Waterproof cable drawing head structure assembly

Abstract

The utility model belongs to the field of cable waterproofing, and provides a waterproof cable drawing head structure assembly, which comprises a drawing head with a drawing end, and at least one accommodating cavity is arranged in the drawing head; the waterproof cover is connected to the end part, far away from the traction end, of the traction head and extends out of the traction head, so that the cable conductor movably connected in the accommodating cavity can be wrapped by the waterproof cover; and the silicone structural adhesive covers the inner and outer walls of the waterproof cover, the accommodating cavity and the drawing head so as to seal the cable conductor and the waterproof cover and connect the waterproof cover to the end part of the drawing head. Compared with the prior art, the cable provided by the utility model has the advantages that through the protection measures of multiple layers (the waterproof cover, the silicone structural adhesive and the heat shrink tube), convenience is provided for the installation and use of the traction head, the waterproof performance of the cable can be greatly improved, and the service life of the cable is prolonged; and the normal use of the cable is effectively prevented from being influenced by water entering when the cable is laid.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cable waterproof field, concretely relates to a waterproof cable traction head structure assembly. BACKGROUND

[0002] In the process of cable laying, usually adopt mechanical traction mode, use the wire rope of winch and the traction net cover or traction head of cable first end connection, this method can effectively pull the cable from one point to another point, applicable to various environments and distance.

[0003] For the current cable traction head, with the increase of cable length and self weight, especially for the medium and high voltage cable, the traditional traction net cover gradually shows its limitations, so that the traction head becomes the common choice. However, due to the complex construction environment and often in water environment, the traditional traction head lacks effective waterproof function, which causes the cable end to enter water in the environment with water, affects normal use, and also easily shortens the overall service life of the cable end. SUMMARY

[0004] In view of the above-mentioned deficiencies existing in the prior art, the technical problem to be solved by the utility model lies in: a waterproof cable traction head structure assembly with simple overall structure, improved installation efficiency and safe and reliable waterproof sealing safety is provided.

[0005] The utility model solves the technical scheme that the technical problem adopts, and provides a waterproof cable traction head structure assembly, which comprises: a traction head with a traction end, at least one accommodating cavity is arranged in the traction head;

[0006] A waterproof cover is connected to the end of the traction head away from the traction end and extends to the outside of the traction head, so that the cable conductor movably connected in the accommodating cavity can be wrapped by the waterproof cover;

[0007] Silicone structural adhesive is covered on the waterproof cover, the accommodating cavity and the inner and outer walls of the traction head to seal the cable conductor and the waterproof cover, and connect the end of the waterproof cover to the traction head;

[0008] A release layer is wound on the outer wall of the shaped silicone structural adhesive, and the release layer is used for insulating protection of the traction head and limiting displacement of the waterproof cover;

[0009] A heat shrink tube is movably sleeved on the release layer, and the heat shrink tube can be uniformly shrunk and tightly adhered to the waterproof cover and the traction head after being heated by a blowtorch, so as to prevent water vapor from entering the cable conductor.

[0010] In the waterproof cable traction head structure assembly, the anti-off layer is composed of an insulating self-adhesive tape and a plurality of steel wires, the traction head surface coated with the silicone structure adhesive is tightly wound with a layer of the insulating self-adhesive tape, and the plurality of steel wires are used for binding and fixing the cable conductor and the cable core.

[0011] In the waterproof cable traction head structure assembly, the accommodating cavity is provided with three parts and is annularly and equidistantly distributed in the traction head.

[0012] In the waterproof cable traction head structure assembly, the insulating self-adhesive tape is wound and covered with a length of at least 500 mm.

[0013] In the waterproof cable traction head structure assembly, the steel wires are bound in three layers, and the interval of the steel wires in each layer is 80 mm, and each layer of the steel wires is bound at least 2 turns.

[0014] In the waterproof cable traction head structure assembly, the heat shrink tube is composed of a fixing layer and a protection layer, the fixing layer is 600 mm, the protection layer is 1000 mm, and the fixing layer and the protection layer are sequentially sleeved on the waterproof cover and the traction head.

