Cable gap waterproof structure for cable hole

Abstract

The utility model relates to the technical field of cable hole waterproofing, in particular to a cable gap waterproof structure for a cable hole, which comprises a cable trench, and two waterproof walls are fixedly connected to the inner wall of the cable trench; the waterproof mechanism comprises two waterproof cylinders which are in threaded connection with the inner wall of the waterproof wall; according to the device, through the thermal shrinkable sleeve with the trumpet-shaped surface, a cable can conveniently and rapidly penetrate through the thermal shrinkable sleeve, then the thermal shrinkable sleeve can be conveniently heated, the thermal shrinkable sleeve is tightly attached to the surface of the cable after being heated, and therefore preliminary water prevention of the cable and the waterproof cylinder is achieved, and through a spring and a pressing block, an elastic sleeve is stably attached to the surface of the cable; compared with an existing cable which is prone to being damaged after thermal expansion and cold contraction in waterproof mortar, the mode ensures that the elastic sleeve is always flexibly attached to the surface of the cable in the thermal expansion and cold contraction process of the cable, and therefore damage to the cable is reduced.

Description

Technical Field

[0001] This utility model relates to the field of waterproofing technology for cable holes, and in particular to a waterproofing structure for cable gaps in cable holes. Background Technology

[0002] The cable gap waterproofing structure for cable holes is a key component that waterproofs the cable holes and gaps to prevent moisture from penetrating into the cable and ensures the normal operation of the cable line in humid or underwater environments.

[0003] According to the search, the Chinese patent "A Fireproof and Waterproof Cable Trench Module" authorized announcement number "CN221741362U" describes a method where the cable passes through the main body of the cable trench and two cable holes are set on fireproof and waterproof bricks. Waterproof mortar is then filled into the gap between the cable hole and the cable to waterproof the gap between the cable and the cable hole.

[0004] In the aforementioned application, the waterproof mortar lacks flexibility, causing the cable to expand and contract due to the heat generated by the current during operation. This can easily lead to damage to the cable within the waterproof mortar, thereby affecting the cable's service life.

[0005] Therefore, a waterproof cable gap structure for cable holes is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a waterproof cable gap structure for cable holes in order to solve the above-mentioned problems, thereby improving the problem that cables are easily damaged after thermal expansion and contraction in waterproof mortar.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a waterproof structure for cable gaps in cable holes, comprising: a cable trench, wherein two waterproof walls are fixedly connected to the inner wall of the cable trench; a waterproof mechanism, wherein the waterproof mechanism includes two waterproof cylinders threadedly connected to the inner wall of the waterproof walls, both ends of the waterproof cylinders are fixedly connected to annularly distributed heat shrink sleeves, the surface of the heat shrink sleeves is funnel-shaped, the inner wall of the heat shrink sleeves is fixedly connected to an elastic sleeve, and the inner wall of the waterproof cylinders is slidably connected to several pressure blocks, the entire pressure block is in the shape of a half-cylinder, the surface of the pressure block is fixedly connected to a spring, and the other end of the spring is fixedly connected to the inner wall of the waterproof cylinder. The heat-shrink sleeve, with its flared surface, allows the cable to pass through quickly, facilitating heating of the sleeve and ensuring it adheres tightly to the cable surface. This provides initial waterproofing for both the cable and the waterproof casing. Springs and pressure blocks further ensure the elastic sleeve remains firmly attached to the cable surface, guaranteeing a tight waterproof seal between the cable and the casing. This also ensures the elastic sleeve remains flexibly fitted to the cable surface during thermal expansion and contraction, reducing cable damage.

[0008] Preferably, a support block is fixedly connected to the surface of the pressure block, and the surface of the support block is fixedly connected to the inner wall of the waterproof cylinder. The support block provides support for the pressure block, ensuring that it can stably abut against the elastic sleeve.

[0009] Preferably, two iron rods are slidably connected to the upper surface of the waterproof wall, and the lower surface of the iron rods is engaged with the inner wall of the waterproof cylinder.

[0010] Preferably, a magnetic ring is embedded in the upper surface of the waterproof wall, and the surface of the magnetic ring is magnetically attracted to the surface of the iron rod. The magnetic ring and the iron rod lock the waterproof cylinder in place, ensuring its stable installation on the waterproof wall and thus guaranteeing stable waterproofing of the cable.

[0011] Preferably, the surface of the waterproof wall is fixedly connected with ring-shaped fixing rods. These fixing rods restrict the installation position of the waterproof cylinder, preventing it from detaching from the waterproof wall during threaded installation.

