阅读说明：本技术 一种建筑钢筋折弯装置 (Construction steel bar bending device ) 是由 李红君 于 2020-12-11 设计创作，主要内容包括：本发明属于钢筋折弯领域,尤其是一种建筑钢筋折弯装置,针对现有建筑钢筋需要工作人员手动进行折弯操作,加大了操作的难度,降低了工作效率,且折弯设备的通用性较差,不便于不同尺寸的钢筋进行折弯的问题,现提出如下方案,其包括操作台,所述操作台的顶部安装有折弯轮,折弯轮的顶部开设有安装孔,操作台的顶部固定安装有安装柱,安装柱安装在安装孔内,安装孔的内壁上开设有两个限位槽,安装柱上开设有两个控制槽。本发明结构合理,操作方便,该建筑钢筋折弯装置可进行自动折弯操作,降低了操作的难度,提升了工作效率,且折弯设备的结构灵活,便于不同尺寸的钢筋进行折弯,也可以对折弯轮进行更换。(The invention belongs to the field of steel bar bending, and particularly relates to a building steel bar bending device which aims at solving the problems that the existing building steel bars need manual bending operation of workers, the operation difficulty is increased, the work efficiency is reduced, the universality of bending equipment is poor, and the bending of the steel bars with different sizes is inconvenient. The bending device for the construction steel bars is reasonable in structure and convenient to operate, can be used for automatically bending, reduces the difficulty of operation, improves the working efficiency, is flexible in structure, facilitates the bending of steel bars with different sizes, and can replace the bending wheels.)

1. A construction steel bar bending device comprises an operation table (1) and is characterized in that a bending wheel (2) is installed at the top of the operation table (1), a mounting hole (3) is formed in the top of the bending wheel (2), a mounting column (4) is fixedly installed at the top of the operation table (1), the mounting column (4) is installed in the mounting hole (3), two limiting grooves (5) are formed in the inner wall of the mounting hole (3), two control grooves are formed in the mounting column (4), limiting blocks (6) are slidably installed in the two control grooves, the limiting blocks (6) are installed in the corresponding limiting grooves (5), a fixing seat (7) is fixedly installed at the top of the operation table (1), a fixing groove (8) is formed in the bottom of the fixing seat (7), the inner walls on two sides of the fixing groove (8) are both open, spring grooves are formed in the inner walls on two sides of the fixing groove (8), the movable rods (9) are arranged in the two spring grooves in a sliding mode, the clamping plates (10) are fixedly arranged at the ends, close to each other, of the two movable rods (9), the two clamping plates (10) are matched, the springs (11) are fixedly arranged at the ends, far away from each other, of the two movable rods (9), one ends of the springs (11) are fixedly connected to the inner walls of the corresponding spring grooves, the fixed base (7) is provided with a fixed cavity (29), the inner wall of the bottom of the fixed cavity (29) is provided with two movable holes (30), the two movable holes (30) are internally provided with movable arms (25) in a sliding mode, one ends of the movable arms (25) are fixedly connected to the corresponding movable rods (9), one sides, close to each other, of the two movable arms (25) are fixedly provided with racks (26), the two racks (26) are arranged in the fixed cavity (29) in a sliding mode, and the inner wall of the, a control rod is rotatably installed in the fixed hole, a gear (28) is fixedly installed at the bottom end of the control rod, two racks (26) are meshed with the gear (28), a control wheel (27) is fixedly installed at the top end of the control rod, a groove (18) is formed in the top of the operating platform (1), a guide collar seat is slidably installed in the groove (18), an adjusting column (12) is fixedly installed at the top of the guide collar seat, a moving groove (13) is formed in one end of the adjusting column (12), a bending column (14) is slidably installed in the moving groove (13), a bending roller (20) is rotatably installed at one end of the bending column (14), a first thread groove is formed in the other end of the bending column (14), a motor (16) is fixedly installed at the other end of the adjusting column (12), a first lead screw (15) is fixedly connected to an output shaft of the motor (16), and the first lead screw (15), one side of the guide ring seat is provided with a threaded hole, the inner wall of one side of the groove (18) is provided with a through hole, a second screw rod (17) is rotatably arranged in the through hole, the second screw rod (17) is arranged in the threaded hole in a threaded mode, and one end of the second screw rod (17) is fixedly provided with a rotating wheel (19).

2. The construction steel bar bending device according to claim 1, wherein the inner wall of the moving groove (13) is provided with a sliding groove, the bending column (14) is fixedly provided with a sliding block, and the sliding block is slidably arranged in the sliding groove.

