A stirrup bending device

Abstract

This application relates to the field of building construction technology, specifically providing a stirrup bending device. The stirrup bending device includes: an arc-shaped groove tube with a first groove edge and a second groove edge opposite to each other; a bending notch on the second groove edge; the bending notch extending towards the bottom of the arc-shaped groove tube; a handle fixedly disposed on the side of the first groove edge away from the second groove edge; and a rolling element fixedly disposed on the bending notch. By providing a bending notch on the second groove edge of the arc-shaped groove tube and installing a rolling element on the bending notch, the supporting surface of the stirrup during cold bending on-site has a rolling function, effectively reducing friction and abrasion between the stirrup and the bending notch. This avoids the technical defects of traditional stirrup bending devices that cause wear of the opening groove due to frequent friction with the reinforcing bar, improving the tool's service life and construction reliability.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a stirrup bending device. Background Technology

[0002] Currently, stirrups for beams and columns are typically prefabricated into a closed shape at the steel reinforcement processing plant. After fabrication, construction workers remove the corresponding number of stirrups according to the drawings, pass them through the longitudinal reinforcement of the beams and columns, and tie them according to the designed stirrup spacing, thus forming the basic framework structure of the beams and columns. However, in actual construction, if the stirrup tying spacing is incorrect or if it is necessary to densify the stirrups in a certain area, the prefabricated closed stirrups cannot pass through the longitudinal reinforcement of the beams and columns, thus making it impossible to tie them to the designated positions, increasing the difficulty of on-site construction. To address this, construction workers usually use a stirrup bending device. This tool includes jaws and a handle connected to the jaws. The jaws are an arc-shaped grooved tube structure with an open slot for bending and adjusting the stirrups on-site.

[0003] Existing stirrup bending devices insert longitudinal bars into an open slot and use the bars as fulcrums, bending the stirrups by rotating a handle. Long-term use of this structure can easily lead to frequent contact between the open slot and the reinforcing bar, causing wear and tear, which in turn damages the open slot of the bending tool.

[0004] Therefore, existing technologies have defects and shortcomings, and need further improvement and development. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a stirrup bending device, which aims to solve the problem that the opening groove of the stirrup bending device in the prior art is easily worn.

[0006] The technical solution adopted by this application to solve the technical problem is as follows: A stirrup bending device for bending stirrups, comprising:

[0007] An arc-shaped grooved tube, wherein a first groove edge and a second groove edge are disposed opposite to each other; the second groove edge is provided with a bending notch; the bending notch extends toward the bottom of the arc-shaped grooved tube;

[0008] A handle, wherein the handle is fixedly disposed on the side of the first groove away from the second groove;

[0009] A rolling element, which is fixedly disposed on the bending notch.

[0010] Optionally, the rolling element includes a first adjusting seat, a roller, and a second adjusting seat, wherein the roller is provided with a rotating shaft; the rotating shaft is respectively engaged in the first adjusting seat and the second adjusting seat;

[0011] The first adjusting seat is fixedly disposed on the left side of the bending notch, and the second adjusting seat is fixedly disposed on the right side of the bending notch.

[0012] Optionally, the rotating shaft is integrally formed with a left flat section, a round section and a right flat section. The left flat section is disposed on the first adjusting seat, the right flat section is disposed on the second adjusting seat, and the roller is rolled on the round section.

[0013] Optionally, both the first adjusting seat and the second adjusting seat are provided with hollow arc-shaped blocks; the hollow arc-shaped blocks are disposed on the side of the bending notch and are both located at the bottom of the arc-shaped groove tube.

[0014] Optionally, the hollow arc-shaped block is provided with an arc-shaped bottom, an arc-shaped top, a first arc-shaped connecting part, and a second arc-shaped connecting part, both of which are used to connect the arc-shaped bottom and the arc-shaped top; the arc-shaped bottom is provided on the side of the bending notch; an arc-shaped cavity is provided between the arc-shaped bottom and the arc-shaped top, and the left flat segment and the right flat segment are both provided in the arc-shaped cavity.

[0015] Optionally, an adjustment window is provided at the top of the arc; limit bolts are provided on both the left and right flat sections; the limit bolts extend from the adjustment window.

[0016] Optionally, the stirrup bending device further includes a locking nut, which is screwed to the limiting bolt; the locking nut is used to fix the limiting bolt on the adjusting window.

