A reinforcing steel bending device for construction engineering

Abstract

The utility model discloses a building engineering steel bar bending device belongs to bending device technical field. Including bending table and conveying frame, the top of bending table is installed with conveying frame, the outer wall on conveying frame is installed with shearing frame, bending table top of one side of conveying frame is installed with bending frame, the outer wall on bending frame is installed with bending hydraulic cylinder, the output of bending hydraulic cylinder is installed with drive shaft, the surface of drive shaft is covered with pull arm, the outer wall on bending frame below pull arm is installed with rotating shaft. The utility model not only has realized bending device convenient and quick bending of building engineering steel bar, has facilitated bending device convenient conveying of building engineering steel bar, has facilitated a certain degree to the straightening of steel bar, and has facilitated bending device convenient and quick shearing of building engineering steel bar, has improved the efficiency of steel bar bending and shearing.

Description

Technical Field

[0001] This utility model relates to the field of bending device technology, specifically a steel bar bending device for building engineering. Background Technology

[0002] Reinforcing bars refer to steel materials used in reinforced concrete and prestressed reinforced concrete, with a circular cross-section, sometimes square with rounded corners. They include plain round bars, ribbed bars, and twisted bars. Reinforcing bars for reinforced concrete refer to straight or coiled steel materials used for reinforcing concrete, and their shapes are divided into plain round bars and deformed bars, delivered in straight bars or coils.

[0003] For example, the steel bar bending device for construction engineering disclosed in the patent announcement number CN222094578U relates to the field of steel bar processing technology. It includes a processing table with two support blocks at its upper end, a T-shaped fixing block at its upper end, a scale plate at the upper end of the T-shaped fixing block, a sliding baffle on the outer side of the T-shaped fixing block, a bolt for fixing the sliding baffle at its front end, a motor at the front end of the processing table, a bidirectional threaded rod penetrating the processing table at the output end of the motor, two moving blocks on the outer surface of the bidirectional threaded rod, a clamping block on one side of each moving block, and a connection at the upper end of the processing table.

[0004] Although it achieves the advantages of a steel bar bending device for construction engineering, such as easy adjustment of the bending length of steel bars, easy clamping and fixing of steel bars, and efficient bending of steel bars.

[0005] However, this does not solve the problem that existing bending devices of this type are generally not conducive to the convenient and quick bending of steel bars in construction projects, are not convenient for the convenient transportation of steel bars, are not convenient for the correction of steel bars to a certain extent, and are not convenient for the convenient and quick cutting of steel bars, thus affecting the efficiency of bending and cutting steel bars. Utility Model Content

[0006] The purpose of this utility model is to provide a steel bar bending device for construction engineering, so as to solve the problems mentioned in the background art that the bending device is not convenient for bending steel bars in construction engineering quickly and easily, not convenient for conveying steel bars in construction engineering, not convenient for straightening steel bars to a certain extent, and not convenient for cutting steel bars in construction engineering quickly and easily, thus affecting the efficiency of bending and cutting steel bars.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A steel bar bending device for construction engineering includes a bending table and a conveying frame. The conveying frame is installed at the top of the bending table, and a shearing frame is installed on the outer wall of the conveying frame. A bending frame is installed at the top of the bending table on one side of the conveying frame. A bending hydraulic cylinder is installed on the outer wall of the bending frame. A drive shaft is installed at the output end of the bending hydraulic cylinder. A pull arm is fitted on the surface of the drive shaft. A rotating shaft is installed on the outer wall of the bending frame below the pull arm. A bushing is movably fitted on the surface of the rotating shaft. A bending disc is fitted on the surface of the bushing. A limit block is fitted on the surface of the rotating shaft on one side of the bushing. A bending shaft is installed on the outer wall of the bending disc on one side of the pull arm. A transmission shaft is installed on the outer wall of the bending disc on one side of the pull arm, and the pull arm is connected to the bending disc via the transmission shaft.

