JP2580575Y2 - Riding rice transplanter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a riding type rice transplanter provided with a spare seedling stand on a traveling machine body.

[0002]

2. Description of the Related Art Conventionally, when planting seedlings in a field using a riding type rice transplanter, a seedling plant is mounted on a rear portion of the traveling machine so as to be able to move up and down via a link mechanism, and a lower portion of the seedling plant is provided with
Planting mechanisms are provided at appropriate intervals on the left and right in the traveling direction, and the seedling mat on the seedling mounting table arranged in an inclined manner in the seedling planting apparatus is divided by the number of plants as appropriate by the planting mechanism that rotates vertically as the rice transplanter advances. The provision of a spare seedling stand on which a large number of spare seedling mats are placed on the traveling machine is also known, for example, in the prior art.
No. 30893.

[0003] In this prior art, when the seedling plant is raised, the seedling mat supply port in the spare seedling stand and the seedling mat receiving port at the upper end of the seedling stand in the seedling plant- ing apparatus are close to each other. It is disclosed to make up.

[0004]

However, in the above-mentioned prior art, the upper end of the seedling mounting table approaches the seedling mat supply port of the spare seedling mounting table simply by the upward rotation of the seedling plant. In addition, the geometrical relations such as the size and the attachment position of the link mechanism for raising and lowering the seedling planting apparatus and the height of the link mechanism are uniquely determined.

In this type of seedling plant, the pitching posture of the seedling plant is fixed in order to keep the seedling posture constant during the planting operation irrespective of the fluctuation of the height of the seedling plant with respect to the traveling machine. In order not to fluctuate, since the link mechanism often uses a parallel link mechanism, when raising the seedling planting device toward the spare seedling stand, since the inclination posture of the seedling mounting table does not change, for example, Even if the upper end of the seedling table is brought close to the spare seedling table, the seedling mat will be supplied to the steeply inclined seedling table when the seedlings are spliced, and the seedling mat that slides down the upper surface of the seedling table will be at the lower end of the seedling table. There is a problem that the impact when stopping on the side becomes large and the seedling mat collapses.

Accordingly, the present invention aims to pursue the convenience of this kind of seedling splicing operation and to efficiently perform the seedling planting operation so that the seedling mat to be added is not broken.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is to connect a seedling plant to a rear part of a traveling body having a control seat via a hydraulic actuator so as to be able to move up and down.
In the seedling plant, a seedling mounting table is arranged in an inclined manner so that an upper end is located toward a rear portion of the traveling machine body. In a riding type rice transplanter that is rotatably provided so as to approach the seedling, during seedling joining operation, control is performed so that the seedling placement device is raised so that the seedling mounting table is substantially at the same height as the spare seedling table. On the other hand, the drive means provided in the seedling planting apparatus is provided with control means for controlling so as to change the inclination angle of the seedling table in a decreasing direction so that the upper end of the seedling table approaches the spare seedling table. It was made.

[0008]

With the above construction, during the seedling connection operation, the spare seedling stand is rotated so as to approach the upper end of the seedling stand, and the seedling placement device is moved to the spare seedling stand. Raise to approximately the same height. At this time, the drive means provided in the seedling planting apparatus controls the inclination angle of the seedling mounting table to be changed in the decreasing direction so that the upper end of the seedling mounting table approaches the spare seedling mounting. Since the height of the seedling stand is almost the same, it is easy to transfer the seedling mat on the spare seedling stand to the seedling stand, and the seedling mat placed on the seedling stand suddenly moves toward the lower end of the seedling stand. Since the seedling mat does not slide down, the seedling mat can be prevented from collapsing.

