JP2514498Y2 - Ditching equipment for no-till rotary - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Use The present invention excavates trenches at a predetermined interval in a no-till field and guides the excavated soil to both sides of the trench to provide no-tillage. The present invention relates to a ditch digging device in a no-till rotary that covers soil such as straw and seeds on a field.

(B) Conventional technology Conventionally, seeds were sown in a no-till field, and the left and right pair of grooving claws were approached to the cultivating shaft protruding from the chain case of the center drive type cultivator to both sides when viewed from the front and rear direction. The soil is thrown to the left and right by these grooving claws and the upper surface of the soil is flattened by a horizontal flat plate that is integral with the machine to cover the soil. The device is already known from Japanese Utility Model Publication No. 61-152208.

(C) Problems to be solved by the invention Since the ditching device in the no-till rotary only excavates and throws the soil by the grooving claw, the soil thrown backward accumulates in the ditch. However, there are problems that the amount of soil to be splashed to the left and right no-till fields is reduced and the shape of the shoulder of the groove is irregular.

(D) Means for Solving Problems The present invention is directed to solving the above-mentioned problems by mounting a cultivating device mounted on the rear of the machine on a tiller shaft horizontally extending in the left-right direction, and A small-diameter rotary locus for stirring straw and seeds and a large-diameter rotary locus for pouring soil while excavating the groove are provided at a predetermined interval, and the grooving claw is behind the tiller. In the no-tillage rotary provided with a soil dredging body for scooping the excavated soil, and a soil covering device including a soil soil substrate or the like for guiding the soil scooped by the ditch soil to the no-till field on both sides, The dredging body is brought close to the rotation locus of the groove-grooving claw so that at least the tip of the upper surface of the scoop formed at the tip of the groove dredging body penetrates into the lower part of the rotation locus, and both side front ends of the groove dredging body are The seeds are pushed below the no-till field and the top surface is leveled to extend horizontally. It solves the problems of the place the push plate.

(E) Action When the machine is run while rotating the tiller shaft horizontally extending in the left-right direction of the tiller installed behind the machine, the seeds and straw on the no-till field are stirred by the stirring claws and the seeds are stirred. While the soil is submerged on the soil surface of the non-tillage field, the grooving trench excavates the soil of the no-till field while rotating with the tilling axis and throws it diagonally rearward, and the thrown soil is the soil of the soil cover device. It is guided obliquely rearward by a substrate or the like and is deposited on the portion which will be the top surface of the ridge portion formed on the side portion of the groove.

At that time, the groove dredging body of the soil covering device receives the soil thrown backward by the grooving claws and guides the scooping up, but at least the front part of the top surface of the scooping at the front end thereof intrudes below the rotation track of the grooving claws. Since the soil to be thrown is close enough to hit, the soil to be thrown collides with the upper surface of the scoop at the initial stage of throwing at the highest speed and changes its direction. It will be scraped off, it will be possible to effectively prevent the soil from adhering, and at the front ends of both sides of the trench dredge, push the seeds downward in the no-till field and push the seeds evenly. Since the boards are distributed, even if there are seeds exposed on the surface of the no-till field in the stage before covering with soil, the seeds can be pushed below the no-till field.

(F) Embodiment One embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a tractor, and a cultivator 2 is connected to a rear portion of the tractor 2 by a top link 3 and lower links 4 and 4 so as to be able to move up and down. Tilling device 2 with 1 PTO shaft 1a using yoke joint
Is connected to the input shaft 2b projecting forward from the gear case 2a of the gear case 2a, and is linked with the input shaft 2b. The chain case 6 hanging from the end of the pipe frame 5 extending from the gear case 2a to both sides and the support plate 7 support the cultivating shaft 8. Bearing this, this tillage axis 8
A plurality of grooving claws 10 are attached to the parts corresponding to the rolling loci of the left and right wheels, respectively, between the grooving claws 10 groups of the tilling shaft 8 and outside thereof, and both ends of the tilling shaft 8. A large number of stirring claws 12, ... Are attached to the extension shafts 11 connected so as to rotate integrally, and the upper part of the cultivating shaft 8 is covered with a rotary cover 13, and the rear cover 15 is pulled up and connected to the toolbar 16. I am doing it.

