PC prefabricated slab joint installation flatness control device
By designing a flatness control device for the joints of precast PC slabs, the problem of misaligned joints during the splicing of precast PC slabs was solved, enabling quick and convenient leveling operations, improving construction quality and efficiency, and reducing costs.
Patent Information
- Application Number
- CN202422711437.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-07
AI Technical Summary
During the splicing of precast PC slabs, insufficient levelness of the support frame leads to misalignment gaps between adjacent slabs, affecting construction quality and efficiency. Existing leveling operations are cumbersome and affect splicing stability.
A PC precast slab joint installation flatness control device was designed, including a leveling device and a protective sleeve. By combining the main tie rod, the leveling beam and the gantry frame, a fast and convenient leveling operation can be achieved, and the device can be reused.
It enables quick and convenient leveling operations, improves construction quality and efficiency, ensures splicing stability, and can be reused multiple times, thus reducing construction costs.
Smart Images
Figure CN223548954U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of prefabricated building technology, and in particular to a device for controlling the flatness of PC prefabricated panel joints. Background Technology
[0002] PC precast slabs refer to concrete products that are processed and produced in factories using standardized and mechanized methods. In contrast, traditional cast-in-place concrete requires many processes such as on-site mold making, on-site pouring, and on-site curing, which greatly increases the construction time. Currently, precast concrete slabs are widely used in prefabricated buildings and other fields by adopting the prefabrication and splicing installation method.
[0003] However, during the sequential splicing of precast PC slabs, insufficient horizontal precision of the support frame during installation leads to misalignment gaps between adjacent slabs at the joints, resulting in substandard flatness and affecting construction quality and subsequent decoration. Furthermore, existing leveling operations for adjacent precast PC slabs require on-site workers to add shims for tedious leveling, significantly impacting construction efficiency. The poor stability of the spliced adjacent precast PC slabs also affects the subsequent pouring of the cast-in-place layer. Therefore, a convenient, reusable, and easy-to-disassemble joint flatness control device is needed to improve construction quality and efficiency. Utility Model Content
[0004] This application provides a PC precast slab joint installation flatness control device, which enables quick and convenient disassembly and assembly, precise leveling operations, and can be reused multiple times, ensuring construction quality and accelerating construction efficiency.
[0005] The PC precast panel joint installation flatness control device provided in this application includes: a leveling device passing through the joint between any two adjacent PC precast panels; the leveling device includes: a tightening main tie rod passing through the joint, a bottom leveling assembly connected to the exposed first end of the tightening main tie rod, and a top flattening assembly connected to the exposed second end of the tightening main tie rod; wherein, the bottom leveling assembly includes a leveling crossbeam fitting between the bottom planes of two corresponding adjacent PC precast panels; the top flattening assembly includes a portal frame; the portal frame has two vertical supports pressing against the top planes of the two corresponding adjacent PC precast panels; the tightening main tie rod... The exposed first end of the main tensioning rod has a first threaded section that is threadedly connected to the leveling crossbeam, and the exposed second end of the main tensioning rod has a second threaded section that is threadedly connected to the portal frame body; both the first threaded section and the second threaded section are interspersed with a tightening torsion bar for applying force; when any tightening torsion bar drives the main tensioning rod to rotate, the leveling crossbeam and the portal frame body move away from each other or move closer to each other; the leveling device also includes multiple protective sleeves, which are correspondingly slidably fitted on the two vertical support legs and the middle section of the main tensioning rod, and the bottom of each of the multiple protective sleeves is in contact with the top plane of the corresponding PC precast slab.
[0006] In this application, when the main tie rod is rotated by the tightening torsion bar at any end, the portal frame and the leveling lateral are brought closer together to apply a leveling force. Under the continuous pressure of the leveling force, the misaligned joints of the two adjacent precast PC panels are brought together and leveled. The overall leveling method is simple, convenient to disassemble and assemble, and flexible to reuse. At the same time, the protective sleeve prevents it from solidifying with the cast-in-place layer and is easy to remove and reuse multiple times.
[0007] In one specific implementation, a first nut is connected to the lower surface of the leveling beam, and a first threaded section passes through the leveling beam and is threadedly connected to the first nut. A hole is made in the leveling beam and the first nut is connected thereto, enabling quick installation and adjustment.