Therefore, according to the present invention, there is an effect that the seedling joining operation is extremely convenient, and the seedling mating to be added is not broken, so that the seedling planting operation can be performed efficiently.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment applied to a six-row planting planting machine will be described below. In the drawing, reference numeral 1 denotes a traveling body, and the traveling body 1 comprises a body frame 2 and front wheels 3, 3 attached to its front side. And a rear wheel 5 attached to the rear side. A steering seat 6 and a steering handle 7 are provided on the upper surface of the vehicle body frame 2, and the driving force of the engine 8 on the front upper surface of the vehicle body frame 2 is transmitted to the transmission case 9. Rear wheel 5 via the internal speed change mechanism
Is driven.

A parallel link mechanism 1 is provided at the rear of the traveling body 1.
The seedling transplanter 10 which can be freely moved up and down through 1 is provided with a central transmission case 12 and, on both left and right sides of the central transmission case 12, attached at appropriate intervals via connection pipes having transmission shafts inserted therein. Transmission cases 14 and 14 and a laterally reciprocally movable seedling mounting table 1 that is inclined so that the upper end approaches the rear part of the traveling body.
The planting mechanism 16 for raising and lowering the planting claws between the seedling outlet at the lower end of the seedling mounting table 15 and the field scene 17 is provided on the left and right sides of the rear of the right and left planting transmission case 14. .

Further, the parallel link mechanism 11 is driven up and down by a hydraulic cylinder 13 as a hydraulic actuator for attaching the parallel link mechanism 11 to the traveling machine body 1 side. As shown in FIG. 3, the parallel link mechanism 11 includes a top link 18 and a pair of left and right lower links 19, 19, and a base end of the top link 18 is connected to a portal frame standing on the body frame 2 by a pin pivot. The portal-type support 11a to which the top link 18 and the lower links 19, 19 are attached and to which the respective tips are attached is rotatably connected to the right and left via a rolling shaft 60 of a hitch portion in the seedling-planting device 10, so that the seedling is planted. The apparatus 10 is provided with the traveling machine 1 around the rolling shaft 60 so that the floats 20, 20, 20 disposed on the lower surfaces of the central transmission case 12 and the planted transmission cases 14, 14 slide on the field scene. It is a configuration that can be rotated up and down (rolling) right and left.

A guide portion 22 protruding from both right and left planting transmission cases 14, 14 is provided with a rail 23 at a lower end of the lower surface of the seedling mounting table 15.
The guide rail 24 on the upper rear side of the seedling mounting table 15 is slidably fitted to the transmission cases 14, 14.
Are slidably fitted respectively to a pair of left and right support columns 25 projecting from the upper end. Also, as shown in FIG. 3, the portal 11a and the seedling plant 10
And are connected so as to be pivotable. And the top link 18 and the gate-shaped support 1 in the parallel link mechanism 11
1a, the piston rod of an actuator 62 such as a hydraulic cylinder as a driving means mounted as a driving means contracts, so that the seedling plant 10 and the seedling table 15 around the horizontal pivot 61 are tilted forward. It can be pivoted to decrease.

A seedling mat 26 formed by germinating and growing paddy seeds sown on floor soil in a seedling box (not shown) is taken out of the seedling box and placed on a flat-plate-shaped seedling collecting plate 27 shown in FIG. Supplied. As shown in FIGS. 1 and 2, the seedling mat 26 with the seedling collecting plate 27 brought on the ridge is in a state where its longitudinal direction is orthogonal to the traveling direction of the traveling machine 1. It is mounted on spare seedling stands 28, 28 arranged on both left and right sides.

Each spare seedling stand 28 comprises a front fixed stand 30 attached to a fixed support 29 and a turntable 32 attached to a horizontally rotatable support 31. Each turntable 32 is viewed in plan. 2, as shown in FIG. 2, it is arranged between the rear end of the front fixed base 30 and the upper end of the seedling mounting base 15. A vertically intermediate portion of the guide cylinder 33 fitted on the support column 31 is supported on a side surface of the traveling machine body 1 via a bracket 34. In the gear box 35 at the lower end of the support 31, a drive motor 37 and a transmission gear mechanism 36 that can rotate forward and reverse are built in, and the support 31 is horizontally rotated 90 degrees in the directions of arrows A and B in FIGS. 2 and 6. When the turntable 32 is turned to the state shown by the alternate long and short dash line in FIG. 2, the seedling mat 26 placed on each turntable 32 is moved.
Of the seedling mat on the seedling mounting table 15
Substantially along the longitudinal direction.

