CN-121994475-A - Integrated device with polytype positioning and environment simulation functions and test method

CN121994475ACN 121994475 ACN121994475 ACN 121994475ACN-121994475-A

Abstract

The invention belongs to the technical field of aeroengine ground test equipment, and particularly discloses an integrated device with multi-type positioning and environment simulation functions. The tool comprises a supporting structure, a positioning structure and a box body structure. The support structure is a rigid framework formed by longitudinal and transverse welded rib plates, and an outer partition plate integrated with a multifunctional interface is fixed on one side of the support structure. The positioning structure is installed on the rib plate in a modularized mode through the replaceable installation sleeve, comprises at least two positioning assemblies which are adjustable horizontally and adjustable vertically, can be quickly adapted to the positioning requirements of aviation products of different types through replacing the installation sleeve, and can move freely along the axial direction to compensate thermal expansion. The box structure comprises a side plate and a top plate, and can be quickly assembled and disassembled with the supporting structure, when an environmental test is needed, the box structure and the supporting structure enclose a heat-preserving and sealing simulation environment chamber together, and lubrication, sensing and temperature control gas conveying are performed through reserved interfaces on the outer partition plates. The invention integrates the generalized positioning function and the integrated environment simulation function, solves the technical problems of single function, inconvenient switching and complex construction of the simulation environment of the existing tool, obviously improves the test efficiency and reduces the construction cost of the bench.

Inventors

REN YI
ZU GUODONG
CHENG GONG
ZHANG ZHENQI
LIU SHUYU
JIANG YU

Assignees

中国航发哈尔滨东安发动机有限公司

Dates

Publication Date: 20260508
Application Date: 20260225

Claims (10)

1. An integrated device with polytype positioning and environment simulation functions, which is characterized by comprising: The support structure comprises a basic framework formed by longitudinal and transverse welded rib plates; the positioning structure is arranged on a rib plate of the supporting structure and used for fixing aviation products, the positioning structure comprises at least two horizontal positioning components with adjustable horizontal directions and one vertical positioning component with adjustable vertical directions, the horizontal positioning components and the vertical positioning components are connected with the rib plate through replaceable mounting sleeves, and the mounting sleeves with different positioning pin hole positions are replaced to adapt to mounting interfaces of aviation products of different types; The box structure is detachably mounted on the supporting structure, the box structure comprises a side plate and a top plate, and the side plate and the outer partition plate are jointly enclosed into a closed simulated environment chamber by the supporting structure and used for sealing and heat preservation of aviation products placed in the chamber.
2. The integrated device with the functions of multi-type positioning and environment simulation according to claim 1, wherein the supporting structure further comprises an outer partition plate fixed on one side of the rib plate, and a sensing line inlet, an oil return port, an air inlet and an air outlet which are communicated with the environment simulation cavity are integrally formed in the outer partition plate.
3. The integrated device with the functions of multi-type positioning and environment simulation according to claim 2, wherein each horizontal positioning component of the positioning structure comprises a mounting sleeve and a positioning pin, the mounting sleeve is fixed on the rib plate through shaft hub matching, the positioning pin and the mounting sleeve are connected through shaft hub matching, a flat key is arranged between the positioning pin and the mounting sleeve to prevent relative rotation, and the positioning pin has a horizontal movement degree of freedom in the mounting sleeve along the axial direction of the positioning pin.
4. The integrated device with the functions of multi-type positioning and environment simulation according to claim 3, wherein the vertical positioning component of the positioning structure comprises a bushing, a bottom mounting sleeve, a limiting sleeve and a bottom positioning pin, the bushing is fixed on the rib plate through shaft hub matching, the bottom mounting sleeve is mounted in the bushing through shaft hub matching, the limiting sleeve is fixed in the bottom mounting sleeve, the bottom positioning pin is in interference fit with the limiting sleeve and is limited to vertically fall off, the bottom positioning pin has upward vertical movement freedom degree in the limiting sleeve, and circumferential rotation is prevented through a flat key.
5. The integrated device with the functions of multi-type positioning and environment simulation according to claim 2, wherein the side plates and the top plate of the box body structure and the outer partition plate of the supporting structure are of a double-layer partition plate structure, and heat insulation materials are filled in the middle of the double-layer partition plate structure.
6. The integrated device with the functions of multi-type positioning and environment simulation according to claim 5, wherein an observation window and a pressure relief valve are arranged on a side plate of the box body structure, the observation window is made of transparent heat insulation materials, and the pressure relief valve is used for automatically relieving pressure when the pressure in the cavity is too high.
7. The integrated device with multiple positioning and environmental simulation functions according to claim 2, wherein the flow cross section of the air inlet is larger than the flow cross section of the air outlet.
8. The integrated device with polytype positioning and environmental simulation functions according to any one of claims 1 to 7, wherein the positioning pin is provided with a handle at its end.
9. The integrated device with multiple positioning and environmental simulation functions according to any one of claims 1 to 7, wherein the case structure and the supporting structure are detachably connected, so that the tool can be switched between a single positioning function state and a positioning and environmental simulation integrated function state.
10. A method of performing an aerospace product test using an integrated device according to any one of claims 1 to 9, comprising the steps of: According to the model of the air product to be tested, selecting or processing an installation sleeve of a horizontal and vertical positioning assembly with a corresponding positioning pin hole position; mounting the selected mounting sleeve to a gusset of the support structure; positioning and mounting the aviation product through the positioning pin of the positioning structure; When an environment simulation test is required to be carried out, the side plates and the top plate of the box body structure are mounted on the supporting structure to form a closed simulated environment chamber; The air inlet and the oil return ports on the outer partition plate are connected with a lubrication system of aviation products, the air inlet and the oil return ports on the outer partition plate are connected with a test sensor through a sensing wire inlet, and the air inlet and the air outlet are connected with a temperature control gas supply system; Performing a test, and compensating thermal expansion of the aviation product due to temperature change by using the movable degree of freedom of the positioning pin in the mounting sleeve; and the test state is observed through the observation window, and when the pressure in the chamber is abnormally increased, the pressure relief valve automatically acts.

