Retaining ring anti-extrusion device, propeller and airplane

Abstract

This application relates to the field of aircraft component technology, and more particularly to a retaining ring anti-detachment device, a propeller, and an aircraft. The retaining ring anti-detachment device includes: a fixing member configured to be inserted into a mounting hole in a mounting base, the fixing member having a first locking hole; a limiting plate disposed at the opening of the retaining ring to expand the retaining ring, the limiting plate having a second locking hole coaxial with the first locking hole; and a locking member connected to the first and second locking holes to fix the limiting plate relative to the fixing member. After the retaining ring is installed on the mounting base, the opening of the retaining ring is fixed by the limiting plate, and the limiting plate is fixed to the fixing member by the locking member, so that the limiting plate always keeps the opening of the retaining ring in an expanded state, allowing the retaining ring to be firmly fixed to the mounting base, preventing the retaining ring from shrinking, and thus preventing the retaining ring from detaching from the mounting base, eliminating safety hazards.

Description

Technical Field

[0001] This application relates to the field of aircraft component technology, and in particular to a retaining ring anti-detachment device, a propeller, and an aircraft. Background Technology

[0002] The retaining ring has an open "C"-shaped structure, designed for convenient assembly and disassembly of aircraft propellers, as well as structural simplicity and reliable strength. The installation method involves first inserting the retaining ring fixing parts into the mounting hole of the mounting base, exposing the annular groove of the mounting base, which is located on the inner wall of the mounting hole. Then, the outer periphery of the retaining ring is inserted into the annular groove of the mounting base. The retaining ring fixing parts are supported below the inner periphery of the retaining ring; that is, the retaining ring fixing parts and the mounting base work together to secure the retaining ring. During normal operation, aircraft propellers are often subjected to the combined effects of centrifugal force and complex working environments. The structure of the retaining ring makes it prone to shrinkage and detachment from the mounting base, posing a safety hazard. Summary of the Invention

[0003] This application provides a retaining ring anti-detachment device, a propeller, and an aircraft to solve the problem in the prior art that the retaining ring is prone to shrinkage during operation and detaches from the mounting base, causing safety hazards.

[0004] On one hand, this application provides a retaining ring anti-dislodgement device, comprising: a fixing member configured to be inserted into a mounting hole of a mounting base, the fixing member having a first locking hole formed thereon; a limiting plate disposed at the opening of the retaining ring to open the retaining ring, the limiting plate having a second locking hole coaxial with the first locking hole; and a locking member connected to the first locking hole and the second locking hole to fix the limiting plate and the fixing member relative to each other.

[0005] Preferably, one end of the limiting plate is inserted into the annular groove on the inner wall of the mounting base, and the end face of the limiting plate is an arc surface, the curvature of which is the same as the curvature of the bottom of the annular groove, so as to fit into the bottom of the annular groove.

[0006] Preferably, under the adjustment of the locking member, the limiting plate can rotate relative to the fixing member around a pivot coaxial with the first locking hole to change the opening degree of the retaining ring.

[0007] Preferably, the locking element includes a threaded sleeve disposed in the first locking hole and a screw threaded to the threaded sleeve.

[0008] Preferably, the second locking hole is formed as a round hole, and the screw includes a head located outside the second locking hole, with the side of the head facing the limiting plate being pressed against the limiting plate.

[0009] Preferably, the fastener includes an mounting part and a pull-out part. The limiting plate and the locking member are both disposed on the mounting part. The pull-out part and the limiting plate are both disposed on the same side of the mounting part. The pull-out part is disposed at the edge of the mounting part on that side to provide mounting space for the limiting plate.

[0010] Preferably, the retaining ring anti-disengagement device also includes a fuse connecting the fixing member and the locking member.

[0011] Preferably, the fixing member has a first mounting hole for connecting one end of the fuse, and the locking member has a second mounting hole for connecting the other end of the fuse.

[0012] On the other hand, this application also provides a propeller, including a mounting base, a retaining ring disposed on the mounting base, and the aforementioned retaining ring anti-dislodgement device. The mounting base has a mounting hole for inserting a fixing member and an annular groove formed on the wall of the mounting hole, and the retaining ring is disposed in the annular groove.

[0013] Furthermore, this application also provides an aircraft, including the aforementioned retaining ring anti-detachment device or the aforementioned propeller.

[0014] The beneficial effects of this application are as follows: After the retaining ring is installed on the mounting base, the opening of the retaining ring is fixed by a limiting plate, and the limiting plate is fixed to the fixing component by a locking device. This ensures that the limiting plate always keeps the opening of the retaining ring in an open state, allowing the retaining ring to be firmly fixed to the mounting base. This prevents the retaining ring from shrinking and thus prevents it from falling off the mounting base, eliminating safety hazards. Furthermore, the limiting plate allows the retaining ring to open and maintain a predetermined angle, allowing the limiting plate to be fully engaged in the annular groove of the mounting base, thereby ensuring the retaining ring is installed correctly.

