CN112096461B

CN112096461B - Connection structure and split casing structure thereof

Info

Publication number: CN112096461B
Application number: CN202010969858.4A
Authority: CN
Inventors: 杨勇刚; 董阳; 司艳丽
Original assignee: AECC Shenyang Engine Research Institute
Current assignee: AECC Shenyang Engine Research Institute
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2022-07-15
Anticipated expiration: 2040-09-15
Also published as: CN112096461A

Abstract

The application belongs to the technical field of engine split casing connection design, and particularly relates to a connection structure, which comprises: the first connecting edge is provided with a plurality of strip-shaped holes in an arrayed manner; a second connected edge on which a plurality of second protrusions are arranged; each second protrusion is provided with a second bending part; each second bending part correspondingly penetrates through one strip-shaped hole; and the clamping strip is inserted between each second bending part and the first connecting edge. Furthermore, it relates to a split case structure comprising: two semi-annular casings; two foretell connection structure, every connection structure's first connection limit, second connection limit are connected respectively on two semi-annular casings to realize the butt joint between two semi-annular casings.

Description

Connection structure and split casing structure thereof

Technical Field

The application belongs to the technical field of engine split casing connection design, and particularly relates to a connection structure and a split casing structure thereof.

Background

The engine casing is usually provided with various components such as an inner ring, a support plate, a rotor blade, a stator blade and the like, and in order to facilitate assembly among the components, the engine casing is designed to be of a split structure, namely the engine casing is formed by butt joint of two semi-annular engine casings.

At present, set up the connection limit at two semi-ring casing outer walls more, connect the limit through the bolt to this, make two semi-ring casings connect as a whole, realize the butt joint between two semi-ring casings, constitute a whole ring casing, this kind of technical scheme has following defect:

1) a large number of bolts are needed to connect the connecting edges, the process is complex, and time and labor are consumed;

2) under certain specific scenes, the outer wall of the casing is required to be smooth, and the existence of the connecting edge is difficult to meet the requirement.

The present application has been made in view of the above-mentioned technical drawbacks.

It should be noted that the above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application without explicit evidence to suggest that the above content is already disclosed at the filing date of the present patent application.

Disclosure of Invention

It is an object of the present application to provide a connection structure and a split case structure thereof to overcome or alleviate at least one of the technical drawbacks of the known prior art.

The technical scheme of the application is as follows:

one aspect provides a connection structure including:

the first connecting edge is provided with a plurality of strip-shaped holes in an arrangement manner;

a second connected edge on which a plurality of second protrusions are arranged; each second protrusion is provided with a second bending part; each second bending part correspondingly penetrates through one strip-shaped hole;

and the clamping strip is inserted between each second bending part and the first connecting edge.

According to at least one embodiment of the present application, in the above-mentioned connecting structure, the first connecting edge has a first protrusion thereon; the first bulge is provided with a first bending part; a plurality of limiting holes are arranged on the first bending part;

each second bending part correspondingly extends into one limiting hole.

According to at least one embodiment of the present application, in the above-mentioned connecting structure, a plurality of bayonets are arranged on the card strip; each bayonet is correspondingly clamped on one second protrusion.

According to at least one embodiment of the present application, in the above-mentioned connecting structure, one side of each bayonet is provided with a chamfer.

According to at least one embodiment of the present application, in the above-described connecting structure, an angle of each chamfer is within 15 ° to 30 °.

According to at least one embodiment of the present application, in the above connection structure, one end of the clip strip is bent.

Another aspect provides a split case structure comprising:

two semi-annular casings;

two arbitrary foretell connection structure, first connection limit, the second connection limit of every connection structure are connected respectively on two semi-annular casings to realize the butt joint between two semi-annular casings.

According to at least one embodiment of the present application, the split casing structure described above has two connecting structures located inside the two semi-annular casings.

According to at least one embodiment of the present application, in the split casing structure, the first connecting edge and the second connecting edge of the connecting structure are respectively formed on the two semi-annular casings.

Drawings

FIG. 1 is a schematic diagram of a connection structure provided by an embodiment of the present application;

FIG. 2 is a schematic view of a first connecting edge provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a second connecting edge provided by an embodiment of the present application;

FIG. 4 is a schematic view of a card strip provided by an embodiment of the application;

FIG. 5 is a schematic view of a first connecting edge engaged with a clip strip according to an embodiment of the present disclosure;

wherein:

1-a first connecting edge; 2-a second connecting edge; 3-clamping strips.

For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; further, the drawings are for illustrative purposes, and terms describing positional relationships are limited to illustrative illustrations only and are not to be construed as limiting the patent.

Detailed Description

In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further clearly and completely described in the following detailed description with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used for explaining the present application, but not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, other related parts may refer to general designs, and the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment without conflict.

In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that devices or elements must have specific orientations, be constructed and operated in specific orientations, and that when the absolute position of an object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the description of the application should not be construed as an absolute limitation of quantity, but rather as the presence of at least one. The use of "including" or "comprising" and the like in the description of the present application is intended to mean that the elements or items listed before that word or item and their equivalents, while excluding other elements or items, are included in the list of elements or items listed after that word or item.

Further, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and the like as used in the description of the present application are to be construed broadly, e.g., the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.

The present application is described in further detail below with reference to fig. 1 to 5.

One aspect provides a connection structure including:

the first connecting edge 1 is provided with a plurality of strip-shaped holes in an arrayed manner;

a second connected edge 2 on which a plurality of second projections are arranged; each second protrusion is provided with a second bending part; each second bending part correspondingly penetrates through one strip-shaped hole;

and the clamping strips 3 are inserted between the second bending parts and the first connecting edges 1.

