JPH0988111A - Civil-engineering bucket attachment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the body of a bucket from being worn, to facilitate the mending of an worn part of the bucket and to repair the bucket at a job site by fixing a liner composed of a plurality of parts, to the entire or a part of an excavating abrasion surface of the bucket with the use of removable bolts or the like. SOLUTION: A liner 8 composed of a plurality of parts are removably fixed to a bucket body 2 over the entire surface of a bottom panel by means of bolts 9 and along a reinforcing edge frame of a side panel of the bucket body 2, and is projected from the front end of an excavating edge 3. Further, the liners 8 are fixed to the front and rear surfaces of the body 2 in a sandwich-like manner. As necessary, a liner 8 is removably attached to an excavating edge 10 of the side panel. At this stage, the front end of the liner 8 is formed in a knife edge shape. With this arrangement, the bucket is excellent in wear- resistance, and it is possible to remarkably reduce the labor and the cost of the maintenance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket attachment mounted on an arm of an earthmoving machine for excavating earth and sand.

[0002]

A bucket attachment or the like, which is attached to the arm tip of an earthmoving machine such as a power shovel for excavating earth and sand, is abraded by strong friction with earth and sand at the time of excavation and has a relatively short period of time. Repair is needed. In this case, conventionally, the circumference was largely cut out around the worn portion, and a new steel plate shaped according to the size was welded to replace and repair.

For this reason, it is necessary to cut off a worn portion, shape a new steel plate having a size corresponding to the cut portion, and perform a welding operation, which requires a lot of labor and cost for maintenance. Moreover, this kind of repair work is a cutting machine,
Since a welding machine is required, it must be brought back to a repair shop or the like, and including transportation for that purpose caused a great loss in terms of both cost and construction period.

Therefore, the present invention is to provide a bucket attachment which can easily repair a worn portion and can be easily repaired at an excavation work site.

[0005]

In order to achieve the above object, the excavation bucket attachment of the present invention has a liner divided into a plurality of parts on all or part of the bucket excavation friction surface by means of a detachable attachment means. It is characterized by being fixed.

[0006]

In the present invention, since the liner (covering metal) is attached to the friction surface of the bucket body, the plate of the bucket body is not affected even if it is worn, and the liner is fixed by detachable attachment means such as bolts. The repair work is completed simply by removing the liner of the worn part and replacing the liner of the same size prepared in advance. Therefore, cutting of worn parts, production of repair plates, and welding are not required, and repair work can be performed on site.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a side surface of an excavation bucket attachment showing an embodiment of the present invention, and FIG. 2 shows a part of the back surface of the bucket attachment. The excavation claws 4 are detachably fixed to the lower tip edge 3 at a predetermined interval, and the stay 5 for connecting to an arm (not shown) of the earthworking machine body is integrally formed on the upper portion of the bucket body 2 by welding or the like. It is fixed, the front side mounting hole 6 of the stay 5 is axially attached to the mounting hole at the tip of the arm, and the rear mounting hole 7 is linked (not shown) with a rod (not shown) of a hydraulic cylinder of the earthworking machine body. It is used by pivoting on.

According to the present invention, in the earthworking excavation bucket attachment 1 as described above, the liner 8 divided into a plurality of parts on the friction surface of the bucket body 2 with the earth and sand is attached and detached by the detachable attachment means such as the bolt 9. As shown in FIG. 1, the side surface of the bucket body 2 is a portion where wear is particularly great due to friction with soil, that is, the reinforcing edge of the side plate of the bucket body 2 in FIG. A plurality of liners 8 which are separated along the frame are detachably fixed by bolts 9.

The back plate (bottom plate) 2'of the bucket body 2
Since, when excavating earth and sand, it receives substantially uniform friction, a liner 8 divided into a plurality of parts is detachably fixed with bolts 9 over the entire surface of the back plate 2 ', as shown in FIG.

Further, as shown in FIG. 3, a plurality of liners 8 are detachably fixed to the excavation edge 3 of the bucket body 2 by bolts 9 so as to avoid the mounting portion of the claw 4. The liner 8 of the excavation edge 3 is preferably arranged with its tip protruding from the tip of the edge 3, as shown in FIG.

Generally, in ordinary earth and sand excavation, the bucket body 2
The outer surface is more likely to wear. Therefore, the liner 8 may be attached only to the surface of the bucket body 2 that is more easily worn, but preferably, as shown in FIG. 4, the plate surface is sandwiched between the plate surfaces of the bucket body 2. Fix in a sandwich. In particular, the excavation edge 3 of the bucket body 2 receives the same friction on both sides, so it is desirable to fix the liner 8 in a sandwich shape on both sides of the edge 3 as shown in FIG.

The liner 8 attached to the plate surface of the bucket body 2 is preferably formed into a pre-defined rectangular or trapezoidal steel plate as shown.

Further, as shown in FIG. 1, the liner 8 may be detachably fixed to the excavation edge 10 of the side plate of the bucket body 2 by the bolt 9 as required. In this case, the liner 8 of the side plate excavation edge 10 is preferably formed in a blade shape with a sharp tip. This not only prevents wear on the digging edge, but also improves digging efficiency.

The material of the liner 8 attached to the bucket body 2 is preferably a wear-resistant steel material such as Swedish steel.

[0015]

As described above, according to the present invention, since the liner is stretched at the portion where the bucket body is easily worn, the bucket body is excellent in wear resistance and the bucket body is not damaged even if the liner is worn. Further, since the steel plate itself of the bucket body is not subjected to friction, it is not always necessary to use expensive wear-resistant steel as its material.

Since the liner is fixed in a replaceable manner by the detachable mounting means, the repair is completed simply by removing the liner of the worn portion and replacing it with a new liner. Therefore, the cutting and welding of the repaired part as in the past is not required, so the repair work is extremely easy, and since no cutting machine or welding machine is used, repairs can be performed at the excavation work site, and the maintenance labor And the cost is significantly reduced.

Since the liner is divided into a large number of parts, only the worn parts need to be replaced. Therefore, unlike the conventional case, the steel material is not wasted due to cutting over a wide range. Furthermore, conventionally, since the steel plate for repair was shaped according to the shape of the worn portion, the yield was poor and the steel material was wasted a lot, but the present invention can be used by cutting the liner in advance into a rectangular prescribed dimension. Therefore, it is economical to use materials without waste.

[Brief description of drawings]

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

FIG. 2 is a partial rear view of an excavation bucket attachment according to the present invention.

FIG. 3 is a portion of a digging edge of a digging bucket attachment according to the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

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

[Explanation of symbols]

1 ... Bucket attachment, 2 ... Bucket body,
3 ... excavation edge, 4 ... excavation claw, 5 ... stay, 6,
7 ... Mounting hole, 8 ... Liner, 9 ... Bolt, 10 ... Excavation edge.

Claims (2)

[Claims] 1. A bucket attachment for earthwork, wherein a liner divided into a plurality of parts is fixed to all or part of a bucket excavating friction surface by a detachable attachment means. 2. The bucket attachment for earthwork according to claim 1, wherein liners are fixed in a sandwich shape on both front and back sides of the bucket excavating friction plate surface by detachable attachment means.