JP5216375B2 - Tillage work machine and soil removal device - Google Patents

Description

  The present invention relates to a tilling work machine that receives power from a traveling machine body, rotates a tilling shaft, and cultivates a field with a tilling claw disposed on the tilling shaft, and a soil removing device used therefor.

  Such a tilling work machine is plowed by rotating tillage claws, and the cultivation soil generated at the time of plowing adheres to the tilling shaft between adjacent tilling claws and the tilling of the tilling nails becomes worse and shallow tillage, Further, as a large amount of cultivated soil adheres to the cultivating shaft between the cultivating claws, there is a disadvantage that the power supplied to the work machine side increases, the traveling speed of the traveling machine body decreases, and the cultivating performance decreases. Also, conventional tillage work machines have a lot of cultivated soil attached to the bolts and nuts that attach the cultivating claws to the cultivating shaft, and it is necessary to drop the adhered cultivated soil when replacing the cultivating claws. In other words, the efficiency of the replacement work is reduced and the labor is increased.

  Therefore, in order to solve such a problem, as described in Patent Document 1, a tilling device in which an obstacle removing device is provided on a tilling shaft between adjacent tilling claws has been proposed. As shown in FIG. 8 (side view), the obstacle removing device 70 is arranged in a radial manner with a pipe 71 loosely fitted to the tilling shaft 11 and arranged on the outer periphery of the pipe 71 at a predetermined interval in the circumferential direction. And a claw mounting pipe 72 (in the literature, a pipe) extending to the claw, a flange 73 that is inserted into the claw mounting pipe 72 and extends radially, and an obstacle removing claw 74 provided at the tip of the flange 73. ing.

  The obstacle removal claw 74 is disposed inside the cultivation claw 76 adjacent in the axial direction of the cultivation shaft 11, and the tip side of the obstacle removal claw 74 is provided adjacent to one side of the fence 73. As it approaches 76, it gradually bends to the tilling shaft side and extends to the middle position of the rod 73, and the obstacle removing claw 74 is provided symmetrically with respect to the rod 73 in the axial direction of the tilling shaft 11. The front end of the obstacle removing claw 74 is located outside the bolt 17 and the nut 18 that fix the tilling claw 76 to the peripheral end of the disk 77 attached to the tilling shaft 11.

Japanese Utility Model Publication No. 39-27244

  The obstacle removing device equipped with this obstacle removing claw is loosely fitted to the tilling shaft and is located in the space between adjacent tilling claws regardless of the tilling shaft, so that the tilling nail rotates and approaches the obstacle removing nail Each time the soil is attached to the tilling nail, it is scraped off by the obstacle removing nail.

  However, the cultivated soil that adheres to the tilling shaft between adjacent tilling claws and clumps more on the tilling shaft side than the obstacle removing nail does not contact the obstacle removing nail regardless of the rotation of the tilling nail. The soil removed from the tillage shaft cannot be removed by the removal claw. Moreover, since the front-end | tip part of an obstruction removal nail does not extend so that it may reach the position of the volt | bolt and nut which attached the cultivation nail | claw, the cultivation soil adhering to a bolt and a nut cannot be scraped off by an obstruction removal nail | claw. Therefore, the tilling work machine provided with the obstacle removing device has problems that the tilling performance is lowered or the efficiency of the replacing work is lowered and the labor is increased when the tilling claws are replaced.

  The present invention has been made in view of such a problem, and an object thereof is to provide a tilling work machine capable of preventing soil from adhering to a tilling shaft, a bolt for fixing a tilling shaft to the tilling shaft, and a nut. And

In order to achieve the above object, a tillage working machine according to the present invention is a tilling work machine that rotates a tilling shaft by receiving power from a traveling machine body and plows a field with a tilling claw disposed on the tilling shaft. And has an insertion hole through which a tilling shaft between adjacent tilling claws is inserted, and has a width shorter than the distance between adjacent tilling claws, and the tilling axis between adjacent tilling claws is comprising a ring member mounted on the cultivating shaft is inserted into the insertion hole, the ring body, with the rotation of the cultivating shaft, Ri movable der between tilling claws adjacent and freely idle with respect to the cultivating shaft The ring body is formed in a ring shape having an overlapping portion where both end portions of the band body overlap each other, and an extension portion extending in the longitudinal direction of the band body is formed at one end portion of the band body. and characterized in that has a peripheral surface extending overlapping portion along the body That.

