One-time precise positioning device for PC laminated plate
Through the combined design of supporting steel beams, fixing nuts, adjustment bolts and guide positioning plates, the problem of long and large errors in positioning of traditional PC laminates is solved, and the rapid and accurate positioning of PC laminates is achieved, and construction efficiency and building safety are improved.
Patent Information
- Application Number
- CN202421528992.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The traditional PC stacked plate positioning method takes a long time and has large positioning errors, which affects the construction quality and efficiency.
The combination design of supporting steel beams, fixing nuts, adjustment bolts, support fastening bolts and guide positioning plates is adopted. The guide positioning plate provides accurate guidance function through internal threads and self-locking nuts.
It realizes the rapid and accurate positioning of PC laminated panels, reduces construction difficulty, improves installation efficiency and structural safety of the overall building, and avoids secondary manual correction.
Smart Images
Figure CN223088938U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction equipment, in particular to a device for accurately positioning a PC composite slab at one time. Background Art
[0002] With the continuous development of the construction industry, prefabricated building technology has gradually become one of the efficient and energy-saving construction methods. In prefabricated buildings, the installation and positioning of precast components are key steps in quality control, which involves the installation project of PC composite slabs. During the installation process of PC composite slabs, accurate positioning at one time affects the installation efficiency of the structure, the construction quality, and the structural safety of the overall building. Currently, the traditional positioning of PC composite slabs often involves roughly adjusting the position manually during the hoisting process and then making a second manual adjustment after loosening the sling. In addition to the long time-consuming installation and positioning, this method also has relatively serious quality hazards such as large positioning errors, which has a great impact on the construction quality and efficiency. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a powerful adjustment ability for the device through the combined use of a fixing nut, an adjusting bolt, and a supporting fastening bolt. The bent design of the guiding positioning plate not only ensures the positioning accuracy of the PC composite slab but also provides a smooth guiding function, realizing the rapid and accurate positioning of the PC composite slab, while ensuring the smoothness of the installation process and the stability of the device.
[0004] To achieve the above purpose, the utility model is realized through the following technical solutions: A device for accurately positioning a PC composite slab at one time, characterized in that it includes a supporting steel beam, a fixing nut, an adjusting bolt, a supporting fastening bolt, a guiding positioning plate, and a stiffening plate; the supporting steel beam is welded by a square steel tube and steel plates at both ends, and is used as the basic framework of the entire device; 4 holes are symmetrically opened on the steel plates at both ends of the supporting steel beam for connecting the fixing nut; the fixing nuts are respectively welded to the inner sides of the steel plates at both ends of the supporting steel beam corresponding to the openings of the steel plates at both ends of the supporting steel beam to ensure the stability of the connection; the length of the adjusting bolt is slightly shorter, and it passes through the holes on the front-end steel plate of the supporting steel beam, the fixing nut, and is connected to the supporting steel beam for adjusting the position of the positioning plate; the length of the supporting fastening bolt is longer, and it passes through the holes on the rear-end steel plate of the supporting steel beam, the fixing nut, and is connected to the supporting steel beam for adapting to the installation positions of PC composite slabs with different widths; the guiding positioning plate is formed by bending a steel plate and is welded and fixed to the supporting steel beam; the lower half of the guiding positioning plate is perpendicular to the supporting steel beam to ensure the positioning accuracy of the PC composite slab, and the upper half is bent about 2 - 3 cm towards the side of the supporting steel beam to provide a smooth guiding function; the stiffening plate is cut from a steel plate, and its two ends are perpendicularly welded to the supporting steel beam and the guiding positioning plate respectively to enhance the anti-deformation ability of the guiding positioning plate and ensure the positioning accuracy.
[0005] As a precise primary positioning device for PC laminated plates of the present utility model, it is characterized in that: the holes on the steel plates at both ends of the supporting steel beam adopt internal thread design to enhance the connection strength with bolts; the fixing nuts adopt self-locking nut design to prevent bolt loosening caused by vibration.
[0006] As a precise primary positioning device for PC laminated plates of the present utility model, it is characterized in that: the fixing nuts are made of wear-resistant materials to improve the stability and durability of the connection; the surface of the guiding and positioning plate is coated with a wear-resistant coating to extend the service life.