[0009] Optionally, the top of the conveyor frame is symmetrically slidably mounted with sliding blocks, and upper limit wheels are movably mounted on the outer wall of each sliding block. Three sets of lower limit wheels with equal spacing are movably mounted on the outer wall of the conveyor frame below the upper limit wheels.

[0010] Optionally, a lower conveying shaft is movably mounted on the outer wall of the conveyor frame on one side of the lower limiting wheel, and the lower conveying shaft extends to the outside of the conveyor frame, with a lower conveying wheel fitted on the surface of the lower conveying shaft.

[0011] Optionally, an upper conveying shaft is movably installed on the outer wall of the conveyor frame above the lower conveying shaft, and the upper conveying shaft extends to the outside of the conveyor frame. An upper conveying wheel is fitted on the surface of the upper conveying shaft, and a limit frame is symmetrically installed on the outer wall of the conveyor frame on one side of the upper conveying shaft.

[0012] Optionally, an adjusting cylinder is installed at the top of the conveyor frame on one side of the sliding block, and the output end of the adjusting cylinder is connected to the sliding block. A servo motor is installed on the outer wall of the conveyor frame on one side of the shearing frame, and the output end of the servo motor is connected to the lower conveyor shaft.

[0013] Optionally, a drive gear is fitted on the surface of the lower conveyor shaft on one side of the servo motor, and a driven gear is fitted on the surface of the upper conveyor shaft above the drive gear, with the drive gear and the driven gear meshing.

[0014] Optionally, a shearing hydraulic cylinder is installed on the outer wall of the shearing frame, a power shaft is installed at the output end of the shearing hydraulic cylinder, a drive block is installed on the outer wall of the power shaft, and transmission arms are installed on the outer walls of both the shearing frame and the drive block. A hinge shaft is installed on the outer wall of one set of transmission arms, and one set of transmission arms is movably connected to another set of transmission arms through the hinge shaft.

[0015] Optionally, a shearing arm is movably mounted on the outer wall of the transmission arm near the hinge shaft, and a support shaft is mounted on the outer wall of the shearing arm near the transmission arm.

[0016] Optionally, the shear arm is movably connected to the transmission arm via a support shaft, and a limit plate is provided on the outside of the transmission arm on one side of the shear arm, and the limit plate is connected to the shear arm.

[0017] Optionally, limiting shafts are symmetrically installed on the outer wall of the limiting plate near the shear arm, and the limiting shafts are all movably connected to the shear arm on the adjacent side.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the bending device not only realizes the convenient and fast bending of steel bars in building engineering, facilitates the convenient transportation of steel bars in building engineering, and facilitates the straightening of steel bars to a certain extent, but also facilitates the convenient and fast cutting of steel bars in building engineering, thus improving the efficiency of bending and cutting steel bars.

[0019] The steel bars used in construction projects are pulled between multiple sets of upper and lower limit wheels, through the interior of two sets of limit frames and between two sets of shearing arms, and then to the surface of the limit block. The bending hydraulic cylinder drives the pull arm to rotate via the drive shaft, and the pull arm drives the bending disc to rotate via the transmission shaft. The bending disc drives the bending shaft to rotate. With the limit block limiting the steel bars, the bending shaft drives the steel bars to rotate, which facilitates the bending of the steel bars. This bending device enables convenient and rapid bending of steel bars in construction projects, improving the efficiency and convenience of steel bar bending.

[0020] The adjusting cylinder drives the sliding block to move, and the conveyor frame provides sliding support for the sliding block, facilitating the convenient movement of the two sets of sliding blocks and the upper limit wheel. This facilitates the limiting of the rebar with the cooperation of the lower and upper limit wheels, and to a certain extent, the straightening of the rebar. The servo motor drives the lower conveyor shaft to rotate, which in turn drives the lower conveyor wheel to rotate. Simultaneously, the lower conveyor shaft drives the drive gear to rotate, which in turn drives the driven gear to rotate. The driven gear drives the upper conveyor shaft to rotate, which in turn drives the upper conveyor wheel to rotate. This facilitates the conveying of the rebar in the cooperation of the upper and lower conveyor wheels, enabling convenient conveying of the rebar in the bending device, facilitating the straightening of the rebar to a certain extent, and improving the bending effect of the rebar bending device.

