Steel beam double-side construction positioning tool

Abstract

The present application relates to the technical field of building construction, and discloses a steel beam double-side construction positioning tool, which comprises a base, two guide adjusting assemblies and two laser positioning assemblies, the base is suitable for being attached to the lower surface of the lower flange of the steel beam, and the extension direction of the base is perpendicular to the extension direction of the steel beam; the two guide adjusting assemblies are spaced apart along the extension direction of the base and are slidingly arranged on the base, and are suitable for abutting against the two side surfaces of the lower flange of the steel beam respectively; the two laser positioning assemblies are symmetrically arranged on the two guide adjusting assemblies with the center surface of the web of the steel beam as the plane of symmetry, the laser positioning assembly is used for projecting a laser fan onto the surface of the web of the steel beam, and the laser fans on the two sides of the web of the steel beam are symmetric with respect to the center surface of the web of the steel beam. The present application can provide corresponding positioning references for the construction on the two sides of the web of the steel beam under the condition that the web of the steel beam blocks the line of sight, avoid repeated measurement and size transfer, and reduce manual positioning deviation.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a double-sided construction positioning fixture for steel beams. Background Technology

[0002] During the reinforcement, renovation, or addition of joints to existing steel structure buildings, it is often necessary to install connecting plates, stiffening ribs, supporting members, or hanging joints on both sides of the steel beam web. To ensure the balanced stress and accurate installation position of the members on both sides of the steel beam, it is usually required that the members on both sides be symmetrically arranged relative to the steel beam web.

[0003] However, the web of the steel beam can obstruct the view of construction workers, making it difficult for them to directly observe the construction position on one side of the web. Current construction methods typically involve measuring with tape measures, transferring dimensions between the two sides of the web, or creating positioning templates to determine the component's installation position. This not only requires repeated measurements and checks but is also prone to positioning deviations due to inconsistent measurement benchmarks on both sides, human reading errors, and template placement misalignment. Especially in construction environments at height or with limited working space, repeated measurements and adjustments further increase the difficulty of construction. Summary of the Invention

[0004] This invention provides a double-sided construction positioning fixture for steel beams to solve the problem of inaccurate construction positioning on both sides of the web of steel beams.

[0005] This invention provides a double-sided construction positioning fixture for steel beams, comprising: A base is adapted to fit against the lower surface of the lower flange of a steel beam, and the extension direction of the base is perpendicular to the extension direction of the steel beam; Two guide adjustment components are spaced apart and slidably disposed on the base along the extension direction of the base, and are respectively adapted to abut against the two sides of the lower flange of the steel beam; Two laser positioning components are symmetrically arranged on the two guiding adjustment components with the center plane of the steel beam web as the plane of symmetry. The laser positioning components are used to project laser fan-shaped surfaces onto the surface of the steel beam web, and the laser fan-shaped surfaces on both sides of the steel beam web are symmetrical with respect to the center plane of the steel beam web.

[0006] Beneficial effects: The base fits snugly against the lower flange of the steel beam, and two guide adjustment components abut against the two opposite sides of the lower flange respectively. This allows the two laser positioning components to be arranged symmetrically with the center plane of the steel beam web as the symmetrical plane, and the projection positions and directions of the two laser positioning components correspond to each other. The laser fan-shaped surfaces projected by the two laser positioning components intersect with the two opposite sides of the web respectively, forming a positioning line on the two surfaces with the center plane of the steel beam web as the symmetrical plane. Workers do not need to measure and transfer dimensions on both sides of the web separately, solving the problem of inaccurate alignment of the construction positions on both sides of the web caused by the steel beam web obstructing the line of sight.

[0007] In one optional embodiment, the laser positioning component includes a positioning plate and a laser projection module, wherein the positioning plate is disposed at the top of the guide adjustment component, and the laser projection module is disposed on the positioning plate.

[0008] In one alternative embodiment, the surface of the positioning plate is perpendicular to the top surface of the base.

