JPH1052106A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the following problems that seedlings are not certainly planted and become floating seedlings or have undesirable planted poses caused by contamination of straw dusts in plowed soil when a field in which straw dusts, straw stumps, weeds, etc., are left is plowed by a plowing nail capable of plowing the field from the fore part to the rear part by rotating around a shaft oriented to left and right directions in a seedling transplanter which plants seedlings during plowing the field after carrying out a harvesting work of rice by a combine harvester, etc., to save man power needed for transplanting paddy-rice seedlings. SOLUTION: This seedling transplanter is installed with a plowing device 3 capable of plowing a planting spot of a seedling planting device 4 before planting the seedling. The plowing device 3 has a plowing nail which is constituted to plow a field by revolving around a shaft 66 oriented to left and right directions from the fore part to the rear part of the field in the direction of travel and a removing device 69 for removing straws and weeds in the spot plowed by the plowing device 3 in front of the plowing device 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter for planting seedlings while plowing a field.

[0002]

2. Description of the Related Art Conventionally, in order to save labor related to transplanting rice seedlings, there is a seedling transplanter configured to plant seedlings while plowing a field after harvesting rice with a combine or the like.

[0003]

However, the above-mentioned seedling transplanter is to plant seedlings in a field where straw chips, straw stumps, weeds and the like after harvesting with a combine or the like remain, and the straws and the like are transferred from the front side. When tilling with the tilling claw that plows by rotating and moving around the axis in the left and right direction to the rear, straw and the like are mixed in the soil at the tilled position, and when seedlings are planted in that part, seedlings Can not be planted reliably, resulting in floating seedlings or poor planting posture.

[0004]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems, and the structure of the present invention is as follows. That is, a seedling transplanter provided with a plowing device 3 that plows the seedling planting position of the seedling planting device 4 before planting the seedlings. The plowing claw 67 is configured to plow the field by rotating and moving about a horizontal axis 66 from the front side to the rear side in the traveling direction of the seedling transplanter, and to plow the field in front of the plowing device 3. The structure of the seedling transplanter is provided with an elimination tool 69 for eliminating straw, weeds, and the like at the position where the raising device 3 plows.

[0005]

According to the seedling transplanter of the present invention, the seedlings are planted by the seedling planting device at the plowed position by rotating the plowing claw of the plowing device from the front side to the rear side around the left-right axis. .
Therefore, since the plow is rotated from the front side to the rear side by the plowing device, straw or the like remaining in the field scene is mixed into the soil, but this seedling transplanter eliminates straw and weeds. Since the tools are provided, straw, weeds, and the like are not mixed in the soil at the position plowed by the plowing device.

[0006]

Thus, the seedling transplanter according to the present invention can be used for seedlings without mixing straw, weeds, etc. in the soil at the plowed position, even if the plowing claw rotates from the front side to the rear side. Can be planted, and floating seedlings and poor planting posture can be prevented, and the seedlings can be planted reliably in the field.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A no-tillage rice transplanter, which is a kind of a seedling transplanter of the present invention, will be described with reference to the drawings. FIG. 1 shows a riding-type non-tilling rice transplanter 1, which is mainly composed of a traveling vehicle body 2, a partial tillage device 3, and a six-row seedling planting device 4. . The non-tilling rice transplanter 1 is mounted with a hydraulic raising / lowering cylinder 5 via a raising / lowering link mechanism 6 provided at a rear portion of the traveling vehicle body 2 so as to be able to move up and down the seedling planting device 4. And a partial tillage device 3 is attached via a frame 7.

