JP3850334B2 - Rice transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rice transplanter provided with a drawing marker that supports a planting portion at a rear portion of a traveling machine body so that the planting portion can be moved up and down and moves up and down in conjunction with the raising and lowering of the planting portion.
[0002]
[Prior art]
Conventionally, in rice transplanters, drawing markers are provided on both sides of the traveling machine body or planting part, and during planting work, either one of the drawing markers is laid down and installed and marked on the field. At the same time, when the vehicle reaches the field end and turns, the drawing marker is raised in conjunction with the ascending operation of the planting unit.
[0003]
[Problems to be solved by the invention]
In such a conventional configuration, when the drawing marker is erected during turning or the like, the tip of the drawing marker installed in the farm field is often buried in the farm field. Even when trying to stand up, the drawing marker is bent due to friction with the field, and when the tip of the drawing marker finally comes out of the field, the bending marker tries to return and a so-called snap phenomenon occurs. Due to this snap phenomenon, there is a problem that mud or the like adhering to the tip of the drawing marker is scattered to the traveling machine body or the planting part side.
On the contrary, when the drawing marker is laid down, the tip of the drawing marker is brought into contact with the field due to the tilting force, and mud is likely to adhere to the drawing marker, so that the mud is likely to be scattered. There's a problem.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of such problems, and it is an object of the present invention to provide a rice transplanter that can reduce the scattering of mud on the traveling machine body and the planting part side when the drawing marker is raised and lowered. And
[0005]
[Means for Solving the Invention]
In order to achieve the above object, a rice transplanter according to the present invention has the following features.
That is, in the rice transplanter in which the planting part is supported at the rear part of the traveling machine body so that the planting part can be moved up and down, and the drawing marker that undulates based on the ascending operation of the planting part is provided in the traveling machine body or the planting part. An impact attenuation member capable of attenuating the undulation force of the drawing marker is disposed between the marker and the traveling machine body or the planting body.
[0006]
According to this configuration, the snap phenomenon can be reduced by the damping force of the impact attenuating member when the drawing marker is standing up, so that the amount of scattering of mud adhering to the tip of the drawing marker is smaller than the conventional amount. Can be reduced.
[0007]
Further, the impact damping member has a configuration in which a damping force is large and a damping force is small in the damping direction, and the damping force is large when the drawing marker is standing up, and the damping force is small when the drawing marker is lying down. The side may act.
According to this configuration, it is possible to effectively suppress the scattering of mud or the like when standing up, and to quickly shift to the planting operation while preventing the tip of the drawing marker tip from reaching the field when lying down.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side view of a rice transplanter according to the present invention, and FIG. 2 is a plan view thereof.
The engine 2 is mounted on the front portion of the vehicle body frame 3 that is a center frame, and the mission case 4 is mounted on the rear portion of the vehicle body frame 3. Paddy field traveling front wheels 6 are supported by a front axle case 5, and paddy field traveling rear wheels 8 are supported by a rear axle case 7.
[0009]
The spare seedling stage 10 is provided on both sides of the bonnet 9 that covers the engine 2, and the vehicle body cover 12 is configured to cover the transmission case 4, the rear axle case 7, and the like. The vehicle body cover 12 includes a driver's seat 13 at an upper portion, and an operator gets on the step 11 attached to the vehicle body frame 3 to get on and sits on the driver's seat 13.
The operation handle 14 is provided in front of the driver's seat 13 and behind the bonnet 9.
[0010]
Next, the planting part 15 is demonstrated.
The planting part 15 is provided in the rear part of the traveling machine body 1, and the seedling stage 16 is supported by the planting case 20 through the lower rail 18 and the guide rail 19 so as to be slidable to the left and right. .
In addition, the seedling stage 16 is formed to be low in front and back, and in the rice planting machine for six-row planting shown in the present embodiment, on both side surfaces of the three planting cases 20 provided at the rear lower end of the planting unit 15, A rotary case 21 that rotates is attached. A pair of claw cases 22 are arranged at symmetrical positions around the rotational axis of the rotary case 21, and a planting claw 17 is arranged at the tip of each claw case 22.
