A lifting device for prefabricated staircases

Abstract

The utility model discloses a kind of lifting appliance for prefabricated stair, including suspender, lug, ring and steel wire rope;The quantity of lug is multiple, multiple the lug is respectively fixed in the top surface and bottom surface of the both ends of suspender;The ring is detachably connected on the lug located in the bottom surface of suspender;The steel wire rope passes through the ring and its both ends can hang prefabricated stair.The utility model steel wire rope passes through ring, and its both ends connect prefabricated stair, steel wire rope both ends can adjust length relative to ring, in hoisting process, steel wire rope can automatically adjust its both ends length according to the gravity center of prefabricated stair, make the gravity center of prefabricated stair always be in natural position, prevent the occurrence of large amplitude swing in hoisting process, stability is higher, greatly improve hoisting efficiency, and safety factor is relatively high.The utility model design is reasonable, simple structure, is suitable for large-scale popularization.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment technology for building construction, and more specifically to a hoisting device for prefabricated stairs. Background Technology

[0002] Staircases in high-rise residential buildings are mainly divided into cast-in-place staircases and precast staircases. Among them, precast staircases are increasingly widely used in modern buildings due to their advantages such as ease of manufacturing, standardization, mass production, energy saving, and high installation efficiency. Precast staircases require specialized hoisting equipment during installation, using cranes to move them from their original placement location to the pre-designated location within the building.

[0003] Therefore, how to provide a special lifting tool for prefabricated stairs is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the present invention provides a lifting tool for prefabricated stairs, which eliminates the problem of difficulty in connecting the lifting tool and the stairs when lifting prefabricated stairs, reduces the sway of the prefabricated stairs during the lifting process, and greatly improves the installation efficiency of prefabricated stairs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A prefabricated staircase lifting device, comprising:

[0007] Suspended beam,

[0008] Lifting lugs, wherein there are multiple lifting lugs, and the multiple lifting lugs are respectively fixed to the top and bottom surfaces at both ends of the lifting beam;

[0009] A lifting ring, which is detachably connected to a lifting lug located on the bottom surface of the lifting beam;

[0010] A steel wire rope, which passes through the lifting ring and has both ends capable of suspending a prefabricated staircase.

[0011] The beneficial effects of this utility model are that after the wire rope passes through the lifting ring, its two ends are connected to the prefabricated staircase. The length of the two ends of the wire rope can be adjusted relative to the lifting ring. During the hoisting process, the length of the wire rope at both ends can be automatically adjusted according to the center of gravity of the prefabricated staircase, so that the center of gravity of the prefabricated staircase is always in a natural position, preventing large-scale swaying during hoisting, resulting in high stability, greatly improving hoisting efficiency, and having a relatively high safety factor. This utility model has a reasonable design and simple structure, making it suitable for large-scale promotion.

[0012] Preferably, the suspension beam is made of square steel with a wall thickness of not less than 5mm. This ensures that the suspension beam has sufficient strength and rigidity to support the weight of the prefabricated staircase.

[0013] Preferably, the lifting lug includes four lug plates, which are welded to the side walls at both ends of the lifting beam. The four lug plates are grouped in pairs, with one side panel extending upwards or downwards along the side wall of the lifting beam. Holes are formed on the surface of the lug plates away from the lifting beam. The holes on the upper part of the lug plates are used to connect the lifting ropes of the hoisting equipment, and the holes on the lower part are used to install lifting rings.

[0014] Preferably, the lifting ring is bolted to the hole on the ear plate opposite to the lifting beam by a pin. The lifting ring connection is simple and reliable, and facilitates the assembly of the lifting device.

[0015] Preferably, the thickness of the ear plate is not less than 2 cm. This ensures that the ear plate has sufficient load-bearing capacity.

[0016] Preferably, both ends of the wire rope are fixed with lifting nails, and nuts that are threadedly connected to the lifting nails are pre-embedded in the prefabricated staircase. The connection between the lifting nails and the pre-embedded nuts on the prefabricated staircase eliminates the need for binding, and the vertical lifting method avoids collisions with pre-reserved openings in the building, preventing chipping and breakage of the prefabricated staircase and ensuring its integrity.

[0017] Preferably, there are two steel wire ropes, each passing through the lifting rings at both ends of the lifting beam; the diameter of the two steel wire ropes is not less than 18mm. Using two steel wire ropes enables four-point lifting of the prefabricated staircase, ensuring overall stability during the lifting process.

[0018] Preferably, the lengths of the two steel wire ropes are 1.2m and 2.4m, respectively. This facilitates the installation of the prefabricated staircase.

[0019] Preferably, the length of the lifting beam is 60-90cm.

[0020] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a lifting device for prefabricated stairs. By combining steel wire ropes and lifting rings, the swaying of the prefabricated stairs during the lifting process can be reduced, avoiding collisions with the reserved openings to a certain extent. Simultaneously, the self-adjusting nature of the steel wire ropes ensures that the center of the prefabricated stairs remains in a natural position, resulting in high stability. Furthermore, the adjustment amount of the prefabricated stairs is halved, greatly improving lifting efficiency and providing a high safety factor. The steel wire ropes pass freely through the lifting rings without needing to be fixed. During the slow lifting of the prefabricated stairs, the lengths of the steel wire ropes at both ends of the lifting rings are adjusted to be equal by adjusting the center of gravity of the prefabricated stairs, thus ensuring smooth lifting. Compared with other technologies, this eliminates the difficulty of connecting the lifting device to the stairs during lifting, reduces the swaying amplitude of the prefabricated stairs during lifting, and greatly improves the installation efficiency of the prefabricated stairs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 A front view of the lifting device provided by this utility model;

[0023] Figure 2 A side view of the lifting device provided by this utility model.

