Steel bar truss floor support plate section steel hoisting and pulling device

Abstract

The utility model relates to the technical field of steel bar truss floor support plates, in particular to a steel bar truss floor support plate section steel hoisting and pulling device, which comprises an I-shaped steel secondary beam, an I-shaped steel primary beam and an outer frame steel beam, secondary beam supports are fixedly mounted on the bottom surfaces of two ends of the I-shaped steel secondary beam, and two ends of the I-shaped steel secondary beam are fixedly connected with the outer frame steel beam through the secondary beam supports. A plurality of steel bar lifting hooks are fixedly mounted on the bottom surface of the I-shaped steel secondary beam; main beam supports are fixedly installed on the bottom faces of the two ends of the I-shaped steel main beam, and the two ends of the I-shaped steel main beam 4 are fixedly connected with the outer frame steel beam through the main beam supports. According to the steel bar truss floor support plate profile steel hoisting and pulling device, the hoisting and pulling device is adopted for construction, during construction of an outer frame steel structure steel bar truss floor support plate, the hoisting and pulling device can be directly installed, the bottom does not need to be jacked back, the site safety production requirement is met, and the occupied construction site is reduced; after the structure construction is completed, the structure can be dismantled for secondary turnover use.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar truss floor decking plates, in particular to a steel bar truss floor decking plate section steel lifting and pulling device. Background Art

[0002] With the rapid development of high-rise and super-high-rise mixed structures, higher requirements are put forward for the construction period of the project, and the steel truss floor deck has been widely used. As a prefabricated component, the floor deck is a composite formwork that processes the steel bars in the floor slab into steel trusses in the factory, and welds the steel trusses and galvanized corrugated steel plates into one. Different from the previous construction methods, at the construction site, the steel truss template can be directly laid on the steel beam and welded and fixed, and then simple steel works can be carried out to pour concrete. During use, there is no need to support wooden formwork and scaffolding. The galvanized corrugated steel plate at the bottom is used as a template, and does not replace the stressed steel bars. Therefore, fire-proof spraying and anti-corrosion maintenance are not considered. Its construction is fast, and the steel bars are evenly arranged. The spacing between the upper and lower layers of steel bars and the thickness of the concrete protective layer can be fully guaranteed, creating favorable conditions for improving the quality of formwork construction. After pouring concrete to form the floor slab, it has many advantages such as large overall stiffness of cast-in-place slabs, good seismic performance, good impact performance, and good waterproof performance.

[0003] In super high-rise buildings, this type of structure is mainly used in the form of core tube shear wall + outer frame steel structure. Most super high-rise buildings are used for research and development offices. Influenced by the building facade and usage functions, in order to meet the building functions and owner requirements, there are often some overhead floors in the structure to meet the requirements of the building space appearance. During the construction of the super-high and over-limited area on the top of this type of overhead floor, due to the narrow range of the steel truss floor deck required to return to the top, it is difficult to meet the height-to-width ratio requirements by setting up the frame for returning to the top, which affects the further construction of the structure.

[0004] At present, the traditional construction method for steel truss floor decking in super-high and super-limited areas is to set up a disc-type steel pipe scaffolding at the bottom for top construction. This method results in a significant increase in construction time and cost. Utility Model Content

[0005] The utility model aims to provide a steel truss floor deck steel lifting and pulling device to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A steel truss floor deck steel lifting device comprises an I-beam secondary beam, an I-beam main beam and an outer frame steel beam, the bottom surfaces of both ends of the I-beam secondary beam are fixedly installed with secondary beam supports, the two ends of the I-beam secondary beam are fixedly connected to the outer frame steel beam through the secondary beam supports, and the bottom surface of the I-beam secondary beam is fixedly installed with a plurality of steel bar hooks;

[0008] Main beam supports are fixedly installed on the bottom surfaces of both ends of the I-beam main beam, and both ends of the I-beam main beam 4 are fixedly connected to the outer frame steel beam through the main beam supports.

[0009] Preferably, the I-beam secondary beam and the I-beam main beam are made of short No. 18 I-beam with a cross-section of Q235. The height of the secondary beam support is 450mm. The height of the main beam support matches the placement height of the secondary beam support. The cutting length of the I-beam secondary beam and the I-beam main beam is 30mm extending beyond the supports at both ends.

[0010] Preferably, the I-beam secondary beam, the I-beam main beam and the outer frame steel beam are welded by manual arc welding, the welding rod model is E43, the weld leg size of the main beam support is 6mm, the weld length is 30mm, the weld length of the secondary beam support is 70mm, and the I-beam secondary beam is erected above the I-beam main beam.

[0011] Preferably, the steel bar hook uses HRB400 grade threaded steel bar with a diameter of 8mm, the spacing between each two steel bar hooks is 250mm, the lower end of the steel bar hook is bent 180°, and the upper end of the steel bar hook is welded to the flange of the I-beam secondary beam using a double-sided foot weld, the weld foot size is 5mm, and the welding length is 50mm.

