Positioning device for oblique crossing operation of reinforcing steel bars and mounting method of positioning device

Abstract

The invention belongs to the technical field of building construction, and particularly relates to a positioning device for steel bar oblique crossing operation and an installation method thereof.The positioning device comprises a first positioning ring, a positioning clamp, a supporting buckle and a second positioning ring, the first positioning ring and the second positioning ring each comprise an inner ring and an outer ring which are concentrically arranged, and the inner rings are fixedly connected with the outer rings through profile steel; the inner ring and the outer ring are provided with mounting grooves matched with the positioning clamps, the positioning clamps are movably arranged in the mounting grooves, the second positioning ring is detachably connected with the first positioning ring through the supporting buckles, and the angle correction and positioning device has the beneficial effect that angle correction and positioning of reinforcing steel bars in steel-concrete composite structure construction are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a positioning device for oblique cross operation of steel bars and an installation method thereof. Background Art

[0002] With the rapid development of the construction industry and the acceleration of urbanization, the safety and durability of building structures are facing higher requirements. The steel-concrete composite structure that has emerged can give full play to the respective advantages of steel and concrete, and the reasonable combination has more excellent static and dynamic working performance. It can also save a lot of steel, reduce project costs, reduce environmental pollution and speed up construction progress. It is in line with the development direction of my country's building structure. When the concrete beam is connected to the steel column of the pedestal in the steel-concrete composite structure, the beam reinforcement should not pass through the flange of the steel column, and must not be directly welded to the steel section in the column. Therefore, the construction method of wrapping around the steel frame is often adopted.

[0003] The traditional construction method is that workers prefabricate and bend the steel bars according to the design drawings, and then connect and construct them with the steel columns of the pedestal. However, due to the limitations of the workers' processing level and the actual conditions on site, the design requirements of the prefabricated steel bars are too different from the actual installation position, resulting in the need for secondary processing of the steel bars on site, which affects the construction efficiency and the quality of concrete molding. Summary of the invention

[0004] The present invention is aimed at the above-mentioned problems and specifically designs a positioning device for oblique crossing of steel bars and an installation method thereof, so as to realize angle correction and positioning of steel bars in the construction of steel-concrete composite structures.

[0005] To achieve the above-mentioned purpose, the present invention provides a positioning device for oblique crossing operations of steel bars, comprising a first positioning ring, a positioning fixture, a supporting clip and a second positioning ring, the first positioning ring and the second positioning ring both comprising an inner ring and an outer ring arranged concentrically, the inner ring being fixedly connected to the outer ring by a steel section, the inner ring and the outer ring both being provided with mounting grooves matching the positioning fixture, the positioning clips having multiple groups, movably arranged in the mounting grooves, the second positioning ring being detachably connected to the first positioning ring by a supporting clip.

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

[0007] Furthermore, the positioning fixture includes a clamping ring, and a screw, a fastening nut 1 and a fastening nut 2 symmetrically arranged on both sides of the clamping ring, the clamping ring is provided with a threaded hole, the screw is threadedly connected to the clamping ring, the fastening nut 1 and the fastening nut 2 are threadedly connected to the screw, and are respectively crimped to the inner and outer walls of the clamping ring.

[0008] Furthermore, the clamping ring comprises a plurality of half rings hinged to each other, the free ends of the half rings are toothed, and the free ends of the plurality of half rings are meshed with each other.

[0009] Furthermore, the clamping ring is additionally provided with a limiting block, the mounting groove comprises a straight groove and a stepped groove which 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 square steel and D-shaped pads, the square steel is fixedly connected to the screw, and a group of opposite square steels in the clamping ring abut against the steel bar, the D-shaped pad is provided with a through hole, the screw is inserted into the through hole, the arc 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 fastening nut 2.

[0011] Furthermore, the supporting buckle includes a male buckle and a female buckle with a slot, and the male buckle is clamped to the female buckle by a twist fastener.