[0008] In one specific implementation, the portal frame includes: two vertical supports and a cross brace connecting the tops of the two vertical supports; wherein, a second nut is connected to the upper surface of the cross brace, and a second threaded section passes through the cross brace and is threadedly connected to the second nut. A hole is made in the cross brace and the second nut is connected thereto, enabling quick installation and adjustment.
[0009] In one specific feasible implementation, when both the first threaded segment and the second threaded segment are fitted with a tightening torsion bar for applying force, a first through hole is laterally opened on the first threaded segment, and a first tightening torsion bar is inserted into the first through hole; a second through hole is laterally opened on the second threaded segment, and a second tightening torsion bar is inserted into the second through hole. This allows for bidirectional force adjustment, greatly improving overall convenience.
[0010] In one specific implementation, the first threaded segment and the second threaded segment have opposite thread directions. This separate configuration of left-hand and right-hand threads ensures both the accuracy of the applied leveling force and the ease of quick disassembly.
[0011] In one specific implementation, the first nut is welded to the center point of the leveling beam; the second nut is welded to the center point of the cross brace, and the first nut and the second nut are located at the same center. The applied leveling force is evenly distributed.
[0012] In one specific feasible implementation, the length of the tightening main tie rod is ≥600mm, and the height of the portal frame is ≥300mm; the lengths of both the first threaded section and the second threaded section are greater than 120mm. By selecting appropriate dimensions, it can be matched to the leveling operations of various types of PC precast panels.
[0013] In one specific implementation scheme, the plurality of protective sleeves are all stainless steel sleeves or PVC sleeves. They are not easily bonded to the cast-in-place layer and are easy to remove. Attached Figure Description
[0014] Figure 1 A schematic diagram of the splicing state of the PC prefabricated panel provided in the embodiments of this application;
[0015] Figure 2 A schematic diagram of the structure of the PC precast panel joint flatness control device provided in the embodiments of this application;
[0016] Figure 3 This is a schematic diagram of the leveling beam provided in an embodiment of this application;
[0017] Figure 4 This is a structural schematic diagram of the portal frame provided in an embodiment of this application.
[0018] Icon labels:
[0019] PC precast panel-100, semi-circular groove-101, mounting hole-110;
[0020] Cast-in-place layer -200;
[0021] Tighten the main tie rod -10, the first threaded section -11, the first through hole -111, the second threaded section -12, and the second through hole -121;
[0022] Leveling beam-20, first nut-21;
[0023] First fastening torsion bar -30;
[0024] Horizontal brace - 40, vertical support leg - 41, second nut - 42;
[0025] Second fastening torsion bar -50;
[0026] Pull rod protective sleeve - 60;
[0027] Support leg protective cover-70. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.
[0029] It should be noted that, unless otherwise defined, the technical or scientific terms used in one or more embodiments of this specification should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar words used in one or more embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0030] To facilitate understanding of the PC precast slab joint installation flatness control device provided in this application embodiment, its application scenario is first explained. During the sequential splicing process of PC precast slabs, insufficient horizontal accuracy of the support frame during installation leads to misalignment gaps between adjacent slabs at the joints, resulting in substandard flatness and affecting construction quality and subsequent decoration. Furthermore, existing leveling operations for adjacent PC precast slabs require on-site construction personnel to add shims for tedious leveling, significantly impacting construction efficiency. The poor stability of adjacent PC precast slab splices also affects the subsequent pouring of cast-in-place layers. Therefore, a convenient, reusable joint installation flatness control device is needed to improve construction quality and efficiency. In view of this, this application provides a PC precast slab joint installation flatness control device that enables quick and convenient disassembly and assembly, precise leveling, and multiple reuses, ensuring construction quality and accelerating construction efficiency.
