A bend tool
By designing a bending tool that can be fitted onto the main reinforcement bars, the bending and holding parts are used to achieve precise bending of the stirrups, solving the problem of inaccurate connection between the stirrups and the main reinforcement bars and improving the connection accuracy of the joints.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ROAD & BRIDGE INT CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-05-29
AI Technical Summary
In existing technologies, the bending joints of stirrups and main bars have low precision, and conventional tools cannot effectively position them, resulting in the joints not aligning with the main bars or being severely misaligned.
Design a bending tool, including a bending part and a holding part that can be movably sleeved on the main bar. The bending groove is used to pass through the stirrup. The stirrup is accurately bent by rotating around the axis of the main bar. The bending part is used to limit the connection between the bent joint and the main bar to ensure the accuracy of the connection.
This improved the connection accuracy between the stirrup bending joint and the main reinforcement, ensuring that the bending joint can be accurately lapped onto the main reinforcement, thus reducing errors and misalignment.
Smart Images
Figure CN224294554U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel bar bending tools, and in particular to a steel bar bending tool. Background Technology
[0002] In reinforced concrete structures, stirrups are typically arranged in a ring or spiral shape around the main reinforcement bars to form a reinforcing cage. For example, in the cross-section of a beam, stirrups are arranged around the main reinforcement bars along the beam height; in the cross-section of a column, stirrups are evenly distributed around the column circumference. At one end or other necessary locations, the stirrups need to be bent and lapped onto the main reinforcement bars. However, in current technology, the conventional method used during the construction of reinforced concrete structures is to directly bend the stirrups using a wrench or pliers. During the bending process, there is no positioning between the stirrups and the main reinforcement bars, resulting in some error between the bent portion and the main reinforcement bars. This often leads to misalignment or failure of the bent joint to connect with the main reinforcement bars, resulting in low accuracy in the connection between the bent joints and the main reinforcement bars.
[0003] Therefore, there is an urgent need to design a technical solution that can improve the connection accuracy between the bent joint of the stirrup and the main reinforcement. Utility Model Content
[0004] The purpose of this utility model is to provide a bending tool to solve the problems existing in the prior art and improve the accuracy of the connection between the bending joint of the stirrup and the main reinforcement.
[0005] To achieve the above objectives, this utility model provides the following solution:
[0006] This utility model provides a bending tool for reinforcing bars, comprising: a bending part, which can be movably fitted onto a main reinforcing bar and can rotate around the axis of the main reinforcing bar; a gripping part, fixedly connected to one side of the bending part; and a bending groove, disposed on the bending part and penetrating through the side wall of the bending part, wherein a stirrup can be inserted into the bending groove. The bending part can be fitted onto the main reinforcing bar and rotate around it. In use, the bending part can be fitted onto the main reinforcing bar along its axis, one end of the stirrup can be passed through the bending groove, and the gripping part can be manually held to rotate the bending part around the axis of the main reinforcing bar. During rotation, the bending groove can bend one end of the stirrup. Because the stirrup is always limited by the bending part during bending, it can only be bent around the axis of the main reinforcing bar. Therefore, the connection accuracy between the bent joint of the stirrup and the main reinforcing bar is higher, allowing the bent joint of the stirrup to be precisely overlapped onto the main reinforcing bar.
[0007] Preferably, the bending part includes a bending sleeve, one side of which has an opening arranged along the axial direction of the bending sleeve, and the bending sleeve can be movably sleeved on the main reinforcement through the opening; the gripping part is fixedly connected to the side wall of the bending sleeve, and the axis of the gripping part has an angle with the axis of the bending sleeve; the bending groove is opened on the side of the bending sleeve away from the opening.
[0008] Preferably, the bending groove is a horizontal groove, which is formed on the side wall of the bending part along the length direction of the bending part.
[0009] Preferably, the bending groove is a longitudinal groove, which is formed on the side wall of the bending part in a direction perpendicular to the length direction of the bending part.
[0010] Preferably, the bending groove is a cross-shaped groove, which is formed on the side wall of the bending part.
