CN216377152U

CN216377152U - Hoisting device for prefabricated T-shaped beam

Info

Publication number: CN216377152U
Application number: CN202122679474.1U
Authority: CN
Inventors: 白铭宇; 白冬冬; 毕经超; 樊立明; 屈正阳
Original assignee: China Construction Civil Engineering Co Ltd
Current assignee: China Construction Civil Engineering Co Ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-04-26
Anticipated expiration: 2031-11-04

Abstract

The utility model discloses a hoisting device for a prefabricated T-shaped beam, which comprises a main hoisting tool for hoisting the prefabricated beam, and belongs to the technical field of hoisting devices; the device also comprises a truss and an auxiliary lifting appliance; at least two lifting points are arranged on the precast beam, and steel strands are arranged at the top of the precast beam; two ends of the bottom of the precast beam are respectively provided with a supporting plate, and a vertical edge of the supporting plate is provided with a hoisting hole; the steel strand is bent into an inverted U shape, and the truss is arranged right above the precast beam along the long axis direction of the precast beam; the main lifting appliance is provided with a group which is respectively connected between the truss and the steel strand; the auxiliary lifting appliances are arranged at two ends of the precast beam respectively, the lower ends of the auxiliary lifting appliances are connected with the supporting and connecting plate, and the upper ends of the auxiliary lifting appliances are connected with the truss. According to the tool, through the arrangement of the embedded steel stranded wires and the supporting and connecting plates, the prefabricated beam is prevented from being damaged by other clamps, and the integrity and the quality of the beam body are guaranteed.

Description

Hoisting device for prefabricated T-shaped beam

Technical Field

The utility model belongs to the technical field of hoisting devices, and particularly relates to a hoisting device for a prefabricated T-shaped beam.

Background

The prefabricated T-shaped beam has the advantages that the two sides of the prefabricated T-shaped beam are selected to be called flanges, the middle part of the prefabricated T-shaped beam is called a beam rib (or a web plate), and the prefabricated T-shaped beam is formed by excavating the concrete in a tension area, which does not work in resisting bending strength, in the rectangular beam, and the concrete has the same bending strength as the original rectangular beam, so that the concrete can be saved, the dead weight of a member is reduced, and the spanning capability is improved; therefore, the T-beam is widely used, especially in the aspect of bridge construction; at present, hoisting is mostly carried out in a mode that a prefabricated T beam is wrapped outside a steel wire rope, and a beam bottom plate and flange plates on two sides of the beam are protected by rubber cushion blocks; or hoisting the prefabricated T-beam by adopting a clamp; in the hoisting process, the rubber cushion blocks often deviate under the stress condition, so that the edges and corners of the beam bottom plate and the flange plate are damaged; the clamp is easy to damage the contact place of the beam body, and the quality of the beam body is affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hoisting device for a prefabricated T-shaped beam, and aims to solve the problem of protecting edges and corners of the T-shaped beam during hoisting.

In order to achieve the purpose, the utility model provides a hoisting device for a prefabricated T-shaped beam, which comprises a main hoisting tool, a truss and an auxiliary hoisting tool, wherein the main hoisting tool, the truss and the auxiliary hoisting tool are used for hoisting the prefabricated beam; at least two lifting points are arranged on the precast beam, and steel strands are arranged at the top of the precast beam; two ends of the bottom of the precast beam are respectively provided with a supporting plate, and the vertical section of the supporting plate is L-shaped; a hoisting hole is formed in the vertical edge of the supporting plate; the steel strand is bent into an inverted U shape, and an anchoring plate is arranged on the steel strand and inside the precast beam web; the truss is arranged right above the precast beam along the long axis direction of the precast beam; the main lifting appliance is provided with a group which is respectively connected between the truss and the steel strand; the auxiliary lifting appliances are arranged at two ends of the precast beam respectively, the lower ends of the auxiliary lifting appliances are connected with the supporting and connecting plate, and the upper ends of the auxiliary lifting appliances are connected with the truss.

Further, the upper end of the steel strand exceeds the top plate of the precast beam, and the lower end of the steel strand is arranged in a parallel and level mode and is embedded in the web plate of the precast beam.

Furthermore, a steel sleeve is connected to the bent part at the upper end of the steel strand.

Furthermore, limiting ribs are arranged on the horizontal edges of the supporting and connecting plates and positioned on two sides of the precast beam web plate.

Furthermore, the steel strands are provided with at least 4 groups at the lifting point position on one side of the precast beam.

Furthermore, connecting ribs are arranged between the supporting plates at the two ends of the precast beam; the connecting ribs are arranged in a group and are arranged at intervals along the short axis direction of the web plate.

Compared with the prior art, the utility model has the beneficial effects that: according to the tool, the pre-buried steel strand and the supporting and connecting plate are arranged, so that the prefabricated beam body is prevented from being damaged, and the integrity and the quality of the beam body are ensured; simple structure and convenient hoisting.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic perspective view of the present invention.

Fig. 3 is a schematic structural view of the steel strand of the present invention.

