CN113333629A

CN113333629A - Reinforcing steel bar bending device for building and bending method thereof

Info

Publication number: CN113333629A
Application number: CN202110673916.3A
Authority: CN
Inventors: 黄朝辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-09-03

Abstract

The invention discloses a steel bar bending device for a building and a bending method thereof, relating to the technical field of steel bar bending; the problem that the reinforcing steel bars are unstable in fixation and easy to rotate is solved; the device comprises a shell and a fixing frame, wherein two annular grooves with different diameters are formed in the inner wall of the top of the shell, a sliding column is connected to the inner wall of each annular groove in a sliding mode, two groups of limiting mechanisms are arranged on the outer wall of each sliding column, and each group of limiting mechanisms respectively comprises an arc-shaped fixing plate, an electric telescopic rod and an agnail; the bending method of the device comprises the following steps: fixing by using a limiting mechanism; clamping by using a sliding frame; fixing by using a limiting plate; utilizing a limiting mechanism; and (5) bending. According to the invention, the limiting mechanism is arranged, so that the tail end of the steel bar can be tracked and fixed, the two arc-shaped fixing plates are rotated to be in contact with the steel bar, and the barb on the arc-shaped fixing plate can catch the steel bar due to the unsmooth surface of the steel bar, and meanwhile, the steel bar can be prevented from rotating by matching with the arc-shaped clamping groove II.

Description

Reinforcing steel bar bending device for building and bending method thereof

Technical Field

The invention relates to the technical field of steel bar bending, in particular to a steel bar bending device for buildings and a bending method thereof.

Background

With the gradual development of economic construction in China, civil engineering is carried out all over the country, various houses, office buildings, road engineering and other construction projects are built, steel bar members are main components of building engineering structures, and steel bars need to be bent during the use process of the steel bars in the building according to the use requirements, so that a steel bar bending device for the building is needed.

Through the retrieval, chinese patent application No. 201921989272.3's patent, a bending device of reinforcing bar for building is disclosed, comprises a workbench, first spacing post, the spacing post of second, the post of bending, the hydraulic stem, the lead screw, ball nut, slider and ejector pad, equal fixedly connected with heel post all around of the bottom of workstation, first spacing post and the spacing post of second parallel fixed connection in the top of workstation, and the clearance that forms between first spacing post and the spacing post of second can let the reinforcing bar body pass, hydraulic stem fixed connection is in the top of workstation, and the output fixed connection of hydraulic stem presses. The bending device for the reinforcing steel bar for buildings in the patent has the following defects: when buckling the reinforcing bar, not retraining the reinforcing bar top very easily leads to the reinforcing bar to take place to rotate, leads to the reverse skew that takes place of buckling, influences the quality of reinforcing bar.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a reinforcing steel bar bending device for buildings and an operation method thereof.

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

the utility model provides a reinforcing bar bending device for building, which comprises an outer shell and a fixed frame, the different ring channel of two diameters is seted up to shell top inner wall, ring channel inner wall sliding connection has the slip post, slip post outer wall is provided with two sets of stop gear, every stop gear of group includes arc fixed plate respectively, electric telescopic handle and barb, slip post top inner wall rotates and is connected with the rotation seat, the outer wall welding of rotation seat top has arc draw-in groove two, the backup pad of slope has been welded respectively to rotation seat top outer wall both sides, arc fixed plate rotates and connects in backup pad one side outer wall, electric telescopic handle articulates in backup pad one side outer wall, electric telescopic handle's flexible end is articulated mutually with the.

Preferably: the outer wall welding of fixed bolster top has arc draw-in groove one more than three, and the least significant end of arc draw-in groove one is in same horizontal plane with the least significant end of arc draw-in groove two.

Further: the mount welds in shell top inner wall, and the sliding tray has been seted up respectively to mount top inner wall both sides, and sliding tray inner wall both sides sliding connection has the carriage respectively, and per two carriages are located wherein between two adjacent arc draw-in grooves one, and the sliding tray inner wall rotates and is connected with the lead screw, and two lead screws are connected through the belt, and the screw thread opposite direction of lead screw circumference outer wall both sides, and mount one side outer wall has motor two through the fix with screw, and motor two's output shaft is connected with the lead screw through the shaft coupling.

