CN205527355U - Rectangle honeycomb formula main longitudinal grider - Google Patents

Abstract

The utility model relates to a rectangular honeycomb main longitudinal beam, which can effectively solve the problems of poor rigidity of the main longitudinal beam and difficult operation in a narrow space. 1. The upper cover plate installed horizontally on the upper end of the web and the lower cover plate horizontally installed on the lower end of the web form an integral structure with a rectangular cross section. The upper cover plate, the web The inner partition plate and the lower cover plate are connected together. The inner side of the upper cover plate is provided with a first rib along the longitudinal direction of the beam body, the inner side of the web plate is provided with a second rib along the longitudinal direction of the beam body, and the inner side of the lower cover plate is arranged along the longitudinal direction of the beam body. The third reinforcing rib is provided, and the upper cover is provided with a track. The utility model has a novel and unique structure, is simple and reasonable, easy to produce, low in cost, small in size, easy to install and use, safe and reliable, and greatly improves the overall performance of the bridge erecting machine. , easy to use, good effect, good social and economic benefits.

Description

A rectangular honeycomb main longitudinal beam

technical field

The utility model relates to a main longitudinal girder used by a bridge erecting machine and a gantry crane, in particular to a rectangular honeycomb type main longitudinal girder.

Background technique

Longitudinal beams are the main equipment (components) of bridge erecting machines and gantry cranes. The main longitudinal beams of existing bridge erecting machines and gantry cranes are generally solid web or truss girder structures, which are heavy, have a large wind area, unstable construction, and unsafe high-altitude operations. Although the weight of truss girders is lighter than that of solid web girders, The wind-receiving area is small, but the rigidity in terms of performance has not been improved, the integrity has declined, the construction is unsafe, and the quality cannot be effectively guaranteed. At the same time, the width of the beam body is large under the premise that the strength meets the requirements. Installation and use, therefore, the improvement and innovation of the main longitudinal beam is imperative.

Contents of the invention

In view of the above situation, in order to overcome the defects of the prior art, the purpose of this utility model is to provide a rectangular honeycomb main longitudinal beam, which can effectively solve the problems of poor rigidity of the main longitudinal beam and difficult operation in a narrow space.

The technical scheme solved by the utility model is that a rectangular honeycomb main longitudinal beam includes a beam body, the beam body is composed of vertically arranged webs on both sides, an upper cover plate horizontally installed on the upper end of the web, and a horizontal The lower cover plate installed at the lower end of the web has a rectangular integrated structure in cross-section. Inside the beam body, there are internal partitions connecting the upper cover plate, the web plate and the lower cover plate at intervals along the lengthwise direction. The upper cover The inner side of the plate is provided with a first reinforcing rib along the longitudinal direction of the beam body, the inner side of the web is provided with a second reinforcing rib along the longitudinal direction of the beam body, the inner side of the lower cover plate is provided with a third reinforcing rib along the longitudinal direction of the beam body, and the upper cover plate is provided with a track.

The utility model is novel and unique in structure, simple and reasonable, easy to produce, low in cost, small in size, convenient in installation and use, safe and reliable, greatly improves the overall performance of the bridge erecting machine, convenient in use, good in effect, and has good social and economic benefits.

Description of drawings

Fig. 1 is the front view (partial cutaway) of the utility model.

Fig. 2 is a cross-sectional view along A-A of Fig. 1 of the present invention.

Fig. 3 is a sectional view along B-B direction of Fig. 1 of the present invention.

detailed description

The specific embodiments of the present utility model will be described in further detail below in conjunction with the accompanying drawings.

Given by Fig. 1-3, the utility model comprises beam body, and beam body is by the web 6 that is vertically arranged on both sides, the upper cover plate 2 that is installed on the upper end of described web horizontally and is installed on described web horizontally. The cross-section formed by the lower cover plate 8 at the lower end of the plate is a rectangular integral structure, and the inside of the beam body is provided at intervals along the lengthwise direction with the inner partition plate 7 connecting the upper cover plate, the web plate and the lower cover plate together, and the inner side of the upper cover plate 2 A first reinforcing rib 3 is arranged longitudinally along the beam body, a second reinforcing rib 4 is arranged on the inner side of the web 6 along the longitudinal direction of the beam body, a third reinforcing rib 5 is arranged on the inner side of the lower cover plate 8 along the longitudinal direction of the beam body, and the upper cover plate 2 Set with track 1.

In order to ensure the effect of use, the web 6 is provided with honeycomb holes 16 that penetrate inside and outside, the number of honeycomb holes on the webs on both sides is equal and correspond to each other, and there is a seam patch between the two honeycomb holes on the same side. Strong plate 17, honeycomb holes make the side of the beam body windward small, strong wind resistance, and the seam reinforcement plate can ensure the strength of the beam body;

The center of the inner partition 7 has a through hole 7a;

One end of the web is provided with a male core board 13 , and the other end is provided with a female core board 10 corresponding to the male core board 13 .

