Pull rod adjusting device for ring-shaped heat sink

Abstract

The utility model discloses a kind of pull rod adjusting devices of annular radiator, pull rod adjusting device includes left upper locating plate, left lower locating plate, right upper locating plate, right lower locating plate, pull rod, pull rod sleeve, spherical bushing, pull rod ring, bolt, nut, bushing and rivet.When the gap needs to be adjusted, pull rod is moved relative to pull rod sleeve by screw thread drive, and then make the axial movement of rear bracket assembly relative to mounting bracket.The utility model avoids the stress concentration caused by the opening of mounting bracket by the non-parallel installation of left upper locating plate and left lower locating plate, reduces the process complexity formed due to the opening of mounting bracket, improves the reliability, durability and maintainability of annular radiator, and the gap between annular radiator and engine can be quickly and stably adjusted by pull rod adjusting device.

Description

Technical Field

[0001] This utility model relates to a rod adjustment device for a ring-shaped radiator, belonging to the field of aircraft environmental control and thermal management system design. Background Technology

[0002] With the rapid development of aircraft in both civilian and military fields, the requirements for aircraft reliability and durability are constantly increasing. As a crucial connecting component between the aircraft air intake and the engine, the annular radiator plays a vital role in cooling the high-temperature hot air generated by the engine, and its reliability and durability must be guaranteed. However, due to structural vibrations and high-temperature, high-pressure gases near the engine, the reliability and durability of the annular radiator structure face significant challenges. Therefore, it is particularly important to rationally design the annular radiator structure, reduce local stress concentration, and improve its reliability and durability during operation.

[0003] like Figure 1 , 5 As shown in Figure 6, the annular radiator is connected to the mounting frame on the machine via the mounting bracket 7, and flexibly docked with the front end of the engine via the rear bracket assembly 8. The rear bracket assembly 8 and the mounting bracket 7 are coaxially and movably assembled.

[0004] In order to solve the problem of adjusting the installation gap between the annular radiator and the engine, a simple and reliable adjustment structure needs to be designed, which will not compromise the stability, reliability and durability of the annular radiator. Summary of the Invention

[0005] The present invention aims to provide a tie rod adjustment device for an annular radiator, which on the one hand improves the reliability, durability and maintainability of the annular radiator and avoids failure of the tie rod adjustment device or damage to the annular radiator due to stress concentration; on the other hand, it can reliably, stably, conveniently and quickly adjust the installation gap between the annular radiator and the engine.

[0006] To solve the above problems, the present invention adopts the following technical solution: A rod adjustment device for a ring-shaped radiator, the ring-shaped radiator including a coaxial mounting bracket and a rear bracket assembly, the rod adjustment device comprising: The upper left positioning plate includes a first part and a second part that are not in the same plane, and the first part is fixed on the axial end face of the mounting bracket. The lower left positioning plate includes a first part and a second part that are not in the same plane. The first part is fixed on the circumferential surface of the mounting bracket. The lower left positioning plate and the upper left positioning plate are not parallel in space. The second part of the lower left positioning plate is connected to the second part of the upper left positioning plate by bolts and nuts. The upper right positioning plate includes a first part and a second part that are not in the same plane, and the first part is fixed on the circumferential surface of the rear bracket assembly. The lower right positioning plate includes a first part and a second part that are not in the same plane. The first part is fixed on the axial end face of the bracket assembly corresponding to the mounting bracket. The lower right positioning plate and the upper right positioning plate are not parallel in space. The second part of the lower right positioning plate is connected to the second part of the upper right positioning plate by bolts and nuts. The pull rod sleeve and the pull rod are described. The pull rod sleeve is a hollow tube with internal threads. The first axial end of the pull rod is a pull rod ring, and the second axial end has external threads. Two pull rods are connected to both ends of the pull rod sleeve through the external threads of the second axial end. The pull rod ring of one pull rod is placed between the second part of the upper left positioning plate and the second part of the lower left positioning plate, and the bolt passes through the ring hole of the pull rod ring. The pull rod ring of the other pull rod is placed between the second part of the upper right positioning plate and the second part of the lower right positioning plate, and the bolt passes through the ring hole of the pull rod ring.

