CN111776937A - Prefabricated hoisting device and usage for hoisting I-beam and its combined modules - Google Patents

Abstract

The invention discloses an assembled hoisting device for hoisting an I-beam and its combined modules, which comprises an upper clamping plate, a lower clamping plate and two side supports, and the upper clamping plate is horizontally arranged on the upper surface of the upper flange plate of the I-beam , the lower splint is cross-armed on the lower surface of the lower flange plate of the I-beam, the two side supports are respectively embedded in the grooves on both sides of the I-beam web, and the side supports are provided with a top plate and a bottom plate, and the inner sides are flush , which is closely attached to the web of the I-beam, the top plate and the upper splint are connected by bolts I, and the bottom plate and the lower splint are connected by bolts II; lifting lugs are fixed on the upper splint. The invention also discloses a method of using the above-mentioned assembled hoisting device. The present invention can complete the hoisting of the I-beam and its combined modules stably and reliably by adopting a prefabricated hoisting device that can withstand sufficient tensile force and is surrounded by all sides, avoids the trouble caused by the direct welding of the lifting lugs on the I-beam, and is convenient for construction. Safety, can reduce labor costs and material costs, shorten the construction period.

Description

Prefabricated hoisting device and usage for hoisting I-beam and its combined modules

technical field

The invention relates to the technical field of hoisting of petrochemical and marine engineering I-beams and their combined modules, in particular to an assembled hoisting device and its usage.

Background technique

In the fields of petrochemical and marine engineering, the I-beams and their combined modules have large self-weight components and complex structures. The hoisting method is usually based on the distribution of the weight center of gravity of the combined modules and the number of hoisting equipment, and arrange a corresponding number of Lifting point, the type of lifting point is: Weld the lifting lug and its corresponding rib plate on the upper flange plate of the I-beam main beam structure, and add a web stiffener plate at the corresponding position of the lifting point. After the combined module is hoisted, the lifting lugs are cut off, polished flat, and then painted for surface anti-corrosion protection. In the above structure, the lifting lugs are directly welded on the upper flange plate of the I-beam, and they are discarded after one use, which not only wastes materials but also increases the workload of laying and welding the lifting points. In addition, the removal of the lifting lugs is generally carried out manually. The removal work can easily damage the integrity of the surface of the I-beam structure, and it is also easy to affect the progress of the work due to climatic factors such as strong wind, rain, and sunlight exposure. The inability to carry out the painting work due to the weather will cause the structural steel to rust, and the rust removal and painting work needs to be carried out again, which will adversely affect the construction period. In addition, the above-mentioned work requires multiple high-altitude operations, which are easily affected by the weather, which brings great difficulties to the construction and poses a hidden danger to the safety of the construction workers, which not only increases the working hours and materials, but also easily delays the construction period. In order to solve the above problems, it has become a major research topic that the industry needs to solve urgently, so that the construction personnel can complete the hoisting operation through quick and simple operations.

SUMMARY OF THE INVENTION

In order to solve the technical problems existing in the known technology, the present invention provides an assembled hoisting device for hoisting I-beams and their combined modules, which enables construction personnel to complete hoisting operations through quick and simple operations, and its usage.

A technical solution adopted by the present invention to solve the technical problems existing in the known technology is: an assembled hoisting device for hoisting I-beams and their combined modules, comprising lifting lugs, an upper splint, a The lower splint and two side supports, the upper splint is placed horizontally on the upper surface of the upper flange plate of the I-beam, the lower splint is cross-armed on the lower surface of the lower flange plate of the I-beam, and the two side supports They are respectively embedded in the slots on both sides of the web of the I-beam. The side supports are provided with a top plate and a bottom plate, and the inner side is flush and closely attached to the web of the I-beam. The top plate and the upper splint are connected by bolts. I connection, the bottom plate and the lower clamping plate are connected by bolts II; the lifting lug is fixed on the upper clamping plate.

A wing-shaped hooking plate is respectively provided at the front and rear ends of both sides of the upper splint, the wing-shaped hooking plate is fixedly connected to the lower part of the upper splint, the cross section is L-shaped, and is hooked to the top plate.

A handle is provided on the outside of the side support.

The main body of the side support adopts a square steel pipe structure.

Another technical solution adopted by the present invention to solve the technical problems existing in the known technology is: in the use method of the above-mentioned prefabricated hoisting device, first determine the number and position of the hoisting points, and then adopt the following steps to install a hoisting point on each hoisting point Set the lifting device:

1) Place the upper splint on the upper surface of the upper flange plate of the I-beam;

2) Embed the side supports in the grooves on both sides of the I-beam web, the inner side of the side supports is close to the I-beam web, the top plate is aligned with the screw holes of the upper splint, and bolts I are used to connect;

3) Place the lower splint on the lower surface of the lower flange plate of the I-beam, align the bottom plate with the screw holes of the lower splint, and use bolt II to connect;

4) Complete the hoisting of the I-beam and its combined modules after all hoisting points are installed with hoisting devices;

5) After the hoisting is completed, remove the bolts I and II to complete the removal of the hoisting device.

The advantages and positive effects of the present invention are: by adopting an assembled hoisting device that can withstand sufficient tensile force and is surrounded on all sides, the hoisting of the I-beam and its combined modules can be completed stably and reliably, avoiding the direct welding of the lifting lugs on the I-beam. The future troubles on the beam, the construction is convenient and safe, it can reduce the labor cost and material cost, and shorten the construction period.

