A reinforcing steel bar bending auxiliary device for construction engineering
By using a limiting structure and a cleaning structure to assist in bending steel bars in construction projects, the problems of steel bar offset and slippage during bending have been solved, achieving high-precision steel bar processing and a safe operating environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN DONGSHEN CONSTRUCTION ENGINEERING CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-24
AI Technical Summary
The lack of effective limitations in existing steel bar bending devices for construction projects makes it easy for steel bars to shift or slip during the bending process, making it difficult to meet high precision requirements. Furthermore, manual hand-held fixing poses safety risks and equipment contamination issues.
A rebar bending auxiliary device was designed, comprising a worktable, a connecting seat, a moving roller, a limiting structure, and a cleaning structure. The limiting structure restricts the movement path of the rebar, and the cleaning structure removes impurities, ensuring bending accuracy and safety.
It effectively avoids the offset and slippage of steel bars during the bending process, ensures the accuracy of bending angle and size, reduces equipment contamination and safety risks, and improves the safety and efficiency of operation.
Smart Images

Figure CN224542970U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, specifically to an auxiliary device for bending steel bars in building engineering. Background Technology
[0002] In construction engineering, because the original steel bars are straight, they cannot directly meet the shape requirements of complex building structures. The steel bars are relatively strong and difficult to bend by humans, so they need to be processed into specific shapes using bending equipment.
[0003] In existing technologies, one end of the reinforcing bar is placed between two sets of positioning rods on a bending disc. The bending disc rotates, causing the positioning rods to squeeze the reinforcing bar, thus bending it. This method is convenient and quick.
[0004] However, there are still certain limitations in actual use. Due to the lack of effective constraints in the use of ordinary steel bar bending devices for construction projects, the steel bars are prone to deviation or slippage during the bending process, resulting in inaccurate bending angles and dimensions, which makes it difficult to meet the high precision requirements of steel bar processing in construction projects. Moreover, when the steel bars are manually held and fixed, the steel bars may bounce or break, causing injury to the operators and increasing construction risks. In addition, during actual use, dirt and other impurities adhering to the surface of the steel bars may become embedded in the steel bars or contaminate the equipment during the bending process, leading to deviations in bending angles, damage to the surface of the steel bars, or accelerated wear of the equipment. Therefore, an auxiliary device for bending steel bars in construction projects is proposed to solve the above problems. Utility Model Content
[0005] To address the aforementioned shortcomings of existing technologies, this utility model provides a rebar bending auxiliary device for construction engineering. This device effectively solves the problems of insufficient constraints in existing technologies, the tendency for rebars to shift or slip during bending, resulting in inaccurate bending angles and dimensions, making it difficult to meet the high precision requirements of rebar processing in construction engineering. Furthermore, when rebars are manually held in place, they may bounce or break, causing injury to operators and increasing construction risks. Additionally, during actual use, impurities such as mud adhering to the rebar surface can become embedded in the rebar or contaminate the equipment during bending, leading to bending angle deviations, rebar surface damage, or accelerated equipment wear.
[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides: A worktable and a connecting seat are provided. A bending disc is mounted on the top of the worktable. The connecting seat is threadedly tightened to the top of the worktable via a threaded rod. A movable roller is rotatably connected to the top of the connecting seat via a rotating shaft. An auxiliary unit is provided on the outer wall of the connecting seat, and this auxiliary unit includes: The limiting structure includes a guide screw, a first limiting plate, and a second limiting plate. The guide screw is rotatably connected to the inner cavity of the connecting seat via a bearing. A movable block is threadedly connected to the outer wall of the guide screw, and a connecting frame is fixedly installed on the outer wall of the movable block. The other end of the connecting frame is fixedly connected to the outer wall of the first limiting plate. A support rod is fixedly installed on the outer wall of the second limiting plate, and the other end of the support rod is fixedly installed on the outer wall of the connecting seat. The cleaning structure, located on top of the connector, is used to clean impurities from the outer wall of the reinforcing steel.
[0007] Preferably, a rotating shaft is movably inserted into the outer wall of the connecting seat, and a second bevel gear is fixedly provided on the outer wall of the rotating shaft. A first bevel gear is fixedly provided on the outer wall of the guide screw, and the outer walls of the first bevel gear and the second bevel gear are meshed and connected.
[0008] Preferably, a positioning block is fixedly provided on the outer wall of the rotating shaft, and the outer wall of the positioning block is provided with positioning holes, and multiple sets of positioning holes are provided.
[0009] Preferably, a fixing block is fixedly provided on the outer wall of the connecting seat, and a positioning screw is threadedly connected to the outer wall of the fixing block, with one end of the positioning screw being inserted into the corresponding positioning hole.