[0007] As one solution: The upper left positioning plate is Z-shaped, with the top edge of the Z-shape forming the second part and the bottom edge of the Z-shape forming the first part. The bottom edge of the Z-shape is riveted to the axial end face of the mounting bracket. The lower left positioning plate is trihedral, with two faces forming the first part and the second part respectively, and the other face forming a reinforcing rib. The face forming the first part is riveted to the circumferential surface of the mounting bracket by rivets, and the face forming the second part is connected to the top edge of the upper left positioning plate by bolts and nuts. The upper right positioning plate is L-shaped, with the vertical side forming the first part and the horizontal side forming the second part. The vertical side is riveted to the circumferential surface of the rear bracket assembly by rivets. The lower right positioning plate is Z-shaped, with the top edge of the Z-shape forming the first part and the bottom edge of the Z-shape forming the second part. The top edge of the Z-shape is riveted to the axial end face of the bracket assembly, and the bottom edge of the Z-shape is connected to the horizontal side of the upper right positioning plate by bolts and nuts.

[0008] As one solution: The tie rod is provided with an outer hexagonal body; The tie rod sleeve is provided with an outer hexagonal body.

[0009] As one option, blind holes are provided on the outer hexagonal surfaces of the pull rod and the pull rod sleeve.

[0010] As one option, the bolt is also connected to a spherical bushing and a bushing, with the spherical bushing positioned in the annular hole of the tie rod ring.

[0011] As one solution: The mounting bracket has a limiting groove on its axial end face, and the side wall of the limiting groove forms an obtuse angle with the bottom of the groove. The rear bracket assembly has a triangular protrusion on its axial end face, and the rear bracket assembly is inserted into the limiting groove of the mounting bracket through the triangular protrusion to form a fit.

[0012] further: There are multiple limiting grooves, which are distributed on the same circumference of the axial end face of the mounting bracket at equal angular intervals. There are multiple triangular protrusions, which are distributed at equal angular intervals on the same circumference of the axial end face of the rear support assembly.

[0013] Alternatively, a sealing ring is provided on the axial end face of the rear bracket assembly away from the mounting bracket. When the rear bracket assembly contacts the engine, the sealing ring prevents air leakage.

[0014] The method for adjusting the installation gap between the annular radiator and the engine using the above-mentioned tie rod adjustment device includes: the tie rod moves axially relative to the tie rod sleeve by the relative rotation of the tie rod and the tie rod sleeve, thereby increasing or decreasing the distance between the tie rod and the tie rod sleeve, which in turn drives the mounting bracket and the rear bracket assembly to rotate relative to each other. During the relative rotation, the surface of the triangular protrusion slides along the side wall of the limiting groove, causing the rear bracket assembly to move axially relative to the mounting bracket, moving away from or closer to the mounting bracket, thereby reducing or increasing the installation gap between the rear bracket and the engine.

[0015] In this invention, the tie rod adjustment device mainly consists of four positioning plates, two tie rods, and one tie rod sleeve. The annular radiator, structurally an extension of the aircraft's air intake, exchanges heat between the large flow of cool external ram air entering the intake and the high-temperature air from the engine compressor, thereby cooling the hot air. The tie rod adjustment device is a crucial component during installation; its main function is to allow the rear support assembly of the annular radiator to move axially along the radiator's axis via the axial movement of the tie rods, thus adjusting the installation gap between the annular radiator and the engine.

[0016] Figure 8A common design involves using two identical, parallel-mounted upper left and lower left positioning plates on a ring-shaped radiator to fix the pull rod adjustment device to a mounting bracket. The upper left and lower left positioning plates are connected by bolts, thus securing one end of the pull rod adjustment device. This design requires openings in the mounting bracket to avoid interference when the upper left and lower left positioning plates are installed parallel to each other. This increases manufacturing complexity and can lead to stress concentration due to the openings, reducing the reliability, durability, and maintainability of the mounting bracket. Therefore, this invention addresses this issue by riveting the upper left and lower left positioning plates, which are of different shapes, to the ring-shaped radiator mounting bracket in a non-parallel manner. This ensures structural stability and normal movement of the pull rod adjustment device at the riveting point while avoiding stress concentration caused by openings in the ring-shaped radiator mounting bracket. This reduces manufacturing complexity caused by bracket openings and improves the reliability, durability, and maintainability of the ring-shaped radiator.

