A power cable laying all-round protection device

Abstract

This utility model relates to the field of power cable engineering technology, specifically to a comprehensive protection device for power cable laying, including a fixed pipe body, a movable pipe body, an automatic positioning and clamping assembly, and a universal joint. The universal joint is connected to the front end of the fixed pipe body and the rear end of the movable pipe body, and the automatic positioning and clamping assembly is welded to the front end of the movable pipe body. Through the structural design of the universal joint, this utility model can realize the free turning of the power cable at multiple angles in space, effectively cope with complex paths such as cable passing through walls and corners, and avoid excessive bending. Through the structural design of the automatic positioning and clamping assembly, the center position of the power cable can be automatically locked and self-fixed, reducing the frictional loss of the clamp on the power cable, and is suitable for automatic locking of power cables of various diameters.

Description

Technical Field

[0001] This utility model relates to the field of power cable engineering technology, specifically to a comprehensive protection device for power cable laying. Background Technology

[0002] There are various cable laying scenarios. In some cases, after a cable enters or passes through a building or structure, its laying direction needs to be changed. Furthermore, during the laying of power cables, cables often need to traverse complex paths (such as through walls, corners, and shafts) and remain relatively fixed. However, existing protection devices have the following shortcomings:

[0003] Firstly, the guide components are mostly at a fixed angle, which cannot flexibly cope with scenarios where cables bend at multiple angles;

[0004] Secondly, the clamping mechanism requires manual positioning to find the center point of the pipeline, and the clamping mechanism is prone to cable sheath wear due to external impact, lacking buffer protection design.

[0005] Therefore, there is an urgent need for a cable laying protection device that is simple in structure, easy to adjust, and has multi-angle protection functions. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides an all-around protection device for power cable laying, thereby resolving the issues raised in the background section.

[0007] It includes a fixed tube body, a movable tube body, an automatic positioning and clamping assembly, and a universal joint. The universal joint is connected to the front end of the fixed tube body and the rear end of the movable tube body, and the automatic positioning and clamping assembly is welded to the front end of the movable tube body.

[0008] Preferably, the universal joint includes an outer ball cage and an inner ball cage. The inner wall of the outer ball cage is uniformly provided with eight first limiting grooves along the circumferential direction, and the outer wall of the inner ball cage is uniformly provided with eight second limiting grooves along the circumferential direction. Eight sets of balls are rotatably connected in the groove space between the inner side of the outer ball cage and the outer side of the inner ball cage.

[0009] Preferably, the rear end of the outer ball cage is welded to the fixed tube, and the front end of the inner ball cage is welded to the movable tube. The universal joint, the fixed tube, and the movable tube are all made of stainless steel.

[0010] Preferably, the interiors of the fixed tube, the movable tube, the outer ball cage, and the inner ball cage are all hollow cavity structures, and the welded inner openings of the fixed tube and the outer ball cage, and the movable tube and the inner ball cage are all treated with arc surface grinding.

[0011] Preferably, the automatic positioning and clamping assembly includes a first fixing plate, one end of which is welded to the front end of the movable tube body. Five sets of fixing bolts are evenly fixed to the other end of the first fixing plate along the circumferential direction. The other ends of the five sets of fixing bolts are fixedly connected to a third fixing plate. A limiting toothed rack is provided on the outer side of the top of the first fixing plate. Spring placement grooves are provided on the sides of the first fixing plate and the third fixing plate that are close to each other. Three sets of grooves are evenly provided on the front edge of the third fixing plate along the circumferential direction.

[0012] Preferably, a second fixed disk is rotatably connected inside the first and third fixed disks. A limit buckle is fixedly connected to the top of the second fixed disk. The limit buckle includes a limit slide rod fixedly connected to the top of the second fixed disk, a nut threaded onto the outer side of the top of the limit slide rod, and a slider with teeth slidably fitted onto the outer side of the limit slide rod. The outer side of the top of the slide rod is threaded. The teeth of the slider engage with the limit rack on the outer side of the top of the first fixed disk. A spring is fixedly connected to the outer side of the bottom of the limit slide rod. A fixed baffle is fixedly connected to the other end of the spring. The fixed baffle is fixedly connected inside the two sets of spring placement slots. The spring is slidably connected inside the two sets of spring placement slots. A cylindrical handle is fixedly connected to the outer right side of the second fixed disk. The cylindrical handle is slidably connected between the two sets of fixing bolts.