The traveling vehicle body 2 is provided with a pair of left and right rollers 8L and 8R as traveling propulsion bodies.
The vehicle travels by driving 8L and 8R. This Crawler-8L,
8R, the left and right drive wheels 11, 1 are respectively driven by separate hydraulic left and right continuously variable transmissions 10L, 10R in which the power of an engine 9 mounted on the traveling vehicle body 2 can be operated in forward and backward stepless speed change operations.
, The driving wheels 11 and 11 and the rear driven wheel 1
Crawler wound around 2,12 and rolling wheels 13, ...
8L and 8R are driven and rotated. Usually, the left and right widths of the rollers 8L and 8R are 25 to 45 cm. A power take-off shaft (PTO shaft) 14 for transmitting power from the engine 9 via a gearbox (not shown) and outputting the power as rotational power is provided at a rear portion of the traveling vehicle body 2.
Is provided. The rotation speed of the power take-off shaft 14 is proportional to the rotation speed of the engine 9.

The hydraulic type continuously variable transmissions 10L, 10R
Drives the input shafts of the hydraulic continuously variable transmissions 10L and 10R by the power of the engine 9, and outputs the output motor 10L.
a, 10Ra to drive the drive wheels 11, 11. Further, the traveling vehicle body 2 is provided with a control seat 16 covered by a cabin 15, and left and right traveling levers 17 L, 17 R capable of continuously changing the driving of the left and right rollers 8 L, 8 R are provided on the front side thereof. ing. That is, the hydraulic continuously variable transmissions 10L, 10R are operated by the left and right traveling levers 17L, 17R. The shift levers 10Lb, 10R of the traveling levers 17L, 17R and the hydraulic stepless transmissions 10L, 10R.
b are connected by push-pull wires 18 and 18 respectively, and the gear ratios of the hydraulic stepless transmissions 10L and 10R can be adjusted by running levers 17L and 17R. By operating the traveling levers 17L and 17R, the traveling body 2 can be moved forward and backward, stopped, and steered right and left.

Therefore, when the vehicle is going straight, such as during a normal operation, the operator grasps the respective gripping portions of the left and right traveling levers 17L, 17R simultaneously with one hand so that the left and right crawlers 8L, 8R can be held.
The drive of R is operated so as to have the same speed. A throttle lever 19 is provided to the left of the running levers 17L and 17R, and the number of revolutions of the engine 9 is adjusted by the throttle lever 19.

A PTO speed change lever 20 is provided on the right side of the running levers 17L and 17R.
0 allows the power transmission ratio of the gearbox for transmitting power to the power take-off shaft 14 to be switched between three stages: high speed, low speed, and stop. A planting / elevating lever 21 is provided on the right side of the control seat 16. By operating the planting / elevating lever 21, the elevating link mechanism 6 is moved up and down by the hydraulic elevating cylinder 5, and the partial plowing device 3 is operated. The seedling planting device 4 is moved up and down, and the driving of the seedling planting device 4 can be turned on and off.

Work steps 22 are provided on the left and right sides and rear side of the cabin 15 of the body. Since the left and right work steps 22L and 22R extend to the front end of the vehicle body, getting on and off the vehicle body is not limited to the left and right sides of the vehicle body.
You can get on and off from the front of the aircraft. On the left and right sides of the front of the vehicle body, spare seedling mounting tables 23 for supplying seedlings to the seedling planting device 4 are provided. The seedling replenishment from the spare seedling mounting table 23 to the seedling mounting table 51 of the seedling planting apparatus 4 is performed by the rear work step 22B.
The work can be performed by placing the foot on the work step 22B on the rear side.
It can be safely performed without being caught in the transmission portion of the traveling vehicle body such as the crawler covered with the vehicle. In addition, the upper surface of these work steps 22 is provided with irregularities so that the worker does not slide his / her feet.

A power take-off shaft 14 at the rear of the traveling vehicle body 2
The rotational power is branched and transmitted to the two shafts through the belts 24a, 24b and the pulleys 25, 26, 27, and one of the two shafts is an inter-stock adjusting case 28, and a planting clutch case capable of turning on and off the transmission. , The power is transmitted to the seedling planting device 4 via the planting transmission shaft 30, and the other is configured to transmit power to the partial plowing device 3 via the plowing transmission shaft 31. .

