Welding fixing clamp for aero-engine pipeline

Abstract

The welding fixing clamp for the aero-engine pipeline comprises a bottom plate, a first positioning seat is arranged on the bottom plate, a second positioning seat is arranged at the position, behind the first positioning seat, of the bottom plate, a third positioning seat is arranged above the second positioning seat, and the third positioning seat is fixed to the bottom plate through a support. The support is located behind the second positioning seat, two positioning columns are arranged on the front side of the support in the length direction of the third positioning seat in a spaced mode, a first guide rail is arranged on the bottom plate and located on the left side of the second positioning seat, a first sliding block is arranged on the first guide rail and connected with the bottom plate through a first fixing seat, and an expansion sleeve mechanism is arranged on the first sliding block. The welding and fixing clamp for the aero-engine pipeline is suitable for an air manifold pipeline assembly with a complex structure, and a low-pressure turbine cooling air manifold can be rapidly and reliably welded and accurately positioned, so that it is guaranteed that the overall contour size after welding is not deformed or displaced to the maximum extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical field especially, relates to welding frock, and particularly is a kind of welding fixing clamp of aero-engine pipeline. BACKGROUND

[0002] The low-pressure turbine cooling manifold of CFM56 aero-engine is the complex welding 321 stainless steel component consisting of 12 cooling manifolds plus an inlet box, which is used to cool the low-pressure turbine module of the engine to avoid excessive temperature. Since it is easy to cause deformation damage during use, argon arc welding and brazing process are needed, but its shape is complex, and deformation is easy to occur during manufacturing and maintenance welding. The welding positioning fixture of the prior art is mostly general type, and cannot accurately position the complex air manifold before welding. The profile size of the welded air manifold cannot be guaranteed. SUMMARY

[0003] The utility model discloses a kind of welding fixing clamps of aero-engine pipeline, and the technical problem that the welding positioning fixture in prior art cannot accurately position the complex air manifold before welding is solved.

[0004] The utility model discloses a kind of welding fixing clamps of aero-engine pipeline, including bottom plate, first positioning seat is arranged on bottom plate, two first installation holes are arranged in the length direction of first positioning seat with interval, second positioning seat is arranged on bottom plate in the rear of first positioning seat, third positioning seat is arranged in the top of second positioning seat, third positioning seat is fixed on bottom plate by support, support is located in the rear of second positioning seat, two second installation holes are arranged in the length direction of third positioning seat with interval on the front side of third positioning seat, two positioning columns are arranged in the length direction of third positioning seat with interval on the front side of support, first guide rail is arranged on bottom plate in the left of second positioning seat, the length direction of first guide rail is inclined to the length direction of first positioning seat, first sliding block is arranged on first guide rail, expansion sleeve mechanism is arranged on first sliding block, second guide rail is arranged on bottom plate in the rear of first guide rail, the length direction of second guide rail is inclined to the length direction of first positioning seat, second sliding block is arranged on second guide rail, positioning block is arranged on second sliding block, arc-shaped positioning surface is arranged on the front side of positioning block.

[0005] Further, the second positioning seat is cylindrical.

[0006] Further, the left edge, rear edge and right edge of the bottom plate are respectively provided with an installation plate, and the upper ends of the three installation plates are connected by a fixed plate.

[0007] Further, the first slider is connected with the bottom plate through a first fixing seat and a screw, and the second slider is connected with the bottom plate through a second fixing seat and a screw.

[0008] Compared with the prior art, the effect of the utility model is positive and obvious. The welding fixing clamp for the pipeline of the aero-engine is suitable for the air manifold pipeline assembly of a complex configuration, can quickly and reliably weld and accurately position the low-pressure turbine cooling air manifold, and thus maximally guarantees that the overall profile size after welding does not deform and displace. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a first three-dimensional schematic view of the welding fixing clamp for the pipeline of the aero-engine.

[0010] Figure 2 It is a first use state schematic view of the welding fixing clamp for the pipeline of the aero-engine.

[0011] Figure 3 It is a second three-dimensional schematic view of the welding fixing clamp for the pipeline of the aero-engine.

[0012] Figure 4 It is a second use state schematic view of the welding fixing clamp for the pipeline of the aero-engine. DETAILED DESCRIPTION

[0013] The utility model is further described below in combination with embodiments, but the utility model is not limited to the embodiments, and any similar change of the utility model should be included in the protection scope of the utility model. The use of the directions of up, down, front, back, left, right, middle, inside and outside in the utility model is only for the convenience of clear description, and is not a limitation on the technical scheme of the utility model.