Further preferred is: the outer wall of one side that the carriage is close to the top articulates there is the guide plate, and carriage one side outer wall articulates there is spring two, and spring two is articulated mutually with the guide plate, and carriage one side inner wall sliding connection has two slide bars two, and two outer walls of slide bar rotate and are connected with same fixed roll, and two outer wall joints of slide bar have spring one, and spring one is connected with carriage one side outer wall, and the welding has the mount pad respectively in mount top outer wall both sides.

As a preferable aspect of the present invention: the outer wall of the top of the mounting seat is rotatably connected with a fixing fork and a limiting plate respectively, the outer wall of one side of the limiting plate is provided with a protective pad, fixing grooves are formed in two sides of the outer wall of the limiting plate respectively, the fixing grooves are matched with the fixing fork, and the fixing fork and the limiting plate are located right above one of the arc-shaped clamping grooves.

Further preferred as the invention: the inner wall of the top of the shell is rotatably connected with a rotary table, a first motor is fixed on the inner wall of the bottom of the shell through a screw, an output shaft of the first motor is connected with the rotary table through a coupler, and a bending column is connected to the center position of the outer wall of the top of the rotary table in a clamping mode.

As a still further scheme of the invention: three regulation mouth has been seted up to carousel top outer wall, and one of them regulation mouth inner wall joint has the erection column, and erection column outer wall joint has the bending roll.

On the basis of the scheme: the bending roller and the outer wall of the bending column are provided with the same limiting mechanism, the limiting mechanism comprises two supporting sleeves I, two supporting sleeves II, an adjusting rod and two limiting sleeves, the inner walls of the tops of the bending column and the bending roller are respectively connected with a fixing bolt through threads, one supporting sleeve is respectively rotatably connected to the outer wall of the top of the fixing bolt, and the two supporting sleeves are respectively slidably connected to the inner walls of one side of the two supporting sleeves.

On the basis of the foregoing scheme, it is preferable that: two support two one side outer wall sliding connection of cover has sliding sleeve, and two support two bottom outer wall joints of cover have spring three, and spring three is connected with sliding sleeve bottom inner wall, and sliding sleeve outer wall joint has the bracing piece, and two stop collars are sliding connection respectively in the bracing piece outer wall, adjusts pole sliding connection in two stop collar inner walls.

A bending method of a reinforcing steel bar bending device for buildings comprises the following steps:

s1: placing the reinforcing steel bars on the first arc-shaped clamping grooves and the second arc-shaped clamping grooves, and then rotating the two arc-shaped fixing plates by using the electric telescopic rods to enable the reinforcing steel bars to be in contact with the reinforcing steel bars, wherein the surfaces of the reinforcing steel bars are not smooth, and barbs on the arc-shaped fixing plates can catch the reinforcing steel bars;

s2: starting a motor II, driving the sliding frame to move, enabling the fixing roller to contact the reinforcing steel bar and compress the spring I, and well fixing the reinforcing steel bar under the action of the spring I, wherein the fixing roller is rotatably arranged, so that the movement of the reinforcing steel bar is not influenced during bending;

s3: a user rotates the limiting plate to be in contact with the reinforcing steel bar, the protective pad of the limiting plate can prevent the reinforcing steel bar from rotating, and then the fixing fork is rotated to be clamped in the fixing groove in the limiting plate, so that fixing is completed;

s4: clamping the mounting column in each adjusting opening to change the distance between the bending column and the bending roller, sliding the two limiting sleeves on the adjusting rods, sliding the sliding support sleeve II in the support sleeve I, adjusting according to the distance between the bending column and the bending roller, and fixing the limiting mechanisms on the bending column and the bending roller by using fixing bolts;

s5: the first starting motor drives the bending roller to rotate, so that the reinforcing steel bar is bent, the sliding column can slide along the arranged annular groove at the moment, the end part of the reinforcing steel bar is always kept fixed, and the rotating deformation and the shaking generation can be prevented.

The invention has the beneficial effects that:

1. through being provided with stop gear, can trail fixedly to the end of reinforcing bar, when using, place the reinforcing bar on arc draw-in groove one and arc draw-in groove two, then utilize electric telescopic handle, rotate two arc fixed plates, make and contact with the reinforcing bar, because the reinforcing bar surface is rough, the reinforcing bar can be grasped to barb on arc fixed plate, cooperate arc draw-in groove two simultaneously, can prevent that the reinforcing bar from rotating, then bend the reinforcing bar, the post that slides this moment can slide along the ring channel that sets up, tip to the reinforcing bar remains fixed throughout, can prevent to rotate deformation and produce and rock.

