JPH0563203U - Tilling claw mounting device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention aims to extend the life due to wear by making it possible to extend the mounting portion of the forward / reverse bidirectional plowing pawl even though it has a simple structure. [Means] In a device for mounting both forward and reverse cultivating claws on a holder radially fixed to a cultivating shaft, at least one of the holder and the cultivating claw has at least two rows of cultivating claws close to both ends in a longitudinal direction. With continuous or intermittent holes,
On the other hand, a number of bolt through holes corresponding to the number of rows are provided in the width direction of the tilling pawl, and nuts are screwed onto the holes and the bolts inserted into the through holes so that the tilling pawl can be attached to the holder so as to be extended. It is the one.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a forward / reverse bidirectional plowing pawl mounting device which supports a forward / reverse bidirectional plowing pawl mounting portion on a tiller shaft side holder.

[0002]

[Prior Art]

 Generally, a mounting device that detachably supports the mounting part of the tilling pawl on a holder provided on the side of the tilling shaft is well known.However, in the conventional mounting device, the blade tip portion is worn and the length of the tilling pawl is increased. It was abandoned when it became shorter and the ability to cultivate was lost.

[0003] In the prior art, Japanese Utility Model Publication No. 50-10324 discloses a conventional one in which the mounting position of the plowing pawl is changed by providing a polygonal hole so as to secure the plowing depth of the one-way pawl.

[0004]

[Problems to be solved by the device]

 However, in the conventionally known one, the tilling claw itself is a one-way claw, and the position changing mechanism is a complicated one of a continuous polygon type. Therefore, this conventional one has a problem that it cannot be easily applied to a forward / reverse bidirectional claw, which has a short service life because it is bidirectional and has a short service life and becomes uneconomical when discarded.

The present invention has been made in view of the above-mentioned problems of the prior art. The purpose of the present invention is to provide an economical forward / reverse bidirectional plowing claw that has a simple structure and can extend the service life. To provide a mounting device.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a device for attaching both forward and reverse tilling pawls to a holder radially fixed to a tilling shaft by taking the following technical means. Provide at least two rows of continuous or intermittent holes in the lengthwise direction of the tiller near either end on either the holder or the tiller, and on the other side the number corresponding to the number of rows in the widthwise direction of the tiller. The bolt through hole is provided, and the nut is screwed to the bolt inserted through the hole and the through hole, and the tilling claw is attached to the holder so as to be able to be fed out.

[0007]

[Action]

 If the plowing pawl is worn by using forward and reverse rotation, loosen the nut, unscrew the plowing pawl and re-use it.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 and 2 show a first embodiment of the present invention.

On the outer peripheral surface of the tiller shaft 1 connected to the gear case (not shown) of the tiller, a large number of holders 3 (one in the drawing is shown and the others are omitted) are arranged to be radial when viewed from the side. They are fixed to each other at appropriate intervals by means such as welding. An integral bolt through hole 5 is formed in the holder 3.

The tilling claw 7 detachably attached to the holder 3 is for both forward and reverse directions and is composed of a blade body portion 9 and a mounting portion 11 connected to the blade body portion 9. A bolt through hole 13 that matches the bolt through hole 5 of the holder 3 is formed in the hole 11. The bolt through hole 13 is formed as a long hole in the length direction of the tilling claw 7.

Then, the mounting portion 11 of the tilling claw 7 is engaged with the holder 3, and the bolt 15 is inserted into the bolt through hole 5 of the holder 3 and the bolt through hole 13 of the mounting portion 11 of the tilling claw 7, and the nut 15 is inserted into this. The mounting portion 11 of the tilling claw 7 is detachably fixed to the holder 3 by being screwed onto the holder 17.

The operation of the above structure will be described. When the mounting portion 11 of the new tilling claw 7 is mounted on the holder 3, the blade tip 9 side of the bolt through hole 13 of the mounting portion 11 is attached to the bolt through hole of the holder 3. 5, the bolt 15 is inserted, the nut 17 is screwed onto the bolt 15, and the mounting portion 11 of the plowing pawl 7 is fixed to the holder 3, whereby the plowing pawl 7 is attached to the holder 3 with the turning radius R.

