A sealing protection device suitable for low-voltage cable connection

Abstract

The present invention belongs to the technical field of cable connection devices, and specifically relates to a sealing protection device suitable for low-voltage cable connections; it comprises an outer sealing sleeve, which is composed of a large-diameter sleeve, a reducing cone tube and a small-diameter sleeve, the end of the large-diameter sleeve is connected with a sealing end plate, and the two outer sealing sleeves are connected by the cooperation of a connecting ring sleeve and the sealing end plate; the end of the small-diameter sleeve is connected with a sealing end head, and the sealing end head is connected with an end sealing joint; a positioning circular plate and an inner sealing sleeve are arranged inside the connection of the two outer sealing sleeves, a positioning hole is arranged on the positioning circular plate, and the inner sealing sleeve passes through the positioning hole and is slidably connected to the positioning circular plate; the inner sealing sleeve comprises a connecting tube body, and a fixed jack is arranged on the connecting tube body; the present invention has a reasonable structure and is easy to use, can effectively assist staff in connecting low-voltage cables, and can effectively seal and protect the connection, while ensuring the connection strength and improving the working efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of cable connection devices, and in particular relates to a sealing protection device suitable for a low-voltage cable connection. Background Art

[0002] The low-voltage cable consists of three parts: a core, an insulation layer and a protective layer. The core is used to conduct current and is generally made of multiple copper wires or multiple aluminum wires twisted together. There are several types of low-voltage cables, such as single-core, double-core, three-core and four-core. Double-core cables are used for single-phase lines, three-core and four-core cables are used for three-phase three-wire lines and three-phase four-wire lines respectively, and single-core cables can be used in single-phase lines or three-phase lines as needed; when connecting low-voltage cables, it is necessary to seal the connections to avoid leakage accidents caused by exposed connections, and at the same time ensure the connection strength of the connections. Therefore, it is very necessary to provide a sealing and protective device suitable for low-voltage cable connections that can effectively assist staff in connecting low-voltage cables, effectively seal and protect the connections, ensure the connection strength, and improve work efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a sealing protection device suitable for low-voltage cable connections, which can effectively assist workers in connecting low-voltage cables, effectively seal and protect the connections, while ensuring connection strength and improving work efficiency.

[0004] The object of the present invention is achieved as follows: A sealing protection device suitable for low-voltage cable connection includes an outer sealing sleeve, the outer sealing sleeve is composed of a large-diameter sleeve, a reducing cone tube and a small-diameter sleeve, the end of the large-diameter sleeve is connected with a sealing end plate, and the two outer sealing sleeves are connected by a connecting ring sleeve and the sealing end plate; the end of the small-diameter sleeve is connected with a sealing end head, and the sealing end head is connected with an end sealing joint;

[0005] A positioning circular plate and an inner sealing sleeve are provided inside the connection of the two outer sealing sleeves, the positioning circular plate is provided with a positioning hole, and the inner sealing sleeve passes through the positioning hole and is slidably connected with the positioning circular plate; according to the number of inner cores of the cable, the inner sealing sleeve can be one or more, and the number of the corresponding positioning holes corresponds to it;

[0006] The inner sealing sleeve comprises a connecting tube body, and a fixing plug hole is arranged on the connecting tube body.

[0007] Furthermore, the connecting ring sleeve is composed of two half-ring sleeves, and the half-ring sleeves connect the ends of the two outer sealing sleeves by snapping on the outside of the two sealing end plates; the ends of the half-ring sleeves are provided with connecting side plates, and the corresponding connecting side plates can be fixedly connected by bolts, so that the two half-ring sleeves are connected as one.

[0008] Furthermore, the inner side surface of the connecting ring sleeve and the outer side surface of the sealing end plate are both inclined surfaces, and a sealing ring is arranged between the two sealing end plates.

[0009] Furthermore, an end sealing sleeve is provided in the sealing end head, one end of the end sealing joint is inserted into the sealing end head and threadedly connected thereto, and the end sealing sleeve is squeezed during the process of inserting one end of the end sealing joint into the sealing end head.

