Thermoplastic carbon fiber composite material casing

Abstract

The utility model provides a thermoplastic carbon fiber composite material casing, which belongs to the technical field of spaceflight speed regulators, and comprises a main body, an insert and a neck bush, the main body, the insert and the neck bush are nested and matched in sequence from outside to inside, the insert is provided with a first limiting part and a second limiting part, and the first limiting part and the second limiting part are matched with each other. The relative position between the main body and the insert is controlled through the first limiting part, the relative position between the insert and the neck bush is controlled through the second limiting part, first connecting holes distributed annularly are formed in the main body, and second connecting holes distributed annularly are formed in the insert. According to the utility model, through the main body formed by the thermoplastic composite material, the insert formed by the aluminum alloy material and the neck bush formed by the structural steel material, the formed casing has high strength, fatigue resistance and corrosion resistance, and the light weight of the product is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of aerospace governors, and relates to a casing, in particular to a thermoplastic carbon fiber composite casing. Background Art

[0002] Thermoplastic carbon fiber composites have performance advantages such as light weight, fatigue resistance, and corrosion resistance, and have great potential in industrial fields such as aerospace, automotive industry, construction, pipelines, and transportation. The casing is a key component on a helicopter governor. Using continuous-discontinuous carbon fiber-reinforced thermoplastic composites to replace cast aluminum materials to manufacture the casing can not only achieve the integral and rapid preparation of the thermoplastic composite casing, but also reduce weight on the basis of maintaining the stiffness and strength of the original casing, and still have a high heat dissipation efficiency.

[0003] However, due to the complex structure of the casing, if all composite materials are used, it is difficult to meet the requirements for the strength and stiffness of the casing, and the overall forming is difficult. Summary of the Utility Model

[0004] The purpose of the present utility model is to address the above problems existing in the prior art, and propose a casing with high strength, fatigue resistance, corrosion resistance, and capable of achieving lightweight.

[0005] The purpose of the present utility model can be achieved by the following technical solutions: A thermoplastic carbon fiber composite casing, comprising:

[0006] A main body injection-molded from a thermoplastic composite material, an insert machined from an aluminum alloy material, and a lining sleeve made of structural steel, and the main body, the insert, and the lining sleeve are nested and matched in sequence from outside to inside. Among them, a first limiting portion and a second limiting portion are provided on the insert. The relative position between the main body and the insert is controlled by the first limiting portion, and the relative position between the insert and the lining sleeve is controlled by the second limiting portion. And a first connection hole distributed in a ring shape is provided on the main body, and a second connection hole distributed in a ring shape is provided on the insert.

[0007] In the above-mentioned thermoplastic carbon fiber composite casing, the first limiting portion and the second limiting portion are respectively located on the inner and outer side arms of the insert. Among them, one end face of the main body forms an abutment with the first limiting portion, one end face of the lining sleeve forms an abutment with the second limiting portion, and there is a height difference between the plane where the first limiting portion is located and the plane where the second limiting portion is located, or the first limiting portion is a first stepped surface and the second limiting portion is a second stepped surface.

[0008] In the above-mentioned thermoplastic carbon fiber composite material casing, a first positioning portion is provided between one end face of the main body and the first limiting portion to limit the relative rotation of the two, and the first positioning portion includes a first convex portion or a first concave portion provided on one end face of the main body, and a first concave portion or a first convex portion correspondingly provided on the first limiting portion, wherein a concave-convex nesting fit is formed between the first convex portion and the first concave portion.

[0009] In the above-mentioned thermoplastic carbon fiber composite material casing, a second positioning portion for limiting the relative rotation of the two is also provided between the inner wall of the main body and the outer wall of the insert, and the second positioning portion includes a second convex portion or a second concave portion provided on the outer wall of the insert, and a second concave portion or a second convex portion correspondingly provided on the inner wall of the main body, wherein a concave-convex nesting fit is formed between the second convex portion and the second concave portion.

