JPH07184420A - Hole-making unit of self-propelled transplanter - Google Patents

Abstract

PURPOSE:To enable ready on-off control of an electric heater attached to a hole-making unit, make it easy through an operation near at hand in a steering unit, improve both the workability and the service life of a transmission belt to an electric generator, make it possible to stably make holes in a mulching film and extend the service life of the electric heater. CONSTITUTION:A relay circuit 72 with a heater control relay 71 is incorporated in a power circuit 70 between an electric heater 53 and an electric generator 3 and the running machine body is equipped with a control switch 73 for the relay 71 in the neighborhood a steering unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hole making device for a self-propelled transplanter, and more particularly, in a self-propelled transplanter for transplanting seedlings such as vegetables into a ridge in a field, a mulch film laid in the ridge has a planting hole. The present invention relates to a hole making device for making holes.

[0002]

2. Description of the Related Art Conventionally, in a transplanting machine, a mulching film laid in a ridge is melted, and a hole making device for making a hole for planting in the mulch film by this melting is disclosed in, for example, Japanese Patent Laid-Open No. 5-68439. Known as shown.

Generally, in the hole making device, an electric heater is attached to the hole making body, and by heating the hole making body above the melting temperature of the mulch film by energizing the electric heater, the hole making body is lowered to The bottom surface of the perforated body is brought into contact with the mulch film, and the film is melted to perforate the planting hole.

The electric heater is connected to a generator that operates to generate electricity in conjunction with an engine mounted on the transplanter, and the generator is used as a power source for heating operation. It is usually turned off by an operating lever of a belt tension clutch provided in the middle of a transmission belt that links the engine and the generator.

[0005]

However, the operating lever of the belt tension clutch is directly connected to the clutch arm of the clutch, and the engine and the generator are located in front of the body of the transplanter. Since it is provided on the section, the operator must perform on / off operation of the clutch by the operation lever while moving to the front part of the machine body.
Therefore, the on / off operation of the electric heater becomes complicated, and since the operation of tensioning and releasing the tension of the transmission belt is repeated, the belt life is shortened. . In addition, the temperature of the punched body rises too much during work in favorable conditions where the temperature is high and the wind is small, so that stable piercing of the mulch film cannot be performed, and the electric heater can be quickly heated due to the temperature rise. There was also a problem of deterioration.

An object of the present invention is to easily control the on / off of an electric heater provided in a hole making body by a hand operation in a control section, and improve the operability of the electric belt for a generator. The life of the heater can be extended, and yet stable piercing of the mulch film can be achieved, and the life of the electric heater can be extended.

[0007]

In order to achieve the above-mentioned object, the present invention has an electric heater 53 in a traveling machine body 1 having a transplanting device 4, and an elevating and lowering hole forming body 27 for forming a planting hole in a multi-film. A hole forming device for a self-propelled transplanter supported as much as possible, wherein the electric heater 53 is connected to a generator 3 provided in the traveling machine body 1, and a heater circuit is controlled by a power supply circuit 70 of the heater 53 and the generator 3. A relay circuit 72 having a relay 71 is connected, and an operation switch 73 of the heater control relay 71 is provided near the control section of the traveling machine body 1.

[0008]

Function: The power supply circuit 7 for the electric heater 53 and the generator 3
0 is provided with a relay circuit 72 having a heater control relay 71, and an operation switch 73 of the relay 71 is provided near the control section of the traveling machine body 1. Therefore, the electric heater can be operated by a simple operation. The on / off control of 53 can be performed, and this on / off control can be performed by hand operation because the operation switch 73 is provided near the control section, and the operability can be improved. Since the generator 3 is constantly driven when the engine is driven, the transmission belt that links the generator 3 to the engine can always be maintained in a tensioned state, and thus the life of the belt can be extended. By controlling the on / off of 53, the temperature of the hole forming body 27 can be maintained within a certain range, so that stable perforation of the multi-film can be performed, and the electric heat Life of the motor 53 is also able long.

