Steel bar bending device for reinforcing concrete column

Abstract

The invention relates to the technical field of steel bar bending, and discloses a steel bar bending device for reinforcing a concrete column, which comprises a T-shaped base, a clamping mechanism, a bending mechanism and a storage mechanism, the bending mechanism comprises extending sleeves arranged at the two ends of the T-shaped base, the extending sleeves are slidably connected with extending rods, the ends of the extending rods are provided with extending tables, the sides, away from the T-shaped base, of the extending tables are rotationally connected with rotating shafts, the ends of the rotating shafts are provided with L-shaped deflection frames, and the ends of the L-shaped deflection frames are rotationally connected with rotating rollers. And a bending plate is arranged on the side, away from the ground, of the extending table, and the bending plate is rotationally connected with a guide roller matched with the rotating roller. According to the bending device, the L-shaped deflection frame transversely moving left and right makes contact with the deflection supporting plate and the deflection dragging rod correspondingly, after a steel bar is clamped once, the rotating rollers and the guide rollers can complete four-time bending treatment on the left side and the right side of the steel bar, and the bending efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel bar bending, and specifically to a steel bar bending device for concrete column reinforcement. Background Art

[0002] The reinforcement of concrete columns is to improve the bearing capacity, ductility, durability and other properties of concrete columns. A relatively common practice is that when pouring concrete columns, a steel bar with a zigzag structure is sleeved outside the pile body of the steel bar, so as to improve the structural strength of the entire column body through the horizontal and vertical steel bars.

[0003] Conventional steel bars are in a straight state. It usually requires four bends to bend the steel bar into a zigzag structure. The entire bending process is rather cumbersome. A large number of zigzag structures for external steel reinforcement treatment are consumed for one concrete column during the construction process. Therefore, it is necessary to improve the existing steel bar bending device to improve the processing efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a steel bar bending device for concrete column reinforcement to solve the technical problem of cumbersome bending process in the prior art.

[0005] A steel bar bending device for strengthening concrete columns, comprising a T-shaped base on which a steel bar to be bent is placed, and further comprising a clamping mechanism, a bending mechanism and a material storage mechanism; the clamping mechanism includes an L-shaped blocking frame arranged on the T-shaped base, and a trapezoidal sliding head matched with the L-shaped blocking frame is slidably connected to the middle of the T-shaped base; the bending mechanism includes extension sleeves arranged at both ends of the T-shaped base, an extension rod is slidably connected to the extension sleeve, an extension table is arranged at the end of the extension rod, a rotating shaft is rotatably connected to the side of the extension table away from the T-shaped base, an L-shaped deflection frame is arranged at the end of the rotating shaft, a rotating roller is rotatably connected to the end of the L-shaped deflection frame, a bending plate is arranged on the side of the extension table away from the ground, a guiding roller matched with the rotating roller is rotatably connected to the bending plate, a fixing plate is arranged on the side of the extension table close to the T-shaped base, a transmission sliding rod is slidably connected to the fixing plate, and a deflection drag rod matched with the L-shaped deflection frame is arranged at the end of the transmission sliding rod away from the T-shaped base. A double-acting cylinder for driving the two transmission sliding rods to move synchronously and reversely is arranged on the side of the T-shaped base. A fixing seat is arranged on the side of the extension sleeve, a guiding sliding rod is slidably connected to the fixing seat, a second limit baffle for limiting the maximum extension distance of the extension table is arranged at the end of the guiding sliding rod away from the T-shaped base, a first limit baffle slidably connected to the guiding sliding rod is arranged between the second limit baffle and the fixing seat, and a deflection support plate matched with the L-shaped deflection frame is arranged on the first limit baffle. The two first limit baffles move synchronously and reversely, and the two second limit baffles move synchronously and reversely. When the deflection support plate or the deflection drag rod contacts the L-shaped deflection frame, the rotating roller moves towards the direction away from the ground; the material storage mechanism includes a side plate arranged on the side of the T-shaped base, and a U-shaped bracket is fixedly connected to the end of the side plate.

[0006] As a preferred technical solution of the present invention, the included angle of the L-shaped deflection frame is less than 90 degrees. When the deflection drag rod contacts the L-shaped deflection frame, the side of the L-shaped deflection frame close to the rotating shaft rotates to a state parallel to the extension table. An arc-shaped protrusion matched with the deflection support plate is arranged on the side of the L-shaped deflection frame. When the deflection support plate fits with the arc-shaped protrusion, the side of the L-shaped deflection frame close to the rotating shaft rotates to a state parallel to the extension table. An angle limit deflection plate is arranged at the end of the rotating shaft away from the L-shaped deflection frame, and an angle limit baffle matched with the angle limit deflection plate is arranged on the side of the extension table. When the angle limit deflection plate and the angle limit baffle fit, the height of the rotating roller is lower than the height of the steel bar.