That is, as shown in FIGS. 5 and 6, the double pulley 25 of the power take-off shaft 14 is connected to a transmission belt 23 for driving the seedling planting device and a transmission belt 24 for driving the partial plowing device. Then, a tillage transmission shaft drive pulley 27 which rotates integrally with the inter-stock adjustment case input pulley 26 and the tillage transmission shaft 31 is driven. The tillage transmission shaft drive pulley 27 is a double pulley, and drives a hydraulic pump 33 from the other side via a hydraulic pump drive transmission belt 32. In addition, this hydraulic pump 3
Reference numeral 3 denotes a hydraulic pressure source of the hydraulic lifting cylinder 5.

On the other hand, the inter-regulation case input pulley 26
Is transmitted to the inter-stock adjusting case 28.
The inter-stock adjusting case 28 is a hydraulic continuously variable transmission for driving the seedling planting device, and is interlocked with the gear ratio of the hydraulic continuously variable transmission 10R for driving the right-hand side of the traveling vehicle body 2. The speed ratio is set so as to be in proportion to the running speed of the seedling planting device 4 with respect to the running speed of the machine body while the PTO speed lever 20 is fixed at the high speed position or the low speed position. The speed is always proportional. As shown in FIG. 4, the specific structure thereof is as follows: a shift operation arm 10Rb of the hydraulic continuously variable transmission 10R for driving the right crawler and a shift operation arm 28a of the inter-stock adjusting case 28. Are connected by a push-pull wire 34, and the inter-stock adjusting cable is interlocked with the operation of the hydraulic continuously variable transmission 10R for driving the right crawler.
The gear shift operation arm 28a of the gear 28 is operated. In this embodiment, the hydraulic continuously variable transmission for driving the seedling planting device is operated in conjunction with the operation of the hydraulic continuously variable transmission 10R for driving the right crawler.
The hydraulic continuously variable transmission for driving the seedling planting apparatus may be operated in conjunction with the operation of the hydraulic continuously variable transmission 10L for driving the left crawler.

Power is transmitted from the inter-stock adjusting case 28 to the planting clutch case 29 by the coupling 28c. The planting clutch case 29 is a planting clutch pin 2
9a can be turned on and off by moving the transmission 9a into and out of the case.
9a is operated via a planting clutch wire 29b and a planting clutch operating arm 29c connected to the planting / elevating lever-21. An output shaft 29d of the planting clutch case 29 is connected to a planting transmission shaft 30 having a universal joint.

Therefore, the seedling planting apparatus 4 is adapted to plant seedlings at a predetermined planting interval irrespective of fluctuations in the running speed of the machine due to the operation of the running levers 17L and 17R. Also, the gear shift operation arm 28a of the inter-stock adjusting case 28.
Are provided in a plurality of positions, and by changing the mounting position of the shift operation arm 28a of the push-pull wire 34, it is possible to adjust the planting interval of the seedlings. Has become.

By the way, the inter-stock adjusting case 28, the planting clutch case 29 and the bearing 31a on the input side of the tillage transmission shaft 31 are provided with upper and lower mounting pins 36, Frame frame 3 attached by 36
7. The frame frame 37 is formed by connecting the ends of four front, rear, left and right frames extending rearward to another four frames.
It is configured to be connected in a square shape in rear view with a system. That is, the frame frame 37 has two upper frames 38, 38 and two lower frames 39, 39, each of which extends forward and backward.
And the upper frame 38, 38 or the lower frame 3
Lateral frames 40, 41 welded to 9, 39 respectively
And two vertical frames 42, 42 welded to the horizontal frames 40, 41, and plates 43, 44 fixed to these frames. Therefore, by attaching the frame frame 37 to the working machine mounting portion 35 with the upper and lower mounting pins 36, 36, the power transmission portion to the seedling planting device 4 and the partial tillage device 3 can be attached and detached. Can be easily replaced with a working device or the like, and the versatility of the traveling vehicle body 2 is improved. The raising and lowering link mechanism 6 for raising and lowering the seedling planting device 4 and the partial tillage device 3 is provided by the vertical frames 42 and 4.
2, the inter-stock adjusting case 28 and the planting clutch case 29 are detached from the elevating part by the hydraulic elevating cylinder 5, and the inter-stock adjusting case 28 and the planting clutch case 29 are moved up and down by the hydraulic pressure. The load on the hydraulic lift cylinder 5 is reduced by preventing the cylinder 5 from moving up and down.