[0010] In the above-mentioned thermoplastic carbon fiber composite material casing, the first convex portion includes a plurality of arcuate strips, the first concave portion includes a plurality of arcuate grooves, the second convex portion includes a plurality of cylindrical protrusions, and the second concave portion includes a plurality of cylindrical grooves, wherein a spacing is formed between the arcuate protrusions and the cylindrical grooves, and a spacing is formed between the arcuate grooves and the cylindrical protrusions.

[0011] In the above-mentioned thermoplastic carbon fiber composite material casing, a first annular reinforcement rib, a second annular reinforcement rib and a flange are formed on the main body radiating outward from the center of the main body, and a first reinforcement rib is arranged between the first annular reinforcement rib and the second recessed portion, and a second reinforcement rib is arranged between the first annular reinforcement rib and the second annular reinforcement rib, and a plurality of first connecting holes are arranged on the flange, wherein a sunken first concave cavity is formed between two adjacent first reinforcement ribs, and a sunken second concave cavity is formed between two adjacent second reinforcement ribs.

[0012] In the above-mentioned thermoplastic carbon fiber composite casing, a plurality of strip ridges are arranged between two adjacent cylindrical grooves, and the plurality of strip ridges are arranged up and down along the axial direction of the main body, wherein the strip ridges are nested one by one with the strip concave cavities on the outer side wall of the insert.

[0013] In the above-mentioned thermoplastic carbon fiber composite material casing, a third positioning portion is provided between the inner side wall of the insert and the inner sleeve, and the relative rotation between the insert and the inner sleeve is limited by the third positioning portion, and the third positioning portion includes a first positioning hole provided on the inner side wall of the insert, and a second positioning hole provided on the inner sleeve, wherein the position of the first positioning hole corresponds to the position of the second positioning hole.

[0014] In the above-mentioned thermoplastic carbon fiber composite material casing, the opening directions of the first positioning hole and the second positioning hole are arranged obliquely.

[0015] In the above-mentioned thermoplastic carbon fiber composite material casing, the casing further includes a gasket made of structural steel, and the position of the gasket corresponds to the position of the flange. Among them, a third connection hole corresponding to the position of the first connection hole is provided on the gasket.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] A thermoplastic carbon fiber composite material casing provided by the present utility model, through the main body formed by thermoplastic composite materials, the inserts formed by aluminum alloy materials, and the inner lining sleeves formed by structural steel materials, enables the formed casing to have high strength, fatigue resistance, corrosion resistance, and realizes the lightweight of the product. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a thermoplastic carbon fiber composite material casing of the present utility model.

[0019] Figure 2 It is a sectional view of a thermoplastic carbon fiber composite material casing of the present utility model.

[0020] Figure 3 It is a schematic structural diagram of the main body in a preferred embodiment of the present utility model.

[0021] Figure 4 It is a schematic structural diagram of the main body from another perspective in a preferred embodiment of the present utility model.

[0022] Figure 5 It is a schematic structural diagram of the insert in a preferred embodiment of the present utility model.

[0023] In the figure, 10, main body; 11, first connection hole; 12, arc-shaped strip; 13, cylindrical groove; 14, first annular reinforcing rib; 15, second annular reinforcing rib; 16, flange; 17, first reinforcing rib plate; 18, second reinforcing rib plate; 19, first concave cavity; 110, second concave cavity; 120, strip-shaped convex rib; 20, insert; 21, first limiting portion; 22, second limiting portion; 23, second connection hole; 24, arc-shaped strip groove; 25, cylindrical convex column; 26, strip-shaped concave cavity; 27, first positioning hole; 30, inner lining sleeve; 31, second positioning hole; 40, gasket; 41, third connection hole. Detailed Embodiments

