Composite cable with large deformation capability

Abstract

The application discloses a composite cable with large deformation capacity, which comprises a cable body and an elastic body. The cable body is formed with a deformation cavity, and the wall of the deformation cavity is convex in the plane perpendicular to the stress direction of the cable body. The elastic body is arranged in the deformation cavity and connected with the inner wall of the deformation cavity. When the cable body is stressed, the wall of the deformation cavity is adapted to deform and extrude the elastic body. Due to the existence of the deformation cavity and the elastic body, the cable body of the application has good deformation capacity while maintaining the bearing capacity, can extrude the elastic body to realize deformation, improve the extension performance and tensile performance of the composite cable, avoid being directly pulled off, and can be applied to the working conditions with high deformation capacity requirement, and can meet the demand of the specific application field for the deformation capacity of the composite cable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil engineering, and in particular to a composite cable with large deformation capacity. BACKGROUND

[0002] In the related art, cables are generally made of steel cable structures, but the traditional steel cable has a large self-weight, low bearing efficiency, is prone to corrosion, and has high maintenance costs. Therefore, composite cables are generally used to replace steel cables. Composite cables have excellent mechanical properties and corrosion resistance and are widely used in the fields of bridges, roof reinforcement, and foundation anchoring. In certain technical fields, complex working conditions have high requirements for the deformation capacity of cables. However, composite cables have the disadvantage of brittleness due to their material properties, and have poor deformation capacity. When the stress reaches a certain limit or is affected by other external forces, the composite cables are prone to sudden rupture and damage, which cannot meet the requirements of practical applications. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the purpose of the present application is to provide a composite cable with large deformation capacity, which has good deformation capacity and can improve the tensile performance of the cable to meet the application requirements of complex working conditions.

[0004] The present application provides a composite cable with large deformation capacity, which includes a cable body and an elastic body. The cable body forms a deformation cavity, and the wall of the deformation cavity protrudes in a plane perpendicular to the stress direction of the cable body. The elastic body is arranged in the deformation cavity and connected with the inner wall of the deformation cavity. When the cable body is stressed, the wall of the deformation cavity is adapted to deform and extrude the elastic body.

[0005] According to the composite cable of the present application, due to the presence of the deformation cavity, the cable body has good deformation capacity and can improve the extension performance and tensile performance of the composite cable by deformation, avoiding being directly pulled apart, and can be applied to complex working conditions with unstable stress. At the same time, the elastic body can delay the deformation process, increase the stability of the composite cable, and improve the bearing capacity of the composite cable during the deformation process.

[0006] According to some embodiments of the present application, the deformation cavity is configured as a through hole, and the wall of the through hole protrudes in a plane perpendicular to the stress direction of the cable body to form an arched section. The arched section is adapted to deform and extrude the elastic body when the cable body is stressed.

[0007] According to some embodiments of the present application, the cable body comprises a first body and a second body, the first body is formed with a first flat section, a first arched section and a second flat section, two ends of the first arched section are connected to the first flat section and the second flat section respectively; the second body is formed with a third flat section, a second arched section and a fourth flat section, two ends of the second arched section are connected to the third flat section and the fourth flat section respectively; wherein the first flat section is attached to the third flat section, and the second flat section is attached to the fourth flat section; a through hole is formed between the first arched section and the second arched section.

[0008] According to some embodiments of the present application, the cable body is configured as a fiber-reinforced composite material piece.

[0009] According to some embodiments of the present application, the fiber-reinforced composite material piece comprises fibers, the fibers are configured as a plurality of fibers extending in the force direction of the cable body, and at least part of the fibers protrude in a direction perpendicular to the force direction of the cable body to form the arched section.

[0010] According to some embodiments of the present application, the elastic body is configured to extend in the force direction of the cable body, and the thickness of the elastic body gradually decreases in the extending direction.

[0011] According to some embodiments of the present application, the composite cable further comprises a damping piece, the damping piece is arranged inside the elastic body.

[0012] According to some embodiments of the present application, the damping piece is configured as a plurality of damping bodies arranged at intervals in the force direction of the cable body.

[0013] According to some embodiments of the present application, the deformation cavity is configured as a plurality of deformation cavities arranged at intervals in the force direction of the cable body.

[0014] According to some embodiments of the present application, the cable body further comprises a constraint piece, the constraint piece is formed with a first pressing part and a second pressing part, part of the first body and the second body is arranged between the first pressing part and the second pressing part, the first pressing part and the second pressing part are adapted to be close to each other and apply pressure to the first body and the second body to limit the relative movement between the first body and the second body.

