A device for forming a steel bar hook of a cast-in-place shear wall on site and a construction method thereof

Abstract

The present invention relates to the technical field of steel bar hooks, and specifically includes a bearing column, a rotating rod, a clamping docking seat and a length adjustment device. Its construction method includes the steps of supporting in place, fixing the steel bar, starting bending and removing the equipment. The beneficial effects are: the steel bar bending device designed by the present invention can be clamped according to the different diameters of the steel bars, and can freely measure and change the position on the steel bar that needs to be bent through the scale bar on the rotating rod, and can bend the steel bar at any angle. At the same time, the bending using the lever principle is more labor-saving. Compared with traditional manual steel bar bending tools, it has better adjustment accuracy and flexibility of use, and is also more convenient to store and carry.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar hooks, in particular to a device for on-site forming of steel bar hooks for cast-in-place shear walls and a construction method thereof. Background Art

[0002] In the design of cast-in-place shear wall structure, a large number of wall structural tie bars - steel hooks are used. They are arranged in the shape of plum blossoms in the wall. They are important stress-bearing steel bars, indispensable and in huge quantities. During normal construction, steel bar processing plants process steel hooks, mainly processing the ends of steel bars into 90° hooks or 135° hooks. However, since the tools used to process steel hooks are mostly simple wrenches, it is difficult to ensure the accuracy of the hook angle, and the length of the straight section of the hook is only controlled according to the close proximity to the wall bars. This makes it difficult to control the quality of the steel hook forming, and the subsequent on-site rectification is difficult.

[0003] If a new type of steel bar hook forming equipment is invented that can more conveniently realize precise processing of the bending angle of the steel bar hook and precise control of the length of the straight section of the hook, such problems can be effectively solved. To this end, we provide a device for on-site forming of cast-in-place shear wall steel bar hooks and a construction method thereof. Summary of the invention

[0004] The object of the present invention is to provide a device for on-site forming of a steel bar hook of a cast-in-place shear wall and a construction method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a device for on-site forming of a steel bar hook of a cast-in-place shear wall, the device comprising:

[0006] A bearing column, wherein the bearing column is fixedly supported on the ground by a supporting device capable of adjusting the supporting height, and the bearing column is used to place the steel bars and align the places where the steel bars need to be bent;

[0007] A rotating rod, wherein a scale bar for marking the distance is arranged on the rotating rod, and a rotating arm is slidably mounted on the rotating rod, wherein the rotating arm is fixed to the rotating rod by a fifth positioning screw, and the end of the rotating arm is rotatably mounted to the bearing column;

[0008] A clamping docking seat, wherein a docking groove for clamping a steel bar is provided on the left side of the clamping docking seat, and the clamping docking seat is fixed to a positioning connection sleeve by bolts, the positioning connection sleeve is slidably installed with the rotating rod, and the positioning connection sleeve is fixed to the rotating rod by a sixth positioning screw button;

[0009] A length adjustment device, wherein the length adjustment device can adjust its own length by telescoping, and an inclination observation device for detecting the bending angle of the steel bar is provided on the length adjustment device, the bottom of the length adjustment device is fixed to the upper end of the rotating rod, and the top of the length adjustment device is fixed to the handle.

[0010] Preferably, the supporting device includes a polygonal sleeve fixedly mounted on the supporting column via a first positioning screw, and a supporting column is fixedly mounted on the bottom of the polygonal sleeve, a sliding sleeve is slidably sleeved on the supporting column and fixed via a second positioning screw, and at least a pair of supporting arms for support are fixedly mounted on the bottom of the sliding sleeve.

[0011] Preferably, the handle is a flat plate or a flat tube, and a non-slip rubber sleeve is sleeved and installed on the handle.

[0012] Preferably, a limiting device is provided on the positioning connecting sleeve, and a rotating frame is rotatably installed on the limiting device, and the rotating frame and the positioning connecting sleeve are connected by a reset spring, a limiting plate is hingedly installed on the rotating frame, and the end of the limiting plate is clamped with the clamping docking seat and used to compress the steel bars.

[0013] Preferably, an indicating positioning device is provided on the rotating rod, and the indicating positioning device includes an auxiliary sliding seat slidably sleeved on the rotating rod and fixed to the rotating rod through a third positioning screw, and a positioning piece in contact with the steel bar is integrally formed on the upper end of the auxiliary sliding seat.

