Hoisting part of prefabricated part

Abstract

The utility model relates to the field of construction engineering, in particular to a hoisting part of a prefabricated part, which comprises an anchor rod and a hoisting ring. One end of the anchor rod is anchored in the concrete member, the other end of the anchor rod is exposed in the notch, and the notch is a groove in the surface of the concrete member. The hanging ring is detachably connected with the end, exposed out of the notch, of the anchor rod. The anchor rod is arranged in the concrete member, and the exposed part of the anchor rod is located in the notch and detachably connected with the hanging ring, so that the stacking height of the concrete member is reduced, the storage space is saved, meanwhile, the operation of cutting a hanging point is avoided, the construction period is shortened, and the construction difficulty and the construction cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of construction engineering, and in particular to a hoisting component for prefabricated components. Background Technology

[0002] Steel-concrete composite bridges have been widely used in transportation construction in recent years because they can fully utilize the mechanical properties of both steel and concrete. During the construction of steel-concrete composite beams, lifting points need to be set on the prefabricated concrete bridge decks in the factory to facilitate the subsequent lifting of the bridge decks and installation onto the steel main beams.

[0003] The current mainstream approach is to bend the plain round steel bars and embed part of them inside the precast concrete slab, while the other part protrudes from the surface of the precast concrete slab. The protruding part of the plain round steel bars serves as the lifting point for the precast concrete slab. Although this design meets the functional requirements to a certain extent, it still has the following problems: The steel bars protruding from the slab surface not only increase the stacking and storage height of the precast slabs, but also require additional cutting and cleaning work after the bridge deck is installed. This undoubtedly further prolongs the construction period and increases the construction difficulty and cost. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies, such as the increased stacking and storage height of prefabricated components due to the increased need for lifting points, and the subsequent need for cutting the lifting points, which leads to longer construction cycles, increased construction difficulty, and higher construction costs. This invention provides a lifting component for prefabricated components.

[0005] This utility model provides a hoisting component for prefabricated components, including:

[0006] An anchor rod, one end of which is anchored in a concrete component, and the other end of which is exposed in a groove, which is a groove on the surface of the concrete component.

[0007] The lifting ring is detachably connected to the end of the anchor rod exposed in the slot.

[0008] This invention provides a lifting component for precast components, wherein the lifting ring and the anchor rod are detachably connected. This design allows the lifting ring to be easily removed from and reinstalled on the anchor rod. The exposed portion of the anchor rod is located within a groove, which is a recess on the surface of the concrete component. Therefore, when the lifting ring is not installed, the lifting component does not protrude from the surface of the concrete component. This feature not only makes the stacking of concrete components more compact but also effectively reduces the overall stacking height, saving storage space.

[0009] When hoisting the concrete component, the lifting ring is simply attached to the anchor bolt, and then the hook is used to secure the ring for hoisting. After hoisting, the lifting ring can be easily removed from the anchor bolt, making the entire process quick and efficient.

[0010] Compared to traditional cutting and lifting point operations, this method of detachably connecting the lifting ring and the anchor bolt offers significant advantages in construction. It not only shortens the construction period and reduces construction difficulty and costs, but also provides strong support for the smooth progress of the project.

[0011] The slot can have various shapes, such as a cube, cylinder, prism, or an enlarged opening structure.

[0012] The detachable connection between the lifting ring and the anchor rod can be a threaded connection or a pin connection.

[0013] The anchor rod can be a ribbed steel bar, a plain round steel bar, or a threaded rod. The anchor rod is anchored in the concrete member, and its anchoring method can be simply direct bonding with the concrete material, or it can be further connected to the internal steel reinforcement of the concrete member by welding to enhance the stability and reliability of the anchoring.

[0014] Preferably, the system further includes spiral reinforcing bars located within the concrete member and wound around the anchor bolt. During hoisting operations, the tensile force borne by the anchor bolt is effectively dispersed and transferred to the surrounding concrete, causing the concrete area adjacent to the anchor bolt to experience a tensile or compressive mechanical state. To enhance the overall structural strength and load-bearing performance of the anchor bolt and the surrounding concrete, this design specifically adds the spiral reinforcing bars around the anchor bolt. The spiral reinforcing bars, through their unique spiral shape, enhance the crack resistance and overall stability of the concrete under stress.

[0015] Preferably, the concrete member contains reinforcing bars, and the spiral reinforcing bars are connected to the main reinforcing bars by welding. The spiral reinforcing bars can also be connected to adjacent reinforcing bars by welding. This design can prevent the spiral reinforcing bars from shifting during the pouring of the concrete member and further enhance the overall stress characteristics at the lifting point.

[0016] Preferably, the anchor bolt is connected to an anchor plate located within the concrete member. The anchor plate increases the area of ​​direct contact with the concrete; a larger contact area means greater friction between the anchor bolt and the concrete, thus providing stronger pull-out or tensile strength. The anchor plate also disperses external forces over a wider area of ​​the concrete, preventing localized concrete failure due to stress concentration, thereby improving the overall stability of the lifting point.

