Fixing device, system and method for snakelike laying of cable

Abstract

The invention relates to the technical field of power cables, and discloses a cable snakelike laying fixing device, system and method. The fixing device comprises a fixing support and a fixing hoop. The fixing support comprises a plurality of first supporting rods extending in the Z direction, a plurality of second supporting rods extending in the X direction and a plurality of third supporting rods extending in the Y direction, the second supporting rods are perpendicular to the third supporting rods, and the first supporting rods are perpendicular to the second supporting rods and the third supporting rods; each first supporting rod is provided with at least one fixing hoop, each fixing hoop is provided with an elastic connecting piece, one end of each elastic connecting piece is connected with the corresponding fixing hoop, the other opposite end of each elastic connecting piece is connected with the corresponding first supporting rod, and the problem that an existing device cannot adapt to external force stretching, and consequently cables are damaged is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power cables, and in particular to a fixing device, system and method for serpentine laying of cables. Background Art

[0002] With modern society's increasing demand for stable power supply, the safety and reliability of cables, as key carriers of power transmission, are crucial. In special environments such as geological subsidence, cables are prone to stretching, shearing, or twisting due to external forces, leading to breakage or insulation damage. This can cause power outages and safety hazards, severely impacting social production and people's lives. Therefore, serpentine laying is an option to prevent excessive cable tension and breakage. However, existing cable laying devices require manual intervention and adjustment, are unable to effectively adapt to external cable stretching, and can easily damage the cables. Summary of the Invention

[0003] In view of the above-mentioned defects of the prior art, the present invention provides a fixing device, system and method for serpentine laying of cables to solve the problem that the existing devices cannot adapt to external stretching and cause cable damage.

[0004] In a first aspect of the present application, a fixing device for serpentine laying of cables is provided, comprising: a fixing bracket and a fixing clamp; The fixed bracket includes a plurality of first support rods extending in the Z direction, a plurality of second support rods extending in the X direction, and a plurality of third support rods extending in the Y direction, the second support rods and the third support rods being perpendicular to each other, and the first support rods being perpendicular to the second support rods and the third support rods; Each of the first support rods is provided with at least one fixed hoop, and the fixed hoop is connected to an elastic connector, one end of the elastic connector is connected to the fixed hoop, and the other end is connected to the first support rod.

[0005] Preferably, a plurality of the first support rods are arranged in layers, with at least two first support rods in each layer, and the first support rods in each layer are aligned vertically.

[0006] Preferably, the fixed clamp includes: a customized clamp and a sliding base, the customized clamp is connected to the sliding base through a universal roller, the sliding base is a hollow rectangular structure, the bottom opening of the sliding base is an inverted U shape, and the inner side of the sliding base slides with the first support rod.

[0007] Preferably, a protective cushion layer is provided on the inner side of the customized clamp.

[0008] Preferably, the customized clamp is a ring structure.

[0009] Preferably, the customized clamp includes two semicircular clamps, and the two semicircular clamps are connected and fixed by fasteners.

[0010] In a second aspect of the present application, a system for serpentine laying of cables is provided, comprising: cables and fixing devices; wherein, a plurality of first support rods are arranged in layers, with at least two first support rods in each layer, and the first support rods in each layer are aligned vertically; the fixing clamps arranged on the plurality of first support rods on the same layer are arranged alternately left and right along the cable laying direction; the cables pass through the serpentine-arranged fixing clamps to realize serpentine laying of the cables.

[0011] In a third aspect of the present application, a method for serpentine laying of cables is provided, comprising the following steps: S1, determine the bending amplitude, laying pitch and spacing between adjacent cables when the cable is laid in a serpentine pattern on a fixed support; S2, providing fixed clamps staggered along the cable laying direction on the fixed bracket according to the bending amplitude, laying pitch and spacing between adjacent cables; S3, pass each cable through each column of staggered fixed clamps to achieve serpentine laying of the cables.

