JPH0328732Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a so-called multi-row riding riding rice transplanter that is equipped with a seedling planting device consisting of a plurality of seedling planting units on the traveling body. The clutch control lever that turns power transmission ON/OFF is OFF.
This invention relates to the structure of a clutch operating lever release device for returning a clutch operating lever to an ON state in response to a rotational operation of a control handle.

[Prior art] In a riding type rice transplanter for multi-row planting, a configuration in which power transmission is turned on and off for each of a plurality of seedling planting units is disclosed and publicly known in the prior art, such as Japanese Utility Model Publication No. 58-31451. .

In this way, power is transmitted to each seedling planting unit.
The purpose of turning it on and off is to eliminate the inconvenience of driving all the seedling planting units when planting seedlings on the edge of a field.

For example, when planting seedlings with an 8-row rice transplanter, the seedling planting device is used to plant the seedlings while the traveling machine is traveling almost straight, and when it comes to the edge of a ridge, the seedling planting device is raised and the direction of the traveling machine is changed 180 degrees. There is a need.
Therefore, seedlings are first planted in the middle part of the field, leaving a part for turning at the ridge at the front and rear ends of the traveling machine in the straight direction. When the seedling planting work is carried out one after another in this manner, unplanted portions corresponding to a plurality of rows (e.g., eight rows) remain along the ridges at the front and rear ends of the field in the direction in which the traveling machine moves straight ahead. Similarly, there are times when there is only room left for planting, for example, four rows, in the right or left ridge area in the straight-travel direction of the traveling machine. In this case, an unplanted area will remain at the edge of the ridge on the third side of the field.

In such an unplanted area, by operating only a predetermined seedling planting unit in the seedling planting device, seedlings are planted in the unplanted area without overlapping seedlings in the already planted area, and in addition, seedlings can be planted in the unplanted area without excess or deficiency. It is.

[Problem to be solved by the invention] In the above case, in order to plant seedlings in 4 rows, only the part of the seedling planting unit corresponding to 4 rows is driven, and in order to cut off the power transmission of the remaining seedling planting units, that part is driven. After working with the clutches OFF, when turning the traveling machine 90 degrees along the ridge and planting 8 rows, it is necessary to turn ON the clutches of all seedling planting units.

On the other hand, as mentioned above, before turning the rice transplanter at the edge of a ridge, power transmission to the seedling planting device is first turned OFF and then the seedling planting device is raised, and after turning, the seedling planting device is lowered before power is transmitted. Because of the large amount of work involved, sometimes we forget to turn on the clutch of the seedling planting unit, and if we do so, some parts remain unplanted, so we have to redo the operation or manually seed the seedlings. There was a problem in that planting had to be done, which was time-consuming and reduced work efficiency.

[Means for solving problems]

Therefore, in the present invention, a control handle is provided on the traveling body of a rice transplanter equipped with a seedling planting device consisting of a plurality of seedling planting units, and a plurality of clutches are provided to turn the rice transplanter on and off for each of the seedling planting units. The clutch operating levers are interlocked and connected in such a way that the corresponding clutches of the seedling planting units are turned ON and OFF by turning the respective clutch operating levers ON and OFF, and each of the clutch operating levers is provided with a locking means. When each manual operation lever is rotated in a direction in which the clutch of each of the seedling planting units corresponding thereto is turned in the OFF direction, the clutch can be held in that state, and each of the locking means and the control handle The clutch operation lever, which is engaged with the engagement means, is released in the ON direction by rotating the operating handle beyond a certain level.

[Action and effect]

According to this configuration, once the clutch operating lever is rotated so as to turn off the clutch only at a predetermined seedling planting unit location, that state can be maintained by the locking means, and seedling planting work can be performed only for a predetermined number of rows. Then, when the control handle is rotated by a predetermined amount to the extent of turning around a corner of the field (sometimes less than 90 degrees), the clutch at the OFF point will automatically switch to the ON direction, and all seedling planting units will be turned on. can be put into operation again. Therefore, at least the part of the seedling planting unit that was turned OFF during the previous operation is automatically returned to the operating state by rotating the control handle, so that the operator can turn off the part of the seedling planting unit that the worker wants to stop working on in the next operation. All you have to do is concentrate your attention on the operating lever, and then you can easily plant seedlings by operating all the seedling planting units or by only using a predetermined seedling planting unit.

