JPH0933U - Bucket structure - Google Patents

Abstract

(57) [Summary] [Purpose] The bottom surface of the side reinforcing plate of the bucket is projected downward from the bottom edge of the side plate to prevent abrasion of the corners of the bucket. Moreover, since the upper surface of the bucket is damaged when the bucket is placed on a concrete surface or a paved road surface, the above problem is eliminated, and a bucket structure having a body abrasion resistance at the corner of the bucket is provided. [Configuration] The side reinforcing plate is welded to the side plate so that the position of the curved lower end edge of the side reinforcing plate in the bucket is approximately the same height as the inner peripheral surface of the bottom plate in a side view. It was constructed by wear-resistant hardfacing welding along the corner where the edge and the lower end of the side plate are in contact with each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to the structure of a bucket mounted on construction machines such as hydraulic excavators and work vehicles.

[0002]

[Prior art]

 FIG. 3 is a partially cutaway side view of the prior art bucket 1. In the figure, 2 is a bottom plate of the bucket 1, 3 is a wear plate, 4 is a side plate, 5 is a side reinforcing plate, 6 is a base, 7 is a bracket, and 8 is a claw. FIG. 4 is a perspective view of a main part of the bucket 1. FIG. 5 is a cross-sectional view of essential parts of the bucket 1 as seen from AA in FIG. The construction of the bucket 1 is such that the wear plate 3 is welded to the outer peripheral surface of the bottom plate 2 having a curved side view, and the side plates 4 are welded to the left and right edges of the bottom plate 2, respectively. The side reinforcing plate 5 is welded along the curved shape of the lower side.

When a hydraulic excavator excavates with a bucket, the corner portion where the bottom plate and the side plate are usually welded is worn most quickly. Therefore, as shown in FIG. 5, the lower end edge a of the side reinforcing plate 5 is previously projected downward from the lower end edge b of the side plate 4 by a dimension l to form the bucket 1, and the useful life of the bucket is extended. . However, when the hydraulic excavator performs work in the initial stage when the lower end edge a of the side reinforcing plate 5 of the bucket 1 is less worn, the ground leveling surface has a ridge due to the side reinforcing plate 5 and the surface is finished neatly. There wasn't. Further, when the bucket 1 was placed on a concrete surface or a paved road surface, the upper surface thereof was damaged by the lower end edge of the side reinforcing plate 5, which was unsatisfactory.

[0004]

[Problems to be solved by the device]

 In the bucket 1, in order to prevent early wear of the corner portion where the bottom plate 2 and the side plate 4 are welded, the lower end edge a of the side reinforcing plate 5 is previously moved downward by a dimension l from the lower end edge b of the side plate 4. To form the bucket 1. For this reason, during the terrain finishing work of the hydraulic excavator, the side reinforcing plate 5 may make a dent and the finished surface may not be finished cleanly, or if the bucket 1 is placed on a concrete surface or a paved road, the upper surface of the surface will be side. This is because the lower edge of the reinforcing plate 5 was scratched and was unsatisfactory.

[0005]

[Means for Solving the Problems]

 According to the present invention, the side reinforcing plate is welded to the side plate so that the position of the curved lower end edge of the side reinforcing plate in the bucket is approximately the same height in a side view. It was constructed by wear-resistant hardfacing welding along the corners where and are in contact with each other.

[0006]

【Example】

 FIG. 1 is a side view of the bucket 9 of the present invention. In the figure, the same reference numerals are given to those using the same constituent elements as those in the conventional technology. 5'is a side reinforcing plate, and 10 is a hardened buildup portion. FIG. 2 is a cross-sectional view of essential parts of the bucket 9 as seen from the line BB of FIG. Next, the structure of the bucket 9 will be described with reference to FIGS. The side reinforcing plate 5 ′ is welded to the side plate 4 so that the position of the curved lower end edge 11 of the side reinforcing plate 5 ′ is approximately the same height as the inner peripheral surface c of the bottom surface 2 in a side view. The curved bottom edge 11 of 5 ′ and the lower end of the side plate 4 are formed by wear-resistant hardfacing welding along the corners where they are in contact with each other.

Next, the operation of the bucket 9 of the present invention will be described. Since the wear-resistant hardfacing was performed along the above-mentioned corners, the corners of the bucket 9 (the corners formed by the bottom plate 2 and the side plates 4) were able to be provided with considerably large wear resistance strength. Further, since the height position of the lower end of the hardened padding portion 10 is substantially flush with the lower end edge b of the side plate 4 and the lower surface of the wear plate 3, the curved lower end edge 11 of the side reinforcing plate 5 ′ has the lower end edge b of the side plate 4. It does not project further downward.

[0008]

[Effect of the invention]

 As described above, in the present invention, the side reinforcing plate is welded to the side plate so that the position of the curved lower end edge of the side reinforcing plate in the bucket is approximately the same height as the inner peripheral surface of the bottom plate in side view. It was constructed by wear-resistant hardfacing welding along the corner where the curved lower edge of the side reinforcing plate and the lower end of the side plate contact each other. As a result, the corners of the bucket (the corners formed by the bottom plate and the side plates) were able to have considerably high wear resistance. Further, since the height position of the lower end of the hardened overlay portion is substantially flush with the lower end edge of the side plate and the lower surface of the wafer plate, the curved lower end edge of the side reinforcing plate does not protrude below the lower end of the side plate. Therefore, in the bucket of the present invention, it is possible to improve the wear resistance of the corner portions of the bottom plate and the side plate and to finish the ground leveling finish neatly. Further, even when the bucket of the present invention is used on a concrete surface or a paved road surface, the upper surface thereof is not damaged.

[Brief description of drawings]

FIG. 1 is a side view of a bucket according to the present invention.

FIG. 2 is a cross-sectional view of a main part of the bucket as viewed from BB in FIG.

FIG. 3 is a partially cutaway side view of a prior art bucket.

FIG. 4 is a perspective view of a main part of the bucket in FIG. 3;

FIG. 5 is a sectional view of a principal part of the bucket as viewed from AA in FIG. 3;

[Explanation of symbols]

 1,9 bucket 2 bottom plate 3 wear plate 4 side plate 5,5 'side reinforcing plate 10 hardened overlay

[Procedure amendment]

[Submission date] March 23, 1992

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Explanation of sign

[Correction method] Change

[Correction contents]

[Explanation of Codes] 1,9 Bucket 2 Bottom plate 3 Wear plate 4 Side plate 5,5 'Side reinforcing plate 10 Hardfacing part

Claims (1)

[Utility model registration claims] 1. A wear plate is welded to an outer peripheral surface of a bottom plate having a curved shape in a side view, and side plates are welded to left and right end edges of the bottom plate, respectively. In the bucket where the reinforcing plate is welded, the side reinforcing plate is welded to the side plate so that the position of the curved lower edge of the side reinforcing plate is substantially the same as the inner circumferential surface of the bottom plate in side view, and the side reinforcing plate is welded. A bucket structure characterized by being constructed by hard wear-welding of wear resistance along a corner where a curved lower edge and a lower end of a side plate are in contact with each other.