Extensible cable tray

Abstract

This utility model discloses an expandable cable tray, comprising at least two tray bodies connected sequentially. Each tray body is a groove-shaped structure with a top opening. The two sides of the top opening extend horizontally inward to form symmetrical flanges. A cover for closing the opening is slidably connected below each flange. Corresponding mounting holes are provided on the side walls of both the head and tail ends of each tray body. Adjacent tray bodies are detachably connected via a connecting assembly. The connecting assembly enables quick and detachable connection, significantly improving the expandability and installation efficiency of the cable tray. Adjacent tray bodies are fixed using L-shaped clamps and bolts, resulting in a simple yet robust connection. By incorporating a telescopic plate and a gear and rack linkage structure, users can rotate the handle to simultaneously bring the clamps closer or further apart, thus adapting to cable tray bodies of different widths or slight deviations, improving connection accuracy, and reducing installation errors.

Description

Technical Field

[0001] This utility model specifically relates to an expandable cable tray. Background Technology

[0002] Cable trays are metal or composite material structural systems used in electrical engineering to support, protect, and manage cables. They are mainly laid in layers and categories, which facilitates maintenance and expansion.

[0003] The cable trays currently in use have a fixed length. When the length of the cable tray is insufficient, bolts are used to splice the new cable tray. This type of expansion is not stable enough and is prone to breakage at the splice, which reduces safety. Utility Model Content

[0004] The purpose of this invention is to provide an expandable cable tray to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an expandable cable tray, comprising at least two tray bodies connected in sequence, wherein the tray body is a groove-shaped structure with an open top, and the two sides of the top opening extend inward horizontally to form symmetrical flanges, and a cover for closing the opening is slidably connected below the flanges; corresponding mounting holes are provided on the side walls of the head and tail ends of the tray body, and adjacent two tray bodies are detachably connected by a connecting component.

[0006] Preferably, the connecting component includes two clamping plates disposed on the outer sides of the connection between the two cable tray bodies. The clamping plates are L-shaped and have through holes on their surfaces that are compatible with the mounting holes.

[0007] Preferably, a telescopic plate is centrally located between the two clamping plates, and a rotating shaft is provided on the lower surface of the telescopic plate, with a gear mounted on the rotating shaft.

[0008] Preferably, the lower surfaces of the two clamping plates are respectively provided with a first rack and a second rack, and both the first rack and the second rack mesh with a gear.

[0009] Preferably, a handle is provided at the end of the rotating shaft away from the telescopic plate.

[0010] Preferably, a fixing plate is provided on the side of the first rack and the second rack that is far apart from each other, and the fixing plate is installed on the side wall of the clamp.

[0011] Preferably, a bolt is inserted into the through hole, and the bolt extends into the mounting hole.

[0012] The technical effects and advantages of this utility model are as follows: This expandable cable tray, by setting multiple cable tray bodies that are connected in sequence, has mounting holes at both ends, and uses connecting components to achieve quick and detachable connection, which significantly improves the expandability and installation efficiency of the cable tray. It uses L-shaped clamps and bolts to fix adjacent cable tray bodies, which is simple in structure but strong in connection. By setting telescopic plates and gear and rack linkage structure, users can rotate the handle to make the clamps on both sides move closer or further apart at the same time, thereby adapting to cable tray bodies of different widths or slight deviations, improving docking accuracy and reducing installation errors. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the flange structure of this utility model; Figure 3 This is a schematic diagram of the structure of the cable tray body of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the structure of the telescopic plate of this utility model; Figure 6 This is a schematic diagram of the structure of the fixing plate of this utility model.

[0014] In the diagram: 1. Cable tray body; 2. Flange; 3. Cover; 4. Mounting hole; 5. Clamping plate; 6. Through hole; 7. Telescopic plate; 8. Shaft; 9. Gear; 10. First rack; 11. Second rack; 12. Handle; 13. Fixing plate; 14. Bolt. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] To improve the docking accuracy when connecting the two cable tray bodies 1, refer to Figure 1 , Figure 2 and Figure 3As shown, the cable tray includes at least two cable tray bodies 1 connected in sequence. Each cable tray body 1 is a groove-shaped structure with an open top. The two sides of the top opening extend inward horizontally to form symmetrical flanges 2. A cover 3 for closing the opening is slidably connected below the flanges 2. The side walls of the head and tail ends of each cable tray body 1 are provided with corresponding mounting holes 4. Adjacent cable tray bodies 1 are detachably connected by a connecting component. By setting multiple cable tray bodies 1 connected in sequence with mounting holes 4 at the head and tail ends, and cooperating with the connecting component, a quick and detachable connection can be achieved, which significantly improves the expandability and installation efficiency of the cable tray. Adjacent cable tray bodies 1 are fixed by using L-shaped clamps 5 and bolts 14. The structure is simple but the connection is firm. By setting a telescopic plate 7, gear 9 and rack linkage structure, the user can rotate the handle 12 to make the clamps 5 on both sides move closer or further away at the same time, thereby adapting to cable tray bodies 1 of different widths or slight deviations and improving the docking accuracy.

