Foldable steel beam for transverse movement of bridge girder erection machine

Abstract

The utility model discloses a foldable steel beam used for transverse movement of a bridge girder erection machine, which comprises a plurality of continuously arranged steel beam sections, any steel beam section comprises a first steel beam and a second steel beam which are arranged in parallel, and the first steel beam and the second steel beam are connected into a whole through a connecting beam. Rails are arranged on the top surfaces of the first steel beam and the second steel beam; every two adjacent first steel beams are hinged through a first connecting device. Every two adjacent second steel beams are detachably connected through a second connecting device. According to the utility model, the problem that the dismounting, mounting and recovering workload is large due to the overlength overhanging of the steel beam when the transversely-moving steel beam under the middle supporting leg of the bridge girder erection machine moves forwards to pass through the hole can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, and more specifically, to a foldable steel beam used for the transverse movement of a bridge erecting machine. Background Art

[0002] When a large-tonnage bridge-erecting machine is used to erect bridge beams, the middle leg of the bridge-erecting machine needs to move horizontally by means of a steel beam underneath. The length of the steel beam is generally more than 30 meters. After the bridge-erecting machine has erected one hole of a beam, the middle leg of the bridge-erecting machine needs to hang the steel beam and move forward one hole. The overhangs at both ends of the steel beam cause inconvenience in construction. In addition, if there are vertical protruding obstacles on both sides of the beam to be erected (such as outer retaining wall steel bars), the steel beam needs to be disassembled into multiple sections each time it moves forward, and then tied together. After the overall forward movement is completed, the multiple sections of the disassembled steel beam need to be untied and then connected as a whole. Each disassembly and assembly is time-consuming and labor-intensive, and the operation is inconvenient. Utility Model Content

[0003] Another object of the utility model is to provide a foldable steel beam for the transverse movement of a bridge-building machine, which is used to solve the problem of large workload of disassembly, installation and restoration caused by excessive cantilevering of the steel beam when the transverse movement steel beam under the middle leg of the bridge-building machine moves forward through a hole, thereby improving construction efficiency.

[0004] In order to achieve these purposes and other advantages according to the utility model, a foldable steel beam for transverse movement of a bridge erecting machine is provided, comprising a plurality of continuously arranged steel beam sections, any steel beam section comprising a first steel beam and a second steel beam arranged parallel to each other, the first steel beam and the second steel beam being connected as a whole by a connecting beam, and the top surfaces of the first steel beam and the second steel beam being provided with tracks;

[0005] Among them, two adjacent first steel beams are hinged by a first connecting device; and two adjacent second steel beams are detachably connected by a second connecting device.

[0006] Preferably, the first connecting device comprises:

[0007] Two first flange plates, which are arranged between two adjacent first steel beams, and any first flange plate is fixedly connected to the end of the corresponding first steel beam;

[0008] The hinge has two hinged parts respectively connected with the two first flange plates, and the hinge is arranged close to the outer side of the first steel beam.

[0009] Preferably, the second connecting device includes two second flange plates, which are arranged between two adjacent second steel beams, any second flange plate is fixedly connected to the end of the corresponding second steel beam, and the two second flange plates are detachably connected by a plurality of first bolts.

[0010] Preferably, a plurality of first bolts are symmetrically arranged on both sides of the second flange plate.

[0011] Preferably, the first connecting device further comprises a plurality of second bolts, which are arranged close to the inner side of the first steel beam and are used for detachably connecting the two first flanges located at the inner side parts of the first steel beam.

[0012] Preferably, it also includes a limiting device, which is arranged at one end of the first steel beam away from the first flange plate, and the limiting device includes a limiting rod, which is a U-shaped structure, and one free end of the limiting rod is hinged to the end of one of the first steel beams, and the end of the other first steel beam is provided with a limiting groove, and the other free end of the limiting rod is clamped in the limiting groove.

[0013] The utility model includes at least the following beneficial effects: the utility model can quickly transform the steel beam into a folded state through the setting of hinged and detachable connection, so that the bridge-building machine can pass through the hole smoothly; and the hinged setting makes the two adjacent steel beam sections always maintain a connection relationship even in the folded state, which can reduce the binding and disassembly work, and also can improve the alignment efficiency during installation, thereby improving the construction efficiency.

[0014] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the foldable steel beam of the utility model in the extended state;

[0016] Figure 2 It is a structural schematic diagram of the foldable steel beam of the utility model in a folded state;

[0017] Description of the Figures in the Specification:

[0018] 1. First steel beam, 2. Second steel beam, 3. Transverse connecting beam, 4. Oblique connecting beam, 5. Track, 6. First flange plate, 7. Hinge, 8. Second flange plate, 9. First bolt, 10. Second bolt. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0020] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] like Figure 1-2 As shown, the utility model provides a foldable steel beam for transverse movement of a bridge erecting machine, comprising a plurality of continuously arranged steel beam sections, any steel beam section comprising a first steel beam 1 and a second steel beam 2 arranged parallel to each other, the first steel beam 1 and the second steel beam 2 being connected as a whole by a connecting beam, and the top surfaces of the first steel beam 1 and the second steel beam 2 being provided with tracks 5;

[0022] Among them, two adjacent first steel beams 1 are hinged by a first connecting device; and two adjacent second steel beams 2 are detachably connected by a second connecting device.

