Steel bar bending construction device with angle measurement function and operation method

Abstract

The steel bar bending construction device with the angle measuring function comprises a base and a steel pipe welded to the side face of the base, a to-be-bent steel bar extends out of the steel pipe, and the steel bar bending construction device further comprises a protractor arranged at the end of the base; the spring steel is arranged on the base; the spring steel is provided with the first extending end, and the to-be-bent steel bar part abuts against the spring steel; the arc-shaped groove is formed in the protractor, and the first extending end partially extends out of the arc-shaped groove; the spring steel is provided with a second extending end connecting base; and the first scales are arranged on the protractor. One constructor can bend the to-be-bent steel bar while reading the bending angle of the to-be-bent steel bar in real time, and the bending efficiency is effectively improved. And the influence of rebound of the to-be-bent steel bar on the bending precision is reduced through the compensation value, and the bending precision of the to-be-bent steel bar is effectively improved.

Description

Technical Field

[0001] This application relates to the field of rebar bending technology, and in particular to a rebar bending construction device and operating method with angle measurement function. Background Technology

[0002] Construction engineering refers to the physical engineering project formed through the construction of various buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, and equipment. In the field of construction engineering technology, steel reinforcement is one of the essential materials for constructing concrete structures. Steel reinforcement typically needs to be bent and twisted to adapt to the structural requirements of different parts, such as beams, columns, and slabs. Due to diverse construction needs, steel bars of different diameters need to be bent to different angles on construction sites. Prefabrication alone cannot meet these diverse requirements. Therefore, it is necessary to design a steel bar bending device that can be used on construction sites, enabling construction personnel to bend the steel bars to a preset angle according to construction needs.

[0003] Currently, there are two main problems with steel bar bending operations on construction sites: First, the traditional method requires two people to work together, one bending and the other measuring, and repeatedly checking with an angle gauge, which leads to low efficiency and the measured bending angle error often reaches ±5° or more; Second, the springback effect of steel bars is difficult to control, and novice workers need to try bending many times to master the compensation amount.

[0004] Therefore, it is necessary to propose a steel bar bending construction device and operation method with angle measurement function to improve the steel bar bending efficiency, which has become an important technical problem that needs to be solved urgently. Summary of the Invention

[0005] This application provides a steel bar bending construction device and operation method with angle measurement function, aiming to solve the problems of the existing steel bar bending method, which requires two people to cooperate, one to bend and the other to measure, and repeatedly check with an angle ruler, resulting in low efficiency and the measured bending angle error often reaching ±5° or more; secondly, the steel bar rebound effect is difficult to control, and novice workers need to try bending many times to master the compensation amount.

[0006] To achieve the above objectives, this application proposes a rebar bending construction device with angle measurement function, including a base and a steel pipe welded to the side of the base, with the rebar to be bent extending out of the steel pipe, and further including: a protractor, the protractor being disposed at the end of the base; a spring steel, the spring steel being disposed on the base; a first protruding end, the spring steel being provided with a first protruding end, the portion of the rebar to be bent abutting against the spring steel; an arc-shaped groove, the protractor being provided with an arc-shaped groove, the first protruding end portion extending out of the arc-shaped groove; a second protruding end, the spring steel being provided with a second protruding end connecting to the base; and a first scale, the protractor being provided with a first scale.

[0007] In some embodiments, the device further includes: a drive housing mounted on a base; an input shaft disposed on the drive housing; an output shaft disposed on the drive housing; and a bending rod connected to the output shaft.

[0008] In some embodiments, the drive housing includes: a worm gear connected to an input shaft and rotatably disposed within the drive housing; a worm wheel meshing with the worm gear; and a worm wheel shaft disposed on the worm wheel and rotatably disposed within the drive housing, the worm wheel shaft being connected to an output shaft.

[0009] In some embodiments, the input shaft is further included with a handwheel.

[0010] In some embodiments, the device further includes: a limiting member movably disposed on the steel pipe; and a pushing screw threaded to the steel pipe.

[0011] In some embodiments, it further includes: a first flexible member, which is disposed on the limiting member; and a second flexible member, which is disposed on one side of the base where the steel pipe is disposed.

