Reinforcing bar bending device for reinforcing concrete column

Abstract

The present application relates to the technical field of steel bending, and discloses a reinforcing steel bar bending device for reinforcing concrete columns, which comprises a T-shaped base, the T-shaped base being provided with reinforcing steel bars to be bent, a clamping mechanism, a bending mechanism and a storage mechanism; the bending mechanism comprises extension sleeves arranged at both ends of the T-shaped base, the extension sleeves being slidably connected with extension rods, the extension rods being provided at the ends with extension tables, the extension tables being provided at the sides away from the T-shaped base with rotary shafts, the rotary shafts being provided at the ends with L-shaped deflection frames, the L-shaped deflection frames being rotatably connected with rotary rollers, and the extension tables being provided at the sides away from the ground with bending plates, the bending plates being rotatably connected with guide rollers matched with the rotary rollers. The L-shaped deflection frames contact with the deflection supporting plates and the deflection drag rods respectively through left-right horizontal movement, so that the rotary rollers and the guide rollers can complete four times of bending treatment on the left and right sides of the reinforcing steel bars after the reinforcing steel bars are clamped once, and the bending efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of steel bar bending technology, specifically a steel bar bending device for reinforcing concrete columns. Background Technology

[0002] Strengthening concrete columns aims to improve their load-bearing capacity, ductility, and durability. A common practice is to insert a U-shaped reinforcing bar around the outside of the reinforced concrete pile during the pouring process, thereby increasing the overall structural strength of the column through the horizontal and vertical reinforcement.

[0003] Conventional steel bars are straight. Bending them into a U-shape requires four bends, making the process quite cumbersome. During construction, a single concrete column requires a large number of U-shaped structures for external steel reinforcement. Therefore, existing steel bar bending devices need to be improved to increase processing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a steel bar bending device for reinforcing concrete columns, so as to solve the technical problem of cumbersome bending process in the prior art.

[0005] A rebar bending device for reinforcing concrete columns includes a T-shaped base on which rebar to be bent is placed. It also includes a clamping mechanism, a bending mechanism, and a storage mechanism. The clamping mechanism includes an L-shaped blocking frame mounted on the T-shaped base, and a trapezoidal sliding head that mates with the L-shaped blocking frame is slidably connected to the middle of the T-shaped base. The bending mechanism includes protruding sleeves at both ends of the T-shaped base, with protruding rods slidably connected to the sleeves. Each protruding rod has a protruding platform at its end. A rotating shaft is rotatably connected to the side of the protruding platform away from the T-shaped base, and an L-shaped deflector is rotatably connected to the end of the rotating shaft. A rotating roller is rotatably connected to the end of the L-shaped deflector. A bending plate is located on the side of the protruding platform away from the ground, and a guide roller that mates with the rotating roller is rotatably connected to the bending plate. A fixing plate is located on the side of the protruding platform near the T-shaped base, and a transmission slide rod is slidably connected to the fixing plate. A deflection drag rod is provided at the end of the transmission slide rod away from the T-shaped base, which cooperates with the L-shaped deflection frame. A double-outlet cylinder is provided on the side of the T-shaped base to drive the two transmission slide rods to move synchronously in opposite directions. A fixed seat is provided on the side of the extension sleeve. A guide slide rod is slidably connected to the fixed seat. A second limiting baffle is provided at the end of the guide slide rod away from the T-shaped base to limit the maximum extension distance of the extension platform. A first limiting baffle is provided between the second limiting baffle and the fixed seat, which is slidably connected to the guide slide rod. A deflection support plate is provided on the first limiting baffle to cooperate with the L-shaped deflection frame. The two first limiting baffles move synchronously in opposite directions, and the two second limiting baffles move synchronously in opposite directions. When the deflection support plate or the deflection drag rod contacts the L-shaped deflection frame, the rotating roller moves in the direction away from the ground. The material storage mechanism includes a side plate provided on the side of the T-shaped base, and a U-shaped bracket is fixedly connected to the end of the side plate.

[0006] In a preferred embodiment of the present invention, the included angle of the L-shaped deflector frame is less than 90 degrees. When the deflecting drag rod contacts the L-shaped deflector frame, the side of the L-shaped deflector frame closest to the rotating shaft rotates to a state parallel to the extension platform. The side of the L-shaped deflector frame is provided with an arc-shaped protrusion that cooperates with the deflecting support plate. When the deflecting support plate is in contact with the arc-shaped protrusion, the side of the L-shaped deflector frame closest to the rotating shaft rotates to a state parallel to the extension platform. An angle-limiting deflector plate is provided at the end of the rotating shaft furthest from the L-shaped deflector frame, and an angle-limiting baffle is provided on the side of the extension platform that cooperates with the angle-limiting deflector plate. When the angle-limiting deflector plate and the angle-limiting baffle are in contact, the height of the rotating roller is lower than the height of the reinforcing bar.