Description

Integrated device with polytype positioning and environment simulation functions and test method Technical Field The invention relates to the technical field of ground tests of aeroengines and accessory transmission systems thereof, in particular to a universal tool for fixing tested products (such as a gearbox, a transmission shaft and the like) on a test bench and rapidly constructing a closed and temperature-controlled test environment when needed. Background Prior to installation, an aeronautical machine transmission system (hereinafter "aeronautical product") must be subjected to adequate performance, durability and environmental compatibility checks on ground testers. The ground test generally comprises a normal temperature functional test and a high temperature, low temperature and other environment simulation test. There are two major pain points in the traditional test method: The positioning tool has poor universality, and special positioning tools are required to be designed and manufactured for aviation products with different models and different installation interface sizes. The design and manufacturing cost is high, the period is long, the tool inventory management is complex, and the test bed is frequently transformed. The environment simulation is separated from the positioning, and a large environment simulation box is additionally built on the periphery of the positioning tool when the environment tests such as high temperature, low temperature and the like are carried out. The simulation box is generally heavy in structure and complex in installation, needs to be precisely adjusted to avoid interference with a positioning tool and a rotating product, and has the problems that tightness is difficult to ensure, an internal temperature field is not uniform, a large amount of test space is occupied and the like. Switching between normal temperature and ring mode test conditions is time consuming and laborious. The prior art lacks an integrated solution capable of deeply fusing a high-precision and adjustable general positioning function with a convenient, efficient and high-performance environment simulation function. Disclosure of Invention The invention aims to overcome the defects of the prior art and provides an integrated device with polytype positioning and environment simulation functions. The core design concept is to construct a modularized and reconfigurable rigid supporting framework, and integrate a set of universal positioning system with a replaceable core and a set of heat-preserving flexible box system with quick disassembly. The technical scheme of the invention is realized as follows: In a first aspect, the present invention provides an integrated device having multiple positioning and environmental simulation functions, which is characterized by comprising three functional modules: the supporting structure is used as the basis of the whole tool, and the grid-shaped rib plates are formed by criss-cross welding of high-strength steel materials, so that an extremely stable and high-rigidity basic framework is formed. An outer spacer is bolted to one side (usually the rear or side) of the framework. The outer baffle plate is not only a part of the box body, but also an integrated interface panel, and a series of standard interfaces such as a sensing line inlet, an oil return port, an air inlet, an air outlet and the like are processed on the integrated interface panel in advance. Positioning structure this is the core for implementing the "polytype positioning" function. The horizontal positioning assembly comprises at least two groups of horizontal positioning assemblies and one group of vertical positioning assemblies, and the horizontal positioning assemblies and the vertical positioning assemblies are connected with rib plates of a supporting structure through a key transition piece, namely a mounting sleeve. The mounting sleeve is fixed at a preset position of the rib plate in a matched manner through a precise shaft hub (or called spigot). For products of different models, the space coordinates of locating points can be changed only by designing and replacing the mounting sleeves with different locating pin hole positions, and the main framework is not required to be changed. The locating pin is inserted into the mounting sleeve and prevented from rotating by the flat key, but is allowed to have a certain degree of freedom along the axial direction (the horizontal direction for the horizontal locating pin and the vertical upward direction for the bottom locating pin). This freedom is critical and allows the aerospace product to adaptively move slightly as it undergoes thermal expansion/contraction due to temperature changes during testing, avoiding excessive constraint stresses to the product housing. The box body structure is a shell for realizing the function of environmental simulation. It comprises two side plates and a top plate. The side plates and the top plate ar