[0011]
As shown in FIG. 3, the elevating link mechanism 27 is provided between the gate-type support column 40 erected at the rear part of the vehicle body frame 3 and the hitch bracket 41 at the front part of the planting part 15. The hitch bracket 41 is provided on the front side of the planting case 20 via the lower link fulcrum shaft 23.
[0012]
Here, the elevating link mechanism 27 includes a top link 25 and a lower link 26. The top link 25 is provided between a top link attachment shaft 43 of a pair of left and right upper frames 42 fixed to the upper portion of the gate-type support column 40 and a top hitch shaft 44 above the hitch bracket 41.
The lower link 26 is provided between the lower link mounting shaft 45 on the base end side of the gate-shaped column 40 and the lower hitch shaft 46 at the lower end of the hitch bracket 41.
[0013]
The lifting cylinder 28 is connected to the lower link 26, the piston rod tip 28a is connected to the arm shaft 48 at the tip of the left and right lift arms 47, and the left and right stabilizer 49 for preventing lateral vibration is connected to the arm shaft 48 and the lower hitch. It is provided between the shafts 46.
With this configuration, the planting unit 15 is connected to the traveling machine body 1 so as to be movable up and down, and the operation of the lifting cylinder 28 lowers the planting unit 15 during planting work, while planting during traveling. The part 15 can be raised.
[0014]
In FIG. 1, a fertilizer tank 37 of a six-side side fertilizer applicator 36 is provided behind the driver's seat 13, and the fertilizer in the fertilizer tank 37 is sent by a blower turbofan (not shown) through a flexible fertilizer hose 39. It is comprised so that it may be conveyed by the side row fertilization chute 38 with a wind force. The side-row fertilizer chute 38 is provided in the 2-row leveling center float 34 and the 2-level leveling side float 35, and is configured to bury the fertilizer adjacent to the seedling planting strip. Yes.
[0015]
Next, the drawing marker 51 will be described.
As shown in FIGS. 4 to 6, the drawing marker 51 has a marker portion 52 at the tip of a marker arm 53, and the marker portion 52 is bifurcated and curved to one side. The middle of the drawing marker 51 is bent at approximately 90 degrees, and an arc portion 73 having a large curvature is formed. A undulation plate 55 is formed at the base end of the drawing marker 51.
[0016]
The pipe frame 50 protrudes outward from the left and right outermost planting cases 20, and the undulation plate 55 is rotatably supported by the pipe frame 50 via a support shaft 56. As the undulation plate 55 rotates, the drawing marker 51 undulates. The structure will be described below.
One end of the undulation plate 55 is connected to the end of the left and right marker upright wire 58, and the other end is connected to the left and right lift arms 47 in FIG. Further, a marker collapse spring 57 is stretched between the other end of the undulating plate 55 with the support shaft 56 interposed therebetween and a locking portion 50 a provided in the pipe frame 50.
[0017]
The drawing marker 51 is raised by pulling the left and right marker standing wires 58 against the force of the marker fall spring 57, while the drawing marker 51 is fallen by the biasing force of the marker fall spring 57 during the drawing operation. As described above, since the left and right marker standing wires 58 are connected to the left and right lift arms 47, when the planting portion 15 is raised, the wire 58 is pulled and the drawing marker 51 is automatically raised. Further, when the planting part 15 is lowered, the wire 58 is loosened, so that the marker 51 is automatically fallen by the action of the marker fall spring 57 and is grounded to the field.
[0022]
By the way, as described above, the operator sits on the driver's seat 13 and operates the main transmission lever 29, the planting operation lever 30, which is the sub-transmission lever, the planting sensitivity adjustment lever 31, the main clutch pedal 32, the left and right brake pedals 33, and the like. To do.
The drawing marker 51 continuously repeats contact and separation from the surface by the above-described series of undulation operations. However, when the drawing marker is erected at the time of turning, the tip of the drawing marker is buried in the field. Often doing. Even when trying to stand up, the drawing marker is bent due to friction with the field, and when the tip of the drawing marker finally comes out of the field, the bending marker tries to return and a so-called snap phenomenon occurs.
[0023]
Due to this snap phenomenon, mud or the like adhering to the tip of the drawing marker may scatter to the traveling machine body or the planting part side, and may be applied to an operator or soil the rice transplanter. In addition, when the draw marker is laid down, the muddy soil adheres to the draw marker as the tip of the draw marker gets deeper in the field due to the tilting force, and the amount of mud scattered at the time of standing increases. .
