Air rudder assembly

Abstract

The utility model discloses an air rudder assembly. The technical problem that in the prior art, due to the fact that the precision of a heat-proof layer is low, the forming qualification rate of air rudder products is low is solved. The air rudder assembly is detachably arranged in the heat-proof layer forming mold and comprises a rudder core, the rudder core is provided with a left rudder surface and a right rudder surface which are opposite, and a rudder bottom surface, a rudder leading edge, a rudder top surface and a rear wall surface which are sequentially arranged on the peripheries of the left rudder surface and the right rudder surface, and the rudder bottom surface is provided with a rudder shaft; at least two first connecting parts are arranged on the outer wall of the rudder core, and at least one first connecting part is arranged on the rudder bottom surface; the at least one first connecting part is arranged on the rudder top surface and / or the rear wall surface; the first positioning piece is detachably connected with one first connecting part on the bottom surface of the rudder; and the second positioning piece is detachably connected with at least one first connecting part of the rudder top surface and / or the rear wall surface. The symmetry degree and perpendicularity of the finished rudder shaft can be improved, and the air rudder product forming qualification rate is high.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air rudder assembly forming manufacturing, and particularly relates to an air rudder assembly. BACKGROUND

[0002] The air rudder assembly generally adopts a composite structure of “heat protection + force bearing”, the inner rudder core of the air rudder assembly is a force bearing structure, mainly composed of a metal framework and a rudder shaft. The outer layer of the air rudder assembly is a heat protection structure, the rudder core is wrapped up by a non-metal woven body, and the air rudder assembly is formed into a composite structure product by resin transfer molding (RTM). For the RTM forming mold of the air rudder assembly, there is a relatively mature structure scheme, but in the manufacturing process, the precision of the heat protection layer cannot be effectively guaranteed, and the product forming qualification rate is low. SUMMARY

[0003] To solve the technical problem of low air rudder product forming qualification rate caused by low precision of the heat protection layer covering the rudder core, the application provides an air rudder assembly.

[0004] The application provides an air rudder assembly which can be detachably arranged in a heat protection layer forming mold, and the air rudder assembly comprises:

[0005] a rudder core, the rudder core having opposite left and right rudder surfaces, and a rudder bottom surface, a rudder leading edge, a rudder top surface and a rear wall surface arranged around the left and right rudder surfaces in sequence, and the rudder bottom surface being provided with a rudder shaft;

[0006] at least two first connecting parts are arranged on the outer wall of the rudder core, at least one first connecting part is arranged on the rudder bottom surface, and at least one first connecting part is arranged on the rudder top surface and / or the rear wall surface;

[0007] a first positioning part is detachably connected with one first connecting part of the rudder bottom surface;

[0008] a second positioning part is detachably connected with at least one first connecting part of the rudder top surface and / or the rear wall surface.

[0009] In some embodiments, the first connecting part is a blind hole, the first positioning part is provided with a second connecting part matched with the blind hole, and the second positioning part is provided with a third connecting part matched with the blind hole.

[0010] In some embodiments, the first connecting part is a threaded hole, and the second connecting part is a threaded stud.

[0011] In some embodiments, the inner wall of the side wall of the rudder core where the first connecting part is located is provided with a thickened part, and the size of the thickened part is greater than the size of the first connecting part.

[0012] In some embodiments, the first positioning member comprises a first column, the second connecting part is arranged at one end of the first column, and the first column is provided with a first wrench part at the other end.

[0013] In some embodiments, the first column comprises a cylindrical segment and a conical segment, the cylindrical segment is arranged close to the second connecting part, and the diameter of the conical segment decreases along the direction close to the wrench part.

[0014] In some embodiments, the diameter of the first column is greater than the diameter of the second connecting part, and the end surface of the first column close to the second connecting part is perpendicular to the axis of the second connecting part.

[0015] In some embodiments, the second positioning member comprises a second column, the third connecting part is arranged at one end of the second column, and the first column is provided with a second wrench part at the other end.

