A cable head protection device

Abstract

The utility model provides a kind of cable head protection device, the purpose is to solve the technical problem of poor sealing and explosion-proof performance of existing cable head protection device.The device includes protective shell and the flexible sealing element and locking element movably arranged at both ends of the protective shell;The protective shell includes detachably connected first shell and second shell, the first shell both ends are equipped with first connector, both sides have first connecting piece extending outward, the second shell both ends are equipped with second connector, both sides have second connecting piece extending outward, the first connector and second connector are connected to form connecting portion;The sealing element is sleeved on the outer surface of cable and located in the connecting portion;The locking element is connected with the connecting portion, for compressing the sealing element and making it deformed seal.The utility model is convenient to install, construction efficiency is high, and through multiple sealing and multiple fixing measures, improve the buried cable moisture-proof, anti-damage ability, ensure the stable operation of cable.

Description

Technical Field

[0001] This utility model relates to the field of cable accessories technology, and in particular to a cable head protection device. Background Technology

[0002] In the field of cable head protection, especially for buried cables and explosion-proof areas, traditional integrated cable protection devices use a one-piece molded structure that must be pre-installed before cable laying. This makes subsequent protection modifications to completed cable heads extremely difficult. On-site construction often requires cutting the cable and remaking the joint, and the integrated structure makes rapid installation after cable head fabrication inconvenient and inefficient. While some split-type protection devices on the market solve the installation convenience problem, they still have the following drawbacks: 1. Poor sealing performance, unable to effectively prevent moisture intrusion, leading to cable head malfunctions due to moisture, affecting the normal operation and service life of the cable; 2. Insufficient shell connection strength, unable to provide reliable explosion-proof protection for the cable head. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a cable head protection device that solves the technical problems of poor sealing and explosion-proof performance of existing cable head protection devices.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A cable head protection device includes: a protective shell and flexible sealing elements and locking elements movably disposed at both ends of the protective shell; the protective shell includes a first shell and a second shell that are detachably connected, the first shell having first connectors at both ends and first connecting pieces extending outward on both sides, the second shell having second connectors at both ends and second connecting pieces extending outward on both sides, the first connectors and the second connectors abutting to form a connecting portion; the sealing element is sleeved on the outer surface of the cable and located inside the connecting portion; the locking element is connected to the connecting portion and is used to press the sealing element to deform and seal it.

[0006] This utility model's protective device features a two-piece design with a first and second housing. After the cable head is fabricated, the two housings can be directly attached to the cable, facilitating installation and increasing construction efficiency. Simultaneously, through multiple sealing and securing measures, it enhances the buried cable's moisture and damage resistance, ensuring stable cable operation and reducing maintenance costs and safety risks.

[0007] Optionally, sealing gaskets are provided on the opposing surfaces of the first connecting piece and / or the second connecting piece. When the two housings are fixed together, the sealing structure at the mating surfaces will form a good seal.

[0008] Optionally, the first connecting piece is provided with a plurality of first connecting holes; the second connecting piece is provided with a plurality of second connecting holes whose positions correspond to the positions of the first connecting holes; the first connecting piece and the second connecting piece are fixed together by fastening bolts passing through the connecting holes.

[0009] Optionally, the first and second housings have an arched structure on the side away from the connecting piece.

[0010] Optionally, the protective shell is made of fiberglass material.

[0011] Optionally, the seal is a sealing ring made of rubber.

[0012] Optionally, the locking member is threadedly connected to the connecting part.

[0013] Optionally, the locking element is a gland head.

[0014] Optionally, the inner wall of the connecting part is provided with an annular groove, and the sealing element is partially embedded in the groove.

[0015] Optionally, the length of the seal is equal to or greater than the length of the connection portion.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The protective device of this utility model is designed as a two-piece structure with the first and second shells. After the cable head is made, the two shells can be directly attached to the cable, which is convenient for installation and has high construction efficiency.