[0013] Preferably, the automatic positioning and clamping assembly further includes a connecting rod and a rubber fixing clamp; the connecting rod is rotatably connected to the front end of the second fixed plate in three sets, and each of the three sets of connecting rods has a cylindrical protrusion fixedly provided on its outer end. The cylindrical protrusion is slidably connected to the groove in the front edge of the third fixed plate. The rubber fixing clamp is rotatably connected to the inner end of the connecting rod, and the surface of the rubber fixing clamp is provided with anti-slip texture.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This device, through its universal joint structure design, enables power cables to freely turn at multiple angles within space, effectively handling complex paths such as cable penetration through walls and corners, and avoiding excessive bending.

[0016] By using the coordinated operation of the various parts in the automatic positioning clamping assembly, the rubber fixing clamp can automatically lock the center position of the power cable for fixation, reducing the frictional loss of the power cable by the clamp, and is suitable for automatic locking of power cables of various diameters. Attached Figure Description

[0017] Figure 1 This is an exploded view of an all-around protection device for power cable laying provided in an embodiment of this application;

[0018] Figure 2This is a schematic diagram of the overall structure of an all-around protection device for power cable laying provided in an embodiment of this application;

[0019] Figure 3 This is a cross-sectional structural schematic diagram of an all-around protection device for power cable laying provided in an embodiment of this application;

[0020] Figure 4 This is a front structural schematic diagram of the automatic positioning and clamping component in an all-round protection device for laying power cables provided in this application embodiment;

[0021] Figure 5 This is an exploded view of the automatic positioning and clamping component in an all-around protection device for power cable laying provided in an embodiment of this application;

[0022] In the picture:

[0023] 1. Fixed tube body; 2. Movable tube body; 3. Automatic positioning and clamping assembly; 4. Universal joint; 401. Outer ball cage; 402. Inner ball cage; 403. Ball bearing; 301. First fixed plate; 302. Fixing bolt; 303. Limiting buckle; 304. Spring; 305. Second fixed plate; 306. Third fixed plate; 307. Connecting rod; 308. Rubber fixing clamp. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0025] Please see Figure 1-5 In this embodiment, an all-around protection device for power cable laying is provided, including a fixed pipe body 1, a movable pipe body 2, an automatic positioning and clamping assembly 3, and a universal joint 4. The universal joint 4 is connected to the front end of the fixed pipe body 1 and the rear end of the movable pipe body 2, and the automatic positioning and clamping assembly 3 is welded to the front end of the movable pipe body 2.

[0026] Universal joint 4 includes an outer ball cage 401 and an inner ball cage 402. The inner wall of the outer ball cage 401 is evenly provided with eight first limiting grooves along the circumference, and the outer wall of the inner ball cage 402 is evenly provided with eight second limiting grooves along the circumference. Eight sets of ball bearings 403 are rotatably connected in the groove space between the inner side of the outer ball cage 401 and the outer side of the inner ball cage 402. The size of the ball bearings fits the two limiting grooves perfectly so that they do not slip off during rotation.

[0027] The rear end of the outer ball cage 401 is welded to the fixed tube 1, and the front end of the inner ball cage 402 is welded to the movable tube 2. The universal joint 4, the fixed tube 1, and the movable tube 2 are all made of stainless steel.

[0028] The interiors of the fixed tube 1, the movable tube 2, the outer ball cage 401, and the inner ball cage 402 are all hollow cavity structures. The welded inner openings of the fixed tube 1 and the outer ball cage 401, and the movable tube 2 and the inner ball cage 402 are all treated with arc-shaped grinding. The treated contact surfaces are burr-free and smooth, which can effectively prevent the power cable pipe from being scratched inside the cavity and ensure that the pipeline makes non-hard contact when changing direction.

[0029] The automatic positioning and clamping assembly 3 includes a first fixed plate 301. One end of the first fixed plate 301 is welded to the front end of the movable tube 2. Five sets of fixing bolts 302 are evenly fixed to the other end of the first fixed plate 301 along the circumferential direction. The other end of the five sets of fixing bolts 302 is fixedly connected to a third fixed plate 306. A limiting toothed rack is provided on the outer side of the top of the first fixed plate 301. Spring placement grooves are provided on the side of the first fixed plate 301 and the third fixed plate 306 that are close to each other. Three sets of grooves are evenly provided along the circumferential direction at the front edge of the third fixed plate 306.