[0010] Furthermore, an inner tube is provided at the end of the end sealing joint, a thread is provided on the outer side surface of the inner tube, and the inner side surface is an oblique cone surface; an inner cone ring sleeve is provided at the end of the end sealing ring sleeve, the outer side surface of the inner cone ring sleeve is an oblique cone surface, and the inner cone ring sleeve can be inserted into the inner tube; during the process of inserting the inner tube into the sealing end head, the inner cone ring sleeve is inserted into the inner tube.

[0011] Furthermore, both ends of the connecting tube body are provided with tube body joints, and the ends of the connecting tube body are connected to locking ends through the tube body joints, and the end faces of the locking ends are provided with through holes; the core of the cable can extend into the locking ends and the connecting tube body through the through holes.

[0012] Furthermore, an operating end cap is provided at one end of the locking end, an inner locking sleeve is provided inside the locking end, and one end of the inner locking sleeve is inserted into the pipe body joint; the locking end can be twisted through the operating end cap to connect it to the pipe body joint.

[0013] Furthermore, a locking cone cap is arranged at one end of the inner locking sleeve inserted into the pipe body joint, and a plurality of separation slits are evenly arranged on the locking cone cap along its circumferential direction; the side surface of the locking cone cap is divided into a plurality of arc plates by the separation slits.

[0014] Furthermore, a plurality of the fixing holes are arranged on the connecting pipe body along its circumference.

[0015] Beneficial effects of the present invention: The present invention is a sealing protection device suitable for low-voltage cable connections, wherein the outer sealing sleeve is composed of a large-diameter sleeve, a reducing cone tube and a small-diameter sleeve, and the end of the large-diameter sleeve is connected with a sealing end plate, and the two outer sealing sleeves can be connected by the cooperation of a connecting ring sleeve and the sealing end plate; the sealing end head at the end of the small-diameter sleeve can be connected to the end sealing joint to seal and strengthen the connection; a positioning circular plate and an inner sealing sleeve are arranged in a long sleeve formed by the connection of the two outer sealing sleeves, and the inner sealing sleeve passes through the positioning hole arranged on the positioning circular plate and is slidably connected with the positioning sleeve; according to the number of wire cores in the cable, the inner sealing sleeve can be one or more, and the number of the corresponding positioning holes corresponds to it; a fixing socket is arranged on the connecting tube body of the inner sealing sleeve, and the wire core can be fixed through it by a locking bolt. When connecting the ends of two low-voltage cables, the outer sealing sleeve and the end sealing joint are respectively sleeved on the ends of the two cables, the inner sealing sleeve is inserted into the positioning circular plate, and the ends of the wire cores in the cable are inserted into the inner sealing sleeve, and the wire cores in the cable are fixedly connected to the inner sealing sleeve by the cooperation of the locking bolt and the fixed jack on the inner sealing sleeve, and the number of wire cores in the cable is consistent with the number of the inner sealing sleeves; the large-diameter sleeves of the two outer sealing sleeves are brought close together, and the sealing end plates are connected together by a connecting ring sleeve; finally, the sealing end is connected to the small-diameter sleeve end of the inner sealing sleeve, so as to complete the sealing protection of the connection between the two cables; the sealing protection device suitable for the low-voltage cable connection of the present invention has a reasonable structure and is easy to use, can effectively assist the staff in connecting the low-voltage cables, and effectively seals and protects the connection, while ensuring the connection strength and improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 The present invention is a three-dimensional structural schematic diagram of a sealing protection device suitable for low-voltage cable connections.

[0018] Figure 2 The present invention is a schematic structural diagram of a sealing protection device suitable for low-voltage cable connections.

[0019] Figure 3 The present invention is a schematic cross-sectional view of a sealing protection device suitable for low-voltage cable connections.

[0020] Figure 4 The figure is a side view structural schematic diagram of a sealing protection device suitable for low-voltage cable connections.

[0021] Figure 5 for Figure 2 Schematic diagram of the structure in the AA direction.

[0022] Figure 6 The present invention is a structural schematic diagram of a sealing joint connection at the end of a sealing protection device suitable for low-voltage cable connections.

[0023] Figure 7 The present invention is a structural schematic diagram of a sealing protection device connecting ring sleeve suitable for low-voltage cable connection.