[0014] For example, Figures 1-4The utility model discloses an aeroengine pipeline's welding fixing clamp, including bottom plate 1, be provided with first locating seat 2 on bottom plate 1, two first mounting holes 3 are provided with on first locating seat 2 along its length direction interval, be provided with second locating seat 4 on bottom plate 1 in the rear of first locating seat 2, the top of second locating seat 4 is provided with third locating seat 5, and third locating seat 5 is fixed on bottom plate 1 through support 6, and support 6 is located in the rear of second locating seat 4, and the front side of third locating seat 5 is provided with two second mounting holes 7 along its length direction interval, and the front side of support 6 is provided with two locating columns 8 along the length direction interval of third locating seat 5, and first guide rail 9 is provided on bottom plate 1 in the left of second locating seat 4, and the length direction of first guide rail 9 is inclined to the length direction of first locating seat 2, and first guide rail 9 is provided with first sliding block 10, and first sliding block 10 is provided with expansion sleeve mechanism 19, and second guide rail 11 is provided on bottom plate 1 in the rear of first guide rail 9, and the length direction of second guide rail 11 is inclined to the length direction of first locating seat 2, and second guide rail 11 is provided with second sliding block 12, and second sliding block 12 is provided with locating block 13, and the front side of locating block 13 is provided with arc locating surface 14.

[0015] Further, the second locating seat 4 is cylindrical.

[0016] Further, the left edge, the rear edge and the right edge of the bottom plate 1 are respectively provided with an installation plate 15, and the upper ends of the three installation plates 15 are connected by a fixed plate 16.

[0017] Further, the first sliding block 10 is connected with the bottom plate 1 by a first fixing seat 22 and a screw, and the second sliding block 12 is connected with the bottom plate 1 by a second fixing seat 23 and a screw.

[0018] Specifically, the first guide rail 9, the expansion sleeve mechanism 19 and the second guide rail 11 in the embodiment all adopt the known scheme in the prior art, which is known to those skilled in the art and will not be described here.

[0019] The working principle of the embodiment is as follows:

[0020] When clamping, the lower end of the air inlet box body 17 is fixed by screws through the two side supports 20 and the two first mounting holes 3 on the first locating seat 2, the bottom of the air inlet box body 17 is in contact with the upper side of the second locating seat 4, the upper end of the air inlet box body 17 is fixed by the ear plate 21 and the two second mounting holes 7 on the third locating seat 5, the rear side of the air inlet box body 17 is in contact with the two locating columns 8 on the support 6, the air inlet flange hole 18 on the side of the air inlet box body 17 is positioned by the expansion sleeve mechanism 19, the expansion sleeve mechanism 19 extends into the air inlet flange hole 18 and is in contact with the inner wall to expand it tightly, and the rear side of the air inlet flange of the air inlet box body 17 is in contact with the arc locating surface 14 on the locating block 13.

[0021] The first fixing seat 22 and the second fixing seat 23 respectively fix the positions of the first sliding block 10 and the second sliding block 12. Specifically, when clamping the air manifold, after the first sliding block 10 and the second sliding block 12 are moved to appropriate positions, the positions of the first sliding block 10 and the second sliding block 12 are fixed through the first fixing seat 22 and the second fixing seat 23 respectively, threaded holes are set on the bottom plate 1, and the first fixing seat 22 and the second fixing seat 23 are fixed by screws. If the sliding blocks need to be moved to other positions, holes are re-punched on the bottom plate and connected with the fixing seats.

[0022] The welding fixing clamp for the pipeline of the aero-engine is suitable for the air manifold pipeline assembly with a complex configuration, can perform quick and reliable welding and accurate positioning on the low-pressure turbine cooling air manifold, and thus maximally guarantees that the overall contour size after welding does not deform and displace.

Claims

1. A welded fixture for holding an aircraft engine conduit, comprising: The application relates to a positioning device, which comprises a bottom plate, a first positioning seat arranged on the bottom plate, two first mounting holes arranged on the first positioning seat along the length direction of the first positioning seat, a second positioning seat arranged on the bottom plate behind the first positioning seat, a third positioning seat arranged above the second positioning seat, a support for fixing the third positioning seat on the bottom plate, the support being located behind the second positioning seat, two second mounting holes arranged on the front side of the third positioning seat along the length direction of the third positioning seat, two positioning columns arranged on the front side of the support along the length direction of the third positioning seat, a first guide rail arranged on the left side of the second positioning seat on the bottom plate, the length direction of the first guide rail being inclined to the length direction of the first positioning seat, a first sliding block arranged on the first guide rail, an expansion sleeve mechanism arranged on the first sliding block, a second guide rail arranged on the rear side of the first guide rail on the bottom plate, the length direction of the second guide rail being inclined to the length direction of the first positioning seat, a second sliding block arranged on the second guide rail, and a positioning block arranged on the second sliding block, the front side of the positioning block being provided with an arc-shaped positioning surface.

2. An aircraft engine tubing welding fixture as set forth in claim 1 further characterized by, The second positioning seat is cylindrical.

3. The welding fixture for a turbine airfoil of claim 1, wherein: Left, rear and right side edges of the bottom plate are respectively provided with one mounting plate, and the upper ends of the three mounting plates are connected through a fixing plate.

4. The welding fixture for securing an aircraft engine conduit of claim 1, wherein, The first sliding block is connected with the bottom plate through a first fixing seat and a screw, and the second sliding block is connected with the bottom plate through a second fixing seat and a screw.

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