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

[0013] The present invention also includes a method for installing a positioning device for oblique cross-working of steel bars, comprising the following steps: 1) According to the construction design drawing of the steel-concrete composite structure and the construction site conditions, measure and lay out the lines and install the first positioning ring; 2) Installation of positioning fixtures: Determine the approximate position of the positioning fixtures according to the arrangement of the steel bars. The positioning fixtures are installed in pairs on the inner ring and the outer ring of the first positioning ring, and the limit blocks on the clamping ring pass through the straight groove and the stepped groove in sequence; 3) Installation of concrete beam reinforcement: a pair of positioning fixtures carries one reinforcement bar. The distance between the square steel bars is adjusted by tightening nuts 1 and 2. Tightening the tightening nuts determines the position of the reinforcement bar. Two reinforcement bars set at a certain angle require two pairs of positioning fixtures. Determine the positions of the two pairs of positioning fixtures according to the construction design drawings. Select two concrete beam reinforcement bars to pass through the two pairs of positioning fixtures and tighten the screws to fix them. 4) Install the second positioning ring. After the limit block on the clamping ring passes through the straight groove and stepped groove of the second positioning ring in sequence, assemble and twist to lock the support buckle; 5) After step 4, the installation of multi-layer positioning devices, in which multiple groups of positioning devices are respectively arranged in the horizontal and vertical directions of the positioning device in step 4, and adjacent positioning rings are connected by supporting buckles; 6) Adjust the steel bar angle, observe the angle ruler, and use the positioning fixture to adjust the steel bar length and assembly angle in accordance with the construction design drawing and on-site use requirements; 7) Steel bar welding: After the steel bar angle and length positioning are completed, the welder will carry out the welding operation of two steel bars on site; 8) After the positioning device is removed and the steel bar welding is completed, first release the restriction of the support buckle on the positioning ring, rotate the positioning ring, so that the limit block passes through the step groove and the straight groove in sequence, release the restriction of the installation groove on the positioning fixture, loosen the fastening nut, and unscrew the clamping ring to release the restriction on the steel bar.

[0014] In summary, the present invention has the following advantages and beneficial technical effects: 1. The present invention provides a first positioning ring, a positioning fixture and a second positioning ring. The components are used in combination to meet the reinforcement of steel bars in different design scenarios and combination forms. The traditional construction method needs to continuously adjust and correct the bending curvature of the steel bars according to the actual needs of the site, which greatly wastes manpower and material resources. The positioning device of the present invention can make the steel bar arrangement more in line with the site needs, reduce the error and rework of steel bar assembly during construction, improve construction efficiency and quality, simplify the construction process to a certain extent, reduce the difficulty and complexity of construction, and the positioning device in the present invention is suitable for the cross-operation construction of multi-layer and multi-angle steel bars.

[0015] 2. In the present invention, multiple groups of parts are detachable, which is convenient for recycling, reduces unnecessary material consumption, and saves construction costs; and the device materials mostly use steel structures, which have certain strength and durability, and have a high structural bearing capacity, which helps to reduce economic losses caused by damage to the device structure and extend the service life of the device.

[0016] 3. The first positioning ring and the second positioning ring in the present invention are welded into an integral frame with the inner and outer rings by means of steel sections, thereby enhancing the strength and supporting performance of the components; the setting of the angle ruler makes it convenient for workers to observe and adjust the connection angle of the steel bars at any time, and the structure is integrated to improve the construction efficiency; the positioning fixture adjusts the cross angle of the steel bars in accordance with the on-site construction conditions and design requirements based on sliding in the installation groove, and the screw rod cooperates with the fastening nut to fix the position of the steel bars; the half-ring design in the clamping ring can quickly remove the restriction of the clamping ring on the steel bars by unscrewing the half-ring, thereby saving disassembly time, and the toothed edge design in the half-ring prevents the risk of axial disengagement of the clamping ring after being compressed, thereby improving the structural stability; the setting of the square steel increases the contact area with the steel bars and improves the clamping stability; the setting of the D-type pad evenly distributes the compressive stress of the two fastening nuts on the clamping ring, thereby avoiding stress concentration affecting the structural strength of the clamping ring.

