Highway steel beam embedded part positioning device

Abstract

The utility model relates to highway steel beam preformed part positioning device, including upper layer accurate positioning board and lower fixed base plate, still include the multiple preformed bolts of installation between upper layer accurate positioning board and lower fixed base plate, set in the collapsible anti -floating ring of each preformed bolt middle section position, respectively set in the node connecting plate of upper layer accurate positioning board edge and lower fixed base plate corresponding position, install the rigid stand between two groups of node connecting plate, connect in the inclined strut and horizontal crossbeam between adjacent rigid stand, set in the fine adjustment assembly below four corners of lower fixed base plate, fine adjustment assembly is used for adjusting the elevation and the levelness of whole device, and the upper end and the lower end of each preformed bolt are installed double nut spacer group respectively, the middle part of the novel preformed bolt is equipped with collapsible anti -floating ring, and the automatic support of anti -floating is poured, and the rigid stand forms stable frame with the inclined strut crossbeam, improves integral stiffness, prevents construction deformation deviation.

Description

Technical Field

[0001] This utility model relates to the field of positioning technology for embedded parts of highway steel beams, specifically to a positioning device for embedded parts of highway steel beams. Background Technology

[0002] The highway steel beam embedded part positioning device is a special tool used to accurately fix the anchor bolts of the bearings in bridge construction. It is mainly used to accurately position and fix the position, spacing, verticality and elevation of multiple embedded bolts before concrete pouring. Its function is to prevent the bolts from floating, shifting or tilting during the pouring process, to ensure that the installation accuracy of the embedded parts meets the design requirements, and to improve the installation quality and structural safety of the steel beam bearings. It is widely used in the construction of highway bridge piers or box girders.

[0003] Common positioning devices for embedded parts in highway steel beams typically only fix the position of the embedded bolts using upper and lower positioning plates, lacking an effective anti-buoyancy structure. During the concrete pouring process, the liquid pressure generated by the self-weight of the concrete and the vibration effect can easily cause the embedded bolts to be affected by upward buoyancy, resulting in the bolts shifting upwards or insufficient anchoring depth. This, in turn, affects the subsequent support installation accuracy and structural connection reliability, making it difficult to meet the quality requirements of high-precision bridge construction.

[0004] Meanwhile, common highway steel beam embedded positioning devices have insufficient structural rigidity and lack a spatial support system. Under dynamic construction loads such as concrete vibration, pumping impact, and hopper unloading, they are prone to overall shaking, local deformation, or loosening of nodes, resulting in the embedded bolt group shifting, tilting, or changing spacing. They cannot maintain the original geometric shape and installation accuracy, affecting the subsequent docking installation quality and structural safety of the steel beam supports. Utility Model Content

[0005] This utility model aims to solve the technical problems of existing highway steel beam embedded part positioning devices, such as weak anti-buoyancy capacity, insufficient overall rigidity, easy deformation and displacement, and low installation accuracy. It provides an embedded part positioning device with stable structure, strong adjustability, good anti-buoyancy effect, and easy construction.

[0006] To address the shortcomings of existing technologies, this utility model provides a positioning device for embedded parts of highway steel beams. The embedded bolts are equipped with retractable anti-buoyancy rings that expand to resist buoyancy during pouring. Rigid columns and diagonal bracing beams form a truss frame, enhancing overall rigidity and preventing deformation and displacement during construction. This solves the problems of common positioning devices lacking anti-buoyancy structures, easily causing bolts to float, insufficient rigidity, and easy deformation during vibration, which affects installation accuracy and structural safety.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a positioning device for embedded parts of highway steel beams, comprising an upper precision positioning plate and a lower fixed base plate, and further comprising multiple embedded bolts installed between the upper precision positioning plate and the lower fixed base plate, a foldable anti-buoyancy ring set at the middle section of each embedded bolt, node connecting plates respectively set at the edge of the upper precision positioning plate and the corresponding position of the lower fixed base plate, a rigid column installed between the upper and lower sets of node connecting plates, a diagonal brace and a horizontal beam connecting adjacent rigid columns, and fine-tuning components set below the four corners of the lower fixed base plate;

[0008] The fine-tuning assembly is used to adjust the elevation and level of the entire device. Each pre-embedded bolt has a double nut washer set installed at its upper and lower ends. The double nut washer sets are located above the upper precision positioning plate and below the lower fixed base plate, respectively. The double nut washer sets are used to axially lock and position the pre-embedded bolts. The edge of the upper precision positioning plate is engraved with measurement reference marks. Each pre-embedded bolt passes vertically through the upper precision positioning plate and the lower fixed base plate. The foldable anti-buoyancy ring is used to resist the buoyancy force generated during concrete pouring. The rigid columns are used to support and fix the overall structure. The diagonal braces and horizontal beams between the rigid columns form a space truss structure. The measurement reference marks are used for three-dimensional coordinate measurement and installation accuracy verification during construction.

