A building steel bar bending device

Abstract

This application belongs to the field of rebar bending technology and discloses a rebar bending device for construction, including a base frame and a worktable. The worktable has a horizontally oriented strip-shaped hole on its surface, within which a slider is slidably mounted. A first drive shaft is vertically rotatably mounted on the slider, and a second drive shaft is vertically rotatably mounted on the worktable surface. The line connecting the first and second drive shafts coincides with the straight line along the length direction of the strip-shaped hole. The tops of the first and second drive shafts are higher than the worktable surface and are equipped with bending components. A drive assembly is located at the bottom of the worktable to drive the first and second drive shafts to rotate synchronously in opposite directions. An adjustment assembly for driving the slider to slide is also located on the worktable. By setting two sets of bending components and driving them synchronously, the rebar can be bent at two locations simultaneously, improving the efficiency of rebar bending and reducing labor and time costs.

Description

Technical Field

[0001] This utility model relates to the field of building material processing technology, and in particular to a steel bar bending device for buildings. Background Technology

[0002] As a key material for constructing concrete structures in the building construction field, steel reinforcement plays a decisive role in project progress and structural safety. When using steel reinforcement, it needs to be cut and bent according to actual conditions to meet the requirements of different scenarios.

[0003] Most existing rebar bending equipment is a single-head rebar bending machine, meaning it only has one bending head. When bending rebar, it can only bend one place at a time. When bending U-shaped rebar or stirrups, it needs to be bent multiple times, resulting in low processing efficiency, extended construction period, and indirectly increased labor and time costs of the project. Utility Model Content

[0004] To solve the above problems, this utility model provides a building steel bar bending device.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a steel bar bending device for construction, including a base frame and a worktable mounted on the base frame. The worktable has a horizontally open strip-shaped hole on its surface, and a slider is slidably mounted in the strip-shaped hole. A first drive shaft is vertically rotatably mounted on the slider, and a second drive shaft is vertically rotatably mounted on the worktable surface. The line connecting the first drive shaft and the second drive shaft coincides with the straight line along the length direction of the strip-shaped hole. The tops of the first drive shaft and the second drive shaft are higher than the worktable surface and are provided with bending components. A drive component is provided at the bottom of the worktable to drive the first drive shaft and the second drive shaft to rotate synchronously in opposite directions. An adjustment component for driving the slider to slide is also provided on the worktable.

[0006] By adopting the above technical solution, a first drive shaft and a second drive shaft are set, and bending components are set at the top of the first drive shaft and the second drive shaft. The drive components drive the first drive shaft and the second drive shaft to rotate synchronously in opposite directions, so that the two sets of bending components can work simultaneously. This allows bending of two positions of the steel bar at one time. For U-shaped steel bars, they can be formed in one step, and for stirrups, two bends can be performed at one time, reducing the number of bends and thus greatly improving the efficiency of steel bar bending processing and reducing labor and time costs. Furthermore, by setting a strip hole and a slider, the slider is driven by an adjustment component to adjust the position of the first drive shaft relative to the second drive shaft within the strip hole, thereby adjusting the spacing between the two sets of bending components to meet the bending requirements of steel bars with different size parameters and improve adaptability.

[0007] Furthermore, the bending assembly includes a rotating disk disposed at the top of a first drive shaft or a second drive shaft. A central positioning shaft and an eccentric rotating shaft are spaced apart on the rotating disk. The central positioning shaft is coaxially arranged with the rotating disk. In the initial state, the line connecting the central positioning shaft and the eccentric rotating shaft is perpendicular to the length direction of the strip hole.

[0008] By adopting the above technical solution, a rotating disk, a central positioning shaft, and an eccentric rotating shaft are set up. When the drive assembly drives the drive shaft to rotate, the rotating disk rotates synchronously with the drive shaft, and the eccentric rotating shaft rotates around the central positioning shaft, bending the steel bars between the central positioning shaft and the eccentric rotating shaft.

[0009] Furthermore, the eccentric rotating shaft is used to mount rotating sleeves with different wall thicknesses.

[0010] By adopting the above technical solution, rotating sleeves with different wall thicknesses are set on the eccentric rotating shaft, thereby changing the distance between the central positioning shaft and the eccentric rotating shaft to accommodate steel bars of different diameters.

