Horizontal b-type single loop cable tray well

Abstract

The utility model provides a horizontal B type single loop cable well, including cable well main part structure, a plurality of cable support are arranged at equal distance in the cable well main part structure inboard, and cable passes through cable support setting through cable clamp, the section of cable well main part structure is B character shape, the utility model discloses can realize using two semicircular structure of continuity, to reduce the transverse space requirement of cable well, effectively reduce the transverse span of cable well and adapt to the narrow space of city road underground.

Description

Technical Field

[0001] This utility model relates to the field of power cable laying technology, and in particular to a horizontal B-type single-circuit cable reel well. Background Technology

[0002] In urban power grid construction, cables with voltage levels of 220kV and above have large cross-sections, require large turning radii, and have long terminal heads and intermediate joints, necessitating the provision of longer cable lengths during secondary joint fabrication. These characteristics significantly increase the required lateral span space for cable manholes if a traditional semi-circular structure is used. However, urban roads have dense underground pipelines, and lateral space resources are very limited, making this large-span cable manhole structure unsuitable for the actual conditions of urban roads. Furthermore, existing cable fixing devices in cable manhole structures often suffer from inconvenient installation and unsatisfactory fixing effects, easily causing cable displacement or damage during cable laying. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide a horizontal B-type single-circuit cable manhole that can adopt two continuous semi-circular structures to reduce the horizontal space requirements of the cable manhole, effectively reduce the horizontal span of the cable manhole, and adapt to the narrow underground space of urban roads.

[0004] This utility model is implemented by the following method: a horizontal B-type single-circuit cable reel well, including a main structure of the cable reel well, wherein multiple cable supports are equally spaced on the inner side of the main structure of the cable reel well, and the cable passes through the cable supports via cable clamps. The cross-section of the main structure of the cable reel well is B-shaped.

[0005] Furthermore, the cable clamp includes a supporting base plate, with mounting openings at both the left and right ends of the supporting base plate. The mounting openings are connected and fixed to the cable bracket by a first bolt. Arc-shaped blocks are provided at both the left and right ends of the upper surface of the supporting base plate. A fixing frame is provided between the arc-shaped blocks at the left and right ends by a second bolt. An arc-shaped groove that mates with the cable is provided on the bottom surface of the fixing frame. A screw is spirally embedded on the upper surface of the fixing frame. An arc-shaped clamping block that mates with the arc-shaped groove is provided at the end of the screw.

[0006] The beneficial effects of this utility model are as follows: This utility model includes a main structure of a cable tray well, and multiple cable supports are equally spaced on the inner side of the main structure of the cable tray well. The cable passes through the cable supports via cable clamps. The cross-section of the main structure of the cable tray well is B-shaped. The B-shaped cross-section structure reduces the lateral space occupation. Combined with the equally spaced cable supports, the cable can be arranged compactly. This effectively reduces the lateral span of the cable tray well, adapts to the narrow underground space of urban roads, and optimizes the cable layout structure, thereby improving space utilization. Attached Figure Description

[0007] Fig. 1 This is a schematic diagram of the structure of this utility model.

[0008] Fig. 2 This is the front view of the present invention.

[0009] Fig. 3 This is a schematic diagram of the cable clamp structure. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] Please see Figs. 1 to 3 As shown, this utility model provides an embodiment: a horizontal B-type single-circuit cable manhole, including a cable manhole main structure 1. Multiple cable supports 2 are evenly spaced on the inner side of the cable manhole main structure 1. Cables 3 pass through the cable supports 2 via cable clamps 4. The cross-section of the cable manhole main structure 1 is B-shaped. Compared to conventional semi-circular cable manholes, this design reduces the lateral space occupied by the channel, making it more versatile. The use of two continuous semi-circular structures reduces the lateral space requirements of the cable manhole, making it suitable for situations where there are many existing pipelines and limited lateral space on urban roads. The cross-section of the cable manhole main structure (1) is B-shaped, consisting of two symmetrical semi-circular cavities connected by an intermediate transition section, forming a continuous symmetrical B-shaped space.

[0012] The main structure of the cable tray well refers to the core structure that carries the cable arrangement. It can be formed by cast-in-place reinforced concrete, and its cross-sectional shape is B-shaped, consisting of two semi-circular areas and a central rectangular area. This cross-sectional shape can reduce redundant space on both sides and concentrate the cable arrangement.

[0013] Cable supports are supporting components for fixing cables. They can be formed by welding metal angle steel and are distributed at equal intervals along the inner wall of the well body. The spacing can be adjusted according to the cable diameter. Equal distribution helps to evenly distribute the cable load and facilitates standardized installation.

[0014] Cable clamps are devices used to fix the position of cables. They can be modular clamping structures, fixed to the cable support by bolts. This device can accommodate cables of different diameters and prevent cable displacement.

[0015] Specifically, the main structure of the cable tray well adopts a B-shaped cross-section, with semi-circular areas on both sides to accommodate cable bends, and a rectangular area in the middle for straight cable sections. Cable supports are arranged at equal intervals along the inner wall of the well, and the cables are fixed to the supports by clamps, forming a single-circuit horizontal arrangement. The asymmetrical design of the B-shaped cross-section concentrates the cables in the middle area, reducing the space occupied on both sides, thus reducing the lateral span by about 30% compared to the traditional semi-circular structure for the same cable capacity.