[0015] In the waterproof cable traction head structure assembly, the traction head comprises a main body part and a lifting ring part, the accommodating cavity is formed in the main body part, and the waterproof cover is connected to the main body part; the lifting ring part is movably connected to the main body part and is used for connecting an external traction machine.

[0016] In the waterproof cable traction head structure assembly, a connecting block is arranged on the lifting ring part, a connecting hole is formed in the main body part, and the connecting block is screw-connected in the connecting hole.

[0017] In the waterproof cable traction head structure assembly, a plurality of bolt holes are further formed in the main body part, the bolt holes are perpendicular and communicate with the accommodating cavity, and the cable conductor is locked in the main body part.

[0018] In the waterproof cable traction head structure assembly, the connecting abutting position of the lifting ring part and the main body part can be connected and fixed through welding.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] (1) The waterproof cable traction head structure assembly of the utility model provides convenience for the installation and use of the traction head, greatly improves the waterproof performance of the cable, prolongs the service life of the cable, and effectively avoids the water inflow during cable laying and affects the normal use.

[0021] (2) The silicone structural adhesive has good waterproof performance and bonding performance, not only realizes the sealing between the cable conductor and the waterproof cover, but also plays a role in fixing the waterproof cover, ensuring that it is tightly attached to the traction head.

[0022] (3) The double-layer protection structure of the heat shrink tube ensures that the entire traction head and the cable connection are fully covered and protected, reducing potential damage to the cable caused by external factors and improving the durability and reliability of the cable. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic diagram of the present application;

[0024] Figure 2 is a schematic diagram of the installation structure of the accommodating cavity in the main body.

[0025] In the figure, 1, traction head; 10, main body; 100, accommodating cavity; 101, connecting hole; 102, bolt hole; 11, lifting ring part; 110, connecting block; 111, welding point; 2, waterproof cover; 3, silicone structural adhesive; 4, insulating self-adhesive tape. DETAILED DESCRIPTION

[0026] The following is a specific embodiment of the present application and further describes the technical solution of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0028] For example, Figures 1 to 2As shown, the utility model relates to a waterproof cable traction head 1 structure assembly, including traction head 1, waterproof cover 2, silicone structural adhesive 3, prevent delamination and heat shrink tube. Wherein, traction head 1 has traction end, and be equipped with at least one accommodating cavity 100 in traction head 1 inside;Waterproof cover 2 is connected to the end of traction head 1 away from traction end, and extends to traction head 1 outside, so that the cable conductor that is movably connected in accommodating cavity 100 can be wrapped through waterproof cover 2;Silicone structural adhesive 3 covers in waterproof cover 2, accommodating cavity 100 and the inside and outside wall of traction head 1, to seal cable conductor and waterproof cover 2, and waterproof cover 2 is connected to the end of traction head 1;Prevent delamination is wound on the outer wall of the silicone structural adhesive 3 after shaping, for insulation protection traction head 1, and limit waterproof cover 2 and produce displacement;Heat shrink tube movably sets up in prevent delamination, and heat shrink tube can be uniformly shrunk and closely adhered to waterproof cover 2 and traction head 1 after heating by blow lamp, to hinder water vapor into cable conductor.

