Positioning device for steel bar diagonal crossing operation and installation method thereof

Abstract

The application belongs to the technical field of building construction, and particularly relates to a positioning device for steel bar oblique crossing operation and a mounting method thereof, which comprises a first positioning ring, a positioning fixture, a supporting buckle and a second positioning ring. The first positioning ring and the second positioning ring both comprise concentrically arranged inner rings and outer rings. The inner rings are fixedly connected with the outer rings through section steels. The inner rings and the outer rings are both provided with mounting grooves matched with the positioning fixture. The positioning fixture has multiple groups and is movably arranged in the mounting grooves. The second positioning ring is detachably connected with the first positioning ring through the supporting buckle. The application has the beneficial effect of realizing angle correction and positioning of steel bars in steel-concrete composite structure construction.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a positioning device and its installation method for diagonally intersecting steel reinforcement operations. Background Technology

[0002] With the rapid development of the construction industry and the acceleration of urbanization, the safety and durability of building structures face higher requirements. The steel-concrete composite structure, which has emerged in response to this need, can give full play to the advantages of both steel and concrete. With proper combination, it has better static and dynamic performance, and can also save a lot of steel, reduce project costs, reduce environmental pollution, and speed up construction. It is in line with the development direction of building structures in my country. When the concrete beam is connected to the steel column of the foundation in the steel-concrete composite structure, the beam reinforcement should not pass through the flange of the steel column and should not be directly welded to the steel in the column. Therefore, the method of wrapping around the steel frame is often used for construction.

[0003] The traditional construction method involves workers prefabricating bent steel bars according to design drawings, and then connecting and constructing them with the steel columns of the foundation. However, due to limitations in workers' processing skills and actual site conditions, the design requirements for prefabricated steel bars differ greatly from the actual installation location, resulting in the need for secondary processing of steel bars on site, which affects construction efficiency and concrete forming quality. Summary of the Invention

[0004] The present invention addresses the problems mentioned above by designing a positioning device and its installation method for obliquely intersecting rebar operations, enabling the angle correction and positioning of rebars during the construction of steel-concrete composite structures.

[0005] To achieve the above objectives, the present invention provides a positioning device for obliquely intersecting rebar operations, comprising a first positioning ring, a positioning clamp, a support buckle, and a second positioning ring. Both the first and second positioning rings include concentric inner and outer rings. The inner ring is fixedly connected to the outer ring by a steel section. Both the inner and outer rings are provided with mounting grooves that match the positioning clamp. Multiple sets of positioning clamps are movably disposed within the mounting grooves. The second positioning ring is detachably connected to the first positioning ring via the support buckle.

[0006] Furthermore, the first positioning ring also includes an angle ruler, which is fixedly connected to the inner ring.

[0007] Furthermore, the positioning fixture includes a clamping ring, and a screw, a fastening nut one, and a fastening nut two symmetrically arranged on both sides of the clamping ring. The clamping ring has a threaded hole, the screw is threaded to the clamping ring, and the fastening nut one and fastening nut two are threaded to the screw and respectively press against the inner and outer walls of the clamping ring.

[0008] Furthermore, the clamping ring comprises multiple interlocking semi-rings, the free ends of which are toothed and the free ends of the multiple semi-rings mesh with each other.

[0009] Furthermore, the clamping ring is equipped with a limiting block, and the mounting groove includes a straight groove and a stepped groove that are connected. The limiting block is inserted into the straight groove and is movably engaged with the stepped groove.

[0010] Furthermore, the positioning fixture also includes a square steel bar and a D-shaped pad. The square steel bar is fixedly connected to the screw rod, and a set of opposite square steel bars inside the clamping ring abut against the reinforcing bar. The D-shaped pad has a through hole, in which the screw rod is inserted. The arc-shaped end of the D-shaped pad abuts against the inner wall of the clamping ring, and the flat end of the D-shaped pad abuts against the second fastening nut.

[0011] Furthermore, the support buckle includes a male buckle and a female buckle with a slot, wherein the male buckle is engaged with the female buckle by a torsion fastener.

[0012] Furthermore, the torsion fastener is provided with a protrusion and a chamfer, and the female fastener is provided with a groove that matches the protrusion.

[0013] The present invention also includes a method for installing a positioning device for obliquely intersecting rebar operations, comprising the following steps:

[0014] 1) Based on the construction design drawings of the steel-concrete composite structure and the construction site conditions, measure and lay out the lines, and install the first positioning ring;

[0015] 2) Installation of positioning clamps: Determine the approximate position of the positioning clamps according to the arrangement of the reinforcing bars. The positioning clamps are installed in pairs on the inner and outer rings of the first positioning ring, wherein the limiting blocks on the clamping ring pass through the straight groove and the stepped groove in sequence.

