Bridge structure of wire duct in electrical construction

Abstract

The application discloses a kind of overbridge structures of line duct in electrical construction, comprising: fixed groove, horizontal overhead setting, and two ends are used to connect line duct;Ramp line duct, rotationally connected in the upper part of the middle position of fixed groove, and supply the line of lifting and set up;Horizontal groove, rotationally connected to the upper end of ramp line duct, and parallel with fixed groove;Elbow line duct, set to the end of horizontal groove away from ramp line duct;Cover, buckled in the upper end opening position of fixed groove, ramp line duct, horizontal groove and elbow line duct.The application forms independent lifting turning path by ramp line duct, horizontal groove and elbow line duct, so that the line that needs to cross obstacle or avoid adjacent line duct can rise from the middle position of fixed groove, without additional occupation of larger transverse installation space, and the rotationally connected between ramp line duct and fixed groove, between horizontal groove and ramp line duct, improve the adaptability of overbridge structure to different construction scenes.

Description

Technical Field

[0001] This invention relates to the field of electrical construction, and in particular to a bridge structure for cable trays in electrical construction. Background Technology

[0002] Cable trays are electrical tools fixed to walls, ceilings, or floors, primarily used to neatly organize and secure power cords, data cables, control cables, and other wires. By storing and protecting cables in cable trays, problems such as exposed cables, trampling, wear and tear, and cluttered construction sites can be reduced, making subsequent inspection and maintenance of electrical circuits more convenient.

[0003] In building electrical engineering construction, obstacles such as air ducts, water pipes, drainage ditches, structural beams, equipment foundations, or adjacent lines are often present on site. To allow lines to bypass these obstacles, it is usually necessary to set up ramps, horizontal transition sections, and bends in the cable trays, raising parts of the lines from their original horizontal laying path before turning or crossing them.

[0004] In current construction, a combination of tee joints, ramp troughs, and elbow troughs is often used to install cable trays at bridge locations. However, when the spacing between two or more cable trays is small, or when the on-site installation space is limited, the installation width required for tee joints and ramp troughs is large, which can easily interfere with adjacent cable trays or obstacles, making it difficult to lay out the bridge structure and reducing the adaptability of cable tray layout. This needs to be improved. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a bridging structure for cable trays in electrical construction, solving the problems of inconvenient installation, difficulty in adapting angles, and easy generation of protective gaps at the connection points of conventional tee joints and ramp cable trays when the spacing between adjacent cable trays is small or the site space is limited.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a bridge structure for cable trays in electrical construction, comprising: Fixed trough, horizontally overhead, with both ends for connecting cable troughs, and for horizontally laid cables to pass through and be laid. The ramp cable tray is rotatably connected to the upper part of the middle position of the fixed tray, and is used for laying raised cables. A horizontal groove is rotatably connected to the upper end of the climbing groove and is parallel to the fixed groove; An elbow-shaped cable trough is provided at the end of the horizontal trough that is away from the inclined cable trough; The cover is fastened to the upper opening of the fixing groove, the climbing groove, the horizontal groove, and the elbow groove.

[0007] In a preferred embodiment, the present invention can be further configured such that: a sealing mechanism is provided at the connection position between the fixed groove and the climbing groove; the sealing mechanism includes a sealing plate, a screw, and a nut; the sealing plate is disposed on the inner side of the climbing groove and is used to slide into the fixed groove and seal the angular gap between the fixed groove and the climbing groove; the screw is disposed on the upper outer wall of the sealing plate; the climbing groove is provided with a strip-shaped hole arranged along its length direction for the screw to slide through; and the nut is threadedly connected to the screw and presses against the outer wall of the climbing groove.

[0008] In a preferred embodiment, the present invention can be further configured such that: an elongated locking block is sleeved on the screw, the locking block is used to be embedded in the elongated hole, the locking block is provided with locking teeth, and the inner wall of the elongated hole is provided with a locking groove for the locking teeth to be embedded.

[0009] In a preferred embodiment, the present invention may be further configured such that a locking mechanism is provided between the fixed groove and the climbing groove, the locking mechanism comprising a threaded tube and a pair of threaded rods, the pair of threaded rods being threadedly connected to both ends of the threaded tube, and the pair of threaded rods being rotatably connected to the outer walls of the fixed groove and the climbing groove, respectively.

