A prefabricated wall body protruding bending steel bar fixing device

Abstract

This utility model relates to the field of prefabricated building technology, specifically disclosing a device for fixing protruding bent steel bars in prefabricated walls. It includes a mold base plate, on which a grouting mold groove is formed by three L-shaped side molds, opening at one end and arranged in a rectangular shape. A U-shaped side mold is located at the opening end of the grouting mold groove. Multiple aligned vertical slots are spaced apart on both sides of the U-shaped side mold. Multiple horizontal wall steel bars and protruding bent steel bars are arranged crisscrossingly in the grouting mold groove. Both ends of the horizontal wall steel bars are connected to two opposing L-shaped side molds, and one end of the protruding bent steel bar is connected to another L-shaped side mold. The other end of the protruding bent steel bar passes through two vertical slots on the U-shaped side mold, and the bent portion of the protruding bent steel bar is located inside the U-shaped side mold. This utility model has low modification cost, simple structure, and high practicality. It is also easy to operate, making the manufacturing process of prefabricated walls simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, and specifically discloses a device for fixing bent steel bars extending from prefabricated walls. Background Technology

[0002] With the advancement of industrialized construction, prefabricated buildings are widely used due to their significant advantages in energy conservation and emission reduction, industrialized production, and improved construction efficiency. Prefabricated buildings are mainly constructed by assembling prefabricated components on-site. These components are produced in factories using molds of corresponding sizes. In some prefabricated components, the protruding reinforcing bars need to be bent or hooked to connect with adjacent components. However, during production, factors such as improper worker handling, trampling, and concrete vibration can alter the direction of the hooks or bends in the protruding reinforcing bars, affecting later installation, causing construction difficulties, delaying progress, and increasing costs.

[0003] Patent application number 202110211267.5 discloses a method for fixing exposed rebar in composite slabs and a dedicated fixing device. The fixing device includes a pad beam positioned below the exposed rebar, with a steel plate on the pad beam pressing against the exposed rebar. Steel plate fixing devices are located at both ends of the steel plate, each equipped with a strong magnet. It also includes a sliding beam parallel to the pad beam, with both ends of the sliding beam fixed to the ends of the pad beam via connecting seats. A slider is mounted on the sliding beam, with pins on the sides of the slider and a U-shaped steel bar at the top. Two vertical ribs of the U-shaped steel bar extend upwards and clamp the curved portion of the exposed rebar on both sides. While this invention effectively fixes the exposed rebar, preventing the curved portion of the rebar from skewing and effectively improving production efficiency and composite slab quality, the design of this dedicated fixing device is overly complex. After the mold is installed, the fixing device needs to be installed and adjusted to fix the curved portion of the exposed rebar, making the composite slab preparation process cumbersome. Therefore, in view of the shortcomings of the prior art, this application proposes a device for fixing the protruding bent steel bars of precast walls. Utility Model Content

[0004] The purpose of this utility model is to provide a device for fixing the bent steel bars extending from the precast wall, thereby achieving a simple way to fix the bent part of the steel bars during the precast wall production process, preventing its position from changing or becoming skewed, and thus ensuring the quality of the final precast wall panel.

[0005] This utility model is achieved through the following technical solution:

[0006] A precast wall protruding bent steel bar fixing device includes a formwork base plate. The formwork base plate is provided with a grouting mold groove formed by three L-shaped side molds and having an open end and a rectangular shape. The open end of the grouting mold groove is provided with a U-shaped side mold. Multiple vertical grooves aligned with each other are spaced apart on both sides of the U-shaped side mold. Multiple horizontal wall steel bars and protruding bent steel bars are arranged crisscrossingly in the grouting mold groove. The two ends of the horizontal wall steel bars are connected to two opposite L-shaped side molds. One end of the protruding bent steel bar is connected to another L-shaped side mold. The other end of the protruding bent steel bar passes through two vertical grooves on the U-shaped side mold, and the bent part of the end of the protruding bent steel bar is located inside the U-shaped side mold.

[0007] As a further feature of the above scheme, both the L-shaped side mold and the U-shaped side mold are fixedly connected to the upper surface of the mold base plate by bolts.

[0008] As a further feature of the above scheme, the width of the vertical groove is greater than the diameter of the extended bent steel bar, and the width of the vertical groove does not exceed 5mm of the diameter of the bent steel bar.

[0009] As a further feature of the above scheme, the distance between the two sides of the U-shaped side mold is greater than the length of the bent portion at the end of the extended bent steel bar.

[0010] As a further feature of the above scheme, the base plate of the mold platform is a steel template, and bolt holes for connecting the L-shaped side mold and the U-shaped side mold are provided on the base plate of the mold platform.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This utility model improves upon the traditional precast component side mold by using only a U-shaped side mold to replace the traditional L-shaped side mold. Vertical slots are opened on the U-shaped side mold. After the bent part of the extended and bent steel bar ends passes through the vertical slots and is located in the U-shaped side mold, the steel bar can be effectively prevented from rotating by two-point fixing, thus completing the fixing of the steel bar. Its overall modification cost is low, the structure is simple, and it has high practicality.

