JP2923245B2 - Transplant machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanter provided with a ground working device for performing field work prior to planting work.

[0002]

2. Description of the Related Art This type of transplanter is disclosed in, for example,
It is already known in Japanese Patent Application Laid-Open No. 1-22418, (b) Japanese Patent Application Laid-Open No. 62-31704 , and (c ) Japanese Utility Model Application Laid-Open No. 63-31705 .

[0003]

Problems to be Solved by the Invention The above (a) and (b)
In each of them, a planting device and a vertical rotor device as a ground working device are provided in front of a planting claw of the planting device at a rear portion of the traveling vehicle. By driving the device, the irrigated uncultivated land is partially tilled, and seedlings are planted on the tilled portion by subsequent planting claws. It is configured to be driven from the PTO shaft for driving the planting portion provided in the above. On the other hand, the above (c)
A planting device is installed at the rear of the traveling vehicle,
An alternative rotary is installed between the front and rear wheels of the traveling vehicle.
And the substitute rotary and the planting device each have a dedicated drive shaft.
It is designed to be driven from. as mentioned above,
In (a) and (b), since the planting device and the rotor device are driven by the same PTO shaft power, a heavy load is applied to the PTO shaft, and if an excessive load is applied to one of the two devices. There is a problem that the other device is not driven smoothly. In the case of (c), the planting device and the rotary
Each is driven by a dedicated drive shaft.
However, the drive system for driving the ground
Consideration has not been given and the drive mechanism must be strong.
There is a problem such as not.

In view of the above problems, the present invention has an effect on the driving of the other device between the planting device and the ground treatment device provided at the front of the planting device even if an excessive load is applied to the other device. it is no, drive Rutotomoni a situation can be prevented that or cause damage or have a significant burden on the driving system of the planting device, a ground work apparatus from the rear-wheel drive sequence by ground work apparatus
The operation of the ground actuator with high load
And smooth, it is an object to provide a transplantation machine which can be efficiently performed planting work.

[0005]

According to the present invention, there is provided an implanting machine for arranging a plurality of implants at a lateral interval on an implanting device to be pulled rearward of a traveling vehicle. And a seedling table is provided at a position facing the planting body, and a field work is performed in front of the planting device prior to a planting operation of a planting claw provided on the planting body. A ground work device is integrally provided, and the power of the ground work device is obtained by branching the power of the drive shaft of the rear wheel drive system of the traveling vehicle different from the drive system of the planting device. It is.

In addition, 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 the power of the drive shaft of the rear wheel. And a transmission lever of the transmission is provided near the driver's seat.

[0007]

When the traveling vehicle that pulls the planting device travels on the road, the drive system of the ground work device that separates and drives the power of the drive shaft of the rear wheel drive system of the traveling vehicle is separated. Stop device rotation. Further, when performing transplantation work in the field, the drive system of the ground work device is connected to the power of the drive shaft of the rear wheel drive system, and the ground work device is smoothly placed without imposing a large load on the drive system of the planting device. Can be driven.

In the case where a 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 grooving tool of the ground working device. Sometimes, the speed change lever is operated to change the speed in accordance with the conditions of the field, the rotation speed of the ground working device is adjusted to an optimum state, the field is processed by the ground working device prior to the planting operation, and then the planting device is used. Seedlings can be transplanted effectively.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a transplanter according to an embodiment of the present invention. The traveling vehicle 1 constituting the transplanter has a traveling device including a front wheel 2 and a rear wheel 3 as shown in FIGS. 1 and 2, and the power of an engine 4 provided at a front portion is transmitted by a transmission case 5 by a transmission case 5. And a body (or tractor) of the riding rice transplanter distributed to the PTO shaft protruding rearward,
The planting device 8 is provided with a top link 6 and a lower link 7 at the rear.
Is mounted so that it can be moved up and down. The rear wheel 3 is configured to be driven by the transmission shaft 51.

As shown in FIG. 3, the 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, and the main transmission case 10 allows the input shaft to be held in a holding cylinder 11a. A plurality of planting transmission cases 11 transmitted via the horizontal axis, a planting body 13 having a planting claw 12 at the tip and moving up and down, and a reciprocating left and right located in front of the planting 13 And a moving seedling table 14. As shown in FIG. 2, the lower part of only the planting transmission case 11 at both ends is provided with a side sliding body 15 made of a float while sloping the wheel mark of the rear wheel 3, and a rear part thereof is adjustable by a link 16. As shown in FIG. 3, the front part is connected to the front part so as to be able to move up and down by a V-shaped link 17. And in the lower part of the central planting transmission case 11, the front and rear length is short so as not to hinder the ground slide 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
The center glider 15a, which is about mm higher, is mounted as needed.

An arm 20 fixed to an intermediate portion of a lateral rod 18 integrally connecting the front portion of the side sliding body 15 to the left and right is provided with a hydraulic cylinder for raising and lowering the planting device 8 through a plurality of links 19. By being linked to the control valve, the planting depth is controlled to be constant in conjunction with the integral sensing operation of the left and right side sliding bodies 15,15. Reference numeral 21 shown in FIGS. 2 and 4 denotes a connecting frame, which is composed of a vertical frame plate 22 projecting obliquely forward and upward from the planting transmission case 11 and a horizontal frame 23 formed of a pipe connecting the front portions thereof. As shown in FIG. 3, a rolling pipe 27 welded to a lower portion of a connecting bracket 26 is rotatably fitted to a rolling shaft 25 protruding forward from the center of the horizontal frame 23.

