Cable support of cable tunnel wire outlet

Abstract

The utility model belongs to the technical field of cable tunnel engineering, and provides a cable bracket of a cable tunnel outlet, which comprises a stand column, a first cross rod, a second cross rod, a hinge mechanism and a stretching mechanism, one end of the first transverse rod is fixedly connected with the stand column through a hinge mechanism. One end of the second cross rod is fixedly connected with the stand column through a stretching mechanism; the hinge mechanism is used for driving the first cross rod to be folded upwards towards the stand column; the stretching mechanism is used for driving the second transverse rod to extend in the direction away from the stand column, so that the projection of the second transverse rod in the vertical direction and the first transverse rod are staggered in the horizontal direction. The hinging mechanism and the stretching mechanism are additionally arranged between the stand columns and the cross rods of the cable support, so that the first cross rod and an upper-layer cable can be driven to be folded towards the inner side of the upper portion, and upward outgoing of a lower-layer cable is avoided; and meanwhile, the second cross rod can be properly stretched towards the outer side, so that a lower-layer cable on the second cross rod can extend out along a widened path during outgoing, and the contact conflict with an upper-layer cable is avoided.

Description

Technical Field

[0001] This application belongs to the field of cable tunnel engineering technology, and specifically relates to a cable support for the outlet of a cable tunnel. Background Technology

[0002] A cable tunnel is an underground passage specifically designed for laying large quantities of cables. Its outlet is a crucial node for connecting cables from inside the tunnel to external equipment, substations, or user terminals. Conventional cable tunnel outlets typically have waterproof cable conduits installed on the tunnel sidewalls, and multiple rows of parallel cable supports are arranged longitudinally inside the tunnel. High-voltage, low-voltage, and control cables are laid in layers on these supports. When a cable needs to exit, it bends upwards from the support location and passes through the conduit in the sidewall to complete the exit.

[0003] This structure could meet basic functions in the early stages when cable laying was small-scale and outgoing line requirements were simple. However, with the growth of urban electricity load and the increasing complexity of cable network layout, its inherent defects have gradually become apparent.

[0004] Traditional cable tunnel outlets employ standardized parallel cable supports with upper and lower supports perfectly aligned horizontally. This results in significant conflicts in the exit space. When lower cables bend upwards to exit, the lateral obstruction of the upper supports necessitates significant bending or detours, causing positional interference with cables already laid on the upper supports. This not only increases the difficulty of cable laying but may also damage the insulation layer due to excessive bending. Furthermore, the upper and lower cables are typically different high- and low-voltage cables. Conflicts between the exit paths of the lower and upper cables can lead to insufficient safety clearance, increasing the risk of electromagnetic interference, insulation breakdown, and other accidents, posing serious safety hazards. Summary of the Invention

[0005] To address the safety hazards caused by cable conflicts and interference between high-voltage and low-voltage cables at traditional cable tunnel outlets due to space constraints, this application provides a cable support for cable tunnel outlets.

[0006] In one embodiment, a cable support for a cable tunnel outlet includes a column, a first crossbar, a second crossbar, a hinge mechanism, and a tensioning mechanism.

[0007] The column is erected on the side wall of the cable tunnel outlet; one end of the first horizontal bar is fixedly connected to the column through a hinge mechanism; one end of the second horizontal bar is fixedly connected to the column through a tension mechanism; at least one second horizontal bar is provided along the main body of the column directly below the first horizontal bar.

[0008] The hinge mechanism is used to pull the first crossbar upward toward the column; the tensioning mechanism is used to pull the second crossbar to extend away from the column, so that the projection of the second crossbar in the vertical direction is misaligned with the first crossbar in the horizontal direction.

[0009] In one design, the column is provided with several assembly joints along the vertical direction. The assembly joints can be used to detachably fix the hinge mechanism, tension mechanism, first crossbar or second crossbar.

[0010] In one embodiment, the hinge mechanism includes two first connecting units and a rotating element with a locking function. The rotating element drives the two first connecting units to rotate within a range of 90° to 180°. The two first connecting units are detachably fixedly connected to the assembly joint and the first crossbar, respectively.

[0011] The locking function of the rotating element can be achieved through a mechanical ratchet and pawl structure, a telescopic pin tumbler lock structure, and a motor-driven start / stop mechanism.

[0012] In one embodiment, the tensioning mechanism includes a telescopic element and two second connecting units that are fixedly connected to both ends of the telescopic element, and the two second connecting units are detachably fixedly connected to the assembly joint and the second crossbar, respectively.

[0013] The telescopic element can be a helical push rod structure, a slide rail structure, a hydraulic push rod structure, or an electric push rod.

