A reinforcement bar insertion device and construction method for the top of a structural column

Abstract

This invention provides a structural column top reinforcement insertion device and construction method, comprising: two beam bottom formworks, two beam side plates installed on the two beam bottom formworks, a movable sleeve formwork set between the two beam bottom formworks, two steel formworks with one end movably slidably inserted into the movable sleeve formwork, two double-sided adhesive tapes set between the two steel formworks and the two beam side plates, a plurality of insertion holes symmetrically opened on the two steel formworks, and a plurality of steel reinforcement fastening components symmetrically fixed to the bottom of the two steel formworks and corresponding one-to-one with the plurality of insertion holes. This structural column top reinforcement insertion device and construction method, through the cooperation of the set steel reinforcement fastening components, telescopic fixing components, and adjusting components, realizes the insertion of structural column reinforcements of various specifications with accurate positioning, reduces grout leakage caused by pre-embedded structural column top reinforcements, is easy and simple to dismantle, and avoids damage to the formwork caused by top reinforcement insertion.

Description

Technical Field

[0001] This invention relates to the field of wall construction casting technology, and more specifically, to a reinforcement insertion device and construction method for the top of a structural column. Background Technology

[0002] Structural columns are indispensable seismic-resistant components in modern building construction. The construction quality of structural columns directly affects the seismic resistance of secondary structures. The steel bars inside the structural columns are the main load-bearing materials, and the quality of steel bar construction is of paramount importance in the quality control of structural column construction.

[0003] Currently, there are generally two methods for constructing reinforcing steel bars in structural columns: one is post-installation rebar technology, which involves drilling holes in the bottom of beams or slabs and injecting rebar adhesive into the holes to securely connect the rebar to the main structure. However, post-installation rebar requires drilling, which can easily encounter the rebar in the structural members, leading to inaccurate hole positions or insufficient hole depth, and may even damage the installation pipelines. Furthermore, the rebar at the top of the structural column is prone to detachment during adhesive injection and insertion, and adhesive leakage can result in insufficient insertion depth and bonding strength, significantly affecting construction quality. The other method is cast-in-place pre-embedded rebar technology, which involves pre-embedding the structural column rebar by drilling holes in the formwork. However, drilling holes in the formwork can easily cause concrete leakage, honeycomb-like exposed rebar at the bottom of beams or slabs, and rebar displacement during vibration. Moreover, when removing the formwork, the deformation of the rebar can make removal difficult or damage the formwork.

[0004] In the prior art, patent CN107083804B, "A Method for Installing Reinforcing Bars in Wall Structural Columns," provides a method for installing reinforcing bars in wall structural columns, avoiding post-installation of reinforcing bars in structural columns. However, this method uses steel plates to fix the openings, resulting in a large consumption of steel plates when there are many specifications of structural columns and reinforcing bars; the limiting bars are welded to the main bars, making removal difficult, easily damaging the concrete at the bottom of the component, and making it difficult to reuse the steel plates.

[0005] In the prior art, patent CN109372191B, "A Rebar Positioner Device for Structural Columns," provides a rebar positioner device for structural columns, which solves the problem of accurately fixing the position of pre-embedded reinforcing bars. However, the pre-embedded reinforcing bars require drilling holes in the formwork, and multiple drillings are required when the diameter of the reinforcing bars changes, which easily leads to grout leakage. Cement grout can easily flow along the reinforcing bars into the receiving cylinder, causing blockage. Summary of the Invention

[0006] The purpose of this invention is to provide a device for inserting reinforcing bars at the top of structural columns and a construction method therefor, in order to solve the above-mentioned problems.

[0007] To achieve the above objectives, the present invention provides a structural column top reinforcement insertion device, comprising: two beam bottom formworks, two beam side plates installed on the two beam bottom formworks, a movable sleeve formwork disposed between the two beam bottom formworks, two steel formworks with one end movably slidably inserted into the movable sleeve formwork, two double-sided adhesive tapes disposed between the two steel formworks and the two beam side plates, a plurality of insertion holes symmetrically opened on the two steel formworks, a plurality of reinforcement fastening components symmetrically fixed to the bottom of the two steel formworks and corresponding one-to-one with the plurality of insertion holes, a plurality of preset reinforcement bars inserted into the plurality of insertion holes and the plurality of reinforcement fastening components, two telescopic fixing members installed on the two steel formworks and the plurality of reinforcement fastening components, an adjusting component installed at the bottom of the movable sleeve formwork, a fixing rod disposed at the bottom of the adjusting component, stirrups tied to the lower ends of the plurality of reinforcement bars, and two connecting rods perpendicularly fixed to the fixing rod in the middle and connected to the stirrups at both ends, wherein...

[0008] The aforementioned steel reinforcement fastening components are adapted to ensure the insertion stability of the aforementioned pre-set reinforcing bars within the aforementioned insertion holes;

[0009] The two telescopic fixing members are adapted to ensure the stability of the connection between the two steel templates and the movable sleeve template after adjustment;

[0010] The adjustment component is adapted to control the angle of the fixed rod, and then, with the cooperation of the connecting rod, controls the angle adjustment of several preset inserts.

[0011] Furthermore, the rebar fastening assembly includes a fixing shell fixed to the lower surface of the steel template, a fixing groove formed on the fixing shell and corresponding to the insertion hole, an adjustable bidirectional screw rotatably connected to the fixing shell, a guide rod fixedly connected to the fixing shell, two adjusting blocks whose one end is threaded to both ends of the adjustable bidirectional screw and whose other end is movably sleeved on the guide rod, two first clamping blocks symmetrically arranged in the fixing groove, and two control rods whose one end is fixedly connected to the two adjusting blocks and whose other end is rotatably connected to the two first clamping blocks and movably mounted on the fixing shell.

[0012] Both of the first clamping blocks abut against the preset insert.

