CN221177255U

CN221177255U - Cable intermediate joint

Info

Publication number: CN221177255U
Application number: CN202323084210.7U
Authority: CN
Inventors: 李源; 邱钰凯; 齐少康; 钱卫琛; 陈晓彤
Original assignee: North China University of Water Resources and Electric Power
Current assignee: North China University of Water Resources and Electric Power
Priority date: 2023-11-15
Filing date: 2023-11-15
Publication date: 2024-06-18
Anticipated expiration: 2033-11-15

Abstract

The utility model provides a cable intermediate joint, and belongs to the technical field of electricity. The cable intermediate connector includes a main body structure and a locking structure. The main structure comprises two protective shells and clamping parts, the opposite ends of the two protective shells are mutually attached, the clamping parts are arranged in the two protective shells, the locking structure comprises two locking parts and two reinforcing parts, the opposite ends of the two locking parts are fixedly connected with the opposite ends of the two protective shells respectively, the outer walls of the two reinforcing parts are fixedly connected with the inner walls of the two locking parts respectively, wherein the two cable joints can be fixed by the two locking parts through the two locking parts fixed at the opposite ends of the two protective shells, the two reinforcing parts arranged on the inner walls of the two locking parts can be used for increasing the locking of the two cable joints by the two reinforcing parts, the problem that cables with different diameters are not easy to be fixedly connected at the two ends of the existing cable intermediate joint is solved, and the applicability of the cable intermediate joint is improved.

Description

Cable intermediate joint

Technical Field

The application relates to the technical field of electricity, in particular to a cable intermediate joint.

Background

The cable is used for transmitting electric (magnetic) energy, information and wire products for electromagnetic energy conversion. It can be defined as: an aggregate consisting of; the conductor is externally extruded (wound) with an insulating layer, such as an overhead insulating cable, or a few cores are twisted (corresponding to the phase line, the zero line and the ground line of the power system), such as an overhead insulating cable with more than two cores, or a sheath layer, such as a plastic/rubber covered wire cable, is added. The main technological techniques include drawing, twisting, insulating extrusion (wrapping), cabling, armouring, protecting layer extrusion, etc. and the different procedures of various products are combined to a certain extent, and the cable is multi-rack in the air or underground or underwater for telecommunication or power transmission.

At present, with the development of economy, the cable conversion rate of the urban distribution network is higher and higher, two cables are fixedly connected by a connector between the cables, and the existing cable intermediate connectors, such as the cable intermediate connector with the existing bulletin number of CN110994533B (China, the authorized bulletin day is 2021-06-01), are required. Simple structure, convenient to use is swift, and the security is better, and its characterized in that includes fixed connection portion, lower fixed connection portion and negative pressure expansion's rubber sleeve, goes up fixed connection portion and lower fixed connection portion and passes through fastening screw connection, and forms the airtight cavity of holding cable tie point, and the rubber sleeve cover is arranged in the cable tie point, and both ends respectively with the inseparable parcel of cable tie point both sides, it is provided with the passageway of bleeding to go up fixed connection portion, produces negative pressure in the airtight cavity of bleeding and makes the rubber sleeve expand. However, the above scheme still has certain defects, and the inventor has found that. Because the types of the cables are different, the diameters of the cables are different, and therefore, the two ends of the cable intermediate joint are not easy to fixedly connect with cables with different diameters, and the applicability of the cable intermediate joint is further affected.

Disclosure of utility model

In order to overcome the defects, the application provides a cable intermediate joint to solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model for solving the technical problems is as follows:

a cable intermediate connector includes a body structure and a locking structure.

The main structure comprises two protective shells and clamping parts, the opposite ends of the two protective shells are mutually attached, the clamping parts are arranged inside the protective shells, the locking structure comprises two locking pieces and two reinforcing parts, the opposite ends of the locking pieces are fixedly connected with the opposite ends of the two protective shells respectively, and the outer walls of the reinforcing parts are fixedly connected with the inner walls of the locking pieces respectively.

Further, the locking piece includes sleeve, four arc, four split grooves, locking nut and external screw thread, sleeve one end with protective housing outer end fixed connection, the other end equidistant be equipped with four the arc, and four be equipped with respectively between the arc four the split groove, the outer wall has seted up the external screw thread, locking nut inner circle with the laminating of sleeve outer wall.

Further, the reinforcing part comprises four reinforcing sheets and a plurality of barbs, the outer walls of the four reinforcing sheets are respectively embedded and fixed at one end of the inner wall of the arc-shaped plate, and the inner wall of the arc-shaped plate is provided with a plurality of barbs at equal intervals.

Further, the clamping portion comprises an annular groove and an inserting ring, the annular groove and the inserting ring are respectively arranged at opposite ends of the two protective shells, and the outer wall of the inserting ring is inserted into the inner wall of the annular groove.

Further, the main body structure further comprises a fixing piece, and the inner wall of the fixing piece is fixedly connected with the outer wall of the joint of the two protective shells.

