CN113697581B

CN113697581B - Method for stripping blade or wing leading edge heating assembly

Info

Publication number: CN113697581B
Application number: CN202110654959.7A
Authority: CN
Inventors: 熊烺录; 余坤; 刘春梅; 范智磊; 程翔; 高宁波; 陈正生
Original assignee: Jiangxi Changhe Aviation Industries Co Ltd
Current assignee: Jiangxi Changhe Aviation Industries Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2023-02-28
Anticipated expiration: 2041-06-11
Also published as: CN113697581A

Abstract

The invention belongs to the field of aircraft maintenance, and particularly relates to a method for stripping a blade or wing leading edge heating assembly. When the heating assembly needs to be replaced, the heating assembly is stripped in a mode that a cutting machine is matched with a water pump clamp, so that the blade skin is easily damaged, and the stripping work is high in labor intensity and low in efficiency. The invention adopts a special stripping tool which comprises a socket spanner and a clamping head, wherein one end of a rod part of the clamping head is provided with an open slot, and the other end of the rod part is provided with an outer hexagon connected with the socket spanner. The heating assembly adopts a roller stripping mode driven by a lever, so that the blade body is prevented from being damaged by stripping of the heating assembly, and the technical development of stripping of the heating assembly is promoted.

Description

Method for stripping blade or wing leading edge heating assembly

Technical Field

The invention belongs to the field of aircraft maintenance, and particularly relates to a method for stripping a blade or wing leading edge heating assembly, which is used for a composite blade or wing with an anti-icing and anti-icing function.

Background

The main blade made of a certain composite material adopts an anti-icing design, and the heating component and the blade body are assembled by adopting a secondary gluing process. The heating component is coated on the front edge of the blade or the wing, has a complex structure, sequentially comprises a stainless steel layer, a rubber layer, a heating element layer and a rubber layer from outside to inside, and is formed by bonding through an adhesive. The heating element has a total thickness of only 2.5mm and a length greater than 6000mm. The heating assembly is characterized by strong bonding force, large plastic deformation and low structural strength, thereby causing large stripping difficulty of the heating assembly. When the service life of the heating assembly expires or the heating assembly needs to be replaced due to the use failure of an external factory, the heating assembly is peeled mainly in a mode that a cutting machine is matched with a water pump clamp, and the peeling method easily causes damage to blade skin, so that the blades are scrapped and huge economic loss is caused. Meanwhile, the stripping work has high labor intensity and low efficiency, only one piece of the strip can be stripped every week, and the replacement progress of the heating assembly is severely restricted. A new heating assembly peeling method is urgently needed to improve the peeling quality of the heating assembly.

Disclosure of Invention

The purpose of the invention is as follows: the method for peeling the heating assembly on the front edge of the blade or the wing solves the technical problem of peeling the heating assembly, and improves the peeling quality of the heating assembly.

The technical scheme of the invention is as follows: a method for stripping a heating assembly at the front edge of a blade or a wing comprises an iron-clad layer, an outer rubber layer, a heating element layer and an inner rubber layer which are sequentially arranged from outside to inside and are bonded by an adhesive, a special stripping tool is adopted in the stripping method, the stripping tool comprises a socket wrench and a clamping head, one end of the rod part of the clamping head is provided with an open slot, the other end of the clamping head is provided with an outer hexagon connected with the socket wrench, and the stripping method comprises two stages:

s1, stripping of iron-clad layer

S1.1, cutting along the front edge of a blade or a wing, and dividing a clad iron into an upper layer and a lower layer;

s1.2, stripping an iron-coated separation section with the length of about 20mm from the end of the iron coating;

s1.3, clamping the iron clad separating section by using an open slot of a clamping head;

s1.4, completely stripping the clad iron by rotating a socket wrench;

s2, peeling of outer rubber layer, heating element layer and inner rubber layer

S2.1, cutting along the front edge of the blade or the wing, and dividing the residual materials into an upper layer and a lower layer;

s2.2, stripping an excess layer separation section with the length of about 20mm from the end of the excess layer material;

s2.3, clamping the remaining layer separation section by using an open slot of a clamping head;

s2.4, timely stripping the inner rubber layer by using a knife in an auxiliary manner, and completely stripping the rest layer material by rotating the socket wrench.

Advantageously, the stripping tool is a 22mm diameter iron rod with an open slot at one end of the rod having a width of 2mm, the depth of the open slot being 150mm.

Advantageously, the cut is made using a pneumatic cutter along the leading edge of the blade or wing, dividing the ladles into two.

Advantageously, the outer rubber layer, the heating element layer and the inner rubber layer of the leading edge are removed using a scraper knife.

Advantageously, the ladle iron ends are stripped using water pump pliers.

Advantageously, the remaining layer material is stripped using water pump pliers.

Advantageously, the socket wrench is a one-way wrench.

Advantageously, the socket wrench is angled at an angle of 80-100 ° to the gripping head.

The invention has the beneficial effects that: the heating assembly adopts a roller stripping mode driven by a lever, so that the blade body is prevented from being damaged by stripping of the heating assembly, and the technical development of stripping of the heating assembly is promoted.

Drawings

The illustrative examples, as well as a preferred mode of use, further objectives, and descriptions thereof, will best be understood by reference to the following detailed description of an example of the present invention when read in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic view of a peeling method of the present invention;

FIG. 2 is a schematic view of the chuck head.

