KR940007974Y1 - Variable type counter weight for heavy equipment - Google Patents

Abstract

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Description

Variable counter weight for heavy construction equipment and transportation equipment

1 is a perspective view of a conventional counterweight.

2 is a perspective view of a counterweight according to the present invention.

3 is a working state of the present invention.

4 is a cross-sectional view of the present invention.

5 is a hydraulic circuit diagram of the present invention.

* Explanation of symbols for main parts of the drawings

1, 1 ': counterweight 2, 2': cylinder

3, 3 ': piston rod 4: support

5, 5 ': support plate

The present invention is to increase the stability of the equipment by installing to prevent the overturning and shaking of the heavy equipment and transportation equipment to adjust the position of the counter weight in the counterweight (Countweight).

More specifically, after dividing the counterweight into two, each hydraulic counterweight is mounted on each counterweight so that the counterweight is moved from the center of the equipment to the rear by the hydraulic cylinder. When carrying a heavy object and when working in an inclined place, it is to stabilize the work and to prevent the back and forth shaking of the equipment.

In general, heavy construction equipment such as excavators and wheel loaders and transport equipment such as forklifts are provided with work equipment and transport equipment on one side from the center of the equipment, so that they can carry heavy loads and heavy items. When the equipment is installed, counterweights are placed on the opposite side of each device to prevent the device from tipping to the side where it is installed.

However, since the counter weight of the conventional excavator is composed of a single body and fixed to the equipment as shown in FIG. 1, the weight of the counter weight is designed to maintain the work stability in overload work and inclined places. It is not only because of heavy fuel consumption, but also excessive force on the frame of the equipment, and excessive load on the work equipment, the balance of the whole equipment is not balanced and the equipment shakes badly. There was.

The present invention has been made in order to eliminate the problems as described above is to reduce the weight of the counterweight to prevent excessive force applied to the vehicle body, and to reduce the consumption of fuel by reducing the overall weight of the equipment.

Another object of the present invention is to prevent the shaking of the equipment by maintaining the balance of the entire equipment during the excessive load on the work equipment.

A feature of the present invention for achieving the above object is to fix one end of the support plate on the upper and lower portions of the support, and the other end left and right of the support plate to be fixed to rotate around the hinge axis, the counterweight is the support The configuration of the present invention will be described in detail with reference to the accompanying drawings as configured to be moved by a mobile device installed in the following.

2 and 3 are views showing the overall perspective view of the present invention, Figure 2 shows the position of the counter weight when the normal work, Figure 3 shows the position of the counter weight when the overload work, 1, 1 'is a counter weight, 2, 2' is a cylinder, 3, 3 'is a piston rod, 4 is a support, 5, 5' is a support plate. In the counterweight for preventing overturning and shaking of heavy construction equipment and transportation equipment as shown, the support plate (4) for fixing one end of the cylinder (2, 2 ') and one end of the support plate (5, 5), and One end is fixed to the upper and lower portions of the support plate 4, and the other end of the support plate (5, 5 ') is fixed so that the counterweight (1, 1') is rotated about the hinge shaft (6, 6 '), and A counterweight 1, 1 ′ fixed to the support plates 5, 5 ′ by hinge shafts 6, 6 ′ and moved by piston rods 3, 3 ′, the counter weight 1 And 1 'are fixed to the piston rods 3 and 3', and the support 4 is fixed to the cylinders 2 and 2 'so that the counter rods reciprocate as the piston rods 3 and 3' are reciprocated. The weights 1 and 1 'are configured to be moved. The present invention as described above may be installed so that the counterweight (1, 1 ') is moved by a mechanical or mechanical method rather than a cylinder.

5 is a hydraulic circuit diagram of the present invention, in which each of the cylinders 2 and 2 'is connected to a direction switching valve 7 for opening and closing the hydraulic pressure discharged from the pump 8 to move the direction switching valve 7. By doing so, the piston rods 3 and 3 'of the cylinders 2 and 2' are reciprocated. At this time, the cylinder (2, 2 ') can be implemented to be operated by high pressure.

Referring to the effect of the present invention configured as described above are as follows.

First of all, if the work device of heavy construction equipment and transportation equipment is not loaded with a large load, the directional pull valve 7 of FIG. State) The oil discharged from the pump is supplied to the front of the cylinders 2 and 2 '(the piston rod side), and the piston rods 3 and 3' are reversed so that the counter weights 1 and 1 ' And the same state as the solid line of FIG.

Accordingly, the counterweights 1 and 1 'move in the direction of the central axis with respect to the central axis of the equipment. Afterwards, when working under heavy load or when working at an inclined position, the direction switching valve 7 of FIG. 5 is moved to the right ( State) The oil discharged from the pump 8 is supplied to the rear of the cylinders 2, 2 'so that the piston rods 3, 3' are advanced to position the counterweights 1, 1 'in the same state as the third degree. To be moved (imaginary line in FIG. 4).

Therefore, the counterweights 1 and 1 'are separated from the central axis of the equipment, so that the equipment can be prevented from being rolled over or shaken even when the overweight work or the inclined work is performed. That is, when oil is supplied to the rear of the cylinders 2 and 2 'and the piston rods 3 and 3' are advanced, the counterweights 1 and 1 'are hinged shafts 6 and 6' on both sides as shown in the third diagram. Since the counterweights 1 and 1 'are lighter than the conventional ones, they can be operated under the same conditions as the conventional ones, thereby reducing the weight applied to the vehicle body as well as the overall equipment. The weight of the fuel can be reduced to save fuel consumption. And, if the weight of the counter weight (1, 1 ') is the same as the conventional weight position of the counter weight can be moved backward than the conventional, such that it is possible to prevent the equipment from shaking from side to side.

Claims (2)

In the counterweight for preventing overturning and shaking of the heavy construction equipment and the transportation equipment, one end of the support plates 5 and 5 'is fixed to the upper and lower portions of the support 4 and the other ends of the support plates 5 and 5'. Left and right counterweights (1, 1 ') are pivotally fixed around the hinge shafts (6, 6'), the counterweights (1, 1 ') are provided on a moving device installed on the support (4) Variable counterweight of construction equipment and transport equipment, characterized in that configured to move by. 2. A variable counter weight according to claim 1, characterized in that the counter weights (1, 1 ') are transported by means of hydraulic cylinders (2, 2').