CN212503642U

CN212503642U - Portable hoisting device for prefabricated slab

Info

Publication number: CN212503642U
Application number: CN202020641125.3U
Authority: CN
Inventors: 梁全雷; 张延欣; 丘志东; 张龙; 杨通智
Original assignee: China Construction Fourth Engineering Division Corp Ltd; China Construction Fourth Engineering Division South China Construction Co Ltd
Current assignee: China Construction Fourth Engineering Division Corp Ltd; China Construction Fourth Engineering Division South China Construction Co Ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-02-09
Anticipated expiration: 2030-04-24

Abstract

The utility model discloses a portable hoist device for assembled prefabricated plate, including pre-buried a set of nut (2) in prefabricated plate (1) in advance, nut (2) and bolt (4) threaded connection who has rings (3). The utility model discloses well rings that are used for hoist and mount prefabricated plate adopt movable rings, when carrying out the prefabricated plate transportation, because there is not the restraint of rings, the prefabricated plate can level and smooth stack together, has not only saved the transportation space, and it is damaged to have also reduced the prefabricated plate that the transportation caused. During hoisting, rapid hoisting can be realized only by putting the screw rod at the lower end of the hoisting ring into the nut embedded in the prefabricated slab, and the bolt with the hoisting ring can be directly screwed out, detached and recycled after hoisting is finished; the trouble that the hoisting ring needs to be cut off in the later stage in the prior art is avoided, and the material waste is also avoided. The utility model discloses loading and unloading are simple, quick, convenient, but wide application in the middle of the hoist and mount construction.

Description

Portable hoisting device for prefabricated slab

Technical Field

The utility model relates to a portable hoist device for assembled prefabricated plate belongs to lifting device technical field.

Background

In the existing building construction, most of components such as concrete precast slabs and the like need to be hoisted and transported through hoisting machinery, and the installation requirement is high and the hoisting difficulty is high; the damage rate of the components is also high during the transportation process. The big reason is that: in order to meet the hoisting requirements, steel bar hoisting rings are embedded in the members in advance, and the hoisting rings have large extrusion and abrasion on the concrete members in the transportation process and occupy transportation space; after the hoisting installation is completed, the cutting-off hanging rings are directly used as waste materials while the labor cost is still needed to cut off the hanging rings, and the material cost is correspondingly increased. The construction is very inconvenient, meanwhile, the operation of cutting off the hanging ring easily influences the strength, stress and the like of the prefabricated part, and the concrete part is easy to crack or the part is damaged due to repeated operation. Therefore, the prior art is in need of further improvement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a portable hoist device for assembled prefabricated plate to reduce the breakage rate in the prefabricated plate transportation, hoist and mount convenient and fast, improvement hoist and mount efficiency that can be very big practices thrift the cost, thereby solves the not enough of prior art existence.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses a portable hoist device for assembled prefabricated plate, including the prefabricated plate, pre-buried in the prefabricated plate has a set of nut, nut and the bolt threaded connection who has rings.

In the portable hoisting device for the prefabricated slab, the group of nuts comprises three nuts with the same specification, and the three nuts are distributed in a triangular manner and are embedded in the prefabricated slab vertically to the top surface of the prefabricated slab.

In the portable hoisting device for the prefabricated plate, the top end of the nut is flush with or slightly lower than the top surface of the prefabricated plate.

In the portable hoisting device for the prefabricated slab, the hoisting ring is welded with the top end of the bolt or the top of the long screw rod is directly bent to form the hoisting ring.

In the portable hoisting device for the prefabricated plate, the specification of the bolt is not less than M15, and the bolt adopts standard coarse threads; the length of the thread section of the bolt is not less than 100 mm.

In the portable hoisting device for the prefabricated plate, the specification of the nut is matched with that of the bolt, and the outer wall of the nut is provided with the ring groove.

Since the technical scheme is used, the utility model discloses compare with prior art, the utility model discloses a rings that are used for hoist and mount prefabricated plate adopt movable rings, when carrying out the prefabricated plate transportation, owing to do not have the restraint of rings, the prefabricated plate can level and smooth stack together, has not only saved the transportation space, has also reduced the prefabricated plate damage that the transportation caused. During hoisting, rapid hoisting can be realized only by putting the screw rod at the lower end of the hoisting ring into the nut embedded in the prefabricated slab, and the bolt with the hoisting ring can be directly screwed out, detached and recycled after hoisting is finished; the trouble that the hoisting ring needs to be cut off in the later stage in the prior art is avoided, and the material waste is also avoided. The utility model discloses loading and unloading are simple, quick, convenient, but wide application in the middle of the hoist and mount construction.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The labels in the figures are: 1-precast slab, 2-nut, 3-lifting ring, 4-bolt, 5-ring groove and 6-sling.

