Steel bar field binding and bending tool

Abstract

The utility model relates to the technical field of building construction, in particular to a reinforcing steel bar field binding and bending tool which comprises a return bending head, a handle sleeve and a positioning block. A clamping groove matched with the stirrup is formed in the front end of the return bend, hooks for hooking the main reinforcement are arranged on the two sides of the clamping groove, and the hooks are fixed to the return bend; connecting shafts are arranged on the two sides of the front end of the handle sleeve, one ends of the connecting shafts are fixed to the return bend, the other ends of the connecting shafts are rotationally connected with the handle sleeve, a positioning rod capable of moving axially is arranged in the handle sleeve, and the front end of the positioning rod is exposed out of the handle sleeve; the positioning block is fixed to the rear end of the return bend and deviates from the hook, the face, facing the handle sleeve, of the positioning block is an arc-shaped face, a plurality of positioning holes are formed in the arc-shaped face in the circumferential direction, and the positioning holes are matched with the front end of the positioning rod in an embedded mode. The single-limb hoop bending device effectively adapts to small main reinforcement gaps, enables stirrups to meet the requirement for 135-degree hook bending, and improves the convenience of bending operation of a user on a single-limb hoop.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a tool for on-site binding and bending of reinforcing bars. Background Technology

[0002] In reinforced concrete structures of building construction projects with seismic requirements and civil defense projects, the stirrups of beams and columns should have 135° hooks at the ends, according to drawings and standard specifications. If both ends of a single-limb stirrup are directly fabricated to 135° during on-site processing, installation in composite stirrups for beams and columns is time-consuming, labor-intensive, and inefficient. To facilitate construction and avoid affecting efficiency, stirrups are currently typically fabricated as semi-finished products, with only one end bent to 135° and the other end bent to 90°. After installation, the 90° hooks of the single-limb stirrups need to be bent back to 135° on-site.

[0003] In the prior art, Chinese utility model patent application number 201922015018.X discloses a force bar device that bends a single-limb stirrup in a composite stirrup by 135°. This device can be bent and installed on-site, and is simple to operate and highly efficient in construction. However, as... Figure 1 As shown, when the main reinforcement bars 12 of the beam and column are arranged at a high density, the space left between the main reinforcement bars 12 for the bending tool to operate is very small. When bending the stirrup hook, the handle of the bending tool is blocked by the space between the adjacent main reinforcement bars 12, so the stirrup hook cannot be bent to 135 degrees. Utility Model Content

[0004] Based on the above problems, the purpose of this utility model is to provide a tool for on-site tying and bending of reinforcing bars. The technical solution adopted by this utility model is as follows:

[0005] This utility model provides a tool for on-site binding and bending of reinforcing bars, including:

[0006] The return bend has a snap-fit ​​groove at its front end that mates with the stirrups, and hooks for hooking the main reinforcement are provided on both sides of the snap-fit ​​groove. The hooks are fixed to the return bend.

[0007] A handle sleeve, wherein both sides of the front end of the handle sleeve are provided with connecting shafts, one end of the connecting shaft is fixed to the return bend, and the other end is rotatably connected to the handle sleeve. A positioning rod that can move axially is provided in the handle sleeve, and the front end of the positioning rod is exposed outside the handle sleeve.

[0008] A positioning block is fixed to the rear end of the bend and is positioned away from the hook. The side of the positioning block facing the handle sleeve is an arc-shaped surface, and multiple positioning holes are arranged circumferentially on the arc-shaped surface. The positioning holes are engaged with the front end of the positioning rod.

[0009] Preferably, the positioning rod is connected to the handle sleeve via a threaded structure, and the rear end of the positioning rod is exposed outside the handle sleeve.

[0010] Preferably, a knob is provided at the rear end of the positioning rod.

[0011] Preferably, the rear part of the handle sleeve is provided with an anti-slip sleeve.

[0012] Preferably, the rear end of the bend is provided with an opening groove, and the positioning block is fixed in the opening groove.

[0013] Preferably, the snap-fit ​​groove is V-shaped.

[0014] Preferably, a hand strap is provided at the rear end of the handle sleeve.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This utility model is effective in adapting to smaller gaps between main reinforcing bars, enabling stirrups to achieve the 135-degree hook requirement, and improving the convenience for users to bend single-limb stirrups. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram illustrating the use of the bending tool described in this background art;

[0019] Figure 2 This is a structural schematic diagram of the rebar tying and bending tool of this utility model;

[0020] Figure 3 This is a schematic diagram illustrating the working principle of the on-site rebar tying and bending tool of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Back bend; 101. Opening groove; 2. Snap-fit ​​groove; 3. Hook; 4. Handle sleeve; 5. Connecting shaft; 6. Positioning block; 601. Arc-shaped surface; 602. Positioning hole; 7. Positioning rod; 8. Knob; 9. Anti-slip sleeve; 10. Hand rope; 11. Stirrup; 12. Main reinforcement. Detailed Implementation

[0022] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] like Figure 2 As shown in the figure, this embodiment discloses a tool for on-site binding and bending of reinforcing bars, including a back bend head 1, a handle sleeve 4, and a positioning block 6.

