CN115241685A

CN115241685A - High-altitude cable connecting terminal

Info

Publication number: CN115241685A
Application number: CN202210986581.5A
Authority: CN
Inventors: 焦彬
Original assignee: State Grid Shandong Electric Power Co Linshu County Power Supply Co
Current assignee: State Grid Shandong Electric Power Co Linshu County Power Supply Co
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-10-25
Anticipated expiration: 2042-08-17
Also published as: CN115241685B

Abstract

The application belongs to the technical field of high-altitude cable connection, and particularly relates to a high-altitude cable connecting terminal which comprises a tubular shell, wherein at least two fixing seats are arranged outside the tubular shell, each fixing seat comprises an outer wall provided with an external thread, an internal thread hole communicated with the inside of the tubular shell is formed in the middle of each fixing seat, and a convex part and a groove are uniformly arranged on the outer surface above the space between the outer wall and the internal thread hole around the center of the internal thread hole; the external thread of the outer wall is connected with a screw cap; a cable pressing device is arranged in the tubular shell; the cable pressing device comprises a screw rod in threaded connection with the internal threaded hole, and the bottoms of the screw rods are hinged with the arc-shaped pressing sheets; the fixed lug that is equipped with in screw rod top, the lug overslide cover is equipped with the locating part, the locating part body middle part of locating part be equipped with lug complex locating part hole, the locating part external symmetry be equipped with groove complex fillet, prevent through with the fillet embedding recess in that the screw rod rocks because of the cable and becomes flexible.

Description

High-altitude cable connecting terminal

Technical Field

The application relates to the technical field of high-altitude cable connection, in particular to a high-altitude cable connection terminal.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The power cable is used for transmitting and distributing electric energy, the connection of the cable is required to be firm and reliable, the sectional area of the connection is ensured under the condition of ensuring certain connection strength so as to ensure the passable current, otherwise, the connection part of the cable is easy to generate heat and carbonize; for the cable connection at a high altitude, the cable swings due to long-term wind power bearing, not only higher connection reliability is required, but also when the cable connection is carried out, on-site high-altitude operation personnel can conveniently and efficiently complete the cable connection work, the application number is 201911304764.9, and the Chinese invention patent named as a device for conveniently connecting and having communication prompt for high-altitude power cables discloses a device for conveniently connecting and having communication prompt for high-altitude power cables, which comprises a left mounting rack and a right mounting rack, wherein the front part of the left mounting rack is provided with a left rope pipe, the front part of the right mounting rack is provided with a right rope pipe, the front end of the left mounting rack is provided with a sensor, the right end of the right mounting rack is connected with a guide head, the right upper right part inside of the left mounting rack is provided with a metal connecting sheet, the front side of the upper part of the left mounting rack is connected with a lower sliding block in a sliding manner, the upper end of a second spring is connected with an upper moving block, and the upper end of the upper moving block is provided with two metal balls. Penetrate left rope pipe on the left mounting bracket and right rope pipe on the right mounting bracket respectively through the rope, during the operation, only need the pulling rope to make left mounting bracket and right mounting bracket joint through left rope pipe and right rope pipe and direction head and recess to guarantee power cable's fixed connection, this structure has solved current power cable and has connected the problem that the operation is complicated and operate dangerously. However, the following technical problems still exist for overhead cable connection: 1. the left rope pipe and the right rope pipe are required to be parallel, and the left rope pipe and the right rope pipe are installed when the lower ends of the left rope pipe and the right rope pipe face downwards, so that the left rope pipe and the right rope pipe can be guided through the ropes; due to the particularity of the aerial work, the aerial work per se can cause the platform where the working personnel are located to be not horizontal or unstable, and the aerial work personnel can have the condition of inconvenient operation when ensuring that the left rope pipe and the right rope pipe are parallel; 2. the metal connecting sheet is connected with the wire, larger current cannot pass through the area of the metal connecting sheet, the connection reliability between the metal connecting sheet and the wire depends on the connection reliability between the left mounting rack and the right mounting rack, including the mounting and matching precision between the left mounting rack and the right mounting rack, and certain difficulty exists in aerial cable connection operation; 3. the clamping plate is fastened through the fastening nut, and the phenomenon that the fastening nut is loosened when the cable swings in windy weather is difficult to avoid.

Based on the above situation, it is necessary to provide a high-altitude cable connection device which is convenient to install at high altitude, simple to use, capable of ensuring the cable connection sectional area, firm in cable connection and high in reliability.

Disclosure of Invention

Based on this, to the technical problem that the utility model provides an overhead cable connecting terminal.

