JP4191587B2 - Tillage claw mounting device - Google Patents

Description

  The present invention relates to a tillage device, and more particularly to a tillage claw attachment device applicable to a forward / reverse rotary tiller capable of appropriately switching between a down cut rotary and an up cut rotary.

2. Description of the Related Art Conventionally, in a rotary cultivating apparatus, when a tilling claw cuts into the cultivated soil, the cultivating soil is generated by giving an angle to the cultivating claw. Moreover, in order to replace a tilling nail according to the situation and purpose of use of the soil, it is considered that the tilling nail can be detached from the tilling nail mounting device and the interval can be freely set. For example, in Patent Document 1, a flower-shaped rotor in which tilling claws alternately bent to the opposite side are radially attached around a disc-shaped claw holder having a shaft insertion hole in the center portion thereof is a shaft insertion hole. The point which is fixed to the traveling wheel shaft of the tiller by an attachment boss attached to one side is described. In Patent Document 2, in order to fix the screw rotor so that the position of the screw rotor can be changed, pin holes are formed at predetermined intervals in the axial direction so that the pin holes are aligned with the pin holes of the cylindrical boss portion of the rotor. It is described that the tilling shaft has a polygonal outer peripheral surface, and a cylindrical boss portion is adapted to this. Patent Document 3 discloses that pin holes drilled in the bosses of fertilizer stirring claws, spiral claws, and earth claw claws are pin holes drilled in the extension claw shafts, and locking pins are used to set the distance between them. It is described that it can be adjusted. Further, in Patent Document 4, a fixing member made of a bolt and a nut is inserted into a base hole drilled in the base and a mounting hole drilled in the claw so as to pass through a notch formed in the base. It is described that the claw part is inclined and fixed to the base part by disposing the claw part to the base part, and the base part is arranged at a predetermined interval by a cylindrical body for maintaining a space on a rotary shaft having a hexagonal cross section. Yes.
Japanese Utility Model Publication No. 46-11841 Japanese Utility Model Publication No. 52-104502 Japanese Utility Model Publication No. 60-46803 Japanese Patent No. 3451086

  In the tillage claw attachment devices described in Patent Documents 1 to 3, the tilling action such as the reversal of tillage is not efficient in view of the attachment shape of the claw member and the screw. In order to perform such tilling operation efficiently, in Patent Document 4, the claw portion is disposed so as to pass through the notch portion of the tilling claw attachment device, and the claw portion is inclined from the base and fixed to the cultivation claw attachment device. Thus, it is possible to increase the effect of reversing the cultivated soil. However, in the thing of patent document 4, since only the tilling nail member is inclined, there is a limit in the grade of the tilling nail.

  Accordingly, an object of the present invention is to provide a tilling claw attachment device that can further greatly tilt the claw member from the base and can obtain a more efficient tilling action.

In the tillage claw attachment device according to the present invention, a fitting convex portion that fits into a plurality of grooves formed along the axial direction on the outer periphery of the rotary shaft is formed on the inner peripheral surface, and the rotary shaft in the axial direction. A mounting tube that is slidably mounted, a positioning pipe that is mounted on the rotary shaft between the mounting tubes, and a plurality of positioning holes that are fixed to the mounting tube and that are formed in the peripheral portion. A claw member having two attachment holes formed at a predetermined interval, and the claw member penetrating through the positioning hole and the attachment hole in a state where the attachment hole is aligned with the positioning hole. the a fixing member for removably secured to the base, the mounting surface of at least the pawl member of the base is inclined at a predetermined angle with respect to a plane perpendicular to the axis of rotation of said rotary shaft, said pawl The member is one of the bases Possible is attached to the base by one of the mounting holes are arranged on one surface side of the base portion and the other of the mounting holes are arranged on the other surface of the base with disposed on the side which is attachable to the base It is characterized by that. Further, the two claw members are respectively fixed to the base at positions symmetrical with respect to the center of the rotary shaft.

  In the present invention, since the mounting surface of the base portion is inclined at a predetermined angle with respect to a plane perpendicular to the rotation center axis of the rotation drive shaft by having the above-described configuration, the claw member fixed to the base portion is provided. It can be in a state of being greatly inclined from the base with respect to the rotation direction, and the cultivated soil can be efficiently reversed. Then, the inclination angle of the base itself can be changed larger than the inclination angle of the claw member, and the degree of freedom in setting the inclination angle of the claw member becomes larger than that described in Patent Document 4. Further, since the claw member itself can change the inclination angle, the inclination angle can be appropriately adjusted according to the state of the cultivated soil.