As shown in FIG. 5 and FIG.
At the lower end of the gear box 35,
Are fixed to each other so as to be integrally rotated, and a first shaft is also arranged at an appropriate center angle in the gear box 35.
Between the limit switch 70 and the second limit switch 71, the rotation support 31 rotates forward and backward by an angle 90. A tilt switch 75 for the actuator 62 for changing the tilt angle of the seedling mounting table 15 is disposed between the first limit switch 70 and the second limit switch 71.

The spare seedling turn switch 38 for operating the turntable 32 is located on the side of the turntable 32 and close to the side of the control seat 6 (inside the traveling body 1). (See FIGS. 2 and 6). FIG. 9 shows a rotation drive circuit for the rotation table 32 and the seedling table 15. The spare seedling rotation switch 38 has a contact T on the seedling splicing side and a contact U on the planting work side. To the electronic controller 72 such as a microcomputer, and the first limit switch 70 and the second
Relay circuit (drive circuit) via limit switch 71
It is connected to the drive motor 37 via 73. The first limit switch 70 and the second limit switch 71
OFF when the protruding piece 39 is in contact, ON when it is separated
It is in a state. In the present embodiment, since the turntables 32 are arranged on both left and right sides of the traveling machine body 1, a pair of right and left turn columns 31 and gear boxes 35 are provided.

An automatic switch 74 for controlling the pitching of the seedling plant 10 is input to a controller 72 via a forward tilt switch 75, and is connected to the actuator 62 via a relay circuit (drive circuit) 76 from the controller 72. I have. With the pitching manual switch 77 input to the controller 72, when the pitching manual switch 77
The actuator 62 is operated in a direction in which the inclination angle of the seedling mounting 15 is decreased, and when the inclination angle of the seedling mounting table 15 is increased when the inclination angle of the seedling mounting table 15 is increased, the actuator 62 is operated.

On the other hand, the raising / lowering operation of the seedling planting apparatus 10 has the following configuration. That is, the power from the engine 8 is transmitted to the transmission mechanism in the transmission case 9 via the belt-type main clutch 40 in FIG.
It is transmitted to the seedling plant 10 via a PTO shaft (not shown). The main transmission lever 41 in FIG. 7 is rotated, and the arm 45 attached to the operation shaft 44 of the transmission case 9 via the link 43 together with the interlocking shaft 42 is rotated.
(Low speed) and N (neutral position and seedling splicing position). When the foot petal 46 is depressed, the dedent mechanism 47 is released, so that the main transmission lever 41 rotates to the L (low speed) and N (neutral) sides by the force of the spring 48, while the main clutch 40 is disengaged by the wire 49.

The reference numeral 51 shown in FIG.
3 is turned to the left in FIG. 8 by a hydraulic operating lever that raises and lowers the seedling-planting device 10.
0 is lowered to the seedling working position where it touches the field scene 17 and is turned rightward in FIG. 8 to raise the seedling plant 10. With this configuration, during the seedling planting operation, when the seedling mat is consumed and shortened by the seedling splicing sensor 66 (see FIG. 9) disposed on the seedling mat mounting portion 15 a of the seedling mounting table 15,
The operator turns the main transmission lever 41 to the neutral position or the seedling splicing position. As a result, the interlocking shaft 42 is rotated in the direction of arrow C in FIG. 8, and the hydraulic operating lever 51 is moved from the lowered position in FIG. To forcibly rotate. At this time, the rotating arm 52 is pushed up by an auxiliary arm 53 that rotates integrally with the pressing lever 50, and the trochanter 54 fixed to the rotating arm 52 moves the dent plate 55 fixed to the hydraulic operating lever 51. The hydraulic operation lever 51 is held at a predetermined raised position, being disengaged from the engagement concave groove.

