JP3371432B2 - Seedling machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter for transplanting seedlings on ridges covered with a multi-film. 2. Description of the Related Art In a seedling transplanter for transplanting seedlings on a ridge covered with a multi-film, as shown in Japanese Patent Application Laid-Open No. 2-222603 and others, a hole is formed in the ridge with a bore and planted. A seedling is to be transplanted into the hole by the attachment. [0003] In the above-described prior art seedling transplanter, the planting device must plant the seedlings accurately at the positions of the holes drilled by the drilling device. When the planting position was shifted from the planting device, the edge of the multi-film came into contact with the planted seedlings, which sometimes caused a growth failure of the seedlings called leaf burning. [0004] In order to solve the above problems, the present invention comprises a front wheel 3 and a pair of left and right rear wheels 4.
An engine 5 on the front side and a seedling plant 9 on the rear side;
The planting device 9 draws a predetermined loop locus 16 in a side view.
Is provided, and the implant 8 is moved in the left-right direction.
It is arranged between a pair of right and left rear wheels 4 and the planting tool 8 is viewed from the side.
Holes in the multi-film 28 in front of the loop locus 16
A hole body 23 for opening the plant is provided.
3 in a side view, near the axle of the rear wheel 4 and rearward from the axle
At the back of the planting device 8.
By the vertical movement of the pressure wheel 29 with respect to the body, the implant 8 and
And the drilling body 23 at the predetermined ground height with respect to the field scene
Move the pair of left and right rear wheels 4 up and down with respect to the aircraft to control
The seedling transplanter was characterized by having a configuration in which the seedling was planted. [0005] This seedling planter is provided with a seedling provided on the rear side in the hole of the multi-film formed by the drilling body, while driving the front wheel or the rear wheel by the power from the engine provided on the front side to run the machine body. The seedlings provided in the planting equipment plant seedlings. Moreover, the so arranged between the rear wheels of the left-right pair of planting tool in the horizontal direction, since the rear wheel by the vertical movement of the crush wheel moves up and down relative to the fuselage, the planting device as well as the front thereof with respect to the field plane The height of the bored body with respect to the field scene is stabilized at a predetermined height. Further, the front wheel, so that by placing the planting tool and drill body near the rear wheel provided between the front wheel and the repression wheel in a side view of the ground wheel composed of a rear wheel and put down wheels, Even if the rear wheel moves up and down with respect to the body, the height of the planting tool and the drilling body with respect to the field scene and the positional relationship between them in the left-right direction are stabilized. According to the first aspect of the present invention , the engine and the seedling plant, which are heavy objects, are arranged in front and rear, so that the weight balance of the body in the front-rear direction can be improved, and the planting implement can be improved. Seedlings can be stably planted. Furthermore, since the positional relationship of the planting tool and the borer in the left-right direction with respect to the field scene is stable, the positional relationship between the position of the hole drilled by the borer in the field and the position at which the seedling is planted by the planting tool is determined. The seedlings can be stably planted in the holes formed by the drilling body. Next, an embodiment of the present invention will be described. FIG.
As shown in FIG. 1, the traveling vehicle body 1 includes a pair of drive wheels 3 and idler wheels 4 before and after straddling the ridge 2, and the drive wheels 3 receive the rotation of the front engine 5 via the centrifugal clutch 6. It is designed to rotate. Accordingly, the drive wheels 3 are a pair of left and right front wheels, and the idle wheels 4 are a pair of left and right rear wheels. The front wheels that are the drive wheels 3 are driven by the power from the engine 5 to travel. [0008] A seedling plant 9 is composed of a seedling mounting table 7 and a planting rod 8 serving as a planting tool. As is well known, the seedling mounting table 7 mounts a group of seedlings grown in a rectangular shape, and a pair of front and rear rails 10.
, And is supported by the traveling vehicle body 1 to move left and right, and the rotation of the engine 5 transmitted via the centrifugal clutch 6 is forcibly reciprocated right and left by the rotation of the lead cam 11. Then, the belt conveyor 12 constituting the bottom pivots when the seedling mounting table 7 reaches the left and right lateral ends,
The seedlings on it are sent to the right. The planting rod 8 has a pair of plates that open and close left and right, and is attached to the second turning case 13. The second turning case 13 is attached to the end of the first turning case 14.
When turned in the clockwise direction around, the case 13, 14 is turned counterclockwise, and the respective cases 13 and 14 are configured to be vertically long and folded left and right. Then, regardless of the turning, the planting rod 8 always moves up and down in the same posture, and operates so as to draw a predetermined loop trajectory 16 which is long vertically in side view. When the planting rod 8 descends, it passes through the right end of the seedling mounting table 7 and takes out seedlings of one plant from the group seedlings on the right.
