JP6405085B2 - Tillage nail - Google Patents

Description

  The present invention relates to a tilling claw attached to a tilling shaft of a tack coater having a rotary tilling device used for tilling work, for example.

  Conventionally, as this type of tilling claw, it has an attachment base attached to the tillage shaft, a vertical blade portion extending continuously from the attachment base, and a horizontal blade portion extending continuously from the vertical blade portion, Curved in a direction opposite to the rotation direction of the tillage shaft from the vertical blade portion to the horizontal blade portion, and the horizontal blade portion is curved in one of the rotation axis directions of the tillage shaft with respect to the vertical blade portion Is known (see, for example, Patent Document 1).

  In the tillage claw, a hard alloy part having a higher hardness than other parts is provided at the edge of the side blade part that comes into contact with the cultivated soil. It is designed to improve the durability of the rake face part that comes into contact with the most.

  A plurality of tilling claws are attached to the tilling shaft in the circumferential direction and the axial direction. Moreover, the upper part and axial direction end part of the tilling shaft to which the plurality of tilling claws are attached are covered with a cover body.

Japanese Utility Model Publication No. 05-91202

  The tilling claw adjacent to the cover body covering the axial end portion of the tilling shaft may be in a state where the vertical blade portion is in contact with the soil attached to the inner surface of the cover body. Since the tillage claw is mainly provided with a hard alloy portion on the horizontal blade portion (rake surface portion), if the vertical blade portion continues to contact the soil adhering to the inner surface of the cover body, it is longer than the horizontal blade portion. Uneven wear occurs in which the blade is greatly worn. As a result, the tilling claw adjacent to the cover body covering the axial end of the tilling shaft needs to be replaced at an early stage in order to prevent damage due to the occurrence of uneven wear and deterioration in tilling performance.

  An object of the present invention is to provide a tilling claw capable of prolonging the life and preventing deterioration of tillage performance by making uneven wear less likely to occur.

In order to achieve the above object, the present invention includes an attachment base attached to a tilling shaft, a vertical blade extending continuously from the attachment base, and a horizontal blade extending continuously from the vertical blade. And curved from the vertical blade portion to the horizontal blade portion in a direction opposite to the rotation direction of the tilling shaft, and the horizontal blade portion is bent in one of the rotation shaft directions of the tilling shaft with respect to the vertical blade portion. A tilling claw that is provided, and on the edge side of the vertical blade portion and the horizontal blade portion, a hard alloy portion having a higher hardness than other portions is provided from the vertical blade portion to the horizontal blade portion, The end of the hard alloy portion on the attachment base side is located in the vicinity of an extension line in the direction in which the attachment base extends.
As a result, since the hard alloy part is located at the edge of the blade extending from the vertical blade part to the horizontal blade part, when used as a tilling claw adjacent to the cover body covering the axial end of the tilling shaft, A hard alloy part contacts with the soil adhering to the inner surface.

  According to the present invention, when used as a tilling claw adjacent to the cover body that covers the axial end of the tillage shaft, the hard alloy portion can be brought into contact with the soil attached to the inner surface of the cover body. Therefore, it is possible to suppress the occurrence of uneven wear in which the vertical blade portion is greatly worn with respect to the horizontal blade portion, and it is possible to extend the life and prevent the tillage performance of the rotary tiller from being deteriorated.

It is a top view of the glazing machine which shows one Embodiment of this invention. It is a left view of a glazing machine. It is a front view of a glazing machine. (A) is a side view of the pretreatment part in a state where a part of the cover body is removed, and (b) is a front view of the pretreatment part in a state where a part of the cover body is removed. It is a front view of a 3rd tilling nail. It is a rear view of a 3rd tilling nail. It is AA sectional drawing of FIG. (A) is a side view of the pre-processing part in the state which removed a part of cover body which shows the other example of a soil removal member, (b) is a part of cover body which shows the other example of a soil removal member It is a front view of the pre-processing part of the state which removed

  1 to 7 show an embodiment of the present invention.

