CN223713519U - Cable bending limiting protection device - Google Patents

Abstract

This application relates to the field of cable bending protection technology, and particularly to a cable bending protection device. This application provides a cable bending protection device, including a flange assembly and a connecting assembly. Both the flange assembly and the connecting assembly have a first through hole for a cable to pass through. The connecting assembly includes multiple connectors connected sequentially, with the flange assembly connected to both ends of the connecting assembly. At least one end of the connecting assembly has an elastic clamping member connected between the connector and the flange assembly, used to clamp the cable. The multiple connectors, as well as the flange assembly and the connecting assembly, are movably connected to each other, allowing the cable bending protection device to have bending space. The cable bending protection device 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.

Description

Cable bending limiting protection device

Technical Field

The application relates to the technical field of cable bending limiting protection, in particular to a cable bending limiting protection device.

Background

With the increasing of national power demands, outdoor cable construction projects are increasing, and the cable needs to bear various stress states under complex terrains and construction conditions. For example, the cable may be subjected to bending or twisting forces at various locations due to relief or construction operations, even in a vertically inverted state, resulting in the transfer of the dead weight and additional load of the lower connector to the upper connector due to gravity. In addition, the cable needs to cope with challenges such as dynamic load, environmental corrosion, mechanical damage and the like in long-term operation, and higher requirements are put on the installation efficiency, mechanical properties and adaptability of the bending limiting device.

In the related art, the bending limiting device is provided with a plurality of bending limiters which are mutually connected in series, and the bending degree of the cable is limited along all directions by mutually matching a plurality of components such as a pipe clamp, a bolt, a fixed seat, a brake rod, a connecting rod, a movable bin, a spring, a pull rod, an inserting block, a fixed column, a slot and the like.

However, the existing bending limiting devices are complex in structure and the top connector is prone to overload breakage when the cable is hung vertically upside down.

Disclosure of utility model

The application provides a cable bending limiting protection device, which aims to solve the technical problems that the existing bending limiting device is complex in structure and a top connecting piece is easy to overload and break when a cable is hung vertically upside down.

The application provides a cable bending limiting protection device which comprises a flange component and a connecting component, wherein the flange component and the connecting component are respectively provided with a first through hole for penetrating a cable, the connecting component comprises a plurality of connecting pieces, the connecting pieces are sequentially connected, the flange component is connected to two ends of the connecting component, at least one end of the connecting component is provided with an elastic clamping piece, the elastic clamping piece is connected between the connecting piece and the flange component, and the elastic clamping piece is used for clamping the cable, and the connecting pieces, the flange component and the connecting component can be movably connected, so that the cable bending limiting protection device has a bending space.

The application provides a cable bending limiting protection device, which protects a cable through a movably connected flange assembly and a plurality of connecting pieces, has a simpler overall structure, and ensures that the flange assembly, the connecting pieces and the connecting pieces can be movably connected, so that the cable can be bent in a certain space, and meanwhile, the bending degree of the cable is ensured not to be excessively large and broken. The elastic enclasping piece is further arranged between the connecting piece and the flange component and used for enclasping the cable, so that when the cable is hung, the cable can bear force, and therefore a part of gravity is shared, and the cable bending limiting protection device can be prevented from being broken due to overlarge top stress.

As an alternative implementation mode, the connecting assembly comprises a plurality of first connecting pieces, a plurality of second connecting pieces and a plurality of third connecting pieces, the plurality of first connecting pieces and the plurality of second connecting pieces are alternately connected to form a chain-shaped structure, and at least one end of the chain-shaped structure is connected with the third connecting piece.

The cable bending limiting device is arranged, a chain structure is formed by alternately connecting the plurality of first connecting pieces and the plurality of second connecting pieces, and cables with any length can be subjected to bending limiting protection.

As an alternative implementation mode, the first connecting piece is provided with two first connecting cavities, the opening directions of the two first connecting cavities are opposite, two ends of the length direction of the second connecting piece are respectively provided with a first connecting part, and any first connecting part of the second connecting piece can be inserted into any first connecting cavity of the first connecting piece so that the first connecting piece is connected with the second connecting piece.