3. The construction steel bar bending device according to claim 1, wherein one end of each of the two limiting blocks (6) close to each other is provided with a second thread groove, the inner wall of one side of each of the two control grooves close to each other is provided with a connecting hole, the connecting holes are internally and fixedly provided with two connecting blocks (22), the two connecting blocks (22) are rotatably provided with a screw rod (21), and the screw rods (21) are in threaded connection with the corresponding second thread grooves.

4. The construction steel bar bending device according to claim 3, wherein one ends of the two screw rods (21) close to each other are fixedly provided with first bevel gears (23), the inner wall of the bottom of the connecting hole is provided with a rotating hole, the rotating hole is internally and rotatably provided with a connecting rod, one end of the connecting rod is fixedly provided with an adjusting wheel, the adjusting wheel is rotatably arranged at the bottom of the operating platform (1), the other end of the connecting rod is fixedly provided with a second bevel gear (24), and the second bevel gear (24) is meshed with the two first bevel gears (23).

5. The construction steel bar bending device according to claim 1, wherein sliding grooves are formed on the inner walls of the two sides of the fixing cavity (29), sliding blocks are fixedly mounted on one sides of the two racks (26), and the sliding blocks are slidably mounted in the corresponding sliding grooves.

6. The construction steel bar bending device according to claim 1, wherein an auxiliary groove is formed in the inner wall of the control groove, a fixed block is fixedly mounted on the limiting block (6), and the fixed block is slidably connected with the inner wall of the auxiliary groove.

7. The construction steel bar bending device according to claim 1, wherein one end of the bending column (14) is provided with a turning groove, and the bending roller (20) is rotatably installed in the turning groove.

8. The construction steel bar bending device according to claim 3, wherein a control hole is formed at one side of the connecting block (22), and the screw rod (21) is rotatably installed in the control hole.

Technical Field

The invention relates to the technical field of steel bar bending, in particular to a building steel bar bending device.

Background

When the building construction, generally adopt reinforced concrete to consolidate building strength and stability, but the reinforcing bar is more regular when going out of the field, need process the application that just can compound reality after the deformation, generally all adopt the cutting at the welding, the construction reinforcing bar often need bend the operation and come the cooperation construction, just so need the bending device to bend the processing to the reinforcing bar, the construction reinforcing bar is a material commonly used in the building, the reinforcing bar divide into according to the steel grade: non-alloy steel bars, low-alloy steel bars, alloy steel bars;

among the current reinforcing bar bending mechanism, the service position of the roller of buckling can not be adjusted, the gag lever post is generally undetachable and change, though current patent CN210358978U discloses a steel bar bender with adjustable angle of buckling for building, can change the gag lever post, but this technique adopts the spring control slide bar and then fixes the gag lever post by the mode of fixed gag lever post, because the reinforcing bar is at the in-process of buckling, the thrust that produces is very big, only fix with the spring control slide bar, can not lead to the gag lever post to produce the slope at the reinforcing bar in-process easily, the gag lever post is taken off the pole easily under great shearing force, and because the spring will keep the stability of gag lever post, elastic potential energy is great, so make the gag lever post replacement comparatively hard.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, construction steel bars need to be bent manually by workers, the operation difficulty is increased, the working efficiency is reduced, the universality of bending equipment is poor, and the bending of the steel bars with different sizes is inconvenient.

In order to achieve the purpose, the invention adopts the following technical scheme:

a bending device for construction steel bars comprises an operation table, wherein a bending wheel is installed at the top of the operation table, a mounting hole is formed in the top of the bending wheel, a mounting column is fixedly installed at the top of the operation table and installed in the mounting hole, two limiting grooves are formed in the inner wall of the mounting hole, two control grooves are formed in the mounting column, limiting blocks are installed in the two control grooves in a sliding mode, the limiting blocks are installed in the corresponding limiting grooves, a fixed seat is fixedly installed at the top of the operation table, a fixed groove is formed in the bottom of the fixed seat, the inner walls of the two sides of the fixed groove are both provided with openings, spring grooves are formed in the inner walls of the two sides of the fixed groove, moving rods are installed in the two spring grooves in a sliding mode, a clamping plate is fixedly installed at one end, close to each other, of the two, one end of the spring is fixedly connected to the inner wall of the corresponding spring groove, a fixed cavity is formed in the fixed seat, two moving holes are formed in the inner wall of the bottom of the fixed cavity, moving arms are slidably mounted in the two moving holes, one end of each moving arm is fixedly connected to the corresponding moving rod, racks are fixedly mounted on the sides, close to each other, of the two moving arms, the two racks are slidably mounted in the fixed cavity, a fixed hole is formed in the inner wall of the top of the fixed cavity, a control rod is rotatably mounted in the fixed hole, a gear is fixedly mounted at the bottom end of the control rod, the two racks are meshed with the gear, a control wheel is fixedly mounted at the top end of the control rod, a groove is formed in the top of the operating platform, a guide ring seat is slidably mounted in the groove, an adjusting column is fixedly mounted at the top of the guide ring seat, the one end of bending post is rotated and is installed the bending roller, first thread groove has been seted up to the other end of bending post, the other end fixed mounting who adjusts the post has the motor, the first lead screw of fixedly connected with on the output shaft of motor, first lead screw threaded connection is in first thread groove, lead one side of neck seat and seted up threaded hole, the through-hole has been seted up on one side inner wall of recess, the second lead screw is installed to the through-hole internal rotation, second lead screw threaded connection is in the threaded hole, the one end fixed mounting of second lead screw has the rotation wheel.

Preferably, the inner wall of the moving groove is provided with a sliding groove, the bending column is fixedly provided with a sliding block, and the sliding block is slidably arranged in the sliding groove.

Preferably, the second thread groove has all been seted up to the one end that two stoppers are close to each other, has seted up same connecting hole on the one side inner wall that two control grooves are close to each other, and fixed mounting has two connecting blocks in the connecting hole, all rotates on two connecting blocks and installs the screw rod, and screw rod threaded connection is in the second thread groove that corresponds, and second bevel gear drives two first bevel gear rotations, and first bevel gear drives the screw rod that corresponds and rotates.

Preferably, the equal fixed mounting in one end that two screws are close to each other has first bevel gear, has seted up on the bottom inner wall of connecting hole and has rotated the hole, rotates downthehole rotation and installs the connecting rod, and the one end fixed mounting of connecting rod has the regulating wheel, and the regulating wheel rotates and installs in the bottom of operation panel, and the other end fixed mounting of connecting rod has second bevel gear, and second bevel gear and two first bevel gear meshes, and the regulating wheel drives the connecting rod and rotates, and the connecting rod drives second bevel gear and rotates.

Preferably, all seted up the sliding tray on the both sides inner wall in fixed chamber, the equal fixed mounting in one side of two racks has the sliding block, and sliding block slidable mounting is in the sliding tray that corresponds.

Preferably, the inner wall of control groove has seted up the auxiliary tank, and fixed mounting has the fixed block on the stopper, fixed block and the inner wall sliding connection in auxiliary tank, and the fixed block removes and drives the fixed block and remove, and the fixed block removes the spacing removal of can stabilizing in auxiliary tank.

Preferably, one end of the bending column is provided with a rotating groove, and the bending roller is rotatably arranged in the rotating groove.

Preferably, a control hole is formed in one side of the connecting block, the screw rod is rotatably installed in the control hole, and the screw rod can rotate in the control hole to a stable rotating position.

Compared with the prior art, the invention has the beneficial effects that:

1. this scheme is through placing the reinforcing bar on the operation panel, the control wheel rotates, the control lever drives the gear and rotates, the rack drives the shifting arm removal that corresponds, make the shifting lever drive the grip block removal that corresponds, the spring that the shifting lever extrusion corresponds, place the reinforcing bar in the fixed slot, loosen the control wheel, two grip blocks can carry out the centre gripping to the reinforcing bar fixed, can fix the position of reinforcing bar temporarily, rotate the rotation wheel, the second lead screw can drive the leading seat and remove, it removes to adjust the post drive bending roll, adjustable bending roll's position of use, it rotates to drive first lead screw through setting up the motor, the post drive bending roll removes of bending.

The bending device for the construction steel bars is reasonable in structure and convenient to operate, can be used for automatically bending, reduces the difficulty of operation, improves the working efficiency, is flexible in structure, facilitates the bending of steel bars with different sizes, and can replace the bending wheels.

2. According to the scheme, the adjusting wheel is rotated, the connecting rod drives the second bevel gear to rotate, the first bevel gear drives the corresponding screw to rotate, the limiting block slides into the limiting groove, the fixing of the bending wheel on the mounting column can be limited, and the bending wheel can be replaced; and after the motor stops, the mounting column is fixed through the stopper and then the stability is improved, the mounting column is not easy to break away from, when the mounting column needs to be replaced, the adjusting wheel rotates reversely, the limiting block slides out of the limiting groove, and the fixed limit of the bending wheel on the mounting column can be cancelled.

