JPH09248021A - Rice transplanter provided with fertilizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that when a travel vehicle body sinks in a paddy field whose till base is deep, the tilt of a hose becomes gentle and a flow of a fertilizer from a fertilizing device at the rear part of the travel vehicle body to the grooving unit of the float of a seedling planting device becomes worse. SOLUTION: The seedling planting device is provided behind the travel vehicle body, which moves forward by turning wheels on the till base of a paddy field so that the seedling planting device is elevated and lowered by a driving device 14, and the float which slides on the muddy surface of the paddy field by the forward movement of the travel vehicle body is fitted to the seedling planting device; and the fertilizer tank 33 of the integrally constituted fertilizing device 29 and a feeding-out part 36 which feeds a fertilizer out of the tank are fitted at the rear part of the traveling vehicle body so that they move up and down. The grooving unit fitted to the float and the feeding-out part 36 are conneted with a flexible hose 37 so that when the seedling planting device is elevated or lowered, the feeding-out part 36 is elevated or lowered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a rice transplanter in which a fertilizer tank of an integrally applied fertilizer application and a fertilizer in the fertilizer and a feeding portion for feeding the fertilizer are attached to a rear portion of a traveling vehicle body.

[0002]

2. Description of the Related Art In order to improve the weight balance in the front-rear direction, in a rice transplanter in which a seedling planting device is attached after the traveling vehicle body, an integrally made fertilizer tank and a feeding portion are attached to the rear portion of the traveling vehicle body. Things have been put to practical use. Further, Japanese Patent Application Laid-Open No. 7-274644 proposes a structure in which the fertilizer tank and the feeding portion can be raised and lowered.

[0003]

In the traveling vehicle body, the wheels rotate on the cultivator to move forward in the paddy field, so that the traveling car body floats up and down on the mud surface at a shallow depth of the cultivator. On the other hand, the seedling planting device is kept at a constant height with respect to the mud surface in order to keep the planting depth of the seedling uniform. Therefore, if the feeding part is fixedly installed on the traveling vehicle body, in a paddy field with a deep tiller, the slope of the hose that connects the grooving device attached to the float and the feeding part becomes loose, and the flow of fertilizer in it is reduced. Becomes worse. If this is taken into consideration and the feeding section is set high in advance, the fertilizer tank above it may project significantly upward, which may hinder the operation of supplying seedlings to the seedling table of the seedling planting device.

[0004]

According to the present invention, in order to solve the above problems, the seedling planting device 2 is driven by the driving device 14 after the traveling vehicle body 1 in which the wheels 6 and 7 rotate and move forward on the cultivator in the paddy field. A float 24 that is provided so as to move up and down by sliding on the mud surface of the paddy field by the forward movement of the traveling vehicle body 1 is attached to the seedling planting device 2.
The fertilizer tank 33 of the fertilizer applicator 29 made integrally and the feeding portion 36 for feeding the fertilizer therein are attached to the rear part of the traveling vehicle body 1 so as to move up and down, and the groove making device 26 attached to the float 24 and the feeding portion. The section 36 is connected by a flexible hose 37, and when the seedling planting apparatus 2 is moved up and down, the feeding section 36 is moved up and down in the same direction.

[0005]

[Operation] When this rice transplanter is operated in a paddy field, the wheels 6 and 7 rotate on the tiller to move forward, and the seedling planting device 2 transplants the seedlings on the mud surface during the forward movement, and while the seedlings are being transplanted. The fertilizer application device 29 applies the fertilizer in the fertilizer tank 33 to the fertilizer ditch formed on the mud surface by the working unit 26. Then, in a paddy deep in the tiller (or when the rice transplanter comes to a deeper place in the tiller), since the wheels 6 and 7 are rotating on the tiller, the traveling vehicle body 1 is against the mud surface. Sink. On the other hand, since the seedling planting device 2 behind it is kept at a constant height with respect to the mud surface regardless of the depth of the cultivator, it rises with respect to the submerged traveling vehicle body 1. Due to this rise, the fertilizer tank 33 and the feeding portion 36, which are integrally provided, rise, and the inclination of the hose 37 connecting the grooving device 26 attached to the float 24 and the feeding portion 36 is kept substantially constant. Is dripping When the cultivator is shallow, the seedling planting device 2 and the float 24 are lowered with respect to the traveling vehicle body 1, but the fertilizer tank 33 and the feeding portion 36 are lowered, and the inclination of the hose 37 is substantially the same.