  In the present embodiment, a pad coater 1 having a rotary tiller to which a tilling claw of the present invention is attached will be described.

  This wrinkle coater 1 has a mounting portion 10 mounted on a traveling machine body T such as a tractor, an offset mechanism having one end connected to the mounting portion 10 and the other end movable in the width direction with respect to the mounting portion 10. Part 20 and working part 30 connected to the other end of offset mechanism part 20.

  The mounting portion 10 has a hitch frame 11 extending in the width direction of the traveling machine body T. The hitch frame 11 is coupled to a three-point link coupling mechanism provided on the traveling machine body T via a coupling frame (not shown). An input shaft 12 to which power from the traveling machine body T is input is provided on the front side of the hitch frame 11.

  As shown in FIG. 1, the offset mechanism 20 includes an offset frame 21 having a front end portion that is rotatably provided in the center in the width direction of the hitch frame 11, and a front end portion on one end side in the width direction of the hitch frame 11. And a link member 22 rotatably provided in the horizontal direction, and a connecting member 23 that connects the rear end portion of the offset frame 21 and the rear end portion of the link member 22. In the offset mechanism unit 20, the hitch frame 11, the offset frame 21, the link member 22 and the connecting member 23 constitute a parallel link mechanism. The offset mechanism unit 20 moves in the width direction by driving a hydraulic offset cylinder 24 provided between the other end in the width direction of the hitch frame 11 and the rear end side of the offset frame 21.

  In the offset frame 21, a power transmission mechanism including a chain and a sprocket for transmitting the power transmitted to the input shaft 12 to the working unit 30 side is provided.

  The working unit 30 includes a heaven field processing unit 40 for cutting the upper part of the old fence K formed along the periphery of the farm field, and a pre-process for cutting the lower part of the old fence K and depositing the cut soil. Part 50 and a trimming part 60 for applying the accumulated soil on the old sheared K, which is supported on the rear end side of the offset mechanism part 20 so as to be rotatable in the horizontal direction. . The working unit 30 rotates relative to the rear end side of the offset mechanism unit 20 by driving a hydraulic rotary cylinder 34 provided between the connecting member 23 side member and the working unit 30 side member.

  As shown in FIG. 3, the heaven field processing unit 40 includes a rotating shaft 41 that rotates by power transmitted to the input shaft 12, and a plurality of rotating shafts 41 that are attached to the outer peripheral side of the rotating shaft 41 at intervals in the circumferential direction. And a tilling claw 42. The rotating shaft 41 is arranged so that the front end side extends obliquely forward toward the outside of the field with respect to the rear end side during the trimming operation.

  As shown in FIG. 3, the preprocessing unit 50 is attached to the tiller shaft 51 rotated by the power transmitted to the input shaft 12 and the outer periphery side of the tiller shaft 51 at intervals in the circumferential direction. A plurality of first tilling claws 52, second tilling claws 53, third tilling claws 54, and predetermined portions of first to third tilling claws 52, 53, 54, which are arranged in the axial direction of 51, are covered from the outside. The cover body 55 includes a soil removal member 56 that is provided on the third tillage claw 54 and removes the soil attached to the rear surface of the cover body 55.

  As shown in FIG. 1, the tilling shaft 51 is arranged so that the front end side extends obliquely forward toward the outside of the farm field with respect to the rear end side during the trimming operation. As shown in FIG. 4, three attachment plates 51 a for attaching the first to third tilling claws 52, 53, and 54 are provided on the outer peripheral portion of the tilling shaft 51 at intervals in the axial direction. It has been.

  Each mounting plate 51 a is a polygonal plate-like member having a dimension in one direction larger than the dimension in the other direction, and a central portion in the longitudinal direction is fixed to the tilling shaft 51. On both sides in the longitudinal direction of each attachment plate 51a, holders 51b are provided as attachment portions for holding attachment base portions of first to third tilling claws 52, 53, 54 described later.