[0012] Preferably, the step S1 includes: Determining the bending amplitude according to the expansion and contraction margin of the cable, wherein the bending amplitude represents the unilateral offset of the cable serpentine shape; Determining the laying pitch according to the bending amplitude, wherein the laying pitch represents a vertical distance between adjacent first support rods in the same layer; The distance between adjacent cables is determined according to the number of cables to be laid and the length of the first support rod.

[0013] The beneficial effects of the present invention are: providing a certain expansion and contraction space for the cable, reducing the tension on the cable in special environments, and through the sliding adjustment system composed of the sliding base and the elastic connecting member in the fixing device, the fixed clamp can slide on the first support rod due to its active sliding adjustment mechanism. When encountering special circumstances, the tensile stress is released as the fixed clamp moves, avoiding the cable from being broken by excessive force, and after the external force on the cable disappears or decreases, the cable is restored to a serpentine laying state according to the elastic force of the elastic connecting member, avoiding the problem of cable margin hanging caused by the disappearance of the external force after the cable is stretched by external force, thereby improving the safety and reliability of the cable, and the fixing device composed of the fixed bracket and the fixed clamp in the present application is simple and highly operable, easy to install and maintain, and effectively improves the practicality of the fixing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a fixing device for serpentine laying of cables provided in an embodiment of the present application; Figure 2This is a structural diagram of a fixed clamp provided in an embodiment of the present application; Figure 3 This is a schematic diagram of a universal roller structure provided in an embodiment of the present application; Figure 4 This is a schematic structural diagram of an elastic connector provided in an embodiment of the present application; Figure 5 It is a structural schematic diagram of another fixing device for serpentine laying of cables provided in an embodiment of the present application. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, in the description of the present invention, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific manner. Therefore, they should not be construed as limiting the present invention. The terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] With modern society's increasing demand for stable power supply, the safety and reliability of cables, as key carriers of power transmission, are of paramount importance. In special environments such as geological subsidence, cables are prone to stretching, shearing, or twisting due to external forces, leading to breakage or insulation damage, resulting in power outages and safety hazards, seriously impacting social production and people's lives. Traditional cable laying devices mostly use rigid fixation, but in special environments such as geological subsidence, the huge shear force generated by fault movement directly acts on the cable body. The cable cannot adapt to the relative displacement of the ground, which can cause the laying bracket and tunnel structure to move synchronously, resulting in excessive cable stretching and breakage, and a series of other problems.

[0017] Therefore, the present application provides a fixing device for cable laying in complex environments. By designing a serpentine laying device with a margin, a certain expansion and contraction space is provided for the cable to ensure the normal operation of the cable. The active sliding adjustment mechanism of the device can also enable the cable to adaptively adjust when subjected to tension to cope with geological subsidence or other environmental changes in special environments. That is, when encountering a special environment, the limiting device is destroyed, and the customized clamp can automatically slide in the preset direction to release the tensile stress, avoid the cable from being broken by excessive force, and improve the safety and reliability of the cable.

[0018] The following describes the embodiments of the present application with reference to the accompanying drawings. Figure 1 As shown, Figure 1 It is a structural schematic diagram of a fixing device for serpentine laying of cables provided by an embodiment of the present invention.

[0019] The fixing device for the serpentine laying of the cable comprises: a fixing bracket and a fixing clamp 2; The fixed bracket includes a plurality of first support rods 3 extending in the Z direction, a plurality of second support rods 4 extending in the X direction, and a plurality of third support rods 5 extending in the Y direction. The second support rods 4 and the third support rods 5 are perpendicular to each other, and the first support rods 3 are perpendicular to the second support rods 4 and the third support rods 5. At least one fixing hoop 2 is provided on each first support rod 3 , and an elastic connector 8 is connected to the fixing hoop 2 . One end of the elastic connector 8 is connected to the fixing hoop 2 , and the other end is connected to the first support rod 3 .

[0020] Specifically, the fixing bracket and the fixing clamp 2 form a fixing device for serpentine laying of cables, which can be fixed on the building 1.