[0017] 4. The supporting buckle in the present invention is used to connect the first positioning ring and the second positioning ring, and the adjacent positioning devices in the horizontal or vertical direction. The setting of the torsion fastener prevents the axial disjoint between the male buckle and the female buckle, thereby improving the connection strength of the parts. The setting of the protrusion is used for radial locking of the male and female buckles, thereby further improving the stability of the parts. The chamfered design reduces sharp edges to prevent scratches on workers and the female buckle, and the bevel is cut to better achieve a smooth transition. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a three-dimensional schematic diagram of a single positioning device of the present invention; Figure 2 is a schematic front view of a single positioning device of the present invention; Figure 3 is a schematic top view of a single positioning device of the present invention; Figure 4 It is a three-dimensional schematic diagram of the positioning fixture in the present invention; Figure 5 It is a schematic diagram of the installation of the positioning fixture in the present invention; Figure 6 is a three-dimensional perspective view of the support buckle in the present invention; Figure 7 is a perspective view of the use of the support buckle in the present invention; Figure 8 It is a three-dimensional schematic diagram of the multi-layer positioning device of the present invention.

[0019] The reference numerals in the accompanying drawings are: 1. First positioning ring; 11. Inner ring; 12. Outer ring; 13. Steel section; 14. Mounting groove; 15. Angle ruler; 2. Positioning fixture; 21. Clamping ring; 22. Screw; 23. Fastening nut 1; 24. Fastening nut 2; 25. Limit block; 26. Square steel; 27. Spacer; 3. Support buckle; 31. Male buckle; 32. Female buckle; 33. Twist fastener; 4. Second positioning ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the implementation of the present invention clearer, the technical solution in the embodiment of the present invention will be described in more detail below in conjunction with the drawings in the embodiment of the present invention. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions; the described embodiments are part of the embodiments of the present invention, not all of the embodiments; the embodiments and directional terms described below with reference to the drawings are exemplary and intended to be used to explain the present invention, and cannot be understood as limitations on the present invention; based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The embodiments of the present invention are described in detail below in conjunction with the drawings: The following is combined with Figure 1-Figure 8 The present invention is described in further detail: Embodiment 1 like Figure 1-Figure 3 As shown, the present embodiment discloses a positioning device for oblique cross operation of steel bars, comprising a first positioning ring 1, a positioning fixture 2, a supporting 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, and both comprise a concentrically arranged inner ring 11 and an outer ring 12. The inner ring 11 is fixedly connected to the outer ring 12 on the same horizontal plane through 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. The inner ring 11 and the outer ring 12 are both provided with a mounting groove 14 matching the positioning fixture 2. The positioning fixture 2 has multiple groups, and the end face where the clamping port is located is longitudinally arranged. The positioning fixture 2 is movably clamped 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 through the supporting buckle 3; the first positioning ring 1 also comprises a 360° horizontal angle ruler 15, and the angle ruler 15 is fixedly arranged at the bottom of the inner ring 11 in the first positioning ring 1.

[0021] like Figure 4-Figure 5As shown, the positioning fixture 2 includes a clamping ring 21, and a screw rod 22, a fastening nut 1 23 and a fastening nut 24 symmetrically arranged on both sides of the clamping ring 21. The axial direction of the clamping ring 21 is perpendicular to the central axial direction of the first positioning ring 1. The clamping ring 21 is provided with a pair of threaded holes, and the screw rod 22 is threadedly connected to the clamping ring 21 through the threaded holes. The fastening nut 1 23 and the fastening nut 24 are threadedly connected to the screw rod 22. After tightening, the inner and outer walls of the clamping ring 21 are respectively crimped; the clamping ring 21 includes two half rings hinged to each other around a hinge axis, and the free ends of the half rings opposite to the hinge axis are toothed, and the free ends of the two half rings are meshed with each other; a limited The positioning block 25 and the mounting groove 14 include a connected straight groove and a stepped groove, the opening directions of the two are perpendicular, the straight groove opening is located in the vertical direction, the stepped groove is arranged in a circumferential direction, and the opening is in the horizontal plane. After the limit block 25 is inserted into the straight groove, the stepped groove is movably clamped; the positioning fixture 2 also includes square steel 26 and 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 group of opposite square steels 26 in the clamping ring 21 abut against the same steel bar. The D-shaped pad 27 is provided with a through hole, and the screw 22 is inserted into the through hole. The arc end of the D-shaped pad 27 matches the curvature 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.

[0022] like Figure 6-Figure 7 As shown, the support buckle 3 includes a male buckle 31 and a female buckle 32 with a slot, and the male buckle 31 is clamped to the female buckle 32 through a twist fastener 33; the twist fastener 33 is provided with a protrusion and a chamfer, and the slot of the female buckle 32 is provided with a groove matching the protrusion.

