A positioning device for an aircraft heat exchanger

Abstract

The utility model relates to aviation heat exchanger technical field especially relates to a kind of positioning device of aviation heat exchanger, including frame body, bottom plate is arranged on frame body, and it includes: rotating mechanism, rotating mechanism includes the rotation shaft A and rotation shaft B rotatably arranged on frame body, right bracket and left bracket are respectively installed on rotation shaft A and rotation shaft B;Positioning mechanism, positioning mechanism includes the left positioning frame and right positioning frame symmetrically arranged on the both sides of heat exchanger, left positioning frame is slidably connected with bottom plate, and right positioning frame is interconnected with right bracket by connecting seat.The utility model has realized stable, accurate positioning, significantly improved maintenance quality and security, the utility model is positioned by left positioning frame, right positioning frame, quick clamp A and quick clamp B, can reliably clamp from the both sides of heat exchanger, completely eliminates the shaking and displacement of aviation heat exchanger in maintenance process.

Description

Technical Field

[0001] This utility model relates to the field of aviation heat exchanger technology, and in particular to a positioning device for aviation heat exchangers. Background Technology

[0002] Aircraft heat exchangers are critical components in aircraft environmental control and hydraulic systems, and their performance directly impacts flight safety. During scheduled maintenance or major overhauls, heat exchangers often need to be removed from the wings or fuselage for cleaning, inspection, and repair of their internal pipes and fins. Due to their large size and weight, and the fact that they frequently need to be rotated to different angles for easier handling during maintenance, a stable and efficient positioning device is essential. Currently, the methods for securing heat exchangers during maintenance in aircraft maintenance workshops are often quite primitive. Commonly, multiple operators work together, using jacks, blocks, and other simple tools to support the heat exchanger to a certain height, and then securing it manually or with simple binding. When it's necessary to rotate the heat exchanger, this relies entirely on multiple people working together, which is not only time-consuming and labor-intensive but also poses significant safety hazards.

[0003] The existing technical solutions currently suffer from the following main technical problems:

[0004] 1. Poor stability and low maintenance precision: The current simple support and fixing methods cannot effectively restrict the degree of freedom of the heat exchanger in all directions. When performing precision operations such as pipe welding and thread repair, the aviation heat exchanger is prone to shaking or displacement, which seriously affects the maintenance quality and may even damage the aviation heat exchanger.

[0005] 2. Currently, manually flipping aircraft heat exchangers requires the coordination of multiple workers, resulting in high labor intensity and extremely low efficiency due to the difficulty in precisely controlling the angle during the flipping process. During manual flipping, a slip of the hand or a miscoordination can easily cause the heat exchanger to fall, potentially damaging valuable aircraft components and threatening the personal safety of the operators. Different models of aircraft heat exchangers vary in size and interface shape; existing simple tooling lacks effective adjustment mechanisms, making it difficult to quickly adapt to various products and resulting in poor versatility.

[0006] Therefore, there is an urgent need to design a dedicated positioning device that can achieve stable clamping, convenient flipping, and safety and efficiency in order to solve the problems existing in the above-mentioned prior art. Utility Model Content

[0007] The purpose of this invention is to provide a positioning device for aircraft heat exchangers. This invention achieves stable and precise positioning, significantly improving maintenance quality and safety. By setting up a positioning mechanism consisting of a left positioning frame, a right positioning frame, quick clamp A, and quick clamp B, this invention can reliably clamp the heat exchanger from both sides, completely eliminating shaking and displacement of the aircraft heat exchanger during maintenance. It solves the problems of poor fixing stability and safety hazards in existing technologies. Operators can confidently perform precision maintenance operations, ensuring maintenance accuracy and greatly improving operational safety.

[0008] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a positioning device for an aviation heat exchanger, including a frame, on which a base plate is provided, comprising:

[0009] A rotating mechanism, comprising a rotating shaft A and a rotating shaft B rotatably mounted on the frame, wherein a right bracket and a left bracket are respectively mounted on the rotating shaft A and the rotating shaft B;

[0010] The positioning mechanism includes a left positioning frame and a right positioning frame symmetrically arranged on both sides of the heat exchanger. The left positioning frame is slidably connected to the base plate, and the right positioning frame is connected to the right bracket through a connecting seat. Quick clamps A and B for clamping and fixing the heat exchanger are respectively provided on the left positioning frame and the right positioning frame.