The male core board 13 is equipped with a male core board reinforcing plate 14, which improves the overall rigidity and section modulus;

The mother core board 10 is provided with a mother core board cover plate 11 and a mother core board spacer plate 12, which improves the overall rigidity and section modulus. The mother core board 10 is equipped with chord coupling pins 15a, 15b. When assembling, The male core boards 13 at the ends of the two beams face the female core boards 10, and then they are connected together through the chord connection pins 15a and 15b, so that the assembly of the two beams can be completed;

The left and right ends of the lower cover plate 8 stretch out from the outside of the web, and the hanging wheel track 9 is installed on the lower cover plate of the protruding part.

The entire section of the main longitudinal beam of the utility model is rectangular, and there are honeycomb holes on the web and the inner partition, so that the entire main longitudinal beam has a rectangular honeycomb structure, and its material is made of section steel and steel plate. The two webs can be cut by a certain thick steel plate along the predetermined folding line, and then welded to each other in dislocation. The first reinforcing rib of the upper cover plate can be welded by 1/2 I-beam, and the inner partitions with a certain distance are arranged in the length direction to connect the four sides of the rectangle together, and jointly bear the force, so as to enhance the rigidity and To prevent the instability of the web, in addition, a third rib is installed on the lower cover plate, and a second rib is installed on the inner side of the web, which further improves the overall rigidity and section modulus.

During installation, the male core plate and the female core plate between each girder are connected together through string joint pins to complete the assembly of the entire main longitudinal girder, and the girder trolley on the bridge erecting machine runs on the track.

Compared with the main longitudinal beam of the existing bridge erecting machine, the utility model has obvious advantages and positive effects. It is rectangular, which greatly reduces the width of the beam body section in the case of inconvenient strength, and is easy to install and use in some narrow spaces. The honeycomb-shaped holes on both sides are beautiful and convenient for installing pipes and cables. More importantly, Greatly reduces the wind area and increases the safety of high-altitude operations. The joints are all connected by pin shafts, the disassembly and assembly are very simple and fast, adapting to the characteristics of the fluidity of the bridge erecting machine, it can save disassembly and transportation costs by nearly 40%. Compared with the truss beam, the utility model has a slightly increased weight, but the stiffness Increased by 40%, and the integrity and safety have also been greatly improved. The utility model is a component with strong applicability, and can also be applied to other equipment, such as beams of gantry cranes, etc., and its popularization and application will surely make creative contributions to bridge construction.

Claims (7)

1. A rectangular honeycomb main longitudinal beam, comprising a beam body, characterized in that the beam body is composed of vertically arranged webs (6) on both sides, and an upper cover plate (2) horizontally mounted on the top of the web ) and the lower cover plate (8) installed horizontally on the lower end of the web plate form a rectangular integrated structure in cross-section. The inner partition (7), the inner side of the upper cover plate (2) is provided with the first reinforcing rib (3) along the longitudinal direction of the beam body, the inner side of the web plate (6) is provided with the second reinforcing rib (4) along the longitudinal direction of the beam body, the lower cover A third reinforcing rib (5) is arranged on the inner side of the plate (8) along the longitudinal direction of the beam body, and a track (1) is arranged on the upper cover plate (2). 2. The rectangular honeycomb main longitudinal beam according to claim 1, characterized in that, the web (6) is provided with honeycomb holes (16) through the inside and outside, and the number of honeycomb holes in the webs on both sides is equal and In one-to-one correspondence, a seam reinforcing plate (17) is arranged on the web between two honeycomb holes on the same side. 3. The rectangular honeycomb main longitudinal girder according to claim 1, characterized in that there is a through hole (7a) in the center of the inner partition (7). 4. The rectangular honeycomb main longitudinal beam according to claim 1, characterized in that, one end of the web is provided with a male core plate (13), and the other end is provided with a corresponding to the male core plate (13). Motherboard (10). 5. The rectangular honeycomb main longitudinal beam according to claim 4, characterized in that, the male core board (13) is equipped with a male core board reinforcement board (14). 6. The rectangular honeycomb main longitudinal beam according to claim 4, characterized in that, the mother core board (10) is provided with a mother core board cover plate (11) and a mother core board partition rib (12) , Chord coupling pins (15a, 15b) are housed on the mother core plate (10). 7. The rectangular honeycomb main longitudinal beam according to claim 1, characterized in that, the left and right ends of the lower cover plate (8) protrude from the outside of the web, and the lower cover plate of the protruding part is equipped with hanging wheels track (9).