Precast beam and slab hoisting device and system
By designing the prefabricated beam and slab lifting device, and using the combined structure of protective rails and load-bearing rails, the problems of easy bending of the steel cables and damage to the edges and angles of the prefabricated beam and slabs are solved, achieving safer and more efficient lifting operations.
Patent Information
- Application Number
- CN202421291070.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-06
AI Technical Summary
In the prior art, when hoisting prefabricated beam slabs, steel cables are susceptible to bending and breaking, and damage is prone to the edges and corners of the bottom of the prefabricated beam slabs, resulting in high costs and difficult operation.
A prefabricated beam and slab hoisting device is designed, including a lifting ring, a steel cable, a protective rail and a load-bearing rail. The two ends of the steel cable are connected to the lifting ring. The protective rail and the load-bearing rail are respectively arranged between the steel cables and its distal ends. The prefabricated beam and slab are arranged between the bearing rail and the protective rail. The force direction of the lifting ring passes through the center of gravity of the prefabricated beam and slab.
It effectively avoids the contact between the steel cable and the prefabricated beam slab, reduces the risk of bending and breaking, improves the safety and efficiency of lifting, and reduces costs.
Smart Images
Figure CN222665137U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of engineering machinery, and in particular to a prefabricated beam and slab hoisting device and system. Background Art
[0002] Lifting equipment is a commonly used engineering equipment that can be seen everywhere in life. As the name suggests, it is a process equipment for lifting products or raw materials. It is mainly used for turnover, movement, loading and unloading of products or raw materials. For the lifting of these products, it is obvious that the use of simple lifting equipment cannot meet the operating requirements of the products in terms of safety, reliability or strength. Moreover, these products are expensive, especially the products of engineering construction, which are very dangerous during the lifting process. For the lifting of these products, in order to ensure the reliability and safety of the lifting process, special lifting equipment must be designed and manufactured according to the quality and structure of the products to ensure the stability and reliability of the operation process and the foolproofness of the operation process.
[0003] The inventor has found that the current highway project adjustment uses a crane or a bridge erection machine, and the hoisting rope of the hoisting device basically uses a large-diameter wire rope for bottom lifting. This method is a soft lifting method. During operation, the wire rope selected at one time is relatively long, which makes manual on-site operation difficult. At the same time, due to stress concentration at the corners of the bottom of the beam, the wire rope is easily bent. The service life of the wire rope is not long, and it is frequently replaced and cannot be repeatedly used, which is costly. Utility Model Content
[0004] The utility model aims to provide a prefabricated beam and slab hoisting device and system, which can avoid the stress concentration at the corners of the beam bottom, causing the steel wire rope to be easily bent.
[0005] The embodiment of the utility model is achieved as follows:
[0006] In a first aspect, the utility model provides a prefabricated beam and slab hoisting device, comprising a lifting ring, a steel cable, a protective steel rail and a bearing steel rail, wherein at least two steel cables are provided, one end of each of the two steel cables is connected to the lifting ring, the protective steel rail is provided between the two steel cables, and the bearing steel rail is connected to one end of the two steel cables away from the lifting ring;
[0007] The prefabricated beam slab is arranged between the load-bearing rail and the protection rail, and the force application direction of the lifting ring passes through the center of gravity of the prefabricated beam slab.
[0008] In an optional embodiment, the protective steel rail includes a first steel rail arranged between the two steel cables, a connecting steel plate and a plurality of bolt fixing buckles, two first steel rails are provided, the two first steel rails are arranged in parallel and connected by the connecting steel plate, and a plurality of bolt fixing buckles are arranged on the first steel rail for connecting the prefabricated beam slab.
[0009] In an optional embodiment, the bolt fixing buckle includes a fixing seat and a fixing bolt, the fixing seat is arranged on the first rail, a threaded hole is arranged on the fixing seat, and the fixing bolt is inserted into the threaded hole and connected to the prefabricated beam plate.
[0010] In an optional embodiment, the first rail includes a plurality of first track sections, a plurality of fish plates and a plurality of connecting bolts, the plurality of first track sections are connected end to end, two adjacent first track sections are connected by the fish plates, and both ends of the fish plates are respectively fixed to the two first track sections by the connecting bolts.
[0011] In an optional embodiment, the load-bearing rail includes a second rail and a fixing member, and two fixing members are provided. The two fixing members are respectively arranged at two ends of the bottom of the second rail for respectively connecting the two steel cables.