[0009] In one optional embodiment, the laser positioning assembly further includes an angle adjustment component disposed between the positioning plate and the laser projection module, which is adapted to adjust the setting angle of the laser projection module relative to the positioning plate.

[0010] In one alternative embodiment, the guide adjustment assembly includes a slider that is slidably fitted onto the base and is movable along the extension direction of the base.

[0011] In one alternative embodiment, limiting plates are respectively provided on opposite sides of the two sliders, and the two limiting plates abut against the two sides of the lower flange of the steel beam along the width direction.

[0012] In one alternative embodiment, the bottom end of the slider is provided with a plurality of locking members, which are adapted to releasably lock the slider onto the base.

[0013] In one optional embodiment, a plurality of magnetic attractors are spaced apart on the top surface of the base, and the plurality of magnetic attractors are adapted to adhere to the lower surface of the lower flange of the steel beam to fix the base to the lower flange of the steel beam.

[0014] In one alternative embodiment, the outer periphery of the magnetic attractor is fitted with an anti-slip buffer sleeve.

[0015] In one optional embodiment, limit baffles are provided at both ends of the base. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the installation of a double-sided construction positioning fixture for steel beams according to an embodiment of the present invention; Figure 2 This is a top view of the installation of a double-sided construction positioning fixture for steel beams according to an embodiment of the present invention; Figure 3 This is an installation side view of a double-sided construction positioning fixture for steel beams according to an embodiment of the present invention; Figure 4 This is a structural schematic diagram of a double-sided construction positioning fixture for steel beams according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Base; 11. Magnetic suction component; 12. Limiting baffle; 2. Steel beams; 31. Slider; 32. Limiting plate; 41. Positioning plate; 42. Laser projection module; 43. Laser fan. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The following is combined with Figures 1 to 4 The following describes embodiments of the present invention.

[0021] According to an embodiment of the present invention, a double-sided construction positioning fixture for a steel beam is provided, comprising: a base 1, two guide adjustment components and two laser positioning components. The base 1 is adapted to fit against the lower surface of the lower flange of the steel beam 2, and the extension direction of the base 1 is perpendicular to the extension direction of the steel beam 2. The two guide adjustment components are spaced apart and slidably disposed on the base 1 along the extension direction of the base 1, and are respectively adapted to abut against the two sides of the lower flange of the steel beam 2. The two laser positioning components are symmetrically disposed on the two guide adjustment components with the central plane of the web of the steel beam 2 as the plane of symmetry. The laser positioning components are used to project laser fan-shaped surfaces 43 onto the surface of the web of the steel beam 2, and the laser fan-shaped surfaces 43 on both sides of the web of the steel beam 2 are symmetrical with respect to the central plane of the web of the steel beam 2.

[0022] The base 1 is a load-bearing structure extending along the width direction of the lower flange of the steel beam 2, with its length direction consistent with the width direction of the lower flange. During installation, the base 1 is fitted against the lower surface of the lower flange, and two guide adjustment components are spaced apart on the base 1. The steel beam 2 is located between the two guide adjustment components. The guide adjustment components can move along the length direction of the base 1 to adjust the distance between the two guide adjustment components, accommodating lower flanges of steel beam 2 with different widths.

[0023] Two laser positioning components are located on either side of the web of steel beam 2. The center plane of the web of steel beam 2 refers to the plane located between the two opposing surfaces of the web, parallel to the two opposing surfaces, and equidistant from them. The two laser positioning components are symmetrically arranged with respect to this center plane, so that the installation positions and projection directions of the two laser positioning components correspond to each other. During positioning, the two laser positioning components project laser fan-shaped surfaces 43 towards the corresponding side of the web. The two laser fan-shaped surfaces 43 intersect the two opposing surfaces of the web, forming positioning lines on the corresponding surfaces. The two positioning lines correspond to each other because when one positioning line is projected onto the other surface in a direction perpendicular to the center plane of the web, its position coincides with the other positioning line. Construction personnel can determine the installation positions of the components on both sides of the web based on the two positioning lines, without having to repeatedly measure or transfer dimensions across the web.

