A cable fixing structure for a cable tray

Abstract

The utility model discloses a kind of cable fixing structures for cable bridge, including mounting seat, first long slot is opened in mounting seat, two clamping grooves are symmetrically opened in the two sides of first long slot;Several tightening mechanisms are installed in first long slot by clamping, and the tightening mechanism includes two parallelly arranged clamping plates, the two ends of clamping plate are connected with two clamping grooves by two telescopic clamping blocks respectively, and two clamping plates are respectively fixedly connected with restraint belt and ratchet piece.Tightening mechanism is realized by setting first long slot and clamping groove on mounting seat and cooperating with telescopic clamping block on clamping plate Clamping installation, the quick installation operation of tightening mechanism is realized, and the tedious operation of screw is avoided.The structure makes cable fixing device can be conveniently replaced or maintained in practical application, and significantly improves the efficiency of construction and later maintenance.

Description

Technical Field

[0001] This utility model relates to the field of cable tray accessories technology, and in particular to a cable fixing structure for cable trays. Background Technology

[0002] Cable trays are important installation structures used to support and protect power cables, communication cables, and other cables. Cable trays are typically composed of modules such as trays, ladders, and trunking. Their installation process includes multiple steps such as measurement and positioning, bracket fixing, tray splicing, and cable laying and securing. During cable laying, to ensure neat cable arrangement, safe operation, and protection from external interference, various cable fixing devices are used for binding or clamping. Commonly used cable fixing methods include cable ties, metal cable clips, sliding fasteners, and pressure plates / strips. These devices achieve their fixing function by applying clamping or binding force to the cables and are usually screwed, snap-fitted, or welded to the cable tray body.

[0003] However, existing cable tray fixing devices generally suffer from problems such as complex structure, inconvenient assembly and disassembly, limited fixing methods, non-reusability, and difficulty in adding or removing cables. On the one hand, traditional methods using cable ties or metal clamps, while low-cost, cannot meet the needs of frequent assembly and disassembly and cable replacement, especially during system operation or maintenance, where adding or removing cables often requires rewiring. On the other hand, while some fixing devices with clip structures offer some adjustability, their actual installation is cumbersome, the clamps are not secure, or additional tools are required, making them prone to human error and affecting installation efficiency. Therefore, to address the above problems, there is an urgent need for a cable tray fixing device that is structurally sound, easy to install, securely fixed, and allows for flexible addition and removal of cables. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a cable fixing structure for cable trays.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cable fixing structure for cable trays includes a mounting base with a first elongated groove and two symmetrically arranged slots on both sides of the first elongated groove; a plurality of tightening mechanisms engaged within the first elongated groove; each tightening mechanism includes two parallel locking plates, the ends of which are engaged with the two slots via two telescopic locking blocks; a binding strap and a ratchet are fixedly connected to the two locking plates respectively; a U-shaped block with an inverted U-shape is fixedly connected to the end of the binding strap; a first limiting ring matching the ratchet is fixedly connected to the bottom of the end of the U-shaped block; a pawl cooperating with the ratchet is rotatably provided at the bottom of the U-shaped block; the end of the ratchet moves through the first limiting ring and cooperates with the pawl to restrict its unidirectional sliding; a threaded rod is disposed below the locking plates, extending along the direction of the first elongated groove and fixedly connected to the mounting base at both ends; bolts are threaded onto the threaded rod, the bolts are located on the same side of each tightening mechanism and are tightly fitted with adjacent locking plates, with a gap between the bottom of the bolt and the bottom wall of the mounting base.

[0007] Preferably, the bottom of the snap-fit ​​plate is provided with a second long groove, and both ends of the second long groove are provided with movable holes. The telescopic snap-fit ​​block is movably inserted through the movable hole and snaps into the corresponding snap-fit ​​slot. The end of the telescopic snap-fit ​​block is a wedge-shaped structure with the bottom inclined inward. The ends of the two telescopic snap-fit ​​blocks that are close to each other are fixedly connected to a connecting rod that is perpendicular to the snap-fit ​​slot. The ends of the two connecting rods respectively movably pass through the two fixed blocks and are fixedly connected to a limit block. Springs are movably sleeved on the two connecting rods. The two ends of the springs are fixedly connected to the telescopic snap-fit ​​block and the fixed block respectively.

