A kind of hollow cable with curved groove and its manufacturing method

Abstract

The present invention belongs to the field of electric power technology and discloses a splicing cable with a curved groove, comprising a container, a transmission component, and a protective sleeve. The container is composed of at least two parallel, sequentially arranged, and integrated bodies, each having a curved groove extending along the length of the body. The protective sleeve is an integrated structure, forming a cavity between the protective sleeve and the container. The fitting strip of the protective sleeve fits on the main body of the container. Each curved groove has a transmission component extending along the curved groove, and the top end of the transmission component in each curved groove is above a first plane. The top end of the transmission component in each curved groove does not contact the lower surface of the limit strip. The transmission component is composed of a conductor and an insulating layer covering the conductor, or the transmission component is a structure having at least one optical fiber. The present application has the following main beneficial effects: simple structure, easy manufacturing, high construction efficiency, less cable damage, and longer splicing length.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power, and in particular relates to a hollow cable with a curved groove and a manufacturing method thereof. Background Art

[0002] With the popularization of electricity and fiber optic access to homes, the demand for fast construction is increasing. There are requirements for construction to minimize damage to the structure of the original cable, construction to be carried out without cutting the cable, and not affecting the use of other users.

[0003] CN109143516A discloses a sheath-embedded spliced ​​optical cable and a production method, comprising a sheath, a rigid reinforcement, a flexible water-blocking reinforcement, a micro-tube unit, a colored optical fiber, a first water-blocking element, and a second water-blocking element. The first water-blocking element and multiple colored optical fibers are wrapped with micro-tube units, and the multiple micro-tube units and the second water-blocking element are uniformly wrapped with flexible water-blocking reinforcements to form a cable core. The cable core is wrapped with a sheath, and multiple rigid reinforcements are embedded between the outer and inner surfaces of the sheath.

[0004] CN219046149U discloses an easily identifiable spliced ​​optical cable, comprising: an optical fiber cable having multiple strands twisted together around the periphery of a central reinforcement member; and an outer sheath tube wrapped around the periphery of the multiple strands of the optical fiber cables, the outer wall of the outer sheath tube being provided with multiple color strips that respectively locate the position of each optical fiber cable, the multiple color strips having different colors. The easily identifiable spliced ​​optical cable has multiple color strips that respectively locate the position of each optical fiber cable on the outer wall of the outer sheath tube, the multiple color strips having different colors. Because each optical fiber cable is identified and located by a color strip, the optical fiber cable that needs to be removed can be quickly found in the cable core. During use, only the optical fiber cable that needs to be removed needs to be pulled out, without having to remove all optical fiber cables. The probability of fiber breakage during the splicing process is greatly reduced.

[0005] However, the existing technology of splicing optical cables or electrical cables still has the following defects: the length of the cable that can be pulled out by a single cut is insufficient, the construction is very destructive to the cable, and the construction efficiency needs to be improved; the cable is easily damaged when the cable sheath is sliced ​​during construction. Summary of the Invention

[0006] In order to solve the above problems, the purpose of the present invention is to disclose a hollow cable with a curved groove and further provide a manufacturing method of the hollow cable; they are achieved by adopting the following technical solutions.

[0007] A spliced ​​cable with a curved groove comprises a container, a transmission component, and a protective sleeve. The transmission component is composed of a conductor and an insulating layer covering the conductor. The container is composed of at least two parallel bodies arranged in sequence and combined into one body. Each body has a curved groove extending along the length direction of the body. The curved groove is in the shape of a plurality of continuously curved curves. The curved groove does not pass through the lower surface of the body. The upper surfaces of all the bodies are in a first plane, and the lower surfaces of all the bodies are in a second plane. The first plane is parallel to the second plane. The protective sleeve is composed of a limiting strip and at least three bonding strips. The protective sleeve is an integrated structure. All the bonding strips extend downward from the lower surface of the limiting strip. The bonding strips are on the lower surface of the protective sleeve. The surfaces are arranged in parallel, the fitting strips are perpendicular to the limiting strips, the leftmost fitting strip is located below the left end of the limiting strip, and the rightmost fitting strip is located below the right end of the limiting strip. A cavity is formed between adjacent fitting strips, the lower surface of the leftmost fitting strip is bonded to the upper surface of the left end of the leftmost body, the lower surface of the rightmost fitting strip is bonded to the upper surface of the right end of the rightmost body, and the middle fitting strips are respectively bonded to the upper surfaces of the adjacent parts of the corresponding adjacent bodies below; each curved groove has a transmission component extending and distributed along the curved groove, and the upper end of the transmission component in each curved groove is above the first plane; the upper end of the transmission component in each curved groove does not contact the lower surface of the limiting strip.