Drawings

FIG. 1 is a schematic view of a front view structure according to the present invention;

FIG. 2 is a schematic structural diagram of the fixing base, the clamping plate, the moving arm and the control wheel according to the present invention;

FIG. 3 is a schematic view of part A of the structure proposed by the present invention;

FIG. 4 is a schematic structural diagram of part B according to the present invention;

fig. 5 is a schematic structural view of a bending column and a bending roller according to the present invention.

In the figure: 1. an operation table; 2. bending wheels; 3. mounting holes; 4. mounting a column; 5. a limiting groove; 6. a limiting block; 7. a fixed seat; 8. fixing grooves; 9. a travel bar; 10. a clamping plate; 11. a spring; 12. an adjustment column; 13. a moving groove; 14. bending the column; 15. a first lead screw; 16. a motor; 17. a second lead screw; 18. a groove; 19. a rotating wheel; 20. bending rollers; 21. a screw; 22. connecting blocks; 23. a first bevel gear; 24. a second bevel gear; 25. a moving arm; 26. a rack; 27. a control wheel; 28. a gear; 29. a fixed cavity; 30. the hole is moved.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of this patent does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.

Example one

Referring to fig. 1-5, a construction steel bar bending device comprises an operation table 1, a bending wheel 2 is installed at the top of the operation table 1, a mounting hole 3 is formed at the top of the bending wheel 2, a mounting post 4 is fixedly installed at the top of the operation table 1, the mounting post 4 is installed in the mounting hole 3, two limiting grooves 5 are formed in the inner wall of the mounting hole 3, two control grooves are formed in the mounting post 4, a limiting block 6 is slidably installed in each of the two control grooves, the limiting block 6 is installed in the corresponding limiting groove 5, a fixed seat 7 is fixedly installed at the top of the operation table 1, a fixed groove 8 is formed in the bottom of the fixed seat 7, the inner walls at two sides of the fixed groove 8 are both open, spring grooves are formed in the inner walls at two sides of the fixed groove 8, moving rods 9 are slidably installed in each of the two spring grooves, a clamping, two clamping plates 10 are matched, one ends of two moving rods 9 far away from each other are fixedly provided with springs 11, one ends of the springs 11 are fixedly connected to the inner walls of corresponding spring grooves, a fixed cavity 29 is formed in a fixed seat 7, two moving holes 30 are formed in the inner wall of the bottom of the fixed cavity 29, moving arms 25 are slidably mounted in the two moving holes 30, one end of each moving arm 25 is fixedly connected to the corresponding moving rod 9, racks 26 are fixedly mounted on one sides of the two moving arms 25 close to each other, the two racks 26 are slidably mounted in the fixed cavity 29, a fixed hole is formed in the inner wall of the top of the fixed cavity 29, a control rod is rotatably mounted in the fixed hole, a gear 28 is fixedly mounted at the bottom end of the control rod, the two racks 26 are meshed with the gear 28, a control wheel 27 is fixedly mounted at the top end of the control rod, a groove 18 is formed in the top of an operating platform 1, the top fixed mounting who draws the neck seat has the regulation post 12, shifting chute 13 has been seted up to the one end of regulation post 12, slidable mounting has bending post 14 in shifting chute 13, bending roller 20 has been installed in the rotation of bending post 14's one end, first thread groove has been seted up to bending post 14's the other end, the other end fixed mounting of regulation post 12 has motor 16, first lead screw 15 of fixedly connected with on the output shaft of motor 16, first lead screw 15 threaded connection is in first thread groove, draw one side of neck seat and seted up the screw hole, the through-hole has been seted up on one side inner wall of recess 18, the second lead screw 17 is installed to the through-hole internal rotation, second lead screw 17 threaded mounting is in the thread hole, the one end fixed mounting of second lead screw 17 has runner.

In this embodiment, the inner wall of the moving slot 13 is provided with a sliding slot, the bending column 14 is fixedly provided with a sliding block, and the sliding block is slidably mounted in the sliding slot.