[0011] Furthermore, the adjustment assembly includes a guide rod and a lead screw rotatably disposed within the strip-shaped hole. The length direction of the guide rod and the lead screw is consistent with the length direction of the strip-shaped hole and are respectively disposed on both sides of the first drive shaft. The slider is generally T-shaped, and a nut seat and a guide seat are respectively provided at the step of the wing plate and the web plate. The nut seat is provided with a threaded hole that cooperates with the lead screw, and the guide seat is provided with a guide hole that cooperates with the guide rod. The end of the lead screw away from the second drive shaft passes through the worktable and is provided with a rotating handwheel.

[0012] By adopting the above technical solution, a guide rod, a lead screw, a nut seat, a guide seat, and a rotating handwheel are set up. Through the helical engagement between the nut seat and the lead screw, the nut seat can move along the length of the lead screw when the rotating handwheel drives the lead screw to rotate, thereby driving the slider to slide in the strip hole. The guide seat and the guide rod cooperate to guide and support the sliding of the slider to ensure the stability of the slider movement.

[0013] Furthermore, support plates are provided on both sides of the bottom of the strip hole, and the bottom surfaces of the nut seat and the guide seat are slidably engaged with the support plates on both sides.

[0014] By adopting the above technical solution and setting a support plate to provide sliding support for the bottom surface of the nut seat and the guide seat, the stability of the slider movement is further improved.

[0015] Furthermore, the drive assembly includes a drive motor mounted on the bottom surface of the worktable. The output shaft of the drive motor is connected to a dual-output shaft reducer. A first bevel gear is mounted on the output shaft of the dual-output shaft reducer near the second drive shaft. A second bevel gear is mounted on the lower end of the second drive shaft. The first bevel gear meshes with the second bevel gear. Mounting plates are provided on the bottom surface of the worktable, extending downward from both ends of the strip-shaped hole. A spline shaft is rotatably mounted between the two mounting plates. One end of the spline shaft near the dual-output shaft reducer passes through the mounting plate and connects to the output shaft on the corresponding side of the dual-output shaft reducer. A sliding plate is provided on the slider, and a spline sleeve is rotatably mounted on the lower part of the sliding plate. A spline groove that mates with the spline shaft is provided inside the spline sleeve, and it is slidably mounted on the spline shaft. A third bevel gear is mounted on the spline sleeve. A fourth bevel gear is mounted on the bottom end of the first drive shaft. The third bevel gear meshes with the fourth bevel gear. The cone surfaces of the first bevel gear and the third bevel gear have opposite directions.

[0016] By adopting the above technical solution, a drive motor, a dual-output shaft reducer, a first bevel gear, and a second bevel gear are provided. The first bevel gear and the second bevel gear mesh to drive the second drive shaft to rotate. A mounting plate, a spline shaft, a spline sleeve, a third bevel gear, and a fourth bevel gear are provided. The output shaft of the dual-output shaft reducer drives the spline shaft to rotate, thereby driving the spline sleeve and the third bevel gear to rotate, which in turn drives the first drive shaft to rotate through the fourth bevel gear. When the slider slides in the strip hole, the sliding plate moves synchronously with the slider, thereby driving the spline sleeve to slide on the spline shaft. This ensures that the third bevel gear and the fourth bevel gear are always in a meshing state when the slider slides.

[0017] Furthermore, a support platform is provided between the second drive shaft and the strip hole, and an arc support groove is provided on the support platform.

[0018] By adopting the above technical solution, a support platform and an arc support groove are set up to support the steel reinforcement between the two sets of bending components.

[0019] Furthermore, a T-shaped slide groove is provided on the side of the worktable away from the first drive shaft on the side of the second drive shaft. A T-shaped slide plate is provided in the T-shaped slide groove along its length direction. A sliding groove is provided on the T-shaped slide plate along its length direction. A sliding seat is slidably provided in the sliding groove. A positioning post is provided on the sliding seat. A positioning plate is rotatably provided on the positioning post.

[0020] By adopting the above technical solution, a T-shaped chute, a T-shaped sliding plate, a sliding groove, a sliding seat, a positioning post, and a positioning plate are set up. The position of the positioning post and the positioning plate is adjusted by the sliding seat sliding within the sliding groove, thereby adjusting the distance between the positioning plate and the second drive shaft to position the reinforcing bar. When the reserved reinforcing bars at both ends are too long and the sliding distance of the sliding seat within the sliding groove is insufficient for adjustment, the T-shaped sliding plate can be pulled out from the T-shaped chute to supplement the sliding length of the sliding seat.