[0024] In this embodiment, the base 1 and the positioning plate 41 are made of lightweight metal or non-metal composite materials with a density of less than 5 g / cm³. The lightweight metal can be aluminum alloy or magnesium alloy, and the non-metal composite material can be carbon fiber composite material. The base 1 and the positioning plate 41 may also be provided with reinforcing rib structures and / or hollow weight-reducing structures to reduce the overall weight of the positioning fixture while ensuring structural rigidity, facilitating high-altitude carrying, installation, and disassembly.

[0025] In one embodiment, the guide adjustment component includes a slider 31, which is slidably sleeved on the base 1 and is capable of moving along the extension direction of the base 1.

[0026] Specifically, two sliders 31 are arranged at intervals along the length of the base 1. The sliders 31 are fitted around the outer periphery of the base 1, and their inner walls slide against the outer surface of the base 1, allowing the sliders 31 to reciprocate relative to the base 1 along its length. The operator can push the two sliders 31 towards or away from each other to adjust the distance between them until the two limiting plates 32 abut against the two opposite sides of the lower flange of the steel beam 2. During the movement of the sliders 31, the laser positioning components located at the top of the sliders 31 move synchronously with them, enabling the positioning fixture to adapt to the lower flanges of the steel beam 2 of different widths and determining the positions of the two laser positioning components relative to the steel beam 2.

[0027] In one embodiment, a limiting plate 32 is provided on the opposite side of the two sliders 31, and the two limiting plates 32 abut against the two sides of the lower flange of the steel beam 2 along the width direction.

[0028] Specifically, two limiting plates 32 are respectively disposed on opposite sides of the two sliders 31. The limiting plates 32 are perpendicular to the sliders 31 and can move synchronously with the corresponding sliders 31 along the length direction of the base 1. The two opposite surfaces of the two limiting plates 32 are respectively attached to and abut against the two sides of the lower flange of the steel beam 2 along the width direction. Using the two sides of the lower flange of the steel beam 2 as positioning references, the installation position and attitude of the positioning fixture relative to the steel beam 2 are corrected, so that the two laser positioning components are respectively positioned at corresponding positions on both sides of the web of the steel beam 2.

[0029] In this embodiment, wear-resistant non-metallic pads are respectively provided on the opposing surfaces of the two limiting plates 32. These pads are used to abut against the sides of the lower flange of the steel beam 2. The hardness of the wear-resistant non-metallic pads is lower than that of the steel beam 2 to prevent the limiting plates 32 from scratching the lower flange of the steel beam 2 and its anti-corrosion coating during contact and adjustment. The wear-resistant non-metallic pads can be made of high-polymer wear-resistant nylon material and are installed on the limiting plates 32 by embedding, bonding, or fastening.

[0030] In one embodiment, the bottom end of the slider 31 is provided with a plurality of locking members, which are adapted to releasably lock the slider 31 onto the base 1.

[0031] Specifically, multiple locking elements are spaced apart at the bottom end of each slider 31, and can be spaced apart along the length of the slider 31 or arranged in an array. In this embodiment, the locking element is a set screw, and the bottom end of the slider 31 has a threaded hole that mates with the set screw. The set screw passes through the threaded hole, with its inner end facing the base 1. After the slider 31 moves to the set position, the set screw is tightened, so that the inner end of the set screw abuts against the base 1, thereby restricting the movement of the slider 31 along the length of the base 1. When readjustment is required, the set screw is loosened in the opposite direction, so that the set screw releases its abutment against the base 1, and the sliding state of the slider 31 is restored. Multiple set screws can lock the slider 31 at multiple points, reducing the displacement of the slider 31 during construction.

[0032] In other embodiments, the locking element may also employ a snap-fit ​​or pin structure. When the locking element is in the locked state, it engages with the base 1 to limit the movement of the slider 31; after the locking element is released from the limiting engagement with the base 1, the slider 31 can move again along the length direction of the base 1.

