Demountable lifting device for cast-in-place pile reinforcement cage

Abstract

This utility model belongs to the field of building construction technology, specifically providing a detachable lifting rod device for cast-in-place pile reinforcement cages. It includes multiple lifting rod assemblies, symmetrically or at equal intervals. Each lifting rod assembly includes a lifting rod, a fixed support, and a pin. A lifting ring is provided at the top of the lifting rod. The fixed support is fixedly installed at the bottom of the lifting rod, with a pin hole at one end. The fixed support passes through the bottom of the reinforcing rib and engages with the pin. Multiple movable supports are also spaced apart on the lifting rod. The end of each movable support away from the lifting rod has a connecting hole that engages with the pin. The axes of the multiple connecting holes and the pin holes are aligned on the same straight line. The movable supports pass through the bottom of the reinforcing rib and engage with the pin. This utility model, through the arrangement of multiple movable supports and connecting holes, can increase the contact area between the lifting rod assembly and the reinforcement cage, preventing damage to the overall structure of the reinforcement cage due to localized stress. It also improves the stability of the hoisting process and reduces safety risks.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and to a detachable lifting device for the reinforcing cage of cast-in-place piles. Background Technology

[0002] In the traditional construction of bored piles, the lifting bars are usually welded directly to the steel cage. This not only damages the overall structure of the steel cage, but also means that the lifting bars cannot be reused.

[0003] The utility model patent with announcement number CN205776169U discloses a lifting bar device for cast-in-place pile steel cages, which solves the problem that lifting bars cannot be reused in traditional construction. However, the lifting bar is only connected to the first reinforcing bar at the top of the steel cage. Due to the limited contact area, the first reinforcing bar is prone to displacement or deformation, thereby damaging the overall structure. At the same time, it cannot effectively ensure the stability of the hoisting and there is a certain hoisting risk. Utility Model Content

[0004] To address the technical problems in the prior art, this utility model provides a detachable lifting bar device for cast-in-place pile reinforcement cages, comprising multiple lifting bar assemblies detachably installed with the reinforcing bars in the reinforcement cage. These lifting bar assemblies are symmetrically or equally spaced. Each lifting bar assembly includes a lifting bar, a fixed support, and a pin. A lifting ring is provided at the top of the lifting bar. The fixed support is fixedly installed at the bottom of the lifting bar and vertically connected to it. The end of the fixed support away from the lifting bar has a pin hole that mates with the pin. The fixed support passes through the bottom of the reinforcing bar and mates with the pin. Multiple movable supports are also spaced apart on the lifting bar, installed between the fixed support and the lifting ring. The end of each movable support away from the lifting bar has a connecting hole that mates with the pin. The axes of the multiple connecting holes and the pin holes are on the same straight line. The movable supports pass through the bottom of the reinforcing bar and mate with the pin.

[0005] Furthermore, the movable support is slidably connected to the suspension rod and locked by bolts.

[0006] Furthermore, the connecting hole is a tapered hole, and the top dimension of the tapered hole is larger than the diameter of the pin rib.

[0007] Furthermore, the lifting rod is installed inside the reinforcing cage, while the pin is located outside the reinforcing cage.

[0008] Furthermore, the suspension rod assembly comprises three, and the three suspension rod assemblies are distributed at equal intervals.

[0009] Furthermore, a limiting plate can be detachably installed on the side of two adjacent suspension rods that are close to each other, and the limiting plate is located at one end near the top of the suspension rod assembly.

[0010] Beneficial effects: 1. In this utility model, the arrangement of multiple movable support members and connecting holes increases the contact area between the lifting rod assembly and the reinforcing cage, preventing the reinforcing cage from being damaged due to localized stress. It also improves the stability of the hoisting process and reduces safety risks. Specifically, during installation, the fixed support members and multiple movable support members are first connected to the reinforcing ribs at different heights of the reinforcing cage to ensure effective contact between them. At this point, the weight of the reinforcing cage is borne by multiple reinforcing ribs. Then, the pin rod is passed through multiple connecting holes and pin holes from top to bottom, extending appropriately beyond the pin holes. After hoisting is completed, the pin rod is pulled out from above, and the lifting rod is moved horizontally a short distance away from the reinforcing ribs before being removed upwards.