  According to this feature, it has an insertion hole through which the tilling shaft between the tilling claws provided adjacent in the axial direction of the tilling shaft is inserted, and has a width shorter than the distance between the adjacent tilling claws. And a ring body that is inserted into the insertion hole and attached to the tillage shaft, and the ring body is free to rotate with respect to the tillage shaft and rotates adjacent to the tillage shaft. By being able to move between the claws, the ring body is positioned in a state suspended from the tillage shaft in the space between adjacent tillage claws regardless of the rotation of the tillage shaft. That is, since the inner peripheral surface of the ring body is always in a position in contact with the upper portion of the tillage shaft, as the tillage shaft rotates, the cultivated soil adhering to the tillage shaft is in contact with the inner surface of the ring body. Each time it moves upward, it is scraped off in contact with the inner peripheral surface of the ring body. For this reason, the cultivated soil attached to the tillage shaft can be removed, and adhesion of the cultivated soil to the cultivated shaft can be prevented.

  In addition, when the tilling claw is attached to the outside of the tilling shaft via bolts and nuts, the ring body hangs down from the tilling shaft and is movable in the axial direction. 、 Because it is in contact with the nut, the cultivated soil attached to the bolt and nut is scraped by contact with the end of the ring body in the width direction whenever the tillage claw rotates and the bolt and nut approach the ring body . For this reason, it is possible to prevent the cultivation soil from adhering to the bolts and nuts, to shorten the work time for exchanging the claws, and to reduce the labor of the claw exchange work. Also, since the ring body can move freely between adjacent tilling claws, when the ring body comes into contact with rotating tilling claws, bolts, nuts, etc., the ring body moves to the side away from the adjacent tilling claws, bolts, nuts, etc. Is possible. For this reason, it is possible to prevent the ring body from excessively contacting the tilling claws, bolts, nuts and the like during rotation of the tilling shaft, and to prevent a reduction in the life of the ring body.

Further , according to this feature, both ends of the band forming the ring body are formed in a ring shape having an overlapping portion, and an extension extending in the longitudinal direction of the band is formed at one end of the band. is formed, rotating extension with Rukoto it the overlapping portion extending along the outer peripheral surface of the ring body, when mounting the ring member on the cultivating shaft, by the weight of the overlapping portion, the link bodies tilling shaft Thus, the overlapping portion is positioned at the lower part of the link body. For this reason, the overlapping part always tries to be positioned at the lower part of the ring body regardless of the rotation of the tillage shaft, so that the ring body is prevented from co-rotating and A removal effect can be obtained. When the tilling shaft rotates, the ring body swung around the tilling shaft can swing with the overlapping portion serving as a weight. For this reason, as the tillage shaft rotates, the ring body swings forward and rearward in the rotation direction of the tillage shaft, and the cultivated soil attached to the tillage shaft is compared with the case where the ring body does not swing. Each time it moves to the upper part of the ring, it is scraped off in contact with the inner peripheral surface of the ring body that swings. For this reason, the soil adhering to the tilling shaft can be effectively removed.

  In addition, one of the characteristics is that the ring body has irregularities formed on at least one of the end portions in the width direction.

  According to this feature, by forming irregularities on at least one of the end portions in the width direction of the ring body, it becomes a shape in which a large number of claws are provided continuously to the end portion in the width direction of the ring body, Since the frequency | count that a nail | claw contacts a volt | bolt and a nut increases, the cultivated soil adhering to a volt | bolt and a nut can be scraped off reliably by the width direction edge part of a ring body.

  One of the characteristics is that the ring body is detachable with respect to the tilling shaft.

  According to this feature, by making the ring body detachable from the tilling shaft, it can be easily replaced when the ring body is damaged, etc., improving the workability of the ring body replacement work. can do.

  One of the characteristics is that the ring body is formed of an elastically deformable material.