The technical scheme that this application solved the problem that prior art exists adopted is:

the application provides a high-altitude cable connecting terminal, which comprises a tubular shell, wherein at least two fixing seats are arranged outside the tubular shell, each fixing seat comprises an outer wall provided with an external thread, an internal thread hole communicated with the inside of the tubular shell is formed in the middle of each fixing seat, and a convex part and a groove are uniformly arranged on the outer surface above the space between the outer wall and the internal thread hole around the center of the internal thread hole; the external thread of the outer wall is connected with a screw cap;

a cable pressing device is arranged in the tubular shell; the cable pressing device comprises a screw rod in threaded connection with the internal threaded hole, and the bottoms of the screw rods are hinged with the arc-shaped pressing sheets; the fixed lug that is equipped with in screw rod top, the lug overslide cover is equipped with the locating part, the locating part body middle part of locating part be equipped with lug complex locating part hole, the locating part external symmetry be equipped with groove complex fillet, prevent through with the fillet embedding recess in that the screw rod rocks because of the cable and becomes flexible.

Preferably, an articulated piece matched with the screw rod is fixedly arranged outside the arc-shaped pressing piece, an articulated piece inner ring and an articulated piece outer ring are sequentially arranged in the middle of the articulated piece from top to bottom, a connecting rod and an articulated piece are sequentially and fixedly arranged at the bottom of the screw rod, and the connecting rod and the articulated piece are respectively and rotatably arranged in the articulated piece inner ring and the articulated piece outer ring.

Preferably, the bottom of the internal thread hole is provided with a columnar space matched with the hinge piece, and the hinge piece can slide up and down in the columnar space.

Preferably, a square hole is formed in the middle of the top of the convex block, a connecting piece is arranged between the convex block and the rotary cover, an insert which is connected with the square hole in a sliding mode is arranged at the bottom of the connecting piece, and the square hole is formed in the middle of the top of the connecting piece.

Preferably, an elastic pad is arranged above the inner part of the spiral cover.

Preferably, the number of the fixed seats is 2, and the arc-shaped pressing piece is made of copper.

Preferably, the number of the connecting pieces is 0 to 3.

Preferably, a fixing glue is coated between the rotary cover and the outer wall.

Preferably, the tubular shell and the screw cap are both made of insulating materials.

Preferably, the height of the bump is smaller than that of the inner hole of the limiting part.

Compared with the prior art, the beneficial effect of this application is:

1. the limiting part 10 is additionally arranged above the screw rod 222 playing a role in compressing a cable, and then the insertion strip 102 of the limiting part 10 is embedded into the groove 6 in the fixing seat of the tubular shell 1, so that the problem of looseness of cable connection caused by the swing of a high-altitude cable is solved, when the cable swings, the screw rod 222 cannot rotate due to the limiting effect of the limiting part 10, and the reliability of the cable connection is ensured.

2. When the cables are connected, the connecting sectional area of the cable joints cannot be effectively ensured, the arc-shaped pressing sheet 20 made of copper materials is used as a connecting bridge of the two cable joints, the sectional area of the arc-shaped pressing sheet 20 is the connecting sectional area of the cables at the cable joints, and certain cable carrying capacity is ensured.

3. Convenient to use, the practicality is strong.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Figure 1 is an exploded view of the external overall structure of the aerial cable connection terminal of the present application,

figure 2 is a cross-sectional view of the tubular housing of figure 1,

figure 3 is an enlarged view of area a of figure 2,

figure 4 is a schematic structural view of the high-altitude cable connecting terminal cable pressing device of the application,

figure 5 is a cross-sectional view of the cable gland of figure 4,

FIG. 6 is a schematic view of a partial cross-sectional structure of the arc-shaped pressing plate shown in FIG. 4,

FIG. 7 is a schematic view of the structure of the overhead cable connecting terminal crimping piece and the stopper of the present application,

figure 8 is a first schematic view of the aerial cable connection terminal installation of the present application,

fig. 9 is a second schematic view of the installation of the aerial cable connection terminal of the present application.

In the figure:

1. a pipe-mounted shell, 2, a cable pressing device, 3, a columnar space, 4, an internal threaded hole, 5, a convex piece, 6, a groove, 7, an outer wall, 8, a connecting piece, 9, a rotary cover, 10 and a limiting piece,

100. a position-limiting member body 101, a position-limiting member inner hole 102 and a filler rod,

20. the connecting rod comprises an arc pressing sheet 21, a hinge piece 22, a pressing piece 23, a hinge piece outer ring 24, a hinge piece inner ring 220, a hinge piece 221, a connecting rod 222, a screw rod 223, a bump 224 and a square hole.