[0023] In the technical scheme, the first steel beam 1 and the second steel beam 2 of any steel beam section are connected to form a stable space frame structure through a connecting beam, the connecting beam includes two transverse connecting beams 3 and an oblique connecting beam 4, the two transverse connecting beams 3 and the oblique connecting beam 4 form a Z-shaped structure, and the track 5 is the transverse track 5 of the legs in the bridge erection machine; the two adjacent first steel beams 1 are hinged by a first connecting device, and the two adjacent second steel beams 2 are detachably connected by a second connecting device. In the initial state, the steel beams are in an extended state, and the two first steel beams 1 are hinged by the first connecting device. The two second steel beams 2 are connected together as a whole through a second connecting device; when the bridge-building machine needs to pass through a hole and the two ends of the steel beam are cantilevered too long, the two second steel beams 2 can be separated by the second connecting device, and the two first steel beams 1 can be folded by the first connecting device to transform the steel beams into a folded state, so that the bridge-building machine can pass through the hole smoothly. The utility model uses a hinged design to ensure that the two adjacent steel beam sections always maintain a connection relationship even in a folded state, which can reduce the binding and disassembly work, and at the same time can improve the alignment efficiency during installation and improve construction efficiency.

[0024] In another technical solution, the first connecting device includes:

[0025] Two first flange plates 6, which are arranged between two adjacent first steel beams 1, and any first flange plate 6 is fixedly connected to the end of the corresponding first steel beam 1;

[0026] The hinge 7 has two hinged parts respectively connected to the two first flange plates 6 , and the hinge 7 is arranged close to the outer side of the first steel beam 1 .

[0027] In the present technical solution, the two first steel beams 1 are hinged via a hinge 7 , and the first flange plate 6 facilitates the installation of the hinge 7 .

[0028] In another technical solution, the second connecting device includes two second flange plates 8, which are arranged between two adjacent second steel beams 2. Any second flange plate 8 is fixedly connected to the end of the corresponding second steel beam 2, and the two second flange plates 8 are detachably connected by multiple first bolts 9.

[0029] In the present technical solution, the detachable connection arrangement through the first bolt 9 has the advantages of simple structure and convenient installation and disassembly.

[0030] In another technical solution, a plurality of first bolts 9 are symmetrically arranged on both sides of the second flange plate 8 .

[0031] In the present technical solution, the first bolts 9 are symmetrically arranged on both sides of the second flange plate 8, which can ensure the stability of the connection between the two second steel beams 2 when the steel beams are in the extended state.

[0032] In another technical solution, the first connecting device further includes a plurality of second bolts 10 , which are disposed close to the inner side of the first steel beam 1 and are used to detachably connect the two first flanges located on the inner side of the first steel beam 1 .

[0033] In the present technical solution, a second bolt 10 is arranged on the inner side of the first flange to improve the stability of the connection between the two first steel beams 1 when the steel beams are in the extended state. When the bridge erection machine needs to pass through the hole, the second bolt 10 needs to be removed.

[0034] In another technical solution, a limiting device is also included, which is arranged at one end of the first steel beam 1 away from the first flange plate 6. The limiting device includes a limiting rod, which is a U-shaped structure. One free end of the limiting rod is hinged to the end of one of the first steel beams 1, and a limiting groove is provided at the end of the other first steel beam 1. The other free end of the limiting rod is clamped in the limiting groove.

[0035] In the present technical solution, the limiting device is used to connect two adjacent steel beam sections into one when the steel beam is in a folded state, so as to avoid separation of the steel beam sections due to external force during through-hole transportation, causing transportation inconvenience; the limiting device adopts a snap-on setting, which can quickly connect or separate two adjacent beam sections without affecting construction efficiency.

[0036] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A foldable steel beam for transverse movement of a bridge erecting machine, characterized in that: It comprises a plurality of continuously arranged steel beam sections, wherein any steel beam section comprises a first steel beam and a second steel beam arranged in parallel with each other, the first steel beam and the second steel beam are connected as a whole via a connecting beam, and the top surfaces of the first steel beam and the second steel beam are provided with tracks; Among them, two adjacent first steel beams are hinged by a first connecting device; and two adjacent second steel beams are detachably connected by a second connecting device.

2. The foldable steel beam for transverse movement of a bridge erecting machine according to claim 1, characterized in that: The first connecting device comprises: Two first flange plates, which are arranged between two adjacent first steel beams, and any first flange plate is fixedly connected to the end of the corresponding first steel beam; The hinge has two hinged parts respectively connected with the two first flange plates, and the hinge is arranged close to the outer side of the first steel beam.

3. The foldable steel beam for transverse movement of a bridge erecting machine as claimed in claim 2, characterized in that: The second connecting device includes two second flange plates, which are arranged between two adjacent second steel beams. Any second flange plate is fixedly connected to the end of the corresponding second steel beam, and the two second flange plates are detachably connected by a plurality of first bolts.

4. The foldable steel beam for transverse movement of a bridge erecting machine as claimed in claim 3, characterized in that: A plurality of first bolts are symmetrically arranged on both sides of the second flange plate.

5. The foldable steel beam for transverse movement of a bridge erecting machine as claimed in claim 2, characterized in that: The first connecting device also includes a plurality of second bolts, which are arranged close to the inner side of the first steel beam and are used to detachably connect the two first flanges located on the inner side of the first steel beam.

6. The foldable steel beam for transverse movement of a bridge erecting machine as claimed in claim 2, characterized in that: It also includes a limiting device, which is arranged at one end of the first steel beam away from the first flange plate. The limiting device includes a limiting rod, which is a U-shaped structure. One free end of the limiting rod is hinged to the end of one of the first steel beams, and a limiting groove is provided at the end of the other first steel beam. The other free end of the limiting rod is clamped in the limiting groove.

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