CN105156790A - Engine and air inlet channel connection device - Google Patents

Abstract

A connection device between an engine and an air inlet, which relates to the design technology of the aircraft floor structure, and is used for strengthening the connection between the air inlet and the engine. The connection device between the engine and the air inlet has a symmetrical structure, and the cassette a and the cassette b have the same structure and are connected at one end There is a rotary bolt, and the other end is connected with a sleeve. The rotary bolt on cassette a is connected to the sleeve on cassette b and the sleeve on cassette a is connected to the rotary bolt on cassette b to form a closed loop structure. The rotary bolt and the sleeve pass through The lock nut is fixedly connected, a washer is arranged between the self-lock nut and the casing, and multiple sections of clip slots are arranged on the same side of the cassette a and cassette b. The connecting device between the engine and the air inlet provided by the invention has the advantages of simple structure, convenient assembly and disassembly, small occupied space, high device stability, safety and reliability.

Description

A connection device between an engine and an air intake

technical field

The invention relates to the technical field of aircraft structure design, in particular to a connection device between an engine and an air intake, which is used for strengthening the connection between an aircraft air intake and an engine.

Background technique

In the process of aircraft design and manufacturing, the connection between the air inlet and the engine is an important link to ensure the normal function of the engine. Only reliable connection can ensure the normal operation of the engine. The shape is complex and coordinated, and the connection between the intake port and the engine is also the difficulty and key point of design and manufacture.

The traditional engine is bolted to the intake port flange, which takes time and effort to disassemble. Especially for complex air intakes installed in narrow spaces. The problem that needs to be solved urgently now is how to go out a kind of light and reliable connecting device of engine and air inlet to overcome the difficult problem that aircraft air inlet and engine connecting device are not easy to install and disassemble.

Contents of the invention

The object of the present invention is to solve the above-mentioned shortcomings in the prior art, and provide a connection device between an engine and an air intake with a simple and reasonable structure, easy disassembly and assembly, and a small footprint.

The purpose of the present invention is achieved through the following technical solutions: a connecting device between an engine and an air intake, which is used for the connection between an air intake of an aircraft and an engine, and is characterized in that: the connecting device between the engine and an air intake is a symmetrical structure, Including cassette a, cassette b, and card slot, wherein, cassette a and cassette b have the same structure, one end is connected with a rotary bolt, and the other end is connected with a sleeve, the rotary bolt on cassette a is connected to the sleeve on cassette b and the cassette a is connected The bushing is connected to the rotary bolt on cassette b to form a closed-loop circuit structure. The rotary bolt and the casing are fixedly connected by a self-locking nut. A washer is arranged between the self-locking nut and the casing. There are multiple clips on the same side of cassette a and cassette b. groove.

In the above solution, preferably, the cassette a, the cassette b and the slot are fixedly connected by spot welding.

Preferably, in any of the above schemes, the clamping groove is a V-shaped groove structure, and the flange of the aircraft air inlet and the flange of the aircraft engine are attached and fixedly connected and locked by the clamping groove.

The beneficial effect of the connection device between the engine and the air intake provided by the present invention is that it has a simple structure, does not enter the engine and damage the engine blades, is small in weight, takes up little space, and is easy to disassemble. The blue plate is fastened through the connection device between the engine and the air intake provided by the invention, so as to ensure the normal operation of the engine.

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment of the connecting device between the engine and the air inlet according to the present invention;

Fig. 2 is a schematic structural view of another preferred embodiment of the connecting device between the engine and the air inlet according to the present invention;

Reference signs:

1, 2, 4, 6 are draw-in slots, 3 is cassette a, 5 is cassette b, 7 is a rotary bolt, 8 is a sleeve, 9 is a washer, and 10 is a self-locking nut.

Detailed ways

In order to better understand the connection device between the engine and the intake port according to the solution of the present invention, the preferred embodiments of the connection device between the engine and the intake port of the present invention will be further described below in conjunction with the accompanying drawings.