The seedling-planting device 4 is mainly composed of a seedling-mounting table 51, a planting transmission section 52, and a seedling-planting mechanism 53 of each section. The planting transmission shaft 3 is driven by power from the traveling vehicle body.
0 to the planting transmission unit 52 to operate. Each of the seedling planting mechanisms 53,... Is operated by the power from the planting transmission unit 52, and the seedlings on the seedling mounting table 51 are planted one by one in the field. The spacing between the seedling planting mechanisms 53,... Of the respective strips in the left-right direction, that is, the spacing between the seeding strips is 30 cm.

In the lower part of the seedling planting apparatus 4, a center float 54 is provided at the center and side floats 5 are provided at both sides.
5, 55, and these floats 54, 55,
Reference numeral 55 denotes a configuration for sliding in a field scene. The center float 54 is provided so as to rotate around a pivot shaft in the left-right direction. Above the float 54, a float for detecting the front-back inclination angle of the float 54 is provided. An angle sensor 54a is provided. Therefore, during the normal planting operation, the planting / elevating lever 21 is operated for planting "in" and "down", but the front-back inclination angle of the center float 54 is set to the center flow. And the hydraulic raising / lowering cylinder 5 is operated so that the front-rear inclination angle is set to a predetermined value, so that the seedling planting section 4 is controlled to maintain a constant height with respect to the field scene. Has become.

The seedling mounting table 51 is provided with the seedling planting mechanism 5.
Are provided so as to reciprocate left and right by the power from the planting transmission unit 52 in accordance with the operation of the seedling transmission unit 52. The seedling planting mechanism 53,. …
From each other. The seedling mounting table 51 sequentially transfers mat seedlings to the seedling mounting mechanism side along the seedling mounting table 51 by a seedling feeding belt 57, which is operated by transmission from the planting transmission unit 52 at the left and right moving ends. This is a known configuration.

The right and left crosses of the traveling vehicle body 2
Ground plates 58, 58 are provided behind the wheels 8L, 8R. The leveling plates 58, 58 are provided with the above-mentioned crawler-8.
The track of L and 8R is adapted, and the track of the crawler settled down by the weight of the fuselage and solidified is leveled. Thus, the step in the field scene of the crawler trace is reduced and the unevenness of the topsoil is adjusted to soften the field scene so that seedlings can be properly planted in the crawler trace.

The partial tillage device 3 includes support plates 61, 6
1, 62, 62, supported by a support pipe 63, etc., are provided integrally with the seedling planting apparatus 4, and tillage lines are planted by the seedling planting mechanisms 53 of the seedling planting apparatus 4. A plowing section 64,... Is provided for each row (6 rows) in front of the row, and is configured to plow the soil in front of the seedling planting device 4 where the seedlings are to be planted. The partial tillage device 3 is configured to drive a plowing shaft 66 provided in the left and right direction via the plowing transmission shaft 31 and the plowing transmission case 65 by the power from the traveling vehicle body. . The plow 64 includes a plow 67 fixed to the plow shaft 66. As shown in FIG. 1, the plowing shaft 66 is driven to rotate counterclockwise when viewed from the left side of the machine body, and the plowing claw 67 fixed to the plowing shaft 66 moves from the front side to the rear side in the traveling direction of the machine body. It is configured to rotate around the plowing shaft 66.

Above the plowing section 64 of each strip, the plowing claw 6
A plow cover 68 is provided for each plow so as to cover the plow 7. The plow cover 68 does not scatter the plowed soil that is raised by the plowing claws 67 upward or to the side, and acts so that the plowed soil falls on the plow and covers it. Further, the plow cover 68 prevents the soil from covering the center float and prevents erroneous detection of the float sensor 54a.