2. Through being provided with the mount, arc draw-in groove one on the mount is used for the support bar, prevent to control and rock, in order further to fix it, be provided with the carriage, two relative sliders are under the drive of lead screw, can be close to each other, thereby fix the reinforcing bar, starter motor two, it removes to drive the carriage, with fixation roller contact reinforcing bar and compression spring one, under the effect of spring one, fixation bar that can be fine, wherein the fixation roller sets up for rotating, can be when bending, do not influence the removal of reinforcing bar.

3. Through being provided with fixed fork and limiting plate, can be when fixed reinforcing bar about the carriage, fixed to its from the top to fixed fork and limiting plate rotate the setting, can make things convenient for putting into of reinforcing bar, the user rotates the limiting plate to contact with the reinforcing bar, and wherein the protection of limiting plate fills up and can prevent that the reinforcing bar from rotating, rotates fixed fork this moment again, with the fixed fork card in the fixed slot on the limiting plate, accomplish fixedly.

4. Through being provided with the carousel, be provided with crooked post and bending roll on the carousel, the reinforcing bar is put into between crooked post and the bending roll, starter motor one drives the bending roll and rotates to bend the reinforcing bar, in order to adapt to the reinforcing bar of equidimension not, be provided with three regulation mouth, can be through blocking the erection column in each regulation mouth, change the distance between crooked post and the bending roll, thereby realize bending of different reinforcing bars.

5. Through setting up through being provided with stop gear, stop gear is used for the reinforcing bar of fixed crooked post and bending roll department, can prevent that the position that the reinforcing bar is crooked from upspring, stop gear can adjust according to the position of erection column, slide two stop collars on adjusting the pole, slide and support cover two and slide in supporting cover one, thereby adjust according to the distance of crooked post and bending roll, be provided with fixing bolt simultaneously, support cover one and rotate on fixing bolt, can not influence the bending of bending roll to the reinforcing bar.

Drawings

Fig. 1 is a schematic front view of a reinforcing bar bending apparatus for a building according to the present invention;

fig. 2 is a schematic structural view of a fixing frame of a reinforcing bar bending apparatus for a building according to the present invention;

fig. 3 is a schematic view of a sliding frame structure of a reinforcing bar bending device for building according to the present invention;

fig. 4 is a schematic structural view of the bottom of a sliding column of the reinforcing bar bending device for building according to the present invention;

fig. 5 is a schematic top view of a bending column of a reinforcing bar bending apparatus for a building according to the present invention;

fig. 6 is a schematic diagram of a limiting plate of the reinforcing bar bending device for building according to the present invention.

In the figure: the device comprises a shell 1, a first motor 2, a first fixing frame 3, a second limiting plate 4, a first adjusting opening 5, a bent column 6, a rotary table 7, a sliding column 8, a ring-shaped groove 9, a lead screw 10, a second motor 11, a belt 12, a sliding frame 13, a first arc-shaped clamping groove 14, a guide plate 15, a fixed roller 16, a first spring 17, a second sliding rod 18, a second spring 19, a second arc-shaped fixing plate 20, a supporting plate 21, a second arc-shaped clamping groove 22, a rotating seat 23, an electric telescopic rod 24, a barb 25, a fixing bolt 26, a first 27 supporting sleeve 28, a second 29 supporting sleeve 29, a third spring 30, a bent roller 31, an installation column 31, a sliding sleeve 32, an adjusting rod 33, a limiting sleeve 34, a fixing fork 35, a 36 installation seat, a 37 fixing groove and a protective pad 38.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