[0021] In summary, this utility model has the following beneficial effects: In this application, by setting a first drive shaft and a second drive shaft, and setting a bending component at the top of the first drive shaft and the second drive shaft, the first drive shaft and the second drive shaft are driven to rotate synchronously in opposite directions by the drive component, so that the two sets of bending components can work simultaneously. In this way, two positions of the steel bar can be bent at one time. For U-shaped steel bars, they can be formed in one step, and for stirrups, two bends can be performed at one time, reducing the number of bends, thereby greatly improving the efficiency of steel bar bending processing and reducing labor and time costs. Furthermore, by setting a strip hole and a slider, the slider is driven by the adjustment component to adjust the position of the first drive shaft relative to the second drive shaft in the strip hole, thereby adjusting the distance between the two sets of bending components to meet the bending requirements of steel bars with different size parameters and improve adaptability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the structure at the bottom of the workbench in an embodiment of this utility model, used to highlight the drive component;

[0024] Figure 3 This is a schematic diagram of the bending component according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram illustrating the structure of the adjustment component in an embodiment of this utility model;

[0026] Figure 5 This is a structural schematic diagram of an embodiment of the present invention to highlight the T-shaped groove, T-shaped slide plate, sliding seat, positioning post, and other components.

[0027] In the diagram: 10. Base frame; 20. Worktable; 21. Strip hole; 22. Slider; 23. First drive shaft; 231. Fourth bevel gear; 24. Second drive shaft; 241. Second bevel gear; 25. Support plate; 26. Support platform; 261. Arc support groove; 27. T-shaped slide; 28. T-shaped slide plate; 281. Sliding groove; 29. ​​Sliding seat; 291. Positioning post; 292. Positioning plate; 30. Bending assembly; 3 1. Rotating disk; 32. Central positioning shaft; 33. Eccentric rotating shaft; 34. Rotating sleeve; 40. Drive assembly; 41. Drive motor; 42. Double output shaft reducer; 43. First bevel gear; 44. Mounting plate; 45. Splined shaft; 46. Sliding plate; 47. Splined sleeve; 48. Third bevel gear; 50. Adjusting assembly; 51. Guide rod; 52. Lead screw; 53. Nut seat; 54. Guide seat; 55. Rotary handwheel. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] like Figure 1-5As shown in the figure, this application discloses a steel bar bending device, including a base frame 10 and a workbench 20 set on the base frame 10. The workbench 20 has a horizontally opened strip hole 21. A slider 22 is slidably arranged in the strip hole 21. A first drive shaft 23 is vertically rotatably arranged on the slider 22. A second drive shaft 24 is vertically rotatably arranged on the workbench 20. The tops of the first drive shaft 23 and the second drive shaft 24 are higher than the workbench 20 and are provided with bending components 30. In this way, the steel bars can be bent by two sets of bending components 30, and two nodes of the steel bars can be bent at one time. The bottom of the workbench 20 is equipped with a drive assembly 40 that drives the first drive shaft 23 and the second drive shaft 24 to rotate synchronously in opposite directions. This allows the two sets of bending assemblies 30 to work simultaneously, enabling simultaneous bending of two nodes on the reinforcing bar. For U-shaped reinforcing bars, this allows for one-time forming; for stirrups, two bends can be performed at once, reducing the number of bends and significantly improving the efficiency of reinforcing bar bending, thus lowering labor and time costs. The line connecting the first drive shaft 23 and the second drive shaft 24 coincides with the straight line along the length of the strip hole 21. An adjustment assembly 50 on the workbench 20 drives the slider 22 to slide, ensuring that the slider's movement does not affect the placement of the reinforcing bar. Adjusting the assembly 50 changes the position of the slider 22 within the strip hole 21, thereby adjusting the position of the first drive shaft 23 relative to the second drive shaft 24, and ultimately adjusting the spacing between the two sets of bending assemblies 30. This adaptability allows for bending of reinforcing bars with different dimensions and parameters.

[0030] Specifically, the bending assembly 30 includes a rotating disk 31 disposed at the top of the first drive shaft 23 or the second drive shaft 24, which rotates synchronously with the first drive shaft 23 or the second drive shaft 24. A central positioning shaft 32 and an eccentric rotating shaft 33 are spaced apart on the rotating disk 31. The central positioning shaft 32 is concentrically eccentric with the rotating disk 31, and the eccentric rotating shaft 33 is eccentrically arranged on the rotating disk 31. In the initial state, the line connecting the central positioning shaft 32 and the eccentric rotating shaft 33 is perpendicular to the length direction of the strip hole 21, ensuring that the reinforcing bar is placed along the working length direction, facilitating subsequent processing.