By the arrangement, the first connecting parts and the first connecting cavities are connected, so that the first connecting parts and the second connecting parts can be alternately connected to form a chain-shaped structure with any length.

As an alternative implementation mode, at least one end part of the chain-shaped structure is a second connecting piece, the third connecting piece is provided with a second connecting cavity, the second connecting cavity is used for inserting the first connecting part so as to enable the second connecting piece to be connected with the third connecting piece, and the third connecting piece is provided with a concave part used for installing the elastic clasping piece.

So set up, chain structure is equipped with elasticity and holds tightly the piece at least one end, can prevent that the cable from sliding.

As an alternative embodiment, one end of the chain structure is a first connecting piece, and the other end is connected with a third connecting piece;

The flange assembly comprises a first flange and a second flange, wherein the first flange is provided with a second connecting part, the second connecting part is used for being inserted into the first connecting cavity so as to enable the first flange to be connected with the first connecting piece, and the second flange is connected to one side, away from the second connecting cavity, of the third connecting piece.

The cable bending limiting protection device can be fixed through the first flange and the second flange.

The elastic enclasping piece is provided with a second through hole, the diameter of the second through hole is smaller than that of the first through hole, and the second through hole is used for enclasping the cable so as to prevent the cable from sliding along the axial direction.

So set up, can hold tightly the cable through the second through-hole to prevent that the cable from following the axial slip.

The connecting assembly further comprises a connecting bolt, the connecting bolt is in threaded connection with the counter bore, and the connecting bolt at least partially penetrates through the counter bore and stretches into the first connecting cavity or the second connecting cavity so as to limit the first connecting portion or the second connecting portion.

Through the arrangement, the first connecting part or the second connecting part can be limited through the connecting bolt, and the components are prevented from being separated from each other.

As an alternative implementation mode, the first connecting portion and the second connecting portion are of cylindrical structures, the diameters of the first connecting portion and the second connecting portion are equal, the inner diameters of the first connecting cavity and the second connecting cavity are equal, and the diameters of the first connecting portion and the second connecting portion are smaller than the inner diameters of the first connecting cavity and the second connecting cavity.

So set up, first connecting portion or second connecting portion have can overturn the space in first connecting chamber or second connecting chamber.

As an alternative implementation mode, when the first connecting piece is connected with the first flange or the second connecting piece, the first connecting part or the second connecting part is spaced from the bottom wall of the first connecting cavity, and when the second connecting piece is connected with the third connecting piece, the first connecting part is spaced from the second connecting cavity.

So set up, first connecting portion or second connecting portion when first connecting chamber or second connecting chamber upset, the diapire in first connecting chamber or second connecting chamber can not cause blocking first connecting portion or second connecting portion.

As an alternative embodiment, the opening of the first through hole is rounded to protect the cable.

By the arrangement, the first through hole can be prevented from being abraded on the cable.

The application provides a cable bending limiting protection device which comprises a flange component and a connecting component, wherein the flange component and the connecting component are respectively provided with a first through hole for penetrating a cable, the connecting component comprises a plurality of connecting pieces, the connecting pieces are sequentially connected, the flange component is connected to two ends of the connecting component, at least one end of the connecting component is provided with an elastic clamping piece, the elastic clamping piece is connected between the connecting piece and the flange component, and the elastic clamping piece is used for clamping the cable, and the connecting pieces, the flange component and the connecting component can be movably connected, so that the cable bending limiting protection device has a bending space. The cable bending limiting protection device provided by the application has a simple structure, can protect cables in all directions, and can prevent the connecting piece from breaking when the cables are hung.