[0016] 3) Installation of concrete beam reinforcement: One pair of positioning clamps supports one reinforcement bar. The distance between the square steel bars is adjusted by tightening nuts one and two. Tighten the nuts to determine the position of the reinforcement bar. Two reinforcement bars set at a certain angle require two pairs of positioning clamps. Determine the position of the two pairs of positioning clamps according to the construction design drawings. Select two concrete beam reinforcement bars to pass through the two pairs of positioning clamps and tighten the bolts to fix them.

[0017] 4) Installation of the second positioning ring: After the limiting blocks on the clamping ring pass through the straight groove and stepped groove of the second positioning ring in sequence, assemble and twist to lock the support buckle.

[0018] 5) After step four, the multi-layer positioning device is installed. In step four, multiple sets of positioning devices are set in the horizontal and vertical directions respectively, and adjacent positioning rings are connected by support buckles.

[0019] 6) Adjust the angle of the reinforcing bars, observe the angle ruler, and use positioning clamps to adjust the length and assembly angle of the reinforcing bars to meet the requirements of the construction design drawings and on-site use;

[0020] 7) Rebar welding: After the angle and length of the rebar are determined, the welder will carry out the welding operation of the two rebars on site.

[0021] 8) After the positioning device is removed and the reinforcing bars are welded, first release the support buckle from the positioning ring, rotate the positioning ring so that the limiting block passes through the stepped groove and the straight groove in sequence, release the installation groove from the positioning clamp, loosen the fastening nut, and unscrew the clamping ring to release the restriction on the reinforcing bars.

[0022] In summary, the present invention has the following advantages and beneficial technical effects:

[0023] 1. This invention features a first positioning ring, a positioning clamp, and a second positioning ring. These components work together to meet the reinforcement needs of steel bars in different design scenarios and combinations. Traditional construction methods require continuous adjustment and correction of the bending curvature of the steel bars according to actual site requirements, resulting in significant waste of manpower and resources. However, the positioning device of this invention makes the steel bar arrangement more in line with site requirements, reduces errors in steel bar assembly and rework during construction, improves construction efficiency and quality, simplifies the construction process to a certain extent, and reduces construction difficulty and complexity. Furthermore, the positioning device in this invention is suitable for cross-operation construction of multi-layer and multi-angle steel bars.

[0024] 2. In this invention, many components are detachable, which facilitates recycling, reduces unnecessary material consumption, and saves construction costs. Moreover, the device is mostly made of steel structure, which has certain strength and durability, and has a high structural load-bearing capacity, which helps to reduce economic losses caused by device structure failure and extend the service life of the device.

[0025] 3. In this invention, the first and second positioning rings are welded to the inner and outer rings with steel profiles to form an integral frame, enhancing the strength and support performance of the components. The angle gauge allows workers to easily observe and adjust the connection angle of the reinforcing bars at any time, resulting in an integrated structure and improved construction efficiency. The positioning clamp slides within the installation groove to adjust the cross angle of the reinforcing bars to meet the on-site construction conditions and design requirements. The screw and fastening nut work together to fix the position of the reinforcing bars. The semi-ring design in the clamping ring allows for quick removal of the clamping ring's restriction on the reinforcing bars by unscrewing the semi-ring, saving disassembly time. The toothed edge design in the semi-ring prevents the clamping ring from axially disengaging after being compressed, improving structural stability. The square steel increases the contact area with the reinforcing bars, improving clamping stability. The D-shaped pad evenly distributes the compressive stress of the fastening nut on the clamping ring, avoiding stress concentration that could affect the structural strength of the clamping ring.

[0026] 4. The support buckle in this invention is used to connect the first positioning ring and the second positioning ring, and adjacent positioning devices in the horizontal or vertical direction. The torsion fastener prevents the male and female buckles from axially disengaging and improves the connection strength of the components. The protrusion is used for radial locking of the male and female buckles, further improving the stability of the components. The chamfer design reduces sharp edges, prevents scratches to workers and the female buckle, and cuts into a bevel to achieve a smoother transition. Attached Figure Description

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a three-dimensional schematic diagram of a single positioning device of the present invention;

[0029] Figure 2 This is a front view schematic diagram of a single positioning device of the present invention;

[0030] Figure 3 This is a top view schematic diagram of a single positioning device of the present invention;

[0031] Figure 4 This is a three-dimensional schematic diagram of the positioning fixture in this invention;

[0032] Figure 5 This is a schematic diagram of the installation of the positioning clamp in this invention;

[0033] Figure 6 This is a three-dimensional perspective view of the supporting buckle in this invention;

[0034] Figure 7 This is a perspective view of the support buckle in this invention;

[0035] Figure 8 This is a three-dimensional schematic diagram of the multi-layer positioning device of the present invention.