[0017] Compared with existing technologies, this utility model eliminates the opening on the mounting bracket and redesigns the shape of the upper left positioning plate, installing it onto the circumferential surface of the mounting bracket. This design reduces the manufacturing complexity caused by the opening while ensuring the normal adjustment movement of the tie rod device, reduces the concentrated stress caused by the opening, and strengthens the axial and circumferential rigidity of the lower left positioning plate (composed of multiple plates in different directions). This improves the reliability, durability, and maintainability of the annular radiator and the tie rod adjustment device, ensuring reliable, stable, convenient, and rapid adjustment of the mounting gap between the annular radiator and the engine. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a ring-shaped radiator; Figure 2 for Figure 1 A magnified view of a portion of the document; Figure 3 for Figure 1 A partial view; Figure 4 This is a schematic diagram showing the connection between the upper left positioning plate and the pull rod; Figure 5 This is a structural diagram of the mounting bracket; Figure 6 This is a structural schematic diagram of the rear support assembly; Figure 7 This is a schematic diagram of the triangular protrusion sliding in the limiting groove; Figure 8 A schematic diagram of a scheme to fix the tie rod adjustment device to the mounting bracket by using an opening in the mounting bracket and two identical and parallel mounting upper left and lower left positioning plates; In the diagram: 1-Upper left positioning plate, 2-Lower left positioning plate, 3-Upper right positioning plate, 4-Lower right positioning plate, 5-Pull rod, 6-Pull rod sleeve, 7-Mounting bracket, 8-Rear bracket assembly, 9-Spherical bushing, 10-Pull rod ring, 11-Hexagonal flat head bolt, 12-Hexagonal groove nut, 13-Bushing, 14-Rivet, 15-Limiting groove, 16-Triangular protrusion, 17-Sealing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 8 As shown, if the tie rod adjustment structure is fixed to the mounting bracket 7 by two identical and parallel upper left positioning plates on the annular radiator, then due to the parallel installation of the two upper left positioning plates, one of the upper left positioning plates (the lower one of the two) needs to have an opening in the housing of the mounting bracket 7 to avoid interference with the mounting bracket 7. This not only increases the complexity of the process but also leads to stress concentration caused by the opening, reducing the safety and reliability of the mounting bracket 7 and the entire annular radiator. Based on this, this utility model rivets the two upper left positioning plates to the annular radiator mounting bracket 7 in a non-parallel manner. This ensures the structural stability and normal movement of the tie rod adjustment structure at the riveting point while avoiding stress concentration caused by the opening in the annular radiator mounting bracket 7. This reduces the process complexity caused by the opening in the mounting bracket 7 and improves the reliability, durability, and maintainability of the annular radiator.

[0021] like Figures 1-6 As shown, this utility model discloses a pull rod adjustment device for a ring-shaped radiator, including an upper left positioning plate 1, a lower left positioning plate 2, an upper right positioning plate 3, a lower right positioning plate 4, a pull rod 5, a pull rod sleeve 6, a spherical bushing 9, a pull rod ring 10, a hexagonal flat head bolt 11, a hexagonal groove nut 12, a bushing 13, and a rivet 14.

[0022] The upper left positioning plate 1 is Z-shaped. The top and bottom edges of the Z-shape are parallel but not in the same plane. The bottom edge of the Z-shape is riveted to the axial end face of the mounting bracket 7 by rivets 14. The lower left positioning plate 2 and the upper left positioning plate 1 are not parallel in space. The lower left positioning plate 2 is trihedral, with one side forming a reinforcing rib and another side riveted to the circumferential surface of the mounting bracket 7 by rivets 14. The last side is connected to the top edge of the upper left positioning plate 1 by hexagonal flat head bolts 11 and hexagonal groove nuts 12.

[0023] The upper right positioning plate 3 is L-shaped and is divided into a vertical side and a horizontal side. The vertical side is riveted to the circumferential surface of the rear bracket assembly 8 by rivets 14. The lower right positioning plate 4 and the upper right positioning plate 3 are not parallel in space. The lower right positioning plate 4 is Z-shaped. The top and bottom edges of the Z-shape are parallel but not in the same plane. The top edge of the Z-shape is riveted to the axial end face of the bracket assembly 8 by rivets 14. The bottom edge of the Z-shape is connected to the horizontal side of the upper right positioning plate 3 by hexagonal flat head bolts 11 and hexagonal groove nuts 1.

[0024] The pull rod sleeve 6 is a hollow tube with internal threads and open at both ends. The first axial end of the pull rod 5 is a pull rod ring 10, and the second axial end has external threads. Two pull rods 5 are connected to the two ends of the pull rod sleeve 6 through the external threads at their second axial ends. The pull rod ring 10 of one pull rod 5 is positioned between the bottom edge of the upper left positioning plate 1 and one surface of the lower left positioning plate 2, and a hexagonal flat-head bolt 11 passes through the annular hole of the pull rod ring 10. The pull rod ring 10 of the other pull rod 5 is positioned between the horizontal side of the upper right positioning plate 3 and the bottom edge of the lower right positioning plate 4, and a hexagonal flat-head bolt 11 passes through the annular hole of the pull rod ring 10. Each of the pull rods 5 and the pull rod sleeve 6 has an outer hexagonal cube, and each of the six surfaces of the outer hexagonal cube has blind holes for inserting tools such as sticks or rods to fix the pull rod 5 or the pull rod sleeve 6. The hexagonal flat head bolt 11 is also connected to a ball bushing 9 and a bushing 13, with the ball bushing 9 placed in the annular hole of the tie rod ring 10.