[0008] The above-mentioned trenched cable with a curved groove has a sine or cosine shape.

[0009] In the above-mentioned hollow cable with a curved groove, part of the transmission component is inside the corresponding curved groove, and the other part of the transmission component is outside the corresponding curved groove. The transmission component outside the curved groove is located in the corresponding cavity and does not contact the limiting strip and the fitting strip forming the cavity.

[0010] In the above-mentioned hollow cable with curved grooves, all the curved grooves are distributed in parallel.

[0011] In the above-mentioned trenched cable with curved grooves, the conductor is replaced by at least one optical fiber.

[0012] A method for manufacturing the above-mentioned trenched cable with curved grooves comprises the following steps:

[0013] The steps of manufacturing the transmission components are as follows: manufacturing a sufficient number of transmission components according to the manufacturing method of the prior art and keeping them in reserve;

[0014] Steps for manufacturing a container: use one of the following methods to manufacture the container. The first method is: forming the container by extrusion, setting a movable mold core and a fixed mold sleeve in the machine head, the mold sleeve covers the mold core, a long hole is opened on the top of the mold core, and a long hole is also opened on the top of the mold sleeve. A plurality of parallel slide bars with intervals between each other are installed above the extruder head. The upper ends of the slide bars are fixed on the spur gears, and the lower ends of the slide bars pass through the long hole above the sleeve and then pass through the long hole above the mold core. There is a gap between the lower end of the slide bar and the bottom surface of the mold sleeve; the extruder head extrude the plastic and pull it forward and stretch it through the cooling water tank with cooling water to form the initial body of the container, and continuously pull the initial body of the container forward; at the same time, the spur gears The direction of movement is perpendicular to the initial traction direction of the accommodating body. The spur gear is connected to a reciprocating motor installed outside the machine head. The reciprocating motor causes the spur gear to reciprocate by repeatedly rotating forward, stopping, reversing, and stopping, and causes the slide bar to form a curved groove on the main body. The manufacturing of the accommodating body according to the first method is completed. The second method is: using a sharp slide bar to scrape out a curved groove on a pre-formed main body with a rectangular cross section. Specifically, the slide bar is moved vertically relative to the main body within a certain range of travel directly above the main body. Both the slide bar and the main body are moving. A part of the lower end of the slide bar is inserted into the upper surface of the main body. The relative movement of the slide bar and the main body eventually forms a curved groove. The manufacturing of the accommodating body according to the second method is completed.

[0015] The step of placing the transmission component is as follows: taking the manufactured transmission component and placing it in the curved groove and fitting the transmission component with the curved groove so that a part of the transmission component is located outside the curved groove;

[0016] Steps for installing the protective cover: take a pre-made protective cover, apply glue on the lower surface of the fitting strip, press the protective cover downward so that the lower surface of the fitting strip contacts the upper surface of the container, and make the lower surface of the leftmost fitting strip of the protective cover bonded to the upper surface of the left end of the leftmost body of the container; make the lower surface of the rightmost fitting strip of the protective cover bonded to the upper surface of the right end of the rightmost body of the container; make the lower surface of the middle fitting strip of the protective cover bonded to the upper surface of the adjacent part of the corresponding adjacent body of the container; and complete the installation of the protective cover.

[0017] The above-mentioned method for manufacturing a spliced ​​cable with a curved groove, the steps of installing the protective cover can also be: take a pre-manufactured protective cover, make the lower surface of the leftmost fitting strip of the protective cover contact with the upper surface of the left end of the leftmost body of the container; make the lower surface of the rightmost fitting strip of the protective cover contact with the upper surface of the right end of the rightmost body of the container; make the lower surface of the middle fitting strip of the protective cover contact with the upper surface of the adjacent part of the corresponding adjacent body of the container; when the protective cover and the container are in contact, make the protective cover and the container pass through an ultrasonic welding device in a working state, so that the protective cover and the container are in the ultrasonic welding device for no less than 2 seconds; and the installation of the protective cover is completed.

[0018] A splicing cable with a curved groove, wherein the cross-section of the container is a convex polygonal ring, each side of the convex polygonal ring is a body, the body is provided with a curved groove, the curved groove does not penetrate the inner surface of the body, and the curved groove is in the shape of multiple sections of continuously curved curves, the center of the convex polygonal ring is a central cavity, each outer corner of the convex polygonal ring has at least one extension bar extending outward, the protective cover is located outside all the extension bars, the protective cover as a whole covers all the extension bars, and the surfaces of the outer ends of the extension bars are connected to the inner wall of the protective cover; a cavity is formed between the protective cover and each body, a part of the transmission component is in the corresponding curved groove, and another part of the transmission component is outside the corresponding curved groove, the transmission component outside the curved groove is located in the corresponding cavity and does not contact the protective cover and extension bar forming the cavity; the transmission component is composed of a conductor and an insulating layer covering the conductor; or the transmission component is a structure having at least one optical fiber.