[0024] The following are specific embodiments of the present utility model and in conjunction with the drawings, the technical solutions of the present utility model are further described, but the present utility model is not limited to these embodiments.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0026] As Figures 1 to 5 shown, a thermoplastic carbon fiber composite casing provided by the present utility model includes: a main body 10, an insert 20, and a lining sleeve 30. The main body 10, the insert 20, and the lining sleeve 30 are nested and fitted in sequence from outside to inside. Among them, a first limiting portion 21 and a second limiting portion 22 are provided on the insert 20. The relative position between the main body 10 and the insert 20 is controlled by the first limiting portion 21, and the relative position between the insert 20 and the lining sleeve 30 is controlled by the second limiting portion 22. An annularly distributed first connection hole 11 is provided on the main body 10, and an annularly distributed second connection hole 23 is provided on the insert 20.

[0027] It is worth mentioning that in this embodiment, the main body 10 is injection-molded using a thermoplastic composite material, which has characteristics such as light weight, fatigue resistance, and corrosion resistance, and has excellent mechanical properties; the insert 20 is made of aluminum alloy material and processed by machining. This material has strong strength, good fatigue resistance and corrosion resistance, and has a lower density and lighter weight compared to other metals; the lining sleeve 30 uses structural steel, which has high strength, can withstand more pressure, is more durable, can withstand the influence of harsh environments, and the lightweight characteristic can reduce the total weight of the entire casing.

[0028] In addition, the diameter of the main body 10 is 340 - 360 mm, and the mass is 1.0 - 1.2 kg; the diameter of the insert 20 is 180 - 200 mm, and the mass is 0.5 - 0.8 kg; the diameter of the lining sleeve 30 is 150 - 170 mm, and the mass is 0.3 - 0.6 kg.

[0029] The thermoplastic carbon fiber composite casing provided by the present utility model, through the main body 10 formed by thermoplastic composite material, the insert 20 formed by aluminum alloy material, and the lining sleeve 30 formed by structural steel material, enables the formed casing to have high strength, fatigue resistance, corrosion resistance, and realizes the lightweight of the product.

[0030] Preferably, the insert 20 is arranged in a columnar structure, and the first limiting portion 21 and the second limiting portion 22 are respectively located on the inner and outer side arms of the insert 20. Among them, one end face of the main body 10 forms an abutment with the first limiting portion 21, one end face of the lining sleeve 30 forms an abutment with the second limiting portion 22, and there is a height difference between the plane where the first limiting portion 21 is located and the plane where the second limiting portion 22 is located.

[0031] It is worth mentioning that the first limiting portion 21 is a first stepped surface, the second limiting portion 22 is a second stepped surface, and both the first stepped surface and the second stepped surface are integrally provided with the insert 20.

[0032] Preferably, a first positioning portion for limiting the relative rotation between the two is provided between one end end surface of the main body 10 and the first limiting portion 21, and the first positioning portion includes a first convex portion provided on one end end surface of the main body 10 and a first concave portion correspondingly provided on the first limiting portion 21. Among them, an uneven nested fit is formed between the first convex portion and the first concave portion.

[0033] In this embodiment, the positions of the first convex portion and the first concave portion can be interchanged, that is, a first concave portion is provided on one end end surface of the main body 10, and a corresponding first convex portion is provided on the first limiting portion 21.

[0034] Further preferably, the first convex portion and the first concave portion are arc-shaped. Among them, the first convex portion includes a plurality of arc-shaped strips 12, and the first concave portion includes a plurality of arc-shaped grooves 24.

[0035] Preferably, a second positioning portion for limiting the relative rotation between the two is further provided between the inner side wall of the main body 10 and the outer side wall of the insert 20, and the second positioning portion includes a second convex portion provided on the outer side wall of the insert 20 and a second concave portion correspondingly provided on the inner side wall of the main body 10. Among them, an uneven nested fit is formed between the second convex portion and the second concave portion.

[0036] In this embodiment, the positions of the second convex portion and the second concave portion can also be interchanged, that is, a second convex portion is provided on the inner side wall of the main body 10, and a corresponding second concave portion is provided on the outer side wall of the insert 20.