[0010] Preferably, the cleaning structure includes a cleaning brush and a squeezing block. A connecting block is fixedly provided on the outer wall of the cleaning brush, and the squeezing block is fixedly provided at the bottom of the connecting block. A movable opening is provided at the top of the connecting seat, and the bottom of the squeezing block is movable and engaged in the movable opening.
[0011] Preferably, a compression spring is fixedly provided inside the movable port cavity, and the other end of the compression spring is fixedly provided on the outer wall of the compression block.
[0012] Preferably, the cleaning brush and connecting block are provided in multiple sets, and another set of connecting blocks is fixedly installed on the top of the connecting seat.
[0013] Preferably, the movable rollers are provided in multiple sets.
[0014] The technical solution provided by this utility model has the following advantages compared with the known prior art: In this invention, by setting the connection relationship between the worktable, connecting seat, moving roller, first limiting plate, and second limiting plate, the user can place the steel bar to be processed on the moving roller at the top of the connecting seat and rotate the rotating shaft according to the specifications of the steel bar to be processed. This allows the outer walls of the first and second limiting plates to be close to the outer wall of the steel bar, which facilitates the restriction of the movement range of the steel bar. This helps to confine the steel bar within the preset processing path, preventing it from shifting or sliding during bending, ensuring the accuracy of the bending angle and dimensions. It also replaces manual hand-holding and fixation, avoiding work-related accidents caused by steel bar rebound or breakage. Furthermore, the movement of the steel bar and its passage through the cleaning brush cleans impurities from the steel bar surface, reducing the possibility of impurities entering the bending mechanism or affecting the contact effect between the steel bar and the mold. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the first limiting plate structure of this utility model; Figure 3 This is a cross-sectional view of the connecting seat structure of this utility model; Figure 4 This is a schematic diagram of the first bevel gear structure of this utility model; Figure 5 This is a schematic diagram of the positioning block structure of this utility model; Figure 6 This is a schematic diagram of the compression spring structure of this utility model.
[0017] Reference numerals: 1. Workbench; 101. Bending disc; 2. Connecting seat; 201. Moving roller; 202. Guide screw; 203. First bevel gear; 204. Rotating shaft; 205. Second bevel gear; 206. Positioning block; 207. Positioning hole; 208. Fixing block; 209. Positioning screw; 3. First limiting plate; 301. Connecting frame; 302. Moving block; 4. Second limiting plate; 401. Support rod; 5. Cleaning brush; 501. Connecting block; 502. Extrusion block; 503. Extrusion spring; 504. Moving port. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0019] The present invention will be further described below with reference to the embodiments.
[0020] See attached document Figure 1-6 ,include: The workbench 1 and connecting seat 2 are provided. A bending disc 101 is installed on the top of the workbench 1. One end of a reinforcing bar is inserted between two sets of positioning rods on the bending disc 101. Rotation of the bending disc 101 causes the positioning rods to press against the reinforcing bar, bending it. The connecting seat 2 is threaded onto the top of the workbench 1 via a threaded rod. A moving roller 201 is rotatably connected to the top of the connecting seat 2 via a rotating shaft. The reinforcing bar is placed on top of the moving roller 201. When the reinforcing bar moves towards the bending disc 101, it drives the moving roller 201 to rotate, reducing the friction between the reinforcing bar and the surface of the workbench 1, thus facilitating the processing of the reinforcing bar. An auxiliary unit is provided on the outer wall of the connecting seat 2, which includes: The limiting structure includes a guide screw 202, a first limiting plate 3, and a second limiting plate 4. The guide screw 202 is rotatably connected to the inner cavity of the connecting seat 2 via a bearing. A moving block 302 is threadedly connected to the outer wall of the guide screw 202, and a connecting frame 301 is fixedly installed on the outer wall of the moving block 302. The other end of the connecting frame 301 is fixedly connected to the outer wall of the first limiting plate 3. A support rod 401 is fixedly installed on the outer wall of the second limiting plate 4, and the other end of the support rod 401 is fixedly installed on the outer wall of the connecting seat 2. The user can adjust the distance between the first limiting plate 3 and the second limiting plate 4 according to the diameter of the steel bar to be processed, so as to restrict the movement path of the steel bar. During use, the guide screw 202 is rotatably connected to the inner cavity of the connecting seat 2 via a bearing. Rotating the screw 202 clockwise causes the moving block 302 to move toward the first bevel gear 203. The moving block 302 then moves the connecting frame 301, which in turn moves the first limiting plate 3 toward the second limiting plate 4. This brings the outer walls of the first and second limiting plates 3 and 4 closer to the outer wall of the reinforcing bar, thus restricting the movement path of the reinforcing bar. When the diameter of the reinforcing bar is large, rotating the guide screw 202 counterclockwise causes the first limiting plate 3 to move away from the second limiting plate 4, increasing the distance between the first and second limiting plates 3 and 4. This allows for easy adjustment based on the required specifications of the reinforcing bar, making it widely applicable and highly practical. The cleaning structure, which is located on top of the connecting seat 2, is used to clean impurities from the outer wall of the reinforcing steel.
