JPS5942819Y2 - Multi-row rice transplanter - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a multi-row rice transplanter.

In general, in a multi-row rice transplanter, especially a riding type, a seedling tray tilted to the seedling planting device is provided so that it can freely move back and forth in the left and right direction of the machine, and each seedling mat placed in parallel on the seedling tray is placed at the lower end. While feeding the seedlings vertically in the direction, the seedlings are divided into individual plants from each seedling mat at the lower end of the seedling stand by the seedling mechanism in the seedling device.
The rice transplanter is configured to plant seedlings at appropriate intervals as the rice transplanter moves forward.

The present invention detects when to add seedling mats for each seedling mat location, and in conjunction with this, automatically aligns the seedling stand horizontally with the spare seedling stand, and also connects the spare seedling stand to the seedling stand. The purpose of the present invention is to efficiently carry out rice transplanting work by reducing the operator's own operations during seedling splicing work by configuring the rice plant to be moved close to the upper end direction.

Below, to explain the embodiments of the drawings, 1
2 shows a fuselage having a pair of left and right front wheels 2 and two pairs of left and right rear wheels 3, and has an engine 4 and a control handle 5 on the upper surface of the front part, and a control seat 6 on the upper surface of the midway part. mission case 8 on the fuselage 1 from the output shaft 7 of
The power is transmitted through a belt to the transmission case 8, and the power is transmitted to the front wheels 2 and rear wheels 3 so that the aircraft 1 can run. A main clutch 10 is provided to cut off the power transmission to the case 8, and the clutch pedal 9 is provided with a spring-equipped hydraulic cylinder 11 to cut off the main clutch 10 using hydraulic pressure. A hydraulic pump 12 is provided which is constantly belt-transmitted independently of the main clutch 10.

Reference numeral 13 denotes a seedling planting device located at the rear of the machine body 1. The seedling planting device 13 includes a transmission case 15 having a vertically swinging type seedling planting mechanism 14 at the rear end, a float 16 attached to the lower surface of the transmission case 15, and Seedling stand 17 tilted so that the upper end approaches the aircraft body
The seedling stand 17 has its lower end connected to the transmission case 15.
A trochanter 21 at the upper end of an arm 20 erected from the YC transmission case 15 is reciprocated in the left and right directions with a low weight on the guide rail 18 for taking out seedlings attached to the top surface, and a rail 19 provided halfway on the back side of the guide rail 18. is configured to do so.

This seedling planting device 13 consists of a pair of upper and lower equal-length links 24 and 25, each of which is pivotally connected to a support 22 erected at the front end of the transmission case 15 and a hitch 23 attached to the rear end of the body 1. The parallel link mechanism 26 is connected to the fuselage 1 so as to be movable up and down by the vertical parallel link mechanism 26.
The seedling planting device 13 is configured to be raised and lowered by a hydraulic cylinder 27 installed between the seedling plant 6 and the hitch 23, and power is transmitted to the seedling planting device 13 from the mission case 8 on the fuselage 1 via a flexible shaft (not shown) or the like. It looks like this.

Reference numeral 28 denotes a spare seedling stand placed on a supporting stand 29 provided on the upper surface of the rear portion of the machine body 1, and 30 denotes an elevating and descending slope that is located below the spare seedling stand 28 and lifts up the spare seedling stand 28 by rising. At the upper part of the support column 22 at the front end of the seedling planting device 13, there is a parallel link mechanism 33 for raising and lowering the preliminary seedling stand, which is made up of a pair of upper and lower equal-length links 31 and 32, each of which has its base end pivoted thereon by a pin. The lifting ramp 80 is rotatably pin-mounted to the tip of the upper link 31 of the parallel link mechanism 33, and a hydraulic cylinder 34 for raising and lowering the preliminary seedling stand is installed between the pin and the body 1. Hitachi 2 attaches the pin 35 provided at the tip of the lower link 32 to the fuselage 1.
3. A tilting hydraulic cylinder 36 is placed between the pin 35 and the lifting/lowering ramp 30.
Mount it.