In addition to the technical problems, technical features constituting the technical solutions, and beneficial effects caused by the technical features of the technical solutions described above, other technical problems that the cable bend limiting protection device provided by the present application can solve, other technical features included in the technical solutions, and beneficial effects caused by the technical features, further detailed description will be made in the detailed description of the embodiments.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a cable bending-limiting protection device according to an embodiment of the present application;

FIG. 2 is a schematic structural view of a first flange according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a first connecting member according to an embodiment of the present application;

Fig. 4 is a schematic structural diagram of a second connecting member according to an embodiment of the present application;

Fig. 5 is a schematic structural diagram of a third connecting member according to an embodiment of the present application;

FIG. 6 is a schematic structural view of an elastic clasp according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a second flange according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a connecting bolt according to an embodiment of the present application;

Fig. 9 is a schematic structural view of a fixing bolt according to an embodiment of the present application;

Fig. 10 is a cross-sectional view of a cable bend limiting protection device according to an embodiment of the present application;

FIG. 11 is a cross-sectional view of a first end of a cable bend limiting protective device provided by an embodiment of the present application;

FIG. 12 is a cross-sectional view of a second end of the cable bend limiting protective device provided by an embodiment of the present application;

fig. 13 is a transparent view of a cable bend limiting protection device according to an embodiment of the present application.

Reference numerals illustrate:

10-a cable bend limiting protection device; 101-a first via 102-a second via;

100-flange assembly, 110-first flange, 111-second connection, 120-second flange, 121-projection;

200-connecting components, 210-first connecting pieces, 211-first connecting cavities, 220-second connecting pieces, 221-first connecting parts, 230-third connecting pieces, 231-second connecting cavities, 232-concave parts, 240-elastic clasping pieces, 250-counter bores, 260-grooves, 270-connecting bolts and 280-fixing bolts.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms first, second, third, fourth and the like in the description and in the claims and in the above drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged where appropriate. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein.

The term "if" as used herein may be interpreted as "at..once" or "when..once" or "in response to a determination", depending on the context.

Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise.

Furthermore, as used herein, "a plurality" means "at least two" unless the context indicates otherwise.

It will be further understood that the terms "comprises," "comprising," "includes," and/or "including" specify the presence of stated features, steps, operations, elements, components, items, categories, and/or groups, but do not preclude the presence, presence or addition of one or more other features, steps, operations, elements, components, items, categories, and/or groups.

The terms "or" and/or "as used herein are to be construed as inclusive, or meaning any one or any combination. Thus, "A, B and/or C" means "any of A, B, C, A and B, A and C, B and C, A, B and C". An exception to this definition will occur only when a combination of elements, functions, steps or operations are in some way inherently mutually exclusive.

With the increasing of national power demands, outdoor cable construction projects are increasing, and the cable needs to bear various stress states under complex terrains and construction conditions. For example, the cable may be subjected to bending or twisting forces at various locations due to relief or construction operations, even in a vertically inverted state, resulting in the transfer of the dead weight and additional load of the lower connector to the upper connector due to gravity. In addition, the cable needs to cope with challenges such as dynamic load, environmental corrosion, mechanical damage and the like in long-term operation, and higher requirements are put on the installation efficiency, mechanical properties and adaptability of the bending limiting device.

In the related art, the bending limiting device is provided with a plurality of bending limiters which are mutually connected in series, and the bending degree of the cable is limited along all directions by mutually matching a plurality of components such as a pipe clamp, a bolt, a fixed seat, a brake rod, a connecting rod, a movable bin, a spring, a pull rod, an inserting block, a fixed column, a slot and the like. However, the existing bending limiting device is complicated in structure and heavy in weight, and the upper connecting piece is easily broken by overload when the cable is hung upside down vertically.

In order to solve the technical problems, the application provides the cable bending limiting protection device, which protects a cable through a movably connected flange assembly and a plurality of connecting pieces, has a simpler overall structure, and ensures that the flange assembly, the plurality of connecting pieces and the plurality of connecting pieces can be movably connected, so that the cable can be bent in a certain space, and meanwhile, the bending degree of the cable is ensured not to be excessively large and broken. The cable is hung by the cable, and the cable is stressed by the elastic enclasping piece, so that partial gravity is shared, and the top connecting piece of the cable bending limiting protection device is prevented from being stressed excessively and broken.