[0014] Preferably, the length adjustment device is composed of a bottom sleeve rod and a top rod slidingly connected, and the bottom sleeve rod and the top rod are fixed by a fourth positioning screw, the bottom sleeve rod is fixed to the upper end of the rotating rod, and the inclination observation device is arranged at the upper end of the bottom sleeve rod, and the top of the top rod is fixed to the handle by bolts.

[0015] Preferably, the inclination observation device comprises a circular dial fixedly mounted on the upper end of the bottom sleeve rod, and a vertical rotating pointer which can be rotatably mounted at the center of the circular dial and can be directed vertically downward under the action of gravity.

[0016] Preferably, the bottom sleeve rod and the rotating rod are fixedly connected by a positioning connection device, and the positioning connection device includes a connecting seat, and the bottom of the connecting seat is fixed to the upper end of the rotating rod by bolts, and at least four docking holes arranged in a fan shape and used for inserting the bottom of the bottom sleeve rod are arranged at equal angles on the connecting seat, and a positioning rod for inserting and fixing the bottom of the bottom sleeve rod is connected to the connecting seat through a contraction spring.

[0017] A construction method for a device for on-site forming of a steel bar hook for a cast-in-place shear wall comprises the following steps:

[0018] S1. Support in place: First, move the support device to the corresponding working point according to the location of the steel bar, and then adjust the upper end of the bearing column to be able to contact the bottom of the steel bar through the support device;

[0019] S2. Steel bar fixing: first, replace the clamping docking seat of the corresponding size according to the diameter of the steel bar, and fix the rotating arm on the rotating rod in advance through the fifth positioning screw, then rotate the rotating rod to a position parallel to the steel bar, and then according to the straight rod length required to be reserved at the end of the steel bar and the length of the curved section required to be reserved at the bending point of the steel bar, push the rotating rod forward and backward and use the scale bar on the rotating rod to measure the position of the bearing point and the clamping point on the steel bar, then adjust the position of the support device again, align the bearing point with the bearing column to the support position, and then slide the positioning connection sleeve forward and backward so that the docking groove is clamped on the clamping point on the steel bar, and then fix the positioning connection sleeve to the rotating rod through the sixth positioning screw;

[0020] S3. Start bending: When the steel bar is fixed, the current inclination data of the length adjustment device is observed through the inclination observation device, and the final required inclination angle position of the length adjustment device is calculated according to the required bending angle of the steel bar. Then, the handle is manually pushed to move, so that the rotating rod can rotate with the central axis of the bearing column as the rotation center, thereby driving the steel bar to bend. During the rotation of the rotating rod, the inclination data change on the inclination observation device is always observed. When the inclination observation device observes that the length adjustment device has rotated to the required rotation angle position, the bending is stopped, and the bending work of the steel bar is completed at this time;

[0021] S4. Equipment dismantling: When the steel bar is bent, it is only necessary to manually remove the end of the steel bar from the other side of the docking groove, and then adjust the height of the bearing column through the supporting device to make the bearing column break away from the supporting state of the steel bar, and the equipment can be dismantled. The dismantled equipment can be moved to the next steel bar position that needs to be bent for the next round of operations.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the steel bar bending device designed by the present invention can perform corresponding clamping according to different diameters of the steel bars, and can freely measure and change the position on the steel bar that needs to be bent through the scale bar located on the rotating rod, and can bend the steel bar at any angle. At the same time, the bending using the lever principle is more labor-saving. Compared with traditional manual steel bar bending tools, it has better adjustment accuracy and flexibility of use, and is also more convenient to store and carry, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0024] Figure 2 It is a structural side view of Embodiment 1 of the present invention;

[0025] Figure 3 It is a schematic diagram of the installation of the rotating rod and the bearing column in Example 1 of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of Example 2 of the present invention.

[0027] In the figure: 1, support device; 101, first positioning screw; 102, polygonal sleeve; 103, support column; 104, second positioning screw; 105, sliding sleeve; 106, support arm; 2, bearing column; 3, steel bar; 4, rotating rod; 5, limit device; 501, limit plate; 502, rotating frame; 503, reset spring; 6, indicating positioning device; 601, positioning sheet; 602, third positioning screw; 603, auxiliary sliding seat; 7, positioning connection device; 7 01. Positioning rod; 702. Contraction spring; 703. Connecting seat; 704. Docking hole; 8. Length adjustment device; 801. Bottom sleeve rod; 802. Fourth positioning screw button; 803. Top rod; 9. Inclination observation device; 901. Circular dial; 902. Plumb rotating pointer; 10. Handle; 11. Scale bar; 12. Clamping docking seat; 13. Positioning connecting sleeve; 14. Fifth positioning screw button; 15. Sixth positioning screw button; 16. Rotating arm; 17. Docking groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the technical solutions in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1

