F crane for disassembling and assembling prefabricated outer mold of box girder

Abstract

The utility model discloses a box girder prefabricated outer mould dismounting F-shaped hoist which comprises two F-shaped hoisting units, the two F-shaped hoisting units are fixedly connected through channel steel, a supporting notch is fixedly formed in the inner side of each F-shaped hoisting unit, a supporting rod is erected on each supporting notch, a hoisting ring used for being connected with a hoisting hook of a hoist is arranged at the top of each F-shaped hoisting unit, and the hoisting ring is connected with the hoisting hook of the hoist. A limiting cross rod is fixedly arranged at the bottom of the outer side of each F-shaped hoisting unit, and the length of each limiting cross rod is larger than the distance between the two F-shaped hoisting units; according to the utility model, by arranging the supporting rods and the limiting cross rods, before the box girder prefabricated outer mold is hoisted, the supporting rods penetrate into the supporting notches, so that the supporting rods are supported below the box girder prefabricated outer mold, and the limiting cross rods abut against the outer side of a vertical steel beam of the box girder prefabricated outer mold, so that a plurality of sections of templates can be hoisted integrally; and the stability of the box girder prefabricated outer mold in the hoisting process can be guaranteed, frequent splitting and splicing of the box girder prefabricated outer mold are avoided, and the construction efficiency and the construction quality are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge maintenance and repair, and particularly relates to an F-type crane for disassembling and assembling the precast external formwork of a box girder. Background Technique

[0002] In the current bridge maintenance and repair project, in the construction environment where the gantry crane is not equipped due to the small project scale, when using a tower crane or other hoisting equipment to hoist the precast external formwork of a box girder, in order to ensure the stability of hoisting, the formwork needs to be disassembled into small sections for frequent assembly during the disassembly and assembly construction of the precast external formwork of the box girder. The construction efficiency is slow, and the formwork joints need to be frequently processed, which is easy to form stepped joints. Content of the Utility Model

[0003] The purpose of the utility model is to provide an F-type crane for disassembling and assembling the precast external formwork of a box girder to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an F-type crane for disassembling and assembling the precast external formwork of a box girder, including two F-shaped hoisting units, which are fixedly connected by channel steel between the two F-shaped hoisting units. A support notch is fixedly arranged inside the F-shaped hoisting unit, a support rod is erected on the support notch, a lifting ring for connecting with the hook of a crane is arranged at the top of the F-shaped hoisting unit, a limiting cross bar is fixedly arranged at the bottom outside the F-shaped hoisting unit, and the length of the limiting cross bar is greater than the distance between the two F-shaped hoisting units.

[0005] Further, a limiting plate is fixedly arranged on one side surface of the support rod close to the outside of the F-shaped hoisting unit. By reasonably setting the position of the limiting plate on the support rod, when the support rod horizontally penetrates a certain length from the support notch, the limiting plate abuts against the side wall of the F-shaped hoisting unit to limit the support rod, so that the vertical middle plane of the support rod coincides with the vertical middle plane of the whole F-type crane. Through holes are arranged on the limiting plate, bolts are penetrated through the through holes, and the support rod is fixedly connected to the F-shaped hoisting unit through the bolts.

[0006] By setting the limiting plate, the vertical middle plane of the support rod coincides with the vertical middle plane of the whole F-type crane, ensuring the balance of the F-type crane itself. The support rod is fixed on the F-shaped hoisting unit through bolts, improving the safety of the device.

[0007] Further, a diagonal brace is arranged at the top corner of the F-shaped hoisting unit.

[0008] Setting the diagonal brace improves the strength of the F-shaped hoisting unit.

[0009] Further, multiple lifting rings are provided.

[0010] By providing multiple lifting rings and connecting the multiple lifting rings with the hook of the crane through ropes, the balance of the device during hoisting is improved.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model is provided with support rods on two F-shaped lifting units, and a limiting cross bar is arranged on the outer side of the lower part of the F-shaped lifting unit. Before lifting the precast external formwork of the box girder, the support rods are inserted into the support notch, so that the support rods support under the precast external formwork of the box girder, and the limiting cross bar abuts against the outer side of the vertical steel beam of the precast external formwork of the box girder, so that the multi-section formwork can be integrally lifted. Moreover, through the transverse support of the support rods, the stability of the precast external formwork of the box girder during the lifting process is ensured, the frequent disassembly and splicing of the precast external formwork of the box girder are avoided, and the construction efficiency and construction quality are improved. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the connection structure between the F-lifting for disassembling and assembling the precast external formwork of the box girder and the precast external formwork of the box girder provided by the embodiment of the utility model;

