Reinforcing bar connecting device with multi-stage locking structure

Abstract

The utility model relates to a reinforcing steel bar connecting device with multistage locking structure, including reinforcing steel bar connecting sleeve, the top and bottom of reinforcing steel bar connecting sleeve all are provided with multistage locking connection mechanism, the top of connection main part is provided with the first insertion slot of two numbers, the inside of each first insertion slot all has and inserts the insertion piece, the left and right sides of connection main part all rotationally connected with the limiting screw rod corresponding with first insertion slot, the top of each insertion piece all fixedly installed with aluminium alloy clamping piece. The reinforcing steel bar connecting device with multistage locking structure, through the insertion piece of multistage locking connection mechanism and the first insertion slot of connection main part, the second insertion slot of connecting insertion piece mutually inserts, can realize the extension connection between multiple multistage locking connection mechanisms, thereby the contact area of reinforcing steel bar body butt joint place is increased, the bearing capacity under complex load is promoted, and the loose slip at the joint is reduced.

Description

Technical Field

[0001] This utility model relates to the field of rebar connection sleeve technology, specifically a rebar connection device with a multi-level locking structure. Background Technology

[0002] In the field of modern building construction, reinforced concrete structures have become the core construction method for various large-scale buildings and bridge projects due to their excellent mechanical properties and durability. As a key component for mechanical connection between steel bars, the performance of steel bar connecting sleeves directly affects the reliability of steel bar connection and the load-bearing capacity of the overall structure, playing a decisive role in project quality and safety.

[0003] A search revealed a utility model patent with patent number CN222295469U, which discloses a rebar connection device. The device includes a connecting sleeve with ribbed grooves, an upper thread at the upper end, and a lower thread at the lower end, with the upper and lower threads having opposite directions. A positioning component is connected to the upper end of the connecting sleeve. This positioning component includes a first sleeve connected to the upper end of the connecting sleeve, within which a limiting support is movably installed. The limiting support has locking grooves at both its upper and lower ends. A second positioning component is located at the lower end of the connecting sleeve. In use, the connecting sleeve is fitted onto the connecting end of the rebar. After the connecting sleeve is fitted, the first and second sleeves can be tightened, thereby securing the connecting sleeve between the rebars. This allows for quick connection of the rebars, shortening the construction cycle and reducing construction costs.

[0004] Existing rebar connecting sleeves, as shown in the aforementioned utility model patent, exhibit significant drawbacks in practical applications due to their limited size. The small sleeve size results in insufficient effective contact area at the rebar joint, making it difficult to meet the load-bearing requirements under complex load conditions. This can easily lead to problems such as loosening and slippage at the connection, thereby affecting the overall structural stability. Furthermore, a single locking method cannot provide a durable and reliable fastening effect when facing dynamic loads or uneven stress, resulting in a weak structure at the rebar joint and affecting the quality and safety of the construction project. Therefore, a rebar connecting device with a multi-level locking structure is proposed to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a rebar connection device with a multi-level locking structure. It offers advantages such as effectively increasing the load-bearing area and providing multi-level locking functionality. This solves the problem that the rebar connection sleeve, limited by its own size specifications, exhibits significant defects in practical applications. The small sleeve size results in insufficient effective contact area at the rebar joint, making it difficult to meet the load-bearing requirements under complex load conditions. This easily leads to problems such as loosening and slippage at the connection, thus affecting the overall structural stability. Furthermore, a single locking method cannot provide a durable and reliable fastening effect under dynamic loads or uneven stress, resulting in a weak rebar joint structure and impacting the quality and safety of the building project.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a rebar connection device with a multi-level locking structure, comprising a rebar connection sleeve, wherein a rebar body is movably installed at the top and bottom of the rebar connection sleeve, and a multi-level locking connection mechanism is provided at the top and bottom of the rebar connection sleeve.

[0009] The rebar connecting sleeve includes a connecting body, internal threads and external threads. The inner wall of the connecting body has two internal threads with opposite directions. The outer surfaces of the two rebar bodies at opposite ends have external threads with opposite directions.