[0017] Optionally, the adjustment window is provided with parallel scales, which are used to help fix the left and right flat sections on the same horizontal line.

[0018] Optionally, the bending notch is set as a semicircle or a rectangle, and the included angle between the line connecting the first groove edge and the second groove edge is set to 135° to 150°.

[0019] Optionally, a bearing is provided inside the roller, and the bearing is fixedly disposed with the circular section.

[0020] Compared with existing technologies, this application provides a stirrup bending device. This device features a bending notch on the second groove side of an arc-shaped groove tube, with a rolling element installed on this notch. This ensures that during cold bending of the stirrup on-site, the supporting surface of the stirrup has a rolling function, effectively reducing friction and abrasion between the stirrup and the bending notch. This avoids the technical defects of traditional stirrup bending devices, such as wear of the opening groove due to frequent friction with the reinforcing bar, thus improving the tool's service life and construction reliability. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the stirrup bending device provided in this application;

[0022] Figure 2 This is a top view of the stirrup bending device provided in this application;

[0023] Figure 3 This is a three-dimensional structural schematic diagram of the stirrup bending device provided in this application;

[0024] Figure 4 This is a three-dimensional structural diagram of the rotating shaft and roller assembly of the stirrup bending device provided in this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10. Stirrup bending device; 11. Arc-shaped groove tube; 111. First groove edge; 112. Second groove edge; 1121. Bending notch; 12. Handle; 13. Rolling element; 131. First adjusting seat; 132. Roller; 133. Second adjusting seat; 134. Rotating shaft; 1341. Left flat section; 1342. Round section; 1343. Right flat section; 135. Hollow arc-shaped block; 1351. Arc-shaped bottom; 1352. Arc-shaped top; 1353. First arc-shaped connecting part; 1354. Second arc-shaped connecting part; 1355. Arc-shaped cavity; 1356. Adjusting window; 1357. Limiting bolt; 1358. Parallel scale; 14. Locking nut. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Please refer to the following: Figures 1 to 4 The first embodiment of this application provides a stirrup bending device 10, which mainly includes an arc-shaped groove tube 11, a handle 12, and a rolling element 13. The arc-shaped groove tube 11 has a first groove edge 111 and a second groove edge 112 on its two sides. A bending notch 1121 is provided on the second groove edge 112, extending towards the bottom of the arc-shaped groove tube 11. A handle 12 is provided on the side of the first groove edge 111 away from the second groove edge 112, allowing the operator to apply force. A rolling element 13 is provided at the position of the bending notch 1121. The rolling element 13 consists of a first adjusting seat 131, a roller 132, and a second adjusting seat 133, wherein the roller 132 is rotatably disposed between the first adjusting seat 131 and the second adjusting seat 133 via a rotating shaft 134.

[0031] The rotating shaft 134 of the rolling element 13 is composed of a left flat section 1341, a circular section 1342, and a right flat section 1343. The left flat section 1341 and the right flat section 1343 are respectively disposed in the hollow arc-shaped block 135 in the first adjusting seat 131 and the second adjusting seat 133. The circular section 1342 is provided with a roller 132. The structure of the hollow arc-shaped block 135 includes an arc-shaped bottom 1351, an arc-shaped top 1352, and a first arc-shaped connecting part 1353 and a second arc-shaped connecting part 1354 connecting the two. An arc-shaped cavity 1355 is formed between the arc-shaped bottom 1351 and the top to accommodate the left flat section 1341 and the right flat section 1343 of the rotating shaft 134. An adjustment window 1356 is provided on the arc-shaped top 1352 to facilitate external adjustment and fixation of the rotating shaft 134. A limiting bolt 1357 on the rotating shaft 134 extends from the adjustment window 1356, and the position of the limiting bolt 1357 is fixed by a locking nut 14. Specifically, the locking nut 14 can be a wing nut, thereby ensuring the stability of the rolling element 13 during use and preventing it from shifting. To ensure the consistency of the rotating shaft 134 in the horizontal direction, a parallel scale 1358 is also provided on the adjustment window 1356 to assist in the alignment and positioning of the left flat section 1341 and the right flat section 1343.