[0011] 2. In this utility model, the movable support is slidably connected to the reinforcing bar, and the relative height of the movable support can be adjusted by the setting of bolt locking, so as to ensure that each movable support can effectively support each reinforcing bar, and to ensure that the force on each movable support is equal or nearly equal. At the same time, it can adapt to the installation requirements of steel cages of different sizes. Specifically, when the spacing of the reinforcing bars of the steel cage is different, it can be adjusted and matched by sliding the corresponding movable support.

[0012] 3. In this utility model, the tapered design of the connecting hole facilitates the insertion of the pin reinforcement into the connecting hole, improving installation efficiency. It also reduces the gap between the pin reinforcement and the connecting hole 8, thereby preventing the pin reinforcement from shaking. The installation of the lifting rod inside the steel cage ensures sufficient operating space and facilitates the disassembly of the lifting rod assembly and the steel cage.

[0013] 4. In this utility model, the setting of three equally spaced lifting rod assemblies can improve the connection strength and stability between the lifting rod assemblies and the steel cage, and further reduce safety risks; the setting of the limiting plate can restrict the relative position between the three lifting rod assemblies, avoid displacement during hoisting, and further improve the stability of hoisting. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall installation structure of this utility model; Figure 2 This is a schematic diagram of the suspension rod assembly of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Reinforcing rib; 2. Hanging rib; 3. Fixed support; 4. Pin rib; 5. Lifting ring; 6. Pin hole; 7. Movable support; 8. Connecting hole; 9. Limiting plate. Detailed Implementation

[0017] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] This utility model provides a detachable lifting device for the reinforcing cage of cast-in-place piles, such as... Figure 1 and Figure 2 As shown, the system includes multiple lifting rod assemblies that are detachably installed with the reinforcing bars 1 in the steel cage. These lifting rod assemblies are symmetrically or equally spaced. Each lifting rod assembly includes a lifting rod 2, a fixing support 3, and a pin 4. The top of the lifting rod 2 is provided with a lifting ring 5. The fixing support 3 is fixedly installed at the bottom of the lifting rod 2 and is vertically connected to it. The end of the fixing support 3 away from the lifting rod 2 has a pin hole 6 that mates with the pin 4. The fixing support 3 passes through the bottom of the reinforcing bar 1 and mates with the pin 4. Multiple movable... Support member 7, multiple movable support members 7 are installed between fixed support member 3 and lifting ring 5. The end of the movable support member 7 away from the lifting rod 2 is provided with a connecting hole 8 that mates with the pin rod 4. The axes of multiple connecting holes 8 and pin holes 6 are on the same straight line. The movable support member 7 passes through the bottom of the reinforcing rib 1 and mates with the pin rod 4. Multiple movable support rods 7 can mate with the reinforcing rib 1 at equal intervals, or they can be staggered according to the stress conditions or site requirements. The inner diameter of the pin hole 6 and the connecting hole 8 is larger than the diameter of the pin rod 4 to facilitate their mating.

[0024] In this embodiment, the arrangement of multiple movable support members 7 and connecting holes 8 can increase the contact area between the lifting rod assembly and the reinforcing cage, preventing the reinforcing cage from being damaged due to local stress. At the same time, it can improve the stability of hoisting and reduce safety risks. Specifically, during installation, the fixed support member 3 and multiple movable support members 7 are first connected to the reinforcing ribs 1 at different heights of the reinforcing cage to ensure that the fixed support member 3 and multiple movable support members 7 can effectively contact the corresponding reinforcing ribs 1. At this time, the weight of the reinforcing cage is borne by multiple reinforcing ribs 1. Then, the pin rod 4 is passed through multiple connecting holes 8 and pin holes 6 from top to bottom, and extends appropriately beyond the pin holes 6. After hoisting is completed, the pin rod 4 is pulled out from the top, and then the lifting rod 2 is moved horizontally to the side away from the reinforcing rib 1 by a small displacement before being taken out upward.

[0025] In this utility model, preferably, such as Figure 2 As shown, the movable support 7 is slidably connected to the suspension rod 2 and is locked by bolts.