On the other hand, when the automatic switch 74 is turned on and the spare seedling turning switch 38 is connected to the contact T in order to horizontally turn the turning table 32 in the spare seedling stand 28, the driving motor 37 is turned on. Then, the turntable 32 is turned in the direction of arrow A. When the turntable 32 turns 90 degrees, the first
When the relay circuit 73 is turned off by the limit switch 70 or the switch 38 is turned off, the drive motor 37 is stopped.
Is stopped, and the turntable 32 is disposed in a left-right longitudinal shape so as to face the seedling mounting table 15 (see the state of the dashed line in FIG. 2). Stand 1
5 is substantially along the longitudinal direction of the seedling mat placing portion 15a. When the forward tilt switch 75 is turned on by contacting the protrusion 39 during the rotation of the turntable 32, the relay circuit 7 is turned on.
Actuator 62 operates via 6 to rotate so that the inclination angle of seedling mounting table 15 decreases. In addition, as described above, during the seedling joining operation, the operator must use the hydraulic cylinder 13.
Is operated to raise the seedling-planting device 10,
When the upper end of the seedling rest 15 rises to substantially the same height as the spare seedling stand 28, the sensor 56 is provided at the rear end of the spare seedling stand 28.
And actuate an actuator 57 such as a hydraulic cylinder attached to the hydraulic operation lever 51. This allows
Since the hydraulic operation lever 51 automatically returns to N (neutral position), the raising of the seedling plant 10 is stopped (see the dashed line in FIG. 8). In this state, the actuator 57 returns to the free state (non-operating state).

In this state, if the operator drops the seedling mat 26 from the spare seedling stand 28 from the upper end of the seedling placing stand 15, the worker can execute the seedling joining operation. As described above, the height of the spare seedling stand 28 and the upper end of the seedling stand in the seedling planting apparatus 10 are substantially the same, and both are located at positions close to each other, and the inclination angle of the seedling stand 15 is nearly horizontal. Since the number of the seedling mats has decreased, the operation of moving the seedling mat 26 from the spare seedling stand 28 to the seedling mounting stand 15 can be performed smoothly, and the seedling mat 26 does not slip down suddenly and there is no inconvenience such as collapse.

When the seedling joining operation is completed, the hydraulic operation lever 51 may be returned to the lowered position, and the seedling planting operation may be resumed. During traveling on a road or the like, the seedling planting device 10 is raised to a position higher than the seedling splicing work position. In this case, the sensor 56 is switched to a non-operating state, and the hydraulic operating lever 51 is turned on.
To the raised position. When the wire 58 is raised to a predetermined height, the wire 58 connected to the parallel link mechanism 11 and the hydraulic operating lever 51 pulls the hydraulic operating lever 51 to return to the neutral position.

When the seedling connection operation is completed, the spare nursery stand rotation switch 38 is connected to the contact U,
The drive motor 37 rotates in the reverse direction by rotating the turntable 32 in the arrow B direction. When the turntable 32 turns 90 degrees in the same manner as described above, when the relay circuit 73 is turned off by the first limit switch 70 or the switch 38 is turned off, the drive motor 37 is stopped, and the turntable 32 is turned off. 32 is oriented along the longitudinal direction of the traveling body 1.

The spare seedling rotation switch 38 may be provided on the traveling machine 1 between the inner surface of the rotation table 32 and the control seat 6. As described above, the spare seedling table rotation switch 38 is provided on the side surface of the rotation table 32 and close to the side of the control seat 6 (inside the traveling body 1), or
If it is provided on the traveling body 1 or the like between the inner side surface and the control seat 6, the spare seedling rotation switch 38 will be located at a place where it does not hinder the operation when the rotation of the rotation table 32. The operator can easily execute the seedling splicing operation and the operation of starting and stopping the rotation of the turntable 32.