[0017] To improve the stability when splicing two cable trays, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the connecting assembly includes two clamping plates 5 located on the outer sides of the connection between the two cable tray bodies 1. The clamping plates 5 are L-shaped, and their surfaces have through holes 6 that match the mounting holes 4. The L-shaped clamping plates 5 form a "corner-wrapping" structure, clamping the cable tray body 1 from two dimensions (lateral and bottom), significantly improving the torsional and shear resistance of the connection, making it more stable than single-sided bonding. The alignment design of the through holes 6 and mounting holes 4 achieves precise "one-to-one" positioning, reducing installation errors and improving assembly efficiency. A telescopic plate 7 is centrally located between the two clamping plates 5. A rotating shaft 8 is located on the lower surface of the telescopic plate 7, and a gear 9 is mounted on the rotating shaft 8. The telescopic plate 7, centrally located, serves as the mounting base for the gear 9, ensuring that the gear 9 is located at the symmetrical center of the two clamping plates 5, guaranteeing balanced force on both sides and preventing unilateral offset. The gear 9 + rotating shaft 8 structure introduces a "rotation-translation" conversion mechanism, providing a power source for subsequent rack and pinion linkage, enabling fine-tuning and adapting to cable tray dimensional errors. Each of the two clamping plates 5 has a first rack 10 and a second rack 11 on its lower surface. Both racks 10 and 11 mesh with gear 9. When gear 9 is rotated, the racks on both sides move in opposite directions simultaneously, pushing the two clamping plates 5 to clamp or loosen the cable tray synchronously, thus avoiding asymmetry during manual adjustment. A handle 12 is provided at the end of the rotating shaft 8 away from the telescopic plate 7. A fixing plate 13 is provided on the side of the first rack 10 and the second rack 11 away from each other. The fixing plate 13 is installed on the side wall of the clamping plate 5. A bolt 14 is inserted into the through hole 6 and extends into the mounting hole 4. The bolt 14 passes through the through hole 6 and the mounting hole 4, rigidly locking the clamping plate 5 to the cable tray body 1, forming a "mechanical dead point" to prevent the clamping plate 5 from loosening due to vibration or external force.

[0018] In use, firstly, the L-shaped clamps 5 are respectively fastened to the outer side of the connection between the two sections of the cable tray body 1 (one on each side), so that the through holes 6 on the clamps 5 are aligned with the mounting holes 4 on the side wall of the cable tray. Then, the telescopic plate 7 is placed in the center between the two sections of the cable tray, allowing the gear 9 to naturally fall below the joint between the two sections. At this time, the gear 9 is engaged with the first rack 10 and the second rack 11. Confirm that the fixing plate 13 has restrained the first rack 10 and the second rack 11 against the side wall of their respective clamps 5 to prevent the racks from wobbling left and right. Rotate the handle 12 by hand to drive the rotating shaft 8 and the gear 9 to rotate. The gear 9 simultaneously drives the first rack 10 and the second rack 11, causing the left... The two right clamping plates 5 move towards the cable tray body 1 simultaneously until the inner side of the L-shaped clamping plate 5 is flush with the side wall of the cable tray. (If the two sections of the cable tray are slightly misaligned, they can be finely adjusted by reversing the handle 12 to achieve precise alignment.) Keep the handle 12 still and pass the bolts 14 through the through holes 6 of the clamping plates 5 and into the mounting holes 4 on the side wall of the cable tray. Tighten all the bolts 14 in a diagonal order to ensure that the two sections of the cable tray body 1 and the connecting components form a rigid whole. Slide the cover 3 back along the flange 2 to completely cover the top opening, completing the sealing and protection of this section of the cable tray. If it is necessary to continue to lengthen, repeat steps one to five and then connect the next section of the cable tray at the newly exposed end.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model.

Claims

1. An expandable cable tray, characterized in that, The system includes at least two cable tray bodies (1) that are connected sequentially. Each cable tray body (1) is a groove-shaped structure with an open top. The two sides of the top opening extend inward to form symmetrical flanges (2). A cover (3) for closing the opening is slidably connected below the flange (2). Corresponding mounting holes (4) are provided on the side walls of the head and tail ends of each cable tray body (1). Two adjacent cable tray bodies (1) are detachably connected by a connecting assembly. The connecting assembly includes components located on both sides of the connection between the two cable tray bodies (1). Two clamping plates (5) are L-shaped, and through holes (6) adapted to the mounting holes (4) are opened on the surface of the clamping plates (5). A telescopic plate (7) is arranged in the middle between the two clamping plates (5). A rotating shaft (8) is arranged on the lower surface of the telescopic plate (7). A gear (9) is installed on the rotating shaft (8). A first rack (10) and a second rack (11) are respectively arranged on the lower surface of the two clamping plates (5). The first rack (10) and the second rack (11) mesh with the gear (9).

2. The expandable cable tray according to claim 1, characterized in that: A handle (12) is provided at the end of the rotating shaft (8) away from the telescopic plate (7).

3. The expandable cable tray according to claim 1, characterized in that: The first rack (10) and the second rack (11) are each provided with a fixing plate (13) on the side away from each other, and the fixing plate (13) is installed on the side wall of the clamp (5).

4. The expandable cable tray according to claim 1, characterized in that: A bolt (14) is inserted into the through hole (6), and the bolt (14) extends into the mounting hole (4).

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