In this embodiment, the second thread groove has all been seted up to the one end that two stopper 6 are close to each other, has seted up same connecting hole on the one side inner wall that two control grooves are close to each other, and fixed mounting has two connecting blocks 22 in the connecting hole, all rotates on two connecting blocks 22 and installs screw rod 21, and screw rod 21 threaded connection is in the second thread groove that corresponds, and second bevel gear 24 drives two first bevel gears 23 and rotates, and first bevel gear 23 drives the screw rod 21 rotation that corresponds.

In this embodiment, the equal fixed mounting of one end that two screws 21 are close to each other has first bevel gear 23, has seted up on the bottom inner wall of connecting hole and has rotated the hole, rotate downthehole rotation and install the connecting rod, the one end fixed mounting of connecting rod has the regulating wheel, the regulating wheel rotates and installs in the bottom of operation panel 1, the other end fixed mounting of connecting rod has second bevel gear 24, second bevel gear 24 and two first bevel gear 23 meshes, the regulating wheel drives the connecting rod and rotates, the connecting rod drives second bevel gear 24 and rotates.

In this embodiment, all seted up the sliding tray on the both sides inner wall of fixed chamber 29, the equal fixed mounting in one side of two racks 26 has the sliding block, and sliding block slidable mounting is in the sliding tray that corresponds.

In this embodiment, seted up the auxiliary tank on the inner wall of control tank, fixed mounting has the fixed block on the stopper 6, the inner wall sliding connection in fixed block and auxiliary tank, stopper 6 removes and drives the fixed block and remove, but the fixed block removes at auxiliary tank removal stable stopper 6.

In this embodiment, a turning groove is formed at one end of the bending column 14, and the bending roller 20 is rotatably installed in the turning groove.

In this embodiment, a control hole is formed in one side of the connecting block 22, the screw 21 is rotatably installed in the control hole, and the screw 21 can rotate in the control hole to stabilize the rotating position.

Example two

Referring to fig. 1-5, a construction steel bar bending device comprises an operation table 1, a bending wheel 2 is installed on the top of the operation table 1, a mounting hole 3 is formed in the top of the bending wheel 2, a mounting post 4 is fixedly installed on the top of the operation table 1 through a bolt, the mounting post 4 is installed in the mounting hole 3, two limiting grooves 5 are formed in the inner wall of the mounting hole 3, two control grooves are formed in the mounting post 4, a limiting block 6 is slidably installed in each of the two control grooves, the limiting block 6 is installed in the corresponding limiting groove 5, a fixing seat 7 is fixedly installed on the top of the operation table 1 through a bolt, a fixing groove 8 is formed in the bottom of the fixing seat 7, the inner walls of the two sides of the fixing groove 8 are both open, spring grooves are formed in the inner walls of the two sides of the fixing groove 8, moving rods 9 are slidably installed in each of the two spring grooves, two clamping plates 10 are matched, one ends of two moving rods 9 which are far away from each other are fixedly provided with springs 11 through bolts, one ends of the springs 11 are fixedly connected to the inner walls of corresponding spring grooves, a fixed cavity 29 is arranged on a fixed seat 7, two moving holes 30 are arranged on the inner wall of the bottom of the fixed cavity 29, moving arms 25 are respectively and slidably arranged in the two moving holes 30, one ends of the moving arms 25 are fixedly connected to the corresponding moving rods 9, one sides of the two moving arms 25 which are close to each other are respectively and fixedly provided with racks 26 through bolts, the two racks 26 are respectively and slidably arranged in the fixed cavity 29, the inner wall of the top of the fixed cavity 29 is provided with a fixed hole, a control rod is rotatably arranged in the fixed hole, the bottom end of the control rod is fixedly provided with a gear 28 through bolts, the two racks 26 are respectively engaged with the gear 28, and the top end, the top of operation panel 1 is seted up flutedly 18, slidable mounting has the guide seat in recess 18, there is regulation post 12 at the top of guide seat through bolt fixed mounting, shifting chute 13 has been seted up to the one end of regulation post 12, slidable mounting has bending post 14 in the shifting chute 13, bending roller 20 is installed in the one end rotation of bending post 14, first thread groove has been seted up to the other end of bending post 14, there is motor 16 at the other end of regulation post 12 through bolt fixed mounting, fixedly connected with first lead screw 15 on the output shaft of motor 16, first lead screw 15 threaded connection is in first thread groove, lead one side of guide seat and seted up the screw hole, the through-hole has been seted up on one side inner wall of recess 18, second lead screw 17 is installed to the through-hole internal rotation, second lead screw 17 threaded mounting is in the thread hole, the one end of second lead screw 17 has runner 19 through.