[0031] The bending assembly 30 also includes several rotating sleeves 34 with the same inner diameter as the eccentric rotating shaft 33 but different wall thicknesses. The rotating sleeves 34 with different wall thicknesses are fitted onto the eccentric rotating shaft 33. By fitting rotating sleeves 34 with different wall thicknesses, the distance between the central positioning shaft 32 and the eccentric rotating shaft 33 can be changed, thereby enabling the processing of steel bars of different diameters and improving adaptability.

[0032] The adjusting assembly 50 includes a guide rod 51 and a lead screw 52 rotatably disposed within the slotted hole 21. The length direction of the guide rod 51 and the lead screw 52 is consistent with the length direction of the slotted hole 21. One end of the lead screw 52 away from the second drive shaft 24 passes through the worktable 20 and is equipped with a rotating handwheel 55. The lead screw 52 can be driven to rotate by turning the rotating handwheel 55. The guide rod 51 and the lead screw 52 are respectively positioned on both sides of the first drive shaft 23 to avoid interference. The slider 22 has an overall T-shaped structure, and a nut seat 53 and a guide seat 54 are respectively provided at the steps of the wing plate and the web plate of the slider 22. The nut seat 53 is provided with a threaded hole that cooperates with the lead screw 52. When the rotating handwheel 55 is turned to drive the lead screw 52 to rotate, the nut seat 53 can be driven to move along the lead screw 52, ​​thereby driving the slider 22 to slide within the slotted hole 21. The guide seat 54 is provided with a guide hole that cooperates with the guide rod 51. When the slider 22 slides in the strip hole 21, it drives the guide seat 54 to slide on the guide rod 51, thereby guiding and supporting the slider 22 on the side away from the lead screw 52, ​​ensuring the stability of the slider 22's movement.

[0033] To prevent the guide rod 51 and lead screw 52 from bending and deforming under the weight of components such as the first drive shaft 23 and bending assembly 30, support plates 25 are protruding from both sides of the bottom of the strip hole 21. The bottom surfaces of the nut seat 53 and guide seat 54 are slidably engaged with the support plates 25 on both sides. In this way, the support plates 25 provide sliding support to the bottom surfaces of the nut seat 53 and guide seat 54, which reduces the stress on the guide rod 51 and lead screw 52 caused by the weight of the components on the slider 22, prevents the guide rod 51 and lead screw 52 from bending and deforming, and thus ensures the stability of the slider 22's movement.

[0034] The drive assembly 40 includes a drive motor 41 and a dual-output shaft reducer 42. The drive motor 41 and the dual-output shaft reducer 42 are fixedly mounted on the bottom surface of the workbench 20. The output shaft of the drive motor 41 is connected to the dual-output shaft reducer 42, thereby transmitting the power of the drive motor 41 to the two output shafts of the dual-output shaft reducer 42. A first bevel gear 43 is provided on the output shaft of the dual-output shaft reducer 42 near the second drive shaft 24, and a second bevel gear 241 is provided at the lower end of the second drive shaft 24. The first bevel gear 43 meshes with the second bevel gear 241, thereby driving the second bevel gear 241 to rotate through the drive motor 41, the dual-output shaft reducer 42, and the first bevel gear 43, which in turn drives the second drive shaft 24 to rotate, thereby driving the bending assembly 30 at the top of the second drive shaft 24 to rotate and bend the steel bar.

[0035] Mounting plates 44 are provided on the bottom surface of the worktable 20, extending downwards at both ends of the strip hole 21. A spline shaft 45 is rotatably mounted between the two mounting plates 44. One end of the spline shaft 45, near the dual-output shaft reducer 42, passes through the mounting plates 44 and connects to the output shaft on the corresponding side of the dual-output shaft reducer 42, thus allowing the dual-output shaft reducer 42 to drive the spline shaft 45 to rotate. A sliding plate 46 is provided on the slider 22, extending downwards. A spline sleeve 47 is rotatably mounted on the lower part of the sliding plate 46. The spline sleeve 47 has a spline groove that mates with the spline shaft 45 and is slidably fitted onto the spline shaft 45. With the cooperation of the spline groove and the spline shaft 45, the spline sleeve 47 can slide on the spline shaft 45 and also rotate synchronously with the spline shaft 45. A third bevel gear 48 is provided on the spline sleeve 47, and a fourth bevel gear 231 is provided at the bottom end of the first drive shaft 23. The third bevel gear 48 and the fourth bevel gear 231 mesh.

