JP4117064B2 - Grooved disk device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an open groove disk device, and more particularly, to an open groove disk device equipped in a sowing machine, a fertilizer machine, and a sowing combined work machine, and the like. The present invention relates to a grooved disk device capable of switching.
[0002]
[Prior art]
Regardless of whether it is plowing or non-tillage cultivation, individual working machines that perform plowing, crushing work, leveling work, grooving work and fertilization work for sowing are widely known. Therefore, a work machine that improves efficiency by associating these works and performing two or more works, a so-called complex work machine, is also widely known.
For example, as a combined work machine in rice farming work, prior to direct sowing work, in order to equalize the field conditions in advance, crushed soil and tillage work at a shallow position, then leveled, and fertilizer suitable for sowing There is known a sowing combined work machine that forms a sowing groove on a sowing bed for sowing while performing fertilization work and sows, covers, and suppresses soil.
Specifically, as disclosed in Japanese Patent Laid-Open No. 9-275714, the one shown therein is subjected to leveling by the lower end portion of the crushed plate of the working machine after the tilling work by the rotary tiller, The working machine applies pressure by a rolling roller to form a seeding groove, and then seeds and covers the soil.
As described above, what is combined with farm work is not limited to the one described in the above-mentioned gazette, but as enumerated as a conventional example in that gazette. No. 209613, No. 4-49857, No. 6-20334 and the like.
[0003]
[Problems to be solved by the invention]
By the way, in this kind of sowing combined work machine, a sowing groove opening device for sowing is dedicated, and it is difficult to combine it with a fertilizing groove opening device for fertilization. There was a problem that it was practically difficult to open the groove.
Therefore, the present invention can perform switching for selecting the opening shape of the sowing groove and the open groove shape of the sowing groove and the fertilization groove in the open groove disk device equipped in the seeding machine, the combined seeding machine, and the like. It is something that can be done.
[0004]
[Means for Solving the Problems]
In order to achieve the above-described object, the grooved disk device according to the present invention includes a grooved disk that rolls on a field surface to open a seeding groove or a fertilized groove, and a support that rotatably supports the grooved disk. An eccentric pin portion that has a boss portion that is fixed around the shaft so that the position of the support shaft can be adjusted at the center in the left-right direction, and that supports the grooved disk by rotatably fitting the shaft. The pair of left and right eccentric pin portions are inclined at a predetermined angle symmetrically with respect to the axis of the boss portion in the same plane including the boss portion.
[0005]
In the grooved disk device according to the present invention, the left and right grooved disks rotatably supported by the eccentric pin portion of the support shaft are adjusted by adjusting the position of the boss portion of the support shaft around the axis. The projection shape and the planar projection interval change sequentially. Therefore, after adjusting the planar projection shape of the grounded portion of the left and right grooved discs to a square shape in the direction of travel, the width of the planar projection is adjusted narrowly to open a wide single sowing groove. Moreover, by narrowly adjusting the plane projection interval, two narrow sowing and fertilization grooves can be opened. Further, by changing the diameter dimensions of the left and right grooved discs, it is possible to open the seeding grooves and the fertilization grooves having two different depths.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. First, as shown in FIGS. 1, 2, and 3, the grooved disk device according to the present invention includes grooved disks 26 and 27 that roll on a field surface to open a seeding groove or a fertilizer groove, A support shaft 41 that rotatably supports the grooved disks 26 and 27 is provided. The support shaft 41 has a boss portion 41A, which is fixed around the shaft so that its position can be adjusted, in the central portion in the left-right direction, and an eccentric pin portion 41Y that supports and supports the grooved disks 26 and 27, respectively. , 41X at both left and right ends. The pair of left and right eccentric pin portions 41Y and 41X are inclined at a predetermined angle (10 to 20 degrees) symmetrically with respect to the axis of the boss portion 41A in the same plane including the boss portion 41A.
