A type of concentric bending wrench for steel bars

Abstract

This utility model relates to the field of construction engineering technology and discloses a rebar concentric bending wrench, comprising a metal pipe, a transverse rebar assembly, a reinforcing bar assembly, and short bending rebars. The transverse rebar assembly is welded to the top of the metal pipe and is perpendicular to the metal pipe. The reinforcing bar assembly is fixed between the outer wall of the metal pipe and the transverse rebar assembly. Two short bending rebars are arranged side by side, welded to both ends of the transverse rebar assembly, and are perpendicular to the side wall of the transverse rebar assembly. This utility model enables single-person operation to efficiently and accurately complete the concentric bending of rebars, greatly improving work efficiency and rebar bending quality, and providing powerful tool support for the fabrication and installation of rebar cages in construction projects.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a rebar concentric bending wrench. Background Technology

[0002] In the field of construction engineering, especially in the construction of reinforced concrete structures, the fabrication and installation of rebar cages are crucial steps. As the skeleton of the concrete structure, the fabrication precision of the rebar cage directly affects the safety and stability of the entire structure. During the construction of the rebar cage, a key procedure is the concentric bending of the main reinforcing bars after the borehole welding is completed. This requires the bent reinforcing bars to maintain a high degree of concentricity to ensure effective fixation of the rebar cage in the concrete and the integrity of the structure.

[0003] Current technology typically requires two people working together with a wrench to perform concentric bending of reinforcing bars. One person holds the bars in place while the other operates the wrench to bend them. This method is not only inefficient and wastes significant human resources, but also prone to uneven concentricity of the bent bars due to human factors such as inconsistent force and angle control, affecting the overall quality of the reinforcing cage. Furthermore, multiple operators increase the complexity of on-site management and communication costs, further reducing construction efficiency.

[0004] Therefore, a concentric bending wrench for steel bars is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a rebar concentric bending wrench, which aims to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a rebar concentric bending wrench, comprising:

[0007] Metal pipe;

[0008] A transverse reinforcing bar assembly, which is welded to the top of the metal pipe and is arranged perpendicular to the metal pipe;

[0009] A reinforcing rib assembly, wherein the reinforcing rib assembly is fixedly connected between the outer wall of the metal pipe and the transverse reinforcing bar assembly;

[0010] Two bent short reinforcing bars are arranged side by side, and the two bent short reinforcing bars are welded to both ends of the transverse reinforcing bar assembly. The bent short reinforcing bars are arranged perpendicular to the side wall of the transverse reinforcing bar assembly.

[0011] According to the present invention, a concentric bending wrench for reinforcing bars is provided, wherein the transverse reinforcing bar assembly includes two long reinforcing bars arranged side by side, the two long reinforcing bars are welded and fixed, and both long reinforcing bars are arranged perpendicular to the metal pipe;

[0012] Two bent short steel bars are welded to both ends of two long steel bars, and the bent short steel bars are arranged perpendicular to the two long steel bars. The reinforcing bar assembly is fixed between the outer wall of the metal pipe and the two long steel bars.

[0013] According to the present invention, a rebar concentric bending wrench is provided, wherein the reinforcing rib assembly is provided in two sets, and the two sets of reinforcing rib assemblies are respectively welded to both sides of the outer wall of the metal pipe, and the end of the reinforcing rib assembly away from the metal pipe is welded to the long rebar.

[0014] According to the present invention, a concentric bending wrench for reinforcing bars includes two parallel inclined reinforcing bars, which are welded and fixed together, and are welded between the metal pipe and the long reinforcing bar.

[0015] According to the present invention, a rebar concentric bending wrench is provided, wherein the length of the metal pipe is 1m to 1.8m.

[0016] According to the present invention, a rebar concentric bending wrench is provided, wherein the metal tube is a steel pipe.

[0017] According to the present invention, a rebar concentric bending wrench is provided, wherein an anti-slip groove is provided on the outer wall of the metal tube.