[0024] Figure 8 The present invention is a structural schematic diagram of an inner sealing sleeve arranged inside a sealing protection device suitable for a low-voltage cable connection.

[0025] Fig. 9 The present invention is a structural schematic diagram of a single inner sealing sleeve of a sealing protection device suitable for low-voltage cable connections.

[0026] Fig.10 The present invention is a schematic structural diagram of a cross-section of a sealing sleeve in a sealing protection device suitable for a low-voltage cable connection.

[0027] Fig.11 The present invention is a schematic diagram of the structure of a locking sleeve in a sealing protection device suitable for low-voltage cable connections. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0032] like Figure 1-11 As shown, a sealing protection device suitable for low-voltage cable connection of the present invention comprises an outer sealing sleeve 1, the outer sealing sleeve 1 is composed of a large-diameter sleeve 5, a reducing cone 6 and a small-diameter sleeve 7, the end of the large-diameter sleeve 5 is connected with a sealing end plate 13, and the two outer sealing sleeves 1 are connected by a connecting ring 2 and the sealing end plate 13; the end of the small-diameter sleeve 7 is connected with a sealing end head 3, and the sealing end head 3 is connected with an end sealing joint 4;

[0033] A positioning circular plate 9 and an inner sealing sleeve 10 are provided inside the connection of the two outer sealing sleeves 1. The positioning circular plate 9 is provided with a positioning hole. The inner sealing sleeve 10 passes through the positioning hole and is slidably connected to the positioning circular plate 9. According to the number of inner cores of the cable, there can be one or more inner sealing sleeves 10, and the number of the corresponding positioning holes corresponds to it.

[0034] The inner sealing sleeve 10 includes a connecting tube body 15 , and a fixing plug hole 16 is provided on the connecting tube body 15 .

[0035] When connecting the ends of two low-voltage cables, the outer sealing sleeve 1 and the end sealing joint 4 are respectively sleeved on the ends of the two cables, the inner sealing sleeve 10 is inserted into the positioning circular plate 9, and the ends of the wire cores of the cable are inserted into the inner sealing sleeve 10. The locking bolts cooperate with the fixed sockets 16 on the inner sealing sleeve 10 to fix the wire cores in the cable to the inner sealing sleeve 10. The number of wire cores in the cable is consistent with the number of the inner sealing sleeve 10; the large-diameter sleeves 5 of the two outer sealing sleeves 1 are brought close together, and the sealing end plates 13 are connected together through the connecting ring sleeve 2; finally, the sealing end 3 is connected to the end of the small-diameter sleeve 7 of the inner sealing sleeve 10 to complete the sealing protection of the connection between the two cables.

[0036] Furthermore, in one embodiment, the connecting ring sleeve 2 is composed of two half-ring sleeves, and the half-ring sleeves are connected to the ends of the two outer sealing sleeves 1 by snapping on the outside of the two sealing end plates 13; the ends of the half-ring sleeves are provided with connecting side plates, and after the two half-ring sleeves are snapped on the outside of the two sealing end plates 13, the corresponding connecting side plates can be fixedly connected by bolts, so that the two half-ring sleeves are connected as a whole, thereby realizing the snap-fit ​​connection of the two sealing end plates 13.

[0037] Furthermore, in one embodiment, the inner side surface of the connecting ring sleeve 2 and the outer side surface of the sealing end plate 13 are both inclined surfaces, and a sealing ring 14 is arranged between the two sealing end plates 13; when the two half ring sleeves are connected, the sealing ring 14 between the two sealing end plates 13 is squeezed by the buckling extrusion thereof, thereby realizing a sealed connection between the two outer sealing sleeves 1.

[0038] Furthermore, in one embodiment, an end sealing ring sleeve 8 is provided in the sealing end head 3, one end of the end sealing joint 4 is inserted into the sealing end head 3 and threadedly connected thereto, and during the process of inserting one end of the end sealing joint 4 into the sealing end head 3, the end sealing ring sleeve 8 is squeezed so that it is pressed tightly against the outer surface of the cable, thereby realizing a sealed and fixed connection between the end of the outer sealing sleeve 1 and the cable.