Example 1:

As shown in Figure 1, the preferred embodiment of the engine and air inlet connection device provided by the present invention is used to fasten the connection between the aircraft air inlet and the engine, and is designed into a triangular shape according to the shape of the aircraft air inlet and the engine interface and is Symmetrical structure (the structure of all parts is not marked below, only half of the structure is described), including card slot 1, card slot 2, card slot 4, card slot 6, cassette a3, cassette b5, rotary bolt 7, sleeve 8. A washer 9 and a self-locking nut 10, wherein the cassette a3 has the same structure as the cassette b5, with a rotary bolt 7 connected to one end and a sleeve 8 connected to the other end. The rotary bolt 7 on the cassette a3 is connected to the sleeve 8 on the cassette b5, and the rotary bolt 7 on the cassette b5 is also connected to the sleeve 8 on the cassette a3. The rotary bolt 7 is mated with the casing 8 and locked by the self-locking nut 10 , and a washer 9 is arranged between the self-locking nut 10 and the casing 8 . Card slot 1 and card slot 4 are straight card slots, card slot 2 and card slot 6 are curved card slots. The card slot 1 and the card slot 2 are fixedly connected with the cassette a3, the card slot 4 and the card slot 6 are fixedly connected with the cassette b5, and the card slot and the cassette are fixedly connected by spot welding. Card slot 1, card slot 2, card slot 4, and card slot 6 are V-shaped card slots. When connecting the aircraft air inlet to the engine, connect the air inlet to the flange at the engine connection and pass through the V-shaped card slot. Snap it together.

In the specific use process, the intake duct is pushed to the bottom of the engine through the bracket, and then the flange plate at the connection between the intake duct and the engine is clamped by the assembled slot with a cassette, and then tightened and turned with the bolt 7 Cooperating self-locking nut 10, fixed force with constant force wrench and marks the mark line that nut is tightened, has so just finished adopting engine of the present invention and the preferred embodiment of air inlet connecting device to be used for connecting aircraft air inlet and engine.

Example 2:

Referring to the connecting device between the engine and the air intake provided in Embodiment 1, the difference is that the connecting device between the engine and the air intake provided in this embodiment is circular in shape, and all the slots are curved slots .

The above has been described in detail in conjunction with the specific embodiments of the connecting device between the engine and the intake port of the present invention, but it is not a limitation of the present invention. Any simple modification made to the above embodiments according to the technical essence of the present invention belongs to the present invention. Technical scope, it should also be noted that the scope of the technical solution of the connection device between the engine and the intake port according to the present invention includes any combination of the above-mentioned parts.

Claims (3)

1. a motor and intake duct connection set, for the connection between airplane intake and motor, it is characterized in that: described motor and intake duct connection set are symplex structure, comprise cassette tape a (3), cassette tape b (5), draw-in groove, wherein, cassette tape a (3) is identical with cassette tape b (5) structure, one end is connected with revolution bolt (7), the other end is connected with sleeve pipe (8), revolution bolt (7) on cassette tape a (3) connects the sleeve pipe (8) on cassette tape b (5) and the revolution bolt (7) that the sleeve pipe (8) on cassette tape a (3) connects on cassette tape b (5) becomes closed loop configuration, revolution bolt (7) is fixedly connected with by self-locking nut (10) with sleeve pipe (8), packing ring (9) is provided with between self-locking nut (10) and sleeve pipe (8), cassette tape a (3), cassette tape b (5) homonymy is provided with multistage draw-in groove.

2. motor as claimed in claim 1 and intake duct connection set, is characterized in that: described cassette tape a (3), described cassette tape b (5) are fixedly connected with by spot welding with draw-in groove.

3. motor as claimed in claim 1 and intake duct connection set, is characterized in that: draw-in groove is V-type groove structure, and airplane intake flange plate is fitted with airplane engine flange plate and is fixedly connected with and blocked by draw-in groove.