The specific implementation mode is as follows:

the present application will be further described with reference to the following drawings and examples.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

Referring to fig. 1, a schematic diagram of an external connection structure of an overhead cable connection terminal of the present application is shown, the overhead cable connection terminal of the present application includes a tubular housing 1, at least two fixing seats are arranged outside the tubular housing 1, in this embodiment, two fixing seats are provided, referring to fig. 2 and fig. 3, the fixing seats include an outer wall 7 provided with external threads, an internal thread hole 4 communicated with the inside of the tubular housing 1 is arranged in the middle of the fixing seat, and a convex part 5 and a groove 6 are uniformly arranged on the outer surface above the space between the outer wall 7 and the internal thread hole 4 around the center of the internal thread hole 4; the outer wall 7 is externally threaded with a screw cap 9; the tubular shell 1 and the spiral cover 9 are made of insulating materials.

A cable pressing device 2 is arranged in the tubular shell 1; referring to fig. 4 to 7, the cable pressing device 2 comprises a pressing piece 22, wherein the pressing piece 22 comprises a screw 222 in threaded connection with the internally threaded hole 4, and the bottoms of the screw 222 are hinged with the arc-shaped pressing pieces 20; a projection 223 is fixedly arranged on the top of the screw 222. The height of the bump 223 is smaller than that of the inner hole 101 of the limiting member, the bump 223 is sleeved with the limiting member 10 in a sliding manner, the inner hole 101 of the limiting member, which is matched with the bump 223, is arranged in the middle of the limiting member body 100 of the limiting member 10, the insertion strips 102, which are matched with the grooves 6, are symmetrically arranged outside the limiting member 10, and the insertion strips 102 are embedded into the grooves 6 to prevent the screw 222 from loosening due to cable shaking; the arc-shaped pressing piece 20 is made of copper; the outer part of the arc-shaped pressing sheet 20 is fixedly provided with a hinge piece 21 matched with the screw rod 222, the middle of the hinge piece 21 is sequentially provided with a hinge piece inner ring 24 and a hinge piece outer ring 23 from top to bottom, the bottom of the screw rod 222 is sequentially and fixedly provided with a connecting rod 221 and a hinge block 220, and the connecting rod 221 and the hinge block 220 are respectively and rotatably arranged in the hinge piece inner ring 24 and the hinge piece outer ring 23; referring to fig. 3, a cylindrical space 3 matched with the hinge member 21 is provided at the bottom of the internal threaded hole 4, and the hinge member 21 can slide up and down in the cylindrical space 3.

Referring to fig. 1 and 7, a square hole 224 is formed in the middle of the top of the protruding block 223, a connecting piece 8 is arranged between the protruding block 223 and the screw cap 9, an insertion piece slidably connected with the square hole 224 is arranged at the bottom of the connecting piece 8, the rest of the structure of the connecting piece 8 is the same as that of the protruding block 223, if a cable to be connected is thin, so that the cable pressing device 2 is pressed downwards for a long distance, a large gap can be generated between the protruding block 223 and the screw cap 9, after the insertion strip 102 of the limiting piece 10 is inserted into the groove 6, the limiting piece inner hole 101 in the middle of the limiting piece 10 cannot be sleeved on the protruding block 223, and at the moment, by additionally installing the connecting piece 8 at the top of the protruding block 223, the insertion piece at the bottom of the connecting piece 8 is inserted into the square hole 224 of the protruding block 223, and then the limiting piece inner hole 101 of the limiting piece 10 is sleeved on the connecting piece 8, which can also play the same role; according to the actual situation, the number of the connecting pieces can be 0-3, and an elastic cushion is arranged above the inner part of the spiral cover 9; and fixing glue is coated between the screw cap 9 and the outer wall 7.

The application method of the high-altitude cable connecting terminal comprises the following steps:

the first step is as follows: referring to fig. 8, the cable pressing device 2 is placed into the tubular housing 1 such that the pressing member 22 of the cable pressing device 2 is aligned with the fixing seat of the tubular housing 1; in actual use, the direction of the fixing seat can be downward, so that the crimping piece 22 can be conveniently aligned with the fixing seat;

the second step is that: two cable joints to be connected are respectively inserted between the arc-shaped pressing sheets 20 of the cable pressing device 2 and the tubular shell 1 from two sides of the tubular shell 1; in the process, the arc-shaped pressing piece 20 is jacked up, and the fixed seat is jacked into the columnar space 3 in fig. 3; fig. 9 shows the state of fig. 8 after the cable hold-down device 2 has been jacked up;

the third step: the proper socket wrench matched with the lug 223 is selected to respectively tighten the lugs 223 in the two fixed seats, the screw 222 is continuously pressed towards the inside of the tubular shell 1 through the thread transmission between the screw 222 and the internal thread hole 4, the hinging blocks 220 connected with the bottom of the screw 222 through the connecting rod 221 are respectively and rotatably arranged in the hinging piece inner ring 24 and the hinging piece outer ring 23, so that the arc-shaped pressing piece 20 provided with the hinging piece inner ring 24 and the hinging piece outer ring 23 is continuously pressed against the cable between the arc-shaped pressing piece and the tubular shell 1 in the process that the screw 222 is continuously pressed towards the inside of the tubular shell 1; and finally the cable is compressed.