[0021] The shearing hydraulic cylinder drives the drive block to move via the power shaft. The drive block drives a set of transmission arms to rotate around the hinge shaft. The set of transmission arms drives a set of shearing arms to rotate around the limit shaft via the support shaft. The limit plate provides movable support for the limit shaft, so that one set of shearing arms can shear the steel bars in cooperation with the other set of shearing arms. The limit frame provides limit support for the steel bars, realizing convenient and fast shearing of steel bars in construction projects by the bending device, improving the efficiency of steel bar shearing and the convenience of steel bar shearing by the bending device. Attached Figure Description

[0022] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0023] Figure 1 This is a front view structural diagram of the present utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the conveyor frame of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the driven gear of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the sliding block of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the shear arm of this utility model;

[0029] Figure 7 This is a three-dimensional structural diagram of the bending disc of this utility model;

[0030] Figure 8 This is a three-dimensional structural diagram of the pull arm of this utility model.

[0031] Figure label:

[0032] 1. Bending table; 2. Conveyor frame; 3. Shearing frame; 4. Bending frame; 5. Bending hydraulic cylinder; 6. Drive shaft; 7. Pull arm; 8. Transmission shaft; 9. Rotating shaft; 10. Bushing; 11. Limit block; 12. Bending disc; 13. Bending shaft; 14. Upper limit wheel; 15. Lower limit wheel; 16. Upper conveyor shaft; 17. Upper conveyor wheel; 18. Lower conveyor wheel; 19. Lower conveyor shaft; 20. Limit frame; 21. Adjusting cylinder; 22. Sliding block; 23. Servo motor; 24. Drive gear; 25. Driven gear; 26. Shearing hydraulic cylinder; 27. Power shaft; 28. Drive block; 29. ​​Transmission arm; 30. Hinge shaft; 31. Support shaft; 32. Shearing arm; 33. Limit plate; 34. Limit shaft.

[0033] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0034] The present invention provides a steel bar bending device for construction engineering, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; for some known technologies, those skilled in the art can also use other alternative methods to implement the invention. Furthermore, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0035] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0036] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0037] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0038] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0039] like Figures 1 to 8As shown, an embodiment of this utility model provides a steel bar bending device for construction engineering, including a bending table 1 and a conveying frame 2. The conveying frame 2 is installed at the top of the bending table 1, and a shearing frame 3 is installed on the outer wall of the conveying frame 2. A bending frame 4 is installed at the top of the bending table 1 on one side of the conveying frame 2. A bending hydraulic cylinder 5 is installed on the outer wall of the bending frame 4. A drive shaft 6 is installed at the output end of the bending hydraulic cylinder 5. A pull arm 7 is fitted on the surface of the drive shaft 6. A rotating shaft 9 is installed on the outer wall of the bending frame 4 below the pull arm 7. A bushing 10 is movably fitted on the surface of the rotating shaft 9. A bending disc 12 is fitted on the surface of the bushing 10. A limit block 11 is fitted on the surface of the rotating shaft 9 on one side of the bushing 10. A bending shaft 13 is installed on the outer wall of the bending disc 12 on one side of the pull arm 7. A transmission shaft 8 is installed on the outer wall of the bending disc 12 on one side of the pull arm 7, and the pull arm 7 is connected to the bending disc 12 through the transmission shaft 8.