As shown in FIG. 1, the boss 41 </ b> A at the center in the left-right direction of the support shaft 41 is fitted to a bearing 42 of the bearing device 40, and the position can be adjusted around the shaft by a fixing screw 43 screwed into the bearing 42. It is fixed to. Further, as shown in FIGS. 2 and 9, the eccentric pin portions 41Y and 41X of the support shaft 41 are inserted into the left and right grooved disks 26 and 27 having boss bushes 44 and 44 attached to the outer surface thereof through bearings 45 and 45, respectively. And is supported rotatably. Further, nuts 46, 46 screwed to the tips of the eccentric pin portions 41Y, 41X press the grooved disks 26, 27 against the end surface of the boss portion 41A via the boss bushes 44, 44 and the bearings 45, 45 to fix them. is doing. The support shaft 41 is adjusted around the axis so that the planar projection shape and the planar projection interval of the ground contact portions of the left and right grooved disks 26 and 27 are sequentially changed. As shown in FIG. 9, the bearing 42 is supported in a suspended state by a support member 42 </ b> A extending from a machine body frame or the like of the work machine.
[0007]
Next, a sowing combined working machine equipped with the grooved disk according to the present invention will be described with reference to FIG. 5. Reference numeral 10 indicates a vertical harrow as a soil crushing device that rotates about a vertical axis. A seeding machine 20 is attached to the halo 10 via parallelogram links 22 and 23.
[0008]
Furthermore, the configuration of each part of the sowing combined work machine will be described. First, the vertical harrow 10 as a crushing device has a feature that suppresses movement of the soil in the vertical direction as compared to a rotary harrow rotating on the horizontal axis. A plurality of rotors 11 arranged along the working width direction are: Adjacent rotors rotate in opposite directions, and each rotor 11 is composed of two rotating claws 11A attached to a disk. The vertical harrow 10 is driven by the rotational torque supplied from the TPO shaft of the tractor so that the rotation of the input shaft is once converted into rotation on a horizontal plane, and then each rotor is rotated through a gear group. The adjacent rotors rotate in opposite directions.
[0009]
The sowing combined work machine shown in FIG. 5 is attached to a tractor (not shown) by an upper link U and a pair of left and right lower links L forming a three-point link hitch mechanism provided in the tractor. Corresponding to the link, the vertical harrow 10 is provided with a hitch pin hole h in the mast 12 and a lower hitch pin 13 at a lower position of a member corresponding to the mast member.
The hitch pin hole h formed in the mast 12 is such that the hitch pin 14 for mounting the upper link U is long along the work progressing direction, and the end of the upper link U is in a plane perpendicular to the work progressing direction. The free zone h is formed so that it can move within an appropriate range. The movement of the hitch pin 14 to which the upper link U is attached is an important point as will be described later, and the movement of the tractor in the free zone h is not transmitted to the work implement as it is.
[0010]
Further, one end of one upper parallel link 15 and two lower parallel links 16 forming a parallelogram in a side view are attached to the vertical harrow 10 via pivot pins 15A and 16A, respectively. A seeding machine 20 is attached to the other ends of the links 15 and 16 via pivot pins 15B and 16B. The pivot pins 15B and 16B of these parallel links 15 and 16 are not directly attached to the sowing work machine 20, but are attached to the A type frame 17, and the A type frame 17 is attached to the sowing work. It connects with respect to the A-type frame for connection with which the machine 20 is equipped. The A-type frame 17 and the A-type frame for connection will be described in detail later.
[0011]
The end of the rod 18A of the lift cylinder 18 is pivotally attached to the upper parallel link 15 via a pin 18B, and the sowing work machine 20 is made independent of the vertical harrow 10 by expansion and contraction of the lift cylinder 18. It can be lifted appropriately.
[0012]
A flat plate 19 is attached to the vertical harrow 10 at its rear position. The flat plate 19 has an upper end attached to the frame of the vertical harrow 10 via an arm 19A, and its lower end is The pressing rod 19B is pressed against the field surface through a screw portion 19C that adjusts the length of the pressing rod 19B by screwing.
[0013]
The seeding machine 20 is provided with the connecting A-type frame 21 at the head position, and one end of the links 22 and 23 is connected to the upper and lower positions of the connecting A-type frame 21 by pins 22A and 23A. The other ends of the links 22 and 23 are pivotally attached to the pin 22B and the rotation shaft 24A of the pressure reducing roller 24. The pin 22B is located on a frame 25B that protrudes from a horizontal frame 25A that connects and fixes the upper ends of the frame 25 that supports the rotary shaft 24A of the pressure reducing roller 24 disposed at the rearmost end of the sowing work machine 20. Yes.
