Protective cap for exposed building reinforcement

Abstract

The utility model provides a kind of building reinforcing bar outer leakage protective cap, including sealing cap seat, the sealing cap seat is placed in the bottom of the outer leakage reinforcing bar, and the sealing filling is filled between the two;The protective sealing cap cylinder is connected with sealing cap seat thread by the integrally arranged connecting cap of its below, the inside of the protective sealing cap cylinder is installed and is provided with inner rubber ball head, and its outside is installed and is provided with outer rubber ball head;Steel bar slot is arranged in the middle of the inner rubber ball head;The utility model prevents reinforcing bar root corrosion by sealing cap seat and filling material, cap cylinder and cap seat thread connection reinforcement, silica gel ball head is wrapped end head and is prevented from erosion and collision, adapts to a variety of reinforcing bars, and guarantees construction safety.

Description

Technical Field

[0001] This utility model belongs to the field of exposed steel bar protection technology, and in particular relates to an exposed steel bar protective cap for buildings. Background Technology

[0002] In the field of construction engineering, especially in the construction of reinforced concrete structures, the protection of exposed reinforcing steel bars has always been a crucial and highly concerning issue. In actual construction, to meet architectural design and construction process requirements, such as addressing structural cracking caused by shrinkage deformation during concrete hardening, concrete structures often need to be constructed in sections. After a section of the building structure is completed, it may need to be left idle for a period of time, ranging from 30 to 90 days or even longer, for various reasons; project shutdowns are also quite common. During this period, the exposed reinforcing steel bars in the concrete structure are directly exposed to the air and are extremely prone to rapid rusting.

[0003] Existing protective methods have many drawbacks. For example, applying cement mortar to the surface of the reinforcing bars is prone to weathering and peeling off over time, leading to protective failure. While rust-preventive paint offers some protection, it significantly increases construction costs and is extremely inconvenient to remove later. Furthermore, traditional protective methods are complex to operate and inefficient, failing to meet the demands of modern construction projects for high efficiency and quality. Exposed reinforcing bars also pose safety hazards, as sharp ends can cause cuts, punctures, and other accidental injuries to construction workers.

[0004] Therefore, it is essential to invent a protective cap for exposed steel bars in buildings. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a protective cap for exposed steel bars in construction, including a sealing cap seat, exposed steel bars, sealing filler, connecting cap, protective sealing cap cylinder, inner rubber ball head, outer rubber ball head, and steel bar slot. The sealing cap seat is fitted onto the bottom of the exposed steel bars, and the sealing filler is filled between them. The protective sealing cap cylinder is threadedly connected to the sealing cap seat through a connecting cap integrally set at its lower part. An inner rubber ball head is installed inside the protective sealing cap cylinder, and an outer rubber ball head is installed on its outside. A steel bar slot is opened in the middle of the inner rubber ball head.

[0006] Preferably, the sealing cap includes a base, a connecting cylinder, barbed protrusions, and a through hole. The connecting cylinder, integrally disposed above the base, is threadedly connected to the connecting cap, integrally disposed below the protective sealing cap. Numerous barbed protrusions are evenly distributed on the inner wall of the connecting cylinder. A through hole is provided in the center of the base, and the sealing filler is filled in the connecting cylinder and the through hole.

[0007] Preferably, the outer surface of the connecting cylinder is provided with a thread that fits into the inner wall of the connecting cap, the through hole of the base is on the same vertical line as the center of the connecting cylinder, the diameter of the connecting cylinder is larger than the diameter of the through hole of the base, and the difference in diameter is used to set the barbed protrusions, and the barbed protrusions evenly distributed inside the connecting cylinder are inclined downward.

[0008] Preferably, the through hole in the base is larger than the diameter of the exposed reinforcing bar, and the exposed reinforcing bar can pass through the through hole and the connecting cap, and enter the protective sealing cap cylinder; the sealing filler is concrete filler, and the sealing filler can be evenly distributed in the space formed between the exposed reinforcing bar, the connecting cylinder and the through hole.

[0009] Preferably, an inner rubber ball head and an outer rubber ball head are respectively installed on the inner and outer sides of the upper end of the connecting cap. Both are ball head structures made of silicone material, and the diameter of the connecting cap is larger than the diameter of the exposed reinforcing bar.