A reinforcing steel bar bending device for buildings is shown in figures 1, 2 and 4 and comprises a shell 1 and a fixed frame 3, wherein two annular grooves 9 with different diameters are formed in the inner wall of the top of the shell 1, a sliding column 8 is connected to the inner wall of each annular groove 9 in a sliding mode, two sets of limiting mechanisms are arranged on the outer wall of each sliding column 8, each set of limiting mechanism comprises an arc-shaped fixing plate 20, an electric telescopic rod 24 and an agnail 25, a rotating seat 23 is connected to the inner wall of the top of each sliding column 8 in a rotating mode, an arc-shaped clamping groove two 22 is welded to the outer wall of the top of each rotating seat 23, inclined supporting plates 21 are welded to two sides of the outer wall of the top of each rotating seat 23 respectively, each arc-shaped fixing plate 20 is connected to the outer wall of one side of each supporting plate 21 in a rotating mode, the electric telescopic, the lowest end of the first arc-shaped clamping groove 14 and the lowest end of the second arc-shaped clamping groove 22 are positioned on the same horizontal plane; through being provided with stop gear, can track fixedly to the end of reinforcing bar, when using, place the reinforcing bar on arc draw-in groove one 14 and arc draw-in groove two 22, then utilize electric telescopic handle 24, rotate two arc fixed plate 20, make and contact with the reinforcing bar, because the reinforcing bar surface is not smooth, barb 25 on arc fixed plate 20 can grasp the reinforcing bar, cooperate arc draw-in groove two 22 simultaneously, can prevent that the reinforcing bar from rotating, then bend the reinforcing bar, slide post 8 can slide along the ring channel 9 that sets up this moment, tip to the reinforcing bar remains fixed throughout, can prevent to rotate deformation and produce and rock.

In order to fix the other end of the steel bar; as shown in fig. 1, 2, 3 and 6, the fixing frame 3 is welded on the inner wall of the top of the housing 1, two sides of the inner wall of the top of the fixing frame 3 are respectively provided with a sliding groove, two sides of the inner wall of the sliding groove are respectively connected with a sliding frame 13 in a sliding manner, every two sliding frames 13 are positioned between two adjacent arc-shaped clamping grooves 14, the inner wall of the sliding groove is rotatably connected with a screw rod 10, the two screw rods 10 are connected through a belt 12, the thread directions of two sides of the circumferential outer wall of the screw rod 10 are opposite, the outer wall of one side of the fixing frame 3 is fixed with a motor II 11 through screws, the output shaft of the motor II 11 is connected with the screw rod 10 through a coupler, the outer wall of one side of the sliding frame 13 close to the top is hinged with a guide plate 15, the outer wall of one side of the sliding frame 13 is hinged with a spring II 19, the spring II 19 is hinged with the guide plate 15, the inner wall of one side of the sliding frame 13 is slidably connected with two sliding rods 18, the outer wall of the same fixing roller 16 is rotatably connected with the two sliding rods 18, a first spring 17 is clamped on the outer wall of the second sliding rod 18, the first spring 17 is connected with the outer wall of one side of the sliding frame 13, mounting seats 36 are welded on two sides of the outer wall of the top of the fixing frame 3 respectively, the outer wall of the top of each mounting seat 36 is connected with a fixed fork 35 and a limiting plate 4 in a rotating mode respectively, a protective pad 38 is arranged on the outer wall of one side of each limiting plate 4, fixing grooves 37 are formed in two sides of the outer wall of each limiting plate 4 respectively, the fixing grooves 37 are matched with the fixed forks 35, and the fixed forks 35 and the limiting plates 4 are located right above one arc-shaped clamping grooves 14; the fixing frame 3 is arranged, the first arc-shaped clamping groove 14 in the fixing frame 3 is used for supporting a steel bar and preventing left and right shaking, in order to further fix the steel bar, the sliding frames 13 are arranged, the two opposite sliding frames 13 can be close to each other under the driving of the screw rod 10 so as to fix the steel bar, the second motor 11 is started to drive the sliding frames 13 to move, the fixing rollers 16 are in contact with the steel bar and compress the first spring 17, the steel bar can be well fixed under the action of the first spring 17, and the fixing rollers 16 are rotatably arranged and can be bent without influencing the movement of the steel bar; through being provided with stationary fork 35 and limiting plate 4, can be when carriage 13 left and right sides fixed reinforcement, fixed to its from the top to it to stationary fork 35 and limiting plate 4 rotate the setting, can make things convenient for putting into of reinforcing bar, the user rotates limiting plate 4 to contact with the reinforcing bar, and wherein limiting plate 4's protection pad 38 can prevent that the reinforcing bar from rotating, rotates stationary fork 35 this moment again, with stationary fork 35 card in fixed slot 37 on limiting plate 4, accomplish fixedly.