  According to this feature, when the ring body is formed of an elastically deformable material, when the cultivated soil attached to the tilling shaft, bolts, and nuts contacts the ring body, the inner peripheral surface of the ring body and the end in the width direction are Since it deforms to apply force to these cultivated soils and scrapes off the cultivated soil in contact with the bolts and nuts, it returns to its original shape, so that the cultivated soil can be more easily scraped off.

  In addition, one of the features is that the inner surface of the ring body is provided with irregularities.

  According to this feature, by providing irregularities on the inner surface of the ring body, a large number of convex portions are formed on the inner surface of the ring body, and the number of times that the convex portions contact the cultivated soil attached to the tilling shaft increases. The effect of scraping the cultivated soil attached to the tilling shaft by the inner surface of the ring body can be further improved.

In addition, one of the features is a soil removal device for a tilling work machine including the ring body according to any one of claims 1 to 5 .

  According to this feature, the soil removal device for a tilling work machine is composed of the ring body according to any one of claims 1 to 6, so that the soil removal device is placed between adjacent tilling claws of the tilling shaft of the tilling work machine. When attached to, the soil removed from the tillage shaft can be scraped off by the soil removal device, and the soil can be prevented from adhering to the tillage shaft. Moreover, the width direction edge part of the soil removal apparatus can scrape off the cultivated soil adhered to the bolts and nuts to which the cultivating claws are attached. Further, by forming irregularities on at least one of the end portions in the width direction of the ring body, the cultivated soil attached to the bolts and nuts can be surely scraped off. Furthermore, by making the ring body detachable from the tilling shaft, when the ring body is damaged or the like, it can be easily replaced, and the workability of the ring body replacement work can be improved. In addition, by forming the ring body with a material that can be elastically deformed, the ring body will return to its original shape after scraping the cultivated soil attached to the tilling shaft, bolts and nuts, making it easier to scrape the cultivated soil. Can do. Moreover, by providing unevenness on the inner surface of the ring body, it is possible to further improve the effect of scraping the cultivated soil attached to the tilling shaft with the inner surface of the ring body. Furthermore, the ring body is formed in a ring shape having overlapping portions where both ends of the belt forming the ring body overlap, so that the overlapping portion is always the ring body regardless of the rotation of the tillage shaft. Therefore, the ring body can be prevented from co-rotating, and the removal effect of the cultivated soil attached around the tilling axis by the inner surface of the ring body can be obtained.

  According to the tilling work machine and the soil removal apparatus according to the present invention, the tilling work machine capable of preventing the soil from adhering to the tilling shaft, the bolt for fixing the tilling claw to the tilling shaft, and the nut by having the above-described features, The soil removal apparatus used for this can be provided.

  Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS. The present embodiment will be described with reference to an example of a tilling work machine that plows / crushes soil in a field among the tilling work machines.

  As shown in FIG. 2 (side view), the tilling work machine 1 is attached to the rear part of the traveling machine body 90 and proceeds with the traveling of the traveling machine body 90 to perform the tilling work, and extends in the width direction of the machine body 2. A tilling rotor 10 is rotatably provided between the transmission case 5 disposed on both sides of the main body frame 3 and the lower side of the support frame.

  A gear box 4 is provided at the center in the width direction of the main body frame 3, and the gear box 4 is provided with an input shaft 4a extending to the front side. Power is transmitted to the input shaft 4a from a PTO shaft (not shown) of the traveling machine body 90 via a transmission shaft (not shown). The power transmitted to the input shaft 4a is transmitted through a power transmission mechanism (not shown) built in the main body frame 3 and a power transmission mechanism (not shown) in the transmission case 5 to lower the tilling rotor 10. It is designed to rotate in the cutting direction.

  An upper cover 7 extending in the front-rear direction and covering the top of the tilling rotor 10 is provided above the tilling rotor 10, and a leveling body 50 is attached to the rear end portion of the upper cover 7 so as to be rotatable in the up-down direction. . The leveling body 50 is plate-shaped, the front end side extends obliquely rearward, the front end part contacts the field surface, and the vertical position adjustment is performed via the vertical adjustment mechanism 8 attached between the main body frame 3 and the leveling body 50. Is configured to be possible.