[0013] Furthermore, the rebar fastening assembly also includes a rubber pad that is movably sleeved outside the preset insert and extends to the insertion hole at its lower end, two fastening screws that are symmetrically threaded on the fixed shell, and two second clamping blocks that are symmetrically arranged in the fixed groove and rotatably connected to the tail ends of the two fastening screws respectively.

[0014] Both of the second clamping blocks abut against the rubber pad block;

[0015] The upper diameter of each of the rubber pads is larger than the diameter of each of the insertion holes, and the lower surface of the upper end of each of the rubber pads abuts against the upper surface of each of the two steel templates.

[0016] Furthermore, the telescopic fixing component includes an adjusting screw sleeve disposed below the movable sleeve, two adjustable screws symmetrically threaded inside the adjusting screw sleeve, and four fixing nuts disposed below one of the steel templates and threadedly connected to the two adjustable screws respectively.

[0017] The four fixing nuts are symmetrically fixed to the two fixing shells on the lower surface of one of the steel templates.

[0018] Furthermore, the adjustment assembly includes a control disk rotatably connected to the lower surface of the movable mold, a positioning toothed ring fixedly sleeved on the control disk, a positioning rack disposed below the movable mold and meshing with the positioning toothed ring, a direction positioning element disposed on the movable mold and the positioning rack, an angle adjusting half-ring fixedly connected to the lower surface of the control disk, a movable groove formed in the angle adjusting half-ring, and an angle positioning element disposed on the angle adjusting half-ring and the fixed rod;

[0019] The upper end of the fixed rod is disposed in the movable groove and is rotatably connected to the angle adjustment semi-ring.

[0020] Furthermore, the directional positioning component includes a control seat fixedly connected to the lower surface of the movable mold, a control groove formed in the control seat for the positioning rack to move, two return springs symmetrically arranged in the control groove, a pull rod fixed on the positioning rack, two sliding grooves symmetrically formed on the control seat for the pull rod to move at both ends, a positioning screw threaded on the control seat, and two positioning screw holes formed on the positioning rack and adapted to the tail end of the positioning screw.

[0021] The two ends of the reset spring are fixedly connected to the positioning rack and the inner wall of the control groove, respectively.

[0022] Furthermore, the angle positioning component includes a positioning hole opened at the upper end of the fixed rod, a plurality of adjustment holes equally spaced on the angle adjusting half ring, and a positioning pin that fits and slides into the positioning hole and two of the adjustment holes.

[0023] Furthermore, each of the two steel templates is fixedly connected with a fixing plate, and each of the two fixing plates is detachably fixed to the two beam side plates by long nails.

[0024] Furthermore, the lower surfaces of both steel templates are symmetrically provided with length scale grooves, and the lower surface of the movable sleeve mold and the angle adjustment semi-ring are both provided with angle scale grooves.

[0025] A construction method for inserting reinforcing bars at the top of a structural column, specifically including the following steps:

[0026] S1. Accurately locate the structural column components by measuring the layout marks and mark the positions of the structural column components;

[0027] S2. Install two beam bottom formworks along the surveyed lines, leaving gaps at the structural columns, and install two beam side plates at the ends of the two beam bottom plates.

[0028] S3. Take two steel templates and make insertion holes at several corners of the protruding parts of the two steel templates. The hole diameter can be the maximum diameter of the actual reinforcing bar in the project + 5mm. Then insert the two steel templates into the movable sleeve mold and inject graphite or lubricating oil into the movable sleeve mold in advance to ensure that the two steel templates can freely expand and contract in the plane. Then weld several reinforcing bar fastening components to the bottom of the two steel templates respectively, and ensure that the fixing groove in the reinforcing bar fastening components coincides with the center of the insertion hole on the bottom mold steel plate. Next, install two expansion fasteners in the expansion and contraction direction at the bottom of the two steel templates, and weld several fixing nuts in the two expansion fasteners to several reinforcing bar fastening components respectively. Finally, install the adjustment component equipped with the fixing rod at the bottom of the movable sleeve mold to complete the assembly of the reinforcing bar device.

[0029] S4. Install the assembled reinforcing bar device in the gap between the two beam bottom formworks. In the beam width direction, the two steel formworks can be moved according to different beam widths to adjust the width of the device. The required width of the device can be precisely adjusted by the length scale groove on the steel formwork. The device is tightly attached to the two beam side plates with double-sided adhesive. The fixing plate is fixed to the two beam side plates with long nails to make the device firmly fixed.

[0030] S5. Punch holes in several rubber pads, with the hole diameter being the same as that of several pre-set reinforcing bars, and fit them onto several pre-set reinforcing bars. Tie the reinforcing bars of the components onto several pre-set reinforcing bars and clean the working surface. The holes set in this device can be used as cleaning ports to remove sawdust, stone chips and other debris.

[0031] S6. Insert the pre-set reinforcing bars of the pre-fitted rubber pads into the corresponding holes, and adjust the rubber pads to fit tightly against the steel template. After adjusting the length of the pre-set reinforcing bars, fix the pre-set reinforcing bars with several steel bar fastening components. When the diameter of the pre-set reinforcing bars changes, they can still be securely fixed with steel bar fastening components without having to re-drill holes or modify the device.

[0032] S7. Secure the pre-inserted reinforcing bars to the lower part of the device with stirrups. Connect the stirrups to the two connecting rods in the device by binding to control the displacement of the free ends of the pre-inserted reinforcing bars.

[0033] S8. If the structural column needs to have a decorative design, it needs to be tilted. The angle of the fixing rod can be controlled by the setting adjustment component, which in turn affects and controls the angle of several preset inserts. Before punching the rubber pad, the punching angle also needs to be changed according to the tilt angle of the preset inserts to ensure that the rubber pad stably seals the upper end of the insert.

[0034] S9. During the concrete pouring process, if the free end of the pre-installed reinforcing bar is found to be displaced, it can be adjusted through the reinforcing bar fastening assembly to ensure that the position of the pre-installed reinforcing bar is accurate after the concrete has set.