In order to further protect the reinforcing steel bar while bending the reinforcing steel bar; as shown in fig. 1 and 5, a rotating disc 7 is rotatably connected to the inner wall of the top of the housing 1, a motor 12 is fixed to the inner wall of the bottom of the housing 1 through screws, an output shaft of the motor 2 is connected to the rotating disc 7 through a coupler, a bending column 6 is clamped at the central position of the outer wall of the top of the rotating disc 7, three adjusting ports 5 are formed in the outer wall of the top of the rotating disc 7, a mounting column 31 is clamped to the inner wall of one of the adjusting ports 5, a bending roller 30 is clamped to the outer wall of the mounting column 31, the same limiting mechanism is arranged on the outer walls of the bending roller 30 and the bending column 6, the limiting mechanism comprises two support sleeves one 27, two support sleeves two 28, an adjusting rod 33 and two limiting sleeves 34, the fixing bolts 26 are respectively connected to the inner walls of the tops of the bending column 6 and the bending roller 30 through threads, the two support sleeves one 27 are respectively rotatably connected to the outer wall of the top of the fixing bolts 26, the two support sleeves two 28 are respectively slidably connected to the inner wall on one side of the one 27, the outer wall of one side of each of the two second support sleeves 28 is connected with a sliding sleeve 32 in a sliding mode, the outer wall of the bottom of each of the two second support sleeves 28 is connected with a third spring 29 in a clamping mode, the third spring 29 is connected with the inner wall of the bottom of the sliding sleeve 32, the outer wall of the sliding sleeve 32 is connected with a support rod in a clamping mode, the two limiting sleeves 34 are connected to the outer wall of the support rod in a sliding mode respectively, and the adjusting rod 33 is connected to the inner walls of the two limiting sleeves 34 in a sliding mode; the steel bar bending device is provided with the turntable 7, the bending column 6 and the bending roller 30 are arranged on the turntable 7, steel bars are placed between the bending column 6 and the bending roller 30, the motor I2 is started to drive the bending roller 30 to rotate, so that the steel bars are bent, three adjusting openings 5 are formed in order to adapt to the steel bars with different sizes, and the distance between the bending column 6 and the bending roller 30 can be changed by clamping the mounting columns 31 in the adjusting openings 5; through being provided with stop gear, stop gear is used for the reinforcing bar of fixed crooked post 6 and bending roll 30 department, can prevent that the position that the reinforcing bar is crooked from upspring, stop gear can adjust according to the position of erection column 31, slide two stop collars 34 on adjusting pole 33, slide support cover two 28 and slide in support cover one 27, thereby adjust according to the distance of crooked post 6 and bending roll 30, be provided with fixing bolt 26 simultaneously, support cover one 27 and rotate on fixing bolt 26, can not influence the crooked of bending roll 30 to the reinforcing bar.

When the reinforcing steel bar fixing device is used, reinforcing steel bars are placed on the first arc-shaped clamping grooves 14 and the second arc-shaped clamping grooves 22, then the two arc-shaped fixing plates 20 are rotated by the electric telescopic rods 24, so that the reinforcing steel bars are in contact with the reinforcing steel bars, and the reinforcing steel bars can be grabbed by the barbs 25 on the arc-shaped fixing plates 20 due to the fact that the surfaces of the reinforcing steel bars are not smooth; starting a second motor 11, driving a sliding frame 13 to move, enabling a fixing roller 16 to contact the reinforcing steel bar and compress a first spring 17, and well fixing the reinforcing steel bar under the action of the first spring 17, wherein the fixing roller 16 is rotatably arranged, so that the movement of the reinforcing steel bar is not influenced when the reinforcing steel bar is bent; a user rotates the limiting plate 4 to be in contact with the steel bars, wherein the protective pad 38 of the limiting plate 4 can prevent the steel bars from rotating, and then rotates the fixing fork 35 to clamp the fixing fork 35 in the fixing groove 37 on the limiting plate 4, so that fixing is completed; the mounting columns 31 are clamped in the adjusting openings 5 to change the distance between the bending column 6 and the bending roller 30, the two limiting sleeves 34 slide on the adjusting rods 33, the sliding support sleeves II 28 slide in the support sleeves I27 and are adjusted according to the distance between the bending column 6 and the bending roller 30, and then the limiting mechanisms are fixed on the bending column 6 and the bending roller 30 through the fixing bolts 26; starting motor 2 drives bending roll 30 and rotates to bend the reinforcing bar, the post 8 that slides this moment can slide along the ring channel 9 that sets up, remains fixed throughout to the tip of reinforcing bar, can prevent to rotate deformation and produce and rock.

