KR20150137348A - A bucket tooth of excavator - Google Patents

Abstract

The present invention relates to a bucket tooth for an excavator and, more specifically, to a bucket tooth for an excavator which improves cohesion between two parts and enables easy assembly and disassembly by improving a coupling structure between a tooth adapter for forming a tooth and a tooth point. To achieve this, the bucket tooth for an excavator according to the present invention comprises: a tooth adapter which has an adapter body, an insert protruding from the front end part of the adapter body, and a mounting part protruding from the rear end of the adapter body and fixed and coupled to a bucket of an excavator; a tooth point which has a point body for excavation and an open-type insert groove formed in the rear end part of the point body; and a connecting unit which couples the tooth adapter and the tooth point to each other.

Description

A BUCKET TOOTH OF EXCAVATOR

The present invention relates to a bucket tool for an excavator that improves the coupling structure between a toe adapter fixedly coupled to a bucket of an excavator and a toe point for excavation, The present invention relates to a toothed bucket for an excavator capable of increasing the binding force through a locking member having a structure that is caught by the toothed adapter by operation and assuring ease of assembling and separating.

As a technique relating to bucket insertion of an excavator,

Korean Patent Laid-Open No. 10-2006-0011366 (published on Mar. 23, 2006, hereinafter referred to as "prior art 1"), "bucket for excavator"

The prior art 1 includes a tooth adapter integrally formed with a mounting portion which is fixedly coupled to a bucket for an excavator by bolt welding or the like and integrally protruded to the outside of the bucket and an excavator which is coupled to the toe adapter, And a toothed point formed with one side open insert groove into which the insert part of the toe adapter is inserted, wherein a through hole through which the engagement pin is inserted into the insert part of the toothed adapter passes through the upper and lower surfaces of the insert part And the insertion hole is formed vertically through the upper and lower surfaces of the toe point so as to coincide with the insertion hole of the toe adapter, The latching groove into which the snap ring is inserted is inserted into the insertion hole And a ring groove is formed in the coupling pin so that the snap ring embedded in the coupling groove of the tooth adapter is resiliently fitted and fixed when the coupling pin is inserted into the insertion hole of the fitting hole and the insertion hole of the to- .

Another technique is

Korean Patent Registration No. 10-0615524 (registered on Aug. 17, 2006, hereinafter referred to as "prior art 2"), "excavator bucket-to-

The prior art 2 includes a toe adapter fixedly coupled to a bucket of an excavator and integrally formed with an insert portion protruding outward from a tip end portion of the bucket in front of a mounting portion fixedly coupled to a bucket tip portion of the excavator, And a toothed point formed with a rear open insert groove into which a insert portion of the toothed adapter is inserted at the rear end by excavating the excavation surface, the bucket insert being formed to penetrate horizontally through the insert portion of the toothed adapter The tapered holes are formed to have different diameters at both ends and are formed to have inclined surfaces along the longitudinal direction on the inner peripheral edge. The tapered holes are formed on both sides of the toothed point so as to penetrate the tapered hole so as to connect with the shape of the tapered hole. Ball and hanging ball, And a tapered contact surface which is in contact with the tapered hole of the tooth adapter is formed on the outer periphery of the tapered contact surface in the longitudinal direction, A taper pin having a threaded hole formed at one end of the hollow portion and a threaded hole formed at an end of the threaded portion to be inserted into the threaded hole of the tapered pin through the coupling hole of the toothed point, And a locking bolt for fixing the taper pin inserted in the taper hole of the tapered hole.

The prior arts 1 and 2 are technologies applied to the present applicant. The present invention relates to a bucket adapter bucket which can improve the joining structure between the toothed adapter and the toot point, increase the binding force therebetween, And developed the dragon.

In the present invention, the insert of the tooth adapter and the insert groove of the tooth point are mutually male and female, the pin is inserted into the insert through the toothed point, and the stopper provided on the pin enters the recess provided in the toothed adapter And it is an object of the present invention to provide a buckling tool having a double locking structure by helical fastening and stopper engaging by mutually fastening the helical portion formed in the pin and the corresponding helical portion in the corresponding fitting portion formed in the insert of the tooth adapter.

