CN206353609U - A kind of new power transmission and distribution splicing fitting - Google Patents

Abstract

The utility model discloses a novel connection fitting for power transmission and distribution, which mainly relates to the field of electric power construction equipment. It includes a tensile fixing device, a connecting pipe and an insulating jacket, and two of the tensile fixing devices are symmetrically arranged. The tensile fixing device includes a tensile fixing sleeve, a connecting seat and a tensile clamping tube. The tensile fixing The sleeve includes a tapered sleeve and a flange protrusion, and a compression nut is provided on the outer peripheral surface of the tensile clamping tube, and an arc-shaped threaded protrusion is provided on the end of the tensile clamping tube away from the connecting seat, so that The inner surface of the arc-shaped thread protrusion is provided with teeth, the connecting pipe is arranged between two tensile fixing devices, and the insulating jacket is threadedly connected with the connecting seat. The beneficial effect of the utility model is that: the utility model can greatly reduce the tensile force borne by the connecting end of the electric cable, make the connection of the connecting end more firm, avoid frequent occurrence of power communication problems in the wild mountainous environment with strong wind, and ensure power communication. Safe and smooth.

Description

A new connector fitting for power transmission and distribution

technical field

The utility model relates to the field of electric power construction equipment, in particular to a new connecting fitting for power transmission and distribution.

Background technique

Power connection fittings are used to connect wires, ground wires, pull wires, etc., and should meet the mechanical and electrical properties. For the power communication cables used as wires, most of them are overhead power lines. When connecting adjacent power communication cables, not only the connection of electrical performance must be considered, but also the connection between adjacent power communication cables should be considered in combination with actual environmental problems. The joints between the cables are mechanically reinforced. For the windy environment in the wild mountainous areas, the joints between adjacent power communication cables will bear the weight of the power communication cables, and the power communication cables will be shaken by the wind. Due to the double tension effect, when ordinary electric power connection fittings are used for connection, the joint end will easily cause the joint to crack and fall apart under the action of double tension, which will lead to frequent power communication problems in this area, so there is an urgent need for a tension-resistant The new type of connection fittings for power transmission and distribution makes the connection end of the power communication cable more firm, avoids the frequent occurrence of power communication problems in the wild and mountainous environment with strong winds, and ensures the safety and smoothness of power communication in this environment.

Utility model content

The purpose of this utility model is to provide a new type of connecting fitting for power transmission and distribution, which can greatly reduce the tension on the connecting end of the electric cable, make the connecting end of the power communication cable more firm, and avoid the strong wind in the wild mountainous area. In this environment, power communication problems occur frequently, so it is necessary to ensure the safety and smoothness of power communication in this environment.

The utility model realizes above-mentioned purpose by following technical scheme:

A new type of connection fitting for power transmission and distribution, including a tension fixing device, a connecting pipe and an insulating jacket, two of the tension fixing devices are symmetrically arranged, and the tension fixing device includes a tension fixing sleeve, a connecting seat and an anti-tension fixing device. The tensile clamping tube, the tensile fixing sleeve includes a tapered sleeve and a flange protrusion, the flange protrusion is fixedly connected to one side of the connection seat, and the end of the connection seat away from the flange protrusion is connected to the tension clamp One end of the tight tube is detachably connected, and the outer circumferential surface of the tensile clamping tube is provided with external threads, and the outer circumferential surface of the tensile clamping tube is threaded with a compression nut, and the tensile clamping tube is far away from One end of the connection seat is provided with an arc-shaped thread protrusion, and the inner surface of the arc-shaped thread protrusion is provided with teeth, and the direction of the cusp of the tooth faces away from the side of the connection seat, adjacent to the arc-shaped thread protrusion There is a contraction groove between the two, the connecting pipe is arranged between the two tensile fixing devices, and the insulating jacket is screwed to the outer peripheral surface of the connecting seat.

A threaded groove is provided on the end of the connecting seat away from the flange protrusion, and the tensile clamping pipe is threadedly connected with the connecting seat through the threaded groove.

The included angle between the teeth and the axial direction of the tensile clamping pipe is 20°-60°.

The inner diameter of the tapered sleeve is smaller than the outer diameter of the power communication cable.

The tensile fixing sleeve is provided with an opening, the flange protrusion is provided with a first protrusion and a second protrusion, and the first protrusion and the second protrusion are arranged on both sides of the opening. The first protrusion and the second protrusion are fixedly connected by bolts.