The present invention will be described in detail with reference to the accompanying drawings

The utility model discloses a portable hoist device for assembled prefabricated plate, as shown in fig. 1, the device includes prefabricated plate 1, and pre-buried in prefabricated plate 1 has a set of nut 2,

nut

2 and 4 threaded connection of bolt that have rings 3. The group of nuts 2 comprises three nuts with the same specification, and the three nuts 2 are distributed in a triangular manner and are embedded in the prefabricated slab 1 vertically to the top surface of the prefabricated slab 1. The top end of the nut 2 is flush with or slightly lower than the top surface of the prefabricated plate 1. The lifting ring 3 is welded with the top end of the bolt 4 or the top of the long screw rod is directly bent to form the lifting ring 3. The specification of the bolt 4 is not less than M15, and the bolt 4 adopts standard coarse threads; the length of the thread section of the bolt 4 is not less than 100 mm. The specification of the nut 2 is matched with that of the bolt 4, and the outer wall of the nut 2 is provided with a ring groove 5.

Detailed Description

The bolt is mainly composed of a nut 2 and a bolt 4 matched with the nut 2, and a hanging ring 3 is arranged on the top of the bolt 4, as shown in figure 1. In order to improve the tensile strength between the nut 2 and the bolt 4, the nut 2 is a long nut with the length not less than 100mm, and the bolt 4 is screwed into the nut with the length not less than 100 mm. In addition, the bolt and the nut both adopt standard coarse threads with the specification not smaller than M15. In order to ensure the balance and stability of the prefabricated plates 1 during hoisting, at least three nuts are embedded in each prefabricated plate 1 and arranged in an isosceles triangle. The center of the isosceles triangle should be positioned to coincide with the vertical line of the center of gravity of the prefabricated plate 1. In order to prevent the nut from being pulled out of the prefabricated plate 1 during hoisting, when the nut is embedded, the nut and the steel bars in the prefabricated plate 1 are welded into a whole, and meanwhile, a group of annular grooves are machined in the outer circle of the nut to increase the friction resistance between the outer circle of the nut and the concrete of the prefabricated plate. For the convenience of hoisting, the three nuts and the three bolts adopt the nuts and the bolts with the same specification, and the bolts can be screwed into any one of the nuts during hoisting.

During specific construction, the nut is pre-embedded in the precast slab 1 in advance, and is vertical to the top surface of the precast slab; three pre-embedded nuts 2 on the precast slab 1 are distributed in a triangular shape; each nut 2 is provided with a bolt 4 which is matched with the nut and welded with a hanging ring 3, the bolt 4 welded with the hanging ring 3 is screwed into the nut 2 for fixing during hoisting, and the prefabricated plate 1 is hoisted through the hanging ring 3. The bolt can be produced into standard parts with corresponding specifications according to construction requirements by a factory, the upper hanging ring is connected with the bolt by welding according to the on-site hoisting requirements, the diameter of the bolt is 15mm, the length of the bolt is 100mm, and the specification can be properly adjusted according to the size and the weight of the on-site hoisting prefabricated plate component; the nut can be produced into a standard part with corresponding specification according to construction requirements by a factory, the outer wall of the nut is provided with a ring groove, and the specification and the size are matched with those of the bolt.

The utility model discloses hoist device installation order does: when the precast slab member is produced, the nut is embedded into the precast slab member in a way of being vertical to the slab surface; after the shaping and maintenance of the component are finished, when the hoisting construction is carried out, a bolt with a hoisting ring is screwed into the pre-embedded nut for fixation, a hoisting rope 6 penetrates through the hoisting ring, and the hoisting operation is carried out through a hoisting machine; after the hoisting construction is finished, the bolt with the hoisting ring can be directly screwed out and detached; the bolt with the hanging ring can be repeatedly hoisted.

The utility model discloses hoist device need not pre-buried rings again, is convenient for transport and later maintenance, improvement manual efficiency that can be very big, and loading and unloading are simple, quick, convenient, but wide application in the middle of the hoist and mount construction.

Claims

1. A portable hoist device for prefabricated panel, includes prefabricated panel (1), its characterized in that: a group of nuts (2) are embedded in the precast slab (1), and the nuts (2) are in threaded connection with bolts (4) with lifting rings (3).

2. The portable hoist device for prefabricated panels according to claim 1, wherein: the group of nuts (2) comprises three nuts with the same specification, and the three nuts (2) are distributed in a triangular manner and are embedded in the prefabricated slab (1) in a vertical manner on the top surface of the prefabricated slab (1).

3. The portable hoist device for prefabricated panels according to claim 1, wherein: the top end of the nut (2) is flush with the top surface of the precast slab (1) or slightly lower than the top surface of the precast slab (1).

4. The portable hoist device for prefabricated panels according to claim 1, wherein: the lifting ring (3) is welded with the top end of the bolt (4) or the top of the long screw rod is directly bent to form the lifting ring (3).

5. The portable hoist device for prefabricated panels according to claim 1, wherein: the specification of the bolt (4) is not less than M15, and the bolt (4) adopts standard coarse thread; the length of the thread section of the bolt (4) is not less than 100 mm.

6. The portable hoist device for prefabricated panels according to claim 1, wherein: the specification of the nut (2) is matched with that of the bolt (4), and the outer wall of the nut (2) is provided with a ring groove (5).