Small aero-engine fixed spraying pipe disassembly puller and use method thereof
A technology for aero-engines and nozzles, which is applied to hand-held tools, manufacturing tools, etc., can solve problems such as deformation, affecting the quality and efficiency of engine decomposition and assembly, and knocking damage to components.
Active Publication Date: 2020-04-03
AECC SICHUAN GAS TURBINE RES INST
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Problems solved by technology
[0002] At present, the tail nozzle of small aero-engines generally adopts a thin-walled fixed nozzle structure. Therefore, during the operation of the engine, the high-temperature and high-pressure gas in the flow channel can easily cause various deformations of the fixed nozzle and the outer shell that it contacts. The stagnation and adhesion caused the tightness of the fit to increase significantly, but at the same time, because the fixed nozzle is a tapered sleeve structure, there is no axial bearing surface required to meet the disassembly requirements. Therefore, when decomposing the fixed nozzle, it mainly relies on the rubber first. The hammer repeatedly strikes the outer wall
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[0030] The present invention is described in further detail below.
[0031] see figure 1 , is a structural schematic diagram of a puller for removing a fixed nozzle of a small aero-engine provided by an embodiment of the present invention. Such as figure 1 As shown, the small aero-engine fixed nozzle removal puller includes:
[0032] The supporting screw assembly 1 includes a screw 1c and a spherical base 1a fixed on the bottom of the screw 1c, and the spherical base 1a is set on the inner nozzle tail cone of the engine;
[0033] The lower slider assembly 2 includes a threaded sleeve 2b and a plurality of first external brackets 2a, the threaded sleeve is sleeved on the screw 1c, and one end of the external bracket is connected to the threaded sleeve;
[0034] The upper slider assembly 3 includes a sliding sleeve 3a and a plurality of second external brackets 3b, the sliding sleeve 3a is slidably sleeved on the threaded sleeve 2b, and one end of the second external bracket ...
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The invention discloses a small aero-engine fixed spraying pipe disassembly puller and a use method thereof. A spherical base of a screw assembly supported by the puller is fixed to the tailcone end of an inner culvert spraying pipe of an engine to adjust a threaded sleeve of a lower sliding block assembly to move downwards, rubber parts of main brackets of telescopic bracket assemblies are enabled to extend into the area between the internal spraying pipe and a fixed spraying pipe, then a sliding cylinder of an upper sliding block assembly is adjusted to move downwards, the rubber parts at the front ends of the main brackets are prompted to be in contact with and be attached to the inner wall of the fixed spraying pipe to make the threaded sleeve move upwards, thus the multiple sets of telescopic bracket assemblies in the circumferential direction are driven to move upwards at the same time, and the fixed spraying pipe is pulled out of an outer culvert shell in the reverse heading direction. According to the disassembly puller and the use method provided by embodiments, the adjustable disassembly puller is provided by adopting a telescopic mechanism, a locking mechanism and the like, the smooth removal of the fixed spraying pipe is ensured, and the situation that components are damaged by impact, fatigue fracture and the like is avoided.
Description
technical field [0001] The invention belongs to the field of aviation manufacturing engineering, and relates to a puller for removing a fixed nozzle of a small aeroengine and a use method thereof. Background technique [0002] At present, the tail nozzle of small aero-engines generally adopts a thin-walled fixed nozzle structure. Therefore, during the operation of the engine, the high-temperature and high-pressure gas in the flow channel can easily cause various deformations of the fixed nozzle and the outer shell that it contacts. The stagnation and adhesion caused the tightness of the fit to increase significantly, but at the same time, because the fixed nozzle is a tapered sleeve structure, there is no axial bearing surface required to meet the disassembly requirements. Therefore, when decomposing the fixed nozzle, it mainly relies on the rubber first. The hammer repeatedly strikes the outer wall of the nozzle outward along the circumferential direction, and then relies o...
Claims
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Login to View More IPC IPC(8): B25B27/02
CPCB25B27/02
Inventor 付玄刘自成徐广庆杨文波曹冰朱浩淼
Owner AECC SICHUAN GAS TURBINE RES INST