  The holder 51b is formed by fixing a member formed in a U-shaped cross-section by bending both sides in the width direction of the plate-like member to the mounting plate 51a. The holder 51b is provided with an insertion hole for inserting the attachment base of the first tillage claw 52, the second tillage claw 53, and the third tillage claw 54, and an attachment hole for inserting the shaft portion of the bolt 57. Yes.

  A first tilling claw 52 is attached to the attachment plate 51 a located on the front side of the tilling shaft 51. A second tilling claw 53 is attached to the attachment plate 51 a located second from the front side of the tilling shaft 51. Further, the third tillage claw 54 is attached to the attachment plate 51 a located third from the front side of the tillage shaft 51.

  The first to third tilling claws 52, 53, and 54 are attached to a holder 51b, mounting bases 52a, 53a, and 54a, and vertical blade portions 52b, 53b, and 54b that continuously extend from the mounting bases 52a, 53a, and 54a, Horizontal blade portions 52c, 53c, 54c extending continuously from the vertical blade portions 52b, 53b, 54b.

  The attachment bases 52a, 53a, 54a have a predetermined width dimension and are formed to extend linearly toward the vertical blades 52b, 53b, 54b. In the state where the first to third tilling claws 52, 53, and 54 are attached to the tilling shaft 51, the attachment bases 52 a, 53 a, and 54 a are directed outward in the radial direction of the tilling shaft 51. Insertion holes 52d, 53d, and 54d for inserting the shafts of the bolts 57 are provided at the center in the width direction of the attachment bases 52a, 53a, and 54a. The first to third tilling claws 52, 53, 54 are attached to the holder 51b by inserting the attachment bases 52a, 53a, 54a into the insertion holes of the holder 51b and fastening them with bolts 57 and nuts 58.

  When the first to third tilling claws 52, 53, 54 are attached to the tilling shaft 51, the rotation of the tilling shaft 51 from the vertical blade portions 52b, 53b, 54b toward the horizontal blade portions 52c, 53c, 54c. It has a shape that curves in the direction opposite to the direction. The first to third tilling claws 52, 53, 54 are attached to the tilling shaft 51, and the horizontal blade portions 52 c, 53 c, 54 c are connected to the tilling shaft 51 with respect to the vertical blade portions 52 b, 53 b, 54 b. It is curved in the axial direction.

  Specifically, when the first and second tilling claws 52 and 53 are attached to the tilling shaft 51, the horizontal blade portions 52c and 53c are located on the rear end side of the tilling shaft 51 with respect to the vertical blade portions 52b and 53b. Is curved. Further, in the state where the third tilling claw 54 is attached to the tilling shaft 51, the horizontal blade portion 54c is curved toward the front end side of the tilling shaft 51 with respect to the vertical blade portion 54b.

  In the state where the first to third tilling claws 52, 53, 54 are attached to the tilling shaft 51, the rotation direction side of the tilling shaft 51 of the vertical blade portions 52b, 53b, 54b and the horizontal blade portions 52c, 53c, 54c is a blade. It becomes an edge, and the opposite side of the rotation direction becomes a peak.

  When the first to third tilling claws 52, 53, and 54 are attached to the tilling shaft 51, the rotation radius R <b> 2 of the second tilling claw 53 is larger than the rotation radius R <b> 1 of the first tilling claw 52. Further, when the first to third tilling claws 52, 53 and 54 are attached to the tilling shaft 51, the rotation radius R 3 of the third tilling claw 54 is larger than the rotation radius R 2 of the second tilling claw 53.

  A hard alloy portion 54e made of an alloy having higher hardness than the other portions from the vertical blade portion 54b to the horizontal blade portion 54c is formed on the edge portion of the vertical blade portion 54b and the horizontal blade portion 54c of the third tillage claw 54. Is provided. The hard alloy portion 54e is formed by welding a hard alloy to a surface opposite to the direction in which the horizontal blade portion 54c is curved with respect to the vertical blade portion 54b. The hard alloy portion 54e protrudes from the surface opposite to the direction in which the horizontal blade portion 54c is curved with respect to the vertical blade portion 54b.

