Clamping mechanism for high-temperature test of cartridge receiver

Abstract

The invention belongs to the field of aero-engine tests, and particularly relates to a clamping mechanism for a high-temperature test of a cartridge receiver. The clamping mechanism comprises a base, a faceplate, a heat preservation cover, an adapter cylinder and a cartridge receiver test piece. The faceplate is fixedly mounted on the base, a gap is formed between the faceplate and the base, and the gap is filled with a thermal insulation material; the heat preservation cover is arranged on the faceplate, and a heating cavity is defined by the heat preservation cover and the faceplate; the adapter cylinder is contained in the heating cavity, the adapter cylinder is provided with an upper mounting edge and a lower mounting edge, and the lower mounting edge is connected with the faceplate through an axial positioning assembly, a radial positioning structure and a circumferential positioning assembly; the cartridge receiver test piece is accommodated in the heating cavity, and the cartridge receiver test piece is connected with the upper mounting edge of the adapter cylinder. According to the clamping mechanism, effective locking of the cartridge receiver adapter cylinder can be achieved in the high-temperature environment, the secondary locking function is achieved, and the problem that an existing clamping mechanism is loosened and fails in the heating process is effectively solved.

Description

technical field [0001] The application belongs to the field of aero-engine testing, and in particular relates to a clamping mechanism for casing high-temperature testing. Background technique [0002] For aero-engine casing components that work at high temperatures for a long time, such as the turbine rear casing, a series of static and fatigue tests need to be carried out during the development process. In order to better simulate the actual working environment of the casing, this type of Tests often need to be carried out in a high temperature environment. [0003] During the test, the casing test piece needs to be clamped and fixed on the test platform so that it does not move or rotate under the test load. At present, the casing test piece is connected to the upper mounting edge of the adapter barrel through bolts and nuts; the lower mounting edge of the adapter barrel has a U-shaped groove, which is pressed and fixed by a compression mechanism composed of anchor bolts,...

AI Technical Summary

Problems solved by technology

However, in the high-temperature test of the case, due to the influence of factors such as uneven heating of the components of the clamping mechanism and differences in the thermal expansion coefficient of materials, the clamping mechanism locked at room temperature will loosen during the heating process

In addition, since the casing test piece, the adapter barrel and the pressing mechanism must all be installed in a closed heating chamber for heating, once the clamping mechanism loosens during the heating process, it will not be able to perform secondary locking, resulting in the failure of the clamping mechanism. fail

Therefore, this structure is not suitable for casing high temperature test

Images