[0014] In one embodiment, the second crossbar can also be fixedly connected to the column via a combination of a tensioning mechanism and a hinge mechanism;

[0015] That is, in the same horizontal direction, one end of the second crossbar is detachably fixedly connected to the second connecting unit, the second connecting unit of the tensioning mechanism on the side opposite to the second crossbar is detachably fixedly connected to the first connecting unit, and the first connecting unit of the hinge mechanism on the side opposite to the tensioning mechanism is detachably fixedly connected to the assembly joint.

[0016] In one embodiment, a protective plate is provided at one end of the first horizontal bar near the column. The protective plate is in the shape of an arc plate or a straight plate and is formed by extending vertically from the upper end face of the first horizontal bar.

[0017] In one embodiment, a movable support beam is provided on the lower side of the second crossbar; one end of the movable support beam is hinged to the second crossbar, and the other end of the movable support beam is constructed with a movable joint.

[0018] When the second crossbar extends away from the column under the action of the tensioning mechanism, the operable movable support beam rotates around the hinge point, so that the movable joint moves toward the column and is detachably fixedly connected to the assembly joint.

[0019] In one scheme, at least two cable supports are provided at the cable tunnel outlet along the extension direction of the cable tunnel, and an insulating diaphragm can be stretched between any two adjacent first or second crossbars.

[0020] The beneficial effects of this application are:

[0021] This application adds a hinge mechanism and a tensioning mechanism between the columns and crossbars of a traditional cable support. When the lower-level cable laid on the second crossbar needs to exit, the hinge mechanism can pull the first crossbar and the upper-level cable inward to avoid the lower-level cable exiting upward. On the other hand, the tensioning mechanism can stretch the second crossbar outward appropriately, allowing the lower-level cable on the second crossbar to extend along the widened path when exiting, avoiding contact and conflict with the upper-level cable. The resulting layered staggered layout of the cable support crossbars can create an effective spacing between cables of different layers in the horizontal direction, reducing the interference of high-voltage electromagnetic fields on low-voltage cables when exiting. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a cable support at the outlet of a cable tunnel in one embodiment of this application;

[0024] Figure 2 This is a front view of the cable support at the cable tunnel outlet in one embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the assembly of the cable bracket at the cable tunnel outlet in one embodiment of this application;

[0026] Figure 4 This is a schematic diagram of the operation of the cable support at the cable tunnel outlet in one embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the operation of the cable support at the cable tunnel outlet in one embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the cable tunnel exit path in one embodiment of this application;

[0029] Labels for each item in the figure:

[0030] 1. Column; 11. Assembly joint;

[0031] 2. First crossbar; 21. Guard plate;

[0032] 3. Second crossbar; 31. Movable support beam;

[0033] 4. Hinge mechanism; 41. First connecting unit; 42. Rotating element;

[0034] 5. Tensioning mechanism; 51. Second connecting unit; 52. Telescopic element;

[0035] 6. Cables;

[0036] P is defined as the cable outgoing path; H is defined as the cable laying path. Detailed Implementation

[0037] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application. Similarly, the following examples are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] In this application, describing two components as an assembly structure with opposite structures means that the structural features of the two components are mutually compatible, such as one being a hole and the other a shaft, or one being a bolt and the other a nut, etc.

[0042] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] To address the safety hazards posed by cable conflicts and interference between high-voltage and low-voltage cables at traditional cable tunnel outlets due to space constraints, this application provides a cable support for cable tunnel outlets, with specific embodiments as follows:

[0044] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 6 The cable support at the cable tunnel outlet includes a column 1, a first horizontal bar 2, a second horizontal bar 3, a hinge mechanism 4, and a tensioning mechanism 5.

[0045] In this embodiment, the column 1 serves as the base column of the cable support and is erected on the side wall of the cable tunnel outlet; one end of the first crossbar 2 is fixedly connected to the column 1 via a hinge mechanism 4; one end of the second crossbar 3 is fixedly connected to the column 1 via a tension mechanism 5; at least one second crossbar 3 is provided along the main body of the column 1 directly below the first crossbar 2. The upper layer cable 6 laid on the first crossbar 2 is typically a high-voltage cable, and the lower layer cable 6 laid on each of the second crossbars 3 is typically a low-voltage cable.

[0046] In this embodiment, when the cable needs to exit, it bends upward from the layer where the cable is located. After the exit cable extends to the side wall sleeve above the cable bracket, it passes through the side wall sleeve to complete the exit. If the exit cable is the upper layer cable 6 laid on the first crossbar 2, it can be directly bent upward to extend out. If the exit cable is the lower layer cable 6 laid on the second crossbar 3, the hinge mechanism 4 can be used to drive the first crossbar 2 and the upper layer cable 6 to be appropriately gathered upward towards the column 1, and then bend upward to extend out. And / or the tensioning mechanism 5 can be used to drive the second crossbar 3 and the exit cable to extend away from the column 1, so that the projection of the exit cable on the second crossbar 3 in the vertical direction is misaligned with the first crossbar 2 in the horizontal direction, thereby widening the exit path.