[0015] Additional aspects and advantages of the present application will be made apparent from the following description, which, taken in conjunction with the accompanying drawings, that will further illustrate the principles of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0017] Fig. 1 is a schematic view of a composite cable structure according to some embodiments of the present application;

[0018] Fig. 2 is a schematic diagram of the cooperation state of the first body and the second body according to some embodiments of the present application;

[0019] Fig. 3 is a schematic diagram of the structure of the cable body according to some embodiments of the present application.

[0020] Reference signs:

[0021] cable body 10;

[0022] first body 11; first flat section 111; first arched section 112; second flat section 113;

[0023] second body 12; third flat section 121; second arched section 122; fourth flat section 123;

[0024] restraining member 13; first pressing part 131; second pressing part 132; fastener 133;

[0025] deformation cavity 20; elastic body 30. DETAILED DESCRIPTION

[0026] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which the same or similar notations used throughout the drawings and the specific description denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and cannot be understood as limiting the present application.

[0027] Reference is made below to Figs. 1-3 a composite cable with large deformation capacity according to embodiments of the present application.

[0028] The present application proposes a composite cable with large deformation capacity, which comprises a cable body 10 and an elastic body 30; the cable body 10 is formed with a deformation cavity 20, the wall of the deformation cavity 20 is convex in a plane perpendicular to the stress direction of the cable body 10; the elastic body 30 is arranged in the deformation cavity 20 and connected with the inner wall of the deformation cavity 20, and the wall of the deformation cavity 20 is adapted to deform and extrude the elastic body 30 when the cable body 10 is stressed.

[0029] According to the composite cable of the present application, the cable body 10 is formed with a deformation cavity 20, and the wall of the deformation cavity 20 protrudes in a plane perpendicular to the stress direction of the cable body 10. When the cable body 10 is stressed, the wall of the deformation cavity 20 has a tendency to contract into the deformation cavity 20 and elongate along the stress direction under the action of tension, so that the cable body 10 has good deformation ability and can be deformed greatly under the action of tension, thereby improving the extension performance of the composite cable through deformation, and further improving the tensile performance of the composite cable, overcoming the brittle characteristics and avoiding being directly pulled off. At the same time, the elastomer 30 is arranged in the deformation cavity 20 and connected with the inner wall of the deformation cavity 20. When the wall of the deformation cavity 20 contracts inward, the elastomer 30 is extruded, the elastomer 30 is deformed cooperatively, and the elastic force of the elastomer 30 acts on the wall of the deformation cavity 20, which can inhibit the inward contraction of the wall to some extent, slow down the deformation, avoid sudden change of the cable body 10, increase the stability of the composite cable, and increase the load-carrying capacity during the deformation of the composite cable.

[0030] It should be noted that the deformation ability of the composite cable in the related art generally only comes from the elastic deformation of the material itself, and the elastic deformation ability of the commonly used fiber reinforced composite material in the cable is small, such as the commonly used carbon fiber reinforced composite material which only has an elastic deformation ability of 1%-2%. Through the improvement of the structure of the composite cable and the cooperative deformation of the elastomer 30, the composite cable of the present application can realize a larger deformation amount, and in some embodiments, the deformation amount can reach 5%-10%, so the composite cable of the present application has a large deformation ability.

[0031] According to the composite cable of the present application, due to the existence of the deformation cavity 20, the cable body 10 has good deformation ability and can increase the extension performance and tensile performance of the composite cable through deformation to avoid being directly pulled off, and can be applied to complex working conditions such as unstable stress; at the same time, the elastomer 30 can slow down the deformation process, increase the stability of the composite cable, and also improve the load-carrying capacity during the deformation of the composite cable. The composite cable of the present application has good stability and reliability, and can meet the needs of specific application fields for the deformation ability of the composite cable.

[0032] According to some embodiments of the present application, the deformation cavity 20 is configured as a through hole, and the wall of the through hole is convex in a plane perpendicular to the force direction of the cable body 10 to form an arch section, which is adapted to deform and extrude the elastic body 30 when the cable body 10 is subjected to force. In this embodiment, the deformation cavity 20 is configured as a through hole, and the wall of the deformation cavity 20 is configured as an arch section. When the composite cable is subjected to a certain tensile force, the arch section has a tendency to straighten under the action of the tensile force. The cable body 10 has a tendency to elongate along the force direction, so that the cable body 10 can increase the extension performance of the composite cable by elongation deformation, thereby improving the tensile performance of the composite cable. The present application utilizes the structure of the stretchable arch section and the through hole to make the composite cable have the space and ability to deform. When the arch section deforms, it is not constrained by its own structure in the circumferential direction around the force direction, so that it can be more easily straightened along the force direction and has higher deformation ability.

