JP3462533B2 - Method of welding reinforcement of machinery and equipment and reinforcement patch used in this method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for construction of excavating buckets, dismantling forks, general industrial machinery such as earthmoving machines, welding reinforcement method for preventing machine tool from wear, and this method. Welding reinforcement patch.

[0002]

2. Description of the Related Art Machinery, such as an earthworking excavation bucket, which is heavily consumed, is welded with a steel plate on its reinforcing surface as a measure against wear. In this case, conventionally, the dimensions of the reinforcing surface and the worn surface are taken, and the reinforcing plate having the corresponding size and shape is melt-cut, cooled and deburred, and then welded to the entire surface of the reinforcing surface.

[0003]

However, in the conventional reinforcing method, since the entire reinforcing surface and wear surface are welded by the reinforcing plate, reinforcing plates having different shapes must be formed each time, and fusing, cooling, It takes a lot of time for setup such as deburring, and the yield of the steel material at the time of melting and cutting the reinforcing plate is poor, which is uneconomical.

Therefore, the present inventor solves the above problem by welding a plurality of reinforcing patches made of metal pieces in a desired arrangement, instead of the conventional method of welding and reinforcing the front surface of the reinforcing surface of the attachment with an iron plate. Moreover, it was found that the purpose of abrasion resistance can be sufficiently achieved even by partial reinforcement with a reinforcement patch.

However, the reinforcing patch made of small metal pieces is mass-producible, small in size, light in weight, and easy to carry, but on the other hand, when the tip of the burner hits during welding, the position of the burner moves and the work becomes difficult. Faced with.

Therefore, a first object of the present invention is to provide a welding reinforcement method capable of reinforcing a reinforcing surface of a machine tool to an arbitrary wear resistance strength with a plurality of mass-produced reinforcing patches having a predetermined shape and size in advance. It is in.

A second object of the present invention is to provide a welding and reinforcing method capable of reinforcing the reinforcing surface of a machine tool with arbitrary wear resistance strength by the plurality of reinforcing patches which can be positioned by temporary fixing. .

A third object of the present invention is to provide a reinforcing patch suitable for carrying out the above welding and reinforcing method of the present invention.

[0009]

The welding reinforcement method of the present invention for achieving the above first object is a welding reinforcement patch of a plurality of metal pieces preliminarily formed into a predetermined shape on a desired reinforcement surface of a machine tool. Are welded in an arbitrary arrangement and density.

In order to achieve the above-mentioned second object, the welding reinforcement method of the present invention provides a welding reinforcement patch of a metal piece having an adherable adhesion means on a desired reinforcement surface of a machine or the like in an arbitrary arrangement. It is characterized in that the welding reinforcement patch is temporarily attached and then welded to a desired adjustment position.

Further, the reinforcing patch of the present invention which achieves the above third object is composed of a reinforcing metal piece mass-produced into a predetermined shape and size.

More preferably, the reinforcing patch of the present invention is
It is composed of a reinforcing metal piece mass-produced in a predetermined shape and size, and an adhesive material such as a double-sided tape which is applied to the joint surface of the metal piece. In this case, the adhesive may be separate from the metal piece, or may be previously applied to the bonding surface of the metal piece.

The material of the reinforcing metal strips of the reinforcing patch is preferably wear resistant steel such as Swedish steel known as HARDOX 400 ™.

[0014]

According to the first aspect of the present invention, the reinforcing surface of the machine tool is preliminarily mass-produced in advance, and the reinforcing patch having a predetermined shape and size is welded in an arbitrary arrangement and at a desired density so that a wear-resistant surface can be obtained as required. Reinforced.

According to the second aspect of the present invention, the reinforcing patch is temporarily attached to the reinforcing surface of the machine tool by an adhesive in a desired layout and fixed in position. Therefore, the reinforcing patch does not move during the welding operation, and there is no fear that the reinforcing patch will drop even when welding to an inclined surface or a vertical surface.

Since the position fixing of the reinforcing patch by adhesion is temporary attachment, the arrangement density and layout of the reinforcing patch can be freely changed and adjusted before the main welding.

