KR-102745037-B1 - Counter weights for excavators and their manufacturing methods

Abstract

According to the present invention, a counterweight for an excavator moves the total center of gravity of a fixed weight and a movable weight to a second center of gravity moved by a predetermined distance along a direction in which the movable weight slides outward from a first center of gravity formed along a center line of the fixed weight as the movable weight slides outward, thereby securing balance with respect to workpieces of various loads only by mounting one counterweight.

Inventors

• JUNG SAM OK

Assignees

• KUMKANG OK IND INC

Dates

Publication Date

20241220

Application Date

20231214

Priority Date

20231214

Claims (3)

1. In a counterweight for an excavator, which is provided with multiple arms at the front of the cab (CAB) and an engine room at the rear, A fixed weight mounted at the rear of the engine room; A movable weight mounted on the left and right sides of the fixed weight and capable of sliding back and forth a predetermined distance outward from the same line as the fixed weight; As the movable weight slides outward, the total center of gravity of the fixed weight and the movable weight moves from the first center of gravity formed along the center line of the fixed weight to the second center of gravity moved a predetermined distance along the direction in which the movable weight slides outward. In the above mobile weight, Auxiliary tire weight including a tire having a bottom surface protruding downwards from the bottom surface of the fixed weight; and A rotating shaft formed by penetrating the fixed weight and installed so as to be rotatable, and having auxiliary tire weights coupled on both sides; is further included; The above fixed weight further includes a rotation shaft movement guide formed as a long hollow body along the direction in which the rotation shaft moves, the short direction height being formed with a length having a predetermined size tolerance larger than the diameter of the rotation shaft; The auxiliary tire weight is driven to rotate when the vehicle body moves on a slope or turns, thereby preventing the fixed weight from being damaged due to a collision. The arm includes a first arm directly connected to the cap, a second arm connected to the first arm by a rotatable joint, and a bucket connected to the second arm by a rotatable joint. The counter weight for the above excavator includes: A tire transfer means for transferring the above rotational axis and the auxiliary tire weight coupled to the above rotational axis along the rotational axis moving guide is further included; The above tire transport means is, A first wheel installed a predetermined distance upward from the engine room; The first and second wheels are installed a predetermined distance rearward from the above fixed weight; An anchor installed on one side of the first arm; and A cable is installed on the first wheel and the second wheel and is spaced apart from the cap, the engine room and the fixed weight by a predetermined distance, and one end of the cable is connected to the anchor and the other end of the cable is connected to the rotation shaft; The above anchor is provided with a fixing position for fixing one side of the cable; The above cables are divided into a 1-1 cable defined from the fixed position through the 1-1 wheel to a point where it is mounted on the 1-2 wheel, and a 1-2 cable defined from a point where it is mounted on the 1-2 wheel to the rotation axis. The above 1-1 wheel and the above 1-2 wheel are spaced apart from the engine room and the fixed weight by a predetermined distance, respectively, to prevent the cable from contacting the excavator. The above 1-2 cables are formed parallel to the ground, so that the direction of tension applied to the cables is formed in the same direction as the direction in which the rotational axis is transferred to the rotational axis movement guide. A counterweight for an excavator, characterized in that when the first arm is rotated to one side, tension is formed in the cable, and the rotation axis and the auxiliary tire weight connected to the rotation axis are slid backward.
2. delete
3. delete

Description

Counter weights for excavators and their manufacturing methods The present invention relates to a counterweight for an excavator and a method for manufacturing the same, and more particularly, to a counterweight for an excavator which is installed at the rearmost part of an excavator and acts as a weight to prevent the excavator from falling over due to a force generated during operation, and which enables a center of gravity to move according to the weight bias of the counterweight, and which is easily attachable and detachable while having improved fastening durability, and a method for manufacturing the same. Heavy equipment such as excavators and loaders are used to dig up soil or sand at construction sites, transport earth and sand, and load or unload soil or sand onto trucks. In particular, heavy equipment such as the above is equipped with a main body with an engine, a work tool mounted on the front of the main body, and a counterweight on the rear. A counterweight is also called a counterweight. When a load is raised on a crane or forklift, etc., there is a risk of it tipping over. To prevent this, a weight is attached to counter the lifting load as far away as possible from the point of intersection where it could tip over. These counterweights are mainly used in cranes, but although they work on a different principle from cranes, they are also used in forklifts that lift heavy loads, and excavators, mainly called forklifts, that are used for digging or cutting the ground are equipped with counterweights to prevent them from falling over against the force applied. Conventional counterweights were fixedly mounted at the rear of heavy equipment. As a result, when a load exceeding the rated load of the fixed counterweight was applied to the work equipment, the center of gravity shifted forward, causing the rear to rise, resulting in a rollover accident. That is, even if the rated load of each piece of heavy equipment is known at a construction site, it is impossible to measure the weight load while working for each task, so there is a limitation that safety accidents frequently occur as a result. Meanwhile, the counterweights of conventional heavy equipment are mostly box-shaped and installed close to the ground to provide stability, which lowers the vehicle body and causes problems such as collisions with the ground when the heavy equipment moves. FIG. 1 is a conceptual diagram of an excavator equipped with a counter weight for an excavator according to one embodiment of the present invention. FIG. 2 is a conceptual diagram illustrating a counter weight for an excavator according to one embodiment of the present invention in a plan view. FIG. 3 is a conceptual diagram of an excavator equipped with a counter weight for an excavator according to another embodiment of the present invention. FIG. 4 is a conceptual diagram illustrating a counter weight for an excavator according to another embodiment of the present invention in a plan view. FIG. 5 is a conceptual diagram illustrating a side view of a fixed weight according to another embodiment of the present invention. FIG. 6 is a conceptual diagram of an excavator equipped with a tire transfer means according to another embodiment of the present invention. Figure 7 is a conceptual diagram showing a front view of a fixed weight according to another embodiment of the present invention. Figure 8 is a conceptual diagram showing a side view of a rotation shaft fixing guide according to another embodiment of the present invention. FIG. 9 is a conceptual diagram of an excavator equipped with a tire transfer means according to another embodiment of the present invention. Figure 10 is a conceptual diagram of an anchor according to another embodiment of the present invention. Hereinafter, embodiments will be described in detail with reference to the attached drawings. However, since various modifications may be made to the embodiments, the scope of the patent application rights is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, or substitutes to the embodiments are included in the scope of the rights. Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only and may be modified and implemented in various forms. Accordingly, the embodiments are not limited to specific disclosed forms, and the scope of the present disclosure includes modifications, equivalents, or alternatives included in the technical idea. Although the terms first or second may be used to describe various components, such terms should be construed only for the purpose of distinguishing one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. When it is said that a component is "connected" to another component, it should be understood that it may be directly conne