The first bolt holes are arranged in an annular array on the flange protrusion, and a flange flange is arranged on one side of the connecting seat, and a second bolt hole matched with the first bolt hole is arranged on the flange flange , the first bolt hole matches the second bolt hole and is provided with a fixing bolt.

There are 2 to 6 compression nuts.

The outer diameter of the end surface of the connecting pipe is larger than the outer diameter of the tensile clamping pipe.

Compared with the prior art, the beneficial effects of the utility model are:

1. This device includes two symmetrical tensile fixing devices, connecting pipes and insulating jackets. The two tensile fixing devices are respectively used to fix the connecting ends of two power communication cables. The tensile fixing devices include tensile fixing sleeves, Connecting seat and tension clamping tube, the inner diameter of the tapered sleeve on the tension fixing sleeve is smaller than the outer diameter of the power communication cable, put the tension fixing sleeve on the power communication cable, and use hydraulic pliers or vices to resist tension and fix The sleeve exerts pressure, and the pressure will finally be applied to the power communication cable that is socketed with the tensile fixing sleeve, so that the outer rubber of the power communication cable is deformed and compressed, ensuring that the flange protrusion on the tensile fixing sleeve is fixedly connected with the connection seat , and then screw the compression nut on the outer circumferential surface of the tensile clamping tube to the arc-shaped thread protrusion to ensure that the teeth on the inner surface of the arc-shaped thread protrusion are in contact with the outer rubber of the power communication cable, and then Remove the end rubber of the power communication cable to expose the inner metal wires of the power communication cable, connect the exposed inner metal wires of the two end faces of the power communication cable, and then use hydraulic pliers or vise to press the connecting tube tightly on the At the joint of the inner metal wires of the two power communication cables, the insulating jacket is threadedly connected to the outer peripheral surface of the connecting seat to protect the inner structure of the device. When the power communication cable’s self-weight and power communication cable are shaken by the wind force to bring tension to the joint end, most of the tension will first act on the tensile fixing sleeve. When the tensile fixing sleeve is damaged and cannot bear the tensile force, Most of the tensile force will act on the teeth on the inner surface of the arc-shaped thread protrusion. Under the action of this double tensile force, the tensile force on the connecting end is very small, which can greatly reduce the stress on the connecting end of the power communication cable. The tensile force withstood makes the connection end of the power communication cable more solid, avoids the frequent occurrence of power communication problems in the wild mountainous environment with strong winds, and ensures the safety and smoothness of power communication in this environment.

2. By setting the threaded groove on the end of the connecting seat away from the flange protrusion, the tensile clamping pipe is threadedly connected with the connecting seat through the threaded groove, which ensures the detachable connection between the tensile clamping pipe and the connecting seat, and is more convenient to install .

3. By setting the included angle between the teeth and the axial direction of the tensile clamping tube to be 20-60 degrees, it is convenient for the teeth to bear and resist the pulling force. Most of the pulling force acts on the teeth, so that the connecting end The received pulling force is very small, which can greatly reduce the pulling force on the connecting end of the power communication cable, and make the connecting end of the power communication cable stronger.

4. By setting the inner diameter of the tapered sleeve smaller than the outer diameter of the power communication cable, put the tapered sleeve on the power communication cable, and apply pressure to the tapered sleeve with hydraulic pliers or vices, and the pressure will eventually be applied When the power communication cable is connected to the tapered sleeve, the outer rubber of the power communication cable will be deformed and compressed. When it works, most of the pulling force first acts on the tensile fixing sleeve, so that the pulling force on the connecting end is very small, which can greatly reduce the pulling force on the connecting end of the power communication cable, and make the connecting end of the power communication cable more stable. firm.

5. By setting the opening on the tensile fixing sleeve, the setting of the opening is to facilitate the taper sleeve to be placed on the power communication cable through the opening, and the first protrusion and the second protrusion are set on the flange protrusion. The first protrusion and the second protrusion are fixedly connected by bolts, and such a design can make the compression force of the joint between the tensile fixing sleeve and the power communication cable stronger and more continuous.

6. By setting the first bolt holes in a circular array on the flange protrusion, a flange flange is set on one side of the connecting seat, and a second bolt hole matching the first bolt hole is set on the flange flange. The bolt hole is matched with the second bolt hole and a fixing bolt is arranged at the place. Such a design can make the connection between the tension fixing sleeve and the connecting seat more firm, and prevent the tension fixing sleeve from falling off from the connecting seat and lose the effect of tensile force.

7. By setting the number of compression nuts to 2 to 6, the number of compression nuts to be used can be determined according to the length of the power communication cable, the size of its own weight, and the magnitude of the wind, so as to ensure that the compression nuts can compress the arc Thread raised.