[0010] Preferably, a rebar groove is provided in the lower middle of the inner rubber ball head inside the connecting cap to fit the end of the exposed rebar, and the upper end of the exposed rebar is allowed to be protected by the rebar groove provided in the inner rubber ball head.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This utility model features a sealing cap seat placed at the bottom of exposed reinforcing bars, with a sealing filler (such as concrete) between them. This effectively isolates the reinforcing bars from external corrosive media such as air and moisture, preventing corrosion at the root and greatly improving their durability. Simultaneously, the sealing filler (such as concrete) is not exposed, effectively preventing detachment and large-area breakage. The inner rubber ball head inside the protective sealing cap is made of silicone, which is soft and has excellent sealing properties. Through a central reinforcing bar groove, it tightly wraps around the end of the exposed reinforcing bar, further preventing external factors from corroding the reinforcing bar and providing comprehensive protection.

[0012] The connecting cylinder of this utility model's sealing cap seat and the connecting cap cover below the protective sealing cap cylinder are tightly connected by threads, ensuring the overall structure of the protective cap is stable and not easily loosened or detached. The barbed protrusions evenly distributed on the inner wall of the connecting cylinder can fully interlock with the concrete when filling the sealing filler (concrete), enhancing the connection strength between the sealing cap seat and the reinforcing steel and concrete, so that the protective cap can remain stable even in harsh construction environments.

[0013] The through hole of this utility model's sealing cap base is larger than the diameter of the exposed rebar, facilitating rebar passage and adapting to rebars of different diameters, thus possessing wide applicability. The inner and outer rubber ball heads installed on the upper end of the cap are both made of silicone material, which not only protects the rebar ends but also cushions external impacts to a certain extent, preventing damage from collisions. Simultaneously, the silicone material has good flexibility and weather resistance, maintaining stable performance in long-term outdoor environments and continuously providing protection.

[0014] This utility model of protective cap can effectively cover the sharp ends of exposed steel bars, preventing construction workers from being accidentally scratched or punctured by steel bars on the construction site, significantly reducing safety risks during construction, protecting the personal safety of construction workers, and creating a safer working environment for the construction site. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a half-sectional structural diagram of the present invention.

[0017] Figure 3 This is a half-sectional structural diagram of the sealing cap seat of this utility model.

[0018] Figure 4 This is a utility model Figure 2 A magnified schematic diagram of the structure at point A.

[0019] In the picture: 1. Sealing cap, 11. Base, 12. Connecting cylinder, 13. Barbed protrusion, 14. Through hole, 2. Exposed reinforcing bar, 3. Sealing filler, 4. Connecting cap, 5. Protective sealing cap, 6. Inner rubber ball head, 7. Outer rubber ball head, 8. Reinforcing bar groove. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0022] As attached Figure 1 To be continued Figure 4 As shown: This utility model provides a protective cap for exposed steel bars in construction, comprising a sealing cap seat 1, exposed steel bars 2, sealing filler 3, connecting cap 4, protective sealing cap cylinder 5, inner rubber ball head 6, outer rubber ball head 7, and steel bar groove 8. The sealing cap seat 1 is fitted onto the bottom of the exposed steel bars 2, with the sealing filler 3 filling the space between them. The protective sealing cap cylinder 5 is threadedly connected to the sealing cap seat 1 via the connecting cap 4 integrally provided below it. The inner rubber ball head 6 is installed inside the protective sealing cap cylinder 5, and the outer rubber ball head 7 is installed on its outside. The steel bar groove 8 is formed in the middle of the inner rubber ball head 6.

[0023] Furthermore, the sealing cap 1 is made of high-strength engineering plastic (such as ABS resin) and is integrally injection molded, comprising a base 11, a connecting cylinder 12, barbed protrusions 13, and a through hole 14. The base 11 is a circular flat plate structure, with the connecting cylinder 12 integrally formed vertically on top. The outer surface of the connecting cylinder 12 is machined with standard external threads, allowing for a tight threaded connection with the connecting cap 4 (with matching internal threads machined on its inner wall), which is integrally set below the protective sealing cap 5. After tightening, the clearance is ≤0.2mm. The inner wall of the connecting cylinder 12 has three rings of barbed protrusions 13 evenly distributed along the circumference, made of a rigid plastic material integrally formed with the connecting cylinder 12, possessing a certain degree of elasticity. A through hole 14 is opened through the center of the base 11. The through hole 14 coincides with the central axis of the connecting cylinder 12, forming a channel that runs through the top and bottom. The sealing filler 3 (such as fine stone concrete or other sealing colloid) can be filled into the interior of the connecting cylinder 12 and the gap between the through hole 14 and the exposed reinforcing bar 2 through this channel. The barbed protrusion 13 can form a mechanical engagement with the hardened concrete to prevent the sealing cap 1 from detaching from the concrete.