[0007] The present utility model provides a precise primary positioning device for PC laminated plates, which has the following beneficial effects:
[0008] Through its delicate design and the synergistic effect of components, the utility model realizes the rapid and accurate positioning of PC laminated plates. The device is easy to operate and has high precision, ensuring the smoothness of the installation process and the stability of the device; the design fully considers the structural stability and adjustment flexibility, adapts to the installation requirements of PC laminated plates with different widths, reduces the construction difficulty and improves the construction efficiency, thereby effectively ensuring the installation quality of precast components and the safety of the overall building structure, achieving the precise primary positioning of PC laminated plate installation and eliminating the secondary manual correction in conventional installation. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 is the structural schematic diagram of the present utility model;
[0010] Figure 2 is the top view structural plan of the present utility model;
[0011] Figure 3 is the left view structural plan of the present utility model;
[0012] In the figure: 1. Supporting steel beam; 2. Fixing nut; 3. Adjusting bolt; 4. Supporting fastening bolt; 5. Guiding and positioning plate; 6. Stiffening plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0013] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0014] Please refer to Figure 1 , the present utility model provides a technical solution: a precise primary positioning device for PC laminated plates:
[0015] In this implementation plan: Steel square tubes and steel plates are used to weld and support steel beams. The thickness of the steel plate is 4 mm. The width of the square tube is slightly smaller than the reserved steel bar spacing of the composite slab to avoid conflicts between the positioning plate and the steel bar positions. The length is 15 cm (when the designed width of the beam and wall is 200, the length can be appropriately increased as the width increases). Two φ18 holes are symmetrically opened on each of the two end steel plates; there are a total of four fixing nuts, and the models match those of the adjusting bolts (M16) and the support fastening bolts (M16). They are welded and fixed inside the corresponding openings on the two end steel plates of the support steel beam; the model of the adjusting bolt is M16, and the length of the bolt is determined according to the adjustment range required. Generally, for PC composite slabs, they are embedded 2 cm into the support beam or wall, or are flush with the beam or wall edge. Generally, the length of the screw rod plus the nut can be selected as 60 mm. During use, the position of the guiding positioning plate can be adjusted by adjusting the nut according to the position relationship between the edge of the PC composite slab and the beam or wall edge in the design requirements to match the design requirements for positioning, meeting the diverse design and construction needs; the model of the support fastening bolt is M16, and the length can be determined according to the width of the beam and wall at the edge of the composite slab in the design drawing. For example, when the width range is 200 - 250 mm, the bolt length can be 10 mm (including the nut). During use, the elongation of the adjusting bolt can be adjusted to adapt to different installation working conditions (mainly referring to the cross-sectional width of the designed beam and wall); the guiding positioning plate is made of a 4 mm thick steel plate and is integrally welded and fixed on the support steel beam. The lower part of it is perpendicular to the support steel beam as the positioning plate, and the upper part is slightly bent outward (about 15°) as the guiding plate, simultaneously having the guiding function for facilitating the placement of the PC composite slab and the positioning function for ensuring accurate positioning; the stiffening plate is made of a 4 mm thick steel plate and is welded to the guiding positioning plate and the support steel beam at both ends respectively.
[0016] According to the position relationship (the embedded size in the beam and wall) between the edge of the composite slab and the beam and wall in the design drawing, the position of the guiding positioning plate is adjusted by controlling the elongation of the adjusting bolt to make the position of the positioning plate consistent with the position of the edge of the designed composite slab; place the device in the formwork groove of the beam and wall, ensuring that the upper surface of the support steel beam is flush with or slightly lower than the bottom formwork surface of the composite slab to be installed; adjust the support fastening bolt to tightly press against the side formwork of the beam and wall on the other side of the composite slab to be installed; check and correct the elevation and position of the device; hoist the composite slab. When it is close to the installation position, bring the two edges of the composite slab close to the guiding plates of the device respectively and then let it fall along the guiding plates until it aligns with the positioning plate.
[0017] Specifically, the holes on the two end steel plates of the support steel beam adopt internal thread design to enhance the connection strength with the bolts; the fixing nuts adopt self-locking nut design to prevent the bolts from loosening due to vibration.
