BDF box body anti-floating device

Abstract

The BDF box body anti-floating device comprises a main rod, a handle, a stress claw, an inhaul cable and a transverse rod, the main rod comprises a threaded rod, a groove rod, a fastening sleeve and a fastening nut, a rectangular groove is formed in the top of the groove rod, a threaded groove is formed in the bottom of the groove rod, the threaded rod is connected into the threaded groove in a threaded mode, and a hinge rivet is installed at the top of the rectangular groove. The pair of stress claws are rotatably connected into a rectangular groove of the groove rod through hinge rivets, the fastening sleeve is arranged on the threaded rod and the groove rod in a sleeving mode, the fastening nut is connected to the threaded rod in a threaded mode and located below the fastening sleeve, the handle is fixedly connected to the bottom of the threaded rod, the top of the inhaul cable is hung on the handle, and the bottom of the inhaul cable is connected with the transverse rod. A PVC internal thread sleeve is pre-buried in the BDF box body, the groove rod extends into the PVC internal thread sleeve, and the stress claw is jacked and opened through the fastening sleeve and is clamped on the inner wall of the PVC internal thread sleeve. The anti-floating box is simple in structure, good in anti-floating effect and capable of preventing the anti-floating pressing ribs from being tied into the box body.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, and in particular to a BDF box anti-buoyancy device. Background Technology

[0002] With economic development and improved living standards, people's demands for building comfort and usability are gradually increasing. Buildings not only require large spans and open spaces, but also flexible partitioning of usable areas; they also require increasing floor height within a safe range while maintaining a limited overall height. Since the Ministry of Housing and Urban-Rural Development began promoting the construction technology of large-span cast-in-place hollow concrete slabs in 2004, the development of filling materials in the cavities of cast-in-place hollow slabs has been continuously iterating and upgrading. However, in existing anti-buoyancy technologies, the upper and lower reinforcing meshes of the thin-walled hollow box are fixed with low-carbon steel wire, which is then passed through the formwork and firmly fixed to the formwork frame to prevent the inner formwork from floating. This method has poor anti-buoyancy effect and results in the anti-buoyancy reinforcement being embedded in the box. After the formwork is removed, a large amount of low-carbon steel wire remains on the concrete slab surface, which is detrimental to finished product protection and site cleanup. Summary of the Invention

[0003] This invention aims to solve the problems of poor anti-buoyancy effect and the problem of anti-buoyancy ribs being embedded in the box body in the existing technology, and provides a BDF box anti-buoyancy device.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: A BDF box anti-buoyancy device includes a main rod, a handle, force-bearing claws, a cable, and a crossbar. The main rod includes a threaded rod, a grooved rod, a fastening sleeve, and a fastening nut. The grooved rod has a rectangular groove at the top and a threaded groove at the bottom. The threaded rod is threadedly connected to the threaded groove. A hinged rivet is installed at the top of the rectangular groove. A pair of force-bearing claws are rotatably connected to the rectangular groove of the grooved rod through the hinged rivet. The fastening sleeve is sleeved on the threaded rod and the grooved rod. The fastening nut is threadedly connected to the threaded rod and is located below the fastening sleeve. The handle is fixed to the bottom of the threaded rod. The top of the cable is hung on the handle, and the bottom is connected to the crossbar. A PVC internally threaded sleeve is pre-embedded in the BDF box. The grooved rod extends into the PVC internally threaded sleeve. The force-bearing claws are lifted and opened by the fastening sleeve and locked onto the inner wall of the PVC internally threaded sleeve.

[0005] Specifically, the handle includes a cylindrical pad fixed to the bottom of the threaded rod, a hanging ring vertically inserted on the pad, and a cable positioning ring at the bottom of the hanging ring.

[0006] In particular, the force-bearing claw has a conical structure, and the cone head matches the internal thread of the PVC internal thread sleeve.

[0007] Specifically, the diameter of the fastening nut is larger than the diameter of the fastening sleeve.

[0008] The beneficial effects of this utility model are: by setting a main rod, handle, force-bearing claw, cable, and crossbar, the overall structure is simple, easy to manufacture, and low in cost; it can prevent the pressure ribs from being crushed into the box body and damaging the finished product; some components can be recycled, and it is convenient to assemble and disassemble and simple to operate. Attached Figure Description

[0009] Figure 1 It is a structural diagram of the utility model;

[0010] Figure 2 This is a schematic diagram of the main rod structure of this utility model, in which the fastening sleeve is omitted;

[0011] Figure 3 This is a schematic diagram showing the connection between the main rod, handle, and force-bearing claw of this utility model;

[0012] In the diagram: 1-Main rod; 101-Threaded rod; 102-Groove rod; 103-Fasting sleeve; 104-Fasting nut; 105-Rectangular groove; 106-Threaded groove; 107-Hinged rivet; 2-Handle; 201-Pan; 202-Hanging ring; 203-Cable positioning ring; 3-Force-bearing claw; 4-Cable; 5-Crossbar; 6-BDF housing; 7-PVC internal threaded sleeve;