[0035] S10. After the concrete is poured and cured, remove the beam side plates first, then remove this device. After cleaning, it can be used again.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The structural column top reinforcement insertion device and construction method utilizes a structure with two movable steel formwork panels that can move within a movable formwork to facilitate adjustment and adaptation to the beam width of the structural column to be constructed. This facilitates reinforcement insertion for structural columns of various specifications. The expansion joints provide stable support for the two steel formwork panels, and two fixing plates ensure stable assembly of the two steel formwork panels between the two beam side plates and the two beam bottom formwork panels. This guarantees the stability of the movable formwork and the two steel formwork panels during concrete pouring, preventing deformation at the connection point. This effectively improves the stability of several pre-installed reinforcement bars during concrete pouring, facilitates demolding after concrete curing, and allows for multiple reuses of the device, saving materials and promoting energy conservation and environmental protection.

[0038] 2. The top reinforcement bar device and construction method for this structural column, through the installation of several reinforcement bar fastening components, allows for the insertion of several pre-set reinforcement bars into several holes. After adjusting the vertical insertion depth of the pre-set reinforcement bars, they are stably clamped and fixed. This method is adaptable to the fixing of pre-set reinforcement bars of different sizes. In conjunction with the fixing rods vertically installed at the bottom of the movable formwork, stirrups are tied to the lower ends of the pre-set reinforcement bars. After the two connecting rods welded to the fixing rods are tied to the stirrups, the free ends of the pre-set reinforcement bars at the bottom are effectively restricted, effectively preventing damage during concrete pouring. The vibration process ensures the stable positioning of several pre-installed reinforcing bars, making the installation of reinforcing bars more stable, simple, effective, and aesthetically pleasing. This greatly reduces problems such as reinforcing bar displacement and difficulty in rebar installation in structural columns. At the same time, the set reinforcing bar fastening components can not only fix several pre-installed reinforcing bars, but also stably seal and block several insertion holes. During concrete pouring and vibration, this prevents grout leakage at several insertion holes, ensuring the quality of concrete pouring, reducing concrete waste and saving concrete. It also facilitates the separation of the two during later formwork removal, making formwork removal convenient.

[0039] 3. The top reinforcement insertion device and construction method of the structural column, by adopting this construction method, avoids the need for post-installation of reinforcement, solves the problem of rework due to inaccurate positioning of reinforcement, saves the construction cost of reinforcement installation, and can better ensure the construction quality. It also avoids the mechanical noise and dust pollution generated during the drilling process in the post-installation process, which facilitates green construction.

[0040] 4. The top reinforcement insertion device and construction method for this structural column, through the set adjustment components, can accurately and stably control the rotation and tilt of the adjustment fixing rod to adapt to the data of the tilt direction and angle of the structural column. After the rotation direction of the fixing rod is adjusted, the connection between the fixing rod and several pre-set reinforcement bars is completed by the stirrups and two connecting rods. It can control the angle adjustment and positioning of several pre-set reinforcement bars synchronously with the fixing rod. When tilting the reinforcement bars, it is only necessary to change the drilling angle of the rubber pad in the reinforcement fastening component before the pre-set reinforcement bars to match the tilt angle of the reinforcement bars. This ensures the stable clamping and fixing of the tilted pre-set reinforcement bars by the reinforcement fastening component, meets the requirements of accurate reinforcement insertion for inclined structural columns, solves the technical problem of difficult reinforcement insertion for inclined structural columns, and achieves the technical effect of accurate angle of inclined reinforcement insertion. It has high practicality. Attached Figure Description

[0041] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0042] Figure 1 A perspective view of the present invention is shown;

[0043] Figure 2 A partial exploded view of the present invention is shown;

[0044] Figure 3A partial bottom-view perspective view of the present invention is shown;

[0045] Figure 4 A partial bottom view of the present invention is shown;

[0046] Figure 5 A partial cross-sectional view of the present invention is shown;

[0047] Figure 6 A partial cross-sectional perspective view of the present invention is shown;

[0048] Figure 7 A partial bottom-view exploded view of the present invention is shown;

[0049] Figure 8 A partial bottom sectional view of the present invention is shown;

[0050] Figure 9 A partially disassembled perspective view of the present invention is shown.

[0051] In the figure, the same reference numerals represent the same structural element, wherein:

[0052] 1. Beam bottom formwork; 2. Beam side plate; 3. Movable formwork; 4. Steel formwork; 5. Double-sided adhesive; 6. Insertion hole; 7. Reinforcing bar fastening assembly; 8. Pre-installed reinforcing bars; 9. Expansion joint; 10. Adjustment assembly; 11. Fixing rod; 12. Stirrup; 13. Connecting rod; 14. Fixing shell; 15. Fixing groove; 16. Adjustable bidirectional screw; 17. Guide rod; 18. Adjustment block; 19. First clamping block; 20. Control rod; 21. Rubber pad; 22. Fastening screw; 23. Second clamping block; 24. Adjustment screw 25. Sleeve; 26. Adjustable length screw; 27. Fixing nut; 28. Control panel; 29. ​​Positioning gear ring; 30. Positioning rack; 31. Directional positioning component; 32. Angle adjusting half ring; 33. Movable groove; 34. Angle positioning component; 35. Control seat; 36. Control groove; 37. Return spring; 38. Pull rod; 39. Slide groove; 40. Positioning screw hole; 41. Positioning hole; 42. Adjustment hole; 43. Positioning pin; 44. Fixing piece; 45. Length scale groove; 46. Angle scale groove. Detailed Implementation

[0053] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0054] like Figure 1-9As shown, a structural column top reinforcement insertion device and construction method includes: two beam bottom formworks 1, two beam side plates 2 installed on the two beam bottom formworks 1, a movable sleeve 3 set between the two beam bottom formworks 1, two steel formworks 4 with one end movably slidably inserted into the movable sleeve 3, two double-sided adhesive tapes 5 set between the two steel formworks 4 and the two beam side plates 2, a plurality of insertion holes 6 symmetrically opened on the two steel formworks 4, a plurality of steel reinforcement fastening components 7 symmetrically fixed to the bottom of the two steel formworks 4 and corresponding one-to-one with the plurality of insertion holes 6, a plurality of pre-installed reinforcement bars 8 respectively inserted into the plurality of insertion holes 6 and the plurality of steel reinforcement fastening components 7, two telescopic fixing members 9 installed on the two steel formworks 4 and the plurality of steel reinforcement fastening components, an adjustment component 10 installed at the bottom of the movable sleeve 3, a fixing rod 11 set at the bottom of the adjustment component 10, stirrups 12 tied to the lower ends of the plurality of pre-installed reinforcement bars, and two connecting rods 13 vertically fixed to the fixing rod 11 in the middle and connected to the stirrups 12 at both ends.

