Steel bar bending auxiliary device convenient to operate

Abstract

The utility model discloses a reinforcing steel bar bending auxiliary device convenient to operate, which relates to the technical field of reinforcing steel bar bending tools, and comprises a support plate frame, the lower surface of the support plate frame is connected with a bottom plate through a screw, the center of the top surface of the bottom plate is fixedly connected with a shaft rod, and the outer surface of the shaft rod is rotatably connected with a turntable through a bearing; a rotating wheel is fixedly connected to the center of the top face of the rotating disc, a steel bar bending rod is fixedly connected to the top face of the rotating disc, a handle is connected to the top end of the steel bar bending rod, and an arc groove is formed in the top face of the supporting plate frame in a penetrating mode. A sliding rod and a pointer are driven to accurately position a preset angle at an angle scribed line, and a stop lever is used as a physical limiting piece to trigger bending to stop in real time; the overall structure ensures the accuracy of angle adjustment, the visual operation of the angle scribed line and the pointer is realized, and errors caused by artificial experience judgment are avoided.

Description

Technical Field

[0001] This utility model relates to the field of rebar bending tools, specifically an easy-to-operate rebar bending auxiliary device. Background Technology

[0002] In the construction engineering and machinery manufacturing industries, steel bars are a key building material, and their processing quality directly affects the safety and stability of engineering structures. Steel bar bending is the process of processing steel bars into specific shapes using mechanical or manual means to meet the reinforcement requirements, connection needs, or specific structural design of building components. It is indispensable in the process of forming the steel bar skeleton of components such as beams, columns, and foundations.

[0003] According to a search, Chinese patent document CN219541550U discloses a rebar bending auxiliary device. The device utilizes a servo motor to rotate a second bidirectional threaded rod, which in turn moves a second threaded block, thereby moving a gearbox. The gearbox's movement then moves a rotating shaft, which in turn moves a feeding wheel. This moving feeding wheel clamps and fixes the rebar, thus solving the problem of rebar slippage during bending.

[0004] However, in actual use, the aforementioned bending auxiliary device lacks a precise angle limiting mechanism, and the bending angle relies entirely on the operator's experience and judgment. In practice, different operators have different control over the angle, and even the same operator is prone to judgment errors after working for a long time, resulting in large errors in the bending angle of the rebar. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an easy-to-operate auxiliary device for bending steel bars.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an easy-to-operate rebar bending auxiliary device, comprising a support frame, a base plate connected to the lower surface of the support frame by screws, a shaft fixedly connected to the center of the top surface of the base plate, a turntable rotatably connected to the outer surface of the shaft via bearings, a wheel fixedly connected to the center of the top surface of the turntable, a rebar bending rod fixedly connected to the top surface of the turntable, a handle connected to the top end of the rebar bending rod, and an arc groove penetrating the top surface of the support frame, with the top surface of the support frame surrounding the arc groove. Angle lines are engraved along the axial direction. A sliding rod is slidably connected inside the arc groove. A pointer is fixedly connected to the top of the sliding rod. A stop bar is fixedly connected to the top surface of the pointer. A rotating plate is inserted into the bottom of the sliding rod. A worm gear is fixedly connected to the lower surface of the rotating plate. A worm is driven by the worm gear. A transmission rod is fixedly connected to both ends of the worm. A bevel gear box is connected to one end of the transmission rod. A rotating rod is rotatably connected inside the bevel gear box. A handwheel is fixedly connected to one end of the rotating rod. A steel bar positioning assembly and a side plate are provided on the lower surface of the support frame.

[0007] As described above, a steel bar positioning plate is welded to the top surface of the support frame, and ear plates are welded to the bottom of the support frame at the four corners. The upper surface of the ear plates is provided with mounting holes.

[0008] As described above, a circular hole is provided through the center of the top surface of the support frame, and the circular hole is clearance-fitted with the turntable. A nut is threadedly connected to the outer surface of the shaft near the top end.

[0009] As described above, the arc groove is coaxial with the wheel, and two side plates are fixedly connected to the lower surface of the support frame, with a transmission rod rotatably connected between the two side plates.

[0010] As described above, the bevel gear box is welded to the outer surface of one of the side plates, and the interior of the bevel gear box is provided with two meshing bevel gears, the center of one bevel gear is connected to a transmission rod, and the center of the other bevel gear is connected to a rotating rod.

[0011] As described above, the rebar positioning assembly includes a clamping plate, a movable block is bolted to the bottom of the clamping plate, a push rod is threaded to the outer surface of the movable block, a spring is sleeved on the outer surface of the push rod, a limit ring is fixedly connected to the outer surface of the push rod, and a ball head is fixedly connected to one end of the push rod relative to the movable block.