[0006]

As described above, according to the present invention, the fertilizer tank 33 and the feeding portion 36 having a large weight are arranged in front of the seedling planting device 2, the weight balance of the rice transplanter is not disturbed, and the traveling vehicle body 1 is mud. When up and down with respect to the surface, the fertilizer tank 33 and the feeding portion 36, which are integrally formed, are automatically lowered or raised, and the inclination of the hose 37 connecting the feeding portion 36 and the grooving device 26 of the float 24 is always constant. Hose 37 kept constant
The amount of fertilizer flowing inside is made uniform, and the fertilizer is evenly distributed on the mud surface.

[0007]

Next, an embodiment of the present invention will be described. FIG.
As described above, the seedling planting device 2 is attached after the traveling vehicle body 1 to form a rice transplanter. The traveling vehicle body 1 is configured as follows. A main gear box 4 and a rear gear box 5 are provided in front of and behind the frame 3. A pair of front wheels (wheels) 6 and rear wheels (wheels) 7 are arranged on both sides of the gear boxes 4 and 5, respectively, and are rotated by the power of the engine 9 under the seat 8 on the paddy field of the paddy field. However, the traveling vehicle body 1 is designed to move forward. A steering handle 10 is provided in front of the seat 8 so that the rotating surface of the front wheel 6 is changed by its operation so that the traveling direction of the traveling vehicle body 1 can be manipulated. A pair of left and right columns 11 extends upward from the rear part of the frame 3, and four front and rear ends of four links 12 arranged in parallel vertically and horizontally are rotatably attached to this and the vertical frame 13 at the rear. The vertical frame 13 constitutes a parallel link which moves up and down.

The front end of the hydraulic cylinder (driving device) 14 is attached to the frame 3, and the piston rod 15 extends obliquely upward and rearward. A spring case 16 accommodating a spring for a cushion is attached to the projecting end of the piston rod 15, and the lower end of an arm 17 integral with the upper link 12 is connected to this, and when oil is sent to the hydraulic cylinder 14, the piston rod 15 is When the vertical frame 13 rises by projecting and returns the oil to the tank, the piston rod 15 is pulled back and the vertical frame 13 descends.

[0009] The seedling plant 2 is configured as follows. A seedling planting gear box 18 is attached to the lower part of the vertical frame 13 so as to be swingable around it by a rolling shaft. A seedling stand 19 which is inclined forward and upward is arranged thereon, and a plurality of mat seedlings are placed side by side and driven by the power of the engine 9 to the left and right. A plurality of seedling planting frames 20 extend rearward from the seedling planting gearbox 18 under the rear end of the seedling mounting table 19. A seedling receiving plate 21 having an L-shaped cross section is fixed to the seedling planting frame 20 and closes the outlet at the end of the seedling mounting table 19. Then, the rear end of the mat seedling projects above the seedling receiving plate 21 and moves left and right. A pair of rotary cases 22 are arranged on both sides of the rear end of each seedling planting frame 20, and a pair of seedling rods 23 are attached to each rotary case 22.
When is rotated counterclockwise by the power of the engine 9, it is possible to turn while keeping the same posture. And
The tip of each seedling planting rod 23 passes through the seedling take-up port of the seedling receiving plate 21 at the beginning of the descent of the turning to cut off one seedling, and at the lower end, insert the seedling into mud.

A plurality of floats 24 are arranged side by side,
The rear part is swingably attached to the lower ends of the respective arms 25 extending obliquely downward from the seedling planting gear box 19, so that the forward end of the traveling vehicle body 1 moves up and down while sliding on the mud surface. It's done. The front part of each float 24 projects outward so that the mud surface into which the seedlings are inserted is leveled in advance. A plurality of groovers 26 are provided on the projecting portion, and the float 24 glides to form a fertilization groove on the mud surface.

The central float 24 is a sensor float. The valve box 27 a is arranged in front of the seedling planting gear box 18 and protrudes upward from the front end of the sensor float 24.
7b is slidably inserted into this to form a valve 27. As is well known, when the seedling planting device 2 is at a constant height above the mud surface, the valve 27 becomes “neutral”, the oil is trapped in the hydraulic cylinder 14, and the seedling planting device 2 does not move. When the cultivator becomes shallow, the traveling vehicle body 1 rises above the mud surface and the seedling planting device 2 also rises. Then, the front end of the sensor float 24 descends, the valve rod 27b is pulled down, the valve 27 becomes "down", the oil in the hydraulic cylinder 14 returns to the tank,
The seedling planting device 2 descends together with the vertical frame 13. On the contrary, when the cultivator becomes deeper, the traveling vehicle body 1 sinks from the mud surface and the seedling planting device 2 becomes lower. Then, the front end of the sensor float 24 is pushed up by the mud, goes up, the valve rod 27b is pushed in, the valve 27 becomes "up", the oil discharged by the pump is sent to the hydraulic cylinder 14, and the seedling planting apparatus 2 rises. . The valve 27 can also be operated by the elevating lever 28 on the left side of the seat 8, and when this is operated to "down" and kept in the "down" position, the sensor float 24 descends to the mud surface and then this sensor The above-described automatic raising and lowering is performed by the signal from the float 24.