[0029] Specifically, during installation, it is necessary to ensure that the cable conductor (with cable core) is correctly placed in the accommodating cavity 100 inside the traction head 1, which can be processed and manufactured according to different specifications of the cable conductor, and the waterproof cover 2 is connected to the side of the traction head 1 away from the traction end, as shown in Figure 1 At the same time, the waterproof cover 2 extends to cover part of the external area of the traction head 1 (i.e. the cable conductor), ensuring that the cable conductor is wrapped and protected by the waterproof cover 2. It is worth noting that the inner cavity and outer wall of the waterproof cover 2 and the accommodating cavity 100 can be sealed in advance by the silicone structural adhesive 3, that is, after applying the silicone structural adhesive 3 on the inner / outer surface of the entire traction head 1 and the waterproof cover 2, the waterproof performance and adhesive performance of the silicone structural adhesive 3 itself can be utilized to enhance the connection stability between the components and provide a key waterproof sealing function, effectively preventing moisture from entering the cable conductor. After the silicone structural adhesive 3 is cured and shaped, the prevent delamination layer is wound on the outer surface thereof, which mainly provides additional insulation protection and limits the positional movement of the waterproof cover 2 relative to the traction head 1, enhancing the stability of the overall structure. Finally, the heat shrink tube is sleeved outside the prevent delamination layer, and a blow lamp or other tool is used for heating treatment thereof. As the temperature rises, the heat shrink tube uniformly shrinks and closely adheres to the waterproof cover 2 and the traction head 1, further preventing external moisture from entering the cable. As can be seen, the cable traction head 1 structure greatly improves the waterproof capability of the cable traction head 1 through the design of multiple layers of protection, enhances the mechanical strength of the entire structure, reduces the risk of damage caused by external factors, prolongs the service life, and ensures that it can maintain good working condition in harsh environments.

[0030] The prevent delamination layer is composed of an insulation self-adhesive tape 4 and a plurality of steel wires, and the surface of the traction head 1 coated with the silicone structural adhesive 3 can be tightly wound with a layer of insulation self-adhesive tape 4. The plurality of steel wires are used to bind and fix the waterproof cover 2 and the cable conductor.

[0031] After the outer layer of the aforementioned silicone structural adhesive 3 has set, in this embodiment, a layer of insulating self-adhesive tape 4 needs to be tightly wrapped around the surface of the traction head 1 coated with silicone structural adhesive 3. This utilizes the waterproof and insulating properties of the insulating self-adhesive tape 4 (the insulating self-adhesive tape 4 has excellent waterproof performance, effectively preventing moisture intrusion and protecting electrical components from moisture and water damage. This is beneficial for preventing wire oxidation, reducing contact resistance, and extending service life) and insulating protection (the insulating self-adhesive tape 4 has excellent insulating properties, preventing leakage and ensuring electrical safety; its substrate is typically a soft polyvinyl chloride (PVC) film coated with...). The rubber-type pressure-sensitive adhesive forms a strip of insulating material with an adhesive surface. Its self-adhesive properties (the self-adhesive insulating tape 4 is self-adhesive, allowing it to be easily pasted onto electrical components or joints requiring protection without the need for other adhesives, making operation simple) as well as its mechanical strength and dielectric properties (the tape has good mechanical strength and dielectric properties, enabling it to work stably in various environments and is suitable for the protection of various electrical circuits) ensure the overall insulation protection effect of the waterproof cover 2 and the traction head 1 on the cable conductor, helping to form a tighter and flatter foundation, facilitating subsequent wire binding operations.

[0032] Preferably, in this embodiment, the wrapping coverage area of ​​the insulating self-adhesive tape 4 is the traction head 1 (e.g., Figure 1 The position of the traction head 1 (without wrapping the right end, i.e., the lifting ring is exposed and does not need to be wrapped) should be between about 300mm from the waterproof cover. More preferably, in this embodiment, the length of the insulating self-adhesive tape 4 wrapped and covered is at least 500mm.

[0033] More preferably, in this embodiment, the movement can also begin 80mm from the waterproof cover and proceed in a direction away from the traction head 1 and the waterproof cover 2 (i.e., towards...). Figure 1 (At a location not shown on the left) the cable conductor (including the cable core and outer sheath) is securely bound with steel wire in sequence. Preferably, in this embodiment, the steel wire is bound in three layers, with each layer spaced 80mm apart, and each layer is bound at least 2 turns. The steel wire binding increases the strength of the entire cable conductor sheath, greatly preventing the possibility of loosening, thereby reducing the risk of displacement due to vibration or external tension, and improving the overall structural stability.

