A large-angle three-dimensional axial compensation device

Abstract

This utility model discloses a large-angle three-dimensional axial compensation device, belonging to the technical field of pipeline functional joints. It includes a threaded hole joint, a bellows, and a through-hole joint. One end of the bellows is connected to the threaded hole joint, and the other end is connected to the through-hole joint. A compensation mechanism is provided inside the bellows; one end of the compensation mechanism is connected to the inside of the threaded hole joint, and the other end is connected to the through-hole joint, to provide axial deflection compensation and expansion / contraction compensation. This utility model improves upon existing engine bleed air and exhaust pipelines, replacing existing compensation connections. It can provide large-angle axial deflection compensation and axial expansion / contraction compensation for engine pipelines, thereby reducing the rigidity of aircraft bleed air and exhaust pipelines, reducing stress on bleed air and exhaust pipelines caused by vibration during operation, and improving aircraft reliability.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipeline functional joints, specifically relating to a large-angle three-dimensional axial compensation device. Background Technology

[0002] In aircraft engine bleed and exhaust pipes, the pipe diameter is generally large, ranging from 80mm to 100mm, which causes the engine to vibrate significantly during operation.

[0003] The current technical approach is to use ball joints to connect the engine bleed air and exhaust pipes to compensate for vibrations during engine and aircraft operation.

[0004] Ball joints generally have large external dimensions, requiring significant naval space for installation. Furthermore, the compensation angle of ball joints typically does not exceed ±6°, and they cannot provide axial expansion / contraction compensation. Utility Model Content

[0005] The purpose of this utility model is to address the above-mentioned shortcomings in the prior art by providing a large-angle three-dimensional axial compensation device to solve the problems that ball joints generally have large outer dimensions, occupy a large amount of cabin space for installation, and the compensation angle of ball joints generally does not exceed ±6°, and cannot provide axial expansion and contraction compensation.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A large-angle three-dimensional axial compensation device includes a threaded hole joint, a bellows, and a through-hole joint;

[0008] One end of the bellows is connected to a threaded hole connector, and the other end of the bellows is connected to a through hole connector. A compensation mechanism is provided inside the bellows. One end of the compensation mechanism is connected to the inside of the threaded hole connector, and the other end of the compensation mechanism is connected to the through hole connector to provide axial deflection compensation and expansion compensation.

[0009] Furthermore, the threaded hole connector has an internal threaded hole.

[0010] Furthermore, the through-hole connector has a light hole inside.

[0011] Furthermore, the two ends of the bellows are respectively connected to the threaded hole joint and the through hole joint by fusion welding.

[0012] Furthermore, the compensation mechanism includes a universal hinge seat, an adjusting screw, and a universal hinge ball joint;

[0013] One end of the universal hinge ball head is a ball head, which is assembled inside the universal hinge seat. The other end of the universal hinge ball head is an external thread, which is assembled into the internal thread hole of the threaded hole connector. One end of the universal hinge seat is a rod-shaped structure with an internal thread hole. The adjusting screw passes through the light hole of the through hole connector and is screwed into the internal thread hole in the universal hinge seat. The screwing depth is adjustable.

[0014] Furthermore, the universal hinge ball head can rotate freely around the center of the ball within the universal hinge seat, with a rotation angle within ±6°.

[0015] Furthermore, the screw shank of the adjusting screw is clearance-fitted with the inner hole of the through-hole connector, allowing the adjusting screw to move axially within the through-hole connector.

[0016] Furthermore, the end faces of the adjusting screw and the universal hinge seat are limited by the two end faces of the inner hole of the through-hole connector, thereby realizing the limiting function of axial compensation.

[0017] The large-angle three-dimensional axial compensation device provided by this utility model has the following beneficial effects:

[0018] This invention improves upon existing engine bleed air and exhaust pipes, replacing existing compensating connections. It provides large-angle axial deflection compensation (±10°) and axial expansion and contraction compensation (0mm to -15mm) for engine pipes, thereby reducing the rigidity of aircraft bleed air and exhaust pipes, reducing the stress on bleed air and exhaust pipes caused by vibration during operation, and improving aircraft reliability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the assembly structure of the large-angle three-dimensional axial compensation device in the embodiment.

[0020] Figure 2 This is a schematic diagram of the structure of the large-angle three-dimensional axial compensation device in the embodiment.

[0021] Among them, 1. Threaded hole connector; 2. Bellows; 3. Through hole connector; 4. Universal hinge seat; 5. Adjusting screw; 6. Universal hinge ball head. Detailed Implementation

[0022] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0023] This embodiment presents a large-angle three-dimensional axial compensation device that improves upon existing compensator connection methods, replacing them to provide axial deflection and axial expansion compensation for the bleed air pipeline. This reduces stress on the bleed air and exhaust pipelines caused by vibration during operation, improving aircraft reliability. Compared to ball joints, it has smaller overall dimensions. Figure 1 and Figure 2 Specifically, it includes:

[0024] Threaded hole connector 1, bellows 2, through hole connector 3;

[0025] In some embodiments, one end of the bellows 2 is connected to the threaded hole connector 1, and the other end of the bellows 2 is connected to the through hole connector 3. A compensation mechanism is provided inside the bellows 2 to provide axial deflection and axial expansion compensation for the air intake pipeline. One end of the compensation mechanism is connected to the inside of the threaded hole connector 1, and the other end of the compensation mechanism is connected to the through hole connector 3 to provide axial deflection compensation and expansion compensation.

