Helicopter rotating disk bearing and fixed disk installing and positioning tool and installing method

Abstract

The invention belongs to the helicopter assembling technology and particularly relates to a helicopter rotating disk bearing and fixed disk installing and positioning tool and an installing method. The helicopter rotating disk bearing and fixed disk installing and positioning tool comprises a guiding ring (1), a guiding support (3) and a fixed mechanism, wherein the guiding ring is of an annular structure with a positioning hole, and the outer diameter size of the guiding ring is matched with the inner diameter of a rotating disk bearing; guiding grooves at the interval of 180 degrees are arranged on the outer surface of the guiding ring; the guiding grooves are matched with the positions of positioning grooves of the inner circle of the bearing; and the guiding support is of a support structure with two guiding columns matched with the guiding grooves, and is arranged on the guiding ring, and the guiding columns and the guiding grooves are matched. According to the helicopter rotatingdisk bearing and fixed disk installing and positioning tool and the installing method, due to the guiding ring and the guiding support, accurate installing and positioning between the rotating disk bearing and a fixed disk are achieved, locking is achieved through a locking piece, the structure is simple, operation is convenient, positioning is accurate, the installing efficiency is high, and very high actual application value is achieved.

Description

technical field [0001] The invention belongs to the helicopter assembly technology, and in particular relates to a helicopter rotating disk bearing and a fixed disk installation and positioning tool and an installation method. Background technique [0002] like figure 1 As shown, the top main rotor of the helicopter and the main shaft below are covered with a rotating disk 12, which functions to rotate synchronously with the rotor, and is matched with the rotating disk to be a fixed disk 13, which acts not to rotate with the main rotor, but is fixed on the On the casing of the final reducer, the fit between them is connected by a large ball bearing 11. [0003] In order to make them closely fit, it is necessary to install the large bearing in the central inner hole 16 of the rotating disc. The diameter of the outer ring of the large bearing is slightly larger than the diameter of the central inner hole of the rotating disc. There is an interference fit between them, and it ...

AI Technical Summary

Problems solved by technology

There are two notched grooves 14 on the upper surface of the inner ring of the bearing. In order to install the locking piece, this notch should be at the center of the two holes on the outer surface of the boss of the fixed plate. At this time, the locking piece should be quickly adjusted while installing. At this time, the inner ring of the bearing is gradually cooled at room temperature. Due to the principle of heat expansion and contraction, the diameter of the inner ring becomes smaller. Correct installation and adjustment, the whole process is relatively tense, easy to lock, and the success rate is low, which affects the quality and efficiency of helicopter assembly

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