JPS647721B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a line marker device that indicates the direction of movement of a rice transplanter, and more specifically, the present invention relates to a line marker device that indicates the direction of movement of a rice transplanter. This relates to an operating device for a line marker that is marked on the field surface during the work process.

Conventionally, with this type of device, each time the rice transplanter rotates the markers installed on both the left and right sides, the marker on the unplanted area falls downward and becomes a line, and the marker on the other planted area is lifted upward. A switching device was provided so that the marker would be in a state where no delineation was performed, and a switching device was also provided that would cause both markers to be in a raised storage state where no delineation was performed, for when the marker was stored or when driving on the road.

However, when large-scale rice transplanters for multi-row planting are used, unplanted rice is left on the headland of the field.Farmers always try to minimize the amount of unplanted rice on the headland, but rice is planted from the side edges of the field. If you go, there will be a U-shaped leftover planting at the end, and in order to ensure that this is planted, you will have to maneuver the rice transplanter backwards and install it at the edge of the unplanted area. In this case, back maneuvering was difficult, and the headland had to be dug back up with wheels, so even if seedlings were planted on the damaged headland, they would not be planted reliably. Recently, when planting seedlings using a large rice transplanter, it is now possible to plant seedlings from the beginning, leaving enough space for the rice transplanter to do the planting in one process, and then planting the unplanted portions at the end. A method of planting seedlings without having to manipulate them has come to be adopted.

In this case, it has become necessary to be able to draw the left and right markers at the same time, but conventional rice transplanters cannot perform such an operation. Furthermore, in the case of circular or gourd-shaped fields, seedling planting is often started from the center, but even in this case, it is necessary to draw lines on both the left and right sides of the rice transplanter.

Therefore, the present invention provides a switching mechanism that can switch to a working state in which both the left and right markers can draw lines.

To explain one embodiment of the present invention, reference numeral 1 denotes a running vehicle body, which has a front wheel 2 and a rear wheel 3 at its lower part, a prime mover mounted at the upper front side, and a control seat 4 provided at the upper part of the rear wheel 3. A control handle 5 is provided at the front.
6 is a bonnet that covers the prime mover.

Reference numeral 7 denotes a chain case extending rearward and downward on both left and right sides of the traveling vehicle body, and the rear wheel 3 is mounted on an axis on the outside of the rear end of this chain case.

8 is a reinforcing horizontal frame, which is attached to the left and right chain cases 7,
7, and in the illustrated example, it is made up of pipes.

Reference numeral 9 denotes a rice transplanter, in which a seedling tank 11 is provided on the upper part of a transmission case 10 constituting the machine body, and the seedling tank 11 is provided with a seedling tank 11 that moves horizontally and reciprocally from side to side. Seedlings are separated from each other and planted in the field below. 13 and 14 are soil leveling floats, with the soil leveling float 13 placed below the mission case 10, and the leveling float 1 placed at a predetermined interval on both the left and right sides of the leveling float 13.
4 and 14, the rear part of each is pivoted by a horizontal pin 15, and the front part is suspended by a link 16 so as to be freely movable up and down.

Numeral 17 is a four-point link, and an arm 20 whose front ends of the upper link 18 and lower link 19 integrally project upward from the reinforcing horizontal frame 8 is pivotally supported, and its rear end is pivotally supported by the upper and lower frames 21. A rolling metal 22 is attached to this upper and lower frame 21. A rolling shaft 23 from the rice transplanter 9 side is rotatably fitted into this rolling metal 22.

Reference numeral 24 denotes a hydraulic cylinder device interposed between the traveling vehicle body 1 and the operating arm 25 provided integrally with the upper link 18 of the four-point link 17;
and a hydraulic piston 27, the piston 27
The rice transplanter 9 is raised when the rice transplanter 9 is extended and lowered when it is retracted.
6 from the hydraulic system pump 28 to the switching valve 2.
The valve 29 is connected to the soil leveling float 13, and when the float 13 moves upward, the rice transplanter 9 is raised, and when the float 13 moves downward, the rice transplanter 9 is raised. is configured to be lowered, and the valve 29 can also be switched by a hydraulic switching lever 30 provided near the control seat 4, so that the rice transplanter 9 can freely move up and down.

