Aircraft support seat with positioning structure

Abstract

This utility model belongs to the field of aviation parts technology, and in particular to an aviation support base with a positioning structure. It includes a bearing housing body, comprising: a lower bearing housing and an upper bearing housing fixed by long bolts; a rotating sleeve in which the load-bearing drive shaft passes and is fixed; and positioning clamping rings clamped at both ends of the bearing housing body, with the rotating sleeve passing through the positioning clamping rings; and a fixing edge fixed to the bottom end of the positioning clamping rings, the fixing edge having fixing holes for fixing the fixing edge to a fixing surface. This utility model, with its positioning clamping rings clamping at both ends of the bearing housing body and the fixing edge fixed to the fixing surface through fixing holes, enhances the stability of the aviation support base under heavy loads, effectively coping with the stress generated by the high-speed rotation of the drive shaft. Simultaneously, the structural design facilitates installation and features convenient use and high stability.

Description

Technical Field

[0001] This utility model belongs to the field of aviation parts technology, specifically relating to an aviation support seat with a positioning structure. Background Technology

[0002] Aircraft bearing housings are key components used to support and fix bearings in aviation equipment. They are mainly used in core systems such as aircraft engines, landing gear, and wing control surfaces. Their design and manufacturing must meet stringent requirements for high temperature, high speed, high load, and long service life, which are directly related to flight safety and equipment reliability.

[0003] Currently, different aircraft bearing housings are installed in different locations, but most are bolted connections. For example, vertical bearing housings typically use multiple symmetrically distributed bolts to connect and fix the surface.

[0004] For example, in the prior art, Chinese utility model patent with authorization announcement number CN222863922U discloses a "bearing seat with dustproof function", which includes a mounting base and a mounting top. The mounting top is fixedly mounted on the top of the mounting base by bolts. A receiving cavity is formed between the mounting base and the mounting top, and a rotating shaft is rotatably inserted inside the receiving cavity. Positioning rings are provided on both sides of the mounting base. The positioning rings are fixedly connected to the rotating shaft, and fan blades are fixedly connected to the outer ring of the positioning rings.

[0005] While existing bearing housings, including those mentioned above, can meet general usage requirements, they do not offer good stability under heavy loads. They are only secured by bolts at the bottom, and during operation, the high-speed rotation of the drive shaft generates high centrifugal force, accompanied by vibration. This causes the bearing housing to withstand high axial and radial stresses, affecting the stability of the installation.

[0006] To address the aforementioned issues, this application proposes an aviation support base with a positioning structure. Utility Model Content

[0007] To address the aforementioned problems in the existing technology, this utility model provides an aviation support base with a positioning structure, which is convenient to use and has high stability.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an aviation support base with a positioning structure, comprising a bearing housing body, wherein the bearing housing body includes:

[0009] The lower bearing seat and the upper bearing seat are fixed together by long bolts, forming a circular rotational space between them; and

[0010] A rotating sleeve passing through the rotation space, with the load's drive shaft passing through and fixed inside the rotating sleeve, and further comprising:

[0011] Positioning clamping rings are clamped at both ends of the bearing housing body, and the rotating sleeve passes through the positioning clamping rings; and

[0012] A fixing edge is fixed to the bottom end of the positioning clamping ring. The fixing edge is provided with a fixing hole for fixing the fixing edge to the fixing surface.

[0013] Preferably, the outer diameter of the rotating sleeve is adapted to the inner diameter of the positioning clamping ring.

[0014] Preferably, it further includes:

[0015] The positioning clamping ring is fixed to the end of the bearing seat body by means of the fasteners evenly distributed along the circumference.

[0016] Preferably, the fixing member is a countersunk screw, a countersunk hole is provided on the positioning clamping ring, and threaded holes are provided on both the lower bearing seat and the upper bearing seat. The fixing member passes through the countersunk hole and is threadedly engaged with the threaded hole.

[0017] Preferably, it further includes:

[0018] The positioning protrusions are evenly distributed along the circumference and are fixed to the positioning clamping ring. Positioning holes that are adapted to the positioning protrusions are provided on both the lower bearing seat and the upper bearing seat.

[0019] Preferably, the end of the positioning protrusion is chamfered.

[0020] Preferably, it further includes:

[0021] Positioning protrusions are symmetrically fixed to the inner wall of the rotating sleeve.

