Adjustable precast column dowel positioning tool

Abstract

The utility model discloses an adjustable prefabricated column reinforcing bar positioning tool relates to the technical field of assembly type prefabricated column installation, including a piece of positioning steel ring plate and a plurality of reinforcing bar positioning clamps, and the positioning steel ring plate is around the column outside longitudinal reinforcement, and the inboard of positioning steel ring plate is fixed with a plurality of reinforcing bar positioning clamps, and reinforcing bar positioning clamps are embedded with the positioning steel ring plate and are fixedly connected, and the upper and lower parts of reinforcing bar positioning clamps are respectively equipped with connecting assembly, and the upper connecting assembly is the positioning fixed clamp of embedded fixed position steel ring plate, and the lower connecting assembly is the reinforcing bar fixed sheet for fixing prefabricated column reinforcing bar, and the positioning fixed clamp includes steel ring plate fixed groove, screw rod and expansion fixed foot, and the screw rod passes through the thread hole on steel ring plate fixed groove, and the expansion fixed foot is arranged at the bottom of screw rod, and the expansion fixed foot is pasted on the top surface of positioning steel ring plate after screw rod is tightened. The utility model tool not only can position limit and fix reinforcing bar of assembly type prefabricated column, but also can be repeatedly used, and the installation fixed efficiency is high, and the economy is good.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated column installation technology, and in particular to a device for adjusting the positioning of prefabricated column reinforcing bars. Background Technology

[0002] Precast concrete frame structures refer to structural systems composed of precast concrete columns, beams, slabs, and other components assembled and connected using reliable connection methods, forming a unified load-bearing structure together with cast-in-place concrete or cement-based grouting. In this system, connection nodes are critical components affecting structural performance, primarily including column-to-column, beam-to-column, and beam-to-beam nodes. Among these, column-to-column nodes directly relate to the overall structure's seismic performance and resistance to progressive collapse. As a vital line of defense for the frame structure under seismic loads, their design and construction quality are particularly critical.

[0003] Currently, grouting sleeve connection technology is commonly used to connect precast columns. Specifically, the grouting sleeve is pre-embedded at the bottom of the upper precast column, while the reinforcing bars of the lower precast column extend above the cast-in-place floor slab. The reserved length must simultaneously meet the anchorage requirements of the reinforcing bars within the sleeve and the joint width requirements. During on-site installation, positioning steel plates and other devices are needed to fix the lower protruding reinforcing bars to ensure accurate alignment with the sleeve in the upper precast column.

[0004] However, existing integral positioning steel plates still have the following prominent problems in practical applications: 1. Difficult installation and disassembly: When the reinforcing bars are misaligned, the integral positioning steel plate is difficult to adjust. Installation and disassembly often require manual forceful hammering, resulting in low work efficiency and high labor intensity for workers. 2. Easy to deform and low reusability: During construction, integral steel plates are prone to plastic deformation, and the deformation is usually irreversible, resulting in a high scrap rate and limited recycling times; 3. High steel consumption and high cost: Integral steel plates are usually processed on a large scale in one go, which consumes more materials, making it difficult to control project costs and resulting in poor economic efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an adjustable precast column reinforcement positioning tool that is easy to install and disassemble, can improve the efficiency of precast column reinforcement positioning and fixing, has a high reusability, and is more economical.

[0006] The technical solution adopted by this utility model to solve its technical problem is: an adjustable precast column reinforcement positioning tool, including a positioning steel ring plate and multiple reinforcement positioning clamps. The positioning steel ring plate surrounds the outer longitudinal reinforcement of the column. Multiple reinforcement positioning clamps are fixed on the inner side of the positioning steel ring plate. The reinforcement positioning clamps are fitted and fixed to the positioning steel ring plate. The upper and lower parts of the reinforcement positioning clamps have two connecting components respectively. The upper connecting component is a positioning and fixing clamp for embedding and fixing the positioning steel ring plate. The lower connecting component is a reinforcement fixing piece for fixing the precast column reinforcement. The positioning and fixing clamp includes a steel ring plate fixing groove, a screw rod, and an enlarged fixing foot. The screw rod passes through the threaded hole on the steel ring plate fixing groove. The enlarged fixing foot is located at the bottom of the screw rod. After the screw rod is tightened, the enlarged fixing foot fits against the top surface of the positioning steel ring plate.

[0007] Furthermore, the positioning steel ring plate has a U-shaped structure.

[0008] Furthermore, the steel ring plate fixing groove has a U-shaped structure.

[0009] Furthermore, the enlarged fixing foot has a circular structure and is welded to the screw.