[0009] Furthermore, the foldable anti-buoyancy ring is composed of multiple fan-shaped metal plates connected by a hinge shaft. Normally, it is in a folded state, but when subjected to the buoyancy force of concrete, it unfolds outward to form a ring-shaped anti-buoyancy baffle.

[0010] Furthermore, the rigid column is a square steel tube, and its upper and lower ends are fixedly connected to the node connection plate by high-strength bolts.

[0011] Furthermore, the fine-tuning component is an adjustable support structure with an adjustable set screw and threaded sleeve. It has a spherical pressure head at the top and a base at the bottom. When the screw is rotated, the device can be adjusted vertically.

[0012] Furthermore, the double nut washer assembly includes a main nut, a secondary nut, a flat washer, and a resilient washer. The main nut is used to apply preload, and the secondary nut is used to lock and prevent loosening.

[0013] Furthermore, the diagonal braces and horizontal beams are connected to the central node connecting plate of the rigid column by high-strength bolts, forming an X-shaped support system.

[0014] Furthermore, the measurement reference marks are machined crosshair concave points, which are used in conjunction with total stations or laser positioning instruments for high-precision three-dimensional coordinate measurement and installation verification.

[0015] Furthermore, lifting lugs are provided at the intersection of the horizontal beam and the diagonal brace. These lifting lugs are used to connect the lifting equipment during overall hoisting.

[0016] This invention integrates the dual functions of flexible anti-buoyancy and rigid positioning through the coordinated design of the automatic deployment mechanism of the anti-buoyancy ring and the rigid frame of the space truss, thereby improving the reliability and accuracy stability of the embedded part positioning device in complex construction environments.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. A foldable anti-buoyancy ring is installed in the middle of each pre-embedded bolt. Normally, it is in a folded state, which is convenient for transportation and installation. When the concrete is poured, the anti-buoyancy ring automatically expands outward under the action of hydraulic pressure to form a ring baffle, increasing the resistance area and effectively resisting the buoyancy generated by the concrete flow. This prevents the pre-embedded bolt from moving upward as a whole and ensures that the anchoring depth meets the design requirements.

[0019] 2. Rigid columns are used to connect the upper and lower positioning plates, and a spatial truss structure is formed by diagonal braces and horizontal beams to form an anti-floating cage frame. The overall rigidity is strong, and the resistance to lateral displacement and torsion is excellent. It can maintain its geometric shape under dynamic construction loads such as concrete vibration and pumping, and avoid deviation or deformation caused by local stress.

[0020] 3. This device adopts a modular design, with each component connected by high-strength bolts, making assembly convenient and reusable. On-site, only one overall hoisting, leveling, and locking operation is required to complete the positioning of all pre-embedded bolts, greatly reducing manual correction time and improving construction efficiency. It is suitable for rapid installation of pre-embedded parts for large-scale bridge piers and abutments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the location of the embedded bolt in this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the location of the fine-tuning component of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the overall floating cage frame of the device of this utility model.

[0026] In the diagram: 1. Upper precision positioning plate; 2. Lower fixed base plate; 3. Embedded bolts; 5. Foldable anti-buoyancy ring; 6. Rigid column; 7. Diagonal brace; 8. Horizontal beam; 9. Node connection plate; 11. Fine-tuning component; 12. Lifting lug; 13. Double nut washer set; 14. Measurement benchmark mark point. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1 The highway steel beam embedded part positioning device in this embodiment includes an upper precision positioning plate 1 and a lower fixed base plate 2, as well as multiple embedded bolts 3 installed between the upper precision positioning plate 1 and the lower fixed base plate 2, a foldable anti-buoyancy ring 5 set in the middle of each embedded bolt 3, node connecting plates 9 respectively set at the edge of the upper precision positioning plate 1 and the corresponding position of the lower fixed base plate 2, rigid columns 6 installed between the upper and lower sets of node connecting plates 9, diagonal braces 7 and horizontal beams 8 connected between adjacent rigid columns 6, and fine adjustment components 11 set below the four corners of the lower fixed base plate 2.

[0029] In this embodiment, the device is equipped with a retractable anti-buoyancy ring in the middle section of the pre-embedded bolt 3. During the pouring process, the ring automatically unfolds to form a baffle to resist the upward buoyancy. At the same time, the rigid column 6, the diagonal brace 7, and the horizontal beam 8 form a spatial truss frame, which significantly improves the overall rigidity and effectively prevents deformation and displacement under construction loads.