[0021] The fixed bracket refers to a bracket for storing cable allowance. The fixed bracket is composed of multiple support rods, wherein the support rods include three parts, including a first support rod 3, a second support rod 4 and a third support rod 5. The first support rod 3 extends in the Z direction and is arranged in parallel in pairs for supporting and binding cables to ensure normal operation of the cables. The second support rods 4 extend in the X direction and are also parallel to each other. The third support rods 5 extend in the Z direction and are parallel in pairs. X, Y, and Z can be three directions in a three-dimensional triangular coordinate system.

[0022] The first support rod 3 is perpendicular to the second support rod 4 and the third support rod 5. This means that the second support rod 4 and the third support rod 5 are connected perpendicularly to each other. Within the same plane, the first support rod 3 is perpendicular to the plane, and the vertical point of the first support rod 3 within the plane can be the intersection of the second support rod 4 and the third support rod 5, which facilitates the welding structure of the fixed bracket. In addition, the length of the second support rod 4 and the third support rod 5 can exceed the outermost first support rod 3 on each side, so that the cable will not slip off the first support rod 3 when subjected to external force.

[0023] The number of the fixing clamps 2 on each first support rod 3 can be determined based on the number of pre-laid cables, that is, one fixing clamp on each first support rod 3 corresponds to one cable.

[0024] The plurality of first support rods 3 in the fixed bracket are arranged in layers, each layer has at least two first support rods 3, and the first support rods 3 in each layer are aligned vertically.

[0025] Specifically, the multi-layer arrangement of the first support rods 3 in the fixed bracket can form a corresponding cable laying layer for cable laying. In order to make the cable laying space sufficient and not wasteful, the phase distance of the first support rods 3 in the Y direction can be reasonably set, that is, a reasonable layer spacing of the first support rods can be set. The phase distance can be 2-5 times the cable diameter while meeting the cable laying requirements without wasting too much space. There is no restriction here.

[0026] In order to ensure the stability of cable laying, a fixed clamp 2 is set on the first support rod. The fixed clamp 2 includes: a customized clamp 21 and a sliding base 24. The customized clamp 21 and the sliding base 24 are connected through a universal roller 23. The sliding base 24 is a hollow rectangular structure with an inverted U-shaped bottom opening. The inner side of the sliding base 24 slides with the first support rod 3.

[0027] Figure 2 This is a schematic diagram of a fixed clamp provided in an embodiment of the present application. Figure 2 As shown, the fixed clamp 2 is connected to the customized clamp 21, the universal roller 23, and the sliding base 24 in sequence. The universal roller 23 can be installed on the sliding base 24 to roll and support the customized clamp 21, so that the customized clamp 21 can be adjusted at multiple angles to adapt to the cable without being damaged by excessive pressure during the telescopic angle change.

[0028] Figure 3 This is a schematic diagram of a universal roller structure provided in an embodiment of the present application. Figure 3 As shown, the universal roller 23 may include a ball 231 and a fixed cylinder 232. The ball 231 is used to realize the directional rotation of the customized clamp 21, and the fixed cylinder 232 is used to fix the ball 231. The lower side of the fixed cylinder 232 is rigidly connected to the top surface of the sliding base, and the inner side is rollingly connected to the ball 231. The specific connection method is not limited here, and the top of the ball 231 extends beyond the upper side of the fixed cylinder 232 so that a gap is left between the fixed cylinder 232 and the customized clamp 21 to facilitate the movement of the customized clamp 21. The fixed cylinder 232 can be welded to the customized clamp 21 or the ball 231 can be connected to the customized clamp 21 by other rigid fixing methods.

[0029] In addition, a protective pad layer 22 is provided inside the custom clamp 21. The protective pad layer 22 is used to reduce the friction and pressure between the cable and the custom clamp 21. Its material includes but is not limited to rubber, silicone or foam material, which can protect the cable from being crushed or scratched during the expansion and contraction sliding process in the custom clamp 21.