[0014]
The sowing work machine 20 has a tube-shaped soil adhesion prevention band for preventing soil adhesion on the outer peripheral surface of the pressure reducing roller 24 arranged at the rearmost position, that is, an adhesion prevention longer than the circumferential length of the pressure reducing roller 24. The sheet 24 </ b> X is wound to the full width so that the soil on the field surface and the outer peripheral surface of the pressure reducing roller 24 are not in direct contact with each other. The adhesion preventing sheet 24X is made of a material having excellent peelability. Even when the adhesion roller 24 rotates, even if soil adheres to the adhesion preventing sheet 24X, the adhesion preventing sheet 24X is deformed by the weight of the soil so that the soil can be put into the field. It can be dropped.
[0015]
In order to effectively prevent soil on the field surface from adhering to the outer peripheral surface of the pressure reducing roller 24, the pressure reducing roller 24 itself is preferably configured as shown in FIG. The pressure reducing roller 24 has an elastic body layer 24D made of synthetic rubber or resin foam on the outer peripheral surface of a hollow drum 24C having a central shaft 24B. A resin sheet 24E such as a highly peelable polyethylene sheet is adhered or welded to the surface of the elastic layer 24D, and the surface of the elastic layer 24D is covered with the resin sheet 24E. The central shaft 24B passes through the left and right outer plates 24F and inner plates 24G of the hollow drum 24C.
According to the pressure reducing roller 24, the soil on the field surface contacts the resin sheet 24E, and the soil adhering to the soil is repelled by the elasticity of the elastic layer 24D and easily peeled off from the resin sheet 24E. That is, it is possible to reliably suppress the soil on the field surface from adhering to the outer peripheral surface of the pressure reducing roller 24, and it is possible to perform an accurate pressure reduction operation close to perfect leveling.
[0016]
In the present embodiment, the grooved disk device according to the present invention is installed at the front position of the pressure reducing roller 24. In addition, the open groove disk device is supported in a suspended state by a support member 42 </ b> A whose bearing 42 extends from the body frame of the sowing work machine.
A seed tank 29 and a fertilizer tank 28 are mounted on the frame in order to drop seeds and fertilizers in the sowing grooves and fertilization grooves opened by the groove disks 26 and 27 of the groove disk device.
The fertilizer is in the form of granules. Like the seeds, the fertilizer tank 28 and the seed tank 29 are provided with feed rollers 28A and 29A having feed rollers provided at the bottoms of the fertilizer tank 28 and the seed tank 29 via supply pipes 28B and 29B. , 27 can be dropped and fed into the sowing groove 26Z and the fertilization groove 27Z (see FIG. 4).
The feed rollers 28A and 29A provided at the lower part of the fertilizer tank 28 and the seed tank 29 have feed rollers (not shown) linked to each other by a cog belt, and the feed rollers of the fertilizer tank 28 are The sprocket wheel 31A attached to the shaft 24A of the pressure-reducing roller 24 is placed in an interlocking relationship by the chain 31, and the rotation of the pressure-reducing roller 24 serves as a rotational drive source for the feeding roller.
[0017]
There are a fertilizer application groove 26Z formed on the rear side of the grooved disks 26, 27, and a covering plate 32 covering the seed sowing groove 27Z, and the grooved disk 26 is moved along with the movement of the working machine. 27, the soil dug up by the disc can be covered with the soil over the groove.
The cover plate 32 is not limited to a plate-like shape, and can be replaced with a cover plate. The cover plate 32 is selected and provided depending on the capacity of the working machine, the scale of the target field, and the like.
In this case, the arrangement shape of the soil covering disk in a plan view is inverted, and the front side in the traveling direction is wide open and the rear side is closed. When the earth covering plate is employed, it is only necessary to have a function of moving a mountain-like convex shape formed on the side of the groove formed by each grooved disk onto the groove.
[0018]
The A type frame 17 and the connecting A type frame 21 will be described below. As shown in FIG. 8, the pin 16 in the A-type frame 17 has a cross shaft shape with a reinforcing function at the lower end of the frame, and both end portions protrude outward in the width direction.