Further, the mounting includes two ring flanges, a plurality of connecting bolt and a plurality of coupling nut, two the ring flange inner wall respectively with two protective housing outer wall fixed connection, the opposite end is closely laminated, a plurality of the connecting bolt bottom respectively equidistant run through two ring flange lateral wall and a plurality of coupling nut inner wall bolted connection.

Further, the main body structure further comprises a plurality of heat shrinkage sleeves, and the heat shrinkage sleeves are arranged inside the two protective shells.

The beneficial effects are that: the application provides a cable intermediate joint, which is characterized in that two locking parts are fixed at the separated ends of two protective shells, the two cable joints can be fixed by the two locking parts, the two reinforcing parts are arranged on the inner walls of the two locking parts, the locking of the two locking parts to the two cable joints can be increased by the two reinforcing parts, the locking nuts arranged on the outer walls of the sleeves rotate towards the outer ends of four arc plates through external threads, so that the four split grooves are reduced, the four arc plates are mutually close to each other until being in locking connection with the outer walls of the cable joints, the purpose of fixing cables with different diameters is realized, the four reinforcing plates and a plurality of barbs arranged on the inner walls of the four arc plates are deeply connected with the outer walls of the cable, the friction force between the locking parts and the cable can be increased, and the cable is prevented from being separated, the problem that the two ends of the existing cable intermediate joint are not easy to be fixedly connected with cables with different diameters is effectively solved, and the applicability of the cable intermediate joint is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a cable intermediate joint according to an embodiment of the present application;

Fig. 2 is a schematic view of a cable intermediate joint separation structure according to an embodiment of the present application;

Fig. 3 is a schematic view of a connection structure of a protection shell and a part of a locking member and a reinforcement part according to an embodiment of the present application;

Fig. 4 is a schematic diagram of a connection structure between a heat shrinkable sleeve and a protective case and between the heat shrinkable sleeve and a locking structure according to an embodiment of the present application.

In the figure: 10-a main body structure; 110-a protective shell; 120-clamping part; 130-a fixing piece; 140-thermal shrinkage sleeve; a 20-lock structure; 210-a locking member; 220-reinforcing part; 211-sleeve; 212-arc plates; 213-split groove; 214-locking the nut; 215-external threads; 221-reinforcing sheets; 222-barb; 121-an annular groove; 122-insert ring; 131-a flange plate; 132—a connecting bolt; 133-a coupling nut.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments.

Referring to fig. 1, the present application provides a cable intermediate connector, which includes a main body structure 10 and a locking structure 20.

Wherein the main structure 10 is used for connecting two protective cases 110, and the locking structure 20 is used for fixing cables with different diameters.

Referring to fig. 1, 2, 3 and 4, the main structure 10 includes two protective cases 110, a clamping portion 120 provided at opposite ends of the two protective cases 110, a fixing member 130, and a plurality of heat shrink sleeves 140 disposed inside the protective cases 110, wherein the clamping portion 120 includes an annular groove 121 and an insert ring 122; the fixing member 130 includes two flanges 131, a plurality of coupling bolts 132, and a plurality of coupling nuts 133.

Wherein, the two protective cases 110 may be made of a metal material, and two cable heads are inserted from the separated ends of the two protective cases 110, respectively, when installed, so that the cable joints are protected by the protective cases 110.

The design of the clamping portion 120 increases connectivity between the two protective cases 110, and since the outer wall of the insert ring 122 is tightly combined with the inner wall of the annular groove 121, external rainwater can be prevented from penetrating from the joint of the two protective cases 110, and the possibility of damage to the cable in the long-term use process is reduced, the annular groove 121 and the insert ring 122 can have anti-skid designs, for example, artificial textures or protrusions can be arranged on the inner wall of the annular groove 121 and the outer wall of the insert ring 122 to increase friction force between the two to prevent the insert ring 122 from sliding in the annular groove 121; and the insert ring 122 can be made of elastic material, when the insert ring 122 is inserted into the annular groove 121, the connection between the insert ring 122 and the annular groove 121 is tighter due to the rebound of the elastic material.

Wherein, the design of mounting 130 can be in the same place two protective housing 110 are fixed, through the mutual laminating of two ring flanges 131, is utilizing a plurality of connecting bolts 132 and a plurality of coupling nut 133 bolted connection, can be in the same place two ring flanges 131 are fixed, realize the purpose of fixed two protective housing 110, and can also be equipped with the packing ring between two ring flanges 131 for increase buffering and the sealed effect between two ring flanges 131 and two protective housing 110.

The heat shrinkage sleeve 140 can provide dual protection, firstly, the heat shrinkage sleeve 140 can prevent the cable from being directly damaged by the physical environment, secondly, the heat shrinkage sleeve 140 can be tightly attached to the cable when being heated, a compact protection layer is formed, the cable is prevented from being damaged by corrosion or oxidation, and the insulation effect is achieved.

Referring to fig. 1, 2, 3 and 4, the locking structure 20 includes two locking members 210 disposed at the opposite ends of the two protective cases 110, and two reinforcing portions 220 embedded in the two locking members 210, where the locking members 210 include a sleeve 211, four arcuate plates 212, four slots 213, locking nuts 214 and external threads 215; the reinforcing portion 220 includes four reinforcing sheets 221 and a plurality of barbs 222.