[0009]

EXAMPLE The transplanter shown in FIGS. 6 and 7 is a walking type transplanter, in which an engine 2 is provided in the upper front part of a traveling machine body 1 and a generator 3 which is linked to the engine 2 via a transmission belt 3a. And a rear part that supports the transplanting device 4 and extends rearward and downward from both sides of the mission case 5 in the vehicle width direction, and supports the left and right drive wheels 7 on a pair of transmission cases 6 that are swingably supported. The front portion of the traveling machine body 1 supports a pair of front wheels 9 via a swing arm 8 that swings up and down in response to the swing of the transmission case 6, and along the side surface of the ridge A. It is provided with a pair of guide wheels 10 which rolls in a rolling manner.

The traveling machine body 1 includes a front frame 11, the mission case 5 fixed to a rear portion of the front frame 11, an intermediate frame 12 fixed to a rear portion of the mission case 5, and an intermediate brake thereof. The rear frame 13 is fixed to the rear part of the transmission frame 12, and the transplanting device 4 is provided on the rear frame 13. The seedlings to be described later via the transplant transmission case 14 at the rear part of the mission case 5. A planting device is provided. In FIGS. 6 and 7, 15 is a gauge wheel provided below the transplantation device 4, and 1 is a gauge wheel.
Reference numeral 6 is a steering handle attached to the rear portion of the rear frame 13, and 17 is a main shift lever 18 and a stock shift lever 19.
It is an operation panel that supports. Further, 20 is a planting depth adjusting lever, and 21 is a left and right side clutch lever.

Further, the transplanting device 4 receives power from the transplant transmission case 14 so that one pot seedling is received from the pot seedling storage portion 22a of the seedling tray 22 in which a large number of pot seedling storage portions 22a are arranged vertically and horizontally. A seedling planting device 25 having a seedling take-out claw 23 to be taken out and an openable / closable transplanting claw 24 for receiving a pot seedling falling from the seedling take-out claw 23 and transplanting it to the ridge A.
Also, holding the seedling tray 22, the seedling planting device 25
The seedling feeding device 26 for supplying the seedling tray 22 to the ridge A, and the hole making device 28 having the hole making body 27 for making a planting hole in the multi-film laid on the ridge A.

As shown in FIG. 7, the seedling feeding device 26 laterally moves a seedling stand supporting frame 30 having a seedling stand 29 on which the seedling tray 22 is placed to reciprocate left and right. It comprises a device 31 and a tray vertical feeding device 32 which vertically feeds the seedling tray 22 by one pitch in the vertical direction of the seedling tray 22 at the end position of the horizontal movement of the seedling stand supporting frame 30.

The lateral feed drive shaft 33 of the frame lateral feed device 31 is provided with a transmission chain 35, on the output side of a planting clutch case 34 provided with a planting clutch (not shown).
While being interlocked via a counter shaft 36 and a transmission chain 37, the lateral feed drive shaft 33 is provided with an intermittent gear, a lateral feed stop cam, and a pair of lateral feed switching gears, which are not shown in the drawing, which are incorporated in a drive case 38. The lateral feed shaft 39 having the traverse groove 39a is interlocked, and by intermittently driving the lateral feed shaft 39, the seedling stand support frame 30 is laterally fed laterally every one pitch in the lateral direction of the seedling tray 22. Of.

The seedling table support frame 30 is provided with the seedling table 29 on the upper portion thereof, and the tray collecting guide 30 for guiding the seedling tray 22 after taking out the seedlings is provided on the lower portion thereof.
a is provided, and the vertical feed drive unit 40 of the vertical feed device 32 is attached to one side plate, that is, the outside of the left side plate 30b in the illustrated embodiment, and the seedling stand supporting frame 30 is provided.
A guide roller 41 is provided at the lower front portion of the above, and a slide guide is provided at the lower rear portion thereof, although not shown.

At the middle portion of the rear frame 13, left and right side frames 42, 43 are formed as shown in FIG.
Are fixed, and the seedling stand supporting frame 30 is disposed in a region surrounded by the side frames 42 and 43 and the intermediate portion of the rear frame 13, and the side frames 42 and 43 are fixed.
It is supported by guide rails 44 and 45 extending horizontally between them so as to reciprocate left and right by the drive of the lateral feed shaft 39, and the right side frame 43 is provided with the above-mentioned lateral feed device 31. The drive case 38 is attached and the lateral feed shaft 39 extending from the drive case 38 is attached.
The shaft end of the shaft is pivotally supported on the left side frame 42.