[0025] like Figure 5 A limiting groove 15 is opened on the axial end face (upper end face in the figure) of the mounting bracket 7, and the side wall of the limiting groove 15 forms an obtuse angle with the bottom of the groove. Multiple limiting grooves 15 are distributed on the same circumference of the axial end face of the mounting bracket 7 at equal included angles. like Figure 6 The rear bracket assembly 8 has triangular protrusions 16 on its axial end face (lower end face in the figure). Multiple triangular protrusions 16 are distributed at equal angles on the same circumference of the axial end face of the rear bracket assembly 8. The rear bracket assembly 8 is fitted into the limiting groove 15 of the mounting bracket 7 via the triangular protrusions 16. Figure 3 As shown, a sealing ring 17 is provided on the axial end face of the rear bracket assembly 8 away from the mounting bracket 7. When the rear bracket assembly 8 is in contact with the engine, the sealing ring 17 serves to prevent air leakage.

[0026] The method for adjusting the installation gap between the annular radiator and the engine using the above-mentioned tie rod adjustment device includes the following process: Select any one of the two tie rods 5, use a wrench to hold the outer hexagonal body of the tie rod sleeve 6 to prevent rotation of the tie rod sleeve 6, then use the wrench to hold the outer hexagonal body of the tie rod 5 and rotate the tie rod 5. The relative rotation of the tie rod 5 and the tie rod sleeve 6 causes the tie rod 5 to move axially relative to the tie rod sleeve 6, thereby increasing or decreasing the distance between the tie rod 5 and the tie rod sleeve 6, which in turn drives the mounting bracket 7 and the rear bracket assembly 8 to rotate relative to each other. During the relative rotation, the surface (sloping surface / sloping edge) of each triangular protrusion 16 slides along the side wall (sloping surface / sloping edge) of the limiting groove 15, such as... Figure 7 This causes the rear bracket assembly 8 to move axially relative to the mounting bracket 7, moving away from or closer to the mounting bracket 7, thereby reducing or increasing the installation gap between it and the engine.

[0027] When it is inconvenient to operate the lever 5 or lever sleeve 6 with a wrench, or when there is no suitable wrench, the same operation can be achieved by inserting the lever into the blind hole on the surface of the hexagon.

[0028] The pull rod adjustment device of this utility model is used to adjust the installation gap between the annular radiator and the engine, so that the two are installed more tightly together, and to improve the stress concentration phenomenon caused by parallel installation of the upper left positioning plate 1, lower left positioning plate 2, upper right positioning plate 3, and lower right positioning plate 4 on the mounting bracket 7 through the opening, thus ensuring the stability and reliability of the annular radiator and the pull rod adjustment device.

[0029] In this invention, the left end of the pull rod adjusting device is fixed to the mounting bracket 7 of the annular radiator via the upper left positioning plate 1 and the lower left positioning plate 2, while the right end is mounted on the rear bracket assembly 8 via the upper right positioning plate 3 and the lower right positioning plate 4. The upper left positioning plate 1 and the lower left positioning plate 2, used to fix the pull rod adjusting device to the mounting bracket 7, have different shapes and fixing positions, and are installed in a non-parallel manner. One plate is fixed to the axial end face of the mounting bracket 7, and the other is fixed to the circumferential surface (side wall) of the mounting bracket 7. The upper right positioning plate 3 and the lower right positioning plate 4 are installed on the rear bracket assembly 8 according to the same design concept as the upper left positioning plate 1 and the lower left positioning plate 2. All four positioning plates are riveted to their respective positions using rivets 14. The upper left positioning plate 1 and the lower left positioning plate 2 are connected to the pull rod ring 10 of the pull rod 5 via screws, bolts, bushings 13 and spherical bushings 9, and the upper right positioning plate 3 and the lower right positioning plate 4 are also connected to the pull rod ring 10 of the pull rod 5 in the same way.