As shown in FIG. 4, both sides of a horizontal frame 30 fixed to a lower portion of the lower surface of the seedling mounting table 14 and connected to a slide bar 28 protruding from the main transmission case 10,
A spring stay 31 erected on the connection bracket 26 is connected by a pair of left and right springs 32 to absorb a load variation when the seedling mounting table 14 moves laterally. However, a rolling spring that connects the lower side of the spring stay 31 and both sides of the horizontal frame 23 and urges the planting device 8 to a neutral state, which is generally adopted in a rice transplanter, is omitted. Therefore, the planting device 8 is lowered, and when the left and right side sliding bodies 15 are in contact with the ground, the side sliding bodies 15 are within a certain range.
Rolling freely around the rolling shaft 25 while following the field scene in a state supported by, so that when it is in the ascending position, it is rolled and locked in a state parallel to the traveling vehicle by a rolling restriction device (not shown). Has become.

Further, the planting transmission cases 11 on both left and right ends.
A rear stay 35 is fixed to an outer surface of the front stay, and a front stay 37 which can be turned in the vertical direction by a knob 36 is connected to a front portion of the rear stay 35.
The height of the front of 37 can be adjusted up and down with respect to the rear stay 35. The front stay 37 is provided with a rotary groove cutter which is an embodiment of the ground working device of the present invention. As shown in FIG. 40 is rotatably supported, and a disc-shaped groove is provided at a position corresponding to the planting line of the planting strip formed by the planting claw 12 supported by the planting body 13 of the groove cutting shaft 40. A hexagonal hole drilled at the center of the cutting cutter 41 is fitted, each groove cutting cutter 41 is positioned by a sleeve 43 interposed therebetween, and a center stay 43 whose lower part is fitted to a sleeve 42 located in the middle. A vertical slot 45 is provided at the top of FIG.
This part overlaps the front end of the rolling shaft 25 and
Up and down adjustment is possible by tightening at 46.

The grooving cutter 41 has a large number of teeth 47 on its outer periphery. These teeth 47 are alternately bent to the left and right to form a set, and a swivel angle is set in the rotating direction. The outer width of the tip of 47 is made slightly smaller than the outer width of the planting claws 12 of the planting body 13. For example, the outer width of the planting nail 12 is 14 mm,
When the inner width was 11 mm, the outer width of the set of the groove cutter 41 was 8 mm, and the mutual opening angle of the right and left bent teeth 47 was 30 degrees. If the opening angle is too large, the wrapping of straw or the like increases, and if the opening angle is too small, the desired groove width cannot be obtained.
Twelve resistances tend to be large.

FIGS. 5 and 6 show a drive unit of the grooving cutter. FIG. 5 is a sectional side view of a main part, and FIG. 6 is a developed view of the drive unit of the grooving cutter. A transmission 52 is fixed to the side of the rear axle case 62, and a sprocket 51 is attached to a transmission shaft 51 to the rear wheel 3.
a is provided. This transmission 52 has an input shaft 58 and an output shaft.
59, and a speed change gear 60 connecting between them. A sprocket 58a is fixed to an end of the input shaft 58, and the power of the transmission shaft 51 is transmitted by a chain 53.

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

Also, a grooving cutter adjacent between the central strips
A transmission case 63 for the grooving cutter 41 is attached to the space 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 meshed with each other. A second universal joint is provided between the shaft 64 and the transmission shaft 54. Connected at 65. The groove cutting shafts 40 and 40a are connected by a coupling with the transmission case 63 interposed therebetween. One end of a support 67 is fixed to the transmission case 63, and a bearing 68 is held by a holding portion provided at the other end of the transmission shaft 54 at the other end.
Is maintained at a constant angle α in a plan view.

An end 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 connected to a bracket 57a provided on a rear wheel shaft case 62.
And is retained below and extends below the rear step. Therefore, the transmission gear 60 is
To rotate the grooving cutter 41 at low speed, neutral or high speed. FIG.
The device shown in Fig. 1 illustrates an example in which the grooving cutter 41 is in a low-speed reverse rotation state, a neutral rotation-enabled state, and a high-speed state. It may be discharged backward. Also,
The speed change lever 57 is provided to extend downward near the driver's seat so that the operation can be easily performed.

FIG. 7 shows the transmission shaft 54 drawn by a solid line showing the ascending state of the planting apparatus 8, and the dotted line shows the descending state, that is, the planting state. The second universal joint 65 is supported by a support 67, and as shown in FIG. 6, the angle α between the transmission shaft 54 and the shaft 64 in a plan view is kept constant.