The tray vertical feed device 32 is supported between the left and right side frames 42 and 43, and is interlocked with the lateral feed drive shaft 33 in the drive case 38.
A vertical feed drive shaft 46, which is constantly driven during transplanting work by receiving power from the horizontal feed drive shaft 33, and the vertical feed drive shaft 4
6, a pair of longitudinal feed operation members 4 mainly composed of rollers provided on the drive shaft 46 at intervals of lateral movement strokes.
The drive unit 40 having a follower cam (not shown) that operates via 7 and an output side of the drive unit 40, and at the end position of the lateral movement of the seedling support frame 30 by the operation of the follower cam. A vertical feed driving body 49 mainly composed of a sprocket coupled to the intermittently driven output shaft 48, a vertical feed driven body 50 and mainly a roller chain, and intervenes between the pot seedling accommodating portions 22a of the seedling tray 22, The transfer belt 51 forcibly transferring the seedling tray 22 has a transfer belt 51 having a transfer member mainly composed of a pin.

The drive unit 40 has a vertical feed drive case 52 which is detachably attached to the seedling support frame 30, and the drive case 52 is interlocked with the vertical feed operation member 47 (not shown). The drive unit having the follower cam that operates in accordance with the above is installed, and the rotation amount of the output shaft 48, that is, the vertical pitch of the seedling tray 22 is selected by the shifter operation of the plurality of speed increasing gears provided in the drive unit. The vertical feed amount can be obtained accordingly.

In the above construction, however, the seedling support frame 30 is provided with the frame lateral feed device 31 each time a pot seedling is taken out by the seedling take-out nail 23.
Is moved to the left or to the right by, and when the movement end position is reached, the output shaft 48 is driven in conjunction with the vertical feed operating member 47 of the vertical feed drive shaft 46 that is constantly driven. The vertical feed driving body 49 rotates by a predetermined angle, and the seedling tray 22 is moved in the vertical direction in the seedling tray 22 via the transport member of the transport belt 51 that is hung between the vertical feed driven body 50 and the vertical feed driven body 50. The seed feed tray 23 is fed vertically by an amount equivalent to one pitch, and the seedling take-out claws 23 allow the seedling tray 2
The pot seedling taken out from No. 2 is dropped on the transplanted nail 24,
The transplanted nails 24 are used for transplantation into the planting holes perforated by the hole forming body 27.

According to the present invention, in the transplanter constructed as described above, the hole forming device 28 is constructed as follows. This hole making device 28 has an electric heater 53 embedded in the hole making body 27, and the hole making body 27 is moved up and down.
4, the electric heater 53 is connected to the output part of the generator 3 as shown in FIG. 1, and the electric heater 53 and the generator 3 are connected to each other. A relay circuit 72 having a heater control relay 71 is connected in the middle of the power supply circuit 70, and the operation switch 7 of the heater control relay 71 is connected to the steering handle 16 as shown in FIG.
3 is provided.

First, the hole forming body 27 will be described. As shown in FIG. 5, the hole forming body 27 is composed of an elliptical block body made of a material having good heat conduction and having a short axis in the front and rear of the machine body, and is mainly composed of a thermocouple in the long axis direction of the block body. A pair of electric heaters 53, 53 are embedded, a temperature sensor 55 is provided near one electric heater 53, and two mounting bolts 58 are attached to a heater stay 57 via a block-shaped heater collar 56 made of a heat insulating material. With it installed,
The heater stay 57 can be vertically and longitudinally adjusted by the elevating arm 54 that is vertically supported by the transplantation transmission case 14 extending from the rear portion of the mission case 5 through a pair of upper and lower connecting links 59 and 60. It is installed.

