Cable bending limiting protection device

Abstract

The utility model relates to the technical field of cable bending limiting protection, in particular to a cable bending limiting protection device. The utility model provides a cable bending limiting protection device which comprises a flange assembly and a connecting assembly, and the flange assembly and the connecting assembly are each provided with a first through hole for a cable to penetrate through. The connecting assembly comprises a plurality of connecting pieces which are connected in sequence, and the flange assemblies are connected to the two ends of the connecting assembly. At least one end of the connecting assembly is provided with an elastic clasping piece, the elastic clasping piece is connected between the connecting piece and the flange assembly, and the elastic clasping piece is used for clasping a cable; wherein the plurality of connecting pieces are movably connected, and the flange assembly and the connecting assembly are movably connected, so that the cable bending limiting protection device has a bending space. The cable bending limiting protection device provided by the utility model is simple in structure, can protect the cable in all directions, and can prevent the connecting piece from being broken when the cable is hung.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable bending protection, and particularly relates to a cable bending protection device. BACKGROUND

[0002] With the growth of national power demand, outdoor cable construction projects are increasing, and cables need to bear various stress states under complex terrain and construction conditions. For example, the cable may be bent or twisted at multiple positions due to terrain undulations or construction operations, or even in a vertically inverted state due to the weight of the lower connecting piece and the transmission of the additional load to the upper connecting piece due to gravity. In addition, cables need to cope with dynamic loads, environmental corrosion and mechanical damage during long-term operation, which puts higher requirements on the installation efficiency, mechanical properties and adaptability of the bending limiting device.

[0003] In the related art, the bending limiting device has multiple bending limiters, and the multiple bending limiters are connected in series with each other and are matched with each other through multiple components such as a pipe clamp, a bolt, a fixing seat, a brake lever, a connecting rod, a movable bin, a spring, a pull rod, an insertion block, a fixing column and an insertion slot, so as to limit the bending degree of the cable along each direction.

[0004] However, the existing bending limiting device has a complex structure, and the top connecting piece is prone to overload fracture when the cable is vertically inverted. CONTENT OF THE INVENTION

[0005] The present application provides a cable bending protection device to solve the technical problem of the existing bending limiting device having a complex structure and the top connecting piece being prone to overload fracture when the cable is vertically inverted.

[0006] The present application provides a cable bending protection device, which comprises a flange assembly and a connecting assembly, and the flange assembly and the connecting assembly are both provided with a first through hole for passing through a cable; the connecting assembly comprises multiple connecting pieces, the multiple connecting pieces are connected in sequence, and the flange assembly is connected to both ends of the connecting assembly; at least one end of the connecting assembly is provided with an elastic holding piece, the elastic holding piece is connected between the connecting piece and the flange assembly, and the elastic holding piece is used for holding the cable; wherein the multiple connecting pieces, the flange assembly and the connecting assembly are movably connected, so that the cable bending protection device has a bending space.

[0007] The application provides a cable bending limiting protection device, which protects the cable through a flange assembly and a plurality of connecting pieces in movable connection, and has a simple overall structure. The flange assembly, the plurality of connecting pieces and the plurality of connecting pieces in movable connection enable the cable to bend in a certain space and ensure that the cable does not break due to excessive bending. In addition, an elastic holding piece is arranged between the connecting piece and the flange assembly to hold the cable, so that the cable itself can bear a part of the gravity when the cable is hung, thereby preventing the top of the cable bending limiting protection device from being broken due to excessive stress.

[0008] As an optional embodiment, the connecting assembly comprises a plurality of first connecting pieces, a plurality of second connecting pieces and a third connecting piece. The plurality of first connecting pieces and the plurality of second connecting pieces are alternately connected to form a chain structure. At least one end of the chain structure is connected to the third connecting piece.

[0009] In this way, the plurality of first connecting pieces and the plurality of second connecting pieces are alternately connected to form a chain structure, so that the cable of any length can be protected from bending.