[0008] Preferably, a first lever is fixedly connected to the top of each of the two telescopic blocks. Two movable slots are provided on the locking plate to cooperate with the first lever. The top of the first lever moves through the movable slot and extends to the top of the locking plate. The opening direction of the movable slot is consistent with the extension direction of the spring. The fixed block is fixedly connected to the inner wall of the first long slot. Semi-circular slots are provided on both sides of the second long slot at positions corresponding to the threaded rod. The semi-circular slots are located directly above the threaded rod and have a gap between them and the threaded rod.

[0009] Preferably, the two ends of the pawl are rotatably connected to the U-shaped block through two rotating shafts. One end of the rotating shaft movably passes through the side wall of the U-shaped block and is fixedly connected to a second lever. A torsion spring is sleeved on the part of the rotating shaft between the U-shaped block and the second lever. The two ends of the torsion spring are respectively engaged and fixed with the U-shaped block and the second lever.

[0010] Preferably, both the restraint strap and the ratchet are flat and elongated structures. A retaining ring is movably sleeved on the restraint strap, and a second limiting ring is fixedly connected to the bottom of the retaining ring. The end of the ratchet moves through the second limiting ring and is fixedly connected to an inlet portion, which is a trapezoidal structure that gradually narrows at the end.

[0011] Preferably, the mounting base has a plurality of mounting holes for fixing the mounting base onto the cable tray.

[0012] This utility model has the following beneficial effects:

[0013] 1. In this utility model, by setting a first elongated groove and a slot on the mounting base, and engaging with the telescopic locking block on the locking plate for snap-fit ​​installation, a quick installation operation of the tightening mechanism is achieved, avoiding the cumbersome operation of screws. This structure allows for convenient replacement or maintenance of the cable fixing device in practical applications, significantly improving the efficiency of construction and subsequent maintenance.

[0014] 2. The present invention adopts a one-way locking structure in which ratchet plate and pawl cooperate, which can effectively realize the automatic locking of the cable restraint strap in the tensile state, thereby preventing the cable from loosening or slipping during use and improving safety and reliability.

[0015] 3. In this utility model, the first lever block and the second lever block on the side of the U-shaped block on the snap-fit ​​plate can be manually controlled to easily control the tightness of the snap-fit ​​block and the pawl, realizing tool-free loading, unloading and adjustment, meeting the flexible installation needs of different cable diameters, enhancing the adaptability of assembly. Compared with traditional disposable nylon cable ties, the detachable structure used in this utility model can be used multiple times, which not only saves material costs, but also conforms to the current direction of green and sustainable development, and improves the overall service life and environmental value of the product. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side sectional view of the present invention.

[0018] Figure 3 This is a schematic diagram of the snap-fit ​​plate structure of this utility model;

[0019] Figure 4 This is a schematic cross-sectional view of the tightening mechanism of this utility model;

[0020] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 6 This is a schematic diagram of the restraint strap structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the ratchet rack structure of this utility model;

[0023] Figure 8This is a schematic diagram of the connection structure of the U-shaped block, ratchet, and second pawl of this utility model;

[0024] Figure 9 This is a cross-sectional schematic diagram of the connection structure between the U-shaped block and the second lever block of this utility model;

[0025] Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point B.

[0026] In the diagram: 1. Mounting base; 101. First long groove; 102. Slot; 103. Mounting hole; 2. Snap-fit ​​plate; 201. Second long groove; 202. Movable hole; 203. Telescopic locking block; 204. Connecting rod; 205. Fixing block; 206. Spring; 207. Limiting block; 208. First shifting block; 209. Movable groove; 210. Semi-circular groove; 3. Restraint strap; 301. U-shaped block; 302. First limiting ring; 303. Pawl; 304. Rotating shaft; 305. Second shifting block; 306. Torsion spring; 307. Snap ring; 308. Second limiting ring; 4. Racket; 401. Guide part; 5. Threaded rod; 6. Bolt. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figure 1-10 A cable fixing structure for cable trays includes a mounting base 1 with a first elongated groove 101 and two symmetrically arranged slots 102 on both sides of the first elongated groove 101. A plurality of tightening mechanisms are engaged within the first elongated groove 101. Each tightening mechanism includes two parallel locking plates 2, with both ends of the locking plates 2 connected to the two slots 102 via two telescopic locking blocks 203. A restraining strap 3 and a ratchet plate 4 are fixedly connected to each of the two locking plates 2. A U-shaped block 301 with an inverted U-shape is fixedly connected to the end of the restraining strap 3. A first limiting ring 302 matching the ratchet plate 4 is fixedly connected to the bottom. A pawl 303 that works with the ratchet plate 4 is rotatably provided at the bottom of the U-shaped block 301. The end of the ratchet plate 4 moves through the first limiting ring 302 and works with the pawl 303 to restrict its unidirectional sliding. A threaded rod 5 is provided below the snap-fit ​​plate 2. The threaded rod 5 extends along the direction of the first long groove 101 and is fixedly connected to the mounting base 1 at both ends. A bolt 6 is threadedly connected to the threaded rod 5. The bolt 6 is located on the same side of each tightening mechanism and is tightly fitted with the adjacent snap-fit ​​plate 2. A gap is left between the bottom of the bolt 6 and the bottom wall of the mounting base 1.

