Hanging device suitable for thin-wall shell

Abstract

The utility model discloses a hanging device suitable for a thin-wall shell, the device comprises a positioning base plate, a lifting lug assembly and a plurality of fixing screws, the positioning base plate is arranged on the inner side face of the thin-wall shell, and the positioning base plate and the thin-wall shell are connected into a whole through the fixing screws arranged in the circumferential direction; the lifting lug assembly is arranged on the outer side face of the thin-wall shell and penetrates through the opening in the thin-wall shell to be detachably and fixedly connected with the positioning base plate. Specifically, the lifting lug assembly is composed of an upper lifting ring and a lower lifting shaft, a lifting shaft mounting through hole is formed in the center of the positioning base plate, and the lower lifting shaft can be embedded in the lifting shaft mounting through hole; an inner threaded hole is formed in the axis of the lower lifting shaft and is in threaded fit with a fastening nut penetrating through the lifting shaft mounting through hole, so that the lifting lug assembly and the positioning base plate are locked together. The hanging device is simple and compact in structure, convenient to hang and transport, stable in operation performance and capable of avoiding deformation and tearing of the thin-wall shell and ensuring safe and reliable hanging of the thin-wall shell.

Description

Technical Field

[0001] The utility model relates to an aerospace product mounting technology, in particular to a hanging device suitable for a thin-walled shell. Background Art

[0002] In the aerospace field, a growing number of aerospace mounts are being used for aircraft. These products typically utilize standard lifting lugs, threaded and / or welded for lifting and transportation. However, standard lifting lugs are only suitable for aerospace mounts with thicker shells and sufficient material strength. In recent years, with the rapid development and widespread use of unmanned aerial vehicles (UAVs), aircraft designs have gradually trended toward lightweight and miniaturization, requiring aerospace mounts to be smaller in weight and size. Consequently, the shells of these designed aerospace mounts are becoming thinner, with lightweight aluminum or non-metallic materials often used. These thin-walled shells offer a range of advantages, including light weight, material savings, and a compact structure, which are crucial for improving the overall performance of aerospace mounts.

[0003] However, when lifting and transporting thin-walled shells, due to their thin wall thickness and poor welding performance, standard lifting ears are used for hanging operations, which require connection to the lifting ears through threads and / or welding. If the thin-walled shells are not subjected to necessary and reliable tooling reinforcement, irreversible deformation will occur during the hanging process of the thin-walled shells, and even tearing will occur, leading to hanging accidents, making it difficult for standard lifting ears that rely on threads and / or welding connections to adapt to new requirements.

[0004] In order to avoid deformation and tearing of thin-walled shells during the hanging process, technical personnel in this field have been seeking effective hanging methods and devices for thin-walled shells, so as to meet the requirements of hanging and protecting finished products and ensure the safety of hanging thin-walled shells. Utility Model Content

[0005] The purpose of the utility model is to provide a hanging device suitable for thin-walled shells, which has a simple and compact structure, is easy to hang and transport, has stable operating performance, can avoid deformation and tearing of thin-walled shells, and ensure safe and reliable hanging of thin-walled shells.

[0006] To achieve the above-mentioned purpose, the hanging device designed by the present invention is suitable for thin-walled shells, including a positioning pad, a lifting ear assembly, and several fixing screws. The special feature is that: the positioning pad is arranged on the inner side of the thin-walled shell, and it is connected to the thin-walled shell as a whole through fixing screws arranged along the circumferential direction; the lifting ear assembly is arranged on the outer side of the thin-walled shell, and it passes through the opening on the thin-walled shell and is detachably fixedly connected to the positioning pad.

[0007] As a preferred embodiment, the lifting lug assembly consists of an upper lifting ring and a lower lifting shaft. The positioning plate has a centrally located lifting shaft mounting hole, into which the lower lifting shaft is inserted. The axis of the lower lifting shaft is provided with an internally threaded hole, which engages with a set nut threaded through the lifting shaft mounting hole, thereby removably locking the lifting lug assembly and the positioning plate together. The threaded engagement of the lower lifting shaft with the set nut provides a simple structure, compact connection, and convenient operation, ensuring stable and reliable hanging.

[0008] Furthermore, a limiting plane is provided on the outer wall of the lower suspension shaft, and a positioning flat block is provided on the inner wall of the suspension shaft mounting hole. The limiting plane is embedded and matched with the positioning flat block, thereby limiting the rotation of the lower suspension shaft in the suspension shaft mounting hole and fixing the installation direction of the lifting ear assembly.