The fertilizer application device 29 is constructed as follows. As shown in FIGS. 2 and 3, an air chamber 31 into which air is blown from the blower 30 (FIG. 1) at the left end is arranged laterally behind the seat 8. The same number of blowout pipes 32 as the number of groovers 26 is extended backward from the air chamber 31 to blow out the air. A pair of feeding cases 34 extend downward from each of the plurality of fertilizer tanks 33, and the lower ends thereof are connected to the upper middle portions of the respective blowing pipes 32. In addition, these are integrally formed, and the feeding unit 36 is configured by the feeding case 34 and the roll 35 accommodated therein.

Both ends of a flexible hose 37 are mounted on the rear end of the corresponding blow pipe 32 and on the groove making device 26, and the roll 3
When 5 rotates, the fertilizer in the fertilizer tank 33 is scraped off by the feeding groove 35a of the cylindrical surface thereof and enters the blowout pipe 32, and the air blown from the blowout pipe 32 rides on the hose 37 and passes through the grooving device. It is led to 26, and this is made to spray in the fertilizer ditch made in the mud surface.

A pair of parallel support plates 38 are fixed to the air chamber 31, and front and rear ends of each of them are dampers 39.
It is attached to the rear part of the frame 3. When the fertilizer tank 33, the air chamber 31 and the like are pushed down, the damper 39 descends along the guide column 40 with a weak force, and when the force is removed, the damper 39 gradually rises along the column 40. It is configured. The rear part of the pair of lifting arms 41 is rotatably attached to a part of the traveling vehicle body 1 by a horizontal shaft 42,
The intermediate portion is connected and fixed by the connecting rod 43 (FIG. 4). The long hole 41a of each front end engages with the pin 38a of the support plate 38, the front part of the elevating arm 41 and the spring case 16 are connected by the wire 44, and the piston rod 15 is pulled back into the hydraulic cylinder 14 to plant seedlings. When the device 2 descends, the wire 44 pulls the elevating arm 41 counterclockwise, the damper 39 contracts, and the air chamber 31, the fertilizer tank 33, the feeding portion 36, and the like descend. On the contrary, when the piston rod 15 is pushed out from the hydraulic cylinder 14 and the seedling planting device 2 rises, the wire 44 loosens and the force pulling the elevating arm 41 counterclockwise is also increased. The damper 39 is removed so that the air chamber 31, the fertilizer tank 33, the feeding portion 36, and the like are raised so that the wire 44 is loosened.

As shown in FIGS. 1 and 3, the intermediate gear box 45 is fixed to the intermediate portion of the support 11, and the engine 9 in the main gear box 4 is fixed.
Is introduced by the PTO shaft 46. A vertical axis 47 that rotates under the power extends upward from the intermediate gear box 45.
The telescopic shaft 48 is supported by a receiving plate 49 which is integral with the supporting plate 38, and the lower end thereof slidably engages with the upper end of the vertical axis 47, so that even if the receiving plate 49 moves up and down together with the fertilizer tank 33, etc. The rotation of the shaft 47 is transmitted. The bevel gear 51 of the rearward crankshaft 50 is bitten by the bevel gear 52 of the telescopic shaft 48, and the crank arm 53 is rotating. The drive shaft 54 is supported by a pair of support plates 55 fixed to the air chamber 31 (FIG. 2), the arm 56a of the ratchet 56 and the crank arm 53 are connected by the rod 57, and the rotation of the crank arm 53 causes the drive shaft 54 to rotate. Is designed to rotate intermittently. A pair of rolls 35 are fixed to both ends of the feeding shaft 58, and the middle thereof is arranged between the pair of feeding cases 34,
The power of the driving shaft 54 is transmitted to the belt 59 through the belt 59 and the roll 3
5 is designed to rotate. The adjusting shaft 60 is the drive shaft 5.
4, the gear 62 rotates the gear 63 when rotated by the handle 61, and when the gear 63 is rotated, the gear 62 moves left and right along the screw 64, and the lateral width of the feeding groove 35a of the roll 35 changes. Then you can adjust the amount of fertilizer it delivers.