[0015] The propeller and aircraft provided in this application incorporate all the aforementioned advantages of the retaining ring anti-detachment device as described in this application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or 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 application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A three-dimensional view showing the installation of the base and the retaining ring; Figure 2 The retaining ring anti-detachment device provided in the embodiments of this application and Figure 1 A three-dimensional view of the mounting base and retaining ring fitting together; Figure 3 The retaining ring anti-detachment device provided in the embodiments of this application and Figure 1 A 3D diagram showing the fit of the retaining ring in the middle; Figure 4 for Figure 3 A schematic diagram of the structure with an added fuse; Figure 5 for Figure 4 Top view; Figure 6 A perspective view of the retaining ring anti-detachment device provided in the embodiments of this application; and Figure 7 for Figure 6 A perspective view of the locking mechanism of the center retaining ring anti-loosening device.

[0018] Figure label: 10. Fixing component; 11. Mounting part; 111. First locking hole; 12. Pull-out part; 121. Pull-out hole; 20. Limiting plate; 21. Second locking hole; 30. Locking component; 31. Screw sleeve; 32. Screw; 321. Head; 3211. Second mounting hole; 322. Rod part; 40. Fuse; 8. Mounting base; 81. Mounting hole; 82. Annular groove; 9. Retaining ring. Detailed Implementation

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

[0020] The following is combined with Figures 1 to 7 This application describes a retaining ring anti-detachment device, comprising: a fixing member 10, configured to be inserted into a mounting hole 81 of a mounting base 8, the fixing member 10 having a first locking hole 111; a limiting plate 20, disposed at the opening of the retaining ring 9 to open the retaining ring 9, the limiting plate 20 having a second locking hole 21 coaxial with the first locking hole 111; and a locking member 30, connected to the first locking hole 111 and the second locking hole 21 to fix the limiting plate 20 relative to the fixing member 10.

[0021] The retaining ring 9 is a C-shaped ring structure with an opening. After its outer periphery is installed in the annular groove 82 of the mounting base 8, the top surface of the mounting part 11 of the fixing member 10 (described in detail later) contacts the bottom surface of the inner periphery of the retaining ring 9. The limiting plate 20 provided on the fixing member 10 opens the opening of the retaining ring 9, so that the retaining ring 9 can be kept fixed in the annular groove 82 of the mounting base 8, preventing the opening of the retaining ring 9 from shrinking, thereby preventing the retaining ring 9 from falling off the mounting base 8, and ensuring that the opening angle of the retaining ring 9 is appropriate, so that it can be inserted into the annular groove 82 of the mounting base 8 to the maximum extent, thus ensuring that the retaining ring 9 is installed in place.

[0022] Please refer to Figure 2 , Figure 3 and Figure 5 ,in, Figure 2 This is a perspective view showing the cooperation between the retaining ring anti-detachment device provided in the embodiment of this application and the mounting base 8 and the retaining ring 9. Figure 3 This is a perspective view of the retaining ring anti-dislodgement device and the retaining ring 9 provided in the embodiments of this application. Figure 5 This is a top view of the retaining ring anti-detachment device provided in the embodiment of this application.

[0023] In some embodiments provided in this application, one end of the limiting plate 20 is inserted into the annular groove 82 of the inner wall of the mounting base 8, and the end face of the limiting plate 20 is an arc surface, the curvature of which is the same as the curvature of the bottom of the annular groove 82, so as to fit into the bottom of the annular groove 82.

[0024] One end of the limiting plate 20 is located in the annular groove 82 of the mounting base 8. The limiting plate 20 is fixed to the fixing member 10 by the annular groove 82 and the locking member 30. The end face of the limiting plate 20 located in the annular groove 82 can fit against the arc-shaped groove surface of the annular groove 82 to increase the contact area between the limiting plate 20 and the mounting base 8, thereby improving the stability of the limiting plate 20 and enabling it to keep the retaining ring 9 in the open state.

[0025] Specifically, the thickness of the limiting plate 20 is the same as the thickness of the annular groove 82, so that the limiting plate 20 can be inserted into the arc groove, increasing the stability of the limiting plate 20.

