A reinforcing bar bending forming device for modular structure

Abstract

The application discloses a kind of for modular structure steel bar bending forming device, belong to prefabricated building structure technical field.It includes gear fixed assembly and inside rocker gear, rocker gear both ends are connected rocker;Gear fixed assembly both sides are connected first, second bending mechanism of gear connecting rod respectively.The first, second bending mechanism all contain integrated bending gear and bending plate, and the lower surface of bending plate is provided with crescent-shaped groove.Rocker gear is only engaged with the second bending gear, and the second bending gear is engaged with the first bending gear, to realize double-plate bending.Crescent-shaped groove is adapted to different diameter steel bars, and uniformly applies radial pressure, to avoid axial tension damage steel bar.The application uses pure mechanical transmission, and improves operation safety and maintenance convenience by detachable modular design (such as lock cover, bending plate), to solve the problems of low efficiency, poor adaptability, material fatigue and the like in traditional technology.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building structure technology, and in particular to a device for bending and forming steel bars for modular structures. Background Technology

[0002] In precast building construction, steel bar bending is a crucial process for ensuring structural strength and stability. Currently, existing steel bar bending technologies have several problems, such as:

[0003] Manual operation is inefficient and unsafe: Traditional rebar bending relies heavily on manual hand tools. When fixing the rebar through the limiting hole, the hole diameter needs to be slightly larger than the rebar diameter, causing the rebar to wobble during bending, affecting accuracy and efficiency. In addition, manual bending is labor-intensive, especially when working at heights. Traditional equipment is difficult to carry and requires repeated adjustments, further reducing efficiency. Moreover, it is prone to causing workplace injuries due to rebar slippage or equipment malfunction.

[0004] Inadequate design of fixing devices: Existing electric bending machines mostly use limiting holes or simple clamping structures. For example, "limiting holes require manual insertion and removal of reinforcing bars," which is cumbersome and difficult to adapt to reinforcing bars of different diameters, easily leading to loosening or displacement. Existing clamping structures (such as limiting holes and bolt tightening) are not adaptable to the diameter and shape of reinforcing bars, requiring frequent replacement of clamps or adjustment of limiting components. However, the adjustment steps are complicated and can easily affect the construction schedule.

[0005] Uneven stress and material fatigue: During traditional bending, steel bars are often subjected to both axial tension and radial pressure. For example, the traditional top pressure wheel design can cause the steel bars to be affected by tension, which can easily lead to material fatigue, deformation, local stress concentration, surface scratches or internal micro-cracks, and reduce service life.

[0006] Insufficient modular adaptability: Existing devices are mostly designed for specific scenarios. For example, although the fixed soil nail micro-bending device is adjustable, it lacks the function of quickly changing modules to adapt to different steel bar specifications, making it difficult to adapt to complex engineering needs (such as multi-angle bending and irregular steel bar processing).

[0007] Overall cost and maintenance issues: While electric equipment is highly efficient, it requires electricity and incurs maintenance costs; while manual devices are low-cost, their efficiency is limited. Currently, there is no ideal solution that combines the advantages of both, and traditional electric equipment lacks protective design (such as exposed transmission components), which can easily cause mechanical damage. Summary of the Invention

[0008] The purpose of this invention is to provide a device for bending and forming modular steel bars, which solves the problems mentioned in the background art and achieves efficient and safe bending of steel bars through the coordinated cooperation of various components.

[0009] To achieve the above objectives, the present invention provides a device for bending and forming modular structural steel bars, including a gear fixing assembly and a rocker gear disposed within the gear fixing assembly, wherein both ends of the rocker gear are connected to a rocker arm passing through the gear fixing assembly;

[0010] The gear fixing assembly has a first gear bending mechanism and a second gear bending mechanism respectively connected to both sides by a gear connecting rod.

[0011] Preferably, the gear fixing assembly includes a gear fixing frame and an upper locking cover disposed above the gear fixing frame, and a first limiting block and a second limiting block evenly distributed on both sides of the gear fixing frame.

[0012] Preferably, the width of the second limiting block is twice that of the first limiting block.

[0013] Preferably, both ends of the upper locking cover are provided with first holes, and the rocker arm passes through the first holes and is connected to the rocker arm gear; the top ends of the first limiting block and the second limiting block are provided with threaded holes, and the top end of the upper locking cover is also provided with threaded holes corresponding to the positions of the threaded holes, and the bolt passes through the threaded holes to connect the gear fixing bracket and the upper locking cover.