[0010] As an optional embodiment, the first connecting piece has two first connecting cavities with opposite opening directions. The second connecting piece has a first connecting part at each end in the length direction. Any first connecting part of the second connecting piece can be inserted into any first connecting cavity of the first connecting piece to connect the first connecting piece and the second connecting piece.

[0011] In this way, the first connecting part and the first connecting cavity are connected to alternately connect the plurality of first connecting pieces and the plurality of second connecting pieces to form a chain structure of any length.

[0012] As an optional embodiment, at least one end of the chain structure is a second connecting piece. The third connecting piece has a second connecting cavity for inserting the first connecting part to connect the second connecting piece and the third connecting piece. The third connecting piece has a recess for mounting the elastic holding piece.

[0013] In this way, the elastic holding piece is arranged at at least one end of the chain structure to prevent the cable from sliding.

[0014] As an optional embodiment, one end of the chain structure is a first connecting piece, and the other end is connected to a third connecting piece.

[0015] The flange assembly comprises a first flange and a second flange. The first flange has a second connecting part for inserting into the first connecting cavity to connect the first flange and the first connecting piece. The second flange is connected to the third connecting piece on the side away from the second connecting cavity.

[0016] In this way, the cable bending protection device can be fixed through the first flange and the second flange.

[0017] As an optional implementation, the elastic holding member is arranged between the third connecting member and the second flange; the elastic holding member has a second through hole, the diameter of the second through hole is smaller than the diameter of the first through hole, and the second through hole is used for holding the cable to prevent the cable from sliding in the axial direction.

[0018] In this way, the cable can be held through the second through hole to prevent the cable from sliding in the axial direction.

[0019] As an optional implementation, the cavity wall of the first connecting cavity and the cavity wall of the second connecting cavity are each provided with a plurality of counterbores; the connecting assembly further includes a connecting bolt, the connecting bolt is threadedly connected with the counterbores, and the connecting bolt at least partially penetrates the counterbores and extends into the first connecting cavity or the second connecting cavity to position the first connecting part or the second connecting part.

[0020] In this way, the first connecting part or the second connecting part can be positioned through the connecting bolt to prevent the components from being separated from each other.

[0021] As an optional implementation, the first connecting part and the second connecting part are each in a cylindrical structure, the diameters of the first connecting part and the second connecting part are equal, the inner diameters of the first connecting cavity and the second connecting cavity are equal, and the diameters of the first connecting part and the second connecting part are smaller than the inner diameters of the first connecting cavity and the second connecting cavity.

[0022] In this way, the first connecting part or the second connecting part has a reversible space in the first connecting cavity or the second connecting cavity.

[0023] As an optional implementation, when the first connecting member is connected with the first flange or the second connecting member, the first connecting part or the second connecting part has a spacing from the bottom wall of the first connecting cavity; when the second connecting member is connected with the third connecting member, the first connecting part has a spacing from the second connecting cavity.

[0024] In this way, when the first connecting part or the second connecting part is reversed in the first connecting cavity or the second connecting cavity, the bottom wall of the first connecting cavity or the second connecting cavity will not block the first connecting part or the second connecting part.

[0025] As an optional implementation, the opening of the first through hole is rounded to protect the cable.

[0026] In this way, the opening of the first through hole can be prevented from causing abrasion to the cable.

[0027] The cable bending protection device provided by the application comprises a flange assembly and a connecting assembly, and the flange assembly and the connecting assembly are both provided with a first through hole for passing through a cable; the connecting assembly comprises a plurality of connecting pieces which are connected in sequence, and the flange assembly is connected to two ends of the connecting assembly; at least one end of the connecting assembly is provided with an elastic holding piece which is connected between the connecting piece and the flange assembly, and the elastic holding piece is used for holding the cable; wherein the plurality of connecting pieces and the flange assembly and the connecting assembly are movably connected, so that the cable bending protection device has a bending space. The cable bending protection device provided by the application has a simple structure, can protect the cable in all directions, and can prevent the connecting piece from being broken when the cable is hung.