[0030] See also Figures 1 to 3 , a device for forming a steel bar hook of a cast-in-place shear wall on site, the device comprising:

[0031] Bearing column 2, see Figure 1 to Figure 2The bearing column 2 is fixedly supported on the ground by a supporting device 1 whose supporting height can be adjusted, and the bearing column 2 is used to place the steel bar 3 and align the steel bar 3 where it needs to be bent. The supporting device 1 includes a polygonal sleeve 102 fixedly installed with the bearing column 2 through a first positioning screw button 101, and a supporting column 103 is fixedly installed at the bottom of the polygonal sleeve 102, a sliding sleeve 105 is slidably sleeved on the supporting column 103 and fixed by a second positioning screw button 104, and at least one pair of supporting arms 106 for support are fixedly installed at the bottom of the sliding sleeve 105, and the height of the bearing column 2 can be adjusted by moving the sliding sleeve 105 up and down along the supporting column 103 and re-fixing the position of the sliding sleeve 105 by using the second positioning screw button 104;

[0032] Turn lever 4, see Figure 3 , a scale bar 11 for marking the distance is provided on the rotating rod 4, and a rotating arm 16 is slidably mounted on the rotating rod 4, the rotating arm 16 is fixed to the rotating rod 4 by a fifth positioning screw 14, and the end of the rotating arm 16 is rotatably mounted on the bearing column 2;

[0033] Clamping docking seat 12, please refer to Figure 3 The left side of the clamping docking seat 12 is provided with a docking groove 17 for clamping the steel bar 3. The clamping docking seat 12 has different models, so that the docking groove 17 in each model of the clamping docking seat 12 can correspond to a size of steel bar 3, which is convenient for clamping the steel bar 3 of the corresponding size. The clamping docking seat 12 is fixed to the positioning connection sleeve 13 by bolts, the positioning connection sleeve 13 is slidably installed with the rotating rod 4, and the positioning connection sleeve 13 is fixed to the rotating rod 4 by the sixth positioning screw button 15. A limiting device 5 is provided on the positioning connection sleeve 13, and a rotating frame 502 is rotatably installed on the limiting device 5, and a reset spring is provided between the rotating frame 502 and the positioning connection sleeve 13. The limit plate 501 is hingedly installed on the rotating frame 502, and the end of the limit plate 501 is clamped with the clamping docking seat 12 and used to compress the steel bar 3. The rotating frame 502 is rotated downward and the limit plate 501 is rotated inward to a position corresponding to the clamping position on the clamping docking seat 12. The limit plate 501 can be automatically rotated to the clamping position with the clamping docking seat 12 driven by the reset spring 503 and clamped, thereby effectively preventing the steel bar 3 from escaping from the docking groove 17. When it is necessary to remove the steel bar 3 from the docking groove 17 again, it is only necessary to reversely operate the limit device 5 to make the limit device escaping from the matching state with the clamping docking seat 12.