[0040] The steel bars used in construction projects are pulled between multiple sets of upper limit wheels 14 and lower limit wheels 15, through the interior of two sets of limit frames 20 and between two sets of shear arms 32, and then to the surface of the limit block 11. When it is necessary to bend the steel bars, the bending hydraulic cylinder 5 is opened. Under the support of the bending frame 4, the bending hydraulic cylinder 5 drives the pull arm 7 to rotate via the drive shaft 6. The pull arm 7 drives the bending disc 12 to rotate via the transmission shaft 8. The bending frame 4 supports the rotating shaft 9, the rotating shaft 9 provides movable support to the bushing 10, and the bushing 10 provides movable support to the bending disc 12. The bending disc 12 drives the bending shaft 13 to rotate. With the limit block 11 limiting the steel bars, the bending shaft 13 drives the steel bars to rotate, which facilitates the bending of the steel bars. This device enables convenient and rapid bending of steel bars in construction projects, improving the efficiency and convenience of steel bar bending.

[0041] Sliding blocks 22 are symmetrically slidably mounted on the top of the conveyor frame 2. Upper limit wheels 14 are movably mounted on the outer wall of each sliding block 22. Three sets of equally spaced lower limit wheels 15 are movably mounted on the outer wall of the conveyor frame 2 below the upper limit wheels 14. A lower conveying shaft 19 is movably mounted on the outer wall of the conveyor frame 2 on one side of the lower limit wheels 15, and extends to the outside of the conveyor frame 2. A lower conveying wheel 18 is fitted onto the surface of the lower conveying shaft 19. An upper conveying shaft 16 is movably mounted on the outer wall of the conveyor frame 2 above the lower conveying shaft 19, and extends to the outside of the conveyor frame 2. A lower conveying wheel 18 is fitted onto the surface of the upper conveying shaft 16. There is an upper conveyor wheel 17. Limiting frames 20 are symmetrically installed on the outer wall of the conveyor frame 2 on one side of the upper conveyor shaft 16. Adjusting cylinders 21 are installed on the top of the conveyor frame 2 on one side of the sliding block 22, and the output end of the adjusting cylinder 21 is connected to the sliding block 22. A servo motor 23 is installed on the outer wall of the conveyor frame 2 on one side of the shearing frame 3, and the output end of the servo motor 23 is connected to the lower conveyor shaft 19. A drive gear 24 is fitted on the surface of the lower conveyor shaft 19 on one side of the servo motor 23. A driven gear 25 is fitted on the surface of the upper conveyor shaft 16 above the drive gear 24, and the drive gear 24 and the driven gear 25 mesh with each other.

[0042] When it is necessary to transport the reinforcing bars, open the two sets of adjusting cylinders 21. Supported by the conveying frame 2, the adjusting cylinders 21 drive the sliding blocks 22 to move. The conveying frame 2 provides sliding support for the sliding blocks 22, facilitating the convenient movement of the upper limit wheel 14 driven by the two sets of sliding blocks 22. This allows for easy adjustment of the distance between the lower limit wheel 15 and the upper limit wheel 14, facilitating the limiting of the reinforcing bars with the cooperation of the lower limit wheel 15 and the upper limit wheel 14, and facilitating a certain degree of straightening of the reinforcing bars. Open the servo motor 23, and supported by the conveying frame 2, the servo motor 23 drives the lower conveying shaft 19. The lower conveyor shaft 19 rotates, driving the lower conveyor wheel 18 to rotate. Simultaneously, the lower conveyor shaft 19 drives the drive gear 24 to rotate. Under the meshing of the drive gear 24 and the driven gear 25, the drive gear 24 drives the driven gear 25 to rotate, and the driven gear 25 drives the upper conveyor shaft 16 to rotate. The upper conveyor shaft 16 drives the upper conveyor wheel 17 to rotate, facilitating the conveying of steel bars with the cooperation of the upper conveyor wheel 17 and the lower conveyor wheel 18. This enables convenient conveying of steel bars in construction projects by the bending device, facilitates the straightening of steel bars to a certain extent, and improves the bending effect of the bending device on steel bars.

