JP2561519Y2 - Drilling machine claw mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a claw mounting structure for detachably connecting a claw member to a digging edge of an excavating machine such as a digging bucket for a power shovel, and more particularly to a claw body fixed to a plurality of adapters fixed along the digging edge. The present invention relates to a claw mounting structure for detachably connecting the hooks.

[0002]

As means for detachably attaching a claw member to an excavating edge of an excavating machine such as an excavating bucket, a claw main body is fitted to each of a plurality of adapters welded along the excavating edge, and the adapter and the adapter are connected to each other. 2. Description of the Related Art It has been practiced to insert a pin into a pin hole penetrating between claw bodies to engage both members.

In this case, conventionally, a vertical pin hole is provided between the adapter fitted inside and outside and the claw body, and the pin is inserted vertically into the pin hole. However, because the pin hole is vertical, the pin is likely to come off during the work due to the vibration during excavation work and the weight of the pin, and the claw body often falls off and the middle stage of the work is forced, and the pin and claw body are lost There were inconveniences such as doing.

[0004] This problem can be solved by forming the pin holes in the horizontal direction. However, since a plurality of claw members are generally provided at a narrow interval along the excavation edge, if the pin holes are horizontal, an intermediate portion is formed. When it is desired to replace the nail body, the adjacent nail member interferes and the pin cannot be attached or detached.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a claw mounting structure in which a connecting pin between an adapter and a claw member is hardly disengaged and any one of a plurality of claw members can be detached easily and independently.

Another object of the present invention is to provide a pawl mounting structure which enables the position of mounting around the axis with respect to the adapter to be changed, and in which the above-mentioned connection can be obtained at an arbitrary changed position.

[0007]

In order to achieve the above-mentioned main object, a feature of the present invention is that a plurality of adapters are fixed along a digging edge of an excavating machine, and a claw body is detachably attached to each adapter. In the claw mounting structure, a pin hole that crosses obliquely from the upper right to the lower left or from the upper left to the lower right is penetrated between the fitting shaft portions of the adapter and the claw body. The pin is inserted obliquely so that the nail body is engaged with the adapter.

Another object of the present invention is to form the adapter and the claw body so that the mounting angle of the adapter and the claw body around each other is variable, and at least one of the adapter and the claw member fitted inside and outside is provided with: This is achieved by forming a plurality of pinholes corresponding to the inclined pinholes of the other member corresponding to the change in the angle around the axis.

[0009]

Since the pin hole for engaging the adapter and the claw body is formed in an inclined shape, both ends of the pin hole are opened in a direction away from the adjacent claw member. For this reason, the pin inserted into the pin hole is hard to fall off, and the adjacent claw member does not hinder the pin when the pin is removed.

The inclined pin hole is always secured between the adapter and the claw body, even if the position of the claw body around the axis is changed with respect to the adapter.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A claw member 1 comprises an adapter 2 fixed to a digging edge such as a bucket, a claw body 3 mounted on the adapter 2, and a pin 4 for detachably connecting the adapter 2 and the claw body 3. It is configured.

The adapter 2 has a bifurcated fixed base 4 at its base end, and is welded to the bucket with the bucket excavation edge 6 interposed between the bifurcated members of the fixed base 5 as shown in FIG. It has become. A convex engaging portion 7 for fitting the claw body 3 inside and outside is integrally provided at a distal end portion of the adapter 2.

On the other hand, the claw body 3 is formed of a cylindrical body having an excavating blade 8 at the distal end, and a concave engaging portion 9 for receiving the convex engaging portion 6 of the adapter is formed at a base axial center portion. The convex engaging portion 7 of the adapter 2 is fitted with the concave engaging portion 9 of the claw main body 3 to constitute the claw member 1 as shown in FIGS.

The feature of the present invention in this type of claw member 1 is that it is inclined from the upper right to the lower left or from the upper left to the lower right between the fitting shaft portions (7, 9) of the adapter 2 and the claw body 3. The pin holes 10 and 11 are formed so as to cross each other, and the pins 4 are obliquely inserted into the pin holes 10 and 11 to engage the claw member 3 with the adapter 2.

For this reason, as shown in FIGS. 1, 3 and 4, an inclined pin hole 10 is formed in the convex engaging portion 7 of the adapter 2 and, as shown in FIGS. As shown, at least one pair of opposing pin holes 11 are formed in the concave engaging portion 9 of the claw body 3 so as to match both ends of the pin hole 10 of the adapter 2 when the adapter 2 is mounted. Thus, the adapter 2 and the concave and convex engaging portions 8 and 9 of the claw body 3 are fitted so that both ends of the pin hole 10 of the adapter 2 and the pair of pin holes 11 and 11 of the claw body 3 are aligned or communicate with each other. The claw body 3 is integrally connected to the adapter 2 by inserting the pin 4 into the corresponding pin holes 10, 11, 11. The pin 4 can be pulled out of the pin holes 10 and 11 using a jig.