[0024] Furthermore, the external thread on the outer surface of the connecting cylinder 12 is M50×2, which perfectly matches the M50×2 internal thread on the inner wall of the connecting cap 4, ensuring the stability and sealing of the threaded connection. The coaxiality error between the through hole 14 of the base 11 and the central axis of the connecting cylinder 12 is ≤0.5mm, ensuring that the exposed reinforcing bar 2 can be inserted vertically. The inner diameter of the connecting cylinder 12 is 45mm, and the diameter of the through hole 14 of the base 11 is 30mm. The annular area with a 15mm diameter difference between the two is used to arrange the barbed protrusions 13. The barbed protrusions 13 are inclined downward at 30° along the inner wall of the connecting cylinder 12, and the inclination direction is opposite to the insertion direction of the exposed reinforcing bar 2. When the sealing filler 3 (concrete) is filled and hardened, the barbed protrusions 13 will be embedded in the concrete, forming a "one-way locking" structure, effectively preventing the sealing cap 1 from loosening upward due to external force, and enhancing the overall fixing strength.

[0025] Furthermore, the diameter of the through hole 14 of the base 11 (30mm) is 10mm larger than the conventional diameter of the exposed reinforcing bar 2 (e.g., 20mm). This facilitates the smooth insertion of the exposed reinforcing bar 2 (insertion path: from the bottom of the through hole 14, through the interior of the connecting cylinder 12, the center hole of the connecting cap 4, and finally into the protective sealing cap 5), while also leaving sufficient gap for filling the sealing filler 3. The sealing filler 3 is made of C30 fine stone concrete (maximum aggregate particle size 5mm), which has good fluidity and can fill the annular space (gap width 5-7mm) between the exposed reinforcing bar 2, the inner wall of the connecting cylinder 12, and the wall of the through hole 14 under the action of gravity. After hardening, it forms a dense sealing layer, which not only fixes the relative position of the sealing cap 1 and the exposed reinforcing bar 2, but also isolates external moisture and dust from entering the root of the reinforcing bar, preventing corrosion.

[0026] Furthermore, the connecting cap 4 is integrally molded from the same engineering plastic as the sealing cap 1, and is cylindrical in shape. Its inner wall is machined with internal threads that match the external threads of the connecting cylinder 12, and the bottom edge has anti-slip textures (for easy hand tightening). Circular grooves are respectively formed on the inner and outer sides of the upper end of the connecting cap 4. The inner rubber ball head 6 and the outer rubber ball head 7 are embedded in the grooves through an interference fit. Both are made of food-grade silicone, possessing excellent elasticity and weather resistance (stable performance from -30℃ to 80℃). The spherical surfaces of the inner rubber ball head 6 and the outer rubber ball head 7 are smooth and burr-free, fitting tightly with the grooves of the connecting cap 4 (fitting gap ≤ 0.1mm). The inner diameter of the connecting cap 4 (52mm) is larger than the maximum diameter of the exposed reinforcing bar 2 (25mm), providing sufficient space for the insertion of the reinforcing bar and the deformation of the inner rubber ball head 6.

[0027] Furthermore, a steel bar groove 8 is integrally formed at the center of the bottom surface of the inner rubber ball head 6 on the upper part of the connecting cap 4. This groove is a cylindrical groove (the diameter is the same as the diameter of the exposed steel bar 2 end, such as 20mm; depth 15mm), and the groove wall is provided with 3 rings of annular anti-slip ridges (0.5mm high). When the exposed steel bar 2 end is inserted into the groove 8, the elasticity of the silicone allows the groove 8 to tightly wrap the steel bar end (radial clamping force ≥5N), which not only avoids direct contact between the steel bar end and the outside world (dustproof and moistureproof), but also absorbs external impact forces (such as collisions with construction tools) through the buffering effect of the silicone, preventing deformation of the steel bar end.

[0028] The working principle is as follows: First, the sealing cap 1 is placed on the bottom (root) of the exposed reinforcing bar 2, so that the exposed reinforcing bar 2 passes through the through hole 14 in the center of the base 11. At this time, an annular gap is formed between the sealing cap 1 and the exposed reinforcing bar 2. The sealing filler 3 is filled into this gap and the inside of the connecting cylinder 12 (avoiding it from adhering to the external threads on the outer surface of the connecting cylinder 12 during the filling process). After the sealing filler 3 hardens, it will form a mechanical engagement with the barbed protrusions 13 on the inner wall of the connecting cylinder 12, firmly fixing the sealing cap 1 to the bottom of the exposed reinforcing bar 2, while isolating external moisture and dust from entering the root of the reinforcing bar to prevent corrosion.