[0037] It is worth mentioning that the circumferential positioning of the main body 10 and the insert 20 in the horizontal plane is realized through the first positioning portion, and the circumferential positioning of the main body 10 and the insert 20 in the vertical plane is realized through the second positioning portion, so as to ensure the accuracy of the relative position between the two.

[0038] It is further pointed out that the second convex portion and the second concave portion are columnar. Among them, the second convex portion includes a plurality of columnar convex columns 25, and the second concave portion includes a plurality of columnar grooves 13.

[0039] It is further pointed out that when the first convex portion and the second concave portion are provided on the main body 10, an interval is formed between the arc-shaped convex strip and the columnar groove 13; similarly, when the first concave portion and the second convex portion are provided on the insert 20, an interval is formed between the arc-shaped groove and the columnar convex column 25. Among them, a plurality of second connecting holes 23 are provided on the corresponding columnar convex columns 25.

[0040] Preferably, a first annular reinforcing rib 14, a second annular reinforcing rib 15 and a flange 16 are formed on the main body 10 radiating outward from the center of the main body 10. A first reinforcing rib plate 17 is arranged between the first annular reinforcing rib 14 and the second recess. A second reinforcing rib plate 18 is arranged between the first annular reinforcing rib 14 and the second annular reinforcing rib 15. A plurality of first connecting holes 11 are arranged on the flange 16. Among them, a sunken first cavity 19 is formed between two adjacent first reinforcing rib plates 17, and a sunken second cavity 110 is formed between two adjacent second reinforcing rib plates 18.

[0041] In this embodiment, the first annular reinforcing rib 14, the second annular reinforcing rib 15, the first reinforcing rib plate 17 and the second reinforcing rib plate 18 are arranged on the front surface of the main body 10. Among them, by arranging the first annular reinforcing rib 14, the second annular reinforcing rib 15, the first reinforcing rib plate 17 and the second reinforcing rib plate 18, the strength of the whole main body 10 is improved.

[0042] Further preferably, a plurality of strip-shaped ridges 120 are arranged between two adjacent cylindrical grooves 13, and the plurality of strip-shaped ridges 120 are arranged up and down along the axis direction of the main body 10. Among them, the strip-shaped ridges 120 are nested and matched with the strip-shaped cavities 26 on the outer side wall of the insert 20 one by one.

[0043] Preferably, a third positioning portion is arranged between the inner side wall of the insert 20 and the inner lining sleeve 30. The relative rotation between the insert 20 and the inner lining sleeve 30 is limited by the third positioning portion. The third positioning portion includes a first positioning hole 27 arranged on the inner side wall of the insert 20 and a second positioning hole 31 arranged on the inner lining sleeve 30. Among them, the position of the first positioning hole 27 corresponds to the position of the second positioning hole 31, and the connection and fixation between the insert 20 and the inner lining sleeve 30 are realized through a connecting piece.

[0044] Further preferably, the opening directions of the first positioning hole 27 and the second positioning hole 31 are obliquely arranged.

[0045] Preferably, the casing further includes a gasket 40 made of structural steel, and the position of the gasket 40 corresponds to the position of the flange 16. Among them, a third connecting hole 41 corresponding to the position of the first connecting hole 11 is arranged on the gasket 40.

[0046] It is worth mentioning that the gasket 40 is annularly arranged, and the diameter of the gasket 40 is 340 - 360 mm, and the mass is 0.2 - 0.5 kg.

[0047] It should be noted that in the present utility model, descriptions such as "first", "second", and "one" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. Terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0048] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0049] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A thermoplastic carbon fiber composite casing, characterized in that include: A main body is injection molded from a thermoplastic composite material, an insert is machined from an aluminum alloy material, and an inner sleeve is made of structural steel, and the main body, the insert and the inner sleeve are nested and matched in sequence from the outside to the inside, wherein the insert is provided with a first limiting portion and a second limiting portion, the relative position between the main body and the insert is controlled by the first limiting portion, and the relative position between the insert and the inner sleeve is controlled by the second limiting portion, and the main body is provided with first connecting holes distributed in an annular shape, and the insert is provided with second connecting holes distributed in an annular shape.