[0011] Preferably, the bending groove includes a longitudinal groove and a transverse groove. The transverse groove is formed on the side wall of the bending part along the length direction of the bending part, and the longitudinal groove is formed on the side wall of the bending part in a direction perpendicular to the length direction of the bending part. One end of the transverse groove is connected to one side of the longitudinal groove.
[0012] Preferably, the inner wall of the longitudinal groove on the side away from the transverse groove is provided with an arc-shaped groove.
[0013] Preferably, the cross-section of the bent rib sleeve is a circular structure with an opening on one side or a polygonal structure with an opening on one side.
[0014] Preferably, the gripping part includes a grip rod, one end of which is fixedly connected to the side wall of the curved rib sleeve, and the connection end of the grip rod and the curved rib sleeve is located between the opening and the curved rib groove.
[0015] Preferably, the longitudinal groove includes a first longitudinal groove and a second longitudinal groove that are connected, and the widths of the first longitudinal groove and the second longitudinal groove are different.
[0016] The present invention achieves the following technical advantages over the prior art:
[0017] The bending part of this utility model can be sleeved on the main reinforcement and rotated around the main reinforcement. In use, the bending part can be sleeved on the main reinforcement along the axis of the main reinforcement, one end of the stirrup is passed through the bending groove, and the person holds the holding part and rotates the bending part around the axis of the main reinforcement. During the rotation, the bending groove can bend one end of the stirrup. Since the stirrup is always limited by the bending part during the bending process, it can only be bent around the axis of the main reinforcement. Therefore, the connection accuracy between the bent joint of the stirrup and the main reinforcement is higher, so that the bent joint of the stirrup can be accurately overlapped on the main reinforcement. Attached Figure Description
[0018] 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.
[0019] Figure 1 This is a schematic diagram of the bending tool structure in one or more embodiments of the present utility model;
[0020] Figure 2 This is a side view of a bending tool in one or more embodiments of the present invention;
[0021] Figure 3 This is a schematic diagram of the bending tool structure in the second embodiment of the present invention;
[0022] Figure 4 This is a schematic diagram of the bending tool structure in the third embodiment of this utility model;
[0023] Figure 5 A schematic diagram of the lap joint of the main reinforcement and stirrups.
[0024] In the diagram: 1-Main reinforcement, 2-Stirrup, 201-Bent joint, 3-Bent reinforcement sleeve, 301-Opening, 4-Holding part, 5-Bent reinforcement groove, 501-Longitudinal groove, 502-Transverse groove. Detailed Implementation
[0025] 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.
[0026] The purpose of this utility model is to provide a bending tool to solve the problems existing in the prior art and improve the accuracy of the connection between the bending joint of the stirrup and the main reinforcement.
[0027] 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.
[0028] Because steel bars are quite hard, bending them manually with a wrench requires a lot of force. Furthermore, there's no mechanism to control the bending direction; it all depends on the operator's feel, making it difficult to accurately determine the bending direction of the stirrups. This can lead to misalignment or failure of the bent section to connect with the main reinforcement. To address this problem, this invention provides a steel bar bending tool, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the device includes a bending section that can be movably fitted onto the main reinforcement 1 and rotate around the axis of the main reinforcement 1; a holding section 4 is fixedly connected to one side of the bending section; a bending groove 5 is provided on the bending section and penetrates the side wall of the bending section, and a stirrup 2 can be passed through the bending groove 5. When using this invention, the bending section can be fitted onto the main reinforcement 1 along the axis of the main reinforcement 1, one end of the stirrup 2 can be passed through the bending groove 5, and the person holding the holding section 4 can rotate the bending section around the axis of the main reinforcement 1. During the rotation, the bending groove 5 can bend one end of the stirrup 2. Since the stirrup 2 is always limited by the bending section during the bending process, it can only be bent around the axis of the main reinforcement 1. Therefore, the connection accuracy between the bent joint 201 of the stirrup 2 and the main reinforcement 1 is higher, so that the bent joint 201 of the stirrup 2 can be accurately overlapped with the main reinforcement 1.
