Detachable and reusable slurry-leakage-proof lower hanging ball fixing device for wall formwork

Abstract

The utility model belongs to the technical field of building tools, and discloses a detachable and reusable wall formwork slurry leakage prevention lower hanging ball fixing device which comprises a lower hanging ball body, an anchoring part and an outer screw rod, internal thread through holes are formed in the middle of the left side and the middle of the right side of the lower hanging ball body, external threads are arranged at the end of the anchoring part and the end of the outer screw rod, and the lower hanging ball body is fixedly connected with the anchoring part. The anchoring part and the outer screw rod are detachably and fixedly connected with the lower hanging ball body through the internal thread through holes respectively; a mountain-shaped clamp is arranged on the outer screw rod, and a locking nut is in threaded connection with the position, located on the outer side of the mountain-shaped clamp, of the outer rod. Through the lower hanging ball body, the anchoring part and the outer screw rod which are in threaded connection, rapid disassembly and assembly are achieved, the screw rod and the lower hanging ball body can be completely disassembled and recycled, and the construction cost is reduced. The double dismounting mechanism of the outer screw rod and the auxiliary rod ensures that the lower hanging ball body can be smoothly dismounted even if the bonding resistance of concrete is too large, and part retention is avoided.

Description

Technical Field

[0001] This utility model relates to the field of construction tools technology, and more specifically, to a detachable and reusable wall formwork anti-leakage grout hanging ball fixing device. Background Technology

[0002] As societal aesthetic standards continue to rise, people's requirements for buildings are no longer limited to safety, usability, and economic performance; they are increasingly focusing on the aesthetics of the building's appearance. However, common quality defects during the construction of the main structure (such as formwork bulging, grout leakage, and displacement) seriously affect the visual appeal of the concrete structure. Traditional formwork construction techniques are prone to problems such as inadequate reinforcement and positioning deviations at the joints between upper and lower layers, leading to misalignment and grout leakage at the joints. This not only affects the appearance quality but may also reduce the overall integrity of the structure.

[0003] Currently, some construction companies are using pre-embedded anchor bolts (lower-hanging balls) to optimize the fixing method of exterior walls and stairwell formwork. This technology, by pre-embedding lower-hanging ball components in the lower structure, allows for precise positioning and secure fixing of the upper formwork, thereby effectively controlling joint quality. However, existing lower-hanging ball devices still have the following problems during construction:

[0004] Traditional anchor bolts require cutting off the exposed portion after concrete pouring, resulting in steel waste, non-reusability, and increased construction costs. Furthermore, the cut bolt ends are prone to corrosion, affecting wall durability, and the cut surfaces may damage the concrete surface, increasing the workload for later repairs. A large amount of waste rebar ends is difficult to recycle, failing to meet green construction requirements and increasing the burden of construction waste disposal. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a detachable and reusable wall formwork anti-leakage grout hanging ball fixing device.

[0006] To address the problems in the background technology, this utility model adopts the following technical solution:

[0007] A detachable and reusable wall template anti-leakage grouting lower ball fixing device includes a lower ball, an anchor and an external thread. The lower ball has internal threaded through holes in the middle of both sides. The anchor and the external thread are provided with external threads at their ends. The anchor and the external thread are detachably and fixedly connected to the lower ball through the internal threaded through holes.

[0008] The outer screw is provided with a mountain-shaped clamp, and a locking nut is threadedly connected to the outer screw and located on the outside of the mountain-shaped clamp;

[0009] An auxiliary rod is fixedly connected in the internal threaded through hole connected to the external screw. The end of the external screw is provided with a receiving hole that matches the auxiliary rod. The auxiliary rod extends to the outside of the lower hanging ball.

[0010] When the external screw is connected to the lower ball, the auxiliary rod extends into the receiving hole, and a rectangular bolt head is fixedly connected to the end of the auxiliary rod and the external screw away from the lower ball.

[0011] As a further description of the above technical solution: the lower hanging ball is hemispherical or frustum-shaped, and the lower hanging ball is covered with a rubber sleeve that is adapted to it.

[0012] As a further description of the above technical solution: the end of the anchor far from the lower ball is I-shaped, L-shaped, J-shaped, U-shaped or frustum-shaped.