[0036] The reference numerals in the attached figures are:

[0037] 1. First positioning ring; 11. Inner ring; 12. Outer ring; 13. Structural steel; 14. Mounting groove; 15. Angle gauge;

[0038] 2. Positioning clamp; 21. Clamping ring; 22. Screw; 23. Fastening nut one; 24. Fastening nut two; 25. Limiting block; 26. Square steel; 27. Pad block;

[0039] 3. Support buckle; 31. Male buckle; 32. Female buckle; 33. Torsion fastener; 4. Second positioning ring. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout; the described embodiments are some embodiments of this invention, but not all embodiments; the embodiments and directional terms described below with reference to the accompanying drawings are exemplary and intended to explain this invention, and should not be construed as limiting this invention; all other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. The embodiments of this invention will be described in detail below with reference to the accompanying drawings:

[0041] The following is in conjunction with the appendix Figures 1-8 The present invention will be further described in detail below:

[0042] Example 1

[0043] like Figures 1-3 As shown, this embodiment discloses a positioning device for diagonally intersecting rebar operations, including a first positioning ring 1, a positioning clamp 2, a support buckle 3, and a second positioning ring 4. The first positioning ring 1 and the second positioning ring 4 have the same structure and size, each including an inner ring 11 and an outer ring 12 arranged concentrically. The inner ring 11 is fixedly connected to the outer ring 12, which is on the same horizontal plane, by a steel section 13. There are four steel sections 13, which are arranged in a circular array about the center of the inner ring 11. Both the inner ring 11 and the outer ring 12 are provided with mounting grooves 14 that match the positioning clamp 2. There are multiple sets of positioning clamps 2, which are arranged longitudinally on the end face where the clamping opening is located. The positioning clamp 2 is movably engaged in the mounting groove 14. The steel section 13 in the second positioning ring 4 is detachably connected to the steel section 13 of the first positioning ring 1 by the support buckle 3. The first positioning ring 1 also includes a 360° horizontal angle ruler 15, which is fixedly set at the bottom of the inner ring 11 in the first positioning ring 1.

[0044] like Figures 4-5As shown, the positioning clamp 2 includes a clamping ring 21, and screws 22, fastening nuts 23 and 24 symmetrically arranged on both sides of the clamping ring 21. The axial direction of the clamping ring 21 is perpendicular to the central axis of the first positioning ring 1. The clamping ring 21 has a pair of threaded holes. The screws 22 are threaded to the clamping ring 21 through the threaded holes. The fastening nuts 23 and 24 are threaded to the screws 22. After tightening, they press against the inner and outer walls of the clamping ring 21 respectively. The clamping ring 21 includes two semi-rings that are hinged to each other around a hinge axis. The free ends of the semi-rings opposite to the hinge axis are toothed, and the free ends of the two semi-rings mesh with each other. A limiting device is installed at one end of the clamping ring 21 located in the mounting groove 14. The positioning block 25 and the mounting groove 14 include a straight groove and a stepped groove that are connected. The opening directions of the two are perpendicular. The opening of the straight groove is located in the vertical direction, and the stepped groove is arranged in the circumferential direction with its opening in the horizontal plane. After the positioning block 25 is inserted into the straight groove, it is movably locked into the stepped groove. The positioning clamp 2 also includes a square steel 26 and a D-shaped pad 27. The square steel 26 is welded to one end of the screw 22 located in the clamping ring 21, and a set of opposite square steels 26 in the clamping ring 21 abuts against the same steel bar. The D-shaped pad 27 has a through hole, and the screw 22 is inserted into the through hole. The arc end of the D-shaped pad 27 matches the arc of the inner wall of the clamping ring 21 and abuts against the inner wall of the clamping ring 21. The flat end of the D-shaped pad 27 abuts against the fastening nut 24.

[0045] like Figures 6-7 As shown, the support buckle 3 includes a male buckle 31 and a female buckle 32 with a slot. The male buckle 31 is engaged with the female buckle 32 by a torsion fastener 33. The torsion fastener 33 is provided with a protrusion and a chamfer, and the slot of the female buckle 32 is provided with a groove that matches the protrusion.