[0030] Please see Figures 1-5 In this embodiment, the embedded bolt 3 is equipped with a foldable anti-buoyancy ring in the middle, which is convenient to install when not in use and automatically opens when concrete is poured, like an umbrella to block buoyancy and prevent the bolt from moving upward. The fine-tuning component 11 in this embodiment is used to adjust the elevation and level of the entire device. Each embedded bolt 3 is equipped with a double nut washer group 13 at the upper and lower ends. The double nut washer group 13 is located above the upper precision positioning plate 1 and below the lower fixed base plate 2, respectively. The double nut washer group 13 is used to lock the embedded bolt 3 axially. The edge of the upper precision positioning plate 1 is engraved with measurement reference marks 14. Each embedded bolt 3 passes vertically through the upper precision positioning plate 1 and the lower fixed base plate 2. The foldable anti-buoyancy ring 5 is used to resist the upward buoyancy generated during concrete pouring. The rigid column 6 is used to support and fix the overall structure. The diagonal bracing rod 7 and the horizontal beam 8 between the rigid columns 6 form a spatial truss structure. The measurement reference marks 14 are used for three-dimensional coordinate measurement and installation accuracy verification during construction.

[0031] In this embodiment, the pre-embedded bolt 3 is equipped with a foldable anti-buoyancy ring 5 in the middle. It is folded up for easy installation when not in use and automatically unfolds during pouring, resisting the buoyancy of the concrete like an umbrella and preventing the bolt from moving upward. The fine-tuning component 11 is set at the four corners of the lower base plate to adjust the elevation and level of the entire device to ensure flat installation. The double nut washer group 13 is installed at the upper and lower ends of the pre-embedded bolt 3, respectively located above the upper positioning plate and below the lower base plate. The bolt is axially fixed by the double nut locking structure to prevent loosening. The edge of the upper positioning plate is engraved with measurement reference marks 14 for three-dimensional coordinate measurement and accuracy verification by total station or laser equipment to ensure accurate positioning. The rigid column 6 connects the upper and lower base plates to form the main support structure. The diagonal brace 7 and the horizontal beam 8 connect the rigid column 6 to form a stable spatial truss frame, which improves the overall rigidity and deformation resistance, so that the device maintains its geometric shape during concrete vibration.

[0032] It should be noted that the foldable anti-buoyancy ring 5 is composed of multiple fan-shaped metal pieces connected by hinge shafts. Normally, it is in a folded state. When subjected to the buoyancy force of concrete, it unfolds outward to form an annular anti-buoyancy baffle. Lifting lugs 12 are provided at the intersection of the horizontal beam 8 and the diagonal brace 7. The lifting lugs 12 are used to connect the lifting equipment during the overall lifting. The foldable anti-buoyancy ring 5 is composed of multiple fan-shaped metal pieces connected by hinge shafts. Normally, it is folded up and does not take up space, which is convenient for transportation and installation. When the concrete pouring generates buoyancy force, the metal pieces are forced to unfold outward to form an annular baffle, increasing the resistance area and effectively resisting the upward trend of the pre-embedded bolts 3, maintaining the anchoring depth. Lifting lugs 12 are provided at the intersection of the horizontal beam 8 and the diagonal brace 7. The lifting lugs 12 serve as the connection point for overall lifting, bear the load during the lifting process, facilitate the hooking operation of the lifting equipment, and ensure the stable lifting and safe placement of the device.

[0033] It should be added that the foldable anti-buoyancy ring 5 is in a free-folded state when the concrete is not poured. When the concrete liquid level rises to the position of the anti-buoyancy ring and generates upward pressure, the fan-shaped metal sheet is rotated outward around the hinge axis under the action of fluid static pressure until it is fully opened to form a closed ring baffle.

[0034] The node connection plate 9 is connected with high-strength bolts, which facilitates quick assembly and disassembly on site, while ensuring the rigidity and load-bearing capacity of the connection node.

[0035] The articulated shaft connection allows the anti-buoyancy ring to remain in a retracted state when there is no external force, reducing the transportation volume, and to freely unfold when under force, with a sensitive response.

[0036] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5In this embodiment, to achieve a sturdy cage between the upper and lower positioning plates using rigid columns 6, diagonal braces, and crossbeams, ensuring overall stability and preventing swaying or tilting during vibration, the rigid columns 6 in this embodiment are square steel pipes. The upper and lower ends of the rigid columns 6 are fixedly connected to the node connection plates 9 by high-strength bolts. The double nut washer group 13 includes a main nut, a secondary nut, a flat washer, and an elastic washer. The main nut is used to apply preload, and the secondary nut is used to lock and prevent loosening. The diagonal braces 7 and the horizontal crossbeams 8 are respectively connected to the middle node connection plates 9 of the rigid columns 6 by high-strength bolts, forming an X-shaped support system.

