Main and auxiliary sling device applied to special-shaped component

Abstract

The utility model relates to the technical field of special-shaped prefabricated component hoisting, and discloses a main and auxiliary sling device applied to a special-shaped component, which comprises a prefabricated special-shaped component, four pre-embedded hoisting points are arranged at the upper end of the prefabricated special-shaped component, and main slings are mounted on the four pre-embedded hoisting points. Two auxiliary hoisting mechanisms are installed on the front portion of the outer surface of the prefabricated special-shaped component, and a hoisting beam is jointly installed between the upper ends of the two auxiliary hoisting mechanisms and the upper ends of the four main hoisting cables. The auxiliary hoisting mechanism comprises an auxiliary sling, a tension meter is arranged on the lower portion of the outer surface of the auxiliary sling, and the lower end of the tension meter is connected with a chain block device. According to the main and auxiliary sling device applied to the special-shaped component, damage caused by local stress concentration is avoided when a prefabricated component with large section change and large-size panel side overhanging is hoisted, it is guaranteed that the component can be stably and safely hoisted and transferred, and the main and auxiliary sling device applied to the special-shaped component is suitable for being widely used.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting special-shaped prefabricated components, in particular to a main and auxiliary sling device applied to special-shaped components. Background Art

[0002] As the quality of life of residents continues to improve, people's attention to sports and e-sports events is increasing. In these venues, a large number of stepped stands are generally set up to provide spectators with viewing venues. Since the stepped stands use on-site casting technology, the requirements for formwork erection and concrete pouring and maintenance are relatively high. Therefore, after the stepped stands are produced in the prefabricated component factory, they will be transported to the construction site for lifting and installation. Special-shaped components represented by prefabricated double-step stand panels have different functions of various parts of the prefabricated components, so there are large differences in cross-sectional dimensions, especially for double-step L-shaped prefabricated stand panel components. The panel of the stand directly bears the load of the audience and transmits it to the rib beam. Therefore, the panel is generally wider and thinner, while the rib beam plays the role of the main load-bearing part in the component. Therefore, the rib beam is generally larger in height and smaller in width, which causes the same component to have large cross-sectional changes in different parts.

[0003] However, the lifting device in the existing disclosed technical solutions only involves the main lifting cable. The lifting cable is directly connected to the prefabricated component to be lifted, and the lifting point is generally set on the rib beam. This leads to stress concentration at the position where the rib beam and the panel cross-section change during the component lifting process. In particular, when the panel part of the stand board component is cantilevered on the side of the rib beam, the stress concentration problem will be aggravated, which may easily lead to cracks or damage at the junction of the root of the cantilevered panel and the rib beam during the lifting of the prefabricated stand board component. Therefore, we introduce a main and auxiliary lifting cable device for special-shaped components. Utility Model Content

[0004] The main purpose of the utility model is to provide a main and auxiliary sling device applied to special-shaped components, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A main and auxiliary sling device for a special-shaped component, comprising a prefabricated special-shaped component, wherein the upper end of the prefabricated special-shaped component is provided with four pre-buried sling points, and the four pre-buried sling points are all installed with a main sling, and two auxiliary sling mechanisms are installed on the front of the outer surface of the prefabricated special-shaped component, and a sling beam is installed between the upper ends of the two auxiliary sling mechanisms and the upper ends of the four main slings;

[0007] The auxiliary lifting mechanism includes an auxiliary lifting rope, a tension gauge is arranged at the lower part of the outer surface of the auxiliary lifting rope, the lower end of the tension gauge is connected with a fall chain device, and the fall chain device is arranged at the lower part of the outer surface of the auxiliary lifting rope, the lower end of the auxiliary lifting rope is connected with a connecting ring, the lower end of the connecting ring is fixedly connected with a connecting fixture, and the upper end of the auxiliary lifting rope is fixedly connected to the lower end of the lifting beam.

[0008] Preferably, the embedded hanging point includes an embedded sleeve, the inner cylinder wall of the embedded sleeve is engraved with an internal thread, the interior of the embedded sleeve is connected to a connecting rod via the internal thread, and the upper end of the connecting rod is fixedly connected to the lower end of the main sling, and the embedded sleeve is anchored at the upper end of the prefabricated special-shaped component.