  Furthermore, if the base is formed in a flat plate shape so that the whole is inclined with respect to the rotational drive shaft, the inclination angle can be easily set with a simple configuration. Further, the mounting position of the base portion can be set as appropriate by providing the base portion with an attachment tube body that is fitted to the rotation drive shaft and is slidable only in the rotation center axis direction. In addition, by setting the position of the claw member to be fixed to the base to a plurality of positions shifted by a predetermined angle with respect to the rotation drive shaft, a plurality of claw members can be fixed or the claw member can be fixed at a position shifted by the base. Can be.

  Further, a plurality of positioning holes are drilled in the peripheral portion in the base portion, two mounting holes are drilled in the claw member at a predetermined interval, and the positioning holes and the positioning holes are aligned with the positioning holes. By providing a fixing member that penetrates the mounting hole and fixes the claw member to the base, the claw member can be easily attached to and detached from the base, and work such as setting change of the inclination angle of the claw member can be performed efficiently. it can. In addition, the claw member is disposed on one surface side of the base and the other mounting hole is disposed on the other surface of the base so that the claw member is inclined with respect to the base. The claw member can be further inclined with respect to the rotation drive shaft.

  Also, if the two claw portions are fixed to the base at positions that are symmetric with respect to the center of the rotation drive shaft, the two claw portions are alternately pressed into the cultivated soil during one rotation, thereby making the cultivation work more efficient. Is possible.

  Further, by fixing the plurality of base portions to the rotation drive shaft at a predetermined interval, it is possible to perform the tilling work by simultaneously rotating the plurality of tilling claw members by the rotary shaft, and the speed can be increased. Also, by placing each claw member fixed to each base part at a predetermined angle when viewed from the axial direction of the rotary drive shaft, the cultivation claw member is sequentially pressed into the cultivated soil, and the load applied to the whole through the cultivation work is reduced. Can be small.

  Hereinafter, an embodiment related to a tillage claw attaching device according to the present invention will be described in detail. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention clearly indicates that the invention is particularly limited in the following description. Unless otherwise specified, the present invention is not limited to these forms.

  FIG. 1 is a perspective view of an embodiment according to the present invention. The rotary shaft 1 extending in the horizontal direction is rotatably attached to a known forward / reverse rotary device, and is rotated from a drive source such as a tractor via a drive transmission mechanism. Then, the forward / reverse rotary device advances in a direction orthogonal to the rotation center axis of the rotary shaft 1. A tilling claw mounting device 2 is fixed to the rotary shaft 1, and the tilling claw mounting device 2 includes a base 3 and two claw members 5.

  2 is a view of the tillage claw attachment device 2 as viewed from the direction of the rotation center axis of the rotary shaft 1 (FIG. 2A) and a view of the rotary claw 1 as viewed from a direction orthogonal to the rotation center axis (FIG. 2B). 3 shows a state in which the base 3 and the claw member 5 are separated.

  The base 3 is a metal disc having a predetermined thickness (for example, about 1 cm), and an insertion hole 4 through which the rotary shaft 1 is inserted is formed in the center thereof. Since the insertion hole 4 is drilled in a direction inclined by an angle θ from a straight line perpendicular to the plane Q along the surface of the base portion 3, when the rotary shaft 1 passes through and is fixed to the insertion hole 4, the rotary shaft The base 3 is fixed in a state where it is inclined by an angle θ with respect to the plane P perpendicular to the rotation center axis of 1. As a method of fixing the base 3 to the rotary shaft 1, for example, a contact portion between the insertion hole 4 and the rotary shaft 1 may be fixed by welding. Six circular positioning holes 9 are drilled along the outer peripheral edge 8 in the base 3, and each positioning hole 9 is located on the circumference of a circle centering on the insertion hole 4, They are shifted by 60 degrees.