[0047] Therefore, this application adds a hinge mechanism 4 and a tensioning mechanism 5 between the column 1 and the crossbar of a traditional cable support. When the lower cable 6 laid on the second crossbar 3 needs to exit, on the one hand, the hinge mechanism 4 can drive the first crossbar 2 and the upper cable 6 to retract upwards and inwards to avoid the lower cable 6 exiting upwards; on the other hand, the tensioning mechanism 5 can appropriately stretch the second crossbar 3 outwards, so that the lower cable 6 on the second crossbar 3 can extend along the widened path when exiting, avoiding contact and conflict with the upper cable 6. The resulting layered staggered layout of the crossbars of the cable support can make the cables of different layers form an effective spacing in the horizontal direction, reducing the interference of the high-voltage electromagnetic field on the low-voltage cable when exiting.

[0048] In one embodiment, the column 1 is provided with a plurality of assembly joints 11 along the vertical direction. The assembly joints 11 can be detachably fixedly connected to the hinge mechanism 4, the tensioning mechanism 5, the first crossbar 2, or the second crossbar 3. For example, the assembly joints 11 and their corresponding connection structures can be dovetail joints, snap-fit ​​joints, tenon joints, bolts, or screws. By providing a plurality of assembly joints 11 on the column 1, the number of layers of cables laid on the cable support and the spacing between each layer can be flexibly adjusted, while improving the versatility and expandability of the cable support.

[0049] In one embodiment, please refer to Figures 1 to 4 The hinge mechanism 4 includes two first connecting units 41 and a rotating element 42 with a locking function. The rotating element 42 drives the two first connecting units 41 to rotate within a range of 90° to 180°, ensuring that the first crossbar 2 remains relatively perpendicular to the column 1 when the hinge mechanism 4 does not drive the first crossbar 2 to retract, thus providing stable support for the upper cable 6 laid on the first crossbar 2, and also meeting the rotation range requirements for the retraction action towards the column 1. The two first connecting units 41 are detachably fixedly connected to the assembly joint and the first crossbar 2, respectively.

[0050] In this embodiment, the locking function of the rotating element 42 can be achieved by a mechanical ratchet and pawl structure, a telescopic pin tumbler lock structure, and a motor-driven start / stop mechanism; one end of the first connecting unit 41 and the first crossbar 2 are both constructed with a connecting structure corresponding to the assembly joint 11, wherein the two first connecting units 41 of the rotating element 42 are assembly structures with opposite structures.

[0051] In one embodiment, please refer to Figures 1 to 4 The tensioning mechanism 5 includes a telescopic element 52 and two second connecting units 51 fixedly connected to both ends of the telescopic element 52. The two second connecting units 51 are detachably fixedly connected to the assembly joint and the second crossbar 3. The telescopic element 52 can be a helical push rod structure, a slide rail structure, a hydraulic push rod structure, or an electric push rod. One end of each of the second connecting units 51 and the second crossbar 3 is constructed with a connection structure corresponding to the assembly joint 11, and the two second connecting units 51 of the telescopic element 52 are assembly structures with opposite structures.

[0052] In one embodiment, please refer to Figure 5 The second crossbar 3 can also be fixedly connected to the column 1 through a combination of tensioning mechanism 5 and hinge mechanism 4; that is, in the same horizontal direction, one end of the second crossbar 3 is detachably fixedly connected to the second connecting unit 51, the second connecting unit 51 on the side of tensioning mechanism 5 away from the second crossbar 3 is detachably fixedly connected to the first connecting unit 41, and the first connecting unit 41 on the side of hinge mechanism 4 away from tensioning mechanism 5 is detachably fixedly connected to the assembly joint, so that the second crossbar 3 can both retract upward and inward to avoid obstacles, and can also extend and retract in the horizontal direction to adapt to more complex cable tunnel cable laying and outgoing line requirements.

[0053] In one embodiment, please refer to Figure 4 and Figure 5 A protective plate 21 is provided at one end of the first crossbar 2 near the column 1. The protective plate 21 is an arc-shaped or straight plate that extends vertically from the upper end face of the first crossbar 2. By providing the protective plate 21, the upper cable 6 laid on the first crossbar 2 can be supported and constrained when the hinge mechanism 4 drives the first crossbar 2 to rotate and retract, so as to prevent the upper cable 6 from falling out of the cable bracket due to tilting.