[0007] In a preferred embodiment of the present invention, a first transverse sliding screw is threadedly connected to the middle of each of the two fixed seats. The end of the first transverse sliding screw away from the T-shaped base is rotatably connected to the side of a first limiting baffle. A sliding rod is fixedly connected to the end of the first transverse sliding screw near the T-shaped base. Two sliding rods fixedly connected to the first transverse sliding screw are slidably connected to both sides of the rotating sleeve. A second transverse sliding screw is threadedly connected to the middle of each of the two first limiting baffles. The end of the second transverse sliding screw away from the T-shaped base is rotatably connected to the side of a second limiting baffle. A sliding rod is fixedly connected to the end of the second transverse sliding screw near the T-shaped base. Two sliding rods fixedly connected to the second transverse sliding screw are slidably connected to both sides of the rotating sleeve.

[0008] As a preferred embodiment of the present invention, a first sliding groove is provided in the middle of the T-shaped base, a sliding seat is slidably connected to the first sliding groove, and trapezoidal sliding heads are fixedly connected to both sides of the sliding seat. The side of the trapezoidal sliding head near the L-shaped blocking frame is an inclined surface.

[0009] In a preferred embodiment of the present invention, a plurality of protective rods are connected through the middle of the U-shaped bracket, and side frames are fixedly connected to the ends of the protective rods. An arc-shaped discharge port is provided in the middle of the U-shaped bracket. A main shaft is rotatably connected to the side plate, and rotating wheels are fixedly connected to both sides of the main shaft. A feed groove that cooperates with a reinforcing bar is provided on the outer side of the rotating wheel. The rotation center of the arc-shaped discharge port coincides with the axis of the main shaft. A second slide groove is provided on the side of the trapezoidal sliding head, and a slider is slidably connected to the second slide groove. A lever that cooperates with the feed groove is provided on the side of the slider. An ejection spring that cooperates with the slider is provided inside the second slide groove. There are five feed grooves, which are evenly distributed relative to the outer side of the rotating wheel. A rotation limiting component that limits the single rotation angle of the main shaft is provided on the outer side of the side plate. The rotation limiting assembly includes a limiting fixing block disposed on the outer side of the side plate, a limiting slide rod slidably connected to the limiting fixing block, a limiting plate disposed at the end of the limiting slide rod away from the main shaft, a limiting spring disposed between the limiting plate and the fixing seat, a trapezoidal limiting block disposed at the end of the limiting slide rod near the main shaft, the plane of the trapezoidal limiting block away from the trapezoidal sliding head being parallel to the axis of the limiting slide rod, a limiting wheel disposed at the end of the main shaft, and a trapezoidal limiting groove disposed on the outer side of the limiting wheel to cooperate with the trapezoidal limiting block.

[0010] By adopting the above technical solution, the present invention has the following beneficial effects:

[0011] The L-shaped deflecting frame, which moves laterally left and right, contacts the deflecting support plate and the deflecting drag rod respectively. After the steel bar is clamped once, the rotating roller and the guide roller can complete four bending processes on the left and right sides of the steel bar. This allows the steel bar to be bent into a U-shaped structure for the reinforcement of concrete columns, improving bending efficiency. Furthermore, the entire bending process does not require the operator to contact the steel bar, thus improving the safety of the entire device. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of a steel bar bending device for reinforcing concrete columns.

[0014] Figure 2 This is a right view of a steel bar bending device for reinforcing concrete columns.

[0015] Figure 3 This is a schematic diagram of the bending mechanism in a steel bar bending device for reinforcing concrete columns.

[0016] Figure 4 for Figure 3 The front view.

[0017] Figure 5 This is a schematic diagram of the structure of a steel bar bending device for reinforcing concrete columns, showing the cooperation between a rotating roller and a guide roller.

[0018] Figure 6 This is a schematic diagram of the structure of a steel bar bending device for reinforcing concrete columns, specifically the part extending below the sleeve.

[0019] Figure 7 This is a schematic diagram of the first bending step in a steel bar bending device for reinforcing concrete columns.

[0020] Figure 8 This is a schematic diagram of the structure of a steel bar bending device for reinforcing concrete columns, showing the cooperation between a deflection drag bar and an L-shaped deflection frame.