[0024]
In order to eliminate these problems, in the present invention, an impact damping member, that is, a double-tube shock absorber 80 shown in FIG. As shown in FIG. 7 , the shock absorber 80 has an elongated cylindrical shape and is provided with a holding portion 81 at one end, and the holding portion 81 is provided with a mounting hole 82 in a direction perpendicular to the longitudinal direction. The shock absorber 80 is provided with a mounting plate 83 at a position that is approximately one third of the entire length from the other end, and the mounting hole 84 is inserted through the mounting plate 83 in parallel with the mounting hole 82.
[0025]
As shown in FIG. 4, the shock absorber 80 is attached to the engaging portion 50a of the pipe frame 50 and the attachment hole 82 to the undulating plate 55 with bolts as attachment means.
With the above configuration, when the drawing marker 51 is raised and lowered by the tensile force of the left and right marker standing wires 58 and the biasing force of the marker fall spring 57, both the force in the standing direction and the fall direction are attenuated by the action of the shock absorber 80. be able to.
[0026]
Furthermore, the shock absorber 80 used in the present embodiment has two types of damping force depending on the damping direction. That is, the damping force is small for the contraction of the shock absorber 80, and the damping force is large at the time of extension.
The shock absorber 80 is arranged such that the side with a large damping force acts when the marker fall spring 57 stands, and the side with a small damping force acts when the marker fall spring 57 falls.
[0027]
As a result, a large damping force such as mud splashing to the worker should be attenuated when standing up, and at the time of lying down, a smaller damping force can be used to quickly shift to planting work, and to the field. Can be suppressed.
Decreasing the amount of sublimation to the field reduces the amount of mud and the like adhering to the drawing marker 51, and as a result, also reduces the amount of mud and the like scattered when the drawing marker undulates.
[0028]
As described above, by using the large side of the damping force of the shock absorber 80 in the marker standing direction, it is possible to provide a rice transplanter that realizes a simple and light weight by using the shock damping member of the minimum size. This also contributes to reducing the driving force for raising the pull marker 51 and the load applied to the lift link mechanism 27.
[0029]
Next, the second embodiment will be described with reference to FIG. In 1st Embodiment, although the drawing marker 51 was provided in the planting part 15 supported so that raising and lowering to the rear part of the traveling body 1 was carried out, in this embodiment, it is provided in the position near both sides of the preliminary seedling stand 10. This is a so-called front marker rice transplanter.
In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
[0030]
FIG. 8 shows the vicinity of the base of the drawn marker 51 ′ in a lying state. As shown in the drawing, the drawing marker 51 ′ is provided with a rotary marker portion 52 ′ at one end of an L-shaped marker arm 53, and the other end is held by a plate-like undulation plate 55. . The first locking portion 55 a is provided on the side opposite to the extending direction of the marker arm 53.
[0031]
The pipe frame 90 projecting outward from the vehicle body frame 3 in the vicinity of the preliminary seedling stage 10 is bent at an obtuse angle, and a support shaft 56 is provided at the bent portion 90a. A mounting hole 90c is provided in the horizontal portion 90b in parallel with the protruding direction of the support shaft 56, and a spring locking portion 90d is provided between the support shaft 56 and the mounting hole 90c. The marker fall spring 57 is stretched between the first locking portion 55a and the spring locking portion 90c.
[0032]
The shock absorber 80, which is an impact damping member, is attached by a bolt that passes through the attachment hole 84 and the attachment hole 90c of the pipe frame 90, and a bolt that fixes the attachment hole 82 and the undulation plate 55, respectively.
The shock absorber 80 is provided so as to be parallel to the marker fall spring 57 when the draw marker 51 is fallen.
[0033]
As in the first embodiment, the drawing marker 51 is connected to the undulation plate 55 at one end by the left and right marker standing wires 58, and the drawing marker 51 resists the force of the marker fall spring 57 by pulling the wire 58. Then stand up.
The other end of the left and right marker upright wire 58 may be interlocked with the raising and lowering of the planting portion 15 with the same configuration as described above, and an operation lever or the like of the wire 58 is disposed at a position where it can be operated from the driver's seat 13. It may be provided so that it can be operated directly.