  As shown in FIG. 1 (front view), the tilling rotor 10 has a tilling shaft 11 that is pivotally supported between the lower side of the transmission case 5 and the support frame shown in FIG. 2 and a predetermined interval in the axial direction of the tilling shaft 11. In the axial direction of the tilling shaft 11, the tilling claws 15 are disposed on the disc-like claw mounting flanges 13 provided at a plurality of positions with a predetermined interval in the circumferential direction and extend in the radial direction. And a ring body 20 mounted on the tilling shaft 11 between the tilling claws 15.

  The tilling claw 15 is curved in the direction opposite to the rotation direction of the tilling claw 15 shown in FIG. 2 from the vertical blade portion 15b extending from the distal end portion of the attachment base portion 15a attached to the claw attachment flange 13 to the horizontal blade portion 15c. The portion 15c is curved to one side in the body width direction with a substantially constant radius of curvature to form a rake face on the curved side. The tilling claw 15 has this attachment base 15 a attached to the claw attachment flange 13 via bolts 17 and nuts 18. For this reason, the tilling claw 15 can be removed from the claw mounting flange 13 when the fastening state of the bolt 17 and the nut 18 is released, and the tilling claw 15 can be replaced.

  The ring body 20 is formed by rolling a thin band body 21 (for example, about 1 mm thick) shown in FIG. 3 (plan view) formed of a material such as elastically deformable rubber or resin, and overlapping both ends. Is formed. As shown in FIG. 3 (plan view), the band body 21 has a rectangular ring main body portion 22 in a plan view extending in the longitudinal direction, and extends from one end portion of the ring main body portion 22 to the width of the ring main body portion 22. A slit 25 extending in the width direction of the ring main body 22 is formed near the extension 23 of the ring main body 22, and the other side of the ring main body 22. A locking projection 27 is formed at the end. The entire locking projection 27 is inserted into the slit 25 from the outer peripheral side of the ring body 22.

  On both sides in the width direction of the ring body 22, there are provided irregularities 29 that are continuously formed with a certain interval in the longitudinal direction of the ring body 22. The unevenness 29 may be of any shape as long as it can easily scrape the cultivated soil attached to the bolts 17 and nuts 18 described above. For example, the semicircular recess 29a shown in FIG. 4A (plan view), which is provided with a constant interval in the longitudinal direction of the portion 22 and is formed in a straight line between the ends of adjacent semicircular recesses 29a. Are continuously formed, and the ends of the adjacent arc-shaped recesses 29c are formed in the shape of needles to form the projections 29d, or as shown in FIG. 4B (plan view). Arc-shaped concave portions 29a are continuously provided with a certain interval, and the ends of the adjacent arc-shaped concave portions 29a project outwardly in an arc shape to form convex portions 29e, or FIG. A rectangular groove provided at regular intervals as shown in (plan view) is defined as a recess 29f. This may be or a convex portion 29g between the adjacent concave portions of the groove 29f is formed in a linear shape.

  These convex portions 29b and the like serve to scrape off the cultivated soil attached to the bolts 17 and nuts 18 when the tilling claws 15 rotate with the ring body 20 mounted around the tilling shaft 11. It is possible to reliably drop the cultivated soil by repeatedly hitting a large number of convex portions 29b and the like attached to the bolt 17 of the book. In particular, in the case of the concavo-convex 29 shown in FIG. 3, the adhering soil removal effect is obtained by the linear portion and the arc portion intermittently contacting the cultivated soil adhering to the bolts 17 and nuts 18, as shown in FIG. In the case of the unevenness 29 shown, an adhering soil removal effect is obtained by the finely protruding portion 29d protruding like a needle contacting the cultivated soil adhering to the bolt 17 or the like, and in the case of the unevenness 29 shown in FIG. Since the unevenness 29 formed in an arc shape softly contacts the cultivated soil attached to the bolts 17 and the like, the effect of improving the durability of the unevenness 29 is obtained. In the case of the unevenness 29 shown in FIG. Since the pleated portion between the adjacent recesses 29f can come into contact with the cultivated soil attached to the bolts 17 and the like while undergoing large deformation, the attached soil removal effect can be obtained over a wide range.