[0046] Example 2

[0047] An installation method for a positioning device for obliquely intersecting rebar operations according to the present invention is as follows:

[0048] Step 1: Install the first positioning ring 1, measure and lay out the lines. According to the construction design drawings of the steel-concrete composite structure and the construction site conditions, select the position of the positioning device. Weld four steel sections 13 to the inner ring 11 and outer ring 12 of the first positioning ring 1. The angle ruler 15 is fixedly connected to the bottom of the inner ring 11 to observe the angle ruler 15 at any time to adjust the connection angle of the steel bars.

[0049] Step 2: Install positioning clamps 2 on inner ring 11 and outer ring 12. First, determine the approximate position of positioning clamps 2 according to the arrangement of the reinforcing bars. Install multiple sets of clamping rings 21 on inner ring 11 and outer ring 12 respectively. After the clamping rings 21 and limiting blocks 25 sink through the straight groove, bend the direction 90° and push the clamping rings 21 horizontally along the opening direction of the stepped groove. After adjustment, install screws 22 into the threaded holes of clamping rings 21. The distance between the screws 22 on both sides and the center of clamping rings 21 is the same. Weld square steel 26 to one side of screws 22. Subsequently, the distance between the square steel 26 on both sides needs to be adjusted by fastening nuts 1 23 and fastening nuts 24 to adapt to different diameter sizes of reinforcing bars.

[0050] Step 3: Reinforcing steel installation in concrete beams. In Step 2, one positioning clamp 2 is installed on both the inner ring 11 and the outer ring 12. A pair of positioning clamps 2 works together to fix one reinforcing steel bar. Two reinforcing bars positioned at a certain angle require two pairs of positioning clamps 2, and three bars require three pairs. The number of positioning clamps 2 is determined according to the number of reinforcing bars. Figure 1 As shown, two pairs of positioning clamps 2 control the angle positioning of two steel bars. The positions of the two pairs of positioning clamps 2 are determined according to the construction design drawings. Two concrete beam steel bars are selected to pass through the two pairs of positioning clamps 2, the fastening nuts are tightened, and the screw rods 22 are tightened to fix the position of the steel bars.

[0051] Step 4: Installation of the second positioning ring 4. The second positioning ring 4 includes an inner ring 11, an outer ring 12, and steel sections 13. Similar to the installation principle of the first positioning ring 1, four steel sections 13 are welded to the inner ring 11 and the outer ring 12 to form an integral frame. Then, the limiting block 25 at the upper end of the positioning clamp 2 is inserted into the straight groove and the stepped groove in sequence. Therefore, the second positioning ring 4 is connected to the first positioning ring 1 through the positioning clamp 2.

[0052] Assemble the support buckle 3. Beforehand, the male buckle 31 is hinged to the steel 13 in the first positioning ring 1 through the central shaft, and the female buckle 32 is fixedly connected to the steel 13 in the second positioning ring 4. While the positioning clamp 2 is assembled with the second positioning ring 4, the male buckle 31 is pushed into the slot of the female buckle 32. After the push is completed, the male buckle 31 is twisted 45° until the protrusion on the torsion fastener 33 is tightly engaged with the groove in the female buckle 32. The support buckle 3 is installed and the first positioning ring 1 and the second positioning ring 4 are connected as a whole through the support buckle 3.

[0053] Step 5: Installation of multi-layer positioning devices. When connecting the concrete beam to the steel column of the foundation, the reinforcement bars of the concrete beam need to be designed in multiple rows to ensure the stability of the steel-concrete composite structure. Furthermore, each row of concrete beam reinforcement bars needs to be bent twice to ensure smooth passage around the steel column of the foundation. Figure 8As shown, two sets of positioning devices are set in the horizontal and vertical directions respectively. Adjacent positioning devices are connected by support buckles 3, which can simultaneously adjust the angle and size positioning of the upper and lower layers of steel bars. In the horizontal direction, steel bar connections at multiple angles can be achieved.

[0054] Step Six: Adjusting the angle of the reinforcing bars. By observing the angle ruler 15 at the bottom, use the positioning clamp 2 to adjust the length and assembly angle of the reinforcing bars to meet the requirements of the construction design drawings and on-site use.

[0055] Step 7: Rebar welding. After the angle and length of the rebar are determined, the welder will carry out the welding operation of the two rebars on site. Additional lapped rebars can be added to ensure that the welding length meets the specification requirements.