[0012] Preferably, the surface of the support block is shaped like an "X", and the support block is a rubber component.

[0013] Preferably, one end of the waterproof cylinder is fixedly connected to two handles.

[0014] The beneficial effects of this utility model are:

[0015] 1. The heat shrink sleeve with a funnel-shaped surface facilitates the quick passage of the cable through the sleeve, and also facilitates heating of the sleeve. This allows the heat shrink sleeve to adhere tightly to the cable surface after heating, thus achieving initial waterproofing of the cable and the waterproof casing. Through springs and pressure blocks, the elastic sleeve is stably and tightly attached to the cable surface, ensuring a tight waterproof seal between the cable and the waterproof casing. Compared to existing methods where cables are easily damaged by thermal expansion and contraction within the waterproof mortar, this method ensures that the elastic sleeve remains flexibly attached to the cable surface during thermal expansion and contraction, thereby reducing cable damage.

[0016] 2. The magnetic ring and iron rod lock the waterproof cylinder, ensuring its stable installation on the waterproof wall and thus guaranteeing stable waterproofing of the cable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the waterproof mechanism structure of this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0020] Figure 4 for Figure 2 A magnified view of B in the middle.

[0021] In the diagram: 1. Cable trench; 2. Waterproof wall; 3. Waterproof mechanism; 31. Waterproof cylinder; 32. Heat shrink sleeve; 33. Elastic sleeve; 34. Pressure block; 35. Spring; 36. Support block; 37. Iron rod; 38. Magnetic ring; 39. Fixing rod; 310. Handle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In practical implementation: such as Figure 1-4 As shown, a cable gap waterproofing structure for cable holes includes: a cable trench 1, with two waterproof walls 2 fixedly connected to the inner wall of the cable trench 1; a waterproofing mechanism 3, comprising two waterproof cylinders 31 threadedly connected to the inner wall of the waterproof walls 2, with annularly distributed heat-shrinkable sleeves 32 fixedly connected to both ends of the waterproof cylinders 31. The surface of the heat-shrinkable sleeves 32 is funnel-shaped, and an elastic sleeve 33 is fixedly connected to the inner wall of the heat-shrinkable sleeves 32. Several pressure blocks 34 are slidably connected to the inner wall of the waterproof cylinders 31. The pressure blocks 34 are shaped like half-cylinders, and springs 35 are fixedly connected to the surface of the pressure blocks 34. The other end of the springs 35 is fixedly connected to the inner wall of the waterproof cylinders 31, and two handles 310 are fixedly connected to one end of the waterproof cylinders 31. The elastic sleeves 33 are rubber components, and the heat-shrinkable sleeves 32 are radiation-crosslinked polyolefin components.

[0024] When waterproofing cable gaps is required, after installing the cable trench 1 at a suitable location, use a special hole saw to make two threaded holes in the waterproof wall 2. Thread the waterproof cylinder 31 into the threaded holes. Install the cable bracket in the cable trench 1 using bolts or other methods. Lay the cable on the cable bracket. Then, pass the cable sequentially through the flared heat shrink sleeve 32 and the elastic sleeve 33. The elastic force of the spring 35 pushes the pressure block 34 to move, causing the half-cylinder-shaped pressure block 34 to abut against the surface of the elastic sleeve 33. This ensures that the elastic sleeve 33 is always under thrust, making the inner wall of the elastic sleeve 33 flexibly adhere to the cable surface, thus ensuring the cable is tightly installed inside the waterproof cylinder 31. After the cable installation is complete, the worker uses a hot air gun to heat the surface of the heat shrink sleeve 32, causing it to shrink and adhere tightly to the cable surface, thereby sealing and waterproofing the gap between the cable and the waterproof cylinder 31.

[0025] like Figure 3As shown, a support block 36 is fixedly connected to the surface of the pressure block 34. The surface of the support block 36 is fixedly connected to the inner wall of the waterproof cylinder 31. The surface of the support block 36 is shaped like an "X" and is a rubber component. The support block 36 is used to support the pressure block 34, preventing the weight of the elastic sleeve 33 from being transferred to the pressure block 34 after being subjected to the cable, thus preventing the two pressure blocks 34 from easily separating. The support block 36 is used to ensure that the pressure block 34 stably abuts against the surface of the elastic sleeve 33.

[0026] like Figure 4 As shown, two iron rods 37 are slidably connected to the upper surface of the waterproof wall 2. The lower surface of the iron rods 37 is engaged with the inner wall of the waterproof cylinder 31. A magnetic ring 38 is embedded in the upper surface of the waterproof wall 2, and the surface of the magnetic ring 38 is magnetically attracted to the surface of the iron rods 37.