[0012] In some embodiments, the device further includes: a guide post, wherein the limiting member is provided with a guide post; and a guide hole, wherein the steel pipe is provided with a guide hole, and the guide post is adapted to the guide hole; to limit the movement direction of the limiting member.

[0013] In some embodiments, the system further includes a second scale, wherein the second scale is provided on the base.

[0014] In some embodiments, the base may further include: reinforcing ribs, wherein reinforcing ribs are provided on the base.

[0015] For another purpose of this application, this application also provides a method for bending reinforcing bars. The method uses a reinforcing bar bending construction device with angle measurement function as described above, and the method mainly includes the following steps: S1. Insert the reinforcing bar to be bent into the steel pipe and make the reinforcing bar to be bent abut against the first protruding end; S2. Determine the compensation value based on the diameter of the steel bar to be bent and the preset bending angle; S3. Bend the steel bar to be bent to the compensated bending angle; S4. Unload the force and wait for the bent steel bar to spring back to the preset bending angle under its own elastic force.

[0016] This application proposes a rebar bending construction device with angle measurement function, including a base and a steel pipe welded to the side of the base. The rebar to be bent extends out of the steel pipe. The device also includes: a protractor located at the end of the base; a spring steel plate located on the base; a first protruding end, the spring steel plate having a first protruding end, with the portion of the rebar to be bent abutting against the spring steel plate; an arc-shaped groove, the protractor having an arc-shaped groove, the first protruding end extending out of the arc-shaped groove; a second protruding end, the spring steel plate having a second protruding end connecting to the base; and a first scale, the protractor having a first scale. During the rebar bending process, the rebar to be bent is inserted into the steel pipe, and the portion of the rebar to be bent abuts against the first protruding end. Force is applied to drive the rebar to be bent, causing the first protruding end to rotate within the arc-shaped groove. The construction worker can read the bending angle of the rebar in real time through the first protruding end, the protractor, and the first scale. One person can bend the rebar while simultaneously reading the bending angle, effectively improving bending efficiency. Furthermore, during the bending process of the reinforcing bar, the reinforcing bar is bent to the angle corresponding to the sum of the preset bending angle and the compensation value. After that, the reinforcing bar is released and rebounds under its own elasticity, so that the actual bending angle of the reinforcing bar is approximately equal to the preset bending angle, which effectively improves the bending accuracy of the reinforcing bar. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a three-dimensional structural schematic diagram of a steel bar bending construction device with angle measurement function according to an embodiment of this application; Figure 2 This is a three-dimensional structural schematic diagram of a steel bar bending construction device with angle measurement function according to an embodiment of this application; Figure 3 This is a three-dimensional structural schematic diagram of another steel bar bending construction device with angle measurement function in one embodiment of this application; Figure 4 This is a three-dimensional structural schematic diagram of another rebar bending construction device with angle measurement function in one embodiment of this application; Figure 5 This is a top view of another rebar bending construction device with angle measurement function in one embodiment of this application; Figure 6 for Figure 5 Sectional view at point AA; Figure 7 This is a three-dimensional structural diagram of a rebar bending construction device with angle measurement function, which removes part of the drive box in one embodiment of this application.

[0018] In the diagram: 1. Base; 2. Steel pipe; 3. Spring steel; 4. First protruding end; 5. Reinforcing bar to be bent; 6. First graduation; 7. Arc groove; 8. Protractor; 9. Round steel; 10. Second protruding end; 11. Second graduation; 12. Coupling; 13. Upper housing; 14. Bending rod; 15. Input shaft; 16. Handwheel; 17. First bearing support; 18. Lower housing; 19. Bolt; 20. Push screw; 21. Guide column; 22. Fourth bearing support; 23. Limiting component; 24. First flexible component; 25. Second flexible component; 26. Arc-shaped adapter groove; 27. Reinforcing rib; 28. Worm gear; 29. ​​Second bearing support; 30. Worm. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] Example 1 See Figure 1 and Figure 2 As shown, this embodiment discloses a rebar bending construction device with angle measurement function, including a base 1 and a steel pipe 2 welded to the side of the base 1. The rebar 5 to be bent extends out of the steel pipe 2. The device also includes: a protractor 8, which is disposed at the end of the base 1; a spring steel 3, which is disposed on the base 1; a first protruding end 4, which is provided on the spring steel 3, and part of the rebar 5 to be bent abuts against the spring steel 3; an arc groove 267, which is provided on the protractor 8, and part of the first protruding end 4 extends out of the arc groove 267; a second protruding end 10, which is provided on the spring steel 3 and connected to the base 1; and a first scale 6, which is provided on the protractor 8.