[0009] Preferably, the main slings can be arranged into four or six pieces according to the outer dimensions of the prefabricated special-shaped components and evenly distributed within the range of the prefabricated special-shaped components.

[0010] Preferably, the hoisting beam is made of high-strength steel structural material, and the top surface and bottom surface of the hoisting beam are respectively provided with a hoisting connection point and a plurality of longitudinally symmetrical sling connection points.

[0011] Preferably, both ends of the dynamometer are provided with firm connection joints, and the end of the fall chain device away from the auxiliary sling is connected to a connection fixture, and the connection fixture is arranged as a U-shaped structure.

[0012] Preferably, the main sling is made of steel wire rope, and the auxiliary sling is made of the same material as the main sling.

[0013] Preferably, the chain fall device is configured as a hand winch, and the tensile strength of the chain fall device matches that of the auxiliary sling.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. In the utility model, the sling device adds a secondary sling on the basis of the main sling, and the secondary sling bears a very small part of the vertical load to reduce or avoid stress concentration inside the component during the lifting process, thereby enhancing the stability of the special-shaped component during the lifting process, and also avoiding the problem of component rollover caused by accidental factors during the lifting of special-shaped or unevenly distributed load components;

[0016] 2. In the utility model, a main sling and an auxiliary sling are combined, with the main sling bearing the main deadweight load of the component, and the auxiliary sling lifting and strengthening the local part of the special-shaped component. The principle of internal stress redistribution is used to protect the integrity of the special-shaped component, which has the characteristics and advantages of improving cross-sectional stress distribution, reducing stress concentration, and enhancing lifting stability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of a special-shaped component hoisting of a main and auxiliary sling device applied to a special-shaped component of the utility model;

[0018] Figure 2 It is a schematic side view of a special-shaped component hoisting of a main and auxiliary sling device applied to a special-shaped component of the utility model;

[0019] Figure 3 The utility model is a main and auxiliary sling device for special-shaped components. Figure 2 A magnified view of middle;

[0020] Figure 4 The utility model is a schematic diagram of the overall structure of the auxiliary lifting mechanism of the main and auxiliary lifting rope device applied to special-shaped components.

[0021] In the figure: 1. Prefabricated special-shaped components; 2. Embedded lifting points; 3. Main lifting ropes; 4. Auxiliary lifting mechanism; 5. Lifting beam; 21. Embedded sleeves; 22. Internal threads; 23. Connecting suspension rods; 41. Auxiliary lifting ropes; 42. Tension gauge; 43. Chain fall device; 44. Connecting lifting rings; 45. Connecting fixtures. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A main and auxiliary sling device for a special-shaped component comprises a prefabricated special-shaped component 1, wherein four pre-buried sling points 2 are arranged at the upper end of the prefabricated special-shaped component 1, and main slings 3 are installed on the four pre-buried sling points 2, and two auxiliary sling mechanisms 4 are installed on the front of the outer surface of the prefabricated special-shaped component 1, and a sling beam 5 is installed between the upper ends of the two auxiliary sling mechanisms 4 and the upper ends of the four main slings 3;

[0025] The auxiliary lifting mechanism 4 includes an auxiliary lifting rope 41, a tension gauge 42 is arranged on the lower part of the outer surface of the auxiliary lifting rope 41, the lower end of the tension gauge 42 is connected with a fall chain device 43, and the fall chain device 43 is arranged on the lower part of the outer surface of the auxiliary lifting rope 41, the lower end of the auxiliary lifting rope 41 is connected with a connecting ring 44, the lower end of the connecting ring 44 is fixedly connected with a connecting fixture 45, and the upper end of the auxiliary lifting rope 41 is fixedly connected to the lower end of the lifting beam 5.