[0030] The customized clamp 21 is used to wrap the cable and tighten it to secure it during installation. To accommodate the cable shape, the customized clamp 21 is an annular structure with an inner diameter that matches the outer diameter of the cable. The annular structure of the customized clamp 21 can include two semicircular clamps, which are connected and fixed by a fastener 7. The curvature of the semicircular clamps can be changed to accommodate different cable cross-sectional shapes. Accordingly, the customized clamp 21 can also include multiple detachable arc-shaped clamps, which can also be fixed by fasteners 7. The fasteners 7 can be bolts or other locking structures. This allows for detachable installation of the customized clamp 21, facilitating device maintenance and adapting to different cable diameters.

[0031] The sliding base 24 has an inverted U structure, the inner side of which can cooperate with the outer side of the first support rod. The cable is fixed by the friction force generated by the sliding base 24 wrapping the first support rod 3. The sliding base 24 and the elastic connecting member 8 (such as a spring) form an active adjustment system, which enables the cable to adaptively adjust its laying state.

[0032] The elastic connector 8 and the fixed clamp 2 together constitute an active dynamic adjustment system for the cable. One end of the elastic connector 8 is connected to the sliding base 24 of the fixed clamp 2, and the other end is connected to the first support rod 3. Its elastic characteristics match the cable serpentine laying parameters. When the cable is pulled by an external force, the elastic connector 8 can be compressed and contracted or stretched. That is, when the cable is arranged on the inside of the trough, the elastic connector 8 is compressed and contracted based on the external force, storing elastic potential energy. When the elastic connector 8 is arranged on the outside of the crest, the elastic connector 8 is stretched based on the external force, generating a reverse restoring force. Regardless of whether the elastic connector 8 is squeezed or stretched, it can restore the cable to its original laying state through elastic deformation. That is, when the external force disappears or decreases, the elastic connector 8 drives the cable to reset by releasing potential energy. In this way, external force interference can be offset and unexpected cable displacement can be suppressed. The elastic force output can also be automatically adjusted according to the size of the external force to maintain the stability of the cable laying state.

[0033] The position of the elastic connector is not limited in this application. It can be placed outside the cable crest or inside the trough. The direction of its elastic potential energy is adaptively determined by the position and direction of the elastic connector and the direction of external force pulling the cable.

[0034] This application takes the arrangement of all elastic connectors 8 on the inner side of the cable trough as an example. Figure 1 As shown, the elastic connectors are all located inside the trough. The specific connection method is as follows Figure 4 As shown, one end of the elastic connector 8 is connected to the sliding base 24 of the fixed clamp 2 (can be connected by welding), and the other end is fixed to the screw 81 on the first support rod 3 through a buckle (the buckle and the screw 81 can be movably connected or fixedly connected). Figure 5This is a schematic diagram of the cable being stretched by an external force and squeezing the elastic connector 8. When the cable is stretched by an external force, the cable Figure 5 Move in the direction indicated by the middle arrow to squeeze the elastic connector 8. Of course, there is no restriction on the fixing method of the elastic connector 8. The elastic connector 8 can also be set to wrap the first support rod to connect the fixed clamp 2 and the first support rod 3.

[0035] In this way, the cable can adaptively adjust the shape of the margin laying according to the change of external force and the elastic potential energy of the elastic connector 8, thereby realizing the serpentine laying of the cable, solving the problem that the cable margin cannot be well laid after the external force disappears or decreases.

[0036] It should also be noted that in actual application, the material of the sliding base and the roughness of the inner wall of the sliding base can be adaptively adjusted according to the cable laying requirements to increase or decrease the maximum friction between the sliding base 24 and the first support rod 3. The maximum friction and the elastic potential energy of the elastic connector 8 can adapt to environmental changes to cause the cable to expand and contract, and the width of the bottom opening of the sliding base 24 can be smaller than the width of the short side of the cuboid, so that the sliding base will not separate from the first support rod 3.