[0030] A second fixed disk 305 is rotatably connected inside the first fixed disk 301 and the third fixed disk 306. A limit buckle 303 is fixedly connected to the top of the second fixed disk 305. The limit buckle 303 includes a limit slide rod fixedly connected to the top of the second fixed disk 305, a nut sleeved on the outside of the top of the limit slide rod, and a slider with teeth slidably sleeved on the outside of the limit slide rod. The outside of the top of the slide rod is threaded. The teeth of the slider engage with the limit rack on the outside of the top of the first fixed disk 301. A spring 304 is fixedly connected to the outside of the bottom of the limit slide rod. A fixed baffle is fixedly connected to the other end of the spring 304. The fixed baffle is fixedly connected to the inside of two sets of spring placement slots. The spring 304 is slidably connected to the inside of two sets of spring placement slots. A cylindrical handle is fixedly connected to the right periphery of the second fixed disk 305. The cylindrical handle is slidably connected between two sets of fixing bolts 302.

[0031] The automatic positioning and clamping assembly 3 also includes a connecting rod 307 and a rubber fixing chuck 308. The connecting rod 307 is rotatably connected to three sets at the front end of the second fixing plate 305. The outer ends of the three sets of connecting rods 307 are all fixed with cylindrical protrusions. The cylindrical protrusions are slidably connected to the grooves in the front edge of the third fixing plate 306. The rubber fixing chuck 308 is rotatably connected to the inner end of the connecting rod 307. The surface of the rubber fixing chuck 308 is provided with anti-slip texture.

[0032] The installation method and embodiments of this device are described below:

[0033] Installation method:

[0034] First, the inner ball cage 402 is embedded inside the outer ball cage 401. Then, eight sets of ball bearings 403 are placed in sequence in the fitting gap between the two to realize the structural assembly of the universal joint 4, so that the inner ball cage 402 is rotatably connected to the inside of the outer ball cage 401, maintaining the multi-angle steering of the inner ball cage 402.

[0035] Then, the first fixing plate 301 is welded to the front end of the inner ball cage 402. Next, the inner opening of the second fixing plate 305 is inserted into the front end of the first fixing plate 301, and the second fixing plate 305 and the first fixing plate 301 are aligned coaxially. Then, the spring 304 is fixed to the bottom side of the limiting slide rod. Next, the spring 304 and the fixing baffle are inserted into the spring placement groove of the first fixing plate 301 to ensure that the second fixing plate 305 can slide elastically along the spring placement groove without detaching. At this time, the side of the third fixing plate 306 with the spring placement groove is aligned coaxially with the first fixing plate 301 and engaged. Then, the third fixing plate 306 and the first fixing plate 301 are fixed by five sets of fixing bolts 302.

[0036] Next, the three sets of rubber fixing clamps 308 are rotatably connected to the ends of the three sets of connecting rods 307 respectively. Then, the connecting rods 307 are rotatably connected to the front end of the second fixing plate 305 through the three sets of rotating shafts, so that the cylindrical protrusions provided on the outer ends of the three sets of connecting rods 307 are slidably connected to the grooves on the front edge of the third fixing plate 306.

[0037] Specific examples:

[0038] Before using this utility model, the worker first fixes the fixed pipe body 1 in the reserved hole on the construction wall, and then passes the construction power cable pipe through the fixed pipe body 1, universal joint 4 and movable pipe body 2 in sequence to the first fixed plate 301. Then, by rotating the cylindrical handle fixed to the lower right of the second fixed plate 305 clockwise, the spring 304 is stretched under the elastic action inside the spring placement groove. Correspondingly, the second fixed plate 305 will rotate inside the first fixed plate 301 and the third fixed plate 306. Furthermore, the limiting slide rod at the top of the second fixed plate 305 and the slider with teeth on the outside of the limiting slide rod will also rotate. When the slider rotates to the appropriate position of the limiting toothed rack above the first fixed plate 301, the nut at the top of the limiting slide rod is tightened and pressed down along the external thread. The nut further abuts against the slider, so that the teeth on the slider engage and fix with the limiting toothed rack above the first fixed plate 301.

[0039] Furthermore, under the action of the lever principle, the cylindrical protrusion at the end of the connecting rod 307 slides in the groove opened at the front edge of the third fixed plate 306. Furthermore, the three sets of connecting rods 307 and the rubber fixing clamps 308 rotatably connected to the ends of the connecting rods 307 are in a separated state; at this time, the power cable pipe passes through the inside of the automatic positioning clamping assembly 3.

[0040] Based on the construction requirements, the power cable conduit can continue to be pulled. At the same time, by rotating the movable conduit 2, the laying angle of the power cable conduit can be changed. After determining the connection angle between the movable conduit 2 and the fixed conduit 1, the nut is rotated in the opposite direction. Then, the slider on the limit buckle 303 is slid up and lifted. Further, the toothed buckle connected to the slider is disengaged from the limit rack above the first fixed plate 301. Then, the spring 304 will drive the second fixed plate 305 to reset under the action of elasticity. Further, the connecting rod 307 connected to the front end of the second fixed plate 305 will also rotate. Under the action of the lever principle, the rubber fixing clamps 308 connected to the ends of the three sets of connecting rods 307 move centripetally to each other, thereby ensuring that the power cable conduit is clamped and fixed.

