JPH0737443Y2 - Holding means for tilling nails - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a holding means for a tilling claw that allows easy attachment / detachment of the tilling claw and securely holds the tilling claw.

(Prior Art) Since Hokkaido has a wide range of farms, large tractors imported from Western countries have been used.

The plowing width of these large tractors is wider than that of domestic tractors, and large plowing claws are used.

As a holding means for such a large tilling claw, there is, for example, one shown in FIG. That is, a plate-like mounting flange 103 having high rigidity is fixed to the cultivating shaft 101 of the rotary portion by means such as welding, and the cultivating claw 105 is attached to the mounting flange 103.
The mounting portion 107, which is the base of the above, was mounted, and both were fastened and fixed by bolts and nuts 109 at two locations.

(Problems to be solved by the invention) However, in such a conventional holding means,
In order to secure the rigidity of the mounting flange 103, it is necessary to form a thick wall thickness of the mounting flange 103, which increases the weight of the rotary part and causes inconvenience in handling, and increases the horsepower consumption of the engine. Along with this, there have been problems such as an increase in fuel consumption.

Further, the plowing claw 105 is fastened and fixed to the mounting flange 103 with bolts and nuts 109 at two places, and moreover, the plowing shaft 1
Since 01 has a large number of tillers 105 attached, tillers 1
The replacement work when replacing 05 was extremely complicated and time-consuming.

Therefore, this invention makes it possible to easily and easily carry out the work of attaching and detaching the plowing pawl, and moreover, it is possible to securely support it, and further, the wall thickness of the mounting flange can be made thin, so that the weight of the rotary portion can be reduced. It is an object of the present invention to provide a holding means for a tilling nail that can achieve the above.

[Means for Solving the Problems] (Means for Solving the Problems) In order to achieve the above object, the present invention has a plurality of mounting flanges provided on a tilling shaft in a direction intersecting with a mounting direction of a tilling claw, and , Two cut lines having a length corresponding to the width of the mounting portion of the tilling claw are provided within the length range.
The middle portion between the cutout lines of the book is bent outward from the side surface of the flange 1, the radially inner and outer portions of the middle portion are bent outward from the other side surface of the flange, and are formed by these bent portions when viewed from the mounting direction. By forming the cross section of the hole so as to correspond to the cross section of the mounting portion, and by providing one fastener for connecting the intermediate portion and the mounting portion, and a fixing means for fixing the mounting portion to the bent portion. The plowing claws are held on the mounting flange.

(Operation) According to the above configuration, since the mounting portion of the tilling claw is inserted and fixed in the holder portion which is the hole of the bent portion of the mounting flange, the fixing tool such as one bolt and nut can be used to ensure the operation. Can be held.

Therefore, the work of attaching and detaching the tiller becomes easy and easy.

Further, since the force applied to the tilling claws at the time of tilling work is received by the central portion of the mounting flange, the thickness of the mounting flange can be made thinner than in the past, and the weight of the rotary portion can be reduced.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of a main part of a holding means for a plowing claw according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIG. 3 is III- in FIG. FIG. 3 is a sectional view taken along the line III-III.

As shown in FIG. 1, a plurality of (only one is shown in FIG. 1 and the others are omitted) mounting flanges 3 are fixed to the outer peripheral surface of the tiller shaft 1 at appropriate intervals by means such as welding. There is.

The mounting flange 3 is provided with a holder portion 9 into which the mounting portion 7, which is the base portion of the tilling claw 5, is detachably inserted.

The holder portion 9 is cut out at two positions A and B at appropriate intervals in the direction intersecting the mounting direction of the tilling claws 5 and at a length corresponding to the width of the mounting portion 7. Inner portions of the lines A and B, that is, an intermediate portion between two places is bent outward from one side surface of the mounting flange to form a holding portion 9a having a U-shaped cross section, and a portion other than the cutout portion, that is, The inner and outer portions in the radial direction are bent outward from the other side surface of the mounting flange 3 to form a holding portion 9b having a U-shaped cross section.

The holder portion 9 which is a hole of the bent portion constituted by the holding portion 9a and the holding portion 9b as viewed from the mounting direction has a rectangular cross section substantially similar to the rectangular cross section of the mounting portion 7 of the tillage claw 5, The part 7 can be inserted.

The holding portion 9a is provided with a bolt through hole 13 corresponding to one bolt through hole formed in the mounting portion of the tilling claw 5.

Therefore, the mounting portion 7 of the tiller 5 is inserted into the holder portion 9 of the mounting flange 3, and the bolt 15 is inserted into the bolt through hole 13 of the holding portion 9a of the holder portion 9 and the bolt through hole 11 of the mounting portion 7, The mounting portion 7 is fastened and fixed to the bent portion by screwing the nut 17, so that the tilling claw 5 is held by the mounting flange 3.