[0007] As a preferred technical solution of the present invention, the middle parts of the two fixed seats are both threadedly connected with first transverse translation lead screws. One end of each first transverse translation lead screw away from the T-shaped base is rotatably connected to the side surface of a first limit baffle. One end of each first transverse translation lead screw close to the T-shaped base is fixedly connected with a sliding rod. The two sliding rods fixedly connected with the first transverse translation lead screws are respectively slidably connected to both sides of a rotating sleeve. The middle parts of the two first limit baffles are both threadedly connected with second transverse translation lead screws. One end of each second transverse translation lead screw away from the T-shaped base is rotatably connected to the side surface of a second limit baffle. One end of each second transverse translation lead screw close to the T-shaped base is fixedly connected with a sliding rod. The two sliding rods fixedly connected with the second transverse translation lead screws are respectively slidably connected to both sides of the rotating sleeve.

[0008] As a preferred technical solution of the present invention, a first chute is provided in the middle of the T-shaped base. A sliding seat is slidably connected to the first chute. Trapezoidal sliding heads are fixedly connected to both sides of the sliding seat. One side of the trapezoidal sliding head close to the L-shaped blocking frame is an inclined surface.

[0009] As a preferred technical solution of the present invention, a plurality of protective rods penetrate through the middle of the U-shaped bracket. 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. Rotating wheels are fixedly connected to both sides of the main shaft. Feeding grooves for cooperating with steel bars are provided on the outer sides of the rotating wheels. The center of rotation of the arc-shaped discharge port coincides with the axis of the main shaft. A second chute is provided on the side surface of the trapezoidal sliding head. A slider is slidably connected to the second chute. A shifting rod for cooperating with the feeding groove is provided on the side surface of the slider. A top spring for cooperating with the slider is provided inside the second chute. The number of feeding grooves is five. The feeding grooves are evenly distributed relative to the outer side of the rotating wheel. A rotation limiting assembly for limiting the single rotation angle of the main shaft is provided on the outer side of the side plate. The rotation limiting assembly includes a limit fixing block provided on the outer side of the side plate. A limit sliding rod is slidably connected to the limit fixing block. A limit plate is provided at one end of the limit sliding rod away from the main shaft. A limit spring is provided between the limit plate and the fixed seat. A trapezoidal limit block is provided at one end of the limit sliding rod close to the main shaft. The plane of the trapezoidal limit block on the side away from the trapezoidal sliding head is arranged parallel to the axis of the limit sliding rod. A limit wheel is provided at the end of the main shaft. A trapezoidal limit groove for cooperating with the trapezoidal limit block is provided on the outer side of the limit wheel.

[0010] Adopting the above technical solution, the present invention has the following beneficial effects: By the L-shaped deflection frames moving left and right respectively contacting the deflection support plate and the deflection drag rod, after the steel bar is clamped once, the rotating roller and the guiding roller can complete four bending treatments on both the left and right sides of the steel bar, so that the steel bar can be bent into a square-shaped structure for the reinforcement of concrete columns, improving the bending efficiency, and the operator does not need to contact the steel bar during the whole bending process, improving the safety of the whole device. Description of the Drawings

[0011] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 It is a schematic structural diagram of a steel bar bending device for concrete column reinforcement.

[0013] Figure 2 It is a right view of a steel bar bending device for concrete column reinforcement.

[0014] Figure 3 It is a schematic structural diagram of the bending mechanism in a steel bar bending device for concrete column reinforcement.

[0015] Figure 4 It is Figure 3 front view of

[0016] Figure 5 It is a schematic structural diagram of the cooperation between the rotating roller and the guiding roller in a steel bar bending device for concrete column reinforcement.

[0017] Figure 6 It is a schematic structural diagram of the part below the extension sleeve in a steel bar bending device for concrete column reinforcement.

[0018] Figure 7 It is a schematic structural diagram of the first bending in a steel bar bending device for concrete column reinforcement.

[0019] Figure 8 It is a schematic structural diagram of the cooperation between the deflecting drag bar and the L-shaped deflecting frame in a steel bar bending device for concrete column reinforcement.