[0039] Furthermore, in one embodiment, an inner tube 11 is provided at the end of the end sealing joint 4, and a thread is provided on the outer side surface of the inner tube 11, and the inner side surface is an oblique cone surface; an inner cone ring sleeve 12 is provided at the end of the end sealing sleeve 8, and the outer side surface of the inner cone ring sleeve 12 is an oblique cone surface, and the inner cone ring sleeve 12 can be inserted into the inner tube 11; the end sealing joint 4 can be threadedly connected with the sealing end head 3 through the inner tube 11 provided at its end, and the inner cone ring sleeve 12 is inserted into the inner tube 11 during the process of inserting the inner tube 11 into the sealing end head 3, so that the inner tube 11 squeezes the inner cone ring sleeve 12 to make it pressed tightly against the outer surface of the cable.

[0040] Furthermore, in one embodiment, both ends of the connecting tube body 15 are provided with tube body joints 18, and the end of the connecting tube body 15 is connected to a locking end 17 through the tube body joints 18, and a through hole 21 is provided on the end surface of the locking end 17; the wire core of the cable can extend into the locking end 17 and the connecting tube body 15 through the through hole 21, so as to be fixed to the connecting tube body 15 by passing the locking bolt through the fixing hole 16; by connecting the locking end 17 to the tube body joints 18 at the end of the connecting tube body 15, the connection between the wire core and the connecting tube body 15 can be sealed.

[0041] Furthermore, in one embodiment, an operating end cap 20 is provided at one end of the locking end 17, an inner locking sleeve 19 is provided inside the locking end 17, and one end of the inner locking sleeve 19 is inserted into the pipe body joint 18; the locking end 17 is screwed through the operating end cap 20 to connect it with the pipe body joint 18, and during this process, the inner locking sleeve 19 is pushed so that one end of it extends into the pipe body joint 18 and squeezes the cable core, thereby further strengthening and sealing the connection between the connecting tube body 15 and the core.

[0042] Furthermore, in one embodiment, a locking cone cap 22 is provided at one end of the inner locking sleeve 19 inserted into the pipe body joint 18, and a plurality of partition slits 23 are evenly arranged on the locking cone cap 22 along its circumferential direction; the side of the locking cone cap 22 is divided into a plurality of arc plates by the partition slits 23, and can be extended into the pipe body joint 18 and fit tightly with the wire core under the push and squeeze of the locking end 17, thereby further improving the locking stability and sealing.

[0043] Furthermore, in one embodiment, a plurality of the fixing holes 16 are provided on the connecting tube body 15 along its circumferential direction; when the cable has multiple cores, the fixing holes 16 at appropriate angle positions can be selected to fix the cores.

