KR100884882B1 - Counterweight - Google Patents

Abstract

An object of the present invention is to provide a counterweight that can be easily reproduced and can be manufactured at low cost.

As a solution of the present invention, it is composed of at least one of the iron ball material 11 and the iron scrap 15 in the cast iron 12. It is better to cover the surface of this cast iron 12 with an exterior member 9. In the substantially center part of the cast iron 12, it is set as the structure which surrounds the iron box member 14 which filled the at least one of the iron ball material 11 and the iron scrap 15 inside with a casting.

Counterweight, heavy material, outer wall member, exterior member, iron material, cast iron, iron member, iron scrap, mold, support member.

Description

Counterweight {COUNTERWEIGHT}

1 is a block diagram of a counterweight of the first embodiment.

2 is an explanatory diagram of a method of manufacturing the counterweight of the first embodiment;

3 is a block diagram of a counterweight of a second embodiment;

4 is an explanatory diagram of a method of manufacturing the counterweight of the second embodiment;

5 is a side view of a typical hydraulic excavator.

6 is an explanatory view of the contents of a conventional counterweight.

[Description of Code for Major Parts of Drawing]

1: working vehicle, 2: bodywork, 3: working machine, 4: counterweight,

5: heavy weight, 6: sand, 7: cement, 8: outer wall member,

9: exterior member, 11: iron member, 12: cast iron, 13: iron member,

14: box member, 15: iron scrap, 21: mold, 22: support member.

The present invention relates to a counterweight that can be easily recycled.

In the prior art of the present invention, a work vehicle such as a hydraulic shovel, wheel loader, fork lift, etc. having a work machine generally has a side opposite to the work machine in consideration of the weight balance with the work machine side. The counterweight is provided at the end of the body. For example, in the hydraulic excavator as the work vehicle 1 shown in FIG. 5, the work machine 3 which has a boom, an arm, a bucket, etc. in the front part of the vehicle body 2 is provided, and the work machine 3 is provided. The counterweight 4 is provided at the rear end of the vehicle body 2 on the opposite side to the vehicle body 2.

Conventionally, such a counterweight 4 is made of castings, but this is very expensive. Therefore, in order to reduce the cost, as shown in Fig. 6, the heavy material 5 such as iron ore and iron scrap (waste material) and these heavy materials (inside the outer wall member 8 in which the steel sheet is sheet metal processed) The sand 6 which fills the space | interval of the heavy material 5 is accommodated, and also the thing which hardened the whole with the cement 7 so that this heavy material 5 and the sand 6 do not move is also produced.

Nowadays, environmental destruction by industrial waste has become a very big problem, and it is strongly required to recycle what is capable of separating, sorting and recycling materials constituting industrial waste. Conventionally, the idea of reproducing the counterweight has been conceived, but it is difficult to say that it is sufficiently reproduced yet. Even from the standpoint of reproducibility, the conventional structure has a poor reproducibility, making reproducing very difficult.

That is, in order to regenerate, it is necessary to separate the outer wall member 8 from the contents and to separate the heavy material 5 such as iron ore or iron scrap from the contents and concrete, but such work is carried out in a hydraulic excavator. Since the counterweight 4 is crushed by a dismantling machine or the like to peel off the outer wall member 8 and the weight 5, the efficiency is not very high, resulting in high cost. In addition, the separated concrete is low in recyclability, and is only used as a rock for embedding.

For this reason, there is a strong demand for a counterweight that can increase reproducibility and can be manufactured at low cost.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a counterweight which can be easily reproduced and which can be manufactured at a low cost.

The present invention will be described below in order to solve the above problems, the technical means and its operation and effects.

In order to achieve the above object, the first invention is a counterweight characterized in that at least one of iron ball material and iron scrap is covered with cast iron in cast iron.

According to the first aspect of the present invention, since the contents of the counterweight are made of cast iron and at least one iron material of iron scrap and iron scrap, the concrete and the steel of the contents are crushed during the regeneration as in the prior art. The extra work for separating the heavy material) becomes unnecessary, and since the iron contents can be directly put into an electric furnace or the like, reproducibility can be improved. As a result, the reproduction cost can be reduced. In addition, when using a shot ball, a bearing ball material or a pachinko ball as an iron ball material, it is possible to improve the regeneration of the waste material because it is difficult to dispose of waste after use. have. In addition, since the amount of cast iron can at least achieve the purpose by covering and covering the cast iron material or iron scrap with cast iron, it is possible to reduce the manufacturing cost.

According to a second aspect of the present invention, in the first invention, the surface of the cast iron covered with at least one of the iron ball member and the iron scrap is covered with an exterior member.

According to the second aspect of the present invention, even if the surface of the cast iron is covered with cast iron or the like, the counterweight can be constituted by covering with an exterior member such as a decorative board. In addition, at the time of regeneration, since the contents and the exterior member can be easily separated, reproducibility is also improved, and for this purpose, steel plates, synthetic resins, and the like can be used for the exterior member, so the material selection range is wide when designing the exterior member.

A third aspect of the present invention is a counterweight, wherein an iron box member filled with at least one of an iron ball member and an iron scrap is formed by being covered with cast iron at a substantially central portion of the cast iron.