[0012] The aforementioned rebar positioning assembly further includes a side block and a sliding sleeve, which are welded to the lower surface of the support frame. The push rod is inserted into the interior of the side block and the sliding sleeve. An eccentric wheel is rotatably connected to the lower surface of the support frame via a shaft. A rotating handle is fixedly connected to the outer circumference of the eccentric wheel. A sliding groove is formed through the upper surface of the support frame.

[0013] Compared with existing technologies, this easy-to-operate rebar bending auxiliary device has the following advantages:

[0014] I. This utility model utilizes a rebar positioning plate against one end of the rebar. By rotating the handle, an eccentric wheel is driven, which in turn moves the clamping plate via a push rod, forming a bidirectional fixed structure with the rebar positioning plate. Combined with the elastic reset function of the spring, the clamping and releasing of the unbent end of the rebar can be completed quickly. This design requires no manual support, effectively preventing the rebar from slipping during bending. The positioning is firm and the operation is convenient, improving the stability and safety of the processing and reducing the intensity of manual labor.

[0015] II. This utility model, by rotating the handwheel, drives the slide bar and pointer to accurately position the preset angle at the angle markings through mechanical transmission components such as bevel gears, transmission rods, and worm gears in the bevel gear box. The stop bar acts as a physical limiter to trigger the bending stop in real time. The overall structure ensures the accuracy of angle adjustment, and the angle markings and pointer enable visual operation, avoiding errors caused by human experience judgment. This allows for standardized control of the bending angle each time, significantly improving the consistency and reliability of steel bar processing angles.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the explosive decomposition of this utility model;

[0019] Figure 3 This is a top view of the structure of this utility model;

[0020] Figure 4 This is a bottom view of the structure of this utility model;

[0021] Figure 5 For the present utility model Figure 2 A magnified schematic diagram of the structure of part A in the diagram;

[0022] Figure 6 This is a three-dimensional structural diagram of the rebar positioning component in this utility model.

[0023] In the diagram: 1. Support plate; 2. Base plate; 3. Shaft; 4. Turntable; 5. Rotary wheel; 6. Rebar bending rod; 7. Handle; 8. Arc groove; 9. Angle markings; 10. Sliding rod; 11. Pointer; 12. Stop bar; 13. Rotating plate; 14. Worm gear; 15. Worm; 16. Transmission rod; 17. Bevel gear box; 18. Rotating rod; 19. Handwheel; 20. Rebar positioning assembly; 201. Clamping plate; 202. Moving block; 203. Push rod; 204. Spring; 205. Limiting ring; 206. Ball head; 207. Side block; 208. Sliding sleeve; 209. Eccentric wheel; 210. Rotating handle; 21. Side plate; 22. Rebar positioning plate; 23. Ear plate; 24. Sliding groove. Detailed Implementation

[0024] 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.

[0025] like Figure 1-6 As shown, this utility model provides a technical solution: an easy-to-operate rebar bending auxiliary device, including a support frame 1, a base plate 2 connected to the lower surface of the support frame 1 by screws, a shaft 3 fixedly connected to the center of the top surface of the base plate 2, a turntable 4 rotatably connected to the outer surface of the shaft 3 via bearings, a wheel 5 fixedly connected to the center of the top surface of the turntable 4, a rebar bending rod 6 fixedly connected to the top surface of the turntable 4, a handle 7 connected to the top end of the rebar bending rod 6, an arc groove 8 penetrating the top surface of the support frame 1, and angle markings 9 engraved around the axis of the arc groove 8 on the top surface of the support frame 1. The slide bar 10 is slidably connected inside the groove 8. A pointer 11 is fixedly connected to the top of the slide bar 10. A stop bar 12 is fixedly connected to the top surface of the pointer 11. A rotating plate 13 is inserted into the bottom of the slide bar 10. A worm gear 14 is fixedly connected to the lower surface of the rotating plate 13. A worm 15 is driven by the worm gear 14. A transmission rod 16 is fixedly connected to both ends of the worm 15. A bevel gear box 17 is connected to one end of the transmission rod 16. A rotating rod 18 is rotatably connected inside the bevel gear box 17. A handwheel 19 is fixedly connected to one end of the rotating rod 18. A steel bar positioning assembly 20 and a side plate 21 are provided on the lower surface of the support frame 1.

[0026] like Figure 2 As shown, a steel bar positioning plate 22 is welded to the top surface of the support frame 1, and ear plates 23 are welded to the bottom of the support frame 1 at the four corners. The upper surface of the ear plates 23 is provided with mounting holes.