[0018] 2. This utility model's protective device enhances the moisture-proof and damage-proof capabilities of buried cables through multiple sealing and fixing measures, ensuring stable cable operation and reducing maintenance costs and safety risks. Specifically, firstly, a sealing structure is set at the mating surface of the two split shells. When the two shells are fixed by fastening bolts, the sealing structure at the mating surface undergoes compression deformation under the pre-tightening force of the bolts, forming the first seal. Secondly, flexible sealing elements are fitted at both ends of the cable. When locked by locking elements, the sealing elements deform and seal under the action of the locking elements and the connection part of the protective device. That is, the sealing elements not only wrap the outer surface of the cable but also squeeze and cooperate with the inner wall of the connection part to form a second seal. Thus, the two seals create a tight sealed space inside the protective device, effectively enhancing the sealing effect of the protective device and effectively preventing moisture intrusion, achieving good moisture-proof performance. Finally, on the basis of fixing the two shells with fastening bolts, fasteners are used at both ends of the cable to achieve a second locking, which can effectively prevent energy leakage in the event of an explosion and meet the explosion-proof requirements of explosion-proof areas. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is an exploded structural diagram of the present invention.

[0022] Figure 3 This is a bottom view of the first housing in this utility model.

[0023] Figure 4 This is a side view of the first housing in this utility model.

[0024] Reference numerals: 1. First housing; 11. First connector; 12. First connecting piece; 121. First connecting hole; 2. Second housing; 21. Second connector; 22. Second connecting piece; 3. Seal; 4. Locking element; 5. Cable. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of this utility model application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0026] In the description of the embodiments of this utility model application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side" etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing the embodiments of this utility model application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this utility model application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model application according to the specific circumstances.

[0029] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of this utility model application. To simplify the disclosure of the embodiments of this utility model application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of this utility model application. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this utility model application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0031] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] like Figures 1-4 As shown in the figure, the present utility model application provides a cable head protection device, including a protective shell sealed by a first shell 1 and a second shell 2, and flexible sealing members 3 and locking members 4 movably disposed at both ends of the protective shell.

[0033] Specifically, the protective shell includes a detachably connected first shell 1 and a second shell 2. The first shell 1 has first connectors 11 at both ends and first connecting pieces 12 extending outwards from its side edges; the second shell 2 has second connectors 21 at both ends and second connecting pieces 22 extending outwards from its side edges. When the first connectors 11 and 21 are joined together, they form a connecting portion with a channel. More specifically, the first connectors 11 and 21 have a semi-circular cross-section. When the first shell 1 and the second shell 2 are joined together, a cavity is formed inside the first shell 1 and the second shell 2 to accommodate the cable 5. The semi-circular first connectors 11 and 21 form a circular channel that communicates with the cavity inside the shell. Both ends of the cable 5 are located within this channel and extend outwards.

[0034] Furthermore, sealing elements 3 are respectively fitted onto the outer surfaces of both ends of the cable 5, and the sealing elements 3 are located inside the connecting part, that is, the position of the sealing element 3 corresponds to the position of the first connector 11 and the second connector 21 on the same side. After the sealing element 3 is fitted, the first housing 1 and the second housing 2 are first joined together, and then the locking element 4 is connected to the connecting part, thereby pressing the sealing element between the inner wall of the connector and the outer wall of the cable 5. The sealing is achieved by deforming the sealing element, which can effectively enhance the sealing effect, prevent energy leakage in the event of an explosion, and meet the explosion-proof requirements of the explosion-proof area.

[0035] Optionally, the first connecting piece 12 and the second connecting piece 22 are fixed together by fastening bolts (not shown in the figure). For example, the first connecting piece 12 has a plurality of first connecting holes 121 evenly spaced, and the second connecting piece 22 also has a plurality of second connecting holes corresponding to the positions of the first connecting holes 121. That is, the first connecting holes 121 and the second connecting holes are arranged symmetrically in pairs. In use, multiple sets of fastening bolts pass through the corresponding connecting holes to achieve a fixed connection between the first housing 1 and the second housing 2.

[0036] Optionally, a sealing structure is provided between the first housing 1 and the second housing 2. For example, the sealing structure is a sealing gasket, which is provided on the opposing surfaces of the first connecting piece 12 and / or the second connecting piece 22. The sealing gasket ensures the airtightness of the protective shell after the first housing 1 and the second housing are mated. The sealing gasket is not shown in the figure. Using existing technology, the sealing gasket can be embedded or pasted onto the connecting piece. Correspondingly, a through hole is provided at the position of the sealing gasket corresponding to the connecting hole.

[0037] Optionally, the protective case is made of fiberglass material.

[0038] Optionally, the side of the first housing 1 and the second housing 2 away from the connecting piece has an arched structure.