  The slits 25 shown in FIG. 3 are provided on the inner side of both sides in the width direction of the ring body 22 and extend in the ring body width direction. A trapezoidal portion 22a is provided at the other end in the longitudinal direction of the ring main body portion 22 so as to gradually incline toward the inner side of the ring main body portion 22 as it advances toward the tip side. The top portion 22a1 of the trapezoidal portion 22a is disposed substantially parallel to the slit 25 so that the locking projection 27 is not easily removed from the slit 25 in a state where the locking projection 27 is inserted into the slit 25 and connected to the ring body portion 22. In addition, it has substantially the same length and the same position as the slit 25 with respect to the ring body width direction. The aforementioned locking protrusion 27 extends on the top 22a1 of the trapezoidal portion 22a.

  The locking projection 27 has a rectangular locking portion 27a having substantially the same width as the ring body portion 22 and extends from the other end of the locking portion 27a to one side in the longitudinal direction of the ring body 20. The insertion portion 27b is inserted into the slit 25 from the insertion portion 27b to the locking portion 27a. The locking projection 27 extends in the ring body width direction from the top portion 22a1 of the trapezoidal portion 22a and is engaged with the ring body portion 22 in a state of being hooked on the circumferential surface of the ring body portion 22 opposite to the side inserted into the slit 25. Stopped. For this reason, it is preferable that the locking protrusion 27 has a larger width.

  The insertion portion 27b has an end portion in the width direction extending in the ring body portion width direction more than an end portion of the top portion 22a1 of the trapezoidal portion 22a, thereby increasing the strength of the proximal end side of the locking projection portion 27.

  In order to lock the locking projection 27 configured as described above to the ring body 22, it is necessary to insert the entire locking projection 27 into the slit 25. The width of the locking projection 27 is as follows. Since it is larger than the width of the slit 25, when inserting into the slit 25, the locking projection 27 is inserted into the slit 25 after both sides in the width direction of the locking projection 27 are bent. Then, when the bent locking projection 27 passes through the slit 25, the bent locking projection 27 is opened, and the widthwise end of the locking projection 27 is inserted into the slit 25. FIG. 5 (perspective view) in which it is in a state of being hooked to the inner peripheral surface of the ring main body portion 22 on the opposite side, and one end in the longitudinal direction of the band body 21 is connected to the other end and has an insertion hole 20a on the inner side. The ring body 20 shown in FIG.

  The insertion hole 20a of the ring body 20 has a larger cross section than the cross section of the tillage shaft 11 shown in FIG. 1 and can be inserted through the tillage shaft 11, and the tilling shaft 11 is inserted through the insertion hole 20a. Regardless of the rotation of the tillage shaft 11, the ring body 20 is freely slidable in a state of being suspended on the tillage shaft 11 between the adjacent tilling claws 15. The shape of the insertion hole 20a may be an ellipse, a long hole partially including an arc or a straight line in addition to a circle. Further, the width B of the ring body 20 shown in FIG. 1 has a width shorter than the distance X between the adjacent tilling claws 15.

  In the ring body 20 shown in FIG. 5, when the locking projection 27 is inserted into the slit 25, the locking projection 27 moves along the outside of the extension 23 and is inserted from the outside to the inside of the slit 25. Is formed. When the locking projection 27 is locked to the ring body 22, the extension 23 and the locking projection 27 extend along the inner peripheral surface of the ring body 22 and overlaps a part of the ring body 22. It becomes the overlapping part 31. When releasing the locking state of the locking projection 27 of the ring body 20, both sides in the width direction of the locking projection 27 are bent inward in the width direction, and in this state, the locking projection 27 is moved from the inside of the slit 25. Insert and pull out the slit.

  As shown in FIG. 6 (perspective view), the ring body 20 ′ has a slit in which the locking projection 27 is positioned inside the extension 23 when the locking projection 27 is inserted into the slit 25. 25 may be formed by being inserted from the inside to the outside. The ring body 20 ′ has a ring main body portion in which the extension portion 23 and the locking protrusion portion 27 extend along the outer peripheral surface of the ring main body portion 22 in a state where the locking protrusion portion 27 is locked to the ring main body portion 22. 22 so as to be an overlapping portion 31 that overlaps a part of 22. When releasing the locking state of the locking projection 27 of the ring body 20 ′, both sides in the width direction of the locking projection 27 are bent inward in the width direction, and the locking projection 27 in this state is placed outside the slit 25. And insert it into the slit.