[0041] By repeating the above steps, power cable conduits of different diameters can be clamped and fixed at their adaptive center positions, facilitating extraction and installation. This allows the power cable to freely turn at multiple angles in space, avoiding excessive bending.

[0042] All electrical components mentioned in this article are electrically connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The detailed description of known functions and known components (e.g., the working principle of levers, the elastic compression of springs) is omitted in the specific embodiments of this disclosure. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of commercially available instruments.

[0043] In this solution, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this solution according to the specific circumstances.

[0044] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A comprehensive protection device for power cable laying, characterized in that, It includes a fixed tube body (1), a movable tube body (2), an automatic positioning and clamping assembly (3), and a universal joint (4). The universal joint (4) is connected to the front end of the fixed tube body (1) and the rear end of the movable tube body (2). The automatic positioning and clamping assembly (3) is welded to the front end of the movable tube body (2).

2. The all-around protection device for power cable laying according to claim 1, characterized in that, The universal joint (4) includes an outer ball cage (401) and an inner ball cage (402). The inner wall of the outer ball cage (401) is evenly provided with eight first limiting grooves along the circumferential direction. The outer wall of the inner ball cage (402) is evenly provided with eight second limiting grooves along the circumferential direction. Eight sets of ball bearings (403) are rotatably connected in the groove space between the inner side of the outer ball cage (401) and the outer side of the inner ball cage (402).

3. The all-around protection device for power cable laying according to claim 2, characterized in that, The rear end of the outer ball cage (401) is welded to the fixed tube (1), and the front end of the inner ball cage (402) is welded to the movable tube (2). The universal joint (4), the fixed tube (1) and the movable tube (2) are all made of stainless steel.

4. The all-around protection device for power cable laying according to claim 2, characterized in that, The interiors of the fixed tube (1), the movable tube (2), the outer ball cage (401), and the inner ball cage (402) are all hollow cavity structures. The welded inner openings of the fixed tube (1) and the outer ball cage (401), and the movable tube (2) and the inner ball cage (402) are all treated with arc surface grinding.

5. The all-around protection device for power cable laying according to claim 1, characterized in that, The automatic positioning and clamping assembly (3) includes a first fixed plate (301), one end of which is welded to the front end of the movable tube (2). Five sets of fixing bolts (302) are evenly fixed to the other end of the first fixed plate (301) along the circumferential direction. The other end of the five sets of fixing bolts (302) is fixedly connected to a third fixed plate (306). A limiting toothed rack is provided on the outer side of the top of the first fixed plate (301). Spring placement grooves are provided on the side of the first fixed plate (301) and the third fixed plate (306) that are close to each other. Three sets of grooves are evenly provided on the front edge of the third fixed plate (306) along the circumferential direction.

6. The all-around protection device for power cable laying according to claim 5, characterized in that, The first fixed disk (301) and the third fixed disk (306) are internally rotatably connected to a second fixed disk (305). A limit buckle (303) is fixedly connected to the top of the second fixed disk (305). The limit buckle (303) includes a limit slide rod fixedly connected to the top of the second fixed disk (305), a nut threaded onto the outer side of the top of the limit slide rod, and a slider with teeth slidably fitted onto the outer side of the limit slide rod. The outer side of the top of the slide rod is threaded, and the teeth of the slider are connected to the... The limiting rack on the outer side of the top of the first fixed plate (301) is engaged, and a spring (304) is fixedly connected to the outer side of the bottom end of the limiting slide rod. The other end of the spring (304) is fixedly connected to a fixing baffle. The fixing baffle is fixedly connected to the inside of the two sets of spring placement slots. The spring (304) is slidably connected to the inside of the two sets of spring placement slots. A cylindrical handle is fixedly connected to the outer right side of the second fixed plate (305). The cylindrical handle is slidably connected between the two sets of fixing bolts (302).

7. A comprehensive protection device for power cable laying according to claim 6, characterized in that, The automatic positioning and clamping assembly (3) also includes a connecting rod (307) and a rubber fixing clamp (308); the connecting rod (307) is rotatably connected to the front end of the second fixing plate (305) in three sets, and the outer ends of the three sets of connecting rods (307) are all fixed with cylindrical protrusions. The cylindrical protrusions are slidably connected to the grooves at the front edge of the third fixing plate (306). The rubber fixing clamp (308) is rotatably connected to the inner end of the connecting rod (307), and the surface of the rubber fixing clamp (308) is provided with anti-slip texture.

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