Manual hoop bending tool

Abstract

The utility model discloses a manual hoop bending tool, which is used for bending a hoop on a main reinforcement and comprises an elbow and a grip. The bend is a circular tube with an opening, the opening direction is parallel to the axis of the bend, the cross section of the bend is arc-shaped, and the radian is larger than or equal to that of a semicircle. A joint bending groove and a stirrup clamping groove are sequentially formed in the middle of the elbow pipe wall close to one side of the opening, and the length of the stirrup clamping groove is smaller than that of the joint bending groove and larger than the diameter of the stirrup; a grip is vertically fixed on the pipe wall of the elbow close to the other side of the opening; and a safety gap is formed between the grip and the stirrup clamping groove. The steel bar bending tool solves the problems of uneconomy and inconvenience caused by the adoption of a steel bar bending machine when steel bars are bent in a small engineering project, operation can be simplified, construction efficiency can be improved, in addition, the tool is compact and light in structure and portable, practicability of the tool is enhanced, and therefore the tool is suitable for popularization and application. The tool has remarkable application value and market potential in small engineering construction.

Description

Technical Field

[0001] The utility model belongs to the field of construction machinery, in particular to a manual hoop bending tool. Background Art

[0002] Stirrups are used as steel bars that meet the shear strength of the inclined section and connect the main force-bearing bars and the mixed reinforcement skeleton in the compression zone. They need to be bent into a closed shape. Usually, a separate steel bar processing site is set aside at the construction site, and an electric steel bar bending machine is used to bend the straight or round steel bars, and then the finished steel bars are transported to the work surface for installation. However, in some small engineering projects, such as the construction of structural columns in the space of each household decoration, it is particularly uneconomical and inconvenient to use a steel bar bending machine.

[0003] After searching, the existing Chinese utility model document with announcement number CN218252626U discloses a manual bending device for lightning rods, "including a bending platform, a fixing structure, a fixing hole, a bending cylinder and a torque handle; the fixing structure is composed of two angle steels, and the two angle steels are arranged in parallel and symmetrically; the bending platform is a square structure, which is fixed between the two angle steels; a fixing hole is provided on one of the angle steels and close to the bending platform; the bending cylinder is fixed to the bending platform close to one end of the fixing hole, and sliding shafts are provided at the middle of both ends, and the torque handle is connected to the bending cylinder through the two sliding shafts; the torque handle is a Y-shaped structure, one end of which is a handle and the other end is two connecting rods, and a connecting sleeve is provided at the end of the connecting rod, and the connecting sleeve is sleeved with the corresponding sliding shaft; a pressure rod is fixed between the two connecting rods." Although the device in the utility model is also used for manual bending, the device has a complex structure and requires a larger operating space due to the use of the bending platform, which has certain limitations. Utility Model Content

[0004] In order to solve the above-mentioned problems existing in the prior art, the purpose of the utility model is to provide a manual hoop bending tool, which solves the problem of uneconomical and inconvenient bending of steel bars in small engineering projects.

[0005] In order to achieve the above purpose and other related purposes, the utility model adopts the following technical solutions:

[0006] The utility model provides a manual hoop bending tool, which is used for bending stirrups on main reinforcement, and comprises an elbow and a handle; the elbow is a round tube with an opening, and the opening direction is parallel to the axis of the elbow, so that the cross section of the elbow is in the shape of a circular arc, and the curvature of the circular arc is greater than or equal to the curvature of a semicircle; a joint bending groove is provided on the elbow tube wall close to one side of the opening, the joint bending groove is located in the middle of the side of the opening and one side of the joint bending groove is connected with the opening, and a stirrup clamping groove is provided at the middle position of the other side of the joint bending groove, and the length of the stirrup clamping groove is less than the length of the joint bending groove and greater than the diameter of the stirrup; the handle is vertically fixed on the elbow tube wall close to the other side of the opening, and a safety interval is provided between the handle and the stirrup clamping groove.

[0007] As a preferred technical solution, the handle is a hollow tubular structure and the inner diameter of the handle is larger than the diameter of the stirrup.

[0008] Furthermore, when the diameter of the stirrup is ≤10 mm, the inner diameter of the handle is in the range of 12-14 mm, and the length of the handle is 200 mm.

[0009] As a preferred technical solution, the depths of the joint bending groove and the stirrup retaining groove along the arc length direction of the pipe wall of the elbow are determined by the main reinforcement diameter and the stirrup diameter respectively.

[0010] As a preferred technical solution, when the diameter of the main reinforcement is ≤20 mm and the diameter of the stirrup is ≤10 mm, the inner diameter of the elbow is in the range of 30 mm-40 mm, and the width of the opening is in the range of 25 mm-30 mm.