[0019] The present application describes a hollow cable with curved grooves. In the same cable, some transmission components may have conductors, while others may have optical fibers.

[0020] In the above-mentioned cable splicing device with curved groove, each outer corner of the convex polygonal ring has an outwardly extending extension strip, each extension strip extends along the outer edge direction that bisects the corner where the extension strip is located, and the cross section of the cavity is trapezoidal.

[0021] The present application has the following main beneficial technical effects: simple structure, easy manufacturing, higher construction efficiency, less damage to the protective cover and transmission components, and longer splicing length. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the top view of a section of the container used in this application.

[0023] Figure 2 This is a schematic diagram of the structure decomposed from the main viewing direction of Example 1 of the present application.

[0024] Figure 3 Schematic diagram of the cross-sectional structure of the container according to embodiment 2.

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of Example 2 after removing the transmission component. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand and implement this patent, the marks in the drawings are now explained in detail in conjunction with the drawings in the specification.

[0027] In the figure: 1—containing body, 2—transmission component, 3—protective cover, 10—central cavity, 11—first body, 12—second body, 13—third body, 14—fourth body, 111—first curved groove, 121—second curved groove, 131—third curved groove, 141—fourth curved groove, 31—limiting strip, 321—first fitting strip, 322—second fitting strip, 323—third fitting strip, 324—fourth fitting strip, 325—fifth fitting strip, 1A—first cavity, 1B—second cavity, 1C—third cavity, 1D—fourth cavity, 1111—first extension strip, 1112—second extension strip, 1211—third extension strip, 1212—fourth extension strip, 1311—fifth extension strip, 1312—sixth extension strip, 1411—seventh extension strip, 1412—eighth extension strip.

[0028] Implementation Example 1: See Figures 1 to 2 A hollow cable with a curved groove comprises a housing 1, a transmission component 2, and a protective cover 3. The transmission component 2 is composed of a conductor and an insulating layer covering the conductor.

[0029] The container 1 is composed of a first body 11, a second body 12, a third body 13, and a fourth body 14 that are arranged in parallel and in sequence and combined into one body. The first body 11 has a first curved groove 111, which extends and distributes in a plurality of continuously curved curve shapes along the length direction of the first body 11. The first curved groove 111 does not penetrate the lower surface of the first body 11; the second body 12 has a second curved groove 121, which extends and distributes in a plurality of continuously curved curve shapes along the length direction of the second body 12. The second curved groove 121 does not penetrate the lower surface of the second body 12. The third body 13 has a third curved groove 131, which extends and distributes in the shape of a plurality of continuously curved curves along the length direction of the third body 13. The third curved groove 131 does not penetrate the lower surface of the third body 13. The fourth body 14 has a fourth curved groove 141, which extends and distributes in the shape of a plurality of continuously curved curves along the length direction of the fourth body 14. The fourth curved groove 141 does not penetrate the lower surface of the fourth body 14. The upper surfaces of all the bodies are in the first plane, and the lower surfaces of all the bodies are in the second plane. The first plane is parallel to the second plane.

[0030] The protective cover 3 is composed of a limiting strip 31, a first bonding strip 321, a second bonding strip 322, a third bonding strip 323, a fourth bonding strip 324, and a fifth bonding strip 325. The protective cover 3 is an integrated structure. The first bonding strip 321 extends downward from the lower surface of the left end of the limiting strip 31, and the fifth bonding strip 325 extends downward from the lower surface of the right end of the limiting strip 31. The second bonding strip 322, the third bonding strip 323, and the fourth bonding strip 324 are arranged in sequence between the first bonding strip 321 and the fifth bonding strip 325. The second bonding strip 322, the third bonding strip 323, and the fourth bonding strip 324 all extend downward from the lower surface of the limiting strip 31. The lower surface of the first bonding strip 321 is aligned with the left end of the first body 11. The upper surfaces of the first body 11 are bonded together, the lower surface of the second bonding strip 322 is bonded to the upper surface of the right end of the first body 11, the lower surface of the third bonding strip 323 is bonded to the upper surface of the right end of the second body 12, the lower surface of the fourth bonding strip 324 is bonded to the upper surface of the right end of the third body 13, and the lower surface of the fifth bonding strip 325 is bonded to the upper surface of the right end of the fourth body 14. A first cavity 1A is formed between the first bonding strip 321 and the second bonding strip 322, a second cavity 1B is formed between the second bonding strip 322 and the third bonding strip 323, a third cavity 1C is formed between the third bonding strip 323 and the fourth bonding strip 324, and a fourth cavity 1D is formed between the fourth bonding strip 324 and the fifth bonding strip 325;