[0016] In some embodiments, the bottom surface of the rudder is provided with two first connecting parts, and the two first connecting parts of the bottom surface of the rudder are symmetrically arranged along the axis of the rudder shaft.

[0017] The top surface of the rudder is provided with one first connecting part, and the first connecting part of the top surface of the rudder is symmetrically arranged with one first connecting part of the bottom surface of the rudder along the center line of the rudder core.

[0018] In some embodiments, the rear wall surface is provided with one first connecting part.

[0019] The air rudder assembly provided by one or more embodiments of the present application can meet the requirements of the perpendicularity between the bottom surface of the outer wall of the air rudder assembly and the axial direction of the rudder shaft after the heat-proof layer is arranged on the rudder core, improve the perpendicularity of the rudder shaft of the final product air rudder, balance the spacing between the port rudder surface of the rudder core and the mold and the spacing between the starboard rudder surface and the mold, and improve the uniformity of the heat-proof layer after forming, the symmetry of the heat-proof layer on the rudder core, the symmetry of the final product air rudder, the quality of the finished air rudder, and the product qualification rate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Part of the structure schematic diagram of the air rudder assembly provided with a heat-proof layer in one or more embodiments of the present application is shown.

[0021] Figure 2 The sectional structure schematic diagram of the rudder core in Figure 1 is shown.

[0022] Figure 3 The structure schematic diagram of the first positioning member in one or more embodiments of the present application is shown.

[0023] Figure 4 A structure diagram of the second positioning member in one or more embodiments of the present application is shown

[0024] Figure 5 A structure diagram of the air vane assembly arranged in the heat protection layer forming mold in one or more embodiments of the present application is shown.

[0025] Label explanation: 10 - vane core, 11 - vane bottom surface, 12 - vane leading edge, 13 - vane top surface, 14 - rear wall surface, 15 - vane shaft, 16 - first connecting part, 17 - thickened part, 20 - first positioning member, 21 - second connecting part, 22 - cylindrical section, 23 - conical section, 24 - first wrenching part, 30 - second positioning member, 31 - third connecting part, 32 - second cylinder, 33 - second wrenching part, 40 - heat protection layer, 50 - heat protection layer forming mold. DETAILED DESCRIPTION

[0026] In order for those skilled in the art to which the present application belongs to more clearly understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-5 , the first aspect embodiment of the present application provides an air vane assembly which can be detachably arranged in the heat protection layer forming mold 50. After the heat protection layer forming mold 50 processes the heat protection layer 40 of the air vane assembly, the air vane assembly in the embodiment can be detached from the heat protection layer forming mold 50 for further processing or use.

[0028] The air vane assembly includes a vane core 10, a first positioning member 20 and a second positioning member 30. The vane core 10 is a structural member with a certain thickness. The vane core 10 has opposite left and right vane surfaces, and a vane bottom surface 11, a vane leading edge 12, a vane top surface 13 and a rear wall surface 14 arranged around the left and right vane surfaces in sequence. The vane bottom surface 11 is provided with a vane shaft 15.

[0029] The outer wall of the rudder core 10 is provided with at least two first connecting portions 16: at least one first connecting portion 16 is provided on the rudder bottom surface 11; and at least one first connecting portion 16 is provided on the rudder top surface 13 and / or the rear wall 14. A first positioning member 20 is detachably connected to one of the first connecting portions 16 on the rudder bottom surface 11; and a second positioning member 30 is detachably connected to one of the first connecting portions 16 on the rudder top surface 13 and / or the rear wall 14. In other words, the first positioning member 20 and the second positioning member 30 are located on different outer walls. The rudder core 10 can be placed in a heat-resistant layer forming mold 50. As will be appreciated, the heat-resistant layer forming mold 50 is provided with recesses for accommodating the first and second connecting members.