[0014] Figure 2 is a schematic diagram of the overall structure of the F-lifting for disassembling and assembling the precast external formwork of the box girder provided by the embodiment of the utility model;

[0015] Figure 3 is a schematic diagram of the support rod structure provided by the embodiment of the utility model;

[0016] In the figure, 1-F-shaped lifting unit, 2-support rod, 3-limiting cross bar, 4-channel steel, 5-precast external formwork of box girder, 11-support notch, 12-lifting ring, 13-inclined support rod, 21-limiting plate, 22-through hole, 51-vertical steel beam. Detailed Embodiment

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-3 , the present utility model provides a technical solution: an F-lifting for disassembling and assembling the precast external formwork of the box girder, including two F-shaped lifting units 1, which are fixedly connected by channel steel 4 between the two F-shaped lifting units 1, and a support notch 11 is fixedly arranged inside the F-shaped lifting unit 1;

[0019] A support rod 2 is installed on the support notch 11. A limit plate 21 is fixedly arranged on one side surface of the support rod 2 close to the outside of the F-shaped lifting unit 1. In the specific implementation process, by measuring the distance between two F-shaped lifting units 1 and the length of the support rod 2, the position of the limit plate 21 on the support rod 2 is reasonably set. After the support rod 2 is installed, the vertical middle plane of the support rod 2 coincides with the vertical middle plane of the whole F-shaped lifting unit, so as to ensure the balance of the F-shaped lifting unit itself. A through hole 22 is arranged on the limit plate 21, a bolt is inserted through the through hole 22, and the support rod 2 is fixedly connected to the F-shaped lifting unit 1 through the bolt.

[0020] At the top corner of the F-shaped lifting unit 1, an inclined support rod 13 is arranged. The inclined support rod 13 can improve the strength of the F-shaped lifting unit 1. At the top of the F-shaped lifting unit 1, a plurality of evenly distributed lifting rings 12 for connecting with the crane hook are arranged. At the bottom outside of the F-shaped lifting unit 1, a limit cross bar 3 is fixedly arranged, and the length of the limit cross bar 3 is greater than the distance between two F-shaped lifting units 1.

[0021] In the specific implementation process, when the overall lifting of the box girder precast external mold 5 is required, the lifting rings 12 are connected to the crane hook through ropes, and the F-shaped lifting unit 1 is lifted to the middle of the two vertical rigid beams 51 of the box girder precast external mold 5. Then, the support rod 2 is inserted into the inner side of the vertical rigid beam 51, and the support rod 2 is installed on the support notch 11. The support rod 2 is fixedly connected to the F-shaped lifting unit 1 through the bolt on the limit plate 21. At this time, the support rod 2 abuts against the lower part of the box girder precast external mold 5, and the limit cross bar 3 abuts against the outer side of the vertical steel beam 51, so as to fix the F-shaped lifting unit to the box girder precast external mold 5. After fixation, the overall lifting of the box girder precast external mold 5 can be carried out.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A box girder prefabricated outer formwork disassembly and assembly F crane, characterized in that: It comprises two F-shaped lifting units, which are fixedly connected by channel steel, a supporting slot is fixedly provided on the inner side of the F-shaped lifting unit, a supporting rod is mounted on the supporting slot, a lifting ring for connecting with a crane hook is provided on the top of the F-shaped lifting unit, a limiting cross bar is fixedly provided on the outer bottom of the F-shaped lifting unit, and the length of the limiting cross bar is greater than the distance between the two F-shaped lifting units.

2. The box girder prefabrication outer formwork disassembly and assembly F crane according to claim 1 is characterized in that: A limit plate is fixedly arranged on one side surface of the support rod close to the outer side of the F-shaped lifting unit, and a through hole is arranged on the limit plate. Bolts are passed through the through hole, and the support rod is fixedly connected to the F-shaped lifting unit through the bolts.

3. The box girder prefabrication outer formwork disassembly and assembly F crane according to claim 1 is characterized in that: A diagonal brace is provided at the top corner of the F-shaped lifting unit.

4. The box girder prefabrication outer formwork disassembly and assembly F crane according to claim 1 is characterized in that: The hanging ring is provided in plurality.

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