[0028] In addition to the technical problems solved by the embodiments of the application described above, the technical features constituting the technical solutions and the beneficial effects brought by these technical features, the other technical problems solved by the cable bending protection device provided by the application, the other technical features included in the technical solutions and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0030] Figure 1 The structural schematic diagram of the cable bending protection device provided by the embodiments of the application is shown in the figure;

[0031] Figure 2 The structural schematic diagram of the first flange provided by the embodiments of the application is shown in the figure;

[0032] Figure 3 The structural schematic diagram of the first connecting piece provided by the embodiments of the application is shown in the figure;

[0033] Figure 4 The structural schematic diagram of the second connecting piece provided by the embodiments of the application is shown in the figure;

[0034] Figure 5 The structural schematic diagram of the third connecting piece provided by the embodiments of the application is shown in the figure;

[0035] Figure 6 The structural schematic diagram of the elastic holding piece provided by the embodiments of the application is shown in the figure;

[0036] Figure 7 The structural schematic diagram of the second flange provided by the embodiments of the application is shown in the figure;

[0037] Figure 8 A structure schematic diagram of the connecting bolt provided by the embodiment of the present application is shown in the figure;

[0038] Figure 9 A structure schematic diagram of the fixing bolt provided by the embodiment of the present application is shown in the figure;

[0039] Figure 10 A cross-sectional view of the cable bending limiting protection device provided by the embodiment of the present application is shown in the figure;

[0040] Figure 11 A cross-sectional view of the first end of the cable bending limiting protection device provided by the embodiment of the present application is shown in the figure;

[0041] Figure 12 A cross-sectional view of the second end of the cable bending limiting protection device provided by the embodiment of the present application is shown in the figure;

[0042] Figure 13 A transparent view of the cable bending limiting protection device provided by the embodiment of the present application is shown in the figure.

[0043] Explanation of reference signs:

[0044] 10 - cable bending limiting protection device; 101 - first through hole; 102 - second through hole;

[0045] 100 - flange assembly; 110 - first flange; 111 - second connecting part; 120 - second flange; 121 - protruding part;

[0046] 200 - connecting assembly; 210 - first connecting piece; 211 - first connecting cavity; 220 - second connecting piece; 221 - first connecting part; 230 - third connecting piece; 231 - second connecting cavity; 232 - recessed part; 240 - elastic holding piece; 250 - counterbore; 260 - groove; 270 - connecting bolt; 280 - fixing bolt. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0048] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate. For example, without departing from the scope of this document, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0049] Depending on the context, the word "if" as used here can be interpreted as "when," "when," or "in response to determination."

[0050] Furthermore, as used herein, the singular forms “a,” “one,” and “the” are intended to also include the plural forms, unless the context indicates otherwise.

[0051] Furthermore, as used in this article, “multiple” refers to “at least two” unless the context indicates otherwise.

[0052] It should be further understood that the terms “comprising” or “including” indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups.

[0053] The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Therefore, “A, B, and / or C” means “any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition occur only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0054] With the growth of national electricity demand, outdoor cable construction projects are increasing, and cables need to withstand various stress states under complex terrain and construction conditions. For example, cables may experience bending or torsional stress in multiple parts due to terrain undulations or construction operations, and even when hanging vertically upside down, gravity can transfer the self-weight and additional load of the lower connectors to the upper connectors. In addition, cables need to cope with challenges such as dynamic loads, environmental corrosion, and mechanical damage during long-term operation, which places higher demands on the installation efficiency, mechanical performance, and adaptability of bending limiting devices.

[0055] In related technologies, bending limiting devices have multiple bending limiters connected in series. These limiters work together through various components such as pipe clamps, bolts, fixing seats, brake rods, connecting rods, movable chambers, springs, pull rods, inserts, fixing columns, and slots to limit the degree of cable bending in all directions. However, existing bending limiting devices are complex in structure, heavy, and prone to overload and breakage of the upper connecting parts when the cable is hung vertically upside down.