[0033] According to some embodiments of the present application, the cable body 10 includes a first body 11 and a second body 12. The first body 11 is formed with a first flat section 111, a first arch section 112 and a second flat section 113. The two ends of the first arch section 112 are connected to the first flat section 111 and the second flat section 113, respectively. The second body 12 is formed with a third flat section 121, a second arch section 122 and a fourth flat section 123. The two ends of the second arch section 122 are connected to the third flat section 121 and the fourth flat section 123, respectively. The first flat section 111 is attached to the third flat section 121, and the second flat section 113 is attached to the fourth flat section 123. The first arch section 112 and the second arch section 122 form a through hole therebetween.

[0034] It should be noted that, for the sake of simplifying the description language, the flat section referred to in the present application refers to any one or more of the first flat section 111, the second flat section 113, the third flat section 121 and the fourth flat section 123.

[0035] In this embodiment, as shown in FIG. 1, the first body 11 and the second body 12 are connected to each other to form the cable body 10. Fig. 2As shown, the cable body 10 of the embodiment is composed of a first body 11 and a second body 12, the flat sections of the first body 11 and the second body 12 are attached to each other, and the arch sections are correspondingly matched to form a through hole. The cable body 10 of the embodiment is convenient for processing and forming, and is also convenient for installing the elastic body 30 in the through hole. Further, the first body 11 and the second body 12 are both configured as a structure symmetrical about the middle line of the two side force receiving ends, and the arch sections can be deformed symmetrically under the action of the force receiving at the two ends; and the first body 11 and the second body 12 are symmetrical about the attached surface therebetween, and the first body 11 and the second body 12 can be deformed cooperatively when the cable body 10 is under force, keeping the deformation synchronous, thereby ensuring that the first body 11 and the second body 12 are under uniform force and ensuring the stability of the deformation process of the composite cable structure. In some embodiments, the first body 11 and the second body 12 can be attached by resin to make the first body 11 and the second body 12 closely attached, thereby improving the connection strength and reliability of the cable body 10.

[0036] According to some embodiments of the present application, the cable body 10 is configured as a fiber-reinforced composite material piece, the fiber-reinforced composite material piece includes fibers, the fibers are configured as a plurality of fibers extending in the force receiving direction of the cable body 10, and at least part of the fibers protrude in the direction perpendicular to the force receiving direction of the cable body 10 to form the arch section. In the embodiment, the cable body 10 is configured as a fiber-reinforced composite material piece, and the fiber-reinforced composite material is a composite material formed by reinforcing fiber material such as glass fiber, carbon fiber, aramid fiber, etc. and matrix material through laminating, molding or pultrusion forming process. Specifically, the cable body 10 is a cable body with multiple fiber layers formed by curing unidirectional fiber prepreg according to a prefabricated mold. It should be noted that the unidirectional fiber prepreg is a composite material processed by film coating, hot pressing, cooling and film covering process of fiber tows and resin. The extension direction of the fibers is consistent with the form extension direction of the cable body 10, which is along the force receiving direction of the cable body 10 in the flat section, and protrudes in the direction perpendicular to the force receiving direction to extend along the arch in the arch section. In the composite cable of the embodiment, the fibers in each finite element of the cable body 10 extend along the force receiving direction of the finite element; when the cable body 10 is under force, the tension will be transmitted along the extension direction of the fibers. The mechanical properties of the composite cable of the embodiment are excellent, and the consistency of processing can be maintained by curing and forming.

[0037] It should be noted that the elastic body 30 in the present application can be configured as an elastic material piece formed by a hard elastic material to adapt to the shape of the through hole, or can be configured as an elastic structure piece with elastic properties such as a spring. The direction of at least partial elastic deformation of the elastic body 30 is perpendicular to the force receiving direction of the cable body 10.