According to the third aspect of the present invention, since the steel box member filled with the iron material, the iron scrap, and the like is located approximately in the center of the mold of the counterweight, the iron weight or the like is not exposed to the surface of the cast iron, and the counter weight is excellent. At the same time, the manufactured casting can be mounted on the car as a counterweight as it is, and the cost of the exterior member and the like can be reduced. At this time, since the counterweight can be made of only steel (that is, made of steel box member, steel ball member, iron scrap and cast iron), it is unnecessary to separate the steel during regeneration, thereby improving reproducibility. In addition, since iron box members such as shot balls and iron box members filled with iron scraps are covered and covered with castings, which have been difficult for conventional disposal, the cast iron amount can be reduced, and manufacturing can be performed at low cost.

The embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the first embodiment will be described with reference to FIG. Fig. 1 is a configuration diagram of the counterweight of the first embodiment, and Fig. 2 is an explanatory diagram of a manufacturing method thereof. The same elements as those in Fig. 6 are denoted by the same reference numerals and the description thereof is omitted here.

In Fig. 1, the counterweight 4 is composed of the contents of the internal casting and the exterior member 9 of the outer wall. The contents are covered by covering at least one of the iron ball 11 and the iron scrap 15 in the cast iron 12, in this embodiment, the iron ball 11 and the iron scrap (15) ) Shows an example of wrapping with a casting. The iron ball member 11 is made of, for example, a new one or a new one used as a shot ball for shot peening, a ball for bearing, or a pachinko ball. These iron ball materials 11 may be only a single particle diameter, or may mix several types of particle diameters. Moreover, the exterior member 9 covers the content of the said casting material, and is a makeup board comprised by sheet metal processing of the plate of steel thin plates, or by synthetic resin.

As shown in Fig. 2, the contents of the present embodiment include a predetermined amount of at least one of the iron ball member 11 and the iron scrap 15 in the mold 21 produced in the shape of the counterweight 4. Among these, molten metal of the cast iron 12 is injected. Although the iron casting material 11 and the iron scrap 15 may be exposed on the surface of the completed casting, the surface is covered by the said exterior member 9 at the time of vehicle mounting.

The action and effect by the present embodiment will be described.

(One). Since the contents consist only of at least one of the iron tool 11 and the iron scrap 15 and the cast iron 12, during regeneration, the separation and sorting of the members is performed, such as the separation of the iron and concrete described in the prior art. It does not need to be performed, and it can be put into an electric furnace or the like as it is after being crushed. Therefore, reproducibility can be improved.

(2). By using the used iron ball 11 and the iron scrap 15, which had been difficult in the conventional waste treatment, it is possible to further increase the regeneration of the waste material.

(3). Since the cast iron 11 and the iron scrap 15 are wrapped and covered with a casting, the quantity of the cast iron 12 can be reduced, and the inexpensive counterweight 4 can be manufactured.

Next, a second embodiment will be described. Fig. 3 is a configuration diagram of the counterweight of the present embodiment, and Fig. 4 is an explanatory diagram of the manufacturing method thereof.

The counterweight 4 consists of the iron member 13 provided in the substantially center part, and the cast iron 12 which covered the said iron member 13 as a whole, and wrapped it with the casting. The iron member 13 includes at least one of a box member 14 composed of a thin steel plate, and an iron member 11 and iron scrap 15 (waste material, weld slug, etc.) filled in the box member 14. It has one piece of steel, which is densely packed.

At the time of manufacturing the counterweight 4, first, at an approximately center position of the mold 21 forming the shape of the counterweight 4, the iron member 11 or the center of the box member 14 is formed. The iron member 13 which filled and covered iron materials, such as iron scrap 15, is provided, and is supported by support members 22, such as an iron plate. Next, the molten metal of the cast iron 12 is injected into the mold 21 to wrap the outside of the box member 14 with the cast iron 12.

The action and effects according to the second embodiment will be described. In addition, only the thing different from the case of 1st Example is described.

(One). Since the counterweight 4 is composed only of the steel box member 14 and the iron ball member 11 or the iron scrap 15 and the iron material of the cast iron 12, there is no need to separate the members during the regeneration, and the shredding is performed. After this (it breaks down to the size that can be put into a furnace), it can be put into an electric furnace etc. as it is. Therefore, the reproducibility can be improved.

(2). Since the iron box member 14, such as a shot ball, which is difficult to be disposed of in the past, or the iron box member 14 filled with the iron scrap 15, is covered with a casting, the cast iron amount is reduced, so that the manufacturing cost can be reduced. have.

(3). Since the iron member 11 or the iron scrap 15 is positioned at the center of the mold 21 by the box member 14, the iron member 11 or the iron scrap is exposed to the surface of the casting. The finished casting can be mounted on the vehicle as the counterweight 4 as it is, and the cost of the exterior member and the like can be reduced.

As described above, the present invention provides the following effects.

Since cast iron is used to wrap iron parts such as iron or steel scraps as cast iron, or steel box members filled with iron or steel scraps are cast into the cast iron. This eliminates the need for separate operation and greatly improves regeneration. Since the iron member is wrapped in a cast iron as cast iron, the amount of cast iron is reduced, and the counterweight can be manufactured at low cost.

Furthermore, since used used steel materials and iron scraps (waste materials and welding slugs, etc.) can be used effectively, which have been difficult for conventional waste disposal, and can improve the regeneration of waste materials and at a low cost. It can manufacture.

Claims (3)

delete A counterweight according to claim 1, characterized in that the surface of the cast iron (12) wrapped with any one of the iron material (11) and the iron scrap (15) is covered with an exterior member (9). A counterweight, wherein the counterweight is formed so as to enclose a steel box member (14) filled with one of an iron ball member (11) and an iron scrap (15) at the center of the cast iron (12).

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