Bending rod applied to laminated slab horizontal reinforcing bar construction
By designing a bending rod suitable for composite slab construction, the problem of difficult repositioning of reinforcing bars in narrow spaces was solved, enabling flexible bending and repositioning operations, improving construction efficiency and safety, and applicable to reinforcing bars of various sizes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-03-17
AI Technical Summary
In the construction of composite slabs, existing bending rods are difficult to reposition significantly in narrow spaces, affecting construction efficiency and convenience.
A bending rod is designed, comprising a rod body, a bending assembly, and a reset head. The bending assembly consists of a bending groove formed by two first bending heads to accommodate the beard fascia. The reset head is hook-shaped, enabling flexible bending and reset of the beard fascia in narrow spaces.
It enables flexible bending and repositioning of the tendon in confined spaces, improving construction efficiency and convenience. It is suitable for tendons of various sizes, enhancing operational flexibility and safety.
Smart Images

Figure CN223997169U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and more specifically, to a bending rod used in the construction of reinforcing bars for composite slabs. Background Technology
[0002] Composite slabs are a widely used component in prefabricated buildings. They consist of precast slabs and a cast-in-place reinforced concrete layer. The precast slabs are typically manufactured in a factory, are relatively thin, and have a roughened surface, possibly with reinforcing steel trusses for added rigidity. On the construction site, the precast slabs are installed in place, and then the cast-in-place reinforced concrete layer is poured on top. These two layers are tightly bonded together as a whole by pre-installed reinforcing bars on the precast slabs, sharing the load. Composite slabs offer advantages such as fast construction speed, stable quality, and reduced formwork requirements, effectively improving construction efficiency and quality.
[0003] In the construction of composite slabs, the prefabricated components are typically installed first. These prefabricated slabs often include reinforcing steel trusses to enhance structural stability. Subsequently, a cast-in-place reinforced concrete layer is poured on-site, tightly integrating the prefabricated and cast-in-place components into a unified whole. However, during construction, if the installation position of the composite slab conflicts with the reinforcing steel of other structural members, or to meet specific installation space and connection requirements, the reinforcing steel trusses need to be bent. Furthermore, after the composite slab is installed in place, the reinforcing steel trusses must be repositioned.
[0004] In existing technologies, bending rods are commonly used to bend and reposition reinforcing ribs. A bending rod mainly consists of a rod body, a handle, and a bending die with grooves, with the handle and bending die located at opposite ends of the rod body. In practice, the grooves of the bending die are matched with the reinforcing rib, and then the handle is used to bend or reposition the rib. However, once the composite slab is installed, if the operating space is relatively narrow, the bending rod cannot perform a large-scale repositioning operation, leading to inconvenience in repositioning. This causes some inconvenience in construction, affecting construction efficiency and ease of operation. Utility Model Content
[0005] The purpose of this utility model is to provide a bending rod for the construction of reinforcing bars in composite slabs, aiming to solve the technical problems in the background art mentioned above.
[0006] The technical solution of this utility model is implemented as follows:
[0007] This application provides a bending rod for use in the construction of reinforcing bars in composite slabs, comprising:
[0008] shaft;
[0009] A bending assembly includes two first bending heads disposed at the first end of the rod body, and the two first bending heads are spaced apart to form first bending grooves for accommodating reinforcing bars; and
[0010] The reset head is hook-shaped and is located at the second end of the aforementioned rod.
[0011] A further technical solution is that the diameter of the first bending groove gradually increases in the direction away from the rod body.
[0012] A further technical solution is to include a second bending head disposed at the first end of the aforementioned pole body, wherein the two aforementioned first bending heads are arranged in a triangular distribution.
[0013] In this configuration, any of the first bends and the second bends together form a second bend groove, the diameter of which gradually increases in the direction away from the rod body.
[0014] A further technical solution is that one end of the reset head is provided with a threaded post, and the rod body is provided with a threaded groove that is adapted to the threaded post.
[0015] A further technical solution is that the bending rod also includes a handle and an arc plate, one end of which is connected to the outer ring surface of the handle, and the other end extends to the outside of the handle and forms a groove with the handle.
