Support and method for molding support

Abstract

The invention discloses a supporting piece and a forming method of the supporting piece, and belongs to the technical field of supporting pieces. The support includes an inner core and a first layup. The inner core comprises a tooth root and a protruding part, the tooth root is provided with a first face and a second face which are opposite in the radial direction of the supporting piece, the protruding part is arranged on the second face of the tooth root and extends in the radial direction of the supporting piece, and the protruding part divides the second face of the tooth root into a first bearing face and a second bearing face which are distributed in the axial direction of the supporting piece; the first laying layer extends from the first bearing surface to the second bearing surface along the contour of the protruding part. The fibers in the supporting piece are regularly arranged, and the consistency of the fiber direction and the radial stress direction of the supporting piece is improved, so that the structural strength of the supporting piece is improved, and the supporting piece can bear high-strength impact loads.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of support, in particular to a support and a forming method of the support. BACKGROUND

[0002] Low-temperature liquid (such as liquid hydrogen, liquid nitrogen, liquid oxygen, etc.) is stored and transported by using a vacuum adiabatic low-temperature container. The low-temperature container is composed of an inner tank and an outer tank. The inner tank is installed on the outer tank through a support structure. The support structure can include an axial support and a radial support. During transportation, the radial support not only bears the huge gravity load of the stored liquid and the tank body itself, but also faces strong impact load in potential special cases. Therefore, the radial support is required to have extremely strict performance.

[0003] In the related art, the radial support is usually made of glass fiber reinforced plastic. However, the regularity and directionality of the fiber arrangement inside the support are not accurate enough, and it is difficult to ensure that the main direction of the fiber is consistent with the radial stress direction of the support. This directly affects the overall mechanical properties of the support, and causes the radial support to be damaged when bearing high-strength impact load. SUMMARY

[0004] The embodiments of the present application provide a support and a forming method of the support, which can arrange the fibers inside the support regularly, improve the consistency of the fiber direction and the radial stress direction of the support, and improve the structural strength of the support, so as to at least partially solve the above technical problems.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a support is provided, comprising:

[0006] An inner core, the inner core comprises a tooth root and a protruding portion, the tooth root has opposite first and second faces in the radial direction of the support, the protruding portion is arranged on the second face of the tooth root and extends along the radial direction of the support, and the protruding portion divides the second face of the tooth root into a first load-bearing face and a second load-bearing face distributed along the axial direction of the support;

[0007] A first ply extends from the first load-bearing face along the profile of the protruding portion to the second load-bearing face.

[0008] Optionally, the support further comprises a second ply, the second ply is embedded in the top region of the first ply in the radial direction of the support, and the second ply extends along the axial direction of the support.

[0009] Optionally, the support further comprises a third ply, the third ply is arranged outside the top region of the first ply in the radial direction of the support, and the third ply extends along the radial direction of the support.

[0010] Optionally, the support further comprises a fourth ply, which is disposed outside the first ply and the third ply in the axial direction of the support and is disposed in an alternating manner along the axial direction of the support.

[0011] Optionally, the support further comprises a fifth ply, which is disposed outside the first ply in the axial direction of the support and is disposed in an alternating manner along the axial direction of the support with the fourth ply.

[0012] Optionally, the protruding portion is provided with a plurality of wire holes, which pass through the protruding portion along the axial direction of the support, and the plurality of wire holes are distributed along the circumferential direction and the radial direction of the support.

[0013] The support further comprises a suture, which sequentially passes through the plurality of wire holes and the first ply corresponding to the wire holes.

[0014] Optionally, the wire holes have a diameter of 2mm to 3mm, the distance between adjacent wire holes in the radial direction of the support is less than or equal to 40mm, and the distance between adjacent wire holes in the circumferential direction of the support is less than or equal to 80mm.

[0015] Optionally, in the radial direction of the support, the height of the inner core is 80% to 90% of the height of the support.

[0016] The thickness of the protruding portion near one end of the root in the radial direction of the support is greater than the thickness of the protruding portion away from the other end of the root in the radial direction of the support, and the thickness of the root in the radial direction of the support is 35% to 45% of the maximum thickness of the protruding portion in the axial direction of the support.

[0017] According to a second aspect of the present application, a forming method of a support for manufacturing the support according to any one of the above-mentioned aspects, the forming method of the support comprises:

[0018] providing the inner core;

[0019] laying fibers, the step of laying fibers comprising:

[0020] laying the first ply from the first bearing surface to the second bearing surface along the profile of the protruding portion.

[0021] Optionally, the step of laying fibers further comprises: during the laying of the first ply, laying a second ply on the top area of the first ply in the radial direction of the support, and the laying direction of the second ply is perpendicular to the radial direction of the support.

[0022] Optionally, the step of laying the second ply on top of the first ply in the radial direction of the support comprises: laying the first ply from the first bearing surface along the profile of the protrusion to the second bearing surface and laying a preset number of plies, and then laying a preset number of plies of the second ply on top of the first ply in the radial direction of the support, as one cycle, repeating the cycle until the total thickness of the first ply and the second ply in the radial direction of the support reaches a preset thickness.