The flat link mechanism 33 for raising and lowering the preliminary seedling table has a quadrilateral shape that is congruent with the parallel link mechanism 26 for raising and lowering the seedling planting device 13, and the upper link 31 has a lower part at the upper limit position of the raising and lowering slope table 30. There is an adjustable screw-type lift stopper 37 that stops the lift when it comes into contact with the link 32. Also, the upper end of the link 38, which is pivotally connected with a pin between the upper and lower links 31 and 32, is When the tilting table 30 is tilted, an adjustable screw-type tilting stop or collar 89 is provided at a position close to the seedling table 17 of the seedling planting device 13 to restrict the tilting movement.

40 is a switching valve for performing seedling succession work, 41 is a seedling planting device 13
The vertical switching valves 40 for lifting and lowering the seedlings are shown, and the switching valve 40 for seedling splicing operation is connected to the hydraulic pump 12 in the normal state.
A circuit 42 from the lift switching valve 41 is connected to a circuit 43 to the lift switching valve 41, a circuit 44 from the lift switching valve 41 is connected to a circuit 45 to the lift hydraulic cylinder 27, and a circuit to the hydraulic cylinder 11 of the clutch pedal 9 is connected. 46, and a circuit 47 to the hydraulic cylinder 34, 36 for lifting and tilting the preliminary seedling stand.
However, due to the switching operation, the circuit 43 from the hydraulic pump 12 to the switching valve 40 and the circuit 45 to the hydraulic cylinder 27 are cut off, and the hydraulic pump 12 is connected to the circuit 46. 47.

Further, the lift switching valve 40 has a neutral position in which hydraulic pressure is cut in and out of the lift hydraulic cylinder 27 by a lever 40' attached near the operator's seat 6, and a raised position in which hydraulic pressure from the hydraulic pump 12 is sent to the hydraulic cylinder 21. , and a lowered position in which the hydraulic pressure of the hydraulic cylinder 27 is released into the oil tank.

Furthermore, the hydraulic cylinder 34 for raising and lowering the preliminary seedling table and the hydraulic cylinder 36 for tilting operate so that the hydraulic cylinder 34 for raising and lowering operates first, and the stopper 37 of the upper link 31 in the parallel link mechanism 33 comes into contact with the lower link 32. After that, the diameter of the lifting hydraulic cylinder 34 is configured to be larger than the diameter of the tilting hydraulic cylinder 36 so that the tilting hydraulic cylinder 36 operates, and the lifting hydraulic cylinder 34 is connected to the hydraulic circuit 47.
A check valve 49 and a throttle 50 are provided in parallel in the circuit 48 leading to the tilting hydraulic cylinder 36, so that the tilting hydraulic cylinder 36 moves backward before the lifting hydraulic cylinder 34.

Further, on the back side of each seedling pine placement portion 17' of the seedling placement table 17, holes 51 are bored at appropriate intervals in the lower part and the upper part along the vertical feeding direction. , 52, when the seedling mat 53 is in contact with the lower surface of the seedling mat 53, it is electrically turned off, and when it is not, it is turned on.

LS2 is provided (four locations each in this embodiment), and four pilot lamps P are provided on the operation display panel 5'.
L14 pilot lamps PL2 arranged in two rows above and below
and connect these as shown in Figure 5.

That is, each of the upper limit switches LS1 and the lamp PLt are connected in series and wired in parallel to the battery power source B, and LS1 is turned on at each seedling placement section.
While the corresponding PLl lights up individually,
Each of the lower limit switches LS2 and the corresponding lamp PL2 are connected in series and wired in parallel to the same battery power source B as described above, and the LS2 of each seedling placement section is connected separately from the display above. The configuration is such that when one of the LS2's turns on, the corresponding Pb0 lights up, and a PLa that lights up when any one of the LS2's turns on is provided on a seedling stand or the like.