[0011] As a preferred technical solution, the length range of the elbow is 80-100 mm, the length range of the joint bending groove is 35-45 mm, and the length range of the stirrup groove is 12-14 mm.

[0012] As a preferred technical solution, the safe spacing distance between the handle and the stirrup slot is 10 mm.

[0013] As a further preferred technical solution, the elbow and the handle are both made of metal.

[0014] As described above, the utility model has the following beneficial effects:

[0015] (1) The utility model is a manual hoop bending tool. The tool adopts round tubes welded perpendicularly to each other and has openings and grooves on the round tubes as elbows. The tool is easy to manufacture and obtain materials, simple to process and shape, and can be reused, thereby improving practicality and economy.

[0016] (2) The utility model provides a manual hoop bending tool, which can make the operation during on-site construction simple and intuitive, greatly improve the construction efficiency and shorten the project time.

[0017] (3) The utility model provides a manual hoop bending tool, which is easy to carry and store due to its compact design, thereby improving the portability of the tool.

[0018] (4) The utility model provides a manual hoop bending tool, which has a hollow tubular structure design of the handle, so that the stirrup can be inserted into the handle for auxiliary bending, thereby compensating for the situation that the elbow cannot bend the stirrup into place due to insufficient operating space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a three-dimensional schematic diagram of a manual hoop bending tool.

[0020] Figures 2 to 5 It is a schematic diagram of the steps of using the tool in the utility model to bend stirrups clockwise.

[0021] Among them, the specific descriptions of the accompanying drawings are as follows: 1. handle; 2. elbow; 21. opening; 22. joint bending groove; 23. stirrup groove; 3. main reinforcement; 4. stirrup. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be noted that the positional relationships indicated by terms such as “longitudinal”, “lateral”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” cited in this specification are based on the positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] Example

[0025] like Figure 1As shown, this embodiment provides a manual stirrup bending tool for bending stirrups 4 on main reinforcement 3. As the diameter of the steel bar increases, the force required for manual bending also increases accordingly. Therefore, this tool is most suitable for in-situ processing and installation of stirrups 4 for beam-column components with a main reinforcement 3 diameter ≤20mm and a stirrup 4 diameter ≤10mm. The tool includes an elbow 2 and a handle 1.

[0026] The elbow 2 is a round tube with an opening 21, and the wall thickness of the elbow 2 is 3mm, thereby avoiding the risk of deformation due to insufficient rigidity during use when the thickness of the round tube is too thin. At the same time, the length range of the elbow 2 is 80-100mm, thereby facilitating construction operations while avoiding deformation caused by being too short. The inner diameter range of the elbow 2 is 30mm-40mm, so that the elbow 2 can be clamped on the main reinforcement 3 while having sufficient space for movement; the opening 21 is opened in a direction parallel to the axis of the elbow 2, so that the cross-section of the elbow 2 is arc-shaped, and the arc of the arc is ≥ the arc of a semicircle. The width range of the opening 21 is 25mm-30mm, which is conducive to the elbow 2 wrapping the main reinforcement 3 when the stirrup 4 is bent. The opening 21 can be obtained by cutting the wall of the round tube, and the width of the opening 21 can be adjusted according to the diameter of the main reinforcement 3.

[0027] A joint bending groove 22 is provided on the pipe wall of the elbow 2 near the side of the opening 21, and the joint bending groove 22 is located in the middle of the side of the opening 21, so as to facilitate the bending of the stirrup 4 at the joint, and the length range of the joint bending groove 22 is 35-45mm; one side of the joint bending groove 22 is connected with the opening 21, and a stirrup clamping groove 23 is provided at the middle position of the other side of the joint bending groove 22, so as to facilitate clamping the stirrup 4 and bending it, and the length of the stirrup clamping groove 23 is less than the length of the joint bending groove 22 and greater than the diameter of the stirrup 4, and the length range of the stirrup clamping groove 23 is 12-14mm.

[0028] The handle 1 is vertically fixed on the tube wall of the elbow 2 near the other side of the opening 21, and the top end face of the handle 1 is welded and fixed at the middle position in the length direction of the elbow 2; a safety interval is provided between the handle 1 and the stirrup groove 23, and the distance of the safety interval is 10 mm, thereby ensuring safe operation.

[0029] The depths of the joint bending groove 22 and the stirrup groove 23 along the arc length direction of the tube wall of the elbow 2 are respectively determined by the diameters of the main reinforcement 3 and the stirrup 4, to ensure that when the stirrup 4 is bent, the elbow 2 is tightly buckled on the main reinforcement 3 and the stirrup 4 is embedded and fixed in the stirrup groove 23; at the same time, under the premise of meeting the safety spacing distance between the handle 1 and the stirrup groove 23, the depths of the openings 21 of the joint bending groove 22 and the stirrup groove 23 along the arc length direction of the tube wall of the elbow 2 take the maximum value.