[0056] To address the aforementioned technical problems, this application provides a cable bending limit protection device. This device protects the cable through a movable flange assembly and multiple connectors. The overall structure is relatively simple. The flange assembly and the multiple connectors, as well as the connectors themselves, are all movable, allowing the cable to bend within a certain space while ensuring that the bending degree is not excessive and causes breakage. Furthermore, an elastic clamping element is provided between the connectors and the flange assembly to clamp the cable. When the cable is suspended, the cable itself can bear the force, thereby distributing some of the weight and preventing the top connector of the cable bending limit protection device from breaking due to excessive force.

[0057] Figure 1 This is a schematic diagram of the cable bending protection device provided in the embodiments of this application; Figure 2 A schematic diagram of the structure of the first flange provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the first connector provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the second connector provided in an embodiment of this application; Figure 5 A schematic diagram of the structure of the third connector provided in the embodiments of this application; Figure 6 This is a schematic diagram of the structure of the elastic clamping member provided in the embodiments of this application; Figure 7 A schematic diagram of the structure of the second flange provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of the connecting bolt provided in an embodiment of this application; Figure 9 This is a schematic diagram of the structure of the fixing bolt provided in the embodiment of this application; Figure 10 A cross-sectional view of the cable bending protection device provided in the embodiments of this application; Figure 11 A cross-sectional view of the first end of the cable bending protection device provided in an embodiment of this application; Figure 12 A cross-sectional view of the second end of the cable bending protection device provided in an embodiment of this application; Figure 13 A transparent view of the cable bending protection device provided in the embodiments of this application.

[0058] Reference Figures 1 to 13As shown, this application provides a cable bending limit protection device 10, including a flange assembly 100 and a connecting assembly 200. Both the flange assembly 100 and the connecting assembly 200 are provided with a first through hole 101 for the cable to pass through. The connecting assembly 200 includes a plurality of connectors connected in sequence. The flange assembly 100 is connected to both ends of the connecting assembly 200. At least one end of the connecting assembly 200 is provided with an elastic clamping member 240, which is connected between the connectors and the flange assembly 100 and is used to clamp the cable. The plurality of connectors are movably connected to each other, and the flange assembly 100 and the connecting assembly 200 are movably connected to each other, so that the cable bending limit protection device 10 has bending space.

[0059] It is understandable that a cable bending protection device 10 can be installed at cable bends or suspension sections to protect the cable. A first through-hole 101 is located at the center of the flange assembly 100 and the connectors. The first through-hole 101 can be cylindrical. During installation, the flange assembly 100 and multiple connectors are connected sequentially, so that multiple first through-holes 101 form a channel for the cable to pass through. The outer walls of the flange assembly 100 and the multiple connectors can protect the cable. Multiple connectors and the flange assembly 100 and the connecting assembly 200 can be movably connected, allowing adjacent first through-holes 101 to rotate at a certain angle. Thus, the cable bending protection device 10 as a whole has a certain bending space, facilitating cable bending for convenient construction, while ensuring that the cable bending degree is not excessive and causes breakage.

[0060] The elastic clamping member 240 can fix the cable and prevent the cable from sliding relative to the cable bending limit protection device 10 along the axial direction. In this way, when the cable section protected by the cable bending limit protection device 10 is suspended, the cable itself can bear part of the gravity load, thereby reducing the tensile force borne by the top connector and flange of the cable bending limit protection device 10 and preventing the cable bending limit protection device 10 from breaking at the top position.

[0061] The flange assembly 100 and the connector can be made of metal materials, such as Q235 carbon structural steel, and are treated with epoxy paint for aesthetics and scratch resistance. They have good comprehensive mechanical properties and are resistant to tension, shear, and bending torsion. The elastic clamping component 240 can be made of tire rubber, which has excellent clamping performance.

[0062] As one possible implementation, the connecting component 200 includes a plurality of first connectors 210, a plurality of second connectors 220 and a third connector 230, with the plurality of first connectors 210 and the plurality of second connectors 220 alternately connected to form a chain structure; the third connector 230 is connected to the end of the chain structure.

