Butt joint device of combined type line conductor fire-resistant cable

Abstract

The utility model discloses a butt joint device of a combined type line conductor fire-resistant cable, and relates to the technical field of cable butt joint devices. The cable comprises a plurality of wire conductors, the plurality of wire conductors are formed by single wire drawing and then are formed by twisting, the outer wall of each wire conductor is sleeved with a mica tape fireproof layer, and the outer wall of each mica tape fireproof layer is sleeved with an insulation sleeve. According to the utility model, the single wires are drawn and formed through the combined type wire conductor and then are twisted and formed, so that the condition that the twisted conductor needs to be cold-drawn and compressed by a mold during production of an original second-class circular twisted and compressed conductor is not needed, the heating value during twisting is small, and the mica tape fireproof layer and the insulating sleeve are arranged, so that the surface of the combined type wire conductor is smooth and burr-free; the problem that the insulating property of the cable is reduced due to the fact that burrs are easily generated on the outer layer of the conductor and a mica tape fire-resistant layer or an insulating layer is punctured when the conductor is tightly pressed in a circular twisting mode originally is solved, and the reliability and the fire-resistant stability of the cable are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cable butt joint device technical field, especially relate to a butt joint device of combined wire conductor fire -resistant cable. BACKGROUND

[0002] The stranded and compressed conductor in the cable conductor is twisted and compressed, and the profiled wire is twisted and formed through a unique process pre-twist and shaping die, and the butt joint of the cable conductor needs to use a butt joint device for butt joint, but the following problems exist during use:

[0003] 1. Some existing cable conductor production needs to mold cold-drawing and compression of stranded conductor, and the heat generation is large during twisting, in addition, the contact surface between the outer layer and the secondary outer layer of the conductor is increased, the contact resistance is reduced, the fire resistance of some cable protective layer is not high, burrs may be generated on the outer layer of the conductor, the protective layer is pierced, thereby causing the insulation performance of the cable to be reduced, and the butt joint device is used to butt joint two cables during laying, the existing butt joint device may leak when encountering rain erosion, thereby affecting the performance of the cable.

[0004] Therefore, a butt joint device of combined wire conductor fire -resistant cable is provided. INVENTION CONTENTS

[0005] The utility model discloses a butt joint device of combined wire conductor fire -resistant cable, which solves the problems of the prior art that the heat generation is large during twisting of the stranded conductor, the contact surface between the outer layer and the secondary outer layer of the conductor is increased, the contact resistance is reduced, the fire resistance of some cable protective layer is not high, burrs may be generated on the outer layer of the conductor, the protective layer is pierced, thereby causing the insulation performance of the cable to be reduced, and the butt joint device is used to butt joint two cables during laying, the existing butt joint device may leak when encountering rain erosion, thereby affecting the performance of the cable.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A combined wire conductor fire -resistant cable, comprising:

[0008] Wire conductor, a plurality of wire conductors are twisted and formed after being drawn and formed by single wire, and the outer wall of the wire conductor is sleeved with a mica tape fire -resistant layer, and the outer wall of the mica tape fire -resistant layer is sleeved with an insulating sleeve for composing a cable.

[0009] The utility model provides an interface device, which comprises an interface assembly, the interface assembly comprises a first interface plate installed at the connection of two wire conductors, the upper end of the first interface plate is rotationally connected with a second interface plate and is fixedly connected through bolts, the inner wall of the first interface plate is fixedly connected with a first clamping plate, the two sides of the upper end of the second interface plate are threadedly connected with adjusting bolts, the lower end of the second interface plate is provided with a second clamping plate, the inner walls of the first clamping plate and the second clamping plate are fixedly connected with insulating layers, the lower end of the adjusting bolt is rotationally connected in the inner part of the upper end of the second clamping plate, and the position of the second clamping plate is adjusted;

[0010] The utility model provides a sealing assembly, which comprises a first sealing plate fixedly installed on the inner walls of the two sides of the first interface plate, the upper end of the first sealing plate is rotationally connected with a second sealing plate, the inner walls of the first sealing plate and the second sealing plate are fixedly connected with rubber sealing pads, and the inner walls of the rubber sealing pads are tightly attached to the outer walls of the insulating sleeves.

[0011] The utility model provides a protection assembly installed on the outside of the interface assembly, which prevents water from entering the cable connection.