[0029] In this embodiment, the mounting base 1 provides a stable installation platform for the entire cable fixing structure, facilitating the overall installation of the structure on the cable tray and ensuring that the structure remains stable during use, possessing good load-bearing and fixing capabilities. The snap-fit ​​plate 2 serves as the support platform for the restraint strap 3 and the ratchet plate 4. Its two ends are snapped into the slot 102 by telescopic snap-fit ​​blocks 203. Through the wedge structure and elastic component cooperation, it realizes automatic rebound and snap-fit ​​functions, thereby enabling the rapid assembly and disassembly of the tightening mechanism and improving the maintainability and flexibility of the structure. The restraint strap 3 and the ratchet plate 4 cooperate to serve as the cable... The core functional components for binding and one-way limiting form an effective clamping channel; the U-shaped block 301 serves as the guiding structure for the ratchet plate 4, the first limiting ring 302 is used to limit the sliding range of the ratchet plate, and the pawl 303 cooperates with the ratchet plate to provide one-way locking, realizing a one-way locking structure between the binding strap 3 and the ratchet plate 4, effectively preventing the cable from springing back and loosening; the threaded rod 5 serves as the carrier of the adjustment mechanism, and the bolt 6 can push the clamping plate 2 laterally to further tighten the cable, improve the fixing strength, and can finely adjust the tightness according to actual needs, making the structure more flexible and robust.

[0030] In this utility model, the bottom of the snap-fit ​​plate 2 is provided with a second long groove 201, and both ends of the second long groove 201 are provided with movable holes 202. The telescopic snap-fit ​​block 203 is movably inserted through the movable hole 202 and snaps into the corresponding snap-fit ​​groove 102. The end of the telescopic snap-fit ​​block 203 is a wedge-shaped structure with the bottom inclined inward. The ends of the two telescopic snap-fit ​​blocks 203 that are close to each other are fixedly connected to the connecting rods 204 that are perpendicular to the snap-fit ​​groove 102. The ends of the two connecting rods 204 respectively movably pass through the two fixing blocks 205 and are fixedly connected to the limit blocks 207. Springs 206 are movably sleeved on the two connecting rods 204. The two ends of the springs 206 are fixedly connected to the telescopic snap-fit ​​block 203 and the fixing block 205 respectively.

[0031] In this embodiment, the second long groove 201 is a guide groove at the bottom of the snap-fit ​​plate 2. The movable holes 202 at both ends provide a path for the telescopic snap-fit ​​block 203 to freely enter and exit, giving it good displacement elasticity and guiding effect, while ensuring that the snap-fit ​​block moves smoothly during the snap-fit ​​process. The telescopic snap-fit ​​block 203 extends into the snap-fit ​​groove 102 through the movable holes 202 and cooperates with both ends of the snap-fit ​​plate 2 to form a snap-fit ​​mechanism. The telescopic snap-fit ​​block 203 is a wedge-shaped structure with the bottom inclined inward. When it is pressed down from above the mounting base 1, the telescopic snap-fit ​​blocks 203 at both ends are simultaneously retracted by the force through the two sides of the first long groove 101. When the snap-fit ​​block 203 is pressed into the snap-fit ​​groove, the spring 206 can automatically pull back its position, improving the structure's adaptability and convenience. The fixing block 205 serves as the fixing fulcrum for the connecting rod 204 and the spring 206, maintaining the structural integrity of the snap-fit ​​mechanism and cooperating with the mounting base 1 to provide reliable fixed support. The limiting block 207 is used to prevent the end of 204 from coming off the fixing block 205.

