Angle-visualized lacing wire secondary bending system and angle-visualized lacing wire secondary bending method

Abstract

The invention discloses an angle visualization secondary bending system and method, and relates to the technical field of building construction.The angle visualization secondary bending system comprises a first steel pipe and a second steel pipe, the first steel pipe is connected with the second steel pipe, the first steel pipe is hollow, at least one end of the first steel pipe is open, and the open end of the first steel pipe is used for sleeving a tie bar and bending the tie bar; the end, away from the first steel pipe, of the second steel pipe is a force application end and used for pushing the first steel pipe. The included angle between the first steel pipe and the second steel pipe is connected with a bubble instrument used for observing the angle, and a fluorescent mark is arranged at the preset angle position of the bubble instrument; the bubble instrument is provided with an induction lamp set, the induction lamp set is fixed to the side wall of the bubble instrument along the side line of the bubble instrument, a pressure sensor is arranged at the force application end of the second steel pipe, the induction end of the pressure sensor faces the outer side of the second steel pipe, and the pressure sensor and the induction lamp set are electrically connected with a controller. The tiepiece bending device has the effects that the tiepiece bending angle accuracy is improved, and the tiepiece fixing quality is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of building construction, and particularly to a visual stirrup bending device. Background Art

[0002] During the construction of shear walls and frame columns, tie bars (hereinafter referred to as stirrups) need to be fixed to the steel bars. Stirrups are a type of steel bar in construction engineering. They are built into the wall and placed among the brick layers to connect the masonry and prevent cracking. According to the specification requirements, the ends of the stirrups need to be bent into 135° hooks in two directions to ensure their fixation with the stressed steel bars distributed horizontally and vertically.

[0003] To reduce the on-site installation difficulty, the stirrups are pre-processed by the factory when producing stirrups. However, to ensure the normal installation of the stirrups, the factory usually only bends one end of the stirrup to 135° and the other end to 90°, making it easier to fix the stirrup during the construction process. During the construction process, the worker still needs to bend the 90° end of the stirrup a second time to make it bent to 135°.

[0004] However, when workers use the visual method, it is easy to cause insufficient or excessive bending of the stirrup angles, affecting the quality of stirrup fixation. Therefore, the present invention provides a new technical solution. Summary of the Invention

[0005] In order to improve the angle accuracy of stirrup bending and ensure the quality of stirrup fixation, this application provides an angle-visualization stirrup secondary bending system and method.

[0006] This application provides an angle-visualization stirrup secondary bending system and method, adopting the following technical solutions:

[0007] An angle-visualization stirrup secondary bending system includes a first steel pipe and a second steel pipe. The first steel pipe and the second steel pipe are connected and form an angle. The inside of the first steel pipe is hollow and at least one end is open. The open end of the first steel pipe is used to sleeved with the stirrup and bend the stirrup. The end of the second steel pipe away from the first steel pipe is a force application end and is used to push the first steel pipe;

[0008] A spirit level for observing the angle is connected at the angle between the first steel pipe and the second steel pipe, and fluorescent marks are set at the preset angle positions of the spirit level;

[0009] The bubble meter is provided with an induction light group, and the induction light group is fixed to the side wall of the bubble meter along the edge line of the bubble meter. The force-applying end of the steel pipe No. 2 is provided with a pressure sensor, and the sensing end of the pressure sensor faces the outside of the steel pipe No. 2. The pressure sensor and the induction light group are electrically connected with a controller, and the controller is configured as follows: if the pressure data fed back by the pressure sensor is greater than F, the induction light group is controlled to turn on; if the pressure data fed back by the pressure sensor continues to be lower than F for 2 seconds, the induction light group is controlled to turn off; wherein F is a preset pressure threshold when pushing the steel pipe No. 2 to bend and tension the reinforcement.

[0010] Optionally, the steel pipe one and the steel pipe two are fixed in a T-shape, both ends of the steel pipe one are open, a connecting frame is provided at the angle between the steel pipe one and the steel pipe two, and the bubble meter is fixed to the connecting frame.