Reference numerals 31 and 32 indicate line markers, which are attached to the left and right sides of the rice transplanter 9 via rotating rods whose bases are pivoted, and are always kept in a lowered position by springs 33 and 34. And these markers 31,
32 is in a state where a line is drawn on the surface of the field when it is lying down, and this drawn line is the line that is already drawn when the vehicle body 1 is rotated to align the left and right center position with this line when planting seedlings. The spacing between the seedling planting row at the outermost end of the plant and the seedling planting row at the inner end, which is planted after turning, is set to match the other planting intervals. Incidentally, reference numeral 35 is a center marker provided at the left and right center position on the tip side of the bonnet 6 of the traveling vehicle body, and when the center marker 35 is aligned with the line laid on the surface of the field, the distance between the rows can be kept constant.

36 is a marker pull plate, which is connected to the hydraulic piston 2;
The marker drawing plate 6 is integrally fixed to the tip end side of the marker plate 7, and two holes 37 and 38 are bored on the left and right sides of the marker pull plate 6.

Reference numeral 39 denotes a frame body into which marker pull rods 40 and 41, which will be described later, are fitted and supported, and stopper pins 42 and 43 are attached, and is integrally formed with the hydraulic cylinder 26.

The marker pull rods 40 and 41 are thicker on the base side,
The tip side is made thin, and the thick part is inserted into the support holes 44 and 45 drilled in the frame 39, and the thin part at the tip is inserted into the holes 37 and 38 of the marker pull plate 36. Stoppers 46 and 47 that cannot pass through the holes 37 and 38 are provided, and stepped portions 48 and 49 are formed at the base end of the thick portion.

50 and 51 are release wires, and the base of the inner wire is connected to the marker pull rods 40 and 4.
1, and its distal end portions are connected to the base-side rotation rods of the line-drawing markers 31 and 32.

Solenoids 52 and 53 are installed in the frame 39 so as to be energized to pull out the stopper pins 42 and 43. Reference numerals 54 and 55 denote springs that push down the stopper pins 42 and 43 and stably hold the stopper pins 42 and 43 on the stepped portions 48 and 49 of the marker pull rods 40 and 41, respectively.

FIG. 4 shows an electric circuit that constitutes an operation switching mechanism for markers 31 and 32, and a switch 61 in this circuit.
Accordingly, the operation of the markers 31 and 32 is switched. That is, the terminals a and
b. A current from the battery 60 is connected to a terminal c that is conductive to an alternate changeover switch 59 that is provided in the middle of the circuit 58 that connects both circuits, and the current is switched to the circuit 56 side or the circuit 57 side every time the current is switched to the circuit 56 side or the circuit 57 side. It constitutes a switch 61 which can respectively switch between a state (c) in which current is applied to terminals a and b at the same time, a state (a) in which electricity is applied only to terminal c, and a state (b) in which electricity is not applied to any terminal.

62 and 63 are display lamps, 64 is a buffer spring 65 is a change lever, 66 is a clutch pedal, 67 is a drive shaft of the rice transplanter 9, and 68 is a seedling planting clutch lever. '' must be performed once every turn, so each time this is turned on or off, the changeover switch 59 can also be operated.

Next, to explain the operation of the above example, first, a large number of seedling tanks 11 are arranged side by side in the left and right directions.
After loading the pine seedlings with soil, each part is driven by a prime mover, and the rice transplanter 9 attached to the traveling vehicle body 1 moves from one side of the field to the edge of the ridge, leaving only a width that allows the rice transplanter 9 to plant the seedlings in one stroke. setting, switch the switch 61 attached to the panel at the bottom of the handle 5 to the state shown in C in the figure, switch the hydraulic switching valve 29 in the direction of the arrow D with the hydraulic switching lever 30, and remove the hydraulic piston 27.
The rice transplanter 9 is pushed down by the load of the rice transplanter 9, and the soil leveling floats 13 and 14 are brought into contact with the field surface to start rice transplanting work.