[0023] Embodiment 2 The installation method of a positioning device for oblique cross-working of steel bars of the present invention is as follows: Step 1: Install the first positioning ring 1, measure and lay out, select the position of the positioning device according to the construction design drawing of the steel-concrete composite structure and the construction site conditions, weld four steel sections 13 with the inner ring 11 and the outer ring 12 of the first positioning ring 1, and fix the angle ruler 15 with the bottom of the inner ring 11 to observe the angle ruler 15 at any time to adjust the connection angle of the steel bar; Step 2: Install the positioning fixture 2 on the inner ring 11 and the outer ring 12. First, determine the approximate position of the positioning fixture 2 according to the arrangement of the steel bars, and install multiple sets of clamping rings 21 on the inner ring 11 and the outer ring 12 respectively. After the clamping ring 21 and the limit block 25 sink through the straight groove, bend the direction by 90°, and push the clamping ring 21 horizontally along the opening direction of the step groove. After adjustment, install the screw 22 into the threaded hole of the clamping ring 21. The screws 22 on both sides are at the same distance from the center of the clamping ring 21. Weld the square steel 26 to one side of the screw 22. Later, it is necessary to adjust the distance between the square steels 26 on both sides by tightening the nut 1 23 and the nut 2 24 to adapt to the diameter of different steel bars. Step 3: Installation of concrete beam reinforcement. In step 2, a positioning fixture 2 is set on the inner ring 11 and the outer ring 12 respectively. A pair of positioning fixtures 2 cooperates to fix a reinforcement. Two pairs of positioning fixtures 2 are required to install two reinforcements set at a certain angle, and three pairs are required to install three reinforcements. The number of positioning fixtures 2 is set according to the number of reinforcements, such as Figure 1 As shown, two pairs of positioning fixtures 2 are used to control the angle positioning of two steel bars. The positions of the two pairs of positioning fixtures 2 are determined according to the construction design drawings. Two concrete beam steel bars are selected to pass through the two pairs of positioning fixtures 2. The fastening nuts are tightened and the screws 22 are tightened to fix the positions of the steel bars. Step 4: Install the second positioning ring 4. The second positioning ring 4 includes an inner ring 11, an outer ring 12 and a steel section 13. The installation principle is similar to that of the first positioning ring 1. Four steel sections 13 are welded with the inner ring 11 and the outer ring 12 to form an integral frame. Then, the limit block 25 at the upper end of the positioning fixture 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 fixture 2. Assemble the support buckle 3, pre-hinging the male buckle 31 with the steel 13 in the first positioning ring 1 through the central axis, and fixing the female buckle 32 with the steel 13 in the second positioning ring 4. While the positioning fixture 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 pushing is completed, the male buckle 31 is twisted 45° until the protrusion on the twisting fastener 33 is tightly combined 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. Step 5: Multi-layer positioning device installation. When the concrete beam is connected to the steel column of the pedestal, the concrete beam reinforcement needs to be designed into multiple rows to ensure the stability of the steel-concrete composite structure, and the single-row concrete beam reinforcement needs to be bent twice to ensure smooth bypassing of the steel column of the pedestal. Figure 8 As shown, two sets of positioning devices are provided in the horizontal and vertical directions respectively, and the 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, and can realize multi-angle steel bar connection in the horizontal direction; Step 6: Adjust the steel bar angle. By observing the angle ruler 15 at the bottom, use the positioning fixture 2 to adjust the steel bar length and assembly angle that meet the construction design drawing and on-site use requirements; Step 7: Steel bar welding. After the steel bar angle and length are positioned, the welder will weld two steel bars on site. The overlapping steel bars can be added to ensure that the welding length meets the specification requirements. Step 8: Remove 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 through the support buckle 3, rotate the positioning rings, so that the limit block 25 in the positioning fixture 2 slides out of the stepped groove and the straight groove in sequence, and releases the restriction of the mounting groove 14 on the positioning fixture 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.