[0012] In an optional embodiment, the load-bearing rail further includes a dead-angle rubber pad, and the dead-angle rubber pad is arranged at the connection between the fixing member and the second rail.
[0013] In an optional embodiment, the second rail includes a plurality of second track sections, a plurality of fish plates and a plurality of connecting bolts, the plurality of second track sections are connected end to end, two adjacent second track sections are connected by the fish plates, and both ends of the fish plates are respectively fixed to the two second track sections by the connecting bolts.
[0014] In an optional embodiment, both ends of the steel cable are configured to be ring-shaped.
[0015] In an optional embodiment, the protection rail and the load-bearing rail are arranged in parallel.
[0016] In a second aspect, the utility model provides a prefabricated beam and slab hoisting system, comprising a prefabricated beam and slab hoisting device as described in any one of the aforementioned embodiments.
[0017] The beneficial effects of the embodiments of the utility model are:
[0018] The utility model provides a prefabricated beam slab hoisting device, including a lifting ring, a steel cable, a protective steel rail and a bearing steel rail, at least two steel cables are provided, one end of the two steel cables are connected to the lifting ring, the protective steel rail is provided between the two steel cables, and the bearing steel rail is connected to one end of the two steel cables away from the lifting ring; the prefabricated beam slab is provided between the bearing steel rail and the protective steel rail, and the force direction of the lifting ring passes through the center of gravity of the prefabricated beam slab. In the utility model, the prefabricated beam slab is provided between the bearing steel rail and the protective steel rail, so as to avoid the contact between the steel cable and the corners of the prefabricated beam slab, which is conducive to avoiding the problem of wire breakage and strand breakage caused by concentrated force on the bending part of the wire rope under heavy load and damage caused by the bottom corners of the beam slab. At the same time, it solves the operation of workers climbing up to hang and release the wire rope; the protective steel rail on the top surface of the prefabricated beam slab is limited and fixed, and the bearing steel rail below is used to cover the bottom, and the steel cables at both ends are independently connected up and down, which is safer and more efficient than the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 A schematic diagram of a prefabricated beam and slab hoisting device from a first perspective provided in an embodiment of the utility model;
[0021] Figure 2 for Figure 1 A magnified schematic diagram of the middle part A;
[0022] Figure 3 A schematic diagram of a second viewing angle of a prefabricated beam and slab hoisting device provided by an embodiment of the utility model;
[0023] Figure 4 for Figure 3 The enlarged schematic diagram of the middle part B;
[0024] Figure 5 for Figure 3 Enlarged schematic diagram of part C in the middle.
[0025] icon:
[0026] 10-lifting ring; 20-steel cable; 30-protective rail; 31-first track section; 32-fishtail plate; 33-connecting bolt; 34-connecting steel plate; 35-bolt fixing buckle; 351-fixing seat; 352-fixing bolt; 40-bearing rail; 41-second track section; 42-fixing component; 43-dead corner rubber pad; 50-precast beam and slab. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0030] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] The present embodiment provides a prefabricated beam and slab lifting system, which is mainly used in bridge construction and various large-scale engineering lifting fields. In order to solve the problems in the prior art that steel cables are easily broken and the edges and corners at the bottom of the prefabricated beams are easily damaged, the present embodiment provides a prefabricated beam and slab lifting device.
[0034] like Figure 1-Figure 5 As shown, the precast beam and slab lifting device provided in this embodiment includes a lifting ring 10, a steel cable 20, a protective rail 30 and a load-bearing rail 40. At least two steel cables 20 are provided, one end of each of the two steel cables 20 is connected to the lifting ring 10, the protective rail 30 is arranged between the two steel cables 20, and the load-bearing rail 40 is connected to one end of the two steel cables 20 away from the lifting ring 10; the precast beam and slab 50 is arranged between the load-bearing rail 40 and the protective rail 30, and the force application direction of the lifting ring 10 passes through the center of gravity of the precast beam and slab 50.
[0035] In detail, this embodiment determines the position of the protection rail 30 and the position of the hanging point according to the position of the load-bearing rail 40, ensuring that the lower bottom surface of the load-bearing rail 40 and the bottom surface of the prefabricated beam 50 are in contact on the same vertical section. In addition, the center of gravity position of the hanging point of the prefabricated beam 50 is determined, and the center of gravity should be on the central axis of the lifting ring 10. The length of the plug-in of the steel cable 20 is controlled according to the position of the center of gravity and the angle of the lifting. It is preferably controlled between 45° and 60°, wherein the tension of the steel cable 20 increases with the change of the angle of the steel cable 20; in particular, the position of the center of gravity and the central axis of the side beam needs to be calculated and carefully confirmed on site.
