Recoverable laminated slab mold hanging device
The recyclable composite slab formwork device, composed of support rods, threaded rods, templates, weights, and keel pipes, solves the problems of grout leakage, formwork bulging, and seepage in cast-in-place composite slab strips, achieving rapid installation, stable construction, and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI CONSTR ENG CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-08
AI Technical Summary
Existing composite slabs and cast-in-place strips are prone to grout leakage and formwork bulging during the casting process, and the PVC sleeve formwork makes it difficult to seal the holes, posing a risk of leakage.
The recyclable composite slab hoisting device consists of support rods, lead screws, templates, weights, first nuts, and keel pipes. The support rods span the top of the composite slabs, the lead screws are connected to the support rods, the templates span between the composite slabs, the keel pipes are located at the bottom of the templates, and the weights and nuts work together to ensure the stability of the templates, enabling rapid installation and disassembly.
It achieves stability and reliability of cast-in-place composite slab strips, avoids the risks of grout leakage, formwork bulging and seepage, improves construction speed and quality, reduces construction costs, and the formwork can be reused.
Smart Images
Figure CN224213771U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated building technology, and more specifically, to a recyclable composite slab hoisting device. Background Technology
[0002] Prefabricated buildings are ushering in a new development opportunity, and prefabricated structures have gradually become a common structural form for residential buildings. The roof slabs of prefabricated residential buildings often adopt a composite slab + cast-in-place surface layer structure, but there are cast-in-place strips between the composite slabs. Currently, there are two most common methods for erecting formwork for composite slab cast-in-place strips. One method is to use a scaffolding support system, with the bottom of the formwork reinforced by primary and secondary joists. However, because composite slabs often use independent support systems, the scaffolding support system for the cast-in-place strip cannot be effectively connected to the scaffolding on both sides. During concrete pouring, the vibration of the vibrator can easily cause displacement of the cast-in-place strip support system, resulting in grout leakage and formwork bulging. The other method is a suspended formwork system using PVC sleeves. Tie rods with PVC sleeves are installed at the cast-in-place strip, and cement blocks are placed at the upper cast-in-place layer of the composite slab. The tie rods pass through the entire strip.
[0003] However, the above technology has the following drawbacks:
[0004] 1. The formwork is erected using a scaffolding support system, with the bottom of the formwork reinforced by primary and secondary joists. However, the scaffolding support system for cast-in-place slabs cannot be effectively connected to the scaffolding on both sides. During the concrete pouring process, the vibration of the vibrator can easily cause displacement of the cast-in-place slab support system, resulting in grout leakage and formwork bulging.
[0005] 2. The formwork method using PVC sleeves will cause the PVC sleeves to remain in the cast-in-place slab strip, making it difficult to seal the holes in the top slab and posing a great risk of leakage later. Utility Model Content
[0006] The purpose of this utility model includes, for example, providing a recyclable composite slab formwork device that can improve quality problems such as grout leakage, formwork bulging, and seepage in cast-in-place composite slabs.
[0007] The embodiments of this utility model can be implemented as follows:
[0008] In a first aspect, this utility model provides a recyclable composite plate lifting device, which cooperates with the composite plate and includes:
[0009] Support rod, lead screw, template, jack, first nut, and keel tube;
[0010] The support rod spans the top of two adjacent composite slabs; a cast-in-place space is formed between the two adjacent composite slabs; the top of the lead screw is connected to the support rod, the lead screw is located between the two composite slabs, and the bottom of the lead screw extends away from the support rod.
[0011] The bottom of the lead screw passes through the template, and the template spans across the two composite plates; the keel tube is located at the bottom of the template, the pin is disposed at the bottom of the keel tube, and the first nut is sleeved on the lead screw; the first nut is threadedly connected to the lead screw, and the first nut is configured to move the pin toward the template so that the keel tube holds the template against the bottom surface of the composite plate.
[0012] In an optional embodiment, the support rod is kept perpendicular to the lead screw.
[0013] In an optional embodiment, the support rod is welded to the lead screw as a single unit.
[0014] In an optional embodiment, the keel tube includes two tube bodies symmetrically arranged on both sides of the lead screw.
[0015] In an optional embodiment, the pipe body is made of steel.
[0016] In an optional embodiment, the template is made of wood.
[0017] In an optional embodiment, a second nut is further included; the second nut is threadedly connected to the lead screw; the second nut is located between the template and the support rod, and the second nut abuts against the top of the template.
[0018] In an optional embodiment, the second nut is a tapered connecting nut.
[0019] In an optional embodiment, the length of the support rod on the composite slab along one side of the width direction of the cast-in-place space is greater than or equal to 100 mm.
[0020] In an optional embodiment, the diameter of the support rod is greater than 20 mm.