Description of drawings

Fig. 1 is the elevation schematic diagram of the prefabricated hoisting device;

Fig. 2 is the dismantling schematic diagram of the assembled lifting device;

Figure 3 is a schematic cross-sectional view of an assembled lifting device;

Fig. 4 is the side view of Fig. 3;

FIG. 5 is a schematic structural diagram of a further improved assembled hoisting device.

In the figure: 1. I-beam; 2. Upper splint; 3. Lower splint; 4. Side support; 41, top plate; 42, bottom plate;

Detailed ways

In order to further understand the content of the invention, features and effects of the present invention, the following embodiments are exemplified and described in detail with the accompanying drawings as follows:

Please refer to FIGS. 1 to 4 , an assembled hoisting device for hoisting I-beams and their combined modules, including lifting lugs 5 , the device also includes an upper splint 2 , a lower splint 3 and two side supports 4 , the upper splint 2 is placed horizontally on the upper surface of the upper flange plate of the I-beam, the lower splint 3 is cross-armed on the lower surface of the lower flange plate of the I-beam 1, and the two side supports 4 are embedded respectively In the notches on both sides of the web of the I-beam 1, the side support 4 is provided with a top plate 41 and a bottom plate 42, and the inner side surfaces are flush with the web of the I-beam 1, the top plate 41 and the upper The clamping plate 2 is connected by bolts I, the bottom plate 42 and the lower clamping plate 3 are connected by bolts II; the lifting lugs 5 are fixed on the upper clamping plate 2 .

Please refer to FIG. 5 . FIG. 5 shows the improved structure of the above lifting device. A wing-shaped hooking plate 7 is respectively provided at the front and rear ends of both sides of the upper clamp plate 2 , and the wing-shaped hooking plate 7 is fixed on the The lower part of the upper splint 2 is of a sinking type, with an L-shaped cross section, and is hooked to the top plate, which can enhance the hoisting ability of the hoisting device.

In this embodiment, a handle 6 is provided on the outer side of the side support 4 to facilitate the disassembly and installation of the hoisting device. In this embodiment, the main body of the side support 4 adopts a square steel pipe structure, and the square steel pipe structure can be made of profiles or welded steel plates. The square steel tube structure is adopted to facilitate the side support 4 to fit with the web of the I-beam 1 .

How to use the above assembled lifting device:

First determine the number and location of lifting points, and then install a set of lifting devices on each lifting point using the following steps:

1) Lay the upper splint 2 horizontally on the upper surface of the upper flange plate of the I-beam 1.

2) Embed the side supports 4 in the notches on both sides of the web of the I-beam, the inner side of the side supports 4 is close to the web of the I-beam, the top plate 41 is aligned with the screw holes of the upper splint 4, and bolts I are used to connect.

3) the lower splint 3 is cross-armed on the lower surface of the lower flange plate of the I-beam, the bottom plate 42 is aligned with the screw holes of the lower splint 3, and bolts II are used to connect;

4) Complete the hoisting of the I-beam and its combined modules after all hoisting points are installed with hoisting devices;

5) After the hoisting is completed, remove the bolts I and II to complete the removal of the hoisting device.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments. Under the inspiration of the present invention, personnel can also make many forms without departing from the scope of the present invention and the protection scope of the claims, which all belong to the protection scope of the present invention.

Claims (5)

1. an assembled hoisting device for the hoisting of I-beam and its combined module, comprising lifting lugs, is characterized in that, this device also comprises an upper splint, a lower splint and two side supports, and the upper splint is horizontally supported. It is placed on the upper surface of the upper flange plate of the I-beam, the lower splint is cross-armed on the lower surface of the lower flange plate of the I-beam, and the two side supports are respectively embedded in the grooves on both sides of the I-beam web. In the mouth, the side support is provided with a top plate and a bottom plate, and the inner side is flush with the I-beam web, the top plate and the upper clamping plate are connected by bolts I, and the bottom plate and the lower clamping plate are connected by bolts. II connection; the lifting lug is fixed on the upper splint. 2. The prefabricated hoisting device for hoisting I-beams and their combined modules according to claim 1, characterized in that, a wing-shaped hooking plate is respectively provided on the front and rear ends of both sides of the upper splint, so The wing-shaped hooking plate is fixedly connected to the lower part of the upper clamping plate, the cross section is L-shaped, and is hooked to the top plate. 3. The assembled hoisting device for hoisting I-beams and their combined modules according to claim 1 or 2, characterized in that a handle is provided on the outer side of the side support. 4. The assembled hoisting device for hoisting I-beams and their combined modules according to claim 1, wherein the main body of the side support adopts a square steel pipe structure. 5. a use method of the assembled lifting device as claimed in claim 1, is characterized in that, first determine the number and position of lifting points, then adopt the following steps to install a set of lifting devices on each lifting point: 1) Place the upper splint on the upper surface of the upper flange plate of the I-beam; 2) Embed the side supports in the grooves on both sides of the I-beam web, the inner side of the side supports is close to the I-beam web, the top plate is aligned with the screw holes of the upper splint, and bolts I are used to connect; 3) Place the lower splint on the lower surface of the lower flange plate of the I-beam, align the bottom plate with the screw holes of the lower splint, and use bolt II to connect; 4) Complete the hoisting of the I-beam and its combined modules after all hoisting points are installed with hoisting devices; 5) After the hoisting is completed, remove the bolts I and II to complete the removal of the hoisting device.

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