Steel bar bending device for constructional engineering
By using a hydraulically driven clamping mechanism and a deformation layer to compensate for the irregularity of the steel bar cross section, combined with a length adjustment mechanism and marking plate scale lines, the problem of insufficient bending accuracy of existing steel bar bending devices on steel bars of different diameters is solved, and high-precision steel bar bending operation is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-03
AI Technical Summary
Existing rebar bending devices are difficult to adapt to rebars of different diameters. Furthermore, during the bending process, the irregular cross-section of the rebar leads to unstable contact, easy slippage, affecting bending accuracy, reducing construction quality, and increasing costs.
The clamping mechanism, driven by a hydraulic cylinder, combined with a deformation layer and guide columns, compensates for the irregularity of the steel bar cross section through the deformation layer. In conjunction with the length adjustment mechanism and the scale lines on the marking plate, it ensures the bending accuracy and the precision of the length adjustment.
It improves the precision of rebar bending and the accuracy of length adjustment, reduces rebar swaying, and ensures construction quality and material utilization efficiency.
Smart Images
Figure CN224073228U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering equipment technology, and in particular to a steel bar bending device for building engineering. Background Technology
[0002] Steel bars are steel strips widely used in construction engineering. They possess high strength and toughness, and are mainly composed of elements such as iron and carbon. They are classified in various ways according to their strength grade and shape (e.g., plain round bars, ribbed bars). Their function is to enhance the strength of concrete structures and withstand tensile forces, making them an indispensable material in modern building structures.
[0003] A rebar bending device is a piece of equipment used in the construction industry to change the shape of rebar. It typically consists of a power mechanism, a clamping part, and a bending die. The power mechanism provides power to bend the rebar, the clamping part is used to fix the rebar and prevent it from shifting during bending, and the bending die determines the shape and angle of the bend to meet the different shape requirements of rebar in building structures.
[0004] In existing technologies, some rebar bending devices are difficult to adapt to rebars of different diameters. During the bending process, due to the irregular cross-section of the rebar, it is difficult to form a stable contact between the rebar and the clamping mechanism. This instability easily causes the rebar to slip during the clamping process. Once slippage occurs, it is impossible to accurately control the bending position and angle when bending the rebar, which seriously affects the bending accuracy, thereby reducing the construction quality of the building project, easily leading to material waste and additional construction costs. Therefore, a rebar bending device for building engineering is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a steel bar bending device for construction engineering, which aims to improve the problem that some existing steel bar bending devices are difficult to form a stable contact with the steel bar, resulting in reduced bending accuracy.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A steel bar bending device for construction engineering includes a bending machine body, a support plate fixedly connected to the top of the bending machine body, a limit column fixedly connected inside the support plate, a clamping mechanism installed inside the limit column, and adjustment plates fixedly connected to the left and right sides of the top of the bending machine body, with a length adjustment mechanism installed on the top of the adjustment plates.
[0008] The clamping mechanism includes a hydraulic cylinder, which is externally fixedly connected to the inside right side of the limiting post. A connecting plate is fixedly connected to the drive end of the hydraulic cylinder. Guide posts are fixedly connected to the four right corners of the connecting plate. Bolts are threaded to the left end of the guide posts. Four other bolts are threaded to the left inner wall of the limiting post. Two mounting plates are rotatably connected to the far sides of the multiple bolts. Clamping plates are fixedly connected to the near sides of the two mounting plates. Deformation layers are fixedly connected to the near sides of the two clamping plates. A rotating disk is rotatably connected to the outer wall of the limiting post.
[0009] As a further description of the above technical solution:
[0010] The length adjustment mechanism includes a detachable pin, the bottom of which is detachably connected to the top of the adjustment plate. A support frame is fixedly connected to the outside of the detachable pin. A T-shaped slide plate is slidably connected to the top of the support frame. A sliding plate is fixedly connected to the front side of the T-shaped slide plate. An L-shaped plate is fixedly connected to the right side of the sliding plate. A rack plate is fixedly connected to the front top of the support frame. A groove is provided on the rear side of the sliding plate. A paddle is fixedly connected to the inner front wall of the groove.
[0011] As a further description of the above technical solution:
[0012] A control box is fixedly connected to the front side of the bending machine body, a signal transmission line is fixedly connected to the top of the control box, a switch box is fixedly connected to the output end of the signal transmission line, and the outer wall of the switch box is in contact with the top inner wall of the control box.
[0013] As a further description of the above technical solution:
[0014] The four guide posts are slidably connected to the inner wall of the limiting post, the outer wall of the connecting plate is slidably connected to the inner wall of the limiting post, and the outer wall of the rotating disk is rotatably connected to the inner wall of the support plate.