[0037] In this embodiment, the rigid column 6 is made of square steel tube, which has high compressive and bending resistance. It is used to connect the upper and lower positioning plates and bear the construction load. Its two ends are fixed to the node connection plate 9 by high-strength bolts, which is reliable and easy to disassemble and assemble. The diagonal brace 7 and the horizontal beam 8 are connected to the rigid column 6 through the node connection plate 9 to form an X-shaped support structure, which enhances the overall stability and resistance to lateral deformation and effectively prevents shaking or tilting during vibration. The double nut washer group 13 includes a main nut, a secondary nut, a flat washer and an elastic washer. The main nut is used to apply preload to make the connection tight. The secondary nut plays a locking role to prevent loosening. The flat washer disperses pressure and protects the connection surface. The elastic washer provides continuous elasticity to compensate for the loss of preload caused by vibration, and together ensure the firmness and safety of the connection.

[0038] It should be noted that the fine-tuning component 11 is an adjustable adjustable support structure with a threaded sleeve and a spherical bearing head at the top and a base at the bottom. When the screw is rotated, the device can be adjusted vertically. The measurement reference mark 14 is a machined crosshair concave point. The measurement reference mark 14 is used to cooperate with a total station or laser positioning instrument for high-precision three-dimensional coordinate measurement and installation verification.

[0039] In other embodiments, the foldable anti-buoyancy ring 5 can also adopt a spring pre-tightening structure, which automatically unfolds when there is no external force, and is manually pressed and folded before pouring. After pouring, the concrete pressure overcomes the spring force to achieve stable anti-buoyancy. The rigid column 6 can also be made of round steel pipe or H-beam, and the diagonal brace 7 can be arranged in the form of K-type or single diagonal brace, all of which can achieve structural stability. The fine-tuning component 11 can also adopt a screw jack or hydraulic lifting device, which is suitable for large tonnage or ultra-high precision scenarios.

[0040] The working principle of the above embodiments is as follows:

[0041] During use, the device is installed by first passing the pre-embedded bolts 3 through the upper precision positioning plate 1 and the lower fixed base plate 2 (by simultaneously adjusting the fine-tuning components 11 at the four corners, precise control of the overall elevation and level of the device can be achieved; after adjustment, the locking nuts are used to prevent loosening during subsequent construction). The foldable anti-buoyancy ring 5 is in a retracted state for easy operation. The rigid columns 6, diagonal braces 7, and horizontal beams 8 are connected to the node connecting plates 9 with high-strength bolts to form a stable frame. The fine-tuning components 11 are placed under the four corners of the lower base plate. During overall hoisting, the hoisting lugs 12 are used to connect the lifting equipment for stable positioning. After positioning, rotate the screw of the fine-tuning component 11 to adjust the elevation and level of the device to ensure flat installation. Use the measurement reference mark 14 on the edge of the upper positioning plate and a total station to perform three-dimensional coordinate verification. After confirming the accurate position, use the double nut washer set 13 to lock the upper and lower ends of the embedded bolt 3 to prevent loosening. When pouring concrete, the anti-buoyancy ring automatically expands outward under the action of buoyancy to form an annular baffle to resist buoyancy and prevent the bolt from moving upward. The X-shaped support structure formed by the diagonal brace 7 and the horizontal beam 8 enhances the overall rigidity, keeps the device stable during vibration, and ensures the positioning accuracy of the embedded parts.

[0042] The installation steps for this device are as follows:

[0043] 1) After the reinforcement is tied, position and temporarily fix the lower fixed base plate 2;

[0044] 2) Pass the pre-embedded bolts 3 through the lower bottom plate, the foldable anti-buoyancy ring 5, and the upper precision positioning plate 1 in sequence;

[0045] 3) Install rigid columns 6, diagonal braces 7, and horizontal beams 8, and connect them to node connection plates 9 with high-strength bolts to form an overall frame. (During installation, the rigid columns 6, diagonal braces 7, and horizontal beams 8 are pre-connected to node connection plates 9 with high-strength bolts. The bolts are initially tightened and not fully locked to maintain a certain degree of adjustability for the overall frame. After the device is hoisted into place, the elevation and level of the lower fixed base plate 2 are adjusted using the fine-tuning component 11 to ensure overall flatness. After the three-dimensional coordinates are verified to be accurate, all high-strength bolts are finally tightened to form a rigid and stable system for the space truss structure. This achieves the construction sequence of leveling first and then fixing, ensuring positioning accuracy and structural stability.)