According to an aspect of the present invention, there is provided a bucket for a bucket of an excavator,

An adapter body, an insert protruding from a front end of the adapter body, and a mounting portion protruding from a rear end of the adapter body and fixed to the bucket of the excavator;

A pointing point including a point body for excavation and a rear opening type insert groove into which an insert of the tooth adapter is inserted at a rear end of the point body; And

A connecting unit for fixedly coupling the tooth adapter and the tooth point;

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The connecting unit

An insertion portion formed to pass from an upper rear end of the point body of the tooth point to an insert groove,

A corresponding fitting portion formed on the upper side of the insert of the tooth adapter so as to be formed so as to correspond to the fitting portion,

A pin inserted into the fitting portion and the corresponding fitting portion; a helical portion formed on the outer peripheral surface of the lower end of the pin; a receiving portion formed on the helical portion so as to be recessed and formed; A locking member interposed between the accommodating portion and the stopper and including an elastic spring elastically acting on the stopper,

A corresponding spiral portion formed on the inner peripheral surface of the corresponding fitting portion and fastened to the spiral portion,

A recess formed in the corresponding fitting portion so as to be formed on the corresponding helical portion,

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When the pin of the locking member is inserted into the fitting portion, the stopper of the locking member is pressed by the inner peripheral surface of the fitting portion and the elastic spring is also pressed together by the pressed stopper,

And when the pin is rotated, the spiral part and the corresponding spiral part are fastened to each other, and when the stopper of the locking member is positioned in the recess, the resilient force of the elastic spring causes the recess to enter the recess .

The bucket tool of an excavator according to the present invention,

When the insert of the tooth adapter and the insert groove of the toothed point are mutually male and female, the pin is inserted into the insert through the toothed point, and when the pin is rotated, the threaded portion of the pin and the corresponding threaded portion of the toothed adapter are interlocked, At this time, since the stopper of the pin enters the recess of the tooth adapter and is engaged with the secondary lock, the mutual binding force between the tooth adapter and the tooth point is increased, and assembly and separation are facilitated.

1 is an exploded perspective view showing a bucket for a bucket of an excavator according to the present invention,
Fig. 2 is an exploded perspective view of Fig. 1 taken in the other direction,
FIG. 3 is a side cross-sectional three-dimensional configuration of a toe adapter in a bucket tool for an excavator according to the present invention,
Fig. 4 is an assembled three-dimensional configuration diagram of Fig. 1,
Fig. 5 is a three-dimensional configuration view showing that the tooth of the present invention is mounted on a bucket of an excavator. Fig.

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

Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

1, the direction of the toe point side is referred to as a front portion or the front side and the direction of the tooth adapter side is referred to as a rear portion or rear side. Further, on the basis of Fig. 1, Or the upper side, and the side of the spiral portion is the lower or the lower side.

As shown in Figs. 1 to 5, the bucket tool of an excavator according to the present invention,

And comprises a tooth adapter 10, a tooth point 20, and a connecting unit 30.

Looking at each configuration,

The tooth adapter 10

As shown in Figs. 1 to 4,

Is coupled to the bucket of the excavator with the toothed point (20) connected for excavation,

The rectangular adapter body 11,

An insert 12 protruding from a front end of the adapter body 11,

A mounting portion 13 protruding from the rear end of the adapter body 11 and fixedly coupled to the bucket of the excavator,

.

Here, the insert 12 has a smaller cross-sectional shape as it goes forward, that is, a pointed shape as it goes forward.

The mounting portion 13 is composed of two powder pieces that are connected to the upper and lower ends of the rear end portion of the adapter body 11 and extend rearward and are vertically spaced apart from each other. In the state where the bucket end portion of the excavator is inserted between the two powder portions, Or the like.

The tooth point 20

As shown in Figs. 1 to 4,

And is connected to the tooth adapter 10 for excavating an excavated surface,

Point body 21, and

A rear open (insert) type insert groove 22 into which the insert 12 of the tooth adapter 10 is inserted is formed at the rear end of the point body 21,

.

Here, the point body 21 has a smaller cross-sectional shape as it goes forward, that is, a pointed shape as it goes forward.

And the insert groove 22 has an inner space shape corresponding to the insert 12.

