Underframe structure of aircraft ground air conditioner

Abstract

The utility model relates to the technical field of aircraft ground air conditioners, and discloses a chassis structure of an aircraft ground air conditioner, which comprises a rectangular frame and a bearing plate laid at the top of the frame, and a plurality of lifting lugs are arranged on the side surfaces corresponding to two long sides of the frame at intervals. Lifting force is transmitted through the frame and the lifting lugs of the bottom frame structure, so that stress distribution of the whole unit is more reasonable, compared with a traditional top lifting structure, various working conditions in the lifting and transporting process can be better coped with, an outer enclosure of the unit does not need to bear main stress in the lifting process, and safety and stability of lifting and transporting are improved.

Description

Technical Field

[0001] This utility model relates to the field of aircraft ground air conditioning technology, and in particular to a chassis structure for aircraft ground air conditioning. Background Technology

[0002] In the traditional design and application of aircraft ground air conditioning units, a lifting structure is usually installed on top of the unit. Since the lifting point is located on top of the unit, the weight of the entire unit is mainly supported and transferred through the top lifting structure during lifting and transportation. This requires the unit's outer casing to have high structural strength to withstand various stresses generated during the lifting process, including tensile forces, shear forces, and impact forces caused by shaking.

[0003] In the design of the unit's outer casing structure, to meet the strength requirements of top-mounted installation, it is often necessary to increase the thickness of the materials, use high-strength materials, or implement special reinforcement designs. For example, using thicker metal plates to make the outer casing not only increases material costs but also increases the overall weight of the unit. At the same time, special reinforcement structures complicate the design and manufacturing process of the outer casing, increasing processing difficulty and manufacturing costs.

[0004] Therefore, it is necessary to propose a scheme for hoisting the unit using its underframe structure. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a chassis structure for an aircraft ground air conditioner, so that the chassis has the ability to be hoisted.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A chassis structure for an aircraft ground air conditioner includes a rectangular frame, a load-bearing plate laid on top of the frame, and multiple lifting lugs spaced apart on the sides corresponding to its two long sides.

[0008] As a further improvement to the above technical solution, the lifting lug is formed by bending a plate to form a fixed plate and a lifting plate. The lifting plate has a lifting hole, and the included angle between the fixed plate and the lifting plate is an obtuse angle.

[0009] As a further improvement to the above technical solution, the fixing plate is fixed to the side of the frame by welding.

[0010] As a further improvement to the above technical solution, mounting holes are provided at the corners of the fixed plate, and each mounting hole is fixed to the side of the frame with screws.

[0011] As a further improvement to the above technical solution, the frame includes a rectangular outer frame and an inner frame disposed within the outer frame and fixed to the inner wall of the outer frame, wherein the inner frame is in the form of a grid.

[0012] As a further improvement to the above technical solution, a reinforcing rod is also provided in the middle of the frame.

[0013] As a further improvement to the above technical solution, the outer frame is composed of multiple channel steels, and the inner frame is composed of multiple portal steels.

[0014] As a further improvement to the above technical solution, the support plate is composed of multiple sub-plates spliced ​​together, and the sub-plates are fixed to the inner frame with screws.

[0015] The beneficial effects of this utility model are as follows: The aircraft ground air conditioner chassis structure provided by this utility model has lifting lugs on the frame, and the lifting force is transmitted through the frame and lifting lugs of the chassis structure, making the force distribution of the entire unit more reasonable. Compared with the traditional top-mounted structure, it can better cope with various working conditions during lifting and transportation. The outer enclosure of the unit does not need to bear the main stress during the lifting process, which improves the safety and stability of lifting and transportation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the underframe structure of an aircraft ground air conditioner.

[0017] Figure 2 for Figure 1 A magnified view of a portion of region L in the middle.

[0018] Figure 3 This is a schematic diagram of the framework.

[0019] Explanation of main component symbols: 1-Frame, 11-Outer frame, 12-Inner frame, 13-Reinforcing rod, 2-Bearing plate, 3-Lifting lug, 31-Fixed plate, 32-Lifting plate, 33-Lifting hole, 34-Mounting hole, 4-Bearing plate, 41-Sub-plate. Detailed Implementation

[0020] This utility model provides a base frame structure for an aircraft ground air conditioner. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0021] Please see Figures 1 to 3This utility model provides a chassis structure for an aircraft ground air conditioner, including a rectangular frame 1 and a support plate 42 laid on the top of the frame 1. The frame 1 has multiple lifting lugs 3 spaced apart on the sides corresponding to its two long sides.

[0022] When moving the aircraft ground air conditioning unit, the lifting equipment's slings are connected to these lifting lugs 3 to lift the entire air conditioning unit. Because the lifting lugs 3 are located on the side of the underframe structure, the lifting force is transmitted through the underframe structure, changing the traditional method of relying on the top-mounted lifting structure of the unit to bear the weight.

[0023] Compared with existing technologies, the lifting force is transmitted through the frame 1 and lifting lugs 3 of the base frame structure, making the force distribution of the entire unit more reasonable. Compared with the traditional top-mounted structure, it can better cope with various working conditions during lifting and transportation. The outer enclosure of the unit does not need to bear the main stress during the lifting process, which improves the safety and stability of lifting and transportation.

[0024] See Figure 2 As shown, the lifting lug 3 is formed by bending a single plate to create a fixed plate 31 and a lifting plate 32. The lifting plate 32 has a lifting hole 33, and the included angle between the fixed plate 31 and the lifting plate 32 is an obtuse angle. This integrated structural design, compared to separate component connections, offers better overall integrity and stability. It can more effectively disperse stress when subjected to lifting forces, reducing localized stress concentration and lowering the risk of deformation or damage to the lifting lug 3 during lifting, thereby ensuring the safe and reliable lifting and transportation of the aircraft ground air conditioning unit.