[0020] Figure 9 It is a schematic structural diagram of the second bending in a steel bar bending device for concrete column reinforcement.

[0021] Figure 10 It is a schematic structural diagram of the cooperation between the deflecting support plate and the L-shaped deflecting frame in a steel bar bending device for concrete column reinforcement.

[0022] Figure 11 It is a schematic structural diagram of the stockpiling mechanism in a steel bar bending device for concrete column reinforcement.

[0023] Figure 12 It is a schematic structural diagram of the U-shaped bracket in a steel bar bending device for concrete column reinforcement.

[0024] Figure 13Schematic structural diagram of a trapezoidal sliding head in a steel bar bending device for reinforcing concrete columns.

[0025] Figure 14 Schematic structural diagram of a rotation limiting component in a steel bar bending device for reinforcing concrete columns.

[0026] Figure 15 Schematic structural diagram of a steel bar bent into a square frame structure in a steel bar bending device for reinforcing concrete columns.

[0027] Reference signs.

[0028] In the figure: 1, T-shaped base; 2, steel bar; 3, clamping mechanism; 4, bending mechanism; 5, stock storage mechanism; 6, first chute; 7, sliding seat; 8, trapezoidal sliding head; 9, L-shaped blocking frame; 10, extension sleeve; 11, extension rod; 12, extension platform; 13, double-acting cylinder; 14, rotating shaft; 15, L-shaped deflecting frame; 16, rotating roller; 17, bending plate; 18, guiding roller; 19, second limiting baffle; 20, guiding slide bar; 21, second transverse translation screw rod; 22, first limiting baffle; 23, first transverse translation screw rod; 24, rotating sleeve; 25, sliding rod; 26, fixed seat; 27, deflecting support plate; 28, deflecting drag rod; 29, driving slide bar; 30, fixing plate; 31, buffer spring; 32, rotation limiting component; 33, angle limiting baffle; 34, angle limiting deflecting plate; 35, arc-shaped protrusion; 36, side plate; 37, U-shaped bracket; 38, protective rod; 39, side frame; 40, ejecting cylinder; 41, second chute; 42, ejecting spring; 43, slider; 44, lever; 45, arc-shaped discharge opening; 46, main shaft; 47, runner; 48, feeding chute; 49, limiting plate; 50, limiting spring; 51, limiting slide bar; 52, limiting fixing block; 53, trapezoidal limiting block; 54, limiting wheel; 55, trapezoidal limiting groove. Detailed implementation manners

[0029] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] In one embodiment, please refer to Figures 1 - 15 , a steel bar bending device for reinforcing concrete columns, including a T-shaped base 1, on which a steel bar 2 to be bent is placed. The front end of the T-shaped base 1 is a horizontally oriented cross plate, and the rear end of the T-shaped base 1 is a vertically oriented longitudinal plate. The steel bar 2 is horizontally placed on the T-shaped base 1 waiting for bending treatment, and further includes a clamping mechanism 3, a bending mechanism 4, and a stock storage mechanism 5; The clamping mechanism 3 includes L-shaped blocking frames 9 arranged 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 backward. Therefore, when the steel bars 2 facing left and right move forward, they will be stuck inside the L-shaped blocking frames 9. On the one hand, the fixing effect is achieved. On the other hand, the L-shaped blocking frames 9 are arranged on both sides, so that the steel bars 2 are fixed in a horizontal state. A trapezoidal sliding head 8 is arranged at the rear side of the T-shaped base 1. The trapezoidal sliding head 8 moves back and forth, and the upper part of the front side of the trapezoidal sliding head 8 is an inclined surface and the rear side is a vertical surface. Therefore, after the steel bar 2 falls above the trapezoidal sliding head 8, the steel bar 2 will slide forward along the inclined surface of the front side of the trapezoidal sliding head 8 and fall onto the T-shaped base 1. Subsequently, when the trapezoidal sliding head 8 moves forward again, the trapezoidal sliding head 8 pushes the steel bar 2 to move into the L-shaped blocking frame 9. The cooperation between the trapezoidal sliding head 8 and the L-shaped blocking frame 9 can realize the fixing process of the steel bar 2.

