CN211223927U

CN211223927U - Single lug joint design

Info

Publication number: CN211223927U
Application number: CN201921818676.6U
Authority: CN
Inventors: 毛青松; 王新年; 何勇; 杨粉蓉; 杨高; 金迪; 陆鹏鹏; 凡玉
Original assignee: AVIC XAC Commercial Aircraft Co Ltd
Current assignee: AVIC XAC Commercial Aircraft Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-08-11
Anticipated expiration: 2029-10-25

Abstract

The application provides a monaural piece joint design and prevent damaged connection method, monaural piece joint be formed by left subassembly and right subassembly combination, the binding face of left side subassembly and right subassembly is perpendicular and bisect in the axis of auricle connecting hole, left side subassembly contains the left side body and the left side auricle of connecting, there is the left side connecting hole on the left side auricle, right side subassembly contains the right side body and the right side auricle of connecting, there is the right side connecting hole on the auricle is connected on the right side, the coaxial same diameter of left side connecting hole and right side connecting hole, the fixed monaural piece joint design that forms the combination of binding face laminating of left side subassembly and right subassembly, in addition, a sleeve runs through in the connecting hole that monaural piece connects and binaural piece joint, pass the sleeve with the connecting axle and connect monaural piece and binaural piece joint.

Description

Single lug joint design

Technical Field

The application relates to the structural design technology of an airplane, in particular to a joint structure for preventing the airplane from being damaged.

Background

In modern aircraft design, when the horizontal tail and the vertical tail of the aircraft are connected by adopting a centralized joint, the load of the horizontal tail is transmitted to the vertical tail by the joint, and the method plays a vital role in the safety of the whole aircraft. Because the design of the joint is always biased to safety, and because of the limitation of structural space and weight, the structural size of the lug plate must be reduced, the deformation is complex at the joint of the lug plate and the connecting shaft, and even the deformation exceeds the elastic area of the material and enters the plastic area, and the problem of nonlinearity is changed at the moment.

In the current effective civil aviation regulations and related advisory announcements, it can be appreciated that the multiple force transmission path, broken safety structure is a preferred mainstream design. The main reason is that the damaged safety structure has a crack-stopping function, the damage tolerance performance is outstanding, the damage can be detected in time before reaching the critical crack through planned inspection, and corresponding maintenance and repair are arranged, so that the strength of the structure cannot be reduced below the specified level in the specified service life, and the structure safety is guaranteed.

The traditional structure adopts a plurality of whole joints, simple structure, and assembly cost is little, and the shortcoming has damage or crackle production in the aircraft flight, can't prevent crack propagation or visual inspection, can't satisfy the damaged safety design, and the heavy cost of maintenance is high, needs the whole change during the change. When the bearing combination is adopted, although the bearing combination has certain aligning capability, the requirement of the horizontal tail for preventing vibration is very difficult, and the measures of maintenance, dust prevention, lubrication and the like in a narrow space are inconvenient. The technical problem to be solved at present is how to design a damaged safety structure, which can reduce the weight of the structure under the condition of reducing the process difficulty and can not reduce the structure performance.

Disclosure of Invention

An object of the present application is to provide a multi-force-transmitting joint connection structure and a connection method with double-layer breakage safety.

The application provides a monaural piece joint design contains and connects body and convex auricle of connection, be equipped with the connecting hole on the auricle, a serial communication port, the joint design form by left side subassembly and right subassembly combination, the binding face of left side subassembly and right subassembly is perpendicular and bisect in the axis of auricle connecting hole, left side subassembly contains the left side body and the left side auricle of connection, there is the left side connecting hole on the left side auricle of connection, right side subassembly contains the right side body and the right side auricle of connection, there is the right side connecting hole on the auricle of connection on the right side, the coaxial same diameter of left side connecting hole and right side connecting hole, the fixed monaural piece joint design that forms the combination of the binding face laminating of left side subassembly and right subassembly.

And shoulder bushings are respectively arranged in the left connecting hole of the left component and the right connecting hole of the right component.

When the double-lug-piece connector is used, the double-lug-piece connector is matched with the single-lug-piece connector, the double-lug-piece connector is provided with corresponding connecting holes, the left lug connecting hole and the right lug connecting hole of the double lug piece are also internally provided with shoulder bush sleeves, another sleeve penetrates through the connecting holes of the single lug piece connector and the double-lug-piece connector, and finally the connecting shaft penetrates through the sleeve to connect the single lug piece connector and the double-lug-piece connector.