[0011] Optionally, the steel pipe one is rotatably connected to the end of the steel pipe two, and the end of the steel pipe two is provided with a bend buckle for fixing the steel pipe two to the adjacent steel bar, the bend buckle is arc-shaped and symmetrically distributed along the axis of the steel pipe one, and the steel pipe two is fixed with a labor-saving mechanical mechanism for assisting the rotation of the steel pipe one, and the labor-saving mechanical mechanism is located at the angle between the steel pipe one and the steel pipe two, and the labor-saving mechanical mechanism includes a pushing assembly and a shell, the shell is fixed to the steel pipe two and the pushing assembly is located inside the shell, and the bubble meter is installed on the shell.

[0012] Optionally, the pushing assembly includes a push rod, a crank handle, a spring and a base for installing the push rod and the crank handle, the base is fixed to the shell and the two ends are bent toward the same side to form two mounting wing plates, the push rod penetrates the two mounting wing plates, the push rod is columnar and one section of it extends outward with an integrally formed abutment block, a chamber for the crank handle to rotate is formed between the abutment block and the mounting wing plate, a spring is sleeved on the outside of the push rod, one end of the spring is fixed to the push rod, and the other end is fixed to the mounting wing plate, the spring is located on the side of the abutment block away from the chamber, and the end of the push rod facing the steel pipe one is provided with an extended push distance component for extending the pushing distance and pushing the steel pipe one;

[0013] One end of the crank handle is a contact end, and the side wall of the contact end is arc-shaped. The contact end is rotatably connected to the base. The contact end is located in the cavity and the arc surface of the side wall contacts the contact block. The other end of the crank handle is a pulling end and extends out of the cavity. The pulling end of the crank handle is connected to a pulling handle assembly for pulling the crank handle and pushing the push rod out of the base.

[0014] Optionally, the pull handle assembly includes a pull rope connected to the pulling end of the crank handle and a fixed pulley fixed to the outer shell, the pull rope passes around the side wall of the fixed pulley and extends to the outside of the outer shell, one end of the pull rope is connected to a hand handle, one end of the hand handle is rotatably connected to the force-applying end of the steel pipe 2, and the other end extends obliquely and is used to pinch and stretch the pull rope.

[0015] Optionally, the extended pushing distance assembly includes an extension rod, a rack, and a gear set. The end of the rack is connected to the push rod. The gear set includes a first gear and a second gear fixed to the housing by a shaft. The diameter of the first gear is larger than that of the second gear. The first gear meshes with the rack. A transmission chain is sleeved on the tooth structures of the first gear and the second gear. One end of the extension rod is provided with a tooth structure and the corresponding end is always located inside the housing. The second gear meshes with the tooth structure of the extension rod; the extension rod is used to push the first steel pipe and the end of the extension rod away from the second gear penetrates the housing and is rotatably connected to the first steel pipe.

[0016] Optionally, when the crank is pulled to the maximum value, the side wall of the crank abuts against the side wall of the base, the spring is compressed to the shortest length, and at this time the bending angle between the first steel pipe and the second steel pipe is fixed at a preset maximum angle.

[0017] An angle visualization method for secondary bending of tension bars includes:

[0018] S1. Installation and positioning, which includes:

[0019] Sheath the first steel pipe on the tension bar;

[0020] S2. Bend the tension bar, which includes:

[0021] Grasp the force application end of the second steel pipe and push it, and observe whether the fluorescent marks of the bubble instrument are aligned;

[0022] Or fix the bending buckle to the adjacent steel bar perpendicular to the tension bar, hold and pinch the distance between the hand pinch handle and the second steel pipe, observe whether the extension rod continues to push and then stops moving, and observe whether the fluorescent marks of the bubble instrument are aligned;

[0023] S3. Dismantling and resetting, which includes:

[0024] Release the hand pinch handle to reset the extension rod;

[0025] Separate the first steel pipe from the tension bar.