[0032] During use, the stirrup bending device 10 first places its arc-shaped groove 11 through the opening on the side of the groove onto the already formed longitudinal reinforcement of the beam and column, so that the longitudinal reinforcement is accommodated in the cavity of the arc-shaped groove 11 and located directly below the bending notch 1121. Then, the stirrup reinforcement to be bent is inserted into the bending notch 1121 set on one side of the groove and comes into contact with the roller 132. The operator holds the handle 12 and presses down. The force generated by the handle 12 is transmitted to the longitudinal reinforcement through the arc-shaped groove 11, forming a stable fulcrum. Then, the rolling element 13 applies a bending moment to the stirrup. Since the roller 132 and the stirrup are in rolling contact, frictional resistance and scraping are effectively reduced, thus successfully completing the cold bending of the stirrup.

[0033] During the bending process, a bearing is installed inside the roller 132, and the bearing is fixedly installed with the circular section 1342 of the rotating shaft 134, further improving the flexibility and stability of the roller 132's rotation and effectively preventing damage to the surface of the stirrup. Simultaneously, the structure of the rolling element 13 can be adjusted according to different steel bar sizes by adjusting the position of the limiting bolt 1357 in the adjusting window 1356 to accommodate stirrups of different diameters, thus achieving practicality.

[0034] Please refer to the following: Figures 1 to 3In some embodiments, the stirrup bending device 10 includes an arc-shaped groove tube 11, a handle 12, and a rolling element 13. The arc-shaped groove tube 11 has a first groove edge 111 and a second groove edge 112 opposite to each other. The second groove edge 112 has a bending notch 1121. The bending notch 1121 extends towards the bottom of the arc-shaped groove tube 11. The handle 12 is fixedly disposed on the side of the first groove edge 111 away from the second groove edge 112. The rolling element 13 is fixedly disposed on the bending notch 1121. Furthermore, by providing a bending notch 1121 on the second groove edge 112 of the arc-shaped groove tube 11 and providing a rolling element 13 on the bending notch 1121, the supporting surface of the stirrup during cold bending on site has a rolling function, effectively reducing friction and abrasion between the stirrup and the bending notch 1121. This avoids the defects of traditional stirrup bending devices 10, which suffer from wear of the opening groove due to frequent friction with the reinforcing bars, thus improving the tool's service life and construction reliability.

[0035] Please refer to the following: Figures 1 to 3 In some embodiments, the rolling element 13 includes a first adjusting seat 131, a roller 132, and a second adjusting seat 133. The roller 132 is provided with a rotating shaft 134. The rotating shaft 134 is respectively engaged in the first adjusting seat 131 and the second adjusting seat 133. The first adjusting seat 131 is fixedly disposed on the left side of the bending notch 1121, and the second adjusting seat 133 is fixedly disposed on the right side of the bending notch 1121. Furthermore, by configuring the rolling element 13 as a combination of the first adjusting seat 131, the roller 132, and the second adjusting seat 133, and by having the rotating shaft 134 of the roller 132 respectively engaged in the first adjusting seat 131 and the second adjusting seat 133, not only is the stable placement of the roller 132 at the bending notch 1121 achieved, but the replaceability and maintenance of the roller 132 are also facilitated. The adjusting seats firmly fix both ends of the roller 132, which helps to maintain the stable rotation of the roller 132 during the bending of the stirrup, reduces bending resistance, and further improves operational smoothness and force application efficiency.

[0036] Please refer to the following: Figure 4In some embodiments, the rotating shaft 134 is integrally formed with a left flat section 1341, a circular section 1342, and a right flat section 1343. The left flat section 1341 is disposed on the first adjusting seat 131, and the right flat section 1343 is disposed on the second adjusting seat 133. The roller 132 is rolled on the circular section 1342. Furthermore, by integrally forming the rotating shaft 134 with the left flat section 1341, circular section 1342, and right flat section 1343, and having the roller 132 mounted on the circular section 1342, this structure enhances the axial stability of the roller 132 and prevents it from detaching due to lateral displacement during strong bending. Simultaneously, the left flat section 1341 and right flat section 1343 are respectively inserted into the adjusting seat, which helps improve connection accuracy and the rotational flexibility of the roller 132, providing reliable support for high-intensity cold bending operations.

[0037] Please refer to the following: Figures 2 to 3 In some embodiments, both the first adjusting seat 131 and the second adjusting seat 133 are provided with hollow arc-shaped blocks 135; the hollow arc-shaped blocks 135 are located on the side of the bending notch 1121 and are both located at the bottom of the arc-shaped groove tube 11. Furthermore, by providing hollow arc-shaped blocks 135 on the first adjusting seat 131 and the second adjusting seat 133 respectively, and fixing the hollow arc-shaped blocks 135 on the side of the bending notch 1121 and at the bottom of the arc-shaped groove tube 11, the rolling structure becomes more compact and reasonable. The hollow arc-shaped blocks 135 effectively protect the flat sections at both ends of the rotating shaft 134 from external damage and enhance the connection strength between the adjusting seat and the bending notch 1121, preventing the roller 132 from loosening or deforming during heavy-load bending, thus improving the overall structural stability.

