CN201531845U

CN201531845U - Chaplet strengthening type rod of street lamp, power line, billboard and wind-driven generator

Info

Publication number: CN201531845U
Application number: CN2009201623926U
Authority: CN
Inventors: 赵宽
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-07
Filing date: 2009-07-07
Publication date: 2010-07-21
Anticipated expiration: 2019-07-07

Abstract

The utility model discloses a chaplet strengthening type rod of a street lamp, a power line, a billboard and a wind-driven generator, which consists of a foundation rod seat, a main rod with a flange, a connecting rod with the flange, an extending rod with the flange, a supporting point rod with the flange, a supporting point extending rod with the flange and a bolt; the inner diameter of a round tube is internally provided with a three-arris chaplet, a four-arris chaplet and a five-arris chaplet, so as to lead the chaplets and the round tube to form the distribution characteristics of H-shaped sections and rectangular sections, thus enhancing the rigidity and strength of the rod, leading the bent strength and bearing rigidity of the rod to be remarkably strengthened by a method of enhancing the chaplets in the tube, and further improving the safety performances of the street lamp, the power line, the billboard and the wind-driven generator.

Description

Support core enhancement mode street lamp, power line, billboard, wind-driven generator bar

Technical field

The utility model relates to a kind of street lamp, power line, billboard, wind-driven generator bar, particularly supports core enhancement mode street lamp, power line, billboard, wind-driven generator bar.

Technical background

Transitional street lamps, power line, billboard, wind-driven generator bar have the circular hollow steel pipe, many ribs type hollow steel pipe also has reinforcing bar to mix the earth pipe, and hollow steel pipe construction weight is low weight, but its rigidity and intensity are all mixed the earth pipe not as good as reinforcing bar, but reinforcing bar mixes the earth pipe from great, and construction needs large-scale lifting erection unit, cause the construction cost height, incident often has generation because a large amount of hollow steel pipes that adopt, practice find to roll over by hollow steel pipe during typhoon, has caused the public safety threat.Particularly some electric power bars also can cause electric power accident.

Summary of the invention

The utility model is that a kind of rigidity and intensity that can strengthen bar under the prerequisite that does not increase product weight will be provided, the method that strengthens by pipe inner support core significantly strengthens the bending strength of bar and pressurized rigidity, thereby improves support core enhancement mode street lamp, power line, billboard, the wind-driven generator bar of security performance.

According to having moment of flexure that shearing is also arranged on transitional street lamps, power line, billboard, its cross section of wind-driven generator bar actual loading situation, occur bending and deformation this crooked shear-bow that claims.Because the bearing capacity of bar is mainly by direct stress control, according to the strength condition of direct stress as can be known, the maximum on the bar cross section is directly proportional with maximal bending moment, is inversely proportional to the bending resistant section coefficient of cross section.The bending resistance that improves bar is mainly from improving (cross section moment of flexure) M _MaxAnd reduction (bending resistant section coefficient) W _zSet about two aspects.Rule of thumb data can be according to (area in bending resistant section coefficient/cross section) ratio W _z/ A selects.

The bending resistant section coefficient is on the one hand relevant with the size in cross section, is that the shape in cross section is relevant with the distribution situation in cross section also simultaneously, and the reasonable section shape of bar should be the bending resistant section coefficient that obtains maximum with minimum area.The economic degree in the cross section of bar can be used W _z/ A ratio is weighed.This ratio is big more, just more economical rationality of cross section, below circle, rectangle, the ratio that reaches the I-shaped cross-section are listed, see Table 1;

As can be seen from Table 1, the economic degree in cross section is the I-shaped rectangle that is better than, and rectangle is better than circle.This is to should be far away more from neutral axis, direct stress is big more, so should make most distribution of material at a distance from neutral axis, material just can play one's part to the full, the I-shaped cross-section just meets this point preferably, in order to make support core enhancement mode street lamp, power line, billboard, wind-driven generator bar have transverse property I-shaped, rectangle, triangular, four ribs, five ribs support core are set in the internal diameter of pipe, make support core and circular tube wall constitute the distribution character of similar I-shaped, square-section, thus the raising security performance.

Figure DEST_PATH_GA20190697200920162392601D00021

Realize the technical scheme of invention

The internal diameter triangular of bar, four ribs, five ribs support core, the inwall that reaches the draw and pipe by cold drawn tube technique is combined closely, for the overall performance that makes bar improves, bar is divided into basic pole socket, flanged mobile jib, flanged connecting rod, flanged extension rod, flanged fulcrum bar, orchid is managed at the two ends of each bar respectively, by flange each section connected, the fulcrum bar is to be used for equipment on the mounting rod, can avoid welding punching like this and avoid producing dangerous spot on vertical rod, destroys integral rigidity and intensity.

Positive effect

Triangular, four ribs, five ribs support core are set in the internal diameter of pipe, make support core and circular tube wall constitute the distribution character of similar I-shaped, square-section, strengthen the rigidity and the intensity of bar, the method that strengthens by pipe inner support core significantly strengthens the bending strength of bar and pressurized rigidity, thereby improves street lamp, power line, billboard, wind-driven generator security performance.

Description of drawings

Fig. 1 is the utility model support core enhancement mode street lamp, power line, billboard, wind-driven generator bar front view;

Fig. 2, Fig. 3, Fig. 4, Fig. 5, be the A-A cutaway view of Fig. 1;

Among Fig. 1, basic pole socket 1, flanged mobile jib 2, flanged connecting rod 3, flanged extension rod 4, flanged fulcrum bar 5, flanged fulcrum extension rod 6, bolt 7;

Among Fig. 2, Fig. 3, Fig. 4, Fig. 5, pipe 2-1, support core 2-2;

Specific embodiment

With reference to Fig. 1, basis pole socket 1 one ends are flanges, the other end is an expanding reach, can big fixed-area be arranged at subsurface, to improve stability, flanged mobile jib 2 two ends are flanges, flanged connecting rod 3 axial two ends are that flange radially has flanged fulcrum bar 5, flanged fulcrum extension rod 6 one ends are flanges, with reference to Fig. 2, all supportted triangular or four ribs or five ribs support core 2-2 in the internal diameter of pipe 2-1, according to size decision triangular or four ribs or the five ribs support core of maneuvering load, with reference to Fig. 1, each parts connects employing bolt 7.

Claims

1. one kind is supportted core enhancement mode street lamp, power line, billboard, wind-driven generator bar, fixedly form by basic pole socket (1), flanged mobile jib (2), flanged connecting rod (3), flanged extension rod (4), flanged fulcrum bar (5), flanged fulcrum extension rod (6), support core (2-2), bolt (7), it is characterized in that, triangular, four ribs, five ribs support core are set, I-shaped, square-section distribution that support core and circular tube wall constitute in the internal diameter of pipe.