The connecting unit 30

As shown in Figs. 1 to 3,

For coupling the tooth adapter (10) and the tooth point (20) to each other,

A fitting portion 31 formed to pass from the rear end of the point body 21 of the tooth point 20 to the insert groove 22,

A corresponding fitting portion 32 formed on the insert 12 of the tooth adapter 10 so as to correspond to the fitting portion 31,

A locking member 33 fitted to the fitting portion 31 and the corresponding fitting portion 32,

A corresponding spiral portion 34 formed on the inner peripheral surface of the corresponding fitting portion 32 to be engaged with a spiral portion 332 to be described later,

A recess 35 formed in the corresponding fitting portion 32 so as to be recessed on the corresponding helical portion 34,

.

Here, as in "A" of FIGS. 2 and 2, the fitting portion 31 and the corresponding fitting portion 32 are circular when viewed from above.

As in Figures 1 and 2, the locking member 33

A pin 331 inserted into the fitting portion 31 and the corresponding fitting portion 32,

A spiral portion 332 formed on the outer peripheral surface of the lower end of the pin 331,

A receiving portion 333 formed on the pin 331 so as to be formed on the spiral portion 332,

A stopper 334 arranged in the accommodating portion 333,

An elastic spring 335 which intervenes between the accommodating portion 333 and the stopper 334 and elastically expands toward the stopper 334,

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At this time, a recessed space may be formed at the bottom of the accommodating portion 333 so that the end of the elastic spring 335 can be inserted and supported.

The stopper 334 has a semicircle-shaped protruding and depressed portion 334a and a protruding portion 334b protruding from the side surface of the protruding and recessed portion 334a, And a support 334b in which the support member 335 is fitted,

A rounded portion 334c is further formed at the lower end of the protruding and recessed portion 334a so that the protruded and depressed portion 334a can be easily entered into the guide 36 do.

The protrusion 334a of the stopper 334 has a rectangular shape as viewed from the side and the rounded portion 334c has a semicircular shape convex downward.

It is preferable that the recess 35 has a space size in which the protruding and recessed portion 334a of the stopper 334 can enter and is located. More preferably, the outer shape of the stopper 334, And has a space size corresponding to the shape of the round portion 334a and the round portion 334c.

As a result, the stopper 334 has a structure that is non-rotated within the accommodating portion 333 and the recess 35.

The connecting unit 30 is configured to facilitate positioning of the locking member 33 with respect to the stopper 334 when the pin 331 of the locking member 33 is inserted into the fitting portion 31 The apparatus further includes a guide 36 and a corresponding guide 37,

As in "A" in Figure 2,

And is formed to penetrate from the upper side of the rear end of the point body 21 of the tooth point 20 to the insert groove 22 so as to communicate with the fitting portion 31 in a neighboring manner.

As a result, when viewed from above, the circular fitting portion 31 and the circular guide 36 are adjacent to each other in a mutually intersecting manner.

Therefore, when the pin 331 of the locking member 33 is inserted into the fitting portion 31, the locking member 33 can be positioned with respect to the stopper 334, (36) and inserted into the fitting portion (31).

As in Figure 3, the corresponding guide (37)

And is formed downwardly corresponding to the guide 36 on the upper end of the outer peripheral surface of the corresponding fitting portion 32.

The stopper 334 of the locking member 33 is guided by the guide 36 to be inserted into the fitting portion 31 and guided by the corresponding guide 37 to the entrance of the corresponding fitting portion 32 .

When the stopper 334 of the locking member 33 enters the recess 35, the pin 331 is concealed by the fitting portion 31, and when viewed from the side, 331 are not visible.

In addition, a tool insertion groove 331a is formed in the upper surface of the pin 331 so that a tool such as a hexagon can be inserted.

The bucket tooth of the excavator according to the present invention having the above-

The stopper 334 of the locking member 33 is guided by the guide 36 and inserted into the fitting portion 31 when the pin 331 of the locking member 33 is inserted into the fitting portion 31 At this time, the stopper 334 is pressed by the guide 36 and the elastic spring 335 is also pressed together by the pressurized stopper 334,

The spiral portion 332 and the corresponding spiral portion 34 are engaged with each other when the locking member 33 rotates the pin 331 or when the tool is inserted into the tool insertion groove 331a. When the stopper 334 of the locking member 33 is inserted into the recess 35 while being inserted into the corresponding fitting portion 32 by the restoring force of the elastic spring 335, The mutual assembly between the tooth adapter 10 and the tooth point 20 is performed.