[0055] The aforementioned steel bar fastening components 7 are adapted to ensure the insertion stability of the aforementioned pre-set reinforcing bars 8 within the aforementioned insertion holes 6;

[0056] The two telescopic fixing members 9 are adapted to ensure the stability of the connection between the two steel templates 4 and the movable sleeve 3 after adjustment;

[0057] The adjusting component 10 is adapted to control the angle of the fixing rod 11, and then, with the cooperation of the connecting rod, controls the angle adjustment of several preset reinforcing bars 8. In use, the movable sleeve 3 and two steel templates 4 are placed at the structural column position, and the position of the two steel templates 4 within the movable sleeve 3 is controlled so that the width of the movable sleeve 3 matches the width of the structural column to be constructed. The width of this device can be adjusted according to different beam widths, thus facilitating the construction of structural columns of different sizes when needed, and has strong versatility. Then, several reinforcing bar fastening components 7 can be welded and fixed below the two steel templates 4, and the two telescopic fixing parts 9 can be connected to the several steel templates 4. Next, the two steel formwork 4 are supported to ensure their stability after adjustment. They are then detachably fixed to the two beam side plates 2 using two fixing pieces 44. This allows the movable formwork and the two steel formwork 4 to be stably assembled between the two beam bottom formwork 1s, ensuring stability during concrete pouring. The lower ends of the two steel formwork 4 and the two beam side plates 2 are sealed with double-sided adhesive 5 to prevent concrete leakage, improving the subsequent forming quality of the structural column. This also prevents deformation at the connection between the movable formwork and the two steel formwork 4, solving problems such as the offset of the pre-installed reinforcing bars 8 in the structural column and the easy damage to the steel formwork 4. This facilitates the subsequent forming of the steel formwork after concrete is formed. Demolding of plate 4; After inserting several pre-set reinforcing bars 8 into several holes 6 and adjusting the vertical insertion depth, several pre-set reinforcing bar fastening components 7 can stably clamp the pre-set reinforcing bars 8 into the holes 6 respectively, and can effectively seal the holes 6, thereby ensuring the accurate positioning of the pre-set reinforcing bars 8, which is conducive to ensuring the construction quality and facilitating the fixing of pre-set reinforcing bars 8 of different specifications. It is highly practical. When fixing the pre-set reinforcing bars 8 by changing the size, it is not necessary to drill holes in the steel plate mold again, avoiding mechanical noise and dust pollution generated during the drilling process. At the same time, the several pre-set reinforcing bar fastening components 7 can simultaneously clamp and fix the pre-set reinforcing bars 8. To ensure stable sealing of several insertion holes 6, and thus prevent grout leakage at several insertion holes 6 during concrete pouring and vibration, which would affect the forming quality of the structural column and subsequent demolding; after fixing several pre-set reinforcing bars 8, stirrups 12 are tied to the lower ends of several pre-set reinforcing bars 8, and two connecting rods 13 welded to the fixing rod 11 are tied to the stirrups 12. Under the control of the adjusting component 10, the fixing rod 11 can be kept perpendicular to the movable mold 3, which can effectively restrict the free ends of several pre-set reinforcing bars 8 at the lower end, further preventing the several pre-set reinforcing bars 8 from shifting during concrete pouring and vibration, and ensuring the stable positioning of several pre-set reinforcing bars 8;When casting reinforcing bars for decorative structural columns where the bottom and top are not on the same plane, the tilt direction and angle of the structural column are first determined. The adjustment component 10 allows for accurate and stable control of the rotation and tilt of the adjusting rod 11 to match the tilt direction and angle data of the structural column. After the rotation direction of the fixing rod 11 is adjusted, the connection between the fixing rod 11 and several pre-set reinforcing bars 8 is completed by the stirrups 12 and two connecting rods 13. This allows for synchronous angle adjustment and positioning of the pre-set reinforcing bars 8 with the fixing rod 11. When tilting the reinforcing bars, simply adjust the drilling angle of the rubber pad 21 in front of the pre-set reinforcing bar 8 according to the tilt angle of the reinforcing bar. This ensures stable clamping and fixing of the tilted pre-set reinforcing bars 8 by the reinforcing bar fastening component 7, satisfying the accurate insertion of reinforcing bars into inclined structural columns. This solves the technical problem of difficult insertion of reinforcing bars into inclined structural columns and achieves the technical effect of precise angle insertion of inclined reinforcing bars, demonstrating high practicality.

[0058] Optionally, the rebar fastening assembly 7 includes a fixing shell 14 fixed to the lower surface of the steel template 4, a fixing groove 15 opened on the fixing shell 14 and corresponding to the insertion hole 6, an adjustable bidirectional screw 16 rotatably connected in the fixing shell 14, a guide rod 17 fixedly connected in the fixing shell 14, two adjusting blocks 18 with one end threadedly connected to both ends of the adjustable bidirectional screw 16 and the other end movably sleeved on the guide rod 17, two first clamping blocks 19 symmetrically arranged in the fixing groove 15, and two control rods 20 with one end fixedly connected to the two adjusting blocks 18 and the other end rotatably connected to the two first clamping blocks 19 and movably installed on the fixing shell 14.