[0030] The rudder leading edge 12 is designed to directly face high-speed airflow, so it is not provided with the first connecting portion 16 to ensure its integrity. The rudder bottom surface 11, rudder top surface 13, and rear wall 14 are the different side walls of the rudder core 10. After the first connecting portion 16 on the rudder bottom surface 11 connects to the first positioning member 20, the relative position between the rudder bottom surface 11 and the first positioning member 20 remains unchanged. After the first positioning member 20 mates with the corresponding groove in the heat-proof forming mold, it constrains the relative position between the rudder bottom surface 11 and the inner wall of the heat-proof layer forming mold 50. After the heat-proof layer 40 is applied to the rudder core 10, the perpendicularity between the bottom surface of the outer wall of the air rudder assembly and the axial direction of the rudder shaft 15 meets the required level, thereby improving the verticality of the rudder shaft 15 in the final air rudder product.

[0031] The first connecting portion 16 on the rudder top surface 13 and / or the rear wall 14 is connected to the second positioning member 30. After the second positioning member 30 matches the corresponding groove on the heat-proof forming mold, the second positioning member 30 will work together with the first positioning member 20 to further limit the position of the rudder core 10 in the heat-proof forming mold; the first positioning member 20 on the rudder bottom surface 11 will work together with the rudder shaft 15 to position the rudder bottom surface 11 of the rudder core 10 in the mold, so that the distance between the left rudder surface of the rudder core 10 and the mold and the distance between the right rudder surface and the mold are balanced, the heat-proof layer 40 has high uniformity after molding, and the heat-proof layer 40 has high symmetry on the rudder core 10, which can improve the symmetry of the rudder shaft 15 of the final air rudder, thereby improving the quality of the finished air rudder.

[0032] After the heat protection layer 40 is disposed on the rudder core 10 , the air rudder assembly can be removed from the heat protection layer forming mold 50 , and then the first connecting member and the second connecting member can be removed from the air rudder assembly for further processing into a finished air rudder.

[0033] See also Figure 2 In some embodiments, the first connection portion 16 is a blind hole, the first positioning member 20 is provided with a second connection portion 21 matching the blind hole, and the second positioning member 30 is provided with a third connection portion 31 matching the blind hole.

[0034] It can be understood that the first connecting part 16 is in a recessed state, and after the first connecting part and the second connecting part are removed, the first connecting part 16 can be filled in a plugging manner, and then the finished product air vane outer wall is flat.

[0035] In some embodiments, the first connecting part 16 is a threaded hole, and the second connecting part 21 is a threaded stud. The first connecting part 16 and the second connecting part 21 are connected by screwing, which is convenient to install and can improve the disassembly efficiency.

[0036] Of course, in other embodiments, the inner annular wall of the blind hole can be provided with a first protrusion, and the outer wall of the second connecting part can be provided with a second protrusion capable of interference fit with the first protrusion, and the first connecting part 16 and the second connecting part 21 are connected by clamping.

[0037] Please refer to Figure 2 In some embodiments, the inner wall of the side wall of the rudder core 10 where the first connecting part 16 is located is provided with a thickened part 17, and the size of the thickened part 17 is greater than the size of the first connecting part 16.

[0038] Considering that after the blind hole is arranged on the outer wall of the rudder core 10, the thickness of the side wall of the rudder core 10 at the position corresponding to the blind hole is reduced, the thickened part 17 is arranged on the inner wall of the rudder core 10 to keep the wall thickness of the rudder core 10 consistent or the difference small, which can ensure the strength of the rudder core 10 as a whole, and will not reduce the strength of the finished product air vane while improving the perpendicularity and symmetry of the finished product air vane.

[0039] Please refer to Figure 3 In some embodiments, the first positioning part 20 includes a first column, and the second connecting part 21 is arranged at one end of the first column, and the other end of the first column is provided with a first wrenching part 24.

[0040] It can be understood that the first positioning part 20 is in the form of a column, and the first column makes the first positioning part 20 have a longer length. Correspondingly, the length of the groove on the heat-resistant layer forming mold 50 matched with the first positioning part 20 is also longer. In the process of matching the first positioning part 20 with the groove, after the longer first positioning part 20 and the groove are matched, the range in which the first positioning part 20 can shake in the groove is small, and the positioning effect of the first positioning part 20 is better, which can further improve the positioning effect of the first positioning part 20 on the rudder core 10 in the heat-resistant layer forming mold 50.