[0063] It is understood that the chain structure is mainly formed by alternating connections of the first connector 210 and the second connector 220, and the number of the first connector 210 and the second connector 220 can be determined according to the length of the cable to be protected. The third connector 230 is connected to the end of the chain structure and is used to cooperate with the flange assembly 100 to fix the elastic clamping member 240.

[0064] Reference Figure 3 and Figure 4 , combined Figure 11 As one possible implementation, the first connector 210 has two first connecting cavities 211 with opposite opening directions. The second connector 220 has a first connecting portion 221 at each end along its length. Any first connecting portion 221 of the second connector 220 can be inserted into any first connecting cavity 211 of the first connector 210 to connect the first connector 210 and the second connector 220.

[0065] It should be noted that the first connector 210 is cylindrical, with a partition in the middle dividing the central cavity of the cylinder into a first connecting cavity 211 and a second connecting cavity 231. A first through hole 101 is provided in the middle of the partition to allow cable passage. The second connector 220 is irregularly shaped, with a large cylinder in the middle of its length direction. Along the length of the second connector 220, two first connecting portions 221 are connected to both sides of the large cylinder. The first connecting portions 221 are small cylinders, coaxially arranged with the large cylinder, and a groove 260 is provided between the small and large cylinders. The first through hole 101 of the second connector 220 is coaxially arranged with the small and large cylinders.

[0066] Reference Figure 5 , combined Figure 12 As one possible implementation, at least one end of the chain structure is a second connector 220; the third connector 230 has a second connecting cavity 231, which is used to insert the first connecting part 221 so that the second connector 220 is connected to the third connector 230.

[0067] It should be noted that the third connector 230 is a cylindrical structure. The first end of the third connector 230 has a partition. One side of the partition and the inner wall of the cylinder form a second connecting cavity 231. The partition forms the bottom wall of the second connecting cavity 231 on the side that forms the second connecting cavity 231. The other side of the partition has a recess 232, which is used to install the elastic clamping member 240.

[0068] In some embodiments, if the cable to be protected is long, both ends of the chain structure can be second connectors 220, and two third connectors 230 are respectively connected to the two second connectors 220 at both ends of the chain structure. In this case, an elastic clamping member 240 can be installed on each of the two third connectors 230 to strengthen the limiting of the cable.

[0069] Reference Figure 2 and Figure 7 In some embodiments, one end of the chain structure is a first connector 210, and the other end is connected to a third connector 230; the flange assembly 100 includes a first flange 110 and a second flange 120. The first flange 110 has a second connecting portion 111, which is used to be inserted into the first connecting cavity 211 so that the first flange 110 is connected to the first connector 210; the second flange 120 is connected to the side of the third connector 230 away from the second connecting cavity 231.

[0070] It should be noted that the first flange 110 has a large cylindrical structure and a small cylindrical structure. The small cylindrical structure extends along the length of the first flange 110 to form a second connecting part 111. The large cylindrical structure and the small cylindrical structure are coaxially connected, and there is a groove 260 between the large cylindrical structure and the small cylindrical structure. The large cylindrical structure of the first flange 110 has 6 flange holes, and the first flange 110 is fastened to the cable mounting base by 6 bolts.

[0071] Reference Figure 12 The second flange 120 is connected to the side of the third connector 230 away from the second connecting cavity 231. The side of the third connector 230 away from the second connecting cavity 231 has a recess 232. The second flange 120 has a protrusion 121. The recess 232 is used to place the elastic clamping member 240. The elastic clamping member 240 has a second through hole 102. The second through hole 102 can pass through the cable. The diameter of the second through hole 102 is smaller than the diameter of the first through hole 101. During installation, the protrusion 121 of the second flange 120 abuts against the elastic clamping member 240, and the second flange 120 is fixed to the third connector 230 by fixing bolts 280. There can be 3 fixing bolts. After tightening the fixing bolts, the protrusion 121 squeezes the elastic clamping member 240, which further reduces the size of the second through hole 102, so that the second through hole 102 makes interference contact with the cable, and the cable is clamped by the elastic clamping member 240.

