JPH08252004A - Non-tillage transplantation machine - Google Patents

Abstract

PURPOSE: To provide a non-tillage transplantation machine free from the trouble of the stop of a rotary furrow opening tool accompanying the stop of a planting apparatus, capable of preventing the application of excessive load on the driving system of the planting apparatus and the damage of the system and capable of smoothly transmitting the driving power to the planting apparatus and the rotary furrow opening tool. CONSTITUTION: A planting apparatus 8 hauled behind a mobile vehicle 1 is provided with a plurality of planting members arranged in the lateral direction interposing spaces. A seedling holding table is positioned opposite to the planting members and a rotary furrow opening tool moving on a planned line for planting with a planting claw 12 of the planting member 8 is placed in front of the planting apparatus 8. The driving power of the rotary furrow opening tool is taken out by branching the power of the driving shaft of a wheel-driving series of the mobile vehicle 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a no-tillage transplanter used for directly planting seedlings by flooding a field without plowing and substituting.

[0002]

2. Description of the Related Art If seedlings can be transplanted to a field in a non-tillage state, the plowing work and the substituting work can be omitted, so that the rice growing work can be remarkably simplified, which makes it old. There was an example of trying to plant a no-till rice field. As a rice transplanter for this no-till rice planting, there is a device that pulls the planting device (working device) of the ordinary rice transplanter installed at the rear of the tractor (traveling vehicle) with some improvements. used. Specifically, a groove-forming device is provided between the tractor and the planting device, and a seedling held between the planting claws of the subsequent planting device is planted in the groove formed by the groove-forming device. The device is employed.

[0003]

Generally used as the grooving device is a rotary grooving tool such as a grooving cutter. This rotary grooving tool is a traveling line of a planting claw. It must be precisely located in front of and forward with this implant. Therefore, the front stays are projected on both front sides of the planting device, the grooving shaft is supported between these front stays, and a grooving cutter is arranged at a predetermined planting interval on the grooving shaft. ing. This groove cutting cutter has a system that is driven as the planting device moves forward, and a system that simply rotates without driving. As the driving method, there are a normal rotation method that discharges the soil that has been ditched backward and a reverse rotation method that is the reverse of this.
In any case, it is more effective to drive the groove cutting cutter in the sense that it can meet all planting conditions. Therefore, the groove cutter is driven.

The present inventor most accurately operates the groove cutting cutter integrally with the planting device as a means for obtaining power for driving the groove cutting cutter. We have developed a device to drive the groove cutting cutter by branching the power of the planting drive system input to.

On the other hand, since the planting claw of the planting device and the planting body supporting the planting claw are composed of delicate mechanisms,
If excessive resistance is applied to this planting claw, it will be damaged or adjustment will be improper. Therefore, in order to protect the various mechanisms described above, a constant load is controlled on the output shaft of the planting drive series transmission. A safety clutch is provided for this purpose.
By the way, in a normal planting operation, since it is to plant in a weakened field, it does not require a large power, and when the power of this planting drive system is branched to drive the groove cutter, There was a problem with the safety clutch engaging. Therefore, by increasing the operating load of this safety clutch, the frequency of its operation is reduced. However, according to this method, power is often transmitted even at a load where the safety clutch should normally operate. This means that the sensitivity of the safety clutch is lowered, and in some cases, the planting claw and the device for driving the planting claw may be damaged, or an accident may occur in which the adjustment is incorrect.

In view of the above problems, the present invention eliminates the possibility that the rotary groove cutting tool will stop due to the stop of the planting device, and gives a large load or damage to the drive system of the planting device. It is an object of the present invention to provide a no-tillage transplanter capable of preventing a situation that may lead to damage and thereby favorably transmitting the drive to the planting device and the rotary groove cutter.

[0007]

In order to achieve the above-mentioned object, a no-tillage transplanter according to the present invention has a plurality of plant bodies laterally spaced from each other in a planting device towed to the rear of a traveling vehicle. The seedling mounting table is provided at a position opposed to the planting bodies, and is moved in front of the planting device on the planned planting line of the planting claws provided on the planting body. A rotary groove cutter is provided, and the power of the rotary groove cutter is extracted by branching the power of the drive shaft of the wheel drive system of the traveling vehicle.

In extracting the power of the rotary groove cutter from the drive shaft of the wheel drive system of the traveling vehicle, the drive shaft of the wheel drive system of the traveling vehicle is used as the drive shaft of the rear wheel,
It is particularly preferable to provide a transmission that branches the power of the drive shaft of the rear wheels, drive the rotary groove cutter by the output shaft of the transmission, and provide a gear shift lever of the transmission near the driver's seat. . As the rotary groove cutter, a rotary claw can be used instead of the groove cutter.