[0032] In this utility model, the tops of the two telescopic blocks 203 are fixedly connected to the first lever block 208. The locking plate 2 has two movable slots 209 that cooperate with the first lever block 208. The top of the first lever block 208 moves through the movable slot 209 and extends to the top of the locking plate 2. The opening direction of the movable slot 209 is consistent with the extension and retraction direction of the spring 206. The fixing block 205 is fixedly connected to the inner wall of the first long slot 101. The two side walls of the second long slot 201 are provided with semi-circular slots 210 at positions corresponding to the threaded rod 5. The semi-circular slots 210 are located directly above the threaded rod 5 and have a gap with the threaded rod 5.

[0033] In this embodiment, the first lever 208 is fixed to the top of the two telescopic locking blocks 203, serving as a lever component for manually operating the locking blocks. Users can control the forward and backward movement of the telescopic locking blocks 203 by levering the first lever 208, thereby enabling quick assembly or disassembly of the locking plate 2 and improving the convenience of cable maintenance. The movable groove 209 is formed on the locking plate 2 and cooperates with the first lever 208. In conjunction with the extension and retraction of the spring 206, it provides a guiding function for the telescopic locking blocks 203, enabling them to extend and retract along the direction perpendicular to 201, realizing locking and disassembly, effectively avoiding displacement interference, and enhancing structural stability. The semi-circular groove 210 provides clearance space for the threaded rod 5, preventing it from interfering with the movement path of the locking plate 2, enhancing structural fit, avoiding hard collisions that cause sliding jamming, and ensuring smooth operation of the overall structure.

[0034] In this utility model, the two ends of the pawl 303 are rotatably connected to the U-shaped block 301 through two rotating shafts 304. One end of the rotating shaft 304 movably passes through the side wall of the U-shaped block 301 and is fixedly connected to a second lever 305. A torsion spring 306 is sleeved on the part of the rotating shaft 304 located between the U-shaped block 301 and the second lever 305. The two ends of the torsion spring 306 are respectively engaged and fixed with the U-shaped block 301 and the second lever 305.

[0035] In this embodiment, the rotating shaft 304 is located at both ends of the pawl 303 for rotatable connection with the U-shaped block 301. The pawl can rotate freely around the rotating shaft 304 to achieve elastic engagement, making the device more stable during operation and preventing damage caused by forced locking. The second lever 305 is connected to the rotating shaft 304, allowing the user to manually move the pawl 303 to unlock, facilitating quick and easy release of the locked state and making cable removal simpler and more intuitive, without the need for professional tools. The torsion spring 306 is sleeved on the rotating shaft 304, located between the U-shaped block 301 and the second lever 305, providing a spring force for rotational reset, pushing the pawl 303 to always maintain engagement with the ratchet plate 4, realizing the automatic reset function of the pawl, preventing locking failure due to forgetting to reset, and improving the intelligence and safety of the structure. One end of the torsion spring engages with the U-shaped block 301, and the other end engages with the second lever 305, keeping the spring fixed and preventing slippage or rotational misalignment during use, ensuring that the torsion spring always has elastic holding force.

[0036] In this utility model, both the restraint strap 3 and the ratchet plate 4 are flat and elongated structures. A retaining ring 307 is movably sleeved on the restraint strap 3. A second limiting ring 308 is fixedly connected to the bottom of the retaining ring 307. The end of the ratchet plate 4 movably passes through the second limiting ring 308 and is fixedly connected to an inlet portion 401. The inlet portion 401 is a trapezoidal structure that gradually narrows at the end.

[0037] In this embodiment, the binding strap 3 and the ratchet 4 are flat and elongated structures. They work together to fix and position the cable. Compared with the traditional circular cable tie structure, they fit the cable surface better, distribute the force evenly, and reduce the risk of damage to the cable sheath. The retaining ring 307 is movably sleeved on the binding strap 3 and can slide along the binding strap 3. The second limiting ring 308 provides auxiliary limiting and guiding control for the end of the ratchet 4, preventing the ratchet 4 from leaving the binding track or generating excessive play, thus enhancing the overall structural stability. The guide part 401 at the end of the ratchet 4 is a trapezoidal structure that gradually narrows at the end, guiding the ratchet 4 to pass smoothly through the first limiting ring 302 and the second limiting ring 308 and enter the pawl 303 engagement area, achieving rapid insertion and automatic positioning, reducing the number of manual adjustments, and improving assembly efficiency.

[0038] In this utility model, the mounting base 1 is provided with a plurality of mounting holes 103, which are used to fix the mounting base 1 on the cable tray.