[0021] The beneficial effects of this utility model embodiment include, for example:
[0022] This recyclable composite slab formwork device includes support rods, threaded rods, formwork, clamps, a first nut, and a keel pipe. The support rods, threaded rods, clamps, first nut, and keel pipe work together to stably position the formwork at the bottom of the cast-in-place space, ensuring stability and reliability during pouring. After pouring, the support rods, threaded rods, clamps, and keel pipe can be removed simply by unloading the first nut for reuse. The keel pipe also provides more stable support for the formwork base. When the first nut is configured to move the clamps towards the formwork, the keel pipe holds the formwork against the bottom surface of the composite slab. In summary, this formwork device offers fast and convenient installation, eliminates the risk of leakage after construction, and allows for the reuse of threaded rods, thus accelerating construction progress, reducing construction costs, and ensuring the quality of the cast-in-place composite slab. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the recyclable composite plate lifting device according to an embodiment of the present invention.
[0025] Icons: 11-Support rod; 12-Threaded rod; 13-Formwork; 14-Pin; 15-First nut; 16-Keel pipe; 17-Pipe body; 18-Second nut; 20-Composite slab; 21-Cast-in-place space. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0031] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0032] Please refer to Figure 1 This embodiment provides a recyclable composite plate lifting mold device, which cooperates with the composite plate 20, including a support rod 11, a lead screw 12, a template 13, a weight 14, a first nut 15, and a keel tube 16;
[0033] The support rod 11 spans the top of two adjacent composite slabs 20; a cast-in-place space 21 is formed between the two adjacent composite slabs 20; the top of the screw rod 12 is connected to the support rod 11, the screw rod 12 is located between the two composite slabs 20, and the bottom of the screw rod 12 extends away from the support rod 11.
[0034] The bottom of the lead screw 12 is fitted with a template 13, and the template 13 spans across the two composite plates 20. The keel tube 16 is located at the bottom of the template 13, the pin 14 is set at the bottom of the keel tube 16, and the first nut 15 is fitted onto the lead screw 12. The first nut 15 is threadedly connected to the lead screw 12, and the first nut 15 is configured to move the pin 14 toward the template 13 so that the keel tube 16 holds the template 13 against the bottom surface of the composite plate 20.
[0035] The recyclable composite slab formwork device of this scheme, with its support rod 11, threaded rod 12, clamp 14, first nut 15, and keel pipe 16 working together, ensures that the formwork 13 can be stably set at the bottom of the cast-in-place space 21, thereby guaranteeing stability and reliability during pouring. After pouring, the support rod 11, threaded rod 12, clamp 14, and keel pipe 16 can be removed simply by unloading the first nut 15 for reuse. The keel pipe 16 also provides more stable support for the bottom plate of the formwork 13. When the first nut 15 is configured to move the clamp 14 toward the formwork 13, the keel pipe 16 holds the formwork 13 against the bottom surface of the composite slab 20. Thus, this formwork device is quick and easy to install, has no risk of leakage after construction, and the threaded rod 12 can be reused, accelerating construction progress, reducing construction costs, and ensuring the construction quality of the cast-in-place slab strip of the composite slab 20.
[0036] In an optional embodiment, the keel pipe 16 includes two pipe bodies 17, which are symmetrically arranged on both sides of the lead screw 12. The symmetrical arrangement of the pipe bodies 17 can ensure that the bottom of the template 13 is evenly supported, thereby ensuring that the template 13 is in close contact with the bottom surface of the composite slab 20, so as to ensure the quality of the cast-in-place slab strip.
[0037] It should be noted that in this embodiment of the present invention, in an optional implementation, the material of the pipe body 17 is steel. Steel pipe, as the keel pipe 16, has the advantages of low cost, good versatility, and excellent structural strength. It is easy to understand that in other embodiments of the present invention, the keel pipe 16 may only have one pipe body 17, and the material of the pipe body 17 may be aluminum pipe, alloy pipe, etc.; this is merely an example and not a limitation.
[0038] In an optional embodiment, the template 13 is made of wood. Wooden template 13 has the advantages of low cost, easy availability of materials, and good reusability. It should be noted that in other embodiments of this utility model, the template 13 can also be made of steel, aluminum, etc.; this is merely an example and not a limitation.
[0039] from Figure 1 It can also be seen that, in an optional embodiment, the support rod 11 is kept perpendicular to the lead screw 12. This arrangement can reduce the length of the lead screw 12 in the cast-in-place space 21, thereby ensuring the quality of the cast-in-place slab strip after casting.
[0040] In an optional embodiment, the support rod 11 and the lead screw 12 are welded together. This arrangement has the advantages of good structural strength and convenient processing.