[0026] In other embodiments, under the adjustment of the locking member 30, the limiting plate 20 can rotate relative to the fixing member 10 around a pivot coaxial with the first locking hole 111 to change the opening degree of the retaining ring 9. That is, when the locking member 30 is not locking the limiting plate 20, the limiting plate 20 can rotate. Different rotation angles can make the opening degree of the retaining ring 9 different. Thus, by rotating the limiting plate 20, it can accommodate retaining rings 9 of different sizes or mounting bases 8 with annular grooves 82 of different sizes. In this embodiment, the end face of the limiting plate 20 at one end of the annular groove 82 is in a non-contact state with the arc-shaped bottom of the annular groove 82. That is, a gap is formed between the end face of the limiting plate 20 and the arc-shaped bottom of the annular groove 82. This gap is used to prevent the end of the limiting plate 20 from being blocked by the bottom of the annular groove 82 when the limiting plate 20 rotates, thus ensuring that the limiting plate 20 can rotate smoothly.

[0027] Please refer to Figure 4 and Figure 7 ,in, Figure 4 This application provides a schematic diagram of the structure of the retaining ring anti-detachment device. Figure 7 This is a perspective view of the locking element 30.

[0028] In some embodiments provided in this application, the locking member 30 includes a threaded sleeve 31 disposed in the first locking hole 111 and a screw 32 threadedly connected to the threaded sleeve 31.

[0029] The inner wall of the threaded sleeve 31 is threaded for threaded connection with the screw 32. This eliminates the need for threads on the inner wall of the second locking hole 21, simplifying manufacturing. The locking member 30 secures the limiting plate 20 to the fixing member 10 by screwing it in, allowing for gradual adjustment of the pressure applied to the limiting plate 20 and preventing stress that could damage the limiting plate 20.

[0030] Please continue reading. Figure 4 and Figure 7 In some embodiments provided in this application, the second locking hole 21 is formed as a round hole, and the screw 32 includes a head 321 located outside the second locking hole 21, with the side of the head 321 facing the limiting plate 20 pressed against the limiting plate 20.

[0031] The head 321 is cylindrical, and its outer diameter is larger than the diameter of the first locking hole 111 and the second locking hole 21. This prevents the head 321 from entering the first locking hole 111 and the second locking hole 21, so that the bottom surface of the head 321 can fit against the top surface of the limiting plate 20, thereby pressing the limiting plate 20 onto the fixing member 10.

[0032] Specifically, the screw 32 also includes a shank 322 coaxially connected to the head 321. The two can be integrally formed. The outer circumference of the shank 322 is threaded for screwing into the sleeve 31. The first locking hole 111 is a threaded hole. Both the inner and outer walls of the sleeve 31 are threaded, and the sleeve 31 is threaded into the first locking hole 111. The sleeve 31 can be a locking type wire thread sleeve.

[0033] Please refer to Figures 2 to 6 ,in, Figure 6 This is a perspective view of the retaining ring anti-detachment device provided in the embodiments of this application.

[0034] In some embodiments provided in this application, the fastener 10 includes an mounting portion 11 and a pull-out portion 12. The limiting plate 20 and the locking member 30 are both disposed on the mounting portion 11. The pull-out portion 12 and the limiting plate 20 are both disposed on the same side of the mounting portion 11. The pull-out portion 12 is disposed at the edge position on that side of the mounting portion 11 to provide mounting space for the limiting plate 20.

[0035] The top edge of the mounting portion 11 abuts against the bottom surface of the inner circumference of the retaining ring 9 to fix the retaining ring 9 in the annular groove 82 of the mounting base 8. The pull-out portion 12 is used to apply force to pull the fastener 10 out of the mounting hole 81 of the mounting base 8 after the retaining ring 9 is removed, thereby separating the fastener 10 from the mounting base 8. The pull-out portion 12 occupies a portion of the space on the top surface of the mounting portion 11. To provide sufficient space for the positioning plate 20, the pull-out portion 12 is located at the edge of the top surface of the mounting portion 11, thereby providing installation space for the positioning plate 20.

[0036] Specifically, the pull-out part 12 is provided with a pull-out hole 121 for the operator's fingers to pass through or for other hook-shaped tools to pass through, so as to facilitate the application of force to the pull-out part 12, and then pull the entire fixing member 10 out of the mounting hole 81 of the mounting base 8 through the pull-out part 12.

[0037] Please refer to Figure 4 and Figure 5 In some embodiments provided in this application, the retaining ring anti-dislodgement device further includes a fuse 40 connecting the fixing member 10 and the locking member 30.

[0038] The fixing member 10 is fixed relative to the mounting base, and the locking member 30 can rotate relative to the fixing member 10. After the locking member 30 presses the limiting plate 20 onto the fixing member 10, in order to prevent the limiting plate 20 from loosening relative to the fixing member 10 due to the rotation of the locking member 30, after the locking member 30 is screwed on to press the limiting plate 20 onto the fixing member 10, a fuse 40 is connected between the locking member 30 and the fixing member 10, and the locking member 30 is fixed relative to the fixing member 10 through the fuse 40.