[0031] refer to Figure 1 As shown, Figure 1 This is a schematic diagram showing the splicing state of the PC prefabricated board 100 provided in an embodiment of this application. Figure 1 As can be seen, after two adjacent precast PC panels 100 are spliced, mounting holes 110 are formed in the joint between the panels for assembling the joint installation flatness control device of this application. Specifically, when multiple mounting holes 110 are formed between two adjacent precast PC panels 100, semi-circular grooves 101 are pre-reserved on both sides of any one precast PC panel 100. The semi-circular grooves 101 are pre-formed using molds during the manufacturing process of the precast PC panels 100. Multiple semi-circular grooves 101 can be provided on both sides of each precast PC panel 100 depending on its length. The mounting holes 110 are formed when the semi-circular grooves 101 between any two adjacent precast PC panels 100 overlap. The pre-reservation of the mounting holes 110 allows the joint installation flatness control device to penetrate the two adjacent precast PC panels 100 along the joint, thereby achieving the application of bidirectional leveling force. It should be noted that the joint installation flatness control device in this application can also be applied to many prefabricated buildings such as precast wall panels, steel structure panels, and wood panels. By reserving installation holes 110 and filling the installation holes 110 later, the decoration construction requirements can be met. Here, only the method of adjusting the height misalignment of the joints of the PC precast panel 100 will be described in detail.
[0032] Continue to refer to Figure 2As shown, the PC precast panel joint installation flatness control device provided in this application includes: a leveling device that passes through the joint between any two adjacent PC precast panels 100; the leveling device in this application has low manufacturing cost, can be mass-produced and used in the installation process of PC precast panels 100 to ensure that the bottom surface flatness of multiple PC precast panels 100 is consistent, the overall adjustment method is simple and convenient, and it has high flexibility and reusability, thereby reducing construction costs and improving construction efficiency.
[0033] The leveling device includes a tightening main tie rod 10 that passes through the plate joint, the tightening main tie rod 10 passing through the plate joint along the mounting hole 110. In a specific embodiment of this application, the tightening main tie rod 10 is made of 32mm diameter round steel, which is readily available, and the length of the tightening main tie rod 10 is 600mm, providing a large adjustment range. The main tensioning rod 10 serves as the main body for transmitting the leveling force in this application. A bottom leveling component is connected to the first end of the main tensioning rod 10 exposed at the bottom of the PC precast slab 100, and a top flattening component is connected to the second end of the main tensioning rod 10 exposed at the top of the PC precast slab 100. Both the bottom leveling component and the top flattening component are threadedly connected to the main tensioning rod 10, thereby enabling the bottom leveling component to simultaneously apply a lifting leveling force to the bottom plane of two adjacent PC precast slabs 100 while the main tensioning rod 10 is rotating, and the top flattening component to simultaneously apply a downward leveling force to the top plane of two adjacent PC precast slabs 100. As the two opposing leveling forces are gradually applied, the flatness accuracy between the slabs is improved.
[0034] Combination Figure 2 and Figure 3 As shown, the bottom leveling component in this application includes a leveling beam 20 that is attached between the bottom planes of two adjacent PC precast panels 100. In a specific embodiment of this application, the leveling beam 20 uses a 50mm wide, 30mm thick, and 300mm long steel bar as the main body of the leveling beam 20. The leveling beam 20 is preferably arranged in a cross-shaped relationship with the panel seam, thereby making the fit stronger.
[0035] The exposed first end of the tightening main tie rod 10 has a first threaded section 11 that is threadedly connected to the leveling beam 20. A first nut 21 is connected to the lower surface of the leveling beam 20. The first threaded section 11 passes through the leveling beam 20 and is threadedly connected to the first nut 21. A hole is made in the leveling beam 20 and the first nut 21 is connected to it, so as to achieve quick installation and adjustment.
[0036] Therefore, after the first nut 21 of the leveling beam 20 is threadedly connected to the first threaded section 11, it passes through the mounting hole 110 from bottom to top along the tightening main tie rod 10, and the leveling beam 20 is pre-fitted to the board seam. At this time, the mounting beam is in an inclined state when the board seam is misaligned. By installing the top flattening component at the exposed second end of the tightening main tie rod 10, and while continuously applying pre-tightening force, the top flattening component and the leveling beam 20 cooperate with each other to make the leveling beam 20 gradually move to a horizontal state, thereby improving the flatness accuracy of the misaligned PC precast board 100.
[0037] Please refer to the above. Figure 2 and Figure 4 In the specific installation of the top flattening assembly, the top flattening assembly includes a portal frame; the portal frame has a second threaded section 12 at its exposed second end that is threaded to the portal frame. By threading the portal frame through the second threaded section 12, the portal frame and the leveling beam 20 can move away from or towards each other during the rotation of the main tensioning rod 10, thereby facilitating leveling and dismantling operations.