[0012] Compared with the prior art, the utility model provides a steel truss floor deck steel lifting device, which has the following beneficial effects:

[0013] The steel truss floor deck steel lifting and pulling device is constructed using a lifting and pulling device. The lifting and pulling device can be directly installed during the construction of the outer frame steel structure steel truss floor deck, and there is no need to return the bottom to the top, which meets the on-site safety production needs and reduces the occupation of the construction site. After the structural construction is completed, it can be dismantled for secondary turnover. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of the first embodiment of the utility model;

[0015] Figure 2 for Figure 1 Side view at mid-AA;

[0016] Figure 3 for Figure 1 Side view at the middle BB;

[0017] Figure 4 for Figure 1 The structural diagram of 1-1 in the figure;

[0018] Figure 5 for Figure 1 The structural diagram of 2-2 in the figure;

[0019] Figure 6 for Figure 1The structural diagram of 3-3 in the figure;

[0020] Figure 7 This is a structural schematic diagram of the second embodiment of the utility model;

[0021] Figure 8 for Figure 7 Lateral view at mid-CC;

[0022] Fig. 9 for Figure 7 Side view at mid DD.

[0023] In the figure: 1. I-beam secondary beam; 2. Secondary beam support; 3. Steel bar hook; 4. I-beam main beam; 5. Main beam support; 6. Outer frame steel beam. DETAILED DESCRIPTION Embodiment 1:

[0024] See also Figure 1-6 A steel truss floor deck steel lifting device comprises an I-beam secondary beam 1, an I-beam main beam 4 and an outer frame steel beam 6, the bottom surfaces of both ends of the I-beam secondary beam 1 are fixedly installed with secondary beam supports 2, the two ends of the I-beam secondary beam 1 are fixedly connected to the outer frame steel beam 6 through the secondary beam supports 2, and the bottom surface of the I-beam secondary beam 1 is fixedly installed with a plurality of steel bar hooks 3;

[0025] Main beam supports 5 are fixedly installed on the bottom surfaces of both ends of the I-beam main beam 4 , and both ends of the I-beam main beam 4 are fixedly connected to the outer frame steel beam 6 through the main beam supports 5 .

[0026] Furthermore, the I-beam secondary beam 1 and the I-beam main beam 4 are both made of short No. 18 I-beams with a cross-section of Q235. The height of the secondary beam support 2 is 450 mm, and the height of the main beam support 5 matches the placement height of the secondary beam support 2. The cutting length of the I-beam secondary beam 1 and the I-beam main beam 4 is 30 mm each extending beyond the supports at both ends.

[0027] Furthermore, the I-beam secondary beam 1 and the I-beam main beam 4 are welded to the outer frame steel beam 6 by manual arc welding. The welding rod model is E43. The weld leg size of the main beam support 5 is 6mm, the weld length is 30mm, the weld length of the secondary beam support 2 is 70mm, and the I-beam secondary beam 1 is erected above the I-beam main beam 4.

[0028] Furthermore, the steel hook 3 uses HRB400 grade threaded steel bars with a diameter of 8 mm, the spacing between each two steel hooks 3 is 250 mm, the lower end of the steel hook 3 is bent 180°, and the upper end of the steel hook 3 is welded to the flange of the I-beam secondary beam 1 using a double-sided foot weld, the weld foot size is 5 mm, and the welding length is 50 mm.

[0029] Use 6000mm-12000mm lifting device,

[0030] First, after the outer frame steel beam 6 and the steel truss floor deck are laid, a tower crane is used to lift the steel hook 3, the main beam support 5 and the secondary beam support 2 to the installation position. This type of short material is hoisted by a hopper; the main and secondary beam supports are welded to the outer frame steel beam 6. After the support welding is completed, the tower crane is used to lift the I-beam main beam 4 and the I-beam secondary beam 1. The I-beam secondary beam 1 is arranged above the I-beam 4 main beam. Before welding, the hook at the bottom of the steel hook 3 is connected to the main reinforcement at the upper end of the floor deck so that the floor deck has a certain pre-arch upward, and then the upper end of the steel hook 3 is connected to the web of the I-beam secondary beam 1 by a double-sided foot weld to complete the installation of the lifting device. After the installation of the lifting device is completed, concrete pouring construction can be carried out. After the floor strength meets the demolition conditions, the lifting device can be recovered or recycled. Embodiment 2:

[0031] Use a lifting device less than 6000mm.

[0032] See also Figure 7-9 The lifting device includes an I-beam secondary beam 1 and an outer frame steel beam 6.