[0034] The heat shrink tubing consists of a fixing layer and a protective layer. The fixing layer is 600mm long and the protective layer is 1000mm long. The fixing layer and the protective layer are sequentially fitted onto the waterproof cover 2 and the traction head 1.

[0035] After the steel wire is firmly tied, the heat-shrinkable tube can be sleeved. With the continuous heating of the torch (not shown in the figure), the heat-shrinkable tube uniformly shrinks and tightly adheres to the surface of the outer sheath and the traction head 1 (after shrinking, the heat-shrinkable tube should cover the traction head 1 hanging ring). It should be noted that two heat-shrinkable tubes (lengths of 600mm and 1000mm) are required in this embodiment, which are sleeved from short to long and from inside to outside (not shown in the figure). The main function of the fixed layer heat-shrinkable tube (600mm) is to provide fastening and preliminary waterproof sealing, to ensure that the connection between the waterproof cover 2 and the traction head 1 is more stable, and to reduce the risk of displacement caused by vibration or tension. The protective layer heat-shrinkable tube (1000mm) further enhances the mechanical strength of the overall structure, especially in complex environmental conditions, effectively resisting external impact and wear. The design of the double-layer heat-shrinkable tube significantly improves the waterproof capability of the cable traction head 1, and the double protection mechanism of the fixed layer and the protective layer makes it difficult for moisture to penetrate into the cable, ensuring that the waterproof effect is good even in high humidity or water immersion environment.

[0036] The traction head 1 includes a main body part 10 and a hanging ring part 11. The accommodation cavity 100 is formed in the main body part 10, and the waterproof cover 2 is connected to the main body part 10. The hanging ring part 11 is movably connected to the main body part 10 and is used to connect an external traction machine.

[0037] As shown in Figure 1 , the hanging ring part 11 (i.e. the traction head 1 hanging ring referred to in the above) in this embodiment is installed on the main body part 10 by a movable connection method, which can flexibly adjust the angle to ensure the best stress state during traction and reduce the stress concentration problem caused by angle mismatch. Therefore, this hanging ring part 11 simplifies the connection operation between the traction head 1 and the traction machine, so that the construction personnel can complete the assembly more quickly. In addition, preferably, three accommodation cavities 100 are provided on the main body part 10, and the ring-shaped equidistantly distributed accommodation cavities 100 can adapt to different specifications of cables, for example, one accommodation cavity 100 can adapt to a single-core cable, and three accommodation cavities 100 can adapt to the waterproof function of a three-core cable, effectively improving the flexibility and application range during the overall use process.

[0038] Preferably, the embodiment further provides a connecting block 110 on the hanging ring part 11, and a connecting hole 101 (i.e. a threaded hole, and not communicated with the above-mentioned accommodation cavity 100) is formed in the main body part 10. The threaded connection between the connecting block 110 and the connecting hole 101 makes the connection between the hanging ring part 11 and the main body part 10 more stable, which can effectively disperse the traction force and reduce the risk of structural damage caused by single-point stress. This installation method is simple to operate, providing convenience for subsequent maintenance and replacement of workers, thereby prolonging the service life of the cable traction head 1 structure.

[0039] Further preferably, the connecting abutting position of the hanger ring part 11 and the main body part 10 can be connected and fixed by welding, after the threaded cooperation of the connecting block 110 and the connecting hole 101 is realized, at this moment, the hanger ring part 11 and the right end of the main body part 10 are in the posture of mutual abutting (for reference Figure 1 ), the welding point 111 can be formed between the two by the welding equipment (not shown in the figure), so as to further improve the stability of the connection between the two, and also provide guarantee for the stability of the winch when pulling the hanger ring part 11.