[0016] The aforementioned rod body includes a first rod body and a second rod body, which are connected by the aforementioned handle. The aforementioned first bending head and the aforementioned second bending head are both disposed on the aforementioned first rod body, and the aforementioned reset head is disposed on the aforementioned second rod body.
[0017] A further technical solution is to provide a support column inside the groove to connect the arc-shaped plate and the handle.
[0018] A further technical solution is that both the aforementioned grip and the aforementioned curved plate are provided with anti-slip textures.
[0019] Compared with the prior art, the technical solution of this utility model has at least the following advantages or beneficial effects:
[0020] During the bending operation of this bending rod, the reinforcing bar is aligned with the bending groove, allowing it to abut against the two first bending heads. Force is then applied to the rod body to rotate it, thus bending the reinforcing bar. Afterward, the composite plate can be installed and positioned. During the resetting operation, the hook of the resetting head catches the bent reinforcing bar, and pulling forcefully resets it. The movement path of the rod body is approximately along its axis. Compared to traditional rotary-press resetting, this bending rod has a relatively smaller range of motion, allowing for easy resetting of the reinforcing bar even in narrow areas. It is highly practical and greatly facilitates construction. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of a bending rod used in the construction of reinforcing bars for composite slabs, according to an embodiment of the present invention.
[0023] Figure 2 This is a partial schematic diagram of the connection between the reset head and the rod body in an embodiment of this utility model;
[0024] Figure 3 for Figure 1 A magnified view of part A in the image.
[0025] Icons: 100-rod body, 110-first rod body, 120-second rod body, 200-first bend head, 300-second bend head, 400-reset head, 500-threaded post, 600-threaded groove, 700-support post, 800-grip, 900-arc plate. Detailed Implementation Example
[0026] Please refer to Figure 1- Figure 3This application provides a bending rod for the construction of reinforcing bars in composite slabs. The bending rod mainly includes a rod body 100, a bending assembly, and a reset head 400. The bending assembly consists of two first bending heads 200, located at the first end of the rod body 100. The two first bending heads 200 are spaced apart to form a first bending groove for accommodating the reinforcing bars. The reset head 400 is hook-shaped and located at the second end of the rod body 100. During bending, the reinforcing bar is aligned with the bending groove, abutting against the two first bending heads 200. Force is applied to the rod body 100, causing it to rotate, thereby bending the reinforcing bar. The composite slab can then be installed and positioned. During reset, the hook of the reset head 400 hooks onto the bent reinforcing bar, and pulling it forcefully resets it. The movement path of the rod body 100 is approximately along its axial direction. Compared to the traditional rotary pressing reset method, this bending rod has a relatively small range of motion, making it easy to reset the reinforcing bar even in narrow areas. It is highly practical and brings great convenience to the construction of reinforcing bars for composite slabs.
[0027] In some embodiments of this utility model, the diameter of the first bending groove gradually increases in the direction away from the rod body 100.
[0028] Traditional bending molds have significant drawbacks. Their groove dimensions are fixed, limiting their applicability to only one size of reinforcing bar. In actual construction, reinforcing bars of different sizes are frequently encountered, and existing bending rods cannot meet the bending requirements of various sizes, causing numerous inconveniences and severely impacting construction efficiency and quality. However, in the embodiments of this application, the diameter of the first bending groove gradually increases, enabling it to accommodate reinforcing bars of different diameters. This greatly expands the applicability of this application, making it highly practical and providing a more flexible and convenient solution for reinforcing bar construction.
[0029] In some embodiments of this utility model, a second bending head 300 is also provided at the first end of the above-mentioned rod body 100, and the two above-mentioned first bending heads 200 are triangularly distributed in the second bending head 300.
[0030] In this configuration, any of the first bending head 200 and the second bending head 300 form a second bending groove, the diameter of which gradually increases in the direction away from the rod body 100.
[0031] In the above embodiments, the design of the first bending groove and the second bending groove is ingenious. This allows the bending rod of this application to be inserted into the reinforcing bar from multiple angles, greatly improving the flexibility of use of this application.