When the forward and reverse plowing work is performed, the plowing claws 7 that rotate at the turning radius R and the turning radius R plow. By repeating this soil tillage, the blade portion 9 of the tilling claw 7 is worn, and the length of the tilling claw 7 becomes short. For this reason, the turning radius R of the tilling claw 7 becomes small and the tilling ability becomes small. At this time, after loosening the nut 17, the mounting portion 11 of the plowing pawl 7 to the holder 3 is extended in the length direction of the plowing pawl 7 by an amount corresponding to the wear amount of the blade body 9, and the nut 17 is screwed again. By attaching the fixing portion 11 of the tilling claw 7 to the holder 3, the tilling nail 7 is restored to the turning radius R. Therefore, the service life of the tiller 7 can be extended. In this embodiment, such a simple double-row through-hole 13 can be used for feeding and mounting the tilling claw.

In the above embodiment, the bolt through hole 13 provided in the mounting portion 11 of the tilling claw 7 is formed as an elongated hole, but conversely, the bolt through hole 5 on the holder 3 side may be formed as an elongated hole. The same effect can be obtained.

FIGS. 3 and 4 show a second embodiment of the present invention.

In this embodiment, a plurality of stages of bolt through holes 19 A, 19 B ... Are bored in the mounting portion 11 of the tilling claw 7 at appropriate intervals in the lengthwise direction of the tilling claw 7, while the holder 3 is provided at the holder 3. Bolt through holes 21 that selectively match the bolt through holes 19A, 19B, ... Are provided.

With this configuration, in this embodiment, when the mounting portion 11 of the new tilling claw 7 is mounted on the holder 3, the bolt through hole 19A of the mounting portion 11 is aligned with the bolt through hole 21 of the holder 3, The bolt 15 is inserted into the bolt through holes 19A and 21, and the nut 17 is screwed to the bolt 15 to fix the mounting portion 11 of the tilling pawl 7 to the holder 3 so that the tilling pawl 7 is attached at the turning radius R. ..

When the blade body 9 of the tilling claw 7 is worn and the tilling ability becomes small, the nut 17 is unscrewed to remove the bolt 15 from the bolt through holes 19A and 21, and then the holder 3 is removed. The mounting portion 11 of the tilling claw 7 and the tilling nail 7 are extended in the longitudinal direction so that the bolt through hole 19B of the attaching portion 11 of the tilling claw 7 is aligned with the bolt through hole 21 of the holder 3 and the above bolt through hole 19B. , 21 are inserted with bolts 15, and nuts 17 are screwed to the holders 3, and the mounting portions 11 of the plowing pawls are fixed to the holder 3, whereby the plowing pawls 7 are restored to the turning radius R.

In the above embodiment, a plurality of stages of bolt through holes 19A, 19B and holes 21 are formed in the mounting portion 11 of the tilling claw 7 in a plurality of stages at appropriate intervals in the length direction of the tilling claw 7. However, the same effect can be obtained.

5 to 7 show a third embodiment of the present invention.

In this embodiment, a plurality of circular bolt through holes 23 A, 23 B ... Which communicate with each other are attached to the mounting portion 11 of the tilling pawl 7 so as to communicate with each other in the lengthwise direction of the tilling pawl 7. On the other hand, the holder 3 is provided with a bolt through hole 25 that selectively matches the bolt through holes 23A, 23B, .... A part 29a of the support shaft 29 of the bolt 27 is formed in a substantially drum shape and has a long diameter substantially the same as the diameter of the bolt through holes 23A, 23B ... And a short diameter connects the bolt through holes 23A, 23B. The diameter is slightly smaller than the part. 30 is a spring.