Then, a pair of left and right brackets 17, 17 spaced apart at an interval equal to the ridge width are provided on both sides of the horizontal frame 16a at the rear end of the toolbar 16 so as to project forward, and fixed to the tips of these brackets 17. The support rod 19 is attached to the vertical pipe 18
Are inserted from above and screwed with bolts 20.

The soil covering device 21 is attached to the connecting pipe 22 and is a groove dredging body 25 for forming a soil in a portion plowed by the groove forming claw 10.
And the rear part of the soil substrate 23 having a triangular shape in plan view is formed in front of the trench body 25, and the left and right soil cover plates 26, 26 in which the front portion is screwed to the soil substrate 23 are integrally formed. Is configured.

The earth covering device 21 is provided with the above-mentioned grooved body in a side view.
A groove depth adjusting gap is provided between the rear portion of the soil cover plate 25 and the soil covering plate 26, and a leveling guide plate 27 screwed up and down so as to be vertically adjustable is provided under the soil covering plate 26 to adjust the groove depth adjusting gap. As a result, it is possible to sufficiently secure the allowance for adjusting the shallow depth of the groove and to form the ridge surface satisfactorily.

In addition, an upright portion of an L-shaped resistance bar 31 in a side view is inserted into a lower portion of the connection pipe 22 and tightened by a bolt 28 so as to be able to be moved up and down, and a horizontal portion of the resistance bar 31 is formed. A triangular plate 30 is fixed to the lower surface.

The connecting pipe 22 is fitted on the lower part of the support rod 19 and is screwed by a bolt 28a so as to be vertically movable.

In such a soil covering device 21, the leveling guide plate 27
Has elongated holes 29, 29 in the front and rear portions in the vertical direction, and has a guide groove 29a opened upward in the middle portion, and bolts 29b, 29b are attached to the front portion of the leveling guide plate 27. Also, since the round holes formed in the rear portion and the elongated holes 29, 29 are inserted, the leveling guide plate 27 can be adjusted up and down with respect to the earth covering plate 26 and fastened.

Further, the grooved body 25 includes a pair of left and right parallel side plates 32, 32.
The front end of the scooping plate 33 is connected to the lower part of the rear rotation locus of the grooving claw 10 as shown in FIG. The distance L is close to 10 to 50 mm, the front upper edges of the side plates 32, 32 and the upper edge of the scooping plate 33 are connected to the front lower edge of the soil cover plate 26 by a joint plate 35, The rear portions of the left and right cultivation soil substrates 23 can be adjusted for expansion and contraction by fitting the rod 36 and the inner end of the pipe 37 and screwing them together with a bolt 38, and the lower edge of the leveling guide plate 27 is shown in FIG. As shown, since the rear part is set to be slightly higher than the front part, the ridge-shaped part described later is formed so that the center of the top surface is higher.

Reference numeral 39 denotes a guide plate whose front portion is screwed to the side cover 40 of the tiller 2, and is inclined toward the outer rear side to separate the throwing passage 41 between the cultivating soil substrate 23 and the soil cover plate 26. Cage,
Its front portion is linear in plan view, but its rear portion is gently curved outward as shown in FIG.

Further, the rotation trajectory of the tip of the agitating claw 12... Is such that the ground surface is slightly scraped off as shown by a chain line in FIG. 1, and the auxiliary cover screwed to both ends of the rotary cover 13.
Reference numeral 45 covers the extension shaft 11, and the rear cover 15 is composed of an iron plate 15a rotatably connected to the rear edge of the rotary cover 13 and a rubber plate 15b connected to the rear edge thereof. The upper surfaces of the throwing passages 41, 41 on both sides are covered.