A desired wear resistance is imparted to the reinforcing surface by welding the reinforcing patch laid out in a temporary manner to the reinforcing surface of the machine tools. Further, various wear resistant surfaces are formed by adjusting the welding density of the reinforcing patch and selecting the thickness of the reinforcing patch.

The reinforcing patch can be mass-produced into a predetermined shape and size in advance, and when an adhesive is applied to the joint surface, it can be temporarily attached to the reinforcing surface.

[0019]

EXAMPLE A welding reinforcement method according to the present invention has a predetermined shape,
A small metal piece mass-produced into a size is welded to a desired reinforcing surface of a machine tool at a desired arrangement or density.

[0020] A more preferable method of welding and reinforcing the present invention is to temporarily attach a welding reinforcing patch of a small metal piece having a detachable adhesive means to a desired reinforcing surface of machinery and equipment in a desired arrangement, and thereafter to carry out the reinforcement. It is characterized by welding the patch to a desired position.

1a to 1c show a reinforcing patch used in the welding and reinforcing method of the present invention.
The reinforcing patch 1 of c has a diameter of 20 to 50 and a thickness of 8 to 80 m.
It is made up of m small metal pieces and is mass-produced in advance into a predetermined shape and size. The reinforcing patch shown in FIG. 1a has no adhesive on the joint surface and is used in the reinforcing method of claim 1 of the present application.

FIGS. 1b and 1c show a reinforcing patch for use in the reinforcing method according to claim 2 of the present application. The reinforcing patch 1 of FIG. 1b is a reinforcing metal piece 1a formed into a predetermined shape and size, and It is composed of an adhesive material 1b applied to one surface of the metal piece 1a, that is, a bonding surface to a reinforcing surface of a mechanical device.
2 and 3, it can be detachably attached to the reinforcing surfaces 4 and 5 of the machine tool 3 temporarily.

The reinforcing patch 1 of FIG. 1c is also useful for carrying out the method of claim 2 of the present application. In this reinforcing patch 1, an adhesive material 1b such as a double-sided tape is pre-attached to a metal piece 1a. The adhesive 1b allows the reinforcing patch 1 to be temporarily attached to the reinforcing surface.

The material of the reinforcing patch 1 is preferably HARD
Wear-resistant steel (Swedish steel) known as OX400 ™ is used. This wear-resistant steel (Swedish steel)
Hardness 400 Brinell, Tensile Strength 127 kgf / m
m ² , weldability 0.38 CE value, high wear resistance,
Since it has good weldability, it is suitable as a material for the reinforcing patch of the present invention.

2 and 3 show an embodiment in which the excavation bucket attachment for civil engineering and construction machinery is welded and reinforced according to the present invention. The rear surface 4 of the excavation bucket 3 (FIG. 2) and the excavated wear edge surface 5 (FIG. 3) are reinforced by welding the reinforcing patch of the present invention.

Next, a description will be given of a working process for carrying out the invention of claim 2 using the reinforcing patch 1 of FIGS. 1b and 1c. First, a plurality of reinforcing patches 1 are provided on the surfaces 4 and 5 to be reinforced. Temporarily attach with the adhesive surface of 2. Since the reinforcing patch 1 is a small piece, it can be temporarily attached to the reinforcing surfaces 4 and 5 with a desired layout, and the reinforcing strength can be arbitrarily adjusted by laying out with a desired density. For example, even if the same reinforcing surface is used, a portion having a larger size of the reinforcing patch 1 may be used for a portion that is more likely to be worn, or the arrangement density of the reinforcing patch 1 may be made finer to increase wear resistance as necessary. It is possible to change the degree of reinforcement.

Since the reinforcing patch 1 can be easily attached to and detached from the reinforcing surfaces 4 and 5 in such a temporary attachment state, after the plurality of reinforcing patches 1 are temporarily attached to the reinforcing surfaces 4 and 5, the entire layout is reexamined. Then, if necessary, the arrangement of the reinforcing patch 1 is adjusted.