[0033] In one embodiment, a plurality of magnetic attractors 11 are spaced apart on the top surface of the base 1. The plurality of magnetic attractors 11 are adapted to adhere to the lower surface of the lower flange of the steel beam 2 so as to fix the base 1 to the lower flange of the steel beam 2.

[0034] Specifically, the magnetic attractor 11 can be made of high-temperature resistant neodymium iron boron permanent magnet. Multiple magnetic attractor holes are arrayed at intervals along the length of the base 1 on its top surface, with one magnetic attractor 11 installed in each hole. During installation, the top surface of the base 1 is placed close to the lower surface of the lower flange of the steel beam 2. The multiple magnetic attractors 11 magnetically engage with the lower flange of the steel beam 2, keeping the base 1 in contact with the lower surface of the lower flange of the steel beam 2. This magnetic fixing method eliminates the need for welding or drilling on the steel beam 2, enabling temporary installation of the positioning fixture. After positioning, an external force is applied to the base 1 to overcome the magnetic attraction, allowing the positioning fixture to be removed from the lower flange of the steel beam 2 for reuse.

[0035] The slider 31 and the limiting plate 32 can be made of non-magnetic materials such as aluminum alloy or non-metallic composite materials, so that the slider 31 and the limiting plate 32 will not be magnetically attracted to the magnetic attractant 11, thus avoiding the magnetic attraction force generated by the magnetic attractant 11 from interfering with the movement and adjustment of the slider 31.

[0036] In one embodiment, the magnetic suction member 11 is provided with an anti-slip buffer sleeve on its outer periphery.

[0037] Specifically, the anti-slip buffer sleeve can be made of rubber and is ring-shaped and fitted around the outer periphery of each magnetic component 11. The top surface of the anti-slip buffer sleeve is 0.2mm to 0.5mm higher than the top surface of the magnetic component 11, preferably 0.3mm higher. When the base 1 is attached to the lower flange of the steel beam 2, the anti-slip buffer sleeve contacts the lower surface of the lower flange of the steel beam 2 before the magnetic component 11 and undergoes elastic deformation, thereby preventing the magnetic component 11 from directly colliding with the surface of the steel beam 2 and reducing wear on the anti-corrosion coating of the steel beam 2. At the same time, the anti-slip buffer sleeve can increase the friction between the base 1 and the lower flange of the steel beam 2 and buffer the vibration generated during construction, preventing the base 1 from slipping relative to the lower flange of the steel beam 2.

[0038] In one embodiment, limit baffles 12 are respectively provided at both ends of the base 1.

[0039] Specifically, two limiting baffles 12 are respectively disposed at the two ends of the base 1 along its length, and two guide adjustment components are located between the two limiting baffles 12. When the guide adjustment component moves along the length of the base 1 to the end of the base 1, the guide adjustment component abuts against the corresponding limiting baffle 12, limiting the maximum range of movement of the guide adjustment component and preventing the guide adjustment component from dislodging from the end of the base 1, while not affecting the inward movement and adjustment of the guide adjustment component along the base 1.

[0040] In one embodiment, the laser positioning assembly includes a positioning plate 41 and a laser projection module 42. The positioning plate 41 is disposed on the top of the guide adjustment assembly, and the laser projection module 42 is disposed on the positioning plate 41.

[0041] Specifically, each slider 31 has a positioning plate 41 at its top. The two positioning plates 41 are located on opposite sides of the web of the steel beam 2 and can move synchronously with the corresponding slider 31. The positioning plates 41 provide installation positions for the laser projection modules 42, positioning them at corresponding positions on opposite sides of the web of the steel beam 2. In this embodiment, the laser projection module 42 is a linear laser projection module, with its light-emitting side facing the corresponding web surface of the steel beam 2. After the laser projection module 42 is activated, it projects a laser fan 43 onto the corresponding web surface of the steel beam 2. The laser fan 43 intersects with the web surface of the steel beam 2, forming a linear light trail, which serves as a positioning reference for the construction positions on both sides of the steel beam 2. The surface of the positioning plate 41 is also perpendicular to the center plane of the web of the steel beam 2, providing an installation reference for the projection direction of the laser fan 43.