[0013] As a further description of the above technical solution: the receiving hole is an internally threaded hole, and the auxiliary rod is provided with an external thread that is adapted to the receiving hole. When the external thread is connected to the lower hanging ball, the auxiliary rod is threadedly connected to the receiving hole.

[0014] As a further description of the above technical solution: the adjacent sides of the rectangular bolt head are provided with an arc transition.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] I. Detachable and Reusable: The threaded connection between the lower hanging ball, anchor, and external threaded rod enables quick assembly and disassembly, allowing the threaded rod and lower hanging ball to be completely removed and recycled, reducing construction costs. The dual removal mechanism of the external threaded rod and auxiliary rod ensures that the lower hanging ball can be easily disassembled even when the concrete adhesion resistance is too great, avoiding component retention.

[0017] II. Highly efficient grout leakage prevention: The mountain-shaped clamp and locking nut tightly engage the template, and the hanging ball makes flat contact with the wall, effectively preventing grout leakage during pouring. The rubber sleeve enhances the sealing and further reduces the risk of grout leakage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 For the present utility model Figure 1 A split diagram;

[0020] Figure 3 This is a schematic diagram of the structure of the hanging ball of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the lower ball connecting anchor and the outer screw of this utility model;

[0022] Figure 5 This is a schematic diagram of the device of this utility model in use.

[0023] Explanation of the labels in the diagram:

[0024] 1. Lower hanging ball; 2. Anchor; 3. External threaded rod; 4. Internal threaded through hole; 5. Mountain-shaped clamp; 6. Locking nut; 7. Auxiliary rod; 8. Accommodation hole; 9. Rectangular bolt head; 10. Rubber sleeve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 A detachable and reusable wall template anti-leakage grout hanging ball fixing device includes a hanging ball 1, an anchor 2 and an external thread 3. The middle of the left and right sides of the hanging ball 1 is provided with an internal thread through hole 4. The ends of the anchor 2 and the external thread 3 are provided with external threads. The anchor 2 and the external thread 3 are detachably and fixedly connected to the hanging ball 1 through the internal thread through hole 4 respectively.

[0027] The outer screw 3 is equipped with a U-shaped clamp 5, and a locking nut 6 is threaded onto the outer screw 3 and located outside the U-shaped clamp 5. For example... Figure 5 As shown, the mountain-shaped clip 5 and the locking nut 6 are used to lock the wall formwork.

[0028] When using this hanging ball fixing device, the anchor 2 is fixed to one side of the hanging ball 1 via a threaded connection and is pre-embedded in the concrete wall. The surface of the hanging ball 1 is flush with the edge of the wall to ensure the flatness of the subsequent formwork installation. The external thread 3 is screwed into the internal threaded through hole 4 on the other side of the hanging ball 1, and the wall formwork is clamped and fixed by the U-shaped clamp 5 and the locking nut 6. The serrated surface of the U-shaped clamp engages with the formwork, and the locking nut 6 applies pressure to make the formwork fit tightly against the edge of the wall to prevent grout leakage.

[0029] After the concrete has hardened, the locking nut 6 and the U-shaped clip 5 are loosened, and then the formwork is removed. The lower hanging ball 1 is detached from the anchor 2 by loosening the outer threaded rod 3. Then, the outer threaded rod 3 and the lower hanging ball 1 are removed from the concrete wall for subsequent reuse. Any pits formed in the concrete wall are repaired with repair grout, completing the entire construction process.

[0030] Furthermore, to ensure the removal of the lower sphere 1 from the solidified concrete wall, this solution is further improved as follows:

[0031] An auxiliary rod 7 is fixedly connected in the internal threaded through hole 4 connected to the external screw 3. The end of the external screw 3 is provided with a receiving hole 8 that is adapted to the auxiliary rod 7. The auxiliary rod 7 extends to the outside of the lower hanging ball 1. When the external screw 3 is connected to the lower hanging ball 1, the auxiliary rod 7 extends into the receiving hole 8. A rectangular bolt head 9 is fixedly connected to the end of the auxiliary rod 7 and the external screw 3 away from the lower hanging ball 1.