[0023] Optionally, the step of laying the fiber further comprises: laying a third ply on the outside of the top area of the first ply in the radial direction of the support, the laying direction of the third ply being parallel to the radial direction of the support.

[0024] Optionally, the step of laying the fiber further comprises: forming a plurality of wire holes on the protrusion, the wire holes penetrating through the protrusion in the axial direction of the support, the plurality of wire holes being arranged in the circumferential and radial directions of the support.

[0025] Optionally, the step of laying the third ply on the outside of the top area of the first ply in the radial direction of the support, the laying direction of the third ply being parallel to the radial direction of the support, further comprises fiber stitching.

[0026] The step of fiber stitching comprises: using a stitching line to sequentially pass through a plurality of wire holes and the first ply arranged corresponding to the wire holes.

[0027] Optionally, the step of laying the fiber further comprises: laying a fourth ply on both sides of the first ply in the axial direction of the support, respectively.

[0028] Optionally, the step of laying the fiber further comprises: in the process of laying the fourth ply, laying a fifth ply alternately and layer by layer with the fourth ply.

[0029] Optionally, the step of laying the fifth ply alternately and layer by layer with the fourth ply in the process of laying the fourth ply comprises:

[0030] The fifth ply is alternately and layer by layer laid with the fourth ply for at least one cycle.

[0031] Then the fourth ply is laid alone until the thickness of the fourth ply in the axial direction of the support reaches a preset thickness.

[0032] Optionally, the step of laying the fiber is followed by a step of mold closing and pressing.

[0033] The step of the combined mold pressing comprises: placing in a mold, pressing the mold by a press to 9MPa to 11MPa.

[0034] Optionally, the step of the combined mold pressing further comprises pressure holding and curing after the step of the combined mold pressing.

[0035] The step of the pressure holding and curing comprises: the pressure of the press is kept to 9MPa to 11MPa, sequentially performing first heating, second heating and third heating, and then naturally cooling to room temperature to form a semi-finished product.

[0036] The condition of the first heating is: the temperature is 65℃ to 75℃, and the heating time is 1.5 hours to 2.5 hours; the condition of the second heating is: the temperature is 85℃ to 95℃, and the heating time is 1.5 hours to 2.5 hours; the condition of the third heating is: the temperature is 145℃ to 155℃, and the heating time is 5.5 hours to 6.5 hours.

[0037] Optionally, the step of the pressure holding and curing further comprises demolding after the step of the pressure holding and curing.

[0038] The step of the demolding comprises: separating the semi-finished product from the mold.

[0039] Optionally, the step of the demolding further comprises machining after the step of the demolding.

[0040] The step of the machining comprises: machining the semi-finished product to a preset size to form the support.

[0041] In the support and the forming method of the support, the first laying layer is arranged on the inner core, and the first laying layer extends from the first bearing surface to the second bearing surface along the profile of the protruding portion, so that the fibers inside the support are arranged regularly, the consistency of the fiber direction and the radial stress direction of the support is improved, that is, most of the fiber direction is consistent with the radial stress direction, thereby improving the structural strength of the support, enabling the support to withstand high-strength impact load, and the structure remains intact after impact without cracks.

[0042] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0044] For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in connection with the accompanying drawings in which like parts are marked with like numerals throughout the drawings.

[0045] Figure 1 is a perspective structural schematic view of a support provided in an exemplary embodiment of the present disclosure;

[0046] Figure 2 is a plan structural schematic view of a support provided in an exemplary embodiment of the present disclosure;

[0047] Figure 3 is a cross-sectional schematic view along Figure 2 line A-A in FIG. 1;

[0048] Figure 4 is a cross-sectional structural schematic view of an inner core provided in an exemplary embodiment of the present disclosure;

[0049] Figure 5 is a cross-sectional structural schematic view of a support provided in an exemplary embodiment of the present disclosure;

[0050] Figure 6 is a schematic view of a wire hole distribution provided in an exemplary embodiment of the present disclosure;

[0051] Figure 7 is a schematic view of a partial fiber layup angle provided in an exemplary embodiment of the present disclosure;

[0052] Figure 8 is a schematic view of a support under pressure provided in an exemplary embodiment of the present disclosure.

[0053] BRIEF DESCRIPTION OF DRAWINGS

[0054] 100, support; 1, inner core; 11, tooth root; 111, first face; 112, second face; 1121, first load bearing face; 1122, second load bearing face; 12, protrusion; 13, wire hole; 2, first layup; 3, second layup; 4, third layup; 5, fourth layup; 6, fifth layup; 7, suture; 200, mold; 300, press; X, radial; Y, axial. DETAILED DESCRIPTION

[0055] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application. In addition, it should be understood that the specific implementation described herein is only used to illustrate and explain the present application, and is not used to limit the present application. In the present application, unless otherwise specified and limited, the terms such as "connected", "connected", "stacked" and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrated; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] In the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "stacked" and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrated; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] The present application provides a support and a forming method of the support, which are described in detail below. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments of the present application. Moreover, in the following embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0058] According to the first aspect of the present application, with reference to Figures 1 to 3 , an embodiment of the present application provides a support 100, which can be annular as a whole, and in the present application, the support 100 is taken as an example of being circular as a whole. The cross section of the support 100 can be approximately trapezoidal or circular arc-shaped. As an example, the outer diameter of the support 100 can be 1200mm, and the inner diameter of the support 100 can be 752mm.