[0010] In a preferred embodiment, the present invention may be further configured such that: a baffle plate is provided at the connection position of the climbing groove and the horizontal groove, the baffle plate is arranged in a fan shape on both sides of the climbing groove, and covers the outer wall of the horizontal groove, and covers the angular gap between the climbing groove and the horizontal groove.

[0011] In a preferred embodiment, the present invention may be further configured such that: a locking pin is threaded onto the horizontal groove to press against the outer wall of the baffle plate, and the baffle plate is provided with an arc-shaped hole through which the locking pin passes.

[0012] In a preferred embodiment, the present invention can be further configured such that: a fixing mechanism is provided between the climbing groove and the horizontal groove, the fixing mechanism including a fixing plate, a sliding plate, a tie rod and a fixing pin, the fixing plate is disposed on the lower end face of the climbing groove, the sliding plate is slidably connected to the lower end face of the horizontal groove, the tie rod is rotatably connected between the fixing plate and the sliding plate, and the fixing pin is threadedly connected to the sliding plate and pressed against the lower end face of the horizontal groove.

[0013] In a preferred embodiment, the present invention may be further configured such that a rubber pad is provided at the connection position of the climbing groove and the horizontal groove, and the rubber pad covers the rotational position of both.

[0014] In a preferred embodiment, the invention may be further configured such that: the lower end of the climbing trough is rotatably connected to a guide tube, the guide tube being used by the raised line to cross over.

[0015] In summary, the present invention has the following beneficial effects: 1. The fixed slot retains the conventional laying path of the horizontal line, and the climbing slot, horizontal slot and the bend slot form an independent lifting and turning path. The line that needs to cross obstacles or avoid adjacent slots can rise from the middle position of the fixed slot without occupying a large additional lateral installation space. At the same time, the climbing slot and the fixed slot, and the horizontal slot and the climbing slot are all rotatable connections, which can adjust the tilt angle according to the height of the obstacles and the bending radius of the line, thereby improving the adaptability of the bridge structure to different construction scenarios. 2. By setting up a sealing mechanism, the gap between the ramp trough and the fixed trough is covered, and the gap is compensated and blocked, thereby reducing the risk of dust, debris or construction debris entering the trough. 3. By setting up a shielding plate to cover the gap between the climbing cable trough and the horizontal trough, the exposed cables from the side can be reduced, and the appearance continuity of the bridge structure can be improved, making the transition between the climbing section and the horizontal section more complete. 4. By installing rubber pads to cover the gaps at the rotating joints and providing a flexible contact surface when the cable passes through the rotating position, the risk of the cable sheath being worn by the metal edges is reduced; 5. By setting up guide tubes to provide rolling support and steering guidance for the line, the line gradually transitions from a horizontal state to an upward state, reducing friction and local stress concentration at bends and helping to protect the cable insulation layer. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an embodiment; Figure 2 This is a schematic diagram showing the connection relationship between the fixed groove and the ramp groove in the embodiment; Figure 3 This is a schematic diagram of the climbing trough structure in an embodiment; Figure 4 This is a schematic diagram illustrating the connection relationship between the ramp groove and the horizontal groove in an embodiment.

[0017] Reference numerals: 1. Fixing groove; 2. Inclined groove; 21. Rubber pad; 22. Guide tube; 3. Horizontal groove; 4. Elbow groove; 5. Cover; 6. Sealing mechanism; 61. Sealing plate; 62. Screw; 63. Nut; 64. Strip hole; 65. Locking block; 66. Locking tooth; 67. Locking groove; 7. Locking mechanism; 71. Threaded tube; 72. Threaded rod; 8. Baffle plate; 81. Locking pin; 82. Arc hole; 9. Fixing mechanism; 91. Fixing plate; 92. Sliding plate; 93. Diagonal tie rod; 94. Fixing pin. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, a bridge structure for cable trays in electrical construction includes a fixed tray 1, an inclined cable tray 2, a horizontal tray 3, an elbow cable tray 4, and a cover 5.