[0014] Preferably, the first gear bending mechanism includes an integrally formed first bending gear and a first bending plate, and the second gear bending mechanism includes an integrally formed second bending gear and a second bending plate, with crescent-shaped grooves formed on the lower surfaces of both the first bending plate and the second bending plate.

[0015] Preferably, the first bending gear and the second bending gear are misaligned and meshed, and the rocker gear is misaligned and meshed only with the second bending gear.

[0016] Preferably, the first limiting block and the second limiting block are provided with second holes on both sides, and the gear connecting rod passes through the second holes to connect with the first bending gear and the second bending gear respectively.

[0017] Therefore, the present invention employs the above-mentioned rebar bending and forming device for modular structures. Through gear transmission and modular structural design, compared with existing rebar bending and forming devices, the specific advantages are as follows:

[0018] (1) The present invention adopts a rocker-driven gear transmission design, which transforms human power into stable mechanical power, greatly reducing the workload of workers. It is especially suitable for high-altitude operations, eliminating the need to frequently move heavy equipment or adjust positions. The steel bar can be bent by shaking the rocker, avoiding the tedious steps of manually inserting and pulling steel bars and the risk of steel bar slippage. At the same time, the crescent-shaped groove of the bending plate fits tightly with the surface of the steel bar, replacing the traditional "loose fit" fixing method of the limiting hole, reducing shaking during bending. This not only improves processing accuracy but also avoids work-related accidents caused by uncontrolled steel bars, providing double protection for safety from both the operation process and structural design.

[0019] (2) In this invention, the crescent-shaped groove of the bending plate forms a wrapping fixation of the reinforcing bar through the arc-shaped contact surface, which can be adapted to reinforcing bars of a certain diameter. There is no need to replace the parts separately for different specifications, which significantly simplifies the operation process. In addition, the upper locking cover of the gear fixing component is connected to the limiting block by bolts, which is convenient to disassemble. When it is necessary to process special specifications or irregular reinforcing bars, the bending mechanism (such as bending plates with different groove curvatures) can be quickly replaced simply by loosening the bolts, which solves the problems of complicated adjustment steps and poor adaptability of traditional devices.

[0020] (3) The present invention uses the staggered meshing design of the first and second bending gears to enable the two bending plates to apply radial pressure in concert. The curved surface of the crescent-shaped groove distributes the pressure evenly on the surface of the steel bar, avoiding the generation of axial tension, thereby reducing material fatigue, surface scratches and internal micro-cracks, extending the service life of the steel bar, and ensuring the strength and stability of the prefabricated building structure.

[0021] (4) This invention adopts a purely mechanical transmission structure, which does not require power support, significantly reducing energy consumption and maintenance costs compared to electric equipment, while avoiding the construction restrictions of power supply; the closed design of the locking cover and gear fixing frame encloses the transmission components (such as gears and connecting rods), reducing the risk of mechanical injury from exposed parts, and combining the low cost and safety protection performance of manual tools. The design of detachable modular components (such as gear connecting rods and bending mechanisms) further reduces the difficulty of equipment maintenance and component replacement, meeting the needs of efficient construction and economic practicality in complex projects.

[0022] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0024] Figure 2 This is an exploded view of the overall structure of an embodiment of the present invention;

[0025] Figure 3This is a schematic diagram of the gear connection at the first angle according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the second angle structure of the gear connection according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the gear connection third angle structure according to an embodiment of the present invention;

[0028] Figure 6 This is a cross-sectional structural diagram of the gear connection according to an embodiment of the present invention;

[0029] Figure Labels

[0030] 1. Gear fixing assembly; 2. Rocker gear; 3. Rocker; 4. First gear bending mechanism; 5. Second gear bending mechanism; 6. Gear fixing frame; 7. Locking cover; 8. First limiting block; 9. Second limiting block; 10. First hole; 11. Threaded hole; 12. Bolt; 13. First bending gear; 14. First bending plate; 15. Second bending gear; 16. Second bending plate; 17. Crescent-shaped groove; 18. Second hole; 19. Gear connecting rod. Detailed Implementation

[0031] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in existing technology. The machinery, parts and equipment all adopt conventional models in existing technology. In addition, the circuit connection adopts conventional connection methods in existing technology, which will not be described in detail here.

