Telescopic arm of fire fighting truck of climbing platform

Abstract

The embodiment of the invention discloses a telescopic arm of a fire fighting truck of a climbing platform, and belongs to the technical field of fire fighting and rescue equipment. The telescopic arm comprises a plurality of stages of telescopic cylinders which are sequentially arranged together in a sleeved mode, wherein each stage of telescopic cylinder comprises a plurality of telescopic joints which are arranged together in a sleeved mode, each stage of telescopic cylinder is connected with a steel wire rope hydraulic lifting device, the steel wire rope hydraulic lifting device of the first-stage telescopic cylinder is arranged in the telescopic joint on the outermost layer, and the steel wire rope hydraulic lifting device of the next-stage telescopic cylinder is arranged in the telescopic joint on the innermost layer of the previous-stage telescopic cylinder; and the telescopic joint on the outermost layer of the next-stage telescopic cylinder is arranged in the telescopic joint on the innermost layer of the previous-stage telescopic cylinder in a sleeved mode, and an oil pipe conveying device used for supplying oil to the next-stage telescopic cylinder is arranged in the telescopic joint on the innermost layer of the previous-stage telescopic cylinder. According to the telescopic arm, the technical problems that the lifting height of an existing telescopic arm is greatly limited by the transmission mode of a hydraulic oil cylinder, and hydraulic oil power cannot be continuously conveyed along with lifting of the telescopic arm are solved, and the telescopic arm is widely applied to high-altitude fire fighting or rescue.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of fire fighting and rescue equipment, in particular to a telescopic arm of a fire truck on an elevated platform. Background technique [0002] With the increasing number of high-rise buildings, frequent high-altitude fire accidents in recent years have attracted more and more public attention. At present, there are usually two forms of telescopic arms used on fire trucks on climbing platforms, one is the curved arm structure, and the other is the telescopic tube structure. The lifting and lowering of the telescopic arm in the form is realized by the expansion and contraction of the hydraulic cylinder. The lifting height depends on the stroke of the hydraulic cylinder, and the stroke of the hydraulic cylinder is limited. The single transmission of the hydraulic cylinder stroke alone makes the rescue height of the telescopic arm difficult. It meets the building height of current hig...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the embodiment of the present invention provides a telescopic arm of a climbing platform fire truck to solve the problem that the lifting height of the existing telescopic arm is limited by the transmission form of the hydraulic cylinder and the hydraulic pressure The technical problem that the oil power cannot be continuously conveyed with the lifting of the telescopic arm

Images