Moreover, the amount of work required when the traveling body turns is reduced, and malfunctions are reduced accordingly, resulting in an effect of improving the efficiency of seedling planting work.

〔Example〕

Next, an embodiment in which the present invention is applied to a riding-type rice transplanter for planting 8 rows will be described.
and front wheels 3, 3 attached to the front lower surface thereof, and rear wheels 5, attached to the rear lower surface via chain cases 4, 4.
5, a control seat 6 and a control handle 7 are provided on the upper surface of the vehicle body frame 2.
Power from the engine 8 on the front upper surface of the vehicle is transmitted to each of the wheels 3, 3, 5, and 5 via a conventionally known main transmission mechanism and auxiliary transmission mechanism. Reference numeral 9 denotes an operation lever for the main transmission mechanism, which is disposed at an operation section near the left outer side of the seat 6 in the direction of travel, and the other collective operation lever 1 is arranged at an operation section near the right outer side of the seat 6 in the direction of travel.
0 is a high-speed/low-speed switching operation of the sub-transmission mechanism, a drive switching operation of the hydraulic cylinder 11 (described later), ON/OFF switching of the power transmission clutch to the seedling planting device 12, and alternate selection of a pair of left and right muscle-pulling marker support rods (not shown). It is possible to perform elevation and elevation operations at once.

Reference numeral 12 denotes a seedling planting device which is attached to the rear of the vehicle body frame 2 via a parallel link mechanism 13 consisting of a top link and a pair of left and right lower links. A transmission case 14 to which power is transmitted via a PTO shaft and a flexible shaft protruding from the rear, this transmission case 14
Four seedling planting units 15 are installed at appropriate intervals in the lateral direction via pipe-shaped support members 20 on both the left and right sides of the plant.
15, 15, 15, each seedling planting unit 15 consists of a seedling planting case 16, a float 17 attached to the bottom surface of each seedling planting case 16, and a seedling arranged at an angle so that the upper end approaches the traveling machine 1. It consists of a mounting table 18, and a vertically swinging type seedling planting mechanism 19 is provided on both left and right rear sides of each seedling planting case 16.

Moreover, between the rear part of the vehicle body frame 2 and the traveling body 1 such as the parallel link mechanism 13, and the seedling planting device 12,
A hydraulic cylinder 11 is provided to drive the seedling planting device 12 up and down significantly.

A left and right longitudinal seedling take-out plate 21 having an L-shaped cross section is disposed between the upper surfaces of the seedling planting unit 15, and a trochanter is provided at the upper end of the support that is erected from the front ends of both the left and right seedling planting units 15, 15. On the other hand, an upper rail at the middle part of the back surface of the seedling platform 18 is fitted over the trochanter, and a lower rail attached to the lower end of the seedling platform 18 is arranged parallel to the seedling take-out plate 21, It is configured to be able to reciprocate from side to side by means of laterally-described lateral feeding means.

A power transmission mechanism 22 inside the transmission case 14 that transmits power from the traveling body 1 side via a telescopic shaft.
The claw shaft at the rear end of the seedling planting case 16 in each seedling planting unit 15 is rotated by driving the chain 28 through the shaft 23, the chain 24, and the transmission shaft 25 in the pipe-shaped support member 20, and Each seedling planting claw 26 in the planting mechanism 19 has a seedling take-out opening formed by a notch in the seedling take-out plate 21 and a field scene 27.
It is configured to swing up and down between the two. On the shaft 29 of each of the 16 seedling planting cases in each seedling planting unit 15, there is a clutch 30 of the seedling planting unit that can only slide and is biased by a spring on the side of the chain sprocket 28' that is loosely fitted onto the shaft 29. An operating shaft 31 is provided and faces the clutch 30 of each seedling planting unit.
Power is transmitted to the planting mechanism 19 by the rotation of the
Each operating axis 31 is configured so that it can be turned on and off.
is connected via an inner wire 33 to a clutch operating lever 32 disposed on the traveling body side, which will be described later.

The transmission case 14 also includes the seedling stand 1.
A cross-feeding shaft 35 having a reciprocating thread groove 34 for laterally feeding the cross-feeding shaft 8 from side to side, and a reciprocating thread groove 3 of the transverse feed shaft 35.
A transverse rod 37 with a ship-shaped key 36 that engages with 4.
Brackets 38 are arranged in the left and right direction of the traveling machine, and both left and right ends of the transverse feed rod 37 are fixed to the seedling stand 18.
The seedling platform 18 is configured to make reciprocating horizontal movement by a certain distance in both left and right directions of the traveling machine.