[0010] The multi-stage locking connection mechanism includes a first insertion slot, an insertion piece, a limiting screw, an aluminum alloy clamping piece, a rubber ring, a connecting insert, a fixing strip, a threaded hole, a fixing screw, and a second insertion slot. The top of the connecting body has two first insertion slots, each containing an insertion piece. Limiting screws corresponding to the first insertion slots are rotatably connected to the left and right sides of the connecting body. An aluminum alloy clamping piece is fixedly installed on the top of each insertion piece, and a rubber ring is fixedly installed on the inner wall of each aluminum alloy clamping piece. A connecting insert is fixedly installed on the top of each aluminum alloy clamping piece. A fixing strip is fixedly installed on both the front and back of each connecting insert. Two threaded holes are opened inside each fixing strip, and a fixing screw is movably installed between every two laterally adjacent fixing strips. A second insertion slot is opened on the top of each connecting insert.

[0011] Furthermore, the connecting body is threadedly connected to the external thread on the outer surface of the reinforcing bar body through the internal thread on the inner wall.

[0012] Furthermore, the limiting screw penetrates the outer surface of the connecting body and extends into the interior of the first insertion slot, where it is threadedly connected to the insertion piece.

[0013] Furthermore, the inner wall of the rubber ring is in contact with the outer surface of the steel bar body, and a number of anti-slip particles are fixedly installed on the inner wall of the rubber ring.

[0014] Furthermore, the fixing screw passes through a threaded hole inside one of the fixing bars and is threadedly connected to a threaded hole inside the other fixing bar.

[0015] Furthermore, the connector is adapted to the first connector slot and the second connector slot.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. The rebar connection device with a multi-level locking structure can realize the expansion connection between multiple multi-level locking connection mechanisms by interlocking the plug-in piece of the multi-level locking connection mechanism with the first plug-in groove of the connection body and the second plug-in groove of the connecting plug piece. This effectively increases the contact area at the joint of the rebar body, improves the bearing capacity under complex loads, and reduces loosening and slippage at the connection.

[0019] 2. This rebar connection device with a multi-stage locking structure has an internal thread on the inner wall of the rebar connection sleeve that is threaded to the external thread of the rebar body. In conjunction with the aluminum alloy clamping plate in the multi-stage locking connection mechanism, the rebar body is clamped by a rubber ring. The anti-slip particles on the inner wall of the rubber ring increase friction. At the same time, the limiting screw and the fixing screw lock the plug-in plate and the fixing strip respectively, forming a multi-stage locking structure that can cope with dynamic loads and uneven stress, providing a durable fastening effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the planar structure of this utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of the connecting sleeve of this utility model;

[0022] Figure 3 This is a schematic diagram of the multi-stage locking connection mechanism of this utility model;

[0023] Figure 4 A three-dimensional schematic diagram of the multi-stage locking connection mechanism of this utility model is provided;

[0024] Figure 5 This utility model Figure 1 Enlarged diagram of point A in the diagram.

[0025] In the diagram: 1. Connecting sleeve; 101. Connecting body; 102. Internal thread; 103. External thread; 2. Rebar body; 3. Multi-stage locking connection mechanism; 301. First insertion slot; 302. Insertion piece; 303. Limiting screw; 304. Aluminum alloy clamping piece; 305. Rubber ring; 306. Connecting insert; 307. Fixing strip; 308. Threaded hole; 309. Fixing screw; 310. Second insertion slot. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 In this embodiment, a rebar connection device with a multi-level locking structure includes a rebar connection sleeve 1, a rebar body 2 is movably installed on the top and bottom of the rebar connection sleeve 1, and a multi-level locking connection mechanism 3 is provided on the top and bottom of the rebar connection sleeve 1.

[0028] The rebar connecting sleeve 1 includes a connecting body 101, an internal thread 102 and an external thread 103. The inner wall of the connecting body 101 is provided with two internal threads 102 with opposite thread directions. The outer surfaces of the two rebar bodies 2 at opposite ends are provided with external threads 103 with opposite thread directions.