[0054] In one embodiment, please refer to Figure 4 and Figure 5A movable support beam 31 is provided on the lower side of the second crossbar 3. One end of the movable support beam 31 is hinged to the second crossbar 3, and the other end of the movable support beam 31 is constructed with a movable joint. When the second crossbar 3 completes its extension action away from the column 1 under the drive of the tensioning mechanism 5, the movable support beam 31 can be rotated around the hinge point, so that the movable joint moves toward the column 1 and is detachably fixedly connected to the assembly joint 11. Since the second crossbar 3 carries the laid lower layer cable 6 outward in the horizontal direction under the action of the tensioning mechanism 5, the torque between the second crossbar 3 and the column 1 increases, increasing the support load of the second crossbar 3 on the cable. By adjusting the connection and assembly of the movable support beam 31 with the column 1, a triangular support frame can be provided for the extended second crossbar, ensuring the second crossbar's support capacity for the cable.

[0055] In one embodiment, at least two cable supports are provided at the cable tunnel outlet along the extension direction of the cable tunnel. An insulating diaphragm can be stretched between any two adjacent first crossbars 2 or second crossbars 3 to help block the outgoing cable from high-voltage cables that are too close to each other when passing the first crossbar 2 or second crossbar 3 on the outgoing path, thereby preventing the strong electromagnetic field generated by the high-voltage cable during operation from interfering with the signal transmission of the outgoing cable. For example, the insulating diaphragm can be made of materials such as glass fiber reinforced plastic, carbon fiber reinforced plastic, polyvinyl chloride, or cross-linked polyethylene.

[0056] The above are merely optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cable support for a cable tunnel outlet, characterized in that, It includes a column, a first crossbar, a second crossbar, a hinge mechanism, and a tensioning mechanism; The column is erected on the side wall of the cable tunnel outlet; one end of the first crossbar is fixedly connected to the column through the hinge mechanism; one end of the second crossbar is fixedly connected to the column through the tension mechanism; at least one second crossbar is provided along the main body of the column directly below the first crossbar; The hinge mechanism is used to drive the first crossbar to retract upward toward the column; the tensioning mechanism is used to drive the second crossbar to extend away from the column, so that the projection of the second crossbar in the vertical direction is misaligned with the first crossbar in the horizontal direction.

2. The cable support at the cable tunnel outlet according to claim 1, characterized in that, Each column is provided with several assembly joints along the vertical direction. The assembly joints can be used to detachably fix the hinge mechanism, the tension mechanism, the first crossbar, or the second crossbar.

3. The cable support at the cable tunnel outlet according to claim 2, characterized in that, The hinge mechanism includes two first connecting units and a rotating element with a locking function. The rotating element drives the two first connecting units to rotate within a range of 90° to 180°. The two first connecting units are detachably fixedly connected to the assembly joint and the first crossbar, respectively. The locking function of the rotating element can be achieved through a mechanical ratchet and pawl structure, a telescopic pin tumbler lock structure, or a motor-driven start / stop mechanism.

4. The cable support at the cable tunnel outlet according to claim 3, characterized in that, The tensioning mechanism includes a telescopic element and two second connecting units that are fixedly connected to both ends of the telescopic element. The two second connecting units are detachably fixedly connected to the assembly joint and the second crossbar, respectively. The telescopic element can be a helical push rod structure, a slide rail structure, a hydraulic push rod structure, or an electric push rod.

5. The cable support at the cable tunnel outlet according to claim 4, characterized in that, The second crossbar can also be fixedly connected to the column through a combination of the tensioning mechanism and the hinge mechanism; That is, in the same horizontal direction, one end of the second crossbar is detachably fixedly connected to the second connecting unit, the second connecting unit of the tensioning mechanism on the side opposite to the second crossbar is detachably fixedly connected to the first connecting unit, and the first connecting unit of the hinge mechanism on the side opposite to the tensioning mechanism is detachably fixedly connected to the assembly joint.

6. The cable support at the cable tunnel outlet according to claim 1, characterized in that, A protective plate is provided at one end of the first crossbar near the column; the protective plate is in the shape of an arc plate or a straight plate and is formed by extending the upper end surface of the first crossbar in the vertical direction.

7. The cable support at the cable tunnel outlet according to claim 2, characterized in that, A movable support beam is provided on the lower side of the second crossbar; one end of the movable support beam is hinged to the second crossbar, and the other end of the movable support beam is provided with a movable joint; When the second crossbar extends away from the column under the action of the tensioning mechanism, the movable support beam can be rotated around the hinge point, so that the movable joint moves toward the column and is detachably fixedly connected to the assembly joint.

8. The cable support at the outlet of a cable tunnel according to any one of claims 1-7, characterized in that, At least two cable supports are provided at the cable tunnel outlet along the extension direction of the cable tunnel, and an insulating diaphragm can be stretched between any two adjacent first or second crossbars.

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