In front of the tillage sections 64,... Of the respective strips, straw removal tools 69,. The straw eliminator 69 is in the form of a comb.
Is configured to eliminate the straw at the plowing position from which the plowing is performed. Therefore, it is possible to prevent the straw at the plowing position from being pushed into the soil by the plowing claws 67 of the partial plowing device 3 and to mix it into the soil. This prevents the plant from becoming uncomfortable or having a poor posture. The straw eliminator 69 is supported by a straw eliminator support pipe 69a fixed to the tillage cover 68 of each strip.

A rotatable cylindrical idler wheel 70,... Is provided between the plowing portions 64,. This idle wheel 70,
The outer diameter of the central part is smaller than the outer diameter of the left and right ends near the plowing part of each strip, and during plowing work,
The right and left ends of the idler wheel 70 are brought into contact with the field scene,
Of the tillage does not exceed a predetermined depth, and a space is provided between the central portion of the idler wheel 70 and the field scene, so that straw waste and the like in front of the partial tillage device 3 can be smoothed. , And the waste can be prevented from winding around the plowing claws 67, the plowing shaft 66, and the like. In addition, between the tillage portions 64, 64 where the tillage transmission case 65 is located, the idlers for both sides of the tillage transmission case having the same diameter as the right and left ends of the large idler wheel 70. Wheels 70a, 7
0a is provided.

On both sides of the tillage transmission case 65, straw winding prevention rotating plates 71, 71 are provided. The straw wrap prevention rotating plates 71, 71 have a plurality of projections 71a,
Are provided so as to be rotatable around the cultivation shaft 66. The straw accumulated in front of the cultivation transmission case 65 is pushed into the soil or discharged to the rear to discharge the cultivation transmission. Straw is prevented from accumulating in front of the case 65 and from being wound around both sides of the case 65.

The straw winding prevention rotating plates 71, 71
As shown in FIG. 8, the rotating shafts of the rotating plates 71 are inclined in the left-right direction so as to act on the lower side of the plowing transmission case 65, or as shown in FIG. Alternatively, the outer peripheral portion may be displaced so as to be located below the tillage transmission case 65. With the above configuration, the straw eliminators 69,... Provided in front of the partial tillage device 3 make it difficult for straw to be mixed in the soil cultivated by each of the plowing portions 64,. When planting seedlings in the soil at the cultivated position, the seedlings are planted in the field in an appropriate posture without the planted seedlings becoming floating seedlings or the planting posture becoming worse.

Although the above embodiment relates to a six-row seedling transplanter, the present invention is not limited to the six-row planting.

[Brief description of the drawings]

FIG. 1 is a side view of a non-tilling rice transplanter.

FIG. 2 is a plan view of a no-till rice transplanter.

FIG. 3 is a simplified plan view of a main part showing a configuration of the plowing device and its periphery.

FIG. 4 is a plan view that makes it easy to understand the operation configuration of the inter-stock adjustment case.

FIG. 5 is a side view showing a configuration around a power take-out shaft.

FIG. 6 is a rear view showing a configuration around a power take-out shaft;

FIG. 7 is a rear view showing the rotation plate for preventing winding of straw;

FIG. 8 is a rear view showing another straw wrap preventing rotation plate.

FIG. 9 is a rear view showing another straw-wrap prevention rotating plate.

[Explanation of symbols]

1 ... no tillage rice transplanter (seedling transplanter) 3 ... partial tillage device 4
... seedling planting equipment, 66 ... tillage shaft, 67 ... tillage nails, 69 ... straw removal tool

Claims (1)

[Claims] 1. A seedling transplanter provided with a plowing device (3) for plowing a seedling planting position of a seedling planting device (4) before planting seedlings. And the plow 6
Numeral 7 is configured to plow a field by rotating and moving about a horizontal axis 66 from the front side to the rear side in the advancing direction of the seedling transplanter, and to plow the plowing device 3 in front of the plowing device 3. A seedling transplanter comprising an elimination tool 69 for eliminating straw, weeds, and the like at a tilling position.