[0029] The multi-stage locking connection mechanism 3 includes a first insertion slot 301, an insertion piece 302, a limiting screw 303, an aluminum alloy clamping piece 304, a rubber ring 305, a connecting insert 306, a fixing strip 307, a threaded hole 308, a fixing screw 309, and a second insertion slot 310. The top of the connecting body 101 has two first insertion slots 301, and each first insertion slot 301 has an insertion piece 302 inserted inside. Limiting screws 303 corresponding to the first insertion slots 301 are rotatably connected to the left and right sides of the connecting body 101. Each insertion piece... Each of the 302 is fixedly mounted with an aluminum alloy clamping plate 304 on its top. Each aluminum alloy clamping plate 304 is fixedly mounted with a rubber ring 305 on its inner wall. Each aluminum alloy clamping plate 304 is fixedly mounted with a connecting insert 306 on its top. Each connecting insert 306 is fixedly mounted with a fixing strip 307 on its front and back sides. Each fixing strip 307 has two threaded holes 308 inside. A fixing screw 309 is movably installed between every two horizontally adjacent fixing strips 307. Each connecting insert 306 has a second insertion groove 310 on its top.

[0030] Specifically, during actual installation and use, first align the opposite ends of the two steel bar bodies 2 with the top and bottom of the steel bar connecting sleeve 1, respectively. Since the inner wall of the connecting body 101 has two internal threads 102 with opposite thread directions, and the external threads 103 on the outer surfaces of the opposite ends of the two steel bar bodies 2 also have opposite thread directions, screw the external threads 103 of the steel bar bodies 2 into the internal threads 102 of the connecting sleeve 1. By rotating the steel bar bodies 2 clockwise or counterclockwise, the two are initially fixed by threaded connection, ensuring that the steel bar bodies 2 are aligned with the axis of the connecting body 101 and avoiding eccentric installation.

[0031] Specifically, after the threaded connection is completed, the multi-stage locking connection mechanism 3 is installed. Taking the top of the connecting sleeve 1 as an example, the two first insertion slots 301 opened on the top of the connecting body 101 are used to insert the insertion pieces 302 into the corresponding first insertion slots 301 respectively, ensuring that the insertion pieces 302 are completely embedded in the slots. Then, the limiting screws 303 are rotated from the left and right sides of the connecting body 101 so that the limiting screws 303 penetrate through the outer surface of the connecting body 101 and extend into the inside of the first insertion slots 301, and are threadedly connected to the insertion pieces 302. By tightening the limiting screws 303, the insertion pieces 302 are fixed in the first insertion slots 301 to prevent the insertion pieces 302 from moving laterally.

[0032] The aluminum alloy clamping plate 304, which is fixedly installed on the top of the plug-in plate 302, is located on the outside of the rebar body 2. The two horizontally opposite aluminum alloy clamping plates 304 are connected and fixed by a fixing screw 309 passing through the threaded hole 308 inside one fixing strip 307 and threadedly connecting to the threaded hole 308 inside the other fixing strip 307. As the fixing screw 309 is tightened, the rubber ring 305 on the inner wall of the aluminum alloy clamping plate 304 gradually comes into close contact with the outer surface of the rebar body 2. Since the inner wall of the rubber ring 305 is provided with several anti-slip particles, when the aluminum alloy clamping plate 304 clamps the rebar body 2, the anti-slip particles increase the friction with the surface of the rebar, improving the clamping stability. During installation, it is necessary to ensure that the rubber ring 305 completely covers the rebar body 2 to avoid gaps.

[0033] Specifically, when the overall structure is under load, the threaded connection between the steel bar body 2 and the steel bar connecting sleeve 1 provides the initial locking force, and the clamping force of the aluminum alloy clamping plate 304 and the rubber ring 305 forms a secondary locking. The multi-level locking structure works together to effectively cope with dynamic loads or uneven stress, and prevent the steel bar body 2 from loosening or slipping in the connecting sleeve 1, so as to ensure the reliability of the steel bar connection and the overall stability of the structure.

[0034] In summary, this rebar connection device with a multi-level locking structure can achieve extended connection between multiple multi-level locking connection mechanisms 3 by interlocking the plug-in piece 302 of the multi-level locking connection mechanism 3 with the first plug-in groove 301 of the connection body 101 and the second plug-in groove 310 of the connection piece 306. This effectively increases the contact area at the joint of the rebar body 2, improves the bearing capacity under complex loads, and reduces loosening and slippage at the connection.