[0021] A rotating shaft 204 is movably inserted into the outer wall of the connecting seat 2, and a second bevel gear 205 is fixedly installed on the outer wall of the rotating shaft 204. A first bevel gear 203 is fixedly installed on the outer wall of the guide screw 202, and the outer wall of the first bevel gear 203 meshes with the outer wall of the second bevel gear 205. In use, by rotating the rotating shaft 204, the second bevel gear 205 is driven to rotate, causing the rotating second bevel gear 205 to press against the first bevel gear 203, which in turn drives the guide screw 202 to rotate. This facilitates adjustment of the direction and point of action of the guide screw 202, making it convenient for users to operate and adjust.
[0022] A positioning block 206 is fixedly installed on the outer wall of the rotating shaft 204, and a positioning hole 207 is opened on the outer wall of the positioning block 206. Multiple sets of positioning holes 207 are provided, and the positioning holes 207 at different positions correspond to the limiting positions of the first limiting plate 3 at different positions, so that users can choose according to their needs.
[0023] A fixing block 208 is fixedly installed on the outer wall of the connecting seat 2. A positioning screw 209 is threadedly connected to the outer wall of the fixing block 208. One end of the positioning screw 209 is inserted into the corresponding positioning hole 207. In use, when the first limiting plate 3 moves to the position to be set, the positioning screw 209 is aligned with the corresponding positioning hole 207. By rotating the positioning screw 209, the positioning screw 209 moves towards the positioning block 206, so that the positioning screw 209 is inserted into and locked in the positioning hole 207, thereby restricting the position of the positioning block 206, thus fixing the application position of the first limiting plate 3 and ensuring the stable application of the first limiting plate 3.
[0024] The cleaning structure includes a cleaning brush 5 and a squeezing block 502. A connecting block 501 is fixedly installed on the outer wall of the cleaning brush 5, and the squeezing block 502 is fixedly installed at the bottom of the connecting block 501. A moving opening 504 is opened at the top of the connecting seat 2, and the bottom of the squeezing block 502 is movable and locked in the moving opening 504. When in use, the steel bar passes through the cleaning brush 5, and the cleaning brush 5 contacts the outer surface of the steel bar, so as to clean the impurities on the outer surface of the steel bar.
[0025] A compression spring 503 is fixedly installed inside the movable port 504, and the other end of the compression spring 503 is fixedly installed on the outer wall of the compression block 502. The compression block 502 is pushed towards the rotating shaft 204 by the pushing force of the compression spring 503, so that the moving compression block 502 drives the connecting block 501 to move, so that the connecting block 501 drives the cleaning brush 5 to stick tightly to the outer surface of the steel bar, which is beneficial to improving the cleaning effect.
[0026] Multiple sets of cleaning brushes 5 and connecting blocks 501 are provided. Another set of connecting blocks 501 is fixedly installed on the top of the connecting seat 2. The cleaning degree is further improved by the two sets of cleaning brushes 5 contacting the reinforcing bars.
[0027] Multiple sets of moving rollers 201 are provided to facilitate the movement of the reinforcing bars.