[0026] In summary, the present application includes the following beneficial technical effects: Through the setting of the bubble instrument, it is more convenient for workers to observe whether the bent tension bar has reached the required angle. By setting the induction lamp group and fluorescent marks, it is convenient to observe the angle even during night construction, so that the angle of the bent tension bar is more accurate and the quality and stability of the tension bar fixation are guaranteed. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of Embodiment 1 in the present application;

[0028] Figure 2 is the internal structural schematic diagram of Embodiment 2 in the present application;

[0029] Figure 3 It is a schematic diagram of the overall structure of the second embodiment in this application;

[0030] Figure 4 It is a flowchart of the method in this application.

[0031] Explanation of reference numerals: 1, the first steel pipe; 2, the second steel pipe; 3, the bubble level; 4, the tension bar; 5, the steel bar; 6, the bending buckle; 7, the labor-saving mechanical mechanism; 71, the housing; 72, the pushing component; 721, the push rod; 722, the crank; 723, the spring; 724, the base; 725, the mounting wing plate; 726, the abutting block; 73, the extended push distance component; 731, the extension rod; 732, the rack; 733, the first gear; 734, the second gear; 735, the transmission chain; 74, the pulling handle component; 741, the pulling rope; 742, the fixed pulley; 743, the hand-squeezing handle. Detailed implementation manners

[0032] The following further elaborates on this application in conjunction with the attached Figures 1-4 drawings for a more detailed description.

[0033] The embodiment of this application discloses an angle visualization tension bar secondary bending system and method.

[0034] Referring to Figure 1 , the angle visualization tension bar 4 secondary bending system includes the first steel pipe 1 and the second steel pipe 2. The first steel pipe 1 and the second steel pipe 2 can be welded and fixed at a right angle. The first steel pipe 1 is hollow inside and has at least one open end. The open end of the first steel pipe 1 is sleeved on one end of the 90° tension bar 4 and is used to bend the tension bar 4. The end of the second steel pipe 2 away from the first steel pipe 1 is the force application end, which is for the worker to push by hand to push the first steel pipe 1 and further bend the tension bar 4. Setting the first steel pipe 1 and the second steel pipe 2 can assist in bending the tension bar 4 with a lever, making it more labor-saving and convenient to bend the tension bar 4.

[0035] A bubble level 3 for observing the angle is installed at the included angle between the first steel pipe 1 and the second steel pipe 2. It can be that a connecting frame for installing the bubble level 3 is provided at the included angle between the first steel pipe 1 and the second steel pipe 2, and the bubble level 3 is fixed to the connecting frame; a fluorescent mark is set at the preset angle position of the bubble level 3, where the preset angle is 135°. Setting the fluorescent mark is more convenient for the worker to observe and is more conducive to observing at night.

[0036] Furthermore, the first steel pipe 1 can be set with both ends open, and the first steel pipe 1 and the second steel pipe 2 are welded in a T shape, so that the worker can easily put on the tension bar 4 after picking up this device without adjusting the direction for use, which is more convenient and faster.

[0037] The bubble level 3 is provided with an induction lamp group. The setting of the induction lamp group makes it more convenient to use at night and observe the angle. The induction lamp group is fixed along the side line of the bubble level 3 on the side wall of the bubble level 3. The induction lamp group can be powered by charging or by battery, and can be adhered or snapped to the side wall of the bubble level 3. The force application end of the second steel pipe 2 is provided with a pressure sensor (which can be a thin film type). The pressure sensor can be embedded outside the holding area at the force application end of the second steel pipe 2, and the sensing end is exposed on the surface of the steel pipe. The pressure sensor and the induction lamp group are electrically connected to a controller. The controller can be located on the side wall of the second steel pipe 2. The second steel pipe 2 is hollow or has a groove on the pipe body for the controller to be embedded and installed. At the same time, the controller can be equipped with a corresponding switch button for manually turning on and off the induction lamp group.