[0012] In a possible design, the protection assembly comprises a first protection cover installed on the outer wall of the interface assembly, the front end of the first protection cover is provided with a second protection cover, the outer wall of the lower end of the first interface plate is fixedly connected with a plurality of limiting rods, the inner walls of the lower ends of the first protection cover and the second protection cover are fixedly connected with arc-shaped clamping blocks, the limiting rods are in clamping and matching connection with the arc-shaped clamping blocks, and the first protection cover and the second protection cover are limited.

[0013] In a possible design, the outer wall of the upper end of the first protection cover is fixedly connected with a clamping groove, the outer wall of the upper end of the second protection cover is fixedly connected with a clamping plate, the clamping plate is in clamping and matching connection with the clamping groove and is fixedly connected through bolts.

[0014] In a possible design, the inner part of the upper end of the first sealing plate is slidably connected with a push rod, the two sides of the upper end of the first sealing plate are provided with limiting grooves, the two sides of the inner part of the first sealing plate at the lower end of the limiting groove are provided with first sliding grooves, the middle part of the inner part of the first sealing plate at the lower end of the limiting groove is provided with a second sliding groove, the two sides of the lower end of the second sealing plate are fixedly connected with limiting blocks, the limiting blocks are in clamping and matching connection with the limiting grooves, and the second sealing plate is limited.

[0015] In a possible design, the lower end of the limiting block is located in the inner part of the first sliding groove, the outer walls of the two sides of the push rod are fixedly connected with first limiting plates, the first limiting plates are in sliding connection with the first sliding grooves, and the limiting blocks are pushed.

[0016] In a possible design, the outer wall of the push rod is fixedly connected with a second limiting plate near the middle part, the second limiting plate is in sliding connection with the second sliding groove, and the outer wall of the middle part of the push rod is sleeved with a spring for resetting the push rod.

[0017] In the application, the plurality of wire conductors are first drawn into single wires and then twisted into the shape. This twisting method makes the contact between the wire conductors more compact and reduces the contact resistance. The outer wall of the wire conductor is sleeved with a mica tape fireproof layer, which provides good fireproof performance and ensures that the cable can still work normally in extreme conditions such as fire. The outer wall of the mica tape fireproof layer is further sleeved with an insulating sleeve for further protecting the cable and preventing current leakage or short circuit. When two cables need to be connected, the butt joint assembly is used. First, the first butt joint plate is installed at the connection of the two wire conductors. The first clamp plate is fixed on the inner wall of the first butt joint plate. The adjusting bolts are threadedly connected to the two sides of the upper end of the second butt joint plate. The second clamp plate is arranged at the lower end of the second butt joint plate. By rotating the adjusting bolts, the position of the second clamp plate can be adjusted to clamp and fix the two cables. The inner walls of the first clamp plate and the second clamp plate are fixed with insulating layers to ensure the electrical insulation performance of the butt joint. The first sealing plate and the second sealing plate are fixedly installed on the inner walls of the two sides of the first butt joint plate. The inner walls of the first sealing plate and the second sealing plate are fixed with rubber sealing gaskets. When the second sealing plate is rotated and attached to the first sealing plate, the inner wall of the rubber sealing gasket is tightly attached to the outer wall of the insulating sleeve to form a seal, thereby preventing moisture, dust and other impurities from entering the cable connection and ensuring the long-term stable operation of the cable. The limiting block is in clamping connection with the limiting groove to limit the second sealing plate. The push rod is used to push the limiting block, so that the first sealing plate and the second sealing plate can be opened and closed, improving the convenience of installation. The first protective cover and the second protective cover are installed on the outer wall of the butt joint assembly. The limiting rods are in clamping connection with the arc-shaped clamping blocks to limit the first protective cover and the second protective cover. The clamping plates are in clamping connection with the clamping grooves and are fixedly connected by bolts to ensure the stability of the protective assembly. The design of the protective assembly further prevents moisture and other impurities from entering the cable connection, improving the waterproof performance of the cable.

[0018] In the utility model, the single wire is drawn into the shape and then twisted into the shape through the combined wire conductor. The original two types of circular twisted and compressed conductors need to be die drawn and compressed during production. The heat generation is small during twisting. In addition, the contact surface between the outer layer and the secondary outer layer of the conductor is increased, and the contact resistance is reduced. The mica tape fireproof layer and the insulating sleeve are arranged. Since the surface of the combined wire conductor is smooth and has no burrs, the burrs on the outer layer of the conductor are prevented from piercing the mica tape fireproof layer or the insulating layer, which leads to the decline of the insulation performance of the cable. The reliability and fireproof stability of the cable are improved.