[0018] In this embodiment: On the steel plates at both ends of the supporting steel beam, holes are drilled using high-precision CNC drilling technology. The key to the subsequent processing of these holes is to generate internal threads in order to form threads in the holes by means of thread rolling. This method can form precise and high-strength threads on the steel, thereby improving the strength and durability of the connection with bolts. After processing, the internal threads need to be treated against rust, such as by plating or applying rust-preventive oil, to ensure that the threads will not be damaged by rust during long-term storage or use; select self-locking nuts suitable for this application scenario, such as nylon insert self-locking nuts or metal insert self-locking nuts. The inserts built into the self-locking nuts provide additional clamping force when the bolts are screwed in. This clamping force can prevent self-loosening caused by vibration. When connecting the self-locking nuts to the end plates of the supporting steel beam with internal threads prepared previously, it is necessary to ensure that the nuts fit perfectly, and use a torque wrench or an angle wrench to tighten them according to the set torque requirements to ensure the realization of the self-locking function. After installation, a vibration test is carried out to simulate the actual use conditions to ensure the reliability of the self-locking nuts.
[0019] Specifically, the fixing nut is made of wear-resistant material to improve the stability and durability of the connection; the surface of the guiding and positioning plate is coated with a wear-resistant coating to extend its service life.
[0020] In this embodiment: Select materials with high strength, high hardness and good wear resistance, such as alloy steel or stainless steel, to manufacture the fixing nut. The selected materials are processed into nuts by means of precision machining techniques such as cold heading or hot forging. After processing, heat treatment (such as quenching and tempering) is carried out to enhance its hardness and wear resistance. In order to further improve the durability and rust resistance of the nut, additional treatment can be carried out on the surface of the nut, such as electroplating or coating with a layer of nickel or zinc to increase its corrosion resistance and wear resistance; the guiding and positioning plate should first be thoroughly cleaned and surface pretreated (such as sandblasting or chemical etching) to remove impurities on the surface and create a rough surface suitable for coating attachment. Select suitable wear-resistant coating materials, such as tungsten carbide or polytetrafluoroethylene (PTFE) coating, and adopt high-quality coating techniques, such as plasma spraying or electrochemical deposition, to ensure that the coating is uniform and tightly bonded to the surface of the guiding and positioning plate.
[0021] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.
Claims
1. A precise positioning device for PC laminated plates for the first time, characterized in that, It includes a supporting steel beam (1), fixing nuts (2), adjusting bolts (3), supporting fastening bolts (4), a guiding positioning plate (5) and a stiffening plate (6); the supporting steel beam (1) is formed by welding a square steel tube and steel plates at both ends; four holes are symmetrically formed on the steel plates at both ends of the supporting steel beam (1); the fixing nuts (2) correspond to the holes in the steel plates at both ends of the supporting steel beam (1) and are respectively welded to the inner sides of the steel plates at both ends of the supporting steel beam (1); the adjusting bolts (3) are short in length and sequentially pass through the holes in the front-end steel plate of the supporting steel beam (1), the fixing nuts (2) and are connected to the supporting steel beam (1); the supporting fastening bolts (4) are long in length and sequentially pass through the holes in the rear-end steel plate of the supporting steel beam (1), the fixing nuts (2) and are connected to the supporting steel beam (1); the guiding positioning plate (5) is formed by bending a steel plate and is fixedly welded to the supporting steel beam (1); the lower half of the guiding positioning plate (5) is perpendicular to the supporting steel beam (1), and the upper half is bent approximately 2 - 3 cm towards the side of the supporting steel beam; the stiffening plate (6) is made by cutting a steel plate, and both ends are perpendicularly welded to the supporting steel beam (1) and the guiding positioning plate (5) respectively.
2. The one-time precise positioning device for PC laminated plates according to claim 1, wherein: The holes in the steel plates at both ends of the supporting steel beam (1) adopt an internal thread design; the fixing nuts (2) adopt a self-locking nut design.
3. The one-time precise positioning device for PC laminated plates according to claim 1, wherein: The fixing nuts (2) are made of wear-resistant materials; the surface of the guiding positioning plate (5) is coated with a wear-resistant coating.