[0021] The steel pipe 2 is connected to the base 1 by vertical welding. The steel pipe 2 and the base 1 form the main structure of the rebar bending construction device. Other structures on the rebar bending construction device are directly or indirectly connected to the steel pipe 2 or the base 1. Specifically, during the rebar bending process, the rebar to be bent 5 is simply inserted into the steel pipe 2, with part of the rebar 5 extending out of the steel pipe 2. Applying force to the part of the rebar 5 extending out of the steel pipe 2 will bend the rebar 5 to a preset angle.

[0022] The protractor 8 is welded to the base 1, and a round steel bar 9 is welded to the base 1. The center of the protractor 8 coincides with the center of the round steel bar 9. A spring steel bar 3 is fitted onto the round steel bar 9. The second protruding end 10 is connected to the base 1, and the first protruding end 4 is movably set in the arc groove 267 of the protractor 8. In its natural state, the first protruding end 4 is located at the leftmost section of the arc groove 267. When the reinforcing bar 5 to be bent is inserted into the steel pipe 2, the reinforcing bar 5 abuts against the first protruding end 4 in its natural state. When force is applied to drive the reinforcing bar 5 to be bent, the reinforcing bar 5 drives the first protruding end 4 to rotate in the arc groove 267. The construction personnel can read the bending angle of the reinforcing bar 5 in real time through the first protruding end 4, the protractor 8, and the first scale 6. One person can bend the reinforcing bar 5 and read the bending angle of the reinforcing bar 5 in real time, which effectively improves the bending efficiency.

[0023] In this embodiment, the width of the arc-shaped groove 267 is greater than the diameter of the first protruding end 4, and the first scale 6 is marked according to the bending angle of the reinforcing bar. It is understood that the relationship between the position of the first protruding end 4 and the bending angle of the reinforcing bar can be determined through a limited number of experiments, and the first scale 6 can be marked according to the above-mentioned correlation.

[0024] Understandably, in order to overcome the impact of the springback of the reinforcing bar on the bending accuracy of the reinforcing bar 5, a springback compensation value is set for reinforcing bars of different diameters. During the bending process of the reinforcing bar 5, the reinforcing bar 5 is bent to the angle corresponding to the sum of the preset bending angle and the compensation value. After that, the reinforcing bar 5 is released, and the reinforcing bar 5 springs back under its own elasticity, so that the actual bending angle of the reinforcing bar 5 is approximately equal to the preset bending angle, effectively improving the bending accuracy of the reinforcing bar 5.

[0025] Preferably, red marking paint is applied to the first protruding end 4 to facilitate the relevant construction personnel in better reading the real-time bending angle of the steel bar 5 to be bent. The base 1 is provided with a limiting hole to accommodate the second protruding end 10. The second protruding end 10 is inserted into the limiting hole to form a connection between the second protruding end 10 and the base 1.

[0026] Specifically, during the bending process, the reinforcing bar 5 to be bent is inserted into the steel pipe 2, and part of the reinforcing bar 5 is brought into contact with the first protruding end 4. Force is applied to drive the reinforcing bar 5 to bend, causing the first protruding end 4 to rotate within the arc-shaped groove 267. The construction worker can read the bending angle of the reinforcing bar 5 in real time through the first protruding end 4, the protractor 8, and the first scale 6. One person can bend the reinforcing bar 5 while simultaneously reading its bending angle, effectively improving bending efficiency. Furthermore, during the bending process, the reinforcing bar 5 is bent to the angle corresponding to the sum of the preset bending angle and the compensation value. Afterward, the reinforcing bar 5 is released, and it springs back under its own elasticity, making the actual bending angle of the reinforcing bar 5 approximately equal to the preset bending angle, effectively improving the bending accuracy of the reinforcing bar 5.