Further, a pin receiver 17X for receiving a pin is formed at the apex position of the A-shaped frame 17, and its axis is directed in the front-rear direction. The A-type frame 17 is formed of a square-shaped material, and a load can be applied from the surface of each material, particularly the outer surface and the front surface.
[0019]
On the other hand, the connecting A-type frame 21 borne by the A-type frame 17 is formed by channel members 21A and 21A, and the release surface of each channel member 21A faces inward, and the A-type frame 21 17 is accommodated in a state in which each surface of the A-type frame 17 is in contact with a space 21X formed by each channel material from the lower side of the A-type frame 21 for connection. The top portions of the channel members are assembled in a palm shape, and pin receivers 21Z through which the connecting pins 21Y are inserted are formed at the top positions. Further, the reinforcing member 21B is passed to the middle position of the channel member 21A, and the rigidity is increased.
[0020]
6 is an example in which the free zone h in FIG. 5 is made movable instead of a long hole. That is, the end of the upper link U of the tractor has a short arm 52 attached to the vertical harrow 10 via a pivot shaft 51, and the other end of the arm 52 has a U-shaped recess 53A. A restriction arm 53 is provided. In this restricting arm 53, the recess 53A can swing around a stopper pin 54 provided in the vertical harrow 10, and both ends of the recess 53A are stoppers 53B. A space between the stoppers 53B can function as a free zone h. In other words, the arm 52 is in a swingable region only between the stoppers 53B. In other words, the linear movement of the hitch pin of the upper link U is once converted into a rotational motion, and the free zone range is determined by regulating the rotational range.
[0021]
Further, the embodiment shown in FIG. 7 is an embodiment adopting an auto hitch type for facilitating the mounting of the tractor and the work implement. In this embodiment, an upper hitch pin 51 is provided at the front portion of the vertical harrow 10. A lower auto hitch cross shaft 52 is provided directly under the side view of the hitch pin 51.
[0022]
The upper hitch pin 51 is fitted in a long hole 54 formed in a front member of the vertical harrow 10, and can move along the working direction within the long hole 54. It is like that. The elongated hole 54 is in a free zone h, and the upper hitch pin 51 moves to an appropriate position corresponding to the lift operation of the tractor.
[0023]
Further, there is an auto hitch member 60 for catching these hitch pins 51 and 52. As shown in FIGS. 11 and 12, the auto hitch member 60 is formed on the vertical surfaces on both sides of the lower end portion of the inverted U-shaped portal member 61. The lower plate hitch pin 63 for mounting the lower link L is provided at the lower end position of both the plates 62. A hook 64 having an open upper surface is provided at the central position of the top of the portal member 61, and a portion closer to the work machine is a hook portion 64A. An end of the hook 64 on the tractor side projects toward the tractor. The upper link mounting seat 64B is provided.
[0024]
Further, a hook groove 65 for capturing the lower auto hitch cross shaft 52 is formed in the plates 62, 62 in a state where the working machine side is opened. In order to keep the lower auto hitch cross shaft 52 accommodated in the hook groove 65, a hook 66 is pivotally attached to the hook groove 65 by a pin 66A, and the hook 66 is rotated. The swing hook 67 is pivotally attached to the plates 62 and 62 by a pin 67A. A toggle spring is attached to the pin 67A, and a habit of rotating the swing hook 67 counterclockwise in FIG. 12 is given. As a result, the swinging hook 67 is always engaged with the stepped portion at the end of the hook 66 to close the hook groove 65.
The relationship between the swinging hook 67 and the hook 66 is that the hitch operating lever 68 is pulled up or down, and the swinging hook 67 attached to the lower end of the hitting lever 67 is rotated so that the hook 66 is attached to the pivot pin 66A. For example, when the hitch pin operating lever 68 is pulled up, the lower auto hitch cross shaft 52 accommodated in the hook groove 65 can be released from the captured and fixed state in the hook groove 65. Yes.
In order to rotate the hook 66, when the work implement is not mounted on the tractor, the hook 66 is rotated by pushing down the hitch operation lever 68, and as described above, the swinging hook 67 is rotated. The end portion of the hook 66 pushes the end portion of the hook 66 opposite to the hook portion 66B, so that the open portion of the hook portion 66B can be closed.