[0038] The controller is configured as follows: If the pressure data fed back by the pressure sensor is greater than F, then control the induction lamp group to turn on; where F is a preset pressure threshold when pushing the second steel pipe 2 to bend the tension bar 4. Example: When a worker is about to push the second steel pipe 2 to bend the tension bar 4, they will probably apply a force of 10 N and then gradually increase the applied force. Then F can be set to 10 N to reduce the possibility of misjudgment; when the pressure data continuously remains lower than F for 2 seconds, automatically turn off the induction lamp group.

[0039] According to the above settings, through the setting of the bubble level 3, it is more convenient for workers to observe. By setting the induction lamp group and fluorescent markings, even during night construction, it is convenient to observe whether the angle reaches 135°, so that the angle of the bent tension bar 4 is more accurate and the quality and stability of the fixation of the tension bar 4 are ensured.

[0040] In another embodiment (Embodiment 2) of the present application:

[0041] Refer to Figure 2 and Figure 3 , the first steel pipe 1 is hinged to the second steel pipe 2. An articulated seat is provided at the intersection of the end of the first steel pipe 1 and the end of the second steel pipe 2. The two movable parts of the articulated seat are respectively fixed to the second steel pipe 2 and the first steel pipe 1 and are located within the included angle formed by the two. The second steel pipe 2 and the first steel pipe 1 can rotate relative to each other, so that when the first steel pipe 1 sleeved with the tension bar 4, the second steel pipe 2 will not hinder the insertion of the tension bar 4. The end of the second steel pipe 2 is provided with a bent buckle 6 for fixing the second steel pipe 2 to the adjacent steel bar 5. The bent buckle 6 is arc-shaped, can be C-shaped, and the arc fits the side wall of the steel bar 5. The bent buckles 6 are symmetrically distributed along the axis of the second steel pipe 2, and the distance between the two bent buckles 6 is greater than the diameter of the tension bar 4, so as to facilitate the first steel pipe 1 to be sleeved on the tension bar 4 and will not touch or even hinder the tension bar 4.

[0042] Steel pipe 2 is fixed with a labor-saving mechanical mechanism 7 for pushing steel pipe 1 to rotate. The labor-saving mechanical mechanism 7 is located at the angle between steel pipe 1 and steel pipe 2. The labor-saving mechanical mechanism 7 includes a pushing component 72 and a shell 71. The pushing component 72 is installed inside the shell 71. The shell 71 is a rounded polygon when viewed from the side and its thickness is less than the diameter of steel pipe 2. The bubble meter 3 can be installed on the shell 71, close to the angle between steel pipe 1 and steel pipe 2.

[0043] Through the above configuration, the labor-saving mechanical mechanism 7 can save more labor when pushing the steel pipe 1 or even bending the reinforcing bar 4, and assist workers to bend the reinforcing bar 4 more easily. It should be noted that this embodiment is preferably used to bend thinner reinforcing bars, at least thinner than the reinforcing bars of the previous embodiment, so as to reduce the situation where the hands are too tired due to excessive bending.

[0044] The pushing assembly 72 includes a push rod 721, a crank handle 722, a spring 723 and a base 724 for installing the push rod 721 and the crank handle 722. The base 724 is fixed to the inner wall of the shell 71 by bolts and nuts and the two ends parallel to the length direction of the steel pipe 22 are bent toward the same side to form two mounting wing plates 725. The push rod 721 is arranged parallel to the length direction of the steel pipe 22 and the two ends respectively penetrate the two mounting wing plates 725. The push rod 721 is columnar and one section of it extends outward to form an integrally formed abutment block 726. The abutment block 726 extends in a direction parallel to the mounting wing plate 725. A chamber for the crank handle 722 to rotate is formed between the abutment block 726 and the mounting wing plate 725. The part is rotatably connected to the base 724 and is located in the chamber and can push the abutment block 726 and the push rod 721 to move. A spring 723 is sleeved on the outer side of the push rod 721. One end of the spring 723 is fixed to the push rod 721, and the other end is fixed to the mounting wing plate 725, so as to compress the spring 723 while pushing the push rod 721. When the push rod 721 is not pushed, the spring 723 is in a natural state; the push rod 721 is provided with an extended push distance component 73 toward the end of the steel pipe 1 for lengthening the pushing distance and pushing the steel pipe 1. The extended push distance component 73 penetrates the outer shell 71 and is connected to the steel pipe 22, and can be hinged, thereby compensating for the problem that the push rod 721 may not be able to extend out of the outer shell 71 or the pushing distance is insufficient to push the steel pipe 1.