[0027] Push the iron rod 37 down and engage it inside the waterproof cylinder 31, so that the end of the iron rod 37 is attracted to the top of the magnetic ring 38, so that the iron rod 37 is stably engaged inside the waterproof cylinder 31, and the waterproof cylinder 31 is stably limited, so that the waterproof cylinder 31 is stably installed on the waterproof wall 2.

[0028] like Figure 4 As shown, the surface of the waterproof wall 2 is fixedly connected with a ring of fixed rods 39. The waterproof cylinder 31 advances through the internal thread of the waterproof wall 2. When one end of the waterproof cylinder 31 abuts against the surface of the fixed rod 39, the handle 310 stops rotating, so that the waterproof cylinder 31 does not excessively disengage from the inner wall of the waterproof wall 2 within the internal thread.

[0029] In use, the waterproof cylinder 31 is threaded into the threaded hole using the handle 310, with one end of the waterproof cylinder 31 abutting against the surface of the fixing rod 39. The handle 310 is stopped from rotating, and the iron rod 37 is pushed down and engaged inside the waterproof cylinder 31, causing the end of the iron rod 37 to adhere to the top of the magnetic ring 38, thus limiting the position of the waterproof cylinder 31. The cable bracket is then installed in the cable trench 1 using bolts or other methods. The cable is laid on the cable bracket, and then the cable is sequentially passed through the flared heat shrink sleeve 32 and the elastic sleeve. Inside the sleeve 33, the elastic force of the spring 35 pushes the pressure block 34 to move, so that the pressure block 34, which is in the shape of a half-cylinder, abuts against the surface of the elastic sleeve 33, thereby keeping the elastic sleeve 33 under constant thrust. This causes the inner wall of the elastic sleeve 33 to flexibly adhere to the surface of the cable, thus ensuring that the cable is tightly installed inside the waterproof sleeve 31. After the cable is installed, the worker uses a hot air gun to heat the surface of the heat shrink sleeve 32, causing the heat shrink sleeve 32 to shrink and adhere tightly to the surface of the cable, thereby sealing and waterproofing the gap between the cable and the waterproof sleeve 31.

[0030] It should be noted that the cable trench 1, waterproof wall 2, waterproof cylinder 31, iron rod 37 and magnetic ring 38 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs, and will not be elaborated here.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waterproof structure for cable gaps in cable holes, characterized in that, include: Cable trench (1), the inner wall of cable trench (1) is fixedly connected with two waterproof walls (2); The waterproof mechanism (3) includes two waterproof cylinders (31) threaded to the inner wall of the waterproof wall (2). Both ends of the waterproof cylinder (31) are fixedly connected to annularly distributed heat shrink sleeves (32). The surface of the heat shrink sleeves (32) is trumpet-shaped. An elastic sleeve (33) is fixedly connected to the inner wall of the heat shrink sleeves (32). Several pressure blocks (34) are slidably connected to the inner wall of the waterproof cylinder (31). The pressure block (34) is in the shape of a half-cylinder. A spring (35) is fixedly connected to the surface of the pressure block (34). The other end of the spring (35) is fixedly connected to the inner wall of the waterproof cylinder (31).

2. The waterproof cable gap structure for cable holes according to claim 1, characterized in that: The surface of the pressure block (34) is fixedly connected to a support block (36), and the surface of the support block (36) is fixedly connected to the inner wall of the waterproof cylinder (31).

3. The waterproof cable gap structure for cable holes according to claim 1, characterized in that: Two iron rods (37) are slidably connected to the upper surface of the waterproof wall (2), and the lower surface of the iron rods (37) is engaged with the inner wall of the waterproof cylinder (31).

4. A waterproof cable gap structure for cable holes according to claim 3, characterized in that: A magnetic ring (38) is embedded in the upper surface of the waterproof wall (2), and the surface of the magnetic ring (38) is magnetically attracted to the surface of the iron rod (37).

5. A waterproof cable gap structure for cable holes according to claim 1, characterized in that: The surface of the waterproof wall (2) is fixedly connected with ring-shaped fixing rods (39).

6. A waterproof cable gap structure for cable holes according to claim 2, characterized in that: The surface of the support block (36) is "X" shaped, and the support block (36) is a rubber component.

7. A waterproof cable gap structure for cable holes according to claim 1, characterized in that: Two handles (310) are fixedly connected to one end of the waterproof tube (31).

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