Hoisting steel beam for removing airport pavement slab

Abstract

The utility model relates to the technical field of pavement repairing, and particularly discloses a hoisting steel beam for removing an airport pavement slab, which comprises a steel beam assembly, a cross beam and a sleeve, the sleeve is mounted on the cross beam through threads, the steel beam assembly comprises H-shaped steel, angle steel, reinforcing plates and a cantilever beam, the section of the H-shaped steel is H-shaped, and a plurality of reinforcing plates are welded on two sides of the H-shaped steel. Angle steel is welded to the outer side of the reinforcing plate, the section of the angle steel is in an L shape, a gap is formed between the H-shaped steel and the angle steel, expansion bolts can penetrate through the gap, the gap is used for installing the expansion bolts, cantilever beams are welded to the two ends of the H-shaped steel in the length direction, the lower end faces of the cantilever beams are higher than the lower end face of the H-shaped steel, and two connecting bases are arranged on the upper end face of the H-shaped steel. The cross beam is detachably installed in the connecting base and is perpendicular to the H-shaped steel, the outer circle face of the cross beam is provided with threads matched with internal threads of the sleeve, the flexibility of hole distribution of the pavement slab is improved, the steel beam assembly is connected into a whole through the sleeve, and the unreinforced concrete is effectively prevented from being broken during hoisting.

Description

Technical Field

[0001] This utility model relates to the field of pavement repair technology, specifically to a hoisting steel beam for removing airport pavement panels. Background Technology

[0002] Airport pavement slabs are generally made of reinforced or unreinforced concrete. To ensure the normal use of airport roads, damaged pavement slabs need to be repaired promptly. During repair, the damaged or cracked pavement slabs are cut. To reduce damage to the base layer and the length of airport maintenance, hoisting equipment is used to lift and transport the cut sections outside the airport for crushing. Existing hoisting steel beams only have a few holes and are in fixed positions. Due to the irregularity of the pavement slab damage or cracks, it is inconvenient or impossible to install expansion bolts. Furthermore, removing a pavement slab requires the use of multiple hoisting steel beams, which are independent of each other. This makes crane hoisting difficult to control. Unreinforced concrete is prone to breakage due to operational errors during dismantling and hoisting, leading to safety accidents and low dismantling efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a hoisting steel beam for removing airport runway panels, solving the problems of inconvenient hole layout and low removal efficiency in existing runway panels.

[0004] To solve the above problems, the technical solution adopted by this utility model is: a hoisting steel beam for removing airport runway panels, including a steel beam assembly, a crossbeam, and a sleeve. The crossbeam is installed on the steel beam assembly, and the sleeve is installed on the crossbeam by threads. The steel beam assembly includes H-beams, angle steel, reinforcing plates, and cantilever beams. The H-beams have an H-shaped cross-section, and several reinforcing plates are welded to both sides of the H-beams. Angle steel with an L-shaped cross-section is welded to the outside of the reinforcing plates. There is a gap between the H-beams and the angle steel, which can allow expansion bolts to pass through for installation. Cantilever beams are welded to both ends of the H-beams along their length. The lower end face of the cantilever beams is higher than the lower end face of the H-beams. Two connecting seats are provided on the upper end face of the H-beams. The crossbeams are cylindrical in shape and can be detachably installed in the connecting seats. The crossbeams are perpendicular to the H-beams, and the outer circular surface of the crossbeams is threaded to engage with the internal thread of the sleeve.

[0005] The beneficial effects of this solution are as follows: Compared to existing technologies, the gap between the H-beams and the angle steels on both sides of each steel beam assembly allows for adjustment of the bolt hole positions based on the crack condition of the pavement when installing expansion bolts. This reduces the number of fixed holes compared to existing methods, improving the flexibility and effectiveness of bolt hole placement on the pavement, making construction more convenient and thus increasing construction efficiency. The use of crossbeams and sleeves to connect multiple steel beam assemblies into a single unit prevents vertical shear forces during pavement dismantling and hoisting, preventing the unreinforced concrete pavement from breaking and ensuring safe removal. The dismantled pavement can be transported outside the airport for treatment, effectively reducing damage to the base layer and thus shortening the treatment time for the base layer, allowing for timely repair of new pavement panels and improving construction efficiency. The adjustable position of the sleeves on the crossbeams accommodates different distances between steel beams, further improving construction efficiency.