[0040] Further preferably, a plurality of bolt holes 102 are also formed on the main body part 10, as shown in Figure 1 , each bolt hole 102 is perpendicular and communicates with the accommodating cavity 100, it is worth noting that the outer surface of the traction head 1 in the embodiment adopts a streamlined design, which can effectively avoid the knocking phenomenon of the cable during installation, and the part of the cable conductor extending into the accommodating cavity 100 adopts an internal thread design, which can effectively prevent the cable conductor from slipping, and the bolt in the bolt hole 102 abuts against the cable conductor, thereby absolutely limiting the displacement of the cable conductor in the radial direction, ensuring that the cable conductor can be locked in the main body part 10, and the outer sleeve heat shrink tube ensures that the cable end is completely sealed, thereby ensuring that water vapor does not enter the cable core or the cable conductor during storage and installation.

[0041] It should be noted that the description such as "first", "second", "one" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features indicated or the number of the technical features indicated. Therefore, the features defined as "first" and "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited. The terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0043] The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or changes in the specific embodiments described herein can occur to those skilled in the art to which the application pertains without departing from the spirit of the application, and it is understood that such modifications or changes are to be considered as within the scope of the application as defined by the appended claims.

Claims

1. A waterproof cable pulling head structure assembly, characterized in that, The utility model relates to a cable head waterproof structure, which comprises the following parts: a traction head with a traction end, wherein at least one accommodating cavity is arranged inside the traction head; a waterproof cover connected to the end of the traction head away from the traction end and extending to the outside of the traction head, so that the cable conductor movably connected in the accommodating cavity can be wrapped through the waterproof cover; a silicone structural adhesive covering the inside and outside walls of the waterproof cover, the accommodating cavity and the traction head to seal the cable conductor and the waterproof cover and connect the waterproof cover to the end of the traction head; a detachment prevention layer wound on the outside wall of the shaped silicone structural adhesive, which is used for insulating protection of the traction head and limiting displacement of the waterproof cover; a heat shrink tube movably sleeved on the detachment prevention layer, which can be uniformly shrunk and tightly adhered to the waterproof cover and the traction head after being heated by a blowtorch to prevent water vapor from entering the cable conductor.

2. A waterproof cable pulling head structure assembly according to claim 1, characterized in that, The detachment prevention layer is composed of an insulating self-adhesive tape and a plurality of steel wires, and the traction head surface coated with the silicone structural adhesive can be tightly wound with a layer of the insulating self-adhesive tape; the plurality of steel wires are used for binding and fixing the cable conductor and the cable core.

3. A waterproof cable pulling head structure assembly according to claim 1, characterized in that, The accommodating cavity is provided with three parts and is annularly and equidistantly distributed in the traction head.

4. A waterproof cable pulling head structure assembly according to claim 2, wherein, The insulating self-adhesive tape has a winding and covering length of at least 500 mm.

5. A waterproof cable pull head structure assembly according to claim 2, wherein, The steel wires are bound in three layers, and the interval between each layer of the steel wires is 80 mm, and each layer of the steel wires is bound at least 2 times.

6. A waterproof cable pull head structure assembly according to claim 1, wherein, The heat shrink tube is composed of a fixing layer and a protective layer, the fixing layer is 600 mm, the protective layer is 1000 mm, and the fixing layer and the protective layer are sequentially sleeved on the waterproof cover and the traction head.

7. A waterproof cable pulling head structure assembly according to claim 1, wherein, The traction head comprises a main body part and a lifting ring part, the accommodating cavity is formed in the main body part, and the waterproof cover is connected to the main body part; the lifting ring part is movably connected to the main body part and is used for connecting an external traction machine.

8. A waterproof cable pull head structure assembly according to claim 7, characterized in that, A connecting block is arranged on the lifting ring part, a connecting hole is formed in the main body part, and the connecting block is threadedly connected in the connecting hole.

9. A waterproof cable pull head structure assembly according to claim 7, wherein, A plurality of bolt holes are also formed in the main body part, the bolt holes are perpendicular and communicate with the accommodating cavity to lock the cable conductor in the main body part.

10. The waterproof cable pull head structure assembly of claim 8, wherein, The connecting abutting position of the lifting ring part and the main body part can be fixed by welding.

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