CN112290465A

CN112290465A - Ball type rubber sheath

Info

Publication number: CN112290465A
Application number: CN202011123629.7A
Authority: CN
Inventors: 钟鸣; 张建军; 刘守全; 熊俊; 彭立杰
Original assignee: Beijing Zhuoyue Electric Power Construction Co ltd; State Grid Beijing Electric Power Co Ltd
Current assignee: Beijing Zhuoyue Electric Power Construction Co ltd; State Grid Beijing Electric Power Co Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-01-29

Abstract

The invention discloses a ball type rubber sheath which comprises a rubber pad, wherein a plurality of steel balls are embedded in the rubber pad, and the steel balls rotate on the rubber pad. The special ball type rubber sheath for laying the cable in the tunnel is used for dragging and dropping the cable in different places in the cable tunnel, effectively solves the problem of abrasion of the outer sheath of the cable, achieves the expected target, and can be popularized well in other similar environments.

Description

Ball type rubber sheath

Technical Field

The invention relates to the field of electric power, in particular to a ball type rubber sheath.

Background

The cables in the power tunnel are laid more and more, and in the newly-added power delivery project and the main distribution network cable rush-repair project, new cables are often required to be laid in the cable tunnel, the newly-laid cables inevitably wear an outer sheath of the cables which are already in transport when being dragged, particularly, the newly-laid cables can continuously wear the same position of the cables which are in transport at a turning position, so that the outer sheath of the cables is damaged, hidden dangers are buried for the subsequent operation of the cables, and the reliable operation of a cable network is influenced. At present, the protection is to use a four-foot iron stool (generally only installed under a wellhead for preventing objects falling from the wellhead) in the traditional method for transporting cables, but the four-foot iron stool is difficult to move in narrow places in certain spaces, is inconvenient to flexibly transport in tunnels due to self weight and large size, can cause the hidden danger caused by the extrusion of cables, cannot completely and effectively achieve the purpose of protecting cables in the transportation process, and especially cannot effectively avoid the abrasion of the cables laid newly at turning positions. Therefore, the problem that the cable operation management unit and the cable construction unit are urgently needed to solve is to improve the construction current situation.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

In view of the above technical problems in the related art, the present invention provides a ball type rubber sheath, which can solve the above problems.

In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:

the ball type rubber sheath comprises a rubber pad, wherein a plurality of steel balls are embedded in the rubber pad, and the steel balls rotate in the rubber pad.

Further, the length, width and height of the rubber pad are 220mm 10mm respectively.

Further, the height of the steel ball protrusion is 5 mm.

Furthermore, the steel balls are uniformly distributed on the rubber pad in a grid shape, and the distance between every two adjacent steel balls is 20 mm.

Furthermore, the four sides of the rubber pad are provided with expansion snap fasteners.

Furthermore, a buckle binding band is arranged on the rubber pad.

The invention has the beneficial effects that:

1. the special ball type rubber sheath for laying the cable in the tunnel is used for dragging and dropping the cable in different places in the cable tunnel, effectively solves the problem of abrasion of the outer sheath of the cable, achieves the expected target, and can be popularized well in other similar environments.

2. Through the research of complex construction environment and bearing capacity, fixed mode in the tunnel, reach quick installation dismantlement, modularization concatenation, 100% protection in the function of transporting cable oversheath, can popularize and apply in other complicated environments of electric power.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a top view of a ball-on rubber boot;

FIG. 2 is a side view of a ball-on rubber boot;

FIG. 3 is a top view of the splicing of multiple ball rubber boots;

FIG. 4 is a cross-sectional view of a ball-on rubber jacket over a cable;

fig. 5 is a diagram of practical application of the ball type rubber boot.

In the figure: 1. rubber pad, 2 steel balls, 3 expansion snap fasteners, 4 buckle bandage.

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 that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

As shown in fig. 1 to 5, the ball type rubber sheath according to the embodiment of the present invention includes a rubber pad 1, a plurality of steel balls 2 are embedded in the rubber pad 1, and the steel balls 2 rotate on the rubber pad 1.

In one embodiment of the present invention, the length, width and height of the rubber mat 1 are 220mm x 10mm, respectively.

In one embodiment of the present invention, the height of the protrusion of the steel ball 2 is 5 mm.

In a specific embodiment of the present invention, the steel balls 2 are uniformly distributed on the rubber pad 1 in a grid shape, and the distance between adjacent steel balls 2 is 20 mm.

In one embodiment of the invention, the four sides of the rubber pad 1 are provided with expansion snap fasteners 3.

In one embodiment of the present invention, the rubber pad 1 is provided with a snap belt 4.

In order to facilitate understanding of the above-described technical aspects of the present invention, the above-described technical aspects of the present invention will be described in detail below in terms of specific usage.

In a specific use, according to the ball type rubber sheath, the size of the ball type rubber sheath is 220mm x 10mm (10 mm is the thickness of the rubber gasket 1, and the height of the steel ball 2 is 5 mm). In order to increase the external force impact resistance of the rubber sheath, polished steel balls 2 (a steel ball belt base can rotate) are embedded every 20 mm.

Because the striking and the abrasion of the falling object are both above the cable, the invention adopts a semi-wrapping structure, thereby effectively protecting the cable and simultaneously furthest ensuring the heat dissipation effect of the cable. When used on cables individually subjected to large loads, intermittent installation (suggested separation distance is 5 cm) may be performed to further enhance heat dissipation performance.

Meanwhile, as a plurality of high-voltage cables are arranged in a delta shape, the high-voltage cable fixing device adopts an expandable structure, 3 round holes are respectively arranged on the periphery of the rubber pad 1 for snap-fastener type expansion, and 2 rectangular holes are arranged for elastic type fastener fixing on the cables. The bandage adopts buckle formula braces, nylon material, and length 500mm, width 30mm, thickness 2 mm.

After the ball type rubber sheath is rubbed with a single 110kV single-core crosslinked polyethylene cable which is 3 meters long, the abrasion degree of the ball type rubber sheath is less than or equal to 3mm, the abrasion of the cable in operation is less than or equal to 0.5mm, and the abrasion of a newly laid cable is less than or equal to 1 mm.

After being hit by a concrete block which is placed at a height of 1m and a weight of 5kg from the ball type rubber sheath, the protected cable is not damaged.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The ball type rubber sheath comprises a rubber pad (1) and is characterized in that a plurality of steel balls (2) are embedded in the rubber pad (1), and the steel balls (2) rotate in the rubber pad (1).

2. The ball-type rubber boot according to claim 1, characterized in that the rubber mat (1) has a length, width and height of 220mm x 10mm, respectively.

3. The ball type rubber boot as claimed in claim 1, wherein the height of the steel ball (2) projection is 5 mm.

4. The ball type rubber sheath according to claim 1, wherein the steel balls (2) are uniformly distributed on the rubber pad (1) in a grid shape, and the distance between adjacent steel balls (2) is 20 mm.

5. A ball-type rubber boot according to claim 1, characterized in that the rubber mat (1) is provided with expansion snap fasteners (3) on all four sides.

6. The ball-type rubber boot according to claim 1, characterized in that a snap-on strap (4) is provided on the rubber pad (1).