[0072] It should be noted that the cavity walls of the first connecting cavity 211 and the second connecting cavity 231 are provided with multiple countersunk holes 250; the connecting assembly 200 also includes a connecting bolt 270, which is threadedly connected to the countersunk hole 250, and the connecting bolt 270 at least partially penetrates the countersunk hole 250 and extends into the first connecting cavity 211 or the second connecting cavity 231 to limit the first connecting part 221 or the second connecting part 111.

[0073] For example, the cavity walls of the first connecting cavity 211 and the second connecting cavity 231 are each provided with three countersunk holes 250. The three countersunk holes 250 are spaced apart around the circumference of the cavity wall of the first connecting cavity 211 or the cavity wall of the second connecting cavity 231, and penetrate through the cavity walls of the first connecting cavity 211 and the cavity walls of the second connecting cavity 231. In addition, the countersunk holes 250 are inclined and form an angle with the axial direction of the first connecting member 210 or the axial direction of the third connecting member 230, and the angle can be 30°-60°.

[0074] It should be noted that the inlet section of the countersunk hole 250 is a smooth cylindrical through hole, the outlet section is a threaded hole, the upper part of the connecting bolt 270 is a threaded shank, the middle part is a threaded part, the thread of this part is adapted to the thread of the outlet section of the countersunk hole 250, and the lower part of the connecting bolt 270 is a smooth cylinder with an outer diameter slightly smaller than the outer diameter of the middle thread.

[0075] During installation, while connecting each component, screw the connecting bolts 270 into the corresponding countersunk holes 250 and tighten them until they are in place. At this time, the first connecting part 221 is inserted into the first connecting cavity 211, and the connecting bolts 270 are engaged in the grooves 260 of the second connecting member 220. At both ends of the chain structure, the second connecting part 111 of the first flange 110 is inserted into the first connecting cavity 211 of the first connecting member 210, and the connecting bolts 270 are engaged in the grooves 260 of the first flange 110. The first connecting part 221 of the second connecting member 220 is inserted into the second connecting cavity 231 of the third connecting member 230, and the connecting bolts 270 are engaged in the grooves 260 of the second connecting member 220. At the same time, the second flange 120 is connected to the third connecting member 230 by the fixing bolts 280 and presses the elastic clamping member 240. In this way, the installation of the cable bending limit device is completed.

[0076] It should be noted that the openings of each first connecting cavity 211 are rounded. During installation, simply align the opening of the first connecting cavity 211 with the large cylinder of the first flange 110, or align the opening of the first connecting cavity 211 with the large cylinder of the second connecting member 220, and then screw the connecting bolt 270 into the countersunk hole 250 to complete the connection between the first connecting member 210 and the first flange 110, or the connection between the first connecting member 210 and the second connecting member 220. When bending the cable, the rounded corners can reduce the number of first connecting cavities. The opening of 211 is not subject to friction or collision with the large cylinder of the first flange 110 or the large cylinder of the second connector 220; the opening of the second connecting cavity 231 is rounded. During installation, the opening of the second connecting cavity 231 is brought into contact with the large cylinder of the second connector 220, and then the connecting bolt 270 is screwed into the countersunk hole 250 to complete the connection between the first connector 210 and the second connector 220. When the cable is bent, the rounded corner can reduce the friction or collision between the opening of the second connecting cavity 231 and the large cylinder of the second connector 220.

[0077] In some embodiments, the angle between the countersunk hole 250 and the axial direction of the first connector 210 or the third connector 230 can be 60°. After the connecting bolt 270 is screwed in, the connecting bolt 270 forms a 60° angle with the axial direction of the first connector 210 or the third connector 230. In this way, the advantages of combined force can be fully utilized, while minimizing the shear and tensile forces borne by the connecting bolt 270. This allows the connecting bolt 270 to perform optimally in terms of mechanical properties, effectively overcoming the damage to the connector caused by the traditional bending limiter connection being subjected to shear or tensile forces alone.