[0024] Among them, 1-lifting beam; 2-lifting lug; 3-lifting ring; 4-steel wire rope; 5-lifting nail. Detailed Implementation

[0025] 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.

[0026] As attached Figure 1 and 2 As shown, a prefabricated staircase lifting device according to an embodiment of this utility model includes a lifting beam 1, lifting lugs 2, lifting rings 3, and a steel wire rope 4. The lifting beam 1 is made of square steel with a wall thickness of not less than 5mm, a side length of 50mm, and a length of 60-90cm. Square steel is a commonly used material on construction sites and is readily available; scrap square steel can be used as the lifting beam. Multiple lifting lugs 2 are fixed to the top and bottom surfaces of both ends of the lifting beam 1. The lifting rings 3 are detachably connected to the lifting lugs 2 located on the bottom surface of the lifting beam 1. The steel wire rope 4 passes through the lifting rings 3, and its two ends can suspend the prefabricated staircase. The steel wire rope 4 passes through the lifting rings and can move freely relative to the lifting rings 3. During the lifting operation, the length of both ends of the steel wire rope 4 can be freely adjusted according to the center of gravity of the prefabricated staircase, ensuring that the center of the prefabricated staircase is in a natural state, ensuring overall stability during the lifting process, preventing chipping or breakage of the prefabricated staircase due to collision with the reserved opening, and ensuring effective assembly and installation of the prefabricated staircase.

[0027] To further optimize the above technical solution, the lifting lug 2 includes a lug plate, and the number of lug plates is four. The four lug plates are welded to the side walls at both ends of the lifting beam 1. The four lug plates are grouped in pairs, and one side panel of each lug plate extends upward or downward along the side wall of the lifting beam 1. Holes are opened on the plate surface of the four lug plates away from the lifting beam 1.

[0028] like Figure 2 As shown, the ear plates are welded and fixed to the side wall of the lifting beam. The two ear plates located at both ends of the lifting beam are staggered vertically relative to the top and bottom surfaces of the lifting beam. The holes on the upper ear plate are used to connect the lifting ropes of the lifting equipment, and the holes on the lower ear plate are used to install the lifting rings.

[0029] In some other embodiments, the lifting ring 3 is bolted to the hole on the ear plate below the lifting beam 1 by a pin.

[0030] To further optimize the above technical solution, improve the load-bearing capacity of the ear plate, and ensure that it can bear the overall hoisting load of the lifting equipment and prefabricated stairs, the thickness of the ear plate shall not be less than 2cm.

[0031] In this embodiment, both ends of the wire rope 4 are fixed with lifting nails 5, and nuts that are threadedly connected to the lifting nails 5 are pre-embedded in the prefabricated staircase. The lifting nails and the pre-embedded nuts of the prefabricated staircase are mechanically connected. During the hoisting process, the height of the lifting device is adjusted to bring the lifting nails close to the lifting points of the prefabricated staircase, which facilitates the connection and solves the technical problem of difficult alignment of pre-embedded parts in previous technologies.

[0032] In this embodiment, there are two steel wire ropes 4, which pass through the lifting rings 3 at both ends of the lifting beam 1 respectively; the diameter of the two steel wire ropes 4 is not less than 18mm, and the lengths are 1.2m and 2.4m respectively.

[0033] The prefabricated staircase is lifted at four points using two steel wire ropes, ensuring stable hoisting and preventing significant swaying during the process. The use of two steel wire ropes of different lengths also facilitates the installation of the prefabricated staircase, improving construction efficiency.

[0034] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lifting device for prefabricated stairs, characterized in that, include: Hanging beam (1), Lifting lugs (2), there are multiple lifting lugs (2), and the multiple lifting lugs (2) are respectively fixed to the top and bottom surfaces of both ends of the lifting beam (1); A lifting ring (3) is detachably connected to a lifting lug (2) located on the bottom surface of the lifting beam (1); A steel wire rope (4) passes through the lifting ring (3) and its two ends can suspend a prefabricated staircase.

2. The prefabricated staircase lifting device according to claim 1, characterized in that, The lifting beam (1) is made of square steel with a wall thickness of not less than 5mm.

3. A prefabricated staircase lifting device according to claim 2, characterized in that, The lifting lug (2) includes a lug plate, and the number of the lug plates is four. The four lug plates are respectively welded to the side walls at both ends of the lifting beam (1). The four lug plates are grouped in pairs and one side panel of each lug plate extends upward or downward along the side wall of the lifting beam (1). Holes are provided on the plate surface of the four lug plates away from the lifting beam (1).

4. A prefabricated staircase lifting device according to claim 3, characterized in that, The lifting ring (3) is bolted to the hole on the ear plate below the lifting beam (1) by a pin.

5. A prefabricated staircase lifting device according to claim 3, characterized in that, The thickness of the ear plate is not less than 2cm.

6. A prefabricated staircase lifting device according to claim 1, characterized in that, Both ends of the wire rope (4) are fixed with hanging nails (5), and nuts that are threadedly connected to the hanging nails (5) are pre-embedded on the prefabricated staircase.

7. A prefabricated staircase lifting device according to claim 1, characterized in that, The number of steel wire ropes (4) is two and they pass through the lifting rings (3) at both ends of the lifting beam (1); the diameter of the two steel wire ropes (4) is not less than 18mm.

8. A prefabricated staircase lifting device according to claim 1, characterized in that, The lengths of the two steel wire ropes (4) are 1.2m and 2.4m, respectively.

9. A prefabricated staircase lifting device according to claim 1, characterized in that, The length of the hanging beam (1) is 60-90cm.

Images