  The end of the hard alloy portion 54e on the attachment base portion 54a side is located in the vicinity of an extension line in the direction in which the attachment base portion 54a extends. Moreover, the edge part by the side of the cut of the hard alloy part 54e is located in the vicinity of the edge part of the side blade part 54c. Here, the end of the hard alloy portion 54e on the attachment base portion 54a side is in the width direction of the rotation center of the tillage shaft 51 and the insertion hole 54d of the attachment base portion 54a in a state where the third tillage claw 54 is attached to the tillage shaft 51. Although it is desirable that the end of the hard alloy portion 54e is located on the extension line of the central portion, the end of the hard alloy portion 54e intersects the extension line in the extending direction of the attachment base portion 54a within the range of the width dimension of the attachment base portion 54a. The degree is acceptable.

  Moreover, the edge part of the peak side of the hard alloy part 54e is extended along the peak at a predetermined distance from the peak of the vertical blade part 54b and the horizontal blade part 54c to the blade edge side.

  A bending start point P1, which is a boundary between the vertical blade portion 54b and the horizontal blade portion 54c, and an intersection of a bending start line LS at which the bending of the horizontal blade portion 54c starts with respect to the vertical blade portion 54b and the blade edge, is The distance D is farthest from the base end of the mounting base 54a in the direction in which the mounting base 54a extends.

  The cover body 55 includes an outer peripheral plate portion 55a that covers the outer peripheral portion of the first to third tilling claws 52, 53, 54 excluding the side portion and the lower portion on the old rod K side, and a tilling shaft 51 from the front end portion of the outer peripheral plate portion 55a. A front plate portion 55b extending radially inward, and a rear plate portion 55c extending radially inward of the tillage shaft 51 from the rear end portion of the outer peripheral plate portion 55a. The front plate portion 55b covers only the outer peripheral side of the first to third tilling claws 52, 53, 54 along the front end portion of the outer peripheral plate portion 55a. Moreover, the back board part 55c has covered the part containing the tilling axis | shaft 51 on the opposite side to the old tack K of the 1st-3rd tilling claws 52,53,54. The rear plate portion 55c is disposed, for example, at an interval of 10 mm from the hard alloy portion 54e provided on the vertical blade portion 54b of the third tillage claw 54.

  The soil removing member 56 is formed by bending a plate-like member. The soil removal member 56 covers the rotation direction side of the holder 51b that holds the attachment base portion 54a of the third tillage claw 54, and extends outward in the radial direction of the tillage shaft 51 from the holder 51b, so that the first soiling member 56 is held by the holder 51b. It covers the rotational direction side around the mounting base 54a of the three tillage claws 54. The soil removal member 56 is formed such that the dimension in the width direction is larger than the dimension obtained by combining the mounting plate 51a and the holder 51b and the thickness dimension of the vertical blade portion 54b of the third tillage claw 54. The soil removing member 56 is attached to the holder 51 b together with the third tilling claw 54 by a bolt 57 and a nut 58.

  As shown in FIG. 1, the trimming unit 60 is provided so as to extend in the width direction, and a rotating shaft 61 that is rotated by power transmitted to the input shaft 12, a polyhedral drum 62 provided on the rotating shaft 61, And a cylindrical portion 63 provided so as to extend in the width direction from the end portion of the polyhedral drum 62.

  The plastering machine 1 configured as described above is attached to the traveling machine body T, and moves along with the traveling machine body T at a position shifted laterally with respect to the traveling position of the traveling machine body T to perform the smearing operation. The coater 1 cuts the upper part of the old basket K by the heaven processing unit 40 and cuts the lower part and the side surface of the old basket K by the pretreatment unit 50. The hail coater 1 supplies the soil of the old hail K cut by the heaven field processing unit 40 and the pre-processing unit 50 to the old hail K side by the pre-processing unit 50. The hammer coater 1 forms a new basket by applying the soil supplied to the old hammer K side by the pretreatment unit 50 to the surface of the old hammer K by the trimming unit 60.