[0009]

When the traveling vehicle towing the planting device travels on the road, the drive system of the rotary groove cutter that splits and drives the power of the drive shaft of the axle drive system of the traveling vehicle is disconnected, and this rotation is performed. Stop the rotation of the grooving tool. In addition, when performing no-tillage transplant work in the field, the drive system of the rotary groove cutter is connected to the power of the drive shaft of the axle drive system without giving a large load to the drive system of the planting device. Can be driven.

In the case where the transmission is provided, when traveling on the road, the transmission lever is operated to set the transmission in a neutral state to stop the rotation of the rotary groove cutter, while the non-tillage transplant work is performed. Operate the speed change lever to change the speed according to the conditions of the field, adjust the rotation speed of the rotary groove cutter to the optimum state, make a groove in the field, and transplant seedlings effectively into this groove. can do.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the no-tillage transplanter of the present invention will be described below with reference to the drawings. Traveling vehicle 1 that constitutes a no-tillage transplanter
As shown in FIGS. 1 and 2, has a traveling device composed of front wheels 2 and rear wheels 3, and the power of an engine 4 provided at the front part is transmitted to the traveling device and a PT projecting rearward by a mission case 5.
The main body (or tractor) of the riding rice transplanter distributed to the O-axis
In addition, the planting device 8 is mounted on the rear side so as to be vertically movable by the top link 6 and the lower link 7. Further, the rear wheel 3 is configured to be driven by the transmission shaft 51.

This planting device 8 has a main transmission case 10 whose input shaft is driven by a PTO shaft via an intermediate shaft 9 and a universal joint as shown in FIG. A plurality of planted transmission cases 11 that are transmitted via a horizontal axis, a planting body 13 that has a planting claw 12 at the tip and moves up and down, and is located in front of this planting body 13 and reciprocates left and right. It is composed of a moving seedling stand 14 and the like. As shown in FIG. 2, the rear wheel 3 is grounded on the bottom of only the planted transmission case 11 on both ends, and the side sliding body 15 made of a float is slid, and the rear part thereof can be adjusted up and down by a link 16. It is pivotally supported, and as shown in FIG. And, in the lower part of the planted transmission case 11, the front and rear lengths are short so as not to impair the ground sliding of the two side sliding bodies 15 and the sensing performance,
And the bottom surface is 5 to 10 mm from that of the side sliding body 15, for example, 7
A center sliding body 15a with a height of about mm is attached as necessary.

An arm 20 fixed to an intermediate portion of a horizontal rod 18 which integrally connects the front parts of the side sliding members 15 to each other on the left and right sides is a hydraulic cylinder for moving up and down the planting device 8 via a plurality of links 19. By interlocking with the control valve, the planting depth can be controlled to be constant by interlocking with the integral sensing operation of the left and right side slides 15,15. Reference numeral 21 shown in FIGS. 2 and 4 is a connecting frame, which is composed of a vertical frame plate 22 projecting obliquely forward and upward from the planted transmission case 11 and a horizontal frame 23 made of a pipe connecting the front portions thereof. As shown in FIG. 3, a rolling pipe 27 welded to the lower portion of a connecting bracket 26 is rotatably fitted to the rolling shaft 25 projecting forward from the central portion of the horizontal frame 23.

As shown in FIG. 4, both sides of a horizontal frame 30 fixed to the lower surface of the seedling mounting table 14 near the lower part thereof and connected to slide bars 28 projecting from the main transmission case 10,
A spring stay 31 erected on the connecting bracket 26 is connected by a pair of left and right springs 32 so as to absorb a load variation when the seedling placing table 14 laterally moves. However, a rolling spring, which is generally used in a riding rice transplanter, for connecting both lower sides of the spring stay 31 and both sides of the horizontal frame 23 to urge the planting device 8 to a neutral state is omitted. Therefore, when the planting device 8 descends and the left and right side slides 15 are in the grounded state, the side slides 15 are kept within a certain range.
While rolling along the field in a state of being supported by the rolling shaft 25, it freely rolls around the rolling shaft 25, and when it is in the raised position, it is rolling locked in a state parallel to the traveling vehicle by a rolling regulation device (not shown). Has become.

Also, the transmission cases 11 with planting on both the left and right ends.
A rear stay 35 is fixed to the outer side surface of the front stay, and a front stay 37 that is vertically rotatable by a knob 36 is connected to the front of the rear stay 35. By tightening the knob 36, the front stay 37 is fixed.
The height of the front part of 37 can be adjusted up and down with respect to the rear stay 35. As shown in FIG. 3, a groove cutting shaft 40 composed of a hexagonal shaft is rotatably supported at the front end portions of these front stays 37, and the planting claws supported by the planting body 13 of the groove cutting shaft 40.
At the position corresponding to the planting line of the planting strip formed by 12, a hexagonal hole drilled at the center of the disk-shaped groove cutting cutter 41 is fitted, and each groove cutting cutter 41 is placed between them. Positioned by the interposed sleeve 43, the sleeve located in the middle
A vertical long hole 45 is provided in the upper part of the center stay 43 (FIG. 4) in which the lower part is fitted to the 42, and this part is formed in the rolling shaft.
It is possible to adjust vertically by overlapping the front end of 25 and tightening it with bolts 46.