[0020] like Figure 1 As shown, the fixed trough 1 can be made of metal cable trays, galvanized steel plate cable trays, aluminum alloy cable trays, or flame-retardant engineering plastic cable trays, and its cross-section can be a trough-shaped structure with an open top. The two ends of the fixed trough 1 are used to connect with existing cable trays or cable trays to be laid, so that ordinary horizontal lines can directly pass through the fixed trough 1 and continue to be laid along the ground.

[0021] like Figure 1 As shown, the ramp trough 2 is rotatably connected above the middle position of the fixed trough 1. This rotatable connection can be achieved through a hinge, pivot, pivot seat, or pin structure, allowing the ramp trough 2 to rotate around the connection position of the fixed trough 1, and enabling the line that needs to be lifted to cross obstacles to enter the ramp path at this position.

[0022] Therefore, during on-site installation, construction personnel can adjust the tilt angle of the ramp cable tray 2 according to the height of the obstacle, the distance between adjacent cable trays, the cable specifications, and the allowable bending radius. Thus, when the distance between two adjacent cable trays is small and a conventional tee connector cannot be placed, the ramp cable tray 2 can be directly lifted out from above the fixed tray 1, thereby reducing the lateral space occupied.

[0023] like Figure 1 As shown, the horizontal trough 3 is rotatably connected to the upper end of the ramp cable trough 2 and is generally parallel to the fixed trough 1 in use. The horizontal trough 3 is used to keep the raised cable horizontally laid at a higher position, thereby crossing obstacles such as air ducts, water pipes, trenches, adjacent cable troughs, or equipment bases.

[0024] like Figure 1 As shown, the elbow trough 4 is set at the end of the horizontal trough 3 away from the climbing trough 2. The elbow trough 4 can be set as a horizontal 90-degree elbow, an arc elbow or other turning trough according to the route direction, so as to guide the route after crossing to the target direction.

[0025] like Figure 1 As shown, the cover 5 is fastened to the upper opening of the fixed groove 1, the inclined groove 2, the horizontal groove 3, and the elbow groove 4. The cover 5 can be connected to each groove body by clips, screws, latches, or elastic clips. After the cable laying is completed, the cover 5 can close the upper opening of the groove body to prevent dust, mortar, debris, or external trampling from affecting the cable. For maintenance scenarios, the cover 5 is detachable, making it easy to open and inspect the cable status or add or remove lines later.

[0026] Therefore, during construction, the fixed groove 1 can be fixed to the ground or cable tray support surface first, and then the two ends of the fixed groove 1 can be connected to the corresponding cable trays according to the existing cable tray direction. Next, the ramp cable tray 2 is rotated to ensure its upper height meets the requirements for the line to cross obstacles. Then, the horizontal groove 3 is rotated to keep it parallel or nearly horizontal to the fixed groove 1. Finally, the elbow cable tray 4 is connected and the line is laid. Since both the ramp cable tray 2 and the horizontal groove 3 are adjustable, the same specifications of the bridge structure can adapt to obstacles of different heights, reducing on-site cutting and temporary splicing.

[0027] like Figure 2 , Figure 3 As shown, a sealing mechanism 6 is provided at the connection position between the fixed groove 1 and the climbing groove 2. The sealing mechanism 6 includes a sealing plate 61, a screw 62 and a nut 63.

[0028] like Figure 2 , Figure 3 As shown, the sealing plate 61 is disposed on the inner side of the climbing groove 2 and is used to slide into the fixed groove 1 to seal the angular gap between the fixed groove 1 and the climbing groove 2. A screw 62 is disposed on the upper outer wall of the sealing plate 61. The climbing groove 2 has a strip-shaped hole 64 arranged along its length for the screw 62 to slide through. A nut 63 is threadedly connected to the screw 62 and presses against the outer wall of the climbing groove 2.

[0029] When it is necessary to seal the angular gap at the rotatable connection between the ramp groove 2 and the fixed groove 1, loosen the nut 63 and push the screw 62 along the strip hole 64, which will cause the sealing plate 61 to slide. After the sealing plate 61 slides to a position that can cover the angular gap, tighten the nut 63 so that the nut 63 presses against the outer wall of the ramp groove 2, thereby fixing the sealing plate 61 in the current position.

