Tooth-shaped adjustable vibration reduction joint

Abstract

The utility model belongs to the technical field of aviation, and particularly relates to a tooth-shaped adjustable vibration reduction connector. Comprising a lug and a bottom plate, the lug piece is provided with a lug hole, a flexible ring is sleeved with the lug hole, and a lining is sleeved with the flexible ring. The bottom face of the bottom plate is provided with sawteeth, the sawteeth are matched with the sawteeth of the installation face of the connecting piece and used for adjusting the position of the connector, the bottom plate is provided with a connecting hole, the bolt penetrates through the connecting hole to be connected with the threaded hole of the connecting piece, the diameter of the connecting hole is larger than that of the bolt, the connecting hole is used for adjusting the position of the bottom plate, and then the bolt is meshed with the sawteeth to fix the connector. The tooth-shaped adjustable vibration reduction connector utilizes the characteristics of slow loading and energy absorption of the flexible ring, airflow pulsation transmitted by a pin shaft in an earhole is released point by point, and cracks are reduced. In addition, the toothed bottom surface is connected with the part, so that the contact surface of the joint is large, and the load transfer effect is good.

Description

Technical Field

[0001] This application belongs to the field of aerospace technology, and specifically relates to a toothed adjustable vibration damping joint. Background Technology

[0002] When critical moving parts of an aircraft are subjected to aerodynamic loads during flight, they experience vibration fatigue, making it easy for connecting parts to crack, and airflow pulsation can cause structural damage. Summary of the Invention

[0003] To address the aforementioned problems, this application provides a toothed adjustable vibration damping joint, comprising:

[0004] Earpiece and base plate;

[0005] The ear piece has an ear hole, and a flexible ring is fitted inside the ear hole, with a bushing fitted inside the flexible ring;

[0006] The bottom surface of the base plate has serrations that match the serrations on the mounting surface of the connector for adjusting the joint position. The base plate has connecting holes through which bolts pass to connect with the threaded holes of the connector. The diameter of the connecting holes is larger than the diameter of the bolts for adjusting the position of the base plate.

[0007] Preferably, the inner side of the ear canal is provided with an inner ring groove for accommodating a flexible ring, and the bushing is placed in the inner ring groove.

[0008] Preferably, the opening of the inner ring groove faces radially inward, and the inner ring groove is formed by a retaining spring that is detachably installed next to the ear hole, which facilitates the installation of the flexible ring and the bushing, and restricts the axial displacement of the flexible ring and the bushing.

[0009] Preferably, the flexible ring is made of vulcanized rubber.

[0010] Preferably, the saw teeth include a portion of longitudinal teeth and a portion of transverse teeth.

[0011] Preferably, flanges are provided on both sides of the bushing to restrict the axial displacement of the flexible ring and the bushing.

[0012] The advantages of this application include: the toothed adjustable vibration damping joint of this application can not only adjust the position by the tooth shape, but also achieve the vibration damping effect by the vulcanized rubber and the bushing through the load hysteresis effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a preferred embodiment of the toothed adjustable vibration damping joint of this application;

[0014] Figure 2 This is a cross-sectional view of a preferred embodiment of the toothed adjustable vibration damping joint of this application. Detailed Implementation

[0015] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0016] like Figures 1-2 As shown, this application provides a toothed adjustable vibration damping joint, comprising:

[0017] Earpiece and base plate;

[0018] The ear piece has an ear hole, and a flexible ring 3 is fitted inside the ear hole, with a bushing 4 fitted inside the flexible ring 3;

[0019] The bottom surface of the base plate has serrations that match the serrations 1 on the mounting surface of the connector for adjusting the position of the joint. The base plate has connecting holes through which bolts pass to connect with the threaded holes of the connector. The diameter of the connecting holes is larger than the diameter of the bolts for adjusting the position of the base plate.

[0020] The toothed adjustable vibration damping joint utilizes the slow loading and energy absorption characteristics of the flexible ring, gradually releasing the airflow pulsations transmitted from the pin in the ear hole, reducing crack formation. Furthermore, the toothed bottom surface connects to the parts, resulting in a large contact area and excellent load transfer performance.

[0021] Preferably, the inner side of the ear canal is provided with an inner ring groove for accommodating the flexible ring 3, and the bushing 4 is placed in the inner ring groove.

[0022] In one embodiment, the opening of the inner ring groove faces radially inward, and the inner ring groove is formed by a snap ring that is detachably mounted next to the ear hole, which facilitates the installation of the flexible ring 3 and the bushing 4, and restricts the axial displacement of the flexible ring 3 and the bushing 4.

[0023] Preferably, the flexible ring 3 is made of vulcanized rubber, and the bushing is vulcanized inside the single-ear joint. When the ear plate connecting bolt or shaft pin is loaded, the vibration energy is consumed and the vibration amplitude is reduced through the hysteresis effect of the vulcanized part of the bushing, thus playing a vibration reduction role.

[0024] Preferably, the saw teeth 1 include a portion of longitudinal teeth and a portion of transverse teeth.

[0025] In another embodiment, flanges are provided on both sides of the bushing 4 to restrict the axial displacement of the flexible ring 3 and the bushing 4.

[0026] The advantages of this application include: the toothed adjustable vibration damping joint of this application can not only adjust the position by the tooth shape, but also achieve the vibration damping effect by the vulcanized rubber and the bushing through the load hysteresis effect.

[0027] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A toothed adjustable vibration damping joint, characterized in that, include: Earpiece and base plate; The ear piece has an ear hole, and a flexible ring (3) is fitted inside the ear hole. A bushing (4) is fitted inside the flexible ring (3). The bottom surface of the base plate has serrations that match the serrations (1) on the mounting surface of the connector for adjusting the position of the joint. The base plate has a connecting hole through which bolts pass and connect to the threaded hole of the connector. The diameter of the connecting hole is larger than the diameter of the bolt for adjusting the position of the base plate.

2. The toothed adjustable vibration damping joint as described in claim 1, characterized in that, The inner side of the ear hole is provided with an inner ring groove for accommodating the flexible ring (3), and the bushing (4) is placed in the inner ring groove.

3. The toothed adjustable vibration damping joint as described in claim 2, characterized in that, The opening of the inner ring groove faces radially inward. The inner ring groove is formed by a snap ring that is detachably installed next to the ear hole, which facilitates the installation of the flexible ring (3) and the bushing (4) and restricts the axial displacement of the flexible ring (3) and the bushing (4).

4. The toothed adjustable vibration damping joint as described in claim 1, characterized in that, The flexible ring (3) is made of vulcanized rubber.

5. The toothed adjustable vibration damping joint as described in claim 1, characterized in that, The saw teeth (1) include some longitudinal teeth and some transverse teeth.

6. The toothed adjustable vibration damping joint as described in claim 1, characterized in that, The bushing (4) has flanges on both sides to restrict the axial displacement of the flexible ring (3) and the bushing (4).

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