JPH0349155Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an excavation corner member that connects the opening-side edge members of an excavation attachment such as a bucket of a power shovel. This invention relates to an excavation corner member which is welded to the excavation corner and allows a side cutter to be detachably attached to the excavation corner.

[Problem that the invention attempts to solve]

Conventionally, excavation attachments such as buckets that are attached to the arm of an earth-moving machine are transported as a completed product that can be directly connected to the arm of the earth-moving machine itself. By the way, this type of article has a complicated shape and curved portions, so it is bulky relative to its weight, and transportation costs are high. In order to solve this problem, the present inventor developed a method in which each component of the bucket is transported as a semi-finished product before welding, and then welded into a finished product at the destination.

The problem in this case is that skill is required to weld the main connecting parts of the bucket, especially the corners of the excavation edges, which bear the most load, making it difficult to obtain the strength and dimensions as designed, and also resulting in variations in quality in the finished product. It was something that could easily happen.

The present invention was devised to solve this problem, and by using an excavation corner member at the corner of the excavation edge of the bucket to connect the side plate of the bucket main body and the edge member of the bottom plate in a predetermined position relationship, it is possible to solve the problem. Easily and strengthens welding of excavated corners,
The purpose is to eliminate variations in quality.

[Means to solve problems]

For the above purpose, the present invention provides an excavation corner member for connecting the lower edge member of the bottom plate and the edge member of the side plate in a predetermined positional relationship at the corner of the excavation edge of the bucket. It is equipped with a removable side cutter that protrudes toward the user.

[Example of idea]

Next, embodiments of the present invention will be described based on the drawings.

In the figure, reference numeral 1 indicates a bucket tote used for earth-moving machines such as power shovels. Generally, this type of bucket tot 1 has side plates 3 connected to both left and right sides of a bottom plate 2 which is curved at the rear. A stay 4 for connection to a machine body arm (not shown) is integrally provided.

5 is a bottom plate edge member 2a of this type of bucket 1.
This is an excavation corner member of the present invention used for joining the side plate edge 3a.

As shown in FIGS. 2 and 3, the corner member 5 has a bucket bottom plate edge member 2 on the inside of the lower part of the main body.
It has an engagement recess 6 for coupling with the side edge of the bucket a, and has the bucket side plate edge member 3 on the upper part.
It has an engaging recess 7 for coupling a. These engagement recesses 6, 7 preferably have stepped portions on both vertical and horizontal sides so as to come into contact with the mating members 2a, 3a, and in particular, the engagement recesses 6, 7 have stepped portions so as to come into contact with the mating members 2a, 3a on both the vertical and horizontal sides, and in particular, the engagement recesses 6, 7 have stepped portions so as to come into contact with the mating members 2a, 3a on both vertical and horizontal sides. The recess 6 is a stepped portion and the edge member 2a
Support it and prevent it from opening downward.

8 is a side cutter attached to the corner member 5 so as to protrude toward the front of the bucket opening.

In the illustrated embodiment, an insertion hole 9 for fitting the side cutter 8 is formed in the wall thickness of the corner member 5, and the base of the side cutter 8 is inserted into this insertion hole 9, and it can be attached or removed using a fixing device 10 such as a bolt. freely combined.

The insertion hole 9 may be formed as a through hole passing through the width of the corner member 5, or may be formed as a bottomed slot so that the rear end of the side cutter 8 comes into contact with the bottom of the hole. In the latter case, since the cutter 8 is locked to the bottom of the bottomed hole, there is an advantage that an unreasonable shearing load is not applied to the connecting bolt. Therefore, the bolt only needs to be small enough to prevent the cutter from coming off. Of course, in this case, in order to remove obstacles such as dirt that accumulate at the bottom of the insertion hole 9, it is better to provide an opening (not shown) in the side surface of the corner member 5 along the bottom of the insertion hole 9. desirable.

Next, the operation of the present invention will be explained. The excavation corner member of the present invention is particularly convenient for shipping a bucket as a semi-finished product in its component parts and assembling the parts into a finished product by welding at the destination. Of course, the advantage in this case is that a large number of buckets can be transported at once by separating the buckets into a load with less space.

In this way, each component is welded and assembled at the destination, and the corner member of the present invention is used as a connecting member at the corner of the excavation where the strongest force is applied. That is, the bottom plate edge member 2a of the bucket
is engaged with the lower recess 6 of the corner member 5 to weld the periphery, and the upper recess 7 of the corner member
The side plate edge member 3a of the bucket is engaged and welded. The side cutter 8 is fitted into the cutter insertion hole 9 of the corner member 5 and fixed with bolts or the like to complete the bucket.

[Effect of idea]

As described above, according to the present invention, the edge members of the bottom plate and side plate of the bucket can be welded by contacting the engaging recesses of the corner members, making welding work at the corner of the excavation opening easier and at the same time significantly increasing the strength. Improved welding quality and eliminates welding defects. This is extremely useful for transportation systems in which buckets are transported in pieces and then assembled at the destination.

Furthermore, since a corner member separate from the bottom plate and side plates is used at the excavation corner where wear and tear is most severe, wear at the corner can be effectively prevented. Moreover, since the corner member is equipped with a side cutter, easy excavation can be performed. In particular, when the cutter is supported in the insertion hole of the corner member, the cutter is supported by the frame of the corner member itself, so there is no risk of damaging the bolt even if excessive force is applied to the cutter from any direction.

[Brief explanation of the drawing]

FIG. 1 is a side view of a bucket using the excavation corner member of the present invention, FIG. 2 is a front view of the same main part, and FIG. 3 is an exploded explanatory view of the excavation corner member. 1...Bucket, 2...Bottom plate, 3...Side plate, 5
... Excavation corner member, 6 ... Bottom plate edge engagement recess, 7 ... Side plate edge engagement recess, 8 ... Side cutter, 9 ... Cutter insertion hole.

Claims (1)

[Claims for Utility Model Registration] (1) A corner member for connecting excavation edge members of a bucket for earthmoving machines, which has an engaging recess 6 on the lower inner surface of the member body for supporting a bottom plate edge member 2a of the bucket. This corner member of a bucket for earthworks is provided with a side cutter 8 which is formed on the upper part of the member main body and which connects a side plate edge member 3a of the bucket to the member main body. (2) Forming an insertion hole 9 in the main body of the corner member 5,
A corner member of a bucket bag according to claim 1, wherein the base of a side cutter 8 is fitted into the insertion hole 9.