Fig. 1 is a schematic structural view of a cable bending-limiting protection device according to an embodiment of the present application, fig. 2 is a schematic structural view of a first flange according to an embodiment of the present application, fig. 3 is a schematic structural view of a first connecting member according to an embodiment of the present application, fig. 4 is a schematic structural view of a second connecting member according to an embodiment of the present application, fig. 5 is a schematic structural view of a third connecting member according to an embodiment of the present application, fig. 6 is a schematic structural view of an elastic clasping member according to an embodiment of the present application, fig. 7 is a schematic structural view of a second flange according to an embodiment of the present application, fig. 8 is a schematic structural view of a connecting bolt according to an embodiment of the present application, fig. 9 is a schematic structural view of a fixing bolt according to an embodiment of the present application, fig. 10 is a cross-sectional view of a cable bending-limiting protection device according to an embodiment of the present application, fig. 11 is a cross-sectional view of a first end of a cable bending-limiting protection device according to an embodiment of the present application, fig. 12 is a cross-sectional view of a second end of a cable bending-limiting protection device according to an embodiment of the present application, and fig. 13 is a transparent view of a cable bending-limiting protection device according to an embodiment of the present application.

Referring to fig. 1 to 13, the present application provides a cable bending-limiting protection device 10, which comprises a flange assembly 100 and a connection assembly 200, wherein the flange assembly 100 and the connection assembly 200 are respectively provided with a first through hole 101 for passing through a cable, the connection assembly 200 comprises a plurality of connection pieces, the connection pieces are sequentially connected, the flange assembly 100 is connected to two ends of the connection assembly 200, at least one end of the connection assembly 200 is provided with an elastic clasping piece 240, the elastic clasping piece 240 is connected between the connection piece and the flange assembly 100, and the elastic clasping piece 240 is used for clasping the cable, wherein the flange assembly 100 and the connection assembly 200 can be movably connected among the plurality of connection pieces, so that the cable bending-limiting protection device 10 has a bending space.

It will be appreciated that the cable bend limiting protective device 10 may be provided to protect the cable at the cable bend section or cable suspension section. The first through hole 101 sets up in the center of flange subassembly 100 and connecting piece, and first through hole 101 can be cylindric, and during the installation, flange subassembly 100 and a plurality of connecting piece connect gradually for a plurality of first through holes 101 link into the passageway that supplies the cable to pass through, and the outer wall of flange subassembly 100 and a plurality of connecting piece can protect the cable. The flange assembly 100 and the connecting assembly 200 are movably connected with each other among the connecting members, so that a certain angle of rotation can be generated between the adjacent first through holes 101, and therefore, the cable bending limiting and protecting device 10 is provided with a certain bending space as a whole, and is convenient for bending the cable to facilitate construction, and meanwhile, the cable bending degree can be ensured not to be excessively large and broken.

The elastic enclasping piece 240 can fix the cable, so that the cable and the cable bending limiting protection device 10 are prevented from sliding relatively along the axial direction, and when the cable section protected by the cable bending limiting protection device 10 is hung, the cable can bear partial gravity load, thereby reducing the tensile force born by the connecting piece and the flange at the top of the cable bending limiting protection device 10 and preventing the cable bending limiting protection device 10 from breaking at the top position.

The flange assembly 100 and the connecting piece can be made of metal materials, such as Q235 carbon structural steel, and are subjected to epoxy paint aesthetic and scratch-resistant protection treatment, so that the flange assembly has good comprehensive mechanical properties, can resist stretching, shearing and bending, and the elastic enclasping piece 240 can be made of rubber for tires, and has good enclasping performance.

As one possible implementation, the connection assembly 200 includes a plurality of first connection members 210, a plurality of second connection members 220, and a third connection member 230, the plurality of first connection members 210 and the plurality of second connection members 220 being alternately connected to form a chain structure, and the third connection member 230 being connected to an end of the chain structure.

It will be appreciated that the chain structure is mainly formed by alternately connecting the first connector 210 and the second connector 220, and the number of the first connector 210 and the second connector 220 may be determined according to the length of the cable to be protected. The third connecting member 230 is connected to an end of the chain structure for fixing the elastic clasping member 240 in cooperation with the flange assembly 100.