[0059] With reference to Figures 3 to 5 , the support 100 can include an inner core 1 and a first layer 2, and the first layer 2 is arranged on at least part of the surface of the inner core 1.

[0060] Specifically, with reference to Figure 3 and Figure 4The inner core 1 can include a tooth root 11 and a protruding portion 12, both of which can have a circular ring structure. The tooth root 11 has opposite first and second faces 111, 112 in the radial direction X of the support 100, the first face 111 being arranged towards the center of the support 100, and the second face 112 being arranged away from the center of the support 100. The protruding portion 12 is arranged on the second face 112 of the tooth root 11 and extends in the radial direction X of the support 100, i.e. away from the center of the support 100. The protruding portion 12 can divide the second face 112 of the tooth root 11 into first and second load bearing faces 1121, 1122 arranged along the axial direction Y of the support 100, both of which also have a circular ring structure. The protruding portion 12 can be arranged close to the middle of the tooth root 11 in the axial direction Y of the support 100, so that the first and second load bearing faces 1121, 1122 are symmetrically arranged about the protruding portion 12.

[0061] The center of the inner core 1 can coincide with the center of the support 100, i.e. the inner core 1 and the support 100 have the same center, and the tooth root 11 can serve as an inner ring of the support 100. The inner core 1 is a basic load bearing skeleton of the support 100, and in the radial direction X of the support 100, the height of the inner core 1 is 80% to 90% of the height of the support 100, for example, the height of the inner core 1 is 85% of the height of the support 100. The shape of the cross section of the protruding portion 12 is similar to the shape of the cross section of the support 100, i.e. the cross section of the protruding portion 12 can also correspondingly have an approximate trapezoidal or circular arc shape, and in this embodiment, the cross section of the protruding portion 12 has an approximate trapezoidal shape. The thickness of one end of the protruding portion 12 close to the tooth root 11 in the radial direction X of the support 100 is greater than the thickness of the other end of the protruding portion 12 away from the tooth root 11 in the radial direction X of the support 100. The thickness of the tooth root 11 in the radial direction X of the support 100 is 35% to 45% of the maximum thickness of the protruding portion 12 in the axial direction Y of the support 100, for example, the thickness of the tooth root 11 in the radial direction X of the support 100 is 40% of the maximum thickness of the protruding portion 12 in the axial direction Y of the support 100.

[0062] The material of the inner core 1 can include at least one of glass fiber epoxy resin and glass cloth. As an example, the inner core 1 can be formed by winding glass fiber epoxy resin, and during the winding process of the glass fiber epoxy resin, part of the glass cloth can be wound, i.e. the glass fiber epoxy resin and the glass cloth can be arranged alternately to improve the overall strength and stability of the inner core 1. Most of the fibers in the glass fiber epoxy resin and the glass cloth are in the same direction as the axial direction Y of the support 100, thereby improving the performance of the support 100 in bearing impact load in the axial direction Y. As an example, the grade of the glass cloth is SW220B-90a.

[0063] Referring to Figure 1 and Figure 5The first ply 2 extends from the first bearing surface 1121 to the second bearing surface 1122 along the profile of the protrusion 12. Since the shape of the cross section of the protrusion 12 is similar to the shape of the cross section of the support 100, the first ply 2 is laid along the profile of the protrusion 12, so that the fiber directions in the first ply 2 can be regularly distributed, thereby improving the performance of the support 100 in bearing the impact load in the radial direction X. The material of the first ply 2 is, for example, glass fiber prepreg, and the thickness of the glass fiber prepreg is, for example, 0.2 mm, etc.

[0064] In the present application, by providing the first ply 2 on the inner core 1, and the first ply 2 extending from the first bearing surface 1121 to the second bearing surface 1122 along the profile of the protrusion 12, the fibers inside the support 100 can be regularly arranged, the consistency of the fiber directions with the stress direction of the support 100 in the radial direction X is improved, that is, most of the fiber directions are consistent with the stress direction in the radial direction X, thereby improving the structural strength of the support 100, enabling the support 100 to bear high-strength impact load, and the structure remains intact after impact without cracks.

[0065] In some embodiments, referring to Figure 1 and Figure 5 , the support 100 can further include a second ply 3, which can be embedded on the top area of the first ply 2 in the radial direction X of the support 100 to increase the thickness of the support 100 in the radial direction X of the support 100. The second ply 3 can be arranged along the axial direction Y of the support 100, that is, the second ply 3 is laid along the axial direction Y of the support 100, so that most of the fiber directions in the second ply 3 are consistent with the axial direction Y of the support 100. The material of the second ply 3 can be the same as that of the first ply 2.