[0026] In this embodiment, the movable support 7 is slidably connected to the lifting rod 2, and the relative height of the movable support 7 can be adjusted by the setting of bolt locking, so as to ensure that each movable support 7 can effectively support each reinforcing rod 1, and to ensure that the force on each movable support 7 is equal or nearly equal. At the same time, it can adapt to the installation requirements of steel cages of different sizes. Specifically, when the spacing of the reinforcing rods 1 of the steel cage is different, it can be adjusted and matched by sliding the corresponding movable support 7.

[0027] In this utility model, preferably, such as Figure 2 As shown, the connecting hole 8 is a tapered hole, and the top dimension of the tapered hole is larger than the diameter of the pin rib 4, while the bottom dimension is slightly larger than the diameter of the pin rib 4.

[0028] In this embodiment, by making the connecting hole 8 a tapered hole, it is possible to easily insert the pin rib 4 into the connecting hole 8, thereby improving installation efficiency. At the same time, it can also reduce the gap between the pin rib 4 and the connecting hole 8, thereby preventing the pin rib 4 from shaking.

[0029] In this utility model, preferably, such as Figure 1 and Figure 2 As shown, the lifting bar 2 is installed inside the steel cage, and the pin bar 4 is located outside the steel cage.

[0030] In this embodiment, the installation of the lifting rod 2 inside the steel cage ensures sufficient operating space and facilitates the disassembly of the lifting rod assembly and the steel cage.

[0031] In this utility model, preferably, such as Figure 1As shown, the suspension rod assembly includes three, which are evenly spaced; a limiting plate 9 is detachably installed on the side of two adjacent suspension rods 2 that are close to each other, and the limiting plate 9 is located at one end near the top of the suspension rod assembly.

[0032] In this embodiment, the connection strength and stability between the lifting rod assembly and the steel cage can be improved by setting three equally spaced lifting rod assemblies, thereby further reducing safety risks; the relative position between the three lifting rod assemblies can be restricted by setting the limiting plate 9, thereby preventing displacement during the hoisting process and further improving the stability of the hoisting.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A detachable lifting bar device for a cast-in-place pile reinforcement cage, comprising multiple lifting bar assemblies detachably installed with reinforcing bars (1) in the reinforcement cage, wherein the multiple lifting bar assemblies are symmetrically or equally spaced, each lifting bar assembly includes a lifting bar (2), a fixed support (3), and a pin bar (4), wherein the top of the lifting bar (2) is provided with a lifting ring (5), the fixed support (3) is fixedly installed at the bottom of the lifting bar (2) and is vertically connected to the lifting bar (2), and the fixed support (3) has a pin hole (6) at one end away from the lifting bar (2) that cooperates with the pin bar (4), wherein the fixed support (3) passes through the bottom of the reinforcing bar (1) and cooperates with the pin bar (4), characterized in that, The lifting rod (2) is also provided with multiple movable support members (7) at intervals. The multiple movable support members (7) are installed between the fixed support member (3) and the lifting ring (5). The end of the movable support member (7) away from the lifting rod (2) is provided with a connecting hole (8) that cooperates with the pin rod (4). The axes of the multiple connecting holes (8) and the pin hole (6) are on the same straight line. The movable support member (7) passes through the bottom of the reinforcing rib (1) and cooperates with the pin rod (4).

2. The detachable lifting device for the reinforcing cage of a cast-in-place pile according to claim 1, characterized in that, The movable support (7) is slidably connected to the suspension rod (2) and locked by bolts.

3. The detachable lifting device for the reinforcing cage of a cast-in-place pile according to claim 2, characterized in that, The connecting hole (8) is a tapered hole, and the top dimension of the tapered hole is larger than the diameter of the pin rib (4).

4. The detachable lifting device for the reinforcing cage of a cast-in-place pile according to claim 3, characterized in that, The lifting bar (2) is installed inside the steel cage, and the pin bar (4) is located outside the steel cage.

5. The detachable lifting device for the reinforcing cage of a cast-in-place pile according to any one of claims 1 to 4, characterized in that, The suspension rod assembly comprises three components, which are distributed at equal intervals.

6. The detachable lifting device for the reinforcing cage of a cast-in-place pile according to claim 5, characterized in that, A limiting plate (9) can be detachably installed on the side of two adjacent suspension rods (2) that are close to each other, and the limiting plate (9) is located at one end near the top of the suspension rod assembly.

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