[0038] Please refer to the following: Figures 2 to 3In some embodiments, the hollow arc-shaped block 135 is provided with an arc-shaped bottom 1351, an arc-shaped top 1352, a first arc-shaped connecting portion 1353, and a second arc-shaped connecting portion 1354. The first arc-shaped connecting portion 1353 and the second arc-shaped connecting portion 1354 are both used to connect the arc-shaped bottom 1351 and the arc-shaped top 1352. The arc-shaped bottom 1351 is provided on the side of the bending notch 1121. An arc-shaped cavity 1355 is provided between the arc-shaped bottom 1351 and the arc-shaped top 1352. The left flat segment 1341 and the right flat segment 1343 are both provided in the arc-shaped cavity 1355. Furthermore, by setting an arc-shaped bottom 1351, an arc-shaped top 1352, a first arc-shaped connecting part 1353, and a second arc-shaped connecting part 1354, a structure with an internal arc-shaped cavity 1355 is formed. The left flat section 1341 and the right flat section 1343 are respectively set inside the arc-shaped cavity 1355, allowing the position of the rotating shaft 134 to be adjusted within the cavity. This helps improve the installation accuracy of the roller 132, reduces vibration transmission and structural stress concentration, extends the tool's service life, and facilitates the disassembly and assembly of the rotating shaft 134, as well as the replacement or adjustment of the roller 132.

[0039] Please refer to the following: Figures 3 to 4 In some embodiments, the arc-shaped top 1352 is provided with an adjustment window 1356; both the left flat section 1341 and the right flat section 1343 are provided with limiting bolts 1357; the limiting bolts 1357 extend from the adjustment window 1356. Therefore, by providing an adjustment window 1356 in the arc-shaped top 1352 and providing limiting bolts 1357 on the left flat section 1341 and the right flat section 1343, allowing the limiting bolts 1357 to extend from the adjustment window 1356, the position of the roller 132's rotating shaft 134 can be finely adjusted and limited. This allows the operator to flexibly adjust the height and angle of the roller 132 according to construction needs, ensuring smooth bending of the stirrups at different cross-sections or angles, while preventing axial slippage of the roller 132 during use.

[0040] Please refer to the following: Figures 3 to 4 In some embodiments, the stirrup bending device 10 further includes a locking nut 14, which is screwed onto the limiting bolt 1357. The locking nut 14 is used to fix the limiting bolt 1357 onto the adjusting window 1356. By setting the locking nut 14 to be screwed onto the limiting bolt 1357, the limiting bolt 1357 can be reliably fixed onto the adjusting window 1356. This makes the roller 132 more securely installed, preventing the limiting bolt 1357 from loosening during use, ensuring the precise and consistent axial position of the roller 132, improving the overall reliability and safety of the equipment, and making it suitable for scenarios involving repeated construction operations.

[0041] Please refer to the following: Figure 1In some embodiments, the adjustment window 1356 is provided with parallel scale 1358, which is used to assist in fixing the left flat section 1341 and the right flat section 1343 on the same horizontal line. Furthermore, by providing parallel scale 1358 on the adjustment window 1356 to assist in fixing the left flat section 1341 and the right flat section 1343 on the same horizontal line, it helps the operator quickly align the height of both sides of the roller 132, improving installation efficiency and positioning accuracy. This ensures that the roller 132 maintains balanced force during operation, avoiding bending angle deviations due to one side being too low or too high, thus improving bending consistency and construction quality.

[0042] In some embodiments, the bending notch 1121 is set as a semicircle or rectangle, and the included angle between the lines connecting the first groove edge 111 and the second groove edge 112 is set to 135° to 150°. Furthermore, by setting the bending notch 1121 as a semicircle or rectangle and setting the included angle between the lines connecting the first groove edge 111 and the second groove edge 112 to 135° to 150°, it is possible to adapt to the bending operations of stirrups with different sizes and angle requirements. This helps the operator apply force more smoothly, enhances the efficiency of the lever principle, improves the control accuracy and torque output of the bending action, and also reduces the deformation and wear of the tool during use.