[0066] Referring to Figure 1 and Figure 5 , the support 100 can further include a third ply 4, which can be arranged outside the top area of the first ply 2 in the radial direction X of the support 100. The third ply 4 is laid on the outermost layer of the first ply 2 in the radial direction X of the support 100, that is, on the top outside of the protrusion 12. The inner profile of the third ply 4 matches the outer profile of the outermost layer of the first ply 2, and the thickness of the third ply 4 in the axial direction Y of the support 100 is equal to or approximately equal to the width of the outermost layer of the first ply 2. The third ply 4 can be arranged along the radial direction X of the support 100, that is, the third ply 4 is laid along the radial direction X of the support 100, so that most of the fiber directions in the third ply 4 are consistent with the radial direction X of the support 100, thereby improving the structural strength of the support 100, and avoiding damage to the outermost layer of the first ply 2 in the radial direction X of the support 100 when impacted. The material of the third ply 4 can be the same as that of the first ply 2.

[0067] Referring toFigure 1 And Figure 5 The support 100 can further include a fourth ply 5, which can be disposed outside the first ply 2 and the third ply 4 in the axial direction Y of the support 100 and stacked alternately along the axial direction Y of the support 100 to increase the thickness of the support 100 in the axial direction Y of the support 100. The fourth ply 5 can be disposed extending from the second face 112 of the dedendum 11 away from the dedendum 11, and most of the fibers in the fourth ply 5 are in the radial direction X of the support 100. An end of the fourth ply 5 away from the dedendum 11 can be flush with an end of the third ply 4 away from the first ply 2. The material of the fourth ply 5 can be the same as that of the first ply 2.

[0068] Referring to Figure 1 And Figure 5 The support 100 can further include a fifth ply 6, which can be disposed outside the first ply 2 in the axial direction Y of the support 100 and stacked alternately along the axial direction Y of the support 100 with the fourth ply 5. The fifth ply 6 can be disposed extending from the second face 112 of the dedendum 11 away from the dedendum 11, and the length of the fifth ply 6 in the radial direction X of the support 100 can be less than that of the fourth ply 5 in the radial direction X of the support 100. The fifth ply 6 is used to further increase the local thickness of the support 100 in the axial direction Y of the support 100 to form a support 100 with a predetermined shape. In some embodiments, in the axial direction Y of the support 100, the fifth ply 6 is stacked alternately with the part of the fourth ply 5 close to the first ply 2.

[0069] In some embodiments, referring to Figure 1 , Figure 4 And Figure 6 The protrusion 12 can be provided with a plurality of wire holes 13, which penetrate the protrusion 12 along the axial direction Y of the support 100, and the plurality of wire holes 13 are distributed along the circumferential direction and the radial direction X of the support 100. As an example, in the radial direction X of the support 100, the plurality of wire holes 13 are evenly divided into 3 layers along the radial direction. In the circumferential direction of the support 100, each layer of wire holes 13 is evenly distributed along the circumference, and the number is 32. The number of layers of wire holes 13 in the radial direction X of the support 100 and the number in the circumferential direction of the support 100 can be adjusted according to the size of the support 100.

[0070] Referring to Figure 1 And Figure 5The support 100 can further include a suture 7, which can be sequentially threaded through the plurality of wire holes 13 and the first ply 2 provided corresponding to the wire holes 13, and the suture 7 can be pressed against the top region of the first ply 2 in the radial direction X of the support 100. The suture 7 can tightly suture the inner core 1, the first ply 2 and the second ply 3 together, greatly enhancing the interlayer bonding strength and preventing delamination from occurring in use. The material of the suture 7 is, for example, high-strength glass fiber or aramid fiber, etc. In the embodiment, the material of the suture 7 is preferably aramid fiber, which has better toughness and avoids breakage of the suture 7 during suturing.

[0071] For example, the wire hole 13 has a hole diameter of 2mm to 3mm, the distance between adjacent wire holes 13 in the radial direction X of the support 100 is L1, which satisfies: L1≤40mm, and the distance between adjacent wire holes 13 in the circumferential direction of the support 100 is L2, which satisfies: L2≤80mm.

[0072] The support 100 of the present application, through the cooperation of the inner core 1, the first ply 2, the second ply 3, the third ply 4, the fourth ply 5 and the fifth ply 6, makes the fibers inside the support 100 arranged regularly, with most of the fibers in the same direction as the radial direction X of the stress direction, effectively dispersing the stress and improving the overall mechanical properties of the support 100, so that it can withstand a high-strength impact load of 1000 tons, and the structure remains intact after impact without cracks.

[0073] According to the second aspect of the present application, an embodiment of the present application provides a forming method of a support for manufacturing the support 100, the forming method of the support comprising: providing an inner core 1 and laying fibers.

[0074] Referring to Figure 4 The inner core 1 is provided. Specifically, the inner core 1 is formed by winding glass fiber epoxy resin and glass cloth around the tooth root 11 and the raised portion 12. After winding, curing is performed to form a blank of the inner core 1. The blank of the cured inner core 1 is machined to form the required inner core 1. The curing conditions can be set according to actual needs. For example, the blank of the inner core 1 is formed by curing in a curing oven at 150℃ for 7 hours.

[0075] Referring to Figure 4 and Figure 6 Before the step of laying fibers, the forming method further comprises: forming a plurality of wire holes 13 on the raised portion 12, the wire holes 13 penetrating through the raised portion 12 along the axial direction Y of the support 100, and the plurality of wire holes 13 are arranged and distributed along the circumferential direction and the radial direction X of the support 100.