Referring to fig. 3 and 4, in conjunction with fig. 11, as a possible implementation manner, the first connector 210 has two first connecting cavities 211, the opening directions of the two first connecting cavities 211 are opposite, two ends of the second connector 220 in the length direction are respectively provided with a first connecting portion 221, and any first connecting portion 221 of the second connector 220 can be inserted into any first connecting cavity 211 of the first connector 210, so that the first connector 210 is connected with the second connector 220.

The first connector 210 is cylindrical, a partition plate is disposed in the middle of the cylinder, the partition plate divides the middle cavity of the cylinder into a first connection cavity 211 and a second connection cavity 231, and a first through hole 101 is disposed in the middle of the partition plate to pass through the cable. The second connecting piece 220 is irregularly shaped, a large cylinder is arranged in the middle of the length direction of the second connecting piece 220, two first connecting parts 221 are connected to two sides of the large cylinder along the length direction of the second connecting piece 220, the first connecting parts 221 are small cylinders, the two small cylinders and the large cylinder are coaxially arranged, and a groove 260 is formed between the small cylinders and the large cylinder. The first through hole 101 of the second connection member 220 is disposed coaxially with the small cylinder and the large cylinder.

Referring to fig. 5, in combination with fig. 12, as a possible implementation manner, at least one end of the chain structure is a second connecting member 220, and the third connecting member 230 has a second connecting cavity 231, and the second connecting cavity 231 is used for inserting the first connecting portion 221 so as to connect the second connecting member 220 with the third connecting member 230.

It should be noted that, the third connecting member 230 is a cylindrical structure, the first end of the third connecting member 230 has a partition, one side of the partition and the inner side wall of the cylinder form a second connecting cavity 231, the partition forms a bottom wall of the second connecting cavity 231 on one side of the second connecting cavity 231, and the other side of the partition has a recess 232, and the recess 232 is used for mounting the elastic clasping member 240.

In some embodiments, if the cable to be protected is long, the two ends of the chain structure may be the second connecting members 220, and the two third connecting members 230 are respectively connected to the two second connecting members 220 at the two ends of the chain structure, and at this time, an elastic holding member 240 may be installed on each of the two third connecting members 230 to strengthen the limitation of the cable.

Referring to fig. 2 and 7, in some embodiments, the chain structure has a first connecting member 210 at one end and a third connecting member 230 connected to the other end, the flange assembly 100 includes a first flange 110 and a second flange 120, the first flange 110 has a second connecting portion 111, the second connecting portion 111 is configured to be inserted into the first connecting cavity 211 so that the first flange 110 is connected to the first connecting member 210, and the second flange 120 is connected to a side of the third connecting member 230 facing away from the second connecting cavity 231.

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 direction of the first flange 110 to form the second connecting portion 111, the large cylindrical structure and the small cylindrical structure are coaxially connected, and a groove 260 is formed between the large cylindrical structure and the small cylindrical structure. The large cylinder of the first flange 110 has 6 flange holes, and the first flange 110 is fastened to the cable installation base by 6 bolts.

Referring to fig. 12, the second flange 120 is connected to a side of the third connecting member 230 facing away from the second connecting cavity 231, a recess 232 is formed on a side of the third connecting member 230 facing away from the second connecting cavity 231, the second flange 120 has a protrusion 121, the recess 232 is used for placing an elastic clasping member 240, the elastic clasping member 240 has a second through hole 102, the second through hole 102 can pass through a cable, the diameter of the second through hole 102 is smaller than that of the first through hole 101, when the cable is installed, the protrusion 121 of the second flange 120 abuts against the elastic clasping member 240, the second flange 120 is fixed on the third connecting member 230 through fixing bolts 280, the fixing bolts 280 can be 3, and after the fixing bolts are screwed, the protrusion 121 presses the elastic clasping member 240, so that the second through hole 102 is further reduced, and the cable is in interference contact with the elastic clasping member 240.