Furthermore, it is attached to the transmission case 11 and the shaft 2
A cam 4 is mounted on both left and right ends of a shaft 39 driven by a shaft 39.
0 and 40, a vertical feed shaft 41 is pivotally supported at the bottom of the rear surface of the seedling stand 15, and the vertical feed shaft 41 is equipped with a one-way rotating clutch that rotates the shaft intermittently one pitch at a time in only one direction. A cam 42 is provided, and one of the cams 40 contacts and presses the feed cam 42 at both left and right ends of the horizontal feed of the seedling stand, thereby moving the vertical feed shaft 41.
Rotate intermittently. A vertical feed body 43 attached to the vertical feed shaft 41 is configured to vertically feed the seedling pine on the seedling platform 18 in the direction of the seedling take-out plate 21 at the lower end.

Turn this on for each seedling planting unit 15.
The four clutches 30 to be turned off and the corresponding clutch operation levers 32, 32, 32, 32 are located in the case frame 4 near the left and right rear of the control seat 6 of the traveling aircraft 1.
4, and the intermediate portion of each clutch operating lever 32 is connected to the arm 47 of the operating shaft 31 of each clutch 30 via an inner wire 33 and a spring 46. In FIG. 2, if the clutch operating lever 32 is in position A, the clutch 30 is turned on, and if it is in position B, it is turned off.

Reference numeral 48 denotes a locking means for holding each clutch operating lever 32 in the state when the clutch 30 is turned in the OFF direction (OFF direction). A locking plate 51 with a locking pawl 50 pivotably supported horizontally on an upright support shaft 49, and a lever that presses the locking pawl 50 of the locking plate 51 against the side surface of the clutch operating lever 32. It consists of a biasing means 52 such as a winding spring. On the other hand, each clutch operating lever 32 is pressed toward the side surface of the locking plate 51 by a spring 53 fitted onto the shaft 45. The clutch operating lever 32 is located on the upper surface of the cover body 54 that covers the locking means 48 from the A position to the B position.
A guide groove 5 that allows the user to move back and forth straight to the desired position or while avoiding the locking claw portion 50 of the locking plate 51.
5 is drilled.

Reference numeral 56 indicates that the clutch operating lever 32 which locks each of the locking means 48 and the control handle 7 to the locking means 48 by rotating the control handle 7 above a certain level is in the ON direction (clutch 30 is ON). The release means 56 is a release means related to the release means 56 so as to be released when the rotation angle within the rotation limit of the pitman arm 57 which rotates in response to the rotation operation of the control handle 7 exceeds a certain level. It consists of a detection means 58 for detecting the detection means 58 and a drive means 59 for driving each of the locking means 48 in accordance with the detection signal of the detection means 58.

In the embodiment shown in FIG. 1, the detection means 58 is a pair of opposing inner wires 60 and 61 connected to the Pitman arm 57, and the drive means 59 is rotatably supported on a pin 62, and the inner wires 6
a swinging arm 63 to which the other end of 0, 61 is connected;
It consists of a connecting rod 64 that connects the swinging arm 63 and the locking plates 51, which are each of the locking means, and the inner wires 60, 61 can be rotated as appropriate by rotating the operating handle 7 in either the left or right direction. Since either one of them will be pulled, the locking plate 51, which is the locking means 48, is rotated all at once in a direction away from the side surface of the clutch operating lever 32 by the swinging arm 63 and the connecting rod 64, and the clutch operating lever is Release the lock.

In this configuration, during rice planting work, while placing the seedlings on the seedling platform 18, the seedling planting device 12
By lowering the float 17 and driving the wheels 3 and 5 with the float 17 in contact with the field 27, the machine will move straight and all the clutch operating levers 32... By rotating in the ON direction and driving the entire seedling planting mechanism 19, the seedlings are divided one by one from the seedling pine on the seedling platform 18 using the seedling planting claws 26, and a plurality of rows (the main seedlings) are planted on the field area 27. In the example, seedlings can be planted along row 8).

