CN218619871U - Lifting appliance for integrally lifting large-span box girder side mold - Google Patents

Abstract

The utility model relates to a sling used for overall hoisting of a large-span box girder side form. The sling consists of two groups, including two hoisting beams and two longitudinal beams, and a first intermediate beam is connected between the two hoisting beams. , the second intermediate beam is connected between the two longitudinal beams, the upper ends of the two longitudinal beams are connected with the longitudinal beam reinforcing plate, and the upper end side walls of the two longitudinal beams are connected to the left ends of the two lifting beams; The upper end surfaces of the hoisting beams are each connected to one lug seat, the lower left end surfaces of the two lug seats are connected to the upper end surfaces of the two longitudinal beams, and the two lug seats are respectively connected to the first stiffener. plate, the second stiffening plate and the third stiffening plate; the lower end surfaces of the two hoisting beams are respectively connected with a corner reinforcing plate; Each of the side-form hook plates is connected with a fourth stiffening plate. The utility model can realize the overall lifting of the large-span side form.

Description

A spreader for overall hoisting of the side formwork of a large-span box girder

technical field

The utility model relates to a sling used for overall hoisting of a large-span box girder side form.

Background technique

With the development of prefabricated construction, the production of prefabricated components has become the main work of viaduct production, and improving construction efficiency has also become the key.

In the construction of prefabricated box girders, the installation and removal efficiency of side forms directly affects the progress of box girder construction. Usually, the formwork installation and removal of the box girder adopts the following methods:

Overall sliding type: This method can conveniently realize the installation and disassembly of the formwork of the box girder, but it needs to preset the sliding track of the box girder formwork, which has problems such as large footprint, high construction cost, and small site applicability. Many production layouts are compact Prefab plants do not have the installation conditions.

Manually use wire ropes to bind the outer mold and lift it with a gantry crane. Or set a hook on the outside of the side form and then lift it with a gantry crane. This method is not only difficult to construct, but also time-consuming and labor-intensive. It may also lead to stress concentration at the lifting point and poor control of the lifting center of gravity, resulting in deformation of the formwork.

The use of simple slings for hoisting solves the problems of manually threading steel wire ropes and using side form hooks for hoisting, but each side form still needs to be removed, and each formwork needs a sling for hoisting.

Therefore, in view of the above problems, a sling for integral hoisting of the side form of a large-span box girder is proposed.

Utility model content

The purpose of the utility model is to overcome the existing defects and provide a spreader for integral hoisting of the large-span box girder side form, which can realize the integral hoisting of the long-span side form.

The technical solution for achieving the above purpose is: a hoisting device for the overall hoisting of the side form of a large-span box girder. The first intermediate beam, the second intermediate beam is connected between the two longitudinal beams, the upper ends of the two longitudinal beams are connected to the longitudinal beam reinforcing plate, and the upper end side walls of the two longitudinal beams are connected to the two lifting beams the left end of the left end; the upper end faces of the two lifting beams are respectively connected to a lug seat, the lower end faces of the left ends of the two lug seats are connected to the upper end faces of the two longitudinal beams, and the two lug seats are respectively Connect the first stiffening plate, the second stiffening plate and the third stiffening plate; each of the lower end surfaces of the two hoisting beams is connected with a corner reinforcing plate; the middle part of the right side wall of the two longitudinal beams is respectively connected with a side form bearing beam , each of the two sideform load beams is connected with a sideform hook plate, and each of the two sideform hook plates is connected with a fourth stiffening plate.

Preferably, the first stiffening plate and the second stiffening plate are multiple pieces, which are respectively connected to the side walls on the opposite sides of the two lug seats; the first stiffening plate and the second stiffening plate The lower end face of the first intermediate beam is connected to the upper end face of the first intermediate beam; the two third stiffening plates are connected to the left end side walls of the opposite faces of the two lug seats, and the lower end faces of the two third stiffening plates It is connected to the end surface of the longitudinal beam reinforcement plate.

Preferably, the upper end surface of the corner reinforcement plate is connected to the lower end surface of the hoisting beam, and the left end surface of the corner reinforcement plate is connected to the side wall of the longitudinal beam.

Preferably, the two sideform hooking plates are connected to the diverging surfaces of the two sideform load beams, and the left end of the sideform hooking plate is connected to the side wall of the longitudinal beam.