  The claw member 5 is formed from a metal plate-like body having a predetermined thickness (for example, about 5 mm), and has two attachment holes fixed to the two positioning holes 9 at the base portion attached to the base 3. 7 is drilled. In addition, a notch portion 6 that is curved so as to straddle the outer peripheral edge 8 of the base portion 3 is formed between the two mounting holes 7 in the root portion. Then, the blade portion is formed in an arc shape so as to swell outward from the outside of each mounting hole 7, and both intersect to form the tip of the claw member 5. A working surface 15 is formed in a flat shape between the blade portions on both sides, and the tip portion 16 of the claw member 5 is formed to be curved at a predetermined angle with respect to the working surface 15.

  The two claw members 5 are fixed at positions that are symmetric with respect to the insertion hole 4 of the base 3. When fixing the claw member 5, the mounting holes 7 of the claw member 5 are aligned with the positioning holes 9 of the base portion 3 and fixed by the fixing members 10 made of bolts and nuts. The claw member 5 is arranged such that one mounting hole 7 is disposed on one surface side of the base 3 and the other mounting hole 7 is disposed on the other surface of the base 3 so as to be aligned with the positioning hole 9 and fixed. Therefore, the claw member 5 can be fixed in an inclined state with respect to the base 3 and can be in a state of being inclined more greatly with respect to the rotation center axis of the rotary shaft 1 (see FIG. 2B). . In this example, bolts and nuts are used as the fixing members. However, fixing may be performed using pins, and other fixing members may be used. Further, in order to facilitate the fixation, the mounting hole 7 and the positioning hole 9 may be in close contact with each other around the mounting hole along the base surface. In addition, by inserting and fixing the washer between the attachment hole 7 and the positioning hole 9, the attachment angle of the claw member 5 can be adjusted according to the thickness of the washer.

  In addition, about the fixing method of the nail | claw member 5, an example as shown in FIG. 4 is also given. In this example, each mounting hole 7 of the claw member 5 is arranged and fixed on the same surface side of the base 3. If the claw member 5 is fixed in this way, the claw member 5 can be in the same inclined state as the base 3, and the inclination angle of the claw member 5 with respect to the rotary shaft 1 is set smaller than in the case of FIG. Can do.

  In this way, by setting the claw member 5 to be in a state of being largely inclined with respect to the rotation center axis of the rotary shaft 1, as shown in FIG. Since it is set to extend outward in the direction of the central axis of rotation, the reversal of the cultivated soil is improved, and the plowing operation can be performed efficiently.

  FIG. 5 shows another example of fixing the tilling claw mounting device 2 to the rotary shaft 1, and is a view of the tilling claw mounting device 2 as viewed from the rotation center axis direction of the rotary shaft 1 (FIG. 5A). And FIG. 5B is a view (FIG. 5B) viewed from a direction orthogonal to the rotation center axis of the rotary shaft 1.

  A plurality of groove portions 13 are formed on the outer periphery of the rotary shaft 1 along the rotation center axis of the rotary shaft 1, and each groove portion 13 is formed by being shifted by 60 degrees about the rotation center axis of the rotary shaft 1. Yes. A cylindrical mounting tube 11 is fixed to the center of the base 3 through the base 3, and the central axis of the mounting tube 11 is a straight line perpendicular to the plane along the surface of the base 3. It is set in a direction inclined by a predetermined angle. Further, on the inner peripheral surface of the attachment tube body 11, a fitting convex portion 14 that fits into a groove portion 13 formed on the outer periphery of the rotary shaft 1 is formed. One opening of the attachment tube 11 is fitted from the end of the rotary shaft 1 and is mounted by sliding in the axial direction of the rotary shaft 1. The attachment tube body 11 is slidable in the axial direction of the rotary shaft 1, but is attached so as not to rotate in the rotational direction of the rotary shaft 1. A positioning pipe 12 having a predetermined length is attached to both sides of the attachment tube body 11. The positioning pipe 12 is formed in a cylindrical shape that is the same shape as the mounting tube 11, and a fitting convex portion that fits into the groove portion 13 is formed on the inner peripheral surface in the same manner as the mounting tube 11. Accordingly, when the plurality of base portions 3 are fixed to the rotary shaft 1, if the length of the positioning pipe 12 is determined corresponding to the interval between the base portions 3, the interval between the base portions 3 can be maintained in a stable state. Can do.

  In FIG. 5, the attachment method of the claw member 5 to the base 3 is the same as the method shown in FIG.