[0059] Both first clamping blocks 19 abut against the pre-installed reinforcing bars 8. After the movable sleeve mold 3 and the two steel templates 4 are assembled between the two beam bottom templates 1, several reinforcing bar fastening components 7 can be assembled. Several fixing shells 14 are welded to the lower surface of the two steel templates 4, ensuring that the center of several fixing grooves 15 coincides with the center of several insertion holes 6. Then, several pre-installed reinforcing bars 8 can be inserted into several fixing grooves 15 through several insertion holes 6. At this time, the adjustable bidirectional screw 16 can be rotated to control the two adjusting blocks 18 to move closer or further apart under the guidance and restriction of the guide rod 17. Under the push or pull of the two control rods 20, the two clamping blocks move closer or further apart, thus completing the clamping of the pre-installed reinforcing bars 8 located in the fixing grooves 15. The system allows for easy fixing and loosening of the pre-installed reinforcing bars 8, facilitating the adjustment of their vertical insertion depth before fixing. It also allows for adjustment of the vertical insertion depth as needed. Even when the diameter of several pre-installed reinforcing bars 8 changes, they remain stably fixed within their slots without requiring re-drilling or modification of the two steel templates 4. This ensures accurate positioning of the pre-installed reinforcing bars 8, contributing to construction quality and resolving the problem of rework due to inaccurate bar positioning. Furthermore, during concrete pouring, if displacement is observed at the free end of any pre-installed reinforcing bars 8, the screwing length of the two fastening bolts in the corresponding reinforcing bar fastening assembly 7 can be controlled by rotation to stably clamp the reinforcing bars 8, ensuring accurate positioning after the concrete has set.

[0060] Optionally, the steel bar fastening assembly 7 further includes a rubber pad 21 that is movably sleeved outside the preset insert 8 and extends to the insertion hole 6, two fastening screws 22 that are symmetrically threaded on the fixing shell 14, and two second clamping blocks 23 that are symmetrically arranged in the fixing groove 15 and rotatably connected to the tail ends of the two fastening screws 22 respectively.

[0061] Both of the second clamping blocks 23 abut against the rubber pad block 21;

[0062] The upper diameter of each of the rubber pads 21 is larger than the diameter of each of the insertion holes 6, and the lower surface of the upper end of each of the rubber pads 21 abuts against the upper surface of each of the two steel templates 4. When the preset insertion rod 8 is initially positioned by the two first clamping blocks 19, the rubber pads 21 sleeved on the outside of the preset insertion rod 8 are controlled to move downward, so that the lower end of the rubber pad 21 passes through the insertion hole 6 and enters the fixing groove 15, while the upper end of the rubber pad 21 can abut against the steel template 4 and close the insertion hole 6, thereby enabling the subsequent... During concrete pouring, leakage of grout at the insertion hole 6 can be avoided, which would affect the forming quality of the structural column. At the same time, the two fastening screws 22 can be rotated to push the two second clamping blocks 23 closer together and against the rubber pad 21. With the movement of the two second clamping blocks 23, the lower end of the rubber pad 21 can be clamped, ensuring the stability of the rubber pad 21 after sealing the insertion hole 6. During concrete pouring and vibration, the rubber pad 21 will not shift in position and affect the sealing effect of the insertion hole 6.

[0063] Optionally, the telescopic fixing member 9 includes an adjusting screw sleeve 24 disposed below the movable sleeve mold 3, two adjustable length screws 25 symmetrically threaded inside the adjusting screw sleeve 24, and four fixing nuts 26 disposed below one of the steel templates 4 and threadedly connected to the two adjustable length screws 25 respectively.

[0064] Four fixing nuts 26 are symmetrically fixed to two fixing shells 14 on the lower surface of one of the steel templates 4. When the two steel templates 4 are moved from the movable mold 3 and the length of the movable mold 3 and the two steel templates 4 are kept consistent with the width of the structural column beam, two fixing nuts 26 can be welded to two of the fixing shells 14 below the two steel templates 4. With the cooperation of the fixing nuts 26, one side of each of the two fixing shells 14 below the two steel templates 4 is rotatably threaded with an adjustable length screw 25. An adjusting threaded sleeve is threaded between the two adjustable length screws below the two steel templates 4, completing the assembly of a single telescopic fixing component 9 below the movable mold 3. With the cooperation of the two telescopic fixing components 9, the bottom of the two steel templates 4 can be effectively supported, thereby ensuring the levelness of the two steel templates 4, improving the stability of the two steel templates 4 during concrete pouring and vibration, avoiding deformation at the connection between the movable mold 3 and the two steel templates 4, which would affect subsequent demolding, facilitating the reuse of the steel templates 4, saving materials, and being energy-saving and environmentally friendly.

[0065] Optionally, the adjustment assembly 10 includes a control disk 27 rotatably connected to the lower surface of the movable mold 3, a positioning toothed ring 28 fixedly sleeved on the control disk 27, a positioning rack 29 disposed below the movable mold 3 and meshing with the positioning toothed ring 28, a direction positioning member 30 disposed on the movable mold 3 and the positioning rack 29, an angle adjusting half-ring 31 fixedly connected to the lower surface of the control disk 27, a movable groove 32 formed in the angle adjusting half-ring 31, and an angle positioning member 33 disposed on the angle adjusting half-ring 31 and the fixed rod 11;

[0066] The upper end of the fixing rod 11 is set in the movable groove 32 and rotatably connected to the angle adjusting semi-ring 31. During the pouring of reinforcement bars for normal structural columns, under the control of the angle positioning, the fixing rod 11 is ensured to be vertically placed at the bottom of the movable mold 3. Then, with the cooperation of the stirrup 12 and the two connecting rods 13, the displacement of the free ends of several preset reinforcement bars 8 is effectively restricted, ensuring that the several preset reinforcement bars 8 remain vertically stable during concrete pouring, thereby ensuring the quality of the reinforcement bars for structural columns. However, in the pouring of decorative structural columns where the bottom and top are not in the same plane... During reinforcement insertion, the fixed rod 11 can be adjusted and controlled to rotate to the required tilt direction by using the designed tilt direction of the structural column and the directional positioning component 30. Then, the connecting rod 13 is welded and connected to the stirrup 12. Finally, the angle positioning component 33 is used to adjust the angle of several preset reinforcement bars 8 to match the tilt angle of the designed structural column after rotating the fixed rod 11. This ensures accurate reinforcement insertion of the inclined structural column, solves the technical problem of difficult reinforcement insertion of inclined structural columns, and achieves the technical effect of accurate angle of inclined reinforcement insertion.

