CN2869218Y - Pole - Google Patents

Abstract

A junction rod comprises a rod body with a hollow cavity. The rod body is composed of a rod core and a shield coat that is jointed to at least one lateral surface of the rod core. The rod body comprises a rod core and a shield coat that are jointed together, and the shield coat is made from the stainless steel material, featured with strong corrosion-resistant capability. The rod core is made from common steel plate so that the manufacturing cost of the rod body is very low to reduce the manufacturing cost of the whole guard rail and facilitate promoting and applying.

Description

The line bar

Technical field

The utility model relates to a kind of line bar, mainly refers to electric pole and light pole.

Background technology

In the prior art, the line bar comprises the body of rod, has the cavity that is used for winding displacement in the body of rod, the body of rod is body formed by lamina usually, can be divided into two kinds of the steel pole body and the stainless steel bodies of rod, perishable the getting rusty in preceding a kind of inside and outside wall surface, outer wall surface particularly, because long term exposure is out of doors in the air, thus moisture-sensitive tanned by the sun, so it is rotten easily to get rusty; Then a kind ofly made by stainless steel material, its raw materials for production involve great expense, and make that the manufacturing cost of the body of rod is higher, thereby cause the manufacturing cost of whole line bar higher, so be difficult to apply.

Summary of the invention

The utility model purpose provides a kind of line bar, and its surperficial corrosion resistance is stronger, and manufacturing cost is lower.

For achieving the above object, the technical solution adopted in the utility model is: a kind of line bar, comprise the body of rod with cavity, and the described body of rod comprises the bar core, be fitted in the protective casing layer at least one side surface of described bar core.

At least one parts in described bar core and the protective casing layer with another parts facing surfaces on have a plurality of burrs.

Because technique scheme utilization, the utility model compared with prior art has following advantage: the body of rod comprises bar core and the protective casing layer that fits together, protective casing layer can be made by stainless steel material, it has the strong characteristics of corrosion resistance, and the bar core still can adopt general steel plate to make, it can make the manufacturing cost of the body of rod lower, to reduce the manufacturing cost of whole line bar, so that it is applied.

Description of drawings

Accompanying drawing 1 is the front view of embodiment one of the present utility model;

Accompanying drawing 2 is the A-A sectional drawing in the accompanying drawing 1;

Accompanying drawing 3 is the main sectional view of embodiment one of the present utility model;

Accompanying drawing 4 is the main sectional view of embodiment two of the present utility model;

Accompanying drawing 5 is the enlarged drawing of the B part in the accompanying drawing 4;

Wherein: 1, the body of rod; 2, cavity; 3, bar core; 4, protective casing layer; 5, burr;

The specific embodiment

Shown in accompanying drawing 1-accompanying drawing 4, a kind of line bar comprises the body of rod 1 with cavity 2, and the described body of rod 1 comprises bar core 3, be fitted in the protective casing layer 4 at least one side surface of described bar core 3.In the embodiment one shown in accompanying drawing 2 one accompanying drawings 3; all be coated with protective casing layer 4 on the inner surface of bar core 3 and the external surface; both can produce protective effect to the outer wall surface of the whole body of rod 1; to prevent to be exposed to the external surface rust corrosion of the body of rod 1 in the open-air; can produce protective effect to the inner wall surface of the body of rod 1 again simultaneously, to prevent because of the cavity 2 interior inner wall surface rust corrosions that cause the body of rod 1 of rain leakage to the body of rod 1.And in the embodiment shown in the accompanying drawing 4 two, be coated with protective casing layer 4 on the side surface of bar core 3, for the external surface to the body of rod 1 plays protective action, this protective casing layer 4 must be arranged at the outside of bar core 3.

Shown in accompanying drawing 5, at least one parts in described bar core 3 and the protective casing layer 4 with another parts facing surfaces on have a plurality of burrs 5.In the embodiment that the utility model adopts usually, all have a plurality of burrs 5 on the apparent surface of bar core 3 and protective casing layer 4, so that bar core 1 and protective casing layer 2 are fit together, and help welding between two parts, a plurality of burrs 5 are randomly dispersed on the surface of bar core 1 or protective casing layer 2 usually, also can distribute to be banded.

Claims (2)

1, a kind of line bar comprises it is characterized in that the have cavity body of rod (1) of (2): the described body of rod (1) comprises bar core (3), be fitted in the protective casing layer (4) at least one side surface of described bar core (3).

2, line bar according to claim 1 is characterized in that: at least one parts in described bar core (3) and the protective casing layer (4) with another parts facing surfaces on have a plurality of burrs (5).

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