[0030] The handle 1 is a hollow tubular structure and the inner diameter of the handle 1 is larger than the diameter of the stirrup 4. The inner diameter range of the handle 1 is 12-14 mm, so that the stirrup 4 can be inserted into the handle 1 for auxiliary bending, thereby compensating for the situation that the elbow 2 may not be able to bend the stirrup 4 into place due to insufficient operating space. The length of the handle 1 is 200 mm, which improves the operating convenience while providing sufficient torque to bend the stirrup 4.

[0031] The elbow 2 and the handle 1 are both made of metal, including but not limited to high-strength metal materials such as cast steel or stainless steel.

[0032] During work, the processing and manufacturing process of a manual bending tool in this embodiment includes: first welding and fixing the handle 1 to the elbow 2, then opening 21 along the axial direction on the tube wall of the elbow 2 according to the diameter of the main reinforcement 3, and finally cutting out the joint bending groove 22 and the stirrup groove 23 in sequence according to the diameter of the main reinforcement 3 and the stirrup 4, and the depth of the joint bending groove 22 and the stirrup groove 23 can be adjusted according to the actual situation on site.

[0033] like Figure 2 As shown, in actual work, the following steps are included when using a manual bending tool in this embodiment to bend the stirrup 4:

[0034] S1. After the stirrup 4 is cut, the stirrup 4 is placed on the main reinforcement 3;

[0035] S2, passing the elbow 2 of the manual bending tool through the main reinforcement 3, and placing the stirrup 4 to be bent in the stirrup groove 23;

[0036] S3, hold the handle 1 tightly, and turn the elbow 2 clockwise or counterclockwise according to the bending requirements, so that the stirrup 4 is bent to the specified angle required by the construction drawing;

[0037] S4. Repeat the operations of step S2 and step S3 until the bending of the stirrups 4 on the main reinforcement 3 is completed.

[0038] The above description is only a preferred embodiment of the utility model, and is not intended to limit the utility model. It is known to those skilled in the art that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the utility model.

Claims

1. A manual stirrup bending tool for bending stirrups (4) on main reinforcement (3), characterized in that: The invention comprises an elbow (2) and a handle (1); the elbow (2) is a round tube provided with an opening (21); the opening (21) is opened in a direction parallel to the axis of the elbow (2), so that the cross section of the elbow (2) is in the shape of an arc, and the arc of the arc is greater than or equal to the arc of a semicircle; a joint bending groove (22) is opened on the tube wall of the elbow (2) on the side close to the opening (21); the joint bending groove (22) is located in the middle of the side of the opening (21) and the joint One side of the bending groove (22) is connected to the opening (21), and a stirrup groove (23) is provided at the center of the other side of the joint bending groove (22), and the length of the stirrup groove (23) is less than the length of the joint bending groove (22) and greater than the diameter of the stirrup (4); the handle (1) is vertically fixed on the pipe wall of the elbow (2) near the other side of the opening (21), and a safety interval is provided between the handle (1) and the stirrup groove (23).

2. A manual hoop bending tool according to claim 1, characterized in that: The handle (1) is a hollow tubular structure and the inner diameter of the handle (1) is greater than the diameter of the stirrup (4).

3. A manual hoop bending tool according to claim 2, characterized in that: When the diameter of the stirrup (4) is ≤10 mm, the inner diameter of the handle (1) is in the range of 12-14 mm, and the length of the handle (1) is 200 mm.

4. A manual hoop bending tool according to claim 1, characterized in that: The depths of the joint bending groove (22) and the stirrup retaining groove (23) along the arc length direction of the pipe wall of the elbow (2) are determined by the diameter of the main reinforcement (3) and the diameter of the stirrup (4), respectively.

5. A manual hoop bending tool according to claim 2, characterized in that: When the diameter of the main reinforcement (3) is ≤20 mm and the diameter of the stirrup (4) is ≤10 mm, the inner diameter of the elbow (2) is in the range of 30 mm to 40 mm, and the width of the opening (21) is in the range of 25 mm to 30 mm.

6. A manual hoop bending tool according to claim 1, characterized in that: The length of the elbow (2) is in the range of 80-100 mm, the length of the joint bending groove (22) is in the range of 35-45 mm, and the length of the stirrup groove (23) is in the range of 12-14 mm.

7. A manual hoop bending tool according to claim 1, characterized in that: The safe spacing distance between the handle (1) and the stirrup clamping groove (23) is 10 mm.

8. A manual hoop bending tool according to any one of claims 1 to 7, characterized in that: The elbow (2) and the handle (1) are both made of metal.

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