After the layout of the welding reinforcement patch 1 is determined, the reinforcement patch 1 is firmly fixed at the welded portion 6 by welding the periphery of each reinforcement patch 1 to the reinforcement surface as shown in FIG. 4b. The reinforcing surfaces 4 and 5 are reinforced to the desired wear resistance strength.

In the illustrated embodiment, the case of application to an excavation bucket is illustrated, but it is also possible to apply to a worn surface of a grip fork for dismantling, and it is not limited to civil engineering construction machines.
It can be widely applied to worn parts of general industrial machines and various machine tools.

Although a circular reinforcing patch is shown in the drawing as an example, it is needless to say that the reinforcing patch is not limited to this and may be formed into a small piece having a desired shape.

[0031]

[Effect] Since the present invention uses the welding reinforcement patch of the metal pieces as the reinforcement, the reinforcement can be standardized uniformly. Therefore, unlike the conventional case, it is not necessary to form a reinforcing material having a size corresponding to the reinforcing surface, so that the reinforcing work time is significantly shortened. In addition, mass production is possible, and since it is a small piece, there is no loss of steel material and it is economical.

By adjusting the density and the like of the welding reinforcing patch, the wear resistance of the reinforcing surface can be adjusted in various ways.

When an adhesive is applied to the reinforcing patch, it can be temporarily attached to the reinforcing surface, so that the layout can be changed after the temporary attachment and the patch is not displaced during welding. Since it does not drop even when it is welded to the surface, the efficiency and finish of the welding reinforcement work are significantly improved.

Since the reinforcing patch can be mass-produced and is a small piece, the yield of the raw material of the steel material is good, and the reinforcing patch is easy to transport and can be stocked, which has a great economic effect.

The use of wear resistant steel for the reinforcing patch significantly improves the reinforcing effect.

[Brief description of drawings]

1a is a perspective view of a reinforcing patch according to an embodiment of the present invention. FIG.

FIG. 1b is a perspective view of a reinforcing patch according to another embodiment of the present invention.

FIG. 1c is a perspective view of a reinforcing patch according to still another embodiment of the present invention.

FIG. 2 is a rear view of an excavation bucket showing an embodiment of welding reinforcement according to the present invention.

FIG. 3 is a perspective view of an excavation bucket showing a welding reinforcement example of the present invention.

[Fig. 4a] Welding reinforcement process diagram

[Fig. 4b] Welding reinforcement process diagram

[Explanation of symbols]

1 ... Reinforcement patch, 1a ... Small metal piece, 1b ... Adhesive,
3 ... excavation bucket, 4, 5 ... Reinforcing surface, 6 ... Welded portion.

Claims (7)

(57) [Claims] 1. A method for welding and reinforcing a machine tool, comprising welding a plurality of welding reinforcement patches of a plurality of metal pieces formed in a predetermined shape in advance on a desired reinforcing surface of the machine tool at an arbitrary arrangement and density. 2. A welding reinforcement patch of a plurality of small metal pieces formed in an arbitrary shape in advance is temporarily attached to a desired reinforcement surface of a machine tool in an arbitrary arrangement by detachable adhesion, and then the welding reinforcement patch is attached. Welding reinforcement method for machinery, characterized by welding at a desired adjustment position 3. The welded reinforcing patch used in the reinforcing method according to claim 1, which is composed of a metal piece formed in a predetermined shape and size. 4. The welding reinforcement used in the reinforcing method according to claim 2, comprising a metal piece formed in a predetermined shape and size, and an adhesive material applied to a welding surface of the metal piece. patch 5. The welding reinforcement patch used in the reinforcement method according to claim 2, wherein an adhesive is provided in advance on one surface of the reinforcing metal piece formed in a predetermined shape and size. 6. The welding reinforcing patch according to claim 4, wherein the adhesive is a double-sided tape. 7. The welding reinforcement patch used in the reinforcement method according to claim 2, wherein the material of the welding reinforcement patch is an abrasion resistant steel.