[0018] According to the present invention, a concentric bending wrench for reinforcing bars is provided, wherein the spacing between two of the bent short reinforcing bars is 12cm to 20cm.

[0019] According to the present invention, a concentric bending wrench for reinforcing bars is provided, wherein the angle between the inclined reinforcing bar and the metal pipe is 15° to 45°; and the length of the inclined reinforcing bar is 12cm to 20cm.

[0020] The present invention discloses the following technical effects:

[0021] In use, the operator holds the metal tube and moves the wrench to the position of the rebar to be bent, ensuring close contact between the short rebar and the main rebar. The metal tube acts as a force transmission medium, accurately and efficiently transmitting the force applied by the operator to the short rebar, providing sufficient and stable power for the bending operation. The two short rebars are perpendicular to the sidewalls of the transverse rebar assembly, forming a stable clamping point upon contact with the main rebar, ensuring that the rebar does not slip or shift during bending. The operator applies external force, causing the metal tube to rotate around the axis of the rebar to be bent. During this process, the short rebar acts as the point of force application, applying a bending moment to the main rebar, forcing it to bend. Due to the precise position and vertical orientation of the short rebars, as well as the stable support provided by the metal tube and reinforcing rib assembly, the rebar maintains a high degree of concentricity throughout the bending process. As the metal tube continues to rotate, the rebar is gradually bent to the required angle. Throughout the bending process, the operator can flexibly adjust the applied force and rotation speed according to the actual situation to ensure that the degree of bending meets the design requirements and maintains a uniform bending arc.

[0022] The wrench of this invention can be operated by a single person. The operator can easily hold the metal pipe and bend it at various angles and directions without the need for assistance from others. Compared with traditional wrenches that require two people to operate, it greatly reduces the waste of human resources, improves work efficiency, and significantly increases construction speed.

[0023] In this invention, the metal tube serves as the main support structure, providing a stable operating base for the entire wrench. The transverse reinforcing bar assembly is welded to the top of the metal tube and vertically positioned, providing a precise installation location for bending short reinforcing bars. Vertical positioning ensures accurate contact between the short reinforcing bar and the reinforcing bar to be bent, providing good starting conditions for subsequent bending operations. The reinforcing bar assembly is fixed between the outer wall of the metal tube and the transverse reinforcing bar assembly, forming a stable support structure. When the operator applies external force to the metal tube, the reinforcing bar assembly can effectively disperse and transfer the force to the transverse reinforcing bar assembly, avoiding structural deformation caused by excessive local stress, enhancing the overall load-bearing capacity and stability of the wrench. It enables single-person operation to complete the task of concentric bending of reinforcing bars efficiently and accurately, greatly improving work efficiency and the quality of reinforcing bar bending, and providing powerful tool support for the fabrication and installation of reinforcing cages in construction projects. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the installation of the bent short steel bar and the long steel bar in this utility model.

[0027] Among them, 1. metal pipe; 2. bent short steel bars; 3. long steel bars; 4. inclined steel bars; 5. anti-slip grooves. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figures 1-2 This utility model provides a rebar concentric bending wrench, comprising:

[0031] Metal tube 1;

[0032] A transverse reinforcing bar assembly is welded to the top of the metal pipe 1 and is arranged perpendicular to the metal pipe 1.

[0033] A reinforcing rib assembly is fixedly connected between the outer wall of the metal pipe 1 and the transverse reinforcing rib assembly.

[0034] Two bent short steel bars 2 are arranged side by side. The two bent short steel bars 2 are welded to both ends of the transverse steel bar assembly, and the bent short steel bars 2 are arranged perpendicular to the side wall of the transverse steel bar assembly.

