Cabin sleeving structure with cleaning rod

Abstract

The cabin section sleeving structure with the cleaning rod comprises the cleaning rod, a cleaning rod hole, a locknut, a cabin section inner sleeve face and a cabin section outer sleeve face, the cleaning rod is in clearance fit with the cleaning rod hole penetrating through the front end face and the rear end face of a cabin section, and the cabin section inner sleeve face and the cabin section outer sleeve face are in sleeving fit. The head and the tail of the cleaning rod are provided with external threads, the cabin sections are fastened through the external threads of the cleaning rod and the locknuts, and the front cabin section and the rear cabin section are pressed tightly. And the cabin sections are fastened through threads at the head part and the tail part of the cleaning rod and various forms of devices. The cabin section inner through strip penetrates through the through holes of the front and rear cabin sections; the front and rear end surface inner sleeve / outer sleeve surface structure can play a role in maintaining the shape before the cabin sections are fastened, so that the cabin sections are prevented from scattering everywhere; the end face of the cabin section is further provided with a scribed line and a positioning pin used for assembling and positioning. The structure is suitable for fastening connection of non-metal and metal cabin sections.

Description

Technical Field

[0001] This utility model relates to the field of aircraft cabin assembly technology, specifically to a cabin segment connection structure with a through bar. Background Technology

[0002] As the requirements for lightweight aircraft become increasingly stringent, more and more aircraft are beginning to adopt non-metallic compartments. Most non-metallic compartments have lower material strength than metallic compartments. If the connection methods commonly used for metallic compartments (such as socket joints, disc joints, wedge joints, etc.) are still used, the reliability of the connection will be greatly reduced. Therefore, there is an urgent need for a connection structure suitable for fastening non-metallic compartments. Summary of the Invention

[0003] The purpose of this utility model is...

[0004] This invention proposes a compartment sleeve structure with a through bar to improve the connection reliability of non-metallic compartments with lower strength.

[0005] Technical solution of this utility model

[0006] A compartment fitting structure with a swivel bar includes a swivel bar 4, a swivel bar hole 7, a lock nut 5, an inner sleeve surface 8 of the compartment, and an outer sleeve surface 9 of the compartment. The swivel bar 4 and the swivel bar hole 7 penetrating the front and rear ends of the compartment are in clearance fit, and the inner sleeve surface 8 and the outer sleeve surface 9 of the compartment are in sleeve fit. The head and tail of the swivel bar 4 have external threads, and the compartments are fastened together by the external threads of the swivel bar 4 and the lock nut 5, thus pressing the front and rear compartments together.

[0007] Preferably, the end face of the compartment has a positioning marking line 6.

[0008] Preferably, the inner sleeve 8 and the outer sleeve 9 of the compartment have positioning pins.

[0009] Preferably, the inner sleeve surface 8, the outer sleeve surface 9, and the through hole 7 of the compartment are glued together.

[0010] Preferably, the anti-loosening nut 5 is a nut with a flat washer and a spring washer.

[0011] Preferably, the anti-loosening nut 5 is a self-locking nut.

[0012] Preferably, the head and tail of the sprue 4 are also secured with cotter pins to prevent loosening.

[0013] Preferably, the head and tail of the guide bar 4 are also secured with a safety lock to prevent loosening.

[0014] Preferably, the material of the through bar 4 is a metallic material with a tensile strength greater than 500 MPa.

[0015] Technical effects of this utility model

[0016] The segment connection structure with a through bar features high connection reliability and good force transmission. It has low requirements for the strength of segment materials and can be used to connect carbon fiber composite segments, engineering resin segments, and wooden segments in aircraft. At the same time, it has fewer fasteners and features quick assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a compartment connection structure with a perforation strip.

[0018] Figure 2 This is a schematic diagram of the interlocking surface of a compartment with a perforation strip.