[0026] In one specific embodiment, the threaded hole connector 1 has an internal threaded hole, which is used to connect with the compensation mechanism.

[0027] In one specific embodiment, a light hole is provided in the through-hole connector 3, which is used to connect with the compensation mechanism.

[0028] In one specific embodiment, the two ends of the bellows 2 are respectively connected to the threaded hole joint 1 and the through hole joint 3 by fusion welding. The fusion welding is used to achieve the sealing connection function. The bellows 2 has a certain degree of flexibility and can be bent and subjected to shaft end compression and tensile deformation.

[0029] In one specific embodiment, the compensation mechanism includes a universal hinge seat 4, an adjusting screw 5, and a universal hinge ball head 6. The universal hinge seat 4, adjusting screw 5, and universal hinge ball head 6 mainly serve a limiting function.

[0030] One end of the universal hinge ball head 6 is a ball head, which is assembled inside the universal hinge seat 4. The other end of the universal hinge ball head 6 is an external thread, which is assembled into the internal thread hole of the threaded hole connector 1 through the external thread. One end of the universal hinge seat 4 is a rod-shaped structure with an internal thread hole. The adjusting screw 5 passes through the light hole of the through hole connector 3 and is screwed into the internal thread hole in the universal hinge seat 4. The screwing depth is adjustable.

[0031] In one specific embodiment, the universal hinge ball head 6 rotates freely around the center of the ball within the universal hinge seat 4, with a rotation angle within ±6°.

[0032] In one specific embodiment, the screw shank of the adjusting screw 5 is clearance-fitted with the inner hole of the through-hole connector 3, so that the adjusting screw 5 can be axially translated within the through-hole connector 3.

[0033] In one specific embodiment, the end faces of the adjusting screw 5 and the universal hinge seat 4 are limited by the two end faces of the inner hole of the through-hole connector 3, thereby realizing the limiting function of axial compensation.

[0034] In this invention, during specific limiting, the universal hinge ball head 6 and the inner and outer spherical surfaces of the universal hinge seat 4 make contact and cooperate, allowing relative deflection compensation around the center of the ball; the screw rod of the adjusting screw 5 and the inner hole of the through-hole connector 3 are clearance-fitted, allowing the adjusting screw 5 to move axially within the through-hole connector 3. The end faces of the adjusting screw 5 and the universal hinge seat 4 are limited by the two end faces of the through hole of the through-hole connector 3, thereby achieving the limiting function of axial compensation. This invention uses an internal ball hinge to limit the compensation of the bellows 2, connecting the two ends of the bellows and limiting the tensile direction of the bellows 2 while allowing axial expansion and contraction compensation. This provides axial deflection and axial expansion and contraction compensation for the bleed air pipeline, reducing the stress on the bleed air and exhaust pipelines caused by vibration during operation and improving aircraft reliability; it also has a smaller overall dimension compared to a ball joint.

[0035] Although the specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. A large-angle three-dimensional axial compensation device, characterized in that, Includes threaded hole connector (1), bellows (2), and through hole connector (3); One end of the bellows (2) is connected to the threaded hole connector (1), and the other end of the bellows (2) is connected to the through hole connector (3); a compensation mechanism is provided inside the bellows (2), one end of the compensation mechanism is connected to the inside of the threaded hole connector (1), and the other end of the compensation mechanism is connected to the through hole connector (3) to provide axial deflection compensation and expansion compensation.

2. The large-angle three-dimensional axial compensation device according to claim 1, characterized in that, The threaded hole connector (1) has an internal threaded hole.

3. The large-angle three-dimensional axial compensation device according to claim 2, characterized in that, The through-hole connector (3) has a light hole inside.

4. The large-angle three-dimensional axial compensation device according to claim 1, characterized in that, The two ends of the corrugated pipe (2) are respectively connected to the threaded hole joint (1) and the through hole joint (3) by fusion welding.

5. The large-angle three-dimensional axial compensation device according to claim 4, characterized in that, The compensation mechanism includes a universal hinge seat (4), an adjusting screw (5), and a universal hinge ball head (6). One end of the universal hinge ball head (6) is a ball head, which is assembled in the universal hinge seat (4). The other end of the universal hinge ball head (6) is an external thread, which is assembled into the internal thread hole of the threaded hole connector (1) through the external thread. One end of the universal hinge seat (4) is a rod-shaped structure with an internal thread hole. The adjusting screw (5) passes through the light hole of the through hole connector (3) and is screwed into the internal thread hole in the universal hinge seat (4). The screwing depth is adjustable.

6. The large-angle three-dimensional axial compensation device according to claim 5, characterized in that, The universal hinge ball head (6) rotates freely around the center of the ball within the universal hinge seat (4), with a rotation angle within ±6°.

7. The large-angle three-dimensional axial compensation device according to claim 5, characterized in that, The screw rod of the adjusting screw (5) is clearance-fitted with the inner hole of the through-hole connector (3), so that the adjusting screw (5) can be axially translated within the through-hole connector (3).

8. The large-angle three-dimensional axial compensation device according to claim 5, characterized in that, The end faces of the adjusting screw (5) and the universal hinge seat (4) are limited by the two end faces of the inner hole of the through-hole connector (3), thereby realizing the limiting function of axial compensation.

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