[0038] Specifically, the portal frame includes two vertical legs 41 and a cross brace 40 connected between the tops of the two vertical legs 41. A second nut 42 is connected to the upper surface of the cross brace 40, and a second threaded section 12 passes through the cross brace 40 and is threadedly connected to the second nut 42. The cross brace 40 has a hole for connecting the second nut 42, enabling quick installation and adjustment. In one specific embodiment of this application, both the cross brace 40 and the two vertical legs 41 are made of steel strips 50mm wide, 30mm thick, and 300mm long, forming a portal frame 300mm high and 300mm wide. Of course, in other embodiments of this application, the portal frame can also be formed by welding square or round steel to prevent deformation when a large leveling force is applied.
[0039] In this embodiment, two vertical support legs 41 press against the top planes of two adjacent PC precast panels 100; the first threaded section 11 and the second threaded section 12 are both inserted with fastening torsion bars for applying force; when any one of the fastening torsion bars drives the main tie rod 10 to rotate, the leveling beam 20 and the portal frame move away from or closer to each other.
[0040] When the leveling beam 20 and the portal frame are moved away from or close to each other, the first threaded section 11 and the second threaded section 12 in this application have opposite thread directions. The separate configuration of left-hand and right-hand threads ensures the accuracy of the applied leveling force and the convenience of quick disassembly.
[0041] Furthermore, in order to achieve convenient bidirectional force adjustment in this application, when both the first threaded section 11 and the second threaded section 12 are fitted with tightening torsion bars for applying force, a first through hole 111 is laterally opened on the first threaded section 11, and a first tightening torsion bar 30 is inserted into the first through hole 111; a second through hole 121 is laterally opened on the second threaded section 12, and a second tightening torsion bar 50 is inserted into the second through hole 121. This allows for bidirectional force adjustment, greatly improving overall convenience.
[0042] Continue reading Figure 2 As shown, the first nut 21 is welded to the center point of the leveling beam 20; the second nut 42 is welded to the center point of the cross brace 40, and the first nut 21 and the second nut 42 are located at the same center. This ensures that the force of the leveling force is evenly distributed.
[0043] In this application, while the assembly and adjustment of the portal frame structure is in progress, the flatness accuracy between the panels is improved without affecting the construction of the cast-in-place layer 200 on the top plane of the precast PC slab 100. To prevent concrete from solidifying between the main tie rod 10 and the two vertical supports 41 during the pouring of the cast-in-place layer 200, the leveling device in this application also includes three protective sleeves. These are a tie rod protective sleeve 60 that slides onto the middle section of the main tie rod 10, and two support protective sleeves 70 that slide onto the two vertical supports 41 respectively. The bottoms of the tie rod protective sleeve 60 and the two support protective sleeves 70 are all in contact with the top plane of the corresponding precast PC slab 100, thus not affecting the pouring of the cast-in-place layer 200. Furthermore, the tie rod protective sleeve 60 and the two support protective sleeves 70 are both stainless steel or PVC sleeves. Using materials that do not easily solidify with concrete as protective sleeves facilitates later removal.
[0044] In this application, when the main tie rod 10 is rotated by the tightening torsion bar at any end, the portal frame and the leveling lateral side are brought closer together to apply a leveling force. Under the continuous pressure of the leveling force, the misaligned joints of the two adjacent precast PC slabs 100 are brought together and leveled. The overall leveling method is simple, convenient to disassemble and assemble, and flexible to reuse. At the same time, the protective sleeve prevents solidification with the cast-in-place layer 200 and is easy to remove and reuse multiple times.
[0045] In addition, this application also provides a method for using a PC precast panel joint installation flatness control device, including the above-mentioned leveling device, comprising the following steps:
[0046] S1. Installing holes are reserved at the joint of any two adjacent PC prefabricated panels; semi-circular grooves are reserved on both sides of any PC prefabricated panel; the semi-circular grooves between any two adjacent PC prefabricated panels overlap to form an installation hole.
[0047] S2. The leveling beam is threaded onto the first threaded section. The main tie rod is tightened and passes through the mounting hole from bottom to top. After the bottom installation is completed, the main tie rod is tightened and passes through the plate seam.
[0048] S3. Install protective sleeves on the two vertical supports and the main tie rod, and connect the second threaded section of the portal frame body; pre-install the protective sleeves to prevent condensation with the cast-in-place layer.