[0022] Preferably, it further includes:

[0023] A dustproof plate is fixed to the tail end of the rotating sleeve. The dustproof plate has a main mounting hole for connecting the rotating sleeve and a secondary connecting hole for connecting the load drive shaft.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] This utility model enhances the stability of the aviation support under heavy load by using positioning clamping rings to clamp and install them at both ends of the bearing housing body, and fixing the fixed side to the fixed surface through fixing holes. It effectively copes with the stress generated by the high-speed rotation of the drive shaft. At the same time, the structural design is easy to install and features convenient use and high stability.

[0026] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the isometric structure of the positioning clamping ring in this utility model;

[0030] Figure 3 This is a schematic diagram of the isometric structure of the positioning protrusion in this utility model;

[0031] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the diagram;

[0032] Figure 5 This is an isometric structural diagram of the dustproof plate in this utility model.

[0033] In the diagram: 1. Bearing housing body; 11. Lower bearing housing; 12. Upper bearing housing; 121. Threaded hole; 122. Positioning hole; 13. Long bolt; 14. Rotating sleeve; 141. Positioning protrusion; 2. Positioning clamping ring; 21. Fixed edge; 211. Fixed hole; 22. Countersunk hole; 23. Positioning protrusion; 231. Chamfer; 3. Fixing component; 4. Dustproof plate; 41. Main mounting hole; 42. Secondary connecting hole. Detailed Implementation

[0034] 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.

[0035] Please see Figures 1-5The present invention provides the following technical solution: an aviation support seat with a positioning structure, including a bearing seat body 1, the bearing seat body 1 including: a lower bearing seat 11 and an upper bearing seat 12 fixed by long bolts 13 and a rotating sleeve 14, a circular rotation space is formed between the lower bearing seat 11 and the upper bearing seat 12, the rotating sleeve 14 passes through the rotation space, the drive shaft of the load passes through and is fixed in the rotating sleeve 14, and also includes: positioning clamping rings 2 clamped at both ends of the bearing seat body 1 and a fixing edge 21 fixed at the bottom end of the positioning clamping rings 2.

[0036] Furthermore, by Figure 1 As shown in this embodiment, the rotating sleeve 14 passes through the positioning clamping ring 2, and the fixed side 21 is provided with a fixing hole 211 for fixing the fixed side 21 to the fixing surface. With the above solution, in use, the fixed side 21 is first fixed to the fixing surface with bolts through the fixing hole 211 on the fixed side 21, thereby realizing the installation and fixation of the entire bearing housing body 1. The positioning clamping ring 2 is clamped at both ends of the bearing housing body 1, and the rotating sleeve 14 passes through the positioning clamping ring 2. In this way, the positioning clamping ring 2 can play a positioning and clamping role for the bearing housing body 1, restricting the displacement of the bearing housing body 1 in the horizontal direction and ensuring the accuracy of its position.

[0037] The lower bearing seat 11 and the upper bearing seat 12 are fixedly connected by long bolts 13, forming a circular rotation space between them, which provides a place for the rotating sleeve 14 to rotate. The drive shaft of the load passes through and is fixed inside the rotating sleeve 14. When the drive shaft is subjected to external driving torque, it will drive the rotating sleeve 14 to rotate in the rotation space.

[0038] Due to the presence of the positioning clamping ring 2, the radial position of the rotating sleeve 14 is strictly limited during rotation, preventing any deviation and ensuring the stability and accuracy of the drive shaft rotation.

[0039] Meanwhile, the cooperation between the positioning clamping ring 2 and the bearing housing body 1, as well as the fixed connection between the fixed edge 21 and the fixed surface, enables the entire bearing housing body 1 to withstand various loads transmitted from the drive shaft, including radial loads and axial loads. When bearing radial loads, the rotation space formed by the lower bearing housing 11 and the upper bearing housing 12, as well as the rotating sleeve 14, jointly bear the load, distributing the load to the positioning clamping ring 2 and the fixed edge 21, and finally transmitting it to the fixed surface. When bearing axial loads, the positioning clamping ring 2 can play a certain axial limiting role on the rotating sleeve 14, preventing it from axially moving and ensuring the stability of the drive shaft in the axial direction.

[0040] In summary, the aviation support base achieves positioning and fixing of the bearing housing body 1 through the positioning clamping ring 2 and the fixed edge 21, and achieves rotational support of the transmission shaft through the cooperation of the lower bearing seat 11, the upper bearing seat 12 and the rotating sleeve 14, thereby ensuring stable and reliable operation in aviation equipment and guaranteeing the normal rotation of the transmission shaft and load transmission.