The seedlings are to be inserted and planted in holes described later. A pair of left and right soil covering pressure rings 29 rotating on the ridge 2 provided on the rear side of the planting rod 8 and rotating on the ground are used to cover the seedlings planted while the holes in which the planting rods 8 plant the seedlings are covered. The surrounding area is crushed, and the roots of the planted seedlings are firmly fixed and the planting posture is stabilized. A borer 17 is provided in front of a lower portion of a predetermined loop locus 16 drawn by the planting rod 8. That is, as shown in FIG. 2, a pair of upper and lower links 18 and 19 project rearward from the bracket 20, and the rear ends thereof are connected by the mounting rod 21. A heat insulator 22 is fixed to the rear side of the mounting rod 21, and a bar-shaped hole 23 having a slightly pointed tip is fixed below the heat insulating body 22. A heater 24 is embedded in the hole body 23 and is heated to about 200 ° C. The negative electrode of the heater 24 is connected to the body earth, and the positive electrode is connected to the battery of the traveling vehicle body 1 via a switch operated by a thermostat or a switch operated by a manual. The protruding end of the link 18 is pulled downward by the spring 56 so that the mounting rod 21 and the hole 23 are raised. A roller 25 is provided in the middle of the link 18,
The drive wheel 26 rotates in synchronization with the planting rod 8 and is pushed down by the cam 27. That is, when the roller 25 is depressed by the counterclockwise rotation of the cam 27, the rear ends of the links 18 and 19 are lowered, and the lower end of the hole body 23 penetrates the multi-film 28 covering the ridge, and Piercing the upper surface of the vehicle body, making a hole so as to scrape the soil as the traveling vehicle body 1 advances, and then ascends. As described above, the planting rod 8 inserts a seedling of one strain into the hole. After that, a pair of left and right covering soil pressurizing wheels 29 (FIG. 1) pass on both sides of the seedling, and the left and right soils are pressed against the seedling and pressed.
When the hole body 23 makes a hole in the ridge, the hole body 23 is heated to approximately 200 ° C., and pierces the multi-film 28 and moves forward. In the film 28, a hole having a smooth surrounding is formed. Therefore, since the opening in the multi-film 28 and the opening in the ridge are simultaneously performed by the single hole 23, the configuration is simple and extremely rational. Therefore, the hole 23 is heated to a temperature at which the multi-film 28 is melted, and when the hole 23 descends and comes into contact with the multi-film 28 in the field, the hole is formed in the multi-film 28. Is to be opened. As a result, the portion of the multi-film 28 in contact with the hole body 23 is melted, and a smooth hole with a smooth edge is opened.
Then, seedlings are transplanted into the holes of the multi-film 28 by the planting rod 8. Conventionally, in a seedling transplanter for transplanting seedlings on a ridge covered with a multi-film, as shown in Japanese Patent Application Laid-Open No. 2-222603 and others, a nail or knife is pierced into the multi-film and then advanced to advance the multi-film. A hole is formed in the hole, and the seedlings are transplanted into the hole, so that the claw of the hole and the rising edge of the knife are not cut.
For this reason, the film whose three sides have been cut may cover the transplanted seedlings, which may lead to leaflet burning, a growth impairment of the seedlings. However, as described above, since the descending hole body 23 is heated to the temperature at which the multi-film 28 is melted, the film of the perforated portion is connected at the front edge and flickers as in the related art. And no longer covered the seedlings and hindered their growth. As shown in FIG. 1, the planting rod 8 and the hole body 23 are disposed between a pair of left and right idler wheels 4, that is, rear wheels in the left-right direction. In addition, a predetermined loop locus 16 drawn by the planting rod 8 as viewed in FIG.
And the planting rod 8 and the drilling body 23 at the seedling planting position on the lowermost field of the loop locus 16 are arranged near the idler wheel 4 in a side view. . still,
In FIG. 1, the planting rod 8 at the seedling planting position is provided behind the axle of the idler wheel 4, and the hole body 23 is provided near the axle of the idler wheel 4. The planting rod 8 and the hole body 23 at the position are arranged from the vicinity of the axle of the idle wheel 4, that is, the rear wheel to the rear side in a side view. The drilling body 23 has a scraper 3
0 is provided. The scraper 30 has a trumpet-shaped hole at the top, and is attached to the bracket 20 with a rod 31 so that the hole body 23 moves up and down in the hole.
