Excavator big arm

Abstract

The invention belongs to the technical field of machining equipment and particularly relates to an excavator big arm. The excavator big arm comprises a big arm body, an extending arm is arranged on the big arm body and located at the end of the big arm body, the extending arm is connected with the big arm body through a connecting hole, a connecting plate is arranged at the top of the extending arm, the connecting hole is located in the connecting plate, a fixing clamp is arranged on the connecting plate, and the other end of the fixing clamp is fixed to the big arm body. According to the excavator big arm, the extending arm is arranged on the big arm body and can extend the length of the excavator big arm, and furthermore the lifting angle of an excavator can be increased in the excavating process, and the problem that when the excavator excavates dirt or gravel, an excavator bucket is pressed by a heavy object and cannot be taken out is solved; and the lifting angle of the excavatorbucket can be greatly increased through the position arrangement of the connecting plate and a round plate, and the excavating efficiency and the excavating effect are further improved.

Description

technical field [0001] The application belongs to the field of mechanical processing equipment, in particular to an excavator boom. Background technique [0002] An excavator, also known as an excavating machine, is an earth-moving machine that uses a bucket to dig materials higher or lower than the bearing surface, and loads them into transport vehicles or unloads them to the stockyard. [0003] 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 first generation of excavators: The emergence of electric motors and internal combustion engines enabled excavators to have advanced and suitable electric devices, so various excavator products were born one after another. In 1899, the first electric ex...

AI Technical Summary

Problems solved by technology

[0004] When the existing excavator is digging, due to the design problem of the connection between the boom and the forearm, the lifting angle of the bucket connected to the forearm is limited, and it is easy to be crushed by gravel or soil and cannot be lifted upwards.

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