The grooving cutter 41 has a large number of teeth 47 on its outer circumference. The teeth 47 are alternately bent to the left and right to form a set, and a retreat angle is given to the turning direction to form the teeth. The outer width of the tip of 47 is made slightly narrower than the outer width of the planting claw 12 of the planting body 13. For example, the outer width of the planting nail 12 is 14 mm,
When the inner width is 11 mm, the outer width of the set of the groove cutter 41 is 8 mm, and the opening angle between the teeth 47 bent to the left and right is 30 degrees. If this opening angle is too large, wrapping of straw or the like will increase, and if it is too small, the desired groove width will not be obtained and the planting nail
12 resistance tends to increase.

FIGS. 5 and 6 show a driving portion of the groove cutting cutter particularly adopted in the present invention. FIG. 5 is a side sectional view of an essential part and FIG. 6 is a developed view of the driving portion of the groove cutting cutter. A transmission 52 is fixed to the side of the rear axle case 62, and a sprocket 51a is provided on a transmission shaft 51 to the rear wheel 3. The transmission 52 includes an input shaft 58, an output shaft 59, and a transmission gear 60 that connects the input shaft 58 and the output shaft 59. A sprocket 58a is fixed to the end of the input shaft 58, and the power of the transmission shaft 51 is transmitted by a chain 53.

The output shaft 59 protruding rearward of the transmission 52
Is a transmission shaft 56 through the universal joint 55 of FIG.
Have been transmitted to. The transmission shaft 56 is formed as a spline, is integrally coupled to another transmission shaft 54 in the rotational direction, and is slidably fitted so as to expand and contract only in the axial direction. As described above, the rear stay 35 is provided in front of the planting device 8.
A groove cutting cutter 41 is mounted on the planned planting line of the planting claw 12 on a groove cutting shaft 40 supported by a front stay 37 connected to the planting transmission case 11 via. The groove cutting shaft 40 is configured such that the front stay 37 provided inside the groove cutting cutters 41 on both sides can be vertically adjusted by operating the knob 36.

Also, a groove cutter adjacent to the central strip
A transmission case 63 for the groove cutter 41 is attached between the threads next to 41 as shown in FIGS. As shown in FIG. 6, the transmission case 63 has a bevel gear 66 fixed to a shaft 64 and a bevel gear 66 fixed to the grooved shaft 40 mesh with each other, and a second universal joint is provided between the shaft 64 and the transmission shaft 54. It is connected at 65. Further, the groove cutting shafts 40 and 40a are connected by a coupling with a transmission case 63 interposed. One end of a support 67 is fixed to the transmission case 63, and the bearing 68 is held at the other end by a holding portion provided at the tip of the transmission shaft 54.
The distance between and is maintained at a constant angle α in plan view.

An end portion of a shifter 61 incorporated in the transmission 52 shown in FIG. 5 is connected to a shift lever 57, and the shift lever 57 is mounted on a bracket 57a provided on a rear wheel shaft case 62.
Is held in engagement with a guide groove of the rear step and extends below the rear step. Therefore, the speed change gear 60
Can be operated to rotate the groove cutter 41 at low speed, neutral or high speed. Note that FIG.
The device shown in (1) has exemplified the one in which the groove cutting cutter 41 is in the low speed reverse rotation state, the neutral self-rotating state, and the high speed state. However, a gear mechanism may be further incorporated to rotate the groove cutting cutter 41 in the forward direction. Further, the gear shift lever 57 is provided so as to extend downward near the driver's seat so that it can be easily operated.

FIG. 7 shows the transmission shaft 54 in a solid line when the planting device 8 is in the raised state, and in dotted lines when the planting device 8 is in the lowered state, that is, the planting state. The second universal joint 65 is supported by the support 67, and as shown in FIG. 6, the angle α in plan view formed by the transmission shaft 54 and the shaft 64 is kept constant.

Next, the operation method of the transplanter will be described.
Water is introduced into a no-tillage field where grain culms have been cut with a combine or the like, and the water has penetrated into the soil or an appropriate flooding condition. The planting depth is the scale of the lever guide 50 (Fig. 3). The side sliding member 15 is moved up and down by rotating the planting lever 48 up and down while setting the height of 3 to 4 cm and fixed.