[0010] Furthermore, the positioning and fixing clamp also includes an anti-loosening nut, which is located on the top surface of the fixing groove of the steel ring plate, sleeved on the outside of the screw, and threadedly connected to the screw. By tightening the anti-loosening nut, the screw is fixed, thereby tightening the positioning and fixing clamp and the positioning steel ring plate.

[0011] Furthermore, an anti-slip washer is provided between the anti-loosening nut and the fixing groove of the steel ring plate.

[0012] Furthermore, the positioning steel ring plate and the rebar positioning clamp are separate structures.

[0013] Furthermore, the positioning and fixing clamp is made of the same material as the rebar fixing plate, thus forming a complete rebar positioning clamp for use.

[0014] Furthermore, the reinforcing bar fixing piece is welded to the positioning and fixing clamp.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By using positioning steel ring plates and rebar positioning clamps (including rebar fixing plates, steel ring plate fixing grooves, screws, enlarged fixing feet, anti-slip washers, etc.), precast column reinforcing bars can be fixed and positioned independently. Furthermore, the separate installation of positioning steel ring plates and rebar positioning clamps allows for the fixing and positioning of precast column reinforcing bars with different cross-sectional dimensions and quantities, eliminating the cumbersome process of drilling holes in multiple steel plates to fix the reinforcing bars. This results in higher installation efficiency and greater steel utilization. Simultaneously, it allows for fixing precast column reinforcing bars according to different positioning dimensions to ensure the accuracy of precast column hoisting.

[0016] In summary, this utility model tool can not only position, restrict, and fix the reinforcing bars of prefabricated columns, but it can also be reused, resulting in high installation and fixing efficiency and good economy. Attached Figure Description

[0017] Figure 1 A plan view of an adjustable precast column reinforcement positioning tool provided for an embodiment of this utility model; Figure 2 for Figure 1 Plan view of the rebar positioning clamp in the structure shown; Figure 3 for Figure 1 A sectional view of the rebar positioning clamp in the structure shown; Explanation of the reference numerals in the figure: 1. Positioning steel ring plate; 2. Rebar positioning clamp; 3. Positioning and fixing clamp; 4. Anti-loosening nut; 5. Rebar fixing plate; 6. Steel ring plate fixing groove; 7. Screw; 8. Anti-slip washer; 9. Enlarged fixing foot; 10. Rebar fixing hole; 11. Precast column insert. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Reference Figures 1-3 This embodiment provides an adjustable precast column reinforcement positioning tool, including a positioning steel ring plate 1 and multiple reinforcement positioning clamps 2. The positioning steel ring plate 1 surrounds the outer longitudinal reinforcement of the column. Multiple reinforcement positioning clamps 2 are fixed on the inner side of the positioning steel ring plate 1. The reinforcement positioning clamps 2 are fitted and fixed to the positioning steel ring plate 1. The upper and lower parts of the reinforcement positioning clamps 2 are respectively provided with connecting components. The upper connecting component is a positioning fixing clamp 3 that is fitted and fixed to the positioning steel ring plate 1. The lower connecting component is a reinforcement fixing piece 5 for fixing the precast column reinforcement 11. The positioning fixing clamp 3 includes a steel ring plate fixing groove 6, a screw rod 7, and an enlarged fixing foot 9. The screw rod 7 passes through the threaded hole on the steel ring plate fixing groove 6. The enlarged fixing foot 9 is located at the bottom of the screw rod 7. After the screw rod 7 is tightened, the enlarged fixing foot 9 fits against the top surface of the positioning steel ring plate 1.

[0020] In this embodiment, the positioning steel ring plate 1 has a U-shaped structure.

[0021] In this embodiment, the steel ring plate fixing groove 6 has a U-shaped structure.

[0022] In this embodiment, the enlarged fixing foot 9 has a circular structure and is welded to the screw 7.

[0023] In this embodiment, the positioning and fixing clamp 3 further includes an anti-loosening nut 4. The anti-loosening nut 4 is located on the top surface of the steel ring plate fixing groove 6 and is sleeved on the outside of the screw 7 and threadedly connected to the screw 7. By tightening the anti-loosening nut 4, the screw 7 is further fixed, thereby tightening the positioning and fixing clamp 3 and the positioning steel ring plate 1.

[0024] In this embodiment, an anti-slip washer 8 is provided between the anti-loosening nut 4 and the steel ring plate fixing groove 6.

[0025] In this embodiment, the positioning steel ring plate 1 and the rebar positioning clamp 2 are separate structures. The rebar positioning clamp 2 is fixedly connected to the positioning steel ring plate 1 by a screw 7, an enlarged fixing foot 9 and a steel ring plate fixing groove 6.