[0011] Furthermore, the base plate is provided with base plate reinforcing ribs to increase its structural strength.

[0012] Furthermore, the bottom of the frame is equipped with casters for easy movement.

[0013] Furthermore, a handwheel for driving the rotation of the rotating shaft B is provided at the front end, and the handwheel is connected to the rotating shaft B through a chain coupling.

[0014] Furthermore, a slide rail is provided on the base plate, and a slide block that cooperates with the slide rail is fixedly connected to the bottom of the left positioning frame.

[0015] Furthermore, the structures of the right and left brackets are adapted to the shapes of both ends of the heat exchanger to stably support the heat exchanger.

[0016] Furthermore, a reinforcing plate is provided at the bottom of the heat exchanger.

[0017] The advantages of this utility model are:

[0018] 1. This utility model achieves stable and precise positioning, significantly improving maintenance quality and safety. By setting up a positioning mechanism consisting of a left positioning frame, a right positioning frame, quick clamp A, and quick clamp B, this utility model can reliably clamp the heat exchanger from both sides, completely eliminating shaking and displacement of the aviation heat exchanger during maintenance. It solves the problems of poor fixation stability and safety hazards in existing technologies. Operators can confidently perform precision maintenance operations, ensuring maintenance accuracy and greatly improving operational safety.

[0019] 2. This utility model enables convenient 360-degree rotation, significantly improving work efficiency. It creatively combines handwheel drive with chain transmission through a rotating mechanism consisting of shaft A, shaft B, a chain coupling, and a handwheel. This design allows the operator to easily and precisely rotate the clamped heat exchanger to any desired angle by simply turning the handwheel, via the synchronously rotating left and right brackets. The left positioning bracket is slidably connected to the base plate via a slide rail and slide block, allowing its position to be flexibly adjusted according to the length of different heat exchanger models. Simultaneously, the structures of the right and left brackets are adapted to the shapes of both ends of the heat exchanger, enhancing support stability. This adjustable design allows the device to quickly adapt to various specifications of aviation heat exchangers, solving the problem of insufficient adaptability of existing tooling, achieving multi-purpose functionality, and effectively saving equipment investment costs. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a partially enlarged structural schematic diagram of the present invention.

[0023] The components are as follows: 1. Frame; 2. Base plate; 21. Base plate reinforcing rib; 3. Handwheel; 4. Socket head cap screw; 5. Shaft A; 6. Right bracket; 7. Left bracket; 8. Chain coupling; 9. Heat exchanger; 91. Reinforcing plate; 10. Shaft B; 11. Caster; 12. Left positioning frame; 13. Slide rail; 14. Slide seat; 15. Quick clamp A; 16. Right positioning frame; 17. Quick clamp B; 18. Connecting seat. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "installed," "connected," and "linked" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1:

[0027] Figure 1 This is a schematic diagram of the main structure of this utility model. Figure 2 This is a three-dimensional structural diagram of the present invention, as shown below. Figure 1 and Figure 2 As shown, this embodiment provides a positioning device for an aircraft heat exchanger 9, such as... Figure 1As shown, the device mainly includes a frame 1, a rotating mechanism, and a positioning mechanism. The frame 1 serves as the supporting skeleton of the entire device. A base plate 2 is fixedly installed on the frame 1 for supporting and installing other components. The base plate 2 provides a stable structural foundation, ensuring the overall stability of the device during load-bearing and operation. Reinforcing ribs are welded to the bottom of the base plate 2 to enhance its rigidity and resistance to deformation, thus bearing the load from heavy objects such as the heat exchanger 9. Casters 11 are installed at the bottom of the frame 1, enabling the entire device to move flexibly and be easily transferred between different workstations. Once in position, they are fixed by brakes, greatly improving the ease of movement of the equipment. The rotating mechanism in this invention is the core for realizing the flipping function of the heat exchanger 9. Rotating shafts A5 and B10 are rotatably mounted laterally on the left and right sides of the frame 1. The right bracket 6 and the left bracket 7 are respectively mounted on rotating shafts A5 and B10 to directly support the heat exchanger 9. The handwheel 3 is located at the front end (i.e., the extended end) of the rotating shaft B10. The handwheel 3 is connected to the rotating shaft B10 via a chain coupling 8. The chain coupling 8 is a component used to transmit the rotational power of the handwheel 3 to the rotating shaft B10. When the operator cranks the handwheel 3, the power drives the rotating shaft B10 to rotate via the chain coupling 8, which in turn drives the left bracket 7 and the slide block 14 fixed thereon to slide on the slide rail 13.