[0035] With this configuration, when using this invention, the operator holds the metal tube 1 and moves the wrench to the position of the rebar to be bent, ensuring that the short rebar 2 to be bent is in close contact with the rebar. Using the metal tube 1 as a force transmission medium, the force applied by the operator can be accurately and efficiently transmitted to the short rebar 2, providing sufficient and stable power for the bending operation. The two short rebars 2 are perpendicular to the side wall of the transverse rebar assembly, allowing the short rebar 2 to form a stable clamping point when in contact with the rebar, ensuring that the rebar will not slip or shift during the bending process. The operator applies external force, causing the metal tube 1 to rotate around the rebar to be bent. The axis of the bent rebar rotates; during this process, the bent short rebar 2 acts as the point of force application, applying a bending moment to the rebar, forcing it to bend and deform. Due to the precise position and vertical setting of the bent short rebar 2, as well as the stable support provided by the metal tube 1 and the reinforcing rib assembly, the rebar can maintain a high degree of concentricity throughout the bending process; as the metal tube 1 continues to rotate, the rebar is gradually bent to the required angle; throughout the bending process, the operator can flexibly adjust the applied force and rotation speed according to the actual situation to ensure that the degree of bending of the rebar meets the design requirements and maintains a uniform bending arc.

[0036] The wrench of this utility model can be operated by a single person. The operator can easily hold the metal pipe 1 to bend it at various angles and directions without the need for assistance from others. Compared with the traditional wrench which requires two people to operate, it greatly reduces the waste of human resources, improves work efficiency, and significantly increases construction speed.

[0037] In this invention, the metal tube 1 serves as the main support structure, providing a stable operating base for the entire wrench. The transverse steel bar assembly is welded to the top of the metal tube 1 and is vertically installed, providing a precise installation position for the short steel bar 2 being bent. Vertical positioning ensures accurate contact between the short steel bar 2 and the steel bar to be bent, providing good starting conditions for subsequent bending operations. The reinforcing rib assembly is fixed between the outer wall of the metal tube 1 and the transverse steel bar assembly, forming a stable support structure. When the operator applies external force to the metal tube 1, the reinforcing rib assembly can effectively disperse and transfer the force to the transverse steel bar assembly, avoiding structural deformation caused by excessive local stress, enhancing the overall load-bearing capacity and stability of the wrench. It enables single-person operation to complete the concentric bending of steel bars efficiently and accurately, greatly improving work efficiency and the quality of steel bar bending, and providing powerful tool support for the fabrication and installation of steel cages in construction projects.

[0038] The scheme is further optimized. The horizontal steel bar assembly includes two long steel bars 3 arranged side by side. The two long steel bars 3 are welded and fixed. Both long steel bars 3 are set perpendicular to the metal pipe 1.

[0039] Two bent short steel bars 2 are welded to both ends of two long steel bars 3, and the bent short steel bars 2 are set perpendicular to the two long steel bars 3. The reinforcing bar assembly is fixed between the outer wall of the metal pipe 1 and the two long steel bars 3.

[0040] The scheme is further optimized by providing two sets of reinforcing rib assemblies. The two sets of reinforcing rib assemblies are welded to the outer walls of the metal pipe 1 on both sides, and the end of the reinforcing rib assembly away from the metal pipe 1 is welded to the long steel bar 3.

[0041] The scheme was further optimized, and the reinforcing rib assembly included two parallel inclined steel bars 4, which were welded and fixed together. The two inclined steel bars 4 were welded between the metal pipe 1 and the long steel bar 3.

[0042] The structure of the reinforcing rib assembly forms a stable triangular support system. When the operator applies external force to the metal pipe 1, the reinforcing rib assembly can effectively disperse and transfer the force to the long steel bar 3, avoiding structural deformation caused by excessive local stress, enhancing the overall load-bearing capacity and stability of the wrench, and providing reliable support for subsequent bending operations.

[0043] In a further optimized design, the length of the metal tube 1 is 1m to 1.8m; in this embodiment, it is preferably 1.5m.

[0044] Further optimization of the scheme: Metal pipe 1 is a steel pipe. In this embodiment, metal pipe 1 is a scrap steel pipe, which is the waste material generated from the scaffolding pipe of the site enclosure structure, cut into the corresponding length.

[0045] To further optimize the design, an anti-slip groove 5 is provided on the outer wall of the metal tube 1. The anti-slip groove 5 increases the friction between the operator's hand and the metal tube 1, ensuring a stable grip during operation and preventing slippage.