As shown in FIG. 10, the contacts of the spare seedling rotation switch 38 are set as R contact (right contact), L contact (left contact), and CO contact (both simultaneous contacts). When inserted into the R contact, only the right turntable 32 can rotate, when inserted into the L contact, only the left turntable 32 can rotate, and when inserted into the CO contact, the left and right turntables 32, 32 can be rotated. Drive motors 37, 37 so that
May be configured to be controlled by the controller 72 in order to operate.

Further, if the first limit switch 70 and the second limit switch 71 for controlling the rotation of the left and right turntables 32, 32 are arranged on the respective turn columns 31, 31, each turn can be performed. Even if the rotation timings of the platforms 32, 32 are shifted, a predetermined position (the traveling body 1
(The position along the direction of travel of the seedling and the position along the left-right direction of the seedling mounting table 15).

A rotation sensor (not shown) provided in the gear box 35 is brought into contact with a projection 39 attached to the rotation column 31 to detect the rotation position of the rotation table 32. Alternatively, instead of this, the turntables 32, 3 on both the left and right sides may be used.
When 2 rotates so as to face the upper end side of the seedling mounting table 15, a detection signal is output by a sensor provided at the facing portion,
The actuator 62 for tilting the seedling mounting table 15 forward may be operated.

Further, as shown in FIG. 1, the auxiliary support frames 59, 59 adjacent to the front fixed base 30 and the rotary base 32 in the spare seedling base 28 are flipped up via a link or the like to rotate. When the operator gets on and off from the side of the traveling machine 1, the auxiliary frames 59 are flipped up and folded so that the operator can easily enter the control seat 6. Then, the upper surfaces of the auxiliary frames 59, 59 are fixed to the front fixed table 30 and the rotating table 32.
When it is stretched back to its original position so as to be flush with the upper surface of the front fixed base 3, it is held in position by the stopper.
0 to the turntable 32 continuously from the seedling mat 26 (seedling board 2).
7) can be moved.

[Brief description of the drawings]

FIG. 1 is a side view of a riding type rice transplanter.

FIG. 2 is a plan view of a riding type rice transplanter.

FIG. 3 is a main part side view showing a tilting portion of the seedling mounting table.

FIG. 4 is a perspective view of a seedling mat and a seedling removing plate.

FIG. 5 is a side sectional view of a rotating portion of the spare seedling stand.

FIG. 6 is a schematic plan view of a spare seedling stand rotating unit.

FIG. 7 is an explanatory diagram of an operation of a main shift lever.

FIG. 8 is an operation explanatory view of a hydraulic operation lever.

FIG. 9 is a circuit block diagram of control.

FIG. 10 is a circuit block diagram of another control. .

[Description of Signs] 1 Traveling machine body 3, 5 wheels 6 Control seat 10 Seedling plant 15 Seedling table 15a Seedling mat placement section 16 Planting mechanism 11 Link mechanism 13 Hydraulic cylinder 15 Seedling stand 26 Seedling mat 27 Seedling plate 28 spare seedling stand 31 prop 32 turntable 37 drive motor 41 main transmission lever 42 interlocking shaft 51 hydraulic operating lever 56 sensor 62 actuator

Claims (1)

(57) [Scope of request for utility model registration] A seedling device is connected to a rear portion of a traveling body having a control seat so as to be able to move up and down via a hydraulic actuator, and the seedling device is arranged so that an upper end thereof is located toward a rear portion of the traveling body. In a riding type rice transplanter, a seedling mounting table is disposed in an inclined manner, and a spare seedling mounting provided on the traveling machine body is rotatably provided so as to approach the upper end of the seedling mounting table at least at the time of seedling joining work. During the splicing operation, the seedling placement device is controlled so as to be raised so that the seedling placement platform is substantially at the same height as the spare seedling placement platform. A control means for controlling the inclination angle of the seedling mounting table to decrease in a decreasing direction so as to approach the spare seedling mounting.