[0019] The utility model discloses a combined type line conductor fire -resistant cable's butt joint device, through setting up butt joint subassembly when needing to butt joint two cables, install first butt joint board at the junction of two line conductors, then rotate second butt joint board and pass through bolt fixed connection, can adjust the position of second clamping plate through the rotation adjusting bolt, thereby clamping and fixed two cables, the inner wall of first clamping plate and second clamping plate is fixed with insulating layer, ensure the electrical insulation performance of butt joint, and the design of sealing assembly makes the cable connection place have good sealing performance, can prevent moisture, dust and other impurities from entering the cable connection place, guarantees the long -term stable operation of cable, and the design of protection assembly further improves the waterproof performance of cable, even in humid or underwater environment, cable can keep normal work, provides more possibility for various application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be needed to use the drawing of the embodiment to introduce briefly, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0021] Figure 1 It is the explosion three-dimensional structure schematic view of an embodiment of the utility model;

[0022] Figure 2 It is the butt joint subassembly three-dimensional structure schematic view of an embodiment of the utility model;

[0023] Figure 3 It is the internal three-dimensional structure schematic view of butt joint subassembly of an embodiment of the utility model;

[0024] Figure 4 It is the sealing assembly three-dimensional structure schematic view of an embodiment of the utility model;

[0025] Figure 5 It is the line conductor three-dimensional structure schematic view of an embodiment of the utility model;

[0026] Figure 6 It is the three-dimensional structure schematic view of an embodiment of the utility model.

[0027] In the figure: 1, wire conductor; 2, mica tape fireproof layer; 3, insulating sleeve; 4, first butt plate; 5, second butt plate; 6, first clamping plate; 7, second clamping plate; 8, adjusting bolt; 9, insulating layer; 10, first sealing plate; 11, second sealing plate; 12, rubber sealing gasket; 13, limiting block; 14, limiting groove; 15, push rod; 16, first sliding groove; 17, second sliding groove; 18, spring; 19, first limiting plate; 20, second limiting plate; 21, first protective cover; 22, second protective cover; 23, limiting rod; 24, arc-shaped clamping block; 25, clamping plate; 26, clamping groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] In the description of the utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] In order to keep the following description of the embodiments of the utility model clear and concise, the utility model omits the detailed description of known functions and known components.

[0031] Embodiment 1: refer to Figures 1-6 A kind of cable and butt joint device, comprising:

[0032] Wire conductor 1, a plurality of wire conductors 1 are formed by single wire drawing and then stranded, and the outer wall of the wire conductor 1 is sleeved with a mica tape fireproof layer 2, and the outer wall of the mica tape fireproof layer 2 is sleeved with an insulating sleeve 3, to form a cable;

[0033] A kind of butt joint device, comprising: butt joint assembly, butt joint assembly includes the first butt plate 4 installed at the connection of two wire conductors 1, the upper end of the first butt plate 4 is rotatably connected with the second butt plate 5 and is fixedly connected by bolt, the inner wall of the first butt plate 4 is fixedly connected with the first clamping plate 6, the upper end of the second butt plate 5 is screw-connected with adjusting bolt 8 on both sides, the lower end of the second butt plate 5 is provided with the second clamping plate 7, the inner wall of the first clamping plate 6 and the second clamping plate 7 is fixedly connected with the insulating layer 9, the lower end of the adjusting bolt 8 is rotatably connected in the interior of the upper end of the second clamping plate 7, for adjusting the position of the second clamping plate 7;

[0034] The sealing assembly comprises a first sealing plate 10 fixedly installed on the inner wall of the first butt joint plate 4 on both sides, the upper end of the first sealing plate 10 is rotationally connected with a second sealing plate 11, the inner wall of the first sealing plate 10 and the second sealing plate 11 is fixedly connected with a rubber sealing gasket 12, and the inner wall of the rubber sealing gasket 12 is tightly attached to the outer wall of the insulation sleeve 3.

[0035] The protection assembly is installed outside the butt joint assembly and is used for preventing water from entering the cable connection.