[0030] Because the sealing plate 61 is not a single, fixed-size blocking component, but rather its extension length can change according to the slope angle. When the slope angle is small, the gap between the fixing groove 1 and the slope groove 2 is relatively small, and the sealing plate 61 can extend slightly into the fixing groove 1. When the slope angle is large, the sealing plate 61 can slide further to cover a larger angle gap, thereby improving the compatibility between the protective structure and the angle adjustment structure.

[0031] like Figure 2 , Figure 3 As shown, a long strip-shaped locking block 65 is fitted on the screw 62. The locking block 65 is used to embed into the strip-shaped hole 64. The locking block 65 is provided with locking teeth 66, and the inner wall of the strip-shaped hole 64 is provided with a locking groove 67 for the locking teeth 66 to be embedded.

[0032] Therefore, after the position of the screw 62 is adjusted, the locking block 65 is fitted onto the screw 62 and embedded in the strip hole 64. At this time, the locking teeth 66 are embedded in the locking groove 67, thereby fixing the sealing plate 61, reducing the risk of loosening caused by relying solely on friction to lock, improving the stability of the bridge structure during long-term use, and making the sealing plate 61 less prone to slippage when subjected to cable dragging or construction vibration.

[0033] like Figure 2 As shown, a locking mechanism 7 is provided between the fixed groove 1 and the ramp groove 2. The locking mechanism 7 includes a threaded tube 71 and a pair of threaded rods 72. The pair of threaded rods 72 are respectively connected to the fixed groove 1 and the ramp groove 2, and are both threadedly connected to the threaded tube 71. The threaded tube 71 may be provided with a screwing part, a hexagonal outer wall, or anti-slip texture, so that construction personnel can rotate it by hand or wrench.

[0034] Therefore, when the threaded tube 71 is rotated, a pair of threaded rods 72 extend or retract relative to the threaded tube 71, thereby changing the tension distance between the outer walls of the fixed groove 1 and the ramp groove 2. Since the fixed groove 1 is usually fixed to the ground or foundation surface, the change in the length of the threaded rods 72 will cause the ramp groove 2 to rotate around its lower end, achieving fine-tuning of the angle. After adjustment, the threaded pair between the threaded tube 71 and the threaded rods 72 provides support and locks the ramp groove 2, keeping the ramp groove 2 at a predetermined angle.

[0035] like Figure 4 As shown, a shielding plate 8 is installed at the connection point of the climbing trough 2 and the horizontal trough 3. The shielding plate 8 is arranged in a fan shape on both sides of the climbing trough 2 and covers the outer wall of the horizontal trough 3. Since the relative position of the sides of the horizontal trough 3 changes when it rotates relative to the climbing trough 2, the fan-shaped shielding plate 8 can continuously cover the side gap at the connection point within a large angle range.

[0036] The shielding plate 8 can be integrally formed with the ramp cable tray 2, or it can be fixed to the outside of the ramp cable tray 2 by welding, riveting, or screwing. The edges of the shielding plate 8 can be provided with flanges or rounded corners to avoid cutting the cable sheath or the hands of construction workers. After the shielding plate 8 covers the side wall of the horizontal tray 3, it can form an outer protective surface, making the transition position of the cable tray more visually continuous and reducing side exposure and dust accumulation.

[0037] like Figure 4 As shown, a locking pin 81 is threaded onto the horizontal groove 3, and an arc-shaped hole 82 is provided on the baffle plate 8. After the locking pin 81 passes through the arc-shaped hole 82, it presses against the outer wall of the baffle plate 8.

[0038] When the horizontal groove 3 rotates relative to the inclined groove 2, the locking pin 81 can move along the arc-shaped hole 82, thus providing clearance for angle adjustment. After adjustment, tightening the locking pin 81 will press the baffle plate 8, keeping the inclined groove 2 and the horizontal groove 3 at a relative angle.