The beneficial effect of this application lies in: 1) simple structure, stability is high, changes the whole joint among the prior art into the combination joint, reduces organism structure weight and size, improves assembly maneuverability and stability, maintainability. 2) The single lug piece joint and the double lug piece joint which are combined back to back by the left and right components are connected through the sleeve and the connecting shaft after being combined to form a double-layer safety structure for preventing damage, further expansion of the lug piece cracks can be effectively prevented, and effective force transmission can be still ensured after the lug piece is effectively prevented from being damaged.

The present application is described in further detail below with reference to the accompanying drawings of embodiments.

Drawings

FIG. 1 is a schematic view of a monaural tab junction configuration.

Fig. 2 is a schematic structural diagram of the left assembly in fig. 1.

Fig. 3 is a schematic structural diagram of the right assembly in fig. 1.

Figure 4 is a schematic view of a multi-force transfer connector connection with double layer breakage safety.

Fig. 5 is a schematic view of a breakage preventing joint connecting method.

The numbering in the figures illustrates: 1 left side subassembly, 2 right side subassemblies, 3 left side connection auricles, 4 right side connection auricles, 5 binding face, 6 fasteners, 7 shoulder bush, 8 monaural piece joint, 9 two ears piece joint, 10 connecting axles, 11 sleeves, 12 nuts.

Detailed Description

Referring to the drawings, the single-lug joint structure provided by the application is formed by combining a left component 1 and a right component 2, the binding surfaces 5 of the left component 1 and the right component 2 are perpendicular to and equally divide the axis of a lug connecting hole, the left component 1 comprises a left body and a left connecting lug 3 of a joint, the left connecting lug 3 is provided with a left connecting hole, the right component 2 comprises a right body and a right connecting lug 4 of the joint, the right connecting lug 4 is provided with a right connecting hole, the left connecting hole 3 and the right connecting hole 4 are coaxial and have the same diameter, the binding surfaces of the left component 1 and the right component 2 are fixedly bound through a fastener 6, and the combined single-lug joint structure is formed.

In the implementation, in order to improve the bearing capacity of the lug hole, the shoulder bush 7 is respectively arranged in the left connecting hole of the left component 1 and the right connecting hole of the right component 2, and the shoulder bush 7 is in interference fit with the lug hole.

During the use, the combination of single lug piece joint 8 and a matched double lug piece joint 9 of this application forms a many biography power joint connection structure that has double-deck damaged safety, double lug piece joint 9 on be equipped with corresponding connecting hole, be equipped with the convex shoulder bush in the left ear connecting hole of double lug piece and the right ear connecting hole equally, have a sleeve 11 to run through in the connecting hole that single lug piece connects and double lug piece joint in addition, pass the sleeve with connecting axle 11 and nut 12 and connect single lug piece joint and double lug piece joint finally, connecting axle 11 preferably chooses the spline bolt for use in the implementation.

In the specific use process, the left lug, the right lug, the convex shoulder lining and the fastener of the single lug joint form a combined joint, the convex shoulder lining of the double lug joint is of a primary safe force transmission structure, the left lug, the right lug and the lining are assembled to relieve the stress concentration around the hole, and the sleeve, the connecting shaft and the nut form a secondary safe force transmission structure, so that the fatigue performance of the joint is improved. The application provides a damaged safety structure reduces assembly parts, reduces structure weight, size and operation cost, has improved the stability and the anti ability of shimmying that connect, effectively guarantees the aircraft flat tail box section and bears the transmission.

Claims

1. The utility model provides a monaural piece joint design, contains and connects body and convex auricle of connection, be equipped with the connecting hole on the auricle, a serial communication port, the joint design form by left subassembly and right subassembly combination, the binding face of left side subassembly and right subassembly is perpendicular and divide equally in the axis of auricle connecting hole, left side subassembly contains the left side body and the left side auricle of connection, there is the left side connecting hole on the auricle of connection of left side, right side subassembly contains the right side body and the right side auricle of connection, there is the right side connecting hole on the auricle of connection of right side, the coaxial same diameter of left side connecting hole and right side connecting hole, the fixed monaural piece joint design that forms the combination of binding face laminating of left side subassembly.

2. The monaural joint structure of claim 1, wherein shoulder bushings are provided in the left attachment hole of the left component and in the right attachment hole of the right component, respectively.

3. The single-lug joint structure of claim 1 or 2, wherein there is a double-lug joint matching with the single-lug joint, the double-lug joint is provided with corresponding connecting holes, shoulder bushings are also provided in the left-lug connecting hole and the right-lug connecting hole of the double-lug, a sleeve is further inserted into the connecting holes of the single-lug joint and the double-lug joint, and finally a connecting shaft is inserted through the sleeve to connect the single-lug joint and the double-lug joint.