[0041] The wrenching part is a structure convenient for workers to wrench or twist, such as an internal hexagonal hole structure or an internal triangular hole structure. Of course, the size of the wrenching part is smaller than the minimum diameter of the first column, so as to facilitate the disassembly of the air vane assembly from the heat-resistant layer forming mold.

[0042] The first column includes a cylindrical segment 22 and a conical segment 23, the cylindrical segment 22 is arranged close to the second connecting part 21, and the diameter of the conical segment 23 decreases along the direction close to the wrenching part.

[0043] The groove shape on the heatproof layer forming mold 50 matches the outer shape of the first positioning piece 20, and in the demolding process, the gap between the conical segment 23 and the groove will gradually increase as the first positioning piece 20 gradually separates from the mold. The conical segment 23 is arranged on one hand to facilitate demolding, and on the other hand to reduce the possibility of collision and deformation between the first positioning piece 20 and the mold during demolding, so that the cooperation between the first positioning piece 20 and the mold can maintain good precision, and the service life of the first positioning piece 20 and the mold is improved.

[0044] In some embodiments, the diameter of the first column is greater than the diameter of the second connecting part 21, and the end face of the first column close to the second connecting part 21 is perpendicular to the axis of the second connecting part 21.

[0045] After connecting the second connecting part 21 with the first connecting part 16, the end face of the first column will be in contact with the rudder bottom surface 11, and when the end face is in contact with the rudder bottom surface 11, the first column is not easy to bend or deform compared to the rudder bottom surface 11, which can further improve the positioning effect between the first positioning piece 20 and the rudder core 10.

[0046] Please refer to Figure 4 In some embodiments, the second positioning piece 30 includes a second column 32, and the third connecting part 31 is arranged at one end of the second column 32, and the other end of the first column is provided with a second wrenching part 33.

[0047] Similar to the first positioning piece 20, by arranging the second column 32 to increase the length of the second positioning piece 30, the length of the groove on the heatproof layer forming mold 50 matched with the second positioning piece 30 is correspondingly longer. In the process of cooperation between the second positioning piece 30 and the groove, after the longer second positioning piece 30 and the corresponding groove are matched, the range in which the second positioning piece 30 can shake in the groove is small, and the second positioning piece 30 also has good positioning effect, which can further improve the positioning effect of the second positioning piece 30 on the rudder core 10 in the heatproof layer forming mold 50.

[0048] Of course, considering that the mandrel is arranged on the rudder bottom surface 11, the mold part corresponding to the rudder bottom surface 11 of the heatproof layer forming mold 50 is thicker, and therefore in some embodiments, the length of the first connecting part is greater than the length of the second connecting part, so that the first connecting part and the second connecting part can respectively adapt to the thickness of the mold part corresponding thereto.

[0049] In some embodiments, the rudder bottom surface 11 is provided with two first connecting parts 16, the two first connecting parts 16 of the rudder bottom surface 11 are symmetrically arranged along the axis of the rudder shaft 15; the rudder top surface 13 is provided with one first connecting part 16, the first connecting part 16 of the rudder top surface 13 is symmetrically arranged with one first connecting part 16 of the rudder bottom surface 11 along the center line of the rudder core 10.

[0050] Specifically, by arranging two first connecting parts 16 of the rudder bottom surface 11 symmetrically along the axis of the rudder shaft 15, and connecting the first positioning member 20 on the two first connecting parts 16 of the rudder bottom surface 11 respectively, the relative position between the rudder bottom surface 11 and the inner wall of the heat protection layer forming mold 50 can be further limited, so that after the heat protection layer 40 is arranged on the rudder core 10, the perpendicularity between the bottom surface of the finished air rudder and the axial direction of the rudder shaft 15 meets the requirements, and the perpendicularity of the rudder shaft 15 of the final finished air rudder is improved.

