Excavator provided with movable arm double-support structure

Abstract

The invention discloses an excavator provided with a movable arm double-support structure. One end of a first extending-and-contracting rod is connected to a rack, and the other end of the first extending-and-contracting rod is connected to a first corner of a triangular connecting plate. A second corner of the triangular connecting plate is connected with one end of a first connecting rod, and the other end of the first connecting rod is connected to a bucket. One end of a second connecting rod is connected to the rack, and the other end of the second connecting rod is connected with one end of a third connecting rod. The other end of the third connecting rod is connected to the bucket. One end of a second extending-and-contracting rod is connected to the rack, and the other end of the second extending-and-contracting rod is connected to the second connecting rod. One end of a third extending-and-contracting rod is connected to the rack, and the other end of the third extending-and-contracting rod is connected to a second slide block. The second slide block is arranged on a third connecting rod in a sleeving manner. One end of a fourth extending-and-contracting rod is connected to the triangular connecting plate, and the other end of the fourth extending-and-contracting rod is connected to a first slide block. The first slide block is arranged on the first connecting rod in a sleeving manner. By means of the excavator provided with the movable arm double-support structure, borne load of each rod is lowered; rotational inertia of a complete machine is lowered; and the excavator is stable in transmission, free of side gaps, high in precision and rigidity and good in dynamics performance.

Description

technical field [0001] The invention relates to the mechanical field, in particular to an excavator with a double support structure of a boom. Background technique [0002] An excavator, also known as an excavating machine, is an earth-moving machine that uses a bucket to excavate materials that are higher or lower than the bearing surface, and load them into transport vehicles or unload them to the stockyard. The materials excavated by the excavator are mainly soil, coal, sediment, and pre-loose soil and rock. Judging from the development of construction machinery in recent years, the development of excavators is relatively fast, and excavators have become one of the most important construction machinery in engineering construction. The common excavators on the market adopt the structure of boom, boom and bucket connected in series, and the oil cylinder is integrated on each arm. This design makes the boom play the role of excavating force and carrying the weight of the bu...

AI Technical Summary

Problems solved by technology

The common excavators on the market adopt the structure of boom, boom and bucket connected in series, and the oil cylinder is integrated on each arm. This design makes the boom play the role of excavating force and carrying the weight of the bucket at the same time. The oil cylinder of the boom has high performance requirements, which affects the improvement of the bucket capacity and operating weight

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