  6 and 7 are views showing a state in which a plurality of tillage claw attaching devices according to the present invention are attached to the rotary shaft 1. In FIG. 6, the tillage claw attaching device 2 shown in FIG. 2 is arranged at a predetermined interval on a round bar-like rotary shaft 1 and fixed by welding. The claw member 5 is fixed to a positioning hole 9 drilled in the base portion 3 by sequentially shifting by 60 degrees from the base portion 3 disposed at one end of the rotary shaft 1. By shifting and fixing the claw member 5 in this manner, the claw member 5 is sequentially press-fitted into the cultivated soil at the time of tillage, so that the load can be reduced.

  In FIG. 7, the tillage claw attachment device 2 shown in FIG. 5 is mounted on the rotary shaft 1 in which the groove 13 is formed as shown in FIG. Since the tillage claw attachment device 2 is slidable in the axial direction of the rotary shaft 1, the distance between the tillage claw attachment devices 2 can be freely set by adjusting the length of the positioning pipe 12. And by attaching a fixing member to the both ends of the rotary shaft 1 so that the attachment pipe body 11 and the positioning pipe 12 of each tillage claw attachment device 2 do not move in the axial direction, the tillage claw attachment device 2 is in a stable state. Can be fixed.

  Further, since the tillage claw attachment device can be easily detached from the rotary shaft 1, the number of attachments of the tillage claw attachment device 2 can be set as appropriate. Moreover, the tilling nail attachment device 2 having a different inclination angle of the base 3 can be attached, and the inclination angle of the nail member 5 can be appropriately set according to the work contents such as roughening of the cultivation soil, grooving, or staking. Is possible. Further, when a plurality of tillage claw attachment devices are mounted as shown in FIG. 6 and FIG. 7, the claw member is fixed so that the curved tip end portion is directed toward the center portion of the rotary shaft 1, thereby providing a soiling effect. Can be. And if the attachment position to the base 3 of the nail | claw member 5 is fixed to the positioning hole 9 shifted in order by each base 3, each nail | claw member 5 can be arrange | positioned spirally as shown in FIG. In this case, when the fitting convex portion 14 formed on the inner peripheral surface of the mounting tube 11 of each tillage claw attaching device 2 is fitted into the groove portion 13 of the rotary shaft 1, the fitting convex portion is displaced so that each claw member 5 is displaced. The portion 14 and the groove portion 13 may be combined and fitted.

It is a perspective view regarding the embodiment concerning the present invention. It is the figure seen from the direction orthogonal to the figure seen from the axial direction of FIG. 1, and an axial direction. It is a figure of the state which decomposed | disassembled the base and the nail | claw member. It is a figure which shows the example which fixed the nail | claw member to the base by another method in FIG. It is the figure seen from the axial direction regarding another embodiment regarding this invention, and the figure seen from the direction orthogonal to an axial direction. It is a figure which shows the example which fixed the some tilling nail attachment apparatus to the rotary shaft. It is a figure which shows another example which fixed the some tilling nail attachment apparatus to the rotary shaft.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotary shaft 2 Apparatus main body 3 Base part 4 Insertion hole 5 Claw member 6 Notch part 7 Mounting hole 8 Outer peripheral edge 9 Positioning hole
10 Fixing member
11 Mounting tube
12 Positioning pipe
13 Groove
14 Mating protrusion
15 Working surface
16 Tip

Claims (2)

A fitting tube that is formed on the inner peripheral surface with fitting projections that fit into a plurality of grooves formed along the axial direction on the outer periphery of the rotary shaft, and is slidably mounted on the rotary shaft in the axial direction. And a positioning pipe that is mounted on the rotary shaft between the mounting tube, and a base that is fixed to the mounting tube and has a plurality of positioning holes drilled in the peripheral portion, with a predetermined interval. A claw member having two mounting holes, and a fixing that detachably fixes the claw member to the base through the positioning hole and the mounting hole in a state where the mounting hole is aligned with the positioning hole. and a member, the mounting surface of at least the pawl member of the base is inclined at a predetermined angle with respect to a plane perpendicular to the axis of rotation of said rotary shaft, said pawl member, one side of the base Can be mounted on the base Tilling claws mounting device, characterized in that with it is arranged one of the mounting holes on one surface of the base by placing the other of the mounting hole on the other surface of the base is attachable to the base. 2. The tillage claw attachment device according to claim 1, wherein the two claw members are respectively fixed to the base at positions symmetrical with respect to the center of the rotary shaft.

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