That is, as shown in FIGS. 2 and 4, the elevating arm 54 is provided with a large number (six in FIGS. 2 and 4) of stay mounting holes 61 in the up-down direction.
Is a long hole that extends in the front-rear direction, and these mounting holes 61 are selected, and the mounting bolts 62 in the mounting hole 61 that are long holes are selected.
The heater stay 57 is attached to the elevating arm 54 so that the vertical and forward / backward positions thereof can be adjusted by selecting the tightening position.

Further, the elevating and lowering hood 54 is attached to the transplantation transmission case 14 provided on the rear side of the transmission case 5 as described above via the bracket 63 so as to be vertically swingable, and a pair of the connecting links 59. , 60, the cam plate 65 is attached to the output shaft 64 of the transplant transmission case 14, and the outer peripheral cam surface of the cam plate 65 is provided in the middle of the upper connection link 59 of the connection links 59, 60. Is provided with a roller 66 that is constantly in contact with the cam plate 65, and the rotation of the cam plate 65 causes the roller 66 to fall into a recessed portion 65a provided on the cam surface. The hole forming body 27
Thus, the planting hole is formed by burning out in the multi-sheet laid on the ridge A.

Further, when the multi-sheet is burnt out by the hole forming body 27, the planting hole is perforated into a substantially circular shape by the forward movement of the machine body 1, and the perforated planting hole is thus perforated. Although pot seedlings are planted by the transplanting nails 24 in the above, the slip ratio of the drive wheel 7 changes depending on the field conditions where the water content is different. The relative position with respect to the implantation position by 24 is deviated, so that the implanting hole cannot be correctly implanted.

In this case, the front and rear position of the heater stay 57 with respect to the elevating arm 54 is adjusted by adjusting the mounting bolt tightening position of the mounting hole 61, and the positional deviation can be corrected by this adjustment.
Even if the field conditions change a little, it can be transplanted correctly.

Next, the electric circuit shown in FIG. 1 will be described.
The electric circuit shown in FIG. 1 has a built-in CPU and is provided with a controller 74 capable of displaying the temperature of the hole forming body 27, and the output end of the temperature sensor 55 is connected to the input side thereof. The heater operation circuit 25 having the operation switch 72 is connected, and the relay circuit 72 is connected to the output side.

In the heater operating circuit 75, the ignition coil of the engine 2 is turned on / off and the headlamp 7 is turned on.
6, a seed switch limit switch 79 for detecting the presence or absence of the seedling tray 22 and a seedling splicing buzzer 7 which are provided on the seedling placing table 29 while interposing a key switch 77 for turning on and off.
Seedling alarm circuit 8 having 9 and seedling operation switch 80
1 is connected.

The operation switch 73 also serves as the operation switch of the head lamp 76, and when the heater operation circuit 75 is closed, the head lamp 7 is operated.
The lamp operating circuit 82 of No. 6 is opened, and when the lamp operating circuit 82 is closed, the heater operating circuit 75 is opened.

In the above construction, however, by closing the heater operation circuit 75 by the operation switch 73, the heater control relay 71 of the relay circuit 72 is turned on, and the electric heater 53 of the hole forming body 27, The hole forming body 27 is heated by supplying electricity to 53, and this heating enables punching and punching of the mulch film.

The temperature of the hole forming body 27 is detected by the temperature sensor 55. When the temperature exceeds a predetermined temperature set in advance, the relay 71 is turned off to open the relay circuit 72, and the electric heater 53, The power supply to 53 is interrupted, and the hole forming body 2 by the temperature sensor 55 is cut off.
By detecting the temperature of No. 7, the punched body 27 is maintained in a predetermined temperature range to enable stable burn-through perforation of the mulch film. Further, by detecting the temperature by the temperature sensor 55, the controller 74 is Since the temperature can be displayed on the temperature display section, the hole forming body 27 can be maintained in a predetermined temperature range by a manual operation of operating the operation switch 73 while observing the temperature display.

Therefore, since the temperature of the hole forming body 27 does not exceed the preset temperature range, the burnout rate of the mulch film does not remain, and
The deterioration of the electric heaters 53, 53 due to high temperature can be prevented.