When the hole body 23 rises, a part of the multi-film and soil adhering to the hole body 23 are scraped off at the lower edge thereof. Therefore, providing a plurality of split grooves at the lower end,
A configuration for heating can be adopted. As shown in FIG. 1, the driving wheel 3 and the idler wheel 4
The seedlings are automatically moved up and down according to the height of the ridges 2 so that the planting depth is kept constant. That is, the driving wheel 3 and the idler wheel 4 are attached to the lower end of the chain case 33 and the supporting rod 34 which extend obliquely downward from the body 32, respectively, and move up and down by the rotation of the arms 35 and 36, respectively. I have. A cylinder 37 is attached to the center of the body 32 in the front-rear direction, and a rear end of a piston rod 38 projecting backward from the cylinder 37 is connected to ends of the arms 35 and 36 by links 39 and 40. As shown in FIG. 3, the oil discharged from a pump (not shown) is switched by a valve 41 and reaches the cylinder 37 through an oil passage 42, or the oil in the cylinder 37 returns to the tank. It is supposed to. Automatic switching of the moving from the valve 41 protrudes after valve stem 43, the valve rod 43 back and forth in the vertical movement of the town <br/>圧輪29 you rotate grounded on the ridges 2 To do it. A neutral position is provided in the middle of the above switching. In addition, wire 55
When the valve stem 43 is moved to the left by artificially pulling the oil, the oil is supplied into the cylinder 37, and the respective wheels 3, 4 are lowered. Used. A valve 44 is provided in the middle of the oil passage 42 and is pushed by a spring 45 to close the oil flow. When the lever 46 is turned counterclockwise, the arm 47
Pushes the above-mentioned valve 44 against the spring 45 so that the oil passage 4
2 is opened. As shown in FIG. 1, a throttle lever 50 is provided near a handle 49, and when the throttle lever 50 is pulled backward, the lever 52 of the engine 5 is actuated by the wire 51, and the rotation of the engine 5 becomes high speed, and the centrifugal clutch 6 When the power is transmitted to the driving wheels 3 and the planting rods 8 and returned to the front, the rotation is reduced and the transmitted power is cut off. When the wire 53 extends forward from the throttle lever 50 and is pulled backward (on the high speed side), the tip of the wire 53 moves to the right as shown in FIG. When the arm 47 is turned counterclockwise, the push rod 48 pushes the valve 44 open. When the throttle lever 50 is returned forward from this position, the wire 53 is loosened, the valve 44 is pushed by the spring 45, and the oil passage 42 is closed. The power of the engine 5 is supplied to the driving wheel 3, the planting rod 8,
When the centrifugal clutch 6 is used to transmit the oil to the pump or the like, when the rotation of the engine 5 is lowered, the clutch is disengaged and the rotation of the pump that sends oil to the cylinder 37 stops. At this time, if the oil in the cylinder 37 escapes unexpectedly,
Drops and damages the sensor and others. However, according to the above configuration, when the rotation of the engine 5 decreases,
Since the valve 44 closes the oil passage 42 so that the oil in the cylinder 37 does not fall out, even if the rotation of the pump is stopped, the above-mentioned risk of damage is eliminated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a seedling plant to which the present invention is applied. FIG. 2 is an enlarged cut-away side view of a part of the seedling planter . FIG. 3 is a plan view in which a part of the seedling plant is cut away. [Description of Reference Numerals] 1 vehicle body 2 ridges 3 drive wheels (front wheels) 4 idler wheel (rear wheel) 5 engine 9 NaeUe device 8 Uezuke杆16 loop path 23 Sakuanatai 28 mulch film 29 Town圧輪

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-173006 (JP, A) JP-A-2-222603 (JP, A) JP-A-4-103414 (JP, U) (58) Survey Field (Int.Cl. ⁷ , DB name) A01C 11/00-11/02 303

Claims (1)

(57) [Claims 1] A front wheel 3 and a pair of right and left rear wheels 4 are provided.
And an engine 5 and a seedling plant 9 on the rear side.
The device 9 is designed to draw a predetermined loop locus 16 in side view.
A movable planting tool 8 is provided, and the planting tool 8 is
It is arranged between a pair of rear wheels 4, and the implant 8 is drawn in a side view.
A hole is formed in the multi-film 28 in front of the loop locus 16.
The planting tool 8 and the hole body 23 are provided.
When viewed from the side near the axle of the rear wheel 4
And a compression ring provided on the rear side of the planting tool 8
29, the planting tool 8 and the crop are moved.
The vertical position of the hole 23 is set to a predetermined height above the ground with respect to the field scene.
Move the pair of left and right rear wheels 4 up and down
A seedling transplanter characterized by having a configuration as described above .