[0036] In the technical scheme, the plurality of wire conductors 1 are formed by single-wire drawing and then twisted, and the twisting manner makes the contact between the wire conductors more close, and reduces the contact resistance; the outer wall of the wire conductor 1 is sleeved with the mica tape fireproof layer 2, which provides good fireproof performance and ensures that the cable can still work normally in extreme conditions such as fire; the outer wall of the mica tape fireproof layer 2 is further sleeved with the insulation sleeve 3, which is used for further protecting the cable and preventing current leakage or short circuit; when two cables need to be butt jointed, the butt joint assembly is used, first, the first butt joint plate 4 is installed at the connection of the two wire conductors 1, the position of the second clamping plate 7 can be adjusted by rotating the adjusting bolt 8, so as to clamp and fix the two cables, the inner wall of the first clamping plate 6 and the second clamping plate 7 is fixedly connected with the insulation layer 9, which ensures the electrical insulation performance of the butt joint; the first sealing plate 10 and the second sealing plate 11 are provided, the inner wall of the first sealing plate 10 and the second sealing plate 11 is fixedly connected with the rubber sealing gasket 12, when the second sealing plate 11 is rotated and attached to the first sealing plate 10, the inner wall of the rubber sealing gasket 12 is tightly attached to the outer wall of the insulation sleeve 3, forming a seal, so as to prevent moisture, dust and other impurities from entering the cable connection, and ensure the long-term stable operation of the cable.

[0037] In one aspect of the embodiment, as shown in Figure 1 The protection assembly comprises a first protection cover 21 installed on the outer wall of the butt joint assembly, the front end of the first protection cover 21 is provided with a second protection cover 22, the outer wall of the lower end of the first butt joint plate 4 is fixedly connected with a plurality of limiting rods 23, the inner wall of the lower end of the first protection cover 21 and the second protection cover 22 is fixedly connected with an arc-shaped clamping block 24, the limiting rod 23 is in clamping cooperation with the arc-shaped clamping block 24, and the first protection cover 21 and the second protection cover 22 are limited.

[0038] In the technical scheme, the first protection cover 21 and the second protection cover 22 are limited by the clamping cooperation between the limiting rod 23 and the arc-shaped clamping block 24.

[0039] In one aspect of the embodiment, as shown in Figure 1As shown in the drawings, the outer wall of the upper end of the first protective cover 21 is fixedly connected with a clamping groove 26, and the outer wall of the upper end of the second protective cover 22 is fixedly connected with a clamping plate 25, which is clamped and matched with the clamping groove 26 and is fixedly connected through bolts.

[0040] In the above technical solution, the clamping plate 25 is clamped and matched with the clamping groove 26 and is fixedly connected through bolts, thereby ensuring the stability of the protective assembly.

[0041] The present application can be used in the field of cable docking device, and can also be used in other fields applicable to the present application

[0042] Embodiment 2: improvement based on embodiment 1: a docking device for a combined wire conductor fire-resistant cable, which is used in the field of cable docking device,

[0043] In one aspect of the present embodiment, as shown in the drawings, Figure 4 the inner side of the upper end of the first sealing plate 10 is slidingly connected with a push rod 15, both sides of the upper end of the first sealing plate 10 are provided with a limiting groove 14, both sides of the inner side of the first sealing plate 10 at the lower end of the limiting groove 14 are provided with a first sliding groove 16, the middle part of the inner side of the first sealing plate 10 at the lower end of the limiting groove 14 is provided with a second sliding groove 17, and both sides of the lower end of the second sealing plate 11 are fixedly connected with a limiting block 13, which is clamped and matched with the limiting groove 14.

[0044] In the above technical solution, the limiting block 13 is clamped and matched with the limiting groove 14, which is used for limiting the second sealing plate 11.

[0045] In one aspect of the present embodiment, as shown in the drawings, Figure 4 the lower end of the limiting block 13 is located in the inner side of the first sliding groove 16, the outer wall of both sides of the push rod 15 is fixedly connected with a first limiting plate 19, the first limiting plate 19 is slidingly connected with the first sliding groove 16, and is used for pushing the limiting block 13.

[0046] In the above technical solution, the push rod 15 is used to push the limiting block 13, so that the first sealing plate 10 and the second sealing plate 11 can be opened and closed, thereby improving the convenience of installation.