It should be noted that, the cavity walls of the first connection cavity 211 and the second connection cavity 231 are respectively provided with a plurality of counter bores 250, the connection assembly 200 further includes a connection bolt 270, the connection bolt 270 is in threaded connection with the counter bores 250, and the connection bolt 270 at least partially penetrates through the counter bores 250 and extends into the first connection cavity 211 or the second connection cavity 231 to limit the first connection portion 221 or the second connection portion 111.

Illustratively, the cavity wall of the first connection cavity 211 and the cavity wall of the second connection cavity 231 are each provided with 3 counter bores 250,3 counter bores 250 circumferentially spaced around the cavity wall Zhou Xianghuo of the first connection cavity 211 and the cavity wall of the second connection cavity 231 and extending through the cavity wall of the first connection cavity 211 and the cavity wall of the second connection cavity 231. In addition, the counterbore 250 is inclined at an angle of 30-60 with respect to the axial direction of the first connector 210 or the axial direction of the third connector 230.

It should be noted that, the inlet section of the counter bore 250 is a cylindrical smooth through hole, the outlet section is a threaded hole, the upper portion of the connecting bolt 270 is a threaded handle, the middle portion is a threaded portion, the threads of the portion are matched with the threads of the outlet section of the counter bore 250, and the lower portion of the connecting bolt 270 is a smooth cylinder with an outer diameter slightly smaller than that of the middle portion of the connecting bolt 270.

During installation, when each component is connected, the connecting bolts 270 are screwed into the corresponding counter bores 250 and screwed into place, at this time, the first connecting portions 221 are inserted into the first connecting cavities 211, the connecting bolts 270 are clamped in the grooves 260 of the second connecting pieces 220, at the two ends of the chain-shaped structure, the second connecting portions 111 of the first flanges 110 are inserted into the first connecting cavities 211 of the first connecting pieces 210, the connecting bolts 270 are clamped in the grooves 260 of the first flanges 110, the first connecting portions 221 of the second connecting pieces 220 are inserted into the second connecting cavities 231 of the third connecting pieces 230, the connecting bolts 270 are clamped in the grooves 260 of the second connecting pieces 220, and meanwhile, the second flanges 120 are connected with the third connecting pieces 230 through the fixing bolts 280 and compress the elastic clamping pieces 240, so that the installation of the cable bending limiting device is completed.

It should be noted that, when the opening of each first connecting cavity 211 is rounded, the opening of the first connecting cavity 211 is only required to be abutted against the large cylinder of the first flange 110, or the opening of the first connecting cavity 211 is abutted against the large cylinder of the second connecting piece 220, then the connecting bolt 270 is screwed into the counter bore 250, so that the connection between the first connecting piece 210 and the first flange 110 is completed, or the connection between the first connecting piece 210 and the second connecting piece 220 is completed, when the cable is bent, the friction or collision of the opening of the first connecting cavity 211 against the large cylinder of the first flange 110 or the large cylinder of the second connecting piece 220 can be reduced through the rounded corner, when the opening of the second connecting cavity 231 is rounded, the opening of the second connecting cavity 231 is abutted against the large cylinder of the second connecting piece 220, and then the connecting bolt 270 is screwed into the counter bore 250, so that the connection between the first connecting piece 210 and the second connecting piece 220 can be completed, and when the cable is bent, the friction or collision of the opening of the second connecting cavity 231 against the large cylinder of the second connecting piece 220 can be reduced through the rounded corner.

In some embodiments, the included angle formed by the counterbore 250 and the axial direction of the first connecting member 210 or the axial direction of the third connecting member 230 may be 60 °, and after the connecting bolt 270 is screwed in, the connecting bolt 270 and the axial direction of the first connecting member 210 or the axial direction of the third connecting member 230 form an included angle of 60 °, so that the advantage of combined stress can be fully utilized, and the shearing force and the stretching force born by the connecting bolt 270 are minimized, so that the mechanical performance exerted by the connecting bolt 270 is optimal, and the damage to the connecting member caused by the shearing force or the stretching force alone due to the conventional bending limiter connection is overcome.