[0044] In summary, the present invention is a sealing protection device suitable for low-voltage cable connections, wherein the outer sealing sleeve 1 is composed of a large-diameter sleeve 5, a reducing cone tube 6 and a small-diameter sleeve 7, and the end of the large-diameter sleeve 5 is connected with a sealing end plate 13, and the two outer sealing sleeves 1 can be connected by the cooperation of the connecting ring sleeve 2 and the sealing end plate 13; the sealing end head 3 at the end of the small-diameter sleeve 7 can be connected with the end sealing joint 4 to seal and strengthen the connection; a positioning circular plate 9 and an inner sealing sleeve 10 are arranged in the long sleeve formed by the connection of the two outer sealing sleeves 1, and the inner sealing sleeve 10 passes through the positioning holes arranged on the positioning circular plate 9 and is slidably connected with it; according to the number of wire cores in the cable, the inner sealing sleeve 10 can be one or more, and the number of the corresponding positioning holes corresponds to it; a fixing plug hole 16 is arranged on the connecting tube body 15 of the inner sealing sleeve 10, and the wire core can be fixed through it by a locking bolt. When connecting the ends of two low-voltage cables, the outer sealing sleeve 1 and the end sealing joint 4 are respectively sleeved on the ends of the two cables, the inner sealing sleeve 10 is inserted into the positioning circular plate 9, and the ends of the wire cores of the cable are inserted into the inner sealing sleeve 10. The locking bolt cooperates with the fixed jack 16 on the inner sealing sleeve 10 to fix the wire cores in the cable to the inner sealing sleeve 10, and the number of wire cores in the cable is consistent with the number of the inner sealing sleeve 10; the large-diameter sleeves 5 of the two outer sealing sleeves 1 are brought close together, and the sealing end plates 13 are connected together through the connecting ring sleeve 2; finally, the sealing end 3 is connected to the end of the small-diameter sleeve 7 of the inner sealing sleeve 10, that is, the sealing protection of the connection between the two cables is completed; the sealing protection device suitable for the low-voltage cable connection of the present invention has a reasonable structure and is easy to use. It can effectively assist the staff in connecting the low-voltage cables, effectively seal and protect the connection, and at the same time ensure the connection strength and improve the working efficiency.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A sealing protection device suitable for low-voltage cable connections, characterized in that: The invention comprises an outer sealing sleeve (1), wherein the outer sealing sleeve (1) is composed of a large-diameter sleeve (5), a reducing cone tube (6) and a small-diameter sleeve (7); the end of the large-diameter sleeve (5) is connected to a sealing end plate (13); the two outer sealing sleeves (1) are connected by a connecting ring (2) and the sealing end plate (13); the end of the small-diameter sleeve (7) is connected to a sealing end head (3), and the sealing end head (3) is connected to an end sealing joint (4); A positioning circular plate (9) and an inner sealing sleeve (10) are provided inside the connection between the two outer sealing sleeves (1); a positioning hole is provided on the positioning circular plate (9); and the inner sealing sleeve (10) passes through the positioning hole and is slidably connected to the positioning circular plate (9); The inner sealing sleeve (10) comprises a connecting tube body (15), and a fixing plug hole (16) is provided on the connecting tube body (15); An end sealing ring sleeve (8) is arranged in the sealing end head (3), one end of the end sealing joint (4) is inserted into the sealing end head (3) and is threadedly connected thereto, and the end sealing ring sleeve (8) is squeezed during the process of inserting one end of the end sealing joint (4) into the sealing end head (3); The end of the end sealing joint (4) is provided with an inner insert tube (11), the outer side surface of the inner insert tube (11) is provided with a thread, and the inner side surface is an inclined cone surface; the end of the end sealing ring sleeve (8) is provided with an inner insert cone ring sleeve (12), the outer side surface of the inner insert cone ring sleeve (12) is an inclined cone surface, and the inner insert cone ring sleeve (12) can be inserted into the inner insert tube (11).

2. A sealing protection device suitable for low-voltage cable connection according to claim 1, characterized in that: The connecting ring sleeve (2) is composed of two half ring sleeves, and the half ring sleeves are fastened to the outside of the two sealing end plates (13) to connect the ends of the two outer sealing sleeves (1).

3. A sealing protection device suitable for low-voltage cable connection as claimed in claim 2, characterized in that: The inner side surface of the connecting ring sleeve (2) and the outer side surface of the sealing end plate (13) are both inclined surfaces, and a sealing ring (14) is provided between the two sealing end plates (13).

4. A sealing protection device suitable for low-voltage cable connection according to claim 1, characterized in that: Both ends of the connecting tube body (15) are provided with tube body joints (18), and the ends of the connecting tube body (15) are connected to locking ends (17) via the tube body joints (18), and a through hole (21) is provided on the end surface of the locking end (17).

5. A sealing protection device suitable for low-voltage cable connection as claimed in claim 4, characterized in that: An operating end cap (20) is provided at one end of the locking end head (17), an inner locking sleeve (19) is provided inside the locking end head (17), and one end of the inner locking sleeve (19) is inserted into the interior of the pipe body joint (18).

6. A sealing protection device suitable for low-voltage cable connection as claimed in claim 5, characterized in that: One end of the inner locking sleeve (19) inserted into the pipe body joint (18) is provided with a locking cone cap (22), and a plurality of separation slits (23) are evenly arranged on the locking cone cap (22) along its circumferential direction.

7. A sealing protection device suitable for low-voltage cable connection as claimed in claim 1, characterized in that: The connecting pipe body (15) is provided with a plurality of fixing insertion holes (16) along its circumferential direction.

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