[0027] By setting up a rebar positioning plate 22 to abut against the rebar to be bent, the rebar positioning plate 22 can restrict the movement of the rebar during the subsequent bending process. Ear plates 23 are welded at the bottom of the support frame 1 near the four corners. Bolts can be inserted into the mounting holes on the upper surface of the ear plates 23, so that the ear plates 23 can be fixed to a platform on a certain plane. This makes it easy to fix the entire device, so that the device will not move during the subsequent rebar bending operation.

[0028] like Figures 1-3 As shown, a circular hole is provided through the center of the top surface of the support frame 1. The circular hole is clearance-fitted with the turntable 4. A nut is threadedly connected to the outer surface of the shaft 3 near the top.

[0029] By placing the steel bar to be bent into the gap between the turntable 5 and the steel bar bending rod 6, the steel bar abuts against the steel bar positioning plate 22. Then, by holding the handle 7, the steel bar bending rod 6 and the turntable 4 are driven to rotate around the axis of the shaft 3. In this way, the steel bar bending rod 6 and the turntable 4 can bend and shape the steel bar.

[0030] like Figures 2-5 As shown, the arc groove 8 is coaxial with the rotating wheel 5, and two side plates 21 are fixedly connected to the lower surface of the support frame 1. A transmission rod 16 is rotatably connected between the two side plates 21.

[0031] The bevel gear box 17 is welded to the outer surface of one of the side plates 21, and the inside of the bevel gear box 17 is provided with two meshing bevel gears, the center of one bevel gear is connected to the transmission rod 16, and the center of the other bevel gear is connected to the rotating rod 18.

[0032] Rotating the handwheel 19 drives the rotating rod 18 to rotate, which in turn drives one bevel gear in the bevel gear box 17 to rotate. This bevel gear drives another bevel gear to rotate, which in turn drives the transmission rod 16 to rotate. The transmission rod 16 drives the worm gear 15 to rotate, which in turn drives the worm wheel 14 to rotate. The worm wheel 14 is rotatably connected to the lower surface of the base plate 2 via a shaft, and the worm wheel 14 can drive the rotating plate 13 to rotate. The rotating plate 13 drives the sliding rod 10 to rotate within the arc groove 8, and the sliding rod 10 drives the pointer 11 to rotate, so that the pointer 11 can point to a certain mark on the angle scale 9; during bending... During the process, the bending of the steel bar will stop once it touches the stop bar 12. The position of the pointer 11 is precisely controlled by mechanical transmission, which in turn controls the position of the stop bar 12. Combined with the angle markings 9, the bending angle is visualized and precisely limited, avoiding angle errors caused by human experience. The bending angle can be adjusted by the handwheel 19 and indicated by the pointer 11 for standardized operation. At the same time, the stop bar 12, as a physical limiting device, can be triggered to stop in time when the steel bar is bent to the preset angle, ensuring the consistency and accuracy of the bending angle and improving the stability and reliability of the steel bar processing quality.

[0033] like Figure 6 As shown, the rebar positioning assembly 20 includes a clamping plate 201. A movable block 202 is bolted to the bottom of the clamping plate 201. A push rod 203 is threaded to the outer surface of the movable block 202. A spring 204 is sleeved on the outer surface of the push rod 203. A limit ring 205 is fixedly connected to the outer surface of the push rod 203. A ball head 206 is fixedly connected to one end of the push rod 203 relative to the movable block 202.

[0034] The rebar positioning assembly 20 also includes a side block 207 and a sliding sleeve 208. The side block 207 and the sliding sleeve 208 are welded to the lower surface of the support frame 1. The push rod 203 is inserted into the interior of the side block 207 and the sliding sleeve 208. An eccentric wheel 209 is rotatably connected to the lower surface of the support frame 1 via a shaft. A rotating handle 210 is fixedly connected to the outer circumference of the eccentric wheel 209. A sliding groove 24 is provided through the upper surface of the support frame 1.

[0035] Rotating the handle 210 drives the eccentric wheel 209 to rotate, which in turn contacts the ball head 206. The ball head 206 then moves the push rod 203, which in turn moves the moving block 202. The moving block 202 then moves the clamping plate 201. In this way, the clamping plate 201, together with the rebar positioning plate 22, can securely fix the unbent end of the rebar, preventing it from moving arbitrarily during subsequent bending. After the rebar is bent, rotating the handle 210 in the opposite direction causes the spring 204 to contact the limiting ring 205, which in turn causes the push rod 203 to retract, thereby causing the clamping plate 201 to retract as well. The overall structure is convenient and quick to operate, enabling the rebar to be positioned and avoiding the need for manual support during bending.