[0021] Figure 9 This is a schematic diagram of the second bending in a steel bar bending device for reinforcing concrete columns.

[0022] Figure 10 This is a schematic diagram of the structure of a steel bar bending device for reinforcing concrete columns, showing the cooperation between a deflection support plate and an L-shaped deflection frame.

[0023] Figure 11 This is a schematic diagram of the material storage mechanism in a steel bar bending device for reinforcing concrete columns.

[0024] Figure 12 This is a schematic diagram of the U-shaped bracket in a steel bar bending device for reinforcing concrete columns.

[0025] Figure 13 This is a schematic diagram of the trapezoidal sliding head in a steel bar bending device for reinforcing concrete columns.

[0026] Figure 14 This is a schematic diagram of the rotating limiting component in a steel bar bending device for reinforcing concrete columns.

[0027] Figure 15 This is a schematic diagram of the steel bars bent into a U-shape in a steel bar bending device for reinforcing concrete columns.

[0028] Figure label.

[0029] In the diagram: 1. T-shaped base; 2. Reinforcing bar; 3. Clamping mechanism; 4. Bending mechanism; 5. Material storage mechanism; 6. First chute; 7. Sliding seat; 8. Trapezoidal sliding head; 9. L-shaped blocking frame; 10. Extending sleeve; 11. Extending rod; 12. Extending platform; 13. Double-outlet cylinder; 14. Rotating shaft; 15. L-shaped deflection frame; 16. Rotating roller; 17. Bending plate; 18. Guide roller; 19. Second limiting baffle; 20. Guide slide rod; 21. Second transverse lead screw; 22. First limiting baffle; 23. First transverse lead screw; 24. Rotating sleeve; 25. Sliding rod; 26. Fixed seat; 27. Deflection support plate; 28. Deflection 29. Drive rod; 30. Fixed plate; 31. Buffer spring; 32. Rotation limit assembly; 33. Angle limit baffle; 34. Angle limit deflection plate; 35. Arc-shaped protrusion; 36. Side plate; 37. U-shaped bracket; 38. Protective rod; 39. Side frame; 40. Ejection cylinder; 41. Second slide groove; 42. Ejection spring; 43. Slider; 44. Lever; 45. Arc-shaped discharge port; 46. Main shaft; 47. Rotary wheel; 48. Feed chute; 49. Limit plate; 50. Limit spring; 51. Limit slide rod; 52. Limit fixing block; 53. Trapezoidal limit block; 54. Limit wheel; 55. Trapezoidal limit groove. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In one embodiment, see Figures 1-15A steel bar bending device for reinforcing concrete columns includes a T-shaped base 1, on which steel bars 2 to be bent are placed. The front end of the T-shaped base 1 is a horizontal plate facing left and right, and the rear end of the T-shaped base 1 is a vertical plate facing front and back. The steel bars 2 are placed on the T-shaped base 1 facing left and right and are waiting to be bent. The device also includes a clamping mechanism 3, a bending mechanism 4, and a material storage mechanism 5.

[0032] The clamping mechanism 3 includes L-shaped blocking frames 9 on the left and right sides of the upper surface of the T-shaped base 1. The L-shaped blocking frames 9 are L-shaped structures and extend to the rear. Therefore, when the left and right facing steel bars 2 move forward, they will be stuck inside the L-shaped blocking frames 9, achieving a fixing effect on the one hand, and on the other hand, the L-shaped blocking frames 9 on both sides keep the steel bars 2 in a horizontal state for fixing. A trapezoidal sliding head 8 is set on the rear side of the T-shaped base 1. The trapezoidal sliding head 8 moves back and forth, and the upper front part of the trapezoidal sliding head 8 is a slope and the rear part is a vertical surface. Therefore, when the steel bar 2 falls on the trapezoidal sliding head 8, the steel bar 2 will slide forward along the slope of the front side of the trapezoidal sliding head 8 and fall onto the T-shaped base 1. Then, when the trapezoidal sliding head 8 moves forward again, the trapezoidal sliding head 8 pushes the steel bar 2 into the interior of the L-shaped blocking frames 9. The cooperation between the trapezoidal sliding head 8 and the L-shaped blocking frames 9 can achieve the fixing of the steel bar 2.