[0027] The base 1 is made of Q235B carbon steel. To reduce the overall weight of the rebar bending device, a cavity is provided in the base 1, with a wall thickness of 5mm. The round steel 9 is made of 45# steel with heat treatment and a hardness of HRC28-32. The spring steel 3, the first protruding end 4, and the second protruding end 10 are made of 65Mn alloy spring steel 3 with a surface hardness of HRC45-50. The protractor 8 is made of 304 stainless steel, with the first graduation 6 formed by etching. Welding in the rebar bending device must conform to the continuous fillet weld process. All steel surfaces in the rebar bending device must be hot-dip galvanized to meet the weather resistance requirements for field construction.

[0028] See Figure 3 and Figure 4 As shown, in some embodiments, the system further includes: a drive box mounted on the base 1; the drive box is connected to the base 1 and contains a transmission structure; an input shaft 15 mounted on the drive box; the input shaft 15 is connected to the transmission structure; an output shaft mounted on the drive box; the output shaft is also connected to the transmission structure; and a bending rod 14 connected to the output shaft. When a worker applies force to rotate the input shaft 15, the rotation is transmitted to the output shaft through the transmission structure within the drive box. The rotation of the output shaft causes the bending rod 14 to rotate, and the bending rod 14 abuts against the steel bar 5 to be bent. During rotation, the bending rod 14 causes the steel bar 5 to be bent to bend.

[0029] In this embodiment, the drive box includes an upper box 13 and a lower box 18. The upper box 13 and the lower box 18 are connected together by bolts 19. The lower box 18 is connected to the base 1 by bolts 19, thereby forming a connection between the drive box and the base 1.

[0030] See Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, in some embodiments, the drive housing includes: a worm gear 30, which is connected to the input shaft 15 and is rotatably disposed within the drive housing; the worm gear 30 and the input shaft 15 are integrally formed, preferably, the lead angle of the worm gear 30 is less than or equal to 7°; a worm wheel 28, which meshes with the worm gear 30; and a worm wheel shaft, which is disposed on the worm wheel 28 and connected to the worm wheel shaft by a key or welding method, and is rotatably disposed within the drive housing, integrally formed with the output shaft, and connected to the output shaft, and the output shaft is connected to the bent rod 14 via a coupling 12. During the bending process of the reinforcing bar 5, the worker applies force to rotate the worm gear 30, which in turn drives the meshing worm wheel 28 to rotate. The worm wheel 28 then drives the worm wheel shaft to rotate, thereby rotating the bending rod 14 and achieving the bending of the reinforcing bar 5. On one hand, due to the small lead angle of the worm gear 30, the worm gear 28 structure possesses excellent self-locking performance. During the bending process of the reinforcing bar 5, this self-locking performance effectively resists the springback force of the reinforcing bar 5, preventing springback and effectively improving the bending accuracy and stability, reducing the defect rate, and increasing processing efficiency. On the other hand, the worm gear 30 transmission has a very significant labor-saving effect. There is a large transmission ratio between the worm gear 30 and the worm wheel 30; the worm gear 30 needs to rotate many times for the worm wheel to rotate once. According to the law of conservation of energy, when the rotational speed is significantly reduced, the torque is proportionally amplified. The worker can use a small force, through the worm gear 30, to convert it into a large output torque, thus easily bending the reinforcing bar 5.

[0031] In this embodiment, one end of the worm gear 30 is rotatably mounted on the drive housing via a first bearing support 17, which is connected to the drive housing via bolts 19. The other end of the worm gear 30 is rotatably connected to the drive housing via a second bearing support 29, which is also connected to the drive housing via bolts 19. The other end of the worm gear 30 extends out of the drive housing and is connected to the input shaft 15. One end of the worm gear shaft is rotatably mounted on the drive housing via a third bearing support, which is connected to the drive housing via bolts 19. The other end of the worm gear shaft is rotatably connected to the drive housing via a fourth bearing support 22, which is also connected to the drive housing via bolts 19. The other end of the worm gear shaft extends out of the drive housing and is connected to the output shaft.