[0034]
In the present embodiment, a U-shaped marker holding member 91 that holds the position when the drawing marker 51 stands is provided, and the position is held by fitting the marker arm 53 at the time of standing. In addition, you may comprise so that it can provide and lock a marker lock release apparatus etc. similarly to 1st Embodiment.
[0035]
Also in the second embodiment described above, when the drawing marker 51 is raised by the pulling force of the left and right marker standing wires 58 and the biasing force of the marker fall spring 57, the shock absorber 80 acts in the standing direction and the falling direction. Both forces can be attenuated and scattering of mud can be prevented.
Further, by using the large side of the damping force of the shock absorber 80 in the marker standing direction, it is possible to provide a rice transplanter that achieves a simple and light weight by using the impact damping member of the minimum necessary size.
[0036]
In addition, as shown in any of the above embodiments, the impact damping member of the present invention can be easily detached by using attachment means such as bolts, and can be used for existing rice transplanters that are already in practical use. It can also be introduced. Therefore, the impact damping member can be attached / detached according to the state of the field or the like, or when the current rice transplanter shows scattering of mud or the like.
[0037]
In the above embodiment, the shock absorber is used as the shock damping member. However, the present invention is not limited to the member shown in FIG. 7 , but the shock constituted by another shape of the shock absorber or an elastic body such as a spring is attenuated. Any possible member can be used. At this time, if there is a damping direction in which the damping force becomes large and a damping direction in which the damping force becomes small as a characteristic of the impact damping member, it is arranged so that the damping force becomes large in the standing direction of the drawing marker 51. More preferred.
[0038]
Further, the present invention can be applied to any rice transplanter, and can be used for a rice transplanter of any shape such as a walking rice transplanter as well as the above-described passenger rice transplanter.
[0039]
【The invention's effect】
As described above, in the rice transplanter according to claim 1, by arranging the impact attenuation member capable of attenuating the undulation force of the drawing marker, the undulation of the drawing marker can be smoothly performed. It is possible to prevent mud soil and the like adhering to the vehicle from scattering to the traveling machine body and the planting part, particularly to the operator. It can contribute to prevention of fouling of rice transplanters and improvement of working environment.
[0040]
In the rice transplanter according to claim 2, since the large damping force side acts when the drawing marker stands up and the small damping force side acts when the drawing marker falls, an impact damping member having a minimum size and damping force is required. Thus, it is possible to effectively prevent the mud from scattering. This contributes to weight reduction and cost reduction.
[Brief description of the drawings]
FIG. 1 is a side view of a rice transplanter equipped with a drawing marker according to Embodiment 1 of the present invention.
FIG. 2 is a plan view of a rice transplanter equipped with a drawing marker according to Embodiment 1 of the present invention.
FIG. 3 is a side view of a planting part.
FIG. 4 is a rear view showing the drawing marker according to the first embodiment of the present invention.
FIG. 5 is an explanatory diagram of a marker unit.
FIG. 6 is a bottom view of the marker unit.
FIG. 7 is a side view of the shock absorber.
FIG. 8 is a plan view showing a drawing marker according to Embodiment 2 of the present invention.
[Explanation of symbols]
16 Seedling stand 20 Planting case 50 Pipe frame 50a Locking portion 51 Draw marker 52 Marker portion 53 Marker arm 55 Relief plate 56 Support shaft 57 Marker fall spring 58 Left and right marker standing wire 60 Support shaft 73 Arc portion 80 Shock absorber 81 Holding part 82 Mounting hole 83 Mounting plate 84 Mounting hole

Claims (1)

In the rice transplanter which supports the planting part at the rear part of the traveling machine body so that the planting part can be moved up and down, and includes a drawing marker that undulates based on the ascending operation of the planting part in the traveling machine body or the planting part, the drawing marker and An impact attenuating member capable of attenuating the undulation force of the drawing marker is disposed between the traveling machine body or the planting part main body, and the impact attenuating member includes a large damping force side and a small damping force side in the damping direction. The rice transplanter is characterized in that a large damping force side acts when the drawing marker stands and a small damping force side acts when the drawing marker falls .

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