[0015] As a further description of the above technical solution:
[0016] The left side of the mounting plate on the left side contacts the inner left side wall of the limiting post, and the right side of the mounting plate on the right side contacts the left side of the connecting plate.
[0017] As a further description of the above technical solution:
[0018] The rear side of the sliding plate is slidably connected to the top outer wall of the support frame, and the outer wall of the paddle contacts the outer wall of the rack plate;
[0019] As a further description of the above technical solution:
[0020] A label plate is fixedly connected to the top of the support frame. The surface of the label plate is provided with scale lines. The top rear side of the sliding plate is in contact with the front side of the label plate.
[0021] As a further description of the above technical solution:
[0022] Two brushes are fixedly connected to the inner wall of the front side of the groove, and the rear sides of the two brushes are in contact with the outer wall of the rack plate.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, after the reinforcing bar is placed inside the limiting column, the hydraulic cylinder is activated. Under the guidance of the guide column, the connecting plate drives the installation plate to move, and then the clamping plate clamps the reinforcing bar. Since the cross-section of the reinforcing bar is irregular, the deformation layer can deform according to the shape of the reinforcing bar, reducing the shaking of the reinforcing bar and effectively improving the bending accuracy of the reinforcing bar.
[0025] 2. In this utility model, the operator adjusts the bending length of the reinforcing bar by sliding the sliding plate. The scale lines on the marking plate make it easy to see the adjustment status intuitively. The paddle contacts the rack plate to provide length adjustment feedback. The brush prevents impurities from affecting the accuracy of the feedback. The L-shaped plate assists in positioning the reinforcing bar. The overall structure ensures the accuracy and reliability of the bending length adjustment of the reinforcing bar. Attached Figure Description
[0026] Figure 1 This is a perspective view of a steel bar bending device for building engineering proposed in this utility model;
[0027] Figure 2 This is a schematic diagram of the structure of a limiting column for a steel bar bending device for building engineering proposed in this utility model;
[0028] Figure 3 This is a schematic diagram of the support frame for a steel bar bending device for building engineering proposed in this utility model;
[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0030] Legend:
[0031] 1. Bending machine body; 2. Support plate; 3. Limiting post; 4. Rotary disc; 5. Adjusting plate; 6. Hydraulic cylinder; 7. Connecting plate; 8. Guide post; 9. Bolt; 10. Mounting plate; 11. Clamping plate; 12. Deformation layer; 13. Disassembly pin; 14. Support frame; 15. T-shaped sliding plate; 16. Sliding plate; 17. Marking plate; 18. Rack plate; 19. L-shaped plate; 20. Groove; 21. Paddle; 22. Brush; 23. Control box; 24. Signal transmission line; 25. Switch box. Detailed Implementation
[0032] 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.
[0033] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a steel bar bending device for construction engineering, including a bending machine body 1. A support plate 2 is fixedly connected to the top of the bending machine body 1. A limit post 3 is fixedly connected inside the support plate 2. The support plate 2 provides support and positioning for the limit post 3. The limit post 3 limits the position of the steel bar during the clamping process. A clamping mechanism is installed inside the limit post 3. Adjustment plates 5 are fixedly connected to the left and right sides of the top of the bending machine body 1. A length adjustment mechanism is installed on the top of the adjustment plate 5. The adjustment plate 5 provides a base for the installation of the length adjustment mechanism. A control box 23 is fixedly connected to the front of the bending machine body 1. A signal transmission line 24 is fixedly connected to the top of the control box 23. A switch box 25 is fixedly connected to the output end of the signal transmission line 24. The outer wall of the switch box 25 is in contact with the inner top wall of the control box 23. The main function of the signal transmission line 24 is to transmit signals between the control box 23 and the switch box 25, accurately transmitting the control signals issued by the switch box 25 to the control box 23. The operator can start, stop, or adjust the operating status of the device by operating the switch box 25. The main body 1 of the bending machine provides a platform for the installation of other components, supporting the top support plate 2, the left and right adjustment plates 5, and the front control box 23, etc., to ensure the stability of the entire device and enable the various components to work together to achieve the bending operation of the steel bars.