[0036] It can be understood that in the present embodiment, the precast beam 50 is arranged between the bearing rail 40 and the protective rail 30, and the length of the bearing rail 40 is slightly longer than the bottom of the precast beam 50, and the length of the protective rail 30 is longer than the top of the precast beam 50, which can avoid the steel cable 20 from contacting the edges and corners of the precast beam 50, and is conducive to avoiding the problem of wire breakage and damage caused by concentrated force on the bending part of the wire rope under heavy load, and at the same time, the operation of workers climbing up to hang and release the wire rope is solved; the protective rail 30 on the top surface of the precast beam 50 is limited and fixed, and the bearing rail 40 below is used as a bottom support, and the steel cables 20 at both ends are independently connected up and down, which is safer and more efficient than the prior art.
[0037] In a preferred embodiment, the protective rail 30 includes a first rail arranged between two steel cables 20, a connecting steel plate 34 and a plurality of bolt fixing buckles 35. Two first rails are provided, the two first rails are arranged in parallel and connected by the connecting steel plate 34. A plurality of bolt fixing buckles 35 are arranged on the first rail for connecting the prefabricated beam slab 50.
[0038] In detail, the two first steel rails are close together and are connected to the connecting steel plate 34 through a welding process, so that the two first steel rails are fixed together in turn; the bottom of the first steel rail contacts the precast beam 50, and the first steel rail and the top of the precast beam 50 are fixed together by a bolt fixing buckle 35.
[0039] It can be understood that, in this embodiment, two first steel rails are arranged to contact the precast beam slab 50, so that the contact area can be increased, making the precast beam slab 50 more stable during the lifting process; it is worth noting that this embodiment does not limit the number of first steel rails, which can be one, two or more, and the specific number can be determined according to the circumstances.
[0040] In a preferred embodiment, the bolt fixing buckle 35 includes a fixing seat 351 and a fixing bolt 352 . The fixing seat 351 is disposed on the first rail. A threaded hole is provided on the fixing seat 351 . The fixing bolt 352 is inserted into the threaded hole and connected to the prefabricated beam slab 50 .
[0041] In a preferred embodiment, the first rail includes a plurality of first rail sections 31, a plurality of fish plates 32 and a plurality of connecting bolts 33. The plurality of first rail sections 31 are connected end to end, two adjacent first rail sections 31 are connected by the fish plates 32, and the two ends of the fish plates 32 are respectively fixed to the two first rail sections 31 by connecting bolts 33. The two ends of the first rail are fish plates 32, and the ends of the fish plates 32 are provided with connecting bolts 33, so the steel cable 20 is actually connected to the connecting bolts 33, so when the precast beam slab 50 is hoisted, the connecting bolts 33 are the force points.
[0042] In detail, the first rail section 31 in this embodiment adopts a 43-shaped rail, each first rail section 31 is 60 cm, and the size of the connecting steel plate 34 is 10 mm. It can be understood that the number of the first rail sections 31 in this embodiment can be appropriately increased or decreased according to the prefabricated beams 50 of different sizes, and the added first rail sections 31 are also connected with the fish plates 32 of various countries to ensure the construction length of the protective rail 30.
[0043] In a preferred embodiment, the load-bearing rail 40 includes a second rail and a fixing member 42 . Two fixing members 42 are provided. The two fixing members 42 are respectively provided at two ends of the bottom of the second rail for connecting two steel cables 20 .
[0044] In detail, the main function of the bearing rail 40 is to bear the prefabricated beam slab 50 .
[0045] In a preferred embodiment, the load-bearing rail 40 further includes a dead-angle rubber pad 43 , which is disposed at the connection between the fixing member 42 and the second rail.
[0046] It is understandable that due to the gap in the connection between the steel cable 20 and the fixed component 42, the prefabricated beam 50 is prone to slipping or deformation and damage during the lifting process. The dead corner rubber pad 43 can fill the dead corner, and during the lifting process, the steel cable 20 will not slip or deform and damage.
[0047] In this embodiment, the second rail includes multiple second track sections 41, multiple fishplates 32 and multiple connecting bolts 33. The multiple second track sections 41 are connected end to end, and two adjacent second track sections 41 are connected by the fishplate 32. The two ends of the fishplate 32 are respectively fixed to the two second track sections 41 by connecting bolts 33.