[0078] It should be noted that the connecting bolt 270 and the fixing bolt 280 can be made of metal, such as 23750 material.

[0079] It should be noted that both the first connecting part 221 and the second connecting part 111 are cylindrical structures, and the diameters of the first connecting part 221 and the second connecting part 111 are smaller than the inner diameters of the first connecting cavity 211 and the second connecting cavity 231. In this way, the first connecting part 221 and the second connecting part 111 can be flipped in any direction inside the first connecting cavity 211 or the second connecting cavity 231, thereby providing bending space for the cable bending protection device 10.

[0080] Furthermore, the lengths of the first connecting portion 221 and the second connecting portion 111 are both less than the lengths of the first connecting cavity 211 and the second connecting cavity 231. Thus, when the opening of the first connecting cavity 211 abuts against the large cylinder of the first flange 110, the second connecting portion 111 of the first flange 110 and the bottom wall of the first connecting cavity 211 have a first distance, which can reserve space for the second connecting portion 111 to flip within the first connecting cavity 211. When the opening of the first connecting cavity 211 abuts against the large cylinder of the second connecting member 220, the first connecting portion 221 of the second connecting member 220 and the bottom wall of the first connecting cavity 211 have a second distance, which can reserve space for the first connecting portion 221 to flip within the first connecting cavity 211. When the opening of the second connecting cavity 231 abuts against the large cylinder of the second connecting member 220, the first connecting portion 221 of the second connecting member 220 and the bottom wall of the second connecting cavity 231 have a third distance, which can reserve space for the second connecting portion 111 to flip within the second connecting cavity 231.

[0081] It should be noted that the diameters of the first connecting portion 221 and the second connecting portion 111 are equal, the inner diameters of the first connecting cavity 211 and the second connecting cavity 231 are equal, and the first spacing, the second spacing, and the third spacing are all equal. It can be understood that if the difference between the diameters of the first connecting portion 221 and the second connecting portion 111 and the inner diameters of the first connecting cavity 211 and the second connecting cavity 231 is 'a', and the lengths of the first spacing, the second spacing, and the third spacing are 'b', then 'a' and 'b' can jointly determine the maximum bending radius of the cable.

[0082] For example, if the cable diameter is 60mm, the diameter of the first through hole 101 is designed to be 70mm to facilitate cable installation. The inner diameter of the second through hole 102 is designed to be 62mm in its natural state. When the second flange 120 is connected to the third connector 230, the elastic clamping member 240 is compressed, causing the inner diameter of the second through hole 102 to decrease, thereby making interference contact with the outer surface of the cable and limiting cable slippage through friction. At the same time, the value of a is designed to be 20mm and the value of b is designed to be 36mm, so that when the cable is bent, there is space between the connectors and between the flange assembly 100 and the connector to freely follow the movement of the cable, while ensuring that the cable will not break at the maximum bending radius.

[0083] As one possible implementation, the opening of the first through hole 101 is rounded to protect the cable.

[0084] It is understandable that when the cable is bent, it will come into contact with the opening edge of the first through hole 101. By rounding the opening of the first through hole 101, the edge of the opening of the first through hole 101 can be prevented from squeezing or rubbing against the cable, thus preventing cable damage.