  The link bodies 20 and 20 ′ shown in FIG. 5 and FIG. 6 configured as described above have a shape in which a large number of convex portions are formed on the inner peripheral surface thereof, and the convex portions come into contact with the cultivated soil attached to the tilling shaft 11. It may be formed by providing irregularities 35 for increasing the number of times. For example, the irregularities 35 may be formed by embossing or may be flocked on the inner surfaces of the link bodies 20 and 20 ′ by electrostatic flocking. Further, the extension portion 23 of the ring bodies 20 and 20 ′ serves as a weight, and in the case shown in FIG. 5, the extension portion 23 directly contacts the tilling shaft 11 to remove the soil attached to the tilling shaft 11. In the case shown in FIG. 6, the effect of vibrating the ring body 20 ′ from the outer surface of the ring body 20 ′ is obtained by the vibration caused by the rotation of the tillage shaft 11.

  Next, operation | movement of the tilling work machine 1 in the case of plowing the cultivated soil of the field with the tilling work machine 1 of this invention is demonstrated. First, the tilling work machine 1 is connected to the traveling machine body 90 shown in FIG. 2, and the input shaft 4a is connected to the PTO shaft of the traveling machine body 90 via a power transmission shaft (not shown). When the vertical position adjustment of the leveling body 50 is necessary, the vertical position of the leveling body 50 is adjusted by the vertical adjustment mechanism 8. Then, the traveling machine body 90 is advanced, and the power from the traveling machine body 90 is transmitted to the tilling work machine 1 to rotate the tilling rotor 10 in the downcut direction. During the plowing operation, the cultivated soil in the field is cultivated by the cultivating claws 15 of the cultivating rotor 10 and leveled by the leveling plate 50.

  A part of the cultivated soil cultivated by the cultivating claw 15 of the cultivating rotor 10 is released to the leveling plate side or moves along the rotation direction of the cultivating claw 15 with the rotation of the cultivating rotor 10 and The bolts 17 and nuts described above that are released obliquely downward from the gap between the traveling machine body side end and the tilling rotor 10, try to adhere to the tilling shaft 11, or have the tilling claw 15 attached to the claw mounting flange 13. Or trying to adhere to the.

  Here, in the tilling work machine 1 according to the invention of the present application, the ring body 20 described above is provided on the tilling shaft 11 as shown in FIG. 7 (front view). When the tilling shaft 11 is not rotating, the ring body 20 is in a posture in which the overlapping portion 31 is positioned below the ring body 20 due to its own weight. For this reason, since the overlapping portion 31 always tries to be positioned below the ring body 20 regardless of the rotation of the tilling shaft 11, the ring body 20 is prevented from co-rotating and is attached around the tilling shaft by the back surface of the ring body 20. You can scrape the cultivated soil.

  When the tilling shaft 11 rotates, the upper inner peripheral surface of the ring body 20 that comes into contact with the tilling shaft 11 is pulled and moved in the rotation direction of the tilling shaft 11 by the rotation of the tilling shaft 11. The ring body 20 tilts toward the leveling plate, and when the ring body 20 tilts, the friction between the upper inner peripheral surface of the ring body 20 and the tilling shaft 11 gradually decreases, and before the ring body 20 swings. When the tilt angle of the ring body 20 at the time of swinging relative to the state becomes a certain angle, the ring body 20 is in a free state with respect to the tilling shaft 11 and tilts to the original position before swinging. That is, the ring body 20 swings in the direction approaching and separating from the leveling plate 50 when the tilling shaft 11 rotates.

  Therefore, as the cultivating shaft 11 rotates, the cultivated soil attached to the cultivating shaft 11 comes into contact with the inner peripheral surface of the ring body 20 every time it moves to the upper part of the cultivating shaft 11, and the ring body 20 is rocked. Therefore, when the cultivated soil attached to the cultivating shaft 11 moves to the upper part of the cultivated shaft 11, when the swing of the ring body 20 is opposite to the moving direction of the cultivated soil, the cultivated soil oscillates the ring body 20. It is scraped off from the tilling shaft 11 positively by the moving inner peripheral surface. For this reason, adhesion of soil to the tilling shaft 11 can be reliably prevented.