[0032] In some embodiments of this utility model, one end of the reset head 400 is provided with a threaded post 500, and the rod body 100 is provided with a threaded groove 600 adapted to the threaded post 500.
[0033] In the above embodiments, the detachable engagement of the threaded groove 600 and the threaded post 500 enables the detachable engagement of the reset head 400 and the rod body 100, facilitating the replacement or maintenance of the reset head 400.
[0034] In some embodiments of this utility model, the bending rod further includes a handle 800 and an arc plate 900. One end of the arc plate 900 is connected to the outer ring surface of the handle 800, and the other end extends to the outside of the handle 800 and forms a groove with the handle 800.
[0035] The aforementioned rod body 100 includes a first rod body 110 and a second rod body 120. The first rod body 110 and the second rod body 120 are connected by the aforementioned handle 800. The first bending head 200 and the second bending head 300 are both disposed on the first rod body 110, and the reset head 400 is disposed on the second rod body 120.
[0036] In the above embodiments, when using the device, the operator holds the handle 800 with their fingers resting on the curved plate 900, making operation more comfortable and convenient. The handle 800 is a hollow structure, and the first rod 110 and the handle 800, as well as the second rod 120 and the handle 800, are connected by welding, effectively improving the structural stability of this application.
[0037] In some embodiments of this utility model, a support column 700 is provided in the groove to connect the arc plate 900 and the handle 800.
[0038] In the above embodiment, the design of the support column 700 improves the stability of the connection between the grip 800 and the arc plate 900.
[0039] In some embodiments of this utility model, both the grip 800 and the arc-shaped plate 900 are provided with anti-slip textures.
[0040] In the above embodiments, the anti-slip texture design plays an important role. It increases the friction between the palm and the grip 800 and between the curved plate 900 and the fingers, making the operator more stable when using the bending rod and less prone to slippage, effectively improving the safety and stability of operation.
[0041] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A bending rod applied to lapping plate lashing construction, characterized in that, The utility model relates to a kind of bending rods, comprising: A rod body (100); Bending assembly, comprising two first bending heads (200), two the first bending head (200) is arranged at the first end of the rod body (100), and two the first bending head (200) is distributed with first bending groove, the first bending groove is used to adapt to the barb muscle; And Reset head (400), it is in the shape of hook, and it is arranged at the second end of the rod body (100).
2. The bending bar for use in the lapping plate lashing construction according to claim 1, characterized in that, The first bending groove gradually increases in diameter in the direction away from the rod body (100).
3. The bending bar for use in the lapping plate lashing construction according to claim 2, characterized in that, It further comprises the second bending head (300) arranged at the first end of the rod body (100), and the second bending head (300) is distributed with the first bending head (200) in triangle; Wherein, any the first bending head (200) and the second bending head (300) are provided with second bending groove, and the second bending groove gradually increases in diameter in the direction away from the rod body (100).
4. The bending bar for use in the lapping plate lashing construction according to claim 1, characterized in that, One end of the reset head (400) is provided with threaded column (500), and the rod body (100) is provided with threaded groove (600) adapted to the threaded column (500).
5. The bending bar for use in the lapping plate lashing construction according to claim 3, characterized in that, The bending rod further comprises a handle (800) and an arc plate (900), one end of the arc plate (900) is connected to the outer surface of the handle (800), the other end extends to the outside of the handle (800), and forms a notch with the handle (800); Wherein, the rod body (100) comprises a first rod body (110) and a second rod body (120), the first rod body (110) and the second rod body (120) are connected by the handle (800), the first bending head (200) and the second bending head (300) are arranged on the first rod body (110), and the reset head (400) is arranged on the second rod body (120).
6. The bending bar for use in the lapping plate lashing construction according to claim 5, characterized in that, The notch is provided with a support column (700) for connecting the arc plate (900) and the handle (800).
7. The bending bar for use in the lapping plate lashing construction according to claim 6, characterized in that, The handle (800) and the arc plate (900) are provided with anti-skid lines.