[0076] Specifically, the tool is used to form a plurality of linear holes 13, such as circular holes, through the convex portion 12 in the axial direction Y of the support 100, and the linear holes 13 can have a diameter of 2.5 mm. The tool can be a drill press.

[0077] The step of laying fibers can include laying the first ply 2 from the first bearing surface 1121 along the contour of the convex portion 12 to the second bearing surface 1122.

[0078] Specifically, referring to Figure 5 , the first ply 2 can be made of glass fiber prepreg with a thickness of 0.2 mm. The glass fiber prepreg with a thickness of 0.2 mm is continuously laid from the first bearing surface 1121 of the inner core 1 to the second bearing surface 1122 along the contour of the convex portion 12, and the cycle is repeated to lay a predetermined number of layers of glass fiber prepreg.

[0079] In some embodiments, referring to Figure 1 and Figure 5 , the step of laying fibers can further include laying the second ply 3 on the top area of the first ply 2 in the radial direction X of the support 100 during the laying of the first ply 2, and the laying direction of the second ply 3 is perpendicular to the radial direction X of the support 100. The second ply 3 can be made of glass fiber prepreg with a thickness of 0.2 mm.

[0080] Specifically, the first ply 2 is laid from the first bearing surface 1121 along the contour of the convex portion 12 to the second bearing surface 1122, and a predetermined number of layers are laid, and then a predetermined number of layers of the second ply 3 are laid on the top area of the first ply 2 in the radial direction X of the support 100, and the cycle is repeated until the total thickness of the first ply 2 and the second ply 3 in the radial direction X of the support 100 reaches a predetermined thickness.

[0081] The laying angle of the first ply 2 can be one or more of +10°, -10°, +15°, -15°, +40°, -40°, or a combination of the above angles. As an example, the first ply 2 is laid from the first bearing surface 1121 along the profile of the protrusion 12 to the second bearing surface 1122 in the manner of [±10° / ±10° / ±15° / ±40°]2, i.e. the laying angle of the first ply 2 is in the order of +10°, -10°, +10°, -10°, +15°, -15°, +40°, -40°, +10°, -10°, +10°, -10°, +15°, -15°, +40°, -40°, and after 16 layers of the first ply 2 are laid, 1 layer of the second ply 3 is laid on the top area of the first ply 2 in the radial direction X of the support 100, which is repeated as a cycle until the total thickness of the first ply 2 and the second ply 3 in the radial direction X of the support 100 reaches a predetermined thickness. The total thickness of the first ply 2 and the second ply 3 in the radial direction X of the support 100 is, for example, 15 mm. Of course, the laying manner and the number of layers of the first ply 2 and the second ply 3 can also be adjusted according to actual conditions. For example, 8 layers of the first ply 2 are laid and then 1 layer of the second ply 3 is laid, or 16 layers of the first ply 2 are laid and then 2 layers of the second ply 3 are laid.

[0082] In some embodiments, with reference to Figure 1 and Figure 5 the step of laying the fibers can further include laying a third ply 4 on the outside of the top area of the first ply 2 in the radial direction X of the support 100, the laying direction of the third ply 4 being parallel to the radial direction X of the support 100. The material of the third ply 4 is, for example, a glass fiber prepreg with a thickness of 0.2 mm.

[0083] In some embodiments, with reference to Figure 1 and Figure 5 the step of laying the third ply 4 on the outside of the top area of the first ply 2 in the radial direction X of the support 100, the laying direction of the third ply 4 being parallel to the radial direction X of the support 100, further includes fiber stitching.

[0084] The step of stitching the fibers includes: using the stitching thread 7 to sequentially pass through the plurality of thread holes 13 and the first ply 2 arranged correspondingly with the thread holes 13, i.e., the stitching thread 7 sequentially passes through a plurality of thread holes 13 and the first ply 2 arranged correspondingly with the thread holes 13 in a predetermined order, so as to tightly stitch the inner core 1 and the first ply 2 together, greatly enhancing the interlayer bonding strength and preventing delamination in use. As an example, aramid fibers are used as the stitching thread 7 to sequentially pass through a group of thread holes 13 distributed along the radial direction X of the support 100 and the first ply 2 arranged correspondingly with the thread holes 13, and then sequentially pass through another group of thread holes 13 distributed along the radial direction X of the support 100 and the first ply 2 arranged correspondingly with the thread holes 13, and so on. The stitching tension is, for example, 6N to 8N. If the stitching tension is too small, the stitching thread is too loose and cannot generate sufficient pressure on the first ply 2 and the second ply 3, and during subsequent processing and curing, the layers are prone to relative displacement, forming gaps or delamination. If the stitching tension is too large, the excessive tension can damage or even break the fibers through which the stitching thread passes, causing damage at the microscopic level, forming stress concentration points, and the excessive tension can also locally pull and twist the fiber direction, changing the predetermined fiber orientation and affecting the mechanical property distribution of the final component. Proper stitching tension can tightly fix the layers of material together, eliminate interlayer gaps, and significantly improve interlayer shear strength, thereby effectively preventing delamination during use, especially under impact load.