The fourth step: sleeving the limiting piece 10 on the projection 223, and embedding the insertion strip 102 of the limiting piece 10 into the groove 6; if the depth of the cable pressing device 2 pressed into the tubular housing 1 is too large, only a proper number of connectors 8 are required to be sleeved on the projection 223, and then the top connector 8 is sleeved on the upper limiting member 10, and the insertion strip 102 of the limiting member 10 is inserted into the groove 6;

the fifth step: and screwing the screw cap 9 to complete the cable connection. The spiral cover 9 is internally provided with an elastic cushion for buffering.

The high-altitude cable connecting terminal has the advantages that the limiting part 10 is additionally arranged above the screw rod 222 playing a role in compressing a cable, the insertion strip 102 of the limiting part 10 is embedded into the groove 6 in the fixing seat of the tubular shell 1, the problem of looseness of cable connection caused by swinging of the high-altitude cable is solved, when the cable swings, the screw rod 222 cannot rotate due to the limiting effect of the limiting part 10, the connection reliability of the cable is guaranteed, and the problem that fastening screws are loosened due to swinging of the cable in the traditional high-altitude cable connection is solved.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Although the embodiments of the present application have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present application, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive effort by those skilled in the art.

Claims

1. High altitude cable junction terminal, its characterized in that:

the fixing device comprises a tubular shell (1), wherein at least two fixing seats are arranged outside the tubular shell (1), each fixing seat comprises an outer wall (7) provided with an external thread, an internal thread hole (4) communicated with the inside of the tubular shell (1) is formed in the middle of each fixing seat, and a convex part (5) and a groove (6) are uniformly arranged on the outer surface above the position between each outer wall (7) and the corresponding internal thread hole (4) around the center of the corresponding internal thread hole (4); the outer wall (7) is externally threaded with a screw cap (9);

a cable pressing device (2) is arranged in the tubular shell (1); the cable pressing device (2) comprises a screw rod (222) in threaded connection with the internal threaded hole (4), and the bottoms of the screw rods (222) are hinged to the arc-shaped pressing sheet (20); the fixed lug (223) that is equipped with in screw rod (222) top, lug (223) external slip cover is equipped with locating part (10), the locating part body (100) middle part of locating part (10) be equipped with lug (223) complex locating part hole (101), locating part (10) external symmetry be equipped with recess (6) complex fillet (102), prevent screw rod (222) to rock because of the cable and become flexible through embedding fillet (102) in recess (6).

2. The overhead cable connection terminal of claim 1, wherein:

arc preforming (20) external fixation is equipped with articulated elements (21) supporting with screw rod (222), be equipped with articulated elements inner circle (24) and articulated elements outer lane (23) by last under to in proper order in the middle of articulated elements (21), screw rod (222) bottom is fixed in proper order and is equipped with connecting rod (221), articulated piece (220), connecting rod (221) and articulated piece (220) rotate respectively and locate in articulated elements inner circle (24) and articulated elements outer lane (23).

3. The overhead cable connection terminal of claim 1, wherein:

the bottom of the internal thread hole (4) is provided with a columnar space (3) matched with the articulated piece (21), and the articulated piece (21) can slide up and down in the columnar space (3).

4. The overhead cable connection terminal of claim 1, wherein:

be equipped with square hole (224) in the middle of lug (223) top, be equipped with connecting piece (8) between lug (223) and spiral cover (9), connecting piece (8) bottom be equipped with square hole (224) sliding connection's plug-in components, be equipped with square hole (224) in the middle of connecting piece (8) top.

5. The overhead cable connection terminal of claim 1, wherein:

an elastic pad is arranged above the inner part of the spiral cover (9).

6. The overhead cable connecting terminal according to claim 1, wherein:

the number of the fixed seats is 2, and the arc-shaped pressing sheets (20) are made of copper.

7. The overhead cable connection terminal of claim 4, wherein:

the number of the connecting pieces (8) is 0-3.

8. The overhead cable connection terminal of claim 1, wherein:

and a fixing glue is coated between the rotary cover (9) and the outer wall (7).

9. The overhead cable connecting terminal according to claim 1, wherein:

the tubular shell (1) and the spiral cover (9) are made of insulating materials.

10. The overhead cable connection terminal of claim 1, wherein:

the height of the lug (223) is smaller than that of the inner hole (101) of the limiting part.