[0085] This application provides a cable bending limit protection device 10, including a flange assembly 100 and a connecting assembly 200. Both the flange assembly 100 and the connecting assembly 200 are provided with a first through hole 101 for the cable to pass through. The connecting assembly 200 includes multiple connectors connected sequentially, and the flange assembly 100 is connected to both ends of the connecting assembly 200. At least one end of the connecting assembly 200 is provided with an elastic clamping member 240, which is connected between the connectors and the flange assembly 100 and is used to clamp the cable. The multiple connectors and the flange assembly 100 and the connecting assembly 200 are movably connected to each other, allowing the cable bending limit protection device 10 to have bending space. The cable bending limit protection device 10 provided by this application has a simple structure, can provide all-directional protection for the cable, and can prevent the connectors from breaking when the cable is suspended.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cable bending limit protection device, characterized in that, The device includes a flange assembly (100) and a connecting assembly (200), both of which have a first through hole (101) for the cable to pass through. The connecting assembly (200) includes multiple connectors connected in sequence, and the flange assembly (100) is connected to both ends of the connecting assembly (200). At least one end of the connecting assembly (200) is provided with an elastic clamping member (240), which is connected between the connector and the flange assembly (100) and is used to clamp the cable. The multiple connectors and the flange assembly (100) are movably connected to each other to allow the cable bending protection device (10) to have bending space.

2. The cable bending protection device according to claim 1, characterized in that, The connecting component (200) includes a plurality of first connectors (210), a plurality of second connectors (220) and a third connector (230), wherein the plurality of first connectors (210) and the plurality of second connectors (220) are alternately connected to form a chain structure; at least one end of the chain structure is connected to the third connector (230).

3. The cable bending protection device according to claim 2, characterized in that, The first connector (210) has two first connecting cavities (211) with opposite opening directions. The second connector (220) has a first connecting part (221) at each end of its length direction. Any first connecting part (221) of the second connector (220) can be inserted into any first connecting cavity (211) of the first connector (210) to connect the first connector (210) and the second connector (220).

4. The cable bending protection device according to claim 3, characterized in that, At least one end of the chain structure is the second connector (220); the third connector (230) has a second connecting cavity (231) for inserting the first connecting part (221) so that the second connector (220) is connected to the third connector (230); the third connector (230) is provided with a recess (232) for installing the elastic clamping member (240).

5. The cable bending protection device according to claim 4, characterized in that, One end of the chain structure is the first connector (210), and the other end is connected to the third connector (230). The flange assembly (100) includes a first flange (110) and a second flange (120). The first flange (110) has a second connecting portion (111) for insertion into the first connecting cavity (211) so that the first flange (110) is connected to the first connector (210). The second flange (120) is connected to the side of the third connector (230) opposite to the second connecting cavity (231).

6. The cable bending protection device according to claim 5, characterized in that, The elastic clamping member (240) is disposed between the third connector (230) and the second flange (120); the elastic clamping member (240) has a second through hole (102), the diameter of the second through hole (102) is smaller than the diameter of the first through hole (101), and the second through hole (102) is used to clamp the cable to prevent the cable from sliding along the axial direction.

7. The cable bending protection device according to claim 5, characterized in that, The cavity wall of the first connecting cavity (211) and the cavity wall of the second connecting cavity (231) are provided with a plurality of countersunk holes (250); the connecting assembly (200) further includes a connecting bolt (270), the connecting bolt (270) is threadedly connected to the countersunk hole (250), and the connecting bolt (270) at least partially penetrates the countersunk hole (250) and extends into the first connecting cavity (211) or the second connecting cavity (231) to limit the first connecting part (221) or the second connecting part (111).

8. The cable bending protection device according to claim 5, characterized in that, Both the first connecting part (221) and the second connecting part (111) are cylindrical structures. The diameters of the first connecting part (221) and the second connecting part (111) are equal, and the inner diameters of the first connecting cavity (211) and the second connecting cavity (231) are equal. The diameters of the first connecting part (221) and the second connecting part (111) are smaller than the inner diameters of the first connecting cavity (211) and the second connecting cavity (231).

9. The cable bending protection device according to claim 5, characterized in that, When the first connector (210) is connected to the first flange (110) or the second connector (220), the first connecting part (221) or the second connecting part (111) has a gap with the bottom wall of the first connecting cavity (211); when the second connector (220) is connected to the third connector (230), the first connecting part (221) has a gap with the second connecting cavity (231).

10. The cable bending protection device according to claim 1, characterized in that, The opening of the first through hole (101) is rounded to protect the cable.

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