s1: placing the steel bars on the first arc-shaped clamping grooves 14 and the second arc-shaped clamping grooves 22, and then rotating the two arc-shaped fixing plates 20 by using the electric telescopic rods 24 to enable the steel bars to be in contact with the steel bars, wherein the surfaces of the steel bars are not smooth, and the barbs 25 on the arc-shaped fixing plates 20 can catch the steel bars;

s2: starting a second motor 11, driving a sliding frame 13 to move, enabling a fixing roller 16 to contact the reinforcing steel bar and compress a first spring 17, and well fixing the reinforcing steel bar under the action of the first spring 17, wherein the fixing roller 16 is rotatably arranged, so that the movement of the reinforcing steel bar is not influenced when the reinforcing steel bar is bent;

s3: a user rotates the limiting plate 4 to be in contact with the steel bars, wherein the protective pad 38 of the limiting plate 4 can prevent the steel bars from rotating, and then rotates the fixing fork 35 to clamp the fixing fork 35 in the fixing groove 37 on the limiting plate 4, so that fixing is completed;

s4: the mounting columns 31 are clamped in the adjusting openings 5 to change the distance between the bending column 6 and the bending roller 30, the two limiting sleeves 34 slide on the adjusting rods 33, the sliding support sleeves II 28 slide in the support sleeves I27 and are adjusted according to the distance between the bending column 6 and the bending roller 30, and then the limiting mechanisms are fixed on the bending column 6 and the bending roller 30 through the fixing bolts 26;

s5: starting motor 2 drives bending roll 30 and rotates to bend the reinforcing bar, the post 8 that slides this moment can slide along the ring channel 9 that sets up, remains fixed throughout to the tip of reinforcing bar, can prevent to rotate deformation and produce and rock.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a reinforcing bar bending device for building, including shell (1) and mount (3), a serial communication port, two ring channels (9) that the diameter is different are seted up to shell (1) top inner wall, ring channel (9) inner wall sliding connection has sliding column (8), sliding column (8) outer wall is provided with two sets of stop gear, every stop gear of group includes arc fixed plate (20), electric telescopic handle (24) and barb (25) respectively, sliding column (8) top inner wall rotates and is connected with rotation seat (23), rotation seat (23) top outer wall welding has arc draw-in groove two (22), rotation seat (23) top outer wall both sides weld respectively inclined backup pad (21), arc fixed plate (20) rotate and connect in backup pad (21) one side outer wall, electric telescopic handle (24) articulate in backup pad (21) one side outer wall, the flexible end of electric telescopic handle (24) articulates with arc fixed plate (20), the barb (25) is arranged on the outer wall of the bottom of the arc-shaped fixing plate (20).

2. The reinforcing steel bar bending device for the building as claimed in claim 1, wherein the outer wall of the top of the fixing frame (3) is welded with more than three first arc-shaped clamping grooves (14), and the lowest end of the first arc-shaped clamping groove (14) and the lowest end of the second arc-shaped clamping groove (22) are in the same horizontal plane.

3. The reinforcing steel bar bending device for buildings as claimed in claim 2, wherein the fixing frame (3) is welded on the inner wall of the top of the housing (1), sliding grooves are respectively formed in two sides of the inner wall of the top of the fixing frame (3), sliding frames (13) are respectively slidably connected to two sides of the inner wall of the sliding groove, every two sliding frames (13) are located between two adjacent arc-shaped clamping grooves I (14), the inner wall of the sliding groove is rotatably connected with a screw rod (10), the two screw rods (10) are connected through a belt (12), the directions of threads on two sides of the circumferential outer wall of the screw rod (10) are opposite, a motor II (11) is fixed on the outer wall of one side of the fixing frame (3) through a screw, and an output shaft of the motor II (11) is connected with the screw rod (10) through a coupler.

4. The reinforcing steel bar bending device for buildings as claimed in claim 3, wherein a guide plate (15) is hinged to an outer wall of one side of the sliding frame (13) close to the top, a second spring (19) is hinged to an outer wall of one side of the sliding frame (13), the second spring (19) is hinged to the guide plate (15), two second sliding rods (18) are slidably connected to an inner wall of one side of the sliding frame (13), the same fixed roller (16) is rotatably connected to outer walls of the two second sliding rods (18), a first spring (17) is clamped to outer walls of the two sliding rods (18), the first spring (17) is connected to an outer wall of one side of the sliding frame (13), and mounting seats (36) are respectively welded to two sides of an outer wall of the top of the fixed frame (3).