An operation lever 68A is erected on the top of the hitch operation lever 68 so as to be convenient for actual operation, so that an operator can manually perform an auto hitch operation. 11 and 12, reference numeral 69 indicates a stopper that prevents the hitch operation lever 68 from falling to the tractor side.
[0025]
Next, an explanation will be given about the auto hitch work. First, the upper link U of the tractor is previously attached to the upper link mounting seat 64B of the auto hitch member 60, and the lower link L is attached to the lower link hitch pin 63 so that the auto hitch member 60 is integrated with the tractor. . Then, by attaching the auto hitch member 60 to the vertical harrow 10, the tractor and the vertical harrow 10 are attached. First, the auto hitch member 60 is lifted and the tractor is attached to the vertical harrow 10. Then, the upper hitch pin 51 is hooked from the lower side by the hook portion 64 </ b> A, and the front portion of the vertical harrow 10 is made a riff. As a result, the vertical harrow 10 that is supported at one point at the upper end of the front side is rotated around the upper hitch pin 51 by its own weight, and the lower auto hitch cross shaft 52 is inserted into the hook groove 65 of the auto hitch member 60. be introduced. In this state, the operating lever 68A is pushed down to rotate the hook 66, and the lower auto hitch cross shaft 52 provided in the vertical harrow 10 is captured by the hook portion 66B. Thereby, a tractor and a working machine can be integrated in a direct mounting state.
[0026]
Further, since the vertical harrow 10 and the sowing work machine 20 connected to the rear part thereof are connected by both A-type frames, the vertical harrow 10 is first released by the lift mechanism of the tractor in order to release the connected state. The sowing work machine 20 is lifted, the front part of the sowing work machine 20 is kept floating by a stand separately provided, the lock pin 21Y is removed from the A-type frame, and only the vertical harrow 10 is lifted down. By releasing the mold frame 17 from the space 21X of the A-shaped frame 21 for connection, the coupled state of both is released. Thereby, vertical harrow 10 and sowing work machine 20 can be separated and made independent. In other words, each can be used for independent work.
[0027]
Next, the use state of the sowing combined work machine will be described. First, sowing work is performed on a field that has been maintained in a flat state, and a relatively shallow portion of the surface is cultivated by the rotor 11 of the vertical harrow 10 to temporarily soften the surface of the field. The surface is flattened by a flat plate 19 to form a seeding bed.
Then, while forming a sowing groove on the formed sowing bed, seeds are supplied from the seed tank 29 to the sowing groove, and granular fertilizer is supplied from the fertilizer tank 28 to the fertilizer groove with supply pipes 28A and 29A, respectively. Supply via. The supplied seeds and fertilizer are covered with a soil covering disk or a soil covering plate 32.
[0028]
At this time, the flat plate 19 provided in the vertical harrow 10 moves while gathering the surface soil of the field, so that the gathered soil is as shown in FIG. 14 at the end position (headland portion) of the work process. Swelling K is formed. Since this soil reservoir K is formed along the headland in the field, this soil reservoir K is used to work along the length of the headland at the final stage of the work and bring the entire surface of the field closer to leveling. It is necessary to work to eliminate as much as possible.
At this time, if it was carried out in the same state as in the sowing operation without changing the height of the flat plate 19, only the position of the soil reservoir K was moved, and the soil reservoir K was eliminated. There will be no.
Therefore, in the present invention, when the work is performed on the headland, the height of the flat plate 19 is slightly raised to scrape the upper part of the earth retaining K, and as shown in FIG. Correct to a low, flat hill K1.
[0029]
For this purpose, the leveling plate 19 is raised by using the output of the tractor. However, if the lift mechanism of the tractor is directly transmitted to the leveling plate 19, a delicate height control for scraping the upper part of the soil reservoir K is performed. It is difficult to do. Therefore, the lower link L of the tractor is lifted by the output of the lift mechanism so as to lift the leveling plate 19 by the lift operation. At this time, the entire work machine (the vertical harrow 10 and the sowing work machine 20 are integrated with each other). ) Is in a lift state with the grounding point of the pressure roller 24 (or the central axis of the pressure roller 24) located at the end of the entire work machine as a fulcrum, and is lifted by a height lower than the actual lift height of the flat plate 19. Will be.