Description of the drawings: 1. prefabricating a beam; 2. steel strand wires; 2.1, steel sleeve; 2.2, anchoring plates; 3. a main spreader; 4. a truss; 5. a butt joint plate; 6. auxiliary lifting appliances; 7. limiting ribs; 8. connecting ribs; 9. and (6) hoisting holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

With the attached drawings, the utility model relates to a hoisting device of a prefabricated T-shaped beam, which comprises a main lifting appliance 3, a truss 4 and an auxiliary lifting appliance 6; the main lifting appliance 3 is arranged above the precast beam 1 and used for lifting the precast beam 1; at least two lifting points are arranged on the precast beam 1; the top of the precast beam 1 is provided with a steel strand 2; the upper ends of the steel strands 2 exceed the top plate of the precast beam 1, the steel strands 2 are bent into an inverted U shape at the positions exceeding the precast beam 1, and the lower ends of the steel strands 2 are arranged in parallel and level and are embedded in the web plate of the precast beam 1; an anchoring plate 2.2 is arranged on the steel strand 2 and inside the web plate of the precast beam 1; the bent part at the upper end of the steel strand 2 is connected with a steel sleeve 2.1; two ends of the bottom of the precast beam 1 are respectively provided with a supporting plate 5, and the vertical section of the supporting plate 5 is L-shaped; a hoisting hole 9 is formed in the vertical edge of the supporting plate 5; the truss 4 is arranged right above the precast beam 1 along the long axial direction of the precast beam 1; the main lifting appliance 3 is provided with a group which is respectively connected between the truss 4 and the steel strand 2; the auxiliary lifting appliances 6 are arranged at two ends of the precast beam 1 respectively, the lower ends of the auxiliary lifting appliances 6 penetrate into the lifting holes 9 to be connected with the supporting and connecting plate 5, and the upper ends of the auxiliary lifting appliances 6 are connected with the truss 4.

In this embodiment, the horizontal edges of the supporting and connecting plates 5 and the two sides of the web plate of the precast beam 1 are provided with limiting ribs 7. Connecting ribs 8 are arranged between the supporting plates 5 at the two ends of the precast beam 1; the connecting ribs 8 are arranged in a group and are arranged at intervals along the short axis direction of the web plate.

The bending part of the prefabricated steel strand 2 forms a hanging ring, the steel strand 2 is made of HPB300 steel bars, cold machining steel bars are forbidden, each hanging ring is calculated according to the cross section of two limbs, and the tensile stress at the hanging ring is not larger than 65MPa under the action of the communication self-weight standard value. According to the utility model, at least four lifting rings are arranged at the lifting point, and when four lifting rings exist, only three lifting rings are considered to play a role simultaneously in design. The depth of the steel strand 2 embedded into the concrete is not less than 35 times of the diameter of the hanging ring, a 180-degree hook is made at the end of the steel strand 2, and the steel strand 2 is welded or bound with the steel bar in the precast beam 1. The inner diameter of the suspension ring is not less than three times of the diameter of the steel bar, is not less than 60mm, and is suitable for calculating the strength of the steel strand.

The T-beam prefabrication is vertically prefabricated on a special moulding bed for manufacturing a precast beam field: firstly, binding a formed steel reinforcement framework on a tire mould, arranging a corrugated pipe for forming a prestressed tendon pore passage, then installing a special steel template of a beam body, pouring concrete and curing, removing the side template after the concrete reaches a certain strength, continuing curing, performing prestressed cable penetration after the concrete strength reaches the design requirement, tensioning and anchoring the prestressed tendon in sequence, and then performing the procedures of grouting, anchor sealing and the like to finish the prefabrication of the beam body. The steel strand 2 embedded at the position of the lifting point and the web plate of the precast beam 1 is fixed through the anchoring plate 2.2, is bound and connected with the steel bar of the precast beam 1, and is poured and fixed together with the precast beam 1, so that the tensile strength of the steel strand 2 is ensured; by pre-burying the steel strand 2, the steel wire rope can be prevented from damaging the beam body; and the two sides of the precast beam 1 are also provided with the supporting plates 5, so that the damage to the edges and corners of the precast beam 1 is avoided, and the integrity and quality of the beam body are ensured.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Claims

1. A hoisting device for a prefabricated T-beam comprises a main hoisting tool (3) for hoisting a prefabricated beam (1); the method is characterized in that: the lifting device also comprises a truss (4) and an auxiliary lifting appliance (6); at least two lifting points are arranged on the precast beam (1), and a steel strand (2) is arranged at the top of the precast beam (1); two ends of the bottom of the precast beam (1) are respectively provided with a supporting and connecting plate (5), and the vertical section of the supporting and connecting plate (5) is L-shaped; a hoisting hole (9) is formed in the vertical edge of the supporting plate (5); the steel strand (2) is bent into an inverted U shape, and an anchoring plate (2.2) is arranged on the steel strand (2) and positioned inside a web plate of the precast beam (1); the truss (4) is arranged right above the precast beam (1) along the long axial direction of the precast beam (1); the main lifting appliance (3) is provided with a group which is respectively connected between the truss (4) and the steel strand (2); the auxiliary lifting appliances (6) are arranged at two ends of the precast beam (1) respectively, the lower ends of the auxiliary lifting appliances (6) are connected with the supporting plate (5), and the upper ends of the auxiliary lifting appliances (6) are connected with the truss (4).

2. Hoisting device for prefabricated T-beam according to claim 1, characterized in that: the upper end of the steel strand (2) exceeds the top plate of the precast beam (1), the lower end of the steel strand (2) is parallel and level to the top plate, and the steel strand is embedded in the web plate of the precast beam (1).

3. Hoisting device for prefabricated T-beam according to claim 1, characterized in that: the bent part at the upper end of the steel strand (2) is connected with a steel sleeve (2.1).

4. Hoisting device for prefabricated T-beam according to claim 1, characterized in that: and limiting ribs (7) are arranged on the horizontal edges of the supporting and connecting plates (5) and on the two sides of the web plate of the precast beam (1).

5. Hoisting device for prefabricated T-beam according to claim 1, characterized in that: and at least 4 groups of steel strands (2) are arranged at the lifting point position on one side of the precast beam (1).

6. Hoisting device for prefabricated T-beam according to claim 1, characterized in that: connecting ribs (8) are arranged between the supporting and connecting plates (5) at the two ends of the precast beam (1); the connecting ribs (8) are arranged in a group and are arranged at intervals along the short axis direction of the web plate.