  In the pre-processing unit 50 at the time of the haze coating work, the soil of the old hail K that has been cut and sprung up by the first to third tilling claws 52, 53, 54 is guided to the cover body 55, and the old hail K Supplied to the side. The soil guided by the cover body 55 moves toward the old fence K side while contacting the inner surface of the cover body 55. For this reason, a part of the soil guided by the cover body 55 tends to adhere to the inner surface of the cover body 55, and in particular, a large amount may adhere to the rear plate portion 55 c of the cover body 55.

  At this time, in front of the rear plate portion 55c of the cover body 55, the third tillage claw 54 is moved along the front surface of the rear plate portion 55c. Therefore, the soil S adhering to the rear plate portion 55c of the cover body 55 is scraped off and removed by the third tilling claw 54 and the soil removing member 56 attached to the holder 51b holding the third tilling claw 54.

According to the tilling claw of the present embodiment, the end portion on the attachment base portion 54a side of the hard alloy portion 54e of the third tillage claw 54 is located in the vicinity of the extension line in the extending direction of the attachment base portion 54a.
Thereby, when used as the third tilling claw 54 adjacent to the rear plate portion 55c of the cover body 55, the hard alloy portion 54e can be brought into contact with the soil adhered to the rear plate portion 55c. It is possible to suppress the occurrence of uneven wear in which the vertical blade portion 54b is greatly worn with respect to the horizontal blade portion 54c, thereby extending the life of the third tillage pawl 54 and preventing the tillage performance of the coater 1 from being lowered. It becomes possible.

Moreover, the hard alloy part 54e of the 3rd tillage nail | claw 54 is provided in the surface on the opposite side to the direction where the horizontal blade part 54c is curving with respect to the vertical blade part 54b.
As a result, the hard alloy portion 54e of the third tillage claw 54 can be brought into contact with the soil adhering to the rear plate portion 55c of the cover body 55, and therefore, the partial wear of the vertical blade portion 54b and the horizontal blade portion 54c. Can be further suppressed.

Further, the end portion on the peak side of the hard alloy portion 54e of the third tillage claw 54 extends along the peak at a predetermined distance from the peak of the vertical blade portion 54b and the horizontal blade portion 54c to the blade edge side.
As a result, the wear on the side surfaces of the vertical blade portion 54b and the horizontal blade portion 54c generated by removing the soil adhering to the rear plate portion 55c of the cover body 55 is uniform over the vertical blade portion 54b and the horizontal blade portion 54c. As a result, it is possible to further extend the life of the third tillage claw 54 and to prevent a decrease in tillage performance.

Further, the bending start point P1 that becomes the boundary between the vertical blade portion 54b and the horizontal blade portion 54c of the blade edge is a position farthest from the attachment base portion 54a in the extending direction of the attachment base portion 54a.
Accordingly, when the tillage shaft 51 is rotated and the old tillage K is cut by the third tillage pawl 54, the soil of the old tillage K can be evenly contacted with the transverse blade portion 54c, and the entire horizontal blade portion 54c Thus, the third tillage claw 54 can be made to have a long life and prevent the tillage performance from being lowered.

In addition, the third tillage claw 54 is used in the pretreatment unit 50 of the tack coater 1.
As a result, the soil attached to the rear plate portion 55c of the cover body 55 of the pretreatment unit 50 is removed by the third tillage claw 54 that can extend the life and prevent the deterioration of the tillage performance. It is possible to reduce the cost required for maintenance of the coating machine 1.

The third tilling claw 54 is provided with a soil removing member 56 for removing soil adhering to the rear surface in the cover body 55.
As a result, it is possible to prevent wear near the holder 51b to which the third tillage claw 54 is attached and the attachment base 54a of the third tillage claw 54, so that it is possible to further reduce the cost required for the maintenance management of the hail coater 1. It becomes possible.