In this embodiment, the inner wall of the moving slot 13 is provided with a sliding slot, the bending column 14 is fixedly provided with a sliding block through a bolt, and the sliding block is slidably mounted in the sliding slot.

In this embodiment, the second thread groove has all been seted up to the one end that two stopper 6 are close to each other, has seted up same connecting hole on the one side inner wall that two control grooves are close to each other, has two connecting blocks 22 through bolt fixed mounting in the connecting hole, all rotates on two connecting blocks 22 and installs screw rod 21, screw rod 21 threaded connection is in the second thread groove that corresponds, second bevel gear 24 drives two first bevel gears 23 and rotates, first bevel gear 23 drives the screw rod 21 rotation that corresponds.

In this embodiment, the one end that two screw rods 21 are close to each other all has first bevel gear 23 through bolt fixed mounting, the rotation hole has been seted up on the bottom inner wall of connecting hole, the connecting rod is installed in the rotation hole rotation, bolt fixed mounting has the regulating wheel through bolt fixed mounting to the one end of connecting rod, the regulating wheel rotates the bottom of installing at operation panel 1, the other end of connecting rod has second bevel gear 24 through bolt fixed mounting, second bevel gear 24 and two first bevel gear 23 meshes, the regulating wheel drives the connecting rod and rotates, the connecting rod drives second bevel gear 24 and rotates.

In this embodiment, all seted up the sliding tray on the both sides inner wall of fixed chamber 29, there is the sliding block one side of two racks 26 all through bolt fixed mounting, and sliding block slidable mounting is in the sliding tray that corresponds.

In this embodiment, seted up the auxiliary tank on the inner wall of control tank, have the fixed block through bolt fixed mounting on the stopper 6, the inner wall sliding connection in fixed block and auxiliary tank, stopper 6 removes and drives the fixed block and remove, but the fixed block removes at auxiliary tank removal stable stopper 6.

In this embodiment, a turning groove is formed at one end of the bending column 14, and the bending roller 20 is rotatably installed in the turning groove.

In this embodiment, a control hole is formed in one side of the connecting block 22, the screw 21 is rotatably installed in the control hole, and the screw 21 can rotate in the control hole to stabilize the rotating position.

In this embodiment, by placing the reinforcing steel bar on the operation table 1, rotating the control wheel 27, the control wheel 27 drives the control rod to rotate, the control rod drives the gear 28 to rotate, the gear 28 drives the two racks 26 to move, the racks 26 drive the corresponding moving arms 25 to move, the moving arms 25 drive the corresponding moving rods 9 to move, so that the moving rods 9 drive the corresponding clamping plates 10 to move, the two clamping plates 10 move in the direction away from each other, the moving rods 9 extrude the corresponding springs 11, the springs 11 elastically deform, the reinforcing steel bar is placed in the fixing grooves 8, the control wheel 27 is released, the clamping plates 10 are reset under the elastic action of the springs 11, the two clamping plates 10 can clamp and fix the reinforcing steel bar, the position of the reinforcing steel bar can be temporarily fixed, the rotating wheel 19 is rotated, the rotating wheel 19 drives the second lead screw 17 to rotate, the second lead screw 17 can drive the lead seat to move, the lead seat can drive the adjusting column 12 to move, the adjusting column 12 drives the bending roller 20 to move, the using position of the bending roller 20 can be adjusted, the motor 16 drives the first screw rod 15 to rotate, the first screw rod 15 drives the bending column 14 to move, the bending column 14 drives the bending roller 20 to move, and the bending roller 20 bends the steel bars on the bending wheel 2.

In addition, the connecting rod drives the second bevel gear to rotate by rotating the adjusting wheel, the first bevel gear drives the corresponding screw to rotate, and the limiting block slides into the limiting groove, so that the fixing of the bending wheel on the mounting column can be limited, and the bending wheel can be replaced; and after the motor stops, the mounting column is fixed through the stopper and then the stability is improved, the mounting column is not easy to break away from, when the mounting column needs to be replaced, the adjusting wheel rotates reversely, the limiting block slides out of the limiting groove, and the fixed limit of the bending wheel on the mounting column can be cancelled.

Compared with the prior art, the invention has the technical progress that: the bending device for the construction steel bars is reasonable in structure and convenient to operate, can be used for automatically bending, reduces the difficulty of operation, improves the working efficiency, is flexible in structure, facilitates the bending of steel bars with different sizes, and can replace the bending wheels 2.