[0039] Optionally, the seal 3 is a sealing ring made of rubber material, with the inner diameter of the sealing ring matching the outer diameter of the cable and the outer diameter of the sealing ring matching the inner diameter of the connection formed by the first and second connectors.

[0040] Optionally, the locking member 4 is threadedly connected to the connecting part. For example, the outer walls of the first connecting head 11 and the second connecting head 21 have external threads, that is, the outer wall of the connecting part has external threads, and the inner wall of the locking member 4 has internal threads that mate with the external threads. In use, by screwing the locking member 4 onto the connecting part, the connecting head is pressed against the sealing member 3.

[0041] Optionally, locking element 4 uses a gland head.

[0042] As an example, the cable 5 is placed inside the second housing 2, and then a sealing element 3 is fitted onto each end of the cable 5, with the sealing element 3 positioned in the second connector 21. The first housing 1 is then joined to the second housing 2, and a series of fastening bolts are passed through the corresponding connection holes to achieve a fixed connection. Finally, the locking element 4 is threaded onto the connection portions at both ends of the protective housing. This protective device, through its sealing structure, sealing element 3, fastening bolts, and locking element 4, achieves good sealing and fixing effects, improves the moisture and damage resistance of buried cables, ensures stable cable operation, reduces maintenance costs and safety risks, and has a simple structure and is easy to operate. Furthermore, by replacing the flexible sealing element 3 with one of different thicknesses, it can be adapted to cables of different specifications, effectively expanding the application range of the protective device.

[0043] In one embodiment, the length of the seal 3 is equal to or greater than the length of the connector, that is, the length of the seal 3 is greater than or equal to the length of the connector. In another embodiment, the inner wall of the formed connector is provided with an annular groove, the length of the seal 3 is less than the length of the connector, and the thickness portion of the seal 3 is embedded in the groove.

[0044] In one embodiment, the first connecting piece 12 is provided with one or more positioning posts, and the second connecting piece 22 corresponding to the positioning posts is provided with blind holes. In use, when it is necessary to close the first housing and the second housing, the positioning posts are inserted into the blind holes to facilitate the alignment of the first housing and the second housing, that is, to facilitate the alignment of the connecting holes on the two housings, thereby facilitating the operation of tightening bolts and improving construction efficiency.

[0045] It should be noted that all components not shown in the figure adopt existing technology, and the size of each component shown in the figure is schematic, and the proportion between each component is also schematic. It is only used to express the idea of ​​this technical solution and does not involve the limitation of the size in the actual embodiment.

[0046] Any aspects not described in detail in this embodiment are techniques known in the art.

[0047] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A cable head protection device, characterized in that, include: A protective shell and flexible sealing and locking components movably disposed at both ends of the protective shell; The protective shell includes a first shell and a second shell that can be detachably connected. The first shell has a first connector at both ends and a first connecting piece extending outward on both sides. The second shell has a second connector at both ends and a second connecting piece extending outward on both sides. The first connector and the second connector are joined together to form a connecting part. The sealing element is sleeved on the outer surface of the cable and located inside the connection portion; The locking member is connected to the connecting part and is used to press the sealing member to deform and seal it.

2. The cable head protection device according to claim 1, characterized in that, A sealing gasket is provided on the opposing surfaces of the first connecting piece and / or the second connecting piece.

3. The cable head protection device according to claim 1 or 2, characterized in that: The first connecting piece is provided with a plurality of first connecting holes; The second connecting piece is provided with a plurality of second connecting holes whose positions correspond to the positions of the first connecting holes; The first connecting piece and the second connecting piece are fixed together by fastening bolts passing through the connecting hole.

4. The cable head protection device according to claim 1, characterized in that, The first and second housings have an arched structure on the side away from the connecting piece.

5. The cable head protection device according to claim 1, characterized in that, The protective shell is made of fiberglass material.

6. The cable head protection device according to claim 1, characterized in that, The sealing element is a sealing ring made of rubber.

7. The cable head protection device according to claim 1, characterized in that, The locking element is threadedly connected to the connecting part.

8. The cable head protection device according to claim 1, characterized in that, The locking element uses a gland head.

9. The cable head protection device according to claim 1, characterized in that, The inner wall of the connecting part is provided with an annular groove, and the sealing element is partially embedded in the groove.

10. The cable head protection device according to claim 1, characterized in that, The length of the seal is equal to or greater than the length of the connection.

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