The design of the locking member 210 can lock cables with different diameters, the sleeve 211 of the locking member is designed to enable the locking member 210 to be connected with the protective housing 110 more stably, the combination of the arc plates 212 and the split grooves 213 enables the locking member 210 to adapt to the shape and the size of the cable better, one round end formed between the four arc plates 212 is fixedly connected with one end of the sleeve 211 and smaller than the round end of the other end, the cable passes through the sleeve 211 from the end of the cable to enter the protective housing 110 and is sleeved by the heat shrinkage sleeve 140, the locking nut 214 is connected with the external threads 215 through threads, the locking nut 214 is connected with the external ends of the four arc plates 212 from the sleeve 211, the four split grooves 213 can be reduced, and the four arc plates 212 are mutually close to each other for locking connection of the cable.

The reinforcing piece 221 is embedded in one end of the inner wall of the arc plate 212, and can move along with the bending of the arc plate 212, so that the attaching area of the arc plate 212 and the cable is increased, the locking capability of the locking piece 210 is improved, the barbs 222 are equidistantly arranged on the inner wall of the arc plate 212, and when the cable is placed in the protective shell 110, the barbs 222 penetrate into the cable shell to form a fixing point, so that the firmness of fixing the cable is improved.

The working principle of the cable intermediate joint is as follows: during the use, the staff inserts two cable connectors from two locking parts 210 respectively and leaves the end and insert two protective housing 110 insidely to cup jointed by pyrocondensation cover 140, when two cable connectors connect the butt joint and repair the time, the staff removes pyrocondensation cover 140 to the tie point, can hug closely at the cable when heating, peg graft through annular groove 121 and inserted ring 122, make two protective housing 110 laminating each other, rethread rotates two lock nuts 214 and external screw 215 threaded connection, make four arc 212 be close to each other, and four reinforcement piece 221 closely laminate with the cable outer wall, simultaneously, barb 222 pierces the cable housing, rethread connecting bolt 132 and connecting nut 133 bolted connection are two ring flanges 131 fixed connection, realize the purpose of fixed cable intermediate head.

It should be noted that, specific model specifications of the arc plate 212 and the locking nut 214 need to be determined by selecting a model according to an actual specification of the device, and a specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.

It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A cable intermediate connector, comprising:

The main body structure (10), the main body structure (10) comprises two protective shells (110) and a clamping part (120), opposite ends of the two protective shells (110) are mutually attached, and the clamping part (120) is arranged inside the main body structure;

The locking structure (20), the locking structure (20) includes two locking piece (210) and two reinforcement portion (220), two locking piece (210) opposite end respectively with two protective housing (110) looks end fixed connection, two reinforcement portion (220) outer wall respectively with two locking piece (210) inner wall fixed connection.

2. The cable intermediate joint according to claim 1, wherein the locking member (210) comprises a sleeve (211), four arc plates (212), four split grooves (213), a locking nut (214) and external threads (215), one end of the sleeve (211) is fixedly connected with the outer end of the protective shell (110), four arc plates (212) are arranged at equal intervals on the other end, four split grooves (213) are respectively arranged between the four arc plates (212), the external threads (215) are formed in the outer wall, and the inner ring of the locking nut (214) is attached to the outer wall of the sleeve (211).

3. The cable intermediate joint according to claim 2, wherein the reinforcing portion (220) comprises four reinforcing sheets (221) and a plurality of barbs (222), the outer walls of the four reinforcing sheets (221) are respectively embedded and fixed at one end of the inner walls of the four arc-shaped plates (212), and the inner walls of the four arc-shaped plates (212) are provided with a plurality of barbs (222) at equal intervals.

4. A cable intermediate connector according to claim 3, wherein the clamping portion (120) comprises an annular groove (121) and an insert ring (122), the opposite ends of the two protective shells (110) are respectively provided with the annular groove (121) and the insert ring (122), and the outer wall of the insert ring (122) is inserted into the inner wall of the annular groove (121).

5. The cable intermediate head according to claim 4, wherein the main body structure (10) further comprises a fixing member (130), and an inner wall of the fixing member (130) is fixedly connected with an outer wall of a joint of the two protective shells (110).

6. The cable intermediate joint according to claim 5, wherein the fixing member (130) comprises two flanges (131), a plurality of connecting bolts (132) and a plurality of connecting nuts (133), the inner walls of the two flanges (131) are fixedly connected with the outer walls of the two protecting shells (110) respectively, opposite ends are tightly attached, and bottom ends of the connecting bolts (132) are connected with the inner walls of the connecting nuts (133) through the side walls of the two flanges (131) at equal intervals respectively.

7. The cable intermediate joint according to claim 6, wherein the main body structure (10) further comprises a plurality of heat shrink sleeves (140), wherein a plurality of heat shrink sleeves (140) are arranged inside the two protective shells (110).