When the rice transplanter comes to the edge of the ridge in this state, the batch operation lever 10 is operated to disengage the clutch for transmitting power to the seedling planting device 12, and the switching valve of the hydraulic cylinder 11 is switched to raise the seedling planting device 12. . Next, after turning the rice transplanter 180 degrees at the edge of the ridge, the hydraulic cylinder 11 is again driven by the batch operation lever 10 to lower the seedling planting device 12 and plant the seedlings while moving straight.

At the side ridges of the field scene 27, when the clutch operating lever 32 of the seedling planting unit 15 other than the predetermined seedling planting unit 15 is turned OFF, the clutch operating lever 32 of that part is turned in the OFF direction. ,
While the locking plate 51 biased by the force of the spring 52 is moved backward, the clutch operation lever 32 is locked to the locking claw portion 50 and this state is maintained.

As a result, seedlings are planted in the unplanted areas by a predetermined number of seedling rows. When the corner of the field is reached, the power transmission to the entire seedling planting device 12 is cut off, and the control handle 7 is turned significantly to raise the seedling planting device 12 and turn the traveling body 1 to match the corner. let

At this time, one of the pair of opposing inner wires 60, 61 connected to the pitman arm 57 of the operating handle 7 is connected to the release means 5.
6, the swinging arm 63 and connecting rod 64 are pulled to release the locking plate 51 from the side of the clutch operating lever 32, so the clutch operating lever 32, which is biased in the ON direction by the spring 46, automatically moves in the ON direction. It will be canceled in .

Therefore, after the traveling body 1 turns, the clutch operating lever 32 of the predetermined seedling planting unit is turned OFF again by the number of rows on the side of the rice transplanter that are not planted with seedlings.
All you have to do is turn it in the OFF direction.

In the embodiment shown in FIG.
2, a pair of sensor switches S1 and S2 are arranged as a detection means 58 for detecting a certain rotation angle of the control handle 7 at an appropriate distance from each other in the rotation direction of the pitman arm 57. The connecting rod 64 is forcibly moved by an electromagnetic solenoid, which is a driving means 59, via a control unit 65 in an electric circuit in response to a detection signal of In addition to the contacting limit switch, a light reflection type or light blocking type photo sensor may be used.

Note that if the guide groove 55 on the upper surface of the cover body 54 is formed in a curved shape that allows the clutch operation lever 32 to move in the front and back direction while avoiding the 50 locking claws of the locking plate 51 as shown in the figure, The clutch operating lever 32, once locked in the OFF direction, can be manually operated without rotating the operating handle 7.
Can be released in the ON direction.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, FIG. 1 is a diagram showing the main parts of the present invention, FIG. 2 is a sectional view taken along the line -- in FIG. 1, and FIG. 3 is a sectional view taken along the line -- in FIG. 2. , 4th
The figure is a plan view of the rice transplanter, FIG. 5 is a side view, FIG. 6 is a side view taken along the line -2 in FIG. 5, and FIG. 7 is a diagram showing another embodiment. 1... Traveling aircraft, 3... Front wheels, 5... Rear wheels, 6
... Control seat, 7 ... Control handle, 57 ... Pitman arm, 10 ... Collective operation lever, 11
... Hydraulic cylinder, 12 ... Seedling planting device, 15 ...
Seedling planting unit, 16... Seedling planting case, 19...
Seedling planting mechanism, 30...Clutch, 32...Clutch operation lever, 33, 60, 61...Inner wire, 44...Case frame, 54...Cover body, 4
5... Shaft, 46, 53... Spring, 48... Locking means, 50... Locking claw portion, 51... Locking plate, 55...
...Guide groove, 56...Release means, 58...Detection means, 59...Driving means, 62...Pin, 63...
Swinging arm, 64... continuous rod.

Claims (1)

[Scope of utility model registration request] The running body of a rice transplanter equipped with a seedling planting device consisting of a plurality of seedling planting units is provided with a control handle, and a plurality of clutch operating levers corresponding to clutches for turning on and off each seedling planting unit are provided. By turning each ON/OFF switch, the corresponding clutch of each seedling planting unit is
The clutch operation levers are connected in an interlocking manner so as to be turned on and off, and each of the clutch operation levers is associated with a locking means,
The corresponding clutches of each seedling planting unit are
While each manual operation lever is configured so that it can be locked in that state when turned in the OFF direction,
In a seedling planting device, each of the locking means and the control handle are associated with each other so that a rotation operation of the control handle beyond a certain level releases a clutch operation lever that locks the locking means in the ON direction. Clutch control lever release device for seedling planting unit.