Modular pile head steel bar positioning mould

Abstract

The utility model discloses a modularization pile head reinforcing steel bar positioning mould, including upper layer disc, lower layer disc and a plurality of support bars between upper layer disc and lower layer disc, a plurality of support bars with upper layer disc, lower layer disc between respectively through detachable connection, the diameter of upper layer disc is greater than the diameter of lower layer disc, and the center of upper layer disc and the center of lower layer disc are located on same vertical line, the periphery of upper layer disc, lower layer disc is respectively evenly provided with a plurality of tooth grooves, and the tooth number on upper layer disc, lower layer disc is same and one -to -one corresponding. The modularization pile head reinforcing steel bar positioning mould provided by the utility model not only can effectively improve pile head reinforcing steel bar installation quality, but also can effectively avoid the construction error caused by artificial factor, and is favorable to improving construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steel reinforcement construction technology, and in particular to a modular pile head steel reinforcement positioning jig. Background Technology

[0002] In construction engineering, pile foundations are a common type of foundation. The pile head reinforcement, as a key component connecting the pile body to the superstructure's pile cap, directly impacts structural safety through its construction quality. The "trumpet-shaped" bending of the pile head reinforcement is a crucial step in pile cap construction. Traditional methods rely on manual tying or simple supports, which have the following drawbacks: 1. Traditional pile head reinforcement positioning using manual tying or temporary supports results in poor positioning accuracy, easily leading to uneven reinforcement spacing and large vertical deviations; 2. Manual positioning is inefficient, requiring repeated adjustments for each pile head, necessitating at least two people and 20 minutes of operation, and relying heavily on skilled workers; 3. Temporary supports have poor stability and are prone to displacement during concrete pouring, causing reinforcement misalignment; 4. The lack of reliable positioning devices makes it easy for the center deviation of the pile head reinforcement to exceed specifications, resulting in substandard pile head reinforcement. With the increasing demand for standardization in bridge engineering, an efficient and precise positioning device is urgently needed. Furthermore, with the increasing requirements for green construction and industrialized construction, the inefficiency of traditional construction methods is becoming increasingly prominent, while the market urgently needs standardized and modular steel formwork. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a modular pile head reinforcement positioning jig, which can not only effectively improve the installation quality of pile head reinforcement, but also effectively avoid construction errors caused by human factors, thus improving construction efficiency.

[0004] The technical solution provided by this utility model is as follows:

[0005] A modular pile head rebar positioning jig includes an upper disc, a lower disc, and several support rods disposed between the upper and lower discs. The support rods are detachably connected to the upper and lower discs respectively. The diameter of the upper disc is larger than that of the lower disc. The center of the upper disc and the center of the lower disc are located on the same vertical line. Several teeth are evenly provided on the outer periphery of the upper and lower discs respectively. The number of teeth on the upper and lower discs is the same and corresponds one-to-one.

[0006] Preferably, the support rod is connected to the upper and lower discs by a socket-type connection, and the upper and lower discs are respectively provided with a number of sockets.

[0007] Preferably, a lifting ring handle is fixedly provided on the upper disc.

[0008] Preferably, the support rod is a telescopic rod with adjustable length.

[0009] Preferably, a laser emitter is provided at the top of the support rod.

[0010] Preferably, the upper disk and the lower disk are provided with circular holes in their middle portions.

[0011] This invention has the following advantages over the prior art:

[0012] 1. High efficiency: The modular pile head rebar positioning jig of this utility model can be reused. It is lightweight and easy to disassemble. Compared with the integral steel formwork, it saves more than 60% of material costs. Moreover, the modular design facilitates transportation and storage and saves site space.

[0013] 2. Improved precision: The modular pile head rebar positioning jig of this utility model uses a toothed groove structure for mechanical limiting, which can ensure that the rebar spacing error is ≤1mm and the bending angle deviation is ≤1°.

[0014] 3. Accelerated construction: By adopting the modular pile head rebar positioning jig of this utility model, a single person can complete the assembly and disassembly of a single positioning jig within 5 minutes, which is twice as efficient as the existing integral steel formwork construction and shortens the construction period by about 10%. Attached Figure Description

[0015] 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 some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the modular pile head reinforcement positioning jig in Embodiment 1 of this utility model;

[0017] Figure 2 This is a schematic diagram of the modular pile head reinforcement positioning jig in Embodiment 2 of this utility model.

[0018] Figure label:

[0019] 1. Upper disc; 2. Lower disc; 3. Support rod; 4. Gear groove; 5. Circular hole; 6. Lifting ring handle; 7. Laser emitter. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Example 1:

[0022] like Figure 1 As shown, this utility model embodiment provides a modular pile head rebar positioning jig, including an upper disc 1, a lower disc 2, and a plurality of support rods 3 disposed between the upper disc 1 and the lower disc 2. The diameter of the upper disc 1 is larger than the diameter of the lower disc 2. The center of the upper disc 1 and the center of the lower disc 2 are located on the same vertical line. A plurality of teeth 4 are uniformly provided on the outer periphery of the upper disc 1 and the lower disc 2, and the number of teeth 4 on the upper disc 1 and the lower disc 2 is the same and corresponds one-to-one.