[0033] In one embodiment, the bending mechanism 4 includes protruding sleeves 10 disposed on the left and right sides of the T-shaped base 1. The protruding sleeves 10 are slidably connected to protruding rods 11. A horizontal protruding platform 12 is provided at the end of the protruding rod 11 away from the T-shaped base 1. Both the protruding sleeves 10 and the protruding rods 11 are oriented left-right, and the protruding platforms 12 on the left and right sides of the T-shaped base 1 are flush with each other. The upper surface of the protruding platform 12 is flush with the upper surface of the T-shaped base 1. A front-back oriented device is rotatably connected to the side of the protruding platform 12 away from the T-shaped base 1. A rotating shaft 14 is fixedly connected to the end of an L-shaped deflector 15, with the corner of the L-shaped deflector 15 pointing downwards. A rotating roller 16, oriented front-to-back, is rotatably connected to the end of the L-shaped deflector 15 away from the T-shaped base 1. A bending plate 17 is provided on the upper surface of the extension platform 12, and a guide roller 18, oriented front-to-back, is rotatably connected to the upper end of the bending plate 17. Both the rotating roller 16 and the guide roller 18 are fixed only at their front sides, allowing the reinforcing bar 2 to move from back to front onto the rotating roller 16 and the guide roller 18. Inside, the L-shaped deflecting frames 15 on both sides can drive the rotating roller 16 to move upward. The reinforcing bar 2 passes through the gap between the guide roller 18 and the extension platform 12 and extends out. When the rotating roller 16 moves upward, it will drive the extended part of the reinforcing bar 2 to bend. The cooperation between the rotating roller 16 and the guide roller 18 makes the reinforcing bar 2 bend at a 90-degree angle. A fixing plate 30 is provided on the front side of the extension platform 12 near the T-shaped base 1. The end of the fixing plate 30 is slidably connected to the left and right oriented transmission slide rod 29. The end of the transmission slide rod 29 away from the T-shaped base 1 is provided with a deflection drag rod 28 that cooperates with the L-shaped deflecting frame 15. A buffer spring 31 is provided between the deflection drag rod 28 and the fixing plate 30. A double-outlet cylinder 13 is provided in the middle of the front side of the T-shaped base 1. The two piston rods of the double-outlet cylinder 13 are fixedly connected to the left and right transmission slide rods 29 respectively, so that the two guide rollers on the left and right sides are bent by the double-outlet cylinder 13. The sliding rods 20 move synchronously apart or move synchronously closer to each other. A fixed seat 26 is fixedly connected to the lower surface of the extension sleeve 10. A first transverse sliding screw 23 oriented left and right is threadedly connected to the upper part of the fixed seat 26. A first vertically arranged first limiting baffle 22 is fixedly connected to the end of the first transverse sliding screw 23 away from the T-shaped base 1. A deflection support plate 27 that cooperates with the L-shaped deflection frame 15 is fixedly connected to the upper end of the first limiting baffle 22. A second transverse sliding screw 21 oriented left and right is threadedly connected to the lower part of the first limiting baffle 22. A second limiting baffle 19 is provided at the end of the second transverse sliding screw 21 away from the T-shaped base 1. The upper end of the second limiting baffle 19 is higher than the height of the extension platform 12. Therefore, the maximum extension length of the extension platform 12 can be limited by the second limiting baffle 19. Two left and right oriented rotating sleeves 24 are provided below the T-shaped base 1. Sliding rods 25 are slidably connected to the left and right sides of the rotating sleeves 24.The two upper sliding rods 25 are fixedly connected to the two upper first transverse sliding screws 23, and the two lower sliding rods 25 are fixedly connected to the two lower second transverse sliding screws 21. Therefore, by rotating the upper rotating sleeve 24, the first transverse sliding screws 23 on both sides can be rotated synchronously, thereby causing the first limiting baffles 22 on both sides to move synchronously in opposite directions. Similarly, rotating the lower rotating sleeve 24 can cause the two lower second transverse sliding screws 21 to rotate synchronously, thereby causing the two lower second limiting baffles 19 to move synchronously in opposite directions. In order to ensure the stability of the first limiting baffles 22 and the second limiting baffles 19, a guide rod 20 oriented left and right is slidably connected to the middle of the first limiting baffle 22. The end of the guide rod 20 away from the T-shaped base 1 is fixedly connected to the second limiting baffle 19, and the side of the guide rod 20 closer to the T-shaped base 1 is slidably connected to the second limiting baffle 19. A fixed seat 26 is provided. To better facilitate the rotation of the L-shaped deflector frame 15 by the deflector plate 27, an arc-shaped protrusion 35 is provided on the side of the L-shaped deflector frame 15 to cooperate with the deflector plate 27. The arc-shaped protrusion 35 is far from the rotation axis 14. Therefore, when the deflector rod 28 contacts the L-shaped deflector frame 15, its surface is already in contact with the side of the L-shaped deflector frame 15 before it touches the arc-shaped protrusion 35, at which point the L-shaped deflector frame 15 has already rotated. However, the maximum rotation angle of the L-shaped deflector frame 15 is achieved only when the deflector plate 27 contacts the L-shaped deflector frame 15 and the arc-shaped protrusion 35 contacts the deflector plate 27. Furthermore, by providing the arc-shaped protrusion 35, the rotation angle of the L-shaped deflector frame 15 when in contact with both the deflector rod 28 and the deflector plate 27 is the same, allowing for the completion of the 90-degree bend of the reinforcing bar 2.

