CN216287661U - Aging-resistant and cracking-resistant sheath for mineral insulated cable - Google Patents

Abstract

The utility model discloses an aging-resistant and cracking-resistant sheath for a mineral insulated cable, which comprises a sheath body, wherein a reinforcing rib is arranged inside the sheath body, a clamping groove is formed in the top of the reinforcing rib, limiting rods are arranged on the reinforcing rib and positioned on two sides of the clamping groove, a connecting ring is movably sleeved on the limiting rods, steel wires are arranged on the top of the connecting ring, a limiting assembly is arranged between the connecting ring and the steel wires, and a non-woven fabric layer is arranged inside the sheath body; has the advantages that: according to the utility model, the reinforcing ribs are additionally arranged in the sheath body, and the non-woven fabric layer is sleeved on the steel wires on the reinforcing ribs, so that not only is the strength of the sheath body increased, but also the tensile property of the sheath body is enhanced, and the situation that the cable is easy to crack under the condition that the geographical position of a mine site is complicated and severe is prevented, thereby ensuring the service life of the mineral insulated cable.

Description

Aging-resistant and cracking-resistant sheath for mineral insulated cable

Technical Field

The utility model relates to the technical field of insulated cables, in particular to an aging-resistant and cracking-resistant sheath for a mineral insulated cable.

Background

The mineral insulated cable is composed of a copper core, a mineral insulated material, a copper metal sheath and the like, has good conductivity, mechanical and physical properties, fire resistance and incombustibility, can ensure fire protection and power supply during the duration of a fire under the condition of the fire, and is mainly used in high-rise buildings, special places and equipment. In order to protect the cable against corrosion and prolong the service life of the mineral insulated cable, it is usually necessary to use a material having an outer sheath on the outside thereof.

The sheath for the existing mineral insulated cable is generally of a common rubber layer structure, and is easy to crack under the condition that the geographical position of a mine is complex and severe, some stains in the mine are easy to enter the sheath from cracks after the sheath cracks, and a core wire and a protective layer made of a conductor are damaged, so that the service life of the mineral insulated cable is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-aging and anti-cracking sheath for a mineral insulated cable, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a mineral insulated cable is with ageing-resistant anti-cracking sheath, includes the sheath body, the inside of sheath body is provided with the strengthening rib, the draw-in groove has been seted up at the top of strengthening rib, the both sides that lie in the draw-in groove on the strengthening rib just all are provided with the gag lever post, the go-between has been cup jointed in the activity on the gag lever post, the top of go-between is provided with the steel wire, be provided with spacing subassembly between go-between and the steel wire, the inside of sheath body is provided with the non-woven fabrics layer.

Preferably, the reinforcing ribs are arranged in a plurality, and the plurality of reinforcing ribs are circumferentially distributed around the sheath body.

Preferably, the clamping groove is of an inverted T-shaped groove opening structure, and the opening of the clamping groove is of an arc-shaped structure.

Preferably, the steel wire is the hunch-up structure of certain radian, and both ends all set up on the go-between, the steel wire is provided with the multiunit, and the multiunit steel wire is the circumference around the sheath body and distributes, and every group steel wire is provided with a plurality ofly, and a plurality of steel wires are arranged along the axial of sheath body and are distributed.

Preferably, the limiting assembly comprises an inserting rod, a groove is formed in the connecting ring, and the end portion of the steel wire is sleeved on the inserting rod in a sliding mode.

Preferably, the inserted bar is fixedly inserted in the groove, and springs are sleeved on two sides of the inserted bar, which are positioned on the steel wire.

Preferably, the plurality of groups of steel wires are all arranged through the non-woven fabric layer.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the reinforcing ribs are additionally arranged in the sheath body, and the non-woven fabric layer is sleeved on the steel wires on the reinforcing ribs, so that not only is the strength of the sheath body increased, but also the tensile property of the sheath body is enhanced, and the situation that the cable is easy to crack under the condition that the geographical position of a mine site is complicated and severe is prevented, thereby ensuring the service life of the mineral insulated cable;

2. according to the utility model, the limiting assembly is arranged between the connecting ring and the steel wire, when the sheath body is pulled by the outside, the steel wire is protected by the elastic action of the spring, the quality of the sheath body is prevented from being influenced by the fracture when the joint between the connecting ring and the steel wire is twisted, and the practicability of the device is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

fig. 3 is a perspective view of the reinforcing bar of the present invention.

In the figure: a sheath body 1; a reinforcing rib 2; a card slot 3; a limiting rod 4; a connecting ring 5; a steel wire 6; a limiting component 7; the insertion rod 71; a recess 72; a spring 73; a non-woven fabric layer 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a mineral insulated cable is with ageing-resistant anti-cracking sheath, including sheath body 1, sheath body 1's inside is embedded to have strengthening rib 2, strengthening rib 2 is provided with a plurality ofly, a plurality of strengthening ribs 2 are the circumference around sheath body 1 and distribute, the metal level structure of strengthening rib 2 for having certain toughness, play the supporting role to sheath body 1, increase sheath body 1's intensity, draw-in groove 3 has been seted up at strengthening rib 2's top, draw-in groove 3 is "T" type notch structure down, it has gag lever post 4 just all to weld in draw-in groove 3's both sides and on the strengthening rib 2, go-between 5 has been cup jointed in the activity on gag lever post 4, strengthening rib 2 has the limiting displacement to go-between 5, prevent that go-between 5 from shifting out in draw-in groove 3.