[0041] Preferably, by Figure 1 As shown in this embodiment, the outer diameter of the rotating sleeve 14 is matched with the inner diameter of the positioning clamping ring 2. With the above solution, the matched size parameters ensure that the rotating sleeve 14 maintains coaxiality in the positioning clamping ring 2 during use, avoiding radial runout caused by installation deviation.

[0042] When the transmission bearing is subjected to radial load, the matching annular contact surface will uniformly transfer the load to the positioning clamping ring 2 in a cosine distribution, reducing local stress concentration.

[0043] Preferably, by Figure 1 As shown, in this embodiment, it also includes: a fixing member 3 evenly distributed along the circumference. The positioning clamping ring 2 is fixed to the end of the bearing seat body 1 by the fixing member 3. After adopting the above solution, when in use, the positioning clamping ring 2 and the bearing seat body 1 are fixed by multiple fixing members 3 evenly distributed along the circumference. The positioning clamping ring 2 is subjected to uniform force at all points, reducing local stress concentration.

[0044] In addition, the positioning clamping ring 2 can further improve the stability of the connection between the lower bearing seat 11 and the upper bearing seat 12, and effectively enhance the radial load resistance.

[0045] Optionally, by Figures 1-3 As shown in this embodiment, the fixing member 3 is a countersunk screw. A countersunk hole 22 is provided on the positioning clamping ring 2, and threaded holes 121 are provided on both the lower bearing seat 11 and the upper bearing seat 12. The fixing member 3 passes through the countersunk hole 22 and is threaded into the threaded hole 121. With the above solution, it is convenient to install and fix the positioning clamping ring 2 during use. Under the premise of ensuring the installation stability of the positioning clamping ring 2, it is also convenient to disassemble and repair the positioning clamping ring 2.

[0046] Preferably, by Figures 1-3 As shown, this embodiment also includes: positioning protrusions 23 evenly distributed along the circumference, the positioning protrusions 23 being fixed to the positioning clamping ring 2, and positioning holes 122 adapted to the positioning protrusions 23 being provided on both the lower bearing seat 11 and the upper bearing seat 12. With the above solution, during use, the positioning protrusions 23 (usually cylindrical) and the positioning holes 122 of the bearing seat body 1 (lower bearing seat 11 and upper bearing seat 12) form a precise clearance fit.

[0047] It is used to further position the positioning clamping ring 2 and the bearing housing body 1, reduce assembly errors, and improve load resistance.

[0048] Preferably, by Figures 1-4 As shown in this embodiment, the end of the positioning protrusion 23 is machined with a chamfer 231. With the above solution, the chamfer 231 has guiding and self-calibrating functions during use. When assembling the positioning clamping ring 2 and the bearing seat body 1, even if there is a slight assembly deviation between the positioning protrusion 23 and the positioning hole 122, the chamfer 231 can automatically make the positioning protrusion 23 and the positioning hole 122 coaxially installed, reducing assembly errors and avoiding radial runout caused by installation deviation.

[0049] Preferably, by Figure 1 As shown, in this embodiment, it also includes: positioning protrusions 141 symmetrically fixed to the inner wall of the rotating sleeve 14. With the above solution, when in use, a positioning groove that matches the positioning protrusions 141 is opened in advance at the corresponding position of the transmission shaft.

[0050] When assembling the drive shaft, the positioning protrusion 141 is embedded in the positioning groove on the drive shaft to position the drive shaft and reduce installation errors.

[0051] In addition, when the drive shaft rotates, it transmits torque through the cooperation of the positioning protrusion 141 and the positioning groove, so that the drive shaft drives the rotating sleeve 14 to rotate coaxially.

[0052] Preferably, by Figure 1 and Figure 5 As shown, in this embodiment, it also includes a dustproof plate 4 fixed to the tail end of the rotating sleeve 14. The dustproof plate 4 has a main mounting hole 41 for connecting the rotating sleeve 14 and a secondary connecting hole 42 for connecting the load drive shaft. With the above solution, when in use, the dustproof plate 4 is simultaneously fixed to the rotating sleeve 14 and the drive shaft with bolts, which further improves the stability and coaxiality of the assembly of the rotating sleeve 14 and the drive shaft.

[0053] In addition, the dustproof plate 4 can effectively prevent external impurities from entering the rotating sleeve 14, thus preventing the accumulation of impurities from aggravating the wear of the drive shaft and affecting its normal operation.

[0054] Components not described in detail in this article are existing technologies.