[0036] When the dual-output shaft reducer 42 drives the splined shaft 45 to rotate, the splined sleeve 47 rotates under the cooperation of the spline groove and the splined shaft 45, thereby driving the third bevel gear 48 to rotate. Through the fourth bevel gear 231, the first drive shaft 23 rotates, which in turn drives the bending assembly 30 at the top of the first drive shaft 23 to rotate and bend the steel bar. Specifically, the cone surfaces of the first bevel gear 43 and the third bevel gear 48 are opposite, so that the first drive shaft 23 and the second drive shaft 24 rotate in opposite directions, realizing reverse bending of both ends of the steel bar.

[0037] When the position of slider 22 is adjusted, the sliding plate 46 will move synchronously with slider 22, thereby driving the spline sleeve 47 to slide on the spline shaft 45. This ensures that the third bevel gear 48 and the fourth bevel gear 231 are always in mesh when slider 22 slides.

[0038] A further configuration is provided, in which a support platform 26 is provided between the second drive shaft 24 and the strip hole 21, and an arc support groove 261 is provided on the support platform 26. The lowest point of the bottom surface of the arc support groove 261 is flush with the top surface of the rotating disk 31, and the steel bar portion between the two sets of bending components 30 is supported by the arc support groove 261.

[0039] A T-shaped slide groove 27 is provided on the workbench 20 on the side of the second drive shaft 24 away from the first drive shaft 23. The outer end of the T-shaped slide groove 27 extends to the side of the workbench 20. A T-shaped slide plate 28 is arranged along its length within the T-shaped slide groove 27, allowing the T-shaped slide plate 28 to be pulled outward from the T-shaped slide groove 27. A sliding groove 281 is formed on the T-shaped slide plate 28 along its length. A sliding seat 29 is slidably disposed within the sliding groove 281. A positioning post 291 is disposed on the sliding seat 29, and a positioning plate 292 is rotatably disposed on the positioning post 291. By manually pushing the sliding seat 29 to slide within the sliding groove 281, the distance between the positioning post 291, the positioning plate 292, and the second drive shaft 24 can be adjusted. In this way, the positions of the positioning post 291 and the positioning plate 292 can be adjusted according to the required parameters of the bent steel bar, thereby positioning the steel bar. This eliminates the need for measurement each time, improving work efficiency. After the positioning post 291 moves to the designated position following the sliding seat 29, the positioning plate 292 can be rotated to position its surface on the extension line of the rebar processing position, thus positioning the end of the rebar. When the rebar being processed is long, and the sliding seat 29, with its sliding groove 281 at its outermost end, still cannot meet the distance requirement, the T-shaped sliding plate 28 can be pulled out from the T-shaped groove 27. This supplements the sliding length of the sliding seat 29 and extends the positioning distance of the positioning post 291. In this embodiment, the sliding fit between the T-shaped sliding plate 28 and the T-shaped groove 27, the sliding fit between the sliding seat 29 and the sliding groove 281, and the rotational fit between the positioning plate 292 and the positioning post 291 all have a certain frictional resistance, preventing easy movement without external force.

[0040] The operating principle of a steel bar bending device in this embodiment is as follows: The positions of the positioning column 291 and the first drive shaft 23 are adjusted according to the required dimensions of the steel bar. The position of the positioning column 291 is adjusted manually by pushing and pulling, and the position of the first drive shaft 23 is adjusted manually by turning the handwheel 55. Then, a rotating sleeve 34 with a suitable wall thickness is selected according to the required diameter of the steel bar. The steel bar to be processed is placed between the central positioning shaft 32 and the eccentric rotating shaft 33 of the two sets of bending components 30, and the end is aligned with the positioning plate 292 on the positioning column 291. Then, the drive motor 41 is started, which drives the first bevel gear 43 and the third bevel gear 48 to rotate synchronously via the double-output shaft reducer 42. The second drive shaft 24 and the first drive shaft 23 are driven to rotate outward via the second bevel gear 241 and the fourth bevel gear 231. The steel bar is bent by rotating the eccentric rotating shaft 33 and the rotating sleeve 34 around the central positioning shaft 32, thereby simultaneously completing the bending at two node positions and improving work efficiency.