[0034] The clamping mechanism includes a hydraulic cylinder 6, which is externally fixedly connected to the right side of the limiting post 3. A connecting plate 7 is fixedly connected to the drive end of the hydraulic cylinder 6. The hydraulic cylinder 6 is the power source for the clamping mechanism; when activated, it generates power to push the connecting plate 7 to move to the left. The outer wall of the connecting plate 7 is slidably connected to the inner wall of the limiting post 3. Guide posts 8 are fixedly connected to the four corners of the right side of the connecting plate 7. These four guide posts 8 are slidably connected to the inner wall of the limiting post 3. The main function of the guide posts 8 is to provide guidance when the connecting plate 7 moves. Bolts 9 are threadedly connected to the left end of the guide posts 8. Four other bolts 9 are threadedly connected to the inner wall of the left side of the limiting post 3. Two mounting plates 10 are rotatably connected to the opposite sides of the bolts 9. The left side of the left mounting plate 10 contacts the inner wall of the left side of the limiting post 3, and the right side of the right mounting plate 10 contacts the left side of the connecting plate 7. The bolts 9 connect and fix the mounting plates 10. Clamping plates 11 are fixedly connected to the adjacent sides of the two mounting plates 10. The mounting plate 10 is used to provide an installation base for the clamping plate 11 and allows for the removal and replacement of different clamping plates 11. Under the push of the hydraulic cylinder 6, the connecting plate 7 can move to the left along the inner wall of the limiting post 3, and drive the right mounting plate 10 to move, thereby indirectly causing the clamping plate 11 to move to the left, thus clamping the reinforcing bar. A deformation layer 12 is fixedly connected to the adjacent side of the two clamping plates 11. The deformation layer 12 is made of silicone rubber. Due to the irregular cross-section of the reinforcing bar, the deformation layer 12 can deform according to the shape of the reinforcing bar when the clamping plate 11 clamps the reinforcing bar. This deformation compensation function can ensure that the clamping plate 11 is in full contact with the surface of the reinforcing bar, reduce the shaking of the reinforcing bar during the clamping process, and thus improve the accuracy of the entire device for bending the reinforcing bar. A rotating disk 4 is rotatably connected to the outer wall of the limiting post 3. The outer wall of the rotating disk 4 is rotatably connected to the inner wall of the support plate 2. The rotating disk 4 can generate torque during the bending process of the reinforcing bar, so that the reinforcing bar can change shape more smoothly when it is bent.
[0035] Reference Figure 1 , Figure 3 and Figure 4The length adjustment mechanism includes a disassembly pin 13, the bottom of which is detachably connected to the top of the adjustment plate 5. A support frame 14 is fixedly connected to the outside of the disassembly pin 13. A T-shaped slide plate 15 is slidably connected to the top of the support frame 14. A sliding plate 16 is fixedly connected to the front side of the T-shaped slide plate 15. The main function of the T-shaped slide plate 15 is to connect the sliding plate 16 to the support frame 14 and to move the sliding plate 16 by sliding on the support frame 14. The rear side of the sliding plate 16 is slidably connected to the top outer wall of the support frame 14. A marking plate 17 is fixedly connected to the top of the support frame 14. The surface of the marking plate 17 is provided with scale lines. The rear side of the top of the sliding plate 16 contacts the front side of the marking plate 17. The marking plate 17 provides workers with an intuitive reference for length adjustment. When the sliding plate 16 slides, workers can accurately know the adjustment status of the bending length of the rebar according to the scale lines on the marking plate 17, thereby accurately controlling the bending length of the rebar and improving work efficiency and quality. An L-shaped plate 19 is fixedly connected to the right side of the sliding plate 16. The L-shaped plate 19 serves as an auxiliary positioning tool for the reinforcing bars in the device. A rack plate 18 is fixedly connected to the top front side of the support frame 14. A groove 20 is formed on the rear side of the sliding plate 16. A lever 21 is fixedly connected to the front inner wall of the groove 20. The outer wall of the lever 21 contacts the outer wall of the rack plate 18. During the sliding of the sliding plate 16, the contact between the lever 21 and the rack plate 18 will produce a collision sound, which can provide feedback information on the length adjustment, allowing the operator to accurately grasp the adjustment of the bending length of the reinforcing bars and ensure the accuracy of the length adjustment. Two brushes 22 are fixedly connected to the front inner wall of the groove 20. The rear sides of the two brushes 22 contact the outer wall of the rack plate 18. When the sliding plate 16 slides, the brushes 22 can self-clean the rack plate 18, preventing the accumulation of dust or impurities on the rack plate 18 from affecting the contact between the lever 21 and the rack plate 18, thereby ensuring the accuracy of the length adjustment feedback.
[0036] Working principle: After placing multiple steel bars inside the limiting column 3, the hydraulic cylinder 6 is activated to generate power, which, in conjunction with the guiding action of the guide column 8, drives the connecting plate 7 to move to the left. This movement of the connecting plate 7 drives the right mounting plate 10 to move to the left, which in turn drives the right clamping plate 11 to move to the left and clamps the right clamping plate 11. This allows for the clamping of steel bars of different diameters. Due to the irregular cross-section of the steel bars, the deformation layer 12 is used to compensate for deformation and improve bending accuracy.