[0038] According to some embodiments of the present application, the elastic body 30 is configured to extend in the force direction of the cable body 10, and the thickness of the elastic body 30 gradually decreases in the extending direction. In the present embodiment, the thickness direction of the elastic body 30 refers to the direction perpendicular to the force direction of the cable body 10 and perpendicular to the extending direction of the through hole. Since the through hole is formed by the combination of the arch-shaped segments, the through hole gradually narrows along the two sides in the force direction, and the elastic body 30 is configured to extend in the force direction of the cable body 10 and gradually decrease in thickness in the extending direction, so that the shape of the elastic body 30 is more similar to the shape of the through hole, and the reaction force of each finite element of the elastic body 30 in the force direction of the composite cable is more matched to the pressure applied by each finite element of the arch-shaped segment to the elastic body 30. The elastic body 30 of the present embodiment can make the arch-shaped segment bear more uniform elastic reaction force, and can improve the effect of the elastic body 30.

[0039] According to some embodiments of the present application, the composite cable further comprises a damping member arranged inside the elastic body 30. In the present embodiment, when the cable body 10 vibrates under the action of external force, the damping member can have a damping effect on the overall structure of the composite cable, and improve the stability and adaptability of the composite cable.

[0040] In addition, the combination of the elastic body 30 and the damping member of the present embodiment can make the stiffness and deformation ability of the elastic body 30 variable and controllable, and the overall performance of the composite cable can be adjusted by changing the elastic body 30 and the damping member.

[0041] According to some embodiments of the present application, the damping member is configured as a plurality of damping bodies arranged at intervals in the force direction of the cable body 10. In the present embodiment, the damping member is configured as a plurality of damping bodies arranged at intervals in the force direction of the composite cable, and each damping body can have a damping effect on the cable body, and can better play the damping effect; and the distribution of the damping bodies affects the structural distribution of the elastic body 30, so that the arch-shaped segment bears more uniform elastic reaction force, and the stability of the composite cable is improved.

[0042] According to some embodiments of the present application, the deformation cavity 20 is configured as a plurality of deformation cavities arranged at intervals in the force direction of the cable body 10. In the present embodiment, by arranging a plurality of deformation cavities 20, the composite cable can have a plurality of deformation parts, and the deformation ability of the plurality of deformation parts is superimposed on each other, so that the composite cable has greater deformation ability and better improves the tensile effect of the composite cable. Further, by arranging a plurality of deformation cavities 20, the deformation can be dispersed to each deformation part, the deformation pressure of each deformation part can be reduced, and the processing and installation pressure of each deformation part can be reduced, so that the stability and reliability of the structure of the composite cable are improved.

[0043] In some embodiments, a connecting portion is arranged between two adjacent deformation cavities 20, and the connecting portion comprises two flat segments which are in abutment, and the two flat segments are arranged on the first body 11 and the second body 12 respectively.

[0044] According to some embodiments of the present application, the cable body 10 further comprises a constraint member 13, the constraint member 13 is formed with a first pressing portion 131 and a second pressing portion 132, and the first body 11 and the second body 12 are arranged between the first pressing portion 131 and the second pressing portion 132, and the first pressing portion 131 and the second pressing portion 132 are adapted to be close to each other and to apply pressure to the first body 11 and the second body 12 to limit the relative movement between the first body 11 and the second body 12.

[0045] It should be noted that when the arched segment of the cable body 10 is deformed under tension, a reaction force will be applied to the flat segments connected to the arched segment, and the component of the reaction force perpendicular to the force direction of the composite cable will cause the connecting portion of the flat segment to have a tendency to move perpendicular to the force direction. If not limited, it will cause the first body 11 and the second body 12 to separate along the abutment surface, and the structure of the cable body 10 will be damaged. The adhesion of the adhesive such as resin may not be strong enough to resist the reaction force, and the stability of the structure cannot be guaranteed.

[0046] The constraint member 13 of the present embodiment fixes the first body 11 and the second body 12 between the two pressing portions, which not only can apply a pre-pressure to the first body 11 and the second body 12 to make them closely abut, but also can apply a resistance to the first body 11 and the second body 12 to prevent the relative movement of the first body 11 and the second body 12 in the plane perpendicular to the force direction of the composite cable, thereby avoiding the opening of the cable body 10 along the abutment surface. The constraint member 13 of the present embodiment is provided with at least two, one of which is adapted to limit the relative movement between the first flat segment 111 and the third flat segment 121, and the other is adapted to limit the relative movement between the second flat segment 113 and the fourth flat segment 123.