[0037] Although the cable is subjected to a sudden external force causing the sliding base 24 to slide on the first support rod 3, the cable will not be damaged by the sudden external force due to the blocking of the second support rod 4 and the friction between the sliding base 24 and the first support rod 3.

[0038] It should also be noted that certain positions of the cables can also be rigidly fixed to avoid chaotic collisions caused by too many cables during extension and retraction, and to further ensure that other cables will not fall off the fixed bracket, that is, the rigidly fixed cables can be fixed by a rigid clamp, for example, the fixed clamp 2 can be replaced with a rigid clamp near the fixed object 1 and near the second support rod 4. The specific rigid fixed position can be determined based on actual conditions. The rigid clamp can be obtained by adjusting or replacing the sliding base 24 in the fixed clamp 2, that is, the fixed clamp can be removed and the sliding base only includes a universal roller and a customized clamp. The rigid clamp is rigidly fixed by welding the universal roller to the first support rod 3 or the fixed object 1. The rigid clamp can be set at the corresponding position of the fixed bracket according to the judgment of the operator, and there is no restriction here.

[0039] This cable-laying fixture not only provides ample space for serpentine cable laying but also effectively improves cable safety and reliability in complex environments, extending cable service life and ensuring a stable power supply. Furthermore, the device boasts a simple structure, is easy to install and maintain, and offers high practicality and cost-effectiveness, making it widely applicable in areas requiring high-reliability cable laying, such as power transmission and distribution, rail transit, and petrochemicals.

[0040] Correspondingly, an embodiment of the present application also provides a system for serpentine laying of cables, including: a cable 6 and a fixing device; in the fixing device, multiple first support rods 3 are arranged in layers, with at least two first support rods 3 on each layer, and the first support rods on each layer are aligned up and down, and the fixing clamps 2 arranged on the multiple first support rods 3 on the same layer are arranged alternately left and right along the cable laying direction; the cable 6 passes through the serpentine-arranged fixing clamps 2 to realize serpentine laying of the cable.

[0041] The present application also provides a method for serpentine laying of cables, the method comprising the following steps: S1, determine the bending amplitude, laying pitch and spacing between adjacent cables when the cable is laid in a serpentine pattern on a fixed support; S2, providing fixed clamps staggered along the cable laying direction on the fixed bracket according to the bending amplitude, laying pitch and spacing between adjacent cables; S3, pass each cable through each column of staggered fixed clamps to achieve serpentine laying of the cables.

[0042] Step S1 includes: Determining the bending amplitude according to the expansion and contraction margin of the cable, wherein the bending amplitude represents the unilateral offset of the cable serpentine shape; Determining the laying pitch according to the bending amplitude, wherein the laying pitch represents a vertical distance between adjacent first support rods in the same layer; The distance between adjacent cables is determined according to the number of cables to be laid and the length of the first support rod.

[0043] Among them, the bending amplitude of the cable can be determined according to the cable expansion margin and the actual outer diameter of the cable. The cable bending amplitude can be set arbitrarily within the maximum bending amplitude of the cable, but it must meet the normal operation of the cable. The maximum bending amplitude needs to be determined according to the cable outer diameter and the cable expansion margin. It will not be expanded here. The maximum bending amplitude of the cable limit can avoid damage to the cable due to excessive bending. The cable expansion margin indicates the expansion margin required by the cable in the corresponding laying environment. The calculation method of the expansion margin is not expanded here as long as it is reasonable.

[0044] The laying pitch is determined according to the bending amplitude of the cable so that the cable can be laid reasonably on the fixed bracket. The laying pitch can be understood as the distance between adjacent first support rods, such as Figure 5 L shown.

[0045] Reasonable laying of the cables can be achieved by determining the spacing between adjacent cables according to the number of cables to be laid and the length of the first support rod.