Wherein, 1-socket spanner, 2-clamping head, 3-heating component, 4-paddle, 5-rod part, 6-open slot, 7-external hexagon

Detailed Description

The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. Indeed, many different examples may be described and should not be construed as limited to the examples set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Referring to fig. 1 and 2, taking a blade as an example,

stripping of iron clad layers

1. The clad iron layer 3 is cut off along the front edge of the blade 4 by using a pneumatic cutting machine, and the clad iron layer 3 is divided into an upper layer and a lower layer. The cutting process is controlled by paying attention to the cutting depth, so that the best effect is achieved by cutting off the iron-clad layer 3 or generating the scorched smell of rubber;

2. stripping the end of the ladle iron by using a water pump clamp, wherein the length of the stripped end of the ladle iron is about 20mm, and the stripped end is used as a clamping end of a rear stripping tool;

3. the stripping tool is made of hard iron, the rod part 5 is a rod with the diameter of 22mm, the total length is 250mm, one end of the rod part 5 is provided with an open slot 6 (see figure 2), the open slot is positioned in the center of the iron rod, the width is 2mm, and the depth is about 150mm. The other end of the rod part 5 is an external hexagon 7 (see fig. 2), and the length is about 20mm;

4. a stripping tool open slot 6 clamps the clamping end of the clad iron, and the other end of the open slot is connected with a socket wrench 1 (see figure 1) through a hexagon 7;

5. the complete stripping of the iron clad 3 is performed by rotating the handle of the socket wrench 1 back and forth so that the stripping tool assumes a barrel-type stripping form.

The outer rubber layer, the heating element layer and the inner rubber layer are peeled off

1. And (4) shoveling the residual layer of the heating assembly along the front edge of the blade by using a shovel blade, and dividing the residual material into an upper layer and a lower layer. The process of removing the residual layer materials is careful to control the depth and the angle of the scraper knife, and the blade body is not damaged as far as possible.

2. Stripping the end of the residual layer material by using a water pump clamp to obtain a material with the length of about 20mm, and using the material as a clamping end of a rear stripping tool;

3. the opening groove 6 of the stripping tool clamps the residual materials, and the outer hexagon 7 at the other end of the opening groove is connected with the socket wrench 1;

4. the stripping tool is in a roller type stripping form by rotating the handle of the socket wrench 1 in a reciprocating manner, and the rubber layer is easy to break during stripping due to the lower toughness of the rubber layer, so that a knife is needed to assist in stripping the rubber;

5. and (4) cleaning the residual rubber layer on the stripping surface of the blade by using a polishing sand disc.

Different examples of the systems, devices, and methods disclosed herein include various components, features, and functions. It should be understood that the various examples of the systems, devices, and methods disclosed herein may include any of the components, features, and functions of any of the other examples of the systems, devices, and methods disclosed herein in any combination or sub-combination, and all such possibilities are intended to fall within the scope of the present invention.

The description of the different advantageous arrangements has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the examples in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Additionally, the different advantageous examples may describe different advantages as compared to other advantageous examples. The example or examples selected are chosen and described in order to best explain the principles of the examples, the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various examples with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a paddle or wing leading edge heating element's peeling method, this heating element (3) outside-in includes packet iron layer, outer rubber layer, heating element layer and inner rubber layer in proper order, all forms through the adhesive bonding, its characterized in that: the stripping method adopts a special stripping tool which comprises a socket wrench (1) and a clamping head (2), wherein the clamping head (2) is provided with an open slot (6) at one end of a rod part (5) of the clamping head and an outer hexagon (7) connected with the socket wrench (1) at the other end, and the stripping method comprises two stages:

s1, stripping of iron-clad layer

S1.1, cutting along the blade (4) or the front edge of the wing, and dividing the clad iron into an upper layer and a lower layer;

s1.3, clamping the iron-clad separation section by using an open slot of a clamping head (2);

s1.4, completely stripping the iron cladding by rotating the socket wrench (1);

s2, peeling of outer rubber layer, heating element layer and inner rubber layer

s2.3, clamping the remaining layer separation section by using an open slot of the clamping head (2);

s2.4, timely stripping the inner rubber layer by using a knife in an auxiliary manner, and completely stripping the rest layer material by rotating the socket wrench (1).

2. The peeling method according to claim 1, characterized in that: the stripping tool is an iron rod with the diameter of 22mm, one end of the iron rod is provided with an open slot (6) with the width of 2mm, and the depth of the open slot (6) is 150mm.

3. The peeling method according to claim 1, characterized in that: and cutting along the front edge of the blade or the wing by using a pneumatic cutting machine to cut off, and dividing the clad iron into two parts.

4. The peeling method according to claim 1, characterized in that: the outer rubber layer, the heating element layer and the inner rubber layer of the leading edge are shoveled away using a shovel blade.

5. The peeling method according to claim 1, characterized in that: stripping the end of the clad iron by using water pump pliers.

6. The peeling method according to claim 1, characterized in that: and stripping the residual layer material by adopting water pump pliers.

7. The peeling method according to claim 1, characterized in that: the socket wrench (1) adopts a one-way wrench.

8. The peeling method according to claim 1, characterized in that: the included angle between the socket wrench (1) and the clamping head (2) is 80-100 degrees.