[0028] Working principle: During use, when the user places the steel bar to be processed onto the moving roller 201 at the top of the connecting seat 2, the user rotates the rotating shaft 204 clockwise, causing the second bevel gear 205 to rotate clockwise. The clockwise rotation of the second bevel gear 205 presses against the first bevel gear 203, causing the first bevel gear 203 to drive the guide screw 202 to rotate clockwise. The clockwise rotation of the guide screw 202 causes the moving block 302 to move towards the first bevel gear 203. The moving block 302 then moves the connecting frame 301, causing the connecting frame 301 to move the first limiting plate 3 towards the second limiting plate 4. This brings the outer walls of the first limiting plate 3 and the second limiting plate 4 close to the outer wall of the steel bar. When the diameter of the steel bar is large, the... The guide screw 202 rotates counterclockwise, causing the first limiting plate 3 to move away from the second limiting plate 4, thus increasing the distance between the first limiting plate 3 and the second limiting plate 4. This allows for self-adjustment based on the required specifications of the steel bars and facilitates limiting the movement range of the steel bars. By pushing the steel bars forward, they move forward along the moving roller 201, which facilitates support for the steel bars and reduces the friction between the steel bars and the surface of the worktable 1 during movement. This helps to confine the steel bars within the preset processing path, preventing them from shifting or sliding during bending, ensuring the accuracy of bending angles and dimensions. It also replaces manual hand-holding for fixing, preventing work-related injuries caused by steel bar rebound or breakage, and reducing the physical burden on workers from long-term operation. In use, the reinforcing bar is placed between the two sets of cleaning brushes 5, and the squeezing spring 503 pushes the squeezing block 502 toward the rotating shaft 204. The moving squeezing block 502 drives the connecting block 501 to move, so that the connecting block 501 drives the cleaning brush 5 to stick tightly to the outer surface of the reinforcing bar. By pushing the reinforcing bar, the reinforcing bar moves on the connecting seat 2, and the cleaning brush 5 cleans the impurities on the surface of the reinforcing bar, reducing the phenomenon of impurities entering the bending mechanism or affecting the contact effect between the reinforcing bar and the mold.
[0029] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.
Claims
1. A steel bar bending auxiliary device for building construction, comprising a workbench (1) and a connecting seat (2), wherein a bending disc (101) is provided on the top of the workbench (1), and the connecting seat (2) is threadedly tightened to the top of the workbench (1) by a threaded rod, characterized in that, The top of the connecting seat (2) is rotatably connected to a movable roller (201) via a rotating shaft. An auxiliary unit is provided on the outer wall of the connecting seat (2), and the auxiliary unit includes: The limiting structure includes a guide screw (202), a first limiting plate (3), and a second limiting plate (4). The guide screw (202) is rotatably connected to the inner cavity of the connecting seat (2) via a bearing. A moving block (302) is threadedly connected to the outer wall of the guide screw (202), and a connecting frame (301) is fixedly provided on the outer wall of the moving block (302). The other end of the connecting frame (301) is fixedly connected to the outer wall of the first limiting plate (3). A support rod (401) is fixedly provided on the outer wall of the second limiting plate (4), and the other end of the support rod (401) is fixedly provided on the outer wall of the connecting seat (2). The cleaning structure is set on top of the connecting seat (2) and is used to clean impurities from the outer wall of the steel reinforcement.
2. The auxiliary device for bending reinforcing bars in building engineering according to claim 1, characterized in that, The outer wall of the connecting seat (2) is movably inserted with a rotating shaft (204), and the outer wall of the rotating shaft (204) is fixedly provided with a second bevel gear (205). The outer wall of the guide screw (202) is fixedly provided with a first bevel gear (203), and the outer wall of the first bevel gear (203) meshes with the outer wall of the second bevel gear (205).
3. The auxiliary device for bending reinforcing bars in building engineering according to claim 2, characterized in that, The outer wall of the rotating shaft (204) is fixedly provided with a positioning block (206), and the outer wall of the positioning block (206) is provided with positioning holes (207), and multiple sets of positioning holes (207) are provided.
4. The auxiliary device for bending reinforcing bars in building engineering according to claim 3, characterized in that, The outer wall of the connecting seat (2) is fixedly provided with a fixing block (208), and the outer wall of the fixing block (208) is threadedly connected with a positioning screw (209), and one end of the positioning screw (209) is connected to and inserted into the corresponding positioning hole (207).
5. The auxiliary device for bending reinforcing bars in building engineering according to claim 1, characterized in that, The cleaning structure includes a cleaning brush (5) and a squeezing block (502). A connecting block (501) is fixedly provided on the outer wall of the cleaning brush (5), and the squeezing block (502) is fixedly provided at the bottom of the connecting block (501). A movable opening (504) is provided on the top of the connecting seat (2), and the bottom of the squeezing block (502) is movable and locked in the movable opening (504).
6. The auxiliary device for bending reinforcing bars in building engineering according to claim 5, characterized in that, A compression spring (503) is fixedly installed inside the movable port (504), and the other end of the compression spring (503) is fixedly installed on the outer wall of the compression block (502).
7. The auxiliary device for bending reinforcing bars in building engineering according to claim 6, characterized in that, The cleaning brush (5) and connecting block (501) are provided in multiple sets, and another set of connecting blocks (501) is fixedly installed on the top of the connecting seat (2).
8. The auxiliary device for bending reinforcing bars in building engineering according to claim 1, characterized in that, The moving roller (201) is provided in multiple sets.