[0033] The I-beam main beam 4 and the outer frame steel beam 6, the bottom surfaces of both ends of the I-beam secondary beam 1 are fixedly installed with secondary beam supports 2, the two ends of the I-beam secondary beam 1 are fixedly connected to the outer frame steel beam 6 through the secondary beam supports 2, and the bottom surface of the I-beam secondary beam 1 is fixedly installed with multiple steel bar hooks 3.

[0034] When in use, first, after the outer frame steel beam 6 and the steel truss floor deck are laid, a tower crane is used to lift the steel hook 3 and the secondary beam support 2 to the installation position, and this type of short material is hoisted by a hopper; the secondary beam support 2 is welded to the outer frame steel beam 6, and before welding, the bent hook at the bottom end of the steel hook 3 is connected to the main reinforcement at the upper end of the floor deck so that the floor deck has a certain pre-arch upward, and then the upper end of the steel hook 3 is connected to the web of the I-beam secondary beam 1 by a double-sided foot weld to complete the installation of the lifting device. After the installation of the lifting device is completed, concrete pouring construction can be carried out. After the strength of the floor slab meets the demolition conditions, the lifting device can be recovered or recycled.

[0035] Working principle: The steel truss floor deck steel lifting and pulling device has main and secondary beam supports welded to the outer frame steel beam 6. After the support welding is completed, the I-beam main beam 4 and the I-beam secondary beam 1 are lifted by a tower crane. The I-beam secondary beam 1 is arranged above the I-beam 4 main beam. Before welding, the hook at the bottom of the steel hook 3 is connected to the main reinforcement at the upper end of the floor deck so that the floor deck has a certain pre-arch upward. Then, the upper end of the steel hook 3 is connected to the web of the I-beam secondary beam 1 by a double-sided foot weld to complete the installation of the lifting and pulling device. After the installation of the lifting and pulling device is completed, concrete pouring construction can be carried out. After the floor slab strength meets the removal conditions, the lifting and pulling device can be recycled or used in a turnover manner.

[0036] Compared with the existing technology, the device adopts the traditional construction method of using disc-type steel pipe scaffolding for top-back construction;

[0037] If the height of the overhead layer is too high, the top return frame cannot meet the height-to-width ratio requirements of the frame, and no fixing measures can be provided around it, making it difficult to meet the needs of on-site safe production;

[0038] If the construction site is small and the corporate lobby on the first floor of the tower is used as a material or construction road site, if the disc-type steel pipe scaffolding is used for the top-return construction, the top-return area will occupy the construction road, which cannot meet the road and construction needs at the same time, and will reduce the efficiency of the construction site.

[0039] The device is constructed using a lifting device. During the construction of the outer frame steel structure reinforced truss floor decking, the lifting device can be directly installed without the need to return the bottom to the top, thus meeting the on-site safety production needs and reducing the occupation of the construction site. After the structural construction is completed, it can be dismantled for secondary turnover.

Claims

1. A steel truss floor deck steel lifting device, characterized in that: It comprises an I-beam secondary beam (1), an I-beam main beam (4) and an outer frame steel beam (6), wherein the bottom surfaces of both ends of the I-beam secondary beam (1) are fixedly mounted with secondary beam supports (2), the two ends of the I-beam secondary beam (1) are fixedly connected to the outer frame steel beam (6) via the secondary beam supports (2), and the bottom surface of the I-beam secondary beam (1) is fixedly mounted with a plurality of steel bar hooks (3); Main beam supports (5) are fixedly mounted on the bottom surfaces of both ends of the I-beam main beam (4), and both ends of the I-beam main beam (4) are fixedly connected to the outer frame steel beam (6) via the main beam supports (5).

2. A steel bar truss floor deck steel lifting device according to claim 1, characterized in that: The I-beam secondary beam (1) and the I-beam main beam (4) are both made of short No. 18 I-beams with a cross section and a material of Q235. The height of the secondary beam support (2) is 450 mm. The height of the main beam support (5) matches the placement height of the secondary beam support (2). The cutting length of the I-beam secondary beam (1) and the I-beam main beam (4) is 30 mm protruding from the supports at both ends.

3. The steel bar truss floor deck steel lifting device according to claim 1, characterized in that: The I-beam secondary beam (1) and the I-beam main beam (4) are welded to the outer frame steel beam (6) by manual arc welding, the welding rod model is E43, the weld leg size of the main beam support (5) is 6 mm, the weld length is 30 mm, the weld length of the secondary beam support (2) is 70 mm, and the I-beam secondary beam (1) is erected above the I-beam main beam (4).

4. The steel bar truss floor deck steel lifting device according to claim 1, characterized in that: The steel bar hook (3) is made of HRB400 grade threaded steel bar with a diameter of 8 mm. The spacing between each two steel bar hooks (3) is 250 mm. The lower end of the steel bar hook (3) is bent 180 degrees. The upper end of the steel bar hook (3) is welded to the flange of the I-beam secondary beam (1) by a double-sided foot weld. The weld foot size is 5 mm and the welding length is 50 mm.

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