[0085] In some embodiments, during the stitching process, part of the stitching thread 7 can be arranged on the outermost layer of the first ply 2 in the radial direction X of the support 100, so as to tightly stitch the inner core 1, the first ply 2 and the second ply 3 together, greatly enhancing the interlayer bonding strength and preventing delamination in use. As an example, when the stitching thread 7 sequentially passes through a group of thread holes 13 distributed along the radial direction X of the support 100 and the first ply 2 arranged correspondingly with the thread holes 13, the stitching thread 7 can cross the outermost layer of the first ply 2 in the radial direction X of the support 100, and then sequentially pass through another group of thread holes 13 distributed along the radial direction X of the support 100 and the first ply 2 arranged correspondingly with the thread holes 13.

[0086] In some embodiments, referring to Figure 1 and Figure 5 , the step of laying the fibers can further include: laying the fourth ply 5 on both sides of the first ply 2 in the axial direction Y of the support 100. The fourth ply 5 is located on both sides of the protruding portion 12 in the axial direction Y of the support 100, and the first ply 2 on both sides of the protruding portion 12 is symmetrically arranged. A predetermined number of fourth plies 5 are laid in the axial direction Y of the support 100. Each layer of the fourth ply 5 can be arranged extending away from the tooth root 11 from the second surface 112 of the tooth root 11, and extending to the end of the third ply 4 away from the first ply 2. The material of the fourth ply 5 is, for example, glass fiber prepreg with a thickness of 0.2mm.

[0087] In some embodiments, referring to Figure 1 and Figure 5 , the step of laying fibers can further include: laying the fifth ply 6 alternately with the fourth ply 5 during laying the fourth ply 5. The fourth ply 5 can be laid first and then the fifth ply 6, i.e., the fourth ply 5 is arranged in abutment with the first ply 2. The fifth ply 6 can also be laid first and then the fourth ply 5, i.e., the fifth ply 6 is arranged in abutment with the first ply 2. The material of the fifth ply 6 is, for example, a glass fiber prepreg with a thickness of 0.2 mm.

[0088] Specifically, the fifth ply 6 is laid alternately with the fourth ply 5 for at least one cycle. Then the fourth ply 5 is laid alone until the thickness of the fourth ply 5 in the axial direction Y of the support 100 reaches the preset thickness.

[0089] The laying angle of the fourth ply 5 and the fifth ply 6 can be one or more of 0°, 90°, 45°, -45°, or a combination of the above angles. The fourth ply 5 is laid first and then the fifth ply 6, and the fifth ply 6 is laid alternately with the fourth ply 5. The thickness ratio of the fourth ply 5 and the fifth ply 6 in the axial direction Y of the support 100 can be 1:3, and the thickness ratio of the fourth ply 5 and the fifth ply 6 in the axial direction Y of the support 100 can also be adjusted according to actual needs.

[0090] As an example, 12 layers of the fourth ply 5 are laid first and then 4 layers of the fifth ply 6 are laid, which is one cycle, and this cycle is repeated twice. More specifically, the laying manner of the fourth ply 5 is [0° / 90° / ±45°]3, i.e., the laying angle of the fourth ply 5 is in the order of 0°, 90°, +45°, -45°, 0°, 90°, +45°, -45°, 0°, 90°, +45°, -45°, and the laying manner of the fifth ply 6 is [0° / 90° / ±45°], i.e., the laying angle of the fifth ply 6 is in the order of 0°, 90°, +45°, -45°, which is one cycle and repeated twice.

[0091] After the fifth ply 6 is laid alternately with the fourth ply 5 for two cycles, the fourth ply 5 is laid alone, and the laying manner is [0° / 90° / ±45°], i.e., 4 layers of the fourth ply 5 are laid as one cycle, and this cycle is repeated until the thickness of the fourth ply 5 in the axial direction Y of the support 100 reaches the preset thickness. In some embodiments, the laying manner and the number of layers of the fourth ply 5 and the fifth ply 6 can also be adjusted according to actual conditions.

[0092] In this embodiment, referring to Figure 1 , Figure 5 and Figure 7The laying angles of the first ply 2, the fourth ply 5 and the fifth ply 6 refer to that, taking a radial direction X of the selected support 100 as a reference, the angles between the fiber directions in the first ply 2, the fourth ply 5 and the fifth ply 6 and the reference are the respective laying angles. As an example, when the angle between the fiber direction in the first ply 2 and the reference is 10°, the laying angle of the first ply 2 is 10°, and when the angles between the fiber directions in the fourth ply 5 and the fifth ply 6 and the reference are 45°, the laying angles of the fourth ply 5 and the fifth ply 6 are 45°.

[0093] In some embodiments, the step of laying the fibers further comprises Figure 8 The step of consolidating the laid fibers further comprises: placing the inner core 1 of the laid fibers together in the mold 200, placing the mold 200 in the press 300, starting the press 300, and pressing the mold 200 to 9-11 MPa. The cavity shape of the mold 200 matches the shape of the support 100, and when consolidating, the press applies pressure to the mold, which can not only extrude the green body into a predetermined shape, but also can discharge the gas in the green body, so as to improve the density of the support 100, thereby improving the structural strength and fiber content of the support 100.