8. By setting the outer diameter of the end face of the connecting pipe larger than the outer diameter of the tensile clamping pipe, when the connecting end of the power communication cable is subject to tension and tends to separate, the end face of the tensile clamping pipe can withstand the connecting pipe and resist The interaction between the tension clamping pipe and the connecting pipe can play a certain role in anti-tension force.

Description of drawings

Accompanying drawing 1 is the specific structural representation of the utility model.

Accompanying drawing 2 is the schematic diagram of the structure of the tensile fixing device in the utility model.

Accompanying drawing 3 is the structure schematic diagram of tensile clamping pipe in the utility model.

Accompanying drawing 4 is the schematic diagram of the structure of the tensile fixing sleeve in the utility model.

Labels shown in the accompanying drawings:

1. Connecting tube; 2. Insulating jacket; 3. Tensile fixing sleeve; 4. Connecting seat; 5. Tensile clamping tube; 6. Tapered sleeve; 7. Flange protrusion; 9. Arc-shaped thread protrusion; 10. Teeth; 11. Shrink groove; 12. Thread groove; 13. Opening; 14. First protrusion; 15. Second protrusion; 16. First bolt hole; 17. Flange flange; 18, second bolt hole; 19, fixing bolt; 20, outer rubber; 21, inner metal wire.

detailed description

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that those skilled in the art may make various changes or modifications to the utility model after reading the content taught by the utility model, and these equivalent forms also fall within the scope defined in the application.

The utility model is a new type of connecting fitting for power transmission and distribution. The main structure includes a tensile fixing device, a connecting pipe 1 and an insulating jacket 2. The tensile fixing device is symmetrically arranged with two, two tensile fixing devices They are respectively used to fix the connection ends of two power communication cables. The tension fixing device includes a tension fixing sleeve 3, a connecting seat 4 and a tension clamping pipe 5, and the tension fixing sleeve 3 includes a tapered sleeve 6 and a flange protrusion 7, and the flange protrusion 7. It is fixedly connected to one side of the connection seat 4. The inner diameter of the tapered sleeve 6 on the tensile fixing sleeve 3 is smaller than the outer diameter of the power communication cable. Put the tensile fixing sleeve 3 on the power communication cable, and use hydraulic pliers or The vise exerts pressure on the tensile fixing sleeve 3, and the pressure will finally be applied to the power communication cable socketed with the tensile fixing sleeve 3, so that the outer rubber 20 of the power communication cable is deformed and compressed. When the self-weight of the power communication cable is shaken by the wind force to bring tension to the connecting end, most of the pulling force first acts on the tensile fixing sleeve 3, so that the pulling force on the connecting end is very small, which can greatly reduce power communication. The tensile force borne by the connecting end of the cable makes the connecting end of the power communication cable stronger. The end of the connecting seat 4 away from the flange protrusion 7 is detachably connected to the end of the tensile clamping tube 5, and the detachable connection between the tensile clamping tube 5 and the connecting seat 4 is more convenient for installation. The outer circumferential surface of the tensile clamping tube 5 is provided with external threads, the outer circumferential surface of the tensile clamping tube 5 is threaded with a compression nut 8, and the tensile clamping tube 5 is far away from the connection seat 4 One end is provided with an arc-shaped thread protrusion 9, and the inner surface of the arc-shaped thread protrusion 9 is provided with teeth 10, and the direction of the cusp of the tooth 10 faces the side away from the connecting seat 4, adjacent to the arc-shaped A contraction groove 11 is provided between the threaded protrusions 9, and the compression nut 8 on the outer circumferential surface of the tensile clamping tube 5 is screwed to the arc-shaped threaded protrusions 9 to ensure that the teeth on the inner surface of the arc-shaped threaded protrusions 9 Teeth 10 are in tight contact with the outer rubber 20 of the power communication cable. When the tensile fixing sleeve 3 is damaged and cannot bear the tension, most of the tension will act on the teeth 10 on the inner surface of the arc-shaped thread protrusion 9. The received pulling force is very small, which can greatly reduce the pulling force borne by the connecting end of the electric communication cable, and make the connecting end of the electric communication cable more firm. The connecting pipe 1 is arranged between the two tensile fixing devices, and the insulating jacket 2 is screwed to the outer peripheral surface of the connecting seat 4 . When performing splicing work, remove the end face rubber of the power communication cable to expose the inner metal wire 21 of the power communication cable, connect the exposed inner metal wire 21 of the two end faces of the power communication cable, and then use hydraulic pliers or a tiger The pliers press the connecting pipe 1 tightly on the junction of the inner metal wires 21 of the two power communication cables, and then screw the insulating jacket 2 to the outer peripheral surface of the connecting seat 4 to protect the internal structure of the device.