[0041] In an optional embodiment, the recyclable composite slab formwork device further includes a second nut 18; the second nut 18 is threadedly connected to the lead screw 12; the second nut 18 is located between the formwork 13 and the support rod 11, and the second nut 18 abuts against the top of the formwork 13. This ensures the accuracy and stability of the position of the formwork 13, thereby ensuring the quality of the cast-in-place slab strip after pouring.
[0042] In an optional embodiment, the second nut 18 is a conical connecting nut.
[0043] In an optional embodiment, the length of the support rod 11 on the composite slab 20 along one side of the width direction of the cast-in-place space 21 is greater than or equal to 100 mm. This arrangement ensures a stable connection between the formwork 13 and the composite slab 20.
[0044] In an optional embodiment, the diameter of the support rod 11 is greater than 20 mm. This ensures a stable connection between the support rod 11, the template 13, and the composite slab 20, while also reducing the impact of the support rod 11 on the cast-in-place slab strip during pouring.
[0045] When in use, the top support rod 11 is made of threaded steel bar with a diameter greater than 20mm. The length is adjusted according to the width of the composite cast-in-place slab strip, and the support length on each side is not less than 100mm.
[0046] The support rod 11 is welded to the lead rod 12, and the lead rod 12 is threadedly connected to the second nut 18. The length of the lead rod 12 and the connecting nut of the cone body is equal to the thickness of the composite plate 20. The lead rod 12 is threadedly connected to the second nut 18.
[0047] After the composite slab 20 is installed, the support rod 11 is installed in the middle of the cast-in-place slab strip of the composite slab 20. The support rod 11 supports the composite slab 20 with a length of not less than 100mm on each side.
[0048] Drill holes in template 13 at 600mm intervals, install template 13, and use Φ48 double steel pipes as the main keel at the bottom of template 13, with the direction perpendicular to the cast-in-place slab strip. The steel pipes are reinforced with U-shaped clamps (8) and the first nut 15.
[0049] In summary, this utility model provides a recyclable composite plate lifting device, which has at least the following advantages:
[0050] Because there are many prefabricated residential composite slabs 20, the cast-in-place slab strips often suffer from problems such as bulging and grout leakage due to improper installation and reinforcement of the formwork 13. This formwork lifting device is fast and convenient to install, and there is no risk of leakage after construction. In addition, the recyclable screw rod 12 can be reused, which can speed up the construction progress, reduce the construction cost, and ensure the construction quality of the composite slab 20 cast-in-place slab strips.
[0051] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A recyclable composite slab lifting device, which cooperates with the composite slab, characterized in that, include: Support rod (11), lead screw (12), template (13), jack (14), first nut (15) and keel tube (16); The support rod (11) spans the top of two adjacent composite slabs; a cast-in-place space (21) is formed between the two adjacent composite slabs; the top of the screw rod (12) is connected to the support rod (11), the screw rod (12) is located between the two composite slabs, and the bottom of the screw rod (12) extends away from the support rod (11). The bottom of the lead screw (12) is through the template (13), and the template (13) spans the two composite plates; the keel tube (16) is located at the bottom of the template (13), the pin (14) is disposed at the bottom of the keel tube (16), and the first nut (15) is sleeved on the lead screw (12); the first nut (15) is threadedly connected to the lead screw (12), and the first nut (15) is configured to move the pin (14) toward the template (13) so that the keel tube (16) holds the template (13) against the bottom surface of the composite plate.
2. The recyclable composite plate lifting device according to claim 1, characterized in that: The support rod (11) is perpendicular to the lead screw (12).
3. The recyclable composite plate lifting device according to claim 1, characterized in that: The support rod (11) and the lead screw (12) are welded together.
4. The recyclable composite plate lifting device according to claim 1, characterized in that: The keel tube (16) includes two tube bodies (17), which are symmetrically arranged on both sides of the lead screw (12).
5. The recyclable composite plate hoisting device according to claim 4, characterized in that: The tube body (17) is made of steel.
6. The recyclable composite plate hoisting device according to claim 1, characterized in that: The template (13) is made of wood.
7. The recyclable composite plate lifting device according to claim 1, characterized in that: It also includes a second nut (18); the second nut (18) is threadedly connected to the lead screw (12); the second nut (18) is located between the template (13) and the support rod (11), and the second nut (18) abuts against the top of the template (13).
8. The recyclable composite plate lifting device according to claim 7, characterized in that: The second nut (18) is a conical connecting nut.
9. The recyclable composite plate lifting device according to claim 1, characterized in that: Along one side of the width direction of the cast-in-place space (21), the length of the support rod (11) on the composite plate is greater than or equal to 100 mm.
10. The recyclable composite plate hoisting device according to claim 1, characterized in that: The diameter of the support rod (11) is greater than 20 mm.