[0043] A shearing hydraulic cylinder 26 is installed on the outer wall of the shearing frame 3. A power shaft 27 is installed at the output end of the shearing hydraulic cylinder 26. A drive block 28 is installed on the outer wall of the power shaft 27. A transmission arm 29 is installed on the outer wall of both the shearing frame 3 and the drive block 28. A hinge shaft 30 is installed on the outer wall of one set of transmission arms 29. One set of transmission arms 29 is movably connected to another set of transmission arms 29 through the hinge shaft 30. A shearing arm 32 is movably installed on the outer wall of the transmission arm 29 near the hinge shaft 30. A support shaft 31 is installed on the outer wall of the shearing arm 32 near the transmission arm 29. The shearing arm 32 is movably connected to the transmission arm 29 through the support shaft 31. A limit plate 33 is provided on the outside of the transmission arm 29 on one side of the shearing arm 32. The limit plate 33 is connected to the shearing arm 32. Limit shafts 34 are symmetrically installed on the outer wall of the limit plate 33 near the shearing arm 32. The limit shafts 34 are movably connected to the shearing arm 32 on the adjacent side.

[0044] When it is necessary to cut the bent steel bars, the shearing hydraulic cylinder 26 is opened. Supported by the shearing frame 3, the shearing hydraulic cylinder 26 drives the drive block 28 to move via the power shaft 27. The drive block 28 drives a set of transmission arms 29 to rotate around the hinge shaft 30. The set of transmission arms 29 drives a set of shearing arms 32 to rotate around the limiting shaft 34 via the support shaft 31. The limiting plate 33 provides movable support for the limiting shaft 34, so that one set of shearing arms 32 can cut the steel bars in cooperation with the other set of shearing arms 32. The limiting frame 20 provides limiting support for the steel bars, realizing convenient and fast cutting of steel bars in construction projects by the bending device, improving the efficiency of steel bar cutting, and improving the convenience of steel bar cutting by the bending device.

[0045] The working principle of the technical solution provided by this utility model is as follows: Steel bars for construction projects are pulled between multiple sets of upper limit wheels 14 and lower limit wheels 15, through the interior of two sets of limit frames 20 and between two sets of shearing arms 32, and onto the surface of the limit block 11. When bending of the steel bars is required, the bending hydraulic cylinder 5 drives the pull arm 7 to rotate via the drive shaft 6. The pull arm 7 drives the bending disc 12 to rotate via the transmission shaft 8. The bending frame 4 supports the rotating shaft 9, and the bending disc 12 drives the bending shaft 13 to rotate. With the limit block 11 limiting the steel bars, the bending shaft 13 drives the steel bars to rotate, facilitating bending. When the steel bars need to be conveyed, the adjusting cylinder 21 drives the sliding block 22 to move. The conveying frame 2 provides sliding support for the sliding block 22, facilitating the convenient movement of the upper limit wheels 14 driven by the two sets of sliding blocks 22. This facilitates the limiting of the steel bars under the cooperation of the lower limit wheel 15 and the upper limit wheel 14, and facilitates the straightening of the steel bars to a certain extent. The servo motor 23 drives the lower conveyor shaft 19 to rotate, which in turn drives the lower conveyor wheel 18 to rotate. Simultaneously, the lower conveyor shaft 19 drives the drive gear 24 to rotate, which in turn drives the driven gear 25 to rotate. The driven gear 25 then drives the upper conveyor shaft 16 to rotate, which in turn drives the upper conveyor wheel 17 to rotate. This facilitates the conveying of the reinforcing bars in cooperation with the upper and lower conveyor wheels 17. When it is necessary to cut the bent reinforcing bars, the shearing hydraulic cylinder 26 drives the drive block 28 to move via the power shaft 27. The drive block 28 drives a set of transmission arms 29 to rotate around the hinge shaft 30. The set of transmission arms 29 drives a set of shearing arms 32 to rotate around the limit shaft 34 via the support shaft 31. The limit plate 33 provides movable support for the limit shaft 34, facilitating the shearing of the reinforcing bars by the cooperation of the other set of shearing arms 32. The limit frame 20 provides limit support for the reinforcing bars, thus completing the operation of the bending device.