Next, the method of operating the transplanter will be described.
Water is introduced into a no-till field where the culm has been harvested with a combine, etc., so that water has penetrated into the soil, or in an appropriate flooded state. The planting depth is indicated by a scale on the lever guide 50 (FIG. 3). By turning the planting lever 48 up and down while watching, the side sliding body 15 is moved up and down to be set at 3 to 4 cm and fixed.

When the front stay 37 is tilted up and down, the depth of the groove (the lower end of the grooving cutter 41) is lower than the lower limit of the lowering of the planting claw 4 by four.
cm so as to be deeper, but tighten the bolts (however,
The groove can be set deeper when there are many things, such as cut straw, which are entangled with the teeth 47 of the grooving cutter 41, or when the field scene is hard, for example). When the front is raised by the lever 15b (FIG. 1), the mating seedlings are stored in the seedling mount 14 and the aircraft is advanced while the planting device 8 is driven. Wheel 3
Slides on the portion of the stubble that has been pushed down into the soil and pushed into the soil, and the grooving cutter 41 rotates and enters the soil by the weight of the planting device 8 and rolls.

Then, a grooving cutter is operated by the power branched off from the transmission shaft 51 of the rear wheel 3 by operating the transmission lever 57 behind the driver's seat at a low speed or a high speed in accordance with the conditions of grooving such as hard and soft in the field and transplanting. The seedlings can be transplanted in an optimal state while driving 41. As a specific example of the operation of the transmission 52, when the length of the straw is short and large, the grooving cutter 41 is driven at a high-speed reverse rotation so as to remove the straw 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 long straw is present, push the long straw into the field while making it idle and preventing winding of the straw around the cutter,
Planting with a small groove width. The rotation speed of the grooving cutter 41 is switched according to the conditions of the field, such as.

[0023]

As described above, in the transplanter according to the present invention, a plurality of implants are arranged at intervals in a lateral direction in an implanter to be pulled rearward of a traveling vehicle, and these implants are disposed. And a ground working device for integrally performing a field work prior to a planting operation of a planting claw provided on the planting body is provided in front of the planting device. Since the power of the ground working device is obtained by branching out the power of the drive shaft of the rear wheel drive system of the traveling vehicle different from the drive system of the planting device, the following effects can be obtained. it can.

The drive systems of the ground operating device and the planting device are respectively
Because they are driven differently, the ground working device is independent of the power of the planting device, and places a great burden on the driving system of the planting device or damages the driving system of the planting device. The drive transmission to the planting device and the ground work device can be performed satisfactorily without fear. That is, even if an excessive load is applied to one device, the driving of the other device is not affected, and the two devices can be driven smoothly from start to finish, so that the planting operation can be performed efficiently. In particular, the operation of ground work equipment
Power can be extracted by splitting the power of the drive shaft of the rear wheel drive system.
With this, high torque power transmission becomes possible,
The ground work equipment can be driven smoothly and
Coupled with the proximity of the wheel drive system and ground work equipment
Thus, the driving mechanism can be simplified. Also, ground
Since the working device is provided integrally with the planting device,
Adjust the planting and ground work equipment together when adjusting the
Can be adjusted, can do proper planting work
And lift both devices together when the aircraft moves around.
Work efficiency can be raised
You .

Further, 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 the power of the drive shaft of the rear wheel. And by providing the shift lever of the transmission in the vicinity of the driver's seat, it is possible to adjust the drive speed of the ground work device according to the conditions of the field by operating the shift lever during transplantation. In addition, when traveling on the road, by setting the shift lever to the neutral state, it is possible to travel safely with the ground work device stopped. Further, since the shift lever is provided near the driver's seat, it can be easily operated in accordance with the transplanting operation in the field.

[Brief description of the drawings]

FIG. 1 is a side view of a no-till 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 to the grooving cutter.

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

FIG. 7 is a view showing an inclined state of a transmission shaft accompanying the vertical movement of the planting section.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling vehicle (drive body) 6 Top link 7 Lower link 8 Planting device (working machine body) 10 Main transmission case 11a Holding cylinder 12 Planting claw 40 Groove cutting shaft (working machine driving horizontal shaft) 41 Groove cutting cutter (work) 51) Transmission shaft 51a Sprocket 52 Gearbox (transmission) 53 Chain 54 Second transmission shaft 55 First universal joint 56 First transmission shaft 56 Shift lever 57a Bracket 58 Input shaft 58a Sprocket 59 Output shaft 60 Transmission gear 61 shifter 62 rear wheel axle case 63 transmission case 64 axle 65 second universal joint 67 support

Claims (2)

(57) [Claims] 1. A planting device towed behind a traveling vehicle,
A plurality of planting bodies were arranged at intervals in the horizontal direction, and a seedling mounting table was provided at a position facing the planting bodies, and provided on the planting body in front of the planting device. A ground work device for performing field work prior to the planting operation of the planting claws is integrally provided, and the power of the ground work device is set to a rear wheel drive of the traveling vehicle that is different from a drive system of the planting device. A transplanter characterized by branching out the power of the drive shaft of the series. 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 the power of the drive shaft of the rear wheel. The ground working device is provided by an output shaft of the transmission. 2. The transplanter according to claim 1, wherein the transmission is driven and a transmission lever of the transmission is provided near a driver's seat.