. 25 is a perspective view of a fourth lock mechanism.

FIG. 26 is a front view of a fourth lock mechanism.

FIG. 27 is a plan view of the rice transplanter with the seedling stand placed at the end of the sliding rail.

FIG. 28 is a plan view of the rice transplanter with the seedling placing table divided.

FIG. 29 is a plan view of the rice transplanter in which the seedling planting device is divided and rotated.

FIG. 30 is a plan view of the rice transplanter with the seedling planting device set in the retracted posture.

FIG. 31 is a rear view of the seedling planting device in a stored state

FIG. 32 is a side view of the seedling planting device in the retracted posture.

FIG. 33 (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 aircraft 12A output shaft 13 seedling stand 56 members 66 Branch 90 Engagement member 92 Lock member A seedling planting equipment AL, AR division W seedling

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5322-2 (JP, A) JP-A-61-191422 (JP, A) Fukukaihei 6-5401 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) A01C 11/02 A01B 73/06

Claims (2)

(57) [Claims] 1. A seedling (W) placed on a seedling stand (13)
A seedling planting device (A) which is cut out by a planting mechanism and is planted in a field is vertically connected to a rear end of a traveling body (3), the seedling planting device (A) Is configured to be freely split at an intermediate position in the left-right direction, and the seedling planting device (A) splits (AL),
By changing the posture of the (AR) around the vertical axis, the lateral outer ends of the divisions (AL) and (AR) are moved to the traveling body (3).
Of the traveling body side member (56) that supports the divided objects (AL) and (AR) so that the attitude can be changed, and the divided object (A)
L) and (AR), engaging members (90) and (9)
0) is provided with lock members (92) and (92) for holding the divided products (AL) and (AR) in a working posture, and the lock members (92) and (92) can be simultaneously operated. The left and right lock members (92) and (92) are connected and fixed to a single shaft body (91) which is swingably supported by the member (56) on the traveling machine body side in a horizontal posture, and the traveling machine body (91) Output shaft (1 driven by power from 3)
2A) is provided to the member (56) on the traveling body side together.
The power from the output shaft (12A) is distributed to the branching unit (66).
Divide at and tell the divided objects (AL) and (AR) respectively
The transmission shafts (69) and (69) are connected to the left and right engaging members (9
0) and (90), and the branch portion (66) and the transmission shaft (6
9), separate the transmission system between (69), or
The transmission system from the output shaft (12A) to the branch part (66)
Switching to the storage posture of the seedling planting device (A) by separating
Rice transplanter equipped with a separation permitting device that allows 2. The rice transplanter according to claim 1, further comprising interlocking operation means for interlocking each of the divided objects (AL) and (AR) to switch between a storage posture and a work posture.