[0045] One end of the crank 722 is a contact end, and the side wall of the contact end is arc-shaped, and the other end extends obliquely from the base 724. The arc surface of the side wall of the contact end contacts the abutment block 726, so that when the crank 722 swings, the contact end can push the abutment block 726 and the push rod 721 to move sideways, and the side wall of the abutment block 726 can also be set as an arc surface, so as to push the push rod 721 to move more smoothly. One end of the crank 722 extending from the base 724 is a pulling end, and a ring can be fixed to the pulling end, and the ring is connected to the pull handle assembly 74 that pulls the crank 722 to swing.

[0046] With the above settings, the rocking handle 722 can be pulled by the pulling handle assembly 74, pushing the push rod 721 to move outward. While the push rod 721 moves outward, the spring 723 is compressed. When the force applied to the rocking handle 722 stops, the spring 723 will rebound, pushing the push rod 721 to reset, and the rocking handle 722 will automatically swing back to the initial position under the action of the force of the spring 723.

[0047] Refer to Figure 2 , the pulling handle assembly 74 includes a pulling rope 741 connected to the pulling end of the rocking handle 722 and a fixed pulley 742 fixed to the outer shell 71. The pulling rope 741 can be connected to the pulling end of the rocking handle 722 by bundling. The pulling rope 741 should be a metal rope or a material that is not easily broken, so as to be more suitable for the working scenario. The pulley seat of the fixed pulley 742 is fixed to the outer shell 71 or the rotating shaft is fixed to the outer shell 71, and the fixed pulley 742 is rotatably connected to the rotating shaft. The fixed pulley 742 is located below the rocking handle 722 and the pulling rope 741 bypasses the side wall of the fixed pulley 742 downward and then extends upward, and extends out through a through hole pre-opened in the outer shell 71. One end of the pulling rope 741 is connected with a hand-squeezing handle 743. One end of the hand-squeezing handle 743 is hinged to the force-applying end of the second steel pipe 2 through a hinge seat, and the other end extends obliquely, and a ring for bundling the pulling rope 741 is fixed at the end.

[0048] With the above settings, the worker can squeeze the hand-squeezing handle 743 towards the direction of the second steel pipe 2 to drive the pulling rope 741 to pull upward, and then change the pulling direction of the pulling rope 741 through the fixed pulley 742 to pull the rocking handle 722 downward, and further push the push rod 721, so that the end of the push rod 721 gradually extends out of the base 724, pushing the extended push distance assembly 73 at the end, so as to push the first steel pipe 1 to rotate and bend the tension bar 4, and achieve the purpose of saving effort.

[0049] Refer to Figure 2 , the extended push distance assembly 73 includes an extension rod 731, a rack 732 and a gear set. The end of the rack 732 is fixed to the push rod 721, which can be connected by bolts and nuts. The gear set includes a first gear 733 and a second gear 734 fixed to the outer shell 71 through a shaft. The diameter of the first gear 733 is larger than the diameter of the second gear 734. Thus, when the first gear 733 is pushed to rotate, the second gear 734 can rotate more turns; a transmission chain 735 is sleeved on the tooth structures of the first gear 733 and the second gear 734. The transmission chain 735 meshes with the tooth structures of the first gear 733 and the second gear 734 at the same time. When the first gear 733 rotates, it drives the second gear 734 to rotate in the same direction through the transmission chain 735. One end of the extension rod 731 is provided with a tooth structure and the corresponding end is always located inside the outer shell 71. The second gear 734 meshes with the tooth structure of the extension rod 731, and the second gear 734 drives the extension rod 731 to linearly move along the axis direction of the second steel pipe 2.