Preferably, the two fourth stiffening plates are connected to the side walls opposite to the two side form hook plates, and the lower ends of the two fourth stiffening plates are connected to the upper end of the side form load beam.

Preferably, there are multiple first intermediate beams.

Preferably, there are multiple second intermediate beams.

The beneficial effect of the utility model is that: by setting two groups of slings, connecting the first middle beam between the two hoisting beams, connecting the second middle beam between the two longitudinal beams, and connecting the upper ends of the two longitudinal beams with two Hoisting beams; each of the two hoisting beams is connected with a lug seat, and the middle part of the right side wall of the two longitudinal beams is connected with a side-form load-bearing beam, and each of the two side-form load-bearing beams is connected with a side-form hook plate. The tool can realize the overall lifting of the side formwork with a span of 32m. The side forms do not need to be dismantled into pieces. Reduce the number of installation and removal of side forms, reduce the deformation of side forms and speed up the efficiency of installation and removal of side forms.

Description of drawings

Fig. 1 is the front view of a hoisting device for integral hoisting of the side form of a large-span box girder of the present invention;

Fig. 2 is the front view of the utility model;

Fig. 3 is a left view of the utility model;

Fig. 4 is a detailed view of the corner reinforcing plate of the present invention;

Fig. 5 is a detailed view of the lug seat of the present invention.

In the figure: 1. Longitudinal beam; 2. Longitudinal beam reinforcement plate; 3. First intermediate beam; 9. Second intermediate beam; 4. Hoisting beam; 5. Corner reinforcement plate; 6. Lug seat; 7. Side formwork Hook plate; 8. Side form bearing beam; 10. First stiffening plate; 11. Second stiffening plate; 12. Third stiffening plate; 13. Fourth stiffening plate.

Detailed ways

The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

The utility model will be further described below in conjunction with accompanying drawing.

As shown in Figure 1-5, a spreader is used for integral hoisting of long-span box girder sideforms. There are two sets of spreaders. Two gantry cranes and double-machine cranes can be used to realize the overall lifting of sideforms with a span of 32m. This device All adopt 200#b channel steel, including two hoisting beams 4 and two longitudinal beams 1, the first middle beam 3 is connected between the two hoisting beams 4, and there are multiple first middle beams 3. The second intermediate beams 9 are connected between the two longitudinal beams 1, and there are multiple second intermediate beams 9. The upper ends of the two longitudinal beams 1 are connected to the longitudinal beam reinforcing plate 2, and the upper side walls of the two longitudinal beams 1 are connected to the left ends of the two hoisting beams 4; The lower end surface of the left end of the lug seat 6 is connected to the upper end surfaces of the two longitudinal beams 1, and the first stiffening plate 10, the second stiffening plate 11 and the third stiffening plate 12 are respectively connected to the two lug seats 6; the two hoisting beams 4 The lower end faces of the corner reinforcement plates 5 are respectively connected with a corner reinforcement plate 5, and the upper end surface of the corner reinforcement plate 5 is connected with the lower end surface of the hoisting beam 4, and the left end face of the corner reinforcement plate 5 is connected with the side wall of the longitudinal beam 1; the middle part of the right side wall of the two longitudinal beams 1 is connected One sideform load beam 8, two sideform load beams 8 are respectively connected with a sideform hook plate 7, and the two sideform hook plates 7 are respectively connected with a fourth stiffening plate 13. The two sideform hook plates 7 are connected to the facing away from the two sideform load beams 8 , and the left end of the sideform hook plate 7 is connected to the side wall of the longitudinal beam 1 . Two fourth stiffening plates 13 are connected to the opposite side walls of the two side form hook plates 7 , and the lower ends of the two fourth stiffening plates 13 are connected to the upper end surface of the side form bearing beam 8 . Both the first stiffening plate 10 and the second stiffening plate 11 are multiple pieces, which are respectively connected to the opposite side walls of the two lug seats 6; the lower end surfaces of the first stiffening plate 10 and the second stiffening plate 11 are connected to the first middle The upper end surface of the crossbeam 3; two third stiffening plates 12 are connected on the left end side walls of the opposite sides of the two lug seats 6, and the lower end surfaces of the two third stiffening plates 12 are connected on the upper end surface of the longitudinal beam reinforcement plate 2. The two longitudinal beams 1 and the hoisting beam 4 form an outer frame; the side formwork load beam 8 is connected with the longitudinal beam 1 to form a cross-sectional force system; the first middle beam 3 and the second middle beam 9 connect the frames on both sides to form a whole; The lug seat 6 is connected with the hoisting beam 4 for wire rope threading.

