17m-span track foundation beam of 50t gantry crane

Abstract

The utility model relates to a 17m-span track foundation beam of a 50t gantry crane, belongs to the field of municipal subway shield tunnel engineering equipment, and is suitable for a track foundation of the gantry crane. In the prior art, a large enough steel beam is difficult to find on a construction site to meet the walking requirement of a gantry crane, the steel beam is easy to deform, and the construction is complex. The utility model is formed by assembling and welding a plurality of simple steel plates, the two steel plates with the thickness of 20mm, the width of 800mm and the length of 17000mm are used as the upper flange plate and the lower flange plate, the three steel plates with the thickness of 20mm, the height of 1160mm and the length of 17000mm are used as the webs, and the reinforcing ribs with two specifications are additionally arranged on the inner sides of the webs, so that the bearing capacity is improved. The steel beam is light in weight, convenient to install and capable of being repeatedly used, the construction efficiency is remarkably improved, and the cost is reduced. Practical engineering application verifies that the steel beam meets the requirements for strength, rigidity and stability of the 50t gantry crane and has high engineering application value.

Description

Technical Field

[0001] This utility model relates to an important equipment and device used in municipal subway shield tunnel projects, and is suitable for the foundation of gantry cranes used for excavation equipment. Background Technology

[0002] In municipal subway shield tunnel projects, due to site limitations, some gantry crane foundations are not on existing concrete structures. Instead of directly casting reinforced concrete foundation beams on-site, steel beams need to be erected on the existing concrete structure, and steel rails are laid on the steel beams as the foundation for the gantry crane's movement. However, due to the influence of the existing concrete structure, the span of the steel beams needs to be very large, resulting in very large cross-sectional dimensions. Such steel beams are generally not available on construction sites, and such large-span steel beams cannot be purchased or rented on the current market. Therefore, it is necessary to design a steel beam to meet the needs of the large-span gantry crane's movement foundation. Utility Model Content

[0003] The technical problem this invention aims to solve is: to assemble and weld a 17m span steel beam for a 50t gantry crane using only a few simple steel plates. The goal is to ensure the steel beam will not be crushed, unstable, or excessively deformed. Simultaneously, it must prevent instability and deformation during hoisting. Furthermore, the assembly and welding must be simple, and the beam should be lightweight.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: two large steel plates with a thickness of 20mm, a width of 800mm, and a length of 17000mm are used as the upper and lower flange plates, and three large steel plates with a thickness of 20mm, a height of 1160mm, and a length of 17000mm are used as the web plates. The upper and lower flange plates and the web plates are connected by fillet welds. Reinforcing ribs for the web plates and flange plates are provided on the inner side of the web plates. There are two specifications for the reinforcing ribs: one is a reinforcing rib with a width of 340mm, a height of 1150mm, and a thickness of 10mm, and the other is a reinforcing rib with a width of 340mm, a height of 300mm, and a thickness of 10mm. The spacing of the reinforcing ribs with a width of 340mm, a height of 1150mm, and a thickness of 10mm is 1000mm, and the spacing of the reinforcing ribs with a width of 340mm, a height of 300mm, and a thickness of 10mm is also 1000mm. At the support positions at both ends of the steel beam, the spacing of the reinforcing ribs with a width of 340mm, a height of 1150mm, and a thickness of 10mm is 250mm, in order to prevent local instability of the web plates. The steel beams, which are assembled and welded from the above steel plates, are 800mm wide, 1200mm high, and 17m wide, capable of supporting the self-weight and lifting load of a 50t gantry crane.

[0005] Compared with the prior art, the advantages of this utility model are: after welding a few simple steel plates into a steel beam, it can meet the requirements of a 50t gantry crane traveling on the steel beam, and can meet the requirements of strength, rigidity, stability and integrity. At the same time, it is lightweight and can be reused.

[0006] This utility model device can save labor, speed up construction progress, and reduce costs. It has been used multiple times in actual engineering projects, proving that it can meet the requirements for strength, rigidity, stability, and overall integrity. Attached Figure Description

[0007] Figure 1 A schematic diagram of the cross-sectional position of the reinforcing rib, which is 340mm wide, 1150mm high, and 10mm thick, according to this utility model.

[0008] Figure 2 A schematic diagram of the cross-sectional position of the reinforcing rib, which is 340mm wide, 300mm high, and 10mm thick, according to this utility model.