[0026] In this embodiment, the embedded lifting point 2 includes an embedded sleeve 21, and an internal thread 22 is engraved on the inner wall of the embedded sleeve 21. The interior of the embedded sleeve 21 is threadedly connected with a connecting rod 23 through the internal thread 22, and the upper end of the connecting rod 23 is fixedly connected to the lower end of the main sling 3, and the embedded sleeve 21 is anchored at the upper end of the prefabricated special-shaped component 1; the main sling 3 can be set to four or six according to the outer dimensions of the prefabricated special-shaped component 1 and evenly distributed within the range of the prefabricated special-shaped component 1, which plays a major role in bearing the load during the lifting process of the prefabricated special-shaped component 1, and on the one hand, assists the main lifting The cable 3 bears the lifting of the prefabricated special-shaped component 1, enhances the stability of the prefabricated special-shaped component 1 during the lifting process, and on the other hand, can lift the cantilevered part or weak part of the prefabricated special-shaped component 1 upward to avoid local damage due to gravity during the lifting process; the lifting beam 5 is made of high-strength steel structure material, and its length and cross-sectional size should meet the strength and rigidity requirements of the component lifting, and the top and bottom surfaces of the lifting beam 5 are respectively provided with lifting connection points and multiple longitudinally symmetrical sling connection points, which is conducive to the connection between the main sling cable 3 and the auxiliary sling cable 41 and the lifting beam 5.

[0027] In this embodiment, both ends of the dynamometer 42 are provided with firm connecting joints, and the end of the chain fall device 43 away from the auxiliary sling 41 is connected to the connecting fixture 45, and the connecting fixture 45 is set to a U-shaped structure, so that one side of the bayonet of the connecting fixture 45 can be reliably connected to the edge of the cantilevered part or weak part of the prefabricated special-shaped component 1 by clamping; the main sling 3 is made of steel wire rope, and the auxiliary sling 41 is made of the same material as the main sling 3; the chain fall device 43 is set to a hand winch, and the tensile strength of the chain fall device 43 matches that of the auxiliary sling 41. In actual application, the technician can adjust the tension of the auxiliary sling 41 by adjusting the size of the zipper in the chain fall device 43, and at the same time, adjust the tension of the auxiliary sling 41 by reading the reading of the dynamometer 42. The dynamometer 42 is a measuring device with tension readings, and the measuring range of the dynamometer 42 should meet the maximum tension that the auxiliary sling 41 can withstand during auxiliary lifting.

[0028] It should be noted that the utility model is a main and auxiliary sling device applied to special-shaped components. During use, the main sling 3 lifting point is first designed and determined according to the prefabricated special-shaped component 1, and the lifting point 2 is pre-embedded at the point when the prefabricated special-shaped component 1 is produced. Then, the sling inspection is completed before the hook is used, and the free ends of the main sling 3 and the auxiliary sling 41 are firmly connected to the lifting beam 5, and the sizes of the main sling 3 and the auxiliary sling 41 are preliminarily adjusted. Before the prefabricated special-shaped component 1 is ready to be lifted, the main sling 3 is firmly connected to the embedded lifting point 2 one by one, and then the lifting equipment is started, and the main sling 3 is gradually used to adjust from a relaxed state to a semi-tensioned state, and the size of each main sling 3 is adjusted to ensure The prefabricated special-shaped component 1 is in a horizontal state when it is lifted, and then the overall size of the auxiliary sling 41 is adjusted by the chain-falling device 43, and then each connecting fixture 45 is clamped at the cantilevered part or the lifting and reinforcing part of the prefabricated special-shaped component 1 according to the position required by the design. When lifting, it should first be ensured that the prefabricated special-shaped component 1 can be lifted under the action of the main sling 3 and that the prefabricated special-shaped component 1 can be in a horizontal state, and then the chain-falling device 43 under each auxiliary sling 41 is adjusted again according to the reading of the tension meter 42, the length of the auxiliary sling 41 can be adjusted to change the tension of the auxiliary sling 41, and then the chain-falling device 43 is used to adjust the value of each tension meter 42 between the tension given in the design When the tensioning force is within the range, the tensioning can be stopped, and the lifting equipment can be started again to lift the prefabricated special-shaped component 1 steadily and install it in place. The sling device adds an auxiliary sling 41 on the basis of the main sling 3, and adopts the combination of the main sling 3 and the auxiliary sling 41. The main sling 3 bears the main deadweight load of the component, and the auxiliary sling 41 lifts and strengthens the part of the prefabricated special-shaped component 1 and bears a very small part of the vertical load. The auxiliary sling 41 is used to reduce or avoid the stress concentration inside the prefabricated special-shaped component 1 during the lifting process to cause damage, and the principle of internal stress redistribution is used to protect the integrity of the prefabricated special-shaped component 1, thereby enhancing the stability of the special-shaped component during the lifting process and avoiding the special-shaped component. The prefabricated special-shaped component 1 with uneven shape or load distribution may overturn due to accidental factors during lifting. The two slings have different functions and cooperate with each other. The main sling 3 bears most of the deadweight load of the prefabricated special-shaped component 1, which solves the problem that the prefabricated special-shaped component 1 can be lifted. The auxiliary sling 41 can achieve quantitative adjustment to control the tension of the auxiliary sling 41 within a certain range, ensuring that the tension of the auxiliary sling 41 is moderate. On the one hand, it can improve the stress concentration problem of the cantilevered part or the part with large cross-sectional changes of the prefabricated special-shaped component 1, avoid the local downward cracking damage due to gravity, or avoid the excessive tension of the auxiliary sling 41 causing local upward cracking damage;On the other hand, the tension of the auxiliary sling 41 can redistribute the stress of the main sling 3 to a certain extent, preventing the problem of excessive stress in a single embedded sling point 2. The device is mainly used in the lifting scenarios of components with large size / weight, strange shape, large cross-sectional changes, or large-sized cantilever plates on the side. It has the characteristics and advantages of improving cross-sectional stress distribution, reducing stress concentration, and enhancing lifting stability and safety. ;