[0050] With the above settings, when Gear 1 733 drives Gear 2 734 to rotate, Gear 2 734 can drive the engaged extension rod 731 to extend outward. And due to the cooperation between Gear 1 733 and Gear 2 734, the push rod 721 only needs to extend a short distance. While pushing Gear 1 733 to rotate, it drives Gear 2 734 to rotate more turns, and then drives the extension rod 731 to extend a greater distance. The extension rod 731 is used to push the first steel pipe 1 to rotate. The end of the extension rod 731 that pushes the first steel pipe 1 can be set to a round head to reduce wear. The end of the extension rod 731 away from Gear 2 734 penetrates the housing 71 and is rotatably connected to the first steel pipe 1.

[0051] To achieve the above settings, the drive chain 735 and the push rod 721 are arranged parallel to each other along the thickness direction of Gear 1 733, that is, each of them occupies half of the thickness range of Gear 1 733. Then, the push rod 721 and the drive chain 735 can be meshed simultaneously; the tooth structures of the drive chain 735 and the extension rod 731 are arranged parallel to each other along the thickness direction of Gear 2 734, that is, each of them occupies half of the thickness range of Gear 2 734. Then, the tooth structure of the extension rod 731 and the drive chain 735 can be meshed simultaneously.

[0052] With the above settings, only need to pinch the hand grip 743, thus pulling the pull rope 741. The pull rope 741 changes the direction of the applied force through the fixed pulley 742 and then pulls the crank 722 downward. While the crank 722 rotates, it pushes the push rod 721 to move, and then pushes Gear 1 733 to drive Gear 2 734. The rotation of Gear 2 734 drives the extension rod 731 to extend, and finally pushes the first steel pipe 1 to rotate, achieving the function of assisting in bending the tension bar 4, and can play a certain role in saving effort.

[0053] Refer to Figure 2 , when the crank 722 is pulled to the maximum value, that is, when the side wall of the crank 722 abuts against the side wall of the base 724, the crank 722 cannot be pulled further. And at this time, the push rod 721 is pushed to the maximum distance or the spring 723 is compressed to the shortest distance. Further, Gear 1 733 and Gear 2 734 stop rotating, and the extension rod 731 is pushed to the maximum distance. Then the bending angle between the first steel pipe 1 and the second steel pipe 2 is fixed at a preset maximum angle, which should be 135°. It can be calculated by relevant staff. For example: when the extension rod 731 extends 10 CM, the bending angle between the first steel pipe 1 and the second steel pipe 2 is 135°. Then, reverse-push the maximum distance that the push rod 721 is pushed at this time, or the shortest distance that the spring 723 is compressed. Further, reverse-push when the crank 722 should be pulled to the lowest position, and finally make the design. Further, a limit block can also be provided inside the housing 71. When the extension rod 731 extends 10 CM, it abuts against the limit block and is forced to stop pushing.

[0054] The embodiment of the present application also discloses a method for secondary bending of the angle-visualized tension bar 4.

[0055] Reference Figure 4 , the secondary bending method of the angle visualization stirrup 4 includes the following steps:

[0056] S1. Installation and positioning, which includes:

[0057] After the stirrup 4 is initially fixed outside the steel bar 5, the open end of the steel pipe 1 is sleeved outside the stirrup 4; this step is divided into two cases. If an articulated device (i.e., Embodiment 2) is used, the bending buckle 6 needs to be fixed adjacent to the steel bar 5 first

[0058] S2. Bending the stirrup 4, which includes:

[0059] Grip the force application end of the steel pipe 2 and push it, and observe whether the fluorescent marks of the bubble instrument 3 are aligned during the pushing process. If they are aligned, stop;