[0034] Length adjustment device 8, see Figure 1 and Figure 2The length adjustment device 8 is composed of a bottom sleeve rod 801 and a top rod 803 which are slidably sleeved, and the bottom sleeve rod 801 and the top rod 803 are fixed by a fourth positioning screw 802, so that the length of the length adjustment device 8 itself can be adjusted by changing the sleeve position of the bottom sleeve rod 801 and the top rod 803, and reusing the fourth positioning screw 802 to fix the bottom sleeve rod 801 and the top rod 803, so as to facilitate the adjustment of the length of the force arm when the operator performs the rotation operation. The inclination observation device 9 includes a circular dial 90 fixedly installed on the upper end of the bottom sleeve rod 801 1, and a vertical rotating pointer 902 which can be vertically downward under the action of gravity is rotatably installed at the center of the circular scale plate 901, the circular scale plate 901 cannot rotate on the bottom sleeve rod 801, and the scale zero point on the circular scale plate 901 points to a direction perpendicular to the length direction of the bottom sleeve rod 801, and the vertical rotating pointer 902 can always rotate to a vertical downward state under the action of gravity, so that the angle between the scale zero point and the vertical rotating pointer 902 is the inclination angle of the length adjustment device 8 relative to the ground at this time, and the length adjustment device 8 can be read by The rotation angle of the steel bar 3 can be calculated by the change of the inclination angle before and after the rotation. The top of the top rod 803 is fixedly installed with the handle 10 by bolts. The handle 10 is a flat plate or a flat tube, which is convenient for manual gripping and pushing. The handle 10 is sleeved with a non-slip rubber sleeve. The bottom sleeve rod 801 and the rotating rod 4 are fixedly connected by a positioning connection device 7. The positioning connection device 7 includes a connecting seat 703. The bottom of the connecting seat 703 is fixed to the upper end of the rotating rod 4 by bolts. At least four fan-shaped arrangements and used for Insert the bottom sleeve rod 801 into the docking hole 704 at the bottom, and the connecting seat 703 is connected with a positioning rod 701 for plugging and fixing the bottom of the bottom sleeve rod 801 through a contraction spring 702. During operation, the operator can adjust the bottom sleeve rod 801 to the docking hole 704 at the corresponding position according to his own preferences and working conditions, so as to facilitate pushing the handle 10. For example, when the steel bar 3 is shorter, the bottom sleeve rod 801 can be inserted into the docking hole 704 closest to the inclination angle of the rotating rod 4 to avoid the handle 10 from colliding with the wall or other external equipment.

[0035] Example 2

[0036] See also Figure 4, a device for on-site forming of steel bar hooks for cast-in-place shear walls. The difference between the device in this embodiment and the device in embodiment 1 is that an indicating and positioning device 6 is provided on the rotating rod 4, and the indicating and positioning device 6 includes an auxiliary sliding seat 603 which is slidably sleeved on the rotating rod 4 and fixed to the rotating rod 4 through a third positioning screw 602. The upper end of the auxiliary sliding seat 603 is integrally formed with a positioning piece 601 which contacts the steel bar 3. The indicating and positioning device 6 as a whole can slide along the rotating rod 4, so that when the indicating and positioning device 6 is slid and the positioning piece 601 is aligned with a certain part on the steel bar 3, the scale corresponding to the part on the scale bar 11 can be quickly read from above the auxiliary sliding seat 603, which facilitates the reading of the scale. The indicating and positioning device 6 also has a special usage: when the lengths of the steel bars 3 extending out of the wall are the same, and the lengths required to be reserved when the ends of the steel bars 3 are bent are also the same, the indicating and positioning device 603 can be used to quickly locate the load-bearing points and clamping points on the steel bars 3. At this time, it is only necessary to fix the rotating arm 16, the positioning connecting sleeve 13 and the auxiliary sliding seat 603 at the corresponding positions on the rotating rod 4 in advance, and then pass the end of the steel bar 3 through the docking groove 17 and rest against the positioning piece 601. At this time, the position on the steel bar 3 that contacts the clamping docking seat 12 is exactly the clamping point, and the position on the steel bar 3 that contacts the bearing column 2 is exactly the load-bearing point. Therefore, the steel bar 3 can be quickly positioned, so that the subsequent bending operation can be carried out directly.

[0037] A construction method for a device for on-site forming of a steel bar hook for a cast-in-place shear wall comprises the following steps:

[0038] S1. Support in place: First, the support device 1 is moved to the corresponding working point according to the position of the steel bar 3, and then the fixed position of the support column 103 and the sliding sleeve 105 is changed by the second positioning screw 104, so that the upper end of the bearing column 2 is adjusted to be in contact with the bottom of the steel bar 3 by using the support device 1;

[0039] S2. Steel bar fixing: first, replace the clamping docking seat 12 of the corresponding size according to the diameter of the steel bar 3, and fix the rotating arm 16 on the rotating rod 4 in advance through the fifth positioning screw 14, then rotate the rotating rod 4 to a position parallel to the steel bar 3, and then, according to the straight rod length required to be reserved at the end of the steel bar 3 and the bending section length required to be reserved at the bending part of the steel bar 3, push the rotating rod 4 forward and backward, and use the scale bar 11 on the rotating rod 4 to measure the positions of the bearing point and the clamping point on the steel bar 3, and then adjust the position of the supporting device 1 again, align the bearing point with the bearing column 2 to the supporting position, and then slide the positioning connecting sleeve 13 forward and backward so that the docking groove 17 is clamped on the clamping point on the steel bar 3, and then fix the positioning connecting sleeve 13 to the rotating rod 4 through the sixth positioning screw 15;