  Further, the cultivated soil attached to the bolts 17 and the nuts 18 with the tilling claws 15 attached to the claw mounting flanges 13 and the unevenness 29 at the end in the width direction of the ring body 20 is increased each time the tilling claws 15 rotate and approach the ring body 20. It is scraped by contact. Here, the ring body 20 is made of an elastically deformable material. For this reason, whenever the bolt 17 and the nut 18 are rotated and contacted with the unevenness 29 of the link body 20 as the tillage shaft 11 rotates, the unevenness 29 is elastically deformed according to the size of the contacted soil and After contacting and scraping the cultivated soil in contact with the bolts 17 and nuts 18, the original shape is restored. For this reason, the cultivated soil attached to the bolt 17 and the nut 18 receives a force from the elastically deformed unevenness 29 and is effectively scraped off in combination with the rotation of the bolt 17 and the nut 18. For this reason, it is possible to prevent the cultivation soil from adhering to the bolts 17 and nuts 18, and when exchanging the tilling claws 15, it is easy to remove the cultivation soil adhered to the bolts 17 and nuts 18. While shortening the work time at the time of nail | claw exchange, the reduction of the labor of a nail | claw exchange work can be aimed at.

  Further, since the ring body 20 is movable between the tilling claws 15 adjacent in the axial direction of the tilling shaft 11, when the ring body 20 comes into contact with the rotating tilling claws 15, bolts 17, nuts 18 and the like, the ring body 20 is tilled. It can move to the side away from the claw 15. For this reason, it is possible to prevent the ring body 20 from excessively contacting the tilling claws 15, the bolts 17, the nuts 18, and the like during rotation of the tilling claws 15, and to prevent a reduction in the life of the ring body 20. .

The partial front view of the tilling rotor provided in the tilling work machine concerning one embodiment of the present invention is shown. The side view of the tillage working machine concerning one embodiment of the present invention is shown. The top view of the strip | belt body which forms the ring body provided in the tillage working machine concerning one embodiment of this invention is shown. It is a partial front view of the ring body for demonstrating the shape of the unevenness | corrugation provided in the width direction edge part of this link body. The perspective view of the ring body provided in the tillage working machine concerning one embodiment of the present invention is shown. The perspective view of the other ring body provided in the tillage working machine concerning one embodiment of the present invention is shown. The partial front view of the tilling rotor for demonstrating operation | movement of the ring body concerning one embodiment of this invention is shown. The partial side view of the conventional tillage working machine is shown.

DESCRIPTION OF SYMBOLS 1 Cultivation work machine 11 Cultivation shaft 15 Cultivation claw 20, 20 'Ring body 20a Insertion hole 29 Concavity and convexity 31 Overlapping part 90 Traveling machine body

Claims (6)

In a tilling work machine that receives power from the traveling machine body, rotates the tilling shaft, and plows the field with the tilling claws arranged on the tilling shaft,
The adjacent tilling nail has an insertion hole through which a tilling shaft between the tilling claws provided adjacent to the axial direction of the tilling shaft is inserted, and has a width shorter than the distance between the adjacent tilling claws. A ring body between which the tilling shaft is inserted into the insertion hole and attached to the tilling shaft;
Said ring member, said with the rotation of the cultivating shaft, Ri movable der between tilling claws to and the adjacent freely idle with respect to the cultivating shaft, the both end portions of the strip forming the ring body Formed in a ring shape with overlapping parts,
An extension portion extending in the longitudinal direction of the belt body is formed at one end portion of the belt body, and the extension portion extends along the outer peripheral surface of the ring body to form the overlapping portion.
Tillage work machine characterized by that.   The tilling work machine according to claim 1, wherein the ring body is formed with irregularities at least at one of its end portions in the width direction.   The tilling work machine according to claim 1, wherein the ring body is detachable with respect to the tilling shaft.   The tilling work machine according to any one of claims 1 to 3, wherein the ring body is formed of an elastically deformable material.   The tilling work machine according to any one of claims 1 to 4, wherein unevenness is provided on an inner surface of the ring body. A soil removing device for a tilling work machine comprising the ring body according to any one of claims 1 to 5 .

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