While the present invention has been described with reference to the accompanying drawings, it should be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims. And should be construed as falling within the scope of protection of the present invention.

10: Toe adapter
11: Adapter body 12: Insert
13:
20: Tooth point
21: point body 22: insert groove
30: connecting unit
31: fitting portion 32: corresponding fitting portion
33: locking member 331: pin
331a: tool insertion groove 332:
333: receiving portion 334: stopper
334a: an appearance-and-appearance unit 334b: support
334c: Rounding part 335: Elastic spring
34: corresponding spiral part 35: recess
36: Guide 37: Response Guide

Claims (6)

An adapter body 11, an insert 12 protruding from a front end portion of the adapter body 11, and an insert 12 formed to protrude from a rear end portion of the adapter body 11, (10) including a mounting portion (13) fixedly coupled to the mounting portion (10);
A point body 21 for excavation and a rear insert opening 22 into which the insert 12 of the tooth adapter 10 is inserted at the rear end of the point body 21 20); And
A connecting unit (30) for fixedly connecting the tooth adapter (10) and the tooth point (20) to each other;
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The connecting unit (30)
A fitting portion 31 formed to pass from the rear end of the point body 21 of the tooth point 20 to the insert groove 22,
A corresponding fitting portion 32 formed on the insert 12 of the tooth adapter 10 so as to correspond to the fitting portion 31,
A pin 331 inserted into the fitting portion 31 and the corresponding fitting portion 32; a spiral portion 332 formed on the outer peripheral surface of the lower end of the pin 331; A stopper 334 arranged in the accommodating portion 333 and a stopper 334 interposed between the accommodating portion 333 and the stopper 334 so as to be engaged with the stopper 334, A locking member 33 including an elastic spring 335 that exerts an elastic force toward the elastic member 334,
A corresponding spiral portion 34 formed on the inner circumferential surface of the corresponding fitting portion 32 and fastened to the spiral portion 332,
A recess 35 formed in the corresponding fitting portion 32 so as to be recessed on the corresponding helical portion 34,
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When the pin 331 of the locking member 33 is inserted into the fitting portion 31 the stopper 334 of the locking member 33 is pressed by the inner circumferential surface of the fitting portion 31, The elastic spring 335 is also pressed together,
When the pin 331 of the locking member 33 is rotated, the spiral portion 332 and the corresponding spiral portion 34 are engaged with each other so that the stopper 334 of the locking member 33 is engaged with the recess 35, The resilient force of the resilient spring (335) causes the recess (35) to enter the recess (35).
The method according to claim 1,
The stopper 334 of the locking member 33 has a semicircular protruding portion 334a and a protruding portion 334b protruding from the side surface of the protruding portion 334a, And a support (334b) in which the buckets (331, 335) are inserted.
3. The method of claim 2,
The connecting unit 30 is inserted into the insert groove 22 from above the rear end of the point body 21 of the tooth point 20 so as to communicate with the fitting portion 31, 36,
Wherein a stopper (334) of the locking member (33) is inserted along the guide (36) when the pin (331) of the locking member (33) is inserted into the fitting portion (31) Tooth.
The method of claim 3,
Wherein the connecting unit (30) further comprises a corresponding guide (37) formed on an upper end of an outer circumferential surface of the corresponding fitting portion (32) so as to correspond to the guide (36).
5. The method of claim 4,
The protrusion 334a of the stopper 334 of the locking member 33 is provided with a rounding portion 334a at the lower end of the protrusion 334a so that the protrusion 334a can be easily entered into the guide 36. [ (334c) is further formed in the bottom surface of the bucket.
6. The method according to any one of claims 1 to 5,
The pin 331 is hidden in the fitting portion 31 while the stopper 334 of the locking member 33 enters the recess 35 and the tool 331 is inserted into the upper surface of the pin 331, And a groove (331a) is formed in the groove (331a).

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