[0026] In this embodiment, the positioning and fixing clamp 3 is made of the same material as the rebar fixing piece 5, forming a complete rebar positioning clamp 2.

[0027] In this embodiment, the steel bar fixing piece 5 is welded to the positioning and fixing clamp 3 for easy processing.

[0028] Working principle: First, the positioning clamp 3 and the rebar fixing plate 5 are welded together to form the rebar positioning clamp 2. Then, the rebar positioning spacing dimension lines are marked on the positioning steel ring plate 1. Next, the positioning steel ring plate 1 is wrapped around the outer longitudinal reinforcement of the column and fixed to a horizontal plane. Then, the rebar positioning clamp 2 is fitted onto the precast column insert rebar 11 through the rebar fixing hole 10 on the rebar fixing plate 5. Then, the rebar positioning clamp 2 is embedded and fixed to the positioning steel ring plate 1 through the steel ring plate fixing groove 6. Finally, the screw 7, through the threaded hole, expands the fixing foot 9 to tighten the positioning steel ring plate 1 into the steel ring plate fixing groove 6. At this point, the rebar positioning clamp 2 has fixed the precast column insert 11 to the inside of the positioning steel ring plate 1. When tightening the screw 7, first loosen the anti-loosening nut 4 and the anti-slip washer 8 to facilitate tightening the screw 7, so that the lower end of the screw 7 expands the fixing foot 9 and fits tightly against the top surface of the positioning steel ring plate 1. Then, tighten the anti-loosening nut 4 so that the anti-slip washer 8 firmly abuts against the top surface of the fixing groove 6 of the steel ring plate, thereby fixing the rebar positioning clamp 2 to the inside of the positioning steel ring plate 1. At this time, the precast column insert 11 passing through the rebar fixing hole 10 on the rebar positioning clamp 2 is fixed and limited according to the rebar positioning spacing dimension line on the steel ring plate 1. Then, follow the above steps to fix the other precast column inserts 11 according to the rebar positioning spacing dimension line on the positioning steel ring plate 1.

[0029] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these are within the scope of protection of the present invention.

Claims

1. An adjustable precast column reinforcement bar positioning tool, characterized in that: The device includes a positioning steel ring plate and multiple rebar positioning clamps. The positioning steel ring plate surrounds the outer longitudinal reinforcement of the column. Multiple rebar positioning clamps are fixed to the inner side of the positioning steel ring plate. The rebar positioning clamps are fitted and fixed to the positioning steel ring plate. The upper and lower parts of the rebar positioning clamps are respectively provided with connecting components. The upper connecting component is a positioning and fixing clamp for embedding and fixing the positioning steel ring plate, and the lower connecting component is a rebar fixing plate for fixing the precast column reinforcement. The positioning and fixing clamp includes a steel ring plate fixing groove, a screw rod, and an enlarged fixing foot. The screw rod passes through the threaded hole on the steel ring plate fixing groove, and the enlarged fixing foot is located at the bottom of the screw rod. After the screw rod is tightened, the enlarged fixing foot fits against the top surface of the positioning steel ring plate.

2. The adjustable precast column reinforcement positioning tool according to claim 1, characterized in that: The positioning steel ring plate has a U-shaped structure.

3. An adjustable precast column reinforcement positioning tool according to claim 1 or 2, characterized in that: The steel ring plate fixing groove has a U-shaped structure.

4. An adjustable precast column reinforcement positioning tool according to claim 1 or 2, characterized in that: The enlarged fixing foot has a circular structure and is welded to the screw.

5. An adjustable precast column reinforcement positioning tool according to claim 1 or 2, characterized in that: The positioning and fixing clamp also includes an anti-loosening nut, which is located on the top surface of the fixing groove of the steel ring plate, sleeved on the outside of the screw, and threadedly connected to the screw. By tightening the anti-loosening nut, the screw is fixed, thereby tightening the positioning and fixing clamp and the positioning steel ring plate.

6. The adjustable precast column reinforcement positioning tool according to claim 5, characterized in that: An anti-slip washer is provided between the anti-loosening nut and the fixing groove of the steel ring plate.

7. An adjustable precast column reinforcement positioning tool according to claim 1 or 2, characterized in that: The positioning steel ring plate and the rebar positioning clamp are separate structures.

8. An adjustable precast column reinforcement positioning tool according to claim 1 or 2, characterized in that: The positioning and fixing clamp is made of the same material as the rebar fixing plate, forming a complete rebar positioning clamp.

9. The adjustable precast column reinforcement positioning tool according to claim 8, characterized in that: The reinforcing bar fixing plate is welded to the positioning and fixing clamp.

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