[0040] S3. Start bending: When the steel bar 3 is fixed, the current inclination data of the length adjustment device 8 is observed through the inclination observation device 9, and the final required inclination angle position of the length adjustment device 8 is calculated according to the required bending angle of the steel bar 3, and then the handle 10 is manually pushed to move, so that the rotating rod 4 can rotate with the central axis of the bearing column 2 as the rotation center, thereby driving the steel bar 3 to bend, and the extended length of the handle 10 can be adjusted by the length adjustment device 8, and the angle between the handle 10 and the rotating rod 4 can be adjusted by the positioning connection device 7. In the process of rotating the rotating rod 4, the inclination data change on the inclination observation device 9 is always observed. When the inclination observation device 9 observes that the length adjustment device 8 rotates to the required rotation angle position, the bending is stopped, and the bending work of the steel bar 3 is completed at this time;

[0041] S4. Dismantling the equipment: When the bending of the steel bar 3 is completed, the end of the steel bar 3 can be taken out from the other side of the docking groove 17 manually, and then the height of the bearing column 2 can be adjusted by the supporting device 1 to make the bearing column 2 break away from the supporting state of the steel bar 3. The dismantling operation of the equipment can be completed. The dismantled equipment can be transported to the next position of the steel bar 3 that needs to be bent for the next round of operation.

[0042] In addition, when the steel bar 3 is already supported by an external structure at the load-bearing point position, the device can also temporarily remove the supporting device 1 and adjust the height of the rotating arm 16 so that the load-bearing column 2 is in a non-working position. At this time, the steel bar 3 is directly inserted into the docking groove 17 and the steel bar can be bent according to the subsequent process.

[0043] The steel bar bending device designed by the present invention can perform corresponding clamping according to the different diameters of the steel bar 3, and can freely measure and change the position on the steel bar 3 that needs to be bent through the scale bar 11 located on the rotating rod 4, and can bend the steel bar 3 at any angle. At the same time, it uses the lever principle for bending, which is more labor-saving. Compared with traditional manual steel bar bending tools, it has better adjustment accuracy and flexibility of use, and is also more convenient to store and carry, and has high practical value.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for on-site forming of steel bar hooks for cast-in-place shear walls, characterized in that: The device includes: A bearing column (2), wherein the bearing column (2) is fixedly supported on the ground by a supporting device (1) capable of adjusting the supporting height, and the bearing column (2) is used to place the steel bars (3) and align the portions where the steel bars (3) need to be bent; A rotating rod (4), wherein a scale bar (11) for marking a distance is provided on the rotating rod (4), and a rotating arm (16) is slidably mounted on the rotating rod (4), wherein the rotating arm (16) and the rotating rod (4) are fixed via a fifth positioning screw (14), and the end of the rotating arm (16) is rotatably mounted on the bearing column (2); A clamping docking seat (12), wherein a docking groove (17) for clamping the steel bar (3) is provided on the left side of the clamping docking seat (12), and the clamping docking seat (12) is fixed to the positioning connection sleeve (13) by bolts, the positioning connection sleeve (13) is slidably mounted on the rotating rod (4), and the positioning connection sleeve (13) is fixed to the rotating rod (4) by a sixth positioning screw button (15); A length adjustment device (8), wherein the length adjustment device (8) can adjust its own length by telescoping, and an inclination observation device (9) for detecting the bending angle of the steel bar (3) is provided on the length adjustment device (8), the bottom of the length adjustment device (8) is fixed to the upper end of the rotating rod (4), and the top of the length adjustment device (8) is fixed to the handle (10); The positioning connection sleeve (13) is provided with a limiting device (5), and a rotating frame (502) is rotatably mounted on the limiting device (5), and the rotating frame (502) and the positioning connection sleeve (13) are connected via a return spring (503), and a limiting plate (501) is hingedly mounted on the rotating frame (502), and the end of the limiting plate (501) is clamped with the clamping docking seat (12) and is used to compress the steel bar (3); The rotating rod (4) is provided with an indicating positioning device (6), and the indicating positioning device (6) comprises an auxiliary sliding seat (603) which is slidably sleeved on the rotating rod (4) and fixed to the rotating rod (4) via a third positioning screw (602), and a positioning piece (601) which contacts the steel bar (3) is integrally formed at the upper end of the auxiliary sliding seat (603); The length adjustment device (8) is composed of a bottom sleeve rod (801) and a top rod (803) that are slidably sleeved, and the bottom sleeve rod (801) and the top rod (803) are fixed via a fourth positioning screw (802), the bottom sleeve rod (801) is fixed to the upper end of the rotating rod (4), and the inclination observation device (9) is arranged at the upper end of the bottom sleeve rod (801), and the top of the top rod (803) is fixedly mounted to the handle (10) via bolts.