For the connection structure disclosed in the above embodiments, it can be understood by those skilled in the art that the clip strip 3 is designed to be inserted between each second bending portion and the first connection edge 1, so as to prevent the second bending portion from coming out of the corresponding strip-shaped hole, and thus connect the first connection edge 1 and the second connection edge 2 together.

With regard to the connection structure disclosed in the above embodiments, it will be further understood by those skilled in the art that the first connection edge 1 and the second connection edge 2 may be connected to two half-ring casings respectively, so as to realize the butt joint between the two half-ring casings, so that the two half-ring casings are integrated into a whole to form a whole ring.

To the connection structure disclosed in the above embodiment, it can be understood by those skilled in the art that when the connection structure is used to realize the butt joint between two semi-annular casings, only the bending portions on the second connection edge 2 need to pass through the corresponding strip-shaped holes on the first connection edge 1, and the clip strip 3 needs to be inserted between the second bending portions and the first connection edge 1, so that the connection structure is fast and convenient, and has a simple structure and compact components.

In some optional embodiments, in the above-mentioned connecting structure, the first connecting edge 1 has a first protrusion thereon; the first bulge is provided with a first bending part; a plurality of limiting holes are arranged on the first bending part;

each second bending part correspondingly extends into one limiting hole.

In some optional embodiments, in the above-mentioned connection structure, a plurality of bayonets are arranged on the card strip 3; each bayonet is correspondingly clamped on one second protrusion to avoid displacement.

In some alternative embodiments, in the above-mentioned connection structure, one side of each bayonet is provided with a chamfer for guiding assembly.

In some alternative embodiments, the angle of each chamfer is within 15 ° to 30 °, and may be specifically 18.4 °, as shown in fig. 4.

In some alternative embodiments, in the above-mentioned connection structure, one end of the clamping strip is bent to form a limiting portion, so as to prevent the position of the clamping strip 3 from exceeding the limit when the clamping strip is inserted between each second bent portion and the first connecting edge 1.

Another aspect provides a split case structure comprising:

two semi-annular casings;

two arbitrary foretell connection structure, first connection limit 1, the second connection limit 2 of every connection structure connect respectively on two semi-annular casings to realize the butt joint between two semi-annular casings.

For the split casing structure disclosed in the above embodiment, it can be understood by those skilled in the art that the butt joint between the two half-ring casings is realized through the connecting structure disclosed in the above embodiment, which is fast and convenient.

In some alternative embodiments, the split case structure is configured such that the two connecting structures are located inside the two semi-annular cases.

For the split casing structure disclosed in the above embodiments, it can be understood by those skilled in the art that the connecting structure is disposed inside the split casing structure, so as to protect the outer wall of the casing and keep the outer wall of the casing smooth, thereby meeting the requirements in specific situations.

In some alternative embodiments, in the above-mentioned split casing structure, the first connecting edge 1 and the second connecting edge 2 of the connecting structure are respectively formed on the two semi-annular casings, i.e. integrally formed.

For the split casing structure disclosed in the above embodiments, as can be understood by those skilled in the art, the butt joint between the two half-ring casings is realized through the connection structure, and the specific process can be implemented by referring to the following steps:

inserting the clamping strip 3 in each connecting structure between the first connecting edge and the first bending part, and leaking the bent end to the outside;

enabling the two semi-annular casings to approach, and enabling each bending part on the second connecting edge 2 in each connecting structure to penetrate through the corresponding strip-shaped hole on the first connecting edge 1;

one bent end of each clamping strip 3 is knocked, so that each clamping strip 3 moves to a position between each corresponding second bent part and the first connecting edge 1, and the upper bayonet is opened on the corresponding second protrusion.

To the half casing structure disclosed in the above embodiment, it can be understood by those skilled in the art that, in the butt joint process between the two half casing through the connection structure, the connection of the first connection edge 1 and the second connection edge 2 in the two connection structures can be realized only by knocking one end of each clip strip 3 exposed outside and bent when the two half casing are in butt joint, and then the butt joint of the two half casing is realized, so that the two half casing structures become a whole, and a whole ring is formed, which is fast, convenient, easy to operate and convenient to implement.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

Having thus described the present application in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.

Claims

1. A connecting structure, characterized by comprising:

a first connecting edge (1) on which a plurality of strip-shaped holes are arranged; the first connecting edge (1) is provided with a first bulge; the first protrusion is provided with a first bending part; a plurality of limiting holes are arranged on the first bending part;

a second connected edge (2) on which a plurality of second protrusions are arranged; each second protrusion is provided with a second bending part; each second bending part correspondingly penetrates through one strip-shaped hole;

the clamping strips (3) are inserted between the second bending parts and the first connecting edges (1); each second bending part correspondingly extends into one limiting hole.

2. The connection structure according to claim 1,

a plurality of bayonets are arranged on the clamping strip (3); each bayonet is correspondingly clamped on one second protrusion.

3. The connection structure according to claim 2,

a chamfer is formed on one side of each bayonet.

4. The connection structure according to claim 3,

the angle of each chamfer is within 15-30 degrees.

5. The connection structure according to claim 1,

one end of the clamping strip is bent.

6. A split case structure, comprising:

two semi-annular casings;

two connection structures according to any one of claims 1 to 5, wherein the first connection edge (1) and the second connection edge (2) of each connection structure are respectively connected to the two half-ring casings so as to realize butt joint between the two half-ring casings.

7. The split case structure according to claim 6,

the two connecting structures are positioned on the inner sides of the two semi-annular casings.

8. The split case structure according to claim 6,

and a first connecting edge (1) and a second connecting edge (2) of the connecting structure are respectively formed on the two semi-annular casings.