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A main and auxiliary sling device for special-shaped components, comprising a prefabricated special-shaped component (1), characterized in that: The upper end of the prefabricated special-shaped component (1) is provided with four embedded lifting points (2), and main lifting cables (3) are installed on the four embedded lifting points (2). Two auxiliary lifting mechanisms (4) are installed on the front of the outer surface of the prefabricated special-shaped component (1), and a lifting beam (5) is installed between the upper ends of the two auxiliary lifting mechanisms (4) and the upper ends of the four main lifting cables (3); The auxiliary lifting mechanism (4) comprises an auxiliary lifting rope (41), a tension gauge (42) is arranged at the lower part of the outer surface of the auxiliary lifting rope (41), the lower end of the tension gauge (42) is connected to a fall chain device (43), and the fall chain device (43) is arranged at the lower part of the outer surface of the auxiliary lifting rope (41), the lower end of the auxiliary lifting rope (41) is connected to a connecting lifting ring (44), the lower end of the connecting lifting ring (44) is fixedly connected to a connecting fixture (45), and the upper end of the auxiliary lifting rope (41) is fixedly connected to the lower end of the lifting beam (5).

2. A main and auxiliary sling device for special-shaped components according to claim 1, characterized in that: The embedded suspension point (2) comprises an embedded sleeve (21), an inner wall of which is engraved with an internal thread (22), the interior of the embedded sleeve (21) is threadedly connected to a connecting suspension rod (23) via the internal thread (22), and the upper end of the connecting suspension rod (23) is fixedly connected to the lower end of the main suspension cable (3), and the embedded sleeve (21) is anchored at the upper end of the prefabricated special-shaped component (1).

3. The main and auxiliary sling device for special-shaped components according to claim 2, characterized in that: The main slings (3) can be arranged into four or six pieces according to the external dimensions of the prefabricated special-shaped component (1) and can be evenly distributed within the range of the prefabricated special-shaped component (1).

4. The main and auxiliary sling device for special-shaped components according to claim 3, characterized in that: The hoisting beam (5) is made of high-strength steel structural material, and the top surface and the bottom surface of the hoisting beam (5) are respectively provided with a hoisting connection point and a plurality of longitudinally symmetrical sling cable connection points.

5. The main and auxiliary sling device for special-shaped components according to claim 1, characterized in that: Both ends of the tension meter (42) are provided with firm connection joints, and one end of the chain-falling device (43) away from the secondary sling (41) is connected to a connection fixture (45), and the connection fixture (45) is provided as a U-shaped structure.

6. The main and auxiliary sling device for special-shaped components according to claim 5, characterized in that: The main sling (3) is made of steel wire rope, and the auxiliary sling (41) is made of the same material as the main sling (3).

7. A main and auxiliary sling device for special-shaped components according to claim 6, characterized in that: The chain-falling device (43) is configured as a hand chain hoist, and the tensile strength of the chain-falling device (43) matches that of the auxiliary sling (41).

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