[0046] Further optimization of the scheme: the spacing between the two bent short steel bars 2 is 12cm to 20cm; in this embodiment, it is preferably 16cm.

[0047] In a further optimized design, the angle between the inclined steel bar 4 and the metal pipe 1 is 15° to 45°; in this embodiment, it is preferably 30°; the length of the inclined steel bar 4 is 12cm to 20cm; in this embodiment, it is preferably 16cm.

[0048] Further optimization of the design: the metal tube 1 is equipped with a sliding inner tube (not shown in the figure), the outer diameter of the inner tube is slightly smaller than the inner diameter of the metal tube 1, so that the inner tube can slide smoothly inside the metal tube 1.

[0049] Several equally spaced positioning holes are made on the metal tube 1 near the handheld end, and the positioning holes penetrate the tube wall of the metal tube 1.

[0050] A fixing hole is made on the inner tube at the position corresponding to the positioning hole. When the inner tube slides to the appropriate position, the positioning pin is passed through the positioning hole and the fixing hole in sequence to fix the inner tube to the metal tube.

[0051] Different construction environments and operational needs require different wrench lengths. For example, a shorter wrench may be needed when working in confined spaces, while a longer wrench is more suitable for large-scale operations in open spaces. With its length-adjustable structure, operators can flexibly adjust the wrench length according to actual conditions, improving its applicability. When the wrench is not in use, the inner tube can be retracted into the metal tube 1, shortening the overall length of the wrench for easier carrying and storage, saving space.

[0052] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0053] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A reinforcing bar concentric bender wrench, characterized by, include: Metal tube (1); A transverse reinforcing bar assembly, which is welded to the top of the metal pipe (1) and is arranged perpendicular to the metal pipe (1); A reinforcing rib assembly is fixed between the outer wall of the metal pipe (1) and the transverse reinforcing bar assembly; Two bent short steel bars (2) are arranged side by side, and the two bent short steel bars (2) are welded to both ends of the transverse steel bar assembly, and the bent short steel bars (2) are arranged perpendicular to the side wall of the transverse steel bar assembly.

2. The steel bar concentric bending wrench according to claim 1, characterized in that: The transverse steel reinforcement assembly includes two parallel long steel bars (3), which are welded and fixed together. Both long steel bars (3) are perpendicular to the metal pipe (1). Two bent short steel bars (2) are welded to both ends of two long steel bars (3), and the bent short steel bars (2) are arranged perpendicular to the two long steel bars (3). The reinforcing bar assembly is fixed between the outer wall of the metal pipe (1) and the two long steel bars (3).

3. The steel bar concentric bending wrench according to claim 2, characterized in that: The reinforcing rib assembly is provided in two sets, and the two sets of reinforcing rib assemblies are respectively welded to both sides of the outer wall of the metal pipe (1). The end of the reinforcing rib assembly away from the metal pipe (1) is welded to the long steel bar (3).

4. The steel bar concentric bending wrench according to claim 3, characterized in that: The reinforcing rib assembly includes two parallel inclined steel bars (4), which are welded and fixed together. The two inclined steel bars (4) are welded between the metal pipe (1) and the long steel bar (3).

5. The steel bar concentric bending wrench according to claim 1, characterized in that: The length of the metal tube (1) is 1m to 1.8m.

6. The steel bar concentric bending wrench according to claim 1, characterized in that: The metal pipe (1) is a steel pipe.

7. The steel bar concentric bending wrench according to claim 1, characterized in that: Anti-slip grooves (5) are provided on the outer wall of the metal tube (1).

8. The steel bar concentric bending wrench according to claim 1, characterized in that: The spacing between the two bent short steel bars (2) is 12cm to 20cm.

9. The steel bar concentric bending wrench according to claim 4, characterized in that: The angle between the inclined steel bar (4) and the metal pipe (1) is 15° to 45°; the length of the inclined steel bar (4) is 12cm to 20cm.

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