[0029] Secondly, the protective sealing cap 5 is threadedly connected to the connecting cylinder 12 of the sealing cap seat 1 via the connecting cap 4 below. After tightening, the two are tightly joined to form an outer protective structure for the exposed part of the steel bar, preventing the steel bar from being directly exposed to the external environment.

[0030] Then, after the protective sealing cap 5 is installed in place, the end of the exposed rebar 2 will pass into the interior of the protective sealing cap 5 and fit into the rebar groove 8 in the middle of the inner rubber ball head 6. Since the inner rubber ball head 6 is made of silicone and has elasticity, the rebar groove 8 will tightly wrap around the end of the rebar. On the one hand, it can prevent the end from contacting the outside world, playing a role in dust prevention and moisture prevention; on the other hand, when there is an impact from the outside, the elasticity of the silicone can buffer the impact force and prevent damage to the end of the rebar.

[0031] Finally, the outer rubber ball head 7 of the protective sealing cap 5 is also made of silicone, which can further protect the outer structure, reduce the impact of external collisions on the protective sealing cap 5 and the internal structure, and enhance the overall stability and durability of the protection.

[0032] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A protective cap for exposed steel reinforcement in construction, characterized in that, The device includes a sealing cap seat (1), an exposed reinforcing bar (2), a sealing filler (3), a connecting cap (4), a protective sealing cap cylinder (5), an inner rubber ball head (6), an outer rubber ball head (7), and a reinforcing bar groove (8). The sealing cap seat (1) is fitted onto the bottom of the exposed reinforcing bar (2), and the sealing filler (3) fills the space between them. The protective sealing cap cylinder (5) is threadedly connected to the sealing cap seat (1) through the connecting cap (4) integrally set below it. An inner rubber ball head (6) is installed inside the protective sealing cap cylinder (5), and an outer rubber ball head (7) is installed on its outside. A reinforcing bar groove (8) is opened in the middle of the inner rubber ball head (6).

2. The protective cap for exposed steel reinforcement in construction as described in claim 1, characterized in that: The sealing cap seat (1) includes a base (11), a connecting cylinder (12), barbed protrusions (13) and a through hole (14). The connecting cylinder (12) integrally provided above the base (11) is threadedly connected to the connecting cap (4) integrally provided below the protective sealing cap cylinder (5). Numerous barbed protrusions (13) are evenly distributed on the inner wall of the connecting cylinder (12). The through hole (14) is provided in the center of the base (11), and the sealing filler (3) is filled in the connecting cylinder (12) and the through hole (14).

3. A protective cap for exposed steel reinforcement bars in construction as described in claim 2, characterized in that: The outer surface of the connecting cylinder (12) is provided with a thread that fits the inner wall of the connecting cap (4). The through hole (14) provided by the base (11) is on the same vertical line as the center of the connecting cylinder (12). The diameter of the connecting cylinder (12) is larger than the diameter of the through hole (14) provided by the base (11). The difference in diameter is used to set the barb protrusions (13). The barb protrusions (13) evenly distributed inside the connecting cylinder (12) are inclined downward.

4. A protective cap for exposed steel reinforcement in construction as described in claim 3, characterized in that: The through hole (14) provided in the base (11) is larger than the diameter of the exposed steel bar (2). The exposed steel bar (2) can pass through the through hole (14) and the connecting cap (4) and enter the protective sealing cap (5). The sealing filler (3) is concrete filler. The sealing filler (3) can be evenly distributed in the space formed between the exposed steel bar (2), the connecting cylinder (12), and the through hole (14).

5. A protective cap for exposed steel reinforcement in construction as described in claim 4, characterized in that: The upper end of the connecting cap (4) is respectively equipped with an inner rubber ball head (6) and an outer rubber ball head (7), both of which are ball head structures made of silicone material. The diameter of the connecting cap (4) is larger than the diameter of the exposed steel bar (2).

6. A protective cap for exposed steel reinforcement in construction as described in claim 5, characterized in that: The inner rubber ball head (6) inside the connecting cap (4) has a steel bar groove (8) that fits with the end of the exposed steel bar (2) in the middle and lower part. The upper end of the exposed steel bar (2) is allowed to be protected by the steel bar groove (8) set in the inner rubber ball head (6).

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