[0035] Furthermore, this rebar connection device with a multi-stage locking structure features an internal thread 102 on the inner wall of the rebar connection sleeve 1 that is threaded to the external thread 103 of the rebar body 2. This, combined with the aluminum alloy clamping plate 304 in the multi-stage locking connection mechanism 3, clamps the rebar body 2 via a rubber ring 305. The anti-slip particles on the inner wall of the rubber ring 305 increase friction. Simultaneously, the limiting screw 303 and the fixing screw 309 lock the insertion piece 302 and the fixing strip 307 respectively, forming a multi-stage locking structure. This structure can handle dynamic loads and uneven stress, providing a durable and secure fastening effect. It solves the problem that the rebar connection sleeve, limited by its own size specifications, exhibits significant defects in practical applications. The smaller sleeve size results in insufficient effective contact area at the rebar joint, making it difficult to meet the load-bearing requirements under complex load conditions. This easily leads to loosening and slippage at the connection, thus affecting the overall structural stability. At the same time, a single locking method cannot provide a durable and reliable fastening effect under dynamic loads or uneven stress, resulting in a weak rebar joint structure that affects the quality and safety of the building project.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rebar connection device with a multi-stage locking structure, comprising a rebar connection sleeve (1), characterized in that: The top and bottom of the steel bar connecting sleeve (1) are movably installed with steel bar bodies (2), and the top and bottom of the steel bar connecting sleeve (1) are provided with multi-level locking connection mechanisms (3); The steel bar connecting sleeve (1) includes a connecting body (101), an internal thread (102) and an external thread (103). The inner wall of the connecting body (101) is provided with two internal threads (102) with opposite thread directions. The outer surfaces of the two steel bar bodies (2) at opposite ends are provided with external threads (103) with opposite thread directions. The multi-stage locking connection mechanism (3) includes a first insertion slot (301), an insertion piece (302), a limiting screw (303), an aluminum alloy clamping piece (304), a rubber ring (305), a connecting insert (306), a fixing strip (307), a threaded hole (308), a fixing screw (309), and a second insertion slot (310). The top of the connecting body (101) has two first insertion slots (301), each containing an insertion piece (302). The left and right sides of the connecting body (101) are rotatably connected to limiting screws (303) corresponding to the first insertion slots (301). An aluminum alloy clamping plate (304) is fixedly installed on the top of each plug-in piece (302). A rubber ring (305) is fixedly installed on the inner wall of each aluminum alloy clamping plate (304). A connecting plug (306) is fixedly installed on the top of each aluminum alloy clamping plate (304). A fixing strip (307) is fixedly installed on the front and back of each connecting plug (306). Two threaded holes (308) are opened inside each fixing strip (307). A fixing screw (309) is movably installed between every two horizontally adjacent fixing strips (307). A second plug-in groove (310) is opened on the top of each connecting plug (306).

2. The rebar connection device with a multi-level locking structure according to claim 1, characterized in that: The connecting body (101) is threadedly connected to the outer thread (103) on the outer surface of the steel bar body (2) through the inner thread (102) on the inner wall.

3. A rebar connection device with a multi-level locking structure according to claim 1, characterized in that: The limiting screw (303) penetrates the outer surface of the connecting body (101) and extends into the interior of the first insertion slot (301) and is threadedly connected to the insertion piece (302).

4. A rebar connection device with a multi-level locking structure according to claim 1, characterized in that: The inner wall of the rubber ring (305) is in contact with the outer surface of the steel bar body (2), and a number of anti-slip particles are fixedly installed on the inner wall of the rubber ring (305).

5. A rebar connection device with a multi-level locking structure according to claim 1, characterized in that: The fixing screw (309) passes through the threaded hole (308) inside one of the fixing bars (307) and is threadedly connected to the threaded hole (308) inside the other fixing bar (307).

6. A rebar connection device with a multi-level locking structure according to claim 1, characterized in that: The plug-in piece (302) is adapted to the first plug-in slot (301) and the second plug-in slot (310).

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