[0024] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A positioning device for oblique cross-working of steel bars, characterized in that: It includes 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 include an inner ring and an outer ring arranged concentrically. The inner ring is fixedly connected to the outer ring by a steel section. The inner ring and the outer ring are both provided with mounting grooves matching the positioning fixture. The positioning clips have multiple groups and are movably arranged in the mounting grooves. The second positioning ring is detachably connected to the first positioning ring by a supporting buckle.

2. A positioning device for oblique cross-working of steel bars according to claim 1, characterized in that: The first positioning ring also includes an angle ruler, and the angle ruler is fixedly connected to the inner ring.

3. A positioning device for oblique cross-working of steel bars according to claim 2, characterized in that: The positioning fixture includes a clamping ring, and a screw, a fastening nut 1 and a fastening nut 2 symmetrically arranged on both sides of the clamping ring. The clamping ring is provided with a threaded hole, the screw is threadedly connected to the clamping ring, and the fastening nut 1 and the fastening nut 2 are threadedly connected to the screw, and are respectively crimped onto the inner and outer walls of the clamping ring.

4. A positioning device for oblique cross-working of steel bars according to claim 3, characterized in that: The clamping ring comprises a plurality of half rings hinged to each other, the free ends of the half rings are toothed, and the free ends of the plurality of half rings are meshed with each other.

5. A positioning device for oblique cross-working of steel bars according to claim 4, characterized in that: The clamping ring is additionally provided with a limiting block, the mounting groove comprises a straight groove and a stepped groove which are connected, the limiting block is inserted into the straight groove, and is movably engaged with the stepped groove.

6. A positioning device for oblique cross-working of steel bars according to claim 5, characterized in that: The positioning fixture also includes square steel and D-shaped pads. The square steel is fixedly connected to the screw rod, and a group of opposite square steels in the clamping ring abut against the steel bar. The D-shaped pad is provided with a through hole, in which the screw rod is inserted. The arc 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.

7. A positioning device for oblique cross-working of steel bars according to claim 6, characterized in that: The supporting buckle comprises a male buckle and a female buckle with a slot, and the male buckle is clamped with the female buckle by a twist fastener.

8. A positioning device for oblique cross-working of steel bars according to claim 7, characterized in that: The torsion fastener is provided with a protrusion and a chamfer, and the female buckle is provided with a groove matching the protrusion.

9. A method for installing a positioning device for oblique cross-working of steel bars, characterized in that: The steps of installing the positioning device according to claim 8 are: Step 1: According to the construction design drawing 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: Install the positioning fixtures. Determine the approximate position of the positioning fixtures according to the arrangement of the steel bars. The positioning fixtures are installed in pairs on the inner ring and the outer ring of the first positioning ring, wherein the limit blocks on the clamping ring pass through the straight groove and the stepped groove in sequence. Step 3: Install the concrete beam reinforcement. A pair of positioning fixtures carries a reinforcement. The distance between the square steel bars is adjusted by tightening nuts 1 and 2. Tightening the tightening nuts determines the position of the reinforcement. Two pairs of positioning fixtures are required for two reinforcements set at a certain angle. The positions of the two pairs of positioning fixtures are determined according to the construction design drawings. Two concrete beam reinforcements are selected to pass through the two pairs of positioning fixtures and tighten the screws to fix them. Step 4: Install the second positioning ring. After the limit block on the clamping ring passes through the straight groove and the stepped groove of the second positioning ring in sequence, assemble and twist to lock the support buckle; Step 5: Adjust the steel bar angle, observe the angle ruler, and use the positioning fixture to adjust the steel bar length and assembly angle in accordance with the construction design and on-site use requirements; Step 6: Steel bar welding. After the steel bar angle and length are positioned, the welder will weld two steel bars on site; Step 7: After the positioning device is removed and the steel bar welding is completed, first release the restriction of the support buckle on the positioning ring, rotate the positioning ring, so that the limit block passes through the step groove and the straight groove in sequence, release the restriction of the installation groove on the positioning fixture, loosen the fastening nut, and unscrew the clamping ring to release the restriction on the steel bar.

10. The method for installing a positioning device for oblique cross-working of steel bars according to claim 9, characterized in that: After step 4, a multi-layer positioning device is installed. In step 4, multiple groups of positioning devices are respectively arranged in the horizontal and vertical directions of the positioning device, and adjacent positioning rings are connected by supporting buckles.

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