[0039] In this embodiment, the mounting hole 103 is used to securely mount the mounting base 1 onto the surface of the cable tray. Direct connection is possible without the need for additional adapter brackets; the hole diameter is compatible with standard fasteners, such as screws, rivets, or studs, improving the overall installation stability of the structure and preventing displacement or loosening due to vibration in the cable tray.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cable fixing structure for cable trays, characterized in that, include: Mounting base (1), the mounting base (1) is provided with a first long groove (101), and two slots (102) are symmetrically provided on both sides of the first long groove (101). A number of tightening mechanisms are installed in the first long slot (101). The tightening mechanism includes two parallel snap-fit ​​plates (2). The two ends of the snap-fit ​​plates (2) are respectively snapped into two slots (102) by two telescopic snap-fit ​​blocks (203). The two snap-fit ​​plates (2) are respectively fixedly connected with a restraint strap (3) and a ratchet plate (4). The end of the restraint strap (3) is fixedly connected with a U-shaped block (301) with an inverted U-shaped structure. The bottom of the end of the U-shaped block (301) is fixedly connected with a first limiting ring (302) that matches the ratchet plate (4). The bottom of the U-shaped block (301) is rotatably provided with a pawl (303) that cooperates with the ratchet plate (4). The end of the ratchet plate (4) moves through the first limiting ring (302) and cooperates with the pawl (303) to restrict its unidirectional sliding. A threaded rod (5) is provided below the snap-fit ​​plate (2). The threaded rod (5) extends along the direction of the first long groove (101) and is fixedly connected to the mounting base (1) at both ends. A bolt (6) is threaded on the threaded rod (5). The bolt (6) is located on the same side of each tightening mechanism and is tightly fitted with the adjacent snap-fit ​​plate (2). A gap is left between the bottom of the bolt (6) and the bottom wall of the mounting base (1).

2. The cable fixing structure for cable trays according to claim 1, characterized in that, The bottom of the snap-fit ​​plate (2) is provided with a second long groove (201), and both ends of the second long groove (201) are provided with movable holes (202). The telescopic snap-fit ​​block (203) is movably inserted through the movable hole (202) and snapped into the corresponding snap-fit ​​slot (102). The end of the telescopic snap-fit ​​block (203) is a wedge-shaped structure with the bottom inclined inward. The ends of the two telescopic snap-fit ​​blocks (203) close to each other are fixedly connected with connecting rods (204) arranged perpendicular to the snap-fit ​​slot (102). The ends of the two connecting rods (204) respectively movably pass through two fixed blocks (205) and are fixedly connected to limit blocks (207). Springs (206) are movably sleeved on the two connecting rods (204). The two ends of the springs (206) are fixedly connected to the telescopic snap-fit ​​block (203) and the fixed block (205) respectively.

3. A cable fixing structure for cable trays according to claim 2, characterized in that, The top of each of the two telescopic blocks (203) is fixedly connected to a first lever (208). The locking plate (2) has two movable slots (209) that cooperate with the first lever (208). The top of the first lever (208) moves through the movable slot (209) and extends to the top of the locking plate (2). The opening direction of the movable slot (209) is consistent with the extension direction of the spring (206). The fixing block (205) is fixedly connected to the inner wall of the first long slot (101). The two side walls of the second long slot (201) are provided with semi-circular slots (210) at positions corresponding to the threaded rod (5). The semi-circular slots (210) are located directly above the threaded rod (5) and have a gap between them and the threaded rod (5).

4. A cable fixing structure for cable trays according to claim 1, characterized in that, The two ends of the pawl (303) are rotatably connected to the U-shaped block (301) through two rotating shafts (304). One end of the rotating shaft (304) movably passes through the side wall of the U-shaped block (301) and is fixedly connected to a second lever (305). A torsion spring (306) is sleeved on the part of the rotating shaft (304) between the U-shaped block (301) and the second lever (305). The two ends of the torsion spring (306) are respectively engaged and fixed with the U-shaped block (301) and the second lever (305).

5. A cable fixing structure for cable trays according to claim 1, characterized in that, Both the restraint strap (3) and the ratchet plate (4) are flat and elongated structures. A retaining ring (307) is movably sleeved on the restraint strap (3). A second limiting ring (308) is fixedly connected to the bottom of the retaining ring (307). The end of the ratchet plate (4) moves through the second limiting ring (308) and is fixedly connected to an inlet (401). The inlet (401) is a trapezoidal structure that gradually narrows at the end.

6. A cable fixing structure for cable trays according to claim 1, characterized in that, The mounting base (1) has a plurality of mounting holes (103) for fixing the mounting base (1) on the cable tray.

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