[0046] 4) Hoisting and positioning: Connect the lifting equipment through the lifting lugs 12 and slowly lower it to the designed position;

[0047] 5) Use the fine-tuning component 11 to adjust the elevation and levelness;

[0048] 6) Use a total station to verify the three-dimensional coordinates of measurement reference point 14;

[0049] 7) Tighten the double nut washer assembly 13 to complete the positioning;

[0050] 8) Pour concrete, and the foldable anti-buoyancy ring 5 will automatically unfold to resist buoyancy.

[0051] It should be noted that through the collaborative design of the foldable anti-buoyancy ring 5 and the space truss frame, the anti-buoyancy ring is responsible for resisting local buoyancy forces, while the truss structure bears the overall load and suppresses deformation. The two work together to achieve the composite function of point anti-buoyancy and surface stability, solving the technical problem that a single structure cannot take into account both anti-buoyancy and stiffness.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for embedded parts of highway steel beams, comprising an upper precision positioning plate (1) and a lower fixed base plate (2), characterized in that: It also includes multiple pre-embedded bolts (3) installed between the upper precision positioning plate (1) and the lower fixed base plate (2), a foldable anti-buoyancy ring (5) set in the middle of each pre-embedded bolt (3), node connection plates (9) respectively set at the edge of the upper precision positioning plate (1) and the corresponding position of the lower fixed base plate (2), rigid columns (6) installed between the upper and lower sets of node connection plates (9), diagonal bracing rods (7) and horizontal beams (8) connected between adjacent rigid columns (6), and fine-tuning components (11) set below the four corners of the lower fixed base plate (2). The fine-tuning component (11) is used to adjust the elevation and level of the entire device. Each pre-embedded bolt (3) has a double nut washer assembly (13) installed at the upper and lower ends respectively. The double nut washer assembly (13) is located above the upper precision positioning plate (1) and below the lower fixed base plate (2). The double nut washer assembly (13) is used to lock the pre-embedded bolt (3) axially. The upper precision positioning plate (1) has measurement reference marking points (14) engraved on its edge. Each pre-embedded bolt (3) passes vertically through the upper precision positioning plate (1) and the lower fixed base plate (2). The foldable anti-buoyancy ring (5) is used to resist the upward buoyancy generated during the concrete pouring process. The rigid column (6) is used to support and fix the overall structure. The diagonal bracing (7) between the rigid columns (6) and the horizontal beam (8) form a spatial truss structure. The measurement benchmark mark (14) is used for three-dimensional coordinate measurement and installation accuracy verification during the construction process.

2. The positioning device for embedded parts of highway steel beams according to claim 1, characterized in that: The foldable anti-buoyancy ring (5) is composed of multiple fan-shaped metal sheets connected by a hinge shaft. Normally it is in a folded state, but when subjected to the buoyancy force of concrete, it unfolds outward to form an annular anti-buoyancy baffle.

3. The positioning device for embedded parts of highway steel beams according to claim 1, characterized in that: The rigid column (6) is a square steel tube, and its upper and lower ends are fixedly connected to the node connection plate (9) by high-strength bolts.

4. The positioning device for embedded parts of highway steel beams according to claim 1, characterized in that: The fine-tuning component (11) is an adjustable support structure with adjustable set screw and threaded sleeve. It has a spherical pressure head at the top and a base at the bottom. When the screw is rotated, the device can be adjusted vertically.

5. The positioning device for embedded parts of highway steel beams according to claim 1, characterized in that: The double nut washer set (13) includes a main nut, a secondary nut, a flat washer and an elastic washer. The main nut is used to apply preload, and the secondary nut is used to lock and prevent loosening.

6. The positioning device for embedded parts of highway steel beams according to claim 1, characterized in that: The diagonal brace (7) and the horizontal beam (8) are respectively connected to the middle node connecting plate (9) of the rigid column (6) by high-strength bolts to form an X-shaped support system.

7. The positioning device for embedded parts of highway steel beams according to claim 1, characterized in that: The measurement reference mark (14) is a crosshair concave point machined by a machine. The measurement reference mark (14) is used in conjunction with a total station or laser positioning instrument to perform high-precision three-dimensional coordinate measurement and installation verification.

8. The positioning device for embedded parts of highway steel beams according to claim 7, characterized in that: A lifting lug (12) is provided at the intersection of the horizontal beam (8) and the diagonal brace (7). The lifting lug (12) is used to connect the lifting equipment during the overall hoisting.

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