[0048] In detail, similar to the first rail, multiple second rail segments 41 are connected by fishtail plates 32. Since the second rail is mainly used for weighing, the second rail segment 41 needs to have higher strength. Therefore, the second rail segment 41 in this embodiment adopts a 70-shaped rail.
[0049] In a preferred embodiment, both ends of the steel cable 20 are arranged in a ring shape. It is understandable that the two ends of the steel cable 20 are made into rings for easy installation.
[0050] The prefabricated beam and slab hoisting device provided in this embodiment has the following advantages:
[0051] This embodiment is simple to operate and easy to transport, which can reduce the construction intensity and safety risks of workers; it has low investment cost and strong practicality, and can well protect the concrete entity and appearance quality; the bearing rail 40 has good stability and high safety performance, and the materials are assembled from good components, which can be processed on site. It avoids the overturning of the prefabricated beam 50 due to insufficient strength of the protection device material, resulting in economic losses and public opinion risks.
[0052] In addition, the precast beam 50 is arranged between the load-bearing rail 40 and the protective rail 30, and the length of the load-bearing rail 40 is slightly longer than the bottom of the precast beam 50, and the length of the protective rail 30 is longer than the top of the precast beam 50, which can avoid the steel cable 20 from contacting the edges and corners of the precast beam 50, which is beneficial to avoiding the problem of wire breakage and damage to the bottom edges and corners of the beam caused by concentrated force on the bending part of the steel wire rope under heavy load in the past.
[0053] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A prefabricated beam and slab hoisting device, characterized in that: It comprises a lifting ring, a steel cable, a protective steel rail and a bearing steel rail, wherein at least two steel cables are provided, one end of each of the two steel cables is connected to the lifting ring, the protective steel rail is provided between the two steel cables, and the bearing steel rail is connected to one end of the two steel cables away from the lifting ring; The prefabricated beam slab is arranged between the load-bearing rail and the protection rail, and the force application direction of the lifting ring passes through the center of gravity of the prefabricated beam slab.
2. The prefabricated beam and slab hoisting device according to claim 1, characterized in that: The protective steel rail includes a first steel rail arranged between the two steel cables, a connecting steel plate and a plurality of bolt fixing buckles. Two first steel rails are provided, the two first steel rails are arranged in parallel and connected by the connecting steel plate. The plurality of bolt fixing buckles are arranged on the first steel rail for connecting the prefabricated beam slab.
3. The prefabricated beam and slab hoisting device according to claim 2, characterized in that: The bolt fixing buckle comprises a fixing seat and a fixing bolt. The fixing seat is arranged on the first rail. A through threaded hole is arranged on the fixing seat. The fixing bolt is inserted into the threaded hole and connected to the prefabricated beam plate.
4. The prefabricated beam and slab hoisting device according to claim 2, characterized in that: The first rail includes a plurality of first track sections, a plurality of fish plates and a plurality of connecting bolts. The plurality of first track sections are connected end to end, two adjacent first track sections are connected by the fish plates, and both ends of the fish plates are respectively fixed to the two first track sections by the connecting bolts.
5. The prefabricated beam and slab hoisting device according to claim 1, characterized in that: The load-bearing steel rail comprises a second steel rail and a fixing component. Two fixing components are provided. The two fixing components are respectively arranged at two ends of the bottom of the second steel rail and are used to respectively connect the two steel cables.
6. The prefabricated beam and slab hoisting device according to claim 5, characterized in that: The load-bearing rail further comprises a dead-angle rubber pad, which is arranged at the connection between the fixing member and the second rail.
7. The prefabricated beam and slab hoisting device according to claim 5, characterized in that: The second rail includes a plurality of second rail sections, a plurality of fish plates and a plurality of connecting bolts. The plurality of second rail sections are connected end to end, two adjacent second rail sections are connected by the fish plates, and both ends of the fish plates are respectively fixed to the two second rail sections by the connecting bolts.
8. The prefabricated beam and slab hoisting device according to claim 1, characterized in that: Both ends of the steel cable are arranged in a ring shape.
9. The prefabricated beam and slab hoisting device according to claim 1, characterized in that: The protection rail and the load-bearing rail are arranged in parallel.
10. A prefabricated beam and slab hoisting system, characterized in that: It comprises a prefabricated beam and slab hoisting device as described in any one of claims 1 to 9.