[0047] In another aspect of the present embodiment, as shown in the drawings, Figure 4 the outer wall of the middle part of the push rod 15 is fixedly connected with a second limiting plate 20, the second limiting plate 20 is slidingly connected with the second sliding groove 17, and the outer wall of the middle part of the push rod 15 is sleeved with a spring 18.

[0048] In the above technical solution, the spring 18 is provided for the reset of the push rod 15.

[0049] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description 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.

[0050] The preferred embodiments of the utility model disclosed above are only used for helping to set forth the utility model. The preferred embodiments do not describe all the details exhaustively, and also do not limit the utility model to only the specific implementation manners described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments, in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited only by the claims and the whole scope and equivalents thereof.

Claims

1. A docking device, characterized in that, The utility model relates to a cable joint device, which comprises a joint assembly, a sealing assembly and a protection assembly. The joint assembly comprises a first joint plate (4) installed at the joint of two wire conductors (1), the upper end of the first joint plate (4) is rotatably connected with a second joint plate (5) and fixedly connected through a bolt, the inner wall of the first joint plate (4) is fixedly connected with a first clamping plate (6), the upper end of the second joint plate (5) is threadedly connected with an adjusting bolt (8) on both sides, the lower end of the second joint plate (5) is provided with a second clamping plate (7), the inner wall of the first clamping plate (6) and the second clamping plate (7) is fixedly connected with an insulating layer (9), the lower end of the adjusting bolt (8) is rotatably connected in the inner part of the upper end of the second clamping plate (7), and the position of the second clamping plate (7) is adjusted. The sealing assembly comprises a first sealing plate (10) fixedly installed on the inner wall of both sides of the first joint plate (4), the upper end of the first sealing plate (10) is rotatably connected with a second sealing plate (11), the inner wall of the first sealing plate (10) and the second sealing plate (11) is fixedly connected with a rubber sealing gasket (12), and the inner wall of the rubber sealing gasket (12) is tightly attached to the outer wall of the insulating sleeve (3). The protection assembly is installed outside the joint assembly and is used for preventing water from entering the joint of the cable.

2. A docking device as claimed in claim 1, characterized in that The protection assembly comprises a first protection cover (21) installed on the outer wall of the joint assembly, the front end of the first protection cover (21) is provided with a second protection cover (22), the outer wall of the lower end of the first joint plate (4) is fixedly connected with a plurality of limiting rods (23), the inner wall of the lower end of the first protection cover (21) and the second protection cover (22) is fixedly connected with an arc-shaped clamping block (24), the limiting rod (23) is clamped and matched with the arc-shaped clamping block (24), and the first protection cover (21) and the second protection cover (22) are limited.

3. A docking device as claimed in claim 2, characterised in that The outer wall of the upper end of the first protection cover (21) is fixedly connected with a clamping groove (26), the outer wall of the upper end of the second protection cover (22) is fixedly connected with a clamping plate (25), the clamping plate (25) is clamped and matched with the clamping groove (26) and fixedly connected through a bolt.

4. A docking device as claimed in claim 1, characterized in that The inner part of the upper end of the first sealing plate (10) is slidably connected with a push rod (15), the upper end of the first sealing plate (10) is provided with a limiting groove (14) on both sides, the inner part of the first sealing plate (10) is provided with a first sliding groove (16) on both sides at the lower end of the limiting groove (14), the inner part of the first sealing plate (10) is provided with a second sliding groove (17) at the middle part at the lower end of the limiting groove (14), the lower end of the second sealing plate (11) is fixedly connected with a limiting block (13) on both sides, the limiting block (13) is clamped and matched with the limiting groove (14), and the second sealing plate (11) is limited.

5. A docking device as claimed in claim 4, characterised in that The lower end of the limiting block (13) is located in the inner part of the first sliding groove (16), the outer wall of both sides of the push rod (15) is fixedly connected with a first limiting plate (19), the first limiting plate (19) is slidably connected with the first sliding groove (16), and the limiting block (13) is pushed.

6. A docking device as claimed in claim 4, characterised in that The outer wall of the push rod (15) is fixedly connected with a second limiting plate (20) near the middle part, the second limiting plate (20) is slidably connected with the second sliding groove (17), and the outer wall of the middle part of the push rod (15) is sleeved with a spring (18) for resetting the push rod (15).

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