[0017] The anchor plate can be disc-shaped, square, or polygonal. The anchor plate and the anchor rod can be connected by welding or threading. The anchor plate can be made of forged steel or cast steel.

[0018] Preferably, the concrete protective layer of the anchor plate has a thickness of 20mm to 35mm.

[0019] Preferably, the anchor plate is disc-shaped, and the anchor plate is connected to the anchor rod by a thread. Compared with welding, the threaded connection is simpler and faster to operate, which not only improves installation efficiency but also reduces the potential problems of material deformation or stress concentration caused by welding.

[0020] Preferably, the anchor plate is made of forged steel. Compared to cast steel, forged steel has higher strength and durability.

[0021] Preferably, the slot is an enlarged opening structure, and the opening shape and bottom shape of the slot are both circular or square, and the depth of the slot is 40mm to 60mm.

[0022] Preferably, the anchor rod is a threaded rod with a diameter of 20mm to 40mm. The thread of the threaded rod can be directly used for threaded connection with the lifting ring and the anchor plate, eliminating additional processing steps and thus improving ease of use. The thread of the threaded rod can also effectively increase the contact area with the surrounding concrete, thereby enhancing the anchoring stability and effectiveness of the anchor rod by increasing friction.

[0023] Preferably, the performance grade of the threaded rod is 8.8 or 9.8. The performance grade consists of two parts, representing the nominal tensile strength and yield strength ratio of the threaded rod material. For example, a grade of 9.8 means that the nominal tensile strength of the threaded rod is 900 MPa, the yield strength ratio is 0.8, and therefore the nominal yield strength of the threaded rod is 900 × 0.8 = 720 MPa.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] 1. This utility model provides a hoisting component for precast components, which is set in the concrete component by anchor rods. The exposed part of the anchor rod is located in the groove and is detachably connected to the lifting ring. This reduces the stacking height of the concrete component, saves storage space, avoids the operation of cutting the lifting points, thereby shortening the construction cycle and reducing the construction difficulty and cost. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a hoisting component for a prefabricated component.

[0027] Figure 2 for Figure 1 A cross-sectional view along section line AA.

[0028] Figure 3 This is a top view of a hoisting component for a prefabricated part.

[0029] Marked in the image:

[0030] 1-Anchor bolt, 2-Anchor plate, 3-Helical steel bar, 4-Lifting ring, 5-Groove, 6-Steel bar, 7-Concrete component. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0032] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0034] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0035] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0036] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0037] Example 1

[0038] like Figures 1 to 3 As shown, a hoisting component for a prefabricated component includes an anchor rod 1 and a lifting ring 4.

[0039] One end of the anchor rod 1 is anchored in the concrete member 7, and the other end of the anchor rod 1 protrudes into the groove 5, which is a recess on the surface of the concrete member 7. The portion of the anchor rod 1 protruding into the groove 5 does not extend beyond the surface of the concrete member 7. Specifically, the groove 5 is located on the upper surface of the concrete member 7.

[0040] The lifting ring 4 and the anchor rod 1 are detachably connected at the end exposed in the groove 5. When the lifting ring 4 is connected to the end of the anchor rod 1 exposed in the groove 5, it may or may not extend beyond the surface of the concrete component 7. Specifically, the lifting ring 4 and the anchor rod 1 are connected by threads. The lifting ring 4 has a hole for the hook to pass through.

[0041] In an optional embodiment, a spiral reinforcing bar 3 may also be included. The spiral reinforcing bar 3 is located in the concrete member 7 and is wrapped around the anchor rod 1, enclosing the anchor rod 1 in the middle. The spiral reinforcing bar 3 may be HPB300 plain round steel bar with a diameter of 10mm.

[0042] In an optional embodiment, the concrete member 7 may be provided with reinforcing bars 6, and the spiral reinforcing bars 3 and the reinforcing bars 6 can be connected by welding. Specifically, the reinforcing bars 6 may include longitudinal reinforcing bars and transverse reinforcing bars, such as... Figure 1 As shown, the spiral steel bar 3 is located between the upper and lower layers of steel bars 6, and the upper and lower ends of the spiral steel bar 3 are connected to the adjacent steel bars 6 by welding.

[0043] In an optional embodiment, the anchor rod 1 may be connected to an anchor plate 2, which is located within the concrete member 7. Specifically, the anchor rod 1 is perpendicular to the anchor plate 2, and the anchor plate 2 is connected to the end of the anchor rod 1 away from the slot 5.

[0044] In an optional embodiment, the concrete protective layer thickness of the anchor plate 2 is 20mm to 35mm, and the specific protective layer thickness can be 20mm, 22mm, 25mm, 28mm, 30mm, or 35mm.