[0023] In this embodiment, the upper disc 1 and the lower disc 2 are both formed by stamping 8mm thick Q355B steel plates. The middle portions of both discs have circular holes 5, which saves material and reduces weight. This embodiment uses a double-layer disc + toothed groove structure to accommodate different pile diameters (e.g., it can be customized to a standard pile diameter series of φ600-2000mm). The toothed groove 4 ensures a spacing error ≤2mm and a bending angle deviation ≤1°. Furthermore, this embodiment provides a double-layer disc and toothed groove structure, which improves the accuracy of the pile head reinforcement bell mouth positioning.

[0024] The modular pile head reinforcement positioning jig in this embodiment adopts an adaptability design: it provides a double-layer disc and toothed groove structure. Taking a pile diameter of φ1000mm and main reinforcement of φ25mm as an example, the disc size is: the diameter of the upper disc 1 = 1000mm + 2 × 150mm (flare mouth extension) = 1300mm. The toothed groove parameters are: groove width 27mm (25mm + 2mm), spacing 157mm (20 main reinforcements are evenly distributed around the circumference).

[0025] In this embodiment, the support rod 3 is connected to the upper disk 1 and the lower disk 2 by a socket connection method, which can be installed within 5 minutes without the need for large machinery. The upper disk and the lower disk are respectively provided with several sockets to ensure vertical alignment during splicing with an error of ≤1mm.

[0026] In this embodiment, a lifting handle 6 is fixed on the upper disc 1 for easy disassembly.

[0027] In this embodiment, the support rod 3 is a telescopic rod with adjustable length, such as a φ50mm telescopic rod with adjustable length (the length can be fixed after adjustment) that has been disclosed in the prior art. The rod body of the support rod 3 is galvanized, which provides stable support.

[0028] The process steps for using the modular pile head reinforcement positioning jig in this embodiment are as follows:

[0029] 1. Pile head treatment: Remove the laitance at the top of the pile to expose the fresh concrete surface, measure and set out, and mark the center point and design elevation of the pile foundation;

[0030] 2. Fixture positioning and assembly: Insert the support rod 3 into the socket of the lower disc 2 and adjust the height to the design position; install the upper disc 1, align it with the center of the pile foundation using the center pointer and lock it in place; check the orientation of the tooth groove 4 and the design reinforcement arrangement. Figure 1 To;

[0031] 3. Reinforcing bar positioning: Insert the main reinforcing bars of the pile head into the toothed groove one by one, bend them to the "trumpet mouth" design angle (usually 45° or 60°), and tie the stirrups to fix the reinforcing bar cage;

[0032] 4. Fixture removal and turnover: Loosen the pins, remove the upper disc 1 and support rod 3 in sequence, clean them up and then turnover them to the next pile position.

[0033] The modular pile head reinforcement positioning jig of this embodiment is suitable for the construction of the flared joint at the connection between pile foundations and abutments in industrial and civil buildings, bridge engineering, and other fields, improving the work efficiency. Taking the construction of 100 pile foundations as an example, using the modular pile head reinforcement positioning jig of this embodiment can save approximately 20,000 yuan in costs and shorten the construction period by 8 days compared to traditional wooden formwork.

[0034] Example 2:

[0035] like Figure 2 As shown, the difference between this embodiment and embodiment 1 is that: the top of the support rod 3 is equipped with a laser emitter 7 to form a positioning reference surface and the center of the pile: the manual centering process is automated, and the center positioning accuracy reaches ±0.5mm. The rest of the structure is the same as that of embodiment 1.

[0036] 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 modular pile head reinforcement positioning jig, characterized in that, It includes an upper disk, a lower disk, and several support rods disposed between the upper and lower disks. The support rods are detachably connected to the upper and lower disks respectively. The diameter of the upper disk is larger than that of the lower disk. The center of the upper disk and the center of the lower disk are located on the same vertical line. Several toothed grooves are evenly provided on the outer periphery of the upper and lower disks respectively. The upper and lower disks have the same number of toothed grooves and correspond one-to-one.

2. The modular pile head reinforcement positioning jig according to claim 1, characterized in that, The support rod is connected to the upper and lower discs by a socket-type connection, and the upper and lower discs are respectively provided with a number of sockets.

3. The modular pile head reinforcement positioning jig according to claim 1, characterized in that, The upper disc is fixed with a lifting ring handle.

4. The modular pile head reinforcement positioning jig according to any one of claims 1-3, characterized in that, The support rod is a telescopic rod with adjustable length.

5. The modular pile head reinforcement positioning jig according to any one of claims 1-3, characterized in that, A laser emitter is located at the top of the support rod.

6. The modular pile head reinforcement positioning jig according to any one of claims 1-3, characterized in that, The upper and lower disks each have a circular hole in the middle.

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