2. The thermoplastic carbon fiber composite casing according to claim 1, wherein The first limiting portion and the second limiting portion are respectively located on the inner and outer side arms of the insert, wherein one end surface of the main body is in contact with the first limiting portion, and one end surface of the inner sleeve is in contact with the second limiting portion, and there is a height difference between the plane where the first limiting portion is located and the plane where the second limiting portion is located, or the first limiting portion is a first step surface, and the second limiting portion is a second step surface.

3. A thermoplastic carbon fiber composite casing according to claim 1 or 2, characterized in that A first positioning portion is provided between one end surface of the main body and the first limiting portion to limit the relative rotation of the two, and the first positioning portion includes a first convex portion or a first concave portion provided on one end surface of the main body, and a first concave portion or a first convex portion correspondingly provided on the first limiting portion, wherein a concave-convex nesting fit is formed between the first convex portion and the first concave portion.

4. A thermoplastic carbon fiber composite casing according to claim 3, wherein, A second positioning portion is also provided between the inner wall of the main body and the outer wall of the insert to limit the relative rotation of the two, and the second positioning portion includes a second convex portion or a second concave portion provided on the outer wall of the insert, and a second concave portion or a second convex portion correspondingly provided on the inner wall of the main body, wherein a concave-convex nesting fit is formed between the second convex portion and the second concave portion.

5. The thermoplastic carbon fiber composite material casing according to claim 4, wherein The first convex portion includes a plurality of arcuate strips, the first concave portion includes a plurality of arcuate grooves, the second convex portion includes a plurality of cylindrical convex columns, and the second concave portion includes a plurality of cylindrical grooves, wherein a spacing is formed between the arcuate convex columns and the cylindrical grooves, and a spacing is formed between the arcuate grooves and the cylindrical convex columns.

6. The thermoplastic carbon fiber composite casing according to claim 4, wherein, A first annular reinforcing rib, a second annular reinforcing rib and a flange are formed on the main body radiating outward from the center of the main body, and a first reinforcing rib is arranged between the first annular reinforcing rib and the second recess, and a second reinforcing rib is arranged between the first annular reinforcing rib and the second annular reinforcing rib. A plurality of first connecting holes are arranged on the flange, wherein a sunken first concave cavity is formed between two adjacent first reinforcing ribs, and a sunken second concave cavity is formed between two adjacent second reinforcing ribs.

7. A thermoplastic carbon fiber composite casing according to claim 5, characterized in that A plurality of strip convex ridges are arranged between two adjacent cylindrical grooves, and the plurality of strip convex ridges are arranged up and down along the axis direction of the main body, wherein the strip convex ridges are nested one by one with the strip concave cavities on the outer side wall of the insert.

8. A thermoplastic carbon fiber composite casing according to claim 1 or 2, characterized in that, A third positioning portion is provided between the inner wall of the insert and the inner sleeve, and the relative rotation between the insert and the inner sleeve is limited by the third positioning portion. The third positioning portion includes a first positioning hole provided on the inner wall of the insert, and a second positioning hole provided on the inner sleeve, wherein the position of the first positioning hole corresponds to the position of the second positioning hole.

9. The thermoplastic carbon fiber composite material casing according to claim 8, characterized in that The opening directions of the first positioning hole and the second positioning hole are arranged obliquely.

10. A thermoplastic carbon fiber composite material casing according to claim 6, characterized in that, The casing further includes a gasket made of structural steel, and the position of the gasket corresponds to the position of the flange. Among them, a third connection hole corresponding to the position of the first connection hole is provided on the gasket.

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