[0009] Figure 3 A front view of the structure of this utility model. Detailed Implementation

[0010] Two large steel plates, each 20mm thick, 800mm wide, and 17000mm long, are used as the upper and lower flanges. Three large steel plates, each 20mm thick, 1160mm high, and 17000mm long, are used as the web. The upper and lower flanges and the web are connected by fillet welds. Reinforcing ribs are provided on the inner side of the web and flanges. There are two specifications for the reinforcing ribs: one is 340mm wide, 1150mm high, and 10mm thick, and the other is 340mm wide, 300mm high, and 10mm thick. The spacing between the 340mm wide, 1150mm high, and 10mm thick reinforcing ribs is 1000mm, and the spacing between the 340mm wide, 300mm high, and 10mm thick reinforcing ribs is also 1000mm. At the support positions at both ends of the steel beam, the spacing between the 340mm wide, 1150mm high, and 10mm thick reinforcing ribs is 250mm to prevent local instability of the web. The steel beams, which are assembled and welded from the above steel plates, are 800mm wide, 1200mm high, and 17m wide, capable of supporting the self-weight and lifting load of a 50t gantry crane.

[0011] The present invention will be further described in detail below with reference to the drawings.

[0012] Figure 1 This is a cross-sectional diagram of the reinforcing ribs of this utility model, which are 340mm wide, 1150mm high, and 10mm thick. Two large steel plates (1) with a thickness of 20mm, a width of 800mm, and a length of 17000mm are used as the upper and lower flanges of the steel beam, and three large steel plates (2) with a thickness of 20mm, a height of 1160mm, and a length of 17000mm are used as the web of the steel beam. The upper and lower flanges and the web are connected by fillet welds. Reinforcing ribs for the web and flanges are provided on the inner side of the web. There are two specifications for the reinforcing ribs: one is a reinforcing rib (3) with a width of 340mm, a height of 1150mm, and a thickness of 10mm, and the other is a reinforcing rib with a width of 340mm, a height of 300mm, and a thickness of 10mm.

[0013] Figure 2 This is a cross-sectional diagram of the reinforcing ribs of this utility model, which are 340mm wide, 300mm high, and 10mm thick. Two large steel plates (1) with a thickness of 20mm, a width of 800mm, and a length of 17000mm are used as the upper and lower flange plates, and three large steel plates (2) with a thickness of 20mm, a height of 1160mm, and a length of 17000mm are used as the web plates. The upper and lower flange plates and the web plates are connected by fillet welds. Reinforcing ribs for the web plates and flange plates are provided on the inner side of the web plates. There are two specifications for the reinforcing ribs: one is a reinforcing rib with a width of 340mm, a height of 1150mm, and a thickness of 10mm, and the other is a reinforcing rib with a width of 340mm, a height of 300mm, and a thickness of 10mm (4).

[0014] Figure 3 This is a front view of the structure of this utility model. Two large steel plates (1) with a thickness of 20mm, a width of 800mm, and a length of 17000mm are used as the upper and lower flange plates, and three large steel plates (2) with a thickness of 20mm, a height of 1160mm, and a length of 17000mm are used as the web plates. The upper and lower flange plates and the web plates are connected by fillet welds. Reinforcing ribs for the web plates and flange plates are provided on the inner side of the web plates. There are two specifications for the reinforcing ribs: one is a reinforcing rib with a width of 340mm, a height of 1150mm, and a thickness of 10mm (3), and the other is a reinforcing rib with a width of 3... The spacing of the reinforcing ribs (4) with a height of 40mm, a height of 300mm, and a thickness of 10mm, and the reinforcing ribs (3) with a width of 340mm, a height of 1150mm, and a thickness of 10mm, is 1000mm. The spacing of the reinforcing ribs (4) with a width of 340mm, a height of 300mm, and a thickness of 10mm is also 1000mm. At the support positions at both ends of the steel beam, the spacing of the reinforcing ribs (5) with a width of 340mm, a height of 1150mm, and a thickness of 10mm is 250mm to prevent local instability of the web (2). The above steel plates are assembled and welded into a steel beam with a width of 800mm, a height of 1200mm, a span of 17m, and capable of bearing the self-weight and lifting weight of a 50t gantry crane.

Claims

1. A 50t gantry crane 17m span rail foundation beam, characterized in that, The steel beam is welded by the following steel plates: Upper and lower flange plates: two steel plates with thickness of 20 mm, width of 800 mm and length of 17000 mm; Web plates: three steel plates with thickness of 20 mm, height of 1160 mm and length of 17000 mm, welded between the upper and lower flange plates; Stiffeners: provided on the inner side of the web plates and connected with the flange plates, including two kinds of specifications: One kind of stiffener: with width of 340 mm, height of 1150 mm and thickness of 10 mm, with interval of 1000 mm and interval of 250 mm at the position of the end support of the steel beam; The other kind of stiffener: with width of 340 mm, height of 300 mm and thickness of 10 mm, with interval of 1000 mm.

2. The 50t gantry 17m span rail foundation beam according to claim 1, characterized in that, The upper and lower flange plates, the web plates and the stiffeners are connected by fillet welding.

3. The 50t gantry 17m span rail foundation beam of claim 1, wherein, The steel beam has structural dimensions of width of 800 mm, height of 1200 mm and span of 17 m.

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