[0016] Compared to existing technologies, traditional semi-circular cable manholes, due to their cross-sectional shape limitations, require cables to be evenly distributed along the curved surface, resulting in low space utilization on both sides. This solution optimizes the cable layout area through a B-shaped cross-section, effectively reducing lateral space requirements while maintaining the same cable capacity, making it particularly suitable for urban road conditions where lateral space is limited.

[0017] Through the above technical solution, this application can realize the cable coiling operation of large cross-section cables in narrow spaces, avoid spatial conflicts with existing pipelines, and reduce earthwork excavation and construction costs.

[0018] Compared to traditional semi-circular cable reel wells (which require a single large-diameter space), this design divides the cable reel area into two parallel semi-circular cavities, reducing the overall width by sharing a central transition section. Actual measurements show that, for the same cable capacity, lateral space occupancy is reduced by 25%-30%, making it particularly suitable for urban roads with limited lateral space.

[0019] Please continue reading. Fig. 3 As shown, in one embodiment of the present invention, the cable clamp 4 includes a supporting base plate 41. Mounting openings 42 are provided at both the left and right ends of the supporting base plate 41. The mounting openings 42 are connected and fixed to the cable bracket 2 by a first bolt 43. Arc-shaped blocks 44 are provided at both the left and right ends of the upper surface of the supporting base plate 41. A fixing frame 46 is provided between the arc-shaped blocks 44 at the left and right ends by a second bolt 45. An arc-shaped groove 47 that mates with the cable is provided on the bottom inner surface of the fixing frame 46. A screw 48 is spirally embedded on the upper surface of the fixing frame 46. An arc-shaped clamping block 49 that mates with the arc-shaped groove is provided at the end of the screw 48.

[0020] The supporting base plate refers to the plate-shaped component that supports the main structure of the cable clamp. It can be made of steel plate or alloy material and is used to provide an installation interface and distribute the load.

[0021] The mounting port refers to the hole opened on both sides of the support base plate. Specifically, it can be a circular or long through hole, used to form a detachable connection with the cable bracket by bolts.

[0022] Arc-shaped blocks refer to the arc-shaped protrusions on both sides of the upper surface of the support base plate. They can be made by welding or casting processes and are used to support and fix the frame and limit its displacement.

[0023] A fixed frame is a U-shaped structure that spans between two arc-shaped blocks. It can be made by stamping or bending processes and is used to wrap cables and form a clamping space.

[0024] Arc-shaped grooves refer to the recessed structures on the inner bottom surface of the fixed frame that match the outer contour of the cable. They can be achieved by machining or molding to increase the contact area and reduce local pressure.

[0025] The screw is a threaded rod that passes through the top of the fixed frame. It can be made of stainless steel and is used to adjust the pressure between the clamping block and the cable.

[0026] The arc-shaped clamping block refers to the semi-circular component connected to the end of the screw. It can be made of a metal substrate covered with rubber or polyurethane, and is used to adapt to the surface shape of the cable and provide anti-slip clamping force.

[0027] Specifically, the mounting port secures the support base plate to the cable bracket using the first bolt, forming a stable foundation connection. The arc-shaped block is connected to the fixing frame using the second bolt, allowing the fixing frame to be finely adjusted in angle around the arc-shaped block. The cable is placed within the arc-shaped groove of the fixing frame, and a rotating screw drives the arc-shaped clamping block downwards, evenly clamping the cable between the arc-shaped groove and the clamping block. This structure allows the cable to retain a certain amount of slack after fixing, avoiding insufficient bending radius due to rigid constraints.

[0028] Compared to existing technologies, traditional cable clamps typically employ a single, fixed structure, which cannot adjust the clamping space according to the cable diameter, resulting in a greater lateral span required for the installation of large-section cables. This solution, however, utilizes a split-type fixing frame with adjustable screws, enabling it to accommodate the installation needs of cables of different sizes within a limited space, while reducing reliance on lateral span.

[0029] Through the above technical solution, this application solves the problem of insufficient lateral space caused by the large turning radius of cables in existing semi-circular cable reel wells. The adjustable clamping structure enables compact fixing of cables, reducing the space requirements for the layout of underground pipelines in urban roads.

[0030] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A horizontal B-type single loop coiled tubing well characterized by: The system includes a main structure for a cable tray well, on which multiple cable supports are equally spaced on the inner side. Cables pass through the cable supports via cable clamps. The cross-section of the main structure for the cable tray well is B-shaped.

2. A horizontal B-type single loop disc-cable well according to claim 1, characterized in that: The cable clamp includes a support base plate with mounting openings at both the left and right ends. The mounting openings are connected and fixed to the cable bracket by a first bolt. Arc-shaped blocks are provided at both the left and right ends of the upper surface of the support base plate. A fixing frame is provided between the arc-shaped blocks at the left and right ends by a second bolt. An arc-shaped groove that mates with the cable is provided on the bottom surface of the fixing frame. A screw is spirally embedded on the upper surface of the fixing frame. An arc-shaped clamping block that mates with the arc-shaped groove is provided at the end of the screw.

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