[0030]
In other words, the hitch pin 14 of the upper link U of the tractor can move freely along the working direction within the range of the free zone h, so that the lift mechanism of the tractor actually performed the lifting work. In this case, the lift force first acts on the lower link L. At this time, the hitch pin 14 of the upper link U moves rearward along the free zone h. The moving distance at this time is determined by the lift height. In the range where movement is permitted by the free zone h, the entire work implement is not lifted by the actual lift height, and when the lift is performed by exceeding the allowable range (free zone h). The work implement is lifted for the first time. In this lift, the entire work machine is brought to a front-up state with the grounding point of the pressure reducing roller 24 as a fulcrum.
In other words, the working machine as a whole is a lever with the grounding point of the pressure roller 24 as a fulcrum, and the flat plate 19 existing at the intermediate position of the lever is lower than the lift height applied to the lower link L according to the lever ratio. Become.
[0031]
More specifically, since the lever movement is performed with the contact point of the pressure roller 24 as a fulcrum, the foremost part of the work machine is in the middle position of the lever in proportion to the lift height at the hitch point of the lower link L. The leveled flat plate 19 has a lower lift height and is placed at a suitable height for scraping the soil reservoir K. The headland correction work is performed twice and three times when the height at which the earth retaining K is cut is not sufficient.
As a result, the sump K in the headland is slightly higher than the flat part of the center T of the field, but is low as a whole. When water is applied to the field, the center of the field, the headland Since the difference in height is extremely small, the field environment can be made almost the same.
[0032]
On the other hand, during the pressure reducing operation on the field surface by the pressure reducing roller 24, the soil on the field surface contacts the adhesion preventing sheet 24X wound around the pressure reducing roller 24, and does not directly contact the outer peripheral surface of the pressure reducing roller 24. In this case, since the adhesion preventing sheet 24X is formed of a material having excellent releasability, there is almost no adhesion of soil on the surface of the field, and even if it adheres, the soil is easily accompanied by the rotation of the pressure reducing roller 24. It is peeled off. That is, by winding the adhesion preventing sheet 24X, it is possible to reliably suppress soil on the field surface from adhering to the outer peripheral surface of the pressure reducing roller 24, and the soil adhering to the outer peripheral surface of the pressure reducing roller 24 as in the past. There is no unevenness on the surface of the field during the operation due to the unevenness, and an accurate suppression work close to perfect leveling becomes possible.
[0033]
In addition, when the field surface is crushed with the pressure roller 24 shown in FIG. 15, the soil on the field surface contacts the resin sheet 24E covering the surface of the elastic layer 24D, and the soil adhering to the soil is an elastic body. It is bounced by the elasticity of the layer 24D and easily peels from the resin sheet 24E. Therefore, it is possible to reliably suppress the soil on the field surface from adhering to the outer peripheral surface of the pressure reducing roller 24, and it is possible to perform an accurate pressure reduction operation close to perfect leveling.
[0034]
Here, in the present invention, by adjusting the position of the support shaft 41 of the grooved disk device around the axis, the pair of left and right grooved disks 26 and 27 have the planar projection shape and the planar projection interval of the grounded portion in order. Change. Therefore, by adjusting the plane projection interval to be extremely narrow as long as the plane projection shape of the ground contact portions of the left and right grooved disks 26 and 27 becomes a C-shape toward the aircraft traveling direction, as shown in FIG. In addition, one wide sowing groove can be opened. Also, by narrowing the plane projection interval, two narrow grooves can be opened.
When the two grooves are opened by widely adjusting the plane projection interval, as shown in FIGS. 3 and 4, the left and right grooved disks 26 and 27 are made to have different diameters. By setting the diameter dimension larger than the grooved disk 26, the shallow sowing groove 26Z and the deep fertilized groove 27Z can be simultaneously opened. On the contrary, as shown in FIG. 10, by setting the diameter dimension of the grooved disk 26 to be larger than the grooved disk 27, the wide and deep fertilized groove M and the narrow and shallow seeding groove S are simultaneously opened. Can do.
[0035]
In the above embodiment, the description has been given by using the open groove disk according to the present invention mounted on the sowing combined work machine, but the present invention is not limited to this, and other various work machines are used. It is also possible to install.