[0037] The length of the bent steel bar can be adjusted by sliding the sliding plate 16. The T-shaped sliding plate 15 connects the sliding plate 16 to the support frame 14. At the same time, the paddle 21 in the groove 20 contacts the rack plate 18 as the sliding plate 16 slides, providing feedback for length adjustment. The brushes 22 on both sides can self-clean the rack plate 18 while the sliding plate 16 slides. Together with the scale lines on the marking plate 17, it is convenient for workers to accurately adjust the bending length.
[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A reinforcing bar bending apparatus for construction work, comprising a bending machine main body (1), characterized in that: The top end of the bending machine body (1) is fixedly connected with a support plate (2), the inside of the support plate (2) is fixedly connected with a limiting column (3), the inside of the limiting column (3) is provided with a clamping mechanism, the top end of the bending machine body (1) is fixedly connected with an adjusting plate (5) on the left and right sides, and the top of the adjusting plate (5) is provided with a length adjusting mechanism. The clamping mechanism comprises a hydraulic cylinder (6), the outside of the hydraulic cylinder (6) is fixedly connected to the inside right side of the limiting column (3), the driving end of the hydraulic cylinder (6) is fixedly connected with a connecting plate (7), the right side of the connecting plate (7) is fixedly connected with a guide column (8) at four corners, the left end of the guide column (8) is threadedly connected with a bolt (9), the left side inner wall of the limiting column (3) is threadedly connected with another four bolts (9), the far side of a plurality of the bolts (9) is rotatably connected with two mounting plates (10), the proximal side of the two mounting plates (10) is fixedly connected with a clamping plate (11), the proximal side of the two clamping plates (11) is fixedly connected with a deformation layer (12), and the outer wall of the limiting column (3) is rotatably connected with a rotating disc (4).
2. A reinforcing bar bending apparatus for use in construction work according to claim 1, characterized in that: The length adjusting mechanism comprises a dismounting pin (13), the bottom of the dismounting pin (13) is detachably connected to the top of the adjusting plate (5), the outside of the dismounting pin (13) is fixedly connected with a support frame (14), the top of the support frame (14) is slidably connected with a T-shaped sliding plate (15), the front side of the T-shaped sliding plate (15) is fixedly connected with a sliding plate (16), the right side of the sliding plate (16) is fixedly connected with an L-shaped plate (19), the top front side of the support frame (14) is fixedly connected with a rack plate (18), the rear side of the sliding plate (16) is provided with a groove (20), and the front side inner wall of the groove (20) is fixedly connected with a push piece (21).
3. A reinforcing bar bending apparatus for use in construction work according to claim 1, characterized in that: The front side of the bending machine body (1) is fixedly connected with a control box (23), the top end of the control box (23) is fixedly connected with a signal transmission line (24), the output end of the signal transmission line (24) is fixedly connected with a switch box (25), and the outer wall of the switch box (25) is in contact with the top inner wall of the control box (23).
4. A reinforcing bar bending apparatus for use in construction work according to claim 1, characterized in that: Four guide columns (8) are slidably connected to the inner wall of the limiting column (3), the outer wall of the connecting plate (7) is slidably connected to the inner wall of the limiting column (3), and the outer wall of the rotating disc (4) is rotatably connected to the inner wall of the support plate (2).
5. A reinforcing bar bending apparatus for use in construction work according to claim 1, characterized in that: The left side of the left mounting plate (10) is in contact with the left side inner wall of the limiting column (3), and the right side of the right mounting plate (10) is in contact with the left side of the connecting plate (7).
6. A reinforcing bar bending apparatus for use in construction work according to claim 2, characterized in that: The rear side of the sliding plate (16) is slidably connected to the top outer wall of the support frame (14), and the outer wall of the push piece (21) is in contact with the outer wall of the rack plate (18).
7. A reinforcing bar bending apparatus for use in construction work according to claim 2, characterized in that: The top end of the support frame (14) is fixedly connected with an identification plate (17), the surface of the identification plate (17) is provided with a scale line, and the top rear side of the sliding plate (16) is in contact with the front side of the identification plate (17).
8. A reinforcing bar bending apparatus for use in construction work according to claim 2, characterized in that: The front side inner wall of the groove (20) is fixedly connected with two brushes (22), and the rear side of the two brushes (22) is in contact with the outer wall of the rack plate (18).