[0013] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] like Figure 1-Figure 3 As shown, a BDF box anti-buoyancy device includes a main rod 1, a handle 2, force-bearing claws 3, a cable 4, and a crossbar 5. The main rod 1 includes a threaded rod 101, a grooved rod 102, a fastening sleeve 103, and a fastening nut 104. The grooved rod 102 has a rectangular groove 105 at the top and a threaded groove 106 at the bottom. The threaded rod 101 is threaded into the threaded groove 106. A hinged rivet 107 is installed at the top of the rectangular groove 105. A pair of force-bearing claws 3 are rotatably connected to the rectangular groove 105 of the grooved rod 102 through the hinged rivet 107. The fastening sleeve 103 is sleeved on the threaded rod 101 and the grooved rod 102. The fastening nut 104 is threaded onto the threaded rod 101 and is located below the fastening sleeve 103. The diameter of the fastening nut 104 is larger than the diameter of the fastening sleeve 103.

[0016] The handle 2 is fixed to the bottom of the threaded rod 101. The top of the cable 4 is hung on the handle 2 and the bottom is connected to the crossbar 5. The handle 2 includes a cylindrical pad 201 fixed to the bottom of the threaded rod 101. A hanging ring 202 is vertically inserted on the pad 201. A cable positioning ring 203 is provided at the bottom of the hanging ring 202.

[0017] A PVC internal threaded sleeve 7 is pre-embedded inside the BDF housing 6. The grooved rod 102 extends into the PVC internal threaded sleeve 7. The force-bearing claw 3 is lifted and opened by the fastening sleeve 103 and is locked on the inner wall of the PVC internal threaded sleeve 7. The force-bearing claw 3 has a conical structure, and the conical part matches the internal thread of the PVC internal threaded sleeve 7.

[0018] In operation, a PVC internally threaded sleeve 7 is pre-embedded in the BDF housing 6. The main rod 1 is placed inside the pre-embedded PVC internally threaded sleeve 7, ensuring that the force-bearing claw 3 is fully inserted into the hole. The fastening nut 104 is manually rotated, causing the fastening sleeve 103 to move into the hole. During the movement, the force-bearing claw 3 opens, and the conical end engages with the inner surface of the PVC internally threaded sleeve 7. After ensuring a stable engagement, the pull cable 4 is attached via the handle 2, and the pull cable 4 is connected to the crossbar 8. During concrete pouring, tension is generated to achieve the purpose of anti-buoyancy. After the concrete pouring is completed and reaches the qualified strength, the handle 2 is rotated to remove and recycle the threaded rod 101 connected to the grooved rod 102 via the threaded structure, achieving the effect of reuse and realizing the purpose of convenient disassembly and assembly and simple operation.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0020] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0021] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A BDF (Body Flood Control Device) for Anti-Buoyancy of a Box, characterized in that, The system includes a main rod (1), a handle (2), force-bearing claws (3), a cable (4), and a crossbar (5). The main rod (1) includes a threaded rod (101), a grooved rod (102), a fastening sleeve (103), and a fastening nut (104). The grooved rod (102) has a rectangular groove (105) at the top and a threaded groove (106) at the bottom. The threaded rod (101) is threaded into the threaded groove (106). A hinged rivet (107) is installed at the top of the rectangular groove (105). A pair of force-bearing claws (3) are rotatably connected to the rectangular groove (105) of the grooved rod (102) through the hinged rivet (107). The fastening sleeve (104) is rotatably connected to the rectangular groove (105) of the grooved rod (102) through the hinged rivet (107). 03) The fastening nut (104) is threaded onto the threaded rod (101) and the grooved rod (102), and the fastening nut (104) is located below the fastening sleeve (103). The handle (2) is fixed to the bottom of the threaded rod (101). The top of the cable (4) is hung on the handle (2), and the bottom is connected to the crossbar (5). A PVC internal threaded sleeve (7) is pre-embedded in the BDF box (6). The grooved rod (102) extends into the PVC internal threaded sleeve (7). The force claw (3) is lifted and opened by the fastening sleeve (103) and locked on the inner wall of the PVC internal threaded sleeve (7).

2. The BDF box anti-buoyancy device according to claim 1, characterized in that, The handle (2) includes a cylindrical pad (201) fixed to the bottom of the threaded rod (101), a hanging ring (202) is vertically inserted on the pad (201), and a cable positioning ring (203) is provided at the bottom of the hanging ring (202).

3. The BDF box anti-buoyancy device according to claim 1, characterized in that, The force-bearing claw (3) has a conical structure, and the cone head matches the internal thread of the PVC internal thread sleeve (7).

4. The BDF box anti-buoyancy device according to claim 1, characterized in that, The diameter of the fastening nut (104) is larger than the diameter of the fastening sleeve (103).

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