Moreover, since the heater control circuit 71 of the relay circuit 72 can be turned off by opening the heater control circuit 75 by the control switch 73 provided on the steering handle 16, the electric heater can be turned off. It is possible to easily cut off the power supply to 53, 53 with a simple operation.

As described above, the operation of the operation switch 73 enables the ON / OFF operation of the electric heaters 53, 53, and the operation switch 73 is operated by the steering handle 16.
The on / off operation of the electric heaters 53, 53 can be easily performed on the operator's side, and the electric heaters are turned off by turning off the belt tension clutch. Then, the operability can be significantly improved.

Moreover, since the generator 3 is constantly driven, the durability of the transmission belt 3a is also increased as compared with the conventional example in which the generator is operated and stopped by the intermittent operation of the belt tension clutch. In addition, there is no concern about swinging that occurs when the belt tension clutch is not sufficiently turned off.

It is to be noted that the power supply to the electric heaters 53, 53 is cut off by the operation switch 73 in an emergency not only when transplanting without using a multi-film but also when transplanting using a multi-film. This is also done when driving on the road or during transportation.

Of the connecting links 59 and 60 for supporting the elevating arm 54, the lower connecting link 60 is provided with a bolt receiving body 91 having a screw hole 91a for the lock bolt 90 as shown in FIG. The bracket 63 has
By moving the connecting links 59, 60 upward, the lifting arm 5
4 is raised, the screw hole 91 of the bolt receiver 91
An insertion hole 92 through which the lock bolt 90 can be inserted is provided at a position where “a” faces each other, and the lock bolt 90 is inserted into the insertion hole 92 so that the screw hole 91 of the bolt receiving body 91 is formed.
The elevating arm 54 can be fixed at the raised position by being screwed to a. In addition, in FIG.
Reference numeral 93 is a pivot shaft that pivotally supports the lower connection link 60 on the bracket 63, and is supported by a cylindrical shaft 94 fixed to the connection link 60 via a bearing 95.

[0036]

According to the present invention, the electric heater 53 of the hole forming body 27 is used.
Is connected to a generator 3 provided in the traveling machine body 1, a power supply circuit 70 for the heater 53 and the generator 3 is connected to a relay circuit 72 having a heater control relay 71, and the vicinity of the control section of the traveling machine body 1 is connected. Since the operation switch 73 for the heater control relay 71 is provided in the
ON / OFF control of the electric heater 53 can be performed by a simple operation of operating the switch. Moreover, since the operation switch 73 is provided near the control section, this ON / OFF control can be performed by hand operation. , Its operability can be improved, and since the generator 3 is constantly driven when the engine is driven, the transmission belt for interlocking the generator 3 with the engine can be maintained in a constant tension state. In addition, the life of the electric heater 53 can be extended, and the temperature of the hole forming body 27 can be kept within a certain range by controlling the ON / OFF of the electric heater 53. Therefore, stable perforation of mulch film can be performed, and the life of the electric heater 53 can be increased. Can be long.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram for controlling an electric heater of a hole making body.

FIG. 2 is a side view showing an example of a hole making device.

FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 4 is a partially cutaway rear view of the hole forming body as viewed from the rear.

5 is a cross-sectional view taken along the line BB of FIG.

FIG. 6 is an overall side view with a part omitted of a self-propelled transplanter equipped with a hole making device.

7 is a partially omitted plan view of the self-propelled transplanter shown in FIG. 6. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Traveling machine 3 Generator 4 Transplanter 27 Drilling body 53 Electric heater 70 Power supply circuit 71 Heater control relay 72 Relay circuit 73 Operation switch

Claims (1)

[Claims] 1. A traveling vehicle (1) having a transplantation device (4).
A self-propelled transplanter hole forming device having an electric heater (53) and a hole forming body (27) for forming planting holes formed in a multi-film so as to be capable of moving up and down. Connected to the generator (3) provided on the traveling body (1),
A power supply circuit (7) for the heater (53) and the generator (3)
Relay circuit (7) with heater control relay (71)
2) is connected and an operating switch (73) of the heater control relay (71) is provided near the control section of the traveling machine body (1), and a hole making device for a self-propelled transplanter.