[0030] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A rod adjustment device for an annular radiator, the annular radiator comprising a coaxial mounting bracket (7) and a rear bracket assembly (8), characterized in that, The lever adjustment device includes: The upper left positioning plate (1) includes a first part and a second part that are not in the same plane, and the first part is fixed on the axial end face of the mounting bracket (7). The lower left positioning plate (2) includes a first part and a second part that are not in the same plane. The first part is fixed on the circumferential surface of the mounting bracket (7). The lower left positioning plate (2) and the upper left positioning plate (1) are not parallel in space. The second part of the lower left positioning plate (2) is connected to the second part of the upper left positioning plate (1) by bolts and nuts. The upper right positioning plate (3) includes a first part and a second part that are not in the same plane, and the first part is fixed on the circumferential surface of the rear bracket assembly (8). The lower right positioning plate (4) includes a first part and a second part that are not in the same plane. The first part is fixed on the axial end face of the bracket assembly (8) corresponding to the mounting bracket (7). The lower right positioning plate (4) and the upper right positioning plate (3) are not parallel in space. The second part of the lower right positioning plate (4) is connected to the second part of the upper right positioning plate (3) by bolts and nuts. The pull rod sleeve (6) and the pull rod (5) are described. The pull rod sleeve (6) is a hollow tube with internal threads. The first axial end of the pull rod (5) is a pull rod ring (10), and the second axial end has external threads. The two pull rods (5) are connected to the two ends of the pull rod sleeve (6) through the external threads of the second axial end. The pull rod ring (10) of one pull rod (5) is placed between the second part of the upper left positioning plate (1) and the second part of the lower left positioning plate (2), and the bolt passes through the ring hole of the pull rod ring (10). The pull rod ring (10) of the other pull rod (5) is placed between the second part of the upper right positioning plate (3) and the second part of the lower right positioning plate (4), and the bolt passes through the ring hole of the pull rod ring (10).

2. The rod adjusting device for a ring-shaped radiator according to claim 1, characterized in that: The upper left positioning plate (1) is Z-shaped, with the top edge of the Z-shape forming the second part and the bottom edge of the Z-shape forming the first part. The bottom edge of the Z-shape is riveted to the axial end face of the mounting bracket (7) by rivets (14). The lower left positioning plate (2) is trihedral, with two of its faces forming the first part and the second part respectively, and the other face forming a reinforcing rib. The face forming the first part is riveted to the circumferential surface of the mounting bracket (7) by rivets (14), and the face forming the second part is connected to the top edge of the upper left positioning plate (1) by bolts and nuts. The upper right positioning plate (3) is L-shaped, with the vertical side forming the first part and the horizontal side forming the second part. The vertical side is riveted to the circumferential surface of the rear bracket assembly (8) by rivets (14). The lower right positioning plate (4) is Z-shaped, with the top edge of the Z-shape forming the first part and the bottom edge of the Z-shape forming the second part. The top edge of the Z-shape is riveted to the axial end face of the bracket assembly (8) by rivets (14), and the bottom edge of the Z-shape is connected to the horizontal side of the upper right positioning plate (3) by bolts and nuts.

3. The rod adjusting device for a ring-shaped radiator according to claim 1, characterized in that: The tie rod (5) is provided with an outer hexagonal body; The tie rod sleeve (6) is provided with an outer hexagonal body.

4. The rod adjusting device for a ring-shaped radiator according to claim 3, characterized in that: Blind holes are opened on the outer hexagonal surfaces of the pull rod (5) and the pull rod sleeve (6).

5. The rod adjusting device for a ring-shaped radiator according to claim 1, characterized in that: The bolt is also connected to a spherical bushing (9) and a bushing (13), and the spherical bushing (9) is placed in the annular hole of the tie rod ring (10).

6. The rod adjusting device for a ring-shaped radiator according to claim 1, characterized in that: The mounting bracket (7) has a limiting groove (15) on its axial end face, and the side wall of the limiting groove (15) forms an obtuse angle with the bottom of the groove. The rear support assembly (8) is provided with a triangular protrusion (16) on its axial end face, and the rear support assembly (8) is inserted into the limiting groove (15) of the mounting bracket (7) through the triangular protrusion (16) to form a fit.

7. The rod adjusting device for a ring-shaped radiator according to claim 1, characterized in that: There are multiple limiting grooves (15), and they are distributed on the same circumference of the axial end face of the mounting bracket (7) at equal angular intervals. There are multiple triangular protrusions (16), which are distributed at equal angular intervals on the same circumference of the axial end face of the rear support assembly (8).

8. The rod adjusting device for a ring-shaped radiator according to claim 1, characterized in that: A sealing ring (17) is provided on the axial end face of the rear bracket assembly (8) away from the mounting bracket (7).

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