5. The reinforcing steel bar bending device for the building as claimed in claim 4, wherein the outer wall of the top of the mounting seat (36) is rotatably connected with a fixing fork (35) and a limiting plate (4) respectively, a protective pad (38) is arranged on the outer wall of one side of the limiting plate (4), fixing grooves (37) are formed in two sides of the outer wall of the limiting plate (4) respectively, the fixing grooves (37) are matched with the fixing fork (35), and the fixing fork (35) and the limiting plate (4) are located right above one of the arc-shaped clamping grooves I (14).

6. The reinforcing steel bar bending device for the building as claimed in claim 1, wherein the inner wall of the top of the housing (1) is rotatably connected with a rotary table (7), the inner wall of the bottom of the housing (1) is fixed with a first motor (2) through screws, an output shaft of the first motor (2) is connected with the rotary table (7) through a coupling, and a bending column (6) is clamped at the central position of the outer wall of the top of the rotary table (7).

7. The reinforcing steel bar bending device for the building as claimed in claim 6, wherein the outer wall of the top of the turntable (7) is provided with three adjusting openings (5), wherein an installation column (31) is clamped on the inner wall of one adjusting opening (5), and a bending roller (30) is clamped on the outer wall of the installation column (31).

8. The reinforcing steel bar bending device for the building as claimed in claim 7, wherein the bending roller (30) and the bending column (6) are provided with the same limiting mechanism, the limiting mechanism comprises two first supporting sleeves (27), two second supporting sleeves (28), an adjusting rod (33) and two limiting sleeves (34), the inner walls of the tops of the bending column (6) and the bending roller (30) are respectively connected with a fixing bolt (26) through threads, the two first supporting sleeves (27) are respectively rotatably connected to the outer walls of the tops of the fixing bolts (26), and the two second supporting sleeves (28) are respectively slidably connected to the inner walls of one sides of the two first supporting sleeves (27).

9. The reinforcing steel bar bending device for the building as claimed in claim 8, wherein a sliding sleeve (32) is slidably connected to an outer wall of one side of each of the two support sleeves (28), a spring III (29) is clamped to an outer wall of the bottom of each of the two support sleeves (28), the spring III (29) is connected to an inner wall of the bottom of the sliding sleeve (32), a support rod is clamped to an outer wall of the sliding sleeve (32), the two limit sleeves (34) are respectively slidably connected to outer walls of the support rods, and the adjusting rod (33) is slidably connected to inner walls of the two limit sleeves (34).

10. A bending method for the reinforcing bar bending apparatus for construction according to any one of claims 1 to 9, comprising the steps of:

s1: placing the steel bars on the first arc-shaped clamping groove (14) and the second arc-shaped clamping groove (22), and then rotating the two arc-shaped fixing plates (20) by using the electric telescopic rods (24) to enable the steel bars to be in contact with the steel bars, wherein the barbs (25) on the arc-shaped fixing plates (20) can catch the steel bars due to the fact that the surfaces of the steel bars are not smooth;

s2: starting a second motor (11), driving a sliding frame (13) to move, enabling a fixing roller (16) to contact the reinforcing steel bar and compress a first spring (17), and well fixing the reinforcing steel bar under the action of the first spring (17), wherein the fixing roller (16) is rotatably arranged, so that the movement of the reinforcing steel bar is not influenced when the reinforcing steel bar is bent;

s3: a user rotates the limiting plate (4) to be in contact with the steel bar, wherein the protective pad (38) of the limiting plate (4) can prevent the steel bar from rotating, and at the moment, the fixing fork (35) is rotated to clamp the fixing fork (35) in the fixing groove (37) on the limiting plate (4) to complete fixing;

s4: clamping the mounting columns (31) in the adjusting openings (5) to change the distance between the bending column (6) and the bending roller (30), sliding the two limiting sleeves (34) on the adjusting rods (33), sliding the sliding support sleeve II (28) in the support sleeve I (27), adjusting according to the distance between the bending column (6) and the bending roller (30), and fixing the limiting mechanism on the bending column (6) and the bending roller (30) by using the fixing bolt (26);

s5: starting motor (2), drive bending roll (30) and rotate to bend the reinforcing bar, slip post (8) this moment can slide along ring channel (9) that set up, remain fixed throughout to the tip of reinforcing bar, can prevent to rotate deformation and produce and rock.