The front stay 37 is tilted up and down so that the depth of the groove (the lower end of the groove cutting cutter 41) is lower than the lower limit of lowering of the planting claw 12 by 4
Tighten the bolt so that it becomes deeper about cm (however,
It is possible to set the groove to be deeper when there are many things such as straws that are entangled with the teeth 47 of the groove cutter 41, or when the field scene is hard). With the lever 15b (Fig. 1), the front part was lifted to the insensitive position, and the mat seedlings were stored in the seedling stand 14 and the planting device 8 was driven to move the aircraft forward. Ring 3
Moves the stubble into the soil and slides the pushed portion, and the groove cutter 41 rotates and also enters the soil by the weight of the planting device 8 and rolls.

Then, depending on the conditions of grooving such as hard and soft in the field, and operating the speed change lever 57 at the rear of the driver's seat according to the conditions of transplantation, the speed is set to low or high speed, and the groove cutting cutter is driven by the power branched from the transmission shaft 51 of the rear wheel 3. The seedlings can be transplanted in an optimum state while driving the 41. To give a concrete example of the operation of the transmission 52, when the number of straws is short and large, the groove cutter 41 is driven in high speed reverse rotation in order to remove it from the planned planting line. When there is little or no straw, the grooving cutter 41 is driven at a low-speed reverse rotation so that the width of the planting groove is not increased. When the long straw is present, the long straw is pushed into the field while the straw is wrapped to prevent winding of the straw around the cutter, and is planted with a small groove width. .. The rotation speed of the groove cutter 41 is switched according to the conditions of the field.

[0025]

As described above, in the no-tillage transplanter according to the present invention, a plurality of plant bodies are arranged laterally at intervals in the planting device to be pulled to the rear of the traveling vehicle. A seedling mounting table is provided at a position facing the plant, and in front of the planting device, a rotary groove cutter that moves on the planned planting line of the planting claw provided on the plant is provided. Since the power of the rotary groove cutter is extracted by branching the power of the wheel drive system of the traveling vehicle, the following effects can be obtained.

Since the rotary groove cutting device branches the power of the drive shaft of the wheel drive system of the traveling vehicle to obtain power, it has nothing to do with the power of the planting device and is large in the drive system of the planting device. There is no risk of giving a burden or damaging the drive system of the planting device, and the drive transmission to the planting device and the rotary grooving tool can be favorably performed.

Further, a transmission for branching the power of the drive shaft of the rear wheels of the traveling vehicle is provided, and the rotary groove cutter is driven by the output shaft of the transmission, and the shift lever of the transmission is driven. If it is installed near the seat, when transplanting,
By operating the speed change lever, it is possible to adjust the rotational speed of the rotary groove cutter according to the conditions of the field, and when traveling on the road, by setting the speed change lever to the neutral state, the rotary groove It is possible to drive safely with the cutting tools stopped. Further, since the shift lever is provided near the driver's seat, it can be easily operated according to the transplanting work in the field.

[Brief description of drawings]

FIG. 1 is a side view of a no-tillage transplanter.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of a main part.

FIG. 4 is a plan view of the same.

FIG. 5 is a side cross-sectional view of a power transmission unit for the groove cutting cutter.

FIG. 6 is a development view of transmission of an input portion of the groove cutter.

FIG. 7 is a diagram showing a tilted state of a transmission shaft that accompanies a vertical movement of a planting part.

FIG. 8 is a diagram showing a planting drive system in which a safety clutch is interposed.

[Explanation of symbols]

 1 Travel Vehicle (Drive Machine) 6 Top Link 7 Lower Link 8 Planting Device (Work Machine) 10 Main Transmission Case 11a Holding Tube 12 Planting Claw 40 Grooving Shaft (Work Machine Driving Horizontal Shaft) 41 Grooving Cutter (Work) Machine) 51 transmission shaft 51a sprocket 52 gearbox (transmission) 53 chain 54 second transmission shaft 55 first universal joint 56 first transmission shaft 56 speed change lever 57a bracket 58 input shaft 58a sprocket 59 output shaft 60 speed change gear 61 Shifter 62 Rear wheel shaft case 63 Transmission case 64 Shaft 65 Second universal joint 67 Support

Claims (2)

[Claims] 1. A planting device towed behind a traveling vehicle,
A plurality of planting bodies are arranged at intervals in the lateral direction, a seedling table is provided at a position facing the planting bodies, and the planting body is provided in front of the planting device. A rotary groove cutter that moves on the planned line of planting claws is provided, and the power of the rotary groove cutter is extracted by branching the power of the drive shaft of the wheel drive system of the traveling vehicle. No-till transplanter. 2. A drive shaft of a wheel drive system of the traveling vehicle is used as a drive shaft of a rear wheel, and a transmission is provided for branching power of the drive shaft of the rear wheel, and the rotary groove is provided by an output shaft of the transmission. The no-tillage transplanter according to claim 1, wherein a gear shift lever of the transmission is provided near a driver's seat while driving the cutting tool.