[0067] Optionally, the directional positioning component 30 includes a control seat 34 fixedly connected to the lower surface of the movable mold 3, a control groove 35 opened in the control seat 34 for the positioning rack 29 to move, two return springs 36 symmetrically arranged in the control groove 35, a pull rod 37 fixed on the positioning rack 29, two sliding grooves 38 symmetrically opened on the control seat 34 for the pull rod 37 to move at both ends, a positioning screw 39 threaded on the control seat 34, and two positioning screw holes 40 opened on the positioning rack 29 and adapted to the tail end of the positioning screw 39.

[0068] The two ends of the return spring 36 are fixedly connected to the positioning rack 29 and the inner wall of the control groove 35, respectively. When inserting the reinforcing bars of the inclined structural column, according to the required tilt angle of several preset reinforcing bars 8, the pull rod 37 is pulled first to control the positioning rack 29 to move in the control groove 35, so that it moves away from and releases the limiting position of the positioning tooth ring 28. At the same time, the two return springs 36 are compressed, and the control disk 27 can be rotated so that the direction of the angle adjustment of the fixed rod 11 is consistent with the direction of the required tilt of several preset reinforcing bars 8. Then the pulling force on the pull rod 37 is released, and under the elastic force of the two return springs 36, the positioning rack 29 can be pushed to reset, meshing and locking the positioning tooth disk, so that the control disk 27 can maintain the position after the direction adjustment.

[0069] Optionally, the angle positioning component 33 includes a positioning hole 41 opened at the upper end of the fixed rod 11, a plurality of adjustment holes 42 equally spaced on the angle adjustment semi-ring 31, and a positioning pin 43 that fits and slides into the positioning hole 41 and two of the adjustment holes 42. After rotating the control disk 27 to a suitable angle and completing the positioning after directional control of the control disk 27 under the control of the direction positioning component 30, the positioning pin 43 is pulled out from the positioning hole 41 and two of the adjustment holes 42. Then, according to the required tilt angle of several preset inserts 8, the upper end of the fixed rod 11 is controlled to rotate in the movable groove 32, so that the rotation angle of the fixed rod 11 is consistent with the required tilt angle of the preset inserts 8. During the rotation of the fixed rod 11, it will drive several preset inserts 8 to complete the angle adjustment together. Then, the positioning pin 43 is inserted into the positioning hole 41 and the corresponding two adjustment holes 42, so that the fixed rod 11 drives several preset inserts 8 to maintain the position after rotation, thus meeting the requirements of the inclined structural column inserts.

[0070] Optionally, each of the two steel formwork templates 4 is fixedly connected with a fixing plate 44. The two fixing plates 44 are detachably fixed to the two beam side plates 2 by long nails. The fixing plates 44 are welded to the steel formwork templates 4 and fixed to the beam side plates 2 by long nails. This ensures the stability of the two steel formwork templates 4 when they are erected between the two beam bottom formwork templates 1 during concrete pouring, while facilitating the subsequent demolding of the device.

[0071] Optionally, the lower surfaces of the two steel templates 4 are symmetrically provided with length scale grooves 45, and the lower surface of the movable sleeve mold 3 and the angle adjustment semi-ring 31 are provided with angle scale grooves 46. With the cooperation of the length scale grooves 45 on the two steel templates 4, the user can accurately control the length of the two steel templates 4 pulled out in the movable sleeve mold 3. Thus, the required width of the device can be accurately adjusted according to the beam width. When constructing special structural columns, it is necessary to control the tilt of several pre-set reinforcing bars 8. The two angle scale grooves 46 can ensure the accuracy of the rotation angle of the control disc 27 and the fixed rod 11. Thus, several pre-set reinforcing bars 8 can be synchronously and accurately adjusted to the set angle to meet the reinforcing bar requirements and quality of the structural column.

[0072] A construction method for inserting reinforcing bars at the top of a structural column, specifically including the following steps:

[0073] S1. Accurately locate the structural column components by measuring the layout marks and mark the positions of the structural column components;

[0074] S2. Install two beam bottom formwork 1 through the measured and marked lines, leave a gap at the structural column, and install two beam side plates 2 at the ends of the two beam bottom plates;

[0075] S3. Take two steel templates 4 and make insertion holes 6 at several corners of the extended parts of the two steel templates 4. The hole diameter can be the maximum diameter of the actual reinforcing bar in the project + 5mm. Then insert the two steel templates 4 into the movable sleeve mold 3 and inject graphite or lubricating oil into the movable sleeve mold 3 in advance to ensure that the two steel templates 4 can freely expand and contract in the plane. Then weld several reinforcing bar fastening components 7 to the bottom of the two steel templates 4 respectively, and ensure that the fixing groove 15 in the reinforcing bar fastening components 7 coincides with the center of the insertion hole 6 on the bottom mold steel plate. Then install two telescopic fixing parts 9 in the telescopic direction at the bottom of the two steel templates 4, and weld several fixing nuts 26 in the two telescopic fixing parts 9 to several reinforcing bar fastening components 7 respectively. Finally, install the adjusting component 10 equipped with fixing rod 11 at the bottom of the movable sleeve mold 3 to complete the assembly of the reinforcing bar device.