[0034] In one embodiment, the storage mechanism 5 includes a side plate 36 disposed on the rear side of the T-shaped base 1. The side plate 36 is vertically disposed on both sides of the T-shaped base 1. A U-shaped bracket 37 is disposed on the upper end of the side plate 36, with the U-shaped bracket 37 opening upward. Therefore, after the steel bar 2 is placed on the U-shaped bracket 37 with the left and right sides facing each other, the two sides of the steel bar 2 will be supported by the U-shaped bracket 37, so that multiple steel bars 2 can be stored on the upper part of the U-shaped bracket 37 at the same time.

[0035] In one embodiment, the included angle of the L-shaped deflector 15 is less than 90 degrees. When the deflecting drag bar 28 contacts the L-shaped deflector 15, the side of the L-shaped deflector 15 closest to the rotation axis 14 rotates to a state parallel to the extension platform 12. The side of the L-shaped deflector 15 is provided with an arc-shaped protrusion 35 that cooperates with the deflecting support plate 27. When the deflecting support plate 27 is in contact with the arc-shaped protrusion 35, the side of the L-shaped deflector 15 closest to the rotation axis 14 rotates to a state parallel to the extension platform 12. After the L-shaped deflector 15 completes its rotation, the rotating roller 16 and the guide roller 18 can complete the 90-degree bending of the reinforcing bar 2. Furthermore, an angle limiting deflection plate 34 is set at the rear end of the rotating shaft 14, and an angle limiting baffle 33 is set on the rear side of the extension platform 12 in conjunction with the angle limiting deflection plate 34. When the L-shaped deflection frame 15 rotates under the action of gravity, the angle limiting deflection plate 34 will fall on the angle limiting baffle 33, thereby achieving the effect of maximum angle limitation. At this time, the rotating roller 16 is lower than the steel bar 2, so that the extension platform 12 can move freely left and right, and the rotating roller 16 will not interfere with the steel bar 2.

[0036] In one embodiment, a first sliding groove 6 oriented front to back is provided on the rear side of the T-shaped base 1. A sliding seat 7 is slidably connected to the middle of the first sliding groove 6. Trapezoidal sliding heads 8 are fixedly connected to the left and right sides of the upper end of the sliding seat 7. An ejection cylinder 40 is provided at the rear end of the T-shaped base 1. The piston rod of the ejection cylinder 40 is fixedly connected to the trapezoidal sliding head 8. Therefore, the ejection cylinder 40 can push the trapezoidal sliding head 8 to move back and forth in the first sliding groove 6.

[0037] In one embodiment, multiple left-right oriented protective rods 38 are provided on the U-shaped bracket 37. The left and right ends of the protective rods 38 are fixedly connected to side frames 39. The lower end of the side frames 39 is inclined towards the T-shaped base 1. When the reinforcing bar 2 is placed on the U-shaped bracket 37, the left and right ends of the reinforcing bar 2 will slide along the inclined surface of the side frame 39, thereby achieving the centering of the reinforcing bar 2. Furthermore, an arc-shaped discharge port 45 is provided on the front side of the U-shaped bracket 37, and the reinforcing bar 2 can pass through the arc-shaped discharge port 45 from top to bottom for unloading. Furthermore, a left-right oriented main shaft 46 is rotatably connected to the upper end of the side plate 36. Rotating wheels 47 are arranged on the left and right sides of the main shaft 46. Five feeding slots 48 are evenly distributed on the outer side of the rotating wheels 47. When viewed from the right, the rotating wheels 47 rotate counterclockwise. Therefore, when the rotating wheels 47 rotate, the steel bar 2 will fall into the uppermost feeding slot 48 of the rotating wheels 47. Since the center of the arc-shaped discharge port 45 coincides with the center of the rotating wheels 47, the steel bar 2 will rotate counterclockwise synchronously with the feeding slots 48 of the rotating wheels 47, so that the steel bar 2 is discharged from the arc-shaped discharge port 45. Since the rotating wheels 47 themselves can block the arc-shaped discharge port 45, that is, only the steel bar 2 that has entered the feeding slots 48 of the rotating wheels 47 will fall out, thus achieving the effect that only one steel bar 2 is discharged from the arc-shaped discharge port 45 at a time.