[0009] Furthermore, a tool slot is provided on the top of the locking nut, and a special tool can be inserted quickly and accurately through the tool slot, thereby conveniently fixing the locking nut and the lifting ear assembly by thread through the special tool.

[0010] As a preferred solution, the upper surface of the positioning pad is in a close fit with the inner side surface of the thin-walled shell. The close fit can increase the strength and rigidity of this part and ensure that the thin-walled shell does not deform or tear.

[0011] Furthermore, the upper surface of the positioning pad is an arc surface that fits tightly with the inner side surface of the thin-walled shell, so that the contact bearing surface between the positioning pad and the thin-walled shell of the mounted product can be effectively increased.

[0012] Furthermore, the arc angle of the upper surface of the arc surface of the positioning pad is By designing an appropriate arc range, the size of the positioning pad can be made more reasonable while ensuring the contact with the bearing surface.

[0013] Furthermore, the number of the fixing screws is 8 and they are evenly arranged around the positioning pad, so as to ensure that the thin-walled shell is subjected to balanced force and is stably and reliably connected to the positioning pad.

[0014] Furthermore, the upper lifting ring and the lower lifting shaft of the lifting lug assembly are an integrally formed structure, which can further simplify the structure of the lifting lug assembly and reduce manufacturing costs.

[0015] The advantages of the present invention are that the designed positioning pad is arranged on the inner side of the thin-walled shell and is connected to the thin-walled shell by fixing screws arranged along the circumference. It can effectively disperse the stress during the hanging process and prevent the thin-walled shell from being deformed or damaged during hanging. Furthermore, in order to solve the problem of stable working performance of the hanging device, the design of the hanging ear assembly is composed of an upper hanging ring and a lower hanging shaft. The axis of the lower hanging shaft is provided with an internal threaded hole. The internal threaded hole is matched with the thread of the fixing nut passing through the hanging shaft mounting hole, which not only ensures the axial fixation of the hanging ear assembly, but also removably locks the hanging ear assembly and the positioning pad together, effectively improving the strength of the overall structure of the hanging device. In addition, the present invention has a simple and reliable structure. The main mounting components are all designed with threaded connections, which effectively reduces the difficulty of assembly and maintenance time. At the same time, the upper surface of the positioning pad is preferably a circular arc surface that fits tightly with the inner side of the thin-walled shell, which can further ensure the stable operation of the hanging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic cross-sectional view of a hanging device suitable for thin-walled shells.

[0017] Figure 2 for Figure 1 Schematic diagram of the three-dimensional assembly structure of the middle lifting ear assembly and the positioning pad.

[0018] Figure 3 for Figure 2 Schematic diagram of the three-dimensional exploded structure of the middle lifting eye assembly and positioning pad at a certain perspective.

[0019] Figure 4 for Figure 2 Schematic diagram of the three-dimensional exploded structure of the middle lifting eye assembly and the positioning pad from another perspective.

[0020] The components in the figure are numbered as follows: thin-walled shell 1; positioning pad 2 (including: hanging shaft mounting through hole 21, positioning flat block 22); ear assembly 3 (including: upper hanging ring 31, lower hanging shaft 32, limiting plane 33, internal threaded hole 34); locking nut 4 (including: tool groove 41, external thread 42); fixing screw 5. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but these embodiments should not be construed as limiting the present invention.

[0022] like Figures 1 to 4As shown, the hanging device for thin-walled shells described in this embodiment mainly consists of a positioning plate 2, a lifting lug assembly 3, a set nut 4, and eight fixing screws 5. The positioning plate 2 is arranged on the inner side of the thin-walled shell 1 and is connected to the thin-walled shell 1 by eight fixing screws 5 evenly arranged along the circumference. The lifting lug assembly 3 is arranged on the outer side of the thin-walled shell 1 and is removably fixed to the positioning plate 2 through an opening in the thin-walled shell 1.

[0023] Specifically, the lifting lug assembly 3 is composed of an upper lifting ring 31 and a lower hanging shaft 32, which are integrally formed. A hanging shaft mounting hole 21 is provided in the center of the positioning plate 2, into which the lower hanging shaft 32 can be inserted. A limiting plane 33 is provided on the outer wall of the lower hanging shaft 32, and a positioning flat stop 22 is provided on the inner wall of the hanging shaft mounting hole 21. The limiting plane 33 and the positioning flat stop 22 are engaged with each other to prevent the lower hanging shaft 32 from rotating, thereby fixing the installation direction of the lifting lug assembly 3. An internally threaded hole 34 is provided at the axis of the lower hanging shaft 32. The internally threaded hole 34 engages with the external thread 42 on the set nut 4 that passes through the hanging shaft mounting hole 21, thereby removably locking the lifting lug assembly 3 and the positioning plate 2 together.