[0046] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0047] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A reinforcing bar bending device for use in construction work, characterised in that: The device includes a bending table and a conveyor frame. A conveyor frame is mounted on the top of the bending table, and a shearing frame is mounted on the outer wall of the conveyor frame. A bending frame is mounted on the top of the bending table on one side of the conveyor frame. A bending hydraulic cylinder is mounted on the outer wall of the bending frame. A drive shaft is mounted on the output end of the bending hydraulic cylinder. A pull arm is fitted onto the surface of the drive shaft. A rotating shaft is mounted on the outer wall of the bending frame below the pull arm. A bushing is movably fitted onto the surface of the rotating shaft. A bending disc is fitted onto the surface of the bushing. A limit block is fitted onto the surface of the rotating shaft on one side of the bushing. A bending shaft is mounted on the outer wall of the bending disc on one side of the pull arm. A transmission shaft is mounted on the outer wall of the bending disc on one side of the pull arm, and the pull arm is connected to the bending disc via the transmission shaft.

2. The bending apparatus for constructional steel bars according to claim 1, characterized in that: The top of the conveyor frame is symmetrically and slidably equipped with sliding blocks, and upper limit wheels are movably installed on the outer wall of each sliding block. Three sets of lower limit wheels with equal spacing are movably installed on the outer wall of the conveyor frame below the upper limit wheels.

3. The bending apparatus for constructional steel bars according to claim 2, characterized in that: A lower conveying shaft is movably installed on the outer wall of the conveyor frame on one side of the lower limit wheel, and the lower conveying shaft extends to the outside of the conveyor frame. The surface of the lower conveying shaft is fitted with a lower conveying wheel.

4. The bending apparatus for constructional steel bars according to claim 3, characterized in that: An upper conveying shaft is movably installed on the outer wall of the conveying frame above the lower conveying shaft, and the upper conveying shaft extends to the outside of the conveying frame. An upper conveying wheel is fitted on the surface of the upper conveying shaft, and limit frames are symmetrically installed on the outer wall of the conveying frame on one side of the upper conveying shaft.

5. The bending apparatus for constructional steel bars according to claim 4, characterized in that: Each of the tops of the conveyor frame on one side of the sliding block is equipped with an adjusting cylinder, and the output end of the adjusting cylinder is connected to the sliding block. A servo motor is installed on the outer wall of the conveyor frame on one side of the shearing frame, and the output end of the servo motor is connected to the lower conveyor shaft.

6. The bending apparatus for constructional steel bars according to claim 5, characterized in that: A drive gear is mounted on the surface of the lower conveyor shaft on one side of the servo motor, and a driven gear is mounted on the surface of the upper conveyor shaft above the drive gear, with the drive gear and the driven gear meshing together.

7. The bending apparatus for constructional steel bars according to claim 1, characterized in that: A shearing hydraulic cylinder is installed on the outer wall of the shearing frame. A power shaft is installed at the output end of the shearing hydraulic cylinder. A drive block is installed on the outer wall of the power shaft. A transmission arm is installed on the outer wall of both the shearing frame and the drive block. A hinge shaft is installed on the outer wall of one set of transmission arms, and one set of transmission arms is movably connected to another set of transmission arms through the hinge shaft.

8. The bending apparatus for constructional steel bars according to claim 7, characterized in that: Each transmission arm has a shearing arm movably mounted on the outer wall near the hinge shaft, and each shearing arm has a support shaft mounted on the outer wall near the transmission arm.

9. The bending apparatus for constructional steel bars according to claim 8, characterized in that: The shearing arm is movably connected to the transmission arm via a support shaft, and a limit plate is provided on the outside of the transmission arm on one side of the shearing arm.

10. The bending apparatus for constructional steel bars according to claim 9, characterized in that: The limiting plate is connected to the shearing arm. Limiting shafts are symmetrically installed on the outer wall of the limiting plate near the shearing arm, and each limiting shaft is movably connected to the shearing arm on the adjacent side.

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