The inclination angle of the pin hole 10 passing through the shaft of the convex engagement portion 7 of the adapter 2 must be set appropriately so that an extension of the shaft of the pin hole 10 does not hit an adjacent claw member. , Generally at 45 ° to the horizontal, as shown in FIG.
It is desirable to form at an angle.

The convex engaging portion 7 of the adapter 2 and the claw body 3
Is preferably engaged with a polygonal or other non-rotatable shape. This is to prevent the rotation of the claw body 3 and to prevent an excessive shearing force from being applied to the pin 4.

Preferably, as shown in the embodiment shown in the figure, the convex engaging portion 7 of the adapter 2 and the concave engaging portion 9 of the claw body 3 corresponding thereto have a mounting angle around the axis of the claw body 3 with respect to the adapter 2. It is formed into a polygon (octagon in the figure) that can be changed. In this case, as shown in FIGS. 5 and 6, a plurality of pairs of opposing pin holes 11 are formed in the claw body 3 corresponding to the pin holes of the adapter in response to the change of the mounting angle around the axis. By configuring as described above, the angle of the blade 7 of the claw main body 3 with respect to the adapter 2 can be changed in various ways as shown in FIGS. 2 and 3, and the pin hole of the adapter 2 is always provided at the changed angle. Pin holes 11, 11 corresponding to 10
Is obtained.

Incidentally, the convex engaging portion 7 of the adapter 2 has a projection 12 at the tip as shown in FIG. In addition, a concave portion 13 is formed in the bottom of the concave engaging portion 9 of the claw body 3 (see FIGS. 5 and 6), in which the protrusion 12 of the convex engaging portion 7 is fitted. In this manner, the tip of the adapter 2 and the claw body 3 is
When the excavation is performed, the force indicated by the arrow X in FIG. 3 is applied to the excavation, so that pull-out resistance is generated, and the shearing force on the pin 4 is significantly reduced.

In the embodiment shown in the drawings, the case where the convex engaging portion 7 is provided on the adapter 2 and the concave engaging portion 9 is formed on the claw body 3 is illustrated. Alternatively, the adapter may be provided with a concave engagement portion and fitted inside and outside. In this case, it goes without saying that the pin hole 10 is formed on the claw member 3 side and the pin holes 11 and 11 corresponding to the pin hole 10 are formed on the adapter 2 side.

[0021]

According to the present invention, since the stopper pin for connecting the adapter and the claw body is engaged in an oblique direction, preferably at an angle of 45 ° with respect to the horizontal line, the adjacent claw member is obstructed when the pin is detached. In addition, spontaneous detachment of the pins is significantly reduced. Therefore, since only the required nails can be detached, the replacement of the nails becomes easy, and the nail body can be prevented from falling off from the adapter.

Even when the angle of rotation of the adapter and the claw body is changed, a pin is mounted obliquely at any position where a pair of pin holes corresponding to the inclined pin holes of the inner member appear on the outer member for each changed position. it can.

[0023]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a claw member according to the present invention;

FIG. 2a,

FIG. 2B is an assembly diagram of a claw member,

FIG. 3 is a side view of the adapter,

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a plan view of a nail main body,

6 is a sectional view taken along line BB of FIG.

[Description of sign]

2 ... Adapter, 3 ... Claw body, 4 ... Pin, 6 ... Convex engagement part, 9 ... Concave engagement part, 10, 11 ... Pin hole,
12 ... protrusion, 13 ... concave.

Claims (2)

(57) [Scope of request for utility model registration] 1. A claw mounting structure in which a plurality of adapters are fixed along an excavation edge of an excavator and a claw body is detachably mounted on the adapter. A pin hole that crosses obliquely from the upper right to the lower left or from the upper left to the lower right is penetrated, and the pin body is inserted into this pin hole at an angle to engage the claw body with the adapter. The claw body is formed so that the mounting angle around the axis is variable, and the inner and outer fitted adapter and claw member are
A claw mounting structure for an excavating machine, wherein at least one member has a plurality of pin holes corresponding to the inclined pin holes of the other member corresponding to the change of the angle around the axis. 2. An inclined pin hole is formed in a shaft portion of an adapter, and a hollow shaft portion of a claw body fitted to the outside of the adapter is provided with a hole corresponding to a change in an angle around the axis with respect to the adapter. 2. The nail mounting structure according to claim 1, wherein a plurality of pin holes are formed so as to correspond to the inclined pin holes of the adapter.