At this time, since terminals a and b of electric circuit A are energized by switch 61, solenoid 5
2 and 53 are both excited and the stopper pins 42 and 4
3 is in a state of being pulled upwards. Therefore, as the marker puller plate 36 moves with the movement of the piston 27, the marker puller rod 40,
The stoppers 46 and 47 provided at the tip of the marker pull rod 41 move toward the hydraulic cylinder 26 side, and the marker pull rod 4
The inner part of the release wire attached to 0 and 41 will become loose. Therefore, the line drawing markers 31 and 32 which are interlocked and connected to the wire are collapsed by the springs 33 and 34, and both the markers 31 and 32 are
32 is in a line drawing state on both the left and right sides of the rice transplanter 9.

In this state, the seedling planting clutch 68 is turned on. Then, the seedling tank 11 is reciprocated from side to side, and the co-planting rod 12 is moved up and down, so that the seedling tank 1
The seedlings are divided and engaged one by one from each seedling, and the seedlings are planted on the surface of the field leveled by leveling floats 13 and 14. And if the tiller in the field is uneven,
The ground pressure of the earth leveling floats 13 and 14 changes, and the earth leveling floats 13 and 14 swing up and down. and,
When the tiller is deep and is moved up, the hydraulic switching valve 29
is switched in the opposite direction of arrow 2 to move the rice transplanter upwards,
On the other hand, when it becomes shallow and is moved downward, the valve 29 is switched in the direction of the arrow 2 and moved downward, and the leveling floats 13 and 14 are moved downward.
The structure is such that seedlings are planted while always maintaining ground pressure within a predetermined range.

In this way, seedling planting work is carried out,
In this first seedling planting process, both the left and right line markers 31 and 32 draw lines on the surface of the field.
When it reaches near the ridge of the field in the forward direction, the switch 61 is switched to the state shown in A, the planting clutch lever 68 is used to disengage the clutch, and the hydraulic switching lever 30 is used to switch the switching lever 29 to raise the rice transplanter 9. .

Then, the hydraulic piston 27 protrudes, and the marker pull plate 36 moves toward the marker pull rod 40,
It operates by engaging the stoppers 46 and 47 of 41,
Both left and right line markers 31 are connected via wires,
32 stands up.

After operating in this manner, the handle 5 is rotated to turn. After turning, the hydraulic switching lever 30
After switching the hydraulic pressure switching valve 29 in the opposite direction of the arrow D to lower the rice transplanter 9 to the seedling planting position, the seedling planting lever 68 is operated to "on". Then,
When the rice transplanter starts to be driven, the alternate changeover switch 59 of the electric circuit A switches to the circuit 56 or the circuit 57.
It can be switched to either one. In this case, for example, if only the circuit 56 is energized, only the solenoid 52 will be energized and only the stopper pin 42 will be pulled up. Therefore, the step portion 48 is unlocked by the stopper pin 42, and only the drawing marker 31 on this side is in the drawing state. At this time, when the delineation marker 31 is on the side of the planted area, it is the opposite, so it is better to "disengage" the planting clutch of the rice transplanter 9 on the spot, raise it, and then lower it. The alternation changeover switch 59 is switched, and the marker 32 on the unplanted land side is now activated.

In this way, the marker on the unplanted area side, for example, 3
2 to the active state and start rice transplanting work. Then, by manipulating the center marker 35 of the traveling vehicle body 1 along the line marked on the field scene in the previous work step, a predetermined row spacing is maintained, allowing reliable seedling planting work. Then, as we continued to get closer to the ridge,
When the planting clutch is disengaged and the rice transplanter 9 is raised and turned, the line drawing marker 31 on the opposite side is switched to the activated state and the other marker 32 is switched to the non-operated state by the alternate changeover switch 59. In this way, as the seedling planting work progresses while turning one after another, it finally reaches the ridge at the end of the field. In this case, the unplanted part of the field will be left all around the field, and if the field is planted once, the seedling planting work will be completely completed.