[0031] Each curved groove has a transmission component 2 extending along the curved groove, and the uppermost end of the transmission component 2 in each curved groove is above the first plane; the uppermost end of the transmission component 2 in each curved groove does not contact the lower surface of the limiting strip 31.

[0032] In this embodiment, the housing body 1 is not limited to being composed only of the first body 11, the second body 12, the third body 13, and the fourth body 14; it can also be composed of at least two bodies; correspondingly, the protective cover 3 is not limited to being composed of only five bonding strips, as long as it can cover all the housing bodies 1 from above as a whole, form a cavity between adjacent bonding strips, and ensure that the limiting strips can limit the transmission component 2 in the curved groove and there is sufficient clearance between the limiting strips and the upper surface of the transmission component 2.

[0033] A hollow cable with a curved groove comprises a housing, a transmission component, and a protective cover. The transmission component is composed of a conductor and an insulating layer covering the conductor.

[0034] The container is composed of at least two parallel, sequentially arranged, and integrated bodies. Each body has a curved groove extending along the length of the body. The curved groove is in the shape of multiple continuous curved segments. The curved groove does not pass through the lower surface of the body. The upper surfaces of all the bodies are within a first plane, and the lower surfaces of all the bodies are within a second plane. The first plane is parallel to the second plane.

[0035] The protective cover is composed of a limiting strip and at least three bonding strips. The protective cover is an integrated structure. All bonding strips extend downward from the lower surface of the limiting strip. The bonding strips are arranged in parallel on the lower surface of the protective cover. The bonding strips are perpendicular to the limiting strips. The leftmost bonding strip is located below the left end of the limiting strip, and the rightmost bonding strip is located below the right end of the limiting strip. A cavity is formed between adjacent bonding strips. The lower surface of the leftmost bonding strip is bonded to the upper surface of the left end of the leftmost body, the lower surface of the rightmost bonding strip is bonded to the upper surface of the right end of the rightmost body, and the middle bonding strips are respectively bonded to the upper surfaces of the adjacent adjacent parts of the corresponding adjacent bodies below.

[0036] Each curved groove has a transmission component extending along the curved groove, and the uppermost end of the transmission component in each curved groove is above the first plane; the uppermost end of the transmission component in each curved groove does not contact the lower surface of the limit bar.

[0037] The above-mentioned cable with curved groove has a shape of sine, cosine or any other easily implementable curved shape; the purpose of the curved groove is to make the length of the transmission component much longer than the length of the main body of the container.

[0038] In the above-mentioned hollow cable with a curved groove, part of the transmission component is inside the corresponding curved groove, and the other part of the transmission component is outside the corresponding curved groove. The transmission component outside the curved groove is located in the corresponding cavity and does not contact the limiting strip and the fitting strip forming the cavity.

[0039] Preferably, see Figure 1 In the above-mentioned cable with curved grooves, all the curved grooves are distributed in parallel. The parallel here means that the corresponding bending directions, curvatures, etc. are the same.

[0040] In this embodiment, the transmission component can also be a structure having at least one optical fiber. The so-called structure of at least one optical fiber can be, for example: a loose tube, which is composed of a tube body and at least one optical fiber located in a hole inside the tube body; it can also be a tight-buffered optical fiber, which is composed of an optical fiber and a coating tightly wrapped around the optical fiber; it can also be a butterfly unit, which is the butterfly unit described in the communications industry standard YD / T 1997 of the People's Republic of China or any butterfly unit disclosed in the prior art; it can also be a single-core or multi-core soft optical cable, and so on.

[0041] Of course, different transmission components can also be included in the same cable. For example, some transmission components have conductors inside, while some transmission components have optical fibers inside. This allows for simultaneous optical and electrical transmission, making it more suitable for use in smart grids.

[0042] In this application, a cable formed by a transmission component having optical fibers may also be referred to as a spliced ​​optical cable.

[0043] In the present application, during construction, a tool or the like is used to cut or tear the corresponding limit strip from directly above the cavity, so that the transmission component can be easily removed from the cavity. Since the transmission component is distributed in a curve, even if a shorter limit strip is cut, a longer transmission component can be removed, which is convenient for connection, reduces the stripping length and damage degree of the limit strip, and improves construction efficiency.

