Bucket rod, movable arm and excavator for PBA subway station fast construction

Abstract

The invention discloses a bucket rod, a movable arm and an excavator for PBA subway station fast construction. First hinge parts are arranged at the two ends of the bucket rod, and at least one end ofthe bucket rod comprises a first sound eliminating assembly. Each first sound eliminating assembly comprises a first elastic buffering part and a first sound eliminating part connected with the firstelastic buffering part. In the limit area of the motion stroke of the bucket rod, the structures hinged to the first hinge parts impact the first sound eliminating parts so as to compress the first elastic buffering parts. By means of the bucket rod of the excavator, the movable arm of the excavator and the excavator used for PBA subway station fast construction, two sound eliminating effects areachieved, on the one hand, the first elastic buffering parts are used for abutting against the last section of the impact stroke, and therefore the impact noise at the moment is lowered, and on the other hand, the first sound eliminating assemblies are used for furthering absorbing the impact noise, and noise reduction treatment is conducted from an initiative aspect and a passive aspect.

Description

technical field [0001] The invention relates to engineering machinery technology, in particular to an excavator for rapid construction of a bucket rod, a boom and a PBA subway station. Background technique [0002] At present, it is more common for subway construction to encounter downtown areas, such as Line 12 of the Beijing Subway, the middle of which is arranged along the bustling North Third Ring Road. In order to minimize the impact on the work and life in urban areas, the PBA subway station construction method has become the mainstream construction method for downtown subway stations. Go underground to carry out construction and excavation of beams, columns, arches, etc., so as to minimize the impact on the ground, so as to realize the construction of the subway station without affecting the passage of the main road on the ground. [0003] During the construction of the PBA subway station, the excavation of the excavator is basically carried out in the narrow undergr...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the existing technology is that there is basically no noise reduction technology for the impact noise during excavation, which is also one of the main noise sources of excavators, and the technology of isolating the cab and reducing noise can only protect the driver of the excavator One person, but there are many other construction workers on the construction site. At the same time, it is difficult for the driver of the excavator to hear the outside sound after the high-efficiency sound insulation, which also brings potential safety hazards to the construction

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