With the above configuration, when the cultivating shaft 1 is rotated in the direction of arrow C in FIG. 1, soil plowing is started by the cultivating claw 5, but the reaction force due to the external force at that time is at the center of the height of the bent portion of the mounting flange 3. It is received at its center 3a (on the center line of the flange plate). Therefore, the wall thickness of the mounting flange 3 can be formed thinner than the conventional one, and the weight of the rotary portion can be reduced. In addition, the mounting portion 7 of the tiller 5
Since it is gripped and fixed by the holder portion 9, it can be securely held by one bolt and nut 15,17. For this reason, the work of attaching and detaching the plow claw 5 becomes easy and easy.

FIG. 4 shows another embodiment of the present invention, which has a hole cross section having inclined surfaces 21, 23 symmetrical with respect to the center line of the holding portions 19a, 19b of the mounting flange 3. Is forming.

Then, as in the case of FIG. 1, the mounting portion 7 is inserted into the holder portion, which is a hole formed by the bent portion, and then the retaining pin 2 is inserted into the respective insertion holes of the holding portion 19a and the mounting portion 7 which are intermediate portions.
5 is inserted and a cotter pin is used to prevent it from coming off.

According to this embodiment, the mounting portion 7 of the plow claw 5 is the plow claw 5.
Rotation around the stop pin 25 (in the direction of arrow D in FIG. 1) is caused by the reaction force applied to the inclined pins 21 and 23 (in the vicinity of the upper portion of the line A and the lower portion of the line B in FIG. It is pressed down in the vicinity) and fixed in place.

Therefore, the plow tab can be held more securely by the mounting flange, and the retaining pin 25 can be used instead of the bolts and nuts, so that the work of attaching and detaching the plow tab 5 can be performed more easily and easily. You can

The same elements as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 5 shows still another embodiment of the present invention.

In this embodiment, the outer peripheral portion 3a of the mounting flange 3 is the portion of the holder 9 into which the mounting portion 7 of the tilling claw 5 is inserted, and the streamlined curved portion 3b corresponding to the curved curve of the blade portion of the tilling nail 5 is formed. It was formed.

According to this embodiment, in addition to the same effects as the above-mentioned embodiments, grass during cultivating work, straw and the like are smoothly swept along and move along the curved portion 3b, so that the winding can be prevented. .

The same elements as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

[Effects of the Invention] As is clear from the above description, according to the configuration of the present invention, since the mounting portion of the plowing pawl is inserted and fixed in the holder portion by cutting and bending the mounting flange, the number of fasteners is small. Can be securely held. Therefore, the attachment / detachment work at the time of exchanging the tilling claw becomes easy and easy.

Further, the wall thickness of the mounting flange can be made thinner than that of the conventional one, so that the weight of the rotary portion can be reduced and the engine horsepower consumption can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a holding means for a plowing claw according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIG. 3 is III- in FIG. III is a sectional view taken in the direction of the arrow, FIG. 4 is a sectional view taken in the same direction as FIG. 2 of the holding means of the tilling pawl according to another embodiment of the present invention, and FIG. 5 is a further embodiment of the present invention. FIG. 6 is a side view of the holding means for the tilling claw according to FIG. 6, and FIG. 6 is a side view of the holding means for the tilling claw according to the conventional example. 1 ... Tilling shaft, 3 ... Mounting flange 5 ... Tilling claw, 7 ... Mounting part 9 ... Holder part, 13 ... Bolt 15 ... Nut

Claims (3)

[Scope of utility model registration request] 1. Two cutouts are provided on a plurality of mounting flanges provided on the tilling shaft, in a direction intersecting with the mounting direction of the tilling claw and at a length corresponding to the width of the mounting portion of the tilling claw. A line is provided, and the middle portion between the two cutout lines within the length range is bent outward from the side surface of the flange 1, and the radially inner and outer portions of the middle portion are bent outward from the other side surface of the flange to be mounted. When viewed from the direction, the cross section of the hole formed by these bent portions is formed so as to correspond to the cross section of the mounting portion, and one fastener for connecting the intermediate portion and the mounting portion and the mounting portion are bent. A holding means for a tilling claw, wherein the tilling claw is held by a mounting flange by providing a fixing means for fixing the tilling claw to the part. 2. The fastening means is a bolt and a nut, and the fixing means inserts a bolt into the insertion hole of the mounting portion and the insertion hole of the intermediate portion which are inserted into the hole of the bent portion. The means for holding a tilling claw according to claim 1, wherein the nut is fixed by screwing. 3. The fastening means is a fastening pin, and the fixing means inserts the fastening pin into the insertion hole of the mounting portion and the insertion hole of the intermediate portion which are inserted into the hole of the bent portion. 2. The means for holding a tilling pawl according to claim 1, wherein the bending portion fixes the cross-sectional portion of the mounting portion by pressing it symmetrically with the symmetrical inclined surface of the hole cross section based on the rotation of the tilling pawl. .