Numeral 46 is a stirrer that cuts the straw that was cut and sprayed by the cutter during the harvesting and threshing work by the combiner, and the seeds that were sown by the seeding device or the fertilizer that was sprayed by the fertilizer on the stirring nail 12
································································································································· A pair of left and right adjustable support rods 49, 49 hanging from the lower ends of a pair of extendable and retractable support rods 47, 47 hanging forward between 21, 21 and the front support frame 48 of the auxiliary cover 45. Is screwed to the lower end of.

The sowing machine or fertilizer may be attached to the front part of the tilling apparatus 2, but may be sowed or fertilized as an independent apparatus by another process.

Next, the operation will be described. After sowing and fertilizing in advance in a no-till field sprayed with cut straw, or when seeding and fertilizing are not performed as a preparatory work, a sowing device and a fertilizing device are mounted in front of the tillage device 2. When the tractor 1 is run while driving these devices and the tillage device 2, the stirring claws 12
Agitates cut straws, seeds, fertilizers, etc. sprinkled in the field scene, and shaves weeds together with the topsoil, and between the left and right soil cover devices 21 and 21, the pushing plates 46 ... When the seeds and the like that have floated up are pushed into the straw and leveled evenly, the grooving claws 10 are driven deep into the soil from the front and throw the soil diagonally upward and rearward.

At this time, since the scooping plate 33 faces the tip rotation locus of the grooving claw 10 at a narrow interval L, the thrown soil is at a high speed, the front surface of the scooping plate 33, the joint plate 35, and the cultivation soil. Since it strongly collides diagonally upward with the front part of the substrate 23, it is smoothly thrown up and thrown in a state where it does not adhere to or accumulate, and the scooping plate 33 scoops up almost all the soil to be accumulated in the groove. Then, the cultivating soil substrate 23 pushes out the scooped soil sequentially to the left and right sides, and a part of the thrown soil collides with the soil cover plate 26 and slides as it is to the middle part of the machine width and the rear outside. The soil that repels forward in the throwing passage 41 and scatters to the outside diagonally is received by the guide plate 39 in the front part of the throwing passage 41, is guided further outward, and is scattered upward. The soil to be coiled is received by the curved portion 26a at the upper portion of the rubber plate 15b and the covering plate 26. , The upper surface of the seed or the straw, the ridge portion formed between the left and right groove dredged bodies 25, 25, the leveling guide plate 27 below the soil cover plate 26, 26 extending toward the upper surface , 27 so that the central part is leveled up, the outside of the groove is covered with a width slightly wider than half the width of the ridge, and the other part is covered with soil in the next step.

In addition, when soil is sown when wheat is sown, the stirring claws 12 ... and the pushing plate 46 ... Are removed, and the grooving claws 10 ... Groove claw 10
The soil cover device 21 guides and spreads the soil excavated and thrown into the soil by the soil.

4 to 6 show another example of the resistance rod 31,
When making a ditch with combine straws scattered on the field by combine work, if straws or weeds get caught in the lower part of the resistance rod 31, it will be difficult to enter the soil, and the resistance rods of the left and right soil cover devices 21
If there is a difference in the resistance of 31, the straightness will deteriorate.

In such a case, as shown in the drawing, a groove 50 is formed in the front part of the lower horizontal portion of the resistance rod 31, and the star-shaped rotary wheel 51 is pivotally supported by the bracket by the bracket 51a. The straw caught at the part of the ground can be scraped off and pushed into the soil, and the groove formed by the rotating wheel 51 promotes the permeation and discharge of water accumulated therein.

7 to 8 show another example of means for preventing straw or weeds from being caught on the resistance rod 31, in which the rod case 52 is fixed to the upper surface of the horizontal portion of the lower end of the resistance rod 31, and the resistance plate 30 is attached. The connection part is composed of two plates 30a and 30b, one on the front and the other on the other.
The front plate 30a is loosely fitted to 0, the front end is pivotally supported by the fulcrum pin 53 at the bent portion of the resistance rod 31, and the pin 54 connected to the rear portion is extended upward from the rod case 52. Then, a spring 56 covered with a spring case 55 is attached to this extending portion to urge downward rotation, and the rear plate 30b connects a pair of front and rear pins 54, 54 to the upper part thereof, and these pins 54 , 54 are projected upward from the rod case 52, and springs 56, 56 mounted in the spring case 55 are attached to these projections to downwardly bias them. Loads are springs 56 ... and plates 30a, 30b that compose the resistance plate 30.
It is kept almost constant by and.