[0006] Furthermore, the angle steel is shorter than the H-beam, making it easier to tighten the nuts when connecting the steel beam assembly to the expansion bolts.

[0007] Furthermore, a lifting plate is welded to the upper end of the H-beam, and the lifting plate is provided with lifting holes for installing lifting straps. After the pavement panel is separated from the base layer, the steel beam is connected to the crane through the lifting plate to lift the pavement panel off.

[0008] Furthermore, the connecting seat includes a base and a pressure plate. The base and the pressure plate are respectively provided with semi-circular holes. The two semi-circular holes form a complete circular hole for installing the crossbeam. The pressure plate is connected to the base by bolts, which facilitates the assembly and disassembly of the crossbeam.

[0009] Furthermore, rubber is provided in the semi-circular holes of the base and pressure plate. When installing the crossbeam, the crossbeam is brought into contact with the rubber to avoid friction damage between the threads on the crossbeam and the inner wall of the base.

[0010] Furthermore, a connecting plate is provided between the cantilever beam and the H-beam, and stiffening plates are provided on both sides of the cantilever beam to improve the structural strength. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a left-side view of the present invention;

[0013] Figure 3 This is a schematic diagram of the crossbeam installation of this utility model;

[0014] Figure 4 This is a schematic diagram illustrating the use of this utility model;

[0015] In the diagram: 1-Steel beam assembly, 2-Crossbeam, 3-Sleeve, 4-Expansion bolt, 5-Jack, 6-Sling, 11-H-beam, 12-Angle steel, 13-Reinforcing plate, 14-Cantilever beam, 15-Hanging plate, 16-Base, 17-Pressure plate, 18-Gap, 19-Connecting plate, 20-Stiffening plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Implementation, for example, attached Figures 1 to 4 The image shows a hoisting steel beam for dismantling airport runway panels, comprising a steel beam assembly 1, a crossbeam 2, and a sleeve 3. The crossbeam 2 is mounted on the steel beam assembly 1, and the sleeve 3 is threaded onto the crossbeam 2. The steel beam assembly 1 includes H-beams 11, angle steel 12, reinforcing plates 13, and cantilever beams 14. The H-beams 11 have an H-shaped cross-section, with reinforcing plates 13 symmetrically welded to both sides. Angle steel 12 with an L-shaped cross-section is welded to the outer side of the reinforcing plates 13. There is a gap 18 between the H-beams 11 and the angle steel 12, which allows expansion bolts 4 to pass through for installation. The gap 18 between the H-beams 11 and the angle steel 12 is elongated, which improves the flexibility of the runway panel hole layout. Cantilever beams 14 are welded to both ends of the steel 11 along its length. The lower end of the cantilever beam 14 is higher than the lower end of the H-beam 11. Jacks 5 can be installed below the cantilever beam 14 to lift the pavement panel. Two connecting seats are provided on the upper end of the H-beam 11. The crossbeam 2 is cylindrical in shape and can be detachably installed in the connecting seats. The crossbeam 2 is perpendicular to the H-beam 11. The crossbeam 2 can connect multiple steel beam components 1 into one. The outer circular surface of the crossbeam 2 is threaded and engages with the internal thread of the sleeve 3. Its position on the crossbeam 2 can be adjusted by screwing the sleeve 3. The adjusting sleeve 3 is located at both ends of the connecting seats to fix the position of the crossbeam 2 and the steel beam components 1, which can prevent the unreinforced concrete pavement panel from breaking when hoisting it.

[0018] The angle steel 12 is shorter than the H-beam 11, making it easier to tighten the nuts when connecting the crossbeam 2 assembly to the expansion bolts 4. A hanging plate 15 is welded to the upper end of the H-beam 11, with lifting holes for connecting to the installation slings 6. After the pavement panel is separated from the base layer, the steel beam is connected to a crane via the hanging plate 15 to lift the pavement panel. The connecting seat includes a base 16 and a pressure plate 17, each with a semi-circular hole. The two semi-circular holes form a complete circular hole for installing the crossbeam 2. The pressure plate 17 is bolted to the base 16 for easy assembly and disassembly of the crossbeam 2. Rubber is installed inside the semi-circular holes of the base 16 and pressure plate 17. When installing the crossbeam 2, the crossbeam 2 contacts the rubber, preventing friction damage between the threads on the crossbeam 2 and the inner wall of the base 16. A connecting plate 19 is provided between the cantilever beam 14 and the H-beam, and stiffening plates 20 are provided on both sides of the cantilever beam 14 to improve structural strength.