[0044] A method for manufacturing the above-mentioned trenched cable with a curved groove comprises the following steps:

[0045] The steps of manufacturing the transmission components are as follows: manufacturing a sufficient number of transmission components according to the manufacturing method of the prior art and keeping them in reserve;

[0046] Steps for manufacturing a container: use one of the following methods to manufacture the container. The first method is: forming the container by extrusion, setting a movable mold core and a fixed mold sleeve in the machine head, the mold sleeve covers the mold core, a long hole is opened on the top of the mold core, and a long hole is also opened on the top of the mold sleeve. A plurality of parallel slide bars with intervals between each other are installed above the extruder head. The upper ends of the slide bars are fixed on the spur gears, and the lower ends of the slide bars pass through the long hole above the sleeve and then pass through the long hole above the mold core. There is a gap between the lower end of the slide bar and the bottom surface of the mold sleeve; the extruder head extrude the plastic and pull it forward and stretch it through the cooling water tank with cooling water to form the initial body of the container, and continuously pull the initial body of the container forward; at the same time, the spur gears The direction of movement is perpendicular to the initial traction direction of the accommodating body. The spur gear is connected to a reciprocating motor installed outside the machine head. The reciprocating motor causes the spur gear to reciprocate by repeatedly rotating forward, stopping, reversing, and stopping, and causes the slide bar to form a curved groove on the main body. The manufacturing of the accommodating body according to the first method is completed. The second method is: using a sharp slide bar to scrape out a curved groove on a pre-formed main body with a rectangular cross section. Specifically, the slide bar is moved vertically relative to the main body within a certain range of travel directly above the main body. Both the slide bar and the main body are moving. A part of the lower end of the slide bar is inserted into the upper surface of the main body. The relative movement of the slide bar and the main body eventually forms a curved groove. The manufacturing of the accommodating body according to the second method is completed.

[0047] The step of placing the transmission component is as follows: taking the manufactured transmission component and placing it in the curved groove and fitting the transmission component with the curved groove so that a part of the transmission component is located outside the curved groove;

[0048] Steps for installing the protective cover: take a pre-made protective cover, apply glue on the lower surface of the fitting strip, press the protective cover downward so that the lower surface of the fitting strip contacts the upper surface of the container, and make the lower surface of the leftmost fitting strip of the protective cover bonded to the upper surface of the left end of the leftmost body of the container; make the lower surface of the rightmost fitting strip of the protective cover bonded to the upper surface of the right end of the rightmost body of the container; make the lower surface of the middle fitting strip of the protective cover bonded to the upper surface of the adjacent part of the corresponding adjacent body of the container; and complete the installation of the protective cover.

[0049] The above-mentioned method for manufacturing a spliced ​​cable with a curved groove, the steps of installing the protective cover can also be: take a pre-manufactured protective cover, make the lower surface of the leftmost fitting strip of the protective cover contact with the upper surface of the left end of the leftmost body of the container; make the lower surface of the rightmost fitting strip of the protective cover contact with the upper surface of the right end of the rightmost body of the container; make the lower surface of the middle fitting strip of the protective cover contact with the upper surface of the adjacent part of the corresponding adjacent body of the container; when the protective cover and the container are in contact, make the protective cover and the container pass through an ultrasonic welding device in a working state, so that the protective cover and the container are in the ultrasonic welding device for no less than 2 seconds; and the installation of the protective cover is completed.

[0050] In this method, since the ultrasonic welding device can quickly heat the suitable plastic but not for a very long time, it is not enough to melt the entire plastic, but rather to cause local deformation and softening, but in a bonded state. Since the materials of the protective cover and the container of this application are both plastic, they can be easily bonded by the ultrasonic welding device.

[0051] Keeping the protective cover and the container in the ultrasonic welding device for at least 2 seconds does not mean that the protective cover and the container stay in the ultrasonic welding device, but that they are continuously pulled. This is achieved by ensuring that the ultrasonic welding device has a sufficient length and a fast pulling speed.