[0045] In an optional embodiment, the anchor plate 2 can be disc-shaped, and the anchor plate 2 and the anchor rod 1 can be connected by threads. Specifically, the anchor plate 2 can have a threaded hole in its center, and the anchor rod 1 has threads that match the threaded hole, and the anchor rod 1 is connected in the threaded hole. The diameter of the anchor plate 2 can be from 80mm to 150mm, specifically 80mm, 100mm, 120mm, or 150mm. The thickness of the anchor plate 2 can be from 15mm to 30mm, specifically 15mm, 18mm, 20mm, 25mm, or 30mm.

[0046] In an optional embodiment, the anchor plate 2 can be made of forged steel. Specifically, it can be made of 45# forged steel. More specifically, the anchor plate 2 can be of model Q36D, where Q36D specifically means a forged full anchor plate suitable for reinforcing bars or threaded rods with a nominal diameter of 36mm.

[0047] In an optional embodiment, the slot 5 can be an enlarged opening structure, with both the opening shape and the bottom shape of the slot 5 being circular or square, and the depth of the slot 5 being 40mm to 60mm. Specifically, the opening shape of the slot 5 is a square with a side length of 140mm, while its bottom shape is a square with a side length of 100mm. The centers of the two squares are aligned, and the opening gradually increases in size from the bottom surface to the opening. The depth of the slot 5 can be 40mm to 60mm, specifically 40mm, 45mm, 50mm, 55mm, or 60mm.

[0048] In an optional embodiment, the anchor rod 1 can be a threaded rod with a diameter of 20mm to 40mm, specifically 20mm, 25mm, 28mm, 30mm, 36mm, or 40mm.

[0049] In an optional embodiment, the performance grade of the threaded rod may be 8.8 or 9.8.

[0050] Specifically, the concrete component 7 has a thickness of 280mm, the anchor rod 1 is a threaded rod with a length of 248mm, the groove 5 has a depth of 40mm, the length of the threaded rod anchored in the concrete component 7 is 210mm, and the length of the threaded rod exposed in the groove 5 is 38mm. The lifting ring 4 is provided with a groove with a depth of 38mm. The groove has an internal thread structure that matches the threaded rod, so that the lifting ring 4 can be tightly and securely screwed onto the threaded rod, thereby meeting the lifting requirements.

[0051] After the concrete component 7 is installed in its designated position, the lifting ring 4 is unscrewed for reuse in subsequent lifting operations of the same concrete component 7. Subsequently, the remaining groove 5 can be backfilled and sealed using shrinkage-compensating concrete of the same grade as the concrete component 7. This step ensures that there are no exposed metal components on the concrete component 7, effectively preventing potential corrosion pathways caused by metal corrosion, which is crucial for maintaining the long-term durability and structural integrity of the concrete component 7.

[0052] Compared with the existing conventional precast slab lifting point anchoring structure, this application significantly reduces the processing and construction difficulty of related structures while achieving the lifting point anchoring function, which facilitates mass production in factories and rapid on-site installation, ensures construction safety, and improves construction quality.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hoisting component of a precast element, characterized in that include: Anchor rod (1), one end of the anchor rod (1) is anchored in the concrete component (7), and the other end of the anchor rod (1) is exposed in the groove (5), the groove (5) being a groove on the surface of the concrete component (7); The lifting ring (4) and the anchor rod (1) are detachably connected at one end exposed in the slot (5).

2. A hoisting assembly for precast members as defined in claim 1, characterized in that It also includes a spiral steel bar (3) located in the concrete member (7) and wrapped around the anchor rod (1).

3. A hoisting assembly for precast members as defined in claim 2, wherein The concrete component (7) is provided with reinforcing bars (6), and the spiral reinforcing bars (3) are connected to the reinforcing bars (6) by welding.

4. A hoisting assembly for precast members as defined in claim 1, wherein The anchor rod (1) is connected to an anchor plate (2), which is located in the concrete member (7).

5. The hoisting component for a prefabricated component according to claim 4, characterized in that, The concrete protective layer of the anchor plate (2) is 20mm to 35mm thick.

6. The hoisting component for a prefabricated component according to claim 4, characterized in that, The anchor plate (2) is disc-shaped, and the anchor plate (2) is connected to the anchor rod (1) by a thread.

7. The hoisting component for a prefabricated component according to claim 4, characterized in that, The anchor plate (2) is made of forged steel.

8. A hoisting component for a precast component according to any one of claims 1-7, characterized in that, The slot (5) is an enlarged opening structure. The opening shape and bottom shape of the slot (5) are both circular or square. The depth of the slot (5) is 40mm to 60mm.

9. A hoisting component for a prefabricated component according to claim 8, characterized in that, The anchor rod (1) is a threaded rod with a diameter of 20mm to 40mm.

10. A hoisting component for a prefabricated component according to claim 9, characterized in that, The performance grade of the threaded rod is 8.8 or 9.8.

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