[0055] The working principle and usage process of this utility model are as follows: The bearing housing body 1 of this utility model is first fixed to the fixing surface by bolts through the fixing hole 211 on the fixing edge 21, thereby realizing the installation and fixing of the entire bearing housing body 1. The positioning clamping ring 2 is fixedly connected to the bearing housing body 1 by the fixing part 3, and the rotating sleeve 14 passes through the positioning clamping ring 2. In this way, the positioning clamping ring 2 can play a positioning and clamping role on the bearing housing body 1, restricting the displacement of the bearing housing body 1 in the horizontal direction and ensuring the accuracy of its position.

[0056] The lower bearing seat 11 and the upper bearing seat 12 are fixedly connected by long bolts 13, forming a circular rotation space between them, which provides a place for the rotating sleeve 14 to rotate. The drive shaft of the load passes through and is fixed inside the rotating sleeve 14. When the drive shaft is subjected to external driving torque, it will drive the rotating sleeve 14 to rotate in the rotation space.

[0057] Due to the presence of the positioning clamping ring 2, the radial position of the rotating sleeve 14 is strictly limited during rotation, and it will not deviate, thus ensuring the stability and accuracy of the drive shaft rotation.

[0058] Meanwhile, the cooperation between the positioning clamping ring 2 and the bearing housing body 1, as well as the fixed connection between the fixed edge 21 and the fixed surface, enable the entire bearing housing body 1 to withstand various loads transmitted from the drive shaft, including radial loads and axial loads. When bearing radial loads, the rotation space formed by the lower bearing housing 11 and the upper bearing housing 12, as well as the rotating sleeve 14, jointly bear the load, distributing the load to the positioning clamping ring 2 and the fixed edge 21, and finally transmitting it to the fixed surface. When bearing axial loads, the positioning clamping ring 2 can play a certain axial limiting role on the rotating sleeve 14, preventing it from axially moving and ensuring the stability of the drive shaft in the axial direction.

[0059] In summary, the aviation support base achieves positioning and fixing of the bearing housing body 1 through the positioning clamping ring 2 and the fixed edge 21, and achieves rotational support of the transmission shaft through the cooperation of the lower bearing seat 11, the upper bearing seat 12 and the rotating sleeve 14, thereby ensuring stable and reliable operation in aviation equipment and guaranteeing the normal rotation of the transmission shaft and load transmission.

[0060] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An aircraft support base with a positioning structure, comprising a bearing housing body (1), the bearing housing body (1) comprising: The lower bearing seat (11) and the upper bearing seat (12) are fixed by long bolts (13), forming a circular rotational space between the lower bearing seat (11) and the upper bearing seat (12); and A rotating sleeve (14) is inserted into the rotation space, and the drive shaft of the load is inserted and fixed inside the rotating sleeve (14). The feature is that it further includes: Positioning clamping rings (2) are clamped at both ends of the bearing housing body (1), and the rotating sleeve (14) passes through the positioning clamping rings (2); and A fixing edge (21) is fixed to the bottom end of the positioning clamping ring (2), and the fixing edge (21) is provided with a fixing hole (211) for fixing the fixing edge (21) to the fixing surface; The outer diameter of the rotating sleeve (14) is adapted to the inner diameter of the positioning clamping ring (2); Also includes: The positioning clamping ring (2) is fixed to the end of the bearing seat body (1) by means of the fixing member (3) evenly distributed along the circumference.

2. The aircraft support base with a positioning structure according to claim 1, characterized in that: The fixing member (3) is a countersunk screw. A countersunk hole (22) is provided on the positioning clamping ring (2). Threaded holes (121) are provided on both the lower bearing seat (11) and the upper bearing seat (12). The fixing member (3) passes through the countersunk hole (22) and is threaded into the threaded hole (121).

3. An aircraft support base with a positioning structure according to claim 1, characterized in that: Also includes: The positioning protrusions (23) are evenly distributed along the circumference. The positioning protrusions (23) are fixed to the positioning clamping ring (2). Positioning holes (122) that are adapted to the positioning protrusions (23) are provided on both the lower bearing seat (11) and the upper bearing seat (12).

4. An aircraft support base with a positioning structure according to claim 3, characterized in that: The end of the positioning protrusion (23) is machined with a chamfer (231).

5. An aircraft support base with a positioning structure according to claim 1, characterized in that: Also includes: Positioning protrusions (141) are symmetrically fixed to the inner wall of the rotating sleeve (14).

6. An aircraft support base with a positioning structure according to claim 1, characterized in that: Also includes: A dustproof plate (4) is fixed to the tail end of the rotating sleeve (14). The dustproof plate (4) has a main mounting hole (41) for connecting the rotating sleeve (14) and a secondary connecting hole (42) for connecting the load drive shaft.

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