[0076] S4. Install the assembled reinforcing bar device in the gap between the two bottom beam formwork 1. In the beam width direction, the two steel formwork 4 can be moved according to different beam widths to adjust the width of the device. The required width of the device can be precisely adjusted by the length scale groove 45 on the steel formwork 4. The device is tightly attached to the two beam side plates 2 by double-sided adhesive tape 5. The fixing plate 44 is fixed to the formwork on both sides of the beam with long nails to make the device firmly fixed.

[0077] S5. Punch holes in several rubber pads 21, with the hole diameter being the same as that of several preset inserts 8, and fit them onto several preset inserts 8. Tie the component reinforcement on several preset inserts 8 and clean the working surface. Several insertion holes 6 set in this device can be used as cleaning ports to remove sawdust, stone chips and other debris.

[0078] S6. Insert the pre-set reinforcing bar 8 of the pre-fitted rubber pad 21 into the corresponding insertion hole 6, and adjust the rubber pad 21 to fit tightly against the steel template 4. After adjusting the length of the pre-set reinforcing bar 8, fix the pre-set reinforcing bar 8 by the set reinforcing bar fastening components 7. When the diameter of the pre-set reinforcing bar 8 changes, it can still be firmly fixed by the reinforcing bar fastening components 7 without having to re-drill holes or modify the device.

[0079] S7. Secure the pre-inserted reinforcing bars 8 to the lower part of the device with stirrups 12. The stirrups 12 are connected and fixed to the two connecting rods 13 in the device by binding, so as to control the displacement of the free ends of the pre-inserted reinforcing bars 8.

[0080] S8. If the structural column needs to have a decorative design, it needs to be tilted. The angle of the fixing rod 11 can be controlled by the setting adjustment component 10, which in turn affects and controls the angle of several preset inserts 8. Before punching the rubber pad 21, the punching angle also needs to be changed according to the tilt angle of the preset inserts 8 to ensure that the rubber pad 21 stably seals the upper end of the insert 6.

[0081] S9. During the concrete pouring process, if the free end of the pre-set reinforcing bar 8 is found to be displaced, it can be adjusted by the reinforcing bar fastening component 7 to ensure that the position of the pre-set reinforcing bar 8 is accurate after the concrete has set.

[0082] S10. After the concrete is poured and cured, remove the beam side plate 2 first, then remove this device. After cleaning, it can be used again.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for inserting reinforcing bars at the top of a structural column, characterized in that, include: Two beam bottom templates (1), two beam side plates (2) installed on the two beam bottom templates (1), a movable sleeve (3) set between the two beam bottom templates (1), two steel templates (4) with one end movably slidably inserted into the movable sleeve (3), two double-sided adhesive tapes (5) set between the two steel templates (4) and the two beam side plates (2), several insertion holes (6) symmetrically opened on the two steel templates (4), several steel reinforcement fastening components (7) symmetrically fixed to the bottom of the two steel templates (4) and corresponding one-to-one with the several insertion holes (6), several pre-set reinforcing bars (8) inserted into the several insertion holes (6) and the several steel reinforcement fastening components (7), and two telescopic fasteners (9) installed on the two steel templates (4) and the several steel reinforcement fastening components. The adjustment assembly (10) installed at the bottom of the movable mold (3), the fixing rod (11) set at the bottom of the adjustment assembly (10), the stirrup (12) tied to the lower end of the plurality of preset inserts (8), and the two connecting rods (13) that are vertically fixed to the fixing rod (11) in the middle and connected to the stirrup (12) at both ends, wherein the plurality of steel reinforcement fastening assemblies (7) are adapted to ensure the insertion stability of the plurality of preset inserts (8) in the plurality of insertion holes (6); the two telescopic fixing members (9) are adapted to ensure the stability of the connection between the two steel templates (4) and the movable mold (3) after adjustment; the adjustment assembly (10) is adapted to control the angle of the fixing rod (11), and then, with the cooperation of the connecting rod (13), control the angle adjustment of the plurality of preset inserts (8); The rebar fastening assembly (7) includes a fixed shell (14) fixed to the lower surface of the steel template (4), a fixed groove (15) opened on the fixed shell (14) and corresponding to the insertion hole (6), an adjustable bidirectional screw (16) rotatably connected in the fixed shell (14), a guide rod (17) fixedly connected in the fixed shell (14), two adjustment blocks (18) with one end threaded to both ends of the adjustable bidirectional screw (16) and the other end movably sleeved on the guide rod (17), two first clamping blocks (19) symmetrically arranged in the fixed groove (15), and two control rods (20) with one end fixedly connected to the two adjustment blocks (18) and the other end rotatably connected to the two first clamping blocks (19) and movably installed on the fixed shell (14); the two first clamping blocks (19) abut against the preset insertion bar (8); The telescopic fixing component (9) includes an adjusting screw sleeve (24) disposed below the movable sleeve (3), two adjustable length screws (25) symmetrically threaded inside the adjusting screw sleeve (24), and four fixing nuts (26) disposed below one of the steel templates (4) and threadedly connected to the two adjustable length screws (25) respectively; the four fixing nuts (26) are symmetrically fixed on the two fixing shells (14) on the lower surface of one of the steel templates (4); The adjustment assembly (10) includes a control disk (27) rotatably connected to the lower surface of the movable mold (3), a positioning toothed ring (28) fixedly sleeved on the control disk (27), a positioning rack (29) disposed below the movable mold (3) and meshing with the positioning toothed ring (28), a direction positioning element (30) disposed on the movable mold (3) and the positioning rack (29), an angle adjustment half-ring (31) fixedly connected to the lower surface of the control disk (27), a movable groove (32) opened in the angle adjustment half-ring (31), and an angle positioning element (33) disposed on the angle adjustment half-ring (31) and the fixed rod (11); the upper end of the fixed rod (11) is disposed in the movable groove (32) and rotatably connected to the angle adjustment half-ring (31).