[0032] See Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, in some embodiments, a handwheel 16 is also included, with the handwheel 16 provided at the end of the input shaft 15. Construction workers can use the handwheel 16 to rotate the input shaft 15, which increases the lever arm and saves effort for the workers.

[0033] In this embodiment, the handwheel 16 combined with the worm gear 28 and worm 30 creates a force-saving transmission structure, which makes the maximum operating force required for the steel bar 5 to be bent ≤150N, reducing the requirements of the steel bar bending construction device on the construction personnel. Female workers can use the steel bar bending construction device to bend the steel bar 5.

[0034] See Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the device further includes: a limiting member 23, which is movably disposed on the steel pipe 2; and a pushing screw 20, which is screwed onto the steel pipe 2. After the reinforcing bar is inserted into the steel pipe 2, turning the pushing screw 20 will move the limiting member 23 towards the side closer to the base 1. By pushing the screw 20 and the base 1, the reinforcing bar 5 to be bent is locked, preventing it from shifting during the bending process. Furthermore, it can lock reinforcing bars 5 of different diameters, enhancing the practicality of the reinforcing bar bending construction device.

[0035] In this embodiment, the side of the limiting member 23 facing the base 1 is an arc-shaped surface, and the side of the base 1 facing the limiting member 23 is also provided with an arc-shaped adapter groove 26, which makes it easy for the limiting member 23 and the base 1 to adapt to the steel bars 5 of different diameters to be bent, thereby enhancing the stability of clamping.

[0036] See Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, it further includes: a first flexible member 24, which is disposed on the limiting member 23; the first flexible member 24 is a rubber member and is connected to the limiting member 23 by bonding; and a second flexible member 25, which is disposed on one side of the base 1 where the steel pipe 2 is disposed. The second flexible member 25 is also a rubber member and is connected to the base 1 by bonding. Rubber has good wear resistance, and during the locking process, the first flexible member 24 and the second flexible member 25 can deform to adapt to the outer surface of the reinforcing bar 5 to be bent, enhancing the biting force on the reinforcing bar 5 and effectively protecting the reinforcing bar 5 from damage to its outer surface during bending.

[0037] See Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, in some embodiments, it further includes: a guide post 21, which is provided on the limiting member 23; the limiting member 23 is provided with a reinforcing part, which abuts against the push screw 20, and a connecting hole is provided on the reinforcing part, on which the guide post 21 is engaged, thereby realizing the connection between the guide post 21 and the limiting post; the steel pipe 2 is provided with a guide hole, and the guide post 21 is adapted to the guide hole; to limit the movement direction of the limiting member 23. Through the cooperation of the guide post 21 and the guide hole, the movement direction of the limiting member 23 is limited, and the stability of the movement of the limiting member 23 is improved.

[0038] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, in some embodiments, it further includes: a second scale 11, which is provided on the base 1. The position of the end of the reinforcing bar 5 to be bent is determined by the second scale 11, thereby determining the bending position of the reinforcing bar 5. After determining the bending position of the reinforcing bar 5, the reinforcing bar 5 to be bent is locked by the limiting member 23.

[0039] See Figure 5 and Figure 6 As shown, in some embodiments, it further includes: a reinforcing rib 27, which is provided on the base 1. The reinforcing rib 27 is provided inside the base 1 on the side close to the steel pipe 2, so as to effectively enhance the structural strength of the base 1 itself and prevent the base 1 from deforming during the bending of the steel bar 5.

[0040] Example 2 In this embodiment, the parts that are the same as in Embodiment 1 are given the same reference numerals, and the same text descriptions are omitted.

[0041] This embodiment discloses a method for bending reinforcing bars. The method uses a reinforcing bar bending construction device with angle measurement function as described in Embodiment 1. The method mainly includes the following steps: S1. Insert the reinforcing bar 5 to be bent into the steel pipe 2 and make the reinforcing bar 5 to be bent abut against the first protruding end 4; and determine the end position of the reinforcing bar 5 to be bent by the second scale 11. After the end of the reinforcing bar 5 to be bent is in the preset position, lock the bent reinforcing bar by the limiting member 23.