[0038] In one embodiment, a second slide groove 41 is vertically arranged on the rear side of the trapezoidal sliding head 8. A slider 43 is slidably connected to the middle of the second slide groove 41. The slider 43 is fixedly connected to a lever 44 arranged in the left and right directions. An ejector spring 42 is arranged at the lower part of the second slide groove 41. The ejector spring 42 pushes the lever 44 upward. Since there are five feed slots 48, when the lever 44 moves backward with the trapezoidal sliding head 8, the lever 44 will first contact the feed slot 48 below the front side of the rotating wheel 47. At this time, the lever 44 drives the rotating wheel 47 to rotate counterclockwise. The feed slot 48 that was originally located below the front side rotates to the rear side, while the feed slot 48 that was originally located above the front side rotates to the lower front side. The steel bar 2 that was originally stored in the feed slot 48 will fall onto the trapezoidal sliding head 8, thereby realizing the feeding process. Furthermore, in order to ensure that only one rebar 2 falls off each time, a rotation limiting component 32 is set on the side plate 36. The rotation limiting component 32 ensures that the angle of rotation of the wheel 47 each time corresponds exactly to the central angle of the two adjacent feed troughs 48, so that after the trapezoidal sliding head 8 moves once, only one rebar 2 falls onto the trapezoidal sliding head 8.

[0039] In one embodiment, the rotation limiting assembly 32 includes a fixed seat 26 disposed in the middle of the side plate 36. A vertically arranged limiting slide rod 51 is slidably connected to the middle of the fixed seat 26. A limiting plate 49 is disposed at the lower end of the limiting slide rod 51. A limiting spring 50 is disposed between the limiting plate 49 and the fixed seat 26. The limiting spring 50 pushes the limiting slide rod 51 upward. A trapezoidal limiting block 53 is disposed at the upper end of the limiting slide rod 51. The front side of the trapezoidal limiting block 53 is an inclined surface, and the rear side of the trapezoidal limiting block 53 is a vertical surface. A limiting wheel 54 is fixedly connected to the right end of the main shaft 46 for limiting. The outer side of the wheel 54 is provided with a trapezoidal limiting groove 55 that cooperates with the trapezoidal limiting block 53. The number and angle of the trapezoidal limiting groove 55 correspond one-to-one with the feed groove 48. Therefore, when the lever 44 moves backward, the rotating wheel 47 and the limiting wheel 54 rotate counterclockwise. At this time, the inclined surface of the trapezoidal limiting groove 55 contacts the inclined surface of the trapezoidal limiting block 53, and the trapezoidal limiting block 53 is pressed down. When the subsequent trapezoidal limiting groove 55 moves above the trapezoidal limiting block 53, the trapezoidal limiting block 53 will move upward under the action of the limiting spring 50, so that the trapezoidal limiting block 53 is inserted into the trapezoidal limiting groove 55 again. However, when the lever 44 moves forward, it causes the rotating wheel 47 to rotate clockwise through the feed groove 48. At this time, the contact surface between the trapezoidal limiting groove 55 and the trapezoidal limiting block 53 is vertical. The limiting wheel 54 is blocked by the trapezoidal limiting block 53. The lever 44 can only move downward to avoid the rotating wheel 47, so that the rotating wheel 47 can only rotate counterclockwise at a fixed angle intermittently, thus realizing the feeding process of the steel bar 2.

[0040] In this embodiment, the straight steel bar 2 is placed on the upper part of the U-shaped bracket 37 with the left and right sides facing each other. The upper rotating sleeve 24 is rotated, which causes the first limiting baffles 22 on the left and right sides to move away from each other, thereby adjusting the spacing of the second bend. The lower rotating sleeve 24 is rotated, which causes the second limiting baffles 19 on the left and right sides to move away from each other, thereby adjusting the spacing of the first bend. At this time, the parameter setting of the entire device is completed.

[0041] When the reinforcing bar 2 is clamped, the ejector cylinder 40 is activated. The ejector cylinder 40 drives the trapezoidal sliding head 8 to move backward. During the backward movement of the trapezoidal sliding head 8, the lever 44 contacts the rotating wheel 47. The rotating wheel 47 rotates counterclockwise. The reinforcing bar 2 passes through the arc-shaped discharge port 45 along the feed groove 48 on the rotating wheel 47 and falls above the trapezoidal sliding head 8. The reinforcing bar 2 moves forward along the inclined surface on the front side of the trapezoidal sliding head 8. At this time, the ejector cylinder 40 is activated in the opposite direction. The ejector cylinder 40 drives the trapezoidal sliding head 8 to move forward. The vertical surface on the front side of the trapezoidal sliding head 8 drives the reinforcing bar 2 to move forward. The reinforcing bar 2 moves into the interior of the L-shaped blocking frame 9. At this time, the L-shaped blocking frame 9 and the trapezoidal sliding head 8 complete the clamping process of the reinforcing bar 2.