[0031] In a case of this embodiment, the bending mechanism 4 includes extension sleeves 10 arranged on the left and right sides of the T-shaped base 1. The extension sleeves 10 are slidably connected with extension rods 11. One end of the extension rod 11 away from the T-shaped base 1 is provided with a horizontal extension table 12. The extension sleeves 10 and the extension rods 11 are both arranged in the left-right direction, and the extension tables 12 on the left and right sides of the T-shaped base 1 are flush and at the same height. The upper surface of the extension table 12 is flush with the upper surface of the T-shaped base 1. On the side of the extension table 12 away from the T-shaped base 1, a rotating shaft 14 arranged in the front-back direction is rotatably connected. The front end of the rotating shaft 14 is fixedly connected with the end of an L-shaped deflection frame 15, and the corner of the L-shaped deflection frame 15 is downward. At the end of the L-shaped deflection frame 15 away from the T-shaped base 1, a rotating roller 16 arranged in the front-back direction is rotatably connected. A bending plate 17 is arranged on the upper surface of the extension table 12. The upper end of the bending plate 17 is rotatably connected with a guiding roller 18 arranged in the front-back direction. Only the front sides of the rotating roller 16 and the guiding roller 18 are fixed. Therefore, the steel bar 2 can move from the back to the front into the interiors of the rotating roller 16 and the guiding roller 18. The two L-shaped deflection frames 15 on both sides can drive the rotating roller 16 to move upward, and the steel bar 2 passes through the gap between the guiding roller 18 and the extension table 12 and extends out. When the rotating roller 16 moves upward, the rotating roller 16 will drive the extended part of the steel bar 2 to bend. The cooperation of the rotating roller 16 and the guiding roller 18 enables the steel bar 2 to be processed by a 90-degree bend. On the front side of the extension table 12 near the T-shaped base 1, a fixing plate 30 is arranged. The end of the fixing plate 30 is slidably connected with a transmission slide bar 29 arranged in the left-right direction. At the end of the transmission slide bar 29 away from the T-shaped base 1, a deflection drag bar 28 cooperating with the L-shaped deflection frame 15 is arranged. A buffer spring 31 is arranged between the deflection drag bar 28 and the fixing plate 30. In the middle of the front side of the T-shaped base 1, a double-acting cylinder 13 is arranged. The two piston rods of the double-acting cylinder 13 are respectively fixedly connected with the transmission slide bars 29 on the left and right sides. Thus, through the double-acting cylinder 13, the two guiding slide bars 20 on the left and right sides move synchronously away from each other or move synchronously closer to each other. And a fixing seat 26 is fixedly connected to the lower surface of the extension sleeve 10. The upper part of the fixing seat 26 is threadedly connected with a first transverse movement lead screw 23 arranged in the left-right direction. The end of the first transverse movement lead screw 23 away from the T-shaped base 1 is fixedly connected with a vertically arranged first limit baffle 22. The upper end of the first limit baffle 22 is fixedly connected with a deflection support plate 27 cooperating with the L-shaped deflection frame 15. And a second transverse movement lead screw 21 arranged in the left-right direction is threadedly connected to the lower part of the first limit baffle 22. The end of the second transverse movement lead screw 21 away from the T-shaped base 1 is provided with a second limit baffle 19. The upper end of the second limit baffle 19 is higher than the height of the extension table 12. Therefore, the maximum extension length of the extension table 12 can be limited by the second limit baffle 19. And two rotating sleeves 24 arranged in the left-right direction are arranged below the T-shaped base 1. Both the left and right sides of the rotating sleeve 24 are slidably connected with sliding rods 25.The two sliding rods 25 above are respectively fixedly connected to the two upper first transverse translation lead screws 23, and the two sliding rods 25 below are respectively fixedly connected to the two lower second transverse translation lead screws 21. Therefore, by rotating the upper rotating sleeve 24, the two first transverse translation lead screws 23 on the left and right sides can be rotated synchronously, so that the two first limit baffles 22 on the left and right sides move synchronously in opposite directions. Similarly, rotating the lower rotating sleeve 24 can make the two lower second transverse translation lead screws 21 rotate synchronously, so that the two lower second limit baffles 19 move synchronously in opposite directions. And to ensure the stability of the first limit baffle 22 and the second limit baffle 19, a guide slide rod 20 arranged in the left-right direction is slidably connected to the middle of the first limit baffle 22. One end of the guide slide rod 20 away from the T-shaped base 1 is fixedly connected to the second limit baffle 19, and a fixed seat 26 is slidably connected to the side of the guide slide rod 20 close to the T-shaped base 1. And to make the deflecting support plate 27 better drive the L-shaped deflecting frame 15 to rotate, an arc-shaped protrusion 35 matched with the deflecting support plate 27 is arranged on the side of the L-shaped deflecting frame 15. The arc-shaped protrusion 35 is far from the rotating shaft 14. Therefore, when the deflecting drag rod 28 contacts the L-shaped deflecting frame 15, before the deflecting drag rod 28 touches the arc-shaped protrusion 35, the surface of the deflecting drag rod 28 has already completed the fit with the side of the L-shaped deflecting frame 15. At this time, the L-shaped deflecting frame 15 has completed the rotation. However, when the deflecting support plate 27 contacts the L-shaped deflecting frame 15, when the arc-shaped protrusion 35 contacts the deflecting support plate 27, the L-shaped deflecting frame 15 will achieve the maximum rotation angle. And by setting the arc-shaped protrusion 35, the rotation angles of the L-shaped deflecting frame 15 when it contacts the deflecting drag rod 28 and the deflecting support plate 27 are the same, and the 90-degree bending treatment of the steel bar 2 can be completed.,