[0034] Example

[0035] like Figures 1-6As shown, this embodiment provides a device for bending and forming modular steel bars, including a gear fixing assembly 1 and a rocker gear 2 disposed in the gear fixing assembly 1. The two ends of the rocker gear 2 are connected to a rocker 3 passing through the gear fixing assembly 1. Eight first gear bending mechanisms 4 and eight second gear bending mechanisms 5 are respectively connected to both sides of the gear fixing assembly 1 via gear connecting rods 19.

[0036] Specifically, the gear fixing assembly 1 includes a gear fixing frame 6 and a locking cover 7 positioned above the gear fixing frame 6. The gear fixing frame 6 and the locking cover 7 form the basic frame of the entire device, used to fix the position of the rocker gear 2 and the two gear bending mechanisms, preventing gear misalignment or detachment during transmission. Both ends of the locking cover 7 have first holes 10, through which the rocker 3 passes and connects to the rocker gear 2. Eight evenly distributed first limiting blocks 8 and eight second limiting blocks 9 are respectively provided on both sides of the gear fixing frame 6, with the width of the second limiting blocks 9 being twice that of the first limiting blocks 8. The top ends of the first limiting blocks 8 and the second limiting blocks 9 are provided with threaded holes 11, and the top end of the locking cover 7 also has threaded holes corresponding to the threaded holes 11. Bolts 12 pass through these threaded holes to connect the gear fixing frame 6 and the locking cover 7. The locking cover 7 is connected to the fixing frame by bolts 12, ensuring structural sealing, reducing exposed transmission components, and facilitating disassembly and maintenance.

[0037] The first gear bending mechanism 4 includes an integrally formed first bending gear 13 and a first bending plate 14. The second gear bending mechanism 5 includes an integrally formed second bending gear 15 and a second bending plate 16. Both the first bending plate 14 and the second bending plate 16 have slightly larger crescent-shaped grooves 17 on their lower surfaces. The bending plate is the component that directly contacts the reinforcing bar. The crescent-shaped grooves 17 on the lower surface conform to the curved surface of the reinforcing bar, increasing the contact area between the reinforcing bar and the bending plate, reducing swaying during bending, and solving the problem of reinforcing bar loosening and displacement affecting accuracy. The curvature of the grooves can adapt to reinforcing bars of a certain diameter, enhancing adaptability to reinforcing bars of different specifications.

[0038] The first bending gear 13 and the second bending gear 15 are staggered in mesh, and the rocker gear 2 only meshes with the second bending gear 15 in a staggered mesh. This allows power to be transmitted from the rocker gear 2 to the bending plate, ensuring the coordination of the bending action. The staggered meshing design avoids direct collision between the gear teeth, reducing wear and improving transmission smoothness. The rocker 3 provides a force application point for manual operation. By rocking it, the rocker gear 2 rotates, converting manual labor into mechanical transmission power, reducing labor intensity. Simultaneously, the rocker gear 2, meshing only with the second bending gear 15, serves as a power input node, controlling the bending rhythm of the bending mechanism.

[0039] Both sides of the first limiting block 8 and the second limiting block 9 have second holes 18, through which gear connecting rods 19 pass to connect with the first bending gear 13 and the second bending gear 15 respectively. The limiting blocks on both sides of the gear fixing frame 6, through which the gear connecting rods 19 pass, axially limit the first bending gear 13 and the second bending gear 15, fixing the bending gears to the gear fixing assembly 1, preventing gear misalignment during transmission, ensuring stable gear meshing, and guaranteeing bending accuracy. Simultaneously, the detachable connecting rod design facilitates replacement of bending mechanisms of different specifications, enhancing modular adaptability. The width of the second limiting block 9 is twice that of the first limiting block 8. Because the second bending gear 15 needs to mesh with both the rocker gear 2 and the first bending gear 13 simultaneously, it experiences greater force; the wider limiting block enhances support strength and prevents deformation.