[0042] The laser projection module 42 can use a 520nm green line laser module. The laser projection module 42 has a built-in rechargeable lithium battery and features both constant-on and pulsed-on modes. Construction personnel can select the appropriate mode based on the site lighting conditions; in strong outdoor light environments, the pulsed-on mode can be selected to improve the visibility of the positioning line.

[0043] The light output end face of the laser projection module 42 is flush with or slightly protrudes from the surface of the positioning plate 41 to reduce the obstruction of the laser fan 43 by the positioning plate 41. After the laser projection module 42 is installed, the parallelism between the laser fan 43 and the surface of the positioning plate 41 can be calibrated at the factory or on the construction site using a reference block.

[0044] In one embodiment, the surface of the positioning plate 41 is perpendicular to the top surface of the base 1.

[0045] Specifically, the positioning plate 41 is set perpendicular to the top surface of the slider 31, and both surfaces of the positioning plate 41 are perpendicular to the top surface of the base 1. When the top surface of the base 1 is in contact with the lower surface of the lower flange of the steel beam 2, the surface of the positioning plate 41 is perpendicular to the lower surface of the lower flange of the steel beam 2. Through the perpendicular setting relationship between the positioning plate 41 and the base 1, a stable installation reference can be provided for the laser projection module 42, so that the two laser projection modules 42 maintain a corresponding installation posture relative to the base 1, which is beneficial for the laser fan 43 to form a position-corresponding positioning line on the two opposite plates of the web of the steel beam 2.

[0046] In one embodiment, the laser positioning assembly further includes an angle adjustment component, which is disposed between the positioning plate 41 and the laser projection module 42 and is adapted to adjust the setting angle of the laser projection module 42 relative to the positioning plate 41.

[0047] Specifically, in this embodiment, the angle adjustment component is a universal adjustment bracket, which is mounted on the positioning plate 41, and the laser projection module 42 is mounted on the universal adjustment bracket. The universal adjustment bracket can drive the laser projection module 42 to rotate relative to the positioning plate 41, so as to adjust the light output direction of the laser projection module 42 and the projection angle of the laser fan 43.

[0048] The universal adjustment bracket is equipped with an angle locking knob. During adjustment, loosen the angle locking knob and rotate the laser projection module 42 according to the linear light trace formed on the web of the steel beam 2, so that the laser fan 43 is parallel to the surface of the positioning plate 41 and the positioning lines formed by the two laser projection modules 42 correspond to each other; after adjustment, tighten the angle locking knob to lock the setting angle of the laser projection module 42 relative to the positioning plate 41, so as to prevent the laser projection direction from deviating during construction.

[0049] Usage process and beneficial effects: Clean the lower surface of the lower flange of steel beam 2 and the area to be marked on the web of steel beam 2, removing loose rust, oil and welding slag to ensure reliable adsorption of magnetic 11 and clear visibility of the linear light trace formed by the laser.

[0050] The base 1 is attached to the lower surface of the lower flange of the steel beam 2, and the base 1 is temporarily attached to the lower flange of the steel beam 2 using multiple magnetic attachments 11.

[0051] Push the two sliders 31 along the length of the base 1 so that the two limiting plates 32 respectively abut against the two opposite sides of the lower flange of the steel beam 2 along the width direction; after abutting, lock the two sliders 31 onto the base 1 by multiple locking parts.

[0052] Two laser projection modules 42 are activated, and either a constant-on or pulsed-on mode is selected based on the ambient lighting conditions. The two laser projection modules 42 project laser fan-shaped patterns 43 onto the two opposing surfaces of the web of the steel beam 2, forming corresponding positioning lines on each surface. Construction workers then use a chalk or center punch to mark the web of the steel beam 2 along these positioning lines.