[0052] Implementation Example 2: Please see Figures 3 and 4 , and refer to Figure 1 and Figure 2A cable splice with a curved groove, wherein the original shape of the container 1 is the same as that in the embodiment 1, and is formed by right-angle bending, and finally the bodies at both ends of the container 1 are bonded together to form a square cross-section, and a central cavity 10 is formed in the center of the container 1; thus, the first body 11, the second body 12, the third body 13, and the fourth body 14 respectively constitute a side wall of the square cylinder, and the first curved groove 111, the second curved groove 121, the third curved groove 131, and the fourth curved groove 141 are respectively located on the surface of the first body 11, the second body 12, the third body 13, and the fourth body 14; one end surface of the first body 11 has a first extension strip 1111 extending vertically outward, and the first body 11 The other end surface of the second body 12 has a second extension strip 1112 extending vertically outward, the one end surface of the second body 12 has a third extension strip 1211 extending vertically outward, the other end surface of the second body 12 has a fourth extension strip 1212 extending vertically outward, the one end surface of the third body 13 has a fifth extension strip 1311 extending vertically outward, the other end surface of the third body 13 has a sixth extension strip 1312 extending vertically outward, the one end surface of the fourth body 14 has a seventh extension strip 1411 extending vertically outward, the other end surface of the fourth body 14 has an eighth extension strip 1412 extending vertically outward, all the extension strips are of equal length, the first extension strip 1111 and the The second extension bar 1112 is parallel and of equal length, the third extension bar 1211 is parallel to the fourth extension bar 1212 and of equal length, the fifth extension bar 1311 is parallel to the sixth extension bar 1312 and of equal length, the seventh extension bar 1411 is parallel to the eighth extension bar 1412 and of equal length, the second extension bar 1112 is parallel to the fifth extension bar 1311, the third extension bar 1211 is parallel to the seventh extension bar 1411, the second extension bar 1112 is perpendicular to the third extension bar 1211, the other end of the first body 11 is connected to one end of the second body 12, the other end of the second body 12 is connected to one end of the third body 13, and the other end of the third body 13 is connected to one end of the fourth body 14. The other end of the fourth body 14 is connected to one end of the first body 11; the protective cover 3 is located outside all the extension strips, and the protective cover 3 as a whole covers all the extension strips, and the surfaces of the outer ends of the extension strips are connected to the inner walls of the protective cover 3; a first cavity 1A is formed between the protective cover 3 and the first body 11, a second cavity 1B is formed between the protective cover 3 and the second body 12, a third cavity 1C is formed between the protective cover 3 and the third body 13, and a fourth cavity 1D is formed between the protective cover 3 and the fourth body 14; a part of the transmission component 2 is in the corresponding curved groove, and the other part of the transmission component is outside the corresponding curved groove. The transmission component outside the curved groove is located in the corresponding cavity and does not contact the protective cover and extension strip that form the cavity.

[0053] Furthermore, in the above-mentioned cable with a curved groove, the cross-section of the accommodating body can also be other convex polygonal rings, preferably regular polygonal rings, each side of the regular polygonal ring is a main body, the main body has a curved groove, the center of the regular polygonal ring is a central cavity, each outer corner of the regular polygonal ring has at least one extension strip extending outward, the protective cover is located outside all the extension strips, the protective cover as a whole covers all the extension strips, the surfaces of the outer ends of the extension strips are connected to the inner wall of the protective cover; a cavity is formed between the protective cover and each main body, a part of the transmission component is in the corresponding curved groove, and the other part of the transmission component is outside the corresponding curved groove, the transmission component outside the curved groove is located in the corresponding cavity and does not contact the protective cover and extension strip that form the cavity.

[0054] In this embodiment, there is at least one extension bar extending outward, which can be one, or two as in the above-mentioned specific embodiment, or more. When there are more, the support is more stable and reliable. When there are more, the preferred method is to extend along the outer edge direction of the angle where the extension bar is located. This structure expands the width of the cavity and makes the cavity trapezoidal. In this way, the curved groove will not touch the extension bar forming the cavity when the width is larger, that is, the length of the curved groove in the main body within the same length can be longer, the length of the transmission component inside can be longer, and the length that can be connected can be longer.

[0055] The present application discloses a hollow cable with a curved groove, wherein the entire body is made of plastic.

[0056] In the present application, the material of the positioning strip of the hollow cable with a curved groove is plastic.

[0057] In the trenching cable with curved grooves described in this application, all extension strips are made of plastic.

[0058] In the present application, the protective sheath 3 of the hollow cable with curved groove is made of plastic, preferably cross-linked polyethylene insulation material.

[0059] The present application discloses a hollow cable with a curved groove, wherein the conductor is made of aluminum alloy or copper.

[0060] The present application discloses a hollow cable with a curved groove, wherein the insulating layer is made of plastic.

[0061] The present application discloses a spliced ​​cable with a curved groove, wherein the optical fiber is a single-mode or multi-mode optical fiber.

[0062] The present application discloses a spliced ​​cable with a curved groove, wherein the optical fiber is a plastic optical fiber or a quartz glass optical fiber.