[0094] In some embodiments, the step of consolidating the laid fibers further comprises pressure holding and curing. The step of pressure holding and curing comprises: keeping the pressure of the press 300 at 9-11 MPa, starting the heating system, sequentially performing first heating, second heating and third heating, turning off the heating power after the holding temperature is reached, and then naturally cooling to room temperature under the pressure holding state to form a semi-finished product.

[0095] The first heating condition is: the temperature is 65-75°C, and the heating time is 1.5-2.5 hours; the second heating condition is: the temperature is 85-95°C, and the heating time is 1.5-2.5 hours; and the third heating condition is: the temperature is 145-155°C, and the heating time is 5.5-6.5 hours.

[0096] As an example, under the pressure of 10 MPa, the heating system is started, the temperature of the mold 200 is raised from room temperature to 70°C, and held at this temperature for 2 hours, the temperature of the mold 200 is continuously raised to 90°C, and held at this temperature for 2 hours, the temperature of the mold 200 is continuously raised to 150°C, and held at this temperature for 6 hours, after the holding temperature is reached, the heating power is turned off, and then naturally cooled to room temperature under the pressure holding state.

[0097] In some embodiments, the step of pressure-curing is followed by a step of demolding. The step of demolding comprises separating the semi-finished product from the mold 200. Specifically, a demolding top ring (not shown) is placed on the press 300, and then the mold 200 is placed on the demolding top ring, and the upper mold of the mold 200 and the semi-finished product are sequentially ejected by the pressure of the press 300.

[0098] In some embodiments, the step of demolding is followed by a step of machining. The step of machining comprises machining the semi-finished product to a predetermined size to form the support 100. As an example, the semi-finished product is hoisted onto a numerical control lathe, and the semi-finished product is machined to a predetermined size to form the support 100.

[0099] The support 100 produced by the forming method of the support of the present application has a uniform thermal expansion coefficient and a low thermal conductivity, and has good dimensional stability. In an alternating environment of -196°C to 120°C, the support 100 can long-term maintain structural strength and impact resistance, and after cold impact (3 hours in a -196°C environment), the outer diameter changes by not more than 0.2 mm, and the surface has no new visible cracks and other defects, meeting the use requirements of low-temperature storage tanks. Through the mold closing and pressing and multi-stage pressure-curing process, the compactness and fiber volume content of the support 100 are effectively improved, for example, the fiber volume content can reach 60%±3%, further enhancing the mechanical properties and thermal insulation performance of the support 100, reducing the thermal conductivity, reducing the heat transfer in a low-temperature environment, and ensuring the storage quality of low-temperature liquids. The cooperation of the wire hole 13 and the suture line 7 provided on the inner core 1 tightly connects the inner core 1, the first ply 2 and the second ply 3 into a whole, effectively preventing delamination between the plies, and improving the structural stability of the support 100; at the same time, the specific laying method and thickness ratio design of each ply further optimize the structural strength distribution of the support 100, ensuring that it is not easy to deform or be damaged during long-term use.

[0100] The support 100 produced by the forming method of the support of the present application is subjected to performance testing.

[0101] Cold impact test: the support 100 is placed in a liquid nitrogen environment of -196°C for 3 hours, and then restored to room temperature. The outer diameter change is less than 0.2 mm, and the surface is observed to have no new visible cracks and other defects using a 5x magnifying lens.

[0102] Vacuum baking test: the support 100 is placed in a vacuum oven and baked at 120°C for 24 hours. The outer diameter change before and after baking is less than 0.2 mm, and the surface is observed to have no new visible cracks and other defects using a 5x magnifying lens.

[0103] Impact resistance test: after the support 100 is subjected to cold impact test and vacuum baking test, the support 100 is subjected to impact resistance test. The support 100 can withstand impact load of up to 1000 tons (after 2 impacts, the structure remains intact without cracks).

[0104] From the test results, it can be seen that the support 100 produced by the forming method of the support of the present application can be used in an alternating environment of -196℃ to 120℃ for a long time, maintains structural strength and impact resistance, and can meet the use requirements in extreme harsh environments such as ultra-low temperature, high load and strong impact.

[0105] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of 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 specifically limited.

[0106] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0107] The embodiments, implementation manners and related technical features of the present application can be combined and replaced with each other without conflict.

[0108] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present application without departing from the technical solution of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A support member characterized by, The support member comprises: an inner core comprising a tooth root having opposite first and second faces in the radial direction of the support member, and a protrusion provided on the second face of the tooth root and extending in the radial direction of the support member, the protrusion dividing the second face of the tooth root into first and second load bearing faces distributed in the axial direction of the support member; a first ply extending from the first load bearing face to the second load bearing face along the profile of the protrusion.

2. The bearing of claim 1, wherein The support member further comprises a second ply embedded on the top region of the first ply in the radial direction of the support member, the second ply extending in the axial direction of the support member.

3. The bearing of claim 1, wherein The support member further comprises a third ply provided outside the top region of the first ply in the radial direction of the support member, the third ply extending in the radial direction of the support member.