[0047] In the composite cable embodiment with multiple deformation cavities 20, the constraint member 13 should be correspondingly provided with multiple constraint members, and arranged in the connecting portion between two adjacent deformation cavities 20, so as to avoid the relative movement of the two flat segments of the connecting portion to affect the deformation effect of the cable body 10.

[0048] In some embodiments, as Fig. 3As shown, the first pressing part 131 and the second pressing part 132 can be configured as clamps, which are arranged on both sides of the flat section and the arch section of the first body 11 and the second body 12 respectively, and are connected by fasteners 133 to adjust the distance between the two clamps to press the first body 11 and the second body 12. Further, the fasteners 133 can be configured as rivets or a combination of bolts and nuts, and the clamps are provided with fastening holes which can be arranged away from the first body 11 and the second body 12 to avoid damaging the structure of the cable body 10.

[0049] In some embodiments, one side of the first pressing part 131 and the second pressing part 132 is close to or coincides with the connecting line of the flat section and the arch section to avoid deformation of the flat section under the influence of the force of the arch section.

[0050] In the description of the present 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", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present 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 a limitation of the present application.

[0051] In the description of the present application, "first feature" and "second feature" can include one or more features.

[0052] In the description of the present application, "a plurality of" means two or more.

[0053] In the description of the present application, "above" or "below" the first feature and the second feature can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween.

[0054] In the description of the present application, "above", "over" and "on" the first feature and the second feature include the first feature directly above and obliquely above the second feature, or only indicate that the first feature is higher than the second feature in terms of horizontal height.

[0055] In the description of the specification, reference to "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "in some embodiments", "in an exemplary embodiment", "an example", "a specific example", or "some examples" in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0056] Although embodiments of the application have been illustrated and described, it will be clear to those of ordinary skill in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the principles and the spirit of the application. The scope of the application is limited only by the claims and the equivalents thereof.

Claims

1. A composite material cable with large deformation capacity, characterized in that, include: The cable body has a deformable cavity, the wall of which protrudes in a plane perpendicular to the direction of force on the cable body. An elastomer is disposed in the deformation cavity and connected to the inner wall of the deformation cavity. When the cable body is subjected to force, the wall of the deformation cavity is adapted to deform and compress the elastomer.

2. The composite cable with large deformation capacity according to claim 1, characterized in that, The deformable cavity is constructed as a through hole, and the wall of the through hole protrudes in a plane perpendicular to the direction of force on the cable body to form an arched section. The arched section is adapted to deform and compress the elastic body when the cable body is under force.

3. The composite cable with large deformation capacity according to claim 2, characterized in that, The cable body includes: A first main body, the first main body having a first straight section, a first arched section and a second straight section, the two ends of the first arched section being connected to the first straight section and the second straight section respectively; The second main body comprises a third straight section, a second arched section, and a fourth straight section, wherein the two ends of the second arched section are respectively connected to the third straight section and the fourth straight section; wherein The first straight section is in contact with the third straight section, and the second straight section is in contact with the fourth straight section; the through hole is formed between the first arched section and the second arched section.

4. The composite cable with large deformation capacity according to claim 3, characterized in that, The cable body is constructed of fiber-reinforced composite material.

5. The composite cable with large deformation capacity according to claim 4, characterized in that, The fiber-reinforced composite material component includes: The fibers are configured as a plurality of fibers extending in the direction of force on the cable body, and at least a portion of the fibers protrude in a direction perpendicular to the direction of force on the cable body to form the arched segment.

6. The composite material cable with large deformation capacity according to claim 2, characterized in that, The elastomer is configured to extend in the direction of force application of the cable body, and the thickness of the elastomer gradually decreases in the direction of extension.

7. The composite cable with large deformation capacity according to claim 2, characterized in that, Also includes: A damping element is disposed inside the elastic body.

8. The composite cable with large deformation capacity according to claim 7, characterized in that, The damping element is constructed as a plurality of damping bodies spaced apart in the direction of force applied to the cable body.

9. The composite cable with large deformation capacity according to claim 1, characterized in that, The deformation cavity structure consists of multiple cavities spaced apart in the direction of force application of the cable body.

10. The composite cable with large deformation capacity according to claim 3, characterized in that, The cable body also includes: A constraint member having a first pressing portion and a second pressing portion, wherein portions of the first body and the second body are disposed between the first pressing portion and the second pressing portion, the first pressing portion and the second pressing portion being adapted to approach each other and apply pressure to the first body and the second body to restrict relative movement between the first body and the second body.

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