[0056] Step 8: Removal of the positioning device. After the steel bar welding is completed, first remove the first positioning ring 1 and the second positioning ring 4. Release the restriction between the positioning rings by using the support buckle 3. Rotate the positioning ring so that the limit block 25 in the positioning clamp 2 slides out of the stepped groove and the straight groove in sequence, releasing the restriction of the mounting groove 14 on the positioning clamp 2. Finally, loosen the fastening nut and unscrew the half ring of the clamping ring 21 to release the restriction of the ring on the steel bar, and complete the disassembly work.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A positioning device for obliquely intersecting rebar operations, characterized in that: The device includes a first positioning ring, a positioning clamp, a support buckle, and a second positioning ring. Both the first and second positioning rings include an inner ring and an outer ring arranged concentrically. The inner ring is fixedly connected to the outer ring by a steel section. Both the inner and outer rings are provided with mounting grooves that match the positioning clamp. Multiple sets of positioning clamps are movably disposed in the mounting grooves. The second positioning ring is detachably connected to the first positioning ring by the support buckle. The positioning fixture includes a clamping ring, and a screw, a fastening nut one, and a fastening nut two symmetrically arranged on both sides of the clamping ring. The clamping ring has a threaded hole. The screw is threaded to the clamping ring. The fastening nut one and the fastening nut two are threaded to the screw and press against the inner and outer walls of the clamping ring, respectively. The clamping ring comprises multiple semi-rings that are hinged together, the free ends of the semi-rings are toothed, and the free ends of the multiple semi-rings mesh with each other. The clamping ring is equipped with a limiting block, and the mounting groove includes a straight groove and a stepped groove that are connected. The limiting block is inserted into the straight groove and is movably engaged with the stepped groove.

2. The positioning device for obliquely intersecting rebar operations according to claim 1, characterized in that: The first positioning ring also includes an angle gauge, which is fixedly connected to the inner ring.

3. A positioning device for obliquely intersecting rebar operations according to claim 2, characterized in that: The positioning fixture also includes square steel and D-shaped pads. The square steel is fixedly connected to the screw, and a set of opposite square steels inside the clamping ring abut against the reinforcing bars. The D-shaped pad has a through hole, and the screw is inserted into the through hole. The arc-shaped end of the D-shaped pad abuts against the inner wall of the clamping ring, and the flat end of the D-shaped pad abuts against the second fastening nut.

4. A positioning device for obliquely intersecting rebar operations according to claim 3, characterized in that: The support buckle includes a male buckle and a female buckle with a slot, and the male buckle is engaged with the female buckle by a torsion fastener.

5. A positioning device for obliquely intersecting rebar operations according to claim 4, characterized in that: The torsion fastener has a protrusion and a chamfer, and the female fastener has a groove that matches the protrusion.

6. A method for installing a positioning device for diagonally intersecting rebar operations, characterized in that: The steps for installing the positioning device according to claim 5 are as follows: Step 1: Based on the construction design drawings of the steel-concrete composite structure and the construction site conditions, measure and lay out the lines, and install the first positioning ring; Step 2: Installation of positioning clamps. Determine the approximate position of the positioning clamps based on the arrangement of the reinforcing bars. The positioning clamps are installed in pairs on the inner and outer rings of the first positioning ring, with the limiting blocks on the clamping ring passing through the straight groove and the stepped groove in sequence. Step 3: Installation of concrete beam reinforcement. One pair of positioning clamps supports one reinforcement bar. Adjust the distance between the square steel bars by tightening nuts one and two. Tighten the nuts to determine the position of the reinforcement bar. Two reinforcement bars set at a certain angle require two pairs of positioning clamps. Determine the position of the two pairs of positioning clamps according to the construction design drawings. Select two concrete beam reinforcement bars to pass through the two pairs of positioning clamps and tighten the bolts to fix them. Step 4: Install the second positioning ring. After the limiting blocks on the clamping ring pass through the straight groove and stepped groove of the second positioning ring in sequence, assemble and twist the locking support buckle. Step 5: Adjust the angle of the reinforcing bars. Observe the angle ruler and use positioning clamps to adjust the length and assembly angle of the reinforcing bars to meet the requirements of the construction design drawings and on-site use. Step Six: Rebar Welding. After the angle and length of the rebar are determined, the welder will carry out the welding operation of the two rebars on site. Step 7: After the positioning device is removed and the steel bars are welded, first release the support buckle from the positioning ring, rotate the positioning ring so that the limiting block passes through the stepped groove and the straight groove in sequence, release the installation groove from the positioning clamp, loosen the fastening nut, and unscrew the clamping ring to release the restriction on the steel bars.

7. The installation method of a positioning device for inclined cross-operation of reinforcing bars according to claim 6, characterized in that: After step four, the multi-layer positioning device is installed. In step four, multiple sets of positioning devices are set in the horizontal and vertical directions, and adjacent positioning rings are connected by support buckles.

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