[0032] In a case of this embodiment, the stockpiling mechanism 5 includes side plates 36 arranged at the rear side of the T-shaped base 1. The side plates 36 are vertically arranged on both sides of the T-shaped base 1, and a U-shaped bracket 37 arranged in the front-rear direction is arranged at the upper end of the side plates 36. The U-shaped bracket 37 has an upward opening. Therefore, after the steel bars 2 are placed on the U-shaped bracket 37 in the left-right direction, both sides of the steel bars 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.

[0033] In a case of this embodiment, the included angle of the L-shaped deflection frame 15 is less than ninety degrees. When the deflection drag bar 28 contacts the L-shaped deflection frame 15, the side of the L-shaped deflection frame 15 close to the rotating shaft 14 rotates to a state parallel to the extension table 12. An arc-shaped protrusion 35 cooperating with the deflection support plate 27 is arranged on the side surface of the L-shaped deflection frame 15. When the deflection support plate 27 fits with the arc-shaped protrusion 35, the side of the L-shaped deflection frame 15 close to the rotating shaft 14 rotates to a state parallel to the extension table 12. After the L-shaped deflection frame 15 completes the rotation, the rotating roller 16 and the guiding roller 18 can complete the processing of bending the steel bar 2 by ninety degrees. And an angle limit deflection plate 34 is arranged at the rear end of the rotating shaft 14, and an angle limit baffle 33 cooperating with the angle limit deflection plate 34 is arranged at the rear side of the extension table 12. When the L-shaped deflection frame 15 rotates by the action of gravity, the angle limit deflection plate 34 will fall on the angle limit baffle 33, thereby achieving the effect of maximum angle limit. At this time, the rotating roller 16 is lower than the steel bar 2, so that the extension table 12 can freely move horizontally left and right, and the rotating roller 16 will not interfere with the steel bar 2.

[0034] In a case of this embodiment, a first chute 6 arranged in the front-rear direction is provided at the rear side of the T-shaped base 1. A sliding seat 7 is slidably connected to the middle of the first chute 6. Trapezoidal sliding heads 8 are fixedly connected to the left and right sides of the upper end of the sliding seat 7. And a jacking cylinder 40 is arranged at the rear end of the T-shaped base 1. The piston rod of the jacking cylinder 40 is fixedly connected to the trapezoidal sliding head 8. Therefore, the jacking cylinder 40 can push the trapezoidal sliding head 8 to move back and forth in the first chute 6.

[0035] In a case of this embodiment, a plurality of protection bars 38 facing left and right are provided on the U-shaped bracket 37. The left and right ends of the protection bars 38 are fixedly connected to the side frames 39. The lower ends of the side frames 39 are inclined towards the direction of the T-shaped base 1. After the steel bars 2 are placed on the U-shaped bracket 37, the left and right ends of the steel bars 2 will slide along the inclined surfaces of the side frames 39, thereby realizing the centering process of the steel bars 2. And an arc-shaped discharge port 45 is provided on the front side of the U-shaped bracket 37. The steel bars 2 can pass through the arc-shaped discharge port 45 from top to bottom to realize the discharging process. And a main shaft 46 facing left and right is rotatably connected to the upper end of the side plate 36. Rotating wheels 47 are provided on the left and right sides of the main shaft 46. Five feeding grooves 48 are evenly distributed on the outer sides of the rotating wheels 47. Looking from the right side, the rotating wheels 47 rotate counterclockwise. Therefore, when the rotating wheels 47 rotate, the steel bars 2 will fall into the feeding groove 48 at the uppermost part of the rotating wheels 47. And since the centers of the arc-shaped discharge port 45 and the rotating wheels 47 coincide, the steel bars 2 will rotate counterclockwise synchronously with the feeding grooves 48 of the rotating wheels 47, so that the steel bars 2 just discharge from the arc-shaped discharge port 45. And since the rotating wheels 47 themselves can block the arc-shaped discharge port 45, that is, only the steel bars 2 that enter the feeding grooves 48 of the rotating wheels 47 will fall, thereby realizing the effect that only one steel bar 2 discharges from the arc-shaped discharge port 45 each time.