It should be noted that the connecting bolt 270 and the fixing bolt 280 may be made of a metal material, such as 23750.

It should be noted that, the first connection portion 221 and the second connection portion 111 are both in a cylindrical structure, and the diameters of the first connection portion 221 and the second connection portion 111 are smaller than the inner diameters of the first connection cavity 211 and the second connection cavity 231, so that the first connection portion 221 and the second connection portion 111 can be turned in any direction inside the first connection cavity 211 or the second connection cavity 231, and the cable bending-limiting protection device 10 provides a bending space.

In addition, the length of the first connecting portion 221 and the length of the second connecting portion 111 are smaller than the lengths of the first connecting cavity 211 and the second connecting cavity 231, so that when the opening of the first connecting cavity 211 is abutted against the large cylinder of the first flange 110, the first space is reserved for the second connecting portion 111 in the first connecting cavity 211 due to the fact that the second connecting portion 111 of the first flange 110 is in a first interval with the bottom wall of the first connecting cavity 211, and when the opening of the first connecting cavity 211 is abutted against the large cylinder of the second connecting piece 220, the second space is reserved for the first connecting portion 221 in the first connecting cavity 211 due to the fact that the first connecting portion 221 of the second connecting piece 220 is in a second interval with the bottom wall of the second connecting cavity 231 due to the fact that the third space is reserved for the second connecting portion 111 in the second connecting cavity 231 due to the fact that the second connecting portion 221 is in a second interval with the bottom wall of the second connecting cavity 231 is abutted against the large cylinder of the second connecting piece 220.

When the diameters of the first connection portion 221 and the second connection portion 111 are equal, the inner diameters of the first connection chamber 211 and the second connection chamber 231 are equal, and the first pitch, the second pitch, and the third pitch are equal. It will be appreciated that if the diameters of the first connection portion 221 and the second connection portion 111 are different from the inner diameters of the first connection chamber 211 and the second connection chamber 231 by a, and the lengths of the first interval, the second interval, and the third interval are b, the a and b may together determine the maximum bending radius of the cable.

For example, if the diameter of the cable is 60mm, the diameter of the first through hole 101 is designed to be 70mm, so that the cable is conveniently installed, the inner diameter of the second through hole 102 is designed to be 62mm in a natural state, and when the second flange 120 is connected with the third connecting member 230, the elastic clasping member 240 is pressed, so that the inner diameter of the second through hole 102 becomes smaller, thereby being in interference contact with the outer surface of the cable, and limiting the cable to slide by friction. Meanwhile, the values of a and b are designed to be 20mm and 36mm, so that when the cable is bent, a space which can freely follow the movement of the cable exists between the connecting pieces and between the flange assembly 100 and the connecting pieces, and meanwhile, the cable is ensured not to be broken when the cable is bent at the maximum bending radius.

As a possible implementation, the opening of the first through hole 101 is rounded to protect the cable.

It will be appreciated that when the cable is bent, the cable will contact the edge of the opening of the first through hole 101, and by rounding the opening of the first through hole 101, it is possible to prevent the edge of the opening of the first through hole 101 from pressing or rubbing against the cable, thereby damaging the cable.

The application provides a cable bending limiting protection device 10, which comprises a flange assembly 100 and a connecting assembly 200, wherein the flange assembly 100 and the connecting assembly 200 are respectively provided with a first through hole 101 for penetrating a cable, the connecting assembly 200 comprises a plurality of connecting pieces, the connecting pieces are sequentially connected, the flange assembly 100 is connected to two ends of the connecting assembly 200, at least one end of the connecting assembly 200 is provided with an elastic holding piece 240, the elastic holding piece 240 is connected between the connecting piece and the flange assembly 100, and the elastic holding piece 240 is used for holding the cable, and the plurality of connecting pieces, the flange assembly 100 and the connecting assembly 200 can be movably connected, so that the cable bending limiting protection device 10 has a bending space. The cable bending limiting protection device 10 provided by the application has a simple structure, can protect cables in all directions, and can prevent the connecting piece from breaking when the cables are hung.

