Fixing clamp, assembling component and assembling method

Abstract

The invention provides a fixing clamp used for assisting in mounting a sealing ring onto a low-pressure turbine shaft. The first ends of a first half ring and a second half ring of a clamping ring are pivoted with each other, and the second ends of the first half ring and the half ring are detachably connected; in a clamping and ejection mechanism, an ejection rod penetrates through the first half ring and is in threaded connection with the first half ring, the first end of the ejection rod is located on the outer side of the clamping ring, the second end of the ejection rod is located on the inner side of the clamping ring, an ejection block is located on the inner side of the clamping ring, the ejection rod is rotatably connected with the ejection block, and the ejection block is used for cooperating with the second half ring so as to clamp the low-pressure turbine shaft. at least three clamping jaws are distributed in the circumferential direction, and in each clamping jaw, an adjusting rod is rotatably supported on the clamping ring; and two flanges in each clamping jaw protrude from the side direction of the corresponding adjusting rod, and at least one flange away from the clamping ring is in a non-whole-circle shape. The invention further provides an assembling component comprising the fixing clamp and an assembling method adopting the assembling component. Through the adoption of the fixing clamp and the assembling component, the assembling method can be conveniently executed, and the attaching face of the low-pressure turbine shaft and a supporting cone wall can be conveniently checked when a low-pressure turbine unit body is assembled.

Description

technical field [0001] The present invention relates to a method for assembling a low-pressure turbine unit body, in particular, to an assembly assembly for assembling a low-pressure turbine unit body, and more particularly, to a fixing method for an auxiliary seal ring mounted to a low-pressure turbine shaft fixture. Background technique [0002] The low-pressure turbine unit body of the engine is usually divided into two parts: the low-pressure turbine rotor and the shaft. The low-pressure turbine shaft and the supporting cone wall of the low-pressure turbine rotor adopt a short spigot interference fit with an interference of 0.15-0.2, and then are connected by bolts. Due to the high tightness of the seam fit, it is necessary to check whether the two fit together during the installation process. In the conventional assembly process, use a 0.03 feeler gauge to check the gap between the mating surfaces, and if it fails to pass, it is considered that the mating surfaces of t...

AI Technical Summary

Problems solved by technology

However, the sealing ring 30 is an outsourcing structure. After being installed on the low-pressure turbine shaft 20, the connection surface or the fitting surface A3 between the low-pressure turbine shaft 30 and the supporting cone wall 40 is completely blocked, and the fitting surface A3 cannot be checked by a feeler gauge. Therefore, it is impossible to judge whether the low-pressure turbine shaft 20 is installed in place

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