2. The structural column top reinforcement insertion device as described in claim 1, characterized in that, The steel bar fastening assembly (7) also includes a rubber pad (21) movably sleeved outside the preset insert (8) and extending to the insertion hole (6) at its lower end; two fastening screws (22) symmetrically threaded on the fixed shell (14); two second clamping blocks (23) symmetrically arranged in the fixed groove (15) and rotatably connected to the tail ends of the two fastening screws (22); both second clamping blocks (23) abut against the rubber pad (21); the upper diameter of the plurality of rubber pads (21) is larger than the diameter of the plurality of insertion holes (6), and the lower surface of the upper end of the plurality of rubber pads (21) abuts against the upper surface of the two steel templates (4).

3. The structural column top reinforcement insertion device as described in claim 2, characterized in that, The directional positioning component (30) includes a control seat (34) fixedly connected to the lower surface of the movable mold (3), a control groove (35) opened in the control seat (34) for the positioning rack (29) to move, two return springs (36) symmetrically arranged in the control groove (35), a pull rod (37) fixed on the positioning rack (29), two sliding grooves (38) symmetrically opened on the control seat (34) for the pull rod (37) to move at both ends, a positioning screw (39) threaded on the control seat (34), and two positioning screw holes (40) opened on the positioning rack (29) and adapted to the tail end of the positioning screw (39); the two ends of the return spring (36) are fixedly connected to the positioning rack (29) and the inner wall of the control groove (35) respectively.

4. The structural column top reinforcement insertion device as described in claim 3, characterized in that, The angle positioning component (33) includes a positioning hole (41) opened at the upper end of the fixed rod (11), a plurality of adjustment holes (42) opened at equal intervals on the angle adjustment half ring (31), and a positioning pin (43) that fits and slides into the positioning hole (41) and two of the adjustment holes (42).

5. A structural column top reinforcement insertion device as described in claim 4, characterized in that, Each of the two steel templates (4) is fixedly connected with a fixing plate (44), and the two fixing plates (44) are detachably fixedly connected to the two beam side plates (2) by long nails.

6. The structural column top reinforcement insertion device as described in claim 5, characterized in that, The lower surfaces of the two steel templates (4) are symmetrically provided with length scale grooves (45), and the lower surface of the movable sleeve mold (3) and the angle adjustment half ring (31) are provided with angle scale grooves (46).

7. A construction method for inserting reinforcing bars at the top of a structural column, implemented using a reinforcing bar insertion device as described in claim 5 or 6, characterized in that, Specifically, the steps include the following: S1. Accurately locate the structural column components by measuring the layout marks and mark the positions of the structural column components; S2. Install two beam bottom formwork (1) through the measured and marked line, leave a gap at the structural column, and install two beam side plates (2) at the ends of the two beam bottom plates. S3. Take two steel templates (4) and make insertion holes (6) at several corners of the extended parts of the two steel templates (4). The hole diameter is the maximum diameter of the actual insertion bar in the project + 5mm. Then insert the two steel templates (4) into the movable mold (3) and inject graphite or lubricating oil into the movable mold (3) in advance to ensure that the two steel templates (4) can freely expand and contract in the plane. Then weld several steel bar fastening components (7) to the bottom of the two steel templates (4) respectively, and ensure that the fixing groove (15) in the steel bar fastening component (7) coincides with the center of the insertion hole (6) on the bottom mold steel plate. Then install two telescopic fixing parts (9) in the telescopic direction at the bottom of the two steel templates (4), and weld several fixing nuts (26) in the two telescopic fixing parts (9) to several steel bar fastening components (7) respectively. Finally, install the adjustment component (10) equipped with the fixing rod (11) at the bottom of the movable mold (3) to complete the assembly of the insertion bar device. S4. Install the assembled reinforcing bar device in the gap between the two bottom beam templates (1). In the beam width direction, the two steel templates (4) can be moved according to different beam widths to adjust the width of the device. The required width of the device can be precisely adjusted by the length scale groove (45) on the steel template (4). The device is tightly attached to the two beam side plates (2) by double-sided adhesive (5). The fixing plate (44) is fixed to the two beam side plates (2) with long nails to make the device firmly fixed. S5. Punch holes in several rubber pads (21), with the hole diameter being the same as that of several pre-set inserts (8), and fit them onto several pre-set inserts (8). Tie the reinforcing bars of the components onto several pre-set inserts (8), and clean the working surface. Several inserts (6) set in this device are used as cleaning ports to remove sawdust and stone chips. S6. Insert the pre-set reinforcing bar (8) of the pre-set rubber pad (21) into the corresponding insertion hole (6), and adjust the rubber pad (21) to fit tightly against the steel template (4). After adjusting the length of the pre-set reinforcing bar (8), fix the pre-set reinforcing bar (8) by the set steel bar fastening components (7). When the diameter of the pre-set reinforcing bar (8) changes, it is securely fixed by the steel bar fastening components (7). There is no need to re-drill holes or modify the device here. S7. Secure the pre-inserted reinforcing bars (8) at the bottom of the device with stirrups (12). The stirrups (12) are connected and fixed to the two connecting rods (13) in the device by binding, so as to control the displacement of the free ends of the pre-inserted reinforcing bars (8). S8. If the structural column needs to have a decorative design, it needs to be tilted. The angle of the fixing rod (11) is controlled by the setting adjustment component (10), which in turn affects and controls the angle of several preset inserts (8). Before punching the rubber pad (21), the punching angle also needs to be changed according to the tilt angle of the preset inserts (8) to ensure that the rubber pad (21) stably seals the upper end of the insert (6). S9. During the concrete pouring process, if the free end of the pre-set dowel (8) is found to be displaced, it shall be adjusted by the rebar fastening assembly (7) to ensure that the position of the pre-set dowel (8) is accurate after the concrete has set. S10. After the concrete is poured and cured, first remove the beam side plate (2), then remove this device, clean it and continue to use it.

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