[0040] Working principle: Based on the diameter of the rebar to be processed, select the first bending plate 14 and the second bending plate 16 that are compatible with the size of the crescent-shaped groove 17. The first bending gear 13 and the second bending gear 15 are respectively installed on the first limiting block 8 and the second limiting block 9 via the gear connecting rod 19, ensuring gear misalignment and meshing. Then, the rocker arm 3 passes through the hole in the upper locking cover 7 and connects to the rocker arm gear 2. The upper locking cover 7 is then closed, and the gear fixing bracket 6 is tightened to the upper locking cover 7 via bolts 12 passing through the threaded holes 11 in the limiting block and the upper locking cover 7, ensuring stable internal gear meshing. The rebar is placed between the crescent-shaped groove 17 of the first bending plate 14 and the second bending plate 16, and the position of the rebar is adjusted so that the part to be bent is aligned with the center of the groove. The rocker arm 3 is manually cranked, which drives the second bending gear 15 to rotate via the rocker arm gear 2. The second bending gear 15 then drives the first bending gear 13 to rotate synchronously. The two bending plates work together to apply pressure to the rebar, completing the bending process. If it is necessary to change the specifications of the reinforcing bars or adjust the bending angle, loosen bolt 12, remove the upper locking cover 7, replace the corresponding bending mechanism or adjust the gear meshing position, and then re-fix it.

[0041] This device is based on the principle of gear transmission and coordinated bending. Manually shaking the rocker arm 3 causes the rocker arm gear 2 to rotate around a fixed axis, converting manual power into rotational power. The rocker arm gear 2 meshes with the second bending gear 15 in a staggered manner, driving the second bending gear 15 to rotate. The first bending gear 13 meshes with the second bending gear 15 in a staggered manner, and the second bending gear 15 further drives the first bending gear 13 to rotate in synergy, achieving synchronous operation of the two bending mechanisms. The first bending plate 14 and the second bending plate 16 rotate with their corresponding gears. The crescent-shaped groove 17 on their lower surfaces tightly adheres to the surface of the reinforcing bar. The relative movement of the two plates applies uniform radial pressure to the reinforcing bar, causing it to bend along the arc of the groove. The limiting block of the gear fixing assembly 1 restricts the axial displacement of the bending gear through the gear connecting rod 19. The upper locking cover 7 is fastened to the overall structure by bolts 12, ensuring gear meshing accuracy and transmission stability, preventing the reinforcing bar from swaying or the equipment from shifting during bending, ultimately achieving efficient, precise, and safe reinforcing bar bending.

[0042] Therefore, this invention employs the aforementioned modular steel bar bending and forming device. A rocker arm drives a rocker gear, causing the misaligned second bending gear to rotate synchronously with the first bending gear. This allows the crescent-shaped grooves of the first and second bending plates to collaboratively apply uniform radial pressure to the steel bar, achieving precise bending. The modular design of the gear fixing assembly can adapt to different steel bar specifications, and since it is a mechanical transmission system requiring no electricity, it combines operational safety and ease of maintenance, effectively solving the problems of low efficiency, poor adaptability, and material damage in traditional technologies.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A device for bending and forming reinforcing bars in modular structures, characterized in that: It includes a gear fixing assembly and a rocker gear disposed within the gear fixing assembly, wherein both ends of the rocker gear are connected to a rocker arm passing through the gear fixing assembly; The gear fixing assembly is provided with a first gear bending mechanism and a second gear bending mechanism respectively connected to both sides by a gear connecting rod. The gear fixing assembly includes a gear fixing frame and an upper locking cover disposed above the gear fixing frame. The gear fixing frame is provided with a first limiting block and a second limiting block evenly distributed on both sides. The width of the second limiting block is twice that of the first limiting block; Both ends of the upper locking cover are provided with first holes, and the rocker arm passes through the first holes and is connected to the rocker arm gear; the top of the first limiting block and the second limiting block are provided with threaded holes, and the top of the upper locking cover is also provided with threaded holes corresponding to the positions of the threaded holes, and the bolt passes through the threaded holes to connect the gear fixing bracket and the upper locking cover; The first gear bending mechanism includes an integrally formed first bending gear and a first bending plate, and the second gear bending mechanism includes an integrally formed second bending gear and a second bending plate. The lower surfaces of the first bending plate and the second bending plate are both provided with crescent-shaped grooves.

2. The device for bending and forming modular steel bars according to claim 1, characterized in that: The first bending gear and the second bending gear are engaged in a misaligned meshing, and the rocker gear is engaged only in a misaligned meshing with the second bending gear.

3. The device for bending and forming modular structural steel bars according to claim 2, characterized in that: The first limiting block and the second limiting block each have a second hole on both sides, and the gear connecting rod passes through the second hole to connect with the first bending gear and the second bending gear respectively.

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