[0036]
【The invention's effect】
As is apparent from the above description, in the grooved disk device of the present invention, the left and right grooved disks have a planar projection shape and a flat surface by adjusting the position of the boss portion of the support shaft around the axis. The projection interval changes sequentially. Therefore, according to the grooved disk device of the present invention, the planar projection interval of the ground contact portions of the left and right grooved disks is adjusted to a square shape toward the traveling direction, and the planar projection interval is adjusted to be extremely narrow. Thus, one wide sowing groove can be opened, and two narrow sowing grooves and fertilization grooves can be opened by widely adjusting the plane projection interval. Further, by changing the diameter dimensions of the left and right grooved discs, it is possible to open the seeding grooves and the fertilization grooves having two different depths. In other words, by simply adjusting the position of the boss portion of the support shaft around the shaft, it is possible to very easily switch between the operation of opening the sowing groove and the operation of opening the sowing groove and the fertilizing groove.
[Brief description of the drawings]
FIG. 1 is a front view of a grooved disk of a grooved disk device according to the present invention.
FIG. 2 is a front view showing an example in which a deformed disk is used as the grooved disk of the grooved disk device according to the present invention.
FIG. 3 is a partially enlarged front view of FIG. 2;
4 is a cross-sectional view taken along line 7-7 in FIG.
FIG. 5 is a side view showing a sowing combined working machine equipped with the grooved disk device according to the present invention.
FIG. 6 is a side view showing a sowing combined working machine showing another embodiment of the free zone portion of the sowing combined working machine equipped with the grooved disk device according to the present invention.
FIG. 7 is a side view of a sowing combined working machine of an example in which an auto hitch mechanism is adopted in a sowing combined working machine equipped with the grooved disk device according to the present invention.
FIG. 8 is an exploded explanatory view showing the relationship between an A-type frame and a connecting A-type frame.
FIG. 9 is an exploded explanatory view of a mechanism for adjusting the interval in the working state of the grooved disk.
FIG. 10 is a front view when the diameters of the grooved disks are different from each other.
FIG. 11 is a front view of an auto hitch member.
FIG. 12 is a side view of the auto hitch member.
FIG. 13 is an explanatory cross-sectional view of a farm field in a state where a soil puddle is corrected.
FIG. 14 is an explanatory cross-sectional view of a farm field in a state where a puddle is formed.
FIG. 15 is a cross-sectional view showing a structure of a pressure reducing roller.
[Explanation of symbols]
10 Vertical harrow
11 Rotor
12 Mast
13 Lower hitch pin
14 Hitch pins
15 Upper parallel link
16 Lower parallel link
15A, 16A Pivoting pin
15B, 16B pivot pin
17 A-type frame
18 Lift cylinder
18A rod
18B pin
19 Flat plate
19A arm
19B Push rod
19C thread
20 Sowing machine
21 Type A frame
21A channel
21B Reinforcing material
21Y Lock pin
21Z pin holder
22 and 23 links
24 Squeezing roller
24A Rotating shaft
24B Center axis
24C hollow drum
24D elastic layer
24E resin sheet
24F outer plate
24G inner plate
24X adhesion prevention sheet
25 frames
25A Horizontal frame
25B frame
26 Groove disc
26Z sowing groove
27 Groove disc
27Z fertilizer groove
28 Fertilizer tank
29 Seed tank
28A, 29A feeding section
31A sprocket wheel
32 Covering board
40 Bearing device
41 Support shaft
41A Boss
41X, 41Y Eccentric pin part
42 Bearing
43 Fixing screw
51 pivot axis
52 short arm
53 Regulating arm
53A, 53B Stopper
60 Auto hitch members
61 Gate type member
62 plates
63 Lower link hitch pin
64 hooks
64A hook part
64B upper link mounting seat

Claims (1)

A grooved disk that rolls on the surface of the field to open the sowing or fertilizing groove and a support shaft that rotatably supports the grooved disk. The support shaft is fixed so that its position can be adjusted around the axis. And a pair of left and right eccentric pin portions, each of which has an eccentric pin portion that rotatably fits and supports the grooved disk. The grooved disk device is inclined at a predetermined angle symmetrically with respect to the axis of the boss within the same plane including the portion.

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