[0039] like Figure 4 As shown, a fixing mechanism 9 is provided between the climbing groove 2 and the horizontal groove 3. The fixing mechanism 9 includes a fixing plate 91, a sliding plate 92, a tie rod 93, and a fixing pin 94.

[0040] like Figure 4 As shown, the fixed plate 91 is disposed on the lower end face of the climbing groove 2, the sliding plate 92 is slidably connected to the lower end face of the horizontal groove 3, and the diagonal tie rod 93 is rotatably connected between the fixed plate 91 and the sliding plate 92. The fixing pin 94 is threadedly connected to the sliding plate 92 and pressed against the lower end face of the horizontal groove 3.

[0041] Therefore, when the sliding plate 92 moves along the lower end face of the horizontal groove 3, the angle between the diagonal tie rod 93 and the horizontal groove 3 changes, thereby changing the position of the bracing on the horizontal groove 3.

[0042] When adjusting the angle of the horizontal groove 3, first loosen the fixing pin 94 to allow the sliding plate 92 to slide along the lower end face of the horizontal groove 3. After the horizontal groove 3 is adjusted to the predetermined height and direction, move the sliding plate 92 to position the diagonal tie rod 93 at a suitable support angle, and then tighten the fixing pin 94 to press the fixing pin 94 against the lower end face of the horizontal groove 3. At this time, the fixing plate 91, the sliding plate 92, and the diagonal tie rod 93 form a triangular support relationship, improving the stability of the connection position between the climbing groove 2 and the horizontal groove 3.

[0043] like Figure 2 As shown, a rubber pad 21 is provided at the connection point between the ramp cable tray 2 and the horizontal cable tray 3. The rubber pad 21 covers the rotational position of both and can be configured as a sheet, strip, or arc-shaped cover structure. The rubber pad 21 can both cover the gap at the rotational connection and provide a flexible contact surface for the cable at the corner.

[0044] When the cable enters the horizontal trough from the inclined trough 2, the cable changes direction at this position. If there are sharp metal corners at the rotating connection point, the cable sheath is easily abraded. Covering the rotating position with rubber pad 21 reduces direct contact between the cable and metal edges, lowering the risk of scratching the insulation layer. Rubber pad 21 also absorbs minor vibrations, reducing noise generated by cable movement.

[0045] like Figure 2 As shown, a guide tube 22 is horizontally rotatably connected to the lower end of the ramp trough 2. The guide tube 22 can be a round tube, a roller, or a rotating sleeve with a smooth outer surface. When the cable that needs to be raised enters the ramp trough 2 from the fixed trough 1, the cable first crosses the guide tube 22 and then enters the interior of the ramp trough 2.

[0046] The guide tube 22 can transform the sliding friction of the cable into rolling contact, reducing the resistance of cable pulling. For thicker power cables or multiple cables bundled together, the guide tube 22 can reduce the bending angle at the cable lifting point, preventing the cable from being subjected to concentrated force at the edge of the fixing groove 1, thereby improving the smoothness of the cable pulling construction and the cable protection effect.

[0047] The installation and use process of the bridge structure in this embodiment includes the following steps: First, determine the installation position of the fixing groove 1 based on the location of the obstacle and the route of the line, and set the fixing groove 1 in the air, connecting both ends of the fixing groove 1 with the conventional cable trough. Second, adjust the ramp cable trough 2 to an angle that can overcome the obstacle, and initially fix it using the locking mechanism 7.

[0048] Next, the horizontal groove 3 is adjusted to a position parallel to the fixed groove 1 or to meet the design direction. The angle gap between the climbing groove 2 and the horizontal groove 3 is blocked by the baffle plate 8, and the horizontal groove 3 is locked by the fixing mechanism 9.

[0049] Next, move the sealing plate 61 to a position that can cover the angular gap between the fixed groove 1 and the ramp groove 2 and lock it. Then, lay the horizontal line and the raised line, so that the horizontal line extends through the fixed groove 1, and the raised line passes through the ramp groove 2, the horizontal groove 3 and the bend groove 4 in sequence. Finally, fasten the covers 5 of each section to complete the installation of the groove bridge structure.

