Assembly tool for communicating pipeline of fuel system and assembly method thereof

Abstract

The invention belongs to an aircraft fixture assembly technology and relates to an assembly tool for a communicating pipeline of a fuel system. The assembly tool for the communicating pipeline of the fuel system comprises a locating nut, a front baffle, a rear baffle, a compression nut, a handle and a pull rod, wherein one end of the pull rod is connected onto the handle; the compression nut is arranged between the rear baffle and the handle; the front baffle and the rear baffle are arranged at intervals; and the locating nut clings to the front baffle. According to the assembly tool for the communicating pipeline of the fuel system, the front baffle and the rear baffle are compressed tightly to fix the communicating pipeline. The assembly tool for the communicating pipeline of the fuel system has a simple structure and convenience in manufacturing; in practical assembly, multi-operator operation is not needed, and the assembly can be conveniently finished only by one operator, thereby, the assembly difficulty is effectively reduced, the riveting assembly period is shortened, and the installation quality of the aircraft fuel system is improved.

Description

technical field [0001] The invention belongs to the aircraft type frame assembly technology, and relates to an assembly tool for a fuel system communicating pipe. Background technique [0002] The aircraft fuel system consists of mandatory fuel tanks and optional fuel tanks. The oil tanks are communicated with each other through connecting pipes. The aircraft fuel tank is made of hard rubber, and there is a protruding round pipe between the front and rear fuel tanks—this is the fuel tank connecting pipe, and the connecting pipe is integrated with the fuel tank. The two fuel tank connecting pipes are assembled in the hole and shaft type, but the product is designed as a rubber tube with the same outer diameter and is assembled by interference fit, so as to avoid the gap between the two connecting pipes after installation, resulting in oil leakage in the oil circuit. One of the two hard rubber connecting pipes is inside, and the other is installed outside it. Under the requi...

AI Technical Summary

Problems solved by technology

Completely manual installation, the operator applies force to the connecting pipe with a diameter of 70mm through five fingers on the hand, the force is uneven, the action area is small, and the inside of the fuel tank is not open, the light is not good, and the lack of oxygen and other adverse conditions, so According to the traditional method of installing the connecting pipe of the aircraft fuel system-completely manual installation, it is very difficult to install, requiring four people, divided into two groups, and working in turns. Generally, the connecting pipe of a fuel tank needs to be installed for more than six hours, seriously injuring the operator. In good health and low work efficiency, the assembly quality cannot meet the requirements of product drawings

Completely manual installation, because the installation is difficult, when the operator installs the connecting pipe, he has to flatten or pinch the connecting pipe of one fuel tank into an irregular shape to make the diameter smaller, and then push into the other connecting pipe by hand to install Afterwards, even if the inner connecting pipe rebounds, due to the large stress, the inner connecting pipe that has been pinched and deformed cannot return to its original shape, and it will not fit with the outer connecting pipe locally. Leaking oil throughout the fuel system

After this fault occurs, the operator and the inspection cannot find it until the entire fuel system is installed. When the tightness test is performed on the fuel system of the whole machine, the pressure tester will show that the fuel tank is not sealed.

At this time, the operator has to check the connection parts of the fuel system of the whole machine one by one, which seriously affects the production and delivery cycle of the aircraft

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