In order to ensure the detachable connection between the tensile clamping tube 5 and the connecting seat 4, it is more convenient to install, the end of the connecting seat 4 away from the flange protrusion 7 is provided with a thread groove 12, and the tensile clamping tube 5 passes through The thread groove 12 is threadedly connected with the connecting seat 4 .

In order to facilitate the teeth 10 to bear and resist the tension effect, so that the tension effect on the connecting end is very small, the angle formed by the teeth 10 and the axial direction of the tensile clamping tube 5 is 20°-60°.

In order to apply most of the pulling force to the tensile fixing sleeve 3 first, so that the connecting end receives little pulling force, the inner diameter of the tapered sleeve 6 is smaller than the outer diameter of the power communication cable. Put the tapered sleeve 6 on the power communication cable, apply pressure to the tapered sleeve 6 with hydraulic pliers or vices, and the pressure will finally be applied to the power communication cable socketed with the tapered sleeve 6, so that The outer rubber 20 of the power communication cable is deformed and compressed. When the tension is exerted on the connecting end due to the self-weight of the power communication cable and the shaking of the power communication cable by wind force, most of the tension will first act on the tensile fixing sleeve 3 In this way, the pulling force on the connecting end is very small, which can greatly reduce the pulling force on the connecting end of the power communication cable, and make the connecting end of the power communication cable stronger.

In order to conveniently put the tapered sleeve 6 on the power communication cable, the tensile fixing sleeve 3 is provided with an opening 13, and the flange protrusion 7 is provided with a first protrusion 14 and a second protrusion 15 , the first protrusion 14 and the second protrusion 15 are arranged on both sides of the opening 13, and the first protrusion 14 and the second protrusion 15 are fixedly connected by bolts. The flange protrusion 7 is provided with a first protrusion 14 and a second protrusion 15, and the first protrusion 14 and the second protrusion 15 are fixedly connected by bolts. Such a design can make the tensile fixing sleeve 3 and the power communication cable The compression force at the socket is greater and more sustained.

In order to make the connection between the tensile fixing sleeve 3 and the connecting seat 4 more firm, and prevent the tensile fixing sleeve 3 from falling off from the connecting seat 4 and lose the effect of tensile force, the annular array on the flange protrusion 7 is provided with a first Bolt holes 16, one side of the connecting seat 4 is provided with a flange flange 17, and the flange flange 17 is provided with a second bolt hole 18 matched with the first bolt hole 16, and the first bolt hole 16 matches with the second bolt hole 18 and is provided with fixing bolt 19 at the place.

In order to adapt the device to different conditions of use, there are 2 to 6 compression nuts 8 . By setting the number of compression nuts 8 to 2 to 6, the number of compression nuts 8 to be used can be determined according to the length of the power communication cable, the size of its own weight, and the magnitude of the wind force, so as to ensure that the compression nuts 8 can compress the arc. Shaped thread protrusion 9.

In order to make the end surface of the connecting pipe 1 contact with the tensile clamping pipe 5 to have a certain tensile force effect, the outer diameter of the end surface of the connecting pipe 1 is larger than the outer diameter of the tensile clamping pipe 5 . When the connecting end of the power communication cable is subjected to tension and tends to be separated, the end face of the tensile clamping tube 5 can withstand the connecting tube 1, and the interaction between the tensile clamping tube 5 and the connecting tube 1 can play a certain role in resisting. Pull effect.

Example:

The utility model is a new type of connecting fitting for power transmission and distribution. The main structure includes a tensile fixing device, a connecting pipe 1 and an insulating jacket 2. Two of the tensile fixing devices are symmetrically arranged. The tensile fixing device It includes a tensile fixing sleeve 3, a connecting seat 4 and a tensile clamping tube 5. The tensile fixing sleeve 3 includes a tapered sleeve 6 and a flange protrusion 7. The tensile fixing sleeve 3 is provided with an opening 13 , the flange protrusion 7 is provided with a first protrusion 14 and a second protrusion 15, the first protrusion 14 and the second protrusion 15 are arranged on both sides of the opening 13, the first protrusion 14 and the second protrusion 15 are fixedly connected by bolts, the inner diameter of the tapered sleeve 6 is smaller than the outer diameter of the power communication cable, and the flange protrusion 7 is provided with first bolt holes 16 in an annular array. One side of the connection seat 4 is provided with a flange flange 17, and the flange flange 17 is provided with a second bolt hole 18 matched with the first bolt hole 16, and the first bolt hole 16 and the second bolt hole 18 is matched with a fixed bolt 19, and the end of the connecting seat 4 away from the flange protrusion 7 is provided with a threaded groove 12, and the tensile clamping pipe 5 is threadedly connected with the connecting seat 4 through the threaded groove 12, and the tensile External threads are provided on the outer peripheral surface of the clamping tube 5, and compression nuts 8 are threaded on the outer peripheral surface of the tensile clamping tube 5, and there are 2 to 6 compression nuts 8. In this embodiment There are 3. The end of the tensile clamping tube 5 away from the connecting seat 4 is provided with an arc-shaped threaded protrusion 9, and the inner surface of the arc-shaped threaded protrusion 9 is provided with teeth 10, and the teeth 10 are connected with the tensile clamping tube. The included angle formed by the axial directions of 5 is 20-60 degrees, which is set to 45 degrees in this embodiment. The cusps of the teeth 10 face the side away from the connection seat 4, and a contraction groove 11 is provided between the adjacent arc-shaped threaded protrusions 9, and the connecting pipe 1 is arranged on two of the tensile fixing Between the devices, the outer diameter of the end surface of the connecting pipe 1 is larger than the outer diameter of the tensile clamping pipe 5 , and the insulating jacket 2 is screwed to the outer peripheral surface of the connecting seat 4 .

Claims (8)

1. a kind of new power transmission and distribution splicing fitting, it is characterised in that：It is outer including tension fixing device, splicing sleeve (1) and insulation Cover (2), the tension fixing device is symmetrically arranged with two, and the tension fixing device includes tension fixed cover (3), connecting seat (4) clamp with tension and manage (5), the tension fixed cover (3) includes tapered sleeve pipe (6) and flange projection (7), the flange projection (7) it is fixedly connected with connecting seat (4) side, the connecting seat (4) clamps pipe (5) away from flange projection (7) one end with tension One end is detachably connected, and the tension clamps pipe (5) outer circumference face and is provided with external screw thread, and the tension is clamped on the outside of pipe (5) Clamp nut (8) is threaded with periphery, the tension clamps the one end of pipe (5) away from connecting seat (4) and is provided with arc spiral shell Line projection (9), raised (9) inner surface of the arcuate thread is provided with teeth (10), the cusp direction direction of the teeth (10) Provided with ditch (11) is shunk between side away from connecting seat (4), the adjacent arcuate thread raised (9), the splicing sleeve (1) sets It is placed between two tension fixing devices, the insulating coating (2) is threadedly coupled with connecting seat (4) outer circumference face.

2. a kind of new power transmission and distribution splicing fitting according to claim 1, it is characterised in that：It is remote on the connecting seat (4) Thread groove (12) is provided with from flange projection (7) one end, the tension clamps pipe (5) and passes through thread groove (12) and connecting seat (4) spiral shell Line is connected.

3. a kind of new power transmission and distribution splicing fitting according to claim 1, it is characterised in that：The teeth (10) and tension Angle formed by clamping the axial direction of pipe (5) is 20 degree~60 degree.

4. a kind of new power transmission and distribution splicing fitting according to claim 1, it is characterised in that：The tapered sleeve pipe (6) Internal diameter is less than the external diameter of power communication cable.

5. a kind of new power transmission and distribution splicing fitting according to claim 1, it is characterised in that：The tension fixed cover (3) Opening (13) is provided with, the flange projection (7) is raised provided with first raised (14) and second raised (15), described first (14) and second raised (15) are arranged at the both sides of opening (13), described first raised (14) and the second projection (15) pass through bolt It is fixedly connected.

6. a kind of new power transmission and distribution splicing fitting according to claim 5, it is characterised in that：On the flange projection (7) Annular array is provided with the first bolt hole (16), and connecting seat (4) side is provided with flange flange (17), the flange flange (17) Be provided with match with the first bolt hole (16) and the second bolt hole (18), first bolt hole (16) and the second bolt hole (18) match and locate to be provided with fixing bolt (19).

7. a kind of new power transmission and distribution splicing fitting according to claim 1, it is characterised in that：The clamp nut (8) sets There are 2~6.

8. a kind of new power transmission and distribution splicing fitting according to claim 1, it is characterised in that：The end of the splicing sleeve (1) Face external diameter is more than the external diameter that tension clamps pipe (5).