With the above-described configuration, in this embodiment, when the mounting portion 11 of the new tilling claw 7 is mounted on the holder 3, the bolt through hole 23 A of the mounting portion 11 is aligned with the bolt through hole 25 of the holder 3, The bolt 27 is inserted into the bolt through holes 23A and 25, the bolt 27 is positioned such that the major axis is along the length direction of the tilling pawl 7, and the nut 17 is screwed through the spring 30 so that the holder 3 is provided with the tilling pawl 7. By fixing the mounting portion 11 of the plowing claw 7, the plowing claw 7 is mounted with the turning radius R. At this time, the substantially drum-shaped part 29a of the bolt 27 is located on the bolt through hole 25 side.

When the blade body 9 of the tilling claw 7 is worn and the tilling ability is reduced, the bolt 27 is pulled rightward in FIG. 6 against the spring 25, and a part 29a of the bolt 27 (see FIG. 7) is located on the bolt through hole 23A side. After that, the attachment part 11 of the tilling claw 7 to the holder 3 is extended in the length direction of the tilling claw 7, the bolt through hole 23B of the attaching part 11 of the tilling claw 7 is aligned with the bolt through hole 25, and the bolt 27 is again attached. When released, the bolt 27 is returned by the spring 30. Therefore, since the bolt through hole 23B is fitted at the base of the support shaft 29 of the bolt 27, the mounting portion 11 of the plowing pawl 7 is fixed and the plowing pawl 7 can be restored to the turning radius R.

In the above embodiment, a plurality of communicating bolt through holes 23A, 23B, ... Are bored on the side of the mounting portion 11 of the tilling claw 7, but conversely, the bolt through hole 25 provided on the holder 23 side is provided. The same effect can be obtained by forming a plurality of communicating parts.

FIG. 8 shows a fourth embodiment of the present invention. In this embodiment, the holder 31 is formed into a curved surface having an appropriate radius of curvature, while the mounting portion 33 of the cultivating pawl 7 is attached to the holder 31. A curved surface having the same radius of curvature as that of the holder 31 is formed.

With the above configuration, in this embodiment, when the attachment portion 33 of the tilling claw 7 to the holder 31 is extended in the length direction of the tilling claw 7, it is also extended in the width direction of the tilling claw 7, so that the width H The length R is maintained and the tilling performance is improved.

In FIGS. 3 to 8, the same reference numerals as those in FIGS. 1 and 2 denote the same items.

[0029]

[Effects of the Invention] As described above, according to the configuration of the present invention, since the mounting portion for the holder can be extended through the double-row holes, even if the cutting edge is worn even though the structure is simple. The effect of being able to feed out the tiller, extending the service life of the tiller, and improving economic efficiency is obtained.

[Brief description of drawings]

FIG. 1 is a side view showing an apparatus for mounting a tilling claw according to a first embodiment of the present invention.

FIG. 2 is a front view showing a device for mounting a tilling claw according to a first embodiment of the present invention.

FIG. 3 is a side view showing a device for mounting a tilling claw according to a second embodiment of the present invention.

FIG. 4 is a front view showing a mounting device for a tillage claw according to a second embodiment of the present invention.

FIG. 5 is a side view showing a device for mounting a tilling claw according to a third embodiment of the present invention.

FIG. 6 is a front view showing a device for mounting a tilling claw according to a third embodiment of the present invention.

FIG. 7 is a perspective view of a bolt.

FIG. 8 is a front view showing a mounting device for a tillage claw according to a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Cultivating shaft 3 Holder 7 Cultivating claw 11 Mounting part

Claims (1)

[Scope of utility model registration request] 1. A device for mounting both forward and reverse cultivating claws on a holder radially fixed to a cultivating shaft, wherein at least one of the holder and the cultivating claw has a length of at least two rows of cultivating claws close to both ends. Direction continuous or intermittent holes are provided, and the other side is provided with a number of bolt through holes corresponding to the number of rows in the width direction of the tilling claw, and nuts are screwed onto the holes and the bolts inserted into the through holes. A mounting device for a tilling claw, wherein the tilling claw is attached to the holder so as to be able to be extended.