[0042] In the first bend, the double-outlet cylinder 13 is activated, and the piston rod of the double-outlet cylinder 13 extends. The piston rod drives the transmission slide rod 29 to move away from each other. The transmission slide rod 29 drives the extension platform 12 to move away from each other through the buffer spring 31. When the extension platform 12 contacts the second limit baffle 19, the extension platform 12 stops moving laterally. At this time, the piston rod continues to push the transmission slide rod 29 outward, and the buffer spring 31 is stretched. The deflection drag rod 28 on the transmission slide rod 29 contacts the L-shaped deflection frame 15. The L-shaped deflection frame 15 drives the rotating roller 16 to move upward. The cooperation of the rotating roller 16 and the guide roller 18 causes the extended part of the steel bar 2 to be bent at ninety degrees, thus realizing the first bend.

[0043] In the second bend, the double-outlet cylinder 13 is activated in the reverse direction. The piston rod of the double-outlet cylinder 13 retracts, and under the action of gravity, the L-shaped deflector 15 rotates to its initial state. At this time, the two protruding platforms 12 move closer to each other with the transmission slide rod 29. When the L-shaped deflector 15 contacts the deflection support plate 27 at the upper end of the first limit plate 49, the L-shaped deflector 15 lifts the rotating roller 16 again. The rotating roller 16 cooperates with the guide roller 18 to bend the middle part of the steel bar 2 by ninety degrees again. At this time, the steel bar 2 is bent into a U-shaped structure.

[0044] During the unloading process, the piston rod of the double-outlet cylinder 13 is controlled to be in the middle position. At this time, the deflection plate 27 is disengaged from the L-shaped deflection frame 15. The L-shaped deflection frame 15 rotates to the initial state under the action of gravity. The operator removes the steel bar 2 that has been bent into a U-shape and starts the ejection cylinder 40 in the opposite direction again. The trapezoidal sliding head 8 moves to the rear side again to pick up the steel bar 2. The entire bending device bends the subsequent steel bars 2 again.

[0045] This invention relates to a steel bar bending device for reinforcing concrete columns. The L-shaped deflecting frame 15, which moves laterally left and right, contacts the deflecting support plate 27 and the deflecting drag rod 28 respectively. After the steel bar 2 is clamped once, the rotating roller 16 and the guide roller 18 can complete four bending processes on both sides of the steel bar 2, allowing it to be bent into a U-shaped structure for reinforcing concrete columns. This improves bending efficiency, and the entire bending process does not require operator contact with the steel bar 2, thus enhancing the safety of the entire device.

[0046] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Claims

1. A steel bar bending device for reinforcing concrete columns, comprising a T-shaped base, on which steel bars to be bent are placed, characterized in that... It also includes a clamping mechanism, a bending mechanism, and a material storage mechanism; The clamping mechanism includes an L-shaped blocking frame disposed on a T-shaped base, and a trapezoidal sliding head that cooperates with the L-shaped blocking frame is slidably connected to the middle of the T-shaped base; A bending mechanism includes protruding sleeves at both ends of a T-shaped base. Each protruding sleeve is slidably connected to a protruding rod, the end of which is provided with a protruding platform. A rotating shaft is rotatably connected to the side of the protruding platform away from the T-shaped base. An L-shaped deflector is located at the end of the rotating shaft, and a rotating roller is rotatably connected to the end of the L-shaped deflector. A bending plate is located on the side of the protruding platform away from the ground, and a guide roller cooperating with the rotating roller is rotatably connected to the bending plate. A fixing plate is located on the side of the protruding platform near the T-shaped base, and a transmission slide rod is slidably connected to the fixing plate. A deflection drag rod cooperating with the L-shaped deflector is located at the end of the transmission slide rod away from the T-shaped base. The T-shaped base... A double-outlet cylinder is provided on the side to drive two transmission slide rods to move synchronously in opposite directions. A fixed seat is provided on the side of the extension sleeve. A guide slide rod is slidably connected to the fixed seat. A second limiting baffle is provided at the end of the guide slide rod away from the T-shaped base to limit the maximum extension distance of the extension platform. A first limiting baffle is provided between the second limiting baffle and the fixed seat and is slidably connected to the guide slide rod. A deflection support plate is provided on the first limiting baffle to cooperate with the L-shaped deflection frame. The two first limiting baffles move synchronously in opposite directions, and the two second limiting baffles move synchronously in opposite directions. When the deflection support plate or deflection rod contacts the L-shaped deflection frame, the rotating roller moves in the direction away from the ground. The material storage mechanism includes a side plate disposed on the side of the T-shaped base, and a U-shaped bracket is fixedly connected to the end of the side plate; The included angle of the L-shaped deflecting frame is less than 90 degrees. When the deflecting drag bar contacts the L-shaped deflecting frame, the side of the L-shaped deflecting frame near the rotating shaft rotates to a state parallel to the extension platform. The side of the L-shaped deflecting frame is provided with an arc-shaped protrusion that cooperates with the deflecting support plate. When the deflecting support plate is in contact with the arc-shaped protrusion, the side of the L-shaped deflecting frame near the rotating shaft rotates to a state parallel to the extension platform. The end of the rotating shaft away from the L-shaped deflecting frame is provided with an angle limiting deflecting plate. The side of the extension platform is provided with an angle limiting baffle that cooperates with the angle limiting deflecting plate. When the angle limiting deflecting plate and the angle limiting baffle are in contact, the height of the rotating roller is lower than the height of the reinforcing bar.