[0036] In a case of this embodiment, a second chute 41 is vertically provided at the rear side of the trapezoidal sliding head 8. A slider 43 is slidably connected to the middle of the second chute 41. The slider 43 is fixedly connected to a dial rod 44 arranged facing left and right. And a ejecting spring 42 is provided at the lower part of the second chute 41. The ejecting spring 42 will push the dial rod 44 upward. Since five feeding grooves 48 are provided, when the dial rod 44 moves backward along with the trapezoidal sliding head 8, the dial rod 44 will first contact the feeding groove 48 at the lower front side of the rotating wheel 47. At this time, the dial rod 44 drives the rotating wheel 47 to rotate counterclockwise. The feeding groove 48 originally located at the lower front side rotates to the rear side, and the feeding groove 48 originally located at the upper front side will rotate to the lower front side. And the steel bar 2 originally stored in the feeding groove 48 will fall onto the trapezoidal sliding head 8, thereby realizing the feeding process. And in order to make only one steel bar 2 fall each time, a rotation limiting component 32 is provided on the side plate 36. The rotation limiting component 32 makes the angle of each rotation of the rotating wheel 47 just correspond to the central angle of two adjacent feeding grooves 48, so that after the trapezoidal sliding head 8 moves once, only one steel bar 2 falls onto the trapezoidal sliding head 8.

[0037] In a case of this embodiment, the rotation limiting assembly 32 includes a fixed seat 26 provided 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 provided at the lower end of the limiting slide rod 51. A limiting spring 50 is provided between the limiting plate 49 and the fixed seat 26. The limiting spring 50 will push the limiting slide rod 51 upward. A trapezoidal limiting block 53 is provided 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 is a vertical surface. A limiting wheel 54 is fixedly connected to the right end of the main shaft 46. A trapezoidal limiting groove 55 cooperating with the trapezoidal limiting block 53 is provided on the outer side of the limiting wheel 54. And the number and angle of the trapezoidal limiting grooves 55 and the feeding grooves 48 correspond one by one. Therefore, when the dial rod 44 moves backward, the runner 47 and the limiting wheel 54 rotate counterclockwise. At this time, the inclined surfaces of the trapezoidal limiting groove 55 and the trapezoidal limiting block 53 are in contact, and the trapezoidal limiting block 53 is pressed down. And 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. But when the dial rod 44 moves forward, at this time the dial rod 44 will make the runner 47 tend to rotate clockwise through the feeding groove 48. But at this time, the surface where the trapezoidal limiting groove 55 and the trapezoidal limiting block 53 are in contact is a vertical surface. At this time, the limiting wheel 54 is stuck by the trapezoidal limiting block 53. At this time, the dial rod 44 can only move downward to avoid the runner 47, so that the runner 47 can only intermittently rotate counterclockwise by a fixed angle, thus realizing the feeding process of the steel bar 2.

[0038] During the implementation of this embodiment, the straight steel bar 2 is placed horizontally on the upper part of the U-shaped bracket 37. Rotate the upper rotating sleeve 24, and the upper rotating sleeve 24 drives the first limiting baffles 22 on the left and right sides to move away from each other, thereby adjusting the spacing of the second bending. Rotate the lower rotating sleeve 24, and the lower rotating sleeve 24 drives the second limiting baffles 19 on the left and right sides to move away from each other, thereby adjusting the spacing of the first bending. At this time, the entire device completes the parameter setting.

[0039] Clamp the steel bar 2, start the ejecting cylinder 40. The ejecting cylinder 40 drives the trapezoidal sliding head 8 to move backward. During the backward movement of the trapezoidal sliding head 8, the dial rod 44 contacts the runner 47, and the runner 47 rotates counterclockwise. The steel bar 2 passes through the arc-shaped discharge port 45 along the feeding groove 48 on the runner 47. The steel bar 2 falls above the trapezoidal sliding head 8. The steel bar 2 moves forward along the inclined surface on the front side of the trapezoidal sliding head 8. At this time, reverse-start the ejecting cylinder 40. The ejecting 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 steel bar 2 to move forward. The steel bar 2 moves into 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 steel bar 2.