  In the above-described embodiment, the holder 51b that holds the third tillage claw 54 is shown with the soil removal member 56 attached at the same time as the third tillage claw 54. However, the present invention is not limited to this. Even if the soil removal member 56 is not provided and only the third tillage claw 54 is held by the holder 51b, the soil adhered to the rear plate portion 55c of the cover body 55 is removed from the mounting plate 51a and the third tillage. It can be scraped off by the nail 54.

  Moreover, in the said embodiment, as the soil removal member 56, while covering the rotation direction side of the holder 51b holding the attachment base 54a of the 3rd tillage nail 54, it extends to the radial direction outer side of the tillage axis | shaft 51 from the holder 51b, Although what covers the rotation direction side around the mounting base portion 54a of the third tillage claw 54 held by the holder 51b is shown, the present invention is not limited to this. For example, as shown in FIG. 8, the soil removal member 59 covers the rotation direction side of the holder 51b that holds the attachment base portion 54a of the third tillage claw 54 and attaches the third tillage claw 54 held by the holder 51b. You may make it cover the rotation direction side of the periphery of a part of base 54a and the vertical blade part 54b.

  In the above embodiment, the soil removal member 56 covers the rotation direction side of the holder 51b holding the third tillage claw 54. However, the soil removal member covers the opposite side of the rotation direction. However, the soil S adhering to the rear plate portion 55c can be removed as in the above embodiment.

  In addition to the above, as the soil removing member 56, various lengths in the radial direction of the tillage shaft 51 such as those covering only the holder 51b and those covering the entire third tillage claw 54 are conceivable.

DESCRIPTION OF SYMBOLS 1 Spider coater 50 Pretreatment part 51 Cultivation shaft 51b Holder 54 Third tillage claw 54a Mounting base 54b Vertical blade part 54c Horizontal blade part 54e Hard alloy part 55 Cover body 55c Rear plate part 56 Soil removal member 59 Soil removal member 59

Claims (4)

A mounting base attached to the tilling shaft; a vertical blade extending continuously from the mounting base; and a horizontal blade extending continuously from the vertical blade; from the vertical blade to the horizontal blade It is a tilling claw that is bent in the direction opposite to the rotation direction of the tilling shaft and the horizontal blade portion is bent in one of the rotation axis directions of the tilling shaft with respect to the vertical blade portion,
The tilling shaft is used for a pre-processing unit that plows and piles up an old paddle of a paddle coater,
The said tilling nail is arrange | positioned in the position adjacent to the rear-plate part of the cover body which covers the axial direction edge part of the said tilling axis among the several tilling nail arrange | positioned in the axial direction of the said tilling axis | shaft, The said horizontal blade part Is curved in a direction opposite to the rear plate portion of the cover body in the axial direction of the tilling shaft,
On the blade edge side of the vertical blade portion and the horizontal blade portion, a hard alloy portion having a higher hardness than the other portions from the vertical blade portion to the horizontal blade portion is provided,
The end of the hard alloy portion on the mounting base side is located at substantially the same position as the bladed end of the vertical blade portion,
The end portion on the ridge side of the hard alloy portion extends along the ridge at a substantially constant distance from the ridge of the vertical blade portion and the side blade portion to the blade edge side ,
The rotation radius of the tillage claw is larger than the rotation radius of other tillage claws adjacent in the direction opposite to the rear plate portion of the cover body among the plurality of tillage claws arranged in the axial direction of the tillage shaft. Tillage nail characterized by. The said hard alloy part is provided in the surface on the opposite side to the direction in which the said horizontal blade part curves with respect to the said vertical blade part in the said vertical blade part and the said horizontal blade part. The tilling nail as described in. The tilling point according to claim 1 or 2, wherein the intersection of the boundary line between the vertical blade portion and the horizontal blade portion and the blade edge is farthest from the mounting base in the direction in which the mounting base extends. claw. The mounting base portion are formed so as to extend in Tateha side from the mounting base to cover one side of the rotational direction of the cultivating shaft attachment portion to be attached, soil removal for removing soil adhering to the inner surface of the cover body The tilling nail according to any one of claims 1 to 3, comprising a member.

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