[0063] In the present application, the internal transmission components can be distinguished by the size, color, markings, etc. of the main body, and the internal transmission components can also be distinguished by the markings or colors on the protective cover. This does not require creative labor and is easy to implement under the guidance of existing technology, so it is not an invention point of the present application.

[0064] In the present application, the length of the curved groove is increased, so that the length of the transmission component stored in the unit length of the body is longer. Therefore, after cutting the protective cover, the transmission component can be easily taken out, and a sufficiently long transmission component can be taken out, which reduces the damage to the cable during construction. That is, when taking a transmission component of the same length, a shorter protective cover can be peeled off. In addition, after peeling off the protective cover, the part near the cut can also be taken out, which also increases the length accordingly, so the construction efficiency is higher. Moreover, since there is a large gap between the protective cover and the body, the transmission component is not easily damaged when planing is used. Planing refers to the method similar to using a planer to plane the skin of a loofah or cucumber.

[0065] The present application has the following main beneficial technical effects: simple structure, easy manufacturing, higher construction efficiency, less damage to the protective cover and transmission components, and longer splicing length.

[0066] The cable in this application can have an aluminum alloy conductor, so it can be called an aluminum alloy power cable. Due to the effective electrical isolation of the main body in the container, it can transmit very high power levels, so it can also be called a high-voltage or ultra-high-voltage cable. The cable in this application can be used in smart grids, and the material of the container and / or protective sheath can be cross-linked polyethylene insulation material, so it can also be called a cross-linked polyethylene insulated power cable.

[0067] When the optical fiber is present in this application, it can be used as an intelligent sensor or intelligent sensing element; since it can transmit voice and images, it can also be used as a physical sensor, such as a voice sensor or image sensor; since it transmits optical signals through the principle of total reflection, it can also be used as a distance sensor; the optical fiber in this application itself is an optical waveguide, so it can be used as an optical waveguide, such as an array optical waveguide or a diffraction optical waveguide; this application can also be used in the field of optical computing, as part of optical computing, optical computing, and optical network computing, and as part of optical chip computing.

[0068] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions described in the claims, including equivalent alternatives to the technical features of the technical solutions described in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A cable with a curved groove, comprising a housing, a transmission component, and a protective cover; characterized in that: The container is composed of at least two bodies that are parallel, arranged in sequence and combined into one. Each body has a curved groove extending along the length direction of the body. The curved groove is in the shape of multiple continuously curved curves. The curved groove does not pass through the lower surface of the body. The upper surfaces of all the bodies are in the first plane, and the lower surfaces of all the bodies are in the second plane. The first plane is parallel to the second plane; the protective cover is composed of a limiting strip and at least three fitting strips. The protective cover is an integrated structure. All the fitting strips extend downward from the lower surface of the limiting strip. The fitting strips are arranged in parallel on the lower surface of the protective cover. The fitting strips are perpendicular to the limiting strips. The leftmost fitting strip is located below the left end of the limiting strip, and the rightmost fitting strip is located below the left end of the limiting strip. Below the right end of the limiting strip, a cavity is formed between adjacent bonding strips, the lower surface of the leftmost bonding strip is bonded to the upper surface of the left end of the leftmost body, the lower surface of the rightmost bonding strip is bonded to the upper surface of the right end of the rightmost body, and the middle bonding strips are respectively bonded to the upper surfaces of the adjacent parts of the corresponding adjacent bodies below; each curved groove has a transmission component extending and distributed along the curved groove, and the uppermost end of the transmission component in each curved groove is above the first plane; the uppermost end of the transmission component in each curved groove does not contact the lower surface of the limiting strip; the transmission component is composed of a conductor and an insulating layer covering the conductor, or the transmission component is a structure having at least one optical fiber.

2. A cable with curved groove according to claim 1, characterized in that: The shape of the curved groove is sine or cosine.

3. A cable with curved groove according to claim 2, characterized in that: All the curved grooves are distributed in parallel.

4. A hollow cable with a curved groove according to claim 3, characterized in that: Part of the transmission component is in the corresponding curved groove, and the other part of the transmission component is outside the corresponding curved groove. The transmission component outside the curved groove is located in the corresponding cavity and does not contact the limiting strip and the fitting strip forming the cavity.