MS is the main switch of this circuit, ML is a main pilot lamp that lights up when the main switch MS is turned on, and the upper and lower limit switches LS1 and LS2 are configured in parallel, and the seedling stand 17 is placed in the center position in the left and right direction. (Seedling stand 17
A center switch C8 is provided on the arm 20, etc., which turns on when the seedling table and the spare seedling stand 28 are aligned in the horizontal direction.
The center switch C8 is connected to the upper and lower limit switches L.
S1゜Connect in series with LS2, and when manual/automatic changeover switch SW1 is ON and LSI, LS2, and C8 are all ON, relay R is activated, and solenoid coil S
The CI is connected to ON, and this drives the solenoid coil SC1 to operate the switching valve 41 to raise and tilt the spare seedling stand 28 toward the seedling stand 17, while turning off the main clutch 10 and turning the machine off. A recovery switch R8 is provided in series with the solenoid coil SC1, and when the clutch pedal 9 is depressed, the recovery switch R8 is turned OFF, and the relay R is turned OFF. The solenoid coil SC1 can be turned off by holding the solenoid coil SC1.

In this configuration, during rice planting work, the seedling mat 53 is supplied onto the seedling platform 11, a spare seedling mat is placed on the preliminary seedling platform 28, and the seedling transplanting device 13 is operated by operating the switching valve 40 to the lowered position. By descending, the float 16
Since the machine 1 touches the ground on the field, in this state, by moving the machine 1 forward and driving the seedling planting device 13, the seedling mat on the seedling platform 17 is divided into individual plants by the seedling planting mechanism 14, and then placed in the field. Seedlings are planted sequentially on the surface.

During this rice planting work, turn on the main switch MS and the changeover switch SW1, and make sure that the length of the seedling mat 53 on the seedling stand 17 is long enough and that the upper and lower limit switches L
While SI and LS2 are in contact with the lower surface of the seedling pine, the lamps PLI and Pb0 on the operation panel 5' are off, and the driver continues the seedling planting work by moving the machine straight ahead while observing this.

Through this operation, each seedling mat 53 is consumed one after another and is vertically fed toward the lower end of the seedling stand 17, so that the upper end of the seedling mat 53 is pushed upwards by the □ cut switch LS! When it reaches the lower part, the distance at the top end 1 of the seedling tray at that point will be long enough to place a new seedling mat, and the display of "Seedling mat addition possible" at that point will be indicated by lighting up PLl. be able to.

Furthermore, the seedling mat becomes shorter and the lower limit switch LS
When it reaches below 2, LS2 turns ON and "seedling succession is necessary"
The display is shown by lighting Pb0.

In this way, if any one of the slot switches LS2 is ON and the corresponding LSl of the 53 seedling mats is ON, seedling splicing work is required, so the horizontally moving seedling platform 17 is used as a spare seedling platform. 28 (center position shown in Figure 2), the center switch C
8 is turned ON, the relay R is operated to drive the switching valve 41 via the solenoid coil SC1, and the hydraulic pump 12 is activated.
Since the hydraulic pressure supply from to the switching valve 40 and the private lodging from the hydraulic cylinder 27 to the oil tank are cut, from now on, the switching valve 4
0, the seedling platform 11 does not move up or down and is locked so that it cannot be moved up or down. On the other hand, the hydraulic pressure from the hydraulic pump 12 is sent to the hydraulic cylinder 11 that is linked to the clutch petal 9, and the hydraulic cylinder 11 is activated. The main clutch 10 is turned OFF by rotating in the same direction as the foot pedal.
The power transmission from the engine 4 to the transmission case 8 is cut off, the drive of the seedling planting device 13 and the movement of the machine body 1 are stopped, and the rice planting work is interrupted.

At the same time, hydraulic pressure from the hydraulic pump 12 is sent to the hydraulic cylinders 34 and 36 for raising and lowering the preliminary seedling stand, and the raising and lowering hydraulic cylinders 34 are first operated to protrude, and the lifting and lowering slope table 3
0 rises from the horizontal position, and on the way up, lifts the preliminary seedling stand 28 from the horizontal position 1\, and lifts the upper link 31
The stopper 37 of is raised at 1 when it comes into contact with the lower link 32.