[0036] Working principle: First, the device is fixed to the work platform through the mounting holes on the ear plate 23. One end of the rebar to be bent is placed against the rebar positioning plate 22 and inserted into the gap between the rotating wheel 5 and the rebar bending rod 6. Then, the rotating handle 210 drives the eccentric wheel 209 to rotate, which pushes the moving block 202 and the clamping plate 201 to move through the ball head 206 and the push rod 203, thus fixing the unbent end of the rebar with the rebar positioning plate 22. Next, by rotating the handwheel 19, the device moves through the rotating rod 18 and the umbrella... The gearbox 17 is powered by a bevel gear, transmission rod 16, worm gear 15, worm wheel 14, rotating plate 13, and slide rod 10, which causes the pointer 11 to point to the preset angle scale on the angle mark 9, thus determining the position of the stop bar 12. Then, the handle 7 is held to drive the rebar bending rod 6 and the turntable 4 to rotate around the shaft 3, bending the rebar until it touches the stop bar 12. Finally, after bending, the handle 210 is rotated in the opposite direction, and the spring 204 drives the push rod 203 and the clamping plate 201 to retract, removing the rebar.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An easy-to-operate steel bar bending auxiliary device, comprising a support frame (1), characterized in that: The lower surface of the support frame (1) is connected to a base plate (2) by screws. A shaft (3) is fixedly connected to the center of the top surface of the base plate (2). A turntable (4) is rotatably connected to the outer surface of the shaft (3) via a bearing. A wheel (5) is fixedly connected to the center of the top surface of the turntable (4). A steel bar bending rod (6) is fixedly connected to the top surface of the turntable (4). A handle (7) is connected to the top end of the steel bar bending rod (6). An arc groove (8) is formed through the top surface of the support frame (1). An angle engraving line (9) is engraved on the top surface of the support frame (1) around the axial direction of the arc groove (8). A sliding rod (10) is slidably connected inside the arc groove (8). A pointer (11) is fixedly connected to the top of the bracket (1), a stop bar (12) is fixedly connected to the top surface of the pointer (11), a rotating plate (13) is inserted into the bottom of the sliding rod (10), a worm gear (14) is fixedly connected to the lower surface of the rotating plate (13), a worm (15) is driven by the worm gear (14), a transmission rod (16) is fixedly connected to both ends of the worm (15), a bevel gear box (17) is connected to one end of the transmission rod (16), a rotating rod (18) is rotatably connected inside the bevel gear box (17), a handwheel (19) is fixedly connected to one end of the rotating rod (18), and a steel bar positioning assembly (20) and a side plate (21) are provided on the lower surface of the support frame (1).

2. The easy-to-operate rebar bending auxiliary device according to claim 1, characterized in that: The top surface of the support frame (1) is welded with a steel bar positioning plate (22), and the bottom of the support frame (1) is welded with ear plates (23) at the four corners. The upper surface of the ear plates (23) is provided with mounting holes.

3. The easy-to-operate rebar bending auxiliary device according to claim 1, characterized in that: The top surface of the support frame (1) has a through hole, which is fitted with the turntable (4) with a clearance. The outer surface of the shaft (3) is threaded with a nut near the top.

4. The easy-to-operate rebar bending auxiliary device according to claim 1, characterized in that: The arc groove (8) is coaxial with the wheel (5), and two side plates (21) are fixedly connected to the lower surface of the support frame (1). A transmission rod (16) is rotatably connected between the two side plates (21).

5. The easy-to-operate rebar bending auxiliary device according to claim 1, characterized in that: The bevel gear box (17) is welded to the outer surface of one of the side plates (21), and the inside of the bevel gear box (17) is provided with two meshing bevel gears, one of which is connected to the transmission rod (16) at its center, and the other is connected to the rotating rod (18) at its center.

6. The easy-to-operate rebar bending auxiliary device according to claim 1, characterized in that: The rebar positioning assembly (20) includes a clamping plate (201), a moving block (202) is bolted to the bottom of the clamping plate (201), a push rod (203) is threaded to the outer surface of the moving block (202), a spring (204) is sleeved on the outer surface of the push rod (203), and a limit ring (205) is fixedly connected to the outer surface of the push rod (203). A ball head (206) is fixedly connected to one end of the push rod (203) relative to the moving block (202).

7. The easy-to-operate rebar bending auxiliary device according to claim 6, characterized in that: The rebar positioning assembly (20) also includes a side block (207) and a sliding sleeve (208). The side block (207) and the sliding sleeve (208) are welded to the lower surface of the support frame (1). The push rod (203) is inserted into the interior of the side block (207) and the sliding sleeve (208). The lower surface of the support frame (1) is rotatably connected to an eccentric wheel (209) via a shaft. A rotating handle (210) is fixedly connected to the outer circumferential surface of the eccentric wheel (209). A sliding groove (24) is provided through the upper surface of the support frame (1).

Images