4. The bearing of claim 3, wherein The support member further comprises a fourth ply provided outside the first and third plies in the axial direction of the support member and stacked in the axial direction of the support member.

5. The bearing of claim 4, wherein The support member further comprises a fifth ply provided outside the first ply in the axial direction of the support member and stacked alternately with the fourth ply in the axial direction of the support member.

6. The bearing of claim 1, wherein The protrusion is provided with a plurality of wire holes penetrating the protrusion in the axial direction of the support member, the plurality of wire holes being distributed in the circumferential and radial directions of the support member. The support member further comprises a suture wire sequentially penetrating the plurality of wire holes and the first ply provided corresponding to the wire holes.

7. The bearing of claim 6, wherein The wire holes have a diameter of 2-3 mm, the distance between adjacent wire holes in the radial direction of the support member is less than or equal to 40 mm, and the distance between adjacent wire holes in the circumferential direction of the support member is less than or equal to 80 mm.

8. The bearing of claim 1, wherein In the radial direction of the support member, the height of the inner core is 80-90% of the height of the support member. The thickness of the protrusion at one end close to the tooth root in the radial direction of the support member is greater than the thickness of the protrusion at one end away from the tooth root in the radial direction of the support member, and the thickness of the tooth root in the radial direction of the support member is 35-45% of the maximum thickness of the protrusion in the axial direction of the support member.

9. A method of forming a bearing, characterized by, A method for manufacturing the support member as claimed in any one of claims 1-8, the method comprising: providing the inner core; laying fibers, the step of laying fibers comprising: laying the first ply from the first load bearing face to the second load bearing face along the profile of the protrusion.

10. The forming method of a bearing according to claim 9, wherein The step of laying fibers further comprises laying a second ply on the top region of the first ply in the radial direction of the support member during laying of the first ply, the laying direction of the second ply being perpendicular to the radial direction of the support member.

11. The forming method of a bearing according to claim 10, wherein The step of laying the second ply on the top area of the first ply in the radial direction of the support during the laying of the first ply comprises: laying the first ply from the first bearing surface along the profile of the protrusion to the second bearing surface and laying a preset number of plies, and then laying a preset number of plies of the second ply on the top area of the first ply in the radial direction of the support, as one cycle, repeating the cycle until the total thickness of the first ply and the second ply in the radial direction of the support reaches a preset thickness.

12. The forming method of a bearing according to claim 9, wherein The step of laying the fiber further comprises: laying a third ply on the outside of the top area of the first ply in the radial direction of the support, and the laying direction of the third ply is parallel to the radial direction of the support.

13. The forming method of a bearing according to claim 12, wherein The step of laying the fiber further comprises: forming a plurality of wire holes on the protrusion, the wire holes penetrating through the protrusion in the axial direction of the support, and a plurality of the wire holes are arranged in the circumferential and radial directions of the support. The step of laying the third ply on the outside of the top area of the first ply in the radial direction of the support, and the laying direction of the third ply is parallel to the radial direction of the support, further comprises fiber stitching. The step of fiber stitching comprises: sequentially threading a plurality of the wire holes and the first ply arranged corresponding to the wire holes with a stitching thread.

14. The method of forming a bearing of claim 9, wherein, The step of laying the fiber further comprises: laying a fourth ply on both sides of the first ply in the axial direction of the support, respectively.

15. The method of forming a bearing of claim 14, wherein, The step of laying the fiber further comprises: during the laying of the fourth ply, laying a fifth ply alternately and layer by layer with the fourth ply.

16. The method of forming a bearing of claim 15, wherein, The step of laying the fifth ply alternately and layer by layer with the fourth ply during the laying of the fourth ply comprises: The fifth ply is alternately and layer by layer laid with the fourth ply for at least one cycle; Then the fourth ply is laid alone until the thickness of the fourth ply in the axial direction of the support reaches a preset thickness.

17. The method of forming a bearing of claim 9, wherein, The step of laying the fiber is followed by mold closing and pressing; The step of mold closing and pressing comprises: placing in a mold, and pressing the mold by a press to 9MPa to 11MPa.

18. The method of forming a bearing of claim 17, wherein, The step of mold closing and pressing is followed by pressure holding and curing; The step of pressure holding and curing comprises: the pressure of the press is maintained at 9MPa to 11MPa, and first heating, second heating and third heating are sequentially performed, and then naturally cooled to room temperature to form a semi-finished product; The first heating is at a temperature of 65℃ to 75℃ and a heating time of 1.5 hours to 2.5 hours, the second heating is at a temperature of 85℃ to 95℃ and a heating time of 1.5 hours to 2.5 hours, and the third heating is at a temperature of 145℃ to 155℃ and a heating time of 5.5 hours to 6.5 hours.

19. The method of forming a bearing of claim 18, wherein, The step of pressure holding and curing is followed by demolding; The step of demolding comprises: separating the semi-finished product from the mold.

20. The method of forming a bearing of claim 19, wherein, The step of demolding is followed by a step of machining; The step of machining comprises machining the semi-finished product to a predetermined size to form the support.

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