[0050] During later maintenance, the corresponding cover 5 can be removed to check the wiring connection status and whether the cable sheath is intact. If new cables are added on site or the height of obstacles changes, the locking mechanism 7, locking pin 81, fixing pin 94 and sealing mechanism 6 can be loosened to readjust the angle of the climbing cable tray 2 and the horizontal tray 3.

[0051] The specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A bridge structure for cable trays in electrical construction, characterized in that: include: Fixed trough (1), horizontally overhead, with both ends used to connect to the wire trough and for horizontally laid lines to pass through and be laid. The ramp trough (2) is rotatably connected above the middle position of the fixed trough (1) and is used for laying the raised line. The horizontal groove (3) is rotatably connected to the upper end of the climbing groove (2) and is parallel to the fixed groove (1); Elbow groove (4) is provided at one end of the horizontal groove (3) away from the ramp groove (2); The cover (5) is fastened to the upper opening of the fixed groove (1), the climbing groove (2), the horizontal groove (3) and the elbow groove (4).

2. The bridge structure for cable trays in electrical construction according to claim 1, characterized in that: A sealing mechanism (6) is provided at the connection position between the fixed groove (1) and the climbing groove (2). The sealing mechanism (6) includes a sealing plate (61), a screw (62) and a nut (63). The sealing plate (61) is located on the inner side of the climbing groove (2) and is used to slide into the fixed groove (1) and seal the angular gap between the fixed groove (1) and the climbing groove (2). The screw (62) is located on the upper outer wall of the sealing plate (61). The climbing groove (2) is provided with a strip hole (64) along its length direction for the screw (62) to slide. The nut (63) is threaded to the screw (62) and presses against the outer wall of the climbing groove (2).

3. The bridge structure for cable trays in electrical construction according to claim 2, characterized in that: The screw (62) is fitted with a long strip-shaped locking block (65), which is used to be embedded in the strip-shaped hole (64). The locking block (65) is provided with locking teeth (66), and the inner wall of the strip-shaped hole (64) is provided with a locking groove (67) for the locking teeth (66) to be embedded.

4. The bridge structure for cable trays in electrical construction according to claim 3, characterized in that: A locking mechanism (7) is provided between the fixed groove (1) and the climbing groove (2). The locking mechanism (7) includes a threaded tube (71) and a pair of threaded rods (72). The pair of threaded rods (72) are threaded to both ends of the threaded tube (71) and are respectively rotatably connected to the outer walls of the fixed groove (1) and the climbing groove (2).

5. The bridge structure for cable trays in electrical construction according to claim 1, characterized in that: A shielding plate (8) is provided at the connection position of the climbing groove (2) and the horizontal groove (3). The shielding plate (8) is arranged in a fan shape on both sides of the climbing groove (2), and covers the outer wall of the horizontal groove (3), and covers the angular gap between the climbing groove (2) and the horizontal groove (3).

6. The bridge structure for cable trays in electrical construction according to claim 5, characterized in that: The horizontal groove (3) is threaded with a locking pin (81) that presses against the outer wall of the baffle plate (8), and the baffle plate (8) is provided with an arc-shaped hole (82) through which the locking pin (81) passes.

7. The bridge structure for cable trays in electrical construction according to claim 6, characterized in that: A fixing mechanism (9) is provided between the climbing groove (2) and the horizontal groove (3). The fixing mechanism (9) includes a fixing plate (91), a sliding plate (92), a tie rod (93), and a fixing pin (94). The fixing plate (91) is located on the lower end face of the climbing groove (2). The sliding plate (92) is slidably connected to the lower end face of the horizontal groove (3). The tie rod (93) is rotatably connected between the fixing plate (91) and the sliding plate (92). The fixing pin (94) is threadedly connected to the sliding plate (92) and pressed against the lower end face of the horizontal groove (3).

8. The bridge structure for cable trays in electrical construction according to claim 1, characterized in that: A rubber pad (21) is provided at the connection position of the climbing groove (2) and the horizontal groove (3), and the rubber pad (21) covers the rotation position of both.

9. A bridge structure for cable trays in electrical construction according to claim 8, characterized in that: The lower end of the climbing trough (2) is horizontally rotatably connected to a guide tube (22), which allows the raised line to cross over.

Images