2. The device for on-site forming of a cast-in-place shear wall reinforcement hook according to claim 1, characterized in that: The support device (1) comprises a polygonal sleeve (102) fixedly mounted on a bearing column (2) via a first positioning screw (101), a support column (103) being fixedly mounted on the bottom of the polygonal sleeve (102), a sliding sleeve (105) being slidably sleeved on the support column (103) and fixed via a second positioning screw (104), and at least one pair of support arms (106) for support being fixedly mounted on the bottom of the sliding sleeve (105).

3. The device for on-site forming of a cast-in-place shear wall reinforcement hook according to claim 1, characterized in that: The handle (10) is a flat plate or a flat tube, and a non-slip rubber sleeve is sleeved and installed on the handle (10).

4. The device for on-site forming of a cast-in-place shear wall reinforcement hook according to claim 1, characterized in that: The inclination observation device (9) comprises a circular scale plate (901) fixedly mounted on the upper end of the bottom sleeve rod (801), and a vertical rotating pointer (902) which can be rotatably mounted at the center of the circular scale plate (901) and can be vertically downward under the action of gravity.

5. The device for on-site forming of a cast-in-place shear wall reinforcement hook according to claim 1, characterized in that: The bottom sleeve rod (801) and the rotating rod (4) are fixedly connected via a positioning connection device (7), and the positioning connection device (7) comprises a connecting seat (703), and the bottom of the connecting seat (703) is fixed to the upper end of the rotating rod (4) via bolts, and at least four connecting holes (704) arranged in a fan shape and used for inserting the bottom of the bottom sleeve rod (801) are arranged at equal angles on the connecting seat (703), and a positioning rod (701) for inserting and fixing the bottom of the bottom sleeve rod (801) is connected to the connecting seat (703) via a contraction spring (702).

6. A construction method for the on-site forming device for the steel bar hook of a cast-in-place shear wall as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Support in place: first, the support device (1) is moved to the corresponding working point according to the position of the steel bar (3), and then the upper end of the bearing column (2) is adjusted by the support device (1) to be able to contact the bottom of the steel bar (3); S2. Steel bar fixing: first, replace the clamping docking seat (12) of the corresponding size according to the diameter of the steel bar (3), and fix the rotating arm (16) on the rotating rod (4) in advance through the fifth positioning screw (14), then rotate the rotating rod (4) to a position parallel to the steel bar (3), and then push the rotating rod (4) forward and backward according to the length of the straight rod section required to be reserved at the end of the steel bar (3) and the length of the curved section required to be reserved at the curved part of the steel bar (3), and use the scale bar (11) located on the rotating rod (4) to measure the position of the bearing point and the clamping point on the steel bar (3), and then adjust the position of the supporting device (1) again, align the bearing point with the bearing column (2) to the supporting position, and then slide the positioning connecting sleeve (13) forward and backward so that the docking groove (17) is clamped on the clamping point on the steel bar (3), and then fix the positioning connecting sleeve (13) on the rotating rod (4) through the sixth positioning screw (15); S3. Start bending: After the steel bar (3) is fixed, the current inclination data of the length adjustment device (8) is observed through the inclination observation device (9), and the final required inclination angle position of the length adjustment device (8) is calculated according to the required bending angle of the steel bar (3), and then the handle (10) is manually pushed to move, so that the rotating rod (4) can rotate with the central axis of the bearing column (2) as the rotation center, thereby driving the steel bar (3) to bend. During the process of rotating the rotating rod (4), the inclination data change on the inclination observation device (9) is constantly observed. When the inclination observation device (9) observes that the length adjustment device (8) has rotated to the required rotation angle position, the bending is stopped, and the bending work of the steel bar (3) is completed at this time; S4. Dismantling the equipment: When the steel bar (3) is bent, the end of the steel bar (3) can be taken out from the other side of the docking groove (17) by manual operation, and then the height of the bearing column (2) can be adjusted by the supporting device (1) so that the bearing column (2) is separated from the supporting state of the steel bar (3). The dismantling operation of the equipment can be completed. The dismantled equipment can be moved to the next position of the steel bar (3) to be bent for the next round of operation.

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