The lifting arm 41 and the clutch petal 65 or the planting clutch (not shown) are connected by a wire 66 (FIG. 4), and the main clutch or the planting clutch is "disengaged" to operate the seedling planting device 2. When stopped, fertilizer tank 33
Can be configured to automatically descend. Then, when the seedling mounting table 19 is to be replenished with seedlings, the fertilizer tank 33 in front of it is lowered, so that the replenishment work is easily performed.

As shown in FIG. 3, the cover 67 is extended to the case 3
4 is attached to the side wall of 4 by the lower shaft 68 so that the hook 69 can rotate.
It is possible to configure so that the fertilizer remaining in the feeding case 34 can be taken out by closing the inside of the feeding case 34 by hanging it with and closing it by lowering it. At this time, if the fallen cover 67 is configured to serve as a shooter, the fertilizer can be easily received by the container. Further, the side wall of the fertilizer tank 33 is extended downward to form the skirt 70, and when the cover 67 that has fallen is configured to enter the inside of the skirt 70 as well as when it is hooked with the hook 69, the feeding case 34 is waterproofed. In addition to improving the property, the risk that the extracted fertilizer gets wet with rainwater is reduced.

When the tip of the brush 71 comes into contact with the cylindrical surface of the roll 35 rotating counterclockwise and the fertilizer to be fed out overflows from the feeding groove 35a, the fertilizer is scraped off and the amount of spraying is made uniform. . The long hole 7 of the base 72 of the brush 71
A screw 73 is passed through 2a to be fixed to the feeding case 34. When the screw 73 is loosened and the base is pulled to the left, the tip of the brush 71 can be configured to separate from the cylindrical surface of the roller 35. Then, the fertilizer above flows down through the gap formed, and it becomes easy to recover the fertilizer.

In addition to this, the hose 37 is divided into a front portion 37a and a rear portion 37b to form a joint structure. As shown in FIG. 6, a cylinder 75 is provided at the tip of the recovery bag 74, and the rear end of the front portion 37a of the hose 37 removed from the rear portion 37b is inserted into the cylinder 75. Then, when the work is completed, the fertilizer remaining in the fertilizer tank 33 drops (or is fed out) into the blowout pipe 32, and is blown from the air chamber 31 into the collection bag 74 to be easily collected. At this time, if an air hole 74a is provided in the upper part of the recovery bag 74,
It is even more effective. Further, the hose 73 is integrally formed, and its front end is detachably attached to the rear end of the blowoff pipe 32. After removing these, one end of the hose independently made may be attached to the blow-out pipe 32 and the other end may be inserted into the tube 75.

As shown in FIG. 7, the roll 35 is fed out to the case 3
4 are arranged in the front-rear direction, and each shaft 76 is attached to a bevel gear 77.
The bevel gear 78 can be connected to the drive shaft 54. With this structure, the structure for taking out the roll 35 is facilitated, and the maintenance and inspection can be easily performed. In addition, feeding case 3
The side wall of No. 4 and the air chamber 31 are connected by a pipe 79, and when the shutter 80 is opened, the fertilizer in the fertilizer tank 33 can be configured to flow into the air chamber 31 through the pipe 79. When the right end of the air chamber 31 is opened and the recovery bag 74 (FIG. 6) is attached, the fertilizer that has flowed in can be easily recovered.

[Brief description of drawings]

FIG. 1 is a side view in which a part of a rice transplanter according to the present invention is incised.

FIG. 2 is an enlarged rear view of a part thereof.

FIG. 3 is a cut side view of a part thereof.

FIG. 4 is a side view showing the interlocking relationship of the part.

FIG. 5 is a plan view thereof.

FIG. 6 is a perspective view of a fertilizer tank portion of another rice transplanter.

FIG. 7 is a cutaway rear view of a fertilizer tank portion of another rice transplanter.

[Explanation of symbols]

 1 traveling vehicle 2 seedling planting device 6 wheels (front wheel) 7 wheels (rear wheel) 14 drive device (hydraulic cylinder) 24 float 26 groover 29 fertilizer applicator 33 fertilizer tank 36 feeding part 37 hose

Claims (1)

[Claims] 1. A seedling planting device 2 is provided so as to move up and down by a drive device 14 after a traveling vehicle body 1 in which wheels 6 and 7 rotate on a cultivator of a paddy field and moves forward. The float 24 sliding on the mud surface is attached to the seedling planting device 2, and the fertilizer tank 33 of the fertilizer applicator 29 made integrally and the feeding part 36 for feeding the fertilizer therein move vertically to the rear part of the traveling vehicle body 1. And the feeding section 36 attached to the float 24 are connected by a flexible hose 37 so that when the seedling planting apparatus 2 moves up and down, the feeding section 36 moves up and down in the same direction. Rice transplanter with fertilizer application.