Next, the tilting hydraulic cylinder 36 is operated to project, and the elevating and lowering ramp 30 is tilted by the casing that contacts the tilt stopper 39, and the preliminary seedling stand 28 on its upper surface approaches the seedling loading table 17, and the seedling loading table is closed. Since it is tilted so as to be approximately parallel to 11 and with the same horizontal direction, the spare seedling mat on the preliminary seedling stand 28 can be moved onto the seedling stand 17 by sliding it slightly, and the seedlings can be transferred. It is done.

When this seedling transfer is completed, by pushing and moving the clutch petal 9, the main clutch 10 is turned on and the seedling planting device 13 is turned on.
is activated and the machine body 1 moves forward, at the same time the recovery switch R8 is activated, the solenoid coil SC is turned OFF, the seedling splicing operation switching valve 41 is returned to its original position, and the hydraulic cylinder 34 is moved to lower the preliminary seedling stand 28. .36 works.

Additionally, when the lower part of the seedling mat 53 is floating above the seedling stand 17, the lower limit switch L S 2 of the relevant part is activated.
turns ON, and the corresponding lamp PL2 lights up. However, if the length of the seedling mat 53 is long enough, the upper limit switch LSI remains OFF, so the seedling stand 17
Even if the center switch C8 is turned on when the seedling stand reaches the center position, the relay R is not activated, so the main clutch 10 is automatically disengaged and the spare seedling stand does not move up unnecessarily.

In short, according to the present invention, a seedling pine detection device that operates independently is provided for each side-by-side seedling pine placement portion of the inclined seedling platform at appropriate intervals along the vertical feeding direction of the seedling pine. , Both the upper and lower seedling pine detection devices are ON.
By this, the necessary time for seedling succession is detected, and at this time, in conjunction with the lateral direction coincidence detection device for the seedling stand with respect to the spare seedling stand, the main clutch for driving the machine advancement and the seedling planting device is turned off.
The auxiliary seedling bed is automatically moved toward the upper end of the seedling stand when the main clutch is turned off, thereby reducing the movement of the auxiliary seedling mat. In addition, once the preliminary seedling transfer work is completed, the return of the preliminary seedling stand and the movement of the machine can be performed with a single operation, which greatly reduces the number of operations before and after seedling transfer, making rice transplanting work more efficient. have

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a side view of the rice transplanter, Fig. 2 is a rear plan view, Fig. 3 is an enlarged side view of the main parts of the seedling stand, Fig. 4 is a hydraulic circuit diagram, FIG. 5 is an electric circuit diagram, and FIG. 6 is an enlarged partially cutaway sectional view taken along the line Vl-VT in FIG. DESCRIPTION OF SYMBOLS 1... Body, 2, 3... Wheels, 13... Seedling planting device, 14... Seedling planting machine groove, 17... Seedling mounting stand, 28...
Spare seedling stand, 10... Main clutch, 34... Hydraulic cylinder for lifting, 36... Hydraulic cylinder for tilting, 41...
・Seedling switching valve, 9...clutch petal, LSI...
・Upper limit switch, L S2...Lower limit switch, C8...Center switch, R...Relay, SC1...Solenoid coil, R8...Recovery switch.

Claims (1)

[Scope of utility model registration request] A plurality of seedling mats can be placed in parallel on a seedling platform that can freely reciprocate from side to side in a seedling planting device, and the seedling platform has two mats spaced apart from each other at appropriate intervals along the vertical feeding direction of each of the seedling mats. A seedling pine detection device is provided for independently detecting seedlings, and a device is provided for detecting horizontal alignment of the seedling stand with respect to a spare seedling stand disposed on the machine side. A mechanism is provided to move the seedling pine closer to the other side, and when both the upper and lower seedling pine detection devices and the lateral direction coincidence detection device are both ON, the main clutch for driving the machine body and the seedling planting device are kept OFF, and the spare seedling stand is moved closer to the seedling stand. The multi-row rice transplanter is configured to be connected so as to be close to the upper end, and to restore the position of the preliminary seedling stand by turning on the main clutch.