CN214190065U

CN214190065U - Beam structure of light high rigidity belt joint based on increase material manufacturing

Info

Publication number: CN214190065U
Application number: CN202023164040.XU
Authority: CN
Inventors: 卓越; 丁涛; 王彤; 李江海; 甘学东; 李黎
Original assignee: AVIC Chengdu Aircraft Design and Research Institute
Current assignee: AVIC Chengdu Aircraft Design and Research Institute
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-09-14
Anticipated expiration: 2030-12-24

Abstract

The utility model belongs to the field of aviation aircraft structure design, in particular to a light high-rigidity beam structure with a joint based on additive manufacturing; the beam structure is formed by integrally forming an end plate, a reinforcing rib, a truss, a connecting boss and a joint lug plate through an additive manufacturing technology; wherein, a part of the end plate, the truss and the connecting lug boss jointly form a beam section of the beam structure, and the other part of the end plate, the reinforcing ribs and the joint lugs form a joint section of the beam structure. The utility model discloses the beam structure of taking complicated profile can be made to the vibration material disk technique that adopts, through reasonable design and arrangement, can make the crossbeam of rigidity height, light in weight, the small arbitrary shape of structure by rapid prototyping, breaks the restriction of traditional casting machining skill, realizes the high-efficient integration of light of crossbeam, joint isotructure.

Description

Beam structure of light high rigidity belt joint based on increase material manufacturing

Technical Field

The utility model belongs to aviation aircraft structural design field, concretely relates to crossbeam structure based on increase light high rigidity area joint of material manufacturing.

Background

Due to function expansion of modern aviation aircrafts, various functional devices need to be installed inside an aircraft body, and in order to provide a more abundant device installation space, the aircraft structure needs to reduce the volume and weight of the structure, reduce the number of structural parts and realize part integration and function integration as far as possible on the premise of meeting the structural bearing.

The landing frame cabin of the aircraft is mainly used for meeting the requirements of the retraction of landing frames, the space in the cabin is long and narrow, and the structure in the cabin needs to provide a mounting interface of a landing frame actuator cylinder retraction mechanism. At present, a beam structure is usually arranged between long and narrow beams of the landing frame cabin, so that the stability of the structure in the cabin is improved, and the structure is fixed on the beams of the landing frame cabin by adopting a joint structure, so that the load transmission of the structure is realized. Beam structures and structural structures are often formed by metal machining, and due to the limitation of machining equipment, materials still exist in the beam and joint structures and are excessive, so that structural weight is increased. The modern aircraft gradually improves to the lightweight of structural part, integrates the requirement, and traditional machining mode is difficult to break through the bottleneck that the structure subtracts heavy.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model provides a high, light in weight of rigidity, small structure are based on beam structure of vibration material disk's belt joint.

Technical utility model solution: a beam structure with a joint, which is light and high in rigidity and is manufactured based on additive manufacturing is characterized in that the beam structure is integrally formed by end plates, reinforcing ribs, trusses, connecting bosses and joint lugs through an additive manufacturing technology; wherein, a part of the end plate, the truss and the connecting lug boss jointly form a beam section of the beam structure, and the other part of the end plate, the reinforcing ribs and the joint lugs form a joint section of the beam structure.

Preferably, the arrangement positions and forms of the reinforcing ribs and the trusses of the beam structure are determined through topological optimization, namely, the structure is arranged on a main force transmission path and is integrally formed through material increase manufacturing, and the structure is light and efficient.

Preferably, the additive manufacturing can adopt gradient materials, and the materials meeting the requirements are arranged according to stress distribution, so that the weight of the structure is reduced.

Preferably, the reinforcing ribs and the truss can be internally provided with lattice structures, so that the weight of the structure is further reduced on the premise of ensuring the bearing effect of the structure, and the specific rigidity and the specific strength of the structure are further improved.

Preferably, the beam section of the beam structure can be extended so as to be connected with other equipment or structures, and the bearing effect is ensured.

Preferably, an oil valve can be integrated on the joint lug, so that lubricating oil can be conveniently injected into the bearing on the lug through the oil valve, and function expansion is realized.

The utility model discloses an actively the effect: the utility model discloses the beam structure of taking complicated profile can be made to the vibration material disk technique that adopts, through reasonable design and arrangement, can make the crossbeam of rigidity height, light in weight, the small arbitrary shape of structure by rapid prototyping, breaks the restriction of traditional casting machining skill, realizes the high-efficient integration of light of crossbeam, joint isotructure.

Drawings

FIG. 1 is a schematic view of a beam structure of a light-weight high-rigidity belt joint based on additive manufacturing,

FIG. 2 is a schematic view of the structure of the present invention applied to the body structure;

wherein: 1-end plate, 2-reinforcing rib, 3-truss, 4-connecting boss, 5-joint lug and 6-beam structure.

Detailed Description

The structure proposed by the present invention is described in detail below with reference to the drawings of the specification and the specific embodiment, as shown in fig. 1, the structure is a schematic view of a beam structure based on a lightweight high-rigidity belt joint manufactured by additive manufacturing, the structure is composed of an end plate 1, a reinforcing rib 2, a truss 3, a connecting boss 4, and a joint lug 5, and the end plate 1, the reinforcing rib 2, the truss 3, the connecting boss 4, and the joint lug 5 are integrally formed by a metal material through an additive manufacturing technology; wherein, a part of the end plate 1, the truss 3 and the connecting boss 4 form a beam section of the beam structure, and the other part of the end plate 1, the reinforcing rib and the joint lug form a joint section of the beam structure.