2. The steel bar bending device for reinforcing concrete columns according to claim 1, characterized in that, Both fixed seats are threadedly connected to a first transverse sliding screw in the middle. The end of the first transverse sliding screw away from the T-shaped base is rotatably connected to the side of the first limiting baffle. The end of the first transverse sliding screw near the T-shaped base is fixedly connected to a sliding rod. The two sliding rods fixedly connected to the first transverse sliding screw are respectively slidably connected to both sides of the rotating sleeve.

3. The steel bar bending device for reinforcing concrete columns according to claim 2, characterized in that, The middle of each of the two first limiting baffles is threaded with a second transverse sliding screw. The end of the second transverse sliding screw away from the T-shaped base is rotatably connected to the side of the second limiting baffle. The end of the second transverse sliding screw near the T-shaped base is fixedly connected to a sliding rod. The two sliding rods fixedly connected to the second transverse sliding screw are respectively slidably connected to both sides of the rotating sleeve.

4. The steel bar bending device for reinforcing concrete columns according to claim 1, characterized in that, The T-shaped base has a first sliding groove in the middle, and a sliding seat is slidably connected to the first sliding groove. Trapezoidal sliding heads are fixedly connected to both sides of the sliding seat, and the side of the trapezoidal sliding head closest to the L-shaped blocking frame is inclined.

5. A steel bar bending device for reinforcing concrete columns according to claim 1, characterized in that, The U-shaped bracket has multiple protective rods running through its middle section, and the ends of the protective rods are fixedly connected to side frames. The U-shaped bracket also has an arc-shaped discharge port in its middle section.

6. A steel bar bending device for reinforcing concrete columns according to claim 5, characterized in that, A main shaft is rotatably connected to the side plate, and rotating wheels are fixedly connected to both sides of the main shaft. A feed groove that cooperates with the steel bars is provided on the outer side of the rotating wheels, and the rotation center of the arc-shaped discharge port coincides with the axis of the main shaft.

7. A steel bar bending device for reinforcing concrete columns according to claim 6, characterized in that, The trapezoidal sliding head has a second sliding groove on its side, and a slider is slidably connected to the second sliding groove. A lever that cooperates with the feed groove is provided on the side of the slider. An ejector spring that cooperates with the slider is provided inside the second sliding groove. There are five feed grooves, which are evenly distributed relative to the outer side of the rotary wheel. A rotation limit component that limits the single rotation angle of the main shaft is provided on the outer side of the side plate.

8. A steel bar bending device for reinforcing concrete columns according to claim 7, characterized in that, The rotation limiting assembly includes a limiting fixing block disposed on the outer side of the side plate, a limiting slide rod slidably connected to the limiting fixing block, a limiting plate disposed at the end of the limiting slide rod away from the main shaft, a limiting spring disposed between the limiting plate and the fixing seat, a trapezoidal limiting block disposed at the end of the limiting slide rod near the main shaft, the plane of the trapezoidal limiting block away from the trapezoidal sliding head being parallel to the axis of the limiting slide rod, a limiting wheel disposed at the end of the main shaft, and a trapezoidal limiting groove disposed on the outer side of the limiting wheel to cooperate with the trapezoidal limiting block.

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