[0046] During actual application, the structural parameters of the fixed bracket can be adaptively adjusted based on the determined laying pitch and bending amplitude, such as the adjacent spacing of the first support rods in the same cable laying layer, the number and length of the first support rods, etc., to improve the flexibility of the serpentine laying of the cable. During the process of determining the various parameters of the cable laying, the operator can make adjustments according to the actual situation to adapt to different laying requirements.

[0047] This allows the cable to be laid in a serpentine shape on a fixed bracket to adapt to the cable's expansion and contraction changes, taking into account both the stable operation of the cable under normal conditions and the adaptive protection capability under special circumstances. This greatly improves the cable's survivability in complex environments, effectively reduces the risk of cable damage due to environmental factors, and avoids internal structural damage and outer sheath wear caused by excessive stress on the cable, thereby extending the cable's service life, reducing the frequency of cable replacement and maintenance, and reducing the economic losses and social impacts caused by power outages.

[0048] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A fixing device for serpentine laying of cables, characterized in that: include: A fixing bracket and a fixing clamp (2); The fixed bracket comprises a plurality of first support rods (3) extending in the Z direction, a plurality of second support rods (4) extending in the X direction, and a plurality of third support rods (5) extending in the Y direction, wherein the second support rods (4) and the third support rods (5) are perpendicular to each other, and the first support rods (3) are perpendicular to the second support rods (4) and the third support rods (5); Each of the first support rods (3) is provided with at least one fixed hoop (2), and an elastic connector (8) is connected to the fixed hoop (2), and one end of the elastic connector (8) is connected to the fixed hoop (2), and the other end is connected to the first support rod (3).

2. The fixing device according to claim 1, characterized in that A plurality of the first support rods (3) are arranged in layers, with at least two of the first support rods (3) in each layer, and the first support rods (3) in each layer are aligned vertically.

3. The fixing device according to claim 1, characterized in that The fixed clamp (2) comprises a customized clamp (21) and a sliding base (24), wherein the customized clamp (21) and the sliding base (24) are connected via a universal roller (23), and the sliding base (24) is a hollow rectangular parallelepiped structure, wherein the bottom opening of the sliding base (24) is in an inverted U shape, and the inner side of the sliding base (24) is in sliding engagement with the first support rod (3).

4. The fixing device according to claim 3, characterized in that A protective cushion layer (22) is provided on the inner side of the customized clamp (21).

5. The fixing device according to claim 3, characterized in that The customized hoop (21) is a ring structure.

6. The fixing device according to claim 5, characterized in that The customized clamp (21) comprises two semicircular clamps, which are connected and fixed by a fastener (7).

7. A system for laying cables in a serpentine pattern, characterized in that: include: A cable (6) and a fixing device according to any one of claims 1 to 6; Wherein, a plurality of the first support rods (3) are arranged in layers, with at least two of the first support rods (3) in each layer; and the first support rods (3) in each layer are aligned vertically; The fixed clamps (2) provided on a plurality of the first support rods (3) located on the same layer are arranged alternately left and right along the cable laying direction; The cable (6) passes through the fixed clamps (2) that are alternately arranged on the left and right sides, thereby achieving serpentine laying of the cable.

8. A method for laying a cable in a serpentine pattern, characterized in that: The following steps are involved: S1, determine the bending amplitude, laying pitch and spacing between adjacent cables when the cable is laid in a serpentine pattern on a fixed support; S2, providing fixed clamps staggered along the cable laying direction on the fixed bracket according to the bending amplitude, laying pitch and spacing between adjacent cables; S3, pass each cable through each column of staggered fixed clamps to achieve serpentine laying of the cables.

9. The method according to claim 8, characterized in that The step S1 comprises: Determining the bending amplitude according to the expansion and contraction margin of the cable, wherein the bending amplitude represents the unilateral offset of the cable serpentine shape; Determining the laying pitch according to the bending amplitude, wherein the laying pitch represents a vertical distance between adjacent first support rods in the same layer; The distance between adjacent cables is determined according to the number of cables to be laid and the length of the first support rod.

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