[0049] S4. Insert and tighten the torsion bar through the first and second threaded sections and apply pre-tightening force; this achieves bidirectional adjustability at both ends, making the adjustment method more convenient.
[0050] S5. Apply force to rotate the fastening torsion bar of the first threaded section, and after the joint between the two adjacent PC precast panels is leveled, position and lock it; with the bottom surfaces of the two adjacent PC precast panels on the same plane as a reference, complete the leveling operation.
[0051] S6. Pour the cast-in-place layer, cure for 12 hours, remove the leveling device, and clean the protective cover for reuse.
[0052] In this application, by adopting the above methods, it is possible to ensure construction quality, improve construction efficiency, and guarantee the quick and convenient disassembly and assembly, as well as the flexible reusability of the leveling device.
[0053] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this disclosure, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this specification, which are not provided in detail for the sake of brevity.
[0054] Additionally, to simplify the description and discussion, and to avoid obscuring one or more embodiments of this specification, well-known power / ground connections for other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be illustrated in block diagram form to avoid obscuring one or more embodiments of this specification, and this also takes into account the fact that the details of implementation of these block diagram apparatuses are highly dependent on the platform on which one or more embodiments of this specification will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details have been set forth to describe exemplary embodiments of this disclosure, it will be apparent to those skilled in the art that one or more embodiments of this specification may be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.
[0055] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the scope of protection of this disclosure.
Claims
1. A PC precast panel joint installation flatness control device, comprising a leveling device passing through the joint between any two adjacent PC precast panels; characterized in that, The leveling device includes: a tightening main tie rod penetrating the plate seam, a bottom leveling assembly connected to the exposed first end of the tightening main tie rod, and a top flattening assembly connected to the exposed second end of the tightening main tie rod; wherein... The bottom leveling assembly includes a leveling beam that fits between the bottom planes of two adjacent PC precast panels; The top flattening assembly includes a portal frame; the portal frame has two vertical legs that press against the top plane of two adjacent PC precast panels; The exposed first end of the tightening main tie rod has a first threaded section that is threadedly connected to the leveling crossbeam, and the exposed second end of the tightening main tie rod has a second threaded section that is threadedly connected to the portal frame body. Both the first threaded section and the second threaded section are fitted with fastening torsion bars for applying force; When any of the fastening torsion bars drives the main tensioning rod to rotate, the leveling beam and the portal frame body move away from or closer to each other. The leveling device also includes multiple protective sleeves, which are correspondingly slidably mounted on the middle section of the two vertical support legs and the tightening main tie rod, and the bottom of each of the multiple protective sleeves is attached to the top plane of the corresponding PC precast panel.
2. The PC precast panel joint installation flatness control device according to claim 1, characterized in that, The lower surface of the leveling beam is connected to a first nut, and the first threaded section passes through the leveling beam and is threadedly connected to the first nut.
3. The PC precast panel joint installation flatness control device according to claim 2, characterized in that, The portal frame includes: the two vertical supports, and a horizontal brace connecting the tops of the two vertical supports; wherein, The upper surface of the cross brace is connected to a second nut, and the second threaded section passes through the cross brace and is threadedly connected to the second nut.
4. The PC precast panel joint installation flatness control device according to claim 3, characterized in that, When both the first and second threaded sections are fitted with tightening torsion bars for applying force... A first through hole is provided transversely on the first threaded section, and a first fastening torsion bar is inserted and connected in the first through hole; The second threaded section has a second through hole extending laterally, and a second fastening torsion bar is inserted into the second through hole.
5. The PC precast panel joint installation flatness control device according to claim 3, characterized in that, The first threaded segment and the second threaded segment have opposite thread directions.
6. The PC precast slab joint installation flatness control device according to claim 5, characterized in that, The first nut is welded to the center point of the leveling beam. The second nut is welded to the center point of the cross brace, and the first nut and the second nut are located at the same center.
7. The PC precast slab joint installation flatness control device according to claim 1, characterized in that, The length of the main tightening rod is ≥600mm, and the height of the portal frame is ≥300mm; The lengths of both the first threaded segment and the second threaded segment are greater than 120 mm.
8. The PC precast panel joint installation flatness control device according to claim 1, characterized in that, All of the protective sleeves are stainless steel sleeves or PVC sleeves.