For example, when a straw or the like is caught on one of the resistance plates 30, the front and rear plates 30a and 30b forming the resistance plate 30 rise upward against the springs 56, ... Becomes smaller, so the stuck straws are removed,
When the resistance becomes smaller as a result, the plates 30a, 30b are pushed down by the springs 56 ... 57 is a seat.

(G) Effect of the invention The invention is a small-diameter rotary locus for stirring the straw and seeds on the no-tillage field on the cultivating shaft horizontally extending in the left-right direction of the tilling device mounted on the rear of the machine body as described above. The stirring claws and the grooving claws with a large diameter rotation locus for throwing the soil while excavating the claws are provided at predetermined intervals, and behind the tiller, the ditch dredging body scoops the excavated soil by the grooving claws. And a no-till rotary equipped with a soil covering device composed of a soil soil substrate or the like for guiding the soil scooped up by the ditch dredge onto the no-till field on both sides, in which the ditch dredge rotates the grooving claws. The locus is made to approach so that at least the tip of the upper surface of the scoop formed at the tip of the ditch dredge penetrates into the lower part of the rotation locus, and at the front ends of both sides of the ditch dredge, the seeds are moved downward in the no-till field. Since a pushing plate extending in the left-right direction is placed to flatten the top surface while pushing in, Due to this, the soil excavated and thrown obliquely upward and rearward will change direction while strongly colliding with the upper surface of the scoop of the ditch body. Without soiling, the soil can be guided and guided to the non-tillage fields on both sides of the groove to cover the soil.

In addition, since the pushing plate is arranged behind the ditching claws on both front ends of both sides of the ditch body, seeds exposed on the surface of the no-till field in the stage before soil covering are placed below the no-till field. Can be pushed.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a side view, Fig. 2 is a plan view, Fig. 3 is a plan view showing a state in which the device is connected to a tractor, and Fig. 4 is a soil cover. 5 is a perspective view of the apparatus, FIG. 5 is a side view of a part of the resistance rod, FIG. 5 (a) is a front view of the same, FIG. 5 (c) is a rear view of the same, and FIG. 6 is a sectional view of a groove. FIG. 7 is a perspective view of another example of the same as above, and FIG. 8 is a side view showing a partial cross section of the same as above. 2 ... Tilling device, 8 ... Tilling shaft, 10 ... Grooving claw, 11 ...
Extension shaft, 12 …… Stirring claw, 16 …… Toolbar, 17 …… Bracket, 21 …… Soil cover device, 25 …… Gutter dredge, 26 …… Soil cover plate, 27 …… Smoothing guide plate, 33 …… Pickle Upper plate, 39 …… Guide plate, 41 …… Throwing passage

Claims (1)

(57) [Scope of utility model registration request] 1. A small-diameter rotating locus stirring claw 12 and a groove for stirring straw and seeds on a no-tillage field are provided on a tilling shaft 8 horizontally extending in the left and right direction of a tilling device 2 mounted at the rear of the machine body. Grooving claws 10 having a large diameter rotation locus for throwing soil while excavating are provided at predetermined intervals, and behind the cultivating device 2, a groove dredging body 25 for scooping the excavated soil by the ditch claws 10, In a no-till rotary equipped with a soil covering device 21 including a soil soil substrate 23 for guiding the soil scooped up by the ditch dredge 25 to the no-till field on both sides, the ditch dredge 25 is provided with the grooving claws. The rotation locus of 10 is approached so that at least the tip of the upper surface of the scoop formed at the tip of the groove dredging body 25 enters the lower part of the rotation locus, and the seeds are cultivated at both front ends of the groove dredging body 25. Push plates 46, 4 extending in the left-right direction that push down below the field and level the top surface.
A trench digging device for a no-till rotary, which is characterized by arranging 6.