[0029] In one embodiment, to ensure more accurate directional positioning between the bending member and the main reinforcement 1 during bending, a bending sleeve 3 is used in this embodiment. One side of the bending sleeve 3 has an opening 301 arranged axially along the bending sleeve 3, and the bending sleeve 3 can be movably fitted onto the main reinforcement 1 through the opening 301. After the bending sleeve 3 is fitted onto the main reinforcement 1, the centerline of the bending sleeve 3 along its length is coaxial with the axis of the main reinforcement 1. At this time, the bending sleeve 3 can achieve limiting during the bending process, making the stirrup... During the bending process of the stirrup 2, it can only rotate along the axis of the main reinforcement 1, thus making the plane of the bent joint 201 of the stirrup 2 perpendicular to the axis of the main reinforcement 1, and thus the bent joint 201 can be accurately overlapped on the main reinforcement 1. In order to ensure that the direction of force applied during manual bending is also perpendicular to the axis of the main reinforcement 1, thereby further reducing the error during bending, the gripping part 4 in this embodiment is fixedly connected to the side wall of the bending sleeve 3, and the axis of the gripping part 4 has a 90-degree angle with the axis of the bending sleeve 3. In use, the person holds the end of the gripping part 4 away from the bending sleeve 3 and then rotates it around the axis of the main reinforcement 1. During this time, the bending groove 5 drives one end of the stirrup 2 to rotate synchronously, thereby achieving bending.
[0030] When there are many stirrups 2 and they are bent in the same direction, multiple stirrups 2 can be bent at the same time. To achieve this function, the bending groove 5 can be a horizontal groove 502. The horizontal groove 502 is opened on the side wall of the bending part along the length of the bending part, so that multiple stirrups 2 can be inserted in the horizontal groove 502 at the same time. Then, the gripping part 4 can be rotated along the axis of the main bar 1 to achieve the effect of bending multiple stirrups 2 at the same time.
[0031] In addition to the above-mentioned solutions, in another embodiment, the bending groove 5 can also be designed as a longitudinal groove 501, which is formed on the side wall of the bending part in a direction perpendicular to the length direction of the bending part. Since the diameter of the stirrups 2 is not the same, in order to accommodate the bending of stirrups 2 with different diameters, the width of the longitudinal groove 501 is different in this embodiment. The longitudinal groove 501 is designed as a first longitudinal groove and a second longitudinal groove that are connected and integrally formed. By changing the width of the first longitudinal groove and the second longitudinal groove, the adaptability to stirrups 2 with different diameters can be achieved. Thus, stirrups 2 with different diameters can be selectively engaged in the first longitudinal groove or the second longitudinal groove for targeted bending. Here, the first longitudinal groove and the second longitudinal groove are only one design form of one embodiment. In other embodiments, the longitudinal groove can also be designed as a stepped groove structure with multiple widths as needed. Similarly, in other preferred embodiments, the transverse groove can also be improved in the same way, that is, the transverse groove can also be designed as a stepped groove or as a first transverse groove and a second transverse groove structure with different widths. The specific design form and structure are not limited. In addition to being designed as a strip-shaped groove structure, the transverse groove and the longitudinal groove can also be designed as a smooth arc-shaped groove structure. Since it is designed as a smooth arc-shaped groove structure, the contact surface between the bent bar groove 5 and the stirrup is smoother and will not cause excessive damage to the surface of the stirrup.
[0032] In the second embodiment, the advantages of the two embodiments described above can be combined, and the bending groove 5 can be designed as a cross-shaped groove, which is formed on the side wall of the bending part. The cross-shaped groove of the bending groove 5 includes a longitudinal groove 501 and a transverse groove 502 that intersect in a cross shape. The transverse groove 502 is formed on the side wall of the bending part along the length direction of the bending part, and the longitudinal groove 501 is formed on the side wall of the bending part in a direction perpendicular to the length direction of the bending part.