[0019] The specific implementation process is as follows:

[0020] like Figure 4 As shown, during use, the perimeter of the pavement panel to be removed is cut. Holes are drilled in the pavement panel according to the extent of damage. Expansion bolts 4 are then fixed onto the pavement panel, with the protruding portion of the expansion bolts 4 passing through the gap 18 on the steel beam assembly 1. Nuts and washers are used to connect the steel beam assembly 1 to the expansion bolts 4. Only two steel beam assemblies 1 are shown in the attached diagram. The crossbeam 2 is installed in the mounting base 16 on the steel beam assembly 1. The sleeve 3 is tightened until it abuts against both ends of the mounting base 16. The pressure plate 17 is installed on the base 16 to press the crossbeam 2 firmly, after which the pavement panel can be lifted off. The crossbeam 2 connects the steel beam assembly 1 to... The crossbeams 2 are connected as a single unit, preventing vertical shear forces during pavement panel removal and effectively preventing breakage of the unreinforced concrete pavement panels during dismantling, thus avoiding safety accidents. Furthermore, the position of the sleeves 3 on the crossbeams 2 is adjustable to accommodate different distances between the steel beam components 1. Jacks 5 are installed at the bottom of the cantilever beams 14 at both ends of the steel beam components 1. The pavement panels are then lifted out of the ground using the jacks 5. The crane's slings 6 are installed on the lifting platform 15, and the pavement panels are lifted and transported outside the airport for processing. This lifting steel beam improves the flexibility and effectiveness of arranging bolt holes on the pavement panels, increasing dismantling efficiency and effectively preventing breakage. A hole-laying template can also be made from plywood according to the gaps 18 on the steel beam components 1. Using this template to drill holes in the pavement panels further improves construction efficiency.

[0021] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A hoisting steel beam for removing airport runway slabs, characterized in that: The system includes a steel beam assembly, a crossbeam, and a sleeve. The crossbeam is mounted on the steel beam assembly, and the sleeve is threaded onto the crossbeam. The steel beam assembly includes H-beams, angle steel, reinforcing plates, and cantilever beams. The H-beams have an H-shaped cross-section, and several reinforcing plates are welded to both sides of the H-beams. Angle steel with an L-shaped cross-section is welded to the outside of the reinforcing plates. There is a gap between the H-beams and the angle steel, which allows expansion bolts to pass through for installation. Cantilever beams are welded to both ends of the H-beams along their length. The lower end face of the cantilever beams is higher than the lower end face of the H-beams. Two connecting seats are provided on the upper end face of the H-beams. The crossbeams are cylindrical in shape and can be detachably installed in the connecting seats. The crossbeams are perpendicular to the H-beams, and the outer circular surface of the crossbeams is threaded to engage with the internal thread of the sleeve.

2. The hoisting steel beam for airport runway panel removal according to claim 1, characterized in that: The height of the angle steel is less than that of the H-beam.

3. The hoisting steel beam for airport runway panel removal according to claim 1, characterized in that: The upper end of the H-beam is welded with a lifting plate, and the lifting plate is provided with lifting holes.

4. The hoisting steel beam for airport runway panel removal according to claim 1, characterized in that: The connecting seat includes a base and a pressure plate. The base and the pressure plate are respectively provided with semi-circular holes. The two semi-circular holes form a complete circular hole for installing the crossbeam. The pressure plate is connected to the base by bolts.

5. The hoisting steel beam for airport runway panel removal according to claim 4, characterized in that: Rubber is installed inside the semi-circular holes of the base and pressure plate.

6. The hoisting steel beam for airport runway panel removal according to claim 1, characterized in that: A connecting plate is provided between the cantilever beam and the H-beam, and stiffening plates are provided on both sides of the cantilever beam.

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