Now, in this case, one side of the aircraft will be along the ridge and the other will be on the side of the planted area, so both the left and right markers 31, 3
It would be a problem if both of them were in use. In this case, the switch 61 in the electric circuit A is switched to the state shown in the figure (b), and neither of the circuits 56 and 57 is energized so that the solenoids 52 and 53 are not excited. When the rice transplanter 9 is raised, the marker pull rods 40, 41 are pulled up by the marker pull plate 36 integrated with the hydraulic piston 27, and the stopper pins 42, 43 are moved to the base side steps 48, 49 of both the marker pull rods 40, 41. This state is maintained even when the piston 27 is pushed into the cylinder 26 and the rice transplanter 9 is lowered.

In this way, both markers 31 and 32 are left unused, and the entire circumference near the ridges of the field is planted.

When planting at the edge of a ridge at the beginning of planting in a field, the line was drawn in the initial planting process, so aligning the center marker 35 of the traveling vehicle body with this line and planting will ensure that the spacing from the row planted first is correct. can be maintained and planted accurately.

In the case of a circular or gourd-shaped field, seedling planting may be started from the center of the field to the left and right, but in this case, both the left and right markers 3
1 and 32 are in use, if you have planted one side and then plant the other side, you can accurately plant with a certain distance between rows because the reference line has been drawn.

This invention provides line markers 31 and 3 that mark the direction of movement of the rice transplanter during turning back after turning and planting seedlings on the field surface during the work process before turning.
2 is provided on both the left and right sides of the rice transplanting machine so as to be operable in an upright non-operating state and a laid-down operating state, and the left and right line markers 31 and 32 are operated when the seedling planting clutch is turned. Among the left and right markers 31 and 32, only the marker on the unplanted area side is automatically switched to the active state, and both markers are switched to the active state, and both markers are inactive. Since it is composed of a single switching mechanism that can be switched to three modes, including a state in which both sides are inactive and a state in which both sides are inactive,
By setting the switching mechanism in advance to match the work format, it is possible to not only mark the course of the rice transplanter after turning by drawing a line only on the unplanted land side during planting, but also mark the path of the rice transplanter on both the left and right sides at the edge of the ridge. It can be stored in a stored state so that it does not get in the way, and at the end of planting in a square field, when you complete the planting by going around the entire ridge edge, the width of the seedlings can be planted by one stroke of the rice transplanter. When planting in a circular field or in a gourd-shaped field, set both left and right markers to the active state and draw lines on both the left and right sides of the rice transplanter. In this case, the rice transplanter can be operated while maintaining accurate row spacing for the initial seedling planting row.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a side view, Fig. 2 is a side sectional view of the main part, Fig. 3 is a plan view of the main part, and Fig. 4 is an electric circuit. Figure, 5th
A, B, and C in the figures are explanatory diagrams showing the switching states of the switch 61, and FIG. 6 is a hydraulic circuit diagram. Symbols in the diagram: 1 is the traveling vehicle body, 9 is the rice transplanter, 3
Reference numerals 1 and 32 are line drawing markers, and numeral 61 is a switch for switching the operating state of the line drawing markers.

Claims (1)

[Claims] 1. Turn back after turning to mark the direction of movement of the rice transplanter during seedling planting work. Marks marked on the field surface during the work process before turning are placed on both the left and right sides of the rice transplanter in an upright state and in a laid down state. Only the marker on the unplanted area side of the left and right markers automatically enters the active state due to the on/off operation of a seedling planting clutch that is operated when the left and right line-drawing markers are turned. A single unit that can be switched into three states: a unilateral action state where both markers switch, a bilateral action state where both markers switch to the action state, and a bilateral non-action state where both markers switch to the non-action state. A line marker device equipped with a switching mechanism to indicate the direction of movement of a rice transplanter.