[0040] For the first bending, the double-acting cylinder 13 is activated. The piston rod of the double-acting cylinder 13 extends, and the piston rod drives the transmission slide rods 29 to move away from each other. The transmission slide rods 29 drive the extension tables 12 to move away from each other through the buffer springs 31. When the extension tables 12 contact the second limit baffle 19, the extension tables 12 stop lateral movement. At this time, the piston rod continues to push the transmission slide rods 29 outward, the buffer springs 31 are stretched, and the deflection drag rods 28 on the transmission slide rods 29 contact the L-shaped deflection frame 15. The L-shaped deflection frame 15 drives the rotating roller 16 to move upward. The cooperation between the rotating roller 16 and the guiding roller 18 bends the protruding part of the steel bar 2 by 90 degrees, realizing the processing of the first bending.

[0041] For the second bending, the double-acting cylinder 13 is activated in the reverse direction. The piston rod of the double-acting cylinder 13 contracts. Under the action of gravity, the L-shaped deflection frame 15 rotates to the initial state. At this time, the two extension tables 12 move closer to each other along with the transmission slide rods 29. When the L-shaped deflection frame 15 contacts the deflection support plate 27 at the upper end of the first limit plate 49, the L-shaped deflection frame 15 raises the rotating roller 16 again. The cooperation between the rotating roller 16 and the guiding roller 18 bends the middle part of the steel bar 2 by 90 degrees again. At this time, the steel bar 2 is bent into a square-shaped structure.

[0042] For the unloading process, the piston rod of the double-acting cylinder 13 is controlled to be in the middle position. At this time, the deflection support 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 square shape, and reversely activates the ejector cylinder 40 again. The trapezoidal sliding head 8 moves to the rear again for taking the steel bar 2. The entire bending device bends the subsequent steel bars 2 again.

[0043] The present invention is applicable to a steel bar bending device for reinforcing concrete columns. By the L-shaped deflection frame 15 that moves horizontally left and right contacting the deflection support plate 27 and the deflection drag rod 28 respectively, after the steel bar 2 is clamped once, the rotating roller 16 and the guiding roller 18 can complete four bending processes on both sides of the steel bar 2, enabling the steel bar 2 to be bent into a square-shaped structure for reinforcing concrete columns, improving the bending efficiency, and the operator does not need to contact the steel bar 2 during the entire bending process, improving the safety of the entire device.

[0044] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

Claims

1. A steel bar bending device for strengthening concrete columns, comprising a T-shaped base on which a steel bar to be bent is placed, characterized in that, It also includes a clamping mechanism, a bending mechanism and a stock storage mechanism; The clamping mechanism includes an L-shaped blocking frame arranged on the T-shaped base, and a trapezoidal sliding head cooperating with the L-shaped blocking frame is slidably connected to the middle of the T-shaped base; The bending mechanism includes extension sleeves arranged at both ends of the T-shaped base. An extension rod is slidably connected to the extension sleeve. An extension table is arranged at the end of the extension rod. A rotating shaft is rotatably connected to the side of the extension table away from the T-shaped base. An L-shaped deflection frame is arranged at the end of the rotating shaft. A rotating roller is rotatably connected to the end of the L-shaped deflection frame. A bending plate is arranged on the side of the extension table away from the ground. A guiding roller cooperating with the rotating roller is rotatably connected to the bending plate. A fixing plate is arranged on the side of the extension table close to the T-shaped base. A transmission sliding rod is slidably connected to the fixing plate. A deflection drag rod cooperating with the L-shaped deflection frame is arranged at the end of the transmission sliding rod away from the T-shaped base. A double-acting cylinder for driving the two transmission sliding rods to move synchronously and reversely is arranged on the side of the T-shaped base. A fixed seat is arranged on the side of the extension sleeve. A guiding sliding rod is slidably connected to the fixed seat. A second limit baffle for limiting the maximum extension distance of the extension table is arranged at the end of the guiding sliding rod away from the T-shaped base. A first limit baffle slidably connected to the guiding sliding rod is arranged between the second limit baffle and the fixed seat. A deflection supporting plate cooperating with the L-shaped deflection frame is arranged on the first limit baffle. The two first limit baffles move synchronously and reversely, and the two second limit baffles move synchronously and reversely. When the deflection supporting plate or the deflection drag rod contacts the L-shaped deflection frame, the rotating roller moves towards the direction away from the ground; The stock storage mechanism includes a side plate arranged on the side of the T-shaped base, and a U-shaped bracket is fixedly connected to the end of the side plate.