[0024] The return bend 1 is a metal plate. The front end of the return bend 1 has a locking groove 2 that mates with the stirrup 11. Hooks 3 for hooking the main reinforcing bars 12 are located on both sides of the locking groove 2. The hooks 3 are welded to the return bend 1. Connecting shafts 5 are located on both sides of the front end of the handle sleeve 4. One end of the connecting shaft 5 is welded to the return bend 1, and the other end is rotatably connected to the handle sleeve 4. A positioning rod 7, which can move axially, is located inside the handle sleeve 4, with its front end exposed. A positioning block 6 is welded to the rear end of the return bend 1, and the positioning block 6 faces away from the hook 3. The side of the positioning block 6 facing the handle sleeve 4 is an arc-shaped surface 601, the center of which coincides with the rotation axis of the handle sleeve 4. Multiple positioning holes 602 are arranged circumferentially on the arc-shaped surface 601, and the positioning holes 602 are engaged with the front end of the positioning rod 7.

[0025] The working principle of this utility model is as follows: Figure 3 As shown, the two hooks 3 cross the stirrup 11 and hook onto the main reinforcement 12. Then, the whole assembly is rotated so that the locking groove 2 abuts against the stirrup 11. Using the principle of leverage, the stirrup 11 is bent around the main reinforcement 12 with the main reinforcement 12 as the center. After the handle sleeve 4 touches the adjacent main reinforcement 12, the positioning rod 7 moves outward, so that the positioning rod 7 disengages from the positioning hole 602. Then, the handle sleeve 4 is rotated (i.e., rotated to the side away from the main reinforcement 12). After the positioning rod 7 aligns with the new positioning hole 602, the positioning rod 7 moves inward, so that the positioning rod 7 is inserted and engaged with the new positioning hole 602. At this time, continuing to rotate the handle sleeve 4 can bend the original 90° stirrup 11 to 135°.

[0026] In this embodiment, three positioning holes 602 are provided on the arc-shaped surface 601, with the lowest positioning hole 602 corresponding to the return bend 1.

[0027] In this embodiment, the rear end of the return bend 1 is provided with an opening groove 101, and the positioning block 6 is welded and fixed in the opening groove 101.

[0028] In this embodiment, the outer wall of the positioning rod 7 is designed with external threads, and the inner wall of the handle sleeve 4 is designed with internal threads. The positioning rod 7 is connected to the handle sleeve 4 through a threaded structure. By rotating the positioning rod 7 in both directions, the positioning rod 7 can be moved axially along the handle sleeve 4.

[0029] In this embodiment, a knob 8 is provided at the rear end of the positioning rod 7, and the positioning rod 7 is rotated by operating the knob 8.

[0030] In this embodiment, a non-slip sleeve 9 is provided at the rear of the handle sleeve 4. The non-slip sleeve 9 is made of rubber, which makes it easy for workers to grip and also has a non-slip function. In addition, a hand rope 10 is provided at the rear end of the handle sleeve 4. The anti-slip hand rope 7 is put on the wrist to prevent the bending tool from falling off accidentally.

[0031] In this embodiment, the snap-fit ​​groove 2 is V-shaped. With the help of the V-shaped opening design, the snap-fit ​​groove 2 can adapt to stirrups 11 of different diameters.

[0032] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A tool for on-site binding and bending of reinforcing bars, characterized in that, include: The return bend (1) has a snap-fit ​​groove (2) at its front end that cooperates with the stirrups. Both sides of the snap-fit ​​groove (2) are provided with hooks (3) for hooking the main reinforcement. The hooks (3) are fixed to the return bend (1). Handle sleeve (4), with connecting shafts (5) on both sides of the front end of the handle sleeve (4). One end of the connecting shaft (5) is fixed to the return bend (1), and the other end is rotatably connected to the handle sleeve (4). A positioning rod (7) that can move axially is provided in the handle sleeve (4), and the front end of the positioning rod (7) is exposed outside the handle sleeve (4). The positioning block (6) is fixed at the rear end of the return bend (1) and is away from the hook (3). The side of the positioning block (6) facing the handle sleeve (4) is an arc-shaped surface (601). The arc-shaped surface (601) is provided with a plurality of positioning holes (602) arranged circumferentially. The positioning holes (602) are engaged with the front end of the positioning rod (7).

2. The rebar on-site binding and bending tool according to claim 1, characterized in that: The positioning rod (7) is connected to the handle sleeve (4) by a threaded structure, and the rear end of the positioning rod (7) is exposed outside the handle sleeve (4).

3. The rebar on-site binding and bending tool according to claim 2, characterized in that: A knob (8) is provided at the rear end of the positioning rod (7).

4. The rebar on-site binding and bending tool according to claim 1, characterized in that: The handle sleeve (4) is provided with an anti-slip sleeve (9) at the rear.

5. The rebar on-site binding and bending tool according to claim 1, characterized in that: The rear end of the bend (1) is provided with an opening groove (101), and the positioning block (6) is fixed in the opening groove (101).

6. The rebar on-site binding and bending tool according to claim 1, characterized in that: The snap-fit ​​groove (2) is V-shaped.

7. The rebar on-site binding and bending tool according to claim 1, characterized in that: A hand rope (10) is provided at the rear end of the handle sleeve (4).

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