Specifically, when lifting, two sets of spreaders are respectively placed at both ends of the lifted side form, and the parts below the hoisting beam 4 in the spreader are placed in the side form, so that the side form hook plate 7 is hooked to the side form, Thread the steel wire rope on the hook of the crane on the lug seat 6, start the crane to lift the side form, and the overall lift of the side form with a span of 32m can be realized by this sling. The side forms do not need to be dismantled into pieces. Reduce the number of installation and removal of side forms, reduce the deformation of side forms and speed up the efficiency of installation and removal of side forms.

Working principle: when hoisting, two sets of spreaders are respectively placed at both ends of the side form being lifted, and the parts below the hoisting beam 4 in the spreader are placed in the side form, so that the side form hook plate 7 is hooked on the side form, Thread the steel wire rope on the hook of the crane on the lug seat 6, start the crane to lift the side form, and the overall lift of the side form with a span of 32m can be realized by this sling.

The above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be used for the foregoing The technical solutions recorded in each embodiment are modified, or some or all of the technical features are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the various embodiments of the present invention.

Claims (7)

1. The lifting appliance for integrally lifting the large-span box girder side forms is characterized by comprising two lifting cross beams (4) and two longitudinal beams (1), wherein a first middle cross beam (3) is connected between the two lifting cross beams (4), a second middle cross beam (9) is connected between the two longitudinal beams (1), the upper ends of the two longitudinal beams (1) are connected with longitudinal beam reinforcing plates (2), and the side walls of the upper ends of the two longitudinal beams (1) are connected with the left ends of the two lifting cross beams (4); the upper end faces of the two hoisting cross beams (4) are respectively connected with a lifting lug seat (6), the lower end faces of the left ends of the two lifting lug seats (6) are connected with the upper end faces of the two longitudinal beams (1), and the two lifting lug seats (6) are respectively connected with a first stiffening plate (10), a second stiffening plate (11) and a third stiffening plate (12); the lower end faces of the two hoisting cross beams (4) are respectively connected with a corner reinforcing plate (5); the middle parts of the right side walls of the two longitudinal beams (1) are respectively connected with a side die bearing beam (8), the two side die bearing beams (8) are respectively connected with a side die hook plate (7), and the two side die hook plates (7) are respectively connected with a fourth stiffening plate (13).

2. The large-span box girder side integral hoisting sling according to claim 1, wherein the first stiffening plate (10) and the second stiffening plate (11) are provided with a plurality of pieces and are respectively connected to the side walls of the two lifting lug seats (6) on the opposite surfaces; the lower end faces of the first stiffening plate (10) and the second stiffening plate (11) are connected to the upper end face of the first middle cross beam (3); the two third stiffening plates (12) are connected to the left side wall of the opposite surface of the lifting lug seat (6), and the lower end surfaces of the two third stiffening plates (12) are connected to the upper end surface of the longitudinal beam stiffening plate (2).

3. The large-span box girder side mold integral hoisting sling according to claim 1, wherein the upper end surface of the corner reinforcing plate (5) is connected with the lower end surface of the hoisting cross beam (4), and the left end surface of the corner reinforcing plate (5) is connected with the side wall of the longitudinal beam (1).

4. The lifting appliance for integrally lifting the side dies of the large-span box girder according to claim 1, wherein two side die hook plates (7) are connected to the deviating surfaces of two side die bearing beams (8), and the left ends of the side die hook plates (7) are connected to the side walls of the longitudinal girder (1).

5. The large-span box girder side integral hoisting sling according to claim 1, wherein two fourth stiffening plates (13) are connected to the side walls of the two side mould hook plates (7) on opposite sides, and the lower ends of the two fourth stiffening plates (13) are connected to the upper end faces of the side mould carrier beams (8).

6. The large-span box girder side mold integral hoisting sling according to claim 1, wherein the first intermediate cross beam (3) is provided with a plurality of cross beams.

7. The large-span box girder side mold integral hoisting sling according to claim 1, wherein the second intermediate cross beam (9) is provided with a plurality of beams.

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