[0033] In the third embodiment, the bending groove 5 can also be designed as a T-shaped groove, that is, one end of the horizontal groove 502 is connected to one side of the vertical groove 501, and the two are arranged in a T-shape. In this embodiment, an arc-shaped groove is provided on the inner side wall of the side of the vertical groove 501 away from the horizontal groove 502. Other shapes of stirrups 2 can be adapted to the arc-shaped groove.
[0034] The specific structure of the bending sleeve 3 is not limited. The cross-section of the bending sleeve 3 can be designed as a circular structure with an opening 301 on one side or a polygonal structure with an opening 301 on one side. In this embodiment, in order to adapt to the structure of the main reinforcement 1, the bending sleeve 3 is designed as a cylindrical structure with an opening 301 on one side.
[0035] To make bending easier, the grip part 4 can be designed as a long handle. One end of the handle is fixedly connected to the side wall of the bending sleeve 3, and the connection end between the handle and the bending sleeve 3 is located between the opening 301 and the bending groove 5. The end of the handle away from the bending sleeve 3 is used for manual gripping to rotate the bending sleeve 3. To increase comfort, a flexible pad is fixedly fitted on the end of the handle away from the bending sleeve 3 in this embodiment. The flexible pad is made of plastic or rubber and has threads on its surface to increase friction when gripping.
[0036] In addition to the above embodiments, when it is necessary to bend the main reinforcement 1 to a certain extent, the bending tool of this utility model can also be applied. During construction, the bending sleeve 3 is sleeved on the main reinforcement 1 through its opening 301. At this time, the operator needs to push the holding part 4 to apply a force horizontal to the axis of the main reinforcement 1, that is, to push horizontally along the axis of the main reinforcement 1 towards the end of the main reinforcement 1, so as to make the end of the main reinforcement 1 bend horizontally, thereby realizing the bending of the end of the main reinforcement 1.
[0037] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A bending tool, characterized in that: include: The bent section can be movably sleeved on the main reinforcement and can rotate around the axis of the main reinforcement. The gripping part is fixedly connected to one side of the bent rib part; A bend groove is provided on the bend portion and penetrates the side wall of the bend portion, and a stirrup can be inserted into the bend groove.
2. The bending tool according to claim 1, characterized in that: The bending section includes a bending sleeve, one side of which has an opening arranged along the axial direction of the bending sleeve, and the bending sleeve can be movably fitted onto the main reinforcement through the opening; the gripping part is fixedly connected to the side wall of the bending sleeve, and the axis of the gripping part forms an angle with the axis of the bending sleeve; the bending groove is opened on the side of the bending sleeve away from the opening.
3. The bending tool according to claim 1, characterized in that: The bending groove is a horizontal groove, which is formed on the side wall of the bending part along the length direction of the bending part.
4. The bending tool according to claim 1, characterized in that: The bending groove is a longitudinal groove, which is formed on the side wall of the bending part in a direction perpendicular to the length direction of the bending part.
5. The bending tool according to claim 1, characterized in that: The bending groove is a cross-shaped groove, which is formed on the side wall of the bending part.
6. The bending tool according to claim 1, characterized in that: The bending groove includes a longitudinal groove and a transverse groove. The transverse groove is formed on the side wall of the bending part along the length direction of the bending part, and the longitudinal groove is formed on the side wall of the bending part in a direction perpendicular to the length direction of the bending part. One end of the transverse groove is connected to one side of the longitudinal groove.
7. The bending tool according to claim 6, characterized in that: An arc-shaped groove is provided on the inner wall of the longitudinal groove on the side away from the transverse groove.
8. The bending tool according to claim 2, characterized in that: The cross-section of the bent rib sleeve is a circular structure with an opening on one side or a polygonal structure with an opening on one side.
9. The bending tool according to claim 2, characterized in that: The gripping part includes a grip rod, one end of which is fixedly connected to the side wall of the curved sleeve, and the connection end of the grip rod and the curved sleeve is located between the opening and the curved groove.
10. The bending tool according to claim 4 or 6, characterized in that: The longitudinal groove includes a first longitudinal groove and a second longitudinal groove that are connected, and the widths of the first longitudinal groove and the second longitudinal groove are different.