[0013] When fixing the protruding bent steel bars, this utility model directly passes the bent part through the vertical slots on both sides of the U-shaped side mold without any extra processing. It can also be quickly removed after the precast wall is prepared, making the manufacturing process of the precast wall simple and convenient, and easy to operate. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the U-shaped side mold in this utility model;

[0017] Figure 3 This is a schematic diagram of the planar structure of the bending part located inside the U-shaped side mold in this utility model. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-3 This application will be described in detail with reference to the embodiments. Example 1

[0020] Example 1 discloses a precast wall protruding bent steel bar fixing device, including a mold base plate 1, which is a steel template and has bolt holes at corresponding connection positions to facilitate later installation and connection with the mold edge plate.

[0021] Three traditional L-shaped side molds 2 are set on the upper surface of the mold base plate 1, and the L-shaped side molds 2 are fixed to the mold base plate 1 with bolts, thus forming a rectangular groove with one end open. A U-shaped side mold 3 is also fixedly connected to the open end of the rectangular groove with bolts, so that the three L-shaped side molds 2 and the U-shaped side mold 3 form a rectangular grouting mold groove for pouring concrete to prepare precast walls. Multiple horizontal wall reinforcement bars 4 and protruding bent reinforcement bars 5 are arranged in a crisscross pattern in the grouting mold groove, and the bent ends of the protruding bent reinforcement bars 5 extend from one side of the U-shaped side mold 3.

[0022] Multiple vertical slots 301 for the protruding bent steel bar 5 are spaced apart on both the left and right sides of the U-shaped side mold 3, and the vertical slots 301 on both sides are aligned one by one. The width of each vertical slot 301 is slightly larger than the diameter of the protruding bent steel bar 5, typically controlled to be within 5mm of the diameter of the bent steel bar. Furthermore, in the design of the U-shaped side mold 3, the distance between its left and right sides is greater than the length of the bent portion of the protruding bent steel bar 5, so that the bent portion 501 of the bent steel bar 5 can be located inside the U-shaped side mold 3, thereby preventing the bent steel bar 2 from rotating.

[0023] The specific operating steps of the precast wall protruding bent steel bar fixing device disclosed in Embodiment 1 are as follows:

[0024] S1: Select L-shaped side molds 2 and U-shaped side molds 3 of appropriate length according to the precast wall, and then fix the three L-shaped side molds 2 and U-shaped side molds 3 to the upper surface of the mold base plate 1 by bolts or other connecting parts, thereby forming a rectangular grouting mold groove.

[0025] S2: The horizontal reinforcing bars 4 of the wall are arranged longitudinally between two opposite L-shaped side molds 2, and the protruding bent reinforcing bars 5 are arranged transversely between another L-shaped side mold 2 and a U-shaped side mold 3, so that one end of the protruding bent reinforcing bar 5 extends out of the vertical grooves 301 on both sides at the corresponding position, and the bent part 501 of the bent reinforcing bar 5 is located inside the U-shaped side mold 3.

[0026] S3: After the horizontal steel bars 4 and the extended bent steel bars 5 of the wall are arranged, pour concrete into the grouting mold groove. After it has solidified and formed, remove the L-shaped side mold 2 and the U-shaped side mold 3 to take out the precast wall.

[0027] The above are merely preferred embodiments of the present utility model and are 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 device for fixing protruding bent steel bars in precast walls, comprising a formwork base plate, characterized in that, The base plate of the mold platform is provided with a grouting mold groove formed by three L-shaped side molds and opening at one end in a rectangular shape. The opening end of the grouting mold groove is provided with a U-shaped side mold. On both sides of the U-shaped side mold, there are multiple vertical grooves that are aligned with each other. Multiple horizontal wall reinforcement bars and protruding bent reinforcement bars are arranged in a crisscross pattern in the grouting mold groove. The two ends of the horizontal wall reinforcement bars are connected to two opposite L-shaped side molds. One end of the protruding bent reinforcement bar is connected to another L-shaped side mold. The other end of the protruding bent reinforcement bar passes through two vertical grooves on the U-shaped side mold, and the bent part of the end of the protruding bent reinforcement bar is located inside the U-shaped side mold.

2. The precast wall protruding bent steel bar fixing device according to claim 1, characterized in that, Both the L-shaped and U-shaped side molds are fixedly connected to the upper surface of the mold base plate by bolts.

3. The precast wall protruding bent steel bar fixing device according to claim 1, characterized in that, The width of the vertical groove is greater than the diameter of the extended bent steel bar, and the width of the vertical groove does not exceed 5mm of the diameter of the bent steel bar.

4. The precast wall protruding bent steel bar fixing device according to claim 1, characterized in that, The distance between the two sides of the U-shaped side mold is set to be greater than the length of the bent portion at the end of the extended bent steel bar.

5. The precast wall protruding bent steel bar fixing device according to claim 1, characterized in that, The base plate of the mold platform is a steel template, and bolt holes for connecting the L-shaped side mold and the U-shaped side mold are provided on the base plate of the mold platform.

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