[0028] The positioning mechanism in this invention is responsible for centering and clamping the heat exchanger 9. The right positioning frame 16 is fixedly connected to the side of the right bracket 6 via a connecting seat 18 and can rotate with the right bracket 6. The left positioning frame 12 is slidably connected to the base plate 2. Specifically, a slide rail 13 is installed on the base plate 2, and a slide block 14 that cooperates with the slide rail 13 is fixed at the bottom of the left positioning frame 12. Quick clamps A15 and B17 in this invention are respectively installed on the left positioning frame 12 and the right positioning frame 16. The slidably connected left positioning frame 12 can be adjusted in position according to heat exchangers 9 of different lengths to achieve lateral centering. Quick clamps A15 and B17 are used to clamp the heat exchanger 9 from both sides to prevent it from shaking or shifting during maintenance or flipping, ensuring operational safety and accuracy.

[0029] Working Principle: In the preparation stage, the device is moved to the working position via casters 11 and secured with brakes. The heat exchanger 9 is hoisted above the device, ensuring its ends are securely placed on the right bracket 6 and left bracket 7. The bracket profiles typically match the shape of the heat exchanger 9 ends to provide initial stable support. In the centering and clamping stage, the left positioning bracket 12 slides along the slide rail 13, aligning its quick clamp A15 with the side wall of the heat exchanger 9. Subsequently, the quick clamp A15 and the quick clamp B17 on the right positioning bracket 16 are simultaneously operated to firmly clamp the heat exchanger 9 from both sides. In the flipping operation stage, when different sides of the heat exchanger 9 need maintenance, the operator cranks the handwheel 3. The rotational motion of the handwheel 3 is transmitted to the rotating shaft B10 via the chain coupling 8, causing the left bracket 7 and the clamped heat exchanger 9 to rotate together around the shaft axis. Thanks to the rigid clamping of the positioning mechanism, the heat exchanger 9 can be smoothly rotated to any desired angle (such as horizontal, vertical, or tilted) and remain stable, facilitating all-around operation by the operator. After maintenance, the heat exchanger 9 is rotated back to a position suitable for lifting, and the quick clamps A15 and B17 are released to lift the aircraft heat exchanger 9 away.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A positioning device for an aircraft heat exchanger, comprising a frame (1) and a base plate (2) disposed on the frame (1), characterized in that, include: The rotating mechanism includes a rotating shaft A (5) and a rotating shaft B (10) rotatably mounted on the frame (1), and a right bracket (6) and a left bracket (7) are respectively mounted on the rotating shaft A (5) and the rotating shaft B (10). The positioning mechanism includes a left positioning frame (12) and a right positioning frame (16) symmetrically arranged on both sides of the heat exchanger (9). The left positioning frame (12) is slidably connected to the base plate (2), and the right positioning frame (16) is connected to the right bracket (6) through a connecting seat (18). Quick clamps A (15) and B (17) for clamping and fixing the heat exchanger (9) are respectively provided on the left positioning frame (12) and the right positioning frame (16).

2. The positioning device for an aircraft heat exchanger according to claim 1, characterized in that, The base plate (2) is provided with base plate reinforcing ribs (21) to increase its structural strength.

3. The positioning device for an aircraft heat exchanger according to claim 1, characterized in that, The bottom of the frame (1) is equipped with casters (11) for easy movement.

4. The positioning device for an aircraft heat exchanger according to claim 1, characterized in that, The front end of the rotating shaft B (10) is provided with a handwheel (3) for driving its rotation. The handwheel (3) is connected to the rotating shaft B (10) through a chain coupling (8).

5. A positioning device for an aircraft heat exchanger according to claim 1, characterized in that, A slide rail (13) is provided on the base plate (2), and a slide block (14) that cooperates with the slide rail (13) is fixedly connected to the bottom of the left positioning frame (12).

6. The positioning device for an aircraft heat exchanger according to claim 1, characterized in that, The structure of the right bracket (6) and the left bracket (7) is adapted to the shape of both ends of the heat exchanger (9) to stably support the heat exchanger (9).

7. A positioning device for an aircraft heat exchanger according to claim 6, characterized in that, The bottom of the heat exchanger (9) is provided with a reinforcing plate (91).

Images