[0039] Please continue reading. Figure 4 and Figure 5 In some embodiments provided in this application, the fixing member 10 is provided with a first mounting hole (not shown in the figure) for connecting one end of the fuse 40, and the locking member 30 is provided with a second mounting hole 3211 for connecting the other end of the fuse 40.

[0040] To facilitate the fixing of the fuse 40, a first mounting hole is provided on the fixing member 10, and a second mounting hole 3211 is provided on the locking member 30. One end of the fuse 40 passes through the first mounting hole and is tightened and fixed, and the other end passes through the second mounting hole 3211 and is tightened and fixed.

[0041] Specifically, the first mounting hole is formed on the pull-out portion 12 of the fixing member 10. The structure of the pull-out portion 12 facilitates the setting of the first mounting hole. The second mounting hole 3211 is formed on the head 321 of the screw 32 of the locking member 30. The head 321 protrudes upward from the mounting portion 11 of the fixing member 10, which facilitates the connection of the fuse 40.

[0042] This application embodiment also provides a propeller, including a mounting base 8, a retaining ring 9 disposed on the mounting base 8, and the aforementioned retaining ring anti-dislodgement device. The mounting base 8 has a mounting hole 81 for inserting a fixing member 10 and an annular groove 82 formed on the hole wall of the mounting hole 81. The retaining ring 9 is disposed in the annular groove 82.

[0043] It should be noted that the propeller includes a retaining ring anti-detachment device, which also includes all the advantages of the retaining ring anti-detachment device mentioned above, and will not be repeated here.

[0044] This application also provides an aircraft, including the aforementioned retaining ring anti-detachment device or the aforementioned propeller.

[0045] It should be noted that the aircraft includes a retaining ring anti-detachment device, which also includes all the advantages of the retaining ring anti-detachment device mentioned above, and will not be repeated here.

[0046] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, the term "some embodiments," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A retaining ring anti-detachment device, characterized in that, include: The fastener is configured to be inserted into the mounting hole of the mounting base, and the fastener has a first locking hole formed thereon; A limiting plate is provided at the opening of the retaining ring to open the retaining ring. The limiting plate has a second locking hole coaxial with the first locking hole. as well as A locking element is connected to the first locking hole and the second locking hole to fix the limiting plate relative to the fixing element.

2. The retaining ring anti-detachment device according to claim 1, characterized in that, One end of the limiting plate is inserted into the annular groove in the inner wall of the mounting base, and the end face of the limiting plate is an arc surface, the curvature of which is the same as the curvature of the bottom of the annular groove, so as to fit into the bottom of the annular groove.

3. The retaining ring anti-detachment device according to claim 1, characterized in that, With the adjustment of the locking member, the limiting plate can rotate relative to the fixing member about a pivot coaxial with the first locking hole, so as to change the opening degree of the retaining ring opening.

4. The retaining ring anti-detachment device according to claim 1, characterized in that, The locking component includes a threaded sleeve disposed in the first locking hole and a screw threadedly connected to the threaded sleeve.

5. The retaining ring anti-detachment device according to claim 4, characterized in that, The second locking hole is formed as a round hole, and the screw includes a head located outside the second locking hole, with the side of the head facing the limiting plate pressed against the limiting plate.

6. The retaining ring anti-detachment device according to claim 1, characterized in that, The fastener includes an mounting part and a pull-out part. The limiting plate and the locking member are both disposed on the mounting part. The pull-out part and the limiting plate are both disposed on the same side of the mounting part. The pull-out part is disposed at the edge position on that side of the mounting part to provide mounting space for the limiting plate.

7. The retaining ring anti-detachment device according to claim 1, characterized in that, The retaining ring anti-disengagement device also includes a fuse connecting the fixing member and the locking member.

8. The retaining ring anti-detachment device according to claim 7, characterized in that, The fixing member has a first mounting hole for connecting one end of the fuse, and the locking member has a second mounting hole for connecting the other end of the fuse.

9. A propeller, characterized in that, The device includes a mounting base, a retaining ring disposed on the mounting base, and a retaining ring anti-dislodgement device according to any one of claims 1 to 8, wherein the mounting base has a mounting hole for inserting the fastener and an annular groove formed on the wall of the mounting hole, and the retaining ring is disposed in the annular groove.

10. An aircraft, characterized in that, It includes the retaining ring anti-detachment device according to any one of claims 1 to 8 or the propeller according to claim 9.

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