In the beam structure, the end plate 1 is attached to the peripheral structure of the beam, and the bolt mounting holes are formed in the end plate 1 and used for connecting the beam structure with other structures.

In the beam structure, the adopted reinforcing ribs 2 are arranged in the joint section area to provide support for the joint and improve the structural rigidity.

In the beam structure, the truss 3 is arranged in the beam section area, provides a support for the beam section main force transmission structure and improves the structural rigidity.

In the beam structure, the connecting boss 4 is arranged on the upper surface of the beam section truss 3 and used for connecting the beam structure with a peripheral structure or equipment, and the preferred position of the connecting boss 4 is the position where a plurality of trusses meet or the position on the trusses close to the end plate 1 so as to ensure enough connecting strength.

In the beam structure, the joint lug 5 of the joint section is used for mounting a bearing, and the actuating cylinder and other structures rotate on the joint lug through the bearing.

The structure around connecting at crossbeam structure crossbeam section both ends improves structural stability, and joint section installation bearing passes through structures such as bearing installation pressurized strut, and for the convenience of connecting fixedly, it has a plurality of mounting holes to open on crossbeam structure both ends end plate 1.

The implementation case is as follows: as shown in fig. 2, the utility model discloses an use the schematic diagram, 6 show the utility model relates to a beam structure, beam structure both ends are passed through end plate 1 and are connected with peripheral structural part (fuselage cabin section), arrange truss 3 realization structure in the beam section and pass and carry, provide the support for the crossbeam, improve structural rigidity. In the middle of the truss 3, a connecting boss 4 is arranged for connecting and supporting the cross beam and peripheral structures or equipment. Joint lugs 5 are arranged on the joint sections, the joint sections are used for installing structures of bearings, and the actuating cylinders and other structures rotate on the joint lugs through the bearings. And reinforcing ribs 2 are arranged near the joint lugs 5 to provide support for the joint and improve the structural rigidity. Through the additive manufacturing technology, the beam structure can be designed at will according to the use requirement, the weight increase caused by the process residue can be avoided, and the aim of structural lightweight can be achieved.

In the implementation process, the arrangement positions and the arrangement forms of the reinforcing ribs 2 and the trusses 3 of the beam structure are determined through topology optimization, namely the reinforcing ribs 2 and the trusses 3 are arranged on a main force transmission path and are integrally formed through material increase manufacturing, and the light and high-efficiency structure is realized.

In the implementation process, the reinforcing ribs 2 and the truss 3 can adopt lattice structures, the structure weight is further reduced on the premise of ensuring the bearing effect of the structure, and the specific rigidity and the specific strength of the structure are further improved.

The transverse length and the height of the beam section and the beam structure of the beam structure can be increased or reduced according to requirements, so that the beam structure can be connected with other equipment or structures conveniently, and the bearing effect is guaranteed.

Meanwhile, an oil valve can be integrated on the joint lug, so that lubricating oil can be conveniently injected into the bearing on the lug through the oil valve, and function expansion is realized.

The utility model provides a when the shaping was made to the crossbeam, the vibration material disk can adopt the gradient material, arranges the material that satisfies the requirement according to stress distribution to reduce overall structure weight.

To sum up, the beam structure with the joint, which is manufactured based on the additive, has the advantages of good stress form, reduced processing residue and convenience in realizing light structure; the part additive manufacturing technology can realize function expansion and is easy to form, and the functional design requirements are met.

Claims

1. The utility model provides a beam structure of light high rigidity belt joint based on increase material is made which characterized in that: the beam structure is formed by integrally forming an end plate, a reinforcing rib, a truss, a connecting boss and a joint lug plate through an additive manufacturing technology; wherein, a part of the end plate, the truss and the connecting lug boss jointly form a beam section of the beam structure, and the other part of the end plate, the reinforcing ribs and the joint lugs form a joint section of the beam structure.

2. The light high-rigidity beam structure with the joint, which is manufactured based on additive materials, according to claim 1, wherein: the arrangement positions and the forms of the reinforcing ribs and the trusses of the beam structure are determined through topological optimization.

3. The light high-rigidity beam structure with the joint, which is manufactured based on additive materials, according to claim 1, wherein: the material increase manufacturing adopts gradient materials, and the materials meeting the requirements are arranged according to stress distribution.

4. The light high-rigidity beam structure with the joint, which is manufactured based on additive materials, according to claim 1, wherein: the interior of the reinforcing ribs and the truss adopt a lattice structure.

5. The light high-rigidity beam structure with the joint, which is manufactured based on additive materials, according to claim 1, wherein: an oil valve is integrated on the joint lug, so that lubricating oil can be conveniently injected into the bearing assembled with the lug through the oil valve.

6. The light high-rigidity beam structure with the joint, which is manufactured based on additive materials, according to claim 1, wherein: the connecting boss is arranged on the upper surface of the beam section truss and used for connecting the beam structure with a peripheral structure or equipment.

7. The additive manufacturing-based lightweight high-rigidity beam structure with joints according to claim 1 or 6, wherein: the connecting bosses are arranged at the intersection of the trusses or on the trusses close to the end plates.