The steel wires 6 are embedded into the top of the connecting ring 5, the steel wires 6 are of a metal layer structure with certain toughness, the steel wires 6 are of an arched structure with certain radian, two ends of each steel wire 6 are arranged on the connecting ring 5, the steel wires 6 are provided with multiple groups, the multiple groups of steel wires 6 are distributed circumferentially around the sheath body 1, each group of steel wires 6 is provided with multiple steel wires 6, the multiple steel wires 6 are distributed along the axial direction of the sheath body 1, a limiting component 7 is arranged between the connecting ring 5 and the steel wires 6, the limiting component 7 comprises an insertion rod 71, a groove 72 is formed in the connecting ring 5, the insertion rod 71 is fixedly inserted in the groove 72, the end part of each steel wire 6 is slidably sleeved on the insertion rod 71, springs 73 are sleeved on two sides of each steel wire 6 on the insertion rod 71, when the sheath body 1 is pulled by the outside, the steel wires 6 are protected by the elastic action of the springs 73, the insertion rod 71 limits the steel wires 6, and prevents the joints between the connecting ring 5 and the steel wires 6 from being broken when being twisted to influence the quality of the sheath body 1, the practicality of guaranteeing the device, the opening part of draw-in groove 3 is convex structure, prevents the wearing and tearing between steel wire 6 and the strengthening rib 2, and non-woven fabrics layer 8 has been laid to the inside of sheath body 1, and non-woven fabrics layer 8 setting is all run through to multiunit steel wire 6, and non-woven fabrics layer 8 carries out spacing fixed through multiunit steel wire 6, has strengthened sheath body 1's tensile strength.

The working principle is as follows: when the cable is actually used, the reinforcing ribs 2 are additionally arranged in the sheath body 1, the steel wires 6 on the reinforcing ribs 2 are sleeved with the non-woven fabric layer 8, and the plurality of groups of steel wires 6 penetrate through the non-woven fabric layer 8, so that the strength of the sheath body 1 is increased, the tensile property of the sheath body 1 is enhanced, the situation that the cable is easy to crack under the condition that the geographical position of a mine is complex and severe is prevented, and the service life of the mineral insulated cable is ensured; go up the activity of gag lever post 4 and cup jointed go-between 5, strengthening rib 2 has a limiting displacement to go-between 5, prevent that go-between 5 from shifting out in draw-in groove 3, receive the external world when dragging when sheath body 1, spring 73's spring action protects steel wire 6, the tip of steel wire 6 slides and cup joints on inserted bar 71, inserted bar 71 is spacing to steel wire 6, receive the quality that the fracture influences sheath body 1 when preventing that the junction from wriggling between go-between 5 and the steel wire 6, the opening part of draw-in groove 3 is convex structure, prevent wearing and tearing between steel wire 6 and the strengthening rib 2, guarantee the practicality of device.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a mineral insulated cable is with ageing-resistant anti-cracking sheath, includes sheath body (1), its characterized in that: the utility model discloses a protective sheath, including sheath body (1), draw-in groove (3) have been seted up at the inside of sheath body (1), draw-in groove (3) have been seted up at the top of strengthening rib (2), the both sides that lie in draw-in groove (3) on strengthening rib (2) just all are provided with gag lever post (4), go up the activity and have cup jointed go-between (5) in gag lever post (4), the top of go-between (5) is provided with steel wire (6), be provided with between go-between (5) and steel wire (6) spacing subassembly (7), the inside of sheath body (1) is provided with non-woven fabrics layer (8).

2. The aging-resistant and crack-resistant sheath for mineral-insulated cables of claim 1, wherein: the reinforcing ribs (2) are arranged in a plurality of numbers, and the plurality of reinforcing ribs (2) are distributed circumferentially around the sheath body (1).

3. The aging-resistant and crack-resistant sheath for mineral-insulated cables of claim 1, wherein: the clamping groove (3) is of an inverted T-shaped groove opening structure, and the opening of the clamping groove (3) is of an arc-shaped structure.

4. The aging-resistant and crack-resistant sheath for mineral-insulated cables of claim 1, wherein: the steel wire (6) are the hunch-up structure of certain radian, and both ends all set up on go-between (5), steel wire (6) are provided with the multiunit, and multiunit steel wire (6) are the circumference around sheath body (1) and distribute, and every group steel wire (6) are provided with a plurality ofly, and a plurality of steel wires (6) are arranged along the axial of sheath body (1) and are distributed.

5. The aging-resistant and crack-resistant sheath for mineral-insulated cables of claim 1, wherein: the limiting assembly (7) comprises an inserting rod (71), a groove (72) is formed in the connecting ring (5), and the end portion of the steel wire (6) is sleeved on the inserting rod (71) in a sliding mode.

6. The aging-resistant and crack-resistant sheath for mineral-insulated cables of claim 5, wherein: the inserted bar (71) is fixedly inserted in the groove (72), and springs (73) are sleeved on two sides of the inserted bar (71) which are positioned on the steel wire (6).

7. The aging-resistant and crack-resistant sheath for mineral-insulated cables of claim 1, wherein: the multiple groups of steel wires (6) are arranged through the non-woven fabric layer (8).

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