[0043] In some embodiments, a bearing (not shown in the figure) is provided inside the roller 132. The inner ring of the bearing is fixedly disposed with the circular section 1342, and the outer ring of the bearing is fixedly disposed with the roller 132. By providing a bearing inside the roller 132 and fixing the bearing to the circular section 1342, the roller 132 can rotate more smoothly and is more wear-resistant, significantly reducing rolling resistance. This allows the roller 132 to maintain stable operation under high-frequency use, reducing jamming, thereby protecting the surface of the stirrup from scratches, improving bending accuracy, and further extending the tool's service life.

[0044] In some embodiments, the roller 132 may be made of a wear-resistant plastic structure, including but not limited to ultra-high molecular weight polyethylene, polytetrafluoroethylene, polyoxymethylene, or polyketone.

[0045] In summary, this application provides a stirrup bending device, comprising: an arc-shaped groove tube with a first groove edge and a second groove edge opposite to each other; a bending notch on the second groove edge; the bending notch extending towards the bottom of the arc-shaped groove tube; a handle fixedly disposed on the side of the first groove edge away from the second groove edge; and a rolling element fixedly disposed on the bending notch. By providing a bending notch on the second groove edge of the arc-shaped groove tube and a rolling element on the bending notch, the supporting surface of the stirrup during cold bending on site has a rolling function, effectively reducing friction and abrasion between the stirrup and the bending notch. This avoids the technical defects of traditional stirrup bending devices that suffer from wear of the opening groove due to frequent friction with the reinforcing bar, improving the tool's service life and construction reliability.

[0046] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A stirrup bending apparatus for bending a stirrup, characterized by, The stirrup bending device includes: An arc-shaped grooved tube, wherein a first groove edge and a second groove edge are disposed opposite to each other; the second groove edge is provided with a bending notch; the bending notch extends toward the bottom of the arc-shaped grooved tube; A handle, wherein the handle is fixedly disposed on the side of the first groove away from the second groove; A rolling element, which is fixedly disposed on the bending notch.

2. The stirrup bending device according to claim 1, characterized in that, The rolling element includes a first adjusting seat, a roller, and a second adjusting seat, wherein the roller is provided with a rotating shaft; the rotating shaft is respectively engaged in the first adjusting seat and the second adjusting seat. The first adjusting seat is fixedly disposed on the left side of the bending notch, and the second adjusting seat is fixedly disposed on the right side of the bending notch.

3. The stirrup bending device according to claim 2, characterized in that, The rotating shaft is integrally formed and has a left flat section, a round section and a right flat section. The left flat section is set on the first adjusting seat, the right flat section is set on the second adjusting seat, and the roller is rolled on the round section.

4. The stirrup bending device according to claim 3, characterized in that, Both the first and second adjustment seats are provided with hollow arc-shaped blocks; the hollow arc-shaped blocks are located on the side of the bending notch and are both located at the bottom of the arc-shaped groove tube.

5. The stirrup bending device according to claim 4, characterized in that, The hollow arc-shaped block is provided with an arc-shaped bottom, an arc-shaped top, a first arc-shaped connecting part, and a second arc-shaped connecting part. Both the first arc-shaped connecting part and the second arc-shaped connecting part are used to connect the arc-shaped bottom and the arc-shaped top. The arc-shaped bottom is provided on the side of the bending notch. An arc-shaped cavity is provided between the arc-shaped bottom and the arc-shaped top. The left flat body segment and the right flat body segment are both provided in the arc-shaped cavity.

6. The stirrup bending device according to claim 5, characterized in that, An adjustment window is provided at the top of the arc; limit bolts are provided on both the left and right flat sections; the limit bolts extend from the adjustment window.

7. The stirrup bending device according to claim 6, characterized in that, The stirrup bending device also includes a locking nut, which is screwed to the limiting bolt; the locking nut is used to fix the limiting bolt on the adjustment window.

8. The stirrup bending device according to claim 6, characterized in that, The adjustment window is provided with parallel scales, which are used to help fix the left and right flat sections on the same horizontal line.

9. The stirrup bending device according to claim 7, characterized in that, The bending notch is set as a semicircle or a rectangle, and the included angle between the line connecting the first groove edge and the second groove edge is set as 135° to 150°.

10. The tie bender device of claim 3, wherein, The roller is equipped with a bearing, which is fixedly mounted to the circular section.

Images