2. The steel bar bending device for reinforcing concrete columns according to claim 1, characterized in that, The included angle of the L-shaped deflection frame is less than ninety degrees. When the deflection drag rod contacts the L-shaped deflection frame, the side of the L-shaped deflection frame close to the rotating shaft rotates to a state parallel to the extension table. An arc-shaped protrusion cooperating with the deflection supporting plate is arranged on the side of the L-shaped deflection frame. When the deflection supporting plate fits with the arc-shaped protrusion, the side of the L-shaped deflection frame close to the rotating shaft rotates to a state parallel to the extension table.

3. The steel bar bending device for reinforcing concrete columns according to claim 2, wherein, An angle limit deflection plate is arranged at the end of the rotating shaft away from the L-shaped deflection frame. An angle limit baffle cooperating with the angle limit deflection plate is arranged on the side of the extension table. When the angle limit deflection plate and the angle limit baffle fit, the height of the rotating roller is lower than the height of the steel bar.

4. A steel bar bending device for reinforcing concrete columns according to claim 1, characterized in that, First transverse movement lead screws are threadedly connected to the middle of the two fixed seats. The end of the first transverse movement lead screw away from the T-shaped base is rotatably connected to the side of the first limit baffle. A sliding rod is fixedly connected to the end of the first transverse movement lead screw close to the T-shaped base. The two sliding rods fixedly connected to the first transverse movement lead screws are respectively slidably connected to both sides of the rotating sleeve.

5. A steel bar bending device for reinforcing concrete columns according to claim 4, characterized in that, Second transverse movement lead screws are threadedly connected to the middle of the two first limit baffles. The end of the second transverse movement lead screw away from the T-shaped base is rotatably connected to the side of the second limit baffle. A sliding rod is fixedly connected to the end of the second transverse movement lead screw close to the T-shaped base. The two sliding rods fixedly connected to the second transverse movement lead screws are respectively slidably connected to both sides of the rotating sleeve.

6. The steel bar bending device for reinforcing concrete columns according to claim 1, characterized in that, A first chute is provided in the middle of the T-shaped base. A sliding seat is slidably connected to the first chute. Trapezoidal sliding heads are fixedly connected to both sides of the sliding seat. The side of the trapezoidal sliding head close to the L-shaped blocking frame is an inclined surface.

7. A steel bar bending device for reinforcing concrete columns according to claim 1, characterized in that, A plurality of protective rods penetrate through the middle of the U-shaped bracket. 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.

8. A steel bar bending device for concrete column reinforcement according to claim 7, characterized in that, A main shaft is rotatably connected to the side plate. Rotating wheels are fixedly connected to both sides of the main shaft. Feeding grooves matched with steel bars are arranged on the outer sides of the rotating wheels. The center of rotation of the arc-shaped discharge port coincides with the axis of the main shaft.

9. A steel bar bending device for reinforcing concrete columns according to claim 8, characterized in that, A second chute is provided on the side surface of the trapezoidal sliding head. A slider is slidably connected to the second chute. A shifting rod matched with the feeding groove is arranged on the side surface of the slider. A ejecting spring matched with the slider is arranged inside the second chute. The number of the feeding grooves is five, and the feeding grooves are evenly distributed relative to the outer side of the rotating wheel. A rotation limiting assembly for limiting the single rotation angle of the main shaft is arranged on the outer side of the side plate.

10. A steel bar bending device for reinforcing concrete columns according to claim 9, characterized in that, The rotation limiting assembly includes a limiting fixed block arranged on the outer side of the side plate. A limiting sliding rod is slidably connected to the limiting fixed block. A limiting plate is arranged at the end of the limiting sliding rod away from the main shaft. A limiting spring is arranged between the limiting plate and the fixed seat. A trapezoidal limiting block is arranged at the end of the limiting sliding rod close to the main shaft. The plane of the trapezoidal limiting block on the side away from the trapezoidal sliding head is arranged parallel to the axis line of the limiting sliding rod. A limiting wheel is arranged at the end of the main shaft. A trapezoidal limiting groove matched with the trapezoidal limiting block is arranged on the outer side of the limiting wheel.

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