It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same, and although the present application has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims (10)

1. The cable bending limiting protection device is characterized by comprising a flange assembly (100) and a connecting assembly (200), wherein the flange assembly (100) and the connecting assembly (200) are respectively provided with a first through hole (101) for penetrating a cable, the connecting assembly (200) comprises a plurality of connecting pieces, the connecting pieces are sequentially connected, the flange assembly (100) is connected to two ends of the connecting assembly (200), at least one end of the connecting assembly (200) is provided with an elastic holding piece (240), the elastic holding piece (240) is connected between the connecting piece and the flange assembly (100), the elastic holding piece (240) is used for holding the cable tightly, and a plurality of connecting pieces, the flange assembly (100) and the connecting assembly (200) are movably connected, so that the cable bending limiting protection device (10) has a bending space.

2. The cable bend limiting protective device according to claim 1, wherein the connection assembly (200) comprises a plurality of first connection members (210), a plurality of second connection members (220) and a plurality of third connection members (230), the plurality of first connection members (210) and the plurality of second connection members (220) are alternately connected to form a chain structure, and at least one end of the chain structure is connected to the third connection members (230).

3. The cable bend limiting protection device according to claim 2, wherein the first connecting piece (210) has two first connecting cavities (211), the opening directions of the two first connecting cavities (211) are opposite, two ends of the second connecting piece (220) in the length direction are respectively provided with a first connecting portion (221), and any first connecting portion (221) of the second connecting piece (220) can be inserted into any first connecting cavity (211) of the first connecting piece (210) so that the first connecting piece (210) is connected with the second connecting piece (220).

4. A cable bend limiting protector according to claim 3, wherein at least one end of the chain structure is the second connector (220), the third connector (230) has a second connecting cavity (231), the second connecting cavity (231) is used for inserting the first connecting portion (221) so that the second connector (220) is connected with the third connector (230), the third connector (230) is provided with a recess (232), and the recess (232) is used for mounting the elastic clasping member (240).

5. The cable bend limiting protection device according to claim 4, wherein one end of the chain structure is the first connecting member (210), and the other end is connected with the third connecting member (230);

The flange assembly (100) comprises a first flange (110) and a second flange (120), the first flange (110) is provided with a second connecting portion (111), the second connecting portion (111) is used for being inserted into the first connecting cavity (211) so that the first flange (110) is connected with the first connecting piece (210), and the second flange (120) is connected to one side, away from the second connecting cavity (231), of the third connecting piece (230).

6. The cable bend limiting protector according to claim 5, wherein the elastic clasping member (240) is disposed between the third connecting member (230) and the second flange (120), the elastic clasping member (240) has a second through hole (102), the second through hole (102) has a smaller diameter than the first through hole (101), and the second through hole (102) is configured to clasp the cable to prevent the cable from sliding in an axial direction.

7. The cable bend limiting protection device of claim 5, wherein the cavity wall of the first connection cavity (211) and the cavity wall of the second connection cavity (231) are provided with a plurality of counter bores (250), the connection assembly (200) further comprises a connection bolt (270), the connection bolt (270) is in threaded connection with the counter bores (250), and the connection bolt (270) at least partially penetrates through the counter bores (250) and extends into the first connection cavity (211) or the second connection cavity (231) to limit the first connection portion (221) or the second connection portion (111).

8. The cable bend limiting protection device according to claim 5, wherein the first connection portion (221) and the second connection portion (111) are both cylindrical structures, diameters of the first connection portion (221) and the second connection portion (111) are equal, inner diameters of the first connection cavity (211) and the second connection cavity (231) are equal, and diameters of the first connection portion (221) and the second connection portion (111) are smaller than inner diameters of the first connection cavity (211) and the second connection cavity (231).

9. The cable bend limiting protection device according to claim 5, wherein when the first connector (210) is connected to the first flange (110) or the second connector (220), the first connector (221) or the second connector (111) has a distance from a bottom wall of the first connecting cavity (211), and when the second connector (220) is connected to the third connector (230), the first connector (221) has a distance from the second connecting cavity (231).

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