[0042] S2. Determine the compensation value based on the diameter of the reinforcing bar 5 to be bent and the preset bending angle; determine the compensation angle range based on the diameter of the reinforcing bar 5 to be bent, as shown in Table 1. Then determine the compensation angle based on the preset bending angle. The preset bending angle and the compensation angle are positively correlated. The specific compensation angle can be selected within the compensation angle range according to the actual project conditions.

[0043]

[0044] Table 1 S3. Bend the reinforcing bar 5 to the compensated bending angle; the compensated bending angle is equal to the preset bending angle plus the compensation value. S4. Unload the force, and the reinforcing bar 5 will spring back to the preset bending angle under its own elastic force. Hold the pressure for 2 seconds after bending the reinforcing bar 5 to the compensated bending angle, and then slowly unload the force.

[0045] Using the aforementioned rebar bending device and operating method, the rebar to be bent can be bent into shape in one step with an angle error of ≤±2°, eliminating the need for secondary measurement. Furthermore, once skilled in operation, a single operator can achieve a speed of 60 pieces / hour, resulting in high processing efficiency. The rebar bending device is also inexpensive, does not rely on external energy sources, and is well-suited to the rudimentary construction environment on site.

[0046] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A rebar bending construction device with angle measurement function, comprising a base (1) and a steel pipe (2) welded to the side of the base (1), wherein the rebar (5) to be bent extends out of the steel pipe (2), characterized in that, Also includes: A protractor (8) is disposed at the end of the base (1); Spring steel (3), said spring steel (3) is disposed on the base (1); The first protruding end (4) is provided on the spring steel (3), and the portion of the steel bar (5) to be bent abuts against the spring steel (3); Arc groove (7), the arc groove (7) is provided on the protractor (8), and the first protruding end (4) extends out of the arc groove (7); The second protruding end (10) is provided on the spring steel (3) and connected to the base (1). The first scale (6) is set on the protractor (8).

2. The steel bar bending construction device with angle measurement function according to claim 1, characterized in that, Also includes: A drive box, which is mounted on the base (1); Input shaft (15), the input shaft (15) is provided on the drive box; The output shaft is mounted on the drive housing. A bending rod (14) is connected to the output shaft.

3. The steel bar bending construction device with angle measurement function according to claim 2, characterized in that, The drive box includes: A worm gear (30) is connected to the input shaft (15) and is rotatably disposed in the drive box; Worm wheel (28), which meshes with the worm (30); The worm gear shaft is provided with the worm wheel (28), and the worm gear shaft is rotatably disposed in the drive box. The worm gear shaft is connected to the output shaft.

4. A steel bar bending construction device with angle measurement function according to claim 2, characterized in that, Also includes: Handwheel (16) is provided at the end of the input shaft (15).

5. A rebar bending construction device with angle measurement function according to claim 1, characterized in that, Also includes: Limiting member (23), the limiting member (23) is movably disposed on the steel pipe (2); A push screw (20) is screwed onto the steel pipe (2).

6. A rebar bending construction device with angle measurement function according to claim 5, characterized in that, Also includes: The first flexible member (24) is disposed on the limiting member (23); The second flexible member (25) is provided on one side of the base (1) where the steel pipe (2) is located.

7. A rebar bending construction device with angle measurement function according to claim 5, characterized in that, Also includes: Guide post (21), the guide post (21) is provided on the limiting member (23); The steel pipe (2) is provided with a guide hole, and the guide post (21) is adapted to the guide hole to limit the movement direction of the limiting member (23).

8. A steel bar bending construction device with angle measurement function according to claim 1, characterized in that, Also includes: The second scale (11) is provided on the base (1).

9. A steel bar bending construction device with angle measurement function according to claim 1, characterized in that, Also includes: Reinforcing rib (27) is provided on the base (1).

10. A method for bending reinforcing bars, wherein the method uses a reinforcing bar bending construction device with angle measurement function as described in any one of claims 1-9, characterized in that... The operation method mainly includes the following steps: S1. Insert the reinforcing bar to be bent into the steel pipe and make the reinforcing bar to be bent abut against the first protruding end; S2. Determine the compensation value based on the diameter of the steel bar to be bent and the preset bending angle; S3. Bend the steel bar to be bent to a compensating bending angle; S4. Unloading: The steel bar to be bent springs back to the preset bending angle under its own elastic force.

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