[0051] The first connecting part 16 of the rudder top surface 13 is symmetrically arranged with one first connecting part 16 of the rudder bottom surface 11 along the center line of the rudder core 10, and the second positioning member 30 is detachably installed on the first connecting part 16 of the rudder top surface 13. The second positioning member 30 of the rudder top surface 13 and the two first positioning members 20 of the rudder bottom surface 11 jointly act on the position of the rudder core 10 in the heat protection layer forming mold 50 through three positioning points, thereby effectively and stably positioning the rudder core 10, and improving the perpendicularity of the finished air rudder.

[0052] In some embodiments, the rear wall surface 14 is provided with one first connecting part 16, and the first connecting part 16 of the rear wall surface 14 is detachably connected with the second positioning member 30. By increasing the positioning point, the perpendicularity between the bottom surface of the outer wall of the finished air rudder and the axial direction of the rudder shaft 15 is further improved, thereby improving the symmetry of the heat protection layer 40 on the rudder core 10, and finally making the finished air rudder have high perpendicularity and high symmetry, and have low defective rate and good quality. In this application, unless otherwise specified and limited, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is "on", "above" and "on" the second feature, which includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "below" and "below" the second feature, which includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0053] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0054] In the present application, unless otherwise expressly specified and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise expressly specified and limited.

[0056] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An air rudder assembly, characterized in that: The air rudder assembly is detachably mounted in the heat protection layer forming mold and includes: a rudder core, the rudder core having a left rudder surface and a right rudder surface opposite to each other, and a rudder bottom surface, a rudder leading edge, a rudder top surface, and a rear wall surface sequentially arranged around the left rudder surface and the right rudder surface, wherein the rudder bottom surface is provided with a rudder shaft; The outer wall of the rudder core is provided with at least two first connection parts, at least one first connection part is provided on the bottom surface of the rudder; at least one first connection part is provided on the top surface of the rudder and / or the rear wall; a first positioning member, detachably connected to one of the first connecting portions on the bottom surface of the rudder; The second positioning member is detachably connected to at least one of the first connecting portions of the rudder top surface and / or the rear wall surface.

2. The air rudder assembly according to claim 1, characterized in that: The first connection portion is a blind hole, the first positioning member is provided with a second connection portion matching the blind hole, and the second positioning member is provided with a third connection portion matching the blind hole.

3. The air rudder assembly according to claim 2, characterized in that: The first connection portion is a screw hole, and the second connection portion is a stud.

4. The air rudder assembly according to claim 1, wherein: The inner wall of the side wall of the rudder core where the first connecting portion is located is provided with a thickened portion, and the size of the thickened portion is larger than that of the first connecting portion.

5. The air rudder assembly according to claim 2, characterized in that: The first positioning member includes a first column, the second connecting portion is provided at one end of the first column, and the other end of the first column is provided with a first twisting portion.

6. The air rudder assembly according to claim 5, characterized in that: The first column includes a cylindrical section and a conical section. The cylindrical section is arranged close to the second connecting portion, and the diameter of the conical section decreases gradually along a direction close to the wrench portion.

7. The air rudder assembly according to claim 5, characterized in that: The diameter of the first column is greater than the diameter of the second connecting portion, and the end surface of the first column close to the second connecting portion is perpendicular to the axis of the second connecting portion.

8. The air rudder assembly according to claim 2, characterized in that: The second positioning member includes a second column, the third connecting portion is provided at one end of the second column, and the other end of the first column is provided with a second wrench portion.

9. The air rudder assembly according to claim 1, characterized in that: The rudder bottom surface is provided with two first connection parts, and the two first connection parts of the rudder bottom surface are symmetrically arranged along the axis of the rudder shaft; The rudder top surface is provided with a first connecting portion, and the first connecting portion of the rudder top surface and one of the first connecting portions of the rudder bottom surface are symmetrically arranged along the center line of the rudder core.

10. The air rudder assembly according to claim 9, characterized in that: The rear wall is provided with a first connecting portion.

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