CN205057396U

CN205057396U - Prevent that sphere bush that welds off -load chamber pipe warp anchor clamps

Info

Publication number: CN205057396U
Application number: CN201520831327.3U
Authority: CN
Inventors: 何宇
Original assignee: AVIC GUIZHOU AVIATION POWER Co Ltd
Current assignee: China Hangfa Guizhou aero engine maintenance limited liability company
Priority date: 2015-10-26
Filing date: 2015-10-26
Publication date: 2016-03-02
Anticipated expiration: 2025-10-26

Abstract

The utility model provides a prevent that sphere bush that welds off -load chamber pipe warp anchor clamps, includes bracing piece, locating piece, expansion loop, fastening nut, steady rest, the locating piece is located on the bracing piece, the expansion loop is located in the bracing piece toper section, the steady rest passes through fastening nut and links to each other with the bracing piece. The utility model discloses ring sum bracing piece outer end is all designed to the toper structure in the expansion loop established, and the expansion loop can adjust through the bracing piece according to the size of sphere bush internal diameter, has guaranteed the cylindricity tolerance of sphere bush internal diameter, prevents to be out of shape because of welding high temperature leads to the fact the sphere bush.

Description

A kind of spherical bushing deformation fixture preventing welding unloading cavity conduit

Technical field

The utility model relates to a kind of spherical bushing deformation fixture preventing from welding unloading cavity conduit.

Background technology

During aero-engine work, due to the outlet of every grade of compressor rotor and the pressure differential effect of import, make compressor rotor be subject to very large responsive to axial force forward on middle (center) bearing, be easy to make middle (center) bearing accelerated wear test, inefficacy, cause quality accident.In order to reduce the axial load of middle (center) bearing, after compressor, devise the unloading cavity directly communicated with air, make compressor rotor be subject to an axial force backward, it is one of the most effective reducing pressure that the axial force that middle (center) bearing is born reduces to less numerical value.And the spherical bushing of unloading cavity conduit directly has influence on the important spare part regulating unloading cavity pressure, because spherical bushing is thin-walled parts, during welding, be easy to high temperature deformation, cause and scrap.Spherical bushing deflection senior general directly has influence on the regulating effect of unloading cavity pressure.Prior art is direct correction of spherical lining after welding, because spherical bushing part is very little, is not easy to very much welding post-equalization and returns to specified states, be easy to cause distortion simultaneously at timing, crackle scraps.

Utility model content

The purpose of this utility model is to overcome deficiency of the prior art, thus provides a kind of spherical bushing deformation fixture preventing from welding unloading cavity conduit.

Prevent the spherical bushing deformation fixture welding unloading cavity conduit, comprise support bar, locating piece, expansion loop, clamp nut, steady rest, described locating piece is located on support bar; Described expansion loop is located on support bar conical section; Described steady rest is connected with support bar by clamp nut.

The beneficial effect of employing technique scheme is:

Expansion loop inner ring set by the utility model and support bar outer end are all designed to pyramidal structure, and expansion loop can be adjusted by support bar according to the size of spherical bushing internal diameter, ensure that the cylindricity tolerance of spherical bushing internal diameter, prevent because welding high temperature causes spherical bushing to be out of shape.

Accompanying drawing explanation

Fig. 1 is the spherical bushing deformation fixture structural representation that the utility model prevents from welding unloading cavity conduit.

In figure: 1-support bar, 2-locating piece, 3-expansion loop, 4-clamp nut, 5-steady rest.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Prevent the spherical bushing deformation fixture welding unloading cavity conduit, as shown in Figure 1, it comprises support bar 1, locating piece 2, expansion loop 3, clamp nut 4, steady rest 5, and described locating piece 2 is located on support bar 1; Described expansion loop 3 is located on support bar 1 conical section; Described steady rest 5 is connected with support bar 1 by clamp nut 4.

The utility model assembly method:

1. locating piece 2 is contained on support bar 1;

2. expansion loop 3 is contained on support bar 1 conical section;

3. expansion loop 3 is loaded in the aero-engine unloading cavity spherical bushing of needs welding;

4. support bar one end vice is gripped, tighten clamp nut 4, and be contained on steady rest 5, welding aero-engine unloading cavity spherical bushing;

5. unscrew clamp nut 4 after cooling, the aero-engine unloading cavity spherical bushing taking out expansion loop 3 and welded.

Claims

1. one kind prevents the spherical bushing deformation fixture welding unloading cavity conduit, it is characterized in that: it comprises support bar (1), locating piece (2), expansion loop (3), clamp nut (4), steady rest (5), described locating piece (2) is located on support bar (1); Described expansion loop (3) is located on support bar (1) conical section; Described steady rest (5) is connected with support bar (1) by clamp nut (4).