5. A method for manufacturing a hollow cable with a curved groove according to any one of claims 1 to 4, characterized in that: The following steps are involved: The steps of manufacturing the transmission components are as follows: manufacturing a sufficient number of transmission components according to the manufacturing method of the prior art and keeping them in reserve; Steps for manufacturing a container: use one of the following methods to manufacture the container. The first method is: forming the container by extrusion, setting a movable mold core and a fixed mold sleeve in the machine head, the mold sleeve covers the mold core, a long hole is opened on the top of the mold core, and a long hole is also opened on the top of the mold sleeve. A plurality of parallel slide bars with intervals between each other are installed above the extruder head. The upper ends of the slide bars are fixed on the spur gears, and the lower ends of the slide bars pass through the long hole above the sleeve and then pass through the long hole above the mold core. There is a gap between the lower end of the slide bar and the bottom surface of the mold sleeve; the extruder head extrude the plastic and pull it forward and stretch it through the cooling water tank with cooling water to form the initial body of the container, and continuously pull the initial body of the container forward; at the same time, the spur gears The direction of movement is perpendicular to the initial traction direction of the accommodating body. The spur gear is connected to a reciprocating motor installed outside the machine head. The reciprocating motor causes the spur gear to reciprocate by repeatedly rotating forward, stopping, reversing, and stopping, and causes the slide bar to form a curved groove on the main body. The manufacturing of the accommodating body according to the first method is completed. The second method is: using a sharp slide bar to scrape out a curved groove on a pre-formed main body with a rectangular cross section. Specifically, the slide bar is moved vertically relative to the main body within a certain range of travel directly above the main body. Both the slide bar and the main body are moving. A part of the lower end of the slide bar is inserted into the upper surface of the main body. The relative movement of the slide bar and the main body eventually forms a curved groove. The manufacturing of the accommodating body according to the second method is completed. The step of placing the transmission component is as follows: taking the manufactured transmission component and placing it in the curved groove and fitting the transmission component with the curved groove so that a part of the transmission component is located outside the curved groove; Steps for installing the protective cover: take a pre-made protective cover, apply glue on the lower surface of the fitting strip, press the protective cover downward so that the lower surface of the fitting strip contacts the upper surface of the container, and make the lower surface of the leftmost fitting strip of the protective cover bonded to the upper surface of the left end of the leftmost body of the container; make the lower surface of the rightmost fitting strip of the protective cover bonded to the upper surface of the right end of the rightmost body of the container; make the lower surface of the middle fitting strip of the protective cover bonded to the upper surface of the adjacent part of the corresponding adjacent body of the container; and complete the installation of the protective cover.

6. A method for manufacturing a hollow cable with a curved groove according to claim 5, characterized in that: The steps for installing the protective cover are as follows: take a pre-made protective cover, make the lower surface of the leftmost bonding strip of the protective cover contact with the upper surface of the left end of the leftmost body of the container; make the lower surface of the rightmost bonding strip of the protective cover contact with the upper surface of the right end of the rightmost body of the container; make the lower surface of the middle bonding strip of the protective cover contact with the upper surface of the adjacent part of the corresponding adjacent body of the container; when the protective cover and the container are in contact, make the protective cover and the container pass through the ultrasonic welding device in the working state, so that the protective cover and the container are in the ultrasonic welding device for no less than 2 seconds; and the installation of the protective cover is completed.

7. A cable with a curved groove, characterized in that: The cross-section of the container is a convex polygonal ring, each side of the convex polygonal ring is a main body, and the main body is provided with a curved groove, which does not penetrate the inner surface of the main body, and is in the shape of multiple continuously curved curves. The center of the convex polygonal ring is a central cavity, and each outer corner of the convex polygonal ring has at least one extension bar extending outward, and the protective cover is located outside all the extension bars, and the protective cover as a whole covers all the extension bars, and the surfaces of the outer ends of the extension bars are connected to the inner wall of the protective cover; a cavity is formed between the protective cover and each main body, a part of the transmission component is in the corresponding curved groove, and the other part of the transmission component is outside the corresponding curved groove, and the transmission component outside the curved groove is located in the corresponding cavity and does not contact the protective cover and the extension bar forming the cavity; the transmission component is composed of a conductor and an insulating layer covering the conductor; or, the transmission component is a structure having at least one optical fiber.

8. The cable with curved groove according to claim 7, characterized in that: Each outer corner of the convex polygonal ring is provided with an outwardly extending extension bar, each extension bar extends along the outer edge direction bisecting the corner where the extension bar is located, and the cross section of the cavity is trapezoidal.

9. A hollow cable with a curved groove according to claim 1 or claim 8, characterized in that: The conductor material is aluminum alloy or copper.

10. A hollow cable with a curved groove according to claim 1 or claim 8, characterized in that: The material of the protective sleeve is cross-linked polyethylene insulating plastic.

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