[0025] The obtuse angle design between the fixed plate 31 and the lifting plate 32 allows the lifting lug 3 to transfer the force to the base structure at a more reasonable angle when bearing the lifting force. This avoids unnecessary additional bending moments or shear forces on the base structure due to unreasonable force transmission direction, which helps protect the integrity and durability of the base structure, extends the service life of the aircraft ground air conditioning unit, and reduces maintenance costs caused by improper structural stress.

[0026] In one embodiment, the fixing plate 31 is fixed to the side of the frame 1 by welding. Welding can form a permanent connection between the fixing plate 31 and the side of the frame 1, which can withstand greater tensile force, shear force, and impact force caused by shaking, etc., to ensure the stability of the connection between the lifting lug 3 and the base frame 1 during the lifting and transportation of the aircraft ground air conditioning unit, effectively preventing dangerous situations such as the lifting lug 3 falling off, and ensuring the safety of the entire operation process.

[0027] In another embodiment, mounting holes 34 are provided at the corners of the fixed plate 31, and each mounting hole 34 is fixed to the side of the frame 1 with screws, making the installation and removal of the lifting lug 3 relatively simple and quick. This improves assembly efficiency and reduces assembly costs during the production and assembly of aircraft ground air conditioning units; it also facilitates operation during later maintenance, repair, or replacement of the lifting lug 3.

[0028] Specifically, the frame 1 includes a rectangular outer frame 11 and an inner frame 12 disposed within the outer frame 11 and fixed to the inner wall of the outer frame 11. The inner frame 12 is grid-shaped. The outer frame 11 provides overall contour support, while the grid-shaped inner frame 12 further enhances the structural strength of the frame 1. The grid structure can effectively disperse forces from all directions. Whether it is the gravity of its own components during normal operation of the unit, or the tensile and impact forces borne during lifting and transportation, they can be evenly distributed to the entire frame 1 through the grid structure of the inner frame 12, reducing the possibility of local deformation or damage, greatly improving the stability and reliability of the frame 1, and ensuring the normal use and safe lifting of the aircraft ground air conditioning unit under various operating conditions.

[0029] Furthermore, a reinforcing rod 13 is provided at the middle position of the frame 1. Located in the middle of the frame 1, the reinforcing rod 13 effectively enhances the deformation resistance of the frame 1 in the central region. When subjected to lifting forces, the weight of the unit itself, and external forces such as vibration and impact during transportation, the reinforcing rod 13 can share and transfer stress, reducing the overall bending and torsional deformation of the frame 1, thus maintaining better shape stability. This ensures the structural integrity of the aircraft ground air conditioning unit and the relative positional accuracy of its components, guaranteeing its normal operation and safe lifting.

[0030] In this embodiment, the outer frame 11 is composed of multiple channel steels, and the inner frame 12 is composed of multiple portal steels. The channel steel structure of the outer frame 11 possesses high strength and good load-bearing capacity, stably supporting the weight of the unit and external forces to ensure safety; it is easy to process and assemble, improving production efficiency and reducing costs; it also enhances structural stability and effectively resists deformation. The portal steel structure of the inner frame 12 enhances structural strength and disperses stress, improving the overall stability of the frame 1.

[0031] Preferably, the support plate 42 is composed of multiple sub-plates 41 spliced ​​together, and the sub-plates 41 are fixed to the inner frame 12 with screws. Since the support plate 42 is composed of multiple sub-plates 41 spliced ​​together and fixed to the inner frame 12 with screws, when a sub-plate 41 is damaged or requires maintenance, only the corresponding screws need to be removed to easily remove the sub-plate 41 for processing, without requiring large-scale disassembly or replacement of the entire support plate 42. This modular design greatly reduces maintenance difficulty and cost, and improves the maintainability and availability of the equipment. During the long-term use of the aircraft ground air conditioning unit, if the support plate 42 is partially damaged due to accidental impact, wear, or other reasons, this convenient maintenance method can quickly restore the unit to normal operation, reducing the impact of downtime on airport ground services and other related work.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A chassis structure for an aircraft ground air conditioner, characterized in that, It includes a rectangular frame and a load-bearing plate laid on top of the frame. The frame has multiple lifting lugs spaced apart on the sides corresponding to its two long sides. Each lifting lug is formed by bending a plate to form a fixed plate and a lifting plate. The lifting plate has lifting holes. The included angle between the fixed plate and the lifting plate is an obtuse angle.

2. The chassis structure of the aircraft ground air conditioner according to claim 1, characterized in that, The fixing plate is fixed to the side of the frame by welding.

3. The chassis structure of the aircraft ground air conditioner according to claim 1, characterized in that, Mounting holes are provided at the corners of the fixed plate, and each mounting hole is fixed to the side of the frame with screws.

4. The chassis structure of the aircraft ground air conditioner according to claim 1, characterized in that, The frame includes a rectangular outer frame and an inner frame disposed within the outer frame and fixed to the inner wall of the outer frame. The inner frame is grid-shaped.

5. The chassis structure of the aircraft ground air conditioner according to claim 4, characterized in that, A reinforcing bar is also provided in the middle of the frame.

6. The chassis structure of the aircraft ground air conditioner according to claim 4, characterized in that, The outer frame is composed of multiple channel steels, and the inner frame is composed of multiple portal steels.

7. The chassis structure of the aircraft ground air conditioner according to claim 4, characterized in that, The support plate is composed of multiple sub-plates spliced ​​together, and the sub-plates are fixed to the inner frame with screws.

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