[0019] Figure 1 In the middle, 1. Front compartment, 2. Middle compartment, 3. Rear compartment, 4. Scaffold bar, 5. Anti-loosening nut, 6. Positioning markings.

[0020] Figure 2 In the middle, 7 is the through hole, 8 is the inner sleeve of the compartment, and 9 is the outer sleeve of the compartment. Detailed Implementation

[0021] See Figure 1 and Figure 2 Taking a three-section connection as an example, the connection structure includes: forward compartment 1, middle compartment 2, aft compartment 3, purging bar 4, anti-loosening nut 5, purging bar hole 7, inner sleeve surface of compartment 8, and outer sleeve surface of compartment 9. The detailed structural features of the inner sleeve surface 8 and the outer sleeve surface 9 are as follows... Figure 2 As shown. The cleaning rod 4 and the cleaning rod hole 7 have a clearance fit. Locating pins can be designed at the inner sleeve surface 8 and the outer sleeve surface 9 of the compartment to improve the connection accuracy of the compartments. For compartment connections that are not disassembled, adhesive bonding is used at the connection points of the inner sleeve surface 8, the outer sleeve surface 9, and the cleaning rod hole 7. The compartments are fastened together by the external thread of the cleaning rod 4 and the lock nut 5, pressing the front, middle, and rear compartments together. The lock nut 5 has various forms, such as nuts with flat washers and spring washers, as well as self-locking nuts. Besides the nut type, cotter pins and safety pins can also be used for fastening.

[0022] Assembly process: First, insert the scouring rod 4 into the scouring rod hole 7 of the middle compartment 2; Second, connect the front compartment 1 and the rear compartment 3 to the middle compartment 2 respectively. If there are locating pins, install them first. If there are locating lines 6, ensure that the lines of the docking sections are aligned during the connection process to ensure that all scouring rods 4 are inserted into the scouring rod hole 7; Third, adjust the protruding length of the scouring rod 7 and install the anti-loosening nut 5 to complete the assembly.

[0023] Disassembly process: First step, remove the anti-loosening nut 5; second step, pull out the front compartment 1 and the rear compartment 3 respectively.

Claims

1. A compartment fitting structure with a through bar, characterized in that, It includes a swivel bar (4), a swivel hole (7), a lock nut (5), an inner sleeve surface (8) of the compartment, and an outer sleeve surface (9) of the compartment. The swivel bar (4) and the swivel hole (7) that penetrates the front and rear ends of the compartment are in clearance fit, and the inner sleeve surface (8) and the outer sleeve surface (9) of the compartment are in sleeve fit. The head and tail of the swivel bar (4) have external threads. The compartments are fastened together by the external threads of the swivel bar (4) and the lock nut (5), pressing the front and rear compartments together.

2. The compartment sleeve structure with a through bar as described in claim 1, characterized in that, The end face of the compartment has positioning markings (6).

3. A compartment sleeve structure with a through bar as described in claim 1, characterized in that, The inner sleeve (8) and outer sleeve (9) of the compartment are equipped with positioning pins.

4. A compartment sleeve structure with a through bar as described in claim 1, characterized in that, The inner sleeve (8), outer sleeve (9), and through hole (7) of the compartment are glued together.

5. A compartment sleeve structure with a through bar as described in claim 1, characterized in that, The anti-loosening nut (5) is a nut with a flat washer and a spring washer.

6. A compartment sleeve structure with a through bar as described in claim 1, characterized in that, The anti-loosening nut (5) is a self-locking nut.

7. A compartment sleeve structure with a through bar as described in claim 1, characterized in that, The head and tail of the purging bar (4) are also secured with cotter pins to prevent loosening.

8. A compartment sleeve structure with a through bar as described in claim 1, characterized in that, The head and tail of the purging bar (4) are also secured by a safety lock to prevent loosening.

9. A compartment sleeve structure with a through bar as described in claim 1, characterized in that, The material of the swivel bar (4) is a metallic material with a tensile strength greater than 500 MPa.

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