[0060] Or fix the bending buckle 6 and the steel bar 5 adjacent to and perpendicular to the stirrup 4, grip the steel pipe 2 to apply force and pinch the distance between the steel pipe 2 and the end of the hand pinch handle 743. The pull rope 741 drives the rocker 722 to move downward, the rocker 722 pushes the push rod 721 to move outward, and at the same time drives the rotation of the first gear 733 and the second gear 734, driving the engaged extension rod 731 to move toward the outside of the housing 71. Observe whether the extension rod 731 continues to push or observe whether the hand pinch handle 743 can still be pinched tightly, and at the same time observe whether the fluorescent marks of the bubble instrument 3 are aligned. If they are aligned, stop bending the stirrup 4;

[0061] S3. Dismantling and resetting, which includes:

[0062] Release the hand pinch handle 743, the spring 723 surrounding the push rod 721 returns to its original state, and at the same time drives the extension rod 731, the push rod 721 and the rocker 722 to reset, and the hand pinch handle 743 driven by the pull rope 741 resets;

[0063] After confirming that the extension rod 731 retracts into the housing 71 and the bubble instrument 3 shows the initial angle, then separate the steel pipe 1 from the stirrup 4, that is, move the sleeved steel pipe 1 in the opposite direction to the bent direction of the stirrup 4, and at the same time separate the bending buckle 6 and the steel bar 5 together to complete the dismantling and resetting.

[0064] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. An angle visualization and secondary bending system for tendon-stretching, characterized in that: It includes steel pipe one (1) and steel pipe two (2). The steel pipe one (1) and the steel pipe two (2) are connected and form an angle. The inside of the steel pipe one (1) is hollow and at least one end is open. The open end of the steel pipe one (1) is used to sleeved with a tension bar (4) and bend the tension bar (4). The end of the steel pipe two (2) far from the steel pipe one (1) is a force - applying end and is used to push the steel pipe one (1). At the angle between the steel pipe one (1) and the steel pipe two (2), a spirit level (3) for observing the angle is connected. Fluorescent marks are set at the preset angle positions of the spirit level (3). The spirit level (3) is provided with an induction lamp group. The induction lamp group is fixed along the side wall of the spirit level (3) on the side line of the spirit level (3). A pressure sensor is arranged at the force - applying end of the steel pipe two (2). The sensing end of the pressure sensor faces the outside of the steel pipe two (2). The pressure sensor and the induction lamp group are electrically connected to a controller. The controller is configured as follows: if the pressure data feedback by the pressure sensor is greater than F, control the induction lamp group to turn on; if the pressure data feedback by the pressure sensor continuously remains lower than F for 2 seconds, then control the induction lamp group to turn off; where F is the pressure threshold for presetting to push the steel pipe two (2) to bend the tension bar (4).

2. The angle visualization rib secondary bending system according to claim 1, wherein: The steel pipe one (1) and the steel pipe two (2) are fixed in a T - shape. Both ends of the steel pipe one (1) are open. A connecting frame is arranged at the angle between the steel pipe one (1) and the steel pipe two (2). The spirit level (3) is fixed to the connecting frame.

3. The angle visualization rib-stiffening secondary bending system according to claim 1, wherein: The steel pipe one (1) is rotatably connected to the end of the steel pipe two (2). A bending buckle (6) for fixing the steel pipe two (2) to the adjacent steel bar (5) is arranged at the end of the steel pipe two (2). The bending buckle (6) is arc - shaped and symmetrically distributed along the axis of the steel pipe one (1). A labor - saving mechanical mechanism (7) for assisting in pushing the steel pipe one (1) to rotate is fixed to the steel pipe two (2). The labor - saving mechanical mechanism (7) is located at the angle between the steel pipe one (1) and the steel pipe two (2). The labor - saving mechanical mechanism (7) includes a pushing component (72) and a housing (71). The housing (71) is fixed to the steel pipe two (2) and the pushing component (72) is located inside the housing (71). The spirit level (3) is installed on the housing (71).