[0032] By rotating the rectangular bolt head 9 at the end of the outer screw 3 with a tool, the outer screw 3 is unscrewed from the lower hanging ball 1. Then, by rotating the rectangular bolt head 9 at the end of the auxiliary rod 7 with a tool, the lower hanging ball 1 is unscrewed from the inside of the concrete wall. In this embodiment, a dual removal mechanism is adopted. Both the outer screw 3 and the auxiliary rod 7 can be operated independently. If the outer screw 3 is difficult to remove along with the lower hanging ball 1 due to concrete adhesion, the entire lower hanging ball 1 can be removed directly through the auxiliary rod 7 after removing the lower hanging ball 1, avoiding component retention.

[0033] The lower hanging ball 1 is hemispherical or frustum-shaped, and is fitted with a rubber sleeve 10. The rubber sleeve 10 reduces friction, making it easier to remove the lower hanging ball 1 from the concrete wall, and also enhances the sealing of the contact surface, reducing the risk of grout leakage. The combination of the hemispherical / frustum-shaped lower hanging ball 1 and the rubber sleeve 10 reduces resistance during removal and protects the integrity of the concrete edges.

[0034] It should be noted that both the external threaded rod 3 and the auxiliary rod 7 use rectangular bolt heads 9, which can be operated with general-purpose tools without special equipment, thus improving construction efficiency. The auxiliary rod 7 is inserted into the receiving hole 8 of the external threaded rod 3 to form internal support and prevent the threaded rod from bending or loosening due to pouring pressure.

[0035] Furthermore, the end of the anchor 2 furthest from the lower ball 1 is shaped like an L, J, U, or frustum. These irregular shapes (such as L, J, and U) form a mechanical interlock after the concrete hardens, increasing pull-out resistance and preventing the anchor 2 from being pulled out. The receiving hole 8 is an internally threaded hole, and the auxiliary rod 7 has an external thread that matches the receiving hole 8. When the external threaded rod 3 is connected to the lower ball 1, the auxiliary rod 7 is threadedly connected to the receiving hole 8. The threaded connection between the auxiliary rod 7 and the external threaded rod 3 enhances overall rigidity. A rounded transition is provided between adjacent sides of the rectangular bolt head 9.

[0036] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A detachable and reusable wall formwork anti-leakage ball fixing device, comprising a lower hanging ball (1), an anchor (2), and an external threaded rod (3), characterized in that: The lower ball (1) has internal threaded through holes (4) in the middle of both sides. The ends of the anchor (2) and the external screw (3) are provided with external threads. The anchor (2) and the external screw (3) are detachably fixed to the lower ball (1) through the internal threaded through holes (4). The outer screw (3) is provided with a mountain-shaped clip (5), and a locking nut (6) is threaded on the outer screw (3) and located on the outer side of the mountain-shaped clip (5). An auxiliary rod (7) is fixedly connected in the internal threaded through hole (4) connected to the external screw (3). The end of the external screw (3) is provided with a receiving hole (8) that is adapted to the auxiliary rod (7). The auxiliary rod (7) extends to the outside of the lower hanging ball (1). When the external screw (3) is connected to the lower ball (1), the auxiliary rod (7) extends into the receiving hole (8), and a rectangular bolt head (9) is fixedly connected to the end of the auxiliary rod (7) and the external screw (3) away from the lower ball (1).

2. The detachable and reusable wall formwork anti-grout leakage hanging ball fixing device according to claim 1, characterized in that: The lower sphere (1) is hemispherical or frustum-shaped, and the lower sphere (1) is covered with a rubber sleeve (10) that is adapted to it.

3. The detachable and reusable wall formwork anti-leakage ball fixing device according to claim 1, characterized in that: The end of the anchor (2) away from the lower ball (1) is I-shaped, L-shaped, J-shaped, U-shaped or frustum-shaped.

4. The detachable and reusable wall formwork anti-leakage ball fixing device according to claim 1, characterized in that: The receiving hole (8) is an internal threaded hole, and the auxiliary rod (7) is provided with an external thread that is compatible with the receiving hole (8). When the external screw (3) is connected to the lower hanging ball (1), the auxiliary rod (7) is threadedly connected to the receiving hole (8).

5. The detachable and reusable wall formwork anti-leakage ball fixing device according to claim 1, characterized in that: The rectangular bolt head (9) has a rounded transition between adjacent sides.

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