[0024] In this embodiment, a hexagonal tool slot 41 is provided on the top of the locking nut 4 , into which a hexagonal special tool can be inserted, thereby enabling the locking nut 4 to be threadedly fixedly connected to the lifting ear assembly 3 conveniently and quickly.

[0025] In this embodiment, the upper surface of the positioning pad 2 is in close contact with the inner side of the thin-walled shell 1. The upper surface of the positioning pad 2 is designed to be an arc surface that is in close contact with the inner side of the thin-walled shell 1. The arc corresponding to the arc surface is

[0026] The working process of this embodiment is as follows. When the hanging device is installed on the thin-walled shell 1, the thin-walled shell 1 is fixedly installed on the positioning pad 2 by the fixing screws 5 arranged along its circumference, so that the upper surface of the arc surface of the positioning pad 2 is tightly matched with the inner side surface of the thin-walled shell 1, and the limiting plane 33 set on the outer wall of the lower hanging shaft 32 of the hanging ear assembly 3 is embedded with the positioning flat block 22 set on the inner wall of the hanging shaft mounting through hole 21, and then a special tool is inserted into the tool groove 41 set on the top of the locking nut 4, and the locking nut 4 is rotated to be threaded and fixedly connected with the internal threaded hole 34 of the lower hanging shaft 32; when the thin-walled shell needs to be hung, the upper hanging ring 31 of the hanging ear assembly 3 is hung up to perform the hanging operation.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hanging device suitable for a thin-walled shell, comprising a positioning pad (2), a hanging ear assembly (3), and a plurality of fixing screws (5), characterized in that: The positioning pad (2) is arranged on the inner side of the thin-walled shell (1) and is integrally connected to the thin-walled shell (1) via fixing screws (5) arranged along the circumference; the lifting lug assembly (3) is arranged on the outer side of the thin-walled shell (1) and is detachably fixedly connected to the positioning pad (2) through an opening on the thin-walled shell (1).

2. The hanging device for thin-walled shells according to claim 1, characterized in that: The lifting ear assembly (3) is composed of an upper lifting ring (31) and a lower lifting shaft (32); a lifting shaft mounting through hole (21) is provided at the center of the positioning pad (2), and the lower lifting shaft (32) can be embedded in the lifting shaft mounting through hole (21); an internal threaded hole (34) is provided at the axis of the lower lifting shaft (32), and the internal threaded hole (34) is threadedly matched with a fixing nut (4) passing through the lifting shaft mounting through hole (21), thereby detachably locking the lifting ear assembly (3) and the positioning pad (2) together.

3. The hanging device for thin-walled shells according to claim 2, characterized in that: A limiting plane (33) is provided on the outer wall of the lower hanging shaft (32), and a positioning flat block (22) is provided on the inner wall of the hanging shaft installation through hole (21). The limiting plane (33) is embedded and matched with the positioning flat block (22), thereby fixing the installation direction of the hanging ear assembly (3).

4. The hanging device for thin-walled shells according to claim 3, characterized in that: A tool groove (41) is provided on the top of the fixing nut (4), thereby facilitating threaded connection of the fixing nut (4) and the lifting ear assembly (3) using a special tool.

5. The hanging device for thin-walled shells according to any one of claims 1 to 4, characterized in that: The upper surface of the positioning pad (2) is in a tightly fitting state with the inner side surface of the thin-walled shell (1).

6. The hanging device for thin-walled shells according to claim 5, characterized in that: The upper surface of the positioning pad (2) is an arc surface that fits tightly with the inner side surface of the thin-walled shell (1).

7. The hanging device for thin-walled shells according to claim 6, characterized in that: The arc corresponding to the arc surface on the upper surface of the positioning pad (2) is 8. The hanging device for thin-walled shells according to any one of claims 1 to 4, characterized in that: The number of the fixing screws (5) is 8, and they are evenly arranged around the positioning pad (2).

9. The hanging device for thin-walled housing according to any one of claims 2 to 4, characterized in that: The upper hanging ring (31) and the lower hanging shaft (32) of the hanging ear assembly (3) are an integrally formed structure.

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