[0041] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A steel bar bending device for construction, comprising a base frame (10) and a worktable (20) disposed on the base frame (10), characterized in that: The workbench (20) has a horizontally oriented strip hole (21) on its surface. A slider (22) is slidably disposed in the strip hole (21). A first drive shaft (23) is vertically rotatably disposed on the slider (22). A second drive shaft (24) is vertically rotatably disposed on the workbench (20). The line connecting the first drive shaft (23) and the second drive shaft (24) coincides with the straight line along the length direction of the strip hole (21). The tops of the first drive shaft (23) and the second drive shaft (24) are higher than the workbench (20) surface and are provided with a bending assembly (30). A drive assembly (40) is provided at the bottom of the workbench (20) to drive the first drive shaft (23) and the second drive shaft (24) to rotate synchronously in opposite directions. The workbench (20) also has an adjustment assembly (50) to drive the slider (22) to slide.

2. The steel bar bending device according to claim 1, characterized in that: The bending assembly (30) includes a rotating disk (31) disposed at the top of the first drive shaft (23) or the second drive shaft (24). A central positioning shaft (32) and an eccentric rotating shaft (33) are spaced apart on the rotating disk (31). The central positioning shaft (32) and the rotating disk (31) are arranged coaxially. In the initial state, the line connecting the central positioning shaft (32) and the eccentric rotating shaft (33) is perpendicular to the length direction of the strip hole (21).

3. The steel bar bending device according to claim 2, characterized in that: The eccentric rotating shaft (33) is used to mount rotating sleeves (34) with different wall thicknesses.

4. The steel bar bending device according to claim 1, characterized in that: The adjustment assembly (50) includes a guide rod (51) and a lead screw (52) rotatably disposed in the strip hole (21). The length direction of the guide rod (51) and the lead screw (52) is consistent with the length direction of the strip hole (21) and are respectively placed on both sides of the first drive shaft (23). The slider (22) is T-shaped, and a nut seat (53) and a guide seat (54) are respectively provided at the step of the wing plate and the web plate. The nut seat (53) is provided with a threaded hole that cooperates with the lead screw (52). The guide seat (54) is provided with a guide hole that cooperates with the guide rod (51). The end of the lead screw (52) away from the second drive shaft (24) passes through the worktable (20) and is provided with a rotating handwheel (55).

5. A steel bar bending device according to claim 4, characterized in that: Support plates (25) are protruding from both sides of the bottom of the strip hole (21), and the bottom surfaces of the nut seat (53) and the guide seat (54) are slidably engaged with the support plates (25) on both sides respectively.

6. A steel bar bending device according to claim 1, characterized in that: The drive assembly (40) includes a drive motor (41) mounted on the bottom surface of the worktable (20). The output shaft of the drive motor (41) is connected to a double-output shaft reducer (42). A first bevel gear (43) is mounted on the output shaft of the double-output shaft reducer (42) near the second drive shaft (24). A second bevel gear (241) is mounted on the lower end of the second drive shaft (24). The first bevel gear (43) meshes with the second bevel gear (241). Mounting plates (44) are provided on the bottom surface of the worktable (20) at both ends of the strip hole (21). A spline shaft (45) is rotatably mounted between the two mounting plates (44). The spline shaft (45) is located near the double-output shaft reducer. One end of the speed reducer (42) passes through the mounting plate (44) and is connected to the output shaft on the corresponding side of the double output shaft reducer (42). A sliding plate (46) is provided on the slider (22) and rotatably provided on the lower part of the sliding plate (46). A spline sleeve (47) is provided in the spline sleeve (47) to cooperate with the spline shaft (45) and is slidably sleeved on the spline shaft (45). A third bevel gear (48) is provided on the spline sleeve (47). A fourth bevel gear (231) is provided at the bottom end of the first drive shaft (23). The third bevel gear (48) meshes with the fourth bevel gear (231). The cone surfaces of the first bevel gear (43) and the third bevel gear (48) are opposite in direction.

7. A steel bar bending device according to claim 1, characterized in that: A support platform (26) is provided between the second drive shaft (24) and the strip hole (21), and an arc support groove (261) is provided on the support platform (26).

8. A steel bar bending device according to claim 1, characterized in that: A T-shaped groove (27) is provided on the side of the worktable (20) away from the first drive shaft (23) on the second drive shaft (24). A T-shaped slide plate (28) is arranged in the T-shaped groove (27) along its length direction. A sliding groove (281) is provided on the T-shaped slide plate (28) along its length direction. A sliding seat (29) is slidably arranged in the sliding groove (281). A positioning post (291) is provided on the sliding seat (29). A positioning plate (292) is rotatably arranged on the positioning post (291).

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