4. The angle visualization rib-stiffener secondary bending system according to claim 3, characterized in that: The pushing assembly (72) comprises a push rod (721), a rocker (722), a spring (723) and a base (724) for mounting the push rod (721) and the rocker (722); the base (724) is fixed to the housing (71) and has two ends bent toward the same side to form two mounting wing plates (725); the push rod (721) penetrates the two mounting wing plates (725); the push rod (721) is columnar and one section of the push rod (721) extends outward with an integrally formed abutment block (726); the abutment block A chamber for the crank (722) to rotate is formed between the block (726) and the mounting wing plate (725); a spring (723) is sleeved on the outside of the push rod (721); one end of the spring (723) is fixed to the push rod (721), and the other end is fixed to the mounting wing plate (725); the spring (723) is located on the side of the abutment block (726) away from the chamber; and an extension push distance component (73) for extending the push distance and pushing the steel pipe (1) is provided at the end of the push rod (721) facing the steel pipe (1); One end of the crank (722) is a contact end, and the side wall of the contact end is arc-shaped. The contact end is rotatably connected to the base (724). The contact end is located in the chamber and the arc surface of the side wall contacts the contact block (726). The other end of the crank (722) is a pulling end and extends out of the chamber. The pulling end of the crank (722) is connected to a pulling handle assembly (74) for pulling the crank (722) and pushing the push rod (721) to extend out of the base (724).

5. The angle visualization rib (4) secondary bending system according to claim 4, characterized in that: The pull handle assembly (74) includes a pull rope (741) connected to the pulling end of the crank handle (722) and a fixed pulley (742) fixed to the outer shell (71), the pull rope (741) passes around the side wall of the fixed pulley (742) and then extends to the outside of the outer shell (71), one end of the pull rope (741) is connected to a hand handle (743), one end of the hand handle (743) is rotatably connected to the force-applying end of the second steel pipe (2), and the other end extends obliquely and is used to pinch and stretch the pull rope (741).

6. The angle visualization rib secondary bending system according to claim 5, characterized in that: The extended push distance assembly (73) comprises an extension rod (731), a rack (732) and a gear set, wherein the end of the rack (732) is connected to the push rod (721), and the gear set comprises a gear 1 (733) and a gear 2 (734) fixed to the housing (71) via an axis, the diameter of the gear 1 (733) is larger than that of the gear 2 (734), the gear 1 (733) is meshed with the rack (732), the tooth structures of the gear 1 (733) and the gear 2 (734) are sleeved with a transmission chain (735), one end of the extension rod (731) is provided with a tooth structure and the corresponding end is always located in the housing (71), and the gear 2 (734) is meshed with the tooth structure of the extension rod (731); the extension rod (731) is used to push the steel pipe 1 (1), and the end of the extension rod (731) away from the gear 2 (734) penetrates the housing (71) and is rotatably connected to the steel pipe 1 (1).

7. The angle visualization and rib secondary bending system according to claim 6, wherein: When the crank handle (722) is pulled to the maximum value, the side wall of the crank handle (722) abuts against the side wall of the base (724), the spring (723) is compressed to the shortest length, and at this time, the bending angle between the first steel pipe (1) and the second steel pipe (2) is fixed at a preset maximum angle.

8. A method for secondary bending of an angle-visualized tension bar, characterized in that: Applying to the angle visualization stirrup secondary bending system as described in any one of claims 1-7 to perform the work of bending the stirrup (4), including the following steps: S1. Installation and positioning, which includes: Sheathing the first steel pipe (1) on the stirrup (4); S2. Bending the stirrup (4), which includes: Grasping the force application end of the second steel pipe (2) and pushing, and observing whether the fluorescent marks of the bubble instrument (3) are aligned; Or fixing the bending buckle (6) to the reinforcing bar (5) adjacent and perpendicular to the stirrup (4), grasping and squeezing the distance between the hand pinch handle (743) and the second steel pipe (2), observing whether the extension rod (731) continues to push and then stops moving, and observing whether the fluorescent marks of the bubble instrument (3) are aligned; S3. Dismantling and resetting, which includes: Releasing the hand pinch handle (743) to reset the extension rod (731); Separating the first steel pipe (1) from the stirrup (4).

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