[0053] After marking is completed, an external force to overcome magnetic attraction is applied to the base 1, and the positioning fixture is removed from the lower flange of the steel beam 2; then, drilling, welding or bolting construction is carried out according to the construction marks left on the two back plates of the web of the steel beam 2.

[0054] Multiple magnetic attachments 11 can temporarily fix the base 1 to the lower flange of the steel beam 2 without welding or drilling on the steel beam 2; the anti-slip buffer sleeve and wear-resistant non-metallic pad can improve the anti-slip stability of the positioning fixture and reduce damage to the anti-corrosion coating of the steel beam 2; the lightweight materials and weight-reducing structure facilitate the carrying and operation of the positioning fixture in high-altitude environments; the laser projection module 42 with different light emission modes can adapt to different on-site lighting conditions. The positioning fixture can be removed after the positioning marking is completed, without occupying the construction space under the steel beam 2 for a long time, and without hindering subsequent drilling, welding or bolting operations.

[0055] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A double-sided construction positioning fixture for steel beams, characterized in that, include: The base (1) is adapted to fit against the lower surface of the lower flange of the steel beam (2), and the extension direction of the base (1) is perpendicular to the extension direction of the steel beam (2); Two guide adjustment components are spaced apart and slidably disposed on the base (1) along the extension direction of the base (1), and are respectively adapted to abut against the two sides of the lower flange of the steel beam (2); Two laser positioning components are symmetrically arranged on the two guiding adjustment components with the center plane of the web of the steel beam (2) as the symmetry plane. The laser positioning components are used to project laser fan-shaped surfaces (43) onto the surface of the web of the steel beam (2). The laser fan-shaped surfaces (43) on both sides of the web of the steel beam (2) are symmetrical with respect to the center plane of the web of the steel beam (2).

2. The double-sided construction positioning fixture for steel beams according to claim 1, characterized in that, The laser positioning component includes a positioning plate (41) and a laser projection module (42). The positioning plate (41) is located at the top of the guide adjustment component, and the laser projection module (42) is located on the positioning plate (41).

3. The double-sided construction positioning fixture for steel beams according to claim 2, characterized in that, The surface of the positioning plate (41) is perpendicular to the top surface of the base (1).

4. The double-sided construction positioning fixture for steel beams according to claim 2, characterized in that, The laser positioning component also includes an angle adjustment component, which is disposed between the positioning plate (41) and the laser projection module (42) and is adapted to adjust the setting angle of the laser projection module (42) relative to the positioning plate (41).

5. The double-sided construction positioning fixture for steel beams according to claim 1, characterized in that, The guide adjustment assembly includes a slider (31), which is slidably sleeved on the base (1) and can move along the extension direction of the base (1).

6. The double-sided construction positioning fixture for steel beams according to claim 5, characterized in that, Limiting plates (32) are respectively provided on the opposite side of the two sliders (31), and the two limiting plates (32) respectively abut against the two sides of the lower flange of the steel beam (2) along the width direction.

7. The double-sided construction positioning fixture for steel beams according to claim 5, characterized in that, The bottom end of the slider (31) is provided with a plurality of locking members, which are adapted to releaseably lock the slider (31) onto the base (1).

8. The double-sided construction positioning fixture for steel beams according to claim 1, characterized in that, The base (1) has a plurality of magnetic elements (11) spaced apart on its top surface. The plurality of magnetic elements (11) are adapted to be attracted to the lower surface of the lower flange of the steel beam (2) so as to fix the base (1) to the lower flange of the steel beam (2).

9. The double-sided construction positioning fixture for steel beams according to claim 8, characterized in that, The magnetic suction component (11) is fitted with an anti-slip buffer sleeve on its outer periphery.

10. The double-sided construction positioning fixture for steel beams according to claim 1, characterized in that, Limiting baffles (12) are respectively provided at both ends of the base (1).

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